FN Thomson Reuters Web of Science™
VR 1.0
PT J
AU Acatrinei, AI
Hartl, MA
Eckert, J
Falcao, EHL
Chertkov, G
Daemen, LL
AF Acatrinei, A. I.
Hartl, M. A.
Eckert, Juergen
Falcao, Eduardo H. L.
Chertkov, G.
Daemen, L. L.
TI Hydrogen Adsorption in the Ti-Doped Mesoporous Silicate SBA-15
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID METAL-ORGANIC FRAMEWORKS; X-RAY-ABSORPTION; CATALYTIC-ACTIVITY; CARBON
MATERIALS; TITANIUM; STORAGE; CLUSTERS; TEMPERATURE; VIBRATIONS;
SCATTERING
AB While metal-doped mesoporous silicate SBA-15 has been studied extensively for its catalytic properties, the adsorption of molecular hydrogen in this system has not been considered. We report herein that the titanium-doped material (10% Ti) adsorbs nearly twice the amount of hydrogen at 77 K and a pressure of 25 bar than pure SBA-15, Hydrogen adsorption isotherms also show that binding energies in the Ti-doped material are more than 50% greater than in SBA-15. Neutron vibrational spectroscopy shows clear evidence for interaction of hydrogen with Ti, which is responsible for part of the increase in hydrogen sorption in the material.
C1 [Acatrinei, A. I.; Hartl, M. A.; Eckert, Juergen; Chertkov, G.; Daemen, L. L.] Los Alamos Natl Lab, Manuel Lujan Jr Neutron Scattering Ctr, Los Alamos, NM 87545 USA.
[Eckert, Juergen; Falcao, Eduardo H. L.] Univ Calif Santa Barbara, Mat Res Lab, Santa Barbara, CA 93106 USA.
[Chertkov, G.] Univ Calif Santa Barbara, Dept Chem & Biochem, Santa Barbara, CA 93106 USA.
RP Daemen, LL (reprint author), Los Alamos Natl Lab, Manuel Lujan Jr Neutron Scattering Ctr, Los Alamos, NM 87545 USA.
EM lld@lanl.gov
RI Lujan Center, LANL/G-4896-2012; Hartl, Monika/F-3094-2014; Falcao,
Eduardo/J-4358-2014; Hartl, Monika/N-4586-2016
OI Hartl, Monika/0000-0002-6601-7273; Falcao, Eduardo/0000-0002-7408-6287;
Hartl, Monika/0000-0002-6601-7273
FU U.S. Department of Energy [DE-AC52-06NA25396]
FX This work has benefited from the use of the Manuel Lujan, Jr. Neutron
Scattering Center at Los Alamos National Laboratory and funding from the
U.S. Department of Energy's Office of Basic Energy Sciences. Los Alamos
National Laboratory is operated by Los Alamos National Security LLC
tinder DOE Contract No. DE-AC52-06NA25396. Work at UCSB was supported by
the Office of Energy Efficiency and Renewable Energy, U.S. Department of
Energy.
NR 33
TC 15
Z9 16
U1 0
U2 13
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD SEP 3
PY 2009
VL 113
IS 35
BP 15634
EP 15638
DI 10.1021/jp8110875
PG 5
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 487EC
UT WOS:000269252500024
ER
PT J
AU Yi, CW
Szanyi, J
AF Yi, Cheol-Woo
Szanyi, Janos
TI Interaction of D2O with a Thick BaO Film: Formation of and Phase
Transitions in Barium Hydroxides
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID NOX STORAGE MATERIALS; INDUCED MORPHOLOGY CHANGES; BA(NO3)(2) FORMATION;
INFRARED-SPECTRA; AL2O3 FILM; NIAL(110); DIFFRACTION; ADSORPTION;
OXIDATION; CATALYSTS
AB The interaction of D2O with a thick BaO film (>= 20 monolayer equivalent (MLE)) on ultrathin Al2O3/NiAl(110) was investigated with temperature programmed desorption (TPD) and infrared reflection absorption spectroscopy (IRAS). Upon D2O exposure of a thick BaO film, amorphous barium hydroxide formed at room temperature that readily converted to crystalline Ba(OD)(2) phases during annealing in ultrahigh vacuum (UHV). The formation of crystalline hydroxide phases depends on the initial D2O exposure at 300 K. Following low D2O exposure at room temperature that results in the formation of amorphous barium hydroxide with no hydrating water, only the alpha-Ba(OD)(2) phase was observed after 400 K annealing. The sample that was exposed to D,0 extensively (i.e., hydrated amorphous barium hydroxide formed) showed a series of phase transformations as the sample was annealed to increasingly higher temperatures: amorphous-Ba(OD)(2)center dot xD(2)O (x > 1) -> beta-Ba(OD)(2)center dot D2O -> beta-Ba(OD)(2) -> alpha-Ba(OD)(2). The results of TPD experiments completely agreed with this phase transformation scheme: hydrating water molecules desorbed first at 425 K, allowing the formation of the beta-Ba(OD)(2)center dot D2O phase. Desorption of water from beta-Ba(OD)(2)center dot D2O at around 475 K leads to the formation of beta-Ba(OD)(2) and its subsequent conversion to alpha-Ba(OD)(2). All of the barium hydroxides thermally decomposed at T < 550 K. When the BaO film was exposed to D2O at 425 K, crystalline beta-Ba(OD)(2) formed initially, which led to the formation of a small amount of alpha-Ba(OD)(2) as well at low D,O exposures. At high D2O exposures, the dominant phase was beta-Ba(OD)(2)center dot xD(2)O, and no alpha-phase was seen.
C1 [Yi, Cheol-Woo; Szanyi, Janos] Pacific NW Natl Lab, Inst Interfacial Catalysis, Richland, WA 99352 USA.
RP Szanyi, J (reprint author), Pacific NW Natl Lab, Inst Interfacial Catalysis, POB 999,MSIN K8-87, Richland, WA 99352 USA.
EM janos.szanyi@pnl.gov
RI Yi, Cheol-Woo/B-3082-2010
OI Yi, Cheol-Woo/0000-0003-4549-5433
FU US Department of Energy (DOE); Office of Basic Energy Sciences; Division
of Chemical Sciences; Environmental Molecular Sciences Laboratory
(EMSL); US DOE by Battelle Memorial Institute [DE-AC05-76RL01830];
Sungshin Women's University Research Grant of 2009
FX We gratefully acknowledge the US Department of Energy (DOE). Office of
Basic Energy Sciences, and Division of Chemical Sciences for the support
of this work. The research described in this article was performed at
the Environmental Molecular Sciences Laboratory (EMSL), a national
scientific user facility sponsored by the DOE Office of Biological and
Environmental Research and located at Pacific Northwest National
Laboratory (PNNL). PNNL is operated for the US DOE by Battelle Memorial
Institute under contract number DE-AC05-76RL01830. This work was also
supported by the Sungshin Women's University Research Grant of 2009.
NR 27
TC 6
Z9 6
U1 3
U2 8
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD SEP 3
PY 2009
VL 113
IS 35
BP 15692
EP 15697
DI 10.1021/jp903798z
PG 6
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 487EC
UT WOS:000269252500032
ER
PT J
AU Lee, YJ
Lloyd, MT
Olson, DC
Grubbs, RK
Lu, P
Davis, RJ
Voigt, JA
Hsu, JWP
AF Lee, Yun-Ju
Lloyd, Matthew T.
Olson, Dana C.
Grubbs, Robert K.
Lu, Ping
Davis, Robert J.
Voigt, James A.
Hsu, Julia W. P.
TI Optimization of ZnO Nanorod Array Morphology for Hybrid Photovoltaic
Devices
SO JOURNAL OF PHYSICAL CHEMISTRY C
LA English
DT Article
ID SENSITIZED SOLAR-CELLS; NANOWIRE ARRAYS; POLYMER; DEPOSITION; FILMS;
LAYER
AB Hybrid inorganic oxide/conjugated polymer photovoltaic devices using ZnO nanorod arrays (NRAs) instead of planar films as the electron-transport layer exhibit significant improvements in performance that have been attributed to increased heterojunction surface area, although the relationship has not been quantitatively established. Here, we independently measure the surface area of ZnO NRAs and quantify its effect on the performance of ZnO NRA/poly(3-hexylthiophene) (P3HT) photovoltaic devices. We find that a device utilizing a vertically aligned 180 nm ZnO NRA exhibits an similar to 2.7x enhancement in the short-circuit current compared with that of a bilayer device, in excellent agreement with the increase in surface area. In addition, we show that a subtle difference in the NRA morphology can impact P3HT crystallinity in the photoactive region. Improved P3HT crystallinity leads to an similar to 25% enhancement in the short-circuit current for devices with the same surface area. On the basis of these findings, we modify the NRA growth to introduce more spacing between nanorods and create a ZnO NRA/P3HT device with a high short-circuit current density of 2.91 mA/cm(2). These results indicate that, although increased surface area is the most important factor to improving photocurrent and efficiency, other factors, such as ZnO NRA morphology and P3HT crystallinity, also impact the performance of ZnO/P3HT photovoltaic devices.
C1 [Lee, Yun-Ju; Hsu, Julia W. P.] Sandia Natl Labs, Ctr Integrated Nanotechnol, Albuquerque, NM 87185 USA.
RP Lee, YJ (reprint author), Sandia Natl Labs, Ctr Integrated Nanotechnol, POB 5800, Albuquerque, NM 87185 USA.
EM ylee@sandia.gov
FU U.S. Department of Energy [DE-AC04-94AL85000]
FX The authors acknowledge B. McKenzie and R. Grant for SEM imaging, P.
Provencio for the TEM imaging in Figure 1, and M. Rye for TEM sample
preparation by FIB. This work was financially supported by the Sandia
Laboratory Directed Research and Development Program and was performed.
in part, at the Center for Integrated Nanotechnologies, a U.S.
Department of Energy, Office of Basic Energy Sciences user facility.
Sandia is a multiprogram laboratory operated by Sandia Corporation, a
Lockheed Martin Company, for the U.S. Department of Energy under
Contract No. DE-AC04-94AL85000.
NR 26
TC 46
Z9 50
U1 0
U2 17
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1932-7447
J9 J PHYS CHEM C
JI J. Phys. Chem. C
PD SEP 3
PY 2009
VL 113
IS 35
BP 15778
EP 15782
DI 10.1021/jp904387z
PG 5
WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science,
Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 487EC
UT WOS:000269252500044
ER
PT J
AU Gnedin, NY
AF Gnedin, Nickolay Y.
TI ASTROPHYSICS Hidden chaos in cosmic order
SO NATURE
LA English
DT Editorial Material
C1 Fermilab Natl Accelerator Lab, Theoret Astrophys Grp, Batavia, IL 60510 USA.
RP Gnedin, NY (reprint author), Fermilab Natl Accelerator Lab, Theoret Astrophys Grp, Batavia, IL 60510 USA.
EM gnedin@fnal.gov
NR 3
TC 2
Z9 2
U1 0
U2 2
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 0028-0836
J9 NATURE
JI Nature
PD SEP 3
PY 2009
VL 461
IS 7260
BP 43
EP 44
DI 10.1038/461043a
PG 2
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 490DT
UT WOS:000269478800019
PM 19727185
ER
PT J
AU Zheng, JP
Birktoft, JJ
Chen, Y
Wang, T
Sha, RJ
Constantinou, PE
Ginell, SL
Mao, CD
Seeman, NC
AF Zheng, Jianping
Birktoft, Jens J.
Chen, Yi
Wang, Tong
Sha, Ruojie
Constantinou, Pamela E.
Ginell, Stephan L.
Mao, Chengde
Seeman, Nadrian C.
TI From molecular to macroscopic via the rational design of a
self-assembled 3D DNA crystal
SO NATURE
LA English
DT Article
ID NUCLEIC-ACID JUNCTIONS; HOLLIDAY JUNCTION; CRYSTALLIZATION; SUBSTRATE;
TRIANGLES
AB We live in a macroscopic three-dimensional (3D) world, but our best description of the structure of matter is at the atomic and molecular scale. Understanding the relationship between the two scales requires a bridge from the molecular world to the macroscopic world. Connecting these two domains with atomic precision is a central goal of the natural sciences, but it requires high spatial control of the 3D structure of matter(1). The simplest practical route to producing precisely designed 3D macroscopic objects is to form a crystalline arrangement by self-assembly, because such a periodic array has only conceptually simple requirements: a motif that has a robust 3D structure, dominant affinity interactions between parts of the motif when it self-associates, and predictable structures for these affinity interactions. Fulfilling these three criteria to produce a 3D periodic system is not easy, but should readily be achieved with well-structured branched DNA motifs tailed by sticky ends(2). Complementary sticky ends associate with each other preferentially and assume the well-known B-DNA structure when they do so(3); the helically repeating nature of DNA facilitates the construction of a periodic array. It is essential that the directions of propagation associated with the sticky ends do not share the same plane, but extend to form a 3D arrangement of matter. Here we report the crystal structure at 4 angstrom resolution of a designed, self-assembled, 3D crystal based on the DNA tensegrity triangle(4). The data demonstrate clearly that it is possible to design and self-assemble a well-ordered macromolecular 3D crystalline lattice with precise control.
C1 [Zheng, Jianping; Birktoft, Jens J.; Wang, Tong; Sha, Ruojie; Constantinou, Pamela E.; Seeman, Nadrian C.] NYU, Dept Chem, New York, NY 10003 USA.
[Chen, Yi; Mao, Chengde] Purdue Univ, Dept Chem, W Lafayette, IN 47907 USA.
[Ginell, Stephan L.] Argonne Natl Lab, Struct Biol Ctr, Argonne, IL 60439 USA.
RP Seeman, NC (reprint author), NYU, Dept Chem, New York, NY 10003 USA.
EM mao@purdue.edu; ned.seeman@nyu.edu
RI Chen, Yi/D-7943-2013
FU National Institute of General Medical Sciences; National Science
Foundation [CCF-0622093]; Army Research Office; Office of Naval
Research; W. M. Keck Foundation; NIH [1R21EB007472]; US Department of
Energy [DE-AC02-06CH11357]
FX This research has been supported by grants to N. C. S. from the National
Institute of General Medical Sciences, the National Science Foundation,
the Army Research Office, the Office of Naval Research and the W. M.
Keck Foundation. It has also been supported by NSF grant CCF-0622093 and
NIH grant 1R21EB007472 to C. M. We thank W. Sherman for assistance in
establishing the likely structural features of tensegrity triangles. We
thank R. Sweet, M. Allaire, H. Robinson, A. Saxena and A. Heroux at the
BNL-NSLS at beamlines X6A and X25 of the National Synchrotron Light
Source. BNL-NSLS is supported principally from the Offices of Biological
and Environmental Research and of Basic Energy Sciences of the US
Department of Energy, and from the National Center for Research
Resources of the National Institutes of Health. The use of the 19ID
beamline at the Structural Biology Center/Advanced Photon Source is
supported by the US Department of Energy, Office of Biological and
Environmental Research under contract DE-AC02-06CH11357.
NR 24
TC 340
Z9 346
U1 21
U2 194
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 0028-0836
J9 NATURE
JI Nature
PD SEP 3
PY 2009
VL 461
IS 7260
BP 74
EP 77
DI 10.1038/nature08274
PG 4
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 490DT
UT WOS:000269478800032
PM 19727196
ER
PT J
AU Mastroianni, AJ
Sivak, DA
Geissler, PL
Alivisatos, AP
AF Mastroianni, Alexander J.
Sivak, David A.
Geissler, Phillip L.
Alivisatos, A. Paul
TI Probing the Conformational Distributions of Subpersistence Length DNA
SO BIOPHYSICAL JOURNAL
LA English
DT Article
ID SMALL-ANGLE SCATTERING; NANOPARTICLE GROUPINGS; SINGLE-MOLECULE; DOUBLE
HELIX; BENT DNA; DISCRETE; MECHANICS; SCAFFOLDS; VIEW
AB We have measured the bending elasticity of short double-stranded DNA (dsDNA) chains through small-angle x-ray scattering from solutions of dsDNA-linked dinners of gold nanoparticles. This method, which does not require exertion of external forces or binding to a substrate, reports on the equilibrium distribution of bending fluctuations, not just an average value (as in ensemble fluorescence resonance energy transfer) or an extreme value (as in cyclization), and in principle provides a more robust data set for assessing the suitability of theoretical models. Our experimental results for dsDNA comprising 42-94 basepairs are consistent with a simple wormlike chain model of dsDNA elasticity, whose behavior we have determined from Monte Carlo simulations that explicitly represent nanoparticles and their alkane tethers. A persistence length of 50 nm (150 basepairs) gave a favorable comparison, consistent with the results of single-molecule force-extension experiments on much longer dsDNA chains, but in contrast to recent suggestions of enhanced flexibility at these length scales.
C1 [Mastroianni, Alexander J.; Geissler, Phillip L.; Alivisatos, A. Paul] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Sivak, David A.] Univ Calif Berkeley, Biophys Grad Grp, Berkeley, CA 94720 USA.
[Mastroianni, Alexander J.; Geissler, Phillip L.; Alivisatos, A. Paul] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Alivisatos, AP (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
EM alivis@berkeley.edu
RI Sivak, David/A-1605-2012; Alivisatos , Paul /N-8863-2015
OI Sivak, David/0000-0003-4815-4722; Alivisatos , Paul /0000-0001-6895-9048
FU United States Department of Energy [DE-AC02-05CH11231]; National Science
Foundation
FX A.J.M. acknowledges funding from the United States Department of Energy.
D.A.S. acknowledges support from a National Science Foundation Graduate
Research fellowship. This work was supported by the Director, Office of
Science, Office of Basic Energy Sciences of the U.S. Department of
Energy under contract No. DE-AC02-05CH11231.
NR 41
TC 51
Z9 52
U1 1
U2 28
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 0006-3495
J9 BIOPHYS J
JI Biophys. J.
PD SEP 2
PY 2009
VL 97
IS 5
BP 1408
EP 1417
DI 10.1016/j.bpj.2009.06.031
PG 10
WC Biophysics
SC Biophysics
GA 489OH
UT WOS:000269429400020
PM 19720029
ER
PT J
AU Okamoto, S
AF Okamoto, Satoshi
TI Surface magnetic phase transition of the double-exchange ferromagnet:
Schwinger-boson mean-field study
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
ID COLOSSAL MAGNETORESISTANCE; SPIN POLARIZATION; HEISENBERG MODELS;
MANGANITES; INTERFACE; INSULATOR; FILMS; RECONSTRUCTION; LA0.7SR0.3MNO3;
SUPERLATTICES
AB The surface magnetic phase transition of a double-exchange model for metallic manganites is studied using a Schwinger-boson mean-field method. About three unit-cells wide surface layers are identified. The magnetic moment in these layers decreases more rapidly than that in the bulk when the temperature is increased. This behavior is consistent with experimental observations. We also discuss the implication of this behavior on the tunneling magnetoresistance effect using manganites and possible improvement of the magnetoresistance effect near the bulk Curie temperature.
C1 Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Okamoto, S (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
EM okapon@ornl.gov
RI Okamoto, Satoshi/G-5390-2011
OI Okamoto, Satoshi/0000-0002-0493-7568
FU US Department of Energy
FX The author acknowledges useful discussions with K Bevan, R Fishman and Z
Y Zhang. This work was supported by the Division of Materials Sciences
and Engineering, Office of Basic Energy Sciences, US Department of
Energy.
NR 36
TC 2
Z9 2
U1 0
U2 0
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD SEP 2
PY 2009
VL 21
IS 35
AR 355601
DI 10.1088/0953-8984/21/35/355601
PG 7
WC Physics, Condensed Matter
SC Physics
GA 482EL
UT WOS:000268867100019
PM 21828638
ER
PT J
AU Paul, S
Santiso, EE
Nardelli, MB
AF Paul, Sujata
Santiso, Erik E.
Nardelli, Marco Buongiorno
TI Sequestration and selective oxidation of carbon monoxide on graphene
edges
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
ID NANOTUBES; GROWTH; FLUORESCENCE; SPECTROSCOPY; CHIRALITY
AB The versatility of carbon nanostructures makes them attractive as possible catalytic materials, as they can be synthesized in various shapes and chemically modified by doping, functionalization, and the creation of defects in the nanostructure. Recent research has shown how the properties of carbon nanostructures can be exploited to enhance the yield of chemical reactions such as the thermal decomposition of water (Kostov et al 2005 Phys. Rev. Lett. 95) and the dissociation of methane into carbon and hydrogen (Huang et al 2008 J. Chem. Phys. at press). In this work, we consider the carbon-mediated partial sequestration and selective oxidation of carbon monoxide (CO), both in the presence and absence of hydrogen. Using first-principles calculations we study several reactions of CO with carbon nanostructures, where the active sites can be regenerated by the deposition of carbon decomposed from the reactant (CO) to make the reactions self-sustained. Using statistical mechanics, we also study the conditions under which the conversion of CO to graphene and carbon dioxide is thermodynamically favorable, both in the presence and in the absence of hydrogen. These results are a first step toward the development of processes for the carbon-mediated partial sequestration and selective oxidation of CO in a hydrogen atmosphere.
C1 [Paul, Sujata; Nardelli, Marco Buongiorno] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA.
[Santiso, Erik E.] MIT, Dept Chem Engn, Cambridge, MA 02139 USA.
[Santiso, Erik E.] N Carolina State Univ, Dept Chem & Biomol Engn, Raleigh, NC 27695 USA.
[Nardelli, Marco Buongiorno] Oak Ridge Natl Lab, Comp Sci & Mat Div, Oak Ridge, TN 37831 USA.
RP Paul, S (reprint author), N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA.
RI Buongiorno Nardelli, Marco/C-9089-2009
FU NSF; BES DOE
FX This work has been supported in part by NSF and BES DOE. Calculations
have been carried out at NCCS-ORNL and NCSU-HPC.
NR 23
TC 2
Z9 2
U1 4
U2 31
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
EI 1361-648X
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD SEP 2
PY 2009
VL 21
IS 35
AR 355008
DI 10.1088/0953-8984/21/35/355008
PG 8
WC Physics, Condensed Matter
SC Physics
GA 482EL
UT WOS:000268867100010
PM 21828629
ER
PT J
AU Sharifzadeh, S
Huang, P
Carter, EA
AF Sharifzadeh, Sahar
Huang, Patrick
Carter, Emily A.
TI Origin of tunneling lineshape trends for Kondo states of Co adatoms on
coinage metal surfaces
SO JOURNAL OF PHYSICS-CONDENSED MATTER
LA English
DT Article
ID SINGLE MAGNETIC IMPURITY; AUGMENTED-WAVE METHOD;
CONFIGURATION-INTERACTION; ELECTRONIC-STRUCTURE; EXCITED-STATES;
ALL-ELECTRON; ATOMS; SPECTROSCOPY; SYSTEMS; AG
AB Embedded correlated wavefunction (ECW) theory is used to characterize the Kondo states formed by Co atoms adsorbed on Ag(111) and Ag(100). Clusters containing the adatom are described with CW theory, while effects of the extended crystal are included via an embedding potential. The predicted Co d-electronic structure, combined with earlier predictions for Co on Cu surfaces, explains the different tunneling behavior observed with the scanning tunneling microscope (STM) for Co adsorbed on different coinage metal surfaces.
C1 [Sharifzadeh, Sahar] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA.
[Huang, Patrick] Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Livermore, CA 94551 USA.
[Carter, Emily A.] Princeton Univ, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA.
[Carter, Emily A.] Princeton Univ, Program Appl & Computat Math, Princeton, NJ 08544 USA.
RP Sharifzadeh, S (reprint author), Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA.
EM eac@princeton.edu
RI Sharifzadeh, Sahar/L-9367-2013; Carter, Emily/P-4075-2014; Sharifzadeh,
Sahar/P-4881-2016;
OI Sharifzadeh, Sahar/0000-0003-4215-4668; Huang,
Patrick/0000-0003-4833-8134
FU Department of Energy, Basic Energy Sciences
FX We would like to thank Professors Peter Nordlander and Alexander
Schneider for useful discussions and are grateful for the financial
support of the Department of Energy, Basic Energy Sciences.
NR 44
TC 7
Z9 7
U1 1
U2 12
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0953-8984
J9 J PHYS-CONDENS MAT
JI J. Phys.-Condes. Matter
PD SEP 2
PY 2009
VL 21
IS 35
AR 355501
DI 10.1088/0953-8984/21/35/355501
PG 8
WC Physics, Condensed Matter
SC Physics
GA 482EL
UT WOS:000268867100017
PM 21828636
ER
PT J
AU Neville, SM
Halder, GJ
Chapman, KW
Duriska, MB
Moubaraki, B
Murray, KS
Kepert, CJ
AF Neville, Suzanne M.
Halder, Gregory J.
Chapman, Karena W.
Duriska, Martin B.
Moubaraki, Boujemaa
Murray, Keith S.
Kepert, Cameron J.
TI Guest Tunable Structure and Spin Crossover Properties in a Nanoporous
Coordination Framework Material
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID METAL-ORGANIC FRAMEWORK; TRANSITION; POLYMERS; COMPLEXES; MEMORY; 1D
AB The electronic switching properties of the nanoporous spin crossover framework [Fe(NCS)(2)(bpbd)(2)].x(guest), SCOF-2, can be rationally manipulated via sorption of a range of molecular guests (acetone, ethanol, methanol, propanol, 1-acetonitrile) into the 1-D channels of this material. Pronounced changes to the spin crossover properties are related directly to the steric and electronic influence of the individual guests: the degree of lattice cooperativity, as reflected in the abruptness of the transition and presence of hysteresis, is strongly influenced by the presence of cooperative host-guest interactions, and the temperature of the transition varies with guest polarity through a proposed electrostatic interaction.
C1 [Neville, Suzanne M.; Kepert, Cameron J.] Univ Sydney, Sch Chem, Sydney, NSW 2006, Australia.
[Neville, Suzanne M.; Duriska, Martin B.; Moubaraki, Boujemaa; Murray, Keith S.] Monash Univ, Sch Chem, Clayton, Vic 3800, Australia.
[Halder, Gregory J.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Chapman, Karena W.] Argonne Natl Lab, Adv Photon Source, Xray Sci Div, Argonne, IL 60439 USA.
RP Kepert, CJ (reprint author), Univ Sydney, Sch Chem, Sydney, NSW 2006, Australia.
EM c.kepert@chem.usyd.edu.au
RI Chapman, Karena/G-5424-2012; neville, suzanne/B-4531-2013; Halder,
Gregory/C-5357-2013; neville, suzanne/B-2254-2016;
OI neville, suzanne/0000-0003-4237-4046; Kepert,
Cameron/0000-0002-6105-9706
FU This work was supported by an Australian Research Council [DP0557000];
Australian Synchrotron Research Program
FX This work was supported by an Australian Research Council, Discovery
Project Grant (DP0557000) and the Australian Synchrotron Research
Program.
NR 28
TC 128
Z9 128
U1 3
U2 44
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD SEP 2
PY 2009
VL 131
IS 34
BP 12106
EP +
DI 10.1021/ja905360g
PG 5
WC Chemistry, Multidisciplinary
SC Chemistry
GA 488VY
UT WOS:000269379600040
PM 19705912
ER
PT J
AU Kozimor, SA
Yang, P
Batista, ER
Boland, KS
Burns, CJ
Clark, DL
Conradson, SD
Martin, RL
Wilkerson, MP
Wolfsberg, LE
AF Kozimor, Stosh A.
Yang, Ping
Batista, Enrique R.
Boland, Kevin S.
Burns, Carol J.
Clark, David L.
Conradson, Steven D.
Martin, Richard L.
Wilkerson, Marianne P.
Wolfsberg, Laura E.
TI Trends in Covalency for d- and f-Element Metallocene Dichlorides
Identified Using Chlorine K-Edge X-ray Absorption Spectroscopy and
Time-Dependent Density Functional Theory
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID METAL-LIGAND COVALENCY; ELECTRONIC-STRUCTURE; PHOTOELECTRON-SPECTRA;
ORGANOTITANIUM COMPLEXES; DINITROGEN COMPLEXES; ACTINIDE COMPLEXES;
URANYL-ION; OPEN-SHELL; URANIUM; CHEMISTRY
AB We describe the use of Cl K-edge X-ray absorption spectroscopy (XAS) and both ground-state and time-dependent hybrid density functional theory (DFT) to probe the electronic structure and determine the degree of orbital mixing in M-Cl bonds for (C(5)Me(5))(2)MCl(2) (M = Ti, 1; Zr, 2; Hf, 3; Th, 4; U, 5), where we can directly compare a class of structurally similar compounds for d- and f-elements. Pre-edge features in the Cl K-edge XAS data for the group IV transition-metals 1-3 provide direct evidence of covalent M-Cl orbital mixing. The amount of Cl 3p character was experimentally determined to be 25%, 23%, and 22% per M-Cl bond for 1-3, respectively. For actinides, we find a pre-edge shoulder for 4 (Th) and distinct and weak pre-edge features for U, 5. The amount of Cl 3p character was determined to be 9% for 5, and we were unable to make an experimental determination for 4. Using hybrid DFT calculations with relativistic effective core potentials, the electronic structures of 1-5 were calculated and used as a guide to interpret the experimental Cl K-edge XAS data. For transition-metal compounds 1-3, the pre-edge features arise due to transitions from Cl 1s electrons into the 3d-, 4d-, and 5d-orbitals, with assignments provided in the text. For Th, 4, we find that 5f- and 6d-orbitals are nearly degenerate and give rise to a single pre-edge shoulder in the XAS. For U, 5, we find the 5f- and 6d-orbitals fall into two distinct energy groupings, and Cl K-edge XAS data are interpreted in terms of Cl 1s transitions into both 5f- and 6d-orbitals. Time-dependent DFT was used to calculate the energies and intensities of Cl 1s transitions into empty metal-based orbitals containing Cl 3p character and provide simulated Cl K-edge XAS spectra for 1-4. For 5, which has two unpaired 5f electrons, simulated spectra were obtained from transition dipole calculations using ground-state Kohn-Sham orbitals. To the best of our knowledge, this represents the first application of Cl K-edge XAS to actinide systems. Overall, this study allows trends in orbital mixing within a well-characterized structural motif to be identified and compared between transition-metals and actinide elements. These results show that the orbital mixing for the cl-block compounds slightly decreases in covalency with increasing principal quantum number, in the order Ti > Zr approximate to Hf, and that uranium displays approximately half the covalent orbital mixing of transition elements.
C1 [Kozimor, Stosh A.; Yang, Ping; Batista, Enrique R.; Boland, Kevin S.; Burns, Carol J.; Clark, David L.; Conradson, Steven D.; Martin, Richard L.; Wilkerson, Marianne P.; Wolfsberg, Laura E.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Yang, Ping] Pacific NW Natl Lab, WR Wiley Environm Mol Sci Lab, Richland, WA 99352 USA.
RP Clark, DL (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM dlclark@lanl.gov
RI Yang, Ping/E-5355-2011; Clark, David/A-9729-2011
OI Yang, Ping/0000-0003-4726-2860;
FU U.S. Department of Energy [DE-AC52-06NA25396]
FX We are grateful to S. DeBeer George for helpful discussions, and
insights from several anonyrnous reviewers. This work was supported at
Los Alamos by the Division of Chemical Sciences, Geosciences, and
Biosciences, Office of Basic Energy Sciences, U.S. Department of Energy,
a Glenn T. Seaborg Institute Postdoctoral Fellowship (P.Y.), and a
Frederick Reines Postdoctoral Fellowship (S.A.K.). Portions of this
research were carried out at the Stanford Synchrotron Radiation
Lightsource, a national user facility operated by Stanford University on
behalf of the U.S. Department of Energy, Office of Basic Energy
Sciences. Los Alamos National Laboratory is operated by Los Alamos
National Security, LLC, for the National Nuclear Security Administration
of the U.S. Department of Energy under Contract DE-AC52-06NA25396.
NR 85
TC 91
Z9 91
U1 10
U2 61
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD SEP 2
PY 2009
VL 131
IS 34
BP 12125
EP 12136
DI 10.1021/ja9015759
PG 12
WC Chemistry, Multidisciplinary
SC Chemistry
GA 488VY
UT WOS:000269379600043
PM 19705913
ER
PT J
AU Steiner, SA
Baumann, TF
Bayer, BC
Blume, R
Worsley, MA
MoberlyChan, WJ
Shaw, EL
Schlogl, R
Hart, AJ
Hofmann, S
Wardle, BL
AF Steiner, Stephen A., III
Baumann, Theodore F.
Bayer, Bernhard C.
Blume, Raoul
Worsley, Marcus A.
MoberlyChan, Warren J.
Shaw, Elisabeth L.
Schloegl, Robert
Hart, A. John
Hofmann, Stephan
Wardle, Brian L.
TI Nanoscale Zirconia as a Nonmetallic Catalyst for Graphitization of
Carbon and Growth of Single- and Multiwall Carbon Nanotubes
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID GOLD NANOPARTICLE CATALYSTS; CHEMICAL-VAPOR-DEPOSITION; IN-SITU; X-RAY;
METAL-CATALYSTS; AEROGELS; REDUCTION; FIBERS; COMPOSITES; NUCLEATION
AB We report that nanoparticulate zirconia (ZrO(2)) catalyzes both growth of single-wall and multiwall carbon nanotubes (CNTs) by thermal chemical vapor deposition (CVD) and graphitization of solid amorphous carbon. We observe that silica-, silicon nitride-, and alumina-supported zirconia on silicon nucleates single- and multiwall carbon nanotubes upon exposure to hydrocarbons at moderate temperatures (750 degrees C). High-pressure, time-resolved X-ray photoelectron spectroscopy (XPS) of these substrates during carbon nanotube nucleation and growth shows that the zirconia catalyst neither reduces to a metal nor forms a carbide. Point-localized energy-dispersive X-ray spectroscopy (EDAX) using scanning transmission electron microscopy (STEM) confirms catalyst nanoparticles attached to CNTs are zirconia. We also observe that carbon aerogels prepared through pyrolysis of a Zr(IV)-containing resorcinol-formaldehyde polymer aerogel precursor at 800 degrees C contain fullerenic cage structures absent in undoped carbon aerogels. Zirconia nanoparticles embedded in these carbon aerogels are further observed to act as nucleation sites for multiwall carbon nanotube growth upon exposure to hydrocarbons at CVD growth temperatures. Our study unambiguously demonstrates that a nonmetallic catalyst can catalyze CNT growth by thermal CVD while remaining in an oxidized state and provides new insight into the interactions between nanoparticulate metal oxides and carbon at elevated temperatures.
C1 [Steiner, Stephen A., III; Hart, A. John; Wardle, Brian L.] MIT, Dept Aeronaut & Astronaut, Cambridge, MA 02139 USA.
[Baumann, Theodore F.; Worsley, Marcus A.; MoberlyChan, Warren J.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Bayer, Bernhard C.; Hofmann, Stephan] Univ Cambridge, Dept Engn, Cambridge CB3 0FA, England.
[Blume, Raoul; Schloegl, Robert] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany.
[Shaw, Elisabeth L.] MIT, Ctr Mat Sci & Engn, Cambridge, MA 02139 USA.
[Hart, A. John] Univ Michigan, Dept Mech Engn, Ann Arbor, MI 48109 USA.
RP Steiner, SA (reprint author), MIT, Dept Aeronaut & Astronaut, Cambridge, MA 02139 USA.
EM ssteiner@alum.mit.edu
RI Hart, A. John/A-9027-2010; Bayer, Bernhard/D-3655-2012; Hofmann,
Stephan/D-3906-2012; Worsley, Marcus/G-2382-2014
OI Hart, A. John/0000-0002-7372-3512; Bayer, Bernhard/0000-0002-4829-3207;
Hofmann, Stephan/0000-0001-6375-1459; Worsley,
Marcus/0000-0002-8012-7727
FU National Science Foundation [DMR 02-13282]; European Community [R II
3-CT-2004-506008]
FX We thank Dr. Desiree Plata for helpful discussions and review, Namiko
Yamamoto and Dr. Woo-Sik Kim for conducting e-beam depositions, Dr.
Roberto Guznldn de Villeria, Megan Tsai, and Richard Li for assistance
in parametric growth studies, Alfonso Reina and Federico Villalpando for
assistance in obtaining Rarnan spectra, Dr. Scott Speakman for
assistance in acquiring XRD patterns, Susie Evans for her time-critical
assistance in obtaining XPS spectra, and the technical support staff at
BESSY for their assistance in conducting in situ XPS CVD growth
experiments. We also thank TohoTenax Corporation and Hexcel Coporation
for their donation of carbon fiber and Aerogel Technologies, LLC, for
use of their supercritical dryers. S.H. acknowledges funding by the
Royal Society and Peterhouse, Cambridge. This work was supported by
Airbus S.A.S., Boeing, Embraer, Lockheed Martin, Saab AB, Spirit
AeroSystems, Textron Inc., Composite Systems Technology, and Tohotenai
through MIT's Nano-Engineered Composite aerospace STructures (NECST)
Consortium. This work made use of the Shared Experimental Facilities in
the MIT Center for Materials Science and Engineering supported by the
MRSEC Program of the National Science Foundation under Award Number DMR
02-13282. This work was supported by the European Community Research
Infrastructure Action under the FP6 "Structuring the European Research
Area" Programme (through the "Integrated Infrastructure Initiative"
Integrating Activity on Synchrotron and Free Electron Laser Science,
Contract R II 3-CT-2004-506008).
NR 73
TC 120
Z9 122
U1 20
U2 120
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD SEP 2
PY 2009
VL 131
IS 34
BP 12144
EP 12154
DI 10.1021/ja902913r
PG 11
WC Chemistry, Multidisciplinary
SC Chemistry
GA 488VY
UT WOS:000269379600045
PM 19663436
ER
PT J
AU Wang, J
Tafen, DN
Lewis, JP
Hong, ZL
Manivannan, A
Zhi, MJ
Li, M
Wu, NQ
AF Wang, Jin
Tafen, De Nyago
Lewis, James P.
Hong, Zhanglian
Manivannan, Ayyakkannu
Zhi, Mingjia
Li, Ming
Wu, Nianqiang
TI Origin of Photocatalytic Activity of Nitrogen-Doped TiO2 Nanobelts
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID SENSITIZED SOLAR-CELLS; VISIBLE-LIGHT IRRADIATION; TITANIUM-DIOXIDE;
PHOTOELECTRON-SPECTROSCOPY; OPTICAL-PROPERTIES; ANATASE TIO2; BAND-GAP;
OXIDE; CARBON; PHOTOACTIVITY
AB Experiments combined with the density functional theory (DFT) calculation have been performed to understand the underlying photocatalysis mechanism of the nitrogen-doped titania nanobelts. Nitrogen-doped anatase titania nanobelts a re prepared via hydrothermal processing and subsequent heat treatment in NH3. Both the nitrogen content and the oxygen vacancy concentration increase with increasing the NH3 treatment temperature. Nitrogen doping leads to an add-on shoulder on the edge of the valence band, the localized N 2p levels above the valence band maximum, and the 3d states of Ti3+ below the conduction band, which is confirmed by DFT calculation and X-ray photoelectron spectroscopy (XPS) measurement. Extension of the light absorption from the ultraviolet (UV) region to the visible-light region arises from the N 2p levels near the valence band and from the color centers induced by the oxygen vacancies and the Ti3+ species. Nitrogen doping allows visible-light-responsive photocatalytic activity but lowers UV-light-responsive photocatalytic activity. The visible-light photocatalytic activity originates from the N 2p levels near the valence band. The oxygen vacancies and the associated Ti3+ species act as the recombination centers for the photoinduced electrons and holes. They reduce the photocatalytic activity although they contribute to the visible light absorbance.
C1 [Wang, Jin; Zhi, Mingjia; Li, Ming; Wu, Nianqiang] W Virginia Univ, Dept Mech & Aerosp Engn, WVNano Initiat, Morgantown, WV 26506 USA.
[Tafen, De Nyago; Lewis, James P.; Manivannan, Ayyakkannu] W Virginia Univ, Dept Phys, Morgantown, WV 26506 USA.
[Hong, Zhanglian] Zhejiang Univ, State Key Lab Silicon Mat, Dept Mat Sci & Engn, Hangzhou 310027, Peoples R China.
[Manivannan, Ayyakkannu] US DOE, Natl Energy Technol Lab, Morgantown, WV 26506 USA.
RP Wu, NQ (reprint author), W Virginia Univ, Dept Mech & Aerosp Engn, WVNano Initiat, Morgantown, WV 26506 USA.
EM nick.wu@mail.wvu.edu
RI Zhi, Mingjia/A-6866-2010; Manivannan, Ayyakkannu/A-2227-2012; Li,
Ming/D-5108-2011; Wu, Nianqiang/B-9798-2015;
OI Zhi, Mingjia/0000-0002-4291-0809; Manivannan,
Ayyakkannu/0000-0003-0676-7918; Li, Ming/0000-0002-2289-0222; Wu,
Nianqiang/0000-0002-8888-2444; Tafen, De Nyago/0000-0002-4360-9508
FU NSF [CBET-0834233, EPS 0554328]; Eberly College of Arts and Sciences at
West Virginia University; Research Challenge Grant of West Virginia
State [EPS08-01]; West Virginia University Research Corporation; West
Virginia EPSCoR Office
FX This work is financially supported by an NSF grant (CBET-0834233), an
ARTS grant from Eberly College of Arts and Sciences at West Virginia
University, and the Research Challenge Grant of West Virginia State
(EPS08-01). Some of the facilities and resources used in this work are
supported by NSF Grant EPS 0554328 with matching funds from the West
Virginia University Research Corporation and the West Virginia EPSCoR
Office. We are grateful to Dr. Jianguo Zheng for his TEM measurements at
Materials Characterization Center, LEXI/Calit2, University of
California-Irvine.
NR 47
TC 547
Z9 557
U1 90
U2 548
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD SEP 2
PY 2009
VL 131
IS 34
BP 12290
EP 12297
DI 10.1021/ja903781h
PG 8
WC Chemistry, Multidisciplinary
SC Chemistry
GA 488VY
UT WOS:000269379600061
PM 19705915
ER
PT J
AU Yang, L
Fishbine, BH
Migliori, A
Pratt, LR
AF Yang, Lu
Fishbine, Brian H.
Migliori, Albert
Pratt, Lawrence R.
TI Molecular Simulation of Electric Double-Layer Capacitors Based on Carbon
Nanotube Forests
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID ELECTROCHEMICAL CAPACITORS; FORCE-FIELD; SINGLE
AB Described here are the first simulations of electric double-layer capacitors based on carbon nanotube forests modeled fully at a molecular level. The computations determine single-electrode capacitances in the neighborhood of 80 F/g, in agreement with experimental capacitances of electric edouble-layer capacitors utilizing carbon nanotube forests or carbide-derived carbons as electrode material. The capacitance increases modestly with the decrease of the pore size through radii greater than 1 nm, which is consistent with recent experiments on carbide-derived carbon electrodes. Because the various factors included in these simulations are precisely defined, these simulation data will help to disentangle distinct physical chemical factors that contribute to the performance of these materials, e.g., pore geometry, variable filling of the pores, pseudocapacitance, and electronic characteristics of the nanotubes.
C1 [Pratt, Lawrence R.] Tulane Univ, Dept Chem & Biomol Engn, New Orleans, LA 70118 USA.
[Yang, Lu; Fishbine, Brian H.; Migliori, Albert] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Pratt, LR (reprint author), Tulane Univ, Dept Chem & Biomol Engn, New Orleans, LA 70118 USA.
EM lpratt@tulane.edu
RI Yang, Lu/A-5446-2010; Pratt, Lawrence/H-7955-2012
OI Pratt, Lawrence/0000-0003-2351-7451
NR 19
TC 76
Z9 76
U1 7
U2 63
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
J9 J AM CHEM SOC
JI J. Am. Chem. Soc.
PD SEP 2
PY 2009
VL 131
IS 34
BP 12373
EP 12376
DI 10.1021/ja9044554
PG 4
WC Chemistry, Multidisciplinary
SC Chemistry
GA 488VY
UT WOS:000269379600072
PM 19655756
ER
PT J
AU Manandhar, P
Chen, KS
Aledealat, K
Mihajlovic, G
Yun, CS
Field, M
Sullivan, GJ
Strouse, GF
Chase, PB
von Molnar, S
Xiong, P
AF Manandhar, Pradeep
Chen, Kan-Sheng
Aledealat, Khaled
Mihajlovic, Goran
Yun, C. Steven
Field, Mark
Sullivan, Gerard J.
Strouse, Geoffrey F.
Chase, P. Bryant
von Molnar, Stephan
Xiong, Peng
TI The detection of specific biomolecular interactions with micro-Hall
magnetic sensors
SO NANOTECHNOLOGY
LA English
DT Article
ID SPIN-VALVE SENSORS; SUPERPARAMAGNETIC NANOPARTICLES; LABELED
BIOMOLECULES; BIOSENSORS; SURFACES
AB The detection of reagent-free specific biomolecular interactions through sensing of nanoscopic magnetic labels provides one of the most promising routes to biosensing with solid-state devices. In particular, Hall sensors based on semiconductor heterostructures have shown exceptional magnetic moment sensitivity over a large dynamic field range suitable for magnetic biosensing using superparamagnetic labels. Here we demonstrate the capability of such micro-Hall sensors to detect specific molecular binding using biotin-streptavidin as a model system. We apply dip-pen nanolithography to selectively biotinylate the active areas of InAs micro-Hall devices with nanoscale precision. Specific binding of complementarily functionalized streptavidin-coated superparamagnetic beads to the Hall crosses occurs via molecular recognition, and magnetic detection of the assembled beads is achieved at room temperature using phase sensitive micro-Hall magnetometry. The experiment constitutes the first unambiguous demonstration of magnetic detection of specific biomolecular interactions with semiconductor micro-Hall sensors, and the selective molecular functionalization and resulting localized bead assembly demonstrate the possibility of multiplexed sensing of multiple target molecules using a single device with an array of micro-Hall sensors.
C1 [Manandhar, Pradeep; Chen, Kan-Sheng; Aledealat, Khaled; von Molnar, Stephan; Xiong, Peng] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA.
[Manandhar, Pradeep; Chen, Kan-Sheng; Aledealat, Khaled; von Molnar, Stephan; Xiong, Peng] Florida State Univ, MARTECH, Tallahassee, FL 32306 USA.
[Mihajlovic, Goran] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Yun, C. Steven; Strouse, Geoffrey F.] Florida State Univ, Dept Chem & Biochem, Tallahassee, FL 32306 USA.
[Field, Mark; Sullivan, Gerard J.] Teledyne Sci Co LLC, Thousand Oaks, CA 90360 USA.
[Strouse, Geoffrey F.; Chase, P. Bryant; von Molnar, Stephan; Xiong, Peng] Florida State Univ, Integrat Nanosci Inst, Tallahassee, FL 32306 USA.
[Chase, P. Bryant] Florida State Univ, Dept Biol Sci, Tallahassee, FL 32306 USA.
RP Xiong, P (reprint author), Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA.
EM xiong@martech.fsu.edu
OI Chase, P. Bryant/0000-0001-9701-561X
FU NIH [GM079592]; NSF [ECS-0210332]
FX We acknowledge financial support by NIH (NIGMS grant GM079592) and NSF (
NIRT grant ECS-0210332).
NR 25
TC 25
Z9 25
U1 2
U2 23
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0957-4484
J9 NANOTECHNOLOGY
JI Nanotechnology
PD SEP 2
PY 2009
VL 20
IS 35
AR 355501
DI 10.1088/0957-4484/20/35/355501
PG 8
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Physics
GA 482TL
UT WOS:000268911500011
PM 19671978
ER
PT J
AU Poola, B
Wang, XP
Richmond, MG
AF Poola, Bhaskar
Wang, Xiaoping
Richmond, Michael G.
TI New rhenium(I) compounds containing the donor-acceptor diphosphine
ligands
2-(ferrocenylidene)-4,5-bis(diphenylphosphino)4-cyclopenten-1,3-dione
(fbpcd) and
2-(3-ferrocenylprop-2-ynylidene)-4,5-bis(diphenylphosphino)4-cyclopenten
-1,3-dione (fpbpcd): Electrochemical behavior, MO properties, and X-ray
diffraction structure of fac-BrRe(CO)(3)(fpbpcd)
SO POLYHEDRON
LA English
DT Article
DE Rhenium(I) compounds; Diphosphine ligands; Redox chemistry; Crystal
structure; Mo calculations
ID 2,3-BIS(DIPHENYLPHOSPHINO)MALEIC ANHYDRIDE BMA; LUMINESCENT PLATINUM(II)
COMPLEXES; BOND-CLEAVAGE REACTIVITY; ELECTRON-TRANSFER;
2-(FERROCENYLIDENE)-4,5-BIS(DIPHENYLPHOSPHINO)-4-CYCLOPENTEN-1,3-DIONE
FBPCD; 4,5-BIS(DIPHENYLPHOSPHINO)-4-CYCLOPENTEN-1,3-DIONE BPCD;
ORGANOMETALLIC COMPLEXES; PHOTOPHYSICAL PROPERTIES; CARBONYL-COMPLEXES;
CRYSTAL-STRUCTURE
AB Displacement of the labile THF molecules in BrRe(CO)(3)(THF)(2) (1) by the diphosphine ligands 2-(ferrocenylidene)-4,5-bis(diphenylphosphino)4-cyclopenten-1,3-dione (fbpcd) and 2-(3-ferrocenylprop-2-ynylidene)-4,5-bis(diphenylphosphino)4-cyclopenten-1,3-dione (fpbpcd) yields the mononuclear compounds fac-BrRe(CO)(3)(fbpcd) (2) and fac-BrRe(CO)3(fpbpcd) (3). respectively. The new ligand fpbpcd ligand has been synthesized from 3-ferrocenylpropynal and the parent diphosphine ligand 4,5-bis(diphenylphosphino)-4-cyclopenten-1,3-dione (bpcd) through a Knoevenagel condensation, 2 and 3 have been isolated and fully characterized by IR and NMR spectroscopies (H-1 and P-31), ESI mass spectrometry, and X-ray diffraction analysis in the case of 3. The electrochemical properties of compounds 2 and 3 have been examined by cyclic voltammetry, and the nature of the HOMO and LUMO levels in these systems has been confirmed by MO calculations at the extended Huckel level. The redox and MO data are discussed relative to the redox and orbital properties of related functionalized diphosphines based on the bpcd platform. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Wang, Xiaoping] Univ N Texas, Dept Chem, Denton, TX 76203 USA.
[Poola, Bhaskar; Richmond, Michael G.] Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA.
RP Wang, XP (reprint author), Univ N Texas, Dept Chem, Denton, TX 76203 USA.
EM wangx@ornl.gov; cobalt@unt.edu
RI Wang, Xiaoping/E-8050-2012
OI Wang, Xiaoping/0000-0001-7143-8112
FU Robert A. Welch Foundation [B-1093]
FX Continued financial support from the Robert A. Welch Foundation (Grant
B-1093) is greatly appreciated. Prof. Andreas H. Franz (UP) and Ms.
Nicole Ledbetter (UNT) are thanked for their expertise and help in
recording the mass spectra for compounds 2 and 3.
NR 65
TC 2
Z9 2
U1 1
U2 7
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0277-5387
J9 POLYHEDRON
JI Polyhedron
PD SEP 2
PY 2009
VL 28
IS 13
BP 2619
EP 2624
DI 10.1016/j.poly.2009.05.049
PG 6
WC Chemistry, Inorganic & Nuclear; Crystallography
SC Chemistry; Crystallography
GA 498FJ
UT WOS:000270122300014
ER
PT J
AU Fielden, J
Long, DL
Cronin, L
Kogerler, P
AF Fielden, John
Long, De-Liang
Cronin, Leroy
Koegerler, Paul
TI Synthesis of Cu(I) octamolybdates using tetrakis-acetonitrilecopper(I)
hexafluorophosphate
SO POLYHEDRON
LA English
DT Article
DE Polyoxometalates; Crystal structure; Copper(I) complex
ID STRUCTURAL CHARACTERIZATION; MASS-SPECTROMETRY; BUILDING-BLOCKS;
CLUSTER; COMPLEXES; GROWTH; FUNCTIONALIZATION; POLYOXOMOLYBDATES;
ARCHITECTURES; LIGANDS
AB Reaction of (NBu(4))(2)[Mo(2)O(7)] with [Cu(CH(3)CN)(4)](PF(6)) in acetonitrile results in isolation of the orange beta-octamolybdate [Cu(CH(3)CN)(4)](2)[Mo(8)O(26)Cu(2)(CH(3)CN)(4)] (1) along with the colourless alpha-octamolybdate [Cu(CH(3)CN)(4)](4)[Mo(8)O(26)]center dot 2CH(3)CN (2). Both products decompose rapidly upon removal from their mother liquors, forming an insoluble, dark brown coloured phase with the composition Cu(4)[Mo(8)O(26)]center dot 0.6CH(3)CN center dot 16H(2)O (3). The copper(I) acetonitrile derivatised isopolyanion in 1 thus represents an intermediate structure between the simple, underivatised octamolybdate 2 and fully condensed, polymeric phase 3. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Long, De-Liang; Cronin, Leroy] Univ Glasgow, WestCHEM, Glasgow G12 8QQ, Lanark, Scotland.
[Fielden, John; Koegerler, Paul] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
[Koegerler, Paul] Rhein Westfal TH Aachen, Inst Anorgan Chem, D-52074 Aachen, Germany.
RP Cronin, L (reprint author), Univ Glasgow, WestCHEM, Joseph Black Bldg,Univ Ave, Glasgow G12 8QQ, Lanark, Scotland.
EM L.Cronin@chem.gla.ac.uk; paul.koegerler@ac.rwth-aachen.de
RI Cronin, Leroy/B-7752-2008; Long, Deliang/C-3500-2011; Kogerler,
Paul/H-5866-2013
OI Cronin, Leroy/0000-0001-8035-5757; Kogerler, Paul/0000-0001-7831-3953
FU US Department of Energy [DEACD2 07CH11358]
FX We thank Dr. Arkady Ellern of Iowa State University for providing access
to, and training J.F. to use, a single crystal X-ray diffractometer.
Ames Laboratory is operated for the US Department of Energy by Iowa
State University under Contract No. DEACD2 07CH11358.
NR 26
TC 12
Z9 12
U1 0
U2 7
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0277-5387
J9 POLYHEDRON
JI Polyhedron
PD SEP 2
PY 2009
VL 28
IS 13
BP 2803
EP 2807
DI 10.1016/j.poly.2009.05.058
PG 5
WC Chemistry, Inorganic & Nuclear; Crystallography
SC Chemistry; Crystallography
GA 498FJ
UT WOS:000270122300041
ER
PT J
AU Ginsberg, NS
Cheng, YC
Fleming, GR
AF Ginsberg, Naomi S.
Cheng, Yuan-Chung
Fleming, Graham R.
TI Two-Dimensional Electronic Spectroscopy of Molecular Aggregates
SO ACCOUNTS OF CHEMICAL RESEARCH
LA English
DT Review
ID LIGHT-HARVESTING COMPLEX; IR-SPECTROSCOPY; RHODOPSEUDOMONAS-PALUSTRIS;
FEMTOSECOND SPECTROSCOPY; PHOTOSYNTHETIC APPARATUS;
INFRARED-SPECTROSCOPY; OPTICAL SPECTROSCOPY; ENERGY-TRANSFER; DYNAMICS;
COHERENCE
AB The properties of molecular aggregates, coupled clusters of small molecules, are often challenging to unravel because of their inherent complexity and disordered environments. Their structure-function relationships are often far from obvious. However, their ability to efficiently channel excitation energy over remarkable distances, as is the case in photosynthetic light harvesting, is a compelling motivation to investigate them. Understanding and subsequently mimicking the processes in photosynthesis, for example, will set the stage for considerable advances in using light harvesting to fuel renewable energy technologies.
Two-dimensional (2D) electronic spectroscopy is emerging as a nonlinear optical technique that provides significant insight into the interactions and dynamics of complex molecular systems. in addition to spectrally resolving excitation and emission energies over significant bandwidths with femtosecond resolution, this technique has already enabled discoveries about the structure and dynamics of photosynthetic light-harvesting complexes and other aggregates.
Multiple capabilities unique to 2D electronic spectroscopy enable such findings. For example, the spectral resolution of excitation and emission combined with the ability to eliminate the effects of static disorder can reveal the homogeneous line width of a transition and the different dynamic contributions to it. Two dimensional spectroscopy is also sensitive to electronic coherence and has been employed to identify and characterize coherent excitation energy transfer dynamics in photosynthetic systems and conjugated polymers.
The presence of cross-peaks, signals for which excitation and emission occur at different wavelengths, provides multiple forms of information. First, it allows the identification of states in congested spectra and reveals correlations between them. Second, we can track excitation energy flow from origin to terminus through multiple channels simultaneously. Finally, 2D electronic spectroscopy is uniquely sensitive to intermolecular electronic coupling through the sign and amplitude of the cross-peaks. This feature makes it possible to reveal spatial molecular configurations by probing electronic transitions. Another means of "resolving" these angstrom-scale arrangements is to manipulate the probing laser pulse polarizations. In this way, we can isolate and modulate specific processes in order to retrieve structural information.
In this Account, we demonstrate these capabilities through a close collaboration between experiments and modeling on isolated photosynthetic pigment-protein complexes and also on J-aggregates. Each of the probed systems we describe offers insights that-have both increased the utility of 2D electronic spectroscopy and led to discoveries about the molecular aggregates' dynamics and underlying structure.
C1 [Fleming, Graham R.] Univ Calif Berkeley, Calif Inst Quantitat Biosci, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
RP Fleming, GR (reprint author), Univ Calif Berkeley, Calif Inst Quantitat Biosci, Berkeley, CA 94720 USA.
EM GRFleming@LBL.gov
RI Cheng, Yuan-Chung/A-6566-2008
OI Cheng, Yuan-Chung/0000-0003-0125-4267
FU Office of Basic Energy Sciences, Chemical Sciences Division, U.S.
Department of Energy [DE-AC03-76SF000098]; Seaborg Fellowship at LBNL
FX This work was supported by the Office of Basic Energy Sciences, Chemical
Sciences Division, U.S. Department of Energy (Contract
DE-AC03-76SF000098). N.S.G. acknowledges support from a Seaborg
Fellowship at LBNL.
NR 54
TC 82
Z9 83
U1 9
U2 100
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0001-4842
J9 ACCOUNTS CHEM RES
JI Accounts Chem. Res.
PD SEP
PY 2009
VL 42
IS 9
SI SI
BP 1352
EP 1363
DI 10.1021/ar9001075
PG 12
WC Chemistry, Multidisciplinary
SC Chemistry
GA 495AL
UT WOS:000269861400016
PM 19691358
ER
PT J
AU Underwood, KD
Hemmert, KS
Ulmer, CD
AF Underwood, Keith D.
Hemmert, K. Scott
Ulmer, Craig D.
TI From Silicon to Science: The Long Road to Production Reconfigurable
Supercomputing
SO ACM TRANSACTIONS ON RECONFIGURABLE TECHNOLOGY AND SYSTEMS
LA English
DT Article
DE Design; Performance; Standardization; FPGA; HPC; reconfigurable
computing
AB The field of high performance computing (HPC) currently abounds with excitement about the potential of a broad class of things called accelerators. And, yet, few accelerator based systems are being deployed in general purpose HPC environments. Why is that? This article explores the challenges that accelerators face in the HPC world, with a specific focus on FPGA based systems. We begin with an overview of the characteristics and challenges of typical HPC systems and applications and discuss why FPGAs have the potential to have a significant impact. The bulk of the article is focused on twelve specific areas where FPGA researchers can make contributions to hasten the adoption of FPGAs in HPC environments.
C1 [Underwood, Keith D.] Intel Corp, Albuquerque, NM 87185 USA.
[Hemmert, K. Scott; Ulmer, Craig D.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Underwood, KD (reprint author), Intel Corp, POB 5200,MS-1319, Albuquerque, NM 87185 USA.
EM kdunder@gmail.com
FU United States Department of Energy's National Nuclear Security
Administration [DE-AC04-94AL85000]
FX Sandia is a multiprogram laboratory operated by Sandia Corporation, a
Lockheed Martin Company, for the United States Department of Energy's
National Nuclear Security Administration under contract
DE-AC04-94AL85000.
NR 50
TC 1
Z9 1
U1 1
U2 1
PU ASSOC COMPUTING MACHINERY
PI NEW YORK
PA 2 PENN PLAZA, STE 701, NEW YORK, NY 10121-0701 USA
SN 1936-7406
EI 1936-7414
J9 ACM T RECONFIG TECHN
JI ACM T. Reconfigurable Technol. Syst.
PD SEP
PY 2009
VL 2
IS 4
AR 26
DI 10.1145/1575779.1575786
PG 15
WC Computer Science, Hardware & Architecture
SC Computer Science
GA V20VE
UT WOS:000208166700007
ER
PT J
AU Pletnev, S
Morozova, KS
Verkhusha, VV
Dauter, Z
AF Pletnev, Sergei
Morozova, Kateryna S.
Verkhusha, Vladislav V.
Dauter, Zbigniew
TI Rotational order-disorder structure of fluorescent protein FP480
SO ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY
LA English
DT Article
DE order-disorder structures; rotational order-disorder; fluorescent
proteins
ID LATTICE-TRANSLOCATION DEFECTS; ONE-DIMENSIONAL DISORDER;
X-RAY-INTENSITIES; DIFFRACTION DATA; OD-STRUCTURES; CRYSTALS;
CRYSTALLOGRAPHY; SOFTWARE; ANTIBODY
AB In the last decade, advances in instrumentation and software development have made crystallography a powerful tool in structural biology. Using this method, structural information can now be acquired from pathological crystals that would have been abandoned in earlier times. In this paper, the order-disorder (OD) structure of fluorescent protein FP480 is discussed. The structure is composed of tetramers with 222 symmetry incorporated into the lattice in two different ways, namely rotated 90 degrees with respect to each other around the crystal c axis, with tetramer axes coincident with crystallographic twofold axes. The random distribution of alternatively oriented tetramers in the crystal creates a rotational OD structure with statistically averaged I422 symmetry, although the presence of very weak and diffuse additional reflections suggests that the randomness is only approximate.
C1 [Pletnev, Sergei] Argonne Natl Lab, SAIC Frederick Inc, Basic Res Program, Argonne, IL 60439 USA.
[Morozova, Kateryna S.; Verkhusha, Vladislav V.] Albert Einstein Coll Med, Dept Anat & Struct Biol, Bronx, NY 10467 USA.
[Dauter, Zbigniew] Natl Canc Inst, Synchrotron Radiat Res Sect, MCL, Argonne Natl Lab, Bronx, NY 10461 USA.
RP Pletnev, S (reprint author), Argonne Natl Lab, SAIC Frederick Inc, Basic Res Program, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM svp@ncifcrf.gov; dauter@anl.gov
FU National Cancer Institute, National Institutes of Health
[HHSN261200800001E, GM073913]; US Department of Energy, Office of
Science, Office of Basic Energy Sciences [W-31-109-Eng-38]
FX This work was supported in part by Federal funds from the National
Cancer Institute, National Institutes of Health (NIH; contract No.
HHSN261200800001E), the Intramural Research Program of the NIH, National
Cancer Institute, Center for Cancer Research and by a grant from the NIH
(GM073913) to VVV. The content of this publication does not necessarily
reflect the views or policies of the Department of Health and Human
Services, nor does the mention of trade names, commercial products or
organizations imply endorsement by the US Government. Diffraction data
were collected on the SER-CAT ID22 and GM-CA/CAT 23ID beamlines at the
Advanced Photon Source, Argonne National Laboratory. Use of the Advanced
Photon Source was supported by the US Department of Energy, Office of
Science, Office of Basic Energy Sciences under Contract No.
W-31-109-Eng-38.
NR 32
TC 17
Z9 17
U1 0
U2 1
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0907-4449
J9 ACTA CRYSTALLOGR D
JI Acta Crystallogr. Sect. D-Biol. Crystallogr.
PD SEP
PY 2009
VL 65
BP 906
EP 912
DI 10.1107/S0907444909020927
PN 9
PG 7
WC Biochemical Research Methods; Biochemistry & Molecular Biology;
Biophysics; Crystallography
SC Biochemistry & Molecular Biology; Biophysics; Crystallography
GA 488LA
UT WOS:000269350000004
PM 19690368
ER
PT J
AU Praznikar, J
Afonine, PV
Guncar, G
Adams, PD
Turk, D
AF Praznikar, Jure
Afonine, Pavel V.
Guncar, Gregor
Adams, Paul D.
Turk, Dusan
TI Averaged kick maps: less noise, more signal...and probably less bias
SO ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY
LA English
DT Article
DE kick maps; OMIT maps; density-map calculation; model bias; maximum
likelihood
ID II FRUCTOSE-1,6-BISPHOSPHATE ALDOLASE; HEAVY-ATOM METHOD;
CRYSTAL-STRUCTURE; MODEL BIAS; CHOLINE-ACETYLTRANSFERASE; MOLECULAR
REPLACEMENT; ANGSTROM RESOLUTION; MAXIMUM-LIKELIHOOD; PATTERSON
FUNCTION; COLLAGEN-IV
AB Use of reliable density maps is crucial for rapid and successful crystal structure determination. Here, the averaged kick (AK) map approach is investigated, its application is generalized and it is compared with other map-calculation methods. AK maps are the sum of a series of kick maps, where each kick map is calculated from atomic coordinates modified by random shifts. As such, they are a numerical analogue of maximum-likelihood maps. AK maps can be unweighted or maximum-likelihood (Sigma(A)) weighted. Analysis shows that they are comparable and correspond better to the final model than Sigma(A) and simulated-annealing maps. The AK maps were challenged by a difficult structure-validation case, in which they were able to clarify the problematic region in the density without the need for model rebuilding. The conclusion is that AK maps can be useful throughout the entire progress of crystal structure determination, offering the possibility of improved map interpretation.
C1 [Afonine, Pavel V.; Adams, Paul D.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Adams, Paul D.] Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA.
EM dusan.turk@ijs.si
RI Adams, Paul/A-1977-2013
OI Adams, Paul/0000-0001-9333-8219
FU Structural Biology [P1-0048]; PHENIX [1P01 GM063210]; US Department of
Energy [DE-AC02-05CH11231]
FX The Slovenian Research Agency is gratefully acknowledged for providing a
young researcher scholarship and financial support of the Structural
Biology program P1-0048. PDA would like to thank NIH/NIGMS for generous
support of the PHENIX project (1P01 GM063210). This work was supported
in part by the US Department of Energy under Contract No.
DE-AC02-05CH11231.
NR 63
TC 39
Z9 39
U1 1
U2 4
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0907-4449
J9 ACTA CRYSTALLOGR D
JI Acta Crystallogr. Sect. D-Biol. Crystallogr.
PD SEP
PY 2009
VL 65
BP 921
EP 931
DI 10.1107/S0907444909021933
PG 11
WC Biochemical Research Methods; Biochemistry & Molecular Biology;
Biophysics; Crystallography
SC Biochemistry & Molecular Biology; Biophysics; Crystallography
GA 488LA
UT WOS:000269350000006
PM 19690370
ER
PT J
AU Tsai, YS
Sawaya, MR
Yeates, TO
AF Tsai, Yingssu
Sawaya, Michael R.
Yeates, Todd O.
TI Analysis of lattice-translocation disorder in the layered hexagonal
structure of carboxysome shell protein CsoS1C
SO ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY
LA English
DT Article
DE translocation disorders; hexamer; carboxysome shell; symmetry
enhancement; order-disorder; modulated structures
ID X-RAY-INTENSITIES; DIFFRACTION ENHANCEMENT; CRYSTAL-STRUCTURE;
OD-STRUCTURES; DEFECTS; MICROCOMPARTMENTS; COMPONENTS; ORGANELLES;
SYMMETRY
AB Lattice-translocation or crystal order-disorder phenomena occur when some layers or groups of molecules in a crystal are randomly displaced relative to other groups of molecules by a discrete set of vectors. In previous work, the effects of lattice translocation on diffraction intensities have been corrected by considering that the observed intensities are the product of the intensities from an ideal crystal (lacking disorder) multiplied by the squared magnitude of the Fourier transform of the set of translocation vectors. Here, the structure determination is presented of carboxysome protein CsoS1C from Halothiobacillius neapolitanus in a crystal exhibiting a lattice translocation with unique features. The diffraction data are fully accounted for by a crystal unit cell composed of two layers of cyclic protein hexamers. The first layer is fully ordered (i.e. has one fixed position), while the second layer randomly takes one of three alternative positions whose displacements are related to each other by threefold symmetry. Remarkably, the highest symmetry present in the crystal is P3, yet the intensity data (and the Patterson map) obey 6/m instead of symmetry; the intensities exceed the symmetry expected from combining the crystal space group with an inversion center. The origin of this rare phenomenon, known as symmetry enhancement, is discussed and shown to be possible even for a perfectly ordered crystal. The lattice-translocation treatment described here may be useful in analyzing other cases of disorder in which layers or groups of molecules are shifted in multiple symmetry-related directions.
C1 [Sawaya, Michael R.; Yeates, Todd O.] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90024 USA.
[Tsai, Yingssu] Univ Calif Los Angeles, Inst Mol Biol, Los Angeles, CA 90024 USA.
[Sawaya, Michael R.; Yeates, Todd O.] UCLA DOE Inst Genom & Prote, Los Angeles, CA USA.
RP Yeates, TO (reprint author), Univ Calif Los Angeles, Dept Chem & Biochem, 405 Hilgard Ave, Los Angeles, CA 90024 USA.
EM yeates@mbi.ucla.edu
OI Yeates, Todd/0000-0001-5709-9839; Sawaya, Michael/0000-0003-0874-9043
FU NSF [MCB-0843065]
FX We thank Gordon Cannon and Sabine Heinhorst at the University of
Southern Mississippi for the vector containing CsoS1C. We thank Jason
Navarro and Duilio Cascio at UCLA and the staff at APS Beamline 24-ID-C
for their help. We thank Garib Murshudov for making available the
version of REFMAC5 capable of refining overlapping molecules. This work
was supported by NSF Grant MCB-0843065.
NR 35
TC 25
Z9 27
U1 0
U2 4
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0907-4449
J9 ACTA CRYSTALLOGR D
JI Acta Crystallogr. Sect. D-Biol. Crystallogr.
PD SEP
PY 2009
VL 65
BP 980
EP 988
DI 10.1107/S0907444909025153
PG 9
WC Biochemical Research Methods; Biochemistry & Molecular Biology;
Biophysics; Crystallography
SC Biochemistry & Molecular Biology; Biophysics; Crystallography
GA 488LA
UT WOS:000269350000012
PM 19690376
ER
PT J
AU Nowak, E
Brzuszkiewicz, A
Dauter, M
Dauter, Z
Rosenbaum, G
AF Nowak, Elzbieta
Brzuszkiewicz, Anna
Dauter, Miroslawa
Dauter, Zbigniew
Rosenbaum, Gerd
TI To scavenge or not to scavenge: that is the question
SO ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY
LA English
DT Article
DE protein crystallography; radiation damage; scavengers; nicotinic acid
ID RADIATION-DAMAGE; PROTEIN CRYSTALS; CRYOCRYSTALLOGRAPHY;
CRYSTALLOGRAPHY; REDUCTION; DECAY
AB Analysis of a series of diffraction data sets measured from four native as well as four nicotinic acid-soaked crystals of trypsin at 100 K shows a high variability in radiation-sensitivity among individual crystals for both nicotinic acid-soaked and native crystals. The level of radiation-sensitivity and the extent of its variability is statistically indistinguishable between the two conditions. This suggests that this potential scavenger does not have any statistically significant effect on the amount of radiation damage incurred in the crystals on X-ray irradiation. This is in contrast to previous results [Kauffmann et al. (2006), Structure, 14, 1099-1105] where only one crystal specimen was used for each condition (native and nicotinic acid-soaked).
C1 [Nowak, Elzbieta; Brzuszkiewicz, Anna; Dauter, Zbigniew] Natl Canc Inst, Synchrotron Radiat Res Sect, MCL, Argonne Natl Lab, Argonne, IL 60439 USA.
[Dauter, Miroslawa] Argonne Natl Lab, SAIC Frederick Inc, Basic Res Program, Argonne, IL 60439 USA.
[Rosenbaum, Gerd] Univ Georgia, Dept Biochem, SER CAT APS, Argonne, IL 60439 USA.
RP Dauter, Z (reprint author), Natl Canc Inst, Synchrotron Radiat Res Sect, MCL, Argonne Natl Lab, Argonne, IL 60439 USA.
EM dauter@anl.gov; rosenbaum@anl.gov
FU National Cancer Institute; National Institutes of Health [NO1-CO-12400];
US Department of Energy, Office of Science, Office of Basic Energy
Sciences [W-31-109-Eng-38]
FX This work was supported in part with Federal funds from the National
Cancer Institute, National Institutes of Health contract No.
NO1-CO-12400 and the Intramural Research Program of the NIH, National
Cancer Institute, Center for Cancer Research. The content of this
publication does not necessarily reflect the views or policies of the
Department of Health and Human Services, nor does the mention of trade
names, commercial products or organizations imply endorsement by the US
Government. Diffraction data were collected on the SER-CAT beamline
22-ID at the Advanced Photon Source, Argonne National Laboratory. Use of
the Advanced Photon Source was supported by the US Department of Energy,
Office of Science, Office of Basic Energy Sciences under Contract No.
W-31-109-Eng-38.
NR 14
TC 14
Z9 14
U1 0
U2 3
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0907-4449
J9 ACTA CRYSTALLOGR D
JI Acta Crystallogr. Sect. D-Biol. Crystallogr.
PD SEP
PY 2009
VL 65
BP 1004
EP 1006
DI 10.1107/S0907444909026821
PG 3
WC Biochemical Research Methods; Biochemistry & Molecular Biology;
Biophysics; Crystallography
SC Biochemistry & Molecular Biology; Biophysics; Crystallography
GA 488LA
UT WOS:000269350000015
PM 19690379
ER
PT J
AU Klepeis, JHP
Evans, WJ
Zaitseva, N
Schwegler, E
Teat, SJ
AF Klepeis, Jae-Hyun Park
Evans, William J.
Zaitseva, Natalia
Schwegler, Eric
Teat, Simon J.
TI Ammonium salicylate: a synchrotron study
SO ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE
LA English
DT Article
ID ORGANIC SCINTILLATORS; RUBIDIUM
AB The structure of the title salt, NH4+center dot C7H5O3-, is stabilized by substantial hydrogen bonding between ammonium cations and salicylate anions that links the components into a two-dimensional array.
C1 [Klepeis, Jae-Hyun Park; Evans, William J.; Zaitseva, Natalia; Schwegler, Eric] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Teat, Simon J.] UC Berkeley, Adv Light Source, Berkeley, CA 94720 USA.
RP Klepeis, JHP (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave, Livermore, CA 94550 USA.
EM klepeis2@llnl.gov
RI Schwegler, Eric/F-7294-2010; Schwegler, Eric/A-2436-2016
OI Schwegler, Eric/0000-0003-3635-7418
FU Laboratory Directed Research and Development program office
[07-ERD-045]; US Department of Energy [DE-AC57097NA27344,
DE-AC02-05CH11231]; Director, Office of Science, Office of Basic Energy
Sciences (OBES)
FX This work was supported by the Laboratory Directed Research and
Development program office (07-ERD-045) at LLNL and performed under the
auspices of the US Department of Energy by Lawrence Livermore National
Laboratory under Contract DE-AC57097NA27344. The ALS is supported by the
Director, Office of Science, Office of Basic Energy Sciences (OBES), and
the OBES Division of Chemical Sciences, Geosciences, and Biosciences of
the US Department of Energy at LBNL under Contract No.
DE-AC02-05CH11231.
NR 13
TC 5
Z9 5
U1 0
U2 6
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 1600-5368
J9 ACTA CRYSTALLOGR E
JI Acta Crystallogr. Sect. E.-Struct Rep. Online
PD SEP
PY 2009
VL 65
BP O2062
EP U1222
DI 10.1107/S1600536809029857
PN 9
PG 10
WC Crystallography
SC Crystallography
GA 490SA
UT WOS:000269523400101
PM 21577486
ER
PT J
AU Brzuszkiewicz, A
Nowak, E
Dauter, Z
Dauter, M
Cieslinski, H
Dlugolecka, A
Kur, J
AF Brzuszkiewicz, Anna
Nowak, Elzbieta
Dauter, Zbigniew
Dauter, Miroslawa
Cieslinski, Hubert
Dlugolecka, Anna
Kur, Jozef
TI Structure of EstA esterase from psychrotrophic Pseudoalteromonas sp 643A
covalently inhibited by monoethylphosphonate
SO ACTA CRYSTALLOGRAPHICA SECTION F-STRUCTURAL BIOLOGY COMMUNICATIONS
LA English
DT Article
ID COLD-ADAPTED ESTERASE; ESCHERICHIA-COLI; ACTIVE ESTERASE; GENE CLONING;
CLASSIFICATION; REFINEMENT; SEQUENCE
AB The crystal structure of the esterase EstA from the cold-adapted bacterium Pseudoalteromonas sp. 643A was determined in a covalently inhibited form at a resolution of 1.35 angstrom S. The enzyme has a typical SGNH hydrolase structure consisting of a single domain containing a five-stranded beta-sheet, with three helices at the convex side and two helices at the concave side of the sheet, and is ornamented with a couple of very short helices at the domain edges. The active site is located in a groove and contains the classic catalytic triad of Ser, His and Asp. In the structure of the crystal soaked in diethyl p-nitrophenyl phosphate (DNP), the catalytic serine is covalently connected to a phosphonate moiety that clearly has only one ethyl group. This is the only example in the Protein Data Bank of a DNP-inhibited enzyme with covalently bound monoethylphosphate.
C1 [Brzuszkiewicz, Anna; Nowak, Elzbieta; Dauter, Zbigniew] Argonne Natl Lab, NCI, MCL, Synchrotron Radiat Res Sect, Argonne, IL 60439 USA.
[Dauter, Miroslawa] Argonne Natl Lab, Basic Res Program, SAIC Frederick Inc, Argonne, IL 60439 USA.
[Cieslinski, Hubert; Dlugolecka, Anna; Kur, Jozef] Gdansk Univ Technol, Dept Microbiol, PL-80952 Gdansk, Poland.
RP Dauter, Z (reprint author), Argonne Natl Lab, NCI, MCL, Synchrotron Radiat Res Sect, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM dauter@anl.gov; kur@chem.pg.gda.pl
FU National Cancer Institute, National Institutes of Health [NO1-CO-12400];
NIH, National Cancer Institute, Center for Cancer Research; US
Department of Energy, Office of Science, Office of Basic Energy Sciences
[W-31-109-Eng-38]
FX This work was supported in part by Federal funds from the National
Cancer Institute, National Institutes of Health contract No.
NO1-CO-12400 and the Intramural Research Program of the NIH, National
Cancer Institute, Center for Cancer Research. The content of this
publication does not necessarily reflect the views or policies of the
Department of Health and Human Services, nor does the mention of trade
names, commercial products or organizations imply endorsement by the US
Government. Diffraction data were collected on the SBC 22-ID beamline at
the Advanced Photon Source, Argonne National Laboratory. Use of the
Advanced Photon Source was supported by the US Department of Energy,
Office of Science, Office of Basic Energy Sciences under Contract No.
W-31-109-Eng-38.
NR 23
TC 7
Z9 7
U1 0
U2 4
PU INT UNION CRYSTALLOGRAPHY
PI CHESTER
PA 2 ABBEY SQ, CHESTER, CH1 2HU, ENGLAND
SN 2053-230X
J9 ACTA CRYSTALLOGR F
JI Acta Crystallogr. F-Struct. Biol. Commun.
PD SEP
PY 2009
VL 65
BP 862
EP 865
DI 10.1107/S1744309109030826
PN 9
PG 4
WC Biochemical Research Methods; Biochemistry & Molecular Biology;
Biophysics; Crystallography
SC Biochemistry & Molecular Biology; Biophysics; Crystallography
GA 489CX
UT WOS:000269398400002
PM 19724118
ER
PT J
AU Pant, P
Budai, JD
Aggarwal, R
Narayan, RJ
Narayan, J
AF Pant, P.
Budai, J. D.
Aggarwal, R.
Narayan, Roger J.
Narayan, J.
TI Thin film epitaxy and structure property correlations for non-polar ZnO
films
SO ACTA MATERIALIA
LA English
DT Article
DE Diffraction; Pulsed laser deposition; Strain; ZnO non-polar oxide thin
film; TEM
ID OPTICAL-PROPERTIES; SAPPHIRE; GROWTH; TEMPERATURE
AB Heteroepitaxial growth and strain relaxation were investigated in non-polar a-plane (1 1 -2 0)ZnO films grown on r-plane (10 -1 2)sapphire substrates in the temperature range 200-700 degrees C by pulsed laser deposition. The lattice misfit in the plane of the film for this orientation varied from -1.26% in [0 0 0 1] to -18.52% in the [-1 10 0] direction. The alignment of (1 1 -2 0)ZnO planes parallel to (10 -1 2)sapphire planes was confirmed by X-ray diffraction theta-2 theta scans over the entire temperature range. X-ray phi-scans revealed the epitaxial relationship:[0 0 0 1]ZnO parallel to[-1 10 1]sap; [-1 1 0 0]ZnO parallel to[-1 -1 2 0]sap. Depending on the growth temperature, variations in the structural, optical and electrical properties were observed in the grown films. Room temperature photoluminescence for films grown at 700 degrees C shows a strong band-edge emission. The ratio of the band-edge emission to green band emission is 135: 1, indicating reduced defects and excellent optical quality of the films. The resistivity data for the films grown at 700 degrees C shows semiconducting behavior with room temperature resistivity of 2.2 x 10(-3) Omega-CM. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Pant, P.; Aggarwal, R.; Narayan, Roger J.; Narayan, J.] N Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA.
[Budai, J. D.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Narayan, Roger J.] Univ N Carolina, Joint Dept Biomed Engn, Chapel Hill, NC 27599 USA.
RP Pant, P (reprint author), N Carolina State Univ, Dept Mat Sci & Engn, EB 1,Centennial Campus, Raleigh, NC 27695 USA.
EM ppant@ncsu.edu
RI Narayan, Jagdish/D-1874-2009; Narayan, Roger/J-2789-2013; Budai,
John/R-9276-2016
OI Narayan, Roger/0000-0002-4876-9869; Budai, John/0000-0002-7444-1306
FU National Science Foundation; DOE Office of Science; DMS
FX The research was supported by the National Science Foundation. The work
was also supported by the DOE Office of Science, DMS under contract with
ORNL, managed by UT-Battelle, LLC.
NR 14
TC 31
Z9 31
U1 2
U2 12
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
J9 ACTA MATER
JI Acta Mater.
PD SEP
PY 2009
VL 57
IS 15
BP 4426
EP 4431
DI 10.1016/j.actamat.2009.05.031
PG 6
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 489LA
UT WOS:000269420400009
ER
PT J
AU Leonard, KJ
Tewari, R
Arya, A
Mishurda, JC
Dey, GK
Vasudevan, VK
AF Leonard, K. J.
Tewari, R.
Arya, A.
Mishurda, J. C.
Dey, G. K.
Vasudevan, V. K.
TI Decomposition of the PO phase to the P6(3)/mcm, hP18 structure in
Nb-(24-36)Ti-40Al alloys
SO ACTA MATERIALIA
LA English
DT Article
DE Nb-Ti-Al alloys; Phase transformations; Phase stability; Omega phase;
Transmission electron microscopy
ID TI-AL SYSTEM; TRANSFORMATIONS; DEFORMATION
AB During the course of investigation of the phase equilibria in the Nb-Ti-Al system, decomposition of the ordered B2/beta(omicron) phase to an ordered omega-type product was observed in three Nb-(24-36)Ti-40Al (at.%) alloys following aging at 700 degrees C and on quenching from high-temperatures. Using transmission electron microscopy and X-ray diffraction techniques, this phase was determined as the hP18 variant of the P6(3)/mcm structure, with lattice parameters a(omicron) = 7.96 angstrom and c(omicron) = 5.57 angstrom, and an a(omicron) approximate to a(beta)root 6 and c(omicron) approximate to a(beta)root 3 relationship with the parent beta(omicron) phase. Ab initio calculations were carried out to estimate the energy of formation of various phases and to also establish the role of Nb in the stabilization of the hP18 phase. The results of the evolution and stability of this structure are presented and discussed. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Vasudevan, V. K.] Univ Cincinnati, Dept Chem & Mat Engn, Cincinnati, OH 45221 USA.
[Leonard, K. J.] Oak Ridge Natl Lab, MST Div, Oak Ridge, TN 37831 USA.
[Tewari, R.; Arya, A.; Dey, G. K.] Bhabha Atom Res Ctr, Div Mat Sci, Mumbai 400085, Maharashtra, India.
[Mishurda, J. C.] Aeronca Inc, Middletown, OH 45042 USA.
RP Vasudevan, VK (reprint author), Univ Cincinnati, Dept Chem & Mat Engn, Cincinnati, OH 45221 USA.
EM vijay.vasudevan@uc.edu
FU Air Force Office of Scientific Research [F49620-95-1-0116, AA-SERT
F49620-95-1-0478]
FX Support for this research from the Air Force Office of Scientific
Research under Grants F49620-95-1-0116, AA-SERT F49620-95-1-0478, Drs
Spencer Wu and Craig S. Hartley, Program Monitors, is deeply
appreciated. The authors are also grateful to the Air Force Research
Laboratory, WPAFB, Dayton, OH, for providing the alloys used in this
work and for the use of various facilities (arc melting, heat
treatments, DTA, chemical analysis). In addition, the authors wish to
thank Dr. Dennis M. Dimiduk (AFRL) for helpful discussions and
assistance, Mr. Mark Dodd (UES) for help with some of the heat
treatments and Mr. Tom Kerschner (UES) for the chemical analysis of the
alloys.
NR 32
TC 6
Z9 7
U1 3
U2 10
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
EI 1873-2453
J9 ACTA MATER
JI Acta Mater.
PD SEP
PY 2009
VL 57
IS 15
BP 4440
EP 4453
DI 10.1016/j.actamat.2009.06.006
PG 14
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 489LA
UT WOS:000269420400011
ER
PT J
AU Santofimia, MJ
Speer, JG
Clarke, AJ
Zhao, L
Sietsma, J
AF Santofimia, M. J.
Speer, J. G.
Clarke, A. J.
Zhao, L.
Sietsma, J.
TI Influence of interface mobility on the evolution of austenite-martensite
grain assemblies during annealing
SO ACTA MATERIALIA
LA English
DT Article
DE Quenching; Annealing; Steels; Diffusion; Thermodynamics
ID PHASE-TRANSFORMATION; TEMPERED MARTENSITE; P PROCESS; CARBON; STEEL;
ORTHOEQUILIBRIUM; PARAEQUILIBRIUM; MIGRATION; DEFINITIONS; DIFFUSION
AB The quenching and partitioning (Q&P) process is a new heat treatment for the creation of advanced high-strength steels. This treatment consists of an initial partial or full austenitization, followed by a quench to form a controlled amount of martensite and an annealing step to partition carbon atoms from the martensite to the austenite. In this work, the microstructural evolution during annealing of martensite-austenite grain assemblies has been analyzed by means of a modeling approach that considers the influence of martensite-austenite interface migration on the kinetics of carbon partitioning. Carbide precipitation is precluded in the model, and three different assumptions about interface mobility are considered, ranging from a completely immobile interface to the relatively high mobility of an incoherent ferrite-austenite interface. Simulations indicate that different interface mobilities lead to profound differences in the evolution of microstructure that is predicted during annealing. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Santofimia, M. J.; Zhao, L.] Mat Innovat Inst, NL-2628 CD Delft, Netherlands.
[Santofimia, M. J.; Zhao, L.; Sietsma, J.] Delft Univ Technol, Dept Mat Sci & Engn, NL-2628 CD Delft, Netherlands.
[Speer, J. G.] Colorado Sch Mines, Adv Steel Proc & Prod Res Ctr, Golden, CO 80401 USA.
[Clarke, A. J.] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
RP Santofimia, MJ (reprint author), IMDEA Mat, ETS Ingn Caminos, Madrid 28040, Spain.
EM mariajesus.santofimia@imdea.org
RI Zhao, Lie/C-1150-2008; Santofimia, Maria Jesus/C-3979-2013; Sietsma,
Jilt/E-8123-2013
OI Zhao, Lie/0000-0002-7364-4769; Santofimia, Maria
Jesus/0000-0002-1628-7611;
FU Research Program of the Materials Innovation Institute M2i [MC5. 05233];
Netherlands Institute for Metals Research; Corus RDT; Advanced Steel
Processing and Products Research Center (ASPPRC)
FX This research was carried out under the Project No. MC5. 05233 in the
framework of the Research Program of the Materials Innovation Institute
M2i (www.m2i.nl), the former Netherlands Institute for Metals Research.
The authors would like to thank Dr. Dave Hanlon and Dr. Theo Kop (Corus
RD&T) for fruitful discussions. The support of Corus RD&T to this
project is acknowledged, along with the Advanced Steel Processing and
Products Research Center (ASPPRC).
NR 31
TC 52
Z9 55
U1 3
U2 36
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
J9 ACTA MATER
JI Acta Mater.
PD SEP
PY 2009
VL 57
IS 15
BP 4548
EP 4557
DI 10.1016/j.actamat.2009.06.024
PG 10
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 489LA
UT WOS:000269420400021
ER
PT J
AU Wright, WJ
Samale, MW
Hufnagel, TC
LeBlanc, MM
Florando, JN
AF Wright, Wendelin J.
Samale, M. W.
Hufnagel, T. C.
LeBlanc, M. M.
Florando, J. N.
TI Studies of shear band velocity using spatially and temporally resolved
measurements of strain during quasistatic compression of a bulk metallic
glass
SO ACTA MATERIALIA
LA English
DT Article
DE Metallic glasses; Shear band velocity; Plastic deformation; Compression
test
ID TRANSMISSION ELECTRON-MICROSCOPY; AMORPHOUS-ALLOYS; PLASTIC-FLOW;
SERRATED FLOW; DEFORMATION; TEMPERATURE; NANOCRYSTALLIZATION;
NANOINDENTATION; PD40NI40P20; BEHAVIOR
AB We have made measurements of the temporal and spatial features of the evolution of strain during the serrated flow of Pd(40)Ni(40)P(20) bulk metallic glass tested under quasistatic, room temperature, uniaxial compression. Strain and load data were acquired at rates of up to 400 kHz using strain gages affixed to all four sides of the specimen and a piezoelectric load cell located near the specimen. Calculation of the displacement rate requires an assumption about the nature of the shear displacement. If one assumes that the entire shear plane displaces simultaneously, the displacement rate is approximately 0.002 in s(-1). If instead one assumes that the displacement occurs as a localized propagating front, the velocity of the front is approximately 2.8 in s(-1). In either case, the velocity is orders of magnitude less than the shear wave speed (similar to 2000 in s(-1)). The significance of these measurements for estimates of heating in shear bands is discussed. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Wright, Wendelin J.; Samale, M. W.] Santa Clara Univ, Dept Mech Engn, Santa Clara, CA 95053 USA.
[Hufnagel, T. C.] Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA.
[LeBlanc, M. M.; Florando, J. N.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Wright, WJ (reprint author), Santa Clara Univ, Dept Mech Engn, Santa Clara, CA 95053 USA.
EM wwright@scu.edu
RI Hufnagel, Todd/A-3309-2010;
OI Hufnagel, Todd/0000-0002-6373-9377; Wright, Wendelin/0000-0001-6493-6025
FU National Science Foundation [DMR-0705517]
FX The authors gratefully acknowledge the contributions of W.D. Nix to the
early experiments that resulted in this work [16,17]. The authors also
thank S. Hruszkewycz for preparing the
Pd40Ni40P20 ingots. WJW and MWS were
funded by the Lawrence Livermore National Laboratory under Subcontract
B565228. TCH gratefully acknowledges support from the National Science
Foundation under Grant DMR-0705517. The work of JNF and MML was
performed under the auspices of the US Department of Energy by Lawrence
Livermore National Laboratory under Contract DE-AC52-07NA27344.
NR 54
TC 63
Z9 63
U1 2
U2 50
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
J9 ACTA MATER
JI Acta Mater.
PD SEP
PY 2009
VL 57
IS 16
BP 4639
EP 4648
DI 10.1016/j.actamat.2009.06.013
PG 10
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 498SQ
UT WOS:000270163900001
ER
PT J
AU Kelekanjeri, VSKG
Moss, LK
Gerhardt, RA
Ilavsky, J
AF Kelekanjeri, V. Siva Kumar G.
Moss, Lewis K.
Gerhardt, Rosario A.
Ilavsky, Jan
TI Quantification of the coarsening kinetics of gamma ' precipitates in
Waspaloy microstructures with different prior homogenizing treatments
SO ACTA MATERIALIA
LA English
DT Article
DE Nickel-base superalloy; Precipitate coarsening; Microstructure;
Four-point probe resistivity; Ultra-small-angle X-ray scattering
ID ANGLE NEUTRON-SCATTERING; X-RAY-SCATTERING; ALLOYS; SUPERALLOY
AB We report on quantification of the gamma' precipitate population, and its coarsening behavior, in controlled Waspaloy microstructures synthesized to possess 7 matrix grain sizes ranging from 13 to 89 mu m. The grain microstructures were produced by initial solution-treatments at 1045, 1090 and 1145 degrees C. The gamma' precipitates were obtained by aging at 779 and 796 degrees C for times ranging from 0.1 to 263.5 h. Specimen characterization was conducted via optical microscopy and scanning electron microscopy, DC four-point probe resistivity and ex situ ultra-small-angle X-ray scattering (USAXS) experiments at each aging time. The gamma' size distribution, obtained from the USAXS analysis, transformed from an initial unimodal to an eventual bimodal distribution with continued aging. The overall coarsening kinetics, although non-steady state, followed t(1/3) behavior, when the primary gamma' radius was used as the quantifying precipitate dimension. The coarsening rate constants were primarily determined by the aging temperature used, while the influence of prior homogenizing treatments was minimal to non-existent. A generic correlation was found to exist between a newly proposed figure-of-merit of scattering, eta based on the USAXS-derived gamma' precipitate distribution(s) and the measured electrical resistivity. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Kelekanjeri, V. Siva Kumar G.; Moss, Lewis K.; Gerhardt, Rosario A.] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA.
[Ilavsky, Jan] Argonne Natl Lab, Xray Operat Div, Argonne, IL 60439 USA.
RP Gerhardt, RA (reprint author), Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA.
EM rosario.gerhardt@mse.gatech.edu
RI USAXS, APS/D-4198-2013; Gerhardt, Rosario/D-6573-2012
OI Gerhardt, Rosario/0000-0001-8774-0842
FU US Department of Energy [DE-FG 02-03-ER 46035, DE-AC02-06CH11357]
FX The authors gratefully acknowledge funding from the US Department of
Energy under Grant DE-FG 02-03-ER 46035. Use of the Advanced Photon
Source was supported by the US Department of Energy, Office of Science,
Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357.
The assistance provided by Ricky Whelchel in the preparation of some of
the USAXS specimens analyzed here is much appreciated.
NR 27
TC 10
Z9 10
U1 1
U2 16
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
J9 ACTA MATER
JI Acta Mater.
PD SEP
PY 2009
VL 57
IS 16
BP 4658
EP 4670
DI 10.1016/j.actamat.2009.06.019
PG 13
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 498SQ
UT WOS:000270163900003
ER
PT J
AU Zhou, XW
Moody, NR
Jones, RE
Zimmerman, JA
Reedy, ED
AF Zhou, X. W.
Moody, N. R.
Jones, R. E.
Zimmerman, J. A.
Reedy, E. D.
TI Molecular-dynamics-based cohesive zone law for brittle interfacial
fracture under mixed loading conditions: Effects of elastic constant
mismatch
SO ACTA MATERIALIA
LA English
DT Article
DE Cohesive interface separation; Fracture; Molecular dynamics; Cohesive
surface model; Loading mode-mixity
ID THERMAL-CONDUCTIVITY; THIN-FILMS; SIMULATIONS; REPRESENTATION;
SUPERLATTICE; DELAMINATION; COATINGS; ALUMINUM; FAILURE
AB One approach for performing a finite-element simulation of interfacial fracture is to use a cohesive zone model. The cohesive zone model defines the interfacial traction-separation relation. Experimental determination of such a relation has been difficult. Most previous work has been confined to tensile loading, and much less has been devoted to mixed-mode loading conditions. Even so, specific laws are often assumed rather than predicted. Our recent work has used molecular dynamics (MD) simulation methods to derive a general cohesive zone law for the fracture between two brittle materials under any mixed-mode loading conditions. Here we extend our method and use it to explore the effect of elastic constant mismatch between adjacent materials. In particular, we construct two bilayer structures where the cohesive energies and lattice constants of the constituent materials are kept the same, but the elastic constant mismatch of the two materials in one structure differs from that in the other. We then use MD simulations to study the fracture and to derive the cohesive zone laws for both structures. The effect of elastic constant mismatch on fracture will then be discussed. Published by Elsevier Ltd on behalf of Acta Materialia Inc.
C1 [Zhou, X. W.; Jones, R. E.; Zimmerman, J. A.] Sandia Natl Labs, Mech Mat Dept, Livermore, CA 94550 USA.
[Moody, N. R.] Sandia Natl Labs, Analyt Mat Sci Dept, Livermore, CA 94550 USA.
[Reedy, E. D.] Sandia Natl Labs, Appl Mech Dev Dept, Albuquerque, NM 87185 USA.
RP Zhou, XW (reprint author), Sandia Natl Labs, Mech Mat Dept, Livermore, CA 94550 USA.
EM xiaowang.zhou@gmail.com
RI Zimmerman, Jonathan/A-8019-2012
NR 25
TC 27
Z9 27
U1 1
U2 20
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
J9 ACTA MATER
JI Acta Mater.
PD SEP
PY 2009
VL 57
IS 16
BP 4671
EP 4686
DI 10.1016/j.actamat.2009.06.023
PG 16
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 498SQ
UT WOS:000270163900004
ER
PT J
AU Taylor, CD
Lillard, RS
AF Taylor, Christopher D.
Lillard, R. Scott
TI Ab-initio calculations of the hydrogen-uranium system: Surface
phenomena, absorption, transport and trapping
SO ACTA MATERIALIA
LA English
DT Article
DE Uranium; Hydrogen absorption; Hydrides; Density functional theory
ID BRILLOUIN-ZONE INTEGRATIONS; HYDRIDING KINETICS; SOLUBILITY; ADSORPTION;
PRESSURE; DENSITY; METALS
AB Density functional theory was applied to the initial steps of uranium hydriding: surface phenomena, absorption, bulk transport and trapping. H adsorbs exothermically to the (0 0 1) surface, yet H absorption into the bulk is endothermic, with off-center octahedral absorption having the lowest absorption energy of 0.39 eV, relative to molecular H-2. H absorption in interstitial sites causes a local softening of the bulk modulus. Diffusion of H in unstrained alpha-U has a barrier of 0.6 eV. The energy of H absorption adjacent to the chemical impurities C, S, Si was lowered by an amount proportional to the size of the impurity atom, and the resulting lattice strain Si > S > C. Thus, impurities may promote hydriding by providing surfaces or prestrained zones for H uptake. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Taylor, Christopher D.; Lillard, R. Scott] Los Alamos Natl Lab, Los Alamos, NM 87544 USA.
RP Taylor, CD (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87544 USA.
EM cdtaylor@lanl.gov
FU Seaborg Institute (LANL); Enhanced Surveillance Program (Tom Zocco);
U.S. Department of Energy [DE-AC52-06NA25396]
FX The Los Alamos National Laboratory is operated by Los Alamos National
Security LLC for the National Nuclear Security Administration of the
U.S. Department of Energy under contract DE-AC52-06NA25396. Fruitful
discussions with John Scully, Matt Neurock and Robert Kelly (University
of Virginia), as well as Bogdan Mihaila, Roland Schulze, Jennifer
Lillard and Dave Teter (LANL) are gratefully acknowledged. We also
acknowledge the support of the Seaborg Institute (LANL) and the Enhanced
Surveillance Program (Tom Zocco) for funding this work.
NR 37
TC 18
Z9 19
U1 3
U2 20
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
J9 ACTA MATER
JI Acta Mater.
PD SEP
PY 2009
VL 57
IS 16
BP 4707
EP 4715
DI 10.1016/j.actamat.2009.06.055
PG 9
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 498SQ
UT WOS:000270163900007
ER
PT J
AU Jiang, C
AF Jiang, Chao
TI First-principles study of ternary bcc alloys using special quasi-random
structures
SO ACTA MATERIALIA
LA English
DT Article
DE Special quasi-random structures; Thermodynamics; CALPHAD;
First-principle electron theory
ID TRANSITION-METAL ALLOYS; THERMODYNAMIC PROPERTIES;
ELECTRONIC-PROPERTIES; 1ST PRINCIPLES; REPRESENTATION; APPROXIMATION;
EXPANSIONS; STABILITY; SYSTEMS; PHASES
AB Using a combination of exhaustive enumeration and Monte Carlo simulated annealing, we have developed special quasi-random structures (SQSs) for ternary body-centered cubic (bcc) alloys with compositions of A(1)B(1)C(1), A(2)B(1)C(1), A(6)B(1)C(1) and A(2)B(3)C(3), respectively. The structures possess local pair and multisite correlation functions that closely mimic those of the random bcc alloy. We employed the SQSs to predict the mixing enthalpies, nearest neighbor bond length distributions and electronic density of states of bcc Mo-Nb-Ta and Mo-Nb-V solid solutions. Our convergence tests indicate that even small-sized SQSs can give reliable results. Based on the SQS energetics, the predicting powers of the existing empirical ternary extrapolation models were assessed. The present results suggest that it is important to take into account the ternary interaction parameter in order to accurately describe the thermodynamic behaviors of ternary alloys. The proposed SQSs are quite general and can be applied to other ternary bcc alloys. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Jiang, Chao] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China.
[Jiang, Chao] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Jiang, C (reprint author), Los Alamos Natl Lab, 3-1698,MailStop G755, Los Alamos, NM 87545 USA.
EM chao@lanl.gov
RI Jiang, Chao/A-2546-2011; Jiang, Chao/D-1957-2017
OI Jiang, Chao/0000-0003-0610-6327
FU Shenghua Professorship Foundation of Central South University
FX This work was partially supported by the Shenghua Professorship
Foundation of Central South University. All calculations are performed
using the parallel computing facilities at Los Alamos National
Laboratory.
NR 46
TC 17
Z9 17
U1 5
U2 19
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
J9 ACTA MATER
JI Acta Mater.
PD SEP
PY 2009
VL 57
IS 16
BP 4716
EP 4726
DI 10.1016/j.actamat.2009.06.026
PG 11
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 498SQ
UT WOS:000270163900008
ER
PT J
AU Yapici, GG
Tome, CN
Beyerlein, IJ
Karaman, I
Vogel, SC
Liu, C
AF Yapici, G. G.
Tome, C. N.
Beyerlein, I. J.
Karaman, I.
Vogel, S. C.
Liu, C.
TI Plastic flow anisotropy of pure zirconium after severe plastic
deformation at room temperature
SO ACTA MATERIALIA
LA English
DT Article
DE Zirconium; Equal-channel angular extrusion; Anisotropy; Texture;
Twinning
ID CHANNEL ANGULAR EXTRUSION; CLOSE-PACKED METALS; TEXTURE EVOLUTION;
MICROSTRUCTURE EVOLUTION; BASAL SLIP; CONSTITUTIVE LAW; SINGLE-CRYSTALS;
SIMPLE SHEAR; ALLOYS; ZR
AB The present work investigates the plastic flow anisotropy of zirconium following one pass of equal-channel angular extrusion (ECAE) at room temperature in a 90 degrees die. Samples were oriented with their strong basal pole texture either aligned with or perpendicular to the extrusion direction prior to processing, which leads to two significantly different starting textures. After ECAE, the samples were compressed to 30% along one of three sample directions. A visco-plastic self-consistent polycrystal model was used to determine the mechanisms responsible for the observed anisotropy. Using the same single-crystal material parameters, the model reasonably predicts texture evolution and the post-compression stress-strain response. We found that basal slip is crucial in reproducing the experimental results, and twinning makes an important contribution. These findings are noteworthy because basal slip is not active in zirconium at room temperature, and grain size reductions associated with ECAE are expected to suppress deformation twinning. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Beyerlein, I. J.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Yapici, G. G.; Karaman, I.] Texas A&M Univ, Dept Mech Engn, College Stn, TX 77843 USA.
[Tome, C. N.; Liu, C.] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
[Vogel, S. C.] Los Alamos Natl Lab, Los Alamos Neutron Sci Ctr, Los Alamos, NM 87545 USA.
[Yapici, G. G.] Schlumberger Technol Corp, Rosharon, TX 77583 USA.
RP Beyerlein, IJ (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
EM Irene@lan1.gov
RI Karaman, Ibrahim/E-7450-2010; Lujan Center, LANL/G-4896-2012; Zhang,
Jing/B-1421-2012; Tome, Carlos/D-5058-2013; Beyerlein,
Irene/A-4676-2011;
OI Karaman, Ibrahim/0000-0001-6461-4958; Vogel, Sven C./0000-0003-2049-0361
FU National Science Foundation [CMMI 01-34554]; Department of Energy,
Office of Basic Energy Sciences Project [FWP 06SCPE401]; Alamos National
Laboratory
FX This work was supported by the National Science Foundation Contract No.
CMMI 01-34554, Materials Design and Surface Engineering Program,
Directorate of Engineering, Arlington, Virginia. IJB and CNT acknowledge
support by the Department of Energy, Office of Basic Energy Sciences
Project FWP 06SCPE401. GGY is thankful for support from Los Alamos
National Laboratory.
NR 52
TC 41
Z9 42
U1 0
U2 22
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6454
EI 1873-2453
J9 ACTA MATER
JI Acta Mater.
PD SEP
PY 2009
VL 57
IS 16
BP 4855
EP 4865
DI 10.1016/j.actamat.2009.06.050
PG 11
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 498SQ
UT WOS:000270163900023
ER
PT J
AU Kardol, P
Newton, JS
Bezemer, TM
Maraun, M
van der Putten, WH
AF Kardol, Paul
Newton, Jeffrey S.
Bezemer, T. Martijn
Maraun, Mark
van der Putten, Wim H.
TI Contrasting diversity patterns of soil mites and nematodes in secondary
succession
SO ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY
LA English
DT Article
DE Alpha diversity; Beta diversity; Biodiversity; Ex-arable land; Gamma
diversity; Grasslands; Nematoda; Old fields; Oribatida; Restoration
ID ORIBATID-MITE; PLANT-COMMUNITIES; LAND ABANDONMENT; ARABLE LAND;
FOOD-WEB; BIODIVERSITY; ACARI; ECOSYSTEM; DYNAMICS; AGROECOSYSTEMS
AB Soil biodiversity has been recognized as a key feature of ecosystem functioning and stability. However, soil biodiversity is strongly impaired by agriculture and relatively little is known on how and at what spatial and temporal scales soil biodiversity is restored after the human disturbances have come to an end. Here, a multi-scale approach was used to compare diversity patterns of soil mites and nematodes at four stages (early, mid, late, reference site) along a secondary succession chronosequence from abandoned arable land to heath land. In each field four soil samples were taken during four successive seasons. We determined soil diversity within samples (alpha-diversity), between samples (beta-diversity) and within field sites (gamma-diversity). The patterns of alpha- and gamma-diversity developed similarly along the chronosequence for oribatid mites, but not for nematodes. Nematode alpha-diversity was highest in mid- and late-successional sites, while gamma-diversity was constant along the chronosequence. Oribatid mite beta-diversity was initially high, but decreased thereafter, whereas nematode beta-diversity increased when succession proceeded: indicating that patterns of within-site heterogeneity diverged for oribatid mites and nematodes. The spatio-temporal diversity patterns after land abandonment suggest that oribatid mite community development depends predominantly on colonization of new taxa, whereas nematode community development depends on shifts in dominance patterns. This would imply that at old fields diversity patterns of oribatid mites are mainly controlled by dispersal, whereas diversity patterns of nematodes are mainly controlled by changing abiotic or biotic soil conditions. Our Study shows that the restoration of soil biodiversity along secondary successional gradients can be both scale- and phylum-dependent. Published by Elsevier Masson SAS.
C1 [Kardol, Paul] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37821 USA.
[Kardol, Paul; Newton, Jeffrey S.; Bezemer, T. Martijn; van der Putten, Wim H.] Netherlands Inst Ecol NIOO KNAW, Ctr Terr Ecol, NL-6666 ZG Heteren, Netherlands.
[Newton, Jeffrey S.] Univ Alberta, Dept Biol Sci, Edmonton, AB T6G 2E9, Canada.
[Bezemer, T. Martijn; van der Putten, Wim H.] Univ Wageningen & Res Ctr, Nematol Lab, NL-6700 ES Wageningen, Netherlands.
[Maraun, Mark] Univ Gottingen, Inst Zool & Anthropol, D-37073 Gottingen, Germany.
RP Kardol, P (reprint author), Oak Ridge Natl Lab, Div Environm Sci, POB 2008,MS 6422, Oak Ridge, TN 37821 USA.
EM p.kardol@gmail.com
RI Kardol, Paul/A-2600-2010; van der Putten, Wim/C-3707-2011; Bezemer,
Martijn/A-4068-2009; Kardol, Paul/N-8383-2015
OI van der Putten, Wim/0000-0002-9341-4442; Bezemer,
Martijn/0000-0002-2878-3479; Kardol, Paul/0000-0001-7065-3435
NR 59
TC 14
Z9 15
U1 3
U2 32
PU GAUTHIER-VILLARS/EDITIONS ELSEVIER
PI PARIS
PA 23 RUE LINOIS, 75015 PARIS, FRANCE
SN 1146-609X
J9 ACTA OECOL
JI Acta Oecol.-Int. J. Ecol.
PD SEP-OCT
PY 2009
VL 35
IS 5
BP 603
EP 609
DI 10.1016/j.actao.2009.05.006
PG 7
WC Ecology
SC Environmental Sciences & Ecology
GA 506BP
UT WOS:000270748300006
ER
PT J
AU Cai, R
Lindquist, WB
Um, W
Jones, KW
AF Cai, Rong
Lindquist, W. Brent
Um, Wooyong
Jones, Keith W.
TI Tomographic analysis of reactive flow induced pore structure changes in
column experiments
SO ADVANCES IN WATER RESOURCES
LA English
DT Article
DE Flow-column experiments; X-ray computed micro-tomography; Reactive flow
ID TANK-WASTE LEACHATE; HYPERALKALINE CONDITIONS; PHASE TRANSFORMATIONS;
PRECIPITATION; DISSOLUTION; CANCRINITE; STRONTIUM; SEDIMENTS; SODALITE;
CESIUM
AB We utilize synchrotron X-ray computed micro-tomography to capture and quantify snapshots in time of dissolution and secondary precipitation in the microstructure of Hanford sediments exposed to simulated caustic waste in flow-column experiments. The experiment is complicated somewhat as logistics dictated that the column spent significant amounts of time in a sealed state (acting as a batch reactor). Changes accompanying a net reduction in porosity of 4% were quantified including: (1) a 25% net decrease in pores resulting from a 38% loss in the number of pores < 10(-4) mm(3) in volume and a 13% increase in the number of pores of larger size; and (2) a 38% decrease in the number of throats. The loss of throats resulted in decreased coordination number for pores of all sizes and significant reduction in the number of pore pathways. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Cai, Rong; Lindquist, W. Brent] SUNY Stony Brook, Dept Appl Math & Stat, Stony Brook, NY 11794 USA.
[Um, Wooyong] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Jones, Keith W.] Brookhaven Natl Lab, Dept Environm Sci, Upton, NY 11973 USA.
RP Cai, R (reprint author), SUNY Stony Brook, Dept Appl Math & Stat, Stony Brook, NY 11794 USA.
EM rongcai@ams.sunysb.edu; blindquist@notes.cc.sunysb.edu;
wooyong.um@pnl.gov; kwj@bnl.gov
NR 31
TC 17
Z9 17
U1 0
U2 16
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0309-1708
J9 ADV WATER RESOUR
JI Adv. Water Resour.
PD SEP
PY 2009
VL 32
IS 9
BP 1396
EP 1403
DI 10.1016/j.advwatres.2009.06.006
PG 8
WC Water Resources
SC Water Resources
GA 493UI
UT WOS:000269763400003
ER
PT J
AU Field, JP
Breshears, DD
Whicker, JJ
AF Field, Jason P.
Breshears, David D.
Whicker, Jeffrey J.
TI Toward a more holistic perspective of soil erosion: Why aeolian research
needs to explicitly consider fluvial processes and interactions
SO AEOLIAN RESEARCH
LA English
DT Review
DE Aeolian; Fluvial; Wind erosion; Water erosion; Dust; Sediment
ID WIND EROSION; WATER EROSION; DRYLAND ENVIRONMENTS; SEMIARID SHRUBLAND;
SEDIMENT TRANSPORT; DESERT GRASSLAND; NORTH-AMERICA; LOESS PLATEAU;
NEW-MEXICO; DUST
AB Soil erosion is driven by not only aeolian but also fluvial transport processes, yet these two types of processes are usually studied independently, thereby precluding effective assessment of overall erosion, potential interactions between the two drivers, and their relative sensitivities to projected changes in climate and land use. Here we provide a perspective that aeolian and fluvial transport processes need to be considered in concert relative to total erosion and to potential interactions, that relative dominance and sensitivity to disturbance vary with mean annual precipitation, and that there are important scale-dependencies associated with aeolian fluvial interactions. We build on previous literature to present relevant conceptual syntheses highlighting these issues. We then highlight relative investments that have been made in soil erosion and sediment control by comparing the amount of resources allocated to aeolian and fluvial research using readily available metrics. Literature searches suggest that aeolian transport may be somewhat understudied relative to fluvial transport and, most importantly, that only a relatively small number of studies explicitly consider both aeolian and fluvial transport processes. Numerous environmental issues associated with intensification of land use and climate change impacts depend on not only overall erosion rates but also on differences and interactions between aeolian and fluvial processes. Therefore, a more holistic viewpoint of erosional processes that explicitly considers both aeolian and fluvial processes and their interactions is needed to optimize management and deployment of resources to address imminent changes in land use and climate. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Field, Jason P.; Breshears, David D.] Univ Arizona, Sch Nat Resources, Inst Study Planet Earth, Tucson, AZ 85721 USA.
[Breshears, David D.] Univ Arizona, Dept Ecol & Evolutionary Biol, Tucson, AZ 85721 USA.
[Whicker, Jeffrey J.] Los Alamos Natl Lab, Environm Programs, Los Alamos, NM 87545 USA.
RP Field, JP (reprint author), Univ Arizona, Sch Nat Resources, Inst Study Planet Earth, Tucson, AZ 85721 USA.
EM jpfield@email.arizona.edu
FU Arizona Agricultural Experiment Station; U.S. Department of Agriculture
Cooperative State Research, Education, and Extension Service [CSREES
2005-38420-15809]; National Science Foundation [NSF-DEB 0816162];
Department of Energy [DE-AC52-06NA25396]
FX This paper was developed with support of the Arizona Agricultural
Experiment Station (DDB), the U.S. Department of Agriculture Cooperative
State Research, Education, and Extension Service (JPF, DDB; CSREES
2005-38420-15809), the National Science Foundation (DDB, JPF; NSF-DEB
0816162), and the Department of Energy (JJW; DE-AC52-06NA25396). We
thank D.J. Law for assistance.
NR 79
TC 43
Z9 46
U1 2
U2 22
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1875-9637
J9 AEOLIAN RES
JI Aeolian Res.
PD SEP
PY 2009
VL 1
IS 1-2
BP 9
EP 17
DI 10.1016/j.aeolia.2009.04.002
PG 9
WC Geography, Physical
SC Physical Geography
GA V20CN
UT WOS:000208118200002
ER
PT J
AU Wharton, S
Schroeder, M
Paw, KT
Falk, M
Bible, K
AF Wharton, Sonia
Schroeder, Matt
Paw U, Kyaw Tha
Falk, Matthias
Bible, Ken
TI Turbulence considerations for comparing ecosystem exchange over
old-growth and clear-cut stands for limited fetch and complex canopy
flow conditions
SO AGRICULTURAL AND FOREST METEOROLOGY
LA English
DT Article
DE Old-growth; Clear-cut; Douglas-fir; Ecosystem exchange; Fetch; Footprint
modeling; Turbulence statistics
ID LEAF-AREA INDEX; ENERGY-BALANCE CLOSURE; CARBON-DIOXIDE FLUXES;
WATER-VAPOR EXCHANGE; DOUGLAS-FIR FOREST; PACIFIC-NORTHWEST;
EDDY-COVARIANCE; PONDEROSA PINE; SEASONAL-VARIATION; FLUXNET SITES
AB Carbon dioxide, water vapor, and energy fluxes were measured using eddy covariance (EC) methodology over three adjacent evergreen forests in southern Washington State to identify stand-level age-effects on ecosystem exchange. The sites represent Douglas-fir forest ecosystems at two contrasting successional stages: old-growth (OG) and early seral (ES). Here we present eddy flux and meteorological data from two early seral stands and the Wind River AmeriFlux old-growth forest during the growing season (March-October) in 2006 and 2007. We show an alternative approach to the usual friction velocity (u(*)) method for determining periods of adequate atmospheric boundary layer mixing based on the ratio of mean horizontal (U) or vertical ((w) over bar) wind flow to a modified turbulent kinetic energy scale (U-TKE). This new parameter in addition to footprint modeling showed that daytime CO2 fluxes (F-NEE) in small clear-cuts (<10 ha) can be measured accurately with EC if micrometeorological conditions are carefully evaluated.
Peak midday CO2 fluxes (F-NEE = -14.0 to -12.3 mu mol m(-2) s(-1)) at OG were measured in April in both 2006 and 2007 before bud break when air and soil temperatures and vapor pressure deficit were relatively low, and soil moisture and light levels were favorable for photosynthesis. At the early seral stands, peak midday CO2 fluxes (F-NEE = -11.0 to -8.7 mu mol m(-2) s(-1))were measured in June and July while spring-time CO2 fluxes were much smaller (F-NEE = -3.8 to -3.6 mu mol m(-2) s(-1)). Overall, we measured lower evapotranspiration (OG = 230 mm, ES = 297 mm), higher midday F-NEE (OG F-NEE = -9.0 mu mol m(-2) s(-1), ES F-NEE = -7.3 mu mol m(-2) s(-1)) and higher Bowen ratios (OG beta = 2.0, ES beta = 1.2) at the old-growth forest than at the ES sites during the summer months (May-August). Eddy covariance studies such as ours add critical land-atmosphere exchange data for an abundant, but rarely studied Douglas-fir age class. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Schroeder, Matt; Bible, Ken] Univ Washington, Coll Forest Resources, Seattle, WA 98195 USA.
[Falk, Matthias] Univ Calif Davis, Dept Land Air & Water Resources, Davis, CA 95616 USA.
RP Wharton, S (reprint author), Lawrence Livermore Natl Lab, Atmospher Earth & Energy Div, POB 808,L-103, Livermore, CA 94551 USA.
EM wharton4@llnl.gov
FU Office of Science (BER), US Department of Energy, through the Western
Regional Center of the National Institute for Global Environmental
Change [DE-FC03-90ER61010]; Jastro Shields Graduate Research
Scholarship; U.S. Department of Energy, National Nuclear Security
Administration [DE-AC52-07NA27344]
FX SW would like to thank Mark Creighton and Annie Hamilton at the Wind
River Canopy Crane Facility for their hospitality and assistance
throughout this project. The authors also thank Drs. Dennis Baldocchi
(UC Berkeley), Julie Lundquist (LLNL) and Susan Ustin (UC Davis) for
their technical advice and help in the preparation of this manuscript.
In addition, gratitude goes to the two anonymous reviewers whose
comments were critical for improving this paper. This research was
supported by the Office of Science (BER), US Department of Energy,
through the Western Regional Center of the National Institute for Global
Environmental Change (Cooperative Agreement NO. DE-FC03-90ER61010), and
the Jastro Shields Graduate Research Scholarship (UC Davis). Any
opinions, findings and conclusions or recommendations expressed herein
are those of the authors and do not necessarily reflect the view of the
DOE. The Wind River Canopy Crane Research Facility is operated under
joint sponsorship of the University of Washington and the USDA Forest
Service/PNW Station and we acknowledge both for significant support.
Lawrence Livermore National Laboratory is operated by Lawrence Livermore
National Security, LLC, for the U.S. Department of Energy, National
Nuclear Security Administration under Contract DE-AC52-07NA27344.
NR 64
TC 9
Z9 9
U1 3
U2 21
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-1923
J9 AGR FOREST METEOROL
JI Agric. For. Meteorol.
PD SEP 1
PY 2009
VL 149
IS 9
BP 1477
EP 1490
DI 10.1016/j.agrformet.2009.04.002
PG 14
WC Agronomy; Forestry; Meteorology & Atmospheric Sciences
SC Agriculture; Forestry; Meteorology & Atmospheric Sciences
GA 465YI
UT WOS:000267626300009
ER
PT J
AU Moore, DS
Goodpaster, JV
AF Moore, David S.
Goodpaster, John V.
TI Explosives analysis
SO ANALYTICAL AND BIOANALYTICAL CHEMISTRY
LA English
DT Editorial Material
C1 [Moore, David S.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Goodpaster, John V.] Indiana Univ Purdue Univ, Dept Chem & Chem Biol, Forens & Invest Sci Program, Indianapolis, IN 46202 USA.
RP Moore, DS (reprint author), Los Alamos Natl Lab, DE-9,MS-P952, Los Alamos, NM 87545 USA.
EM moored@lanl.gov; jvgoodpa@iupui.edu
RI Moore, David/C-8692-2013
NR 6
TC 9
Z9 10
U1 0
U2 4
PU SPRINGER HEIDELBERG
PI HEIDELBERG
PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
SN 1618-2642
J9 ANAL BIOANAL CHEM
JI Anal. Bioanal. Chem.
PD SEP
PY 2009
VL 395
IS 2
BP 245
EP 246
DI 10.1007/s00216-009-3003-6
PG 2
WC Biochemical Research Methods; Chemistry, Analytical
SC Biochemistry & Molecular Biology; Chemistry
GA 483XL
UT WOS:000269006500001
PM 19652958
ER
PT J
AU Whitley, VH
Hooks, DE
Ramos, KJ
O'Hara, JF
Azad, AK
Taylor, AJ
Barber, J
Averitt, RD
AF Whitley, V. H.
Hooks, D. E.
Ramos, K. J.
O'Hara, J. F.
Azad, A. K.
Taylor, A. J.
Barber, J.
Averitt, R. D.
TI Polarization orientation dependence of the far infrared spectra of
oriented single crystals of 1,3,5-trinitro-S-triazine (RDX) using
terahertz time-domain spectroscopy
SO ANALYTICAL AND BIOANALYTICAL CHEMISTRY
LA English
DT Article
DE IR spectroscopy/Raman spectroscopy; Organic compounds/trace organic
compounds; Spectroscopy/instrumentation
ID SECURITY APPLICATIONS; THEORETICAL-ANALYSIS; EXPLOSIVES; PETN;
TECHNOLOGY; HMX; THZ; REFINEMENT; INSPECTION; SOLIDS
AB The far infrared spectra of (100), (010), and (001)-oriented RDX single crystals were measured as the crystal was rotated about the axis perpendicular to the polarization plane of the incident radiation. Absorption measurements were taken at temperatures of both 20 K and 295 K for all rotations using terahertz time-domain spectroscopy. A number of discrete absorptions were found ranging from 10-100 cm(-1) (0.3-3 THz). The absorptions are highly dependent on the orientation of the terahertz polarization with respect to crystallographic axes.
C1 [Whitley, V. H.; Hooks, D. E.; Ramos, K. J.] Los Alamos Natl Lab, DE Div, Los Alamos, NM 87545 USA.
[O'Hara, J. F.; Azad, A. K.; Taylor, A. J.] Los Alamos Natl Lab, MPA CINT, Los Alamos, NM 87545 USA.
[Barber, J.] Battelle Mem Inst, Egg Harbor Twp, NJ 08234 USA.
[Averitt, R. D.] Boston Univ, Dept Phys, Boston, MA 02215 USA.
RP Whitley, VH (reprint author), Los Alamos Natl Lab, DE Div, POB 1663, Los Alamos, NM 87545 USA.
EM vwhitley@lanl.gov
OI Azad, Abul/0000-0002-7784-7432
FU U. S. Department of Energy [DE-AC52-06NA25396]; Department of Homeland
Security [DTFACT-03-C-00042]
FX The authors wish to thank Frank Abeyta for sample holder design and
fabrication. This work was supported in part by the Office of Naval
Research and was performed at Los Alamos National Laboratory, operated
by Los Alamos National Security, LLC, for the National Nuclear Security
Administration of the U. S. Department of Energy under contract
DE-AC52-06NA25396. Jeffrey Barber was supported in part by the
Department of Homeland Security under contract DTFACT-03-C-00042.
NR 35
TC 10
Z9 10
U1 0
U2 11
PU SPRINGER HEIDELBERG
PI HEIDELBERG
PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
SN 1618-2642
J9 ANAL BIOANAL CHEM
JI Anal. Bioanal. Chem.
PD SEP
PY 2009
VL 395
IS 2
BP 315
EP 322
DI 10.1007/s00216-009-2741-9
PG 8
WC Biochemical Research Methods; Chemistry, Analytical
SC Biochemistry & Molecular Biology; Chemistry
GA 483XL
UT WOS:000269006500007
PM 19330320
ER
PT J
AU Blake, TA
Kelly, JF
Gallagher, NB
Gassman, PL
Johnson, TJ
AF Blake, Thomas A.
Kelly, James F.
Gallagher, Neal B.
Gassman, Paul L.
Johnson, Timothy J.
TI Passive standoff detection of RDX residues on metal surfaces via
infrared hyperspectral imaging
SO ANALYTICAL AND BIOANALYTICAL CHEMISTRY
LA English
DT Article
DE Standoff detection; Infrared hyperspectral imaging; RDX; HMX; TNT;
Anomaly detection; Target detection; Principal component analysis;
Maximum autocorrelation factors; Principal autocorrelation factors;
Generalized least squares
ID EXPLOSIVES DETECTION; IDENTIFICATION; SPECTROSCOPY
AB Hyperspectral images of galvanized steel plates, each containing a stain of cyclotrimethylenetrinitramine (RDX), were recorded using a commercial long-wave infrared imaging spectrometer. Demonstrations of passive RDX chemical detection at areal dosages between 16 and 90 A mu g/cm(2) were carried out over practical standoff ranges between 14 and 50 m. Anomaly and target detection algorithms were applied to the images to determine the effect of areal dosage and sensing distance on detection performance for target RDX. The anomaly detection algorithms included principal component analysis, maximum autocorrelation factors, and principal autocorrelation factors. Maximum difference factors and principal difference factors are novel multivariate edge detection techniques that were examined for their utility in detection of the RDX stains in the images. A target detection algorithm based on generalized least squares was applied to the images, as well, to see if the algorithm can identify the compound in the stains on the plates using laboratory reflection spectra of RDX, cyclotetramethylenetetranitramine (HMX), and 2,4,6-trinitrotoluene (TNT) as the target spectra. The algorithm could easily distinguish between the nitroaromatic (TNT) compound and the nitramine (RDX, HMX) compounds, and, though the distinction between RDX and HMX was less clear, the mean weighted residuals identified RDX as the stain on the plate. Improvements that can be made in this detection technique are discussed in detail. As expected, it was found that detection was best for short distances and higher areal dosages. However, the target was easily detected at all distances and areal dosages used in this study.
C1 [Blake, Thomas A.; Kelly, James F.; Gassman, Paul L.; Johnson, Timothy J.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Gallagher, Neal B.] Eigenvector Res Inc, Manson, WA 98831 USA.
RP Blake, TA (reprint author), Pacific NW Natl Lab, Mail Stop K8-88,POB 999, Richland, WA 99352 USA.
EM ta.blake@pnl.gov
FU US Department of Energy [AC05-76RL0 1830]
FX The experimental research described here was performed at the Pacific
Northwest National Laboratory (PNNL), which is operated for the US
Department of Energy by the Battelle Memorial Institute under contract
number AC05-76RL0 1830. This research was supported by PNNL's
Laboratory-Directed Research and Development, Initiative for Explosives
Detection portfolio. The authors would like to thank the Initiative's
director Dr. David A. Atkinson for his interest and support of this work
and Dr. John Hartman for his comments on the manuscript.
NR 29
TC 30
Z9 31
U1 0
U2 24
PU SPRINGER HEIDELBERG
PI HEIDELBERG
PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
SN 1618-2642
J9 ANAL BIOANAL CHEM
JI Anal. Bioanal. Chem.
PD SEP
PY 2009
VL 395
IS 2
BP 337
EP 348
DI 10.1007/s00216-009-2907-5
PG 12
WC Biochemical Research Methods; Chemistry, Analytical
SC Biochemistry & Molecular Biology; Chemistry
GA 483XL
UT WOS:000269006500009
PM 19597803
ER
PT J
AU Johnson, TJ
Sams, RL
Burton, SD
Blake, TA
AF Johnson, Timothy J.
Sams, Robert L.
Burton, Sarah D.
Blake, Thomas A.
TI Absolute integrated intensities of vapor-phase hydrogen peroxide
(H(2)O(2)) in the mid-infrared at atmospheric pressure
SO ANALYTICAL AND BIOANALYTICAL CHEMISTRY
LA English
DT Article
DE Infrared; Fourier transform infrared; Quantitative; Band strengths;
Hydrogen peroxide
ID ABSORPTION-SPECTROSCOPY; INFRARED-SPECTRUM; LINE STRENGTHS; BAND; LASER;
OVERTONE; SPECTROMETER; FORMALDEHYDE; PROTOTYPE; IR
AB We report quantitative infrared spectra of vapor-phase hydrogen peroxide (H(2)O(2)) with all spectra pressure-broadened to atmospheric pressure. The data were generated by injecting a concentrated solution (83%) of H(2)O(2) into a gently heated disseminator and diluting it with pure N(2) carrier gas. The water vapor lines were quantitatively subtracted from the resulting spectra to yield the spectrum of pure H(2)O(2). The results for the nu(6) band strength ( including hot bands) compare favorably with the results of Klee et al. (J Mol. Spectrosc. 195: 154, 1999) as well as with the HITRAN values. The present results are 433 and 467 cm(-2) atm(-1) (+/- 8 and +/- 3% as measured at 298 and 323 K, respectively, and reduced to 296 K) for the band strength, matching well the value reported by Klee et al. (S=467 cm(-2) atm(-1) at 296 K) for the integrated band. The nu(1)+nu(5) nearinfrared band between 6,900 and 7,200 cm(-1) has an integrated intensity S=26.3 cm(-2)atm(-1), larger than previously reported values. Other infrared and near-infrared bands and their potential for atmospheric monitoring are discussed.
C1 [Johnson, Timothy J.; Sams, Robert L.; Burton, Sarah D.; Blake, Thomas A.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Johnson, TJ (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99352 USA.
EM timothy.johnson@pnl.gov
FU Strategic Environmental Research and Development Program (SERDP); DOE
[NA-22]
FX We thank Jean-Michel Regimbal of John Abbott College in
Sainte-Anne-de-Bellevue in Montreal for helpful advice. PNNL is operated
for the US Department of Energy by the Battelle Memorial Institute under
contract DE-AC06-76RLO 1830. This work was supported by the Strategic
Environmental Research and Development Program (SERDP) sustainable
infrastructure program. The work was also supported by the DOE NA-22
program and we thank both sponsors for their support. The experiments
were performed at the W. R. Wiley Environmental Molecular Sciences
Laboratory, a national scientific user facility sponsored by DOE's
Office of Biological and Environmental Research and located at PNNL.
NR 48
TC 20
Z9 20
U1 2
U2 17
PU SPRINGER HEIDELBERG
PI HEIDELBERG
PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
SN 1618-2642
J9 ANAL BIOANAL CHEM
JI Anal. Bioanal. Chem.
PD SEP
PY 2009
VL 395
IS 2
BP 377
EP 386
DI 10.1007/s00216-009-2805-x
PG 10
WC Biochemical Research Methods; Chemistry, Analytical
SC Biochemistry & Molecular Biology; Chemistry
GA 483XL
UT WOS:000269006500013
PM 19434399
ER
PT J
AU Babis, JS
Sperline, RP
Knight, AK
Jones, DA
Gresham, CA
Denton, MB
AF Babis, J. S.
Sperline, R. P.
Knight, A. K.
Jones, D. A.
Gresham, C. A.
Denton, M. B.
TI Performance evaluation of a miniature ion mobility spectrometer drift
cell for application in hand-held explosives detection ion mobility
spectrometers
SO ANALYTICAL AND BIOANALYTICAL CHEMISTRY
LA English
DT Article
DE Miniature IMS; Explosives; Capacitive-transimpedance amplifier; CTIA
ID INDUCTIVELY-COUPLED PLASMA; GEOMETRY MASS SPECTROGRAPH; ARRAY
AB The implementation of hand-held ion mobility spectrometers (IMS) requires the development and evaluation of miniature drift cells providing high sensitivity while maintaining reasonable resolution. This manuscript describes the construction of a miniature IMS designed for such an application and its characterization by evaluation of the detection limits and resolution of the system with seven explosive compounds including trinitrotoluene (TNT), cyclotrimethylenetrinitramine (RDX), pentaerythritol tetranitrate (PETN), 2,4,6-trinitrophenyl-N-methylnitramine (Tetryl), nitroglycerin (NG), 2,4-dinitrotoluene(2,4 DNT), and 2,6-dinitrotoluene (2,6 DNT).
C1 [Babis, J. S.; Sperline, R. P.; Knight, A. K.; Denton, M. B.] Univ Arizona, Tucson, AZ 85721 USA.
[Jones, D. A.; Gresham, C. A.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Denton, MB (reprint author), Univ Arizona, Tucson, AZ 85721 USA.
EM mbdenton@email.arizona.edu
FU Department of Energy [A0334-30141, A0344677767]; Gene Atlas and Kim
Johnson of Imager Laboratories
FX The authors would like to acknowledge Gene Atlas and Kim Johnson of
Imager Laboratories for turning concepts into functional devices, and
the Department of Energy, Subcontracts A0334-30141 and A0344677767, for
support of this work. Sandia is a multiprogram laboratory operated by
Sandia Corporation, a Lockheed Martin Company, for the United States
Department of Energy's National Nuclear Security Administration under
contract DE-AC04-94AL85000.
NR 18
TC 22
Z9 22
U1 1
U2 18
PU SPRINGER HEIDELBERG
PI HEIDELBERG
PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
SN 1618-2642
J9 ANAL BIOANAL CHEM
JI Anal. Bioanal. Chem.
PD SEP
PY 2009
VL 395
IS 2
BP 411
EP 419
DI 10.1007/s00216-009-2818-5
PG 9
WC Biochemical Research Methods; Chemistry, Analytical
SC Biochemistry & Molecular Biology; Chemistry
GA 483XL
UT WOS:000269006500017
PM 19424683
ER
PT J
AU Brady, CI
Mack, NH
Brown, LO
Doorn, SK
AF Brady, Christina I.
Mack, Nathan H.
Brown, Leif O.
Doorn, Stephen K.
TI Self-Assembly Approach to Multiplexed Surface-Enhanced Raman
Spectral-Encoder Beads
SO ANALYTICAL CHEMISTRY
LA English
DT Article
ID ORGANIC-INORGANIC NANOPARTICLES; SCATTERING; IMMUNOASSAY; SERS; SILVER;
LABELS; CELLS; PROBE; DNA; NANOSENSORS
AB We present a strategy for the synthesis of multiplexed spectral encoder beads based on combinations of different surface enhanced Raman (SERS) signatures generated by dye-functionalized Ag nanoparticle tags. A key problem in SERS-based multiplexing arises in balancing the competitive binding of different signal generating dyes to the nanoparticle surfaces, which leads to difficulty in generating final summation spectra by design. We avoid this complication by decoupling the formation of individual tags from multiplexing of their spectra by self-assembly of different tag combinations onto SiO(2) microbead supports via biotin-avidin binding. Linear combinations of individual nanoparticle tag spectra are generated in precursor solutions and Eire found to directly translate to the final encoder bead fingerprint spectrum in a 1:1 binding stoichiometry that preserves the original solution ratios. The result is an ability to multiplex spectral signatures in both frequency and intensity space to generate a large number of unique encoder signatures from a limited number of initial tag spectra. Raman microscopy of 75 individual beads shows that spectral response is highly uniform from bead-to-bead, making the encoder assemblies suitable for highly multiplexed bioassay applications and as model systems for cellular surface labeling studies for imaging and immunoassays.
C1 [Brady, Christina I.; Mack, Nathan H.; Brown, Leif O.; Doorn, Stephen K.] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA.
RP Doorn, SK (reprint author), Los Alamos Natl Lab, Div Chem, POB 1663, Los Alamos, NM 87545 USA.
EM skdoorn@lanl.gov
FU LANL LDRD; SULI Fellowship
FX This work was supported by the LANL LDRD program C.I.B. gratefully
acknowledges the additional support of a DOE-sponsored SULI Fellowship.
We thank Greg Goddard for assistance in performing the FITC assay for
bound avidin.
NR 29
TC 22
Z9 22
U1 5
U2 32
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0003-2700
J9 ANAL CHEM
JI Anal. Chem.
PD SEP 1
PY 2009
VL 81
IS 17
BP 7181
EP 7188
DI 10.1021/ac900619h
PG 8
WC Chemistry, Analytical
SC Chemistry
GA 487XP
UT WOS:000269312000011
PM 19670884
ER
PT J
AU Hu, QC
Wang, P
Gassman, PL
Laskin, J
AF Hu, Qichi
Wang, Peng
Gassman, Paul L.
Laskin, Julia
TI In situ Studies of Soft- and Reactive Landing of Mass-Selected Ions
Using Infrared Reflection Absorption Spectroscopy
SO ANALYTICAL CHEMISTRY
LA English
DT Article
ID ASSEMBLED MONOLAYER SURFACES; TREATED METAL-SURFACE; THIN-FILM GROWTH;
PEPTIDE IONS; COVALENT IMMOBILIZATION; CHEMICAL-MODIFICATION; POLYATOMIC
IONS; ELECTROSPRAY-IONIZATION; ION/SURFACE REACTIONS;
DESORPTION-KINETICS
AB Grazing incidence infrared reflection absorption spectroscopy (IRRAS) for in situ and in real time characterization of substrates modified by soft and reactive landing (SL and RL) of complex ions was implemented on a mass-selected ion deposition instrument. Ions produced by electrospray ionization were mass-selected using a quadrupole mass filter and deposited onto inert and reactive self-assembled monolayer (SAM) surfaces. Surface composition during and after ion deposition was monitored using IRRAS. Physisorption of a cyclic peptide, Gramicidin S (GS), was studied for 8 h during deposition and additional 12 h after the end of deposition. The integrated signal of the characteristic amide bands followed a linear increase during the deposition and stayed unchanged after the deposition was finished. Similar linear increase in IRRAS signal was obtained following reactive deposition of the protonated dodecanediamine onto SAMs of dithiobis (succinimidyl undecanoate) (NHS-SAM) and 16-mercaptohexadecanoic acid fluoride (COF-SAM) on gold. IRRAS allowed us to monitor for the first time the formation of the amide bond between reactive SAM surfaces and the projectile molecule.
C1 [Hu, Qichi; Wang, Peng; Gassman, Paul L.; Laskin, Julia] Pacific NW Natl Lab, Div Chem & Mat Sci, Richland, WA 99352 USA.
RP Laskin, J (reprint author), Pacific NW Natl Lab, Div Chem & Mat Sci, Richland, WA 99352 USA.
EM Julia.Laskin@pnl.gov
RI Laskin, Julia/H-9974-2012
OI Laskin, Julia/0000-0002-4533-9644
FU Chemical Sciences Division, Office of Basic Energy Sciences of the U.S.
Department of Energy (DOE)
FX This work was supported by the grant from the Chemical Sciences
Division, Office of Basic Energy Sciences of the U.S. Department of
Energy (DOE). The work was performed at the W. R. Wiley Environmental
Molecular Sciences Laboratory (EMSL), a national scientific user
facility sponsored by the U.S. DOE's Office of Biological and
Environmental Research and located at the Pacific Northwest National
Laboratory (PNNL), PNNL is operated by Battelle for the U.S. DOE. We
thank Zillua Zhu (EMSL) for technical assistance and helpful discussion.
NR 63
TC 29
Z9 29
U1 4
U2 17
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0003-2700
J9 ANAL CHEM
JI Anal. Chem.
PD SEP 1
PY 2009
VL 81
IS 17
BP 7302
EP 7308
DI 10.1021/ac901149s
PG 7
WC Chemistry, Analytical
SC Chemistry
GA 487XP
UT WOS:000269312000026
PM 19715361
ER
PT J
AU Nischang, I
Svec, F
Frechet, JMJ
AF Nischang, Ivo
Svec, Frantisek
Frechet, Jean M. J.
TI Downscaling Limits and Confinement Effects in the Miniaturization of
Porous Polymer Monoliths in Narrow Bore Capillaries
SO ANALYTICAL CHEMISTRY
LA English
DT Article
ID PERFORMANCE LIQUID-CHROMATOGRAPHY; OPENING METATHESIS POLYMERIZATION;
IONIZATION MASS-SPECTROMETRY; CO-ETHYLENE DIMETHACRYLATE); STATIONARY
PHASES; PROTEOMIC ANALYSIS; MU-M; MACROPOROUS POLYMER; SEPARATION MEDIA;
INNER DIAMETERS
AB Monolithic poly(butyl methacrylate-co-ethylene dimethacrylate) columns have been prepared in capillaries ranging in inner diameter from 5 to 75 pm using thermally initiated free-radical polymerization of a mixture of butyl methacrylate, ethylene dimethacrylate, and porogens at different temperatures. Scanning electron microscopy and the measurement of hydrodynamic properties reveal that the downward scalability of die monolithic columns is greatly affected by the confinement effect of the capillary wall resulting from the decreased volume-to-surface ratio as the capillary diameter is decreased. The downscaling process is affected most by the polymerization temperature, the diffusion of the propagating radicals, and the density of coverage of polymerizable groups on the inner walls of the capillary. Optimization of all these factors enables the preparation of monolithic structures in capillaries with inner diameters as low as 5 pm while retaining the desirable properties of monoliths prepared in much larger capillaries. Under these conditions, formation of undesired dense polymer layers attached to the capillary wall was minimized. The chromatographic performance of 10, 25, and 50 pm capillaries evaluated in the reversed phase gradient separation of three proteins showed no change in elution times at identical flow velocities and gradient times, while peak elution width was the smallest with the narrowest capillary.
C1 [Svec, Frantisek; Frechet, Jean M. J.] EO Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Nischang, Ivo; Frechet, Jean M. J.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
RP Svec, F (reprint author), EO Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
EM fsvec@lbl.gov; frechet@berkeley.edu
RI Nischang, Ivo/B-8619-2013;
OI Frechet, Jean /0000-0001-6419-0163
FU National Institute Institutes of Health [GM48364]; Office of Science,
Office of Basic Energy Sciences, U.S. Department of Energy
[DE-AC02-05CH11231]
FX Support of this research by a grant of the National Institute Institutes
of Health (GM48364) is gratefully acknowledged. Portions of this work
were performed at the Molecular Foundry, Lawrence Berkeley National
Laboratory, supported by the Office of Science, Office of Basic Energy
Sciences, U.S. Department of Energy, under Contract No.
DE-AC02-05CH11231.
NR 46
TC 38
Z9 38
U1 1
U2 49
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0003-2700
EI 1520-6882
J9 ANAL CHEM
JI Anal. Chem.
PD SEP 1
PY 2009
VL 81
IS 17
BP 7390
EP 7396
DI 10.1021/ac901162x
PG 7
WC Chemistry, Analytical
SC Chemistry
GA 487XP
UT WOS:000269312000039
PM 19642657
ER
PT J
AU Bu, XB
Chen, HP
Gai, HW
Yang, RH
Yeung, ES
AF Bu, Xiaobing
Chen, Huaping
Gai, Hongwei
Yang, Ronghua
Yeung, Edward S.
TI Scattering Imaging of Single Quantum Dots with Dark-Field Microscopy
SO ANALYTICAL CHEMISTRY
LA English
DT Article
ID LIGHT-SCATTERING; PLASMON RESONANCE; REFRACTIVE-INDEX; FLUORESCENCE;
BLINKING; NANOPARTICLES; SUPPRESSION; INTERMITTENCY; NANOCRYSTALS;
DEPENDENCE
AB Scattering images of single quantum dots (QDs) are obtained with a standard dark-field microscope at a video rate. The counts of QDs under dark-field remained constant while the scattering intensity decreased, providing direct proof of quantum dot photophysical bleaching as opposed to desorption or photodecomposition.
C1 [Bu, Xiaobing; Chen, Huaping; Gai, Hongwei; Yang, Ronghua; Yeung, Edward S.] Hunan Univ, Ctr Biomed Engn, Changsha 410082, Hunan, Peoples R China.
[Gai, Hongwei; Yang, Ronghua] Hunan Univ, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China.
[Yeung, Edward S.] Iowa State Univ, Dept Chem, Ames, IA 50011 USA.
[Yeung, Edward S.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
RP Gai, HW (reprint author), Hunan Univ, Ctr Biomed Engn, Changsha 410082, Hunan, Peoples R China.
EM gaihw@hnu.cn
NR 24
TC 11
Z9 11
U1 0
U2 20
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0003-2700
J9 ANAL CHEM
JI Anal. Chem.
PD SEP 1
PY 2009
VL 81
IS 17
BP 7507
EP 7509
DI 10.1021/ac901410w
PG 3
WC Chemistry, Analytical
SC Chemistry
GA 487XP
UT WOS:000269312000056
PM 19663412
ER
PT J
AU Li, J
Yim, MS
Piet, S
McNelis, D
AF Li, Jun
Yim, Man-Sung
Piet, Steven
McNelis, David
TI Integrated decay heat load method to analyze repository capacity impact
of a fuel cycle
SO ANNALS OF NUCLEAR ENERGY
LA English
DT Article
AB Assessing the needs for repository capacity from nuclear waste disposal is essential for fuel cycle development or repository development planning. As the repository capacity is mainly constrained by thermal design limits on the repository rocks, a detailed mountain-scale heat transfer calculation is needed for repository capacity impact analysis. In this paper, a simplified repository capacity impact analysis method is proposed as an alternative to performing repository scale heat transfer analysis. The method is based on the use of integrated decay heat load (IDHL) limits. The derived integrated decay heat loads were found to appropriately represent the drift wall temperature limit (200 degrees C) and the midway between adjacent drifts temperature limit (96 degrees C) under the high temperature operating mode as long as the wastes are uniformly loaded into the repository. Results indicated that the long-term integrated decay heat load (IDHL(L)) and the short-term integrated decay heat load (IDHL(S)) can be effectively used to represent the repository capacity impact for SNFs and HLWs, respectively. Comparisons indicated good agreement between the proposed IDHL method and the repository heat transfer analysis-based approach. Published by Elsevier Ltd.
C1 [Li, Jun; Yim, Man-Sung; McNelis, David] N Carolina State Univ, Dept Nucl Engn, Raleigh, NC 27695 USA.
[Piet, Steven] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
RP Li, J (reprint author), N Carolina State Univ, Dept Nucl Engn, Campus Box 7909, Raleigh, NC 27695 USA.
EM junli@unc.edu
RI Yim, Man-Sung/G-2720-2011
FU Russell Family Foundation
FX The authors would like to acknowledge the support for this research
provided by the Russell Family Foundation.
NR 12
TC 1
Z9 1
U1 0
U2 1
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0306-4549
J9 ANN NUCL ENERGY
JI Ann. Nucl. Energy
PD SEP
PY 2009
VL 36
IS 9
BP 1366
EP 1373
DI 10.1016/j.anucene.2009.06.015
PG 8
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 504UY
UT WOS:000270644500010
ER
PT J
AU Constantinescu, EM
AF Constantinescu, Emil M.
TI On the order of general linear methods
SO APPLIED MATHEMATICS LETTERS
LA English
DT Article
DE General linear methods; Order conditions; Ordinary differential
equations
AB General linear (GL) methods are numerical algorithms used to solve ODEs. The standard order conditions analysis involves the GL matrix itself and a starting procedure; however, a finishing method (F) is required to extract the actual ODE solution. The standard order analysis and stability are sufficient for the convergence of any GL method. Nonetheless, using a simple GL scheme, we show that the order definition may be too restrictive. Specifically, the order for GL methods with low order intermediate components may be underestimated. In this note we explore the order conditions for GL schemes and propose a new definition for characterizing the order of GL methods, which is focused on the final result - the outcome of F - and can provide more effective algebraic order conditions. (C) 2009 Elsevier Ltd. All rights reserved.
C1 Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA.
RP Constantinescu, EM (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM emconsta@mcs.anl.gov
FU Office of Advanced Scientific Computing Research, Office of Science, US
Department of Energy [DE-AC02-06CH11357]
FX We would like to thank the anonymous reviewer for helpful suggestions
and careful remarks. This work was supported by the Office of Advanced
Scientific Computing Research, Office of Science, US Department of
Energy, under Contract DE-AC02-06CH11357.
NR 6
TC 2
Z9 2
U1 0
U2 0
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0893-9659
J9 APPL MATH LETT
JI Appl. Math. Lett.
PD SEP
PY 2009
VL 22
IS 9
BP 1425
EP 1428
DI 10.1016/j.aml.2008.12.005
PG 4
WC Mathematics, Applied
SC Mathematics
GA 470GW
UT WOS:000267964200022
ER
PT J
AU Kulatilaka, WD
Frank, JH
Patterson, BD
Settersten, TB
AF Kulatilaka, W. D.
Frank, J. H.
Patterson, B. D.
Settersten, T. B.
TI Analysis of 205-nm photolytic production of atomic hydrogen in methane
flames
SO APPLIED PHYSICS B-LASERS AND OPTICS
LA English
DT Article
ID LASER-INDUCED FLUORESCENCE; ABSORPTION CROSS-SECTIONS; PHOTODISSOCIATION
DYNAMICS; PICOSECOND EXCITATION; UV ABSORPTION; 193.3 NM; FLAT FLAMES;
ACETYLENE; METHYL; STATE
AB We investigate the 205-nm photolytic production of atomic hydrogen in methane flames. This process represents a significant interference in two-photon, laser induced-fluorescence (TP-LIF) detection of atomic hydrogen in flames. Relative TP-LIF profiles of the photolytically produced H atoms were measured using a pump-probe technique in atmospheric-pressure, premixed CH(4)/O(2)/N(2) flames. A high-fluence, non-resonant, nanosecond pump laser created H atoms by photodissociating flame constituents, and a copropagating, non-perturbing picosecond laser probed the photolytically produced Hatoms via TP-LIF. Spatial profiles of photolytically produced H atoms indicate that both intermediate and product species contribute to the interference in all flames. Excellent agreement between simulated and measured interference signals is observed in the product region of the flames. Vibrationally excited H(2)O is the dominant source of interference in the product region, but an additional contribution is attributed to vibrationally excited OH radicals. In the flame-front region, CH(3) is the dominant precursor, and photodissociation of C(2)H(2) becomes increasingly important in rich flames. Mechanisms for sequential photodissociation of CH(3) and C(2)H(2) are presented, indicating that complete dissociation at 205 nm of both precursors is feasible.
C1 [Kulatilaka, W. D.; Frank, J. H.; Patterson, B. D.; Settersten, T. B.] Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA.
RP Settersten, TB (reprint author), Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA.
EM tbsette@sandia.gov
RI Settersten, Thomas/B-3480-2009
OI Settersten, Thomas/0000-0002-8017-0258
FU US Department of Energy's National Nuclear Security Administration [DE-
AC04- 94AL85000]
FX The authors would like to thank Dr. Gerrit C. Groenenboom for providing
OH photodissociation cross sections, Dr. Jeffrey J. Kay for providing
two- photon absorption line positions for H2, and Dr. David L. Osborn
for providing Franck - Condon calculations for C2H2 and other useful
insights. Funding for this research was provided by the US Department of
Energy, Office of Basic Energy Sciences, Division of Chemical Sciences,
Geosciences, and Biosciences. Sandia is a multiprogram laboratory
operated by Sandia Corporation, a Lockheed Martin Company, for the US
Department of Energy's National Nuclear Security Administration under
contract DE- AC04- 94AL85000.
NR 74
TC 12
Z9 12
U1 3
U2 19
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0946-2171
J9 APPL PHYS B-LASERS O
JI Appl. Phys. B-Lasers Opt.
PD SEP
PY 2009
VL 97
IS 1
BP 227
EP 242
DI 10.1007/s00340-009-3474-3
PG 16
WC Optics; Physics, Applied
SC Optics; Physics
GA 494US
UT WOS:000269844700029
ER
PT J
AU Goulay, F
Schrader, PE
Michelsen, HA
AF Goulay, F.
Schrader, P. E.
Michelsen, H. A.
TI The effects of pulsed laser injection seeding and triggering on the
temporal behavior and magnitude of laser-induced incandescence from soot
SO APPLIED PHYSICS B-LASERS AND OPTICS
LA English
DT Article
ID PARTICLE-SIZE MEASUREMENTS; FLAME-GENERATED SOOT; VOLUME FRACTION;
DIFFUSION FLAME; LII; DIAGNOSTICS; PRESSURES; TEMPERATURE; EXCITATION;
EMISSION
AB The effect of sub-nanosecond fluence fluctuations and triggering on time-resolved laser-induced incandescence (LII) from soot has been studied using an injection-seeded pulsed Nd:YAG laser that produces a smooth laser temporal profile. Without injection seeding, this multi-mode laser generates pulses with large intensity fluctuations with sub-nanosecond rise times. The experimental results described here demonstrate that at fluences below 0.6 J/cm(2) LII signals are insensitive to fluence fluctuations on nanosecond time scales. At fluences above 0.6 J/cm(2) fluctuations in the laser profile cause the rising edge of the LII profile to move around in time relative to the center of the laser pulse causing a broader average profile that shifts to earlier times. Such fluctuations also lead to a decrease in the average LII temporal profile by up to 12% at a fluence of 3.5 J/cm(2). A timing jitter on the trigger of the data acquisition, such as that produced by triggering on the laser Q-switch synchronization pulse, has a negligible effect on the shape and temporal maximum of the LII signal. Additional jitter, however, considerably reduces the peak of the LII temporal profiles at fluences as low as 0.15 J/cm(2). Neither fast fluence fluctuations nor trigger jitter have a significant effect on gated LII signals, such as those used to infer soot volume fraction.
C1 [Goulay, F.; Schrader, P. E.; Michelsen, H. A.] Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA.
RP Michelsen, HA (reprint author), Sandia Natl Labs, Combust Res Facil, POB 969,MS 9055, Livermore, CA 94551 USA.
EM hamiche@sandia.gov
NR 48
TC 5
Z9 5
U1 0
U2 5
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0946-2171
J9 APPL PHYS B-LASERS O
JI Appl. Phys. B-Lasers Opt.
PD SEP
PY 2009
VL 96
IS 4
BP 613
EP 621
DI 10.1007/s00340-009-3520-1
PG 9
WC Optics; Physics, Applied
SC Optics; Physics
GA 484OD
UT WOS:000269054800005
ER
PT J
AU Burr, T
Myers, K
AF Burr, Tom
Myers, Kary
TI Effects of background suppression of gamma counts on signal estimation
SO APPLIED RADIATION AND ISOTOPES
LA English
DT Article
DE Passive gamma counting; Radiation detection; Illicit nuclear materials;
Background suppression; Clustering; Signal estimation; Detection
probability; Mean squared error
AB Gamma detectors at border crossings are intended to detect illicit nuclear material. One of their performance challenges is the fact that vehicles suppress the natural background and, thus, potentially reduce probability of detection of threat items. Here we test several methods to adjust the detection to background suppression in the context of signal estimation.
We show that. for the small-to-moderate suppression magnitudes, suppression adjustment leads to higher detection probability. However, for signals triggering alarm without an adjustment, adjustment does not improve estimation of the signal location, only moderately improves estimation of the signal magnitude, and does not improve estimation of the signal width. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Burr, Tom; Myers, Kary] Los Alamos Natl Lab, Stat Sci Grp, Los Alamos, NM 87545 USA.
RP Burr, T (reprint author), Los Alamos Natl Lab, Stat Sci Grp, Mail Stop F600, Los Alamos, NM 87545 USA.
EM tburr@lanl.gov
OI Myers, Kary/0000-0002-5642-959X
FU DOE [DE-AC52-06NA25396]; Los Alamos National Laboratory
FX The Department of Homeland Security sponsored the production of this
material under DOE Contract Number DE-AC52-06NA25396 for the management
and operation of Los Alamos National Laboratory.
NR 15
TC 3
Z9 3
U1 0
U2 0
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0969-8043
J9 APPL RADIAT ISOTOPES
JI Appl. Radiat. Isot.
PD SEP
PY 2009
VL 67
IS 9
BP 1729
EP 1737
DI 10.1016/j.apradiso.2009.04.002
PG 9
WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology; Radiology,
Nuclear Medicine & Medical Imaging
SC Chemistry; Nuclear Science & Technology; Radiology, Nuclear Medicine &
Medical Imaging
GA 468VR
UT WOS:000267852900030
PM 19442528
ER
PT J
AU Browne, P
Rice, O
Miller, SH
Burke, J
Dowling, DN
Morrissey, JP
O'Gara, F
AF Browne, Patrick
Rice, Olivia
Miller, Simon H.
Burke, Jimmy
Dowling, David N.
Morrissey, John P.
O'Gara, Fergal
TI Superior inorganic phosphate solubilization is linked to phylogeny
within the Pseudomonas fluorescens complex
SO APPLIED SOIL ECOLOGY
LA English
DT Article
DE Pseudomonas fluorescens; Phosphate solubilization; Sustainable
agriculture
ID RESIDENT SOIL POPULATIONS; FUNCTIONAL DIVERSITY; GROWTH PROMOTION;
BACTERIA; AGRICULTURE; PHOSPHORUS; RHIZOSPHERE; BIOCONTROL; ROOT;
EXPLOITATION
AB Modern agriculture relies on the addition of chemical fertilizers, with little attention paid to the role of soil microbes in biogeochemical cycles. Phosphate fertilization is a particular problem because heavy use leads to groundwater contamination and waterway eutrophication. Sustainable agriculture could be promoted by harnessing soil microbes, in particular fluorescent pseudomonads, to mobilize soil inorganic phosphate and increase bioavailability for plants. In this study, a long term field site was used to assess the effects of conventional or no phosphate addition on the phosphate solubilizing fluorescent pseudomonad community. 752 fluorescent pseudomonad isolates were recovered from the rhizospheres of wheat and barley and classified as strong, weak or non-phosphate solubilizers on the basis of clearing zones formed on medium containing insoluble Ca(3)(PO(4))(2), Surprisingly, no differences in the percentages of strong, weak and non-phosphate solubilizing isolates were observed when comparing isolate collections from the different crop types or different input regimes. Amplified ribosomal DNA restriction analysis (ARDRA) profiling and DNA sequence analysis of the 16S rDNA and gyrB genes was applied to a subset of the isolates to determine whether an effect of fertilizer input could be detected at the taxonomic level. No effect of phosphate fertilizer was seen, but the data did reveal that 82% of the strong-solubilizing isolates were clustered into one taxonomic group that completely lacked non-solubilizing isolates. These findings suggest that one phylogenetic lineage within the A fluorescens complex has superior phosphate solubilizing potential and supports the view that it may be possible to select a Pseudomonas community with an enhanced capacity to mobilize inorganic phosphate in agricultural soils. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Browne, Patrick; Rice, Olivia; Miller, Simon H.; Morrissey, John P.; O'Gara, Fergal] Natl Univ Ireland Univ Coll Cork, Dept Microbiol, BIOMERIT Res Ctr, Cork, Ireland.
[Burke, Jimmy] Oak Pk Res Ctr, TEAGASC, Carlow, Ireland.
[Dowling, David N.] Inst Technol Carlow, Dept Sci & Hlth, Carlow, Ireland.
RP Morrissey, JP (reprint author), Natl Univ Ireland Univ Coll Cork, Dept Microbiol, BIOMERIT Res Ctr, Cork, Ireland.
EM j.morrissey@ucc.ie
RI dowling, david/A-6249-2010;
OI dowling, david/0000-0001-6952-5495; Morrissey, John/0000-0001-7960-2001
FU Science Foundation of Ireland [04/BR/B0597, 07/1N.1/13948,
08/RFP/GEN1295]; Department of Agriculture, Fisheries and Food Research
Stimulus Fund [06-321, 06-377]; Department of Agriculture, Fisheries and
Food FIRM [06RDC459, 06RDC506]; European Commission [FP6 036314]; Marie
Currie TOK:TRAMWAYS; Irish Research Council for Science Engineering and
Technology [05/EDIV/FP107/INTERPAM]; Marine Institute; Health Research
Board [RP/2006/271 and RP/2007/290]; Environmental Protection Agency,
Ireland.
FX This research was supported in part by grants awarded by the Science
Foundation of Ireland (grants 04/BR/B0597, 07/1N.1/13948 and
08/RFP/GEN1295 to FOG), the Department of Agriculture, Fisheries and
Food Research Stimulus Fund (grants 06-321 to FOG, JPM, JB and DND; and
06-377 to FOG and JPM), Department of Agriculture, Fisheries and Food
FIRM (grants 06RDC459 and 06RDC506 to JPM), the European Commission
(grant FP6#036314 and Marie Currie TOK:TRAMWAYS to FOG and JPM), Irish
Research Council for Science Engineering and Technology (grant
05/EDIV/FP107/INTERPAM to FOG and JPM) the Marine Institute (Beaufort
award to FOG and JPM), and the Health Research Board (grants RP/2006/271
and RP/2007/290 to FOG). P.B. is supported by a Doctoral Scholarship
from the Environmental Protection Agency, Ireland. We thank Jennifer
Moynihan for the primers gyrff and gyrBr and Pat Higgins for excellent
technical assistance.
NR 52
TC 38
Z9 39
U1 1
U2 21
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0929-1393
J9 APPL SOIL ECOL
JI Appl. Soil Ecol.
PD SEP
PY 2009
VL 43
IS 1
BP 131
EP 138
DI 10.1016/j.apsoil.2009.06.010
PG 8
WC Soil Science
SC Agriculture
GA 506AT
UT WOS:000270745400016
ER
PT J
AU Crawley, D
Pless, S
Torcellini, P
AF Crawley, Drury
Pless, Shanti
Torcellini, Paul
TI Getting to Net Zero
SO ASHRAE JOURNAL
LA English
DT Article
C1 [Crawley, Drury] US DOE, Commercial Bldg Team, Off Bldg Technol, Washington, DC 20585 USA.
[Pless, Shanti; Torcellini, Paul] Natl Renewable Energy Lab, Commercial Bldg Res Grp, Golden, CO USA.
RP Crawley, D (reprint author), US DOE, Commercial Bldg Team, Off Bldg Technol, Washington, DC 20585 USA.
NR 7
TC 32
Z9 32
U1 0
U2 3
PU AMER SOC HEATING REFRIGERATING AIR-CONDITIONING ENG, INC,
PI ATLANTA
PA 1791 TULLIE CIRCLE NE, ATLANTA, GA 30329 USA
SN 0001-2491
J9 ASHRAE J
JI ASHRAE J.
PD SEP
PY 2009
VL 51
IS 9
BP 18
EP +
PG 6
WC Thermodynamics; Construction & Building Technology; Engineering,
Mechanical
SC Thermodynamics; Construction & Building Technology; Engineering
GA 496UC
UT WOS:000270003500011
ER
PT J
AU Dieckmann, J
Brodrick, J
AF Dieckmann, John
Brodrick, James
TI Mechanical Subcooling What's Easiest Is Not Always Best
SO ASHRAE JOURNAL
LA English
DT Article
C1 [Dieckmann, John] TIAX, Cambridge, MA USA.
[Brodrick, James] US DOE, Bldg Technol Program, Washington, DC USA.
RP Dieckmann, J (reprint author), TIAX, Cambridge, MA USA.
NR 1
TC 1
Z9 1
U1 0
U2 1
PU AMER SOC HEATING REFRIGERATING AIR-CONDITIONING ENG, INC,
PI ATLANTA
PA 1791 TULLIE CIRCLE NE, ATLANTA, GA 30329 USA
SN 0001-2491
J9 ASHRAE J
JI ASHRAE J.
PD SEP
PY 2009
VL 51
IS 9
BP 84
EP +
PG 3
WC Thermodynamics; Construction & Building Technology; Engineering,
Mechanical
SC Thermodynamics; Construction & Building Technology; Engineering
GA 496UC
UT WOS:000270003500017
ER
PT J
AU Starck, JL
Fadili, JM
Digel, S
Zhang, B
Chiang, J
AF Starck, J-L.
Fadili, J. M.
Digel, S.
Zhang, B.
Chiang, J.
TI Source detection using a 3D sparse representation: application to the
Fermi gamma-ray space telescope
SO ASTRONOMY & ASTROPHYSICS
LA English
DT Article
DE methods: data analysis; techniques: image processing
ID POISSON NOISE; WAVELET
AB The multiscale variance stabilization Transform (MSVST) has recently been proposed for Poisson data denoising (Zhang et al. 2008a). This procedure, which is nonparametric, is based on thresholding wavelet coefficients. The restoration algorithm applied after thresholding provides good conservation of source flux. We present in this paper an extension of the MSVST to 3D data-in fact 2D-1D data-when the third dimension is not a spatial dimension, but the wavelength, the energy, or the time. We show that the MSVST can be used for detecting and characterizing astrophysical sources of high-energy gamma rays, using realistic simulated observations with the Large Area Telescope (LAT). The LAT was launched in June 2008 on the Fermi Gamma-ray Space Telescope mission. Source detection in the LAT data is complicated by the low fluxes of point sources relative to the diffuse celestial foreground, the limited angular resolution, and the tremendous variation in that resolution with energy (from tens of degrees at similar to 30 MeV to similar to 0.1 degrees at 10 GeV). The high-energy gamma-ray sky is also quite dynamic, with a large population of sources such active galaxies with accretion-powered black holes producing high-energy jets, episodically flaring. The fluxes of these sources can change by an order of magnitude or more on time scales of hours. Perhaps the majority of blazars will have average fluxes that are too low to be detected but could be found during the hours or days that they are flaring. The MSVST algorithm is very fast relative to traditional likelihood model fitting, and permits efficient detection across the time dimension and immediate estimation of spectral properties. Astrophysical sources of gamma rays, especially active galaxies, are typically quite variable, and our current work may lead to a reliable method to quickly characterize the flaring properties of newly-detected sources.
C1 [Starck, J-L.] Univ Paris Diderot, CNRS, Lab Astrophys Interact Multiechelles, CEA IRFU SEDI SAP,CEA DSM,Ctr Saclay,UMR 7158, F-91191 Gif Sur Yvette, France.
[Fadili, J. M.] CNRS, GREYC, Image Proc Grp, ENSICAEN,UMR 6072, F-14050 Caen, France.
[Digel, S.; Chiang, J.] Stanford Linear Accelerator Ctr, Stanford, CA 94075 USA.
[Digel, S.; Chiang, J.] Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94075 USA.
[Zhang, B.] Inst Pasteur, CNRS, Quantitat Image Anal Unit, URA 2582, F-75724 Paris 15, France.
RP Starck, JL (reprint author), Univ Paris Diderot, CNRS, Lab Astrophys Interact Multiechelles, CEA IRFU SEDI SAP,CEA DSM,Ctr Saclay,UMR 7158, F-91191 Gif Sur Yvette, France.
EM jstarck@cea.fr
RI Starck, Jean-Luc/D-9467-2011
OI Starck, Jean-Luc/0000-0003-2177-7794
FU French National Agency for Research [ANR-08-EMER-009-01]
FX We thank Jean-Marc Casandjian for providing us the simulated data set of
the diffuse emission of the Galaxy and Jeff Scargle for his helpful
comments and critics. This work was partially supported by the French
National Agency for Research (ANR-08-EMER-009-01).
NR 30
TC 17
Z9 17
U1 2
U2 3
PU EDP SCIENCES S A
PI LES ULIS CEDEX A
PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A,
FRANCE
SN 0004-6361
J9 ASTRON ASTROPHYS
JI Astron. Astrophys.
PD SEP
PY 2009
VL 504
IS 2
BP 641
EP 652
DI 10.1051/0004-6361/200811388
PG 12
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 496PD
UT WOS:000269986100032
ER
PT J
AU Rossetti, A
Mantovani, F
Dallacasa, D
Junor, W
Salter, CJ
Saikia, DJ
AF Rossetti, A.
Mantovani, F.
Dallacasa, D.
Junor, W.
Salter, C. J.
Saikia, D. J.
TI VLBA polarimetric observations of the CSS quasar 3C 147
SO ASTRONOMY & ASTROPHYSICS
LA English
DT Article
DE polarization; galaxies: quasars: individual: 3C 147; galaxies: jets;
radio continuum: galaxies
ID STEEP-SPECTRUM SOURCES; EXTRAGALACTIC RADIO-SOURCES; ACTIVE GALACTIC
NUCLEI; SCALE ROTATION-MEASURE; POLARIZATION PROPERTIES; 5 GHZ;
FARADAY-ROTATION; SAMPLE; JET; GALAXIES
AB Aims. We report new VLBA polarimetric observations of the compact steep-spectrum (CSS) quasar 3C 147 (B0538 + 498) at 5 and 8.4 GHz.
Methods. By using multifrequency VLBA observations, we derived milliarcsecond-resolution images of the total intensity, polarisation, and rotation measure distributions, by combining our new observations with archival data.
Results. The source shows a one-sided structure, with a compact region, and a component extending about 200 mas to the south-west. The compact region is resolved into two main components with polarised emission, a complex rotation measure distribution, and a magnetic field dominated by components perpendicular to the source axis.
Conclusions. By considering all the available data, we examine the possible location of the core component, and discuss two possible interpretations of the observed structure of this source: core-jet and lobe-hot spot. Further observations to unambiguously determine the location of the core would help distinguish between the two possibilities discussed here.
C1 [Rossetti, A.; Mantovani, F.; Dallacasa, D.] INAF, Ist Radioastron, I-40129 Bologna, Italy.
[Dallacasa, D.] Univ Bologna, Dipartimento Astron, I-40127 Bologna, Italy.
[Junor, W.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Salter, C. J.] Arecibo Observ, Arecibo, PR 00612 USA.
[Saikia, D. J.] Natl Ctr Astrophys, TIFR, Pune 411007, Maharashtra, India.
RP Rossetti, A (reprint author), INAF, Ist Radioastron, Via Gobetti 101, I-40129 Bologna, Italy.
EM rossetti@ira.inaf.it
FU Associated Universities, Inc
FX The VLBA is operated by the US National Radio Astronomy Observatory
which is a facility of the National Science Foundation operated under a
cooperative agreement by Associated Universities, Inc. We are very
grateful to the referee for very helpful comments and suggestions and
for a careful reading of the manuscript of this paper.
NR 44
TC 6
Z9 6
U1 0
U2 0
PU EDP SCIENCES S A
PI LES ULIS CEDEX A
PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A,
FRANCE
SN 0004-6361
J9 ASTRON ASTROPHYS
JI Astron. Astrophys.
PD SEP
PY 2009
VL 504
IS 3
BP 741
EP 749
DI 10.1051/0004-6361/200811190
PG 9
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 498XZ
UT WOS:000270180600008
ER
PT J
AU Abraham, J
Abreu, P
Aglietta, M
Aguirre, C
Ahn, EJ
Allard, D
Allekotte, I
Allen, J
Allison, P
Alvarez-Muniz, J
Ambrosio, M
Anchordoqui, L
Andringa, S
Anzalone, A
Aramo, C
Arganda, E
Argiro, S
Arisaka, K
Arneodo, F
Arqueros, F
Asch, T
Asorey, H
Assis, P
Aublin, J
Ave, M
Avila, G
Backer, T
Badagnani, D
Barber, KB
Barbosa, AF
Barroso, SLC
Baughman, B
Bauleo, P
Beatty, JJ
Beau, T
Becker, BR
Becker, KH
Belletoile, A
Bellido, JA
BenZvi, S
Berat, C
Bernardini, P
Bertou, X
Biermann, PL
Billoir, P
Blanch-Bigas, O
Blanco, F
Bleve, C
Blumer, H
Bohacova, M
Bonifazi, C
Bonino, R
Borodai, N
Brack, J
Brogueira, P
Brown, WC
Bruijn, R
Buchholz, P
Bueno, A
Burton, RE
Busca, NG
Caballero-Mora, KS
Caramete, L
Caruso, R
Carvalho, W
Castellina, A
Catalano, O
Cazon, L
Cester, R
Chauvin, J
Chiavassa, A
Chinellato, JA
Chou, A
Chudoba, J
Chye, J
Clay, RW
Colombo, E
Conceicao, R
Connolly, B
Contreras, F
Coppens, J
Cordier, A
Cotti, U
Coutu, S
Covault, CE
Creusot, A
Criss, A
Cronin, J
Curutiu, A
Dagoret-Campagne, S
Dallier, R
Daumiller, K
Dawson, BR
de Almeida, RM
De Domenico, M
De Donato, C
de Jong, SJ
De La Vega, G
de Mello, WJM
Neto, JRTD
De Mitri, I
de Souza, V
de Vries, KD
Decerprit, G
del Peral, L
Deligny, O
Della Selva, A
Delle Fratte, C
Dembinski, H
Di Giulio, C
Diaz, JC
Diep, PN
Dobrigkeit, C
D'Olivo, JC
Dong, PN
Dornic, D
Dorofeev, A
dos Anjos, JC
Dova, MT
D'Urso, D
Dutan, I
DuVernois, MA
Engel, R
Erdmann, M
Escobar, CO
Etchegoyen, A
Luis, PFS
Falcke, H
Farrar, G
Fauth, AC
Fazzini, N
Ferrer, F
Ferrero, A
Fick, B
Filevich, A
Filipcic, A
Fleck, I
Fliescher, S
Fracchiolla, CE
Fraenkel, ED
Fulgione, W
Gamarra, RF
Gambetta, S
Garcia, B
Gamez, DG
Garcia-Pinto, D
Garrido, X
Gelmini, G
Gemmeke, H
Ghia, PL
Giaccari, U
Giller, M
Glass, H
Goggin, LM
Gold, MS
Golup, G
Albarracin, FG
Berisso, MG
Goncalves, P
do Amaral, MG
Gonzalez, D
Gonzalez, JG
Gora, D
Gorgi, A
Gouffon, P
Grashorn, E
Grebe, S
Grigat, M
Grillo, AF
Guardincerri, Y
Guarino, F
Guedes, GP
Gutierrez, J
Hague, JD
Halenka, V
Hansen, P
Harari, D
Harmsma, S
Harton, JL
Haungs, A
Healy, MD
Hebbeker, T
Hebrero, G
Heck, D
Hojvat, C
Holmes, VC
Homola, P
Horandel, JR
Horneffer, A
Hrabovsky, M
Huege, T
Hussain, M
Iarlori, M
Insolia, A
Ionita, F
Italiano, A
Jiraskova, S
Kaducak, M
Kampert, KH
Karova, T
Kasper, P
Kegl, B
Keilhauer, B
Kemp, E
Kieckhafer, RM
Klages, HO
Kleifges, M
Kleinfeller, J
Knapik, R
Knapp, J
Koang, DH
Krieger, A
Kromer, O
Kruppke-Hansen, D
Kuempel, D
Kunka, N
Kusenko, A
La Rosa, G
Lachaud, C
Lago, BL
Lautridou, P
Leao, MSAB
Lebrun, D
Lebrun, P
Lee, J
de Oliveira, MAL
Lemiere, A
Letessier-Selvon, A
Leuthold, M
Lhenry-Yvon, I
Lopez, R
Aguera, AL
Louedec, K
Bahilo, JL
Lucero, A
Garcia, RL
Lyberis, H
Maccarone, MC
Macolino, C
Maldera, S
Mandat, D
Mantsch, P
Mariazzi, AG
Maris, IC
Falcon, HRM
Martello, D
Martinez, J
Bravo, OM
Mathes, HJ
Matthews, J
Matthews, JAJ
Matthiae, G
Maurizio, D
Mazur, PO
McEwen, M
McNeil, RR
Medina-Tanco, G
Melissas, M
Melo, D
Menichetti, E
Menshikov, A
Meyhandan, R
Micheletti, MI
Miele, G
Miller, W
Miramonti, L
Mollerach, S
Monasor, M
Ragaigne, DM
Montanet, F
Morales, B
Morello, C
Moreno, JC
Morris, C
Mostafa, M
Moura, CA
Mueller, S
Muller, MA
Mussa, R
Navarra, G
Navarro, JL
Navas, S
Necesal, P
Nellen, L
Newman-Holmes, C
Newton, D
Nhung, PT
Nierstenhoefer, N
Nitz, D
Nosek, D
Nozka, L
Nyklicek, M
Oehlschlager, J
Olinto, A
Oliva, P
Olmos-Gilbaja, VM
Ortiz, M
Ortolani, F
Pacheco, N
Selmi-Dei, DP
Palatka, M
Pallotta, J
Parente, G
Parizot, E
Parlati, S
Pastor, S
Patel, M
Paul, T
Pavlidou, V
Payet, K
Pech, M
Pekala, J
Pelayo, R
Pepe, IM
Perrone, L
Pesce, R
Petermann, E
Petrera, S
Petrinca, P
Petrolini, A
Petrov, Y
Petrovic, J
Pfendner, C
Piegaia, R
Pierog, T
Pimenta, M
Pinto, T
Pirronello, V
Pisanti, O
Platino, M
Pochon, J
Ponce, VH
Pontz, M
Privitera, P
Prouza, M
Quel, EJ
Rautenberg, J
Ravel, O
Ravignani, D
Redondo, A
Reucroft, S
Revenu, B
Rezende, FAS
Ridky, J
Riggi, S
Risse, M
Riviere, C
Rizi, V
Robledo, C
Rodriguez, G
Martino, JR
Rojo, JR
Rodriguez-Cabo, I
Rodriguez-Frias, MD
Ros, G
Rosado, J
Rossler, T
Roth, M
Rouille-d'Orfeuil, A
Roulet, E
Rovero, AC
Salamida, F
Salazar, H
Salina, G
Sanchez, F
Santander, M
Santo, CE
Santos, EM
Sarazin, F
Sarkar, S
Sato, R
Scharf, N
Scherini, V
Schieler, H
Schiffer, P
Schmid, A
Schmidt, F
Schmidt, T
Scholten, O
Schoorlemmer, H
Schovancova, J
Schovanek, P
Schroeder, F
Schulte, S
Schussler, F
Schuster, D
Sciutto, SJ
Scuderi, M
Segreto, A
Semikoz, D
Settimo, M
Shellard, RC
Sidelnik, I
Siffert, BB
Smialkowski, A
Smida, R
Smith, BE
Snow, GR
Sommers, P
Sorokin, J
Spinka, H
Squartini, R
Strazzeri, E
Stutz, A
Suarez, F
Suomijarvi, T
Supanitsky, AD
Sutherland, MS
Swain, J
Szadkowski, Z
Tamashiro, A
Tamburro, A
Tarutina, T
Tascau, O
Tcaciuc, R
Tcherniakhovski, D
Thao, NT
Thomas, D
Ticona, R
Tiffenberg, J
Timmermans, C
Tkaczyk, W
Peixoto, CJT
Tome, B
Tonachini, A
Torres, I
Travnicek, P
Tridapalli, DB
Tristram, G
Trovato, E
Tuci, V
Tueros, M
Ulrich, R
Unger, M
Urban, M
Galicia, JFV
Valino, I
Valore, L
van den Berg, AM
Vazquez, JR
Vazquez, RA
Veberic, D
Velarde, A
Venters, T
Verzi, V
Videla, M
Villasenor, L
Vorobiov, S
Voyvodic, L
Wahlberg, H
Wahrlich, P
Wainberg, O
Warner, D
Watson, AA
Westerhoff, S
Whelan, BJ
Wieczorek, G
Wiencke, L
Wilczynska, B
Wilczynski, H
Wileman, C
Winnick, MG
Wu, H
Wundheiler, B
Yamamoto, T
Younk, P
Yuan, G
Zas, E
Zavrtanik, D
Zavrtanik, M
Zaw, I
Zepeda, A
Ziolkowski, M
AF Abraham, J.
Abreu, P.
Aglietta, M.
Aguirre, C.
Ahn, E. J.
Allard, D.
Allekotte, I.
Allen, J.
Allison, P.
Alvarez-Muniz, J.
Ambrosio, M.
Anchordoqui, L.
Andringa, S.
Anzalone, A.
Aramo, C.
Arganda, E.
Argiro, S.
Arisaka, K.
Arneodo, F.
Arqueros, F.
Asch, T.
Asorey, H.
Assis, P.
Aublin, J.
Ave, M.
Avila, G.
Baecker, T.
Badagnani, D.
Barber, K. B.
Barbosa, A. F.
Barroso, S. L. C.
Baughman, B.
Bauleo, P.
Beatty, J. J.
Beau, T.
Becker, B. R.
Becker, K. H.
Belletoile, A.
Bellido, J. A.
BenZvi, S.
Berat, C.
Bernardini, P.
Bertou, X.
Biermann, P. L.
Billoir, P.
Blanch-Bigas, O.
Blanco, F.
Bleve, C.
Bluemer, H.
Bohacova, M.
Bonifazi, C.
Bonino, R.
Borodai, N.
Brack, J.
Brogueira, P.
Brown, W. C.
Bruijn, R.
Buchholz, P.
Bueno, A.
Burton, R. E.
Busca, N. G.
Caballero-Mora, K. S.
Caramete, L.
Caruso, R.
Carvalho, W.
Castellina, A.
Catalano, O.
Cazon, L.
Cester, R.
Chauvin, J.
Chiavassa, A.
Chinellato, J. A.
Chou, A.
Chudoba, J.
Chye, J.
Clay, R. W.
Colombo, E.
Conceicao, R.
Connolly, B.
Contreras, F.
Coppens, J.
Cordier, A.
Cotti, U.
Coutu, S.
Covault, C. E.
Creusot, A.
Criss, A.
Cronin, J.
Curutiu, A.
Dagoret-Campagne, S.
Dallier, R.
Daumiller, K.
Dawson, B. R.
de Almeida, R. M.
De Domenico, M.
De Donato, C.
de Jong, S. J.
De La Vega, G.
de Mello Junior, W. J. M.
de Mello Neto, J. R. T.
De Mitri, I.
de Souza, V.
de Vries, K. D.
Decerprit, G.
del Peral, L.
Deligny, O.
Della Selva, A.
Delle Fratte, C.
Dembinski, H.
Di Giulio, C.
Diaz, J. C.
Diep, P. N.
Dobrigkeit, C.
D'Olivo, J. C.
Dong, P. N.
Dornic, D.
Dorofeev, A.
dos Anjos, J. C.
Dova, M. T.
D'Urso, D.
Dutan, I.
DuVernois, M. A.
Engel, R.
Erdmann, M.
Escobar, C. O.
Etchegoyen, A.
Luis, P. Facal San
Falcke, H.
Farrar, G.
Fauth, A. C.
Fazzini, N.
Ferrer, F.
Ferrero, A.
Fick, B.
Filevich, A.
Filipcic, A.
Fleck, I.
Fliescher, S.
Fracchiolla, C. E.
Fraenkel, E. D.
Fulgione, W.
Gamarra, R. F.
Gambetta, S.
Garcia, B.
Garcia Gamez, D.
Garcia-Pinto, D.
Garrido, X.
Gelmini, G.
Gemmeke, H.
Ghia, P. L.
Giaccari, U.
Giller, M.
Glass, H.
Goggin, L. M.
Gold, M. S.
Golup, G.
Gomez Albarracin, F.
Gomez Berisso, M.
Goncalves, P.
Goncalves do Amaral, M.
Gonzalez, D.
Gonzalez, J. G.
Gora, D.
Gorgi, A.
Gouffon, P.
Grashorn, E.
Grebe, S.
Grigat, M.
Grillo, A. F.
Guardincerri, Y.
Guarino, F.
Guedes, G. P.
Gutierrez, J.
Hague, J. D.
Halenka, V.
Hansen, P.
Harari, D.
Harmsma, S.
Harton, J. L.
Haungs, A.
Healy, M. D.
Hebbeker, T.
Hebrero, G.
Heck, D.
Hojvat, C.
Holmes, V. C.
Homola, P.
Hoerandel, J. R.
Horneffer, A.
Hrabovsky, M.
Huege, T.
Hussain, M.
Iarlori, M.
Insolia, A.
Ionita, F.
Italiano, A.
Jiraskova, S.
Kaducak, M.
Kampert, K. H.
Karova, T.
Kasper, P.
Kegl, B.
Keilhauer, B.
Kemp, E.
Kieckhafer, R. M.
Klages, H. O.
Kleifges, M.
Kleinfeller, J.
Knapik, R.
Knapp, J.
Koang, D. -H.
Krieger, A.
Kroemer, O.
Kruppke-Hansen, D.
Kuempel, D.
Kunka, N.
Kusenko, A.
La Rosa, G.
Lachaud, C.
Lago, B. L.
Lautridou, P.
Leao, M. S. A. B.
Lebrun, D.
Lebrun, P.
Lee, J.
Leigui de Oliveira, M. A.
Lemiere, A.
Letessier-Selvon, A.
Leuthold, M.
Lhenry-Yvon, I.
Lopez, R.
Agueera, A. Lopez
Louedec, K.
Lozano Bahilo, J.
Lucero, A.
Luna Garcia, R.
Lyberis, H.
Maccarone, M. C.
Macolino, C.
Maldera, S.
Mandat, D.
Mantsch, P.
Mariazzi, A. G.
Maris, I. C.
Marquez Falcon, H. R.
Martello, D.
Martinez, J.
Martinez Bravo, O.
Mathes, H. J.
Matthews, J.
Matthews, J. A. J.
Matthiae, G.
Maurizio, D.
Mazur, P. O.
McEwen, M.
McNeil, R. R.
Medina-Tanco, G.
Melissas, M.
Melo, D.
Menichetti, E.
Menshikov, A.
Meyhandan, R.
Micheletti, M. I.
Miele, G.
Miller, W.
Miramonti, L.
Mollerach, S.
Monasor, M.
Monnier Ragaigne, D.
Montanet, F.
Morales, B.
Morello, C.
Moreno, J. C.
Morris, C.
Mostafa, M.
Moura, C. A.
Mueller, S.
Muller, M. A.
Mussa, R.
Navarra, G.
Navarro, J. L.
Navas, S.
Necesal, P.
Nellen, L.
Newman-Holmes, C.
Newton, D.
Nhung, P. T.
Nierstenhoefer, N.
Nitz, D.
Nosek, D.
Nozka, L.
Nyklicek, M.
Oehlschlaeger, J.
Olinto, A.
Oliva, P.
Olmos-Gilbaja, V. M.
Ortiz, M.
Ortolani, F.
Pacheco, N.
Selmi-Dei, D. Pakk
Palatka, M.
Pallotta, J.
Parente, G.
Parizot, E.
Parlati, S.
Pastor, S.
Patel, M.
Paul, T.
Pavlidou, V.
Payet, K.
Pech, M.
Pekala, J.
Pelayo, R.
Pepe, I. M.
Perrone, L.
Pesce, R.
Petermann, E.
Petrera, S.
Petrinca, P.
Petrolini, A.
Petrov, Y.
Petrovic, J.
Pfendner, C.
Piegaia, R.
Pierog, T.
Pimenta, M.
Pinto, T.
Pirronello, V.
Pisanti, O.
Platino, M.
Pochon, J.
Ponce, V. H.
Pontz, M.
Privitera, P.
Prouza, M.
Quel, E. J.
Rautenberg, J.
Ravel, O.
Ravignani, D.
Redondo, A.
Reucroft, S.
Revenu, B.
Rezende, F. A. S.
Ridky, J.
Riggi, S.
Risse, M.
Riviere, C.
Rizi, V.
Robledo, C.
Rodriguez, G.
Rodriguez Martino, J.
Rodriguez Rojo, J.
Rodriguez-Cabo, I.
Rodriguez-Frias, M. D.
Ros, G.
Rosado, J.
Rossler, T.
Roth, M.
Rouille-d'Orfeuil, A.
Roulet, E.
Rovero, A. C.
Salamida, F.
Salazar, H.
Salina, G.
Sanchez, F.
Santander, M.
Santo, C. E.
Santos, E. M.
Sarazin, F.
Sarkar, S.
Sato, R.
Scharf, N.
Scherini, V.
Schieler, H.
Schiffer, P.
Schmid, A.
Schmidt, F.
Schmidt, T.
Scholten, O.
Schoorlemmer, H.
Schovancova, J.
Schovanek, P.
Schroeder, F.
Schulte, S.
Schuessler, F.
Schuster, D.
Sciutto, S. J.
Scuderi, M.
Segreto, A.
Semikoz, D.
Settimo, M.
Shellard, R. C.
Sidelnik, I.
Siffert, B. B.
Smialkowski, A.
Smida, R.
Smith, B. E.
Snow, G. R.
Sommers, P.
Sorokin, J.
Spinka, H.
Squartini, R.
Strazzeri, E.
Stutz, A.
Suarez, F.
Suomijaervi, T.
Supanitsky, A. D.
Sutherland, M. S.
Swain, J.
Szadkowski, Z.
Tamashiro, A.
Tamburro, A.
Tarutina, T.
Tascau, O.
Tcaciuc, R.
Tcherniakhovski, D.
Thao, N. T.
Thomas, D.
Ticona, R.
Tiffenberg, J.
Timmermans, C.
Tkaczyk, W.
Todero Peixoto, C. J.
Tome, B.
Tonachini, A.
Torres, I.
Travnicek, P.
Tridapalli, D. B.
Tristram, G.
Trovato, E.
Tuci, V.
Tueros, M.
Ulrich, R.
Unger, M.
Urban, M.
Valdes Galicia, J. F.
Valino, I.
Valore, L.
van den Berg, A. M.
Vazquez, J. R.
Vazquez, R. A.
Veberic, D.
Velarde, A.
Venters, T.
Verzi, V.
Videla, M.
Villasenor, L.
Vorobiov, S.
Voyvodic, L.
Wahlberg, H.
Wahrlich, P.
Wainberg, O.
Warner, D.
Watson, A. A.
Westerhoff, S.
Whelan, B. J.
Wieczorek, G.
Wiencke, L.
Wilczynska, B.
Wilczynski, H.
Wileman, C.
Winnick, M. G.
Wu, H.
Wundheiler, B.
Yamamoto, T.
Younk, P.
Yuan, G.
Zas, E.
Zavrtanik, D.
Zavrtanik, M.
Zaw, I.
Zepeda, A.
Ziolkowski, M.
CA Pierre Auger Collaboration
TI Atmospheric effects on extensive air showers observed with the surface
detector of the Pierre Auger observatory
SO ASTROPARTICLE PHYSICS
LA English
DT Article
DE Extensive air showers; UHECR; Atmosphere; Weather
ID COSMIC-RAY CASCADES; ENERGY; RECONSTRUCTION; SIMULATION; PROFILES;
IMPACT
AB Atmospheric parameters, Such as pressure (P), temperature (T) and density (rho proportional to P/T), affect the development of extensive air showers initiated by energetic cosmic rays. We have Studied the impact of atmospheric variations on extensive air showers by means of the surface detector of the Pierre Auger Observatory. The rate of events shows a similar to 10% seasonal modulation and similar to 2% diurnal one. We find that the observed behaviour is explained by a model including the effects associated with the variations of P and rho. The former affects the longitudinal development of air showers while the latter influences the Moliere radius and hence the lateral distribution of the shower particles. The model is validated with full simulations of extensive air showers using atmospheric profiles measured at the site of the Pierre Auger Observatory. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Bernardini, P.; Bleve, C.; De Mitri, I.; Giaccari, U.; Martello, D.; Perrone, L.; Settimo, M.] Univ Salento, Dipartimento Fis, Lecce, Italy.
[Bernardini, P.; Bleve, C.; De Mitri, I.; Giaccari, U.; Martello, D.; Perrone, L.; Settimo, M.] Sezione Ist Nazl Fis Nucl, Lecce, Italy.
[Allekotte, I.; Asorey, H.; Bertou, X.; Golup, G.; Gomez Berisso, M.; Harari, D.; Mollerach, S.; Pochon, J.; Ponce, V. H.; Roulet, E.] UNCuyo, CONICET, CNEA, Ctr Atom Bariloche, San Carlos De Bariloche, Rio Negro, Argentina.
[Allekotte, I.; Asorey, H.; Bertou, X.; Golup, G.; Gomez Berisso, M.; Harari, D.; Mollerach, S.; Pochon, J.; Ponce, V. H.; Roulet, E.] UNCuyo, CONICET, CNEA, Inst Balseiro, San Carlos De Bariloche, Rio Negro, Argentina.
[Colombo, E.; Etchegoyen, A.; Ferrero, A.; Filevich, A.; Gamarra, R. F.; Krieger, A.; Micheletti, M. I.; Ravignani, D.; Sidelnik, I.; Suarez, F.; Wainberg, O.; Wundheiler, B.] UTN, FRBA, CONICET, Ctr Atom Constituyentes,Comis Nacl Energia Atom, Buenos Aires, DF, Argentina.
[Rovero, A. C.; Tamashiro, A.] Consejo Nacl Invest Cient & Tecn, Inst Astron & Fis Espacio, RA-1033 Buenos Aires, DF, Argentina.
[Guardincerri, Y.; Piegaia, R.; Tiffenberg, J.] Univ Buenos Aires, FCEyN, Dept Fis, RA-1053 Buenos Aires, DF, Argentina.
[Badagnani, D.; Dova, M. T.; Gomez Albarracin, F.; Hansen, P.; Mariazzi, A. G.; Moreno, J. C.; Sciutto, S. J.; Tarutina, T.; Tueros, M.; Wahlberg, H.] Univ Nacl La Plata, IFLP, La Plata, Buenos Aires, Argentina.
[Badagnani, D.; Dova, M. T.; Gomez Albarracin, F.; Hansen, P.; Mariazzi, A. G.; Moreno, J. C.; Sciutto, S. J.; Tarutina, T.; Tueros, M.; Wahlberg, H.] Consejo Nacl Invest Cient & Tecn, La Plata, Buenos Aires, Argentina.
[Abraham, J.; De La Vega, G.; Garcia, B.; Videla, M.] UTN, FRM, CONICET, CNEA,Observ Meteorol Parque Gral San Martin, Mendoza, Argentina.
[Avila, G.; Contreras, F.; Rodriguez Rojo, J.; Santander, M.; Sato, R.; Squartini, R.] Pierre Auger So Observ, Malargue, Argentina.
[Avila, G.] Comis Nacl Energia Atom, Malargue, Argentina.
[Barber, K. B.; Bellido, J. A.; Clay, R. W.; Holmes, V. C.; Sorokin, J.; Wahrlich, P.; Whelan, B. J.; Winnick, M. G.] Univ Adelaide, Adelaide, SA, Australia.
[Aguirre, C.] Univ Catolica Bolivia, La Paz, Bolivia.
[Ticona, R.; Velarde, A.] Univ Mayor San Andres, La Paz, Bolivia.
[Barbosa, A. F.; dos Anjos, J. C.; Shellard, R. C.] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil.
[Fracchiolla, C. E.; Shellard, R. C.] Pontificia Univ Catolica Rio de Janeiro, Rio De Janeiro, Brazil.
[de Souza, V.] Univ Sao Paulo, Inst Fis, Sao Carlos, SP, Brazil.
[Carvalho, W.; Gouffon, P.; Tridapalli, D. B.] Univ Sao Paulo, Inst Fis, BR-01498 Sao Paulo, Brazil.
[Chinellato, J. A.; de Almeida, R. M.; de Mello Junior, W. J. M.; Dobrigkeit, C.; Escobar, C. O.; Fauth, A. C.; Kemp, E.; Muller, M. A.; Selmi-Dei, D. Pakk] Univ Estadual Campinas, IFGW, Campinas, SP, Brazil.
[Guedes, G. P.] Univ Estadual Feira de Santana, Feira De Santana, Brazil.
[Barroso, S. L. C.] Univ Estadual Sudoeste Bahia, Vitoria Da Conquista, BA, Brazil.
[Pepe, I. M.] Univ Fed Bahia, Salvador, BA, Brazil.
[Leao, M. S. A. B.; Leigui de Oliveira, M. A.; Todero Peixoto, C. J.] Univ Fed ABC, Santo Andre, SP, Brazil.
[de Mello Neto, J. R. T.; Lago, B. L.; Santos, E. M.; Siffert, B. B.] Univ Fed Rio de Janeiro, Inst Fis, Rio De Janeiro, Brazil.
[Goncalves do Amaral, M.] Univ Fed Fluminense, Inst Fis, BR-24020 Niteroi, RJ, Brazil.
[Nosek, D.] Charles Univ Prague, Fac Math & Phys, Inst Particle & Nucl Phys, Prague, Czech Republic.
[Bohacova, M.; Chudoba, J.; Hrabovsky, M.; Karova, T.; Mandat, D.; Necesal, P.; Nozka, L.; Nyklicek, M.; Palatka, M.; Pech, M.; Prouza, M.; Ridky, J.; Schovancova, J.; Schovanek, P.; Smida, R.; Travnicek, P.] Acad Sci Czech Republic, Inst Phys, Prague, Czech Republic.
[Halenka, V.; Hrabovsky, M.; Rossler, T.] Palacky Univ, CR-77147 Olomouc, Czech Republic.
[Deligny, O.; Dornic, D.; Ghia, P. L.; Lemiere, A.; Lhenry-Yvon, I.; Lyberis, H.; Suomijaervi, T.; Urban, M.] Univ Paris 11, CNRS, IN2P3, IPNO, F-91405 Orsay, France.
[Allard, D.; Beau, T.; Busca, N. G.; Decerprit, G.; Lachaud, C.; Parizot, E.; Platino, M.; Rouille-d'Orfeuil, A.; Semikoz, D.; Tristram, G.] Univ Paris 07, CNRS, IN2P3, Lab AstroParticule & Cosmol, Paris 05, France.
[Cordier, A.; Dagoret-Campagne, S.; Garrido, X.; Kegl, B.; Louedec, K.; Luna Garcia, R.; Monnier Ragaigne, D.; Strazzeri, E.; Wu, H.] Univ Paris 11, CNRS, IN2P3, LAL, F-91405 Orsay, France.
[Aublin, J.; Billoir, P.; Blanch-Bigas, O.; Bonifazi, C.; Letessier-Selvon, A.] Univ Paris 06, LPNHE, Paris 05, France.
[Belletoile, A.; Berat, C.; Chauvin, J.; Koang, D. -H.; Lebrun, D.; Montanet, F.; Payet, K.; Riviere, C.; Stutz, A.] Univ Grenoble 1, CNRS, IN2P3, LPSC,INPG, Grenoble, France.
[Dallier, R.; Lautridou, P.; Ravel, O.; Revenu, B.] CNRS, IN2P3, SUBATECH, Nantes, France.
[Becker, K. H.; Kampert, K. H.; Kruppke-Hansen, D.; Kuempel, D.; Nierstenhoefer, N.; Oliva, P.; Rautenberg, J.; Risse, M.; Scherini, V.; Tascau, O.] Berg Univ Wuppertal, Wuppertal, Germany.
[Bluemer, H.; Daumiller, K.; Engel, R.; Garrido, X.; Haungs, A.; Heck, D.; Huege, T.; Keilhauer, B.; Klages, H. O.; Kleinfeller, J.; Mathes, H. J.; Mueller, S.; Oehlschlaeger, J.; Pierog, T.; Roth, M.; Schieler, H.; Schroeder, F.; Schuessler, F.; Ulrich, R.; Unger, M.; Valino, I.] Forschungszentrum Karlsruhe, Inst Kernphys, D-76021 Karlsruhe, Germany.
[Asch, T.; Cazon, L.; Gemmeke, H.; Kleifges, M.; Kroemer, O.; Kunka, N.; Menshikov, A.; Schmid, A.; Tcherniakhovski, D.] Forschungszentrum Karlsruhe, Inst Prozessdatenverarbeitung & Elekt, Karlsruhe, Germany.
[Biermann, P. L.; Caramete, L.; Curutiu, A.; Dawson, B. R.; Dutan, I.] Max Planck Inst Radioastron, D-5300 Bonn, Germany.
[Dembinski, H.; Erdmann, M.; Fliescher, S.; Grigat, M.; Hebbeker, T.; Leuthold, M.; Scharf, N.; Schiffer, P.; Schulte, S.] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany.
[Bluemer, H.; Caballero-Mora, K. S.; Gonzalez, D.; Gora, D.; Maris, I. C.; Melissas, M.; Tamburro, A.] Univ Karlsruhe TH, Inst Expt Kernphys, Karlsruhe, Germany.
[Baecker, T.; Buchholz, P.; Fleck, I.; Pontz, M.; Tcaciuc, R.; Ziolkowski, M.] Univ Siegen, Siegen, Germany.
[Gambetta, S.; Pesce, R.; Petrolini, A.] Univ Genoa, Dipartimento Fis, Genoa, Italy.
[Gambetta, S.; Pesce, R.; Petrolini, A.] Ist Nazl Fis Nucl, I-16146 Genoa, Italy.
[Iarlori, M.; Macolino, C.; Petrera, S.; Rizi, V.; Salamida, F.] Univ Aquila, I-67100 Laquila, Italy.
[Arneodo, F.; Grillo, A. F.; Parlati, S.] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, Laquila, Italy.
[De Donato, C.; Miramonti, L.] Univ Milan, Milan, Italy.
[De Donato, C.; Miramonti, L.] Sezione Ist Nazl Fis Nucl, Milan, Italy.
[Ambrosio, M.; Aramo, C.; Della Selva, A.; D'Urso, D.; Guarino, F.; Miele, G.; Moura, C. A.; Pisanti, O.; Valore, L.] Univ Naples Federico II, Naples, Italy.
[Ambrosio, M.; Aramo, C.; Della Selva, A.; D'Urso, D.; Guarino, F.; Miele, G.; Moura, C. A.; Pisanti, O.; Valore, L.] Sezione Ist Nazl Fis Nucl, Naples, Italy.
[Delle Fratte, C.; Di Giulio, C.; Matthiae, G.; Ortolani, F.; Petrinca, P.; Rodriguez, G.; Salina, G.; Tuci, V.; Verzi, V.] Univ Roma Tor Vergata, I-00173 Rome, Italy.
[Delle Fratte, C.; Di Giulio, C.; Matthiae, G.; Ortolani, F.; Petrinca, P.; Rodriguez, G.; Salina, G.; Tuci, V.; Verzi, V.] Sezione Ist Nazl Fis Nucl, Rome, Italy.
[Caruso, R.; De Domenico, M.; Insolia, A.; Italiano, A.; Pirronello, V.; Riggi, S.; Rodriguez Martino, J.; Scuderi, M.; Trovato, E.] Univ Catania, Catania, Italy.
[Caruso, R.; De Domenico, M.; Insolia, A.; Italiano, A.; Pirronello, V.; Riggi, S.; Rodriguez Martino, J.; Scuderi, M.; Trovato, E.] Sezione Ist Nazl Fis Nucl, Catania, Italy.
[Bonino, R.; Castellina, A.; Chiavassa, A.; Fulgione, W.; Ghia, P. L.; Gorgi, A.; Lucero, A.; Maldera, S.; Morello, C.; Navarra, G.] Univ Turin, Ist Fis Spazio Interplanetario, INAF, Turin, Italy.
[Aglietta, M.; Argiro, S.; Bonino, R.; Castellina, A.; Cester, R.; Chiavassa, A.; Fulgione, W.; Ghia, P. L.; Gorgi, A.; Lucero, A.; Maldera, S.; Maurizio, D.; Melo, D.; Menichetti, E.; Morello, C.; Navarra, G.; Tonachini, A.] Sezione Ist Nazl Fis Nucl, Turin, Italy.
[Anzalone, A.; Catalano, O.; La Rosa, G.; Maccarone, M. C.; Schmidt, T.; Segreto, A.] Ist Astrofis Spaziale & Fis Cosm Palermo, INAF, Palermo, Italy.
[Lopez, R.; Martinez Bravo, O.; Robledo, C.; Salazar, H.; Torres, I.] Benemerita Univ Autonoma Puebla, Puebla, Mexico.
[Zepeda, A.] CINVESTAV, IPN, Mexico City 14000, DF, Mexico.
[Martinez, J.] Inst Politecn Nacl, Mexico City, DF, Mexico.
[Allard, D.; Cotti, U.; Marquez Falcon, H. R.; Pelayo, R.; Villasenor, L.] Univ Michoacana, Morelia, Michoacan, Mexico.
[D'Olivo, J. C.; Medina-Tanco, G.; Morales, B.; Sanchez, F.; Supanitsky, A. D.; Valdes Galicia, J. F.] Univ Nacl Autonoma Mexico, Morelia, Michoacan, Mexico.
[Coppens, J.; de Jong, S. J.; Falcke, H.; Grebe, S.; Hoerandel, J. R.; Horneffer, A.; Jiraskova, S.; Schoorlemmer, H.; Timmermans, C.] Radboud Univ Nijmegen, IMAPP, NL-6525 ED Nijmegen, Netherlands.
[de Vries, K. D.; Fraenkel, E. D.; Harmsma, S.; Meyhandan, R.; Nellen, L.; Scholten, O.; van den Berg, A. M.] Univ Groningen, Kernfys Versneller Inst, Groningen, Netherlands.
[Coppens, J.; Harmsma, S.; Timmermans, C.] NIKHEF, Amsterdam, Netherlands.
[Falcke, H.; Petrovic, J.] ASTRON, Dwingeloo, Netherlands.
[Borodai, N.; Gora, D.; Homola, P.; Pekala, J.; Wilczynska, B.; Wilczynski, H.] PAN, Inst Nucl Phys, Krakow, Poland.
[Giller, M.; Smialkowski, A.; Szadkowski, Z.; Tkaczyk, W.; Wieczorek, G.] Univ Lodz, PL-90131 Lodz, Poland.
[Abreu, P.; Andringa, S.; Assis, P.; Brogueira, P.; Conceicao, R.; Goncalves, P.; Pimenta, M.; Santo, C. E.; Tome, B.] LIP, P-1000 Lisbon, Portugal.
[Abreu, P.; Andringa, S.; Assis, P.; Brogueira, P.; Conceicao, R.; Goncalves, P.; Pimenta, M.; Santo, C. E.; Tome, B.] Inst Super Tecn, Lisbon, Portugal.
[Filipcic, A.; Smith, B. E.] Jozef Stefan Inst, Ljubljana, Slovenia.
[Creusot, A.; Filipcic, A.; Hussain, M.; Veberic, D.; Vorobiov, S.; Zavrtanik, D.; Zavrtanik, M.] Univ Nova Gorica, Lab Astroparticle Phys, Nova Gorica, Slovenia.
[Pinto, T.; Veberic, D.; Zavrtanik, D.; Zavrtanik, M.] Univ Valencia, CSIC, Inst Fis Corpuscular, Valencia, Spain.
[Arganda, E.; Arqueros, F.; Blanco, F.; Garcia-Pinto, D.; Monasor, M.; Ortiz, M.; Ros, G.; Rosado, J.; Vazquez, J. R.] Univ Complutense Madrid, Madrid, Spain.
[del Peral, L.; Gutierrez, J.; Hebrero, G.; McEwen, M.; Pacheco, N.; Redondo, A.; Rodriguez-Frias, M. D.; Ros, G.] Univ Alcala de Henares, Madrid, Spain.
[Bueno, A.; Garcia Gamez, D.; Gonzalez, J. G.; Lozano Bahilo, J.; Navarro, J. L.; Navas, S.] Univ Granada, Granada, Spain.
[Bueno, A.; Garcia Gamez, D.; Gonzalez, J. G.; Lozano Bahilo, J.; Navarro, J. L.; Navas, S.] CAFPE, Granada, Spain.
[Alvarez-Muniz, J.; Luis, P. Facal San; Agueera, A. Lopez; Olmos-Gilbaja, V. M.; Parente, G.; Vazquez, R. A.; Zas, E.] Univ Santiago de Compostela, Santiago De Compostela, Spain.
[Sarkar, S.] Univ Oxford, Rudolf Peierls Ctr Theoret Phys, Oxford, England.
[Bruijn, R.; Knapp, J.; Newton, D.; Patel, M.; Rodriguez-Cabo, I.; Watson, A. A.; Wileman, C.] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England.
[Spinka, H.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Burton, R. E.; Covault, C. E.; Ferrer, F.] Case Western Reserve Univ, Cleveland, OH 44106 USA.
[Sarazin, F.; Schuster, D.] Colorado Sch Mines, Golden, CO 80401 USA.
[Bauleo, P.; Brack, J.; Harton, J. L.; Knapik, R.; Mostafa, M.; Petrov, Y.; Thomas, D.; Warner, D.; Wiencke, L.; Younk, P.] Colorado State Univ, Ft Collins, CO 80523 USA.
[Brown, W. C.] Colorado State Univ, Pueblo, CO USA.
[Ahn, E. J.; Chou, A.; Fazzini, N.; Glass, H.; Gonzalez, J. G.; Hojvat, C.; Kaducak, M.; Kasper, P.; Lebrun, P.; Mantsch, P.; Mazur, P. O.; Newman-Holmes, C.; Spinka, H.; Voyvodic, L.] Fermilab Natl Accelerator Lab, Batavia, IL USA.
[Dorofeev, A.; Matthews, J.; McNeil, R. R.; Yuan, G.] Louisiana State Univ, Baton Rouge, LA 70803 USA.
[Chye, J.; Diaz, J. C.; Nitz, D.] Michigan Technol Univ, Houghton, MI 49931 USA.
[Allen, J.; Chou, A.; Farrar, G.; Fick, B.; Morris, C.; Zaw, I.] NYU, New York, NY USA.
[Kieckhafer, R. M.; Paul, T.; Reucroft, S.; Swain, J.] Northeastern Univ, Boston, MA 02115 USA.
[Allison, P.; Baughman, B.; Beatty, J. J.; Sutherland, M. S.] Ohio State Univ, Columbus, OH 43210 USA.
[Coutu, S.; Criss, A.; Sommers, P.] Penn State Univ, University Pk, PA 16802 USA.
[Matthews, J.] Southern Univ, Baton Rouge, LA USA.
[Arisaka, K.; Bellido, J. A.; Gelmini, G.; Healy, M. D.; Kusenko, A.; Lee, J.] Univ Calif Los Angeles, Los Angeles, CA USA.
[Ave, M.; Bohacova, M.; Cronin, J.; Luis, P. Facal San; Ionita, F.; Olinto, A.; Pavlidou, V.; Privitera, P.; Schmidt, F.; Venters, T.; Yamamoto, T.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
[DuVernois, M. A.] Univ Hawaii, Honolulu, HI 96822 USA.
[Petermann, E.; Snow, G. R.] Univ Nebraska, Lincoln, NE USA.
[Becker, B. R.; Gold, M. S.; Hague, J. D.; Matthews, J. A. J.; Miller, W.] Univ New Mexico, Albuquerque, NM 87131 USA.
[Connolly, B.] Univ Penn, Philadelphia, PA 19104 USA.
[BenZvi, S.; Pfendner, C.; Westerhoff, S.] Univ Wisconsin, Madison, WI USA.
[Anchordoqui, L.; Goggin, L. M.] Univ Wisconsin, Milwaukee, WI 53201 USA.
[Diep, P. N.; Dong, P. N.; Nhung, P. T.; Thao, N. T.] Inst Nucl Sci & Technol, Hanoi, Vietnam.
[Pavlidou, V.] CALTECH, Pasadena, CA 91125 USA.
[Yamamoto, T.] Konan Univ, Kobe, Hyogo, Japan.
RP Bleve, C (reprint author), Univ Salento, Dipartimento Fis, Lecce, Italy.
EM Carla.Bleve@le.infn.it
RI Pavlidou, Vasiliki/C-2944-2011; Arneodo, Francesco/E-5061-2015; Bueno,
Antonio/F-3875-2015; Parente, Gonzalo/G-8264-2015; Alvarez-Muniz,
Jaime/H-1857-2015; Rosado, Jaime/K-9109-2014; Valino, Ines/J-8324-2012;
Carvalho Jr., Washington/H-9855-2015; Navas, Sergio/N-4649-2014; De
Donato, Cinzia/J-9132-2015; Vazquez, Jose Ramon/K-2272-2015; Martello,
Daniele/J-3131-2012; Travnicek, Petr/G-8814-2014; Smida,
Radomir/G-6314-2014; Ridky, Jan/H-6184-2014; Chudoba, Jiri/G-7737-2014;
Pech, Miroslav/G-5760-2014; Garcia Pinto, Diego/J-6724-2014; Pastor,
Sergio/J-6902-2014; Tome, Bernardo/J-4410-2013; Espirito Santo, Maria
Catarina/L-2341-2014; Pimenta, Mario/M-1741-2013; Di Giulio,
Claudio/B-3319-2015; Arneodo, Francesco/B-8076-2013; Anjos,
Joao/C-8335-2013; Schussler, Fabian/G-5313-2013; Nierstenhofer,
Nils/H-3699-2013; Goncalves, Patricia /D-8229-2013; Assis,
Pedro/D-9062-2013; Prouza, Michael/F-8514-2014; Mandat,
Dusan/G-5580-2014; Bohacova, Martina/G-5898-2014; Nozka,
Libor/G-5550-2014; Cazon, Lorenzo/G-6921-2014; Schovanek,
Petr/G-7117-2014; Todero Peixoto, Carlos Jose/G-3873-2012; de souza,
Vitor/D-1381-2012; Shellard, Ronald/G-4825-2012; Petrolini,
Alessandro/H-3782-2011; Miele, Gennaro/F-3628-2010; Muller, Marcio
Aparecido/H-9112-2012; fulgione, walter/I-5232-2012; D'Urso,
Domenico/I-5325-2012; Bleve, Carla/J-2521-2012; Brogueira,
Pedro/K-3868-2012; Chinellato, Jose Augusto/I-7972-2012; Tamburro,
Alessio/A-5703-2013; Falcke, Heino/H-5262-2012; Kemp,
Ernesto/H-1502-2011; Chiavassa, Andrea/A-7597-2012; Verzi,
Valerio/B-1149-2012; Chinellato, Carola Dobrigkeit /F-2540-2011;
Venters, Tonia/D-2936-2012; Fauth, Anderson/F-9570-2012; De Domenico,
Manlio/D-1966-2009; Dias, Sandra/F-8134-2010; Caramete,
Laurentiu/C-2328-2011; Dutan, Ioana/C-2337-2011; Aramo,
Carla/D-4317-2011; Pesce, Roberto/G-5791-2011; Insolia,
Antonio/M-3447-2015; Ros, German/L-4764-2014; de Mello Neto,
Joao/C-5822-2013; Fulgione, Walter/C-8255-2016; De Domenico,
Manlio/B-5826-2014; Lozano-Bahilo, Julio/F-4881-2016; ORTOLANI,
FABRIZIO/F-7271-2016; scuderi, mario/O-7019-2014; zas,
enrique/I-5556-2015; Sarkar, Subir/G-5978-2011; Moura Santos,
Edivaldo/K-5313-2016; Gouffon, Philippe/I-4549-2012; Inst. of Physics,
Gleb Wataghin/A-9780-2017; De Mitri, Ivan/C-1728-2017; Rodriguez
Fernandez, Gonzalo/C-1432-2014; Nosek, Dalibor/F-1129-2017; Abreu,
Pedro/L-2220-2014; Arqueros, Fernando/K-9460-2014; Blanco,
Francisco/F-1131-2015; Conceicao, Ruben/L-2971-2014; Beatty,
James/D-9310-2011; Guarino, Fausto/I-3166-2012; Sao Carlos Institute of
Physics, IFSC/USP/M-2664-2016; Bonino, Raffaella/S-2367-2016; Rodriguez
Frias, Maria /A-7608-2015; Oliva, Pietro/K-5915-2015; de Almeida,
Rogerio/L-4584-2016
OI Pavlidou, Vasiliki/0000-0002-0870-1368; Arneodo,
Francesco/0000-0002-1061-0510; Bueno, Antonio/0000-0002-7439-4247;
Parente, Gonzalo/0000-0003-2847-0461; Alvarez-Muniz,
Jaime/0000-0002-2367-0803; Rosado, Jaime/0000-0001-8208-9480; Valino,
Ines/0000-0001-7823-0154; Carvalho Jr., Washington/0000-0002-2328-7628;
Navas, Sergio/0000-0003-1688-5758; De Donato,
Cinzia/0000-0002-9725-1281; Vazquez, Jose Ramon/0000-0001-9217-5219;
Martello, Daniele/0000-0003-2046-3910; Ridky, Jan/0000-0001-6697-1393;
Garcia Pinto, Diego/0000-0003-1348-6735; Tome,
Bernardo/0000-0002-7564-8392; Espirito Santo, Maria
Catarina/0000-0003-1286-7288; Pimenta, Mario/0000-0002-2590-0908; Di
Giulio, Claudio/0000-0002-0597-4547; Arneodo,
Francesco/0000-0002-1061-0510; Schussler, Fabian/0000-0003-1500-6571;
Goncalves, Patricia /0000-0003-2042-3759; Assis,
Pedro/0000-0001-7765-3606; Prouza, Michael/0000-0002-3238-9597; Cazon,
Lorenzo/0000-0001-6748-8395; Todero Peixoto, Carlos
Jose/0000-0003-3669-8212; Shellard, Ronald/0000-0002-2983-1815;
Petrolini, Alessandro/0000-0003-0222-7594; Miele,
Gennaro/0000-0002-2028-0578; D'Urso, Domenico/0000-0002-8215-4542;
Brogueira, Pedro/0000-0001-6069-4073; Chinellato, Jose
Augusto/0000-0002-3240-6270; Falcke, Heino/0000-0002-2526-6724;
Chinellato, Carola Dobrigkeit /0000-0002-1236-0789; Fauth,
Anderson/0000-0001-7239-0288; Del Peral, Luis/0000-0003-2580-5668;
Coutu, Stephane/0000-0003-2923-2246; Ulrich, Ralf/0000-0002-2535-402X;
Garcia, Beatriz/0000-0003-0919-2734; Dembinski,
Hans/0000-0003-3337-3850; Petrera, Sergio/0000-0002-6029-1255; Bonino,
Raffaella/0000-0002-4264-1215; Mussa, Roberto/0000-0002-0294-9071;
Insolia, Antonio/0000-0002-9040-1566; Ros, German/0000-0001-6623-1483;
de Mello Neto, Joao/0000-0002-3234-6634; Fulgione,
Walter/0000-0002-2388-3809; De Domenico, Manlio/0000-0001-5158-8594;
Lozano-Bahilo, Julio/0000-0003-0613-140X; ORTOLANI,
FABRIZIO/0000-0003-4527-1843; scuderi, mario/0000-0001-9026-5317; zas,
enrique/0000-0002-4430-8117; Sarkar, Subir/0000-0002-3542-858X; Moura
Santos, Edivaldo/0000-0002-2818-8813; Gouffon,
Philippe/0000-0001-7511-4115; Segreto, Alberto/0000-0001-7341-6603;
Knapp, Johannes/0000-0003-1519-1383; Rizi, Vincenzo/0000-0002-5277-6527;
Andringa, Sofia/0000-0002-6397-9207; Aramo, Carla/0000-0002-8412-3846;
Anzalone, Anna/0000-0003-1849-198X; Matthews, James/0000-0002-1832-4420;
Yuan, Guofeng/0000-0002-1907-8815; de Jong,
Sijbrand/0000-0002-3120-3367; La Rosa, Giovanni/0000-0002-3931-2269;
Asorey, Hernan/0000-0002-4559-8785; Ravignani,
Diego/0000-0001-7410-8522; Aglietta, Marco/0000-0001-8354-5388;
Maccarone, Maria Concetta/0000-0001-8722-0361; Kothandan,
Divay/0000-0001-9048-7518; Castellina, Antonella/0000-0002-0045-2467;
maldera, simone/0000-0002-0698-4421; De Mitri, Ivan/0000-0002-8665-1730;
Rodriguez Fernandez, Gonzalo/0000-0002-4683-230X; Nosek,
Dalibor/0000-0001-6219-200X; Navarro Quirante, Jose
Luis/0000-0002-9915-1735; Mantsch, Paul/0000-0002-8382-7745; Gomez
Berisso, Mariano/0000-0001-5530-0180; Salamida,
Francesco/0000-0002-9306-8447; Catalano, Osvaldo/0000-0002-9554-4128;
Abreu, Pedro/0000-0002-9973-7314; Arqueros,
Fernando/0000-0002-4930-9282; Blanco, Francisco/0000-0003-4332-434X;
Conceicao, Ruben/0000-0003-4945-5340; Beatty, James/0000-0003-0481-4952;
Guarino, Fausto/0000-0003-1427-9885; Rodriguez Frias, Maria
/0000-0002-2550-4462; Oliva, Pietro/0000-0002-3572-3255; de Almeida,
Rogerio/0000-0003-3104-2724
FU Comision Nacional de Energia Atomica; Fundacion Antorchas; Gobierno De
La Provincia de Mendoza; Municipalidad de Malargue; NDM Holdings and
Valle Las Lenas; Australian Research Council; Conselho Nacional de
Desenvolvimento Cientifico e Tecnologico (CNPq); Financiadora de Estudos
e Projetos (FINEP); Fundacao de Amparo a Pesquisa do Estado de Rio de
Janeiro (FAPERJ); Fundacao de Amparo A Pesquisa do Estado de Sao Paulo
(FAPESP); Ministerio de Ciencia e Tecnologia (MCT), Brazil; AVCR
[AVOZ10100502, AVOZ10100522]; GAAV [KJB300100801, KJB100100904]; MSMT-CR
[LA08016, LC527, 1M06002, MSM0021620859]; Czech Republic; Centre de
Calcul IN2P3/CNRS; Centre National de la Recherche Scientifique (CNRS);
Conseil Regional Ile-de-France; Departement Physique Nuclaire et
Corpusculaire (PNC-IN2P3/CNRS); Departement Sciences de I'Univers
(SDU-INSU/CNRS), France; Bundesministerium fur Bildung und Forschung
(BMBF); Deutsche Forschungsgerneinschaft (DFG); Helmholtz-Gemeinschaft
Deutscher Forschungszentren (HGF); Finanzministerium Baden-Wurttemberg;
Ministerium fur Wissenschaft und Forschung; Nordrhein-Westfalen;
Ministerium fur Wissenschaft; Forschung und Kunst; Baden-Wurttemberg,
Germany; Istituto Nazionale di Fisica Nucleare (INFN); Ministero
dell'Istruzione, dell'Universita e della Ricerca (MIUR), Italy; Consejo
Nacional de Ciencia y Tecnologia (CONACYT), Mexico; Ministerie van
Onderwijs; Cultuur en Wetenschap; Nederlandse Organisatie voor
Wetenschappelijk Onderzoek (NWO); Stichting voor Fundamenteel Onderzoek
der Materie (FOM), The Netherlands; Ministry of Science and Higher
Education, Poland [1 P03 D 014 30, N202 090 31/0623, PAP/218/2006];
Fundacao para a Ciencia e a Tecnologia, Portugal; Ministry for Higher
Education, Science, and Technology, Slovenian Research Agency, Slovenia;
Comunidad de Madrid; Consejeria de Educacion de la Comunidad de Castilla
La Mancha; FEDER funds; Ministerio de Ciencia e Innovacion; Xunta de
Galicia, Spain; Science and Technology Facilities Council, United
Kingdom; Department of Energy [DE-AC02-07CH11359]; National Science
Foundation [0450696]; Grainger Foundation USA; ALFA-EC/HELEN; European
Union [MEIF-CT-2005-025057, PIEF-GA-2008-220240]; UNESCO
FX The successful installation and commissioning of the Pierre Auger
observatory would not have been possible without the strong commitment
and effort from the technical and administrative staff in Malargue.; We
are very grateful to the following agencies and organizations for
financial support: Comision Nacional de Energia Atomica, Fundacion
Antorchas, Gobierno De La Provincia de Mendoza, Municipalidad de
Malargue, NDM Holdings and Valle Las Lenas, in gratitude for their
continuing cooperation over land access, Argentina, the Australian
Research Council; Conselho Nacional de Desenvolvimento Cientifico e
Tecnologico (CNPq), Financiadora de Estudos e Projetos (FINEP), Fundacao
de Amparo a Pesquisa do Estado de Rio de Janeiro (FAPERJ), Fundacao de
Amparo A Pesquisa do Estado de Sao Paulo (FAPESP), Ministerio de Ciencia
e Tecnologia (MCT), Brazil; AVCR AVOZ10100502 and AVOZ10100522, GAAV
KJB300100801 and KJB100100904, MSMT-CR LA08016, LC527, 1M06002, and
MSM0021620859, Czech Republic; Centre de Calcul IN2P3/CNRS, Centre
National de la Recherche Scientifique (CNRS), Conseil Regional
Ile-de-France, Departement Physique Nuclaire et Corpusculaire
(PNC-IN2P3/CNRS), Departement Sciences de I'Univers (SDU-INSU/CNRS),
France; Bundesministerium fur Bildung und Forschung (BMBF), Deutsche
Forschungsgerneinschaft (DFG), Helmholtz-Gemeinschaft Deutscher
Forschungszentren (HGF), Finanzministerium Baden-Wurttemberg,
Ministerium fur Wissenschaft und Forschung, Nordrhein-Westfalen,
Ministerium fur Wissenschaft, Forschung und Kunst, Baden-Wurttemberg,
Germany; Istituto Nazionale di Fisica Nucleare (INFN), Ministero
dell'Istruzione, dell'Universita e della Ricerca (MIUR), Italy; Consejo
Nacional de Ciencia y Tecnologia (CONACYT), Mexico; Ministerie van
Onderwijs, Cultuur en Wetenschap, Nederlandse Organisatie voor
Wetenschappelijk Onderzoek (NWO), Stichting voor Fundamenteel Onderzoek
der Materie (FOM), The Netherlands; Ministry of Science and Higher
Education, Grant Nos. 1 P03 D 014 30, N202 090 31/0623, and
PAP/218/2006, Poland; Fundacao para a Ciencia e a Tecnologia, Portugal;
Ministry for Higher Education, Science, and Technology, Slovenian
Research Agency, Slovenia; Comunidad de Madrid, Consejeria de Educacion
de la Comunidad de Castilla La Mancha, FEDER funds, Ministerio de
Ciencia e Innovacion, Xunta de Galicia, Spain; Science and Technology
Facilities Council, United Kingdom: Department of Energy, Contract No.
DE-AC02-07CH11359, National Science Foundation, Grant No. 0450696, The
Grainger Foundation USA; ALFA-EC/HELEN, European Union 6th Framework
Program, Grant No. MEIF-CT-2005-025057, European Union 7th Framework
Program, Grant No. PIEF-GA-2008-220240, and UNESCO.
NR 25
TC 26
Z9 26
U1 0
U2 26
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0927-6505
EI 1873-2852
J9 ASTROPART PHYS
JI Astropart Phys.
PD SEP
PY 2009
VL 32
IS 2
BP 89
EP 99
DI 10.1016/j.astropartphys.2009.06.004
PG 11
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 513RL
UT WOS:000271340800002
ER
PT J
AU Grasso, D
Profumo, S
Strong, AW
Baldini, L
Bellazzini, R
Bloom, ED
Bregeon, J
Di Bernardo, G
Gaggero, D
Giglietto, N
Kamae, T
Latronico, L
Longo, F
Mazziotta, MN
Moiseev, AA
Morselli, A
Ormes, JF
Pesce-Rollins, M
Pohl, M
Razzano, M
Sgro, C
Spandre, G
Stephens, TE
AF Grasso, D.
Profumo, S.
Strong, A. W.
Baldini, L.
Bellazzini, R.
Bloom, E. D.
Bregeon, J.
Di Bernardo, G.
Gaggero, D.
Giglietto, N.
Kamae, T.
Latronico, L.
Longo, F.
Mazziotta, M. N.
Moiseev, A. A.
Morselli, A.
Ormes, J. F.
Pesce-Rollins, M.
Pohl, M.
Razzano, M.
Sgro, C.
Spandre, G.
Stephens, T. E.
TI On possible interpretations of the high energy electron-positron
spectrum measured by the Fermi Large Area Telescope
SO ASTROPARTICLE PHYSICS
LA English
DT Article
DE Cosmic ray electrons and positrons; Pulsars; Dark-matter; Fermi-LAT
ID COSMIC-RAY ELECTRONS; DARK-MATTER; SUPERNOVA-REMNANTS; GAMMA-RAYS;
PULSARS; PROPAGATION; ORIGIN; FLIGHT
AB The Fermi-LAT experiment recently reported high precision measurements of the spectrum of cosmic-ray electrons-plus-positrons (CRE) between 20 GeV and 1 TeV. The spectrum shows no prominent spectral features, and is significantly harder than that inferred from several previous experiments. Here we discuss several interpretations of the Fermi results based either on a single large scale Galactic CRE component or by invoking additional electron-positron primary sources, e.g. nearby pulsars or particle dark matter annihilation. We show that while the reported Fermi-LAT data alone can be interpreted in terms of a single component scenario, when combined with other complementary experimental results, specifically the CRE spectrum measured by H.E.S.S. and especially the positron fraction reported by PAMELA between 1 and 100 GeV, that class of models fails to provide a consistent interpretation. Rather, we find that several combinations of parameters, involving both the pulsar and dark matter scenarios, allow a consistent description of those results. We also briefly discuss the possibility of discriminating between the pulsar and dark matter interpretations by looking for a possible anisotropy in the CRE flux. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Grasso, D.; Baldini, L.; Bellazzini, R.; Bregeon, J.; Di Bernardo, G.; Gaggero, D.; Latronico, L.; Pesce-Rollins, M.; Razzano, M.; Sgro, C.; Spandre, G.] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy.
[Profumo, S.] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA.
[Profumo, S.] Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA.
[Strong, A. W.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany.
[Bloom, E. D.; Kamae, T.] Stanford Univ, Dept Phys, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA.
[Bloom, E. D.; Kamae, T.] Stanford Univ, Natl Accelerator Lab, SLAC, Stanford, CA 94305 USA.
[Di Bernardo, G.; Gaggero, D.] Univ Pisa, Dipartimento Fis, I-56127 Pisa, Italy.
[Giglietto, N.] M Merlin Univ, Dipartmento Fis, I-70126 Bari, Italy.
[Giglietto, N.] Politecn Bari, I-70126 Bari, Italy.
[Giglietto, N.; Mazziotta, M. N.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.
[Longo, F.] Univ Trieste, Dipartmento Fis, I-34127 Trieste, Italy.
[Moiseev, A. A.] NASA, Goddard Space Flight Ctr, CRESST, Greenbelt, MD 20771 USA.
[Moiseev, A. A.] Univ Maryland, College Pk, MD 20742 USA.
[Morselli, A.] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy.
[Ormes, J. F.] Univ Denver, Dept Phys & Astron, Denver, CO 80208 USA.
[Pohl, M.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Stephens, T. E.] NASA, Ames Res Ctr, Univ Space Res Assoc, Moffett Field, CA 94035 USA.
RP Grasso, D (reprint author), Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy.
EM dario.grasso@pi.infn.it; profumo@scipp.ucsc.edu; aws@mpe.mpg.de
RI Baldini, Luca/E-5396-2012; Morselli, Aldo/G-6769-2011; Grasso,
Dario/I-2440-2012; giglietto, nicola/I-8951-2012; Mazziotta, Mario
/O-8867-2015; Sgro, Carmelo/K-3395-2016;
OI Morselli, Aldo/0000-0002-7704-9553; Grasso, Dario/0000-0001-7761-7242;
giglietto, nicola/0000-0002-9021-2888; Pesce-Rollins,
Melissa/0000-0003-1790-8018; Baldini, Luca/0000-0002-9785-7726;
Mazziotta, Mario /0000-0001-9325-4672; Sgro',
Carmelo/0000-0001-5676-6214; Stephens, Thomas/0000-0003-3065-6871
FU Italian Space Agency [AMS-02.ASI/AMS-02 n.I/035/07/0]; Dipartimento di
Fisica dell'Universita di Padova and UniverseNet EU Network
[MRTN-CF-2006-035863]; US DoE [DEFG02-04ER41268, DE-AC02-76-SF00515];
NSF [PHY-0757911]
FX The Fermi LAT Collaboration acknowledges generous ongoing support from a
number of agencies and institutes that have supported both the
development and the operation of the LAT as well as scientific data
analysis. These include the National Aeronautics and Space
Administration and the Department of Energy in the United States, the
Commissariat I'Energie Atomique and the Centre National de la Recherche
Scientifique/Institut National de Physique Nuclaire et de Physique des
Particules in France, the Agenzia Spaziale Italiana and the Istituto
Nazionale di Fisica Nucleare in Italy, the Ministry of Education,
Culture, Sports, Science and Technology (MEXT), High Energy Accelerator
Research Organization (KEK) and Japan Aerospace Exploration Agency
(JAXA) in Japan, and the K.A. Wallenberg Foundation, the Swedish
Research Council and the Swedish National Space Board in Sweden.;
Additional support for science analysis during the operations phase from
the following agency is also gratefully acknowledged: the Istituto
Nazionale di Astrofisica in Italy.; D.G. is supported by the Italian
Space Agency under the Contract AMS-02.ASI/AMS-02 n.I/035/07/0. He also
thanks the Dipartimento di Fisica dell'Universita di Padova and
UniverseNet EU Network under Contract No. MRTN-CF-2006-035863 for
partial financial support. S.P. is partly supported by US DoE Contract
DEFG02-04ER41268 and by NSF Grant PHY-0757911. E.D.B. and T.K. are
Supported by US DoE Contract DE-AC02-76-SF00515.; We thank the anonymous
referee for several useful comments.
NR 73
TC 173
Z9 173
U1 0
U2 4
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0927-6505
EI 1873-2852
J9 ASTROPART PHYS
JI Astropart Phys.
PD SEP
PY 2009
VL 32
IS 2
BP 140
EP 151
DI 10.1016/j.astropartphys.2009.07.003
PG 12
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 513RL
UT WOS:000271340800008
ER
PT J
AU Offner, SSR
Klein, RI
McKee, CF
Krumholz, MR
AF Offner, Stella S. R.
Klein, Richard I.
McKee, Christopher F.
Krumholz, Mark R.
TI THE EFFECTS OF RADIATIVE TRANSFER ON LOW-MASS STAR FORMATION
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE hydrodynamics; ISM: clouds; ISM: kinematics and dynamics; methods:
numerical; radiative transfer; stars: formation; turbulence
ID MOLECULAR CLOUD CORES; MAGNETOCENTRIFUGALLY DRIVEN FLOWS;
SELF-GRAVITATIONAL HYDRODYNAMICS; SMOOTHED PARTICLE HYDRODYNAMICS;
ADAPTIVE MESH REFINEMENT; HIGH ACCRETION RATES; PROTOSTELLAR CORES;
MAGNETIC-FIELDS; CLUSTER FORMATION; STELLAR MULTIPLICITY
AB Forming stars emit a substantial amount of radiation into their natal environment. We use ORION, an adaptive mesh refinement (AMR) three-dimensional gravito-radiation-hydrodyanics code, to simulate low-mass star formation in a turbulent molecular cloud. We compare the distributions of stellar masses, accretion rates, and temperatures in the cases with and without radiative transfer, and we demonstrate that radiative feedback has a profound effect on accretion, multiplicity, and mass by reducing the number of stars formed and the total rate at which gas turns into stars. We also show that once the star formation reaches a steady state, protostellar radiation is by far the dominant source of energy in the simulation, exceeding viscous dissipation and compressional heating by at least an order of magnitude. Calculations that omit radiative feedback from protstars significantly underestimate the gas temperature and the strength of this effect. Although heating from protostars is mainly confined to the protostellar cores, we find that it is sufficient to suppress disk fragmentation that would otherwise result in very low-mass companions or brown dwarfs. We demonstrate that the mean protostellar accretion rate increases with the final stellar mass so that the star formation time is only a weak function of mass.
C1 [Offner, Stella S. R.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Klein, Richard I.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA.
[Klein, Richard I.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[McKee, Christopher F.] Univ Calif Berkeley, Dept Phys & Astron, Berkeley, CA 94720 USA.
[Krumholz, Mark R.] Univ Calif Santa Cruz, Dept Astron, Santa Cruz, CA 95064 USA.
RP Offner, SSR (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM soffner@berkeley.edu
OI Krumholz, Mark/0000-0003-3893-854X
FU US Department of Energy [B-542762, DE-AC52-07NA 27344]; National Science
Foundation [PHY05-51164, AST-0807739, AST-0606831]; NASA, Spitzer Space
Telescope Theoretical Research Program; NSF San Diego Supercomputing
Center through LRAC program [UCB267]; National Energy Research
Scientific Computer Center; U.S. Department of Energy, ERCAP [80325]
FX The authors acknowledge helpful discussions with Andrew Cunningham and
Kaitlin Kratter. Support for this work was provided by the US Department
of Energy at the Lawrence Livermore National Laboratory under contracts
B-542762 (S. S. R. O.) and DE-AC52-07NA 27344 (R. I. K.) and the
National Science Foundation under Grant PHY05-51164 (C. F. M. and S. S.
R. O.); the National Science Foundation grant AST-0807739 and NASA
through the Spitzer Space Telescope Theoretical Research Program,
provided by a contract issued by the Jet Propulsion Laboratory (M. R.
K.); the National Science Foundation grant AST-0606831 (C.F.M and
S.S.R.O.). Computational resources were provided by the NSF San Diego
Supercomputing Center through LRAC program grant UCB267; and the
National Energy Research Scientific Computer Center, which is supported
by the Office of Science of the U.S. Department of Energy under contract
number DE-AC03-76SF00098, through ERCAP grant 80325.
NR 91
TC 156
Z9 156
U1 0
U2 4
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD SEP
PY 2009
VL 703
IS 1
BP 131
EP 149
DI 10.1088/0004-637X/703/1/131
PG 19
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 492AE
UT WOS:000269625000016
ER
PT J
AU Acciari, VA
Aliu, E
Aune, T
Beilicke, M
Benbow, W
Bottcher, M
Bradbury, SM
Buckley, JH
Bugaev, V
Butt, Y
Cannon, A
Celik, O
Cesarini, A
Chow, YC
Ciupik, L
Cogan, P
Colin, P
Cui, W
Dickherber, R
Duke, C
Falcone, AD
Fegan, SJ
Finley, JP
Finnegan, G
Fortin, P
Fortson, L
Furniss, A
Gall, D
Gillanders, GH
Grube, J
Guenette, R
Gyuk, G
Hanna, D
Holder, J
Horan, D
Hui, CM
Humensky, TB
Kaaret, P
Karlsson, N
Kertzman, M
Kieda, D
Kildea, J
Konopelko, A
Krawczynski, H
Krennrich, F
Lang, MJ
LeBohec, S
Maier, G
McCann, A
Millis, J
Moriarty, P
Ong, RA
Otte, AN
Pandel, D
Perkins, JS
Pichel, A
Pohl, M
Quinn, J
Ragan, K
Reyes, LC
Reynolds, PT
Roache, E
Rose, HJ
Schroedter, M
Sembroski, GH
Smith, AW
Steele, D
Swordy, SP
Theiling, M
Toner, JA
Varlotta, A
Vincent, S
Wakely, SP
Ward, JE
Weekes, TC
Weinstein, A
Weisgarber, T
Williams, DA
Wissel, S
Zitzer, B
Perez, ID
Ibarra, A
Anderhub, PRH
Antonelli, LA
Antoranz, P
Backes, M
Baixeras, C
Balestra, S
Barrio, JA
Bastieri, D
Gonzalez, JB
Becker, JK
Bednarek, W
Berger, K
Bernardini, E
Biland, A
Bock, RK
Bonnoli, G
Bordas, P
Tridon, DB
Bosch-Ramon, V
Bose, D
Braun, I
Bretz, T
Britvitch, I
Camara, M
Carmona, E
Carosi, A
Commichau, S
Contreras, JL
Cortina, J
Costado, MT
Covino, S
Curtef, V
Dazzi, F
De Angelis, A
Del Pozo, ED
Mendez, CD
De Los Reyes, R
De Lotto, B
De Maria, M
De Sabata, F
Dominguez, A
Dorner, D
Doro, M
Elsaesser, D
Errando, M
Ferenc, D
Fernandez, E
Firpo, R
Fonseca, MV
Font, L
Galante, N
Lopez, RJ
Garczarczyk, M
Gaug, M
Goebel, F
Hadasch, D
Hayashida, M
Herrero, A
Hildebrand, D
Hohne-Monch, D
Hose, J
Hsu, CC
Jogler, T
Kranich, D
La Barbera, A
Laille, A
Leonardo, E
Lindfors, E
Lombardi, S
Longo, F
Lopez, M
Lorenz, E
Majumdar, P
Maneva, G
Mankuzhiyil, N
Mannheim, K
Maraschi, L
Mariotti, M
Martinez, M
Mazin, D
Meucci, M
Miranda, JM
Mirzoyan, R
Miyamoto, H
Moldon, J
Moles, M
Moralejo, A
Nieto, D
Nilsson, K
Ninkovic, J
Orito, R
Oya, I
Paoletti, R
Paredes, JM
Pasanen, M
Pascoli, D
Pauss, F
Pegna, RG
Perez-Torres, MA
Persic, M
Peruzzo, L
Prada, F
Prandini, E
Puchades, N
Reichardt, I
Rhode, W
Ribo, M
Rico, J
Rissi, M
Robert, A
Rugamer, S
Saggion, A
Saito, TY
Salvati, M
Sanchez-Conde, M
Satalecka, K
Scalzotto, V
Scapin, V
Schweizer, T
Shayduk, M
Shore, SN
Sidro, N
Sierpowska-Bartosik, A
Silanpaa, A
Sitarek, J
Sobczynska, D
Spanier, F
Spiro, S
Stamerra, A
Stark, LS
Takalo, L
Tavecchio, F
Temnikov, P
Tescaro, D
Teshima, M
Tluczykont, M
Torres, DF
Turini, N
Vankov, H
Wagner, RM
Zabalza, V
Zandanel, F
Zanin, R
Zapatero, J
AF Acciari, V. A.
Aliu, E.
Aune, T.
Beilicke, M.
Benbow, W.
Boettcher, M.
Bradbury, S. M.
Buckley, J. H.
Bugaev, V.
Butt, Y.
Cannon, A.
Celik, O.
Cesarini, A.
Chow, Y. C.
Ciupik, L.
Cogan, P.
Colin, P.
Cui, W.
Dickherber, R.
Duke, C.
Falcone, A. D.
Fegan, S. J.
Finley, J. P.
Finnegan, G.
Fortin, P.
Fortson, L.
Furniss, A.
Gall, D.
Gillanders, G. H.
Grube, J.
Guenette, R.
Gyuk, G.
Hanna, D.
Holder, J.
Horan, D.
Hui, C. M.
Humensky, T. B.
Kaaret, P.
Karlsson, N.
Kertzman, M.
Kieda, D.
Kildea, J.
Konopelko, A.
Krawczynski, H.
Krennrich, F.
Lang, M. J.
LeBohec, S.
Maier, G.
McCann, A.
Millis, J.
Moriarty, P.
Ong, R. A.
Otte, A. N.
Pandel, D.
Perkins, J. S.
Pichel, A.
Pohl, M.
Quinn, J.
Ragan, K.
Reyes, L. C.
Reynolds, P. T.
Roache, E.
Rose, H. J.
Schroedter, M.
Sembroski, G. H.
Smith, A. W.
Steele, D.
Swordy, S. P.
Theiling, M.
Toner, J. A.
Varlotta, A.
Vincent, S.
Wakely, S. P.
Ward, J. E.
Weekes, T. C.
Weinstein, A.
Weisgarber, T.
Williams, D. A.
Wissel, S.
Zitzer, B.
de la Calle Perez, I.
Ibarra, A.
Anderhub, P. Rodriguez H.
Antonelli, L. A.
Antoranz, P.
Backes, M.
Baixeras, C.
Balestra, S.
Barrio, J. A.
Bastieri, D.
Becerra Gonzalez, J.
Becker, J. K.
Bednarek, W.
Berger, K.
Bernardini, E.
Biland, A.
Bock, R. K.
Bonnoli, G.
Bordas, P.
Tridon, D. Borla
Bosch-Ramon, V.
Bose, D.
Braun, I.
Bretz, T.
Britvitch, I.
Camara, M.
Carmona, E.
Carosi, A.
Commichau, S.
Contreras, J. L.
Cortina, J.
Costado, M. T.
Covino, S.
Curtef, V.
Dazzi, F.
De Angelis, A.
De Cea Del Pozo, E.
Delgado Mendez, C.
De Los Reyes, R.
De Lotto, B.
De Maria, M.
De Sabata, F.
Dominguez, A.
Dorner, D.
Doro, M.
Elsaesser, D.
Errando, M.
Ferenc, D.
Fernandez, E.
Firpo, R.
Fonseca, M. V.
Font, L.
Galante, N.
Garcia Lopez, R. J.
Garczarczyk, M.
Gaug, M.
Goebel, F.
Hadasch, D.
Hayashida, M.
Herrero, A.
Hildebrand, D.
Hoehne-Moench, D.
Hose, J.
Hsu, C. C.
Jogler, T.
Kranich, D.
La Barbera, A.
Laille, A.
Leonardo, E.
Lindfors, E.
Lombardi, S.
Longo, F.
Lopez, M.
Lorenz, E.
Majumdar, P.
Maneva, G.
Mankuzhiyil, N.
Mannheim, K.
Maraschi, L.
Mariotti, M.
Martinez, M.
Mazin, D.
Meucci, M.
Miranda, J. M.
Mirzoyan, R.
Miyamoto, H.
Moldon, J.
Moles, M.
Moralejo, A.
Nieto, D.
Nilsson, K.
Ninkovic, J.
Orito, R.
Oya, I.
Paoletti, R.
Paredes, J. M.
Pasanen, M.
Pascoli, D.
Pauss, F.
Pegna, R. G.
Perez-Torres, M. A.
Persic, M.
Peruzzo, L.
Prada, F.
Prandini, E.
Puchades, N.
Reichardt, I.
Rhode, W.
Ribo, M.
Rico, J.
Rissi, M.
Robert, A.
Ruegamer, S.
Saggion, A.
Saito, T. Y.
Salvati, M.
Sanchez-Conde, M.
Satalecka, K.
Scalzotto, V.
Scapin, V.
Schweizer, T.
Shayduk, M.
Shore, S. N.
Sidro, N.
Sierpowska-Bartosik, A.
Silanpaa, A.
Sitarek, J.
Sobczynska, D.
Spanier, F.
Spiro, S.
Stamerra, A.
Stark, L. S.
Takalo, L.
Tavecchio, F.
Temnikov, P.
Tescaro, D.
Teshima, M.
Tluczykont, M.
Torres, D. F.
Turini, N.
Vankov, H.
Wagner, R. M.
Zabalza, V.
Zandanel, F.
Zanin, R.
Zapatero, J.
CA VERITAS Collaboration
MAGIC Collaboration
TI SIMULTANEOUS MULTIWAVELENGTH OBSERVATIONS OF MARKARIAN 421 DURING
OUTBURST
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE BL Lacertae objects: individual (Markarian 421); galaxies: active; gamma
rays: observations; radiation mechanisms: non-thermal; X-rays: galaxies
ID ACTIVE GALAXY MARKARIAN-421; RAY SPECTRAL VARIABILITY; XMM-NEWTON;
CORRELATED VARIABILITY; MAGIC TELESCOPE; GALACTIC NUCLEI; TEV PHOTONS;
GAMMA-RAYS; ENERGY; RADIATION
AB We report on the results of two coordinated multiwavelength campaigns that focused on the blazar Markarian 421 during its 2006 and 2008 outbursts. These campaigns obtained UV and X-ray data using the XMM-Newton satellite, while the gamma-ray data were obtained utilizing three imaging atmospheric Cerenkov telescopes, the Whipple 10 m telescope and VERITAS, both based in Arizona, as well as the MAGIC telescope, based on La Palma in the Canary Islands. The coordinated effort between the gamma-ray groups allowed for truly simultaneous data in UV/X-ray/gamma-ray wavelengths during a significant portion of the XMM-Newton observations. This simultaneous coverage allowed for a reliable search for correlations between UV, X-ray, and gamma-ray variability over the course of the observations. Investigations of spectral hysteresis and modeling of the spectral energy distributions are also presented.
C1 [Acciari, V. A.; Benbow, W.; Kildea, J.; Perkins, J. S.; Roache, E.; Theiling, M.; Weekes, T. C.] Harvard Smithsonian Ctr Astrophys, Fred Lawrence Whipple Observ, Amado, AZ 85645 USA.
[Aliu, E.; Holder, J.] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA.
[Aliu, E.; Holder, J.] Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA.
[Aune, T.; Furniss, A.; Otte, A. N.; Williams, D. A.] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA.
[Aune, T.; Furniss, A.; Otte, A. N.; Williams, D. A.] Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA.
[Beilicke, M.; Buckley, J. H.; Bugaev, V.; Dickherber, R.; Finley, J. P.; Krawczynski, H.] Washington Univ, Dept Phys, St Louis, MO 63130 USA.
[Boettcher, M.] Ohio Univ, Dept Phys & Astron, Inst Astrophys, Athens, OH 45701 USA.
[Bradbury, S. M.; Rose, H. J.] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England.
[Butt, Y.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
[Cannon, A.; Grube, J.; Quinn, J.; Ward, J. E.] Natl Univ Ireland Univ Coll Dublin, Sch Phys, Dublin 4, Ireland.
[Celik, O.; Chow, Y. C.; Fegan, S. J.; Ong, R. A.; Weinstein, A.] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA.
[Cesarini, A.; Gillanders, G. H.; Lang, M. J.; Toner, J. A.] Natl Univ Ireland, Sch Phys, Galway, Ireland.
[Ciupik, L.; Fortson, L.; Gyuk, G.; Karlsson, N.; Steele, D.] Adler Planetarium & Astron Museum, Dept Astron, Chicago, IL 60605 USA.
[Cogan, P.; Guenette, R.; Hanna, D.; Maier, G.; McCann, A.; Ragan, K.] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada.
[Colin, P.; Finnegan, G.; Hui, C. M.; Kieda, D.; LeBohec, S.; Vincent, S.] Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA.
[Cui, W.; Finley, J. P.; Gall, D.; Sembroski, G. H.; Varlotta, A.; Zitzer, B.] Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA.
[Duke, C.] Grinnell Coll, Dept Phys, Grinnell, IA 50112 USA.
[Falcone, A. D.] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA.
[Fortin, P.] Columbia Univ, Barnard Coll, Dept Phys & Astron, New York, NY 10027 USA.
[Horan, D.] Ecole Polytech, Lab Leprince Ringuet, CNRS, IN2P3, F-91128 Palaiseau, France.
[Humensky, T. B.; Swordy, S. P.; Wakely, S. P.; Weisgarber, T.; Wissel, S.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
[Kaaret, P.; Pandel, D.] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA.
[Kertzman, M.] Depauw Univ, Dept Phys & Astron, Greencastle, IN 46135 USA.
[Konopelko, A.] Pittsburg State Univ, Dept Phys, Pittsburg, KS 66762 USA.
[Krennrich, F.; Pohl, M.; Schroedter, M.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Millis, J.] Anderson Univ, Dept Phys, Anderson, IN 46012 USA.
[Moriarty, P.] Galway Mayo Inst Technol, Dept Life & Phys Sci, Galway, Ireland.
[Pichel, A.] Inst Astron & Fis Espacio, RA-1428 Buenos Aires, DF, Argentina.
[Reyes, L. C.] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
[Reynolds, P. T.] Cork Inst Technol, Dept Appl Phys & Instrumentat, Cork, Ireland.
[Smith, A. W.] Argonne Natl Lab, Argonne, IL 60439 USA.
[de la Calle Perez, I.; Ibarra, A.] ESA, European Space Astron Ctr, XMM Newton SOC, Madrid 28691, Spain.
[Anderhub, P. Rodriguez H.; Biland, A.; Braun, I.; Britvitch, I.; Commichau, S.; Dorner, D.; Hildebrand, D.; Kranich, D.; Lorenz, E.; Pauss, F.; Rissi, M.; Stark, L. S.] Swiss Fed Inst Technol, CH-8093 Zurich, Switzerland.
[Antonelli, L. A.; Carosi, A.; Covino, S.; La Barbera, A.; Maraschi, L.; Salvati, M.; Spiro, S.; Tavecchio, F.] Natl Inst Astrophys, INAF, I-00136 Rome, Italy.
[Antoranz, P.; Balestra, S.; Barrio, J. A.; Bose, D.; Camara, M.; Contreras, J. L.; De Los Reyes, R.; Fonseca, M. V.; Miranda, J. M.; Nieto, D.; Oya, I.] Univ Complutense, E-28040 Madrid, Spain.
[Backes, M.; Becker, J. K.; Curtef, V.; Rhode, W.] Tech Univ Dortmund, D-44221 Dortmund, Germany.
[Baixeras, C.; Font, L.; Hadasch, D.; Robert, A.; Zapatero, J.] Univ Autonoma Barcelona, E-08193 Barcelona, Spain.
[Bastieri, D.; Bock, R. K.; Doro, M.; Lombardi, S.; Lopez, M.; Mariotti, M.; Pascoli, D.; Peruzzo, L.; Prandini, E.; Saggion, A.; Scalzotto, V.] Univ Padua, I-35131 Padua, Italy.
[Bastieri, D.; Bock, R. K.; Doro, M.; Lombardi, S.; Lopez, M.; Mariotti, M.; Pascoli, D.; Peruzzo, L.; Prandini, E.; Saggion, A.; Scalzotto, V.] Ist Nazl Fis Nucl, I-35131 Padua, Italy.
[Becerra Gonzalez, J.; Costado, M. T.; Delgado Mendez, C.; Garcia Lopez, R. J.; Gaug, M.; Herrero, A.] Inst Astrofis Canarias, E-38200 Tenerife, Spain.
[Bednarek, W.; Berger, K.; Sitarek, J.; Sobczynska, D.] Univ Lodz, PL-90236 Lodz, Poland.
[Bernardini, E.; Majumdar, P.; Satalecka, K.; Tluczykont, M.] DESY, D-15738 Zeuthen, Germany.
[Bock, R. K.; Tridon, D. Borla; Carmona, E.; Galante, N.; Goebel, F.; Hayashida, M.; Hose, J.; Hsu, C. C.; Jogler, T.; Lorenz, E.; Mirzoyan, R.; Miyamoto, H.; Ninkovic, J.; Orito, R.; Saito, T. Y.; Schweizer, T.; Shayduk, M.; Sitarek, J.; Teshima, M.; Wagner, R. M.] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany.
[Bonnoli, G.; Leonardo, E.; Meucci, M.; Paoletti, R.; Pegna, R. G.; Stamerra, A.; Turini, N.] Univ Siena, I-53100 Siena, Italy.
[Bonnoli, G.; Leonardo, E.; Meucci, M.; Paoletti, R.; Pegna, R. G.; Stamerra, A.; Turini, N.] INFN Pisa, I-53100 Siena, Italy.
[Bordas, P.; Bosch-Ramon, V.; Moldon, J.; Paredes, J. M.; Ribo, M.; Zabalza, V.] Univ Barcelona, IEEC, ICC, E-08028 Barcelona, Spain.
[Bretz, T.; Elsaesser, D.; Hoehne-Moench, D.; Mannheim, K.; Ruegamer, S.; Spanier, F.] Univ Wurzburg, D-97074 Wurzburg, Germany.
[Cortina, J.; Errando, M.; Fernandez, E.; Firpo, R.; Garczarczyk, M.; Martinez, M.; Mazin, D.; Moralejo, A.; Puchades, N.; Reichardt, I.; Rico, J.; Sidro, N.; Tescaro, D.; Zanin, R.] INAF, E-08193 Barcelona, Spain.
[Costado, M. T.; Garcia Lopez, R. J.; Herrero, A.] Univ La Laguna, Dept Astrofis, E-38206 Tenerife, Spain.
[Dazzi, F.; De Angelis, A.; De Lotto, B.; De Maria, M.; De Sabata, F.; Longo, F.; Mankuzhiyil, N.; Persic, M.; Scapin, V.] Univ Udine, I-33100 Udine, Italy.
[Dazzi, F.; De Angelis, A.; De Lotto, B.; De Maria, M.; De Sabata, F.; Longo, F.; Mankuzhiyil, N.; Persic, M.; Scapin, V.] INFN Trieste, I-33100 Udine, Italy.
[De Cea Del Pozo, E.; Sierpowska-Bartosik, A.; Torres, D. F.] CSIC, IEEC, Inst Ciencies Espai, E-08193 Barcelona, Spain.
[Dominguez, A.; Moles, M.; Perez-Torres, M. A.; Prada, F.; Sanchez-Conde, M.; Zandanel, F.] CSIC, Inst Astrofis Andalucia, E-18080 Granada, Spain.
[Ferenc, D.; Laille, A.] Univ Calif Davis, Davis, CA 95616 USA.
[Lindfors, E.; Nilsson, K.; Pasanen, M.; Silanpaa, A.; Takalo, L.] Turku Univ, Tuorla Observ, FI-21500 Piikkio, Finland.
[Maneva, G.; Temnikov, P.; Vankov, H.] Inst Nucl Energy Res, BG-1784 Sofia, Bulgaria.
[Persic, M.] Osserv Astron Trieste, INAF, I-34143 Trieste, Italy.
[Persic, M.] Ist Nazl Fis Nucl, I-34143 Trieste, Italy.
[Rico, J.; Torres, D. F.] ICREA, E-08010 Barcelona, Spain.
[Shore, S. N.] Univ Pisa, I-56126 Pisa, Italy.
[Shore, S. N.] INFN Pisa, I-56126 Pisa, Italy.
RP Cui, W (reprint author), Harvard Smithsonian Ctr Astrophys, Fred Lawrence Whipple Observ, Amado, AZ 85645 USA.
EM cui@physics.purdue.edu; dgall@physics.purdue.edu
RI Delgado, Carlos/K-7587-2014; Nieto, Daniel/J-7250-2015; Miranda, Jose
Miguel/F-2913-2013; Contreras Gonzalez, Jose Luis/K-7255-2014; Maneva,
Galina/L-7120-2016; Backes, Michael/N-5126-2016; Torres,
Diego/O-9422-2016; Reichardt, Ignasi/P-7478-2016; Temnikov,
Petar/L-6999-2016; Barrio, Juan/L-3227-2014; Cortina, Juan/C-2783-2017;
Braun, Isabel/C-9373-2012; Antoranz, Pedro/H-5095-2015; Mannheim,
Karl/F-6705-2012; Doro, Michele/F-9458-2012; Tjus, Julia/G-8145-2012;
Rico, Javier/K-8004-2014; Fernandez, Ester/K-9734-2014; GAug,
Markus/L-2340-2014; Lopez Moya, Marcos/L-2304-2014; Font,
Lluis/L-4197-2014; Fernandez, Enrique/L-5387-2014; Moralejo Olaizola,
Abelardo/M-2916-2014; Ribo, Marc/B-3579-2015; Fonseca Gonzalez, Maria
Victoria/I-2004-2015;
OI Delgado, Carlos/0000-0002-7014-4101; Nieto, Daniel/0000-0003-3343-0755;
Miranda, Jose Miguel/0000-0002-1472-9690; Contreras Gonzalez, Jose
Luis/0000-0001-7282-2394; Backes, Michael/0000-0002-9326-6400; Torres,
Diego/0000-0002-1522-9065; Reichardt, Ignasi/0000-0003-3694-3820;
Temnikov, Petar/0000-0002-9559-3384; Barrio, Juan/0000-0002-0965-0259;
Cortina, Juan/0000-0003-4576-0452; Braun, Isabel/0000-0002-9389-0502;
Antoranz, Pedro/0000-0002-3015-3601; Doro, Michele/0000-0001-9104-3214;
Rico, Javier/0000-0003-4137-1134; GAug, Markus/0000-0001-8442-7877;
Lopez Moya, Marcos/0000-0002-8791-7908; Font, Lluis/0000-0003-2109-5961;
Fernandez, Enrique/0000-0002-6405-9488; Moralejo Olaizola,
Abelardo/0000-0002-1344-9080; Costado, M. Teresa/0000-0002-2672-4061; LA
BARBERA, ANTONINO/0000-0002-5880-8913; Cui, Wei/0000-0002-6324-5772;
Cesarini, Andrea/0000-0002-8611-8610; leonardo,
elvira/0000-0003-0271-7673; de los Reyes Lopez,
Raquel/0000-0003-0485-9552; Fonseca Gonzalez, Maria
Victoria/0000-0003-2235-0725; De Lotto, Barbara/0000-0003-3624-4480;
Hsu, Ching-Cheng/0000-0001-9406-2023; De Angelis,
Alessandro/0000-0002-3288-2517; Persic, Massimo/0000-0003-1853-4900;
Ward, John E/0000-0003-1973-0794; Spanier, Felix/0000-0001-6802-4744;
Dominguez, Alberto/0000-0002-3433-4610; Bastieri,
Denis/0000-0002-6954-8862; Ribo, Marc/0000-0002-9931-4557; Pandel,
Dirk/0000-0003-2085-5586; Lang, Mark/0000-0003-4641-4201; Covino,
Stefano/0000-0001-9078-5507; Bordas, Pol/0000-0002-0266-8536; Paredes,
Josep M./0000-0002-1566-9044; Oya, Igor/0000-0002-3881-9324; Turini,
Nicola/0000-0002-9395-5230; Bonnoli, Giacomo/0000-0003-2464-9077; Mazin,
Daniel/0000-0002-2010-4005; Stamerra, Antonio/0000-0002-9430-5264;
Prandini, Elisa/0000-0003-4502-9053; Becerra Gonzalez,
Josefa/0000-0002-6729-9022
FU U.S. Department of Energy; U.S. National Science Foundation; Smithsonian
Institution; NSERC in Canada; Science Foundation Ireland; STFC, U.K;
NASA [NNX06AB96G, NNX08AD76G, NNX08AX53G]; ETH [TH 34/043]; Polish
MNiSzW [N N203 390834]; Helmholtz Gemeinschaft
FX The VERITAS research was supported by grants from the U.S. Department of
Energy, the U.S. National Science Foundation and the Smithsonian
Institution, by NSERC in Canada, by Science Foundation Ireland, and by
STFC in the U.K. We acknowledge the excellent work of the technical
support staff at the FLWO and the collaborating institutions in the
construction and operation of the instrument. D. G. and W. C. wish to
acknowledge support by NASA through grants NNX06AB96G, NNX08AD76G, and
NNX08AX53G. The MAGIC Collaboration thanks the Instituto de Astrofisica
de Canarias for the excellent working conditions at the Observatorio del
Roque de los Muchachos in La Palma. The support of the German BMBF and
MPG, the Italian INFN, and Spanish MCINN is gratefully acknowledged.
This work was also supported by ETH Research Grant TH 34/043, by the
Polish MNiSzW Grant N N203 390834, and by the YIP of the Helmholtz
Gemeinschaft. Facilities: MAGIC, VERITAS, FLWO:10m, XMM
NR 46
TC 31
Z9 31
U1 1
U2 9
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD SEP
PY 2009
VL 703
IS 1
BP 169
EP 178
DI 10.1088/0004-637X/703/1/169
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 492AE
UT WOS:000269625000019
ER
PT J
AU Huang, L
Liu, SM
Shen, ZQ
Yuan, YF
Cai, MJ
Li, H
Fryer, CL
AF Huang, Lei
Liu, Siming
Shen, Zhi-Qiang
Yuan, Ye-Fei
Cai, Mike J.
Li, Hui
Fryer, Christopher L.
TI POLARIZED EMISSION OF SAGITTARIUS A
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE black hole physics; Galaxy: center; plasmas; polarization; radiative
transfer; submillimeter
ID SUPERMASSIVE BLACK-HOLE; COVARIANT MAGNETOIONIC THEORY; NEAR-INFRARED
FLARES; A-ASTERISK; GALACTIC-CENTER; CIRCULAR-POLARIZATION;
SUBMILLIMETER EMISSION; SYNCHROTRON RADIATION; LINEAR-POLARIZATION;
ACCRETION FLOW
AB We explore the parameter space of the two-temperature pseudo-Newtonian Keplerian accretion flow model for the millimeter and shorter wavelength emission from Sagittarius A*. A general relativistic (GR) ray-tracing code is used to treat the radiative transfer of polarized synchrotron emission from the flow. The synchrotron self-Comptonization and bremsstrahlung emission components are also included. It is shown that the model can readily account for the millimeter to submillimeter emission characteristics with an accretion rate of similar to 6 x 10(17) g s(-1) and an inclination angle of similar to 40 degrees. However, the corresponding model-predicted near-infrared (NIR) and X-ray fluxes are more than one order of magnitude lower than the observed "quiescent" state values. While the extended quiescent-state X-ray emission has been attributed to thermal emission from the large-scale accretion flow, the NIR emission and flares are likely dominated by emission regions either within the last stable orbit of a Schwarzschild black hole or associated with outflows. With the viscous parameter derived from numerical simulations, there is still a degeneracy between the electron heating rate and the magnetic parameter. A fully GR treatment with the black hole spin incorporated will resolve these issues.
C1 [Huang, Lei; Yuan, Ye-Fei] Univ Sci & Technol China, Key Lab Res Galaxies & Cosmol, Chinese Acad Sci, Hefei 230026, Peoples R China.
[Huang, Lei; Shen, Zhi-Qiang] Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China.
[Huang, Lei; Cai, Mike J.] Acad Sinica, Inst Astron & Astrophys, Taipei 106, Taiwan.
[Liu, Siming] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland.
[Li, Hui; Fryer, Christopher L.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Fryer, Christopher L.] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA.
RP Huang, L (reprint author), Univ Sci & Technol China, Key Lab Res Galaxies & Cosmol, Chinese Acad Sci, Hefei 230026, Peoples R China.
EM mlhuang@ustc.edu.cn; sliu@astro.gla.ac.uk; zshen@shao.ac.cn;
yfyuan@ustc.edu.cn; mike@asiaa.sinica.edu.tw; hli@lanl.gov;
fryer@lanl.gov
RI liu, siming/B-5389-2011
FU National Natural Science Foundation of China [10573029, 10625314,
10633010, 10821302, 10733010, 10673010, 10573016]; National Key Basic
Research Development Program of China [2007CB815405, 2009CB824800];
Marie Curie Fellowship [MTRN-CT2006-035484]; LANL; Knowledge Innovation
Program of the Chinese Academy of Sciences [KJCX2-YW-T03]; Program of
Shanghai Subject Chief Scientist [06XD14024]; Program for New Century
Excellent Talents in University
FX This work was supported in part by the National Natural Science
Foundation of China (grants 10573029, 10625314, 10633010, 10821302,
10733010, 10673010, and 10573016) and the National Key Basic Research
Development Program of China (No. 2007CB815405 and 2009CB824800). S. L.
is supported by a Marie Curie Fellowship under the EC's SOLAIRE Network
at the University of Glasgow (MTRN-CT2006-035484) and an IGPP grant from
LANL. Z. Q. S. is supported by the Knowledge Innovation Program of the
Chinese Academy of Sciences (Grant No. KJCX2-YW-T03) and the Program of
Shanghai Subject Chief Scientist (06XD14024). Y. F. Y. is supported by
Program for New Century Excellent Talents in University. L. H. thanks
G.-X. Li for his assistance in programming.
NR 56
TC 18
Z9 18
U1 0
U2 4
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD SEP
PY 2009
VL 703
IS 1
BP 557
EP 568
DI 10.1088/0004-637X/703/1/557
PG 12
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 492AE
UT WOS:000269625000045
ER
PT J
AU Rozo, E
Rykoff, ES
Koester, BP
McKay, T
Hao, JG
Evrard, A
Wechsler, RH
Hansen, S
Sheldon, E
Johnston, D
Becker, M
Annis, J
Bleem, L
Scranton, R
AF Rozo, Eduardo
Rykoff, Eli S.
Koester, Benjamin P.
McKay, Timothy
Hao, Jiangang
Evrard, August
Wechsler, Risa H.
Hansen, Sarah
Sheldon, Erin
Johnston, David
Becker, Matthew
Annis, James
Bleem, Lindsey
Scranton, Ryan
TI IMPROVEMENT OF THE RICHNESS ESTIMATES OF maxBCG CLUSTERS
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE cosmology: observations; methods: data analysis
ID DIGITAL SKY SURVEY; FLUX-LIMITED SAMPLE; X-RAY LUMINOSITY; SPECTROSCOPIC
TARGET SELECTION; NEAR-INFRARED PROPERTIES; ADAPTIVE MATCHED-FILTER;
GALAXY CLUSTERS; MASS FUNCTION; VELOCITY DISPERSION; MAGNITUDE RELATION
AB Minimizing the scatter between cluster mass and accessible observables is an important goal for cluster cosmology. In this work, we introduce a new matched filter richness estimator, and test its performance using the maxBCG cluster catalog. Our new estimator significantly reduces the variance in the L(X)-richness relation, from sigma(ln) (2)(LX) = (0.86 +/- 0.02)(2) to sigma(ln) (2)(LX) = (0.69 +/- 0.02)(2). Relative to the maxBCG richness estimate, it also removes the strong redshift dependence of the L(X)-richness scaling relations, and is significantly more robust to photometric and redshift errors. These improvements are largely due to the better treatment of galaxy color data. We also demonstrate the scatter in the L(X)-richness relation depends on the aperture used to estimate cluster richness, and introduce a novel approach for optimizing said aperture which can easily be generalized to other mass tracers.
C1 [Rozo, Eduardo] Ohio State Univ, CCAPP, Columbus, OH 43210 USA.
[Rykoff, Eli S.] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA.
[Koester, Benjamin P.; Hansen, Sarah; Becker, Matthew; Bleem, Lindsey] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA.
[Koester, Benjamin P.; Hansen, Sarah; Becker, Matthew] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
[McKay, Timothy; Hao, Jiangang; Evrard, August] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA.
[McKay, Timothy; Evrard, August] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA.
[McKay, Timothy; Evrard, August] Michigan Ctr Theoret Phys, Ann Arbor, MI 48109 USA.
[Wechsler, Risa H.] Stanford Univ, Dept Phys, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA.
[Wechsler, Risa H.] Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94305 USA.
[Sheldon, Erin] NYU, Dept Phys, Ctr Cosmol & Particle Phys, New York, NY 10003 USA.
[Johnston, David] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.
[Annis, James] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Scranton, Ryan] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA.
RP Rozo, E (reprint author), Ohio State Univ, CCAPP, Columbus, OH 43210 USA.
RI Hao, Jiangang/G-3954-2011; McKay, Timothy/C-1501-2009;
OI McKay, Timothy/0000-0001-9036-6150; Becker, Matthew/0000-0001-7774-2246;
Evrard, August/0000-0002-4876-956X; Hao, Jiangang/0000-0003-0502-7571
FU U. S. Department of Energy [DE-AC02-76SF00515, DE-FG02-95ER40899];
Terman Fellowship; NSF [AST 0807304, AST-0708150]; Alfred P. Sloan
Foundation; National Aeronautics and Space Administration; Japanese
Monbukagakusho; Max Planck Society
FX Funding for the creation and distribution of the SDSS Archive has been
provided by the Alfred P. Sloan Foundation, the Participating
Institutions, the National Aeronautics and Space Administration, the
National Science Foundation, the U. S. Department of Energy, the
Japanese Monbukagakusho, and the Max Planck Society. The SDSS Web site
is http://www.sdss.org/.
NR 97
TC 45
Z9 45
U1 0
U2 3
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD SEP
PY 2009
VL 703
IS 1
BP 601
EP 613
DI 10.1088/0004-637X/703/1/601
PG 13
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 492AE
UT WOS:000269625000048
ER
PT J
AU Giodini, S
Pierini, D
Finoguenov, A
Pratt, GW
Boehringer, H
Leauthaud, A
Guzzo, L
Aussel, H
Bolzonella, M
Capak, P
Elvis, M
Hasinger, G
Ilbert, O
Kartaltepe, JS
Koekemoer, AM
Lilly, SJ
Massey, R
McCracken, HJ
Rhodes, J
Salvato, M
Sanders, DB
Scoville, NZ
Sasaki, S
Smolcic, V
Taniguchi, Y
Thompson, D
AF Giodini, S.
Pierini, D.
Finoguenov, A.
Pratt, G. W.
Boehringer, H.
Leauthaud, A.
Guzzo, L.
Aussel, H.
Bolzonella, M.
Capak, P.
Elvis, M.
Hasinger, G.
Ilbert, O.
Kartaltepe, J. S.
Koekemoer, A. M.
Lilly, S. J.
Massey, R.
McCracken, H. J.
Rhodes, J.
Salvato, M.
Sanders, D. B.
Scoville, N. Z.
Sasaki, S.
Smolcic, V.
Taniguchi, Y.
Thompson, D.
CA COSMOS Collaboration
TI STELLAR AND TOTAL BARYON MASS FRACTIONS IN GROUPS AND CLUSTERS SINCE
REDSHIFT 1
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE cosmological parameters; cosmology: observations; diffuse radiation;
galaxies: clusters: general; galaxies: stellar content; X-rays:
galaxies: clusters
ID EVOLUTION SURVEY COSMOS; NEARBY GALAXY CLUSTERS; X-RAY LUMINOSITY;
DIFFUSE OPTICAL LIGHT; DIGITAL SKY SURVEY; WIDE-FIELD SURVEY; COLD
DARK-MATTER; M-T RELATION; STAR-FORMATION; XMM-NEWTON
AB We investigate if the discrepancy between estimates of the total baryon mass fraction obtained from observations of the cosmic microwave background (CMB) and of galaxy groups/clusters persists when a large sample of groups is considered. To this purpose, 91 candidate X-ray groups/poor clusters at redshift 0.1 <= z <= 1 are selected from the COSMOS 2 deg(2) survey, based only on their X-ray luminosity and extent. This sample is complemented by 27 nearby clusters with a robust, analogous determination of the total and stellar mass inside R(500). The total sample of 118 groups and clusters with z <= 1 spans a range in M(500) of similar to 10(13)-10(15) M(circle dot). We find that the stellar mass fraction associated with galaxies at R(500) decreases with increasing total mass as M(500)(-0.37+/-0.04), independent of redshift. Estimating the total gas mass fraction from a recently derived, high-quality scaling relation, the total baryon mass fraction (f(500)(stars+gas) = f(500)(stars) + f(500)(gas)) is found to increase by similar to 25%, when M(500) increases from < M > = 5 x 10(13) M(circle dot) to < M > = 7 x 10(14)M(circle dot). After consideration of a plausible contribution due to intracluster light (11%-22% of the total stellar mass) and gas depletion through the hierarchical assembly process (10% of the gas mass), the estimated values of the total baryon mass fraction are still lower than the latest CMB measure of the same quantity (WMAP5), at a significance level of 3.3 sigma for groups of < M > = 5 x 10(13) M(circle dot). The discrepancy decreases toward higher total masses, such that it is 1 sigma at < M > = 7 x 10(14) M(circle dot). We discuss this result in terms of nongravitational processes such as feedback and filamentary heating.
C1 [Giodini, S.; Pierini, D.; Finoguenov, A.; Pratt, G. W.; Boehringer, H.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany.
[Finoguenov, A.] Univ Maryland, Baltimore, MD 21250 USA.
[Leauthaud, A.] Univ Calif Berkeley, LBNL, Berkeley, CA 94720 USA.
[Leauthaud, A.] Univ Calif Berkeley, Berkeley Ctr Cosmol Phys, Berkeley, CA 94720 USA.
[Guzzo, L.] INAF, Osservatorio Astron Brera, I-23807 Merate, LC, Italy.
[Aussel, H.] Univ Paris 07, AIM Unite Mixte Rech, CEA, CNRS,UMR N158, Paris, France.
[Bolzonella, M.] INAF, Bologna Astron Observ, I-40127 Bologna, Italy.
[Capak, P.; Scoville, N. Z.] Spitzer Sci Ctr, Pasadena, CA 91125 USA.
[Capak, P.; Massey, R.; Rhodes, J.; Salvato, M.; Smolcic, V.; Thompson, D.] CALTECH, Pasadena, CA 91125 USA.
[Elvis, M.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
[Hasinger, G.] Max Planck Inst Plasma Phys, D-85748 Garching, Germany.
[Ilbert, O.; Kartaltepe, J. S.; Sanders, D. B.] Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA.
[Koekemoer, A. M.] Space Telescope Sci Inst, Baltimore, MD 21218 USA.
[Lilly, S. J.] ETH, Inst Astron, Dept Phys, CH-8093 Zurich, Switzerland.
[McCracken, H. J.] Univ Paris 06, Inst Astrophys, UMR 7095, CNRS, F-75014 Paris, France.
[Rhodes, J.] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.
[Sasaki, S.] Tohoku Univ, Astron Inst, Grad Sch Sci, Aoba Ku, Sendai, Miyagi 9808578, Japan.
[Sasaki, S.] Ehime Univ, Dept Phys, Grad Sch Sci & Engn, Matsuyama, Ehime 7908577, Japan.
[Taniguchi, Y.] Ehime Univ, Res Ctr Space & Cosm Evolut, Matsuyama, Ehime 7908577, Japan.
[Thompson, D.] Univ Arizona, Large Binocular Telescope Observ, Tucson, AZ 85721 USA.
RP Giodini, S (reprint author), Max Planck Inst Extraterr Phys, Giessenbachstr, D-85748 Garching, Germany.
RI Bolzonella, Micol/O-9495-2015;
OI Bolzonella, Micol/0000-0003-3278-4607; Koekemoer,
Anton/0000-0002-6610-2048; Massey, Richard/0000-0002-6085-3780
NR 84
TC 177
Z9 177
U1 0
U2 7
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD SEP
PY 2009
VL 703
IS 1
BP 982
EP 993
DI 10.1088/0004-637X/703/1/982
PG 12
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 492AE
UT WOS:000269625000081
ER
PT J
AU Daligault, J
Gupta, S
AF Daligault, J.
Gupta, S.
TI ELECTRON-ION SCATTERING IN DENSE MULTI-COMPONENT PLASMAS: APPLICATION TO
THE OUTER CRUST OF AN ACCRETING NEUTRON STAR
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE dense matter; equation of state; nuclear reactions, nucleosynthesis,
abundances; stars: neutron; X-rays: binaries; X-rays: bursts
ID X-RAY-BURSTS; CRYSTALLINE LATTICE PHASE; LINEAR MIXING RULE;
THERMAL-CONDUCTIVITIES; TRANSPORT-PROPERTIES; SUPERBURST IGNITION;
MODELS; MATTER; BREMSSTRAHLUNG; KS-1731-260
AB The thermal conductivity of a dense multi-component plasma (MCP) is critical to the modeling of accreting neutron stars. To this end, we perform large-scale molecular dynamics simulations to calculate the static structure factor of the dense MCP in the neutron star crust from near the photosphere-ocean boundary to the vicinity of the neutron drip point. The structure factors are used to validate a microscopic linear mixing rule that is valid for arbitrarily complex plasmas over a wide range of Coulomb couplings. The microscopic mixing rule in turn implies and validates the linear mixing rule (LMR) for the equation of state properties and also the LMR for the electrical and thermal conductivities of dense MCPs. To make our result as useful as possible, for the specific cases of electrical and thermal conductivities, we provide a simple analytic fit that is valid for arbitrarily complex MCPs over a wide range of Coulomb couplings. We compute the thermal conductivity for a representative compositional profile of the outer crust of an accreting neutron star in which hundreds of nuclear species can be present. We utilize our results to re-examine the so-called impurity parameter formalism as used to characterize impure plasmas.
C1 [Daligault, J.; Gupta, S.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Daligault, J (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM daligaul@lanl.gov; guptasanjib@lanl.gov
FU U. S. Department of Energy [DE-AC52-06NA25396]
FX We thank Sanjay Reddy and Dany Page for stimulating discussions. This
work was performed for the U. S. Department of Energy by Los Alamos
National Laboratory under contract DE-AC52-06NA25396.
NR 43
TC 16
Z9 16
U1 0
U2 6
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD SEP
PY 2009
VL 703
IS 1
BP 994
EP 1011
DI 10.1088/0004-637X/703/1/994
PG 18
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 492AE
UT WOS:000269625000082
ER
PT J
AU Yu, C
Li, H
AF Yu, Cong
Li, Hui
TI NONAXISYMMETRIC ROSSBY VORTEX INSTABILITY WITH TOROIDAL MAGNETIC FIELDS
IN RADIALLY STRUCTURED DISKS
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE accretion, accretion disks; instabilities; MHD; waves
ID THIN ACCRETION DISKS; WAVE INSTABILITY; PROTOPLANETARY DISKS; STABILITY;
MIGRATION; MODES
AB We investigate the global nonaxisymmetric Rossby vortex instability (RVI) in a differentially rotating, compressible magnetized accretion disk with radial density structures. Equilibrium magnetic fields are assumed to have only the toroidal component. Using linear theory analysis, we show that the density structure can be unstable to nonaxisymmetric modes. We find that, for the magnetic field profiles we have studied, magnetic fields always provide a stabilizing effect to the unstable RVI modes. We discuss the physical mechanism of this stabilizing effect. The threshold and properties of the unstable modes are also discussed in detail. In addition, we present linear stability results for the global magnetorotational instability when the disk is compressible.
C1 [Yu, Cong] Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, Kunming 650011, Peoples R China.
[Yu, Cong; Li, Hui] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Yu, C (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, Kunming 650011, Peoples R China.
EM congyu@lanl.gov; hli@lanl.gov
FU Laboratory Directed Research and Development (LDRD) Programs; Institute
for Geophysics and Planetary Physics (IGPP); National Natural Science
Foundation of China (NSFC) [10703012]; Western Light Young Scholar
Program
FX This research was supported by the Laboratory Directed Research and
Development (LDRD) Programs at Los Alamos and by the Institute for
Geophysics and Planetary Physics (IGPP). C.Y. thanks the support from
National Natural Science Foundation of China (NSFC, 10703012) and
Western Light Young Scholar Program. We thank the anonymous referee
whose comments helped to improve the presentation and quality of this
paper.
NR 20
TC 13
Z9 14
U1 0
U2 5
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD SEP 1
PY 2009
VL 702
IS 1
BP 75
EP 84
DI 10.1088/0004-637X/702/1/75
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 487BD
UT WOS:000269244500007
ER
PT J
AU Stephens, DC
Leggett, SK
Cushing, MC
Marley, MS
Saumon, D
Geballe, TR
Golimowski, DA
Fan, XH
Noll, KS
AF Stephens, D. C.
Leggett, S. K.
Cushing, Michael C.
Marley, Mark S.
Saumon, D.
Geballe, T. R.
Golimowski, David A.
Fan, Xiaohui
Noll, K. S.
TI THE 0.8-14.5 mu m SPECTRA OF MID-L TO MID-T DWARFS: DIAGNOSTICS OF
EFFECTIVE TEMPERATURE, GRAIN SEDIMENTATION, GAS TRANSPORT, AND SURFACE
GRAVITY
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE stars: individual (2MASS J00361617+1821104, 2MASS J05591914-1404488,
2MASS J08251968+2115521, 2MASS J09083803+5032088, 2MASS
J15074769-1627386, 2MASS J22244381-0158521, 2MASS J22443167+2043433,
2MASS J22541892+3123498, DENIS-P J025503.3-470049, SDSS
J000013.54+255418.6, SDSS J075840.32+324723.3, SDSS J080531.83+481233.1,
SDSS J085758.44+570851.4, SDSS J105213.50+442255.6AB, SDSS
J111009.99+011613.0, SDSS J115553.85+055957.5, SDSS J120747.17+024424.8,
SDSS J125453.90-012247.5, SDSS J133148.88-011652.5, SDSS
J151643.00+305344.3, SDSS J152039.82+354619.8); stars: low-mass, brown
dwarfs
ID SPITZER-SPACE-TELESCOPE; DIGITAL SKY SURVEY; LOW-MASS STARS; FIELD
L-DWARFS; EXTRASOLAR GIANT PLANETS; COLOR-MAGNITUDE DIAGRAMS; INFRARED
ARRAY CAMERA; EXOPLANET HOST STAR; BROWN DWARFS; L/T TRANSITION
AB We present new 5.2-14.5 mu m low-resolution spectra of 14 mid-L to mid-T dwarfs. We also present new 3.0-4.1 mu m spectra for five of these dwarfs. These data are supplemented by existing red and near-infrared spectra (similar to 0.6-2.5 mu m), as well as red through mid-infrared spectroscopy of seven other L and T dwarfs presented by Cushing et al. We compare these spectra to those generated from the model atmospheres of Saumon & Marley. The models reproduce the observed spectra well, except in the case of one very red L3.5 dwarf, 2MASS J22244381-0158521. The broad wavelength coverage allows us to constrain almost independently the four parameters used to describe these photospheres in our models: effective temperature (T(eff)), surface gravity, grain sedimentation efficiency (f(sed)), and vertical gas transport efficiency (K(zz)). The CH(4) bands centered at 2.2, 3.3, and 7.65 mu m and the CO band at 2.3 mu m are sensitive to K(zz), and indicates that chemical mixing is important in all L and T dwarf atmospheres. The sample of L3.5 to T5.5 dwarfs spans the range 1800 K greater than or similar to T(eff) greater than or similar to 1000 K, with an L-T transition (spectral types L7 to T4) that lies between 1400 and 1100 K for dwarfs with typical near-infrared colors; bluer and redder dwarfs can be 100 K warmer or cooler, respectively, when using infrared spectral types. When using optical spectral types, the bluer dwarfs have more typical T(eff) values as they tend to have earlier optical spectral types. In this model analysis, f(sed) increases rapidly between types T0 and T4, indicating that increased sedimentation can explain the rapid disappearance of clouds at this stage of brown dwarf evolution. There is a suggestion that the transition to dust-free atmospheres happens at lower temperatures for lower gravity dwarfs.
C1 [Stephens, D. C.] Brigham Young Univ, Dept Phys & Astron, Provo, UT 84602 USA.
[Leggett, S. K.; Geballe, T. R.] No Operat Ctr, Gemini Observ, Hilo, HI 96720 USA.
[Cushing, Michael C.] Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA.
[Marley, Mark S.] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA.
[Saumon, D.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Golimowski, David A.; Noll, K. S.] Space Telescope Sci Inst, Baltimore, MD 21218 USA.
[Fan, Xiaohui] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA.
RP Stephens, DC (reprint author), Brigham Young Univ, Dept Phys & Astron, N486 ESC, Provo, UT 84602 USA.
EM denise_stephens@byu.edu
RI Noll, Keith/C-8447-2012; Marley, Mark/I-4704-2013
FU Spitzer Cycle 1 and 2 Guest Observer Programs [3431, 20514]; Gemini
Observatory; Spitzer Cycle 3 Theory; NASA [NAG5-13127]; National Science
Foundation; SIMBAD database
FX This work is based on observations made with the Spitzer Space Telescope
and the Gemini North Observatory through programs GN-2005A-Q-23 and
GN-2006B-Q-37. Spitzer is operated by the Jet Propulsion Laboratory,
California Institute of Technology, under a contract with NASA. Gemini
Observatory is operated by the Association of Universities for Research
in Astronomy, Inc., under a cooperative agreement with the NSF on behalf
of the Gemini partnership: the National Science Foundation (United
States), the Science and Technology Facilities Council (United Kingdom),
the National Research Council (Canada), CONICYT (Chile), the Australian
Research Council (Australia), Ministerio da Ciencia e Technologia
(Brazil), and Ministerio da Ciencia Tecnologia e Innovacion Productiva
(Argentina). This work has been supported in part by funds from the
Spitzer Cycle 1 and 2 Guest Observer Programs 3431 and 20514 granted
through the California Institute of Technology. S.K.L.'s and T.R.G.'s
research is supported by Gemini Observatory. D.S.'s contribution was
supported by a Spitzer Cycle 3 Theory grant. D.C.S.'s acquisition and
reduction of Gemini data was funded by NASA Grant NAG5-13127. This
publication makes use of data from the Two Micron All Sky Survey, which
is a joint project of the University of Massachusetts and the Infrared
Processing and Analysis Center, and funded by the National Aeronautics
and Space Administration and the National Science Foundation, the SIMBAD
database, operated at CDS, Strasbourg, France, and NASA's Astrophysics
Data System Bibliographic Services.
NR 99
TC 168
Z9 168
U1 1
U2 6
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD SEP 1
PY 2009
VL 702
IS 1
BP 154
EP 170
DI 10.1088/0004-637X/702/1/154
PG 17
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 487BD
UT WOS:000269244500013
ER
PT J
AU Frankel, M
Beiersdorfer, P
Brown, GV
Gu, MF
Kelley, RL
Kilbourne, CA
Porter, FS
AF Frankel, M.
Beiersdorfer, P.
Brown, G. V.
Gu, M. F.
Kelley, R. L.
Kilbourne, C. A.
Porter, F. S.
TI X-RAY SIGNATURE OF CHARGE EXCHANGE IN L-SHELL SULFUR IONS
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE atomic data; atomic processes; line: formation; line: identification;
planets and satellites: individual (Jupiter); X-rays: individual
(Jupiter, laboratory)
ID SOLAR-WIND IONS; CROSS-SECTIONS; XMM-NEWTON; HE-LIKE; SPECTRA; ENERGY;
COLLISIONS; TRAP; EBIT; MICROCALORIMETER
AB The X-ray signature of L-shell charge exchange in sulfur was studied in the laboratory. A comparison of the charge exchange (CX) spectra with those obtained under electron-impact excitation showed marked differences. In the CX spectra, an enhancement was observed in the transitions from levels with high principal quantum numbers, n = 4, 5, 6 -> n = 2 in comparison with the n = 3 -> n = 2 transitions that dominate the direct excitation spectra. An even greater enhancement was recorded in the transitions from the levels of electron capture to the ground states: n = 7, 8, 9 -> n = 2. The spectra mainly consist of emission from S XIV, but lower charge states such as S XIII, S XII, and S xi also contribute. The results have been compared with observations made by the Chandra and XMM-Newton X-ray Observatories of Jupiter's polar regions. The enhancement we noticed in transitions from the high-n levels is not seen in the Chandra spectra.
C1 [Frankel, M.; Beiersdorfer, P.; Brown, G. V.; Gu, M. F.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Beiersdorfer, P.; Gu, M. F.] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.
[Kelley, R. L.; Kilbourne, C. A.; Porter, F. S.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
RP Frankel, M (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
EM frankel4@llnl.gov; beiersdorfer1@llnl.gov
RI Porter, Frederick/D-3501-2012; Kelley, Richard/K-4474-2012
OI Porter, Frederick/0000-0002-6374-1119;
FU U.S. Department of Energy [DE-AC52-07NA27344]; NASA [NNG06GB11G];
Laboratory Directed Research and Development Program [06-ERD-010]
FX Work at LLNL was performed under the auspices of the U.S. Department of
Energy by Lawrence Livermore National Laboratory under Contract
DE-AC52-07NA27344 and was in part supported by NASA, including through
grant NNG06GB11G from the Planetary Atmospheres Program to UC Berkeley
and through support from the Astronomy and Physics Research and Analysis
Program received by LLNL, SAO, and GSFC. Part of the work was funded by
the Laboratory Directed Research and Development Program at LLNL under
project tracking number 06-ERD-010.r M. F. would like to thank Prof.
Tomas Brage as well as Dr. P.O. Zetterberg and Dr. Carl-Erik Magnusson
at Lund University, Lund, Sweden, for their continued support during her
stay at Livermore. The authors wish to thank Joel Clementson, Daniel
Thorn, and Ed Magee for their technical support and advice.
NR 41
TC 5
Z9 5
U1 0
U2 4
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
EI 1538-4357
J9 ASTROPHYS J
JI Astrophys. J.
PD SEP 1
PY 2009
VL 702
IS 1
BP 171
EP 177
DI 10.1088/0004-637X/702/1/171
PG 7
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 487BD
UT WOS:000269244500014
ER
PT J
AU Modjaz, M
Li, W
Butler, N
Chornock, R
Perley, D
Blondin, S
Bloom, JS
Filippenko, AV
Kirshner, RP
Kocevski, D
Poznanski, D
Hicken, M
Foley, RJ
Stringfellow, GS
Berlind, P
Navascues, DBY
Blake, CH
Bouy, H
Brown, WR
Challis, P
Chen, H
de Vries, WH
Dufour, P
Falco, E
Friedman, A
Ganeshalingam, M
Garnavich, P
Holden, B
Illingworth, G
Lee, N
Liebert, J
Marion, GH
Olivier, SS
Prochaska, JX
Silverman, JM
Smith, N
Starr, D
Steele, TN
Stockton, A
Williams, GG
Wood-Vasey, WM
AF Modjaz, M.
Li, W.
Butler, N.
Chornock, R.
Perley, D.
Blondin, S.
Bloom, J. S.
Filippenko, A. V.
Kirshner, R. P.
Kocevski, D.
Poznanski, D.
Hicken, M.
Foley, R. J.
Stringfellow, G. S.
Berlind, P.
Barrado y Navascues, D.
Blake, C. H.
Bouy, H.
Brown, W. R.
Challis, P.
Chen, H.
de Vries, W. H.
Dufour, P.
Falco, E.
Friedman, A.
Ganeshalingam, M.
Garnavich, P.
Holden, B.
Illingworth, G.
Lee, N.
Liebert, J.
Marion, G. H.
Olivier, S. S.
Prochaska, J. X.
Silverman, J. M.
Smith, N.
Starr, D.
Steele, T. N.
Stockton, A.
Williams, G. G.
Wood-Vasey, W. M.
TI FROM SHOCK BREAKOUT TO PEAK AND BEYOND: EXTENSIVE PANCHROMATIC
OBSERVATIONS OF THE TYPE Ib SUPERNOVA 2008D ASSOCIATED WITH SWIFT X-RAY
TRANSIENT 080109
SO ASTROPHYSICAL JOURNAL
LA English
DT Review
DE galaxies: distances and redshifts; galaxies: individual (NGC 2770);
supernovae: general; supernovae: individual (SN 2008D)
ID CORE-COLLAPSE SUPERNOVA; NEUTRON-STAR KICKS; LIGHT CURVES; IA
SUPERNOVAE; IC SUPERNOVAE; MASSIVE STARS; OPTICAL SPECTROSCOPY; IMAGE
SUBTRACTION; UBVRI PHOTOMETRY; BURST CONNECTION
AB We present extensive early photometric (ultraviolet through near-infrared) and spectroscopic (optical and near-infrared) data on supernova (SN) 2008D as well as X-ray data analysis on the associated Swift X-ray transient (XRT) 080109. Our data span a time range of 5 hr before the detection of the X-ray transient to 150 days after its detection, and a detailed analysis allowed us to derive constraints on the nature of the SN and its progenitor; throughout we draw comparisons with results presented in the literature and find several key aspects that differ. We show that the X-ray spectrum of XRT 080109 can be fit equally well by an absorbed power law or a superposition of about equal parts of both power law and blackbody. Our data first established that SN 2008D is a spectroscopically normal SN Ib (i.e., showing conspicuous He lines) and showed that SN 2008D had a relatively long rise time of 18 days and a modest optical peak luminosity. The early-time light curves of the SN are dominated by a cooling stellar envelope (for Delta t approximate to 0.1-4 days, most pronounced in the blue bands) followed by (56)Ni decay. We construct a reliable measurement of the bolometric output for this stripped-envelope SN, and, combined with estimates of E(K) and M(ej) from the literature, estimate the stellar radius R(star) of its probable Wolf-Rayet progenitor. According to the model of Waxman et al. and Chevalier & Fransson, we derive R(star)(W07) = 1.2 +/- 0.7 R(circle dot) and R(star)(CF08) = 12 +/- 7 R(circle dot), respectively; the latter being more in line with typical WN stars. Spectra obtained at three and four months after maximum light show double-peaked oxygen lines that we associate with departures from spherical symmetry, as has been suggested for the inner ejecta of a number of SN Ib cores.
C1 [Modjaz, M.; Li, W.; Butler, N.; Chornock, R.; Perley, D.; Bloom, J. S.; Filippenko, A. V.; Kocevski, D.; Poznanski, D.; Foley, R. J.; Bouy, H.; Ganeshalingam, M.; Lee, N.; Silverman, J. M.; Smith, N.; Starr, D.; Steele, T. N.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA.
[Blondin, S.] ESO, D-85748 Garching, Germany.
[Blondin, S.; Kirshner, R. P.; Hicken, M.; Foley, R. J.; Berlind, P.; Blake, C. H.; Brown, W. R.; Challis, P.; Falco, E.; Friedman, A.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
[Bloom, J. S.; Starr, D.] Las Cumbres Global Telescope Network, Santa Barbara, CA 93117 USA.
[Stringfellow, G. S.] Univ Colorado, Ctr Astrophys & Space Astron, Boulder, CO 80309 USA.
[Barrado y Navascues, D.] CSIC, INTA, Ctr Astrobiol, LAEX, E-28691 Madrid, Spain.
[Bouy, H.] Inst Astrofis Canarias, E-38205 Tenerife, Spain.
[Chen, H.] Univ Chicago, Dept Astron, Chicago, IL 60637 USA.
[de Vries, W. H.] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA.
[de Vries, W. H.] Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94550 USA.
[Dufour, P.; Liebert, J.] Univ Arizona, Dept Astron, Tucson, AZ 85721 USA.
[Garnavich, P.] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA.
[Holden, B.; Illingworth, G.; Prochaska, J. X.] Univ Calif Santa Cruz, Univ Calif Observ, Lick Observ, Santa Cruz, CA 95064 USA.
[Marion, G. H.] Univ Texas Austin, Dept Astron, Austin, TX 78712 USA.
[Olivier, S. S.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Stockton, A.] Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA.
[Williams, G. G.] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA.
[Wood-Vasey, W. M.] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA.
RP Modjaz, M (reprint author), Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA.
EM mmodjaz@astro.berkeley.edu
RI Friedman, Andrew/I-4691-2013; Barrado Navascues, David/C-1439-2017;
OI Friedman, Andrew/0000-0003-1334-039X; Barrado Navascues,
David/0000-0002-5971-9242; Bouy, Herve/0000-0002-7084-487X
NR 180
TC 115
Z9 118
U1 0
U2 6
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD SEP 1
PY 2009
VL 702
IS 1
BP 226
EP 248
DI 10.1088/0004-637X/702/1/226
PG 23
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 487BD
UT WOS:000269244500016
ER
PT J
AU Stewart, KR
Bullock, JS
Wechsler, RH
Maller, AH
AF Stewart, Kyle R.
Bullock, James S.
Wechsler, Risa H.
Maller, Ariyeh H.
TI GAS-RICH MERGERS IN LCDM: DISK SURVIVABILITY AND THE BARYONIC ASSEMBLY
OF GALAXIES
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE cosmology: theory; dark matter; galaxies: formation; galaxies: halos;
methods: N-body simulations
ID STAR-FORMING GALAXIES; DIGITAL SKY SURVEY; DIFFUSE INTRAHALO LIGHT;
INITIAL MASS FUNCTION; METAL-POOR STARS; STELLAR MASS; SECULAR
EVOLUTION; MINOR MERGERS; GALACTIC DISKS; HIGH-REDSHIFT
AB We use N-body simulations and observationally normalized relations between dark matter halo mass, stellar mass, and cold gas mass to derive robust expectations about the baryonic content of major mergers out to redshift z similar to 2. First, we find that the majority of major mergers (m/M > 0.3) experienced by the Milky Way size dark matter halos should have been gas-rich, and that gas-rich mergers are increasingly common at high redshifts. Though the frequency of major mergers into galaxy halos in our simulations greatly exceeds the observed early-type galaxy fraction, the frequency of gas-poor major mergers is consistent with the observed fraction of bulge-dominated galaxies across the halo mass range M(DM) similar to 10(11)-10(13) M(circle dot). These results lend support to the conjecture that mergers with high-baryonic gas fractions play an important role in building and/or preserving disk galaxies in the universe. Second, we find that there is a transition mass below which a galaxy's past major mergers were primarily gas-rich and above which they were gas-poor. The associated stellar mass scale corresponds closely to that marking the observed bimodal division between blue, star-forming, disk-dominated systems and red, bulge-dominated systems with old populations. Finally, we find that the overall fraction of a galaxy's cold baryons deposited directly via major mergers is significant. Approximately similar to 20%-30% of the cold baryonic material in M(star) similar to 10(10.5) M(circle dot) (M(DM) similar to 10(12) M(circle dot)) galaxies is accreted as cold gas or stars via major mergers since z = 2, with most of this accretion in the form of cold gas. For more massive galaxies with M(star) similar to 10(11) M(circle dot) (M(DM) similar to 10(13) M(circle dot)), the fraction of baryons amassed in mergers since z = 2 is even higher, similar to 40%, but most of these accreted baryons are delivered directly in the form of stars. This baryonic mass deposition is almost unavoidable, and provides a limit on the fraction of a galaxy's cold baryons that can originate in cold flows or from hot halo cooling.
C1 [Stewart, Kyle R.; Bullock, James S.] Univ Calif Irvine, Dept Phys & Astron, Ctr Cosmol, Irvine, CA 92697 USA.
[Wechsler, Risa H.] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, Dept Phys, Stanford, CA 94305 USA.
[Wechsler, Risa H.] Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94305 USA.
[Maller, Ariyeh H.] New York City Coll Technol, Dept Phys, Brooklyn, NY 11201 USA.
RP Stewart, KR (reprint author), Univ Calif Irvine, Dept Phys & Astron, Ctr Cosmol, Irvine, CA 92697 USA.
RI Bullock, James/K-1928-2015
OI Bullock, James/0000-0003-4298-5082
FU NSF [AST 05-07916]; U.S. Department of Energy [DE-AC02-76SF00515];
Stanford University; CUNY GRTI-ROUND 9; Center for Cosmology
FX The simulation used in this paper was run on the Columbia machine at
NASA Ames. We thank Anatoly Klypin for running the simulation and making
it available to us. We are also indebted to Brandon Allgood for
providing the merger trees. We thank Charlie Conroy for sharing his
abundance matching data so we could assign stellar masses to dark matter
halos, and Lisa Wei (and collaborators) for sharing gas fraction data
from an upcoming paper. J.S.B. and K. R. S. are supported by NSF grant
AST 05-07916. R. H. W. was supported in part by the U.S. Department of
Energy under contract number DE-AC02-76SF00515 and by a Terman
Fellowship from Stanford University. A. H. M. acknowledges partial
support from a CUNY GRTI-ROUND 9 grant and from an ROA supplement to NSF
grant AST 05-07916. J.S.B. and K. R. S. are supported by the Center for
Cosmology at the University of California, Irvine.
NR 97
TC 73
Z9 73
U1 0
U2 3
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD SEP 1
PY 2009
VL 702
IS 1
BP 307
EP 317
DI 10.1088/0004-637X/702/1/307
PG 11
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 487BD
UT WOS:000269244500023
ER
PT J
AU Shaw, LD
Zahn, O
Holder, GP
Dore, O
AF Shaw, Laurie D.
Zahn, Oliver
Holder, Gilbert P.
Dore, Olivier
TI SHARPENING THE PRECISION OF THE SUNYAEV-ZEL'DOVICH POWER SPECTRUM
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE cosmic microwave background; cosmology: theory; galaxies: clusters:
general; intergalactic medium; methods: N-body simulations
ID ATACAMA COSMOLOGY TELESCOPE; NEARBY GALAXY CLUSTERS; DARK-MATTER; X-RAY;
EXTRAGALACTIC SOURCES; SCALING RELATIONS; MASS FUNCTION; POINT SOURCES;
GAS FRACTION; XMM-NEWTON
AB Using both halo model calculations and a large sample of simulated SZ maps, we demonstrate that high-mass clusters add significant non-Gaussian variance to measurements of the SZ power spectrum amplitude. The difficulty in correctly accounting theoretically for the contribution of these objects to the uncertainty in C-l leads to a reduced sensitivity to sigma(8). We show that a simple solution is to mask out the brightest clusters in the map before measuring the power spectrum. We demonstrate that fairly conservative masking can reduce the variance and Gaussianize the statistics significantly, thus increasing the sensitivity to cosmological parameters. Choosing which objects to mask is nontrivial; we found that using a fixed sky density produced a well-defined and well-behaved estimate that can easily be applied to real maps. For example, masking the 10 (90) brightest clusters in a 100 deg(2) SZ map will improve the sensitivity to C-l by a factor of two at l = 1000 (2000) and 1.5 at l = 2000 (4000). We show that even in the presence of astrophysical foregrounds (primary cosmic microwave background and point sources) and instrument noise, one can increase the precision on measurements of sigma(8) by masking up to 0.9 clusters deg(-2).
C1 [Shaw, Laurie D.; Holder, Gilbert P.] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada.
[Zahn, Oliver] Univ Calif Berkeley, Dept Phys, Berkeley Ctr Cosmol Phys, Berkeley, CA 94720 USA.
[Zahn, Oliver] Lawrence Berkeley Natl Labs, Berkeley, CA 94720 USA.
[Dore, Olivier] Univ Toronto, Canadian Inst Theoret Astrophys, Toronto, ON M5S 3H8, Canada.
RP Shaw, LD (reprint author), McGill Univ, Dept Phys, 3600 Univ St, Montreal, PQ H3A 2T8, Canada.
EM lds@physics.mcgill.ca
FU Natural Sciences and Engineering Research Council (Canada) through the
Discovery Grant
FX This work supported by the Natural Sciences and Engineering Research
Council (Canada) through the Discovery Grant Awards to G. P. H. G. P. H.
would also like to acknowledge the support from the Canadian Institute
for Advanced Research and the Canada Research Chairs Program. This
research was facilitated in part by allocations of time on the COSMOS
supercomputer at DAMTP in Cambridge, a UK-CCC facility supported by
HEFCE and PPARC. Computer simulations were supported by the National
Science Foundation through TeraGrid resources provided by Pittsburgh
Supercomputing Center and the National Center for Supercomputing
Applications under grant AST070015. We would like to thank Paul Bode for
providing the N- body simulations, and Niayesh Afshordi, Tom Crawford,
Keith Vanderlinde, Paul Bode, and Nicholas Hall for useful discussions.
NR 54
TC 35
Z9 35
U1 0
U2 3
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
EI 1538-4357
J9 ASTROPHYS J
JI Astrophys. J.
PD SEP 1
PY 2009
VL 702
IS 1
BP 368
EP 376
DI 10.1088/0004-637X/702/1/368
PG 9
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 487BD
UT WOS:000269244500028
ER
PT J
AU Rykoff, ES
Aharonian, F
Akerlof, CW
Ashley, MCB
Barthelmy, SD
Flewelling, HA
Gehrels, N
Gogus, E
Guver, T
Kiziloglu, U
Krimm, HA
McKay, TA
Ozel, M
Phillips, A
Quimby, RM
Rowell, G
Rujopakarn, W
Schaefer, BE
Smith, DA
Vestrand, WT
Wheeler, JC
Wren, J
Yuan, F
Yost, SA
AF Rykoff, E. S.
Aharonian, F.
Akerlof, C. W.
Ashley, M. C. B.
Barthelmy, S. D.
Flewelling, H. A.
Gehrels, N.
Gogus, E.
Guver, T.
Kiziloglu, Ue.
Krimm, H. A.
McKay, T. A.
Ozel, M.
Phillips, A.
Quimby, R. M.
Rowell, G.
Rujopakarn, W.
Schaefer, B. E.
Smith, D. A.
Vestrand, W. T.
Wheeler, J. C.
Wren, J.
Yuan, F.
Yost, S. A.
TI LOOKING INTO THE FIREBALL: ROTSE-III AND SWIFT OBSERVATIONS OF EARLY
GAMMA-RAY BURST AFTERGLOWS
SO ASTROPHYSICAL JOURNAL
LA English
DT Review
DE gamma rays: bursts
ID EARLY OPTICAL AFTERGLOW; HOST GALAXIES; LIGHT CURVES; THEORETICAL
IMPLICATIONS; SPECTRAL EVOLUTION; GRB OBSERVATIONS; PROMPT EMISSION;
DUST EXTINCTION; XRT DATA; FLARES
AB We report on a complete set of early optical afterglows of gamma-ray bursts (GRBs) obtained with the Robotic Optical Transient Search Experiment (ROTSE-III) telescope network from 2005 March through 2007 June. This set is comprised of 12 afterglows with early optical and Swift/X-Ray Telescope observations, with a median ROTSE-III response time of 45 s after the start of gamma-ray emission (8 s after the GCN notice time). These afterglows span 4 orders of magnitude in optical luminosity, and the contemporaneous X-ray detections allow multi-wavelength spectral analysis. Excluding X-ray flares, the broadband synchrotron spectra show that the optical and X-ray emission originate in a common region, consistent with predictions of the external forward shock in the fireball model. However, the fireball model is inadequate to predict the temporal decay indices of the early afterglows, even after accounting for possible long-duration continuous energy injection. We find that the optical afterglow is a clean tracer of the forward shock, and we use the peak time of the forward shock to estimate the initial bulk Lorentz factor of the GRB outflow, and find 100 less than or similar to Gamma(0) less than or similar to 1000, consistent with expectations.
C1 [Rykoff, E. S.] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA.
[Aharonian, F.] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany.
[Akerlof, C. W.; Flewelling, H. A.; McKay, T. A.; Yuan, F.] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA.
[Ashley, M. C. B.; Phillips, A.] Univ New S Wales, Sch Phys, Dept Astrophys & Opt, Sydney, NSW 2052, Australia.
[Barthelmy, S. D.; Gehrels, N.; Krimm, H. A.] NASA, Goddard Space Flight Ctr, High Energy Astrophys Lab, Greenbelt, MD 20771 USA.
[Gogus, E.] Sabanci Univ, Fac Sci & Engn, TR-34956 Istanbul, Turkey.
[Guver, T.] Univ Arizona, Dept Astron, Tucson, AZ 85721 USA.
[Kiziloglu, Ue.] Middle E Tech Univ, TR-06531 Ankara, Turkey.
[Krimm, H. A.] Univ Space Res Assoc, Columbia, MD 21044 USA.
[Ozel, M.] Cag Univ, Fac Arts & Sci, Yenise Tarsus Mersin, Turkey.
[Quimby, R. M.] CALTECH, Div Phys Math & Astron, Pasadena, CA 91125 USA.
[Rowell, G.] Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia.
[Rujopakarn, W.] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA.
[Schaefer, B. E.] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA.
[Smith, D. A.] Guilford Coll, Greensboro, NC 27410 USA.
[Vestrand, W. T.; Wren, J.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Wheeler, J. C.] Univ Texas Austin, Dept Astron, Austin, TX 78712 USA.
[Yost, S. A.] St Johns Univ, Coll St Benedict, Dept Phys, Collegeville, MN 56321 USA.
RP Rykoff, ES (reprint author), Univ Calif Santa Barbara, Dept Phys, 2233B Broida Hall, Santa Barbara, CA 93106 USA.
EM erykoff@physics.ucsb.edu
RI Guver, Tolga/C-1408-2011; Barthelmy, Scott/D-2943-2012; Gehrels,
Neil/D-2971-2012; Rujopakarn, Wiphu/E-7849-2012; McKay,
Timothy/C-1501-2009; Guver, Tolga/B-1039-2014;
OI McKay, Timothy/0000-0001-9036-6150; Guver, Tolga/0000-0002-3531-9842;
Rujopakarn, Wiphu/0000-0002-0303-499X; Flewelling,
Heather/0000-0002-1050-4056; Rowell, Gavin/0000-0002-9516-1581
FU NASA [NNG-04WC41G, NNG-06GI90G, NNX-07AF02G]; NSF [AST-0407061,
PHY-0801007, AST-0335588, AST-0707769]; Australian Research Council's
Discovery Projects; University of New South Wales; University of Texas;
University of Michigan; Michigan Space Grant Consortium
FX E. S. R. thanks the TABASGO foundation. This work has been supported by
NASA grant NNG-04WC41G, NSF grants AST-0407061 and PHY-0801007, the
Australian Research Council's Discovery Projects funding scheme, the
University of New South Wales, the University of Texas, and the
University of Michigan. H. A. F. has been supported by NSF grant
AST-0335588 and by the Michigan Space Grant Consortium. F. Y. has been
supported under NASA Swift Guest Investigator grants NNG-06GI90G and
NNX-07AF02G. J.C.W. is supported in part by NSF grant AST-0707769.
Special thanks to David Doss at McDonald Observatory, Toni Hanke at the
H. E. S. S. site, and Tuncay Ozisik at TUG.
NR 115
TC 65
Z9 66
U1 0
U2 11
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
EI 1538-4357
J9 ASTROPHYS J
JI Astrophys. J.
PD SEP 1
PY 2009
VL 702
IS 1
BP 489
EP 505
DI 10.1088/0004-637X/702/1/489
PG 17
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 487BD
UT WOS:000269244500040
ER
PT J
AU Schmidt, F
Rozo, E
Dodelson, S
Hui, L
Sheldon, E
AF Schmidt, Fabian
Rozo, Eduardo
Dodelson, Scott
Hui, Lam
Sheldon, Erin
TI LENSING BIAS IN COSMIC SHEAR
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE cosmology: theory; dark matter; gravitational lensing; large-scale
structure of universe
ID POWER SPECTRUM; WEAK; STATISTICS; BISPECTRUM; COSMOLOGY; CLUSTERS; WIDE
AB Only galaxies bright enough and large enough to be unambiguously identified and measured are included in galaxy surveys used to estimate cosmic shear. We demonstrate that because gravitational lensing can scatter galaxies across the brightness and size thresholds, cosmic shear experiments suffer from lensing bias. We calculate the effect on the shear power spectrum and show that-unless corrected for-it will lead analysts to cosmological parameters estimates that are biased at the 2-3 sigma level in DETF Stage III experiments, such as the Dark Energy Survey.
C1 [Schmidt, Fabian; Dodelson, Scott] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA.
[Schmidt, Fabian; Dodelson, Scott] Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
[Rozo, Eduardo] Ohio State Univ, CCAPP, Columbus, OH 43210 USA.
[Dodelson, Scott] Fermilab Natl Accelerator Lab, Ctr Particle Astrophys, Batavia, IL 60510 USA.
[Hui, Lam] Inst Strings Cosmol & Astroparticle Phys, New York, NY USA.
[Hui, Lam] Columbia Univ, Dept Phys, New York, NY 10027 USA.
[Sheldon, Erin] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Schmidt, F (reprint author), Univ Chicago, Dept Astron & Astrophys, 5640 S Ellis Ave, Chicago, IL 60637 USA.
OI Schmidt, Fabian/0000-0002-6807-7464
FU NSF [PHY-0114422, PHY-0551142, AST 0707985]; US Department of Energy
[DE-FG02-95ER40896, DE-FG02-92-ER40699]; Initiatives in Science and
Engineering Program at Columbia University; Center for Cosmology and
Astro-Particle Physics (CCAPP) at The Ohio State University
FX This work was supported by the Kavli Institute for Cosmological Physics
at the University of Chicago through grants NSF PHY-0114422 and NSF
PHY-0551142, and by the US Department of Energy, including grants
DE-FG02-95ER40896 and DE-FG02-92-ER40699. L. H. acknowledges support by
the Initiatives in Science and Engineering Program at Columbia
University. E. R. was funded by the Center for Cosmology and
Astro-Particle Physics (CCAPP) at The Ohio State University, and by NSF
grant AST 0707985.
NR 34
TC 26
Z9 26
U1 0
U2 3
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD SEP 1
PY 2009
VL 702
IS 1
BP 593
EP 602
DI 10.1088/0004-637X/702/1/593
PG 10
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 487BD
UT WOS:000269244500047
ER
PT J
AU Hao, JG
Koester, BP
Mckay, TA
Rykoff, ES
Rozo, E
Evrard, A
Annis, J
Becker, M
Busha, M
Gerdes, D
Johnston, DE
Sheldon, E
Wechsler, RH
AF Hao, Jiangang
Koester, Benjamin P.
Mckay, Timothy A.
Rykoff, Eli S.
Rozo, Eduardo
Evrard, August
Annis, James
Becker, Matthew
Busha, Michael
Gerdes, David
Johnston, David E.
Sheldon, Erin
Wechsler, Risa H.
TI PRECISION MEASUREMENTS OF THE CLUSTER RED SEQUENCE USING AN
ERROR-CORRECTED GAUSSIAN MIXTURE MODEL
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE cosmology: observations; galaxies: clusters: general; methods: data
analysis
ID COLOR-MAGNITUDE RELATION; EARLY-TYPE GALAXIES; DIGITAL SKY SURVEY;
X-RAY-CLUSTERS; ELLIPTIC GALAXIES; LUMINOSITY FUNCTIONS; DISTANT
CLUSTERS; EVOLUTION; CALIBRATION; DEPENDENCE
AB The red sequence is an important feature of galaxy clusters and plays a crucial role in optical cluster detection. Measurement of the slope and scatter of the red sequence are affected both by selection of red sequence galaxies and measurement errors. In this paper, we describe a new error-corrected Gaussian Mixture Model for red sequence galaxy identification. Using this technique, we can remove the effects of measurement error and extract unbiased information about the intrinsic properties of the red sequence. We use this method to select red sequence galaxies in each of the 13,823 clusters in the maxBCG catalog, and measure the red sequence ridgeline location and scatter of each. These measurements provide precise constraints on the variation of the average red galaxy populations in the observed frame with redshift. We find that the scatter of the red sequence ridgeline increases mildly with redshift, and that the slope decreases with redshift. We also observe that the slope does not strongly depend on cluster richness. Using similar methods, we show that this behavior is mirrored in a spectroscopic sample of field galaxies, further emphasizing that ridgeline properties are independent of environment. These precise measurements serve as an important observational check on simulations and mock galaxy catalogs. The observed trends in the slope and scatter of the red sequence ridgeline with redshift are clues to possible intrinsic evolution of the cluster red sequence itself. Most importantly, the methods presented in this work lay the groundwork for further improvements in optically based cluster cosmology.
C1 [Hao, Jiangang; Annis, James] Fermilab Natl Accelerator Lab, Ctr Particle Astrophys, Batavia, IL 60510 USA.
[Hao, Jiangang; Mckay, Timothy A.; Evrard, August; Gerdes, David] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA.
[Koester, Benjamin P.] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA.
[Mckay, Timothy A.; Evrard, August] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA.
[Rykoff, Eli S.] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA.
[Rozo, Eduardo] Ohio State Univ, CCAPP, Columbus, OH 43210 USA.
[Becker, Matthew] Univ Chicago, Dept Phys, Chicago, IL 60637 USA.
[Busha, Michael; Wechsler, Risa H.] Stanford Univ, Dept Phys, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA.
[Busha, Michael; Wechsler, Risa H.] Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94305 USA.
[Johnston, David E.] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA.
[Sheldon, Erin] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Hao, JG (reprint author), Fermilab Natl Accelerator Lab, Ctr Particle Astrophys, POB 500, Batavia, IL 60510 USA.
RI Hao, Jiangang/G-3954-2011; McKay, Timothy/C-1501-2009;
OI McKay, Timothy/0000-0001-9036-6150; Becker, Matthew/0000-0001-7774-2246;
Evrard, August/0000-0002-4876-956X; Hao, Jiangang/0000-0003-0502-7571
NR 66
TC 26
Z9 27
U1 0
U2 3
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
EI 1538-4357
J9 ASTROPHYS J
JI Astrophys. J.
PD SEP 1
PY 2009
VL 702
IS 1
BP 745
EP 758
DI 10.1088/0004-637X/702/1/745
PG 14
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 487BD
UT WOS:000269244500061
ER
PT J
AU Meegan, C
Lichti, G
Bhat, PN
Bissaldi, E
Briggs, MS
Connaughton, V
Diehl, R
Fishman, G
Greiner, J
Hoover, AS
van der Horst, AJ
Von Kienlin, A
Kippen, RM
Kouveliotou, C
McBreen, S
Paciesas, WS
Preece, R
Steinle, H
Wallace, MS
Wilson, RB
Wilson-Hodge, C
AF Meegan, Charles
Lichti, Giselher
Bhat, P. N.
Bissaldi, Elisabetta
Briggs, Michael S.
Connaughton, Valerie
Diehl, Roland
Fishman, Gerald
Greiner, Jochen
Hoover, Andrew S.
van der Horst, Alexander J.
Von Kienlin, Andreas
Kippen, R. Marc
Kouveliotou, Chryssa
McBreen, Sheila
Paciesas, W. S.
Preece, Robert
Steinle, Helmut
Wallace, Mark S.
Wilson, Robert B.
Wilson-Hodge, Colleen
TI THE FERMI GAMMA-RAY BURST MONITOR
SO ASTROPHYSICAL JOURNAL
LA English
DT Article
DE gamma rays: bursts; instrumentation: detectors
ID HIGH-ENERGY; HIGH-REDSHIFT; BATSE; DETECTORS
AB The Gamma-Ray Burst Monitor (GBM) will significantly augment the science return from the Fermi Observatory in the study of gamma-ray bursts (GRBs). The primary objective of GBM is to extend the energy range over which bursts are observed downward from the energy range of the Large Area Telescope (LAT) on Fermi into the hard X-ray range where extensive previous data sets exist. A secondary objective is to compute burst locations onboard to allow re-orienting the spacecraft so that the LAT can observe delayed emission from bright bursts. GBM uses an array of 12 sodium iodide scintillators and two bismuth germanate scintillators to detect gamma rays from similar to 8 keV to similar to 40 MeV over the full unocculted sky. The onboard trigger threshold is similar to 0.7 photons cm(-2) s(-1) (50-300 keV, 1 s peak). GBM generates onboard triggers for similar to 250 GRBs per year.
C1 [Meegan, Charles] Univ Space Res Assoc, NSSTC, Huntsville, AL 35805 USA.
[Lichti, Giselher; Bissaldi, Elisabetta; Diehl, Roland; Greiner, Jochen; Von Kienlin, Andreas; Steinle, Helmut] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany.
[Bhat, P. N.; Briggs, Michael S.; Connaughton, Valerie; Paciesas, W. S.; Preece, Robert; Wilson, Robert B.] Univ Alabama, NSSTC, Huntsville, AL 35805 USA.
[Fishman, Gerald; Kouveliotou, Chryssa; Wilson-Hodge, Colleen] NASA, Space Sci Off, George C Marshall Space Flight Ctr, VP62, Huntsville, AL 35812 USA.
[Hoover, Andrew S.; Kippen, R. Marc; Wallace, Mark S.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[McBreen, Sheila] Natl Univ Ireland Univ Coll Dublin, Dublin 4, Ireland.
RP Meegan, C (reprint author), Univ Space Res Assoc, NSSTC, 320 Sparkman Dr, Huntsville, AL 35805 USA.
RI Bissaldi, Elisabetta/K-7911-2016;
OI Bissaldi, Elisabetta/0000-0001-9935-8106; Preece,
Robert/0000-0003-1626-7335; McBreen, Sheila/0000-0002-1477-618X
NR 31
TC 369
Z9 371
U1 0
U2 11
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0004-637X
J9 ASTROPHYS J
JI Astrophys. J.
PD SEP 1
PY 2009
VL 702
IS 1
BP 791
EP 804
DI 10.1088/0004-637X/702/1/791
PG 14
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 487BD
UT WOS:000269244500065
ER
PT J
AU Comerford, JM
Griffith, RL
Gerke, BF
Cooper, MC
Newman, JA
Davis, M
Stern, D
AF Comerford, Julia M.
Griffith, Roger L.
Gerke, Brian F.
Cooper, Michael C.
Newman, Jeffrey A.
Davis, Marc
Stern, Daniel
TI 1.75 h(-1) kpc SEPARATION DUAL ACTIVE GALACTIC NUCLEI AT z=0.36 IN THE
COSMOS FIELD
SO ASTROPHYSICAL JOURNAL LETTERS
LA English
DT Article
DE galaxies: active; galaxies: individual (COSMOS J100043.15+020637.2);
galaxies: interactions; galaxies: nuclei
ID SUPERMASSIVE BLACK-HOLES; DIGITAL SKY SURVEY; SPACE-TELESCOPE; HOST
GALAXIES; REDSHIFT SURVEY; DISCOVERY; EMISSION; SYSTEM; CLASSIFICATION;
SELECTION
AB We present strong evidence for dual active galactic nuclei (AGNs) in the z = 0.36 galaxy COSMOS J100043.15+020637.2. COSMOS Hubble Space Telescope (HST) imaging of the galaxy shows a tidal tail, indicating that the galaxy recently underwent a merger, as well as two bright point sources near the galaxy's center. The luminosities of these sources (derived from the HST image) and their emission line flux ratios (derived from Keck/DEIMOS slit spectroscopy) suggest that both are AGNs and not star-forming regions or supernovae. Observations from zCOSMOS, the Sloan Digital Sky Survey, XMM-Newton, Spitzer, and the Very Large Array fortify the evidence for AGN activity. With HST imaging we measure a projected spatial offset between the two AGNs of 1.75 +/- 0.03 h(-1) kpc, and with DEIMOS we measure a 150 +/- 40 km s(-1) line-of-sight velocity offset between the two AGNs. Combined, these observations provide substantial evidence that COSMOS J100043.15+020637.2 is a merger-remnant galaxy with dual AGNs.
C1 [Comerford, Julia M.; Davis, Marc] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA.
[Griffith, Roger L.; Stern, Daniel] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.
[Gerke, Brian F.] Stanford Linear Accelerator Ctr, Kavli Inst Particle Astrophys & Cosmol, Menlo Pk, CA 94724 USA.
[Cooper, Michael C.] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA.
[Newman, Jeffrey A.] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA.
[Davis, Marc] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
RP Comerford, JM (reprint author), Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA.
NR 45
TC 69
Z9 69
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 2041-8205
J9 ASTROPHYS J LETT
JI Astrophys. J. Lett.
PD SEP 1
PY 2009
VL 702
IS 1
BP L82
EP L86
DI 10.1088/0004-637X/702/1/L82
PG 5
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 484NR
UT WOS:000269053200018
ER
PT J
AU Veneziani, M
Amblard, A
Cooray, A
Piacentini, F
Pietrobon, D
Serra, P
Ade, PAR
Bock, JJ
Bond, JR
Borrill, J
Boscaleri, A
Cabella, P
Contaldi, CR
Crill, BP
de Bernardis, P
De Gasperis, G
de Oliveira-Costa, A
De Troia, G
Di Stefano, G
Ganga, KM
Hivon, E
Jones, WC
Kisner, TS
Lange, AE
MacTavish, CJ
Masi, S
Mauskopf, PD
Melchiorri, A
Montroy, TE
Natoli, P
Netterfield, CB
Pascale, E
Polenta, G
Ricciardi, S
Romeo, G
Ruhl, JE
Santini, P
Tegmark, M
Vittorio, N
AF Veneziani, M.
Amblard, A.
Cooray, A.
Piacentini, F.
Pietrobon, D.
Serra, P.
Ade, P. A. R.
Bock, J. J.
Bond, J. R.
Borrill, J.
Boscaleri, A.
Cabella, P.
Contaldi, C. R.
Crill, B. P.
de Bernardis, P.
De Gasperis, G.
de Oliveira-Costa, A.
De Troia, G.
Di Stefano, G.
Ganga, K. M.
Hivon, E.
Jones, W. C.
Kisner, T. S.
Lange, A. E.
MacTavish, C. J.
Masi, S.
Mauskopf, P. D.
Melchiorri, A.
Montroy, T. E.
Natoli, P.
Netterfield, C. B.
Pascale, E.
Polenta, G.
Ricciardi, S.
Romeo, G.
Ruhl, J. E.
Santini, P.
Tegmark, M.
Vittorio, N.
TI SUBDEGREE SUNYAEV-ZEL'DOVICH SIGNAL FROM MULTIFREQUENCY BOOMERANG
OBSERVATIONS
SO ASTROPHYSICAL JOURNAL LETTERS
LA English
DT Article
DE cosmic microwave background; cosmological parameters; cosmology:
observations; large-scale structure of universe
ID MICROWAVE BACKGROUND-RADIATION; POWER SPECTRUM; ANISOTROPY POWER; 2003
FLIGHT; MAPS; CLUSTERS; FLUCTUATIONS; TEMPERATURE; PLANCK
AB The Sunyaev-Zel'dovich (SZ) effect is the inverse Compton-scattering of cosmic microwave background (CMB) photons by hot electrons in the intervening gas throughout the universe. The effect has a distinct spectral signature that allows its separation from other signals in multifrequency CMB data sets. Using CMB anisotropies measured at three frequencies by the BOOMERanG 2003 flight we constrain SZ fluctuations in the 10 arcmin to 1 deg angular range. Propagating errors and potential systematic effects through simulations, we obtain an overall upper limit of 15.3 mu K (2 sigma) for rms SZ fluctuations in a broad bin between multipoles of 250 and 1200 at the Rayleigh-Jeans (RJ) end of the spectrum. The resulting upper limit on the local universe normalization of the density perturbations with BOOMERanG SZ data alone is sigma(SZ)(8) < 1.14 at the 95% confidence level. When combined with other CMB anisotropy and SZ measurements, we find sigma(SZ)(8) < 0.92 (95% c. l.).
C1 [Veneziani, M.; Amblard, A.; Cooray, A.; Serra, P.] Univ Calif Irvine, Ctr Cosmol, Irvine, CA 92697 USA.
[Veneziani, M.; Piacentini, F.; de Bernardis, P.; Masi, S.; Melchiorri, A.; Polenta, G.; Ricciardi, S.; Santini, P.] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy.
[Veneziani, M.; Ganga, K. M.] Univ Paris Diderot, APC, F-75013 Paris, France.
[Pietrobon, D.; Cabella, P.; De Gasperis, G.; De Troia, G.; Natoli, P.; Vittorio, N.] Univ Roma Tor Vergata, Dipartimento Fis, I-00173 Rome, Italy.
[Pietrobon, D.] Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 2UP, Hants, England.
[Ade, P. A. R.; Mauskopf, P. D.] Cardiff Univ, Dept Phys & Astron, Cardiff, S Glam, Wales.
[Bock, J. J.; Crill, B. P.; Lange, A. E.] Jet Prop Lab, Pasadena, CA 91109 USA.
[Bock, J. J.; Crill, B. P.] CALTECH, Pasadena, CA 91125 USA.
[Bond, J. R.] Univ Toronto, CITA, Toronto, ON M5S 3H8, Canada.
[Borrill, J.] LBNL, Computat Res Div, Berkeley, CA 94720 USA.
[Boscaleri, A.] IFAC CNR, I-50127 Florence, Italy.
[Contaldi, C. R.] Univ London Imperial Coll Sci Technol & Med, Theoret Phys Grp, London, England.
[de Oliveira-Costa, A.; Tegmark, M.] MIT, Dept Phys, Cambridge, MA 02139 USA.
[De Troia, G.; Romeo, G.] Ist Nazl Geofis & Vulcanol, I-00143 Rome, Italy.
[Hivon, E.] Inst Astrophys, F-75014 Paris, France.
[Jones, W. C.] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA.
[Kisner, T. S.; Montroy, T. E.; Ruhl, J. E.] Case Western Reserve Univ, Cleveland, OH 44106 USA.
[MacTavish, C. J.] Univ London Imperial Coll Sci Technol & Med, Astrophys Grp, London, England.
[Netterfield, C. B.; Pascale, E.] Univ Toronto, Dept Phys, Toronto, ON, Canada.
[Polenta, G.] ESRIN, ASI Sci Data Ctr, I-00044 Frascati, Italy.
[Polenta, G.] INAF, Osservatorio Astron Roma, Monte Porzio Catone, Italy.
[Ricciardi, S.] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.
RP Veneziani, M (reprint author), Univ Calif Irvine, Ctr Cosmol, Irvine, CA 92697 USA.
EM marcella.veneziani@roma1.infn.it; amblard@uci.edu
RI de Gasperis, Giancarlo/C-8534-2012; Serra, Paolo/G-9678-2014; amblard,
alexandre/L-7694-2014; Piacentini, Francesco/E-7234-2010;
OI Santini, Paola/0000-0002-9334-8705; de Gasperis,
Giancarlo/0000-0003-2899-2171; Serra, Paolo/0000-0002-7609-3931;
Ricciardi, Sara/0000-0002-3807-4043; amblard,
alexandre/0000-0002-2212-5395; Piacentini,
Francesco/0000-0002-5444-9327; Masi, Silvia/0000-0001-5105-1439; de
Bernardis, Paolo/0000-0001-6547-6446; ROMEO,
Giovanni/0000-0002-5535-7803; Polenta, Gianluca/0000-0003-4067-9196;
Melchiorri, Alessandro/0000-0001-5326-6003; Hivon,
Eric/0000-0003-1880-2733
FU NSF [AST-0645427]; Italian Space Agency [I/087/06/0, I/016/07/0];
Programma Nazionale Ricerche in Antartide
FX We gratefully acknowledge support from NSF CAREER AST-0645427 at UCI. We
also acknowledge support from the Italian Space Agency (contracts
I/087/06/0 and I/016/07/0), and from Programma Nazionale Ricerche in
Antartide. The authors acknowledge the use of the Planck Sky Model,
developed by theComponent SeparationWorking Group (WG2) of the Planck
Collaboration.
NR 34
TC 8
Z9 8
U1 0
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 2041-8205
EI 2041-8213
J9 ASTROPHYS J LETT
JI Astrophys. J. Lett.
PD SEP 1
PY 2009
VL 702
IS 1
BP L61
EP L65
DI 10.1088/0004-637X/702/1/L61
PG 5
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 484NR
UT WOS:000269053200014
ER
PT J
AU Zhang, YX
Dubey, MK
AF Zhang, Yongxin
Dubey, Manvendra K.
TI Comparisons of WRF/Chem simulated O-3 concentrations in Mexico City with
ground-based RAMA measurements during the MILAGRO period
SO ATMOSPHERIC ENVIRONMENT
LA English
DT Article
DE Ozone; WRF/Chem; Air quality; Mexico City
ID CHARACTERIZING OZONE PRODUCTION; FIELD CAMPAIGN; AIR-QUALITY;
METROPOLITAN-AREA; NORTH-AMERICA; GAP WINDS; MODEL; BASIN; PATTERNS;
DISPERSION
AB This work compares the WRF/Chem (Weather Research and Forecasting - Chemistry) simulated O-3 concentrations in the Mexico City Metropolitan Area (MCMA) with measurements from the ground-based RAMA network during the MILAGRO (Megacity Initiative: Local and Global Research Observations) period. The model resolves the observations reasonably well in terms of diurnal cycle and mean magnitude as reflected by high correlation coefficients and low root-mean-square errors. Stations located in the center of the MCMA generally exhibit higher correlation coefficients and lower model biases than those stations located in the peripheral of the MCMA. Large temporal variations in the observed and simulated O-3 concentrations are noted from station to station during the MILAGRO period. Sensitivity analyses Of O-3 concentrations to changes in NOx, and VOC emissions rates suggest that O-3 production in the MCMA is VOC-sensitive, and VOC-emissions reduction appears to be an effective strategy for reducing high surface O-3 concentrations in the MCMA. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Zhang, Yongxin] Univ Washington, Climate Impacts Grp, Seattle, WA 98105 USA.
[Dubey, Manvendra K.] Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA.
RP Zhang, YX (reprint author), Univ Washington, Climate Impacts Grp, 3737 Brooklyn Ave NE,Box 355672, Seattle, WA 98105 USA.
EM yongxin@u.washington.edu
RI Dubey, Manvendra/E-3949-2010
OI Dubey, Manvendra/0000-0002-3492-790X
FU Los Alamos National Laboratory [LDRD200500014DR]
FX This work was supported by the Los Alamos National Laboratory through
the Laboratory Directed Research Development (LDRD) Program (project
number LDRD200500014DR). The author would like to acknowledge the Molina
Center for Energy and the Environment for providing the emissions
inventory used in this study. Two anonymous reviewers are acknowledged
for their constructive comments and suggests in improving the
manuscript. We thank the National Center for Atmospheric Research's
Computational & Information Systems Laboratory for providing partial
computing time for this work. The Los Alamos National Laboratory is
operated by Los Alamos National Security, LLC., for the Department of
Energy.
NR 45
TC 11
Z9 13
U1 1
U2 3
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1352-2310
J9 ATMOS ENVIRON
JI Atmos. Environ.
PD SEP
PY 2009
VL 43
IS 30
BP 4622
EP 4631
DI 10.1016/j.atmosenv.2009.05.039
PG 10
WC Environmental Sciences; Meteorology & Atmospheric Sciences
SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
GA 500QS
UT WOS:000270319400012
ER
PT J
AU Chen, YT
Jakoncic, J
Parker, KA
Carpino, N
Nassar, N
AF Chen, Yunting
Jakoncic, Jean
Parker, Kathlyn A.
Carpino, Nick
Nassar, Nicolas
TI Structures of the Phosphorylated and VO3-Bound 2H-Phosphatase Domain of
Sts-2
SO BIOCHEMISTRY
LA English
DT Article
ID PROSTATIC-ACID-PHOSPHATASE; X-RAY-STRUCTURE; PHOSPHOHISTIDINE
INTERMEDIATE; PHOSPHOCARRIER PROTEIN; HISTIDINE PHOSPHATASE;
CRYSTAL-STRUCTURES; MECHANISM; VANADATE; FRUCTOSE-2,6-BISPHOSPHATASE;
REFINEMENT
AB The C-terminal domain of the suppressor of T cell receptor (TCR) signaling 1 and 2 (Sts-1 and -2) proteins has homology to the 2H-phosphatase family of enzymes. The phosphatase activity of the correspondent Sts-1 domain, Sts-1(PGM), is key for its ability to negatively regulate the signaling of membrane-bound receptors including TCR and the epidermal growth factor receptor (EGFR). A nucleophilic histidine, which is transiently phosphorylated during the phosphatase reaction, is essential for the activity. Here, we present the crystal structure of Sts-2(PGM) in the phosphorylated active form and bound to VO3, which represent structures of an intermediate and of a transition state analogue along the path of the dephosphorylation reaction. In the former structure, the proposed nucleophilic His366 Is the only phoshorylated, residue and is stabilized by several interactions with conserved basic residues within the active site. In the latter structure, the vanadium atom sits in the middle of a trigonal bipyramid formed by the three oxygen atoms of the VO3 molecule, atom NE2 of His366, and an apical water molecule W-a. The V-NE2 bond length (2.25 angstrom) suggests that VO3 is not covalently attached to His366 and that the reaction mechanism is partially associative. The two structures also suggest a role for Glu476 in activating a uniquely positioned water molecule. In both structures, the conformation of the active site is remarkably similar to the one seen in apo-Sts-2(PGM) suggesting that the spatial arrangement of the catalytic residues does not change during the dephosphorylation reaction.
C1 [Chen, Yunting; Nassar, Nicolas] SUNY Stony Brook, Dept Physiol & Biophys, Stony Brook, NY 11794 USA.
[Jakoncic, Jean] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Parker, Kathlyn A.] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA.
[Carpino, Nick] SUNY Stony Brook, Dept Mol Genet & Microbiol, Stony Brook, NY 11794 USA.
RP Nassar, N (reprint author), SUNY Stony Brook, Dept Physiol & Biophys, Basic Sci Tower, Stony Brook, NY 11794 USA.
EM nicolas.nassar@sunysb.edu
FU NIH [CA-115611]; DOD [NF060060]; Arthritis Foundation [LI07]; NIH-NIAID
[R21A1075176]; National Multiple Sclerosis Socitety through a
Collaborative MS Research Center Award [CA1044A1]; U.S. Department of
Energy [DE-AC02-98CH10886]; NIH/NIGMS [Y1 GM-0080-03]
FX Research in N.N.'s laboratory is supported in part by grants from the
NIH (CA-115611) and DOD (NF060060). Research in N.C.'s laboratory is
supported by grants from the Arthritis Foundation (LI07), NIH-NIAID
(R21A1075176), and The National Multiple Sclerosis Socitety through a
Collaborative MS Research Center Award (CA1044A1). Research carried out
at X6A beamline, National Synchrotron Light Source, Brookhaven National
Laboratory, is supported by the U.S. Department of Energy under contract
# DE-AC02-98CH10886. X6A is funded by NIH/NIGMS under agreement Y1
GM-0080-03.
NR 38
TC 6
Z9 6
U1 0
U2 5
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0006-2960
J9 BIOCHEMISTRY-US
JI Biochemistry
PD SEP 1
PY 2009
VL 48
IS 34
BP 8129
EP 8135
DI 10.1021/bi9008648
PG 7
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 485SR
UT WOS:000269144900005
PM 19627098
ER
PT J
AU Laird, DA
Brown, RC
Amonette, JE
Lehmann, J
AF Laird, David A.
Brown, Robert C.
Amonette, James E.
Lehmann, Johannes
TI Review of the pyrolysis platform for coproducing bio-oil and biochar
SO BIOFUELS BIOPRODUCTS & BIOREFINING-BIOFPR
LA English
DT Review
DE pyrolysis; bio-oil; biochar; biomass; carbon sequestration; soil
quality; agriculture; Terra Preta
ID SOIL ORGANIC-MATTER; BLACK CARBON; CHEMICAL-PROPERTIES; BIOMASS
PYROLYSIS; THERMOCHEMICAL CONVERSION; CHARCOAL; BIOENERGY; YIELD;
RESIDUES; GROWTH
AB Pyrolysis is a relatively simple, inexpensive, and robust thermochemical technology for transforming biomass into bio-oil, biochar, and syngas. The robust nature of the pyrolysis technology, which allows considerable flexibility in both the type and quality of the biomass feedstock, combined with a distributed network of small pyrolysis plants, would be compatible with existing agriculture and forestry infrastructure. Bio-oil can be used as a fuel in existing industrial boilers. Biochar can be used with existing infrastructure as a replacement for pulverized coal; however, use of biochar as a soil amendment results in significant environmental and agronomic benefits. Soil application of biochar is a means of sequestering large amounts of C and may have other greenhouse gas benefits. Preliminary reports of the impact of soil biochar applications on crop yields indicate that biochar quality is very important. Biochar is an effective adsorbent for both nutrients and organic contaminants, hence the presence of biochar in soils has been shown to improve water quality in column leaching and field lysimeters studies and it is anticipated to do the same for agricultural watersheds.
The pyrolysis platform for producing bio-oil and biochar from biomass appears to be a practical, effective, and environmentally sustainable means of producing large quantities of renewable bioenergy while simultaneously reducing emissions of greenhouse gases. At the present time, the pyrolysis platform is economically marginal because markets for bio-oil and biochar are highly competitive. However, if the USA adopts a program for controlling greenhouse gases, the pyrolysis platform would be highly competitive. Published in 2009 by John Wiley & Sons, Ltd.
C1 [Laird, David A.] ARS, USDA, Natl Soil Tilth Lab, Ames, IA 50011 USA.
[Brown, Robert C.] Iowa State Univ, Ames, IA USA.
[Amonette, James E.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Lehmann, Johannes] Cornell Univ, Ithaca, NY USA.
RP Laird, DA (reprint author), ARS, USDA, Natl Soil Tilth Lab, 2110 Univ Blvd, Ames, IA 50011 USA.
EM david.laird@ars.usda.gov
RI Laird, David/E-8598-2014; Lehmann, Johannes/H-2682-2014
OI Lehmann, Johannes/0000-0002-4701-2936
NR 75
TC 198
Z9 230
U1 14
U2 260
PU JOHN WILEY & SONS LTD
PI CHICHESTER
PA THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND
SN 1932-104X
J9 BIOFUEL BIOPROD BIOR
JI Biofuels Bioprod. Biorefining
PD SEP-OCT
PY 2009
VL 3
IS 5
BP 547
EP 562
DI 10.1002/bbb.169
PG 16
WC Biotechnology & Applied Microbiology; Energy & Fuels
SC Biotechnology & Applied Microbiology; Energy & Fuels
GA 531GP
UT WOS:000272652600012
ER
PT J
AU Markowitz, VM
Mavromatis, K
Ivanova, NN
Chen, IMA
Chu, K
Kyrpides, NC
AF Markowitz, Victor M.
Mavromatis, Konstantinos
Ivanova, Natalia N.
Chen, I-Min A.
Chu, Ken
Kyrpides, Nikos C.
TI IMG ER: a system for microbial genome annotation expert review and
curation
SO BIOINFORMATICS
LA English
DT Article
ID DATABASE; SEQUENCE; PROJECT; ENZYMES
AB Motivation: A rapidly increasing number of microbial genomes are sequenced by organizations worldwide and are eventually included into various public genome data resources. The quality of the annotations depends largely on the original dataset providers, with erroneous or incomplete annotations often carried over into the public resources and difficult to correct.
Results: We have developed an Expert Review (ER) version of the Integrated Microbial Genomes (IMG) system, with the goal of supporting systematic and efficient revision of microbial genome annotations. IMG ER provides tools for the review and curation of annotations of both new and publicly available microbial genomes within IMG's rich integrated genome framework. New genome datasets are included into IMG ER prior to their public release either with their native annotations or with annotations generated by IMG ER's annotation pipeline. IMG ER tools allow addressing annotation problems detected with IMG's comparative analysis tools, such as genes missed by gene prediction pipelines or genes without an associated function. Over the past year, IMG ER was used for improving the annotations of about 150 microbial genomes.
C1 [Markowitz, Victor M.; Chen, I-Min A.; Chu, Ken] Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA.
[Mavromatis, Konstantinos; Ivanova, Natalia N.; Kyrpides, Nikos C.] DOE Joint Genome Inst, Genome Biol Program, Walnut Creek, CA 94598 USA.
RP Markowitz, VM (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA.
EM vmmarkowitz@lbl.gov
RI Kyrpides, Nikos/A-6305-2014
OI Kyrpides, Nikos/0000-0002-6131-0462
FU US Department of Energy [DE-AC02-05CH11231]
FX Director, Office of Science, Office of Biological and Environmental
Research, Life Sciences Division, US Department of Energy, under
Contract No. DE-AC02-05CH11231.
NR 27
TC 492
Z9 492
U1 4
U2 30
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 1367-4803
J9 BIOINFORMATICS
JI Bioinformatics
PD SEP 1
PY 2009
VL 25
IS 17
BP 2271
EP 2278
DI 10.1093/bioinformatics/btp393
PG 8
WC Biochemical Research Methods; Biotechnology & Applied Microbiology;
Computer Science, Interdisciplinary Applications; Mathematical &
Computational Biology; Statistics & Probability
SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology;
Computer Science; Mathematical & Computational Biology; Mathematics
GA 486KX
UT WOS:000269196000019
PM 19561336
ER
PT J
AU Roiser, JP
Levy, J
Fromm, SJ
Nugent, AC
Talagala, SL
Hasler, G
Henn, FA
Sahakian, BJ
Drevets, WC
AF Roiser, Jonathan P.
Levy, Jamey
Fromm, Stephen J.
Nugent, Allison C.
Talagala, S. Lalith
Hasler, Gregor
Henn, Fritz A.
Sahakian, Barbara J.
Drevets, Wayne C.
TI The Effects of Tryptophan Depletion on Neural Responses to Emotional
Words in Remitted Depression
SO BIOLOGICAL PSYCHIATRY
LA English
DT Article
DE Acute tryptophan depletion; Affective Go/No-go (AGNG); depression;
emotional processing; functional magnetic resonance imaging (fMRI);
serotonin
ID POSITRON-EMISSION-TOMOGRAPHY; MEDIAL PREFRONTAL CORTEX; VENTRAL
TEGMENTAL AREA; LATERAL HABENULA; HEALTHY-VOLUNTEERS;
BEHAVIORAL-RESPONSES; UNMEDICATED PATIENTS; MONOAMINE DEPLETION;
SEROTONIN FUNCTION; PLASMA TRYPTOPHAN
AB Background: Major depressive disorder (MDD) has been associated with both dysfunction of the central serotonergic system and abnormal responses to emotional stimuli. We used acute tryptophan depletion (ATD) to investigate the effect of temporarily reducing brain serotonin synthesis on neural and behavioral responses to emotional stimuli in remitted MDD subjects (rMDD) and healthy control subjects.
Methods: Twenty control subjects and 23 rMDD subjects who had been unmedicated and in remission for >= 3 months completed the study. Following tryptophan or sham depletion, participants performed an emotional-processing task during functional magnetic resonance imaging. In addition, resting state regional blood flow was measured using arterial spin labeling.
Results: Neither group exhibited significant mood change following ATD. However, tryptophan depletion differentially affected the groups in terms of hemodynamic responses to emotional words in a number of structures implicated in the pathophysiology of MDD, including medial thalamus and caudate. These interactions were driven by increased responses to emotional words in the control subjects, with little effect in the patients under the ATD condition. Following ATD, habenula blood flow increased significantly in the rMDD subjects relative to the control subjects, and increasing amygdala blood flow was associated with more negative emotional bias score across both groups.
Conclusions: These data provide evidence for elevated habenula blood flow and alterations in the neural processing of emotional stimuli following ATD in rMDD subjects, even in the absence of overt mood change. However, further studies are required to determine whether these findings represent mechanisms of resilience or vulnerability to MDD.
C1 [Roiser, Jonathan P.] UCL, Inst Cognit Neurosci, London WC1N 3AR, England.
[Roiser, Jonathan P.; Levy, Jamey; Fromm, Stephen J.; Nugent, Allison C.; Hasler, Gregor; Drevets, Wayne C.] NIMH, Sect Neuroimaging Mood & Anxiety Disorders, NIH, Bethesda, MD 20892 USA.
[Talagala, S. Lalith] NINDS, NIH, MRI Res Facil, Bethesda, MD 20892 USA.
[Henn, Fritz A.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Roiser, Jonathan P.; Sahakian, Barbara J.] Univ Cambridge, Addenbrookes Hosp, Dept Psychiat, Cambridge CB2 2QQ, England.
[Sahakian, Barbara J.] Wellcome Trust Behav & Clin Neurosci Inst, MRC, Cambridge, England.
RP Roiser, JP (reprint author), UCL, Inst Cognit Neurosci, 17 Queen Sq, London WC1N 3AR, England.
EM j.roiser@ucl.ac.uk
RI Roiser, Jonathan/A-1791-2010; Hasler, Gregor/E-4845-2012;
OI Hasler, Gregor/0000-0002-8311-0138; Nugent, Allison/0000-0003-2569-2480;
Levy, Jamey/0000-0002-7434-7213
FU National Institute of Mental Health (NIMH); National Institutes of
Health (NIH)
FX Supplementary material cited in this article is available online.
NR 62
TC 64
Z9 68
U1 2
U2 9
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0006-3223
J9 BIOL PSYCHIAT
JI Biol. Psychiatry
PD SEP 1
PY 2009
VL 66
IS 5
BP 441
EP 450
DI 10.1016/j.biopsych.2009.05.002
PG 10
WC Neurosciences; Psychiatry
SC Neurosciences & Neurology; Psychiatry
GA 488EC
UT WOS:000269330900006
PM 19539268
ER
PT J
AU Binder, JB
Gray, MJ
White, JF
Zhang, ZC
Holladay, JE
AF Binder, Joseph B.
Gray, Michel J.
White, James F.
Zhang, Z. Conrad
Holladay, Johnathan E.
TI Reactions of lignin model compounds in ionic liquids
SO BIOMASS & BIOENERGY
LA English
DT Article
DE Biomass; Lignin; Ionic liquid; Dealkylation; Phenols; Acid catalysis;
2-Methoxyphenol; Renewable
ID SUPERACID COAL CHEMISTRY; LEWIS-ACID CATALYSTS; LOW-RANK COAL; KRAFT
LIGNIN; TECHNICAL LIGNINS; SOLVOLYSIS LIGNIN; ALCELL PROCESS;
CONVERSION; PYROLYSIS; LIQUEFACTION
AB Lignin, a readily available form of biomass, is a potential source of renewable aromatic chemicals through catalytic conversion. Recent work has demonstrated that ionic liquids are excellent solvents for processing woody biomass and lignin. Seeking to exploit ionic liquids as media for depolymerization of lignin, we investigated reactions of lignin model compounds in these solvents. Using Bronsted acid catalysts in 1-ethyl-3-methyl-imidazolium triflate at moderate temperatures below 200 degrees C, we obtained up to 11.6% molar yield of the dealkylation product 2-methoxyphenol from the model compound 2-methoxy-4-(2-propenyl)phenol and cleaved 2-phenylethyl phenyl ether, a model for lignin ethers. Despite these successes, acid catalysis failed in dealkylation of the saturated-chain model compound 4-ethyl-2-methoxyphenol and did not produce monomeric products from organosolv lignin, demonstrating that further work is required to understand the complex chemistry of lignin depolymerization. (C) 2009 Published by Elsevier Ltd.
C1 [Gray, Michel J.; White, James F.; Holladay, Johnathan E.] Pacific NW Natl Lab, Inst Interfacial Catalysis, Richland, WA 99352 USA.
[Binder, Joseph B.] Univ Wisconsin, Dept Chem, Madison, WI 53706 USA.
[Zhang, Z. Conrad] KiOR, League City, TX 77573 USA.
RP Holladay, JE (reprint author), Pacific NW Natl Lab, Inst Interfacial Catalysis, POB 999, Richland, WA 99352 USA.
EM john.holladay@pnl.gov
FU Air Force Office of Scientific Research; NSF Graduate Research
Fellowship; Laboratory Directed Research and Development Program at the
Pacific Northwest National Laboratory (PNNL); U.S. Department of Energy
[DE-AC06-76RL01830]
FX J.B.B. was supported by an NDSEG Fellowship sponsored by the Air Force
Office of Scientific Research and an NSF Graduate Research Fellowship.
This work was supported by the Laboratory Directed Research and
Development Program at the Pacific Northwest National Laboratory (PNNL),
a multiprogram national laboratory operated by Battelle for the U.S.
Department of Energy under Contract DE-AC06-76RL01830.
NR 49
TC 104
Z9 109
U1 13
U2 136
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0961-9534
J9 BIOMASS BIOENERG
JI Biomass Bioenerg.
PD SEP
PY 2009
VL 33
IS 9
BP 1122
EP 1130
DI 10.1016/j.biombioe.2009.03.006
PG 9
WC Agricultural Engineering; Biotechnology & Applied Microbiology; Energy &
Fuels
SC Agriculture; Biotechnology & Applied Microbiology; Energy & Fuels
GA 493IT
UT WOS:000269730700004
ER
PT J
AU Wu, LZ
Serpersu, EH
AF Wu, Lingzhi
Serpersu, Engin H.
TI Deciphering Interactions of the Aminoglycoside Phosphotransferase(3
')-IIIa with its Ligands
SO BIOPOLYMERS
LA English
DT Article
DE Aminoglycosides; antibiotic resistance; thermodynamics; enzyme-ligand
interactions; phosphoryl transfer reaction
ID ANTIBIOTIC-RESISTANCE ENZYME; METAL-ION-BINDING; BROAD-SPECTRUM;
ACTIVE-SITE; MECHANISM; 3-PHOSPHOTRANSFERASE; IIIA; NMR; RNA;
RECOGNITION
AB Aminoglycoside phosphotransferase(3')-IIIa (APH) is the enzyme with broadest substrate range among the phosphotransferases that cause resistance to aminoglycoside antibiotics. In this study, the thermodynamic characterization of interactions of APH with its ligands are done by determining dissociation constants Of enzyme-substrate complexes using electron paramagnetic resonance and fluorescence spectroscopy. Metal binding studies showed that three divalent cations bind to the apo-enzyme with low affinity. In the presence of AMPPCP, binding of the divalent cations occurs with 7-to-37-fold higher affinity to three additional sites dependent on the presence and absence of different aminoglycosides. Surprisingly, when both ligands, AMPPCP and aminoglycoside, are present, the number of high affinity metal binding sites is reduced to two with a 2-fold increase in binding affinity. The presence of divalent cations, with or without aminoglycoside present, shows only a small effect (<3-fold) on binding affinity of the nucleotide to the enzyme. The presence of metal-nucleotide, but not nucleotide alone, increases the binding affinity of aminoglycosides to APH. Replacement of magnesium (II) with manganese (II) lowered the catalytic rates significantly while affecting the substrate selectivity of the enzyme such that the aminoglycosides with 2'-NH(2) become better substrates (higher V(max)) than those with 2'-OH. (C) 2009 Wiley Periodicals, Inc. Biopolymers 91: 801-809, 2009.
C1 [Wu, Lingzhi; Serpersu, Engin H.] Univ Tennessee, Dept Biochem & Cellular & Mol Biol, Knoxville, TN 37996 USA.
[Wu, Lingzhi] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China.
[Wu, Lingzhi] Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China.
[Serpersu, Engin H.] Univ Tennessee, Grad Sch Genome Sci & Technol, Knoxville, TN 37996 USA.
[Serpersu, Engin H.] Oak Ridge Natl Lab, Knoxville, TN 37996 USA.
RP Serpersu, EH (reprint author), Univ Tennessee, Dept Biochem & Cellular & Mol Biol, Knoxville, TN 37996 USA.
EM Serpersu@utk.edu
FU National Science Foundation [MCB 01110741]; Center of Excellence for
Structural Biology it the University of Tennessee, China Scholarship
Council
FX Contract grant sponsor: The National Science Foundation Contract grant
number: MCB 01110741. Contract grant Sponsors: The Center of Excellence
for Structural Biology it the University of Tennessee, China Scholarship
Council.
NR 28
TC 9
Z9 9
U1 0
U2 6
PU JOHN WILEY & SONS INC
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN, NJ 07030 USA
SN 0006-3525
J9 BIOPOLYMERS
JI Biopolymers
PD SEP
PY 2009
VL 91
IS 9
BP 801
EP 809
DI 10.1002/bip.21251
PG 9
WC Biochemistry & Molecular Biology; Biophysics
SC Biochemistry & Molecular Biology; Biophysics
GA 475FC
UT WOS:000268342800011
PM 19437437
ER
PT J
AU Shen, YF
Tang, J
Nie, ZH
Wang, YD
Ren, Y
Zuo, L
AF Shen, Y. F.
Tang, J.
Nie, Z. H.
Wang, Y. D.
Ren, Y.
Zuo, L.
TI Tailoring size and structural distortion of Fe3O4 nanoparticles for the
purification of contaminated water
SO BIORESOURCE TECHNOLOGY
LA English
DT Article
DE Fe3O4 nanoparticles; Magnetic property; Wastewater; Toxic ions;
Adsorption capacity
ID RAYON WASTE EFFLUENT; MAGNETITE NANOPARTICLES; RECOVERY; REMOVAL;
ADSORPTION; TECHNOLOGY; CR(VI); SLUDGE; IONS; ZINC
AB Fe3O4 magnetic nanoparticles with different particle sizes were synthesized using two methods, i.e.. a co-precipitation process and a polyol process, respectively. The atomic pair distribution analyses from the high-energy X-ray scattering data and TEM observations show that the two kinds of nanoparticles have different sizes and structural distortions. An average particle size of 6-8 nm with a narrow size distribution was observed for the nanoparticles prepared with the co-precipitation method. Magnetic measurements show that those particles are in ferromagnetic state with a saturation magnetization of 74.3 emu g(-1). For the particles synthesized with the polyol process, a mean diameter of 18-35 nm was observed with a saturation magnetization of 78.2 emu g(-1). Although both kinds of nanoparticles are well crystallized, an obviously higher structural distortion is evidenced for the co-precipitation processed nanoparticles. The synthesized Fe3O4 particles with different mean particle size were used for treating the wastewater contaminated with the metal ions, such as Ni(II), Cu(II), Cd(II) and Cr(VI). It is found that the adsorption capacity of Fe3O4 particles increased with decreasing the particle size or increasing the Surface area. While the particle size was decreased to 8 nm, the Fe3O4 particles can absorb almost all of the above-mentioned metal ions in the contaminated water with the adsorption capacity of 34.93 mg/g, which is similar to 7 times higher than that using the coarse particles. We attribute the extremely high adsorption capacity to the highly-distorted surface. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Shen, Y. F.; Tang, J.; Nie, Z. H.; Wang, Y. D.; Zuo, L.] Northeastern Univ, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110004, Peoples R China.
[Shen, Y. F.; Tang, J.] Northeastern Univ, Sch Met & Mat, Shenyang 110004, Peoples R China.
[Wang, Y. D.] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China.
[Ren, Y.] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA.
RP Shen, YF (reprint author), Northeastern Univ, Key Lab Anisotropy & Texture Mat, Minist Educ, 3 Wenhua Rd, Shenyang 110004, Peoples R China.
EM Shenyf@smm.neu.edu.cn
RI Nie, Zhihua/G-9459-2013; wang, yandong/G-9404-2013
OI Nie, Zhihua/0000-0002-2533-933X;
FU National Natural Science Foundation of China [75102210]; Program for
Changjiang Scholars and Innovative Research Team in University
[IRT0731]; Ministry of Education of China; US Department of Energy
[DE-AC02-06CH11357]
FX This research is supported by the National Natural Science Foundation of
China (Grant No. 75102210) and the Program for Changjiang Scholars and
Innovative Research Team in University (IRT0731) supported by the
Ministry of Education of China. J.N. Deng is gratefully acknowledged for
his help with TEM observations. Use of the Advanced Photon Source was
Supported by the US Department of Energy, Office of Science, Office of
Basic Energy Science, under Contract No. DE-AC02-06CH11357.
NR 29
TC 64
Z9 71
U1 2
U2 35
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0960-8524
J9 BIORESOURCE TECHNOL
JI Bioresour. Technol.
PD SEP
PY 2009
VL 100
IS 18
BP 4139
EP 4146
DI 10.1016/j.biortech.2009.04.004
PG 8
WC Agricultural Engineering; Biotechnology & Applied Microbiology; Energy &
Fuels
SC Agriculture; Biotechnology & Applied Microbiology; Energy & Fuels
GA 457WE
UT WOS:000266964400013
PM 19414249
ER
PT J
AU Singh, S
Simmons, BA
Vogel, KP
AF Singh, Seema
Simmons, Blake A.
Vogel, Kenneth P.
TI Visualization of Biomass Solubilization and Cellulose Regeneration
During Ionic Liquid Pretreatment of Switchgrass
SO BIOTECHNOLOGY AND BIOENGINEERING
LA English
DT Article
DE biofuels; biomass; ionic liquids; pretreatment
ID DILUTE-ACID PRETREATMENT; ENZYMATIC-HYDROLYSIS; CORN STOVER;
1-N-BUTYL-3-METHYLIMIDAZOLIUM CHLORIDE; LIGNOCELLULOSIC MATERIALS; REED
CANARYGRASS; LIGNIN; DISSOLUTION; BIOFUELS; WOOD
AB Auto-fluorescent mapping of plant cell, walls was used to visualize cellulose and lignin in pristine switchgrass (Panicum virgatum) steins to determine the mechanisms of biomass dissolution during ionic liquid pretreatment. The addition of ground switchgrass to the ionic liquid 1-n-ethyl-3-methylimidazolium acetate resulted in the disruption and solubilization of the plant cell wall at mild temperatures. Swelling of the plant cell wall, attributed to disruption of inter- and intramolecular hydrogen bonding between cellulose fibrils and lignin, followed by complete dissolution of biomass, was observed without using imaging techniques that require staining, embedding, and processing of biomass. Subsequent cellulose regeneration via the addition of an anti-solvent, such as water, was observed in situ and provided direct evidence of significant rejection of lignin from the recovered polysaccharides. This observation was confirmed by chemical analysis of the regenerated cellulose. In comparison to untreated biomass, ionic liquid pretreated biomass produces cellulose that is efficiently hydrolyzed with commercial cellulase cocktail with high sugar yields over a relatively short time interval.
C1 [Singh, Seema; Simmons, Blake A.] Joint BioEnergy Inst, Deconstruct Div, Emeryville, CA USA.
[Singh, Seema; Simmons, Blake A.] Sandia Natl Labs, Biomass Sci & Convers Technol Dept, Livermore, CA USA.
[Vogel, Kenneth P.] Univ Nebraska, USDA ARS, Grain Forage & Bioenergy Res Unit, Lincoln, NE USA.
RP Simmons, BA (reprint author), Joint BioEnergy Inst, Deconstruct Div, Emeryville, CA USA.
EM basimmo@sandia.gov
OI Simmons, Blake/0000-0002-1332-1810
FU U.S. Department of Energy, Office of Science, Office of Biological and
Environmental Research [DE-AC02-05CH11231]
FX This work was part of the DOE Joint BioEnergy Institute
(http://www.jbei.org) supported by the U.S. Department of Energy, Office
of Science, Office of Biological and Environmental Research, through
contract DE-AC02-05CH11231 between Lawrence Berkeley National Laboratory
and the U.S. Department of Energy.
NR 42
TC 210
Z9 214
U1 13
U2 125
PU JOHN WILEY & SONS INC
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN, NJ 07030 USA
SN 0006-3592
J9 BIOTECHNOL BIOENG
JI Biotechnol. Bioeng.
PD SEP 1
PY 2009
VL 104
IS 1
BP 68
EP 75
DI 10.1002/bit.22386
PG 8
WC Biotechnology & Applied Microbiology
SC Biotechnology & Applied Microbiology
GA 485BZ
UT WOS:000269096800008
PM 19489027
ER
PT J
AU Tang, YJ
Martin, HG
Deutschbauer, A
Feng, XY
Huang, R
Llora, X
Arkin, A
Keasling, JD
AF Tang, Yinjie J.
Martin, Hector Garcia
Deutschbauer, Adam
Feng, Xueyang
Huang, Rick
Llora, Xavier
Arkin, Adam
Keasling, Jay D.
TI Invariability of Central Metabolic Flux Distribution in Shewanella
oneidensis MR-1 Under Environmental or Genetic Perturbations
SO BIOTECHNOLOGY PROGRESS
LA English
DT Article
DE growth rate; (13)C-based; transposon mutants; transcript; metabolite
profiles; secondary metabolism
ID GROWTH; PATHWAYS; GLUCOSE; STRESS
AB An environmentally important bacterium with versatile respiration, Shewanella oneidensis MR-1, displayed significantly different growth rates under three culture conditions: minimal medium (doubling time similar to 3 h), salt stressed minimal medium (doubling time similar to 6 h), and minimal medium with amino acid supplementation (doubling time similar to 1.5 h). (13)C-based metabolic flux analysis indicated that fluxes of central metabolic reactions remained relatively constant under the three growth conditions, which is in stark contrast to the reported significant changes in the transcript and metabolite profiles under various growth conditions. Furthermore, 10 transposon mutants of S. oneidensis MR-1 were randomly chosen from a transposon library and their flux distributions through central metabolic pathways were revealed to be identical, even though such mutational processes altered the secondary metabolism, for example, glycine and C1 (5,10-Me-THF) metabolism. (c) 2009 American Institute of Chemical Engineers Biotechnol. Prog., 25: 1254-1259, 2009
C1 [Martin, Hector Garcia; Keasling, Jay D.] Joint BioEnergy Inst, Fuels Synth Div, Emeryville, CA 94608 USA.
[Tang, Yinjie J.; Feng, Xueyang; Huang, Rick] Washington Univ, Dept Energy Environm & Chem Engn, St Louis, MO 63130 USA.
[Deutschbauer, Adam; Arkin, Adam; Keasling, Jay D.] Univ Calif Berkeley, Lawrence Berkeley Lab, Virtual Inst Microbial Stress & Survival, Berkeley, CA 94720 USA.
[Deutschbauer, Adam; Arkin, Adam; Keasling, Jay D.] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
[Arkin, Adam; Keasling, Jay D.] Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA.
[Keasling, Jay D.] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA.
[Llora, Xavier] Univ Illinois, Natl Ctr Supercomp Applicat, Urbana, IL 61801 USA.
RP Keasling, JD (reprint author), Joint BioEnergy Inst, Fuels Synth Div, 5885 Hollis, Emeryville, CA 94608 USA.
EM keasling@berkeley.edu
RI Garcia Martin, Hector/B-5357-2009; Keasling, Jay/J-9162-2012; Feng,
Xueyang/G-1295-2015; Arkin, Adam/A-6751-2008;
OI Garcia Martin, Hector/0000-0002-4556-9685; Keasling,
Jay/0000-0003-4170-6088; Arkin, Adam/0000-0002-4999-2931; Feng,
Xueyang/0000-0003-4426-5732
FU U.S. Department of Energy [DE-AC02-05CH11231]; Joint BioEnergy
Institute; I-CARES (International Center for Advanced Renewable Energy
and Sustainability) at Washington University in St Louis
FX This work is part of the Virtual Institute for Microbial Stress and
Survival (http://VIMSS.Ibl.gov) supported by the U.S. Department of
Energy, Office of Science, Office of Biological and Environmental
Research, Genomics:GTL Program through contract DE-AC02-05CH11231
between the Lawrence Berkeley National Laboratory and the US Department
of Energy. This work is also supported by the Joint BioEnergy Institute
to JDK, and I-CARES (International Center for Advanced Renewable Energy
and Sustainability) at Washington University in St Louis to YJT.
NR 28
TC 12
Z9 14
U1 1
U2 9
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 8756-7938
J9 BIOTECHNOL PROGR
JI Biotechnol. Prog.
PD SEP-OCT
PY 2009
VL 25
IS 5
BP 1254
EP 1259
DI 10.1002/btpr.227
PG 6
WC Biotechnology & Applied Microbiology; Food Science & Technology
SC Biotechnology & Applied Microbiology; Food Science & Technology
GA 521UO
UT WOS:000271950200005
PM 19610125
ER
PT J
AU Weigelt, B
Kreike, B
Reis, JS
AF Weigelt, Britta
Kreike, Bas
Reis-Filho, Jorge S.
TI Metaplastic breast carcinomas are basal-like breast cancers: a genomic
profiling analysis
SO BREAST CANCER RESEARCH AND TREATMENT
LA English
DT Article
DE Microarrays; Expression profile; Basal-like; Epithelial to mesenchymal
transition; Breast cancer
ID EPITHELIAL-MESENCHYMAL TRANSITION; SITU HYBRIDIZATION ANALYSIS;
SQUAMOUS-CELL CARCINOMA; MAMMARY STEM-CELLS; MOLECULAR PORTRAITS;
IDENTIFICATION; EXPRESSION; PHENOTYPE; SUBTYPE; TUMORS
AB Background Metaplastic breast carcinomas (MBCs) comprise a group of aggressive and chemotherapy resistant cancers characterised by neoplastic cells displaying differentiation towards squamous epithelium or mesenchymal elements. Previous histopathological and immunohistochemical analysis of MBCs suggested that these cancers would have a basal-like profile. Methods We investigated the molecular subtype of 20 MBCs using microarray-based expression profiling data. These data were compared with those of 79 invasive ductal carcinomas (IDCs) of basal-like phenotype by unsupervised hierarchical clustering, supervised analysis and pathway analysis. Results We demonstrate that 95% of all MBCs are of basal-like molecular subtype. Furthermore, unsupervised hierarchical clustering analysis and pathway analysis of the profiles of MBCs revealed that MBCs are part of the spectrum of basal-like breast cancers. Significance analysis of microarrays (SAM) identified 1,385 transcripts differentially expressed between MBCs and IDCs of basal-like phenotype. Pathway analysis using these genes revealed that DNA repair pathways, including BRCA1 pathway, PTEN, a gene whose loss of function is associated with resistance to chemotherapy, and TOP2A, the molecular target of anthracyclines, are significantly downregulated in MBCs compared to basal-like IDCs. These findings may at least in part explain the reported poor responses to chemotherapy of MBCs. Furthermore, MBCs showed significantly higher expression of genes related to myoepithelial differentiation and epithelial to mesenchymal transition (EMT). Conclusions Our results demonstrate that MBCs are part of the spectrum of basal-like breast carcinomas and display a myoepithelial and EMT-like molecular make-up. The reported poorer response to chemotherapeutic agents in patients with MBCs may stem from downregulated DNA damage response pathways, PTEN and TOP2A.
C1 [Weigelt, Britta] Ernest Orlando Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA.
[Kreike, Bas] Netherlands Canc Inst, Amsterdam, Netherlands.
[Reis-Filho, Jorge S.] Inst Canc Res, Breakthrough Breast Canc Res Ctr, London SW3 6JB, England.
RP Weigelt, B (reprint author), Ernest Orlando Lawrence Berkeley Natl Lab, Div Life Sci, 1 Cyclotron Rd,MS-977-225A, Berkeley, CA 94720 USA.
EM bweigelt@lbl.gov; Jorge.reis-filho@icr.ac.uk
OI Kreike, Bas/0000-0003-0030-8200
FU Dutch Cancer Society; Breakthrough Breast Cancer
FX B. Weigelt is supported by a postdoctoral fellowship from the Dutch
Cancer Society (KWF). J. Reis-Filho is fully supported by Breakthrough
Breast Cancer.
NR 51
TC 96
Z9 102
U1 0
U2 3
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0167-6806
J9 BREAST CANCER RES TR
JI Breast Cancer Res. Treat.
PD SEP
PY 2009
VL 117
IS 2
BP 273
EP 280
DI 10.1007/s10549-008-0197-9
PG 8
WC Oncology
SC Oncology
GA 483XD
UT WOS:000269005500006
PM 18815879
ER
PT J
AU Richardson, J
AF Richardson, Jeff
TI Shifting from a nuclear triad to a nuclear dyad
SO BULLETIN OF THE ATOMIC SCIENTISTS
LA English
DT Article
AB A senior scientist at Lawrence Livermore National Laboratory outlines the rationale for retiring land-based ballistic missiles and leaving a strategic dyad of submarine-launched missiles and air-delivered weapons as the backbone of the U.S. nuclear arsenal.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Richardson, J (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU SAGE PUBLICATIONS INC
PI THOUSAND OAKS
PA 2455 TELLER RD, THOUSAND OAKS, CA 91320 USA
SN 0096-3402
J9 B ATOM SCI
JI Bull. Atom. Scient.
PD SEP-OCT
PY 2009
VL 65
IS 5
BP 33
EP 42
DI 10.2968/065005004
PG 10
WC International Relations; Social Issues
SC International Relations; Social Issues
GA 624JB
UT WOS:000279812500004
ER
PT J
AU Pappas, MJ
Congdon, JD
Brecke, BJ
Capps, JD
AF Pappas, M. J.
Congdon, J. D.
Brecke, B. J.
Capps, J. D.
TI Orientation and dispersal of hatchling Blanding's turtles (Emydoidea
blandingii) from experimental nests
SO CANADIAN JOURNAL OF ZOOLOGY-REVUE CANADIENNE DE ZOOLOGIE
LA English
DT Article
ID CHRYSEMYS-PICTA; COMPASS ORIENTATION; PAINTED TURTLE; SEA TURTLES;
MOVEMENTS; BEHAVIOR; TESTUDINES; REPTILIA
AB We determined initial dispersal directions of 1052 native and 278 experienced hatchling Blanding's turtles (Emydoidea blandingii (Holbrook, 1838)) in experimental arenas in a variety of settings. Dispersal of naive hatchlings was nonrandom in 7 of 10 sites. All nonrandom dispersal patterns suggested hatchlings primarily used vision to orient toward dark far horizons, particularly those associated with riparian habitats. We found no evidence that hatchlings use positive geotaxis, olfaction, humidity gradients, or scent trailing of other individuals during dispersal. Despite the lack of relationships between the changing position of the sun and relationships between nest sites and wetlands, patterns of dispersal were different for hatchlings released in the morning and late afternoon at two sites. Comparisons of the dispersal of naive and translocated experienced hatchlings (those with previous exposure to environmental cues) suggest that hatchlings develop a sun compass within 2 days of emergence from nests. Based on all nonrandom dispersals of hatchlings at arenas, the estimated maximum perception distance of hatchlings was 325 in. In some situations, forest succession, agriculture activities, and introduction of pine trees may increase risks faced by hatchlings dispersing from nests by reducing their ability to find wetlands.
C1 [Pappas, M. J.] Michaels Restaurant, Rochester, MN 55904 USA.
[Congdon, J. D.] Savannah River Ecol Lab, Aiken, SC 29802 USA.
[Capps, J. D.] Allterra Environm Inc, Santa Cruz, CA 95060 USA.
RP Congdon, JD (reprint author), Bar Boot Ranch, Box 1128, Douglas, AZ 85608 USA.
EM congdon@vtc.net
NR 40
TC 11
Z9 11
U1 3
U2 18
PU NATL RESEARCH COUNCIL CANADA-N R C RESEARCH PRESS
PI OTTAWA
PA BUILDING M 55, OTTAWA, ON K1A 0R6, CANADA
SN 0008-4301
J9 CAN J ZOOL
JI Can. J. Zool.-Rev. Can. Zool.
PD SEP
PY 2009
VL 87
IS 9
BP 755
EP 766
DI 10.1139/Z09-065
PG 12
WC Zoology
SC Zoology
GA 504LD
UT WOS:000270617400002
ER
PT J
AU Monteiro, PJM
Kirchheim, AP
Chae, S
Fischer, P
MacDowell, AA
Schaible, E
Wenk, HR
AF Monteiro, P. J. M.
Kirchheim, A. P.
Chae, S.
Fischer, P.
MacDowell, A. A.
Schaible, E.
Wenk, H. R.
TI Characterizing the nano and micro structure of concrete to improve its
durability
SO CEMENT & CONCRETE COMPOSITES
LA English
DT Article
CT 2nd Canadian Conference on Effective Design of Structures
CY JUN, 2008
CL McMaster Univ, Hamilton, CANADA
HO McMaster Univ
DE Concrete; Durability; Microscopy; Neutron; Tomography; X-ray
ID X-RAY MICROSCOPY; ANGLE NEUTRON-SCATTERING; ALKALI-SILICA REACTION;
CEMENT PASTE; TRICALCIUM SILICATE; TRANSMISSION MICROSCOPY;
SPATIAL-RESOLUTION; CALCIUM HYDROXIDE; HIGH-PRESSURE; IN-SITU
AB New and advanced methodologies have been developed to characterize the nano and microstructure of cement paste and concrete exposed to aggressive environments. High resolution full-field soft X-ray imaging in the water window is providing new insight on the nano scale of the cement hydration process, which leads to a nano-optimization of cement-based systems. Hard X-ray microtomography images of ice inside cement paste and cracking caused by the alkali-silica reaction (ASR) enables three-dimensional structural identification. The potential of neutron diffraction to determine reactive aggregates by measuring their residual strains and preferred orientation is studied. Results of experiments using these tools are shown on this paper. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Monteiro, P. J. M.; Kirchheim, A. P.; Chae, S.] Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA.
[Fischer, P.] Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Xray Opt, Berkeley, CA 94720 USA.
[MacDowell, A. A.; Schaible, E.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
RP Monteiro, PJM (reprint author), Univ Calif Berkeley, Dept Civil Engn, 721 Davis Hall, Berkeley, CA 94720 USA.
EM monteiro@ce.berkeley.edu
RI Fischer, Peter/A-3020-2010; Kirchheim, Ana /B-4380-2009; MacDowell,
Alastair/K-4211-2012
OI Fischer, Peter/0000-0002-9824-9343; Kirchheim, Ana /0000-0002-8241-0331;
NR 39
TC 38
Z9 39
U1 8
U2 37
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0958-9465
J9 CEMENT CONCRETE COMP
JI Cem. Concr. Compos.
PD SEP
PY 2009
VL 31
IS 8
BP 577
EP 584
DI 10.1016/j.cemconcomp.2008.12.007
PG 8
WC Construction & Building Technology; Materials Science, Composites
SC Construction & Building Technology; Materials Science
GA 489NK
UT WOS:000269426700009
ER
PT J
AU Shuai, JW
Yang, DP
Pearson, JE
Rudiger, S
AF Shuai, J. W.
Yang, D. P.
Pearson, J. E.
Ruediger, S.
TI An investigation of models of the IP3R channel in Xenopus oocyte
SO CHAOS
LA English
DT Article
DE biomembrane transport; calcium
ID INOSITOL TRISPHOSPHATE RECEPTOR; CA2+ RELEASE CHANNELS;
1,4,5-TRISPHOSPHATE RECEPTOR; GATING KINETICS; CALCIUM; SINGLE;
OSCILLATIONS; INSP(3); SIMULATIONS
AB We consider different models of inositol 1,4,5-trisphosphate (IP3) receptor (IP3R) channels in order to fit nuclear membrane patch clamp data of the stationary open probability, mean open time, and mean close time of channels in the Xenopus oocyte. Our results indicate that rather than to treat the tetrameric IP3R as four independent and identical subunits, one should assume sequential binding-unbinding processes of Ca2+ ions and IP3 messengers. Our simulations also favor the assumption that a channel opens through a conformational transition from a close state to an active state.
C1 [Shuai, J. W.; Yang, D. P.] Xiamen Univ, Dept Phys, Xiamen 361005, Peoples R China.
[Shuai, J. W.; Yang, D. P.] Xiamen Univ, Inst Theoret Phys & Astrophys, Xiamen 361005, Peoples R China.
[Pearson, J. E.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Ruediger, S.] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany.
RP Shuai, JW (reprint author), Xiamen Univ, Dept Phys, Xiamen 361005, Peoples R China.
EM jianweishuai@xmu.edu.cn
RI Shuai, Jianwei/G-3371-2010; Yang, Dong Ping/D-4633-2011
FU National Institutes of Health [2R01GM065830-06A1]; National Science
Foundation of China [10775114]
FX This work was supported by National Institutes of Health Grant No.
2R01GM065830-06A1 for J.S. and J.P.J.S. also acknowledges the support
from the National Science Foundation of China under Grant No. 10775114.
NR 26
TC 17
Z9 19
U1 0
U2 3
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1054-1500
J9 CHAOS
JI Chaos
PD SEP
PY 2009
VL 19
IS 3
AR 037105
DI 10.1063/1.3156402
PG 11
WC Mathematics, Applied; Physics, Mathematical
SC Mathematics; Physics
GA 501KV
UT WOS:000270381500051
PM 19792030
ER
PT J
AU Benavides-Garcia, MG
Balasubramanian, K
AF Benavides-Garcia, Maria G.
Balasubramanian, Krishnan
TI Structural Insights into the Binding of Uranyl with Human Serum Protein
Apotransferrin Structure and Spectra of Protein-Uranyl Interactions
SO CHEMICAL RESEARCH IN TOXICOLOGY
LA English
DT Article
ID RELATIVISTIC EFFECTIVE POTENTIALS; SPIN-ORBIT OPERATORS;
BLOOD-BRAIN-BARRIER; CARBONATE COMPLEXES; ACUTE EXPOSURE; TRANSFERRIN;
URANIUM; CHEMISTRY; TOXICITY; RAMAN
AB Ab initio quantum mechanical computational studies for the structure and IR spectra of the uranyl complex with human serum apotransferrin (TF) protein are carried Out to model Uranyl intake into the human cell through endocytosis and formation of a coordination complex with the protein binding sites. The computed IR spectra and structure of the uranyl-protein complex facilitate interpretation of the observed spectra and confirm the primary binding sites of the transferrin protein with the uranyl ion. Our computed equilibrium geometry and the IR spectra of the uranyl-TF complex reveal that uranyl ion is bound to two tyrosines, one aspartate group, and one carbonate ion. Our IR spectra indicate that histidine is not involved in binding to uranyl with transferrin protein. Out, computations reveal a short. strong hydrogen bond, which could play an important role in the stabilization and formation of the uranyl-TF complex. Computed Laplacian charge plots indicate high chemical reactivity oil this complex as both an electrophile and a nucleophile, facilitating binding to different receptors and thus entry into it number of target organs and the blood-brain barrier. The Mulliken charge density plots and the three-dimensional charge density plots suggest a donor-acceptor mechanism in the complex formation.
C1 [Balasubramanian, Krishnan] Calif State Univ Hayward, Coll Sci, Hayward, CA 94542 USA.
[Benavides-Garcia, Maria G.] Univ Houston Downtown, Dept Nat Sci, Houston, TX 77002 USA.
[Balasubramanian, Krishnan] Lawrence Livermore Natl Lab, Mat Sci Directorate, Livermore, CA 94550 USA.
[Balasubramanian, Krishnan] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
RP Balasubramanian, K (reprint author), Calif State Univ Hayward, Coll Sci, Hayward, CA 94542 USA.
NR 46
TC 12
Z9 13
U1 2
U2 24
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0893-228X
EI 1520-5010
J9 CHEM RES TOXICOL
JI Chem. Res. Toxicol.
PD SEP
PY 2009
VL 22
IS 9
BP 1613
EP 1621
DI 10.1021/tx900184r
PG 9
WC Chemistry, Medicinal; Chemistry, Multidisciplinary; Toxicology
SC Pharmacology & Pharmacy; Chemistry; Toxicology
GA 495LJ
UT WOS:000269892600017
PM 19678663
ER
PT J
AU Tao, F
Bernasek, SL
Xu, GQ
AF Tao, Feng
Bernasek, Steven L.
Xu, Guo-Qin
TI Electronic and Structural Factors in Modification and Functionalization
of Clean and Passivated Semiconductor Surfaces with Aromatic Systems
SO CHEMICAL REVIEWS
LA English
DT Review
ID SCANNING-TUNNELING-MICROSCOPY; HYDROGEN-TERMINATED SILICON; SI(100)-2
X-1 SURFACE; SELF-ASSEMBLED MONOLAYERS; ENERGY-LOSS SPECTROSCOPY; WALLED
CARBON NANOTUBES; MOLECULAR-ORBITAL CALCULATION; INDIVIDUAL C-60
MOLECULES; BINDING STATE CONVERSION; CORE-LEVEL PHOTOEMISSION
C1 [Tao, Feng; Bernasek, Steven L.] Princeton Univ, Dept Chem, Princeton, NJ 08544 USA.
[Tao, Feng] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Tao, Feng] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Tao, Feng] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem, Berkeley, CA 94720 USA.
[Xu, Guo-Qin] Natl Univ Singapore, Dept Chem, Singapore 119260, Singapore.
RP Bernasek, SL (reprint author), Princeton Univ, Dept Chem, Princeton, NJ 08544 USA.
RI Xu, Guo Qin/C-2077-2013
NR 294
TC 59
Z9 59
U1 1
U2 39
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0009-2665
J9 CHEM REV
JI Chem. Rev.
PD SEP
PY 2009
VL 109
IS 9
BP 3991
EP 4024
DI 10.1021/cr8003532
PG 34
WC Chemistry, Multidisciplinary
SC Chemistry
GA 493XU
UT WOS:000269773600003
PM 19637925
ER
PT J
AU Gu, L
Zhu, SJ
Hamilton, JH
Ramayya, AV
Hwang, JK
Liu, SH
Wang, JG
Luo, YX
Rasmussen, JO
Lee, IY
Ding, HB
Li, K
Xu, Q
Yang, YY
AF Gu Long
Zhu Sheng-Jiang
Hamilton, J. H.
Ramayya, A. V.
Hwang, J. K.
Liu, S. H.
Wang Jian-Guo
Luo, Y. X.
Rasmussen, J. O.
Lee, I. Y.
Ding Huai-Bo
Li, K.
Xu Qiang
Yang Yun-Yi
TI Reinvestigation of Collective Bands in Tc-107
SO CHINESE PHYSICS LETTERS
LA English
DT Article
ID GAMMA-VIBRATIONAL BANDS; NEUTRON-RICH MO-106; ROTATIONAL BANDS; NUCLEUS;
IDENTIFICATION; FISSION; DEFORMATION; ISOTOPES; REGION; STATES
AB The high spin states of a neutron-rich Tc-107 nucleus are reinvestigated by observing prompt gamma-rays from the spontaneous fission of Cf-252. The previous level scheme is updated. A collective band based on the pi 5/2 [303] orbital is confirmed and extended. Inconsistencies in the configuration assignments for a type of positive parity bands of odd-A Tc-105,Tc-107,Tc-109 in the previous reports are clarified according to the g factor calculations. A new band based on the 1499.5 keV level in Tc-107 is proposed as a two-phonon gamma-vibrational band.
C1 [Gu Long; Zhu Sheng-Jiang; Wang Jian-Guo; Ding Huai-Bo; Xu Qiang; Yang Yun-Yi] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China.
[Hamilton, J. H.; Ramayya, A. V.; Hwang, J. K.; Liu, S. H.; Luo, Y. X.; Li, K.] Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA.
[Luo, Y. X.; Rasmussen, J. O.; Lee, I. Y.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Gu, L (reprint author), Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China.
EM zhushj@mail.tsinghua.edu.cn
FU National Natural Science Foundation of China [10775078]; National Basic
Research Program [2007CB815005]; Special Program of Higher Education
Science Foundation [20070003149]; Vanderbilt University and Lawrence
Berkeley National Laboratory [DE-FG05-88ER40407, DE-AC03-76SF00098]
FX Supported by National Natural Science Foundation of China under Grants
No 10775078, the National Basic Research Program under Grand No
2007CB815005, the Special Program of Higher Education Science Foundation
under Grant No 20070003149. The work at Vanderbilt University and
Lawrence Berkeley National Laboratory was supported by U. S. Department
of Energy under Grant Nos DE-FG05-88ER40407 and DE-AC03-76SF00098.
NR 29
TC 10
Z9 12
U1 1
U2 3
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0256-307X
EI 1741-3540
J9 CHINESE PHYS LETT
JI Chin. Phys. Lett.
PD SEP
PY 2009
VL 26
IS 9
AR 092502
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 491DZ
UT WOS:000269559000026
ER
PT J
AU Petersson, NA
Sjogreen, B
AF Petersson, N. Anders
Sjogreen, Bjorn
TI An Energy Absorbing Far-Field Boundary Condition for the Elastic Wave
Equation
SO COMMUNICATIONS IN COMPUTATIONAL PHYSICS
LA English
DT Article
DE Elastic wave equation; far-field boundary condition; finite differences;
stability; energy estimate
ID PERFECTLY MATCHED LAYERS; 2ND-ORDER FORMULATION
AB We present an energy absorbing non-reflecting boundary condition of Clayton-Engquist type for the elastic wave equation together with a discretization which is stable for any ratio of compressional to shear wave speed. We prove stability for a second-order accurate finite-difference discretization of the elastic wave equation in three space dimensions together with a discretization of the proposed non-reflecting boundary condition. The stability proof is based on a discrete energy estimate and is valid for heterogeneous materials. The proof includes all six boundaries of the computational domain where special discretizations are needed at the edges and corners. The stability proof holds also when a free surface boundary condition is imposed on some sides of the computational domain.
C1 [Petersson, N. Anders; Sjogreen, Bjorn] Lawrence Livermore Natl Lab, Ctr Appl & Sci Comp L 550, Livermore, CA 94551 USA.
RP Petersson, NA (reprint author), Lawrence Livermore Natl Lab, Ctr Appl & Sci Comp L 550, Livermore, CA 94551 USA.
EM andersp@llnl.gov; sjogreen2@llnl.gov
FU U.S. Department of Energy [DE-AC52-07NA27344]
FX This work was performed under the auspices of the U.S. Department of
Energy by Lawrence Livermore National Laboratory under contract
DE-AC52-07NA27344.
NR 17
TC 13
Z9 13
U1 0
U2 4
PU GLOBAL SCIENCE PRESS
PI WANCHAI
PA ROOM 2303, OFFICER TOWER, CONVENTION PLAZA, 1 HARBOUR ROAD, WANCHAI,
HONG KONG 00000, PEOPLES R CHINA
SN 1815-2406
J9 COMMUN COMPUT PHYS
JI Commun. Comput. Phys.
PD SEP
PY 2009
VL 6
IS 3
BP 483
EP 508
PG 26
WC Physics, Mathematical
SC Physics
GA 459OA
UT WOS:000267111400002
ER
PT J
AU Yelick, K
AF Yelick, Katherine
TI Abstraction for Parallelism
SO COMMUNICATIONS OF THE ACM
LA English
DT Editorial Material
C1 Univ Calif Berkeley, Natl Energy Res Sci Comp Ctr, Lawrence Berkeley Lab, Natl Supercomp Facil,Dept Energy, Berkeley, CA 94720 USA.
RP Yelick, K (reprint author), Univ Calif Berkeley, Natl Energy Res Sci Comp Ctr, Lawrence Berkeley Lab, Natl Supercomp Facil,Dept Energy, Berkeley, CA 94720 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU ASSOC COMPUTING MACHINERY
PI NEW YORK
PA 2 PENN PLAZA, STE 701, NEW YORK, NY 10121-0701 USA
SN 0001-0782
J9 COMMUN ACM
JI Commun. ACM
PD SEP
PY 2009
VL 52
IS 9
BP 88
EP 88
DI 10.1145/1562164.1562187
PG 1
WC Computer Science, Hardware & Architecture; Computer Science, Software
Engineering; Computer Science, Theory & Methods
SC Computer Science
GA 489KK
UT WOS:000269418800024
ER
PT J
AU Pilli, SP
Simmons, KL
Holbery, JD
Shutthanandan, V
Stickler, PB
Smith, LV
AF Pilli, Siva P.
Simmons, Kevin L.
Holbery, James D.
Shutthanandan, Vaithiyalingam
Stickler, Patrick B.
Smith, Lloyd V.
TI A novel accelerated moisture absorption test and characterization
SO COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
LA English
DT Article
DE Polymer-matrix composites (PMCs); Diffusion
ID EPOXY COMPOSITES
AB Moisture plays a significant role in influencing the mechanical behavior and long-term durability of composites. With the current available testing techniques the time required for environmental qualification of polymer composites can be on the order of several years and any interruption in the test can result in a significant cost and schedule penalty. Because of these long environmental conditioning times there is a strong desire to accelerate the process to advance environmental qualification of materials for use in commercial and military aerospace structures. An accelerated humidity test technique has been developed where moisture ingression was obtained by increasing the pressure in the test chamber. A hygrothermal humidity chamber was used in combination with D(2)O water to subsequently characterize the diffusion of D(2)O in a carbon/epoxy composite using Nuclear Reaction Analysis (NRA). Moisture content was also measured as a function of through-thickness depth using NRA. The accelerated technique decreased the time to saturation by 80% as compared to conventional diffusion without pressure. Moisture uptake from both conventional and accelerated diffusion exposures followed typical Fickian diffusion response. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Pilli, Siva P.; Smith, Lloyd V.] Washington State Univ, Pullman, WA 99164 USA.
[Stickler, Patrick B.] Boeing Co, Seattle, WA 98124 USA.
[Pilli, Siva P.; Simmons, Kevin L.; Holbery, James D.; Shutthanandan, Vaithiyalingam] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Pilli, SP (reprint author), Washington State Univ, Pullman, WA 99164 USA.
EM siva.pilli@pnl.gov
NR 24
TC 8
Z9 8
U1 2
U2 4
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1359-835X
J9 COMPOS PART A-APPL S
JI Compos. Pt. A-Appl. Sci. Manuf.
PD SEP
PY 2009
VL 40
IS 9
BP 1501
EP 1505
DI 10.1016/j.compositesa.2009.06.008
PG 5
WC Engineering, Manufacturing; Materials Science, Composites
SC Engineering; Materials Science
GA 498RW
UT WOS:000270161800018
ER
PT J
AU Samper, J
Xu, TF
Yang, CB
AF Samper, Javier
Xu, Tianfu
Yang, Changbing
TI A sequential partly iterative approach for multicomponent reactive
transport with CORE2D
SO COMPUTATIONAL GEOSCIENCES
LA English
DT Article
DE Numerical model; Reactive transport; Sequential iteration; CORE
ID SATURATED POROUS-MEDIA; MODEL DEVELOPMENT; CATION-EXCHANGE;
NUMERICAL-MODEL; MASS-TRANSPORT; FLOW SYSTEMS; GROUNDWATER; SUBSURFACE;
SIMULATION; CHEMISTRY
AB CORE2D V4 is a finite element code for modeling partly or fully saturated water flow, heat transport, and multicomponent reactive solute transport under both local chemical equilibrium and kinetic conditions. It can handle coupled microbial processes and geochemical reactions such as acid-base, aqueous complexation, redox, mineral dissolution/precipitation, gas dissolution/exsolution, ion exchange, sorption via linear and nonlinear isotherms, and sorption via surface complexation. Hydraulic parameters may change due to mineral precipitation/dissolution reactions. Coupled transport and chemical equations are solved by using sequential iterative approaches. A sequential partly iterative approach (SPIA) is presented which improves the accuracy of the traditional sequential non-iterative approach (SNIA) and is more efficient than the general sequential iterative approach (SIA). While SNIA leads to a substantial saving of computing time, it introduces numerical errors which are especially large for cation exchange reactions. SPIA improves the efficiency of SIA because the iteration between transport and chemical equations is only performed in nodes with a large mass transfer between solid and liquid phases. The efficiency and accuracy of SPIA are compared to those of SIA and SNIA using synthetic examples and a case study of reactive transport through the Llobregat Delta aquitard in Spain. SPIA is found to be as accurate as SIA while requiring significantly less CPU time. In addition, SPIA is much more accurate than SNIA with only a minor increase in computing time. A further enhancement of the efficiency of SPIA is achieved by improving the efficiency of the Newton-Raphson method used for solving chemical equations. Such an improvement is obtained by working with increments of log concentrations and ignoring the terms of the Jacobian matrix containing derivatives of activity coefficients. A proof is given for the symmetry and non-singularity of the Jacobian matrix. Numerical analyses performed with synthetic examples confirm that these modifications improve the efficiency and convergence of the iterative algorithm.
C1 [Samper, Javier; Yang, Changbing] Univ A Coruna, La Coruna 15071, Spain.
[Xu, Tianfu] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Samper, J (reprint author), Univ A Coruna, La Coruna 15071, Spain.
EM jsamper@udc.es; Tianfu_Xu@lbl.gov; yangcb@gmail.com
RI yang, changbing/A-3097-2009; Samper, Javier /F-7311-2016
OI yang, changbing/0000-0002-2442-2270; Samper, Javier /0000-0002-9532-8433
FU ENRESA; European Commission [FP6-516514]; NF-PPRO [FI6W-CT-2003-02389];
FEBEX [FI4W-CT95-0006, FIKW-CT-2000-0016]; BENIPA [FIKW-CT-2000-00015];
CERBERUS [F14W-CT95-0008]; CICYT [HID98-0282, REN2003-8882]; Galician
Research Program [PGIDT04PXIC11801PM, PGIDT00PX 111802]; University of
La Coru; US Dept. of Energy [DE-AC02-05CH11231]
FX CORE development and its applications have been funded by ENRESA,
European Commission through FUNMIG (FP6-516514), NF-PPRO
(FI6W-CT-2003-02389), FEBEX (FI4W-CT95-0006 & FIKW-CT-2000-0016), BENIPA
(FIKW-CT-2000-00015), and CERBERUS (F14W-CT95-0008) projects of the
Nuclear Fission Safety Programme, CICYT (HID98-0282 and REN2003-8882),
Galician Research Program (PGIDT04PXIC11801PM and PGIDT00PX 111802), and
University of La Coru a through a research scholarship awarded to the
third author. Contributions of all professors and students to the
development of CORE during the last 15 years as well as inputs of CORE
users are greatly acknowledged. The second author was supported by the
US Dept. of Energy under Contract No. DE-AC02-05CH11231. We thank also
the two anonymous reviewers for their comments and recommendations which
have improved the paper.
NR 68
TC 21
Z9 21
U1 2
U2 15
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 1420-0597
J9 COMPUTAT GEOSCI
JI Comput. Geosci.
PD SEP
PY 2009
VL 13
IS 3
BP 301
EP 316
DI 10.1007/s10596-008-9119-5
PG 16
WC Computer Science, Interdisciplinary Applications; Geosciences,
Multidisciplinary
SC Computer Science; Geology
GA 480XT
UT WOS:000268771300004
ER
PT J
AU Bishop, JE
AF Bishop, Joseph E.
TI Simulating the pervasive fracture of materials and structures using
randomly close packed Voronoi tessellations
SO COMPUTATIONAL MECHANICS
LA English
DT Article
DE Voronoi; Finite element; Fracture; Fragmentation; Cohesive crack;
Sensitivity to initial conditions; Probabilistic
ID FINITE-ELEMENT-METHOD; BRITTLE MATERIALS; CRACK-PROPAGATION; SOLID
MECHANICS; MESHFREE METHOD; MODEL; FRAGMENTATION; MICROSTRUCTURES;
GEOMETRY; GROWTH
AB Under extreme loading conditions most often the extent of material and structural fracture is pervasive in the sense that a multitude of cracks are nucleating, propagating in arbitrary directions, coalescing, and branching. Pervasive fracture is a highly nonlinear process involving complex material constitutive behavior, material softening, localization, surface generation, and ubiquitous contact. A pure Lagrangian computational method based on randomly close packed Voronoi tessellations is proposed as a rational and robust approach for simulating the pervasive fracture of materials and structures. Each Voronoi cell is formulated as a finite element using the Reproducing Kernel Method. Fracture surfaces are allowed to nucleate only at the intercell faces, and cohesive tractions are dynamically inserted. The randomly seeded Voronoi cells provide a regularized random network for representing fracture surfaces. Example problems are used to demonstrate the proposed numerical method. The primary numerical challenge for this class of problems is the demonstration of model objectivity and, in particular, the identification and demonstration of a measure of convergence for engineering quantities of interest.
C1 Sandia Natl Labs, Engn Sci Ctr, Albuquerque, NM 87185 USA.
RP Bishop, JE (reprint author), Sandia Natl Labs, Engn Sci Ctr, POB 5800, Albuquerque, NM 87185 USA.
EM jebisho@sandia.gov
FU University of Califorina at Davis
FX The many discussions concerning polyhedral element formulations with
Professor Mark Rashid at the University of Califorina at Davis are
gratefully acknowledged. Also, the comments and suggestions from the
anonymous reviewers were particularly constructive in improving the
quality of the paper.
NR 61
TC 27
Z9 27
U1 1
U2 5
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0178-7675
EI 1432-0924
J9 COMPUT MECH
JI Comput. Mech.
PD SEP
PY 2009
VL 44
IS 4
BP 455
EP 471
DI 10.1007/s00466-009-0383-6
PG 17
WC Mathematics, Interdisciplinary Applications; Mechanics
SC Mathematics; Mechanics
GA 462ON
UT WOS:000267365600002
ER
PT J
AU Dudson, BD
Umansky, MV
Xu, XQ
Snyder, PB
Wilson, HR
AF Dudson, B. D.
Umansky, M. V.
Xu, X. Q.
Snyder, P. B.
Wilson, H. R.
TI BOUT++: A framework for parallel plasma fluid simulations
SO COMPUTER PHYSICS COMMUNICATIONS
LA English
DT Article
DE Plasma simulation; Curvilinear coordinates; Tokamak; ELM
ID EDGE LOCALIZED INSTABILITIES; HAMILTON-JACOBI EQUATIONS; WEIGHTED ENO
SCHEMES; MAGNETOHYDRODYNAMIC FLOWS; TURBULENCE SIMULATIONS; NUMERICAL
SIMULATIONS; VERIFICATION; STABILITY; TOKAMAKS; GEOMETRY
AB A new modular code called BOUT++ is presented, which simulates 3D fluid equations in curvilinear coordinates. Although aimed at simulating Edge Localised Modes (ELMS) in tokamak x-point geometry, the code is able to simulate a wide range Of fluid models (magnetised and unmagnetised) involving an arbitrary number of scalar and vector fields, in a wide range of geometries. Time evolution is fully implicit, and 3rd-order WENO schemes are implemented. Benchmarks are presented for linear and nonlinear problems (the Orszag-Tang vortex) showing good agreement. Performance of the code is tested by scaling with problem size and processor number, showing efficient scaling to thousands of processors. Linear initial-value simulations of ELMS using reduced ideal MHD are presented, and the results compared to the ELITE linear MHD eigenvalue code. The resulting mode-structures and growth-rate are found to be in good agreement (gamma(BOUT++) = 0.245 omega(A), gamma(ELITE) = 0.239 omega(A), with Alfvenic timescale 1/omega(A) = R/V(A)). To our knowledge, this is the first time dissipationless, initial-value Simulations of ELMS have been successfully demonstrated. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Dudson, B. D.; Wilson, H. R.] Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England.
[Umansky, M. V.; Xu, X. Q.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Snyder, P. B.] Gen Atom Co, San Diego, CA 92186 USA.
RP Dudson, BD (reprint author), Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England.
EM bd512@york.ac.uk
OI Dudson, Benjamin/0000-0002-0094-4867
NR 54
TC 109
Z9 109
U1 7
U2 43
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0010-4655
J9 COMPUT PHYS COMMUN
JI Comput. Phys. Commun.
PD SEP
PY 2009
VL 180
IS 9
BP 1467
EP 1480
DI 10.1016/j.cpc.2009.03.008
PG 14
WC Computer Science, Interdisciplinary Applications; Physics, Mathematical
SC Computer Science; Physics
GA 500RA
UT WOS:000270320400006
ER
PT J
AU Cooper, WA
Hirshman, SP
Merkel, P
Graves, JP
Kisslinger, J
Wobig, HFG
Narushima, Y
Okamura, S
Watanabe, KY
AF Cooper, W. A.
Hirshman, S. P.
Merkel, P.
Graves, J. P.
Kisslinger, J.
Wobig, H. F. G.
Narushima, Y.
Okamura, S.
Watanabe, K. Y.
TI Three-dimensional anisotropic pressure free boundary equilibria
SO COMPUTER PHYSICS COMMUNICATIONS
LA English
DT Article
DE Free boundary equilibrium; Bi-Maxwellian; Pressure anisotropy; Green's
function; Quasiaxisymmetry
ID MAGNETOHYDRODYNAMIC EQUILIBRIA; STABILITY; STELLARATOR; INSTABILITY;
ALGORITHM; SYSTEMS; MODEL; LHD
AB Free boundary three-dimensional anisotropic pressure magnetohydrodynamic equilibria with nested magnetic flux surfaces are computed through the minimisation of the plasma energy functional W = integral(V) d(3)x[B-2/(2 mu(0)) + p(parallel to)/(Gamma - 1)]. The plasma-vacuum interface is varied to guarantee the continuity of the total pressure [p(perpendicular to) + B-2/(2 mu(0))] across it and the vacuum magnetic field must satisfy the Neumann bo undary condition that its component normal to this interfaced surface vanishes. The vacuum magnetic field corresponds to that driven by the plasma current and external coils plus the gradient of a potential function whose solution is obtained using a Green's function method. The energetic particle contributions to the pressure are evaluated analytically from the moments of the variant of a bi-Maxwellian distribution function that satisfies the constraint B . del F-h = 0. Applications to demonstrate the versatility and reliability of the numerical method employed have concentrated on high-beta off-axis energetic particle deposition with large parallel and perpendicular pressure anisotropies in a 2-field period quasiaxisymmetric stellarator reactor system. For large perpendicular pressure anisotropy, the hot particle component of the p(perpendicular to) distribution localises in the regions where the energetic particles are deposited. For large parallel pressure anisotropy. the pressures are more uniform around the flux surfaces. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Cooper, W. A.; Graves, J. P.] Ecole Polytech Fed Lausanne, Ctr Rech Phys Plasmas, Assoc Euratom Suisse, CH-1015 Lausanne, Switzerland.
[Hirshman, S. P.] Oak Ridge Natl Lab, Div Fus Energy, Oak Ridge, TN 37831 USA.
[Merkel, P.; Kisslinger, J.; Wobig, H. F. G.] EURATOM, Max Planck Inst Plasmaphys, D-85748 Garching, Germany.
[Narushima, Y.; Okamura, S.; Watanabe, K. Y.] Natl Inst Nat Sci, Toki, Gifu 5095292, Japan.
RP Cooper, WA (reprint author), Ecole Polytech Fed Lausanne, Ctr Rech Phys Plasmas, Assoc Euratom Suisse, CH-1015 Lausanne, Switzerland.
EM wilfred.cooper@epfl.ch
FU Fonds National Suisse de la Recherche Scientifique and Euratom
FX This research was partially sponsored by the Fonds National Suisse de la
Recherche Scientifique and Euratom. One of the authors (W.A.C.) would
like to thank the hospitality of the Oak Ridge National Laboratory where
a significant part of the development of the ANIMEC code was completed.
NR 25
TC 35
Z9 35
U1 0
U2 5
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0010-4655
EI 1879-2944
J9 COMPUT PHYS COMMUN
JI Comput. Phys. Commun.
PD SEP
PY 2009
VL 180
IS 9
BP 1524
EP 1533
DI 10.1016/j.cpc.2009.04.006
PG 10
WC Computer Science, Interdisciplinary Applications; Physics, Mathematical
SC Computer Science; Physics
GA 500RA
UT WOS:000270320400013
ER
PT J
AU Alvarez, G
AF Alvarez, G.
TI The density matrix renormalization group for strongly correlated
electron systems: A generic implementation
SO COMPUTER PHYSICS COMMUNICATIONS
LA English
DT Article
DE Density-matrix renormalization group; DMRG; Strongly correlated
electrons; Generic programming
ID NARROW ENERGY BANDS; MODEL
AB The purpose of this paper is (i) to present a generic and fully functional implementation of the density-matrix renormalization group (DMRG) algorithm, and (ii) to describe how to write additional strongly-correlated electron models and geometries by using templated classes. Besides considering general models and geometries, the code implements Hamiltonian symmetries in a generic way and parallelization over symmetry-related matrix blocks.
Program summary
Program title: DMRG++
Catalogue identifier: AEDJ_v1_0
Program summary URL: http://cpc.cs.qub.ac.uk/summaries/AEDJ_vl_0.html
Program obtainable from: CPC Program Library, Queen's University, Belfast, N. Ireland
Licensing provisions: See file LICENSE
No. of lines in distributed program, including test data, etc: 15795
No. of bytes in distributed program, including test data, etc.: 83454
Distribution format: tar.gz
Programming language: C++, MPI
Computer: PC, HP cluster
Operating system: Any, tested on Linux
Has the code been vectorized or parallelized?: Yes
RAM: I GB (256 MB is enough to run included rest)
Classification: 23
External routines: BLAS and LAPACK
Nature of problem: Strongly correlated electrons systems, display a broad range of important phenomena, and their study is a major area of research in condensed matter physics. In this context, model Hamiltonians are used to simulate the relevant interactions of a given compound, and the relevant degrees of freedom. These studies rely on the use of tight-binding lattice models that consider electron localization, where states on one site can be labeled by spin and orbital degrees of freedom. The calculation of properties from these Hamiltonians is a computational intensive problem, since the Hilbert space over which these Hamiltonians act grows exponentially with the number of sites on the lattice.
Solution method: The DMRG is a numerical variational technique to study quantum many body Hamiltonians. For one-dimensional and quasi one-dimensional systems, the DMRG is able to truncate, with bounded errors and in a general and efficient way, the underlying Hilbert space to a constant size, making the problem tractable.
Running time: The test program runs in 15 seconds. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Alvarez, G.] Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA.
[Alvarez, G.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
RP Alvarez, G (reprint author), Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA.
EM gz1@ornl.gov
FU Center for Nanophase Materials Sciences; U.S. Department of Energy
FX The present code uses part of the psimag toolkit, http://psimag.org/.
Thomas Schulthess and Michael Summers's work on psimag has inspired some
of the C++ templated classes used in DMRG++. I would like to thank Jose
Riera and Ivan Gonzalez for helping me with the validation of results
and extensive tests for the DMRG code on chains and ladders. I
acknowledge the support of the Center for Nanophase Materials Sciences,
sponsored by the Scientific User Facilities Division, Basic Energy
Sciences, U.S. Department of Energy, under contract with UT-Battelle.
NR 18
TC 9
Z9 9
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0010-4655
J9 COMPUT PHYS COMMUN
JI Comput. Phys. Commun.
PD SEP
PY 2009
VL 180
IS 9
BP 1572
EP 1578
DI 10.1016/j.cpc.2009.02.016
PG 7
WC Computer Science, Interdisciplinary Applications; Physics, Mathematical
SC Computer Science; Physics
GA 500RA
UT WOS:000270320400020
ER
PT J
AU Jain, PK
Tentner, A
Rizwan-uddin
AF Jain, Prashant K.
Tentner, Adrian
Rizwan-uddin
TI A lattice Boltzmann framework to simulate boiling water reactor core
hydrodynamics
SO COMPUTERS & MATHEMATICS WITH APPLICATIONS
LA English
DT Article; Proceedings Paper
CT 4th International Conference for Mesoscopic Methods in Engineering and
Science
CY JUL 16-20, 2007
CL Munich, GERMANY
DE Multiphase; Peng-Robinson equation of state; Surface tension
ID LEVEL SET; FLOWS; MODEL
AB This paper presents a consistent LBM formulation for the simulation of a two-phase water-steam system. Results of initial model validation in a range of thermodynamic conditions typical for Boiling Water Reactors (BWRs) are also shown. The interface between the two coexisting phases is captured from the dynamics of the model itself, i.e., no interface tracking is needed. The model is based on the Peng-Robinson (P-R) non-ideal equation of state and can quantitatively approximate the phase-coexistence curve for water at different temperatures ranging from 125 to 325 degrees C. Consequently, coexisting phases with large density ratios (up to similar to 1000) may be simulated. Two-phase models in the 200-300 degrees C temperature range are of significant importance to nuclear engineers since most BWRs operate under similar thermodynamic conditions. Simulation of bubbles and droplets in a gravity-free environment of the corresponding coexisting phase until steady state is reached satisfies Laplace law at different temperatures and thus, yield the surface tension of the fluid. Comparing the LBM surface tension thus calculated using the LBM to the corresponding experimental values for water, the LBM lattice unit (lu) can be scaled to the physical units. Using this approach, spatial scaling of the LBM emerges from the model itself and is not imposed externally. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Jain, Prashant K.; Rizwan-uddin] Univ Illinois, Dept Nucl Plasma & Radiol Engn, Urbana, IL 61801 USA.
[Tentner, Adrian] Argonne Natl Lab, Darien, IL 60439 USA.
RP Jain, PK (reprint author), Univ Illinois, Dept Nucl Plasma & Radiol Engn, 216 Talbot Lab,104 S Wright St, Urbana, IL 61801 USA.
EM pkjain2@uiuc.edu; tentner@anl.gov; rizwan@uiuc.edu
NR 22
TC 3
Z9 3
U1 0
U2 10
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0898-1221
EI 1873-7668
J9 COMPUT MATH APPL
JI Comput. Math. Appl.
PD SEP
PY 2009
VL 58
IS 5
BP 975
EP 986
DI 10.1016/j.camwa.2009.02.004
PG 12
WC Mathematics, Applied
SC Mathematics
GA 488ED
UT WOS:000269331000016
ER
PT J
AU Moges, MA
Yu, D
Robertazzi, TG
AF Moges, M. A.
Yu, D.
Robertazzi, T. G.
TI Grid scheduling divisible loads from two sources
SO COMPUTERS & MATHEMATICS WITH APPLICATIONS
LA English
DT Article
DE Divisible loads; Grid scheduling; Multiple sources; Optimal scheduling;
Tree networks
ID SENSOR-DRIVEN PROCESSORS; DISTRIBUTED COMPUTATION; COMMUNICATION DELAYS;
NETWORK; PERFORMANCE; TIME; JOBS
AB To date closed form solutions for optimal finish time and job allocation are largely obtained only for network topologies with a single load originating (root) processor. However in large-scale data intensive problems with geographically distributed resources, load is generated from multiple sources. This paper introduces a new divisible load scheduling strategy for single level tree networks with two load originating processors. Solutions for an optimal allocation of fractions of load to nodes in single level tree networks are obtained via linear programming. A unique scheduling strategy that allows one to obtain closed form solutions for the optimal finish time and load allocation for each processor in the network is also presented. The tradeoff between linear programming and closed form solutions in terms of underlying assumptions is examined. Finally, a performance evaluation of a two source homogeneous single level tree network with concurrent communication strategy is presented. Published by Elsevier Ltd
C1 [Moges, M. A.] Univ Houston, Dept Engn Technol, Houston, TX 77204 USA.
[Yu, D.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
[Robertazzi, T. G.] SUNY Stony Brook, Dept Elect & Comp Engn, Stony Brook, NY 11794 USA.
RP Moges, MA (reprint author), Univ Houston, Dept Engn Technol, Houston, TX 77204 USA.
EM mmoges@uh.edu; dtyu@bnl.gov; tom@ece.sunysb.edu
NR 36
TC 6
Z9 7
U1 0
U2 4
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0898-1221
EI 1873-7668
J9 COMPUT MATH APPL
JI Comput. Math. Appl.
PD SEP
PY 2009
VL 58
IS 6
BP 1081
EP 1092
DI 10.1016/j.camwa.2009.07.046
PG 12
WC Mathematics, Applied
SC Mathematics
GA 498DF
UT WOS:000270116200001
ER
PT J
AU Tuncer, E
Polizos, G
Sauers, I
James, DR
Ellis, AR
Messman, JM
Aytug, T
AF Tuncer, Enis
Polizos, Georgios
Sauers, Isidor
James, D. Randy
Ellis, Alvin R.
Messman, Jamie M.
Aytug, Tolga
TI Polyamide 66 as a cryogenic dielectric
SO CRYOGENICS
LA English
DT Article
DE Polyamide; Cryogenic dielectric; Dielectric breakdown; Complex
dielectric permittivity
ID RELAXATION-TIMES; HIGH-VOLTAGE; NYLON-66; BREAKDOWN; NANOCOMPOSITES;
TEMPERATURES; STATISTICS; DYNAMICS; FIBERS; CABLES
AB Improvements in superconductor and cryogenic technologies enable novel power apparatus, e.g., cables, transformers, fault current limiters, generators, it etc., with better device characteristics than their conventional counterparts. In these applications electrical insulation materials play an important role in system weight, footprint (size), and voltage level. The trend in the electrical insulation material selection has been to adapt or to employ conventional insulation materials to these new systems. However, at low temperatures, thermal contraction and loss of mechanical strength in many materials make them unsuitable for superconducting power applications. In this paper, a widely used commercial material was characterized as a potential cryogenic dielectric. The material is used in "oven bags" which is a heat-resistant polyamide (nylon) used in cooking (produced by Reynolds (R), Richmond, VA, USA). it is first characterized by Fourier transform infrared and X-ray diffraction techniques and determined to be composed of polyamide 66 (PA66) polymer. Secondly the complex dielectric permittivity and dielectric breakdown strength of the PA66 films are investigated. The dielectric data are then compared with data reported in the literature. A comparison of dielectric strength with a widely used high-temperature superconductor electrical insulation material, polypropylene-laminated paper (PPLP (TM) a product of Sumitomo Electric Industries, Japan), is provided. it is observed that the statistical analysis of the PA66 films yields 1% failure probability at 127 W mm(-1); this value is approximately 46 W mm(-1) higher than PPLP (TM). Comparison of the mechanical properties of PA and PPLP (TM) indicates that PA66 has low storage and loss moduli than PPLP (TM). It is concluded that PA66 may be a good candidate for cryogenic applications. Finally, a summary of dielectric properties of some of the commercial tape insulation materials and various polymers is also provided. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Tuncer, Enis; Polizos, Georgios; Sauers, Isidor; James, D. Randy; Ellis, Alvin R.] Oak Ridge Natl Lab, Appl Superronduct Grp, Div Fus Energy, Oak Ridge, TN 37831 USA.
[Messman, Jamie M.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
[Aytug, Tolga] Oak Ridge Natl Lab, Mat Chem Grp, Div Chem Sci, Oak Ridge, TN 37831 USA.
RP Tuncer, E (reprint author), Oak Ridge Natl Lab, Appl Superronduct Grp, Div Fus Energy, Oak Ridge, TN 37831 USA.
EM tuncere@ornl.gov
OI Tuncer, Enis/0000-0002-9324-4324
FU US Department of Energy [DE-AC05-00OR22725]
FX Research sponsored by the US Department of Energy - Office of
Electricity Delivery and Energy Reliability, Superconductivity Program
for Electric Power Systems under Contract DE-AC05-00OR22725 with Oak
Ridge National Laboratory, managed and operated by UT-Battelle. LLC.
NR 40
TC 2
Z9 2
U1 2
U2 19
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0011-2275
J9 CRYOGENICS
JI Cryogenics
PD SEP
PY 2009
VL 49
IS 9
BP 463
EP 468
DI 10.1016/j.cryogenics.2009.06.008
PG 6
WC Thermodynamics; Physics, Applied
SC Thermodynamics; Physics
GA 514CG
UT WOS:000271370700002
ER
PT J
AU Asherie, N
Jakoncic, J
Ginsberg, C
Greenbaum, A
Stojanoff, V
Hrnjez, BJ
Blass, S
Berger, J
AF Asherie, Neer
Jakoncic, Jean
Ginsberg, Charles
Greenbaum, Arieh
Stojanoff, Vivian
Hrnjez, Bruce J.
Blass, Samuel
Berger, Jacob
TI Tartrate Chirality Determines Thaumatin Crystal Habit
SO CRYSTAL GROWTH & DESIGN
LA English
DT Article
ID SWEET-TASTING PROTEIN; MESO-TARTARIC ACID; CONFORMATIONAL ASPECTS;
DANIELLII BENTH; CRYSTALLIZATION; SOLUBILITY; LYSOZYME; SALT;
RESOLUTION; GROWTH
AB A major challenge in structural biology is to produce high-quality protein crystals for X-ray diffraction. Currently, proteins are crystallized by trial and error, often in multicomponent solutions with chiral precipitants. As proteins are chiral molecules, we hypothesized that the chirality of the precipitants may affect crystallogenesis. To test this hypothesis, we crystallized thaumatin, an intensely Sweet globular protein, with the three stereoisomers (L-, D-, and meso-) of tartaric acid. We rind three different crystal habits and crystal packings; the three stereoisomers interact with the protein at different sites. All three precipitants produce high-quality crystals from which atomic resolution (similar to 1 angstrom) structures were obtained. Our findings Suggest that stereospecific interactions with precipitants are important in protein crystal formation and should be controlled when crystallizing proteins for structure determination.
C1 [Asherie, Neer; Ginsberg, Charles; Greenbaum, Arieh; Blass, Samuel; Berger, Jacob] Yeshiva Univ, Dept Phys, New York, NY 10033 USA.
[Asherie, Neer; Ginsberg, Charles; Greenbaum, Arieh; Blass, Samuel; Berger, Jacob] Yeshiva Univ, Dept Biol, New York, NY 10033 USA.
[Jakoncic, Jean; Stojanoff, Vivian] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA.
[Hrnjez, Bruce J.] Yeshiva Univ, Dept Chem, New York, NY 10033 USA.
RP Asherie, N (reprint author), Yeshiva Univ, Dept Phys, Belfer Hall 1412,2495 Amsterdam Ave, New York, NY 10033 USA.
EM asherie@yu.edu
RI stojanoff, vivian /I-7290-2012
OI stojanoff, vivian /0000-0002-6650-512X
FU Yeshiva University; Milton and Miriam Handler Foundation; Kressel
Scholars Program; National Science Foundation [DMR 0961260]; U.S.
Department of Energy, Office of Basic Energy Sciences
[DE-AC02-98CH10886]; [GM-0080]
FX We are grateful to Alessandra Polara for valuable advice and for
conducting the NMR experiments. We thank Paola Dozzo. Jianfeng Jiang,
George Thurston, and Jerome Karp for helpful discussions. We also thank
Charles Boy of Natex UK Limited for generously providing the thumatin
used in this work. Financial support was provided by Yeshiva University
(to N.A.), the Milton and Miriam Handler Foundation (to N.A.), the
Kressel Scholars Program (to N.A. and S.B.), and the National Science
Foundation (to N.A.; DMR 0961260). We thank the staff of the National
Synchrotron Light Source, Brookhaven National Laboratory for their
continuous support. The NSLS is supported by the U.S. Department of
Energy, Office of Basic Energy Sciences, under contract no.
DE-AC02-98CH10886. The NIGMS East Coast Structural Biology Facility, the
X6A beamline, is funded under contract no. GM-0080.
NR 52
TC 18
Z9 18
U1 1
U2 10
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1528-7483
J9 CRYST GROWTH DES
JI Cryst. Growth Des.
PD SEP
PY 2009
VL 9
IS 9
BP 4189
EP 4198
DI 10.1021/cg900465h
PG 10
WC Chemistry, Multidisciplinary; Crystallography; Materials Science,
Multidisciplinary
SC Chemistry; Crystallography; Materials Science
GA 488UN
UT WOS:000269375800056
ER
PT J
AU Korber, B
Gnanakaran, S
AF Korber, Bette
Gnanakaran, S.
TI The implications of patterns in HIV diversity for neutralizing antibody
induction and susceptibility
SO CURRENT OPINION IN HIV AND AIDS
LA English
DT Article
DE diversity; epitope; mosaic vaccines; protein conformation
AB Purpose of review
Designing an HIV vaccine capable of eliciting broadly cross-reactive neutralizing antibodies is an extraordinarily difficult challenge. Here we focus on the implications of HIV diversity for vaccine design, detailing the impact of levels of variation in epitopes of known potent neutralizing antibodies, and summarizing patterns of overall variation in regional domains within gp120. Strategies for rational vaccine design, to enhance coverage of HIV's natural diversity, are considered.
Recent findings
Each amino acid in an envelope gp120 three-dimensional structure was grouped with its 10 nearest neighbors and classified by their natural sequence variability. Within-subtype variation is superimposed on patterns of subtype-specific variation. Regions under selection with moderate diversity are realistic vaccine targets; their variation reflects the value of escape in these regions, whereas the level of diversity is potentially approachable with a vaccine.
Summary
HIV diversity is so extensive that vaccine design strategies may benefit by factoring in diversity from the earliest stages, even for vaccines that target relatively conserved regions.
C1 [Korber, Bette] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87544 USA.
[Korber, Bette] Santa Fe Inst, Santa Fe, NM 87501 USA.
RP Korber, B (reprint author), Los Alamos Natl Lab, Div Theoret, T6,MS K710, Los Alamos, NM 87544 USA.
EM btk@lanl.gov
OI Gnanakaran, S/0000-0002-9368-3044; Korber, Bette/0000-0002-2026-5757
FU NIH, NIAID, Division of AIDS Center for HIV/AIDS Vaccine Immunology
NIAID [AI0678501]; HIVRAD [AI61734]; Bill and Melinda Gates Foundation
[38619]
FX The work was supported by the NIH, NIAID, Division of AIDS Center for
HIV/AIDS Vaccine Immunology NIAID grant AI0678501, and HIVRAD grant
AI61734, and the Bill and Melinda Gates Foundation # 38619. Thanks to
James Theiler, David Montefiori, and Marcus Daniels for help with this
manuscript, and David Montefiori and Barton Haynes for leading the
programs that supported this work.
NR 94
TC 27
Z9 27
U1 0
U2 2
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 1746-630X
J9 CURR OPIN HIV AIDS
JI Curr. Opin. HIV AIDS
PD SEP
PY 2009
VL 4
IS 5
BP 408
EP 417
DI 10.1097/COH.0b013e32832f129e
PG 10
WC Immunology; Infectious Diseases
SC Immunology; Infectious Diseases
GA V19PC
UT WOS:000208083300010
PM 20048705
ER
PT J
AU Lester, RK
Rosner, R
AF Lester, Richard K.
Rosner, Robert
TI The growth of nuclear power: drivers & constraints
SO DAEDALUS
LA English
DT Article
C1 [Lester, Richard K.] MIT, Ind Performance Ctr, Cambridge, MA 02139 USA.
[Rosner, Robert] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA.
[Rosner, Robert] Univ Chicago, Dept Phys, Chicago, IL 60637 USA.
[Rosner, Robert] UChicago Argonne LLC, Chicago, IL USA.
[Rosner, Robert] Argonne Natl Lab, Argonne, IL 60439 USA.
RP Lester, RK (reprint author), MIT, Ind Performance Ctr, Cambridge, MA 02139 USA.
NR 7
TC 6
Z9 6
U1 0
U2 3
PU MIT PRESS
PI CAMBRIDGE
PA 55 HAYWARD STREET, CAMBRIDGE, MA 02142 USA
SN 0011-5266
J9 DAEDALUS-US
JI Daedalus
PD FAL
PY 2009
VL 138
IS 4
BP 19
EP 30
DI 10.1162/daed.2009.138.4.19
PG 12
WC Humanities, Multidisciplinary; Social Sciences, Interdisciplinary
SC Arts & Humanities - Other Topics; Social Sciences - Other Topics
GA 506UR
UT WOS:000270802400002
ER
PT J
AU Breier, JA
Rauch, CG
McCartney, K
Toner, BM
Fakra, SC
White, SN
German, CR
AF Breier, J. A.
Rauch, C. G.
McCartney, K.
Toner, B. M.
Fakra, S. C.
White, S. N.
German, C. R.
TI A suspended-particle rosette multi-sampler for discrete biogeochemical
sampling in low-particle-density waters
SO DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
LA English
DT Article
DE Deep-sea; Hydrothermal vents; Geochemistry; Suspended particles;
Instrumentation; Remotely operated vehicle
ID MID-ATLANTIC RIDGE; RAINBOW HYDROTHERMAL PLUME; DE-FUCA RIDGE; OCEAN;
FLUIDS; GEOCHEMISTRY; BUOYANT; SYSTEMS; VENTS; FIELD
AB To enable detailed investigations of early stage hydrothermal plume formation and abiotic and biotic plume processes we developed a new oceanographic tool. The Suspended Particulate Rosette sampling system has been designed to collect geochemical and microbial samples from the rising portion of deep-sea hydrothermal plumes. It can be deployed on a remotely operated vehicle for sampling rising plumes, on a wire-deployed water rosette for spatially discrete sampling of non-buoyant hydrothermal plumes, or on a fixed mooring in a hydrothermal vent field for time series sampling. It has performed successfully during both its first mooring deployment at the East Pacific Rise and its first remotely-operated vehicle deployments along the Mid-Atlantic Ridge. It is currently capable of rapidly filtering 24 discrete large-water-volume samples (30-100 L. per sample) for suspended particles during a single deployment (e.g. > 90 L per sample at 4-7 L per minute through 1 mu m pore diameter polycarbonate filters). The Suspended Particulate Rosette sampler has been designed with a long-term goal of seafloor observatory deployments, where it can be used to collect samples in response to tectonic or other events. It is compatible with in situ optical sensors, such as laser Raman or visible reflectance spectroscopy systems, enabling in situ particle analysis immediately after sample collection and before the particles alter or degrade. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Breier, J. A.; Rauch, C. G.; White, S. N.; German, C. R.] Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA.
[McCartney, K.] MIT, Cambridge, MA 02139 USA.
[Toner, B. M.] Univ Minnesota Twin Cities, St Paul, MN 55108 USA.
[Fakra, S. C.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Breier, JA (reprint author), Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA.
EM jbreier@whoi.edu
RI Toner, Brandy/N-7911-2016
OI Toner, Brandy/0000-0002-3681-3455
FU Woods Hole Oceanographic Institution's Deep Ocean Exploration Institute;
NSF [OCE-0550331]; Office of Science, Basic Energy Sciences, Division of
Materials Science of the US Department of Energy [DE-AC02-05CH11231]
FX We would like to thank Lauren Mullineaux and the LADDER 2007 cruise crew
and science party (NSF OCE-0424953), and Anna-Louise Reysenbach and the
Mid-Atlantic Ridge 2008 cruise crew and science party (NSF-OCE-0728391,
0525907, 0549829) for allowing us to conduct trial deployments of the
SUPR sampler. The Woods Hole Oceanographic Institution's Deep Ocean
Exploration Institute funded construction of the SUPR sampler.
Postdoctoral support for J.A.B. was through RIDGE 2000 (NSF
OCE-0550331). During development, significant contributions were made by
Mike Purcell and John Fetterman (WHOI), and Ken Doherty and Michael
Mathewson, Ivory Engstrom, and Tim Shanahan (McLane Research
Laboratories Inc.). The Advanced Light Source is supported by the Office
of Science, Basic Energy Sciences, Division of Materials Science of the
US Department of Energy (DE-AC02-05CH11231).
NR 42
TC 20
Z9 20
U1 0
U2 14
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0967-0637
J9 DEEP-SEA RES PT I
JI Deep-Sea Res. Part I-Oceanogr. Res. Pap.
PD SEP
PY 2009
VL 56
IS 9
BP 1579
EP 1589
DI 10.1016/j.dsr.2009.04.005
PG 11
WC Oceanography
SC Oceanography
GA 478TL
UT WOS:000268611100012
ER
PT J
AU Gan, L
Bolker, A
Saguy, C
Kalish, R
Tan, DL
Tay, BK
Gruen, D
Bruno, P
AF Gan, L.
Bolker, A.
Saguy, C.
Kalish, R.
Tan, D. L.
Tay, B. K.
Gruen, D.
Bruno, P.
TI The effect of grain boundaries and adsorbates on the electrical
properties of hydrogenated ultra nano crystalline diamond
SO DIAMOND AND RELATED MATERIALS
LA English
DT Article
DE Ultrananodiamond; Electrical conductivity; Temperature dependent; H and
H(2)O adsorbents
ID ELECTRONIC-PROPERTIES; SURFACE CONDUCTIVITY; AMORPHOUS-CARBON; FILMS;
NANOCRYSTALLINE
AB The results of a comprehensive study on the temperature dependence of the electrical properties of hydrogenated and air exposed undoped UNCD layers following heating/cooling cycles are presented. The results clearly show that, in contrast to hydrogenated and air exposed single crystal type IIa diamond, which exhibits a clear highly conductive p-type surface layer, the electrical properties of hydrogen and H(2)O exposure of UNCD are determined by the properties of the entire layer. The changes in the electrical conductivity of UNCD as a result of heating are governed by two different processes: (i) Loss of water from the external surface that takes place at about 150 degrees C. This process is reversible, reviving the electrical properties upon exposure to humidity, just like in single crystalline diamond.(ii) Modification of the inter-grain material, which occurs at higher temperatures possibly due to H diffusion and passivation of some dangling bonds in the inter-grain material. This increases the resistivity in an irreversible manner. The conduction mechanism in the inter-grain material is characterized by variable range hopping in band tails thus indirectly proving that the material between the grains is some kind of amorphous carbon. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Gan, L.; Bolker, A.; Saguy, C.; Kalish, R.] Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel.
[Gan, L.; Bolker, A.; Saguy, C.; Kalish, R.] Technion Israel Inst Technol, Inst Solid State, IL-32000 Haifa, Israel.
[Tan, D. L.; Tay, B. K.] Nanyang Technol Univ, Dept EEE, Singapore, Singapore.
[Gruen, D.; Bruno, P.] Argonne Natl Labs, Div Mat Sci, Argonne, IL USA.
RP Kalish, R (reprint author), Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel.
EM kalish@sspower.technion.ac.il
RI Tay, Beng Kang/A-5077-2011; bruno, paola/G-5786-2011
OI Tay, Beng Kang/0000-0002-3776-3648;
NR 16
TC 15
Z9 15
U1 1
U2 12
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0925-9635
J9 DIAM RELAT MATER
JI Diam. Relat. Mat.
PD SEP
PY 2009
VL 18
IS 9
BP 1118
EP 1122
DI 10.1016/j.diamond.2009.02.023
PG 5
WC Materials Science, Multidisciplinary
SC Materials Science
GA 478TH
UT WOS:000268610700012
ER
PT J
AU Harvey, SD
Buchko, GW
Lucke, RB
Wright, CW
Melville, AM
Scott, AJ
Wright, BW
AF Harvey, Scott D.
Buchko, Garry W.
Lucke, Richard B.
Wright, Cherylyn W.
Melville, Angela M.
Scott, Anthony J.
Wright, Bob W.
TI The structure and purity of a reference dye standard used for
quantification of CI Solvent Red 164 in fuels
SO DYES AND PIGMENTS
LA English
DT Article
DE Diesel fuel dye; Morton Red 26; CI Solvent Red 26; CI Solvent Red 24;
NIST SRM 2037; Dye purity determination; Dye structure verification
ID SPECTROSCOPY; CHROMATOGRAPHY; PETROLEUM; PROTON; NMR
AB This study characterizes a primary reference dye standard, certified as being 99% C.I. Solvent Red 26, that is used in the United States to identify tax-free fuel, using nuclear magnetic resonance spectroscopy, thin-layer chromatography, gas chromatography/mass spectrometry and high-performance liquid chromatography/mass spectrometry. It was found that 72% of the primary reference dye is equivalent to National Institute of Standards and Technology Standard Reference Material 2037 (C.I. Solvent Red 24). Several of the impurities were tentatively identified and a number of additional impurities were partially characterized. Possible explanations and implications are briefly discussed. (C) 2008 Published by Elsevier Ltd.
C1 [Harvey, Scott D.; Buchko, Garry W.; Lucke, Richard B.; Wright, Cherylyn W.; Melville, Angela M.; Scott, Anthony J.; Wright, Bob W.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Harvey, SD (reprint author), Pacific NW Natl Lab, POB 999,MSIN P8-50, Richland, WA 99352 USA.
EM scott.harvey@pnl.gov
RI Buchko, Garry/G-6173-2015
OI Buchko, Garry/0000-0002-3639-1061
FU U.S. Department of Energy [DE-AC05-76RL01830]
FX This work was supported by the Internal Revenue Service (IRS) under an
Interagency Agreement with the U.S. Department of Energy under Contract
DE-AC05-76RL01830. The views, opinions, or findings contained within
this report are those of the authors and should not be construed as
official position, policy, or decision of the DOE or IRS unless
designated by other documentation. A portion of the research described
in this paper was performed in the William R. Wiley Environmental
Molecular Sciences Laboratory, a national scientific user facility
sponsored by the Department of Energy's Office of Biological and
Environmental Research and located at Pacific Northwest National
Laboratory. Pacific Northwest National Laboratory is a multiprogram
national laboratory operated by Battelle Memorial Institute.
NR 24
TC 3
Z9 3
U1 1
U2 14
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0143-7208
J9 DYES PIGMENTS
JI Dyes Pigment.
PD SEP
PY 2009
VL 82
IS 3
BP 307
EP 315
DI 10.1016/j.dyepig.2009.01.015
PG 9
WC Chemistry, Applied; Engineering, Chemical; Materials Science, Textiles
SC Chemistry; Engineering; Materials Science
GA 452MJ
UT WOS:000266543900008
ER
PT J
AU Dean, D
Bruno, WJ
Wan, R
Gomes, JP
Devignot, S
Mehari, T
de Vries, HJC
Morre, SA
Myers, G
Read, TD
Spratt, BG
AF Dean, Deborah
Bruno, William J.
Wan, Raymond
Gomes, Joao P.
Devignot, Stephanie
Mehari, Tigist
de Vries, Henry J. C.
Morre, Servaas A.
Myers, Garry
Read, Timothy D.
Spratt, Brian G.
TI Predicting Phenotype and Emerging Strains among Chlamydia trachomatis
Infections
SO EMERGING INFECTIOUS DISEASES
LA English
DT Article
ID OUTER-MEMBRANE-PROTEIN; FRAGMENT-LENGTH-POLYMORPHISM;
LYMPHOGRANULOMA-VENEREUM; GENOME SEQUENCES; TISSUE TROPISM; OMPA GENE;
RECOMBINATION; EVOLUTIONARY; SEROVARS; DIVERSITY
AB Chlamydia trachomatis is a global cause of blinding trachoma and sexually transmitted infections (STIs). We used comparative genomics of the family Chlamydiaceae to select conserved housekeeping genes for C. trachomatis multilocus sequencing, characterizing 19 reference and 68 clinical isolates from 6 continental/subcontinental regions. There were 44 sequence types (ST). Identical STs for STI isolates were recovered from different regions, whereas STs for trachoma isolates were restricted by continent. Twenty-nine of 52 alleles had nonuniform distributions of frequencies across regions (p<0.001). Phylogenetic analysis showed 3 disease clusters: invasive lymphogranuloma venereum strains, globally prevalent noninvasive STI strains (ompA genotypes D/Da, E, and F), and nonprevalent STI strains with a trachoma subcluster. Recombinant strains were observed among STI clusters. Single nucleotide polymorphisms (SNPs) were predictive of disease specificity. Multilocus and SNP typing can now be used to detect diverse and emerging C. trachomatis strains for epidemiologic and evolutionary studies of trachoma and STI populations worldwide.
C1 [Dean, Deborah] Childrens Hosp, Oakland Res Inst, Childrens Global Hlth Initiat, Oakland, CA 94609 USA.
[Dean, Deborah] Univ Calif San Francisco, San Francisco, CA 94143 USA.
[Dean, Deborah] Univ Calif Berkeley, Berkeley, CA 94720 USA.
[Bruno, William J.] Los Alamos Natl Lab, Los Alamos, NM USA.
[Gomes, Joao P.] Natl Inst Hlth, Lisbon, Portugal.
[Devignot, Stephanie] Serv Sante Armees, Inst Trop Med, Marseille, France.
[de Vries, Henry J. C.] Univ Amsterdam, NL-1012 WX Amsterdam, Netherlands.
[Morre, Servaas A.] Vrije Univ Amsterdam, Med Ctr, Amsterdam, Netherlands.
[Myers, Garry] Univ Maryland, Sch Med, Baltimore, MD 21201 USA.
[Read, Timothy D.] Emory Univ, Atlanta, GA 30322 USA.
[Spratt, Brian G.] Univ London Imperial Coll Sci Technol & Med, London, England.
RP Dean, D (reprint author), Childrens Hosp, Oakland Res Inst, Childrens Global Hlth Initiat, 5700 Martin Luther King Jr Way, Oakland, CA 94609 USA.
EM ddean@chori.org
RI Read, Timothy/E-6240-2011; de Vries, Henry/K-5963-2012; Myers,
Garry/E-7708-2011;
OI de Vries, Henry/0000-0001-9784-547X; Devignot,
Stephanie/0000-0002-0618-5611; Myers, Garry/0000-0002-4756-4810; Gomes,
Joao Paulo/0000-0002-2697-2399
FU NIH [R01 AI059647, R01 AI039499, R01 EY/AI012219]; European Union
[EU-FP6-LSHG-CT-2007-037637]; Wellcome Trust [030662]
FX This work was supported by NIH grants R01 AI059647, R01 AI039499 and R01
EY/AI012219 (D.D.), a European Union grant EU-FP6-LSHG-CT-2007-037637
(S.A.M.), and a Wellcome Trust Grant 030662 (B.G.S.).
NR 40
TC 51
Z9 52
U1 0
U2 5
PU CENTERS DISEASE CONTROL
PI ATLANTA
PA 1600 CLIFTON RD, ATLANTA, GA 30333 USA
SN 1080-6040
J9 EMERG INFECT DIS
JI Emerg. Infect. Dis
PD SEP
PY 2009
VL 15
IS 9
BP 1385
EP 1394
DI 10.3201/eid1509.090272
PG 10
WC Immunology; Infectious Diseases
SC Immunology; Infectious Diseases
GA 490NK
UT WOS:000269507500007
PM 19788805
ER
PT J
AU Chen, Q
Wang, MR
Pan, N
Guo, ZY
AF Chen, Qun
Wang, Moran
Pan, Ning
Guo, Zeng-Yuan
TI Optimization principles for convective heat transfer
SO ENERGY
LA English
DT Article
DE Convective heat transfer; Entropy generation; Entransy dissipation;
Optimization principle
ID 2ND LAW ANALYSIS; ENTROPY GENERATION; THERMODYNAMIC OPTIMIZATION;
ENTRANSY DISSIPATION; FORCED-CONVECTION; FINITE-TIME; FLUID-FLOW; DUCT;
PERSPECTIVES; TECHNOLOGY
AB Optimization for convective heat transfer plays a significant role in energy saving and high-efficiency utilizing. We compared two optimization principles for convective heat transfer, the minimum entropy generation principle and the entransy dissipation extremum principle, and analyzed their physical implications and applicability. We derived the optimization equation for each optimization principle. The theoretical analysis indicates that both principles can be used to optimize convective heat-transfer process, subject to different objectives of optimization. The minimum entropy generation principle, originally derived from the heat engine cycle process, optimizes the convective heat-transfer process with minimum usable energy dissipation focusing on the heat-work conversion. The entransy dissipation extremum principle however, originally for pure heat conduction process, optimizes the heat-transfer process with minimum heat-transfer ability dissipation, and therefore is more suitable for optimization of the processes not involving heat-work conversion. To validate the theoretical results, we simulated the convective heat-transfer process in a two-dimensional foursquare cavity with a uniform heat source and different temperature boundaries. Under the same constraints, the results indicate that the minimum entropy production principle leads to the highest heat-work conversion while the entransy dissipation extremum principle yields the maximum convective heat-transfer efficiency. Published by Elsevier Ltd.
C1 [Wang, Moran] Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA.
[Chen, Qun] Tsinghua Univ, Dept Engn Mech, Beijing 100084, Peoples R China.
[Pan, Ning] Univ Calif Davis, Dept Biol Syst Engn, Davis, CA 95616 USA.
RP Wang, MR (reprint author), Los Alamos Natl Lab, Div Earth & Environm Sci, POB 1663,Mail Stop T003, Los Alamos, NM 87545 USA.
EM mwang@lanl.gov
RI Wang, Moran/A-1150-2010; Pan, Ning/B-1315-2008
OI Pan, Ning/0000-0002-8772-2596
FU National Key Fundamental R&D Program of China [G2007CB206901]
FX The present work is supported by the National Key Fundamental R&D
Program of China (Grant No. G2007CB206901).
NR 44
TC 108
Z9 140
U1 6
U2 46
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0360-5442
EI 1873-6785
J9 ENERGY
JI Energy
PD SEP
PY 2009
VL 34
IS 9
BP 1199
EP 1206
DI 10.1016/j.energy.2009.04.034
PG 8
WC Thermodynamics; Energy & Fuels
SC Thermodynamics; Energy & Fuels
GA 497QV
UT WOS:000270076600015
ER
PT J
AU Walsh, MR
Hancock, SH
Wilson, SJ
Patil, SL
Moridis, GJ
Boswell, R
Collett, TS
Koh, CA
Sloan, ED
AF Walsh, Matthew R.
Hancock, Steve H.
Wilson, Scott J.
Patil, Shirish L.
Moridis, George J.
Boswell, Ray
Collett, Timothy S.
Koh, Carolyn A.
Sloan, E. Dendy
TI Preliminary report on the commercial viability of gas production from
natural gas hydrates
SO ENERGY ECONOMICS
LA English
DT Article
DE Natural Gas Hydrates; Energy Security; Reservoir Simulation; Hydrate
Economics; Uncertainty
AB Economic studies on simulated gas hydrate reservoirs have been compiled to estimate the price of natural gas that may lead to economically viable production from the most promising gas hydrate accumulations. As a first estimate, $CDN2005 12/Mscf is the lowest gas price that would allow economically viable production from gas hydrates in the absence of associated free gas, while an underlying gas deposit will reduce the viability price estimate to $CDN2005 7.50/Mscf. Results from a recent analysis of the simulated production of natural gas from marine hydrate deposits are also considered in this report; on an IROR basis. it is $US2008 3.50-4.00/Mscf more expensive to produce marine hydrates than conventional marine gas assuming the existence of sufficiently large marine hydrate accumulations. While these prices represent the best available estimates, the economic evaluation of a specific project is highly dependent on the producibility of the target zone, the amount of gas in place, the associated geologic and depositional environment, existing pipeline infrastructure, and local tariffs and taxes. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Walsh, Matthew R.; Koh, Carolyn A.; Sloan, E. Dendy] Colorado Sch Mines, Dept Chem Engn, Golden, CO 80401 USA.
[Patil, Shirish L.] Univ Alaska Fairbanks, Petr Dev Lab, Fairbanks, AK 99775 USA.
[Moridis, George J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Boswell, Ray] US DOE, Natl Energy Technol Lab, Morgantown, WV 26507 USA.
[Collett, Timothy S.] US Geol Survey, Denver Fed Ctr, Denver, CO 80225 USA.
RP Sloan, ED (reprint author), Colorado Sch Mines, Dept Chem Engn, 1500 Illinois St, Golden, CO 80401 USA.
EM esloan@mines.edu
OI Boswell, Ray/0000-0002-3824-2967
NR 26
TC 31
Z9 34
U1 0
U2 18
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0140-9883
EI 1873-6181
J9 ENERG ECON
JI Energy Econ.
PD SEP
PY 2009
VL 31
IS 5
BP 815
EP 823
DI 10.1016/j.eneco.2009.03.006
PG 9
WC Economics
SC Business & Economics
GA 482XD
UT WOS:000268923000019
ER
PT J
AU Chen, Q
Wang, MR
Pan, N
Guo, ZY
AF Chen, Qun
Wang, Moran
Pan, Ning
Guo, Zeng-Yuan
TI Optimization Principle for Variable Viscosity Fluid Flow and Its
Application to Heavy Oil Flow Drag Reduction
SO ENERGY & FUELS
LA English
DT Article
ID CRUDE-OIL; TURBULENT-BOUNDARY; WATER; SURFACES; RIBLETS
AB Drag reduction in heavy oil transport systems is a key for high-efficiency oil transfer and, thus, for energy conservation. fit this paper, we investigated the influence of viscosity, velocity, and velocity-gradient fields on drag resistance in fluid flow with variable viscosity in terms of the field synergy. The theoretical analysis indicates that the drag during varying viscosity fluid flow processes depends upon not only the synergy between the, velocity and its gradient over the entire flow domain but also the viscosity and velocity gradient,it the boundary, That is, for a given now rate or inlet velocity, simultaneously reducing the fluid flow field synergy number over the entire flow domain and decreasing the fluid viscosity and the velocity gradient at the boundary will lead to a smaller flow resistance. In addition, starting from the basic governing equation and via the calculus of variations, we derived Euler's equation, essentially the momentum equation with a special additional volume force, using the criterion of the minimum viscous dissipation rate to optimize the flow processes for varying viscosity fluid. For fixed Row rate or Inlet velocity, solving Euler's equation will result in the optimal velocity and viscosity Fields, leading to the minimized now resistance. Finally, a thermal insulating transport process for heavy oil was taken as a testing case to demonstrate the application of the theory. The results show that generating longitudinal vortexes to enhance the transfer performance of heavy oil will facilitate the flow drag reduction. For instance, when the inlet heavy oil velocity and the external effective heat-transfer coefficient are 0.01 in/s and 2 W m(-2) K(-1), respectively.. the total viscous dissipation rate with a certain presence of longitudinal vortexes is decreased by 19% compared to the. result without the vortexes.
C1 [Wang, Moran] Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA.
[Chen, Qun; Guo, Zeng-Yuan] Tsinghua Univ, Dept Engn Mech, Minist Educ, Key Lab Thermal Sci & Power Engn, Beijing 100084, Peoples R China.
[Pan, Ning] Univ Calif Davis, Dept Biol Syst Engn, Davis, CA 95616 USA.
RP Wang, MR (reprint author), Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA.
EM mwang@lanl.gov
RI Wang, Moran/A-1150-2010; Pan, Ning/B-1315-2008
OI Pan, Ning/0000-0002-8772-2596
NR 19
TC 12
Z9 13
U1 2
U2 24
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0887-0624
J9 ENERG FUEL
JI Energy Fuels
PD SEP
PY 2009
VL 23
BP 4470
EP 4478
DI 10.1021/ef900107b
PG 9
WC Energy & Fuels; Engineering, Chemical
SC Energy & Fuels; Engineering
GA 505EG
UT WOS:000270671500032
ER
PT J
AU Kim, YJ
Moon, JW
Roh, Y
Brooks, SC
AF Kim, Young-Jin
Moon, Ji-Won
Roh, Yul
Brooks, Scott C.
TI Mineralogical characterization of saprolite at the FRC background site
in Oak Ridge, Tennessee
SO ENVIRONMENTAL GEOLOGY
LA English
DT Article
DE Field Research Center (FRC); Saprolite; Remediation; Mineralogy
ID U(VI) REDUCTION; URANIUM; SOIL; BIOREMEDIATION; INHIBITION; AQUIFER;
CALCIUM; NITRATE
AB The Field Research Center (FRC) including five contaminated sites and a clean background area was established in Oak Ridge, Tennessee, as a part of the U.S. Department of Energy's Natural and Accelerated Bioremediation Research (NABIR) program. This study investigates the mineralogy and mineralogical pathways of saprolite at the FRC background site to provide a fundamental basis for the remediation strategy for contaminated sites. The background site is underlain interbedded shales, siltstones, and limestones with nearly identical characteristics to the contaminated sites. Bulk samples of saprolite were collected by hand picking approximately at 1 m depth (C horizon) from the soil surface. The soil pH of 4.3 and cation exchange capacity (CEC) of 10.5 cmol/kg measured are in the range of the typical shallow depth saprolite layer in this area. Total Fe by citrate-bicarbonate-dithionate (CBD) and ammonium oxalate extractable (amorphous) were 17.6 and 0.61 g/kg, respectively. Total Mn extracted by NH2OH center dot HCl was 0.17 g/kg. X-ray diffraction (XRD) and scanning electron microscopy (SEM) analyses indicate that quartz, illite, and microcline (K-feldspar) are the dominant minerals, occupying 95% of mineral composition. The saprolite samples analyzed have shown characteristics of oxic conditions overall, and the degrees of weathering for three sampling locations were various, most for S1 and least for S3, likely influenced either by the flow channels developed through saprolite or by seasonal fluctuation of the groundwater table. The source of the manganese oxide that observed from the site is likely to be Mn-rich muscovite in the shale or Mn-rich biotite in the blackish band in the limestone. The results such as abundant Mn and Fe contents identified encouraging prospects for conducting remediation projects in FRC sites.
C1 [Kim, Young-Jin] Seoul Natl Univ, Dept Civil & Environm Engn, Seoul 151742, South Korea.
[Moon, Ji-Won; Brooks, Scott C.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA.
[Roh, Yul] Chonnam Natl Univ, Dept Earth Syst & Environm Sci, Kwangju 500757, South Korea.
RP Kim, YJ (reprint author), Seoul Natl Univ, Dept Civil & Environm Engn, Seoul 151742, South Korea.
EM yk70@snu.ac.kr
RI Moon, Ji-Won/A-9186-2011; Brooks, Scott/B-9439-2012
OI Moon, Ji-Won/0000-0001-7776-6889; Brooks, Scott/0000-0002-8437-9788
NR 26
TC 9
Z9 9
U1 1
U2 16
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0943-0105
J9 ENVIRON GEOL
JI Environ. Geol.
PD SEP
PY 2009
VL 58
IS 6
BP 1301
EP 1307
DI 10.1007/s00254-008-1633-1
PG 7
WC Environmental Sciences; Geosciences, Multidisciplinary; Water Resources
SC Environmental Sciences & Ecology; Geology; Water Resources
GA 484VO
UT WOS:000269076800016
ER
PT J
AU Walker, CB
Stolyar, S
Chivian, D
Pinel, N
Gabster, JA
Dehal, PS
He, ZL
Yang, ZK
Yen, HCB
Zhou, JZ
Wall, JD
Hazen, TC
Arkin, AP
Stahl, DA
AF Walker, Christopher B.
Stolyar, Sergey
Chivian, Dylan
Pinel, Nicolas
Gabster, Jeffrey A.
Dehal, Paramvir S.
He, Zhili
Yang, Zamin Koo
Yen, Huei-Che B.
Zhou, Jizhong
Wall, Judy D.
Hazen, Terry C.
Arkin, Adam P.
Stahl, David A.
TI Contribution of mobile genetic elements to Desulfovibrio vulgaris genome
plasticity
SO ENVIRONMENTAL MICROBIOLOGY
LA English
DT Article
ID PROKARYOTES; REPEATS; DETOXIFICATION; HILDENBOROUGH; SEQUENCE; VIRUSES;
STRAIN; SITES; TOOL
AB P>The genome of Desulfovibrio vulgaris strain DePue, a sulfate-reducing Deltaproteobacterium isolated from heavy metal-impacted lake sediment, was completely sequenced and compared with the type strain D. vulgaris Hildenborough. The two genomes share a high degree of relatedness and synteny, but harbour distinct prophage and signatures of past phage encounters. In addition to a highly variable phage contribution, the genome of strain DePue contains a cluster of open-reading frames not found in strain Hildenborough coding for the production and export of a capsule exopolysaccharide, possibly of relevance to heavy metal resistance. Comparative whole-genome microarray analysis on four additional D. vulgaris strains established greater interstrain variation within regions associated with phage insertion and exopolysaccharide biosynthesis.
C1 [Walker, Christopher B.; Stolyar, Sergey; Pinel, Nicolas; Gabster, Jeffrey A.; Stahl, David A.] Univ Washington, Dept Civil & Environm Engn, Seattle, WA 98195 USA.
[Chivian, Dylan; Dehal, Paramvir S.; Hazen, Terry C.; Arkin, Adam P.] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
[He, Zhili; Zhou, Jizhong] Univ Oklahoma, Inst Environm Genom, Norman, OK 73019 USA.
[Yen, Huei-Che B.; Wall, Judy D.] Univ Missouri, Div Biochem, Columbia, MO USA.
[Yang, Zamin Koo] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA.
RP Stahl, DA (reprint author), Univ Washington, Dept Civil & Environm Engn, Seattle, WA 98195 USA.
EM dastahl@u.washington.edu
RI He, Zhili/C-2879-2012; Arkin, Adam/A-6751-2008; Hazen, Terry/C-1076-2012
OI Arkin, Adam/0000-0002-4999-2931; Hazen, Terry/0000-0002-2536-9993
NR 25
TC 10
Z9 286
U1 1
U2 20
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 1462-2912
J9 ENVIRON MICROBIOL
JI Environ. Microbiol.
PD SEP
PY 2009
VL 11
IS 9
BP 2244
EP 2252
DI 10.1111/j.1462-2920.2009.01946.x
PG 9
WC Microbiology
SC Microbiology
GA 490WV
UT WOS:000269539700007
PM 19737303
ER
PT J
AU Yagi, JM
Sims, D
Brettin, T
Bruce, D
Madsen, EL
AF Yagi, Jane M.
Sims, David
Brettin, Thomas
Bruce, David
Madsen, Eugene L.
TI The genome of Polaromonas naphthalenivorans strain CJ2, isolated from
coal tar-contaminated sediment, reveals physiological and metabolic
versatility and evolution through extensive horizontal gene transfer
SO ENVIRONMENTAL MICROBIOLOGY
LA English
DT Article
ID BURKHOLDERIA-XENOVORANS LB400; AMMONIA-OXIDIZING BACTERIUM;
MESSENGER-RNA TRANSCRIPTS; SP-NOV.; IN-SITU; TRANSPORT CAPABILITIES;
DEGRADING BACTERIUM; DIOXYGENASE GENES; CATABOLIC PATHWAY;
ESCHERICHIA-COLI
AB P>We analysed the genome of the aromatic hydrocarbon-degrading, facultatively chemolithotrophic betaproteobacterium, Polaromonas naphthalenivorans strain CJ2. Recent work has increasingly shown that Polaromonas species are prevalent in a variety of pristine oligotrophic environments, as well as polluted habitats. Besides a circular chromosome of 4.4 Mb, strain CJ2 carries eight plasmids ranging from 353 to 6.4 kb in size. Overall, the genome is predicted to encode 4929 proteins. Comparisons of DNA sequences at the individual gene, gene cluster and whole-genome scales revealed strong trends in shared heredity between strain CJ2 and other members of the Comamonadaceae and Burkholderiaceae. blastp analyses of protein coding sequences across strain CJ2's genome showed that genetic commonalities with other betaproteobacteria diminished significantly in strain CJ2's plasmids compared with the chromosome, especially for the smallest ones. Broad trends in nucleotide characteristics (GC content, GC skew, Karlin signature difference) showed at least six anomalous regions in the chromosome, indicating alteration of genome architecture via horizontal gene transfer. Detailed analysis of one of these anomalous regions (96 kb in size, containing the nag-like naphthalene catabolic operon) indicates that the fragment's insertion site was within a putative MiaB-like tRNA-modifying enzyme coding sequence. The mosaic nature of strain CJ2's genome was further emphasized by the presence of 309 mobile genetic elements scattered throughout the genome, including 131 predicted transposase genes, 178 phage-related genes, and representatives of 12 families of insertion elements. A total of three different terminal oxidase genes were found (putative cytochrome aa(3)-type oxidase, cytochrome cbb(3)-type oxidase and cytochrome bd-type quinol oxidase), suggesting adaptation by strain CJ2 to variable aerobic and microaerobic conditions. Sequence-suggested abilities of strain CJ2 to carry out nitrogen fixation and grow on the aromatic compounds, biphenyl and benzoate, were experimentally verified. These new phenotypes and genotypes set the stage for gaining additional insights into the physiology and biochemistry contributing to strain CJ2's fitness in its native habitat, contaminated sediment.
C1 [Yagi, Jane M.; Madsen, Eugene L.] Cornell Univ, Dept Microbiol, Ithaca, NY 14853 USA.
[Sims, David; Brettin, Thomas] Los Alamos Natl Lab, Joint Genome Inst, Biosci Div, Los Alamos, NM 87545 USA.
[Bruce, David] Joint Genome Inst, Walnut Creek, CA 94598 USA.
RP Madsen, EL (reprint author), Cornell Univ, Dept Microbiol, Ithaca, NY 14853 USA.
EM elm3@cornell.edu
FU US Department of Energy's; University of California, Lawrence Berkeley
National Laboratory [DE-AC02-05CH11231]; Lawrence Livermore National
Laboratory [DE-AC52-07NA27344]; Los Alamos National Laboratory
[DE-AC02-06NA25396]; National Institute of Environmental Health Sciences
[R21-ES012834]; NSF [DEB-0841999, 5-T32-ES00752-28]
FX The sequencing and automatic annotation work was performed under the
auspices of the US Department of Energy's Office of Science, Biological
and Environmental Research Program, and by the University of California,
Lawrence Berkeley National Laboratory under contract No.
DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract
No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract
No. DE-AC02-06NA25396. We thank Graham Pumphrey for sharing data
describing growth of strain CJ2 on biphenyl and benzoate (Fig. S3). This
study was supported by funding from the National Institute of
Environmental Health Sciences R21-ES012834 and NSF DEB-0841999. J.M.Y.
was supported in part by the NSF IGERT Program in Biogechemistry and
Environmental Complexity and a National Institute of Environmental
Health Sciences Toxicology Traineeship 5-T32-ES00752-28.
NR 100
TC 41
Z9 42
U1 2
U2 16
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 1462-2912
J9 ENVIRON MICROBIOL
JI Environ. Microbiol.
PD SEP
PY 2009
VL 11
IS 9
BP 2253
EP 2270
DI 10.1111/j.1462-2920.2009.01947.x
PG 18
WC Microbiology
SC Microbiology
GA 490WV
UT WOS:000269539700008
PM 19453698
ER
PT J
AU Anenberg, SC
West, JJ
Fiore, AM
Jaffe, DA
Prather, MJ
Bergmann, D
Cuvelier, K
Dentener, FJ
Duncan, BN
Gauss, M
Hess, P
Jonson, JE
Lupu, A
MacKenzie, IA
Marmer, E
Park, RJ
Sanderson, MG
Schultz, M
Shindell, DT
Szopa, S
Vivanco, MG
Wild, O
Zang, G
AF Anenberg, Susan Casper
West, J. Jason
Fiore, Arlene M.
Jaffe, Daniel A.
Prather, Michael J.
Bergmann, Daniel
Cuvelier, Kees
Dentener, Frank J.
Duncan, Bryan N.
Gauss, Michael
Hess, Peter
Jonson, Jan Eiof
Lupu, Alexandru
MacKenzie, Ian A.
Marmer, Elina
Park, Rokjin J.
Sanderson, Michael G.
Schultz, Martin
Shindell, Drew T.
Szopa, Sophie
Garcia Vivanco, Marta
Wild, Oliver
Zang, Guang
TI Intercontinental Impacts of Ozone Pollution on Human Mortality
SO ENVIRONMENTAL SCIENCE & TECHNOLOGY
LA English
DT Article
ID TROPOSPHERIC OZONE; HEALTH-BENEFITS; AIR-POLLUTION; METAANALYSIS;
EMISSIONS
AB Ozone exposure is associated with negative health impacts, including premature mortality. Observations and modeling studies demonstrate that emissions from one continent influence ozone air quality over other continents. We estimate the premature mortalities avoided from surface ozone decreases obtained via combined 20% reductions of anthropogenic nitrogen oxide, nonmethane volatile organic compound, and carbon monoxide emissions in North America (NA), East Asia (EA), South Asia (SA), and Europe (EU). We use estimates of ozone responses to these emission changes from several atmospheric chemical transport models combined with a health impact function. Foreign emission reductions contribute approximately 30%, 30%, 20%, and > 50% of the mortalities avoided by reducing precursor emissions in all regions together in NA, EA, SA, and EU, respectively. Reducing emissions in NA and EU avoids more mortalities outside the source region than within, owing in part to larger populations in foreign regions. Lowering the global methane abundance by 20% reduces mortality most in SA,followed by EU, EA, and NA. For some source-receptor pairs, there is greater uncertainty in our estimated avoided mortalities associated with the modeled ozone responses to emission changes than with the health impact function parameters.
C1 [Anenberg, Susan Casper; West, J. Jason] Univ N Carolina, Chapel Hill, NC 27515 USA.
[Fiore, Arlene M.] NOAA, Geophys Fluid Dynam Lab, Princeton, NJ USA.
[Jaffe, Daniel A.] Univ Washington Bothell, Bothell, WA USA.
[Prather, Michael J.] Univ Calif Irvine, Irvine, CA USA.
[Bergmann, Daniel] Lawrence Livermore Natl Lab, Div Atmospher Sci, Livermore, CA USA.
[Cuvelier, Kees; Dentener, Frank J.] Commiss European Communities, DG Joint Res Ctr, Inst Environm & Sustainability, Ispra, Italy.
[Gauss, Michael; Sanderson, Michael G.] Univ Oslo, Dept Geosci, N-0316 Oslo, Norway.
[Gauss, Michael; Jonson, Jan Eiof; Szopa, Sophie] Norwegian Meteorol Inst, Oslo, Norway.
[Hess, Peter] Natl Ctr Atmospher Res, Boulder, CO 80307 USA.
[Hess, Peter] Cornell Univ, Ithaca, NY USA.
[Lupu, Alexandru] York Univ, Ctr Res Earth & Space Sci, N York, ON M3J 1P3, Canada.
[MacKenzie, Ian A.] Univ Edinburgh, Sch Geosci, Edinburgh EH8 9YL, Midlothian, Scotland.
[Park, Rokjin J.] Harvard Univ, Atmospher Chem Modeling Grp, Cambridge, MA 02138 USA.
[Sanderson, Michael G.] Hadley Ctr, Met Off, Exeter, Devon, England.
[Schultz, Martin] Forschungszentrum Julich, ICG 2, Julich, Germany.
[Shindell, Drew T.] NASA, Goddard Inst Space Studies, New York, NY 10025 USA.
[Shindell, Drew T.] Columbia Univ, New York, NY USA.
[Szopa, Sophie] UVSQ, CNRS, CEA, Lab Sci Climat & Environm,IPSL, Gif Sur Yvette, France.
[Garcia Vivanco, Marta] CIEMAT, E-28040 Madrid, Spain.
[Wild, Oliver] Univ Lancaster, Lancaster Environm Ctr, Lancaster LA1 4YW, England.
[Zang, Guang] Univ Cambridge, Dept Chem, Natl Ctr Atmospher Sci, Cambridge CB2 1TN, England.
RP West, JJ (reprint author), Univ N Carolina, Chapel Hill, NC 27515 USA.
EM jasonwest@unc.edu
RI West, Jason/J-2322-2015; Park, Rokjin/I-5055-2012; Hess,
Peter/M-3145-2015; Wild, Oliver/A-4909-2009; Szopa, Sophie/F-8984-2010;
Lupu, Alexandru/D-3689-2009; Bergmann, Daniel/F-9801-2011; Shindell,
Drew/D-4636-2012; Duncan, Bryan/A-5962-2011; Schultz,
Martin/I-9512-2012; mackenzie, ian/E-9320-2013; Vivanco,
Marta/L-9816-2014
OI West, Jason/0000-0001-5652-4987; Park, Rokjin/0000-0001-8922-0234; Hess,
Peter/0000-0003-2439-3796; Wild, Oliver/0000-0002-6227-7035; Szopa,
Sophie/0000-0002-8641-1737; Lupu, Alexandru/0000-0002-4520-5523;
Bergmann, Daniel/0000-0003-4357-6301; Schultz,
Martin/0000-0003-3455-774X; Vivanco, Marta/0000-0002-5828-1859
FU Merck Foundation; University of North Carolina Junior Faculty
Development Award; Canadian Foundation for Climate and Atmospheric
Sciences; Ontario Ministry of the Environment; Canadian Foundation for
Innovation; Ontario Innovation Trust; Research Settlement Fund; NERC
[NE/D012538/1]; Defra [AQ0409]; DECC/Defra [GA01101]; MOD
[CBC/2B/0417-Annex C5]
FX This work was Supported by the Merck Foundation and a University of
North Carolina Junior Faculty Development Award. Model Simulations were
performed under the UN ECE Task Force oil Hemispheric Transport of Air
Pollution. A.L. acknowledges financial support from the Canadian
Foundation for Climate and Atmospheric Sciences, the Ontario Ministry of
the Environment, the Canadian Foundation for Innovation and the Ontario
Innovation Trust. R.J.P. was partly supported by Research Settlement
Fund for the new faculty of SNU. I.A.M. acknowledges funding from NERC
(NE/D012538/1). M.G.S. was supported by Defra (AQ0409), DECC/Defra
(GA01101), and MOD (CBC/2B/0417-Annex C5).
NR 25
TC 39
Z9 40
U1 5
U2 28
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0013-936X
EI 1520-5851
J9 ENVIRON SCI TECHNOL
JI Environ. Sci. Technol.
PD SEP 1
PY 2009
VL 43
IS 17
BP 6482
EP 6487
DI 10.1021/es900518z
PG 6
WC Engineering, Environmental; Environmental Sciences
SC Engineering; Environmental Sciences & Ecology
GA 487GB
UT WOS:000269258000012
PM 19764205
ER
PT J
AU Liu, CX
Shi, ZQ
Zachara, JM
AF Liu, Chongxuan
Shi, Zhenqing
Zachara, John M.
TI Kinetics of Uranium(VI) Desorption from Contaminated Sediments: Effect
of Geochemical Conditions and Model Evaluation
SO ENVIRONMENTAL SCIENCE & TECHNOLOGY
LA English
DT Article
ID HANFORD-SITE; SUBSURFACE SEDIMENTS; MASS-TRANSFER; VADOSE ZONE; USA;
WASHINGTON; ADSORPTION; TRANSPORT; SORPTION; MEDIA
AB Stirred-flow cell experiments were performed to investigate the kinetics of uranyl [U(VI)] desorption from a contaminated sediment collected from the Hanford 300 Area at the U.S. Department of Energy Hanford Site, Washington. Three influent solutions of variable pH, Ca and carbonate concentrations that affected U(VI) aqueous and surface speciation were used under dynamic flow conditions to evaluate the effect of geochemical conditions on the rate of U(VI) desorption. The measured rate of U(VI) desorption varied with solution chemical composition that evolved as a result of thermodynamic and kinetic interactions between the solutions and sediment. The solution chemical composition that led to a larger disequilibrium between adsorbed U(VI) and equilibrium adsorption state yielded a faster desorption rate. The experimental results were used to evaluate a multirate, surface complexation model (SCM) that has been proposed to describe U(VI) desorption kinetics in the Hanford sediment that contained complex adsorbed U(VI) in mass transfer limited domains (Lui et al. Water Resour. Res. 2008, 44, W08413). The model was modified and supplemented by including multirate, ion exchange reactions to describe the geochemical interactions between the solutions and sediment With the same set of model parameters, the modified model reasonably well described the evolution of major ions and the rates of U(VI) desorption under variable geochemical and flow conditions, implying that the multirate SCM is an effective way to describe U(VI) desorption kinetics in subsurface sediments.
C1 [Liu, Chongxuan; Shi, Zhenqing; Zachara, John M.] Pacific NW Natl Lab, Richland, WA 99354 USA.
RP Liu, CX (reprint author), Pacific NW Natl Lab, Richland, WA 99354 USA.
EM Chongxuan.liu@pnl.gov
RI Liu, Chongxuan/C-5580-2009; Shi, Zhenqing /F-9212-2016
FU U.S. Department of Energy (DOE) [DE-AC06-76RLO 1830]; Integrative Field
Research Challenge (IFRC) at Hanford
FX This research was supported by the U.S. Department of Energy (DOE)
through the Environmental Remediation Science Division (ERSD) Science
Focus Area (SFA) program and partially Supported by the Integrative
Field Research Challenge (IFRC) at Hanford 300 Area. PNNL is operated
for the DOE by Battelle Memorial Institute under contract DE-AC06-76RLO
1830. We thank three anonymous reviewers for their constructive
comments.
NR 23
TC 46
Z9 47
U1 2
U2 55
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0013-936X
J9 ENVIRON SCI TECHNOL
JI Environ. Sci. Technol.
PD SEP 1
PY 2009
VL 43
IS 17
BP 6560
EP 6566
DI 10.1021/es900666m
PG 7
WC Engineering, Environmental; Environmental Sciences
SC Engineering; Environmental Sciences & Ecology
GA 487GB
UT WOS:000269258000024
PM 19764217
ER
PT J
AU Mathews, T
Beaugelin-Seiller, K
Garnier-Laplace, J
Gilbin, R
Adam, C
Della-Vedova, C
AF Mathews, Teresa
Beaugelin-Seiller, Karine
Garnier-Laplace, Jacqueline
Gilbin, Rodolphe
Adam, Christelle
Della-Vedova, Claire
TI A Probabilistic Assessment of the Chemical and Radiological Risks of
Chronic Exposure to Uranium in Freshwater Ecosystems
SO ENVIRONMENTAL SCIENCE & TECHNOLOGY
LA English
DT Article
ID DEPLETED URANIUM; DAPHNIA-MAGNA; ENVIRONMENT; THRESHOLDS; DERIVATION;
RADIATION; TOXICITY
AB Uranium (U) presents a unique challenge for ecological risk assessments (ERA) because it induces both chemical and radiological toxicity, and the relative importance of these two toxicities differs among the various U source terms (i.e., natural, enriched, depleted). We present a method for the conversion between chemical concentrations (mu g L(-1)) and radiological dose rates (mu Gy h(-1)) for a defined set of reference organisms, and apply this conversion method to previously derived chemical and radiological benchmarks to determine the extent to which these benchmarks ensure radiological and chemical protection, respectively, for U in freshwater ecosystems. Results show that the percentage of species radiologically protected by the chemical benchmark decreases with increasing degrees of 0 enrichment and with increasing periods of radioactive decay. In contrast, the freshwater ecosystem is almost never chemically protected by the radiological benchmark, regardless of the source term or decay period considered, confirming that the risks to the environment from uranium's chemical toxicity generally outweigh those of its radiological toxicity. These results are relevant to developing water quality criteria that protect freshwater ecosystems from the various risks associated with the nuclear applications of U exploitation, and highlight the need for (1) further research on the speciation, bioavailability, and toxicity of U-series radionuclides under different environmental conditions, and (2) the adoption of both chemical and radiological benchmarks for coherent ERAS to be conducted in U-contaminated freshwater ecosystems.
C1 [Mathews, Teresa; Beaugelin-Seiller, Karine; Garnier-Laplace, Jacqueline; Gilbin, Rodolphe; Adam, Christelle] Inst Radioprotect & Surete Nucl, Serv Etud Comportement Radionucl Ecosyst, F-13115 Cadarache, St Paul Durance, France.
[Della-Vedova, Claire] Magelis, F-84160 Cadenet, France.
RP Mathews, T (reprint author), Oak Ridge Natl Lab, Div Environm Sci, Bldg 1504, Oak Ridge, TN 37831 USA.
EM mathewstj@ornl.gov
OI Jacqueline, Garnier-Laplace/0000-0002-3486-147X; Gilbin,
Rodolphe/0000-0002-6503-9198
NR 28
TC 30
Z9 30
U1 1
U2 20
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0013-936X
J9 ENVIRON SCI TECHNOL
JI Environ. Sci. Technol.
PD SEP 1
PY 2009
VL 43
IS 17
BP 6684
EP 6690
DI 10.1021/es9005288
PG 7
WC Engineering, Environmental; Environmental Sciences
SC Engineering; Environmental Sciences & Ecology
GA 487GB
UT WOS:000269258000042
PM 19764235
ER
PT J
AU Melton, SJ
Yu, H
Williams, KH
Morris, SA
Long, PE
Blake, DA
AF Melton, Scott J.
Yu, Haini
Williams, Kenneth H.
Morris, Sarah A.
Long, Philip E.
Blake, Diane A.
TI Field-Based Detection and Monitoring of Uranium in Contaminated
Groundwater using Two Immunosensors
SO ENVIRONMENTAL SCIENCE & TECHNOLOGY
LA English
DT Article
ID MONOCLONAL-ANTIBODY; BINDING-PROPERTIES; BIOREMEDIATION; VALIDATION;
REDUCTION; CALCIUM; SITE
AB Field-based monitoring of environmental contaminants has long been a need for environmental scientists. Described herein are two kinetic exclusion-based immunosensors a field portable sensor (FPS) and an inline senor, that here deployed at the Integrated Field Research Challenge Site of the U.S. Department of Energy in Rifle, CO. Both sensors utilized a monoclonal antibody that binds to a U(VI)-dicarboxyphenanthroline complex (DCP) in a kinetic exclusion immunoassay format These sensors were able to monitor changes of uranium in groundwater samples from similar to 1 mu M to below the regulated drinking water limit of 126 nM (30 ppb). The FPS is a battery-operated sensor platform that can determine the uranium level in a single sample in 5-10 min, if the instrument has been previously calibrated with standards. The average minimum detection level (MDL) in this assay was 0.33 nM (79 ppt), and the MDL in the sample (based on a 1:200-1:400 dilution) was 66-132 nM (15.7-31.4 ppb), The inline sensor, while requiring a grounded power source, has the ability to autonomously analyze multiple samples in a single experiment The average MDL in this assay was 0.12 nM (29 ppt), and the MDL in the samples (based on 1:200 or 1:400 dilutions) was 24-48 nM (5.7-11.4 ppb). Both sensor platforms showed an acceptable level of agreement (r(2) = 0.94 and 0.76, for the inline and FPS, respectively) with conventional methods for uranium quantification.
C1 [Melton, Scott J.; Yu, Haini; Blake, Diane A.] Tulane Univ, Sch Med, Dept Biochem, New Orleans, LA 70112 USA.
[Williams, Kenneth H.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Morris, Sarah A.] SM Stoller Corp, Grand Junction, CO 81503 USA.
[Long, Philip E.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Blake, DA (reprint author), Tulane Univ, Sch Med, Dept Biochem, New Orleans, LA 70112 USA.
EM blake@tulane.edu
RI Long, Philip/F-5728-2013; Williams, Kenneth/O-5181-2014
OI Long, Philip/0000-0003-4152-5682; Williams, Kenneth/0000-0002-3568-1155
FU U.S. Department of Energy [DE-FG98-ER62704]; Office of Naval Research
[NA06NOS4260226]; NOAA [NA06NOS4260226]; Tulane Phase II Katrina Fund;
ERSP; Office of Science, U.S. Department of Energy; LBNL DOE
[DE-AC02-05CH11231]
FX This work was supported by the U.S. Department of Energy, Grant
DE-FG98-ER62704, the Office of Naval Research (NA06NOS4260226), NOAA
(Grant NA06NOS4260226) and the Tulane Phase II Katrina Fund. (D.A.B.),
Field experiments were conducted as part of the U.S. Department of
Energy's Integrated Field Research Challenge Site (IFRC) at Rifle,
Colorado, The Rifle IFRC is led by Pacific Northwest National Lab and is
supported by the ERSP, Office of Science, U.S. Department of Energy and
LBNL DOE contract number DE-AC02-05CH11231. The authors thank Kate M.
Campbell (USGS, Menlo Park, CA) for providing the Rifle artificial
groundwater formulation, Lucie A. N'Guessan (PNNL), Michael J. Wilkins,
A. Pepper Yelton and Audrey M. Yau (UC Berkeley) for assistance in
sample collection.
NR 22
TC 14
Z9 15
U1 1
U2 15
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0013-936X
EI 1520-5851
J9 ENVIRON SCI TECHNOL
JI Environ. Sci. Technol.
PD SEP 1
PY 2009
VL 43
IS 17
BP 6703
EP 6709
DI 10.1021/es9007239
PG 7
WC Engineering, Environmental; Environmental Sciences
SC Engineering; Environmental Sciences & Ecology
GA 487GB
UT WOS:000269258000045
PM 19764238
ER
PT J
AU Williams, KH
Kemna, A
Wilkins, MJ
Druhan, J
Arntzen, E
N'Guessan, AL
Long, PE
Hubbard, SS
Banfield, JF
AF Williams, Kenneth H.
Kemna, Andreas
Wilkins, Michael J.
Druhan, Jennifer
Arntzen, Evan
N'Guessan, A. Lucie
Long, Philip E.
Hubbard, Susan S.
Banfield, Jillian F.
TI Geophysical Monitoring of Coupled Microbial and Geochemical Processes
During Stimulated Subsurface Bioremediation
SO ENVIRONMENTAL SCIENCE & TECHNOLOGY
LA English
DT Article
ID INDUCED-POLARIZATION; ELECTRON-TRANSFER; ENVIRONMENTAL APPLICATIONS;
URANIUM BIOREMEDIATION; CONTAMINATED AQUIFER; HYDROGEN-SULFIDE; IRON;
OXIDATION; SEDIMENTS; METAL
AB Understanding how microorganisms alter their physical and chemical environment during bioremediation is hindered by our inability to resolve Subsurface microbial activity with high spatial resolution. Here we demonstrate the use of a minimally invasive geophysical technique to monitor stimulated microbial activity during acetate amendment in an aquifer near Rifle, Colorado. During electrical induced polarization (IP) measurements, spatiotemporal variations in the phase response between imposed electric current and the resultant electric field correlated with changes in groundwater geochemistry accompanying stimulated iron and sulfate reduction and sulfide mineral precipitation. The magnitude of the phase response varied with measurement frequency (0.125 and 1 Hz) and was dependent upon the dominant metabolic process. The spectral effect was corroborated using a biostimulated column experiment containing Rifle sediments and groundwater. Fluids and sediments recovered from regions exhibiting an anomalous phase response were enriched in Fe(II), dissolved sulfide, and cell-associated FeS nanoparticles. The accumulation of mineral precipitates and electroactive ions altered the ability of pore fluids to conduct electrical charge, accounting for the anomalous IP response and revealing the usefulness of multifrequency IP measurements for monitoring mineralogical and geochemical changes accompanying stimulated subsurface bioremediation.
C1 [Williams, Kenneth H.; Hubbard, Susan S.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Kemna, Andreas] Univ Bonn, Dept Geodynam & Geophys, D-53115 Bonn, Germany.
[Wilkins, Michael J.; Banfield, Jillian F.] Univ Calif Berkeley, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA.
[Druhan, Jennifer; Banfield, Jillian F.] Univ Calif Berkeley, Dept Earth & Planetary Sci, Berkeley, CA 94720 USA.
[Arntzen, Evan; N'Guessan, A. Lucie; Long, Philip E.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Williams, KH (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
EM khwilliams@lbl.gov
RI Druhan, Jennifer/G-2584-2011; Wilkins, Michael/A-9358-2013; Long,
Philip/F-5728-2013; Williams, Kenneth/O-5181-2014; Hubbard,
Susan/E-9508-2010
OI Long, Philip/0000-0003-4152-5682; Williams, Kenneth/0000-0002-3568-1155;
FU Environmental Remediation Science Program; Office of Biological and
Environmental Research (OBER); U.S. Department of Energy (DOE
[DE-AC02-05CHI1231]
FX Funding for this study was provided by the Environmental Remediation
Science Program, Office of Biological and Environmental Research (OBER),
U.S. Department of Energy (DOE; Grant DE-AC02-05CHI1231). Electron
microscopy was carried out at the Environmental Molecular Sciences
Laboratory, a national scientific user facility sponsored by DOE OBER
and located at Pacific Northwest National Laboratory (PNNL). We thank
Bruce Arey and Alice Dohnalkova for their assistance in preparing and
analyzing the SEM and TEM samples.
NR 38
TC 73
Z9 74
U1 2
U2 39
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0013-936X
EI 1520-5851
J9 ENVIRON SCI TECHNOL
JI Environ. Sci. Technol.
PD SEP 1
PY 2009
VL 43
IS 17
BP 6717
EP 6723
DI 10.1021/es900855j
PG 7
WC Engineering, Environmental; Environmental Sciences
SC Engineering; Environmental Sciences & Ecology
GA 487GB
UT WOS:000269258000047
PM 19764240
ER
PT J
AU Donath, JG
Steglich, F
Bauer, ED
Ronning, F
Sarrao, JL
Gegenwart, P
AF Donath, J. G.
Steglich, F.
Bauer, E. D.
Ronning, F.
Sarrao, J. L.
Gegenwart, P.
TI Quantum criticality in layered CeRhIn5-xSnx compared with cubic
CeIn3-xSnx
SO EPL
LA English
DT Article
ID FERMI-LIQUID BEHAVIOR; CRITICAL-POINT; SUPERCONDUCTIVITY;
ANTIFERROMAGNETISM; CECU6-XAUX; ELECTRONS; CERH2SI2; METALS
AB We report low-temperature thermal-expansion measurements on single crystals of the layered heavy fermion system CeRhIn5-xSnx (0.3 <= x <= 0.6) and compare it with a previous study on the related cubic system CeIn3-xSnx (Kuchler R. et al., Phys. Rev. Lett., 96 ( 2006) 256403). Both systems display a quantum critical point as proven by a divergent Gruneisen ratio. Most remarkably, the three-dimensional itinerant model explains quantum criticality in both systems, suggesting that the crystalline anisotropy in CeRhIn5-xSnx is unimportant. This is ascribed to the effect of weak disorder in these doped systems. Copyright (C) EPLA, 2009
C1 [Donath, J. G.; Steglich, F.] Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany.
[Bauer, E. D.; Ronning, F.; Sarrao, J. L.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Gegenwart, P.] Univ Gottingen, Inst Phys 1, D-37077 Gottingen, Germany.
RP Donath, JG (reprint author), Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany.
EM pgegenw@gwdg.de
RI Bauer, Eric/D-7212-2011; Gegenwart, Philipp/A-7291-2017;
OI Ronning, Filip/0000-0002-2679-7957; Bauer, Eric/0000-0003-0017-1937
FU DFG [960]
FX Work at Dresden and Gottingen was partially financed by the DFG Research
unit 960 ( Quantum phase transitions), while work at Los Alamos was
carried out under the auspices of the U. S. DOE.
NR 39
TC 6
Z9 6
U1 1
U2 9
PU EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
PI MULHOUSE
PA 6 RUE DES FRERES LUMIERE, MULHOUSE, 68200, FRANCE
SN 0295-5075
J9 EPL-EUROPHYS LETT
JI EPL
PD SEP
PY 2009
VL 87
IS 5
AR 57011
DI 10.1209/0295-5075/87/57011
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 498NB
UT WOS:000270146600030
ER
PT J
AU Glatz, A
Beloborodov, IS
AF Glatz, A.
Beloborodov, I. S.
TI Thermoelectric performance of weakly coupled granular materials
SO EPL
LA English
DT Article
ID DISORDERED SEMICONDUCTORS; SYSTEMS; DEVICES; POWER
AB We study thermoelectric properties of inhomogeneous nanogranular materials for weak tunneling conductance between the grains, g(t) < 1. We calculate the thermopower and figure of merit taking into account the shift of the chemical potential and the asymmetry of the density of states in the vicinity of the Fermi surface. We show that the weak coupling between the grains leads to a high thermopower and low thermal conductivity resulting in relatively high values of the figure of merit on the order of one. We estimate the temperature at which the figure of merit has its maximum value for two- and three-dimensional samples. Our results are applicable for many emerging materials, including artificially self-assembled nanoparticle arrays. Copyright (C) EPLA, 2009
C1 [Glatz, A.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Beloborodov, I. S.] Calif State Univ Northridge, Dept Phys & Astron, Northridge, CA 91330 USA.
RP Glatz, A (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
FU U. S. Department of Energy Office of Science [DE-AC02-06CH11357]
FX AG was supported by the U. S. Department of Energy Office of Science
under the Contract No. DE-AC02-06CH11357.
NR 20
TC 5
Z9 5
U1 1
U2 8
PU EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
PI MULHOUSE
PA 6 RUE DES FRERES LUMIERE, MULHOUSE, 68200, FRANCE
SN 0295-5075
J9 EPL-EUROPHYS LETT
JI EPL
PD SEP
PY 2009
VL 87
IS 5
AR 57009
DI 10.1209/0295-5075/87/57009
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 498NB
UT WOS:000270146600028
ER
PT J
AU Drexler, JZ
de Fontaine, CS
Brown, TA
AF Drexler, Judith Z.
de Fontaine, Christian S.
Brown, Thomas A.
TI Peat Accretion Histories During the Past 6,000 Years in Marshes of the
Sacramento-San Joaquin Delta, CA, USA
SO ESTUARIES AND COASTS
LA English
DT Article
DE Autocompaction; Radiocarbon age determination; Sea level rise; Soil
volume; Tidal freshwater marsh; Vertical accretion
ID SEA-LEVEL RISE; FRANCISCO BAY ESTUARY; FRESH-WATER MARSH; TIDAL MARSH;
MISSISSIPPI DELTA; ENVIRONMENTAL-CHANGE; SEDIMENTATION-RATES; VERTICAL
ACCRETION; AGE CALIBRATION; YANGTZE-RIVER
AB The purpose of this study was to determine how vertical accretion rates in marshes vary through the millennia. Peat cores were collected in remnant and drained marshes in the Sacramento-San Joaquin Delta of California. Cubic smooth spline regression models were used to construct age-depth models and accretion histories for three remnant marshes. Estimated vertical accretion rates at these sites range from 0.03 to 0.49 cm year(-1). The mean contribution of organic matter to soil volume at the remnant marsh sites is generally stable (4.73% to 6.94%), whereas the mean contribution of inorganic matter to soil volume has greater temporal variability (1.40% to 7.92%). The hydrogeomorphic position of each marsh largely determines the inorganic content of peat. Currently, the remnant marshes are keeping pace with sea level rise, but this balance may shift for at least one of the sites under future sea level rise scenarios.
C1 [Drexler, Judith Z.; de Fontaine, Christian S.] US Geol Survey, Calif Water Sci Ctr, Sacramento, CA 95819 USA.
[Brown, Thomas A.] Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94551 USA.
RP Drexler, JZ (reprint author), US Geol Survey, Calif Water Sci Ctr, 6000 J St,Placer Hall, Sacramento, CA 95819 USA.
EM jdrexler@usgs.gov; tabrown@llnl.gov
FU CALFED Science Program of the State of California Resources Agency
[F-O3-RE-029]; US Department of Energy [DE-AC52-07NA27344]
FX This study was funded by the CALFED Science Program of the State of
California Resources Agency, Agreement #F-O3-RE-029. This work was
performed, in part, under the auspices of the US Department of Energy by
Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344.
We thank Jim Orlando, Jacob Fleck, Matt Kerlin, Curt Battenfeld,
Stephanie Wong, Patricia Orlando, and Nicole Lunning for their help in
the field and/or lab. Greg Pasternack of the University of California,
Davis generously provided laboratory facilities for much of the
analyses. Michelle Sneed, Gerald Bawden, and Marti Ikehara provided
critical guidance with the elevation survey. We are grateful to S. Galen
Smith, Professor Emeritus, University of Wisconsin-Whitewater, for
offering his help and expertise in achene identification. We also thank
Anna Frampton for Polish translation and Neil Willits (Department of
Statistics, UC Davis) for statistical guidance. Finally, we are thankful
for the excellent reviews by Don Cahoon, Brian Atwater, and two
anonymous reviewers.
NR 86
TC 24
Z9 24
U1 2
U2 21
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1559-2723
EI 1559-2731
J9 ESTUAR COAST
JI Estuaries Coasts
PD SEP
PY 2009
VL 32
IS 5
BP 871
EP 892
DI 10.1007/s12237-009-9202-8
PG 22
WC Environmental Sciences; Marine & Freshwater Biology
SC Environmental Sciences & Ecology; Marine & Freshwater Biology
GA 482PP
UT WOS:000268901500004
ER
PT J
AU Wu, SJ
Ling, J
Wang, SA
Skanthakumar, S
Soderholm, L
Albrecht-Schmitt, TE
Alekseev, EV
Krivovichev, SV
Depmeier, W
AF Wu, Shijun
Ling, Jie
Wang, Shuao
Skanthakumar, S.
Soderholm, L.
Albrecht-Schmitt, Thomas E.
Alekseev, Evgeny V.
Krivovichev, Sergey V.
Depmeier, Wulf
TI Uranium(VI) Adopts a Tetraoxido Core
SO EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
LA English
DT Article
DE Actinides; Uranium; Oxido ligands; Hydrothermal synthesis; Solid-state
reactions; Layered structure; Framework structure; Structure elucidation
ID CIS-DIOXIDO URANYL; ALKALINE-SOLUTION; NEPTUNIUM; NP(VII); OXIDES
AB The hydrothermal reaction of uranyl acetate with cadium acetate, or the high-temperature solid state reaction of arsenic(V) oxide, barium nitrate, and uranyl nitrate results in the formation of Cd(2)(H(2)O)(2)[U(OH)(CH(3)COO)(UO(2))(5)(OH)(2)O(8)]center dot 0.5H(2)O (1) or Ba(4)[(UO(2))(7)(UO(4))(AsO(4))(2)O(7)] (2), respectively. Both of these compounds contain uranium sites whose bonding metrics are consistent with the coordination environments found for Np(VII) and Pu(VII) not U(VI). (C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
C1 [Ling, Jie; Wang, Shuao; Albrecht-Schmitt, Thomas E.] Univ Notre Dame, Dept Civil Engn & Geol Sci, Notre Dame, IN 46556 USA.
[Ling, Jie; Wang, Shuao; Albrecht-Schmitt, Thomas E.] Univ Notre Dame, Dept Chem & Biochem, Notre Dame, IN 46556 USA.
[Wu, Shijun] Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China.
[Skanthakumar, S.; Soderholm, L.] Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA.
[Alekseev, Evgeny V.; Depmeier, Wulf] Univ Kiel, Dept Crystallog, D-24118 Kiel, Germany.
[Krivovichev, Sergey V.] St Petersburg State Univ, Dept Crystallog, St Petersburg 199034, Russia.
RP Albrecht-Schmitt, TE (reprint author), Univ Notre Dame, Dept Civil Engn & Geol Sci, Notre Dame, IN 46556 USA.
EM talbrec1@nd.edu; e_v_alekseev@mail.ru
RI Ling, Jie/A-4136-2011; Wu, Shijun/B-1016-2010; Wang, Shuao/H-7373-2012;
Krivovichev, Sergey/I-6618-2012;
OI Wu, Shijun/0000-0003-0343-3322; Krivovichev, Sergey/0000-0001-8352-1394;
Alekseev, Evgeny/0000-0002-4919-5211
FU U.S. Department of Energy, Office of Basic Energy Sciences, Heavy
Elements Program [DE-FG02-01ER15187]; Deutsche Forschungsemeinschaft
(DFG) [De412/30-2]
FX This work was supported by the U.S. Department of Energy, Office of
Basic Energy Sciences, Heavy Elements Program under grant
DE-FG02-01ER15187 and Deutsche Forschungsemeinschaft (DFG) by research
grant De412/30-2.
NR 22
TC 14
Z9 14
U1 1
U2 18
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY
SN 1434-1948
J9 EUR J INORG CHEM
JI Eur. J. Inorg. Chem.
PD SEP
PY 2009
IS 27
BP 4039
EP 4042
DI 10.1002/ejic.200900658
PG 4
WC Chemistry, Inorganic & Nuclear
SC Chemistry
GA 502GY
UT WOS:000270446000002
ER
PT J
AU Chekanov, S
Derrick, M
Magill, S
Musgrave, B
Nicholass, D
Repond, J
Yoshida, R
Mattingly, MCK
Antonioli, P
Bari, G
Bellagamba, L
Boscherini, D
Bruni, A
Bruni, G
Cindolo, F
Corradi, M
Iacobucci, G
Margotti, A
Nania, R
Polini, A
Antonelli, S
Basile, M
Bindi, M
Cifarelli, L
Contin, A
De Pasquale, S
Sartorelli, G
Zichichi, A
Bartsch, D
Brock, I
Hartmann, H
Hilger, E
Jakob, HP
Jungst, M
Nuncio-Quiroz, AE
Paul, E
Samson, U
Schonberg, V
Shehzadi, R
Wlasenko, M
Brook, NH
Heath, GP
Morris, JD
Kaur, M
Kaur, P
Singh, I
Capua, M
Fazio, S
Mastroberardino, A
Schioppa, M
Susinno, G
Tassi, E
Kim, JY
Ibrahim, ZA
Idris, F
Kamaluddin, B
Abdullah, WATW
Ning, Y
Ren, Z
Sciulli, F
Chwastowski, J
Eskreys, A
Figiel, J
Galas, A
Olkiewicz, K
Pawlik, B
Stopa, P
Zawiejski, L
Adamczyk, L
Bold, T
Grabowska-Bold, I
Kisielewska, D
Lukasik, J
Przybycie, M
Suszycki, L
Kotanski, A
Slominski, W
Behnke, O
Behrens, U
Blohm, C
Bonato, A
Borras, K
Bot, D
Ciesielski, R
Coppola, N
Fang, S
Fourletova, J
Geiser, A
Gottlicher, P
Grebenyuk, J
Gregor, I
Haas, T
Hain, W
Huttmann, A
Januschek, F
Kahle, B
Katkov, II
Klein, U
Kotz, U
Kowalski, H
Lisovyi, M
Lobodzinska, E
Lohr, B
Mankel, R
Melzer-Pellmann, IA
Miglioranzi, S
Montanari, A
Namsoo, T
Notz, D
Parenti, A
Rinaldi, L
Roloff, P
Rubinsky, I
Schneekloth, U
Spiridonov, A
Szuba, D
Szuba, J
Theedt, T
Ukleja, J
Wolf, G
Wrona, K
Molina, AGY
Youngman, C
Zeuner, W
Drugakov, V
Lohmann, W
Schlenstedt, S
Barbagli, G
Gallo, E
Pelfer, PG
Bamberger, A
Dobur, D
Karstens, F
Vlasov, NN
Bussey, PJ
Doyle, AT
Dunne, W
Forrest, M
Rosin, M
Saxon, DH
Skillicorn, IO
Gialas, I
Papageorgiu, K
Holm, U
Klanner, R
Lohrmann, E
Perrey, H
Schleper, P
Schorner-Sadenius, T
Sztuk, J
Stadie, H
Turcato, M
Foudas, C
Fry, C
Long, KR
Tapper, AD
Matsumoto, T
Nagano, K
Tokushuku, K
Yamada, S
Yamazaki, Y
Barakbaev, AN
Boos, EG
Pokrovskiy, NS
Zhautykov, BO
Aushev, V
Bachynska, O
Borodin, M
Kadenko, I
Kozulia, A
Libov, V
Lontkovskyi, D
Makarenko, I
Sorokin, I
Verbytskyi, A
Volynets, O
Son, D
de Favereau, J
Piotrzkowski, K
Barreiro, F
Glasman, C
Jimenez, M
Labarga, L
del Peso, J
Ron, E
Soares, M
Terron, J
Uribe-Estrada, C
Zambrana, M
Corriveau, F
Liu, C
Schwartz, J
Walsh, R
Zhou, C
Tsurugai, T
Antonov, A
Dolgoshein, BA
Gladkov, D
Sosnovtsev, V
Stifutkin, A
Suchkov, S
Dementiev, RK
Ermolov, PF
Gladilin, LK
Golubkov, YA
Khein, LA
Korzhavina, IA
Kuzmin, VA
Levchenko, BB
Lukina, OY
Proskuryakov, AS
Shcheglova, LM
Zotkin, DS
Abt, I
Caldwell, A
Kollar, D
Reisert, B
Schmidke, WB
Grigorescu, G
Keramidas, A
Koffeman, E
Kooijman, P
Pellegrino, A
Tiecke, H
Vazquez, M
Wiggers, L
Brummer, N
Bylsma, B
Durkin, LS
Lee, A
Ling, TY
Allfrey, PD
Bell, MA
Cooper-Sarkar, AM
Devenish, RCE
Ferrando, J
Foster, B
Gwenlan, C
Horton, K
Oliver, K
Robertson, A
Walczak, R
Bertolin, A
Dal Corso, F
Dusini, S
Longhin, A
Stanco, L
Bellan, P
Brugnera, R
Carlin, R
Garfagnini, A
Limentani, S
Oh, BY
Raval, A
Whitmore, JJ
Iga, Y
D'Agostini, G
Marini, G
Nigro, A
Cole, JE
Hart, JC
Abramowicz, H
Ingbir, R
Kananov, S
Levy, A
Stern, A
Kuze, M
Maeda, J
Hori, R
Kagawa, S
Okazaki, N
Shimizu, S
Tawara, T
Hamatsu, R
Kaji, H
Kitamura, S
Ota, O
Ri, YD
Costa, M
Ferrero, MI
Monaco, V
Sacchi, R
Sola, V
Solano, A
Arneodo, M
Ruspa, M
Fourletov, S
Martin, JF
Stewart, TP
Boutle, SK
Butterworth, JM
Hall-Wilton, R
Jones, TW
Loizides, JH
Sutton, MR
Wing, M
Brzozowska, B
Ciborowski, J
Grzelak, G
Kulinski, P
Luzniak, P
Malka, J
Nowak, RJ
Pawlak, JM
Perlanski, W
Tymieniecka, T
Zarnecki, AF
Adamus, M
Plucinski, P
Ukleja, A
Eisenberg, Y
Hochman, D
Karshon, U
Brownson, E
Reeder, DD
Savin, AA
Smith, WH
Wolfe, H
Bhadra, S
Catterall, CD
Cui, Y
Hartner, G
Menary, S
Noor, U
Standage, J
Whyte, J
AF Chekanov, S.
Derrick, M.
Magill, S.
Musgrave, B.
Nicholass, D.
Repond, J.
Yoshida, R.
Mattingly, M. C. K.
Antonioli, P.
Bari, G.
Bellagamba, L.
Boscherini, D.
Bruni, A.
Bruni, G.
Cindolo, F.
Corradi, M.
Iacobucci, G.
Margotti, A.
Nania, R.
Polini, A.
Antonelli, S.
Basile, M.
Bindi, M.
Cifarelli, L.
Contin, A.
De Pasquale, S.
Sartorelli, G.
Zichichi, A.
Bartsch, D.
Brock, I.
Hartmann, H.
Hilger, E.
Jakob, H. -P.
Juengst, M.
Nuncio-Quiroz, A. E.
Paul, E.
Samson, U.
Schoenberg, V.
Shehzadi, R.
Wlasenko, M.
Brook, N. H.
Heath, G. P.
Morris, J. D.
Kaur, M.
Kaur, P.
Singh, I.
Capua, M.
Fazio, S.
Mastroberardino, A.
Schioppa, M.
Susinno, G.
Tassi, E.
Kim, J. Y.
Ibrahim, Z. A.
Idris, F. Mohamad
Kamaluddin, B.
Abdullah, W. A. T. Wan
Ning, Y.
Ren, Z.
Sciulli, F.
Chwastowski, J.
Eskreys, A.
Figiel, J.
Galas, A.
Olkiewicz, K.
Pawlik, B.
Stopa, P.
Zawiejski, L.
Adamczyk, L.
Bold, T.
Grabowska-Bold, I.
Kisielewska, D.
Lukasik, J.
Przybycien, M.
Suszycki, L.
Kotanski, A.
Slominski, W.
Behnke, O.
Behrens, U.
Blohm, C.
Bonato, A.
Borras, K.
Bot, D.
Ciesielski, R.
Coppola, N.
Fang, S.
Fourletova, J.
Geiser, A.
Goettlicher, P.
Grebenyuk, J.
Gregor, I.
Haas, T.
Hain, W.
Huettmann, A.
Januschek, F.
Kahle, B.
Katkov, I. I.
Klein, U.
Koetz, U.
Kowalski, H.
Lisovyi, M.
Lobodzinska, E.
Loehr, B.
Mankel, R.
Melzer-Pellmann, I. -A.
Miglioranzi, S.
Montanari, A.
Namsoo, T.
Notz, D.
Parenti, A.
Rinaldi, L.
Roloff, P.
Rubinsky, I.
Schneekloth, U.
Spiridonov, A.
Szuba, D.
Szuba, J.
Theedt, T.
Ukleja, J.
Wolf, G.
Wrona, K.
Molina, A. G. Yaguees
Youngman, C.
Zeuner, W.
Drugakov, V.
Lohmann, W.
Schlenstedt, S.
Barbagli, G.
Gallo, E.
Pelfer, P. G.
Bamberger, A.
Dobur, D.
Karstens, F.
Vlasov, N. N.
Bussey, P. J.
Doyle, A. T.
Dunne, W.
Forrest, M.
Rosin, M.
Saxon, D. H.
Skillicorn, I. O.
Gialas, I.
Papageorgiu, K.
Holm, U.
Klanner, R.
Lohrmann, E.
Perrey, H.
Schleper, P.
Schoerner-Sadenius, T.
Sztuk, J.
Stadie, H.
Turcato, M.
Foudas, C.
Fry, C.
Long, K. R.
Tapper, A. D.
Matsumoto, T.
Nagano, K.
Tokushuku, K.
Yamada, S.
Yamazaki, Y.
Barakbaev, A. N.
Boos, E. G.
Pokrovskiy, N. S.
Zhautykov, B. O.
Aushev, V.
Bachynska, O.
Borodin, M.
Kadenko, I.
Kozulia, A.
Libov, V.
Lontkovskyi, D.
Makarenko, I.
Sorokin, Iu
Verbytskyi, A.
Volynets, O.
Son, D.
de Favereau, J.
Piotrzkowski, K.
Barreiro, F.
Glasman, C.
Jimenez, M.
Labarga, L.
del Peso, J.
Ron, E.
Soares, M.
Terron, J.
Uribe-Estrada, C.
Zambrana, M.
Corriveau, F.
Liu, C.
Schwartz, J.
Walsh, R.
Zhou, C.
Tsurugai, T.
Antonov, A.
Dolgoshein, B. A.
Gladkov, D.
Sosnovtsev, V.
Stifutkin, A.
Suchkov, S.
Dementiev, R. K.
Ermolov, P. F.
Gladilin, L. K.
Golubkov, Yu A.
Khein, L. A.
Korzhavina, I. A.
Kuzmin, V. A.
Levchenko, B. B.
Lukina, O. Yu
Proskuryakov, A. S.
Shcheglova, L. M.
Zotkin, D. S.
Abt, I.
Caldwell, A.
Kollar, D.
Reisert, B.
Schmidke, W. B.
Grigorescu, G.
Keramidas, A.
Koffeman, E.
Kooijman, P.
Pellegrino, A.
Tiecke, H.
Vazquez, M.
Wiggers, L.
Bruemmer, N.
Bylsma, B.
Durkin, L. S.
Lee, A.
Ling, T. Y.
Allfrey, P. D.
Bell, M. A.
Cooper-Sarkar, A. M.
Devenish, R. C. E.
Ferrando, J.
Foster, B.
Gwenlan, C.
Horton, K.
Oliver, K.
Robertson, A.
Walczak, R.
Bertolin, A.
Dal Corso, F.
Dusini, S.
Longhin, A.
Stanco, L.
Bellan, P.
Brugnera, R.
Carlin, R.
Garfagnini, A.
Limentani, S.
Oh, B. Y.
Raval, A.
Whitmore, J. J.
Iga, Y.
D'Agostini, G.
Marini, G.
Nigro, A.
Cole, J. E.
Hart, J. C.
Abramowicz, H.
Ingbir, R.
Kananov, S.
Levy, A.
Stern, A.
Kuze, M.
Maeda, J.
Hori, R.
Kagawa, S.
Okazaki, N.
Shimizu, S.
Tawara, T.
Hamatsu, R.
Kaji, H.
Kitamura, S.
Ota, O.
Ri, Y. D.
Costa, M.
Ferrero, M. I.
Monaco, V.
Sacchi, R.
Sola, V.
Solano, A.
Arneodo, M.
Ruspa, M.
Fourletov, S.
Martin, J. F.
Stewart, T. P.
Boutle, S. K.
Butterworth, J. M.
Hall-Wilton, R.
Jones, T. W.
Loizides, J. H.
Sutton, M. R.
Wing, M.
Brzozowska, B.
Ciborowski, J.
Grzelak, G.
Kulinski, P.
Luzniak, P.
Malka, J.
Nowak, R. J.
Pawlak, J. M.
Perlanski, W.
Tymieniecka, T.
Zarnecki, A. F.
Adamus, M.
Plucinski, P.
Ukleja, A.
Eisenberg, Y.
Hochman, D.
Karshon, U.
Brownson, E.
Reeder, D. D.
Savin, A. A.
Smith, W. H.
Wolfe, H.
Bhadra, S.
Catterall, C. D.
Cui, Y.
Hartner, G.
Menary, S.
Noor, U.
Standage, J.
Whyte, J.
CA ZEUS Collaboration
TI Measurement of D-+/- and D-0 production in deep inelastic scattering
using a lifetime tag at HERA
SO EUROPEAN PHYSICAL JOURNAL C
LA English
DT Article
ID CENTRAL TRACKING DETECTOR; ZEUS BARREL CALORIMETER; O(ALPHA-S)
CORRECTIONS; PERTURBATION-THEORY; VERTEX DETECTOR; CROSS-SECTIONS;
DESIGN; ELECTROPRODUCTION; QUARK; DISTRIBUTIONS
AB The production of D-+/-- and D-0-mesons has been measured with the ZEUS detector at HERA using an integrated luminosity of 133.6 pb(-1). The measurements cover the kinematic range 5 < Q(2) < 1000 GeV2, 0.02 < y < 0.7, 1.5 < p(T)(D) < 15 GeV and |eta(D)| < 1.6. Combinatorial background to the D-meson signals is reduced by using the ZEUS microvertex detector to reconstruct displaced secondary vertices. Production cross sections are compared with the predictions of next-to-leading-order QCD, which is found to describe the data well. Measurements are extrapolated to the full kinematic phase space in order to obtain the open-charm contribution, F-2(c (c) over bar), to the proton structure function, F-2.
C1 [Chekanov, S.; Derrick, M.; Magill, S.; Musgrave, B.; Nicholass, D.; Repond, J.; Yoshida, R.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Mattingly, M. C. K.; Foudas, C.; Fry, C.; Long, K. R.; Tapper, A. D.] Andrews Univ, Berrien Springs, MI 49104 USA.
[Antonioli, P.; Bari, G.; Bellagamba, L.; Boscherini, D.; Bruni, A.; Bruni, G.; Cindolo, F.; Corradi, M.; Iacobucci, G.; Margotti, A.; Nania, R.; Polini, A.; Antonelli, S.; Basile, M.; Bindi, M.; Cifarelli, L.; Contin, A.; De Pasquale, S.; Sartorelli, G.; Zichichi, A.; Allfrey, P. D.; Bell, M. A.; Cooper-Sarkar, A. M.; Devenish, R. C. E.; Ferrando, J.; Foster, B.; Gwenlan, C.; Horton, K.; Oliver, K.; Robertson, A.; Walczak, R.] Ist Nazl Fis Nucl, I-40126 Bologna, Italy.
[Antonelli, S.; Basile, M.; Bindi, M.; Cifarelli, L.; Contin, A.; De Pasquale, S.; Sartorelli, G.; Zichichi, A.; Cole, J. E.; Hart, J. C.] Univ Bologna, Bologna, Italy.
[Bartsch, D.; Brock, I.; Hartmann, H.; Hilger, E.; Jakob, H. -P.; Juengst, M.; Nuncio-Quiroz, A. E.; Paul, E.; Samson, U.; Schoenberg, V.; Shehzadi, R.; Wlasenko, M.; Boutle, S. K.; Butterworth, J. M.; Hall-Wilton, R.; Jones, T. W.; Loizides, J. H.; Sutton, M. R.; Wing, M.] Univ Bonn, Inst Phys, D-5300 Bonn, Germany.
[Kaur, M.; Kaur, P.; Singh, I.] Panjab Univ, Dept Phys, Chandigarh, India.
[Capua, M.; Fazio, S.; Mastroberardino, A.; Schioppa, M.; Susinno, G.; Tassi, E.] Univ Calabria, Dept Phys, I-87036 Cosenza, Italy.
[Kim, J. Y.] Chonnam Natl Univ, Kwangju, South Korea.
[Ibrahim, Z. A.; Idris, F. Mohamad; Kamaluddin, B.; Abdullah, W. A. T. Wan] Univ Malaya, Jabatan Fiz, Kuala Lumpur 50603, Malaysia.
[Ning, Y.; Ren, Z.; Sciulli, F.] Columbia Univ, Nevis Labs, Irvington, NY 10027 USA.
[Chwastowski, J.; Eskreys, A.; Figiel, J.; Galas, A.; Olkiewicz, K.; Pawlik, B.; Stopa, P.; Zawiejski, L.] Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, Krakow, Poland.
[Adamczyk, L.; Bold, T.; Grabowska-Bold, I.; Kisielewska, D.; Lukasik, J.; Przybycien, M.; Suszycki, L.] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, Krakow, Poland.
[Kotanski, A.; Slominski, W.] Jagiellonian Univ, Dept Phys, Krakow, Poland.
[Behnke, O.; Behrens, U.; Blohm, C.; Bonato, A.; Borras, K.; Bot, D.; Ciesielski, R.; Coppola, N.; Fang, S.; Fourletova, J.; Geiser, A.; Goettlicher, P.; Grebenyuk, J.; Gregor, I.; Haas, T.; Hain, W.; Huettmann, A.; Januschek, F.; Kahle, B.; Katkov, I. I.; Klein, U.; Koetz, U.; Kowalski, H.; Lisovyi, M.; Lobodzinska, E.; Loehr, B.; Mankel, R.; Melzer-Pellmann, I. -A.; Miglioranzi, S.; Montanari, A.; Namsoo, T.; Notz, D.; Parenti, A.; Rinaldi, L.; Roloff, P.; Rubinsky, I.; Schneekloth, U.; Spiridonov, A.; Szuba, D.; Szuba, J.; Theedt, T.; Ukleja, J.; Wolf, G.; Wrona, K.; Molina, A. G. Yaguees; Youngman, C.; Zeuner, W.] Deutsch Elektronen Synchrotron DESY, Hamburg, Germany.
[Drugakov, V.; Lohmann, W.; Schlenstedt, S.] Deutsch Elektronen Synchrotron DESY, Zeuthen, Germany.
[Barbagli, G.; Gallo, E.; Pelfer, P. G.] Ist Nazl Fis Nucl, I-50125 Florence, Italy.
[Pelfer, P. G.] Univ Florence, Florence, Italy.
[Bamberger, A.; Dobur, D.; Karstens, F.; Vlasov, N. N.] Univ Freiburg, Fak Phys, D-7800 Freiburg, Germany.
[Bussey, P. J.; Doyle, A. T.; Dunne, W.; Forrest, M.; Rosin, M.; Saxon, D. H.; Skillicorn, I. O.] Univ Glasgow, Dept Phys & Astron, Glasgow, Lanark, Scotland.
[Gialas, I.; Papageorgiu, K.] Univ Aegean, Dept Engn Management & Finance, Mitilini, Greece.
[Holm, U.; Klanner, R.; Lohrmann, E.; Perrey, H.; Schleper, P.; Schoerner-Sadenius, T.; Sztuk, J.; Stadie, H.; Turcato, M.; Wing, M.] Univ Hamburg, Inst Exp Phys, Hamburg, Germany.
[Matsumoto, T.; Nagano, K.; Tokushuku, K.; Yamada, S.; Yamazaki, Y.] Natl Lab High Energy Phys, KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki 305, Japan.
[Barakbaev, A. N.; Boos, E. G.; Pokrovskiy, N. S.; Zhautykov, B. O.] Minist Educ & Sci Kazakhstan, Inst Phys & Technol, Alma Ata, Kazakhstan.
[Aushev, V.; Bachynska, O.; Borodin, M.; Kadenko, I.; Kozulia, A.; Libov, V.; Lontkovskyi, D.; Makarenko, I.; Sorokin, Iu; Verbytskyi, A.; Volynets, O.] Kiev & Kiev Natl Univ, Natl Acad Sci, Inst Nucl Res, Kiev, Ukraine.
[Son, D.] Kyungpook Natl Univ, Ctr High Energy Phys, Taegu, South Korea.
[de Favereau, J.; Piotrzkowski, K.] Catholic Univ Louvain, Inst Phys Nucl, B-1348 Louvain, Belgium.
[Barreiro, F.; Glasman, C.; Jimenez, M.; Labarga, L.; del Peso, J.; Ron, E.; Soares, M.; Terron, J.; Uribe-Estrada, C.; Zambrana, M.] Univ Autonoma Madrid, Dept Fis Teor, Madrid, Spain.
[Corriveau, F.; Liu, C.; Schwartz, J.; Walsh, R.; Zhou, C.] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada.
[Tsurugai, T.] Meiji Gakuin Univ, Fac Gen Educ, Yokohama, Kanagawa, Japan.
[Antonov, A.; Dolgoshein, B. A.; Gladkov, D.; Sosnovtsev, V.; Stifutkin, A.; Suchkov, S.] Moscow Engn Phys Inst, Moscow 115409, Russia.
[Dementiev, R. K.; Ermolov, P. F.; Gladilin, L. K.; Golubkov, Yu A.; Khein, L. A.; Korzhavina, I. A.; Kuzmin, V. A.; Levchenko, B. B.; Lukina, O. Yu; Proskuryakov, A. S.; Shcheglova, L. M.; Zotkin, D. S.] Moscow MV Lomonosov State Univ, Inst Nucl Phys, Moscow, Russia.
[Abt, I.; Caldwell, A.; Kollar, D.; Reisert, B.; Schmidke, W. B.] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany.
[Grigorescu, G.; Keramidas, A.; Koffeman, E.; Kooijman, P.; Pellegrino, A.; Tiecke, H.; Vazquez, M.; Wiggers, L.] Univ Amsterdam, Amsterdam, Netherlands.
[Bruemmer, N.; Bylsma, B.; Durkin, L. S.; Lee, A.; Ling, T. Y.] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA.
[Bertolin, A.; Dal Corso, F.; Dusini, S.; Longhin, A.; Stanco, L.; Bellan, P.; Brugnera, R.; Carlin, R.; Garfagnini, A.; Limentani, S.] Ist Nazl Fis Nucl, Padua, Italy.
[Bellan, P.; Brugnera, R.; Carlin, R.; Garfagnini, A.; Limentani, S.] Univ Padua, Dipartimento Fis, Padua, Italy.
[Oh, B. Y.; Raval, A.; Whitmore, J. J.] Penn State Univ, Dept Phys, University Pk, PA 16802 USA.
[Iga, Y.] Polytech Univ, Sagamihara, Kanagawa, Japan.
[D'Agostini, G.; Marini, G.; Nigro, A.] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy.
[Abramowicz, H.; Ingbir, R.; Kananov, S.; Levy, A.; Stern, A.] Tel Aviv Univ, Raymond & Beverly Sackler Fac Exact Sci, Sch Phys, IL-69978 Tel Aviv, Israel.
[Kuze, M.; Maeda, J.] Tokyo Inst Technol, Dept Phys, Tokyo 152, Japan.
[Hori, R.; Kagawa, S.; Okazaki, N.; Shimizu, S.; Tawara, T.] Univ Tokyo, Dept Phys, Tokyo 113, Japan.
[Hamatsu, R.; Kaji, H.; Kitamura, S.; Ota, O.; Ri, Y. D.] Tokyo Metropolitan Univ, Dept Phys, Tokyo, Japan.
[Costa, M.; Ferrero, M. I.; Monaco, V.; Sacchi, R.; Sola, V.; Solano, A.] Univ Turin, Turin, Italy.
[Arneodo, M.; Ruspa, M.] Univ Piemonte Orientale, Novara, Italy.
[Fourletov, S.; Martin, J. F.; Stewart, T. P.] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada.
[Brzozowska, B.; Ciborowski, J.; Grzelak, G.; Kulinski, P.; Luzniak, P.; Malka, J.; Nowak, R. J.; Pawlak, J. M.; Perlanski, W.; Tymieniecka, T.; Zarnecki, A. F.] Warsaw Univ, Inst Expt Phys, Warsaw, Poland.
[Adamus, M.; Plucinski, P.; Ukleja, A.] Inst Nucl Studies, PL-00681 Warsaw, Poland.
[Eisenberg, Y.; Hochman, D.; Karshon, U.] Weizmann Inst Sci, Dept Particle Phys, IL-76100 Rehovot, Israel.
[Brownson, E.; Reeder, D. D.; Savin, A. A.; Smith, W. H.; Wolfe, H.] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA.
[Bhadra, S.; Catterall, C. D.; Cui, Y.; Hartner, G.; Menary, S.; Noor, U.; Standage, J.; Whyte, J.] York Univ, Dept Phys, N York, ON M3J 1P3, Canada.
[Brook, N. H.; Heath, G. P.; Morris, J. D.] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England.
[Capua, M.; Fazio, S.; Mastroberardino, A.; Schioppa, M.; Susinno, G.; Tassi, E.] Univ Calabria, INFN, I-87036 Cosenza, Italy.
[Foudas, C.; Fry, C.; Long, K. R.; Tapper, A. D.] Univ London Imperial Coll Sci Technol & Med, High Energy Nucl Phys Grp, London, England.
[Grigorescu, G.; Keramidas, A.; Koffeman, E.; Kooijman, P.; Pellegrino, A.; Tiecke, H.; Vazquez, M.; Wiggers, L.] NIKHEF, Amsterdam, Netherlands.
[Allfrey, P. D.; Bell, M. A.; Cooper-Sarkar, A. M.; Devenish, R. C. E.; Ferrando, J.; Foster, B.; Gwenlan, C.; Horton, K.; Oliver, K.; Robertson, A.; Walczak, R.] Univ Oxford, Dept Phys, Oxford, England.
[D'Agostini, G.; Marini, G.; Nigro, A.] Ist Nazl Fis Nucl, Rome, Italy.
[Cole, J. E.; Hart, J. C.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
[Costa, M.; Ferrero, M. I.; Monaco, V.; Sacchi, R.; Sola, V.; Solano, A.; Arneodo, M.; Ruspa, M.] Ist Nazl Fis Nucl, I-10125 Turin, Italy.
[Boutle, S. K.; Butterworth, J. M.; Hall-Wilton, R.; Jones, T. W.; Loizides, J. H.; Sutton, M. R.; Wing, M.] UCL, Dept Phys & Astron, London, England.
[Kaur, P.; Singh, I.; Abramowicz, H.] Max Planck Inst, Munich, Germany.
[Spiridonov, A.] Inst Theoret & Expt Phys, Moscow 117259, Russia.
[Szuba, D.] INP, Krakow, Poland.
[Szuba, J.] AGH Univ Sci & Technol, FPACS, Krakow, Poland.
[Ciborowski, J.] Univ Lodz, PL-90131 Lodz, Poland.
[Tymieniecka, T.] Univ Podlasie, Siedlce, Poland.
RP Chekanov, S (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM tobias.haas@desy.de
RI Tassi, Enrico/K-3958-2015; Suchkov, Sergey/M-6671-2015; De Pasquale,
Salvatore/B-9165-2008; dusini, stefano/J-3686-2012; Capua,
Marcella/A-8549-2015; IBRAHIM, ZAINOL ABIDIN/C-1121-2010; Fazio,
Salvatore /G-5156-2010; WAN ABDULLAH, WAN AHMAD TAJUDDIN/B-5439-2010;
Doyle, Anthony/C-5889-2009; Ferrando, James/A-9192-2012; Gladilin,
Leonid/B-5226-2011; Levchenko, B./D-9752-2012; Proskuryakov,
Alexander/J-6166-2012; Dementiev, Roman/K-7201-2012; Korzhavina,
Irina/D-6848-2012; Wiggers, Leo/B-5218-2015
OI De Pasquale, Salvatore/0000-0001-9236-0748; dusini,
stefano/0000-0002-1128-0664; Capua, Marcella/0000-0002-2443-6525;
Arneodo, Michele/0000-0002-7790-7132; Longhin,
Andrea/0000-0001-9103-9936; Doyle, Anthony/0000-0001-6322-6195;
Ferrando, James/0000-0002-1007-7816; Gladilin,
Leonid/0000-0001-9422-8636; Wiggers, Leo/0000-0003-1060-0520
NR 56
TC 30
Z9 30
U1 0
U2 9
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1434-6044
EI 1434-6052
J9 EUR PHYS J C
JI Eur. Phys. J. C
PD SEP
PY 2009
VL 63
IS 2
BP 171
EP 188
DI 10.1140/epjc/s10052-009-1088-x
PG 18
WC Physics, Particles & Fields
SC Physics
GA 495BC
UT WOS:000269863200001
ER
PT J
AU Sen, A
Ghosh, P
Vittal, V
Yang, B
AF Sen, Arunabha
Ghosh, Pavel
Vittal, Vijay
Yang, Bo
TI A new min-cut problem with application to electric power network
partitioning
SO EUROPEAN TRANSACTIONS ON ELECTRICAL POWER
LA English
DT Article
DE electrical power network; islanding; graph partitioning; computational
complexity; integer linear programming; heuristic algorithm
AB The problem of partitioning a graph into two or more subgraphs that satisfies certain conditions is encountered in many different domains. Accordingly, graph partitioning problem has been studied extensively in the last 50 years. The most celebrated result among this class of problems is the max flow = min cut theorem due to Ford and Fulkerson. Utilizing the modifications suggested by Edmonds and Karp. it is well known that the minimum capacity cut in the directed graph with edge weights can be computed in polynomial time. If the partition divides the node set V into subsets V(1) and V(2), where V(1) contains one of the specified nodes s and V(2) contains the other specified node t, the capacity of a cut is defined as the sum of the edge weights going from V(1) to V(2). In electrical power distribution networks, a slow-coherency-based islanding strategy is used as a prevention against the cascading failures. In this paper, we concentrate on the graph partition problems which are encountered in electric power distribution networks. In this environment, two different definitions of capacity of a cut are used. In the first definition, capacity of a cut is taken to be the difference of the edge weights going from V(1) to V(2) and from V(2) to V(1). In the second definition, the capacity of a cut is taken to be the maximum of sum of the edge weights going front V(1) to V(2) and from V(2) to V(1). Surprisingly, with slight change of the definition of the capacity of a cut, the computational complexity of the problem changes significantly. In this paper, we show that with the new definitions of the capacity of a cut, the minimum cut computation problem becomes NP-complete. We provide an optimal solution to the problems using mathematical programming techniques. In addition, we also provide heuristic solutions and compare the performance with that of the optimal solution. Copyright (C) 2008 John Wiley & Sons, Ltd.
C1 [Sen, Arunabha; Ghosh, Pavel] Arizona State Univ, Dept Comp Sci & Engn, Tempe, AZ 85287 USA.
[Vittal, Vijay] Arizona State Univ, Dept Elect Engn, Tempe, AZ 85287 USA.
[Yang, Bo] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Ghosh, P (reprint author), Arizona State Univ, Dept Comp Sci & Engn, Tempe, AZ 85287 USA.
EM pavel.ghosh@asu.edu
NR 29
TC 11
Z9 14
U1 0
U2 6
PU JOHN WILEY & SONS LTD
PI CHICHESTER
PA THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND
SN 1430-144X
J9 EUR T ELECTR POWER
JI Eur. Trans. Electr. Power
PD SEP
PY 2009
VL 19
IS 6
BP 778
EP 797
DI 10.1002/etep.255
PG 20
WC Engineering, Electrical & Electronic
SC Engineering
GA 496AK
UT WOS:000269939400002
ER
PT J
AU Miles, PC
RempelEwert, BH
Reitz, RD
AF Miles, Paul C.
RempelEwert, Bret H.
Reitz, Rolf D.
TI Experimental assessment of a nonlinear turbulent stress relation in a
complex reciprocating engine flow
SO EXPERIMENTS IN FLUIDS
LA English
DT Article
ID MODEL
AB A nonlinear turbulent stress relationship, based on an explicit algebraic Reynolds stress closure, is compared against experimental data obtained in a swirl-supported, light-duty engine motored at constant speed. The model relationship is applied to measured mean velocity gradients and turbulence scales, and the predictions compared against the measured shear stress and normal stress anisotropy. Significant improvement over the linear stress relationship typically used in two-equation turbulence models is observed. Conditions under which the model predictions are poor are identified and the reasons for the poor performance discussed.
C1 [Miles, Paul C.] Sandia Natl Labs, Combust Res Facil, Livermore, CA 94550 USA.
[RempelEwert, Bret H.] Caterpillar Inc, Peoria, IL 61629 USA.
[Reitz, Rolf D.] Univ Wisconsin, Engine Res Ctr, Madison, WI USA.
RP Miles, PC (reprint author), Sandia Natl Labs, Combust Res Facil, Livermore, CA 94550 USA.
EM pcmiles@sandia.gov
FU U. S. Department of Energy
FX Support for this research was provided by the U. S. Department of
Energy, Office of Vehicle Technologies. The research was performed at
the University of Wisconsin (Madison) Engine Research Center and at the
Combustion Research Facility of Sandia National Laboratories. Sandia is
a multiprogram laboratory operated by Sandia Corporation, a Lockheed
Martin Company, for the United States Department of Energy's National
Nuclear Security Administration under contract DE-AC04-94AL85000.
NR 12
TC 2
Z9 2
U1 0
U2 9
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0723-4864
J9 EXP FLUIDS
JI Exp. Fluids
PD SEP
PY 2009
VL 47
IS 3
BP 451
EP 461
DI 10.1007/s00348-009-0669-7
PG 11
WC Engineering, Mechanical; Mechanics
SC Engineering; Mechanics
GA 484VT
UT WOS:000269077300007
ER
PT J
AU Shannon, GN
Matsuura, H
Rozelle, P
Fruehan, RJ
Pisupati, S
Sridhar, S
AF Shannon, G. N.
Matsuura, H.
Rozelle, P.
Fruehan, R. J.
Pisupati, S.
Sridhar, S.
TI Effect of size and density on the thermodynamic predictions of coal
particle phase formation during coal gasification
SO FUEL PROCESSING TECHNOLOGY
LA English
DT Article
DE Coal slag; Thermodynamic modeling; Iron reduction; Particle analysis
ID SLAGS; ASH
AB When coal is ground for use in a gasifier, the resulting particles will vary in physical and chemical make-up, in particular, the mineral amount and composition. The resulting ash composition distribution. by particle size and density, of ground Pittsburgh Seam coal was determined. The thermodynamically stable phases were calculated for each particle classification for a range of temperatures, with attention paid to the form of the non-slag phases, which must dissolve in the slag layer on the gasifier wall. Undissolved particles can be carried with the gas, resulting in fouling of downstream components. Results are separated into a comparison of the liquid versus solid phases formed, and a comparison of the phases formed for each particle type. Certain particle compositions form stable crystalline oxide phases that are usually incorporated into the slag at higher temperatures, while others can form metallic iron, which is stable even at high temperatures. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Pisupati, S.; Sridhar, S.] Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
[Shannon, G. N.; Fruehan, R. J.; Sridhar, S.] Carnegie Mellon Univ, Dept Mat Sci & Engn, Pittsburgh, PA 15213 USA.
[Matsuura, H.] Univ Tokyo, Dept Adv Mat Sci, Chiba 2778561, Japan.
[Rozelle, P.] US DOE, Off Clean Energy Syst, Washington, DC 20585 USA.
[Pisupati, S.] Penn State Univ, Dept Energy & Mineral Engn, University Pk, PA 16802 USA.
RP Sridhar, S (reprint author), Natl Energy Technol Lab, 626 Cochrans Mill Rd, Pittsburgh, PA 15236 USA.
EM sridhars@andrew.cmu.edu
RI Pisupati, Sarma/A-9861-2009; Matsuura, Hiroyuki/H-4877-2016
OI Pisupati, Sarma/0000-0002-2098-3302; Matsuura,
Hiroyuki/0000-0002-7632-0145
NR 23
TC 15
Z9 15
U1 1
U2 10
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-3820
J9 FUEL PROCESS TECHNOL
JI Fuel Process. Technol.
PD SEP
PY 2009
VL 90
IS 9
BP 1114
EP 1121
DI 10.1016/j.fuproc.2009.05.002
PG 8
WC Chemistry, Applied; Energy & Fuels; Engineering, Chemical
SC Chemistry; Energy & Fuels; Engineering
GA 497QU
UT WOS:000270076500009
ER
PT J
AU Moser, BR
Williams, A
Haas, MJ
McCormick, RL
AF Moser, Bryan R.
Williams, Aaron
Haas, Michael J.
McCormick, Robert L.
TI Exhaust emissions and fuel properties of partially hydrogenated soybean
oil methyl esters blended with ultra low sulfur diesel fuel
SO FUEL PROCESSING TECHNOLOGY
LA English
DT Article
DE Biodiesel; Diesel fuel; Exhaust emissions; Fatty acid methyl esters;
Physical properties; Soybean oil methyl esters
ID ENGINE PERFORMANCE; BIODIESEL FUELS; OXYGENATED FUEL; COMBUSTION;
PETRODIESEL; STRATEGIES; COMPONENTS; ADDITIVES; IMPROVER
AB Important fuel properties and emission characteristics of blends (20 vol.%) of soybean oil methyl esters (SME) and partially hydrogenated SME (PHSME) in ultra low sulfur diesel fuel (ULSD) were determined and compared with neat ULSD. The following changes were observed for B20 blends of SME and PHSME versus neat ULSD: improved lubricity, higher kinematic viscosity and cetane number, lower sulfur content, and inferior low-temperature properties and oxidative stability. With respect to exhaust emissions, B20 blends of PHSME and SME exhibited lower PM and CO emissions in comparison to those of neat ULSD. The PHSME blend also showed a significant reduction in THC emissions. Both SME and PHSME B20 blends yielded small increases in NO(x) emissions. The reduction in double bond content of PHSME did not result in a statistically significant difference in NO(x) emissions versus SME at the B20 blend level. The test engine consumed a greater amount of fuel operating on the SME and PHSME blends than on neat ULSD, but the increase was smaller for the PHSME blend. Published by Elsevier B.V.
C1 [Moser, Bryan R.] ARS, USDA, Natl Ctr Agr Utilizat Res, Peoria, IL 61604 USA.
[Williams, Aaron; McCormick, Robert L.] US DOE, Natl Renewable Energy Lab, ReFUEL Lab, Golden, CO 80401 USA.
[Haas, Michael J.] ARS, USDA, Eastern Reg Res Ctr, Wyndmoor, PA 19038 USA.
RP Moser, BR (reprint author), ARS, USDA, Natl Ctr Agr Utilizat Res, 1815 N Univ St, Peoria, IL 61604 USA.
EM Bryan.Moser@ars.usda.gov
RI McCormick, Robert/B-7928-2011
FU U.S. Department of Energy, Energy Efficiency and Renewable Energy;
Cummins, Inc.
FX The authors wish to thank Mark Matlock and the staff of Archer Daniels
Midland Company for providing partially hydrogenated soybean oil, and
Benetria N. Banks (USDA ARS NCAUR) and Pamela S. Fox (USDA ARS ERRC) for
excellent technical assistance. The National Renewable Energy Laboratory
acknowledges the support of the U.S. Department of Energy, Energy
Efficiency and Renewable Energy, Vehicle Technologies Program. Loan of
the engine by Cummins, Inc. is gratefully acknowledged.
NR 54
TC 53
Z9 53
U1 1
U2 6
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-3820
J9 FUEL PROCESS TECHNOL
JI Fuel Process. Technol.
PD SEP
PY 2009
VL 90
IS 9
BP 1122
EP 1128
DI 10.1016/j.fuproc.2009.05.004
PG 7
WC Chemistry, Applied; Energy & Fuels; Engineering, Chemical
SC Chemistry; Energy & Fuels; Engineering
GA 497QU
UT WOS:000270076500010
ER
PT J
AU Skinner, ME
Uzilov, AV
Stein, LD
Mungall, CJ
Holmes, IH
AF Skinner, Mitchell E.
Uzilov, Andrew V.
Stein, Lincoln D.
Mungall, Christopher J.
Holmes, Ian H.
TI JBrowse: A next-generation genome browser
SO GENOME RESEARCH
LA English
DT Article
ID UCSC; ANNOTATION; ALGORITHM; DATABASE; MAP
AB We describe an open source, portable, JavaScript-based genome browser, JBrowse, that can be used to navigate genome annotations over the web. JBrowse helps preserve the user's sense of location by avoiding discontinuous transitions, instead offering smoothly animated panning, zooming, navigation, and track selection. Unlike most existing genome browsers, where the genome is rendered into images on the webserver and the role of the client is restricted to displaying those images, JBrowse distributes work between the server and client and therefore uses significantly less server overhead than previous genome browsers. We report benchmark results empirically comparing server- and client-side rendering strategies, review the architecture and design considerations of JBrowse, and describe a simple wiki plug-in that allows users to upload and share annotation tracks.
C1 [Skinner, Mitchell E.; Uzilov, Andrew V.; Holmes, Ian H.] Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA.
[Stein, Lincoln D.] Ontario Inst Canc Res, Toronto, ON M5G 0A3, Canada.
[Mungall, Christopher J.; Holmes, Ian H.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Holmes, IH (reprint author), Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA.
EM ihh@berkeley.edu
OI Holmes, Ian/0000-0001-7639-5369
FU NIH [HG004483]
FX This work was funded by NIH grant HG004483. We thank the attendees of
the 2006 Biology of Genomes and 2007 RECOMB meetings for helpful
feedback about our posters, which presented the first (TiledImage)
prototypes of our browser.
NR 19
TC 208
Z9 211
U1 0
U2 15
PU COLD SPRING HARBOR LAB PRESS, PUBLICATIONS DEPT
PI WOODBURY
PA 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2924 USA
SN 1088-9051
J9 GENOME RES
JI Genome Res.
PD SEP
PY 2009
VL 19
IS 9
BP 1630
EP 1638
DI 10.1101/gr.094607.109
PG 9
WC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology;
Genetics & Heredity
SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology;
Genetics & Heredity
GA 490ET
UT WOS:000269482200014
PM 19570905
ER
PT J
AU Krot, AN
Amelin, Y
Bland, P
Ciesla, FJ
Connelly, J
Davis, AM
Huss, GR
Hutcheon, ID
Makide, K
Nagashima, K
Nyquist, LE
Russell, SS
Scott, ERD
Thrane, K
Yurimoto, H
Yin, QZ
AF Krot, A. N.
Amelin, Y.
Bland, P.
Ciesla, F. J.
Connelly, J.
Davis, A. M.
Huss, G. R.
Hutcheon, I. D.
Makide, K.
Nagashima, K.
Nyquist, L. E.
Russell, S. S.
Scott, E. R. D.
Thrane, K.
Yurimoto, H.
Yin, Q. -Z.
TI Origin and chronology of chondritic components: A review
SO GEOCHIMICA ET COSMOCHIMICA ACTA
LA English
DT Review
ID EARLY SOLAR-SYSTEM; ALUMINUM-RICH INCLUSIONS; SHORT-LIVED BE-10; OXYGEN
ISOTOPIC COMPOSITIONS; IN-SITU DECAY; CH CARBONACEOUS CHONDRITES;
REDUCED-CV CHONDRITES; ZONED METAL GRAINS; REFRACTORY INCLUSIONS;
CHONDRULE FORMATION
AB Mineralogical observations, chemical and oxygen-isotope compositions, absolute (207)Pb-(206)Pb ages and short-lived isotope systematics ((7)Be-(7)Li, (10)Be-(10)B, (26)Al-(26)Mg, (36)Cl-(36)S, (41)Ca-(41)K, (53)Mn-(53)Cr, (60)Fe-(60)Ni, (182) Hf-(182)W) of refractory inclusions [Ca,Al-rich inclusions (CAIs) and amoeboid olivine aggregates (AOAs)], chondrules and matrices from primitive (unmetamorphosed) chondrites are reviewed in an attempt to test (i) the x-wind model vs. the shock-wave model of the origin of chondritic components and (ii) irradiation vs. stellar origin of short-lived radionuclides. The data reviewed are consistent with an external, stellar origin for most short-lived radionuclides ((7)Be, (10)Be, and (36)Cl are important exceptions) and a shock-wave model for chondrule formation, and provide a sound basis for early Solar System chronology. They are inconsistent with the x-wind model for the origin of chondritic components and a local, irradiation origin of (26)Al, (41)Ca, and (53)Mn. (10)Be is heterogeneously distributed among CAIs, indicating its formation by local irradiation and precluding its use for the early solar system chronology. (41)Ca-(41)K, and (60)Fe-(60)Ni systematics are important for understanding the astrophysical setting of Solar System formation and origin of short-lived radionuclides, but so far have limited implications for the chronology of chondritic components. The chronological significance of oxygen-isotope compositions of chondritic components is limited. The following general picture of formation of chondritic components is inferred. CAIs and AOAs were the first solids formed in the solar nebula similar to 4567-4568 Myr ago, possibly within a period of <0.1 Myr, when the Sun was an infalling (class 0) and evolved (class 1) protostar. They formed during multiple transient heating events in nebular region(s) with high ambient temperature (at or above condensation temperature of forsterite), either throughout the inner protoplanetary disk (1-4 AU) or in a localized region near the proto-Sun (<0.1 AU), and were subsequently dispersed throughout the disk. Most CAIs and AOAs formed in the presence of an (16)O-rich (Delta(17)O similar to -24 +/- 2 parts per thousand) nebular gas. The (26)Al-poor [((26)Al/(27)Al)(0) < 1 x 10(-5)], (16)O-rich (Delta(17)O similar to -24 +/- 2 parts per thousand) CAIs - FUN (fractionation and unidentified nuclear effects) CAIs in CV chondrites, platy hibonite crystals (PLACs) in CM chondrites, pyroxene-hibonite spherules in CM and CO chondrites, and the majority of grossite- and hibonite-rich CAIs in CH chondrites-may have formed prior to injection and/or homogenization of (26)Al in the early Solar System. A small number of igneous CAIs in ordinary, enstatite and carbonaceous chondrites, and virtually all CAIs in CB chondrites are (16)O-depleted (Delta(17)O > - 10 parts per thousand) and have ((26)Al/(27)Al)(0) similar to those in chondrules (<1 x 10(-5)). These CAIs probably experienced melting during chondrule formation.
Chondrules and most of the fine-grained matrix materials in primitive chondrites formed 1-4 Myr after CAIs, when the Sun was a classical (class II) and weak-lined T Turi star (class III). These chondritic components formed during multiple transient heating events in regions with low ambient temperature (<1000 K) throughout the inner protoplanetary disk in the presence of (16)O-poor (Delta(17)O > -5 parts per thousand) nebular gas. The majority of chondrules within a chondrite group may have formed over a much shorter period of time (<0.5-1 Myr). Mineralogical and isotopic observations indicate that CAIs were present in the regions where chondrules formed and accreted (1-4 AU), indicating that CAIs were present in the disk as free-floating objects for at least 4 Myr. Many CAIs, however, were largely unaffected by chondrule melting, suggesting that chondrule-forming events experienced by a nebular region could have been small in scale and limited in number. Chondrules and metal grains in CB chondrites formed during a single-stage, highly-energetic event similar to 4563 Myr ago, possibly from a gas-melt plume produced by collision between planetary embryos. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Krot, A. N.; Huss, G. R.; Makide, K.; Nagashima, K.; Scott, E. R. D.] Univ Hawaii Manoa, Sch Ocean & Earth Sci & Technol, Hawaii Inst Geophys & Planetol, Honolulu, HI 96822 USA.
[Amelin, Y.] Australian Natl Univ, Inst Plant Sci, Canberra, ACT 0200, Australia.
[Amelin, Y.] Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT 0200, Australia.
[Bland, P.] Univ London Imperial Coll Sci Technol & Med, Dept Earth Sci & Engn, Impacts & Astromat Res Ctr, London SW7 2AZ, England.
[Ciesla, F. J.] Univ Chicago, Dept Geophys Sci, Chicago, IL 60637 USA.
[Connelly, J.] Univ Copenhagen, Geol Museum, DK-1350 Copenhagen, Denmark.
[Connelly, J.] Univ Texas Austin, Jackson Sch Geosci, Austin, TX 78712 USA.
[Hutcheon, I. D.] Lawrence Livermore Natl Lab, Glenn T Seaborg Inst, Livermore, CA 94451 USA.
[Nyquist, L. E.] NASA, Lyndon B Johnson Space Ctr, Houston, TX 77058 USA.
[Russell, S. S.] Nat Hist Museum, Dept Mineral, London SW7 5BD, England.
[Yurimoto, H.] Hokkaido Univ, Div Earth & Planetary Sci, Sapporo, Hokkaido 0600810, Japan.
[Yin, Q. -Z.] Univ Calif Davis, Dept Geol, Davis, CA 95616 USA.
RP Krot, AN (reprint author), Univ Hawaii Manoa, Sch Ocean & Earth Sci & Technol, Hawaii Inst Geophys & Planetol, Honolulu, HI 96822 USA.
EM sasha@higp.hawaii.edu
RI Yin, Qing-Zhu/B-8198-2009; Connelly, James /O-7996-2015;
OI Yin, Qing-Zhu/0000-0002-4445-5096; Davis, Andrew/0000-0001-7955-6236
FU NASA [NNX07AI81G, NNG05GG48G, NAG5-10523, NAG5-11591]; Department of
Energy by LLNL [W-7405-ENG-48]; NSF Instrumentation and Facilities
FX We thank Alan Boss, Marc Chaussidon, Gregory Herzog and anonymous
reviewer for critical comments and suggestions which helped to improve
the manuscript. This work was supported by NASA Grants NNX07AI81G (A.N.
Krot, PI), NNG05GG48G (G.R. Huss, PI), NAG5-10523 (I.D. Hutcheon, PI),
and NAG5-11591 (K. Keil, PI), and was performed under the auspices of
the Department of Energy by LLNL under Contract W-7405-ENG-48. The UCLA
ion microprobe laboratory is partially supported by a grant from the NSF
Instrumentation and Facilities program. This is Hawai'i Institute of
Geophysics and Planetology publication 1796 and School of Ocean and
Earth Science and Technology publication 7726.
NR 247
TC 89
Z9 91
U1 7
U2 50
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0016-7037
J9 GEOCHIM COSMOCHIM AC
JI Geochim. Cosmochim. Acta
PD SEP 1
PY 2009
VL 73
IS 17
BP 4963
EP 4997
DI 10.1016/j.gca.2008.09.039
PG 35
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 484LX
UT WOS:000269047700004
ER
PT J
AU Makide, K
Nagashima, K
Krot, AN
Huss, GR
Hutcheon, ID
Bischoff, A
AF Makide, Kentaro
Nagashima, Kazuhide
Krot, Alexander N.
Huss, Gary R.
Hutcheon, Ian D.
Bischoff, Addi
TI Oxygen- and magnesium-isotope compositions of calcium-aluminum-rich
inclusions from CR2 carbonaceous chondrites
SO GEOCHIMICA ET COSMOCHIMICA ACTA
LA English
DT Article
ID EARLY SOLAR-SYSTEM; QUEEN-ALEXANDRA RANGE-94411; HAMMADAH AL HAMRA-237;
REFRACTORY INCLUSIONS; PROTOPLANETARY DISK; ALLENDE METEORITE;
CONTEMPORANEOUS FORMATION; ELEMENT ABUNDANCES; ACCRETIONARY RIMS; CV3
CHONDRITES
AB We report both oxygen- and magnesium-isotope compositions measured in situ using a Cameca ims-1280 ion microprobe in 20 of 166 CAIs identified in 47 polished sections of 15 CR2 (Renazzo-type) carbonaceous chondrites. Two additional CAIs were measured for oxygen isotopes only. Most CR2 CAIs are mineralogically pristine; only few contain secondary phyllosilicates, sodalite, and carbonates - most likely products of aqueous alteration on the CR2 chondrite parent asteroid. Spinel, hibonite, grossite, anorthite, and melilite in 18 CAIs have (16)O-rich (Delta(17)O = -23.3 +/- 1.9 parts per thousand, 2 sigma error) compositions and show no evidence for postcrystallization isotopic exchange commonly observed in CAIs from metamorphosed CV carbonaceous chondrites. The inferred initial (26)Al/(27)Al ratios, ((26)Al/(27)Al)(0), in 15 of 16 (16)O-rich CAIs measured are consistent with the canonical value of (4.5-5) x 10(-5) and a short duration (<0.5 My) of CAI formation. These data do not support the "supra-canonical" values of ((26)Al/(27)Al)(0) [(5.85-7) x 10(-5)] inferred from whole-rock and mineral isochrons of the CV CAIs. A hibonite-grossite-rich CAI El Djouf 001 MK #5 has uniformly (16)O-rich (Delta(17)O = -23.0 +/- 1.7 parts per thousand) composition, but shows a deficit of (26)Mg and no evidence for (26)Al. Because this inclusion is (16)O-rich, like CAIs with the canonical ((26)Al/(27)Al)(0), we infer that it probably formed early, like typical CAIs, but from precursors with slightly nonsolar magnesium and lower-than-canonical (26)Al abundance. Another (16)O-enriched (Delta(17)O = -20.3 +/- 1.2 parts per thousand) inclusion, a spinel-melilite CAI fragment Gao-Guenie (b) #3, has highly-fractionated oxygen- and magnesium-isotope compositions (similar to 11 and 23 parts per thousand/amu, respectively), a deficit of (26)Mg, and a relatively low ((26)Al/(27)Al)(0) = (2.0 +/- 1.7) x 10(-5). This could be the first FUN (Fractionation and Unidentified Nuclear effects) CAI found in CR2 chondrites. Because this inclusion is slightly (16)O-depleted compared to most CR2 CAIs and has lower than the canonical ((26)Al/(27)Al)(0), it may have experienced multistage formation from precursors with nonsolar magnesium-isotope composition and recorded evolution of oxygen-isotope composition in the early solar nebula over 0.9(+2.2)(-0.7) My. Eight of the 166 CR2 CAIs identified are associated with chondrule materials, indicating that they experienced late-stage, incomplete melting during chondrule formation. Three of these CAIs show large variations in oxygen-isotope compositions (Delta(17)O ranges from -23.5 parts per thousand to -1.7 parts per thousand), suggesting dilution by (16)O-depleted chondrule material and possibly exchange with an (16)O-poor (Delta(17)O > -5 parts per thousand) nebular gas. The low inferred ((26)Al/(27)Al)(0) ratios of these CAIs (<0.7 x 10(-5)) indicate melting >2 My after crystallization of CAIs with the canonical ((26)Al/(27)Al)(0) and suggest evolution of the oxygen-isotope composition of the inner solar nebula on a similar or a shorter timescale.
Because CAIs in CR2 and CV chondrites appear to have originated in a similarly (16)O-rch reservoir and only a small number of CR2 and CV CAIs were affected by chondrule melting events in an (16)O-poor gaseous reservoir, the commonly observed oxygen-isotope heterogeneity in CAIs from metamorphosed CV chondrites is most likely due to fluid-solid isotope exchange on the CV asteroidal body rather than gas-melt exchange. This conclusion does not preclude that some CV CAIs experienced oxygen-isotope exchange during remelting, instead it implies that such remelting is unlikely to be the dominant process responsible for oxygen-isotope heterogeneity in CV CAIs. The mineralogy, oxygen and magnesium-isotope compositions of CAIs in CR2 chondrites are different from those ill the metal-rich, CH and CB carbonaceous chondrites, providing no justification for grouping CR, CH and CB chondrites into the CR clan. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Makide, Kentaro; Nagashima, Kazuhide; Krot, Alexander N.; Huss, Gary R.] Univ Hawaii Manoa, Hawaii Inst Geophys & Planetol, Sch Ocean & Earth Sci & Technol, Honolulu, HI 96822 USA.
[Hutcheon, Ian D.] Lawrence Livermore Natl Lab, Glenn T Seaborg Inst, Livermore, CA 94551 USA.
[Bischoff, Addi] Univ Munster, Inst Planetol, D-48149 Munster, Germany.
RP Krot, AN (reprint author), Univ Hawaii Manoa, Hawaii Inst Geophys & Planetol, Sch Ocean & Earth Sci & Technol, 1680 East West Rd, Honolulu, HI 96822 USA.
EM sasha@higp.hawaii.edu
FU NASA [NNX07AI81G, NNX08AH91G, NAG5-4212, NNX08AG58G, NNH04AB471]; LLNL
Institute of Geophysics and Planetary Physics; U.S. Department of Energy
by the University of California, Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]
FX We thank Harold Connolly, Andy Davis, Yunbin Guan, and Sara Russell for
critical comments and suggestions which helped to improve the
manuscript. We thank M. Killgore for providing samples of El Djouf 001
and Temple Bar for this study. This work was supported by NASA grants
NNX07AI81G and NNX08AH91G (A.N. Krot, P.I.), NAG5-4212 (K. Keil, P.I.),
NNX08AG58G (G.R. Huss, P.I.), and NNH04AB471 (I.D. Hutcheon, P.I.) and
by the LLNL Institute of Geophysics and Planetary Physics. This work was
performed under the auspices of the U.S. Department of Energy by the
University of California, Lawrence Livermore National Laboratory under
Contract DE-AC52-07NA27344. This is Hawai'i Institute of Geophysics and
Planetology publication No. 1797 and School of Ocean and Earth Science
and Technology publication No. 7727.
NR 100
TC 53
Z9 53
U1 1
U2 17
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0016-7037
J9 GEOCHIM COSMOCHIM AC
JI Geochim. Cosmochim. Acta
PD SEP 1
PY 2009
VL 73
IS 17
BP 5018
EP 5050
DI 10.1016/j.gca.2009.01.042
PG 33
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 484LX
UT WOS:000269047700006
ER
PT J
AU Hutcheon, ID
Marhas, KK
Krot, AN
Goswami, JN
Jones, RH
AF Hutcheon, I. D.
Marhas, K. K.
Krot, A. N.
Goswami, J. N.
Jones, R. H.
TI Al-26 in plagioclase-rich chondrules in carbonaceous chondrites:
Evidence for an extended duration of chondrule formation
SO GEOCHIMICA ET COSMOCHIMICA ACTA
LA English
DT Review
ID EARLY SOLAR-SYSTEM; OXYGEN ISOTOPIC COMPOSITIONS; TRACE-ELEMENT
ABUNDANCES; REDUCED-CV CHONDRITES; SHORT-LIVED NUCLIDES; REFRACTORY
INCLUSIONS; FERROMAGNESIAN CHONDRULES; CONTEMPORANEOUS FORMATION;
PRIMITIVE METEORITES; INITIAL AL-26/AL-27
AB The Al-26-Mg-26 isotope systematics in 33 petrographically and mineralogically characterized plagioclase-rich chondrules (PRCs) from 13 carbonaceous chondrites (CCs) - one ungrouped (Acfer 094), six CR, five CV, and one CO - reveal large variations in the initial Al-26/Al-27 ratio, (Al-26/Al-27)(0). Well-resolved Mg-26 excesses (delta Mg-26) from the in situ decay of the short-lived nuclide Al-16 (t(1/2) similar to 0.72 Ma) were found in nine chondrules, two from Acfer 094, five from the CV chondrites, Allende and Efremovka, and one each from the paired CR chondrites, EET 92147 and EET 92042, with (Al-26/Al-27)(0) values ranging from similar to 3 x 10(-6) to similar to 1.5 x 10(-5). Data for seven additional chondrules from three CV and two CR chondrites show evidence suggestive of the presence of Al-26 but do not yield well defined values for (Al-26/Al-27)(0) while the remaining chondrules do not contain excess radiogenic 26Mg and yield corresponding upper limits of (11-2) x 10(-6) for (Al-26/Al-27)(0). The observed range of (Al-26/Al-27)(0) in PRCs from CCs is similar to the range seen in chondrules from unequilibrated ordinary chondrites (UOCs) of low metamorphic grade (3.0-3.4). However, unlike the UOC chondrules, there is no clear trend between the (Al-26/Al-27), values in PRCs from CCs and the degree of thermal metamorphism experienced by the host meteorites. High and low values of (Al-26/Al-27)(0), are found equally in PRCs from both CCs lacking evidence for thermal metamorphism (e.g., CRs) and CCs where such evidence is abundant (e.g., CVs). The lower (Al-26/Al-27)(0) values in PRCs from CCs, relative to most CAIs, are consistent with a model in which Al-26 was distributed uniformly in the nebula when chondrule formation began, approximately a million years after the formation of the majority of CAIs. The observed range of (Al-26/Al-27)(0) values in PRCs from CCs is most plausibly explained in terms of an extended duration of similar to 2-3 Ma for the formation of CC chondrules. This interval is in sharp contrast to most CAIs from CCs, whose formation appears to be restricted to a narrow time interval of less than 10(5) years. The active solar nebula appears to have persisted for a period approaching 4 Ma, encompassing the formation of both CAIs and chondrules present in CCs, and raising important issues related to the storage, assimilation and mixing of chondrules and CAIs in the early solar system. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Hutcheon, I. D.] Lawrence Livermore Natl Lab, Glenn T Seaborg Inst, Livermore, CA 94551 USA.
[Marhas, K. K.; Goswami, J. N.] Phys Res Lab, Ahmadabad 380009, Gujarat, India.
[Krot, A. N.] Univ Hawaii Manoa, Sch Ocean Earth Sci & Technol, Hawaii Inst Geophys & Planetol, Honolulu, HI 96822 USA.
[Jones, R. H.] Univ New Mexico, Dept Earth & Planetary Sci, Albuquerque, NM 87131 USA.
RP Hutcheon, ID (reprint author), Lawrence Livermore Natl Lab, Glenn T Seaborg Inst, Livermore, CA 94551 USA.
EM hutcheon1@llnl.gov
FU NASA [NAG5-10610, NNX07AI81G, NAG5-4212, NNG06GF73G, NNH04AB47I]; LLNL
Institute of Geophysics and Planetary Physics; Dept. of Space,
Government of India
FX This work was supported by NASA Grants NAG5-10610 and NNX07AI81G (A.N.
Krot, P.I.), NAG5-4212 (K. Keil, P.I.), NNG06GF73G (R.H. Jones, P.I.)
and NNH04AB47I (I.D. Hutcheon, P.I.), and by the LLNL Institute of
Geophysics and Planetary Physics. We thank C. Alexander, T. Kunihiro and
H. Connolly for stimulating and insightful reviews and N. Kita for
skillful editorial suggestions. This work was performed under the
auspices of the U.S. Department of Energy by Lawrence Livermore National
Laboratory under Contract DE-AC52-07NA27344. J.N.G. and K.K.M.
acknowledge support provided by Dept. of Space, Government of India.
This is Hawaii Institute of Geophysics and Planetology Publication No.
1795 and School of Ocean and Earth Science and Technology Publication
No. 7764.
NR 118
TC 31
Z9 32
U1 0
U2 6
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0016-7037
J9 GEOCHIM COSMOCHIM AC
JI Geochim. Cosmochim. Acta
PD SEP 1
PY 2009
VL 73
IS 17
BP 5080
EP 5099
DI 10.1016/j.gca.2009.04.042
PG 20
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 484LX
UT WOS:000269047700008
ER
PT J
AU Commer, M
Newman, GA
AF Commer, Michael
Newman, Gregory A.
TI Three-dimensional controlled-source electromagnetic and magnetotelluric
joint inversion
SO GEOPHYSICAL JOURNAL INTERNATIONAL
LA English
DT Article
DE Numerical solutions; Inverse theory; Electrical properties;
Magnetotelluric; Marine electromagnetics
AB P>The growing use of the controlled-source electromagnetic method (CSEM) and magnetotellurics (MT) for exploration applications has been driving the development of data acquisition technologies, and three-dimensional (3-D) modelling and imaging techniques. However, targeting increasingly complex geological environments also further enhances the problems inherent in large-scale inversion, such as non-uniqueness and resolution issues. In this paper, we report on two techniques to mitigate these problems. We use 3-D joint CSEM and MT inversion to improve the model resolution. To avoid the suppression of the resolution capacities of one data type, and thus to balance the use of inherent, and ideally complementary information content, different data reweighting schemes are proposed. Further, a hybrid model parametrization approach is presented, where traditional cell-based model parameters are used simultaneously within a parametric inversion. The idea is to limit the non-uniqueness problem, typical for 3-D imaging problems, in order to allow for a more focusing inversion. The methods are demonstrated using synthetic data generated from models with a strong practical relevance.
C1 [Commer, Michael; Newman, Gregory A.] Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94270 USA.
RP Commer, M (reprint author), Lawrence Berkeley Natl Lab, Div Earth Sci, 1 Cyclotron Rd,MS 90-1116, Berkeley, CA 94270 USA.
EM MCommer@lbl.gov
RI Newman, Gregory/G-2813-2015; Commer, Michael/G-3350-2015
OI Commer, Michael/0000-0003-0015-9217
FU ExxonMobil Corporation; United States Department of Energy, Office of
Basic Energy Sciences [DE-AC02-05CH11231]
FX This study was carried out at Lawrence Berkeley National Laboratory,
with base funding provided by the ExxonMobil Corporation and the United
States Department of Energy, Office of Basic Energy Sciences, under
contract DE-AC02-05CH11231.
NR 19
TC 28
Z9 28
U1 4
U2 20
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0956-540X
J9 GEOPHYS J INT
JI Geophys. J. Int.
PD SEP
PY 2009
VL 178
IS 3
BP 1305
EP 1316
DI 10.1111/j.1365-246X.2009.04216.x
PG 12
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 483RF
UT WOS:000268984700011
ER
PT J
AU Wharton, S
Chasmer, L
Falk, M
U, KTP
AF Wharton, Sonia
Chasmer, Laura
Falk, Matthias
U, Kyaw Tha Paw
TI Strong links between teleconnections and ecosystem exchange found at a
Pacific Northwest old-growth forest from flux tower and MODIS EVI data
SO GLOBAL CHANGE BIOLOGY
LA English
DT Article
DE AmeriFlux; eddy covariance; ENSO; EVI; interannual variability; net
ecosystem exchange; old-growth forest; teleconnection patterns
ID WATER-VAPOR EXCHANGE; NORTHERN HEMISPHERE WINTER; GEOPOTENTIAL HEIGHT
FIELD; PSEUDOTSUGA-TSUGA FOREST; NET PRIMARY PRODUCTIVITY; DOUGLAS-FIR
FOREST; LEAF-AREA INDEX; CARBON-DIOXIDE; EDDY-COVARIANCE; PONDEROSA PINE
AB Variability in three Pacific teleconnection patterns are examined to see if net carbon exchange at a low-elevation, old-growth forest is affected by climatic changes associated with these periodicities. Examined are the Pacific Decadal Oscillation (PDO), Pacific/North American Oscillation (PNA) and El Nino-Southern Oscillation (ENSO). We use 9 years of eddy covariance CO(2), H(2)O and energy fluxes measured at the Wind River AmeriFlux site, Washington, USA and 8 years of tower-pixel remote sensing data from the Moderate Resolution Imaging Spectroradiometer (MODIS) to address this question. We compute a new Composite Climate Index (CCI) based on the three Pacific Oscillations to divide the measurement period into positive- (2003 and 2005), negative- (1999 and 2000) and neutral-phase climate years (2001, 2002, 2004, 2006 and 2007). The forest transitioned from an annual net carbon sink (NEP=+217 g C m(-2) yr(-1), 1999) to a source (NEP=-100 g C m(-2) yr(-1), 2003) during two dominant teleconnection patterns. Net ecosystem productivity (NEP), water use efficiency (WUE) and light use efficiency (LUE) were significantly different (P < 0.01) during positive (NEP=-0.27 g C m(-2) day(-1), WUE=4.1 mg C g(-1) H(2)O, LUE=0.94 g C MJ(-1)) and negative (NEP=+0.37 g C m(-2) day(-1), WUE=3.4 mg C g(-1) H(2)O, LUE=0.83 g C MJ(-1)) climate phases. The CCI was linked to variability in the MODIS Enhanced Vegetation Index (EVI) but not to MODIS Fraction of absorbed Photosynthetically Active Radiation (FPAR). EVI was highest during negative climate phases (1999 and 2000) and was positively correlated with NEP and showed potential for using MODIS to estimate teleconnection-driven anomalies in ecosystem CO(2) exchange in old-growth forests. This work suggests that any increase in the strength or frequency of ENSO coinciding with in-phase, low frequency Pacific oscillations (PDO and PNA) will likely increase CO(2) uptake variability in Pacific Northwest conifer forests.
C1 [Wharton, Sonia; Falk, Matthias; U, Kyaw Tha Paw] Univ Calif Davis, Davis, CA 95616 USA.
[Chasmer, Laura] Wilfrid Laurier Univ, Cold Reg Res Ctr, Waterloo, ON N2L 3C5, Canada.
RP Wharton, S (reprint author), Lawrence Livermore Natl Lab, Atmospher Earth & Energy Div, POB 808,L-103, Livermore, CA 94551 USA.
EM wharton4@llnl.gov
FU Office of Science (BER); US Department of Energy [DE-FC03-90ER61010];
University of Washington; USDA Forest Service/PNW Station
FX The authors would like to thank the researchers and staff at the Wind
River Canopy Crane Research Facility (WRCCRF) for their hospitality and
assistance throughout this project, including Dr. Ken Bible (U
Washington), Mark Creighton and Annie Hamilton. Special thanks are given
to our field technician Matt Schroeder. Additional gratitude goes to
Drs. Susan Ustin and Ruth Reck (UC Davis), Eugenia Gonzalez (UC Davis),
and Drs. Dennis Baldocchi and Rodrigo Vargas (UC Berkeley) for their
technical advice and help in the preparation of this manuscript, and to
the GCB reviewers and Editor for their helpful suggestions and
critiques. This research was supported by the Office of Science (BER),
US Department of Energy, through the Western Regional Center of the
National Institute for Global Environmental Change (Cooperative
Agreement NO. DE-FC03-90ER61010). Any opinions, findings and conclusions
or recommendations expressed herein are those of the authors and do not
necessarily reflect the view of the DOE. The Wind River Canopy Crane
Research Facility is operated under joint sponsorship of the University
of Washington and the USDA Forest Service/PNW Station and we acknowledge
both for significant support. Lawrence Livermore National Laboratory is
operated by Lawrence Livermore National Security, LLC, for the U.S.
Department of Energy, National Nuclear Security Administration under
Contract DE-AC52-07NA27344.
NR 87
TC 9
Z9 9
U1 1
U2 23
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 1354-1013
J9 GLOBAL CHANGE BIOL
JI Glob. Change Biol.
PD SEP
PY 2009
VL 15
IS 9
BP 2187
EP 2205
DI 10.1111/j.1365-2486.2009.01952.x
PG 19
WC Biodiversity Conservation; Ecology; Environmental Sciences
SC Biodiversity & Conservation; Environmental Sciences & Ecology
GA 479TQ
UT WOS:000268684200008
ER
PT J
AU Cey, BD
Hudson, GB
Moran, JE
Scanlon, BR
AF Cey, Bradley D.
Hudson, G. Bryant
Moran, Jean E.
Scanlon, Bridget R.
TI Evaluation of Noble Gas Recharge Temperatures in a Shallow Unconfined
Aquifer
SO GROUND WATER
LA English
DT Article
ID LAST GLACIAL MAXIMUM; EXCESS AIR; POROUS-MEDIA; GROUND-WATER;
DENITRIFICATION; SOLUBILITY; SEAWATER; NITROGEN; ARGON; RECONSTRUCTION
AB Water table temperatures inferred from dissolved noble gas concentrations (noble gas temperatures, NGT) are useful as a quantitative proxy for air temperature change since the last glacial maximum. Despite their importance in paleoclimate research, few studies have investigated the relationship between NGT and actual recharge temperatures in field settings. This study presents dissolved noble gas data from a shallow unconfined aquifer heavily impacted by agriculture. Considering samples unaffected by degassing, NGT calculated from common physically based interpretive gas dissolution models that correct measured noble gas concentrations for "excess air" agreed with measured water table temperatures (WTT). The ability to fit data to multiple interpretive models indicates that model goodness-of-fit does not necessarily mean that the model reflects actual gas dissolution processes. Although NGT are useful in that they reflect WTT, caution is recommended when using these interpretive models. There was no measurable difference in excess air characteristics (amount and degree of fractionation) between two recharge regimes studied (higher flux recharge primarily during spring and summer vs. continuous, low flux recharge). Approximately 20% of samples had dissolved gas concentrations below equilibrium concentration with respect to atmospheric pressure, indicating degassing. Geochemical and dissolved gas data indicate that saturated zone denitrification caused degassing by gas stripping. Modeling indicates that minor degassing (< 10% delta Ne) may cause underestimation of ground water recharge temperature by up to 2 degrees C. Such errors are problematic because degassing may not be apparent and degassed samples may be fit by a model with a high degree of certainty.
C1 [Cey, Bradley D.] Univ Texas Austin, Jackson Sch Geosci, Dept Geol Sci, Austin, TX 78712 USA.
[Hudson, G. Bryant] Lawrence Livermore Natl Lab, Div Chem Sci, Livermore, CA 94550 USA.
[Moran, Jean E.] Calif State Univ Hayward, Dept Earth & Environm Sci, Hayward, CA 94542 USA.
[Scanlon, Bridget R.] Univ Texas Austin, Jackson Sch Geosci, Bur Econ Geol, Austin, TX 78712 USA.
RP Cey, BD (reprint author), Univ Texas Austin, Jackson Sch Geosci, Dept Geol Sci, 1 Univ Stn C1100, Austin, TX 78712 USA.
EM cey.home@gmail.com
RI Scanlon, Bridget/A-3105-2009
OI Scanlon, Bridget/0000-0002-1234-4199
FU California State Water Resources Control Board Groundwater Ambient
Monitoring and Assessment (GAMA); Glenn T. Seaborg Institute
FX Funding was provided by the California State Water Resources Control
Board Groundwater Ambient Monitoring and Assessment (GAMA) Program,
Lawrence Livermore National Laboratory, the Jackson School of
Geosciences, and the Glenn T. Seaborg Institute (fellowship to B.D.C.).
We acknowledge Dr. Brad Esser for his sustained support of the project,
Dr. Mike Singleton for assistance with sampling and analyses, Mr. Wayne
Culham for assistance with sample analyses, and the landowner for access
to the study site. This paper benefited from the insightful and
constructive comments of Drs. Kip Solomon and Stephen van der Hoven, and
two anonymous reviewers.
NR 48
TC 18
Z9 19
U1 0
U2 14
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0017-467X
EI 1745-6584
J9 GROUND WATER
JI Ground Water
PD SEP-OCT
PY 2009
VL 47
IS 5
BP 646
EP 659
DI 10.1111/j.1745-6584.2009.00562.x
PG 14
WC Geosciences, Multidisciplinary; Water Resources
SC Geology; Water Resources
GA 489WS
UT WOS:000269457200010
PM 19735308
ER
PT J
AU Roach, J
Tidwell, V
AF Roach, Jesse
Tidwell, Vince
TI A Compartmental-Spatial System Dynamics Approach to Ground Water
Modeling
SO GROUND WATER
LA English
DT Article
ID SCIENCE
AB High-resolution, spatially distributed ground water flow models can prove unsuitable for the rapid, interactive analysis that is increasingly demanded to support a participatory decision environment. To address this shortcoming, we extend the idea of multiple cell (Bear 1979) and compartmental (Campana and Simpson 1984) ground water models developed within the context of spatial system dynamics (Ahmad and Simonovic 2004) for rapid scenario analysis. We term this approach compartmental-spatial system dynamics (CSSD). The goal is to balance spatial aggregation necessary to achieve a real-time integrative and interactive decision environment while maintaining sufficient model complexity to yield a meaningful representation of the regional ground water system. As a test case, a 51-compartment CSSD model was built and calibrated from a 100,000+ cell MODFLOW (McDonald and Harbaugh 1988) model of the Albuquerque Basin in central New Mexico (McAda and Barroll 2002). Seventy-seven percent of historical drawdowns predicted by the MODFLOW model were within 1 m of the corresponding CSSD estimates, and in 80% of the historical model run years the CSSD model estimates of river leakage, reservoir leakage, ground water flow to agricultural drains, and riparian evapotranspiration were within 30% of the corresponding estimates from McAda and Barroll (2002), with improved model agreement during the scenario period. Comparisons of model results demonstrate both advantages and limitations of the CCSD model approach.
C1 [Roach, Jesse; Tidwell, Vince] Sandia Natl Labs, Earth Syst Dept, Albuquerque, NM 87185 USA.
RP Roach, J (reprint author), Sandia Natl Labs, Earth Syst Dept, POB 5800,MS 0735, Albuquerque, NM 87185 USA.
EM jdroach@sandia.gov; vctidwe@sandia.gov
FU Sandia National Laboratories; U.S. Department of Energy
[DE-AC04-94AL85000]
FX The authors would like to thank Michael Barden and two anonymous
reviewers for valuable feedback and suggestions for improvement of this
paper. In addition, we would like to acknowledge the assistance provided
during model development and review by the Upper Rio Grande Water
Operations Model technical team. The first author received support from
Sandia National Laboratories through a Campus Executive Fellowship while
attending the University of Arizona. Funding for this project was
provided through Sandia National Laboratories' Laboratory Directed
Research and Development program. Sandia is a multiprogram laboratory
operated by Sandia Corporation, a Lockheed Martin Company, for the U.S.
Department of Energy's National Nuclear Security Administration under
contract DE-AC04-94AL85000.
NR 24
TC 11
Z9 11
U1 1
U2 9
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0017-467X
J9 GROUND WATER
JI Ground Water
PD SEP-OCT
PY 2009
VL 47
IS 5
BP 686
EP 698
DI 10.1111/j.1745-6584.2009.00580.x
PG 13
WC Geosciences, Multidisciplinary; Water Resources
SC Geology; Water Resources
GA 489WS
UT WOS:000269457200014
PM 19459984
ER
PT J
AU Zeman, R
Lobaugh, M
Spitz, H
Glover, S
Hickman, D
AF Zeman, Rachel
Lobaugh, Megan
Spitz, Henry
Glover, Samuel
Hickman, David
TI A CALIBRATION PHANTOM FOR DIRECT, IN VIVO MEASUREMENT OF Am-241 IN THE
AXILLARY LYMPH NODES
SO HEALTH PHYSICS
LA English
DT Article
DE Am-241; exposure, occupational; lungs, human; phantom
ID BREAST-CANCER; PLUTONIUM; DEPTH
AB A calibration phantom was developed at the University of Cincinnati (UC) to determine detection efficiency and estimate the quantity of activity deposited in the axillary lymph nodes of a worker who had unknowingly sustained a wound contaminated with Am-241 at some distant time in the past. This paper describes how the Livermore Torso Phantom was modified for calibrating direct, in vivo measurements of Am-241 deposited in the axillary lymph nodes. Modifications involved milling a pair of parallel, flat bottom, cylindrical holes into the left and right shoulders (below the humeral head) of the Livermore Torso Phantom in which solid, 1.40-cm-diameter cylindrical rods were inserted. Each rod was fabricated using a muscle tissue substitute. One end of each rod contained a precisely known quantity of Am-241 sealed in a 1-cm-diameter, 2.54-cm-deep well to simulate the axillary lymph nodes when inserted into the modified Livermore Torso Phantom. The fixed locations for the axillary lymph nodes in the phantom were determined according to the position of the Level I and the combined Level II + III axillary lymph nodes reported in the literature. Discrete calibration measurements for Am-241 in the simulated axillary lymph nodes located in the right and left sides of the thorax were performed using pairs of high-resolution germanium detectors at UC and Lawrence Livermore National Laboratory. The percent efficiency for measuring the 59.5 keV photon from Am-241 deposited in the right and left axillary lymph nodes using a pair of 3,000 mm(2) detectors is 2.60 +/- 0.03 counts gamma(-1) and 5.45 +/- 0.07 counts gamma(-1), respectively. Activity deposited in the right and left axillary lymph nodes was found to contribute 12.5% and 19.7%, respectively, to a lung measurement and 1.2% and 0.2%, respectively, to a liver measurement. Thus, radioactive material mobilized from a wound in a ringer or hand and deposited in the axillary lymph nodes has been shown to confound results of a direct, in vivo measurement of the lungs. Health Phys. 97(3):219-227; 2009
C1 [Zeman, Rachel; Lobaugh, Megan; Spitz, Henry; Glover, Samuel] Univ Cincinnati, Nucl Engn Program, Cincinnati, OH 45221 USA.
[Hickman, David] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Spitz, H (reprint author), Univ Cincinnati, Nucl Engn Program, 598 Rhodes Hall, Cincinnati, OH 45221 USA.
EM henry.spitz@uc.edu
NR 25
TC 3
Z9 3
U1 3
U2 3
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0017-9078
EI 1538-5159
J9 HEALTH PHYS
JI Health Phys.
PD SEP
PY 2009
VL 97
IS 3
BP 219
EP 227
PG 9
WC Environmental Sciences; Public, Environmental & Occupational Health;
Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical
Imaging
SC Environmental Sciences & Ecology; Public, Environmental & Occupational
Health; Nuclear Science & Technology; Radiology, Nuclear Medicine &
Medical Imaging
GA 482TJ
UT WOS:000268911300005
PM 19667805
ER
PT J
AU Whicker, JJ
Justus, AL
AF Whicker, Jeffrey J.
Justus, Alan L.
TI PROBABILISTIC MODEL EVALUATION OF CONTINUOUS AIR MONITOR RESPONSE FOR
MEETING RADIATION PROTECTION GOALS
SO HEALTH PHYSICS
LA English
DT Article
DE accidents, nuclear; aerosols; air sampling; analysis, risk
ID WORKER PROTECTION; FLOW
AB Effective continuous air monitor (CAM) programs can eliminate or significantly reduce the amount of inhaled radioactive material following an accidental release. Numerous factors impact the levels of protection CAM programs provide to the workers during these releases. These factors range from those related to the capability of the CAM instrument (e.g., CAM alarm set point and length of counting intervals) to those related to CAM placement in the room relative to dispersion rates and patterns of the released material in a room. While the impact of many of these factors on alarm sensitivity has been investigated in isolation, there are no methods for holistic evaluations of CAM programs relative to radiation protection goals (RPGs) or the contribution of the factors, either individually or combined, toward limiting worker dose. In this study, worker exposure was predicted using CAM response models developed to evaluate protection levels for continuous and acute releases. Monte Carlo simulations of 10,000 releases were performed using various combinations of model parameter values, with associated uncertainty distributions, to assess the expected ability of a CAM program to meet RPGs, and, further, to assess the relative influence of each factor toward lowering worker exposure. Results showed that improvements to CAM instrument capability combined with better ventilation and CAM placement improve worker protection nonlinearly and that these improvements are critical to meet RPGs. The sensitivity analysis showed that ventilation-driven dilution had the greatest impact on exposure reduction with the selected counting interval for alarm decisions and the alarm set point as secondarily important. Health Phys. 97(3):228-241; 2009
C1 [Whicker, Jeffrey J.] Los Alamos Natl Lab, Environm Programs, Los Alamos, NM 87545 USA.
RP Whicker, JJ (reprint author), Los Alamos Natl Lab, Environm Programs, Mail Stop M992, Los Alamos, NM 87545 USA.
EM jjwhicker@lanl.gov
FU U.S. Department of Energy [W7405 ENG-36]
FX Acknowledgments-We would like to thank Jeffrey Hoffman and Shawna Eisele
from LANL for their support of the project. We also very much appreciate
the efforts of the anonymous reviewers, and especially the careful work
of the Health Physics Journal Editor whose suggestions greatly improved
this paper. The research was supported through the U.S. Department of
Energy through Los Alamos National Laboratory under contract W7405
ENG-36.
NR 23
TC 1
Z9 1
U1 0
U2 0
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0017-9078
EI 1538-5159
J9 HEALTH PHYS
JI Health Phys.
PD SEP
PY 2009
VL 97
IS 3
BP 228
EP 241
PG 14
WC Environmental Sciences; Public, Environmental & Occupational Health;
Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical
Imaging
SC Environmental Sciences & Ecology; Public, Environmental & Occupational
Health; Nuclear Science & Technology; Radiology, Nuclear Medicine &
Medical Imaging
GA 482TJ
UT WOS:000268911300006
PM 19667806
ER
PT J
AU LaBone, ED
Farfan, EB
Lee, PL
Jannik, GT
Donnelly, EH
Foley, TQ
AF LaBone, Elizabeth D.
Farfan, Eduardo B.
Lee, Patricia L.
Jannik, G. Timothy
Donnelly, Elizabeth H.
Foley, Trevor Q.
TI ASSESSMENT OF RADIONUCLIDE DATABASES IN CAP88 MAINFRAME VERSION 1.0 AND
WINDOWS-BASED VERSION 3.0
SO HEALTH PHYSICS
LA English
DT Article
DE dose assessment; dose, population; dosimetry; modeling, dose assessment
AB In this study the radionuclide databases for two versions of the Clean Air Act Assessment Package-1988 (CAP88) computer model were assessed in detail. CAP88 estimates radiation dose and the risk of health effects to human populations from radionuclide emissions to air. This program is used by several U.S. Department of Energy (DOE) facilities to comply with National Emission Standards for Hazardous Air Pollutants regulations. CAP88 Mainframe, referred to as version 1.0 on the U.S. Environmental Protection Agency Web site (http://www.epa.gov/radiation/assessment/CAP88/), was the very first CAP88 version released in 1988. Some DOE facilities including the Savannah River Site still employ this version (1.0) while others use the more user-friendly personal computer Windows-based version 3.0 released in December 2007. Version 1.0 uses the program RADRISK based on International Commission on Radiological Protection Publication 30 as its radionuclide database. Version 3.0 uses half-life, dose, and risk factor values based on Federal Guidance Report 13. Differences in these values could cause different results for the same input exposure data (same scenario), depending on which version of CAP88 is used. Consequently, the differences between the two versions are being assessed in detail at Savannah River National Laboratory. The version 1.0 and 3.0 database riles contain 496 and 838 radionuclides, respectively, and though one would expect the newer version to include all the 496 radionuclides, 35 radionuclides are listed in version 1.0 that are not included in version 3.0. The majority of these has either extremely short or long half-lives or is no longer in production; however, some of the short-lived radionuclides might produce progeny of great interest at DOE sites. In addition, 122 radionuclides were found to have different half-lives in the two versions, with 21 over 3 percent different and 12 over 10 percent different. Health Phys. 97(3):242-247; 2009
C1 [Farfan, Eduardo B.] Savannah River Nucl Solut LLC, Savannah River Natl Lab, Environm Sci & Biotechnol, Environm Anal Sect, Aiken, SC 29808 USA.
[LaBone, Elizabeth D.] Univ S Carolina, Columbia, SC 29208 USA.
[Donnelly, Elizabeth H.] Ctr Dis Control & Prevent, Atlanta, GA 30341 USA.
RP Farfan, EB (reprint author), Savannah River Nucl Solut LLC, Savannah River Natl Lab, Environm Sci & Biotechnol, Environm Anal Sect, 773-42A,Room 236, Aiken, SC 29808 USA.
EM Eduardo.Farfan@srnl.doe.gov
NR 6
TC 0
Z9 0
U1 0
U2 0
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0017-9078
EI 1538-5159
J9 HEALTH PHYS
JI Health Phys.
PD SEP
PY 2009
VL 97
IS 3
BP 242
EP 247
PG 6
WC Environmental Sciences; Public, Environmental & Occupational Health;
Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical
Imaging
SC Environmental Sciences & Ecology; Public, Environmental & Occupational
Health; Nuclear Science & Technology; Radiology, Nuclear Medicine &
Medical Imaging
GA 482TJ
UT WOS:000268911300007
PM 19667807
ER
PT J
AU Whicker, JJ
McNaughton, MW
AF Whicker, Jeffrey J.
McNaughton, Michael W.
TI WORK TO SAVE DOSE: CONTRASTING EFFECTIVE DOSE RATES FROM RADON EXPOSURE
IN WORKPLACES AND RESIDENCES AGAINST THE BACKDROP OF PUBLIC AND
OCCUPATIONAL REGULATORY LIMITS
SO HEALTH PHYSICS
LA English
DT Article
DE dose assessment; radioactivity, airborne; radon; safety standards
ID UNITED-STATES HOMES; LUNG-CANCER; RISK; PROTECTION
AB Office workers are exposed to radon while at work and at home. Though there are a multitude of studies reporting radon concentrations and potential lung and effective doses associated with radon progeny exposure in homes, similar studies in non-mine workplaces are lacking. Additionally, there are few, if any, comparative analyses of radon exposures at more "typical" workplace with residential exposures within the same county. The purposes of this study were to measure radon concentrations in office and residential spaces in the same county and explore the radiation dose implications. Sixty-five track-etch detectors were deployed for 3-mo sampling periods in office spaces and 47 were deployed in residences, all within Los Alamos County, New Mexico. The measured concentrations were used to calculate and compare effective dose rates resulting from exposure while at work and at home. Results showed that full-time office workers receive on average about 8 times greater exposure at home than while in the office (2.3 mSv y(-1) vs. 0.3 mSv y(-1)). The estimated effective dose rate for a more homebound person was about 3 mSv y(-1). Estimating effective doses from background radon exposure in the same county as Los Alamos National Laboratory, with thousands of "radiological workers," highlights interesting contrasts in radiation protection standards that span public and occupational settings. For example, the effective dose rate from background radon exposure in unregulated office spaces ranged up to 1.1 mSv y(-1), which is similar to the 1 mSv y(-1) threshold for regulation of a "radiological worker," as defined in the Department of Energy regulations for occupational exposure. Additionally, the estimated average effective dose total of >3 mSv y(-1) from radon background exposure in homes stands in contrast to the 0.1 mSv y(-1) air pathway effective public dose limit regulated by the Environmental Protection Agency for radioactive air emissions, and both these are substantially lower than effective doses associated with priority radon levels in homes of "tens of pCi L-1 and greater" (>370 Bq m(-3)), as suggested by the Health Physics Society. Health Phys. 97(3):248-256; 2009
C1 [Whicker, Jeffrey J.; McNaughton, Michael W.] Los Alamos Natl Lab, Environm Programs, Los Alamos, NM 87545 USA.
RP Whicker, JJ (reprint author), Los Alamos Natl Lab, Environm Programs, Mail Stop M992, Los Alamos, NM 87545 USA.
EM jjwhicker@lanl.gov
NR 30
TC 4
Z9 4
U1 0
U2 2
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 0017-9078
EI 1538-5159
J9 HEALTH PHYS
JI Health Phys.
PD SEP
PY 2009
VL 97
IS 3
BP 248
EP 256
PG 9
WC Environmental Sciences; Public, Environmental & Occupational Health;
Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical
Imaging
SC Environmental Sciences & Ecology; Public, Environmental & Occupational
Health; Nuclear Science & Technology; Radiology, Nuclear Medicine &
Medical Imaging
GA 482TJ
UT WOS:000268911300008
PM 19667808
ER
PT J
AU Vinko, SM
Gregori, G
Desjarlais, MP
Nagler, B
Whitcher, TJ
Lee, RW
Audebert, P
Wark, JS
AF Vinko, Sam M.
Gregori, Gianluca
Desjarlais, Michael P.
Nagler, Bob
Whitcher, Thomas J.
Lee, Richard W.
Audebert, Patrick
Wark, Justin S.
TI Free-free opacity in warm dense aluminum
SO HIGH ENERGY DENSITY PHYSICS
LA English
DT Article
DE Warm dense matter; Free-free opacity; Molecular dynamics simulations;
XUV spectroscopy
ID HIGH-FREQUENCY CONDUCTIVITY; TOTAL-ENERGY CALCULATIONS; AUGMENTED-WAVE
METHOD; FULLY IONIZED PLASMA; SIMPLE METALS; DIELECTRIC RESPONSE;
BRILLOUIN-ZONE; BASIS-SET; ABSORPTION; SEMICONDUCTORS
AB We present calculations of the free-free opacity of warm, solid-density aluminum at photon energies between the plasma frequency at 15 eV and the L-edge at 73 eV, using both density functional theory combined with molecular dynamics and a semi-analytical model in the RPA framework which includes exciton contributions. As both the ion and electron temperature is increased from room temperature to 10 eV, we see a marked increase in the opacity. The effect is less pronounced if only the electron temperature is allowed to increase, while the lattice remains at room temperature. The physical significance of these increases is discussed in terms of intense light-matter interactions on both femtosecond and picosecond time scales. (c) 2009 Elsevier B.V. All rights reserved.
C1 [Vinko, Sam M.; Gregori, Gianluca; Nagler, Bob; Whitcher, Thomas J.; Wark, Justin S.] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England.
[Desjarlais, Michael P.] Sandia Natl Labs, Pulsed Power Sci Ctr, Albuquerque, NM 87185 USA.
[Lee, Richard W.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Audebert, Patrick] UPMC, CEA, CNRS, LULI,Ecole Polytech, F-91128 Palaiseau, France.
RP Vinko, SM (reprint author), Univ Oxford, Dept Phys, Clarendon Lab, Parks Rd, Oxford OX1 3PU, England.
EM sam.vinko@physics.ox.ac.uk
RI Vinko, Sam/I-4845-2013
OI Vinko, Sam/0000-0003-1016-0975
FU EPSRC; STFC; United States Department of Energy's National Nuclear
Security Administration [DE-AC04-94AL85000]
FX S.M.V. gratefully acknowledges financial support from EPSRC and STFC.
M.P.D. is supported by Sandia, a multiprogram laboratory operated by
Sandia Corporation, a Lockheed Martin Company, for the United States
Department of Energy's National Nuclear Security Administration under
Contract No. DE-AC04-94AL85000. J.S.W. gratefully acknowledges support
from DGAR Ecole Polytechnique during sabbatical.
NR 38
TC 16
Z9 16
U1 1
U2 10
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1574-1818
J9 HIGH ENERG DENS PHYS
JI High Energy Density Phys.
PD SEP
PY 2009
VL 5
IS 3
BP 124
EP 131
DI 10.1016/j.hedp.2009.04.004
PG 8
WC Physics, Fluids & Plasmas
SC Physics
GA 657LE
UT WOS:000282413400002
ER
PT J
AU Doppner, T
Landen, OL
Lee, HJ
Neumayer, P
Regan, SP
Glenzer, SH
AF Doeppner, T.
Landen, O. L.
Lee, H. J.
Neumayer, P.
Regan, S. P.
Glenzer, S. H.
TI Temperature measurement through detailed balance in x-ray Thomson
scattering
SO HIGH ENERGY DENSITY PHYSICS
LA English
DT Article
DE Warm dense matter; Plasma diagnostic; Thomson scattering; Plasmons
AB The plasma conditions in isochorically heated beryllium are measured by collective x-ray Thomson scattering. The collectively scattered Cl Ly-alpha x-ray line at 2.96 key shows up- and down-shifted plasmon signals. From the detailed balance relation, i.e., the ratio of the up-shifted to the down-shifted plasmon intensities, the plasma temperature can be determined independent of model assumptions. Results are shown for an experiment in which a temperature of 18 eV was measured. Using detailed balance for temperature measurement will be important to validate models that calculate the static ion-ion structure factor S(ii)(k). Published by Elsevier B.V.
C1 [Doeppner, T.; Landen, O. L.; Neumayer, P.; Glenzer, S. H.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Lee, H. J.] Univ Calif Berkeley, Berkeley, CA 94720 USA.
[Regan, S. P.] Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA.
RP Doppner, T (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA.
EM doeppner1@llnl.gov
FU U.S. Department of Energy by the Lawrence Livermore National Laboratory,
through the Institute for Laser Science and Applications
[DE-AC52-07NA27344]; Laboratory Directed Research and Development
[08-LW-004, 08-ERI-002]
FX This work was performed under the auspices of the U.S. Department of
Energy by the Lawrence Livermore National Laboratory, through the
Institute for Laser Science and Applications, under contract
DE-AC52-07NA27344. The authors also acknowledge support from Laboratory
Directed Research and Development Grants No. 08-LW-004 and 08-ERI-002.
NR 14
TC 25
Z9 25
U1 0
U2 10
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1574-1818
J9 HIGH ENERG DENS PHYS
JI High Energy Density Phys.
PD SEP
PY 2009
VL 5
IS 3
BP 182
EP 186
DI 10.1016/j.hedp.2009.05.012
PG 5
WC Physics, Fluids & Plasmas
SC Physics
GA 657LE
UT WOS:000282413400011
ER
PT J
AU Abdallah, J
Sherrill, ME
Kilcrease, DP
Fontes, CJ
Zhang, HL
Oelgoetz, J
AF Abdallah, Joseph, Jr.
Sherrill, M. E.
Kilcrease, D. P.
Fontes, C. J.
Zhang, H. L.
Oelgoetz, J.
TI The reduced detailed configuration accounting (RDCA) model for NLTE
plasma spectral calculations
SO HIGH ENERGY DENSITY PHYSICS
LA English
DT Article
DE NLTE population kinetics; Detailed configuration accounting; Spectrum
synthesis
ID OPACITY
AB The purpose of this work is to continue development of a model to provide a fast and accurate in-line NLTE capability for calculating plasma spectral properties in large-scale radiation-transport hydrodynamic simulations. A method has recently been developed to transform the large detailed atomic models into very small models that can be used for fast in-line calculations. The reduced model is more accurate than the average-atom models conventionally used in such simulations. In the present work, spectra calculated with the reduced model are compared to the original detailed model and the average-atom model. The spectra of iron and gold plasmas under various plasma conditions are compared. (c) 2009 Elsevier B.V. All rights reserved.
C1 [Abdallah, Joseph, Jr.; Sherrill, M. E.; Kilcrease, D. P.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Fontes, C. J.; Zhang, H. L.; Oelgoetz, J.] Los Alamos Natl Lab, Div Appl Phys, NAD X1, Los Alamos, NM 87545 USA.
[Oelgoetz, J.] Austin Peay State Univ, Dept Phys & Astron, Clarksville, TN 37044 USA.
RP Abdallah, J (reprint author), Los Alamos Natl Lab, Div Theoret, T-1, Los Alamos, NM 87545 USA.
EM adb@lanl.gov
OI Kilcrease, David/0000-0002-2319-5934
FU U.S. Department of Energy [DE-AC52-06NA25396]
FX This work was performed under the auspices of the U.S. Department of
Energy, contract, DE-AC52-06NA25396.
NR 12
TC 4
Z9 4
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1574-1818
J9 HIGH ENERG DENS PHYS
JI High Energy Density Phys.
PD SEP
PY 2009
VL 5
IS 3
BP 204
EP 207
DI 10.1016/j.hedp.2009.05.006
PG 4
WC Physics, Fluids & Plasmas
SC Physics
GA 657LE
UT WOS:000282413400015
ER
PT J
AU Kieffer, SW
Lu, XL
McFarquhar, G
Wohletz, KH
AF Kieffer, Susan W.
Lu, Xinli
McFarquhar, Greg
Wohletz, Kenneth H.
TI A redetermination of the ice/vapor ratio of Enceladus' plumes:
Implications for sublimation and the lack of a liquid water reservoir
SO ICARUS
LA English
DT Article
DE Enceladus; Ices
ID E-RING; SOUTH
AB The discovery of plumes of H(2)O vapor and ice particles erupting from the south pole of Enceladus, the tiny frigid satellite of Saturn, sparked controversy over whether these plumes are produced by boiling, or by sublimation with subsequent recondensation of the sublimated vapor [Porco, C.C., Helfenstein, P., Thomas, P.C., Ingersoll, A.P., Wisdom, J., West, R., Neukum, G., Denk, T., Wagner, R., Roatsch, T., Kieffer, S., Turtle, E., McEwen, A., Johnson, TV., Rathbun, J., Veverka, J., Wilson, D., Perry, J., Spitale, J., Brahic, A., Burns, J.A., DelGenio, A.D., Dones, L., Murray, C.D., Squyres, S., 2006. Science 311, 1393-1401]. Porco et al.'s analysis that the masses of ice (I) and vapor (V) ill the plume were comparable was taken to argue against the occurrence of sublimation and recondensation, leading to the hypothesis that the reservoir was boiling water, possibly as close as 7 m to the surface. Thus, it has been advocated that Enceladus should be a target for astrobiology exploration. Here we show, with recalculations using the original data and methodologies, as well as with new sensitivity studies, that the mass of ice in the column is significantly less than the mass of water vapor, and that by considering three additional effects, I/V is likely to be <0.2-0.1. This means that the plume is dominated by vapor that the thermodynamics permits to be easily produced by sublimation with recondensation. The low I/V ratio provides no compelling criterion for consideration of a liquid water reservoir. The uncertainties on the I/V ratio have not previously been discussed in the literature. Although the I/V ratio is sensitive to particle sizes and size distributions, the masses of ice (1) and vapor (V) are not comparable in any scenario constrained by available observations. We thus discuss the implications of sublimation from a thermodynamic point of view in a context that has not been presented previously. Constraints on I/V ratio from future spacecraft measurements of the plume, in conjunction with consideration of the total plume composition and multicomponent analysis, can help constrain source conditions for the plume. Crown Copyright (C) 2009 Published by Elsevier Inc. All rights reserved.
C1 [Kieffer, Susan W.; Lu, Xinli] Univ Illinois, Dept Geol, Urbana, IL 61801 USA.
[McFarquhar, Greg] Univ Illinois, Dept Atmospher Sci, Urbana, IL 61801 USA.
[Wohletz, Kenneth H.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Kieffer, SW (reprint author), Univ Illinois, Dept Geol, 1301 W Green St, Urbana, IL 61801 USA.
EM slkieffer@gmail.com
OI McFarquhar, Greg/0000-0003-0950-0135
FU NASA [NNX08AP78G]; Charles R. Walgreen, Jr. endowed funds
FX This research was funded by NASA Grant NNX08AP78G and the Charles R.
Walgreen, Jr. endowed funds to S.W.K.
NR 15
TC 14
Z9 14
U1 1
U2 13
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0019-1035
J9 ICARUS
JI Icarus
PD SEP
PY 2009
VL 203
IS 1
BP 238
EP 241
DI 10.1016/j.icarus.2009.05.011
PG 4
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 599HV
UT WOS:000277902900024
ER
PT J
AU Wong, PC
Leung, LR
Lu, N
Scott, MJ
Mackey, P
Foote, H
Correia, J
Taylor, ZT
Xu, JH
Unwin, SD
Sanfilippo, A
AF Wong, Pak Chung
Leung, L. Ruby
Lu, Ning
Scott, Michael J.
Mackey, Patrick
Foote, Harlan
Correia, James, Jr.
Taylor, Z. Todd
Xu, Jianhua
Unwin, Stephen D.
Sanfilippo, Antonio
TI Designing a Collaborative Visual Analytics Tool for Social and
Technological Change Prediction
SO IEEE COMPUTER GRAPHICS AND APPLICATIONS
LA English
DT Editorial Material
AB An interdisciplinary team designed and developed GreenOracle, a collaborative visual analytics tool for predicting global climate change's impact on US power grids and its implications for society and national security. These future scenarios provide critical assessments and information to help policymakers and stakeholders formulate a coherent, unified strategy toward shaping a safe, secure society.
C1 [Wong, Pak Chung; Taylor, Z. Todd] Pacific NW Natl Lab, Bldg Energy Codes Program, US Dept Energy, Richland, WA 99352 USA.
[Unwin, Stephen D.] Pacific NW Natl Lab, Risk & Decis Sci Grp, Richland, WA 99352 USA.
[Sanfilippo, Antonio] Pacific NW Natl Lab, Computat & Stat Analyt Div, Richland, WA 99352 USA.
RP Wong, PC (reprint author), Pacific NW Natl Lab, Bldg Energy Codes Program, US Dept Energy, Richland, WA 99352 USA.
EM pak.wong@pnl.gov; ruby.leung@pnl.gov; ning.lu@pnl.gov;
michael.scott@pnl.gov; patrick.mackey@pnl.gov; harlan.foote@pnl.gov;
james.correia@pnl.gov; todd.taylor@pnl.gov; jianhua.xu@pnl.gov;
stephen.unwin@pnl.gov; antonio.sanfilippo@pnl.gov
RI Correia, Jr, James/A-9455-2010; Sanfilippo, Antonio/B-6743-2016
OI Correia, Jr, James/0000-0003-1092-8999; Sanfilippo,
Antonio/0000-0001-7097-4562
NR 13
TC 2
Z9 2
U1 1
U2 2
PU IEEE COMPUTER SOC
PI LOS ALAMITOS
PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1314 USA
SN 0272-1716
EI 1558-1756
J9 IEEE COMPUT GRAPH
JI IEEE Comput. Graph. Appl.
PD SEP-OCT
PY 2009
VL 29
IS 5
BP 58
EP 68
DI 10.1109/MCG.2009.92
PG 11
WC Computer Science, Software Engineering
SC Computer Science
GA 490QU
UT WOS:000269517400008
PM 19927437
ER
PT J
AU Sotomayor, B
Montero, RS
Llorente, IM
Foster, I
AF Sotomayor, Borja
Montero, Ruben S.
Llorente, Ignacio M.
Foster, Ian
TI Virtual Infrastructure Management in Private and Hybrid Clouds
SO IEEE INTERNET COMPUTING
LA English
DT Article
DE cloud computing; distributed systems; virtual machines
AB One of the many definitions of "cloud" is that of an infrastructure-as-a-service (IaaS) system, in which IT infrastructure is deployed in a provider's data center as virtual machines. With IaaS clouds' growing popularity, tools and technologies are emerging that can transform an organization's existing infrastructure into a private or hybrid cloud. OpenNebula is an open source, virtual infrastructure manager that deploys virtualized services on both a local pool of resources and external IaaS clouds. Haizea, a resource lease manager, can act as a scheduling back end for OpenNebula, providing features not found in other cloud software or virtualization-based data center management software.
C1 [Sotomayor, Borja] Univ Chicago, Dept Comp Sci, Chicago, IL 60637 USA.
[Montero, Ruben S.] Univ Complutense Madrid, Dept Comp Architecture, E-28040 Madrid, Spain.
[Llorente, Ignacio M.] Univ Complutense Madrid, Distributed Syst Architecture Res Grp, E-28040 Madrid, Spain.
[Foster, Ian] Univ Chicago, Computat Inst, Chicago, IL 60637 USA.
[Foster, Ian] Argonne Natl Lab, Argonne, IL 60439 USA.
[Foster, Ian] Univ Chicago, Arthur Holly Compton Distinguished Serv, Chicago, IL 60637 USA.
RP Sotomayor, B (reprint author), Univ Chicago, Dept Comp Sci, Chicago, IL 60637 USA.
EM borja@cs.uchicago.edu; rubensm@dacya.ucm.es; llorente@dacya.ucm.es;
foster@anl.gov
RI Montero, Ruben/C-5346-2008; Martin Llorente, Ignacio/B-2093-2009; zong,
fico/H-4677-2011; Foster, Ian/A-1357-2007
OI Montero, Ruben/0000-0003-2591-1719; Martin Llorente,
Ignacio/0000-0001-6230-8180; Foster, Ian/0000-0003-2129-5269
FU Consejeria de Educacion de la Comunidad de Madrid; Fondo Europeo de
Desarrollo Regional (FEDER); Fondo Social Europeo (FSE)
[0505/TIC/000101]; Ministerio de Educacion y Ciencia [TIN2006-02806]; EU
[215605]; Reservoir; University of Chicago; US Department of Energy
[DE-AC02-06CH11357]; US National Science Foundation [509408]
FX We gratefully acknowledge the hard work of the Open-Nebula developers,
Javier Fontan and Tino Vazquez. We also thank our anonymous reviewers
for their insightful and detailed comments. Development of OpenNebula is
supported by Consejeria de Educacion de la Comunidad de Madrid, Fondo
Europeo de Desarrollo Regional (FEDER), and Fondo Social Europeo (FSE),
through BIOGRIDNET Research Program S-0505/TIC/000101; the Ministerio de
Educacion y Ciencia through research grant TIN2006-02806; and the EU
through Reservoir research grant number 215605. Haizea development is
supported by Reservoir, the University of Chicago, and the US Department
of Energy under contract DE-AC02-06CH11357. Early work on Haizea was
done in collaboration with Kate Keahey (Argonne National Laboratory) and
funded by US National Science Foundation grant 509408, "Virtual
Playgrounds."
NR 12
TC 288
Z9 294
U1 9
U2 83
PU IEEE COMPUTER SOC
PI LOS ALAMITOS
PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1314 USA
SN 1089-7801
J9 IEEE INTERNET COMPUT
JI IEEE Internet Comput.
PD SEP-OCT
PY 2009
VL 13
IS 5
BP 14
EP 22
DI 10.1109/MIC.2009.119
PG 9
WC Computer Science, Software Engineering
SC Computer Science
GA 493EK
UT WOS:000269716300004
ER
PT J
AU Keahey, K
Tsugawa, M
Matsunaga, A
Fortes, JAB
AF Keahey, Katarzyna
Tsugawa, Mauricio
Matsunaga, Andrea
Fortes, Jose A. B.
TI Sky Computing
SO IEEE INTERNET COMPUTING
LA English
DT Article
DE Clouds; Local area networks; Cloud computing; Security; Data mining;
Peer to peer computing; Standards; sky computing; cloud computing;
infrastructure-as-a-service
AB Infrastructure-as-a-service (IaaS) cloud computing is revolutionizing how we approach computing. Compute resource consumers can eliminate the expense inherent in acquiring, managing, and operating IT infrastructure and instead lease resources on a pay-as-you-go basis. IT infrastructure providers can exploit economies of scale to mitigate the cost of buying and operating resources and avoid the complexity required to manage multiple customer-specific environments and applications. The authors describe the context in which cloud computing arose, discuss its current strengths and shortcomings, and point to an emerging computing pattern it enables that they call sky computing.
C1 [Keahey, Katarzyna] Argonne Natl Lab, Distributed Syst Lab, Argonne, IL 60439 USA.
[Keahey, Katarzyna] Univ Chicago, Computat Inst, Chicago, IL 60637 USA.
[Tsugawa, Mauricio; Matsunaga, Andrea; Fortes, Jose A. B.] Univ Florida, Gainesville, FL 32611 USA.
RP Keahey, K (reprint author), Argonne Natl Lab, Distributed Syst Lab, Argonne, IL 60439 USA.
EM keahey@mcs.anl.gov; tsugawa@ufl.edu; ammatsun@ufl.edu; fortes@ufl.edu
RI zong, fico/H-4677-2011
FU The US National Science Foundation [CNS-0821622, CSR-527448,
OCI-0721867]; Bell-South Foundation; IBM
FX The US National Science Foundation partially supports this work under
grant numbers CNS-0821622, CSR-527448, and OCI-0721867. We also
acknowledge the support of the Bell-South Foundation and Shared
University Research grants from IBM. We are grateful to the Purdue Rosen
Center for Advanced Computing for making its Science Clouds resource
available for this research.
NR 7
TC 89
Z9 90
U1 5
U2 25
PU IEEE COMPUTER SOC
PI LOS ALAMITOS
PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1314 USA
SN 1089-7801
J9 IEEE INTERNET COMPUT
JI IEEE Internet Comput.
PD SEP-OCT
PY 2009
VL 13
IS 5
BP 43
EP 51
DI 10.1109/MIC.2009.94
PG 9
WC Computer Science, Software Engineering
SC Computer Science
GA 493EK
UT WOS:000269716300007
ER
PT J
AU Gupta, AA
Sathaye, J
AF Gupta, Arjun A.
Sathaye, Jayant
TI Electrifying India
SO IEEE POWER & ENERGY MAGAZINE
LA English
DT Article
C1 [Gupta, Arjun A.; Sathaye, Jayant] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Gupta, AA (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
NR 4
TC 2
Z9 2
U1 0
U2 1
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 1540-7977
J9 IEEE POWER ENERGY M
JI IEEE Power Energy Mag.
PD SEP-OCT
PY 2009
VL 7
IS 5
BP 53
EP 61
DI 10.1109/MPE.2009.933411
PG 9
WC Engineering, Electrical & Electronic
SC Engineering
GA 489SM
UT WOS:000269442700007
ER
PT J
AU Chakraborty, S
Simoes, MG
AF Chakraborty, Sudipta
Simoes, Marcelo G.
TI Experimental Evaluation of Active Filtering in a Single-Phase
High-Frequency AC Microgrid
SO IEEE TRANSACTIONS ON ENERGY CONVERSION
LA English
DT Article
DE Distributed generation (DG); high-frequency ac (HFAC); microgrid;
unified power quality conditioner (UPQC); universal active power line
conditioner (UPLC)
ID SERIES
AB Population growth in the world along with rapid technological expansion of the society demand efficient, economically viable, and environment-friendly energy conversion systems. The previous theoretical and simulation works have demonstrate that a 500-Hz single-phase high-frequency ac (HFAC) microgrid is a novel step toward integrating renewable energy sources in a distributed generation system. This paper goes one step further in describing the practical implementation of HFAC microgrid with active filters for a small 1-kW system. The protection issues for both the source and series converters are also addressed in this paper by developing a new but simple protection scheme. In the experimental microgrid system, a universal active power line conditioner (UPLC) and a unified power quality conditioner (UPQC) are incorporated to control the power flow and power quality, respectively. Controllers for both the UPQC and UPLC are developed based on the instantaneous single-phase p-q theory, and controlled pulsewidth modulated inverters are then implemented to synthesize the desired compensating waveforms. The experimental results obtained confirm that the HFAC microgrid is a practical and useful step toward successfully integrating distributed renewable energy sources ensuring the improved system utilization.
C1 [Chakraborty, Sudipta] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Simoes, Marcelo G.] Colorado Sch Mines, Golden, CO 80401 USA.
RP Chakraborty, S (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
EM sudipta.chakraborty@nrel.gov; msimoes@mines.edu
RI Simoes, Marcelo/J-9600-2012
OI Simoes, Marcelo/0000-0003-4124-061X
FU National Science Foundation (NSF) [TEC-00143-2008]
FX This work was supported by the National Science Foundation (NSF). Paper
no. TEC-00143-2008.
NR 15
TC 33
Z9 33
U1 0
U2 6
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0885-8969
EI 1558-0059
J9 IEEE T ENERGY CONVER
JI IEEE Trans. Energy Convers.
PD SEP
PY 2009
VL 24
IS 3
BP 673
EP 682
DI 10.1109/TEC.2009.2015998
PG 10
WC Energy & Fuels; Engineering, Electrical & Electronic
SC Energy & Fuels; Engineering
GA 489SN
UT WOS:000269442900013
ER
PT J
AU Cimini, D
Nasir, F
Westwater, ER
Payne, VH
Turner, DD
Mlawer, EJ
Exner, ML
Cadeddu, MP
AF Cimini, Domenico
Nasir, Francesco
Westwater, Ed R.
Payne, Vivienne H.
Turner, David D.
Mlawer, Eli J.
Exner, Michael L.
Cadeddu, Maria P.
TI Comparison of Ground-Based Millimeter-Wave Observations and Simulations
in the Arctic Winter
SO IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
LA English
DT Article; Proceedings Paper
CT 10th Specialist Meeting on Microwave Radiometry and Remote Sensing of
the Environment
CY MAR 11-14, 2008
CL Florence, ITALY
SP Ctr Telerilevamento Microonde, Inst Fisica Appl, GRSS, IEEE, IEEE Italy Sect, URSI, ThalesAlenia, Ente Cassa Risparmio Firenze
DE Arctic regions; atmospheric measurements; radiometry
ID PRECIPITABLE WATER-VAPOR; DRY BIAS; RADIOSONDE; RADIOMETER; MICROWAVE
AB During the Radiative Heating in Underexplored Bands Campaign (RHUBC), held in February-March 2007, three millimeter-wave radiometers were operated at the Atmospheric Radiation Measurement Program's site in Barrow, Alaska. These radiometers contain several channels located around the strong 183.31-GHz water vapor line, which is crucial for ground-based water-vapor measurements in very dry conditions, typical of the Arctic. Simultaneous radiosonde observations were carried out during conditions with very low integrated-water-vapor (IWV) content (< 2mm). Observations from the three instruments are compared, accounting for their different design characteristics. The overall agreement during RHUBC among the three instruments and between instruments and forward model is discussed quantitatively. In general, the instrument cross-validation performed for sets of channel pairs showed agreement within the total expected uncertainty. The consistency between instruments allows the determination of the IWV to within around 2% for these dry conditions. Comparisons between these data sets and forward-model simulations using radiosondes as input show spectral features in the brightness-temperature residuals, indicating some degree of inconsistency between the instruments and the forward model. The most likely cause of forward-model error is systematic errors in the radiosonde humidity profiles.
C1 [Cimini, Domenico; Nasir, Francesco] Univ Aquila, Ctr Excellence Remote Sensing & Modeling Severe W, I-67100 Laquila, Italy.
[Westwater, Ed R.] Univ Colorado, Dept Elect & Comp Engn, Ctr Environm Technol, Boulder, CO 80309 USA.
[Payne, Vivienne H.; Mlawer, Eli J.] Atmospher & Environm Res Inc, Lexington, MA 02421 USA.
[Turner, David D.] Univ Wisconsin, Ctr Space Sci & Engn, Madison, WI 53706 USA.
[Exner, Michael L.] Radiometr Corp, Boulder, CO 80301 USA.
[Cadeddu, Maria P.] Argonne Natl Lab, Argonne, IL 60439 USA.
RP Cimini, D (reprint author), Univ Aquila, Ctr Excellence Remote Sensing & Modeling Severe W, I-67100 Laquila, Italy.
EM nico.cimini@aquila.infn.it; ed.westwater@colorado.edu; vpayne@aer.com;
dturner@ssec.wisc.edu; emlawer@aer.com; exner@radiometrics.com;
mcadeddu@anl.gov
RI Payne, Vivienne/D-9713-2012; Cimini, Domenico/M-8707-2013
OI Cimini, Domenico/0000-0002-5962-223X
NR 19
TC 18
Z9 19
U1 0
U2 3
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 0196-2892
J9 IEEE T GEOSCI REMOTE
JI IEEE Trans. Geosci. Remote Sensing
PD SEP
PY 2009
VL 47
IS 9
BP 3098
EP 3106
DI 10.1109/TGRS.2009.2020743
PG 9
WC Geochemistry & Geophysics; Engineering, Electrical & Electronic; Remote
Sensing; Imaging Science & Photographic Technology
SC Geochemistry & Geophysics; Engineering; Remote Sensing; Imaging Science
& Photographic Technology
GA 486WA
UT WOS:000269230100011
ER
PT J
AU Deline, C
Choiniere, E
Gilchrist, BE
AF Deline, Christopher
Choiniere, Eric
Gilchrist, Brian E.
TI Assessment of Plasma-Flow Effect on Langmuir Triple-Probe Operation via
Kinetic Simulation
SO IEEE TRANSACTIONS ON PLASMA SCIENCE
LA English
DT Article
DE Flowing collisionless plasma; kinetic plasma model; Langmuir triple
probe; plasma diagnostics; plasma-sheath simulation
ID DIRECT-DISPLAY; ELECTROSTATIC-PROBE; PARAMETERS
AB A self-consistent steady-state 2-D kinetic plasma solver has been applied to the problem of Langmuir triple-probe plasma diagnostic measurements in a flowing collisionless plasma. The triple-probe response is simulated for ion Mach numbers M = 0-5 and probe radii r(p) = 1-90 lambda(D) (Debye length). Results indicate that a high probe radius and high ion Mach numbers more closely approximate the ideal thin-sheath triple-probe response. Small probe radii on the order of the Debye length can result in temperature errors of the ideal model greater than 70% for a probe bias of 20 V. An analytical approximation is described, approximating triple-probe measurement offsets given arbitrary probe bias and probe radius and ion Mach numbers 0 < M < 5. The fitting error from this analytical approximation is estimated at 2%-6%.
C1 [Gilchrist, Brian E.] Univ Michigan, Dept Elect Engn & Comp Sci, Radiat Lab, Ann Arbor, MI 48109 USA.
[Choiniere, Eric] MDA Space Miss, Montreal, PQ H9X 3R2, Canada.
[Gilchrist, Brian E.] Univ Michigan, Dept Atmospher Ocean & Space Sci, Space Phys Res Lab, Ann Arbor, MI 48109 USA.
RP Deline, C (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
EM cdeline@umich.edu; echoinie@umich.edu; brian.gilchrist@umich.edu
RI Deline, Christopher/K-5998-2013
OI Deline, Christopher/0000-0002-9867-8930
FU Ad Astra Rocket Company
FX The work of C. Deline was supported by Ad Astra Rocket Company.
NR 24
TC 1
Z9 1
U1 0
U2 2
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0093-3813
EI 1939-9375
J9 IEEE T PLASMA SCI
JI IEEE Trans. Plasma Sci.
PD SEP
PY 2009
VL 37
IS 9
BP 1843
EP 1849
DI 10.1109/TPS.2009.2025277
PN 2
PG 7
WC Physics, Fluids & Plasmas
SC Physics
GA 493EM
UT WOS:000269716600013
ER
PT J
AU Nemenman, I
Hlavacek, WS
Jiang, Y
Wall, ME
AF Nemenman, Ilya
Hlavacek, William S.
Jiang, Yi
Wall, Michael E.
TI Selected papers from the Second q-bio Conference on Cellular Information
Processing
SO IET SYSTEMS BIOLOGY
LA English
DT Editorial Material
C1 [Nemenman, Ilya] Columbia Univ, Sch Med, New York, NY 10027 USA.
[Jiang, Yi] Univ Notre Dame, Dept Math, Notre Dame, IN 46556 USA.
[Wall, Michael E.] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA.
[Wall, Michael E.] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
RP Nemenman, I (reprint author), Los Alamos Natl Lab, Comp Computat & Stat Sci Div, Los Alamos, NM 87545 USA.
OI Alexandrov, Ludmil/0000-0003-3596-4515; Hlavacek,
William/0000-0003-4383-8711
NR 2
TC 2
Z9 2
U1 1
U2 3
PU INST ENGINEERING TECHNOLOGY-IET
PI HERTFORD
PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD SG1 2AY, ENGLAND
SN 1751-8849
J9 IET SYST BIOL
JI IET Syst. Biol.
PD SEP
PY 2009
VL 3
IS 5
BP 297
EP 299
DI 10.1049/iet-syb.2009.9045
PG 3
WC Cell Biology; Mathematical & Computational Biology
SC Cell Biology; Mathematical & Computational Biology
GA 502TS
UT WOS:000270483700001
ER
PT J
AU Mugler, A
Ziv, E
Nemenman, I
Wiggins, CH
AF Mugler, A.
Ziv, E.
Nemenman, I.
Wiggins, C. H.
TI Quantifying evolvability in small biological networks
SO IET SYSTEMS BIOLOGY
LA English
DT Article; Proceedings Paper
CT 2nd q-bio Conference on Cellular Information Processing
CY AUG 06-09, 2008
CL St John Coll, Santa Fe, NM
HO St John Coll
ID STOCHASTIC GENE-EXPRESSION; TRANSCRIPTIONAL REGULATION; BIOCHEMICAL
NETWORKS; REGULATORY NETWORKS; ESCHERICHIA-COLI; NOISE; INFORMATION;
ROBUSTNESS; MOTIFS
AB The authors introduce a quantitative measure of the capacity of a small biological network to evolve. The measure is applied to a stochastic description of the experimental setup of Guet et al. (Science 2002, 296, pp. 1466), treating chemical inducers as functional inputs to biochemical networks and the expression of a reporter gene as the functional output. The authors take an information-theoretic approach, allowing the system to set parameters that optimise signal processing ability, thus enumerating each network's highest-fidelity functions. All networks studied are highly evolvable by the measure, meaning that change in function has little dependence on change in parameters. Moreover, each network's functions are connected by paths in the parameter space along which information is not significantly lowered, meaning a network may continuously change its functionality without completely losing it along the way. This property further underscores the evolvability of the networks.
C1 [Mugler, A.] Columbia Univ, Dept Phys, New York, NY 10027 USA.
[Ziv, E.] Columbia Univ, Coll Phys & Surg, New York, NY 10027 USA.
[Nemenman, I.] Los Alamos Natl Lab, Comp Computat & Stat Sci Div, Los Alamos, NM 87545 USA.
[Nemenman, I.] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
[Wiggins, C. H.] Columbia Univ, Dept Appl Phys & Appl Math, Ctr Computat Biol & Bioinformat, New York, NY 10027 USA.
RP Mugler, A (reprint author), Columbia Univ, Dept Phys, 538 W 120th St, New York, NY 10027 USA.
EM ajm2121@columbia.edu
OI Nemenman, Ilya/0000-0003-3024-4244
FU NCI NIH HHS [U54 CA121852-01A1, U54 CA121852, 1U54CA121852-01A1]; NEI
NIH HHS [5PN2EY016586-03, PN2 EY016586, PN2 EY016586-03]; NIGMS NIH HHS
[5P50GM071558-02, P50 GM071558-02, P50 GM071558]
NR 40
TC 4
Z9 4
U1 1
U2 4
PU INST ENGINEERING TECHNOLOGY-IET
PI HERTFORD
PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD SG1 2AY, ENGLAND
SN 1751-8849
EI 1751-8857
J9 IET SYST BIOL
JI IET Syst. Biol.
PD SEP
PY 2009
VL 3
IS 5
BP 379
EP 387
DI 10.1049/iet-syb.2008.0165
PG 9
WC Cell Biology; Mathematical & Computational Biology
SC Cell Biology; Mathematical & Computational Biology
GA 502TS
UT WOS:000270483700009
PM 21028928
ER
PT J
AU de Ronde, WH
Daniels, BC
Mugler, A
Sinitsyn, NA
Nemenman, I
AF de Ronde, W. H.
Daniels, B. C.
Mugler, A.
Sinitsyn, N. A.
Nemenman, I.
TI Mesoscopic statistical properties of multistep enzyme-mediated reactions
SO IET SYSTEMS BIOLOGY
LA English
DT Article; Proceedings Paper
CT 2nd q-bio Conference on Cellular Information Processing
CY AUG 06-09, 2008
CL St John Coll, Santa Fe, NM
HO St John Coll
ID SINGLE; KINETICS; MOLECULES
AB Enzyme-mediated reactions may proceed through multiple intermediate conformational states before creating a final product molecule, and one often wishes to identify such intermediate structures from observations of the product creation. In this study, the authors address this problem by solving the chemical master equations for various enzymatic reactions. A perturbation theory analogous to that used in quantum mechanics allows the determination of the first (< n >) and the second (sigma(2)) cumulants of the distribution of created product molecules as a function of the substrate concentration and the kinetic rates of the intermediate processes. The mean product flux V d < n >/dt (or 'dose-response' curve) and the Fano factor F = sigma(2)/< n > are both realistically measurable quantities, and whereas the mean flux can often appear the same for different reaction types, the Fano factor can be quite different. This suggests both qualitative and quantitative ways to discriminate between different reaction schemes, and the authors explore this possibility in the context of four sample multistep enzymatic reactions. Measuring both the mean flux and the Fano factor can not only discriminate between reaction types, but can also provide some detailed information about the internal, unobserved kinetic rates, and this can be done without measuring single-molecule transition events.
C1 [de Ronde, W. H.] FOM, Inst Atom & Mol Phys, NL-1098 SJ Amsterdam, Netherlands.
[Daniels, B. C.] Cornell Univ, Atom & Solid State Phys Lab, Ithaca, NY 14853 USA.
[Mugler, A.] Columbia Univ, Dept Phys, New York, NY 10027 USA.
[Sinitsyn, N. A.; Nemenman, I.] Los Alamos Natl Lab, Ctr Nonlinear Studies, Comp Computat & Stat Sci Div, Los Alamos, NM 87545 USA.
RP de Ronde, WH (reprint author), FOM, Inst Atom & Mol Phys, Kruislaan 407, NL-1098 SJ Amsterdam, Netherlands.
EM deronde@amolf.nl
RI Sinitsyn, nikolai/B-5617-2009; Daniels, Bryan/G-3615-2012;
OI Nemenman, Ilya/0000-0003-3024-4244
NR 17
TC 14
Z9 14
U1 1
U2 4
PU INST ENGINEERING TECHNOLOGY-IET
PI HERTFORD
PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD SG1 2AY, ENGLAND
SN 1751-8849
J9 IET SYST BIOL
JI IET Syst. Biol.
PD SEP
PY 2009
VL 3
IS 5
BP 429
EP 437
DI 10.1049/iet-syb.2008.0167
PG 9
WC Cell Biology; Mathematical & Computational Biology
SC Cell Biology; Mathematical & Computational Biology
GA 502TS
UT WOS:000270483700013
PM 21028932
ER
PT J
AU Chin, G
Singhal, M
Nakamura, G
Gurumoorthi, V
Freeman-Cadoret, N
AF Chin, George, Jr.
Singhal, Mudita
Nakamura, Grant
Gurumoorthi, Vidhya
Freeman-Cadoret, Natalie
TI Visual analysis of dynamic data streams
SO INFORMATION VISUALIZATION
LA English
DT Article
DE scientific visualization; dynamic visualization; dynamic data; real-time
data streams; visual contexts
ID HIERARCHICAL DATA; VISUALIZATION
AB For scientific data visualizations, real-time data streams present many interesting challenges when compared to static data. Real-time data are dynamic, transient, high-volume and temporal. Effective visualizations need to be able to accommodate dynamic data behavior as well as abstract and present the data in ways that make sense to and are usable by humans. The Visual Content Analysis of Real-Time Data Streams project at the Pacific Northwest National Laboratory is researching and prototyping dynamic visualization techniques and tools to help facilitate human understanding and comprehension of high-volume, real-time data. The general strategy of the project is to develop and evolve visual contexts that will organize and orient high-volume dynamic data in conceptual and perceptive views. The goal is to allow users to quickly grasp dynamic data in forms that are intuitive and natural without requiring intensive training in the use of specific visualization or analysis tools and methods. Thus far, the project has prototyped five different visualization prototypes that represent and convey dynamic data through human-recognizable contexts and paradigms such as hierarchies, relationships, time and geography. We describe the design considerations and unique features of these dynamic visualization prototypes as well as our findings in the exploration and evaluation of their use. Information Visualization (2009) 8, 212 - 229. doi: 10.1057/ivs.2009.18
C1 [Chin, George, Jr.; Singhal, Mudita; Nakamura, Grant; Gurumoorthi, Vidhya; Freeman-Cadoret, Natalie] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Chin, G (reprint author), Pacific NW Natl Lab, POB 999,MSIN,K7-90, Richland, WA 99352 USA.
FU US Department of Energy [DE-AC06-76RL01830]
FX The research described in this paper was conducted under the
Laboratory-Directed Research and Development (LDRD) Program at the
Pacific Northwest National Laboratory, a multiprogram national
laboratory operated by Battelle for the US Department of Energy under
Contract DE-AC06-76RL01830.
NR 32
TC 8
Z9 8
U1 1
U2 4
PU PALGRAVE MACMILLAN LTD
PI BASINGSTOKE
PA BRUNEL RD BLDG, HOUNDMILLS, BASINGSTOKE RG21 6XS, HANTS, ENGLAND
SN 1473-8716
J9 INFORM VISUAL
JI Inf. Vis.
PD FAL
PY 2009
VL 8
IS 3
BP 212
EP 229
DI 10.1057/ivs.2009.18
PG 18
WC Computer Science, Software Engineering
SC Computer Science
GA 497WC
UT WOS:000270093300007
ER
PT J
AU Costello, L
Grinstein, G
Plaisant, C
Scholtz, J
AF Costello, Loura
Grinstein, Georges
Plaisant, Catherine
Scholtz, Jean
TI Advancing user-centered evaluation of visual analytic environments
through contests
SO INFORMATION VISUALIZATION
LA English
DT Article
DE user-centered evaluation; synthetic data; metrics; visual analytics
AB In this paper, the authors describe the Visual Analytics Science and Technology (VAST) Symposium contests run in 2006 and 2007 and the VAST 2008 and 2009 challenges. These contests were designed to provide researchers with a better understanding of the tasks and data that face potential end users. Access to these end users is limited because of time constraints and the classified nature of the tasks and data. In that respect, the contests serve as an intermediary, with the metrics and feedback serving as measures of utility to the end users. The authors summarize the lessons learned and the future directions for VAST Challenges. Information Visualization (2009) 8, 230 - 238. doi: 10.1057/ivs.2009.16
C1 [Scholtz, Jean] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Costello, Loura; Grinstein, Georges] Univ Massachusetts, Lowell, MA 01854 USA.
[Plaisant, Catherine] Univ Maryland, Inst Adv Comp Studies, College Pk, MD 20742 USA.
RP Scholtz, J (reprint author), Pacific NW Natl Lab, POB 999,MSIN K7-22, Richland, WA 99352 USA.
EM loura.costello@gmail.com; grinstein@cs.uml.edu; plaisant@cs.umd.edu;
jean.scholtz@pnl.gov
RI Scholtz, Jean/E-8955-2013
FU National Visualization and Analytics Center(TM) (NVAC(TM)); Department
of Homeland Security; US Department of Energy [DE-AC05-76RL01830];
National Institute of Standards and Technology; National Science
Foundation (NSF)
FX The authors thank Heather Byrne and Adem Albayrak (our Research for
Undergraduate NSF students) for all their hard work for the VAST 2008
Challenge.
NR 10
TC 8
Z9 8
U1 0
U2 1
PU PALGRAVE MACMILLAN LTD
PI BASINGSTOKE
PA BRUNEL RD BLDG, HOUNDMILLS, BASINGSTOKE RG21 6XS, HANTS, ENGLAND
SN 1473-8716
J9 INFORM VISUAL
JI Inf. Vis.
PD FAL
PY 2009
VL 8
IS 3
BP 230
EP 238
DI 10.1057/ivs.2009.16
PG 9
WC Computer Science, Software Engineering
SC Computer Science
GA 497WC
UT WOS:000270093300008
ER
PT J
AU Demkowicz, MJ
Hoagland, RG
AF Demkowicz, M. J.
Hoagland, R. G.
TI SIMULATIONS OF COLLISION CASCADES IN Cu-Nb LAYERED COMPOSITES USING AN
EAM INTERATOMIC POTENTIAL
SO INTERNATIONAL JOURNAL OF APPLIED MECHANICS
LA English
DT Article
DE Composites; radiation; molecular dynamics
ID EMBEDDED-ATOM-METHOD; BOND-ORDER POTENTIALS; MOLECULAR-DYNAMICS; FCC
METALS; NANOLAYERED COMPOSITES; CU/NB MULTILAYERS; TERSOFF-BRENNER;
COPPER; TEMPERATURE; IMPURITIES
AB The embedded atom method (EAM) is used to construct an interatomic potential for modelling interfaces in Cu-Nb nanocomposites. Implementation of the Ziegler-Biersack-Littmark (ZBL) model for short-range interatomic interactions enables studies of response to ion bombardment. Collision cascades are modelled in fcc Cu, bcc Nb, and in Cu-Nb layered composites in the experimentally-observed Kurdjumov-Sachs (KS) orientation relation. The interfaces in these composites reduce the number of vacancies and interstitials created per keV of the primary knock-on atom (PKA) by 50-70% compared to fcc Cu or bcc Nb.
C1 [Demkowicz, M. J.; Hoagland, R. G.] Los Alamos Natl Lab, MST Struct Property Relat Grp 8, Los Alamos, NM 87545 USA.
[Demkowicz, M. J.] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA.
RP Demkowicz, MJ (reprint author), Los Alamos Natl Lab, MST Struct Property Relat Grp 8, POB 1663, Los Alamos, NM 87545 USA.
EM demkowicz@mit.edu
RI Hoagland, Richard/G-9821-2012
FU LANL
FX We thank S. G. Srivilliputhur for performing the VASP calculations used
in this work and to M. I. Baskes, P. M. Derlet and S. M. Valone for
useful discussions. This work was funded by the LANL Laboratory Directed
Research and Development (LDRD) Program and an LANL Director's
Postdoctoral Fellowship.
NR 55
TC 52
Z9 52
U1 3
U2 30
PU IMPERIAL COLLEGE PRESS
PI LONDON
PA 57 SHELTON ST, COVENT GARDEN, LONDON WC2H 9HE, ENGLAND
SN 1758-8251
J9 INT J APPL MECH
JI Int. J. Appl. Mech.
PD SEP
PY 2009
VL 1
IS 3
BP 421
EP 442
DI 10.1142/S1758825109000216
PG 22
WC Mechanics
SC Mechanics
GA V17EW
UT WOS:000207921500003
ER
PT J
AU Jun, S
Pendurti, S
Lee, IH
Kim, SY
Park, HS
Kim, YH
AF Jun, S.
Pendurti, S.
Lee, I. -H.
Kim, S. Y.
Park, H. S.
Kim, Y. -H.
TI ACTION-DERIVED AB INITIO MOLECULAR DYNAMICS
SO INTERNATIONAL JOURNAL OF APPLIED MECHANICS
LA English
DT Article
DE Molecular dynamics; least-action principle; ab initio calculations;
transition pathways; activation energy
AB Action-derived molecular dynamics (ADMD) is a numerical method to search for minimum-energy dynamic pathways on the potential-energy surface of an atomic system. The method is based on Hamilton's least-action principle and has been developed for problems of activated processes, rare events, and long-time simulations. In this paper, ADMD is further extended to incorporate ab initio total-energy calculations, which enables the detailed electronic analysis of transition states as well as the exploration of energy landscapes. Three numerical examples are solved to demonstrate the capability of this action-derived ab initio molecular dynamics (MD). The proposed approach is expected to circumvent the severe time-scale limitation of conventional ab intio MD simulations.
C1 [Jun, S.] Univ Wyoming, Dept Mech Engn, Dept 3295, Laramie, WY 82071 USA.
[Pendurti, S.] ASE Technologies Inc, Cincinnati, OH 45246 USA.
[Lee, I. -H.] KRISS, Taejon 305600, South Korea.
[Kim, S. Y.; Park, H. S.] Univ Colorado, Dept Mech Engn, Boulder, CO 80309 USA.
[Kim, Y. -H.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Jun, S (reprint author), Univ Wyoming, Dept Mech Engn, Dept 3295, 1000 E Univ Ave, Laramie, WY 82071 USA.
EM sjun@uwyo.edu
RI Lee, In-Ho/C-6235-2011; Jun, Sukky/B-5061-2009; Kim, Sung
Youb/F-4741-2010; Park, Harold/B-1525-2008
OI Lee, In-Ho/0000-0002-1001-6159; Park, Harold/0000-0001-5365-7776
FU NIH, National Centre for Research Resources [P20 RR016474]; DARPA
[HR0011-08-1-0047]; NSF [CMMI-0750395]
FX The work of SJ was made possible in part by NIH Grant # P20 RR016474
from the INBRE Program of the National Centre for Research Resources.
Its contents are solely the responsibility of the author and do not
necessarily represent the official views of NIH. SYK and HSP both
gratefully acknowledge the support of DARPA through Grant
HR0011-08-1-0047. The authors note that the content of this article does
not necessarily reflect the position or the policy of the government,
and that no official government endorsement of the results should be
inferred. HSP also acknowledges support from NSF Grant CMMI-0750395.
NR 34
TC 2
Z9 2
U1 0
U2 6
PU IMPERIAL COLLEGE PRESS
PI LONDON
PA 57 SHELTON ST, COVENT GARDEN, LONDON WC2H 9HE, ENGLAND
SN 1758-8251
EI 1758-826X
J9 INT J APPL MECH
JI Int. J. Appl. Mech.
PD SEP
PY 2009
VL 1
IS 3
BP 469
EP 482
DI 10.1142/S1758825109000277
PG 14
WC Mechanics
SC Mechanics
GA V17EW
UT WOS:000207921500005
ER
PT J
AU Li, TL
Lee, JH
Gao, YF
AF Li, T. L.
Lee, J. H.
Gao, Y. F.
TI AN APPROXIMATE FORMULATION OF THE EFFECTIVE INDENTATION MODULUS OF
ELASTICALLY ANISOTROPIC FILM-ON-SUBSTRATE SYSTEMS
SO INTERNATIONAL JOURNAL OF APPLIED MECHANICS
LA English
DT Article
DE Indentation modulus; film-on-substrate system; anisotropic elasticity
ID RAPIDLY OSCILLATORY FUNCTIONS; BLUNTED CRACK-TIP; MECHANICAL-PROPERTIES;
DETERMINING HARDNESS; TANGENTIAL CONTACT; ADHESIVE CONTACT;
MICRO-PLASTICITY; SURFACE STEPS; THIN-FILMS; NANOINDENTATION
AB Frictionless contact between an arbitrarily-shaped rigid indenter and an elastically anisotropic film-on-substrate system can be regarded as being superposed incrementally by a flat-ended punch contact, the shape and size of which are determined by the indenter shape, indentation depth (or applied load) and elastic properties of film and substrate. For typical nanoindentation applications, the indentation modulus can thus be approximated from the response of a circular contact with pressure of the form of [1 - (r/a)(2)](-1/2), where r is the radial coordinate and a is the contact radius. The surface-displacement Green's function for elastically anisotropic film-on-substrate system is derived in closed-form by using the Stroh formalism and the two-dimensional Fourier transform. The predicted dependence of the effective modulus on the ratio of film thickness to contact radius agrees well with detailed finite element simulations. Implications in evaluating film modulus by nanoindentation technique are also discussed.
C1 [Li, T. L.; Lee, J. H.; Gao, Y. F.] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
[Gao, Y. F.] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA.
RP Gao, YF (reprint author), Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
EM ygao7@utk.edu
RI Gao, Yanfei/F-9034-2010; Li, Tianlei/F-8865-2010
OI Gao, Yanfei/0000-0003-2082-857X; Li, Tianlei/0000-0003-1962-9290
FU National Science Foundation [CMMI-0800168]; Center for Materials
Processing at University of Tennessee (UT); Joint Institute of Advanced
Materials at UT; Korean Government (MOEHRD) [KRF-352-D00001]; Division
of Materials Sciences and Engineering, Office of Base Energy Sciences,
US Department of Energy with UT-Battle, LLC [DE-AC05-00OR22725]
FX The authors acknowledge supports from the National Science Foundation
CMMI-0800168 (managed by Dr. Ken Chong), the Center for Materials
Processing at University of Tennessee (UT), and a graduate fellowship
from the Joint Institute of Advanced Materials at UT. The work of JHL
was partly supported by the Korea Research Foundation Grant
(KRF-352-D00001) funded by the Korean Government (MOEHRD). Research at
the Oak Ridge National Laboratory was sponsored by the Division of
Materials Sciences and Engineering, Office of Base Energy Sciences, US
Department of Energy, under Contract DE-AC05-00OR22725 with UT-Battle,
LLC.
NR 34
TC 8
Z9 8
U1 0
U2 9
PU IMPERIAL COLLEGE PRESS
PI LONDON
PA 57 SHELTON ST, COVENT GARDEN, LONDON WC2H 9HE, ENGLAND
SN 1758-8251
J9 INT J APPL MECH
JI Int. J. Appl. Mech.
PD SEP
PY 2009
VL 1
IS 3
BP 515
EP 525
DI 10.1142/S1758825109000241
PG 11
WC Mechanics
SC Mechanics
GA V17EW
UT WOS:000207921500008
ER
PT J
AU Yamamoto, H
Zhang, K
Karasaki, K
Marui, A
Uehara, H
Nishikawa, N
AF Yamamoto, Hajime
Zhang, Keni
Karasaki, Kenzi
Marui, Atsunao
Uehara, Hitoshi
Nishikawa, Noriaki
TI Numerical investigation concerning the impact of CO2 geologic storage on
regional groundwater flow
SO INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
LA English
DT Article
DE CO2 storage; Parallel computation; Large-scale simulation; Groundwater
pressure; Tokyo Bay; Kanto Plain; Earth Simulator
ID SCALE
AB Large-scale storage of carbon dioxide in saline aquifers may cause considerable pressure perturbation and brine migration in deep rock formations, which may have a significant influence on the regional groundwater system. With the help of parallel computing techniques, we conducted a comprehensive, large-scale numerical simulation Of CO2 geologic storage that predicts not only CO2 migration, but also its impact on regional groundwater flow. As a case study, a hypothetical industrial-scale CO2 injection in Tokyo Bay, which is surrounded by the most heavily industrialized area in Japan, was considered, and the impact Of CO2 injection on near-surface aquifers was investigated, assuming relatively high seal-layer permeability (higher than 10 microdarcy). A regional hydrogeological model with an area of about 60 km x 70 km around Tokyo Bay was discretized into about 10 million gridblocks. To solve the high-resolution model efficiently, we used a parallelized multiphase flow simulator TOUGH2-MP/ECO2N on a world-class high performance supercomputer in Japan, the Earth Simulator. In this simulation, CO2 was injected into a storage aquifer at about 1 km depth under Tokyo Bay from 10 wells, at a total rate of 10 million tons/year for 100 years. Through the model, we can examine regional groundwater pressure buildup and groundwater migration to the land surface. The results suggest that even if containment of CO2 plume is ensured, pressure buildup on the order of a few bars can occur in the shallow confined aquifers over extensive regions, including urban inlands. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Yamamoto, Hajime] Taisei Corp, Totsuka Ku, Yokohama, Kanagawa 2450051, Japan.
[Zhang, Keni; Karasaki, Kenzi] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Marui, Atsunao] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058567, Japan.
[Uehara, Hitoshi; Nishikawa, Noriaki] Japan Agcy Marine Earth Sci & Technol, Kanagawa Ku, Yokohama, Kanagawa 2360001, Japan.
RP Yamamoto, H (reprint author), Taisei Corp, Totsuka Ku, 344-1 Nase Cho, Yokohama, Kanagawa 2450051, Japan.
EM hajime.yamamoto@sakura.taisei.co.jp
FU Ministry of Education, Culture, Sports, Science, and Technology (MEXT)
of Japan
FX We greatly appreciate Satoshi Imamura, Tomoyuki Aoki, and Toyokazu Ogawa
at Taisei Corporation, and Karsten Pruess at Lawrence Berkeley National
Laboratory, for encouragement and helpful discussions. Our sincere
thanks also to Shinichi Nanai at Taisei Corporation, Satoru Shingu and
Yuichi Hirokawa at the Japan Agency for Marine-Earth Science and
Technology (JAMSTEC), and to Takaaki Noguchi at NEC System Technologies
Ltd., for their extensive help and support in the use of the Earth
Simulator. The authors also wish to thank Katsuji Sasaki and Akira
Hyuuga at Suncoh Consultant Inc for providing us the digital data set
associated with the geological formations of the Kanto Plain. We thank
to Daniel S. Hawkes for English editing. Thanks are also due to two
anonymous reviewers for their constructive suggestions for improving the
quality of the manuscript. The use of the Earth Simulator was supported
by the "Open Advanced Facilities Initiative for Innovation (Strategic
Use by Industry)" funded by the Ministry of Education, Culture, Sports,
Science, and Technology (MEXT) of Japan.
NR 24
TC 66
Z9 70
U1 5
U2 23
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1750-5836
J9 INT J GREENH GAS CON
JI Int. J. Greenh. Gas Control
PD SEP
PY 2009
VL 3
IS 5
BP 586
EP 599
DI 10.1016/j.ijggc.2009.04.007
PG 14
WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels; Engineering,
Environmental
SC Science & Technology - Other Topics; Energy & Fuels; Engineering
GA 483FY
UT WOS:000268949300009
ER
PT J
AU Price, PN
Oldenburg, CM
AF Price, Phillip N.
Oldenburg, Curtis M.
TI The consequences of failure should be considered in siting geologic
carbon sequestration projects
SO INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
LA English
DT Article
DE Geologic carbon sequestration; Site selection; Risk assessment;
Regulation
ID DISPOSAL; STORAGE; WASTE
AB Geologic carbon sequestration is the injection of anthropogenic CO(2) into deep geologic formations where the CO(2) is intended to remain indefinitely. If successfully implemented, geologic carbon sequestration will have little or no impact on terrestrial ecosystems aside from the mitigation of climate change. However, failure of a geologic carbon sequestration site, such as large-scale leakage Of CO(2) into a potable groundwater aquifer, could cause impacts that would require costly remediation measures. Governments are attempting to develop regulations for permitting geologic carbon sequestration sites to ensure their safety and effectiveness. At present, these regulations focus largely on decreasing the probability of failure. In this paper we propose that regulations for the siting of early geologic carbon sequestration projects should emphasize limiting the consequences of failure because consequences are easier to quantify than failure probability. Published by Elsevier Ltd.
C1 [Oldenburg, Curtis M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA.
[Price, Phillip N.] Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA.
RP Oldenburg, CM (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA.
EM cmoldenburg@lbl.gov
RI Oldenburg, Curtis/L-6219-2013
OI Oldenburg, Curtis/0000-0002-0132-6016
FU Lawrence Berkeley National Laboratory under Department of Energy
[DE-AC02-05CH11231]
FX This work was supported by Lawrence Berkeley National Laboratory under
Department of Energy Contract No. DE-AC02-05CH11231. We thank Chin-Fu
Tsang (LBNL) for constructive review comments, and Daniel S. Hawkes
(LBNL) for help with the presentation.
NR 13
TC 10
Z9 10
U1 0
U2 1
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1750-5836
J9 INT J GREENH GAS CON
JI Int. J. Greenh. Gas Control
PD SEP
PY 2009
VL 3
IS 5
BP 658
EP 663
DI 10.1016/j.ijggc.2009.03.002
PG 6
WC GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Energy & Fuels; Engineering,
Environmental
SC Science & Technology - Other Topics; Energy & Fuels; Engineering
GA 483FY
UT WOS:000268949300017
ER
PT J
AU Sultan, K
DeGroot, CT
Straatman, AG
Gallego, NC
Hangan, H
AF Sultan, K.
DeGroot, C. T.
Straatman, A. G.
Gallego, N. C.
Hangan, H.
TI Thermal characterization of porous graphitic foam - Convection in
impinging flow
SO INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
LA English
DT Article
DE Graphitic foam; Convective heat transfer enhancement
ID CARBON FOAMS
AB An experimental study has been undertaken to explore the convective heat transfer enhancement that can be achieved in an impinging airflow arrangement by bonding layers of graphitic foam to a heated metal substrate. The effects of foam protrusion, foam thickness and foam properties were explored in this study. The results show that surfaces with a layer of foam protruding upward with open edges had the highest convective enhancement over that of the bare substrate under the same conditions. For the protruding cases. convective enhancements of 30-70% were observed for airflows ranging from 7-11 m/s, for foam thicknesses in the range 2-10 mm. The highest enhancements were observed for foam specimens with the most open, interconnected void structure. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Sultan, K.; DeGroot, C. T.; Straatman, A. G.] Univ Western Ontario, Dept Mech & Mat Engn, London, ON N6A 5B9, Canada.
[Gallego, N. C.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
[Hangan, H.] Univ Western Ontario, Dept Civil & Environm Engn, Boundary Layer Wing Tunnel Lab, London, ON N6A 5B9, Canada.
RP Straatman, AG (reprint author), Univ Western Ontario, Dept Mech & Mat Engn, London, ON N6A 5B9, Canada.
EM astraatman@eng.uwo.ca
RI DeGroot, Christopher/D-1150-2011;
OI DeGroot, Christopher/0000-0002-2069-8253; Gallego,
Nidia/0000-0002-8252-0194
FU DOE Office of Freedom-CAR and Vehicle Technology Program
[DE-AC05-000R22725]
FX Authors a,c wish to acknowledge the financial support
received by the Natural Sciences and Engineering Research Council of
Canada. Author b wishes to acknowledge support received from
the Advanced Automotive Materials Program, DOE Office of Freedom-CAR and
Vehicle Technology Program, under Contract DE-AC05-000R22725 with
UT-Battelle, LLC.
NR 10
TC 11
Z9 11
U1 0
U2 3
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0017-9310
J9 INT J HEAT MASS TRAN
JI Int. J. Heat Mass Transf.
PD SEP
PY 2009
VL 52
IS 19-20
BP 4296
EP 4301
DI 10.1016/j.ijheatmasstransfer.2009.03.070
PG 6
WC Thermodynamics; Engineering, Mechanical; Mechanics
SC Thermodynamics; Engineering; Mechanics
GA 483FO
UT WOS:000268948000017
ER
PT J
AU Yang, JH
Panchal, CB
Doctor, RD
AF Yang, Jianhong
Panchal, C. B.
Doctor, Richard D.
TI CaBr2 hydrolysis for HBr production using a direct sparging contactor
SO INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
LA English
DT Article
DE Calcium bromide; Hydrolysis; Thermochemical hydrogen; Kinetics
AB The calcium-bromine cycle being investigated is a novel continuous hybrid cycle for hydrogen production employing both heat and electricity. Calcium bromide (CaBr2) hydrolysis generates hydrogen bromide (HBr) which is electrolyzed to produce hydrogen. The CaBr2 hydrolysis at 1050 K (777 degrees C) is endothermic with the heat of reaction delta G(T) = 181.5 KJ/mol (43.38 kcal/mol) and the Gibbs free energy change is positive at 99.6 kJ/ mol (23.81 kcal/mol). What makes this hydrolysis reaction attractive is both its rate and that well over half the thermodynamic requirements for water-splitting heat of reaction of delta G(T) = 285.8 KJ/mol (68.32 kcal/mol) are supplied at this stage using heat rather than electricity. Molten-phase calcium bromide reactors may overcome the technical barriers associated with earlier hydrolysis approaches using supported solid-phase calcium bromide studied in the Japanese UT-3 cycle. Before constructing the experiment two design concepts were evaluated using COMSOL (TM) multi-physics models; 1) the first involved sparging steam into a calcium-bromide melt, while 2) the second considered a "spray-dryer" contactor spraying molten calcium bromide counter-currently to upward-flowing steam. A recent paper describes this work [6]. These studies indicated that sparging steam into a calcium-bromide melt is more feasible than spraying molten calcium bromide droplets into steam. Hence, an experimental sparging hydrolysis reactor using a mullite tube (ID 70 mm) was constructed capable of holding 0.3-0.5 kg (1.5-2.5 X 10(-3) kg mol) CaBr2 forming a melt with a maximum 0.08 m (8 cm) depth. Sparging steam at a steam rate of 0.02 mol/mol of CaBr2 per minute (1.2-2.3 x 10(-5) kg/s), into this molten bath promptly yielded HBr in a stable operation that converted up to 25% of the calcium bromide. The kinetic constant derived from the experimental data was 2.17 x 10(-12) kmol s(-1) m(-2) MPa-1 for the hydrolysis reaction. The conversion rate is highly dependent on melt depth and the design for steam sparging. This experimental data provides a basis for designing a larger-scale sparging hydrolysis reactor for the calcium bromide thermochemical cycle where the endothermic heat of reaction can be effectively supplied by heat transfer coils embedded in the melt. (C) 2009 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
C1 [Yang, Jianhong; Panchal, C. B.; Doctor, Richard D.] Argonne Natl Lab, Argonne, IL 60439 USA.
RP Doctor, RD (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM rdoctor@anl.gov
FU U.S. Department of Energy's (DOE's) Nuclear Energy Research Initiative;
Argonne National Laboratory under DOE [DE-AC02-06CH11357]
FX This effort was sponsored by the U.S. Department of Energy's (DOE's)
Nuclear Energy Research Initiative. The investigations described herein
were conducted by Argonne National Laboratory under DOE Contract No.
DE-AC02-06CH11357.
NR 8
TC 2
Z9 2
U1 0
U2 2
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0360-3199
J9 INT J HYDROGEN ENERG
JI Int. J. Hydrog. Energy
PD SEP
PY 2009
VL 34
IS 18
BP 7585
EP 7591
DI 10.1016/j.ijhydene.2009.05.132
PG 7
WC Chemistry, Physical; Electrochemistry; Energy & Fuels
SC Chemistry; Electrochemistry; Energy & Fuels
GA 504ND
UT WOS:000270622800004
ER
PT J
AU Ahluwalia, RK
Hua, TQ
Peng, JK
AF Ahluwalia, R. K.
Hua, T. Q.
Peng, J. K.
TI Automotive storage of hydrogen in alane
SO INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
LA English
DT Article
DE Hydrogen storage; Metal hydrides; Alane; Transportation
ID VEHICLES
AB Although alane (AlH(3)) has many interesting properties as a hydrogen storage material, it cannot be regenerated on-board a vehicle. One way of overcoming this limitation is to formulate an alane slurry that can be easily loaded into a fuel tank and removed for off-board regeneration. In this paper, we analyze the performance of an on-board hydrogen storage system that uses alane slurry as the hydrogen carrier. A model for the on-board storage system was developed to analyze the AlH(3) decomposition kinetics, heat transfer requirements, stability, startup energy and time, H(2) buffer requirements, storage efficiency, and hydrogen storage capacities. The results from the model indicate that reactor temperatures higher than 200 degrees C are needed to decompose alane at reasonable liquid hourly space velocities, i.e., > 60 h(-1). At the system level, a gravimetric capacity of 4.2 wt% usable hydrogen and a volumetric capacity of 50 g H(2)/L may be achievable with a 70% solids slurry. Under optimum conditions, similar to 80% of the H(2) stored in the slurry may be available for the fuel cell engine. The model indicates that H(2) loss is limited by the decomposition kinetics rather than by the rate of heat transfer from the ambient to the slurry tank. (C) 2009 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
C1 [Ahluwalia, R. K.; Hua, T. Q.; Peng, J. K.] Argonne Natl Lab, Argonne, IL 60439 USA.
RP Ahluwalia, RK (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM walia@anl.gov
FU U.S. Department of Energy's office of Energy Efficiency and Renewable
Energy; office of Hydrogen, Fuel Cells; Technology Development Manager;
Brookhaven National Laboratory; Argonne National Laboratory; U.S.
Department of Energy Office of Science laboratory; UChicago Argonne, LLC
[DE-AC02-06CH11357]
FX This work was supported by the U.S. Department of Energy's office of
Energy Efficiency and Renewable Energy. Dr. Sunita Satyapal of the
office of Hydrogen, Fuel Cells, and infrastructure Technologies was the
Technology Development Manager for this study. The authors thank Drs.
Jason Graetz and James Wegrzyn of Brookhaven National Laboratory and Dr.
Romesh Kumar of Argonne National Laboratory for many useful discussions
and helpful suggestions. Argonne National Laboratory, a U.S. Department
of Energy Office of Science laboratory, is operated by UChicago Argonne,
LLC, under Contract No. DE-AC02-06CH11357.
NR 17
TC 24
Z9 24
U1 0
U2 10
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0360-3199
J9 INT J HYDROGEN ENERG
JI Int. J. Hydrog. Energy
PD SEP
PY 2009
VL 34
IS 18
BP 7731
EP 7740
DI 10.1016/j.ijhydene.2009.07.013
PG 10
WC Chemistry, Physical; Electrochemistry; Energy & Fuels
SC Chemistry; Electrochemistry; Energy & Fuels
GA 504ND
UT WOS:000270622800021
ER
PT J
AU Watrous, MG
Delmore, JE
AF Watrous, Matthew G.
Delmore, James E.
TI Metal dicarbides as intermediate species in thermal ion formation
mechanisms
SO INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
LA English
DT Article
DE Lanthanide element; Actinide element; Resin bead; Thermal ionization
source
ID EARTH-CARBON SYSTEMS; RESIN BEAD; SAMARIUM DICARBIDE; MASS-SPECTROMETRY;
ISOTOPIC ANALYSIS; KNUDSEN CELL; VAPORIZATION; THERMODYNAMICS;
PLUTONIUM; URANIUM
AB Lanthanide elements (lanthanum to lutetium) and actinide elements (uranium and plutonium) adsorbed onto resin beads and mounted on rhenium filaments were studied as thermal ionization sources. Temperatures at which these ion sources gave maximum intensities were measured for each of these elements. The temperature trends correlate with the dissociation energies of the corresponding metal dicarbide compounds. The metal dicarbide functions as a carrier to take the lanthanide and actinide elements to higher temperatures than would be attainable otherwise. This results in release of the atomic species at a higher temperature where ionization probability is significantly increased. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Watrous, Matthew G.; Delmore, James E.] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
RP Watrous, MG (reprint author), Idaho Natl Lab, POB 1625, Idaho Falls, ID 83415 USA.
EM matthew.watrous@inl.gov
FU U.S. Department of Energy [DE-AC07-05ID14517]
FX This work is supported by the U.S. Department of Energy, under DOE Idaho
Operations Office Contract DE-AC07-05ID14517. Accordingly, the U.S.
Government retains a nonexclusive, royalty-free license to publish or
reproduce the published form of this contribution, or allow others to do
so, for U.S. Government purposes.
NR 22
TC 3
Z9 3
U1 3
U2 7
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1387-3806
J9 INT J MASS SPECTROM
JI Int. J. Mass Spectrom.
PD SEP 1
PY 2009
VL 286
IS 1
BP 7
EP 10
DI 10.1016/j.ijms.2009.06.003
PG 4
WC Physics, Atomic, Molecular & Chemical; Spectroscopy
SC Physics; Spectroscopy
GA 489OU
UT WOS:000269430700002
ER
PT J
AU Luo, YX
Zhu, SJ
Hamilton, JH
Ramayya, AV
Goodin, C
Li, K
Che, XL
Hwang, JK
Lee, IY
Jiang, Z
Ter-Akopian, GM
Daniel, AV
Stoyer, MA
Donangelo, R
Frauendorf, S
Dimitrov, V
Zhang, JY
Cole, JD
Stone, NJ
Rasmussen, JO
AF Luo, Y. X.
Zhu, S. J.
Hamilton, J. H.
Ramayya, A. V.
Goodin, C.
Li, K.
Che, X. L.
Hwang, J. K.
Lee, I. Y.
Jiang, Z.
Ter-Akopian, G. M.
Daniel, A. V.
Stoyer, M. A.
Donangelo, R.
Frauendorf, S.
Dimitrov, V.
Zhang, Jing-Ye
Cole, J. D.
Stone, N. J.
Rasmussen, J. O.
TI ODD-PARITY BANDS OF Ru-108,Ru-110,Ru-112
SO INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS
LA English
DT Article
DE Chiral doubling; Ru-108,Ru-110,Ru-112; Cf-252; fission fragment; gamma
spectra
ID NEUTRON-RICH NUCLEI; SPONTANEOUS FISSION; ISOTOPES; CHIRALITY; ARRAYS
AB Two similar sets of odd-parity bands are observed in each of three even-even neighbors, Ru-108,Ru-110,Ru-112, from a study of prompt spontaneous-fission gamma rays at Gammasphere. A careful study of the odd-parity levels of these nuclei shows evidence for the features of chiral doubling. Comparisons are made with reported other candidates for chiral doubling.
C1 [Luo, Y. X.; Zhu, S. J.; Hamilton, J. H.; Ramayya, A. V.; Goodin, C.; Li, K.; Hwang, J. K.; Lee, I. Y.; Jiang, Z.] Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA.
[Luo, Y. X.; Zhu, S. J.; Rasmussen, J. O.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Zhu, S. J.; Che, X. L.] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China.
[Ter-Akopian, G. M.; Daniel, A. V.] JINR, Dubna, Russia.
[Stoyer, M. A.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Donangelo, R.] Univ Fed Rio de Janeiro, BR-68528 Rio De Janeiro, Brazil.
[Frauendorf, S.; Dimitrov, V.] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA.
[Frauendorf, S.] Forschungszentrum Rossendorf EV, Inst Strahlenphys, D-01314 Dresden, Germany.
[Zhang, Jing-Ye] Univ Tennessee, Dept Phys, Knoxville, TN 37996 USA.
[Cole, J. D.] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
[Stone, N. J.] Univ Oxford, Dept Phys, Oxford OX1 3PU, England.
RP Luo, YX (reprint author), Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA.
RI Jiang, Zhuo/E-3110-2010; Sistemas Complexos, Inct/J-8597-2013
FU U. S. Department of Energy [DE-FG05-88 ER40 407, DE-AC03-76SF0 0098,
W-7405-ENG48, DE-AC07-99 ID13727]; DOE [DE-FG02-95ER40093,
DE-FG02-96ER40983]; Major State Basic Research Development Program
[2007CB815000]; Chinese National Natural Science Foundation [10575057,
10775078]; University of Tennessee, Vanderbilt
FX The work at Vanderbilt University, Lawrence Berkeley National
Laboratory, Lawrence Livermore National Laboratory, and Idaho National
Engineering and Environmental Laboratory are supported by U. S.
Department of Energy under Grant No. DE-FG05-88 ER40 407 and Contract
Nos. DE-AC03-76SF0 0098, W-7405-ENG48, and DE-AC07-99 ID13727. Work at
Notre Dame University is supported by DOE grant No. DE-FG02-95ER40093.
Work at University of Tennessee is supported by DOE grant No.
DE-FG02-96ER40983. The work at Tsinghua University in Beijing is
supported by the Major State Basic Research Development Program under
Contract No. 2007CB815000 and the Chinese National Natural Science
Foundation under Grant No. 10575057 and 10775078. The Joint Institute
for Heavy Ion Research is supported by its members, University of
Tennessee, Vanderbilt, and the U. S. DOE. The authors are indebted for
the use of 252Cf to the office of Basic Energy Sciences, U.
S. Department of Energy, through the transplutonium element production
facilities at the Oak Ridge National Laboratory.
NR 22
TC 11
Z9 12
U1 0
U2 6
PU WORLD SCIENTIFIC PUBL CO PTE LTD
PI SINGAPORE
PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE
SN 0218-3013
J9 INT J MOD PHYS E
JI Int. J. Mod. Phys. E-Nucl. Phys.
PD SEP
PY 2009
VL 18
IS 8
BP 1697
EP 1716
DI 10.1142/S0218301309013646
PG 20
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 508SW
UT WOS:000270957100002
ER
PT J
AU Zhu, SJ
Luo, YX
Hamilton, JH
Ramayya, AV
Che, XL
Jiang, Z
Hwang, JK
Wood, JL
Stoyer, MA
Donangelo, R
Cole, JD
Goodin, C
Rasmussen, JO
AF Zhu, S. J.
Luo, Y. X.
Hamilton, J. H.
Ramayya, A. V.
Che, X. L.
Jiang, Z.
Hwang, J. K.
Wood, J. L.
Stoyer, M. A.
Donangelo, R.
Cole, J. D.
Goodin, C.
Rasmussen, J. O.
TI EVEN-PARITY BANDS OF Ru-108,Ru-110,Ru-112
SO INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS
LA English
DT Article
DE Even-parity bands; triaxial deformation; band crossing; quasi-gamma
bands
ID HIGH-SPIN STRUCTURE; COLLECTIVE STRUCTURE; EQUILIBRIUM SHAPES; NUCLEI;
ISOTOPES; ROTATION; FISSION; RU-112
AB High-spin, even-parity bands in neutron-rich Ru-108,Ru-110,Ru-112 nuclei were reinvestigated and considerably expanded by measuring many-fold prompt.-ray coincidence events following the spontaneous fission of Cf-252 with Gammasphere. Our high statistics data allow us to detect weaker transitions and bands not previously published. Also, gamma branching ratios, which are important for theory, are carefully measured from all levels. In Ru-110, we find a doubling of levels for both ground and quasi-gamma bands above the 8(+) levels. There are likely two-phonon quasi-gamma bands in Ru-110,Ru-112, as well as a bandhead level in Ru-108. The odd-even spin energy band staggering observed in the quasi-gamma bands in Ru-108,Ru-110,Ru-112 and the doubling of levels in Ru-110 present a challenge to theory.
C1 [Zhu, S. J.; Che, X. L.; Jiang, Z.] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China.
[Zhu, S. J.; Luo, Y. X.; Hamilton, J. H.; Ramayya, A. V.; Hwang, J. K.; Goodin, C.] Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA.
[Zhu, S. J.] Oak Ridge Natl Lab, Joint Inst Heavy Ion Res, Oak Ridge, TN 37830 USA.
[Luo, Y. X.; Rasmussen, J. O.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Wood, J. L.] Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA.
[Stoyer, M. A.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Donangelo, R.] Univ Fed Rio de Janeiro, BR-68528 Rio De Janeiro, RJ, Brazil.
[Cole, J. D.] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
RP Zhu, SJ (reprint author), Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China.
EM zhushj@mail.tsinghua.edu.cn
RI Jiang, Zhuo/E-3110-2010; Sistemas Complexos, Inct/J-8597-2013;
OI Hwang, Jae-Kwang/0000-0002-4100-3473
FU Chinese National Natural Science Foundation [10775078, 10575057]; Major
State Basic Research Development Program [2007CB815005]; U. S.
Department of Energy [DE-FG05-88ER40407, DE-AC03-76SF00098,
W-7405-ENG48, DE-AC07-99ID13727]; Tennessee, Vanderbilt
FX The work at Tsinghua University in Beijing is supported by the Chinese
National Natural Science Foundation under Grant No. 10775078, 10575057
and the Major State Basic Research Development Program 2007CB815005. The
work at Vanderbilt University, Lawrence Berkeley National Laboratory,
Lawrence Livermore National Laboratory, and Idaho National Laboratory
are supported, respectively, by U. S. Department of Energy under Grant
No. DE-FG05-88ER40407 and Contract Nos. DE-AC03-76SF00098, W-7405-ENG48,
and DE-AC07-99ID13727. The Joint Institute for Heavy Ion Research is
supported by its members, U. of Tennessee, Vanderbilt, and the U. S.
DOE. The authors are indebted for the use of 252Cf to the
office of Basic Energy Sciences, U. S. Department of Energy, through the
transplutonium element production facilities at the Oak Ridge National
Laboratory.
NR 34
TC 15
Z9 18
U1 0
U2 5
PU WORLD SCIENTIFIC PUBL CO PTE LTD
PI SINGAPORE
PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE
SN 0218-3013
J9 INT J MOD PHYS E
JI Int. J. Mod. Phys. E-Nucl. Phys.
PD SEP
PY 2009
VL 18
IS 8
BP 1717
EP 1739
DI 10.1142/S0218301309013798
PG 23
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 508SW
UT WOS:000270957100003
ER
PT J
AU Allen, MA
Lauro, FM
Williams, TJ
Burg, D
Siddiqui, KS
De Francisci, D
Chong, KWY
Pilak, O
Chew, HH
De Maere, MZ
Ting, L
Katrib, M
Ng, C
Sowers, KR
Galperin, MY
Anderson, IJ
Ivanova, N
Dalin, E
Martinez, M
Lapidus, A
Hauser, L
Land, M
Thomas, T
Cavicchioli, R
AF Allen, Michelle A.
Lauro, Federico M.
Williams, Timothy J.
Burg, Dominic
Siddiqui, Khawar S.
De Francisci, Davide
Chong, Kevin W. Y.
Pilak, Oliver
Chew, Hwee H.
De Maere, Matthew Z.
Ting, Lily
Katrib, Marilyn
Ng, Charmaine
Sowers, Kevin R.
Galperin, Michael Y.
Anderson, Iain J.
Ivanova, Natalia
Dalin, Eileen
Martinez, Michele
Lapidus, Alla
Hauser, Loren
Land, Miriam
Thomas, Torsten
Cavicchioli, Ricardo
TI The genome sequence of the psychrophilic archaeon, Methanococcoides
burtonii: the role of genome evolution in cold adaptation
SO ISME JOURNAL
LA English
DT Article
DE archaea; cold adaptation; genome plasticity; Methanococcoides burtonii;
psychrophile
ID HORIZONTAL GENE-TRANSFER; METHANOSARCINA-BARKERI; ANTARCTIC ARCHAEON;
SP-NOV.; SKAN-BAY; ACE LAKE; METHANOCALDOCOCCUS-JANNASCHII;
METHANOGENIUM-FRIGIDUM; H-2-USING METHANOGEN; M METHYLTRANSFERASE
AB Psychrophilic archaea are abundant and perform critical roles throughout the Earth's expansive cold biosphere. Here we report the first complete genome sequence for a psychrophilic methanogenic archaeon, Methanococcoides burtonii. The genome sequence was manually annotated including the use of a five-tiered evidence rating (ER) system that ranked annotations from ER1 (gene product experimentally characterized from the parent organism) to ER5 (hypothetical gene product) to provide a rapid means of assessing the certainty of gene function predictions. The genome is characterized by a higher level of aberrant sequence composition (51%) than any other archaeon. In comparison to hyper/thermophilic archaea, which are subject to selection of synonymous codon usage, M. burtonii has evolved cold adaptation through a genomic capacity to accommodate highly skewed amino-acid content, while retaining codon usage in common with its mesophilic Methanosarcina cousins. Polysaccharide biosynthesis genes comprise at least 3.3% of protein coding genes in the genome, and Cell wall, membrane, envelope biogenesis COG genes are overrepresented. Likewise, signal transduction (COG category T) genes are overrepresented and M. burtonii has a high 'IQ' (a measure of adaptive potential) compared to many methanogens. Numerous genes in these two overrepresented COG categories appear to have been acquired from epsilon-and delta-Proteobacteria, as do specific genes involved in central metabolism such as a novel B form of aconitase. Transposases also distinguish M. burtonii from other archaea, and their genomic characteristics indicate they have an important role in evolving the M. burtonii genome. Our study reveals a capacity for this model psychrophile to evolve through genome plasticity (including nucleotide skew, horizontal gene transfer and transposase activity) that enables adaptation to the cold, and to the biological and physical changes that have occurred over the last several thousand years as it adapted from a marine to an Antarctic lake environment. The ISME Journal (2009) 3, 1012-1035; doi:10.1038/ismej.2009.45; published online 30 April 2009
C1 [Allen, Michelle A.; Lauro, Federico M.; Williams, Timothy J.; Burg, Dominic; Siddiqui, Khawar S.; De Francisci, Davide; Chong, Kevin W. Y.; Pilak, Oliver; Chew, Hwee H.; De Maere, Matthew Z.; Ting, Lily; Katrib, Marilyn; Ng, Charmaine; Thomas, Torsten; Cavicchioli, Ricardo] Univ New S Wales, Sch Biotechnol & Biomol Sci, Sydney, NSW 2052, Australia.
[Sowers, Kevin R.] Univ Maryland, Ctr Marine Biotechnol, Inst Biotechnol, Baltimore, MD 21202 USA.
[Thomas, Torsten] Univ New S Wales, Ctr Marine Bioinnovat, Sydney, NSW 2052, Australia.
[Galperin, Michael Y.] NCBI, Natl Lib Med, NIH, Bethesda, MD USA.
[Anderson, Iain J.; Ivanova, Natalia; Dalin, Eileen; Martinez, Michele; Lapidus, Alla] Joint Genome Inst, Dept Energy, Walnut Creek, CA USA.
[Hauser, Loren; Land, Miriam] Oak Ridge Natl Lab, Oak Ridge, TN USA.
RP Cavicchioli, R (reprint author), Univ New S Wales, Sch Biotechnol & Biomol Sci, Sydney, NSW 2052, Australia.
EM R.Cavicchioli@unsw.edu.au
RI Land, Miriam/A-6200-2011; Hauser, Loren/H-3881-2012; Burg,
Dominic/A-8136-2013; Galperin, Michael/B-5859-2013; Cavicchioli,
Ricardo/D-4341-2013; Lapidus, Alla/I-4348-2013;
OI Land, Miriam/0000-0001-7102-0031; Burg, Dominic/0000-0002-9957-3233;
Galperin, Michael/0000-0002-2265-5572; Cavicchioli,
Ricardo/0000-0001-8989-6402; Lapidus, Alla/0000-0003-0427-8731; De
Francisci, Davide/0000-0002-4893-9821; Lauro,
Federico/0000-0002-8373-1014
FU US Department of Energy's Office of Science, Biological and
Environmental Research Program; University of California; Lawrence
Berkeley National Laboratory [DE-AC0205CH11231]; Lawrence Livermore
National Laboratory [DE-AC52-07NA27344]; Los Alamos National Laboratory
[DE-AC0206NA25396, DE-AC05-00OR22725]; US Department of Energy's Office
of Science, Biological and Environmental Research Program
[DE-FG02-07ER64502]; National Science Foundation, Division of Cellular
and Bioscience [MCB0110762]
FX The Australian contingent was supported by funding from the Australian
Research Council. The work of IJA, NI, ED, MM, AL, LH and ML was
performed under the auspices of the US Department of Energy's Office of
Science, Biological and Environmental Research Program, and by the
University of California, Lawrence Berkeley National Laboratory under
Contract No. DE-AC0205CH11231, Lawrence Livermore National Laboratory
under Contract No. DE-AC52-07NA27344, Los Alamos National Laboratory
under Contract No. DE-AC0206NA25396, and Los Alamos National Laboratory
under Contract No. DE-AC05-00OR22725. The work of KRS was supported by
funding from the US Department of Energy's Office of Science, Biological
and Environmental Research Program Grant No. DE-FG02-07ER64502 and the
National Science Foundation, Division of Cellular and Bioscience Grant
No. MCB0110762. MYG was supported by the NIH Intramural Research Program
at the National Library of Medicine.
NR 83
TC 63
Z9 318
U1 4
U2 32
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1751-7362
EI 1751-7370
J9 ISME J
JI ISME J.
PD SEP
PY 2009
VL 3
IS 9
BP 1012
EP 1035
DI 10.1038/ismej.2009.45
PG 24
WC Ecology; Microbiology
SC Environmental Sciences & Ecology; Microbiology
GA 491XY
UT WOS:000269618300003
PM 19404327
ER
PT J
AU Ivanshin, VA
Litvinova, TO
Sukhanov, AA
Sokolov, DA
Aronson, MC
AF Ivanshin, V. A.
Litvinova, T. O.
Sukhanov, A. A.
Sokolov, D. A.
Aronson, M. C.
TI Electron spin resonance in the Heusler alloy YbRh2Pb
SO JETP LETTERS
LA English
DT Article
AB An electron spin resonance (ESR) signal was observed in a concentrated Kondo lattice, Heusler alloy YbRh2Pb. It is attributed to the combined effect of the 4f local magnetic moments of Yb3+ and conduction electrons. It is shown that the significant broadening and disappearance of the ESR line at temperatures above 20 K is caused by the processes of the spin-lattice relaxation of the Yb3+ ions through the first excited Stark doublet with an activation energy Delta a parts per thousand 73.5 K. A comparison of the ESR data for YbRh2Pb and some other undoped intermetallic compounds based on ytterbium, cerium, and europium indicates that hybridized electronic states occurring as the result of hybridization between the localized 4f electrons and the collectivized conduction electrons constitute a fundamentally new source of ESR.
C1 [Ivanshin, V. A.; Litvinova, T. O.] Kazan VI Lenin State Univ, Kazan 420008, Russia.
[Sukhanov, A. A.] Russian Acad Sci, Kazan Sci Ctr, Zavoisky Phys Tech Inst, Kazan 420029 29, Russia.
[Sokolov, D. A.] Univ Edinburgh, Sch Phys, Edinburgh EH9 3JZ, Midlothian, Scotland.
[Aronson, M. C.] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA.
[Aronson, M. C.] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA.
[Aronson, M. C.] US DOE, Ames Lab, Ames, IA 50011 USA.
[Aronson, M. C.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Sokolov, D. A.] Univ Edinburgh, CSEC, Edinburgh EH9 3JZ, Midlothian, Scotland.
RP Ivanshin, VA (reprint author), Kazan VI Lenin State Univ, Kazan 420008, Russia.
EM Vladimir.Ivanshin@ksu.ru
RI Sokolov, D/G-7755-2011; Sukhanov, Andrey/M-7814-2016
OI Sukhanov, Andrey/0000-0001-8927-3715
NR 20
TC 8
Z9 8
U1 1
U2 3
PU MAIK NAUKA/INTERPERIODICA/SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013-1578 USA
SN 0021-3640
EI 1090-6487
J9 JETP LETT+
JI Jetp Lett.
PD SEP
PY 2009
VL 90
IS 2
BP 116
EP 119
DI 10.1134/S0021364009140070
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 495TK
UT WOS:000269917700007
ER
PT J
AU Ho, CK
O'Rear, L
AF Ho, Clifford K.
O'Rear, Leslie, Jr.
TI Evaluation of solute mixing in water distribution pipe junctions
SO JOURNAL AMERICAN WATER WORKS ASSOCIATION
LA English
DT Article
ID DISTRIBUTION-SYSTEMS; CROSS JUNCTIONS
AB The potential for contamination of water distribution systems is a growing public health concern. To mitigate potential contamination events, accurate prediction of solute transport through water distribution pipe networks is crucial. However, most models of flow and transport through pipe networks assume contaminants mix instantaneously and completely at pipe junctions. In many cases, this leads to a poor representation of the actual mixing behavior, consequently leading to potentially inaccurate contaminant source detection and vulnerability and risk assessments.
This article presents data comparisons and new models for mixing In several different junction configurations-a new bulk-advective mixing (BAM) model, EPANET-BAM, an augmented version of the widely used US Environmental Protection Agency EPANET software; and an even newer BAM-WRAP model, not yet implemented in EPANET-BAM. These new models provide more accurate assessments of solute/contaminant concentrations throughout the water distribution network, which will be useful for risk and exposure assessments to protect public health.-SB
C1 [O'Rear, Leslie, Jr.] Sandia Natl Labs, Livermore, CA 94550 USA.
EM ckho@sandia.gov
NR 15
TC 8
Z9 8
U1 1
U2 6
PU AMER WATER WORKS ASSOC
PI DENVER
PA 6666 W QUINCY AVE, DENVER, CO 80235 USA
SN 0003-150X
J9 J AM WATER WORKS ASS
JI J. Am. Water Work Assoc.
PD SEP
PY 2009
VL 101
IS 9
BP 116
EP +
PG 13
WC Engineering, Civil; Water Resources
SC Engineering; Water Resources
GA 500RG
UT WOS:000270321200012
ER
PT J
AU Armstrong, A
Li, Q
Bogart, KHA
Lin, Y
Wang, GT
Talin, AA
AF Armstrong, A.
Li, Q.
Bogart, K. H. A.
Lin, Y.
Wang, G. T.
Talin, A. A.
TI Deep level optical spectroscopy of GaN nanorods
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
DE conduction bands; deep levels; energy gap; gallium compounds; III-V
semiconductors; MOCVD; nanostructured materials; nanotechnology;
photoemission; photoluminescence; wide band gap semiconductors
ID CURRENT COLLAPSE; NANOWIRES; CARBON; PHOTOCONDUCTIVITY;
HETEROSTRUCTURES; SEMICONDUCTORS; TRANSISTORS; CAPACITANCE; DEFECTS;
EPITAXY
AB Deep level defects in GaN nanorods (NRs) grown by metal organic chemical vapor deposition were studied using deep level optical spectroscopy (DLOS) and microphotoluminescence (mu-PL). DLOS determines the absolute optical ionization energy, discerns majority versus minority carrier photoemission, and has sensitivity to nonradiative defect centers. These are important aspects of deep level spectroscopy for NRs that are not obtainable using luminescence techniques alone. Deep level defects were observed via DLOS at E(c)-2.81 eV, E(c)-1.77 eV, and E(c)-3.19 eV, where E(c) is the conduction band minimum. The mu-PL spectra revealed a dominant defect band peaked near 2.19 eV. The E(c)-2.81 eV band gap state and the 2.19 eV PL peak can be attributed to the same defect center within a one-dimensional configuration-coordinate model. The NR DLOS spectra are compared to reports for thin film GaN, and possible physical origins of the deep level defects are discussed.
C1 [Armstrong, A.; Li, Q.; Bogart, K. H. A.; Lin, Y.; Wang, G. T.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Talin, A. A.] Sandia Natl Labs, Livermore, CA 94551 USA.
RP Armstrong, A (reprint author), Sandia Natl Labs, POB 5800,MS-1086, Albuquerque, NM 87185 USA.
EM aarmstr@sandia.gov
RI Wang, George/C-9401-2009
OI Wang, George/0000-0001-9007-0173
FU U. S. Department of Energy's National Nuclear Security Administration
[DEAC04- 94AL85000]
FX This work was supported by the Laboratory Directed Research and
Development program at Sandia National Laboratories, with partial
support from the Division of Materials Science and Engineering, Office
of Basic Energy Sciences, U. S. Department of Energy. Sandia is a
multiprogram laboratory operated by Sandia Corporation, a Lockheed
Martin Co., for the U. S. Department of Energy's National Nuclear
Security Administration under Contract No. DEAC04- 94AL85000.
NR 31
TC 24
Z9 24
U1 0
U2 15
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD SEP 1
PY 2009
VL 106
IS 5
AR 053712
DI 10.1063/1.3211317
PG 7
WC Physics, Applied
SC Physics
GA 494WN
UT WOS:000269850300062
ER
PT J
AU Choi, SG
Levi, DH
Martinez-Tomas, C
Sanjose, VM
AF Choi, S. G.
Levi, D. H.
Martinez-Tomas, C.
Munoz Sanjose, V.
TI Above-bandgap ordinary optical properties of GaSe single crystal
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
DE critical points; dielectric function; ellipsometry; energy gap; gallium
compounds; III-VI semiconductors; refractive index
ID GALLIUM SELENIDE; INTERBAND-TRANSITIONS; INDIUM SELENIDE; INSE; VI;
DIFFERENTIATION; NONLINEARITIES; SEMICONDUCTORS; REFLECTIVITY;
MODULATION
AB We report above-bandgap ordinary optical properties of epsilon-phase GaSe single crystal. Reference-quality pseudodielectric function <>=<>+i <> and pseudorefractive index << N(E)>>=<< n(E)>>+i << k(E)>> spectra were measured by spectroscopic ellipsometry from 0.73 to 6.45 eV at room temperature for the light polarization perpendicular to the optic axis (E perpendicular to c). The <> spectrum exhibited several interband-transition critical-point structures. Analysis of second-energy derivatives calculated numerically from the measured data yielded the critical-point energy values.
C1 [Choi, S. G.; Levi, D. H.] Natl Renewable Energy Lab, Natl Ctr Photovolta, Golden, CO 80007 USA.
[Martinez-Tomas, C.; Munoz Sanjose, V.] Univ Valencia, Dept Fis Aplicada & Electromagnetismo, E-46100 Burjassot, Spain.
RP Choi, SG (reprint author), Natl Renewable Energy Lab, Natl Ctr Photovolta, Golden, CO 80007 USA.
EM sukgeun.choi@nrel.gov
RI Choi, Sukgeun/J-2345-2014; Martinez-Tomas, M. Carmen/L-6455-2014;
Munoz-Sanjose, Vicente/L-6206-2014
OI Martinez-Tomas, M. Carmen/0000-0003-1100-355X; Munoz-Sanjose,
Vicente/0000-0002-3482-6957
FU U. S. Department of Energy [DE-AC36-08GO28308]
FX This work was supported by the U. S. Department of Energy under Contract
No. DE-AC36-08GO28308. The work done at the Universitat de Valencia was
supported in part by the Spanish Project No. MAT2007-66129.
NR 39
TC 18
Z9 18
U1 1
U2 28
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD SEP 1
PY 2009
VL 106
IS 5
AR 053517
DI 10.1063/1.3211967
PG 4
WC Physics, Applied
SC Physics
GA 494WN
UT WOS:000269850300037
ER
PT J
AU Hopkins, PE
Stewart, DA
AF Hopkins, Patrick E.
Stewart, Derek A.
TI Contribution of d-band electrons to ballistic transport and scattering
during electron-phonon nonequilibrium in nanoscale Au films using an ab
initio density of states
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
DE ab initio calculations; ballistic transport; Boltzmann equation;
conduction bands; density functional theory; electron mean free path;
electronic density of states; electronic structure; electron-phonon
interactions; gold; metallic thin films; pseudopotential methods
ID BRILLOUIN-ZONE INTEGRATIONS; HEAT-CONDUCTION; INTERBAND-TRANSITIONS;
SPIN DYNAMICS; METALS; NICKEL; GOLD; NANOPARTICLES; TEMPERATURE;
RELAXATION
AB Electron-interface scattering during electron-phonon nonequilibrium in thin films creates another pathway for electron system energy loss as characteristic lengths of thin films continue to decrease. As power densities in nanodevices increase, excitations of electrons from sub-conduction-band energy levels will become more probable. These sub-conduction-band electronic excitations significantly affect the material's thermophysical properties. In this work, the role of d-band electronic excitations is considered in electron energy transfer processes in thin Au films. The electronic structure and density of states for gold are calculated using a plane wave pseudopotential density function approach. In thin films with thicknesses less than the electron mean free path, ballistic electron transport leads to electron-interface scattering. The ballistic component of electron transport is studied by a ballistic-diffusive approximation of the Boltzmann transport equation with input from ab initio calculations. The effects of d-band excitations on electron-interface energy transfer are analyzed during electron-phonon nonequilibrium after short pulsed laser heating in thin films.
C1 [Hopkins, Patrick E.] Sandia Natl Labs, Engn Sci Ctr, Albuquerque, NM 87185 USA.
[Stewart, Derek A.] Cornell Univ, Cornell Nanoscale Sci & Technol Facil, Ithaca, NY 14853 USA.
RP Hopkins, PE (reprint author), Sandia Natl Labs, Engn Sci Ctr, POB 5800, Albuquerque, NM 87185 USA.
EM pehopki@sandia.gov
RI Stewart, Derek/B-6115-2008;
OI Stewart, Derek/0000-0001-7355-2605
FU U. S. Department of Energy's National Nuclear Security Administration
[DEAC04- 94AL85000]
FX P. E. H. is greatly appreciative for funding from the LDRD program
office through the Sandia National Laboratories Harry S. Truman
Fellowship. Sandia is a multiprogram laboratory operated by Sandia
Corporation, a LockheedMartin Co., for the U. S. Department of Energy's
National Nuclear Security Administration under Contract No. DEAC04-
94AL85000. First principles calculations for Au were performed on the
Intel Cluster at the Cornell Nanoscale Facility, which is part of the
National Nanotechnology Infrastructure Network funded by the National
Science Foundation.
NR 51
TC 10
Z9 11
U1 0
U2 18
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD SEP 1
PY 2009
VL 106
IS 5
AR 053512
DI 10.1063/1.3211310
PG 9
WC Physics, Applied
SC Physics
GA 494WN
UT WOS:000269850300032
ER
PT J
AU Ishimaru, M
Zhang, YW
Weber, WJ
AF Ishimaru, Manabu
Zhang, Yanwen
Weber, William J.
TI Ion-beam-induced chemical disorder in GaN
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
DE amorphous semiconductors; bonds (chemical); gallium compounds; III-V
semiconductors; ion beam effects; ion-surface impact; nanostructured
materials; surface structure; transmission electron microscopy; wide
band gap semiconductors
ID IRRADIATION; BOMBARDMENT; SI
AB Atomistic structures of high-energy ion irradiated GaN were examined using transmission electron microscopy (TEM). Single crystalline GaN substrates were irradiated at cryogenic temperatures with 2 MeV Au(2+) ions to a fluence of 7.35x10(15) Au/cm(2). Cross-sectional TEM observations revealed that damaged layers consisting of amorphous and nanocrystalline phases are formed at the surface and buried depth of the as-irradiated GaN substrate. Atomic radial distribution functions of the amorphous/polynanocrystalline regions showed that not only heteronuclear Ga-N bonds but also homonuclear Ga-Ga bonds exist within the first coordination shell. It was found that the ratio of heteronuclear-to-homonuclear bonds, i.e., the degree of chemical disorder, is different between the surface and buried damaged layers. The alternation of chemical disorder was attributed to the difference in the defect formation processes between these layers.
C1 [Ishimaru, Manabu] Osaka Univ, Inst Sci & Ind Res, Osaka 5670047, Japan.
[Zhang, Yanwen; Weber, William J.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Ishimaru, M (reprint author), Osaka Univ, Inst Sci & Ind Res, Osaka 5670047, Japan.
EM ishimaru@sanken.osaka-u.ac.jp
RI Weber, William/A-4177-2008
OI Weber, William/0000-0002-9017-7365
FU Division of Materials Science and Engineering, Office of Basic Energy
Sciences, U. S. Department of Energy
FX We would like to thank Professor Hirotsu for his establishment of a
precise quantitative analytical technique of electron diffraction
intensities for a radial distribution function analysis. TEM
observations were performed at the Comprehensive Analysis Center, ISIR,
Osaka University. This work was partially supported by the Division of
Materials Science and Engineering, Office of Basic Energy Sciences, U.
S. Department of Energy, and a portion of the research was performed
using EMSL, a national scientific user facility sponsored by the
Department of Energy's Office of Biological and Environmental Research
and located at Pacific Northwest National Laboratory.
NR 24
TC 14
Z9 14
U1 1
U2 5
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD SEP 1
PY 2009
VL 106
IS 5
AR 053513
DI 10.1063/1.3212555
PG 4
WC Physics, Applied
SC Physics
GA 494WN
UT WOS:000269850300033
ER
PT J
AU Musaev, OR
Midgley, AE
Wrobel, JM
Yan, J
Kruger, MB
AF Musaev, O. R.
Midgley, A. E.
Wrobel, J. M.
Yan, J.
Kruger, M. B.
TI Fractal character of titania nanoparticles formed by laser ablation
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
DE fractals; laser ablation; nanofabrication; nanoparticles; Raman spectra;
titanium compounds; transmission electron microscopy; X-ray diffraction
ID RAMAN-SCATTERING; TIO2 NANOCRYSTALS; SIZE DISTRIBUTION; PHASE EXPLOSION;
METAL COLLOIDS; TEMPERATURE; DIMENSION; CATALYSTS; SURFACE; FILMS
AB Titania nanoparticles were fabricated by laser ablation of polycrystalline rutile in water at room temperature. The resulting nanoparticles were analyzed with x-ray diffraction, Raman spectroscopy, and transmission electron microscopy. The electron micrograph image of deposited nanoparticles demonstrates fractal properties.
C1 [Musaev, O. R.; Midgley, A. E.; Wrobel, J. M.; Kruger, M. B.] Univ Missouri, Dept Phys, Kansas City, MO 64110 USA.
[Yan, J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
RP Musaev, OR (reprint author), Univ Missouri, Dept Phys, Kansas City, MO 64110 USA.
EM wrobelJ@umkc.edu
FU NSF [DMR-0605493]; NSF COMPRES [EAR01-35554]; University of Missouri
Research Board; UMKC Faculty Research Grant; U. S.-DOE
[DE-AC02-05CH11231]; Director, Office of Science, Office of Basic Energy
Sciences, of the U. S. Department of Energy [DE-AC02-10886]
FX We thank Dr. V. Dusevich (UMKC) for producing the TEM images and Dr. P.
Burke (University of Western Australia) for providing the program for
fractal analysis. This work was supported by NSF Contract No.
DMR-0605493, NSF COMPRES Contract No. EAR01-35554, by the University of
Missouri Research Board and the UMKC Faculty Research Grant, by U.
S.-DOE Contract No. DE-AC02-10886 to NSLS and by the Advanced Light
Source, which is supported by the Director, Office of Science, Office of
Basic Energy Sciences, of the U. S. Department of Energy under Contract
No. DE-AC02-05CH11231.
NR 41
TC 6
Z9 6
U1 0
U2 7
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD SEP 1
PY 2009
VL 106
IS 5
AR 054306
DI 10.1063/1.3208058
PG 3
WC Physics, Applied
SC Physics
GA 494WN
UT WOS:000269850300104
ER
PT J
AU Root, S
Asay, JR
AF Root, S.
Asay, J. R.
TI Loading path and rate dependence of inelastic deformation: x-cut quartz
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
DE compressibility; deformation; elasticity; silicon compounds; stress
effects
ID SHOCK-WAVE COMPRESSION
AB Shockless compression experiments were performed on x-cut quartz single crystals to examine the effect of loading path and rate on the inelastic behavior. The Lagrangian wave velocity and stress were determined from the measured particle velocities and compared to the previously measured elastic values. The data show that x-cut quartz remains essentially elastic up to stresses greater than 10 GPa during ramp loading, but that the elastic yield behavior is dependent on the sample thickness. These results indicate that the elastic response of x-cut quartz is dependent on the loading path, rate, and sample thickness.
C1 [Root, S.; Asay, J. R.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Root, S (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM sroot@sandia.gov
FU United States Department of Energy's National Nuclear Security
Administration [DE-AC04-94AL85000]
FX The authors thank Sandia's DICE Facility for assembling targets and
performing the experiments. Sandia is a multiprogram laboratory operated
by Sandia Corporation, a Lockheed Martin Company, for the United States
Department of Energy's National Nuclear Security Administration under
Contract No. DE-AC04-94AL85000.
NR 13
TC 1
Z9 1
U1 1
U2 1
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD SEP 1
PY 2009
VL 106
IS 5
AR 056104
DI 10.1063/1.3213365
PG 3
WC Physics, Applied
SC Physics
GA 494WN
UT WOS:000269850300146
ER
PT J
AU Sun, B
Winey, JM
Gupta, YM
Hooks, DE
AF Sun, B.
Winey, J. M.
Gupta, Y. M.
Hooks, D. E.
TI Determination of second-order elastic constants of cyclotetramethylene
tetranitramine (beta-HMX) using impulsive stimulated thermal scattering
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
DE acoustic wave velocity; Brillouin spectra; elastic constants; organic
compounds
ID PENTAERYTHRITOL; CRYSTALS; INITIATION
AB The second-order elastic constants for cyclotetramethylene tetranitramine (beta-HMX) single crystals were determined using the impulsive stimulated thermal scattering (ISTS) method. Despite the low symmetry of these crystals, the complete set of 13 elastic constants were determined accurately from acoustic velocity measurements using samples cut parallel to three different crystal planes. Our acoustic velocities are consistent with the limited sound speed data available from ultrasonic measurements. However, significant differences are observed between the elastic constants determined from our experiments and those obtained previously using Brillouin scattering. Our results demonstrate the usefulness and efficiency of the ISTS method for determining the full set of elastic constants of low-symmetry molecular crystals, including energetic crystals.
C1 [Sun, B.; Winey, J. M.; Gupta, Y. M.] Washington State Univ, Inst Shock Phys, Pullman, WA 99164 USA.
[Sun, B.; Winey, J. M.; Gupta, Y. M.] Washington State Univ, Dept Phys, Pullman, WA 99164 USA.
[Hooks, D. E.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Sun, B (reprint author), Washington State Univ, Inst Shock Phys, Pullman, WA 99164 USA.
EM mwiney@wsu.edu
NR 24
TC 19
Z9 19
U1 0
U2 7
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0021-8979
EI 1089-7550
J9 J APPL PHYS
JI J. Appl. Phys.
PD SEP 1
PY 2009
VL 106
IS 5
AR 053505
DI 10.1063/1.3211927
PG 5
WC Physics, Applied
SC Physics
GA 494WN
UT WOS:000269850300025
ER
PT J
AU Svec, M
Chab, V
Tringides, MC
AF Svec, Martin
Chab, Vladimir
Tringides, Michael C.
TI Resolving the coverage puzzle of the Pb/Si(111)-root 7x root 3 phase
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
DE lead; scanning tunnelling microscopy; silicon; stoichiometry; surface
phase transformations; surface structure
ID DEVILS STAIRCASE; ISING-MODEL; SI(111); PB; TEMPERATURES; PB/SI(111)
AB The dense Pb/Si(111)-alpha-root 3 x root 3 has been extensively studied over the last 20 years with scanning tunneling microscopy (STM) and surface diffraction to determine its structure and its phase transformations with temperature T and coverage theta. Two apparently incompatible models have been proposed for the structure and have been debated in the literature. One model was based on a coverage assignment theta=1 ML. The other model was based on assigning coverage in the range 1.2 ML 1s Office of Biological and Environmental
Research
FX We thank Dr. Mike R. Thompson and Dr. Angel Ugrinov for help with the
X-ray diffraction measurements and valuable discussions. The
experimental work was supported by the National Science Foundation
(DMR-0503383) and partially by the Petroleum Research Fund (PRF#
46275-AC6) administered by the American Chemical Society and performed
at EMSL, a national scientific user facility sponsored by
DOE1s Office of Biological and Environmental Research and
located at Pacific Northwest National Laboratory, operated for DOE by
Battelle. Acknowledgment is also made to the Donors of the American
Chemical Society Petroleum Research Fund for partial support of this
research. The theoretical work, supported by NKBRSF (2006CB932305,
2007CB815200) and NNSFC ( 20525104) in China, were performed using a HP
Itanium2 cluster at Tsinghua National Laboratory for Information Science
and Technology.
NR 35
TC 12
Z9 12
U1 1
U2 11
PU SPRINGER/PLENUM PUBLISHERS
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1040-7278
J9 J CLUST SCI
JI J. Clust. Sci.
PD SEP
PY 2009
VL 20
IS 3
BP 601
EP 609
DI 10.1007/s10876-009-0266-1
PG 9
WC Chemistry, Inorganic & Nuclear
SC Chemistry
GA 485UY
UT WOS:000269151500012
ER
PT J
AU Qi, YY
Littrell, K
Thiyagarajan, P
Talmon, Y
Schmidt, J
Lin, ZQ
Zakin, JL
AF Qi, Yunying
Littrell, Kenneth
Thiyagarajan, Pappannan
Talmon, Yeshayahu
Schmidt, Judith
Lin, Zhiqing
Zakin, Jacques L.
TI Small-angle neutron scattering study of shearing effects on
drag-reducing surfactant solutions
SO JOURNAL OF COLLOID AND INTERFACE SCIENCE
LA English
DT Article
DE Surfactant; Drag reduction; Rheology; SANS (small-angel neutron
scattering)
ID THREAD-LIKE MICELLES; ROD-LIKE MICELLES; CATIONIC SURFACTANTS; COMPLEX
FLUIDS; FLOW; MIXTURES; TRANSITIONS; REDUCTION; RHEOLOGY; BEHAVIOR
AB Drag-reducing surfactant solutions are very sensitive to shear. Shear can induce nanostructural transitions which affect drag reduction effectiveness and rheological properties. Literature reports on the effects of shear on different micellar solutions are inconsistent. In this paper, the effects of shear on three cationic drag-reducing surfactant solutions each with very different nanostructures and rheological behaviors, Arquad 16-50/sodium salicylate (NaSal) (5 mM/5 mM) (has thread-like micelles, shear-induced structure and large first normal stress (N-1)), Arquad S-50/NaSal (5 mM/12.5 mM) (has branched micelles, no shear-induced structure and first normal stress is about zero) and Arquad 16-50/sodium 3,4-dimethyl-benzoate (5 mM/5 mM) (has vesicles and thread-like micelles, shear-induced structure and high first normal stress (N-1)) are studied by small-angle neutron scattering (SANS), together with their theological properties, drag reduction behavior and nanostructures by cryogenic-temperature transmission electron microscopy(cryo-TEM). The differences in the theological behavior and the SANS data of the solutions are explained by the different responses of the nanostructures to shear based on a two-step response to shear. (C) 2009 Elsevier Inc. All rights reserved.
C1 [Qi, Yunying; Lin, Zhiqing; Zakin, Jacques L.] Ohio State Univ, Dept Chem & Biomol Engn, Columbus, OH 43210 USA.
[Littrell, Kenneth] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Thiyagarajan, Pappannan] US DOE, Off Basic Energy Sci, Washington, DC 20585 USA.
[Talmon, Yeshayahu; Schmidt, Judith] Technion Israel Inst Technol, Dept Chem Engn, IL-32000 Haifa, Israel.
RP Zakin, JL (reprint author), Ohio State Univ, Dept Chem & Biomol Engn, Columbus, OH 43210 USA.
EM zakin@chbmeng.ohio-state.edu
RI Littrell, Kenneth/D-2106-2013
OI Littrell, Kenneth/0000-0003-2308-8618
FU Ohio State University; DOE-BES [DEFG0296ER45612]; Argonne National
Laboratory
FX Y. Qi appreciates the support of a University Fellowship and a
Presidential Fellowship from The Ohio State University. This work
benefitted from the use of IPNS, supported by DOE-BES under Contract
#DEFG0296ER45612 to the University of Chicago. The authors wish to thank
Mr. Denis Wozniak in IPNS of Argonne National Laboratory for his kind
help in the small-angle neutron scattering experiments. The cryo-TEM
work was performed at the Hannah and George Krumholz Advanced Microscopy
Laboratory, part of the Technion Project on Complex Fluids,
Microstructure and Macromolecules. The Technion group's research was
supported in part by The Fund for Promotion of Research at the Technion.
NR 40
TC 8
Z9 8
U1 0
U2 12
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0021-9797
EI 1095-7103
J9 J COLLOID INTERF SCI
JI J. Colloid Interface Sci.
PD SEP 1
PY 2009
VL 337
IS 1
BP 218
EP 226
DI 10.1016/j.jcis.2009.05.020
PG 9
WC Chemistry, Physical
SC Chemistry
GA 472EI
UT WOS:000268111800029
PM 19540509
ER
PT J
AU Picker, RC
AF Picker, Randal C.
TI THE GOOGLE BOOK SEARCH SETTLEMENT: A NEW ORPHAN-WORKS MONOPOLY?
SO JOURNAL OF COMPETITION LAW & ECONOMICS
LA English
DT Article
AB This paper considers the proposed settlement agreement between Google and the Authors Guild relating to Google Book Search (GBS). I focus on three issues that raise antitrust and competition policy concerns. First, the agreement calls for Google to act as agent for rightsholders in setting the price of online access to consumers. Google is tasked with developing a pricing algorithm that will maximize revenues for each of those works. Direct competition among rightsholders would push prices towards some measure of costs and would not be designed to maximize revenues. The consumer access pricing provision might very well fail a challenge under Section 1 of the Sherman Act. Second, and much more centrally to the settlement agreement, the opt-out class action will make it possible for Google to include orphan works in its book search service. Orphan works are works as to which the rightsholder cannot be identified or found. The opt-out class action is the vehicle for large-scale collective action by active rightsholders. Active rightsholders have little incentive to compete with themselves by granting multiple licenses of their works or of the orphan works. Plus under the terms of the settlement agreement, active rightsholders benefit directly from the revenues attributable to orphan works used in GBS. We can mitigate the market power that will otherwise arise through the settlement by expanding the number of rights licenses available under the settlement agreement. To do that, we should take the step of unbundling the orphan works deal from the overall settlement agreement and create a separate license to use those works. All of that will undoubtedly add more complexity to what is already a large piece of work, and it may make sense to push out the new licenses to the future. That would mean ensuring now that the court retains jurisdiction to do that and/or giving the new registry created in the settlement the power to do this sort of licensing. Third, there is a risk that approval by the court of the settlement could cause antitrust immunities to attach to the arrangements created by the settlement agreement. As it is highly unlikely that the fairness hearing will undertake a meaningful antitrust analysis of those arrangements, if the district court approves the settlement, the court should include a clause-call this a no Noerr clause-in the order approving the settlement providing that no antitrust immunities attach from the court's approval.
C1 [Picker, Randal C.] Univ Chicago, Sch Law, Chicago, IL 60637 USA.
[Picker, Randal C.] Univ Chicago, Computat Inst, Chicago, IL 60637 USA.
[Picker, Randal C.] Argonne Natl Lab, Argonne, IL 60439 USA.
RP Picker, RC (reprint author), Univ Chicago, Sch Law, Chicago, IL 60637 USA.
EM r-picker@uchicago.edu
NR 12
TC 11
Z9 11
U1 2
U2 12
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 1744-6414
J9 J COMPET LAW ECON
JI J. Compet. Law Econ.
PD SEP
PY 2009
VL 5
IS 3
BP 383
EP 409
DI 10.1093/joclec/nhp013
PG 27
WC Economics; Law
SC Business & Economics; Government & Law
GA V19TG
UT WOS:000208094100001
ER
PT J
AU Brighton, A
Forrest, M
Starbuck, M
Erdman, D
Fox, B
AF Brighton, Aaron
Forrest, Mark
Starbuck, Mike
Erdman, Donald
Fox, Bronwyn
TI Strain Rate Effects on the Energy Absorption of Rapidly Manufactured
Composite Tubes
SO JOURNAL OF COMPOSITE MATERIALS
LA English
DT Article
DE carbon fibre; glass fibre; energy absorption; mechanical testing
ID CAPABILITY
AB Quasi-static and intermediate rate axial crush tests were conducted on tubular specimens of Carbon/Epoxy (Toray T700/G83C) and Glass/Polypropylene (Twintex). The quasi-static tests were conducted at 10 mm/min (1.67 x 10(-4) m/s); five different crush initiators were used. Tests at intermediate rates were performed at speeds of 0.25, 0.5, 0.75, 1, 2, and 4 m/s. Modes of failure and specific energy absorption (SEA) values were studied. The highest SEA measured was 86 kJ/kg. This value was observed using Carbon/Epoxy samples at quasi static rates with a 45 degrees chamfer initiator. The highest energy absorption for Twintex tubes was observed to be 57.56 kJ/kg during 45 degrees chamfer initiated tests at 0.25 m/s. Compared with steel and aluminium, SEA values of 15 and 30 kJ/kg, respectively, the benefits of using composite materials in crash structures become apparent.
C1 [Brighton, Aaron; Forrest, Mark; Fox, Bronwyn] Deakin Univ, Inst Technol Res & Innovat, Geelong, Vic 3217, Australia.
[Starbuck, Mike; Erdman, Donald] Oak Ridge Natl Lab, Oak Ridge, TN USA.
RP Brighton, A (reprint author), Deakin Univ, Inst Technol Res & Innovat, Geelong, Vic 3217, Australia.
EM aaron.brighton@deakin.edu.au
RI Fox, Bronwyn/C-9539-2009; Fox, Bronwyn/E-5769-2010
OI Fox, Bronwyn/0000-0001-8747-9373
FU Victorian Centre for Materials and Manufacturing (VCAMM)
FX The author would like to thank the Victorian Centre for Materials and
Manufacturing ( VCAMM) for the financial support of this work, Oak Ridge
National Laboratories for the use of Facilities and Peter Brighton for
the still photography. Research sponsored by the Assistant Secretary for
Energy Efficiency and Renewable Energy, Office of Freedom CAR and
Vehicle Technologies, as part of the Automotive Lightweighting Materials
Program and the High Temperature Materials Laboratory User Program, Oak
Ridge National Laboratory, managed by UT- Battelle, LLC, for the U. S.
Department of Energy under contract number DE- AC05- 00OR22725. This
document was prepared by Quickstep technologies as a result of the use
of facilities of the U. S. Department of Energy ( DOE) that are managed
by UT- BATTELLE, LLC. Neither UT- BATTELLE, LLC, DOE, or the U. S.
government, nor any person acting on their behalf: ( a) makes any
warranty or representation, express or implied, with respect to the
information contained in this document; or ( b) assumes any liabilities
with respect to the use of, or damages resulting from the use of, any
information contained in the document.
NR 18
TC 3
Z9 3
U1 1
U2 6
PU SAGE PUBLICATIONS LTD
PI LONDON
PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
SN 0021-9983
J9 J COMPOS MATER
JI J. Compos Mater.
PD SEP
PY 2009
VL 43
IS 20
BP 2183
EP 2200
DI 10.1177/0021998309344646
PG 18
WC Materials Science, Composites
SC Materials Science
GA 490RP
UT WOS:000269521700003
ER
PT J
AU Walsh, T
Reese, G
Dohrmann, C
Rouse, J
AF Walsh, Timothy
Reese, Garth
Dohrmann, Clark
Rouse, Jerry
TI FINITE ELEMENT METHODS FOR STRUCTURAL ACOUSTICS ON MISMATCHED MESHES
SO JOURNAL OF COMPUTATIONAL ACOUSTICS
LA English
DT Article
DE Finite elements; acoustics; structural acoustics; mismatched meshes; wet
surface
ID ALGORITHM
AB In this paper, a new technique is presented for structural acoustic analysis in the case of nonconforming acoustic-solid interface meshes. We first describe a simple method for coupling nonconforming acoustic-acoustic meshes, and then show that a similar approach, together with the coupling operators from conforming analysis, can also be applied to nonconforming structural acoustics. In the case of acoustic-acoustic interfaces, the continuity of acoustic pressure is enforced with a set of linear constraint equations. For structural acoustic interfaces, the same set of linear constraints is used, in conjunction with the weak formulation and the coupling operators that are commonly used in conforming structural acoustics. The constraint equations are subsequently eliminated using a static condensation procedure. We show that our method is equally applicable to time domain, frequency domain, and coupled eigenvalue analysis for structural acoustics. Numerical examples in both the time and frequency domains are presented to verify the methods.
C1 [Walsh, Timothy; Reese, Garth; Dohrmann, Clark; Rouse, Jerry] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Walsh, T (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM tfwalsh@sandia.gov
NR 22
TC 2
Z9 2
U1 0
U2 1
PU WORLD SCIENTIFIC PUBL CO PTE LTD
PI SINGAPORE
PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE
SN 0218-396X
J9 J COMPUT ACOUST
JI J. Comput. Acoust.
PD SEP
PY 2009
VL 17
IS 3
BP 247
EP 275
DI 10.1142/S0218396X0900394X
PG 29
WC Acoustics; Mathematics, Interdisciplinary Applications
SC Acoustics; Mathematics
GA 489VP
UT WOS:000269451800002
ER
PT J
AU Kolev, TV
Vassilevski, PS
AF Kolev, Tzanio V.
Vassilevski, Panayot S.
TI PARALLEL AUXILIARY SPACE AMG FOR H(curl) PROBLEMS
SO JOURNAL OF COMPUTATIONAL MATHEMATICS
LA English
DT Article
DE Parallel algebraic multigrid; H(curl) problems; Edge elements; Auxiliary
space preconditioning
ID ALGEBRAIC MULTIGRID METHOD; UNSTRUCTURED GRIDS; MAXWELLS EQUATIONS;
MAGNETIC DIFFUSION; DISCRETIZATION; H(DIV)
AB In this paper we review a number of auxiliary space based preconditioners for the second order definite and semi-definite Maxwell problems discretized with the lowest order Nedelec finite elements. We discuss the parallel implementation of the most promising of these methods, the ones derived from the recent Hiptmair-Xu (HX) auxiliary space decomposition [Hiptmair and Xu, SIAM J. Numer. Anal., 45 (2007), pp. 2483-2509]. An extensive set of numerical experiments demonstrate the scalability of our implementation on large-scale H(curl) problems.
C1 [Kolev, Tzanio V.; Vassilevski, Panayot S.] Lawrence Livermore Natl Lab, Ctr Appl sci Comp, Livermore, CA 94551 USA.
RP Kolev, TV (reprint author), Lawrence Livermore Natl Lab, Ctr Appl sci Comp, POB 808,L-560, Livermore, CA 94551 USA.
EM tzanio@llnl.gov; panayot@llnl.gov
FU Lawrence Livermore National Laboratory [DE-AC52-07NA27344,
UCRL-JRNL-237306]
FX This work performed under the auspices of the U.S. Department of Energy
by Lawrence Livermore National Laboratory under Contract
DE-AC52-07NA27344, UCRL-JRNL-237306.
NR 27
TC 27
Z9 27
U1 0
U2 1
PU VSP BV
PI LEIDEN
PA BRILL ACADEMIC PUBLISHERS, PO BOX 9000, 2300 PA LEIDEN, NETHERLANDS
SN 0254-9409
J9 J COMPUT MATH
JI J. Comput. Math.
PD SEP
PY 2009
VL 27
IS 5
BP 604
EP 623
DI 10.4208/jcm.2009.27.5.013
PG 20
WC Mathematics, Applied; Mathematics
SC Mathematics
GA 469MO
UT WOS:000267903700004
ER
PT J
AU McClarren, RG
Urbatsch, TJ
AF McClarren, Ryan G.
Urbatsch, Todd J.
TI A modified implicit Monte Carlo method for time-dependent radiative
transfer with adaptive material coupling
SO JOURNAL OF COMPUTATIONAL PHYSICS
LA English
DT Article
DE Implicit Monte Carlo method; Thermal radiative transfer; High energy
density physics
ID TRANSFER EQUATIONS
AB In this paper we develop a robust implicit Monte Carlo (IMC) algorithm based on more accurately updating the linearized equilibrium radiation energy density. The method does not introduce oscillations in the solution and has the same limit as Delta t -> infinity as the standard Fleck and Cummings IMC method. Moreover, the approach we introduce can be trivially added to current implementations of IMC by changing the definition of the Fleck factor. Using this new method we develop an adaptive scheme that uses either standard IMC or the modified method basing the adaptation on a zero-dimensional problem solved in each cell. Numerical results demonstrate that the new method can avoid the nonphysical overheating that occurs in standard IMC when the time step is large. The method also leads to decreased noise in the material temperature at the cost of a potential increase in the radiation temperature noise. (C) 2009 Elsevier Inc. All rights reserved.
C1 [McClarren, Ryan G.] Texas A&M Univ, Inst Appl Math & Computat Sci, College Stn, TX 77843 USA.
[Urbatsch, Todd J.] Los Alamos Natl Lab, Computat Phys Grp CCS 2, Los Alamos, NM 87545 USA.
RP McClarren, RG (reprint author), Texas A&M Univ, Inst Appl Math & Computat Sci, College Stn, TX 77843 USA.
EM rgm@tamu.edu; tmonster@lanl.gov
FU U.S. government [DE-AC52-06NA25396]; U.S. Department of Energy
[LA-UR-09-02297]
FX Portions of this work were performed under U.S. government contract
DE-AC52-06NA25396 for Los Alamos National Laboratory, which is operated
by Los Alamos National Security, LLC. (LAMS) for the U.S. Department of
Energy LA-UR-09-02297.
NR 18
TC 15
Z9 15
U1 1
U2 2
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0021-9991
J9 J COMPUT PHYS
JI J. Comput. Phys.
PD SEP 1
PY 2009
VL 228
IS 16
BP 5669
EP 5686
DI 10.1016/j.jcp.2009.04.028
PG 18
WC Computer Science, Interdisciplinary Applications; Physics, Mathematical
SC Computer Science; Physics
GA 474PH
UT WOS:000268295900004
ER
PT J
AU Densmore, JD
Warsa, JS
Lowrie, RB
Morel, JE
AF Densmore, Jeffery D.
Warsa, James S.
Lowrie, Robert B.
Morel, Jim E.
TI Stability analysis of implicit time discretizations for the
Compton-scattering Fokker-Planck equation
SO JOURNAL OF COMPUTATIONAL PHYSICS
LA English
DT Article
DE Radiative transfer; Compton scattering; Fokker-Planck approximation;
Kompaneets' equation; Stability analysis
ID RADIATIVE-TRANSFER; ELECTRONS
AB The Fokker-Planck equation is a widely used approximation for modeling the Compton scattering of photons in high energy density applications. In this paper, we perform a stability analysis of three implicit time discretizations for the Compton-Scattering Fokker-Planck equation. Specifically, we examine (i) a Semi-Implicit (SI) scheme that employs backward-Euler differencing but evaluates temperature-dependent coefficients at their beginning-of-time-step values, (ii) a Fully Implicit (FI) discretization that instead evaluates temperature-dependent coefficients at their end-of-time-step values, and (iii) a Linearized Implicit (LI) scheme, which is developed by linearizing the temperature dependence of the FI discretization within each time step. Our stability analysis shows that the FI and LI schemes are unconditionally stable and cannot generate oscillatory solutions regardless of time-step size, whereas the SI discretization can suffer from instabilities and nonphysical oscillations for sufficiently large time steps. With the results of this analysis, we present time-step limits for the SI scheme that prevent undesirable behavior. We test the validity of our stability analysis and time-step limits with a set of numerical examples. Published by Elsevier Inc.
C1 [Densmore, Jeffery D.; Warsa, James S.; Lowrie, Robert B.] Los Alamos Natl Lab, Computat Phys & Methods Grp, Los Alamos, NM 87545 USA.
[Morel, Jim E.] Texas A&M Univ, Dept Nucl Engn, College Stn, TX 77843 USA.
RP Densmore, JD (reprint author), Los Alamos Natl Lab, Computat Phys & Methods Grp, POB 1663,MS D409, Los Alamos, NM 87545 USA.
EM jdd@lanl.gov; warsa@lanl.gov; lowrie@lanl.gov; morel@tamu.edu
OI Lowrie, Robert/0000-0001-5537-9183
FU U.S. government [DE-AC52-06NA25396]
FX We would like to thank Anil Prinja (University of New Mexico) for
helpful discussions. This work was performed under U.S. government
contract DE-AC52-06NA25396 for Los Alamos National Laboratory, which is
operated by Los Alamos National Security, LLC, for the U.S. Department
of Energy.
NR 19
TC 3
Z9 3
U1 0
U2 1
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0021-9991
J9 J COMPUT PHYS
JI J. Comput. Phys.
PD SEP 1
PY 2009
VL 228
IS 16
BP 5933
EP 5960
DI 10.1016/j.jcp.2009.05.003
PG 28
WC Computer Science, Interdisciplinary Applications; Physics, Mathematical
SC Computer Science; Physics
GA 474PH
UT WOS:000268295900019
ER
PT J
AU Pistorio, B
Yang, G
Diridollou, S
Hallegot, P
Camacho, A
Zaluzec, NJ
Dixon, F
Porter, C
Bryant, H
AF Pistorio, Bradford
Yang, Grace
Diridollou, Stephane
Hallegot, Philippe
Camacho, Alejandra
Zaluzec, Nestor J.
Dixon, Felicia
Porter, Crystal
Bryant, Harold
TI HAIR BREAKAGE FOR THE AFRICAN-AMERICAN CONSUMER: CAUSES AND CONSUMER
PERCEPTION
SO JOURNAL OF COSMETIC SCIENCE
LA English
DT Article
CT Annual Scientific Seminar of the Society-of-Cosmetic-Chemists
CY JUN 04-05, 2009
CL Chicago, IL
SP Soc Cosmet Chemists
C1 [Pistorio, Bradford; Yang, Grace; Diridollou, Stephane; Camacho, Alejandra; Dixon, Felicia; Porter, Crystal; Bryant, Harold] LOreal Inst Ethn Hair & Skin Res, Chicago, IL USA.
[Hallegot, Philippe] LOreal Res Dept Phys, Aulnay Sous Bois, France.
[Zaluzec, Nestor J.] Argonne Natl Lab, Div Mat Sci, Ctr Electron Microscopy, Argonne, IL 60439 USA.
RP Pistorio, B (reprint author), LOreal Inst Ethn Hair & Skin Res, Chicago, IL USA.
NR 0
TC 0
Z9 0
U1 1
U2 1
PU SOC COSMETIC CHEMISTS
PI NEW YORK
PA 120 WALL STREET, SUITE 2400, NEW YORK, NY 10005-4088 USA
SN 1525-7886
J9 J COSMET SCI
JI J. Cosmet. Sci.
PD SEP-OCT
PY 2009
VL 60
IS 5
BP 582
EP 583
PG 2
WC Chemistry, Applied; Dermatology
SC Chemistry; Dermatology
GA 515SQ
UT WOS:000271493600024
ER
PT J
AU Johnston, RG
Michaud, EC
Warner, JS
AF Johnston, Roger G.
Michaud, Eric C.
Warner, Jon S.
TI RESEARCH NOTE: THE SECURITY OF URINE DRUG TESTING
SO JOURNAL OF DRUG ISSUES
LA English
DT Article
AB We studied 23 different commercial products for collecting, storing, securing, and mailing urine samples analyzed for illicit drug use. Despite their tamper-indicating features, all of these products can be quickly and easily tampered with, either before or after sample collection, while leaving little or (usually) no evidence to be detected. Either false-positive or false-negative drug test results could then occur A brief review of other security practices and standards associated with urine drug testing suggests there may often be additional serious security problems. Given the importance of drug testing and the fact that illicit drug tests have a huge impact on people's careers, livelihoods, and reputations, better security, especially better tamper detection features, would seem warranted.
C1 [Johnston, Roger G.; Michaud, Eric C.; Warner, Jon S.] Argonne Natl Lab, VAT, Argonne, IL 60439 USA.
[Johnston, Roger G.] Los Alamos Natl Lab, VAT, Los Alamos, NM 87545 USA.
RP Johnston, RG (reprint author), Argonne Natl Lab, VAT, Argonne, IL 60439 USA.
NR 23
TC 0
Z9 0
U1 0
U2 1
PU J DRUG ISSUES INC
PI TALLAHASSEE
PA FLORIDA STATE UNIV, SCHOOL CRIMINOLOGY CRIMINAL JUSTICE, PO BOX 66696,
TALLAHASSEE, FL 32313-6696 USA
SN 0022-0426
J9 J DRUG ISSUES
JI J. Drug Issues
PD FAL
PY 2009
VL 39
IS 4
BP 1015
EP 1028
PG 14
WC Substance Abuse
SC Substance Abuse
GA 546FZ
UT WOS:000273797900012
ER
PT J
AU Vianco, PT
Rejent, JA
AF Vianco, P. T.
Rejent, J. A.
TI Dynamic Recrystallization (DRX) as the Mechanism for Sn Whisker
Development. Part I: A Model
SO JOURNAL OF ELECTRONIC MATERIALS
LA English
DT Article
DE Dynamic recrystallization; tin whisker growth
ID GRAIN-BOUNDARY MIGRATION; FAST-DIFFUSION; STATIC RECRYSTALLIZATION;
ACTIVATION-ENERGY; CREEP-BEHAVIOR; TIN; KINETICS; GROWTH; PB; CU
AB A model is proposed that attributes whisker growth in metals and alloys to dynamic recrystallization (DRX) and, in particular, DRX at the material surface. Each step in the DRX process was correlated to the development of whiskers. The DRX model depends upon the details of the deformation process(es) responsible for new grain initiation and growth. The dependencies exhibited by DRX as a function of deformation strain rate, temperature, and microstructure correlate with the behaviors of whisker development. Anomalous or ultrafast diffusion mechanisms, either by themselves or associated with the deformation structures, provide the means of mass transport necessary to grow whiskers. In Part II of this study, the strain and rate kinetics data are determined for Sn. Parts I and II, together, provide a critical step towards developing a capability to predict the conditions that are likely to cause whisker growth in engineering applications.
C1 [Vianco, P. T.; Rejent, J. A.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Vianco, PT (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM ptvianc@sandia.gov
FU US Department of Energy [DE-AC04-94AL85000]
FX The authors wish to thank C. Robino for his thoughtful review of the
manuscript and J. Cheng, University of Rochester, NY, for the SEM
pictures of the whiskers growing from thin Sn films. Sandia is a
multiprogram laboratory operated by Sandia Corporation, a Lockheed
Martin Company, for the US Department of Energy's National Nuclear
Security Administration under Contract No. DE-AC04-94AL85000.
NR 56
TC 23
Z9 25
U1 1
U2 13
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0361-5235
J9 J ELECTRON MATER
JI J. Electron. Mater.
PD SEP
PY 2009
VL 38
IS 9
BP 1815
EP 1825
DI 10.1007/s11664-009-0879-z
PG 11
WC Engineering, Electrical & Electronic; Materials Science,
Multidisciplinary; Physics, Applied
SC Engineering; Materials Science; Physics
GA 482IR
UT WOS:000268879800001
ER
PT J
AU Vianco, PT
Rejent, JA
AF Vianco, P. T.
Rejent, J. A.
TI Dynamic Recrystallization (DRX) as the Mechanism for Sn Whisker
Development. Part II: Experimental Study
SO JOURNAL OF ELECTRONIC MATERIALS
LA English
DT Article
DE Sn whiskers; dynamic recrystallization; creep
ID TIN SINGLE-CRYSTALS; STATIC RECRYSTALLIZATION; CREEP; TEMPERATURE;
BEHAVIOR; DEFORMATION; KINETICS
AB In Part I of this study, a dynamic recrystallization (DRX) model was proposed to describe the development of metal whiskers. A diffusion-assisted, dislocation-based mechanism would support the DRX steps of grain initiation (refinement) and grain growth. This, Part II, describes experiments investigating the time-dependent deformation (creep) of Sn under temperature conditions (0A degrees C, 25A degrees C, 50A degrees C, 75A degrees C, and 100A degrees C) and stresses (1 MPa, 2 MPa, 5 MPa, and 10 MPa) that are commensurate with Sn whisker development, in order to parameterize the DRX process. The samples, which had columnar grains oriented perpendicular to the stress axis similar to their morphology in Sn coatings but of larger size, were tested in the as-fabricated condition as well as after 24 h annealing treatments at 150A degrees C or 200A degrees C. The steady-state creep behavior fell into two categories: low (< 10(-7) s(-1)) and high strain rates (> 10(-7) s(-1)). The apparent activation energy (Delta H) at low strain rates was 8 +/- A 9 kJ/mol for the as-fabricated condition, indicating that an anomalously or ultrafast diffusion mass transport mechanism assisted deformation. Under the high strain rates, the Delta H was 65 +/- A 6 kJ/mol (as-fabricated). The rate kinetics were not altered significantly by the annealing treatments. The critical strain (epsilon (c)) and Zener-Hollomon parameter (Z) confirmed that these stresses and temperatures were nearly capable of causing cyclic DRX in the Sn creep samples, but would certainly do so in Sn coatings with the smaller grain size. The effects of the annealing treatments, coupled with the DRX model, indicate the need to maximize the creep strain rate during stress relaxation so as to avoid conditions that would favor whisker growth. This study provides a quantitative methodology for predicting the likelihood of whisker growth based upon the coating stress, grain size, temperature, and the similarity assumption of creep strain.
C1 [Vianco, P. T.; Rejent, J. A.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Vianco, PT (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM ptvianc@sandia.gov
FU US Department of Energy [DE-AC04-94AL85000]
FX The authors wish to thank D. Susan for his thorough review of this Part
II manuscript and C. Robino for his comments on Part I. A. Kilgo
provided the optical micrographs of the Sn sample microstructures.
Sandia is a multiprogram laboratory operated by Sandia Corporation, a
Lockheed Martin Company, for the US Department of Energy's National
Nuclear Security Administration under Contract No. DE-AC04-94AL85000.
NR 32
TC 9
Z9 10
U1 0
U2 4
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0361-5235
J9 J ELECTRON MATER
JI J. Electron. Mater.
PD SEP
PY 2009
VL 38
IS 9
BP 1826
EP 1837
DI 10.1007/s11664-009-0882-4
PG 12
WC Engineering, Electrical & Electronic; Materials Science,
Multidisciplinary; Physics, Applied
SC Engineering; Materials Science; Physics
GA 482IR
UT WOS:000268879800002
ER
PT J
AU Carr, GB
Schwartz, RS
Schaudinn, C
Gorur, A
Costerton, JW
AF Carr, Gary B.
Schwartz, Richard S.
Schaudinn, Christoph
Gorur, Amita
Costerton, J. William
TI Ultrastructural Examination of Failed Molar Retreatment with Secondary
Apical Periodontitis: An Examination of Endodontic Biofilms in an
Endodontic Retreatment Failure
SO JOURNAL OF ENDODONTICS
LA English
DT Article
DE Apical periodontitis; biofilm; endodontic failure; endodontic
retreatment; ultrastructural
ID ROOT-FILLED TEETH; PERIAPICAL LESIONS; BACTERIAL BIOFILMS;
MEMBRANE-VESICLES; SURVIVAL; CANALS; MICROORGANISMS; COMMUNITIES;
ENVIRONMENT; INFECTIONS
AB A light and electron microscope examination of the resected root tip of a failing endodontically re-treated lower molar was examined. The tooth had been initially treated 10 years ago and then re-treated 2 years ago. The resected root tip was sectioned axially, and thin sections were examined through the entire length of the specimen. Thin sections were examined with a transmission electron microscope. The thin sections were randomly chosen along the isthmus areas between the mesiobuccal and mesiolingual canals. our findings suggest that a complex, variable, multispecies biofilm was present the entire length of the specimen. (J Endod 2009,35:1303-1309)
C1 [Carr, Gary B.] Pacific Endodont Res Fdn, San Diego, CA 92121 USA.
[Schaudinn, Christoph] USC Sch Dent, Ctr Biofilms, Los Angeles, CA USA.
[Gorur, Amita] Lawrence Berkeley Natl Lab, Berkeley, CA USA.
[Costerton, J. William] Allegheny Gen Hosp, Dept Orthoped Surg, Pittsburgh, PA 15212 USA.
[Costerton, J. William] Allegheny Singer Res Inst, Ctr Genom Sci, Pittsburgh, PA 15212 USA.
RP Carr, GB (reprint author), Pacific Endodont Res Fdn, 6235 Lusk Blvd, San Diego, CA 92121 USA.
EM gary@tdo4endo.com
NR 34
TC 33
Z9 34
U1 0
U2 8
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0099-2399
J9 J ENDODONT
JI J. Endod.
PD SEP
PY 2009
VL 35
IS 9
BP 1303
EP 1309
DI 10.1016/j.joen.2009.05.035
PG 7
WC Dentistry, Oral Surgery & Medicine
SC Dentistry, Oral Surgery & Medicine
GA 493TJ
UT WOS:000269760600027
PM 19720237
ER
PT J
AU Barnes, CM
Marshall, DW
Keeley, JT
Hunn, JD
AF Barnes, Charles M.
Marshall, Douglas W.
Keeley, Joe T.
Hunn, John D.
TI Results of Tests to Demonstrate a 6-in.-Diameter Coater for Production
of TRISO-Coated Particles for Advanced Gas Reactor Experiments
SO JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE
ASME
LA English
DT Article; Proceedings Paper
CT 4th International Topical Meeting on High Temperature Reactor Technology
CY SEP 28-OCT 01, 2008
CL Washington, DC
DE TRISO-coatings; nuclear fuel; coater; pyrocarbon; silicon carbide;
particle properties
ID FUEL-PARTICLES; PERFORMANCE; FABRICATION
AB The next generation nuclear plant (NGNP)/advanced gas reactor (AGR) fuel development and qualification program includes a series of irradiation experiments in Idaho National Laboratory's advanced test reactor. Tristructural isotropic (TRISO)-coated particles for the first AGR experiment, AGR-1, were produced at Oak Ridge National Laboratory (ORNL) in a 2-in.(5-cm)-diameter coater. A requirement of the NGNP/AGR program is to produce coated particles for later experiments in coaters more representative of industrial scale. Toward this end, tests have been performed by Babcock and Wilcox (Lynchburg, VA) in a 6-in.(15-cm)-diameter coater. These tests have led to successful fabrication of particles for the second AGR experiment, AGR-2. While a thorough study of how coating parameters affect particle properties was not the goal of these tests, the test data obtained provide insight into process parameter/coated particle property relationships. Most relationships for the 6-in.-diameter coater followed trends found with the ORNL 2-in. coater, in spite of differences in coater design and bed hydrodynamics. For example, the key coating parameters affecting pyrocarbon anisotropy were coater temperature, coating gas fraction, total gas flow rate, and kernel charge size. Anisotropy of the outer pyrolytic carbon layer also strongly correlates with coater differential pressure. In an effort to reduce the total particle fabrication run time, silicon carbide (SiC) was deposited with methyltrichlorosilane (MTS) concentrations up to 3 mol %. Using only hydrogen as the fluidizing gas, the high concentration MTS tests resulted in particles with lower than desired SiC densities. However, when hydrogen was partially replaced with argon, high SiC densities were achieved with the high MTS gas fraction. [DOI: 10.1115/1.3098424]
C1 [Barnes, Charles M.; Marshall, Douglas W.] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
[Keeley, Joe T.] B&W Nucl Operat Grp, Lynchburg, VA 24504 USA.
[Hunn, John D.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Barnes, CM (reprint author), Idaho Natl Lab, POB 1625, Idaho Falls, ID 83415 USA.
EM charles.barnes@inl.gov; douglas.marshall@inl.gov; jtkeely@babcock.com;
hunnjd@ornl.gov
NR 23
TC 2
Z9 2
U1 0
U2 5
PU ASME-AMER SOC MECHANICAL ENG
PI NEW YORK
PA THREE PARK AVE, NEW YORK, NY 10016-5990 USA
SN 0742-4795
J9 J ENG GAS TURB POWER
JI J. Eng. Gas. Turbines Power-Trans. ASME
PD SEP
PY 2009
VL 131
IS 5
AR 052905
DI 10.1115/1.3098424
PG 6
WC Engineering, Mechanical
SC Engineering
GA 457WW
UT WOS:000266967200015
ER
PT J
AU Chi, SH
Contescu, CI
Burchell, TD
AF Chi, Se-Hwan
Contescu, Cristian I.
Burchell, Timothy D.
TI Density Change of an Oxidized Nuclear Graphite by Acoustic Microscopy
and Image Processing
SO JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE
ASME
LA English
DT Article; Proceedings Paper
CT 4th International Topical Meeting on High Temperature Reactor Technology
CY SEP 28-OCT 01, 2008
CL Washington, DC
AB The strong correlation between the density and the physical and mechanical properties of graphite suggests that the method of nondestructive density evaluation could be developed into a characterization technique of great value for the overall improvement of the safety of graphite moderator reactors. In this study, the oxidation-induced density changes in nuclear graphite for very high temperature reactor were determined by a conventional destructive bulk density measurement method (BM) and by a new nondestructive method based on acoustic microscopy and image processing (AM). The results were compared in order to validate the applicability of the latter method. For a direct comparison of the results from both measurements, two specimens were prepared from a cylindrical graphite sample (1 in. diameter and 1 in. height, oxidized to 10% weight loss at 973 K in air for 5 h). The specimens were used for characterization by BM and AM methods, respectively. The results show that, even with a large standard deviation of the AM, the density changing trend from both methods appeared the same. The present observation may be attributed to the fact that AM images reflect characteristic density changes of the graphite sample through the acoustic impedance changes. This study demonstrates the possibility of using AM as a nondestructive technique for the evaluation of density changes in graphite when a database is prepared through a systematic series of experiments. [DOI: 10.1115/1.3098415]
C1 [Chi, Se-Hwan] Korea Atom Energy Res Inst, Nucl Hydrogen Dev & Demonstrat Project, Taejon 305353, South Korea.
[Contescu, Cristian I.; Burchell, Timothy D.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
RP Chi, SH (reprint author), Korea Atom Energy Res Inst, Nucl Hydrogen Dev & Demonstrat Project, 1045 Daedeok Daero, Taejon 305353, South Korea.
EM shchi@kaeri.re.kr; contescuci@ornl.gov; burchelltd@ornl.gov
RI Contescu, Cristian/E-8880-2011; Burchell, Tim/E-6566-2017
OI Contescu, Cristian/0000-0002-7450-3722; Burchell,
Tim/0000-0003-1436-1192
NR 11
TC 1
Z9 1
U1 0
U2 1
PU ASME-AMER SOC MECHANICAL ENG
PI NEW YORK
PA THREE PARK AVE, NEW YORK, NY 10016-5990 USA
SN 0742-4795
J9 J ENG GAS TURB POWER
JI J. Eng. Gas. Turbines Power-Trans. ASME
PD SEP
PY 2009
VL 131
IS 5
AR 052904
DI 10.1115/1.3098415
PG 4
WC Engineering, Mechanical
SC Engineering
GA 457WW
UT WOS:000266967200014
ER
PT J
AU Hoover, R
Phongikaroon, S
Li, S
Simpson, M
Yoo, TS
AF Hoover, Robert
Phongikaroon, Supathorn
Li, Shelly
Simpson, Michael
Yoo, Tae-Sie
TI A Computational Model of the Mark-IV Electrorefiner: Phase I-Fuel
Basket/Salt Interface
SO JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE
ASME
LA English
DT Article; Proceedings Paper
CT 16th International Conference on Nuclear Engineering
CY MAY 11-15, 2008
CL Orlando, FL
SP ASME, Nucl Engn Div, JSME, Japan Soc Mech Engineers
ID URANIUM TRANSPORT; LIQUID CADMIUM; MOLTEN; PU
AB Spent driver fuel from the Experimental Breeder Reactor-II is currently being treated in the Mark-IV electrorefiner in the Fuel Conditioning Facility at Idaho National Laboratory. The modeling approach to be presented here has been developed to help understand the effect of different parameters on the dynamics of this system. The first phase of this new modeling approach focuses on the fuel basket/salt interface involving the transport of various species found in the driver fuels (e. g., uranium and zirconium). This approach minimizes the guessed parameters to only one, the exchange current density (i(0)). U(3+) and Zr(4+) were the only species used for the current study. The result reveals that most of the total cell current is used for the oxidation of uranium, with little being used by zirconium. The dimensionless approach shows that the total potential is a strong function of i(0) and a weak function of wt % of uranium in the salt system for initiation processes. [DOI: 10.1115/1.3078776]
C1 [Hoover, Robert; Phongikaroon, Supathorn] Univ Idaho, Nucl Engn Program, Dept Chem Engn, Idaho Falls, ID 83402 USA.
[Li, Shelly; Simpson, Michael; Yoo, Tae-Sie] Idaho Natl Lab, Pyroproc Technol Dept, Idaho Falls, ID 83415 USA.
RP Phongikaroon, S (reprint author), Univ Idaho, Nucl Engn Program, Dept Chem Engn, 1776 Sci Ctr Dr, Idaho Falls, ID 83402 USA.
EM supathor@uidaho.edu
NR 12
TC 4
Z9 4
U1 1
U2 6
PU ASME-AMER SOC MECHANICAL ENG
PI NEW YORK
PA THREE PARK AVE, NEW YORK, NY 10016-5990 USA
SN 0742-4795
J9 J ENG GAS TURB POWER
JI J. Eng. Gas. Turbines Power-Trans. ASME
PD SEP
PY 2009
VL 131
IS 5
AR 054503
DI 10.1115/1.3078776
PG 4
WC Engineering, Mechanical
SC Engineering
GA 457WW
UT WOS:000266967200023
ER
PT J
AU Engelage, SK
Stringfellow, WT
Letain, T
AF Engelage, Samantha K.
Stringfellow, William T.
Letain, Tracy
TI Disinfection Byproduct Formation Potentials of Wetlands, Agricultural
Drains, and Rivers and the Effect of Biodegradation on Trihalomethane
Precursors
SO JOURNAL OF ENVIRONMENTAL QUALITY
LA English
DT Article
ID DISSOLVED ORGANIC-MATTER; WATERSHED SOURCES; HUMIC SUBSTANCES;
CALIFORNIA; CHLORINATION; SACRAMENTO; BROMIDE; CARBON; THM
AB Trihalomethane (THM) precursors are a significant problem in the San Joaquin River (SJR) watershed, an important source of drinking water for >20 million people. Trihalomethane precursors diminish drinking water quality and are formed during natural decomposition of organic matter in aquatic systems. This study sought to identify sources of chlorine-reactive dissolved organic carbon (DOC) in the SJR watershed and to determine if wetlands were more important sources of THM precursors than nearby rivers and agricultural drains. The effects of biodegradation on DOC quality and quantity were investigated and analyzed across drainage type. Results show wetland drainage contained comparable bromide concentrations and organic carbon aromaticity but contained more than two times the average DOC concentrations found in agricultural drains and rivers. Wetland DOC did nor have an increased propensity to form THMs when compared with the other drainage types, despite significantly higher wetland formation potentials. The higher formation potentials measured in wetland drainages were attributed to higher DOC concentrations; the positive correlation found between DOC and trihalomethane formation potentials (THMFPs) and the significantly higher wetland DOC concentrations Suggest that increased wetland restoration could result in increased THMFPs in the SJR watershed. Wetland THM precursors were more resistant to biodegradation than THM precursors from agricultural and river samples. Results Suggest that THM precursors in the SJR were from algae and were biodegraded.
C1 [Engelage, Samantha K.; Stringfellow, William T.] Univ Calif Berkeley, Lawrence Berkeley Lab, Ecol Dep, Div Earth Sci, Berkeley, CA 94720 USA.
[Engelage, Samantha K.; Stringfellow, William T.; Letain, Tracy] Univ Pacific, Ecol Engn Res Program, Stockton, CA 95211 USA.
RP Stringfellow, WT (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Ecol Dep, Div Earth Sci, 1 Cyclotron Rd,Mailstop 70A-3317, Berkeley, CA 94720 USA.
EM wstringfellow@pacific.edu
RI Stringfellow, William/O-4389-2015
OI Stringfellow, William/0000-0003-3189-5604
FU State Water Resources Control Board Grant Agreement [04-174-555-0]
FX This work was supported by the State Water Resources Control Board Grant
Agreement number 04-174-555-0. We thank Sharon Borglin, Jeremy Hanlon,
Justin Graham, and Rernie Burks of the Ecological Engineering Research
Program at the University of the Pacific for their work on sample
collection and water quality analyses; Robert Parris and Karl Stromayer
of the Fish and Wildlife Service for their assistance; and Randy A.
Dahlgren, of the University of California, Davis for his analysis of
bromide concentrations.
NR 40
TC 15
Z9 15
U1 2
U2 18
PU AMER SOC AGRONOMY
PI MADISON
PA 677 S SEGOE RD, MADISON, WI 53711 USA
SN 0047-2425
J9 J ENVIRON QUAL
JI J. Environ. Qual.
PD SEP-OCT
PY 2009
VL 38
IS 5
BP 1901
EP 1908
DI 10.2134/jeq2009.0015
PG 8
WC Environmental Sciences
SC Environmental Sciences & Ecology
GA 492AX
UT WOS:000269627400014
PM 19643756
ER
PT J
AU Sarkar, P
Bosneaga, E
Auer, M
AF Sarkar, Purbasha
Bosneaga, Elena
Auer, Manfred
TI Plant cell walls throughout evolution: towards a molecular understanding
of their design principles
SO JOURNAL OF EXPERIMENTAL BOTANY
LA English
DT Review
DE 3D organization; chemical composition; deconstruction; evolution;
electron microscopy; plant cell wall; spectroscopy
ID ATOMIC-FORCE MICROSCOPY; KRAFT PULP FIBERS; CELLULOSE MICROFIBRILS;
ELECTRON-MICROSCOPY; GREEN-ALGAE; LAND PLANTS; SEPARATION PROCESSES;
LIGNIN DISTRIBUTION; FIBRIL AGGREGATION; VASCULAR PLANTS
AB Throughout their life, plants typically remain in one location utilizing sunlight for the synthesis of carbohydrates, which serve as their sole source of energy as well as building blocks of a protective extracellular matrix, called the cell wall. During the course of evolution, plants have repeatedly adapted to their respective niche, which is reflected in the changes of their body plan and the specific design of cell walls. Cell walls not only changed throughout evolution but also are constantly remodelled and reconstructed during the development of an individual plant, and in response to environmental stress or pathogen attacks. Carbohydrate-rich cell walls display complex designs, which together with the presence of phenolic polymers constitutes a barrier for microbes, fungi, and animals. Throughout evolution microbes have co-evolved strategies for efficient breakdown of cell walls. Our current understanding of cell walls and their evolutionary changes are limited as our knowledge is mainly derived from biochemical and genetic studies, complemented by a few targeted yet very informative imaging studies. Comprehensive plant cell wall models will aid in the re-design of plant cell walls for the purpose of commercially viable lignocellulosic biofuel production as well as for the timber, textile, and paper industries. Such knowledge will also be of great interest in the context of agriculture and to plant biologists in general. It is expected that detailed plant cell wall models will require integrated correlative multimodal, multiscale imaging and modelling approaches, which are currently underway.
C1 [Sarkar, Purbasha; Bosneaga, Elena; Auer, Manfred] Univ Calif Berkeley, Energy Biosci Inst, Berkeley, CA 94720 USA.
[Auer, Manfred] Joint BioEnergy Inst, Emeryville, CA 94608 USA.
[Auer, Manfred] Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA.
RP Auer, M (reprint author), Univ Calif Berkeley, Energy Biosci Inst, Berkeley, CA 94720 USA.
EM mauer@lbl.gov
FU Director, Office of Science, Office of Biological and Environmental
Research, of the U. S. Department of Energy [DE-AC03-76SF00098]; Energy
Biosciences Institute [007G18]; U. S. Government [DEAC0205CH11231]
FX We would like to acknowledge support by the Director, Office of Science,
Office of Biological and Environmental Research, of the U. S. Department
of Energy under contracts DE-AC03-76SF00098 and by the Energy
Biosciences Institute grant 007G18. This work has been authored by a
contractor of the U. S. Government under Contract No. DEAC0205CH11231.
Accordingly, the U. S. Government retains a nonexclusive royalty-free
license to publish or reproduce the published form of this contribution,
or allow others to do so, for U. S. Government purposes.
NR 134
TC 128
Z9 130
U1 16
U2 116
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 0022-0957
J9 J EXP BOT
JI J. Exp. Bot.
PD SEP
PY 2009
VL 60
IS 13
BP 3615
EP 3635
DI 10.1093/jxb/erp245
PG 21
WC Plant Sciences
SC Plant Sciences
GA 491VQ
UT WOS:000269609800002
PM 19687127
ER
PT J
AU Hsu, SC
AF Hsu, Scott C.
TI Technical Summary of the First US Plasma Jet Workshop
SO JOURNAL OF FUSION ENERGY
LA English
DT Article
DE Magneto-inertial fusion; Magnetized target fusion; Plasma jets; Plasma
liners; High energy density physics
ID MAGNETIZED TARGET FUSION; DYNAMICS
AB This paper provides a technical summary of the first U.S. Plasma Jet Workshop, which was sponsored by the DOE Office of Fusion Energy Sciences and held at Los Alamos National Laboratory on January 24-25, 2008. The purpose of the workshop was to bring together members of the national plasma jet research community in order to discuss ongoing research and identify research needs and opportunities in plasma jets and their applications, which include fundamental studies of high energy density (HED) plasmas, magneto-inertial fusion (MIF), laboratory astrophysics, and disruption mitigation and fueling for magnetic confinement devices. Over the course of the workshop, about equal time was devoted to short technical talks and group discussions.
C1 Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA.
RP Hsu, SC (reprint author), Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA.
EM scotthsu@lanl.gov
OI Hsu, Scott/0000-0002-6737-4934
FU U.S. Department of Energy (DoE), Office of Fusion Energy Sciences (OFES)
[DE-AC52-06NA25396]
FX This work was supported by the U.S. Department of Energy (DoE), Office
of Fusion Energy Sciences (OFES), under contract no. DE-AC52-06NA25396.
The author would like to acknowledge all the workshop participants for a
fruitful workshop, Dr. Francis Thio and DOE-OFES for sponsoring the
workshop, the participants who contributed text and figures to this
summary (Bellan, Bogatu, Bott, Cassibry, Hwang, Intrator, Kim,
MacFarlane, Parks, Ryutov, Smith, Thio, Thoma, Wang, Witherspoon, and
Woodruff), and Dr. Sarah Messer for compiling the information in Table
2.
NR 27
TC 6
Z9 6
U1 1
U2 1
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0164-0313
EI 1572-9591
J9 J FUSION ENERG
JI J. Fusion Energy
PD SEP
PY 2009
VL 28
IS 3
BP 246
EP 257
DI 10.1007/s10894-008-9162-1
PG 12
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 472HJ
UT WOS:000268120900004
ER
PT J
AU Garzoglio, G
Alderman, I
Altunay, M
Ananthakrishnan, R
Bester, J
Chadwick, K
Ciaschini, V
Demchenko, Y
Ferraro, A
Forti, A
Groep, D
Hesselroth, T
Hover, J
Koeroo, O
La Joie, C
Levshina, T
Miller, Z
Packard, J
Sagehaug, H
Sergeev, V
Sfiligoi, I
Sharma, N
Siebenlist, F
Venturi, V
Weigand, J
AF Garzoglio, Gabriele
Alderman, Ian
Altunay, Mine
Ananthakrishnan, Rachana
Bester, Joe
Chadwick, Keith
Ciaschini, Vincenzo
Demchenko, Yuri
Ferraro, Andrea
Forti, Alberto
Groep, David
Hesselroth, Ted
Hover, John
Koeroo, Oscar
La Joie, Chad
Levshina, Tanya
Miller, Zach
Packard, Jay
Sagehaug, Hakon
Sergeev, Valery
Sfiligoi, Igor
Sharma, Neha
Siebenlist, Frank
Venturi, Valerio
Weigand, John
TI Definition and Implementation of a SAML-XACML Profile for Authorization
Interoperability Across Grid Middleware in OSG and EGEE
SO JOURNAL OF GRID COMPUTING
LA English
DT Article
DE Authorization; Interoperability; SAML-XACML; OSG; EGEE
AB In order to ensure interoperability between middleware and authorization infrastructures used in the Open Science Grid (OSG) and the Enabling Grids for E-science (EGEE) projects, an Authorization Interoperability activity was initiated in 2006. The interoperability goal was met in two phases: firstly, agreeing on a common authorization query interface and protocol with an associated profile that ensures standardized use of attributes and obligations; and secondly implementing, testing, and deploying on OSG and EGEE, middleware that supports the interoperability protocol and profile. The activity has involved people from OSG, EGEE, the Globus Toolkit project, and the Condor project. This paper presents a summary of the agreed-upon protocol, profile and the software components involved.
C1 [Garzoglio, Gabriele; Altunay, Mine; Chadwick, Keith; Hesselroth, Ted; Levshina, Tanya; Sergeev, Valery; Sfiligoi, Igor; Sharma, Neha; Weigand, John] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Alderman, Ian; Miller, Zach] Univ Wisconsin, Madison, WI USA.
[Ananthakrishnan, Rachana; Bester, Joe; Siebenlist, Frank] Argonne Natl Lab, Argonne, IL 60439 USA.
[Ciaschini, Vincenzo; Ferraro, Andrea; Forti, Alberto; Venturi, Valerio] INFN CNAF, Bologna, Italy.
[Demchenko, Yuri] Univ Amsterdam, Amsterdam, Netherlands.
[Groep, David; Koeroo, Oscar] NIKHEF, Amsterdam, Netherlands.
[Hover, John; Packard, Jay] BNL, Upton, NY USA.
[La Joie, Chad] SWITCH, Zu, Switzerland.
[Sagehaug, Hakon] BCCS, Bergen, Norway.
RP Garzoglio, G (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
EM garzoglio@fnal.gov; alderman@cs.wisc.edu; maltunay@fnal.gov;
ranantha@mcs.anl.gov; bester@mcs.anl.gov; chadwick@fnal.gov;
vincenzo.ciaschini@cnaf.infn.it; demch@science.uva.nl;
andrea.ferraro@cnaf.infn.it; alberto.forti@cnaf.infn.it;
davidg@nikhef.nl; tdh@fnal.gov; jhover@bnl.gov; okoeroo@nikhef.nl;
chad.lajoie@switch.ch; tlevshin@fnal.gov; zmiller@cs.wisc.edu;
jpackard@bnl.gov; hakon.sagehaug@bccs.uib.no; vsergeev@fnal.gov;
sfiligoi@fnal.gov; neha@fnal.gov; franks@mcs.anl.gov;
valerio.venturi@cnaf.infn.it; weigand@fnal.gov
OI Groep, David/0000-0003-1026-6606; Demchenko, Yuri/0000-0001-7474-9506
FU United States Department of Energy [DE-AC02-07CH11359]; Office of
Advanced Scientific Computing Research, Office of Science, U.S. Dept. of
Energy [DE-AC02-06CH11357, W-31-109-Eng-38]; Netherlands Organisation
for Scientific Research (NWO)
FX Fermilab is operated by Fermi Research Alliance, LLC under Contract No.
DE-AC02-07CH11359 with the United States Department of Energy. This work
was partially funded by the Office of Advanced Scientific Computing
Research, Office of Science, U.S. Dept. of Energy, under Contract
DE-AC02-06CH11357. The work was also partially funded by the
Mathematical, Information, and Computational Sciences Division
sub-program of the Office of Advanced Scientific Computing Research,
Office of Science, U. S. Dept. of Energy, under Contract
W-31-109-Eng-38. This work is part of the research programme of the
Dutch Foundation for Fundamental Research on Matter (FOM), which is
financially supported by the Netherlands Organisation for Scientific
Research (NWO).
NR 21
TC 12
Z9 12
U1 1
U2 5
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 1570-7873
J9 J GRID COMPUT
JI J. Comput.
PD SEP
PY 2009
VL 7
IS 3
BP 297
EP 307
DI 10.1007/s10723-009-9117-4
PG 11
WC Computer Science, Information Systems; Computer Science, Theory &
Methods
SC Computer Science
GA 525VM
UT WOS:000272244900003
ER
PT J
AU Jensen, J
Downing, R
Ross, D
Hodges, M
Sim, A
AF Jensen, Jens
Downing, Roger
Ross, Derek
Hodges, Matt
Sim, Alex
TI Practical Grid Storage Interoperation Interoperation of SRM and SRB Now
SO JOURNAL OF GRID COMPUTING
LA English
DT Article
DE Grid storage; SRM; SRB; gLite; Interoperation
AB In global Grids, interoperation is important. It enables communities to work together, helps prevent vendor lock-in, and in principle enables "cloud-like" resource provision by permitting different resources to meet needs from other communities. In this paper, we discuss a practical example of achieving interoperation between storage resources, and the lessons learned. The aim is to meet current use cases for interoperation with no additional software development. Apart from the practical results, experiences from this work will be relevant to other interoperation activities.
C1 [Jensen, Jens; Ross, Derek; Hodges, Matt] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
[Downing, Roger] SERC, Daresbury Lab, Warrington WA4 4AD, Cheshire, England.
[Sim, Alex] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Jensen, J (reprint author), Rutherford Appleton Lab, Harwell Sci & Innovat Campus, Didcot OX11 0QX, Oxon, England.
EM jens.jensen@stfc.ac.uk
FU Science and Technology Facilities Council; GridPP project; LBNL
FX The authors would like to thank the reviewers for useful comments. This
work was funded by the Science and Technology Facilities Council
(www.scitech.ac.uk) and the GridPP project (www.gridpp.ac.uk). A. Sim
was funded by LBNL. The document was typeset with LATEX.
NR 17
TC 0
Z9 0
U1 0
U2 1
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 1570-7873
EI 1572-9184
J9 J GRID COMPUT
JI J. Comput.
PD SEP
PY 2009
VL 7
IS 3
BP 309
EP 317
DI 10.1007/s10723-009-9127-2
PG 9
WC Computer Science, Information Systems; Computer Science, Theory &
Methods
SC Computer Science
GA 525VM
UT WOS:000272244900004
ER
PT J
AU Craig, NJ
Green, D
AF Craig, Nathaniel J.
Green, Daniel
TI On the phenomenology of strongly coupled hidden sectors
SO JOURNAL OF HIGH ENERGY PHYSICS
LA English
DT Article
DE Supersymmetry Phenomenology
ID RENORMALIZATION-GROUP; FIELD-THEORY; GEOMETRY
AB In models of supersymmetry (SUSY) breaking and mediation, strongly coupled SUSY-breaking sectors can play a significant role in determining the low-energy spectrum of the model. For example, strong dynamics may provide a natural solution to both the SUSY flavor problem and the mu/B mu problem. Recently, it has been suggested that a large class of these models lead to identical boundary conditions at the SUSY breaking scale. These boundary conditions would severely constrain the models' viability. We demonstrate that the boundary conditions are instead sensitive to the details of the hidden sector, so that only specific hidden sectors may be ruled out by phenomenological considerations. We determine the high scale boundary conditions using the operator product expansion of the hidden sector. The techniques used to determine the beta functions are generally applicable to the RG flow of any approximately conformal hidden sector. The discrepancy with previously proposed boundary conditions can be traced to the fact that the renormalization group (RG) flow involves multiple fixed points.
C1 [Craig, Nathaniel J.; Green, Daniel] Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
[Green, Daniel] Stanford Univ, SLAC, Stanford, CA 94305 USA.
RP Craig, NJ (reprint author), Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
EM ncraig@stanford.edu; drgreen@stanford.edu
FU NSERC; Mellam Family Foundation; DOE [DE-AC03-76SF00515]; NSF
[PHY-9870115]; Stanford Institute
FX We are gratefully indebted to Martin Schmaltz for numerous helpful
discussions and probing questions that motivated many of the results in
this paper. We would like to thank Savas Dimopoulos, Michael Dine, David
Shih, Stuart Raby and Mithat Unsal for helpful discussions. We are
especially grateful to Steve Shenker for several extremely enlightening
conversations on the subject of the renormalization group. DG is
supported in part by NSERC, the Mellam Family Foundation, the DOE under
contract DE-AC03-76SF00515 and the NSF under contract PHY-9870115. NJC
is supported in part by the NSF GRFP, the NSF under contract
PHY-9870115, and the Stanford Institute for Theoretical Physics.
NR 21
TC 10
Z9 10
U1 0
U2 0
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1029-8479
J9 J HIGH ENERGY PHYS
JI J. High Energy Phys.
PD SEP
PY 2009
IS 9
AR 113
DI 10.1088/1126-6708/2009/09/113
PG 15
WC Physics, Particles & Fields
SC Physics
GA 505DB
UT WOS:000270667600113
ER
PT J
AU Friedland, A
Giannotti, M
Graesser, ML
AF Friedland, Alexander
Giannotti, Maurizio
Graesser, Michael L.
TI Vector bosons in the Randall-Sundrum 2 and Lykken-Randall models and
unparticles
SO JOURNAL OF HIGH ENERGY PHYSICS
LA English
DT Article
DE Phenomenology of Field Theories in Higher Dimensions
ID CONTINUOUSLY DISTRIBUTED MASS; GAUGED EXTENDED SUPERGRAVITY; EXTRA
DIMENSIONS; FIELD-THEORIES; HIERARCHY PROBLEM; POSITIVE ENERGY; STRING
THEORY; GRAVITY; LOCALIZATION; COLLIDERS
AB Unparticle behavior is shown to be realized in the Randall-Sundrum 2 (RS 2) and the Lykken-Randall (LR) brane scenarios when brane-localized Standard Model currents are coupled to a massive vector field living in the five-dimensional warped background of the RS 2 model. By the AdS/CFT dictionary these backgrounds exhibit certain properties of the unparticle CFT at large N-c and strong 't Hooft coupling. Within the RS 2 model we also examine and contrast in detail the scalar and vector position-space correlators at intermediate and large distances. Unitarity of brane-to-brane scattering amplitudes is seen to imply a necessary and sufficient condition on the positivity of the bulk mass, which leads to the well-known unitarity bound on vector operators in a CFT.
C1 [Friedland, Alexander; Giannotti, Maurizio; Graesser, Michael L.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87540 USA.
[Giannotti, Maurizio] Barry Univ, Miami Shores, FL 33161 USA.
RP Friedland, A (reprint author), Los Alamos Natl Lab, Div Theoret, T-2,MS B285, Los Alamos, NM 87540 USA.
EM friedland@lanl.gov; MGiannotti@mail.barry.edu; graesser@lanl.gov
NR 83
TC 5
Z9 5
U1 0
U2 0
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1029-8479
J9 J HIGH ENERGY PHYS
JI J. High Energy Phys.
PD SEP
PY 2009
IS 9
AR 033
DI 10.1088/1126-6708/2009/09/033
PG 58
WC Physics, Particles & Fields
SC Physics
GA 505DB
UT WOS:000270667600033
ER
PT J
AU Poppitz, E
Unsal, M
AF Poppitz, Erich
Unsal, Mithat
TI Conformality or confinement: (IR)relevance of topological excitations
SO JOURNAL OF HIGH ENERGY PHYSICS
LA English
DT Article
DE Nonperturbative Effects; Confinement; Field Theories in Lower
Dimensions; Lattice Quantum Field Theory
ID SUPERSYMMETRIC GAUGE-THEORIES; CHIRAL PHASE-TRANSITION; BETA-FUNCTION;
SU(N) GAUGE; D-BRANES; INSTANTONS; QCD; HYPERCOLOR; MONOPOLES; BREAKING
AB What distinguishes two asymptotically-free non-abelian gauge theories on R-4, one of which is just below the conformal window boundary and confines, while the other is slightly above the boundary and flows to an infrared conformal field theory? In this work, we aim to answer this question for non-supersymmetric Yang-Mills theories with fermions in arbitrary chiral or vectorlike representations. We use the presence or absence of mass gap for gauge fluctuations as an identifier of the infrared behavior. With the present-day understanding of such gauge theories, the mass gap for gauge fluctuations cannot be computed on R-4. However, recent progress allows its non-perturbative computation on R-3 x S-1 by using either the twisted partition function or deformation theory, for a range of sizes of S-1 depending on the theory. For small number of fermions, N-f, we show that the mass gap increases with increasing radius, due to the non-dilution of monopoles and bions - the topological excitations relevant for confinement on R-3 x S-1. For sufficiently large Nf, we show that the mass gap decreases with increasing radius. In a class of theories, we claim that the decompactification limit can be taken while remaining within the region of validity of semiclassical techniques, giving the first examples of semiclassically solvable Yang-Mills theories at any size S1. For general non-supersymmetric vectorlike or chiral theories, we conjecture that the change in the behavior of the mass gap on R-3 x S-1 as a function of the radius occurs near the lower boundary of the conformal window and give non-perturbative estimates of its value. For vectorlike theories, we compare our estimates of the conformal window with existing lattice results, truncations of the Schwinger-Dyson equations, NSVZ beta function-inspired estimates, and degree of freedom counting criteria. For multi-generation chiral gauge theories, to the best of our knowledge, our estimates of the conformal window are the only known ones.
C1 [Poppitz, Erich] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada.
[Unsal, Mithat] Stanford Univ, SLAC, Stanford, CA 94025 USA.
[Unsal, Mithat] Stanford Univ, Dept Phys, Stanford, CA 94025 USA.
RP Poppitz, E (reprint author), Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada.
EM poppitz@physics.utoronto.ca; unsal@slac.stanford.edu
NR 74
TC 54
Z9 54
U1 0
U2 1
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1029-8479
J9 J HIGH ENERGY PHYS
JI J. High Energy Phys.
PD SEP
PY 2009
IS 9
AR 050
DI 10.1088/1126-6708/2009/09/050
PG 45
WC Physics, Particles & Fields
SC Physics
GA 505DB
UT WOS:000270667600050
ER
PT J
AU Shih, CY
Scown, CD
Soibelman, L
Matthews, HS
Garrett, JH
Dodrill, K
McSurdy, S
AF Shih, Chung Yan
Scown, Corinne D.
Soibelman, Lucio
Matthews, H. Scott
Garrett, James H., Jr.
Dodrill, Keith
McSurdy, Sandra
TI Data Management for Geospatial Vulnerability Assessment of
Interdependencies in US Power Generation
SO JOURNAL OF INFRASTRUCTURE SYSTEMS
LA English
DT Article
ID INFRASTRUCTURE
AB Critical infrastructures maintain our society's stability, security, and quality of life. These systems are also interdependent, which means that the disruption of one infrastructure system can significantly impact the operation of other systems. Because of the heavy reliance on electricity production, it is important to assess possible vulnerabilities. Determining the source of these vulnerabilities can provide insight for risk management and emergency response efforts. This research uses data warehousing and visualization techniques to explore the interdependencies between coal mines, rail transportation, and electric power plants. By merging geospatial and nonspatial data, we are able to model the potential impacts of a disruption to one or more mines, rail lines, or power plants, and visually display the results using a geographical information system. A scenario involving a severe earthquake in the New Madrid Seismic Zone is used to demonstrate the capabilities of the model when given input in the form of a potentially impacted area. This type of interactive analysis can help decision makers to understand the vulnerabilities of the coal distribution network and the potential impact it can have on electricity production.
C1 [Shih, Chung Yan; Soibelman, Lucio; Matthews, H. Scott; Garrett, James H., Jr.] Carnegie Mellon Univ, Dept Civil & Environm Engn, Pittsburgh, PA 15213 USA.
[Matthews, H. Scott] Carnegie Mellon Univ, Dept Engn & Publ Policy, Pittsburgh, PA 15213 USA.
[Scown, Corinne D.] Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA.
[McSurdy, Sandra] US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
[Dodrill, Keith] US DOE, Natl Energy Technol Lab, Morgantown, WV 26507 USA.
RP Matthews, HS (reprint author), Carnegie Mellon Univ, Dept Civil & Environm Engn, 5000 Forbes Ave, Pittsburgh, PA 15213 USA.
EM chungyas@andrew.cmu.edu; corinne@alumni.cmu.edu; lucio@andrew.cmu.edu;
hsm@cmu.edu; garrett@cmu.edu; keith.dodrill@netl.doe.gov;
sandra.mcsurdy@netl.doe.gov
RI Scown, Corinne/D-1253-2013
FU RDS [DE-AM26-04NT41817.305.01.21.002]; NETL
[DE-AM26-04NT41817.305.01.21.002]
FX The writers acknowledge RDS and NETL for their support of the project
under Grant No. DE-AM26-04NT41817.305.01.21.002.
NR 36
TC 3
Z9 3
U1 3
U2 14
PU ASCE-AMER SOC CIVIL ENGINEERS
PI RESTON
PA 1801 ALEXANDER BELL DR, RESTON, VA 20191-4400 USA
SN 1076-0342
J9 J INFRASTRUCT SYST
JI J. Infrastruct. Syst.
PD SEP
PY 2009
VL 15
IS 3
BP 179
EP 189
DI 10.1061/(ASCE)1076-0342(2009)15:3(179)
PG 11
WC Engineering, Civil
SC Engineering
GA 484QF
UT WOS:000269061200005
ER
PT J
AU Chen, J
Fang, HR
Saad, Y
AF Chen, Jie
Fang, Haw-ren
Saad, Yousef
TI Fast Approximate kNN Graph Construction for High Dimensional Data via
Recursive Lanczos Bisection
SO JOURNAL OF MACHINE LEARNING RESEARCH
LA English
DT Article
DE nearest neighbors graph; high dimensional data; divide and conquer;
Lanczos algorithm; spectral method
ID NEAREST-NEIGHBOR GRAPH; FIXED-RADIUS; POINT SETS; REDUCTION; ALGORITHM;
RECOGNITION; COMPLEXITY
AB Nearest neighbor graphs are widely used in data mining and machine learning. A brute-force method to compute the exact kNN graph takes Theta(dn(2)) time for n data points in the d dimensional Euclidean space. We propose two divide and conquer methods for computing an approximate kNN graph in Theta(dn(t)) time for high dimensional data (large d). The exponent t is an element of (1, 2) is an increasing function of an internal parameter a which governs the size of the common region in the divide step. Experiments show that a high quality graph can usually be obtained with small overlaps, that is, for small values of t. A few of the practical details of the algorithms are as follows. First, the divide step uses an inexpensive Lanczos procedure to perform recursive spectral bisection. After each conquer step, an additional refinement step is performed to improve the accuracy of the graph. Finally, a hash table is used to avoid repeating distance calculations during the divide and conquer process. The combination of these techniques is shown to yield quite effective algorithms for building kNN graphs.
C1 [Chen, Jie; Saad, Yousef] Univ Minnesota, Dept Comp Sci & Engn, Minneapolis, MN 55455 USA.
[Fang, Haw-ren] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA.
RP Chen, J (reprint author), Univ Minnesota, Dept Comp Sci & Engn, Minneapolis, MN 55455 USA.
EM JCHEN@CS.UMN.EDU; HRFANG@MCS.ANL.GOV; SAAD@CS.UMN.EDU
NR 40
TC 64
Z9 65
U1 0
U2 10
PU MICROTOME PUBL
PI BROOKLINE
PA 31 GIBBS ST, BROOKLINE, MA 02446 USA
SN 1532-4435
J9 J MACH LEARN RES
JI J. Mach. Learn. Res.
PD SEP
PY 2009
VL 10
BP 1989
EP 2012
PG 24
WC Automation & Control Systems; Computer Science, Artificial Intelligence
SC Automation & Control Systems; Computer Science
GA 527DE
UT WOS:000272346100001
ER
PT J
AU Demas, V
Bernhardt, A
Malba, V
Adams, KL
Evans, L
Harvey, C
Maxwell, RS
Herberg, JL
AF Demas, Vasiliki
Bernhardt, Anthony
Malba, Vince
Adams, Kristl L.
Evans, Lee
Harvey, Christopher
Maxwell, Robert S.
Herberg, Julie L.
TI Electronic characterization of lithographically patterned microcoils for
high sensitivity NMR detection
SO JOURNAL OF MAGNETIC RESONANCE
LA English
DT Article
DE NMR; RF microcoil; Laser lithography; Portable NMR; Micro receiver; Wire
wound microcoils; Quality factor; Microfabrication; 3D pantography
ID NUCLEAR-MAGNETIC-RESONANCE; LOW-TEMPERATURE MAGNETISM;
ANTI-FERROMAGNETIC CHAIN; LASER-LATHE LITHOGRAPHY; NANOLITER-VOLUME;
CAPILLARY-ELECTROPHORESIS; H-1-NMR DETECTION; DESIGN; SPECTROSCOPY;
PLANAR
AB Nuclear magnetic resonance (NMR) offers a non-destructive, powerful, structure-specific analytical method for the identification of chemical and biological systems. The use of radio frequency (RF) microcoils has been shown to increase the sensitivity in mass-limited samples. Recent advances in micro-receiver technology have further demonstrated a substantial increase in mass sensitivity [D.L. Olson, T.L. Peck, A.G. Webb, R.L. Magin, J.V. Sweedler, High-resolution microcoil H-1-NMR for mass-limited, nanoliter-volume samples, Science 270 (5244) (1995) 1967-1970]. Lithographic methods for producing solenoid microcoils possess a level of flexibility and reproducibility that exceeds previous production methods, such as hand winding microcoils. This paper presents electrical characterizations of RF microcoils produced by a unique laser lithography system that can pattern three dimensional surfaces and compares calculated and experimental results to those for wire wound RF microcoils. We show that existing optimization conditions for RF coil design still hold true for RF microcoils produced by lithography. Current lithographic microcoils show somewhat inferior performance to wire wound RF microcoils due to limitations in the existing electroplating technique. In principle, however, when the pitch of the RF microcoil is less than 100 pm lithographic coils should show comparable performance to wire wound coils. In the cases of larger pitch, wire cross sections can be significantly larger and resistances lower than microfabricated conductors. Published by Elsevier Inc.
C1 [Demas, Vasiliki; Bernhardt, Anthony; Malba, Vince; Adams, Kristl L.; Evans, Lee; Harvey, Christopher; Maxwell, Robert S.; Herberg, Julie L.] Lawrence Livermore Natl Lab, Sci & Technol Principle Directorate, Livermore, CA 94550 USA.
RP Herberg, JL (reprint author), Lawrence Livermore Natl Lab, Sci & Technol Principle Directorate, 7000 E Ave, Livermore, CA 94550 USA.
EM herberg1@llnl.gov
RI Adams, Kristl/A-5748-2009
FU U.S. Department of Energy [DE-AC52-07NA27344]
FX We thank the LLNL SEGRF graduate student fellowship program for part of
this work [V.D.]. This work was performed under the auspices of the U.S.
Department of Energy by Lawrence Livermore National Laboratory under
Contract DE-AC52-07NA27344.
NR 42
TC 14
Z9 14
U1 1
U2 19
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 1090-7807
J9 J MAGN RESON
JI J. Magn. Reson.
PD SEP
PY 2009
VL 200
IS 1
BP 56
EP 63
DI 10.1016/j.jmr.2009.06.003
PG 8
WC Biochemical Research Methods; Physics, Atomic, Molecular & Chemical;
Spectroscopy
SC Biochemistry & Molecular Biology; Physics; Spectroscopy
GA 483KS
UT WOS:000268964700008
PM 19581116
ER
PT J
AU Liberati, M
Chopdekar, RV
Mehta, V
Arenholz, E
Suzuki, Y
AF Liberati, M.
Chopdekar, R. V.
Mehta, V.
Arenholz, E.
Suzuki, Y.
TI Epitaxial growth and characterization of CaVO3 thin films
SO JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
LA English
DT Article
DE Magnetic oxide; Vanadium perovskite; Thin film; Pauli paramagnetic;
Pulsed laser deposition; X-ray absorption
ID METAL-INSULATOR-TRANSITION; PEROVSKITE; DIFFRACTION; TRANSPORT
AB Epitaxial thin films of CaVO3 were synthesized on SrTiO3, LaAlO3 and (La0.27Sr0.73)(Al0.65Ta0.35)O-3 substrates by pulsed laser deposition. All CaVO3 films, independent of epitaxial strain, exhibit metallic and Pauli paramagnetic behavior as CaVO3 single crystals. X-ray absorption measurements confirmed the 4+ valence state for Vanadium ions. With prolonged air exposure, an increasing amount of V3+ is detected and is attributed to oxygen loss in the near surface region of the films. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Liberati, M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Liberati, M.; Chopdekar, R. V.; Mehta, V.; Suzuki, Y.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
[Mehta, V.; Suzuki, Y.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Chopdekar, R. V.] Cornell Univ, Sch Appl Phys, Ithaca, NY USA.
RP Liberati, M (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, 1 Cyclotron Rd,MS 6R2100, Berkeley, CA 94720 USA.
EM mliberati@lbl.gov
RI Chopdekar, Rajesh/D-2067-2009
OI Chopdekar, Rajesh/0000-0001-6727-6501
FU Director, Office of Science, Office of Basic Energy Sciences; US
Department of Energy [DE-AC0205CH11231]; National Science Foundation
FX We would like to acknowledge F. Wong for helpful discussions. This work
and the Advanced Light Sourceare supported by the Director, Office of
Science, Office of Basic Energy Sciences, of the US Department of Energy
under Contract no. DE-AC0205CH11231. RVC acknowledges support from the
National Science Foundation.
NR 13
TC 3
Z9 3
U1 3
U2 38
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0304-8853
J9 J MAGN MAGN MATER
JI J. Magn. Magn. Mater.
PD SEP
PY 2009
VL 321
IS 18
BP 2852
EP 2854
DI 10.1016/j.jmmm.2009.04.037
PG 3
WC Materials Science, Multidisciplinary; Physics, Condensed Matter
SC Materials Science; Physics
GA 456EJ
UT WOS:000266823200031
ER
PT J
AU Herbert, EG
Oliver, WC
de Boer, MP
Pharr, GM
AF Herbert, Erik G.
Oliver, Warren C.
de Boer, Maarten P.
Pharr, George M.
TI Measuring the elastic modulus and residual stress of freestanding thin
films using nanoindentation techniques
SO JOURNAL OF MATERIALS RESEARCH
LA English
DT Article
ID MECHANICAL-PROPERTIES; GOLD-FILMS; INSTRUMENTED INDENTATION; SPHERICAL
INDENTATION; TENSILE BEHAVIOR; GRAINED FILMS; PART II; STRENGTH;
METHODOLOGY; SUITE
AB A new method is proposed to determine the elastic modulus and residual stress of freestanding thin films based on nanoindentation techniques. The experimentally measured stiffness-displacement response is applied to a simple membrane model that assumes the film deformation is dominated by stretching as opposed to bending. Dimensional analysis is used to identify appropriate limitations of the proposed model. Experimental verification of the method is demonstrated for Al/0.5 wt% Cu films nominally 22 mu m wide, 0.55 mu m thick, and 150, 300, and 500 mu m long. The estimated modulus for the four freestanding films match the value measured by electrostatic techniques to within 2%, and the residual stress to within 19.1%. The difference in residual stress can be completely accounted for by thermal expansion and a modest change in temperature of 3 degrees C. Numerous experimental pitfalls are identified and discussed. Collectively, these data and the technique used to generate them should help future investigators make more accurate and precise measurements of the mechanical properties of freestanding thin films using nanoindentation.
C1 [Herbert, Erik G.; Pharr, George M.] Univ Tennessee, Coll Engn, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
[Oliver, Warren C.] Agilent Technol, Nanotechnol Measurements Div, Res & Dev, Oak Ridge, TN 37830 USA.
[de Boer, Maarten P.] Sandia Natl Labs, MEMS Technol Dept, Albuquerque, NM 87185 USA.
[Pharr, George M.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
RP Herbert, EG (reprint author), Univ Tennessee, Coll Engn, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
EM eherbert@utk.edu
RI de Boer, Maarten/C-1525-2013
OI de Boer, Maarten/0000-0003-1574-9324
FU Sandia Corporation; Lockheed Martin Company; United States Department of
Energy [DE-AC04-94AL85000]
FX Sandia is a multiprogram laboratory operated by Sandia Corporation, a
Lockheed Martin Company, for the United States Department of Energy
under Contract DE-AC04-94AL85000.
NR 31
TC 9
Z9 9
U1 1
U2 32
PU MATERIALS RESEARCH SOC
PI WARRENDALE
PA 506 KEYSTONE DR, WARRENDALE, PA 15086 USA
SN 0884-2914
J9 J MATER RES
JI J. Mater. Res.
PD SEP
PY 2009
VL 24
IS 9
BP 2974
EP 2985
DI 10.1557/JMR.2009.0360
PG 12
WC Materials Science, Multidisciplinary
SC Materials Science
GA 491NH
UT WOS:000269585300030
ER
PT J
AU Ma, BH
Kwon, DK
Narayanan, M
Balachandran, U
AF Ma, Beihai
Kwon, Do-Kyun
Narayanan, Manoj
Balachandran, U. (Balu)
TI Dielectric properties and energy storage capability of antiferroelectric
Pb0.92La0.08Zr0.95Ti0.05O3 film-on-foil capacitors
SO JOURNAL OF MATERIALS RESEARCH
LA English
DT Article
ID THIN-FILMS; METAL FOILS; CERAMICS
AB Antiferroelectric (AFE) Pb0.92La0.08Zr0.95Ti0.05O3 (PLZT) films were grown on nickel foils with lanthanum nickel oxide buffer by chemical solution deposition. We observed field-induced AFE-to-ferroelectric (FE) phase transition. The electric field for the AFE-to-FE phase transition (E-AF approximate to 270 kV/cm) and that for the reverse phase transition (E-FA approximate to 230 kV/cm) were measured at room temperature on samples with PUT films of approximate to 1-mu m thickness. Relative permittivity of approximate to 560 and dielectric loss of <0.05 were measured near zero DC bias field. Hysteresis loop analysis showed that energy densities of approximate to 53 and 37 J/cm(3) can be stored and recovered from the film-on-foil capacitors at 25 and 150 degrees C, respectively. Highly accelerated life tests were conducted. The projected mean time to failure is >5000 h when the capacitors are operated at room temperature with an applied field of approximate to 300 kV/cm.
C1 [Ma, Beihai; Kwon, Do-Kyun; Narayanan, Manoj; Balachandran, U. (Balu)] Argonne Natl Lab, Div Energy Syst, Argonne, IL 60439 USA.
RP Ma, BH (reprint author), Argonne Natl Lab, Div Energy Syst, Argonne, IL 60439 USA.
EM bma@anl.gov
RI Narayanan, Manoj/A-4622-2011; Ma, Beihai/I-1674-2013
OI Ma, Beihai/0000-0003-3557-2773
FU United States Department of Energy; Office of Vehicle Technologies
Program [DE-AC02-06CH11357]
FX This work was funded by the United States Department of Energy, Office
of Vehicle Technologies Program, under Contract No. DE-AC02-06CH11357.
NR 13
TC 41
Z9 41
U1 5
U2 50
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0884-2914
J9 J MATER RES
JI J. Mater. Res.
PD SEP
PY 2009
VL 24
IS 9
BP 2993
EP 2996
DI 10.1557/JMR.2009.0349
PG 4
WC Materials Science, Multidisciplinary
SC Materials Science
GA 491NH
UT WOS:000269585300032
ER
PT J
AU Blair, MW
Levy, MR
Grimes, RW
Uberuaga, BP
Jiang, C
Valdez, JA
Williams, JJ
Tang, M
Stanek, CR
Sickafus, KE
AF Blair, Michael W.
Levy, Mark R.
Grimes, Robin W.
Uberuaga, Blas P.
Jiang, Chao
Valdez, James A.
Williams, Josh J.
Tang, Ming
Stanek, Christopher R.
Sickafus, Kurt E.
TI Charge compensation in an irradiation-induced phase of delta-Sc4Zr3O12
SO JOURNAL OF MATERIALS SCIENCE
LA English
DT Letter
ID INITIO MOLECULAR-DYNAMICS; TOTAL-ENERGY CALCULATIONS; AUGMENTED-WAVE
METHOD; BASIS-SET; TRANSITION; ZIRCONIA; CENTERS; SURFACE; METALS
C1 [Blair, Michael W.] Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA.
[Levy, Mark R.] British Energy Plc, Gloucester GL4 3RS, England.
[Grimes, Robin W.] Univ London Imperial Coll Sci Technol & Med, Dept Mat, London SW7 2AZ, England.
[Uberuaga, Blas P.; Jiang, Chao; Valdez, James A.; Williams, Josh J.; Tang, Ming; Stanek, Christopher R.; Sickafus, Kurt E.] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
RP Blair, MW (reprint author), Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA.
EM mblair@lanl.gov
RI Jiang, Chao/A-2546-2011
NR 29
TC 6
Z9 6
U1 1
U2 8
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0022-2461
EI 1573-4803
J9 J MATER SCI
JI J. Mater. Sci.
PD SEP
PY 2009
VL 44
IS 17
BP 4754
EP 4757
DI 10.1007/s10853-009-3722-2
PG 4
WC Materials Science, Multidisciplinary
SC Materials Science
GA 477BW
UT WOS:000268492800035
ER
PT J
AU Hamza, E
Michalakis, S
Nachtergaele, B
Sims, R
AF Hamza, Eman
Michalakis, Spyridon
Nachtergaele, Bruno
Sims, Robert
TI Approximating the ground state of gapped quantum spin systems
SO JOURNAL OF MATHEMATICAL PHYSICS
LA English
DT Article; Proceedings Paper
CT Workshop on Integrable Quantum Systems and Solvable Statistical
Mechanics Models
CY JUN 30-JUL 05, 2008
CL CRM, Montreal, CANADA
HO CRM
ID THEOREM
AB We consider quantum spin systems defined on finite sets V equipped with a metric. In typical examples, V is a large, but finite subset of Z(d). For finite range Hamiltonians with uniformly bounded interaction terms and a unique, gapped ground state, we demonstrate a locality property of the corresponding ground state projector. In such systems, this ground state projector can be approximated by the product of observables with quantifiable supports. In fact, given any subset X subset of V the ground state projector can be approximated by the product of two projections, one supported on X and one supported on X(c), and a bounded observable supported on a boundary region in such a way that as the boundary region increases, the approximation becomes better. This result generalizes to multidimensional models, a result of Hastings that was an important part of his proof of an area law in one dimension ["An area law for one dimensional quantum systems," J. Stat. Mech.: Theory Exp. 2007, 08024]. (c) 2009 American Institute of Physics. [DOI: 10.1063/1.3206662]
C1 [Hamza, Eman] Michigan State Univ, Dept Math, E Lansing, MI 48823 USA.
[Michalakis, Spyridon] Los Alamos Natl Lab, Ctr Nonlinear Studies & T4, Los Alamos, NM 87545 USA.
[Nachtergaele, Bruno] Univ Calif Davis, Dept Math, Davis, CA 95616 USA.
[Sims, Robert] Univ Arizona, Dept Math, Tucson, AZ 85721 USA.
RP Hamza, E (reprint author), Cairo Univ, Dept Phys, Fac Sci, Cairo 12613, Egypt.
EM eman.hamza07@gmail.com; spiros@lanl.gov; bxn@math.ucdavis.edu;
rsims@math.arizona.edu
RI Nachtergaele, Bruno/A-7508-2008;
OI Nachtergaele, Bruno/0000-0002-7835-3776; , eman/0000-0002-5091-4404
NR 17
TC 12
Z9 12
U1 0
U2 1
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0022-2488
J9 J MATH PHYS
JI J. Math. Phys.
PD SEP
PY 2009
VL 50
IS 9
AR 095213
DI 10.1063/1.3206662
PG 16
WC Physics, Mathematical
SC Physics
GA 501JW
UT WOS:000270378800014
ER
PT J
AU Ebenstein, Y
Gassman, N
Kim, S
Weiss, S
AF Ebenstein, Yuval
Gassman, Natalie
Kim, Soohong
Weiss, Shimon
TI Combining atomic force and fluorescence microscopy for analysis of
quantum-dot labeled protein-DNA complexes
SO JOURNAL OF MOLECULAR RECOGNITION
LA English
DT Article; Proceedings Paper
CT 2nd International AFM BioMed Conference on AFM in Life Sciences and
Medicine
CY OCT 16-18, 2008
CL Monterey, CA
ID BIOTIN INTERACTIONS
AB Atomic force microscopy (AFM) and fluorescence microscopy are widely used for the study of protein-DNA interactions. While AFM excels in its ability to elucidate structural detail and spatial arrangement, it lacks the ability to distinguish between similarly sized objects in a complex system. This information is readily accessible to optical imaging techniques via site-specific fluorescent labels, which enable the direct detection and identification of multiple components simultaneously. Here, we show how the utilization of semiconductor quantum dots (QDs), serving as contrast agents for both AFM topography and fluorescence imaging, facilitates the combination of both imaging techniques, and with the addition of a flow based DNA extension method for sample deposition, results in a powerful tool for the study of protein-DNA complexes. We demonstrate the inherent advantages of this novel combination of techniques by imaging individual RNA polymerases (RNAP) on T7 genomic DNA. Copyright (C) 2009 John Wiley & Sons, Ltd.
C1 [Ebenstein, Yuval] Univ Calif Los Angeles, DOE Inst Genom & Proteom, Dept Chem & Biochem, Los Angeles, CA 90095 USA.
[Weiss, Shimon] Univ Calif Los Angeles, David Geffen Sch Med, Dept Physiol, Los Angeles, CA 90095 USA.
RP Ebenstein, Y (reprint author), Univ Calif Los Angeles, DOE Inst Genom & Proteom, Dept Chem & Biochem, Los Angeles, CA 90095 USA.
EM uv@chem.ucla.edu
RI Ebenstein, Yuval/B-4420-2009; weiss, shimon/B-4164-2009;
OI Ebenstein, Yuval/0000-0002-7107-7529; weiss, shimon/0000-0002-0720-5426;
Gassman, Natalie/0000-0002-8488-2332
FU NIBIB NIH HHS [R01 EB000312, R01 EB000312-09, R01-EB000312]; NIGMS NIH
HHS [R01 GM069709]
NR 23
TC 16
Z9 16
U1 1
U2 15
PU JOHN WILEY & SONS LTD
PI CHICHESTER
PA THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND
SN 0952-3499
J9 J MOL RECOGNIT
JI J. Mol. Recognit.
PD SEP-OCT
PY 2009
VL 22
IS 5
BP 397
EP 402
DI 10.1002/jmr.956
PG 6
WC Biochemistry & Molecular Biology; Biophysics
SC Biochemistry & Molecular Biology; Biophysics
GA 488TW
UT WOS:000269374000008
PM 19452448
ER
PT J
AU Fiantis, D
Nelson, M
Van Ranst, E
Shamshuddin, J
Qafoku, NP
AF Fiantis, Dian
Nelson, Malik
Van Ranst, Eric
Shamshuddin, Jusop
Qafoku, Nikolla P.
TI Chemical Weathering of New Pyroclastic Deposits from Mt. Merapi (Java),
Indonesia
SO JOURNAL OF MOUNTAIN SCIENCE
LA English
DT Review
DE Weathering index; Pyroclastic deposit; Andesite; Merapi; Indonesia
ID VOLCANIC ASH SOILS; PARTICLE DENSITY; SILICATE ROCKS; FOREST SOILS;
NEW-ZEALAND; ST-HELENS; TEPHRA; ERUPTIONS; MINERALOGY; ANDISOLS
AB The Java Island, Indonesia with abundant amount of pyroclastic deposits is located in the very active and dynamic Pacific Ring of Fires. Studying the geochemical weathering indices of these pyroclastic deposits is important to get a clear picture about weathering profiles on deposits resulting from the eruption of Mt. Merapi. Immediately after the first phase of the eruption (March to June 2006), moist and leached pyroclastic deposits were collected. These pyroclastic deposits were found to be composed of volcanic glass, plagioclase feldspar in various proportions, orthopyroxene, clinopyroxene, olivine, amphibole and titanomagnetite. The total elemental composition of the bulk samples (including trace elements and heavy metals) was determined by wet chemical methods and X-ray fluorescence (XRF) analyses. Weathering of the pyroclastic deposits was studied using various weathering indices. The Ruxton ratio, weathering index of Parker, Vought resudual index and chemical index of weathering of moist pyroclastic deposits were lower than those of the leached samples, but the alteration indices (chemical and plagioclase) were slightly higher in the moist compared to the leached pyroclastic deposits.
C1 [Fiantis, Dian] Univ Andalas Kampus Unand Limau Manis, Dept Soil Sci, Fac Agr, Padang 25163, Indonesia.
[Nelson, Malik] Polytech Agr Univ Andalas Kampus Politani Tanjung, Dept Crop Estate, Kota 50, Sumbar, Indonesia.
[Van Ranst, Eric] Univ Ghent, Dept Geol & Soil Sci WE13, Lab Soil Sci, B-9000 Ghent, Belgium.
[Shamshuddin, Jusop] Univ Putra Malaysia, Dept Land Management, Fac Agr, Serdang 43400, Selangor, Malaysia.
[Qafoku, Nikolla P.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Fiantis, D (reprint author), Univ Andalas Kampus Unand Limau Manis, Dept Soil Sci, Fac Agr, Padang 25163, Indonesia.
EM dianfiantis@faperta.unand.ac.id
OI Qafoku, Nikolla P./0000-0002-3258-5379
FU Directorate of Higher Education Department of National Education of
Republic of Indonesia [005/SP3/PP/DP2M/II/2006-2007]; Ministry of
Research and Technology of the Republic Indonesia [97/M/Kp/XI/2007]
FX Parts of this study were supported by the Directorate of Higher
Education Department of National Education of Republic of Indonesia
under Fundamental Research Grant no: 005/SP3/PP/DP2M/II/2006-2007,
granted to the first author and by the Ministry of Research and
Technology of the Republic Indonesia (Fundamental Research Intensive
Program with grant no. 97/M/Kp/XI/2007) granted to first and second
authors.
NR 105
TC 4
Z9 4
U1 1
U2 28
PU SCIENCE PRESS
PI BEIJING
PA 16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA
SN 1672-6316
J9 J MT SCI-ENGL
JI J Mt. Sci.
PD SEP
PY 2009
VL 6
IS 3
BP 240
EP 254
DI 10.1007/s11629-009-1041-3
PG 15
WC Environmental Sciences
SC Environmental Sciences & Ecology
GA 482JR
UT WOS:000268882900004
ER
PT J
AU Stein, SC
Ganguly, K
Belfield, CM
Xu, XS
Swanson, EW
Chen, XH
Browne, KD
Johnson, VE
Smith, DH
LeBold, DG
Cines, DB
Muzykhantov, VR
AF Stein, Sherman C.
Ganguly, Kumkum
Belfield, Caitlin M.
Xu, Xiangsheng
Swanson, Edward W.
Chen, Xiao-Han
Browne, Kevin D.
Johnson, Victoria E.
Smith, Douglas H.
LeBold, David G.
Cines, Douglas B.
Muzykhantov, Vladimir R.
TI Erythrocyte-Bound Tissue Plasminogen Activator is Neuroprotective in
Experimental Traumatic Brain Injury
SO JOURNAL OF NEUROTRAUMA
LA English
DT Article; Proceedings Paper
CT Conference of the International-Neurotrauma-Society
CY 2006
CL Rotterdam, NETHERLANDS
SP Int Neurotrauma Soc
DE blood-brain barrier; microclots; tissue plasminogen activator; traumatic
brain injury
ID RECEPTOR-RELATED PROTEIN; PROPHYLACTIC FIBRINOLYSIS; IN-VIVO; RAT;
CLEARANCE; AFFINITY; DAMAGE; TPA
AB The purpose of this study was to test the effects of exogenous tissue plasminogen activator (tPA) in traumatic brain injury (TBI). We tested two different tPA formulations, free tPA and tPA bound to erythrocytes (RBC/tPA). Vehicle and each of the tPA treatments were injected intravenously into anesthetized rats 15 min after moderate lateral fluid percussion injury. The animals were sacrificed at 2 days for calculating microclot burden (n = 13) and IgG staining area (n = 13) in the brain sections as indicators of post-traumatic thrombosis and blood-brain barrier (BBB) breakdown, respectively. Another set of injured animals treated in the same way were sacrificed at 7 days to compare cortical lesion volumes (n = 28) and CA3 hippocampal cell loss (n = 24). All evaluations were done blinded with respect to treatment. No significant differences were found with respect to microclot burden or IgG staining volume. Injection of wild-type tPA caused significantly (p < 0.05) larger cortical injuries and greater cerebral hemorrhage. In contrast, there was significantly less cortical injury (p < 0.01) and hippocampal cell loss (p < 0.01) in the RBC/tPA group than in all other groups. These results reveal that RBC/tPA is more neuroprotective in experimental TBI than is unbound tPA.
C1 [Stein, Sherman C.; Belfield, Caitlin M.; Xu, Xiangsheng; Swanson, Edward W.; Chen, Xiao-Han; Browne, Kevin D.; Johnson, Victoria E.; Smith, Douglas H.; LeBold, David G.] Univ Penn, Sch Med, Dept Neurosurg, Philadelphia, PA 19106 USA.
[Cines, Douglas B.] Univ Penn, Sch Med, Dept Pathol & Lab Med, Philadelphia, PA 19106 USA.
[Muzykhantov, Vladimir R.] Univ Penn, Sch Med, Inst Environm Med, Inst Translat Med, Philadelphia, PA 19106 USA.
[Muzykhantov, Vladimir R.] Univ Penn, Sch Med, Dept Pharmacol, Philadelphia, PA 19106 USA.
[Ganguly, Kumkum] Los Alamos Natl Lab, Div B, Los Alamos, NM USA.
RP Stein, SC (reprint author), Univ Penn, Sch Med, Dept Neurosurg, 310 Spruce St, Philadelphia, PA 19106 USA.
EM sherman.stein@uphs.upenn.edu
RI smith, douglas/A-1321-2007
FU NCI NIH HHS [R01 CA83121]; NHLBI NIH HHS [R01 HL07971, R01
HL077760-01A2, R01 HL090697, R01 HL090697-01A1, R01 HL76206, R01
HL76406, R01 HL81864]; NINDS NIH HHS [R01 NS053410]
NR 28
TC 15
Z9 17
U1 0
U2 4
PU MARY ANN LIEBERT INC
PI NEW ROCHELLE
PA 140 HUGUENOT STREET, 3RD FL, NEW ROCHELLE, NY 10801 USA
SN 0897-7151
J9 J NEUROTRAUM
JI J. Neurotrauma
PD SEP
PY 2009
VL 26
IS 9
BP 1585
EP 1592
DI 10.1089/neu.2008.0720
PG 8
WC Critical Care Medicine; Clinical Neurology; Neurosciences
SC General & Internal Medicine; Neurosciences & Neurology
GA 489NG
UT WOS:000269426200015
PM 19331516
ER
PT J
AU Yates, SJ
McClellan, KJ
Nino, JC
AF Yates, S. J.
McClellan, K. J.
Nino, J. C.
TI The effect of processing on the thermal diffusivity of MgO-Nd2Zr2O7
composites for inert matrix materials
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
ID FUEL; PLUTONIUM; CONDUCTIVITY; PYROCHLORE; FABRICATION; OXIDE; CERAMICS;
BEHAVIOR; TARGETS; POWDERS
AB Oxides possess many of the required properties suitable for an inert matrix fuel in light water reactors, however, their primary disadvantage is low thermal conductivity. Composites are being investigated to maximize the thermal conductivity of the inert matrix fuel by using thermally conductive MgO as the primary phase while improving its hot water corrosion resistance through the addition of a second phase acting as a hydration barrier. Inert matrix fuel candidate MgO-Nd2Zr2O7 composites were synthesized with multiple processing methods, the composite powders were characterized, the resulting microstructures quantitatively analyzed, and the thermal diffusivity of the composites was measured. Among the four processing methods investigated, ball milling and high-energy shaker blending produced the most homogeneous microstructures with a negligible amount of MgO and Nd2Zr2O7 heterogeneities. An effect of processing on the properties of the composites manifests as a larger variation in the thermal diffusivity in pellets processed by methods that produce a higher quantity and frequency of MgO and Nd2Zr2O7 heterogeneities than in methods that produce negligible amounts of heterogeneities. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Yates, S. J.; Nino, J. C.] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA.
[Yates, S. J.; McClellan, K. J.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Yates, SJ (reprint author), Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA.
EM sjdyates@yahoo.com
RI Nino, Juan/A-6496-2008
OI Nino, Juan/0000-0001-8256-0535
FU Department of Energy [DE-FC07 - 51D14647]; Global Nuclear Energy
Partnership (AFCI)
FX The authors would like to thank the Department of Energy for their
support of this project under the Nuclear Energy Research Initiative
(NERI) award DE-FC07 - 51D14647 and the Global Nuclear Energy
Partnership (AFCI).
NR 32
TC 7
Z9 7
U1 0
U2 4
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
J9 J NUCL MATER
JI J. Nucl. Mater.
PD SEP 1
PY 2009
VL 393
IS 2
BP 203
EP 211
DI 10.1016/j.jnucmat.2009.06.006
PG 9
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA 499UJ
UT WOS:000270251400001
ER
PT J
AU Holliday, K
Hartmann, T
Poineau, F
Kennedy, JR
Czerwinski, K
AF Holliday, Kiel
Hartmann, Thomas
Poineau, Frederic
Kennedy, J. Rory
Czerwinski, Ken
TI Synthesis and characterization of zirconia-magnesia inert matrix fuel:
Uranium homolog studies
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
ID PRESSURIZED-WATER REACTORS; PLUTONIUM DISPOSITION; MGO-ZRO2 CERAMICS;
THORIA FUELS; FABRICATION; BEHAVIOR
AB X-ray powder diffraction, X-ray fluorescence, microscopy, X-ray absorption fine Structure, and electron probe microanalysis were used to characterize ZrO(2)-MgO inert matrix fuel containing UO(2) (as a fissile element and a Pu homolog) and Er(2)O(3) as a burnable poison. A large composition range of MgO and ZrO(2) was evaluated to determine total concentrations, local environment, phases present, phase mixing, and phase composition. It was found that most compositions of the material consist of two phases: MgO (periclase) and ZrO(2) (cubic zirconia). The zirconia phase incorporates up to 5% (wt/wt) MgO and up to 20% and 10% (Wt/Wt) UO(2) and Er(2)O(3) respectively. This allows the fissile material and burnable poison to be incorporated into the zirconia crystal structure and defines the limits of this isomorphic substitution. The bond deformation due to the isomorphic substitution of uranium was determined by X-ray absorption fine structure. The MgO phase remains pure, which will enable design optimization of the overall thermophysical properties of the inert matrix fuel in regard to thermal diffusivity and thermal conductivity. This characterization data will be used in future studies to correlate the dissolution behavior of inert matrix material containing plutonium. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Holliday, Kiel; Hartmann, Thomas; Poineau, Frederic; Czerwinski, Ken] Univ Nevada, Harry Reid Ctr Environm Studies, Las Vegas, NV 89154 USA.
[Kennedy, J. Rory] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
RP Holliday, K (reprint author), Univ Nevada, Harry Reid Ctr Environm Studies, Las Vegas, NV 89154 USA.
EM kielholliday@cox.net
FU US Department of Energy, Office of Science, Office of Basic Energy
Sciences [DE-AC02-06CH11357, DE-FG07-01AL67358]
FX The authors would like to thank Dr. Nadia Leyarovska at beamline 12 of
the Advanced Photon Source at Argonne National Lab for her expertise
with regards to XAFS analysis. We would also like to thank Dr. Robert
Fairhurst and Clay Crow of University of Nevada Las Vegas for their
expertise with the X-ray fluorescence, secondary electron microscope and
the electron probe microanalyzer. Use of the Advanced Photon Source was
supported by the US Department of Energy, Office of Science, Office of
Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. This
project was funded under the UNLV Transmutation Research Program
administered by the Harry Reid Center for Environmental Studies under
the auspices of the US Department of Energy, Office of Nuclear Energy
(Cooperative Agreement No. DE-FG07-01AL67358).
NR 19
TC 11
Z9 11
U1 1
U2 6
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
J9 J NUCL MATER
JI J. Nucl. Mater.
PD SEP 1
PY 2009
VL 393
IS 2
BP 224
EP 229
DI 10.1016/j.jnucmat.2009.06.007
PG 6
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA 499UJ
UT WOS:000270251400003
ER
PT J
AU Sencer, BH
Kennedy, JR
Cole, JI
Malloy, SA
Garner, FA
AF Sencer, B. H.
Kennedy, J. R.
Cole, J. I.
Malloy, S. A.
Garner, F. A.
TI Microstructural analysis of an HT9 fuel assembly duct irradiated in FFTF
to 155 dpa at 443 degrees C
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
ID FERRITIC/MARTENSITIC STEEL DEVELOPMENT; FERRITIC-MARTENSITIC STEELS;
RESEARCH-AND-DEVELOPMENT; HIGH NEUTRON FLUENCE; DISPLACEMENT RATE;
FAST-REACTORS; PURE IRON; ALLOYS; CREEP; EVOLUTION
AB The majority of data on the irradiation response of ferritic/martensitic steels has been derived from simple free-standing specimens irradiated in experimental assemblies under well-defined and near-constant conditions, while components of long-lived fuel assemblies are more complex in shape and will experience progressive changes in environmental conditions. To explore whether the resistance of HT9 to void swelling is maintained under more realistic operating conditions, the radiation-induced microstructure of an HT9 ferritic/martensitic hexagonal duct was examined following a six-year irradiation of a fuel assembly in the Fast Flux Test Reactor Facility (FFTF). The calculated irradiation exposure and average operating temperature of the duct at the location examined were similar to 155 dpa at similar to 443 degrees C. It was found that dislocation networks were predominantly composed of (a/2)<1 1 1> Burgers vectors. Surprisingly, for such a large irradiation dose, type a<1 0 0> interstitial loops were observed. Additionally, a high density of precipitation occurred. These two microstructural characteristics may have contributed to the rather low swelling level of 0.3%. Published by Elsevier B.V.
C1 [Sencer, B. H.; Kennedy, J. R.; Cole, J. I.] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
[Malloy, S. A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Garner, F. A.] Radiat Effects Consulting, Richland, WA 99352 USA.
RP Sencer, BH (reprint author), Idaho Natl Lab, Idaho Falls, ID 83415 USA.
EM Bulent.Sencer@inl.gov
RI Maloy, Stuart/A-8672-2009
OI Maloy, Stuart/0000-0001-8037-1319
FU Advanced Fuel Cycle Initiative (AFCI)
FX This research is supported by the Advanced Fuel Cycle Initiative (AFCI).
The authors are indebted to M.B. Toloczko of Pacific Northwest National
Laboratory for the information describing the irradiation conditions of
the AC0-3 duct, as presented in Fig. 2 and Tables 2 and 3 and to W.
Witherspoon who led the retrieval of this duct. A special acknowledgment
is given to F. Goldner at DOE for making all this happen. We also thank
T. Romero for remotely cutting the TEM specimens from the duct and J.
Gan for sample preparation. We also acknowledge the staff of UNLV for
the use of their electron beam facility.
NR 43
TC 32
Z9 33
U1 2
U2 25
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
EI 1873-4820
J9 J NUCL MATER
JI J. Nucl. Mater.
PD SEP 1
PY 2009
VL 393
IS 2
BP 235
EP 241
DI 10.1016/j.jnucmat.2009.06.010
PG 7
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA 499UJ
UT WOS:000270251400005
ER
PT J
AU Clarke, AJ
Field, RD
Hackenberg, RE
Thoma, DJ
Brown, DW
Teter, DF
Miller, MK
Russell, KF
Edmonds, DV
Beverini, G
AF Clarke, A. J.
Field, R. D.
Hackenberg, R. E.
Thoma, D. J.
Brown, D. W.
Teter, D. F.
Miller, M. K.
Russell, K. F.
Edmonds, D. V.
Beverini, G.
TI Low temperature age hardening in U-13 at.% Nb: An assessment of chemical
redistribution mechanisms
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
ID PERCENT NIOBIUM ALLOY; FE-CR ALLOYS; SHAPE-MEMORY ALLOYS; SPINODAL
DECOMPOSITION; URANIUM-NIOBIUM; COMPUTER-MODELS; ATOMIC-LEVEL; U-NB;
PHASE-TRANSFORMATIONS; METASTABLE PHASES
AB Low temperature aging (<350 degrees C) of U-13 at.% Nb martensite results in increased strength levels accompanied by significant ductility loss. To determine the decomposition mechanism(s) responsible for these mechanical property changes, atom probe tomography was used to examine the niobium and impurity distributions after aging at 200 or 300 degrees C for times ranging from 2 h to 70 days. No patterns of niobium or impurity atoms were observed that would indicate segregation to the martensitic twin interfaces, making this hardening mechanism unlikely. Phase separation into roughly equiaxed regions of high and low niobium concentration was clearly observed after aging at 300 degrees C for 70 days. However, only subtle niobium concentration changes were observed after aging at 200 degrees C relative to the as-quenched condition, indicating that conventional phase separation is an unlikely explanation for the dramatic mechanical property changes at 200 degrees C. Therefore, consideration of aging mechanisms other than segregation and phase separation may be warranted. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Clarke, A. J.; Field, R. D.; Hackenberg, R. E.; Thoma, D. J.; Brown, D. W.; Teter, D. F.] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
[Miller, M. K.; Russell, K. F.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Edmonds, D. V.; Beverini, G.] Univ Leeds, Sch Proc Environm & Mat Engn, Leeds LS2 9JT, W Yorkshire, England.
RP Hackenberg, RE (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, Mail Stop G770, Los Alamos, NM 87545 USA.
EM roberth@lanl.gov
OI Hackenberg, Robert/0000-0002-0380-5723
FU US Department of Energy [DE-AC52-06NA25396]; Office of Science, Office
of Basic Energy Sciences, Scientific User Facilities Division, US
Department of Energy
FX LANL support was provided by the US Department of Energy (Contract
Number DE-AC52-06NA25396) and the G.T. Seaborg Institute for
Transactinium Science. Research at the Oak Ridge National Laboratory
SHaRE User Facility was sponsored by the Office of Science, Office of
Basic Energy Sciences, Scientific User Facilities Division, US
Department of Energy with UT-Battelle, LLC. We thank J.A. Balog for
machining the atom probe specimen blanks, T. Tucker and W.L. Hults for
performing the heat treatments, and M.F. Lopez for performing the
tensile testing. A.M. Kelly, R.S. Casey, and R.T. Forsyth are gratefully
acknowledged for the metallography and hardness testing. Helpful
discussions regarding this work with K.H. Eckelmeyer and J.P. Hirth are
also greatly appreciated.
NR 48
TC 8
Z9 8
U1 3
U2 32
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
EI 1873-4820
J9 J NUCL MATER
JI J. Nucl. Mater.
PD SEP 1
PY 2009
VL 393
IS 2
BP 282
EP 291
DI 10.1016/j.jnucmat.2009.06.025
PG 10
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA 499UJ
UT WOS:000270251400010
ER
PT J
AU Kotomin, EA
Mastrikov, YA
Rashkeev, SN
Van Uffelen, P
AF Kotomin, E. A.
Mastrikov, Yu. A.
Rashkeev, S. N.
Van Uffelen, P.
TI Implementing first principles calculations of defect migration in a fuel
performance code for UN simulations
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
ID ADVANCED NUCLEAR-FUELS; OXYGEN IMPURITIES; POINT-DEFECTS;
1ST-PRINCIPLES; MONONITRIDE; DIFFUSION; SPECTRA; ENERGY; CREEP
AB Results are reported of first principles VASP supercell calculations of basic defect migration in UN nuclear fuels. The collinear interstitialcy mechanism of N migration is predicted to be energetically more favourable than direct [0 0 1] hops. It is also found that U and N vacancies have close migration energies, and 0 impurities accelerate migration of N vacancies nearby. These values are both in qualitative agreement with the effect of oxygen on the reduction of the activation energy for thermal creep reported in the literature, as well as in quantitative agreement with the experimental data when taking into account the uncertainties. The migration energies have been implemented in the thermal creep model of the TRANS-URANUS fuel performance code. Therefore a concrete example is provided of how first principles computations can contribute directly to improve the design tools of advanced nuclear fuels, e.g. the predictions reveal a limited effect of oxygen on the thermo-mechanical performance of nitride fuels under fast breeder reactor (FBR) normal operating conditions. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Van Uffelen, P.] Commiss European Communities, Joint Res Ctr, Inst Transuranium Elements, D-76344 Eggenstein Leopoldshafen, Germany.
[Kotomin, E. A.; Mastrikov, Yu. A.] Latvian State Univ, Inst Solid State Phys, LV-1063 Riga, Latvia.
[Rashkeev, S. N.] Ctr Adv Modeling & Simulat, Idaho Natl Lab, Idaho Falls, ID 83415 USA.
RP Van Uffelen, P (reprint author), Commiss European Communities, Joint Res Ctr, Inst Transuranium Elements, Hermann von Helmholtz Pl 1, D-76344 Eggenstein Leopoldshafen, Germany.
EM Paul.Van-Uffelen@ec.europa.eu
RI Dep Theor Physics, Computer Modeling/E-6336-2013; Kotomin,
Eugene/B-8070-2013; mastrikov, yuri/K-9056-2013
OI Kotomin, Eugene/0000-0002-8122-6276;
FU Latvian National Programme on Energetics; European Union [211690]; Idaho
National Laboratory (INC) Directed Research and Development program; US
Department of Energy, Office of Nuclear Energy [DE-AC07-051D14517,
DE-AC02-05CH11231]; EMS Laboratory of the PNNL [25592]; High Performance
Computer Center at INL
FX This study was partly supported by the Latvian National Programme on
Energetics, the European Union FP7 F-BRIDGE project (Contract No.
211690), the Idaho National Laboratory (INC) Directed Research and
Development program, and the US Department of Energy, Office of Nuclear
Energy under DOE Idaho Operations Office, Contract No.
DE-AC07-051D14517. This research used resources of the National Energy
Research Scientific Computing Center (NERSC), which is supported by the
Office of Science of the US Department of Energy under Contract No.
DE-AC02-05CH11231 and the EMS Laboratory of the PNNL (Project No.
25592). It was also supported in part by a grant of computer time from
High Performance Computer Center at INL. Authors are also greatly
indebted Hj. Matzke, R.A. Evarestov, V.V. Rondinella, E. Heifets, D.
Gryaznov, and R. Caciuffo for many stimulating discussions.
NR 31
TC 12
Z9 12
U1 1
U2 8
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
J9 J NUCL MATER
JI J. Nucl. Mater.
PD SEP 1
PY 2009
VL 393
IS 2
BP 292
EP 299
DI 10.1016/j.jnucmat.2009.06.016
PG 8
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA 499UJ
UT WOS:000270251400011
ER
PT J
AU Keiser, DD
Robinson, AB
Jue, JF
Medvedev, P
Wachs, DM
Finlay, MR
AF Keiser, Dennis D., Jr.
Robinson, Adam B.
Jue, Jan-Fong
Medvedev, Pavel
Wachs, Daniel M.
Finlay, M. Ross
TI Microstructural development in irradiated U-7Mo/6061 Al alloy matrix
dispersion fuel
SO JOURNAL OF NUCLEAR MATERIALS
LA English
DT Article
ID WT-PERCENT-MO; LOW-TEMPERATURE; BEHAVIOR; INTERDIFFUSION; DIFFUSION
AB A U-7Mo alloy/6061 Al alloy matrix mini-dispersion fuel plate was irradiated in the Advanced Test Reactor and then examined using optical metallography and scanning electron microscopy to characterize the developed microstructure. Results were compared to the microstructure of the as-fabricated dispersion fuel to identify changes that occurred during irradiation. The layer that formed on the surface of the fuel U-7Mo particles during fuel plate fabrication exhibits stable irradiation performance as a result of the similar to 0.88 wt% Si present in the fuel meat matrix. During irradiation, the pre-formed interaction layer changed very little in thickness and composition. The overall irradiation performance of the fuel plate to moderate power and burnup was considered excellent. (C) 2009 Published by Elsevier B.V.
C1 [Keiser, Dennis D., Jr.; Robinson, Adam B.; Jue, Jan-Fong; Medvedev, Pavel; Wachs, Daniel M.] Nucl Fuels & Mat Div, Idaho Natl Lab, Idaho Falls, ID 83415 USA.
[Finlay, M. Ross] Australian Nucl Sci & Technol Org, Menai, NSW 2334, Australia.
RP Keiser, DD (reprint author), Nucl Fuels & Mat Div, Idaho Natl Lab, POB 1625, Idaho Falls, ID 83415 USA.
EM Dennis.Keiser@inl.gov
FU US Department of Energy, Office of Nuclear Materials Threat Reduction
[NA-212, DE-AC07-05ID14517]; National Nuclear Security Administration
FX This work was supported by the US Department of Energy, Office of
Nuclear Materials Threat Reduction (NA-212), National Nuclear Security
Administration, under DOE-NE Idaho Operations Office Contract
DE-AC07-05ID14517. The HFEF staff, located at INL, is thankfully
acknowledged for its contributions in performing PIE and generating
punchings used for conducting the SEM analysis. Tom Weincek is
acknowledged for his efforts in fabricating the dispersion fuels for the
RERTR-6 experiment at Argonne National Laboratory. INL staff is also
acknowledged for the fabrication of the RERTR-7 experiment.
Acknowledgment is given to the ATIZ staff for their assistance in
performing the irradiation experiments.
NR 35
TC 47
Z9 47
U1 2
U2 4
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3115
J9 J NUCL MATER
JI J. Nucl. Mater.
PD SEP 1
PY 2009
VL 393
IS 2
BP 311
EP 320
DI 10.1016/j.jnucmat.2009.06.018
PG 10
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA 499UJ
UT WOS:000270251400014
ER
PT J
AU Williams, S
Carter, J
Oliker, J
Shalf, J
Yelick, K
AF Williams, Samuel
Carter, Jonathan
Oliker, Jeonid
Shalf, John
Yelick, Katherine
TI Optimization of a lattice Boltzmann computation on state-of-the-art
multicore platforms
SO JOURNAL OF PARALLEL AND DISTRIBUTED COMPUTING
LA English
DT Article; Proceedings Paper
CT 22nd IEEE International Parallel and Distributed Processing Symposium
(IPDPS 2008)
CY APR 14-18, 2008
CL Miami, FL
SP IEEE
DE Lattice Boltzmann; Auto-tuning; Multicore; Cell broadband engine;
Niagara
AB We present an auto-tuning approach to optimize application performance on emerging multicore architectures. The methodology extends the idea of search-based performance optimizations, popular in linear algebra and FFT libraries, to application-specific computational kernels. Our work applies this strategy to a lattice Boltzmann application (LBMHD) that historically has made poor use of scalar microprocessors due to its complex data structures and memory access patterns. We explore one of the broadest sets of multicore architectures in the high-performance computing (HPC) literature, including the Intel Xeon E5345 (Clovertown), AMD Opteron 2214 (Santa Rosa), AMD Opteron 2356 (Barcelona), Sun T5140 T2+ (Victoria Falls), as well as a QS20 IBM Cell Blade. Rather than hand-tuning LBMHD for each system, we develop a code generator that allows us to identify a highly optimized version for each platform, while amortizing the human programming effort. Results show that our auto-tuned LBMHD application achieves up to a 15 times improvement compared with the original code at a given concurrency. Additionally, we present a detailed analysis of each optimization, which reveals surprising hardware bottlenecks and software challenges for future multicore systems and applications. (c) 2009 Elsevier Inc. All rights reserved.
C1 [Williams, Samuel; Carter, Jonathan; Oliker, Jeonid; Shalf, John; Yelick, Katherine] Lawrence Berkeley Natl Lab Berkeley, CRD NERSC, Berkeley, CA 94720 USA.
[Williams, Samuel; Yelick, Katherine] Univ Calif Berkeley, CS Div, Berkeley, CA 94720 USA.
RP Williams, S (reprint author), 1 Cyclotron Rd,MS-50A-1148, Berkeley, CA 94720 USA.
EM SWWilliams@lbl.gov; JTCarter@lbl.gov; LOliker@lbl.gov; JShalf@lbl.gov;
KAYelick@lbl.gov
NR 27
TC 15
Z9 15
U1 1
U2 6
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0743-7315
J9 J PARALLEL DISTR COM
JI J. Parallel Distrib. Comput.
PD SEP
PY 2009
VL 69
IS 9
BP 762
EP 777
DI 10.1016/j.jpdc.2009.04.002
PG 16
WC Computer Science, Theory & Methods
SC Computer Science
GA 480MU
UT WOS:000268739800003
ER
PT J
AU Ruan, L
Lin, G
Xu, Z
Asselta, K
Chen, HF
Christie, W
Crawford, HJ
Engelage, J
Eppley, G
Hallman, TJ
Li, C
Liu, J
Llope, WJ
Majka, R
Nussbaum, T
Scheblein, J
Shao, M
Soja, R
Sun, Y
Tang, Z
Wang, X
Wang, Y
AF Ruan, L.
Lin, G.
Xu, Z.
Asselta, K.
Chen, H. F.
Christie, W.
Crawford, H. J.
Engelage, J.
Eppley, G.
Hallman, T. J.
Li, C.
Liu, J.
Llope, W. J.
Majka, R.
Nussbaum, T.
Scheblein, J.
Shao, M.
Soja, R.
Sun, Y.
Tang, Z.
Wang, X.
Wang, Y.
TI Perspectives of a mid-rapidity dimuon program at the RHIC: a novel and
compact muon telescope detector
SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
LA English
DT Article
ID RESISTIVE PLATE CHAMBERS; QUARK-GLUON PLASMA; HEAVY-ION COLLISIONS;
PARTICLE IDENTIFICATION; STAR EXPERIMENT; COLLABORATION; TRAY
AB We propose a large-area, cost-effective muon telescope detector (MTD) at mid-rapidity for the solenoidal tracker at the RHIC ( STAR) and for the next generation of detectors at a possible electron-ion collider. We utilize large multi-gap resistive plate chambers with long readout strips (long-MRPC) in the detector design. The results from cosmic ray and beam tests show that the intrinsic timing and spatial resolution for a long-MRPC are 60-70 ps and similar to 1 cm, respectively. The performance of the prototype muon telescope detector at STAR indicates that muon identification at a transverse momentum of a few GeV/c can be achieved by combining information from track matching with the MTD, ionization energy loss in the time projection chamber and time-of-flight measurements. A primary muon over secondary muon ratio of better than 1/3 can be achieved. This provides a promising device for future quarkonium programs and primordial dilepton measurements at the RHIC. Simulations of the muon efficiency, the signal-to-background ratio of J/psi, the separation of gamma 1S from 2S+3S states and the electron-muon correlation from charm pair production in the RHIC environment are presented.
C1 [Ruan, L.; Xu, Z.; Asselta, K.; Christie, W.; Hallman, T. J.; Scheblein, J.; Soja, R.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Lin, G.; Majka, R.] Yale Univ, New Haven, CT 06520 USA.
[Chen, H. F.; Li, C.; Shao, M.; Sun, Y.; Tang, Z.] Univ Sci & Technol China, Hefei 230026, Peoples R China.
[Crawford, H. J.; Engelage, J.] Univ Calif Berkeley, Berkeley, CA 94720 USA.
[Eppley, G.; Liu, J.; Llope, W. J.; Nussbaum, T.] Rice Univ, Houston, TX 77251 USA.
[Wang, X.; Wang, Y.] Tsinghua Univ, Beijing 100084, Peoples R China.
RP Ruan, L (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
EM ruan@bnl.gov
RI Tang, Zebo/A-9939-2014
OI Tang, Zebo/0000-0002-4247-0081
FU BNL [07-007]; National Natural Science Foundation of China [10775131];
Battelle Memorial Institute; Stony Brook University; Gertrude and
Maurice Goldhaber; PECASE
FX We thank the STAR Collaboration and the RCF at BNL for their support.
This project is supported by the BNL Laboratory directed R& D fund
07-007. Long-MRPC R& D at USTC is supported by the National Natural
Science Foundation of China (10775131). LR thanks the Battelle Memorial
Institute and Stony Brook University for the support in the form of the
Gertrude and Maurice Goldhaber Distinguished Fellowship. Z Xu is
supported in part by the PECASE Award.
NR 32
TC 37
Z9 37
U1 0
U2 8
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0954-3899
EI 1361-6471
J9 J PHYS G NUCL PARTIC
JI J. Phys. G-Nucl. Part. Phys.
PD SEP
PY 2009
VL 36
IS 9
AR 095001
DI 10.1088/0954-3899/36/9/095001
PG 15
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 499RD
UT WOS:000270241400002
ER
PT J
AU Hykes, JM
Densmore, JD
AF Hykes, Joshua M.
Densmore, Jeffery D.
TI Non-analog Monte Carlo estimators for radiation momentum deposition
SO JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
LA English
DT Article
DE Radiation hydrodynamics; Radiative transfer; Monte Carlo; Momentum
deposition
ID MEAN FREE PATHS; TRANSPORT-THEORY
AB The standard method for calculating radiation momentum deposition in Monte Carlo simulations is the analog estimator, which tallies the change in a particle's momentum at each interaction with the matter. Unfortunately, the analog estimator can suffer from large amounts of statistical error. In this paper, we present three new non-analog techniques for estimating momentum deposition. Specifically, we use absorption, collision, and track-length estimators to evaluate a simple integral expression for momentum deposition that does not contain terms that can cause large amounts of statistical error in the analog scheme. We compare our new non-analog estimators to the analog estimator with a set of test problems that encompass. a wide range of material properties and both isotropic and anisotropic scattering. In nearly all cases, the new non-analog estimators outperform the analog estimator. The track-length estimator consistently yields the highest performance gains, improving upon the analog-estimator figure of merit by factors of up to two orders of magnitude. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Hykes, Joshua M.; Densmore, Jeffery D.] Los Alamos Natl Lab, Computat Phys & Methods Grp, Los Alamos, NM 87545 USA.
RP Densmore, JD (reprint author), Los Alamos Natl Lab, Computat Phys & Methods Grp, POB 1663,MS D409, Los Alamos, NM 87545 USA.
EM jmhykes@ncsu.edu; jdd@lanl.gov
FU Los Alamos National Laboratory [DE-AC52-06NA25396]; U.S. Department of
Energy
FX This work was performed under U.S. government contract DE-AC52-06NA25396
for Los Alamos National Laboratory, which is operated by Los Alamos
National Security, LLC, for the U.S. Department of Energy.
NR 10
TC 3
Z9 3
U1 0
U2 1
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0022-4073
J9 J QUANT SPECTROSC RA
JI J. Quant. Spectrosc. Radiat. Transf.
PD SEP
PY 2009
VL 110
IS 13
BP 1097
EP 1110
DI 10.1016/j.jqsrt.2009.03.030
PG 14
WC Optics; Spectroscopy
SC Optics; Spectroscopy
GA 467ER
UT WOS:000267721200005
ER
PT J
AU Kassianov, E
Ovchinnikov, M
Berg, LK
McFarlane, SA
Flynn, C
AF Kassianov, Evgueni
Ovchinnikov, Mikhail
Berg, Larry K.
McFarlane, Sally A.
Flynn, Connor
TI Retrieval of aerosol optical depth in vicinity of broken clouds from
reflectance ratios: Sensitivity study
SO JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
LA English
DT Article; Proceedings Paper
CT 11th Conference on Electromagnetic and Light Scattering
CY SEP 07-12, 2008
CL Univ Hertfordshire, Hatfield, ENGLAND
HO Univ Hertfordshire
DE Continental cumulus clouds; Aerosol optical depth; Multi-spectral
reflectance
ID ATMOSPHERIC RADIATION MEASUREMENT; MODIS; ABSORPTION; ALBEDO; MISR
AB We conducted a sensitivity study to better understand the potential of a new method for retrieving aerosol optical depth (AOD) under partly cloudy conditions. This method exploits ratios of reflectances in the visible spectral range and provides an effective way to avoid three-dimensional (3D) cloud effects. The sensitivity study is performed for different observational conditions and random errors in input data. The results of the sensitivity study suggest that this ratio method has the ability to detect clear pixels even in close proximity to clouds. Such detection does not require a statistical analysis of the two-dimensional (2D) horizontal distribution of reflected solar radiation, which makes it suitable for operational retrievals. in comparison with previously suggested approaches, the ratio method has the capability to increase the "harvest" of clear pixels. Similar to the traditional independent pixel approximation (IPA), the ratio method has a low computational cost for retrieving AOD. In contrast to the IPA method, the ratio method provides much more accurate estimations of the AOD values under broken cloud conditions: pixel-based and domain-averaged estimations of errors in AOD are about 25% and 10%, respectively. Finally, both the ratio-based cloud screening and the accuracy of domain-averaged ratio-based AOD values do not suffer greatly when 5% random errors are introduced in the reflectances. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Kassianov, Evgueni; Ovchinnikov, Mikhail; Berg, Larry K.; McFarlane, Sally A.; Flynn, Connor] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Kassianov, E (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
EM Evgueni.Kassianov@pnl.gov
RI McFarlane, Sally/C-3944-2008; Berg, Larry/A-7468-2016
OI Berg, Larry/0000-0002-3362-9492
NR 31
TC 13
Z9 13
U1 0
U2 4
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0022-4073
EI 1879-1352
J9 J QUANT SPECTROSC RA
JI J. Quant. Spectrosc. Radiat. Transf.
PD SEP-NOV
PY 2009
VL 110
IS 14-16
SI SI
BP 1677
EP 1689
DI 10.1016/j.jqsrt.2009.01.014
PG 13
WC Optics; Spectroscopy
SC Optics; Spectroscopy
GA 476TO
UT WOS:000268468700040
ER
PT J
AU Dewberry, RA
Casella, VR
Sigg, RA
Bhatt, NN
AF Dewberry, R. A.
Casella, V. R.
Sigg, R. A.
Bhatt, N. N.
TI Benchmarking Ortec ISOTOPIC measurements and calculations
SO JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
LA English
DT Article
DE gamma-ray analysis; ISOCS analysis
AB This paper represents a description of eight compiled benchmark tests conducted to probe and to demonstrate the extensive utility of the Ortec ISOTOPIC gamma-ray analysis software program. The paper describes tests of the programs capability to perform finite geometry correction factors and sample-matrix-container photon absorption correction factors. Favorable results are obtained in all benchmark tests.
C1 [Dewberry, R. A.; Casella, V. R.; Sigg, R. A.] Savannah River Natl Lab, Aiken, SC USA.
[Bhatt, N. N.] Savannah River Site Analyt Labs, Aiken, SC USA.
RP Dewberry, RA (reprint author), Savannah River Natl Lab, Aiken, SC USA.
EM raymond.dewberry@srnl.doe.gov
NR 21
TC 1
Z9 1
U1 0
U2 0
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0236-5731
J9 J RADIOANAL NUCL CH
JI J. Radioanal. Nucl. Chem.
PD SEP
PY 2009
VL 281
IS 3
BP 313
EP 321
DI 10.1007/s10967-009-0019-5
PG 9
WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Nuclear Science &
Technology
SC Chemistry; Nuclear Science & Technology
GA 504RQ
UT WOS:000270635400001
ER
PT J
AU Gupta, S
Saxena, A
AF Gupta, Sanju
Saxena, Avadh
TI Nanocarbon materials: probing the curvature and topology effects using
phonon spectra
SO JOURNAL OF RAMAN SPECTROSCOPY
LA English
DT Article
DE nanoscale carbons; resonance Raman spectroscopy; geometry; global
topology; curvature
ID BORON-NITRIDE NANOTUBES; CARBON NANOTUBES; RAMAN-SCATTERING;
ELECTRONIC-STRUCTURE; VIBRATIONAL-MODES; GRAPHITIC CARBON; LOCAL
TOPOLOGY; SPECTROSCOPY; GRAPHENE; STATES
AB Much has been learned from the use of resonance Raman spectroscopy and high-resolution transmission electron microscopy techniques about the micro-/nanoscopic structure of various nanostructured carbons. However, they still possess some features that are not entirely understood particularly in terms of topological characteristics, which go beyond making a distinction with just the geometrical structure at nanoscale. To effectively utilize the potential of these materials for technological needs, understanding both the geometrical and topological structure and perhaps relating these attributes to physical (optical/electronic, lattice vibrational) properties become indispensable. Here, we make an attempt to describe the differences between various nanostructures and provide geometrical and topological property assessment semiquantitatively by monitoring the phonon spectra using resonance Raman spectroscopy thereby also capturing the electronic spectra. We elucidate the notion of global topology and curvature for a range of technologically important nanoscale carbons including tubular (single-, double- and multiwalled nanotubes, peapod), spherical (hypo- and hyperfullerenes, onion-like carbon) and complex (nanocones, nanohorns, nanodisks and nanorings) geometries. To demonstrate the proof-of-concept, we determined the variation in the prominent Raman bands of the respective materials, represented as D, G and D* (the overtone of D) bands, as a possible topological or curvature trend due to their sensitivity toward structural modification. The latter arises from local topological defects such as pentagons giving rise to curved nanocarbons. In this study, we provide systematics of their variation with respect to their geometric forms and compare with highly oriented pyrolytic graphite and monolayer graphene since the nanocarbons discussed are their derivatives. Once established, this knowledge will provide a powerful machinery to understand newer nanocarbons and indeed point to an unprecedented emergent paradigm of global topology/curvature -> property -> functionality relationship. We emphasize that these concepts are applicable to other topologically distinct nanomaterials, which include boron-nitride (BN) nanotubes and nanotori, helical gold nanotubes and Mobius conjugated organics. Copyright (C) 2009 John Wiley & Sons, Ltd.
C1 [Gupta, Sanju] Politecn Torino, Dept Phys, I-10129 Turin, Italy.
[Gupta, Sanju] Univ Missouri, Dept Elect & Comp Engn, Columbia, MO 65211 USA.
[Saxena, Avadh] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Saxena, Avadh] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
RP Gupta, S (reprint author), Politecn Torino, Dept Phys, I-10129 Turin, Italy.
EM sgup@rocketmail.com
FU US Department of Energy
FX This work was supported by the US Department of Energy (A.S.). The
authors are also indebted to Prof. H. Kuzmany (U. Wien, Austria) for
providing the visible Raman spectra of peapods and double-walled
nanotubes and Prof. Y. Gogotsi (Drexel University PA) for the visible
Raman spectra of micrographite and graphite nanocones/whiskers. The
authors are also thankful to Dr S. Hayashi (Kobe University, Japan) for
the onion-like carbon samples prepared in Moscow, Russia and for the
useful comments from the reviewers whose suggestions were invaluable.
NR 90
TC 27
Z9 27
U1 3
U2 28
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0377-0486
EI 1097-4555
J9 J RAMAN SPECTROSC
JI J. Raman Spectrosc.
PD SEP
PY 2009
VL 40
IS 9
BP 1127
EP 1137
DI 10.1002/jrs.2245
PG 11
WC Spectroscopy
SC Spectroscopy
GA 505KQ
UT WOS:000270692700007
ER
PT J
AU Park, S
AF Park, Sangmoon
TI Preparation of iron oxides using ammonium iron citrate precursor: Thin
films and nanoparticles
SO JOURNAL OF SOLID STATE CHEMISTRY
LA English
DT Article
DE Iron oxides; Thin films; Nanoparticles; Transmission electron
microscopy; Magnetic measurements
ID HYDROTHERMAL SYNTHESIS; BIOMEDICAL APPLICATIONS; FE3O4; DEPOSITION;
ALPHA-FE2O3; GROWTH; CRYSTALLIZATION; NANOCRYSTALS; GAMMA-FE2O3;
PARTICLES
AB Ammonium iron citrate (C(6)H(8)O(7) center dot Fe center dot nH(3)N) was used as a precursor for preparing both iron-oxide thin films and nanoparticles. Thin films of iron oxides were fabricated on silicon (111) substrate using a successive-ionic-layer-adsorption-and-reaction (SILAR) method and subsequent hydrothermal or furnace annealing. Atomic force microscopy (AFM) images of their on-oxide films obtained under various annealing conditions show the changes of the micro-scale surface structures and the magnetic properties. Homogenous Fe(3)O(4) nanoparticles around 4 nm in diameter were synthesized by hydrothermal reduction method at low temperature and investigated using transmission electron microscopy (TEM). (C) 2009 Elsevier Inc. All rights reserved.
C1 [Park, Sangmoon] Silla Univ, Dept Engn Energy & Appl Chem, Pusan 617736, South Korea.
[Park, Sangmoon] Univ S Carolina, Dept Chem & Biochem, USC Nanoctr, Columbia, SC 29208 USA.
[Park, Sangmoon] Brookhaven Natl Lab, Condense Matter Phys & Mat Sci Dept, Upton, NY 11973 USA.
RP Park, S (reprint author), Silla Univ, Dept Engn Energy & Appl Chem, Pusan 617736, South Korea.
EM spark@silla.ac.kr
NR 39
TC 9
Z9 9
U1 3
U2 20
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0022-4596
J9 J SOLID STATE CHEM
JI J. Solid State Chem.
PD SEP
PY 2009
VL 182
IS 9
BP 2456
EP 2460
DI 10.1016/j.jssc.2009.06.027
PG 5
WC Chemistry, Inorganic & Nuclear; Chemistry, Physical
SC Chemistry
GA 557AD
UT WOS:000274638600018
ER
PT J
AU Essler, FHL
Konik, RM
AF Essler, Fabian H. L.
Konik, Robert M.
TI Finite-temperature dynamical correlations in massive integrable quantum
field theories
SO JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT
LA English
DT Review
DE correlation functions; form factors; integrable quantum field theory;
spin chains; ladders and planes (theory)
ID SPIN CORRELATION-FUNCTIONS; NONLINEAR SIGMA-MODEL; EXACT FORM-FACTORS;
2-DIMENSIONAL ISING-MODEL; DIMENSIONAL XY-MODEL; SINE-GORDON MODEL;
MAGNETIC-FIELD; HEISENBERG MAGNETS; NEUTRON-SCATTERING; ANTI-FERROMAGNET
AB We consider the finite-temperature frequency and momentum-dependent two-point functions of local operators in integrable quantum field theories. We focus on the case where the zero-temperature correlation function is dominated by a delta-function line arising from the coherent propagation of single-particle modes. Our specific examples are the two-point function of spin fields in the disordered phase of the quantum Ising and the O(3) nonlinear sigma models. We employ a Lehmann representation in terms of the known exact zero-temperature form factors to carry out a low-temperature expansion of two-point functions. We present two different but equivalent methods of regularizing the divergences present in the Lehmann expansion: one directly regulates the integral expressions of the squares of matrix elements in the infinite volume whereas the other operates through subtracting divergences in a large, finite volume. Our central results are that the temperature broadening of the lineshape exhibits a pronounced asymmetry and a shift of the maximum upwards in energy ('temperature-dependent gap'). The field theory results presented here describe the scaling limits of the dynamical structure factor in the quantum Ising and integer spin Heisenberg chains. We discuss the relevance of our results for the analysis of inelastic neutron scattering experiments on gapped spin chain systems such as CsNiCl3 and YBaNiO5.
C1 [Essler, Fabian H. L.] Univ Oxford, Rudolf Peierls Ctr Theoret Phys, Oxford OX1 3NP, England.
[Konik, Robert M.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
RP Essler, FHL (reprint author), Univ Oxford, Rudolf Peierls Ctr Theoret Phys, S Parks Rd, Oxford OX1 3NP, England.
EM fab@thphys.ox.ac.uk; rmk@bnl.gov
RI Konik, Robert/L-8076-2016
OI Konik, Robert/0000-0003-1209-6890
NR 113
TC 28
Z9 28
U1 0
U2 3
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1742-5468
J9 J STAT MECH-THEORY E
JI J. Stat. Mech.-Theory Exp.
PD SEP
PY 2009
AR P09018
DI 10.1088/1742-5468/2009/09/P09018
PG 55
WC Mechanics; Physics, Mathematical
SC Mechanics; Physics
GA 501BN
UT WOS:000270354000024
ER
PT J
AU Owen, RL
Holton, JM
Schulze-Briese, C
Garman, EF
AF Owen, Robin L.
Holton, James M.
Schulze-Briese, Clemens
Garman, Elspeth F.
TI Comments on Determination of X-ray flux using silicon pin diodes by R.
L. Owen et al. (2009). J. Synchrotron Rad. 16, 143-151 Response
SO JOURNAL OF SYNCHROTRON RADIATION
LA English
DT Letter
ID PHOTODIODES
C1 [Garman, Elspeth F.] Univ Oxford, Dept Biochem, Lab Mol Biophys, Oxford OX1 3QU, England.
[Owen, Robin L.; Schulze-Briese, Clemens] Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland.
[Holton, James M.] Univ Calif San Francisco, Dept Biochem & Biophys, San Francisco, CA 94158 USA.
[Holton, James M.] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
RP Garman, EF (reprint author), Univ Oxford, Dept Biochem, Lab Mol Biophys, S Parks Rd, Oxford OX1 3QU, England.
EM elspeth.garman@bioch.ox.ac.uk
NR 5
TC 0
Z9 0
U1 2
U2 6
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0909-0495
J9 J SYNCHROTRON RADIAT
JI J. Synchrot. Radiat.
PD SEP
PY 2009
VL 16
BP 691
EP 692
DI 10.1107/S0909049509023644
PG 2
WC Instruments & Instrumentation; Optics; Physics, Applied
SC Instruments & Instrumentation; Optics; Physics
GA 488TD
UT WOS:000269372100015
ER
PT J
AU Van Den Abeele, K
Le Bas, PY
Van Damme, B
Katkowski, T
AF Van Den Abeele, K.
Le Bas, P. Y.
Van Damme, B.
Katkowski, Tomasz
TI Quantification of material nonlinearity in relation to microdamage
density using nonlinear reverberation spectroscopy: Experimental and
theoretical study
SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
LA English
DT Article
ID ACOUSTIC HARMONIC-GENERATION; ELASTIC-WAVE SPECTROSCOPY; DISCERN
MATERIAL DAMAGE; SLOW DYNAMICS; NEWS TECHNIQUES; RESONANT BAR; ROCK;
PROPAGATION; CONCRETE; SOLIDS
AB High amplitude vibrations induce amplitude dependence of the characteristic resonance parameters (i.e., resonance frequency and damping factor) in materials with microscopic damage features as a result of the nonlinear constitutive relation at the damage location. This paper displays and quantifies results of the nonlinear resonance technique, both in time (signal reverberation) and in frequency (sweep) domains, as a function of sample crack density. The reverberation spectroscopy technique is applied to carbon fiber reinforced plastic (CFRP) composites exposed to increasing thermal loading. Considerable gain in sensitivity and consistent interpretation of the results for nonlinear signatures in comparison with the linear characteristics are obtained. The amount of induced damage is quantified by analyzing light optical microscopy images of several cross-sections of the CFRP samples using histogram equalization and grayscale thresholding. The obtained measure of crack density is compared to the global macroscopic nonlinearity of the sample and explicitly confirms that the increase in nonlinearity is linked to an increased network of cracks. A change from 1% to 3% in crack density corresponds to a tenfold increase in the signature of nonlinearity. Numerical simulations based on a uniform distribution of a hysteretic nonlinear constitutive relation within the sample support the results. (C) 2009 Acoustical Society of America. [DOI: 10.1121/1.3194583]
C1 [Van Den Abeele, K.; Le Bas, P. Y.; Van Damme, B.; Katkowski, Tomasz] Katholieke Univ Leuven, Interdisciplinary Res Ctr, B-8500 Kortrijk, Belgium.
[Le Bas, P. Y.] Los Alamos Natl Lab, Los Alamos, NM 87544 USA.
[Katkowski, Tomasz] Univ Gdansk, Inst Expt Phys, PL-80952 Gdansk, Poland.
RP Van Den Abeele, K (reprint author), Katholieke Univ Leuven, Interdisciplinary Res Ctr, Campus Kortrijk,Etienne Sabbelaan 53, B-8500 Kortrijk, Belgium.
EM koen.vandenabeele@kuleuven-kortrijk.be
FU AERONEWS [AST-CT-2003-502927]; Scientific Research [G.0206.02,
G.0554.06, G.0443.07]; Research Council of the Katholieke Universiteit
Leuven [OT/07/051]; CIFI
FX The authors gratefully acknowledge the support of the European FP6 Grant
AERONEWS (Grant No. AST-CT-2003-502927), the Flemish Fund for Scientific
Research (Grant Nos. G.0206.02, G.0554.06, and G.0443.07), the Research
Council of the Katholieke Universiteit Leuven (Grant Nos. OT/07/051 and
CIFI), and the institutional support of the Los Alamos National
Laboratory.
NR 41
TC 26
Z9 26
U1 2
U2 12
PU ACOUSTICAL SOC AMER AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 0001-4966
J9 J ACOUST SOC AM
JI J. Acoust. Soc. Am.
PD SEP
PY 2009
VL 126
IS 3
BP 963
EP 972
DI 10.1121/1.3184583
PG 10
WC Acoustics; Audiology & Speech-Language Pathology
SC Acoustics; Audiology & Speech-Language Pathology
GA 494RR
UT WOS:000269833600011
PM 19739709
ER
PT J
AU Park, TJ
Davis, MJ
Vullo, P
Nenoff, TM
Krumhansl, JL
Navrotsky, A
AF Park, Tae-Jin
Davis, Mark J.
Vullo, Paula
Nenoff, Tina M.
Krumhansl, James L.
Navrotsky, Alexandra
TI Thermochemistry and Aqueous Durability of Ternary Glass Forming
Ba-Titanosilicates: Fresnoite (Ba2TiSi2O8) and Ba-Titanite (BaTiSiO5)
SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY
LA English
DT Article
ID NUCLEAR-WASTE IMMOBILIZATION; HIGH-TEMPERATURE CALORIMETRY;
CSALSI2O6-CSTISI2O6.5 JOIN; SUBSTITUTED POLLUCITES; SILICOTITANATE
PHASE; CRYSTAL-CHEMISTRY; MOLECULAR-SIEVE; ION-EXCHANGE; SNL-A; CS
AB Barium titanosilicates are possible oxide forms for the immobilization of short-lived fission products in radioactive waste. Ba2TiSi2O8 (fresnoite) and BaTiSiO5 (Ba-titanite) samples were prepared by a solid-state synthesis. The enthalpies of formation of Ba2TiSi2O8 crystal and glass at 25 degrees C and of BaTiSiO5 glass were obtained from drop solution calorimetry in a molten lead borate (2PbO-B2O3) solvent at 701 degrees C. The enthalpy of formation for fresnoite composition samples from constituent oxides was exothermic and became more exothermic with increasing crystallinity. Differential scanning calorimetry revealed that the crystallization rate of the fresnoite glasses increased with increasing devitrification. A modified Product Consistency Test-Procedure B (PCT-B) was used to collect solubility data on the fresnoite and titanate phases. The tests suggest that both glassy and crystalline fresnoite exhibit favorable aqueous stability and should be explored further as radioactive waste forms for long-term storage.
C1 [Park, Tae-Jin; Navrotsky, Alexandra] Univ Calif Davis, Peter A Rock Thermochem Lab, Davis, CA 95616 USA.
[Park, Tae-Jin; Navrotsky, Alexandra] Univ Calif Davis, NEAT ORU, Davis, CA 95616 USA.
[Davis, Mark J.; Vullo, Paula] SCHOTT N Amer Inc, Duryea, PA 18642 USA.
[Nenoff, Tina M.; Krumhansl, James L.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Navrotsky, A (reprint author), Univ Calif Davis, Peter A Rock Thermochem Lab, Davis, CA 95616 USA.
EM anavrotsky@ucdavis.edu
NR 50
TC 12
Z9 12
U1 4
U2 12
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0002-7820
J9 J AM CERAM SOC
JI J. Am. Ceram. Soc.
PD SEP
PY 2009
VL 92
IS 9
BP 2053
EP 2058
DI 10.1111/j.1551-2916.2009.03141.x
PG 6
WC Materials Science, Ceramics
SC Materials Science
GA 489WT
UT WOS:000269457500023
ER
PT J
AU Garino, TJ
Nenoff, TM
Park, TJ
Navrotsky, A
AF Garino, Terry J.
Nenoff, Tina M.
Park, Tae-Jin
Navrotsky, Alexandra
TI The Crystallization of Ba-Substituted CsTiSi2O6.5 Pollucite Using
CsTiSi2O6.5 Seed Crystals
SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY
LA English
DT Article
ID RAY-POWDER DIFFRACTION; CSALSI2O6-CSTISI2O6.5 JOIN
AB Barium (Ba)-substituted CsTiSi2O6.5 materials of two types, CsxBa1-xTiSi2O(7-x/2) and CsxBa(1-x)/2TiSi2O6.5 were synthesized with the pollucite structure with 1 >= x >= 0.6. When the Ba-substituted precursor materials were heat treated to 850 degrees C for 4 h, a mixture of amorphous and unidentifiable phases formed. However, with the addition of 10 wt% of crystalline CsTiSi2O6.5 to the Ba-containing precursors, nearly single-phase pollucite was obtained after 20 h at 750 degrees C for x >= 0.6. The added crystalline CsTiSi2O6.5 particles act as nuclei that allow the Ba-containing materials to crystallize into the pollucite phase and to avoid the formation of unwanted phases that would otherwise nucleate and grow. These new materials can be used to study the stability of CsTiSi2O6.5 as a durable ceramic waste form, which could accommodate with time both Cs and its decay product, Ba.
C1 [Garino, Terry J.; Nenoff, Tina M.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Park, Tae-Jin; Navrotsky, Alexandra] Univ Calif Davis, Peter A Rock Thermochem Lab, Davis, CA 95616 USA.
[Park, Tae-Jin; Navrotsky, Alexandra] Univ Calif Davis, NEAT, ORU, Davis, CA 95616 USA.
RP Nenoff, TM (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM tmnenof@sandia.gov
FU U.S. Department of Energy [DE-AC04-94AL85000, DE-FC07-07ID14830]
FX This work was supported by the U. S. Department of Energy (NERI Program
Grant: DE-FC07-07ID14830).; The authors thank Ralph Tissot, Nathan
Ockwig, and Dave Rademacher for performing the powder XRD analysis and
Richard Grant for performing the microprobe analysis. Sandia is a
multiprogram laboratory operated by Sandia Corporation, a Lockheed
Martin Company, for the U.S. Department of Energy's National Nuclear
Safety Administration under Contract DE-AC04-94AL85000.
NR 9
TC 6
Z9 6
U1 1
U2 4
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0002-7820
J9 J AM CERAM SOC
JI J. Am. Ceram. Soc.
PD SEP
PY 2009
VL 92
IS 9
BP 2144
EP 2146
DI 10.1111/j.1551-2916.2009.03164.x
PG 3
WC Materials Science, Ceramics
SC Materials Science
GA 489WT
UT WOS:000269457500040
ER
PT J
AU Spraggins, JM
Lloyd, JA
Johnston, MV
Laskin, J
Ridge, DP
AF Spraggins, Jeffrey M.
Lloyd, Julie A.
Johnston, Murray V.
Laskin, Julia
Ridge, Douglas P.
TI Fragmentation Mechanisms of Oxidized Peptides Elucidated by SID, RRKM
Modeling, and Molecular Dynamics
SO JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
LA English
DT Article
ID SURFACE-INDUCED DISSOCIATION; STRUCTURAL MASS-SPECTROMETRY;
OFF-RESONANCE EXCITATION; HYDROXYL RADICAL PROBE; AMINO-ACID-RESIDUES;
GAS-PHASE CLEAVAGE; ASPARTIC-ACID; PROTONATED PEPTIDES; PHOTOCHEMICAL
OXIDATION; SYNCHROTRON RADIOLYSIS
AB The gas-phase fragmentation reactions of singly charged angiotensin II (AngII, DR(+)VYIHPF) and the ozonolysis products AngII+O (DR(+)VY*IHPF), AngII+30 (DR(+)VYIH*PF), and AngII+4O (DR(+)VY*IH*PF) were studied using SID FT-ICR mass spectrometry, RRKM modeling, and molecular dynamics. Oxidation of Tyr (AngII+O) leads to a low-energy charge-remote selective fragmentation channel resulting in the b(4)+O fragment ion. Modification of His (AngII+3O and AngII+4O) leads to a series of new selective dissociation channels. For AngII+3O and AngII+4O, the formation of [MH+3O](+)-45 and [MH+3O](+)-71 are driven by charge-remote processes while it is suggested that b(5) and [MH+3O](+)-88 fragments are a result of charge-directed reactions. Energy-resolved SID experiments and RRKM modeling provide threshold energies and activation entropies for the lowest energy fragmentation channel for each of the parent ions. Fragmentation of the ozonolysis products was found to be controlled by entropic effects. Mechanisms are proposed for each of the new dissociation pathways based on the energies and entropies of activation and parent ion conformations sampled using molecular dynamics. (J Am Soc Mass Spectrom 2009, 20,1579-1592) (C) 2009 Published by Elsevier Inc. on behalf of American Society for Mass Spectrometry
C1 [Spraggins, Jeffrey M.; Lloyd, Julie A.; Johnston, Murray V.; Ridge, Douglas P.] Univ Delaware, Dept Chem & Biochem, Newark, DE 19711 USA.
[Laskin, Julia] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Ridge, DP (reprint author), Univ Delaware, Dept Chem & Biochem, 106 Lamont DuPont Lab, Newark, DE 19711 USA.
EM dougr@udel.edu
RI Ridge, Douglas/A-7539-2013; Laskin, Julia/H-9974-2012
OI Laskin, Julia/0000-0002-4533-9644
FU Summer Research Institute; NSF [DGE 0538555, CHE-0098831, 0541775]
FX The authors acknowledge financial support to JS provided by the Summer
Research Institute in Interfacial and Condensed Phase Chemical Physics
at Pacific Northwest National Laboratory (PNNL), and by the NSF Graduate
Teaching Fellows Program in K-12 Education (DGE 0538555), NSF grant no.
CHE-0098831 to MVJ, and NSF grant no. 0541775 to the University of
Delaware to update FT-MS equipment. FT-ICR MS and energetic experiments
were conducted at the W. R. Wiley Environmental Molecular Sciences
Laboratory (EMSL), a national scientific user facility sponsored by the
U.S. Department of Energy, located at PNNL. The facility is operated by
Battelle for the U.S. Department of Energy. Research at EMSL was carried
out within project 40457 supported by the Office of Basic Energy
Sciences of the U.S. Department of Energy.
NR 72
TC 5
Z9 5
U1 1
U2 12
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 1044-0305
J9 J AM SOC MASS SPECTR
JI J. Am. Soc. Mass Spectrom.
PD SEP
PY 2009
VL 20
IS 9
BP 1579
EP 1592
DI 10.1016/j.jasms.2009.04.012
PG 14
WC Chemistry, Analytical; Chemistry, Physical; Spectroscopy
SC Chemistry; Spectroscopy
GA 507FH
UT WOS:000270836800001
PM 19560936
ER
PT J
AU Mabrouki, R
Kelly, RT
Prior, DC
Shvartsburg, AA
Tang, KQ
Smith, RD
AF Mabrouki, Ridha
Kelly, Ryan T.
Prior, David C.
Shvartsburg, Alexandre A.
Tang, Keqi
Smith, Richard D.
TI Improving FAIMS Sensitivity Using a Planar Geometry with Slit Interfaces
SO JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
LA English
DT Article
ID ION MOBILITY SPECTROMETRY; IONIZATION-MASS-SPECTROMETRY;
GAS-CHROMATOGRAPHIC DETECTOR; FUNNEL INTERFACE; TRANSMISSION EFFICIENCY;
COMPENSATION VOLTAGE; ELECTRIC-FIELD; EMITTER ARRAYS; DYNAMIC-RANGE; MS
AB Differential mobility spectrometry or field asymmetric waveform ion mobility spectrometry (FAIMS) is gaining broad acceptance for analyses of gas-phase ions, especially in conjunction with largely orthogonal separation methods such as mass spectrometry (MS) and/or conventional (drift tube) ion mobility spectrometry. In FAIMS, ions are filtered while passing through a gap between two electrodes that may have planar or curved (in particular, cylindrical) geometry. Despite substantial inherent advantages of the planar configuration and its near-universal adoption in current stand-alone FAIMS devices, commercial FAIMS/MS systems have employed curved FAIMS geometries that can be more effectively interfaced to MS. Here we report a new planar (p-) FAIMS design with slit-shaped entrance and exit apertures that substantially increase ion transmission in and out of the analyzer. The entrance slit interface effectively couples p-FAIMS to multi-emitter electrospray ionization (ESI) sources, improving greatly the ion current introduced to the device and allowing liquid flow rates up to similar to 50 mu L/min. The exit slit interface increases the transmission of ribbon-shaped ion beams output by the p-FAIMS to downstream stages such as a MS. Overall, the ion signal in ESI/FAIMS/MS analyses increases by over an order of magnitude without affecting FAIMS resolution. (J Am Soc Mass Spectrom 2009, 20,1768-1774) (C) 2009 American Society for Mass Spectrometry
C1 [Mabrouki, Ridha; Kelly, Ryan T.; Prior, David C.; Shvartsburg, Alexandre A.; Tang, Keqi; Smith, Richard D.] Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA.
RP Smith, RD (reprint author), Pacific NW Natl Lab, Div Biol Sci, 3335 Q Ave,K8-98,POB 999, Richland, WA 99352 USA.
EM rds@pnl.gov
RI Smith, Richard/J-3664-2012; Kelly, Ryan/B-2999-2008
OI Smith, Richard/0000-0002-2381-2349; Kelly, Ryan/0000-0002-3339-4443
FU National Center for Research Resources [RR018522]; DOE [DE-AC05-76RLO
1830]
FX The authors thank Dr. Jason S. Page and Bill Danielson for major help
with hardware and software development, Dr. Yehia M. Ibrahim for useful
comments, and the National Center for Research Resources for support
(RR018522). Portions of this work were performed in the Environmental
Molecular Sciences Laboratory, a DOE national scientific user facility
located at PNNL. PNNL is a multiprogram national laboratory operated by
Battelle for the DOE under contract DE-AC05-76RLO 1830.
NR 49
TC 17
Z9 17
U1 2
U2 21
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 1044-0305
J9 J AM SOC MASS SPECTR
JI J. Am. Soc. Mass Spectrom.
PD SEP
PY 2009
VL 20
IS 9
BP 1768
EP 1774
DI 10.1016/j.jasms.2009.05.019
PG 7
WC Chemistry, Analytical; Chemistry, Physical; Spectroscopy
SC Chemistry; Spectroscopy
GA 507FH
UT WOS:000270836800023
PM 19616967
ER
PT J
AU Fierro, AO
Simpson, J
LeMone, MA
Straka, JM
Smull, BF
AF Fierro, Alexandre O.
Simpson, Joanne
LeMone, Margaret A.
Straka, Jerry M.
Smull, Bradley F.
TI On How Hot Towers Fuel the Hadley Cell: An Observational and Modeling
Study of Line-Organized Convection in the Equatorial Trough from TOGA
COARE
SO JOURNAL OF THE ATMOSPHERIC SCIENCES
LA English
DT Article
ID EQUIVALENT POTENTIAL TEMPERATURE; VERTICAL VELOCITY EVENTS; AIRBORNE
DOPPLER RADARS; TROPICAL SQUALL-LINE; 9 FEBRUARY 1993; NUMERICAL
SIMULATIONS; OCEANIC CONVECTION; HURRICANE BONNIE; MOIST CONVECTION;
PACIFIC-OCEAN
AB An airflow trajectory analysis was carried out based on an idealized numerical simulation of the nocturnal 9 February 1993 equatorial oceanic squall line observed over the Tropical Ocean and Global Atmosphere Coupled Ocean-Atmosphere Response Experiment (TOGA COARE) ship array. This simulation employed a nonhydrostatic numerical cloud model, which features a sophisticated 12-class bulk microphysics scheme. A second convective system that developed immediately south of the ship array a few hours later under similar environmental conditions was the subject of intensive airborne quad-Doppler radar observations, allowing observed airflow trajectories to be meaningfully compared to those from the model simulation. The results serve to refine the so-called hot tower hypothesis, which postulated the notion of undiluted ascent of boundary layer air to the high troposphere, which has for the first time been tested through coordinated comparisons with both model output and detailed observations.
For parcels originating ahead ( north) of the system near or below cloud base in the boundary layer (BL), the model showed that a majority (>62%) of these trajectories were able to surmount the 10-km level in their lifetime, with about 5% exceeding 14-km altitude, which was near the modeled cloud top (15.5 km). These trajectories revealed that during ascent, most air parcels first experienced a quick decrease of equivalent potential temperature (theta(e)) below 5-km MSL as a result of entrainment of lower ambient theta(e) air. Above the freezing level, ascending parcels experienced an increase in theta(e) with height attributable to latent heat release from ice processes consistent with previous hypotheses. Analogous trajectories derived from the evolving observed airflow during the mature stage of the airborne radar-observed system identified far fewer (similar to 5%) near-BL parcels reaching heights above 10 km than shown by the corresponding simulation. This is attributed to both the idealized nature of the simulation and to the limitations inherent to the radar observations of near-surface convergence in the subcloud layer.
This study shows that latent heat released above the freezing level can compensate for buoyancy reduction by mixing at lower levels, thus enabling air originating in the boundary layer to contribute to the maintenance of both local buoyancy and the large-scale Hadley cell despite acknowledged dilution by mixing along updraft trajectories. A tropical "hot tower'' should thus be redefined as any deep convective cloud with a base in the boundary layer and reaching near the upper-tropospheric outflow layer.
C1 [Fierro, Alexandre O.] NOAA, Atlantic Oceanog & Meteorol Lab, Hurricane Res Div, Miami, FL 33149 USA.
[Simpson, Joanne] NASA, Goddard Space Flight Ctr, Atmospheres Lab, Greenbelt, MD 20771 USA.
[LeMone, Margaret A.] Natl Ctr Atmospher Res, Boulder, CO 80307 USA.
[Straka, Jerry M.] Univ Oklahoma, Sch Meteorol, Norman, OK 73019 USA.
[Smull, Bradley F.] Univ Washington, Dept Atmospher Sci, Seattle, WA 98195 USA.
RP Fierro, AO (reprint author), Los Alamos Natl Lab, EES-16,MS D401, Los Alamos, NM 87545 USA.
EM alexfierro@lanl.gov
RI Fierro, Alexandre/C-4733-2014
OI Fierro, Alexandre/0000-0002-4859-1255
FU National Research Council (NRC); Oklahoma Supercomputing Center for
Education and Research (OSCER); National Science Foundation (NSF)
[ATM-0733539]; National Center of Atmospheric Research (NCAR)
FX We thank the National Research Council (NRC) of the National Academy of
Sciences for generously sponsoring Alexandre Fierro for one year and the
Oklahoma Supercomputing Center for Education and Research (OSCER) for
providing computing resources. Partial support for this research was
also provided by the National Science Foundation (NSF) under the Grant
ATM-0733539. Dr. Joanne Simpson would like to thank W.-K. Tao for all
his help and inspiration over several decades. Dr. Bradley Smull's
involvement has been supported by NSF's Independent Research and
Development (IR/D) program during his assignment there. Dr. Dave
Jorgensen (NOAA/NSSL) generously provided access to archived Doppler
radar data. Dr. Thomas J. Matejka (formerly of NOAA) spearheaded the
observationally derived trajectory analysis. Dr. M. LeMone would like to
thank NSF for supporting the National Center of Atmospheric Research
(NCAR). We also would like to thank Dr. Edward R. Mansell and Dr.
Songlak Kang for supplying the software to produce the joint probability
distributions. The authors would also like to thank Dr. Ed Zipser and
the anonymous reviewer for their helpful comments.
NR 53
TC 38
Z9 38
U1 2
U2 10
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0022-4928
J9 J ATMOS SCI
JI J. Atmos. Sci.
PD SEP
PY 2009
VL 66
IS 9
BP 2730
EP 2746
DI 10.1175/2009JAS3017.1
PG 17
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 494LM
UT WOS:000269814400012
ER
PT J
AU Kamiya, Y
Kawashima, N
Batista, CD
AF Kamiya, Yoshitomo
Kawashima, Naoki
Batista, Cristian D.
TI Finite-Temperature Transition in the Spin-Dimer Antiferromagnet
BaCuSi2O6
SO JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
LA English
DT Article
DE interlayer frustration; finite-temperature phase transition; order by
disorder; Z(2) symmetry breaking; BaCuSi2O6
ID XY MODEL; DISORDER
AB We consider a classical XY-like Hamiltonian on a body-centered tetragonal lattice, focusing on the role of interlayer frustration. A three-dimensional (3D) ordered phase is realized via, thermal fluctuations, breaking the mirror-image reflection symmetry in addition to the XY symmetry. A heuristic field-theoretical model of the transition has a decoupled fixed point in the 3D XY universality, and our Monte Carlo simulation suggests that there is such a temperature region where long-wavelength fluctuations can be described by this fixed point. However, it is shown using scaling arguments that the decoupled fixed point is unstable against a fluctuation-induced biquadratic interaction, indicating that a crossover to nontrivial critical phenomena with different exponents appears as one approaches the critical point beyond the transient temperature region. This new scenario clearly contradicts the previous notion of the 3D XY universality.
C1 [Kamiya, Yoshitomo; Kawashima, Naoki] Univ Tokyo, Inst Solid State Phys, Chiba 2278581, Japan.
[Batista, Cristian D.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Kamiya, Y (reprint author), Univ Tokyo, Inst Solid State Phys, Chiba 2278581, Japan.
RI Kamiya, Yoshitomo/B-6307-2012; Batista, Cristian/J-8008-2016
OI Kamiya, Yoshitomo/0000-0002-0758-0234;
FU MEXT [9340109, 19052004]
FX We thank H. Tsunetsugu, M. Oshikawa, and D. Uzunov for valuable
discussions. We also thank T. Suzuki for his critical reading of the
manuscript. The computation in the present work is executed on computers
at the Supercomputer Center, Institute for Solid State Physics,
University of Tokyo. The present work is financially supported by the
MEXT Global COE Program "the Physical Science Frontier", of the Ministry
of Education, Culture, Sports, Science and Technology (MEXT) a
Grant-in-Aid for Scientific Research B (19340109), a Grant-in-Aid for
Scientific Research on Priority Areas "Novel States of Matter Induced by
Frustration" (19052004) from Ministry of Education, Culture, Sports,
Science and Technology, and the Next Generation Supercomputing Project,
Nanoscience Program, MEXT.
NR 24
TC 4
Z9 4
U1 0
U2 10
PU PHYSICAL SOC JAPAN
PI TOKYO
PA YUSHIMA URBAN BUILDING 5F, 2-31-22 YUSHIMA, BUNKYO-KU, TOKYO, 113-0034,
JAPAN
SN 0031-9015
J9 J PHYS SOC JPN
JI J. Phys. Soc. Jpn.
PD SEP
PY 2009
VL 78
IS 9
AR 094008
DI 10.1143/JPSJ.78.094008
PG 8
WC Physics, Multidisciplinary
SC Physics
GA 497OA
UT WOS:000270068100020
ER
PT J
AU Kim, IJ
Quigley, D
To, M
Raz, D
Kang, HC
Mao, JH
Kim, J
Jablons, D
Balmain, A
AF Kim, Il-Jin
Quigley, David
To, Minh
Raz, Dan
Kang, Hio Chung
Mao Jian-Hua
Kim, Jae
Jablons, David
Balmain, Allan
TI A systems genetics approach to individualized lung cancer diagnosis and
therapy
SO JOURNAL OF THORACIC ONCOLOGY
LA English
DT Meeting Abstract
C1 [Kim, Il-Jin; Quigley, David; To, Minh; Kang, Hio Chung; Balmain, Allan] UCSF Canc Ctr, San Francisco, CA USA.
[To, Minh; Raz, Dan; Kim, Jae; Jablons, David] UCSF, Dept Surg, Thorac Oncol Program, San Francisco, CA USA.
[Mao Jian-Hua] Lawrence Berkeley Natl Lab, Berkeley, CA USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 1556-0864
J9 J THORAC ONCOL
JI J. Thorac. Oncol.
PD SEP
PY 2009
VL 4
IS 9
BP S403
EP S403
PG 1
WC Oncology; Respiratory System
SC Oncology; Respiratory System
GA 490JC
UT WOS:000269496001174
ER
PT J
AU Pan, CX
Li, T
He, ML
White, RD
Gandara, D
Mack, PC
Lara, PN
Turteltaub, K
Henderson, P
AF Pan Chong-xian
Li Tao
He Miaoling
White, Ralph de Vere
Gandara, David
Mack, Philip C.
Lara, Primo N.
Turteltaub, Kenneth
Henderson, Paul
TI Preclinical studies for a phase 0 microdosing trial to identify
chemoresistance in non-small cell lung cancer
SO JOURNAL OF THORACIC ONCOLOGY
LA English
DT Meeting Abstract
C1 [Pan Chong-xian; Li Tao; He Miaoling; White, Ralph de Vere; Gandara, David; Mack, Philip C.; Lara, Primo N.; Henderson, Paul] Univ Calif Davis, Sacramento, CA 95817 USA.
[Turteltaub, Kenneth] Lawrence Livermore Natl Lab, Livermore, CA USA.
NR 0
TC 0
Z9 0
U1 0
U2 2
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 1556-0864
J9 J THORAC ONCOL
JI J. Thorac. Oncol.
PD SEP
PY 2009
VL 4
IS 9
BP S554
EP S554
PG 1
WC Oncology; Respiratory System
SC Oncology; Respiratory System
GA 490JC
UT WOS:000269496001471
ER
PT J
AU Unal, B
Sato, Y
McCarty, KF
Bartelt, NC
Duden, T
Jenks, CJ
Schmid, AK
Thiel, PA
AF Uenal, Baris
Sato, Yu
McCarty, K. F.
Bartelt, N. C.
Duden, T.
Jenks, C. J.
Schmid, A. K.
Thiel, P. A.
TI Work function of a quasicrystal surface: Icosahedral Al-Pd-Mn
SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
LA English
DT Article
DE aluminium alloys; manganese alloys; palladium alloys; quasicrystals;
work function
ID 3D TRANSITION-METALS; ELECTRON-MICROSCOPY; LIGHT LOADS; FRICTION;
ENERGY; ADHESION
C1 [Uenal, Baris] Iowa State Univ, Ames Lab, Dept Mat Sci & Engn, Ames, IA 50011 USA.
[Sato, Yu; Duden, T.; Schmid, A. K.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[McCarty, K. F.; Bartelt, N. C.] Sandia Natl Labs, Livermore, CA 94550 USA.
[Thiel, P. A.] Iowa State Univ, Ames Lab, Dept Chem, Ames, IA 50011 USA.
RP Unal, B (reprint author), Iowa State Univ, Ames Lab, Dept Mat Sci & Engn, Ames, IA 50011 USA.
EM barisunaltr3@yahoo.com
RI McCarty, Kevin/F-9368-2012; Bartelt, Norman/G-2927-2012
OI McCarty, Kevin/0000-0002-8601-079X;
FU U. S. Department of Energy (USDOE) [DE-AC02-07CH11358, DE-AC04-94AL8500,
DE-AC02-05CH11231]
FX This work was supported by three main sources: the Office of Science,
Basic Energy Sciences, Materials Science Division of the U. S.
Department of Energy (USDOE) under Contract Nos. DE-AC02-07CH11358
through the Ames laboratory (B. U., C.J.J, and P.A.T), DE-AC04-94AL8500
through the Sandia National laboratories (K.F.M. and N.C.B.), and
DE-AC02-05CH11231 through the Lawrence Berkeley National Laboratories
(Y.S., T. D., and A.K.S.)
NR 20
TC 12
Z9 12
U1 0
U2 10
PU A V S AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 0734-2101
EI 1520-8559
J9 J VAC SCI TECHNOL A
JI J. Vac. Sci. Technol. A
PD SEP
PY 2009
VL 27
IS 5
BP 1249
EP 1250
DI 10.1116/1.3168561
PG 2
WC Materials Science, Coatings & Films; Physics, Applied
SC Materials Science; Physics
GA 490SC
UT WOS:000269523600023
ER
PT J
AU Teixeira, FS
Salvadori, MC
Cattani, M
Carneiro, SM
Brown, IG
AF Teixeira, F. S.
Salvadori, M. C.
Cattani, Mauro
Carneiro, S. M.
Brown, I. G.
TI Surface plasmon resonance of gold nanoparticles formed by cathodic arc
plasma ion implantation into polymer
SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
LA English
DT Article
ID DYNAMIC COMPOSITION CHANGES; PERCOLATION PHENOMENA; METAL NANOPARTICLES;
SIMULATION; DEPOSITION; CONDUCTIVITY; TRIDYN; FIELD
AB Shallow subsurface layers of gold nanoclusters were formed in polymethylmethacrylate (PMMA) polymer by very low energy (49 eV) gold ion implantation. The ion implantation process was modeled by computer simulation and accurately predicted the layer depth and width. Transmission electron microscopy (TEM) was used to image the buried layer and individual nanoclusters; the layer width was similar to 6-8 nm and the cluster diameter was similar to 5-6 nm. Surface plasmon resonance (SPR) absorption effects were observed by UV-visible spectroscopy. The TEM and SPR results were related to prior measurements of electrical conductivity of Au-doped PMMA, and excellent consistency was found with a model of electrical conductivity in which either at low implantation dose the individual nanoclusters are separated and do not physically touch each other, or at higher implantation dose the nanoclusters touch each other to form a random resistor network (percolation model). (C) 2009 American Vacuum Society. [DOI: 10.1116/1.3231449]
C1 [Teixeira, F. S.] Univ Sao Paulo, Polytech Sch, BR-05508900 Sao Paulo, Brazil.
[Salvadori, M. C.; Cattani, Mauro] Univ Sao Paulo, Inst Phys, BR-05315970 Sao Paulo, Brazil.
[Carneiro, S. M.] Inst Butantan, Lab Biol Celular, BR-05503900 Sao Paulo, Brazil.
[Brown, I. G.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Teixeira, FS (reprint author), Univ Sao Paulo, Polytech Sch, Ave Prof Luciano Gualberto,Travessa R-158, BR-05508900 Sao Paulo, Brazil.
EM mcsalvadori@if.usp.br; igbrown@lbl.gov
RI Salvadori, Maria Cecilia/A-9379-2013; Teixeira, Fernanda/A-9395-2013;
Fluidos Complexos, INCT/H-9172-2013; Cattani, Mauro/N-9749-2013
FU Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP); Conselho
Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq), Brazil
FX This work was supported by the Fundacao de Amparo a Pesquisa do Estado
de Sao Paulo (FAPESP) and the Conselho Nacional de Desenvolvimento
Cientifico e Tecnologico (CNPq), Brazil. The authors are grateful to the
Institute of Ion Beam Physics and Materials Research at the
Forschungszentrum Dresden-Rossendorf, Germany, for the TRIDYN_FZR
computer simulation code. They also thank "Laboratorio de Materiais por
Feixes Ionicos" (LAMFI) for the RBS analysis and "Laboratorio de
Cristais Ionicos, Filmes Finos e Datacao" (LACIFID) for UV-visible-NIR
spectrophotometry and, in particular, J. F. D Chubaci for valuable
discussions about this characterization technique.
NR 41
TC 16
Z9 16
U1 2
U2 7
PU A V S AMER INST PHYSICS
PI MELVILLE
PA STE 1 NO 1, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747-4502 USA
SN 1071-1023
J9 J VAC SCI TECHNOL B
JI J. Vac. Sci. Technol. B
PD SEP
PY 2009
VL 27
IS 5
BP 2242
EP 2247
DI 10.1116/1.3231449
PG 6
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Physics, Applied
SC Engineering; Science & Technology - Other Topics; Physics
GA 502HH
UT WOS:000270447400033
ER
PT J
AU Korber, BT
Letvin, NL
Haynes, BF
AF Korber, Bette T.
Letvin, Norman L.
Haynes, Barton F.
TI T-Cell Vaccine Strategies for Human Immunodeficiency Virus, the Virus
with a Thousand Faces
SO JOURNAL OF VIROLOGY
LA English
DT Review
ID TYPE-1 SUBTYPE-C; CONSENSUS ENVELOPE GLYCOPROTEIN; HIV-1 INFECTION;
RHESUS-MONKEYS; IMMUNE-RESPONSES; ANKARA MVA; VIRAL LOAD; CLASS-I;
NEUTRALIZING ANTIBODIES; LYMPHOCYTE EPITOPES
C1 [Korber, Bette T.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Korber, Bette T.] Santa Fe Inst, Santa Fe, NM 87501 USA.
[Letvin, Norman L.] Harvard Univ, Sch Med, Beth Israel Deaconess Med Ctr, Div Viral Pathogenesis, Boston, MA 02115 USA.
[Haynes, Barton F.] Duke Univ, Med Ctr, Duke Human Vaccine Inst, Durham, NC 27710 USA.
RP Korber, BT (reprint author), Los Alamos Natl Lab, Div Theoret, MS K710, Los Alamos, NM 87545 USA.
EM btk@lanl.gov
OI Korber, Bette/0000-0002-2026-5757
NR 104
TC 100
Z9 105
U1 0
U2 2
PU AMER SOC MICROBIOLOGY
PI WASHINGTON
PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA
SN 0022-538X
J9 J VIROL
JI J. Virol.
PD SEP
PY 2009
VL 83
IS 17
BP 8300
EP 8314
DI 10.1128/JVI.00114-09
PG 15
WC Virology
SC Virology
GA 485LF
UT WOS:000269122300001
PM 19439471
ER
PT J
AU Davis, MJ
Janke, R
AF Davis, Michael J.
Janke, Robert
TI Development of a Probabilistic Timing Model for the Ingestion of Tap
Water
SO JOURNAL OF WATER RESOURCES PLANNING AND MANAGEMENT-ASCE
LA English
DT Article
ID DISTRIBUTION-SYSTEM; EXPOSURE MODELS; HUMANS; DRINKING; IMPACTS; THIRST
AB A contamination event in a water distribution system can result in adverse health impacts to individuals consuming contaminated water from the system. Assessing impacts to such consumers requires accounting for the timing of exposures of individuals to tap-water contaminants that have time-varying concentrations. Here we present a probabilistic model for the timing of ingestion of tap water that we developed for use in the U.S. Environmental Protection Agency's Threat Ensemble Vulnerability Assessment and Sensor Placement Tool, which is designed to perform consequence assessments for contamination events in water distribution systems. We also present a statistical analysis of the timing of ingestion activity using data collected by the American Time Use Survey. The results of the analysis provide the basis for our model, which accounts for individual variability in ingestion timing and provides a series of potential ingestion times for tap water. It can be combined with a model for ingestion volume to perform exposure assessments and applied in cases for which the use of characteristics typical of the United States is appropriate.
C1 [Davis, Michael J.] Argonne Natl Lab, Div Environm Sci, Argonne, IL 60439 USA.
[Janke, Robert] US EPA, Natl Homeland Secur Res Ctr, Cincinnati, OH 45268 USA.
RP Davis, MJ (reprint author), Argonne Natl Lab, Div Environm Sci, EVS 900,9700 S Cass Ave, Argonne, IL 60439 USA.
EM mike_davis@anl.gov; janke.robert@epamail.epa.gov
FU U.S. Department of Energy [DE-AC02-06CH11357]
FX The U. S. Environmental Protection Agency through the Office of Research
and Development funded, managed, and participated in the research
described here under an interagency agreement. The views expressed in
this paper are those of the writers and do not necessarily reflect the
views or policies of the USEPA. Mention of trade names or commercial
products does not constitute endorsement or recommendation for use. Work
at Argonne National Laboratory was sponsored by the USEPA under an
interagency agreement through U.S. Department of Energy Grant No.
DE-AC02-06CH11357. Karen Hamrick, Economic Research Service, U.S.
Department of Agriculture, provided helpful advice on the use and
interpretation of the ATUS data. We acknowledge helpful comments from
anonymous reviewers. All data analysis and preparation of graphics for
this paper were done with R (R Development Core Team 2007).
NR 22
TC 16
Z9 16
U1 0
U2 4
PU ASCE-AMER SOC CIVIL ENGINEERS
PI RESTON
PA 1801 ALEXANDER BELL DR, RESTON, VA 20191-4400 USA
SN 0733-9496
J9 J WATER RES PL-ASCE
JI J. Water Resour. Plan. Manage.-ASCE
PD SEP-OCT
PY 2009
VL 135
IS 5
BP 397
EP 405
DI 10.1061/(ASCE)0733-9496(2009)135:5(397)
PG 9
WC Engineering, Civil; Water Resources
SC Engineering; Water Resources
GA 484QM
UT WOS:000269061900011
ER
PT J
AU Mardaljevic, J
Heschong, L
Lee, E
AF Mardaljevic, J.
Heschong, L.
Lee, E.
TI Daylight metrics and energy savings
SO LIGHTING RESEARCH & TECHNOLOGY
LA English
DT Article
ID VENETIAN BLINDS; PERFORMANCE; VALIDATION; SIMULATION; OFFICE; MODEL;
ENVIRONMENTS; DESIGN; LIGHT; PROBE
AB The drive towards sustainable, low-energy buildings has increased the need for simple, yet accurate methods to evaluate whether a 'daylit' building meets minimum standards for energy and human comfort performance. Current metrics do not account for the temporal and spatial aspects of daylight, nor of occupants comfort or interventions. This paper reviews the historical basis of current compliance methods for achieving daylit buildings, proposes a technical basis for development of better metrics, and provides two case study examples to stimulate dialogue on how metrics can be applied in a practical, real-world context.
C1 [Mardaljevic, J.] De Montfort Univ, Inst Energy & Sustainable Dev, Leicester LE1 9BH, Leics, England.
[Heschong, L.] Heschong Mahone Grp Inc, Fair Oaks, CA 95628 USA.
[Lee, E.] Univ Calif Berkeley, Lawrence Berkeley Lab, Bldg Technol Program, Environm Energy Technol Div, Berkeley, CA 94720 USA.
RP Mardaljevic, J (reprint author), De Montfort Univ, Inst Energy & Sustainable Dev, Leicester LE1 9BH, Leics, England.
EM jm@dmu.ac.uk
NR 64
TC 78
Z9 79
U1 7
U2 17
PU SAGE PUBLICATIONS LTD
PI LONDON
PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
SN 1477-1535
J9 LIGHTING RES TECHNOL
JI Lighting Res. Technol.
PD SEP
PY 2009
VL 41
IS 3
BP 261
EP 283
DI 10.1177/1477153509339703
PG 23
WC Construction & Building Technology; Optics
SC Construction & Building Technology; Optics
GA 490YO
UT WOS:000269544200006
ER
PT J
AU Boswell, R
Shelander, D
Lee, M
Latham, T
Collett, T
Guerin, G
Moridis, G
Reagan, M
Goldberg, D
AF Boswell, Ray
Shelander, Dianna
Lee, Myung
Latham, Tom
Collett, Tim
Guerin, Gilles
Moridis, George
Reagan, Matthew
Goldberg, Dave
TI Occurrence of gas hydrate in Oligocene Frio sand: Alaminos Canyon Block
818: Northern Gulf of Mexico
SO MARINE AND PETROLEUM GEOLOGY
LA English
DT Article
DE Gas hydrate; Gulf of Mexico; Alaminos Canyon; Frio sand
ID PERDIDO FOLD BELT; CONTINENTAL-SLOPE; SEA-FLOOR; MISSISSIPPI CANYON;
BEARING SEDIMENTS; KEATHLEY CANYON; DEEP-WATER; VELOCITIES; SYSTEMS;
SEEPS
AB A unique set of high-quality downhole shallow subsurface well log data combined with industry standard 3D seismic data from the Alaminos Canyon area has enabled the first detailed description of a concentrated gas hydrate accumulation within sand in the Gulf of Mexico. The gas hydrate occurs within very fine grained, immature volcaniclastic sands of the Oligocene Frio sand. Analysis of well data acquired from the Alaminos Canyon Block 818 #1 ("Tigershark") well shows a total gas hydrate occurrence 13 m thick, with inferred gas hydrate saturation as high as 80% of sediment pore space. Average porosity in the reservoir is estimated from log data at approximately 42%. Permeability in the absence of gas hydrates, as revealed from the analysis of core samples retrieved from the well, ranges from 600 to 1500 millidarcies. The 3-D seismic data reveals a strong reflector consistent with significant increase in acoustic velocities that correlates with the top of the gas-hydrate-bearing sand. This reflector extends across an area of approximately 0.8 km(2) and delineates the minimal probable extent of the gas hydrate accumulation. The base of the inferred gas-hydrate zone also correlates well with a very strong seismic reflector that indicates transition into units of significantly reduced acoustic velocity. Seismic inversion analyses indicate uniformly high gas-hydrate saturations throughout the region where the Frio sand exists within the gas hydrate stability zone. Numerical modeling of the potential production of natural gas from the interpreted accumulation indicates serious challenges for depressurization-based production in settings with strong potential pressure Support from extensive underlying aquifers. Published by Elsevier Ltd.
C1 [Boswell, Ray] US DOE, Natl Energy Technol Lab, Morgantown, WV 26507 USA.
[Shelander, Dianna] Schlumberger Reservoir Seism Serv, Houston, TX USA.
[Lee, Myung; Collett, Tim] US Geol Survey, Denver, CO 80225 USA.
[Latham, Tom] Chevron N Amer Explorat & Prod Co, Houston, TX USA.
[Guerin, Gilles; Goldberg, Dave] Columbia Univ, Lamont Doherty Earth Observ, New York, NY USA.
[Moridis, George; Reagan, Matthew] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Boswell, R (reprint author), US DOE, Natl Energy Technol Lab, 3610 Collins Ferry Rd, Morgantown, WV 26507 USA.
EM ray.boswell@netl.doe.gov
RI Reagan, Matthew/D-1129-2015;
OI Reagan, Matthew/0000-0001-6225-4928; Boswell, Ray/0000-0002-3824-2967
NR 41
TC 25
Z9 27
U1 0
U2 9
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0264-8172
J9 MAR PETROL GEOL
JI Mar. Pet. Geol.
PD SEP
PY 2009
VL 26
IS 8
BP 1499
EP 1512
DI 10.1016/j.marpetgeo.2009.03.005
PG 14
WC Geosciences, Multidisciplinary
SC Geology
GA 500UF
UT WOS:000270330300013
ER
PT J
AU Kennedy, AJ
Steevens, JA
Lotufo, GR
Farrar, JD
Reiss, MR
Kropp, RK
Doi, J
Bridges, TS
AF Kennedy, Alan J.
Steevens, Jeffery A.
Lotufo, Guilherme R.
Farrar, John D.
Reiss, Mark R.
Kropp, Roy K.
Doi, Jon
Bridges, Todd S.
TI A comparison of acute and chronic toxicity methods for marine sediments
SO MARINE ENVIRONMENTAL RESEARCH
LA English
DT Article
DE Sediment toxicity; Bioassay; Chronic; Sublethal; Amphipod; Polychaete
ID AMPHIPOD LEPTOCHEIRUS-PLUMULOSUS; ESTUARINE AMPHIPOD; FRESH-WATER;
NEANTHES ARENACEODENTATA; RHEPOXYNIUS-ABRONIUS; QUALITY GUIDELINES;
AMPELISCA-ABDITA; HYALELLA-AZTECA; TESTS; BIOASSAY
AB Sediment toxicity tests are valuable tools for assessing the potential effects of contaminated sediments in dredged material evaluations because they inherently address complexity (e.g.. unknown contaminants, mixtures, bioavailability). Although there is a need to understand the chronic and sublethal impacts of contaminants, it is common to conduct only short-term lethality tests in evaluations of marine sediments. Chronic toxicity methods for marine sediments have been developed but the efficacy of these methods is less documented. In this evaluation of marine sediments collected from the New York/New Jersey (NY/NJ) Harbor, three 10-d acute toxicity test methods (Ampelisca abdita, Leptocheirus plumulosus, Americamysis bahia) and three chronic and sublethal test methods (28-d L plumulosus, 20- and 28-d Neanthes arenaceodentata) were applied by three testing laboratories. Although the N. arenaceodentata and A. bahia tests did not indicate significant toxicity for the sediments tested in this study, these methods have been reported useful in evaluating other sediments. The 10-d A. abdita, 10-d L. plumulosus and 28-d L plumulosus tests were comparable between laboratories, indicating 29-43%, 29%, and 43-71% of the tested sediments as potentially toxic. The 28-d L. plumulosus method was the only chronic toxicity test that responded to the test sediments in this study. The 28-d L plumulosus endpoint magnitudes were related to sediment chemistry and the sublethal endpoints were reduced as much or more than acute lethality endpoints. However, intra-treatment sublethal endpoint variability was greater, compromising detection of statistical significance. In this study, the chronic L plumulosus test method was less consistent among laboratories relative to acute test methods, identifying potential for toxicity in a similar number (or slightly more) NY/NJ Harbor sediments. Published by Elsevier Ltd.
C1 [Kennedy, Alan J.; Steevens, Jeffery A.; Lotufo, Guilherme R.; Farrar, John D.; Bridges, Todd S.] USA, Engn Res & Dev Ctr, Environm Lab, CEERD EP R, Vicksburg, MS 39180 USA.
[Reiss, Mark R.] US EPA, New York, NY 10007 USA.
[Kropp, Roy K.] Marine Sci Lab, Battelle Pacific NW Div, Sequim, WA 98382 USA.
[Doi, Jon] Aqua Survey Inc, Flemington, NJ 08822 USA.
RP Kennedy, AJ (reprint author), USA, Engn Res & Dev Ctr, Environm Lab, CEERD EP R, 3909 Halls Ferry Rd, Vicksburg, MS 39180 USA.
EM Alan.J.Kennedy@usace.army.mil
FU US Army Corps of Engineers New York District; US Environmental
Protection Agency
FX We thank US Army Corps of Engineers New York District and the US
Environmental Protection Agency for sponsoring this research. We thank
Monte Greges, Oksana Yaremko (US ACE), Walter Berry (US EPA), and Ken
Finkelstein (NOAA) and three anonymous reviewers for enhancing technical
clarity. Mark Graves (US ACE) provided GIS mapping assistance.
Analytical chemistry was completed by the analytical chemistry branch
(Doug Taggert, Richard Karn, Anthony Bednar). We acknowledge support for
the sediment collection effort by Mr. Tom Wyche (CENAN). Deb
Clestreicher and Jen Chappell provided technical editing. Permission has
been granted by the Chief of Engineers to publish this material. The
work presented in this paper has been internally reviewed by US EPA, its
publication however does not signify that the contents reflect the views
of the Agency.
NR 53
TC 15
Z9 15
U1 0
U2 20
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0141-1136
J9 MAR ENVIRON RES
JI Mar. Environ. Res.
PD SEP
PY 2009
VL 68
IS 3
BP 118
EP 127
DI 10.1016/j.marenvres.2009.04.010
PG 10
WC Environmental Sciences; Marine & Freshwater Biology; Toxicology
SC Environmental Sciences & Ecology; Marine & Freshwater Biology;
Toxicology
GA 478UV
UT WOS:000268614800003
PM 19481793
ER
PT J
AU Drewry, MA
Smith, RA
Phang, AP
Yan, DW
Wilcox, P
Roach, DP
AF Drewry, Melody A.
Smith, Robert A.
Phang, Albert P.
Yan, Dawei
Wilcox, Paul
Roach, Dennis P.
TI Ultrasonic Techniques for Detection of Weak Adhesion
SO MATERIALS EVALUATION
LA English
DT Article
DE nondestructive testing; ultrasonics; adhesive bonds
ID ENVIRONMENTAL DEGRADATION; JOINTS
AB If a nondestructive testing technique for assuring bond strength can be developed, evaluated and approved, then the use of adhesive bonds in critical structures could become widespread. Both postmanufacture and in-service testing techniques are required. While normal disbonds can be detected easily using ultrasonic testing or other methods, weak bonds and zero volume disbonds have proven extremely elusive. Six ultrasonic techniques are presented in this paper: two conventional (double through transmission and pulse/echo) and four advanced (wideband ultrasonic spectroscopy, nonlinear ultrasonics, oblique incidence ultrasound and shear wave resonance). This paper explains these techniques and reviews their application in previous work, and gives results from recent work on specimens with contaminated adhesive. Encouraging results obtained with double through transmission, pulse/echo and ultrasonic spectroscopy are discussed. The other techniques were found to be inconclusive for contaminated bond tines.
C1 [Drewry, Melody A.; Smith, Robert A.; Phang, Albert P.] QinetiQ Ltd, NDE Grp, Farnborough GU14 0LX, Hants, England.
[Yan, Dawei] Univ Bristol, Dept Mech Engn, Bristol BS8 1TR, Avon, England.
[Roach, Dennis P.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Drewry, MA (reprint author), QinetiQ Ltd, NDE Grp, Cody Technol Pk, Farnborough GU14 0LX, Hants, England.
EM mdrewry@qinetiq.com
OI Wilcox, Paul/0000-0002-8569-8975
NR 19
TC 3
Z9 3
U1 2
U2 7
PU AMER SOC NONDESTRUCTIVE TEST
PI COLUMBUS
PA 1711 ARLINGATE LANE PO BOX 28518, COLUMBUS, OH 43228-0518 USA
SN 0025-5327
J9 MATER EVAL
JI Mater. Eval.
PD SEP
PY 2009
VL 67
IS 9
BP 1048
EP 1058
PG 11
WC Materials Science, Characterization & Testing
SC Materials Science
GA 500TW
UT WOS:000270329200011
ER
PT J
AU Sokolov, AN
Roberts, ME
Bao, ZA
AF Sokolov, Anatoliy N.
Roberts, Mark E.
Bao, Zhenan
TI Fabrication of low-cost electronic biosensors
SO MATERIALS TODAY
LA English
DT Article
ID THIN-FILM-TRANSISTORS; FIELD-EFFECT TRANSISTORS; LIGHT-EMITTING-DIODES;
ORGANIC TRANSISTORS; CONJUGATED POLYMERS; HIGH-PERFORMANCE; ELECTRICAL
CHARACTERISTICS; PHOTOVOLTAIC CELLS; BIOLOGICAL SENSORS; GAS SENSORS
AB The fabrication of miniaturized, low-cost, flexible sensors based on organic electronics via high-throughput techniques (e.g. printing) is expected to provide important benefits for applications in chemical and biological detection. The rapid maturation of synthetic methodology in the field of organic electronics has lead to the creation of new materials at an incredible rate and an increased understanding of semiconductor-analyte interactions. Owing to these advances, we have seen steady improvements in sensitivity, stability, and specificity, in addition to the detection of a wide range of chemical analytes. In this review, we address the fabrication, challenges, and sensor performance of organic transistor-based detection devices with an outlook toward developing sensors capable of operating in biologically relevant media.
C1 [Sokolov, Anatoliy N.; Bao, Zhenan] Stanford Univ, Dept Chem Engn, Stanford, CA 94305 USA.
[Roberts, Mark E.] Sandia Natl Labs, Ctr Integrated Nanotechnol, Albuquerque, NM 87185 USA.
RP Bao, ZA (reprint author), Stanford Univ, Dept Chem Engn, Stauffer 3,381 North South Mall, Stanford, CA 94305 USA.
EM zbao@stanford.edu
RI Sokolov, Anatoliy/C-1155-2012; Roberts, Mark/H-9865-2016
OI Sokolov, Anatoliy/0000-0003-0476-8052; Roberts, Mark/0000-0001-5971-6650
NR 83
TC 102
Z9 104
U1 5
U2 69
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1369-7021
EI 1873-4103
J9 MATER TODAY
JI Mater. Today
PD SEP
PY 2009
VL 12
IS 9
BP 12
EP 20
PG 9
WC Materials Science, Multidisciplinary
SC Materials Science
GA 503VH
UT WOS:000270568800011
ER
PT J
AU Noy, A
Artyukhin, AB
Misra, N
AF Noy, Aleksandr
Artyukhin, Alexander B.
Misra, Nipun
TI Bionanoelectronics with 1D materials
SO MATERIALS TODAY
LA English
DT Review
ID FIELD-EFFECT TRANSISTORS; WALLED CARBON NANOTUBES; DIMENSIONAL
LIPID-BILAYERS; SILICON NANOWIRE DEVICES; LABEL-FREE DETECTION;
ELECTRICAL DETECTION; ELECTRONIC-PROPERTIES; PEPTIDE NANOTUBES; FET
DEVICES; PROTEIN
AB Rapid progress in materials science and electrical engineering has led to the development of miniature electronic platforms that have devices and components as small as the main components of live cells. These developments open up an exciting possibility of building integrated systems in which electronic and biological components function side-by-side. However, to realize this vision of bionanoelectronics, researchers need to overcome a number of challenges ranging from materials incompatibility to drastically different operation modes. Fortunately, recent developments in biosensing, and device-level and tissue-level integration with nanomaterials have started to address these challenges.
C1 [Noy, Aleksandr; Artyukhin, Alexander B.; Misra, Nipun] Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Livermore, CA 94550 USA.
RP Noy, A (reprint author), Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, 7000 East Ave, Livermore, CA 94550 USA.
EM noy1@llnl.gov
FU BES Biomolecular Materials Program; UC-LLNL Research Program; U.S.
Department of Energy [DE-AC52-07NA27344]
FX A. N. acknowledges support from BES Biomolecular Materials Program and
UC-LLNL Research Program, and use of the Molecular Foundry Facilities at
LBNL. Parts of this work were performed under the auspices of the U.S.
Department of Energy by Lawrence Livermore National Laboratory under
Contract DE-AC52-07NA27344.
NR 112
TC 20
Z9 20
U1 2
U2 38
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1369-7021
EI 1873-4103
J9 MATER TODAY
JI Mater. Today
PD SEP
PY 2009
VL 12
IS 9
BP 22
EP 31
PG 10
WC Materials Science, Multidisciplinary
SC Materials Science
GA 503VH
UT WOS:000270568800012
ER
PT J
AU Boisen, A
Thundat, T
AF Boisen, Anja
Thundat, Thomas
TI Design & fabrication of cantilever array biosensors
SO MATERIALS TODAY
LA English
DT Review
ID SELF-ASSEMBLED MONOLAYERS; ATOMIC-FORCE MICROSCOPE; INDUCED SURFACE
STRESS; NANOMECHANICAL DETECTION; MICROCANTILEVER SENSORS;
FREQUENCY-RESPONSE; READ-OUT; DNA; HYBRIDIZATION; TRANSDUCERS
AB Surface immobilization of functional receptors on microfabricated cantilever arrays offers a new paradigm for the development of biosensors based on nanomechanics. Microcantilever-based systems are capable of real-time, multiplexed detection of unlabeled disease markers in extremely small volumes of samples. Currently available fabrication technology will allow the integration of electronic readout and sample introduction into a single unit, decreasing the device size, detection time, and cost. Biosensing technologies based on microfabricated cantilever arrays involving multiple cantilevers, electronic processing, and even local telemetry on a single chip have the potential of satisfying the need for highly sensitive and selective multiple-target detection in very small samples. Here we will review the design and fabrication process of cantilever-based biosensors.
C1 [Boisen, Anja] Tech Univ Denmark, DK-2800 Lyngby, Denmark.
[Thundat, Thomas] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Boisen, A (reprint author), Tech Univ Denmark, Anker Engelunds Vej 1,Bldg 101A, DK-2800 Lyngby, Denmark.
RI Boisen, Anja/F-9442-2011
OI Boisen, Anja/0000-0002-9918-6567
FU DOE Office of Science, Biological and Environmental Research;
UT-Battelle [DE-AC05-000R22725]
FX We would like to thank our colleagues and collaborators cited in this
review for their contributions. We are indebted to Jacob Thaysen,
Sangmin Jeon, Seonghwan Kim, Larry Senesac, and T. L. Ferrell for help
with figures. T. Thundat would like to thank the DOE Office of Science,
Biological and Environmental Research, for its support. Oak Ridge
National Laboratory is managed by UT-Battelle under contract No.
DE-AC05-000R22725.
NR 67
TC 43
Z9 43
U1 4
U2 36
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 1369-7021
EI 1873-4103
J9 MATER TODAY
JI Mater. Today
PD SEP
PY 2009
VL 12
IS 9
BP 32
EP 38
PG 7
WC Materials Science, Multidisciplinary
SC Materials Science
GA 503VH
UT WOS:000270568800013
ER
PT J
AU Talijan, N
Cosovic, V
Stajic-Trosic, J
Grujic, A
Zak, T
Lee, Z
Radmilovic, V
AF Talijan, Nadezda
Cosovic, Vladan
Stajic-Trosic, Jasna
Grujic, Aleksandar
Zak, Tomas
Lee, Zonghoon
Radmilovic, Velimir
TI Thermomagnetic Analysis of Nanocrystalline Nd4.5Fe77B18.5 Alloy
SO MATERIALS TRANSACTIONS
LA English
DT Article
DE low-neodymium neodymium-iron-boron alloy; thermomagnetic measurements;
X-ray diffraction; magnetic properties
ID FE3B/ND2FE14B NANOCOMPOSITE MAGNETS; PERMANENT-MAGNETS; PHASE;
MICROSTRUCTURE; FE3B; DIFFRACTION
AB Changes in the phase composition and crystallite size of a rapid quenched Nd4.5Fe77B18.5 alloy, caused by thermomagnetic measurements (TM) have been studied using XRD methods of phase analysis. crystallite size and lattice microstrain determination. Structural changes in regard to optimal magnetic state were additionally analyzed by TEM. Magnetic properties in optimal magnetic state and after TM were observed using room temperature SQUID measurements. The obtained experimental results suggest the Fe3B/Nd2Fe14B and partly alpha-Fe nanocomposite structure of the alloy in the optimized magnetic state. with mean crystallite size (< 30nm). After TM. an increased amount of alpha-Fe phase, presence of different oxide and Fe-B phases as well as growth of crystallites are found to be the main reasons for the observed quality loss of hard magnetic properties. [doi:10.2320/matertrans.M2009138]
C1 [Talijan, Nadezda; Cosovic, Vladan; Stajic-Trosic, Jasna; Grujic, Aleksandar] Univ Belgrade, Inst Chem Technol & Met, Belgrade 11000, Serbia.
[Zak, Tomas] Acad Sci Czech Republic, Vvi, Inst Phys Mat, CZ-61662 Brno, Czech Republic.
[Lee, Zonghoon; Radmilovic, Velimir] Univ Calif Berkeley, Lawrence Berkeley Lab, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA.
RP Talijan, N (reprint author), Univ Belgrade, Inst Chem Technol & Met, Belgrade 11000, Serbia.
RI Lee, Zonghoon/G-1474-2011; Zak, Tomas/G-1454-2014
OI Lee, Zonghoon/0000-0003-3246-4072;
FU Serbian Ministry of Science [OI 142035B]; Czech Ministry of education,
youth and sports [1 M05 12]; National Center for Electron Microscopy,
Lawrence Berkeley Lab; U.S. Department of Energy [DE-AC0205CH11231]
FX This work has been supported by the Serbian Ministry of Science, project
OI 142035B and by the Czech Ministry of education, youth and sports,
project 1 M05 12. The authors acknowledge support of the National Center
for Electron Microscopy, Lawrence Berkeley Lab, which is supported by
the U.S. Department of Energy under Contract # DE-AC0205CH11231.
NR 27
TC 4
Z9 4
U1 1
U2 7
PU JAPAN INST METALS
PI SENDAI
PA 1-14-32, ICHIBANCHO, AOBA-KU, SENDAI, 980-8544, JAPAN
SN 1345-9678
EI 1347-5320
J9 MATER TRANS
JI Mater. Trans.
PD SEP
PY 2009
VL 50
IS 9
BP 2302
EP 2307
DI 10.2320/matertrans.M2009138
PG 6
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 512JA
UT WOS:000271242900030
ER
PT J
AU Jiao, XM
Einstein, DR
Dyedov, V
Carson, JP
AF Jiao, Xiangmin
Einstein, Daniel R.
Dyedov, Vladimir
Carson, James P.
TI Automatic identification and truncation of boundary outlets in complex
imaging-derived biomedical geometries
SO MEDICAL & BIOLOGICAL ENGINEERING & COMPUTING
LA English
DT Article
DE Medical imaging; Outlets; Automation; Mesh generation
ID ARTERIAL TREE; RAT; VASCULATURE; MORPHOMETRY; VALIDATION; EXTRACTION;
ALGORITHM; OBJECTS; MODELS
AB Efficient and accurate reconstruction of imaging-derived geometries and subsequent quality mesh generation are enabling technologies for both clinical and research simulations. A challenging part of this process is the introduction of computable, orthogonal boundary patches, namely, the outlets, into treed structures, such as vasculature, arterial or airway trees. We present efficient and robust algorithms for automatically identifying and truncating the outlets for complex geometries. Our approach is based on a conceptual decomposition of objects into tips, segments, and branches, where the tips determine the outlets. We define the tips by introducing a novel concept called the average interior center of curvature and identify the tips that are stable and noise resistant. We compute well-defined orthogonal planes, which truncate the tips into outlets. The rims of the outlets are connected into curves, and the outlets are then closed using Delaunay triangulation. We illustrate the effectiveness and robustness of our approach with a variety of complex lung and coronary artery geometries.
C1 [Jiao, Xiangmin; Dyedov, Vladimir] SUNY Stony Brook, Dept Appl Math & Stat, Stony Brook, NY 11794 USA.
[Einstein, Daniel R.; Carson, James P.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Jiao, XM (reprint author), SUNY Stony Brook, Dept Appl Math & Stat, Stony Brook, NY 11794 USA.
EM jiao@ams.sunysb.edu; daniel.einstein@pnl.gov; vladimir@ams.sunysb.edu;
james.carson@pnl.gov
OI Jiao, Xiangmin/0000-0002-7111-9813
FU National Heart and Blood Institute Award [1RO1HL073598-01A1]; National
Institute of Environmental Health Sciences Award [P01 ES011617];
National Science Foundation award [DMS-0809285]
FX Research was supported by the National Heart and Blood Institute Award
1RO1HL073598-01A1; by the National Institute of Environmental Health
Sciences Award P01 ES011617 and by the National Science Foundation award
DMS-0809285. The authors would also like to acknowledge Dr. Ghassan
Kassab for graciously providing the coronary CT data, and Dr. Kevin
Minard for the lung MR data.
NR 26
TC 8
Z9 8
U1 0
U2 2
PU SPRINGER HEIDELBERG
PI HEIDELBERG
PA TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
SN 0140-0118
J9 MED BIOL ENG COMPUT
JI Med. Biol. Eng. Comput.
PD SEP
PY 2009
VL 47
IS 9
BP 989
EP 999
DI 10.1007/s11517-009-0501-9
PG 11
WC Computer Science, Interdisciplinary Applications; Engineering,
Biomedical; Mathematical & Computational Biology; Medical Informatics
SC Computer Science; Engineering; Mathematical & Computational Biology;
Medical Informatics
GA 489MN
UT WOS:000269424300008
PM 19526263
ER
PT J
AU Martin, LP
Hodge, AM
Campbell, GH
AF Martin, L. Peter
Hodge, Andrea M.
Campbell, Geoffrey H.
TI Compaction Behavior and Mechanical Properties of Uniaxially Pressed Bi-W
Composites
SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND
MATERIALS SCIENCE
LA English
DT Article
ID ULTRASONIC VELOCITY; POROUS MATERIALS; PERCOLATION THEORY; POWDER
COMPACTION; COLD COMPACTION; ELASTIC-MODULUS; YOUNGS MODULUS; AVERAGE
STRESS; POROSITY; CONSOLIDATION
AB Powder metallurgy is a useful route to forming particulate composite materials; however, the densification of hard and soft powder mixtures is usually inhibited by the more refractory phase. The Bi-W powder compacts were uniaxially pressed at room temperature and the compaction behavior and mechanical properties were evaluated. Pressing was performed in incremental steps from similar to 1 to 540 MPa. After each step, the pressure was relieved and the thickness and sound-wave transit time were measured in situ (in the die), in order to determine the density and sound-wave velocity in the compact. The data show that the unreinforced Bi powder compacts to similar to 98 pct density at 540 MPa. The W reinforcement inhibits the densification process, resulting in increased levels of residual porosity. The compaction behavior was evaluated using a modified Heckel equation, while the porosity dependence of the ultrasonically determined elastic modulus was described by a site percolation approach. Postcompaction sound-wave velocity and Vicker's hardness measurements show < 5 pct anisotropy between the axial (pressing) and radial directions. The mechanical characterization illustrates the competing effects of the W reinforcement and the associated residual porosity.
C1 [Martin, L. Peter] Tyco Thermal Controls, Menlo Pk, CA 94025 USA.
[Martin, L. Peter; Hodge, Andrea M.; Campbell, Geoffrey H.] Lawrence Livermore Natl Lab, Condensed Matter & Mat Sci Div, Livermore, CA 94550 USA.
[Hodge, Andrea M.] Univ So Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 USA.
RP Martin, LP (reprint author), Tyco Thermal Controls, Menlo Pk, CA 94025 USA.
EM ghcampbell@llnl.gov
RI Campbell, Geoffrey/F-7681-2010
FU Lawrence Livermore National Laboratory (LLNL) [DE-AC52-07NA27344,
06-SI005]; Laboratory Directed Research and Development Program at the
LLNL
FX This work was performed under the auspices of the United States
Department of Energy by the Lawrence Livermore National Laboratory
(LLNL), under Contract No. DE-AC52-07NA27344. Project No. 06-SI005 was
funded by the Laboratory Directed Research and Development Program at
the LLNL.
NR 49
TC 2
Z9 2
U1 1
U2 5
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1073-5623
J9 METALL MATER TRANS A
JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci.
PD SEP
PY 2009
VL 40A
IS 9
BP 2124
EP 2136
DI 10.1007/s11661-009-9935-9
PG 13
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 483QH
UT WOS:000268982100014
ER
PT J
AU Ajdelsztajn, L
Dannenberg, J
Lopez, J
Yang, N
Farmer, J
Lavernia, EJ
AF Ajdelsztajn, L.
Dannenberg, J.
Lopez, J.
Yang, N.
Farmer, J.
Lavernia, E. J.
TI High-Velocity Oxygen Fuel Thermal Spray of Fe-Based Amorphous Alloy: a
Numerical and Experimental Study
SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND
MATERIALS SCIENCE
LA English
DT Article
ID BULK METALLIC-GLASS; IN-FLIGHT BEHAVIOR; LIQUID; GAS;
ZR41.2TI13.8CU12.5NI10.0BE22.5; PARTICLES; TORCH; FLOW
AB The fabrication of dense coatings with appropriate properties using a high velocity oxygen fuel (HVOF) spray process requires an in-depth understanding of the complete gas flow field and particle behavior during the process. A computational fluid dynamics (CFD) model is implemented to investigate the gas flow behavior that occurs during the HVOF process and a simplified one-dimensional decoupled model of the in-flight thermal behavior of the amorphous Fe-based powder particles was developed and applied for three different spray conditions. The numerical results were used to rationalize the different coating microstructures described in the experimental results. Low porosity and amorphous coatings were produced using two different particle size distributions (16 to 25 mu m and 25 to 53 mu m). The amorphous characteristics of the powder were retained in the coating due to melting and rapid solidification in the case of very fine powder or ligaments (< 16 mu m) and to the fact that the crystallization temperature was not reached in the case of the large particles (16 to 53 mu m).
C1 [Ajdelsztajn, L.] GE Global Res, Niskayuna, NY 12309 USA.
[Dannenberg, J.; Lavernia, E. J.] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA.
[Lopez, J.] Univ Politecn Cartagena, ETSII, Dept Ingn Mat & Fabricat, E-30202 Cartagena, Spain.
[Farmer, J.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Ajdelsztajn, L (reprint author), GE Global Res, Niskayuna, NY 12309 USA.
EM ajdelsztajn@ge.com
RI Lavernia, Enrique/I-6472-2013
OI Lavernia, Enrique/0000-0003-2124-8964
FU Lawrence Livermore National Laboratory [B558563]; Spanish Ministerio de
Educacion y Ciencia [PR2005-0296]
FX This work is supported by the Lawrence Livermore National Laboratory
under Contract No. B558563. One of the authors (JL) also gratefully
acknowledges the support of the Spanish Ministerio de Educacion y
Ciencia under Grant No. PR2005-0296.
NR 28
TC 4
Z9 4
U1 3
U2 20
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1073-5623
J9 METALL MATER TRANS A
JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci.
PD SEP
PY 2009
VL 40A
IS 9
BP 2231
EP 2240
DI 10.1007/s11661-009-9900-7
PG 10
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 483QH
UT WOS:000268982100025
ER
PT J
AU Tanner, DM
AF Tanner, D. M.
TI MEMS reliability: Where are we now?
SO MICROELECTRONICS RELIABILITY
LA English
DT Article; Proceedings Paper
CT 20th European Symposium on Reliability of Electron Devices, Failure
Physics and Analysis
CY OCT 05-09, 2009
CL Arcachon, FRANCE
ID SWITCHES
AB This paper reviews the significant successes in MEMS products from a reliability perspective. MEMS reliability is challenging and can be device and process dependent, but exercising the proper reliability techniques very early in product development has yielded success for many manufacturers. The reliability concerns of various devices are discussed including ink jet printhead, inertial sensors, pressure sensors, micro-mirror arrays, and the emerging applications of RF switches and resonators. Metal contacting RF switches are susceptible to hydrocarbon contamination which can increase the contact resistance over cycle count. Packaging techniques are described in the context of the whole reliability program. (C) 2009 Elsevier Ltd. All rights reserved.
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Tanner, DM (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM tannerdm@sandia.gov
NR 42
TC 41
Z9 45
U1 1
U2 24
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0026-2714
J9 MICROELECTRON RELIAB
JI Microelectron. Reliab.
PD SEP-NOV
PY 2009
VL 49
IS 9-11
SI SI
BP 937
EP 940
DI 10.1016/j.microrel.2009.06.014
PG 4
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Physics, Applied
SC Engineering; Science & Technology - Other Topics; Physics
GA 504JG
UT WOS:000270611700002
ER
PT J
AU Weiss, L
AF Weiss, Leonard
TI Israel's Future and Iran's Nuclear Program
SO MIDDLE EAST POLICY
LA English
DT Article
C1 [Weiss, Leonard] Stanford Univ, Ctr Int Secur & Cooperat, Stanford, CA 94305 USA.
[Weiss, Leonard] Lawrence Livermore Natl Lab, Livermore, CA USA.
RP Weiss, L (reprint author), Stanford Univ, Ctr Int Secur & Cooperat, Stanford, CA 94305 USA.
NR 26
TC 0
Z9 0
U1 0
U2 8
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 1061-1924
J9 MIDDLE EAST POLICY
JI Middle East Policy
PD FAL
PY 2009
VL 16
IS 3
BP 79
EP 88
PG 10
WC Area Studies; International Relations
SC Area Studies; International Relations
GA 494JI
UT WOS:000269808500006
ER
PT J
AU Desai, TG
Nerikar, P
Uberuaga, BP
AF Desai, Tapan G.
Nerikar, Pankaj
Uberuaga, Blas P.
TI The role of grain boundary structure in stress-induced phase
transformation in UO2
SO MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING
LA English
DT Article; Proceedings Paper
CT Symposium on Multiscale Modeling of Micristructure Evolution in
Materials held at the 4th International Conference on Multiscale
Modeling of Materials
CY OCT 27-31, 2008
CL Florida State Univ, Tallahassee, FL
HO Florida State Univ
ID MOLECULAR-DYNAMICS; SIMULATION
AB Recently, we reported on a phase transformation in UO2 aided by the presence of high-energy amorphous grain boundaries (Desai and Uberuaga 2009 Scr. Mater. 60 878). Here, we examine the role that the structure of the grain boundary plays in aiding this phase transformation. By examining three bicrystalline systems with different types of grain boundaries (amorphous, Sigma 5 tilt and Sigma 5 twist), we study the influence on the phase transformation behavior by the critical applied stress to induce the phase transformation, the effects of grain size and the grain boundary type. We find that there is a critical applied stress below which the phase transformation does not occur, and that the phase transformation occurs more readily in systems with smaller grain sizes. Finally, we observe a weak dependence on the applied stress to cause the phase transformation with the grain boundary energy.
C1 [Desai, Tapan G.] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
[Nerikar, Pankaj] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA.
[Nerikar, Pankaj; Uberuaga, Blas P.] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
RP Desai, TG (reprint author), Idaho Natl Lab, Idaho Falls, ID 83415 USA.
NR 9
TC 2
Z9 2
U1 0
U2 7
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0965-0393
J9 MODEL SIMUL MATER SC
JI Model. Simul. Mater. Sci. Eng.
PD SEP
PY 2009
VL 17
IS 6
AR 064001
DI 10.1088/0965-0393/17/6/064001
PG 10
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA 487BK
UT WOS:000269245200002
ER
PT J
AU Millett, PC
Rokkam, S
El-Azab, A
Tonks, M
Wolf, D
AF Millett, Paul C.
Rokkam, Srujan
El-Azab, Anter
Tonks, Michael
Wolf, Dieter
TI Void nucleation and growth in irradiated polycrystalline metals: a
phase-field model
SO MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING
LA English
DT Article; Proceedings Paper
CT Symposium on Multiscale Modeling of Micristructure Evolution in
Materials held at the 4th International Conference on Multiscale
Modeling of Materials
CY OCT 27-31, 2008
CL Florida State Univ, Tallahassee, FL
HO Florida State Univ
ID SINK STRENGTHS; MICROSTRUCTURE; ACCUMULATION; SIMULATION; PARAMETERS;
ALLOYS; SYSTEM
AB We present a phase-field model for void formation in polycrystalline metals with vacancy concentrations exceeding the thermal equilibrium values. By incorporating a coupled set of Cahn-Hilliard and Allen-Cahn equations, the model captures several relevant processes including vacancy annihilation and nucleation at grain boundaries (GBs), vacancy diffusion toward sinks (including GBs and void surfaces) as well as void nucleation and growth due to vacancy supersaturations occurring in the grain interiors. Illustrative results are presented that characterize the rate of annihilation of the vacancy population at the GB sinks, as well as the formation of void denuded zones adjacent to GBs in bicrystalline and polycrystalline samples, the width of which is found to depend on both the vacancy diffusivity and the vacancy production rate.
C1 [Millett, Paul C.; Tonks, Michael; Wolf, Dieter] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
[Rokkam, Srujan; El-Azab, Anter] Florida State Univ, Tallahassee, FL 32310 USA.
RP Millett, PC (reprint author), Idaho Natl Lab, Idaho Falls, ID 83415 USA.
EM Paul.Millett@inl.gov
RI Rokkam, Srujan/E-7061-2010; Madruga, Santiago/D-2984-2012
NR 20
TC 15
Z9 16
U1 2
U2 21
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0965-0393
EI 1361-651X
J9 MODEL SIMUL MATER SC
JI Model. Simul. Mater. Sci. Eng.
PD SEP
PY 2009
VL 17
IS 6
AR 064003
DI 10.1088/0965-0393/17/6/064003
PG 12
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA 487BK
UT WOS:000269245200004
ER
PT J
AU Prakash, A
Lebensohn, RA
AF Prakash, A.
Lebensohn, R. A.
TI Simulation of micromechanical behavior of polycrystals: finite elements
versus fast Fourier transforms
SO MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING
LA English
DT Article; Proceedings Paper
CT Symposium on Multiscale Modeling of Micristructure Evolution in
Materials held at the 4th International Conference on Multiscale
Modeling of Materials
CY OCT 27-31, 2008
CL Florida State Univ, Tallahassee, FL
HO Florida State Univ
ID CRYSTAL PLASTICITY; FIELD FLUCTUATIONS; TEXTURE EVOLUTION; VISCOPLASTIC
POLYCRYSTALS; NONLINEAR COMPOSITES; ALLOY AZ31; DEFORMATION; MODEL;
STRAIN; MICROSTRUCTURE
AB In this work, we compare finite element and fast Fourier transform approaches for the prediction of the micromechanical behavior of polycrystals. Both approaches are full-field approaches and use the same visco-plastic single crystal constitutive law. We investigate the texture and the heterogeneity of the inter- and intragranular stress and strain fields obtained from the two models. Additionally, we also look into their computational performance. Two cases-rolling of aluminum and wire drawing of tungsten-are used to evaluate the predictions of the two models. Results from both the models are similar, when large grain distortions do not occur in the polycrystal. The finite element simulations were found to be highly computationally intensive, in comparison with the fast Fourier transform simulations.
C1 [Prakash, A.] Fraunhofer Inst Werkstoffmech, D-79108 Freiburg, Germany.
[Lebensohn, R. A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Prakash, A (reprint author), Fraunhofer Inst Werkstoffmech, D-79108 Freiburg, Germany.
EM prakash@iwm.fraunhofer.de; lebenso@lanl.gov
RI Lebensohn, Ricardo/A-2494-2008; Prakash, Arun/C-2101-2009
OI Lebensohn, Ricardo/0000-0002-3152-9105; Prakash,
Arun/0000-0003-0795-5777
NR 33
TC 34
Z9 34
U1 1
U2 13
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0965-0393
J9 MODEL SIMUL MATER SC
JI Model. Simul. Mater. Sci. Eng.
PD SEP
PY 2009
VL 17
IS 6
AR 064010
DI 10.1088/0965-0393/17/6/064010
PG 16
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA 487BK
UT WOS:000269245200011
ER
PT J
AU Rokkam, S
El-Azab, A
Millett, P
Wolf, D
AF Rokkam, Srujan
El-Azab, Anter
Millett, Paul
Wolf, Dieter
TI Phase field modeling of void nucleation and growth in irradiated metals
SO MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING
LA English
DT Article; Proceedings Paper
CT Symposium on Multiscale Modeling of Micristructure Evolution in
Materials held at the 4th International Conference on Multiscale
Modeling of Materials
CY OCT 27-31, 2008
CL Florida State Univ, Tallahassee, FL
HO Florida State Univ
ID SINK STRENGTHS; MICROSTRUCTURE; RADIATION; EVOLUTION; KINETICS; ALLOYS;
STEELS
AB Motivated by the need to develop a spatially resolved theory of irradiation-induced microstructure evolution in metals, we present a phase field model for void formation in metals with vacancy concentrations exceeding the thermal equilibrium values. This model, which is phenomenological in nature, is cast in the form of coupled Cahn-Hilliard and Allen-Cahn type equations governing the dynamics of the vacancy concentration field and the void microstructure in the matrix, respectively. The model allows for a unified treatment of void nucleation and growth under the condition of random generation of vacancies, which is similar to vacancy generation by collision cascade in irradiated materials. The basic features of the model are illustrated using two-dimensional solutions for the cases of void growth and shrinkage in supersaturated and undersaturated vacancy fields, void-void interactions, as well as the spontaneous nucleation and growth of a large population of voids.
C1 [El-Azab, Anter] Florida State Univ, Dept Comp Sci, Tallahassee, FL 32310 USA.
[Millett, Paul; Wolf, Dieter] Idaho Natl Lab, Dept Mat Sci, Idaho Falls, ID 83415 USA.
[Rokkam, Srujan] Florida State Univ, Dept Mech Engn, Tallahassee, FL 32310 USA.
RP El-Azab, A (reprint author), Florida State Univ, Dept Comp Sci, Tallahassee, FL 32310 USA.
EM aelazab@fsu.edu
RI Rokkam, Srujan/E-7061-2010; Madruga, Santiago/D-2984-2012
NR 29
TC 29
Z9 30
U1 4
U2 27
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0965-0393
EI 1361-651X
J9 MODEL SIMUL MATER SC
JI Model. Simul. Mater. Sci. Eng.
PD SEP
PY 2009
VL 17
IS 6
AR 064002
DI 10.1088/0965-0393/17/6/064002
PG 18
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA 487BK
UT WOS:000269245200003
ER
PT J
AU Liu, Y
Warfield, L
Zhang, C
Luo, J
Allen, J
Lang, WH
Ranish, J
Shokat, KM
Hahn, S
AF Liu, Ying
Warfield, Linda
Zhang, Chao
Luo, Jie
Allen, Jasmina
Lang, Walter H.
Ranish, Jeffrey
Shokat, Kevan M.
Hahn, Steven
TI Phosphorylation of the Transcription Elongation Factor Spt5 by Yeast
Bur1 Kinase Stimulates Recruitment of the PAF Complex
SO MOLECULAR AND CELLULAR BIOLOGY
LA English
DT Article
ID RNA-POLYMERASE-II; CYCLIN-DEPENDENT KINASE; HISTONE H2B
MONOUBIQUITINATION; TEFB-MEDIATED PHOSPHORYLATION;
SACCHAROMYCES-CEREVISIAE; TERMINAL DOMAIN; PROTEIN-KINASE; PREINITIATION
COMPLEX; STATISTICAL-MODEL; MASS-SPECTROMETRY
AB The Saccharomyces cerevisiae kinase Bur1 is involved in coupling transcription elongation to chromatin modification, but not all important Bur1 targets in the elongation complex are known. Using a chemical genetics strategy wherein Bur1 kinase was engineered to be regulated by a specific inhibitor, we found that Bur1 phosphorylates the Spt5 C-terminal repeat domain (CTD) both in vivo and in isolated elongation complexes in vitro. Deletion of the Spt5 CTD or mutation of the Spt5 serines targeted by Bur1 reduces recruitment of the PAF complex, which functions to recruit factors involved in chromatin modification and mRNA maturation to elongating polymerase II (Pol II). Deletion of the Spt5 CTD showed the same defect in PAF recruitment as rapid inhibition of Bur1 kinase activity, and this Spt5 mutation led to a decrease in histone H3K4 trimethylation. Brief inhibition of Bur1 kinase activity in vivo also led to a significant decrease in phosphorylation of the Pol II CTD at Ser-2, showing that Bur1 also contributes to Pol II Ser-2 phosphorylation. Genetic results suggest that Bur1 is essential for growth because it targets multiple factors that play distinct roles in transcription.
C1 [Liu, Ying; Warfield, Linda; Hahn, Steven] Fred Hutchinson Canc Res Ctr, Div Basic Sci, Seattle, WA 98109 USA.
[Zhang, Chao; Allen, Jasmina; Shokat, Kevan M.] Univ Calif San Francisco, Dept Cellular & Mol Pharmacol, San Francisco, CA 94158 USA.
[Luo, Jie; Ranish, Jeffrey] Inst Syst Biol, Seattle, WA 98103 USA.
[Lang, Walter H.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
RP Hahn, S (reprint author), Fred Hutchinson Canc Res Ctr, Div Basic Sci, 1100 Fairview Ave N,MS A1-162, Seattle, WA 98109 USA.
EM shahn@fhcrc.org
FU NIH [5RO1GM53451, T32 CA09657]; NIGMS [PM50 GMO76547]; Center for
Systems Biology [2R01EB001987]
FX This work was supported by grant no. 5RO1GM53451 to S. H., grant NIH T32
CA09657 to Y.L., NIGMS grant PM50 GMO76547/Center for Systems Biology to
J.R., and grant no. 2R01EB001987 to K.M.S.
NR 68
TC 83
Z9 83
U1 0
U2 2
PU AMER SOC MICROBIOLOGY
PI WASHINGTON
PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA
SN 0270-7306
J9 MOL CELL BIOL
JI Mol. Cell. Biol.
PD SEP 1
PY 2009
VL 29
IS 17
BP 4852
EP 4863
DI 10.1128/MCB.00609-09
PG 12
WC Biochemistry & Molecular Biology; Cell Biology
SC Biochemistry & Molecular Biology; Cell Biology
GA 481LS
UT WOS:000268813100022
PM 19581288
ER
PT J
AU Peacock, MM
Beard, KH
O'Neill, EM
Kirchoff, VS
Peters, MB
AF Peacock, Mary M.
Beard, Karen H.
O'Neill, Eric M.
Kirchoff, Veronica S.
Peters, Maureen B.
TI Strong founder effects and low genetic diversity in introduced
populations of Coqui frogs
SO MOLECULAR ECOLOGY
LA English
DT Article
DE amphibian; bottlenecks; drift; Hawaii; invasive; microsatellites;
mitochondrial DNA; Puerto Rico
ID ELEUTHERODACTYLUS-COQUI; INVASIVE FROG; PUERTO-RICO; HAWAII;
CONSERVATION; LEPTODACTYLIDAE; ANURA; INCREASES; SOFTWARE; IMPACTS
AB The success of non-native species may depend on the genetic resources maintained through the invasion process. The Coqui (Eleutherodactylus coqui), a frog endemic to Puerto Rico, was introduced to Hawaii in the late 1980s via the horticulture trade, and has become an aggressive invader. To explore whether genetic diversity and population structure changed with the introduction, we assessed individuals from 15 populations across the Hawaiian Islands and 13 populations across Puerto Rico using six to nine polymorphic microsatellite loci and five dorsolateral colour patterns. Allelic richness (R(T)) and gene diversity were significantly higher in Puerto Rico than in Hawaii populations. Hawaii also had fewer colour patterns (two versus three to five per population) than Puerto Rico. We found no isolation by distance in the introduced range, even though it exists in the native range. Results suggest extensive mixing among frog populations across Hawaii, and that their spread has been facilitated by humans. Like previous research, our results suggest that Hawaiian Coquis were founded by individuals from sites around San Juan, but unlike previous research the colour pattern and molecular genetic data (nuclear and mtDNA) support two separate introductions, one on the island of Hawaii and one on Maui. Coquis are successful invaders in Hawaii despite the loss of genetic variation. Future introductions may increase genetic variation and potentially its range.
C1 [Beard, Karen H.] Utah State Univ, Dept Wildland Resources, Logan, UT 84322 USA.
[Beard, Karen H.] Utah State Univ, Ctr Ecol, Logan, UT 84322 USA.
[Peacock, Mary M.; Kirchoff, Veronica S.] Univ Nevada, Dept Biol, Reno, NV 89557 USA.
[O'Neill, Eric M.] Utah State Univ, Dept Biol, Logan, UT 84322 USA.
[Peters, Maureen B.] Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA.
RP Beard, KH (reprint author), Utah State Univ, Dept Wildland Resources, Logan, UT 84322 USA.
EM karen.beard@usu.edu
RI Beard, Karen/B-7177-2011
FU Jack H. Berryman Institute; USDA/APHIS Wildlife Services; NSF
FX Funding was provided by the Jack H. Berryman Institute, USDA/APHIS
Wildlife Services, and a NSF ADVANCE grant. Permits were provided by the
State of Hawaii Department of Land and Natural Resources (permit number:
EX 06-06), the Puerto Rico Departemento de Recourses y Naturales (Permit
number: 06-IC-019) and USU IACUC (#1145 and #1251). We thank J. Poulos,
L. Giovanetto, A. Huff, N. Tuttle, M. Higashi, N. Huff, C. Blair, K.
Juanarajs and J. Verlinde for field assistance; K. Gunderson and S.
William who sent us frog samples; T. Glenn and the group at SREL; and J.
Gibson for maps.
NR 43
TC 23
Z9 23
U1 2
U2 47
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0962-1083
J9 MOL ECOL
JI Mol. Ecol.
PD SEP
PY 2009
VL 18
IS 17
BP 3603
EP 3615
DI 10.1111/j.1365-294X.2009.04308.x
PG 13
WC Biochemistry & Molecular Biology; Ecology; Evolutionary Biology
SC Biochemistry & Molecular Biology; Environmental Sciences & Ecology;
Evolutionary Biology
GA 486IP
UT WOS:000269189900005
PM 19674300
ER
PT J
AU Obel, N
Erben, V
Schwarz, T
Kuhnel, S
Fodor, A
Pauly, M
AF Obel, Nicolai
Erben, Veronika
Schwarz, Tatjana
Kuhnel, Stefan
Fodor, Andrea
Pauly, Markus
TI Microanalysis of Plant Cell Wall Polysaccharides
SO MOLECULAR PLANT
LA English
DT Article
DE Carbohydrate metabolism; xyloglucan; mass spectrometry; cell expansion;
cell walls; Arabidopsis; laser microdissection
ID CARBOHYDRATE GEL-ELECTROPHORESIS; LASER-CAPTURE MICRODISSECTION;
ARABIDOPSIS-THALIANA; MASS-SPECTROMETRY; XYLOGLUCAN; BIOSYNTHESIS;
IDENTIFICATION; GENES; OLIGOSACCHARIDES; ARCHITECTURE
AB Oligosaccharide Mass Profiling (OLIMP) allows a fast and sensitive assessment of cell wall polymer structure when coupled with Matrix Assisted Laser Desorption Ionisation Time Of Flight Mass Spectrometry (MALDI-TOF MS). The short time required for sample preparation and analysis makes possible the study of a wide range of plant organs, revealing a high degree of heterogeneity in the substitution pattern of wall polymers such as the cross-linking glycan xyloglucan and the pectic polysaccharide homogalacturonan. The high sensitivity of MALDI-TOF allows the use of small amounts of samples, thus making it possible to investigate the wall structure of single cell types when material is collected by such methods as laser micro-dissection. As an example, the analysis of the xyloglucan structure in the leaf cell types outer epidermis layer, entire epidermis cell layer, palisade mesophyll cells, and vascular bundles were investigated. OLIMP is amenable to in situ wall analysis, where wall polymers are analyzed on unprepared plant tissue itself without first isolating cell walls. In addition, OLIMP enables analysis of wall polymers in Golgi-enriched fractions, the location of nascent matrix polysaccharide biosynthesis, enabling separation of the processes of wall biosynthesis versus post-deposition apoplastic metabolism. These new tools will make possible a semi-quantitative analysis of the cell wall at an unprecedented level.
C1 [Obel, Nicolai; Schwarz, Tatjana; Fodor, Andrea; Pauly, Markus] Max Planck Inst Mol Plant Physiol, D-14476 Potsdam, Germany.
[Erben, Veronika] Helmhotz Ctr Munich, Inst Biol & Med Imaging, D-85764 Neuherberg, Germany.
[Kuhnel, Stefan] Wageningen Univ, Dept Agrotechnol & Food Sci, Food Chem Lab, NL-6703 HD Wageningen, Netherlands.
[Pauly, Markus] Michigan State Univ, DOE Plant Res Lab, E Lansing, MI 48864 USA.
RP Pauly, M (reprint author), Max Planck Inst Mol Plant Physiol, Muhlenberg 1, D-14476 Potsdam, Germany.
EM paulymar@msu.edu
RI Pauly, Markus/B-5895-2008
OI Pauly, Markus/0000-0002-3116-2198
FU German GABI [0312277D]
FX This work was supported by the German GABI project 0312277D.
NR 46
TC 55
Z9 56
U1 2
U2 34
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 1674-2052
EI 1752-9867
J9 MOL PLANT
JI Mol. Plant.
PD SEP
PY 2009
VL 2
IS 5
BP 922
EP 932
DI 10.1093/mp/ssp046
PG 11
WC Biochemistry & Molecular Biology; Plant Sciences
SC Biochemistry & Molecular Biology; Plant Sciences
GA 499KL
UT WOS:000270218900010
PM 19825669
ER
PT J
AU Hedenstrom, M
Wiklund-Lindstrom, S
Oman, T
Lu, FC
Gerber, L
Schatz, P
Sundberg, B
Ralph, J
AF Hedenstrom, Mattias
Wiklund-Lindstrom, Susanne
Oman, Tommy
Lu, Fachuang
Gerber, Lorenz
Schatz, Paul
Sundberg, Bjorn
Ralph, John
TI Identification of Lignin and Polysaccharide Modifications in Populus
Wood by Chemometric Analysis of 2D NMR Spectra from Dissolved Cell Walls
SO MOLECULAR PLANT
LA English
DT Article
DE Aspen; biostatistics; cell walls; multivariate data analysis; NMR
spectroscopy; tension wood
ID SOLUTION-STATE NMR; TENSION WOOD; ORTHOGONAL PROJECTIONS;
DOWN-REGULATION; DFRC METHOD; POPLAR; SPECTROSCOPY; LIGNIFICATION;
CELLULOSE; REDUCTASE
AB 2D (13)C-(1)H HSQC NMR spectroscopy of acetylated cell walls in solution gives a detailed fingerprint that can be used to assess the chemical composition of the complete wall without extensive degradation. We demonstrate how multivariate analysis of such spectra can be used to visualize cell wall changes between sample types as high-resolution 2D NMR loading spectra. Changes in composition and structure for both lignin and polysaccharides can subsequently be interpreted on a molecular level. The multivariate approach alleviates problems associated with peak picking of overlapping peaks, and it allows the deduction of the relative importance of each peak for sample discrimination. As a first proof of concept, we compare Populus tension wood to normal wood. All well established differences in cellulose, hemicellulose, and lignin compositions between these wood types were readily detected, confirming the reliability of the multivariate approach. In a second example, wood from transgenic Populus modified in their degree of pectin methylesterification was compared to that of wild-type trees. We show that differences in both lignin and polysaccharide composition that are difficult to detect with traditional spectral analysis and that could not be a priori predicted were revealed by the multivariate approach. 2D NMR of dissolved cell wall samples combined with multivariate analysis constitutes a novel approach in cell wall analysis and provides a new tool that will benefit cell wall research.
C1 [Hedenstrom, Mattias; Wiklund-Lindstrom, Susanne; Oman, Tommy] Umea Univ, Dept Chem, SE-90187 Umea, Sweden.
[Lu, Fachuang; Ralph, John] Univ Wisconsin, Dept Biochem, Madison, WI 53706 USA.
[Gerber, Lorenz; Sundberg, Bjorn] Swedish Univ Agr Sci, Dept Forest Genet & Plant Physiol, Umea Plant Sci Ctr, SE-90183 Umea, Sweden.
[Schatz, Paul; Ralph, John] Univ Wisconsin, USDA ARS, US Dairy Forage Res Ctr, Madison, WI 53706 USA.
[Lu, Fachuang; Ralph, John] Univ Wisconsin, Great Lakes Bioenergy Res Ctr, Madison, WI 53706 USA.
RP Hedenstrom, M (reprint author), Umea Univ, Dept Chem, SE-90187 Umea, Sweden.
EM mattias.hedenstrom@chem.umu.se
FU Funcfiber; FORMAS center for excellence in wood science; EU [028974];
Office of Science (BER); US Dept. of Energy [DE-AI02-06ER64299]; DOE
Great Lakes Bioenergy Research Center; US Department of Energy, Office
of Science, Office of Biological and Environmental Research
[DE-FC02-07ER64494]
FX This work was supported by Funcfiber, a FORMAS center for excellence in
wood science, EU grant (028974) (CASPIC) and the Swedish energy agency.
The US group was supported by the Office of Science (BER), US Dept. of
Energy, Interagency agreement No. DE-AI02-06ER64299, and was also funded
in part by the DOE Great Lakes Bioenergy Research Center
(www.greatlakesbioenergy.org), which is supported by the US Department
of Energy, Office of Science, Office of Biological and Environmental
Research, through Cooperative Agreement DE-FC02-07ER64494 between The
Board of Regents of the University of Wisconsin System and the US
Department of Energy.
NR 38
TC 53
Z9 53
U1 6
U2 44
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 1674-2052
J9 MOL PLANT
JI Mol. Plant.
PD SEP
PY 2009
VL 2
IS 5
BP 933
EP 942
DI 10.1093/mp/ssp047
PG 10
WC Biochemistry & Molecular Biology; Plant Sciences
SC Biochemistry & Molecular Biology; Plant Sciences
GA 499KL
UT WOS:000270218900011
PM 19825670
ER
PT J
AU Kalinin, SV
Setter, N
Kholkin, AL
AF Kalinin, Sergei V.
Setter, Nava
Kholkin, Andrei L.
TI Electromechanics on the Nanometer Scale: Emerging Phenomena, Devices,
and Applications
SO MRS BULLETIN
LA English
DT Article
ID SCANNING PROBE MICROSCOPY; THIN-FILMS; NANOSCALE; INTERFEROMETER;
FERROELECTRICS; DOMAIN
AB Coupling between mechanical and electrical phenomena is ubiquitous at the nano-and molecular scales, with examples ranging from piezoelectricity and flexoelectricity in perovskites to complex molecular transformations in redox active molecules and ion channels. This article delineates the field of nanoelectromechanics enabled by recent advances in scanning probe, indentation, and interferometric techniques and provides a unified outlook at a number of related topics, including membrane and surface flexoelectricity, local piezoelectricity in ferroelectrics and associated devices, and electromechanical molecular machines. It also summarizes experimental and theoretical challenges on the pathway to visualize, control, and manipulate electromechanical activity on the nanoscale and molecular levels.
C1 [Kalinin, Sergei V.] Oak Ridge Natl Lab, Oak Ridge, TN 37922 USA.
[Setter, Nava] Swiss Fed Inst Technol, Zurich, Switzerland.
[Kholkin, Andrei L.] Univ Aveiro, Aveiro, Portugal.
RP Kalinin, SV (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37922 USA.
EM sergei2@ornl.gov; nava.setter@epfl.ch; Kholkin@ua.pt
RI Kholkin, Andrei/G-5834-2010; Kalinin, Sergei/I-9096-2012
OI Kholkin, Andrei/0000-0003-3432-7610; Kalinin, Sergei/0000-0001-5354-6152
FU division of Scientific User Facilities; DOE BES; Fundacao para a Ciencia
e a Tecnologia (Portugal) [PTDC/FIS/81442/2006, PTDC/CTM/73030/2006]
FX SVK acknowledges support from the division of Scientific User
Facilities, DOE BES. AK is grateful to the Fundacao para a Ciencia e a
Tecnologia (Portugal) for the financial support within national projects
PTDC/FIS/81442/2006 and PTDC/CTM/73030/2006.
NR 33
TC 25
Z9 25
U1 0
U2 18
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0883-7694
EI 1938-1425
J9 MRS BULL
JI MRS Bull.
PD SEP
PY 2009
VL 34
IS 9
BP 634
EP 642
DI 10.1557/mrs2009.174
PG 9
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA 493WA
UT WOS:000269768100014
ER
PT J
AU Tagantsev, AK
Meunier, V
Sharma, P
AF Tagantsev, Alexander K.
Meunier, Vincent
Sharma, Pradeep
TI Novel Electromechanical Phenomena at the Nanoscale: Phenomenological
Theory and Atomistic Modeling
SO MRS BULLETIN
LA English
DT Article
ID POLARIZATION; FLEXOELECTRICITY; DIELECTRICS; FILMS
AB In the past two decades, the fact that "small is different" has been established for a wide variety of phenomena, including electrical, optical, magnetic, and mechanical behavior of materials. However, one largely untapped but potentially very important area of nanoscience involves the interplay of electricity and mechanics at the nanoscale. In this article, predicated on both phenomenological approaches and atomistic calculations, we summarize the state-of-the-art in understanding electromechanical coupling at the nanoscale. First, we address flexoelectricity-the coupling of strain gradient to polarization. Flexoelectricity exists in both piezoelectric and non piezoelectric dielectrics. As a high-order spatial-dispersion effect, the flexoelectricity becomes more and more important with the reduction of the spatial scale of the problem. Exploitation of this phenomenon and the associated nanoscale size effects can lead to tantalizing applications, such as "piezoelectric nanocomposites without using piezoelectric materials." The second issue concerns electromechanical effects at the dielectric/metal interface. An interface in solids typically exhibits a lower symmetry compared to that of the associated adhering materials. This symmetry reduction can drastically affect the electromechanical and dielectric behavior of the material at the nanoscale.
C1 [Tagantsev, Alexander K.] Swiss Fed Inst Technol, Zurich, Switzerland.
[Meunier, Vincent] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Sharma, Pradeep] Univ Houston, Houston, TX 77204 USA.
RP Tagantsev, AK (reprint author), Swiss Fed Inst Technol, Zurich, Switzerland.
EM alexander.tagantsev@epfl.ch; meunierv@ornl.gov; psharma@uh.edu
RI Tagantsev, Alexander/E-3707-2010; Meunier, Vincent/F-9391-2010; Sharma,
Pradeep/D-4123-2012
OI Meunier, Vincent/0000-0002-7013-179X;
FU National Science Foundation [CMMI 0708096, CMMI 0826153]; Swiss National
Science Foundation; Oak Ridge National Laboratory; U.S. Department of
Energy [De-AC05-00OR22725]
FX Sharma would like to acknowledge fruitful collaborations with his
students, Mohamed Sabri Majdoub, Nikhil Sharma, and Ravi Maranganti and
Professors Tahir Cagin and Chad Landis. Funding support from the
National Science Foundation: Clark Cooper (CMMI 0708096) and Ken Chong
(CMMI 0826153) is gratefully acknowledged. Tagantsev acknowledges
financial support by the Swiss National Science Foundation. Meunier was
sponsored by the Laboratory Directed Research and Development Program of
Oak Ridge National Laboratory, managed by UT-Battelle, LLC for the U.S.
Department of Energy under Contract No. De-AC05-00OR22725.
NR 37
TC 44
Z9 44
U1 2
U2 27
PU MATERIALS RESEARCH SOC
PI WARRENDALE
PA 506 KEYSTONE DR, WARRENDALE, PA 15086 USA
SN 0883-7694
J9 MRS BULL
JI MRS Bull.
PD SEP
PY 2009
VL 34
IS 9
BP 643
EP 647
DI 10.1557/mrs2009.175
PG 5
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA 493WA
UT WOS:000269768100015
ER
PT J
AU Bonnell, DA
Kalinin, SV
Kholkin, AL
Gruverman, A
AF Bonnell, D. A.
Kalinin, S. V.
Kholkin, A. L.
Gruverman, A.
TI Piezoresponse Force Microscopy: A Window into Electromechanical Behavior
at the Nanoscale
SO MRS BULLETIN
LA English
DT Article
ID SCANNING PROBE MICROSCOPY; NONLINEAR DIELECTRIC MICROSCOPY;
FERROELECTRIC DATA-STORAGE; THIN-FILMS; SINGLE-CRYSTALS; ULTRAHIGH
DENSITY; LOCAL REACTIVITY; POLARIZATION; SURFACES; NANOSTRUCTURES
AB Piezoresponse force microscopy (PFM) is a powerful method widely used for nanoscale studies of the electromechanical coupling effect in various materials systems. Here, we review recent progress in this field that demonstrates great potential of PFM for the investigation of static and dynamic properties of ferroelectric domains, nanofabrication and lithography, local functional control, and structural imaging in a variety of inorganic and organic materials, including piezoelectrics, semiconductors, polymers, biomolecules, and biological systems. Future pathways for PFM application in high-density data storage, nanofabrication, and spectroscopy are discussed.
C1 [Bonnell, D. A.] Univ Penn, Philadelphia, PA 19104 USA.
[Kalinin, S. V.] Oak Ridge Natl Lab, Oak Ridge, TN 37922 USA.
[Kholkin, A. L.] Univ Aveiro, Aveiro, Portugal.
[Gruverman, A.] Univ Nebraska, Lincoln, NE 68588 USA.
RP Bonnell, DA (reprint author), Univ Penn, Philadelphia, PA 19104 USA.
EM Bonnell@seas.upenn.edu; sergei2@ornl.gov; Kholkin@ua.pt;
agruverman2@unlnotes.unl.edu
RI Kholkin, Andrei/G-5834-2010; Kalinin, Sergei/I-9096-2012; Gruverman,
alexei/P-3537-2014
OI Kholkin, Andrei/0000-0003-3432-7610; Kalinin,
Sergei/0000-0001-5354-6152; Gruverman, alexei/0000-0003-0492-2750
FU Scientific User Facilities; DOE; BES; Fundacao para a Ciencia e a
Technologia [PTDC/FIS/81442/2006, PTDC/CTM 73030/2006]
FX SVK acknowledges support from the division of Scientific User
Facilities, DOE, BES. ALK is grateful to the Fundacao para a Ciencia e a
Technologia (Portugal) for the financial support within national
projects PTDC/FIS/81442/2006 and PTDC/CTM 73030/2006.
NR 85
TC 86
Z9 88
U1 7
U2 70
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0883-7694
EI 1938-1425
J9 MRS BULL
JI MRS Bull.
PD SEP
PY 2009
VL 34
IS 9
BP 648
EP 657
DI 10.1557/mrs2009.176
PG 10
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA 493WA
UT WOS:000269768100016
ER
PT J
AU Cooley, BJ
Clark, TE
Liu, BZ
Eichfeld, CM
Dickey, EC
Mohney, SE
Crooker, SA
Samarth, N
AF Cooley, B. J.
Clark, T. E.
Liu, B. Z.
Eichfeld, C. M.
Dickey, E. C.
Mohney, S. E.
Crooker, S. A.
Samarth, N.
TI Growth of Magneto-optically Active (Zn,Mn)Se Nanowires
SO NANO LETTERS
LA English
DT Article
ID MAGNETIC SEMICONDUCTOR NANOWIRES
AB We describe the growth of Zn(1-x)Mn(x)Se nanowires in ultrahigh vacuum seeded by Au nanodroplets. Electron microscopy reveals the formation of single-crystal c-axis wurtzite nanowires (typically 1-3 mu m long) with Mn concentrations up to x approximate to 0.6, accompanied by a dense horizontal undergrowth of shorter, crooked nanowires. Magnetophotoluminescence measurements show evidence for sp-d exchange effects in a reduced symmetry environment. We find that the optical emission is surprisingly dominated by the undergrowth of crooked nanowires.
C1 [Cooley, B. J.; Clark, T. E.; Liu, B. Z.; Eichfeld, C. M.; Dickey, E. C.; Mohney, S. E.; Samarth, N.] Penn State Univ, Ctr Nanoscale Sci, University Pk, PA 16802 USA.
[Cooley, B. J.; Clark, T. E.; Liu, B. Z.; Eichfeld, C. M.; Dickey, E. C.; Mohney, S. E.; Samarth, N.] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA.
[Crooker, S. A.] Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA.
RP Samarth, N (reprint author), Penn State Univ, Ctr Nanoscale Sci, University Pk, PA 16802 USA.
EM nsamarth@psu.edu
RI Dickey, Elizabeth/A-3368-2011; Samarth, Nitin/C-4475-2014
OI Dickey, Elizabeth/0000-0003-4005-7872; Samarth,
Nitin/0000-0003-2599-346X
FU NSF [DMR-0820404]; DOE; State of Florida
FX This work is supported by the Penn State Center for Nanoscale Science
(funded by NSF under Grant No. DMR-0820404). This work was performed in
part at the Penn State Nanofabrication Facility, a member of the NSF
National Nanofabrication Users Network. Work at the National High
Magnetic Field Laboratory is supported by NSF, DOE, and the State of
Florida. The authors acknowledge the contributions of Tina Lin during
the early stages of this project.
NR 13
TC 10
Z9 10
U1 0
U2 14
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
J9 NANO LETT
JI Nano Lett.
PD SEP
PY 2009
VL 9
IS 9
BP 3142
EP 3146
DI 10.1021/nl901272q
PG 5
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA 492KQ
UT WOS:000269654900010
PM 19736970
ER
PT J
AU Teng, XW
Feygenson, M
Wang, Q
He, JQ
Du, WX
Frenkel, AI
Han, WQ
Aronson, M
AF Teng, Xiaowei
Feygenson, Mikhail
Wang, Qi
He, Jiaqing
Du, Wenxin
Frenkel, Anatoly I.
Han, Weiqiang
Aronson, Meigan
TI Electronic and Magnetic Properties of Ultrathin Au/Pt Nanowires
SO NANO LETTERS
LA English
DT Article
ID SHAPE-CONTROLLED SYNTHESIS; CHEMICAL-SYNTHESIS; METAL NANOPARTICLES;
PLATINUM NANOWIRES; POLYOL PROCESS; ASPECT RATIO; NANOSTRUCTURES;
FERROMAGNETISM; NANOCRYSTALS; NANORODS
AB We have reported the synthesis of Au25Pt75 and Au48Pt52 alloyed ultrathin nanowires with average widths of less than 3 nm via a wet chemistry approach at room temperature. Using a combination of techniques, including scanning transmission electron microscopy equipped with X-ray energy dispersive spectroscopy, ultraviolet-visible spectroscopy, and X-ray absorption near-edge structure and extended X-ray absorption fine structure spectroscopies, we identified the stoichiometry-dependent heterogeneous crystalline structures, as well as electronic structures with respect to the charge transfer between Pt and Au within both nanowires. In particular, we observed d-charge depletion at the Au site and the d-charge gain at the Pt site in Au48Pt52 nanowires, which accounted for its ferromagnetic magnetic behavior, in contrast to the paramagnetism and diamagnetism appearing respectively in bulk Pt and Au.
C1 [Teng, Xiaowei; Du, Wenxin] Univ New Hampshire, Dept Chem Engn, Durham, NH 03824 USA.
[Han, Weiqiang] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
[Wang, Qi; Frenkel, Anatoly I.] Yeshiva Univ, Dept Phys, New York, NY 10016 USA.
[He, Jiaqing] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA.
[Aronson, Meigan] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA.
[Feygenson, Mikhail; Aronson, Meigan] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
RP Teng, XW (reprint author), Univ New Hampshire, Dept Chem Engn, Durham, NH 03824 USA.
EM xw.teng@unh.edu
RI He, Jiaqing/A-2245-2010; Frenkel, Anatoly/D-3311-2011; Wang,
Qian/B-7611-2009; Wang, Qi/C-5478-2012; Han, WQ/E-2818-2013; Feygenson,
Mikhail /H-9972-2014; Du, Wenxin/P-9195-2014
OI Frenkel, Anatoly/0000-0002-5451-1207; Feygenson, Mikhail
/0000-0002-0316-3265;
NR 65
TC 55
Z9 55
U1 4
U2 65
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
J9 NANO LETT
JI Nano Lett.
PD SEP
PY 2009
VL 9
IS 9
BP 3177
EP 3184
DI 10.1021/nl9013716
PG 8
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA 492KQ
UT WOS:000269654900016
PM 19645434
ER
PT J
AU Kim, K
Jensen, K
Zettl, A
AF Kim, Kwanpyo
Jensen, K.
Zettl, A.
TI Tuning Nanoelectromechanical Resonators with Mass Migration
SO NANO LETTERS
LA English
DT Article
ID PARAMETRIC RESONANCES; CARBON NANOTUBES; SYSTEM
AB We demonstrate tuning of nanoelectromechanical resonators via mass migration. Indium nanoparticles can be reversibly migrated to different locations along cantilevered multiwalled carbon nanotube resonators using electrical currents as the control parameter. Nonvolatile mass redistributions result in stable resonant frequency shifts as large as 20%. The tuning method is robust and can be utilized for nanoelectromechanical resonators operating at frequencies from audio to microwave.
C1 [Zettl, A.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Ctr Integrated Nanomech Syst, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Sci Mat, Berkeley, CA 94720 USA.
RP Zettl, A (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM azettl@berkeley.edu
RI Kim, Kwanpyo/D-9121-2011; Zettl, Alex/O-4925-2016
OI Kim, Kwanpyo/0000-0001-8497-2330; Zettl, Alex/0000-0001-6330-136X
FU U.S. Department of Energy [DE-AC02-05CH11231]; National Science
Foundation [EEC-0425941]; Samsung Scholarship
FX We thank B. Aleman for TEM assistance, and J. Weldon and W. Gannett for
helpful discussions. This research was supported in part by the
Director, Office of Energy Research, Office of Basic Energy Sciences,
Materials Sciences and Engineering Division, of the U.S. Department of
Energy under contract DE-AC02-05CH11231, which provided for design,
fabrication, and characterization of the tunable resonator, and by the
National Science Foundation within the Center of Integrated
Nanomechanical Systems, under Grant EEC-0425941, which provided for
theoretical analysis. K.K. acknowledges support from a Samsung
Scholarship.
NR 27
TC 29
Z9 29
U1 1
U2 13
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
J9 NANO LETT
JI Nano Lett.
PD SEP
PY 2009
VL 9
IS 9
BP 3209
EP 3213
DI 10.1021/nl901449w
PG 5
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA 492KQ
UT WOS:000269654900021
PM 19645422
ER
PT J
AU Phoa, K
Neaton, JB
Subramanian, V
AF Phoa, Kinyip
Neaton, J. B.
Subramanian, Vivek
TI First-Principles Studies of the Dynamics of [2]Rotaxane Molecular
Switches
SO NANO LETTERS
LA English
DT Article
ID TOTAL-ENERGY CALCULATIONS; WAVE BASIS-SET; ELECTRONIC DEVICES;
MONOLAYERS; MECHANISM; MODEL
AB Realization of controlled binary switching in individual molecules is of fundamental importance for nanoscale electronics where the use of molecular components promises the flexibility of engineering performance through controlled organic synthesis. The active component of the [2]rotaxane molecule consists of a cyclobis-(paraquat-p-phenylene) ring-shaped structure [(CBPQTI(4+))(PF(6)(-))(4)], proposed to switch between two stations, tetrathiafulvalene (TTF) and 1,5-dioxynapthalene (DNP), that lie along a common molecular backbone. However, there are still several open questions regarding their operation and performance, particularly in a device geometry. In this work, the switching speed of crossbar array devices based on [2]rotaxane arrays is studied with first principles density functional theory (DFT). The energetics of a likely configurational pathway for the CBPQT-ring shuttling along the molecular backbone between stations is computed and analyzed, as are ionization potentials and electrostatic screening properties. From these quantities, a new switching mechanism is identified. The applied bias at the cathode alters the energy landscape, making the OFF-state configuration energetically unfavorable relative to the ON-state without involving charging, as previously suggested.(1) For a crossbar memory array of reasonable size, the calculations predict that the switching speed is dominated by the shuttling time of the CBPQT-ring, which is estimated to be a few microseconds. The applicability of this technology is discussed in light of this result.
C1 [Phoa, Kinyip; Subramanian, Vivek] Univ Calif Berkeley, Dept Elect Engn & Comp Sci, Berkeley, CA 94720 USA.
[Neaton, J. B.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Subramanian, V (reprint author), Univ Calif Berkeley, Dept Elect Engn & Comp Sci, Berkeley, CA 94720 USA.
EM viveks@eecs.berkeley.edu
RI Neaton, Jeffrey/F-8578-2015; Subramanian, Vivek/K-9818-2016
OI Neaton, Jeffrey/0000-0001-7585-6135; Subramanian,
Vivek/0000-0002-1783-8219
FU U.S. Department of Energy [DE-AC02-05CH11231]; NERSC
FX This work was funded by the Materials, Structures, and Devices Focus
Center under the auspices of the Focus Center Research Program. Work at
the Molecular Foundry was supported by the Office of Science, Office of
Basic Energy Sciences, of the U.S. Department of Energy under Contract
No. DE-AC02-05CH11231. We also acknowledge NERSC for providing
computational support.
NR 18
TC 12
Z9 12
U1 0
U2 16
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
J9 NANO LETT
JI Nano Lett.
PD SEP
PY 2009
VL 9
IS 9
BP 3225
EP 3229
DI 10.1021/nl901478a
PG 5
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA 492KQ
UT WOS:000269654900024
PM 19705804
ER
PT J
AU Rozhkova, EA
Ulasov, I
Lai, B
Dimitrijevic, NM
Lesniak, MS
Rajh, T
AF Rozhkova, Elena A.
Ulasov, Ilya
Lai, Barry
Dimitrijevic, Nada M.
Lesniak, Maciej S.
Rajh, Tijana
TI A High-Performance Nanobio Photocatalyst for Targeted Brain Cancer
Therapy
SO NANO LETTERS
LA English
DT Article
ID RECEPTOR ALPHA-2 CHAIN; TITANIUM-DIOXIDE; TIO2 NANOPARTICLES;
CHARGE-TRANSFER; SINGLET OXYGEN; T24 CELL; INTERLEUKIN-13; GENERATION;
INDUCTION; INTERNALIZATION
AB We report pronounced and specific antiglioblastoma cell phototoxicity of 5 nm TiO(2) particles covalently tethered to an antibody via a dihydroxybenzene bivalent linker. The linker application enables absorption of a visible part of the solar spectrum by the nanobio hybrid. The phototoxicity is mediated by reactive oxygen species (ROS) that initiate programmed death of the cancer cell. Synchrotron X-ray fluorescence microscopy (XFM) was applied for direct visualization of the nanobioconjugate distribution through a single brain cancer cell at the submicrometer scale.
C1 [Rozhkova, Elena A.; Dimitrijevic, Nada M.; Rajh, Tijana] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
[Ulasov, Ilya; Lesniak, Maciej S.] Univ Chicago, Univ Chicago Brain Tumor Ctr, Chicago, IL 60637 USA.
[Lai, Barry] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Dimitrijevic, Nada M.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
RP Rozhkova, EA (reprint author), Argonne Natl Lab, Ctr Nanoscale Mat, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM rozhkova@anl.gov
FU U.S. Department of Energy, Office of Basic Energy Sciences
[DE-AC02-06CH11357]; National Cancer Institute [R01-CA1 22930,
R21-CA135728 MSL]; National Institute of Neurological Disorders and
Stroke [K08-NS046430]; Alliance for Cancer Gene Therapy Young
Investigator Award; American Cancer Society [RSG-07-276-01-MGO]; Brain
Research Foundation [FAS 6-33186]
FX The work was performed under the auspices of the U.S. Department of
Energy, Office of Basic Energy Sciences, under Contract No.
DE-AC02-06CH11357. Support by the National Cancer Institute (R01-CA1
22930, R21-CA135728 MSL), the National Institute of Neurological
Disorders and Stroke (K08-NS046430, MSL), the Alliance for Cancer Gene
Therapy Young Investigator Award (M.S.L.), the American Cancer Society
(RSG-07-276-01-MGO, M.S.L.), and the Brain Research Foundation (Award
FAS # 6-33186 to E.A.R.) is gratefully acknowledged. The authors thank
Dr. L. Finney (APS, ANL), Dr. S. Vogt (APS, ANQ, and Dr. J. Maser (CNM,
ANL) for valuable discussions and technical advising in XFM samples
preparation, Dr. D.-H. Kim (Material Science Division, ANL) for
assistance with FT-TR spectroscopy, Dr. V. Novosad (MSD, ANL) for AFM
imaging, and G. Ms. Shustakova (MSD, ANQ for assistance with infrared
camera thermal imaging. We thank Dr. A. Datesman for reading the
manuscript.
NR 53
TC 140
Z9 142
U1 3
U2 80
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
J9 NANO LETT
JI Nano Lett.
PD SEP
PY 2009
VL 9
IS 9
BP 3337
EP 3342
DI 10.1021/nl901610f
PG 6
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA 492KQ
UT WOS:000269654900043
PM 19640002
ER
PT J
AU Lee, Z
Jeon, KJ
Dato, A
Erni, R
Richardson, TJ
Frenklach, M
Radmilovic, V
AF Lee, Zonghoon
Jeon, Ki-Joon
Dato, Albert
Erni, Rolf
Richardson, Thomas J.
Frenklach, Michael
Radmilovic, Velimir
TI Direct Imaging of Soft-Hard Interfaces Enabled by Graphene
SO NANO LETTERS
LA English
DT Article
ID GOLD NANOPARTICLES; SHEETS; SURFACE
AB Direct imaging of surface molecules and the interfaces between soft and hard materials on functionalized nanoparticles is a great challenge using modern microscopy techniques. We show that graphene, a single atomic layer of sp(2)-bonded carbon atoms, can be employed as an ultrathin support film that enables direct imaging of molecular layers and interfaces in both conventional and atomic-resolution transmission electron microscopy. An atomic-resolution imaging study of the capping layers and interfaces of citrate-stabilized gold nanoparticles is used to demonstrate this novel capability. Our findings reveal the unique potential of graphene as an ideal support film for atomic-resolution transmission electron microscopy of hard and soft nanomaterials.
C1 [Lee, Zonghoon; Erni, Rolf; Radmilovic, Velimir] Univ Calif Berkeley, Lawrence Berkeley Lab, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA.
[Jeon, Ki-Joon; Richardson, Thomas J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA.
[Dato, Albert] Univ Calif Berkeley, Appl Sci & Technol Grad Grp, Berkeley, CA 94720 USA.
[Frenklach, Michael] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA.
RP Lee, Z (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA.
EM zhlee@lbl.gov; kjjeon@lbl.gov; amdato@newton.berkeley.edu
RI Lee, Zonghoon/G-1474-2011; Erni, Rolf/P-7435-2014
OI Lee, Zonghoon/0000-0003-3246-4072; Erni, Rolf/0000-0003-2391-5943
FU National Aeronautics and Space Administration; National Center for
Electron Microscopy, Lawrence Berkeley Lab; U.S. Department of Energy
[DE-AC02-05CH11231]
FX This work was supported by the National Aeronautics and Space
Administration and the National Center for Electron Microscopy, Lawrence
Berkeley Lab, which is supported by the U.S. Department of Energy under
Contract No. DE-AC02-05CH11231
NR 19
TC 78
Z9 80
U1 5
U2 49
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
EI 1530-6992
J9 NANO LETT
JI Nano Lett.
PD SEP
PY 2009
VL 9
IS 9
BP 3365
EP 3369
DI 10.1021/nl901664k
PG 5
WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &
Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied;
Physics, Condensed Matter
SC Chemistry; Science & Technology - Other Topics; Materials Science;
Physics
GA 492KQ
UT WOS:000269654900048
PM 19591495
ER
PT J
AU Strmcnik, D
Kodama, K
van der Vliet, D
Greeley, J
Stamenkovic, VR
Markovic, NM
AF Strmcnik, D.
Kodama, K.
van der Vliet, D.
Greeley, J.
Stamenkovic, V. R.
Markovic, N. M.
TI The role of non-covalent interactions in electrocatalytic fuel-cell
reactions on platinum
SO NATURE CHEMISTRY
LA English
DT Article
ID SINGLE-CRYSTAL SURFACES; ALKALI-METAL CATIONS; SULFURIC-ACID-SOLUTION;
AB-INITIO CALCULATIONS; OXYGEN REDUCTION; DOUBLE-LAYER; HYDROGEN
ELECTROCHEMISTRY; INFRARED-SPECTROSCOPY; CLUSTER IONS; ADSORPTION
AB The classic models of metal electrode-electrolyte interfaces generally focus on either covalent interactions between adsorbates and solid surfaces or on long-range electrolyte-metal electrostatic interactions. Here we demonstrate that these traditional models are insufficient. To understand electrocatalytic trends in the oxygen reduction reaction (ORR), the hydrogen oxidation reaction (HOR) and the oxidation of methanol on platinum surfaces in alkaline electrolytes, non-covalent interactions must be considered. We find that non-covalent interactions between hydrated alkali metal cations M(+)(H(2)O)(x) and adsorbed OH (OH(ad)) species increase in the same order as the hydration energies of the corresponding cations (Li(+) >> Na(+) > K(+) > Cs(+)) and also correspond to an increase in the concentration of OH(ad)-M(+)(H(2)O)(x) clusters at the interface. These trends are inversely proportional to the activities of the ORR, the HOR and the oxidation of methanol on platinum (Cs(+) > K(+) > Na(+) >> Li(+)), which suggests that the clusters block the platinum active sites for electrocatalytic reactions.
C1 [Strmcnik, D.; Kodama, K.; van der Vliet, D.; Stamenkovic, V. R.; Markovic, N. M.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Greeley, J.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
[Kodama, K.] Toyota Cent Res & Dev Labs Inc, Toyota 4801192, Japan.
RP Strmcnik, D (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM nmmarkovic@anl.gov
FU University of Chicago and Argonne; US Department of Energy; Toyota
Central RD Labs
FX This work, including use of the Center for Nanoscale Materials, was
supported by the University of Chicago and Argonne, and the US
Department of Energy, Office of Science, Office of Basic Energy
Sciences. We acknowledge computer time at the Laboratory Computing
Resource Center at Argonne National Laboratory, the National Energy
Research Scientific Computing Center and the Molecular Science Computing
Facility at Pacific Northwest National Laboratory. K. K. acknowledges
financial support from Toyota Central R&D Labs.
NR 46
TC 159
Z9 159
U1 34
U2 184
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1755-4330
J9 NAT CHEM
JI Nat. Chem.
PD SEP
PY 2009
VL 1
IS 6
BP 466
EP 472
DI 10.1038/NCHEM.330
PG 7
WC Chemistry, Multidisciplinary
SC Chemistry
GA 486RK
UT WOS:000269215100013
PM 21378914
ER
PT J
AU Kauffman, DR
Shade, CM
Uh, H
Petoud, S
Star, A
AF Kauffman, Douglas R.
Shade, Chad M.
Uh, Hyounsoo
Petoud, Stephane
Star, Alexander
TI Decorated carbon nanotubes with unique oxygen sensitivity
SO NATURE CHEMISTRY
LA English
DT Article
ID CHEMICAL SENSORS; CHARGE-TRANSFER; ELECTRONIC-PROPERTIES; MEMORY
DEVICES; TRANSISTORS; SEMICONDUCTORS; TRANSPARENT; INTERFACES;
MECHANISM; NETWORKS
AB The relatively simple and robust architecture of microelectronic devices based on carbon nanotubes, in conjunction with their environmental sensitivity, places them among the leading candidates for incorporation into ultraportable or wearable chemical analysis platforms. We used single-walled carbon nanotube (SWNT) networks to establish a mechanistic understanding of the solid-state oxygen sensitivity of a Eu(3+)-containing dendrimer complex. After illumination with 365 nm light, the SWNT networks decorated with the Eu(3+) dendrimer show bimodal (optical spectroscopic and electrical conductance) sensitivity towards oxygen gas at room temperature under ambient pressure. We investigated the mechanism of this unique oxygen sensitivity with time-resolved and steady-state optical spectroscopy, analysis of excited-state luminescence lifetimes and solid-state electrical transport measurements. We demonstrate a potential application of this system by showing a reversible and linear electrical response to oxygen gas in the tested range (5-27%).
C1 [Kauffman, Douglas R.; Shade, Chad M.; Uh, Hyounsoo; Petoud, Stephane; Star, Alexander] Univ Pittsburgh, Dept Chem, Pittsburgh, PA 15260 USA.
[Kauffman, Douglas R.; Star, Alexander] Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
RP Kauffman, DR (reprint author), Univ Pittsburgh, Dept Chem, Pittsburgh, PA 15260 USA.
EM spetoud@pitt.edu; astar@pitt.edu
RI Star, Alexander/C-3399-2013; Petoud, Stephane/D-2022-2012; Petoud,
Stephane/L-6973-2015;
OI Petoud, Stephane/0000-0001-5232-6537; Kauffman,
Douglas/0000-0002-7855-3428
FU National Energy Technology Laboratory under RDS [DE-AC26-04NT41817];
National Science Foundation [DBI-0352346]
FX The authors thank D. H. Waldeck for his comments, and acknowledge the
facilities, scientific and technical assistance of the Materials
Micro-Characterization Laboratory of the Department of Mechanical
Engineering and Materials Science, Swanson School of Engineering,
University of Pittsburgh. This work was performed in support of ongoing
research in sensor systems and diagnostics at the National Energy
Technology Laboratory under RDS contract DE-AC26-04NT41817. This work
was partially supported through the National Science Foundation (Grant
DBI-0352346).
NR 51
TC 31
Z9 31
U1 5
U2 41
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1755-4330
J9 NAT CHEM
JI Nat. Chem.
PD SEP
PY 2009
VL 1
IS 6
BP 500
EP 506
DI 10.1038/NCHEM.323
PG 7
WC Chemistry, Multidisciplinary
SC Chemistry
GA 486RK
UT WOS:000269215100018
PM 21378918
ER
PT J
AU Cordeddu, V
Di Schiavi, E
Pennacchio, LA
Ma'ayan, A
Sarkozy, A
Fodale, V
Cecchetti, S
Cardinale, A
Martin, J
Schackwitz, W
Lipzen, A
Zampino, G
Mazzanti, L
Digilio, MC
Martinelli, S
Flex, E
Lepri, F
Bartholdi, D
Kutsche, K
Ferrero, GB
Anichini, C
Selicorni, A
Rossi, C
Tenconi, R
Zenker, M
Merlo, D
Dallapiccola, B
Iyengar, R
Bazzicalupo, P
Gelb, BD
Tartaglia, M
AF Cordeddu, Viviana
Di Schiavi, Elia
Pennacchio, Len A.
Ma'ayan, Avi
Sarkozy, Anna
Fodale, Valentina
Cecchetti, Serena
Cardinale, Alessio
Martin, Joel
Schackwitz, Wendy
Lipzen, Anna
Zampino, Giuseppe
Mazzanti, Laura
Digilio, Maria C.
Martinelli, Simone
Flex, Elisabetta
Lepri, Francesca
Bartholdi, Deborah
Kutsche, Kerstin
Ferrero, Giovanni B.
Anichini, Cecilia
Selicorni, Angelo
Rossi, Cesare
Tenconi, Romano
Zenker, Martin
Merlo, Daniela
Dallapiccola, Bruno
Iyengar, Ravi
Bazzicalupo, Paolo
Gelb, Bruce D.
Tartaglia, Marco
TI Mutation of SHOC2 promotes aberrant protein N-myristoylation and causes
Noonan-like syndrome with loose anagen hair
SO NATURE GENETICS
LA English
DT Article
ID INTERACTION DATABASE; C-ELEGANS; RAS; PTPN11; PHOSPHATASE; NETWORK;
SUR-8
AB N-myristoylation is a common form of co-translational protein fatty acylation resulting from the attachment of myristate to a required N-terminal glycine residue(1,2). We show that aberrantly acquired N-myristoylation of SHOC2, a leucine-rich repeat-containing protein that positively modulates RAS-MAPK signal flow(3-6), underlies a clinically distinctive condition of the neuro-cardio-facial-cutaneous disorders family. Twenty-five subjects with a relatively consistent phenotype previously termed Noonan-like syndrome with loose anagen hair (MIM607721)(7) shared the 4A>G missense change in SHOC2 (producing an S2G amino acid substitution) that introduces an N-myristoylation site, resulting in aberrant targeting of SHOC2 to the plasma membrane and impaired translocation to the nucleus upon growth factor stimulation. Expression of SHOC2(S2G) in vitro enhanced MAPK activation in a cell typespecific fashion. Induction of SHOC2(S2G) in Caenorhabditis elegans engendered protruding vulva, a neomorphic phenotype previously associated with aberrant signaling. These results document the first example of an acquired N-terminal lipid modification of a protein causing human disease.
C1 [Cordeddu, Viviana; Fodale, Valentina; Martinelli, Simone; Flex, Elisabetta; Tartaglia, Marco] Ist Super Sanita, Dipartimento Ematol Oncol & Med Mol, I-00161 Rome, Italy.
[Di Schiavi, Elia; Bazzicalupo, Paolo] CNR, Ist Genet & Biofis A Buzzati Traverso, Naples, Italy.
[Pennacchio, Len A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Genom Div, Berkeley, CA 94720 USA.
[Pennacchio, Len A.; Martin, Joel; Schackwitz, Wendy; Lipzen, Anna] US DOE, Joint Genome Inst, Walnut Creek, CA USA.
[Ma'ayan, Avi; Iyengar, Ravi] Mt Sinai Sch Med, Dept Pharmacol & Syst Therapeut, SBCNY, New York, NY USA.
[Sarkozy, Anna; Lepri, Francesca; Dallapiccola, Bruno] San Giovanni Rotondo & Ist Mendel, Ist Ricovero & Cura Carattere Sci Casa Sollievo S, Rome, Italy.
[Fodale, Valentina; Dallapiccola, Bruno] Univ Roma La Sapienza, Dept Expt Med, Rome, Italy.
[Cecchetti, Serena; Merlo, Daniela] Ist Super Sanita, Dipartimento Biol Cellulare & Neurosci, I-00161 Rome, Italy.
[Cardinale, Alessio; Merlo, Daniela] IRCCS San Raffaele Pisana, Rome, Italy.
[Zampino, Giuseppe] Univ Cattolica Sacro Cuore, Ist Clin Pediat, Rome, Italy.
[Mazzanti, Laura] Univ Bologna, Dipartimento Pediat, Bologna, Italy.
[Digilio, Maria C.] Bambino Gesu Pediat Hosp, Sez Genet Med, Rome, Italy.
[Bartholdi, Deborah] Univ Zurich, Inst Med Genet, CH-8603 Schwerzenbach, Switzerland.
[Kutsche, Kerstin] Univ Klinikum Hamburg Eppendorf, Inst Humangenet, Hamburg, Germany.
[Ferrero, Giovanni B.] Univ Turin, Dipartimento Pediat, Turin, Italy.
[Anichini, Cecilia] Univ Siena, Dipartimento Pediat Ostetr & Med Riproduz, I-53100 Siena, Italy.
[Selicorni, Angelo] Fdn Policlin Milano, IRCCS, Clin Pediat 1, Milan, Italy.
[Rossi, Cesare] St Orsola Marcello Malpighi Hosp, Unita Operat Genet Med, Bologna, Italy.
[Tenconi, Romano] Univ Padua, Dipartimento Pediat, I-35128 Padua, Italy.
[Zenker, Martin] Univ Erlangen Nurnberg, Inst Human Genet, Univ Hosp Erlangen, D-8520 Erlangen, Germany.
[Gelb, Bruce D.] Mt Sinai Sch Med, Ctr Mol Cardiol, New York, NY USA.
[Gelb, Bruce D.] Mt Sinai Sch Med, Dept Pediat, New York, NY USA.
[Gelb, Bruce D.] Mt Sinai Sch Med, Dept Genet, New York, NY USA.
[Gelb, Bruce D.] Mt Sinai Sch Med, Dept Genom Sci, New York, NY USA.
RP Tartaglia, M (reprint author), Ist Super Sanita, Dipartimento Ematol Oncol & Med Mol, Viale Regina Elena 299, I-00161 Rome, Italy.
EM bruce.gelb@mssm.edu; mtartaglia@iss.it
RI Di Schiavi, Elia/B-8046-2015; Cecchetti, Serena/N-1061-2015;
Dallapiccola, Bruno/K-8692-2016;
OI Di Schiavi, Elia/0000-0002-8179-6666; Lepri, Francesca
Romana/0000-0001-5331-0473; Dallapiccola, Bruno/0000-0002-5031-1013;
Tartaglia, Marco/0000-0001-7736-9672
FU TelethonItaly [GGP07115]; Convenzione Italia- USA; NIH [HL71207,
HD01294, HL074728]; SBCNY [P50GM071558]; German Research Foundation (
DFG) [ZE 524/ 4- 1]; IRCCS- CSS
FX We are indebted to the affected individuals and families who
participated in the study, the physicians who referred the subjects, A.
Fire ( Stanford University School of Medicine, Stanford, California) and
J. D. McGhee ( University of Calgary, Calgary, Canada) for plasmids, and
C. Ramoni, S. Venanzi and T. Squatriti ( Istituto Superiore di Sanita`,
Rome, Italy) and the Open Laboratory ( IGB- CNR, Naples, Italy) for
experimental support. Some nematode strains used in this work were
provided by the Caenorhabditis Genetics Center ( University of
Minnesota, Minneapolis, Minnesota), funded by the US National Institutes
of Health ( NIH) National Center for Research Resources. We also thank
M. C. Silengo ( Universita` di Torino, Turin, Italy), S. Spranger (
Praxis fuer Humangenetik, Bremen, Germany), I. M. Gaspar ( Egas Moniz
Hospital, Lisbon, Portugal) and D. R. Bertola ( HC/ FMUSP, Sa ~ o Paulo,
Brazil) for their contribution in DNA sampling and valuable clinical
assistance. This research was funded by grants from TelethonItaly (
GGP07115) and ` Convenzione Italia- USA- malattie rare' to M. T., the
NIH ( HL71207, HD01294 and HL074728) to B. D. G., SBCNY ( P50GM071558)
to A. M. and R. I. the German Research Foundation ( DFG) ( ZE 524/ 4- 1)
to M. Z. and IRCCS- CSS ( Ricerca Corrente 2009) to F. L.
NR 36
TC 157
Z9 163
U1 1
U2 18
PU NATURE PUBLISHING GROUP
PI NEW YORK
PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA
SN 1061-4036
J9 NAT GENET
JI Nature Genet.
PD SEP
PY 2009
VL 41
IS 9
BP 1022
EP U95
DI 10.1038/ng.425
PG 7
WC Genetics & Heredity
SC Genetics & Heredity
GA 488WX
UT WOS:000269382100016
PM 19684605
ER
PT J
AU Stephenson, GB
Robert, A
Grubel, G
AF Stephenson, G. Brian
Robert, Aymeric
Gruebel, Gerhard
TI Revealing the atomic dance
SO NATURE MATERIALS
LA English
DT News Item
ID INTENSITY FLUCTUATION SPECTROSCOPY; DYNAMICS; SPECKLE
C1 [Stephenson, G. Brian] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Stephenson, G. Brian] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
[Robert, Aymeric] SLAC Natl Accelerator Lab, LCLS, Menlo Pk, CA 94025 USA.
[Gruebel, Gerhard] HASYLAB DESY, D-22607 Hamburg, Germany.
RP Stephenson, GB (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM stephenson@anl.gov
NR 14
TC 14
Z9 14
U1 0
U2 14
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1476-1122
J9 NAT MATER
JI Nat. Mater.
PD SEP
PY 2009
VL 8
IS 9
BP 702
EP 703
DI 10.1038/nmat2521
PG 3
WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics,
Applied; Physics, Condensed Matter
SC Chemistry; Materials Science; Physics
GA 486RO
UT WOS:000269215500011
PM 19701213
ER
PT J
AU Xu, GY
Gu, GD
Hucker, M
Fauque, B
Perring, TG
Regnault, LP
Tranquada, JM
AF Xu, Guangyong
Gu, G. D.
Huecker, M.
Fauque, B.
Perring, T. G.
Regnault, L. P.
Tranquada, J. M.
TI Testing the itinerancy of spin dynamics in superconducting
Bi2Sr2CaCu2O8+delta
SO NATURE PHYSICS
LA English
DT Article
ID HIGH-TEMPERATURE SUPERCONDUCTOR; NEUTRON-SCATTERING; MAGNETIC
EXCITATIONS; COOPER PAIRS; STATES
AB Much of what we know about the electronic states of high-temperature superconductors is due to photoemission(1-3) and scanning tunnelling spectroscopy(4,5) studies of the compound Bi2Sr2CaCu2O8+delta. The demonstration of well-defined quasi-particles in the superconducting state has encouraged many theorists to apply the conventional theory of metals, Fermi-liquid theory, to the cuprates(6-9). In particular, the spin excitations observed by neutron scattering at energies below twice the superconducting gap energy are commonly believed to correspond to an excitonic state involving itinerant electrons(10-14). Here, we present the first measurements of the magnetic spectral weight of optimally doped Bi2Sr2CaCu2O8+delta in absolute units. The lack of temperature dependence of the local spin susceptibility across the superconducting transition temperature, T-cr is incompatible with the itinerant calculations. Alternatively, the magnetic excitations could be due to local moments, as the magnetic spectrum is similar to that in La1.875Ba0.125CuO4 (ref. 15), where quasiparticles(16) and local moments(17) coexist.
C1 [Xu, Guangyong; Gu, G. D.; Huecker, M.; Tranquada, J. M.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Fauque, B.] CEA Saclay, CEA CNRS, Lab Leon Brillouin, F-91191 Gif Sur Yvette, France.
[Perring, T. G.] STFC Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England.
[Perring, T. G.] UCL, Dept Phys, London WC1E 6BT, England.
[Regnault, L. P.] CEA Grenoble, INAC SPSMS MDN, F-38054 Grenoble 9, France.
RP Tranquada, JM (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
EM jtran@bnl.gov
RI Tranquada, John/A-9832-2009; Xu, Guangyong/A-8707-2010; Gu,
Genda/D-5410-2013
OI Tranquada, John/0000-0003-4984-8857; Xu, Guangyong/0000-0003-1441-8275;
Gu, Genda/0000-0002-9886-3255
FU Office of Science, US Department of Energy [DE-AC02-98CH10886]
FX We gratefully acknowledge assistance from C. Stock, J.S. Wen and Z.J.
Xu, and a critical reading of the manuscript by S. A. Kivelson. This
work was supported by the Office of Science, US Department of Energy
under Contract No. DE-AC02-98CH10886.
NR 30
TC 61
Z9 61
U1 2
U2 14
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1745-2473
J9 NAT PHYS
JI Nat. Phys.
PD SEP
PY 2009
VL 5
IS 9
BP 642
EP 646
DI 10.1038/NPHYS1360
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 497WR
UT WOS:000270095600014
ER
PT J
AU Qazilbash, MM
Hamlin, JJ
Baumbach, RE
Zhang, LJ
Singh, DJ
Maple, MB
Basov, DN
AF Qazilbash, M. M.
Hamlin, J. J.
Baumbach, R. E.
Zhang, Lijun
Singh, D. J.
Maple, M. B.
Basov, D. N.
TI Electronic correlations in the iron pnictides
SO NATURE PHYSICS
LA English
DT Article
ID SUPERCONDUCTORS; CRO2; TRANSPORT; SR2RUO4; SYSTEMS
AB In correlated metals derived from Mott insulators, the motion of an electron is impeded by Coulomb repulsion due to other electrons. This phenomenon causes a substantial reduction in the electron's kinetic energy, leading to remarkable experimental manifestations in optical spectroscopy(1). The high-transition-temperature (T(c)) superconducting cuprates are perhaps the most studied examples of such correlated metals. The occurrence of high-T(c) superconductivity in the iron pnictides(2-4) puts a spotlight on the relevance of correlation effects in these materials(5). Here, we present an infrared and optical study on single crystals of the iron pnictide superconductor LaFePO. We find clear evidence of electronic correlations in metallic LaFePO with the kinetic energy of the electrons reduced to half of that predicted by band theory of nearly free electrons. We deduce that electronic many-body effects are important in the iron pnictides despite the absence of a Mott transition.
C1 [Qazilbash, M. M.; Hamlin, J. J.; Baumbach, R. E.; Maple, M. B.; Basov, D. N.] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA.
[Hamlin, J. J.; Baumbach, R. E.; Maple, M. B.] Univ Calif San Diego, Inst Pure & Appl Phys Sci, La Jolla, CA 92093 USA.
[Zhang, Lijun; Singh, D. J.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Qazilbash, MM (reprint author), Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA.
EM mumtaz@physics.ucsd.edu
RI Zhang, Lijun/F-7710-2011; Baumbach, Ryan/C-5528-2012; Singh,
David/I-2416-2012
FU National Science Foundation [DMR 0705171]; Department of Energy
[DE-FG02-04ER46105]
FX The authors are grateful to E. Abrahams, A.V. Boris, A.V. Chubukov, A.J.
Millis, O. Shpyrko, Q. si and C. Wu for discussions. M.M.Q. thanks A.
Kuzmenko for assistance with the software for infrared data analysis.
D.N.B. acknowledges support from the National Science Foundation (gran
NSF DMR 0705171) and M.B.M. acknowledges support from the Department of
Energy (grant DE-FG02-04ER46105).
NR 38
TC 224
Z9 224
U1 9
U2 62
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1745-2473
J9 NAT PHYS
JI Nat. Phys.
PD SEP
PY 2009
VL 5
IS 9
BP 647
EP 650
DI 10.1038/NPHYS1343
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 497WR
UT WOS:000270095600015
ER
PT J
AU Genov, DA
Zhang, S
Zhang, X
AF Genov, Dentcho A.
Zhang, Shuang
Zhang, Xiang
TI Mimicking celestial mechanics in metamaterials
SO NATURE PHYSICS
LA English
DT Article
ID LOW GROUP-VELOCITY; MOVING-MEDIA; LIGHT; INDEX; REFRACTION; OPTICS;
FIELDS
AB Einstein's general theory of relativity establishes equality between matter-energy density and the curvature of spacetime. As a result, light and matter follow natural paths in the inherent spacetime and may experience bending and trapping in a specific region of space. So far, the interaction of light and matter with curved spacetime has been predominantly studied theoretically and through astronomical observations. Here, we propose to link the newly emerged field of artificial optical materials to that of celestial mechanics, thus opening the way to investigate light phenomena reminiscent of orbital motion, strange attractors and chaos, in a controlled laboratory environment. The optical-mechanical analogy enables direct studies of critical light/matter behaviour around massive celestial bodies and, on the other hand, points towards the design of novel optical cavities and photon traps for application in microscopic devices and lasers systems.
C1 [Genov, Dentcho A.; Zhang, Shuang; Zhang, Xiang] Univ Calif Berkeley, NSF Nanoscale Sci & Engn Ctr, Berkeley, CA 94720 USA.
[Genov, Dentcho A.] Louisiana Tech Univ, Coll Engn & Sci, Ruston, LA 71272 USA.
[Zhang, Xiang] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Zhang, X (reprint author), Univ Calif Berkeley, NSF Nanoscale Sci & Engn Ctr, Berkeley, CA 94720 USA.
EM xiang@berkeley.edu
RI Zhang, Xiang/F-6905-2011; zhang, shuang/G-5224-2011
FU US Army Research Office ARO [50432-PH-MUR]; NSF [CMMI-0751621, LEQSF
(2007-12)-ENH-PKSFI-PRS-01]
FX This work has been supported by US Army Research Office ARO MURI program
50432-PH-MUR, the NSF Nano-scale Science and Engineering Center (NSEC)
under Grant No. CMMI-0751621 and Louisiana Board of Regents under
contract number LEQSF (2007-12)-ENH-PKSFI-PRS-01. We would also like to
thank G. Bartal and D. Pile for important discussions and assistance.
NR 34
TC 163
Z9 168
U1 5
U2 41
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1745-2473
J9 NAT PHYS
JI Nat. Phys.
PD SEP
PY 2009
VL 5
IS 9
BP 687
EP 692
DI 10.1038/NPHYS1338
PG 6
WC Physics, Multidisciplinary
SC Physics
GA 497WR
UT WOS:000270095600023
ER
PT J
AU Nagler, B
Zastrau, U
Faustlin, RR
Vinko, SM
Whitcher, T
Nelson, AJ
Sobierajski, R
Krzywinski, J
Chalupsky, J
Abreu, E
Bajt, S
Bornath, T
Burian, T
Chapman, H
Cihelka, J
Doppner, T
Duesterer, S
Dzelzainis, T
Fajardo, M
Forster, E
Fortmann, C
Galtier, E
Glenzer, SH
Gode, S
Gregori, G
Hajkova, V
Heimann, P
Juha, L
Jurek, M
Khattak, FY
Khorsand, AR
Klinger, D
Kozlova, M
Laarmann, T
Lee, HJ
Lee, RW
Meiwes-Broer, KH
Mercere, P
Murphy, WJ
Przystawik, A
Redmer, R
Reinholz, H
Riley, D
Ropke, G
Rosmej, F
Saksl, K
Schott, R
Thiele, R
Tiggesbaumker, J
Toleikis, S
Tschentscher, T
Uschmann, I
Vollmer, HJ
Wark, JS
AF Nagler, Bob
Zastrau, Ulf
Faeustlin, Roland R.
Vinko, Sam M.
Whitcher, Thomas
Nelson, A. J.
Sobierajski, Ryszard
Krzywinski, Jacek
Chalupsky, Jaromir
Abreu, Elsa
Bajt, Sasa
Bornath, Thomas
Burian, Tomas
Chapman, Henry
Cihelka, Jaroslav
Doeppner, Tilo
Duesterer, Stefan
Dzelzainis, Thomas
Fajardo, Marta
Foerster, Eckhart
Fortmann, Carsten
Galtier, Eric
Glenzer, Siegfried H.
Goede, Sebastian
Gregori, Gianluca
Hajkova, Vera
Heimann, Phil
Juha, Libor
Jurek, Marek
Khattak, Fida Y.
Khorsand, Ali Reza
Klinger, Dorota
Kozlova, Michaela
Laarmann, Tim
Lee, Hae Ja
Lee, Richard W.
Meiwes-Broer, Karl-Heinz
Mercere, Pascal
Murphy, William J.
Przystawik, Andreas
Redmer, Ronald
Reinholz, Heidi
Riley, David
Roepke, Gerd
Rosmej, Frank
Saksl, Karel
Schott, Romain
Thiele, Robert
Tiggesbaeumker, Josef
Toleikis, Sven
Tschentscher, Thomas
Uschmann, Ingo
Vollmer, Hubert J.
Wark, Justin S.
TI Turning solid aluminium transparent by intense soft X-ray
photoionization
SO NATURE PHYSICS
LA English
DT Article
ID FREE-ELECTRON LASER; TRANSITIONS; SPECTRUM; METALS; STATE; WATER
AB Saturable absorption is a phenomenon readily seen in the optical and infrared wavelengths. It has never been observed in core-electron transitions owing to the short lifetime of the excited states involved and the high intensities of the soft X-rays needed. We report saturable absorption of an L-shell transition in aluminium using record intensities over 10(16)W cm(-2) at a photon energy of 92 eV. From a consideration of the relevant timescales, we infer that immediately after the X-rays have passed, the sample is in an exotic state where all of the aluminium atoms have an L-shell hole, and the valence band has approximately a 9 eV temperature, whereas the atoms are still on their crystallographic positions. Subsequently, Auger decay heats the material to the warm dense matter regime, at around 25 eV temperatures. The method is an ideal candidate to study homogeneous warm dense matter, highly relevant to planetary science, astrophysics and inertial confinement fusion.
C1 [Nagler, Bob; Vinko, Sam M.; Whitcher, Thomas; Gregori, Gianluca; Murphy, William J.; Wark, Justin S.] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England.
[Zastrau, Ulf; Foerster, Eckhart; Uschmann, Ingo] Univ Jena, Inst Opt & Quantenelekt, D-07743 Jena, Germany.
[Faeustlin, Roland R.; Duesterer, Stefan; Laarmann, Tim; Toleikis, Sven] Deutsch Elektronen Synchrotron DESY, D-22607 Hamburg, Germany.
[Nelson, A. J.; Doeppner, Tilo; Glenzer, Siegfried H.; Lee, Richard W.; Vollmer, Hubert J.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Sobierajski, Ryszard; Jurek, Marek; Klinger, Dorota] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland.
[Sobierajski, Ryszard; Khorsand, Ali Reza] EURATOM, FOM, Inst Plasma Phys Rijnhuizen, NL-3430 BE Nieuwegein, Netherlands.
[Krzywinski, Jacek] SLAC, Natl Accelerator Lab, Menlo Pk, CA 94025 USA.
[Chalupsky, Jaromir; Burian, Tomas; Cihelka, Jaroslav; Hajkova, Vera; Juha, Libor] Acad Sci Czech Republic, Inst Phys, Prague 18221 8, Czech Republic.
[Abreu, Elsa; Fajardo, Marta; Kozlova, Michaela] Inst Super Tecn, IPFN, GoLP, P-1049001 Lisbon, Portugal.
[Bornath, Thomas; Fortmann, Carsten; Goede, Sebastian; Meiwes-Broer, Karl-Heinz; Przystawik, Andreas; Redmer, Ronald; Reinholz, Heidi; Roepke, Gerd; Thiele, Robert; Tiggesbaeumker, Josef] Univ Rostock, Inst Phys, D-18051 Rostock, Germany.
[Chapman, Henry; Riley, David] DESY, Ctr Free Electron Laser Sci, D-22607 Hamburg, Germany.
[Chapman, Henry; Rosmej, Frank; Schott, Romain] Univ Hamburg, D-22761 Hamburg, Germany.
[Dzelzainis, Thomas] Queens Univ Belfast, Belfast BT7 1NN, Antrim, North Ireland.
[Galtier, Eric] UPMC, F-75005 Paris, France.
[Heimann, Phil] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Khattak, Fida Y.] Kohat Univ Sci & Technol, Dept Phys, Kohat 26000, Nwfp, Pakistan.
[Lee, Hae Ja] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Mercere, Pascal] SOLEIL, F-91192 Gif Sur Yvette, France.
[Saksl, Karel] Slovak Acad Sci, Inst Mat Res, Kosice 04001, Slovakia.
[Tschentscher, Thomas] DESY, European XFEL Project Team, D-22607 Hamburg, Germany.
RP Nagler, B (reprint author), Univ Oxford, Dept Phys, Clarendon Lab, Parks Rd, Oxford OX1 3PU, England.
EM Bob.Nagler@physics.ox.ac.uk
RI Chapman, Henry/G-2153-2010; Bajt, Sasa/G-2228-2010; Sobierajski,
Ryszard/E-7619-2012; Redmer, Ronald/F-3046-2013; Vinko, Sam/I-4845-2013;
Hajkova, Vera/G-9391-2014; Chalupsky, Jaromir/H-2079-2014; Burian,
Tomas/H-3236-2014; Fajardo, Marta/A-4608-2012; KHATTAK, Fida
Younus/L-2404-2015; Klinger, Dorota/K-8819-2016;
OI Meiwes-Broer, Karl-Heinz/0000-0002-8516-0470; Zastrau,
Ulf/0000-0002-3575-4449; Chapman, Henry/0000-0002-4655-1743; Vinko,
Sam/0000-0003-1016-0975; Burian, Tomas/0000-0003-3982-9978; Fajardo,
Marta/0000-0003-2133-2365; Thiele, Robert/0000-0001-8350-9942; Bornath,
Thomas/0000-0003-2831-2586
FU DESY; European Community [RII3-CT-2004-506008]; Deutsche
Forschungsgemeinschaft; EU; Slovak Grant Agency for Science [2/7196/27];
Czech Ministry of Education [LC510, LC528, LA08024]; Academy of Sciences
of the Czech Republic [Z10100523, IAA400100701, KAN 300100702]; US
Department of Energy [DE-AC03-76SF00098, DE-AC52-07NA27344]; German
Federal Ministry for Education and Research [FSP 301-FLASH]; Ministry of
Science and Higher Education of Poland [DESY/68/2007]; [08-ERI-002];
[08-LW-004]
FX The authors want to acknowledge K. Budil of LLNL for assistance in
support in funding, and acknowledge support for access to FLASH by DESY
and the European Community under contract RII3-CT-2004-506008 (IA-SFS).
The authors from Universitat Rostock are supported by the Deutsche
Forschungsgemeinschaft within SFB 652, B.N. by the EU Marie-Curie RTN
'FLASH', S. M. V. by EPSRC/STFC, W. M. by AWE, K. S. by the Slovak Grant
Agency for Science (Grant No. 2/7196/27) and L.J., J.C., J.Ch. and V. H.
by the Czech Ministry of Education (grants LC510, LC528 and LA08024) and
Academy of Sciences of the Czech Republic (Z10100523, IAA400100701, and
KAN 300100702). Technical assistance by A. Aquila, J. Meyer-Illse and E.
M. Gullikson (LBNL) during the ALS beamtime is greatly appreciated.
Operation of the Advanced Light Source was supported by the Director,
Office of Science, Office of Basic Energy Sciences, of the US Department
of Energy under Contract No. DE-AC03-76SF00098. We gratefully
acknowledge financial support by the German Federal Ministry for
Education and Research through project FSP 301-FLASH, and from the
Ministry of Science and Higher Education of Poland through grant SPB No.
DESY/68/2007. This work was in part carried out under the auspices of
the US Department of Energy by Lawrence Livermore National Laboratory
under Contract DE-AC52-07NA27344, and in part supported by grants
08-ERI-002 and 08-LW-004.
NR 28
TC 160
Z9 160
U1 4
U2 62
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1745-2473
J9 NAT PHYS
JI Nat. Phys.
PD SEP
PY 2009
VL 5
IS 9
BP 693
EP 696
DI 10.1038/NPHYS1341
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 497WR
UT WOS:000270095600024
ER
PT J
AU Liu, AP
Fletcher, DA
AF Liu, Allen P.
Fletcher, Daniel A.
TI Biology under construction: in vitro reconstitution of cellular function
SO NATURE REVIEWS MOLECULAR CELL BIOLOGY
LA English
DT Review
ID ACTIN-BASED MOTILITY; MONODISPERSE DOUBLE EMULSIONS; SELF-ORGANIZATION;
IMMUNOLOGICAL SYNAPSE; DEOXYRIBONUCLEIC-ACID; ENDOPLASMIC-RETICULUM;
VESICLE FORMATION; ESCHERICHIA-COLI; ARP2/3 COMPLEX; LIPID-BILAYERS
AB We are much better at taking cells apart than putting them together. Reconstitution of biological processes from component molecules has been a powerful but difficult approach to studying functional organization in biology. Recently, the convergence of biochemical and cell biological advances with new experimental and computational tools is providing the opportunity to reconstitute increasingly complex processes. We predict that this bottom-up strategy will uncover basic processes that guide cellular assembly, advancing both basic and applied sciences.
C1 [Fletcher, Daniel A.] Univ Calif Berkeley, Biophys Grp, Berkeley, CA 94702 USA.
[Fletcher, Daniel A.] Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94702 USA.
[Fletcher, Daniel A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
[Liu, Allen P.] Scripps Res Inst, Dept Cell Biol, La Jolla, CA 92037 USA.
RP Fletcher, DA (reprint author), Univ Calif Berkeley, Biophys Grp, Berkeley, CA 94702 USA.
EM fletch@berkeley.edu
RI Liu, Allen/A-1704-2011
OI Liu, Allen/0000-0002-0309-7018
FU Natural Sciences and Engineering Research Council of Canada; National
Institutes of Health; Nanomedicine Development Centre
FX We apologize to those colleagues whose original and important work could
not be cited owing to space limitations. We thank D. Richmond, J.
Stachowiak and the rest of the Fletcher laboratory, as well as T.
Pucadyil, for helpful discussion. A. P. L. is supported by the Natural
Sciences and Engineering Research Council of Canada. D. A. F. is funded
by National Institutes of Health R01 grants and a Nanomedicine
Development Centre grant.
NR 67
TC 87
Z9 89
U1 7
U2 46
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1471-0072
J9 NAT REV MOL CELL BIO
JI Nat. Rev. Mol. Cell Biol.
PD SEP
PY 2009
VL 10
IS 9
BP 644
EP 650
DI 10.1038/nrm2746
PG 7
WC Cell Biology
SC Cell Biology
GA 491QN
UT WOS:000269594300014
PM 19672276
ER
PT J
AU Wiltzius, JJW
Landau, M
Nelson, R
Sawaya, MR
Apostol, MI
Goldschmidt, L
Soriaga, AB
Cascio, D
Rajashankar, K
Eisenberg, D
AF Wiltzius, Jed J. W.
Landau, Meytal
Nelson, Rebecca
Sawaya, Michael R.
Apostol, Marcin I.
Goldschmidt, Lukasz
Soriaga, Angela B.
Cascio, Duilio
Rajashankar, Kanagalaghatta
Eisenberg, David
TI Molecular mechanisms for protein-encoded inheritance
SO NATURE STRUCTURAL & MOLECULAR BIOLOGY
LA English
DT Article
ID ISLET AMYLOID POLYPEPTIDE; CROSS-BETA SPINE; STRUCTURAL INSIGHTS; PRION
PROTEIN; HUMAN AMYLIN; FIBRILS; SEQUENCE; CONFORMATION; POLYMORPHISM;
TRANSMISSION
AB In prion inheritance and transmission, strains are phenotypic variants encoded by protein 'conformations'. However, it is unclear how a protein conformation can be stable enough to endure transmission between cells or organisms. Here we describe new polymorphic crystal structures of segments of prion and other amyloid proteins, which offer two structural mechanisms for the encoding of prion strains. In packing polymorphism, prion strains are encoded by alternative packing arrangements (polymorphs) of beta-sheets formed by the same segment of a protein; in segmental polymorphism, prion strains are encoded by distinct beta-sheets built from different segments of a protein. Both forms of polymorphism can produce enduring conformations capable of encoding strains. These molecular mechanisms for transfer of protein-encoded information into prion strains share features with the familiar mechanism for transfer of nucleic acid-encoded information into microbial strains, including sequence specificity and recognition by noncovalent bonds.
C1 [Wiltzius, Jed J. W.; Landau, Meytal; Nelson, Rebecca; Sawaya, Michael R.; Apostol, Marcin I.; Goldschmidt, Lukasz; Soriaga, Angela B.; Cascio, Duilio; Eisenberg, David] Univ Calif Los Angeles, Howard Hughes Med Inst, Inst Mol Biol, DOE Inst Genom & Prote, Los Angeles, CA 90024 USA.
[Rajashankar, Kanagalaghatta] Cornell Univ, Argonne Natl Lab, NE CAT, Argonne, IL USA.
[Rajashankar, Kanagalaghatta] Cornell Univ, Argonne Natl Lab, Dept Chem & Chem Biol, Argonne, IL USA.
RP Eisenberg, D (reprint author), Univ Calif Los Angeles, Howard Hughes Med Inst, Inst Mol Biol, DOE Inst Genom & Prote, Los Angeles, CA 90024 USA.
EM david@mbi.ucla.edu
RI Eisenberg, David/E-2447-2011; landau, Meytal/J-3075-2012;
OI Sawaya, Michael/0000-0003-0874-9043
FU National Science Foundation; National Institutes of Health and Howard
Hughes Medical Institute
FX We thank the NE-CAT beamline at the Advanced Photon Source and ID-13
beamline at the European Synchrotron Radiation Facility for beam time
and collection assistance, and the National Science Foundation, National
Institutes of Health and Howard Hughes Medical Institute for financial
support, and P. Chien for discussion.
NR 43
TC 136
Z9 137
U1 2
U2 45
PU NATURE PUBLISHING GROUP
PI NEW YORK
PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA
SN 1545-9985
J9 NAT STRUCT MOL BIOL
JI Nat. Struct. Mol. Biol.
PD SEP
PY 2009
VL 16
IS 9
BP 973
EP U98
DI 10.1038/nsmb.1643
PG 7
WC Biochemistry & Molecular Biology; Biophysics; Cell Biology
SC Biochemistry & Molecular Biology; Biophysics; Cell Biology
GA 490TS
UT WOS:000269528700015
PM 19684598
ER
PT J
AU Wang, J
Dye, BT
Rajashankar, KR
Kurinov, I
Schulman, BA
AF Wang, Jing
Dye, Billy T.
Rajashankar, Kanagalaghatta R.
Kurinov, Igor
Schulman, Brenda A.
TI Insights into anaphase promoting complex TPR subdomain assembly from a
CDC26-APC6 structure
SO NATURE STRUCTURAL & MOLECULAR BIOLOGY
LA English
DT Article
ID FISSION YEAST; SACCHAROMYCES-CEREVISIAE; BINDING; PHOSPHORYLATION;
IDENTIFICATION; SUBUNITS; DOMAIN; SITES; APC/C; CELLS
AB The multisubunit anaphase promoting complex (APC) is an essential cell-cycle regulator. Although CDC26 is known to have a role in APC assembly, its molecular function has remained unclear. Biophysical, structural and genetic studies presented here reveal that CDC26 stabilizes the structure of APC6, a core TPR protein required for APC integrity. Notably, CDC26-APC6 association involves an intermolecular TPR mimic composed of one helix from each protein.
C1 [Wang, Jing; Dye, Billy T.; Schulman, Brenda A.] St Jude Childrens Hosp, Dept Struct Biol & Genet, Memphis, TN 38105 USA.
[Wang, Jing; Dye, Billy T.; Schulman, Brenda A.] St Jude Childrens Hosp, Dept Tumor Cell Biol, Memphis, TN 38105 USA.
[Dye, Billy T.; Schulman, Brenda A.] St Jude Childrens Hosp, Howard Hughes Med Inst, Memphis, TN 38105 USA.
[Rajashankar, Kanagalaghatta R.; Kurinov, Igor] Cornell Univ, Dept Chem & Chem Biol, NE CAT, Adv Photon Source, Argonne, IL USA.
RP Schulman, BA (reprint author), St Jude Childrens Hosp, Dept Struct Biol & Genet, 332 N Lauderdale St, Memphis, TN 38105 USA.
EM brenda.schulman@stjude.org
FU American Lebanese Syrian Associated Charities (ALSAC); US National
Institutes of Health (NIH) [P30CA021765]; National Center for Research
Resources at NIH [RR-15301]; US Department of Energy, Office of Basic
Energy Sciences [W-31-109-ENG-38]
FX We are indebted to D. King (Howard Hughes Medical Institute Mass
Spectrometry Laboratory), S. Otieno and R. Kriwacki for assistance with
CD, C. Ross and D. Miller for computational support and D. W. Miller and
S. Bozeman for administration. This work was funded by the American
Lebanese Syrian Associated Charities (ALSAC), the US National Institutes
of Health (NIH) (P30CA021765 to St. Jude Cancer Center), a Beckman Young
Investigator Award to B. A. S. and the Howard Hughes Medical Institute.
NECAT beamlines (Advanced Photon Source (APS)) are supported by RR-15301
from the National Center for Research Resources at NIH. APS is supported
by the US Department of Energy, Office of Basic Energy Sciences,
contract W-31-109-ENG-38. B. A. S. is an Investigator of the Howard
Hughes Medical Institute.
NR 20
TC 24
Z9 27
U1 2
U2 3
PU NATURE PUBLISHING GROUP
PI NEW YORK
PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA
SN 1545-9985
J9 NAT STRUCT MOL BIOL
JI Nat. Struct. Mol. Biol.
PD SEP
PY 2009
VL 16
IS 9
BP 987
EP 989
DI 10.1038/nsmb.1645
PG 3
WC Biochemistry & Molecular Biology; Biophysics; Cell Biology
SC Biochemistry & Molecular Biology; Biophysics; Cell Biology
GA 490TS
UT WOS:000269528700017
PM 19668213
ER
PT J
AU Zink, M
Vollmayr, B
Gebicke-Haerter, PJ
Henn, FA
AF Zink, M.
Vollmayr, B.
Gebicke-Haerter, P. J.
Henn, F. A.
TI Reduced Expression of GABA Transporter GAT3 in Helpless Rats, an Animal
Model of Depression
SO NEUROCHEMICAL RESEARCH
LA English
DT Article
DE Animal model; Behaviour; Depression; Helplessness; GABA; Glia;
Transporter
ID AMINOBUTYRIC-ACID CONCENTRATIONS; MAGNETIC-RESONANCE SPECTROSCOPY;
FORCED SWIMMING TEST; LEARNED HELPLESSNESS; MOOD DISORDERS; BRAIN GABA;
SYNAPTIC VESICLES; PREFRONTAL CORTEX; COMPLEXIN-II; MICE
AB Mood disorders have been linked to glial and synaptic pathology such as disturbed neurotransmission of gamma-aminobutyric acid (GABA). We evaluated the expression of GABAergic marker genes in rats with helpless behaviour, an animal model of depression. Male Sprague-Dawley rats from inbred lines were tested for helpless behaviour and grouped according to failures in terminating foot shock currents. Expression levels of GABAergic marker genes were assessed using semiquantitative in situ-hybridization. Animals with congenital helpless behaviour (cH) were unable to escape current exposure in contrast to cH-animals derived from the same litters with low failure rates and to non-helpless animals (cNH). We found a significant downregulation of the GABA transporter GAT3 in cLH rats. GAT1 showed small changes, glutamic acid decarboxylase (GAD67) and the vesicular GABA transporter were not significantly altered. Reduced GABA transporter expression is well in concert with the behavioural phenotypes of knockout animals and strengthens the hypothesis of impaired glial functions in depression.
C1 [Zink, M.; Vollmayr, B.] Cent Inst Mental Hlth, Dept Psychiat & Psychotherapy, D-68072 Mannheim, Germany.
[Gebicke-Haerter, P. J.] Cent Inst Mental Hlth, Dept Psychopharmacol, D-68072 Mannheim, Germany.
[Henn, F. A.] Brookhaven Natl Lab, Long Isl City, NY USA.
RP Zink, M (reprint author), Cent Inst Mental Hlth, Dept Psychiat & Psychotherapy, POB 122120, D-68072 Mannheim, Germany.
EM mathias.zink@zi-mannheim.de
FU Deutsche Forschungsgemeinschaft [SFB 636 B2]
FX The excellent technical assistance of H. Schamber and E. Roebel is
gratefully acknowledged. This study was funded by the Deutsche
Forschungsgemeinschaft (SFB 636 B2).
NR 75
TC 14
Z9 17
U1 1
U2 3
PU SPRINGER/PLENUM PUBLISHERS
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0364-3190
J9 NEUROCHEM RES
JI Neurochem. Res.
PD SEP
PY 2009
VL 34
IS 9
BP 1584
EP 1593
DI 10.1007/s11064-009-9947-2
PG 10
WC Biochemistry & Molecular Biology; Neurosciences
SC Biochemistry & Molecular Biology; Neurosciences & Neurology
GA 474JY
UT WOS:000268280800008
PM 19288275
ER
PT J
AU Hooker, JM
Munro, TA
Beguin, C
Alexoff, D
Shea, C
Xu, YW
Cohen, BM
AF Hooker, Jacob M.
Munro, Thomas A.
Beguin, Cecile
Alexoff, David
Shea, Colleen
Xu, Youwen
Cohen, Bruce M.
TI Salvinorin A and derivatives: Protection from metabolism does not
prolong short-term, whole-brain residence
SO NEUROPHARMACOLOGY
LA English
DT Article
DE Salvia; Salvinorin A; Positron emission tomography; Kappa opioid;
Carbon-11
ID KAPPA-OPIOID-RECEPTOR; PLANT-DERIVED HALLUCINOGEN; AGONIST; POTENT;
RATS; ANTAGONISTS; DISRUPTION; DYNORPHIN; ANALOGS; ONSET
AB Salvinorin A (SA) is a potent kappa opioid agonist with a brief duration of action. Consistent with this, our previous positron emission tomography (PET) studies of carbon-11 labeled SA showed that brain levels decrease rapidly after intravenous administration. SA is rapidly metabolized, giving the much less potent salvinorin B (SB), which is presumed to be responsible in part for SA's brief duration of action. To test this, we labeled the metabolically stable methyl ester of SA and SB with carbon-11 and compared their pharmacokinetics by PET imaging after intravenous administration to baboons. Labeling of salvinorin B ethoxymethyl ether (EOM-SB), a derivative with greater potency and resistance to metabolism, provided an additional test of the role of metabolism in brain efflux. Plasma analysis confirmed that SB and EOM-SB exhibited greater metabolic stability than SA. However, the three compounds exhibited very similar pharmacokinetics in brain, entering and exiting rapidly. This suggests that metabolism is not solely responsible for the brief brain residence time of SA. We determined that whole-brain concentrations of EOM-SB declined more slowly than SA after intraperitoneal administration in rodents. This is likely due to a combination in EOM-SB's increased metabolic stability and its decreased plasma protein affinity. Our results suggest that protecting salvinorin A derivatives from metabolism will prolong duration of action, but only when administered by routes giving slow absorption. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Hooker, Jacob M.; Alexoff, David; Shea, Colleen; Xu, Youwen] Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA.
[Munro, Thomas A.; Beguin, Cecile; Cohen, Bruce M.] McLean Hosp, Belmont, MA 02478 USA.
[Munro, Thomas A.; Beguin, Cecile; Cohen, Bruce M.] Harvard Univ, Sch Med, Dept Psychiat, Boston, MA 02215 USA.
RP Hooker, JM (reprint author), Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA.
EM hooker@bnl.gov
RI Munro, Thomas/B-2712-2009;
OI Munro, Thomas/0000-0002-3366-7149; Hooker, Jacob/0000-0002-9394-7708
FU U.S. Department of Energy [DE-AC02-98CH10886]; NIH [IF32EB008320-01];
Goldhaber Distinguished Fellowship program at BNL
FX This work was carried out at McLean Hospital where TA.M. and C.B. were
supported by the Stanley Medical Research Institute and NARSAD and at
Brookhaven National Laboratory under contract DE-AC02-98CH10886 with the
U.S. Department of Energy, supported by its Office of Biological and
Environmental Research. J.M.H. was supported byan NIH Postdoctoral
Fellowship (IF32EB008320-01) and through the Goldhaber Distinguished
Fellowship program at BNL The authors are grateful to Dr. Michael
Schueller for cyclotron operation, Dr. Stephen Dewey for technical
assistance with rodent experiments, and the PET imaging team at BNL
(Pauline Carter, Payton King, and Don Warner) for carrying out primate
imaging experiments.
NR 29
TC 18
Z9 18
U1 0
U2 4
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0028-3908
J9 NEUROPHARMACOLOGY
JI Neuropharmacology
PD SEP
PY 2009
VL 57
IS 4
BP 386
EP 391
DI 10.1016/j.neuropharm.2009.06.044
PG 6
WC Neurosciences; Pharmacology & Pharmacy
SC Neurosciences & Neurology; Pharmacology & Pharmacy
GA 496ZP
UT WOS:000270020100006
PM 19591852
ER
PT J
AU Harvego, EA
McKellar, MG
O'Brien, JE
Herring, JS
AF Harvego, Edwin A.
McKellar, Michael G.
O'Brien, James E.
Herring, J. Stephen
TI Parametric evaluation of large-scale high-temperature electrolysis
hydrogen production using different advanced nuclear reactor heat
sources
SO NUCLEAR ENGINEERING AND DESIGN
LA English
DT Article; Proceedings Paper
CT 15th International Conference on Nuclear Engineering
CY APR, 2007
CL Nagoya, JAPAN
AB High-temperature electrolysis (HTE), when coupled to an advanced nuclear reactor capable of operating at reactor outlet temperatures of 800-950 degrees C, has the potential to efficiently produce the large quantities of hydrogen needed to meet future energy and transportation needs. To evaluate the potential benefits of nuclear-driven hydrogen production, the UniSim process analysis software was used to evaluate different reactor concepts coupled to a reference HTE process design concept. The reference HTE concept included an intermediate heat exchanger and intermediate helium loop to separate the reactor primary system from the HTE process loops and additional heat exchangers to transfer reactor heat from the intermediate loop to the HTE process loops. The two process loops consisted of the water/steam loop feeding the cathode side of a HTE electrolysis stack, and the sweep gas loop used to remove oxygen from the anode side. The UniSim model of the process loops included pumps to circulate the working fluids and heat exchangers to recover heat from the oxygen and hydrogen product streams to improve the overall hydrogen production efficiencies.
The reference HTE process loop model was coupled to separate UniSim models developed for three different advanced reactor concepts (a high-temperature helium cooled reactor concept and two different supercritical CO(2) reactor concepts). Sensitivity studies were then performed with the objective of evaluating the affect of reactor outlet temperature on the power cycle efficiency and overall hydrogen production efficiency of the integrated plant design for each of the reactor power cycles. The results of these sensitivity studies showed that overall power cycle and hydrogen production efficiencies increased with reactor outlet temperature, but the power cycles producing the highest efficiencies varied depending on the temperature range considered. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Harvego, Edwin A.; McKellar, Michael G.; O'Brien, James E.; Herring, J. Stephen] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
RP Harvego, EA (reprint author), Idaho Natl Lab, POB 1625, Idaho Falls, ID 83415 USA.
EM Edwin.Harvego@inl.gov; Michael.McKellar@inl.gov; james.OBrien@inl.gov;
J.Herring@inl.gov
NR 10
TC 11
Z9 12
U1 1
U2 6
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0029-5493
J9 NUCL ENG DES
JI Nucl. Eng. Des.
PD SEP
PY 2009
VL 239
IS 9
BP 1571
EP 1580
DI 10.1016/j.nucengdes.2009.03.003
PG 10
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 485RK
UT WOS:000269141200001
ER
PT J
AU Pope, MA
Mousseau, VA
AF Pope, Michael A.
Mousseau, Vincent A.
TI ACCURACY AND EFFICIENCY OF A COUPLED NEUTRONICS AND THERMAL HYDRAULICS
MODEL
SO NUCLEAR ENGINEERING AND TECHNOLOGY
LA English
DT Article
CT 12th International Topical Meeting on Nuclear Reactor Thermal Hydraulics
CY 2007-2009
CL Pittsburgh, PA
DE Modeling; Simulation; JFNK; Fully-implicit; Coupled
ID EQUATIONS
AB This manuscript will discuss a numerical method where the six equations of two-phase flow, the solid heat conduction equations, and the two equations that describe neutron diffusion and precursor concentration are solved together in a tightly coupled, nonlinear fashion for a simplified model of a nuclear reactor core. This approach has two important advantages. The first advantage is a higher level of accuracy. Because the equations are solved together in a single nonlinear system, the Solution is more accurate than the traditional "operator split" approach where the two-phase flow equations are solved first, the heat conduction is solved second and the neutron diffusion is solved third, limiting the temporal accuracy to 1(st) order because the nonlinear coupling between the physics is handled explicitly. The second advantage of the method described in this manuscript is that the time step control ill the fully implicit system can be based oil the timescale of the solution rather than a stability-based time step restriction like the material Courant limit required of operator-split methods. In this work, a pilot code was used which employs this tightly coupled, fully implicit method to Simulate a reactor core. Results are presented from a simulated control rod movement which show 2(nd) order accuracy in time. Also described in this paper is a simulated rod ejection demonstrating how the fastest timescale of the problem can change between the state variables of neutronics, conduction and two-phase flow during the course of a transient.
C1 [Pope, Michael A.; Mousseau, Vincent A.] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
RP Pope, MA (reprint author), Idaho Natl Lab, POB 1625, Idaho Falls, ID 83415 USA.
EM michael.pope@inl.gov
NR 7
TC 3
Z9 3
U1 0
U2 5
PU KOREAN NUCLEAR SOC
PI DAEJEON
PA FLOOR 4, NUTOPIA BUILDING, 342-1 JANGDAE-DONG, YUSEONG-GU, DAEJEON,
305-308, SOUTH KOREA
SN 1738-5733
J9 NUCL ENG TECHNOL
JI Nucl. Eng. Technol.
PD SEP
PY 2009
VL 41
IS 7
BP 885
EP 892
PG 8
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 503SN
UT WOS:000270560100003
ER
PT J
AU Zhao, HH
Peterson, PF
AF Zhao, Haihua
Peterson, Per F.
TI ONE-DIMENSIONAL ANALYSIS OF THERMAL STRATIFICATION IN THE AHTR COOLANT
POOL
SO NUCLEAR ENGINEERING AND TECHNOLOGY
LA English
DT Article
CT 12th International Topical Meeting on Nuclear Reactor Thermal Hydraulics
CY 2007-2009
CL Pittsburgh, PA
DE Thermal Stratification; AHTR; SFR; One-dimensional; Enclosure Mixing
ID PLUMES; CONVECTION; MODEL; REACTOR
AB It is important to accurately predict the temperature and density distributions in large stratified enclosures both for design optimization and accident analysis. Current reactor system analysis codes only provide lumped-volume based models that can give very approximate results. Previous scaling analysis has shown that stratified mixing processes in large stably stratified enclosures can be described using one-dimensional differential equations, with the vertical transport by jets modeled using integral techniques. This allows very large reductions in computational effort compared to three-dimensional CFD simulation. The BMIX++ (Berkeley mechanistic MIXing code in C++) code was developed to implement such ideas. This paper summarizes major models for the BMIX++ code, presents the two-plume mixing experiment simulation as one validation example, and describes the codes' application to the liquid salt buffer pool system in the AHTR (Advanced High Temperature Reactor) design. Three design options have been simulated and they exhibit significantly different stratification patterns. One of design options shows the mildest thermal stratification and is identified as the best design option. This application shows that the BMIX++ code has capability to provide the reactor designers with insights to understand complex mixing behavior with mechanistic methods. Similar analysis is possible for liquid-metal cooled reactors.
C1 [Zhao, Haihua] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
[Peterson, Per F.] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA.
RP Zhao, HH (reprint author), Idaho Natl Lab, Idaho Falls, ID 83415 USA.
EM Haihua.Zhao@inl.gov
NR 27
TC 7
Z9 7
U1 0
U2 4
PU KOREAN NUCLEAR SOC
PI DAEJEON
PA FLOOR 4, NUTOPIA BUILDING, 342-1 JANGDAE-DONG, YUSEONG-GU, DAEJEON,
305-308, SOUTH KOREA
SN 1738-5733
J9 NUCL ENG TECHNOL
JI Nucl. Eng. Technol.
PD SEP
PY 2009
VL 41
IS 7
BP 953
EP 968
PG 16
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 503SN
UT WOS:000270560100009
ER
PT J
AU Catto, PJ
Parra, FI
Kagan, G
Simakov, AN
AF Catto, Peter J.
Parra, Felix I.
Kagan, Grigory
Simakov, Andrei N.
TI Limitations, insights and improvements to gyrokinetics
SO NUCLEAR FUSION
LA English
DT Article
ID TRANSPORT; PLASMA
AB We first consider gyrokinetic quasineutrality limitations when evaluating the axisymmetric radial electric field in a non-turbulent tokamak by an improved examination of intrinsic ambipolarity. We next prove that the background ions in a pedestal of poloidal ion gyroradius scale must be Maxwellian and nearly isothermal in Pfirsch-Schluter and banana regime tokamak plasmas, and then consider zonal flow behaviour in a pedestal. Finally, we focus on a simplifying procedure for our transport time scale hybrid gyrokinetic-fluid treatment that removes the limitations of gyrokinetic quasineutrality and remains valid in the pedestal.
C1 [Catto, Peter J.; Parra, Felix I.; Kagan, Grigory] MIT Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA.
[Simakov, Andrei N.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Catto, PJ (reprint author), MIT Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA.
EM catto@psfc.mit.edu
RI Parra, Felix I./C-1442-2012;
OI Parra, Felix I./0000-0001-9621-7404; Simakov, Andrei/0000-0001-7064-9153
FU US Department of Energy [DE-FG02-91ER-54109, DE-AC52-06NA-25396]; Center
for Multiscale Plasma Dynamics at the University of Maryland
FX This work is supported by the US Department of Energy grants at
DE-FG02-91ER-54109 at MIT and DE-AC52-06NA-25396 at LANL and the Center
for Multiscale Plasma Dynamics at the University of Maryland.
NR 22
TC 5
Z9 5
U1 0
U2 1
PU INT ATOMIC ENERGY AGENCY
PI VIENNA
PA WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIA
SN 0029-5515
J9 NUCL FUSION
JI Nucl. Fusion
PD SEP
PY 2009
VL 49
IS 9
AR 095026
DI 10.1088/0029-5515/49/9/095026
PG 8
WC Physics, Fluids & Plasmas
SC Physics
GA 528DO
UT WOS:000272421700007
ER
PT J
AU Diem, SJ
Taylor, G
Caughman, JB
Efthimion, PC
Kugel, H
LeBlanc, BP
Phillips, CK
Preinhaelter, J
Sabbagh, SA
Urban, J
Wilgen, JB
AF Diem, S. J.
Taylor, G.
Caughman, J. B.
Efthimion, P. C.
Kugel, H.
LeBlanc, B. P.
Phillips, C. K.
Preinhaelter, J.
Sabbagh, S. A.
Urban, J.
Wilgen, J. B.
TI Investigation of electron Bernstein wave (EBW) coupling and its critical
dependence on EBW collisional loss in high-beta, H-mode ST plasmas
SO NUCLEAR FUSION
LA English
DT Article
ID EMISSION
AB High-beta spherical tokamak (ST) plasma conditions cut off propagation of electron cyclotron (EC) waves used for heating and current drive in conventional aspect ratio tokamaks. The electron Bernstein wave (EBW) has no density cutoff and is strongly absorbed and emitted at the EC harmonics, allowing EBWs to be used for heating and current drive in STs. However, this application requires efficient EBW coupling in the high-beta, H-mode ST plasma regime. EBW emission (EBE) diagnostics and modelling have been employed on the National Spherical Torus Experiment (NSTX) to study oblique EBW to O-mode (B-X-O) coupling and propagation in H-mode plasmas. Efficient EBW coupling was measured before the L-H transition, but rapidly decayed thereafter. EBE simulations show that EBW collisional damping prior to mode conversion (MC) in the plasma scrape off reduces the coupling efficiency during the H-mode phase when the electron temperature is less than 30 eV inside the MC layer. Lithium evaporation during H-mode plasmas was successfully used to reduce this EBW collisional damping by reducing the electron density and increase the electron temperature in the plasma scrape off. Lithium conditioning increased the measured B-X-O coupling efficiency from less than 10% to 60%, consistent with EBE simulations.
C1 [Diem, S. J.; Caughman, J. B.; Wilgen, J. B.] Oak Ridge Natl Lab, Oak Ridge, TN USA.
[Taylor, G.; Efthimion, P. C.; Kugel, H.; LeBlanc, B. P.; Phillips, C. K.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
[Preinhaelter, J.; Urban, J.] Czech Inst Plasma Phys, Prague, Czech Republic.
[Sabbagh, S. A.] Columbia Univ, Dept Appl Phys & Appl Math, New York, NY USA.
RP Diem, SJ (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN USA.
EM diemsj@ornl.gov
RI Sabbagh, Steven/C-7142-2011; Preinhaelter, Josef/H-1394-2014; Urban,
Jakub/B-5541-2008; Caughman, John/R-4889-2016
OI Urban, Jakub/0000-0002-1796-3597; Caughman, John/0000-0002-0609-1164
FU USDOE [DE-AC02-76CH-03073, DE-FG02-91ER-54109, DE-FG03-02ER-54684,
DE-FG02-99ER-54521]
FX This research was supported by USDOE DE-AC02-76CH-03073,
DE-FG02-91ER-54109, DE-FG03-02ER-54684 and DE-FG02-99ER-54521 and a
grant to encourage innovations in fusion diagnostic systems. The authors
would like to thank L. Guttadora and P. Roney for their help in
developing the NSTX EBE diagnostic.
NR 17
TC 12
Z9 12
U1 0
U2 2
PU INT ATOMIC ENERGY AGENCY
PI VIENNA
PA WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIA
SN 0029-5515
J9 NUCL FUSION
JI Nucl. Fusion
PD SEP
PY 2009
VL 49
IS 9
AR 095027
DI 10.1088/0029-5515/49/9/095027
PG 6
WC Physics, Fluids & Plasmas
SC Physics
GA 528DO
UT WOS:000272421700008
ER
PT J
AU Gobbin, M
Marrelli, L
Fahrbach, HU
Garcia-Munoz, M
Gunter, S
Martin, P
White, RB
AF Gobbin, M.
Marrelli, L.
Fahrbach, H. U.
Garcia-Munoz, M.
Guenter, S.
Martin, P.
White, R. B.
CA ASDEX Upgrade Team
TI Numerical simulations of fast ion loss measurements induced by magnetic
islands in the ASDEX Upgrade tokamak
SO NUCLEAR FUSION
LA English
DT Article
ID SCINTILLATOR PROBE; FUSION PRODUCTS; TRANSPORT; TFTR
AB A test particle approach, implemented with the Hamiltonian code ORBIT, is used to simulate measurements of fast ion losses induced by magnetic islands in the ASDEX Upgrade tokamak. In particular, the numerical simulations reproduce the toroidal localization of losses and the lost ions pitch angle and energy distribution experimentally measured with the fast ion losses detector (FILD) in the presence of a neoclassical tearing mode (NTM). The simulated NTM induced losses occurring on time scales longer than 100 mu s are composed of mainly trapped or barely passing particles, consistently with the slow decay of the experimental signal from one FILD channel after the beam switch-off. The numerical simulations have been performed by taking into account the D-shaped plasma geometry, the collision mechanisms, the losses due to ripple effects and the rotation of the mode. The radial profile of the magnetic perturbation is adjusted in order to match ECE measurements. While statistical properties of FILD measurements are rather well reproduced, the simulated total amount of losses is found to be significantly affected by edge details of the magnetic perturbation as it determines the loss mechanism.
C1 [Gobbin, M.; Marrelli, L.; Martin, P.] EURATOM ENEA Assoc, Consorzio RFX, I-35127 Padua, Italy.
[Fahrbach, H. U.; Garcia-Munoz, M.; Guenter, S.] Max Planck Inst Plasma Phys, EURATOM Assoc, D-85748 Garching, Germany.
[White, R. B.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Gobbin, M (reprint author), EURATOM ENEA Assoc, Consorzio RFX, Corso Stati Uniti 4, I-35127 Padua, Italy.
RI garcia-munoz, manuel/C-6825-2008; Marrelli, Lionello/G-4451-2013; White,
Roscoe/D-1773-2013
OI garcia-munoz, manuel/0000-0002-3241-502X; Marrelli,
Lionello/0000-0001-5370-080X; White, Roscoe/0000-0002-4239-2685
FU European Communities
FX This work was supported by the European Communities under the contract
of Association between EURATOM/ENEA. The views and opinions expressed
herein do not necessarily reflect those of the European Commission.
NR 24
TC 7
Z9 7
U1 0
U2 8
PU INT ATOMIC ENERGY AGENCY
PI VIENNA
PA WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIA
SN 0029-5515
J9 NUCL FUSION
JI Nucl. Fusion
PD SEP
PY 2009
VL 49
IS 9
AR 095021
DI 10.1088/0029-5515/49/9/095021
PG 14
WC Physics, Fluids & Plasmas
SC Physics
GA 528DO
UT WOS:000272421700002
ER
PT J
AU Jakubowski, MW
Evans, TE
Fenstermacher, ME
Groth, M
Lasnier, CJ
Leonard, AW
Schmitz, O
Watkins, JG
Eich, T
Fundamenski, W
Moyer, RA
Wolf, RC
Baylor, LB
Boedo, JA
Burrell, KH
Frerichs, H
DeGrassie, JS
Gohil, P
Joseph, I
Mordijck, S
Lehnen, M
Petty, CC
Pinsker, RI
Reiter, D
Rhodes, TL
Samm, U
Schaffer, MJ
Snyder, PB
Stoschus, H
Osborne, T
Unterberg, B
Unterberg, E
West, WP
AF Jakubowski, M. W.
Evans, T. E.
Fenstermacher, M. E.
Groth, M.
Lasnier, C. J.
Leonard, A. W.
Schmitz, O.
Watkins, J. G.
Eich, T.
Fundamenski, W.
Moyer, R. A.
Wolf, R. C.
Baylor, L. B.
Boedo, J. A.
Burrell, K. H.
Frerichs, H.
deGrassie, J. S.
Gohil, P.
Joseph, I.
Mordijck, S.
Lehnen, M.
Petty, C. C.
Pinsker, R. I.
Reiter, D.
Rhodes, T. L.
Samm, U.
Schaffer, M. J.
Snyder, P. B.
Stoschus, H.
Osborne, T.
Unterberg, B.
Unterberg, E.
West, W. P.
TI Overview of the results on divertor heat loads in RMP controlled H-mode
plasmas on DIII-D
SO NUCLEAR FUSION
LA English
DT Article
ID DYNAMIC ERGODIC DIVERTOR; ASDEX-UPGRADE; MAGNETIC PERTURBATIONS; TARGET
PLATES; EDGE; FIELD; DEPOSITION; TRANSPORT; TOKAMAKS; TEXTOR
AB In this paper the manipulation of power deposition on divertor targets at DIII-D by the application of resonant magnetic perturbations (RMPs) for suppression of large type-I edge localized modes (ELMs) is analysed. We discuss the modification of the ELM characteristics by the RMP applied. It is shown that the width of the deposition pattern in ELMy H-mode depends linearly on the ELM deposited energy, whereas in the RMP phase of the discharge those patterns are controlled by the externally induced magnetic perturbation. It was also found that the manipulation of heat transport due to the application of small, edge RMP depends on the plasma pedestal electron collisionality nu(e)*. We compare in this analysis RMP and no RMP phases with and without complete ELM suppression. At high nu(e)* > 0.5, the heat flux during the ELM suppressed phase is of the same order as the inter-ELM and the no-RMP phase. However, below this collisionality value, a slight increase in the total power flux to the divertor is observed during the RMP phase. This is most likely caused by a more negative potential at the divertor surface due to hot electrons reaching the divertor surface from the pedestal area along perturbed, open field lines.
C1 [Jakubowski, M. W.; Eich, T.; Wolf, R. C.] IPP EURATOM Assoc, Max Planck Inst Plasmaphys, Garching, Germany.
[Jakubowski, M. W.; Eich, T.; Wolf, R. C.] IPP EURATOM Assoc, Max Planck Inst Plasmaphys, Greifswald, Germany.
[Jakubowski, M. W.; Schmitz, O.; Frerichs, H.; Lehnen, M.; Reiter, D.; Samm, U.; Stoschus, H.; Unterberg, B.] Forschungszentrum Julich, Inst Energieforsch Plasmaphys 4, Assoc FZJ EURATOM,TEC, Julich, Germany.
[Evans, T. E.; Leonard, A. W.; Baylor, L. B.; Burrell, K. H.; deGrassie, J. S.; Gohil, P.; Mordijck, S.; Petty, C. C.; Pinsker, R. I.; Schaffer, M. J.; Snyder, P. B.; Osborne, T.; Unterberg, E.; West, W. P.] Gen Atom Co, San Diego, CA 92186 USA.
[Fenstermacher, M. E.; Groth, M.; Lasnier, C. J.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Moyer, R. A.; Joseph, I.; Rhodes, T. L.] Univ Calif San Diego, La Jolla, CA 92093 USA.
[Watkins, J. G.] Sandia Natl Labs, Albuquerque, NM USA.
[Fundamenski, W.] Culham Sci Ctr, UKAEA Euratom Fus Assoc, Abingdon, Oxon, England.
RP Jakubowski, MW (reprint author), IPP EURATOM Assoc, Max Planck Inst Plasmaphys, Garching, Germany.
RI Groth, Mathias/G-2227-2013; Unterberg, Ezekial/F-5240-2016;
OI Unterberg, Ezekial/0000-0003-1353-8865; Baylor,
Larry/0000-0002-0325-7771; Unterberg, Bernhard/0000-0003-0866-957X
FU US Department of Energy [DE-AC04-94AL85000, DE-AC52-07NA27344,
DE-FC02-04ER54698, DE-FG02-04ER54758]
FX The work was supported by the US Department of Energy under
DE-AC04-94AL85000, DE-AC52-07NA27344, DE-FC02-04ER54698 and
DE-FG02-04ER54758.
NR 42
TC 73
Z9 73
U1 4
U2 20
PU INT ATOMIC ENERGY AGENCY
PI VIENNA
PA WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIA
SN 0029-5515
J9 NUCL FUSION
JI Nucl. Fusion
PD SEP
PY 2009
VL 49
IS 9
AR 095013
DI 10.1088/0029-5515/49/9/095013
PG 14
WC Physics, Fluids & Plasmas
SC Physics
GA 483BN
UT WOS:000268936900015
ER
PT J
AU Liu, W
Hsu, SC
Li, H
AF Liu, Wei
Hsu, Scott C.
Li, Hui
TI Ideal magnetohydrodynamic simulations of low beta compact toroid
injection into a hot strongly magnetized plasma
SO NUCLEAR FUSION
LA English
DT Article
ID ADVANCED FUELING SYSTEM; STOR-M TOKAMAK; SPHEROMAK INJECTION; CURRENT
DRIVE; PENETRATION; CONFINEMENT; DYNAMICS; JFT-2M; TORUS; ITER
AB We present results from three-dimensional ideal magnetohydrodynamic simulations of low beta compact toroid (CT) injection into a hot strongly magnetized plasma, with the aim of providing insight into CT fuelling of a tokamak with parameters relevant for the International Thermonuclear Experimental Reactor (ITER). A regime is identified in terms of CT injection speed and CT-to-background magnetic field ratio that appears promising for precise core fuelling. Shock-dominated regimes, which are probably unfavourable for tokamak fuelling, are also identified. The CT penetration depth is proportional to the CT injection speed and density. The entire CT evolution can be divided into three stages: (1) initial penetration, (2) compression in the direction of propagation and reconnection with the background magnetic field, and (3) coming to rest and spreading in the direction perpendicular to injection. Tilting of the CT is not observed due to the fast transit time of the CT across the background plasma.
C1 [Liu, Wei; Li, Hui] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Hsu, Scott C.] Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA.
RP Liu, W (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
EM wliu@lanl.gov
OI Hsu, Scott/0000-0002-6737-4934; Liu, Wei/0000-0003-0935-3999
FU DOE [DE-AC52-06NA25396]
FX The authors thank Shengtai Li for extensive advice on the code. The
authors also thank Roger Raman and Xianzhu Tang for very useful
discussions and constructive comments. This work was funded by DOE
contract no DE-AC52-06NA25396 under the Los Alamos Laboratory Directed
Research and Development (LDRD) Program.
NR 37
TC 5
Z9 5
U1 0
U2 5
PU INT ATOMIC ENERGY AGENCY
PI VIENNA
PA WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIA
SN 0029-5515
J9 NUCL FUSION
JI Nucl. Fusion
PD SEP
PY 2009
VL 49
IS 9
AR 095008
DI 10.1088/0029-5515/49/9/095008
PG 8
WC Physics, Fluids & Plasmas
SC Physics
GA 483BN
UT WOS:000268936900010
ER
PT J
AU Schmitz, L
White, AE
Wang, G
DeBoo, JC
deGrassie, JS
McKee, GR
Hillesheim, JC
Peebles, WA
Rhodes, TL
Carter, TA
Doyle, ED
Zeng, L
Burrell, KH
Petty, CC
Kinsey, J
Solomon, WA
Staebler, GM
AF Schmitz, L.
White, A. E.
Wang, G.
DeBoo, J. C.
deGrassie, J. S.
McKee, G. R.
Hillesheim, J. C.
Peebles, W. A.
Rhodes, T. L.
Carter, T. A.
Doyle, E. D.
Zeng, L.
Burrell, K. H.
Petty, C. C.
Kinsey, J.
Solomon, W. A.
Staebler, G. M.
CA DIII-D Team
TI Observation of reduced core electron temperature fluctuations and
intermediate wavenumber density fluctuations in H-mode plasmas
SO NUCLEAR FUSION
LA English
DT Article
ID DOPPLER REFLECTOMETRY; TORE-SUPRA; DIII-D; TOKAMAK; TURBULENCE;
TRANSPORT; PROFILE
AB In this paper, we report observations of reduced core electron temperature and intermediate-scale density fluctuations in H-mode. Electron temperature fluctuation levels are observed to decrease from L-mode levels (0.5% <= (T) over tilde (e)/T(e) <= 2% for k(theta)rho(s) < 0.5 as measured by correlation electron cyclotron emission radiometry) by at least a factor of four in H- and quiescent H-mode regimes in the DIII-D tokamak (r/a = 0.7). Linear stability calculations (using the trapped gyro-Landau fluid (TGLF) code) indicate that the observed temperature fluctuations are associated with L-mode ITG turbulence which is shear-stabilized at the L- to H-mode transition. Recent results from DIII-D provide the first experimental evidence that, in addition, intermediate-scale turbulence (0.5 < k(theta)rho(s) <= 3) is reduced at the L- H transition. A 30-40% prompt reduction (r/a >= 0.7) has been found at the L- H transition in co-injected medium density plasmas, with a larger decrease (>= 75%) observed near the pedestal top. Experimental results and TGLF calculations indicate that intermediate/small scale turbulence persists in H- mode at a reduced amplitude (0.6 <= r/a <= 1) and may substantially contribute to the residual anomalous H- mode electron heat transport.
C1 [Schmitz, L.; Wang, G.; Hillesheim, J. C.; Peebles, W. A.; Rhodes, T. L.; Carter, T. A.; Doyle, E. D.; Zeng, L.] Univ Calif Los Angeles, Los Angeles, CA 90095 USA.
[White, A. E.] Oak Ridge Inst Sci & Educ, Oak Ridge, TN 37831 USA.
[DeBoo, J. C.; deGrassie, J. S.; Burrell, K. H.; Petty, C. C.; Kinsey, J.; Staebler, G. M.] Gen Atom Co, San Diego, CA 92186 USA.
[McKee, G. R.] Univ Wisconsin, Madison, WI 53706 USA.
[Solomon, W. A.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Schmitz, L (reprint author), Univ Calif Los Angeles, Los Angeles, CA 90095 USA.
EM lschmitz@ucla.edu
RI Carter, Troy/E-7090-2010; White, Anne/B-8990-2011
OI Carter, Troy/0000-0002-5741-0495;
FU US Department of Energy [DE-FG02-08ER54984, DE-AC05-76OR00033,
DE-FC02-04ER54698, DE-FG02-89ER53296, DE-AC02-76CH03073]; General
Atomics [NS53250]
FX This work was supported by the US Department of Energy under
DE-FG02-08ER54984, DE-AC05-76OR00033, DE-FC02-04ER54698,
DE-FG02-89ER53296, DE-AC02-76CH03073 and General Atomics subcontract
NS53250.
NR 31
TC 9
Z9 9
U1 0
U2 3
PU INT ATOMIC ENERGY AGENCY
PI VIENNA
PA WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIA
SN 0029-5515
J9 NUCL FUSION
JI Nucl. Fusion
PD SEP
PY 2009
VL 49
IS 9
AR 095004
DI 10.1088/0029-5515/49/9/095004
PG 8
WC Physics, Fluids & Plasmas
SC Physics
GA 483BN
UT WOS:000268936900006
ER
PT J
AU Soukhanovskii, VA
Maingi, R
Gates, DA
Menard, JE
Paul, SF
Raman, R
Roquemore, AL
Bell, RE
Bush, CE
Kaita, R
Kugel, HW
LeBlanc, BP
Mueller, D
AF Soukhanovskii, V. A.
Maingi, R.
Gates, D. A.
Menard, J. E.
Paul, S. F.
Raman, R.
Roquemore, A. L.
Bell, R. E.
Bush, C. E.
Kaita, R.
Kugel, H. W.
LeBlanc, B. P.
Mueller, D.
CA NSTX Team
TI Divertor heat flux mitigation in high-performance H-mode discharges in
the National Spherical Torus Experiment
SO NUCLEAR FUSION
LA English
DT Article
ID SCRAPE-OFF LAYER; DIII-D TOKAMAK; VOLUME RECOMBINATION; IMPURITY
RADIATION; PARTICLE CONTROL; MOUNTED PROBES; CHAPTER 4; NSTX; PLASMAS;
POWER
AB Experiments conducted in high-performance 1.0 and 1.2 MA 6 MW NBI-heated H-mode discharges with a high magnetic flux expansion radiative divertor in NSTX demonstrate that significant divertor peak heat flux reduction and access to detachment may be facilitated naturally in a highly shaped spherical torus (ST) configuration. Improved plasma performance with high beta(t) = 15-25%, a high bootstrap current fraction f(BS) = 45-50%, longer plasma pulses and an H-mode regime with smaller ELMs has been achieved in the strongly shaped lower single null configuration with elongation kappa = 2.2-2.4 and triangularity delta = 0.7-0.8. Divertor peak heat fluxes were reduced from 6-12 to 0.5-2 MW m(-2) in ELMy H-mode discharges using the inherently high magnetic flux expansion f(m) = 15-25 and the partial detachment of the outer strike point at several D(2) injection rates. A good core confinement and pedestal characteristics were maintained, while the core carbon concentration and the associated Z(eff) were reduced. The partially detached divertor regime was characterized by an increase in divertor radiated power, a reduction in ion flux to the plate and a large neutral compression ratio. Spectroscopic measurements indicated the formation of a high-density, low-temperature region adjacent to the outer strike point, where substantial increases in the volume recombination rate and C II, CIII emission rates were measured.
C1 [Soukhanovskii, V. A.] Lawrence Livermore Natl Lab, Livermore, CA USA.
[Maingi, R.; Bush, C. E.] Oak Ridge Natl Lab, Oak Ridge, TN USA.
[Gates, D. A.; Menard, J. E.; Paul, S. F.; Roquemore, A. L.; Bell, R. E.; Kaita, R.; Kugel, H. W.; LeBlanc, B. P.; Mueller, D.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
[Raman, R.] Univ Washington, Seattle, WA 98195 USA.
RP Soukhanovskii, VA (reprint author), Lawrence Livermore Natl Lab, Livermore, CA USA.
EM soukhanovskii2@llnl.gov
OI Menard, Jonathan/0000-0003-1292-3286
FU US Department of Energy [DE-AC52-07NA27344, DE-AC02-76CH03073,
DE-AC05-00OR22725, W-7405-ENG-36]
FX The authors thank the entire NSTX Team for technical, engineering and
computer support as well as for plasma, NBI and diagnostic operations.
This work was performed under the auspices of the US Department of
Energy under Contracts DE-AC52-07NA27344, DE-AC02-76CH03073,
DE-AC05-00OR22725 and W-7405-ENG-36.
NR 49
TC 22
Z9 22
U1 1
U2 7
PU INT ATOMIC ENERGY AGENCY
PI VIENNA
PA WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIA
SN 0029-5515
J9 NUCL FUSION
JI Nucl. Fusion
PD SEP
PY 2009
VL 49
IS 9
AR 095025
DI 10.1088/0029-5515/49/9/095025
PG 10
WC Physics, Fluids & Plasmas
SC Physics
GA 528DO
UT WOS:000272421700006
ER
PT J
AU Unterberg, EA
Evans, TE
Maingi, R
Brooks, NH
Fenstermacher, ME
Mordijck, S
Moyer, RA
AF Unterberg, E. A.
Evans, T. E.
Maingi, R.
Brooks, N. H.
Fenstermacher, M. E.
Mordijck, S.
Moyer, R. A.
TI Demonstration of particle exhaust control during ELM suppression by
resonant magnetic perturbations in DIII-D
SO NUCLEAR FUSION
LA English
DT Article
ID EDGE
AB A reduction in plasma electron density ('pump-out') during the application of resonant magnetic perturbations (RMPs) on DIII-D precedes the suppression of edge localized modes (ELMs) in discharges with low (<= 0.2) electron pedestal collisionalities. The magnitude of the density drop near the plasma pedestal can be up to 30% and as low as similar to 2% for discharges with similar applied RMP, and thus motivates further study to determine the cause of the variation. Based on an analysis of the global particle balance and measurements of the D-alpha poloidal distribution, it is shown that the wall inventory can be strongly affected by changing the average triangularity () of the discharge. Specifically, particle balance in = 0.3 discharges shows that the density pump-out was substantially higher than the increase in particle exhaust to the cryo-pumps, i.e. wall pumping was apparently required. On the other hand, particle balance in = 0.5 discharges shows that the density pump-out was offset by an increase in exhaust to the cryo-pumps, i.e. wall pumping was not required. Correspondingly, the D-alpha intensity increased by similar to 50%-100% at = 0.5 during the RMP phase of the discharge when compared with theRMPphase of a = 0.3 discharge. Both of these observations imply a possible increase in the neutral particles in the scrape-off-layer. More significantly, this new result demonstrates density pump-out and ELM suppression without significant wall pumping, which is a desirable feature for long-pulse reactors with saturated walls.
C1 [Unterberg, E. A.] Oak Ridge Inst Sci & Educ, Oak Ridge, TN USA.
[Evans, T. E.; Brooks, N. H.] Gen Atom Co, San Diego, CA 92186 USA.
[Maingi, R.] Oak Ridge Natl Lab, Oak Ridge, TN USA.
[Fenstermacher, M. E.] Lawrence Livermore Natl Lab, Livermore, CA USA.
[Mordijck, S.; Moyer, R. A.] Univ Calif San Diego, La Jolla, CA 92093 USA.
RP Unterberg, EA (reprint author), Oak Ridge Inst Sci & Educ, Oak Ridge, TN USA.
RI Unterberg, Ezekial/F-5240-2016
OI Unterberg, Ezekial/0000-0003-1353-8865
FU US Department of Energy [DE-AC05-06ER23100, DE-FC02-04ER54698,
DE-AC05-00OR22725, DE-AC52-07NA27344, DE-FG02-07ER54917]
FX This work was supported by the US Department of Energy under
DE-AC05-06ER23100, DE-FC02-04ER54698, DE-AC05-00OR22725,
DE-AC52-07NA27344 and DE-FG02-07ER54917. The first author is supported
in part by the Magnetic Fusion Energy Postdoctoral fellowship from the
Oak Ridge Institute for Science and Education.
NR 13
TC 9
Z9 9
U1 0
U2 3
PU INT ATOMIC ENERGY AGENCY
PI VIENNA
PA WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIA
SN 0029-5515
J9 NUCL FUSION
JI Nucl. Fusion
PD SEP
PY 2009
VL 49
IS 9
AR 092001
DI 10.1088/0029-5515/49/9/092001
PG 6
WC Physics, Fluids & Plasmas
SC Physics
GA 483BN
UT WOS:000268936900001
ER
PT J
AU Nishimura, H
Bailey, B
Baptiste, K
Barry, W
Byrne, W
Casey, P
Chin, M
Donahue, R
Duarte, R
Gavidia, A
Jung, JY
Kritcher, M
McKean, P
Mueller, R
Portmann, G
Robin, D
Rodgers, D
Sannibale, F
Scarvie, T
Smith-Baumann, A
Steier, C
Vinco, M
Warwick, T
Wan, WS
Weber, J
Wells, RP
AF Nishimura, Hiroshi
Bailey, Barry
Baptiste, Ken
Barry, Walter
Byrne, Warren
Casey, Patrick
Chin, Michael
Donahue, Richard
Duarte, Robert
Gavidia, Alex
Jung, Jin-Young
Kritcher, Michael
McKean, Patrick
Mueller, Robert
Portmann, Greg
Robin, David
Rodgers, David
Sannibale, Fernando
Scarvie, Tom
Smith-Baumann, Alexis
Steier, Christoph
Vinco, Max
Warwick, Tony
Wan, Weishi
Weber, Jonah
Wells, Russell P.
TI Advanced light source's approach to ensure conditions for safe top-off
operation
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE Synchrotron radiation source; Third generation light source;
Top-off/top-up injection; Radiation safety
AB The purpose of this document is to outline the Advanced Light Source (ALS) approach for preventing a radiation accident scenario on the ALS experimental floor due to top-off operation. The document will describe the potential risks, the analysis, and the resulting specifications for the controls. (c) 2009 Elsevier B.V. All rights reserved.
C1 [Nishimura, Hiroshi; Bailey, Barry; Baptiste, Ken; Barry, Walter; Byrne, Warren; Casey, Patrick; Chin, Michael; Donahue, Richard; Duarte, Robert; Gavidia, Alex; Jung, Jin-Young; Kritcher, Michael; McKean, Patrick; Mueller, Robert; Portmann, Greg; Robin, David; Rodgers, David; Sannibale, Fernando; Scarvie, Tom; Smith-Baumann, Alexis; Steier, Christoph; Vinco, Max; Warwick, Tony; Wan, Weishi; Weber, Jonah; Wells, Russell P.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Robin, D (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, 1 Cyclotron Rd Mail Stop 80R0114, Berkeley, CA 94720 USA.
EM DSRobin@lbl.gov
NR 11
TC 5
Z9 5
U1 0
U2 8
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD SEP 1
PY 2009
VL 608
IS 1
BP 2
EP 18
DI 10.1016/j.nima.2009.05.196
PG 17
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 495BX
UT WOS:000269865500002
ER
PT J
AU Di Mitri, S
Allaria, E
Badano, L
Bontoiu, C
Cornacchia, M
Craievich, P
Danailov, M
De Ninno, G
Diviacco, B
Ferrando, O
Ferry, S
Iazzourene, F
Milton, SV
Penco, G
Spampinati, S
Trovo', M
Veronese, M
Fawley, W
Lidia, S
Penn, G
Qiang, J
Sonnad, KG
Venturini, M
Warnock, R
Zholents, AA
Pogorelov, IV
Borland, M
Bassi, G
Ellison, JA
Heinemann, K
Fiorito, R
Shkvarunets, A
Tobin, JC
AF Di Mitri, S.
Allaria, E.
Badano, L.
Bontoiu, C.
Cornacchia, M.
Craievich, P.
Danailov, M.
De Ninno, G.
Diviacco, B.
Ferrando, O.
Ferry, S.
Iazzourene, F.
Milton, S. V.
Penco, G.
Spampinati, S.
Trovo', M.
Veronese, M.
Fawley, W.
Lidia, S.
Penn, G.
Qiang, J.
Sonnad, K. G.
Venturini, M.
Warnock, R.
Zholents, A. A.
Pogorelov, I. V.
Borland, M.
Bassi, G.
Ellison, J. A.
Heinemann, K.
Fiorito, R.
Shkvarunets, A.
Tobin, J. C.
TI Design and simulation challenges for FERMI@elettra
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE Beam dynamics; Free electron lasers; Simulation
AB FERMI@elettra is a fourth-generation light source user facility under construction at the Elettra Laboratory in Trieste, Italy. The high-quality 1.2 GeV electron beam drives two-seeded Free Electron Lasers (FELs) in the wavelength range 100-10 nm. Wavelength tunability, variable polarization and higher electron beam energies to reach even shorter output wavelengths are also in the machine delivery plan. This paper describes the physics processes that have been modelled to simulate FERMI@elettra and the computer codes used to optimize the machine design. The paper focuses on several design challenges and how these translate into modelling and simulation challenges. (c) 2009 Elsevier B.V. All rights reserved.
C1 [Di Mitri, S.; Allaria, E.; Badano, L.; Bontoiu, C.; Cornacchia, M.; Craievich, P.; Danailov, M.; De Ninno, G.; Diviacco, B.; Ferrando, O.; Ferry, S.; Iazzourene, F.; Milton, S. V.; Penco, G.; Spampinati, S.; Trovo', M.; Veronese, M.] ELETTRA, Trieste, Italy.
[Fawley, W.; Lidia, S.; Penn, G.; Qiang, J.; Sonnad, K. G.; Venturini, M.; Warnock, R.; Zholents, A. A.] LBNL, Berkeley, CA 94720 USA.
[Pogorelov, I. V.] No Illinois Univ, De Kalb, IL 60115 USA.
[Borland, M.] ANL, Argonne, IL 60439 USA.
[Bassi, G.] Cockcroft Inst, Warrington, Cheshire, England.
[Bassi, G.] Univ Liverpool, Liverpool L69 3BX, Merseyside, England.
[Ellison, J. A.; Heinemann, K.] Univ New Mexico, Albuquerque, NM 87131 USA.
[Fiorito, R.; Shkvarunets, A.; Tobin, J. C.] Univ Maryland, College Pk, MD 20742 USA.
RP Di Mitri, S (reprint author), ELETTRA, Trieste, Italy.
EM simone.dimitri@elettra.trieste.it
RI Allaria, Enrico/H-1811-2012;
OI Allaria, Enrico/0000-0001-9570-6361; Danailov,
Miltcho/0000-0002-1888-1331; Penco, Giuseppe/0000-0002-4900-6513
NR 47
TC 18
Z9 18
U1 0
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD SEP 1
PY 2009
VL 608
IS 1
BP 19
EP 27
DI 10.1016/j.nima.2009.06.028
PG 9
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 495BX
UT WOS:000269865500003
ER
PT J
AU Hartemann, FV
AF Hartemann, F. V.
TI Compton scattering overview
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article; Proceedings Paper
CT Workshop on Compton Sources for X-gamma Rays
CY SEP 07-12, 2008
CL Porto Conte, ITALY
SP Ist Nazl Fis Nucl, ICFA
DE Compton scattering; Gamma-ray light source; Free-electron laser
AB An overview of linear and nonlinear Compton scattering is presented, along with a comparison with Thomson scattering Two distinct processes play important roles in the nonlinear regime: multiphoton interactions, leading to the generation of harmonics; and radiation pressure, yielding a downshift of the radiated spectral features. These mechanisms, their influence on the source brightness, and different modeling strategies are also briefly discussed. (C) 2009 Elsevier B.V. All rights reserved.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Hartemann, FV (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
EM hartemann1@llnl.gov
NR 13
TC 10
Z9 10
U1 0
U2 14
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD SEP 1
PY 2009
VL 608
IS 1
BP S1
EP S6
DI 10.1016/j.nima.2009.05.167
PG 6
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 514CO
UT WOS:000271371600002
ER
PT J
AU Williams, O
Andonian, G
Babzien, M
Hemsing, E
Kusche, K
Park, J
Pogorelsky, I
Priebe, G
Rosenzweig, J
Yakimenko, V
AF Williams, O.
Andonian, G.
Babzien, M.
Hemsing, E.
Kusche, K.
Park, J.
Pogorelsky, I.
Priebe, G.
Rosenzweig, J.
Yakimenko, V.
TI Characterization results of the BNL ATF Compton X-ray source using
K-edge absorbing foils
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article; Proceedings Paper
CT Workshop on Compton Sources for X-gamma Rays
CY SEP 07-12, 2008
CL Porto Conte, ITALY
SP Ist Nazl Fis Nucl, ICFA
DE Compton scattering; High-brightness electron beams; Radiation sources
AB Spectral and angular information of inverse Compton sources is shown to be obtainable using only an X-ray imaging device and various foils with K-edges in keV energy range. Beam parameters can be chosen such that on-axis photons are above the K-edge for a given material, where absorption is very strong and there is relatively zero transmission. Photons observed off-axis are red-shifted and fall below the K-edge, therefore being transmitted and creating a "ring" pattern in the ideal case. Starting with photon energies below the K-edge and aperturing for small angles on-axis allows one to scan the electron beam to higher energy until all scattered photons are above the K-edge and absorbed, thus presenting a method of bandwidth measurement. Using these methods, we present experimental results of the bandwidth and double differential spectrum (DDS) for angle and energy of Compton photons generated at the Brookhaven National Laboratory Accelerator Test Facility (BNL ATF). (C) 2009 Elsevier B.V. All rights reserved.
C1 [Williams, O.; Andonian, G.; Hemsing, E.; Rosenzweig, J.] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA.
[Babzien, M.; Kusche, K.; Park, J.; Pogorelsky, I.; Yakimenko, V.] Brookhaven Natl Lab, Accelerator Test Facil, Upton, NY 11973 USA.
[Priebe, G.] Sci & Technol Facil Council, Daresbury Lab, Warrington WA4 4AD, Cheshire, England.
RP Williams, O (reprint author), Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA.
EM obw@ucla.edu
RI Priebe, Gerd/C-6330-2008
OI Priebe, Gerd/0000-0002-9880-8715
NR 8
TC 14
Z9 15
U1 1
U2 4
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-9002
J9 NUCL INSTRUM METH A
JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc.
Equip.
PD SEP 1
PY 2009
VL 608
IS 1
BP S18
EP S22
DI 10.1016/j.nima.2009.05.166
PG 5
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 514CO
UT WOS:000271371600006
ER
PT J
AU Carter, J
Fu, EG
Martin, M
Xie, GQ
Zhang, X
Wang, YQ
Wijesundera, D
Wang, XM
Chu, WK
McDeavitt, SM
Shao, L
AF Carter, Jesse
Fu, E. G.
Martin, Michael
Xie, Guoqiang
Zhang, X.
Wang, Y. Q.
Wijesundera, D.
Wang, X. M.
Chu, Wei-Kan
McDeavitt, Sean M.
Shao, Lin
TI Ion irradiation induced nanocrystal formation in amorphous
Zr55Cu30Al10Ni5 alloy
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM
INTERACTIONS WITH MATERIALS AND ATOMS
LA English
DT Article
DE Metallic glass; Ion irradiation; Crystallization
ID BULK METALLIC GLASSES; ELECTRON-IRRADIATION; MECHANICAL-PROPERTIES;
THERMAL CRYSTALLIZATION; SUPERCOOLED LIQUID; ZIRCONIUM ALLOYS;
TEMPERATURE; BEHAVIOR; PHASE; TRANSFORMATION
AB Ion irradiation can be used to induce partial crystallization in metallic glasses to improve their surface properties. We investigated the microstructural changes in ribbon Zr55Cu30Al10Ni5 metallic glass after 1 MeV Cu-ion irradiation at room temperature, to a fluence of 1.0 x 10(16) cm(-2). In contrast to a recent report by others that there was no irradiation induced crystallization in the same alloy [S. Nagata, S. Higashi, B. Tsuchiya, K. Toh, T. Shikama, K. Takahiro, K. Ozaki, K. Kawatusra, S. Yamamoto, A. Inouye, Nucl. Instr. and Meth. B 257 (2007) 420], we have observed nanocrystals in the as-irradiated samples. Two groups of nanocrystals, one with diameters of 5-10 nm and another with diameters of 50-100 nm are observed by using high resolution transmission electron microscopy. Experimentally measured planar spacings (d-values) agree with the expectations for Cu10Zr7, NiZr2 and CuZr2 phases. We further discussed the possibility to form a substitutional intermetallic (NixCu1-x)Zr-2 phase. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Carter, Jesse; Martin, Michael; McDeavitt, Sean M.; Shao, Lin] Texas A&M Univ, Dept Nucl Engn, College Stn, TX 77843 USA.
[Fu, E. G.; Zhang, X.] Texas A&M Univ, Dept Mech Engn, College Stn, TX 77843 USA.
[Xie, Guoqiang] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan.
[Wang, Y. Q.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Wijesundera, D.; Wang, X. M.; Chu, Wei-Kan] Univ Houston, Texas Ctr Superconduct, Houston, TX 77204 USA.
[Wijesundera, D.; Wang, X. M.; Chu, Wei-Kan] Univ Houston, Dept Phys, Houston, TX 77204 USA.
RP Shao, L (reprint author), Texas A&M Univ, Dept Nucl Engn, College Stn, TX 77843 USA.
EM lshao@mailaps.org
RI Xie, Guoqiang/A-8619-2011; Wijesundera, Dharshana/G-3363-2012; Zhang,
Xinghang/H-6764-2013
OI Wijesundera, Dharshana/0000-0001-5482-8768; Zhang,
Xinghang/0000-0002-8380-8667
FU Siemens Power Generation Emerging Technologies; NRC; DOE
[DE-FC07-05ID14657, DE-FG02-05ER46208]; State of Texas through Texas
Center for Superconductivity at University of Houston
FX This work was financially supported by the University Embryonic
Technologies Program from Siemens Power Generation Emerging
Technologies. L. Shao would like to acknowledge the support from the NRC
Early Career Development Grant. X. Zhang acknowledges the support by DOE
under grant number DE-FC07-05ID14657. This work was performed, in part,
at the Center for Integrated Nanotechnologies, a DOE-supported user
facility. The University of Houston group is supported from the State of
Texas through Texas Center for Superconductivity at University of
Houston, and through the DOE under Grant Number DE-FG02-05ER46208.
NR 39
TC 18
Z9 19
U1 4
U2 21
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-583X
EI 1872-9584
J9 NUCL INSTRUM METH B
JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms
PD SEP 1
PY 2009
VL 267
IS 17
BP 2827
EP 2831
DI 10.1016/j.nimb.2009.05.068
PG 5
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Atomic, Molecular & Chemical; Physics, Nuclear
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 498RU
UT WOS:000270161600006
ER
PT J
AU Usov, IO
Koleske, D
Sickafus, KE
AF Usov, I. O.
Koleske, D.
Sickafus, K. E.
TI Ion implantation damage recovery in GaN
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM
INTERACTIONS WITH MATERIALS AND ATOMS
LA English
DT Article
DE Ion implantation; Gallium nitride; Damage annealing
ID THERMAL-STABILITY; TEMPERATURE; NITRIDE
AB We present a method of ion implantation doping of GaN, which permits reduced residual damage. The method consists of performing implantation in several steps with annealing between each step. Residual damage was analyzed by RBS/channeling and compared to a traditional implantation and annealing procedure. Better lattice recovery is clearly achieved using the alternating implantation and annealing approach. We attribute the efficient recovery to smaller damage amounts introduced during each implantation step, as well as to suppression of secondary defect formation. (C) 2009 Published by Elsevier B.V.
C1 [Usov, I. O.; Sickafus, K. E.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Koleske, D.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Usov, IO (reprint author), Los Alamos Natl Lab, Mailstop K763, Los Alamos, NM 87544 USA.
EM iusov@lanl.gov
FU US Department of Energy Office of Basic Energy Sciences, Division of
Materials Sciences and Engineering
FX This work was supported by the US Department of Energy Office of Basic
Energy Sciences, Division of Materials Sciences and Engineering.
NR 20
TC 2
Z9 2
U1 1
U2 5
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0168-583X
J9 NUCL INSTRUM METH B
JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms
PD SEP 1
PY 2009
VL 267
IS 17
BP 2962
EP 2964
DI 10.1016/j.nimb.2009.06.098
PG 3
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Atomic, Molecular & Chemical; Physics, Nuclear
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 498RU
UT WOS:000270161600027
ER
PT J
AU Gelis, F
Lappi, T
McLerran, L
AF Gelis, F.
Lappi, T.
McLerran, L.
TI Glittering Glasmas
SO NUCLEAR PHYSICS A
LA English
DT Article
DE Glasma; Multiplicity distribution
ID GLUON DISTRIBUTION-FUNCTIONS; NUCLEUS-NUCLEUS COLLISIONS; MULTIPLICITY
DISTRIBUTIONS; TRANSVERSE-MOMENTUM; SMALL-X; ENERGY; CONDENSATE;
EVOLUTION; FIELD; UNIVERSALITY
AB We compute the production of gluons from Glasma color flux tubes. We calculate the probability distribution of gluon multiplicities arising from the distribution of color electric and color magnetic flux tubes found in the Glasma. We show that the result corresponds to the negative binomial probability distribution observed in experiments. The parameter k that characterizes this distribution is proportional to the number of colors N(c)(2) - 1 and to the number of flux tubes. For one gluon color and one flux tube, the multiplicity distribution is close to a Bose-Einstein distribution. We call this decay process "Glitter", it term that is explained below. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Gelis, F.; Lappi, T.; McLerran, L.] CEA DSM Saclay, Inst Phys Theor, F-91191 Gif Sur Yvette, France.
[McLerran, L.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
[McLerran, L.] Brookhaven Natl Lab, Riken Brookhaven Ctr, Upton, NY 11973 USA.
RP Lappi, T (reprint author), CEA DSM Saclay, Inst Phys Theor, Bat 774, F-91191 Gif Sur Yvette, France.
EM tuomas.lappi@cea.fr
FU Theoretical Physics Division at CEA-Saclay; DOE [DE-AC02-98CH10886];
Academy of Finland [126604]; Agence Nationale de la Recherche
[ANR-06-BLAN-0285-01]
FX The authors gratefully acknowledge conversations with Raju Venugopalan.
L. McLerran was supported in part by the Theoretical Physics Division at
CEA-Saclay, and this work is a product of the stimulating intellectual
atmosphere there. The research of L. McLerran is supported under DOE
Contract No. DE-AC02-98CH10886. T. Lappi is supported by the Academy of
Finland, project 126604. F. Gelis is supported in part by Agence
Nationale de la Recherche via the programme ANR-06-BLAN-0285-01.
NR 56
TC 70
Z9 70
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD SEP 1
PY 2009
VL 828
IS 1-2
BP 149
EP 160
DI 10.1016/j.nuclphysa.2009.07.004
PG 12
WC Physics, Nuclear
SC Physics
GA 495PT
UT WOS:000269906700010
ER
PT J
AU Dusling, K
Fernandez-Fraile, D
Venugopalan, R
AF Dusling, Kevin
Fernandez-Fraile, Daniel
Venugopalan, Raju
TI Three-particle correlation from Glasma flux tubes
SO NUCLEAR PHYSICS A
LA English
DT Article
DE Color glass condensate; Glasma; Flux tubes; Radial flow; Ridge
ID HEAVY-ION COLLISIONS; GLUON DISTRIBUTION-FUNCTIONS; NUCLEAR COLLISIONS;
ANGULAR-CORRELATIONS; TRANSVERSE-MOMENTUM; MODEL; JET; CONDENSATE;
2-PARTICLE; SCATTERING
AB We compute three particle correlations in the Glasma flux tube model of high energy heavy ion collisions. We obtain a simple geometrical picture of these correlations; when convoluted with final state radial now, it results in distinct predictions for the near side three particle correlation in central heavy ion collisions. Published by Elsevier B.V.
C1 [Dusling, Kevin; Venugopalan, Raju] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
[Fernandez-Fraile, Daniel] Univ Complutense, Dept Fis Teor 2, E-28040 Madrid, Spain.
RP Dusling, K (reprint author), Brookhaven Natl Lab, Dept Phys, Bldg 510A, Upton, NY 11973 USA.
EM kdusling@quark.phy.bnl.gov; danfer@fis.ucm.es; raju@bnl.gov
OI Dusling, Kevin/0000-0001-9598-0416
FU DOE [DE-AC02-98CH10886]; Spanish research [FPA2004-02602, FIS2008-01323,
UCM-CAM 910309, FPA2007-29115-E]; FPI programme [BES-2005-6726]
FX We would like to thank Adrian Dumitru, Sean Gavin, Francois Gelis,
Tuomas Lappi, Ron Longacre, Larry McLerran, Lanny Ray, Claude Pruneau,
Paul Sorensen, Peter Steinberg, Jun Takahashi and Fuqian Wang for very
useful discussions. This manuscript was authored under DOE Contract No.
#DE-AC02-98CH10886. D.F.F. thanks the hospitality of the Nuclear Theory
Group of BNL during his visit in 2008 when part of this work carried
out. He also acknowledges the financial support from the Spanish
research projects FPA2004-02602, FIS2008-01323, UCM-CAM 910309,
FPA2007-29115-E and from the FPI programme (BES-2005-6726).
NR 63
TC 33
Z9 33
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0375-9474
J9 NUCL PHYS A
JI Nucl. Phys. A
PD SEP 1
PY 2009
VL 828
IS 1-2
BP 161
EP 177
DI 10.1016/j.nuclphysa.2009.06.017
PG 17
WC Physics, Nuclear
SC Physics
GA 495PT
UT WOS:000269906700011
ER
PT J
AU Favorite, JA
Bledsoe, KC
Ketcheson, DI
AF Favorite, Jeffrey A.
Bledsoe, Keith C.
Ketcheson, David I.
TI Surface and Volume Integrals of Uncollided Adjoint Fluxes and
Forward-Adjoint Flux Products
SO NUCLEAR SCIENCE AND ENGINEERING
LA English
DT Article
AB Ray analysis techniques are standard for computing the uncollided component of a detector response to radiation. In this paper, uncollided adjoint flux integrals and forward-adjoint inner product integrals in volumes and on surfaces are derived for general geometries. In numerical test problems using a one-dimensional sphere and a two-dimensional (r-z) cylinder, deterministic and stochastic evaluations of the integrals yielded the same results. A semianalytic benchmark for the adjoint flux integral on a cylindrical surface is also used.
C1 [Favorite, Jeffrey A.; Bledsoe, Keith C.] Los Alamos Natl Lab, Appl Phys Div 10, Los Alamos, NM 87545 USA.
[Ketcheson, David I.] Univ Washington, Dept Appl Math, Seattle, WA 98195 USA.
RP Favorite, JA (reprint author), Los Alamos Natl Lab, Appl Phys Div 10, MS P365, Los Alamos, NM 87545 USA.
EM fave@lanl.gov
RI Ketcheson, David/K-5949-2013;
OI Ketcheson, David/0000-0002-1212-126X; Bledsoe, Keith/0000-0002-6627-5344
NR 10
TC 7
Z9 7
U1 0
U2 1
PU AMER NUCLEAR SOC
PI LA GRANGE PK
PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA
SN 0029-5639
J9 NUCL SCI ENG
JI Nucl. Sci. Eng.
PD SEP
PY 2009
VL 163
IS 1
BP 73
EP 84
PG 12
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 491GI
UT WOS:000269566100006
ER
PT J
AU Schirmers, FG
Davis, A
Wooten, HO
Dudziak, DJ
Yim, MS
McNelis, D
AF Schirmers, Fritz G.
Davis, Adam
Wooten, H. Omar
Dudziak, Donald J.
Yim, Man-Sung
McNelis, David
TI CALCULATION OF PHOTON EXPOSURE AND AMBIENT DOSE SLANT-PATH BUILDUP
FACTORS FOR RADIOLOGICAL ASSESSMENT
SO NUCLEAR TECHNOLOGY
LA English
DT Article
DE photon exposure; buildup factors; ambient dose
ID TRANSPORT CALCULATIONS; SHIELDS; IRON; LEAD; BREMSSTRAHLUNG; INCOHERENT;
COHERENT; CONCRETE; ALUMINUM; WATER
AB Slant-path photon buildup factors for nine radiation shielding materials (air, aluminum, concrete, iron, lead, leaded glass, polyethylene, stainless steel, and water) are calculated with the most recent cross-section data available using Monte Carlo and discrete ordinates methods. Discrete ordinates calculations use a 244-group energy structure based on previous research at Los Alamos National Laboratory (LANL) and focus on the effects of group widths in multigroup calculations for low-energy photons. Buildup-factor calculations in discrete ordinates benefit from coupled photon/electron cross sections to account for secondary photon effects. Also, ambient dose equivalent buildup factors were analyzed at lower energies where corresponding response functions do not exist in the literature. The results of these studies are directly applicable to radiation safety at LANL, where the dose-modeling code PANDEMONIUM is used to estimate worker dose in plutonium-handling facilities. Buildup factors determined in this work will be used to enhance the codes modeling capabilities but also should be of general interest to the radiation shielding community.
C1 [Schirmers, Fritz G.; Davis, Adam; Dudziak, Donald J.; Yim, Man-Sung; McNelis, David] N Carolina State Univ, Dept Nucl Engn, Raleigh, NC 27695 USA.
[Schirmers, Fritz G.; Davis, Adam; Dudziak, Donald J.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Wooten, H. Omar] Washington Univ, Sch Med, Dept Radiat Oncol, St Louis, MO 63130 USA.
RP Schirmers, FG (reprint author), N Carolina State Univ, Dept Nucl Engn, Box 7909, Raleigh, NC 27695 USA.
EM f_schirmers@yahoo.com
RI Yim, Man-Sung/G-2720-2011
NR 31
TC 1
Z9 1
U1 0
U2 0
PU AMER NUCLEAR SOC
PI LA GRANGE PK
PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA
SN 0029-5450
J9 NUCL TECHNOL
JI Nucl. Technol.
PD SEP
PY 2009
VL 167
IS 3
BP 395
EP 409
PG 15
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 486YB
UT WOS:000269235800006
ER
PT J
AU Rothman, AB
Graczyk, DG
AF Rothman, A. B.
Graczyk, D. G.
TI AMMONIUM POLYURANATE PRECIPITATION FROM FLUORIDE SOLUTIONS: AN
EXPERIMENTAL STUDY OF THE UO3-HF-NH3-H2O SYSTEM AS APPLIED IN UF6
PROCESSING
SO NUCLEAR TECHNOLOGY
LA English
DT Article
DE UF6 chemistry; diuranate process; uranyl fluorides
ID URANATES; NH3-UO3-H2O
AB In the ammonium diuranate (ADU) process, UF6 is reacted with water, and the acidic solution of uranyl fluoride is treated with aqueous ammonia to precipitate ammonium polyuranate for subsequent reduction to UO2 and production of fuel pellets for commercial nuclear reactors. Our experiments simulated adding aqueous ammonia to the reaction products of UF6 and water in typical ADU processes. Chemical and X-ray diffraction analysis of products from the experiments are consistent with postulated chemical equilibria in which solids with structures close to that of ammonium polyuranate are formed from co-precipitation of the NH4+(aq) cation with (previously unreported) anions of the form UO2F3-x(OH)(x)(-)(aq). More efficient separations of solid products were obtained at NH4OH:UF6 ratios of 19 or greater, with x closer to the value of 3 for the hypothetical formation of pure ammonium polyuranate. Supplementary experiments in the current study and a previous study in our laboratory indicated that nominal uranium concentrations of 90 mg/l in the filtrate resulting from such separations could be reduced to microgram per liter levels by batch mixing a 1-to-2.5 aqueous diluate of the filtrate with the Diphonix (R) ion exchange resin. Our study further demonstrated that reaction of the purified NH4OH-NH4F diluate with aqueous Ca(OH)(2) at 80 to 90 degrees C could produce essentially uranium-free CaF2 and an ammonia distillate, as useful waste-conversion end products from a modified ADU process.
C1 [Rothman, A. B.; Graczyk, D. G.] Argonne Natl Lab, Argonne, IL 60439 USA.
RP Rothman, AB (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM abrothman@anl.gov
NR 12
TC 2
Z9 2
U1 0
U2 4
PU AMER NUCLEAR SOC
PI LA GRANGE PK
PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA
SN 0029-5450
J9 NUCL TECHNOL
JI Nucl. Technol.
PD SEP
PY 2009
VL 167
IS 3
BP 410
EP 420
PG 11
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 486YB
UT WOS:000269235800007
ER
PT J
AU Li, J
Tu, XM
AF Li, Jing
Tu, Xuemin
TI Convergence analysis of a balancing domain decomposition method for
solving a class of indefinite linear systems
SO NUMERICAL LINEAR ALGEBRA WITH APPLICATIONS
LA English
DT Article
DE domain decomposition; FETI; BDDC; indefinite; Helmholtz; nonconforming
ID PRIMAL FETI METHODS; INCOMPRESSIBLE STOKES EQUATIONS; HARMONIC MAXWELL
EQUATIONS; ELLIPTIC PROBLEMS; SUBSTRUCTURING METHODS; STRUCTURAL
MECHANICS; ITERATIVE SOLUTION; BDDC; DP; PRECONDITIONER
AB A variant of balancing domain decomposition method by constraints (BDDC) is proposed for solving a class of indefinite systems of linear equations of the form (K-sigma(2)M)u=f, which arise from solving eigenvalue problems when an inverse shifted method is used and also from the finite element discretization of Helmholtz equations. Here, both K and M are symmetric positive definite. The proposed BDDC method is closely related to the previous dual-primal finite element tearing and interconnecting method (FETI-DP) for solving this type of problems (Appl. Numer Math. 2005; 54:150-166), where a coarse level problem containing certain free-space solutions of the inherent homogeneous partial differential equation is used in the algorithm to accelerate the convergence. Under the condition that the diameters of the subdomains are small enough, the convergence rate of the proposed algorithm is established, which depends polylogarithmically on the dimension of the individual subdomain problems and which improves with a decrease of the subdomain diameters. These results are supported by numerical experiments of solving a two-dimensional problem. Copyright (C) 2009 John Wiley & Sons, Ltd.
C1 [Li, Jing] Kent State Univ, Dept Math Sci, Kent, OH 44242 USA.
[Tu, Xuemin] Univ Calif Berkeley, Dept Math, Berkeley, CA 94720 USA.
[Tu, Xuemin] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Li, J (reprint author), Kent State Univ, Dept Math Sci, Kent, OH 44242 USA.
EM li@math.kent.edu
RI Tu, Xuemin/D-9928-2011
FU National Science Foundation [DMS-0612574]; U.S. Department of Energy
[DE-FC02-01ER25482, DE-AC02-05CH11231]
FX Contract/grant sponsor: U.S. Department of Energy; contract/grant
numbers: DE-FC02-01ER25482, DE-AC02-05CH11231
NR 55
TC 8
Z9 8
U1 0
U2 0
PU JOHN WILEY & SONS LTD
PI CHICHESTER
PA THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND
SN 1070-5325
J9 NUMER LINEAR ALGEBR
JI Numer. Linear Algebr. Appl.
PD SEP
PY 2009
VL 16
IS 9
BP 745
EP 773
DI 10.1002/nla.639
PG 29
WC Mathematics, Applied; Mathematics
SC Mathematics
GA 496JQ
UT WOS:000269967700003
ER
PT J
AU da Veiga, LB
Lipnikov, K
Manzini, G
AF da Veiga, L. Beirao
Lipnikov, K.
Manzini, G.
TI Convergence analysis of the high-order mimetic finite difference method
SO NUMERISCHE MATHEMATIK
LA English
DT Article
ID DIFFUSION-PROBLEMS; POLYHEDRAL MESHES; ELLIPTIC PROBLEMS; UNSTRUCTURED
MESHES; ERROR ESTIMATOR; APPROXIMATIONS; ALGORITHM; OPERATORS; SCHEME;
GRIDS
AB We prove second-order convergence of the conservative variable and its flux in the high-order MFD method. The convergence results are proved for unstructured polyhedral meshes and full tensor diffusion coefficients. For the case of non-constant coefficients, we also develop a new family of high-order MFD methods. Theoretical result are confirmed through numerical experiments.
C1 [da Veiga, L. Beirao] Univ Milan, Dipartimento Matemat F Enriques, I-20133 Milan, Italy.
[Lipnikov, K.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Manzini, G.] CNR, IMATI, I-27100 Pavia, Italy.
RP da Veiga, LB (reprint author), Univ Milan, Dipartimento Matemat F Enriques, Via Saldini 50, I-20133 Milan, Italy.
EM lourenco.beirao@unimi.it; lipnikov@lanl.gov; Marco.Manzini@imati.cnr.it
RI Beirao da Veiga, Lourenco/A-8080-2010;
OI Manzini, Gianmarco/0000-0003-3626-3112
FU DOE Office of Science Advanced Scientific Computing Research (ASCR)
FX The work of K. Lipnikov was supported by the DOE Office of Science
Advanced Scientific Computing Research (ASCR) Program in Applied
Mathematics Research.
NR 30
TC 35
Z9 35
U1 0
U2 5
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0029-599X
J9 NUMER MATH
JI Numer. Math.
PD SEP
PY 2009
VL 113
IS 3
BP 325
EP 356
DI 10.1007/s00211-009-0234-6
PG 32
WC Mathematics, Applied
SC Mathematics
GA 483YW
UT WOS:000269010600001
ER
PT J
AU Morello, MJ
AF Morello, Michael J.
TI Observation of new charmless decays of bottom hadrons
SO NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA B-BASIC TOPICS IN PHYSICS
LA English
DT Article
ID ELECTROMAGNETIC CALORIMETER; QCD FACTORIZATION; B-DECAY; CDF; PHYSICS
AB We search for new charmless decays of neutral b-hadrons to pairs of charged hadrons with the upgraded Collider Detector at the Fermi lab Tevatron. Using a data sample corresponding to 1 fb(-1) of integrated luminosity, we report the first observation of the B-s(0) -> K-pi(+) decay, with a significance of 8.2 sigma, and measure B(B-s(0) -> K-pi(+)) = (5.0 +/- 0.7 (stat.) +/- 0.8 (syst.)) x 10(-6). We also report the first observation of charmless b-baryon decays in the channels A(b)(0) -> p pi(-) and A(0)(b) -> pK(-) with significances of 6.0 sigma and 11.5 sigma respectively, and we measure B(A(b)(0) -> p pi(-)) = (3.5 +/- 0.6 (stat.) +/- 0.9 (syst.)) x 10(-6) and B(A(b)(0) -> pK(-)) = (5.6 +/- 0.8 (stat.) +/- 1.5 (syst.)) x 10(-6). No evidence is found for the decays B-0 -> K+K- and B-s(0) -> and we set an improved upper limit B(B-s(0) -> pi(+)pi(-)) < 1.2 x 10(-6) at the 90% confidence level. All quoted branching fractions are measured using B(B-0 -> K+K-) as a reference.
C1 [Morello, Michael J.] Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
RP Morello, MJ (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
EM morello@fnal.gov
NR 48
TC 0
Z9 0
U1 0
U2 0
PU SOC ITALIANA FISICA
PI BOLOGNA
PA VIA SARAGOZZA, 12, I-40123 BOLOGNA, ITALY
SN 2037-4895
EI 1594-9982
J9 NUOVO CIM B
JI Nouvo Cimento Soc. Ital. Fis. B-Basic Top. Phys.
PD SEP
PY 2009
VL 124
IS 9
BP 987
EP 1001
DI 10.1393/ncb/i2010-10821-7
PG 15
WC Physics, Multidisciplinary
SC Physics
GA 585XF
UT WOS:000276863000008
ER
PT J
AU Siri-Tarino, PW
Williams, PT
Fernstrom, HS
Rawlings, RS
Krauss, RM
AF Siri-Tarino, Patty W.
Williams, Paul T.
Fernstrom, Harriet S.
Rawlings, Robin S.
Krauss, Ronald M.
TI Reversal of Small, Dense LDL Subclass Phenotype by Normalization of
Adiposity
SO OBESITY
LA English
DT Article
ID CORONARY HEART-DISEASE; LIPOPROTEIN CHOLESTEROL LEVELS; LONG-DISTANCE
RUNNERS; SET-POINT THEORY; WEIGHT-LOSS; PARTICLE-SIZE; LOW-FAT;
ATHEROGENIC DYSLIPIDEMIA; CARDIOVASCULAR-DISEASE; INSULIN-RESISTANCE
AB Excess adiposity and high-carbohydrate diets have been associated with an atherogenic lipoprotein phenotype (ALP) characterized by increased concentrations of small, dense low-density lipoprotein (LDL) particles (pattern B). We tested whether weight loss and normalization of adiposity could reverse ALP in overweight men with pattern B. After consuming a moderate-carbohydrate, high-fat diet for 3 weeks, pattern B and nonpattern B (pattern A) men were randomized to a weight loss (n = 60 and n = 36, respectively) or control weight-stable arm (n = 20 and n = 17, respectively). Men in the weight loss arm consumed similar to 1,000 fewer calories per day over 9 weeks to induce an average similar to 9kg weight loss. In the control group, weight stability was maintained for 4 weeks after randomization. Weight loss led to the conversion of pattern B to pattern A in 58% of baseline pattern B men. Among men who achieved BMIs of <25kg/m(2) (62% of pattern B men vs. 83% of pattern A men), 81% of pattern B men converted to pattern A. Weight loss was associated with a significantly greater decrease in small, dense LDL subclass 3b in pattern B relative to pattern A men. The lipoprotein profiles of pattern A men who converted from pattern B were comparable to those of men with pattern A at baseline. Conversion of LDL subclass pattern B to pattern A and reversal of ALP can be achieved in a high proportion of overweight men by normalization of adiposity.
C1 [Siri-Tarino, Patty W.; Fernstrom, Harriet S.; Rawlings, Robin S.; Krauss, Ronald M.] Childrens Hosp Oakland, Res Inst, Oakland, CA 94609 USA.
[Williams, Paul T.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Dept Genome Sci, Berkeley, CA 94720 USA.
RP Krauss, RM (reprint author), Childrens Hosp Oakland, Res Inst, Oakland, CA 94609 USA.
EM rkrauss@chori.org
FU National Dairy Council [UL1 RR024131-01]; National Center for Research
Resources (NCRR); National Institutes of Health (NIH)
FX We thank Patricia J. Blanche, Kathleen Wojnoonski and the staff of the
CHORI Lipoprotein Analysis Laboratory for laboratory measurements; Linda
Abe for data management; the staff of the Cholesterol Research Center
for participant recruitment and clinical study assistance; and Ellen
Fung for assistance with dual-energy X-ray absorptiometry measurements.
This research was supported by the National Dairy Council and was made
possible by Grant Number UL1 RR024131-01 from the National Center for
Research Resources (NCRR), a component of the National Institutes of
Health (NIH), and NIH Roadmap for Medical Research. Its contents are
solely the responsibility of the authors and do not necessarily
represent the official view of NCRR or NIH. Information on NCRR is
available at http://www.ncrr.nih.gov. Information on Re-engineering the
Clinical Research Enterprise can be obtained from http://nihroadmap.
nih.gov/clinicalresearch/overview-translational.asp.
NR 33
TC 19
Z9 19
U1 0
U2 2
PU NATURE PUBLISHING GROUP
PI NEW YORK
PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA
SN 1930-7381
J9 OBESITY
JI Obesity
PD SEP
PY 2009
VL 17
IS 9
BP 1768
EP 1775
DI 10.1038/oby.2009.146
PG 8
WC Endocrinology & Metabolism; Nutrition & Dietetics
SC Endocrinology & Metabolism; Nutrition & Dietetics
GA 490TG
UT WOS:000269527200020
PM 19498345
ER
PT J
AU Leefer, N
Cingoz, A
Budker, D
AF Leefer, Nathan
Cingoez, Arman
Budker, Dmitry
TI Measurement of hyperfine structure and isotope shifts in the Dy 421 nm
transition
SO OPTICS LETTERS
LA English
DT Article
ID ATOMIC DYSPROSIUM; STATES
AB A measurement of the hyperfine coefficients and isotope shifts for the atomic dysprosium 421.291 nm transition (4f(10)6s(2), J=8 -> 4f(10)6s6p, J=9) using atomic beam laser-induced fluorescence spectroscopy is presented. A King plot analysis is performed to determine a specific mass shift of delta nu(164-162)(sms) = 11(7) MHz for the 421 nm transition, confirming the pure 4f(10)6s6p configuration of the excited state. This transition is currently being explored for laser cooling of an atomic beam of dysprosium used in a search for a temporal variation of the fine-structure constant. (C) 2009 Optical Society of America
C1 [Budker, Dmitry] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
[Leefer, Nathan; Cingoez, Arman; Budker, Dmitry] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
RP Budker, D (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM budker@berkeley.edu
RI Budker, Dmitry/F-7580-2016
OI Leefer, Nathan/0000-0002-4940-8432; Budker, Dmitry/0000-0002-7356-4814
FU Foundational Questions Institute (fqxi.org); UC Berkeley Committee on
Research
FX This work was supported by the Foundational Questions Institute
(fqxi.org) and the UC Berkeley Committee on Research.
NR 20
TC 11
Z9 11
U1 0
U2 5
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0146-9592
J9 OPT LETT
JI Opt. Lett.
PD SEP 1
PY 2009
VL 34
IS 17
BP 2548
EP 2550
PG 3
WC Optics
SC Optics
GA 498CO
UT WOS:000270114400002
PM 19724485
ER
PT J
AU Yellampalle, B
Kim, K
Taylor, AJ
AF Yellampalle, Balakishore
Kim, KiYong
Taylor, Antoinette J.
TI Amplitude ambiguities in second-harmonic-generation frequency-resolved
optical gating: reply to comment
SO OPTICS LETTERS
LA English
DT Article
ID ULTRASHORT LASER-PULSES
AB The error calculations in our Erratum [ Opt. Lett. 33, 2854 ( 2008)] are correct and consistent with the numbers presented in the Comment [ Opt. Lett. 34, 2602 ( 2009)] on our Letter [ Opt. Lett. 32, 3558 ( 2007)]. However, we still find that the pulses in Fig. 3 pose a problem in correctly reconstructing the electric field shape. (C) 2009 Optical Society of America
C1 [Yellampalle, Balakishore; Taylor, Antoinette J.] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA.
[Kim, KiYong] Univ Maryland, Dept Phys, College Pk, MD 20742 USA.
[Kim, KiYong] Univ Maryland, IREAP, College Pk, MD 20742 USA.
RP Yellampalle, B (reprint author), Los Alamos Natl Lab, Ctr Integrated Nanotechnol, POB 1663, Los Alamos, NM 87545 USA.
EM balakishorey@gmail.com
NR 6
TC 0
Z9 0
U1 1
U2 5
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0146-9592
J9 OPT LETT
JI Opt. Lett.
PD SEP 1
PY 2009
VL 34
IS 17
BP 2603
EP 2603
PG 1
WC Optics
SC Optics
GA 498CO
UT WOS:000270114400021
ER
PT J
AU Soderlund, MJ
Ponsoda, JJMI
Koplow, JP
Honkanen, S
AF Soderlund, Mikko J.
Montiel i Ponsoda, Joan J.
Koplow, Jeffrey P.
Honkanen, Seppo
TI Thermal bleaching of photodarkening-induced loss in ytterbium-doped
fibers
SO OPTICS LETTERS
LA English
DT Article
ID SILICA FIBERS; POWER; GLASS
AB We study the thermal bleaching process of photodarkening-induced loss in ytterbium-doped fibers. The observed power-law time dependence of the normalized absorption coefficient is well represented by the thermal decay model of Erdogan et al. [J. Appl. Phys. 76, 73 (1994)]. Using this model, we derive the activation energy associated with thermal recovery of the induced loss to prephotodarkened state. For the studied commercial 20 mu m core diameter large-mode-area fiber, the energy distribution consists of a single peak, located at 1.32 eV with a FWHM of similar to 0.31 eV. The results presented are of particular importance to understanding photodarkening and bleaching processes in high-power fiber lasers. (C) 2009 Optical Society of America
C1 [Soderlund, Mikko J.; Montiel i Ponsoda, Joan J.; Honkanen, Seppo] Helsinki Univ Technol, FIN-02015 Helsinki, Finland.
[Koplow, Jeffrey P.] Sandia Natl Labs, Livermore, CA 94551 USA.
RP Soderlund, MJ (reprint author), Helsinki Univ Technol, Tietotie 3, FIN-02015 Helsinki, Finland.
EM mikko.soderlund@tkk.fi
FU Finnish Funding Agency for Technology and Innovations (TEKES),; nLIGHT;
Beneq
FX The Finnish Funding Agency for Technology and Innovations (TEKES),
nLIGHT, and Beneq are gratefully acknowledged for their financial
support.
NR 13
TC 13
Z9 13
U1 0
U2 1
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0146-9592
J9 OPT LETT
JI Opt. Lett.
PD SEP 1
PY 2009
VL 34
IS 17
BP 2637
EP 2639
PG 3
WC Optics
SC Optics
GA 498CO
UT WOS:000270114400033
PM 19724516
ER
PT J
AU Li, J
Zhong, Z
Connor, D
Mollenhauer, J
Muehleman, C
AF Li, J.
Zhong, Z.
Connor, D.
Mollenhauer, J.
Muehleman, C.
TI Phase-sensitive X-ray imaging of synovial joints
SO OSTEOARTHRITIS AND CARTILAGE
LA English
DT Article
DE Cartilage imaging; Diffraction Enhanced imaging; Analyzer-based imaging
ID ARTICULAR-CARTILAGE; DIFFRACTION; RADIOGRAPHY; TISSUE; KNEE; MRI; CT
AB Objective: To test the efficacy of phase-sensitive X-ray imaging for intact synovial joints, whereby refraction effects, along with the attenuation of conventional radiography, can be exploited.
Design: Intact cadaveric human knee joints were imaged, in the computed tomographic mode, using an analyzer-based X-ray,system at the National Synchrotron Light Source, Brookhaven National Laboratory. A collimated fan beam of 51 keV X-rays was prepared by a silicon [1,1,1 reflection] double-crystal monochromator. The X-ray beam transmitted through the specimen was imaged after diffraction in the vertical plane by means of the analyzer crystal with the analyzer crystal tuned to its half-reflectivity point (6.5 mu rad). A two-dimensional filtered backprojection (FBP) algorithm was used for reconstructing transverse slices of images.
Results: The resulting images demonstrate simultaneous soft tissue and bone contrast at a level that has not been achieved previously. Identifiable structures include articular cartilage, cruciate ligaments, loose connective tissue, menisci, and chondrocalcinosis.
Conclusion: Phase-sensitive X-ray imaging using an analyzer-based system renders exceptionally high quality images of soft and hard tissues within synovial joints, with high contrast and resolution, and thus holds promise for the eventual clinical utility. (C) 2009 Osteoarthritis Research Society International. Published by Elsevier Ltd. All rights reserved.
C1 [Li, J.; Muehleman, C.] Rush Univ, Med Ctr, Dept Biochem, Chicago, IL 60612 USA.
[Zhong, Z.; Connor, D.] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA.
[Mollenhauer, J.] Univ Tubingen, Nat Sci & Med Inst, Reutlingen, Germany.
[Muehleman, C.] Rush Univ, Med Ctr, Dept Orthoped Surg, Chicago, IL 60612 USA.
RP Muehleman, C (reprint author), Rush Univ, Med Ctr, Dept Biochem, Cohn Res Bldg,Room 524, Chicago, IL 60612 USA.
EM carol_muehleman@rush.edu
FU NIH [R01 AR48292-05]
FX Author contributions: JL, ZZ, and DC performed the imaging experiments
at the NSLS. JL prepared the specimens, reconstructed the data, and
optimized the images with IDL. JM and CM conceived and supervised the
project, and CM and DC wrote the manuscript.
NR 24
TC 18
Z9 18
U1 0
U2 4
PU W B SAUNDERS CO LTD
PI LONDON
PA 32 JAMESTOWN RD, LONDON NW1 7BY, ENGLAND
SN 1063-4584
J9 OSTEOARTHR CARTILAGE
JI Osteoarthritis Cartilage
PD SEP
PY 2009
VL 17
IS 9
BP 1193
EP 1196
DI 10.1016/j.joca.2009.03.005
PG 4
WC Orthopedics; Rheumatology
SC Orthopedics; Rheumatology
GA 498EA
UT WOS:000270118500011
PM 19328880
ER
PT J
AU He, LF
Chao, YY
Suzuki, K
Wu, KS
AF He, Lifeng
Chao, Yuyan
Suzuki, Kenji
Wu, Kesheng
TI Fast connected-component labeling
SO PATTERN RECOGNITION
LA English
DT Article
DE Labeling algorithm; Label equivalence; Connected component; Linear-time
algorithm; Pattern recognition
ID ARTIFICIAL NEURAL-NETWORK; BINARY IMAGES; PARALLEL COMPUTERS; FALSE
POSITIVES; ALGORITHM; ARCHITECTURE; OPERATIONS; REDUCTION; QUADTREES;
NODULES
AB Labeling of connected components in a binary image is one of the most fundamental operations in pattern recognition: labeling is required whenever a computer needs to recognize objects (connected components) in a binary image. This paper presents a fast two-scan algorithm for labeling of connected components in binary images. We propose an efficient procedure for assigning provisional labels to object pixels and checking label equivalence. Our algorithm is very simple in principle, easy to implement, and suitable for hardware and parallel implementation. We show the correctness of our algorithm, analyze its complexity, and compare it with other labeling algorithms. Experimental results demonstrated that our algorithm is superior to conventional labeling algorithms. (C) 2008 Elsevier Ltd. All rights reserved.
C1 [He, Lifeng] Aichi Prefectural Univ, Grad Sch Informat Sci & Technol, Aichi 4801198, Japan.
[Chao, Yuyan] Nagoya Sangyo Univ, Grad Sch Environm Management, Aichi 4888711, Japan.
[Suzuki, Kenji] Univ Chicago, Div Biol Sci, Dept Radiol, Chicago, IL 60637 USA.
[Wu, Kesheng] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[He, Lifeng; Chao, Yuyan] ShaanXi Univ Sci & Technol, Xian 710021, Shannxi, Peoples R China.
RP He, LF (reprint author), Aichi Prefectural Univ, Grad Sch Informat Sci & Technol, Aichi 4801198, Japan.
EM helifeng@ist.aichi-pu.ac.jp; chao@nagoya-su.ac.jp; suzuki@uchicago.edu;
KWu@lbl.gov
RI Liu, Guojun/A-9459-2015; Suzuki, Kenji/A-1284-2007
OI Liu, Guojun/0000-0003-1816-6239; Suzuki, Kenji/0000-0002-3993-8309
FU TOYOAKI Scholarship foundation, Japan
FX We thank the anonymous referees for their valuable comments that
improved this paper greatly. We are grateful to the editor for his/her
kind cooperation and help. We also thank Ms. E.F. Lanzl for proofreading
this paper. This work was partially supported by the TOYOAKI Scholarship
foundation, Japan.
NR 57
TC 99
Z9 113
U1 0
U2 19
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0031-3203
J9 PATTERN RECOGN
JI Pattern Recognit.
PD SEP
PY 2009
VL 42
IS 9
BP 1977
EP 1987
DI 10.1016/j.patcog.2008.10.013
PG 11
WC Computer Science, Artificial Intelligence; Engineering, Electrical &
Electronic
SC Computer Science; Engineering
GA 459GI
UT WOS:000267089000027
ER
PT J
AU Sartorius, A
Kiening, K
von Gall, C
Haberkorn, U
Unterberg, AW
Henn, FA
Meyer-Lindenberg, A
AF Sartorius, A.
Kiening, K.
von Gall, C.
Haberkorn, U.
Unterberg, A. W.
Henn, F. A.
Meyer-Lindenberg, A.
TI Psychomodulation by bilateral deep brain stimulation of the lateral
habenula in a patient long-lasting, therapy-refractory major depression
SO PHARMACOPSYCHIATRY
LA English
DT Meeting Abstract
CT 26th Symposium of the
Association-of-Neuropsychopharmacology-and-Pharmacopsychiatry (AGNP)
CY OCT 07-10, 2009
CL Munich, GERMANY
SP Assoc Neuropsychopharmacol & Pharmacopsychiat
C1 [Sartorius, A.; Meyer-Lindenberg, A.] Cent Inst Mental Hlth, Dept Psychiat & Psychotherapy, D-6800 Mannheim, Germany.
[Kiening, K.] Univ Heidelberg Hosp, Dept Neurosurg, Div Stereotact Neurosurg, Heidelberg, Germany.
[von Gall, C.; Haberkorn, U.] Univ Heidelberg, Dept Nucl Med, Heidelberg, Germany.
[Henn, F. A.] Brookhaven Natl Lab, Life Sci Directorate, Long Isl City, NY USA.
RI Sartorius, Alexander/E-3061-2012
NR 0
TC 1
Z9 1
U1 0
U2 1
PU GEORG THIEME VERLAG KG
PI STUTTGART
PA RUDIGERSTR 14, D-70469 STUTTGART, GERMANY
SN 0176-3679
J9 PHARMACOPSYCHIATRY
JI Pharmacopsychiatry
PD SEP
PY 2009
VL 42
IS 5
MA A140
BP 239
EP 239
PG 1
WC Pharmacology & Pharmacy; Psychiatry
SC Pharmacology & Pharmacy; Psychiatry
GA 503BS
UT WOS:000270507200151
ER
PT J
AU Read, EL
Lee, H
Fleming, GR
AF Read, Elizabeth L.
Lee, Hohjai
Fleming, Graham R.
TI Photon echo studies of photosynthetic light harvesting
SO PHOTOSYNTHESIS RESEARCH
LA English
DT Review
DE Photon echo; Photon echo peak shift; 2D Fourier transform photon echo
spectroscopy; Spectral band broadening; Reaction center; FMO; LH3;
Electronic quantum coherence
ID 2-DIMENSIONAL ELECTRONIC SPECTROSCOPY; ENERGY-TRANSFER; PEAK SHIFT;
IR-SPECTROSCOPY; DYNAMICS; SYSTEMS; COMPLEX; COHERENCE; BACTERIA;
2-COLOR
AB The broad linewidths in absorption spectra of photosynthetic complexes obscure information related to their structure and function. Photon echo techniques represent a powerful class of time-resolved electronic spectroscopy that allow researchers to probe the interactions normally hidden under broad linewidths with sufficient time resolution to follow the fastest energy transfer events in light harvesting. Here, we outline the technical approach and applications of two types of photon echo experiments: the photon echo peak shift and two-dimensional (2D) Fourier transform photon echo spectroscopy. We review several extensions of these techniques to photosynthetic complexes. Photon echo peak shift spectroscopy can be used to determine the strength of coupling between a pigment and its surrounding environment including neighboring pigments and to quantify timescales of energy transfer. Two-dimensional spectroscopy yields a frequency-resolved map of absorption and emission processes, allowing coupling interactions and energy transfer pathways to be viewed directly. Furthermore, 2D spectroscopy reveals structural information such as the relative orientations of coupled transitions. Both classes of experiments can be used to probe the quantum mechanical nature of photosynthetic light-harvesting: peak shift experiments allow quantification of correlated energetic fluctuations between pigments, while 2D techniques measure quantum beating directly, both of which indicate the extent of quantum coherence over multiple pigment sites in the protein complex. The mechanistic and structural information obtained by these techniques reveals valuable insights into the design principles of photosynthetic light-harvesting complexes, and a multitude of variations on the methods outlined here.
C1 [Read, Elizabeth L.; Lee, Hohjai; Fleming, Graham R.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Read, Elizabeth L.; Lee, Hohjai; Fleming, Graham R.] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
RP Fleming, GR (reprint author), Univ Calif Berkeley, Dept Chem, 221 Hildebrand Hall, Berkeley, CA 94720 USA.
EM grfleming@lbl.gov
FU U. S. Department of Energy [DE-AC02-05CH11231, DE-AC03-76SF000098]
FX This work was supported by the Director, Office of Science, Office of
Basic Energy Sciences, of the U. S. Department of Energy under Contract
No. DE-AC02-05CH11231 and by the Chemical Sciences, Geosciences and
Biosciences Division, Office of Basic Energy Sciences, U. S. Department
of Energy under contract DE-AC03-76SF000098. This manuscript was edited
by Govindjee.
NR 28
TC 13
Z9 13
U1 1
U2 27
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0166-8595
J9 PHOTOSYNTH RES
JI Photosynth. Res.
PD SEP
PY 2009
VL 101
IS 2-3
BP 233
EP 243
DI 10.1007/s11120-009-9464-9
PG 11
WC Plant Sciences
SC Plant Sciences
GA 495IT
UT WOS:000269885200013
PM 19590976
ER
PT J
AU LaViolette, RA
Glass, K
Colbaugh, R
AF LaViolette, Randall A.
Glass, Kristin
Colbaugh, Richard
TI Deep information from limited observation of robust yet fragile systems
SO PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
LA English
DT Article
DE Random systems; Complex systems; Robust yet fragile; Deep information;
Limited observations; Vulnerability
ID HIGHLY OPTIMIZED TOLERANCE; FOREST-FIRE MODEL; COMPLEXITY
AB We show how one can completely reconstruct even moderately optimized configurations of the Forest Fire model with relatively few observations. We discuss the relationship between the deep information from limited observations (DILO) to the robust-yet-fragile (RYF) property of the Forest Fire model and propose that DILO may he a general property of RYF complex systems. (C) 2009 Elsevier B.V. All rights reserved.
C1 [LaViolette, Randall A.; Colbaugh, Richard] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Glass, Kristin; Colbaugh, Richard] New Mexico Inst Min & Technol, Socorro, NM 87801 USA.
RP LaViolette, RA (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM ralavio@sandia.gov; kglass@sandia.gov; rcolbau@sandia.gov
FU Sandia National Laboratories Laboratory Directed Research and
Development Program; Sandia Corporation; Lockheed Martin Company for the
United States Department of Energy's National Nuclear Security
Administration [DE-AC04-94AL85000]
FX RAL thanks Dr. John Feddema (Sandia) for helpful discussions. The work
was supported in part by the Sandia National Laboratories Laboratory
Directed Research and Development Program. Sandia National Laboratories
is a multi-program laboratory operated by Sandia Corporation, a Lockheed
Martin Company for the United States Department of Energy's National
Nuclear Security Administration under contract DE-AC04-94AL85000.
NR 16
TC 0
Z9 0
U1 0
U2 9
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-4371
J9 PHYSICA A
JI Physica A
PD SEP 1
PY 2009
VL 388
IS 17
BP 3283
EP 3287
DI 10.1016/j.physa.2009.05.019
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 470GM
UT WOS:000267963200001
ER
PT J
AU Lauter, V
Ambaye, H
Goyette, R
Lee, WTH
Parizzi, A
AF Lauter, Valeria
Ambaye, Hailemariam
Goyette, Richard
Lee, Wai-Tung Hal
Parizzi, Andre
TI Highlights from the magnetism reflectometer at the SNS
SO PHYSICA B-CONDENSED MATTER
LA English
DT Article; Proceedings Paper
CT 7th International Workshop on Polarized Neutrons for Condensed Matter
Investigations/2nd International Symposium of Quantum Beam Science
Directorate
CY SEP 01-05, 2008
CL Tokai, JAPAN
SP Japanese Soc Neutron Sci, Magnet Soc Japan, Ibaraki Prefecture
DE Neutron reflectometry; Polarized neutrons; Magnetic films; Off-specular
scattering
AB The magnetism reflectometer at the SNS has passed the phase of commissioning and is in operation for users. The high power of the neutron source demands that special attention be paid to the optimization of the background in order to be able to measure the two-dimensional maps of reflected and scattered intensities with polarized neutrons in a broad range of momentum transfer. It implies an effective separation of the magnetic and non-magnetic reflectivity, off-specular scattering and the grazing incidence SANS in a high range of momentum transfer. Therefore the polarizing and the analyzing efficiencies are of particular importance on this time-of-flight instrument. At the beginning of July 2008 the world's first (3)He neutron analyzer with on-line pump-up polarization was successfully installed and the tests with a magnetic multilayer film showing a strong off-specular spin-flip scattering were made. The performance of the instrument is under constant improvement in order to make it an effective and optimal instrument for the applications in nanosciences. Published by Elsevier B.V.
C1 [Lauter, Valeria; Ambaye, Hailemariam; Goyette, Richard; Lee, Wai-Tung Hal; Parizzi, Andre] Oak Ridge Natl Lab, Spallat Neutron Source, Oak Ridge, TN 37831 USA.
RP Lauter, V (reprint author), Oak Ridge Natl Lab, Spallat Neutron Source, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA.
EM lauterv@ornl.gov
RI Ambaye, Haile/D-1503-2016
OI Ambaye, Haile/0000-0002-8122-9952
NR 8
TC 41
Z9 41
U1 1
U2 21
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0921-4526
J9 PHYSICA B
JI Physica B
PD SEP 1
PY 2009
VL 404
IS 17
BP 2543
EP 2546
DI 10.1016/j.physb.2009.06.021
PG 4
WC Physics, Condensed Matter
SC Physics
GA 498EQ
UT WOS:000270120200012
ER
PT J
AU Lauter, H
Lauter, V
Vorobiev, A
Mylaev, M
Romashev, L
Ustinov, V
Toperverg, B
AF Lauter, H.
Lauter, V.
Vorobiev, A.
Mylaev, M.
Romashev, L.
Ustinov, V.
Toperverg, B.
TI Magnetization distribution in magnetic films studied with
Larmor-encoding
SO PHYSICA B-CONDENSED MATTER
LA English
DT Article; Proceedings Paper
CT 7th International Workshop on Polarized Neutrons for Condensed Matter
Investigations/2nd International Symposium of Quantum Beam Science
Directorate
CY SEP 01-05, 2008
CL Tokai, JAPAN
SP Japanese Soc Neutron Sci, Magnet Soc Japan, Ibaraki Prefecture
DE Polarized neutron reflectometry; Larmor-precession; Magnetic films;
Off-specular scattering
ID POLARIZATION; REFLECTION; SCATTERING
AB Additional information about the magnetization distribution in magnetic films is obtained with a 3D-polarimetry set-up. A pilot experiment was performed with the neutron polarization aligned perpendicular to the surface of a Fe-film in a magnetic field parallel to its surface. The Larmor-precession in the magnetic field between two current sheets was used to adjust the neutron polarization perpendicular to the sample surface. This new polarization-magnetization configuration was probed with a Fe-film in specular and off-specular scattering. The off-specular scattering is created by the magnetic domain structure of the Fe-film in remanence. The results of specular and off-specular scattering are reproduced by calculations for the configuration of the incoming neutron polarization parallel to the sample surface and the magnetic field and for the configuration of the incoming neutron polarization perpendicular to the sample surface and the magnetic field. (C) 2009 Published by Elsevier B.V.
C1 [Lauter, H.] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France.
[Lauter, V.] Oak Ridge Natl Lab, Spallat Neutron Source, Oak Ridge, TN 37831 USA.
[Vorobiev, A.] ESRF, Grenoble, France.
[Mylaev, M.; Romashev, L.; Ustinov, V.] Inst Met Phys, Ekaterinburg, Russia.
[Toperverg, B.] Ruhr Univ Bochum, Bochum, Germany.
[Toperverg, B.] RAS, PNPI, St Petersburg, Russia.
RP Lauter, H (reprint author), Inst Max Von Laue Paul Langevin, BP 156X, F-38042 Grenoble, France.
EM lauter@ill.fr
RI Milyaev, Mikhail/J-8070-2013; Ustinov, Vladimir/G-7501-2011;
OI Milyaev, Mikhail/0000-0001-7828-3571; Ustinov,
Vladimir/0000-0002-5155-7947; Toperverg, Boris/0000-0001-5166-7997
NR 12
TC 2
Z9 2
U1 0
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0921-4526
J9 PHYSICA B
JI Physica B
PD SEP 1
PY 2009
VL 404
IS 17
BP 2553
EP 2556
DI 10.1016/j.physb.2009.06.131
PG 4
WC Physics, Condensed Matter
SC Physics
GA 498EQ
UT WOS:000270120200015
ER
PT J
AU Krycka, KL
Booth, R
Borchers, JA
Chen, WC
Conlon, C
Gentile, TR
Hogg, C
Ijiri, Y
Laver, M
Maranville, BB
Majetich, SA
Rhyne, JJ
Watson, SM
AF Krycka, K. L.
Booth, R.
Borchers, J. A.
Chen, W. C.
Conlon, C.
Gentile, T. R.
Hogg, C.
Ijiri, Y.
Laver, M.
Maranville, B. B.
Majetich, S. A.
Rhyne, J. J.
Watson, S. M.
TI Resolving 3D magnetism in nanoparticles using polarization analyzed SANS
SO PHYSICA B-CONDENSED MATTER
LA English
DT Article; Proceedings Paper
CT 7th International Workshop on Polarized Neutrons for Condensed Matter
Investigations/2nd International Symposium of Quantum Beam Science
Directorate
CY SEP 01-05, 2008
CL Tokai, JAPAN
SP Japanese Soc Neutron Sci, Magnet Soc Japan, Ibaraki Prefecture
AB Utilizing a polarized He-3 cell as an analyzer we were able to perform a full polarization analysis on small-angle neutron scattering (SANS) data from an ensemble of 7 turn magnetite nanoparticles. The results led to clear separation of magnetic and nuclear scattering plus a 3D vectorial decomposition of the magnetism observed. At remanence variation in long-range magnetic correlation length was found to be highly dependent on temperature from 50 to 300 K. Additionally, we were able to compare the magnetic scattering from moments along and perpendicular to an applied field at saturation and in remanence. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Krycka, K. L.; Borchers, J. A.; Chen, W. C.; Gentile, T. R.; Laver, M.; Maranville, B. B.; Watson, S. M.] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA.
[Booth, R.; Hogg, C.; Majetich, S. A.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
[Conlon, C.; Ijiri, Y.] Oberlin Coll, Oberlin, OH 44074 USA.
[Rhyne, J. J.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Krycka, KL (reprint author), NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA.
EM kathryn.krycka@nist.gov
RI Majetich, Sara/B-1022-2015
OI Majetich, Sara/0000-0003-0848-9317
NR 11
TC 21
Z9 21
U1 1
U2 12
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0921-4526
J9 PHYSICA B
JI Physica B
PD SEP 1
PY 2009
VL 404
IS 17
BP 2561
EP 2564
DI 10.1016/j.physb.2009.06.024
PG 4
WC Physics, Condensed Matter
SC Physics
GA 498EQ
UT WOS:000270120200017
ER
PT J
AU Pynn, R
Fitzsimmons, MR
Lee, WT
Stonaha, P
Shah, VR
Washington, AL
Kirby, BJ
Majkrzak, CF
Maranville, BB
AF Pynn, Roger
Fitzsimmons, M. R.
Lee, W. T.
Stonaha, P.
Shah, V. R.
Washington, A. L.
Kirby, B. J.
Majkrzak, C. F.
Maranville, B. B.
TI Birefringent neutron prisms for spin echo scattering angle measurement
SO PHYSICA B-CONDENSED MATTER
LA English
DT Article; Proceedings Paper
CT 7th International Workshop on Polarized Neutrons for Condensed Matter
Investigations/2nd International Symposium of Quantum Beam Science
Directorate
CY SEP 01-05, 2008
CL Tokai, JAPAN
SP Japanese Soc Neutron Sci, Magnet Soc Japan, Ibaraki Prefecture
AB In the first decade of the 19th century, an English chemist, William Wollaston, invented an arrangement of birefringent prisms that splits a beam of light into two spatially separated beams with orthogonal polarizations. We have constructed similar devices for neutrons using triangular cross-section solenoids and employed them for Spin Echo Scattering Angle Measurement (SESAME). A key difference between birefringent neutron prisms and their optical analogues is that it is hard to embed the former in a medium which has absolutely no birefringence because this implies the removal of all magnetic fields. We have overcome this problem by using the symmetry properties of the Wollaston neutron prisms and of the overall spin echo arrangement. These symmetries cause a cancellation of Larmor phase aberrations and provide robust coding of neutron scattering angles with simple equipment. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Pynn, Roger; Stonaha, P.; Shah, V. R.; Washington, A. L.] Indiana Univ, Bloomington, IN 47405 USA.
[Pynn, Roger; Lee, W. T.] Oak Ridge Natl Lab, Oak Ridge, TN USA.
[Fitzsimmons, M. R.] Los Alamos Natl Lab, Los Alamos, NM USA.
[Kirby, B. J.; Majkrzak, C. F.; Maranville, B. B.] NIST, Gaithersburg, MD USA.
RP Pynn, R (reprint author), Indiana Univ, Bloomington, IN 47405 USA.
EM rpynn@indiana.edu
RI Lujan Center, LANL/G-4896-2012;
OI Stonaha, Paul/0000-0002-6846-2442; Washington, Adam/0000-0002-3243-1556
NR 5
TC 11
Z9 11
U1 0
U2 10
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0921-4526
J9 PHYSICA B
JI Physica B
PD SEP 1
PY 2009
VL 404
IS 17
BP 2582
EP 2584
DI 10.1016/j.physb.2009.06.025
PG 3
WC Physics, Condensed Matter
SC Physics
GA 498EQ
UT WOS:000270120200023
ER
PT J
AU Bleuel, M
Carpenter, JM
Micklich, BJ
Geltenbort, P
Mishima, K
Shimizu, HM
Iwashita, Y
Hirota, K
Hino, M
Kennedy, SJ
Lal, J
AF Bleuel, M.
Carpenter, J. M.
Micklich, B. J.
Geltenbort, P.
Mishima, K.
Shimizu, H. M.
Iwashita, Y.
Hirota, K.
Hino, M.
Kennedy, S. J.
Lal, J.
TI A small angle neutron scattering (SANS) experiment using very cold
neutrons (VCN)
SO PHYSICA B-CONDENSED MATTER
LA English
DT Article; Proceedings Paper
CT 7th International Workshop on Polarized Neutrons for Condensed Matter
Investigations/2nd International Symposium of Quantum Beam Science
Directorate
CY SEP 01-05, 2008
CL Tokai, JAPAN
SP Japanese Soc Neutron Sci, Magnet Soc Japan, Ibaraki Prefecture
DE Very cold neutrons; Small angle neutron scattering; Magnetic neutron
lens; Polarizing monochromator super-mirror
AB This paper describes the results of SANS measurements of small samples using the very cold neutron (VCN) beam of the PF2 instrument at the Institut Laue Langevin (ILL), France. In addition to a classical SANS pinhole collimation, the experiment used a polarizing supermirror as a monochromator and a magnetic sextupole lens to focus the neutron beam in order to gain intensity and avoid any material in the neutron beam besides the sample. Published by Elsevier B.V.
C1 [Bleuel, M.; Carpenter, J. M.; Micklich, B. J.; Lal, J.] Argonne Natl Lab, Intense Pulsed Neutron Source, Argonne, IL 60439 USA.
[Geltenbort, P.] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France.
[Mishima, K.; Shimizu, H. M.] KEK, Neutron Sci Lab, Tsukuba, Ibaraki 3050801, Japan.
[Iwashita, Y.] Kyoto Univ, Inst Chem Res, Kyoto 6110011, Japan.
[Hirota, K.] RIKEN, Wako, Aitama 3510198, Japan.
[Hino, M.] Kyoto Univ, Inst Res Reactor, Osaka 5900494, Japan.
[Kennedy, S. J.] Australian Nucl Sci & Technol Org, Bragg Inst, Lucas Heights, NSW 2234, Australia.
RP Bleuel, M (reprint author), Argonne Natl Lab, Intense Pulsed Neutron Source, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM mbleuel@anl.gov
NR 10
TC 4
Z9 5
U1 1
U2 4
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0921-4526
J9 PHYSICA B
JI Physica B
PD SEP 1
PY 2009
VL 404
IS 17
BP 2629
EP 2632
DI 10.1016/j.physb.2009.06.048
PG 4
WC Physics, Condensed Matter
SC Physics
GA 498EQ
UT WOS:000270120200034
ER
PT J
AU Lee, WT
Tong, X
Rich, D
Liu, Y
Fleenor, M
Ismaili, A
Pierce, J
Hagen, M
Dadras, J
Robertson, JL
AF Lee, Wai Tung
Tong, Xin
Rich, Dennis
Liu, Yun
Fleenor, Michael
Ismaili, Akbar
Pierce, Joshua
Hagen, Mark
Dadras, Jonny
Robertson, J. Lee
TI Increasing the pump-up rate to polarize (3)He gas using spin-exchange
optical pumping method
SO PHYSICA B-CONDENSED MATTER
LA English
DT Article
DE Polarized (3)He; Spin-exchange optical pumping; Spin exchange; Spin
destruction; Neutron spin filter
ID HIGH-DENSITY; ILL; TARGETS; FILTERS; RB
AB In recent years, polarized (3)He gas has increasingly been used as neutron polarizers and polarization analyzers. Two of the leading methods to pelarize the (3)He gas are the spin-exchange optical pumping (SEOP) metho and the meta-stable exchange optical pumping (MEOP) method. At present, the SEOP setup is comparatively compact due to the fact that it does not require the sophisticated compressor system used in the MEOP method. the temperature and the laser power available determine the speed, at which the SEOP method polarized the (3)He gas. for the quantity of gas typically used in neutron scattering work, this speed in independent of the quantity of the gas required, whereas the polarizing ture using the MEOP method is proportional to the quantify of gas required. Currently, using the SEOP method to polarize serval bar-liters of (3)He to 70% polarization would required 20-40h. This is an order of magnitude longer than the MEOP metho for the same quantity of gas and polizarition. It would therefore be advantageous to speed up the SEOP process. In this article, we analyze the requirements for temperature, laser power, and the type of alkali used in order to shorten the time required to palarize (3)He gas using the SEOP method.
C1 [Lee, Wai Tung; Tong, Xin; Rich, Dennis; Liu, Yun; Fleenor, Michael; Pierce, Joshua; Hagen, Mark; Robertson, J. Lee] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Ismaili, Akbar; Dadras, Jonny] Univ Tennessee, Knoxville, TN 37996 USA.
RP Lee, WT (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RI tong, Xin/C-4853-2012
OI tong, Xin/0000-0001-6105-5345
FU Tom Gentile of the National Institute of Standards and Technology; Oak
Ridge National Laboratory; US Department of Energy [DE-AC05-00OR22725]
FX The authors acknowledge Tom Gentile of the National Institute of
Standards and Technology for his advice. The Oak Ridge National
Laboratory is managed by UT-Battelle, LLC for the US Department of
Energy under contract DE-AC05-00OR22725.
NR 18
TC 1
Z9 1
U1 0
U2 6
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0921-4526
J9 PHYSICA B
JI Physica B
PD SEP 1
PY 2009
VL 404
IS 17
BP 2670
EP 2672
DI 10.1016/j.physb.2009.06.037
PG 3
WC Physics, Condensed Matter
SC Physics
GA 498EQ
UT WOS:000270120200045
ER
PT J
AU Noh, JH
Cho, IS
Lee, S
Cho, CM
Han, HS
An, JS
Kwak, CH
Kim, JY
Jung, HS
Lee, JK
Hong, KS
AF Noh, Jun Hong
Cho, In-Sun
Lee, Sangwook
Cho, Chin Moo
Han, Hyun Soo
An, Jae-Sul
Kwak, Chae Hyun
Kim, Jin Yong
Jung, Hyun Suk
Lee, Jung-Kun
Hong, Kug Sun
TI Photoluminescence and electrical properties of epitaxial Al-doped ZnO
transparent conducting thin films
SO PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
LA English
DT Article
ID MOLECULAR-BEAM EPITAXY; BAND-EDGE LUMINESCENCE; OPTICAL-PROPERTIES;
ROOM-TEMPERATURE; SPRAY-PYROLYSIS; EMISSION; GREEN; GAN
AB Epitaxial ZnO and Al-doped ZnO (AZO) thin films were grown on (0001)-sapphire substrates using pulsed laser deposition. The photoluminescence spectrum of the highly conductive (1.3 x 10(3) S cm(-1)), as-grown AZO shows a poor near band edge (NBE) emission (3.30 eV) and no deep level emission at room temperature. In addition, the peak (3.386 eV) for the free excitons of AZO showed thermal quenching behavior with two activation energies (38.2 and 10.0 meV). The poor NBE emission is attributed to the nonradiative recombination center created by Al doping. Highly conductive (6.0 x 10(2) S cm(-1)) and intense NBE emitting AZO films could be achieved by the reduction of the nonradiative recombination centers through hydrogen annealing. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
C1 [Noh, Jun Hong; Cho, In-Sun; Lee, Sangwook; Cho, Chin Moo; Han, Hyun Soo; An, Jae-Sul; Kwak, Chae Hyun; Hong, Kug Sun] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151744, South Korea.
[Kim, Jin Yong] Natl Renewable Energy Lab, Chem & Biosci Ctr, Golden, CO 80401 USA.
[Jung, Hyun Suk] Kookmin Univ, Sch Adv Mat Engn, Seoul 136702, South Korea.
[Lee, Jung-Kun] Univ Pittsburgh, Dept Mech Engn & Mat Sci, Pittsburgh, PA 15260 USA.
RP Hong, KS (reprint author), Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151744, South Korea.
EM kshongss@plaza.snu.ac.kr
RI Kim, Jin Young/B-7077-2012; Cho, In Sun/H-6557-2011; Lee,
Sangwook/O-9166-2015; Jung, Hyun Suk/H-3659-2015;
OI Kim, Jin Young/0000-0001-7728-3182; Lee, Sangwook/0000-0002-3535-0241;
Jung, Hyun Suk/0000-0002-7803-6930; Cho, In Sun/0000-0001-5622-7712
NR 32
TC 9
Z9 9
U1 1
U2 12
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1862-6300
J9 PHYS STATUS SOLIDI A
JI Phys. Status Solidi A-Appl. Mat.
PD SEP
PY 2009
VL 206
IS 9
SI SI
BP 2133
EP 2138
DI 10.1002/pssa.200881790
PG 6
WC Materials Science, Multidisciplinary; Physics, Applied; Physics,
Condensed Matter
SC Materials Science; Physics
GA 502FD
UT WOS:000270440100037
ER
PT J
AU Prasankumar, RP
Upadhya, PC
Taylor, AJ
AF Prasankumar, Rohit P.
Upadhya, Prashanth C.
Taylor, Antoinette J.
TI Ultrafast carrier dynamics in semiconductor nanowires
SO PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
LA English
DT Review
ID RESOLVED TERAHERTZ SPECTROSCOPY; ZNO TETRAPOD NANOWIRES; ZINC-OXIDE
NANOWIRES; LIQUID-SOLID GROWTH; SILICON NANOWIRES; QUANTUM WIRES;
STIMULATED-EMISSION; GAN-NANOWIRES; ELECTRONIC-PROPERTIES;
ROOM-TEMPERATURE
AB Semiconductor nanowires (NWs) are nanostructures with a number of novel optical and electronic properties that offer great promise for applications in areas including nanoelectronics, thermoelectrics sensing and nanophotonics. To realize the full potential of these unique nanosystems, however, a deep understanding of their response to optical excitation on a sub-picosecond time scale is required. Here we review recent ultrafast optical studies of carrier dynamics in semiconductor NWs. These experiments have been performed on different materials as a function of both intrinsic NW parameters such as diameter and doping as well as experimental parameters including photoexcited carrier density and wavelength. A variety of phenomena, including one-dimensional (1D) exciton dynamics, rapid carrier trapping at surface and bulk defects, and lasing from an electron-hole plasma (EHP) have been observed. These first measurements of ultrafast carrier dynamics are a tantalizing hint of the rich physics yet to be discovered in these quasi-1D systems.
[GRAPHICS]
Ultrafast optical spectroscopy can track the temporal evolution of carrier populations in semiconductor NWs with femtosecond time resolution. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
C1 [Prasankumar, Rohit P.; Upadhya, Prashanth C.; Taylor, Antoinette J.] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA.
RP Prasankumar, RP (reprint author), Los Alamos Natl Lab, Ctr Integrated Nanotechnol, POB 1663, Los Alamos, NM 87545 USA.
EM rpprasan@lanl.gov
FU US. Department of Energy [DE-AC52-06NA25396]
FX We would like to thank S. T. Picraux, G. T. Wang, J. A. Hollingsworth,
N. Smith, Q. Li, S. G. Choi, S. A. Trugman, A. A. Talin, A. J. Fischer,
and H. Htoon for sample fabrication and informative discussions. We
would also like our colleagues whose work is reviewed here for allowing
us to use figures from their publications. This work was performed at
the Center for Integrated Nanotechnologies, a US Department of Energy,
Office of Basic Energy Sciences user facility and also partially
supported by the NNSAs Laboratory Directed Research and Development
Program. Los Alamos National Laboratory, an affirmative action equal
opportunity employer, is operated by Los Alamos National Security, LLC,
for the National Nuclear Security Administration of the US. Department
of Energy under contract DE-AC52-06NA25396. This work was also supported
by the Department of Energy, Office of Basic Energy Sciences.
NR 129
TC 52
Z9 52
U1 9
U2 75
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY
SN 0370-1972
J9 PHYS STATUS SOLIDI B
JI Phys. Status Solidi B-Basic Solid State Phys.
PD SEP
PY 2009
VL 246
IS 9
BP 1973
EP 1995
DI 10.1002/pssb.200945128
PG 23
WC Physics, Condensed Matter
SC Physics
GA 496ZF
UT WOS:000270018600001
ER
PT J
AU Botello-Mendez, AR
Lopez-Urias, F
Cruz-Silva, E
Sumpter, BG
Meunier, V
Terrones, M
Terrones, H
AF Botello-Mendez, A. R.
Lopez-Urias, F.
Cruz-Silva, E.
Sumpter, B. G.
Meunier, V.
Terrones, M.
Terrones, H.
TI The importance of defects for carbon nanoribbon based electronics
SO PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
LA English
DT Article
ID GRAPHENE NANORIBBONS; GRAPHITE
AB The utilization of graphene nanoribbons for next generation nanoelectronics is commonly expected to depend on the controlled synthesis that yields a low density of defects. Edge roughness and vacancies have been shown to have a large impact on the performance of graphene nanoribbon transistors. In contrast, we show how certain defects can be used to enhance the electronic and magnetic properties of graphene nanoribbons. We explore the properties of hybrid graphene nanoribbons with armchair and zigzag features joined by an array of pentagon-heptagon structural defects. The graphene nanoribbons display an increased density of states at the Fermi level, and half metallicity in absence of external fields. (c) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
C1 [Botello-Mendez, A. R.; Lopez-Urias, F.; Terrones, M.; Terrones, H.] TPICYT, Lab Nanosci & Nanotechnol, San Luis Potosi 78216, SLP, Mexico.
[Botello-Mendez, A. R.; Lopez-Urias, F.; Terrones, M.; Terrones, H.] TPICYT, Res & Adv Mat Dept, San Luis Potosi 78216, SLP, Mexico.
[Cruz-Silva, E.; Sumpter, B. G.; Meunier, V.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Terrones, H (reprint author), TPICYT, Lab Nanosci & Nanotechnol, Camino Presa San Jose 2055, San Luis Potosi 78216, SLP, Mexico.
EM hterrones@ipicyt.edu.mx
RI Cruz-Silva, Eduardo/B-7003-2009; Meunier, Vincent/F-9391-2010; Sumpter,
Bobby/C-9459-2013; Terrones, Mauricio/B-3829-2014;
OI Cruz-Silva, Eduardo/0000-0003-2877-1598; Meunier,
Vincent/0000-0002-7013-179X; Sumpter, Bobby/0000-0001-6341-0355; Botello
Mendez, Andres/0000-0002-7317-4699
FU CONACYT-Mexico [56787, 45762, 60218-F1, 45772]; Inter American
Collaboration [41464, 42428]; SALUD-CONACYT [2004-01-013]; Fondo Mixto
de Puebla [PUE-2004-CO29]; Fondo Mixto de San Luis Potosi [63001
S-3908]; Division of Scientific User Facilities; U.S. Department of
Energy; Division of Materials Science and Engineering, U.S. Department
of Energy [DEAC05-000R22725]
FX The authors are grateful to D. Ramirez, G. Ramirez, and K. Gomez for
technical assistance. This work was supported in part by CONACYT-Mexico
grants: 56787 (Laboratory for Nanoscience and Nanotechnology
Research-LINAN), 45762 (HT), 60218-F1 (FLU), 45772 (NIT), 41464 Inter
American Collaboration (MT), 42428 - Inter American Collaboration (HT),
2004-01-013/SALUD-CONACYT (NIT), PUE-2004-CO29 Fondo Mixto de Puebla
(MT), Fondo Mixto de San Luis Potosi 63001 S-3908 (MT), Fondo Mixto de
San Luis Potosi 63072 S-3909 (HT), and Ph.D. Scholarship (ARBM). VM, ECS
and BGS acknowledge work supported by the Center for Nanophase Materials
Sciences (CNMS), sponsored by the Division of Scientific User
Facilities, U.S. Department of Energy and by the Division of Materials
Science and Engineering, U.S. Department of Energy under Contract No.
DEAC05-000R22725 with UT-Battelle, LLC at Oak Ridge National Laboratory
(ORNL).
NR 18
TC 7
Z9 8
U1 0
U2 14
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1862-6254
J9 PHYS STATUS SOLIDI-R
JI Phys. Status Solidi-Rapid Res. Lett.
PD SEP
PY 2009
VL 3
IS 6
BP 181
EP 183
DI 10.1002/pssr.200903154
PG 3
WC Materials Science, Multidisciplinary; Physics, Applied; Physics,
Condensed Matter
SC Materials Science; Physics
GA 498RG
UT WOS:000270159700013
ER
PT J
AU Bilodeau, RC
Dumitriu, I
Gibson, ND
Walter, CW
Berrah, N
AF Bilodeau, R. C.
Dumitriu, I.
Gibson, N. D.
Walter, C. W.
Berrah, N.
TI Promoting a core electron to fill a d shell: A threshold law and shape
and Feshbach resonances
SO PHYSICAL REVIEW A
LA English
DT Article
ID ATOMIC NEGATIVE-IONS; XUV PHOTOABSORPTION; PHOTODETACHMENT; COLLISIONS;
PLATINUM; DYNAMICS
AB Absolute cross sections for the formation of Pt+, Pt2+, and Pt3+ following 4f and 5p inner-shell photoexcitation and detachment of Pt- 4f(14)5d(9)6s(2) D-2 are measured. Signal in the Pt3+ production channel is dominated by 4f detachment and allows for the observation of a d-wave Wigner threshold law following single-photon absorption. Promoting a 5p electron into the 5d orbital produces a shape resonance while promoting a 4f electron produces Feshbach resonances, demonstrating the importance of core-valence interactions.
C1 [Bilodeau, R. C.; Dumitriu, I.; Berrah, N.] Western Michigan Univ, Dept Phys, Kalamazoo, MI 49008 USA.
[Bilodeau, R. C.; Dumitriu, I.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Gibson, N. D.; Walter, C. W.] Denison Univ, Dept Phys & Astron, Granville, OH 43023 USA.
RP Bilodeau, RC (reprint author), Western Michigan Univ, Dept Phys, Kalamazoo, MI 49008 USA.
EM rcbilodeau@lbl.gov
OI Bilodeau, Rene/0000-0001-8607-2328
FU DOE; Office of Science; BES; Chemical, Geoscience and Biological
Divisions; Scientific User Facilities Division; NSF [0456916, 0757976]
FX We thank S. Manson, T. Rescigno, and C. W. McCurdy for fruitful
discussions. This work was supported by DOE, Office of Science, BES,
Chemical, Geoscience and Biological Divisions. The ALS was funded by
DOE, Scientific User Facilities Division. N. D. G. and C. W. W.
acknowledge support from NSF, Grants No. 0456916 and No. 0757976.
NR 41
TC 6
Z9 6
U1 1
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9926
EI 2469-9934
J9 PHYS REV A
JI Phys. Rev. A
PD SEP
PY 2009
VL 80
IS 3
AR 031403
DI 10.1103/PhysRevA.80.031403
PG 4
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 501LR
UT WOS:000270383900012
ER
PT J
AU Carniato, S
Guillemin, R
Stolte, WC
Journel, L
Taieb, R
Lindle, DW
Simon, M
AF Carniato, S.
Guillemin, R.
Stolte, W. C.
Journel, L.
Taieb, R.
Lindle, D. W.
Simon, M.
TI Experimental and theoretical investigation of molecular field effects by
polarization-resolved resonant inelastic x-ray scattering
SO PHYSICAL REVIEW A
LA English
DT Article
ID S2P PHOTOELECTRON-SPECTRA; AB-INITIO CALCULATIONS; ADVANCED
LIGHT-SOURCE; SPIN-ORBIT; ANGULAR-DISTRIBUTION; VIBRATIONAL STRUCTURE;
ELECTRON-SPECTRA; RAMAN-SCATTERING; SPECTROSCOPY; IONIZATION
AB We present a combined theoretical and experimental study of molecular field effects on molecular core levels. Polarization-dependent resonant inelastic x-ray scattering is observed experimentally after resonant K-shell excitation of CF3Cl and HCl. We explain the linear dichroism observed in spin-orbit level intensities as due to molecular field effects, including singlet-triplet exchange, and interpret this behavior in terms of population differences in the 2p(x,y,z) inner-shell orbitals. We investigate theoretically the different factors that can affect the electronic populations and the dynamical R dependence of the spin-orbit ratio. Finally, the results obtained are used to interpret the L-shell absorption spectra of the two molecules.
C1 [Carniato, S.; Guillemin, R.; Journel, L.; Taieb, R.; Simon, M.] Univ Paris 06, Lab Chim Phys Mat & Rayonnement, UMR 7614, F-75231 Paris 05, France.
[Guillemin, R.; Taieb, R.; Simon, M.] CNRS, Lab Chim Phys Mat & Rayonnement, UMR 7614, F-75231 Paris, France.
[Stolte, W. C.; Lindle, D. W.] Univ Nevada, Dept Chem, Las Vegas, NV 89154 USA.
[Stolte, W. C.] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
RP Carniato, S (reprint author), Univ Paris 06, Lab Chim Phys Mat & Rayonnement, UMR 7614, 11 Rue Pierre & Marie Curie, F-75231 Paris 05, France.
FU NSF [PHY05- 55699]; CNRS
FX The authors thank the staff of the ALS for their support. The UNLV team
was funded by NSF under Award No. PHY05- 55699. Financial support of
PICS by CNRS is gratefully acknowledged. Computations were performed at
the Institut du Developpement et des Ressources en Informatique
Scientifique (IDRIS), France.
NR 59
TC 19
Z9 19
U1 1
U2 7
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1050-2947
J9 PHYS REV A
JI Phys. Rev. A
PD SEP
PY 2009
VL 80
IS 3
AR 032513
DI 10.1103/PhysRevA.80.032513
PG 12
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 501LR
UT WOS:000270383900085
ER
PT J
AU Habibi, M
Esteves, DA
Phaneuf, RA
Kilcoyne, ALD
Aguilar, A
Cisneros, C
AF Habibi, M.
Esteves, D. A.
Phaneuf, R. A.
Kilcoyne, A. L. D.
Aguilar, A.
Cisneros, C.
TI Photoionization cross sections for ions of the cerium isonuclear
sequence
SO PHYSICAL REVIEW A
LA English
DT Article
ID XE-LIKE IONS; CHARGED IONS; BA; PHOTOABSORPTION; RADIATION; COLLAPSE;
BARIUM; ATOMS
AB Photoionization cross sections for Ce(q+) (1 <= q <= 9) ions were measured in the 105-180 eV energy range of the 4d inner-shell giant resonance by merging a mass-to-charge-ratio-selected ion beam with a beam of monochromatized synchrotron radiation. The Cowan atomic structure code was used as an aid to interpret the experimental data. Four Rydberg series for 4d -> nf (n >= 4) and 4d -> np (n >= 6) autoionizing excitations were assigned using the quantum-defect theory in the Ce(3+) photoionization cross section. The experimental data show the collapse of the nf wave functions (n >= 4) with increasing ionization stage as outer-shell electrons are stripped from the parent ion. The nf orbital collapse occurs partially for Ce(2+) and Ce(3+) ions and completely for Ce(4+), where these wave functions penetrate the core region of the ion. A strong contribution to the total oscillator strength was observed in multiple photoionization channels for Ce(+), Ce(2+), and Ce(3+), whereas most of the 4d excitations of the higher charge states decay by ejection of one electron.
C1 [Habibi, M.; Esteves, D. A.; Phaneuf, R. A.] Univ Nevada, Dept Phys, Reno, NV 89557 USA.
[Kilcoyne, A. L. D.; Aguilar, A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Cisneros, C.] Univ Nacl Autonoma Mexico, Inst Ciencias Fis, Cuernavaca 62251, Morelos, Mexico.
RP Habibi, M (reprint author), Univ Nevada, Dept Phys, MS 220, Reno, NV 89557 USA.
RI Kilcoyne, David/I-1465-2013
FU U. S. Department of Energy [DOE-FG02-03ER15424]
FX The authors are grateful to Dr. Ulyana Safronova for helpful discussions
concerning the electronic structure of these ions and for
identifications of metastable states. This research was supported by the
U. S. Department of Energy, Division of Chemical Sciences, Biosciences,
and Geosciences under Grant No. DOE-FG02-03ER15424.
NR 22
TC 14
Z9 14
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1050-2947
J9 PHYS REV A
JI Phys. Rev. A
PD SEP
PY 2009
VL 80
IS 3
AR 033407
DI 10.1103/PhysRevA.80.033407
PG 7
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 501LR
UT WOS:000270383900116
ER
PT J
AU Kanai, Y
Grossman, JC
AF Kanai, Yosuke
Grossman, Jeffrey C.
TI Role of exchange in density-functional theory for weakly interacting
systems: Quantum Monte Carlo analysis of electron density and
interaction energy
SO PHYSICAL REVIEW A
LA English
DT Article
ID GENERALIZED-GRADIENT APPROXIMATIONS; CARBON NANOTUBES; GROUND-STATE;
GAS; PSEUDOPOTENTIALS; CONSTRAINT; MOLECULES; ATOMS
AB We analyze the density-functional theory (DFT) description of weak interactions by employing diffusion and reptation quantum Monte Carlo (QMC) calculations, for a set of benzene-molecule complexes. While the binding energies depend significantly on the exchange-correlation approximation employed for DFT calculations, QMC calculations show that the electron density is accurately described within DFT, including the quantitative features in the reduced density gradient. We elucidate how the enhancement of the exchange-energy density at a large reduced density gradient plays a critical role in obtaining accurate DFT description of weakly interacting systems.
C1 [Kanai, Yosuke; Grossman, Jeffrey C.] Univ Calif Berkeley, Berkeley Nanosci & Nanoengn Inst, Berkeley, CA 94720 USA.
[Grossman, Jeffrey C.] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA.
RP Kanai, Y (reprint author), Lawrence Livermore Natl Lab, Condensed Matter & Mat Div, Livermore, CA 94550 USA.
EM ykanai@llnl.gov; JCG@mit.edu
RI Kanai, Yosuke/B-5554-2016
FU University of California, BerKeley [0425914]
FX We thank Lucas K. Wagner for fruitful discussions on quantum Monte Carlo
methodologies. This work was performed under the auspices of the
National Science Foundation by University of California, BerKeley under
grant no. 0425914.
NR 46
TC 16
Z9 16
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1050-2947
EI 1094-1622
J9 PHYS REV A
JI Phys. Rev. A
PD SEP
PY 2009
VL 80
IS 3
AR 032504
DI 10.1103/PhysRevA.80.032504
PG 5
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 501LR
UT WOS:000270383900076
ER
PT J
AU Pindzola, MS
Ludlow, JA
Colgan, J
AF Pindzola, M. S.
Ludlow, J. A.
Colgan, J.
TI Double ionization of H-2 by fast bare-ion collisions
SO PHYSICAL REVIEW A
LA English
DT Article
ID CLOSE-COUPLING CALCULATIONS; DOUBLE PHOTOIONIZATION; HYDROGEN MOLECULES;
R-MATRIX; HELIUM; IMPACT; SINGLE
AB A time-dependent close-coupling method is developed to treat the double ionization of H-2 by fast bare-ion collisions. At high incident energies, for which charge transfer to the projectile may be ignored, multipole expansions are made for the electron-electron and electron-projectile interactions in a fixed target nuclei coordinate system. The time-dependent Schrodinger equation for the six dimensional target electron wave function is reduced to a set of close-coupled equations on a four dimensional numerical lattice in (r(1), theta(1), r(2), theta(2)) center-of-mass spherical polar coordinates. Time-dependent close-coupling calculations are carried out for p+H-2 collisions at an incident energy of 1.0 MeV. The ratio of double to single ionization is found to be 0.3%, which is in reasonable agreement with experimental measurements.
C1 [Pindzola, M. S.; Ludlow, J. A.] Auburn Univ, Dept Phys, Auburn, AL 36849 USA.
[Colgan, J.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Pindzola, MS (reprint author), Auburn Univ, Dept Phys, Auburn, AL 36849 USA.
OI Colgan, James/0000-0003-1045-3858
FU U. S. Department of Energy
FX We would like to thank Dr. Francis Robicheaux of Auburn University for
several useful discussions. This work was supported in part by grants
from the U. S. Department of Energy. Computational work was carried out
at the National Energy Research Scientific Computing Center in Oakland,
California.
NR 26
TC 10
Z9 10
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1050-2947
J9 PHYS REV A
JI Phys. Rev. A
PD SEP
PY 2009
VL 80
IS 3
AR 032707
DI 10.1103/PhysRevA.80.032707
PG 6
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 501LR
UT WOS:000270383900100
ER
PT J
AU Sturm, FP
Schoffler, M
Lee, S
Osipov, T
Neumann, N
Kim, HK
Kirschner, S
Rudek, B
Williams, JB
Daughhetee, JD
Cocke, CL
Ueda, K
Landers, AL
Weber, T
Prior, MH
Belkacem, A
Dorner, R
AF Sturm, F. P.
Schoeffler, M.
Lee, S.
Osipov, T.
Neumann, N.
Kim, H. -K.
Kirschner, S.
Rudek, B.
Williams, J. B.
Daughhetee, J. D.
Cocke, C. L.
Ueda, K.
Landers, A. L.
Weber, Th.
Prior, M. H.
Belkacem, A.
Doerner, R.
TI Photoelectron and Auger-electron angular distributions of fixed-in-space
CO2
SO PHYSICAL REVIEW A
LA English
DT Article
ID MOMENTUM SPECTROSCOPY; RECOIL-ION; MOLECULES; H-2
AB We report a kinematically complete experiment of carbon 1s photoionization of CO2 including Auger decay and fragmentation. By measuring in coincidence of CO2 C(1s) photoelectrons and ion fragments using synchrotron light at several energies above the C(1s) threshold, we determine photoelectron angular distributions as well as Auger-electron angular distributions with full solid angle in the molecular fixed frame. We confirm recent unexpected results showing an asymmetry of the photoelectron angular distribution along the molecular axis after ionization of the C(1s) orbital. Our high statistics and high resolution measurement unveils asymmetric features in the photoelectron angular distribution which change as a function of the kinetic energy release. This finding provides strong evidence that varying C-O bondlengths are the main cause for these asymmetries. The Auger-electron angular distributions do not show strong correlation with the photoelectrons.
C1 [Sturm, F. P.; Schoeffler, M.; Neumann, N.; Kim, H. -K.; Kirschner, S.; Rudek, B.; Doerner, R.] Goethe Univ Frankfurt, Inst Kernphys, D-60438 Frankfurt, Germany.
[Sturm, F. P.; Schoeffler, M.; Lee, S.; Osipov, T.; Rudek, B.; Weber, Th.; Prior, M. H.; Belkacem, A.] Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA.
[Williams, J. B.; Daughhetee, J. D.; Landers, A. L.] Auburn Univ, Dept Phys, Auburn, AL 36849 USA.
[Cocke, C. L.] Kansas State Univ, Dept Phys, Manhattan, KS 66506 USA.
[Ueda, K.] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan.
RP Sturm, FP (reprint author), Goethe Univ Frankfurt, Inst Kernphys, Max von Laue Str 1, D-60438 Frankfurt, Germany.
EM sturm@atom.uni-frankfurt.de
RI Doerner, Reinhard/A-5340-2008; Landers, Allen/C-1213-2013; Weber,
Thorsten/K-2586-2013; Schoeffler, Markus/B-6261-2008; Rudek,
Benedikt/A-5100-2017
OI Doerner, Reinhard/0000-0002-3728-4268; Weber,
Thorsten/0000-0003-3756-2704; Schoeffler, Markus/0000-0001-9214-6848;
FU Department of Energy, Office of Basic Energy Sciences, Chemical Sciences
Division [DE-AC02-05CH11231]
FX We thank X.-J. Liu for motivating this experiment. Special thanks to H.
Bluhm, T. Tyliszczak, D. Kilcoyne, and the whole team of the ALS for
great support. We profited from discussion with W. M. McCurdy and T.
Rescigno. The work was supported by the Department of Energy, Office of
Basic Energy Sciences, Chemical Sciences Division under Contract No.
DE-AC02-05CH11231. Support by DAAD and DFG are gratefully acknowledged.
NR 27
TC 12
Z9 12
U1 2
U2 12
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9926
EI 2469-9934
J9 PHYS REV A
JI Phys. Rev. A
PD SEP
PY 2009
VL 80
IS 3
AR 032506
DI 10.1103/PhysRevA.80.032506
PG 6
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 501LR
UT WOS:000270383900078
ER
PT J
AU Acosta, VM
Bauch, E
Ledbetter, MP
Santori, C
Fu, KMC
Barclay, PE
Beausoleil, RG
Linget, H
Roch, JF
Treussart, F
Chemerisov, S
Gawlik, W
Budker, D
AF Acosta, V. M.
Bauch, E.
Ledbetter, M. P.
Santori, C.
Fu, K. -M. C.
Barclay, P. E.
Beausoleil, R. G.
Linget, H.
Roch, J. F.
Treussart, F.
Chemerisov, S.
Gawlik, W.
Budker, D.
TI Diamonds with a high density of nitrogen-vacancy centers for
magnetometry applications
SO PHYSICAL REVIEW B
LA English
DT Article
ID PARAMAGNETIC-RESONANCE; INFRARED-ABSORPTION; SYNTHETIC DIAMOND;
THRESHOLD ENERGY; DEFECT CENTERS; ELECTRON; SPECTRA; SPIN; DISPLACEMENT;
IRRADIATION
AB Nitrogen-vacancy (NV) centers in millimeter-scale diamond samples were produced by irradiation and subsequent annealing under varied conditions. The optical and spin-relaxation properties of these samples were characterized using confocal microscopy, visible and infrared absorption, and optically detected magnetic resonance. The sample with the highest NV(-) concentration, approximately 16 ppm (2.8 x 10(18) cm(-3)), was prepared with no observable traces of neutrally charged vacancy defects. The effective transverse spin-relaxation time for this sample was T(2)* = 118 (48) ns, predominately limited by residual paramagnetic nitrogen which was determined to have a concentration of 49(7) ppm. Under ideal conditions, the shot-noise limited sensitivity is projected to be similar to 150 fT/root Hz for a 100 mu m-scale magnetometer based on this sample. Other samples with NV(-) concentrations from 0.007 to 12 ppm and effective relaxation times ranging from 27 to over 291 ns were prepared and characterized.
C1 [Acosta, V. M.; Bauch, E.; Ledbetter, M. P.; Budker, D.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Bauch, E.] Tech Univ Berlin, D-10623 Berlin, Germany.
[Santori, C.; Fu, K. -M. C.; Barclay, P. E.; Beausoleil, R. G.] Hewlett Packard Labs, Palo Alto, CA 94304 USA.
[Roch, J. F.; Treussart, F.] Ecole Normale Super, CNRS, UMR 8537, Lab Photon Quant & Mol, F-94235 Cachan, France.
[Chemerisov, S.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Gawlik, W.] Jagiellonian Univ, Inst Phys, Ctr Magnetoopt Res, PL-30059 Krakow, Poland.
[Budker, D.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
RP Acosta, VM (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM vmacosta@berkeley.edu; budker@berkeley.edu
RI Barclay, Paul/A-4171-2009; Beausoleil, Raymond/C-5076-2009; Acosta,
Victor/G-8176-2011; TREUSSART, Francois/M-3274-2013; Budker,
Dmitry/F-7580-2016;
OI Barclay, Paul/0000-0002-9659-5883; TREUSSART,
Francois/0000-0002-1755-0688; Budker, Dmitry/0000-0002-7356-4814;
Acosta, Victor/0000-0003-0058-9954
FU ONRMURI; Polish Ministry of Science [NN 505 0920 33]
FX The authors would like to thank B. Patton and S. Rochester for help with
modeling and data visualization, T. Sauvage for proton irradiation, and
P. Hemmer for extensive comments and suggestions. We also thank V.
Bouchiat, C. Hovde, D. Twitchen, and R. Walsworth for providing helpful
comments, R. Segalman and J. Sun for providing the Cary 50 spectrometer,
and M. Donaldson and W. Vining for help with FTIR measurements. This
work was supported by ONRMURI and the Polish Ministry of Science (Grant
No. NN 505 0920 33).
NR 54
TC 130
Z9 130
U1 18
U2 74
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 11
AR 115202
DI 10.1103/PhysRevB.80.115202
PG 15
WC Physics, Condensed Matter
SC Physics
GA 501LK
UT WOS:000270383200060
ER
PT J
AU Aidhy, DS
Millett, PC
Desai, T
Wolf, D
Phillpot, SR
AF Aidhy, Dilpuneet S.
Millett, Paul C.
Desai, Tapan
Wolf, Dieter
Phillpot, Simon R.
TI Kinetically evolving irradiation-induced point defect clusters in UO2 by
molecular dynamics simulation
SO PHYSICAL REVIEW B
LA English
DT Article
ID URANIUM-DIOXIDE; DISPLACEMENT CASCADES; TRANSITION; OXIDES
AB The evolution of irradiation-induced point defects in UO2 is captured in molecular dynamics simulations. The approach used circumvents their creation during the ballistic phase of a traditional collision-cascade molecular dynamics simulation but rather focuses on their kinetic evolution. The simulations reveal that in the absence of defects on the cation sublattice, the defects initially present on the anion sublattice recombine and annihilate completely during equilibration. However, in the simultaneous presence of defects on both sublattices, Schottky defects are formed, thereby sequestering the oxygen vacancies. The resulting excess oxygen interstitials form cuboctahedral clusters, whose existence has previously been identified experimentally but whose generation mechanism has not been determined. It is concluded that the cation sublattice is primarily responsible for the radiation tolerance or intolerance of the material.
C1 [Aidhy, Dilpuneet S.; Phillpot, Simon R.] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA.
[Millett, Paul C.; Desai, Tapan; Wolf, Dieter] Idaho Natl Lab, Div Mat Sci, Idaho Falls, ID 83415 USA.
RP Phillpot, SR (reprint author), Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA.
EM sphil@mse.ufl.edu
RI Phillpot, Simon/J-9117-2012;
OI Phillpot, Simon/0000-0002-7774-6535
FU DOE NERI [DE-FC07-07ID14833]; DOE Idaho Operations Office
[DE-AC07-051D14517V]; DOE/BES
FX The work of the UF team was supported by DOE NERI under Contract No.
DE-FC07-07ID14833. The work of the INL team was supported through the
INL Laboratory Directed Research and Development program under DOE Idaho
Operations Office under Contract No. DE-AC07-051D14517V. We gratefully
acknowledge support from the DOE/BES funded Computational Materials
Science Network (CMSN) project on "Multiscale simulation of
thermomechanical processes in irradiated fission-reactor materials." D.
A. is grateful to Blas Uberuaga and David Andersson for useful
discussions and for the hospitality of INL during the period that most
of this work was performed.
NR 25
TC 21
Z9 21
U1 1
U2 14
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 10
AR 104107
DI 10.1103/PhysRevB.80.104107
PG 9
WC Physics, Condensed Matter
SC Physics
GA 501LJ
UT WOS:000270383100025
ER
PT J
AU Al-Hassanieh, KA
Batista, CD
Sengupta, P
Feiguin, AE
AF Al-Hassanieh, K. A.
Batista, C. D.
Sengupta, P.
Feiguin, A. E.
TI Robust pairing mechanism from repulsive interactions
SO PHYSICAL REVIEW B
LA English
DT Article
ID DENSITY-MATRIX RENORMALIZATION; STAGGERED-FIELD; PHASE-DIAGRAM; MODEL;
SUPERCONDUCTORS; CHAINS
AB We present a robust pairing mechanism that arises from repulsive electron-electron interactions. Our results demonstrate that the interplay between antiferromagnetism and delocalization leads to topological confinement of hole pairs in a simple two-band Hubbard Hamiltonian. By using density-matrix renormalization group (DMRG) we also demonstrate the presence of dominant superconducting correlations in one-dimensional systems over a wide range of realistic parameters.
C1 [Al-Hassanieh, K. A.; Batista, C. D.; Sengupta, P.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Feiguin, A. E.] Univ Maryland, Dept Phys, Condensed Matter Theory Ctr, College Pk, MD 20742 USA.
[Feiguin, A. E.] Univ Calif Santa Barbara, Microsoft Project Q, Santa Barbara, CA 93106 USA.
[Feiguin, A. E.] Univ Wyoming, Dept Phys & Astron, Laramie, WY 82071 USA.
RP Al-Hassanieh, KA (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RI Sengupta, Pinaki/B-6999-2011; Batista, Cristian/J-8008-2016
FU U.S. Department of Energy at Los Alamos National Laboratory
[DE-AC52-06NA25396]
FX The authors thank E. Dagotto, J. Bonca, S. Trugman, U. Schollwock, G.
Martins, and C. Busser for helpful discussions. This work was carried
out under the auspices of the National Nuclear Security Administration
of the U.S. Department of Energy at Los Alamos National Laboratory under
Contract No. DE-AC52-06NA25396.
NR 19
TC 3
Z9 3
U1 0
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 11
AR 115116
DI 10.1103/PhysRevB.80.115116
PG 5
WC Physics, Condensed Matter
SC Physics
GA 501LK
UT WOS:000270383200044
ER
PT J
AU Biswas, K
Lany, S
AF Biswas, Koushik
Lany, Stephan
TI Energetics of quaternary III-V alloys described by incorporation and
clustering of impurities
SO PHYSICAL REVIEW B
LA English
DT Article
ID THERMODYNAMICS; EPILAYERS; SYSTEMS; MODEL
AB The energetics of alloy formation is generally modeled either by explicit sampling of the possible alloy configurations or by considering only noninteracting impurities in the dilute limit. We describe a model that bridges the two approaches by taking into account the thermodynamic probability to form small clusters by association of impurities, thereby extending the validity of the impurity model to higher concentrations. Since we express the alloy energetics in terms of pair and cluster binding energies there is no need for computationally intensive sampling over the full configuration space. The application to the Ga(1-x)In(x)P(1-y)N(y) highlights the importance of short-range ordering due to "small atom/large atom" correlation in such quaternary III-V alloys.
C1 [Biswas, Koushik; Lany, Stephan] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Biswas, K (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
OI Lany, Stephan/0000-0002-8127-8885
FU U. S. Department of Energy [DE-AC36-08GO28308]
FX This work was funded by the U. S. Department of Energy under Contract
No. DE-AC36-08GO28308 through NREL's laboratory directed research and
development program. The use of MPP capabilities at the National Energy
Research Scientific Computing Center is gratefully acknowledged.
NR 20
TC 6
Z9 6
U1 2
U2 10
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 11
AR 115206
DI 10.1103/PhysRevB.80.115206
PG 6
WC Physics, Condensed Matter
SC Physics
GA 501LK
UT WOS:000270383200064
ER
PT J
AU Capan, C
Balicas, L
Murphy, TP
Palm, EC
Movshovich, R
Hall, D
Tozer, SW
Hundley, MF
Bauer, ED
Thompson, JD
Sarrao, JL
DiTusa, JF
Goodrich, RG
Fisk, Z
AF Capan, C.
Balicas, L.
Murphy, T. P.
Palm, E. C.
Movshovich, R.
Hall, D.
Tozer, S. W.
Hundley, M. F.
Bauer, E. D.
Thompson, J. D.
Sarrao, J. L.
DiTusa, J. F.
Goodrich, R. G.
Fisk, Z.
TI Unusual metamagnetism in CeIrIn5
SO PHYSICAL REVIEW B
LA English
DT Article
DE cerium compounds; de Haas-van Alphen effect; electrical resistivity;
Fermi liquid; Fermi surface; fluctuations in superconductors; heavy
fermion superconductors; iridium compounds; magnetic transitions;
magnetisation; metamagnetism; paramagnetic materials; phase diagrams;
quasiparticles; superconducting critical field; superconducting
transitions
ID FERMI-SURFACE; ELECTRON METAMAGNETISM; QUANTUM CRITICALITY;
MAGNETIC-PROPERTIES; RUTHENATE SR3RU2O7; ITINERANT; TRANSITION; DHVA;
MAGNETORESISTANCE; CERHIN5
AB We report a high-field investigation (up to 45 T) of the metamagnetic transition in CeIrIn5 with resistivity and de Haas-van Alphen (dHvA) effect measurements in the temperature range of 0.03-1 K. As the magnetic field is increased the resistivity increases, reaches a maximum at the metamagnetic critical field, and falls precipitously for fields just above the transition, while the amplitude of all measurable dHvA frequencies are significantly attenuated near the metamagnetic critical field. However, the dHvA frequencies and cyclotron masses are not substantially altered by the transition. In the low-field state, the resistivity is observed to increase toward low temperatures in a singular fashion, a behavior that is rapidly suppressed above the transition. Instead, in the high-field state, the resistivity monotonically increases with temperature with a dependence that is more singular than the iconic Fermi-liquid, temperature-squared behavior. Both the damping of the dHvA amplitudes and the increased resistivity near the metamagnetic critical field indicate an increased scattering rate for charge carriers consistent with critical fluctuation scattering in proximity to a phase transition. The dHvA amplitudes do not uniformly recover above the critical field, with some holelike orbits being entirely suppressed at high fields. These changes, taken as a whole, suggest that the metamagnetic transition in CeIrIn5 is associated with the polarization and localization of the heaviest of quasiparticles on the holelike Fermi surface.
C1 [Capan, C.; Fisk, Z.] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA.
[Capan, C.; DiTusa, J. F.; Goodrich, R. G.] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA.
[Balicas, L.; Murphy, T. P.; Palm, E. C.; Hall, D.; Tozer, S. W.] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA.
[Movshovich, R.; Hundley, M. F.; Bauer, E. D.; Thompson, J. D.; Sarrao, J. L.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Goodrich, R. G.] George Washington Univ, Dept Phys, Washington, DC 20052 USA.
RP Capan, C (reprint author), Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA.
RI Bauer, Eric/D-7212-2011;
OI Bauer, Eric/0000-0003-0017-1937
FU NSF [DMR-0084173, DMR-0804376]; DOE
FX We acknowledge fruitful discussions with B. Binz, I. Vekhter, F.
Ronning, P. Adams, A. Chubukov, P. Schlottmann, C. Varma, and D. Pines.
Work at Los Alamos was performed under the auspices of the U. S.
Department of Energy. A portion of this work was performed at the
National High Magnetic Field Laboratory, with support from the NSF
Cooperative Agreement No. DMR-0084173, by the State of Florida, and by
the DOE. Work at LSU was supported by NSF under Grant no. DMR-0804376.
NR 55
TC 11
Z9 11
U1 2
U2 15
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 9
AR 094518
DI 10.1103/PhysRevB.80.094518
PG 11
WC Physics, Condensed Matter
SC Physics
GA 501LI
UT WOS:000270383000088
ER
PT J
AU Chaudhury, RP
Yen, F
Lorenz, B
Sun, YY
Bezmaternykh, LN
Temerov, VL
Chu, CW
AF Chaudhury, R. P.
Yen, F.
Lorenz, B.
Sun, Y. Y.
Bezmaternykh, L. N.
Temerov, V. L.
Chu, C. W.
TI Magnetoelectric effect and spontaneous polarization in HoFe3(BO3)(4) and
Ho0.5Nd0.5Fe3(BO3)(4)
SO PHYSICAL REVIEW B
LA English
DT Article
ID IRON BORATE GDFE3(BO3)(4); PHASE-TRANSITIONS; NDFE3(BO3)(4);
MULTIFERROICS
AB The thermodynamic, magnetic, dielectric, and magnetoelectric properties of HoFe3(BO3)(4) and Ho0.5Nd0.5Fe3(BO3)(4) are investigated. Both compounds show a second order Neel transition above 30 K and a first-order spin reorientation transition below 10 K. HoFe3(BO3)(4) develops a spontaneous electrical polarization below the Neel temperature (T-N) which is diminished in external magnetic fields. No magnetic-field induced increase of the polarization could be observed in HoFe3(BO3)(4). In contrast, the solid solution Ho0.5Nd0.5Fe3(BO3)(4) exhibits both, a spontaneous polarization below T-N and a positive magnetoelectric effect at higher fields that extends to high temperatures. The superposition of spontaneous polarization, induced by the internal magnetic field in the ordered state, and the magnetoelectric polarizations due to the external field results in a complex behavior of the total polarization measured as a function of temperature and field.
C1 [Chaudhury, R. P.; Lorenz, B.; Sun, Y. Y.; Chu, C. W.] Univ Houston, TCSUH, Houston, TX 77204 USA.
[Chaudhury, R. P.; Lorenz, B.; Sun, Y. Y.; Chu, C. W.] Univ Houston, Dept Phys, Houston, TX 77204 USA.
[Yen, F.] SW Jiaotong Univ, Appl Superconduct Lab, Chengdu 610031, Sichuan, Peoples R China.
[Bezmaternykh, L. N.; Temerov, V. L.] Russian Acad Sci, Inst Phys, Siberian Div, Krasnoyarsk 660036, Russia.
[Chu, C. W.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Chu, C. W.] Hong Kong Univ Sci & Technol, Hong Kong, Hong Kong, Peoples R China.
RP Chaudhury, RP (reprint author), Univ Houston, TCSUH, Houston, TX 77204 USA.
RI Yen, Fei/C-8713-2015
OI Yen, Fei/0000-0003-2295-3040
FU NSF [DMR9804325]; Temple Foundation; State of Texas through the TC-SUH;
DoE
FX This work is supported in part by NSF Grant No. DMR9804325, the T. L. L.
Temple Foundation, the J.J. and R. Moores Endowment, and the State of
Texas through the TC-SUH and at LBNL by the DoE.
NR 35
TC 50
Z9 50
U1 0
U2 8
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 10
AR 104424
DI 10.1103/PhysRevB.80.104424
PG 11
WC Physics, Condensed Matter
SC Physics
GA 501LJ
UT WOS:000270383100067
ER
PT J
AU Chen, XQ
Fu, CL
Franchini, C
Podloucky, R
AF Chen, Xing-Qiu
Fu, C. L.
Franchini, C.
Podloucky, R.
TI Hybrid density-functional calculation of the electronic and magnetic
structures of tetragonal CuO
SO PHYSICAL REVIEW B
LA English
DT Article
DE antiferromagnetic materials; charge transfer states; copper compounds;
density functional theory; doping; epitaxial growth; exchange
interactions (electron); magnetic impurities; magnetic structure; Neel
temperature
ID CUPRIC OXIDE; NEUTRON-SCATTERING; TEMPERATURE; CU2O; CRYSTALS; METALS;
STATE
AB The electronic and magnetic properties of recently synthesized tetragonal CuO with c/a>1 is calculated by means of hybrid density-functional theory. We predict that this tetragonal phase orders antiferromagnetically and has an exceptionally high Neeacutel temperature T(N)approximate to 800 K, which makes it an ideal candidate for doping experiments and a potential parent of superconductors. The electronic structure is characterized by a charge-transfer gap of 2.7 eV whereas the magnetic properties are dominated by the antiferromagnetic Cu-O-Cu interactions along the nearest-neighbor [100] direction. In addition, we predict the second tetragonal CuO phase with a c/a ratio < 1 with a different antiferromagnetic ordering and a similar high T(N). We suggest that this phase could be synthesized by epitaxial growth.
C1 [Chen, Xing-Qiu; Fu, C. L.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
[Franchini, C.] Univ Vienna, Fac Phys, A-1090 Vienna, Austria.
[Franchini, C.] Ctr Computat Mat Sci, A-1090 Vienna, Austria.
[Podloucky, R.] Univ Vienna, Inst Phys Chem, A-1090 Vienna, Austria.
RP Chen, XQ (reprint author), Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
RI Franchini, Cesare/B-2084-2009
OI Franchini, Cesare/0000-0002-7990-2984
FU U.S. Department of Energy; National Energy Research Computing Center
FX Research at Oak Ridge National Laboratory was sponsored by the Division
of Materials Sciences and Engineering, U.S. Department of Energy under
contract with UT-Battelle, LLC. This research used resources of the
National Energy Research Computing Center, which is supported by the
Office of Science of the U. S. Department of Energy. R. P. acknowledges
the support of the Austrian Fonds zur Forderung der wissenschaftlichen
Forschung within the Joint Research Program S90. C. F. was supported in
part by the Seventh Framework Programme of the European Community
through the ATHENA project.
NR 26
TC 19
Z9 19
U1 3
U2 16
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 9
AR 094527
DI 10.1103/PhysRevB.80.094527
PG 5
WC Physics, Condensed Matter
SC Physics
GA 501LI
UT WOS:000270383000097
ER
PT J
AU Cuenya, BR
Croy, JR
Ono, LK
Naitabdi, A
Heinrich, H
Keune, W
Zhao, J
Sturhahn, W
Alp, EE
Hu, M
AF Cuenya, B. Roldan
Croy, Jason R.
Ono, L. K.
Naitabdi, A.
Heinrich, H.
Keune, W.
Zhao, J.
Sturhahn, W.
Alp, E. E.
Hu, M.
TI Phonon density of states of self-assembled isolated Fe-rich Fe-Pt alloy
nanoclusters
SO PHYSICAL REVIEW B
LA English
DT Article
ID NUCLEAR RESONANT SCATTERING; SYNCHROTRON-RADIATION; MOLECULAR-DYNAMICS;
PHASE-TRANSITIONS; INVAR-ALLOYS; NANOPARTICLES; SEGREGATION; FE3PT;
IRON; 1ST-PRINCIPLES
AB The Fe-projected phonon density of states (PDOS) of monolayer-thick films of self-assembled, size-selected, isolated (57)Fe(1-x)Pt(x) alloy nanoclusters (NCs) (height: similar to 2 nm, diameter: similar to 8 nm) supported on flat SiO(2)/Si(111) substrates has been measured by nuclear resonant inelastic x-ray scattering. The samples were characterized by atomic force microscopy (AFM), transmission electron microscopy, and x-ray photoelectron spectroscopy (XPS). Surface segregation of Pt and PtSi formation at the NC surface due to the sample-preparation process is inferred from the XPS data. As compared to the bulk, pronounced modifications of the PDOS beyond the bulk cut-off energy are observed in bcc (57)Fe(0.8)Pt(0.2) (core)/PtSi(shell) NCs. By contrast, the PDOS of fcc (57)Fe(0.75)Pt(0.25) (core)/PtSi(shell) NCs retains features of bulk ordered Fe(3)Pt Invar alloys (presumably due to a thicker PtSi shell), in particular, the transverse-acoustic [110]TA(1) mode near 9 meV. Apparently, this mode is not affected by size effects. The existence of the [110]TA(1) phonon mode is a prerequisite for the persistence of Invar-related effects in Fe(3)Pt NCs. Important thermodynamic properties of the NCs are derived, such as the vibrational entropy per atom.
C1 [Cuenya, B. Roldan; Croy, Jason R.; Ono, L. K.; Naitabdi, A.; Heinrich, H.] Univ Cent Florida, Dept Phys, Orlando, FL 32816 USA.
[Cuenya, B. Roldan] Univ Cent Florida, Nanosci Technol Ctr, Orlando, FL 32816 USA.
[Heinrich, H.] Univ Cent Florida, Adv Mat Proc & Anal Ctr, Orlando, FL 32816 USA.
[Keune, W.] Univ Duisburg Essen, Fachbereich Phys, D-47048 Duisburg, Germany.
[Keune, W.] Max Planck Inst Mikrostrukturphys, D-06120 Halle, Germany.
[Zhao, J.; Sturhahn, W.; Alp, E. E.; Hu, M.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Cuenya, BR (reprint author), Univ Cent Florida, Dept Phys, Orlando, FL 32816 USA.
EM roldan@physics.ucf.edu
RI Naitabdi, Ahmed/F-5758-2014; Roldan Cuenya, Beatriz/L-1874-2016
OI Naitabdi, Ahmed/0000-0002-1307-5584; Roldan Cuenya,
Beatriz/0000-0002-8025-307X
FU NSF [CAREER-DMR-0448491, DMR-0906562]; U. S. DOE [DE-AC02-06CH11357]
FX Discussions with Ralf Meyer (Sudbury), M. Gruner, and P. Entel
(Duisburg-Essen (are greatly appreciated. This work was supported by NSF
(Grants No. CAREER-DMR-0448491 and No. DMR-0906562 (and U. S. DOE (Grant
No. DE-AC02-06CH11357).
NR 52
TC 15
Z9 15
U1 1
U2 17
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 12
AR 125412
DI 10.1103/PhysRevB.80.125412
PG 7
WC Physics, Condensed Matter
SC Physics
GA 501LL
UT WOS:000270383300113
ER
PT J
AU Das, N
Tsui, S
Xue, YY
Wang, YQ
Chu, CW
AF Das, N.
Tsui, S.
Xue, Y. Y.
Wang, Y. Q.
Chu, C. W.
TI Kinetics and relaxation of electroresistance in transition metal oxides:
Model for resistive switching
SO PHYSICAL REVIEW B
LA English
DT Article
ID AMORPHOUS-SILICON; DIFFUSION; INTERFACE; RESISTANCE
AB The kinetics of electric-field-induced resistive switching across metal (Ag)-Pr0.7Ca0.3MnO3 interfaces has been investigated. The resistance hysteresis Delta R varies with the pulse amplitude V-0 roughly as a step function with existence of a threshold voltage V-t for a fixed switching pulses width T-w. On the other hand, the Delta R varies with the pulse width (T-w) as a two-stage sequence at a fixed V-0: an initial exponential rise with a time constant tau(S) approximate to 2 x 10(-7) s and a slow linearly increasing tail. The slow linear part is dominant only in the quasi-dc switch (pulse width similar to a few seconds) below V-t but negligibly small above it. The retentions of the Delta R corresponding to the two stages are also extremely different, indicating that different underlying processes are involved. The relaxation time (tau(R)) is 10(8) s (similar to year) or higher for the sub-mu s switching, in strong contrast with the total disappearance of the Delta R after a few days for subthreshold (V-0 << V-t) quasi-dc switch. Different mechanisms, therefore, dominate the two different stages. More results obtained from time dependence study and impedance spectroscopy suggest that defect creation/annihilation, such as broken bonds under field, is likely the mechanism for the sub-mu s switching and that a slow accumulative process (like diffusion) of defects may be responsible for the subthreshold quasi-dc switch. Many observations further suggest that the accumulative process is much more complicated than simple migration/diffusion of the pre-existing defects.
C1 [Das, N.; Tsui, S.; Xue, Y. Y.; Wang, Y. Q.; Chu, C. W.] Univ Houston, Dept Phys & TCSUH, Houston, TX 77204 USA.
[Chu, C. W.] Hong Kong Univ Sci & Technol, Kowloon, Hong Kong, Peoples R China.
[Chu, C. W.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Das, N (reprint author), Univ Houston, Dept Phys & TCSUH, Houston, TX 77204 USA.
FU U.S. Air Force Office of Scientific Research; T.L.L. Temple Foundation;
John J. and Rebecca Moores Endowment; State of Texas; Director, Office
of Science, Office of Basic Energy Sciences, Division of Materials
Sciences and Engineering of the U.S. Department of Energy
[DE-AC03-76SF00098]
FX The work in Houston is supported in part by the U.S. Air Force Office of
Scientific Research, the T.L.L. Temple Foundation, the John J. and
Rebecca Moores Endowment, and the State of Texas through the Texas
Center for Superconductivity at the University of Houston; and at
Lawrence Berkeley Laboratory by the Director, Office of Science, Office
of Basic Energy Sciences, Division of Materials Sciences and Engineering
of the U.S. Department of Energy under Contract No. DE-AC03-76SF00098.
NR 31
TC 6
Z9 6
U1 0
U2 15
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 11
AR 115411
DI 10.1103/PhysRevB.80.115411
PG 8
WC Physics, Condensed Matter
SC Physics
GA 501LK
UT WOS:000270383200123
ER
PT J
AU Das, S
Kreyssig, A
Nandi, S
Goldman, AI
Johnston, DC
AF Das, S.
Kreyssig, A.
Nandi, S.
Goldman, A. I.
Johnston, D. C.
TI Absence of structural correlations of magnetic defects in the
heavy-fermion compound LiV2O4
SO PHYSICAL REVIEW B
LA English
DT Article
ID TRANSITION-METAL OXIDE
AB Magnetic defects arising from structural imperfections have pronounced effects on the magnetic properties of the face-centered cubic normal-spinel structure compound LiV2O4. High-energy x-ray diffraction studies were performed on LiV2O4 single crystals to search for superstructure peaks or other evidence of spatial correlations in the arrangement of the crystal defects present in the lattice. Entire reciprocal lattice planes were mapped out with the help of synchrotron radiation. No noticeable differences in the x-ray diffraction data between a crystal with high magnetic defect concentration and a crystal with low magnetic defect concentration were found. This indicates the absence of any long-range periodicity or short-range correlations in the arrangements of the crystal/magnetic defects.
C1 [Das, S.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
RP Das, S (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
FU Department of Energy-Basic Energy Sciences [DEAC02-07CH11358]; U.S.
Department of Energy, Office of Science [DE-AC0206CH11357,
DE-AC02-07CH11358]
FX We thank D. Robinson for assistance with the x-ray diffraction
measurements at the Advanced Photon Source. Work at the Ames Laboratory
was supported by the Department of Energy-Basic Energy Sciences under
Contract No. DEAC02-07CH11358. Use of the Advanced Photon Source (APS)
was supported by the U.S. Department of Energy, Office of Science, under
Contract No. DE-AC0206CH11357. The Midwest Universities Collaborative
Access Team (MUCAT) sector at the APS is supported by the U.S.
Department of Energy, Office of Science, through the Ames Laboratory
under Contract No. DE-AC02-07CH11358.
NR 8
TC 1
Z9 1
U1 0
U2 7
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 10
AR 104401
DI 10.1103/PhysRevB.80.104401
PG 5
WC Physics, Condensed Matter
SC Physics
GA 501LJ
UT WOS:000270383100044
ER
PT J
AU Dordevic, SV
Kohlman, LW
Stojilovic, N
Hu, RW
Petrovic, C
AF Dordevic, S. V.
Kohlman, L. W.
Stojilovic, N.
Hu, Rongwei
Petrovic, C.
TI Signatures of electron-boson coupling in the half-metallic ferromagnet
Mn5Ge3: Study of electron self-energy Sigma(omega) obtained from
infrared spectroscopy
SO PHYSICAL REVIEW B
LA English
DT Article
ID SPIN POLARIZATION; ELECTRODYNAMICS
AB We report results of our infrared and optical spectroscopy study of a half-metallic ferromagnet Mn5Ge3. This compound is currently being investigated as a potential injector of spin-polarized currents into germanium. Infrared measurements have been performed over a broad frequency (70-50000 cm(-1)) and temperature (10-300 K) range. From the complex optical conductivity sigma(omega), we extract the electron self-energy Sigma(omega). The calculation of Sigma(omega) is based on numerical algorithms for solution of systems of nonlinear equations. The obtained self-energy provides insight into electron correlations in Mn5Ge3. In particular, it reveals that charge carriers may be coupled to bosonic modes, possibly of magnetic origin.
C1 [Dordevic, S. V.; Kohlman, L. W.] Univ Akron, Dept Phys, Akron, OH 44325 USA.
[Stojilovic, N.] John Carroll Univ, Dept Phys, Cleveland, OH 44118 USA.
[Hu, Rongwei; Petrovic, C.] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA.
[Hu, Rongwei] Brown Univ, Dept Phys, Providence, RI 02912 USA.
RP Dordevic, SV (reprint author), Univ Akron, Dept Phys, Akron, OH 44325 USA.
EM dsasa@uakron.edu
RI Hu, Rongwei/E-7128-2012; Petrovic, Cedomir/A-8789-2009
OI Petrovic, Cedomir/0000-0001-6063-1881
FU U.S. Department of Energy [DE-AC02-98CH10886]
FX We thank K. S. Burch for bringing Ref. 20 to our attention and D. N.
Basov, C. C. Homes, V. Yu. Irkhin, and T. Timusk for critical reading of
the paper. Special thanks to R. D. Ramsier for the use of his equipment.
Part of this research was carried out at the Brookhaven National
Laboratory, which is operated for the U.S. Department of Energy by
Brookhaven Science Associates (Grant No. DE-AC02-98CH10886).
NR 32
TC 5
Z9 5
U1 0
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 11
AR 115114
DI 10.1103/PhysRevB.80.115114
PG 5
WC Physics, Condensed Matter
SC Physics
GA 501LK
UT WOS:000270383200042
ER
PT J
AU Du, MH
Zhang, SB
AF Du, Mao-Hua
Zhang, S. B.
TI Impurity-bound small polarons in ZnO: Hybrid density functional
calculations
SO PHYSICAL REVIEW B
LA English
DT Article
ID HARTREE-FOCK; ZINC OXIDE; AB-INITIO; DOPED ZNO; LITHIUM; CRYSTALS;
ACCEPTOR; DONOR
AB Hybrid density functional calculations are performed to study the electronic and optical properties of substitutional Li and Na in ZnO. Our calculations correctly show hole localizations at neutral Li(Zn)(0) and Na(Zn)(0), which lead to the formation of small polarons as observed experimentally. This is in contrast to previous local-density and generalized gradient calculations that showed delocalized holes. The calculated localization energies are, however, still noticeably smaller than the available experimental values. Our analysis of the discrepancies suggests that further improvement of the theory and a refinement of the experimental values are both required.
C1 [Du, Mao-Hua] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Zhang, S. B.] Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY 12180 USA.
RP Du, MH (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RI Du, Mao-Hua/B-2108-2010; Krausnick, Jennifer/D-6291-2013; Zhang,
Shengbai/D-4885-2013
OI Du, Mao-Hua/0000-0001-8796-167X; Zhang, Shengbai/0000-0003-0833-5860
FU U. S. DOE Office of Nonproliferation Research and Development; Oak Ridge
National Laboratory
FX We thank B. K. Meyer for helpful discussions. This work was supported by
U. S. DOE Office of Nonproliferation Research and Development NA22 and
Oak Ridge National Laboratory LDRD program. Computations were performed
at the DoD Major Shared Resource Center at ASC.
NR 38
TC 51
Z9 51
U1 1
U2 20
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 11
AR 115217
DI 10.1103/PhysRevB.80.115217
PG 5
WC Physics, Condensed Matter
SC Physics
GA 501LK
UT WOS:000270383200075
ER
PT J
AU Fluegel, B
Mascarenhas, A
Geisz, JF
AF Fluegel, B.
Mascarenhas, A.
Geisz, J. F.
TI Polarized photoluminescence from point emitters in ordered GaxIn1-xP
SO PHYSICAL REVIEW B
LA English
DT Article
ID INTRINSIC QUANTUM DOTS; GAINP2; ALLOYS; GA0.52IN0.48P; (GAIN)P
AB A wide-field microphotoluminescence study of ordered GaxIn1-xP reveals spatially isolated submicron emission centers that emit in a spectral band 20 meV below previously studied PL features. The density of these centers is correlated with the presence of sharp PL lines reported in the low-energy PL band. Polarization analysis shows that many centers are very highly linearly polarized, contrary to models of quantum disks aligned at antiphase boundaries normal to the ordering direction. Orientations of the linearly polarized centers are found in some cases to be highly aligned along specific crystal directions that are not simply related to ordering.
C1 [Fluegel, B.; Mascarenhas, A.; Geisz, J. F.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Fluegel, B (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA.
FU Department of Energy Office of Science, Basic Energy Sciences
[DE-AC36-08GO28308]
FX We acknowledge the financial support of the Department of Energy Office
of Science, Basic Energy Sciences under Grant No. DE-AC36-08GO28308. We
thank Yong Zhang and S. P. Ahrenkiel for critical discussions and P.
Ernst for use of samples.
NR 16
TC 1
Z9 1
U1 1
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 12
AR 125333
DI 10.1103/PhysRevB.80.125333
PG 4
WC Physics, Condensed Matter
SC Physics
GA 501LL
UT WOS:000270383300100
ER
PT J
AU Frenzel, A
Qazilbash, MM
Brehm, M
Chae, BG
Kim, BJ
Kim, HT
Balatsky, AV
Keilmann, F
Basov, DN
AF Frenzel, A.
Qazilbash, M. M.
Brehm, M.
Chae, Byung-Gyu
Kim, Bong-Jun
Kim, Hyun-Tak
Balatsky, A. V.
Keilmann, F.
Basov, D. N.
TI Inhomogeneous electronic state near the insulator-to-metal transition in
the correlated oxide VO2
SO PHYSICAL REVIEW B
LA English
DT Article
ID FIELD OPTICAL MICROSCOPY; HIGH-TEMPERATURE SUPERCONDUCTORS; ELASTIC
LIGHT-SCATTERING; MOTT TRANSITION; THIN-FILMS; BI2SR2CACU2O8+DELTA;
DEPOSITION; TIP
AB We investigate the percolative insulator-to-metal transition (IMT) in films of the correlated material vanadium dioxide (VO2). Scattering-type scanning near-field infrared microscopy and atomic force microscopy were used to explore the relationship between the nucleation of metallic regions and the topography in insulating VO2. We demonstrate that the IMT begins within 10 nm from grain boundaries and crevices by using mean curvature and statistical analysis. We also observe coexistence of insulating and metallic domains in a single crystalline grain that points to intrinsic inhomogeneity in VO2 due to competing electronic phases in the IMT regime.
C1 [Frenzel, A.; Qazilbash, M. M.; Basov, D. N.] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA.
[Brehm, M.] Max Planck Inst Biochem, Abt Mol Strukturbiol, D-82152 Munich, Germany.
[Brehm, M.] Ctr NanoSci, D-82152 Munich, Germany.
[Chae, Byung-Gyu; Kim, Bong-Jun; Kim, Hyun-Tak] Elect & Telecommun Res Inst, IT Convergence & Components Lab, Taejon 305350, South Korea.
[Balatsky, A. V.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Balatsky, A. V.] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA.
[Keilmann, F.] Max Planck Inst Quantum Opt, Munich Ctr Adv Photon, D-85748 Garching, Germany.
[Keilmann, F.] Ctr NanoSci, D-85748 Garching, Germany.
RP Frenzel, A (reprint author), Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA.
EM mumtaz@physics.ucsd.edu
RI Frenzel, Alex/E-4133-2015
FU U.S. Department of Energy [DE-FG03-00ER45799]; Deutsche
Forschungsgemeinschaft Cluster of Excellence Munich-Centre for Advanced
Photonics; Electronics and Telecommunications Research Institute (ETRI),
Korea
FX The authors thank G. O. Andreev for discussions. This work was supported
by the U.S. Department of Energy under Grant No. DE-FG03-00ER45799, the
Deutsche Forschungsgemeinschaft Cluster of Excellence Munich-Centre for
Advanced Photonics, and the Electronics and Telecommunications Research
Institute (ETRI), Korea.
NR 35
TC 49
Z9 49
U1 2
U2 47
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 11
AR 115115
DI 10.1103/PhysRevB.80.115115
PG 7
WC Physics, Condensed Matter
SC Physics
GA 501LK
UT WOS:000270383200043
ER
PT J
AU Galperin, M
Saito, K
Balatsky, AV
Nitzan, A
AF Galperin, Michael
Saito, Keiji
Balatsky, Alexander V.
Nitzan, Abraham
TI Cooling mechanisms in molecular conduction junctions
SO PHYSICAL REVIEW B
LA English
DT Article
ID THERMAL CONDUCTANCE; NANOSCALE CONDUCTORS; TRANSPORT; QUANTUM;
SPECTROSCOPY; TEMPERATURE; THERMOMETRY; BARRIER; SILICON; DEVICES
AB While heating of a current carrying Ohmic conductors is an obvious consequence of the diffusive nature of the conduction in such systems, current-induced cooling has been recently reported in some molecular conduction junctions. In this paper, we demonstrate by simple models the possibility of cooling molecular junctions under applied bias, and discuss several mechanisms for such an effect. Our model is characterized by single electron tunneling between electrodes represented by free electron reservoirs through a system characterized by its electron levels, nuclear vibrations and their structures. We consider cooling mechanisms resulting from (a) cooling of one electrode surface by tunneling-induced depletion of high-energy electrons; (b) cooling by coherent sub resonance electronic transport analogous to atomic laser-induced cooling and (c) the incoherent analog of process (b)-cooling by driven activated transport. The non-equilibrium Green function formulation of junction transport is used in the first two cases, while a master equation approach is applied in the analysis of the third.
C1 [Galperin, Michael] Univ Calif San Diego, Dept Chem & Biochem, La Jolla, CA 92093 USA.
[Saito, Keiji] Univ Tokyo, Grad Sch Sci, Tokyo 1130033, Japan.
[Saito, Keiji] JST, CREST, Kawaguchi, Saitama 3320012, Japan.
[Balatsky, Alexander V.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Nitzan, Abraham] Tel Aviv Univ, Sch Chem, IL-69978 Tel Aviv, Israel.
RP Galperin, M (reprint author), Univ Calif San Diego, Dept Chem & Biochem, La Jolla, CA 92093 USA.
RI Abraham, Nitzan/A-9963-2008; saito, keiji/A-4593-2010; Galperin,
Michael/B-2838-2011
OI Galperin, Michael/0000-0002-1401-5970
NR 65
TC 55
Z9 57
U1 2
U2 18
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 11
AR 115427
DI 10.1103/PhysRevB.80.115427
PG 12
WC Physics, Condensed Matter
SC Physics
GA 501LK
UT WOS:000270383200139
ER
PT J
AU Granroth, S
Knut, R
Marcellini, M
Andersson, G
Svensson, S
Karis, O
Gorgoi, M
Schafers, F
Braun, W
Eberhardt, W
Olovsson, W
Holmstrom, E
Martensson, N
AF Granroth, Sari
Knut, Ronny
Marcellini, Moreno
Andersson, Gabriella
Svensson, Svante
Karis, Olof
Gorgoi, Mihaela
Schaefers, Franz
Braun, Walter
Eberhardt, Wolfgang
Olovsson, Weine
Holmstroem, Erik
Martensson, Nils
TI Investigation of interface properties of Ni/Cu multilayers by high
kinetic energy photoelectron spectroscopy
SO PHYSICAL REVIEW B
LA English
DT Article
DE ab initio calculations; alloying; chemical shift; copper; diffusion;
interface structure; magnetic multilayers; nickel; X-ray photoelectron
spectra
ID X-RAY PHOTOELECTRON; CU-NI ALLOYS; SURFACE SEGREGATION;
ELECTRONIC-STRUCTURE; PHOTOEMISSION-SPECTROSCOPY; CHARGE-TRANSFER; PT
ALLOYS; AG-PD; GROWTH; SHIFTS
AB High kinetic-energy photoelectron spectroscopy (HIKE) or hard x-ray photoelectron spectroscopy has been used to investigate the alloying of Ni/Cu (100) multilayers. Relative intensities of the corelevels and their chemical shifts derived from binding energy changes are shown to give precise information on physicochemical properties and quality of the buried layers. Interface roughening, including kinetic properties such as the rate of alloying, and temperature effects on the processes can be analyzed quantitatively. Using HIKE, we have been able to precisely follow the deterioration of the multilayer structure at the atomic scale and observe the diffusion of the capping layer into the multilayer structure which in turn is found to lead to a segregation in the ternary system. This is of great importance for future research on multilayered systems of this kind. Our experimental data are supplemented by first-principles theoretical calculations of the core-level shifts for a ternary alloy to allow for modeling of the influence of capping materials on the chemical shifts.
C1 [Granroth, Sari; Knut, Ronny; Marcellini, Moreno; Andersson, Gabriella; Svensson, Svante; Karis, Olof] Uppsala Univ, Dept Phys & Mat Sci, SE-75121 Uppsala, Sweden.
[Gorgoi, Mihaela; Schaefers, Franz; Braun, Walter; Eberhardt, Wolfgang] BESSY, D-12489 Berlin, Germany.
[Olovsson, Weine] Kyoto Univ, Dept Mat Sci & Engn, Sakyo Ku, Kyoto 6068501, Japan.
[Holmstroem, Erik] Univ Austral Chile, Inst Fis, Fac Ciencias, Valdivia, Chile.
[Holmstroem, Erik] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Martensson, Nils] Lund Univ, Max Lab, S-22100 Lund, Sweden.
[Granroth, Sari] Univ Turku, Dept Phys & Astron, FIN-20014 Turku, Finland.
RP Granroth, S (reprint author), Uppsala Univ, Dept Phys & Mat Sci, SE-75121 Uppsala, Sweden.
EM sari.mattila@fysik.uu.se
RI Holmstrom, Erik/A-5308-2009; Marcellini, Moreno/H-1011-2011; Svensson,
Svante/G-1150-2012; Gorgoi, Mihaela/N-8831-2014;
OI Holmstrom, Erik/0000-0002-1198-3861; Svensson,
Svante/0000-0002-2978-1870; Olovsson, Weine/0000-0002-2904-0108; Karis,
Olof/0000-0001-6406-217X; Marcellini, Moreno/0000-0002-1434-5611
FU Swedish Research Council (VR); Alice Wallenberg Foundation (KAW); Goran
Gustafsson Foundation in Science and Medicine; FONDECYT [11070115]; UACH
DID [SR-2008-0]; Anillo ACT [24/2006]
FX The authors are grateful to the Swedish Research Council (VR), the Knut
and Alice Wallenberg Foundation (KAW), and the Goran Gustafsson
Foundation in Science and Medicine for financial support. E. H. would
like to thank the support by FONDECYT Grant No. 11070115, UACH DID Grant
No. SR-2008-0, and Anillo ACT Grant No. 24/2006. S. G. would like to
thank K. Kokko for the discussions related to the segregation process.
NR 48
TC 18
Z9 18
U1 1
U2 22
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 9
AR 094104
DI 10.1103/PhysRevB.80.094104
PG 9
WC Physics, Condensed Matter
SC Physics
GA 501LI
UT WOS:000270383000027
ER
PT J
AU Grbic, MS
Barisic, N
Dulcic, A
Kupcic, I
Li, Y
Zhao, X
Yu, G
Dressel, M
Greven, M
Pozek, M
AF Grbic, M. S.
Barisic, N.
Dulcic, A.
Kupcic, I.
Li, Y.
Zhao, X.
Yu, G.
Dressel, M.
Greven, M.
Pozek, M.
TI Microwave measurements of the in-plane and c-axis conductivity in
HgBa2CuO4+delta: Discriminating between superconducting fluctuations and
pseudogap effects
SO PHYSICAL REVIEW B
LA English
DT Article
DE barium compounds; doping; high-temperature superconductors; mercury
compounds; superconducting energy gap
ID TUNNELING SPECTROSCOPY; GAP; BI2SR2CACU2O8+DELTA; CRYSTALS; CAVITY;
ORDER; MODEL
AB An approach to microwave measurements is used in order to determine both, the in-plane and out-of-plane conductivity of the high-T-c superconductor HgBa2CuO4+delta near optimal doping. Unlike the ab-plane conductivity, the c-axis conductivity is highly sensitive to superconducting fluctuations. From a single c-axis data set, we can clearly discern the opening of the pseudogap at T-*=185(15) K, the appearance of the superconducting fluctuations at a much lower temperature T-'=105(2) K, and the full transition to the superconducting state at the critical temperature T-c=94.3 K. Thus, with the present high sensitivity, we establish that the extent of the superconducting fluctuations is only about 10 K above T-c.
C1 [Grbic, M. S.; Dulcic, A.; Kupcic, I.; Pozek, M.] Univ Zagreb, Fac Sci, Dept Phys, HR-10002 Zagreb, Croatia.
[Barisic, N.; Zhao, X.] Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA.
[Barisic, N.; Dressel, M.] Univ Stuttgart, Inst Phys 1, D-70550 Stuttgart, Germany.
[Li, Y.; Yu, G.] Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
[Zhao, X.] Jilin Univ, Coll Chem, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Peoples R China.
[Greven, M.] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA.
[Greven, M.] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA.
RP Grbic, MS (reprint author), Univ Zagreb, Fac Sci, Dept Phys, POB 331, HR-10002 Zagreb, Croatia.
EM mpozek@phy.hr
RI Pozek, Miroslav/B-9417-2009; Dressel, Martin/D-3244-2012; Grbic, Mihael
S./I-5912-2014; Yu, Guichuan/K-4025-2014; Barisic, Neven/E-4246-2015
OI Pozek, Miroslav/0000-0002-4435-0243;
FU Croatian Ministry of Science, Education and Sports [119-1191458-1022,
119-1191458-0512]; U. S. Department of Energy [DE-AC02-76SF00515]; U.S.
National Science Foundation [DMR-0705086]; Alexander von Humboldt
foundation
FX We thank S. Barisic for helpful comments. Work was supported by grants
from Croatian Ministry of Science, Education and Sports (Projects No.
119-1191458-1022 and No. 119-1191458-0512) and by the U.S. Department of
Energy under Contract No. DE-AC02-76SF00515, by the U.S. National
Science Foundation under Grant No. DMR-0705086. N.B. acknowledges the
Alexander von Humboldt foundation.
NR 32
TC 18
Z9 18
U1 1
U2 11
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 9
AR 094511
DI 10.1103/PhysRevB.80.094511
PG 5
WC Physics, Condensed Matter
SC Physics
GA 501LI
UT WOS:000270383000081
ER
PT J
AU Hancock, JN
Chabot-Couture, G
Li, Y
Petrakovskii, GA
Ishii, K
Jarrige, I
Mizuki, J
Devereaux, TP
Greven, M
AF Hancock, J. N.
Chabot-Couture, G.
Li, Y.
Petrakovskii, G. A.
Ishii, K.
Jarrige, I.
Mizuki, J.
Devereaux, T. P.
Greven, M.
TI Resonant inelastic x-ray scattering in electronically
quasi-zero-dimensional CuB2O4
SO PHYSICAL REVIEW B
LA English
DT Article
DE band structure; copper compounds; X-ray scattering
ID COPPER METABORATE
AB We present a resonant inelastic scattering (RIXS) study using of CuB2O4, which contains a lattice of CuO4 plaquettes electronically isolated by B+3 ions. The observed Cu K-edge spectra show a small number of well-separated features, and the simple electronic structure of CuB2O4 allows us to explore RIXS phenomenology. We find a low-energy feature that cannot be attributed to the same charge-transfer excitation discussed in other cuprates and is likely a d -> d transition thought to be forbidden under common considerations of K-edge RIXS.
C1 [Hancock, J. N.; Devereaux, T. P.; Greven, M.] Dept Photon Sci, Stanford, CA 94309 USA.
[Hancock, J. N.; Devereaux, T. P.; Greven, M.] Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA.
[Chabot-Couture, G.; Greven, M.] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA.
[Li, Y.] Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
[Petrakovskii, G. A.] Russian Acad Sci, Siberian Div, Kirenskii Inst Phy, Krasnoyarsk 660036, Russia.
[Ishii, K.; Jarrige, I.; Mizuki, J.] Japan Atom Energy Agcy, Synchrotron Radiat Res Ctr, Mikazuki, Hyogo 6795148, Japan.
RP Hancock, JN (reprint author), Dept Photon Sci, Stanford, CA 94309 USA.
RI Hancock, Jason/F-4694-2010
FU U.S. Department of Energy [DE-AC02-05CH11231]; Computational Materials
Science Network (CMSN); Division of Materials Science and Engineering;
Basic Energy Sciences; DOE [DE-AC02-76SF00515]; NSF [DMR-0705086]
FX We would like to acknowledge valuable conversations with J. P. Hill, S.
Johnston, Y.-J. Kim, B. Moritz, B. S. Shastry, and F. Vernay. The
synchrotron radiation experiments were performed under the Common Use
Facility Programme of JAEA. This research used resources of the National
Energy Research Scientific Computing Center, which is supported by the
Office of Science of the U.S. Department of Energy under Contract No.
DE-AC02-05CH11231, and has benefitted from the RIXS collaboration
supported by the Computational Materials Science Network (CMSN) program
of the Division of Materials Science and Engineering, Basic Energy
Sciences, U.S. Department of Energy under grant number
DE-FG02-08ER46540. This work was supported by the DOE under Contract No.
DE-AC02-76SF00515 and by the NSF under Grant No. DMR-0705086.
NR 21
TC 14
Z9 14
U1 1
U2 23
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 9
AR 092509
DI 10.1103/PhysRevB.80.092509
PG 4
WC Physics, Condensed Matter
SC Physics
GA 501LI
UT WOS:000270383000023
ER
PT J
AU Herrera, M
Ramasse, QM
Morgan, DG
Gonzalez, D
Pizarro, J
Yanez, A
Galindo, P
Garcia, R
Du, MH
Zhang, SB
Hopkinson, M
Browning, ND
AF Herrera, M.
Ramasse, Q. M.
Morgan, D. G.
Gonzalez, D.
Pizarro, J.
Yanez, A.
Galindo, P.
Garcia, R.
Du, M. -H.
Zhang, S. B.
Hopkinson, M.
Browning, N. D.
TI Atomic scale high-angle annular dark field STEM analysis of the N
configuration in dilute nitrides of GaAs
SO PHYSICAL REVIEW B
LA English
DT Article
ID TRANSMISSION ELECTRON-MICROSCOPY; MOLECULAR-BEAM EPITAXY; NITROGEN
INCORPORATION; ALLOYS; CONTRAST; SOLUBILITY; DEFECTS; GAINNAS; BAND;
SEMICONDUCTORS
AB While high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM) has been successfully used for the analysis of heavy atoms in a lighter matrix, the detection of light atoms in a heavy matrix remains challenging. In this paper, we show that the combination of first-principles total-energy calculations with aberration-corrected HAADF-STEM experimental and simulated images can be used to overcome this problem. The application of this methodology to the analysis of dilute nitrides of GaAs points to the existence of a major proportion of (2N(As))(nn) in the alloy, which is a relatively stable configuration in GaAsN as revealed by our energetic calculations. Our study has allowed us to shed light in the effect of the local distortion of the lattice due to different configuration of atoms in HAADF-STEM imaging.
C1 [Herrera, M.; Morgan, D. G.; Browning, N. D.] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA.
[Ramasse, Q. M.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Gonzalez, D.; Garcia, R.] Univ Cadiz, Dept Ciencia Mat, Cadiz 11510, Spain.
[Gonzalez, D.; Garcia, R.] Univ Cadiz, IM & QI, Cadiz 11510, Spain.
[Pizarro, J.; Yanez, A.; Galindo, P.] Univ Cadiz, Dept Lenguajes & Sistemas Informat, Cadiz 11510, Spain.
[Du, M. -H.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Zhang, S. B.] Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY 12180 USA.
[Hopkinson, M.] Univ Sheffield, Dept Elect & Elect Engn, Sheffield S1 3JD, S Yorkshire, England.
[Browning, N. D.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Herrera, M (reprint author), Univ Cadiz, Dept Ciencia Mat, Cadiz 11510, Spain.
RI Du, Mao-Hua/B-2108-2010; Hopkinson, Mark/H-8239-2012; Krausnick,
Jennifer/D-6291-2013; Zhang, Shengbai/D-4885-2013; Pizarro Junquera,
Joaquin/L-5943-2014; GALINDO, PEDRO/L-6183-2014; Gonzalez,
David/F-4253-2012;
OI Garcia Roja, Rafael/0000-0003-2867-7016; Browning,
Nigel/0000-0003-0491-251X; Du, Mao-Hua/0000-0001-8796-167X; Zhang,
Shengbai/0000-0003-0833-5860; Pizarro Junquera,
Joaquin/0000-0002-4295-6743; GALINDO, PEDRO/0000-0003-0892-8113;
Gonzalez, David/0000-0001-6879-444X; Herrera Collado,
Miriam/0000-0002-2325-5941; Hopkinson, Mark/0000-0002-8097-6913
FU European Union [MOIF-CF-2006-21423]; Spanish CICYT [MAT2007-60643]; DOE
[DE-FG02-03ER46057]; U. S. Department of Energy [DE-AC02-05CH11231];
Office of Nonproliferation Research and Development [NA22]
FX This work was supported in part by a grant from the European Union under
Contract No. MOIF-CF-2006-21423, Spanish CICYT Project No.
MAT2007-60643, DOE under Grant No. DE-FG02-03ER46057, U. S. Department
of Energy under Contract No. DE-AC02-05CH11231, and DOE Office of
Nonproliferation Research and Development NA22.
NR 57
TC 11
Z9 11
U1 0
U2 14
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 12
AR 125211
DI 10.1103/PhysRevB.80.125211
PG 11
WC Physics, Condensed Matter
SC Physics
GA 501LL
UT WOS:000270383300067
ER
PT J
AU Hillyard, PW
Kuchibhatla, SVNT
Glover, TE
Hertlein, MP
Huse, N
Nachimuthu, P
Saraf, LV
Thevuthasan, S
Gaffney, KJ
AF Hillyard, P. W.
Kuchibhatla, S. V. N. T.
Glover, T. E.
Hertlein, M. P.
Huse, N.
Nachimuthu, P.
Saraf, L. V.
Thevuthasan, S.
Gaffney, K. J.
TI Atomic resolution mapping of the excited-state electronic structure of
Cu2O with time-resolved x-ray absorption spectroscopy
SO PHYSICAL REVIEW B
LA English
DT Article
ID PHOTOVOLTAIC PROPERTIES; CUPROUS-OXIDE; MANY-BODY; SPECTRA; DYNAMICS;
CUO; COVALENCY; EMISSION; METALS; PROBE
AB We have used time-resolved soft x-ray spectroscopy to investigate the electronic structure of optically excited cuprous oxide at the O K edge and the Cu L-3 edge. The 400 nm optical excitation shifts the Cu and O absorptions to lower energy, but does not change the integrated x-ray absorption significantly for either edge. The constant integrated x-ray absorption cross-section indicates that the conduction-band and valence-band edges have very similar Cu 3d and O 2p orbital contributions. The 2.1 eV optical band gap of Cu2O significantly exceeds the one eV shift in the Cu L-3- and O K-edges absorption edges induced by optical excitation, demonstrating the importance of core-hole excitonic effects and valence electron screening in the x-ray absorption process.
C1 [Hillyard, P. W.; Gaffney, K. J.] Stanford Univ, Stanford Linear Accelerator Ctr, PULSE Inst Ultrafast Energy Sci, Stanford, CA 94305 USA.
[Hillyard, P. W.] Stanford Univ, Dept Chem, Stanford, CA 94305 USA.
[Kuchibhatla, S. V. N. T.; Nachimuthu, P.; Saraf, L. V.; Thevuthasan, S.] Pacific NW Natl Lab, EMSL, Richland, WA 99352 USA.
[Glover, T. E.; Hertlein, M. P.] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Huse, N.] Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA.
RP Gaffney, KJ (reprint author), Stanford Univ, Stanford Linear Accelerator Ctr, PULSE Inst Ultrafast Energy Sci, Stanford, CA 94305 USA.
EM kgaffney@slac.stanford.edu
RI Huse, Nils/A-5712-2017
OI Huse, Nils/0000-0002-3281-7600
FU U. S. Department of Energy; Department of Energy's Office of Biological
and Environmental; U. S. Department of Energy by Battelle Memorial
Institute [DE-AC06-76RLO 1830]
FX This research was supported by the Director, Office of Science, Office
of Basic Energy Sciences, Chemical Sciences, Geosciences, and
Biosciences Division, of the U. S. Department of Energy. A portion of
this research was performed using EMSL, a national scientific user
facility sponsored by the Department of Energy's Office of Biological
and Environmental Research located at Pacific Northwest National
Laboratory (PNNL). PNNL is operated for the U. S. Department of Energy
by Battelle Memorial Institute under Contract No. DE-AC06-76RLO 1830. P.
B. H. and S. K. acknowledge V. Shutthanandan for help with RBS
measurements on the Cu2O films and P. B. H. and K.J.G.
acknowledge the assistance of R. Schoenlein, P. Heimann, C. Weber, D.
Meyer, and D. Nordlund with the experiments.
NR 43
TC 3
Z9 3
U1 0
U2 15
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 12
AR 125210
DI 10.1103/PhysRevB.80.125210
PG 5
WC Physics, Condensed Matter
SC Physics
GA 501LL
UT WOS:000270383300066
ER
PT J
AU Hoang, K
Tomic, A
Mahanti, SD
Kyratsi, T
Chung, DY
Tessmer, SH
Kanatzidis, MG
AF Hoang, Khang
Tomic, Aleksandra
Mahanti, S. D.
Kyratsi, Theodora
Chung, Duck-Young
Tessmer, S. H.
Kanatzidis, Mercouri G.
TI Role of K/Bi disorder in the electronic structure of beta-K2Bi8Se13
SO PHYSICAL REVIEW B
LA English
DT Article
ID TOTAL-ENERGY CALCULATIONS; AUGMENTED-WAVE METHOD;
THERMOELECTRIC-MATERIALS; POTENTIAL MODEL; BASIS-SET; K2BI8-XSBXSE13;
APPROXIMATION; ALLOYS; METALS
AB We have carried out tunneling spectroscopy and first-principles studies for beta-K2Bi8Se13, a promising thermoelectric material with partially disordered mixed K/Bi sites. The tunneling data, obtained with a scanning tunneling microscope (STM), show that the system is a semiconductor with a band gap of similar to 0.4 eV and band-tail states near the valence-band top and the conduction-band bottom. First-principles calculations, on the other hand, show that beta-K2Bi8Se13 can be semimetallic or semiconducting depending on the arrangements of the K and Bi atoms in the mixed sites. The electronic structure of beta-K2Bi8Se13 near the band-gap region is largely determined by unbonded Se p states and states associated with strained bonds which are present due to K/Bi disorder and by the Bi p-Se p hybridization which tends to drive the system toward metallicity. Among the different K/Bi arrangements investigated, we have identified a structural model (quasidisordered structure) that is able to satisfactorily reproduce the atomic and electronic structures of beta-K2Bi8Se13; i.e., the local composition in the mixed channels as observed experimentally and the band gap and tails as seen in the STM measurements. We argue that transport properties of beta-K2Bi8Se13 can be qualitatively understood in terms of the electronic structure obtained in calculations using the above structural model.
C1 [Tomic, Aleksandra; Mahanti, S. D.; Tessmer, S. H.] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA.
[Hoang, Khang] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA.
[Kyratsi, Theodora] Univ Cyprus, Dept Mech & Mfg Engn, CY-1678 Nicosia, Cyprus.
[Chung, Duck-Young; Kanatzidis, Mercouri G.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Kanatzidis, Mercouri G.] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA.
RP Mahanti, SD (reprint author), Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA.
EM mahanti@pa.msu.edu
RI Hoang, Khang/C-2879-2008;
OI Hoang, Khang/0000-0003-1889-0745; KYRATSI, THEODORA/0000-0003-2916-1708
FU Office of Naval Research; NSF [0305461]
FX This work was supported in part by the Office of Naval Research and NSF
Grant No. 0305461, and made use of the computing facilities of Michigan
State University High Performance Computing Center.
NR 23
TC 5
Z9 5
U1 1
U2 14
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 12
AR 125112
DI 10.1103/PhysRevB.80.125112
PG 8
WC Physics, Condensed Matter
SC Physics
GA 501LL
UT WOS:000270383300033
ER
PT J
AU Huda, MN
Yan, YF
Wei, SH
Al-Jassim, MM
AF Huda, Muhammad N.
Yan, Yanfa
Wei, Su-Huai
Al-Jassim, Mowafak M.
TI Exchange-induced negative-U charge order in N-doped WO3: A
spin-Peierls-like system
SO PHYSICAL REVIEW B
LA English
DT Article
ID ELECTRON-PHONON SYSTEMS; PHASE-DIAGRAM; ENERGY; TRANSITION; METALS;
MODEL
AB An unconventional spin-Peierls-type distortion was found in a nonmagnetic atom N doped pseudo-one-dimensional WO3 system. The periodicity of the initial ferromagnetic WO3 : N is doubled in one direction, and the band gap opens up due to this distortion. The magnetic moment at the N site is asymmetric in the distorted system, and the interaction between the localized spin is very weak. We show that the large exchange interaction of the nitrogen 2p atomic orbital and the pseudo-one-dimensional W-O-W chain in monoclinic WO3 structure is the origin of this spin-Peierls-like transition that leads to the stabilization of an unusual negative-U charge-ordered system.
C1 [Huda, Muhammad N.; Yan, Yanfa; Wei, Su-Huai; Al-Jassim, Mowafak M.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Huda, MN (reprint author), Univ Texas Arlington, Dept Phys, POB 19059, Arlington, TX 76019 USA.
EM huda@uta.edu
RI Huda, Muhammad/C-1193-2008
OI Huda, Muhammad/0000-0002-2655-498X
FU U.S. Department of Energy [DE-AC36-08GO28308]; National Energy Research
Scientific Computing Center
FX This work was supported by the U.S. Department of Energy under Contract
No. DE-AC36-08GO28308. This research used resources of the National
Energy Research Scientific Computing Center, which is supported by the
Office of Science of the U.S. Department of Energy under Contract No.
DE-AC36-08GO28308.
NR 27
TC 10
Z9 10
U1 0
U2 12
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 11
AR 115118
DI 10.1103/PhysRevB.80.115118
PG 5
WC Physics, Condensed Matter
SC Physics
GA 501LK
UT WOS:000270383200046
ER
PT J
AU Jaworski, CM
Tobola, J
Levin, EM
Schmidt-Rohr, K
Heremans, JP
AF Jaworski, Christopher M.
Tobola, Janusz
Levin, E. M.
Schmidt-Rohr, Klaus
Heremans, Joseph P.
TI Antimony as an amphoteric dopant in lead telluride
SO PHYSICAL REVIEW B
LA English
DT Article
ID DENSITY-OF-STATES; ELECTRONIC-STRUCTURE; PBTE; CHALCOGENIDES; ALLOYS;
PBSE
AB We elucidate the amphoteric nature of antimony as a dopant in PbTe. Band-structure calculations show that Sb substituting for Pb is a donor and that Sb on the Te site is an acceptor giving rise to a large excess density of states (DOS). Experimentally, in Te-rich Pb(1-x)Sb(x)Te samples, (125)Te NMR spectroscopy shows that Sb substitutes for Pb and transport data reveal that it then acts as a simple donor. In Pb-rich PbSb(x)Te(1-x) samples, (125)Te NMR shows that little Sb substitutes for Te when samples are prepared above 770 K and then quenched; (207)Pb NMR shows four types of charge carriers, but only a majority hole and a minority electron contribute to transport. Sb acts as an acceptor in PbSb(x)Te(1-x), but the large DOS calculated must correspond to a large concentration of localized holes and the Seebeck coefficient is not enhanced.
C1 [Jaworski, Christopher M.; Heremans, Joseph P.] Ohio State Univ, Dept Mech Engn, Columbus, OH 43210 USA.
[Tobola, Janusz] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, PL-30059 Krakow, Poland.
[Levin, E. M.; Schmidt-Rohr, Klaus] US DOE, Ames Lab, Ames, IA 50011 USA.
[Levin, E. M.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Schmidt-Rohr, Klaus] Iowa State Univ, Dept Chem, Ames, IA 50011 USA.
[Heremans, Joseph P.] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA.
RP Jaworski, CM (reprint author), Ohio State Univ, Dept Mech Engn, Columbus, OH 43210 USA.
RI Heremans, Joseph/D-3298-2015
OI Heremans, Joseph/0000-0003-3996-2744
FU Polish Ministry of Science and Higher Education [N202-2104-33]; U. S.
Department of Energy-Basic Energy Sciences [DE-AC02-07CH11358]
FX Work by C. M. J. and J. P. H. was supported by BSST, LLC, and partially
by the Ohio Department of Development WCI grant on Photovoltaic
Innovation and Commercialization. J. T. acknowledges the partial support
of the Polish Ministry of Science and Higher Education under the grant
No. N202-2104-33. Work by E. M. L. and K. S. R. was supported by the U.
S. Department of Energy-Basic Energy Sciences under Contract No.
DE-AC02-07CH11358.
NR 25
TC 33
Z9 33
U1 5
U2 24
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 12
AR 125208
DI 10.1103/PhysRevB.80.125208
PG 10
WC Physics, Condensed Matter
SC Physics
GA 501LL
UT WOS:000270383300064
ER
PT J
AU Jeffries, JR
Blobaum, KJM
Wall, MA
Schwartz, AJ
AF Jeffries, J. R.
Blobaum, K. J. M.
Wall, M. A.
Schwartz, A. J.
TI Evidence for nascent equilibrium nuclei as progenitors of anomalous
transformation kinetics in a Pu-Ga alloy
SO PHYSICAL REVIEW B
LA English
DT Article
DE gallium alloys; martensitic transformations; nucleation; plutonium
alloys; solid-state phase transformations
ID PHASE-TRANSFORMATIONS; DELTA-PLUTONIUM; MARTENSITIC-TRANSFORMATION;
ELECTRONIC-STRUCTURE; NUCLEATION; SYSTEM
AB By alloying Pu with Ga, the face-centered-cubic delta phase can be retained down to room temperature in a metstable configuration, which ultimately yields to chemical driving forces by undergoing the delta ->alpha(') isothermal martensitic transformation below M-s approximate to-100 degrees C. This transformation is found to exhibit anomalous transformation kinetics, the nature of which has remained elusive for over 30 years. Recently, a "conditioning" treatment-an isothermal hold above M-s-has been shown to dramatically affect the amount of alpha(') phase formed during the transformation. Herein, we report evidence that the conditioning treatment induces the lower C of the double-C curve and we furthermore implicate the classical nucleation of equilibrium phases as the underlying mechanism of the conditioning effect in Pu-Ga alloys. This mechanism should not be rigorously exclusive to plutonium alloys as it arises from the proximity of energies between the retained metastable phase and the low-energy equilibrium phases.
C1 [Jeffries, J. R.; Blobaum, K. J. M.; Wall, M. A.; Schwartz, A. J.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Jeffries, JR (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
FU Lawrence Livermore National Laboratory; Lawrence Livermore National
Security, LLC; U.S. Department of Energy; National Nuclear Security
Administration [DE-AC52-07NA27344]
FX Lawrence Livermore National Laboratory is operated by Lawrence Livermore
National Security, LLC, for the U.S. Department of Energy, National
Nuclear Security Administration under Contract No. DE-AC52-07NA27344.
This work was performed under LDRD.
NR 38
TC 7
Z9 7
U1 3
U2 8
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 9
AR 094107
DI 10.1103/PhysRevB.80.094107
PG 7
WC Physics, Condensed Matter
SC Physics
GA 501LI
UT WOS:000270383000030
ER
PT J
AU Jia, S
Ni, N
Bud'ko, SL
Canfield, PC
AF Jia, Shuang
Ni, Ni
Bud'ko, S. L.
Canfield, P. C.
TI Magnetic properties of RFe2Zn20 and RCo2Zn20 (R=Y, Nd, Sm, Gd-Lu)
SO PHYSICAL REVIEW B
LA English
DT Article
ID ITINERANT-ELECTRON METAMAGNETISM; RARE-EARTH; TRANSPORT-PROPERTIES; SPIN
FLUCTUATIONS; CRITICAL-POINTS; SUSCEPTIBILITY; TEMPERATURE; CO;
INTERMETALLICS; TIBE2
AB Magnetization, resistivity, and specific heat measurements were performed on solution-grown single crystals of RFe2Zn20 and RCo2Zn20 (R=Y, Nd, Sm, Gd-Lu). Whereas LuCo2Zn20 and YCo2Zn20 manifest unremarkable metallic behavior, LuFe2Zn20 and YFe2Zn20 display behaviors such as characteristic of nearly ferromagnetic Fermi liquids. When the well-defined 4f local moments (Gd3+-Tm3+) are embedded into this strongly polarizable host, they manifest enhanced ferromagnetic ordering and the values of T-C for RFe2Zn20 (R =Gd-Tm) scale with the de Gennes factor. In addition, data on the RFe2Zn20 compounds indicate a small crystal electric field (CEF) effect compared with the interaction energy scale. On the other hand, the local moment bearing members of RCo2Zn20 (R=Nd, Sm, Gd-Tm) manifest weak magnetic interactions and the magnetic properties for R=Dy-Tm members are strongly influenced by the CEF effect on the R ions. The magnetic anisotropy and specific heat data for the Co series were used to determine the CEF coefficient of R ion with its cubic point symmetry. These CEF coefficients, determined for the Co series, are consistent with the magnetic anisotropy and specific heat data for the Fe series, which indicates similar CEF effects for the Fe and Co series. Such analysis, combined with specific heat and resistivity data, indicates that for R=Tb-Ho, the CEF splitting scale is smaller than their TC values, whereas for ErFe2Zn20 and TmFe2Zn20 the 4f electrons lose part of their full IIund's rule ground state degeneracy above T-C. YbFe2Zn20 and YbCo2Zn20 manifest typical but distinct heavy fermion behaviors associated with different Kondo temperatures.
C1 Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
RP Jia, S (reprint author), Princeton Univ, Dept Chem, Princeton, NJ 08544 USA.
RI Canfield, Paul/H-2698-2014
FU U. S. Department of Energy by Iowa State University [DE-AC02-07CII11358]
FX The authors thank J. Frederich for growing some of the compounds, L. Tan
for Laue x-ray measurements, and E. D. Mun, Y. Janssen, and R. Prozorov
for helpful discussions. Ames Laboratory is operated for the U. S.
Department of Energy by Iowa State University under Contract No.
DE-AC02-07CII11358. This work was supported by the Director for Energy
Research, Office of Basic Energy Sciences.
NR 47
TC 36
Z9 36
U1 3
U2 32
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 10
AR 104403
DI 10.1103/PhysRevB.80.104403
PG 17
WC Physics, Condensed Matter
SC Physics
GA 501LJ
UT WOS:000270383100046
ER
PT J
AU Jiang, DE
Whetten, RL
AF Jiang, De-en
Whetten, Robert L.
TI Magnetic doping of a thiolated-gold superatom: First-principles density
functional theory calculations
SO PHYSICAL REVIEW B
LA English
DT Article
ID TOTAL-ENERGY CALCULATIONS; AUGMENTED-WAVE METHOD; PROTECTED AU-25;
PHOTOELECTRON-SPECTROSCOPY; ELECTRONIC-STRUCTURE; MASS-SPECTROMETRY;
CRYSTAL-STRUCTURE; CLUSTER ANIONS; BASIS-SET; NANOPARTICLES
AB The Au(25)(SR)(18)(-) cluster is a new member in the superatom family which features a centered icosahedral shell (Au(13)) protected by six RS(AuSR)(2) motifs (RS(-) being an alkylthiolate group). Here we show that this superatom can be magnetically doped by replacing the center Au atom with Cr, Mn, or Fe. We find that Cr- and Mn-doped clusters have an optimized magnetic moment of 5 Bohr magnetons while the Fe-doped cluster has an optimized magnetic moment of 3 Bohr magnetons. Although the dopant atom's local magnetic moment makes a major contribution to the total moment, the icosahedral Au(12) shell is also found to be significantly magnetized. Our work here provides a scenario of magnetic doping of a metal-cluster superatom which is protected by ligands and made by wet chemistry.
C1 [Jiang, De-en] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
[Whetten, Robert L.] Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA.
RP Jiang, DE (reprint author), Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
EM jiangd@ornl.gov
RI Jiang, De-en/D-9529-2011
OI Jiang, De-en/0000-0001-5167-0731
FU Office of Basic Energy Sciences, U.S. Department of Energy
[DE-AC05-00OR22725, DE-AC02-05CH11231]
FX This work was supported by the Office of Basic Energy Sciences, U.S.
Department of Energy under Contract No. DE-AC05-00OR22725 with
UT-Battelle, LLC. D.E.J. thanks Gangli Wang for very useful discussion.
This research used resources of the National Energy Research Scientific
Computing Center, which is supported by the Office of Science of the U.
S. Department of Energy under Contract No. DE-AC02-05CH11231.
NR 40
TC 49
Z9 49
U1 2
U2 27
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 11
AR 115402
DI 10.1103/PhysRevB.80.115402
PG 5
WC Physics, Condensed Matter
SC Physics
GA 501LK
UT WOS:000270383200114
ER
PT J
AU Kan, EJ
Xiang, HJ
Zhang, Y
Lee, C
Whangbo, MH
AF Kan, E. J.
Xiang, H. J.
Zhang, Y.
Lee, C.
Whangbo, M. -H.
TI Density-functional analysis of spin exchange and ferroelectric
polarization in AgCrO2
SO PHYSICAL REVIEW B
LA English
DT Article
ID TOTAL-ENERGY CALCULATIONS; AUGMENTED-WAVE METHOD; BASIS-SET;
MULTIFERROICS
AB Density-functional calculations were carried out for AgCrO2 to examine its spin exchange and ferroelectric polarization. In the multiferroic state of AgCrO2 the triangular spin lattice of each CrO2 layer forms parallel chains with helical-spin order. The spin exchange interactions of AgCrO2 are strongly frustrated both within and between adjacent CuO2 layers, which gives rise to the observed helical-spin order. The observed ferroelectric polarization of AgCrO2 is not caused by individual helical-spin chains, but by the spiral-spin chain structures that propagate between the helical-spin chains.
C1 [Kan, E. J.; Zhang, Y.; Lee, C.; Whangbo, M. -H.] N Carolina State Univ, Dept Chem, Raleigh, NC 27695 USA.
[Xiang, H. J.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Kan, EJ (reprint author), N Carolina State Univ, Dept Chem, Box 8204, Raleigh, NC 27695 USA.
RI Kan, Erjun/A-4322-2009; Zhang, Yuemei/H-7370-2012; Xiang,
Hongjun/I-4305-2016
OI Kan, Erjun/0000-0003-0433-4190; Xiang, Hongjun/0000-0002-9396-3214
FU Office of Basic Energy Sciences; Division of Materials Sciences; U.S.
Department of Energy [DE-FG02-86ER45259]
FX The research was supported by the Office of Basic Energy Sciences,
Division of Materials Sciences, U.S. Department of Energy, under Grant
No. DE-FG02-86ER45259 and also by computing resources at the NERSC and
the HPC Centers.
NR 30
TC 15
Z9 15
U1 1
U2 23
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 10
AR 104417
DI 10.1103/PhysRevB.80.104417
PG 5
WC Physics, Condensed Matter
SC Physics
GA 501LJ
UT WOS:000270383100060
ER
PT J
AU Khodas, M
Zaliznyak, IA
Kharzeev, DE
AF Khodas, M.
Zaliznyak, I. A.
Kharzeev, D. E.
TI Spin-polarized transport through a domain wall in magnetized graphene
SO PHYSICAL REVIEW B
LA English
DT Article
ID ROOM-TEMPERATURE; HETEROEPITAXIAL GRAPHITE; BERRYS PHASE; THIN-FILM;
SUPERLATTICES; SCATTERING; SURFACES; SINGLE; ORDER; FIELD
AB Atomically thin two-dimensional layer of honeycomb crystalline carbon known as graphene is a promising system for electronics. At charge neutrality it has a pointlike Fermi surface, which is very sensitive to external potentials and can be easily doped with either electrons or holes. Zeeman magnetic field parallel to the graphene layer splits electron bands according to spin polarization and creates geometrically congruent circular Fermi surfaces of particle and hole type for spins down and up, respectively. Hence, a fully spin-polarized transport in both electron and hole channels could be realized, presenting an opportunity for developing graphene-based spintronic devices. In particular, if spin polarization is achieved by virtue of the proximity effect in graphene in contact with magnetic layer, a domain wall (DW) separating regions with opposite spin polarizations could act either as a spin flipper allowing controllable rotation of spin polarization of electric currents or as a spin filter (spin rectifier). Here we consider ballistic passage of spin-polarized charge carriers in magnetized graphene through such a DW and analyze different regimes of spin-dependent refraction and reflection as a function of chemical potential and the thickness of the DW.
C1 [Khodas, M.; Kharzeev, D. E.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
[Khodas, M.; Zaliznyak, I. A.] Brookhaven Natl Lab, Dept Condensed Matter Phys & Mat Sci, Upton, NY 11973 USA.
RP Khodas, M (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
EM mkhodas@bnl.gov
RI Zaliznyak, Igor/E-8532-2014
OI Zaliznyak, Igor/0000-0002-9886-3255
FU U.S. Department of Energy [DE-AC02-98CH10886]; BNL LDRD [08-002]
FX Illuminating discussions with A. Tsvelik, T. Valla, Y. Bazaliy, and I.
Klich are greatly appreciated. This work was supported under the
Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy. M. K.
acknowledges support from the BNL LDRD under Grant No. 08-002.
NR 62
TC 8
Z9 8
U1 11
U2 68
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 12
AR 125428
DI 10.1103/PhysRevB.80.125428
PG 11
WC Physics, Condensed Matter
SC Physics
GA 501LL
UT WOS:000270383300129
ER
PT J
AU Kondo, T
Khasanov, R
Sassa, Y
Bendounan, A
Pailhes, S
Chang, J
Mesot, J
Keller, H
Zhigadlo, ND
Shi, M
Bukowski, Z
Karpinski, J
Kaminski, A
AF Kondo, Takeshi
Khasanov, R.
Sassa, Y.
Bendounan, A.
Pailhes, S.
Chang, J.
Mesot, J.
Keller, H.
Zhigadlo, N. D.
Shi, M.
Bukowski, Z.
Karpinski, J.
Kaminski, A.
TI Anomalous asymmetry in the Fermi surface of the high-temperature
superconductor YBa2Cu4O8 revealed by angle-resolved photoemission
spectroscopy
SO PHYSICAL REVIEW B
LA English
DT Article
ID CUPRATE SUPERCONDUCTORS; SPIN; YBA2CU3O7-DELTA; SYMMETRY; FLUCTUATIONS;
YBA2CU3O6.6; ANISOTROPY; SPECTRA; POINT; PHASE
AB We use microprobe angle-resolved photoemission spectroscopy to study the Fermi surface and band dispersion of the CuO2 planes in the high-temperature superconductor, YBa2Cu4O8. We find a strong in-plane asymmetry of the electronic structure between directions along a and b axes. The saddle point of the antibonding band lies at a significantly higher energy in the a direction (pi, 0) than the b direction (0, pi), whereas the bonding band displays the opposite behavior. We demonstrate that the abnormal band shape is due to a strong asymmetry of the bilayer band splitting, likely caused by a nontrivial hybridization between the planes and chains. This asymmetry has an important implication for interpreting key properties of the Y-Ba-Cu-O family, especially the superconducting gap, transport, and results of inelastic neutron scattering.
C1 [Kondo, Takeshi; Kaminski, A.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
[Kondo, Takeshi; Kaminski, A.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Khasanov, R.] Paul Scherrer Inst, Lab Muon Spin Spect, CH-5232 Villigen, Switzerland.
[Sassa, Y.; Chang, J.; Mesot, J.] Swiss Fed Inst Technol, Neutron Scattering Lab, CH-5232 Villigen, Switzerland.
[Bendounan, A.; Shi, M.] Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland.
[Pailhes, S.] CEA Saclay, CNRS, CEA, Lab Leon Brillouin, F-91191 Gif Sur Yvette, France.
[Keller, H.] Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland.
[Zhigadlo, N. D.; Bukowski, Z.; Karpinski, J.] ETH, Solid State Phys Lab, CH-8093 Zurich, Switzerland.
RP Kondo, T (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
RI Chang, Johan/F-1506-2014; Kondo, Takeshi/H-2680-2016; Sassa,
Yasmine/F-3362-2017;
OI Chang, Johan/0000-0002-4655-1516; Khasanov, Rustem/0000-0002-4768-5524
FU Director Office for Basic Energy Sciences, (U.S.) DOE; Swiss NCCR MaNEP;
Department of Energy-Basic Energy Sciences [DE-AC02-07CH11358]; Swiss
National Science Foundation; K. Alex Muler Foundation
FX We thank O. K. Andersen and Jorg Schmalian for useful remarks. This work
was supported by Director Office for Basic Energy Sciences, (U.S.) DOE
and Swiss NCCR MaNEP. Work at the Ames Laboratory was supported by the
Department of Energy-Basic Energy Sciences under Contract No.
DE-AC02-07CH11358. R. K. gratefully acknowledges support of Swiss
National Science Foundation and K. Alex Muler Foundation.
NR 32
TC 8
Z9 8
U1 2
U2 6
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 10
AR 100505
DI 10.1103/PhysRevB.80.100505
PG 4
WC Physics, Condensed Matter
SC Physics
GA 501LJ
UT WOS:000270383100015
ER
PT J
AU Lee, H
Ihm, J
Cohen, ML
Louie, SG
AF Lee, Hoonkyung
Ihm, Jisoon
Cohen, Marvin L.
Louie, Steven G.
TI Calcium-decorated carbon nanotubes for high-capacity hydrogen storage:
First-principles calculations
SO PHYSICAL REVIEW B
LA English
DT Article
ID MEDIA; TI; COORDINATION; DIHYDROGEN; ADSORPTION; ENERGY
AB Using first-principles calculations, we perform a search for high-capacity hydrogen storage media based on individually dispersed calcium atoms on doped or defective carbon nanotubes. We find that up to six H-2 molecules can bind to a Ca atom each with a desirable binding energy of similar to 0.2 eV/H-2. The hybridization of the empty Ca 3d orbitals with the H-2 sigma orbitals contributes to the H-2 binding, and Ca clustering is suppressed by preferential binding of Ca atoms to doped boron and defect sites dispersed on carbon nanotubes. We also show that individual Ca-decorated B-doped CNTs with a concentration of similar to 6 at. % B doping can reach the gravimetric capacity of similar to 5 wt. % hydrogen.
C1 [Lee, Hoonkyung; Cohen, Marvin L.; Louie, Steven G.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Lee, Hoonkyung; Cohen, Marvin L.; Louie, Steven G.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Sci Mat, Berkeley, CA 94720 USA.
[Ihm, Jisoon] Seoul Natl Univ, Dept Phys & Astron, Seoul 151747, South Korea.
RP Louie, SG (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM sglouie@berkeley.edu
RI Lee, Hoonkyung/C-9869-2010
FU National Science Foundation [DMR07-05941]; Director, Office of Science,
Office of Basic Energy Sciences, Materials Sciences and Engineering
Division, U.S. Department of Energy [DE-AC02-05CH11231]; Korean
Government MOST/KOSEF; Korean Government MOEHRD [KRF-2006-341-C000015]
FX This research was supported by the National Science Foundation under
Grant No. DMR07-05941 and by the Director, Office of Science, Office of
Basic Energy Sciences, Materials Sciences and Engineering Division, U.
S. Department of Energy under Contract No. DE-AC02-05CH11231.
Computational resources were provided by NPACI and NERSC. J.I. was
supported by the Center for Nanotubes and Nanostructured Composites
funded by the Korean Government MOST/KOSEF, and the Korean Government
MOEHRD, Basic Research Fund No. KRF-2006-341-C000015.
NR 33
TC 95
Z9 95
U1 5
U2 23
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 11
AR 115412
DI 10.1103/PhysRevB.80.115412
PG 5
WC Physics, Condensed Matter
SC Physics
GA 501LK
UT WOS:000270383200124
ER
PT J
AU Levin, EM
Cook, BA
Ahn, K
Kanatzidis, MG
Schmidt-Rohr, K
AF Levin, E. M.
Cook, B. A.
Ahn, K.
Kanatzidis, M. G.
Schmidt-Rohr, K.
TI Electronic inhomogeneity and Ag:Sb imbalance of Ag1-yPb18Sb1+zTe20
high-performance thermoelectrics elucidated by Te-125 and Pb-207 NMR
SO PHYSICAL REVIEW B
LA English
DT Article
ID HIGH FIGURE; PBTE; AGPBMSBTE2+M; TEMPERATURE; PB1-XSNXTE; ARTIFACTS;
MERIT; HEAT
AB Using magic-angle spinning Te-125 and Pb-207 NMR, we have discovered the presence of two phases of approximately tenfold different free-electron concentration, n, in high-performance thermoelectrics Ag1-yPb18Sb1+zTe20 ("LAST-18"), proven by pairs of Knight-shifted NMR peaks and biexponential spin-lattice relaxation. The ratio of the phases is typically 2:1 with n approximate to 2 x 10(19) cm(-3) and 0.2 x 10(19) cm(-3), respectively, determined from the spin-lattice relaxation times. Te-125 NMR spectra show that both phases contain similar concentrations of Sb. The low-n component is assigned to Ag-rich regions with Ag-Sb pairing (but not AgSbTe2), the dominant high-n component to PbTe:Sb resulting from the excess of Sb relative to Ag. The electronic inhomogeneity observed here must be considered in the search for a better understanding of high-performance thermoelectric materials.
C1 [Levin, E. M.; Cook, B. A.; Schmidt-Rohr, K.] US DOE, Ames Lab, Ames, IA 50011 USA.
[Levin, E. M.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Ahn, K.; Kanatzidis, M. G.] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA.
[Schmidt-Rohr, K.] Iowa State Univ, Dept Chem, Ames, IA 50011 USA.
RP Levin, EM (reprint author), US DOE, Ames Lab, Ames, IA 50011 USA.
EM levin@iastate.edu; srohr@iastate.edu
FU U. S. Department of Energy-Basic Energy Sciences [DE-AC02-07CH11358];
Office of Naval Research
FX This work was supported by the U. S. Department of Energy-Basic Energy
Sciences under Contract No. DE-AC02-07CH11358. Partial support by the
Office of Naval Research is also acknowledged.
NR 27
TC 32
Z9 32
U1 2
U2 19
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 11
AR 115211
DI 10.1103/PhysRevB.80.115211
PG 6
WC Physics, Condensed Matter
SC Physics
GA 501LK
UT WOS:000270383200069
ER
PT J
AU Lin, PV
Camino, FE
Goldman, VJ
AF Lin, Ping V.
Camino, F. E.
Goldman, V. J.
TI Electron interferometry in the quantum Hall regime: Aharonov-Bohm effect
of interacting electrons
SO PHYSICAL REVIEW B
LA English
DT Article
ID ELECTROMAGNETIC POTENTIALS; ANTIDOT
AB An apparent h/fe Aharonov-Bohm flux period, where f is an integer, has been reported in coherent quantum Hall devices. Such subperiod is not expected for noninteracting electrons and thus is thought to result from interelectron Coulomb interaction. Here we report experiments in a Fabry-Perot interferometer comprised of two wide constrictions enclosing an electron island. By carefully tuning the constriction front gates, we find a regime where interference oscillations with period h/2e persist throughout the transition between the integer quantum Hall plateaus 2 and 3, including half-filling. In a large quantum Hall sample, a transition between integer plateaus occurs near half-filling, where the bulk of the sample becomes delocalized and thus dissipative bulk current flows between the counterpropagating edges ("backscattering"). In a quantum Hall constriction, where conductance is due to electron tunneling, a transition between forward and backscattering is expected near the half-filling. In our experiment, neither period nor amplitude of the oscillations show a discontinuity at half-filling, indicating that only one interference path exists throughout the transition. We also present experiments and an analysis of the front-gate dependence of the phase of the oscillations. The results point to a single physical mechanism of the observed conductance oscillations: Aharonov-Bohm interference of interacting electrons in quantum Hall regime.
C1 [Lin, Ping V.; Goldman, V. J.] SUNY Stony Brook, Dept Phys, Stony Brook, NY 11794 USA.
[Camino, F. E.] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
RP Lin, PV (reprint author), SUNY Stony Brook, Dept Phys, Stony Brook, NY 11794 USA.
RI Lin, Ping/A-5624-2017
OI Lin, Ping/0000-0002-3310-6384
FU National Science Foundation [DMR-0555238]
FX We acknowledge discussions with D. Averin, B. Halperin, and B. Rosenow,
and Wei Zhou for help in experiments. This work was supported in part by
the National Science Foundation under Grant No. DMR-0555238.
NR 31
TC 11
Z9 11
U1 4
U2 10
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 12
AR 125310
DI 10.1103/PhysRevB.80.125310
PG 6
WC Physics, Condensed Matter
SC Physics
GA 501LL
UT WOS:000270383300077
ER
PT J
AU Martin, C
Engelhardt, L
Baker, ML
Timco, GA
Tuna, F
Winpenny, REP
Tregenna-Piggott, PLW
Luban, M
Prozorov, R
AF Martin, Catalin
Engelhardt, Larry
Baker, Michael L.
Timco, Grigore A.
Tuna, Floriana
Winpenny, Richard E. P.
Tregenna-Piggott, Philip L. W.
Luban, Marshall
Prozorov, Ruslan
TI Radio-frequency spectroscopy of the low-energy spectrum of the magnetic
molecule Cr12Cu2
SO PHYSICAL REVIEW B
LA English
DT Article
AB We present tunnel diode oscillator (TDO) measurements of dynamic magnetic susceptibility, inelastic neutron-scattering (INS) measurements, and theoretical predictions based on quantum Monte Carlo (QMC) calculations for a magnetic molecule system, Cr12Cu2. The TDO measurements show not only ground-state level crossings (as can also be observed in low-temperature dc magnetization measurements) but also clear evidence of crossings between certain excited energy levels. These TDO results are in excellent agreement with our theoretical predictions for a Heisenberg Hamiltonian and are further confirmed by our INS measurements. Our present findings demonstrate that the TDO technique is a valuable magnetic spectroscopic tool for studying magnetic molecules, and that the QMC method is a valuable tool for predicting properties of computationally demanding systems such as Cr12Cu2.
C1 [Martin, Catalin; Luban, Marshall; Prozorov, Ruslan] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Martin, Catalin; Luban, Marshall; Prozorov, Ruslan] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
[Engelhardt, Larry] Francis Marion Univ, Dept Phys & Astron, Florence, SC 29501 USA.
[Baker, Michael L.; Timco, Grigore A.; Tuna, Floriana; Winpenny, Richard E. P.] Univ Manchester, Sch Chem, Manchester M13 9PL, Lancs, England.
[Baker, Michael L.] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France.
[Tregenna-Piggott, Philip L. W.] Univ Bern, Dept Chem & Biochem, CH-3000 Bern 9, Switzerland.
RP Prozorov, R (reprint author), Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
EM prozorov@ameslab.gov
RI Prozorov, Ruslan/A-2487-2008; Baker, Michael/D-1196-2015
OI Prozorov, Ruslan/0000-0002-8088-6096;
FU EPSRC-GB; EC; MAGMANet; Department of Energy, Basic Energy Sciences
[DE-AC02-07CH11358]; Leverhulme Trust; Royal Society; FMU Professional
Development Committee; Alfred P. Sloan Foundation
FX This work was supported by the EPSRC-GB (U.K.) and the EC-funded Network
of Excellence, MAGMANet. Work at the Ames Laboratory was supported by
the Department of Energy, Basic Energy Sciences, under Contract No.
DE-AC02-07CH11358. The collaboration between the Ames Laboratory and
Manchester was supported by The Leverhulme Trust. R. E. P. W.
acknowledges support from The Royal Society. L. E. acknowledges support
from the FMU Professional Development Committee. R. P. acknowledges
support from the Alfred P. Sloan Foundation. The INS work herein was
based on experiments performed at the Swiss spallation neutron source
SINQ, Paul Scherrer Institute, Villigen, Switzerland.
NR 22
TC 7
Z9 7
U1 1
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 10
AR 100407
DI 10.1103/PhysRevB.80.100407
PG 4
WC Physics, Condensed Matter
SC Physics
GA 501LJ
UT WOS:000270383100009
ER
PT J
AU Matsuo, A
Kindo, K
Nojiri, H
Engelhardt, L
Luban, M
Brechin, EK
Gass, IA
AF Matsuo, Akira
Kindo, Koichi
Nojiri, Hiroyuki
Engelhardt, Larry
Luban, Marshall
Brechin, Euan K.
Gass, Ian A.
TI High-field ground-state level crossing and magnetic susceptibility of an
{Fe-8}-cubane cluster
SO PHYSICAL REVIEW B
LA English
DT Article
DE energy level crossing; ferromagnetic materials; ground states;
Heisenberg model; iron compounds; magnetic susceptibility;
nanostructured materials; organic compounds
AB The differential susceptibility, dM/dH, of an {Fe-8}-cubane cluster has been measured for magnetic fields up to 54 T at 1.3 and 4.2 K using a pulsed-field technique. The data feature a single strong peak at 42 +/- 1 T, corresponding to a ground state level crossing at that field, in excellent agreement with the predicted value, 41 +/- 1 T, obtained using a Heisenberg model of the cluster. The theoretical model also accurately accounts for detailed features of the temperature and field dependence of the width and height of the observed peak.
C1 [Matsuo, Akira; Kindo, Koichi] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan.
[Nojiri, Hiroyuki] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan.
[Engelhardt, Larry] Francis Marion Univ, Dept Phys & Astron, Florence, SC 29501 USA.
[Luban, Marshall] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
[Luban, Marshall] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Brechin, Euan K.; Gass, Ian A.] Univ Edinburgh, Sch Chem, Edinburgh EH9 3JJ, Midlothian, Scotland.
RP Matsuo, A (reprint author), Univ Tokyo, Inst Solid State Phys, 1-5-1 Kashiwa, Kashiwa, Chiba 2778581, Japan.
RI Nojiri, Hiroyuki/B-3688-2011; Brechin, Euan/M-5130-2014
OI Brechin, Euan/0000-0002-9365-370X
FU MEXT, Japan [451]; Basic Energy Sciences, Department of Energy
[DE-AC02-07CH11358]
FX N. acknowledges support by a Grant-in-Aid on Priority Areas "High Field
Spin Science in 100T" (Grant No. 451) from MEXT, Japan. L. E. would like
to thank the FMU Professional Development Committee. Work at the Ames
Laboratory was supported by the Basic Energy Sciences, Department of
Energy under Contract No. DE-AC02-07CH11358.
NR 9
TC 3
Z9 3
U1 0
U2 5
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 9
AR 092401
DI 10.1103/PhysRevB.80.092401
PG 3
WC Physics, Condensed Matter
SC Physics
GA 501LI
UT WOS:000270383000006
ER
PT J
AU Micklitz, T
Norman, MR
AF Micklitz, T.
Norman, M. R.
TI Odd parity and line nodes in nonsymmorphic superconductors
SO PHYSICAL REVIEW B
LA English
DT Article
ID HEAVY-FERMION SUPERCONDUCTORS; SPACE-GROUP-APPROACH;
ELECTRONIC-STRUCTURE; ORDER-PARAMETER; UBE13; UPT3; SURFACE; PHASES
AB Group theory arguments have been invoked to argue that odd-parity order parameters cannot have line nodes in the presence of spin-orbit coupling. In this Rapid Communication we show that these arguments do not hold for certain nonsymmorphic superconductors. Specifically, we demonstrate that when the underlying crystal has a twofold screw axis, half of the odd-parity representations vanish on the Brillouin-zone face perpendicular to this axis. Many unconventional superconductors have nonsymmorphic space groups, and we discuss implications for several materials, including UPt3, UBe13, Li2Pt3B, and Na4Ir3O8.
C1 [Micklitz, T.; Norman, M. R.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Micklitz, T (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
RI Norman, Michael/C-3644-2013
FU U. S. DOE, Office of Science [DE-AC02-06CH11357]
FX Work at Argonne National Laboratory was supported by the U. S. DOE,
Office of Science, under Contract No. DE-AC02-06CH11357.
NR 33
TC 9
Z9 9
U1 1
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 10
AR 100506
DI 10.1103/PhysRevB.80.100506
PG 4
WC Physics, Condensed Matter
SC Physics
GA 501LJ
UT WOS:000270383100016
ER
PT J
AU Moreo, A
Daghofer, M
Nicholson, A
Dagotto, E
AF Moreo, Adriana
Daghofer, Maria
Nicholson, Andrew
Dagotto, Elbio
TI Interband pairing in multiorbital systems
SO PHYSICAL REVIEW B
LA English
DT Article
ID LAYERED QUATERNARY COMPOUND; PHASE-DIAGRAM; SUPERCONDUCTIVITY; ORDER;
MODEL
AB The discovery of high-T-c superconductivity in the pnictides, materials with a Fermi surface determined by several bands, highlights the need to understand how superconductivity arises in multiband systems. In this effort, using symmetry considerations and mean-field approximations, we discuss how strong hybridization among orbitals may lead to both intraband and interband pairings, and we present calculations of the spectral functions to guide the experimental search for this kind of state.
C1 [Moreo, Adriana] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37966 USA.
Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Moreo, A (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37966 USA.
RI Daghofer, Maria/C-5762-2008
OI Daghofer, Maria/0000-0001-9434-8937
FU NSF [DMR-0706020]; Division of Materials Science and Engineering, U.S.
DOE
FX This work was supported by the NSF under Grant No. DMR-0706020 and the
Division of Materials Science and Engineering, U.S. DOE under contract
with UT-Battelle, LLC.
NR 58
TC 27
Z9 27
U1 1
U2 7
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 10
AR 104507
DI 10.1103/PhysRevB.80.104507
PG 12
WC Physics, Condensed Matter
SC Physics
GA 501LJ
UT WOS:000270383100090
ER
PT J
AU Mosendz, O
Mihajlovic, G
Pearson, JE
Fischer, P
Im, MY
Bader, SD
Hoffmann, A
AF Mosendz, O.
Mihajlovic, G.
Pearson, J. E.
Fischer, P.
Im, M. -Y.
Bader, S. D.
Hoffmann, A.
TI Imaging of lateral spin valves with soft x-ray microscopy
SO PHYSICAL REVIEW B
LA English
DT Article
ID INJECTION; SEMICONDUCTORS; CHARGE; POLARIZATION; CURRENTS
AB We investigated Co/Cu lateral spin valves by means of high-resolution transmission soft x-ray microscopy with magnetic contrast that utilizes x-ray magnetic circular dichroism (XMCD). No magnetic XMCD contrast was observed at the Cu L(3) absorption edge, which should directly image the spin accumulation in Cu, although electrical transport measurements in a nonlocal geometry clearly detected the spin accumulation in Cu, which remained unchanged during illumination with circular polarized x rays at the Co and Cu L(3) absorption edges.
C1 [Mosendz, O.; Mihajlovic, G.; Pearson, J. E.; Bader, S. D.; Hoffmann, A.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Fischer, P.; Im, M. -Y.] Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Xray Opt, Berkeley, CA 94720 USA.
[Bader, S. D.; Hoffmann, A.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
RP Mosendz, O (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM mosendz@anl.gov; hoffmann@anl.gov
RI Hoffmann, Axel/A-8152-2009; MSD, Nanomag/F-6438-2012; Fischer,
Peter/A-3020-2010
OI Hoffmann, Axel/0000-0002-1808-2767; Fischer, Peter/0000-0002-9824-9343
FU Office of Basic Energy Sciences, Materials Sciences and Engineering
Division, of the U.S. Department of Energy [DE-AC02-06CH11357,
DE-AC02-05CH11231]
FX We thank V. Yefremenko and V. Novosad for their help with the SiN
membrane fabrication. The CXRO and ALS staff is highly appreciated. This
work was supported by the Office of Basic Energy Sciences, Materials
Sciences and Engineering Division, of the U.S. Department of Energy,
under Contracts No. DE-AC02-06CH11357 and No. DE-AC02-05CH11231.
NR 35
TC 7
Z9 7
U1 0
U2 6
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 10
AR 104439
DI 10.1103/PhysRevB.80.104439
PG 6
WC Physics, Condensed Matter
SC Physics
GA 501LJ
UT WOS:000270383100082
ER
PT J
AU N'Gom, M
Li, SZ
Schatz, G
Erni, R
Agarwal, A
Kotov, N
Norris, TB
AF N'Gom, Moussa
Li, Shuzhou
Schatz, George
Erni, Rolf
Agarwal, Ashish
Kotov, Nicholas
Norris, Theodore B.
TI Electron-beam mapping of plasmon resonances in electromagnetically
interacting gold nanorods
SO PHYSICAL REVIEW B
LA English
DT Article
ID ENERGY-LOSS; NANOPARTICLES; SPECTROSCOPY; FIELDS; MODES
AB Electron energy-loss spectroscopy and energy-filtered transmission electron-microscope imaging are used to characterize the energy distribution of the surface plasmon of isolated and coupled gold nanorods. Local-field enhancement and spectral shift of the plasmon modes are observed for two interacting nanoparticles. The spatial modes measured by energy loss are shown to share qualitative similarities with the electromagnetic field distribution around gold nanorods induced by optical excitation as simulated using the discrete dipole-approximation method.
C1 [N'Gom, Moussa] Univ Michigan, Dept Appl Phys, Ann Arbor, MI 48109 USA.
[N'Gom, Moussa; Norris, Theodore B.] Univ Michigan, Ctr Ultrafast Opt Sci, Ann Arbor, MI 48109 USA.
[Li, Shuzhou; Schatz, George] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA.
[Erni, Rolf] Univ Calif Berkeley, Lawrence Berkeley Lab, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA.
[Agarwal, Ashish; Kotov, Nicholas] Univ Michigan, Dept Chem Engn, Ann Arbor, MI 48109 USA.
[Norris, Theodore B.] Univ Michigan, Dept EECS, Ann Arbor, MI 48109 USA.
RP N'Gom, M (reprint author), Univ Michigan, Dept Appl Phys, Ann Arbor, MI 48109 USA.
EM mngom@umich.edu
RI Li, Shuzhou/E-3146-2010; Li, Shuzhou/A-2250-2011; Erni,
Rolf/P-7435-2014;
OI Li, Shuzhou/0000-0002-2159-2602; Erni, Rolf/0000-0003-2391-5943; Kotov,
Nicholas/0000-0002-6864-5804
FU U. S. Department of Energy [DE-AC0205CH11231]; MURI [FA9550-06-1-0337];
Northwestern Materials Research Center [DMR-0520513]
FX Part of this work was performed at NCEM, which is supported by the
Office of Science, Office of Basic Energy Sciences of the U. S.
Department of Energy under Contract No. DE-AC0205CH11231. A. A. and N.
K. would like to acknowledge the support by the AFOSR under MURI Grant
No. FA9550-06-1-0337. S. L. and G. C. S. were supported by the
Northwestern Materials Research Center (Grant No. DMR-0520513).
NR 32
TC 51
Z9 51
U1 1
U2 26
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 11
AR 113411
DI 10.1103/PhysRevB.80.113411
PG 4
WC Physics, Condensed Matter
SC Physics
GA 501LK
UT WOS:000270383200026
ER
PT J
AU Nisoli, C
AF Nisoli, Cristiano
TI Polaron-induced deformations in carbon nanotubes studied using the
bicontinuum model
SO PHYSICAL REVIEW B
LA English
DT Article
AB We compute the full elastic deformations, as well as length, of self-trapped electronic states in carbon nanotubes of general radius and chirality, within the unifying framework of a recently presented two field model for electromechanics of carbon nanostructures. We find that deformations are highly nonmonotonic in the chiral angle, whereas the length of the polaron is not. Applications include nanomechanical devices as electrically or optically driven nanoactuators.
C1 [Nisoli, Cristiano] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Nisoli, Cristiano] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
RP Nisoli, C (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
OI Nisoli, Cristiano/0000-0003-0053-1023
FU U.S. Department of Energy at Los Alamos National Laboratory
[DE-AC52-06NA25396]
FX We would like to thank Ryan Kalas (Los Alamos National Laboratory) for
reading the manuscript. This work was carried out under the auspices of
the National Nuclear Security Administration of the U.S. Department of
Energy at Los Alamos National Laboratory under Contract No.
DE-AC52-06NA25396.
NR 22
TC 2
Z9 2
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 11
AR 113406
DI 10.1103/PhysRevB.80.113406
PG 4
WC Physics, Condensed Matter
SC Physics
GA 501LK
UT WOS:000270383200021
ER
PT J
AU Nordberg, EP
Ten Eyck, GA
Stalford, HL
Muller, RP
Young, RW
Eng, K
Tracy, LA
Childs, KD
Wendt, JR
Grubbs, RK
Stevens, J
Lilly, MP
Eriksson, MA
Carroll, MS
AF Nordberg, E. P.
Ten Eyck, G. A.
Stalford, H. L.
Muller, R. P.
Young, R. W.
Eng, K.
Tracy, L. A.
Childs, K. D.
Wendt, J. R.
Grubbs, R. K.
Stevens, J.
Lilly, M. P.
Eriksson, M. A.
Carroll, M. S.
TI Enhancement-mode double-top-gated metal-oxide-semiconductor
nanostructures with tunable lateral geometry
SO PHYSICAL REVIEW B
LA English
DT Article
ID DOUBLE-QUANTUM DOT; SINGLE-ELECTRON; SILICON; SPIN; COMPUTATION;
TRANSISTORS; TRANSITION; TRANSPORT; BLOCKADE; DEVICES
AB We present measurements of silicon (Si) metal-oxide-semiconductor (MOS) nanostructures that are fabricated using a process that facilitates essentially arbitrary gate geometries. Stable Coulomb-blockade behavior showing single-period conductance oscillations that are consistent with a lithographically defined quantum dot is exhibited in several MOS quantum dots with an open-lateral quantum-dot geometry. Decreases in mobility and increases in charge defect densities (i.e., interface traps and fixed-oxide charge) are measured for critical process steps, and we correlate low disorder behavior with a quantitative defect density. This work provides quantitative guidance that has not been previously established about defect densities and their role in gated Si quantum dots. These devices make use of a double-layer gate stack in which many regions, including the critical gate oxide, were fabricated in a fully qualified complementary metal-oxide semiconductor facility.
C1 [Nordberg, E. P.; Ten Eyck, G. A.; Stalford, H. L.; Muller, R. P.; Young, R. W.; Eng, K.; Tracy, L. A.; Childs, K. D.; Wendt, J. R.; Grubbs, R. K.; Stevens, J.; Lilly, M. P.; Carroll, M. S.] Sandia Natl Labs, Albuquerque, NM 87123 USA.
[Nordberg, E. P.; Eriksson, M. A.] Univ Wisconsin, Madison, WI 53706 USA.
[Stalford, H. L.] Univ Oklahoma, Norman, OK 73019 USA.
RP Nordberg, EP (reprint author), Sandia Natl Labs, Albuquerque, NM 87123 USA.
FU Sandia National Laboratories Directed Research and Development Program;
U.S. Department of Energy [DE-AC04-94AL85000]
FX The authors are grateful for sample preparation done by D. Tibbets. The
authors would also like to thank N. Bishop and E. Bielejec for reviewing
the manuscript and helpful discussions. This work was performed, in
part, at the Center for Integrated Nanotechnologies, a U. S. DOE, Office
of Basic Energy Sciences user facility. The work at both Sandia National
Laboratories and the University of Wisconsin was supported by the Sandia
National Laboratories Directed Research and Development Program. Sandia
National Laboratories is a multiprogram laboratory operated by Sandia
Corporation, a Lockheed-Martin Co., for the U.S. Department of Energy
under Contract No. DE-AC04-94AL85000.
NR 49
TC 42
Z9 42
U1 1
U2 6
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 11
AR 115331
DI 10.1103/PhysRevB.80.115331
PG 10
WC Physics, Condensed Matter
SC Physics
GA 501LK
UT WOS:000270383200106
ER
PT J
AU Ohishi, K
Heffner, RH
Ito, TU
Higemoto, W
Morris, GD
Hur, N
Bauer, ED
Sarrao, JL
Thompson, JD
MacLaughlin, DE
Shu, L
AF Ohishi, K.
Heffner, R. H.
Ito, T. U.
Higemoto, W.
Morris, G. D.
Hur, N.
Bauer, E. D.
Sarrao, J. L.
Thompson, J. D.
MacLaughlin, D. E.
Shu, L.
TI Development of the heavy-fermion state in Ce2IrIn8 and the effects of Ce
dilution in (Ce1-xLax)(2)IrIn8
SO PHYSICAL REVIEW B
LA English
DT Article
ID CECU2SI2; SYSTEM; IR; RH
AB We report a study of muon Knight shifts to investigate the formation of the heavy-fermion state in single crystals of (Ce1-xLax)(2)IrIn8. Two different kinds of Knight-shift anomalies (deviations from a linear relation between the Knight shift and the susceptibility) are found: (1) a high-temperature effect arising from depopulation of crystalline electric field levels with temperature, and (2) a lower-temperature anomaly arising from the onset of the heavy-fermion state below a characteristic temperature T*, in agreement with the "two-fluid" model of heavy-fermion formation. In Ce2IrIn8, we find T-c*= 20.0(6) K and T-a*= 15.2(1.2) K for applied field H parallel to c axis and H parallel to a axis, respectively. For the Ce diluted systems (Ce1-xLax)(2)IrIn8, x= 0.1, 0.25, 0.50, 0.70, and 0.90, T* decreases linearly for x <= 0.5, reaching zero near x=0.7, indicating the reduction in intersite f-spin correlations with Ce dilution. A comparison with nuclear magnetic-resonance measurements of Knight-shift anomalies in several other heavy-fermion compounds suggests that the observed small anisotropy in T* may be induced by the applied field, and that T* may be inherently isotropic, even in highly anisotropic materials.
C1 [Ohishi, K.; Heffner, R. H.; Ito, T. U.; Higemoto, W.] Japan Atom Energy Agcy, Tokai, Ibaraki 3191195, Japan.
[Heffner, R. H.; Morris, G. D.; Bauer, E. D.; Sarrao, J. L.; Thompson, J. D.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Ito, T. U.] Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 1528551, Japan.
[Morris, G. D.] TRIUMF, Vancouver, BC V6T 2A3, Canada.
[MacLaughlin, D. E.; Shu, L.] Univ Calif Riverside, Dept Phys, Riverside, CA 92521 USA.
[Hur, N.] Inha Univ, Dept Phys, Inchon 402751, South Korea.
RP Ohishi, K (reprint author), RIKEN, Inst Phys & Chem Res, Adv Meson Sci Lab, Nishina Ctr Accelerator Based Sci, 2-1 Hirosawa, Wako, Saitama 3510198, Japan.
RI Ohishi, Kazuki/E-9592-2010; Bauer, Eric/D-7212-2011; Shu,
Lei/E-7524-2012; Hur, Namjung/G-3752-2013;
OI Ohishi, Kazuki/0000-0003-1494-6502; Ito, Takashi/0000-0003-1971-4313;
Bauer, Eric/0000-0003-0017-1937
FU KEK-MSL Inter-University Program for Oversea Muon Facilities; Ministry
of Education, Culture, Sports, Science and Technology, Japan [18027014];
U.S. D.O.E.; U.S. NSF [DMR-0102293]
FX We would like to thank the TRIUMF mu SR staff for their technical
support, and to acknowledge helpful discussions with N.J. Curro, D.
Pines, Y.-F. Yang, and Z. Fisk. This work was supported by KEK-MSL
Inter-University Program for Oversea Muon Facilities, and by a
Grant-in-Aid for Scientific Research (Grant No. 18027014), the Ministry
of Education, Culture, Sports, Science and Technology, Japan. Work at
LANL performed under the U.S. D.O.E. Work at Riverside supported by the
U.S. NSF, (Grant No. DMR-0102293).
NR 19
TC 4
Z9 5
U1 1
U2 18
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 12
AR 125104
DI 10.1103/PhysRevB.80.125104
PG 7
WC Physics, Condensed Matter
SC Physics
GA 501LL
UT WOS:000270383300025
ER
PT J
AU Park, JW
Eom, SH
Lee, H
Da Silva, JLF
Kang, YS
Lee, TY
Khang, YH
AF Park, Jun-Woo
Eom, Seung Hwan
Lee, Hosun
Da Silva, Juarez L. F.
Kang, Youn-Seon
Lee, Tae-Yon
Khang, Yoon Ho
TI Optical properties of pseudobinary GeTe, Ge2Sb2Te5, GeSb2Te4, GeSb4Te7,
and Sb2Te3 from ellipsometry and density functional theory
SO PHYSICAL REVIEW B
LA English
DT Article
ID PHASE-CHANGE MATERIALS; AUGMENTED-WAVE METHOD; CHANGE MEMORIES;
THIN-FILMS; TRANSITIONS; MICROSCOPY; RESISTANCE; DYNAMICS; SILICON; DISK
AB We study the optical properties and the band structures of (GeTe, Sb2Te3) pseudobinary compounds experimentally and theoretically by using spectroscopic ellipsometry and density functional calculations. We measure the dielectric functions of (GeTe, Sb2Te3) pseudobinary thin films-GeTe, Ge2Sb2Te5, Ge1Sb2Te4, Ge1Sb4Te7, and Sb2Te3-by using spectroscopic ellipsometry. We anneal the thin films at various temperatures. According to x-ray diffraction, the as-grown thin films are amorphous and the annealed films have metastable and stable crystalline phases. By using standard critical-point model, we obtain the accurate values of the energy gap of the amorphous phase as well as the critical-point energies of the metastable and stable crystalline thin films. The optical gap (indirect band gap) energy of the amorphous (crystalline) thin films is estimated by the equation, (alpha E)(1/2)= A(E-E-opt(ind)). As the Sb-to-Ge atomic ratio increases, the optical (band) gap energy of amorphous) crystalline) phase decreases. Standard critical-point model analysis shows several higher band gaps. The electronic band structures, the dielectric functions, and the absorption coefficients of the thin films are calculated by using density functional theory (DFT) and are compared to the measured ones. The bandstructure calculations show in stable phase that GeTe, Ge2Sb2Te5, and Ge1Sb2Te4 have indirect gap whereas Ge1Sb4Te7 and Sb2Te3 have direct gap. The band gaps of metastable phase have similar behavior. The measured indirect band-gap energies are compared to those of the electronic band-structure calculations. The experimental critical-point energies of the pseudobinary compounds, especially GeTe, match well to those of theoretical calculation. The DFT calculations show that the stable and metastable phases have similar dielectric functions and absorption properties, etc., because of the similarity between the lowest-energy crystal structures for both the stable and metastable phases. However, experimental results show that there exist important differences between those of the stable and metastable phases. We discuss the discrepancy in terms of insufficient ordering of vacancies in the real materials of metastable phase.
C1 [Park, Jun-Woo; Eom, Seung Hwan; Lee, Hosun] Kyung Hee Univ, Dept Appl Phys, Suwon 446701, South Korea.
[Da Silva, Juarez L. F.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Kang, Youn-Seon; Lee, Tae-Yon; Khang, Yoon Ho] Samsung Elect R&D Ctr, New Memory Lab, Suwon 440600, South Korea.
RP Lee, H (reprint author), Kyung Hee Univ, Dept Appl Phys, Suwon 446701, South Korea.
EM hlee@khu.ac.kr
RI Da Silva, Juarez L. F./D-1779-2011; Park, Jun-Woo/N-5571-2015
OI Da Silva, Juarez L. F./0000-0003-0645-8760;
FU Korea Government (MOST) [R01-2007-000-20142-0, KRF-2005-005J00802];
Graduate School, Kyung Hee University
FX This work was supported by the Korea Science and Engineering Foundation
(KOSEF) grant funded by the Korea Government (MOST) (Grant No.
R01-2007-000-20142-0). S. H. Eom was supported by the Korea Research
Foundation (KRF) funded by the Korean Government (MOEHRD, Basic Research
Promotion Fund) under Grant No. KRF-2005-005J00802. J. W. Park was
supported by Graduate School, Kyung Hee University.
NR 58
TC 57
Z9 59
U1 7
U2 64
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 11
AR 115209
DI 10.1103/PhysRevB.80.115209
PG 14
WC Physics, Condensed Matter
SC Physics
GA 501LK
UT WOS:000270383200067
ER
PT J
AU Reboredo, FA
AF Reboredo, Fernando Agustin
TI Systematic reduction of sign errors in many-body problems:
Generalization of self-healing diffusion Monte Carlo to excited states
SO PHYSICAL REVIEW B
LA English
DT Article
ID ELECTRON-GAS; WAVE-FUNCTION; MOLECULES; ENERGIES
AB A recently developed self-healing diffusion Monte Carlo algorithm [F. A. Reboredo, R. Q. Hood, and P. R. C. Kent, Phys. Rev. B 79, 195117 (2009)] is extended to the calculation of excited states. The formalism is based on an excited-state fixed-node approximation and the mixed estimator of the excited-state probability density. The fixed-node ground-state wave-functions of inequivalent nodal pockets are found simultaneously using a recursive approach. The decay of the wave-function into lower-energy states is prevented using two methods: (i) the projection of the improved trial-wave function into previously calculated eigenstates is removed; and (ii) the reference energy for each nodal pocket is adjusted in order to create a kink in the global fixed-node wave-function, which, when locally smoothed, increases the volume of the higher-energy pockets at the expense of the lower-energy ones until the energies of every pocket become equal. This reference energy method is designed to find nodal structures that are local minima for arbitrary fluctuations of the nodes within a given nodal topology. It is demonstrated in a model system that the algorithm converges to many-body eigenstates in bosonic and fermionic cases.
C1 Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Reboredo, FA (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
FU Department of Energy; Laboratory Directed Research and Development
Program of Oak Ridge National Laboratory, managed by UT-Battelle, LLC,
for the U.S. Department of Energy [DE-AC05-00OR22725]
FX The author would like thank C. Umrigar for suggesting the sampling of
delta lambdan instead of the absolute value of the
coefficients. The author also thanks R. Q. Hood, M. Bajdich and P. R. C.
Kent for a critical reading of the manuscript and for related
discussions. Research performed at the Materials Science and Technology
Division sponsored by the Department of Energy and the Laboratory
Directed Research and Development Program of Oak Ridge National
Laboratory, managed by UT-Battelle, LLC, for the U.S. Department of
Energy under Contract No. DE-AC05-00OR22725.
NR 28
TC 5
Z9 5
U1 0
U2 5
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
EI 1550-235X
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 12
AR 125110
DI 10.1103/PhysRevB.80.125110
PG 11
WC Physics, Condensed Matter
SC Physics
GA 501LL
UT WOS:000270383300031
ER
PT J
AU Romero, MJ
van de Lagemaat, J
AF Romero, Manuel J.
van de Lagemaat, Jao
TI Luminescence of quantum dots by coupling with nonradiative surface
plasmon modes in a scanning tunneling microscope
SO PHYSICAL REVIEW B
LA English
DT Article
ID LIGHT-EMISSION SPECTROSCOPY; PHOTON-EMISSION; METAL-SURFACES; STM
AB The electronic coupling between quantum dots (QDs) and surface plasmons (SPs) is investigated by a luminescence spectroscopy based on scanning tunneling microscopy (STM). We show that tunneling luminescence from the dot is excited by coupling with the nonradiative plasmon mode oscillating at the metallic tunneling gap formed during the STM operation. This approach to the SP excitation reveals aspects of the SP-QD coupling not accessible to the more conventional optical excitation of SPs. In the STM, luminescence from the dot is observed when and only when the SP is in resonance with the fundamental transition of the dot. The tunneling luminescence spectrum also suggests that excited SP-QD hybrid states can participate in the excitation of QD luminescence. Not only the SP excitation regulates the QD luminescence but the presence of the dot at the tunneling gap imposes restrictions to the SP that can be excited in the STM, in which the SP cannot exceed the energy of the fundamental transition of the dot. The superior SP-QD coupling observed in the STM is due to the tunneling gap acting as a tunable plasmonic resonator in which the dot is fully immersed.
C1 [Romero, Manuel J.; van de Lagemaat, Jao] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Romero, MJ (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA.
EM manuel.romero@nrel.gov
RI van de Lagemaat, Jao/J-9431-2012
FU U.S. Department of Energy; Office of Science; Basic Energy Sciences;
Division of Chemical Sciences; Geosciences and Biosciences
[DE-AC36-99GO10337]
FX This work was funded by the Photochemistry and Radiation Research
Program of the U.S. Department of Energy, Office of Science, Basic
Energy Sciences, Division of Chemical Sciences, Geosciences and
Biosciences, under Contract No. DE-AC36-99GO10337 to NREL.
NR 22
TC 12
Z9 12
U1 0
U2 20
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 11
AR 115432
DI 10.1103/PhysRevB.80.115432
PG 5
WC Physics, Condensed Matter
SC Physics
GA 501LK
UT WOS:000270383200144
ER
PT J
AU Russo, PL
Sugiyama, J
Brewer, JH
Ansaldo, EJ
Stubbs, SL
Chow, KH
Jin, RY
Sha, H
Zhang, JD
AF Russo, Peter L.
Sugiyama, Jun
Brewer, Jess H.
Ansaldo, Eduardo J.
Stubbs, Scott L.
Chow, Kim H.
Jin, Rongying
Sha, Hao
Zhang, Jiandi
TI Muon spin rotation and relaxation study of Ba2CoO4
SO PHYSICAL REVIEW B
LA English
DT Article
AB A positive muon spin rotation and relaxation (mu+SR) experiment on a single crystal of Ba2CoO4 indicates the existence of an antiferromagnetic (AF) transition occurring at T-N approximate to 24 K. Weak transverse field measurements show that the paramagnetic volume fraction of the sample decreases rapidly at the magnetic transition, indicating a bulk effect which cannot be due to the presence of impurities. Zero-field measurements reveal the presence of a magnetically ordered state below T-N with at least three crystallographically inequivalent muon sites. The results are compared to recent magnetic susceptibility and neutron measurements. Of the two AF spin structures proposed to explain recent neutron experiments, the mu+SR results clearly exclude the one involving AF order along the c axis while supporting that with AF order in the ab plane.
C1 [Russo, Peter L.; Ansaldo, Eduardo J.] TRIUMF, Vancouver, BC V6T 2A3, Canada.
[Sugiyama, Jun] Toyota Cent Res & Dev Labs Inc, Aichi 4801192, Japan.
[Brewer, Jess H.] TRIUMF, CIfAR, Vancouver, BC V6T 1Z1, Canada.
[Brewer, Jess H.; Stubbs, Scott L.] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada.
[Chow, Kim H.] Univ Alberta, Dept Phys, Edmonton, AB T6G 2G7, Canada.
[Jin, Rongying] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Sha, Hao; Zhang, Jiandi] Florida Int Univ, Dept Phys, Miami, FL 33199 USA.
RP Russo, PL (reprint author), TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada.
EM jess@triumf.ca
RI Sha, Hao/D-8107-2011; Sugiyama, Jun/M-6535-2015
OI Sugiyama, Jun/0000-0002-0916-5333
FU KEK-MSL Inter-University Program; Canadian Institute for Advanced
Research; Natural Sciences and Engineering Research Council (NSERC) of
Canada; National Research Council of Canada; U.S. DOE [FG02-04ER46125,
DE-AC05-00OR22725]; Division of Materials Sciences and Engineering;
Office of Basic Energy Sciences; MEXT Japan [19340107]
FX We would like to thank S. R. Kreitzman, B. Hitti, and D. J. Arseneau of
TRIUMF for help with experiments. J. S. is partially supported by the
KEK-MSL Inter-University Program for Oversea Muon Facilities. J. H. B
was supported by the Canadian Institute for Advanced Research, the
Natural Sciences and Engineering Research Council (NSERC) of Canada and,
through TRIUMF, by the National Research Council of Canada. K. H. C is
supported by NSERC. H. S. and J.Z. acknowledge support by the U. S. DOE
(Grant No. FG02-04ER46125). Research at ORNL is supported by the
Division of Materials Sciences and Engineering, Office of Basic Energy
Sciences, U. S. DOE (Contract No. DE-AC05-00OR22725). This work is also
supported by a Grant-in-Aid for Scientific Research (B), (Grant No.
19340107) MEXT Japan. All images involving crystal structure were made
with VICS-II (now VESTA).
NR 17
TC 7
Z9 7
U1 2
U2 7
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 10
AR 104421
DI 10.1103/PhysRevB.80.104421
PG 7
WC Physics, Condensed Matter
SC Physics
GA 501LJ
UT WOS:000270383100064
ER
PT J
AU Safarik, DJ
Schwarz, RB
AF Safarik, D. J.
Schwarz, R. B.
TI Evidence for highly anharmonic low-frequency vibrational modes in bulk
amorphous Pd40Cu40P20
SO PHYSICAL REVIEW B
LA English
DT Article
DE amorphous state; copper alloys; elastic constants; Gruneisen
coefficient; lattice dynamics; metallic glasses; palladium alloys;
phosphorus alloys; shear modulus; vibrational modes
ID RESONANT ULTRASOUND SPECTROSCOPY; 3RD-ORDER ELASTIC MODULI;
LOW-TEMPERATURES; VITREOUS SILICA; SOUND-VELOCITY; INTERSTITIALCY MODEL;
ACOUSTIC PROPERTIES; CUBIC METALS; FCC METALS; GLASSES
AB We have measured the elastic constants of amorphous Pd40Cu40P20 (isotropic, two independent elastic constants), single crystal Pd40Cu40P20 (tetragonal, six elastic constants), and single crystal Pd50Cu50 (fcc, three elastic constants) over the range 3.9 < T < 300 K. The temperature dependences of the shear moduli of crystalline Pd40Cu40P20 and Pd50Cu50 are well described by C(T)=C(0)-BT2+Delta C-Lat(T), where BT2 gives the electronic contribution and Delta C-Lat(T) is the contribution due to the anharmonicity of the lattice vibrations. The temperature dependence of the shear modulus of amorphous Pd40Cu40P20 includes an additional contribution, Delta C-E(T), which becomes dominant for T < 20 K: C(T)=C(0)-BT2+Delta C-Lat(T)+Delta C-E(T). The Delta C-E(T) contribution can be explained by the presence of a small number of low-frequency, highly anharmonic vibrational modes, which we characterize as Einstein oscillators with temperature theta(E)approximate to 12 K and Gruumlneisen parameter gamma(C')(E)2. Theory and computer modeling suggest that these modes involve the collective vibration of stringlike arrays of atoms.
C1 [Safarik, D. J.; Schwarz, R. B.] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
RP Safarik, DJ (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
OI Safarik, Douglas/0000-0001-8648-9377
NR 54
TC 3
Z9 3
U1 1
U2 10
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 9
AR 094109
DI 10.1103/PhysRevB.80.094109
PG 14
WC Physics, Condensed Matter
SC Physics
GA 501LI
UT WOS:000270383000032
ER
PT J
AU Savici, AT
Granroth, GE
Broholm, CL
Pajerowski, DM
Brown, CM
Talham, DR
Meisel, MW
Schmidt, KP
Uhrig, GS
Nagler, SE
AF Savici, A. T.
Granroth, G. E.
Broholm, C. L.
Pajerowski, D. M.
Brown, C. M.
Talham, D. R.
Meisel, M. W.
Schmidt, K. P.
Uhrig, G. S.
Nagler, S. E.
TI Neutron scattering evidence for isolated spin-1/2 ladders in
(C5D12N)(2)CuBr4
SO PHYSICAL REVIEW B
LA English
DT Article
ID ANTIFERROMAGNETIC CHAIN; MAGNETIC-SUSCEPTIBILITY; PERTURBATION-THEORY;
DYNAMICS; MODELS; SUPERCONDUCTIVITY; EXPANSIONS; COMPOUND; SPECTRUM;
SYSTEMS
AB Inelastic neutron scattering was used to determine the spin Hamiltonian for the singlet ground-state system of fully deuterated BPCB, (C5D12N)(2)CuBr4. A two-leg spin-1/2 ladder model, with J(perpendicular to) = (1.09 +/- 0.01) meV and J(parallel to) = (0.296 +/- 0.005) meV, accurately describes the data. The experimental limit on the effective interladder exchange constant is vertical bar J(int)(eff)vertical bar less than or similar to 0.006 meV, and the limit on total diagonal, intraladder exchange is vertical bar J(F)+J(F')vertical bar <= 0.1 meV. Including the effects of copper to bromide covalent spin transfer on the magnetic form factor, the experimental ratios of intraladder bond energies are consistent with the predictions of continuous unitary transformation.
C1 [Savici, A. T.; Broholm, C. L.] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA.
[Granroth, G. E.; Nagler, S. E.] Oak Ridge Natl Lab, Neutron Scattering Sci Lab, Oak Ridge, TN 37831 USA.
[Broholm, C. L.; Brown, C. M.] Natl Inst Stand & Technol, NCNR, Gaithersburg, MD 20899 USA.
[Pajerowski, D. M.; Meisel, M. W.] Univ Florida, Dept Phys, Gainesville, FL 32611 USA.
[Pajerowski, D. M.; Meisel, M. W.] Univ Florida, NHMFL, Gainesville, FL 32611 USA.
[Talham, D. R.] Univ Florida, Dept Chem, Gainesville, FL 32611 USA.
[Schmidt, K. P.; Uhrig, G. S.] Lehrstuhl Theoret Phys 1, D-44221 Dortmund, Germany.
RP Savici, AT (reprint author), Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA.
EM saviciat@ornl.gov
RI Schmidt, Kai /C-7286-2009; Broholm, Collin/E-8228-2011; Nagler,
Stephen/B-9403-2010; Uhrig, Gotz/F-4940-2011; Nagler,
Stephen/E-4908-2010; Granroth, Garrett/G-3576-2012; Savici,
Andrei/F-2790-2013; Brown, Craig/B-5430-2009;
OI Broholm, Collin/0000-0002-1569-9892; Nagler,
Stephen/0000-0002-7234-2339; Granroth, Garrett/0000-0002-7583-8778;
Savici, Andrei/0000-0001-5127-8967; Brown, Craig/0000-0002-9637-9355;
Schmidt, Kai Phillip/0000-0002-8278-8238; Pajerowski,
Daniel/0000-0003-3890-2379
FU NSF [DMR-0454672]; CLB and ATS [DMR-0603126]; DMP and MWM [DMR-0701400];
DRT [DMR-0453362]; U.S. Department of Energy under [DE-AC05-00OR22725];
ESF and EuroHorcs
FX The authors thank T. E. Sherline and J. R. D. Copley for technical
assistance during the experiment and D. A. Jensen for generating the
samples. We also thank Y. Qiu for help in extracting data from the DAVE
software package. We acknowledge helpful comments from C. Ruegg. The NSF
funds the NCNR under Agreement No. DMR-0454672, CLB and ATS through
Grant No. DMR-0603126, DMP and MWM through Grant No. DMR-0701400, DRT
through DMR-0453362, and the NHMFL via cooperative Agreement No.
DMR-0654118. ORNL is managed by UT-Battelle, LLC, for the U.S.
Department of Energy under Contract No. DE-AC05-00OR22725. K. P. S.
acknowledges ESF and EuroHorcs for funding through his EURYI. GSU
acknowledges the support of the Heinrich-Hertz Stiftung NRW for his
leave. ATS appreciates the hospitality afforded to him as a visiting
scientist in the Neutron Scattering Sciences Division at ORNL.
NR 51
TC 19
Z9 19
U1 1
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 9
AR 094411
DI 10.1103/PhysRevB.80.094411
PG 8
WC Physics, Condensed Matter
SC Physics
GA 501LI
UT WOS:000270383000057
ER
PT J
AU Shen, NH
Foteinopoulou, S
Kafesaki, M
Koschny, T
Ozbay, E
Economou, EN
Soukoulis, CM
AF Shen, Nian-Hai
Foteinopoulou, Stavroula
Kafesaki, Maria
Koschny, Thomas
Ozbay, Ekmel
Economou, Eleftherios N.
Soukoulis, Costas M.
TI Compact planar far-field superlens based on anisotropic left-handed
metamaterials
SO PHYSICAL REVIEW B
LA English
DT Article
ID NEGATIVE REFRACTIVE-INDEX; PHOTONIC METAMATERIALS; OPTICAL HYPERLENS;
MEDIA
AB Pendry's perfect lens has spurred intense interest for its practical realization at visible frequencies. However, fabrication of low-loss isotropic left-handed metamaterials is a current challenge. In this work, we theoretically show that under specific conditions anisotropic metamaterial slabs can emulate Pendry's perfect-lens phenomenon on a plane. Geometric optics leads to a new lens formula for this special anisotropic metamaterial superlens, which allows significant shrinkage of the metamaterial slab thickness for a certain range of far-field operation. Conversely, such anisotropic metamaterial superlens with the same thickness as its isotropic analog can operate for much larger distances between object and lens. We present numerical simulations which confirm our theoretical calculations. In particular, we find subdiffraction focusing that rivals the perfect isotropic negative-index metamaterial lens performance and obeys the new lens formula as predicted. In addition, we demonstrate that it is possible to attain far-field superfocusing with a metamaterial slab as thin as half the free-space wavelength. We believe this work will inspire new anisotropic metamaterial designs and opens a promising route for the realization of compact far-field superlenses in the visible regime.
C1 [Shen, Nian-Hai; Foteinopoulou, Stavroula; Kafesaki, Maria; Koschny, Thomas; Economou, Eleftherios N.; Soukoulis, Costas M.] Fdn Res & Technol Hellas, IESL, Iraklion 71110, Crete, Greece.
[Foteinopoulou, Stavroula; Koschny, Thomas; Soukoulis, Costas M.] US DOE, Ames Lab, Ames, IA 50011 USA.
[Foteinopoulou, Stavroula; Koschny, Thomas; Soukoulis, Costas M.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Kafesaki, Maria; Soukoulis, Costas M.] Univ Crete, Dept Mat Sci & Technol, Iraklion 71003, Crete, Greece.
[Ozbay, Ekmel] Bilkent Univ, Dept Phys, Nanotechnol Res Ctr, TR-06800 Ankara, Turkey.
[Ozbay, Ekmel] Bilkent Univ, Dept Elect & Elect Engn, TR-06800 Ankara, Turkey.
RP Shen, NH (reprint author), Fdn Res & Technol Hellas, IESL, Iraklion 71110, Crete, Greece.
EM nhshen@iesl.forth.gr; soukoulis@ameslab.gov
RI Economou, Eleftherios /E-6374-2010; Shen, Nianhai/E-5543-2012; Kafesaki,
Maria/E-6843-2012; Soukoulis, Costas/A-5295-2008
OI Kafesaki, Maria/0000-0002-9524-2576;
FU EU [213390]; COST [MP0702, MP0803]; Air Force Office of Scientific
Research, Air Force Material Command, USAF [FA8655-07-1-3037];
Department of Energy (Basic Energy Science) [DE-ACD2-07CH11358]
FX Authors would like to acknowledge financial support by EU under the
projects PHOME (FET Contract No. 213390), ENSEMBLE (NMP-STREP), and
ECONAM (NMP-CA), and the COST Actions MP0702 and MP0803; also by the Air
Force Office of Scientific Research, Air Force Material Command, USAF
(Grant No. FA8655-07-1-3037). Work at Ames Laboratory was supported by
the Department of Energy (Basic Energy Science) under Contract No.
DE-ACD2-07CH11358.
NR 34
TC 14
Z9 14
U1 1
U2 12
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 11
AR 115123
DI 10.1103/PhysRevB.80.115123
PG 9
WC Physics, Condensed Matter
SC Physics
GA 501LK
UT WOS:000270383200051
ER
PT J
AU Singh, Y
Green, MA
Huang, Q
Kreyssig, A
McQueeney, RJ
Johnston, DC
Goldman, AI
AF Singh, Yogesh
Green, M. A.
Huang, Q.
Kreyssig, A.
McQueeney, R. J.
Johnston, D. C.
Goldman, A. I.
TI Magnetic order in BaMn2As2 from neutron diffraction measurements
SO PHYSICAL REVIEW B
LA English
DT Article
ID BA; SUPERCONDUCTIVITY; CRYSTAL; A=SR; SB
AB Neutron diffraction measurements have been performed on a powder sample of BaMn2As2 over the temperature T range from 10 to 675 K. These measurements demonstrate that this compound exhibits collinear antiferromagnetic ordering below the Neel temperature T-N=625(1) K. The ordered moment mu = 3.88(4)mu(B)/Mn at T = 10 K is oriented along the c axis and the magnetic structure is G type, with all nearest-neighbor Mn moments antiferromagnetically aligned. The value of the ordered moment indicates that the oxidation state of Mn is Mn2+ with a high spin S=5/2. The T dependence of mu suggests that the magnetic transition is second order in nature. In contrast to the closely related AFe(2)As(2) (A = Ca, Sr, Ba, and Eu) compounds, no structural distortion is observed in the magnetically ordered state of BaMn2As2. Our results indicate that while next-nearest-neighbor interactions are important in the AFe(2)As(2) materials, nearest-neighbor interactions are dominant in BaMn2As2.
C1 [Singh, Yogesh; Kreyssig, A.; McQueeney, R. J.; Johnston, D. C.; Goldman, A. I.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
[Singh, Yogesh; Kreyssig, A.; McQueeney, R. J.; Johnston, D. C.; Goldman, A. I.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Green, M. A.; Huang, Q.] Natl Inst Stand & Technol, Ctr Neutron Res, Gaithersburg, MD 20899 USA.
[Green, M. A.; Huang, Q.] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA.
RP Singh, Y (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
RI McQueeney, Robert/A-2864-2016; singh, yogesh/F-7160-2016
OI McQueeney, Robert/0000-0003-0718-5602;
FU Department of Energy-Basic Energy Sciences [DE-AC02-07CH11358]
FX Work at the Ames Laboratory was supported by the Department of
Energy-Basic Energy Sciences under Contract No. DE-AC02-07CH11358.
NR 34
TC 80
Z9 80
U1 4
U2 46
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 10
AR 100403
DI 10.1103/PhysRevB.80.100403
PG 4
WC Physics, Condensed Matter
SC Physics
GA 501LJ
UT WOS:000270383100005
ER
PT J
AU Skornyakov, SL
Efremov, AV
Skorikov, NA
Korotin, MA
Izyumov, YA
Anisimov, VI
Kozhevnikov, AV
Vollhardt, D
AF Skornyakov, S. L.
Efremov, A. V.
Skorikov, N. A.
Korotin, M. A.
Izyumov, Yu. A.
Anisimov, V. I.
Kozhevnikov, A. V.
Vollhardt, D.
TI Classification of the electronic correlation strength in the iron
pnictides: The case of the parent compound BaFe2As2
SO PHYSICAL REVIEW B
LA English
DT Article
DE band structure; barium compounds; density functional theory;
high-temperature superconductors; iron compounds; photoelectron spectra
ID DENSITY-FUNCTIONAL CALCULATION; MEAN-FIELD THEORY; SYSTEMS;
SUPERCONDUCTIVITY; DIMENSIONS; IMPURITIES; METALS
AB Electronic correlations in the Fe-pnictide BaFe2As2 are explored within LDA+DMFT, the combination of density functional theory with dynamical mean-field theory. While the correlated band structure is substantially renormalized there is only little transfer of spectral weight. The computed k-integrated and k-resolved spectral functions are in good agreement with photoemission spectroscopy (PES) and angular resolved PES experiments. Making use of a general classification scheme for the strength of electronic correlations we conclude that BaFe2As2 is a moderately correlated system.
C1 [Skornyakov, S. L.; Efremov, A. V.; Skorikov, N. A.; Korotin, M. A.; Izyumov, Yu. A.; Anisimov, V. I.] Russian Acad Sci, Inst Met Phys, Ekaterinburg 620041, Russia.
[Kozhevnikov, A. V.] Oak Ridge Natl Lab, Joint Inst Computat Sci, Oak Ridge, TN 37831 USA.
[Vollhardt, D.] Univ Augsburg, Inst Phys, Ctr Elect Correlat & Magnetism, D-86135 Augsburg, Germany.
RP Skornyakov, SL (reprint author), Russian Acad Sci, Inst Met Phys, GSP-170, Ekaterinburg 620041, Russia.
RI Izyumov, Yuri/K-3449-2013; Skornyakov, Sergey/K-8132-2013; Skorikov,
Nikolay/A-6728-2012; Korotin, Michael/J-3252-2013; Efremov,
Andrey/J-3524-2013; Anisimov, Vladimir/K-1235-2013
OI Izyumov, Yuri/0000-0002-0956-035X; Skornyakov,
Sergey/0000-0001-8024-0917; Skorikov, Nikolay/0000-0002-3771-8708;
Korotin, Michael/0000-0002-9603-8374; Efremov,
Andrey/0000-0001-5713-0437; Anisimov, Vladimir/0000-0002-1087-1956
FU Russian Foundation [RFFI-07-02-00041]; Dynasty Foundation; Russian
Federation [NSH 1941.2008.2]; Russian Academy of Science Presidium;
Federal Agency for Science and Innovations [02.740.11.0217]; Deutsche
Forschungsgemeinschaft [SFB 484]
FX The authors thank Jan Kunes for providing his DMFT (QMC) computer code
used in our calculations. Support by the Russian Foundation for Basic
Research under Grant No. RFFI-07-02-00041, the Dynasty Foundation, the
fund of the President of the Russian Federation for the support of
scientific schools under Grant No. NSH 1941.2008.2, the Program of the
Russian Academy of Science Presidium" Quantum microphysics of condensed
matter" N7, the Federal Agency for Science and Innovations under Grant
No. 02.740.11.0217, and the Deutsche Forschungsgemeinschaft through
Sonderforschungsbereich SFB 484 is gratefully acknowledged.
NR 38
TC 64
Z9 65
U1 1
U2 16
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 9
AR 092501
DI 10.1103/PhysRevB.80.092501
PG 4
WC Physics, Condensed Matter
SC Physics
GA 501LI
UT WOS:000270383000015
ER
PT J
AU Solovyov, VF
Develos-Bagarinao, K
Nykypanchuk, D
AF Solovyov, Vyacheslav F.
Develos-Bagarinao, Katherine
Nykypanchuk, Dmytro
TI Nanoscale abnormal grain growth in (001) epitaxial ceria
SO PHYSICAL REVIEW B
LA English
DT Article
ID CEO2 THIN-FILMS; X-RAY-DIFFRACTION; DISLOCATION DENSITIES; STRUCTURAL
PERFECTION; STRAIN RELAXATION; SIZE DISTRIBUTION; 1102 SAPPHIRE;
EVOLUTION; SURFACES; RECRYSTALLIZATION
AB X-ray reciprocal-space mapping and atomic force microscopy (AFM) are used to study kinetics and mechanisms of lateral grain growth in epitaxial (001) ceria (CeO(2)) deposited by pulsed laser deposition on (001) yttria-stabilized zirconia (YSZ) and (1 (2) under bar 10) (r-cut) sapphire. Rate and character of the grain growth during postannealing at 1050 degrees C are found to be strongly dependent on the type of the epitaxial substrate. Films deposited on YSZ exhibit signatures of normal grain growth, which stagnated after the lateral grain size reaches 40 nm, consistent with the grain-boundary pinning by the thermal grooving. In contrast, when r-cut sapphire substrate was used, abnormal (secondary) grain growth is observed. A small population of grains grow to well over 100 nm consuming smaller, <10 nm, grains, thus forming well-defined >100 nm large (001) terminations and rendering the sample single-crystalline quality. The grain growth is accompanied by reduction in lateral rms strain, resulting in a universal grain size-rms strain dependence. Analysis of the AFM and x-ray diffraction data leads to the conclusion that bimodal initial grain population consisting of grains with very different sizes is responsible for initiation of the abnormal growth in (001) CeO(2) films on r-cut sapphire. Due to different surface chemistry, when a YSZ substrate is used, the initial grain distribution is monomodal, therefore only normal growth is active. We demonstrate that a 2.2 degrees miscut of the sapphire substrate eliminates the large-grain population, thus suppressing abnormal grain growth. It is concluded that utilization of abnormal grain growth is a promising way for synthesis of large (001) ceria terminations.
C1 [Solovyov, Vyacheslav F.] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA.
[Develos-Bagarinao, Katherine] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058568, Japan.
[Nykypanchuk, Dmytro] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
RP Solovyov, VF (reprint author), Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA.
EM solov@bnl.gov
RI Develos-Bagarinao, Katherine/C-6649-2011; Solovyov,
Vyacheslav/A-7724-2009;
OI Develos-Bagarinao, Katherine/0000-0001-6846-191X; Solovyov,
Vyacheslav/0000-0003-1879-9802
FU Office of Electricity Delivery and Energy Reliability, U. S. Department
of Energy [DE-AC02-98CH10886]
FX This paper has been authored by Brookhaven Science Associates, LLC under
contract with the Office of Electricity Delivery and Energy Reliability,
U. S. Department of Energy. Research was carried out in part at the
Center for Functional Nanomaterials, Brookhaven National Laboratory,
which is supported by the Office of Basic Energy Sciences, U. S.
Department of Energy under Contract No. DE-AC02-98CH10886. We would like
to thank Mas Suenaga, Arnie Moodenbaugh, Steven Shapiro, and David Welch
from Brookhaven National Laboratory and Eliot Specht from Oak Ridge
National Laboratory for helpful comments and suggestions. We greatly
appreciate help from Jennifer Rupp, ETH Zurich, Switzerland for
providing digital data used in this work.
NR 70
TC 16
Z9 16
U1 0
U2 20
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 10
AR 104102
DI 10.1103/PhysRevB.80.104102
PG 12
WC Physics, Condensed Matter
SC Physics
GA 501LJ
UT WOS:000270383100020
ER
PT J
AU Steger, M
Yang, A
Thewalt, MLW
Cardona, M
Riemann, H
Abrosimov, NV
Churbanov, MF
Gusev, AV
Bulanov, AD
Kovalev, ID
Kaliteevskii, AK
Godisov, ON
Becker, P
Pohl, HJ
Haller, EE
Ager, JW
AF Steger, M.
Yang, A.
Thewalt, M. L. W.
Cardona, M.
Riemann, H.
Abrosimov, N. V.
Churbanov, M. F.
Gusev, A. V.
Bulanov, A. D.
Kovalev, I. D.
Kaliteevskii, A. K.
Godisov, O. N.
Becker, P.
Pohl, H. -J.
Haller, E. E.
Ager, J. W., III
TI High-resolution absorption spectroscopy of the deep impurities S and Se
in Si-28 revealing the Se-77 hyperfine splitting
SO PHYSICAL REVIEW B
LA English
DT Article
ID ISOTOPICALLY ENRICHED SILICON; TELLURIUM DONORS; SULFUR; CENTERS;
STATES; SEMICONDUCTORS; SELENIUM; SHIFT
AB Recently, studies have demonstrated remarkable improvements in absorption spectroscopy of shallow impurities by using highly enriched Si-28 to eliminate the inhomogeneous isotope broadening inherent in natural Si. Here, we show that similar dramatic improvements in the linewidths of electronic transitions can be achieved with the two chalcogens sulfur and selenium in Si-28. The S+ and Se+ 1s (T-2) transitions exhibit a full width at half maximum of only 0.008 cm(-1) for the Gamma(7) component-more than one order of magnitude sharper than in natural silicon and a factor of 1.5 narrower than the width of the sharpest shallow impurity transition in Si-28. Hence they are the narrowest lines ever seen for impurity states in silicon. Fine structure is revealed in the absorption spectrum of the Se double donor and the Se-77(+) 1s (T-2) Gamma(7) transition shows a splitting due to a hyperfine coupling with the I=1/2 nuclear spin. Under an applied magnetic field, the electronic, and nuclear spins can be individually determined with potential applications in quantum computing.
C1 [Steger, M.; Yang, A.; Thewalt, M. L. W.] Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada.
[Cardona, M.] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany.
[Riemann, H.; Abrosimov, N. V.] Inst Crystal Growth IKZ, D-12489 Berlin, Germany.
[Churbanov, M. F.; Gusev, A. V.; Bulanov, A. D.; Kovalev, I. D.] RAS, IChHPS, Nizhnii Novgorod 603000, Russia.
[Kaliteevskii, A. K.; Godisov, O. N.] Sci & Tech Ctr Ctr Tech, St Petersburg 198096, Russia.
[Becker, P.] Phys Tech Bundesanstalt, D-38116 Braunschweig, Germany.
[Pohl, H. -J.] VITCON Projectconsult GmbH, D-07743 Jena, Germany.
[Haller, E. E.; Ager, J. W., III] Univ Calif Berkeley, Berkeley, CA 94720 USA.
[Haller, E. E.; Ager, J. W., III] LBNL, Berkeley, CA 94720 USA.
RP Steger, M (reprint author), Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada.
EM thewalt@sfu.ca
OI Ager, Joel/0000-0001-9334-9751
FU NSERC
FX This work was supported by NSERC and A. Y. thanks NSERC for additional
support. We thank B. Pajot for allowing us to use his
natSi:natSe spectrum and for useful discussions.
NR 21
TC 13
Z9 13
U1 0
U2 12
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 11
AR 115204
DI 10.1103/PhysRevB.80.115204
PG 8
WC Physics, Condensed Matter
SC Physics
GA 501LK
UT WOS:000270383200062
ER
PT J
AU Subedi, A
Singh, DJ
AF Subedi, Alaska
Singh, David J.
TI Electron-phonon superconductivity in noncentrosymmetric LaNiC2:
First-principles calculations
SO PHYSICAL REVIEW B
LA English
DT Article
DE ab initio calculations; electron-phonon interactions; lanthanum
compounds; nickel compounds; specific heat; superconducting energy gap;
superconducting materials
ID MAGNETIC-PROPERTIES; CARBIDES
AB We report first-principles calculations of the electronic structure and electron-phonon coupling in the noncentrosymmetric superconductor LaNiC2. These show that the material is a conventional electron-phonon superconductor with intermediate coupling. There are large contributions to the coupling by two low-frequency C nonbond-stretching modes, one of which has strong Kohn anomalies. Since LaNiC2 lacks inversion symmetry, the pairing is of dominant s-wave type with some mixture of p-wave character. This will give exponential decay in the specific heat.
C1 [Subedi, Alaska] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Subedi, Alaska; Singh, David J.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Subedi, A (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
RI Singh, David/I-2416-2012
FU Department of Energy; Division of Materials Sciences and Engineering
FX We are grateful for helpful discussions with Lijun Zhang and support
from the Department of Energy, Division of Materials Sciences and
Engineering.
NR 26
TC 18
Z9 18
U1 3
U2 11
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 9
AR 092506
DI 10.1103/PhysRevB.80.092506
PG 4
WC Physics, Condensed Matter
SC Physics
GA 501LI
UT WOS:000270383000020
ER
PT J
AU Thomas, JC
Millunchick, JM
Modine, NA
Van der Ven, A
AF Thomas, John C.
Millunchick, Joanna Mirecki
Modine, Normand A.
Van der Ven, Anton
TI Surface atomic order of compound III-V semiconductor alloys at finite
temperature
SO PHYSICAL REVIEW B
LA English
DT Article
ID TRANSMISSION ELECTRON-MICROSCOPY; SCANNING-TUNNELING-MICROSCOPY; INGAAS
ALLOYS; THIN-FILMS; SEGREGATION; EPITAXY; SYSTEMS; RECONSTRUCTIONS;
MICROSTRUCTURE; THERMODYNAMICS
AB We investigate the role of alloying, atomic-size mismatch strain, and thermal effects on ordering and reconstruction stability of As-rich (2 x 4) surfaces on (In(x)Ga(1-x)) As (001) ternary III-V alloys (in the dilute limit) using a first-principles cluster-expansion and Monte Carlo simulations. The cluster expansion accounts for configurational degrees of freedom associated with As dimer adsorption/desorption as well as Ga-In disorder in subsurface cation sites. We analyze the alpha 2(2 x 4)-beta 2(2 x 4) transition at finite temperature and directly examine the entropy and cation-site filling in both reconstructions. A compositionally dependent "zigzag" ordering of dimers in the alpha 2(2 x 4) is predicted as well as a hybrid alpha 2(2 x 4)-beta 2(2 x 4) reconstruction, found to be stable in a reasonably large chemical-potential range. The hybrid dimer ordering drives pronounced nanoscale composition modulation of surface cations.
C1 [Thomas, John C.; Millunchick, Joanna Mirecki; Van der Ven, Anton] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA.
[Modine, Normand A.] Sandia Natl Labs, Ctr Integrated Nanotechnol, Albuquerque, NM 87185 USA.
RP Thomas, JC (reprint author), Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA.
EM avdv@umich.edu
OI Thomas, John/0000-0002-3162-0152
FU DOE/BES [ER 46172]; US Department of Energy; Center for Integrated
Nanotechnologies; Los Alamos National Laboratory [DE-AC52-06NA25396];
Sandia National Laboratories [DE-AC04-94AL85000]
FX We gratefully acknowledge support from DOE/BES (Grant No. ER 46172).
This work was performed in part at the US Department of Energy, Center
for Integrated Nanotechnologies, at Los Alamos National Laboratory
(Contract DE-AC52-06NA25396) and Sandia National Laboratories (Contract
DE-AC04-94AL85000)
NR 41
TC 8
Z9 8
U1 1
U2 13
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 12
AR 125315
DI 10.1103/PhysRevB.80.125315
PG 12
WC Physics, Condensed Matter
SC Physics
GA 501LL
UT WOS:000270383300082
ER
PT J
AU Tian, C
Lee, CH
Xiang, HJ
Zhang, YM
Payen, C
Jobic, S
Whangbo, MH
AF Tian, Chuan
Lee, Changhoon
Xiang, Hongjun
Zhang, Yuemei
Payen, Christophe
Jobic, Stephane
Whangbo, Myung-Hwan
TI Magnetic structure and ferroelectric polarization of MnWO4 investigated
by density functional calculations and classical spin analysis
SO PHYSICAL REVIEW B
LA English
DT Article
ID ELECTRONIC-STRUCTURE CALCULATIONS; TOTAL-ENERGY CALCULATIONS; WAVE
BASIS-SET; EXCHANGE INTERACTIONS; CRYSTAL-STRUCTURE; CHAIN; BI4CU3V2O14;
SOLIDS; DIMER; OXIDE
AB The ordered magnetic states of MnWO4 at low temperatures were examined by evaluating the spin exchange interactions between the Mn2+ ions of MnWO4 on the basis of first principles density functional calculations and by performing classical spin analysis with the resulting spin exchange parameters. Our work shows that the spin exchange interactions are frustrated within each zigzag chain of Mn2+ ions along the c direction and between such chains of Mn2+ ions along the a direction. This explains the occurrence of a spiral-spin order along the c and a directions in the incommensurate magnetic state AF2, and that of a up arrow up arrow down arrow down arrow spin order along the c and a directions in the commensurate magnetic state AF1. The ferroelectric polarization of MnWO4 in the spiral-spin state AF2 was examined by performing Berry phase calculations for a model superstructure to find that the ferroelectric polarization occurs along the b direction, in agreement with experiment.
C1 [Tian, Chuan; Lee, Changhoon; Zhang, Yuemei; Whangbo, Myung-Hwan] N Carolina State Univ, Dept Chem, Raleigh, NC 27695 USA.
[Xiang, Hongjun] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Payen, Christophe; Jobic, Stephane] Univ Nantes, CNRS, Inst Mat Jean Rouxel, F-44322 Nantes, France.
RP Tian, C (reprint author), N Carolina State Univ, Dept Chem, Box 8204, Raleigh, NC 27695 USA.
RI Zhang, Yuemei/H-7370-2012; Xiang, Hongjun/I-4305-2016
OI Xiang, Hongjun/0000-0002-9396-3214
FU Office of Basic Energy Sciences, Division of Materials Sciences; U.S.
Department of Energy [DE-FG02-86ER45259]; NERSC Center
[DE-AC02-05CH11231]; HPC Center of the NCSU campus
FX The research was supported by the Office of Basic Energy Sciences,
Division of Materials Sciences, U.S. Department of Energy, under Grant
No. DE-FG02-86ER45259, and by the NERSC Center (under Contract No.
DE-AC02-05CH11231) and the HPC Center of the NCSU campus.
NR 47
TC 26
Z9 26
U1 3
U2 19
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 10
AR 104426
DI 10.1103/PhysRevB.80.104426
PG 8
WC Physics, Condensed Matter
SC Physics
GA 501LJ
UT WOS:000270383100069
ER
PT J
AU Trimarchi, G
Freeman, AJ
Zunger, A
AF Trimarchi, Giancarlo
Freeman, Arthur J.
Zunger, Alex
TI Predicting stable stoichiometries of compounds via evolutionary global
space-group optimization
SO PHYSICAL REVIEW B
LA English
DT Article
DE aluminium alloys; crystal structure; density functional theory; phase
diagrams; scandium alloys; space groups; stoichiometry
ID METALS
AB Whereas the Daltonian atom-to-atom ratios in ordinary molecules are well understood via the traditional theory of valence, the naturally occurring stoichiometries in intermetallic compounds A(p)B(q), as revealed by phase-diagram compilations, are often surprising. Even equal-valence elements A and B give rise to unequal (p,q) stoichiometries, e.g., the 1:2, 2:1, and 3:1 ratios in Al(p)Sc(q). Moreover, sometimes different stoichiometries are associated with different lattice types and hence rather different physical properties. Here, we extend the fixed-composition global space-group optimization (GSGO) approach used to predict, via density-functional calculations, fixed-composition lattice types [G. Trimarchi and A. Zunger, J. Phys.: Condens. Matter 20, 295212 (2008)] to identify simultaneously all the minimum-energy lattice types throughout the composition range. Starting from randomly selected lattice vectors, atomic positions and stoichiometries, we construct the T=0 "convex hull" of energy vs composition. Rather than repeat a set of GSGO searches over a fixed list of stoichiometries, we minimize the distance to the convex hull. This approach is far more efficient than the former one as a single evolutionary search sequence simultaneously identifies the lowest-energy structures at each composition and among these it selects those that are ground states. For Al-Sc we correctly identify the stable stoichiometries and relative structure types: AlSc(2)-B8(2), AlSc-B2, and Al(2)Sc-C15 in the N(at)=6 periodic cells, and Al(2)Sc(6)-D0(19), AlSc-B2, and Al(3)Sc-L1(0) in the N(at)=8 periodic cells. This extended evolutionary GSGO algorithm represents a step toward a fully ab initio materials synthesis, where compounds are predicted starting from sole knowledge of the chemical species of the constituents.
C1 [Trimarchi, Giancarlo; Freeman, Arthur J.] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA.
[Zunger, Alex] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Trimarchi, G (reprint author), Northwestern Univ, Dept Phys & Astron, 2145 Sheridan Rd, Evanston, IL 60208 USA.
EM alex.zunger@nrel.gov
RI Zunger, Alex/A-6733-2013; Trimarchi, Giancarlo/A-8225-2010
OI Trimarchi, Giancarlo/0000-0002-0365-3221
FU AFOSR [FA9550-07-1-0174]; DOE-SC-BES-MSED [DE-AC36-08GO2830]
FX We thank Mayeul d'Avezac for useful discussions on this subject. Work at
Northwestern University was supported by the AFOSR (Grant No.
FA9550-07-1-0174). Work at NREL funded by DOE-SC-BES-MSED through NREL
under Contract No. DE-AC36-08GO2830.
NR 20
TC 30
Z9 30
U1 3
U2 17
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 9
AR 092101
DI 10.1103/PhysRevB.80.092101
PG 4
WC Physics, Condensed Matter
SC Physics
GA 501LI
UT WOS:000270383000001
ER
PT J
AU Wang, YL
Huang, Y
Shan, L
Li, SL
Dai, PC
Ren, C
Wen, HH
AF Wang, Yong-Lei
Huang, Yan
Shan, Lei
Li, S. L.
Dai, Pengcheng
Ren, Cong
Wen, Hai-Hu
TI Annealing effect on the electron-doped superconductor Pr0.88LaCe0.12CuO4
+/-delta
SO PHYSICAL REVIEW B
LA English
DT Article
DE annealing; antiferromagnetic materials; cerium compounds; doping
profiles; fluctuations in superconductors; high-temperature
superconductors; lanthanum compounds; praseodymium compounds; reduction
(chemical); superconducting transition temperature
ID CRYSTAL NEUTRON-DIFFRACTION; TRANSPORT-PROPERTIES; SPIN CORRELATIONS;
CU-O; OXYGEN; CE; ND2-XCEXCUO4+/-DELTA; SCATTERING; SYSTEMS; PHASE
AB Using high-vacuum annealing treatment, the superconducting transition temperature T-c of the electron-doped Pr0.88LaCe0.12CuO4 +/-delta single crystals was successfully driven to a regime in which the T-c value continuously decreases with oxygen removal. This regime of oxygen-reduction process is hard to be understood according to the previous knowledge of this material. In addition, a remarkable relaxation of T-c over time was observed at room temperature, indicating that the variation in T-c is closely related to the rearrangement of oxygen in the sample. In combination with previous studies, it can be concluded that, in the whole process of oxygen reduction applied on Pr0.88LaCe0.12CuO4 +/-delta, although the strength of antiferromagnetic (fluctuation) correlations does play a role, T-c is dominated by the disorder effect of CuO2 plane either on copper sites or oxygen sites, which leads to a strong depairing effect.
C1 [Wang, Yong-Lei; Huang, Yan; Shan, Lei; Li, S. L.; Dai, Pengcheng; Ren, Cong; Wen, Hai-Hu] Chinese Acad Sci, Inst Phys, Natl Lab Superconduct, Beijing 100190, Peoples R China.
[Wang, Yong-Lei; Huang, Yan; Shan, Lei; Li, S. L.; Dai, Pengcheng; Ren, Cong; Wen, Hai-Hu] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
[Huang, Yan] Huazhong Univ Sci & Technol, Pulsed High Magnet Field Ctr, Wuhan 430074, Peoples R China.
[Li, S. L.; Dai, Pengcheng] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Dai, Pengcheng] Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA.
RP Wang, YL (reprint author), Chinese Acad Sci, Inst Phys, Natl Lab Superconduct, POB 603, Beijing 100190, Peoples R China.
EM lshan@aphy.iphy.ac.cn; hhwen@aphy.iphy.ac.cn
RI Li, Shiliang/B-9379-2009; Dai, Pengcheng /C-9171-2012; Wang,
Yong-Lei/N-7940-2013
OI Dai, Pengcheng /0000-0002-6088-3170; Wang, Yong-Lei/0000-0003-0391-7757
FU Natural Science Foundation of China; Ministry of Science and Technology
of China [2006CB601000, 2006CB921802, 2006CB921300]; Chinese Academy of
Sciences; U.S. DOE BES [DE-FG-02-05ER46202]
FX This work is supported by the Natural Science Foundation of China, the
Ministry of Science and Technology of China (973 Project Nos.
2006CB601000, 2006CB921802, and 2006CB921300), and Chinese Academy of
Sciences (Project ITSNEM). The PLCCO single-crystal growth at UT is
supported by the U.S. DOE BES under Contract No. DE-FG-02-05ER46202.
NR 36
TC 4
Z9 4
U1 1
U2 5
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9950
EI 2469-9969
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 9
AR 094513
DI 10.1103/PhysRevB.80.094513
PG 7
WC Physics, Condensed Matter
SC Physics
GA 501LI
UT WOS:000270383000083
ER
PT J
AU Wen, JS
Xu, GY
Xu, ZJ
Lin, ZW
Li, Q
Ratcliff, W
Gu, G
Tranquada, JM
AF Wen, Jinsheng
Xu, Guangyong
Xu, Zhijun
Lin, Zhi Wei
Li, Qiang
Ratcliff, W.
Gu, Genda
Tranquada, J. M.
TI Short-range incommensurate magnetic order near the superconducting phase
boundary in Fe(1+delta)Te(1-x)Sex
SO PHYSICAL REVIEW B
LA English
DT Article
ID SPIN-DENSITY-WAVE; 43 K; LAO1-XFXFEAS; SMFEASO1-XFX; COEXISTENCE;
COMPOUND; DIAGRAM
AB We performed elastic neutron-scattering and magnetization measurements on Fe1.07Te0.75Se0.25 and FeTe0.7Se0.3. Short-range incommensurate magnetic order is observed in both samples. In the former sample with higher Fe content, a broad magnetic peak appears around (0.46,0,0.5) at low temperature, while in FeTe0.7Se0.3, the broad magnetic peak is found to be closer to the antiferromagnetic (AFM) wave vector (0.5,0,0.5). The incommensurate peaks are only observed on one side of the AFM wave vector for both samples, which can be modeled in terms of an imbalance of ferromagnetic/antiferromagnetic correlations between nearest-neighbor spins. We also find that with higher Se (and lower Fe) concentration, the magnetic order becomes weaker while the superconducting temperature and volume increase.
C1 [Wen, Jinsheng; Xu, Guangyong; Xu, Zhijun; Lin, Zhi Wei; Li, Qiang; Gu, Genda; Tranquada, J. M.] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA.
[Wen, Jinsheng] SUNY Stony Brook, Dept Mat Sci & Engn, Stony Brook, NY 11794 USA.
[Xu, Zhijun] CUNY City Coll, Dept Phys, New York, NY 10031 USA.
[Ratcliff, W.] Natl Inst Stand & Technol, NIST Ctr Neutron Res, Gaithersburg, MD 20899 USA.
RP Wen, JS (reprint author), Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA.
RI Tranquada, John/A-9832-2009; Wen, Jinsheng/F-4209-2010; Xu,
Guangyong/A-8707-2010; xu, zhijun/A-3264-2013
OI Tranquada, John/0000-0003-4984-8857; Wen, Jinsheng/0000-0001-5864-1466;
Xu, Guangyong/0000-0003-1441-8275; xu, zhijun/0000-0001-7486-2015
FU Office of Science, U.S. Department of Energy [DE-AC02-98CH10886]
FX The work at Brookhaven National Laboratory was supported by the Office
of Science, U.S. Department of Energy, under Contract No.
DE-AC02-98CH10886.
NR 39
TC 43
Z9 43
U1 0
U2 8
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 10
AR 104506
DI 10.1103/PhysRevB.80.104506
PG 4
WC Physics, Condensed Matter
SC Physics
GA 501LJ
UT WOS:000270383100089
ER
PT J
AU Williams, TJ
Aczel, AA
Baggio-Saitovitch, E
Bud'ko, SL
Canfield, PC
Carlo, JP
Goko, T
Munevar, J
Ni, N
Uemura, YJ
Yu, W
Luke, GM
AF Williams, T. J.
Aczel, A. A.
Baggio-Saitovitch, E.
Bud'ko, S. L.
Canfield, P. C.
Carlo, J. P.
Goko, T.
Munevar, J.
Ni, N.
Uemura, Y. J.
Yu, W.
Luke, G. M.
TI Muon spin rotation measurement of the magnetic field penetration depth
in Ba(Fe0.926Co0.074)(2)As-2: Evidence for multiple superconducting gaps
SO PHYSICAL REVIEW B
LA English
DT Article
DE barium compounds; cobalt compounds; flux-line lattice; Fourier
transforms; Ginzburg-Landau theory; high-temperature superconductors;
iron compounds; muon probes; penetration depth (superconductivity);
superconducting energy gap
ID VORTEX CORES; EXCITATIONS
AB We have performed transverse field muon spin rotation measurements of single crystals of Ba(Fe0.926Co0.074)(2)As-2 with the applied magnetic field along the c direction. Fourier transforms of the measured spectra reveal an anisotropic line-shape characteristic of an Abrikosov vortex lattice. We have fit the mu SR spectra to a microscopic model in terms of the penetration depth lambda and the Ginzburg-Landau parameter kappa. We find that as a function of temperature, the penetration depth varies more rapidly than in standard weak-coupled BCS theory. For this reason we first fit the temperature dependence to a power law where the power varies from 1.6 to 2.2 as the field changes from 0.02 to 0.1 T. Due to the surprisingly strong field dependence of the power and the superfluid density we proceeded to fit the temperature dependence to a two-gap model, where the size of the two gaps is field independent. From this model, we obtained gaps of 2 Delta(1)=3.77k(B)T(C) and 2 Delta(2)=1.57k(B)T(C), corresponding to roughly 6 and 3 meV, respectively.
C1 [Williams, T. J.; Aczel, A. A.; Goko, T.; Luke, G. M.] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada.
[Baggio-Saitovitch, E.; Munevar, J.] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, Brazil.
[Bud'ko, S. L.; Canfield, P. C.; Ni, N.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
[Bud'ko, S. L.; Canfield, P. C.; Ni, N.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
[Carlo, J. P.; Goko, T.; Uemura, Y. J.] Columbia Univ, Dept Phys, New York, NY 10027 USA.
[Goko, T.] TRIUMF, Vancouver, BC V6T 2A3, Canada.
[Yu, W.] Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China.
[Luke, G. M.] Canadian Inst Adv Res, Toronto, ON M5G 1Z8, Canada.
RP Luke, GM (reprint author), McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada.
EM luke@mcmaster.ca
RI 石, 源/D-5929-2012; Yu, Weiqiang/E-9722-2012; ruc, phy/E-4170-2012;
Canfield, Paul/H-2698-2014; Saitovitch, Elisa/A-6769-2015; Luke,
Graeme/A-9094-2010; Aczel, Adam/A-6247-2016; Williams,
Travis/A-5061-2016;
OI Aczel, Adam/0000-0003-1964-1943; Williams, Travis/0000-0003-3212-2726;
Luke, Graeme/0000-0003-4762-1173
FU NSERC; CIFAR; NSF [DMR-0502706, DMR0806846]; Department of Energy, Basic
Energy Sciences [DE-AC02-07CH11358]; CIAM (CNPq/NSF) [492674/2004-3]
FX We thank Jeff Sonier for sharing his computer program for evaluating
vortex lattice disorder. P. C. C. and G. M. L. thank R. Prozorov for
useful discussions. We appreciate the hospitality of the TRIUMF Centre
for Molecular and Materials Science where the majority of these
experiments were performed. Research at McMaster University is supported
by NSERC and CIFAR. Work at Columbia was supported by NSF under Grants
No. DMR-0502706 and No. DMR-0806846. Work at Ames Laboratory was
supported by the Department of Energy, Basic Energy Sciences under
Contract No. DE-AC02-07CH11358. Participation of CBPF was supported by
CIAM (CNPq/NSF) 492674/2004-3.
NR 41
TC 54
Z9 54
U1 0
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 9
AR 094501
DI 10.1103/PhysRevB.80.094501
PG 5
WC Physics, Condensed Matter
SC Physics
GA 501LI
UT WOS:000270383000071
ER
PT J
AU Xiang, HJ
Wei, SH
Chen, SY
Gong, XG
AF Xiang, H. J.
Wei, Su-Huai
Chen, Shiyou
Gong, X. G.
TI Ordered ground state wurtzite alloys from zinc-blende parent compounds
SO PHYSICAL REVIEW B
LA English
DT Article
ID TOTAL-ENERGY CALCULATIONS; AUGMENTED-WAVE METHOD; 1ST-PRINCIPLES
CALCULATION; SEMICONDUCTOR ALLOYS; PHASE-DIAGRAMS; BASIS-SET;
TRANSITION; NANOWIRES; GAN; POLYTYPISM
AB The ground state structures of the A(x)B(1-x)C wurtzite (WZ) alloys with x=0.25, 0.5, and 0.75 are revealed by a ground state search using the valence-force field model and density-functional theory total-energy calculations. It is shown that the ground state WZ alloy always has a lower strain energy and formation enthalpy than the corresponding zinc-blende (ZB) alloy. Therefore, we propose that the WZ phase can be stabilized through alloying. This idea is supported by the fact that the WZ AlP0.5Sb0.5, AlP0.75Sb0.25, ZnS0.5Te0.5, and ZnS0.75Te0.25 alloys in the lowest-energy structures are more stable than the corresponding ZB alloys. In this example, the alloy adopts a structure distinct from both parent phases.
C1 [Xiang, H. J.; Wei, Su-Huai] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Chen, Shiyou; Gong, X. G.] Fudan Univ, Surface Sci Lab, Shanghai 200433, Peoples R China.
[Chen, Shiyou; Gong, X. G.] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China.
RP Xiang, HJ (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
RI gong, xingao /B-1337-2010; Xiang, Hongjun/I-4305-2016; gong,
xingao/D-6532-2011
OI Xiang, Hongjun/0000-0002-9396-3214;
FU U.S. Department of Energy [DE-AC36-08GO28308]; National Sciences
Foundation of China; Basic Research Program of MOE and Shanghai; Special
Funds; Postgraduate Innovation Fund
FX Work at NREL was supported by the U.S. Department of Energy under
Contract No. DE-AC36-08GO28308. The work in Fudan (FU) is partially
supported by the National Sciences Foundation of China, the Basic
Research Program of MOE and Shanghai, the Special Funds for Major State
Basic Research, and Postgraduate Innovation Fund of FU.
NR 35
TC 2
Z9 2
U1 4
U2 16
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 11
AR 113201
DI 10.1103/PhysRevB.80.113201
PG 4
WC Physics, Condensed Matter
SC Physics
GA 501LK
UT WOS:000270383200004
ER
PT J
AU Yu, R
Yunoki, S
Dong, S
Dagotto, E
AF Yu, Rong
Yunoki, Seiji
Dong, Shuai
Dagotto, Elbio
TI Electronic and magnetic properties of RMnO3/AMnO(3) heterostructures
SO PHYSICAL REVIEW B
LA English
DT Article
ID RECONSTRUCTION; LA1-XSRXMNO3; TRANSITION; INSULATOR; INTERFACE; LAMNO3
AB The ground-state properties of RMnO3/AMnO(3) (RMO/AMO) heterostructures (with R=La, Pr,..., a trivalent rare-earth cation and A=Sr, Ca,..., a divalent alkaline cation) are studied using a two-orbital double-exchange model including the superexchange coupling and Jahn-Teller lattice distortions. To describe the charge transfer across the interface, the long-range Coulomb interaction is taken into account at the mean-field level, by self-consistently solving the Poisson's equation. The calculations are carried out numerically on finite clusters. We find that the state stabilized near the interface of the heterostructure is similar to the state of the bulk compound (R,A)MO at electronic density close to 0.5. For instance, a charge and orbitally ordered CE state is found at the interface if the corresponding bulk (R,A)MO material is a narrow-to-intermediate bandwidth manganite. But instead the interface regime accommodates an A-type antiferromagnetic state with a uniform x(2) - y(2) orbital order, if the bulk (R,A)MO corresponds to a wide bandwidth manganite. We argue that these results explain some of the properties of long-period (RMO)(m)/(AMO)(n) superlattices, such as (PrMnO3)(m)/(CaMnO3)(n) and (LaMnO3)(m)/(SrMnO3)(n). We also remark that the intermediate states in between the actual interface and the bulklike regimes of the heterostructure are dependent on the bandwidth and the screening of the Coulomb interaction. In these regions of the heterostructures, states are found that do not have an analog in experimentally known bulk phase diagrams. These new states of the heterostructures provide a natural interpolation between magnetically ordered states that are stable in the bulk at different electronic densities.
C1 [Yu, Rong; Dong, Shuai; Dagotto, Elbio] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Yu, Rong; Dong, Shuai; Dagotto, Elbio] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Yunoki, Seiji] RIKEN, Computat Condensed Matter Phys Lab, Wako, Saitama 3510198, Japan.
[Yunoki, Seiji] Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3320012, Japan.
[Dong, Shuai] Nanjing Univ, Nanjing Natl Lab Microstruct, Nanjing 210093, Peoples R China.
RP Yu, R (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
RI YU, RONG/C-1506-2012; Yunoki, Seiji/B-1831-2008; Yu, Rong/K-5854-2012;
Dong (董), Shuai (帅)/A-5513-2008; Yu, Rong/H-3355-2016
OI Dong (董), Shuai (帅)/0000-0002-6910-6319;
FU NSF [DMR-0706020]; Division of Materials Science and Engineering; U.S.
DOE; CREST (JST)
FX We thank L. Brey, M. Daghofer, D. Khomskii, C. Lin, S. May, S. Okamoto,
J. Salafranca, and Y. Tokura for useful discussions. This work was
supported by the NSF under Grant No. DMR-0706020 and the Division of
Materials Science and Engineering, U.S. DOE under contract with
UTBattelle, LLC. S. Y. is also supported in part by CREST (JST)
NR 40
TC 21
Z9 22
U1 0
U2 31
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 12
AR 125115
DI 10.1103/PhysRevB.80.125115
PG 11
WC Physics, Condensed Matter
SC Physics
GA 501LL
UT WOS:000270383300036
ER
PT J
AU Zhou, SY
Girit, CO
Scholl, A
Jozwiak, CJ
Siegel, DA
Yu, P
Robinson, JT
Wang, F
Zettl, A
Lanzara, A
AF Zhou, S. Y.
Girit, C. Oe.
Scholl, A.
Jozwiak, C. J.
Siegel, D. A.
Yu, P.
Robinson, J. T.
Wang, F.
Zettl, A.
Lanzara, A.
TI Instability of two-dimensional graphene: Breaking sp(2) bonds with soft
x rays
SO PHYSICAL REVIEW B
LA English
DT Article
ID RAMAN-SPECTROSCOPY; FINE-STRUCTURE; GRAPHITE; MICROSCOPY; DISORDER;
SYSTEMS; CARBON; DAMAGE
AB We study the stability of various kinds of graphene samples under soft x-ray irradiation. Our results show that in single-layer exfoliated graphene (a closer analog to two-dimensional material), the in-plane carbon-carbon bonds are unstable under x-ray irradiation, resulting in nanocrystalline structures. As the interaction along the third dimension increases by increasing the number of graphene layers or through the interaction with the substrate (epitaxial graphene), the effect of x-ray irradiation decreases and eventually becomes negligible for graphite and epitaxial graphene. Our results demonstrate the importance of the interaction along the third dimension in stabilizing the long range in-plane carbon-carbon bonding, and suggest the possibility of using x-ray to pattern graphene nanostructures in exfoliated graphene.
C1 [Zhou, S. Y.; Girit, C. Oe.; Jozwiak, C. J.; Siegel, D. A.; Yu, P.; Wang, F.; Zettl, A.; Lanzara, A.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Zhou, S. Y.; Girit, C. Oe.; Jozwiak, C. J.; Siegel, D. A.; Robinson, J. T.; Zettl, A.; Lanzara, A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Scholl, A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Robinson, J. T.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
RP Zhou, SY (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
RI Zhou, Shuyun/A-5750-2009; Zettl, Alex/O-4925-2016; Robinson,
Jeremy/F-2748-2010; wang, Feng/I-5727-2015; Girit, Caglar/D-4845-2014;
Yu, Pu/F-1594-2014; Scholl, Andreas/K-4876-2012
OI Zettl, Alex/0000-0001-6330-136X; Girit, Caglar/0000-0001-8953-9261;
FU Division of Materials Sciences and Engineering; Office of Basic Energy
Sciences of the U. S. Deparment of Energy [DE-AC03-76SF00098]; DOE
[DE-AC02-05CH11231]
FX We thank D.-H. Lee, A. K. Geim, and A. C. Ferrari for useful
discussions. The photoemission and Raman measurements were supported by
the Division of Materials Sciences and Engineering, Office of Basic
Energy Sciences of the U. S. Deparment of Energy under Contract No.
DE-AC03-76SF00098. A.Z. and C.O.G. acknowledge the DOE (Grant No.
DE-AC02-05CH11231) for sample preparation and Raman characterization.
NR 28
TC 26
Z9 26
U1 0
U2 22
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 12
AR 121409
DI 10.1103/PhysRevB.80.121409
PG 4
WC Physics, Condensed Matter
SC Physics
GA 501LL
UT WOS:000270383300021
ER
PT J
AU Zhou, SQ
Potzger, K
Xu, QY
Kuepper, K
Talut, G
Marko, D
Mucklich, A
Helm, M
Fassbender, J
Arenholz, E
Schmidt, H
AF Zhou, Shengqiang
Potzger, K.
Xu, Qingyu
Kuepper, K.
Talut, G.
Marko, D.
Muecklich, A.
Helm, M.
Fassbender, J.
Arenholz, E.
Schmidt, H.
TI Spinel ferrite nanocrystals embedded inside ZnO: Magnetic, electronic,
and magnetotransport properties
SO PHYSICAL REVIEW B
LA English
DT Article
DE annealing; cobalt compounds; coercive force; ferrites; Hall effect;
II-VI semiconductors; interface magnetism; ion implantation; magnetic
particles; magnetoresistance; nanoparticles; nanostructured materials;
nickel compounds; semiconductor-insulator boundaries; wide band gap
semiconductors; zinc compounds
ID X-RAY-ABSORPTION; CIRCULAR-DICHROISM; ZINC FERRITE; THIN-FILMS; NIFE2O4;
NANOPARTICLES; FE; MAGNETORESISTANCE; IMPLANTATION; SPECTROSCOPY
AB In this paper we show that spinel ferrite nanocrystals (NiFe2O4, and CoFe2O4) can be texturally embedded inside a ZnO matrix by ion implantation and postannealing. The two kinds of ferrites show different magnetic properties, e.g., coercivity and magnetization. Anomalous Hall effect and positive magnetoresistance have been observed. Our study suggests a ferrimagnet/semiconductor hybrid system for potential applications in magnetoelectronics. This hybrid system can be tuned by selecting different transition-metal ions (from Mn to Zn) to obtain various magnetic and electronic properties.
C1 [Zhou, Shengqiang; Potzger, K.; Kuepper, K.; Talut, G.; Marko, D.; Muecklich, A.; Helm, M.; Fassbender, J.; Schmidt, H.] Forschungszentrum Dresden Rossendorf, Inst Ion Beam Phys & Mat Res, D-01314 Dresden, Germany.
[Xu, Qingyu] Southeast Univ, Dept Phys, Nanjing 211189, Peoples R China.
[Arenholz, E.] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
RP Zhou, SQ (reprint author), Forschungszentrum Dresden Rossendorf, Inst Ion Beam Phys & Mat Res, POB 510119, D-01314 Dresden, Germany.
EM s.zhou@fzd.de
RI Marko, Daniel/D-4710-2011; Fassbender, Juergen/A-8664-2008; Helm,
Manfred/B-2284-2009; Zhou, Shengqiang/C-1497-2009; Kupper,
Karsten/G-1397-2016; Schmidt, Heidemarie/E-4627-2012
OI Fassbender, Juergen/0000-0003-3893-9630; Zhou,
Shengqiang/0000-0002-4885-799X;
FU Bundesministerium fur Bildung und Forschung [FKZ03N8708]; National
Natural Science Foundation of China [50802041]; National Key Projects
for Basic Research of China [2010CB923404]; Office of Science, Office of
Basic Energy Sciences, of the U. S. Department of Energy
[DE-AC0205CH11231]
FX The authors (S. Z., Q. X., and H. S.) gratefully acknowledge financial
funding from the Bundesministerium fur Bildung und Forschung
(FKZ03N8708). Q. X. is supported by the National Natural Science
Foundation of China (Grant No. 50802041) and by the National Key
Projects for Basic Research of China (Grant No. 2010CB923404). The
Advanced Light Source is supported by the Director, Office of Science,
Office of Basic Energy Sciences, of the U. S. Department of Energy under
Contract No. DE-AC0205CH11231.
NR 70
TC 19
Z9 20
U1 2
U2 28
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-0121
J9 PHYS REV B
JI Phys. Rev. B
PD SEP
PY 2009
VL 80
IS 9
AR 094409
DI 10.1103/PhysRevB.80.094409
PG 12
WC Physics, Condensed Matter
SC Physics
GA 501LI
UT WOS:000270383000055
ER
PT J
AU Apollonio, M
Artamonov, A
Bagulya, A
Barr, G
Blondel, A
Bobisut, F
Bogomilov, M
Bonesini, M
Booth, C
Borghi, S
Bunyatov, S
Burguet-Castell, J
Catanesi, MG
Cervera-Villanueva, A
Chimenti, P
Coney, L
Di Capua, E
Dore, U
Dumarchez, J
Edgecock, R
Ellis, M
Ferri, F
Gastaldi, U
Giani, S
Giannini, G
Gibin, D
Gilardoni, S
Gorbunov, P
Gossling, C
Gomez-Cadenas, JJ
Grant, A
Graulich, JS
Gregoire, G
Grichine, V
Grossheim, A
Guglielmi, A
Howlett, L
Ivanchenko, A
Ivanchenko, V
Kayis-Topaksu, A
Kirsanov, M
Kolev, D
Krasnoperov, A
Martin-Albo, J
Meurer, C
Mezzetto, M
Mills, GB
Morone, MC
Novella, P
Orestano, D
Palladino, V
Panman, J
Papadopoulos, I
Pastore, F
Piperov, S
Polukhina, N
Popov, B
Prior, G
Radicioni, E
Schmitz, D
Schroeter, R
Serdiouk, V
Skoro, G
Sorel, M
Tcherniaev, E
Temnikov, P
Tereschenko, V
Tonazzo, A
Tortora, L
Tsenov, R
Tsukerman, I
Vidal-Sitjes, G
Wiebusch, C
Zucchelli, P
AF Apollonio, M.
Artamonov, A.
Bagulya, A.
Barr, G.
Blondel, A.
Bobisut, F.
Bogomilov, M.
Bonesini, M.
Booth, C.
Borghi, S.
Bunyatov, S.
Burguet-Castell, J.
Catanesi, M. G.
Cervera-Villanueva, A.
Chimenti, P.
Coney, L.
Di Capua, E.
Dore, U.
Dumarchez, J.
Edgecock, R.
Ellis, M.
Ferri, F.
Gastaldi, U.
Giani, S.
Giannini, G.
Gibin, D.
Gilardoni, S.
Gorbunov, P.
Goessling, C.
Gomez-Cadenas, J. J.
Grant, A.
Graulich, J. S.
Gregoire, G.
Grichine, V.
Grossheim, A.
Guglielmi, A.
Howlett, L.
Ivanchenko, A.
Ivanchenko, V.
Kayis-Topaksu, A.
Kirsanov, M.
Kolev, D.
Krasnoperov, A.
Martin-Albo, J.
Meurer, C.
Mezzetto, M.
Mills, G. B.
Morone, M. C.
Novella, P.
Orestano, D.
Palladino, V.
Panman, J.
Papadopoulos, I.
Pastore, F.
Piperov, S.
Polukhina, N.
Popov, B.
Prior, G.
Radicioni, E.
Schmitz, D.
Schroeter, R.
Serdiouk, V.
Skoro, G.
Sorel, M.
Tcherniaev, E.
Temnikov, P.
Tereschenko, V.
Tonazzo, A.
Tortora, L.
Tsenov, R.
Tsukerman, I.
Vidal-Sitjes, G.
Wiebusch, C.
Zucchelli, P.
CA HARP Collaboration
TI Forward production of charged pions with incident protons on nuclear
targets at the CERN Proton Synchrotron
SO PHYSICAL REVIEW C
LA English
DT Article
ID 450 GEV/C PROTONS; PRODUCTION CROSS-SECTIONS; PARTICLE PRODUCTION;
POSITIVE PIONS; BERYLLIUM; COLLISIONS; PI(+/-); TRACK; HARP; DETECTOR
AB Measurements of the double-differential pi(+/-) production cross section in the range of momentum 0.5 <= p <= 8.0 GeV/c and angle 0.025 <= theta <= 0.25 rad in collisions of protons on beryllium, carbon, nitrogen, oxygen, aluminum, copper, tin, tantalum, and lead are presented. The data were taken with the large-acceptance HAdRon Production (HARP) detector in the T9 beamline of the CERN Proton Synchrotron. Incident particles were identified by an elaborate system of beam detectors. Thin targets of 5% of a nuclear interaction length were used. The tracking and identification of the produced particles were performed using the forward system of the HARP experiment. Results are obtained for the double-differential cross sections d(2)sigma s/dp d Omega mainly at four incident proton beam momenta (3, 5, 8, and 12 GeV/c). Measurements are compared with the GEANT4 and MARS Monte Carlo generators. A global paametrization is provided as an approximation of all the collected datasets, which can serve as a tool for quick yield estimates.
C1 [Bonesini, M.; Ferri, F.] Sez INFN Milano Bicocca, Milan, Italy.
[Apollonio, M.; Chimenti, P.; Giannini, G.] Univ & Sez INFN, Trieste, Italy.
[Artamonov, A.; Giani, S.; Gilardoni, S.; Gorbunov, P.; Grant, A.; Grossheim, A.; Ivanchenko, A.; Ivanchenko, V.; Kayis-Topaksu, A.; Panman, J.; Papadopoulos, I.; Tcherniaev, E.; Tsukerman, I.; Wiebusch, C.; Zucchelli, P.] CERN, Geneva, Switzerland.
[Bagulya, A.; Grichine, V.; Polukhina, N.] Russian Acad Sci, PN Lebedev Inst Phys FIAN, Moscow, Russia.
[Barr, G.] Univ Oxford, Nucl & Astrophys Lab, Oxford OX1 2JD, England.
[Blondel, A.; Borghi, S.; Morone, M. C.; Prior, G.; Schroeter, R.] Univ Geneva, Sect Phys, CH-1211 Geneva 4, Switzerland.
[Bobisut, F.; Gibin, D.; Guglielmi, A.; Mezzetto, M.] Sezione Ist Nazl Fis Nucl, Padua, Italy.
[Bobisut, F.; Gibin, D.] Univ Padua, Padua, Italy.
[Bogomilov, M.; Kolev, D.; Tsenov, R.] St Kliment Ohridski Univ, Fac Phys, Sofia, Bulgaria.
[Booth, C.; Howlett, L.; Skoro, G.] Univ Sheffield, Dept Phys, Sheffield S10 2TN, S Yorkshire, England.
[Bunyatov, S.; Krasnoperov, A.; Popov, B.; Serdiouk, V.; Tereschenko, V.] Joint Inst Nucl Res, Dubna, Russia.
[Burguet-Castell, J.; Cervera-Villanueva, A.; Gomez-Cadenas, J. J.; Martin-Albo, J.; Novella, P.; Sorel, M.] CSIC, Inst Fis Corpuscular, IFIC, Madrid, Spain.
[Burguet-Castell, J.; Cervera-Villanueva, A.; Gomez-Cadenas, J. J.; Martin-Albo, J.; Novella, P.; Sorel, M.] Univ Valencia, E-46003 Valencia, Spain.
[Catanesi, M. G.; Radicioni, E.] Sezione Ist Nazl Fis Nucl, Bari, Italy.
[Coney, L.; Schmitz, D.] Columbia Univ, New York, NY USA.
[Di Capua, E.; Vidal-Sitjes, G.] Univ & Sez INFN, Ferrara, Italy.
[Dore, U.] Univ Roma La Sapienza, Rome, Italy.
[Dore, U.] Sez INFN Roma I, Rome, Italy.
[Dumarchez, J.] Univ Paris 06, LPNHE, Paris, France.
[Dumarchez, J.] Univ Paris 07, LPNHE, Paris, France.
[Edgecock, R.; Ellis, M.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
[Gastaldi, U.] Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy.
[Goessling, C.] Univ Dortmund, Inst Phys, D-44221 Dortmund, Germany.
[Graulich, J. S.; Gregoire, G.] UCL, Inst Phys Nucl, Louvain, Belgium.
[Kirsanov, M.] Russian Acad Sci, Inst Nucl Res, Moscow, Russia.
[Meurer, C.] Forschungszentrum Karlsruhe, Inst Phys, Karlsruhe, Germany.
[Mills, G. B.] Los Alamos Natl Lab, Los Alamos, NM USA.
[Orestano, D.; Pastore, F.; Tonazzo, A.; Tortora, L.] Sezione Ist Nazl Fis Nucl, Rome, Italy.
[Orestano, D.; Pastore, F.; Tonazzo, A.] Univ Roma Tre, Rome, Italy.
[Palladino, V.] Univ Naples Federico 2, Naples, Italy.
[Palladino, V.] Sezione Ist Nazl Fis Nucl, Naples, Italy.
[Piperov, S.; Temnikov, P.] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, Sofia, Bulgaria.
RP Bonesini, M (reprint author), Sez INFN Milano Bicocca, Milan, Italy.
EM maurizio.bonesini@mib.infn.it
RI Booth, Christopher/B-5263-2016; Skoro, Goran/F-3642-2010; Chimenti,
Pietro/F-9898-2012; Polukhina, Natalia/E-1610-2014; Wiebusch,
Christopher/G-6490-2012; Prior, Gersende/I-8191-2013; Bagulya,
Alexander/D-4273-2014; Grichine, Vladimir/M-8526-2015; Tcherniaev,
Evgueni/G-3453-2016; Morone, Maria Cristina/P-4407-2016; Temnikov,
Petar/L-6999-2016; Novella, Pau/K-2845-2014; Gomez Cadenas, Juan
Jose/L-2003-2014; Skoro, Goran/P-1229-2014
OI Bonesini, Maurizio/0000-0001-5119-1896; Prior,
Gersende/0000-0002-6058-1420; Booth, Christopher/0000-0002-6051-2847;
Chimenti, Pietro/0000-0002-9755-5066; Wiebusch,
Christopher/0000-0002-6418-3008; Tcherniaev,
Evgueni/0000-0002-3685-0635; Morone, Maria Cristina/0000-0002-0200-0632;
Temnikov, Petar/0000-0002-9559-3384; Novella, Pau/0000-0002-0923-3172;
Gomez Cadenas, Juan Jose/0000-0002-8224-7714; Skoro,
Goran/0000-0001-7745-9045
FU Institut Interuniversitaire des Sciences Nucleaires; Interuniversitair
Instituut voor Kernwetenschappen (Belgium); Ministerio de Educacion y
Ciencia [FPA2003-06921-c02-02]; Generalitat Valenciana [GV00-054-1];
CERN (Geneva, Switzerland); German Bundesministerium fur Bidung und
Forschung (Germany); Istituto Nazionale di Fisica Nucleare (Italy), INR
RAS (Moscow); Russian Foundation for Basic Research [08-02-00018];
Particle Physics and Astronomy Research Council (UK)
FX We gratefully acknowledge the help and support of the PS beam staff and
of the numerous technical collaborators who contributed to the detector
design, construction, commissioning, and operation. In particular, we
would like to thank G. Barichello, R. Brocard, K. Burin, V. Carassiti,
F. Chignoli, D. Conventi, G. Decreuse, M. Delattre, C. Detraz, A.
Domeniconi, M. Dwuznik, F. Evangelisti, B. Friend, A. Iaciofano, I.
Krasin, D. Lacroix, J.-C. Legrand, M. Lobello, M. Lollo, J. Loquet, F.
Marinilli, R. Mazza, J. Mulon, L. Musa, R. Nicholson, A. Pepato, P.
Petev, X. Pons, I. Rusinov, M. Scandurra, E. Usenko, and R. van der
Vlugt for their support in the construction of the detector and P. Dini
for his contribution to Monte Carlo production. The collaboration also
acknowledges the major contributions and advice of M. Baldo-Ceolin, L.
Linssen, M. T. Muciaccia, and A. Pullia during the construction of the
experiment. The collaboration is indebted to V. Ableev, F. Bergsma, P.
Binko, E. Boter, M. Calvi, C. Cavion, M. Chizov, A. Chukanov, A.
DeSanto, A. DeMin, M. Doucet, D. Dullmann, V. Ermilova, W. Flegel, Y.
Hayato, A. Ichikawa, O. Klimov, T. Kobayashi, D. Kustov, M. Laveder, M.
Mass, H. Meinhard, A. Menegolli, T. Nakaya, K. Nishikawa, M. Paganoni,
F. Paleari, M. Pasquali, M. Placentino, V. Serdiouk, S. Simone, P. J.
Soler, S. Troquereau, S. Ueda, A. Valassi, and R. Veenhof for their
contributions to the experiment. We also acknowledge the contributions
of V. Ammosov, G. Chelkov, D. Dedovich, F. Dydak, M. Gostkin, A. Guskov,
D. Khartchenko, V. Koreshev, Z. Kroumchtein, I. Nefedov, A. Semak, J.
Wotschack, V. Zaets, and A. Zhemchugov to the work described in this
paper. The experiment was made possible by grants from the Institut
Interuniversitaire des Sciences Nucleaires and the Interuniversitair
Instituut voor Kernwetenschappen (Belgium), Ministerio de Educacion y
Ciencia, Grant FPA2003-06921-c02-02, and Generalitat Valenciana, Grant
GV00-054-1, CERN (Geneva, Switzerland), the German Bundesministerium fur
Bidung und Forschung (Germany), the Istituto Nazionale di Fisica
Nucleare (Italy), INR RAS (Moscow), the Russian Foundation for Basic
Research (Grant 08-02-00018), and the Particle Physics and Astronomy
Research Council (UK). We gratefully acknowledge their support.
NR 67
TC 14
Z9 14
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD SEP
PY 2009
VL 80
IS 3
AR 035208
DI 10.1103/PhysRevC.80.035208
PG 19
WC Physics, Nuclear
SC Physics
GA 501LO
UT WOS:000270383600079
ER
PT J
AU Argyriades, J
Arnold, R
Augier, C
Baker, J
Barabash, AS
Basharina-Freshville, A
Bongrand, M
Broudin, G
Brudanin, V
Caffrey, AJ
Chauveau, E
Daraktchieva, Z
Durand, D
Egorov, V
Fatemi-Ghomi, N
Flack, R
Hubert, P
Jerie, J
Jullian, S
Kauer, M
King, S
Klimenko, A
Kochetov, O
Konovalov, SI
Kovalenko, V
Lalanne, D
Lamhamdi, T
Lang, K
Lemiere, Y
Longuemare, C
Lutter, G
Marquet, C
Martin-Albo, J
Mauger, F
Nachab, A
Nasteva, I
Nemchenok, I
Nova, F
Novella, P
Ohsumi, H
Pahlka, RB
Perrot, F
Piquemal, F
Reyss, JL
Ricol, JS
Saakyan, R
Sarazin, X
Simard, L
Simkovic, F
Shitov, Y
Smolnikov, A
Snow, S
Soldner-Rembold, S
Stekl, I
Suhonen, J
Sutton, CS
Szklarz, G
Thomas, J
Timkin, V
Tretyak, V
Umatov, V
Vala, L
Vanyushin, I
Vasiliev, V
Vorobel, V
Vylov, T
AF Argyriades, J.
Arnold, R.
Augier, C.
Baker, J.
Barabash, A. S.
Basharina-Freshville, A.
Bongrand, M.
Broudin, G.
Brudanin, V.
Caffrey, A. J.
Chauveau, E.
Daraktchieva, Z.
Durand, D.
Egorov, V.
Fatemi-Ghomi, N.
Flack, R.
Hubert, Ph.
Jerie, J.
Jullian, S.
Kauer, M.
King, S.
Klimenko, A.
Kochetov, O.
Konovalov, S. I.
Kovalenko, V.
Lalanne, D.
Lamhamdi, T.
Lang, K.
Lemiere, Y.
Longuemare, C.
Lutter, G.
Marquet, Ch.
Martin-Albo, J.
Mauger, F.
Nachab, A.
Nasteva, I.
Nemchenok, I.
Nova, F.
Novella, P.
Ohsumi, H.
Pahlka, R. B.
Perrot, F.
Piquemal, F.
Reyss, J. L.
Ricol, J. S.
Saakyan, R.
Sarazin, X.
Simard, L.
Simkovic, F.
Shitov, Yu.
Smolnikov, A.
Snow, S.
Soeldner-Rembold, S.
Stekl, I.
Suhonen, J.
Sutton, C. S.
Szklarz, G.
Thomas, J.
Timkin, V.
Tretyak, V.
Umatov, V.
Vala, L.
Vanyushin, I.
Vasiliev, V.
Vorobel, V.
Vylov, Ts.
CA NEMO Collaboration
TI Measurement of the double-beta decay half-life of Nd-150 and search for
neutrinoless decay modes with the NEMO-3 detector
SO PHYSICAL REVIEW C
LA English
DT Article
ID NUCLEAR-MATRIX ELEMENTS; EXCITED-STATES; MAJORON; MO-100
AB The half-life for double-beta decay of Nd-150 has been measured by the NEMO-3 experiment at the Modane Underground Laboratory. Using 924.7 days of data recorded with 36.55 g of Nd-150, we measured the half-life for 2 nu beta beta decay to be T-1/2(2 nu) = (9.11(-0.22)(+0.25)(stat.) +/- 0.63(syst.)) x 10(18) yr. The observed limit on the half-life for neutrinoless double-beta decay is found to be T-1/2(0 nu) > 1.8 x 10(22) yr at 90% confidence level. This translates into a limit on the effective Majorana neutrino mass of < m(nu)> < 4.0-6.3 eV if the nuclear deformation is taken into account. We also set limits on models involving Majoron emission, right-handed currents, and transitions to excited states.
C1 [Argyriades, J.; Augier, C.; Bongrand, M.; Jullian, S.; Lalanne, D.; Sarazin, X.; Simard, L.; Szklarz, G.] Univ Paris 11, LAL, CNRS, IN2P3, Orsay, France.
[Arnold, R.] Univ Strasbourg, CNRS, IN2P3, IPHC, F-67037 Strasbourg, France.
[Baker, J.; Caffrey, A. J.] INL, Idaho Falls, ID 83415 USA.
[Barabash, A. S.; Konovalov, S. I.; Umatov, V.; Vanyushin, I.] Inst Theoret & Expt Phys, RU-117259 Moscow, Russia.
[Basharina-Freshville, A.; Daraktchieva, Z.; Flack, R.; Kauer, M.; King, S.; Saakyan, R.; Thomas, J.; Vasiliev, V.] UCL, London WC1E 6BT, England.
[Broudin, G.; Chauveau, E.; Hubert, Ph.; Lutter, G.; Marquet, Ch.; Nachab, A.; Perrot, F.; Piquemal, F.; Ricol, J. S.] Univ Bordeaux, Ctr Etud Nucl Bordeaux Gradignan, UMR 5797, F-33175 Gradignan, France.
[Broudin, G.; Chauveau, E.; Hubert, Ph.; Lutter, G.; Marquet, Ch.; Nachab, A.; Perrot, F.; Piquemal, F.; Ricol, J. S.] Ctr Etud Nucl Bordeaux Gradignan, UMR 5797, CNRS, IN2P3, F-33175 Gradignan, France.
[Brudanin, V.; Egorov, V.; Klimenko, A.; Kochetov, O.; Kovalenko, V.; Nemchenok, I.; Shitov, Yu.; Smolnikov, A.; Timkin, V.; Tretyak, V.; Vylov, Ts.] Joint Inst Nucl Res, RU-141980 Dubna, Russia.
[Durand, D.; Lemiere, Y.; Longuemare, C.; Mauger, F.] Univ Caen, ENSICAEN, LPC Caen, F-14032 Caen, France.
[Fatemi-Ghomi, N.; Nasteva, I.; Snow, S.; Soeldner-Rembold, S.] Univ Manchester, Manchester M13 9PL, Lancs, England.
[Lamhamdi, T.] USMBA, Fes, Morocco.
[Lang, K.; Pahlka, R. B.] Univ Texas Austin, Austin, TX 78712 USA.
[Jerie, J.; Stekl, I.; Vala, L.] Czech Tech Univ, IEAP, CZ-12800 Prague, Czech Republic.
[Martin-Albo, J.; Novella, P.] Univ Valencia, CSIC, IFIC, Valencia, Spain.
[Nova, F.] Univ Autonoma Barcelona, Barcelona, Spain.
[Ohsumi, H.] Saga Univ, Saga 8408502, Japan.
[Reyss, J. L.] CNRS, LSCE, F-91190 Gif Sur Yvette, France.
[Simkovic, F.] Comenius Univ, FMFI, SK-84248 Bratislava, Slovakia.
[Suhonen, J.] Univ Jyvaskyla, FIN-40351 Jyvaskyla, Finland.
[Sutton, C. S.] Mt Holyoke Coll, S Hadley, MA 01075 USA.
[Vorobel, V.] Charles Univ Prague, Prague, Czech Republic.
RP Argyriades, J (reprint author), Univ Paris 11, LAL, CNRS, IN2P3, Orsay, France.
RI Nemchenok, Igor/F-9715-2014; Novella, Pau/K-2845-2014; Nasteva,
Irina/M-8764-2014; Vala, Ladislav/L-4938-2016; Barabash,
Alexander/S-8851-2016
OI Novella, Pau/0000-0002-0923-3172; Nasteva, Irina/0000-0001-7115-7214;
FU Czech Republic; RFBR (Russia); STFC (UK); NSF (USA)
FX We thank the staff at the Modane Underground Laboratory for its
technical assistance in running the experiment, Vladimir Tretyak for
providing the Monte Carlo event generator, and Wade Fisher for helping
with the limit-setting program. We acknowledge support by the grants
agencies of the Czech Republic, RFBR (Russia), STFC (UK), and NSF (USA).
NR 21
TC 91
Z9 91
U1 0
U2 7
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD SEP
PY 2009
VL 80
IS 3
AR 032501
DI 10.1103/PhysRevC.80.032501
PG 5
WC Physics, Nuclear
SC Physics
GA 501LO
UT WOS:000270383600009
ER
PT J
AU Baltz, AJ
AF Baltz, A. J.
TI Higher-order QED calculation of ultrarelativistic heavy-ion production
of mu(+)mu(-) pairs
SO PHYSICAL REVIEW C
LA English
DT Article
ID COLLISIONS; DEPENDENCE; COLLIDERS
AB A higher-order QED calculation of the ultraperipheral heavy-ion cross section for mu(+)mu(-)pair production at the Relativistic Heavy Ion Collider and the Large Hadron Collider is carried out. The so-called Coulomb corrections lead to an even greater percentage decrease of mu(+)mu(-) production from perturbation theory than the corresponding decrease for e(+)e(-) pair production. Unlike the e(+)e(-) case, the finite charge distribution of the ions ( form factor) and the necessary subtraction of impact parameters with matter overlap are significant effects in calculation an observable ultraperipheral mu(+)mu(-) total cross section.
C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
RP Baltz, AJ (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
NR 28
TC 8
Z9 8
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD SEP
PY 2009
VL 80
IS 3
AR 034901
DI 10.1103/PhysRevC.80.034901
PG 6
WC Physics, Nuclear
SC Physics
GA 501LO
UT WOS:000270383600063
ER
PT J
AU Bonatsos, D
McCutchan, EA
Casten, RF
Casperson, RJ
Werner, V
Williams, E
AF Bonatsos, Dennis
McCutchan, E. A.
Casten, R. F.
Casperson, R. J.
Werner, V.
Williams, E.
TI Regularities and symmetries of subsets of collective 0(+) states
SO PHYSICAL REVIEW C
LA English
DT Article
ID INTERACTING-BOSON MODEL; CRITICAL-POINT SYMMETRY; QUANTUM
PHASE-TRANSITIONS; NUCLEI; VERSION
AB The energies of subsets of excited 0(+) states in geometric collective models are investigated and found to exhibit intriguing regularities. In models with an infinite square well potential, it is found that a single formula, dependent on only the number of dimensions, describes a subset of 0(+) states. The same behavior of a subset of 0(+) states is seen in the large boson number limit of the interacting boson approximation (IBA) model near the critical point of a first-order phase transition, in contrast to the fact that these 0(+) state energies exhibit a harmonic behavior in all three limiting symmetries of the IBA. Finally, the observed regularities in 0(+) energies are analyzed in terms of the underlying group theoretical framework of the different models.
C1 [Bonatsos, Dennis] NCSR Demokritos, Inst Nucl Phys, GR-15310 Athens, Greece.
[McCutchan, E. A.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
[Casten, R. F.; Casperson, R. J.; Werner, V.; Williams, E.] Yale Univ, Wright Nucl Struct Lab, New Haven, CT 06520 USA.
RP Bonatsos, D (reprint author), NCSR Demokritos, Inst Nucl Phys, GR-15310 Athens, Greece.
RI Williams, Elizabeth/D-3442-2014; Werner, Volker/C-1181-2017
OI Werner, Volker/0000-0003-4001-0150
FU US DOE [DE-FG02-91ER-40609]; DOE Office of Nuclear Physics
[DE-AC02-06CH11357]
FX The authors are thankful to M. A. Caprio for useful discussions. This
work was supported by US DOE Grant No. DE-FG02-91ER-40609 and by the DOE
Office of Nuclear Physics under Contract DE-AC02-06CH11357.
NR 51
TC 14
Z9 14
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD SEP
PY 2009
VL 80
IS 3
AR 034311
DI 10.1103/PhysRevC.80.034311
PG 8
WC Physics, Nuclear
SC Physics
GA 501LO
UT WOS:000270383600028
ER
PT J
AU Caggiano, JA
Hasty, RD
Korbly, SE
Park, WH
Warren, GA
AF Caggiano, J. A.
Hasty, R. D.
Korbly, S. E.
Park, W. H.
Warren, G. A.
TI New measurements of the lifetimes of excited states of Mn-55 below 2.7
MeV
SO PHYSICAL REVIEW C
LA English
DT Article
AB The lifetimes of the excited states of Mn-55 between 1.5 and 2.7 MeV were measured using nuclear resonance fluorescence. The absolute lifetimes of the excited levels were determined from simultaneous measurements of manganese and aluminum. In this approach, the precisely known aluminum state serves as a means to normalize the results. Our findings differ from the evaluated level lifetimes in the Evaluated Nuclear Structure Data File (ENSDF), but agree with earlier nuclear resonance fluorescence measurements.
C1 [Caggiano, J. A.; Warren, G. A.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Hasty, R. D.; Korbly, S. E.; Park, W. H.] Passport Syst Inc, Billerica, MA 01862 USA.
RP Caggiano, JA (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
FU US Department of Energy (DOE) by Battelle Memorial Institute
[DE-AC06-76RLO 1830]; DHS/DNDO, SPAWAR [N66001-05-D-6011/0002,
N66001-07-D-0025/0001]
FX The authors wish to thank the staff of the MIT-HVRL for the successful
completion of the measurements. PNNL is operated for the US Department
of Energy (DOE) by Battelle Memorial Institute under Contract
DE-AC06-76RLO 1830. PNNLs contribution to this project was funded by the
US DOE Office of Defense Nuclear Nonproliferation, Office of
Nonproliferation Research and Development. Passport is supported in part
by DHS/DNDO, SPAWAR Contract N66001-05-D-6011/0002 and
N66001-07-D-0025/0001.
NR 9
TC 0
Z9 0
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD SEP
PY 2009
VL 80
IS 3
AR 037302
DI 10.1103/PhysRevC.80.037302
PG 4
WC Physics, Nuclear
SC Physics
GA 501LO
UT WOS:000270383600092
ER
PT J
AU Deibel, CM
Clark, JA
Lewis, R
Parikh, A
Parker, PD
Wrede, C
AF Deibel, C. M.
Clark, J. A.
Lewis, R.
Parikh, A.
Parker, P. D.
Wrede, C.
TI Toward an experimentally determined Al-26(m)(p,gamma)Si-27 reaction rate
in ONe novae
SO PHYSICAL REVIEW C
LA English
DT Article
ID PROTON THRESHOLD STATES; GALACTIC AL-26; SI-27; DECAYS; GRAINS
AB Strong evidence of the nucleosynthesis of Galactic Al-26 has been found through measurements involving excesses in Mg-26 from the decay of Al-26 in meteoritic inclusions and the 1.809-MeV gamma-ray line detected by satellites such as CGRO and INTEGRAL. Several sites for the production of Al-26 have been suggested, including ONe novae. Destruction of Al-26 in ONe novae is possible via the reactions Al-26(g)(p,gamma)Si-27 and Al-26(m)(p,gamma)Si-27. In the present work, resonance parameters for the Al-26(m)(p,gamma)Si-27 reaction have been determined via studies of the Al-27(He-3,t)Si-27*(p)Al-26(m) and Si-28(He-3,alpha)Si-27*(p)Al-26(m) reactions. Several new Al-26(m) + p resonances have been discovered within 1 MeV above the proton threshold of 7.691 MeV. Excitation energies and proton-branching ratios for those and previously known states are reported.
C1 [Deibel, C. M.; Clark, J. A.; Lewis, R.; Parikh, A.; Parker, P. D.; Wrede, C.] Yale Univ, Wright Nucl Struct Lab, New Haven, CT 06520 USA.
[Deibel, C. M.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
[Deibel, C. M.] Michigan State Univ, Joint Inst Nucl Astrophys, E Lansing, MI 48824 USA.
RP Deibel, CM (reprint author), Yale Univ, Wright Nucl Struct Lab, New Haven, CT 06520 USA.
EM deibel@phy.anl.gov
FU US Department of Energy [DE-FG02-91ER40609]
FX Jac Caggiano provided much insight with regards to the technical and
physical aspects of this experiment. We are indebted to the staff at
WNSL and acknowledge the support of US Department of Energy under Grant
No. DE-FG02-91ER40609.
NR 35
TC 13
Z9 13
U1 1
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD SEP
PY 2009
VL 80
IS 3
AR 035806
DI 10.1103/PhysRevC.80.035806
PG 8
WC Physics, Nuclear
SC Physics
GA 501LO
UT WOS:000270383600090
ER
PT J
AU Gavalian, G
Burkert, VD
Elouadrhiri, L
Holtrop, M
Stepanyan, S
Abrahamyan, D
Adams, G
Amaryan, MJ
Ambrozewicz, P
Anghinolfi, M
Asavapibhop, B
Asryan, G
Avakian, H
Bagdasaryan, H
Baillie, N
Ball, JP
Baltzell, NA
Barrow, S
Batourine, V
Battaglieri, M
Beard, K
Bedlinskiy, I
Bektasoglu, M
Bellis, M
Benmouna, N
Berman, BL
Biselli, AS
Bonner, BE
Bouchigny, S
Boiarinov, S
Bradford, R
Branford, D
Briscoe, WJ
Brooks, WK
Bultmann, S
Butuceanu, C
Calarco, JR
Careccia, SL
Carman, DS
Carnahan, B
Chen, S
Cole, PL
Coleman, A
Collins, P
Coltharp, P
Cords, D
Corvisiero, P
Crabb, D
Crannell, H
Crede, V
Cummings, JP
Dashyan, N
De Masi, R
De Vita, R
De Sanctis, E
Degtyarenko, PV
Denizli, H
Dennis, L
Deur, A
Dharmawardane, KV
Dhuga, KS
Dickson, R
Djalali, C
Dodge, GE
Donnelly, J
Doughty, D
Dragovitsch, P
Dugger, M
Dytman, S
Dzyubak, OP
Egiyan, H
Egiyan, KS
El Fassi, L
Empl, A
Eugenio, P
Fatemi, R
Fedotov, G
Feldman, G
Feuerbach, RJ
Forest, TA
Funsten, H
Garcon, M
Gilfoyle, GP
Giovanetti, KL
Girod, FX
Goetz, JT
Golovatch, E
Gonenc, A
Gothe, RW
Griffioen, KA
Guidal, M
Guillo, M
Guler, N
Guo, L
Gyurjyan, V
Hadjidakis, C
Hafidi, K
Hakobyan, H
Hakobyan, RS
Hardie, J
Hassall, N
Heddle, D
Hersman, FW
Hicks, K
Hleiqawi, I
Hu, J
Huertas, M
Hyde, CE
Ilieva, Y
Ireland, DG
Ishkhanov, BS
Isupov, EL
Ito, MM
Jenkins, D
Jo, HS
Joo, K
Juengst, HG
Kalantarians, N
Kellie, JD
Khandaker, M
Kim, KY
Kim, K
Kim, W
Klein, A
Klein, FJ
Klusman, M
Kossov, M
Kramer, LH
Kubarovsky, V
Kuhn, J
Kuhn, SE
Kuleshov, SV
Kuznetsov, M
Lachniet, J
Laget, JM
Langheinrich, J
Lawrence, D
Lima, ACS
Livingston, K
Lu, HY
Lukashin, K
MacCormick, M
Manak, JJ
Markov, N
McAleer, S
McKinnon, B
McNabb, JWC
Mecking, BA
Mestayer, MD
Meyer, CA
Mibe, T
Mikhailov, K
Minehart, R
Mirazita, M
Miskimen, R
Mokeev, V
Moriya, K
Morrow, SA
Moteabbed, M
Mueller, J
Mutchler, GS
Nadel-Turonski, P
Napolitano, J
Nasseripour, R
Niccolai, S
Niculescu, G
Niculescu, I
Niczyporuk, BB
Niroula, MR
Niyazov, RA
Nozar, M
O'Rielly, GV
Osipenko, M
Ostrovidov, AI
Park, K
Pasyuk, E
Paterson, C
Philips, SA
Pierce, J
Pivnyuk, N
Pocanic, D
Pogorelko, O
Polli, E
Popa, I
Pozdniakov, S
Preedom, BM
Price, JW
Prok, Y
Protopopescu, D
Qin, LM
Raue, BA
Riccardi, G
Ricco, G
Ripani, M
Ritchie, BG
Ronchetti, F
Rosner, G
Rossi, P
Rowntree, D
Rubin, PD
Sabatie, F
Salamanca, J
Salgado, C
Santoro, JP
Sapunenko, V
Schumacher, RA
Serov, VS
Sharabian, YG
Shaw, J
Shvedunov, NV
Skabelin, AV
Smith, ES
Smith, LC
Sober, DI
Sokhan, D
Stavinsky, A
Stepanyan, SS
Stokes, BE
Stoler, P
Strakovsky, II
Strauch, S
Suleiman, R
Taiuti, M
Taylor, S
Tedeschi, DJ
Thoma, U
Thompson, R
Tkabladze, A
Tkachenko, S
Tur, C
Ungaro, M
Vineyard, MF
Vlassov, AV
Watts, DP
Weinstein, LB
Weygand, DP
Williams, M
Wolin, E
Wood, MH
Yegneswaran, A
Yun, J
Yurov, M
Zana, L
Zhang, J
Zhao, B
Zhao, ZW
AF Gavalian, G.
Burkert, V. D.
Elouadrhiri, L.
Holtrop, M.
Stepanyan, S.
Abrahamyan, D.
Adams, G.
Amaryan, M. J.
Ambrozewicz, P.
Anghinolfi, M.
Asavapibhop, B.
Asryan, G.
Avakian, H.
Bagdasaryan, H.
Baillie, N.
Ball, J. P.
Baltzell, N. A.
Barrow, S.
Batourine, V.
Battaglieri, M.
Beard, K.
Bedlinskiy, I.
Bektasoglu, M.
Bellis, M.
Benmouna, N.
Berman, B. L.
Biselli, A. S.
Bonner, B. E.
Bouchigny, S.
Boiarinov, S.
Bradford, R.
Branford, D.
Briscoe, W. J.
Brooks, W. K.
Bueltmann, S.
Butuceanu, C.
Calarco, J. R.
Careccia, S. L.
Carman, D. S.
Carnahan, B.
Chen, S.
Cole, P. L.
Coleman, A.
Collins, P.
Coltharp, P.
Cords, D.
Corvisiero, P.
Crabb, D.
Crannell, H.
Crede, V.
Cummings, J. P.
Dashyan, N.
De Masi, R.
De Vita, R.
De Sanctis, E.
Degtyarenko, P. V.
Denizli, H.
Dennis, L.
Deur, A.
Dharmawardane, K. V.
Dhuga, K. S.
Dickson, R.
Djalali, C.
Dodge, G. E.
Donnelly, J.
Doughty, D.
Dragovitsch, P.
Dugger, M.
Dytman, S.
Dzyubak, O. P.
Egiyan, H.
Egiyan, K. S.
El Fassi, L.
Empl, A.
Eugenio, P.
Fatemi, R.
Fedotov, G.
Feldman, G.
Feuerbach, R. J.
Forest, T. A.
Funsten, H.
Garcon, M.
Gilfoyle, G. P.
Giovanetti, K. L.
Girod, F. X.
Goetz, J. T.
Golovatch, E.
Gonenc, A.
Gothe, R. W.
Griffioen, K. A.
Guidal, M.
Guillo, M.
Guler, N.
Guo, L.
Gyurjyan, V.
Hadjidakis, C.
Hafidi, K.
Hakobyan, H.
Hakobyan, R. S.
Hardie, J.
Hassall, N.
Heddle, D.
Hersman, F. W.
Hicks, K.
Hleiqawi, I.
Hu, J.
Huertas, M.
Hyde, C. E.
Ilieva, Y.
Ireland, D. G.
Ishkhanov, B. S.
Isupov, E. L.
Ito, M. M.
Jenkins, D.
Jo, H. S.
Joo, K.
Juengst, H. G.
Kalantarians, N.
Kellie, J. D.
Khandaker, M.
Kim, K. Y.
Kim, K.
Kim, W.
Klein, A.
Klein, F. J.
Klusman, M.
Kossov, M.
Kramer, L. H.
Kubarovsky, V.
Kuhn, J.
Kuhn, S. E.
Kuleshov, S. V.
Kuznetsov, M.
Lachniet, J.
Laget, J. M.
Langheinrich, J.
Lawrence, D.
Lima, A. C. S.
Livingston, K.
Lu, H. Y.
Lukashin, K.
MacCormick, M.
Manak, J. J.
Markov, N.
McAleer, S.
McKinnon, B.
McNabb, J. W. C.
Mecking, B. A.
Mestayer, M. D.
Meyer, C. A.
Mibe, T.
Mikhailov, K.
Minehart, R.
Mirazita, M.
Miskimen, R.
Mokeev, V.
Moriya, K.
Morrow, S. A.
Moteabbed, M.
Mueller, J.
Mutchler, G. S.
Nadel-Turonski, P.
Napolitano, J.
Nasseripour, R.
Niccolai, S.
Niculescu, G.
Niculescu, I.
Niczyporuk, B. B.
Niroula, M. R.
Niyazov, R. A.
Nozar, M.
O'Rielly, G. V.
Osipenko, M.
Ostrovidov, A. I.
Park, K.
Pasyuk, E.
Paterson, C.
Philips, S. A.
Pierce, J.
Pivnyuk, N.
Pocanic, D.
Pogorelko, O.
Polli, E.
Popa, I.
Pozdniakov, S.
Preedom, B. M.
Price, J. W.
Prok, Y.
Protopopescu, D.
Qin, L. M.
Raue, B. A.
Riccardi, G.
Ricco, G.
Ripani, M.
Ritchie, B. G.
Ronchetti, F.
Rosner, G.
Rossi, P.
Rowntree, D.
Rubin, P. D.
Sabatie, F.
Salamanca, J.
Salgado, C.
Santoro, J. P.
Sapunenko, V.
Schumacher, R. A.
Serov, V. S.
Sharabian, Y. G.
Shaw, J.
Shvedunov, N. V.
Skabelin, A. V.
Smith, E. S.
Smith, L. C.
Sober, D. I.
Sokhan, D.
Stavinsky, A.
Stepanyan, S. S.
Stokes, B. E.
Stoler, P.
Strakovsky, I. I.
Strauch, S.
Suleiman, R.
Taiuti, M.
Taylor, S.
Tedeschi, D. J.
Thoma, U.
Thompson, R.
Tkabladze, A.
Tkachenko, S.
Tur, C.
Ungaro, M.
Vineyard, M. F.
Vlassov, A. V.
Watts, D. P.
Weinstein, L. B.
Weygand, D. P.
Williams, M.
Wolin, E.
Wood, M. H.
Yegneswaran, A.
Yun, J.
Yurov, M.
Zana, L.
Zhang, J.
Zhao, B.
Zhao, Z. W.
CA CLAS Collaboration
TI Beam spin asymmetries in deeply virtual Compton scattering (DVCS) with
CLAS at 4.8 GeV
SO PHYSICAL REVIEW C
LA English
DT Article
ID PARTON DISTRIBUTIONS; NUCLEON; MESONS
AB We report measurements of the beam spin asymmetry in deeply virtual Compton scattering (DVCS) at an electron beam energy of 4.8 GeV using the CLAS detector at the Thomas Jefferson National Accelerator Facility. The DVCS beam spin asymmetry has been measured in a wide range of kinematics, 1.0 < Q(2) < 2.8 (GeV/c)(2), 0.12 < x(B) < 0.48, and 0.1 < -t < 0.8 (GeV/c)(2), using the reaction (e) over right arrow -> e'pX. The number of H(e, e'gamma p) and H(e, e'pi(0)p) events are separated in each (Q(2), x(B), t) bin by a fit to the line shape of the H(e, e'p) X M(x)(2) distribution. The validity of the method was studied in detail using experimental and simulated data. It was shown that with the achieved missing mass squared resolution and the available statistics, the separation of DVCS-Bethe-Heitler and pi(0) events can reliably be done with less than 5% uncertainty. Also, the Q(2) and t dependences of the sin phi moments of the asymmetry are extracted and compared with theoretical calculations.
C1 [Gavalian, G.; Holtrop, M.; Calarco, J. R.; Egiyan, H.; Hersman, F. W.; Zana, L.] Univ New Hampshire, Durham, NH 03824 USA.
[Gavalian, G.; Amaryan, M. J.; Bagdasaryan, H.; Bektasoglu, M.; Bueltmann, S.; Careccia, S. L.; Dharmawardane, K. V.; Dodge, G. E.; Forest, T. A.; Guler, N.; Hyde, C. E.; Juengst, H. G.; Kalantarians, N.; Klein, A.; Kuhn, S. E.; Lachniet, J.; Niroula, M. R.; Niyazov, R. A.; Qin, L. M.; Sabatie, F.; Tkachenko, S.; Weinstein, L. B.; Yun, J.; Zhang, J.] Old Dominion Univ, Norfolk, VA 23529 USA.
[Burkert, V. D.; Elouadrhiri, L.; Stepanyan, S.; Avakian, H.; Bouchigny, S.; Boiarinov, S.; Brooks, W. K.; Carman, D. S.; Cole, P. L.; Cords, D.; Degtyarenko, P. V.; Deur, A.; Doughty, D.; Egiyan, H.; Guo, L.; Gyurjyan, V.; Hardie, J.; Heddle, D.; Ito, M. M.; Klein, F. J.; Kramer, L. H.; Kubarovsky, V.; Laget, J. M.; Lukashin, K.; Manak, J. J.; Mecking, B. A.; Mestayer, M. D.; Niczyporuk, B. B.; Niyazov, R. A.; Nozar, M.; Raue, B. A.; Santoro, J. P.; Sapunenko, V.; Sharabian, Y. G.; Smith, E. S.; Thoma, U.; Weygand, D. P.; Wolin, E.; Yegneswaran, A.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
[El Fassi, L.; Hafidi, K.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Ball, J. P.; Collins, P.; Dugger, M.; Pasyuk, E.; Ritchie, B. G.] Arizona State Univ, Tempe, AZ 85287 USA.
[Goetz, J. T.] Univ Calif Los Angeles, Los Angeles, CA 90095 USA.
[Price, J. W.] Calif State Univ Dominguez Hills, Carson, CA 90747 USA.
[Bellis, M.; Bradford, R.; Dickson, R.; Feuerbach, R. J.; Kuhn, J.; McNabb, J. W. C.; Meyer, C. A.; Moriya, K.; Schumacher, R. A.; Williams, M.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
[Carnahan, B.; Crannell, H.; Hakobyan, R. S.; Klein, F. J.; Santoro, J. P.; Sober, D. I.] Catholic Univ Amer, Washington, DC 20064 USA.
[De Masi, R.; Garcon, M.; Girod, F. X.; Laget, J. M.; Morrow, S. A.; Sabatie, F.] CEA Saclay, Serv Phys Nucl, F-91191 Gif Sur Yvette, France.
[Doughty, D.; Hardie, J.; Heddle, D.] Christopher Newport Univ, Newport News, VA 23606 USA.
[Joo, K.; Markov, N.; Ungaro, M.; Zhao, B.] Univ Connecticut, Storrs, CT 06269 USA.
[Branford, D.; Sokhan, D.] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland.
[Biselli, A. S.] Fairfield Univ, Fairfield, CT 06824 USA.
[Ambrozewicz, P.; Gonenc, A.; Kramer, L. H.; Moteabbed, M.; Raue, B. A.] Florida Int Univ, Miami, FL 33199 USA.
[Barrow, S.; Chen, S.; Coltharp, P.; Crede, V.; Dennis, L.; Dragovitsch, P.; Eugenio, P.; McAleer, S.; Ostrovidov, A. I.; Riccardi, G.; Stokes, B. E.] Florida State Univ, Tallahassee, FL 32306 USA.
[Benmouna, N.; Berman, B. L.; Briscoe, W. J.; Dhuga, K. S.; Feldman, G.; Ilieva, Y.; Lima, A. C. S.; Nadel-Turonski, P.; Nasseripour, R.; Niccolai, S.; Niculescu, I.; O'Rielly, G. V.; Philips, S. A.; Popa, I.; Strakovsky, I. I.; Tkabladze, A.] George Washington Univ, Washington, DC 20052 USA.
[Donnelly, J.; Hassall, N.; Ireland, D. G.; Kellie, J. D.; Livingston, K.; McKinnon, B.; Paterson, C.; Protopopescu, D.; Rosner, G.; Watts, D. P.] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland.
[Abrahamyan, D.; Cole, P. L.; Salamanca, J.] Idaho State Univ, Pocatello, ID 83209 USA.
[Avakian, H.; De Sanctis, E.; Mirazita, M.; Polli, E.; Ronchetti, F.; Rossi, P.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
[Anghinolfi, M.; Battaglieri, M.; Corvisiero, P.; De Vita, R.; Golovatch, E.; Osipenko, M.; Ricco, G.; Ripani, M.; Sapunenko, V.; Taiuti, M.] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy.
[Bouchigny, S.; Guidal, M.; Hadjidakis, C.; Jo, H. S.; MacCormick, M.; Morrow, S. A.; Niccolai, S.] Inst Phys Nucl ORSAY, Orsay, France.
[Bedlinskiy, I.; Boiarinov, S.; Kossov, M.; Kuleshov, S. V.; Kuznetsov, M.; Mikhailov, K.; Pivnyuk, N.; Pogorelko, O.; Pozdniakov, S.; Serov, V. S.; Stavinsky, A.; Vlassov, A. V.] Inst Theoret & Expt Phys, RU-117259 Moscow, Russia.
[Beard, K.; Giovanetti, K. L.; Niculescu, G.; Niculescu, I.] James Madison Univ, Harrisonburg, VA 22807 USA.
[Batourine, V.; Kim, K.; Kim, W.; Kuleshov, S. V.; Kuznetsov, M.; Park, K.; Stepanyan, S. S.; Yurov, M.] Kyungpook Natl Univ, Taegu 702701, South Korea.
[Prok, Y.; Rowntree, D.; Skabelin, A. V.; Suleiman, R.] MIT, Cambridge, MA 02139 USA.
[Asavapibhop, B.; Lawrence, D.; Miskimen, R.; Shaw, J.; Wood, M. H.] Univ Massachusetts, Amherst, MA 01003 USA.
[Fedotov, G.; Golovatch, E.; Ishkhanov, B. S.; Isupov, E. L.; Mokeev, V.; Osipenko, M.; Shvedunov, N. V.] Moscow MV Lomonosov State Univ, Gen Nucl Phys Inst, RU-119899 Moscow, Russia.
[Khandaker, M.; Salgado, C.] Norfolk State Univ, Norfolk, VA 23504 USA.
[Bektasoglu, M.; Hicks, K.; Hleiqawi, I.; Mibe, T.; Niculescu, G.; Tkabladze, A.] Ohio Univ, Athens, OH 45701 USA.
[Denizli, H.; Dytman, S.; Kim, K. Y.; Mueller, J.; Thompson, R.] Univ Pittsburgh, Pittsburgh, PA 15260 USA.
[Adams, G.; Biselli, A. S.; Cummings, J. P.; Empl, A.; Hu, J.; Klusman, M.; Kubarovsky, V.; Napolitano, J.; Stoler, P.; Ungaro, M.] Rensselaer Polytech Inst, Troy, NY 12180 USA.
[Bonner, B. E.; Mutchler, G. S.; Taylor, S.] Rice Univ, Houston, TX 77005 USA.
[Gilfoyle, G. P.; Rubin, P. D.; Vineyard, M. F.] Univ Richmond, Richmond, VA 23173 USA.
[Baltzell, N. A.; Djalali, C.; Dzyubak, O. P.; Gothe, R. W.; Guillo, M.; Huertas, M.; Langheinrich, J.; Lu, H. Y.; Preedom, B. M.; Strauch, S.; Tedeschi, D. J.; Tur, C.; Wood, M. H.; Zhao, Z. W.] Univ S Carolina, Columbia, SC 29208 USA.
[Vineyard, M. F.] Union Coll, Schenectady, NY 12308 USA.
[Jenkins, D.] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA.
[Crabb, D.; Fatemi, R.; Joo, K.; Minehart, R.; Pierce, J.; Pocanic, D.; Prok, Y.; Smith, L. C.] Univ Virginia, Charlottesville, VA 22901 USA.
[Baillie, N.; Butuceanu, C.; Coleman, A.; Funsten, H.; Griffioen, K. A.] Coll William & Mary, Williamsburg, VA 23187 USA.
[Asryan, G.; Dashyan, N.; Egiyan, K. S.; Hakobyan, H.] Yerevan Phys Inst, Yerevan 375036, Armenia.
RP Gavalian, G (reprint author), Univ New Hampshire, Durham, NH 03824 USA.
RI Meyer, Curtis/L-3488-2014; Sabatie, Franck/K-9066-2015; Osipenko,
Mikhail/N-8292-2015; Zhang, Jixie/A-1461-2016; Kuleshov,
Sergey/D-9940-2013; Schumacher, Reinhard/K-6455-2013; Ireland,
David/E-8618-2010; Bektasoglu, Mehmet/A-2074-2012; Lu,
Haiyun/B-4083-2012; Protopopescu, Dan/D-5645-2012; riccardi,
gabriele/A-9269-2012; Zana, Lorenzo/H-3032-2012; Isupov,
Evgeny/J-2976-2012; Ishkhanov, Boris/E-1431-2012; Zhao, Bo/J-6819-2012;
Brooks, William/C-8636-2013
OI Meyer, Curtis/0000-0001-7599-3973; Sabatie, Franck/0000-0001-7031-3975;
Osipenko, Mikhail/0000-0001-9618-3013; Sapunenko,
Vladimir/0000-0003-1877-9043; Hyde, Charles/0000-0001-7282-8120; Bellis,
Matthew/0000-0002-6353-6043; Kuleshov, Sergey/0000-0002-3065-326X;
Schumacher, Reinhard/0000-0002-3860-1827; Ireland,
David/0000-0001-7713-7011; Zhao, Bo/0000-0003-3171-5335; Brooks,
William/0000-0001-6161-3570
FU Istituto Nazionale di Fisica Nucleare; French Centre National de la
Recherche Scientifique; French Agence Natioanale de la Recherche; French
Commissariat a l'Energie Atomique; US Department of Energy; National
Science Foundation; Korea Research Foundation; US DOE [DE-AC05-84150]
FX We acknowledge the outstanding work of the staff of the Accelerator
Division and the Physics Divisions, and the Hall B technical staff that
made this experiment possible. We also acknowledge M. Vanderhaeghen for
his useful discussions and for providing a computer code for the model
calculations. This work was supported in part by the Istituto Nazionale
di Fisica Nucleare, the French Centre National de la Recherche
Scientifique, the French Agence Natioanale de la Recherche, the French
Commissariat a l'Energie Atomique, the US Department of Energy, the
National Science Foundation, and the Korea Research Foundation. Authored
by The Southeastern Universities Research Association, Inc., under US
DOE Contract No. DE-AC05-84150.
NR 31
TC 24
Z9 24
U1 0
U2 6
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD SEP
PY 2009
VL 80
IS 3
AR 035206
DI 10.1103/PhysRevC.80.035206
PG 14
WC Physics, Nuclear
SC Physics
GA 501LO
UT WOS:000270383600077
ER
PT J
AU Guray, RT
Ozkan, N
Yalcin, C
Palumbo, A
Deboer, R
Gorres, J
Leblanc, PJ
O'Brien, S
Strandberg, E
Tan, WP
Wiescher, M
Fulop, Z
Somorjai, E
Lee, HY
Greene, JP
AF Guray, R. T.
Ozkan, N.
Yalcin, C.
Palumbo, A.
deBoer, R.
Gorres, J.
Leblanc, P. J.
O'Brien, S.
Strandberg, E.
Tan, W. P.
Wiescher, M.
Fulop, Zs.
Somorjai, E.
Lee, H. Y.
Greene, J. P.
TI Measurements of proton-induced reaction cross sections on Te-120 for the
astrophysical p process
SO PHYSICAL REVIEW C
LA English
DT Article
ID STATISTICAL-MODEL CALCULATIONS; NUCLEAR-LEVEL DENSITY; HARD-CORE
INTERACTION; REACTION-RATES; GAMMA-PROCESSES; FINITE NUCLEI; RELEVANT;
ENERGIES; NUCLEOSYNTHESIS
AB The total cross sections for the Te-120(p,gamma)I-121 and Te-120(p, n)I-120 reactions have been measured by the activation method in the effective center-of-mass energies 2.47 MeV <= E-c.m.(eff) <= 7.93 MeV and 6.44 MeV <= E-c.m.(eff) <= 7.93 MeV, respectively. The targets were prepared by evaporation of 99.4% isotopically enriched Te-120 on aluminum and carbon backing foils, and bombarded with proton beams provided by the FN tandem accelerator at the University of Notre Dame. The cross sections and S factors were deduced from the observed gamma ray activity, which was detected off-line by two Clover HPGe detectors mounted in close geometry. The results are presented and compared with the predictions of statistical model calculations using the codes NON-SMOKER and TALYS.
C1 [Guray, R. T.; Ozkan, N.; Yalcin, C.] Kocaeli Univ, Dept Phys, TR-41380 Umuttepe, Kocaeli, Turkey.
[Palumbo, A.; deBoer, R.; Gorres, J.; Leblanc, P. J.; O'Brien, S.; Strandberg, E.; Tan, W. P.; Wiescher, M.] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA.
[Fulop, Zs.; Somorjai, E.] ATOMKI, H-4001 Debrecen, Hungary.
[Lee, H. Y.; Greene, J. P.] Argonne Natl Lab, Argonne, IL 60439 USA.
RP Guray, RT (reprint author), Kocaeli Univ, Dept Phys, TR-41380 Umuttepe, Kocaeli, Turkey.
EM tguray@kocaeli.edu.tr
RI Fulop, Zsolt/B-2262-2008; Guray, Recep/B-9653-2009; Tan,
Wanpeng/A-4687-2008; Ozkan, Nalan/B-9710-2009; YALCIN, Caner/B-1881-2009
OI Tan, Wanpeng/0000-0002-5930-1823; YALCIN, Caner/0000-0002-3105-7267
FU The Scientific and Technological Research Council of Turkey TUBITAK
[108T508]; Kocaeli University BAP [2007/36]; National Science Foundation
(NSF) [)0434844]; Joint Institute for Nuclear Astrophysics JINA
[PHY02-16783]; The Hungarian Scientific Research Fund Programs OTKA
[K68801, T49245]
FX This work was supported by The Scientific and Technological Research
Council of Turkey TUBITAK Grant No. 108T508, Kocaeli University BAP
Grant No. 2007/36, the National Science Foundation (NSF) Grant No.
0434844, the Joint Institute for Nuclear Astrophysics JINA
(www.JINAweb.org) PHY02-16783, and The Hungarian Scientific Research
Fund Programs OTKA (K68801, T49245).
NR 46
TC 11
Z9 11
U1 0
U2 11
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9985
EI 2469-9993
J9 PHYS REV C
JI Phys. Rev. C
PD SEP
PY 2009
VL 80
IS 3
AR 035804
DI 10.1103/PhysRevC.80.035804
PG 7
WC Physics, Nuclear
SC Physics
GA 501LO
UT WOS:000270383600088
ER
PT J
AU Hwang, JK
Ramayya, AV
Hamilton, JH
Liu, SH
Li, K
Crowell, HL
Goodin, C
Luo, YX
Rasmussen, JO
Zhu, SJ
AF Hwang, J. K.
Ramayya, A. V.
Hamilton, J. H.
Liu, S. H.
Li, K.
Crowell, H. L.
Goodin, C.
Luo, Y. X.
Rasmussen, J. O.
Zhu, S. J.
TI High-spin states in Rb-91,Rb-92,Rb-93 and Pm-155,Pm-156
SO PHYSICAL REVIEW C
LA English
DT Article
ID SPONTANEOUS FISSION; NEUTRON; ISOTOPES; NUCLEI; RB-91
AB The excited states of the neutron-rich nuclei Pm-155,Pm-156 and Rb-91,Rb-92,Rb-93 were studied from the spontaneous fission of Cf-252. The gamma-gamma-gamma and x(Pm)-gamma-gamma triple coincidence relations were applied to identify the gamma transitions. Fourteen, six, three, twelve, and twelve new gamma transitions from high-spin states were observed in Pm-155,Pm-156, Rb-91,Rb-92, and Rb-93 (first levels), respectively. The pi 5/2[532] rotational band in Pm-155 was extended up to 23/2(-). The pi g(9/2) particle states and pi f(5/2) particle states in Rb-91,Rb-93 weakly coupled to Kr-90,Kr-92, respectively, are reported.
C1 [Hwang, J. K.; Ramayya, A. V.; Hamilton, J. H.; Liu, S. H.; Li, K.; Crowell, H. L.; Goodin, C.; Luo, Y. X.; Rasmussen, J. O.; Zhu, S. J.] Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA.
[Luo, Y. X.; Rasmussen, J. O.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Zhu, S. J.] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China.
RP Hwang, JK (reprint author), Vanderbilt Univ, Dept Phys, 221 Kirkland Hall, Nashville, TN 37235 USA.
OI Hwang, Jae-Kwang/0000-0002-4100-3473
FU US DOE [DE-FG05-88ER40407, DE-AC0376SF00098]; National Natural Science
Foundation of China [10575057, 10775078]; Major State Basic Research
Development Program [2007CB815005]
FX The work at Vanderbilt University and Lawrence Berkeley National
Laboratory are supported by US DOE under Grant and Contract Nos.
DE-FG05-88ER40407 and DE-AC0376SF00098. The work at Tsinghua University
was supported by the National Natural Science Foundation of China under
Grant Nos. 10575057 and 10775078, and the Major State Basic Research
Development Program 2007CB815005.
NR 17
TC 12
Z9 12
U1 0
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD SEP
PY 2009
VL 80
IS 3
AR 037304
DI 10.1103/PhysRevC.80.037304
PG 4
WC Physics, Nuclear
SC Physics
GA 501LO
UT WOS:000270383600094
ER
PT J
AU Ijaz, QA
Ma, WC
Abusara, H
Afanasjev, AV
Xu, YB
Yadav, RB
Zhang, YC
Carpenter, MP
Janssens, RVF
Khoo, TL
Lauritsen, T
Nisius, DT
AF Ijaz, Q. A.
Ma, W. C.
Abusara, H.
Afanasjev, A. V.
Xu, Y. B.
Yadav, R. B.
Zhang, Y. C.
Carpenter, M. P.
Janssens, R. V. F.
Khoo, T. L.
Lauritsen, T.
Nisius, D. T.
TI Excited superdeformed bands in Dy-154 and cranked relativistic mean
field interpretation
SO PHYSICAL REVIEW C
LA English
DT Article
ID MASS REGION; NUCLEI; ADDITIVITY; STATES
AB A Gammasphere experiment has been carried out using the Sn-122(S-36, 4n) reaction to search for excited superdeformed (SD) structures in Dy-154 to investigate the properties of neutron orbitals at superdeformation. Five new excited SD bands have been identified with intensities ranging from similar to 0.7% to similar to 0.03% relative to the Dy-154 reaction channel. Bands SD1, SD3, SD5, and SD6 are interpreted within the cranked relativistic mean field theory by using the effective alignment method. High-N intruder configurations are also discussed for bands SD2 and SD4, based on a comparison of their dynamic moments of inertia, which rise with increasing rotational frequency, with those of similar bands in neighboring nuclei.
C1 [Ijaz, Q. A.; Ma, W. C.; Abusara, H.; Afanasjev, A. V.; Xu, Y. B.; Yadav, R. B.; Zhang, Y. C.] Mississippi State Univ, Dept Phys & Astron, Mississippi State, MS 39762 USA.
[Carpenter, M. P.; Janssens, R. V. F.; Khoo, T. L.; Lauritsen, T.; Nisius, D. T.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
RP Ijaz, QA (reprint author), Mississippi State Univ, Dept Phys & Astron, Mississippi State, MS 39762 USA.
RI Carpenter, Michael/E-4287-2015
OI Carpenter, Michael/0000-0002-3237-5734
FU US Department of Energy, Office of Nuclear Physics [DE-FG02-95ER40939,
DE-FG02-07ER41459, DE-AC02-06CH11357]
FX This work was supported by the US Department of Energy, Office of
Nuclear Physics, under Grant Nos. DE-FG02-95ER40939, DE-FG02-07ER41459
(MSU), and DE-AC02-06CH11357 (ANL).
NR 27
TC 1
Z9 1
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD SEP
PY 2009
VL 80
IS 3
AR 034322
DI 10.1103/PhysRevC.80.034322
PG 7
WC Physics, Nuclear
SC Physics
GA 501LO
UT WOS:000270383600039
ER
PT J
AU Jeppesen, HB
Clark, RM
Gregorich, KE
Afanasjev, AV
Ali, MN
Allmond, JM
Beausang, CW
Cromaz, M
Deleplanque, MA
Dragojevic, I
Dvorak, J
Ellison, PA
Fallon, P
Garcia, MA
Gates, JM
Gros, S
Lee, IY
Macchiavelli, AO
Nelson, SL
Nitsche, H
Stavsetra, L
Stephens, FS
Wiedeking, M
AF Jeppesen, H. B.
Clark, R. M.
Gregorich, K. E.
Afanasjev, A. V.
Ali, M. N.
Allmond, J. M.
Beausang, C. W.
Cromaz, M.
Deleplanque, M. A.
Dragojevic, I.
Dvorak, J.
Ellison, P. A.
Fallon, P.
Garcia, M. A.
Gates, J. M.
Gros, S.
Lee, I. Y.
Macchiavelli, A. O.
Nelson, S. L.
Nitsche, H.
Stavsetra, L.
Stephens, F. S.
Wiedeking, M.
TI High-K multi-quasiparticle states and rotational bands in Lr-255(103)
SO PHYSICAL REVIEW C
LA English
DT Article
ID HEAVY-ELEMENTS; ISOMERS
AB Two isomeric states have been identified in Lr-255. The decay of the isomers populates rotational structures. Comparison with macroscopic-microscopic calculations suggests that the lowest observed sequence is built upon the [624]9/2(+) Nilsson state. However, microscopic cranked relativistic Hartree-Bogoliubov (CRHB) calculations do not reproduce the moment of inertia within typical accuracy. This is a clear challenge to theories describing the heaviest elements.
C1 [Jeppesen, H. B.; Clark, R. M.; Gregorich, K. E.; Ali, M. N.; Cromaz, M.; Deleplanque, M. A.; Dragojevic, I.; Dvorak, J.; Ellison, P. A.; Fallon, P.; Garcia, M. A.; Gates, J. M.; Gros, S.; Lee, I. Y.; Macchiavelli, A. O.; Nelson, S. L.; Nitsche, H.; Stavsetra, L.; Stephens, F. S.; Wiedeking, M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
[Afanasjev, A. V.] Mississippi State Univ, Dept Phys & Astron, Mississippi State, MS 39762 USA.
[Ali, M. N.; Dragojevic, I.; Ellison, P. A.; Garcia, M. A.; Gates, J. M.; Nelson, S. L.; Nitsche, H.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
[Allmond, J. M.; Beausang, C. W.] Univ Richmond, Dept Phys, Richmond, VA 23173 USA.
RP Jeppesen, HB (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
RI Garcia, Mitch/G-2413-2010; Ali, Mazhar/C-6473-2013;
OI Ali, Mazhar/0000-0002-1129-6105; Allmond, James
Mitchell/0000-0001-6533-8721
FU US DOE [DE-CA02-05CH11231, DE-FG52-06NA26206, DE-FG02-05ER41379,
DE-FG02-07ER41459]
FX We thank the staff of the 88-inch cyclotron. R. M. C. thanks T. J. Smith
for her help. This work was supported in part by the US DOE under
Contract No. DE-CA02-05CH11231 (LBNL) and Grant Nos. DE-FG52-06NA26206,
DE-FG02-05ER41379, and DE-FG02-07ER41459.
NR 21
TC 19
Z9 19
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD SEP
PY 2009
VL 80
IS 3
AR 034324
DI 10.1103/PhysRevC.80.034324
PG 4
WC Physics, Nuclear
SC Physics
GA 501LO
UT WOS:000270383600041
ER
PT J
AU Liao, JF
Koch, V
AF Liao, Jinfeng
Koch, Volker
TI Analytical relativistic ideal hydrodynamical solutions in (1+3)D with
longitudinal and transverse flows
SO PHYSICAL REVIEW C
LA English
DT Article
ID QUARK-GLUON PLASMA; ELLIPTIC FLOW; SOFTEST POINT; COLLISIONS; SIGNATURE;
MATTER; FLUID; SPS
AB A new method for solving relativistic ideal hydrodynamics in (1+3)D is developed. Longitudinal and transverse radial flows are explicitly embedded into the ansatz for the velocity field and the hydrodynamic equations are reduced to a single equation for the transverse velocity field only, which is analytically more tractable as compared to the full hydrodynamic equations. As an application we use the method to find analytically all possible solutions whose transverse velocity fields have power dependence on the proper time and transverse radius. The possible applications to relativistic heavy ion collisions and possible generalizations of the method are discussed.
C1 [Liao, Jinfeng; Koch, Volker] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
RP Liao, JF (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, MS70R0319,1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM jliao@lbl.gov; vkoch@lbl.gov
NR 61
TC 8
Z9 8
U1 1
U2 4
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD SEP
PY 2009
VL 80
IS 3
AR 034904
DI 10.1103/PhysRevC.80.034904
PG 9
WC Physics, Nuclear
SC Physics
GA 501LO
UT WOS:000270383600066
ER
PT J
AU Malace, SP
Adams, GS
Ahmidouch, A
Angelescu, T
Arrington, J
Asaturyan, R
Baker, OK
Benmouna, N
Blok, HP
Boeglin, WU
Bosted, PE
Breuer, H
Christy, ME
Cui, Y
Dalton, MM
Danagoulian, S
Day, D
Dunne, JA
Dutta, D
Ent, R
Fenker, HC
Gan, L
Gaskell, D
Hafidi, K
Hinton, W
Holt, RJ
Horn, T
Huber, GM
Hungerford, E
Jiang, X
Jones, M
Joo, K
Kalantarians, N
Kelly, JJ
Keppel, CE
Kinney, ER
Kubarovsky, V
Li, Y
Liang, Y
Markowitz, P
McGrath, E
McKee, P
Meekins, DG
Mkrtchyan, H
Navasardyan, T
Niculescu, G
Niculescu, I
Reimer, PE
Reinhold, J
Roche, J
Schulte, E
Segbefia, E
Smith, C
Smith, GR
Tadevosyan, V
Tang, L
Ungaro, M
Uzzle, A
Vidakovic, S
Villano, AN
Vulcan, WF
Wesselmann, FR
Wojtsekhowski, B
Wood, SA
Yuan, L
Zheng, X
AF Malace, S. P.
Adams, G. S.
Ahmidouch, A.
Angelescu, T.
Arrington, J.
Asaturyan, R.
Baker, O. K.
Benmouna, N.
Blok, H. P.
Boeglin, W. U.
Bosted, P. E.
Breuer, H.
Christy, M. E.
Cui, Y.
Dalton, M. M.
Danagoulian, S.
Day, D.
Dunne, J. A.
Dutta, D.
Ent, R.
Fenker, H. C.
Gan, L.
Gaskell, D.
Hafidi, K.
Hinton, W.
Holt, R. J.
Horn, T.
Huber, G. M.
Hungerford, E.
Jiang, X.
Jones, M.
Joo, K.
Kalantarians, N.
Kelly, J. J.
Keppel, C. E.
Kinney, E. R.
Kubarovsky, V.
Li, Y.
Liang, Y.
Markowitz, P.
McGrath, E.
McKee, P.
Meekins, D. G.
Mkrtchyan, H.
Navasardyan, T.
Niculescu, G.
Niculescu, I.
Reimer, P. E.
Reinhold, J.
Roche, J.
Schulte, E.
Segbefia, E.
Smith, C.
Smith, G. R.
Tadevosyan, V.
Tang, L.
Ungaro, M.
Uzzle, A.
Vidakovic, S.
Villano, A. N.
Vulcan, W. F.
Wesselmann, F. R.
Wojtsekhowski, B.
Wood, S. A.
Yuan, L.
Zheng, X.
TI Applications of quark-hadron duality in the F-2 structure function
SO PHYSICAL REVIEW C
LA English
DT Article
ID INELASTIC ELECTRON-SCATTERING; LEPTON-NUCLEON SCATTERING; PARTON
DISTRIBUTIONS; GLOBAL ANALYSIS; QCD ANALYSIS; ELECTROMAGNETIC
CORRECTIONS; CROSS-SECTIONS; LOCAL DUALITY; HIGHER TWIST; L/SIGMA-T
AB Inclusive electron-proton and electron-deuteron inelastic cross sections have been measured at Jefferson Lab (JLab) in the resonance region, at large Bjorken x, up to 0.92, and four-momentum transfer squared Q(2) up to 7.5 GeV2 in the experiment E00-116. These measurements are used to extend to larger x and Q(2) precision, quantitative, studies of the phenomenon of quark-hadron duality. Our analysis confirms, both globally and locally, the apparent "violation" of quark-hadron duality previously observed at a Q(2) of 3.5 GeV2 when resonance data are compared to structure function data created from CTEQ6M and MRST2004 parton distribution functions (PDFs). More importantly, our new data show that this discrepancy saturates by Q(2) similar to 4 GeV2, becoming Q(2) independent. This suggests only small violations of Q(2) evolution by contributions from the higher-twist terms in the resonance region that is confirmed by our comparisons to ALEKHIN and ALLM97. We conclude that the unconstrained strength of the CTEQ6M and MRST2004 PDFs at large x is the major source of the disagreement between data and these parametrizations in the kinematic regime we study and that, in view of quark-hadron duality, properly averaged resonance region data could be used in global quantum chromodynamics fits to reduce PDF uncertainties at large x.
C1 [Malace, S. P.; Baker, O. K.; Christy, M. E.; Ent, R.; Hinton, W.; Keppel, C. E.; Segbefia, E.; Tang, L.; Uzzle, A.; Yuan, L.] Hampton Univ, Hampton, VA 23668 USA.
[Malace, S. P.] Univ S Carolina, Columbia, SC 29208 USA.
[Adams, G. S.; Villano, A. N.] Rensselaer Polytech Inst, Troy, NY 12180 USA.
[Ahmidouch, A.; Danagoulian, S.] N Carolina Agr & Tech State Univ, Greensboro, NC 27411 USA.
[Angelescu, T.] Univ Bucharest, Bucharest, Romania.
[Arrington, J.; Hafidi, K.; Holt, R. J.; Reimer, P. E.; Schulte, E.; Zheng, X.] Argonne Natl Lab, Div Phys, Argonne, IL 60565 USA.
[Asaturyan, R.; Mkrtchyan, H.; Navasardyan, T.; Tadevosyan, V.] Yerevan Phys Inst, Yerevan 375036, Armenia.
[Baker, O. K.; Bosted, P. E.; Ent, R.; Fenker, H. C.; Gaskell, D.; Jones, M.; Keppel, C. E.; Kubarovsky, V.; Meekins, D. G.; Roche, J.; Smith, G. R.; Tang, L.; Vulcan, W. F.; Wojtsekhowski, B.; Wood, S. A.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
[Benmouna, N.] George Washington Univ, Washington, DC 20052 USA.
[Blok, H. P.] Vrije Univ Amsterdam, Dept Phys, NL-1081 HV Amsterdam, Netherlands.
[Boeglin, W. U.; Markowitz, P.; Reinhold, J.] Florida Int Univ, Miami, FL 33199 USA.
[Breuer, H.; Horn, T.; Kelly, J. J.] Univ Maryland, College Pk, MD 20742 USA.
[Cui, Y.; Hungerford, E.; Kalantarians, N.; Li, Y.] Univ Houston, Houston, TX 77204 USA.
[Dalton, M. M.] Univ Witwatersrand, Johannesburg, South Africa.
[Day, D.; McKee, P.; Smith, C.; Wesselmann, F. R.] Univ Virginia, Charlottesville, VA 22901 USA.
[Dunne, J. A.; Dutta, D.] Mississippi State Univ, Mississippi State, MS 39762 USA.
[Gan, L.] Univ N Carolina, Wilmington, NC 28403 USA.
[Huber, G. M.; Vidakovic, S.] Univ Regina, Regina, SK S4S 0A2, Canada.
[Jiang, X.] Rutgers State Univ, Piscataway, NJ 08855 USA.
[Joo, K.; Ungaro, M.] Univ Connecticut, Storrs, CT 06269 USA.
[Kinney, E. R.] Univ Colorado, Boulder, CO 80309 USA.
[Liang, Y.; Niculescu, G.] Ohio Univ, Athens, OH 45071 USA.
[Niculescu, G.; Niculescu, I.] James Madison Univ, Harrisonburg, VA 22807 USA.
RP Malace, SP (reprint author), Hampton Univ, Hampton, VA 23668 USA.
RI Holt, Roy/E-5803-2011; Arrington, John/D-1116-2012; Reimer,
Paul/E-2223-2013; Day, Donal/C-5020-2015; Dalton, Mark/B-5380-2016
OI Arrington, John/0000-0002-0702-1328; Day, Donal/0000-0001-7126-8934;
Dalton, Mark/0000-0001-9204-7559
FU National Science Foundation (NSF) [0400332, 0653508]; US Department of
Energy [DE-AC05-84ER40150]
FX This work is supported in part by research grants from the National
Science Foundation (NSF) and the US Department of Energy, including NSF
awards 0400332 and 0653508. We thank the Jefferson Lab Hall C scientific
and engineering staff for their outstanding support. The Southeastern
Universities Research Association operates the Thomas Jefferson National
Accelerator Facility under the US Department of Energy Contract
DE-AC05-84ER40150.
NR 79
TC 31
Z9 31
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD SEP
PY 2009
VL 80
IS 3
AR 035207
DI 10.1103/PhysRevC.80.035207
PG 29
WC Physics, Nuclear
SC Physics
GA 501LO
UT WOS:000270383600078
ER
PT J
AU Pastore, S
Girlanda, L
Schiavilla, R
Viviani, M
Wiringa, RB
AF Pastore, S.
Girlanda, L.
Schiavilla, R.
Viviani, M.
Wiringa, R. B.
TI Electromagnetic currents and magnetic moments in chiral effective field
theory (chi EFT)
SO PHYSICAL REVIEW C
LA English
DT Article
ID ELECTRON-DEUTERON SCATTERING; MONTE-CARLO CALCULATIONS; PARTIAL-WAVE
ANALYSIS; FEW-NUCLEON SYSTEMS; PERTURBATION-THEORY; 2-NUCLEON SYSTEM;
FORCES; LAGRANGIANS; DYNAMICS; EXCHANGE
AB A two-nucleon potential and consistent electromagnetic currents are derived in chiral effective field theory (chi EFT) at, respectively, Q(2) (or N(2)LO) and eQ (or N(3)LO), where Q generically denotes the low-momentum scale and e is the electric charge. Dimensional regularization is used to renormalize the pion-loop corrections. A simple expression is derived for the magnetic dipole (M1) operator associated with pion loops, consisting of two terms, one of which is determined, uniquely, by the isospin-dependent part of the two-pion-exchange potential. This decomposition is also carried out for the M1 operator arising from contact currents, in which the unique term is determined by the contact potential. Finally, the low-energy constants entering the N(2)LO potential are fixed by fits to the np S-and P-wave phase shifts up to 100 MeV laboratory energies.
C1 [Pastore, S.; Schiavilla, R.] Old Dominion Univ, Dept Phys, Norfolk, VA 23529 USA.
[Girlanda, L.] Univ Pisa, Dept Phys, I-56127 Pisa, Italy.
[Girlanda, L.; Viviani, M.] Ist Nazl Fis Nucl, I-56127 Pisa, Italy.
[Schiavilla, R.] Jefferson Lab, Newport News, VA 23606 USA.
[Wiringa, R. B.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
RP Pastore, S (reprint author), Old Dominion Univ, Dept Phys, Norfolk, VA 23529 USA.
RI Wiringa, Robert/M-4970-2015
FU US Department of Energy, Office of Nuclear Physics [DE-AC05-06OR23177,
DE-AC02-06CH11357]
FX Conversations at various stages of the present work with J.L. Goity are
gratefully acknowledged, as is a useful comment by J.D. Walecka in
reference to the N3LO magnetic moment operator. We thank F.
Gross and A. Stadler for advice relating to their phase-shift analysis,
E. Epelbaum for correspondence on various aspects of the N2LO
potential, R. Machleidt for a clarification on a phase convention, and
D. R. Phillips for a critical reading of the manuscript. One of the
authors (R.S.) also thanks the Physics Department of the University of
Pisa, the INFN Pisa branch, and especially the Pisa group for the
support and warm hospitality extended to him on several occasions. The
work of R.S. and R.B.W. is supported by the US Department of Energy,
Office of Nuclear Physics, under contracts DE-AC05-06OR23177 and
DE-AC02-06CH11357, respectively. Some of the calculations were made
possible by grants of computing
NR 60
TC 63
Z9 64
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD SEP
PY 2009
VL 80
IS 3
AR 034004
DI 10.1103/PhysRevC.80.034004
PG 22
WC Physics, Nuclear
SC Physics
GA 501LO
UT WOS:000270383600016
ER
PT J
AU Pittman, ST
Bardayan, DW
Blackmon, JC
Kozub, RL
Smith, MS
AF Pittman, S. T.
Bardayan, D. W.
Blackmon, J. C.
Kozub, R. L.
Smith, M. S.
TI Analysis of Al-25 energy levels observed in the Si-28(p,alpha)Al-25
reaction
SO PHYSICAL REVIEW C
LA English
DT Article
AB The level structure of Al-25 has been studied at the ORNL Holifield Radioactive Ion Beam Facility bymeasuring the angular and energy distributions of alpha particles from the Si-28(p,alpha)Al-25 reaction. Proton beams (similar to 10 nA) at laboratory energies of 40 and 42 MeV were generated by the 25 MV tandem accelerator and bombarded a natural silicon target (50 mu g/cm(2)). Seventeen levels were observed and spins for several were constrained through a distorted-wave Born approximation analysis of the angular distributions.
C1 [Pittman, S. T.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
[Bardayan, D. W.; Smith, M. S.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
[Blackmon, J. C.] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA.
[Kozub, R. L.] Tennessee Technol Univ, Dept Phys, Cookeville, TN 38505 USA.
RP Pittman, ST (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
RI Peters, William/B-3214-2012
OI Peters, William/0000-0002-3022-4924
FU US Department of Energy [DE-FG02-96ER40983, DE-AC05-00OR22725,
DE-FG02-96ER40955]
FX This work was supported by the US Department of Energy under Contracts
DE-FG02-96ER40983 (UTK), DE-AC05-00OR22725 (ORNL), and DE-FG02-96ER40955
(TTU).
NR 10
TC 0
Z9 0
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD SEP
PY 2009
VL 80
IS 3
AR 038801
DI 10.1103/PhysRevC.80.038801
PG 4
WC Physics, Nuclear
SC Physics
GA 501LO
UT WOS:000270383600103
ER
PT J
AU Urban, W
Pinston, JA
Simpson, GS
Smith, AG
Smith, JF
Rzaca-Urban, T
Ahmad, I
AF Urban, W.
Pinston, J. A.
Simpson, G. S.
Smith, A. G.
Smith, J. F.
Rzaca-Urban, T.
Ahmad, I.
TI The 11/2(-)[505] neutron extruder orbital in Sm-159
SO PHYSICAL REVIEW C
LA English
DT Article
ID ROTATIONAL BANDS; REGION; FISSION; NUCLEI; STATES
AB Excited states in Sm-159, populated following the spontaneous fission of Cf-252 have been studied by means of gamma spectroscopy, using the Gammasphere array. In Sm-159 we have identified an isomeric level with a half-life of T-1/2 = 116( 8) ns at an excitation energy of 1276.8 keV and observed a rotational band on top of this isomer. On the basis of the observed properties of the isomer and the band on top of it we propose that the 1276.8-keV level in Sm-159 corresponds to the 11/2(-)[505] neutron extruder configuration. The new excitation scheme of Sm-159 is compared to quasiparticle rotor model calculations.
C1 [Urban, W.] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France.
[Urban, W.; Rzaca-Urban, T.] Univ Warsaw, Fac Phys, PL-00681 Warsaw, Poland.
[Pinston, J. A.; Simpson, G. S.] Univ Grenoble 1, LPSC, CNRS IN2P3, Inst Natl Polytech Grenoble, F-38026 St Martin Dheres, France.
[Smith, A. G.; Smith, J. F.] Univ Manchester, Dept Phys & Astron, Manchester M13 9PL, Lancs, England.
[Ahmad, I.] Argonne Natl Lab, Argonne, IL 60439 USA.
RP Urban, W (reprint author), Inst Max Von Laue Paul Langevin, 6 Rue J Horowitz, F-38042 Grenoble, France.
NR 19
TC 5
Z9 5
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD SEP
PY 2009
VL 80
IS 3
AR 037301
DI 10.1103/PhysRevC.80.037301
PG 4
WC Physics, Nuclear
SC Physics
GA 501LO
UT WOS:000270383600091
ER
PT J
AU Villano, AN
Stoler, P
Bosted, PE
Connell, SH
Dalton, MM
Jones, MK
Kubarovsky, V
Adams, GS
Ahmidouch, A
Arrington, J
Asaturyan, R
Baker, OK
Breuer, H
Christy, ME
Danagoulian, S
Day, D
Dunne, JA
Dutta, D
Ent, R
Fenker, HC
Frolov, VV
Gan, L
Gaskell, D
Hinton, W
Holt, RJ
Horn, T
Huber, GM
Joo, K
Kalantarians, N
Keppel, CE
Li, Y
Lung, A
Mack, D
Malace, S
Markowitz, P
Meekins, DG
Mkrtchyan, H
Napolitano, J
Niculescu, G
Niculescu, I
Potterveld, DH
Reimer, PE
Reinhold, J
Roche, J
Rock, SE
Smith, GR
Stepanyan, S
Tadevosyan, V
Tvaskis, V
Ungaro, M
Uzzle, A
Vidakovic, S
Wesselmann, FR
Wojtsekhowski, B
Wood, SA
Yuan, L
Zheng, X
Zhu, H
AF Villano, A. N.
Stoler, P.
Bosted, P. E.
Connell, S. H.
Dalton, M. M.
Jones, M. K.
Kubarovsky, V.
Adams, G. S.
Ahmidouch, A.
Arrington, J.
Asaturyan, R.
Baker, O. K.
Breuer, H.
Christy, M. E.
Danagoulian, S.
Day, D.
Dunne, J. A.
Dutta, D.
Ent, R.
Fenker, H. C.
Frolov, V. V.
Gan, L.
Gaskell, D.
Hinton, W.
Holt, R. J.
Horn, T.
Huber, G. M.
Joo, K.
Kalantarians, N.
Keppel, C. E.
Li, Y.
Lung, A.
Mack, D.
Malace, S.
Markowitz, P.
Meekins, D. G.
Mkrtchyan, H.
Napolitano, J.
Niculescu, G.
Niculescu, I.
Potterveld, D. H.
Reimer, Paul E.
Reinhold, J.
Roche, J.
Rock, S. E.
Smith, G. R.
Stepanyan, S.
Tadevosyan, V.
Tvaskis, V.
Ungaro, M.
Uzzle, A.
Vidakovic, S.
Wesselmann, F. R.
Wojtsekhowski, B.
Wood, S. A.
Yuan, L.
Zheng, X.
Zhu, H.
TI Neutral pion electroproduction in the resonance region at high Q(2)
SO PHYSICAL REVIEW C
LA English
DT Article
ID N-DELTA TRANSITION; FORM-FACTORS; DELTA(1232) RESONANCE; RADIATIVE
CORRECTIONS; GAMMA-ASTERISK; QUARK-MODEL; SCATTERING; PHOTOPRODUCTION;
NUCLEON; ENERGY
AB The process ep -> ep pi(0) has been measured at Q(2) = 6.4 and 7.7 (GeV/c(2))(2) in Jefferson Lab's Hall C. Unpolarized differential cross sections are reported in the virtual photon-proton center-of-mass frame considering the process. gamma*p -> p pi(0). Various details relating to the background subtractions, radiative corrections, and systematic errors are discussed. The usefulness of the data with regard to the measurement of the electromagnetic properties of the well-known Delta (1232) resonance is covered in detail. Specifically considered are the electromagnetic and scalar-magnetic ratios R-EM and R-SM along with the magnetic transition form factor G*(M). It is found that the rapid falloff of the Delta (1232) contribution continues into this region of momentum transfer and that other resonances may be making important contributions in this region.
C1 [Villano, A. N.; Stoler, P.; Kubarovsky, V.; Adams, G. S.; Napolitano, J.] Rensselaer Polytech Inst, Troy, NY 12180 USA.
[Bosted, P. E.; Jones, M. K.; Baker, O. K.; Ent, R.; Fenker, H. C.; Gaskell, D.; Hinton, W.; Keppel, C. E.; Lung, A.; Mack, D.; Meekins, D. G.; Roche, J.; Smith, G. R.; Ungaro, M.; Wojtsekhowski, B.; Wood, S. A.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
[Connell, S. H.] Univ Johannesburg, Johannesburg, South Africa.
[Dalton, M. M.] Univ Witwatersrand, Johannesburg, South Africa.
[Ahmidouch, A.; Danagoulian, S.] N Carolina Agr & Tech State Univ, Greensboro, NC 27411 USA.
[Arrington, J.; Holt, R. J.; Potterveld, D. H.; Reimer, Paul E.; Zheng, X.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
[Asaturyan, R.; Mkrtchyan, H.; Stepanyan, S.; Tadevosyan, V.] Yerevan Phys Inst, Yerevan 375036, Armenia.
[Baker, O. K.; Christy, M. E.; Hinton, W.; Keppel, C. E.; Uzzle, A.; Yuan, L.] Hampton Univ, Hampton, VA 23668 USA.
[Breuer, H.; Horn, T.] Univ Maryland, College Pk, MD 20742 USA.
[Day, D.; Niculescu, G.; Wesselmann, F. R.; Zhu, H.] Univ Virginia, Charlottesville, VA 22901 USA.
[Dunne, J. A.; Dutta, D.] Mississippi State Univ, Mississippi State, MS 39762 USA.
[Dutta, D.] Triangle Univ Nucl Lab, Durham, NC 27708 USA.
[Dutta, D.] Duke Univ, Durham, NC 27708 USA.
[Frolov, V. V.] LIGO Livingston Observ, Livingston, LA 70754 USA.
[Gan, L.] Univ N Carolina, Wilmington, NC 28403 USA.
[Huber, G. M.; Vidakovic, S.] Univ Regina, Regina, SK S4S 0A2, Canada.
[Joo, K.; Ungaro, M.] Univ Connecticut, Storrs, CT 06269 USA.
[Kalantarians, N.; Li, Y.] Univ Houston, Houston, TX 77204 USA.
[Malace, S.] Univ Bucharest, Bucharest, Romania.
[Markowitz, P.; Reinhold, J.] Florida Int Univ, University Pk, FL 33199 USA.
[Niculescu, I.] James Madison Univ, Harrisonburg, VA 22807 USA.
[Rock, S. E.] Univ Massachusetts, Amherst, MA 01003 USA.
[Tvaskis, V.] Vrije Univ Amsterdam, Dept Phys, NL-1081 HV Amsterdam, Netherlands.
RP Villano, AN (reprint author), Univ Michigan, Ann Arbor, MI 48109 USA.
EM villaa@jlab.org
RI Holt, Roy/E-5803-2011; Arrington, John/D-1116-2012; Reimer,
Paul/E-2223-2013; Day, Donal/C-5020-2015; Dalton, Mark/B-5380-2016
OI Arrington, John/0000-0002-0702-1328; Day, Donal/0000-0001-7126-8934;
Dalton, Mark/0000-0001-9204-7559
FU US Department of Energy [DE-AC02-06CH11357, DEAC05-84ER40150]; US
National Science Foundation; South African National Research Foundation
FX We acknowledge the support of staff and management at Jefferson Lab.
This work is supported in part by research grants from the US Department
of Energy (including Grant DE-AC02-06CH11357), the US National Science
Foundation and the South African National Research Foundation. The
Southeastern Universities Research Association operates the Thomas
Jefferson National Accelerator Facility under the US Department of
Energy Contract DEAC05-84ER40150.
NR 64
TC 20
Z9 20
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
J9 PHYS REV C
JI Phys. Rev. C
PD SEP
PY 2009
VL 80
IS 3
AR 035203
DI 10.1103/PhysRevC.80.035203
PG 23
WC Physics, Nuclear
SC Physics
GA 501LO
UT WOS:000270383600074
ER
PT J
AU Wong, CY
AF Wong, Cheuk-Yin
TI Momentum kick model analysis of PHENIX near-side ridge data and photon
jet
SO PHYSICAL REVIEW C
LA English
DT Review
ID NUCLEUS-NUCLEUS COLLISIONS; GLUON DISTRIBUTION-FUNCTIONS; MASSIVE
SCHWINGER MODEL; HIGH-ENERGY SCATTERING; MONTE-CARLO PROGRAM;
DUAL-PARTON MODEL; HEAVY QUARKONIA; CROSS-SECTIONS; HADRON-NUCLEUS;
MULTIPARTICLE PRODUCTION
AB We analyze PHENIX near-side ridge data for central Au + Au collisions at root s(NN) = 200 GeV with the momentum-kick model, in which a near-side jet emerges near the surface, kicks medium partons, loses energy, and fragments into the trigger particle and fragmentation products. The kicked medium partons subsequently materialize as the observed ridge particles, which carry direct information on the early parton momentum distribution and the magnitude of the momentum kick. We find that the PHENIX ridge data can be described well by the momentum-kick model and the extracted early partons momentum distribution has a thermal-like transverse distribution and a rapidity plateau structure. We also find that the parton-parton scattering between the jet parton and the medium parton involves the exchange of a nonperturbative pomeron, for jet partons in momentum range considered in the near-side ridge measurements.
C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
RP Wong, CY (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
EM wongc@ornl.gov
OI Wong, Cheuk-Yin/0000-0001-8223-0659
FU US Department of Energy [DE-AC05-00OR22725]
FX The author thanks Drs. Vince Cianciolo, Fuqiang Wang, Jiangyong Jia, and
Chin-hao Chen for helpful discussions and communications. This research
was supported in part by the Division of Nuclear Physics, US Department
of Energy, under Contract No. DE-AC05-00OR22725, managed by UT-Battelle,
LLC.
NR 134
TC 11
Z9 11
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2469-9985
EI 2469-9993
J9 PHYS REV C
JI Phys. Rev. C
PD SEP
PY 2009
VL 80
IS 3
AR 034908
DI 10.1103/PhysRevC.80.034908
PG 15
WC Physics, Nuclear
SC Physics
GA 501LO
UT WOS:000270383600070
ER
PT J
AU Aaltonen, T
Adelman, J
Akimoto, T
Albrow, MG
Gonzalez, BA
Amerio, S
Amidei, D
Anastassov, A
Annovi, A
Antos, J
Aoki, M
Apollinari, G
Apresyan, A
Arisawa, T
Artikov, A
Ashmanskas, W
Attal, A
Aurisano, A
Azfar, F
Azzi-Bacchetta, P
Azzurri, P
Bacchetta, N
Badgett, W
Barbaro-Galtieri, A
Barnes, VE
Barnett, BA
Baroiant, S
Bartsch, V
Bauer, G
Beauchemin, PH
Bedeschi, F
Bednar, P
Behari, S
Bellettini, G
Bellinger, J
Belloni, A
Benjamin, D
Beretvas, A
Beringer, J
Berry, T
Bhatti, A
Binkley, M
Bisello, D
Bizjak, I
Blair, RE
Blocker, C
Blumenfeld, B
Bocci, A
Bodek, A
Boisvert, V
Bolla, G
Bolshov, A
Bortoletto, D
Boudreau, J
Boveia, A
Brau, B
Bridgeman, A
Brigliadori, L
Bromberg, C
Brubaker, E
Budagov, J
Budd, HS
Budd, S
Burkett, K
Busetto, G
Bussey, P
Buzatu, A
Byrum, KL
Cabrera, S
Campanelli, M
Campbell, M
Canelli, F
Canepa, A
Carlsmith, D
Carosi, R
Carrillo, S
Carron, S
Casal, B
Casarsa, M
Castro, A
Catastini, P
Cauz, D
Cavalli-Sforza, M
Cerri, A
Cerrito, L
Chang, SH
Chen, YC
Chertok, M
Chiarelli, G
Chlachidze, G
Chlebana, F
Cho, K
Chokheli, D
Chou, JP
Choudalakis, G
Chuang, SH
Chung, K
Chung, WH
Chung, YS
Ciobanu, CI
Ciocci, MA
Clark, A
Clark, D
Compostella, G
Convery, ME
Conway, J
Cooper, B
Copic, K
Cordelli, M
Cortiana, G
Crescioli, F
Almenar, CC
Cuevas, J
Culbertson, R
Cully, JC
Dagenhart, D
Datta, M
Davies, T
de Barbaro, P
De Cecco, S
Deisher, A
De Lentdecker, G
De Lorenzo, G
Dell'Orso, M
Demortier, L
Deng, J
Deninno, M
De Pedis, D
Derwent, PF
Di Giovanni, GP
Dionisi, C
Di Ruzza, B
Dittmann, JR
D'Onofrio, M
Donati, S
Dong, P
Donini, J
Dorigo, T
Dube, S
Efron, J
Erbacher, R
Errede, D
Errede, S
Eusebi, R
Fang, HC
Farrington, S
Fedorko, WT
Feild, RG
Feindt, M
Fernandez, JP
Ferrazza, C
Field, R
Flanagan, G
Forrest, R
Forrester, S
Franklin, M
Freeman, JC
Furic, I
Gallinaro, M
Galyardt, J
Garberson, F
Garcia, JE
Garfinkel, AF
Genser, K
Gerberich, H
Gerdes, D
Giagu, S
Giakoumopolou, V
Giannetti, P
Gibson, K
Gimmell, JL
Ginsburg, CM
Giokaris, N
Giordani, M
Giromini, P
Giunta, M
Glagolev, V
Glenzinski, D
Gold, M
Goldschmidt, N
Golossanov, A
Gomez, G
Gomez-Ceballos, G
Goncharov, M
Gonzalez, O
Gorelov, I
Goshaw, AT
Goulianos, K
Gresele, A
Grinstein, S
Grosso-Pilcher, C
Group, RC
Grundler, U
da Costa, JG
Gunay-Unalan, Z
Haber, C
Hahn, K
Hahn, SR
Halkiadakis, E
Hamilton, A
Han, BY
Han, JY
Handler, R
Happacher, F
Hara, K
Hare, D
Hare, M
Harper, S
Harr, RF
Harris, RM
Hartz, M
Hatakeyama, K
Hauser, J
Hays, C
Heck, M
Heijboer, A
Heinemann, B
Heinrich, J
Henderson, C
Herndon, M
Heuser, J
Hewamanage, S
Hidas, D
Hill, CS
Hirschbuehl, D
Hocker, A
Hou, S
Houlden, M
Hsu, SC
Huffman, BT
Hughes, RE
Husemann, U
Huston, J
Incandela, J
Introzzi, G
Iori, M
Ivanov, A
Iyutin, B
James, E
Jayatilaka, B
Jeans, D
Jeon, EJ
Jindariani, S
Johnson, W
Jones, M
Joo, KK
Jun, SY
Jung, JE
Junk, TR
Kamon, T
Kar, D
Karchin, PE
Kato, Y
Kephart, R
Kerzel, U
Khotilovich, V
Kilminster, B
Kim, DH
Kim, HS
Kim, JE
Kim, MJ
Kim, SB
Kim, SH
Kim, YK
Kimura, N
Kirsch, L
Klimenko, S
Klute, M
Knuteson, B
Ko, BR
Koay, SA
Kondo, K
Kong, DJ
Konigsberg, J
Korytov, A
Kotwal, AV
Kraus, J
Kreps, M
Kroll, J
Krumnack, N
Kruse, M
Krutelyov, V
Kubo, T
Kuhlmann, SE
Kuhr, T
Kulkarni, NP
Kusakabe, Y
Kwang, S
Laasanen, AT
Lai, S
Lami, S
Lammel, S
Lancaster, M
Lander, RL
Lannon, K
Lath, A
Latino, G
Lazzizzera, I
LeCompte, T
Lee, J
Lee, J
Lee, YJ
Lee, SW
Lefevre, R
Leonardo, N
Leone, S
Levy, S
Lewis, JD
Lin, C
Lin, CS
Linacre, J
Lindgren, M
Lipeles, E
Lister, A
Litvintsev, DO
Liu, T
Lockyer, NS
Loginov, A
Loreti, M
Lovas, L
Lu, RS
Lucchesi, D
Lueck, J
Luci, C
Lujan, P
Lukens, P
Lungu, G
Lyons, L
Lys, J
Lysak, R
Lytken, E
Mack, P
MacQueen, D
Madrak, R
Maeshima, K
Makhoul, K
Maki, T
Maksimovic, P
Malde, S
Malik, S
Manca, G
Manousakis, A
Margaroli, F
Marino, C
Marino, CP
Martin, A
Martin, M
Martin, V
Martinez, M
Martinez-Ballarin, R
Maruyama, T
Mastrandrea, P
Masubuchi, T
Mattson, ME
Mazzanti, P
McFarland, KS
McIntyre, P
McNulty, R
Mehta, A
Mehtala, P
Menzemer, S
Menzione, A
Merkel, P
Mesropian, C
Messina, A
Miao, T
Miladinovic, N
Miles, J
Miller, R
Mills, C
Milnik, M
Mitra, A
Mitselmakher, G
Miyake, H
Moed, S
Moggi, N
Moon, CS
Moore, R
Morello, MJ
Fernandez, PM
Mulmenstadt, J
Mukherjee, A
Muller, T
Mumford, R
Murat, P
Mussini, M
Nachtman, J
Nagai, Y
Nagano, A
Naganoma, J
Nakamura, K
Nakano, I
Napier, A
Necula, V
Neu, C
Neubauer, MS
Nielsen, J
Nodulman, L
Norman, M
Norniella, O
Nurse, E
Oh, SH
Oh, YD
Oksuzian, I
Okusawa, T
Oldeman, R
Orava, R
Osterberg, K
Griso, SP
Pagliarone, C
Palencia, E
Papadimitriou, V
Papaikonomou, A
Paramonov, AA
Parks, B
Pashapour, S
Patrick, J
Pauletta, G
Paulini, M
Paus, C
Pellett, DE
Penzo, A
Phillips, TJ
Piacentino, G
Piedra, J
Pinera, L
Pitts, K
Plager, C
Pondrom, L
Portell, X
Poukhov, O
Pounder, N
Prakoshyn, F
Pronko, A
Proudfoot, J
Ptohos, F
Punzi, G
Pursley, J
Rademacker, J
Rahaman, A
Ramakrishnan, V
Ranjan, N
Redondo, I
Reisert, B
Rekovic, V
Renton, P
Rescigno, M
Richter, S
Rimondi, F
Ristori, L
Robson, A
Rodrigo, T
Rogers, E
Rolli, S
Roser, R
Rossi, M
Rossin, R
Roy, P
Ruiz, A
Russ, J
Rusu, V
Saarikko, H
Safonov, A
Sakumoto, WK
Salamanna, G
Salto, O
Santi, L
Sarkar, S
Sartori, L
Sato, K
Savoy-Navarro, A
Scheidle, T
Schlabach, P
Schmidt, EE
Schmidt, MA
Schmidt, MP
Schmitt, M
Schwarz, T
Scodellaro, L
Scott, AL
Scribano, A
Scuri, F
Sedov, A
Seidel, S
Seiya, Y
Semenov, A
Sexton-Kennedy, L
Sfyrla, A
Shalhout, SZ
Shapiro, MD
Shears, T
Shepard, PF
Sherman, D
Shimojima, M
Shochet, M
Shon, Y
Shreyber, I
Sidoti, A
Sinervo, P
Sisakyan, A
Slaughter, AJ
Slaunwhite, J
Sliwa, K
Smith, JR
Snider, FD
Snihur, R
Soderberg, M
Soha, A
Somalwar, S
Sorin, V
Spalding, J
Spinella, F
Spreitzer, T
Squillacioti, P
Stanitzki, M
Denis, RS
Stelzer, B
Stelzer-Chilton, O
Stentz, D
Strologas, J
Stuart, D
Suh, JS
Sukhanov, A
Sun, H
Suslov, I
Suzuki, T
Taffard, A
Takashima, R
Takeuchi, Y
Tanaka, R
Tecchio, M
Teng, PK
Terashi, K
Thom, J
Thompson, AS
Thompson, GA
Thomson, E
Tipton, P
Tiwari, V
Tkaczyk, S
Toback, D
Tokar, S
Tollefson, K
Tomura, T
Tonelli, D
Torre, S
Torretta, D
Tourneur, S
Trischuk, W
Tu, Y
Turini, N
Ukegawa, F
Uozumi, S
Vallecorsa, S
van Remortel, N
Varganov, A
Vataga, E
Vazquez, F
Velev, G
Vellidis, C
Veszpremi, V
Vidal, M
Vidal, R
Vila, I
Vilar, R
Vine, T
Vogel, M
Volobouev, I
Volpi, G
Wurthwein, F
Wagner, P
Wagner, RG
Wagner, RL
Wagner-Kuhr, J
Wagner, W
Wakisaka, T
Wallny, R
Wang, SM
Warburton, A
Waters, D
Weinberger, M
Wester, WC
Whitehouse, B
Whiteson, D
Wicklund, AB
Wicklund, E
Williams, G
Williams, HH
Wilson, P
Winer, BL
Wittich, P
Wolbers, S
Wolfe, C
Wright, T
Wu, X
Wynne, SM
Yagil, A
Yamamoto, K
Yamaoka, J
Yamashita, T
Yang, C
Yang, UK
Yang, YC
Yao, WM
Yeh, GP
Yoh, J
Yorita, K
Yoshida, T
Yu, GB
Yu, I
Yu, SS
Yun, JC
Zanello, L
Zanetti, A
Zaw, I
Zhang, X
Zheng, Y
Zucchelli, S
AF Aaltonen, T.
Adelman, J.
Akimoto, T.
Albrow, M. G.
Gonzalez, B. Alvarez
Amerio, S.
Amidei, D.
Anastassov, A.
Annovi, A.
Antos, J.
Aoki, M.
Apollinari, G.
Apresyan, A.
Arisawa, T.
Artikov, A.
Ashmanskas, W.
Attal, A.
Aurisano, A.
Azfar, F.
Azzi-Bacchetta, P.
Azzurri, P.
Bacchetta, N.
Badgett, W.
Barbaro-Galtieri, A.
Barnes, V. E.
Barnett, B. A.
Baroiant, S.
Bartsch, V.
Bauer, G.
Beauchemin, P. -H.
Bedeschi, F.
Bednar, P.
Behari, S.
Bellettini, G.
Bellinger, J.
Belloni, A.
Benjamin, D.
Beretvas, A.
Beringer, J.
Berry, T.
Bhatti, A.
Binkley, M.
Bisello, D.
Bizjak, I.
Blair, R. E.
Blocker, C.
Blumenfeld, B.
Bocci, A.
Bodek, A.
Boisvert, V.
Bolla, G.
Bolshov, A.
Bortoletto, D.
Boudreau, J.
Boveia, A.
Brau, B.
Bridgeman, A.
Brigliadori, L.
Bromberg, C.
Brubaker, E.
Budagov, J.
Budd, H. S.
Budd, S.
Burkett, K.
Busetto, G.
Bussey, P.
Buzatu, A.
Byrum, K. L.
Cabrera, S.
Campanelli, M.
Campbell, M.
Canelli, F.
Canepa, A.
Carlsmith, D.
Carosi, R.
Carrillo, S.
Carron, S.
Casal, B.
Casarsa, M.
Castro, A.
Catastini, P.
Cauz, D.
Cavalli-Sforza, M.
Cerri, A.
Cerrito, L.
Chang, S. H.
Chen, Y. C.
Chertok, M.
Chiarelli, G.
Chlachidze, G.
Chlebana, F.
Cho, K.
Chokheli, D.
Chou, J. P.
Choudalakis, G.
Chuang, S. H.
Chung, K.
Chung, W. H.
Chung, Y. S.
Ciobanu, C. I.
Ciocci, M. A.
Clark, A.
Clark, D.
Compostella, G.
Convery, M. E.
Conway, J.
Cooper, B.
Copic, K.
Cordelli, M.
Cortiana, G.
Crescioli, F.
Almenar, C. Cuenca
Cuevas, J.
Culbertson, R.
Cully, J. C.
Dagenhart, D.
Datta, M.
Davies, T.
de Barbaro, P.
De Cecco, S.
Deisher, A.
De Lentdecker, G.
De Lorenzo, G.
Dell'Orso, M.
Demortier, L.
Deng, J.
Deninno, M.
De Pedis, D.
Derwent, P. F.
Di Giovanni, G. P.
Dionisi, C.
Di Ruzza, B.
Dittmann, J. R.
D'Onofrio, M.
Donati, S.
Dong, P.
Donini, J.
Dorigo, T.
Dube, S.
Efron, J.
Erbacher, R.
Errede, D.
Errede, S.
Eusebi, R.
Fang, H. C.
Farrington, S.
Fedorko, W. T.
Feild, R. G.
Feindt, M.
Fernandez, J. P.
Ferrazza, C.
Field, R.
Flanagan, G.
Forrest, R.
Forrester, S.
Franklin, M.
Freeman, J. C.
Furic, I.
Gallinaro, M.
Galyardt, J.
Garberson, F.
Garcia, J. E.
Garfinkel, A. F.
Genser, K.
Gerberich, H.
Gerdes, D.
Giagu, S.
Giakoumopolou, V.
Giannetti, P.
Gibson, K.
Gimmell, J. L.
Ginsburg, C. M.
Giokaris, N.
Giordani, M.
Giromini, P.
Giunta, M.
Glagolev, V.
Glenzinski, D.
Gold, M.
Goldschmidt, N.
Golossanov, A.
Gomez, G.
Gomez-Ceballos, G.
Goncharov, M.
Gonzalez, O.
Gorelov, I.
Goshaw, A. T.
Goulianos, K.
Gresele, A.
Grinstein, S.
Grosso-Pilcher, C.
Group, R. C.
Grundler, U.
da Costa, J. Guimaraes
Gunay-Unalan, Z.
Haber, C.
Hahn, K.
Hahn, S. R.
Halkiadakis, E.
Hamilton, A.
Han, B. -Y.
Han, J. Y.
Handler, R.
Happacher, F.
Hara, K.
Hare, D.
Hare, M.
Harper, S.
Harr, R. F.
Harris, R. M.
Hartz, M.
Hatakeyama, K.
Hauser, J.
Hays, C.
Heck, M.
Heijboer, A.
Heinemann, B.
Heinrich, J.
Henderson, C.
Herndon, M.
Heuser, J.
Hewamanage, S.
Hidas, D.
Hill, C. S.
Hirschbuehl, D.
Hocker, A.
Hou, S.
Houlden, M.
Hsu, S. -C.
Huffman, B. T.
Hughes, R. E.
Husemann, U.
Huston, J.
Incandela, J.
Introzzi, G.
Iori, M.
Ivanov, A.
Iyutin, B.
James, E.
Jayatilaka, B.
Jeans, D.
Jeon, E. J.
Jindariani, S.
Johnson, W.
Jones, M.
Joo, K. K.
Jun, S. Y.
Jung, J. E.
Junk, T. R.
Kamon, T.
Kar, D.
Karchin, P. E.
Kato, Y.
Kephart, R.
Kerzel, U.
Khotilovich, V.
Kilminster, B.
Kim, D. H.
Kim, H. S.
Kim, J. E.
Kim, M. J.
Kim, S. B.
Kim, S. H.
Kim, Y. K.
Kimura, N.
Kirsch, L.
Klimenko, S.
Klute, M.
Knuteson, B.
Ko, B. R.
Koay, S. A.
Kondo, K.
Kong, D. J.
Konigsberg, J.
Korytov, A.
Kotwal, A. V.
Kraus, J.
Kreps, M.
Kroll, J.
Krumnack, N.
Kruse, M.
Krutelyov, V.
Kubo, T.
Kuhlmann, S. E.
Kuhr, T.
Kulkarni, N. P.
Kusakabe, Y.
Kwang, S.
Laasanen, A. T.
Lai, S.
Lami, S.
Lammel, S.
Lancaster, M.
Lander, R. L.
Lannon, K.
Lath, A.
Latino, G.
Lazzizzera, I.
LeCompte, T.
Lee, J.
Lee, J.
Lee, Y. J.
Lee, S. W.
Lefevre, R.
Leonardo, N.
Leone, S.
Levy, S.
Lewis, J. D.
Lin, C.
Lin, C. S.
Linacre, J.
Lindgren, M.
Lipeles, E.
Lister, A.
Litvintsev, D. O.
Liu, T.
Lockyer, N. S.
Loginov, A.
Loreti, M.
Lovas, L.
Lu, R. -S.
Lucchesi, D.
Lueck, J.
Luci, C.
Lujan, P.
Lukens, P.
Lungu, G.
Lyons, L.
Lys, J.
Lysak, R.
Lytken, E.
Mack, P.
MacQueen, D.
Madrak, R.
Maeshima, K.
Makhoul, K.
Maki, T.
Maksimovic, P.
Malde, S.
Malik, S.
Manca, G.
Manousakis, A.
Margaroli, F.
Marino, C.
Marino, C. P.
Martin, A.
Martin, M.
Martin, V.
Martinez, M.
Martinez-Ballarin, R.
Maruyama, T.
Mastrandrea, P.
Masubuchi, T.
Mattson, M. E.
Mazzanti, P.
McFarland, K. S.
McIntyre, P.
McNulty, R.
Mehta, A.
Mehtala, P.
Menzemer, S.
Menzione, A.
Merkel, P.
Mesropian, C.
Messina, A.
Miao, T.
Miladinovic, N.
Miles, J.
Miller, R.
Mills, C.
Milnik, M.
Mitra, A.
Mitselmakher, G.
Miyake, H.
Moed, S.
Moggi, N.
Moon, C. S.
Moore, R.
Morello, M. J.
Fernandez, P. Movilla
Mulmenstadt, J.
Mukherjee, A.
Muller, Th.
Mumford, R.
Murat, P.
Mussini, M.
Nachtman, J.
Nagai, Y.
Nagano, A.
Naganoma, J.
Nakamura, K.
Nakano, I.
Napier, A.
Necula, V.
Neu, C.
Neubauer, M. S.
Nielsen, J.
Nodulman, L.
Norman, M.
Norniella, O.
Nurse, E.
Oh, S. H.
Oh, Y. D.
Oksuzian, I.
Okusawa, T.
Oldeman, R.
Orava, R.
Osterberg, K.
Griso, S. Pagan
Pagliarone, C.
Palencia, E.
Papadimitriou, V.
Papaikonomou, A.
Paramonov, A. A.
Parks, B.
Pashapour, S.
Patrick, J.
Pauletta, G.
Paulini, M.
Paus, C.
Pellett, D. E.
Penzo, A.
Phillips, T. J.
Piacentino, G.
Piedra, J.
Pinera, L.
Pitts, K.
Plager, C.
Pondrom, L.
Portell, X.
Poukhov, O.
Pounder, N.
Prakoshyn, F.
Pronko, A.
Proudfoot, J.
Ptohos, F.
Punzi, G.
Pursley, J.
Rademacker, J.
Rahaman, A.
Ramakrishnan, V.
Ranjan, N.
Redondo, I.
Reisert, B.
Rekovic, V.
Renton, P.
Rescigno, M.
Richter, S.
Rimondi, F.
Ristori, L.
Robson, A.
Rodrigo, T.
Rogers, E.
Rolli, S.
Roser, R.
Rossi, M.
Rossin, R.
Roy, P.
Ruiz, A.
Russ, J.
Rusu, V.
Saarikko, H.
Safonov, A.
Sakumoto, W. K.
Salamanna, G.
Salto, O.
Santi, L.
Sarkar, S.
Sartori, L.
Sato, K.
Savoy-Navarro, A.
Scheidle, T.
Schlabach, P.
Schmidt, E. E.
Schmidt, M. A.
Schmidt, M. P.
Schmitt, M.
Schwarz, T.
Scodellaro, L.
Scott, A. L.
Scribano, A.
Scuri, F.
Sedov, A.
Seidel, S.
Seiya, Y.
Semenov, A.
Sexton-Kennedy, L.
Sfyrla, A.
Shalhout, S. Z.
Shapiro, M. D.
Shears, T.
Shepard, P. F.
Sherman, D.
Shimojima, M.
Shochet, M.
Shon, Y.
Shreyber, I.
Sidoti, A.
Sinervo, P.
Sisakyan, A.
Slaughter, A. J.
Slaunwhite, J.
Sliwa, K.
Smith, J. R.
Snider, F. D.
Snihur, R.
Soderberg, M.
Soha, A.
Somalwar, S.
Sorin, V.
Spalding, J.
Spinella, F.
Spreitzer, T.
Squillacioti, P.
Stanitzki, M.
Denis, R. St.
Stelzer, B.
Stelzer-Chilton, O.
Stentz, D.
Strologas, J.
Stuart, D.
Suh, J. S.
Sukhanov, A.
Sun, H.
Suslov, I.
Suzuki, T.
Taffard, A.
Takashima, R.
Takeuchi, Y.
Tanaka, R.
Tecchio, M.
Teng, P. K.
Terashi, K.
Thom, J.
Thompson, A. S.
Thompson, G. A.
Thomson, E.
Tipton, P.
Tiwari, V.
Tkaczyk, S.
Toback, D.
Tokar, S.
Tollefson, K.
Tomura, T.
Tonelli, D.
Torre, S.
Torretta, D.
Tourneur, S.
Trischuk, W.
Tu, Y.
Turini, N.
Ukegawa, F.
Uozumi, S.
Vallecorsa, S.
van Remortel, N.
Varganov, A.
Vataga, E.
Vazquez, F.
Velev, G.
Vellidis, C.
Veszpremi, V.
Vidal, M.
Vidal, R.
Vila, I.
Vilar, R.
Vine, T.
Vogel, M.
Volobouev, I.
Volpi, G.
Wuerthwein, F.
Wagner, P.
Wagner, R. G.
Wagner, R. L.
Wagner-Kuhr, J.
Wagner, W.
Wakisaka, T.
Wallny, R.
Wang, S. M.
Warburton, A.
Waters, D.
Weinberger, M.
Wester, W. C., III
Whitehouse, B.
Whiteson, D.
Wicklund, A. B.
Wicklund, E.
Williams, G.
Williams, H. H.
Wilson, P.
Winer, B. L.
Wittich, P.
Wolbers, S.
Wolfe, C.
Wright, T.
Wu, X.
Wynne, S. M.
Yagil, A.
Yamamoto, K.
Yamaoka, J.
Yamashita, T.
Yang, C.
Yang, U. K.
Yang, Y. C.
Yao, W. M.
Yeh, G. P.
Yoh, J.
Yorita, K.
Yoshida, T.
Yu, G. B.
Yu, I.
Yu, S. S.
Yun, J. C.
Zanello, L.
Zanetti, A.
Zaw, I.
Zhang, X.
Zheng, Y.
Zucchelli, S.
CA CDF Collaboration
TI Search for hadronic decays of W and Z bosons in photon events in
p(p)over-bar collisions at root s=1.96 TeV
SO PHYSICAL REVIEW D
LA English
DT Article
ID SILICON VERTEX DETECTOR; CERN PBARP COLLIDER; GAMMA PRODUCTION; QCD
CORRECTIONS; FERMILAB; COUPLINGS
AB We report on a search for the process p (p) over bar -> gamma + W/Z with W/Z -> q (q) over bar in events containing two jets and a photon at the center-of-mass energy root s 1.96 TeV, using 184 pb(-1) of data collected by the CDF II detector. A neural network event selection has been developed to optimize the rejection of the large QCD production background; it is shown that this method gives a significant improvement in both signal-to-noise ratio and signal sensitivity, as compared with an event selection based on conventional cuts. An upper limit is presented for the gamma + W/Z production cross section with the W and Z decaying hadronically.
C1 [Chen, Y. C.; Hou, S.; Lu, R. -S.; Mitra, A.; Teng, P. K.; Wang, S. M.] Acad Sinica, Inst Phys, Taipei 11529, Taiwan.
[Blair, R. E.; Byrum, K. L.; Kuhlmann, S. E.; LeCompte, T.; Nodulman, L.; Proudfoot, J.; Wagner, R. G.; Wicklund, A. B.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Attal, A.; Cavalli-Sforza, M.; De Lorenzo, G.; D'Onofrio, M.; Martinez, M.; Portell, X.; Salto, O.] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain.
[Dittmann, J. R.; Krumnack, N.] Baylor Univ, Waco, TX 76798 USA.
[Brigliadori, L.; Castro, A.; Deninno, M.; Mazzanti, P.; Moggi, N.; Mussini, M.; Rimondi, F.; Zucchelli, S.] Univ Bologna, Ist Nazl Fis Nucl, I-40127 Bologna, Italy.
[Blocker, C.; Clark, D.; Kirsch, L.; Miladinovic, N.] Brandeis Univ, Waltham, MA 02254 USA.
[Baroiant, S.; Chertok, M.; Conway, J.; Almenar, C. Cuenca; Erbacher, R.; Forrest, R.; Forrester, S.; Ivanov, A.; Johnson, W.; Lander, R. L.; Lister, A.; Pellett, D. E.; Schwarz, T.; Smith, J. R.; Soha, A.] Univ Calif Davis, Davis, CA 95616 USA.
[Dong, P.; Hauser, J.; Plager, C.; Stelzer, B.; Wallny, R.; Zheng, Y.] Univ Calif Los Angeles, Los Angeles, CA 90024 USA.
[Hsu, S. -C.; Lipeles, E.; Norman, M.; Wuerthwein, F.; Yagil, A.] Univ Calif San Diego, San Diego, CA 92093 USA.
[Boveia, A.; Brau, B.; Garberson, F.; Hill, C. S.; Incandela, J.; Koay, S. A.; Krutelyov, V.; Rossin, R.; Scott, A. L.; Stuart, D.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
[Gonzalez, B. Alvarez; Casal, B.; Cuevas, J.; Gomez, G.; Menzemer, S.; Rodrigo, T.; Ruiz, A.; Scodellaro, L.; Vila, I.; Vilar, R.] Univ Cantabria, CSIC, Inst Fis Cantabria, E-39005 Santander, Spain.
[Chung, K.; Galyardt, J.; Jun, S. Y.; Paulini, M.; Russ, J.; Tiwari, V.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
[Adelman, J.; Brubaker, E.; Fedorko, W. T.; Grosso-Pilcher, C.; Kim, Y. K.; Kwang, S.; Levy, S.; Paramonov, A. A.; Schmidt, M. A.; Shochet, M.; Wolfe, C.; Yang, U. K.; Yorita, K.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
[Antos, J.; Bednar, P.; Lovas, L.; Lysak, R.; Tokar, S.] Comenius Univ, Bratislava 84248, Slovakia.
[Antos, J.; Bednar, P.; Lovas, L.; Lysak, R.; Tokar, S.] Inst Expt Phys, Kosice 04001, Slovakia.
[Artikov, A.; Budagov, J.; Chokheli, D.; Giokaris, N.; Glagolev, V.; Manousakis, A.; Poukhov, O.; Prakoshyn, F.; Semenov, A.; Sisakyan, A.; Suslov, I.] Joint Inst Nucl Res, RU-141980 Dubna, Russia.
[Benjamin, D.; Bocci, A.; Cabrera, S.; Deng, J.; Goshaw, A. T.; Hidas, D.; Jayatilaka, B.; Ko, B. R.; Kotwal, A. V.; Kruse, M.; Necula, V.; Oh, S. H.; Phillips, T. J.] Duke Univ, Durham, NC 27708 USA.
[Albrow, M. G.; Apollinari, G.; Ashmanskas, W.; Badgett, W.; Beretvas, A.; Binkley, M.; Burkett, K.; Canelli, F.; Casarsa, M.; Chlachidze, G.; Chlebana, F.; Convery, M. E.; Culbertson, R.; Dagenhart, D.; Datta, M.; Derwent, P. F.; Eusebi, R.; Genser, K.; Ginsburg, C. M.; Glenzinski, D.; Golossanov, A.; Group, R. C.; Hahn, S. R.; Harris, R. M.; Hocker, A.; James, E.; Kephart, R.; Kim, M. J.; Lammel, S.; Lewis, J. D.; Lindgren, M.; Litvintsev, D. O.; Liu, T.; Lukens, P.; Madrak, R.; Maeshima, K.; Miao, T.; Moore, R.; Mukherjee, A.; Murat, P.; Nachtman, J.; Palencia, E.; Papadimitriou, V.; Patrick, J.; Pronko, A.; Ptohos, F.; Reisert, B.; Roser, R.; Rusu, V.; Sato, K.; Schlabach, P.; Schmidt, E. E.; Sexton-Kennedy, L.; Slaughter, A. J.; Snider, F. D.; Spalding, J.; Thom, J.; Tkaczyk, S.; Tonelli, D.; Torretta, D.; Velev, G.; Vidal, R.; Wagner, R. L.; Wester, W. C., III; Wicklund, E.; Wilson, P.; Wittich, P.; Wolbers, S.; Yeh, G. P.; Yoh, J.; Yu, S. S.; Yun, J. C.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Carrillo, S.; Field, R.; Furic, I.; Goldschmidt, N.; Jindariani, S.; Kar, D.; Klimenko, S.; Konigsberg, J.; Korytov, A.; Lungu, G.; Mitselmakher, G.; Oksuzian, I.; Pinera, L.; Sukhanov, A.; Vazquez, F.] Univ Florida, Gainesville, FL 32611 USA.
[Annovi, A.; Cordelli, M.; Giromini, P.; Happacher, F.; Torre, S.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
[Clark, A.; Hamilton, A.; Lefevre, R.; Sfyrla, A.; Shreyber, I.; Vallecorsa, S.; Wu, X.] Univ Geneva, CH-1211 Geneva 4, Switzerland.
[Bussey, P.; Davies, T.; Martin, V.; Robson, A.; Denis, R. St.; Thompson, A. S.] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland.
[Belloni, A.; Chou, J. P.; Franklin, M.; Grinstein, S.; da Costa, J. Guimaraes; Mills, C.; Moed, S.; Sherman, D.; Zaw, I.] Harvard Univ, Cambridge, MA 02138 USA.
[Aaltonen, T.; Maki, T.; Mehtala, P.; Orava, R.; Osterberg, K.; Saarikko, H.; van Remortel, N.] Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland.
[Aaltonen, T.; Maki, T.; Mehtala, P.; Orava, R.; Osterberg, K.; Saarikko, H.; van Remortel, N.] Helsinki Inst Phys, FIN-00014 Helsinki, Finland.
[Aoki, M.; Bridgeman, A.; Budd, S.; Ciobanu, C. I.; Errede, D.; Errede, S.; Gerberich, H.; Grundler, U.; Junk, T. R.; Kraus, J.; Marino, C. P.; Neubauer, M. S.; Norniella, O.; Pitts, K.; Rogers, E.; Taffard, A.; Thompson, G. A.; Zhang, X.] Univ Illinois, Urbana, IL 61801 USA.
[Barnett, B. A.; Behari, S.; Blumenfeld, B.; Maksimovic, P.; Martin, M.; Mumford, R.] Johns Hopkins Univ, Baltimore, MD 21218 USA.
[Feindt, M.; Heck, M.; Heuser, J.; Hirschbuehl, D.; Kerzel, U.; Kreps, M.; Kuhr, T.; Lueck, J.; Mack, P.; Marino, C.; Milnik, M.; Muller, Th.; Papaikonomou, A.; Richter, S.; Scheidle, T.; Wagner-Kuhr, J.; Wagner, W.] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Lee, J.; Lee, Y. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Lee, J.; Lee, Y. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Seoul Natl Univ, Seoul 151742, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Lee, J.; Lee, Y. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Sungkyunkwan Univ, Suwon 440746, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Lee, J.; Lee, Y. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Korea Inst Sci & Technol Informat, Taejon 305806, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Lee, J.; Lee, Y. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Chonnam Natl Univ, Kwangju 500757, South Korea.
[Barbaro-Galtieri, A.; Beringer, J.; Cerri, A.; Deisher, A.; Fang, H. C.; Freeman, J. C.; Haber, C.; Heinemann, B.; Lin, C. S.; Lujan, P.; Lys, J.; Fernandez, P. Movilla; Mulmenstadt, J.; Nielsen, J.; Shapiro, M. D.; Volobouev, I.; Yao, W. M.] Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Berry, T.; Farrington, S.; Houlden, M.; Manca, G.; McNulty, R.; Mehta, A.; Oldeman, R.; Shears, T.; Wynne, S. M.] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England.
[Bartsch, V.; Bizjak, I.; Cerrito, L.; Cooper, B.; Lancaster, M.; Malik, S.; Nurse, E.; Vine, T.; Waters, D.] UCL, London WC1E 6BT, England.
[Fernandez, J. P.; Gonzalez, O.; Martinez-Ballarin, R.; Redondo, I.; Vidal, M.] Ctr Invest Energet Medioambientales & Tecnol, E-28040 Madrid, Spain.
[Bauer, G.; Bolshov, A.; Choudalakis, G.; Gomez-Ceballos, G.; Hahn, K.; Henderson, C.; Iyutin, B.; Klute, M.; Knuteson, B.; Leonardo, N.; Makhoul, K.; Miles, J.; Paus, C.] MIT, Cambridge, MA 02139 USA.
[Beauchemin, P. -H.; Buzatu, A.; Carron, S.; Lai, S.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Spreitzer, T.; Trischuk, W.; Warburton, A.; Williams, G.] McGill Univ, Inst Particle Phys, Montreal, PQ H3A 2T8, Canada.
[Beauchemin, P. -H.; Buzatu, A.; Carron, S.; Lai, S.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Spreitzer, T.; Trischuk, W.; Warburton, A.; Williams, G.] Univ Toronto, Toronto, ON M5S 1A7, Canada.
[Amidei, D.; Campbell, M.; Copic, K.; Cully, J. C.; Gerdes, D.; Soderberg, M.; Tecchio, M.; Varganov, A.; Wright, T.] Univ Michigan, Ann Arbor, MI 48109 USA.
[Bromberg, C.; Campanelli, M.; Gunay-Unalan, Z.; Huston, J.; Messina, A.; Miller, R.; Sorin, V.; Tollefson, K.] Michigan State Univ, E Lansing, MI 48824 USA.
[Gold, M.; Gorelov, I.; Rekovic, V.; Seidel, S.; Strologas, J.; Vataga, E.; Vogel, M.] Univ New Mexico, Albuquerque, NM 87131 USA.
[Schmitt, M.; Stentz, D.] Northwestern Univ, Evanston, IL 60208 USA.
[Efron, J.; Hughes, R. E.; Kilminster, B.; Lannon, K.; Parks, B.; Slaunwhite, J.; Winer, B. L.] Ohio State Univ, Columbus, OH 43210 USA.
[Nakano, I.; Takashima, R.; Tanaka, R.; Yamashita, T.] Okayama Univ, Okayama 7008530, Japan.
[Kato, Y.; Okusawa, T.; Seiya, Y.; Wakisaka, T.; Yamamoto, K.; Yoshida, T.] Osaka City Univ, Osaka 588, Japan.
[Azfar, F.; Harper, S.; Hays, C.; Huffman, B. T.; Linacre, J.; Lyons, L.; Malde, S.; Pounder, N.; Rademacker, J.; Renton, P.; Stelzer-Chilton, O.] Univ Oxford, Oxford OX1 3RH, England.
[Amerio, S.; Azzi-Bacchetta, P.; Bacchetta, N.; Bisello, D.; Busetto, G.; Compostella, G.; Cortiana, G.; Donini, J.; Dorigo, T.; Gresele, A.; Lazzizzera, I.; Loreti, M.; Lucchesi, D.; Griso, S. Pagan] Univ Padua, Ist Nazl Fis Nucl, Sez Padova Trento, I-35131 Padua, Italy.
[Di Giovanni, G. P.; Piedra, J.; Savoy-Navarro, A.; Tourneur, S.] Univ Paris 06, LPNHE, IN2P3 CNRS, UMR7585, F-75252 Paris, France.
[Canepa, A.; Heijboer, A.; Heinrich, J.; Kroll, J.; Lockyer, N. S.; Neu, C.; Thomson, E.; Tu, Y.; Wagner, P.; Whiteson, D.; Williams, H. H.] Univ Penn, Philadelphia, PA 19104 USA.
[Azzurri, P.; Bedeschi, F.; Bellettini, G.; Carosi, R.; Catastini, P.; Chiarelli, G.; Ciocci, M. A.; Crescioli, F.; Dell'Orso, M.; Donati, S.; Ferrazza, C.; Garcia, J. E.; Giakoumopolou, V.; Giannetti, P.; Giunta, M.; Introzzi, G.; Lami, S.; Latino, G.; Leone, S.; Menzione, A.; Morello, M. J.; Pagliarone, C.; Piacentino, G.; Punzi, G.; Ristori, L.; Sartori, L.; Scribano, A.; Scuri, F.; Sidoti, A.; Spinella, F.; Squillacioti, P.; Turini, N.; Vellidis, C.; Volpi, G.] Univ Pisa, Ist Nazl Fis Nucl, I-56127 Pisa, Italy.
[Azzurri, P.; Bedeschi, F.; Bellettini, G.; Carosi, R.; Catastini, P.; Chiarelli, G.; Ciocci, M. A.; Crescioli, F.; Dell'Orso, M.; Donati, S.; Ferrazza, C.; Garcia, J. E.; Giakoumopolou, V.; Giannetti, P.; Giunta, M.; Introzzi, G.; Lami, S.; Latino, G.; Leone, S.; Menzione, A.; Morello, M. J.; Pagliarone, C.; Piacentino, G.; Punzi, G.; Ristori, L.; Sartori, L.; Scribano, A.; Scuri, F.; Sidoti, A.; Spinella, F.; Squillacioti, P.; Turini, N.; Vellidis, C.; Volpi, G.] Univ Siena, Ist Nazl Fis Nucl, I-56127 Pisa, Italy.
[Azzurri, P.; Bedeschi, F.; Bellettini, G.; Carosi, R.; Catastini, P.; Chiarelli, G.; Ciocci, M. A.; Crescioli, F.; Dell'Orso, M.; Donati, S.; Ferrazza, C.; Garcia, J. E.; Giakoumopolou, V.; Giannetti, P.; Giunta, M.; Introzzi, G.; Lami, S.; Latino, G.; Leone, S.; Menzione, A.; Morello, M. J.; Pagliarone, C.; Piacentino, G.; Punzi, G.; Ristori, L.; Sartori, L.; Scribano, A.; Scuri, F.; Sidoti, A.; Spinella, F.; Squillacioti, P.; Turini, N.; Vellidis, C.; Volpi, G.] Univ Scuola Normale Super, Ist Nazl Fis Nucl, I-56127 Pisa, Italy.
[Boudreau, J.; Gibson, K.; Hartz, M.; Rahaman, A.; Shepard, P. F.] Univ Pittsburgh, Pittsburgh, PA 15260 USA.
[Apresyan, A.; Barnes, V. E.; Bolla, G.; Bortoletto, D.; Flanagan, G.; Garfinkel, A. F.; Jones, M.; Laasanen, A. T.; Lytken, E.; Margaroli, F.; Merkel, P.; Ranjan, N.; Sedov, A.; Veszpremi, V.] Purdue Univ, W Lafayette, IN 47907 USA.
[Bodek, A.; Boisvert, V.; Budd, H. S.; Chung, Y. S.; de Barbaro, P.; De Lentdecker, G.; Gimmell, J. L.; Han, B. -Y.; Han, J. Y.; Lee, J.; McFarland, K. S.; Sakumoto, W. K.; Yu, G. B.] Univ Rochester, Rochester, NY 14627 USA.
[Bhatti, A.; Demortier, L.; Gallinaro, M.; Goulianos, K.; Hatakeyama, K.; Mesropian, C.; Terashi, K.] Rockefeller Univ, New York, NY 10021 USA.
[De Cecco, S.; De Pedis, D.; Dionisi, C.; Giagu, S.; Iori, M.; Jeans, D.; Luci, C.; Mastrandrea, P.; Rescigno, M.; Salamanna, G.; Sarkar, S.; Zanello, L.] Univ Roma La Sapienza, Ist Nazl Fis Nucl, Sez Roma 1, I-00185 Rome, Italy.
[Anastassov, A.; Chuang, S. H.; Dube, S.; Halkiadakis, E.; Hare, D.; Lath, A.; Somalwar, S.; Yamaoka, J.] Rutgers State Univ, Piscataway, NJ 08855 USA.
[Aurisano, A.; Goncharov, M.; Kamon, T.; Khotilovich, V.; Lee, S. W.; McIntyre, P.; Safonov, A.; Toback, D.; Weinberger, M.] Texas A&M Univ, College Stn, TX 77843 USA.
[Cauz, D.; Di Ruzza, B.; Giordani, M.; Pauletta, G.; Penzo, A.; Rossi, M.; Santi, L.; Zanetti, A.] Univ Trieste, Ist Nazl Fis Nucl, Udine, Italy.
[Akimoto, T.; Hara, K.; Kim, S. H.; Kimura, N.; Kubo, T.; Maruyama, T.; Masubuchi, T.; Miyake, H.; Nagai, Y.; Nagano, A.; Nakamura, K.; Shimojima, M.; Suzuki, T.; Takeuchi, Y.; Tomura, T.; Ukegawa, F.; Uozumi, S.] Univ Tsukuba, Tsukuba, Ibaraki 305, Japan.
[Hare, M.; Napier, A.; Rolli, S.; Sliwa, K.; Sun, H.; Whitehouse, B.] Tufts Univ, Medford, MA 02155 USA.
[Arisawa, T.; Kondo, K.; Kusakabe, Y.; Naganoma, J.] Waseda Univ, Tokyo 169, Japan.
[Harr, R. F.; Karchin, P. E.; Kulkarni, N. P.; Mattson, M. E.; Shalhout, S. Z.] Wayne State Univ, Detroit, MI 48201 USA.
[Bellinger, J.; Carlsmith, D.; Chung, W. H.; Handler, R.; Herndon, M.; Pondrom, L.; Pursley, J.; Ramakrishnan, V.; Shon, Y.] Univ Wisconsin, Madison, WI 53706 USA.
[Feild, R. G.; Husemann, U.; Lin, C.; Loginov, A.; Martin, A.; Schmidt, M. P.; Stanitzki, M.; Tipton, P.; Yang, C.] Yale Univ, New Haven, CT 06520 USA.
RP Aaltonen, T (reprint author), Acad Sinica, Inst Phys, Taipei 11529, Taiwan.
RI Muelmenstaedt, Johannes/K-2432-2015; Introzzi, Gianluca/K-2497-2015;
Gorelov, Igor/J-9010-2015; Leonardo, Nuno/M-6940-2016; Canelli,
Florencia/O-9693-2016; Moon, Chang-Seong/J-3619-2014; Scodellaro,
Luca/K-9091-2014; Grinstein, Sebastian/N-3988-2014; Paulini,
Manfred/N-7794-2014; Russ, James/P-3092-2014; unalan,
zeynep/C-6660-2015; Lazzizzera, Ignazio/E-9678-2015; Cabrera Urban,
Susana/H-1376-2015; Garcia, Jose /H-6339-2015; ciocci, maria agnese
/I-2153-2015; Cavalli-Sforza, Matteo/H-7102-2015; Chiarelli,
Giorgio/E-8953-2012; Warburton, Andreas/N-8028-2013; Ruiz,
Alberto/E-4473-2011; Robson, Aidan/G-1087-2011; De Cecco,
Sandro/B-1016-2012; Azzi, Patrizia/H-5404-2012; manca,
giulia/I-9264-2012; Kim, Soo-Bong/B-7061-2014; Lysak, Roman/H-2995-2014;
Amerio, Silvia/J-4605-2012; Punzi, Giovanni/J-4947-2012; messina,
andrea/C-2753-2013; Annovi, Alberto/G-6028-2012; Ivanov,
Andrew/A-7982-2013
OI Muelmenstaedt, Johannes/0000-0003-1105-6678; Introzzi,
Gianluca/0000-0002-1314-2580; Gorelov, Igor/0000-0001-5570-0133;
Leonardo, Nuno/0000-0002-9746-4594; Canelli,
Florencia/0000-0001-6361-2117; Moon, Chang-Seong/0000-0001-8229-7829;
Scodellaro, Luca/0000-0002-4974-8330; Grinstein,
Sebastian/0000-0002-6460-8694; Paulini, Manfred/0000-0002-6714-5787;
Russ, James/0000-0001-9856-9155; unalan, zeynep/0000-0003-2570-7611;
Lazzizzera, Ignazio/0000-0001-5092-7531; ciocci, maria agnese
/0000-0003-0002-5462; Chiarelli, Giorgio/0000-0001-9851-4816; Warburton,
Andreas/0000-0002-2298-7315; Ruiz, Alberto/0000-0002-3639-0368; Azzi,
Patrizia/0000-0002-3129-828X; Punzi, Giovanni/0000-0002-8346-9052;
Annovi, Alberto/0000-0002-4649-4398; Ivanov, Andrew/0000-0002-9270-5643
FU U.S. Department of Energy and National Science Foundation; Italian
Istituto Nazionale di Fisica Nucleare; Ministry of Education, Culture,
Sports, Science, and Technology of Japan; Natural Sciences and
Engineering Research Council of Canada; National Science Council of the
Republic of China; Swiss National Science Foundation; A. P. Sloan
Foundation; Bundesministerium fur Bildung und Forschung, Germany; Korean
Science and Engineering Foundation and the Korean Research Foundation;
Science and Technology Facilities Council and the Royal Society, UK;
Institut National de Physique Nucleaire et Physique des Particules/CNRS;
Russian Foundation for Basic Research; Comision Interministerial de
Ciencia y Tecnologia, Spain; European Community's Human Potential
Programme; Slovak RD Agency; Academy of Finland
FX This work was supported by the U.S. Department of Energy and National
Science Foundation; the Italian Istituto Nazionale di Fisica Nucleare;
the Ministry of Education, Culture, Sports, Science, and Technology of
Japan; the Natural Sciences and Engineering Research Council of Canada;
the National Science Council of the Republic of China; the Swiss
National Science Foundation; the A. P. Sloan Foundation; the
Bundesministerium fur Bildung und Forschung, Germany; the Korean Science
and Engineering Foundation and the Korean Research Foundation; the
Science and Technology Facilities Council and the Royal Society, UK; the
Institut National de Physique Nucleaire et Physique des Particules/CNRS;
the Russian Foundation for Basic Research; the Comision Interministerial
de Ciencia y Tecnologia, Spain; the European Community's Human Potential
Programme; the Slovak R&D Agency; and the Academy of Finland.
NR 26
TC 1
Z9 1
U1 1
U2 6
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 5
AR 052011
DI 10.1103/PhysRevD.80.052011
PG 17
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501MB
UT WOS:000270384900022
ER
PT J
AU Aaltonen, T
Adelman, J
Akimoto, T
Gonzalez, BA
Amerio, S
Amidei, D
Anastassov, A
Annovi, A
Antos, J
Apollinari, G
Apresyan, A
Arisawa, T
Artikov, A
Ashmanskas, W
Attal, A
Aurisano, A
Azfar, F
Azzurri, P
Badgett, W
Barbaro-Galtieri, A
Barnes, VE
Barnett, BA
Bartsch, V
Bauer, G
Beauchemin, PH
Bedeschi, F
Beecher, D
Behari, S
Bellettini, G
Bellinger, J
Benjamin, D
Beretvas, A
Beringer, J
Bhatti, A
Binkley, M
Bisello, D
Bizjak, I
Blair, RE
Blocker, C
Blumenfeld, B
Bocci, A
Bodek, A
Boisvert, V
Bolla, G
Bortoletto, D
Boudreau, J
Boveia, A
Brau, B
Bridgeman, A
Brigliadori, L
Bromberg, C
Brubaker, E
Budagov, J
Budd, HS
Budd, S
Burke, S
Burkett, K
Busetto, G
Bussey, P
Buzatu, A
Byrum, KL
Cabrera, S
Calancha, C
Campanelli, M
Campbell, M
Canelli, F
Canepa, A
Carls, B
Carlsmith, D
Carosi, R
Carrillo, S
Carron, S
Casal, B
Casarsa, M
Castro, A
Catastini, P
Cauz, D
Cavaliere, V
Cavalli-Sforza, M
Cerri, A
Cerrito, L
Chang, SH
Chen, YC
Chertok, M
Chiarelli, G
Chlachidze, G
Chlebana, F
Cho, K
Chokheli, D
Chou, JP
Choudalakis, G
Chuang, SH
Chung, K
Chung, WH
Chung, YS
Chwalek, T
Ciobanu, CI
Ciocci, MA
Clark, A
Clark, D
Compostella, G
Convery, ME
Conway, J
Cordelli, M
Cortiana, G
Cox, CA
Cox, DJ
Crescioli, F
Almenar, CC
Cuevas, J
Culbertson, R
Cully, JC
Dagenhart, D
Datta, M
Davies, T
de Barbaro, P
De Cecco, S
Deisher, A
De Lorenzo, G
Dell'Orso, M
Deluca, C
Demortier, L
Deng, J
Deninno, M
Derwent, PF
di Giovanni, GP
Dionisi, C
Di Ruzza, B
Dittmann, JR
D'Onofrio, M
Donati, S
Dong, P
Donini, J
Dorigo, T
Dube, S
Efron, J
Elagin, A
Erbacher, R
Errede, D
Errede, S
Eusebi, R
Fang, HC
Farrington, S
Fedorko, WT
Feild, RG
Feindt, M
Fernandez, JP
Ferrazza, C
Field, R
Flanagan, G
Forrest, R
Frank, MJ
Franklin, M
Freeman, JC
Frisch, HJ
Furic, I
Gallinaro, M
Galyardt, J
Garberson, F
Garcia, JE
Garfinkel, AF
Genser, K
Gerberich, H
Gerdes, D
Gessler, A
Giagu, S
Giakoumopoulou, V
Giannetti, P
Gibson, K
Gimmell, JL
Ginsburg, CM
Giokaris, N
Giordani, M
Giromini, P
Giunta, M
Giurgiu, G
Glagolev, V
Glenzinski, D
Gold, M
Goldschmidt, N
Golossanov, A
Gomez, G
Gomez-Ceballos, G
Goncharov, M
Gonzalez, O
Gorelov, I
Goshaw, AT
Goulianos, K
Gresele, A
Grinstein, S
Grosso-Pilcher, C
Group, RC
Grundler, U
da Costa, JG
Gunay-Unalan, Z
Haber, C
Hahn, K
Hahn, SR
Halkiadakis, E
Han, BY
Han, JY
Happacher, F
Hara, K
Hare, D
Hare, M
Harper, S
Harr, RF
Harris, RM
Hartz, M
Hatakeyama, K
Hays, C
Heck, M
Heijboer, A
Heinrich, J
Henderson, C
Herndon, M
Heuser, J
Hewamanage, S
Hidas, D
Hill, CS
Hirschbuehl, D
Hocker, A
Hou, S
Houlden, M
Hsu, SC
Huffman, BT
Hughes, RE
Husemann, U
Hussein, M
Huston, J
Incandela, J
Introzzi, G
Iori, M
Ivanov, A
James, E
Jang, D
Jayatilaka, B
Jeon, EJ
Jha, MK
Jindariani, S
Johnson, W
Jones, M
Joo, KK
Jun, SY
Jung, JE
Junk, TR
Kamon, T
Kar, D
Karchin, PE
Kato, Y
Kephart, R
Keung, J
Khotilovich, V
Kilminster, B
Kim, DH
Kim, HS
Kim, HW
Kim, JE
Kim, MJ
Kim, SB
Kim, SH
Kim, YK
Kimura, N
Kirsch, L
Klimenko, S
Knuteson, B
Ko, BR
Kondo, K
Kong, DJ
Konigsberg, J
Korytov, A
Kotwal, AV
Kreps, M
Kroll, J
Krop, D
Krumnack, N
Kruse, M
Krutelyov, V
Kubo, T
Kuhr, T
Kulkarni, NP
Kurata, M
Kwang, S
Laasanen, AT
Lami, S
Lammel, S
Lancaster, M
Lander, RL
Lannon, K
Lath, A
Latino, G
Lazzizzera, I
LeCompte, T
Lee, E
Lee, HS
Lee, SW
Leone, S
Lewis, JD
Lin, CS
Linacre, J
Lindgren, M
Lipeles, E
Lister, A
Litvintsev, DO
Liu, C
Liu, T
Lockyer, NS
Loginov, A
Loreti, M
Lovas, L
Lucchesi, D
Luci, C
Lueck, J
Lujan, P
Lukens, P
Lungu, G
Lyons, L
Lys, J
Lysak, R
MacQueen, D
Madrak, R
Maeshima, K
Makhoul, K
Maki, T
Maksimovic, P
Malde, S
Malik, S
Manca, G
Manousakis-Katsikakis, A
Margaroli, F
Marino, C
Marino, CP
Martin, A
Martin, V
Martinez, M
Martinez-Ballarin, R
Maruyama, T
Mastrandrea, P
Masubuchi, T
Mathis, M
Mattson, ME
Mazzanti, P
McFarland, KS
McIntyre, P
McNulty, R
Mehta, A
Mehtala, P
Menzione, A
Merkel, P
Mesropian, C
Miao, T
Miladinovic, N
Miller, R
Mills, C
Milnik, M
Mitra, A
Mitselmakher, G
Miyake, H
Moggi, N
Moon, CS
Moore, R
Morello, MJ
Morlock, J
Fernandez, PM
Mulmenstadt, J
Mukherjee, A
Muller, T
Mumford, R
Murat, P
Mussini, M
Nachtman, J
Nagai, Y
Nagano, A
Naganoma, J
Nakamura, K
Nakano, I
Napier, A
Necula, V
Nett, J
Neu, C
Neubauer, MS
Neubauer, S
Nielsen, J
Nodulman, L
Norman, M
Norniella, O
Nurse, E
Oakes, L
Oh, SH
Oh, YD
Oksuzian, I
Okusawa, T
Orava, R
Osterberg, K
Griso, SP
Palencia, E
Papadimitriou, V
Papaikonomou, A
Paramonov, AA
Parks, B
Pashapour, S
Patrick, J
Pauletta, G
Paulini, M
Paus, C
Peiffer, T
Pellett, DE
Penzo, A
Phillips, TJ
Piacentino, G
Pianori, E
Pinera, L
Pitts, K
Plager, C
Pondrom, L
Poukhov, O
Pounder, N
Prakoshyn, F
Pronko, A
Proudfoot, J
Ptohos, F
Pueschel, E
Punzi, G
Pursley, J
Rademacker, J
Rahaman, A
Ramakrishnan, V
Ranjan, N
Redondo, I
Renton, P
Renz, M
Rescigno, M
Richter, S
Rimondi, F
Ristori, L
Robson, A
Rodrigo, T
Rodriguez, T
Rogers, E
Rolli, S
Roser, R
Rossi, M
Rossin, R
Roy, P
Ruiz, A
Russ, J
Rusu, V
Saarikko, H
Safonov, A
Sakumoto, WK
Salto, O
Santi, L
Sarkar, S
Sartori, L
Sato, K
Savoy-Navarro, A
Schlabach, P
Schmidt, A
Schmidt, EE
Schmidt, MA
Schmidt, MP
Schmitt, M
Schwarz, T
Scodellaro, L
Scribano, A
Scuri, F
Sedov, A
Seidel, S
Seiya, Y
Semenov, A
Sexton-Kennedy, L
Sforza, F
Sfyrla, A
Shalhout, SZ
Shears, T
Shepard, PF
Shimojima, M
Shiraishi, S
Shochet, M
Shon, Y
Shreyber, I
Sidoti, A
Sinervo, P
Sisakyan, A
Slaughter, AJ
Slaunwhite, J
Sliwa, K
Smith, JR
Snider, FD
Snihur, R
Soha, A
Somalwar, S
Sorin, V
Spalding, J
Spreitzer, T
Squillacioti, P
Stanitzki, M
St Denis, R
Stelzer, B
Stelzer-Chilton, O
Stentz, D
Strologas, J
Strycker, GL
Stuart, D
Suh, JS
Sukhanov, A
Suslov, I
Suzuki, T
Taffard, A
Takashima, R
Takeuchi, Y
Tanaka, R
Tecchio, M
Teng, PK
Terashi, K
Thom, J
Thompson, AS
Thompson, GA
Thomson, E
Tipton, P
Ttito-Guzman, P
Tkaczyk, S
Toback, D
Tokar, S
Tollefson, K
Tomura, T
Tonelli, D
Torre, S
Torretta, D
Totaro, P
Tourneur, S
Trovato, M
Tsai, SY
Tu, Y
Turini, N
Ukegawa, F
Vallecorsa, S
van Remortel, N
Varganov, A
Vataga, E
Vazquez, F
Velev, G
Vellidis, C
Vidal, M
Vidal, R
Vila, I
Vilar, R
Vine, T
Vogel, M
Volobouev, I
Volpi, G
Wagner, P
Wagner, RG
Wagner, RL
Wagner, W
Wagner-Kuhr, J
Wakisaka, T
Wallny, R
Wang, SM
Warburton, A
Waters, D
Weinberger, M
Weinelt, J
Wester, WC
Whitehouse, B
Whiteson, D
Wicklund, AB
Wicklund, E
Wilbur, S
Williams, G
Williams, HH
Wilson, P
Winer, BL
Wittich, P
Wolbers, S
Wolfe, C
Wright, T
Wu, X
Wurthwein, F
Xie, S
Yagil, A
Yamamoto, K
Yamaoka, J
Yang, UK
Yang, YC
Yao, WM
Yeh, GP
Yoh, J
Yorita, K
Yoshida, T
Yu, GB
Yu, I
Yu, SS
Yun, JC
Zanello, L
Zanetti, A
Zhang, X
Zheng, Y
Zucchelli, S
AF Aaltonen, T.
Adelman, J.
Akimoto, T.
Alvarez Gonzalez, B.
Amerio, S.
Amidei, D.
Anastassov, A.
Annovi, A.
Antos, J.
Apollinari, G.
Apresyan, A.
Arisawa, T.
Artikov, A.
Ashmanskas, W.
Attal, A.
Aurisano, A.
Azfar, F.
Azzurri, P.
Badgett, W.
Barbaro-Galtieri, A.
Barnes, V. E.
Barnett, B. A.
Bartsch, V.
Bauer, G.
Beauchemin, P. -H.
Bedeschi, F.
Beecher, D.
Behari, S.
Bellettini, G.
Bellinger, J.
Benjamin, D.
Beretvas, A.
Beringer, J.
Bhatti, A.
Binkley, M.
Bisello, D.
Bizjak, I.
Blair, R. E.
Blocker, C.
Blumenfeld, B.
Bocci, A.
Bodek, A.
Boisvert, V.
Bolla, G.
Bortoletto, D.
Boudreau, J.
Boveia, A.
Brau, B.
Bridgeman, A.
Brigliadori, L.
Bromberg, C.
Brubaker, E.
Budagov, J.
Budd, H. S.
Budd, S.
Burke, S.
Burkett, K.
Busetto, G.
Bussey, P.
Buzatu, A.
Byrum, K. L.
Cabrera, S.
Calancha, C.
Campanelli, M.
Campbell, M.
Canelli, F.
Canepa, A.
Carls, B.
Carlsmith, D.
Carosi, R.
Carrillo, S.
Carron, S.
Casal, B.
Casarsa, M.
Castro, A.
Catastini, P.
Cauz, D.
Cavaliere, V.
Cavalli-Sforza, M.
Cerri, A.
Cerrito, L.
Chang, S. H.
Chen, Y. C.
Chertok, M.
Chiarelli, G.
Chlachidze, G.
Chlebana, F.
Cho, K.
Chokheli, D.
Chou, J. P.
Choudalakis, G.
Chuang, S. H.
Chung, K.
Chung, W. H.
Chung, Y. S.
Chwalek, T.
Ciobanu, C. I.
Ciocci, M. A.
Clark, A.
Clark, D.
Compostella, G.
Convery, M. E.
Conway, J.
Cordelli, M.
Cortiana, G.
Cox, C. A.
Cox, D. J.
Crescioli, F.
Almenar, C. Cuenca
Cuevas, J.
Culbertson, R.
Cully, J. C.
Dagenhart, D.
Datta, M.
Davies, T.
de Barbaro, P.
De Cecco, S.
Deisher, A.
De Lorenzo, G.
Dell'Orso, M.
Deluca, C.
Demortier, L.
Deng, J.
Deninno, M.
Derwent, P. F.
di Giovanni, G. P.
Dionisi, C.
Di Ruzza, B.
Dittmann, J. R.
D'Onofrio, M.
Donati, S.
Dong, P.
Donini, J.
Dorigo, T.
Dube, S.
Efron, J.
Elagin, A.
Erbacher, R.
Errede, D.
Errede, S.
Eusebi, R.
Fang, H. C.
Farrington, S.
Fedorko, W. T.
Feild, R. G.
Feindt, M.
Fernandez, J. P.
Ferrazza, C.
Field, R.
Flanagan, G.
Forrest, R.
Frank, M. J.
Franklin, M.
Freeman, J. C.
Frisch, H. J.
Furic, I.
Gallinaro, M.
Galyardt, J.
Garberson, F.
Garcia, J. E.
Garfinkel, A. F.
Genser, K.
Gerberich, H.
Gerdes, D.
Gessler, A.
Giagu, S.
Giakoumopoulou, V.
Giannetti, P.
Gibson, K.
Gimmell, J. L.
Ginsburg, C. M.
Giokaris, N.
Giordani, M.
Giromini, P.
Giunta, M.
Giurgiu, G.
Glagolev, V.
Glenzinski, D.
Gold, M.
Goldschmidt, N.
Golossanov, A.
Gomez, G.
Gomez-Ceballos, G.
Goncharov, M.
Gonzalez, O.
Gorelov, I.
Goshaw, A. T.
Goulianos, K.
Gresele, A.
Grinstein, S.
Grosso-Pilcher, C.
Group, R. C.
Grundler, U.
da Costa, J. Guimaraes
Gunay-Unalan, Z.
Haber, C.
Hahn, K.
Hahn, S. R.
Halkiadakis, E.
Han, B. -Y.
Han, J. Y.
Happacher, F.
Hara, K.
Hare, D.
Hare, M.
Harper, S.
Harr, R. F.
Harris, R. M.
Hartz, M.
Hatakeyama, K.
Hays, C.
Heck, M.
Heijboer, A.
Heinrich, J.
Henderson, C.
Herndon, M.
Heuser, J.
Hewamanage, S.
Hidas, D.
Hill, C. S.
Hirschbuehl, D.
Hocker, A.
Hou, S.
Houlden, M.
Hsu, S. -C.
Huffman, B. T.
Hughes, R. E.
Husemann, U.
Hussein, M.
Huston, J.
Incandela, J.
Introzzi, G.
Iori, M.
Ivanov, A.
James, E.
Jang, D.
Jayatilaka, B.
Jeon, E. J.
Jha, M. K.
Jindariani, S.
Johnson, W.
Jones, M.
Joo, K. K.
Jun, S. Y.
Jung, J. E.
Junk, T. R.
Kamon, T.
Kar, D.
Karchin, P. E.
Kato, Y.
Kephart, R.
Keung, J.
Khotilovich, V.
Kilminster, B.
Kim, D. H.
Kim, H. S.
Kim, H. W.
Kim, J. E.
Kim, M. J.
Kim, S. B.
Kim, S. H.
Kim, Y. K.
Kimura, N.
Kirsch, L.
Klimenko, S.
Knuteson, B.
Ko, B. R.
Kondo, K.
Kong, D. J.
Konigsberg, J.
Korytov, A.
Kotwal, A. V.
Kreps, M.
Kroll, J.
Krop, D.
Krumnack, N.
Kruse, M.
Krutelyov, V.
Kubo, T.
Kuhr, T.
Kulkarni, N. P.
Kurata, M.
Kwang, S.
Laasanen, A. T.
Lami, S.
Lammel, S.
Lancaster, M.
Lander, R. L.
Lannon, K.
Lath, A.
Latino, G.
Lazzizzera, I.
LeCompte, T.
Lee, E.
Lee, H. S.
Lee, S. W.
Leone, S.
Lewis, J. D.
Lin, C. -S.
Linacre, J.
Lindgren, M.
Lipeles, E.
Lister, A.
Litvintsev, D. O.
Liu, C.
Liu, T.
Lockyer, N. S.
Loginov, A.
Loreti, M.
Lovas, L.
Lucchesi, D.
Luci, C.
Lueck, J.
Lujan, P.
Lukens, P.
Lungu, G.
Lyons, L.
Lys, J.
Lysak, R.
MacQueen, D.
Madrak, R.
Maeshima, K.
Makhoul, K.
Maki, T.
Maksimovic, P.
Malde, S.
Malik, S.
Manca, G.
Manousakis-Katsikakis, A.
Margaroli, F.
Marino, C.
Marino, C. P.
Martin, A.
Martin, V.
Martinez, M.
Martinez-Ballarin, R.
Maruyama, T.
Mastrandrea, P.
Masubuchi, T.
Mathis, M.
Mattson, M. E.
Mazzanti, P.
McFarland, K. S.
McIntyre, P.
McNulty, R.
Mehta, A.
Mehtala, P.
Menzione, A.
Merkel, P.
Mesropian, C.
Miao, T.
Miladinovic, N.
Miller, R.
Mills, C.
Milnik, M.
Mitra, A.
Mitselmakher, G.
Miyake, H.
Moggi, N.
Moon, C. S.
Moore, R.
Morello, M. J.
Morlock, J.
Fernandez, P. Movilla
Mulmenstadt, J.
Mukherjee, A.
Muller, Th.
Mumford, R.
Murat, P.
Mussini, M.
Nachtman, J.
Nagai, Y.
Nagano, A.
Naganoma, J.
Nakamura, K.
Nakano, I.
Napier, A.
Necula, V.
Nett, J.
Neu, C.
Neubauer, M. S.
Neubauer, S.
Nielsen, J.
Nodulman, L.
Norman, M.
Norniella, O.
Nurse, E.
Oakes, L.
Oh, S. H.
Oh, Y. D.
Oksuzian, I.
Okusawa, T.
Orava, R.
Osterberg, K.
Griso, S. Pagan
Palencia, E.
Papadimitriou, V.
Papaikonomou, A.
Paramonov, A. A.
Parks, B.
Pashapour, S.
Patrick, J.
Pauletta, G.
Paulini, M.
Paus, C.
Peiffer, T.
Pellett, D. E.
Penzo, A.
Phillips, T. J.
Piacentino, G.
Pianori, E.
Pinera, L.
Pitts, K.
Plager, C.
Pondrom, L.
Poukhov, O.
Pounder, N.
Prakoshyn, F.
Pronko, A.
Proudfoot, J.
Ptohos, F.
Pueschel, E.
Punzi, G.
Pursley, J.
Rademacker, J.
Rahaman, A.
Ramakrishnan, V.
Ranjan, N.
Redondo, I.
Renton, P.
Renz, M.
Rescigno, M.
Richter, S.
Rimondi, F.
Ristori, L.
Robson, A.
Rodrigo, T.
Rodriguez, T.
Rogers, E.
Rolli, S.
Roser, R.
Rossi, M.
Rossin, R.
Roy, P.
Ruiz, A.
Russ, J.
Rusu, V.
Saarikko, H.
Safonov, A.
Sakumoto, W. K.
Salto, O.
Santi, L.
Sarkar, S.
Sartori, L.
Sato, K.
Savoy-Navarro, A.
Schlabach, P.
Schmidt, A.
Schmidt, E. E.
Schmidt, M. A.
Schmidt, M. P.
Schmitt, M.
Schwarz, T.
Scodellaro, L.
Scribano, A.
Scuri, F.
Sedov, A.
Seidel, S.
Seiya, Y.
Semenov, A.
Sexton-Kennedy, L.
Sforza, F.
Sfyrla, A.
Shalhout, S. Z.
Shears, T.
Shepard, P. F.
Shimojima, M.
Shiraishi, S.
Shochet, M.
Shon, Y.
Shreyber, I.
Sidoti, A.
Sinervo, P.
Sisakyan, A.
Slaughter, A. J.
Slaunwhite, J.
Sliwa, K.
Smith, J. R.
Snider, F. D.
Snihur, R.
Soha, A.
Somalwar, S.
Sorin, V.
Spalding, J.
Spreitzer, T.
Squillacioti, P.
Stanitzki, M.
St Denis, R.
Stelzer, B.
Stelzer-Chilton, O.
Stentz, D.
Strologas, J.
Strycker, G. L.
Stuart, D.
Suh, J. S.
Sukhanov, A.
Suslov, I.
Suzuki, T.
Taffard, A.
Takashima, R.
Takeuchi, Y.
Tanaka, R.
Tecchio, M.
Teng, P. K.
Terashi, K.
Thom, J.
Thompson, A. S.
Thompson, G. A.
Thomson, E.
Tipton, P.
Ttito-Guzman, P.
Tkaczyk, S.
Toback, D.
Tokar, S.
Tollefson, K.
Tomura, T.
Tonelli, D.
Torre, S.
Torretta, D.
Totaro, P.
Tourneur, S.
Trovato, M.
Tsai, S. -Y.
Tu, Y.
Turini, N.
Ukegawa, F.
Vallecorsa, S.
van Remortel, N.
Varganov, A.
Vataga, E.
Vazquez, F.
Velev, G.
Vellidis, C.
Vidal, M.
Vidal, R.
Vila, I.
Vilar, R.
Vine, T.
Vogel, M.
Volobouev, I.
Volpi, G.
Wagner, P.
Wagner, R. G.
Wagner, R. L.
Wagner, W.
Wagner-Kuhr, J.
Wakisaka, T.
Wallny, R.
Wang, S. M.
Warburton, A.
Waters, D.
Weinberger, M.
Weinelt, J.
Wester, W. C., III
Whitehouse, B.
Whiteson, D.
Wicklund, A. B.
Wicklund, E.
Wilbur, S.
Williams, G.
Williams, H. H.
Wilson, P.
Winer, B. L.
Wittich, P.
Wolbers, S.
Wolfe, C.
Wright, T.
Wu, X.
Wuerthwein, F.
Xie, S.
Yagil, A.
Yamamoto, K.
Yamaoka, J.
Yang, U. K.
Yang, Y. C.
Yao, W. M.
Yeh, G. P.
Yoh, J.
Yorita, K.
Yoshida, T.
Yu, G. B.
Yu, I.
Yu, S. S.
Yun, J. C.
Zanello, L.
Zanetti, A.
Zhang, X.
Zheng, Y.
Zucchelli, S.
TI Search for anomalous production of events with a photon, jet, b-quark
jet, and missing transverse energy
SO PHYSICAL REVIEW D
LA English
DT Article
ID = 1.8 TEV; P(P)OVER-BAR COLLISIONS; LUMINOSITY MONITOR; PBARP
COLLISIONS; CROSS-SECTION; CDF; DETECTOR; CALORIMETER; PERFORMANCE
AB We present a signature-based search for the anomalous production of events containing a photon, two jets, of which at least one is identified as originating from a b quark, and missing transverse energy ((sic)(T)). The search uses data corresponding to 2.0 fb(-1) of integrated luminosity from p (p) over bar collisions at a center-of-mass energy of root s = 1.96 TeV, collected with the CDF II detector at the Fermilab Tevatron. From 6.697 47 x 10(6) events with a photon candidate with transverse energy E-T > 25 GeV, we find 617 events with (sic)(T) > 25 GeV and two or more jets with E-T > 15 GeV, at least one identified as originating from a b quark, versus an expectation of 607 +/- 113 events. Increasing the requirement on (sic)(T) to 50 GeV, we find 28 events versus an expectation of 30 +/- 11 events. We find no indications of non-standard-model phenomena.
C1 [Aaltonen, T.; Maki, T.; Mehtala, P.; Orava, R.; Osterberg, K.; Saarikko, H.; van Remortel, N.] Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland.
[Aaltonen, T.; Maki, T.; Mehtala, P.; Orava, R.; Osterberg, K.; Saarikko, H.; van Remortel, N.] Helsinki Inst Phys, FIN-00014 Helsinki, Finland.
[Chen, Y. C.; Hou, S.; Martin, V.; Mitra, A.; Teng, P. K.; Thom, J.; Tsai, S. -Y.; Wang, S. M.] Acad Sinica, Inst Phys, Taipei 11529, Taiwan.
[Blair, R. E.; Byrum, K. L.; LeCompte, T.; Nodulman, L.; Proudfoot, J.; Wagner, R. G.; Wicklund, A. B.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Giakoumopoulou, V.; Giokaris, N.; Manousakis-Katsikakis, A.; Vellidis, C.] Univ Athens, GR-15771 Athens, Greece.
[Attal, A.; Cavalli-Sforza, M.; De Lorenzo, G.; Deluca, C.; D'Onofrio, M.; Salto, O.] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain.
[Dittmann, J. R.; Frank, M. J.; Krumnack, N.] Baylor Univ, Waco, TX 76798 USA.
[Castro, A.; Deninno, M.; Jha, M. K.; Mazzanti, P.; Moggi, N.; Mussini, M.; Rimondi, F.; Zucchelli, S.] Ist Nazl Fis Nucl, I-40127 Bologna, Italy.
[Castro, A.; Mussini, M.; Rimondi, F.; Zucchelli, S.] Univ Bologna, I-40127 Bologna, Italy.
[Blocker, C.; Clark, D.; Kirsch, L.; Miladinovic, N.] Brandeis Univ, Waltham, MA 02254 USA.
[Chertok, M.; Conway, J.; Cox, C. A.; Cox, D. J.; Almenar, C. Cuenca; Erbacher, R.; Forrest, R.; Ivanov, A.; Johnson, W.; Lander, R. L.; Lister, A.; Schwarz, T.; Smith, J. R.] Univ Calif Davis, Davis, CA 95616 USA.
[Dong, P.; Plager, C.; Wallny, R.; Zheng, Y.] Univ Calif Los Angeles, Los Angeles, CA 90024 USA.
[Norman, M.; Wuerthwein, F.; Yagil, A.] Univ Calif San Diego, La Jolla, CA 92093 USA.
[Boveia, A.; Brau, B.; Garberson, F.; Hill, C. S.; Incandela, J.; Krutelyov, V.; Rossin, R.; Stuart, D.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
[Alvarez Gonzalez, B.; Casal, B.; Cuevas, J.; Gomez, G.; Rodrigo, T.; Ruiz, A.; Scodellaro, L.; Vila, I.; Vilar, R.] Univ Cantabria, CSIC, Inst Fis Cantabria, E-39005 Santander, Spain.
[Chung, K.; Galyardt, J.; Jang, D.; Jun, S. Y.; Paulini, M.; Pueschel, E.; Russ, J.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
[Adelman, J.; Brubaker, E.; Canelli, F.; Fedorko, W. T.; Frisch, H. J.; Grosso-Pilcher, C.; Kim, Y. K.; Krop, D.; Kwang, S.; Lee, H. S.; Paramonov, A. A.; Schmidt, M. A.; Shiraishi, S.; Shochet, M.; Wilbur, S.; Wolfe, C.; Yang, U. K.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
[Antos, J.; Lovas, L.; Lysak, R.; Tokar, S.] Comenius Univ, Bratislava 84248, Slovakia.
[Antos, J.; Lovas, L.; Lysak, R.; Tokar, S.] Inst Expt Phys, Kosice 04001, Slovakia.
[Artikov, A.; Budagov, J.; Chokheli, D.; Glagolev, V.; Poukhov, O.; Prakoshyn, F.; Semenov, A.; Sisakyan, A.; Suslov, I.] Joint Inst Nucl Res, RU-141980 Dubna, Russia.
[Benjamin, D.; Bocci, A.; Cabrera, S.; Deng, J.; Goshaw, A. T.; Hidas, D.; Jayatilaka, B.; Ko, B. R.; Kotwal, A. V.; Kruse, M.; Necula, V.; Oh, S. H.; Phillips, T. J.; Yamaoka, J.] Duke Univ, Durham, NC 27708 USA.
[Apollinari, G.; Ashmanskas, W.; Badgett, W.; Beretvas, A.; Binkley, M.; Burke, S.; Burkett, K.; Canelli, F.; Casarsa, M.; Chlachidze, G.; Chlebana, F.; Convery, M. E.; Culbertson, R.; Dagenhart, D.; Datta, M.; Derwent, P. F.; Eusebi, R.; Freeman, J. C.; Genser, K.; Ginsburg, C. M.; Glenzinski, D.; Golossanov, A.; Group, R. C.; Hahn, S. R.; Harris, R. M.; Hocker, A.; James, E.; Jindariani, S.; Junk, T. R.; Kephart, R.; Kilminster, B.; Lammel, S.; Lewis, J. D.; Lindgren, M.; Litvintsev, D. O.; Liu, T.; Lukens, P.; Madrak, R.; Maeshima, K.; Miao, T.; Moore, R.; Fernandez, P. Movilla; Mukherjee, A.; Murat, P.; Nachtman, J.; Palencia, E.; Papadimitriou, V.; Patrick, J.; Pronko, A.; Ptohos, F.; Roser, R.; Rusu, V.; Sato, K.; Schlabach, P.; Schmidt, E. E.; Sexton-Kennedy, L.; Slaughter, A. J.; Snider, F. D.; Spalding, J.; Thom, J.; Tkaczyk, S.; Tonelli, D.; Torretta, D.; Velev, G.; Vidal, R.; Wagner, R. L.; Wester, W. C., III; Wicklund, E.; Wilson, P.; Wittich, P.; Wolbers, S.; Yeh, G. P.; Yoh, J.; Yu, S. S.; Yun, J. C.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Carrillo, S.; Field, R.; Furic, I.; Goldschmidt, N.; Kar, D.; Klimenko, S.; Konigsberg, J.; Korytov, A.; Mitselmakher, G.; Oksuzian, I.; Pinera, L.; Sukhanov, A.; Vazquez, F.] Univ Florida, Gainesville, FL 32611 USA.
[Annovi, A.; Cordelli, M.; Giromini, P.; Happacher, F.; Kim, M. J.; Torre, S.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
[Clark, A.; Garcia, J. E.; Vallecorsa, S.; Wu, X.] Univ Geneva, CH-1211 Geneva 4, Switzerland.
[Bussey, P.; Davies, T.; Martin, V.; Robson, A.; St Denis, R.; Thompson, A. S.] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland.
[Chou, J. P.; Franklin, M.; Grinstein, S.; da Costa, J. Guimaraes; Mills, C.] Harvard Univ, Cambridge, MA 02138 USA.
[Bridgeman, A.; Budd, S.; Carls, B.; Errede, D.; Errede, S.; Gerberich, H.; Grundler, U.; Marino, C. P.; Neubauer, M. S.; Norniella, O.; Pitts, K.; Rogers, E.; Sfyrla, A.; Taffard, A.; Thompson, G. A.; Zhang, X.] Univ Illinois, Urbana, IL 61801 USA.
[Barnett, B. A.; Behari, S.; Blumenfeld, B.; Giurgiu, G.; Maksimovic, P.; Mathis, M.; Mumford, R.] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany.
[Chwalek, T.; Feindt, M.; Gessler, A.; Heck, M.; Heuser, J.; Hirschbuehl, D.; Kreps, M.; Kuhr, T.; Lueck, J.; Marino, C.; Milnik, M.; Morlock, J.; Muller, Th.; Neubauer, S.; Papaikonomou, A.; Peiffer, T.; Renz, M.; Richter, S.; Schmidt, A.; Wagner, W.; Wagner-Kuhr, J.; Weinelt, J.] Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Seoul Natl Univ, Seoul 151742, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Sungkyunkwan Univ, Suwon 440746, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Korea Inst Sci & Technol Informat, Taejon 305806, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Chonnam Natl Univ, Kwangju 500757, South Korea.
[Barbaro-Galtieri, A.; Beringer, J.; Cerri, A.; Deisher, A.; Fang, H. C.; Haber, C.; Hsu, S. -C.; Lin, C. -S.; Lujan, P.; Lys, J.; Mulmenstadt, J.; Nielsen, J.; Volobouev, I.; Yao, W. M.] Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Houlden, M.; Manca, G.; McNulty, R.; Mehta, A.; Shears, T.] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England.
[Bartsch, V.; Beecher, D.; Bizjak, I.; Cerrito, L.; Lancaster, M.; Malik, S.; Nurse, E.; Vine, T.; Waters, D.] UCL, London WC1E 6BT, England.
[Calancha, C.; Fernandez, J. P.; Gonzalez, O.; Martinez-Ballarin, R.; Redondo, I.; Ttito-Guzman, P.; Vidal, M.] Ctr Invest Energet Medioambientales & Tecnol, E-28040 Madrid, Spain.
[Bauer, G.; Choudalakis, G.; Gomez-Ceballos, G.; Goncharov, M.; Hahn, K.; Henderson, C.; Knuteson, B.; Makhoul, K.; Paus, C.; Xie, S.] MIT, Cambridge, MA 02139 USA.
[Beauchemin, P. -H.; Buzatu, A.; Carron, S.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Spreitzer, T.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] McGill Univ, Inst Particle Phys, Montreal, PQ H3A 2T8, Canada.
[Beauchemin, P. -H.; Buzatu, A.; Carron, S.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Spreitzer, T.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] Simon Fraser Univ, Burnaby, BC V5A 1S6, Canada.
[Beauchemin, P. -H.; Buzatu, A.; Carron, S.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Spreitzer, T.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] Univ Toronto, Toronto, ON M5S 1A7, Canada.
[Beauchemin, P. -H.; Buzatu, A.; Carron, S.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Spreitzer, T.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] TRIUMF, Vancouver, BC V6T 2A3, Canada.
[Amidei, D.; Campbell, M.; Cully, J. C.; Gerdes, D.; Strycker, G. L.; Tecchio, M.; Varganov, A.; Wright, T.] Univ Michigan, Ann Arbor, MI 48109 USA.
[Bromberg, C.; Campanelli, M.; Gunay-Unalan, Z.; Hussein, M.; Huston, J.; Miller, R.; Sorin, V.; Tollefson, K.] Michigan State Univ, E Lansing, MI 48824 USA.
[Shreyber, I.] Inst Theoret & Expt Phys, Moscow 117259, Russia.
[Gold, M.; Gorelov, I.; Seidel, S.; Strologas, J.; Vogel, M.] Univ New Mexico, Albuquerque, NM 87131 USA.
[Anastassov, A.; Schmitt, M.; Stentz, D.] Northwestern Univ, Evanston, IL 60208 USA.
[Efron, J.; Hughes, R. E.; Lannon, K.; Parks, B.; Slaunwhite, J.; Winer, B. L.] Ohio State Univ, Columbus, OH 43210 USA.
[Nakano, I.; Takashima, R.; Tanaka, R.] Okayama Univ, Okayama 7008530, Japan.
[Kato, Y.; Okusawa, T.; Seiya, Y.; Wakisaka, T.; Yamamoto, K.; Yoshida, T.] Osaka City Univ, Osaka 588, Japan.
[Azfar, F.; Farrington, S.; Harper, S.; Hays, C.; Huffman, B. T.; Linacre, J.; Lyons, L.; Malde, S.; Oakes, L.; Pounder, N.; Rademacker, J.; Renton, P.] Univ Oxford, Oxford OX1 3RH, England.
[Amerio, S.; Bisello, D.; Busetto, G.; Compostella, G.; Cortiana, G.; Donini, J.; Dorigo, T.; Gresele, A.; Lazzizzera, I.; Loreti, M.; Lucchesi, D.; Griso, S. Pagan] Ist Nazl Fis Nucl, Sez Padova Trento, I-35131 Padua, Italy.
[Amerio, S.; Bisello, D.; Busetto, G.; Cortiana, G.; Gresele, A.; Lazzizzera, I.; Loreti, M.; Lucchesi, D.; Griso, S. Pagan] Univ Padua, I-35131 Padua, Italy.
[Ciobanu, C. I.; di Giovanni, G. P.; Savoy-Navarro, A.; Tourneur, S.] Univ Paris 06, LPNHE, IN2P3, CNRS,UMR7585, F-75252 Paris, France.
[Canepa, A.; Heijboer, A.; Heinrich, J.; Keung, J.; Kroll, J.; Lipeles, E.; Lockyer, N. S.; Neu, C.; Pianori, E.; Rodriguez, T.; Thomson, E.; Tu, Y.; Wagner, P.; Whiteson, D.; Williams, H. H.] Univ Penn, Philadelphia, PA 19104 USA.
[Azzurri, P.; Bedeschi, F.; Bellettini, G.; Carosi, R.; Catastini, P.; Cavaliere, V.; Chiarelli, G.; Ciocci, M. A.; Crescioli, F.; Dell'Orso, M.; Donati, S.; Ferrazza, C.; Giannetti, P.; Giunta, M.; Introzzi, G.; Lami, S.; Latino, G.; Menzione, A.; Morello, M. J.; Piacentino, G.; Punzi, G.; Ristori, L.; Sartori, L.; Scribano, A.; Scuri, F.; Sforza, F.; Sidoti, A.; Squillacioti, P.; Trovato, M.; Turini, N.; Vataga, E.; Volpi, G.] Ist Nazl Fis Nucl, I-56127 Pisa, Italy.
[Bellettini, G.; Crescioli, F.; Dell'Orso, M.; Donati, S.; Giunta, M.; Morello, M. J.; Punzi, G.; Squillacioti, P.; Volpi, G.] Univ Pisa, I-56127 Pisa, Italy.
[Catastini, P.; Cavaliere, V.; Ciocci, M. A.; Latino, G.; Scribano, A.; Turini, N.] Univ Siena, I-56127 Pisa, Italy.
[Azzurri, P.; Ferrazza, C.; Vataga, E.] Scuola Normale Super Pisa, I-56127 Pisa, Italy.
[Boudreau, J.; Gibson, K.; Hartz, M.; Liu, C.; Rahaman, A.; Shepard, P. F.] Univ Pittsburgh, Pittsburgh, PA 15260 USA.
[Apresyan, A.; Barnes, V. E.; Bolla, G.; Bortoletto, D.; Flanagan, G.; Garfinkel, A. F.; Jones, M.; Laasanen, A. T.; Margaroli, F.; Merkel, P.; Ranjan, N.; Sedov, A.] Purdue Univ, W Lafayette, IN 47907 USA.
[Bodek, A.; Boisvert, V.; Budd, H. S.; Chung, Y. S.; de Barbaro, P.; Gimmell, J. L.; Han, B. -Y.; Han, J. Y.; McFarland, K. S.; Sakumoto, W. K.; Yu, G. B.] Univ Rochester, Rochester, NY 14627 USA.
RP Aaltonen, T (reprint author), Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland.
RI Gorelov, Igor/J-9010-2015; Canelli, Florencia/O-9693-2016; Chiarelli,
Giorgio/E-8953-2012; Scodellaro, Luca/K-9091-2014; Grinstein,
Sebastian/N-3988-2014; Paulini, Manfred/N-7794-2014; Russ,
James/P-3092-2014; unalan, zeynep/C-6660-2015; Lazzizzera,
Ignazio/E-9678-2015; Cabrera Urban, Susana/H-1376-2015; Garcia, Jose
/H-6339-2015; ciocci, maria agnese /I-2153-2015; Cavalli-Sforza,
Matteo/H-7102-2015; Muelmenstaedt, Johannes/K-2432-2015; Introzzi,
Gianluca/K-2497-2015; Kim, Soo-Bong/B-7061-2014; Ruiz,
Alberto/E-4473-2011; Robson, Aidan/G-1087-2011; De Cecco,
Sandro/B-1016-2012; St.Denis, Richard/C-8997-2012; manca,
giulia/I-9264-2012; Amerio, Silvia/J-4605-2012; Punzi,
Giovanni/J-4947-2012; Annovi, Alberto/G-6028-2012; Ivanov,
Andrew/A-7982-2013; Warburton, Andreas/N-8028-2013; Lysak,
Roman/H-2995-2014; Moon, Chang-Seong/J-3619-2014
OI Casarsa, Massimo/0000-0002-1353-8964; Vidal Marono,
Miguel/0000-0002-2590-5987; Latino, Giuseppe/0000-0002-4098-3502; iori,
maurizio/0000-0002-6349-0380; Lancaster, Mark/0000-0002-8872-7292;
Nielsen, Jason/0000-0002-9175-4419; Jun, Soon Yung/0000-0003-3370-6109;
Toback, David/0000-0003-3457-4144; Hays, Chris/0000-0003-2371-9723;
Gorelov, Igor/0000-0001-5570-0133; Canelli,
Florencia/0000-0001-6361-2117; Lami, Stefano/0000-0001-9492-0147;
Margaroli, Fabrizio/0000-0002-3869-0153; Group,
Robert/0000-0002-4097-5254; Chiarelli, Giorgio/0000-0001-9851-4816;
Giordani, Mario/0000-0002-0792-6039; Scodellaro,
Luca/0000-0002-4974-8330; Grinstein, Sebastian/0000-0002-6460-8694;
Paulini, Manfred/0000-0002-6714-5787; Russ, James/0000-0001-9856-9155;
unalan, zeynep/0000-0003-2570-7611; Lazzizzera,
Ignazio/0000-0001-5092-7531; ciocci, maria agnese /0000-0003-0002-5462;
Muelmenstaedt, Johannes/0000-0003-1105-6678; Introzzi,
Gianluca/0000-0002-1314-2580; Farrington, Sinead/0000-0001-5350-9271;
Robson, Aidan/0000-0002-1659-8284; Gallinaro,
Michele/0000-0003-1261-2277; Torre, Stefano/0000-0002-7565-0118; Turini,
Nicola/0000-0002-9395-5230; Osterberg, Kenneth/0000-0003-4807-0414;
Ruiz, Alberto/0000-0002-3639-0368; Punzi, Giovanni/0000-0002-8346-9052;
Annovi, Alberto/0000-0002-4649-4398; Ivanov, Andrew/0000-0002-9270-5643;
Warburton, Andreas/0000-0002-2298-7315; Moon,
Chang-Seong/0000-0001-8229-7829
FU U.S. Department of Energy and National Science Foundation; Italian
Istituto Nazionale di Fisica Nucleare; Ministry of Education, Culture,
Sports, Science and Technology of Japan; Natural Sciences and
Engineering Research Council of Canada; National Science Council of the
Republic of China; Swiss National Science Foundation; A. P. Sloan
Foundation; Bundesministerium fur Bildung und Forschung, Germany; Korean
Science and Engineering Foundation and the Korean Research Foundation;
Science and Technology Facilities Council and the Royal Society, United
Kingdom; Institut National de Physique Nucleaire et Physique des
Particules/CNRS; Russian Foundation for Basic Research; Ministerio de
Ciencia e Innovacion, and Programa Consolider-Ingenio 2010, Spain;
Slovak RD Agency; Academy of Finland
FX This work was supported by the U.S. Department of Energy and National
Science Foundation; the Italian Istituto Nazionale di Fisica Nucleare;
the Ministry of Education, Culture, Sports, Science and Technology of
Japan; the Natural Sciences and Engineering Research Council of Canada;
the National Science Council of the Republic of China; the Swiss
National Science Foundation; the A. P. Sloan Foundation; the
Bundesministerium fur Bildung und Forschung, Germany; the Korean Science
and Engineering Foundation and the Korean Research Foundation; the
Science and Technology Facilities Council and the Royal Society, United
Kingdom; the Institut National de Physique Nucleaire et Physique des
Particules/CNRS; the Russian Foundation for Basic Research; the
Ministerio de Ciencia e Innovacion, and Programa Consolider-Ingenio
2010, Spain; the Slovak R&D Agency; and the Academy of Finland.
NR 44
TC 5
Z9 5
U1 1
U2 6
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 5
AR 052003
DI 10.1103/PhysRevD.80.052003
PG 14
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501MB
UT WOS:000270384900014
ER
PT J
AU Aaltonen, T
Adelman, J
Akimoto, T
Gonzalez, BA
Amerio, S
Amidei, D
Anastassov, A
Annovi, A
Antos, J
Apollinari, G
Apresyan, A
Arisawa, T
Artikov, A
Ashmanskas, W
Attal, A
Aurisano, A
Azfar, F
Azzurri, P
Badgett, W
Barbaro-Galtieri, A
Barnes, VE
Barnett, BA
Bartsch, V
Bauer, G
Beauchemin, PH
Bedeschi, F
Beecher, D
Behari, S
Bellettini, G
Bellinger, J
Benjamin, D
Beretvas, A
Beringer, J
Bhatti, A
Binkley, M
Bisello, D
Bizjak, I
Blair, RE
Blocker, C
Blumenfeld, B
Bocci, A
Bodek, A
Boisvert, V
Bolla, G
Bortoletto, D
Boudreau, J
Boveia, A
Brau, B
Bridgeman, A
Brigliadori, L
Bromberg, C
Brubaker, E
Budagov, J
Budd, HS
Budd, S
Burke, S
Burkett, K
Busetto, G
Bussey, P
Buzatu, A
Byrum, KL
Cabrera, S
Calancha, C
Campanelli, M
Campbell, M
Canelli, F
Canepa, A
Carls, B
Carlsmith, D
Carosi, R
Carrillo, S
Carron, S
Casal, B
Casarsa, M
Castro, A
Catastini, P
Cauz, D
Cavaliere, V
Cavalli-Sforza, M
Cerri, A
Cerrito, L
Chang, SH
Chen, YC
Chertok, M
Chiarelli, G
Chlachidze, G
Chlebana, F
Cho, K
Chokheli, D
Chou, JP
Choudalakis, G
Chuang, SH
Chung, K
Chung, WH
Chung, YS
Chwalek, T
Ciobanu, CI
Ciocci, MA
Clark, A
Clark, D
Compostella, G
Convery, ME
Conway, J
Cordelli, M
Cortiana, G
Cox, CA
Cox, DJ
Crescioli, F
Almenar, CC
Cuevas, J
Culbertson, R
Cully, JC
Dagenhart, D
Datta, M
Davies, T
de Barbaro, P
De Cecco, S
Deisher, A
De Lorenzo, G
Dell'Orso, M
Deluca, C
Demortier, L
Deng, J
Deninno, M
Derwent, PF
di Giovanni, GP
Dionisi, C
Di Ruzza, B
Dittmann, JR
D'Onofrio, M
Donati, S
Dong, P
Donini, J
Dorigo, T
Dube, S
Efron, J
Elagin, A
Erbacher, R
Errede, D
Errede, S
Eusebi, R
Fang, HC
Farrington, S
Fedorko, WT
Feild, RG
Feindt, M
Fernandez, JP
Ferrazza, C
Field, R
Flanagan, G
Forrest, R
Frank, MJ
Franklin, M
Freeman, JC
Frisch, HJ
Furic, I
Gallinaro, M
Galyardt, J
Garberson, F
Garcia, JE
Garfinkel, AF
Genser, K
Gerberich, H
Gerdes, D
Gessler, A
Giagu, S
Giakoumopoulou, V
Giannetti, P
Gibson, K
Gimmell, JL
Ginsburg, CM
Giokaris, N
Giordani, M
Giromini, P
Giunta, M
Giurgiu, G
Glagolev, V
Glenzinski, D
Gold, M
Goldschmidt, N
Golossanov, A
Gomez, G
Gomez-Ceballos, G
Goncharov, M
Gonzalez, O
Gorelov, I
Goshaw, AT
Goulianos, K
Gresele, A
Grinstein, S
Grosso-Pilcher, C
Group, RC
Grundler, U
da Costa, JG
Gunay-Unalan, Z
Haber, C
Hahn, K
Hahn, SR
Halkiadakis, E
Han, BY
Han, JY
Happacher, F
Hara, K
Hare, D
Hare, M
Harper, S
Harr, RF
Harris, RM
Hartz, M
Hatakeyama, K
Hays, C
Heck, M
Heijboer, A
Heinemann, B
Heinrich, J
Henderson, C
Herndon, M
Heuser, J
Hewamanage, S
Hidas, D
Hill, CS
Hirschbuehl, D
Hocker, A
Hou, S
Houlden, M
Hsu, SC
Huffman, BT
Hughes, RE
Husemann, U
Hussein, M
Huston, J
Incandela, J
Introzzi, G
Iori, M
Ivanov, A
James, E
Jang, D
Jayatilaka, B
Jeon, EJ
Jha, MK
Jindariani, S
Johnson, W
Jones, M
Joo, KK
Jun, SY
Jung, JE
Junk, TR
Kamon, T
Kar, D
Karchin, PE
Kato, Y
Kephart, R
Keung, J
Khotilovich, V
Kilminster, B
Kim, DH
Kim, HS
Kim, HW
Kim, JE
Kim, MJ
Kim, SB
Kim, SH
Kim, YK
Kimura, N
Kirsch, L
Klimenko, S
Knuteson, B
Ko, BR
Kondo, K
Kong, DJ
Konigsberg, J
Korytov, A
Kotwal, AV
Kreps, M
Kroll, J
Krop, D
Krumnack, N
Kruse, M
Krutelyov, V
Kubo, T
Kuhr, T
Kulkarni, NP
Kurata, M
Kwang, S
Laasanen, AT
Lami, S
Lammel, S
Lancaster, M
Lander, RL
Lannon, K
Lath, A
Latino, G
Lazzizzera, I
LeCompte, T
Lee, E
Lee, HS
Lee, SW
Leone, S
Lewis, JD
Lin, CS
Linacre, J
Lindgren, M
Lipeles, E
Lister, A
Litvintsev, DO
Liu, C
Liu, T
Lockyer, NS
Loginov, A
Loreti, M
Lovas, L
Lucchesi, D
Luci, C
Lueck, J
Lujan, P
Lukens, P
Lungu, G
Lyons, L
Lys, J
Lysak, R
MacQueen, D
Madrak, R
Maeshima, K
Makhoul, K
Maki, T
Maksimovic, P
Malde, S
Malik, S
Manca, G
Manousakis-Katsikakis, A
Margaroli, F
Marino, C
Marino, CP
Martin, A
Martin, V
Martinez, M
Martinez-Ballarin, R
Maruyama, T
Mastrandrea, P
Masubuchi, T
Mathis, M
Mattson, ME
Mazzanti, P
McFarland, KS
McIntyre, P
McNulty, R
Mehta, A
Mehtala, P
Menzione, A
Merkel, P
Mesropian, C
Miao, T
Miladinovic, N
Miller, R
Mills, C
Milnik, M
Mitra, A
Mitselmakher, G
Miyake, H
Moggi, N
Moon, CS
Moore, R
Morello, MJ
Morlock, J
Fernandez, PM
Mulmenstadt, J
Mukherjee, A
Muller, T
Mumford, R
Murat, P
Mussini, M
Nachtman, J
Nagai, Y
Nagano, A
Naganoma, J
Nakamura, K
Nakano, I
Napier, A
Necula, V
Nett, J
Neu, C
Neubauer, MS
Neubauer, S
Nielsen, J
Nodulman, L
Norman, M
Norniella, O
Nurse, E
Oakes, L
Oh, SH
Oh, YD
Oksuzian, I
Okusawa, T
Orava, R
Osterberg, K
Griso, SP
Palencia, E
Papadimitriou, V
Papaikonomou, A
Paramonov, AA
Parks, B
Pashapour, S
Patrick, J
Pauletta, G
Paulini, M
Paus, C
Peiffer, T
Pellett, DE
Penzo, A
Phillips, TJ
Piacentino, G
Pianori, E
Pinera, L
Pitts, K
Plager, C
Pondrom, L
Poukhov, O
Pounder, N
Prakoshyn, F
Pronko, A
Proudfoot, J
Ptohos, F
Pueschel, E
Punzi, G
Pursley, J
Rademacker, J
Rahaman, A
Ramakrishnan, V
Ranjan, N
Redondo, I
Renton, P
Renz, M
Rescigno, M
Richter, S
Rimondi, F
Ristori, L
Robson, A
Rodrigo, T
Rodriguez, T
Rogers, E
Rolli, S
Roser, R
Rossi, M
Rossin, R
Roy, P
Ruiz, A
Russ, J
Rusu, V
Rutherford, B
Saarikko, H
Safonov, A
Sakumoto, WK
Salto, O
Santi, L
Sarkar, S
Sartori, L
Sato, K
Savoy-Navarro, A
Schlabach, P
Schmidt, A
Schmidt, EE
Schmidt, MA
Schmidt, MP
Schmitt, M
Schwarz, T
Scodellaro, L
Scribano, A
Scuri, F
Sedov, A
Seidel, S
Seiya, Y
Semenov, A
Sexton-Kennedy, L
Sforza, F
Sfyrla, A
Shalhout, SZ
Shears, T
Shepard, PF
Shimojima, M
Shiraishi, S
Shochet, M
Shon, Y
Shreyber, I
Sidoti, A
Sinervo, P
Sisakyan, A
Slaughter, AJ
Slaunwhite, J
Sliwa, K
Smith, JR
Snider, FD
Snihur, R
Soha, A
Somalwar, S
Sorin, V
Spalding, J
Spreitzer, T
Squillacioti, P
Stanitzki, M
St Denis, R
Stelzer, B
Stelzer-Chilton, O
Stentz, D
Strologas, J
Strycker, GL
Stuart, D
Suh, JS
Sukhanov, A
Suslov, I
Suzuki, T
Taffard, A
Takashima, R
Takeuchi, Y
Tanaka, R
Tecchio, M
Teng, PK
Terashi, K
Thom, J
Thompson, AS
Thompson, GA
Thomson, E
Tipton, P
Ttito-Guzman, P
Tkaczyk, S
Toback, D
Tokar, S
Tollefson, K
Tomura, T
Tonelli, D
Torre, S
Torretta, D
Totaro, P
Tourneur, S
Trovato, M
Tsai, SY
Tu, Y
Turini, N
Ukegawa, F
Vallecorsa, S
van Remortel, N
Varganov, A
Vataga, E
Vazquez, F
Velev, G
Vellidis, C
Vidal, M
Vidal, R
Vila, I
Vilar, R
Vine, T
Vogel, M
Volobouev, I
Volpi, G
Wagner, P
Wagner, RG
Wagner, RL
Wagner, W
Wagner-Kuhr, J
Wakisaka, T
Wallny, R
Wang, SM
Warburton, A
Waters, D
Weinberger, M
Weinelt, J
Wester, WC
Whitehouse, B
Whiteson, D
Wicklund, AB
Wicklund, E
Wilbur, S
Williams, G
Williams, HH
Wilson, P
Winer, BL
Wittich, P
Wolbers, S
Wolfe, C
Wright, T
Wu, X
Wurthwein, F
Xie, S
Yagil, A
Yamamoto, K
Yamaoka, J
Yang, UK
Yang, YC
Yao, WM
Yeh, GP
Yoh, J
Yorita, K
Yoshida, T
Yu, GB
Yu, I
Yu, SS
Yun, JC
Zanello, L
Zanetti, A
Zhang, X
Zheng, Y
Zucchelli, S
AF Aaltonen, T.
Adelman, J.
Akimoto, T.
Alvarez Gonzalez, B.
Amerio, S.
Amidei, D.
Anastassov, A.
Annovi, A.
Antos, J.
Apollinari, G.
Apresyan, A.
Arisawa, T.
Artikov, A.
Ashmanskas, W.
Attal, A.
Aurisano, A.
Azfar, F.
Azzurri, P.
Badgett, W.
Barbaro-Galtieri, A.
Barnes, V. E.
Barnett, B. A.
Bartsch, V.
Bauer, G.
Beauchemin, P. -H.
Bedeschi, F.
Beecher, D.
Behari, S.
Bellettini, G.
Bellinger, J.
Benjamin, D.
Beretvas, A.
Beringer, J.
Bhatti, A.
Binkley, M.
Bisello, D.
Bizjak, I.
Blair, R. E.
Blocker, C.
Blumenfeld, B.
Bocci, A.
Bodek, A.
Boisvert, V.
Bolla, G.
Bortoletto, D.
Boudreau, J.
Boveia, A.
Brau, B.
Bridgeman, A.
Brigliadori, L.
Bromberg, C.
Brubaker, E.
Budagov, J.
Budd, H. S.
Budd, S.
Burke, S.
Burkett, K.
Busetto, G.
Bussey, P.
Buzatu, A.
Byrum, K. L.
Cabrera, S.
Calancha, C.
Campanelli, M.
Campbell, M.
Canelli, F.
Canepa, A.
Carls, B.
Carlsmith, D.
Carosi, R.
Carrillo, S.
Carron, S.
Casal, B.
Casarsa, M.
Castro, A.
Catastini, P.
Cauz, D.
Cavaliere, V.
Cavalli-Sforza, M.
Cerri, A.
Cerrito, L.
Chang, S. H.
Chen, Y. C.
Chertok, M.
Chiarelli, G.
Chlachidze, G.
Chlebana, F.
Cho, K.
Chokheli, D.
Chou, J. P.
Choudalakis, G.
Chuang, S. H.
Chung, K.
Chung, W. H.
Chung, Y. S.
Chwalek, T.
Ciobanu, C. I.
Ciocci, M. A.
Clark, A.
Clark, D.
Compostella, G.
Convery, M. E.
Conway, J.
Cordelli, M.
Cortiana, G.
Cox, C. A.
Cox, D. J.
Crescioli, F.
Almenar, C. Cuenca
Cuevas, J.
Culbertson, R.
Cully, J. C.
Dagenhart, D.
Datta, M.
Davies, T.
de Barbaro, P.
De Cecco, S.
Deisher, A.
De Lorenzo, G.
Dell'Orso, M.
Deluca, C.
Demortier, L.
Deng, J.
Deninno, M.
Derwent, P. F.
di Giovanni, G. P.
Dionisi, C.
Di Ruzza, B.
Dittmann, J. R.
D'Onofrio, M.
Donati, S.
Dong, P.
Donini, J.
Dorigo, T.
Dube, S.
Efron, J.
Elagin, A.
Erbacher, R.
Errede, D.
Errede, S.
Eusebi, R.
Fang, H. C.
Farrington, S.
Fedorko, W. T.
Feild, R. G.
Feindt, M.
Fernandez, J. P.
Ferrazza, C.
Field, R.
Flanagan, G.
Forrest, R.
Frank, M. J.
Franklin, M.
Freeman, J. C.
Frisch, H. J.
Furic, I.
Gallinaro, M.
Galyardt, J.
Garberson, F.
Garcia, J. E.
Garfinkel, A. F.
Genser, K.
Gerberich, H.
Gerdes, D.
Gessler, A.
Giagu, S.
Giakoumopoulou, V.
Giannetti, P.
Gibson, K.
Gimmell, J. L.
Ginsburg, C. M.
Giokaris, N.
Giordani, M.
Giromini, P.
Giunta, M.
Giurgiu, G.
Glagolev, V.
Glenzinski, D.
Gold, M.
Goldschmidt, N.
Golossanov, A.
Gomez, G.
Gomez-Ceballos, G.
Goncharov, M.
Gonzalez, O.
Gorelov, I.
Goshaw, A. T.
Goulianos, K.
Gresele, A.
Grinstein, S.
Grosso-Pilcher, C.
Group, R. C.
Grundler, U.
da Costa, J. Guimaraes
Gunay-Unalan, Z.
Haber, C.
Hahn, K.
Hahn, S. R.
Halkiadakis, E.
Han, B. -Y.
Han, J. Y.
Happacher, F.
Hara, K.
Hare, D.
Hare, M.
Harper, S.
Harr, R. F.
Harris, R. M.
Hartz, M.
Hatakeyama, K.
Hays, C.
Heck, M.
Heijboer, A.
Heinemann, B.
Heinrich, J.
Henderson, C.
Herndon, M.
Heuser, J.
Hewamanage, S.
Hidas, D.
Hill, C. S.
Hirschbuehl, D.
Hocker, A.
Hou, S.
Houlden, M.
Hsu, S. -C.
Huffman, B. T.
Hughes, R. E.
Husemann, U.
Hussein, M.
Huston, J.
Incandela, J.
Introzzi, G.
Iori, M.
Ivanov, A.
James, E.
Jang, D.
Jayatilaka, B.
Jeon, E. J.
Jha, M. K.
Jindariani, S.
Johnson, W.
Jones, M.
Joo, K. K.
Jun, S. Y.
Jung, J. E.
Junk, T. R.
Kamon, T.
Kar, D.
Karchin, P. E.
Kato, Y.
Kephart, R.
Keung, J.
Khotilovich, V.
Kilminster, B.
Kim, D. H.
Kim, H. S.
Kim, H. W.
Kim, J. E.
Kim, M. J.
Kim, S. B.
Kim, S. H.
Kim, Y. K.
Kimura, N.
Kirsch, L.
Klimenko, S.
Knuteson, B.
Ko, B. R.
Kondo, K.
Kong, D. J.
Konigsberg, J.
Korytov, A.
Kotwal, A. V.
Kreps, M.
Kroll, J.
Krop, D.
Krumnack, N.
Kruse, M.
Krutelyov, V.
Kubo, T.
Kuhr, T.
Kulkarni, N. P.
Kurata, M.
Kwang, S.
Laasanen, A. T.
Lami, S.
Lammel, S.
Lancaster, M.
Lander, R. L.
Lannon, K.
Lath, A.
Latino, G.
Lazzizzera, I.
LeCompte, T.
Lee, E.
Lee, H. S.
Lee, S. W.
Leone, S.
Lewis, J. D.
Lin, C. -S.
Linacre, J.
Lindgren, M.
Lipeles, E.
Lister, A.
Litvintsev, D. O.
Liu, C.
Liu, T.
Lockyer, N. S.
Loginov, A.
Loreti, M.
Lovas, L.
Lucchesi, D.
Luci, C.
Lueck, J.
Lujan, P.
Lukens, P.
Lungu, G.
Lyons, L.
Lys, J.
Lysak, R.
MacQueen, D.
Madrak, R.
Maeshima, K.
Makhoul, K.
Maki, T.
Maksimovic, P.
Malde, S.
Malik, S.
Manca, G.
Manousakis-Katsikakis, A.
Margaroli, F.
Marino, C.
Marino, C. P.
Martin, A.
Martin, V.
Martinez, M.
Martinez-Ballarin, R.
Maruyama, T.
Mastrandrea, P.
Masubuchi, T.
Mathis, M.
Mattson, M. E.
Mazzanti, P.
McFarland, K. S.
McIntyre, P.
McNulty, R.
Mehta, A.
Mehtala, P.
Menzione, A.
Merkel, P.
Mesropian, C.
Miao, T.
Miladinovic, N.
Miller, R.
Mills, C.
Milnik, M.
Mitra, A.
Mitselmakher, G.
Miyake, H.
Moggi, N.
Moon, C. S.
Moore, R.
Morello, M. J.
Morlock, J.
Fernandez, P. Movilla
Mulmenstadt, J.
Mukherjee, A.
Muller, Th.
Mumford, R.
Murat, P.
Mussini, M.
Nachtman, J.
Nagai, Y.
Nagano, A.
Naganoma, J.
Nakamura, K.
Nakano, I.
Napier, A.
Necula, V.
Nett, J.
Neu, C.
Neubauer, M. S.
Neubauer, S.
Nielsen, J.
Nodulman, L.
Norman, M.
Norniella, O.
Nurse, E.
Oakes, L.
Oh, S. H.
Oh, Y. D.
Oksuzian, I.
Okusawa, T.
Orava, R.
Osterberg, K.
Griso, S. Pagan
Palencia, E.
Papadimitriou, V.
Papaikonomou, A.
Paramonov, A. A.
Parks, B.
Pashapour, S.
Patrick, J.
Pauletta, G.
Paulini, M.
Paus, C.
Peiffer, T.
Pellett, D. E.
Penzo, A.
Phillips, T. J.
Piacentino, G.
Pianori, E.
Pinera, L.
Pitts, K.
Plager, C.
Pondrom, L.
Poukhov, O.
Pounder, N.
Prakoshyn, F.
Pronko, A.
Proudfoot, J.
Ptohos, F.
Pueschel, E.
Punzi, G.
Pursley, J.
Rademacker, J.
Rahaman, A.
Ramakrishnan, V.
Ranjan, N.
Redondo, I.
Renton, P.
Renz, M.
Rescigno, M.
Richter, S.
Rimondi, F.
Ristori, L.
Robson, A.
Rodrigo, T.
Rodriguez, T.
Rogers, E.
Rolli, S.
Roser, R.
Rossi, M.
Rossin, R.
Roy, P.
Ruiz, A.
Russ, J.
Rusu, V.
Rutherford, B.
Saarikko, H.
Safonov, A.
Sakumoto, W. K.
Salto, O.
Santi, L.
Sarkar, S.
Sartori, L.
Sato, K.
Savoy-Navarro, A.
Schlabach, P.
Schmidt, A.
Schmidt, E. E.
Schmidt, M. A.
Schmidt, M. P.
Schmitt, M.
Schwarz, T.
Scodellaro, L.
Scribano, A.
Scuri, F.
Sedov, A.
Seidel, S.
Seiya, Y.
Semenov, A.
Sexton-Kennedy, L.
Sforza, F.
Sfyrla, A.
Shalhout, S. Z.
Shears, T.
Shepard, P. F.
Shimojima, M.
Shiraishi, S.
Shochet, M.
Shon, Y.
Shreyber, I.
Sidoti, A.
Sinervo, P.
Sisakyan, A.
Slaughter, A. J.
Slaunwhite, J.
Sliwa, K.
Smith, J. R.
Snider, F. D.
Snihur, R.
Soha, A.
Somalwar, S.
Sorin, V.
Spalding, J.
Spreitzer, T.
Squillacioti, P.
Stanitzki, M.
St Denis, R.
Stelzer, B.
Stelzer-Chilton, O.
Stentz, D.
Strologas, J.
Strycker, G. L.
Stuart, D.
Suh, J. S.
Sukhanov, A.
Suslov, I.
Suzuki, T.
Taffard, A.
Takashima, R.
Takeuchi, Y.
Tanaka, R.
Tecchio, M.
Teng, P. K.
Terashi, K.
Thom, J.
Thompson, A. S.
Thompson, G. A.
Thomson, E.
Tipton, P.
Ttito-Guzman, P.
Tkaczyk, S.
Toback, D.
Tokar, S.
Tollefson, K.
Tomura, T.
Tonelli, D.
Torre, S.
Torretta, D.
Totaro, P.
Tourneur, S.
Trovato, M.
Tsai, S. -Y.
Tu, Y.
Turini, N.
Ukegawa, F.
Vallecorsa, S.
van Remortel, N.
Varganov, A.
Vataga, E.
Vazquez, F.
Velev, G.
Vellidis, C.
Vidal, M.
Vidal, R.
Vila, I.
Vilar, R.
Vine, T.
Vogel, M.
Volobouev, I.
Volpi, G.
Wagner, P.
Wagner, R. G.
Wagner, R. L.
Wagner, W.
Wagner-Kuhr, J.
Wakisaka, T.
Wallny, R.
Wang, S. M.
Warburton, A.
Waters, D.
Weinberger, M.
Weinelt, J.
Wester, W. C., III
Whitehouse, B.
Whiteson, D.
Wicklund, A. B.
Wicklund, E.
Wilbur, S.
Williams, G.
Williams, H. H.
Wilson, P.
Winer, B. L.
Wittich, P.
Wolbers, S.
Wolfe, C.
Wright, T.
Wu, X.
Wuerthwein, F.
Xie, S.
Yagil, A.
Yamamoto, K.
Yamaoka, J.
Yang, U. K.
Yang, Y. C.
Yao, W. M.
Yeh, G. P.
Yoh, J.
Yorita, K.
Yoshida, T.
Yu, G. B.
Yu, I.
Yu, S. S.
Yun, J. C.
Zanello, L.
Zanetti, A.
Zhang, X.
Zheng, Y.
Zucchelli, S.
CA CDF Collaboration
TI Search for the neutral current top quark decay t -> Zc using the ratio
of Z-boson+4 jets to W-boson+4 jets production
SO PHYSICAL REVIEW D
LA English
DT Article
ID ELECTROMAGNETIC CALORIMETER; P(P)OVER-BAR COLLISIONS; PBARP COLLISIONS;
CROSS-SECTION; 1.8 TEV; ROOT-S; CDF; DETECTOR; NEUTRINOS; UPGRADE
AB We have used the Collider Detector at Fermilab (CDF-II) to search for the flavor-changing neutral-current (FCNC) top-quark decay t -> Zc using a technique employing ratios of W and Z production, measured in p (p) over bar data corresponding to an integrated luminosity of 1.52 fb(-1). The analysis uses a comparison of two decay chains, p (p) over bar -> t (t) over bar -> WbWb -> l nu bjjb and p (p) over bar -> t (t) over bar -> ZcWb -> llcjjb, to cancel systematic uncertainties in acceptance, efficiency, and luminosity. We validate the modeling of acceptance and efficiency for lepton identification over the multiyear data set using another ratio of W and Z production, in this case the observed ratio of inclusive production of W to Z bosons. To improve the discrimination against standard model backgrounds to top-quark decays, we calculate the top-quark mass for each event with two leptons and four jets assuming it is a t (t) over bar event with one of the top quarks decaying to Zc. For additional background discrimination we require at least one jet to be identified as originating from a b quark. No significant signal is found and we set an upper limit on the FCNC branching ratio Br(t -> Zc) using a likelihood constructed from the llcjjb top-quark mass distribution and the number of l nu bjjb events. Limits are set as a function of the helicity of the Z boson produced in the FCNC decay. For 100% longitudinally-polarized Z bosons we find limits of 8.3% and 9.3% (95% C. L.) depending on the assumptions regarding the theoretical top-quark pair production cross section.
C1 [Aaltonen, T.; Maki, T.; Mehtala, P.; Orava, R.; Osterberg, K.; Saarikko, H.; van Remortel, N.] Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland.
[Aaltonen, T.; Maki, T.; Mehtala, P.; Orava, R.; Osterberg, K.; Saarikko, H.; van Remortel, N.] Helsinki Inst Phys, FIN-00014 Helsinki, Finland.
[Chen, Y. C.; Hou, S.; Martin, V.; Mitra, A.; Teng, P. K.; Tsai, S. -Y.; Wang, S. M.] Acad Sinica, Inst Phys, Taipei 11529, Taiwan.
[Blair, R. E.; Byrum, K. L.; LeCompte, T.; Nodulman, L.; Proudfoot, J.; Wagner, R. G.; Wicklund, A. B.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Giakoumopoulou, V.; Giokaris, N.; Manousakis-Katsikakis, A.; Vellidis, C.] Univ Athens, GR-15771 Athens, Greece.
[Attal, A.; Cavalli-Sforza, M.; De Lorenzo, G.; Deluca, C.; D'Onofrio, M.; Martinez, M.] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain.
[Dittmann, J. R.; Frank, M. J.; Hewamanage, S.; Krumnack, N.] Baylor Univ, Waco, TX 76798 USA.
[Amerio, S.; Castro, A.; Deninno, M.; Jha, M. K.; Mazzanti, P.; Moggi, N.; Mussini, M.; Rimondi, F.; Zucchelli, S.] Ist Nazl Fis Nucl, I-40127 Bologna, Italy.
[Castro, A.; Mussini, M.; Rimondi, F.; Zucchelli, S.] Univ Bologna, I-40127 Bologna, Italy.
[Blocker, C.; Clark, D.; Kirsch, L.; Miladinovic, N.] Brandeis Univ, Waltham, MA 02254 USA.
[Chertok, M.; Conway, J.; Cox, C. A.; Cox, D. J.; Almenar, C. Cuenca; Erbacher, R.; Forrest, R.; Ivanov, A.; Johnson, W.; Lander, R. L.; Lister, A.; Pellett, D. E.; Schwarz, T.; Smith, J. R.; Soha, A.] Univ Calif Davis, Davis, CA 95616 USA.
[Dong, P.; Plager, C.; Wallny, R.; Zheng, Y.] Univ Calif Los Angeles, Los Angeles, CA 90024 USA.
[Norman, M.; Wuerthwein, F.; Yagil, A.; Yamamoto, K.] Univ Calif San Diego, La Jolla, CA 92093 USA.
[Boveia, A.; Brau, B.; Garberson, F.; Hill, C. S.; Incandela, J.; Krutelyov, V.; Rossin, R.; Stuart, D.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
[Alvarez Gonzalez, B.; Casal, B.; Cuevas, J.; Gomez, G.; Rodrigo, T.; Ruiz, A.; Scodellaro, L.; Vila, I.; Vilar, R.] Univ Cantabria, CSIC, Inst Fis Cantabria, E-39005 Santander, Spain.
[Chung, K.; Galyardt, J.; Jang, D.; Jun, S. Y.; Paulini, M.; Pueschel, E.; Russ, J.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
[Adelman, J.; Brubaker, E.; Canelli, F.; Fedorko, W. T.; Frisch, H. J.; Grosso-Pilcher, C.; Kim, Y. K.; Krop, D.; Kwang, S.; Lee, H. S.; Paramonov, A. A.; Schmidt, M. A.; Shiraishi, S.; Shochet, M.; Wilbur, S.; Wolfe, C.; Yang, U. K.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
[Antos, J.; Lovas, L.; Lysak, R.; Tokar, S.] Comenius Univ, Bratislava 84248, Slovakia.
[Antos, J.; Lovas, L.; Lysak, R.; Tokar, S.] Inst Expt Phys, Kosice 04001, Slovakia.
[Artikov, A.; Budagov, J.; Chokheli, D.; Glagolev, V.; Poukhov, O.; Prakoshyn, F.; Semenov, A.; Sisakyan, A.; Suslov, I.] Joint Inst Nucl Res, RU-141980 Dubna, Russia.
[Benjamin, D.; Bocci, A.; Cabrera, S.; Deng, J.; Goshaw, A. T.; Hidas, D.; Jayatilaka, B.; Ko, B. R.; Kotwal, A. V.; Kruse, M.; Necula, V.; Oh, S. H.; Phillips, T. J.; Yamaoka, J.] Duke Univ, Durham, NC 27708 USA.
[Apollinari, G.; Ashmanskas, W.; Badgett, W.; Beretvas, A.; Binkley, M.; Burke, S.; Burkett, K.; Canelli, F.; Casarsa, M.; Chlachidze, G.; Chlebana, F.; Convery, M. E.; Culbertson, R.; Dagenhart, D.; Datta, M.; Derwent, P. F.; Eusebi, R.; Freeman, J. C.; Genser, K.; Ginsburg, C. M.; Glenzinski, D.; Golossanov, A.; Group, R. C.; Hahn, S. R.; Harris, R. M.; Hocker, A.; James, E.; Jindariani, S.; Junk, T. R.; Kephart, R.; Kilminster, B.; Lammel, S.; Lewis, J. D.; Lindgren, M.; Litvintsev, D. O.; Liu, T.; Lukens, P.; Madrak, R.; Maeshima, K.; Miao, T.; Moore, R.; Fernandez, P. Movilla; Mukherjee, A.; Murat, P.; Nachtman, J.; Palencia, E.; Papadimitriou, V.; Patrick, J.; Pronko, A.; Ptohos, F.; Roser, R.; Rusu, V.; Rutherford, B.; Sato, K.; Schlabach, P.; Schmidt, E. E.; Sexton-Kennedy, L.; Slaughter, A. J.; Snider, F. D.; Spalding, J.; Thom, J.; Tkaczyk, S.; Tonelli, D.; Torretta, D.; Velev, G.; Vidal, R.; Wagner, R. L.; Wester, W. C., III; Wicklund, E.; Wilson, P.; Wittich, P.; Wolbers, S.; Yeh, G. P.; Yoh, J.; Yu, S. S.; Yun, J. C.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Carrillo, S.; Field, R.; Furic, I.; Goldschmidt, N.; Kar, D.; Klimenko, S.; Konigsberg, J.; Korytov, A.; Mitselmakher, G.; Oksuzian, I.; Pinera, L.; Sukhanov, A.; Vazquez, F.] Univ Florida, Gainesville, FL 32611 USA.
[Annovi, A.; Cordelli, M.; Giromini, P.; Happacher, F.; Kim, M. J.; Torre, S.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
[Clark, A.; Garcia, J. E.; Vallecorsa, S.; Wu, X.] Univ Geneva, CH-1211 Geneva 4, Switzerland.
[Bussey, P.; Davies, T.; Martin, V.; Robson, A.; St Denis, R.; Thompson, A. S.] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland.
[Chou, J. P.; Franklin, M.; Grinstein, S.; da Costa, J. Guimaraes; Mills, C.] Harvard Univ, Cambridge, MA 02138 USA.
[Bridgeman, A.; Budd, S.; Carls, B.; Errede, D.; Errede, S.; Gerberich, H.; Grundler, U.; Marino, C. P.; Neubauer, M. S.; Norniella, O.; Pitts, K.; Rogers, E.; Sfyrla, A.; Taffard, A.; Thompson, G. A.; Zhang, X.] Univ Illinois, Urbana, IL 61801 USA.
[Barnett, B. A.; Behari, S.; Blumenfeld, B.; Giurgiu, G.; Maksimovic, P.; Mathis, M.; Mumford, R.] Johns Hopkins Univ, Baltimore, MD 21218 USA.
[Chwalek, T.; Feindt, M.; Gessler, A.; Heck, M.; Heuser, J.; Hirschbuehl, D.; Kreps, M.; Kuhr, T.; Lueck, J.; Marino, C.; Milnik, M.; Morlock, J.; Muller, Th.; Neubauer, S.; Papaikonomou, A.; Peiffer, T.; Renz, M.; Richter, S.; Schmidt, A.; Wagner, W.; Wagner-Kuhr, J.; Weinelt, J.] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Seoul Natl Univ, Seoul 151742, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Sungkyunkwan Univ, Suwon 440746, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Korea Inst Sci & Technol Informat, Taejon 305806, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Chonnam Natl Univ, Kwangju 500757, South Korea.
[Barbaro-Galtieri, A.; Beringer, J.; Cerri, A.; Deisher, A.; Fang, H. C.; Haber, C.; Heinemann, B.; Hsu, S. -C.; Lin, C. -S.; Lujan, P.; Lys, J.; Mulmenstadt, J.; Nielsen, J.; Volobouev, I.; Yao, W. M.] Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Herndon, M.; Houlden, M.; Manca, G.; McNulty, R.; Mehta, A.; Shears, T.] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England.
[Bartsch, V.; Beecher, D.; Bizjak, I.; Cerrito, L.; Lancaster, M.; Malik, S.; Nurse, E.; Vine, T.; Waters, D.] UCL, London WC1E 6BT, England.
[Calancha, C.; Fernandez, J. P.; Gonzalez, O.; Martinez-Ballarin, R.; Redondo, I.; Ttito-Guzman, P.; Vidal, M.] CIEMAT, E-28040 Madrid, Spain.
[Bauer, G.; Choudalakis, G.; Gomez-Ceballos, G.; Goncharov, M.; Hahn, K.; Henderson, C.; Knuteson, B.; Makhoul, K.; Paus, C.; Xie, S.] MIT, Cambridge, MA 02139 USA.
[Beauchemin, P. -H.; Buzatu, A.; Carron, S.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Spreitzer, T.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] McGill Univ, Inst Particle Phys, Montreal, PQ H3A 2T8, Canada.
[Beauchemin, P. -H.; Buzatu, A.; Carron, S.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Spreitzer, T.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] Simon Fraser Univ, Burnaby, BC V5A 1S6, Canada.
[Beauchemin, P. -H.; Buzatu, A.; Carron, S.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Spreitzer, T.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] Univ Toronto, Toronto, ON M5S 1A7, Canada.
[Beauchemin, P. -H.; Buzatu, A.; Carron, S.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Spreitzer, T.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] TRIUMF, Vancouver, BC V6T 2A3, Canada.
[Amidei, D.; Campbell, M.; Cully, J. C.; Gerdes, D.; Strycker, G. L.; Tecchio, M.; Varganov, A.; Wright, T.] Univ Michigan, Ann Arbor, MI 48109 USA.
[Bromberg, C.; Campanelli, M.; Gunay-Unalan, Z.; Hussein, M.; Huston, J.; Miller, R.; Sorin, V.; Tollefson, K.] Michigan State Univ, E Lansing, MI 48824 USA.
[Shreyber, I.] Inst Theoret & Expt Phys, Moscow 117259, Russia.
[Gold, M.; Gorelov, I.; Seidel, S.; Strologas, J.; Vogel, M.] Univ New Mexico, Albuquerque, NM 87131 USA.
[Anastassov, A.; Schmitt, M.; Stentz, D.] Northwestern Univ, Evanston, IL 60208 USA.
[Efron, J.; Hughes, R. E.; Lannon, K.; Parks, B.; Slaunwhite, J.; Winer, B. L.] Ohio State Univ, Columbus, OH 43210 USA.
[Nakano, I.; Takashima, R.; Tanaka, R.] Okayama Univ, Okayama 7008530, Japan.
[Kato, Y.; Okusawa, T.; Seiya, Y.; Wakisaka, T.; Yoshida, T.] Osaka City Univ, Osaka 588, Japan.
[Azfar, F.; Farrington, S.; Harper, S.; Hays, C.; Huffman, B. T.; Linacre, J.; Lyons, L.; Malde, S.; Oakes, L.; Pounder, N.; Rademacker, J.; Renton, P.] Univ Oxford, Oxford OX1 3RH, England.
[Bisello, D.; Brigliadori, L.; Busetto, G.; Compostella, G.; Cortiana, G.; Donini, J.; Dorigo, T.; Gresele, A.; Lazzizzera, I.; Loreti, M.; Lucchesi, D.; Griso, S. Pagan] Ist Nazl Fis Nucl, Sez Padova Trento, I-35131 Padua, Italy.
[Amerio, S.; Bisello, D.; Busetto, G.; Cortiana, G.; Gresele, A.; Lazzizzera, I.; Loreti, M.; Lucchesi, D.; Griso, S. Pagan] Univ Padua, I-35131 Padua, Italy.
[Ciobanu, C. I.; di Giovanni, G. P.; Savoy-Navarro, A.; Tourneur, S.] Univ Paris 06, CNRS, IN2P3, LPNHE,UMR7585, F-75252 Paris, France.
[Amerio, S.; Canepa, A.; Heijboer, A.; Heinrich, J.; Keung, J.; Kroll, J.; Lipeles, E.; Lockyer, N. S.; Neu, C.; Pianori, E.; Rodriguez, T.; Thomson, E.; Tu, Y.; Wagner, P.; Whiteson, D.; Williams, H. H.] Univ Penn, Philadelphia, PA 19104 USA.
[Azzurri, P.; Bedeschi, F.; Bellettini, G.; Carosi, R.; Catastini, P.; Cavaliere, V.; Chiarelli, G.; Ciocci, M. A.; Crescioli, F.; Dell'Orso, M.; Donati, S.; Ferrazza, C.; Giannetti, P.; Giunta, M.; Introzzi, G.; Lami, S.; Latino, G.; Leone, S.; Menzione, A.; Morello, M. J.; Piacentino, G.; Punzi, G.; Ristori, L.; Sartori, L.; Scribano, A.; Scuri, F.; Sforza, F.; Sidoti, A.; Squillacioti, P.; Trovato, M.; Turini, N.; Vataga, E.; Volpi, G.] Ist Nazl Fis Nucl, I-56127 Pisa, Italy.
[Azzurri, P.; Bellettini, G.; Crescioli, F.; Dell'Orso, M.; Donati, S.; Giunta, M.; Morello, M. J.; Punzi, G.; Volpi, G.] Univ Pisa, I-56127 Pisa, Italy.
[Catastini, P.; Cavaliere, V.; Ciocci, M. A.; Latino, G.; Scribano, A.; Squillacioti, P.; Turini, N.] Univ Siena, I-56127 Pisa, Italy.
[Ferrazza, C.; Vataga, E.] Scuola Normale Super Pisa, I-56127 Pisa, Italy.
[Boudreau, J.; Gibson, K.; Hartz, M.; Liu, C.; Rahaman, A.; Shepard, P. F.] Univ Pittsburgh, Pittsburgh, PA 15260 USA.
[Apresyan, A.; Barnes, V. E.; Bolla, G.; Bortoletto, D.; Flanagan, G.; Garfinkel, A. F.; Jones, M.; Laasanen, A. T.; Margaroli, F.; Merkel, P.; Ranjan, N.; Sedov, A.] Purdue Univ, W Lafayette, IN 47907 USA.
[Bodek, A.; Boisvert, V.; Budd, H. S.; Chung, Y. S.; de Barbaro, P.; Gimmell, J. L.; Han, B. -Y.; Han, J. Y.; McFarland, K. S.; Sakumoto, W. K.; Yu, G. B.] Univ Rochester, Rochester, NY 14627 USA.
[Bhatti, A.; Demortier, L.; Goulianos, K.; Hatakeyama, K.; Lungu, G.; Mesropian, C.; Terashi, K.] Rockefeller Univ, New York, NY 10021 USA.
[De Cecco, S.; Dionisi, C.; Gallinaro, M.; Giagu, S.; Iori, M.; Luci, C.; Mastrandrea, P.; Rescigno, M.; Sarkar, S.; Zanello, L.] Ist Nazl Fis Nucl, Sez Roma 1, I-00185 Rome, Italy.
[Dionisi, C.; Giagu, S.; Iori, M.; Luci, C.; Sarkar, S.; Zanello, L.] Univ Roma La Sapienza, I-00185 Rome, Italy.
[Chuang, S. H.; Dube, S.; Halkiadakis, E.; Hare, D.; Lath, A.; Somalwar, S.] Rutgers State Univ, Piscataway, NJ 08855 USA.
[Aurisano, A.; Elagin, A.; Kamon, T.; Khotilovich, V.; Lee, E.; Lee, S. W.; McIntyre, P.; Safonov, A.; Toback, D.; Weinberger, M.] Texas A&M Univ, College Stn, TX 77843 USA.
[Cauz, D.; Di Ruzza, B.; Giordani, M.; Pauletta, G.; Penzo, A.; Rossi, M.; Santi, L.; Totaro, P.; Zanetti, A.] Ist Nazl Fis Nucl Trieste Udine, I-34100 Trieste, Italy.
[Cauz, D.; Di Ruzza, B.; Giordani, M.; Pauletta, G.; Santi, L.; Totaro, P.] Univ Trieste Udine, I-33100 Udine, Italy.
[Akimoto, T.; Hara, K.; Kim, S. H.; Kimura, N.; Kubo, T.; Kurata, M.; Maruyama, T.; Masubuchi, T.; Miyake, H.; Nagai, Y.; Nagano, A.; Naganoma, J.; Nakamura, K.; Shimojima, M.; Suzuki, T.; Takeuchi, Y.; Tomura, T.; Ukegawa, F.] Univ Tsukuba, Tsukuba, Ibaraki 305, Japan.
[Hare, M.; Napier, A.; Rolli, S.; Sliwa, K.; Whitehouse, B.] Tufts Univ, Medford, MA 02155 USA.
[Arisawa, T.; Kondo, K.; Yorita, K.] Waseda Univ, Tokyo 169, Japan.
[Harr, R. F.; Karchin, P. E.; Kulkarni, N. P.; Mattson, M. E.; Shalhout, S. Z.] Wayne State Univ, Detroit, MI 48201 USA.
[Bellinger, J.; Carlsmith, D.; Chung, W. H.; Nett, J.; Pondrom, L.; Pursley, J.; Ramakrishnan, V.; Shon, Y.] Univ Wisconsin, Madison, WI 53706 USA.
[Feild, R. G.; Husemann, U.; Loginov, A.; Martin, A.; Schmidt, M. P.; Stanitzki, M.; Tipton, P.] Yale Univ, New Haven, CT 06520 USA.
RP Aaltonen, T (reprint author), Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland.
RI Introzzi, Gianluca/K-2497-2015; Gorelov, Igor/J-9010-2015; Xie,
Si/O-6830-2016; Canelli, Florencia/O-9693-2016; Chiarelli,
Giorgio/E-8953-2012; Scodellaro, Luca/K-9091-2014; Grinstein,
Sebastian/N-3988-2014; Paulini, Manfred/N-7794-2014; Russ,
James/P-3092-2014; unalan, zeynep/C-6660-2015; Lazzizzera,
Ignazio/E-9678-2015; vilar, rocio/P-8480-2014; Cabrera Urban,
Susana/H-1376-2015; Garcia, Jose /H-6339-2015; ciocci, maria agnese
/I-2153-2015; Cavalli-Sforza, Matteo/H-7102-2015; Muelmenstaedt,
Johannes/K-2432-2015; Ruiz, Alberto/E-4473-2011; Robson,
Aidan/G-1087-2011; De Cecco, Sandro/B-1016-2012; St.Denis,
Richard/C-8997-2012; manca, giulia/I-9264-2012; Kim,
Soo-Bong/B-7061-2014; Lysak, Roman/H-2995-2014; Moon,
Chang-Seong/J-3619-2014; Amerio, Silvia/J-4605-2012; Punzi,
Giovanni/J-4947-2012; Annovi, Alberto/G-6028-2012; Ivanov,
Andrew/A-7982-2013; Warburton, Andreas/N-8028-2013;
OI Introzzi, Gianluca/0000-0002-1314-2580; Gorelov,
Igor/0000-0001-5570-0133; Xie, Si/0000-0003-2509-5731; Canelli,
Florencia/0000-0001-6361-2117; Chiarelli, Giorgio/0000-0001-9851-4816;
Giordani, Mario/0000-0002-0792-6039; Casarsa,
Massimo/0000-0002-1353-8964; Scodellaro, Luca/0000-0002-4974-8330;
Grinstein, Sebastian/0000-0002-6460-8694; Paulini,
Manfred/0000-0002-6714-5787; Russ, James/0000-0001-9856-9155; unalan,
zeynep/0000-0003-2570-7611; Lazzizzera, Ignazio/0000-0001-5092-7531;
ciocci, maria agnese /0000-0003-0002-5462; Muelmenstaedt,
Johannes/0000-0003-1105-6678; Ruiz, Alberto/0000-0002-3639-0368; Moon,
Chang-Seong/0000-0001-8229-7829; Punzi, Giovanni/0000-0002-8346-9052;
Annovi, Alberto/0000-0002-4649-4398; Ivanov, Andrew/0000-0002-9270-5643;
Warburton, Andreas/0000-0002-2298-7315; Latino,
Giuseppe/0000-0002-4098-3502; iori, maurizio/0000-0002-6349-0380;
Lancaster, Mark/0000-0002-8872-7292; Gallinaro,
Michele/0000-0003-1261-2277; Turini, Nicola/0000-0002-9395-5230;
Osterberg, Kenneth/0000-0003-4807-0414
FU U.S. Department of Energy and National Science Foundation; Italian
Istituto Nazionale di Fisica Nucleare; Ministry of Education, Culture,
Sports, Science and Technology of Japan; Natural Sciences and
Engineering Research Council of Canada; National Science Council of the
Republic of China; Swiss National Science Foundation; A. P. Sloan
Foundation; Bundesministerium fur Bildung und Forschung, Germany; Korean
Science and Engineering Foundation and the Korean Research Foundation;
Science and Technology Facilities Council and the Royal Society, UK;
Institut National de Physique Nucleaire et Physique des Particules/CNRS;
Russian Foundation for Basic Research; Ministerio de Ciencia e
Innovacion, and Programa Consolider-Ingenio 2010, Spain; Slovak R D
Agency; Academy of Finland
FX This work was supported by the U.S. Department of Energy and National
Science Foundation; the Italian Istituto Nazionale di Fisica Nucleare;
the Ministry of Education, Culture, Sports, Science and Technology of
Japan; the Natural Sciences and Engineering Research Council of Canada;
the National Science Council of the Republic of China; the Swiss
National Science Foundation; the A. P. Sloan Foundation; the
Bundesministerium fur Bildung und Forschung, Germany; the Korean Science
and Engineering Foundation and the Korean Research Foundation; the
Science and Technology Facilities Council and the Royal Society, UK; the
Institut National de Physique Nucleaire et Physique des Particules/CNRS;
the Russian Foundation for Basic Research; the Ministerio de Ciencia e
Innovacion, and Programa Consolider-Ingenio 2010, Spain; the Slovak R &
D Agency; and the Academy of Finland.
NR 53
TC 2
Z9 2
U1 1
U2 8
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 5
AR 052001
DI 10.1103/PhysRevD.80.052001
PG 24
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501MB
UT WOS:000270384900012
ER
PT J
AU Aaltonen, T
Adelman, J
Akimoto, T
Gonzalez, BA
Amerio, S
Amidei, D
Anastassov, A
Annovi, A
Antos, J
Apollinari, G
Apresyan, A
Arisawa, T
Artikov, A
Ashmanskas, W
Attal, A
Aurisano, A
Azfar, F
Badgett, W
Barbaro-Galtieri, A
Barnes, VE
Barnett, BA
Barria, P
Bartos, P
Bartsch, V
Bauer, G
Beauchemin, PH
Bedeschi, F
Beecher, D
Behari, S
Bellettini, G
Bellinger, J
Benjamin, D
Beretvas, A
Beringer, J
Bhatti, A
Binkley, M
Bisello, D
Bizjak, I
Blair, RE
Blocker, C
Blumenfeld, B
Bocci, A
Bodek, A
Boisvert, V
Bolla, G
Bortoletto, D
Boudreau, J
Boveia, A
Brau, B
Bridgeman, A
Brigliadori, L
Bromberg, C
Brubaker, E
Budagov, J
Budd, HS
Budd, S
Burke, S
Burkett, K
Busetto, G
Bussey, P
Buzatu, A
Byrum, KL
Cabrera, S
Calancha, C
Campanelli, M
Campbell, M
Canelli, F
Canepa, A
Carls, B
Carlsmith, D
Carosi, R
Carrillo, S
Carron, S
Casal, B
Casarsa, M
Castro, A
Catastini, P
Cauz, D
Cavaliere, V
Cavalli-Sforza, M
Cerri, A
Cerrito, L
Chang, SH
Chen, YC
Chertok, M
Chiarelli, G
Chlachidze, G
Chlebana, F
Cho, K
Chokheli, D
Chou, JP
Choudalakis, G
Chuang, SH
Chung, K
Chung, WH
Chung, YS
Chwalek, T
Ciobanu, CI
Ciocci, MA
Clark, A
Clark, D
Compostella, G
Convery, ME
Conway, J
Cordelli, M
Cortiana, G
Cox, CA
Cox, DJ
Crescioli, F
Almenar, CC
Cuevas, J
Culbertson, R
Cully, JC
Dagenhart, D
Datta, M
Davies, T
de Barbaro, P
De Cecco, S
Deisher, A
De Lorenzo, G
Dell'Orso, M
Deluca, C
Demortier, L
Deng, J
Deninno, M
Derwent, PF
Di Canto, A
di Giovanni, GP
Dionisi, C
Di Ruzza, B
Dittmann, JR
D'Onofrio, M
Donati, S
Dong, P
Donini, J
Dorigo, T
Dube, S
Efron, J
Elagin, A
Erbacher, R
Errede, D
Errede, S
Eusebi, R
Fang, HC
Farrington, S
Fedorko, WT
Feild, RG
Feindt, M
Fernandez, JP
Ferrazza, C
Field, R
Flanagan, G
Forrest, R
Frank, MJ
Franklin, M
Freeman, JC
Furic, I
Gallinaro, M
Galyardt, J
Garcia, JE
Garfinkel, AF
Garosi, P
Genser, K
Gerberich, H
Gerdes, D
Gessler, A
Giagu, S
Giakoumopoulou, V
Giannetti, P
Gibson, K
Gimmell, JL
Ginsburg, CM
Giokaris, N
Giordani, M
Giromini, P
Giunta, M
Giurgiu, G
Glagolev, V
Glenzinski, D
Gold, M
Goldschmidt, N
Golossanov, A
Gomez, G
Gomez-Ceballos, G
Goncharov, M
Gonzalez, O
Gorelov, I
Goshaw, AT
Goulianos, K
Gresele, A
Grinstein, S
Grosso-Pilcher, C
Group, RC
Grundler, U
da Costa, JG
Gunay-Unalan, Z
Haber, C
Hahn, K
Hahn, SR
Halkiadakis, E
Han, BY
Han, JY
Happacher, F
Hara, K
Hare, D
Hare, M
Harper, S
Harr, RF
Harris, RM
Hartz, M
Hatakeyama, K
Hays, C
Heck, M
Heijboer, A
Heinrich, J
Henderson, C
Herndon, M
Heuser, J
Hewamanage, S
Hidas, D
Hill, CS
Hirschbuehl, D
Hocker, A
Hou, S
Houlden, M
Hsu, SC
Huffman, BT
Hughes, RE
Husemann, U
Hussein, M
Huston, J
Incandela, J
Introzzi, G
Iori, M
Ivanov, A
James, E
Jang, D
Jayatilaka, B
Jeon, EJ
Jha, MK
Jindariani, S
Johnson, W
Jones, M
Joo, KK
Jun, SY
Jung, JE
Junk, TR
Kamon, T
Kar, D
Karchin, PE
Kato, Y
Kephart, R
Ketchum, W
Keung, J
Khotilovich, V
Kilminster, B
Kim, DH
Kim, HS
Kim, HW
Kim, JE
Kim, MJ
Kim, SB
Kim, SH
Kim, YK
Kimura, N
Kirsch, L
Klimenko, S
Knuteson, B
Ko, BR
Kondo, K
Kong, DJ
Konigsberg, J
Korytov, A
Kotwal, AV
Kreps, M
Kroll, J
Krop, D
Krumnack, N
Kruse, M
Krutelyov, V
Kubo, T
Kuhr, T
Kulkarni, NP
Kurata, M
Kwang, S
Laasanen, AT
Lami, S
Lammel, S
Lancaster, M
Lander, RL
Lannon, K
Lath, A
Latino, G
Lazzizzera, I
LeCompte, T
Lee, E
Lee, HS
Lee, SW
Leone, S
Lewis, JD
Lin, CS
Linacre, J
Lindgren, M
Lipeles, E
Liss, TM
Lister, A
Litvintsev, DO
Liu, C
Liu, T
Lockyer, NS
Loginov, A
Loreti, M
Lovas, L
Lucchesi, D
Luci, C
Lueck, J
Lujan, P
Lukens, P
Lungu, G
Lyons, L
Lys, J
Lysak, R
MacQueen, D
Madrak, R
Maeshima, K
Makhoul, K
Maki, T
Maksimovic, P
Malde, S
Malik, S
Manca, G
Manousakis-Katsikakis, A
Margaroli, F
Marino, C
Marino, CP
Martin, A
Martin, V
Martinez, M
Martinez-Ballarin, R
Maruyama, T
Mastrandrea, P
Masubuchi, T
Mathis, M
Mattson, ME
Mazzanti, P
McFarland, KS
McIntyre, P
McNulty, R
Mehta, A
Mehtala, P
Menzione, A
Merkel, P
Mesropian, C
Miao, T
Miladinovic, N
Miller, R
Mills, C
Milnik, M
Mitra, A
Mitselmakher, G
Miyake, H
Moed, S
Moggi, N
Mondragon, MN
Moon, CS
Moore, R
Morello, MJ
Morlock, J
Fernandez, PM
Mulmenstadt, J
Mukherjee, A
Muller, T
Mumford, R
Murat, P
Mussini, M
Nachtman, J
Nagai, Y
Nagano, A
Naganoma, J
Nakamura, K
Nakano, I
Napier, A
Necula, V
Nett, J
Neu, C
Neubauer, MS
Neubauer, S
Nielsen, J
Nodulman, L
Norman, M
Norniella, O
Nurse, E
Oakes, L
Oh, SH
Oh, YD
Oksuzian, I
Okusawa, T
Orava, R
Osterberg, K
Griso, SP
Pagliarone, C
Palencia, E
Papadimitriou, V
Papaikonomou, A
Paramonov, AA
Parks, B
Pashapour, S
Patrick, J
Pauletta, G
Paulini, M
Paus, C
Peiffer, T
Pellett, DE
Penzo, A
Phillips, TJ
Piacentino, G
Pianori, E
Pinera, L
Pitts, K
Plager, C
Pondrom, L
Poukhov, O
Pounder, N
Prakoshyn, F
Pronko, A
Proudfoot, J
Ptohos, F
Pueschel, E
Punzi, G
Pursley, J
Rademacker, J
Rahaman, A
Ramakrishnan, V
Ranjan, N
Redondo, I
Renton, P
Renz, M
Rescigno, M
Richter, S
Rimondi, F
Ristori, L
Robson, A
Rodrigo, T
Rodriguez, T
Rogers, E
Rolli, S
Roser, R
Rossi, M
Rossin, R
Roy, P
Ruiz, A
Russ, J
Rusu, V
Rutherford, B
Saarikko, H
Safonov, A
Sakumoto, WK
Salto, O
Santi, L
Sarkar, S
Sartori, L
Sato, K
Savoy-Navarro, A
Schlabach, P
Schmidt, A
Schmidt, EE
Schmidt, MA
Schmidt, MP
Schmitt, M
Schwarz, T
Scodellaro, L
Scribano, A
Scuri, F
Sedov, A
Seidel, S
Seiya, Y
Semenov, A
Sexton-Kennedy, L
Sforza, F
Sfyrla, A
Shalhout, SZ
Shears, T
Shepard, PF
Shimojima, M
Shiraishi, S
Shochet, M
Shon, Y
Shreyber, I
Simonenko, A
Sinervo, P
Sisakyan, A
Slaughter, AJ
Slaunwhite, J
Sliwa, K
Smith, JR
Snider, FD
Snihur, R
Soha, A
Somalwar, S
Sorin, V
Spreitzer, T
Squillacioti, P
Stanitzki, M
Denis, RS
Stelzer, B
Stelzer-Chilton, O
Stentz, D
Strologas, J
Strycker, GL
Suh, JS
Sukhanov, A
Suslov, I
Suzuki, T
Taffard, A
Takashima, R
Takeuchi, Y
Tanaka, R
Tecchio, M
Teng, PK
Terashi, K
Thom, J
Thompson, AS
Thompson, GA
Thomson, E
Tipton, P
Ttito-Guzman, P
Tkaczyk, S
Toback, D
Tokar, S
Tollefson, K
Tomura, T
Tonelli, D
Torre, S
Torretta, D
Totaro, P
Tourneur, S
Trovato, M
Tsai, SY
Tu, Y
Turini, N
Ukegawa, F
Vallecorsa, S
van Remortel, N
Varganov, A
Vataga, E
Vazquez, F
Velev, G
Vellidis, C
Vidal, M
Vidal, R
Vila, I
Vilar, R
Vine, T
Vogel, M
Volobouev, I
Volpi, G
Wagner, P
Wagner, RG
Wagner, RL
Wagner, W
Wagner-Kuhr, J
Wakisaka, T
Wallny, R
Wang, SM
Warburton, A
Waters, D
Weinberger, M
Weinelt, J
Wester, WC
Whitehouse, B
Whiteson, D
Wicklund, AB
Wicklund, E
Wilbur, S
Williams, G
Williams, HH
Wilson, P
Winer, BL
Wittich, P
Wolbers, S
Wolfe, C
Wright, T
Wu, X
Wurthwein, F
Xie, S
Yagil, A
Yamamoto, K
Yamaoka, J
Yang, UK
Yang, YC
Yao, WM
Yeh, GP
Yi, K
Yoh, J
Yorita, K
Yoshida, T
Yu, GB
Yu, I
Yu, SS
Yun, JC
Zanello, L
Zanetti, A
Zhang, X
Zheng, Y
Zucchelli, S
AF Aaltonen, T.
Adelman, J.
Akimoto, T.
Alvarez Gonzalez, B.
Amerio, S.
Amidei, D.
Anastassov, A.
Annovi, A.
Antos, J.
Apollinari, G.
Apresyan, A.
Arisawa, T.
Artikov, A.
Ashmanskas, W.
Attal, A.
Aurisano, A.
Azfar, F.
Badgett, W.
Barbaro-Galtieri, A.
Barnes, V. E.
Barnett, B. A.
Barria, P.
Bartos, P.
Bartsch, V.
Bauer, G.
Beauchemin, P. -H.
Bedeschi, F.
Beecher, D.
Behari, S.
Bellettini, G.
Bellinger, J.
Benjamin, D.
Beretvas, A.
Beringer, J.
Bhatti, A.
Binkley, M.
Bisello, D.
Bizjak, I.
Blair, R. E.
Blocker, C.
Blumenfeld, B.
Bocci, A.
Bodek, A.
Boisvert, V.
Bolla, G.
Bortoletto, D.
Boudreau, J.
Boveia, A.
Brau, B.
Bridgeman, A.
Brigliadori, L.
Bromberg, C.
Brubaker, E.
Budagov, J.
Budd, H. S.
Budd, S.
Burke, S.
Burkett, K.
Busetto, G.
Bussey, P.
Buzatu, A.
Byrum, K. L.
Cabrera, S.
Calancha, C.
Campanelli, M.
Campbell, M.
Canelli, F.
Canepa, A.
Carls, B.
Carlsmith, D.
Carosi, R.
Carrillo, S.
Carron, S.
Casal, B.
Casarsa, M.
Castro, A.
Catastini, P.
Cauz, D.
Cavaliere, V.
Cavalli-Sforza, M.
Cerri, A.
Cerrito, L.
Chang, S. H.
Chen, Y. C.
Chertok, M.
Chiarelli, G.
Chlachidze, G.
Chlebana, F.
Cho, K.
Chokheli, D.
Chou, J. P.
Choudalakis, G.
Chuang, S. H.
Chung, K.
Chung, W. H.
Chung, Y. S.
Chwalek, T.
Ciobanu, C. I.
Ciocci, M. A.
Clark, A.
Clark, D.
Compostella, G.
Convery, M. E.
Conway, J.
Cordelli, M.
Cortiana, G.
Cox, C. A.
Cox, D. J.
Crescioli, F.
Almenar, C. Cuenca
Cuevas, J.
Culbertson, R.
Cully, J. C.
Dagenhart, D.
Datta, M.
Davies, T.
de Barbaro, P.
De Cecco, S.
Deisher, A.
De Lorenzo, G.
Dell'Orso, M.
Deluca, C.
Demortier, L.
Deng, J.
Deninno, M.
Derwent, P. F.
Di Canto, A.
di Giovanni, G. P.
Dionisi, C.
Di Ruzza, B.
Dittmann, J. R.
D'Onofrio, M.
Donati, S.
Dong, P.
Donini, J.
Dorigo, T.
Dube, S.
Efron, J.
Elagin, A.
Erbacher, R.
Errede, D.
Errede, S.
Eusebi, R.
Fang, H. C.
Farrington, S.
Fedorko, W. T.
Feild, R. G.
Feindt, M.
Fernandez, J. P.
Ferrazza, C.
Field, R.
Flanagan, G.
Forrest, R.
Frank, M. J.
Franklin, M.
Freeman, J. C.
Furic, I.
Gallinaro, M.
Galyardt, J.
Garcia, J. E.
Garfinkel, A. F.
Garosi, P.
Genser, K.
Gerberich, H.
Gerdes, D.
Gessler, A.
Giagu, S.
Giakoumopoulou, V.
Giannetti, P.
Gibson, K.
Gimmell, J. L.
Ginsburg, C. M.
Giokaris, N.
Giordani, M.
Giromini, P.
Giunta, M.
Giurgiu, G.
Glagolev, V.
Glenzinski, D.
Gold, M.
Goldschmidt, N.
Golossanov, A.
Gomez, G.
Gomez-Ceballos, G.
Goncharov, M.
Gonzalez, O.
Gorelov, I.
Goshaw, A. T.
Goulianos, K.
Gresele, A.
Grinstein, S.
Grosso-Pilcher, C.
Group, R. C.
Grundler, U.
da Costa, J. Guimaraes
Gunay-Unalan, Z.
Haber, C.
Hahn, K.
Hahn, S. R.
Halkiadakis, E.
Han, B. -Y.
Han, J. Y.
Happacher, F.
Hara, K.
Hare, D.
Hare, M.
Harper, S.
Harr, R. F.
Harris, R. M.
Hartz, M.
Hatakeyama, K.
Hays, C.
Heck, M.
Heijboer, A.
Heinrich, J.
Henderson, C.
Herndon, M.
Heuser, J.
Hewamanage, S.
Hidas, D.
Hill, C. S.
Hirschbuehl, D.
Hocker, A.
Hou, S.
Houlden, M.
Hsu, S. -C.
Huffman, B. T.
Hughes, R. E.
Husemann, U.
Hussein, M.
Huston, J.
Incandela, J.
Introzzi, G.
Iori, M.
Ivanov, A.
James, E.
Jang, D.
Jayatilaka, B.
Jeon, E. J.
Jha, M. K.
Jindariani, S.
Johnson, W.
Jones, M.
Joo, K. K.
Jun, S. Y.
Jung, J. E.
Junk, T. R.
Kamon, T.
Kar, D.
Karchin, P. E.
Kato, Y.
Kephart, R.
Ketchum, W.
Keung, J.
Khotilovich, V.
Kilminster, B.
Kim, D. H.
Kim, H. S.
Kim, H. W.
Kim, J. E.
Kim, M. J.
Kim, S. B.
Kim, S. H.
Kim, Y. K.
Kimura, N.
Kirsch, L.
Klimenko, S.
Knuteson, B.
Ko, B. R.
Kondo, K.
Kong, D. J.
Konigsberg, J.
Korytov, A.
Kotwal, A. V.
Kreps, M.
Kroll, J.
Krop, D.
Krumnack, N.
Kruse, M.
Krutelyov, V.
Kubo, T.
Kuhr, T.
Kulkarni, N. P.
Kurata, M.
Kwang, S.
Laasanen, A. T.
Lami, S.
Lammel, S.
Lancaster, M.
Lander, R. L.
Lannon, K.
Lath, A.
Latino, G.
Lazzizzera, I.
LeCompte, T.
Lee, E.
Lee, H. S.
Lee, S. W.
Leone, S.
Lewis, J. D.
Lin, C. -S.
Linacre, J.
Lindgren, M.
Lipeles, E.
Liss, T. M.
Lister, A.
Litvintsev, D. O.
Liu, C.
Liu, T.
Lockyer, N. S.
Loginov, A.
Loreti, M.
Lovas, L.
Lucchesi, D.
Luci, C.
Lueck, J.
Lujan, P.
Lukens, P.
Lungu, G.
Lyons, L.
Lys, J.
Lysak, R.
MacQueen, D.
Madrak, R.
Maeshima, K.
Makhoul, K.
Maki, T.
Maksimovic, P.
Malde, S.
Malik, S.
Manca, G.
Manousakis-Katsikakis, A.
Margaroli, F.
Marino, C.
Marino, C. P.
Martin, A.
Martin, V.
Martinez, M.
Martinez-Ballarin, R.
Maruyama, T.
Mastrandrea, P.
Masubuchi, T.
Mathis, M.
Mattson, M. E.
Mazzanti, P.
McFarland, K. S.
McIntyre, P.
McNulty, R.
Mehta, A.
Mehtala, P.
Menzione, A.
Merkel, P.
Mesropian, C.
Miao, T.
Miladinovic, N.
Miller, R.
Mills, C.
Milnik, M.
Mitra, A.
Mitselmakher, G.
Miyake, H.
Moed, S.
Moggi, N.
Mondragon, M. N.
Moon, C. S.
Moore, R.
Morello, M. J.
Morlock, J.
Fernandez, P. Movilla
Mulmenstadt, J.
Mukherjee, A.
Muller, Th.
Mumford, R.
Murat, P.
Mussini, M.
Nachtman, J.
Nagai, Y.
Nagano, A.
Naganoma, J.
Nakamura, K.
Nakano, I.
Napier, A.
Necula, V.
Nett, J.
Neu, C.
Neubauer, M. S.
Neubauer, S.
Nielsen, J.
Nodulman, L.
Norman, M.
Norniella, O.
Nurse, E.
Oakes, L.
Oh, S. H.
Oh, Y. D.
Oksuzian, I.
Okusawa, T.
Orava, R.
Osterberg, K.
Griso, S. Pagan
Pagliarone, C.
Palencia, E.
Papadimitriou, V.
Papaikonomou, A.
Paramonov, A. A.
Parks, B.
Pashapour, S.
Patrick, J.
Pauletta, G.
Paulini, M.
Paus, C.
Peiffer, T.
Pellett, D. E.
Penzo, A.
Phillips, T. J.
Piacentino, G.
Pianori, E.
Pinera, L.
Pitts, K.
Plager, C.
Pondrom, L.
Poukhov, O.
Pounder, N.
Prakoshyn, F.
Pronko, A.
Proudfoot, J.
Ptohos, F.
Pueschel, E.
Punzi, G.
Pursley, J.
Rademacker, J.
Rahaman, A.
Ramakrishnan, V.
Ranjan, N.
Redondo, I.
Renton, P.
Renz, M.
Rescigno, M.
Richter, S.
Rimondi, F.
Ristori, L.
Robson, A.
Rodrigo, T.
Rodriguez, T.
Rogers, E.
Rolli, S.
Roser, R.
Rossi, M.
Rossin, R.
Roy, P.
Ruiz, A.
Russ, J.
Rusu, V.
Rutherford, B.
Saarikko, H.
Safonov, A.
Sakumoto, W. K.
Salto, O.
Santi, L.
Sarkar, S.
Sartori, L.
Sato, K.
Savoy-Navarro, A.
Schlabach, P.
Schmidt, A.
Schmidt, E. E.
Schmidt, M. A.
Schmidt, M. P.
Schmitt, M.
Schwarz, T.
Scodellaro, L.
Scribano, A.
Scuri, F.
Sedov, A.
Seidel, S.
Seiya, Y.
Semenov, A.
Sexton-Kennedy, L.
Sforza, F.
Sfyrla, A.
Shalhout, S. Z.
Shears, T.
Shepard, P. F.
Shimojima, M.
Shiraishi, S.
Shochet, M.
Shon, Y.
Shreyber, I.
Simonenko, A.
Sinervo, P.
Sisakyan, A.
Slaughter, A. J.
Slaunwhite, J.
Sliwa, K.
Smith, J. R.
Snider, F. D.
Snihur, R.
Soha, A.
Somalwar, S.
Sorin, V.
Spreitzer, T.
Squillacioti, P.
Stanitzki, M.
Denis, R. St.
Stelzer, B.
Stelzer-Chilton, O.
Stentz, D.
Strologas, J.
Strycker, G. L.
Suh, J. S.
Sukhanov, A.
Suslov, I.
Suzuki, T.
Taffard, A.
Takashima, R.
Takeuchi, Y.
Tanaka, R.
Tecchio, M.
Teng, P. K.
Terashi, K.
Thom, J.
Thompson, A. S.
Thompson, G. A.
Thomson, E.
Tipton, P.
Ttito-Guzman, P.
Tkaczyk, S.
Toback, D.
Tokar, S.
Tollefson, K.
Tomura, T.
Tonelli, D.
Torre, S.
Torretta, D.
Totaro, P.
Tourneur, S.
Trovato, M.
Tsai, S. -Y.
Tu, Y.
Turini, N.
Ukegawa, F.
Vallecorsa, S.
van Remortel, N.
Varganov, A.
Vataga, E.
Vazquez, F.
Velev, G.
Vellidis, C.
Vidal, M.
Vidal, R.
Vila, I.
Vilar, R.
Vine, T.
Vogel, M.
Volobouev, I.
Volpi, G.
Wagner, P.
Wagner, R. G.
Wagner, R. L.
Wagner, W.
Wagner-Kuhr, J.
Wakisaka, T.
Wallny, R.
Wang, S. M.
Warburton, A.
Waters, D.
Weinberger, M.
Weinelt, J.
Wester, W. C., III
Whitehouse, B.
Whiteson, D.
Wicklund, A. B.
Wicklund, E.
Wilbur, S.
Williams, G.
Williams, H. H.
Wilson, P.
Winer, B. L.
Wittich, P.
Wolbers, S.
Wolfe, C.
Wright, T.
Wu, X.
Wuerthwein, F.
Xie, S.
Yagil, A.
Yamamoto, K.
Yamaoka, J.
Yang, U. K.
Yang, Y. C.
Yao, W. M.
Yeh, G. P.
Yi, K.
Yoh, J.
Yorita, K.
Yoshida, T.
Yu, G. B.
Yu, I.
Yu, S. S.
Yun, J. C.
Zanello, L.
Zanetti, A.
Zhang, X.
Zheng, Y.
Zucchelli, S.
CA CDF Collaboration
TI Measurement of the top quark mass using the invariant mass of lepton
pairs in soft muon b-tagged events
SO PHYSICAL REVIEW D
LA English
DT Article
ID COLLIDER DETECTOR; PARTON DISTRIBUTIONS; DILEPTON EVENTS; FERMILAB;
PHYSICS
AB We present the first measurement of the mass of the top quark in a sample of t (t) over bar -> l (nu) over barb (b) over barq (q) over bar events (where l = e, mu) selected by identifying jets containing a muon candidate from the semileptonic decay of heavy-flavor hadrons (soft muon b tagging). The p (p) over bar collision data used correspond to an integrated luminosity of 2 fb(-1) and were collected by the CDF II detector at the Fermilab Tevatron Collider. The measurement is based on a novel technique exploiting the invariant mass of a subset of the decay particles, specifically the lepton from the W boson of the t -> Wb decay and the muon from a semileptonic b decay. We fit template histograms, derived from simulation of t (t) over bar events and a modeling of the background, to the mass distribution observed in the data and measure a top quark mass of 180.5 +/- 12.0(stat) +/- 3.6(syst) GeV/c(2), consistent with the current world average value.
C1 [Aaltonen, T.; Maki, T.; Mehtala, P.; Orava, R.; Osterberg, K.; Saarikko, H.; van Remortel, N.] Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland.
[Aaltonen, T.; Maki, T.; Mehtala, P.; Orava, R.; Osterberg, K.; Saarikko, H.; van Remortel, N.] Helsinki Inst Phys, FIN-00014 Helsinki, Finland.
[Chen, Y. C.; Hou, S.; Martin, V.; Mitra, A.; Teng, P. K.; Tsai, S. -Y.; Wang, S. M.] Acad Sinica, Inst Phys, Taipei 11529, Taiwan.
[Blair, R. E.; Byrum, K. L.; LeCompte, T.; Nodulman, L.; Proudfoot, J.; Wagner, R. G.; Wicklund, A. B.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Giakoumopoulou, V.; Giokaris, N.; Manousakis-Katsikakis, A.; Vellidis, C.] Univ Athens, GR-15771 Athens, Greece.
[Attal, A.; Cavalli-Sforza, M.; De Lorenzo, G.; Deluca, C.; D'Onofrio, M.; Martinez, M.; Salto, O.] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain.
[Dittmann, J. R.; Frank, M. J.; Hewamanage, S.; Krumnack, N.] Baylor Univ, Waco, TX 76798 USA.
[Brigliadori, L.; Castro, A.; Deninno, M.; Jha, M. K.; Mazzanti, P.; Moggi, N.; Mussini, M.; Rimondi, F.; Zucchelli, S.] Ist Nazl Fis Nucl, I-40127 Bologna, Italy.
[Brigliadori, L.; Castro, A.; Mussini, M.; Rimondi, F.; Zucchelli, S.] Univ Bologna, I-40127 Bologna, Italy.
[Blocker, C.; Clark, D.; Kirsch, L.; Miladinovic, N.] Brandeis Univ, Waltham, MA 02254 USA.
[Chertok, M.; Conway, J.; Cox, C. A.; Cox, D. J.; Almenar, C. Cuenca; Erbacher, R.; Forrest, R.; Ivanov, A.; Johnson, W.; Lander, R. L.; Lister, A.; Pellett, D. E.; Schwarz, T.; Smith, J. R.; Soha, A.] Univ Calif Davis, Davis, CA 95616 USA.
[Dong, P.; Plager, C.; Wallny, R.; Zheng, Y.] Univ Calif Los Angeles, Los Angeles, CA 90024 USA.
[Norman, M.; Wuerthwein, F.; Yagil, A.] Univ Calif San Diego, La Jolla, CA 92093 USA.
[Boveia, A.; Brau, B.; Hill, C. S.; Incandela, J.; Krutelyov, V.; Rossin, R.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
[Alvarez Gonzalez, B.; Casal, B.; Cuevas, J.; Gomez, G.; Rodrigo, T.; Ruiz, A.; Scodellaro, L.; Vila, I.; Vilar, R.] Univ Cantabria, CSIC, Inst Fis Cantabria, E-39005 Santander, Spain.
[Galyardt, J.; Jang, D.; Jun, S. Y.; Paulini, M.; Pueschel, E.; Russ, J.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
[Adelman, J.; Brubaker, E.; Canelli, F.; Fedorko, W. T.; Grosso-Pilcher, C.; Ketchum, W.; Kim, Y. K.; Krop, D.; Kwang, S.; Lee, H. S.; Paramonov, A. A.; Schmidt, M. A.; Shiraishi, S.; Shochet, M.; Wilbur, S.; Wolfe, C.; Yang, U. K.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
[Antos, J.; Bartos, P.; Lovas, L.; Lysak, R.; Tokar, S.] Inst Expt Phys, Kosice 04001, Slovakia.
[Antos, J.; Bartos, P.; Lovas, L.; Lysak, R.; Tokar, S.] Comenius Univ, Bratislava 84248, Slovakia.
[Artikov, A.; Budagov, J.; Chokheli, D.; Glagolev, V.; Poukhov, O.; Prakoshyn, F.; Semenov, A.; Simonenko, A.; Sisakyan, A.; Suslov, I.] Joint Inst Nucl Res, RU-141980 Dubna, Russia.
[Benjamin, D.; Bocci, A.; Cabrera, S.; Deng, J.; Goshaw, A. T.; Hidas, D.; Jayatilaka, B.; Ko, B. R.; Kotwal, A. V.; Kruse, M.; Necula, V.; Oh, S. H.; Phillips, T. J.; Yamaoka, J.] Duke Univ, Durham, NC 27708 USA.
[Apollinari, G.; Ashmanskas, W.; Badgett, W.; Beretvas, A.; Binkley, M.; Burke, S.; Burkett, K.; Canelli, F.; Casarsa, M.; Chlachidze, G.; Chlebana, F.; Chung, K.; Convery, M. E.; Culbertson, R.; Dagenhart, D.; Datta, M.; Derwent, P. F.; Eusebi, R.; Freeman, J. C.; Genser, K.; Ginsburg, C. M.; Glenzinski, D.; Golossanov, A.; Group, R. C.; Hahn, S. R.; Harris, R. M.; Hocker, A.; James, E.; Jindariani, S.; Junk, T. R.; Kephart, R.; Kilminster, B.; Lammel, S.; Lewis, J. D.; Lindgren, M.; Litvintsev, D. O.; Liu, T.; Lukens, P.; Madrak, R.; Maeshima, K.; Miao, T.; Mondragon, M. N.; Moore, R.; Fernandez, P. Movilla; Mukherjee, A.; Murat, P.; Nachtman, J.; Palencia, E.; Papadimitriou, V.; Patrick, J.; Pronko, A.; Ptohos, F.; Roser, R.; Rusu, V.; Rutherford, B.; Sato, K.; Schlabach, P.; Schmidt, E. E.; Sexton-Kennedy, L.; Slaughter, A. J.; Snider, F. D.; Suzuki, T.; Thom, J.; Tkaczyk, S.; Tonelli, D.; Torretta, D.; Velev, G.; Vidal, R.; Wagner, R. L.; Wester, W. C., III; Wicklund, E.; Wilson, P.; Wittich, P.; Wolbers, S.; Yeh, G. P.; Yi, K.; Yoh, J.; Yu, S. S.; Yun, J. C.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Carrillo, S.; Field, R.; Furic, I.; Goldschmidt, N.; Kar, D.; Klimenko, S.; Konigsberg, J.; Korytov, A.; Margaroli, F.; Mitselmakher, G.; Oksuzian, I.; Pinera, L.; Sukhanov, A.; Vazquez, F.] Univ Florida, Gainesville, FL 32611 USA.
[Annovi, A.; Cordelli, M.; Giromini, P.; Happacher, F.; Kim, M. J.; Torre, S.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
[Clark, A.; Garcia, J. E.; Vallecorsa, S.; Wu, X.] Univ Geneva, CH-1211 Geneva 4, Switzerland.
[Bussey, P.; Davies, T.; Martin, V.; Robson, A.; Denis, R. St.; Thompson, A. S.] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland.
[Chou, J. P.; Franklin, M.; Grinstein, S.; da Costa, J. Guimaraes; Mills, C.; Moed, S.] Harvard Univ, Cambridge, MA 02138 USA.
[Bridgeman, A.; Budd, S.; Carls, B.; Errede, D.; Errede, S.; Gerberich, H.; Grundler, U.; Liss, T. M.; Marino, C. P.; Neubauer, M. S.; Norniella, O.; Pitts, K.; Rogers, E.; Sfyrla, A.; Taffard, A.; Thompson, G. A.; Zhang, X.] Univ Illinois, Urbana, IL 61801 USA.
[Barnett, B. A.; Behari, S.; Blumenfeld, B.; Giurgiu, G.; Maksimovic, P.; Mathis, M.; Mumford, R.] Johns Hopkins Univ, Baltimore, MD 21218 USA.
[Chwalek, T.; Feindt, M.; Gessler, A.; Heck, M.; Heuser, J.; Hirschbuehl, D.; Kreps, M.; Kuhr, T.; Lueck, J.; Marino, C.; Milnik, M.; Morlock, J.; Muller, Th.; Neubauer, S.; Papaikonomou, A.; Peiffer, T.; Renz, M.; Richter, S.; Schmidt, A.; Wagner, W.; Wagner-Kuhr, J.; Weinelt, J.] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Seoul Natl Univ, Seoul 151742, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Sungkyunkwan Univ, Suwon 440746, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Korea Inst Sci & Technol Informat, Taejon 305806, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Chonnam Natl Univ, Kwangju 500757, South Korea.
[Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Yang, Y. C.; Yu, I.] Chonbuk Natl Univ, Jeonju 561756, South Korea.
[Barbaro-Galtieri, A.; Beringer, J.; Cerri, A.; Deisher, A.; Fang, H. C.; Haber, C.; Hsu, S. -C.; Lin, C. -S.; Lujan, P.; Lys, J.; Mulmenstadt, J.; Nielsen, J.; Volobouev, I.; Yao, W. M.] Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Houlden, M.; Manca, G.; McNulty, R.; Mehta, A.; Shears, T.] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England.
[Bartsch, V.; Beecher, D.; Bizjak, I.; Cerrito, L.; Lancaster, M.; Malik, S.; Nurse, E.; Vine, T.; Waters, D.] UCL, London WC1E 6BT, England.
[Calancha, C.; Fernandez, J. P.; Gonzalez, O.; Martinez-Ballarin, R.; Redondo, I.; Ttito-Guzman, P.; Vidal, M.] CIEMAT, E-28040 Madrid, Spain.
[Bauer, G.; Choudalakis, G.; Gomez-Ceballos, G.; Goncharov, M.; Hahn, K.; Henderson, C.; Knuteson, B.; Makhoul, K.; Paus, C.; Xie, S.] MIT, Cambridge, MA 02139 USA.
[Beauchemin, P. -H.; Buzatu, A.; Carron, S.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Spreitzer, T.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] McGill Univ, Inst Particle Phys, Montreal, PQ H3A 2T8, Canada.
[Beauchemin, P. -H.; Buzatu, A.; Carron, S.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Spreitzer, T.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] Simon Fraser Univ, Burnaby, BC V5A 1S6, Canada.
[Beauchemin, P. -H.; Buzatu, A.; Carron, S.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Spreitzer, T.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] Univ Toronto, Toronto, ON M5S 1A7, Canada.
[Beauchemin, P. -H.; Buzatu, A.; Carron, S.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Spreitzer, T.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] TRIUMF, Vancouver, BC V6T 2A3, Canada.
[Amidei, D.; Campbell, M.; Cully, J. C.; Gerdes, D.; Strycker, G. L.; Tecchio, M.; Varganov, A.; Wright, T.] Univ Michigan, Ann Arbor, MI 48109 USA.
[Bromberg, C.; Campanelli, M.; Gunay-Unalan, Z.; Hussein, M.; Huston, J.; Miller, R.; Sorin, V.; Tollefson, K.] Michigan State Univ, E Lansing, MI 48824 USA.
[Shreyber, I.] Inst Theoret & Expt Phys, Moscow 117259, Russia.
[Gold, M.; Gorelov, I.; Seidel, S.; Strologas, J.; Vogel, M.] Univ New Mexico, Albuquerque, NM 87131 USA.
[Anastassov, A.; Schmitt, M.; Shalhout, S. Z.; Stentz, D.] Northwestern Univ, Evanston, IL 60208 USA.
[Efron, J.; Hughes, R. E.; Lannon, K.; Parks, B.; Slaunwhite, J.; Winer, B. L.] Ohio State Univ, Columbus, OH 43210 USA.
[Nakano, I.; Takashima, R.; Tanaka, R.] Okayama Univ, Okayama 7008530, Japan.
[Kato, Y.; Okusawa, T.; Seiya, Y.; Wakisaka, T.; Yamamoto, K.; Yoshida, T.] Osaka City Univ, Osaka 588, Japan.
[Azfar, F.; Farrington, S.; Harper, S.; Hays, C.; Huffman, B. T.; Linacre, J.; Lyons, L.; Malde, S.; Oakes, L.; Pounder, N.; Rademacker, J.; Renton, P.] Univ Oxford, Oxford OX1 3RH, England.
[Amerio, S.; Bisello, D.; Busetto, G.; Compostella, G.; Cortiana, G.; Donini, J.; Dorigo, T.; Gresele, A.; Lazzizzera, I.; Loreti, M.; Lucchesi, D.; Griso, S. Pagan] Ist Nazl Fis Nucl, Sez Padova Trento, I-35131 Padua, Italy.
[Amerio, S.; Bisello, D.; Busetto, G.; Cortiana, G.; Gresele, A.; Lazzizzera, I.; Loreti, M.; Lucchesi, D.; Griso, S. Pagan] Univ Padua, I-35131 Padua, Italy.
[Ciobanu, C. I.; di Giovanni, G. P.; Savoy-Navarro, A.; Tourneur, S.] Univ Paris 06, CNRS, IN2P3, LPNHE,UMR7585, F-75252 Paris, France.
[Canepa, A.; Heijboer, A.; Heinrich, J.; Keung, J.; Kroll, J.; Lipeles, E.; Lockyer, N. S.; Neu, C.; Pianori, E.; Rodriguez, T.; Thomson, E.; Tu, Y.; Wagner, P.; Whiteson, D.; Williams, H. H.] Univ Penn, Philadelphia, PA 19104 USA.
[Barria, P.; Bedeschi, F.; Bellettini, G.; Carosi, R.; Catastini, P.; Cavaliere, V.; Ciocci, M. A.; Crescioli, F.; Dell'Orso, M.; Di Canto, A.; Donati, S.; Ferrazza, C.; Garosi, P.; Giannetti, P.; Giunta, M.; Introzzi, G.; Lami, S.; Latino, G.; Leone, S.; Menzione, A.; Morello, M. J.; Piacentino, G.; Punzi, G.; Ristori, L.; Sartori, L.; Scribano, A.; Scuri, F.; Sforza, F.; Squillacioti, P.; Trovato, M.; Turini, N.; Vataga, E.; Volpi, G.] Ist Nazl Fis Nucl, I-56127 Pisa, Italy.
[Bellettini, G.; Crescioli, F.; Dell'Orso, M.; Di Canto, A.; Donati, S.; Punzi, G.; Sforza, F.; Volpi, G.] Univ Pisa, I-56127 Pisa, Italy.
[Barria, P.; Catastini, P.; Cavaliere, V.; Ciocci, M. A.; Garosi, P.; Latino, G.; Scribano, A.; Squillacioti, P.; Turini, N.] Univ Siena, I-56127 Pisa, Italy.
[Ferrazza, C.; Trovato, M.; Vataga, E.] Scuola Normale Super Pisa, I-56127 Pisa, Italy.
[Boudreau, J.; Gibson, K.; Hartz, M.; Liu, C.; Rahaman, A.; Shepard, P. F.] Univ Pittsburgh, Pittsburgh, PA 15260 USA.
[Apresyan, A.; Barnes, V. E.; Bolla, G.; Bortoletto, D.; Flanagan, G.; Garfinkel, A. F.; Jones, M.; Laasanen, A. T.; Merkel, P.; Ranjan, N.; Sedov, A.] Purdue Univ, W Lafayette, IN 47907 USA.
[Bodek, A.; Boisvert, V.; Budd, H. S.; Chung, Y. S.; de Barbaro, P.; Gimmell, J. L.; Han, B. -Y.; Han, J. Y.; McFarland, K. S.; Sakumoto, W. K.; Yu, G. B.] Univ Rochester, Rochester, NY 14627 USA.
[Bhatti, A.; Demortier, L.; Goulianos, K.; Hatakeyama, K.; Lungu, G.; Mesropian, C.; Terashi, K.] Rockefeller Univ, New York, NY 10021 USA.
[De Cecco, S.; Dionisi, C.; Gallinaro, M.; Giagu, S.; Iori, M.; Luci, C.; Mastrandrea, P.; Rescigno, M.; Sarkar, S.; Zanello, L.] Ist Nazl Fis Nucl, Sez Roma 1, I-00185 Rome, Italy.
[Dionisi, C.; Giagu, S.; Iori, M.; Luci, C.; Sarkar, S.; Zanello, L.] Univ Roma La Sapienza, I-00185 Rome, Italy.
[Chuang, S. H.; Dube, S.; Halkiadakis, E.; Hare, D.; Lath, A.; Somalwar, S.] Rutgers State Univ, Piscataway, NJ 08855 USA.
[Aurisano, A.; Elagin, A.; Kamon, T.; Khotilovich, V.; Lee, E.; Lee, S. W.; McIntyre, P.; Safonov, A.; Toback, D.; Weinberger, M.] Texas A&M Univ, College Stn, TX 77843 USA.
[Cauz, D.; Di Ruzza, B.; Giordani, M.; Pagliarone, C.; Pauletta, G.; Penzo, A.; Rossi, M.; Santi, L.; Totaro, P.; Zanetti, A.] Ist Nazl Fis Nucl, I-34100 Trieste, Italy.
[Cauz, D.; Di Ruzza, B.; Giordani, M.; Pagliarone, C.; Pauletta, G.; Penzo, A.; Rossi, M.; Santi, L.; Totaro, P.; Zanetti, A.] Ist Nazl Fis Nucl, I-33100 Udine, Italy.
[Cauz, D.; Di Ruzza, B.; Giordani, M.; Pauletta, G.; Santi, L.; Totaro, P.] Univ Trieste Udine, I-33100 Udine, Italy.
[Akimoto, T.; Hara, K.; Kim, S. H.; Kimura, N.; Kubo, T.; Kurata, M.; Maruyama, T.; Masubuchi, T.; Miyake, H.; Nagai, Y.; Nagano, A.; Naganoma, J.; Nakamura, K.; Shimojima, M.; Takeuchi, Y.; Tomura, T.; Ukegawa, F.] Univ Tsukuba, Tsukuba, Ibaraki 305, Japan.
[Hare, M.; Napier, A.; Rolli, S.; Sliwa, K.; Whitehouse, B.] Tufts Univ, Medford, MA 02155 USA.
[Arisawa, T.; Kondo, K.; Yorita, K.] Waseda Univ, Tokyo 169, Japan.
[Harr, R. F.; Karchin, P. E.; Kulkarni, N. P.; Mattson, M. E.] Wayne State Univ, Detroit, MI 48201 USA.
[Bellinger, J.; Carlsmith, D.; Chung, W. H.; Herndon, M.; Nett, J.; Pondrom, L.; Pursley, J.; Ramakrishnan, V.; Shon, Y.] Univ Wisconsin, Madison, WI 53706 USA.
[Feild, R. G.; Husemann, U.; Loginov, A.; Martin, A.; Schmidt, M. P.; Stanitzki, M.; Tipton, P.] Yale Univ, New Haven, CT 06520 USA.
RP Aaltonen, T (reprint author), Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland.
RI Introzzi, Gianluca/K-2497-2015; Gorelov, Igor/J-9010-2015; Xie,
Si/O-6830-2016; Canelli, Florencia/O-9693-2016; Grinstein,
Sebastian/N-3988-2014; Paulini, Manfred/N-7794-2014; Russ,
James/P-3092-2014; unalan, zeynep/C-6660-2015; Lazzizzera,
Ignazio/E-9678-2015; vilar, rocio/P-8480-2014; Cabrera Urban,
Susana/H-1376-2015; Garcia, Jose /H-6339-2015; ciocci, maria agnese
/I-2153-2015; Cavalli-Sforza, Matteo/H-7102-2015; Chiarelli,
Giorgio/E-8953-2012; Muelmenstaedt, Johannes/K-2432-2015; Ruiz,
Alberto/E-4473-2011; Robson, Aidan/G-1087-2011; De Cecco,
Sandro/B-1016-2012; manca, giulia/I-9264-2012; Amerio,
Silvia/J-4605-2012; Punzi, Giovanni/J-4947-2012; Annovi,
Alberto/G-6028-2012; Ivanov, Andrew/A-7982-2013; Warburton,
Andreas/N-8028-2013; Kim, Soo-Bong/B-7061-2014; Lysak,
Roman/H-2995-2014; Moon, Chang-Seong/J-3619-2014; Scodellaro,
Luca/K-9091-2014;
OI Giordani, Mario/0000-0002-0792-6039; Casarsa,
Massimo/0000-0002-1353-8964; Vidal Marono, Miguel/0000-0002-2590-5987;
Latino, Giuseppe/0000-0002-4098-3502; iori,
maurizio/0000-0002-6349-0380; Lancaster, Mark/0000-0002-8872-7292;
Nielsen, Jason/0000-0002-9175-4419; Jun, Soon Yung/0000-0003-3370-6109;
Toback, David/0000-0003-3457-4144; Introzzi,
Gianluca/0000-0002-1314-2580; Gorelov, Igor/0000-0001-5570-0133; Xie,
Si/0000-0003-2509-5731; Canelli, Florencia/0000-0001-6361-2117;
Simonenko, Alexander/0000-0001-6580-3638; Lami,
Stefano/0000-0001-9492-0147; Margaroli, Fabrizio/0000-0002-3869-0153;
Group, Robert/0000-0002-4097-5254; Grinstein,
Sebastian/0000-0002-6460-8694; Paulini, Manfred/0000-0002-6714-5787;
Russ, James/0000-0001-9856-9155; unalan, zeynep/0000-0003-2570-7611;
Lazzizzera, Ignazio/0000-0001-5092-7531; ciocci, maria agnese
/0000-0003-0002-5462; Chiarelli, Giorgio/0000-0001-9851-4816;
Muelmenstaedt, Johannes/0000-0003-1105-6678; Ruiz,
Alberto/0000-0002-3639-0368; Punzi, Giovanni/0000-0002-8346-9052;
Annovi, Alberto/0000-0002-4649-4398; Ivanov, Andrew/0000-0002-9270-5643;
Warburton, Andreas/0000-0002-2298-7315; Moon,
Chang-Seong/0000-0001-8229-7829; Scodellaro, Luca/0000-0002-4974-8330;
Hays, Chris/0000-0003-2371-9723; Farrington, Sinead/0000-0001-5350-9271;
Robson, Aidan/0000-0002-1659-8284; Gallinaro,
Michele/0000-0003-1261-2277; Torre, Stefano/0000-0002-7565-0118; Turini,
Nicola/0000-0002-9395-5230; Osterberg, Kenneth/0000-0003-4807-0414
FU U.S. Department of Energy and National Science Foundation; Italian
Istituto Nazionale di Fisica Nucleare; Ministry of Education, Culture,
Sports, Science and Technology of Japan; Natural Sciences and
Engineering Research Council of Canada; National Science Council of the
Republic of China; Swiss National Science Foundation; A. P. Sloan
Foundation; Bundesministerium fur Bildung und Forschung, Germany; Korean
Science and Engineering Foundation and the Korean Research Foundation;
Science and Technology Facilities Council and the Royal Society, United
Kingdom; Institut National de Physique Nucleaire et Physique des
Particules/CNRS; Russian Foundation for Basic Research; Ministerio de
Ciencia e Innovacion; Slovak RD Agency; Academy of Finland
FX This work was supported by the U.S. Department of Energy and National
Science Foundation; the Italian Istituto Nazionale di Fisica Nucleare;
the Ministry of Education, Culture, Sports, Science and Technology of
Japan; the Natural Sciences and Engineering Research Council of Canada;
the National Science Council of the Republic of China; the Swiss
National Science Foundation; the A. P. Sloan Foundation; the
Bundesministerium fur Bildung und Forschung, Germany; the Korean Science
and Engineering Foundation and the Korean Research Foundation; the
Science and Technology Facilities Council and the Royal Society, United
Kingdom; the Institut National de Physique Nucleaire et Physique des
Particules/CNRS; the Russian Foundation for Basic Research; the
Ministerio de Ciencia e Innovacion, and Programa Consolider-Ingenio
2010, Spain; the Slovak R&D Agency; and the Academy of Finland.
NR 29
TC 12
Z9 12
U1 1
U2 9
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 5
AR 051104
DI 10.1103/PhysRevD.80.051104
PG 9
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501MB
UT WOS:000270384900004
ER
PT J
AU Abazov, VM
Abbott, B
Abolins, M
Acharya, BS
Adams, M
Adams, T
Aguilo, E
Ahsan, M
Alexeev, GD
Alkhazov, G
Alton, A
Alverson, G
Alves, GA
Ancu, LS
Anzelc, MS
Aoki, M
Arnoud, Y
Arov, M
Arthaud, M
Askew, A
Asman, B
Atramentov, O
Avila, C
BackusMayes, J
Badaud, F
Bagby, L
Baldin, B
Bandurin, DV
Banerjee, S
Barberis, E
Barfuss, AF
Bargassa, P
Baringer, P
Barreto, J
Bartlett, JF
Bassler, U
Bauer, D
Beale, S
Bean, A
Begalli, M
Begel, M
Belanger-Champagne, C
Bellantoni, L
Bellavance, A
Benitez, JA
Beri, SB
Bernardi, G
Bernhard, R
Bertram, I
Besancon, M
Beuselinck, R
Bezzubov, VA
Bhat, PC
Bhatnagar, V
Blazey, G
Blessing, S
Bloom, K
Boehnlein, A
Boline, D
Bolton, TA
Boos, EE
Borissov, G
Bose, T
Brandt, A
Brock, R
Brooijmans, G
Bross, A
Brown, D
Bu, XB
Buchholz, D
Buehler, M
Buescher, V
Bunichev, V
Burdin, S
Burnett, TH
Buszello, CP
Calfayan, P
Calpas, B
Calvet, S
Cammin, J
Carrasco-Lizarraga, MA
Carrera, E
Carvalho, W
Casey, BCK
Castilla-Valdez, H
Chakrabarti, S
Chakraborty, D
Chan, KM
Chandra, A
Cheu, E
Cho, DK
Cho, SW
Choi, S
Choudhary, B
Christoudias, T
Cihangir, S
Claes, D
Clutter, J
Cooke, M
Cooper, WE
Corcoran, M
Couderc, F
Cousinou, MC
Cutts, D
Cwiok, M
Das, A
Davies, G
De, K
de Jong, SJ
De La Cruz-Burelo, E
DeVaughan, K
Deliot, F
Demarteau, M
Demina, R
Denisov, D
Denisov, SP
Desai, S
Diehl, HT
Diesburg, M
Dominguez, A
Dorland, T
Dubey, A
Dudko, LV
Duflot, L
Duggan, D
Duperrin, A
Dutt, S
Dyshkant, A
Eads, M
Edmunds, D
Ellison, J
Elvira, VD
Enari, Y
Eno, S
Escalier, M
Evans, H
Evdokimov, A
Evdokimov, VN
Facini, G
Ferapontov, AV
Ferbel, T
Fiedler, F
Filthaut, F
Fisher, W
Fisk, HE
Fortner, M
Fox, H
Fu, S
Fuess, S
Gadfort, T
Galea, CF
Garcia-Bellido, A
Gavrilov, V
Gay, P
Geist, W
Geng, W
Gerber, CE
Gershtein, Y
Gillberg, D
Ginther, G
Gomez, B
Goussiou, A
Grannis, PD
Greder, S
Greenlee, H
Greenwood, ZD
Gregores, EM
Grenier, G
Gris, P
Grivaz, JF
Grohsjean, A
Grunendahl, S
Grunewald, MW
Guo, F
Guo, J
Gutierrez, G
Gutierrez, P
Haas, A
Haefner, P
Hagopian, S
Haley, J
Hall, I
Hall, RE
Han, L
Harder, K
Harel, A
Hauptman, JM
Hays, J
Hebbeker, T
Hedin, D
Hegeman, JG
Heinson, AP
Heintz, U
Hensel, C
Heredia-De La Cruz, I
Herner, K
Hesketh, G
Hildreth, MD
Hirosky, R
Hoang, T
Hobbs, JD
Hoeneisen, B
Hohlfeld, M
Hossain, S
Houben, P
Hu, Y
Hubacek, Z
Huske, N
Hynek, V
Iashvili, I
Illingworth, R
Ito, AS
Jabeen, S
Jaffre, M
Jain, S
Jakobs, K
Jamin, D
Jesik, R
Johns, K
Johnson, C
Johnson, M
Johnston, D
Jonckheere, A
Jonsson, P
Juste, A
Kajfasz, E
Karmanov, D
Kasper, PA
Katsanos, I
Kaushik, V
Kehoe, R
Kermiche, S
Khalatyan, N
Khanov, A
Kharchilava, A
Kharzheev, YN
Khatidze, D
Kirby, MH
Kirsch, M
Klima, B
Kohli, JM
Konrath, JP
Kozelov, AV
Kraus, J
Kuhl, T
Kumar, A
Kupco, A
Kurca, T
Kuzmin, VA
Kvita, J
Lacroix, F
Lam, D
Lammers, S
Landsberg, G
Lebrun, P
Lee, HS
Lee, WM
Leflat, A
Lellouch, J
Li, L
Li, QZ
Lietti, SM
Lim, JK
Lincoln, D
Linnemann, J
Lipaev, VV
Lipton, R
Liu, Y
Liu, Z
Lobodenko, A
Lokajicek, M
Love, P
Lubatti, HJ
Luna-Garcia, R
Lyon, AL
Maciel, AKA
Mackin, D
Mattig, P
Magana-Villalba, R
Mal, PK
Malik, S
Malyshev, VL
Maravin, Y
Martin, B
McCarthy, R
McGivern, CL
Meijer, MM
Melnitchouk, A
Mendoza, L
Menezes, D
Mercadante, PG
Merkin, M
Merritt, KW
Meyer, A
Meyer, J
Mondal, NK
Moore, RW
Moulik, T
Muanza, GS
Mulhearn, M
Mundal, O
Mundim, L
Nagy, E
Naimuddin, M
Narain, M
Neal, HA
Negret, JP
Neustroev, P
Nilsen, H
Nogima, H
Novaes, SF
Nunnemann, T
Obrant, G
Ochando, C
Onoprienko, D
Orduna, J
Oshima, N
Osman, N
Osta, J
Otec, R
Garzon, GJOY
Owen, M
Padilla, M
Padley, P
Pangilinan, M
Parashar, N
Park, SJ
Park, SK
Parsons, J
Partridge, R
Parua, N
Patwa, A
Penning, B
Perfilov, M
Peters, K
Peters, Y
Petroff, P
Piegaia, R
Piper, J
Pleier, MA
Podesta-Lerma, PLM
Podstavkov, VM
Pogorelov, Y
Pol, ME
Polozov, P
Popov, AV
Prewitt, M
Protopopescu, S
Qian, J
Quadt, A
Quinn, B
Rakitine, A
Rangel, MS
Ranjan, K
Ratoff, PN
Renkel, P
Rich, P
Rijssenbeek, M
Ripp-Baudot, I
Rizatdinova, F
Robinson, S
Rominsky, M
Royon, C
Rubinov, P
Ruchti, R
Safronov, G
Sajot, G
Sanchez-Hernandez, A
Sanders, MP
Sanghi, B
Savage, G
Sawyer, L
Scanlon, T
Schaile, D
Schamberger, RD
Scheglov, Y
Schellman, H
Schliephake, T
Schlobohm, S
Schwanenberger, C
Schwienhorst, R
Sekaric, J
Severini, H
Shabalina, E
Shamim, M
Shary, V
Shchukin, AA
Shivpuri, RK
Siccardi, V
Simak, V
Sirotenko, V
Skubic, P
Slattery, P
Smirnov, D
Snow, GR
Snow, J
Snyder, S
Soldner-Rembold, S
Sonnenschein, L
Sopczak, A
Sosebee, M
Soustruznik, K
Spurlock, B
Stark, J
Stolin, V
Stoyanova, DA
Strandberg, J
Strang, MA
Strauss, E
Strauss, M
Strohmer, R
Strom, D
Stutte, L
Sumowidagdo, S
Svoisky, P
Takahashi, M
Tanasijczuk, A
Taylor, W
Tiller, B
Titov, M
Tokmenin, VV
Torchiani, I
Tsybychev, D
Tuchming, B
Tully, C
Tuts, PM
Unalan, R
Uvarov, L
Uvarov, S
Uzunyan, S
van den Berg, PJ
Van Kooten, R
van Leeuwen, WM
Varelas, N
Varnes, EW
Vasilyev, IA
Verdier, P
Vertogradov, LS
Verzocchi, M
Vesterinen, M
Vilanova, D
Vint, P
Vokac, P
Wagner, R
Wahl, HD
Wang, MHLS
Warchol, J
Watts, G
Wayne, M
Weber, G
Weber, M
Welty-Rieger, L
Wenger, A
Wetstein, M
White, A
Wicke, D
Williams, MRJ
Wilson, GW
Wimpenny, SJ
Wobisch, M
Wood, DR
Wyatt, TR
Xie, Y
Xu, C
Yacoob, S
Yamada, R
Yang, WC
Yasuda, T
Yatsunenko, YA
Ye, Z
Yin, H
Yip, K
Yoo, HD
Youn, SW
Yu, J
Zeitnitz, C
Zelitch, S
Zhao, T
Zhou, B
Zhu, J
Zielinski, M
Zieminska, D
Zivkovic, L
Zutshi, V
Zverev, EG
AF Abazov, V. M.
Abbott, B.
Abolins, M.
Acharya, B. S.
Adams, M.
Adams, T.
Aguilo, E.
Ahsan, M.
Alexeev, G. D.
Alkhazov, G.
Alton, A.
Alverson, G.
Alves, G. A.
Ancu, L. S.
Anzelc, M. S.
Aoki, M.
Arnoud, Y.
Arov, M.
Arthaud, M.
Askew, A.
Asman, B.
Atramentov, O.
Avila, C.
BackusMayes, J.
Badaud, F.
Bagby, L.
Baldin, B.
Bandurin, D. V.
Banerjee, S.
Barberis, E.
Barfuss, A. -F.
Bargassa, P.
Baringer, P.
Barreto, J.
Bartlett, J. F.
Bassler, U.
Bauer, D.
Beale, S.
Bean, A.
Begalli, M.
Begel, M.
Belanger-Champagne, C.
Bellantoni, L.
Bellavance, A.
Benitez, J. A.
Beri, S. B.
Bernardi, G.
Bernhard, R.
Bertram, I.
Besancon, M.
Beuselinck, R.
Bezzubov, V. A.
Bhat, P. C.
Bhatnagar, V.
Blazey, G.
Blessing, S.
Bloom, K.
Boehnlein, A.
Boline, D.
Bolton, T. A.
Boos, E. E.
Borissov, G.
Bose, T.
Brandt, A.
Brock, R.
Brooijmans, G.
Bross, A.
Brown, D.
Bu, X. B.
Buchholz, D.
Buehler, M.
Buescher, V.
Bunichev, V.
Burdin, S.
Burnett, T. H.
Buszello, C. P.
Calfayan, P.
Calpas, B.
Calvet, S.
Cammin, J.
Carrasco-Lizarraga, M. A.
Carrera, E.
Carvalho, W.
Casey, B. C. K.
Castilla-Valdez, H.
Chakrabarti, S.
Chakraborty, D.
Chan, K. M.
Chandra, A.
Cheu, E.
Cho, D. K.
Cho, S. W.
Choi, S.
Choudhary, B.
Christoudias, T.
Cihangir, S.
Claes, D.
Clutter, J.
Cooke, M.
Cooper, W. E.
Corcoran, M.
Couderc, F.
Cousinou, M. -C.
Cutts, D.
Cwiok, M.
Das, A.
Davies, G.
De, K.
de Jong, S. J.
De La Cruz-Burelo, E.
DeVaughan, K.
Deliot, F.
Demarteau, M.
Demina, R.
Denisov, D.
Denisov, S. P.
Desai, S.
Diehl, H. T.
Diesburg, M.
Dominguez, A.
Dorland, T.
Dubey, A.
Dudko, L. V.
Duflot, L.
Duggan, D.
Duperrin, A.
Dutt, S.
Dyshkant, A.
Eads, M.
Edmunds, D.
Ellison, J.
Elvira, V. D.
Enari, Y.
Eno, S.
Escalier, M.
Evans, H.
Evdokimov, A.
Evdokimov, V. N.
Facini, G.
Ferapontov, A. V.
Ferbel, T.
Fiedler, F.
Filthaut, F.
Fisher, W.
Fisk, H. E.
Fortner, M.
Fox, H.
Fu, S.
Fuess, S.
Gadfort, T.
Galea, C. F.
Garcia-Bellido, A.
Gavrilov, V.
Gay, P.
Geist, W.
Geng, W.
Gerber, C. E.
Gershtein, Y.
Gillberg, D.
Ginther, G.
Gomez, B.
Goussiou, A.
Grannis, P. D.
Greder, S.
Greenlee, H.
Greenwood, Z. D.
Gregores, E. M.
Grenier, G.
Gris, Ph.
Grivaz, J. -F.
Grohsjean, A.
Gruenendahl, S.
Gruenewald, M. W.
Guo, F.
Guo, J.
Gutierrez, G.
Gutierrez, P.
Haas, A.
Haefner, P.
Hagopian, S.
Haley, J.
Hall, I.
Hall, R. E.
Han, L.
Harder, K.
Harel, A.
Hauptman, J. M.
Hays, J.
Hebbeker, T.
Hedin, D.
Hegeman, J. G.
Heinson, A. P.
Heintz, U.
Hensel, C.
Heredia-De La Cruz, I.
Herner, K.
Hesketh, G.
Hildreth, M. D.
Hirosky, R.
Hoang, T.
Hobbs, J. D.
Hoeneisen, B.
Hohlfeld, M.
Hossain, S.
Houben, P.
Hu, Y.
Hubacek, Z.
Huske, N.
Hynek, V.
Iashvili, I.
Illingworth, R.
Ito, A. S.
Jabeen, S.
Jaffre, M.
Jain, S.
Jakobs, K.
Jamin, D.
Jesik, R.
Johns, K.
Johnson, C.
Johnson, M.
Johnston, D.
Jonckheere, A.
Jonsson, P.
Juste, A.
Kajfasz, E.
Karmanov, D.
Kasper, P. A.
Katsanos, I.
Kaushik, V.
Kehoe, R.
Kermiche, S.
Khalatyan, N.
Khanov, A.
Kharchilava, A.
Kharzheev, Y. N.
Khatidze, D.
Kirby, M. H.
Kirsch, M.
Klima, B.
Kohli, J. M.
Konrath, J. -P.
Kozelov, A. V.
Kraus, J.
Kuhl, T.
Kumar, A.
Kupco, A.
Kurca, T.
Kuzmin, V. A.
Kvita, J.
Lacroix, F.
Lam, D.
Lammers, S.
Landsberg, G.
Lebrun, P.
Lee, H. S.
Lee, W. M.
Leflat, A.
Lellouch, J.
Li, L.
Li, Q. Z.
Lietti, S. M.
Lim, J. K.
Lincoln, D.
Linnemann, J.
Lipaev, V. V.
Lipton, R.
Liu, Y.
Liu, Z.
Lobodenko, A.
Lokajicek, M.
Love, P.
Lubatti, H. J.
Luna-Garcia, R.
Lyon, A. L.
Maciel, A. K. A.
Mackin, D.
Maettig, P.
Magana-Villalba, R.
Mal, P. K.
Malik, S.
Malyshev, V. L.
Maravin, Y.
Martin, B.
McCarthy, R.
McGivern, C. L.
Meijer, M. M.
Melnitchouk, A.
Mendoza, L.
Menezes, D.
Mercadante, P. G.
Merkin, M.
Merritt, K. W.
Meyer, A.
Meyer, J.
Mondal, N. K.
Moore, R. W.
Moulik, T.
Muanza, G. S.
Mulhearn, M.
Mundal, O.
Mundim, L.
Nagy, E.
Naimuddin, M.
Narain, M.
Neal, H. A.
Negret, J. P.
Neustroev, P.
Nilsen, H.
Nogima, H.
Novaes, S. F.
Nunnemann, T.
Obrant, G.
Ochando, C.
Onoprienko, D.
Orduna, J.
Oshima, N.
Osman, N.
Osta, J.
Otec, R.
Otero y Garzon, G. J.
Owen, M.
Padilla, M.
Padley, P.
Pangilinan, M.
Parashar, N.
Park, S. -J.
Park, S. K.
Parsons, J.
Partridge, R.
Parua, N.
Patwa, A.
Penning, B.
Perfilov, M.
Peters, K.
Peters, Y.
Petroff, P.
Piegaia, R.
Piper, J.
Pleier, M. -A.
Podesta-Lerma, P. L. M.
Podstavkov, V. M.
Pogorelov, Y.
Pol, M. -E.
Polozov, P.
Popov, A. V.
Prewitt, M.
Protopopescu, S.
Qian, J.
Quadt, A.
Quinn, B.
Rakitine, A.
Rangel, M. S.
Ranjan, K.
Ratoff, P. N.
Renkel, P.
Rich, P.
Rijssenbeek, M.
Ripp-Baudot, I.
Rizatdinova, F.
Robinson, S.
Rominsky, M.
Royon, C.
Rubinov, P.
Ruchti, R.
Safronov, G.
Sajot, G.
Sanchez-Hernandez, A.
Sanders, M. P.
Sanghi, B.
Savage, G.
Sawyer, L.
Scanlon, T.
Schaile, D.
Schamberger, R. D.
Scheglov, Y.
Schellman, H.
Schliephake, T.
Schlobohm, S.
Schwanenberger, C.
Schwienhorst, R.
Sekaric, J.
Severini, H.
Shabalina, E.
Shamim, M.
Shary, V.
Shchukin, A. A.
Shivpuri, R. K.
Siccardi, V.
Simak, V.
Sirotenko, V.
Skubic, P.
Slattery, P.
Smirnov, D.
Snow, G. R.
Snow, J.
Snyder, S.
Soeldner-Rembold, S.
Sonnenschein, L.
Sopczak, A.
Sosebee, M.
Soustruznik, K.
Spurlock, B.
Stark, J.
Stolin, V.
Stoyanova, D. A.
Strandberg, J.
Strang, M. A.
Strauss, E.
Strauss, M.
Stroehmer, R.
Strom, D.
Stutte, L.
Sumowidagdo, S.
Svoisky, P.
Takahashi, M.
Tanasijczuk, A.
Taylor, W.
Tiller, B.
Titov, M.
Tokmenin, V. V.
Torchiani, I.
Tsybychev, D.
Tuchming, B.
Tully, C.
Tuts, P. M.
Unalan, R.
Uvarov, L.
Uvarov, S.
Uzunyan, S.
van den Berg, P. J.
Van Kooten, R.
van Leeuwen, W. M.
Varelas, N.
Varnes, E. W.
Vasilyev, I. A.
Verdier, P.
Vertogradov, L. S.
Verzocchi, M.
Vesterinen, M.
Vilanova, D.
Vint, P.
Vokac, P.
Wagner, R.
Wahl, H. D.
Wang, M. H. L. S.
Warchol, J.
Watts, G.
Wayne, M.
Weber, G.
Weber, M.
Welty-Rieger, L.
Wenger, A.
Wetstein, M.
White, A.
Wicke, D.
Williams, M. R. J.
Wilson, G. W.
Wimpenny, S. J.
Wobisch, M.
Wood, D. R.
Wyatt, T. R.
Xie, Y.
Xu, C.
Yacoob, S.
Yamada, R.
Yang, W. -C.
Yasuda, T.
Yatsunenko, Y. A.
Ye, Z.
Yin, H.
Yip, K.
Yoo, H. D.
Youn, S. W.
Yu, J.
Zeitnitz, C.
Zelitch, S.
Zhao, T.
Zhou, B.
Zhu, J.
Zielinski, M.
Zieminska, D.
Zivkovic, L.
Zutshi, V.
Zverev, E. G.
TI Measurement of trilinear gauge boson couplings from WW plus WZ -> lvjj
events in p(p)over-bar collisions at root s=1.96 TeV
SO PHYSICAL REVIEW D
LA English
DT Article
ID ELECTROWEAK VECTOR BOSONS; UNITARITY CONSTRAINTS; SYMMETRY-BREAKING;
STANDARD MODEL; HIGGS BOSONS; PHYSICS; SUPERSYMMETRY; DETECTOR; SECTOR;
MASS
AB We present a direct measurement of trilinear gauge boson couplings at gamma WW and ZWW vertices inWW and WZ events produced in p (p) over bar collisions at root s = 1:96 TeV. We consider events with one electron or muon, missing transverse energy, and at least two jets. The data were collected using the D0 detector and correspond to 1:1 fb(-1) of integrated luminosity. Considering two different relations between the couplings at the gamma WW and ZWW vertices, we measure these couplings at 68% C.L. to be kappa(gamma) = 1.07(-0.29)(+0.26) lambda = 0.00(-0.06)(+0.00), and g(1)(Z) = 1.04(-0.09)(+0.09) in a scenario respecting SU(2)(L) circle times U(1)(Y) gauge symmetry and kappa = 1.04(-0.11)(+0.11) and lambda = 0.00(-0.06)(+0.06) in an "equal couplings'' scenario.
C1 [Abazov, V. M.; Alexeev, G. D.; Kharzheev, Y. N.; Malyshev, V. L.; Tokmenin, V. V.; Vertogradov, L. S.; Yatsunenko, Y. A.] Joint Inst Nucl Res, Dubna, Russia.
[Alves, G. A.; Barreto, J.; Maciel, A. K. A.; Pol, M. -E.] Ctr Brasileiro Pesquisas Fis, LAFEX, Rio De Janeiro, Brazil.
[Begalli, M.; Carvalho, W.; Mundim, L.; Nogima, H.] Univ Estado Rio de Janeiro, BR-20550011 Rio De Janeiro, Brazil.
[Gregores, E. M.] Univ Fed ABC, Santo Andre, Brazil.
[Lietti, S. M.; Mercadante, P. G.; Novaes, S. F.] Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil.
[Aguilo, E.; Beale, S.; Gillberg, D.; Liu, Z.; Moore, R. W.; Taylor, W.] Univ Alberta, Edmonton, AB, Canada.
[Beale, S.; Gillberg, D.; Liu, Z.; Moore, R. W.; Taylor, W.] Simon Fraser Univ, Burnaby, BC V5A 1S6, Canada.
[Beale, S.; Gillberg, D.; Liu, Z.; Taylor, W.] York Univ, Toronto, ON M3J 2R7, Canada.
[Beale, S.; Gillberg, D.; Liu, Z.; Moore, R. W.; Taylor, W.] McGill Univ, Montreal, PQ, Canada.
[Bu, X. B.; Han, L.; Liu, Y.; Yin, H.] Univ Sci & Technol China, Hefei 230026, Peoples R China.
[Gomez, B.; Mendoza, L.; Negret, J. P.] Univ Los Andes, Bogota, Colombia.
[Kvita, J.; Soustruznik, K.] Charles Univ Prague, Fac Math & Phys, Ctr Particle Phys, Prague, Czech Republic.
[Hubacek, Z.; Hynek, V.; Otec, R.; Simak, V.; Vokac, P.] Czech Tech Univ, CR-16635 Prague, Czech Republic.
[Kupco, A.; Lacroix, F.; Lokajicek, M.] Acad Sci Czech Republic, Inst Phys, Ctr Particle Phys, Prague, Czech Republic.
[Hoeneisen, B.] Univ San Francisco Quito, Quito, Ecuador.
[Badaud, F.; Bernardi, G.; Gay, P.; Gris, Ph.] Univ Clermont Ferrand, LPC, CNRS, IN2P3, Clermont, France.
[Arnoud, Y.; Martin, B.; Sajot, G.; Stark, J.] Univ Grenoble 1, LPSC, CNRS, IN2P3,Inst Natl Polytech Grenoble, Grenoble, France.
[Barfuss, A. -F.; Calpas, B.; Cousinou, M. -C.; Cutts, D.; Duperrin, A.; Escalier, M.; Geng, W.; Jamin, D.; Kajfasz, E.; Kermiche, S.; Muanza, G. S.; Nagy, E.] Aix Marseille Univ, CPPM, CNRS, IN2P3, Marseille, France.
[Calvet, S.; Duflot, L.; Grivaz, J. -F.; Jaffre, M.; Ochando, C.; Petroff, P.; Rangel, M. S.] Univ Paris 11, LAL, IN2P3, CNRS, Orsay, France.
[Avila, C.; Huske, N.; Lellouch, J.] Univ Paris 06, CNRS, LPNHE, IN2P3, Paris, France.
Univ Paris 07, CNRS, LPNHE, IN2P3, Paris, France.
[Arthaud, M.; Bassler, U.; Besancon, M.; Couderc, F.; Deliot, F.; Grohsjean, A.; Royon, C.; Shary, V.; Titov, M.; Tuchming, B.; Vilanova, D.] SPP, CEA, Irfu, Saclay, France.
[Brown, D.; Geist, W.; Greder, S.; Ripp-Baudot, I.; Siccardi, V.] Univ Strasbourg, IPHC, CNRS, IN2P3, Strasbourg, France.
[Grenier, G.] Univ Lyon 1, IPNL, CNRS, IN2P3, Villeurbanne, France.
[Grenier, G.; Kurca, T.; Lebrun, P.; Verdier, P.] Univ Lyon, Lyon, France.
[Hebbeker, T.; Kirsch, M.; Meyer, A.; Sonnenschein, L.] Rhein Westfal TH Aachen, Phys Inst A3, Aachen, Germany.
[Buescher, V.; Hohlfeld, M.; Mundal, O.; Pleier, M. -A.] Univ Bonn, Inst Phys, D-5300 Bonn, Germany.
[Bernhard, R.; Jakobs, K.; Konrath, J. -P.; Nilsen, H.; Penning, B.; Torchiani, I.; Wenger, A.] Univ Freiburg, Inst Phys, Freiburg, Germany.
[Hensel, C.; Meyer, J.; Park, S. -J.; Quadt, A.; Shabalina, E.] Univ Gottingen, Inst Phys 2, Gottingen, Germany.
[Fiedler, F.; Kuhl, T.; Weber, G.; Wicke, D.] Johannes Gutenberg Univ Mainz, Inst Phys, D-6500 Mainz, Germany.
[Calfayan, P.; Haefner, P.; Neustroev, P.; Nunnemann, T.; Sanders, M. P.; Schaile, D.; Stroehmer, R.; Tiller, B.] Univ Munich, Munich, Germany.
[Maettig, P.; Schliephake, T.; Zeitnitz, C.] Univ Wuppertal, Fachbereich Phys, Wuppertal, Germany.
[Beri, S. B.; Bhatnagar, V.; Dutt, S.; Kohli, J. M.] Panjab Univ, Chandigarh 160014, India.
[Choudhary, B.; Dubey, A.; Ranjan, K.; Shivpuri, R. K.] Univ Delhi, Delhi 110007, India.
[Acharya, B. S.; Banerjee, S.; Mondal, N. K.] Tata Inst Fundamental Res, Mumbai 400005, Maharashtra, India.
[Cwiok, M.; Gruenewald, M. W.] Univ Coll Dublin, Dublin 2, Ireland.
[Cho, S. W.; Lee, H. S.; Lim, J. K.; Park, S. K.] Korea Univ, Korea Detector Lab, Seoul, South Korea.
[Choi, S.] Sungkyunkwan Univ, Suwon, South Korea.
[Carrasco-Lizarraga, M. A.; Castilla-Valdez, H.; De La Cruz-Burelo, E.; Heredia-De La Cruz, I.; Luna-Garcia, R.; Magana-Villalba, R.; Orduna, J.; Podesta-Lerma, P. L. M.; Sanchez-Hernandez, A.] CINVESTAV, Mexico City 14000, DF, Mexico.
[Hegeman, J. G.] FOM Inst NIKHEF, Amsterdam, Netherlands.
[Houben, P.; van den Berg, P. J.; van Leeuwen, W. M.] Univ Amsterdam, NIKHEF, Amsterdam, Netherlands.
[Ancu, L. S.; de Jong, S. J.; Filthaut, F.; Galea, C. F.; Meijer, M. M.; Svoisky, P.] Radboud Univ Nijmegen, NIKHEF, NL-6525 ED Nijmegen, Netherlands.
[Gavrilov, V.; Polozov, P.; Safronov, G.; Stolin, V.] Inst Theoret & Expt Phys, Moscow 117259, Russia.
[Borissov, G.; Bunichev, V.; Dudko, L. V.; Karmanov, D.; Kuzmin, V. A.; Leflat, A.; Merkin, M.; Perfilov, M.; Zverev, E. G.] Moscow MV Lomonosov State Univ, Moscow, Russia.
[Bezzubov, V. A.; Denisov, S. P.; Evdokimov, V. N.; Kozelov, A. V.; Lipaev, V. V.; Popov, A. V.; Shchukin, A. A.; Stoyanova, D. A.; Vasilyev, I. A.] Inst High Energy Phys, Protvino, Russia.
[Alkhazov, G.; Lobodenko, A.; Neustroev, P.; Obrant, G.; Scheglov, Y.; Uvarov, S.] Petersburg Nucl Phys Inst, St Petersburg, Russia.
[Belanger-Champagne, C.] Stockholm Univ, S-10691 Stockholm, Sweden.
[Asman, B.] Uppsala Univ, Uppsala, Sweden.
[Bertram, I.; Burdin, S.; Fox, H.; Love, P.; Rakitine, A.; Ratoff, P. N.; Sopczak, A.; Williams, M. R. J.] Univ Lancaster, Lancaster, England.
[Bauer, D.; Beuselinck, R.; Buszello, C. P.; Carrera, E.; Christoudias, T.; Davies, G.; Hays, J.; Jesik, R.; Jonsson, P.; Juste, A.; Osman, N.; Robinson, S.; Scanlon, T.; Vint, P.] Univ London Imperial Coll Sci Technol & Med, London, England.
[Harder, K.; Owen, M.; Peters, K.; Peters, Y.; Rich, P.; Schwanenberger, C.; Soeldner-Rembold, S.; Takahashi, M.; Vesterinen, M.; Yang, W. -C.] Univ Manchester, Manchester, Lancs, England.
[Cheu, E.; Das, A.; Johns, K.; Mal, P. K.; Varnes, E. W.] Univ Arizona, Tucson, AZ 85721 USA.
Calif State Univ Fresno, Fresno, CA 93740 USA.
[Alton, A.; Chandra, A.; Ellison, J.; Heinson, A. P.; Li, L.; Padilla, M.; Wimpenny, S. J.] Univ Calif Riverside, Riverside, CA 92521 USA.
[Adams, T.; Askew, A.; Atramentov, O.; Blessing, S.; Carrera, E.; Duggan, D.; Gershtein, Y.; Hagopian, S.; Hoang, T.; Sekaric, J.; Sumowidagdo, S.; Wahl, H. D.] Florida State Univ, Tallahassee, FL 32306 USA.
[Aoki, M.; Baldin, B.; Bartlett, J. F.; Bellantoni, L.; Bellavance, A.; Bhat, P. C.; Boehnlein, A.; Bross, A.; Casey, B. C. K.; Cihangir, S.; Cooke, M.; Cooper, W. E.; Demarteau, M.; Denisov, D.; Desai, S.; Diehl, H. T.; Diesburg, M.; Elvira, V. D.; Fisher, W.; Fisk, H. E.; Fu, S.; Fuess, S.; Ginther, G.; Greenlee, H.; Gruenendahl, S.; Gutierrez, G.; Illingworth, R.; Ito, A. S.; Johnson, M.; Jonckheere, A.; Kasper, P. A.; Khalatyan, N.; Klima, B.; Lee, W. M.; Li, Q. Z.; Lincoln, D.; Lipton, R.; Lyon, A. L.; Merritt, K. W.; Naimuddin, M.; Oshima, N.; Podstavkov, V. M.; Rubinov, P.; Sanghi, B.; Savage, G.; Sirotenko, V.; Stutte, L.; Verzocchi, M.; Weber, M.; Yamada, R.; Yasuda, T.; Ye, Z.; Youn, S. W.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Adams, M.; Gerber, C. E.; Strom, D.; Unalan, R.; Varelas, N.] Univ Illinois, Chicago, IL 60607 USA.
[Blazey, G.; Chakraborty, D.; Dyshkant, A.; Fortner, M.; Hedin, D.; Menezes, D.; Uzunyan, S.; Zutshi, V.] No Illinois Univ, De Kalb, IL 60115 USA.
[Anzelc, M. S.; Buchholz, D.; Kirby, M. H.; Schellman, H.; Yacoob, S.] Northwestern Univ, Evanston, IL 60208 USA.
[Evans, H.; Lammers, S.; Parua, N.; Van Kooten, R.; Welty-Rieger, L.; Zieminska, D.] Indiana Univ, Bloomington, IN 47405 USA.
[Chandra, A.; Hildreth, M. D.; Lam, D.; Osta, J.; Pogorelov, Y.; Ruchti, R.; Smirnov, D.; Warchol, J.; Wayne, M.] Univ Notre Dame, Notre Dame, IN 46556 USA.
[Parashar, N.] Purdue Univ Calumet, Hammond, IN 46323 USA.
[Hauptman, J. M.] Iowa State Univ, Ames, IA 50011 USA.
[Baringer, P.; Bean, A.; Clutter, J.; McGivern, C. L.; Moulik, T.; Wilson, G. W.] Univ Kansas, Lawrence, KS 66045 USA.
[Ahsan, M.; Bandurin, D. V.; Bolton, T. A.; Ferapontov, A. V.; Maravin, Y.; Onoprienko, D.; Shamim, M.] Kansas State Univ, Manhattan, KS 66506 USA.
[Arov, M.; Greenwood, Z. D.; Sawyer, L.; Wobisch, M.] Louisiana Tech Univ, Ruston, LA 71272 USA.
[Eno, S.; Ferbel, T.; Wetstein, M.] Univ Maryland, College Pk, MD 20742 USA.
[Boline, D.; Bose, T.; Cho, D. K.; Heintz, U.; Jabeen, S.] Boston Univ, Boston, MA 02215 USA.
[Alverson, G.; Barberis, E.; Facini, G.; Hesketh, G.; Wood, D. R.] Northeastern Univ, Boston, MA 02115 USA.
[Alton, A.; Herner, K.; Neal, H. A.; Qian, J.; Strandberg, J.; Xu, C.; Zhou, B.] Univ Michigan, Ann Arbor, MI 48109 USA.
[Abolins, M.; Benitez, J. A.; Brock, R.; Edmunds, D.; Geng, W.; Hall, R. E.; Kraus, J.; Linnemann, J.; Piper, J.; Schwienhorst, R.] Michigan State Univ, E Lansing, MI 48824 USA.
[Melnitchouk, A.; Quinn, B.] Univ Mississippi, University, MS 38677 USA.
[Bloom, K.; Claes, D.; DeVaughan, K.; Dominguez, A.; Eads, M.; Johnston, D.; Katsanos, I.; Malik, S.; Snow, G. R.] Univ Nebraska, Lincoln, NE 68588 USA.
[Haley, J.; Tully, C.; Wagner, R.] Princeton Univ, Princeton, NJ 08544 USA.
[Iashvili, I.; Kharchilava, A.; Kumar, A.; Strang, M. A.] SUNY Buffalo, Buffalo, NY 14260 USA.
[Brooijmans, G.; Gadfort, T.; Haas, A.; Johnson, C.; Mulhearn, M.; Parsons, J.; Zivkovic, L.] Columbia Univ, New York, NY 10027 USA.
[Cammin, J.; Demina, R.; Ferbel, T.; Garcia-Bellido, A.; Ginther, G.; Harel, A.; Slattery, P.; Wang, M. H. L. S.; Zielinski, M.] Univ Rochester, Rochester, NY 14627 USA.
[Chakrabarti, S.; Fortner, M.; Guo, F.; Guo, J.; Hobbs, J. D.; Hu, Y.; McCarthy, R.; Rijssenbeek, M.; Schamberger, R. D.; Strauss, E.; Tsybychev, D.; Zhu, J.] SUNY Stony Brook, Stony Brook, NY 11794 USA.
[Begel, M.; Evdokimov, A.; Patwa, A.; Protopopescu, S.; Snyder, S.; Yip, K.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Snow, G. R.; Snow, J.] Langston Univ, Langston, OK 73050 USA.
[Abbott, B.; Gutierrez, P.; Hossain, S.; Jain, S.; Rominsky, M.; Severini, H.; Skubic, P.; Strauss, M.] Univ Oklahoma, Norman, OK 73019 USA.
[Khanov, A.; Rizatdinova, F.] Oklahoma State Univ, Stillwater, OK 74078 USA.
[Enari, Y.; Khatidze, D.; Landsberg, G.; Narain, M.; Pangilinan, M.; Partridge, R.; Xie, Y.; Yoo, H. D.] Brown Univ, Providence, RI 02912 USA.
[Brandt, A.; De, K.; Kaushik, V.; Sosebee, M.; Spurlock, B.; White, A.; Yu, J.] Univ Texas Arlington, Arlington, TX 76019 USA.
[Kehoe, R.; Renkel, P.] So Methodist Univ, Dallas, TX 75275 USA.
[Bargassa, P.; Corcoran, M.; Mackin, D.; Padley, P.; Prewitt, M.] Rice Univ, Houston, TX 77005 USA.
[Buehler, M.; Hirosky, R.; Zelitch, S.] Univ Virginia, Charlottesville, VA 22901 USA.
[BackusMayes, J.; Burnett, T. H.; Dorland, T.; Goussiou, A.; Lubatti, H. J.; Schlobohm, S.; Watts, G.; Zhao, T.] Univ Washington, Seattle, WA 98195 USA.
[Otero y Garzon, G. J.; Piegaia, R.; Tanasijczuk, A.] Univ Buenos Aires, Buenos Aires, DF, Argentina.
RP Benitez, JA (reprint author), Joint Inst Nucl Res, Dubna, Russia.
RI Fisher, Wade/N-4491-2013; De, Kaushik/N-1953-2013; Ancu, Lucian
Stefan/F-1812-2010; Alves, Gilvan/C-4007-2013; Deliot,
Frederic/F-3321-2014; Sharyy, Viatcheslav/F-9057-2014; Lokajicek,
Milos/G-7800-2014; Kupco, Alexander/G-9713-2014; Kozelov,
Alexander/J-3812-2014; Christoudias, Theodoros/E-7305-2015; Guo,
Jun/O-5202-2015; Li, Liang/O-1107-2015; Mercadante, Pedro/K-1918-2012;
Mundim, Luiz/A-1291-2012; Yip, Kin/D-6860-2013; Shivpuri, R
K/A-5848-2010; Gutierrez, Phillip/C-1161-2011; bu, xuebing/D-1121-2012;
Dudko, Lev/D-7127-2012; Perfilov, Maxim/E-1064-2012; Boos,
Eduard/D-9748-2012; Merkin, Mikhail/D-6809-2012; Novaes,
Sergio/D-3532-2012
OI De, Kaushik/0000-0002-5647-4489; Ancu, Lucian
Stefan/0000-0001-5068-6723; Sharyy, Viatcheslav/0000-0002-7161-2616;
Christoudias, Theodoros/0000-0001-9050-3880; Guo,
Jun/0000-0001-8125-9433; Li, Liang/0000-0001-6411-6107; Mundim,
Luiz/0000-0001-9964-7805; Yip, Kin/0000-0002-8576-4311; Dudko,
Lev/0000-0002-4462-3192; Novaes, Sergio/0000-0003-0471-8549
FU DOE; NSF (USA); CEA [CNRS/IN2P3]; FASI, Rosatom; RFBR (Russia); CNPq;
FAPERJ; FAPESP; FUNDUNESP (Brazil); DAE; DST (India); Colciencias
(Colombia); CONACyT (Mexico); KRF and KOSEF (Korea); CONICET and UBACyT
(Argentina); FOM (The Netherlands); STFC; Royal Society (United
Kingdom); MSMT; GACR (Czech Republic); CRC Program; CFI; NSERC; WestGrid
Project (Canada); BMBF; DFG (Germany); SFI (Ireland); The Swedish
Research Council (Sweden); CAS and CNSF (China); Alexander von Humboldt
Foundation (Germany)
FX We thank the staffs at Fermilab and collaborating institutions, and
acknowledge support from the DOE and NSF (USA); CEA and CNRS/IN2P3
(France); FASI, Rosatom, and RFBR (Russia); CNPq, FAPERJ, FAPESP, and
FUNDUNESP (Brazil); DAE and DST (India); Colciencias (Colombia); CONACyT
(Mexico); KRF and KOSEF (Korea); CONICET and UBACyT (Argentina); FOM
(The Netherlands); STFC and the Royal Society (United Kingdom); MSMT and
GACR (Czech Republic); CRC Program, CFI, NSERC, and WestGrid Project
(Canada); BMBF and DFG (Germany); SFI (Ireland); The Swedish Research
Council (Sweden); CAS and CNSF (China); and the Alexander von Humboldt
Foundation (Germany).
NR 47
TC 18
Z9 18
U1 0
U2 8
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 5
AR 053012
DI 10.1103/PhysRevD.80.053012
PG 13
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501MB
UT WOS:000270384900035
ER
PT J
AU Abazov, VM
Abbott, B
Abolins, M
Acharya, BS
Adams, M
Adams, T
Aguilo, E
Ahsan, M
Alexeev, GD
Alkhazov, G
Alton, A
Alverson, G
Alves, GA
Ancu, LS
Andeen, T
Anzelc, MS
Aoki, M
Arnoud, Y
Arov, M
Arthaud, M
Askew, A
Asman, B
Atramentov, O
Avila, C
BackusMayes, J
Badaud, F
Bagby, L
Baldin, B
Bandurin, DV
Banerjee, S
Barberis, E
Barfuss, AF
Bargassa, P
Baringer, P
Barreto, J
Bartlett, JF
Bassler, U
Bauer, D
Beale, S
Bean, A
Begalli, M
Begel, M
Belanger-Champagne, C
Bellantoni, L
Bellavance, A
Benitez, JA
Beri, SB
Bernardi, G
Bernhard, R
Bertram, I
Besancon, M
Beuselinck, R
Bezzubov, VA
Bhat, PC
Bhatnagar, V
Blazey, G
Blessing, S
Bloom, K
Boehnlein, A
Boline, D
Bolton, TA
Boos, EE
Borissov, G
Bose, T
Brandt, A
Brock, R
Brooijmans, G
Bross, A
Brown, D
Bu, XB
Buchholz, D
Buehler, M
Buescher, V
Bunichev, V
Burdin, S
Burnett, TH
Buszello, CP
Calfayan, P
Calpas, B
Calvet, S
Cammin, J
Carrasco-Lizarraga, MA
Carrera, E
Carvalho, W
Casey, BCK
Castilla-Valdez, H
Chakrabarti, S
Chakraborty, D
Chan, KM
Chandra, A
Cheu, E
Cho, DK
Choi, S
Choudhary, B
Christoudias, T
Cihangir, S
Claes, D
Clutter, J
Cooke, M
Cooper, WE
Corcoran, M
Couderc, F
Cousinou, MC
Crepe-Renaudin, S
Cutts, D
Cwiok, M
Das, A
Davies, G
De, K
de Jong, SJ
De La Cruz-Burelo, E
DeVaughan, K
Deliot, F
Demarteau, M
Demina, R
Denisov, D
Denisov, SP
Desai, S
Diehl, HT
Diesburg, M
Dominguez, A
Dorland, T
Dubey, A
Dudko, LV
Duflot, L
Duggan, D
Duperrin, A
Dutt, S
Dyshkant, A
Eads, M
Edmunds, D
Ellison, J
Elvira, VD
Enari, Y
Eno, S
Escalier, M
Evans, H
Evdokimov, A
Evdokimov, VN
Facini, G
Ferapontov, AV
Ferbel, T
Fiedler, F
Filthaut, F
Fisher, W
Fisk, HE
Fortner, M
Fox, H
Fu, S
Fuess, S
Gadfort, T
Galea, CF
Garcia-Bellido, A
Gavrilov, V
Gay, P
Geist, W
Geng, W
Gerber, CE
Gershtein, Y
Gillberg, D
Ginther, G
Gomez, B
Goussiou, A
Grannis, PD
Greder, S
Greenlee, H
Greenwood, ZD
Gregores, EM
Grenier, G
Gris, P
Grivaz, JF
Grohsjean, A
Grunendahl, S
Grunewald, MW
Guo, F
Guo, J
Gutierrez, G
Gutierrez, P
Haas, A
Haefner, P
Hagopian, S
Haley, J
Hall, I
Hall, RE
Han, L
Harder, K
Harel, A
Hauptman, JM
Hays, J
Hebbeker, T
Hedin, D
Hegeman, JG
Heinson, AP
Heintz, U
Hensel, C
Heredia-De LaCruz, I
Herner, K
Hesketh, G
Hildreth, MD
Hirosky, R
Hoang, T
Hobbs, JD
Hoeneisen, B
Hohlfeld, M
Hossain, S
Houben, P
Hu, Y
Hubacek, Z
Huske, N
Hynek, V
Iashvili, I
Illingworth, R
Ito, AS
Jabeen, S
Jaffre, M
Jain, S
Jakobs, K
Jamin, D
Jesik, R
Johns, K
Johnson, C
Johnson, M
Johnston, D
Jonckheere, A
Jonsson, P
Juste, A
Kajfasz, E
Karmanov, D
Kasper, PA
Katsanos, I
Kaushik, V
Kehoe, R
Kermiche, S
Khalatyan, N
Khanov, A
Kharchilava, A
Kharzheev, YN
Khatidze, D
Kim, TJ
Kirby, MH
Kirsch, M
Klima, B
Kohli, JM
Konrath, JP
Kozelov, AV
Kraus, J
Kuhl, T
Kumar, A
Kupco, A
Kurca, T
Kuzmin, VA
Kvita, J
Lacroix, F
Lam, D
Lammers, S
Landsberg, G
Lebrun, P
Lee, WM
Leflat, A
Lellouch, J
Li, J
Li, L
Li, QZ
Lietti, SM
Lim, JK
Lincoln, D
Linnemann, J
Lipaev, VV
Lipton, R
Liu, Y
Liu, Z
Lobodenko, A
Lokajicek, M
Love, P
Lubatti, HJ
Luna-Garcia, R
Lyon, AL
Maciel, AKA
Mackin, D
Mattig, P
Magana-Villalba, R
Magerkurth, A
Mal, PK
Malbouisson, HB
Malik, S
Malyshev, VL
Maravin, Y
Martin, B
McCarthy, R
McGivern, CL
Meijer, MM
Melnitchouk, A
Mendoza, L
Menezes, D
Mercadante, PG
Merkin, M
Merritt, KW
Meyer, A
Meyer, J
Mitrevski, J
Mondal, NK
Moore, RW
Moulik, T
Muanza, GS
Mulhearn, M
Mundal, O
Mundim, L
Nagy, E
Naimuddin, M
Narain, M
Neal, HA
Negret, JP
Neustroev, P
Nilsen, H
Nogima, H
Novaes, SF
Nunnemann, T
Obrant, G
Ochando, C
Onoprienko, D
Orduna, J
Oshima, N
Osman, N
Osta, J
Otec, R
Garzon, GJOY
Owen, M
Padilla, M
Padley, P
Pangilinan, M
Parashar, N
Park, SJ
Park, SK
Parsons, J
Partridge, R
Parua, N
Patwa, A
Pawloski, G
Penning, B
Perfilov, M
Peters, K
Peters, Y
Petroff, P
Piegaia, R
Piper, J
Pleier, MA
Podesta-Lerma, PLM
Podstavkov, VM
Pogorelov, Y
Pol, ME
Polozov, P
Popov, AV
da Silva, WLP
Protopopescu, S
Qian, J
Quadt, A
Quinn, B
Rakitine, A
Rangel, MS
Ranjan, K
Ratoff, PN
Renkel, P
Rich, P
Rijssenbeek, M
Ripp-Baudot, I
Rizatdinova, F
Robinson, S
Rominsky, M
Royon, C
Rubinov, P
Ruchti, R
Safronov, G
Sajot, G
Sanchez-Hernandez, A
Sanders, MP
Sanghi, B
Savage, G
Sawyer, L
Scanlon, T
Schaile, D
Schamberger, RD
Scheglov, Y
Schellman, H
Schliephake, T
Schlobohm, S
Schwanenberger, C
Schwienhorst, R
Sekaric, J
Severini, H
Shabalina, E
Shamim, M
Shary, V
Shchukin, AA
Shivpuri, RK
Siccardi, V
Simak, V
Sirotenko, V
Skubic, P
Slattery, P
Smirnov, D
Snow, GR
Snow, J
Snyder, S
Soldner-Rembold, S
Sonnenschein, L
Sopczak, A
Sosebee, M
Soustruznik, K
Spurlock, B
Stark, J
Stolin, V
Stoyanova, DA
Strandberg, J
Strang, MA
Strauss, E
Strauss, M
Strohmer, R
Strom, D
Stutte, L
Sumowidagdo, S
Svoisky, P
Takahashi, M
Tanasijczuk, A
Taylor, W
Tiller, B
Titov, M
Tokmenin, VV
Torchiani, I
Tsybychev, D
Tuchming, B
Tully, C
Tuts, PM
Unalan, R
Uvarov, L
Uvarov, S
Uzunyan, S
van den Berg, PJ
Van Kooten, R
van Leeuwen, WM
Varelas, N
Varnes, EW
Vasilyev, IA
Verdier, P
Vertogradov, LS
Verzocchi, M
Vilanova, D
Vint, P
Vokac, P
Voutilainen, M
Wagner, R
Wahl, HD
Wang, MHLS
Warchol, J
Watts, G
Wayne, M
Weber, G
Weber, M
Welty-Rieger, L
Wenger, A
Wetstein, M
White, A
Wicke, D
Williams, MRJ
Wilson, GW
Wimpenny, SJ
Wobisch, M
Wood, DR
Wyatt, TR
Xie, Y
Xu, C
Yacoob, S
Yamada, R
Yang, WC
Yasuda, T
Yatsunenko, YA
Ye, Z
Yin, H
Yip, K
Yoo, HD
Youn, SW
Yu, J
Zeitnitz, C
Zelitch, S
Zhao, T
Zhou, B
Zhu, J
Zielinski, M
Zieminska, D
Zivkovic, L
Zutshi, V
Zverev, EG
AF Abazov, V. M.
Abbott, B.
Abolins, M.
Acharya, B. S.
Adams, M.
Adams, T.
Aguilo, E.
Ahsan, M.
Alexeev, G. D.
Alkhazov, G.
Alton, A.
Alverson, G.
Alves, G. A.
Ancu, L. S.
Andeen, T.
Anzelc, M. S.
Aoki, M.
Arnoud, Y.
Arov, M.
Arthaud, M.
Askew, A.
Asman, B.
Atramentov, O.
Avila, C.
BackusMayes, J.
Badaud, F.
Bagby, L.
Baldin, B.
Bandurin, D. V.
Banerjee, S.
Barberis, E.
Barfuss, A. -F.
Bargassa, P.
Baringer, P.
Barreto, J.
Bartlett, J. F.
Bassler, U.
Bauer, D.
Beale, S.
Bean, A.
Begalli, M.
Begel, M.
Belanger-Champagne, C.
Bellantoni, L.
Bellavance, A.
Benitez, J. A.
Beri, S. B.
Bernardi, G.
Bernhard, R.
Bertram, I.
Besancon, M.
Beuselinck, R.
Bezzubov, V. A.
Bhat, P. C.
Bhatnagar, V.
Blazey, G.
Blessing, S.
Bloom, K.
Boehnlein, A.
Boline, D.
Bolton, T. A.
Boos, E. E.
Borissov, G.
Bose, T.
Brandt, A.
Brock, R.
Brooijmans, G.
Bross, A.
Brown, D.
Bu, X. B.
Buchholz, D.
Buehler, M.
Buescher, V.
Bunichev, V.
Burdin, S.
Burnett, T. H.
Buszello, C. P.
Calfayan, P.
Calpas, B.
Calvet, S.
Cammin, J.
Carrasco-Lizarraga, M. A.
Carrera, E.
Carvalho, W.
Casey, B. C. K.
Castilla-Valdez, H.
Chakrabarti, S.
Chakraborty, D.
Chan, K. M.
Chandra, A.
Cheu, E.
Cho, D. K.
Choi, S.
Choudhary, B.
Christoudias, T.
Cihangir, S.
Claes, D.
Clutter, J.
Cooke, M.
Cooper, W. E.
Corcoran, M.
Couderc, F.
Cousinou, M. -C.
Crepe-Renaudin, S.
Cutts, D.
Cwiok, M.
Das, A.
Davies, G.
De, K.
de Jong, S. J.
De La Cruz-Burelo, E.
DeVaughan, K.
Deliot, F.
Demarteau, M.
Demina, R.
Denisov, D.
Denisov, S. P.
Desai, S.
Diehl, H. T.
Diesburg, M.
Dominguez, A.
Dorland, T.
Dubey, A.
Dudko, L. V.
Duflot, L.
Duggan, D.
Duperrin, A.
Dutt, S.
Dyshkant, A.
Eads, M.
Edmunds, D.
Ellison, J.
Elvira, V. D.
Enari, Y.
Eno, S.
Escalier, M.
Evans, H.
Evdokimov, A.
Evdokimov, V. N.
Facini, G.
Ferapontov, A. V.
Ferbel, T.
Fiedler, F.
Filthaut, F.
Fisher, W.
Fisk, H. E.
Fortner, M.
Fox, H.
Fu, S.
Fuess, S.
Gadfort, T.
Galea, C. F.
Garcia-Bellido, A.
Gavrilov, V.
Gay, P.
Geist, W.
Geng, W.
Gerber, C. E.
Gershtein, Y.
Gillberg, D.
Ginther, G.
Gomez, B.
Goussiou, A.
Grannis, P. D.
Greder, S.
Greenlee, H.
Greenwood, Z. D.
Gregores, E. M.
Grenier, G.
Gris, Ph.
Grivaz, J. -F.
Grohsjean, A.
Gruenendahl, S.
Gruenewald, M. W.
Guo, F.
Guo, J.
Gutierrez, G.
Gutierrez, P.
Haas, A.
Haefner, P.
Hagopian, S.
Haley, J.
Hall, I.
Hall, R. E.
Han, L.
Harder, K.
Harel, A.
Hauptman, J. M.
Hays, J.
Hebbeker, T.
Hedin, D.
Hegeman, J. G.
Heinson, A. P.
Heintz, U.
Hensel, C.
Heredia-De LaCruz, I.
Herner, K.
Hesketh, G.
Hildreth, M. D.
Hirosky, R.
Hoang, T.
Hobbs, J. D.
Hoeneisen, B.
Hohlfeld, M.
Hossain, S.
Houben, P.
Hu, Y.
Hubacek, Z.
Huske, N.
Hynek, V.
Iashvili, I.
Illingworth, R.
Ito, A. S.
Jabeen, S.
Jaffre, M.
Jain, S.
Jakobs, K.
Jamin, D.
Jesik, R.
Johns, K.
Johnson, C.
Johnson, M.
Johnston, D.
Jonckheere, A.
Jonsson, P.
Juste, A.
Kajfasz, E.
Karmanov, D.
Kasper, P. A.
Katsanos, I.
Kaushik, V.
Kehoe, R.
Kermiche, S.
Khalatyan, N.
Khanov, A.
Kharchilava, A.
Kharzheev, Y. N.
Khatidze, D.
Kim, T. J.
Kirby, M. H.
Kirsch, M.
Klima, B.
Kohli, J. M.
Konrath, J. -P.
Kozelov, A. V.
Kraus, J.
Kuhl, T.
Kumar, A.
Kupco, A.
Kurca, T.
Kuzmin, V. A.
Kvita, J.
Lacroix, F.
Lam, D.
Lammers, S.
Landsberg, G.
Lebrun, P.
Lee, W. M.
Leflat, A.
Lellouch, J.
Li, J.
Li, L.
Li, Q. Z.
Lietti, S. M.
Lim, J. K.
Lincoln, D.
Linnemann, J.
Lipaev, V. V.
Lipton, R.
Liu, Y.
Liu, Z.
Lobodenko, A.
Lokajicek, M.
Love, P.
Lubatti, H. J.
Luna-Garcia, R.
Lyon, A. L.
Maciel, A. K. A.
Mackin, D.
Maettig, P.
Magana-Villalba, R.
Magerkurth, A.
Mal, P. K.
Malbouisson, H. B.
Malik, S.
Malyshev, V. L.
Maravin, Y.
Martin, B.
McCarthy, R.
McGivern, C. L.
Meijer, M. M.
Melnitchouk, A.
Mendoza, L.
Menezes, D.
Mercadante, P. G.
Merkin, M.
Merritt, K. W.
Meyer, A.
Meyer, J.
Mitrevski, J.
Mondal, N. K.
Moore, R. W.
Moulik, T.
Muanza, G. S.
Mulhearn, M.
Mundal, O.
Mundim, L.
Nagy, E.
Naimuddin, M.
Narain, M.
Neal, H. A.
Negret, J. P.
Neustroev, P.
Nilsen, H.
Nogima, H.
Novaes, S. F.
Nunnemann, T.
Obrant, G.
Ochando, C.
Onoprienko, D.
Orduna, J.
Oshima, N.
Osman, N.
Osta, J.
Otec, R.
Otero y Garzon, G. J.
Owen, M.
Padilla, M.
Padley, P.
Pangilinan, M.
Parashar, N.
Park, S. -J.
Park, S. K.
Parsons, J.
Partridge, R.
Parua, N.
Patwa, A.
Pawloski, G.
Penning, B.
Perfilov, M.
Peters, K.
Peters, Y.
Petroff, P.
Piegaia, R.
Piper, J.
Pleier, M. -A.
Podesta-Lerma, P. L. M.
Podstavkov, V. M.
Pogorelov, Y.
Pol, M. -E.
Polozov, P.
Popov, A. V.
Prado da Silva, W. L.
Protopopescu, S.
Qian, J.
Quadt, A.
Quinn, B.
Rakitine, A.
Rangel, M. S.
Ranjan, K.
Ratoff, P. N.
Renkel, P.
Rich, P.
Rijssenbeek, M.
Ripp-Baudot, I.
Rizatdinova, F.
Robinson, S.
Rominsky, M.
Royon, C.
Rubinov, P.
Ruchti, R.
Safronov, G.
Sajot, G.
Sanchez-Hernandez, A.
Sanders, M. P.
Sanghi, B.
Savage, G.
Sawyer, L.
Scanlon, T.
Schaile, D.
Schamberger, R. D.
Scheglov, Y.
Schellman, H.
Schliephake, T.
Schlobohm, S.
Schwanenberger, C.
Schwienhorst, R.
Sekaric, J.
Severini, H.
Shabalina, E.
Shamim, M.
Shary, V.
Shchukin, A. A.
Shivpuri, R. K.
Siccardi, V.
Simak, V.
Sirotenko, V.
Skubic, P.
Slattery, P.
Smirnov, D.
Snow, G. R.
Snow, J.
Snyder, S.
Soeldner-Rembold, S.
Sonnenschein, L.
Sopczak, A.
Sosebee, M.
Soustruznik, K.
Spurlock, B.
Stark, J.
Stolin, V.
Stoyanova, D. A.
Strandberg, J.
Strang, M. A.
Strauss, E.
Strauss, M.
Stroehmer, R.
Strom, D.
Stutte, L.
Sumowidagdo, S.
Svoisky, P.
Takahashi, M.
Tanasijczuk, A.
Taylor, W.
Tiller, B.
Titov, M.
Tokmenin, V. V.
Torchiani, I.
Tsybychev, D.
Tuchming, B.
Tully, C.
Tuts, P. M.
Unalan, R.
Uvarov, L.
Uvarov, S.
Uzunyan, S.
van den Berg, P. J.
Van Kooten, R.
van Leeuwen, W. M.
Varelas, N.
Varnes, E. W.
Vasilyev, I. A.
Verdier, P.
Vertogradov, L. S.
Verzocchi, M.
Vilanova, D.
Vint, P.
Vokac, P.
Voutilainen, M.
Wagner, R.
Wahl, H. D.
Wang, M. H. L. S.
Warchol, J.
Watts, G.
Wayne, M.
Weber, G.
Weber, M.
Welty-Rieger, L.
Wenger, A.
wetstein, M.
White, A.
Wicke, D.
Williams, M. R. J.
Wilson, G. W.
Wimpenny, S. J.
Wobisch, M.
Wood, D. R.
Wyatt, T. R.
Xie, Y.
Xu, C.
Yacoob, S.
Yamada, R.
Yang, W. -C.
Yasuda, T.
Yatsunenko, Y. A.
Ye, Z.
Yin, H.
Yip, K.
Yoo, H. D.
Youn, S. W.
Yu, J.
Zeitnitz, C.
Zelitch, S.
Zhao, T.
Zhou, B.
Zhu, J.
Zielinski, M.
Zieminska, D.
Zivkovic, L.
Zutshi, V.
Zverev, E. G.
TI Search for charged Higgs bosons in decays of top quarks
SO PHYSICAL REVIEW D
LA English
DT Article
ID E(+)E(-) COLLISIONS; MASSLESS PARTICLES; BROKEN SYMMETRIES; MSSM;
MASSES; LEVEL
AB We present a search for charged Higgs bosons in decays of top quarks, in the mass range 80 < m(H+) < 155 GeV, assuming the subsequent decay H+ -> tau(+)nu(tau) (and its charge conjugate). Using 0.9 fb(-1) of lepton + jets data collected with the D0 detector at the Fermilab Tevatron p (p) over bar collider, operating at a center of mass energy root s = 1.96 TeV, we find no evidence for a H+/- signal. Hence we exclude branching ratios B(t -> H(+)b) > 0.24 for m(H+) 80 GeV and B(t -> H(+)b) > 0.19 for m(H+) = 155 GeV at the 95% C.L.
C1 [Abazov, V. M.; Alexeev, G. D.; Kharzheev, Y. N.; Malyshev, V. L.; Tokmenin, V. V.; Vertogradov, L. S.; Yatsunenko, Y. A.] Joint Inst Nucl Res, Dubna, Russia.
[Otero y Garzon, G. J.; Piegaia, R.; Tanasijczuk, A.] Univ Buenos Aires, Buenos Aires, DF, Argentina.
[Alves, G. A.; Barreto, J.; Maciel, A. K. A.; Pol, M. -E.] Ctr Brasileiro Pesquisas Fis, LAFEX, Rio De Janeiro, Brazil.
[Begalli, M.; Carvalho, W.; Malbouisson, H. B.; Mundim, L.; Nogima, H.; Prado da Silva, W. L.] Univ Estado Rio de Janeiro, BR-20550011 Rio De Janeiro, Brazil.
[Gregores, E. M.] Univ Fed ABC, Santo Andre, Brazil.
[Lietti, S. M.; Mercadante, P. G.; Novaes, S. F.] Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil.
[Aguilo, E.; Beale, S.; Gillberg, D.; Liu, Z.; Moore, R. W.; Taylor, W.] Univ Alberta, Edmonton, AB, Canada.
[Aguilo, E.; Beale, S.; Gillberg, D.; Liu, Z.; Moore, R. W.; Taylor, W.] Simon Fraser Univ, Burnaby, BC V5A 1S6, Canada.
[Aguilo, E.; Beale, S.; Gillberg, D.; Liu, Z.; Moore, R. W.; Taylor, W.] York Univ, Toronto, ON M3J 2R7, Canada.
[Aguilo, E.; Beale, S.; Gillberg, D.; Liu, Z.; Moore, R. W.; Taylor, W.] McGill Univ, Montreal, PQ, Canada.
[Bu, X. B.; Han, L.; Liu, Y.; Yin, H.] Univ Sci & Technol China, Hefei 230026, Peoples R China.
[Avila, C.; Gomez, B.; Mendoza, L.; Negret, J. P.] Univ Los Andes, Bogota, Colombia.
[Kvita, J.; Soustruznik, K.] Charles Univ Prague, Fac Math & Phys, Ctr Particle Phys, Prague, Czech Republic.
[Hubacek, Z.; Hynek, V.; Otec, R.; Simak, V.; Vokac, P.] Czech Tech Univ, CR-16635 Prague, Czech Republic.
[Kupco, A.; Lokajicek, M.] Acad Sci Czech Republic, Inst Phys, Ctr Particle Phys, Prague, Czech Republic.
[Hoeneisen, B.] Univ San Francisco Quito, Quito, Ecuador.
[Badaud, F.; Gay, P.; Gris, Ph.; Lacroix, F.] Univ Clermont Ferrand, CNRS, IN2P3, LPC, Clermont Ferrand, France.
[Arnoud, Y.; Crepe-Renaudin, S.; Martin, B.; Sajot, G.; Stark, J.] Univ Grenoble 1, CNRS, IN2P3, Inst Natl Polytech Grenoble,LPSC, Grenoble, France.
[Barfuss, A. -F.; Calpas, B.; Cousinou, M. -C.; Duperrin, A.; Escalier, M.; Geng, W.; Jamin, D.; Kajfasz, E.; Kermiche, S.; Muanza, G. S.; Nagy, E.] Univ Aix Marseille, CNRS, IN2P3, CPPM, Marseille, France.
[Calvet, S.; Duflot, L.; Grivaz, J. -F.; Jaffre, M.; Ochando, C.; Petroff, P.; Rangel, M. S.] Univ Paris 11, CNRS, IN2P3, LAL, F-91405 Orsay, France.
[Bernardi, G.; Huske, N.; Lellouch, J.] Univ Paris 06, CNRS, IN2P3, LPNHE, Paris, France.
[Bernardi, G.; Huske, N.; Lellouch, J.] Univ Paris 07, CNRS, IN2P3, LPNHE, Paris, France.
[Arthaud, M.; Bassler, U.; Besancon, M.; Couderc, F.; Deliot, F.; Grohsjean, A.; Royon, C.; Shary, V.; Titov, M.; Tuchming, B.; Vilanova, D.] CEA, Irfu, SPP, Saclay, France.
[Brown, D.; Geist, W.; Greder, S.; Ripp-Baudot, I.; Siccardi, V.] Univ Strasbourg, CNRS, IN2P3, IPHC, Strasbourg, France.
[Grenier, G.; Kurca, T.; Lebrun, P.; Verdier, P.] Univ Lyon 1, CNRS, IN2P3, IPNL, F-69622 Villeurbanne, France.
[Grenier, G.; Kurca, T.; Lebrun, P.; Verdier, P.] Univ Lyon, Lyon, France.
[Hebbeker, T.; Kirsch, M.; Meyer, A.; Sonnenschein, L.] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany.
[Buescher, V.; Hohlfeld, M.; Mundal, O.; Pleier, M. -A.] Univ Bonn, Inst Phys, D-5300 Bonn, Germany.
[Bernhard, R.; Jakobs, K.; Konrath, J. -P.; Nilsen, H.; Penning, B.; Torchiani, I.; Wenger, A.] Univ Freiburg, Inst Phys, Freiburg, Germany.
[Hensel, C.; Meyer, J.; Park, S. -J.; Quadt, A.; Shabalina, E.] Univ Gottingen, Inst Phys 2, Gottingen, Germany.
[Fiedler, F.; Kuhl, T.; Weber, G.; Wicke, D.] Johannes Gutenberg Univ Mainz, Inst Phys, D-6500 Mainz, Germany.
[Calfayan, P.; Haefner, P.; Nunnemann, T.; Sanders, M. P.; Schaile, D.; Stroehmer, R.; Tiller, B.] Univ Munich, Munich, Germany.
[Maettig, P.; Schliephake, T.; Zeitnitz, C.] Univ Wuppertal, Fachbereich Phys, Wuppertal, Germany.
[Beri, S. B.; Bhatnagar, V.; Dutt, S.; Kohli, J. M.] Panjab Univ, Chandigarh 160014, India.
[Choudhary, B.; Dubey, A.; Ranjan, K.; Shivpuri, R. K.] Univ Delhi, Delhi 110007, India.
[Acharya, B. S.; Banerjee, S.; Mondal, N. K.] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India.
[Cwiok, M.; Gruenewald, M. W.] Univ Coll Dublin, Dublin 2, Ireland.
[Kim, T. J.; Lim, J. K.; Park, S. K.] Korea Univ, Korea Detector Lab, Seoul, South Korea.
[Choi, S.] Sungkyunkwan Univ, Suwon, South Korea.
[Carrasco-Lizarraga, M. A.; Castilla-Valdez, H.; De La Cruz-Burelo, E.; Heredia-De LaCruz, I.; Luna-Garcia, R.; Magana-Villalba, R.; Orduna, J.; Podesta-Lerma, P. L. M.; Sanchez-Hernandez, A.] CINVESTAV, Mexico City 14000, DF, Mexico.
[Hegeman, J. G.; Houben, P.; van den Berg, P. J.; van Leeuwen, W. M.] FOM, Inst NIKHEF, NL-1098 SJ Amsterdam, Netherlands.
[Hegeman, J. G.; Houben, P.; van den Berg, P. J.; van Leeuwen, W. M.] Univ Amsterdam, NIKHEF, Amsterdam, Netherlands.
[Ancu, L. S.; de Jong, S. J.; Filthaut, F.; Galea, C. F.; Meijer, M. M.; Svoisky, P.] Radboud Univ Nijmegen, NIKHEF, NL-6525 ED Nijmegen, Netherlands.
[Gavrilov, V.; Polozov, P.; Safronov, G.; Stolin, V.] Inst Theoret & Expt Phys, Moscow 117259, Russia.
[Boos, E. E.; Bunichev, V.; Dudko, L. V.; Karmanov, D.; Kuzmin, V. A.; Leflat, A.; Merkin, M.; Perfilov, M.; Zverev, E. G.] Moscow MV Lomonosov State Univ, Moscow, Russia.
[Bezzubov, V. A.; Denisov, S. P.; Evdokimov, V. N.; Kozelov, A. V.; Lipaev, V. V.; Popov, A. V.; Shchukin, A. A.; Stoyanova, D. A.; Vasilyev, I. A.] Inst High Energy Phys, Protvino, Russia.
[Alkhazov, G.; Lobodenko, A.; Neustroev, P.; Obrant, G.; Scheglov, Y.; Uvarov, L.; Uvarov, S.] Petersburg Nucl Phys Inst, St Petersburg, Russia.
[Asman, B.; Belanger-Champagne, C.] Stockholm Univ, S-10691 Stockholm, Sweden.
[Asman, B.; Belanger-Champagne, C.] Uppsala Univ, Uppsala, Sweden.
[Bertram, I.; Borissov, G.; Burdin, S.; Fox, H.; Love, P.; Rakitine, A.; Ratoff, P. N.; Sopczak, A.; Williams, M. R. J.] Univ Lancaster, Lancaster, England.
[Bauer, D.; Beuselinck, R.; Buszello, C. P.; Christoudias, T.; Davies, G.; Hays, J.; Jesik, R.; Jonsson, P.; Osman, N.; Robinson, S.; Scanlon, T.; Vint, P.] Univ London Imperial Coll Sci Technol & Med, London, England.
[Harder, K.; Owen, M.; Peters, K.; Peters, Y.; Rich, P.; Schwanenberger, C.; Soeldner-Rembold, S.; Takahashi, M.; Wyatt, T. R.; Yang, W. -C.] Univ Manchester, Manchester, Lancs, England.
[Cheu, E.; Das, A.; Johns, K.; Mal, P. K.; Varnes, E. W.] Univ Arizona, Tucson, AZ 85721 USA.
[Hall, R. E.] Calif State Univ Fresno, Fresno, CA 93740 USA.
[Chandra, A.; Ellison, J.; Heinson, A. P.; Li, L.; Padilla, M.; Wimpenny, S. J.] Univ Calif Riverside, Riverside, CA 92521 USA.
[Adams, T.; Askew, A.; Atramentov, O.; Blessing, S.; Carrera, E.; Duggan, D.; Gershtein, Y.; Hagopian, S.; Hoang, T.; Sekaric, J.; Sumowidagdo, S.; Wahl, H. D.] Florida State Univ, Tallahassee, FL 32306 USA.
[Aoki, M.; Bagby, L.; Baldin, B.; Bartlett, J. F.; Bellantoni, L.; Bellavance, A.; Bhat, P. C.; Boehnlein, A.; Bross, A.; Casey, B. C. K.; Cihangir, S.; Cooke, M.; Cooper, W. E.; Demarteau, M.; Denisov, D.; Desai, S.; Diehl, H. T.; Diesburg, M.; Elvira, V. D.; Fisher, W.; Fisk, H. E.; Fu, S.; Fuess, S.; Ginther, G.; Greenlee, H.; Gruenendahl, S.; Gutierrez, G.; Illingworth, R.; Ito, A. S.; Johnson, M.; Jonckheere, A.; Juste, A.; Kasper, P. A.; Khalatyan, N.; Klima, B.; Lee, W. M.; Li, Q. Z.; Lincoln, D.; Lipton, R.; Lyon, A. L.; Merritt, K. W.; Naimuddin, M.; Oshima, N.; Podstavkov, V. M.; Rubinov, P.; Sanghi, B.; Savage, G.; Sirotenko, V.; Stutte, L.; Verzocchi, M.; Weber, M.; Yamada, R.; Yasuda, T.; Ye, Z.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Adams, M.; Gerber, C. E.; Varelas, N.] Univ Illinois, Chicago, IL 60607 USA.
[Blazey, G.; Chakraborty, D.; Dyshkant, A.; Fortner, M.; Hedin, D.; Menezes, D.; Uzunyan, S.; Zutshi, V.] No Illinois Univ, De Kalb, IL 60115 USA.
[Andeen, T.; Anzelc, M. S.; Buchholz, D.; Kirby, M. H.; Schellman, H.; Strom, D.; Yacoob, S.; Youn, S. W.] Northwestern Univ, Evanston, IL 60208 USA.
[Evans, H.; Lammers, S.; Parua, N.; Van Kooten, R.; Welty-Rieger, L.; Zieminska, D.] Indiana Univ, Bloomington, IN 47405 USA.
[Chan, K. M.; Hildreth, M. D.; Lam, D.; Osta, J.; Pogorelov, Y.; Ruchti, R.; Smirnov, D.; Warchol, J.; Wayne, M.] Univ Notre Dame, Notre Dame, IN 46556 USA.
[Parashar, N.] Purdue Univ Calumet, Hammond, IN 46323 USA.
[Hauptman, J. M.] Iowa State Univ, Ames, IA 50011 USA.
[Baringer, P.; Bean, A.; Clutter, J.; McGivern, C. L.; Moulik, T.; Wilson, G. W.] Univ Kansas, Lawrence, KS 66045 USA.
[Ahsan, M.; Bandurin, D. V.; Bolton, T. A.; Ferapontov, A. V.; Maravin, Y.; Onoprienko, D.; Shamim, M.] Kansas State Univ, Manhattan, KS 66506 USA.
[Arov, M.; Greenwood, Z. D.; Sawyer, L.; Wobisch, M.] Louisiana Tech Univ, Ruston, LA 71272 USA.
[Eno, S.; Ferbel, T.; wetstein, M.] Univ Maryland, College Pk, MD 20742 USA.
[Boline, D.; Bose, T.; Cho, D. K.; Heintz, U.; Jabeen, S.] Boston Univ, Boston, MA 02215 USA.
[Alverson, G.; Barberis, E.; Facini, G.; Hesketh, G.; Wood, D. R.] Northeastern Univ, Boston, MA 02115 USA.
[Alton, A.; Herner, K.; Magerkurth, A.; Neal, H. A.; Qian, J.; Strandberg, J.; Xu, C.; Zhou, B.] Univ Michigan, Ann Arbor, MI 48109 USA.
[Abolins, M.; Benitez, J. A.; Brock, R.; Edmunds, D.; Geng, W.; Hall, I.; Kraus, J.; Linnemann, J.; Piper, J.; Schwienhorst, R.; Unalan, R.] Michigan State Univ, E Lansing, MI 48824 USA.
[Melnitchouk, A.; Quinn, B.] Univ Mississippi, University, MS 38677 USA.
[Bloom, K.; Claes, D.; DeVaughan, K.; Dominguez, A.; Eads, M.; Johnston, D.; Katsanos, I.; Malik, S.; Snow, G. R.; Voutilainen, M.] Univ Nebraska, Lincoln, NE 68588 USA.
[Haley, J.; Tully, C.; Wagner, R.] Princeton Univ, Princeton, NJ 08544 USA.
[Iashvili, I.; Kharchilava, A.; Kumar, A.; Strang, M. A.] SUNY Buffalo, Buffalo, NY 14260 USA.
[Brooijmans, G.; Gadfort, T.; Haas, A.; Johnson, C.; Khatidze, D.; Mitrevski, J.; Mulhearn, M.; Parsons, J.; Tuts, P. M.; Zivkovic, L.] Columbia Univ, New York, NY 10027 USA.
[Cammin, J.; Demina, R.; Ferbel, T.; Garcia-Bellido, A.; Ginther, G.; Harel, A.; Slattery, P.; Wang, M. H. L. S.; Zielinski, M.] Univ Rochester, Rochester, NY 14627 USA.
[Chakrabarti, S.; Grannis, P. D.; Guo, F.; Guo, J.; Hobbs, J. D.; Hu, Y.; McCarthy, R.; Rijssenbeek, M.; Schamberger, R. D.; Strauss, E.; Tsybychev, D.; Zhu, J.] SUNY Stony Brook, Stony Brook, NY 11794 USA.
[Begel, M.; Evdokimov, A.; Patwa, A.; Protopopescu, S.; Snyder, S.; Yip, K.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Snow, J.] Langston Univ, Langston, OK 73050 USA.
[Abbott, B.; Gutierrez, P.; Hossain, S.; Jain, S.; Rominsky, M.; Severini, H.; Skubic, P.; Strauss, M.] Univ Oklahoma, Norman, OK 73019 USA.
[Khanov, A.; Rizatdinova, F.] Oklahoma State Univ, Stillwater, OK 74078 USA.
[Cutts, D.; Enari, Y.; Landsberg, G.; Narain, M.; Pangilinan, M.; Partridge, R.; Xie, Y.; Yoo, H. D.] Brown Univ, Providence, RI 02912 USA.
[Brandt, A.; De, K.; Kaushik, V.; Li, J.; Sosebee, M.; Spurlock, B.; White, A.; Yu, J.] Univ Texas Arlington, Arlington, TX 76019 USA.
[Kehoe, R.; Renkel, P.] So Methodist Univ, Dallas, TX 75275 USA.
[Bargassa, P.; Corcoran, M.; Mackin, D.; Padley, P.; Pawloski, G.] Rice Univ, Houston, TX 77005 USA.
[Buehler, M.; Hirosky, R.; Zelitch, S.] Univ Virginia, Charlottesville, VA 22901 USA.
[BackusMayes, J.; Burnett, T. H.; Dorland, T.; Goussiou, A.; Lubatti, H. J.; Schlobohm, S.; Watts, G.; Zhao, T.] Univ Washington, Seattle, WA 98195 USA.
RP Abazov, VM (reprint author), Joint Inst Nucl Res, Dubna, Russia.
RI Fisher, Wade/N-4491-2013; Shivpuri, R K/A-5848-2010; Gutierrez,
Phillip/C-1161-2011; bu, xuebing/D-1121-2012; Leflat,
Alexander/D-7284-2012; Dudko, Lev/D-7127-2012; Perfilov,
Maxim/E-1064-2012; Boos, Eduard/D-9748-2012; Merkin,
Mikhail/D-6809-2012; Novaes, Sergio/D-3532-2012; Mercadante,
Pedro/K-1918-2012; Mundim, Luiz/A-1291-2012; Yip, Kin/D-6860-2013;
Bargassa, Pedrame/O-2417-2016; Juste, Aurelio/I-2531-2015; De,
Kaushik/N-1953-2013; Ancu, Lucian Stefan/F-1812-2010; Alves,
Gilvan/C-4007-2013; Deliot, Frederic/F-3321-2014; Sharyy,
Viatcheslav/F-9057-2014; Lokajicek, Milos/G-7800-2014; Kupco,
Alexander/G-9713-2014; Kozelov, Alexander/J-3812-2014; Christoudias,
Theodoros/E-7305-2015; KIM, Tae Jeong/P-7848-2015; Guo, Jun/O-5202-2015;
Li, Liang/O-1107-2015
OI Belanger-Champagne, Camille/0000-0003-2368-2617; Qian,
Jianming/0000-0003-4813-8167; Haas, Andrew/0000-0002-4832-0455;
Williams, Mark/0000-0001-5448-4213; Weber, Michele/0000-0002-2770-9031;
Grohsjean, Alexander/0000-0003-0748-8494; Melnychuk,
Oleksandr/0000-0002-2089-8685; Bassler, Ursula/0000-0002-9041-3057;
Filthaut, Frank/0000-0003-3338-2247; Bertram, Iain/0000-0003-4073-4941;
Dudko, Lev/0000-0002-4462-3192; Novaes, Sergio/0000-0003-0471-8549;
Mundim, Luiz/0000-0001-9964-7805; Yip, Kin/0000-0002-8576-4311;
Duperrin, Arnaud/0000-0002-5789-9825; Hoeneisen,
Bruce/0000-0002-6059-4256; Malik, Sudhir/0000-0002-6356-2655; Blazey,
Gerald/0000-0002-7435-5758; Heredia De La Cruz,
Ivan/0000-0002-8133-6467; Evans, Harold/0000-0003-2183-3127; Beuselinck,
Raymond/0000-0003-2613-7446; Weber, Gernot/0000-0003-4199-1640; Heinson,
Ann/0000-0003-4209-6146; grannis, paul/0000-0003-4692-2142; Bean,
Alice/0000-0001-5967-8674; Sawyer, Lee/0000-0001-8295-0605; Bargassa,
Pedrame/0000-0001-8612-3332; Hedin, David/0000-0001-9984-215X; Carrera,
Edgar/0000-0002-0857-8507; Wahl, Horst/0000-0002-1345-0401; Juste,
Aurelio/0000-0002-1558-3291; Begel, Michael/0000-0002-1634-4399; de
Jong, Sijbrand/0000-0002-3120-3367; Landsberg, Greg/0000-0002-4184-9380;
Blessing, Susan/0000-0002-4455-7279; Gershtein,
Yuri/0000-0002-4871-5449; De, Kaushik/0000-0002-5647-4489; Ancu, Lucian
Stefan/0000-0001-5068-6723; Sharyy, Viatcheslav/0000-0002-7161-2616;
Christoudias, Theodoros/0000-0001-9050-3880; KIM, Tae
Jeong/0000-0001-8336-2434; Guo, Jun/0000-0001-8125-9433; Li,
Liang/0000-0001-6411-6107
FU DOE and NSF (USA); CEA and CNRS/IN2P3 (France); FASI, Rosatom, and RFBR
(Russia); CNPq, FAPERJ, FAPESP, and FUNDUNESP (Brazil); DAE and DST
(India); Colciencias (Colombia); CONACyT (Mexico); KRF and KOSEF
(Korea); CONICET and UBACyT (Argentina); FOM (The Netherlands); STFC and
the Royal Society (United Kingdom); MSMT and GACR (Czech Republic); CRC
Program, CFI, NSERC, and WestGrid Project (Canada); BMBF and DFG
(Germany); SFI (Ireland); The Swedish Research Council (Sweden); CAS and
CNSF (China); Alexander von Humboldt Foundation (Germany)
FX We thank the staffs at Fermilab and collaborating institutions, and
acknowledge support from the DOE and NSF (USA); CEA and CNRS/IN2P3
(France); FASI, Rosatom, and RFBR (Russia); CNPq, FAPERJ, FAPESP, and
FUNDUNESP (Brazil); DAE and DST (India); Colciencias (Colombia); CONACyT
(Mexico); KRF and KOSEF (Korea); CONICET and UBACyT (Argentina); FOM
(The Netherlands); STFC and the Royal Society (United Kingdom); MSMT and
GACR (Czech Republic); CRC Program, CFI, NSERC, and WestGrid Project
(Canada); BMBF and DFG (Germany); SFI (Ireland); The Swedish Research
Council (Sweden); CAS and CNSF (China); and the Alexander von Humboldt
Foundation (Germany).
NR 38
TC 21
Z9 21
U1 1
U2 8
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2470-0010
EI 2470-0029
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 5
AR 051107
DI 10.1103/PhysRevD.80.051107
PG 7
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501MB
UT WOS:000270384900007
ER
PT J
AU Arvanitaki, A
Dimopoulos, S
Dubovsky, S
Graham, PW
Harnik, R
Rajendran, S
AF Arvanitaki, Asimina
Dimopoulos, Savas
Dubovsky, Sergei
Graham, Peter W.
Harnik, Roni
Rajendran, Surjeet
TI Decaying dark matter as a probe of unification and TeV spectroscopy
SO PHYSICAL REVIEW D
LA English
DT Article
ID POSITRON EXCESS; R-PARITY; ENERGIES; PAMELA; RAYS
AB In supersymmetric unified theories the dark matter particle can decay, just like the proton, through grand unified interactions with a lifetime of order of similar to 10(26) sec. Its decay products can be detected by several experiments-including Fermi, HESS, PAMELA, ATIC, and IceCube-opening our first direct window to physics at the TeV scale and simultaneously at the unification scale similar to 10(16) GeV. We consider possibilities for explaining the electron/positron spectra observed by HESS, PAMELA, and ATIC, and the resulting predictions for the gamma-ray, electron/positron, and neutrino spectra as will be measured, for example, by Fermi and IceCube. The discovery of an isotropic, hard gamma ray spectral feature at Fermi would be strong evidence for dark matter and would disfavor astrophysical sources such as pulsars. Substructure in the cosmic ray spectra probes the spectroscopy of new TeV-mass particles. For example, a preponderance of electrons in the final state can result from the lightness of selectrons relative to squarks. Decaying dark matter acts as a sparticle injector with an energy reach potentially higher than the LHC. The resulting cosmic ray flux depends only on the values of the weak and unification scales.
C1 [Arvanitaki, Asimina] Univ Calif Berkeley, Berkeley Ctr Theoret Phys, Berkeley, CA 94720 USA.
[Arvanitaki, Asimina] Univ Calif Berkeley, Lawrence Berkeley Lab, Theoret Phys Grp, Berkeley, CA 94720 USA.
[Dimopoulos, Savas; Dubovsky, Sergei; Graham, Peter W.; Harnik, Roni; Rajendran, Surjeet] Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
[Dubovsky, Sergei] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia.
[Rajendran, Surjeet] Stanford Univ, SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA.
RP Arvanitaki, A (reprint author), Univ Calif Berkeley, Berkeley Ctr Theoret Phys, Berkeley, CA 94720 USA.
OI Graham, Peter/0000-0002-1600-1601
NR 40
TC 58
Z9 58
U1 1
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2470-0010
EI 2470-0029
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 5
AR 055011
DI 10.1103/PhysRevD.80.055011
PG 7
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501MB
UT WOS:000270384900087
ER
PT J
AU Aubert, B
Karyotakis, Y
Lees, JP
Poireau, V
Prencipe, E
Prudent, X
Tisserand, V
Tico, JG
Grauges, E
Martinelli, M
Palano, A
Pappagallo, M
Eigen, G
Stugu, B
Sun, L
Battaglia, M
Brown, DN
Kerth, LT
Kolomensky, YG
Lynch, G
Osipenkov, IL
Tackmann, K
Tanabe, T
Hawkes, CM
Soni, N
Watson, AT
Koch, H
Schroeder, T
Asgeirsson, DJ
Fulsom, BG
Hearty, C
Mattison, TS
McKenna, JA
Barrett, M
Khan, A
Randle-Conde, A
Blinov, VE
Bukin, AD
Buzykaev, AR
Druzhinin, VP
Golubev, VB
Onuchin, AP
Serednyakov, SI
Skovpen, YI
Solodov, EP
Todyshev, KY
Bondioli, M
Curry, S
Eschrich, I
Kirkby, D
Lankford, AJ
Lund, P
Mandelkern, M
Martin, EC
Stoker, DP
Atmacan, H
Gary, JW
Liu, F
Long, O
Vitug, GM
Yasin, Z
Zhang, L
Sharma, V
Campagnari, C
Hong, TM
Kovalskyi, D
Mazur, MA
Richman, JD
Beck, TW
Eisner, AM
Heusch, CA
Kroseberg, J
Lockman, WS
Martinez, AJ
Schalk, T
Schumm, BA
Seiden, A
Wang, L
Winstrom, LO
Cheng, CH
Doll, DA
Echenard, B
Fang, F
Hitlin, DG
Narsky, I
Piatenko, T
Porter, FC
Andreassen, R
Mancinelli, G
Meadows, BT
Mishra, K
Sokoloff, MD
Bloom, PC
Ford, WT
Gaz, A
Hirschauer, JF
Nagel, M
Nauenberg, U
Smith, JG
Wagner, SR
Ayad, R
Toki, WH
Wilson, RJ
Feltresi, E
Hauke, A
Jasper, H
Karbach, TM
Merkel, J
Petzold, A
Spaan, B
Wacker, K
Kobel, MJ
Nogowski, R
Schubert, KR
Schwierz, R
Volk, A
Bernard, D
Latour, E
Verderi, M
Clark, PJ
Playfer, S
Watson, JE
Andreotti, M
Bettoni, D
Bozzi, C
Calabrese, R
Cecchi, A
Cibinetto, G
Fioravanti, E
Franchini, P
Luppi, E
Munerato, M
Negrini, M
Petrella, A
Piemontese, L
Santoro, V
Baldini-Ferroli, R
Calcaterra, A
de Sangro, R
Finocchiaro, G
Pacetti, S
Patteri, P
Peruzzi, IM
Piccolo, M
Rama, M
Zallo, A
Contri, R
Guido, E
Lo Vetere, M
Monge, MR
Passaggio, S
Patrignani, C
Robutti, E
Tosi, S
Chaisanguanthum, KS
Morii, M
Adametz, A
Marks, J
Schenk, S
Uwer, U
Bernlochner, FU
Klose, V
Lacker, HM
Bard, DJ
Dauncey, PD
Tibbetts, M
Behera, PK
Charles, MJ
Mallik, U
Cochran, J
Crawley, HB
Dong, L
Eyges, V
Meyer, WT
Prell, S
Rosenberg, EI
Rubin, AE
Gao, YY
Gritsan, AV
Guo, ZJ
Arnaud, N
Bequilleux, J
D'Orazio, A
Davier, M
Derkach, D
da Costa, JF
Grosdidier, G
Le Diberder, F
Lepeltier, V
Lutz, AM
Malaescu, B
Pruvot, S
Roudeau, P
Schune, MH
Serrano, J
Sordini, V
Stocchi, A
Wormser, G
Lange, DJ
Wright, DM
Bingham, I
Burke, JP
Chavez, CA
Fry, JR
Gabathuler, E
Gamet, R
Hutchcroft, DE
Payne, DJ
Touramanis, C
Bevan, AJ
Clarke, CK
Di Lodovico, F
Sacco, R
Sigamani, M
Cowan, G
Paramesvaran, S
Wren, AC
Brown, DN
Davis, CL
Denig, AG
Fritsch, M
Gradl, W
Hafner, A
Alwyn, KE
Bailey, D
Barlow, RJ
Jackson, G
Lafferty, GD
West, TJ
Yi, JI
Anderson, J
Chen, C
Jawahery, A
Roberts, DA
Simi, G
Tuggle, JM
Dallapiccola, C
Salvati, E
Saremi, S
Cowan, R
Dujmic, D
Fisher, PH
Henderson, SW
Sciolla, G
Spitznagel, M
Yamamoto, RK
Zhao, M
Patel, PM
Robertson, SH
Schram, M
Lazzaro, A
Lombardo, V
Palombo, F
Stracka, S
Bauer, JM
Cremaldi, L
Godang, R
Kroeger, R
Sonnek, P
Summers, DJ
Zhao, HW
Simard, M
Taras, P
Nicholson, H
De Nardo, G
Lista, L
Monorchio, D
Onorato, G
Sciacca, C
Raven, G
Snoek, HL
Jessop, CP
Knoepfel, KJ
LoSecco, JM
Wang, WF
Corwin, LA
Honscheid, K
Kagan, H
Kass, R
Morris, JP
Rahimi, AM
Regensburger, JJ
Sekula, SJ
Wong, QK
Blount, NL
Brau, J
Frey, R
Igonkina, O
Kolb, JA
Lu, M
Rahmat, R
Sinev, NB
Strom, D
Strube, J
Torrence, E
Castelli, G
Gagliardi, N
Margoni, M
Morandin, M
Posocco, M
Rotondo, M
Simonetto, F
Stroili, R
Voci, C
Sanchez, PD
Ben-Haim, E
Bonneaud, GR
Briand, H
Chauveau, J
Hamon, O
Leruste, P
Marchiori, G
Ocariz, J
Perez, A
Prendki, J
Sitt, S
Gladney, L
Biasini, M
Manoni, E
Angelini, C
Batignani, G
Bettarini, S
Calderini, G
Carpinelli, M
Cervelli, A
Forti, F
Giorgi, MA
Lusiani, A
Morganti, M
Neri, N
Paoloni, E
Rizzo, G
Walsh, JJ
Pegna, DL
Lu, C
Olsen, J
Smith, AJS
Telnov, AV
Anulli, F
Baracchini, E
Cavoto, G
Faccini, R
Ferrarotto, F
Ferroni, F
Gaspero, M
Jackson, PD
Gioi, LL
Mazzoni, MA
Morganti, S
Piredda, G
Renga, F
Voena, C
Ebert, M
Hartmann, T
Schroder, H
Waldi, R
Adye, T
Franek, B
Olaiya, EO
Wilson, FF
Emery, S
Esteve, L
de Monchenault, GH
Kozanecki, W
Vasseur, G
Yeche, C
Zito, M
Allen, MT
Aston, D
Bartoldus, R
Benitez, JF
Cenci, R
Coleman, JP
Convery, MR
Dingfelder, JC
Dorfan, J
Dubois-Felsmann, GP
Dunwoodie, W
Field, RC
Sevilla, MF
Gabareen, AM
Graham, MT
Grenier, P
Hast, C
Innes, WR
Kaminski, J
Kelsey, MH
Kim, H
Kim, P
Kocian, ML
Leith, DWGS
Li, S
Lindquist, B
Luitz, S
Luth, V
Lynch, HL
MacFarlane, DB
Marsiske, H
Messner, R
Muller, DR
Neal, H
Nelson, S
O'Grady, CP
Ofte, I
Perl, M
Ratcliff, BN
Roodman, A
Salnikov, AA
Schindler, RH
Schwiening, J
Snyder, A
Su, D
Sullivan, MK
Suzuki, K
Swain, SK
Thompson, JM
Va'vra, J
Wagner, AP
Weaver, M
West, CA
Wisniewski, WJ
Wittgen, M
Wright, DH
Wulsin, HW
Yarritu, AK
Young, CC
Ziegler, V
Chen, XR
Liu, H
Park, W
Purohit, MV
White, RM
Wilson, JR
Burchat, PR
Edwards, AJ
Miyashita, TS
Ahmed, S
Alam, MS
Ernst, JA
Pan, B
Saeed, MA
Zain, SB
Soffer, A
Spanier, SM
Wogsland, BJ
Eckmann, R
Ritchie, JL
Ruland, AM
Schilling, CJ
Schwitters, RF
Wray, BC
Drummond, BW
Izen, JM
Lou, XC
Bianchi, F
Gamba, D
Pelliccioni, M
Bomben, M
Bosisio, L
Cartaro, C
Della Ricca, G
Lanceri, L
Vitale, L
Azzolini, V
Lopez-March, N
Martinez-Vidal, F
Milanes, DA
Oyanguren, A
Albert, J
Banerjee, S
Bhuyan, B
Choi, HHF
Hamano, K
King, GJ
Kowalewski, R
Lewczuk, MJ
Nugent, IM
Roney, JM
Sobie, RJ
Gershon, TJ
Harrison, PF
Ilic, J
Latham, TE
Mohanty, GB
Puccio, EMT
Band, HR
Chen, X
Dasu, S
Flood, KT
Pan, Y
Prepost, R
Vuosalo, CO
Wu, SL
AF Aubert, B.
Karyotakis, Y.
Lees, J. P.
Poireau, V.
Prencipe, E.
Prudent, X.
Tisserand, V.
Garra Tico, J.
Grauges, E.
Martinelli, M.
Palano, A.
Pappagallo, M.
Eigen, G.
Stugu, B.
Sun, L.
Battaglia, M.
Brown, D. N.
Kerth, L. T.
Kolomensky, Yu. G.
Lynch, G.
Osipenkov, I. L.
Tackmann, K.
Tanabe, T.
Hawkes, C. M.
Soni, N.
Watson, A. T.
Koch, H.
Schroeder, T.
Asgeirsson, D. J.
Fulsom, B. G.
Hearty, C.
Mattison, T. S.
McKenna, J. A.
Barrett, M.
Khan, A.
Randle-Conde, A.
Blinov, V. E.
Bukin, A. D.
Buzykaev, A. R.
Druzhinin, V. P.
Golubev, V. B.
Onuchin, A. P.
Serednyakov, S. I.
Skovpen, Yu. I.
Solodov, E. P.
Todyshev, K. Yu.
Bondioli, M.
Curry, S.
Eschrich, I.
Kirkby, D.
Lankford, A. J.
Lund, P.
Mandelkern, M.
Martin, E. C.
Stoker, D. P.
Atmacan, H.
Gary, J. W.
Liu, F.
Long, O.
Vitug, G. M.
Yasin, Z.
Zhang, L.
Sharma, V.
Campagnari, C.
Hong, T. M.
Kovalskyi, D.
Mazur, M. A.
Richman, J. D.
Beck, T. W.
Eisner, A. M.
Heusch, C. A.
Kroseberg, J.
Lockman, W. S.
Martinez, A. J.
Schalk, T.
Schumm, B. A.
Seiden, A.
Wang, L.
Winstrom, L. O.
Cheng, C. H.
Doll, D. A.
Echenard, B.
Fang, F.
Hitlin, D. G.
Narsky, I.
Piatenko, T.
Porter, F. C.
Andreassen, R.
Mancinelli, G.
Meadows, B. T.
Mishra, K.
Sokoloff, M. D.
Bloom, P. C.
Ford, W. T.
Gaz, A.
Hirschauer, J. F.
Nagel, M.
Nauenberg, U.
Smith, J. G.
Wagner, S. R.
Ayad, R.
Toki, W. H.
Wilson, R. J.
Feltresi, E.
Hauke, A.
Jasper, H.
Karbach, T. M.
Merkel, J.
Petzold, A.
Spaan, B.
Wacker, K.
Kobel, M. J.
Nogowski, R.
Schubert, K. R.
Schwierz, R.
Volk, A.
Bernard, D.
Latour, E.
Verderi, M.
Clark, P. J.
Playfer, S.
Watson, J. E.
Andreotti, M.
Bettoni, D.
Bozzi, C.
Calabrese, R.
Cecchi, A.
Cibinetto, G.
Fioravanti, E.
Franchini, P.
Luppi, E.
Munerato, M.
Negrini, M.
Petrella, A.
Piemontese, L.
Santoro, V.
Baldini-Ferroli, R.
Calcaterra, A.
de Sangro, R.
Finocchiaro, G.
Pacetti, S.
Patteri, P.
Peruzzi, I. M.
Piccolo, M.
Rama, M.
Zallo, A.
Contri, R.
Guido, E.
Lo Vetere, M.
Monge, M. R.
Passaggio, S.
Patrignani, C.
Robutti, E.
Tosi, S.
Chaisanguanthum, K. S.
Morii, M.
Adametz, A.
Marks, J.
Schenk, S.
Uwer, U.
Bernlochner, F. U.
Klose, V.
Lacker, H. M.
Bard, D. J.
Dauncey, P. D.
Tibbetts, M.
Behera, P. K.
Charles, M. J.
Mallik, U.
Cochran, J.
Crawley, H. B.
Dong, L.
Eyges, V.
Meyer, W. T.
Prell, S.
Rosenberg, E. I.
Rubin, A. E.
Gao, Y. Y.
Gritsan, A. V.
Guo, Z. J.
Arnaud, N.
Bequilleux, J.
D'Orazio, A.
Davier, M.
Derkach, D.
da Costa, J. Firmino
Grosdidier, G.
Le Diberder, F.
Lepeltier, V.
Lutz, A. M.
Malaescu, B.
Pruvot, S.
Roudeau, P.
Schune, M. H.
Serrano, J.
Sordini, V.
Stocchi, A.
Wormser, G.
Lange, D. J.
Wright, D. M.
Bingham, I.
Burke, J. P.
Chavez, C. A.
Fry, J. R.
Gabathuler, E.
Gamet, R.
Hutchcroft, D. E.
Payne, D. J.
Touramanis, C.
Bevan, A. J.
Clarke, C. K.
Di Lodovico, F.
Sacco, R.
Sigamani, M.
Cowan, G.
Paramesvaran, S.
Wren, A. C.
Brown, D. N.
Davis, C. L.
Denig, A. G.
Fritsch, M.
Gradl, W.
Hafner, A.
Alwyn, K. E.
Bailey, D.
Barlow, R. J.
Jackson, G.
Lafferty, G. D.
West, T. J.
Yi, J. I.
Anderson, J.
Chen, C.
Jawahery, A.
Roberts, D. A.
Simi, G.
Tuggle, J. M.
Dallapiccola, C.
Salvati, E.
Saremi, S.
Cowan, R.
Dujmic, D.
Fisher, P. H.
Henderson, S. W.
Sciolla, G.
Spitznagel, M.
Yamamoto, R. K.
Zhao, M.
Patel, P. M.
Robertson, S. H.
Schram, M.
Lazzaro, A.
Lombardo, V.
Palombo, F.
Stracka, S.
Bauer, J. M.
Cremaldi, L.
Godang, R.
Kroeger, R.
Sonnek, P.
Summers, D. J.
Zhao, H. W.
Simard, M.
Taras, P.
Nicholson, H.
De Nardo, G.
Lista, L.
Monorchio, D.
Onorato, G.
Sciacca, C.
Raven, G.
Snoek, H. L.
Jessop, C. P.
Knoepfel, K. J.
LoSecco, J. M.
Wang, W. F.
Corwin, L. A.
Honscheid, K.
Kagan, H.
Kass, R.
Morris, J. P.
Rahimi, A. M.
Regensburger, J. J.
Sekula, S. J.
Wong, Q. K.
Blount, N. L.
Brau, J.
Frey, R.
Igonkina, O.
Kolb, J. A.
Lu, M.
Rahmat, R.
Sinev, N. B.
Strom, D.
Strube, J.
Torrence, E.
Castelli, G.
Gagliardi, N.
Margoni, M.
Morandin, M.
Posocco, M.
Rotondo, M.
Simonetto, F.
Stroili, R.
Voci, C.
Sanchez, P. del Amo
Ben-Haim, E.
Bonneaud, G. R.
Briand, H.
Chauveau, J.
Hamon, O.
Leruste, Ph.
Marchiori, G.
Ocariz, J.
Perez, A.
Prendki, J.
Sitt, S.
Gladney, L.
Biasini, M.
Manoni, E.
Angelini, C.
Batignani, G.
Bettarini, S.
Calderini, G.
Carpinelli, M.
Cervelli, A.
Forti, F.
Giorgi, M. A.
Lusiani, A.
Morganti, M.
Neri, N.
Paoloni, E.
Rizzo, G.
Walsh, J. J.
Pegna, D. Lopes
Lu, C.
Olsen, J.
Smith, A. J. S.
Telnov, A. V.
Anulli, F.
Baracchini, E.
Cavoto, G.
Faccini, R.
Ferrarotto, F.
Ferroni, F.
Gaspero, M.
Jackson, P. D.
Gioi, L. Li
Mazzoni, M. A.
Morganti, S.
Piredda, G.
Renga, F.
Voena, C.
Ebert, M.
Hartmann, T.
Schroeder, H.
Waldi, R.
Adye, T.
Franek, B.
Olaiya, E. O.
Wilson, F. F.
Emery, S.
Esteve, L.
de Monchenault, G. Hamel
Kozanecki, W.
Vasseur, G.
Yeche, Ch.
Zito, M.
Allen, M. T.
Aston, D.
Bartoldus, R.
Benitez, J. F.
Cenci, R.
Coleman, J. P.
Convery, M. R.
Dingfelder, J. C.
Dorfan, J.
Dubois-Felsmann, G. P.
Dunwoodie, W.
Field, R. C.
Sevilla, M. Franco
Gabareen, A. M.
Graham, M. T.
Grenier, P.
Hast, C.
Innes, W. R.
Kaminski, J.
Kelsey, M. H.
Kim, H.
Kim, P.
Kocian, M. L.
Leith, D. W. G. S.
Li, S.
Lindquist, B.
Luitz, S.
Luth, V.
Lynch, H. L.
MacFarlane, D. B.
Marsiske, H.
Messner, R.
Muller, D. R.
Neal, H.
Nelson, S.
O'Grady, C. P.
Ofte, I.
Perl, M.
Ratcliff, B. N.
Roodman, A.
Salnikov, A. A.
Schindler, R. H.
Schwiening, J.
Snyder, A.
Su, D.
Sullivan, M. K.
Suzuki, K.
Swain, S. K.
Thompson, J. M.
Va'vra, J.
Wagner, A. P.
Weaver, M.
West, C. A.
Wisniewski, W. J.
Wittgen, M.
Wright, D. H.
Wulsin, H. W.
Yarritu, A. K.
Young, C. C.
Ziegler, V.
Chen, X. R.
Liu, H.
Park, W.
Purohit, M. V.
White, R. M.
Wilson, J. R.
Burchat, P. R.
Edwards, A. J.
Miyashita, T. S.
Ahmed, S.
Alam, M. S.
Ernst, J. A.
Pan, B.
Saeed, M. A.
Zain, S. B.
Soffer, A.
Spanier, S. M.
Wogsland, B. J.
Eckmann, R.
Ritchie, J. L.
Ruland, A. M.
Schilling, C. J.
Schwitters, R. F.
Wray, B. C.
Drummond, B. W.
Izen, J. M.
Lou, X. C.
Bianchi, F.
Gamba, D.
Pelliccioni, M.
Bomben, M.
Bosisio, L.
Cartaro, C.
Della Ricca, G.
Lanceri, L.
Vitale, L.
Azzolini, V.
Lopez-March, N.
Martinez-Vidal, F.
Milanes, D. A.
Oyanguren, A.
Albert, J.
Banerjee, Sw.
Bhuyan, B.
Choi, H. H. F.
Hamano, K.
King, G. J.
Kowalewski, R.
Lewczuk, M. J.
Nugent, I. M.
Roney, J. M.
Sobie, R. J.
Gershon, T. J.
Harrison, P. F.
Ilic, J.
Latham, T. E.
Mohanty, G. B.
Puccio, E. M. T.
Band, H. R.
Chen, X.
Dasu, S.
Flood, K. T.
Pan, Y.
Prepost, R.
Vuosalo, C. O.
Wu, S. L.
CA BaBaR Collaboration
TI Measurement of the gamma gamma* -> pi(0) transition form factor
SO PHYSICAL REVIEW D
LA English
DT Article
ID EXCLUSIVE PROCESSES; QUANTUM CHROMODYNAMICS; PION; MESONS; COLLISIONS;
QCD
AB We study the reaction e(+)e(-) -> e(+)e(-)pi(0) in the single tag mode and measure the differential cross section d sigma/dQ(2) and the gamma gamma* -> pi(0) transition form factor in the momentum transfer range from 4 to 40 GeV2. At Q(2) > 10 GeV2 the measured form factor exceeds the asymptotic limit predicted by perturbative QCD. The analysis is based on 442 fb(-1) of integrated luminosity collected at PEP-II with the BABAR detector at e(+)e(-) center-of-mass energies near 10.6 GeV.
C1 [Aubert, B.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prencipe, E.; Prudent, X.; Tisserand, V.] Univ Savoie, CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules LAPP, F-74941 Annecy Le Vieux, France.
[Garra Tico, J.; Grauges, E.] Univ Barcelona, Fac Fis, Dept Estructura & Constituents Mat, E-08028 Barcelona, Spain.
[Martinelli, M.; Palano, A.; Pappagallo, M.; Bianchi, F.; Gamba, D.; Pelliccioni, M.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.
[Martinelli, M.; Palano, A.; Pappagallo, M.; Bianchi, F.; Gamba, D.; Pelliccioni, M.] Univ Bari, Dipartimento Fis, I-70126 Bari, Italy.
[Eigen, G.; Stugu, B.; Sun, L.] Univ Bergen, Inst Phys, N-5007 Bergen, Norway.
[Battaglia, M.; Brown, D. N.; Kerth, L. T.; Kolomensky, Yu. G.; Lynch, G.; Osipenkov, I. L.; Tackmann, K.; Tanabe, T.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Hawkes, C. M.; Soni, N.; Watson, A. T.; Koch, H.] Univ Birmingham, Birmingham B15 2TT, W Midlands, England.
[Schroeder, T.] Ruhr Univ Bochum, Inst Expt Phys 1, D-44780 Bochum, Germany.
[Asgeirsson, D. J.; Fulsom, B. G.; Hearty, C.; Mattison, T. S.; McKenna, J. A.] Univ British Columbia, Vancouver, BC V6T 1Z1, Canada.
[Barrett, M.; Khan, A.; Randle-Conde, A.] Brunel Univ, Uxbridge UB8 3PH, Middx, England.
[Blinov, V. E.; Bukin, A. D.; Buzykaev, A. R.; Druzhinin, V. P.; Golubev, V. B.; Onuchin, A. P.; Serednyakov, S. I.; Skovpen, Yu. I.; Solodov, E. P.; Todyshev, K. Yu.] Budker Inst Nucl Phys, Novosibirsk 630090, Russia.
[Bondioli, M.; Curry, S.; Eschrich, I.; Kirkby, D.; Lankford, A. J.; Lund, P.; Mandelkern, M.; Martin, E. C.; Stoker, D. P.] Univ Calif Irvine, Irvine, CA 92697 USA.
[Atmacan, H.; Gary, J. W.; Liu, F.; Long, O.; Vitug, G. M.; Yasin, Z.; Zhang, L.] Univ Calif Riverside, Riverside, CA 92521 USA.
[Sharma, V.] Univ Calif San Diego, La Jolla, CA 92093 USA.
[Campagnari, C.; Hong, T. M.; Kovalskyi, D.; Mazur, M. A.; Richman, J. D.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
[Beck, T. W.; Eisner, A. M.; Heusch, C. A.; Kroseberg, J.; Lockman, W. S.; Martinez, A. J.; Schalk, T.; Schumm, B. A.; Seiden, A.; Wang, L.; Winstrom, L. O.] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA.
[Cheng, C. H.; Doll, D. A.; Echenard, B.; Fang, F.; Hitlin, D. G.; Narsky, I.; Piatenko, T.; Porter, F. C.] CALTECH, Pasadena, CA 91125 USA.
[Andreassen, R.; Mancinelli, G.; Meadows, B. T.; Mishra, K.; Sokoloff, M. D.] Univ Cincinnati, Cincinnati, OH 45221 USA.
[Bloom, P. C.; Ford, W. T.; Gaz, A.; Hirschauer, J. F.; Nagel, M.; Nauenberg, U.; Smith, J. G.; Wagner, S. R.] Univ Colorado, Boulder, CO 80309 USA.
[Ayad, R.; Toki, W. H.; Wilson, R. J.] Colorado State Univ, Ft Collins, CO 80523 USA.
[Feltresi, E.; Hauke, A.; Jasper, H.; Karbach, T. M.; Merkel, J.; Petzold, A.; Spaan, B.; Wacker, K.] Tech Univ Dortmund, Fak Phys, D-44221 Dortmund, Germany.
[Kobel, M. J.; Nogowski, R.; Schubert, K. R.; Schwierz, R.; Volk, A.] Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany.
[Bernard, D.; Latour, E.; Verderi, M.] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France.
[Clark, P. J.; Playfer, S.; Watson, J. E.] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland.
[Andreotti, M.; Bettoni, D.; Bozzi, C.; Calabrese, R.; Cecchi, A.; Cibinetto, G.; Fioravanti, E.; Franchini, P.; Luppi, E.; Munerato, M.; Negrini, M.; Petrella, A.; Piemontese, L.; Santoro, V.] Ist Nazl Fis Nucl, Sez Ferrara, I-44100 Ferrara, Italy.
[Andreotti, M.; Calabrese, R.; Cecchi, A.; Cibinetto, G.; Fioravanti, E.; Franchini, P.; Luppi, E.; Munerato, M.; Negrini, M.; Petrella, A.; Santoro, V.] Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy.
[Baldini-Ferroli, R.; Calcaterra, A.; de Sangro, R.; Finocchiaro, G.; Pacetti, S.; Patteri, P.; Peruzzi, I. M.; Piccolo, M.; Rama, M.; Zallo, A.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
[Contri, R.; Guido, E.; Lo Vetere, M.; Monge, M. R.; Passaggio, S.; Patrignani, C.; Robutti, E.; Tosi, S.] Ist Nazl Fis Nucl, Sez Gonova, I-16146 Genoa, Italy.
[Contri, R.; Guido, E.; Lo Vetere, M.; Monge, M. R.; Patrignani, C.; Tosi, S.] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy.
[Chaisanguanthum, K. S.; Morii, M.] Harvard Univ, Cambridge, MA 02138 USA.
[Adametz, A.; Marks, J.; Schenk, S.; Uwer, U.] Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany.
[Bernlochner, F. U.; Klose, V.; Lacker, H. M.] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany.
[Bard, D. J.; Dauncey, P. D.; Tibbetts, M.] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England.
[Behera, P. K.; Charles, M. J.; Mallik, U.] Univ Iowa, Iowa City, IA 52242 USA.
[Cochran, J.; Crawley, H. B.; Dong, L.; Eyges, V.; Meyer, W. T.; Prell, S.; Rosenberg, E. I.; Rubin, A. E.] Iowa State Univ, Ames, IA 50011 USA.
[Gao, Y. Y.; Gritsan, A. V.; Guo, Z. J.] Johns Hopkins Univ, Baltimore, MD 21218 USA.
[Arnaud, N.; Bequilleux, J.; D'Orazio, A.; Davier, M.; Derkach, D.; da Costa, J. Firmino; Grosdidier, G.; Le Diberder, F.; Lepeltier, V.; Lutz, A. M.; Malaescu, B.; Pruvot, S.; Roudeau, P.; Schune, M. H.; Serrano, J.; Sordini, V.; Stocchi, A.; Wormser, G.] CNRS, IN2P3, Lab Accelerateur Lineaire, F-91898 Orsay, France.
[Arnaud, N.; Bequilleux, J.; D'Orazio, A.; Davier, M.; Derkach, D.; da Costa, J. Firmino; Grosdidier, G.; Le Diberder, F.; Lepeltier, V.; Lutz, A. M.; Malaescu, B.; Pruvot, S.; Roudeau, P.; Schune, M. H.; Serrano, J.; Sordini, V.; Stocchi, A.; Wormser, G.] Univ Paris 11, Ctr Sci Orsay, F-91898 Orsay, France.
[Lange, D. J.; Wright, D. M.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Bingham, I.; Burke, J. P.; Chavez, C. A.; Fry, J. R.; Gabathuler, E.; Gamet, R.; Hutchcroft, D. E.; Payne, D. J.; Touramanis, C.] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England.
[Bevan, A. J.; Clarke, C. K.; Di Lodovico, F.; Sacco, R.; Sigamani, M.; Cowan, G.] Univ London, London E1 4NS, England.
[Paramesvaran, S.; Wren, A. C.] Univ London, Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England.
[Brown, D. N.; Davis, C. L.] Univ Louisville, Louisville, KY 40292 USA.
[Denig, A. G.; Fritsch, M.; Gradl, W.; Hafner, A.] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany.
[Alwyn, K. E.; Bailey, D.; Barlow, R. J.; Jackson, G.; Lafferty, G. D.; West, T. J.; Yi, J. I.] Univ Manchester, Manchester M13 9PL, Lancs, England.
[Anderson, J.; Chen, C.; Jawahery, A.; Roberts, D. A.; Simi, G.; Tuggle, J. M.] Univ Maryland, College Pk, MD 20742 USA.
[Dallapiccola, C.; Salvati, E.; Saremi, S.] Univ Massachusetts, Amherst, MA 01003 USA.
[Cowan, R.; Dujmic, D.; Fisher, P. H.; Henderson, S. W.; Sciolla, G.; Spitznagel, M.; Yamamoto, R. K.; Zhao, M.] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA.
[Patel, P. M.; Robertson, S. H.; Schram, M.] McGill Univ, Montreal, PQ H3A 2T8, Canada.
[Lazzaro, A.; Lombardo, V.; Palombo, F.; Stracka, S.] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy.
[Lazzaro, A.; Palombo, F.; Stracka, S.] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.
[Bauer, J. M.; Cremaldi, L.; Godang, R.; Kroeger, R.; Sonnek, P.; Summers, D. J.; Zhao, H. W.] Univ Mississippi, University, MS 38677 USA.
[Simard, M.; Taras, P.] Univ Montreal, Montreal, PQ H3C 3J7, Canada.
[Nicholson, H.] Mt Holyoke Coll, S Hadley, MA 01075 USA.
[De Nardo, G.; Lista, L.; Monorchio, D.; Onorato, G.; Sciacca, C.] Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy.
[De Nardo, G.; Monorchio, D.; Onorato, G.; Sciacca, C.] Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy.
[Raven, G.; Snoek, H. L.] Natl Inst Nucl & High Energy Phys, NIKHEF, NL-1009 DB Amsterdam, Netherlands.
[Jessop, C. P.; Knoepfel, K. J.; LoSecco, J. M.; Wang, W. F.] Univ Notre Dame, Notre Dame, IN 46556 USA.
[Corwin, L. A.; Honscheid, K.; Kagan, H.; Kass, R.; Morris, J. P.; Rahimi, A. M.; Regensburger, J. J.; Sekula, S. J.; Wong, Q. K.] Ohio State Univ, Columbus, OH 43210 USA.
[Blount, N. L.; Brau, J.; Frey, R.; Igonkina, O.; Kolb, J. A.; Lu, M.; Rahmat, R.; Sinev, N. B.; Strom, D.; Strube, J.; Torrence, E.] Univ Oregon, Eugene, OR 97403 USA.
[Castelli, G.; Gagliardi, N.; Margoni, M.; Morandin, M.; Posocco, M.; Rotondo, M.; Simonetto, F.; Stroili, R.; Voci, C.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.
[Castelli, G.; Gagliardi, N.; Margoni, M.; Simonetto, F.; Stroili, R.; Voci, C.] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy.
[Sanchez, P. del Amo; Ben-Haim, E.; Bonneaud, G. R.; Briand, H.; Chauveau, J.; Hamon, O.; Leruste, Ph.; Marchiori, G.; Ocariz, J.; Perez, A.; Prendki, J.; Sitt, S.; Calderini, G.] Univ Paris 07, Univ Paris 06, CNRS, IN2P3,Lab Phys Nucl & Hautes Energies, F-75252 Paris, France.
[Gladney, L.] Univ Penn, Philadelphia, PA 19104 USA.
[Biasini, M.; Manoni, E.] Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy.
[Peruzzi, I. M.; Biasini, M.; Manoni, E.] Univ Perugia, Dipartimento Fis, I-06100 Perugia, Italy.
[Angelini, C.; Batignani, G.; Bettarini, S.; Calderini, G.; Carpinelli, M.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Lusiani, A.; Morganti, M.; Neri, N.; Paoloni, E.; Rizzo, G.; Walsh, J. J.] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy.
[Angelini, C.; Batignani, G.; Bettarini, S.; Calderini, G.; Carpinelli, M.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Morganti, M.; Neri, N.; Paoloni, E.; Rizzo, G.] Univ Pisa, Dipartimento Fis, I-56127 Pisa, Italy.
[Lusiani, A.] Scuola Normale Super Pisa, I-56127 Pisa, Italy.
[Pegna, D. Lopes; Lu, C.; Olsen, J.; Smith, A. J. S.; Telnov, A. V.] Princeton Univ, Princeton, NJ 08544 USA.
[Baracchini, E.; Faccini, R.; Ferroni, F.; Gaspero, M.; Renga, F.] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy.
[Ebert, M.; Hartmann, T.; Schroeder, H.; Waldi, R.] Univ Rostock, D-18051 Rostock, Germany.
[Adye, T.; Franek, B.; Olaiya, E. O.; Wilson, F. F.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
[Emery, S.; Esteve, L.; de Monchenault, G. Hamel; Kozanecki, W.; Vasseur, G.; Yeche, Ch.; Zito, M.] CEA, SPP, Ctr Saclay, F-91191 Gif Sur Yvette, France.
[Allen, M. T.; Aston, D.; Bartoldus, R.; Benitez, J. F.; Cenci, R.; Coleman, J. P.; Convery, M. R.; Dingfelder, J. C.; Dorfan, J.; Dubois-Felsmann, G. P.; Dunwoodie, W.; Field, R. C.; Sevilla, M. Franco; Gabareen, A. M.; Graham, M. T.; Grenier, P.; Hast, C.; Innes, W. R.; Kaminski, J.; Kelsey, M. H.; Kim, H.; Kim, P.; Kocian, M. L.; Leith, D. W. G. S.; Li, S.; Lindquist, B.; Luitz, S.; Luth, V.; Lynch, H. L.; MacFarlane, D. B.; Marsiske, H.; Messner, R.; Muller, D. R.; Neal, H.; Nelson, S.; O'Grady, C. P.; Ofte, I.; Perl, M.; Ratcliff, B. N.; Roodman, A.; Salnikov, A. A.; Schindler, R. H.; Schwiening, J.; Snyder, A.; Su, D.; Sullivan, M. K.; Suzuki, K.; Swain, S. K.; Thompson, J. M.; Va'vra, J.; Wagner, A. P.; Weaver, M.; West, C. A.; Wisniewski, W. J.; Wittgen, M.; Wright, D. H.; Wulsin, H. W.; Yarritu, A. K.; Young, C. C.; Ziegler, V.] Stanford Linear Accelerator Ctr, Natl Accelerator Lab, Stanford, CA 94309 USA.
[Chen, X. R.; Liu, H.; Park, W.; Purohit, M. V.; White, R. M.; Wilson, J. R.] Univ S Carolina, Columbia, SC 29208 USA.
[Burchat, P. R.; Edwards, A. J.; Miyashita, T. S.] Stanford Univ, Stanford, CA 94305 USA.
[Ahmed, S.; Alam, M. S.; Ernst, J. A.; Pan, B.; Saeed, M. A.; Zain, S. B.] SUNY Albany, Albany, NY 12222 USA.
[Soffer, A.] Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel.
[Spanier, S. M.; Wogsland, B. J.] Univ Tennessee, Knoxville, TN 37996 USA.
[Eckmann, R.; Ritchie, J. L.; Ruland, A. M.; Schilling, C. J.; Schwitters, R. F.; Wray, B. C.] Univ Texas Austin, Austin, TX 78712 USA.
[Drummond, B. W.; Izen, J. M.; Lou, X. C.] Univ Texas Dallas, Richardson, TX 75083 USA.
[Bianchi, F.; Gamba, D.; Pelliccioni, M.] Ist Nazl Fis Nucl, Sez Turino, I-10125 Turin, Italy.
[Bianchi, F.; Gamba, D.; Pelliccioni, M.] Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, Italy.
[Bomben, M.; Bosisio, L.; Cartaro, C.; Della Ricca, G.; Lanceri, L.; Vitale, L.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.
[Bomben, M.; Bosisio, L.; Cartaro, C.; Della Ricca, G.; Lanceri, L.; Vitale, L.] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy.
[Azzolini, V.; Lopez-March, N.; Martinez-Vidal, F.; Milanes, D. A.; Oyanguren, A.] Univ Valencia, CSIC, IFIC, E-46071 Valencia, Spain.
[Albert, J.; Banerjee, Sw.; Bhuyan, B.; Choi, H. H. F.; Hamano, K.; King, G. J.; Kowalewski, R.; Lewczuk, M. J.; Nugent, I. M.; Roney, J. M.; Sobie, R. J.] Univ Victoria, Victoria, BC V8W 3P6, Canada.
[Gershon, T. J.; Harrison, P. F.; Ilic, J.; Latham, T. E.; Mohanty, G. B.; Puccio, E. M. T.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England.
[Band, H. R.; Chen, X.; Dasu, S.; Flood, K. T.; Pan, Y.; Prepost, R.; Vuosalo, C. O.; Wu, S. L.] Univ Wisconsin, Madison, WI 53706 USA.
[Carpinelli, M.] Univ Sassari, I-07100 Sassari, Italy.
[Anulli, F.; Baracchini, E.; Cavoto, G.; Faccini, R.; Ferrarotto, F.; Ferroni, F.; Gaspero, M.; Jackson, P. D.; Gioi, L. Li; Mazzoni, M. A.; Morganti, S.; Piredda, G.; Renga, F.; Voena, C.] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy.
RP Aubert, B (reprint author), Univ Savoie, CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules LAPP, F-74941 Annecy Le Vieux, France.
RI Rizzo, Giuliana/A-8516-2015; Della Ricca, Giuseppe/B-6826-2013; Negrini,
Matteo/C-8906-2014; Patrignani, Claudia/C-5223-2009; Monge, Maria
Roberta/G-9127-2012; Oyanguren, Arantza/K-6454-2014; Luppi,
Eleonora/A-4902-2015; White, Ryan/E-2979-2015; Neri, Nicola/G-3991-2012;
Forti, Francesco/H-3035-2011; Rotondo, Marcello/I-6043-2012; de Sangro,
Riccardo/J-2901-2012; Saeed, Mohammad Alam/J-7455-2012; dong,
liaoyuan/A-5093-2015; Calabrese, Roberto/G-4405-2015; Martinez Vidal,
F*/L-7563-2014; Kolomensky, Yury/I-3510-2015; Lo Vetere,
Maurizio/J-5049-2012; Lusiani, Alberto/N-2976-2015; Morandin,
Mauro/A-3308-2016; Lusiani, Alberto/A-3329-2016; Stracka,
Simone/M-3931-2015; Di Lodovico, Francesca/L-9109-2016; Pappagallo,
Marco/R-3305-2016; Calcaterra, Alessandro/P-5260-2015; Frey,
Raymond/E-2830-2016;
OI Pacetti, Simone/0000-0002-6385-3508; Rizzo,
Giuliana/0000-0003-1788-2866; Carpinelli, Massimo/0000-0002-8205-930X;
Sciacca, Crisostomo/0000-0002-8412-4072; Adye, Tim/0000-0003-0627-5059;
Lafferty, George/0000-0003-0658-4919; Faccini,
Riccardo/0000-0003-2613-5141; Martinelli, Maurizio/0000-0003-4792-9178;
Wilson, Robert/0000-0002-8184-4103; Della Ricca,
Giuseppe/0000-0003-2831-6982; Negrini, Matteo/0000-0003-0101-6963;
Patrignani, Claudia/0000-0002-5882-1747; Monge, Maria
Roberta/0000-0003-1633-3195; Oyanguren, Arantza/0000-0002-8240-7300;
Luppi, Eleonora/0000-0002-1072-5633; White, Ryan/0000-0003-3589-5900;
Neri, Nicola/0000-0002-6106-3756; Forti, Francesco/0000-0001-6535-7965;
Rotondo, Marcello/0000-0001-5704-6163; de Sangro,
Riccardo/0000-0002-3808-5455; Saeed, Mohammad Alam/0000-0002-3529-9255;
Lanceri, Livio/0000-0001-8220-3095; Ebert, Marcus/0000-0002-3014-1512;
Paoloni, Eugenio/0000-0001-5969-8712; Corwin, Luke/0000-0001-7143-3821;
Bettarini, Stefano/0000-0001-7742-2998; Cibinetto,
Gianluigi/0000-0002-3491-6231; dong, liaoyuan/0000-0002-4773-5050;
Calabrese, Roberto/0000-0002-1354-5400; Martinez Vidal,
F*/0000-0001-6841-6035; Kolomensky, Yury/0000-0001-8496-9975; Lo Vetere,
Maurizio/0000-0002-6520-4480; Lusiani, Alberto/0000-0002-6876-3288;
Morandin, Mauro/0000-0003-4708-4240; Lusiani,
Alberto/0000-0002-6876-3288; Stracka, Simone/0000-0003-0013-4714; Di
Lodovico, Francesca/0000-0003-3952-2175; Pappagallo,
Marco/0000-0001-7601-5602; Calcaterra, Alessandro/0000-0003-2670-4826;
Frey, Raymond/0000-0003-0341-2636; Hamel de Monchenault,
Gautier/0000-0002-3872-3592; Strube, Jan/0000-0001-7470-9301; Chen,
Chunhui /0000-0003-1589-9955; Raven, Gerhard/0000-0002-2897-5323
FU U.S. Department of Energy and National Science Foundation; Natural
Sciences and Engineering Research Council (Canada); Commissariat a
l'Energie Atomique and Institut National de Physique Nucleaire et de
Physique des Particules (France); Bundesministerium fur Bildung und
Forschung and Deutsche Forschungsgemeinschaft (Germany); Istituto
Nazionale di Fisica Nucleare (Italy); Foundation for Fundamental
Research on Matter (The Netherlands); Research Council of Norway;
Ministry of Science and Technology of the Russian Federation; Ministerio
de Educacion y Ciencia (Spain); Science and Technology Facilities
Council (United Kingdom); Marie-Curie IEF program (European Union); A.
P. Sloan Foundation
FX This work is supported by the U.S. Department of Energy and National
Science Foundation, the Natural Sciences and Engineering Research
Council (Canada), the Commissariat a l'Energie Atomique and Institut
National de Physique Nucleaire et de Physique des Particules (France),
the Bundesministerium fur Bildung und Forschung and Deutsche
Forschungsgemeinschaft (Germany), the Istituto Nazionale di Fisica
Nucleare (Italy), the Foundation for Fundamental Research on Matter (The
Netherlands), the Research Council of Norway, the Ministry of Science
and Technology of the Russian Federation, Ministerio de Educacion y
Ciencia (Spain), and the Science and Technology Facilities Council
(United Kingdom). Individuals have received support from the Marie-Curie
IEF program (European Union) and the A. P. Sloan Foundation.
NR 33
TC 207
Z9 207
U1 1
U2 10
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
EI 1550-2368
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 5
AR 052002
DI 10.1103/PhysRevD.80.052002
PG 16
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501MB
UT WOS:000270384900013
ER
PT J
AU Aubert, B
Karyotakis, Y
Lees, JP
Poireau, V
Prencipe, E
Prudent, X
Tisserand, V
Tico, JG
Grauges, E
Martinelli, M
Palano, A
Pappagallo, M
Eigen, G
Stugu, B
Sun, L
Battaglia, M
Brown, DN
Kerth, LT
Kolomensky, YG
Lynch, G
Osipenkov, IL
Tackmann, K
Tanabe, T
Hawkes, CM
Soni, N
Watson, AT
Koch, H
Schroeder, T
Asgeirsson, DJ
Fulsom, BG
Hearty, C
Mattison, TS
McKenna, JA
Barrett, M
Khan, A
Randle-Conde, A
Blinov, VE
Bukin, AD
Buzykaev, AR
Druzhinin, VP
Golubev, VB
Onuchin, AP
Serednyakov, SI
Skovpen, YI
Solodov, EP
Todyshev, KY
Bondioli, M
Curry, S
Eschrich, I
Kirkby, D
Lankford, AJ
Lund, P
Mandelkern, M
Martin, EC
Stoker, DP
Atmacan, H
Gary, JW
Liu, F
Long, O
Vitug, GM
Yasin, Z
Sharma, V
Campagnari, C
Hong, TM
Kovalskyi, D
Mazur, MA
Richman, JD
Beck, TW
Eisner, AM
Heusch, CA
Kroseberg, J
Lockman, WS
Martinez, AJ
Schalk, T
Schumm, BA
Seiden, A
Wang, L
Winstrom, LO
Cheng, CH
Doll, DA
Echenard, B
Fang, F
Hitlin, DG
Narsky, I
Piatenko, T
Porter, FC
Andreassen, R
Mancinelli, G
Meadows, BT
Mishra, K
Sokoloff, MD
Bloom, PC
Ford, WT
Gaz, A
Hirschauer, JF
Nagel, M
Nauenberg, U
Smith, JG
Wagner, SR
Ayad, R
Toki, WH
Wilson, RJ
Feltresi, E
Hauke, A
Jasper, H
Karbach, TM
Merkel, J
Petzold, A
Spaan, B
Wacker, K
Kobel, MJ
Nogowski, R
Schubert, KR
Schwierz, R
Volk, A
Bernard, D
Latour, E
Verderi, M
Clark, PJ
Playfer, S
Watson, JE
Andreotti, M
Bettoni, D
Bozzi, C
Calabrese, R
Cecchi, A
Cibinetto, G
Fioravanti, E
Franchini, P
Luppi, E
Munerato, M
Negrini, M
Petrella, A
Piemontese, L
Santoro, V
Baldini-Ferroli, R
Calcaterra, A
de Sangro, R
Finocchiaro, G
Pacetti, S
Patteri, P
Peruzzi, IM
Piccolo, M
Rama, M
Zallo, A
Contri, R
Guido, E
Lo Vetere, M
Monge, MR
Passaggio, S
Patrignani, C
Robutti, E
Tosi, S
Chaisanguanthum, KS
Morii, M
Adametz, A
Marks, J
Schenk, S
Uwer, U
Bernlochner, FU
Klose, V
Lacker, HM
Bard, DJ
Dauncey, PD
Tibbetts, M
Behera, PK
Charles, MJ
Mallik, U
Cochran, J
Crawley, HB
Dong, L
Eyges, V
Meyer, WT
Prell, S
Rosenberg, EI
Rubin, AE
Gao, YY
Gritsan, AV
Guo, ZJ
Arnaud, N
Bequilleux, J
D'Orazio, A
Davier, M
Derkach, D
da Costa, JF
Grosdidier, G
Le Diberder, F
Lepeltier, V
Lutz, AM
Malaescu, B
Pruvot, S
Roudeau, P
Schune, MH
Serrano, J
Sordini, V
Stocchi, A
Wormser, G
Lange, DJ
Wright, DM
Bingham, I
Burke, JP
Chavez, CA
Fry, JR
Gabathuler, E
Gamet, R
Hutchcroft, DE
Payne, DJ
Touramanis, C
Bevan, AJ
Clarke, CK
Di Lodovico, F
Sacco, R
Sigamani, M
Cowan, G
Paramesvaran, S
Wren, AC
Brown, DN
Davis, CL
Denig, AG
Fritsch, M
Gradl, W
Hafner, A
Alwyn, KE
Bailey, D
Barlow, RJ
Jackson, G
Lafferty, GD
West, TJ
Yi, JI
Anderson, J
Chen, C
Jawahery, A
Roberts, DA
Simi, G
Tuggle, JM
Dallapiccola, C
Salvati, E
Cowan, R
Dujmic, D
Fisher, PH
Henderson, SW
Sciolla, G
Spitznagel, M
Yamamoto, RK
Zhao, M
Patel, PM
Robertson, SH
Schram, M
Lazzaro, A
Lombardo, V
Palombo, F
Stracka, S
Bauer, JM
Cremaldi, L
Godang, R
Kroeger, R
Sonnek, P
Summers, DJ
Zhao, HW
Simard, M
Taras, P
Nicholson, H
De Nardo, G
Lista, L
Monorchio, D
Onorato, G
Sciacca, C
Raven, G
Snoek, HL
Jessop, CP
Knoepfel, KJ
LoSecco, JM
Wang, WF
Corwin, LA
Honscheid, K
Kagan, H
Kass, R
Morris, JP
Rahimi, AM
Regensburger, JJ
Sekula, SJ
Wong, QK
Blount, NL
Brau, J
Frey, R
Igonkina, O
Kolb, JA
Lu, M
Rahmat, R
Sinev, NB
Strom, D
Strube, J
Torrence, E
Castelli, G
Gagliardi, N
Margoni, M
Morandin, M
Posocco, M
Rotondo, M
Simonetto, F
Stroili, R
Voci, C
Sanchez, PD
Ben-Haim, E
Bonneaud, GR
Briand, H
Chauveau, J
Hamon, O
Leruste, P
Marchiori, G
Ocariz, J
Perez, A
Prendki, J
Sitt, S
Gladney, L
Biasini, M
Manoni, E
Angelini, C
Batignani, G
Bettarini, S
Calderini, G
Carpinelli, M
Cervelli, A
Forti, F
Giorgi, MA
Lusiani, A
Morganti, M
Neri, N
Paoloni, E
Rizzo, G
Walsh, JJ
Pegna, DL
Lu, C
Olsen, J
Smith, AJS
Telnov, AV
Anulli, F
Baracchini, E
Cavoto, G
Faccini, R
Ferrarotto, F
Ferroni, F
Gaspero, M
Jackson, PD
Gioi, LL
Mazzoni, MA
Morganti, S
Piredda, G
Renga, F
Voena, C
Ebert, M
Hartmann, T
Leddig, T
Schroder, H
Waldi, R
Adye, T
Franek, B
Olaiya, EO
Wilson, FF
Emery, S
Esteve, L
de Monchenault, GH
Kozanecki, W
Vasseur, G
Yeche, C
Zito, M
Allen, MT
Aston, D
Bartoldus, R
Benitez, JF
Cenci, R
Coleman, JP
Convery, MR
Dingfelder, JC
Dorfan, J
Dubois-Felsmann, GP
Dunwoodie, W
Field, RC
Sevilla, MF
Gabareen, AM
Graham, MT
Grenier, P
Hast, C
Innes, WR
Kaminski, J
Kelsey, MH
Kim, H
Kim, P
Kocian, ML
Leith, DWGS
Li, S
Lindquist, B
Luitz, S
Luth, V
Lynch, HL
MacFarlane, DB
Marsiske, H
Messner, R
Muller, DR
Neal, H
Nelson, S
O'Grady, CP
Ofte, I
Perl, M
Ratcliff, BN
Roodman, A
Salnikov, AA
Schindler, RH
Schwiening, J
Snyder, A
Su, D
Sullivan, MK
Suzuki, K
Swain, SK
Thompson, JM
Va'vra, J
Wagner, AP
Weaver, M
West, CA
Wisniewski, WJ
Wittgen, M
Wright, DH
Wulsin, HW
Yarritu, AK
Young, CC
Ziegler, V
Chen, XR
Liu, H
Park, W
Purohit, MV
White, RM
Wilson, JR
Burchat, PR
Edwards, AJ
Miyashita, TS
Ahmed, S
Alam, MS
Ernst, JA
Pan, B
Saeed, MA
Zain, SB
Soffer, A
Spanier, SM
Wogsland, BJ
Eckmann, R
Ritchie, JL
Ruland, AM
Schilling, CJ
Schwitters, RF
Wray, BC
Drummond, BW
Izen, JM
Lou, XC
Bianchi, F
Gamba, D
Pelliccioni, M
Bomben, M
Bosisio, L
Cartaro, C
Della Ricca, G
Lanceri, L
Vitale, L
Azzolini, V
Lopez-March, N
Martinez-Vidal, F
Milanes, DA
Oyanguren, A
Albert, J
Banerjee, S
Bhuyan, B
Choi, HHF
Hamano, K
King, GJ
Kowalewski, R
Lewczuk, MJ
Nugent, IM
Roney, JM
Sobie, RJ
Gershon, TJ
Harrison, PF
Ilic, J
Latham, TE
Mohanty, GB
Puccio, EMT
Band, HR
Chen, X
Dasu, S
Flood, KT
Pan, Y
Prepost, R
Vuosalo, CO
Wu, SL
AF Aubert, B.
Karyotakis, Y.
Lees, J. P.
Poireau, V.
Prencipe, E.
Prudent, X.
Tisserand, V.
Garra Tico, J.
Grauges, E.
Martinelli, M.
Palano, A.
Pappagallo, M.
Eigen, G.
Stugu, B.
Sun, L.
Battaglia, M.
Brown, D. N.
Kerth, L. T.
Kolomensky, Yu. G.
Lynch, G.
Osipenkov, I. L.
Tackmann, K.
Tanabe, T.
Hawkes, C. M.
Soni, N.
Watson, A. T.
Koch, H.
Schroeder, T.
Asgeirsson, D. J.
Fulsom, B. G.
Hearty, C.
Mattison, T. S.
McKenna, J. A.
Barrett, M.
Khan, A.
Randle-Conde, A.
Blinov, V. E.
Bukin, A. D.
Buzykaev, A. R.
Druzhinin, V. P.
Golubev, V. B.
Onuchin, A. P.
Serednyakov, S. I.
Skovpen, Yu. I.
Solodov, E. P.
Todyshev, K. Yu.
Bondioli, M.
Curry, S.
Eschrich, I.
Kirkby, D.
Lankford, A. J.
Lund, P.
Mandelkern, M.
Martin, E. C.
Stoker, D. P.
Atmacan, H.
Gary, J. W.
Liu, F.
Long, O.
Vitug, G. M.
Yasin, Z.
Sharma, V.
Campagnari, C.
Hong, T. M.
Kovalskyi, D.
Mazur, M. A.
Richman, J. D.
Beck, T. W.
Eisner, A. M.
Heusch, C. A.
Kroseberg, J.
Lockman, W. S.
Martinez, A. J.
Schalk, T.
Schumm, B. A.
Seiden, A.
Wang, L.
Winstrom, L. O.
Cheng, C. H.
Doll, D. A.
Echenard, B.
Fang, F.
Hitlin, D. G.
Narsky, I.
Piatenko, T.
Porter, F. C.
Andreassen, R.
Mancinelli, G.
Meadows, B. T.
Mishra, K.
Sokoloff, M. D.
Bloom, P. C.
Ford, W. T.
Gaz, A.
Hirschauer, J. F.
Nagel, M.
Nauenberg, U.
Smith, J. G.
Wagner, S. R.
Ayad, R.
Toki, W. H.
Wilson, R. J.
Feltresi, E.
Hauke, A.
Jasper, H.
Karbach, T. M.
Merkel, J.
Petzold, A.
Spaan, B.
Wacker, K.
Kobel, M. J.
Nogowski, R.
Schubert, K. R.
Schwierz, R.
Volk, A.
Bernard, D.
Latour, E.
Verderi, M.
Clark, P. J.
Playfer, S.
Watson, J. E.
Andreotti, M.
Bettoni, D.
Bozzi, C.
Calabrese, R.
Cecchi, A.
Cibinetto, G.
Fioravanti, E.
Franchini, P.
Luppi, E.
Munerato, M.
Negrini, M.
Petrella, A.
Piemontese, L.
Santoro, V.
Baldini-Ferroli, R.
Calcaterra, A.
de Sangro, R.
Finocchiaro, G.
Pacetti, S.
Patteri, P.
Peruzzi, I. M.
Piccolo, M.
Rama, M.
Zallo, A.
Contri, R.
Guido, E.
Lo Vetere, M.
Monge, M. R.
Passaggio, S.
Patrignani, C.
Robutti, E.
Tosi, S.
Chaisanguanthum, K. S.
Morii, M.
Adametz, A.
Marks, J.
Schenk, S.
Uwer, U.
Bernlochner, F. U.
Klose, V.
Lacker, H. M.
Bard, D. J.
Dauncey, P. D.
Tibbetts, M.
Behera, P. K.
Charles, M. J.
Mallik, U.
Cochran, J.
Crawley, H. B.
Dong, L.
Eyges, V.
Meyer, W. T.
Prell, S.
Rosenberg, E. I.
Rubin, A. E.
Gao, Y. Y.
Gritsan, A. V.
Guo, Z. J.
Arnaud, N.
Bequilleux, J.
D'Orazio, A.
Davier, M.
Derkach, D.
da Costa, J. Firmino
Grosdidier, G.
Le Diberder, F.
Lepeltier, V.
Lutz, A. M.
Malaescu, B.
Pruvot, S.
Roudeau, P.
Schune, M. H.
Serrano, J.
Sordini, V.
Stocchi, A.
Wormser, G.
Lange, D. J.
Wright, D. M.
Bingham, I.
Burke, J. P.
Chavez, C. A.
Fry, J. R.
Gabathuler, E.
Gamet, R.
Hutchcroft, D. E.
Payne, D. J.
Touramanis, C.
Bevan, A. J.
Clarke, C. K.
Di Lodovico, F.
Sacco, R.
Sigamani, M.
Cowan, G.
Paramesvaran, S.
Wren, A. C.
Brown, D. N.
Davis, C. L.
Denig, A. G.
Fritsch, M.
Gradl, W.
Hafner, A.
Alwyn, K. E.
Bailey, D.
Barlow, R. J.
Jackson, G.
Lafferty, G. D.
West, T. J.
Yi, J. I.
Anderson, J.
Chen, C.
Jawahery, A.
Roberts, D. A.
Simi, G.
Tuggle, J. M.
Dallapiccola, C.
Salvati, E.
Cowan, R.
Dujmic, D.
Fisher, P. H.
Henderson, S. W.
Sciolla, G.
Spitznagel, M.
Yamamoto, R. K.
Zhao, M.
Patel, P. M.
Robertson, S. H.
Schram, M.
Lazzaro, A.
Lombardo, V.
Palombo, F.
Stracka, S.
Bauer, J. M.
Cremaldi, L.
Godang, R.
Kroeger, R.
Sonnek, P.
Summers, D. J.
Zhao, H. W.
Simard, M.
Taras, P.
Nicholson, H.
De Nardo, G.
Lista, L.
Monorchio, D.
Onorato, G.
Sciacca, C.
Raven, G.
Snoek, H. L.
Jessop, C. P.
Knoepfel, K. J.
LoSecco, J. M.
Wang, W. F.
Corwin, L. A.
Honscheid, K.
Kagan, H.
Kass, R.
Morris, J. P.
Rahimi, A. M.
Regensburger, J. J.
Sekula, S. J.
Wong, Q. K.
Blount, N. L.
Brau, J.
Frey, R.
Igonkina, O.
Kolb, J. A.
Lu, M.
Rahmat, R.
Sinev, N. B.
Strom, D.
Strube, J.
Torrence, E.
Castelli, G.
Gagliardi, N.
Margoni, M.
Morandin, M.
Posocco, M.
Rotondo, M.
Simonetto, F.
Stroili, R.
Voci, C.
Sanchez, P. del Amo
Ben-Haim, E.
Bonneaud, G. R.
Briand, H.
Chauveau, J.
Hamon, O.
Leruste, Ph.
Marchiori, G.
Ocariz, J.
Perez, A.
Prendki, J.
Sitt, S.
Gladney, L.
Biasini, M.
Manoni, E.
Angelini, C.
Batignani, G.
Bettarini, S.
Calderini, G.
Carpinelli, M.
Cervelli, A.
Forti, F.
Giorgi, M. A.
Lusiani, A.
Morganti, M.
Neri, N.
Paoloni, E.
Rizzo, G.
Walsh, J. J.
Pegna, D. Lopes
Lu, C.
Olsen, J.
Smith, A. J. S.
Telnov, A. V.
Anulli, F.
Baracchini, E.
Cavoto, G.
Faccini, R.
Ferrarotto, F.
Ferroni, F.
Gaspero, M.
Jackson, P. D.
Gioi, L. Li
Mazzoni, M. A.
Morganti, S.
Piredda, G.
Renga, F.
Voena, C.
Ebert, M.
Hartmann, T.
Leddig, T.
Schroeder, H.
Waldi, R.
Adye, T.
Franek, B.
Olaiya, E. O.
Wilson, F. F.
Emery, S.
Esteve, L.
de Monchenault, G. Hamel
Kozanecki, W.
Vasseur, G.
Yeche, Ch.
Zito, M.
Allen, M. T.
Aston, D.
Bartoldus, R.
Benitez, J. F.
Cenci, R.
Coleman, J. P.
Convery, M. R.
Dingfelder, J. C.
Dorfan, J.
Dubois-Felsmann, G. P.
Dunwoodie, W.
Field, R. C.
Sevilla, M. Franco
Gabareen, A. M.
Graham, M. T.
Grenier, P.
Hast, C.
Innes, W. R.
Kaminski, J.
Kelsey, M. H.
Kim, H.
Kim, P.
Kocian, M. L.
Leith, D. W. G. S.
Li, S.
Lindquist, B.
Luitz, S.
Luth, V.
Lynch, H. L.
MacFarlane, D. B.
Marsiske, H.
Messner, R.
Muller, D. R.
Neal, H.
Nelson, S.
O'Grady, C. P.
Ofte, I.
Perl, M.
Ratcliff, B. N.
Roodman, A.
Salnikov, A. A.
Schindler, R. H.
Schwiening, J.
Snyder, A.
Su, D.
Sullivan, M. K.
Suzuki, K.
Swain, S. K.
Thompson, J. M.
Va'vra, J.
Wagner, A. P.
Weaver, M.
West, C. A.
Wisniewski, W. J.
Wittgen, M.
Wright, D. H.
Wulsin, H. W.
Yarritu, A. K.
Young, C. C.
Ziegler, V.
Chen, X. R.
Liu, H.
Park, W.
Purohit, M. V.
White, R. M.
Wilson, J. R.
Burchat, P. R.
Edwards, A. J.
Miyashita, T. S.
Ahmed, S.
Alam, M. S.
Ernst, J. A.
Pan, B.
Saeed, M. A.
Zain, S. B.
Soffer, A.
Spanier, S. M.
Wogsland, B. J.
Eckmann, R.
Ritchie, J. L.
Ruland, A. M.
Schilling, C. J.
Schwitters, R. F.
Wray, B. C.
Drummond, B. W.
Izen, J. M.
Lou, X. C.
Bianchi, F.
Gamba, D.
Pelliccioni, M.
Bomben, M.
Bosisio, L.
Cartaro, C.
Della Ricca, G.
Lanceri, L.
Vitale, L.
Azzolini, V.
Lopez-March, N.
Martinez-Vidal, F.
Milanes, D. A.
Oyanguren, A.
Albert, J.
Banerjee, Sw.
Bhuyan, B.
Choi, H. H. F.
Hamano, K.
King, G. J.
Kowalewski, R.
Lewczuk, M. J.
Nugent, I. M.
Roney, J. M.
Sobie, R. J.
Gershon, T. J.
Harrison, P. F.
Ilic, J.
Latham, T. E.
Mohanty, G. B.
Puccio, E. M. T.
Band, H. R.
Chen, X.
Dasu, S.
Flood, K. T.
Pan, Y.
Prepost, R.
Vuosalo, C. O.
Wu, S. L.
CA BaBar Collaboration
TI Observation of the baryonic B-decay (B)over-bar(0) ->
Lambda(+)(c)(p)over-barK(-)pi(+)
SO PHYSICAL REVIEW D
LA English
DT Article
AB We report the observation of the baryonic B-decay (B) over bar (0) -> Lambda(+)(c)(p) over barK(-)pi(+), excluding contributions from the decay (B) over bar (0) -> Lambda(+)(c)(Lambda) over barK(-). Using a data sample of 467 x 10(6) B (B) over bar pairs collected with the BABAR detector at the PEP-II storage ring at SLAC, the measured branching fraction is (4.33 +/- 0.82(stat) +/- 0.33(syst) +/- 1.13(Lambda c+)) x 10(-5). In addition we find evidence for the resonant decay (B) over bar (0) -> Sigma(c)(2455)(++)(p) over barK(-) and determine its branching fraction to be (1.11 +/- 0.30(stat) +/- 0.09(syst) +/- 0.29(Lambda c+)) x 10(-5). The errors are statistical, systematic, and due to the uncertainty in the Lambda(+)(c) branching fraction. For the resonant decay (B) over bar (0) -> Lambda(+)(c)(p) over bar(K) over bar*(0) we obtain an upper limit of 2.42 x 10(-5) at 90% confidence level.
C1 [Aubert, B.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prencipe, E.; Prudent, X.; Tisserand, V.] Univ Savoie, CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules LAPP, F-74941 Annecy Le Vieux, France.
[Garra Tico, J.; Grauges, E.] Univ Barcelona, Fac Fis, Dept Estructura & Constituents Mat, E-08028 Barcelona, Spain.
[Martinelli, M.; Palano, A.; Pappagallo, M.; Bianchi, F.; Gamba, D.; Pelliccioni, M.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.
[Martinelli, M.; Palano, A.; Pappagallo, M.; Bianchi, F.; Gamba, D.; Pelliccioni, M.] Univ Bari, Dipartmento Fis, I-70126 Bari, Italy.
[Eigen, G.; Stugu, B.; Sun, L.] Univ Bergen, Inst Phys, N-5007 Bergen, Norway.
[Battaglia, M.; Brown, D. N.; Kerth, L. T.; Kolomensky, Yu. G.; Lynch, G.; Osipenkov, I. L.; Tackmann, K.; Tanabe, T.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Hawkes, C. M.; Soni, N.; Watson, A. T.; Adametz, A.] Univ Birmingham, Birmingham B15 2TT, W Midlands, England.
[Koch, H.; Schroeder, T.] Ruhr Univ Bochum, Inst Expt Phys, D-44780 Bochum, Germany.
[Asgeirsson, D. J.; Fulsom, B. G.; Hearty, C.; Mattison, T. S.; McKenna, J. A.] Univ British Columbia, Vancouver, BC V6T 1Z1, Canada.
[Barrett, M.; Khan, A.; Randle-Conde, A.] Brunel Univ, Uxbridge UB8 3PH, Middx, England.
[Blinov, V. E.; Bukin, A. D.; Buzykaev, A. R.; Druzhinin, V. P.; Golubev, V. B.; Onuchin, A. P.; Serednyakov, S. I.; Skovpen, Yu. I.; Solodov, E. P.; Todyshev, K. Yu.] Budker Inst Nucl Phys, Novosibirsk 630090, Russia.
[Bondioli, M.; Curry, S.; Eschrich, I.; Kirkby, D.; Lankford, A. J.; Lund, P.; Mandelkern, M.; Martin, E. C.; Stoker, D. P.] Univ Calif Irvine, Irvine, CA 92697 USA.
[Atmacan, H.; Gary, J. W.; Liu, F.; Long, O.; Vitug, G. M.; Yasin, Z.] Univ Calif Riverside, Riverside, CA 92521 USA.
[Sharma, V.] Univ Calif San Diego, La Jolla, CA 92093 USA.
[Campagnari, C.; Hong, T. M.; Kovalskyi, D.; Mazur, M. A.; Richman, J. D.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
[Beck, T. W.; Eisner, A. M.; Heusch, C. A.; Kroseberg, J.; Lockman, W. S.; Martinez, A. J.; Schalk, T.; Schumm, B. A.; Seiden, A.; Wang, L.; Winstrom, L. O.] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA.
[Cheng, C. H.; Doll, D. A.; Echenard, B.; Fang, F.; Hitlin, D. G.; Narsky, I.; Piatenko, T.; Porter, F. C.] CALTECH, Pasadena, CA 91125 USA.
[Andreassen, R.; Mancinelli, G.; Meadows, B. T.; Mishra, K.; Sokoloff, M. D.] Univ Cincinnati, Cincinnati, OH 45221 USA.
[Bloom, P. C.; Ford, W. T.; Gaz, A.; Hirschauer, J. F.; Nagel, M.; Nauenberg, U.; Smith, J. G.; Wagner, S. R.] Univ Colorado, Boulder, CO 80309 USA.
[Ayad, R.; Toki, W. H.; Wilson, R. J.] Colorado State Univ, Ft Collins, CO 80523 USA.
[Feltresi, E.; Hauke, A.; Jasper, H.; Karbach, T. M.; Merkel, J.; Petzold, A.; Spaan, B.; Wacker, K.] Tech Univ Dortmund, Fac Phys, D-44221 Dortmund, Germany.
[Kobel, M. J.; Nogowski, R.; Schubert, K. R.; Schwierz, R.; Volk, A.] Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany.
[Bernard, D.; Latour, E.; Verderi, M.] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France.
[Clark, P. J.; Playfer, S.; Watson, J. E.] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland.
[Andreotti, M.; Bettoni, D.; Bozzi, C.; Calabrese, R.; Cecchi, A.; Cibinetto, G.; Fioravanti, E.; Franchini, P.; Luppi, E.; Munerato, M.; Negrini, M.; Petrella, A.; Piemontese, L.; Santoro, V.] Ist Nazl Fis Nucl, Sez Ferrara, I-44100 Ferrara, Italy.
[Andreotti, M.; Calabrese, R.; Cecchi, A.; Cibinetto, G.; Franchini, P.; Luppi, E.; Munerato, M.; Negrini, M.; Petrella, A.; Santoro, V.] Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy.
[Baldini-Ferroli, R.; Calcaterra, A.; de Sangro, R.; Finocchiaro, G.; Pacetti, S.; Patteri, P.; Peruzzi, I. M.; Piccolo, M.; Rama, M.; Zallo, A.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
[Contri, R.; Guido, E.; Lo Vetere, M.; Monge, M. R.; Passaggio, S.; Patrignani, C.; Robutti, E.; Tosi, S.] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy.
[Contri, R.; Guido, E.; Lo Vetere, M.; Monge, M. R.; Patrignani, C.; Tosi, S.] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy.
[Chaisanguanthum, K. S.; Morii, M.] Harvard Univ, Cambridge, MA 02138 USA.
[Adametz, A.; Marks, J.; Schenk, S.; Uwer, U.] Univ Heidelberg, Inst Phys, D-69120 Heidelberg, Germany.
[Bernlochner, F. U.; Klose, V.; Lacker, H. M.] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany.
[Bard, D. J.; Dauncey, P. D.; Tibbetts, M.] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England.
[Behera, P. K.; Charles, M. J.; Mallik, U.] Univ Iowa, Iowa City, IA 52242 USA.
[Cochran, J.; Crawley, H. B.; Dong, L.; Eyges, V.; Meyer, W. T.; Prell, S.; Rosenberg, E. I.; Rubin, A. E.] Iowa State Univ, Ames, IA 50011 USA.
[Gao, Y. Y.; Gritsan, A. V.; Guo, Z. J.] Johns Hopkins Univ, Baltimore, MD 21218 USA.
[Arnaud, N.; Bequilleux, J.; D'Orazio, A.; Davier, M.; Derkach, D.; da Costa, J. Firmino; Grosdidier, G.; Le Diberder, F.; Lepeltier, V.; Lutz, A. M.; Malaescu, B.; Pruvot, S.; Roudeau, P.; Schune, M. H.; Serrano, J.; Sordini, V.; Stocchi, A.; Wormser, G.] CNRS, IN2P3, Lab Accelerateur Lineaire, F-91898 Orsay, France.
[Arnaud, N.; Bequilleux, J.; D'Orazio, A.; Davier, M.; Derkach, D.; da Costa, J. Firmino; Grosdidier, G.; Le Diberder, F.; Lepeltier, V.; Lutz, A. M.; Malaescu, B.; Pruvot, S.; Roudeau, P.; Schune, M. H.; Serrano, J.; Sordini, V.; Stocchi, A.; Wormser, G.] Univ Paris 11, Ctr Sci Orsay, F-91898 Orsay, France.
[Lange, D. J.; Wright, D. M.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Bingham, I.; Burke, J. P.; Chavez, C. A.; Fry, J. R.; Gabathuler, E.; Gamet, R.; Hutchcroft, D. E.; Payne, D. J.; Touramanis, C.] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England.
[Bevan, A. J.; Clarke, C. K.; Di Lodovico, F.; Sacco, R.; Sigamani, M.] Univ London, London E1 4NS, England.
[Cowan, G.; Paramesvaran, S.; Wren, A. C.] Univ London, Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England.
[Brown, D. N.; Davis, C. L.] Univ Louisville, Louisville, KY 40292 USA.
[Denig, A. G.; Fritsch, M.; Gradl, W.; Hafner, A.] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany.
[Alwyn, K. E.; Bailey, D.; Barlow, R. J.; Jackson, G.; Lafferty, G. D.; West, T. J.; Yi, J. I.] Univ Manchester, Manchester M13 9PL, Lancs, England.
[Anderson, J.; Chen, C.; Jawahery, A.; Roberts, D. A.; Simi, G.; Tuggle, J. M.] Univ Maryland, College Pk, MD 20742 USA.
[Dallapiccola, C.; Salvati, E.] Univ Massachusetts, Amherst, MA 01003 USA.
[Cowan, R.; Dujmic, D.; Fisher, P. H.; Henderson, S. W.; Sciolla, G.; Spitznagel, M.; Yamamoto, R. K.; Zhao, M.] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA.
[Patel, P. M.; Robertson, S. H.; Schram, M.] McGill Univ, Montreal, PQ H3A 2T8, Canada.
[Lazzaro, A.; Lombardo, V.; Palombo, F.; Stracka, S.] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy.
[Lazzaro, A.; Palombo, F.; Stracka, S.] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.
[Bauer, J. M.; Cremaldi, L.; Godang, R.; Kroeger, R.; Sonnek, P.; Summers, D. J.; Zhao, H. W.] Univ Mississippi, University, MS 38677 USA.
[Simard, M.; Taras, P.] Univ Montreal, Montreal, PQ H3C 3J7, Canada.
[Nicholson, H.] Mt Holyoke Coll, S Hadley, MA 01075 USA.
[De Nardo, G.; Monorchio, D.; Onorato, G.; Sciacca, C.] Univ Naples Federico 2, Dipartimento Sci Fis, I-80126 Naples, Italy.
[Raven, G.; Snoek, H. L.] Natl Inst Nucl & High Energy Phys, NIKHEF, NL-1009 DB Amsterdam, Netherlands.
[Jessop, C. P.; Knoepfel, K. J.; LoSecco, J. M.; Wang, W. F.] Univ Notre Dame, Notre Dame, IN 46556 USA.
[Corwin, L. A.; Honscheid, K.; Kagan, H.; Kass, R.; Morris, J. P.; Rahimi, A. M.; Regensburger, J. J.; Sekula, S. J.; Wong, Q. K.] Ohio State Univ, Columbus, OH 43210 USA.
[Blount, N. L.; Brau, J.; Frey, R.; Igonkina, O.; Kolb, J. A.; Lu, M.; Rahmat, R.; Sinev, N. B.; Strom, D.; Strube, J.; Torrence, E.] Univ Oregon, Eugene, OR 97403 USA.
[Castelli, G.; Gagliardi, N.; Margoni, M.; Morandin, M.; Posocco, M.; Rotondo, M.; Simonetto, F.; Stroili, R.; Voci, C.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.
[Castelli, G.; Gagliardi, N.; Margoni, M.; Simonetto, F.; Stroili, R.; Voci, C.; Forti, F.; Morganti, M.] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy.
[Sanchez, P. del Amo; Ben-Haim, E.; Bonneaud, G. R.; Briand, H.; Chauveau, J.; Hamon, O.; Leruste, Ph.; Marchiori, G.; Ocariz, J.; Perez, A.; Prendki, J.; Sitt, S.; Calderini, G.] Univ Paris 07, Univ Paris 06, CNRS, IN2P3,Lab Phys Nucl & Hautes Energies, F-75252 Paris, France.
[Gladney, L.] Univ Penn, Philadelphia, PA 19104 USA.
[Biasini, M.; Manoni, E.] Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy.
[Peruzzi, I. M.; Biasini, M.; Manoni, E.] Univ Perugia, Dipartimento Fis, I-06100 Perugia, Italy.
[Lusiani, A.] Scuola Normale Super Pisa, I-56127 Pisa, Italy.
[Pegna, D. Lopes; Lu, C.; Olsen, J.; Smith, A. J. S.; Telnov, A. V.] Princeton Univ, Princeton, NJ 08544 USA.
[Anulli, F.; Baracchini, E.; Cavoto, G.; Faccini, R.; Ferrarotto, F.; Ferroni, F.; Gaspero, M.; Jackson, P. D.; Gioi, L. Li; Mazzoni, M. A.; Morganti, S.; Piredda, G.; Renga, F.; Voena, C.] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy.
[Baracchini, E.; Faccini, R.; Ferroni, F.; Gaspero, M.; Renga, F.] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy.
[Ebert, M.; Hartmann, T.; Leddig, T.; Schroeder, H.; Waldi, R.] Univ Rostock, D-18051 Rostock, Germany.
[Adye, T.; Franek, B.; Olaiya, E. O.; Wilson, F. F.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
[Emery, S.; Esteve, L.; de Monchenault, G. Hamel; Kozanecki, W.; Vasseur, G.; Yeche, Ch.; Zito, M.] CEA, SPP, Ctr Saclay, Gif Sur Yvette, France.
[Allen, M. T.; Aston, D.; Bartoldus, R.; Benitez, J. F.; Cenci, R.; Coleman, J. P.; Convery, M. R.; Dingfelder, J. C.; Dorfan, J.; Dubois-Felsmann, G. P.; Dunwoodie, W.; Field, R. C.; Sevilla, M. Franco; Gabareen, A. M.; Graham, M. T.; Grenier, P.; Hast, C.; Innes, W. R.; Kaminski, J.; Kelsey, M. H.; Kim, H.; Kim, P.; Kocian, M. L.; Leith, D. W. G. S.; Li, S.; Lindquist, B.; Luitz, S.; Luth, V.; Lynch, H. L.; MacFarlane, D. B.; Marsiske, H.; Messner, R.; Muller, D. R.; Neal, H.; Nelson, S.; O'Grady, C. P.; Ofte, I.; Perl, M.; Ratcliff, B. N.; Roodman, A.; Salnikov, A. A.; Schindler, R. H.; Schwiening, J.; Snyder, A.; Su, D.; Sullivan, M. K.; Suzuki, K.; Swain, S. K.; Thompson, J. M.; Va'vra, J.; Wagner, A. P.; Weaver, M.; West, C. A.; Wisniewski, W. J.; Wittgen, M.; Wright, D. H.; Wulsin, H. W.; Yarritu, A. K.; Young, C. C.; Ziegler, V.] Stanford Linear Accelerator Ctr, Natl Accelerator Lab, Stanford, CA 94309 USA.
[Chen, X. R.; Liu, H.; Park, W.; Purohit, M. V.; White, R. M.; Wilson, J. R.] Univ S Carolina, Columbia, SC 29208 USA.
[Burchat, P. R.; Edwards, A. J.; Miyashita, T. S.] Stanford Univ, Stanford, CA 94305 USA.
[Ahmed, S.; Alam, M. S.; Ernst, J. A.; Pan, B.; Saeed, M. A.; Zain, S. B.] SUNY Albany, Albany, NY 12222 USA.
[Soffer, A.] Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel.
[Spanier, S. M.; Wogsland, B. J.] Univ Tennessee, Knoxville, TN 37996 USA.
[Eckmann, R.; Ritchie, J. L.; Ruland, A. M.; Schilling, C. J.; Schwitters, R. F.; Wray, B. C.] Univ Texas Austin, Austin, TX 78712 USA.
[Drummond, B. W.; Izen, J. M.; Lou, X. C.] Univ Texas Dallas, Richardson, TX 75083 USA.
[Bianchi, F.; Gamba, D.; Pelliccioni, M.] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy.
[Bianchi, F.; Gamba, D.; Pelliccioni, M.] Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, Italy.
[Bomben, M.; Bosisio, L.; Cartaro, C.; Della Ricca, G.; Lanceri, L.; Vitale, L.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.
[Bomben, M.; Bosisio, L.; Cartaro, C.; Della Ricca, G.; Lanceri, L.; Vitale, L.] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy.
[Azzolini, V.; Lopez-March, N.; Martinez-Vidal, F.; Milanes, D. A.; Oyanguren, A.] Univ Valencia, CSIC, IFIC, E-46071 Valencia, Spain.
[Albert, J.; Banerjee, Sw.; Bhuyan, B.; Choi, H. H. F.; Hamano, K.; King, G. J.; Kowalewski, R.; Lewczuk, M. J.; Nugent, I. M.; Roney, J. M.; Sobie, R. J.] Univ Victoria, Victoria, BC V8W 3P6, Canada.
[Gershon, T. J.; Harrison, P. F.; Ilic, J.; Latham, T. E.; Mohanty, G. B.; Puccio, E. M. T.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England.
[Band, H. R.; Chen, X.; Dasu, S.; Flood, K. T.; Pan, Y.; Prepost, R.; Vuosalo, C. O.; Wu, S. L.] Univ Wisconsin, Madison, WI 53706 USA.
[Carpinelli, M.] Univ Sassari, I-07100 Sassari, Italy.
[De Nardo, G.; Lista, L.; Monorchio, D.; Onorato, G.; Sciacca, C.] Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy.
[Angelini, C.; Batignani, G.; Bettarini, S.; Calderini, G.; Carpinelli, M.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Lusiani, A.; Morganti, M.; Neri, N.; Paoloni, E.; Rizzo, G.; Walsh, J. J.] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy.
[Angelini, C.; Batignani, G.; Bettarini, S.; Calderini, G.; Carpinelli, M.; Cervelli, A.; Giorgi, M. A.; Neri, N.; Paoloni, E.; Rizzo, G.] Univ Pisa, Dipartimento Fis, I-56127 Pisa, Italy.
RP Aubert, B (reprint author), Univ Savoie, CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules LAPP, F-74941 Annecy Le Vieux, France.
RI Martinez Vidal, F*/L-7563-2014; Kolomensky, Yury/I-3510-2015; Lo Vetere,
Maurizio/J-5049-2012; Lusiani, Alberto/N-2976-2015; Morandin,
Mauro/A-3308-2016; Lusiani, Alberto/A-3329-2016; Stracka,
Simone/M-3931-2015; Della Ricca, Giuseppe/B-6826-2013; Di Lodovico,
Francesca/L-9109-2016; Pappagallo, Marco/R-3305-2016; Calcaterra,
Alessandro/P-5260-2015; Frey, Raymond/E-2830-2016; Patrignani,
Claudia/C-5223-2009; Monge, Maria Roberta/G-9127-2012; Oyanguren,
Arantza/K-6454-2014; Luppi, Eleonora/A-4902-2015; White,
Ryan/E-2979-2015; Calabrese, Roberto/G-4405-2015; Neri,
Nicola/G-3991-2012; Forti, Francesco/H-3035-2011; Rotondo,
Marcello/I-6043-2012; de Sangro, Riccardo/J-2901-2012; Saeed, Mohammad
Alam/J-7455-2012; Negrini, Matteo/C-8906-2014;
OI Martinez Vidal, F*/0000-0001-6841-6035; Kolomensky,
Yury/0000-0001-8496-9975; Lo Vetere, Maurizio/0000-0002-6520-4480;
Lusiani, Alberto/0000-0002-6876-3288; Morandin,
Mauro/0000-0003-4708-4240; Lusiani, Alberto/0000-0002-6876-3288;
Stracka, Simone/0000-0003-0013-4714; Della Ricca,
Giuseppe/0000-0003-2831-6982; Di Lodovico,
Francesca/0000-0003-3952-2175; Pappagallo, Marco/0000-0001-7601-5602;
Calcaterra, Alessandro/0000-0003-2670-4826; Frey,
Raymond/0000-0003-0341-2636; Patrignani, Claudia/0000-0002-5882-1747;
Monge, Maria Roberta/0000-0003-1633-3195; Oyanguren,
Arantza/0000-0002-8240-7300; Luppi, Eleonora/0000-0002-1072-5633; White,
Ryan/0000-0003-3589-5900; Calabrese, Roberto/0000-0002-1354-5400; Neri,
Nicola/0000-0002-6106-3756; Forti, Francesco/0000-0001-6535-7965;
Rotondo, Marcello/0000-0001-5704-6163; de Sangro,
Riccardo/0000-0002-3808-5455; Saeed, Mohammad Alam/0000-0002-3529-9255;
Negrini, Matteo/0000-0003-0101-6963; Raven, Gerhard/0000-0002-2897-5323
FU DOE and NSF (USA); NSERC (Canada); CEA and CNRS-IN2P3 (France); BMBF and
DFG (Germany); INFN (Italy); FOM (The Netherlands); NFR (Norway); MES
(Russia); MEC (Spain); STFC (United Kingdom); Marie Curie EIF (European
Union); A. P. Sloan Foundation
FX We are grateful for the excellent luminosity and machine conditions
provided by our PEP-II colleagues, and for the substantial dedicated
effort from the computing organizations that support BABAR. The
collaborating institutions wish to thank SLAC for its support and kind
hospitality. This work is supported by DOE and NSF (USA), NSERC
(Canada), CEA and CNRS-IN2P3 (France), BMBF and DFG (Germany), INFN
(Italy), FOM (The Netherlands), NFR (Norway), MES (Russia), MEC (Spain),
and STFC (United Kingdom). Individuals have received support from the
Marie Curie EIF (European Union) and the A. P. Sloan Foundation.
NR 7
TC 3
Z9 3
U1 1
U2 7
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 5
AR 051105
DI 10.1103/PhysRevD.80.051105
PG 7
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501MB
UT WOS:000270384900005
ER
PT J
AU Aubert, B
Karyotakis, Y
Lees, JP
Poireau, V
Prencipe, E
Prudent, X
Tisserand, V
Tico, JG
Grauges, E
Martinelli, M
Palano, A
Pappagallo, M
Eigen, G
Stugu, B
Sun, L
Battaglia, M
Brown, DN
Hooberman, B
Kerth, LT
Kolomensky, YG
Lynch, G
Osipenkov, IL
Tackmann, K
Tanabe, T
Hawkes, CM
Soni, N
Watson, AT
Koch, H
Schroeder, T
Asgeirsson, DJ
Hearty, C
Mattison, TS
McKenna, JA
Barrett, M
Khan, A
Randle-Conde, A
Blinov, VE
Bukin, AD
Buzykaev, AR
Druzhinin, VP
Golubev, VB
Onuchin, AP
Serednyakov, SI
Skovpen, YI
Solodov, EP
Todyshev, KY
Bondioli, M
Curry, S
Eschrich, I
Kirkby, D
Lankford, AJ
Lund, P
Mandelkern, M
Martin, EC
Stoker, DP
Atmacan, H
Gary, JW
Liu, F
Long, O
Vitug, GM
Yasin, Z
Sharma, V
Campagnari, C
Hong, TM
Kovalskyi, D
Mazur, MA
Richman, JD
Beck, TW
Eisner, AM
Heusch, CA
Kroseberg, J
Lockman, WS
Martinez, AJ
Schalk, T
Schumm, BA
Seiden, A
Wang, L
Winstrom, LO
Cheng, CH
Doll, DA
Echenard, B
Fang, F
Hitlin, DG
Narsky, I
Ongmongkolkul, P
Piatenko, T
Porter, FC
Andreassen, R
Mancinelli, G
Meadows, BT
Mishra, K
Sokoloff, MD
Bloom, PC
Chavez, A
Ford, WT
Gaz, A
Hirschauer, JF
Nagel, M
Nauenberg, U
Smith, JG
Wagner, SR
Ayad, R
Toki, WH
Wilson, RJ
Feltresi, E
Hauke, A
Jasper, H
Karbach, TM
Merkel, J
Petzold, A
Spaan, B
Wacker, K
Kobel, MJ
Nogowski, R
Schubert, KR
Schwierz, R
Bernard, D
Latour, E
Verderi, M
Clark, PJ
Playfer, S
Watson, JE
Andreotti, M
Bettoni, D
Bozzi, C
Calabrese, R
Cecchi, A
Cibinetto, G
Fioravanti, E
Franchini, P
Luppi, E
Munerato, M
Negrini, M
Petrella, A
Piemontese, L
Santoro, V
Baldini-Ferroli, R
Calcaterra, A
de Sangro, R
Finocchiaro, G
Pacetti, S
Patteri, P
Peruzzi, IM
Piccolo, M
Rama, M
Zallo, A
Contri, R
Guido, E
Lo Vetere, M
Monge, MR
Passaggio, S
Patrignani, C
Robutti, E
Tosi, S
Chaisanguanthum, KS
Morii, M
Adametz, A
Marks, J
Schenk, S
Uwer, U
Bernlochner, FU
Klose, V
Lacker, HM
Lueck, T
Volk, A
Bard, DJ
Dauncey, PD
Tibbetts, M
Behera, PK
Charles, MJ
Mallik, U
Cochran, J
Crawley, HB
Dong, L
Eyges, V
Meyer, WT
Prell, S
Rosenberg, EI
Rubin, AE
Gao, YY
Gritsan, AV
Guo, ZJ
Arnaud, N
Bequilleux, J
D'Orazio, A
Davier, M
Derkach, D
da Costa, JF
Grosdidier, G
Le Diberder, F
Lepeltier, V
Lutz, AM
Malaescu, B
Pruvot, S
Roudeau, P
Schune, MH
Serrano, J
Sordini, V
Stocchi, A
Wormser, G
Lange, DJ
Wright, DM
Bingham, I
Burke, JP
Chavez, CA
Fry, JR
Gabathuler, E
Gamet, R
Hutchcroft, DE
Payne, DJ
Touramanis, C
Bevan, AJ
Clarke, CK
Di Lodovico, F
Sacco, R
Sigamani, M
Cowan, G
Paramesvaran, S
Wren, AC
Brown, DN
Davis, CL
Denig, AG
Fritsch, M
Gradl, W
Hafner, A
Alwyn, KE
Bailey, D
Barlow, RJ
Jackson, G
Lafferty, GD
West, TJ
Yi, JI
Anderson, J
Chen, C
Jawahery, A
Roberts, DA
Simi, G
Tuggle, JM
Dallapiccola, C
Salvati, E
Cowan, R
Dujmic, D
Fisher, PH
Henderson, SW
Sciolla, G
Spitznagel, M
Yamamoto, RK
Zhao, M
Patel, PM
Robertson, SH
Schram, M
Biassoni, P
Lazzaro, A
Lombardo, V
Palombo, F
Stracka, S
Cremaldi, L
Godang, R
Kroeger, R
Sonnek, P
Summers, DJ
Zhao, HW
Simard, M
Taras, P
Nicholson, H
De Nardo, G
Lista, L
Monorchio, D
Onorato, G
Sciacca, C
Raven, G
Snoek, HL
Jessop, CP
Knoepfel, KJ
LoSecco, JM
Wang, WF
Corwin, LA
Honscheid, K
Kagan, H
Kass, R
Morris, JP
Rahimi, AM
Sekula, SJ
Wong, QK
Blount, NL
Brau, J
Frey, R
Igonkina, O
Kolb, JA
Lu, M
Rahmat, R
Sinev, NB
Strom, D
Strube, J
Torrence, E
Castelli, G
Gagliardi, N
Margoni, M
Morandin, M
Posocco, M
Rotondo, M
Simonetto, F
Stroili, R
Voci, C
Sanchez, PD
Ben-Haim, E
Bonneaud, GR
Briand, H
Chauveau, J
Hamon, O
Leruste, P
Marchiori, G
Ocariz, J
Perez, A
Prendki, J
Sitt, S
Gladney, L
Biasini, M
Manoni, E
Angelini, C
Batignani, G
Bettarini, S
Calderini, G
Carpinelli, M
Cervelli, A
Forti, F
Giorgi, MA
Lusiani, A
Morganti, M
Neri, N
Paoloni, E
Rizzo, G
Walsh, JJ
Pegna, DL
Lu, C
Olsen, J
Smith, AJS
Telnov, AV
Anulli, F
Baracchini, E
Cavoto, G
Faccini, R
Ferrarotto, F
Ferroni, F
Gaspero, M
Jackson, PD
Gioi, LL
Mazzoni, MA
Morganti, S
Piredda, G
Renga, F
Voena, C
Ebert, M
Hartmann, T
Schroder, H
Waldi, R
Adye, T
Franek, B
Olaiya, EO
Wilson, FF
Emery, S
Esteve, L
de Monchenault, GH
Kozanecki, W
Vasseur, G
Yeche, C
Zito, M
Allen, MT
Aston, D
Bartoldus, R
Benitez, JF
Cenci, R
Coleman, JP
Convery, MR
Dingfelder, JC
Dorfan, J
Dubois-Felsmann, GP
Dunwoodie, W
Field, RC
Sevilla, MF
Fulsom, BG
Gabareen, AM
Graham, MT
Grenier, P
Hast, C
Innes, WR
Kaminski, J
Kelsey, MH
Kim, H
Kim, P
Kocian, ML
Leith, DWGS
Li, S
Lindquist, B
Luitz, S
Luth, V
Lynch, HL
MacFarlane, DB
Marsiske, H
Messner, R
Muller, DR
Neal, H
Nelson, S
O'Grady, CP
Ofte, I
Perl, M
Ratcliff, BN
Roodman, A
Salnikov, AA
Schindler, RH
Schwiening, J
Snyder, A
Su, D
Sullivan, MK
Suzuki, K
Swain, SK
Thompson, JM
Va'vra, J
Wagner, AP
Weaver, M
West, CA
Wisniewski, WJ
Wittgen, M
Wright, DH
Wulsin, HW
Yarritu, AK
Young, CC
Ziegler, V
Chen, XR
Liu, H
Park, W
Purohit, MV
White, RM
Wilson, JR
Bellis, M
Burchat, PR
Edwards, AJ
Miyashita, TS
Ahmed, S
Alam, MS
Ernst, JA
Pan, B
Saeed, MA
Zain, SB
Soffer, A
Spanier, SM
Wogsland, BJ
Eckmann, R
Ritchie, JL
Ruland, AM
Schilling, CJ
Schwitters, RF
Wray, BC
Drummond, BW
Izen, JM
Lou, XC
Bianchi, F
Gamba, D
Pelliccioni, M
Bomben, M
Bosisio, L
Cartaro, C
Della Ricca, G
Lanceri, L
Vitale, L
Azzolini, V
Lopez-March, N
Martinez-Vidal, F
Milanes, DA
Oyanguren, A
Albert, J
Banerjee, S
Bhuyan, B
Choi, HHF
Hamano, K
King, GJ
Kowalewski, R
Lewczuk, MJ
Nugent, IM
Roney, JM
Sobie, RJ
Gershon, TJ
Harrison, PF
Ilic, J
Latham, TE
Mohanty, GB
Puccio, EMT
Band, HR
Chen, X
Dasu, S
Flood, KT
Pan, Y
Prepost, R
Vuosalo, CO
Wu, SL
AF Aubert, B.
Karyotakis, Y.
Lees, J. P.
Poireau, V.
Prencipe, E.
Prudent, X.
Tisserand, V.
Garra Tico, J.
Grauges, E.
Martinelli, M.
Palano, A.
Pappagallo, M.
Eigen, G.
Stugu, B.
Sun, L.
Battaglia, M.
Brown, D. N.
Hooberman, B.
Kerth, L. T.
Kolomensky, Yu. G.
Lynch, G.
Osipenkov, I. L.
Tackmann, K.
Tanabe, T.
Hawkes, C. M.
Soni, N.
Watson, A. T.
Koch, H.
Schroeder, T.
Asgeirsson, D. J.
Hearty, C.
Mattison, T. S.
McKenna, J. A.
Barrett, M.
Khan, A.
Randle-Conde, A.
Blinov, V. E.
Bukin, A. D.
Buzykaev, A. R.
Druzhinin, V. P.
Golubev, V. B.
Onuchin, A. P.
Serednyakov, S. I.
Skovpen, Yu. I.
Solodov, E. P.
Todyshev, K. Yu.
Bondioli, M.
Curry, S.
Eschrich, I.
Kirkby, D.
Lankford, A. J.
Lund, P.
Mandelkern, M.
Martin, E. C.
Stoker, D. P.
Atmacan, H.
Gary, J. W.
Liu, F.
Long, O.
Vitug, G. M.
Yasin, Z.
Sharma, V.
Campagnari, C.
Hong, T. M.
Kovalskyi, D.
Mazur, M. A.
Richman, J. D.
Beck, T. W.
Eisner, A. M.
Heusch, C. A.
Kroseberg, J.
Lockman, W. S.
Martinez, A. J.
Schalk, T.
Schumm, B. A.
Seiden, A.
Wang, L.
Winstrom, L. O.
Cheng, C. H.
Doll, D. A.
Echenard, B.
Fang, F.
Hitlin, D. G.
Narsky, I.
Ongmongkolkul, P.
Piatenko, T.
Porter, F. C.
Andreassen, R.
Mancinelli, G.
Meadows, B. T.
Mishra, K.
Sokoloff, M. D.
Bloom, P. C.
Chavez, A.
Ford, W. T.
Gaz, A.
Hirschauer, J. F.
Nagel, M.
Nauenberg, U.
Smith, J. G.
Wagner, S. R.
Ayad, R.
Toki, W. H.
Wilson, R. J.
Feltresi, E.
Hauke, A.
Jasper, H.
Karbach, T. M.
Merkel, J.
Petzold, A.
Spaan, B.
Wacker, K.
Kobel, M. J.
Nogowski, R.
Schubert, K. R.
Schwierz, R.
Bernard, D.
Latour, E.
Verderi, M.
Clark, P. J.
Playfer, S.
Watson, J. E.
Andreotti, M.
Bettoni, D.
Bozzi, C.
Calabrese, R.
Cecchi, A.
Cibinetto, G.
Fioravanti, E.
Franchini, P.
Luppi, E.
Munerato, M.
Negrini, M.
Petrella, A.
Piemontese, L.
Santoro, V.
Baldini-Ferroli, R.
Calcaterra, A.
de Sangro, R.
Finocchiaro, G.
Pacetti, S.
Patteri, P.
Peruzzi, I. M.
Piccolo, M.
Rama, M.
Zallo, A.
Contri, R.
Guido, E.
Lo Vetere, M.
Monge, M. R.
Passaggio, S.
Patrignani, C.
Robutti, E.
Tosi, S.
Chaisanguanthum, K. S.
Morii, M.
Adametz, A.
Marks, J.
Schenk, S.
Uwer, U.
Bernlochner, F. U.
Klose, V.
Lacker, H. M.
Lueck, T.
Volk, A.
Bard, D. J.
Dauncey, P. D.
Tibbetts, M.
Behera, P. K.
Charles, M. J.
Mallik, U.
Cochran, J.
Crawley, H. B.
Dong, L.
Eyges, V.
Meyer, W. T.
Prell, S.
Rosenberg, E. I.
Rubin, A. E.
Gao, Y. Y.
Gritsan, A. V.
Guo, Z. J.
Arnaud, N.
Bequilleux, J.
D'Orazio, A.
Davier, M.
Derkach, D.
da Costa, J. Firmino
Grosdidier, G.
Le Diberder, F.
Lepeltier, V.
Lutz, A. M.
Malaescu, B.
Pruvot, S.
Roudeau, P.
Schune, M. H.
Serrano, J.
Sordini, V.
Stocchi, A.
Wormser, G.
Lange, D. J.
Wright, D. M.
Bingham, I.
Burke, J. P.
Chavez, C. A.
Fry, J. R.
Gabathuler, E.
Gamet, R.
Hutchcroft, D. E.
Payne, D. J.
Touramanis, C.
Bevan, A. J.
Clarke, C. K.
Di Lodovico, F.
Sacco, R.
Sigamani, M.
Cowan, G.
Paramesvaran, S.
Wren, A. C.
Brown, D. N.
Davis, C. L.
Denig, A. G.
Fritsch, M.
Gradl, W.
Hafner, A.
Alwyn, K. E.
Bailey, D.
Barlow, R. J.
Jackson, G.
Lafferty, G. D.
West, T. J.
Yi, J. I.
Anderson, J.
Chen, C.
Jawahery, A.
Roberts, D. A.
Simi, G.
Tuggle, J. M.
Dallapiccola, C.
Salvati, E.
Cowan, R.
Dujmic, D.
Fisher, P. H.
Henderson, S. W.
Sciolla, G.
Spitznagel, M.
Yamamoto, R. K.
Zhao, M.
Patel, P. M.
Robertson, S. H.
Schram, M.
Biassoni, P.
Lazzaro, A.
Lombardo, V.
Palombo, F.
Stracka, S.
Cremaldi, L.
Godang, R.
Kroeger, R.
Sonnek, P.
Summers, D. J.
Zhao, H. W.
Simard, M.
Taras, P.
Nicholson, H.
De Nardo, G.
Lista, L.
Monorchio, D.
Onorato, G.
Sciacca, C.
Raven, G.
Snoek, H. L.
Jessop, C. P.
Knoepfel, K. J.
LoSecco, J. M.
Wang, W. F.
Corwin, L. A.
Honscheid, K.
Kagan, H.
Kass, R.
Morris, J. P.
Rahimi, A. M.
Sekula, S. J.
Wong, Q. K.
Blount, N. L.
Brau, J.
Frey, R.
Igonkina, O.
Kolb, J. A.
Lu, M.
Rahmat, R.
Sinev, N. B.
Strom, D.
Strube, J.
Torrence, E.
Castelli, G.
Gagliardi, N.
Margoni, M.
Morandin, M.
Posocco, M.
Rotondo, M.
Simonetto, F.
Stroili, R.
Voci, C.
Sanchez, P. del Amo
Ben-Haim, E.
Bonneaud, G. R.
Briand, H.
Chauveau, J.
Hamon, O.
Leruste, Ph.
Marchiori, G.
Ocariz, J.
Perez, A.
Prendki, J.
Sitt, S.
Gladney, L.
Biasini, M.
Manoni, E.
Angelini, C.
Batignani, G.
Bettarini, S.
Calderini, G.
Carpinelli, M.
Cervelli, A.
Forti, F.
Giorgi, M. A.
Lusiani, A.
Morganti, M.
Neri, N.
Paoloni, E.
Rizzo, G.
Walsh, J. J.
Pegna, D. Lopes
Lu, C.
Olsen, J.
Smith, A. J. S.
Telnov, A. V.
Anulli, F.
Baracchini, E.
Cavoto, G.
Faccini, R.
Ferrarotto, F.
Ferroni, F.
Gaspero, M.
Jackson, P. D.
Gioi, L. Li
Mazzoni, M. A.
Morganti, S.
Piredda, G.
Renga, F.
Voena, C.
Ebert, M.
Hartmann, T.
Schroeder, H.
Waldi, R.
Adye, T.
Franek, B.
Olaiya, E. O.
Wilson, F. F.
Emery, S.
Esteve, L.
de Monchenault, G. Hamel
Kozanecki, W.
Vasseur, G.
Yeche, Ch.
Zito, M.
Allen, M. T.
Aston, D.
Bartoldus, R.
Benitez, J. F.
Cenci, R.
Coleman, J. P.
Convery, M. R.
Dingfelder, J. C.
Dorfan, J.
Dubois-Felsmann, G. P.
Dunwoodie, W.
Field, R. C.
Sevilla, M. Franco
Fulsom, B. G.
Gabareen, A. M.
Graham, M. T.
Grenier, P.
Hast, C.
Innes, W. R.
Kaminski, J.
Kelsey, M. H.
Kim, H.
Kim, P.
Kocian, M. L.
Leith, D. W. G. S.
Li, S.
Lindquist, B.
Luitz, S.
Luth, V.
Lynch, H. L.
MacFarlane, D. B.
Marsiske, H.
Messner, R.
Muller, D. R.
Neal, H.
Nelson, S.
O'Grady, C. P.
Ofte, I.
Perl, M.
Ratcliff, B. N.
Roodman, A.
Salnikov, A. A.
Schindler, R. H.
Schwiening, J.
Snyder, A.
Su, D.
Sullivan, M. K.
Suzuki, K.
Swain, S. K.
Thompson, J. M.
Va'vra, J.
Wagner, A. P.
Weaver, M.
West, C. A.
Wisniewski, W. J.
Wittgen, M.
Wright, D. H.
Wulsin, H. W.
Yarritu, A. K.
Young, C. C.
Ziegler, V.
Chen, X. R.
Liu, H.
Park, W.
Purohit, M. V.
White, R. M.
Wilson, J. R.
Bellis, M.
Burchat, P. R.
Edwards, A. J.
Miyashita, T. S.
Ahmed, S.
Alam, M. S.
Ernst, J. A.
Pan, B.
Saeed, M. A.
Zain, S. B.
Soffer, A.
Spanier, S. M.
Wogsland, B. J.
Eckmann, R.
Ritchie, J. L.
Ruland, A. M.
Schilling, C. J.
Schwitters, R. F.
Wray, B. C.
Drummond, B. W.
Izen, J. M.
Lou, X. C.
Bianchi, F.
Gamba, D.
Pelliccioni, M.
Bomben, M.
Bosisio, L.
Cartaro, C.
Della Ricca, G.
Lanceri, L.
Vitale, L.
Azzolini, V.
Lopez-March, N.
Martinez-Vidal, F.
Milanes, D. A.
Oyanguren, A.
Albert, J.
Banerjee, Sw.
Bhuyan, B.
Choi, H. H. F.
Hamano, K.
King, G. J.
Kowalewski, R.
Lewczuk, M. J.
Nugent, I. M.
Roney, J. M.
Sobie, R. J.
Gershon, T. J.
Harrison, P. F.
Ilic, J.
Latham, T. E.
Mohanty, G. B.
Puccio, E. M. T.
Band, H. R.
Chen, X.
Dasu, S.
Flood, K. T.
Pan, Y.
Prepost, R.
Vuosalo, C. O.
Wu, S. L.
CA BaBaR Collaboration
TI Search for B-meson decays to b(1 rho) and b(1)K
SO PHYSICAL REVIEW D
LA English
DT Article
ID GENERAL-THEORY; POLARIZATION; COLLISIONS; PARTICLES; PHYSICS; JETS; SPIN
AB present a search for decays of B mesons to final states with a b(1) meson and a rho or K*(d892) meson. The search is based on a data sample consisting of 465 million B (B) over bar pairs collected by the BABAR detector at the SLAC National Accelerator Laboratory. We do not observe any statistically significant signal. The upper limits we set on the branching fractions range from 1.4 to 8.0 x 10(-6) at the 90% confidence level, including systematic uncertainties.
C1 [Aubert, B.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prencipe, E.; Prudent, X.; Tisserand, V.] Univ Savoie, Lab Annecy le Vieux Phys Particules, CNRS, IN2P3, F-74941 Annecy Le Vieux, France.
[Garra Tico, J.; Grauges, E.] Univ Barcelona, Fac Fis, Dept Estructura & Constituents Mat, E-08028 Barcelona, Spain.
[Martinelli, M.; Palano, A.; Pappagallo, M.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy.
[Martinelli, M.; Palano, A.; Pappagallo, M.] Univ Bari, Dipartmento Fis, I-70126 Bari, Italy.
[Eigen, G.; Stugu, B.; Sun, L.] Univ Bergen, Inst Phys, N-5007 Bergen, Norway.
[Battaglia, M.; Brown, D. N.; Hooberman, B.; Kerth, L. T.; Kolomensky, Yu. G.; Lynch, G.; Osipenkov, I. L.; Tackmann, K.; Tanabe, T.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Hawkes, C. M.; Soni, N.; Watson, A. T.] Univ Birmingham, Birmingham B15 2TT, W Midlands, England.
[Koch, H.; Schroeder, T.] Ruhr Univ Bochum, Inst Expt Phys, D-44780 Bochum, Germany.
[Asgeirsson, D. J.; Hearty, C.; Mattison, T. S.; McKenna, J. A.] Univ British Columbia, Vancouver, BC V6T 1Z1, Canada.
[Barrett, M.; Khan, A.; Randle-Conde, A.] Brunel Univ, Uxbridge UB8 3PH, Middx, England.
[Blinov, V. E.; Bukin, A. D.; Buzykaev, A. R.; Druzhinin, V. P.; Golubev, V. B.; Onuchin, A. P.; Serednyakov, S. I.; Skovpen, Yu. I.; Solodov, E. P.; Todyshev, K. Yu.] Budker Inst Nucl Phys, Novosibirsk 630090, Russia.
[Bondioli, M.; Curry, S.; Eschrich, I.; Kirkby, D.; Lankford, A. J.; Lund, P.; Mandelkern, M.; Martin, E. C.; Stoker, D. P.] Univ Calif Irvine, Irvine, CA 92697 USA.
[Atmacan, H.; Gary, J. W.; Liu, F.; Long, O.; Vitug, G. M.; Yasin, Z.] Univ Calif Riverside, Riverside, CA 92521 USA.
[Sharma, V.] Univ Calif San Diego, La Jolla, CA 92093 USA.
[Campagnari, C.; Hong, T. M.; Kovalskyi, D.; Mazur, M. A.; Richman, J. D.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
[Beck, T. W.; Eisner, A. M.; Heusch, C. A.; Kroseberg, J.; Lockman, W. S.; Martinez, A. J.; Schalk, T.; Schumm, B. A.; Seiden, A.; Wang, L.; Winstrom, L. O.] Univ Calif Santa Cruz, Inst Particle Phys, Santa Cruz, CA 95064 USA.
[Cheng, C. H.; Doll, D. A.; Echenard, B.; Fang, F.; Hitlin, D. G.; Narsky, I.; Ongmongkolkul, P.; Piatenko, T.; Porter, F. C.] CALTECH, Pasadena, CA 91125 USA.
[Andreassen, R.; Mancinelli, G.; Meadows, B. T.; Mishra, K.; Sokoloff, M. D.] Univ Cincinnati, Cincinnati, OH 45221 USA.
[Bloom, P. C.; Chavez, A.; Ford, W. T.; Gaz, A.; Hirschauer, J. F.; Nagel, M.; Nauenberg, U.; Smith, J. G.; Wagner, S. R.] Univ Colorado, Boulder, CO 80309 USA.
[Ayad, R.; Toki, W. H.; Wilson, R. J.] Colorado State Univ, Ft Collins, CO 80523 USA.
[Feltresi, E.; Hauke, A.; Jasper, H.; Karbach, T. M.; Merkel, J.; Petzold, A.; Spaan, B.; Wacker, K.] Tech Univ Dortmund, Fac Phys, D-44221 Dortmund, Germany.
[Kobel, M. J.; Nogowski, R.; Schubert, K. R.; Schwierz, R.] Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany.
[Bernard, D.; Latour, E.; Verderi, M.] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France.
[Clark, P. J.; Playfer, S.; Watson, J. E.] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland.
[Andreotti, M.; Bettoni, D.; Bozzi, C.; Calabrese, R.; Cecchi, A.; Cibinetto, G.; Fioravanti, E.; Franchini, P.; Luppi, E.; Munerato, M.; Negrini, M.; Petrella, A.; Piemontese, L.; Santoro, V.] Ist Nazl Fis Nucl, Sez Ferrara, I-44100 Ferrara, Italy.
[Andreotti, M.; Calabrese, R.; Cecchi, A.; Cibinetto, G.; Fioravanti, E.; Franchini, P.; Luppi, E.; Munerato, M.; Negrini, M.; Petrella, A.; Santoro, V.] Univ Ferrara, Dipartmento Fis, I-44100 Ferrara, Italy.
[Baldini-Ferroli, R.; Calcaterra, A.; de Sangro, R.; Finocchiaro, G.; Pacetti, S.; Patteri, P.; Peruzzi, I. M.; Piccolo, M.; Rama, M.; Zallo, A.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
[Contri, R.; Guido, E.; Lo Vetere, M.; Monge, M. R.; Passaggio, S.; Patrignani, C.; Robutti, E.; Tosi, S.] Ist Nazl Fis Nucl, Sez Gonova, I-16146 Genoa, Italy.
[Chaisanguanthum, K. S.; Morii, M.] Harvard Univ, Cambridge, MA 02138 USA.
[Adametz, A.; Marks, J.; Schenk, S.; Uwer, U.] Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany.
[Bernlochner, F. U.; Klose, V.; Lacker, H. M.; Lueck, T.; Volk, A.] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany.
[Bard, D. J.; Dauncey, P. D.; Tibbetts, M.] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England.
[Behera, P. K.; Charles, M. J.; Mallik, U.] Univ Iowa, Iowa City, IA 52242 USA.
[Cochran, J.; Crawley, H. B.; Dong, L.; Eyges, V.; Meyer, W. T.; Prell, S.; Rosenberg, E. I.; Rubin, A. E.] Iowa State Univ, Ames, IA 50011 USA.
[Gao, Y. Y.; Gritsan, A. V.; Guo, Z. J.] Johns Hopkins Univ, Baltimore, MD 21218 USA.
[Arnaud, N.; Bequilleux, J.; D'Orazio, A.; Davier, M.; Derkach, D.; da Costa, J. Firmino; Grosdidier, G.; Le Diberder, F.; Lepeltier, V.; Lutz, A. M.; Malaescu, B.; Pruvot, S.; Roudeau, P.; Schune, M. H.; Serrano, J.; Sordini, V.; Stocchi, A.; Wormser, G.] CNRS, IN2P3, Lab Accelerateur Lineaire, F-91898 Orsay, France.
[Arnaud, N.; Bequilleux, J.; D'Orazio, A.; Davier, M.; Derkach, D.; da Costa, J. Firmino; Grosdidier, G.; Le Diberder, F.; Lepeltier, V.; Lutz, A. M.; Malaescu, B.; Pruvot, S.; Roudeau, P.; Schune, M. H.; Serrano, J.; Sordini, V.; Stocchi, A.; Wormser, G.] Univ Paris 11, Ctr Sci Orsay, F-91898 Orsay, France.
[Lange, D. J.; Wright, D. M.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Bingham, I.; Burke, J. P.; Chavez, C. A.; Fry, J. R.; Gabathuler, E.; Gamet, R.; Hutchcroft, D. E.; Payne, D. J.; Touramanis, C.] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England.
[Bevan, A. J.; Clarke, C. K.; Di Lodovico, F.; Sacco, R.; Sigamani, M.] Univ London, London E1 4NS, England.
[Cowan, G.; Paramesvaran, S.; Wren, A. C.] Univ London, Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England.
[Brown, D. N.; Davis, C. L.] Univ Louisville, Louisville, KY 40292 USA.
[Denig, A. G.; Fritsch, M.; Gradl, W.; Hafner, A.] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany.
[Alwyn, K. E.; Bailey, D.; Barlow, R. J.; Jackson, G.; Lafferty, G. D.; West, T. J.; Yi, J. I.] Univ Manchester, Manchester M13 9PL, Lancs, England.
[Anderson, J.; Chen, C.; Jawahery, A.; Roberts, D. A.; Simi, G.; Tuggle, J. M.] Univ Maryland, College Pk, MD 20742 USA.
[Dallapiccola, C.; Salvati, E.] Univ Massachusetts, Amherst, MA 01003 USA.
[Cowan, R.; Dujmic, D.; Fisher, P. H.; Henderson, S. W.; Sciolla, G.; Spitznagel, M.; Yamamoto, R. K.; Zhao, M.] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA.
[Biassoni, P.; Lazzaro, A.; Lombardo, V.; Palombo, F.; Stracka, S.] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy.
[Biassoni, P.; Lazzaro, A.; Palombo, F.; Stracka, S.] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.
[Cremaldi, L.; Godang, R.; Kroeger, R.; Sonnek, P.; Summers, D. J.; Zhao, H. W.] Univ Mississippi, University, MS 38677 USA.
[Simard, M.; Taras, P.] Univ Montreal, Montreal, PQ H3C 3J7, Canada.
[Nicholson, H.] Mt Holyoke Coll, S Hadley, MA 01075 USA.
[De Nardo, G.; Lista, L.; Monorchio, D.; Onorato, G.; Sciacca, C.] Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy.
[De Nardo, G.; Monorchio, D.; Onorato, G.; Sciacca, C.] Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy.
[Raven, G.; Snoek, H. L.] Natl Inst Nucl & High Energy Phys, NIKHEF, NL-1009 DB Amsterdam, Netherlands.
[Jessop, C. P.; Knoepfel, K. J.; LoSecco, J. M.; Wang, W. F.] Univ Notre Dame, Notre Dame, IN 46556 USA.
[Corwin, L. A.; Honscheid, K.; Kagan, H.; Kass, R.; Morris, J. P.; Rahimi, A. M.; Sekula, S. J.; Wong, Q. K.] Ohio State Univ, Columbus, OH 43210 USA.
[Blount, N. L.; Brau, J.; Frey, R.; Igonkina, O.; Kolb, J. A.; Lu, M.; Rahmat, R.; Sinev, N. B.; Strom, D.; Strube, J.; Torrence, E.] Univ Oregon, Eugene, OR 97403 USA.
[Castelli, G.; Gagliardi, N.; Margoni, M.; Morandin, M.; Posocco, M.; Rotondo, M.; Simonetto, F.; Stroili, R.; Voci, C.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.
[Castelli, G.; Gagliardi, N.; Margoni, M.; Simonetto, F.; Stroili, R.; Voci, C.] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy.
[Sanchez, P. del Amo; Ben-Haim, E.; Bonneaud, G. R.; Briand, H.; Chauveau, J.; Hamon, O.; Leruste, Ph.; Marchiori, G.; Ocariz, J.; Perez, A.; Prendki, J.; Sitt, S.; Calderini, G.] Univ Paris 07, Univ Paris 06, CNRS, IN2P3,Lab Phys Nucl & Hautes Energies, F-75252 Paris, France.
[Gladney, L.] Univ Penn, Philadelphia, PA 19104 USA.
[Biasini, M.; Manoni, E.] Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy.
[Peruzzi, I. M.; Biasini, M.; Manoni, E.] Univ Perugia, Dipartimento Fis, I-06100 Perugia, Italy.
[Angelini, C.; Batignani, G.; Bettarini, S.; Calderini, G.; Carpinelli, M.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Lusiani, A.; Morganti, M.; Neri, N.; Paoloni, E.; Rizzo, G.; Walsh, J. J.] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy.
[Angelini, C.; Batignani, G.; Bettarini, S.; Calderini, G.; Carpinelli, M.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Morganti, M.; Neri, N.; Paoloni, E.; Rizzo, G.] Univ Pisa, Dipartimento Fis, I-56127 Pisa, Italy.
[Lusiani, A.] Scuola Normale Super Pisa, I-56127 Pisa, Italy.
[Pegna, D. Lopes; Lu, C.; Olsen, J.; Smith, A. J. S.; Telnov, A. V.] Princeton Univ, Princeton, NJ 08544 USA.
[Anulli, F.; Baracchini, E.; Cavoto, G.; Faccini, R.; Ferrarotto, F.; Ferroni, F.; Gaspero, M.; Jackson, P. D.; Gioi, L. Li; Mazzoni, M. A.; Morganti, S.; Piredda, G.; Renga, F.; Voena, C.] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy.
[Baracchini, E.; Faccini, R.; Ferroni, F.; Gaspero, M.; Renga, F.] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy.
[Ebert, M.; Hartmann, T.; Schroeder, H.; Waldi, R.] Univ Rostock, D-18051 Rostock, Germany.
[Adye, T.; Franek, B.; Olaiya, E. O.; Wilson, F. F.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
[Emery, S.; Esteve, L.; de Monchenault, G. Hamel; Kozanecki, W.; Vasseur, G.; Yeche, Ch.; Zito, M.] CEA, SPP, Ctr Saclay, F-91191 Gif Sur Yvette, France.
[Allen, M. T.; Aston, D.; Bartoldus, R.; Benitez, J. F.; Cenci, R.; Coleman, J. P.; Convery, M. R.; Dingfelder, J. C.; Dorfan, J.; Dubois-Felsmann, G. P.; Dunwoodie, W.; Field, R. C.; Sevilla, M. Franco; Fulsom, B. G.; Gabareen, A. M.; Graham, M. T.; Grenier, P.; Hast, C.; Innes, W. R.; Kaminski, J.; Kelsey, M. H.; Kim, H.; Kim, P.; Kocian, M. L.; Leith, D. W. G. S.; Li, S.; Lindquist, B.; Luitz, S.; Luth, V.; Lynch, H. L.; MacFarlane, D. B.; Marsiske, H.; Messner, R.; Muller, D. R.; Neal, H.; Nelson, S.; O'Grady, C. P.; Ofte, I.; Perl, M.; Ratcliff, B. N.; Roodman, A.; Salnikov, A. A.; Schindler, R. H.; Schwiening, J.; Snyder, A.; Su, D.; Sullivan, M. K.; Suzuki, K.; Swain, S. K.; Thompson, J. M.; Va'vra, J.; Wagner, A. P.; Weaver, M.; West, C. A.; Wisniewski, W. J.; Wittgen, M.; Wright, D. H.; Wulsin, H. W.; Yarritu, A. K.; Young, C. C.; Ziegler, V.] Stanford Linear Accelerator Ctr, Natl Accelerator Lab, Stanford, CA 94309 USA.
[Chen, X. R.; Liu, H.; Park, W.; Purohit, M. V.; White, R. M.; Wilson, J. R.] Univ S Carolina, Columbia, SC 29208 USA.
[Bellis, M.; Burchat, P. R.; Edwards, A. J.; Miyashita, T. S.] Stanford Univ, Stanford, CA 94305 USA.
[Ahmed, S.; Alam, M. S.; Ernst, J. A.; Pan, B.; Saeed, M. A.; Zain, S. B.] SUNY Albany, Albany, NY 12222 USA.
[Soffer, A.] Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel.
[Spanier, S. M.; Wogsland, B. J.] Univ Tennessee, Knoxville, TN 37996 USA.
[Eckmann, R.; Ritchie, J. L.; Ruland, A. M.; Schilling, C. J.; Schwitters, R. F.; Wray, B. C.] Univ Texas Austin, Austin, TX 78712 USA.
[Drummond, B. W.; Izen, J. M.; Lou, X. C.] Univ Texas Dallas, Richardson, TX 75083 USA.
[Bianchi, F.; Gamba, D.; Pelliccioni, M.] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy.
[Bianchi, F.; Gamba, D.; Pelliccioni, M.] Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, Italy.
[Bomben, M.; Bosisio, L.; Cartaro, C.; Della Ricca, G.; Lanceri, L.; Vitale, L.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy.
[Bomben, M.; Bosisio, L.; Cartaro, C.; Della Ricca, G.; Lanceri, L.; Vitale, L.] Univ Trieste, Dipartmento Fis, I-34127 Trieste, Italy.
[Azzolini, V.; Lopez-March, N.; Martinez-Vidal, F.; Milanes, D. A.; Oyanguren, A.] Univ Valencia, CSIC, IFIC, E-46071 Valencia, Spain.
[Albert, J.; Banerjee, Sw.; Bhuyan, B.; Choi, H. H. F.; Hamano, K.; King, G. J.; Kowalewski, R.; Lewczuk, M. J.; Nugent, I. M.; Roney, J. M.; Sobie, R. J.] Univ Victoria, Victoria, BC V8W 3P6, Canada.
[Gershon, T. J.; Harrison, P. F.; Latham, T. E.; Mohanty, G. B.; Puccio, E. M. T.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England.
[Pan, B.; Band, H. R.; Chen, X.; Dasu, S.; Flood, K. T.; Prepost, R.; Vuosalo, C. O.; Wu, S. L.] Univ Wisconsin, Madison, WI 53706 USA.
[Carpinelli, M.] Univ Sassari, I-07100 Sassari, Italy.
[Contri, R.; Guido, E.; Lo Vetere, M.; Monge, M. R.; Patrignani, C.; Tosi, S.] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy.
[Patel, P. M.; Robertson, S. H.; Schram, M.] McGill Univ, Montreal, PQ H3A 2T8, Canada.
RP Aubert, B (reprint author), Univ Savoie, Lab Annecy le Vieux Phys Particules, CNRS, IN2P3, F-74941 Annecy Le Vieux, France.
RI Della Ricca, Giuseppe/B-6826-2013; Negrini, Matteo/C-8906-2014;
Patrignani, Claudia/C-5223-2009; Monge, Maria Roberta/G-9127-2012;
Oyanguren, Arantza/K-6454-2014; Luppi, Eleonora/A-4902-2015; White,
Ryan/E-2979-2015; Neri, Nicola/G-3991-2012; Forti,
Francesco/H-3035-2011; Rotondo, Marcello/I-6043-2012; de Sangro,
Riccardo/J-2901-2012; Saeed, Mohammad Alam/J-7455-2012; Calabrese,
Roberto/G-4405-2015; Martinez Vidal, F*/L-7563-2014; Kolomensky,
Yury/I-3510-2015; Lo Vetere, Maurizio/J-5049-2012; Lusiani,
Alberto/N-2976-2015; Lusiani, Alberto/A-3329-2016; Morandin,
Mauro/A-3308-2016; Stracka, Simone/M-3931-2015; Di Lodovico,
Francesca/L-9109-2016; Pappagallo, Marco/R-3305-2016; Calcaterra,
Alessandro/P-5260-2015; Frey, Raymond/E-2830-2016
OI Strube, Jan/0000-0001-7470-9301; Chen, Chunhui /0000-0003-1589-9955;
Raven, Gerhard/0000-0002-2897-5323; Bellis, Matthew/0000-0002-6353-6043;
Corwin, Luke/0000-0001-7143-3821; Lanceri, Livio/0000-0001-8220-3095;
Ebert, Marcus/0000-0002-3014-1512; Hamel de Monchenault,
Gautier/0000-0002-3872-3592; Carpinelli, Massimo/0000-0002-8205-930X;
Sciacca, Crisostomo/0000-0002-8412-4072; Adye, Tim/0000-0003-0627-5059;
Lafferty, George/0000-0003-0658-4919; Martinelli,
Maurizio/0000-0003-4792-9178; Wilson, Robert/0000-0002-8184-4103; Della
Ricca, Giuseppe/0000-0003-2831-6982; Negrini,
Matteo/0000-0003-0101-6963; Patrignani, Claudia/0000-0002-5882-1747;
Monge, Maria Roberta/0000-0003-1633-3195; Oyanguren,
Arantza/0000-0002-8240-7300; Luppi, Eleonora/0000-0002-1072-5633; White,
Ryan/0000-0003-3589-5900; Neri, Nicola/0000-0002-6106-3756; Forti,
Francesco/0000-0001-6535-7965; Rotondo, Marcello/0000-0001-5704-6163; de
Sangro, Riccardo/0000-0002-3808-5455; Saeed, Mohammad
Alam/0000-0002-3529-9255; Calabrese, Roberto/0000-0002-1354-5400;
Martinez Vidal, F*/0000-0001-6841-6035; Kolomensky,
Yury/0000-0001-8496-9975; Lo Vetere, Maurizio/0000-0002-6520-4480;
Lusiani, Alberto/0000-0002-6876-3288; Lusiani,
Alberto/0000-0002-6876-3288; Morandin, Mauro/0000-0003-4708-4240;
Stracka, Simone/0000-0003-0013-4714; Di Lodovico,
Francesca/0000-0003-3952-2175; Pappagallo, Marco/0000-0001-7601-5602;
Calcaterra, Alessandro/0000-0003-2670-4826; Frey,
Raymond/0000-0003-0341-2636
FU DOE and NSF (USA); NSERC (Canada); CEA and CNRS-IN2P3 (France); BMBF and
DFG (Germany); INFN (Italy); FOM (The Netherlands); NFR (Norway); MES
(Russia); MEC (Spain); STFC (United Kingdom); Marie Curie EIF (European
Union); A. P. Sloan Foundation
FX We are grateful for the excellent luminosity and machine conditions
provided by our PEP-II colleagues, and for the substantial dedicated
effort from the computing organizations that support BABAR. The
collaborating institutions wish to thank SLAC for its support and kind
hospitality. This work is supported by DOE and NSF (USA), NSERC
(Canada), CEA and CNRS-IN2P3 (France), BMBF and DFG (Germany), INFN
(Italy), FOM (The Netherlands), NFR (Norway), MES (Russia), MEC (Spain),
and STFC (United Kingdom). Individuals have received support from the
Marie Curie EIF (European Union) and the A. P. Sloan Foundation.
NR 41
TC 6
Z9 6
U1 0
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 5
AR 051101
DI 10.1103/PhysRevD.80.051101
PG 8
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501MB
UT WOS:000270384900001
ER
PT J
AU Bai, Y
Carena, M
Lykken, J
AF Bai, Yang
Carena, Marcela
Lykken, Joseph
TI PAMELA excess from neutralino annihilation in the NMSSM
SO PHYSICAL REVIEW D
LA English
DT Article
ID DARK-MATTER; COSMIC-RAYS; ANTIPROTONS; PROTON; MODEL; POSITRONS;
ELECTRONS; SEARCH; DECAYS; BOSONS
AB We examine whether the cosmic ray positron excess observed by PAMELA can be explained by neutralino annihilation in the next-to-minimal supersymmetric standard model (NMSSM). The main dark matter annihilation products are the lightest CP-even scalar h(1) plus the lightest CP-odd scalar a(1), with the a(1) decaying into two muons. The energetic positrons needed to explain PAMELA are thus obtained in the NMSSM simply from kinematics. The required large annihilation cross section is obtained from an s-channel resonance with the heavier CP-odd scalar a(2). Various experiments constrain the PAMELA-favored NMSSM parameter space, including collider searches for a light a(1). These constraints point to a unique corner of the NMSSM parameter space, having a lightest neutralino mass around 160 GeV and a very light pseudoscalar mass less than a GeV. A simple parametrized formula for the charge-dependent solar modulation effects reconciles the discrepancy between the PAMELA data and the estimated background at lower energies. We also discuss the electron and gamma-ray spectra from the Fermi LAT observations, and point out the discrepancy between the NMSSM predictions and Fermi LAT preliminary results and possible resolution. An NMSSM explanation of PAMELA makes three striking and uniquely correlated predictions: the rise in the PAMELA positron spectrum will turn over at around 70 GeV, the dark matter particle mass is less than the top quark mass, and a light sub-GeV pseudoscalar will be discovered at colliders.
C1 [Bai, Yang; Carena, Marcela; Lykken, Joseph] Fermilab Natl Accelerator Lab, Dept Theoret Phys, Batavia, IL 60510 USA.
[Carena, Marcela] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
RP Bai, Y (reprint author), Fermilab Natl Accelerator Lab, Dept Theoret Phys, POB 500, Batavia, IL 60510 USA.
NR 69
TC 25
Z9 25
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
EI 1550-2368
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 5
AR 055004
DI 10.1103/PhysRevD.80.055004
PG 17
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501MB
UT WOS:000270384900080
ER
PT J
AU Barger, V
Everett, L
Jiang, J
Langacker, P
Liu, T
Wagner, CEM
AF Barger, Vernon
Everett, Lisa
Jiang, Jing
Langacker, Paul
Liu, Tao
Wagner, Carlos E. M.
TI Family nonuniversal U(1)' gauge symmetries and b -> s transitions
SO PHYSICAL REVIEW D
LA English
DT Article
ID CHANGING NEUTRAL CURRENTS; Z' MODELS; PHYSICS; DECAYS; PUZZLE
AB We present a correlated analysis for the Delta B = 1, 2 processes which occur via b -> s transitions within models with a family nonuniversal U(1)'. We take a model-independent approach and only require family universal charges for the first and second generations and small fermion mixing angles. The results of our analysis show that within this class of models, the anomalies in B(s) - (B) over bar (s) mixing and the time-dependent CP asymmetries of the penguin-dominated B(d) -> (pi, phi, eta', rho, omega, f(0))K(S) decays can be accommodated.
C1 [Barger, Vernon; Everett, Lisa; Jiang, Jing] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA.
[Langacker, Paul] Inst Adv Study, Sch Nat Sci, Princeton, NJ 08540 USA.
[Liu, Tao; Wagner, Carlos E. M.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
[Wagner, Carlos E. M.] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
[Wagner, Carlos E. M.] Argonne Natl Lab, HEP Div, Argonne, IL 60439 USA.
RP Barger, V (reprint author), Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA.
FU U. S. Department of Energy (DOE) [DE-FG0290ER40560, DE-FG02-95ER40896];
Division of HEP [DE-AC02-06CH11357]; Wisconsin Alumni Research
Foundation; Fermi-McCormick Foundation; IBM Einstein Foundation; NSF
[PHY-0503584]
FX We thank Cheng-Wei Chiang and Jonathan L. Rosner for useful discussions.
Work at ANL is supported in part by the U. S. Department of Energy
(DOE), Division of HEP, Contract No. DE-AC02-06CH11357. Work at EFI is
supported in part by the DOE through Grant No. DE-FG0290ER40560. Work at
the University of Wisconsin, Madison is supported by the DOE through
Grant No. DE-FG02-95ER40896 and the Wisconsin Alumni Research
Foundation. T. L. is also supported by the Fermi-McCormick Foundation.
The work of P. L. is supported by the IBM Einstein Foundation and by NSF
Grant No. PHY-0503584.
NR 30
TC 48
Z9 49
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 5
AR 055008
DI 10.1103/PhysRevD.80.055008
PG 5
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501MB
UT WOS:000270384900084
ER
PT J
AU Belyaev, AS
Chivukula, RS
Christensen, ND
He, HJ
Kurachi, M
Simmons, EH
Tanabashi, M
AF Belyaev, Alexander S.
Chivukula, R. Sekhar
Christensen, Neil D.
He, Hong-Jian
Kurachi, Masafumi
Simmons, Elizabeth H.
Tanabashi, Masaharu
TI WLWL scattering in Higgsless models: Identifying better effective
theories
SO PHYSICAL REVIEW D
LA English
DT Article
ID STRONGLY INTERACTING WS; HIDDEN LOCAL SYMMETRY; EQUIVALENCE THEOREM;
PRECISE FORMULATION; VECTOR-MESONS; GAUGE BOSON; HIGH-ENERGY; BREAKING;
UNITARITY; SECTOR
AB The three-site model has been offered as a benchmark for studying the collider phenomenology of Higgsless models. In this paper we analyze how well the three-site model performs as a general exemplar of Higgsless models in describing WLWL scattering, and which modifications can make it more representative. We employ general sum rules relating the masses and couplings of the Kaluza-Klein modes of the gauge fields in continuum and deconstructed Higgsless models as a way to compare the different theories. We show that the size of the four-point vertex for the (unphysical) Nambu-Goldstone modes and the degree to which the sum rules are saturated by contributions from the lowest-lying Kaluza-Klein resonances both provide good measures of the extent to which a highly deconstructed theory can accurately describe the low-energy physics of a continuum 5D Higgsless model. After comparing the three-site model to flat and warped continuum models, we analyze extensions of the three-site model to a longer open linear moose with an additional U(1) group and to a ring ("breaking electroweak symmetry strongly'' or "hidden local symmetry'') model with three sites and three links. Both cases may be readily analyzed in the framework of the general sum rules. We demonstrate that WLWL scattering in the ring model can very closely approximate scattering in the continuum models, provided that the hidden local symmetry parameter a is chosen to mimic rho-meson dominance of pi pi scattering in QCD. The hadron and lepton collider phenomenology of both extended models is briefly discussed, with a focus on the complementary information to be gained from precision measurements of the Z' line shape and ZWW coupling at a high-energy lepton collider.
C1 [Belyaev, Alexander S.] Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England.
[Belyaev, Alexander S.] Rutherford Appleton Lab, Particle Phys Dept, Didcot OX11 0QX, Oxon, England.
[Chivukula, R. Sekhar; Christensen, Neil D.; Simmons, Elizabeth H.] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA.
[He, Hong-Jian] Tsinghua Univ, Ctr High Energy Phys, Beijing 100084, Peoples R China.
[Kurachi, Masafumi] Los Alamos Natl Lab, Theoret Div T2, Los Alamos, NM USA.
[Tanabashi, Masaharu] Nagoya Univ, Dept Phys, Nagoya, Aichi 4648602, Japan.
RP Belyaev, AS (reprint author), Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England.
RI Chivukula, R. Sekhar/C-3367-2012; Belyaev, Alexander/F-6637-2015
OI Chivukula, R. Sekhar/0000-0002-4142-1077; Belyaev,
Alexander/0000-0002-1733-4408
NR 95
TC 9
Z9 9
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2470-0010
EI 2470-0029
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 5
AR 055022
DI 10.1103/PhysRevD.80.055022
PG 27
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501MB
UT WOS:000270384900098
ER
PT J
AU Bennett, GW
Bousquet, B
Brown, HN
Bunce, G
Carey, RM
Cushman, P
Danby, GT
Debevec, PT
Deile, M
Deng, H
Deninger, W
Dhawan, SK
Druzhinin, VP
Duong, L
Efstathiadis, E
Farley, FJM
Fedotovich, GV
Giron, S
Gray, FE
Grigoriev, D
Grosse-Perdekamp, M
Grossmann, A
Hare, MF
Hertzog, DW
Huang, X
Hughes, VW
Iwasaki, M
Jungmann, K
Kawall, D
Kawamura, M
Khazin, BI
Kindem, J
Krienen, F
Kronkvist, I
Lam, A
Larsen, R
Lee, YY
Logashenko, I
McNabb, R
Meng, W
Mi, J
Miller, JP
Mizumachi, Y
Morse, WM
Nikas, D
Onderwater, CJG
Orlov, Y
Ozben, CS
Paley, JM
Peng, Q
Polly, CC
Pretz, J
Prigl, R
Putlitz, GZ
Qian, T
Redin, SI
Rind, O
Roberts, BL
Ryskulov, N
Sedykh, S
Semertzidis, YK
Shagin, P
Shatunov, YM
Sichtermann, EP
Solodov, E
Sossong, M
Steinmetz, A
Sulak, LR
Timmermans, C
Trofimov, A
Urner, D
von Walter, P
Warburton, D
Winn, D
Yamamoto, A
Zimmerman, D
AF Bennett, G. W.
Bousquet, B.
Brown, H. N.
Bunce, G.
Carey, R. M.
Cushman, P.
Danby, G. T.
Debevec, P. T.
Deile, M.
Deng, H.
Deninger, W.
Dhawan, S. K.
Druzhinin, V. P.
Duong, L.
Efstathiadis, E.
Farley, F. J. M.
Fedotovich, G. V.
Giron, S.
Gray, F. E.
Grigoriev, D.
Grosse-Perdekamp, M.
Grossmann, A.
Hare, M. F.
Hertzog, D. W.
Huang, X.
Hughes, V. W.
Iwasaki, M.
Jungmann, K.
Kawall, D.
Kawamura, M.
Khazin, B. I.
Kindem, J.
Krienen, F.
Kronkvist, I.
Lam, A.
Larsen, R.
Lee, Y. Y.
Logashenko, I.
McNabb, R.
Meng, W.
Mi, J.
Miller, J. P.
Mizumachi, Y.
Morse, W. M.
Nikas, D.
Onderwater, C. J. G.
Orlov, Y.
Oezben, C. S.
Paley, J. M.
Peng, Q.
Polly, C. C.
Pretz, J.
Prigl, R.
Putlitz, G. zu
Qian, T.
Redin, S. I.
Rind, O.
Roberts, B. L.
Ryskulov, N.
Sedykh, S.
Semertzidis, Y. K.
Shagin, P.
Shatunov, Yu. M.
Sichtermann, E. P.
Solodov, E.
Sossong, M.
Steinmetz, A.
Sulak, L. R.
Timmermans, C.
Trofimov, A.
Urner, D.
von Walter, P.
Warburton, D.
Winn, D.
Yamamoto, A.
Zimmerman, D.
CA Muon g-2 Collaboration
TI Improved limit on the muon electric dipole moment
SO PHYSICAL REVIEW D
LA English
DT Article
ID ANOMALOUS MAGNETIC-MOMENT; POSITIVE MUON; G-2
AB Three independent searches for an electric dipole moment (EDM) of the positive and negative muons have been performed, using spin precession data from the muon g - 2 storage ring at Brookhaven National Laboratory. Details on the experimental apparatus and the three analyses are presented. Since the individual results on the positive and negative muons, as well as the combined result, d(mu) = (0.0 +/- 0.9) x 10(-19)e cm, are all consistent with zero, we set a new muon EDM limit, vertical bar d(mu)vertical bar < 1.8 x 10(-19)e cm (95% C.L.). This represents a factor of 5 improvement over the previous best limit on the muon EDM.
C1 [Bennett, G. W.; Brown, H. N.; Bunce, G.; Danby, G. T.; Larsen, R.; Lee, Y. Y.; Meng, W.; Mi, J.; Morse, W. M.; Nikas, D.; Oezben, C. S.; Prigl, R.; Semertzidis, Y. K.; Warburton, D.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Carey, R. M.; Efstathiadis, E.; Hare, M. F.; Huang, X.; Krienen, F.; Lam, A.; Logashenko, I.; Miller, J. P.; Paley, J. M.; Peng, Q.; Rind, O.; Roberts, B. L.; Sulak, L. R.; Trofimov, A.] Boston Univ, Dept Phys, Boston, MA 02215 USA.
[Druzhinin, V. P.; Fedotovich, G. V.; Grigoriev, D.; Khazin, B. I.; Logashenko, I.; Redin, S. I.; Ryskulov, N.; Shatunov, Yu. M.; Solodov, E.] Budker Inst Nucl Phys, Novosibirsk 630090, Russia.
[Orlov, Y.] Cornell Univ, LEPP, Ithaca, NY 14853 USA.
[Winn, D.] Fairfield Univ, Fairfield, CT 06430 USA.
[Jungmann, K.; Onderwater, C. J. G.] Univ Groningen, Kernfys Versneller Inst, NL-9747 AA Groningen, Netherlands.
[Grossmann, A.; Putlitz, G. zu; von Walter, P.] Univ Heidelberg, Inst Phys, D-69120 Heidelberg, Germany.
[Debevec, P. T.; Deninger, W.; Gray, F. E.; Hertzog, D. W.; McNabb, R.; Onderwater, C. J. G.; Oezben, C. S.; Polly, C. C.; Sedykh, S.; Sossong, M.; Urner, D.] Univ Illinois, Dept Phys, Urbana, IL 61801 USA.
[Yamamoto, A.] High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki 3050801, Japan.
[Bousquet, B.; Cushman, P.; Duong, L.; Giron, S.; Kindem, J.; Kronkvist, I.; McNabb, R.; Qian, T.; Shagin, P.; Timmermans, C.; Zimmerman, D.] Univ Minnesota, Dept Phys, Minneapolis, MN 55455 USA.
[Mizumachi, Y.] Tokyo Univ Sci, Tokyo 1538902, Japan.
[Iwasaki, M.; Kawamura, M.] Tokyo Inst Technol, Meguro Ku, Tokyo 1528551, Japan.
[Deile, M.; Deng, H.; Dhawan, S. K.; Farley, F. J. M.; Grosse-Perdekamp, M.; Hughes, V. W.; Kawall, D.; Pretz, J.; Redin, S. I.; Sichtermann, E. P.; Steinmetz, A.] Yale Univ, Dept Phys, New Haven, CT 06520 USA.
RP Bennett, GW (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
RI Jungmann, Klaus/A-7142-2010; jungmann, klaus/H-1581-2013; Semertzidis,
Yannis K./N-1002-2013; Logashenko, Ivan/A-3872-2014; Iwasaki,
Masahiko/M-8433-2014;
OI jungmann, klaus/0000-0003-0571-4072; Iwasaki,
Masahiko/0000-0002-3460-9469; Gray, Frederick/0000-0003-4073-8336
FU U.S. Department of Energy; U.S. National Science Foundation; German
Bundesminister fur Bildung und Forschung; Alexander von Humboldt
Foundation; Russian Ministry of Science; U.S.-Japan Agreement in High
Energy Physics
FX We thank the BNL management, along with the staff of the BNL AGS for the
strong support they have given the muon (g - 2) experiment over a
many-year period. This work was supported in part by the U.S. Department
of Energy, the U.S. National Science Foundation, the German
Bundesminister fur Bildung und Forschung, the Alexander von Humboldt
Foundation, the Russian Ministry of Science, and the U.S.-Japan
Agreement in High Energy Physics.
NR 26
TC 96
Z9 96
U1 2
U2 8
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 5
AR 052008
DI 10.1103/PhysRevD.80.052008
PG 18
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501MB
UT WOS:000270384900019
ER
PT J
AU Bousso, R
Hall, LJ
Nomura, Y
AF Bousso, Raphael
Hall, Lawrence J.
Nomura, Yasunori
TI Multiverse understanding of cosmological coincidences
SO PHYSICAL REVIEW D
LA English
DT Article
ID GAS CLOUDS; CONSTANT; FRAGMENTATION; GALAXIES
AB There is a deep cosmological mystery: although dependent on very different underlying physics, the time scales of structure formation, of galaxy cooling (both radiatively and against the CMB), and of vacuum domination do not differ by many orders of magnitude, but are all comparable to the present age of the universe. By scanning four landscape parameters simultaneously, we show that this quadruple coincidence is resolved. We assume only that the statistical distribution of parameter values in the multiverse grows towards certain catastrophic boundaries we identify, across which there are drastic regime changes. We find order-of-magnitude predictions for the cosmological constant, the primordial density contrast, the temperature at matter-radiation equality, the typical galaxy mass, and the age of the universe, in terms of the fine structure constant and the electron, proton and Planck masses. Our approach permits a systematic evaluation of measure proposals; with the causal patch measure, we find no runaway of the primordial density contrast and the cosmological constant to large values.
C1 [Bousso, Raphael] Univ Calif Berkeley, Dept Phys, Ctr Theoret Phys, Berkeley, CA 94720 USA.
Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Bousso, R (reprint author), Univ Calif Berkeley, Dept Phys, Ctr Theoret Phys, Berkeley, CA 94720 USA.
OI Nomura, Yasunori/0000-0002-1497-1479
FU Director, Office of Science, Office of High Energy and Nuclear Physics;
US Department of Energy [DE-AC02-05CH11231]; National Science Foundation
[PHY-0457315, PHY-0555661]
FX We thank Roni Harnik, Stefan Leichenauer, and Jens Niemeyer for
discussions. This work was supported in part by the Director, Office of
Science, Office of High Energy and Nuclear Physics, of the US Department
of Energy under Contract DE-AC02-05CH11231, and in part by the National
Science Foundation under grant PHY-0457315. The work of R. B. was
supported in part by a Career grant of the National Science Foundation.
The work of Y. N. was supported in part by the National Science
Foundation under grant PHY-0555661 and by the Alfred P. Sloan
Foundation.
NR 24
TC 28
Z9 28
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 6
AR 063510
DI 10.1103/PhysRevD.80.063510
PG 19
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501ME
UT WOS:000270385200029
ER
PT J
AU Cunha, C
Huterer, D
Frieman, JA
AF Cunha, Carlos
Huterer, Dragan
Frieman, Joshua A.
TI Constraining dark energy with clusters: Complementarity with other
probes
SO PHYSICAL REVIEW D
LA English
DT Article
ID OPTICAL RICHNESS RELATION; MAXBCG GALAXY CLUSTERS; PARAMETER
CONSTRAINTS; SCATTER; NORMALIZATION; COSMOLOGY; EVOLUTION; PROJECT; SZ
AB The Figure of Merit Science Working Group recently forecast the constraints on dark energy that will be achieved prior to the Joint Dark Energy Mission by ground-based experiments that exploit baryon acoustic oscillations, type Ia supernovae, and weak gravitational lensing. We show that cluster counts from ongoing and near-future surveys should provide robust, complementary dark energy constraints. In particular, we find that optimally combined optical and Sunyaev-Zel'dovich effect cluster surveys should improve the Dark Energy Task Force figure of merit for pre-Joint Dark Energy Mission projects by a factor of 2 even without prior knowledge of the nuisance parameters in the cluster mass-observable relation. Comparable improvements are achieved in the forecast precision of parameters specifying the principal component description of the dark energy equation of state parameter, as well as in the growth index gamma. These results indicate that cluster counts can play an important complementary role in constraining dark energy and modified gravity even if the associated systematic errors are not strongly controlled.
C1 [Cunha, Carlos; Huterer, Dragan] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA.
[Frieman, Joshua A.] Fermilab Natl Accelerator Lab, Ctr Particle Astrophys, Batavia, IL 60510 USA.
[Frieman, Joshua A.] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
RP Cunha, C (reprint author), Univ Michigan, Dept Phys, 450 Church St, Ann Arbor, MI 48109 USA.
FU DOE OJI [DE-FG02-95ER40899]; NSF [AST-0807564]; NASA [NNX09AC89G]
FX C. C. and D. H. are supported by the DOE OJI grant under Contract No.
DE-FG02-95ER40899, NSF under Contract No. AST-0807564, and NASA under
Contract No. NNX09AC89G. D. H. thanks the Galileo Galilei Institute in
Firenze for hospitality, and we thank an anonymous referee, Gus Evrard,
and Eduardo Rozo for comments.
NR 42
TC 28
Z9 28
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 6
AR 063532
DI 10.1103/PhysRevD.80.063532
PG 7
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501ME
UT WOS:000270385200051
ER
PT J
AU Dalvit, DAR
Onofrio, R
AF Dalvit, Diego A. R.
Onofrio, Roberto
TI On the use of the proximity force approximation for deriving limits to
short-range gravitational-like interactions from sphere-plane Casimir
force experiments
SO PHYSICAL REVIEW D
LA English
DT Article
ID SUBMILLIMETER-RANGE; MACROSCOPIC FORCES; SCALE-INVARIANCE; CONSTRAINTS;
PARTICLES; FRICTION; GRAVITY; LAW
AB We discuss the role of the proximity force approximation in deriving limits to the existence of Yukawian forces-predicted in the submillimeter range by many unification models-from Casimir force experiments using the sphere-plane geometry. Two forms of this approximation are discussed, the first used in most analyses of the residuals from the Casimir force experiments performed so far, and the second recently discussed in this context in R. Decca et al. [Phys. Rev. D 79, 124021 (2009)]. We show that the former form of the proximity force approximation overestimates the expected Yukawa force and that the relative deviation from the exact Yukawa force is of the same order of magnitude, in the realistic experimental settings, as the relative deviation expected between the exact Casimir force and the Casimir force evaluated in the proximity force approximation. This implies both a systematic shift making the actual limits to the Yukawa force weaker than claimed so far, and a degree of uncertainty in the alpha-lambda plane related to the handling of the various approximations used in the theory for both the Casimir and the Yukawa forces. We further argue that the recently discussed form for the proximity force approximation is equivalent, for a geometry made of a generic object interacting with an infinite planar slab, to the usual exact integration of any additive two-body interaction, without any need to invoke approximation schemes. If the planar slab is of finite size, an additional source of systematic error arises due to the breaking of the planar translational invariance of the system, and we finally discuss to what extent this may affect limits obtained on power-law and Yukawa forces.
C1 [Dalvit, Diego A. R.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Onofrio, Roberto] Univ Padua, Dipartimento Fis Galileo Galilei, I-35131 Padua, Italy.
[Onofrio, Roberto] Dartmouth Coll, Dept Phys & Astron, Hanover, NH 03755 USA.
RP Dalvit, DAR (reprint author), Los Alamos Natl Lab, Div Theoret, MS B213, Los Alamos, NM 87545 USA.
NR 56
TC 11
Z9 11
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2470-0010
EI 2470-0029
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 6
AR 064025
DI 10.1103/PhysRevD.80.064025
PG 10
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501ME
UT WOS:000270385200083
ER
PT J
AU Green, D
Horn, B
Senatore, L
Silverstein, E
AF Green, Daniel
Horn, Bart
Senatore, Leonardo
Silverstein, Eva
TI Trapped inflation
SO PHYSICAL REVIEW D
LA English
DT Article
ID PROBE WMAP OBSERVATIONS; DENSITY PERTURBATIONS; K-INFLATION; UNIVERSE;
COSMOLOGY; FLATNESS; HORIZON; MODELS; FIELD
AB We analyze a distinctive mechanism for inflation in which particle production slows down a scalar field on a steep potential and show how it descends from angular moduli in string compactifications. The analysis of density perturbations-taking into account the integrated effect of the produced particles and their quantum fluctuations-requires somewhat new techniques that we develop. We then determine the conditions for this effect to produce 60 e-foldings of inflation with the correct amplitude of density perturbations at the Gaussian level and show that these requirements can be straightforwardly satisfied. Finally, we estimate the amplitude of the non-Gaussianity in the power spectrum and find a significant equilateral contribution.
C1 [Green, Daniel; Horn, Bart; Silverstein, Eva] Stanford Univ, SLAC, Stanford, CA 94305 USA.
[Green, Daniel; Horn, Bart; Silverstein, Eva] Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
[Senatore, Leonardo] Inst Adv Study, Sch Nat Sci, Princeton, NJ 08540 USA.
[Senatore, Leonardo] Harvard Univ, Jefferson Phys Lab, Cambridge, MA 02138 USA.
[Senatore, Leonardo] Harvard Univ, Ctr Astrophys, Cambridge, MA 02138 USA.
RP Green, D (reprint author), Stanford Univ, SLAC, Stanford, CA 94305 USA.
FU NSF [PHY-0244728, PHY-0503584]; DOE [DE-AC03-76SF00515]; BSF; FQXi;
Mellam Family Graduate Program; NSERC; William K. Bowes Jr. Stanford
Graduate Program
FX We thank Tomas Rube for early collaboration. We thank N. Arkani-Hamed,
L. Kofman, A. Linde, X. Liu, L. McAllister, A. Westphal, and M.
Zaldarriaga for useful discussions. The research of D. G., B. H., and E.
S. is supported by NSF Grant No. PHY-0244728, by the DOE under Contract
No. DE-AC03-76SF00515, and by BSF and FQXi grants. D. G. is also
supported by the Mellam Family Graduate Program and NSERC. B. H. is also
supported by the William K. Bowes Jr. Stanford Graduate Program. The
research of L. S. is supported in part by the National Science
Foundation under Grant No. PHY-0503584.
NR 61
TC 81
Z9 81
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 6
AR 063533
DI 10.1103/PhysRevD.80.063533
PG 16
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501ME
UT WOS:000270385200052
ER
PT J
AU Grigoryan, HR
Lee, TSH
Yee, HU
AF Grigoryan, Hovhannes R.
Lee, T. -S. H.
Yee, Ho-Ung
TI Electromagnetic nucleon-to-delta transition in holographic QCD
SO PHYSICAL REVIEW D
LA English
DT Article
ID RARITA-SCHWINGER WAVES; FORM-FACTORS; SKYRME MODEL; STATIC PROPERTIES;
GAMMA-ASTERISK; QUARK-MODEL; PHOTOPRODUCTION; QUANTIZATION; EXCITATION;
PARTICLES
AB We study nucleon-to-delta electromagnetic transition form factors and relations between them within the framework of the holographic dual model of QCD proposed by Sakai and Sugimoto. In this setup, baryons appear as topological solitons of the five-dimensional holographic gauge theory that describes a tower of mesons and their interactions. We find a relativistic extension of the nucleon-delta-vector meson interaction vertices and use these to calculate transition form factors from holographic QCD. We observe that at low momentum transfer, magnetic dipole, electric and Coulomb quadrupole form factors, and their ratios follow the patterns expected in the large N-c limit. Our results at this approximation are in reasonable agreement with experiment.
C1 [Grigoryan, Hovhannes R.; Lee, T. -S. H.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
[Yee, Ho-Ung] Abdus Salaam Int Ctr Theoret Phys, I-34014 Trieste, Italy.
RP Grigoryan, HR (reprint author), Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
EM grigoryan@phy.anl.gov; lee@phy.anl.gov; hyee@ictp.it
FU U. S. Department of Energy; Office of Nuclear Physics Division
[DE-AC02-06CH11357]
FX This work is supported partially by the U. S. Department of Energy,
Office of Nuclear Physics Division, under Contract No.
DE-AC02-06CH11357.
NR 93
TC 17
Z9 17
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 5
AR 055006
DI 10.1103/PhysRevD.80.055006
PG 15
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501MB
UT WOS:000270384900082
ER
PT J
AU Hooper, D
Tait, TMP
AF Hooper, Dan
Tait, Tim M. P.
TI Neutralinos in an extension of the minimal supersymmetric standard model
as the source of the PAMELA positron excess
SO PHYSICAL REVIEW D
LA English
DT Article
ID HIGGS-BOSON; DARK-MATTER; PHASE-TRANSITION; ELECTRONS; SEARCH; SECTOR;
LEP
AB We consider a scenario within the minimal supersymmetric standard model (MSSM) extended by a singlet chiral superfield, in which neutralino dark matter annihilates to light singletlike Higgs bosons, which proceed to decay to either electron-positron or muon-antimuon pairs. Unlike neutralino annihilations in the MSSM, this model can provide a good fit to the PAMELA cosmic ray positron fraction excess. Furthermore, the singletlike Higgs bosons can induce a large Sommerfeld enhancement and provide an annihilation rate sufficient to accommodate the observed positron excess.
C1 [Hooper, Dan] Fermilab Natl Accelerator Lab, Ctr Particle Astrophys, Batavia, IL 60510 USA.
[Hooper, Dan] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA.
[Tait, Tim M. P.] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA.
[Tait, Tim M. P.] Argonne Natl Lab, HEP Div, Argonne, IL 60439 USA.
RP Hooper, D (reprint author), Fermilab Natl Accelerator Lab, Ctr Particle Astrophys, POB 500, Batavia, IL 60510 USA.
NR 75
TC 36
Z9 36
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 5
AR 055028
DI 10.1103/PhysRevD.80.055028
PG 5
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501MB
UT WOS:000270384900104
ER
PT J
AU Ishikawa, KI
Ishizuka, N
Izubuchi, T
Kadoh, D
Kanaya, K
Kuramashi, Y
Namekawa, Y
Okawa, M
Taniguchi, Y
Ukawa, A
Ukita, N
Yoshie, T
AF Ishikawa, K. -I.
Ishizuka, N.
Izubuchi, T.
Kadoh, D.
Kanaya, K.
Kuramashi, Y.
Namekawa, Y.
Okawa, M.
Taniguchi, Y.
Ukawa, A.
Ukita, N.
Yoshie, T.
CA PACS-CS Collaboration
TI SU(2) and SU(3) chiral perturbation theory analyses on baryon masses in
2+1 flavor lattice QCD
SO PHYSICAL REVIEW D
LA English
DT Article
ID SIGMA-TERM; NUCLEON
AB We investigate the quark mass dependence of baryon masses in 2 + 1 flavor lattice QCD using SU(3) heavy baryon chiral perturbation theory up to one-loop order. The baryon mass data used for the analyses are obtained for the degenerate up-down quark mass of 3 to 24 MeV and two choices of the strange quark mass around the physical value. We find that the SU(3) chiral expansion fails to describe both the octet and the decuplet baryon data if phenomenological values are employed for the meson-baryon couplings. The SU(2) case is also examined for the nucleon. We observe that higher order terms are controlled only around the physical point. We also evaluate finite size effects using SU(3) heavy baryon chiral perturbation theory, finding small values of order 1% even at the physical point.
C1 [Ishikawa, K. -I.; Okawa, M.] Hiroshima Univ, Grad Sch Sci, Hiroshima 7398526, Japan.
[Ishizuka, N.; Kanaya, K.; Kuramashi, Y.; Taniguchi, Y.; Ukawa, A.; Yoshie, T.] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058571, Japan.
[Ishizuka, N.; Kadoh, D.; Kuramashi, Y.; Namekawa, Y.; Taniguchi, Y.; Ukawa, A.; Ukita, N.; Yoshie, T.] Univ Tsukuba, Ctr Computat Sci, Tsukuba, Ibaraki 3058577, Japan.
[Izubuchi, T.] Brookhaven Natl Lab, Riken BNL Res Ctr, Upton, NY 11973 USA.
[Izubuchi, T.] Kanazawa Univ, Inst Theoret Phys, Kanazawa, Ishikawa 9201192, Japan.
RP Ishikawa, KI (reprint author), Hiroshima Univ, Grad Sch Sci, Hiroshima 7398526, Japan.
RI Ukawa, Akira/A-6549-2011; Kuramashi, Yoshinobu /C-8637-2016
FU Ministry of Education, Culture, Sports, Science and Technology
[16740147, 17340066, 18104005, 18540250, 18740130, 19740134, 20340047,
20540248, 20740123, 20740139]
FX Numerical calculations for the present work have been carried out on the
PACS-CS computer under the "Interdisciplinary Computational Science
Program'' of Center for Computational Sciences, University of Tsukuba. A
part of the code development has been carried out on Hitachi SR11000 at
Information Media Center of Hiroshima University. This work is supported
in part by Grants-in-Aid for Scientific Research from the Ministry of
Education, Culture, Sports, Science and Technology (No. 16740147, No.
17340066, No. 18104005, No. 18540250, No. 18740130, No. 19740134, No.
20340047, No. 20540248, No. 20740123, and No. 20740139).
NR 20
TC 34
Z9 34
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 5
AR 054502
DI 10.1103/PhysRevD.80.054502
PG 17
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501MB
UT WOS:000270384900068
ER
PT J
AU Jenkins, JP
Goldman, T
AF Jenkins, James P.
Goldman, T.
TI Some radiative corrections to neutrino scattering: Neutral currents
SO PHYSICAL REVIEW D
LA English
DT Article
ID CHARGE-SYMMETRY VIOLATION; SINGLE-PION-PRODUCTION; SIMULATION; PHOTONS;
PHYSICS; DECAYS
AB With the advent of high precision neutrino scattering experiments comes the need for improved radiative corrections. We present a phenomenological analysis of some contributions to the production of photons in neutrino neutral current scattering that are relevant to experiments subsuming the 1% level of accuracy.
C1 [Jenkins, James P.; Goldman, T.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Jenkins, JP (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
EM jjenkins6@lanl.gov; tgoldman@lanl.gov
NR 31
TC 6
Z9 6
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 5
AR 053005
DI 10.1103/PhysRevD.80.053005
PG 9
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501MB
UT WOS:000270384900028
ER
PT J
AU Ji, CR
Melnitchouk, W
Thomas, AW
AF Ji, Chueng-Ryong
Melnitchouk, W.
Thomas, A. W.
TI Equivalence of pion loops in equal-time and light-front dynamics
SO PHYSICAL REVIEW D
LA English
DT Article
ID GENERALIZED PARTON DISTRIBUTIONS; LEPTON-NUCLEON SCATTERING;
SYMMETRY-BREAKING; INFINITE-MOMENTUM; CHIRAL DYNAMICS; BAG MODEL; SEA;
MATRIX; VECTOR; PROTON
AB We demonstrate the equivalence of the light-front and equal-time formulations of pionic corrections to nucleon properties. As a specific example, we consider the self-energy Sigma of a nucleon dressed by pion loops, for both pseudovector and pseudoscalar pi NN couplings. We derive the leading and next-to-leading nonanalytic behavior of Sigma on the light front, and show explicitly their equivalence in the rest frame and infinite momentum frame in equal-time quantization, as well as in a manifestly covariant formulation.
C1 [Ji, Chueng-Ryong] N Carolina State Univ, Dept Phys, Raleigh, NC 27692 USA.
[Melnitchouk, W.; Thomas, A. W.] Jefferson Lab, Newport News, VA 23606 USA.
[Thomas, A. W.] Coll William & Mary, Williamsburg, VA 23187 USA.
RP Ji, CR (reprint author), N Carolina State Univ, Dept Phys, Box 8202, Raleigh, NC 27692 USA.
RI Thomas, Anthony/G-4194-2012; Ji, Chueng/J-2623-2013
OI Thomas, Anthony/0000-0003-0026-499X;
NR 39
TC 14
Z9 14
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
EI 1550-2368
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 5
AR 054018
DI 10.1103/PhysRevD.80.054018
PG 11
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501MB
UT WOS:000270384900056
ER
PT J
AU Karsch, F
Kitazawa, M
AF Karsch, Frithjof
Kitazawa, Masakiyo
TI Quark propagator at finite temperature and finite momentum in quenched
lattice QCD
SO PHYSICAL REVIEW D
LA English
DT Article
ID HOT GAUGE-THEORIES; GLUON PLASMA; CHIRAL TRANSITION; EXCITATIONS;
THERMODYNAMICS; COLLABORATION; PERSPECTIVE; AMPLITUDES; COLLISIONS;
SPECTRUM
AB We present an analysis of the quark spectral function above and below the critical temperature for deconfinement performed at zero and nonzero momentum in quenched lattice QCD using clover improved Wilson fermions in Landau gauge. It is found that the temporal quark correlation function in the deconfined phase near the critical temperature is well reproduced by a two-pole ansatz for the spectral function. This indicates that excitation modes of the quark field have small decay rates. The bare quark mass and momentum dependence of the spectral function is analyzed with this ansatz. In the chiral limit we find that the quark spectral function has two collective modes corresponding to the normal and plasmino excitations in the high-temperature limit. Over a rather wide temperature range in the deconfined phase the pole mass of these modes at zero momentum, which corresponds to the thermal mass of the quark, is approximately proportional to temperature. With increasing bare quark masses the plasmino mode gradually disappears, and the spectral function is dominated by a single pole. We also discuss quasiparticle properties of heavy quarks in the deconfined phase. In the confined phase, it is found that the pole ansatz for the spectral function fails completely.
C1 [Karsch, Frithjof] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Karsch, Frithjof] Univ Bielefeld, Fak Phys, D-33615 Bielefeld, Germany.
[Kitazawa, Masakiyo] Osaka Univ, Dept Phys, Osaka 5600043, Japan.
RP Karsch, F (reprint author), Brookhaven Natl Lab, Bldg 510A, Upton, NY 11973 USA.
EM karsch@bnl.gov; kitazawa@phys.sci.osaka-u.ac.jp
NR 62
TC 29
Z9 30
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 5
AR 056001
DI 10.1103/PhysRevD.80.056001
PG 18
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501MB
UT WOS:000270384900108
ER
PT J
AU Kosowsky, A
Bhattacharya, S
AF Kosowsky, Arthur
Bhattacharya, Suman
TI A future test of gravitation using galaxy cluster velocities
SO PHYSICAL REVIEW D
LA English
DT Article
ID PECULIAR VELOCITIES; ZELDOVICH; TELESCOPE; UNIVERSE; PARAMETERS; LIMITS;
SPACE
AB The accelerating expansion of the Universe at recent epochs has called into question the validity of general relativity on cosmological scales. One probe of gravity is a comparison of expansion history of the Universe with the history of structure growth via gravitational instability: general relativity predicts a specific relation between these two observables. Here we show that the mean pairwise streaming velocity of galaxy clusters provides a useful method of constraining this relation. Galaxy cluster velocities can be measured via the kinetic Sunyaev-Zeldovich distortion of the cosmic microwave background radiation. Future surveys can provide large enough catalogs of cluster velocities to discriminate between general relativity and other proposed gravitational theories.
C1 [Kosowsky, Arthur] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA.
[Bhattacharya, Suman] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Kosowsky, A (reprint author), Univ Pittsburgh, Dept Phys & Astron, 3941 OHara St, Pittsburgh, PA 15260 USA.
EM kosowsky@pitt.edu; sumanb@lanl.gov
FU NSF [AST-0807790]
FX We thank Adam Riess for alerting us to the SHOES project Hubble constant
measurement. A. K. gratefully acknowledges support from NSF Grant No.
AST-0807790.
NR 40
TC 16
Z9 16
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2470-0010
EI 2470-0029
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 6
AR 062003
DI 10.1103/PhysRevD.80.062003
PG 4
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501ME
UT WOS:000270385200008
ER
PT J
AU Lin, HW
Cohen, SD
Mathur, N
Orginos, K
AF Lin, Huey-Wen
Cohen, Saul D.
Mathur, Nilmani
Orginos, Kostas
TI Bottom-hadron mass splittings from static-quark action on 2+1-flavor
lattices
SO PHYSICAL REVIEW D
LA English
DT Article
ID CHIRAL PERTURBATION-THEORY; EFFECTIVE FIELD-THEORY; HEAVY-QUARK; QCD;
FERMIONS; PHYSICS; SYMMETRIES
AB We calculate bottom-hadron mass splittings with respect to B-d and A(b) using full QCD with 2 + 1 flavors of dynamical Kogut-Susskind sea quarks and domain-wall valence quarks along with a static heavy quark. Our lattices have spatial volume of (2.5 fm)(3) with lattice spacing about 0.124 fm and a range of pion masses as low as 291 MeV. Our results are in agreement with experimental observations and other lattice calculations within our statistical and systematic errors. In particular, we find the mass of the Omega(b) to be consistent with the recent CDF measurement. We also predict the mass for the as yet unobserved Xi(b)' to be 5955(27) MeV.
C1 [Lin, Huey-Wen; Cohen, Saul D.; Orginos, Kostas] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
[Mathur, Nilmani] Tata Inst Fundamental Res, Dept Theoret Phys, Bombay 400005, Maharashtra, India.
[Orginos, Kostas] Coll William & Mary, Dept Phys, Williamsburg, VA 23187 USA.
RP Lin, HW (reprint author), Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
OI Cohen, Saul/0000-0001-6804-3320
FU Jeffress Memorial Trust [J-813]; DOE [DE-FG02-07ER41527,
DE-FG02-04ER41302, DE-AC05-06OR23177]; [DST-SR/S2/RJN-19/2007]
FX We thank the NPLQCD collaboration for sharing their propagators: most of
the light-quark and all of the strange-quark propagators used in this
work; we also thank LHPC for some light-quark propagators. We thank
Martin J. Savage for many useful discussions and feedback concerning
this work. These calculations were performed using the Chroma software
suite [79] on clusters at Jefferson Laboratory using time awarded under
the SciDAC Initiative. K. O. is supported in part by the Jeffress
Memorial Trust Grant No. J-813, DOE OJI Grant No. DE-FG02-07ER41527 and
DOE Grant No. DE-FG02-04ER41302. N. M. was supported under the Grant No.
DST-SR/S2/RJN-19/2007. This work was supported by DOE Contract No.
DE-AC05-06OR23177, under which Jefferson Science Associates, LLC,
operates Jefferson Laboratory.
NR 79
TC 9
Z9 9
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 5
AR 054027
DI 10.1103/PhysRevD.80.054027
PG 10
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501MB
UT WOS:000270384900065
ER
PT J
AU Lombriser, L
Hu, W
Fang, W
Seljak, U
AF Lombriser, Lucas
Hu, Wayne
Fang, Wenjuan
Seljak, Uros
TI Cosmological constraints on DGP braneworld gravity with brane tension
SO PHYSICAL REVIEW D
LA English
DT Article
ID POWER-SPECTRUM; SKY SURVEY; DATA SET; SPACE; 2MASS
AB We perform a Markov chain Monte Carlo analysis of the self-accelerating and normal branch of Dvali-Gabadadze-Porrati braneworld gravity. By adopting a parametrized post-Friedmann description of gravity, we utilize all of the cosmic microwave background data, including the largest scales, and its correlation with galaxies in addition to the geometrical constraints from supernovae distances and the Hubble constant. We find that on both branches brane tension or a cosmological constant is required at high significance with no evidence for the unique Dvali-Gabadadze-Porrati modifications. The crossover scale must therefore be substantially greater than the Hubble scale H(0)r(c) > 3 and 3.5 at the 95% C.L. with and without uncertainties from spatial curvature. With spatial curvature, the limit from the normal branch is substantially assisted by the galaxy cross correlation which highlights its importance in constraining infrared modifications to gravity.
C1 [Lombriser, Lucas; Seljak, Uros] Univ Zurich, Inst Theoret Phys, CH-8057 Zurich, Switzerland.
[Hu, Wayne] Univ Chicago, Enrico Fermi Inst, Dept Astron & Astrophys, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
[Fang, Wenjuan] Columbia Univ, Dept Phys, New York, NY 10027 USA.
[Fang, Wenjuan] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Seljak, Uros] Univ Calif Berkeley, Dept Phys & Astron, Berkeley, CA 94720 USA.
[Seljak, Uros] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Seljak, Uros] Ewha Womans Univ, Seoul 120750, South Korea.
RP Lombriser, L (reprint author), Univ Zurich, Inst Theoret Phys, Winterthurerstr 190, CH-8057 Zurich, Switzerland.
FU Swiss National Foundation [200021-116696/1]; WCU [R32-2008000-10130-0];
University of Chicago through Grants NSF [PHY-0114422, PHY-0551142];
U.S. Department of Energy [DE-FG02-90ER-40560, DE-AC02-98CH10886]; David
and Lucile Packard Foundation
FX We would like to thank Kazuya Koyama, Sanjeev Seehra, Fabian Schmidt,
and Yong-Seon Song for useful discussions and Anze Slosar for helpful
insights into the COSMOMC and ISWWLL codes. Computational resources were
provided on the zBox2 supercomputer at the University of Zurich. This
work was partially supported by the Swiss National Foundation under
Contract No. 200021-116696/1 and WCU Grant No. R32-2008000-10130-0. W.
H. was supported by the Kavli Institute for Cosmological Physics (KICP)
at the University of Chicago through Grants NSF No. PHY-0114422 and NSF
No. PHY-0551142, U.S. Department of Energy Contract No.
DE-FG02-90ER-40560, and the David and Lucile Packard Foundation. W. F.
was supported by the U.S. Department of Energy Contract No.
DE-AC02-98CH10886.
NR 42
TC 48
Z9 48
U1 1
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2470-0010
EI 2470-0029
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 6
AR 063536
DI 10.1103/PhysRevD.80.063536
PG 12
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501ME
UT WOS:000270385200055
ER
PT J
AU Megias, E
Arriola, ER
Salcedo, LL
AF Megias, E.
Ruiz Arriola, E.
Salcedo, L. L.
TI Trace anomaly, thermal power corrections, and dimension two condensates
in the deconfined phase
SO PHYSICAL REVIEW D
LA English
DT Article
ID LATTICE GAUGE-THEORY; LOW-ENERGY THEOREMS; 3-LOOP FREE-ENERGY;
EQUATION-OF-STATE; YANG-MILLS THEORY; HIGH-TEMPERATURE;
FINITE-TEMPERATURE; QUANTUM CHROMODYNAMICS; QCD PRESSURE; FIELD-THEORY
AB The trace anomaly of gluodynamics on the lattice shows clear fingerprints of a dimension two condensate above the phase transition. The condensate manifests itself through even powers of the inverse temperature while the total perturbative contribution corresponds to a mild temperature dependence and turns out to be compatible with zero within errors. We try several resummation methods based on a renormalization group improvement. The trace anomaly data are analyzed and compared with other determinations of the dimension two condensate based on the Polyakov loop and the heavy q (q) over bar free energy, yielding roughly similar numerical values. The role of glueballs near the transition is also discussed.
C1 [Megias, E.] Brookhaven Natl Lab, Dept Phys, Nucl Theory Grp, Upton, NY 11973 USA.
[Ruiz Arriola, E.; Salcedo, L. L.] Univ Granada, Dept Fis Atom Mol & Nucl, E-18071 Granada, Spain.
RP Megias, E (reprint author), Brookhaven Natl Lab, Dept Phys, Nucl Theory Grp, Upton, NY 11973 USA.
EM emegias@quark.phy.bnl.gov; earriola@ugr.es; salcedo@ugr.es
RI Salcedo, Lorenzo Luis/A-8845-2008; Ruiz Arriola, Enrique/A-9388-2015;
OI Salcedo, Lorenzo Luis/0000-0002-3575-0341; Ruiz Arriola,
Enrique/0000-0002-9570-2552; Megias, Eugenio/0000-0002-6735-9013
FU Spanish DGI; FEDER [FIS2008-01143/FIS]; Junta de Andalucia [FQM-225-05];
EU [RII3-CT-2004506078]; U.S. Department of Energy [DE-AC02-98CH10886]
FX E. Megias is supported from the joint sponsorship by the Fulbright
Program of the U. S. Department of State and Spanish Ministry of
Education and Science. This work was supported by Spanish DGI and FEDER
funds with Grants No. FIS2008-01143/FIS, Junta de Andalucia Grant No.
FQM-225-05, EU Integrated Infrastructure Initiative Hadron Physics
Project Contract No. RII3-CT-2004506078, and U.S. Department of Energy
Contract No. DE-AC02-98CH10886. We thank D. Kharzeev and A. Dumitru for
useful comments, and P. Petreczky for a careful reading of the
manuscript. We also thank S. Ejiri for providing us with the lattice
data of Ref. [20].
NR 68
TC 34
Z9 35
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 5
AR 056005
DI 10.1103/PhysRevD.80.056005
PG 14
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501MB
UT WOS:000270384900112
ER
PT J
AU Padmanabhan, N
White, M
AF Padmanabhan, Nikhil
White, Martin
TI Calibrating the baryon oscillation ruler for matter and halos
SO PHYSICAL REVIEW D
LA English
DT Article
ID LARGE-SCALE STRUCTURE; COLD DARK-MATTER; POWER SPECTRUM; FLUCTUATIONS;
EVOLUTION; REDSHIFT; GALAXIES; PERTURBATION; UNIVERSE; DENSITY
AB We characterize the nonlinear evolution of the baryon acoustic feature as traced by the dark matter and halos, using a combination of perturbation theory and N-body simulations. We confirm that the acoustic peak traced by the dark matter is both broadened and shifted as structure forms, and that this shift is well described by second-order perturbation theory. These shifts persist for dark matter halos, and are a simple function of halo bias, with the shift (mostly) increasing with increasing bias. Extending our perturbation theory results to halos with simple two parameter bias models (both in Lagrangian and Eulerian space) quantitatively explains the observed shifts. In particular, we demonstrate that there are additional terms that contribute to the shift that are absent for the matter. At z = 0 for currently favored cosmologies, the matter shows shifts of similar to 0.5%, b = 1 halos shift the acoustic scale by similar to 0.2%, while b = 2 halos shift it by similar to 0.5%; these shifts decrease by the square of the growth factor D(z) at higher redshifts. These results are easily generalized to galaxies within the halo model, where we show that simple galaxy models show marginally larger shifts than the correspondingly biased halos, due to the contribution of satellites in high mass halos. While our focus here is on real space, our results make specific predictions for redshift space. For currently favored cosmological models, we find that the shifts for halos at z = 0 increase by similar to 0.3%; at high z, they increase by similar to 0.5% D(2). Our results demonstrate that these theoretical systematics are smaller than the statistical precision of upcoming surveys, even if one ignored the corrections discussed here. Simple modeling, along the lines discussed here, has the potential to reduce these systematics to below the levels of cosmic variance limited surveys.
C1 [Padmanabhan, Nikhil] Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA 94720 USA.
[White, Martin] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[White, Martin] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA.
RP Padmanabhan, N (reprint author), Lawrence Berkeley Natl Lab, Div Phys, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM NPadmanabhan@lbl.gov; mwhite@berkeley.edu
RI Padmanabhan, Nikhil/A-2094-2012; White, Martin/I-3880-2015
OI White, Martin/0000-0001-9912-5070
NR 33
TC 63
Z9 64
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 6
AR 063508
DI 10.1103/PhysRevD.80.063508
PG 13
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501ME
UT WOS:000270385200027
ER
PT J
AU Peardon, M
Bulava, J
Foley, J
Morningstar, C
Dudek, J
Edwards, RG
Joo, B
Lin, HW
Richards, DG
Juge, KJ
AF Peardon, Michael
Bulava, John
Foley, Justin
Morningstar, Colin
Dudek, Jozef
Edwards, Robert G.
Joo, Balint
Lin, Huey-Wen
Richards, David G.
Juge, Keisuke Jimmy
CA Hadron Spectrum Collaboration
TI Novel quark-field creation operator construction for hadronic physics in
lattice QCD
SO PHYSICAL REVIEW D
LA English
DT Article
ID GAUGE-THEORY; MATRIX; FERMIONS
AB A new quark-field smearing algorithm is defined which enables efficient calculations of a broad range of hadron correlation functions. The technique applies a low-rank operator to define smooth fields that are to be used in hadron creation operators. The resulting space of smooth fields is small enough that all elements of the reduced quark propagator can be computed exactly at reasonable computational cost. Correlations between arbitrary sources, including multihadron operators can be computed a posteriori without requiring new lattice Dirac operator inversions. The method is tested on realistic lattice sizes with light dynamical quarks.
C1 [Peardon, Michael] Univ Dublin Trinity Coll, Sch Math, Dublin 2, Ireland.
[Bulava, John; Foley, Justin; Morningstar, Colin] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA.
[Dudek, Jozef; Edwards, Robert G.; Joo, Balint; Lin, Huey-Wen; Richards, David G.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
[Juge, Keisuke Jimmy] Univ Pacific, Dept Phys, Stockton, CA 95211 USA.
RP Peardon, M (reprint author), Univ Dublin Trinity Coll, Sch Math, Dublin 2, Ireland.
EM mjp@maths.tcd.ie
RI Morningstar, Colin/N-6925-2014;
OI Morningstar, Colin/0000-0002-0607-9923; Peardon,
Michael/0000-0002-4199-6284; Bulava, John/0000-0001-9447-8459
FU Science Foundation Ireland [07/RFP/PHYF168]; National Science Foundation
[NSF-PHY-0653315, NSF-PHY-0510020]; DOE [DE-AC05-06OR23177]; [NSF-
PHY-0704171]
FX The CHROMA software suite [26] was used to perform this work on clusters
at Jefferson Laboratory using time awarded under the USQCD Initiative.
We thank Sinead Ryan for many helpful comments on this manuscript. M. P.
is supported by Science Foundation Ireland under research Grant No.
07/RFP/PHYF168. M. P. is extremely grateful for the generous hospitality
of the theory center at TJNAF during the early stages of this work. J.
B., J. F., and C. M. are supported by National Science Foundation Grants
No. NSF-PHY-0653315 and NSF-PHY-0510020. K. J. J is supported by Grant
No. NSF- PHY-0704171. This work was supported by DOE Contract No.
DE-AC05-06OR23177, under which Jefferson Science Associates, LLC,
operates Jefferson Laboratory.
NR 26
TC 93
Z9 93
U1 0
U2 7
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 5
AR 054506
DI 10.1103/PhysRevD.80.054506
PG 11
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501MB
UT WOS:000270384900072
ER
PT J
AU Smith, RE
Hernandez-Monteagudo, C
Seljak, U
AF Smith, Robert E.
Hernandez-Monteagudo, Carlos
Seljak, Uros
TI Impact of scale dependent bias and nonlinear structure growth on the
integrated Sachs-Wolfe effect: Angular power spectra
SO PHYSICAL REVIEW D
LA English
DT Article
ID MICROWAVE BACKGROUND ANISOTROPIES; COSMOLOGICAL PERTURBATION-THEORY;
PROBE WMAP OBSERVATIONS; COLD DARK-MATTER; INITIAL CONDITIONS; GALAXY
FORMATION; UNIVERSE; EVOLUTION; STATISTICS; CONSTANT
AB We investigate the impact of nonlinear evolution of the gravitational potentials in the Delta CDM model on the integrated Sachs-Wolfe (ISW) contribution to the cosmic microwave background (CMB) temperature power spectrum, and on the cross-power spectrum of the CMB and a set of biased tracers of the mass. We use an ensemble of N-body simulations to directly follow the potentials and compare the results to analytic PT methods. The predictions from the PT match the results to high precision fork < 0.2h Mpc(-1). We compute the nonlinear corrections to the angular power spectrum and find them to be < 10% of linear theory for l < 100. These corrections are swamped by the cosmic variance. On scales l > 100 the departures are more significant; however, the CMB signal is more than a factor 103 larger at this scale. Nonlinear ISW effects therefore play no role in shaping the CMB power spectrum for l < 1500. We analyze the CMB-density tracer cross spectrum using simulations and renormalized bias PT, and find good agreement. The usual assumption is that nonlinear evolution enhances the growth of structure and counteracts the linear ISW on small scales, leading to a change in sign of the CMB large-scale structure cross spectrum at small scales. However, PT analysis suggests that this trend reverses at late times when the logarithmic growth rate f = d lnD/d lna < 0.5 or Omega(m)(z) < 0.3. Numerical results confirm these expectations and we find no sign change in ISW large-scale structure cross power for low redshifts. Corrections due to nonlinearity and scale dependence of the bias are found to be < 10% for l < 100, and are therefore below the signal to noise of the current and future measurements. Finally, we estimate the cross-correlation coefficient between the CMB and halos and show that it can be made to match that for the dark matter and CMB to within 5% for thin redshift shells, thus mitigating the need to model bias evolution.
C1 [Smith, Robert E.; Seljak, Uros] Univ Zurich, Inst Theoret Phys, CH-8037 Zurich, Switzerland.
[Hernandez-Monteagudo, Carlos] Max Planck Inst Astrophys, D-85741 Garching, Germany.
[Seljak, Uros] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Seljak, Uros] Ewha Womans Univ, Seoul 120750, South Korea.
RP Smith, RE (reprint author), Univ Zurich, Inst Theoret Phys, CH-8037 Zurich, Switzerland.
EM res@physik.unizh.ch; chm@MPA-Garching.MPG.DE; seljak@physik.unizh.ch
NR 79
TC 28
Z9 28
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2470-0010
EI 2470-0029
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 6
AR 063528
DI 10.1103/PhysRevD.80.063528
PG 28
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501ME
UT WOS:000270385200047
ER
PT J
AU Unsal, M
AF Uensal, Mithat
TI Magnetic bion condensation: A new mechanism of confinement and mass gap
in four dimensions
SO PHYSICAL REVIEW D
LA English
DT Article
ID SYMMETRY-BREAKING; GAUGE-THEORY; GLUINO CONDENSATE; FIELD-THEORIES;
INSTANTONS; MONOPOLES; DYNAMICS; SOLITONS; DUALITY; QCD
AB In recent work, we derived the long-distance confining dynamics of certain QCD-like gauge theories formulated on small S(1) X R(3) based on symmetries, an index theorem, and Abelian duality. Here, we give the microscopic derivation. The solution reveals a new mechanism of confinement in QCD(adj) in the regime where we have control over both perturbative and nonperturbative aspects. In particular, consider SU(2)QCD(adj) theory with 1 <= n(f) <= 4 Majorana fermions, a theory which undergoes gauge symmetry breaking at small S(1). If the magnetic charge of the Bogomol'nyi-Prasad-Sommerfield (BPS) monopole is normalized to unity, we show that confinement occurs due to condensation of objects with magnetic charge 2, not 1. Because of index theorems, we know that such an object cannot be a two identical monopole configuration. Its net topological charge must vanish, and hence it must be topologically indistinguishable from the perturbative vacuum. We construct such non-self-dual topological excitations, the magnetically charged, topologically null molecules of a BPS monopole and (KK) over bar antimonopole, which we refer to as magnetic bions. An immediate puzzle with this proposal is the apparent Coulomb repulsion between the BPS-KK pair. An attraction which overcomes the Coulomb repulsion between the two is induced by 2n(f)-fermion exchange. Bion condensation is also the mechanism of confinement in N = 1 SYM on the same four-manifold. The SU(N) generalization hints a possible hidden integrability behind nonsupersymmetric QCD of affine Toda type, and allows us to analytically compute the mass gap in the gauge sector. We currently do not know the extension to R(4).
C1 [Uensal, Mithat] Stanford Univ, SLAC, Menlo Pk, CA 94025 USA.
[Uensal, Mithat] Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
RP Unsal, M (reprint author), Stanford Univ, SLAC, Menlo Pk, CA 94025 USA.
EM unsal@slac.stanford.edu
FU U. S. Department of Energy [DE-AC02-76SF00515]
FX Note added.-There was a large time delay between the arXiv version of
this paper and its submission to a journal. In the meantime, new useful
techniques, such as center stabilizing double-trace deformations, which
allows a smooth connection of small and large S1 physics, and the
relevant index theorem for generic topological excitations on
S1 xXR3 have been found. These techniques enabled
us to study nonperturbative dynamics of all vectorlike and even chiral
theories on S1 X R3. In all chiral theories and
QCD-like theories with two index matter representations, we now
understand that magnetic bions or similar composite non-self-dual
excitations are the root cause of confinement. For a review of these
developments and related works, see the recent preprint [48].
NR 48
TC 72
Z9 72
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1550-7998
J9 PHYS REV D
JI Phys. Rev. D
PD SEP
PY 2009
VL 80
IS 6
AR 065001
DI 10.1103/PhysRevD.80.065001
PG 21
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 501ME
UT WOS:000270385200103
ER
PT J
AU Liu, YM
Ecke, RE
AF Liu, Yuanming
Ecke, Robert E.
TI Heat transport measurements in turbulent rotating Rayleigh-Beacutenard
convection
SO PHYSICAL REVIEW E
LA English
DT Article
DE Benard convection; boundary layer turbulence; confined flow; vortices;
water
ID BENARD CONVECTION; THERMAL-CONVECTION; NUMBER CONVECTION; ASYMMETRIC
MODES; DEEP CONVECTION; BOUNDARY-LAYER; PRANDTL NUMBER; FLUID LAYER;
SCALE; WATER
AB We present experimental heat transport measurements of turbulent Rayleigh-Beacutenard convection with rotation about a vertical axis. The fluid, water with a Prandtl number (sigma) of about 6, was confined in a cell with a square cross section of 7.3x7.3 cm(2) and a height of 9.4 cm. Heat transport was measured for Rayleigh numbers 2x10(5)< Ra < 5x10(8) and Taylor numbers 0 < Ta < 5x10(9). We show the variation in normalized heat transport, the Nusselt number, at fixed dimensional rotation rate Omega(D), at fixed Ra varying Ta, at fixed Ta varying Ra, and at fixed Rossby number Ro. The scaling of heat transport in the range of 10(7) to about 10(9) is roughly 0.29 with a Ro-dependent coefficient or equivalently is also well fit by a combination of power laws of the form a Ra(1/5)+b Ra(1/3). The range of Ra is not sufficient to differentiate single power law or combined power-law scaling. The data are roughly consistent with an assumption that the enhancement of heat transport owing to rotation is proportional to the number of vortical structures penetrating the boundary layer. We also compare indirect measures of thermal and Ekman boundary layer thicknesses to assess their potential role in controlling heat transport in different regimes of Ra and Ta.
C1 [Liu, Yuanming; Ecke, Robert E.] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
[Liu, Yuanming; Ecke, Robert E.] Los Alamos Natl Lab, Condensed Matter & Thermal Phys Grp, Los Alamos, NM 87545 USA.
RP Liu, YM (reprint author), CALTECH, Jet Prop Lab, 4800 Oak Grove Dr,MS 79-24, Pasadena, CA 91109 USA.
FU U.S. Department of Energy
FX We would like to thank Joe Werne, Keith Julien, Peter Vorobieff, and
Phil Marcus for helpful discussions. This work was supported by the U.S.
Department of Energy.
NR 51
TC 31
Z9 32
U1 1
U2 9
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1539-3755
J9 PHYS REV E
JI Phys. Rev. E
PD SEP
PY 2009
VL 80
IS 3
AR 036314
DI 10.1103/PhysRevE.80.036314
PN 2
PG 12
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 501LN
UT WOS:000270383500056
PM 19905219
ER
PT J
AU Rycroft, CH
Orpe, AV
Kudrolli, A
AF Rycroft, Chris H.
Orpe, Ashish V.
Kudrolli, Arshad
TI Physical test of a particle simulation model in a sheared granular
system
SO PHYSICAL REVIEW E
LA English
DT Article
ID SELF-DIFFUSION; HARD-SPHERES; FLOW; GRAVITY; SMOOTH; MEDIA; STATE
AB We report a detailed comparison of a slow gravity-driven sheared granular flow with a discrete-element simulation performed in the same geometry. In the experiments, grains flow inside a silo with a rectangular cross section and are sheared by a rough boundary on one side and smooth boundaries on the other sides. Individual grain position and motion are measured using a particle index-matching imaging technique where a fluorescent dye is added to the interstitial liquid which has the same refractive index as the glass beads. The simulations use a Cundall-Strack contact model between the grains using contact parameters that have been used in many other previous studies and ignore the hydrodynamic effects of the interstitial liquid. Computations are performed to understand the effect of particle coefficient of friction, elasticity, contact model, and polydispersity on mean flow properties. We then perform a detailed comparison of the particle fluctuation properties as measured by the displacement probability distribution function and the mean square displacement. All in all, our study suggests a high level of quantitative agreement between the simulations and experiments.
C1 [Rycroft, Chris H.] Lawrence Berkeley Lab, Dept Math, Berkeley, CA 94720 USA.
[Rycroft, Chris H.] Univ Calif Berkeley, Dept Math, Berkeley, CA 94720 USA.
[Orpe, Ashish V.; Kudrolli, Arshad] Clark Univ, Dept Phys, Worcester, MA 01610 USA.
[Orpe, Ashish V.] Natl Chem Lab, Div Chem Engn, Pune 411008, Maharashtra, India.
RP Rycroft, CH (reprint author), Lawrence Berkeley Lab, Dept Math, Berkeley, CA 94720 USA.
EM chr@math.berkeley.edu; av.orpe@ncl.res.in; akudrolli@clarku.edu
OI Rycroft, Chris/0000-0003-4677-6990
FU U. S. Department of Energy [DE-AC02-05CH11231]; National Science
Foundation [DMS-0410110, DMS-070590]; Clark University [DMR-0605664];
Lawrence Berkeley Laboratory
FX This work was supported by the Director, Office of Science,
Computational and Technology Research, U. S. Department of Energy under
Contract No. DE-AC02-05CH11231 and the National Science Foundation under
Grants No. DMS-0410110 and No. DMS-070590, and at Clark University under
Grant No. DMR-0605664. We are also grateful to the Scientific Cluster
Support (SCS) program at the Lawrence Berkeley Laboratory.
NR 47
TC 21
Z9 22
U1 0
U2 13
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1539-3755
J9 PHYS REV E
JI Phys. Rev. E
PD SEP
PY 2009
VL 80
IS 3
AR 031305
DI 10.1103/PhysRevE.80.031305
PG 16
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 501LM
UT WOS:000270383400068
PM 19905108
ER
PT J
AU Sokolov, A
Goldstein, RE
Feldchtein, FI
Aranson, IS
AF Sokolov, Andrey
Goldstein, Raymond E.
Feldchtein, Felix I.
Aranson, Igor S.
TI Enhanced mixing and spatial instability in concentrated bacterial
suspensions
SO PHYSICAL REVIEW E
LA English
DT Article
ID MICROORGANISMS; BIOCONVECTION; DIFFUSION; SYSTEM
AB High-resolution optical coherence tomography is used to study the onset of a large-scale convective motion in free-standing thin films of adjustable thickness containing suspensions of swimming aerobic bacteria. Clear evidence is found that beyond a threshold film thickness there exists a transition from quasi-two-dimensional collective swimming to three-dimensional turbulent behavior. The latter state, qualitatively different from bioconvection in dilute bacterial suspensions, is characterized by enhanced diffusivities of oxygen and bacteria. These results emphasize the impact of self-organized bacterial locomotion on the onset of three-dimensional dynamics, and suggest key ingredients necessary to extend standard models of bioconvection to incorporate effects of large-scale collective motion.
C1 [Sokolov, Andrey; Aranson, Igor S.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Sokolov, Andrey] IIT, Chicago, IL 60616 USA.
[Goldstein, Raymond E.] Univ Cambridge, Dept Appl Math & Theoret Phys, Cambridge CB3 0WA, England.
[Feldchtein, Felix I.] Imalux Corp, Cleveland, OH 44114 USA.
RP Sokolov, A (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
RI Goldstein, Raymond/F-2932-2011; Aranson, Igor/I-4060-2013
OI Goldstein, Raymond/0000-0003-2645-0598;
FU U.S. DOE [DE-AC02-06CH11357]; Schlumberger Chair Fund
FX We thank John O. Kessler for illuminating discussion. This work was
supported by the U.S. DOE, Contract No. DE-AC02-06CH11357, and the
Schlumberger Chair Fund (R. E. G.).
NR 30
TC 84
Z9 84
U1 3
U2 23
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1539-3755
J9 PHYS REV E
JI Phys. Rev. E
PD SEP
PY 2009
VL 80
IS 3
AR 031903
DI 10.1103/PhysRevE.80.031903
PG 8
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 501LM
UT WOS:000270383400102
PM 19905142
ER
PT J
AU Waisman, EM
Cuneo, ME
AF Waisman, Eduardo M.
Cuneo, M. E.
TI Minimal inductance for axisymmetric transmission lines with radially
dependent anode-cathode gap
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
AB We extend the variational calculus technique for inductance minimization of constant gap axisymmetric transmission lines (TL), introduced by Hurricane [J. Appl. Phys. 95, 4503 (2004)], to the case in which the anode-cathode gap is a linear function of the midgap radius. The full analytic optimal midgap solution curve z(r) yielding minimum inductance is obtained in terms of a single parameter rho(0), determined numerically by imposing that z(r) goes through prescribed end points. The radius of curvature rho(r) of the optimal curve is obtained everywhere the function is defined, even outside of the end point range, and it is shown that a convenient choice is rho(0) = rho(0). The value of the transmission line inductance is calculated by 1D numerical quadrature. A simple numerical technique is introduced for TL with nonlinear radial gap dependence.
C1 [Waisman, Eduardo M.; Cuneo, M. E.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Waisman, EM (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
FU United States Department of Energy's National Nuclear Security
Administration [DE-AC04-94AL85000]
FX We acknowledge helpful conversations with Dr. O. A. Hurricane, Dr. R. W.
Lemke, Dr. C. A. Jennings, and Dr. W. A. Stygar. Sandia is a
multiprogram laboratory operated by Sandia Corporation, a Lockheed
Martin Company, for the United States Department of Energy's National
Nuclear Security Administration under Contract No. DE-AC04-94AL85000.
NR 6
TC 2
Z9 2
U1 1
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1098-4402
J9 PHYS REV SPEC TOP-AC
JI Phys. Rev. Spec. Top.-Accel. Beams
PD SEP
PY 2009
VL 12
IS 9
AR 090401
DI 10.1103/PhysRevSTAB.12.090401
PG 9
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 521NF
UT WOS:000271927700002
ER
PT J
AU Breslau, J
Ferraro, N
Jardin, S
AF Breslau, J.
Ferraro, N.
Jardin, S.
TI Some properties of the M3D-C-1 form of the three-dimensional
magnetohydrodynamics equations
SO PHYSICS OF PLASMAS
LA English
DT Article
ID SIMULATION
AB A set of scalar variables and projection operators for the vector momentum and magnetic field evolution equations is presented that has several unique and desirable properties, making it a preferred system for solving the magnetohydrodynamic equations in a torus with a strong toroidal magnetic field. A "weak form" of these equations is derived that explicitly conserves energy and is suitable for a Galerkin finite element formulation provided the basis elements have C-1 continuity. Systems of reduced equations are discussed, along with their energy conservation properties. An implicit time advance is presented that adds diagonally dominant self-adjoint energy terms to the mass matrix to obtain numerical stability. (C) 2009 American Institute of Physics. [doi:10.1063/1.3224035]
C1 [Breslau, J.; Jardin, S.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
[Ferraro, N.] Gen Atom Co, San Diego, CA 92186 USA.
RP Jardin, S (reprint author), Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
EM jardin@princeton.edu
RI Jardin, Stephen/E-9392-2010;
OI Ferraro, Nathaniel/0000-0002-6348-7827
FU U.S. DOE [DE-AC02-76CH03073]
FX This work was supported by U.S. DOE Contract No. DE-AC02-76CH03073.; The
authors benefited from discussions with Dr. M. Chance, Dr. G. Fu, Dr. S.
Hudson, Dr. D. Keyes, Dr. W. Park, Dr. C. Sovinec, Dr. H. Strauss, and
Dr. L. Sugiyama and from discussions and assistance from Dr. A. Bauer,
Dr. J. Chen, Dr. K. Jansen, Dr. X. Luo, Dr. M. Shephard, and Dr. Y. S.
Li.
NR 15
TC 12
Z9 12
U1 1
U2 6
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD SEP
PY 2009
VL 16
IS 9
AR 092503
DI 10.1063/1.3224035
PG 10
WC Physics, Fluids & Plasmas
SC Physics
GA 501KN
UT WOS:000270380700021
ER
PT J
AU Offermann, DT
Freeman, RR
Van Woerkom, LD
Foord, ME
Hey, D
Key, MH
Mackinnon, AJ
MacPhee, AG
Patel, PK
Ping, Y
Sanchez, JJ
Shen, N
Bartal, T
Beg, FN
Espada, L
Chen, CD
AF Offermann, D. T.
Freeman, R. R.
Van Woerkom, L. D.
Foord, M. E.
Hey, D.
Key, M. H.
Mackinnon, A. J.
MacPhee, A. G.
Patel, P. K.
Ping, Y.
Sanchez, J. J.
Shen, N.
Bartal, T.
Beg, F. N.
Espada, L.
Chen, C. D.
TI Observations of proton beam enhancement due to erbium hydride on gold
foil targets
SO PHYSICS OF PLASMAS
LA English
DT Article
ID FAST IGNITION; LASER-PULSES; SIMULATION; PHOTON; FUSION
AB Recent theoretical work suggests that the conversion efficiency from laser to protons in laser irradiated thin foil experiments increases if the atomic mass of nonhydrogen atoms on the foil rear surface increases. Experiments were performed at the Lawrence Livermore National Laboratory Jupiter Laser Facility to observe the effect of thin foils coated with erbium hydride on the conversion efficiency from laser to protons. Gold foils with and without the rear surface coated with ErH(3) were irradiated using the ultrashort pulse, 40 TW Callisto laser. An argon-ion etching system was used to remove naturally occurring nanometer thick surface layer contaminants from the hydride. With the etcher, gold with ErH(3) showed a 25% increase in the conversion efficiency to protons above 3.4 MeV relative to contaminants, where C(+4) and H(+) were the dominant ion species. No difference in the ion signal was observed without first cleaning the hydrides. Simulations using the hybrid PIC code, LSP, revealed that the increase due to erbium hydride versus contaminants is 37% for protons above 3 MeV. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3212588]
C1 [Offermann, D. T.; Freeman, R. R.; Van Woerkom, L. D.] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA.
[Freeman, R. R.; Bartal, T.; Beg, F. N.] Univ Calif San Diego, Dept Mech & Aerosp Engn, La Jolla, CA 92093 USA.
[Freeman, R. R.] Univ Calif Davis, Dept Appl Sci, Livermore, CA 94550 USA.
[Foord, M. E.; Hey, D.; Key, M. H.; Mackinnon, A. J.; MacPhee, A. G.; Patel, P. K.; Ping, Y.; Sanchez, J. J.; Shen, N.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Espada, L.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Chen, C. D.] MIT, Dept Phys, Cambridge, MA 02139 USA.
RP Offermann, DT (reprint author), Los Alamos Natl Lab, Plasma Phys Grp, POB 1663, Los Alamos, NM 87545 USA.
EM offerman@lanl.gov
RI Patel, Pravesh/E-1400-2011; MacKinnon, Andrew/P-7239-2014;
OI MacKinnon, Andrew/0000-0002-4380-2906; Offermann,
Dustin/0000-0002-6033-4905
FU Lawrence Livermore National Laboratory [DE-AC52-07NA27344]
FX This work was performed under the auspices of the U. S. Department of
Energy by the Lawrence Livermore National Laboratory under Contract No.
DE-AC52-07NA27344.
NR 32
TC 9
Z9 9
U1 0
U2 7
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD SEP
PY 2009
VL 16
IS 9
AR 093113
DI 10.1063/1.3212588
PG 7
WC Physics, Fluids & Plasmas
SC Physics
GA 501KN
UT WOS:000270380700042
ER
PT J
AU Palastro, JP
Williams, EA
Hinkel, DE
Divol, L
Strozzi, DJ
AF Palastro, J. P.
Williams, E. A.
Hinkel, D. E.
Divol, L.
Strozzi, D. J.
TI Kinetic dispersion of Langmuir waves. I. The Langmuir decay instability
SO PHYSICS OF PLASMAS
LA English
DT Article
ID STIMULATED RAMAN-SCATTERING; TURBULENCE; PLASMAS
AB We derive a fully kinetic, three-dimensional dispersion relation for Langmuir waves with a focus on the Langmuir decay instability (LDI). The kinetic dispersion is compared to the standard fluid dispersion found with an equation of state (EOS) closure. The EOS closure fails to capture the intricacies of the nonlinear pressure when high frequency electron plasma waves (EPWs) couple to low frequency ion acoustic waves (IAWs). In particular, we find discrepancies in the k lambda(d) scaling of the LDI growth rate, where k is the wavenumber of the incident EPW and lambda(d) is the Debye length. As a result, the kinetic dispersion relation for LDI results in instability thresholds that can be in excess of twice those predicted by the fluid theory. Both the fluid and kinetic dispersion relations predict a nonlinear frequency shift due to the beating of the pump and scattered EPWs, but again the k lambda(d) scaling of these frequency shifts differ. In addition, the kinetic dispersion predicts a nonlinear reduction in the IAW damping from the three-wave interaction. (C) 2009 American Institute of Physics. [doi:10.1063/1.3234245]
C1 [Palastro, J. P.; Williams, E. A.; Hinkel, D. E.; Divol, L.; Strozzi, D. J.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Palastro, JP (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
OI Strozzi, David/0000-0001-8814-3791
NR 22
TC 6
Z9 6
U1 2
U2 7
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD SEP
PY 2009
VL 16
IS 9
AR 092304
DI 10.1063/1.3234245
PG 12
WC Physics, Fluids & Plasmas
SC Physics
GA 501KN
UT WOS:000270380700014
ER
PT J
AU Park, JM
Murakami, M
Petty, CC
Heidbrink, WW
Osborne, TH
Holcomb, CT
Van Zeeland, MA
Prater, R
Luce, TC
Wade, MR
Austin, ME
Brooks, NH
Budny, RV
Challis, CD
DeBoo, JC
deGrassie, JS
Ferron, JR
Gohil, P
Hobirk, J
Hollmann, EM
Hong, RM
Hyatt, AW
Lohr, J
Lanctot, MJ
Makowski, MA
McCune, DC
Politzer, PA
St John, HE
Suzuki, T
West, WP
Unterberg, EA
Yu, JH
AF Park, J. M.
Murakami, M.
Petty, C. C.
Heidbrink, W. W.
Osborne, T. H.
Holcomb, C. T.
Van Zeeland, M. A.
Prater, R.
Luce, T. C.
Wade, M. R.
Austin, M. E.
Brooks, N. H.
Budny, R. V.
Challis, C. D.
DeBoo, J. C.
deGrassie, J. S.
Ferron, J. R.
Gohil, P.
Hobirk, J.
Hollmann, E. M.
Hong, R. M.
Hyatt, A. W.
Lohr, J.
Lanctot, M. J.
Makowski, M. A.
McCune, D. C.
Politzer, P. A.
St John, H. E.
Suzuki, T.
West, W. P.
Unterberg, E. A.
Yu, J. H.
TI Validation of on- and off-axis neutral beam current drive against
experiment in DIII-D
SO PHYSICS OF PLASMAS
LA English
DT Article
ID TOKAMAK PLASMAS; ARBITRARY COLLISIONALITY; NEOCLASSICAL TRANSPORT;
BOOTSTRAP CURRENT; OPERATION; CONFINEMENT; PROFILES; IONS
AB Neutral beam current drive (NBCD) experiments in DIII-D using vertically shifted plasmas to move the current drive away from the axis have clearly demonstrated robust off-axis NBCD. Time-dependent measurements of magnetic field pitch angles by the motional Stark effect diagnostic are used to obtain the evolution of the poloidal magnetic flux, which indicates a broad off-axis NBCD profile with a peak at about half the plasma minor radius. In most cases, the measured off-axis NBCD profile is consistent with calculations using an orbit-following Monte Carlo code for the beam ion slowing down including finite-orbit effects provided there is no large-scale magnetohydrodynamic activity such as Alfven eigenmodes modes or sawteeth. An alternative analysis method shows good agreement between the measured pitch angles and those from simulations using transport-equilibrium codes. Two-dimensional image of Doppler-shifted fast ion D(alpha) light emitted by neutralized energetic ions shows clear evidence for a hollow profile of beam ion density, consistent with classical beam ion slowing down. The magnitude of off-axis NBCD is sensitive to the alignment of the beam injection relative to the helical pitch of the magnetic field lines. If the signs of toroidal magnetic field and plasma current yield the proper helicity, both measurement and calculation indicate that the efficiency is as good as on-axis NBCD because the increased fraction of trapped electrons reduces the electron shielding of the injected ion current, in contrast with electron current drive schemes where the trapping of electrons degrades the efficiency. The measured off-axis NBCD increases approximately linearly with the injection power, although a modest amount of fast ion diffusion is needed to explain an observed difference in the NBCD profile between the measurement and the calculation at high injection power. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3213614]
C1 [Park, J. M.; Murakami, M.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Petty, C. C.; Osborne, T. H.; Van Zeeland, M. A.; Prater, R.; Luce, T. C.; Wade, M. R.; Brooks, N. H.; DeBoo, J. C.; deGrassie, J. S.; Ferron, J. R.; Gohil, P.; Hong, R. M.; Hyatt, A. W.; Lohr, J.; Politzer, P. A.; St John, H. E.; West, W. P.] Gen Atom Co, San Diego, CA 92186 USA.
[Heidbrink, W. W.] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA.
[Holcomb, C. T.; Makowski, M. A.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Austin, M. E.; McCune, D. C.] Univ Texas Austin, Fus Res Ctr, Austin, TX 78712 USA.
[Budny, R. V.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
[Challis, C. D.] UKAEA Euratom Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England.
[Hobirk, J.] IPP EURATOM Assoc, Max Planck Inst Plasmaphys, D-85748 Garching, Germany.
[Hollmann, E. M.; Yu, J. H.] Univ Calif San Diego, La Jolla, CA 92093 USA.
[Lanctot, M. J.] Columbia Univ, New York, NY 10027 USA.
[Suzuki, T.] Japan Atom Energy Agcy, Naka, Ibaraki 3110193, Japan.
[Unterberg, E. A.] Oak Ridge Inst Sci Educ, Oak Ridge, TN 37831 USA.
RP Park, JM (reprint author), Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA.
RI Unterberg, Ezekial/F-5240-2016; Lanctot, Matthew J/O-4979-2016
OI Unterberg, Ezekial/0000-0003-1353-8865; Lanctot, Matthew
J/0000-0002-7396-3372
FU U. S. Department of Energy [DE-AC05-00OR22725, DE-FC02-04ER54698,
SC-G903402, DE-FG03-97ER54415, DE-AC02-76CH03073, DE-AC52-07NA27344,
DE-FG02-07ER54917, DE-FG02-89ER53297, DE-AC05-06OR23100]
FX This work was supported in part by the U. S. Department of Energy under
Contract Nos. DE-AC05-00OR22725, DE-FC02-04ER54698, SC-G903402,
DE-FG03-97ER54415, DE-AC02-76CH03073, DE-AC52-07NA27344,
DE-FG02-07ER54917, DE-FG02-89ER53297, and DE-AC05-06OR23100.
NR 39
TC 13
Z9 13
U1 0
U2 7
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD SEP
PY 2009
VL 16
IS 9
AR 092508
DI 10.1063/1.3213614
PG 10
WC Physics, Fluids & Plasmas
SC Physics
GA 501KN
UT WOS:000270380700026
ER
PT J
AU Startsev, EA
Davidson, RC
Dorf, M
AF Startsev, Edward A.
Davidson, Ronald C.
Dorf, Mikhail
TI Two-stream stability properties of the return-current layer for intense
ion beam propagation through background plasma
SO PHYSICS OF PLASMAS
LA English
DT Article
ID CHARGED-PARTICLE BEAM; MAGNETIC-FIELD; PULSE NEUTRALIZATION
AB When an ion beam with sharp edge propagates through a background plasma, its current is neutralized by the plasma return current everywhere except at the beam edge over a characteristic transverse distance Delta x(perpendicular to) similar to delta(pe), where delta(pe) = c/omega(pe) is the collisionless skin depth and omega(pe) is the electron plasma frequency. Because the background plasma electrons neutralizing the ion beam current inside the beam are streaming relative to the background plasma electrons outside the beam, the background plasma can support a two-stream surface-mode excitation. Such surface modes have been studied previously assuming complete charge and current neutralization, and have been shown to be strongly unstable. In this paper we study the detailed stability properties of this two-stream surface mode for an electron flow velocity profile self-consistently driven by the ion beam. In particular, it is shown that the self-magnetic field generated inside the unneutralized current layer, which has not been taken into account previously, completely eliminates the instability. (C) 2009 American Institute of Physics. [doi:10.1063/1.3213566]
C1 [Startsev, Edward A.; Davidson, Ronald C.; Dorf, Mikhail] Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Startsev, EA (reprint author), Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA.
FU U. S. Department of Energy
FX This research was supported by the U. S. Department of Energy. It is a
pleasure to acknowledge the benefit of useful discussions with Dr. Igor
Kaganovich and Dr. Hong Qin.
NR 18
TC 5
Z9 5
U1 1
U2 2
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 1070-664X
EI 1089-7674
J9 PHYS PLASMAS
JI Phys. Plasmas
PD SEP
PY 2009
VL 16
IS 9
AR 092101
DI 10.1063/1.3213566
PG 8
WC Physics, Fluids & Plasmas
SC Physics
GA 501KN
UT WOS:000270380700004
ER
PT J
AU Burov, A
AF Burov, Alexey
TI Mermin habitually answers opinions, real and abstract
SO PHYSICS TODAY
LA English
DT Letter
C1 Fermilab Natl Accelerator Lab, Batavia, IL USA.
RP Burov, A (reprint author), Fermilab Natl Accelerator Lab, Batavia, IL USA.
EM burov@fnal.gov
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0031-9228
J9 PHYS TODAY
JI Phys. Today
PD SEP
PY 2009
VL 62
IS 9
BP 12
EP 12
PG 1
WC Physics, Multidisciplinary
SC Physics
GA 493UA
UT WOS:000269762400011
ER
PT J
AU Jacak, B
AF Jacak, Barbara
TI Of gluons, atoms and strings
SO PHYSICS WORLD
LA English
DT Article
C1 [Jacak, Barbara] SUNY Stony Brook, New York, NY USA.
[Jacak, Barbara] Brookhaven Natl Lab, PHENIX Collaborat, Upton, NY 11973 USA.
RP Jacak, B (reprint author), SUNY Stony Brook, New York, NY USA.
EM barbara.jacak@stonybrook.edu
NR 0
TC 0
Z9 0
U1 0
U2 0
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0953-8585
J9 PHYS WORLD
JI Phys. World
PD SEP
PY 2009
VL 22
IS 9
BP 35
EP 37
PG 3
WC Physics, Multidisciplinary
SC Physics
GA 493HO
UT WOS:000269727600048
ER
PT J
AU Chung, HS
Niu, YJ
Browse, J
Howe, GA
AF Chung, Hoo Sun
Niu, Yajie
Browse, John
Howe, Gregg A.
TI Top hits in contemporary JAZ: An update on jasmonate signaling
SO PHYTOCHEMISTRY
LA English
DT Review
DE Jasmonate; COI1; JAZ; Ubiquitin; Alternative splicing; Protein-protein
interaction
ID HELIX TRANSCRIPTION FACTOR; BOX PROTEIN TIR1; GENE-EXPRESSION;
ARABIDOPSIS-THALIANA; UBIQUITIN-LIGASE; METHYL JASMONATE; PLANT-GROWTH;
NICOTIANA-ATTENUATA; REGULATED DEFENSE; AUXIN RECEPTOR
AB The phytohormone jasmonate (JA) regulates a wide range of growth, developmental, and defense-related processes during the plant life cycle. Identification of the W family of proteins that repress JA responses has facilitated rapid progress in understanding how this lipid-derived hormone controls gene expression. Recent analysis of JAZ proteins has provided insight into the nature of the JA receptor, the chemical specificity of signal perception, and cross-talk between JA and other hormone response pathways. Functional diversification of JAZ proteins by alternative splicing, together with the ability of JAZ proteins to homo- and heterodimerize, provide mechanisms to enhance combinatorial diversity and versatility in gene regulation by JA. (c) 2009 Elsevier Ltd. All rights reserved.
C1 [Chung, Hoo Sun; Howe, Gregg A.] Michigan State Univ, DOE Plant Res Lab, Dept Biochem & Mol Biol, E Lansing, MI 48824 USA.
[Niu, Yajie; Browse, John] Washington State Univ, Inst Biol Chem, Pullman, WA 99164 USA.
RP Howe, GA (reprint author), Michigan State Univ, DOE Plant Res Lab, Dept Biochem & Mol Biol, E Lansing, MI 48824 USA.
EM howeg@msu.edu
FU National Institutes of Health [R01GM57795]; US Department of Energy
[DE-FG02-91ER20021, DE-FG02-99ER20323]; US Department of Energy;
Agricultural Research Center at Washington State University
FX Jasmonate research in the Howe lab is supported by the National
Institutes of Health (grant R01GM57795) and the Chemical Sciences,
Geosciences and Biosciences Division, Office of Basic Energy Sciences,
Office of Science, at the US Department of Energy (grant
DE-FG02-91ER20021). Research on jasmonate in the Browse lab is supported
by grant DE-FG02-99ER20323 from the US Department of Energy and by the
Agricultural Research Center at Washington State University.
NR 115
TC 79
Z9 80
U1 4
U2 25
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0031-9422
J9 PHYTOCHEMISTRY
JI Phytochemistry
PD SEP
PY 2009
VL 70
IS 13-14
BP 1547
EP 1559
DI 10.1016/j.phytochem.2009.08.022
PG 13
WC Biochemistry & Molecular Biology; Plant Sciences
SC Biochemistry & Molecular Biology; Plant Sciences
GA 523LF
UT WOS:000272074000008
PM 19800644
ER
PT J
AU DeBolt, S
Scheible, WR
Schrick, K
Auer, M
Beisson, F
Bischoff, V
Bouvier-Nave, P
Carroll, A
Hematy, K
Li, YH
Milne, J
Nair, M
Schaller, H
Zemla, M
Somerville, C
AF DeBolt, Seth
Scheible, Wolf-Ruediger
Schrick, Kathrin
Auer, Manfred
Beisson, Fred
Bischoff, Volker
Bouvier-Nave, Pierrette
Carroll, Andrew
Hematy, Kian
Li, Yonghua
Milne, Jennifer
Nair, Meera
Schaller, Hubert
Zemla, Marcin
Somerville, Chris
TI Mutations in UDP-Glucose:Sterol Glucosyltransferase in Arabidopsis Cause
Transparent Testa Phenotype and Suberization Defect in Seeds
SO PLANT PHYSIOLOGY
LA English
DT Article
ID BETA-D-GLUCOSYLTRANSFERASE; D-GLUCOSYL TRANSFERASE;
PHOSPHOLIPID-DEPENDENCE; PLASMA-MEMBRANE; FUNCTIONAL EXPRESSION;
CHOLESTERYL GLUCOSIDE; COAT ENDOTHELIUM; PICHIA-PASTORIS; LIPID
POLYESTER; BRASSICA-NAPUS
AB In higher plants, the most abundant sterol derivatives are steryl glycosides (SGs) and acyl SGs. Arabidopsis (Arabidopsis thaliana) contains two genes, UGT80A2 and UGT80B1, that encode UDP-Glc: sterol glycosyltransferases, enzymes that catalyze the synthesis of SGs. Lines having mutations in UGT80A2, UGT80B1, or both UGT80A2 and UGT8B1 were identified and characterized. The ugt80A2 lines were viable and exhibited relatively minor effects on plant growth. Conversely, ugt80B1 mutants displayed an array of phenotypes that were pronounced in the embryo and seed. Most notable was the finding that ugt80B1 was allelic to transparent testa15 and displayed a transparent testa phenotype and a reduction in seed size. In addition to the role of UGT80B1 in the deposition of flavanoids, a loss of suberization of the seed was apparent in ugt80B1 by the lack of autofluorescence at the hilum region. Moreover, in ugt80B1, scanning and transmission electron microscopy reveals that the outer integument of the seed coat lost the electron-dense cuticle layer at its surface and displayed altered cell morphology. Gas chromatography coupled with mass spectrometry of lipid polyester monomers confirmed a drastic decrease in aliphatic suberin and cutin-like polymers that was associated with an inability to limit tetrazolium salt uptake. The findings suggest a membrane function for SGs and acyl SGs in trafficking of lipid polyester precursors. An ancillary observation was that cellulose biosynthesis was unaffected in the double mutant, inconsistent with a predicted role for SGs in priming cellulose synthesis.
C1 [DeBolt, Seth; Nair, Meera] Univ Kentucky, Dept Hort, Lexington, KY 40506 USA.
[Scheible, Wolf-Ruediger; Bischoff, Volker] Max Planck Inst Mol Plant Physiol, D-14476 Potsdam, Germany.
[Schrick, Kathrin] Keck Grad Inst Appl Life Sci, Claremont, CA 91711 USA.
[Schrick, Kathrin] CALTECH, Div Biol, Pasadena, CA 91125 USA.
[Schrick, Kathrin] Kansas State Univ, Div Biol, Manhattan, KS 66506 USA.
[Auer, Manfred; Zemla, Marcin] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Beisson, Fred; Li, Yonghua] Univ Bordeaux 2, Membrane Biogenesis Lab, CNRS, UMR 5200, F-33076 Bordeaux, France.
[Bouvier-Nave, Pierrette; Schaller, Hubert] CNRS, Unite Propre Rech 2357, Inst Plant Mol Biol, F-67083 Strasbourg, France.
[Carroll, Andrew] Stanford Univ, Dept Biol, Stanford, CA 94305 USA.
[Milne, Jennifer] Stanford Univ, Global Climate & Energy Project, Stanford, CA 94305 USA.
[Hematy, Kian; Somerville, Chris] Univ Calif Berkeley, Energy Biosci Inst, Berkeley, CA 94720 USA.
RP DeBolt, S (reprint author), Univ Kentucky, Dept Hort, Lexington, KY 40506 USA.
EM sdebo2@email.uky.edu
RI Li, Yonghua/C-7047-2011; Somerville, Christopher/A-4048-2009
OI Li, Yonghua/0000-0003-1064-1816; Somerville,
Christopher/0000-0003-4647-0094
FU Balzan Foundation; U.S. Department of Energy [DE-FG02 09ER16008, NSF:
IOS-0922947]; U.S. Department of Agriculture [2007-35304-18453];
National Science Foundation [MCB-051778]
FX This work was supported by grants from the Balzan Foundation and the
U.S. Department of Energy (grant no. DE-FG02 09ER16008 to C. S. and
grant no. NSF: IOS-0922947 to S. D.). K. S. was supported by the U.S.
Department of Agriculture (grant no. USDA: 2007-35304-18453) and the
National Science Foundation (grant no. NSF: MCB-051778).
NR 42
TC 64
Z9 66
U1 1
U2 25
PU AMER SOC PLANT BIOLOGISTS
PI ROCKVILLE
PA 15501 MONONA DRIVE, ROCKVILLE, MD 20855 USA
SN 0032-0889
J9 PLANT PHYSIOL
JI Plant Physiol.
PD SEP
PY 2009
VL 151
IS 1
BP 78
EP 87
DI 10.1104/pp.109.140582
PG 10
WC Plant Sciences
SC Plant Sciences
GA 490RS
UT WOS:000269522200007
PM 19641030
ER
PT J
AU Rong, R
Li, B
Lynch, RM
Haaland, RE
Murphy, MK
Mulenga, J
Allen, SA
Pinter, A
Shaw, GM
Hunter, E
Robinson, JE
Gnanakaran, S
Derdeyn, CA
AF Rong, Rong
Li, Bing
Lynch, Rebecca M.
Haaland, Richard E.
Murphy, Megan K.
Mulenga, Joseph
Allen, Susan A.
Pinter, Abraham
Shaw, George M.
Hunter, Eric
Robinson, James E.
Gnanakaran, S.
Derdeyn, Cynthia A.
TI Escape from Autologous Neutralizing Antibodies in Acute/Early Subtype C
HIV-1 Infection Requires Multiple Pathways
SO PLOS PATHOGENS
LA English
DT Article
ID IMMUNODEFICIENCY-VIRUS TYPE-1; HUMAN MONOCLONAL-ANTIBODIES;
EXTRACELLULAR ENVELOPE GLYCOPROTEIN; MEMORY B-CELLS; LINKED
GLYCOSYLATION; AIDS PATIENTS; MAJOR TARGET; ENV CLONES; HTLV-III;
IN-VIVO
AB One aim for an HIV vaccine is to elicit neutralizing antibodies (Nab) that can limit replication of genetically diverse viruses and prevent establishment of a new infection. Thus, identifying the strengths and weaknesses of Nab during the early stages of natural infection could prove useful in achieving this goal. Here we demonstrate that viral escape readily occurred despite the development of high titer autologous Nab in two subjects with acute/early subtype C infection. To provide a detailed portrayal of the escape pathways, Nab resistant variants identified at multiple time points were used to create a series of envelope (Env) glycoprotein chimeras and mutants within the background of a corresponding newly transmitted Env. In one subject, Nab escape was driven predominantly by changes in the region of gp120 that extends from the beginning of the V3 domain to the end of the V5 domain (V3V5). However, Nab escape pathways in this subject oscillated and at times required cooperation between V1V2 and the gp41 ectodomain. In the second subject, escape was driven by changes in V1V2. This V1V2-dependent escape pathway was retained over time, and its utility was reflected in the virus's ability to escape from two distinct monoclonal antibodies (Mabs) derived from this same patient via introduction of a single potential N-linked glycosylation site in V2. Spatial representation of the sequence changes in gp120 suggested that selective pressure acted upon the same regions of Env in these two subjects, even though the Env domains that drove escape were different. Together the findings argue that a single mutational pathway is not sufficient to confer escape in early subtype C HIV-1 infection, and support a model in which multiple strategies, including potential glycan shifts, direct alteration of an epitope sequence, and cooperative Env domain conformational masking, are used to evade neutralization.
C1 [Rong, Rong; Lynch, Rebecca M.; Haaland, Richard E.; Murphy, Megan K.; Hunter, Eric; Gnanakaran, S.; Derdeyn, Cynthia A.] Emory Univ, Dept Pathol & Lab Med, Atlanta, GA 30322 USA.
[Rong, Rong; Li, Bing; Lynch, Rebecca M.; Haaland, Richard E.; Murphy, Megan K.; Hunter, Eric; Derdeyn, Cynthia A.] Emory Univ, Yerkes Natl Primate Res Ctr, Emory Vaccine Ctr, Atlanta, GA 30322 USA.
[Mulenga, Joseph; Allen, Susan A.] ZEHRP, Zambia Emory HIV Res Project, Lusaka, Zambia.
[Mulenga, Joseph] Zambia Blood Transfus Serv, Lusaka, Zambia.
[Allen, Susan A.] Emory Univ, Rollins Sch Publ Hlth, Dept Global Hlth, Atlanta, GA 30322 USA.
[Pinter, Abraham] Publ Hlth Res Inst, Newark, NJ USA.
[Pinter, Abraham] Univ Med & Dent New Jersey, New Jersey Med Sch, Newark, NJ 07103 USA.
[Shaw, George M.] Univ Alabama, Dept Med, Birmingham, AL 35294 USA.
[Robinson, James E.] Tulane Univ, Sch Med, Dept Pediat, New Orleans, LA 70112 USA.
Los Alamos Natl Lab, Los Alamos, NM USA.
RP Rong, R (reprint author), Emory Univ, Dept Pathol & Lab Med, Atlanta, GA 30322 USA.
EM cynthia.derdeyn@emory.edu
OI Gnanakaran, S/0000-0002-9368-3044
FU NIH [R01-AI58706, R01-AI51231, U01-AI78410]; Bill and Melinda Gates
Foundation [37874, 38619]
FX This work was funded by NIH (R01-AI58706, R01-AI51231, U01-AI78410), and
the Bill and Melinda Gates Foundation (37874, 38619). The funders had no
role in the study design, data collection and analysis, decision to
publish, or preparation of the manuscript.
NR 54
TC 116
Z9 117
U1 1
U2 7
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA
SN 1553-7366
J9 PLOS PATHOG
JI PLoS Pathog.
PD SEP
PY 2009
VL 5
IS 9
AR e1000594
DI 10.1371/journal.ppat.1000594
PG 17
WC Microbiology; Parasitology; Virology
SC Microbiology; Parasitology; Virology
GA 506VO
UT WOS:000270804900020
PM 19763269
ER
PT J
AU Pugmire, DL
Wetteland, CJ
Duncan, WS
Lakis, RE
Schwartz, DS
AF Pugmire, David L.
Wetteland, Christopher J.
Duncan, Wanda S.
Lakis, Rollin E.
Schwartz, Daniel S.
TI Cross-linking of polytetrafluoroethylene during room-temperature
irradiation
SO POLYMER DEGRADATION AND STABILITY
LA English
DT Article
DE Cross-linking; Differential scanning calorimetry (DSC); FTIR;
Polytetrafluoroethylene PTFE); Radiation
ID ELECTRON-BEAM IRRADIATION; RADIATION-INDUCED PHENOMENA; AVERAGE
MOLECULAR-WEIGHT; POLY(VINYL CHLORIDE); CHEMICAL-COMPOSITION; POLYMERS;
POLY(TETRAFLUOROETHYLENE); DEGRADATION; PTFE; CRYSTALLIZATION
AB Exposure of polytetrafluoroethylene (PTFE) to alpha-radiation was investigated to determine the physical and chemical effects, as well as to compare and contrast the damage mechanisms with other radiation types (beta, gamma, or thermal neutron). A number of techniques were used to investigate the chemical and physical changes in PTFE after exposure to a-radiation. These techniques include: Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and fluorescence spectroscopy. Similar to other radiation types at low doses, the primary damage mechanism for the exposure of PTFE to a-radiation appears to be chain scission. Increased doses result in a change-over of the damage mechanism to cross-linking. This result is not observed for any radiation type other than alpha when irradiation is performed at room temperature. Finally, at high doses, PTFE undergoes mass-loss (via small-fluorocarbon species evolution) and defluorination. The amount and type of damage versus sample depth was also investigated. Other types of radiation yield damage at depths on the order of mm to cm into PTFE due to low linear energy transfer (LET) and the correspondingly large penetration depths. By contrast, the alpha-radiation employed in this study was shown to only induce damage to a depth of approximately 26 mu m, except at very high doses. (c) 2009 Elsevier Ltd. All rights reserved.
C1 [Pugmire, David L.; Wetteland, Christopher J.; Duncan, Wanda S.; Lakis, Rollin E.; Schwartz, Daniel S.] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
RP Pugmire, DL (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, POB 1663, Los Alamos, NM 87545 USA.
EM dpugmire@lanl.gov
OI Lakis, Rollin/0000-0002-7308-6832
NR 34
TC 14
Z9 14
U1 0
U2 12
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0141-3910
J9 POLYM DEGRAD STABIL
JI Polym. Degrad. Stabil.
PD SEP
PY 2009
VL 94
IS 9
BP 1533
EP 1541
DI 10.1016/j.polymdegradstab.2009.04.024
PG 9
WC Polymer Science
SC Polymer Science
GA 485FK
UT WOS:000269106300029
ER
PT J
AU Santer, BD
Taylor, KE
Gleckler, PJ
Bonfils, C
Barnett, TP
Pierce, DW
Wigley, TML
Mears, C
Wentz, FJ
Bruggemann, W
Gillett, NP
Klein, SA
Solomon, S
Stott, PA
Wehner, MF
AF Santer, B. D.
Taylor, K. E.
Gleckler, P. J.
Bonfils, C.
Barnett, T. P.
Pierce, D. W.
Wigley, T. M. L.
Mears, C.
Wentz, F. J.
Brueggemann, W.
Gillett, N. P.
Klein, S. A.
Solomon, S.
Stott, P. A.
Wehner, M. F.
TI Incorporating model quality information in climate change detection and
attribution studies
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Article
DE climate modeling; multimodel database; water vapor
ID OCEAN-ATMOSPHERE MODELS; GLOBAL CLIMATE; TEMPERATURE; SIMULATIONS;
PERFORMANCE; ENSEMBLE; TRENDS
AB In a recent multimodel detection and attribution (D&A) study using the pooled results from 22 different climate models, the simulated "fingerprint" pattern of anthropogenically caused changes in water vapor was identifiable with high statistical confidence in satellite data. Each model received equal weight in the D&A analysis, despite large differences in the skill with which they simulate key aspects of observed climate. Here, we examine whether water vapor D&A results are sensitive to model quality. The "top10" and "bottom 10" models are selected with three different sets of skill measures and two different ranking approaches. The entire D&A analysis is then repeated with each of these different sets of more or less skillful models. Our performance metrics include the ability to simulate the mean state, the annual cycle, and the variability associated with El Nino. We find that estimates of an anthropogenic water vapor fingerprint are insensitive to current model uncertainties, and are governed by basic physical processes that are well-represented in climate models. Because the fingerprint is both robust to current model uncertainties and dissimilar to the dominant noise patterns, our ability to identify an anthropogenic influence on observed multidecadal changes in water vapor is not affected by "screening" based on model quality.
C1 [Santer, B. D.; Taylor, K. E.; Gleckler, P. J.; Bonfils, C.; Klein, S. A.] Lawrence Livermore Natl Lab, Program Climate Model Diag & Intercomparison, Livermore, CA 94550 USA.
[Barnett, T. P.; Pierce, D. W.] Scripps Inst Oceanog, La Jolla, CA 92037 USA.
[Wigley, T. M. L.] Natl Ctr Atmospher Res, Boulder, CO 80307 USA.
[Mears, C.; Wentz, F. J.] Remote Sensing Syst, Santa Rosa, CA 95401 USA.
[Brueggemann, W.] Univ Hamburg, Inst Unternehmensforsch, D-20146 Hamburg, Germany.
[Gillett, N. P.] Univ Victoria, Canadian Ctr Climate Modelling & Anal, Victoria, BC V8W 3V6, Canada.
[Solomon, S.] Natl Ocean & Atmospher Adm Earth Syst, Res Lab, Div Chem Sci, Boulder, CO 80305 USA.
[Stott, P. A.] UK Meteorol Off, Hadley Ctr, Exeter EX1 3PB, Devon, England.
[Wehner, M. F.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Santer, BD (reprint author), Lawrence Livermore Natl Lab, Program Climate Model Diag & Intercomparison, Livermore, CA 94550 USA.
EM santer1@llnl.gov
RI Taylor, Karl/F-7290-2011; Santer, Benjamin/F-9781-2011; Bonfils,
Celine/H-2356-2012; Bindoff, Nathaniel/C-8050-2011; Klein,
Stephen/H-4337-2016; Stott, Peter/N-1228-2016; Manager, CSD
Publications/B-2789-2015
OI Taylor, Karl/0000-0002-6491-2135; Bonfils, Celine/0000-0002-4674-5708;
Bindoff, Nathaniel/0000-0001-5662-9519; Klein,
Stephen/0000-0002-5476-858X; Stott, Peter/0000-0003-4853-7686;
FU Department of Energy and Climate Change/Department for Environment, Food
and Rural Affairs [GA01101]; Ministry of Defense Integrated Climate
[CBC/2B/0417_Annex C]
FX We thank Gabi Hegerl ( University of Edinburgh) and an anonymous
reviewer for constructive comments on the paper, the modeling groups for
providing simulation output for analysis, the Program for Climate Model
Diagnosis and Intercomparison for collecting and archiving these data,
and the World Climate Research Program's Working Group on Coupled
Modeling for organizing the model data analysis activity. The CMIP-3
multimodel dataset was supported by the Office of Science, U. S.
Department of Energy. National Oceanic and Atmospheric Administration
ERSST data were provided by Dick Reynolds at the National Climatic Data
Center. P. A. S. was supported by the joint Department of Energy and
Climate Change/Department for Environment, Food and Rural Affairs
(GA01101) and Ministry of Defense Integrated Climate (CBC/2B/0417_Annex
C) Program.
NR 33
TC 86
Z9 88
U1 1
U2 22
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD SEP 1
PY 2009
VL 106
IS 35
BP 14778
EP 14783
DI 10.1073/pnas.0901736106
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 490EM
UT WOS:000269481000011
PM 19706477
ER
PT J
AU Mori, H
Gjorevski, N
Inman, JL
Bissell, MJ
Nelson, CM
AF Mori, Hidetoshi
Gjorevski, Nikolce
Inman, Jamie L.
Bissell, Mina J.
Nelson, Celeste M.
TI Self-organization of engineered epithelial tubules by differential
cellular motility
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Article
DE differential adhesion; morphogenesis; micropatterning; MT1-MMP; tissue
patterning
ID MEMBRANE-TYPE-1 MATRIX-METALLOPROTEINASE; MAMMARY BRANCHING
MORPHOGENESIS; CARCINOMA-CELLS; 1-MATRIX METALLOPROTEINASE; DISSOCIATED
CELLS; DISTINCT ROLES; I COLLAGEN; MIGRATION; INVASION; MT1-MMP
AB Patterning of developing tissues arises from a number of mechanisms, including cell shape change, cell proliferation, and cell sorting from differential cohesion or tension. Here, we reveal that differences in cell motility can also lead to cell sorting within tissues. Using mosaic engineered mammary epithelial tubules, we found that cells sorted depending on their expression level of the membrane-anchored collagenase matrix metalloproteinase (MMP)-14. These rearrangements were independent of the catalytic activity of MMP14 but absolutely required the hemopexin domain. We describe a signaling cascade downstream of MMP14 through Rho kinase that allows cells to sort within the model tissues. Cell speed and persistence time were enhanced by MMP14 expression, but only the latter motility parameter was required for sorting. These results indicate that differential directional persistence can give rise to patterns within model developing tissues.
C1 [Mori, Hidetoshi; Inman, Jamie L.; Bissell, Mina J.] Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA.
[Gjorevski, Nikolce; Nelson, Celeste M.] Princeton Univ, Dept Chem Engn, Princeton, NJ 08544 USA.
[Gjorevski, Nikolce; Nelson, Celeste M.] Princeton Univ, Dept Mol Biol, Princeton, NJ 08544 USA.
RP Bissell, MJ (reprint author), Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA.
EM mjbissell@lbl.gov; celesten@princeton.edu
FU Department of Energy [DE-AC03-76SF00098, DE-AC02-05CH1123]; National
Institutes of Health (NIH) [CA057621, CA064786, CA112970, CA126552,
GM083997, CA128660]; Department of Defense [W81XWH0510338,
W81XWH0810736, W81XWH0410582]; David & Lucile Packard Foundation;
Burroughs Wellcome Fund; [02-1591]; [MODS0019923]
FX We thank Joe Tien, MarkKrasnow, Stas Shvartsman, and Cyrus Ghajar for
illuminating discussions; andMotoharuSeiki for transgenic mice. This
work was supported in part by Department of Energy Grants
DE-AC03-76SF00098 and DE-AC02-05CH1123 and a Distinguished Fellow Award
(to M. J. B.); by National Institutes of Health (NIH) Grants CA057621,
CA064786, CA112970, and CA126552 (to M. J. B.); NIH Grants GM083997 and
CA128660 (to C. M. N.); by Department of Defense Grants W81XWH0510338
and W81XWH0810736 (to M. J. B.); Department of Defense Grant
W81XWH0410582 (to C. M. N.); by Susan G. Komen for the Cure Grants
02-1591 (to H. M.) and MODS0019923 (to C. M. N.); and by the David &
Lucile Packard Foundation (C. M. N.). C. M. N. holds a Career Award at
the Scientific Interface from the Burroughs Wellcome Fund.
NR 60
TC 46
Z9 47
U1 1
U2 5
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0027-8424
J9 P NATL ACAD SCI USA
JI Proc. Natl. Acad. Sci. U. S. A.
PD SEP 1
PY 2009
VL 106
IS 35
BP 14890
EP 14895
DI 10.1073/pnas.0901269106
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 490EM
UT WOS:000269481000030
PM 19706461
ER
PT J
AU Ito, J
Taylor, NL
Castleden, I
Weckwerth, W
Millar, AH
Heazlewood, JL
AF Ito, Jun
Taylor, Nicolas L.
Castleden, Ian
Weckwerth, Wolfram
Millar, A. Harvey
Heazlewood, Joshua L.
TI A survey of the Arabidopsis thaliana mitochondrial phosphoproteome
SO PROTEOMICS
LA English
DT Article
DE Arabidopsis; Mitochondria; Phosphoproteome; Phosphorylation; Plant
proteomics
ID PYRUVATE-DEHYDROGENASE COMPLEX; PROTEIN-PHOSPHORYLATION; TYROSINE
PHOSPHORYLATION; SUCCINATE-DEHYDROGENASE; PLANT-MITOCHONDRIA;
MASS-SPECTROMETRY; SUBUNITS; PURIFICATION; HISTIDINE; MEMBRANE
AB Plant mitochondria play central roles in cellular energy production, metabolism and stress responses. Recent phosphoproteomic studies in mammalian and yeast mitochondria have presented evidence indicating that protein phosphorylation is a likely regulatory mechanism across a broad range of important mitochondrial processes. This study investigated protein phosphorylation in purified mitochondria from cell suspensions of the model plant Arabidopsis thaliana using affinity enrichment and proteomic tools. Eighteen putative phospho-proteins consisting of mitochondrial metabolic enzymes, HSPs, a protease and several proteins of unknown function were detected on 2-DE separations of Arabidopsis mitochondrial proteins and affinity-enriched phosphoproteins using the Pro-Q Diamond phospho-specific in-gel dye. Comparisons with mitochondrial phosphoproteomes of yeast and mouse indicate that these three species share few validated phosphoproteins. Phosphorylation sites for seven of the eighteen mitochondrial proteins were characterized by titanium dioxide enrichment and MS/MS. In the process, 71 phosphopeptides from Arabidopsis proteins which are not present in mitochondria but found as contaminants in various types of mitochondrial preparations were also identified, indicating the low level of phosphorylation of mitochondrial components compared with other cellular components in Arabidopsis. Information gained from this study provides a better understanding of protein phosphorylation at both the subcellular and the cellular level in Arabidopsis.
C1 [Ito, Jun; Taylor, Nicolas L.; Millar, A. Harvey; Heazlewood, Joshua L.] Univ Western Australia, Australian Res Council Ctr Excellence Plant Energ, Crawley, WA, Australia.
[Ito, Jun; Millar, A. Harvey; Heazlewood, Joshua L.] Univ Western Australia, Sch Biomed Biomol & Chem Sci, Crawley, WA, Australia.
[Castleden, Ian] Univ Western Australia, Ctr Excellence Computat Syst Biol, Crawley, WA, Australia.
[Weckwerth, Wolfram; Heazlewood, Joshua L.] Max Planck Inst Mol Plant Physiol, Potsdam, Germany.
RP Heazlewood, JL (reprint author), Lawrence Berkeley Natl Lab, Joint BioEnergy Inst, 1 Cyclotron Rd MS 978-4466, Berkeley, CA 94720 USA.
EM jlheazlewood@lbl.gov
RI Heazlewood, Joshua/A-2554-2008; Weckwerth, Wolfram/G-5811-2010; Millar,
A. Harvey/A-5452-2008; Taylor, Nicolas/A-5731-2008
OI Heazlewood, Joshua/0000-0002-2080-3826; Millar, A.
Harvey/0000-0001-9679-1473; Taylor, Nicolas/0000-0003-2004-5217
FU Australian Research Council (ARC); Resources of the Government of
Western Australia
FX This work was funded through grants from the Australian Research Council
(ARC) Centre of Excellence Programme and the Department of Industry and
Resources of the Government of Western Australia. Support was also
provided by the Alexander von Humboldt Foundation through a Research
Fellowship to JLH and by the Australian Research Council through an ARC
Postdoctoral Fellowship to JLH, an ARC Australian Professorial
Fellowship to AHM and an ARC Postdoctoral Fellowship to NLT and an
Australian Postgraduate Award to JI.
NR 46
TC 52
Z9 52
U1 1
U2 10
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY
SN 1615-9853
J9 PROTEOMICS
JI Proteomics
PD SEP
PY 2009
VL 9
IS 17
BP 4229
EP 4240
DI 10.1002/pmic.200900064
PG 12
WC Biochemical Research Methods; Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 501JA
UT WOS:000270376600009
PM 19688752
ER
PT J
AU Restrepo, JM
Rael, RC
Hyman, JM
AF Restrepo, Juan M.
Rael, Rosalyn C.
Hyman, James M.
TI Modeling the influence of polls on elections: a population dynamics
approach
SO PUBLIC CHOICE
LA English
DT Article
DE Voting; Polling; Sequential voting; Landslide; Head-to-head
ID BANDWAGON; BEHAVIOR; VOTER; MEDIA
AB We propose a population dynamics model for quantifying the effects of polling data on the outcome of multi-party elections decided by a majority-rule voting process. We divide the population into two groups: committed voters impervious to polling data, and susceptible voters whose decision to vote is influenced by data, depending on its reliability. This population-based approach to modeling the process sidesteps the problem of upscaling models based upon the choices made by individuals. We find releasing poll data is not advantageous to leading candidates, but it can be exploited by those closely trailing. The analysis identifies the particular type of voting impetus at play in different stages of an election and could help strategists optimize their influence on susceptible voters.
C1 [Restrepo, Juan M.; Rael, Rosalyn C.] Univ Arizona, Program Appl Math, Tucson, AZ 85721 USA.
[Restrepo, Juan M.] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA.
[Hyman, James M.] Los Alamos Natl Lab, Appl Math Grp, Los Alamos, NM 87545 USA.
RP Restrepo, JM (reprint author), Univ Arizona, Program Appl Math, Tucson, AZ 85721 USA.
EM restrepo@math.arizona.edu
OI Restrepo, Juan/0000-0003-2609-2882
NR 12
TC 3
Z9 3
U1 0
U2 4
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0048-5829
J9 PUBLIC CHOICE
JI Public Choice
PD SEP
PY 2009
VL 140
IS 3-4
BP 395
EP 420
DI 10.1007/s11127-009-9427-x
PG 26
WC Economics; Political Science
SC Business & Economics; Government & Law
GA 474KC
UT WOS:000268281200008
ER
PT J
AU Kessler, R
Bernstein, JP
Cinabro, D
Dilday, B
Frieman, JA
Jha, S
Kuhlmann, S
Miknaitis, G
Sako, M
Taylor, M
Vanderplas, J
AF Kessler, Richard
Bernstein, Joseph P.
Cinabro, David
Dilday, Benjamin
Frieman, Joshua A.
Jha, Saurabh
Kuhlmann, Stephen
Miknaitis, Gajus
Sako, Masao
Taylor, Matt
Vanderplas, Jake
TI SNANA: A Public Software Package for Supernova Analysis
SO PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
LA English
DT Article
ID IA SUPERNOVAE; K-CORRECTIONS; DARK ENERGY; LIGHT; CONSTRAINTS;
MAGNITUDES
AB We describe a general analysis package for supernova (SN) light curves, called SNANA, that contains a simulation, a light-curve fitter, and a cosmology fitter. The software is designed with the primary goal of using SNe Ia as distance indicators for the determination of cosmological parameters, but it can also be used to study efficiencies for analyses of SN rates, estimate contamination from non-Ia SNe, and optimize future surveys. Several SN models are available within the same software architecture, allowing technical features such as K-corrections to be consistently used among multiple models, and thus making it easier to make detailed comparisons between models. New and improved light-curve models can be easily added. The software works with arbitrary surveys and telescopes and has already been used by several collaborations, leading to more robust and easy-to-use code. This software is not intended as a final product release, but rather it is designed to undergo continual improvements from the community as more is learned about SNe. We give an overview of the SNANA capabilities, as well as some of its limitations.
C1 [Kessler, Richard; Frieman, Joshua A.] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA.
[Kessler, Richard; Frieman, Joshua A.] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
[Bernstein, Joseph P.; Kuhlmann, Stephen] Argonne Natl Lab, Lemont, IL 60437 USA.
[Cinabro, David; Taylor, Matt] Wayne State Univ, Dept Phys, Detroit, MI 48202 USA.
[Dilday, Benjamin; Jha, Saurabh] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA.
[Frieman, Joshua A.; Miknaitis, Gajus] Fermilab Natl Accelerator Lab, Ctr Particle Astrophys, Batavia, IL 60510 USA.
[Miknaitis, Gajus] Ctr Neighborhood Technol, Chicago, IL 60647 USA.
[Sako, Masao] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA.
[Vanderplas, Jake] Univ Washington, Dept Astron, Seattle, WA 98195 USA.
RP Kessler, R (reprint author), Univ Chicago, Dept Astron & Astrophys, 5640 S Ellis Ave, Chicago, IL 60637 USA.
EM kessler@kicp.uchicago.edu
OI VanderPlas, Jacob/0000-0002-9623-3401
NR 17
TC 82
Z9 82
U1 0
U2 2
PU UNIV CHICAGO PRESS
PI CHICAGO
PA 1427 E 60TH ST, CHICAGO, IL 60637-2954 USA
SN 0004-6280
J9 PUBL ASTRON SOC PAC
JI Publ. Astron. Soc. Pac.
PD SEP
PY 2009
VL 121
IS 883
BP 1028
EP 1035
PG 8
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 486WV
UT WOS:000269232300008
ER
PT J
AU Jacoby, WR
Hartmann, O
Wallner, H
Smilde, PL
Burger, S
Sjoberg, LE
Erlingsson, S
Wolf, D
Klemann, V
Sasgen, I
AF Jacoby, Wolfgang R.
Hartmann, Oliver
Wallner, Herbert
Smilde, Peter L.
Buerger, Stefan
Sjoberg, Lars E.
Erlingsson, Sigurdur
Wolf, Detlef
Klemann, Volker
Sasgen, Ingo
TI Temporal Gravity Variations near Shrinking Vatnajokull Ice Cap, Iceland
SO PURE AND APPLIED GEOPHYSICS
LA English
DT Article; Proceedings Paper
CT 2nd Workshop on Deformation and Gravity Change - Indicators of Isostasy,
Tectonics, Volcanism and Climate Change
CY MAR 27-30, 2007
CL Lanzarote, SPAIN
SP Int Assoc Geodesy
DE Iceland; temporal gravity change; GPS; plume; viscosity
ID GLACIAL-ISOSTATIC-ADJUSTMENT; MANTLE VISCOSITY; VISCOUS-FLUID; SURFACE
LOAD; LAND UPLIFT; GPS; RHEOLOGY; PROFILE; BENEATH; MOTION
AB Repeated gravity measurements were carried out from 1991 until 1999 at sites SE of Vatnajokull, Iceland, to estimate the mass flow and deformation accompanying the shrinking of the ice cap. Published GPS data show an uplift of about 13 +/- A 5 mm/a near the ice margin. A gravity decrease of -2 +/- A 1 mu Gal/a relative to the Hofn base station, was observed for the same sites. Control measurements at the Hofn station showed a gravity decrease of -2 +/- A 0.5 A mu Gal/a relative to the station RVIK 5473 at Reykjavik (about 250 km from Hofn). This is compatible, as a Bouguer effect, with a 10 +/- A 3 mm/a uplift rate of the IGS point at Hofn and an uplift rate of similar to 20 mm/a near the ice margin. Although the derived gravity change rates at individual sites have large uncertainties, the ensemble of the rates varies systematically and significantly with distance from the ice. The relationship between gravity and elevation changes and the shrinking ice mass is modelled as response to the loading history. The GPS data can be explained by 1-D modelling (i.e., an earth model with a 15-km thick elastic lithosphere and a 7 center dot 10(17) Pa center dot s asthenosphere viscosity), but not the gravity data. Based on 2-D modelling, the gravity data favour a low-viscosity plume in the form of a cylinder of 80 km radius and 10(17) to 10(18) Pa center dot s viscosity below a 6 km-thick elastic lid, embedded in a layered PREM-type earth, although the elevation data are less well explained by this model. Strain-porosity-hydrology effects are likely to enhance the magnitude of the gravity changes, but need verification by drilling. More accurate data may resolve the discrepancies or suggest improved models.
C1 [Jacoby, Wolfgang R.; Hartmann, Oliver; Wallner, Herbert; Smilde, Peter L.; Buerger, Stefan] Johannes Gutenberg Univ Mainz, Inst Geowissensch, D-59099 Mainz, Germany.
[Sjoberg, Lars E.] Royal Inst Technol, Div Geodesy, SE-10044 Stockholm, Sweden.
[Erlingsson, Sigurdur] Univ Iceland, IS-107 Reykjavik, Iceland.
[Wolf, Detlef; Klemann, Volker; Sasgen, Ingo] GFZ Gedram Res Ctr Geosci, Helmholtz Ctr Potsdam, Potsdam, Germany.
[Wolf, Detlef] Univ Stuttgart, Geodet Inst, D-70174 Stuttgart, Germany.
[Hartmann, Oliver] Free Univ Berlin, D-12249 Berlin, Germany.
[Buerger, Stefan] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Jacoby, WR (reprint author), Johannes Gutenberg Univ Mainz, Inst Geowissensch, D-59099 Mainz, Germany.
EM jacoby@uni-mainz.de; wallner@uni-mainz.de; sjoberg@infra.kth.se;
sigger@hi.is; dasca@gfz-potsdam.de; volkerk@gfz-potsdam.de;
sasgen@gfz-potsdam.de
RI Klemann, Volker/H-3660-2013; Erlingsson, Sigurdur/L-5262-2015
OI Klemann, Volker/0000-0002-8342-8947; Erlingsson,
Sigurdur/0000-0002-4256-3034
NR 37
TC 3
Z9 3
U1 0
U2 5
PU SPRINGER BASEL AG
PI BASEL
PA PICASSOPLATZ 4, BASEL, 4052, SWITZERLAND
SN 0033-4553
EI 1420-9136
J9 PURE APPL GEOPHYS
JI Pure Appl. Geophys.
PD SEP
PY 2009
VL 166
IS 8-9
BP 1283
EP 1302
DI 10.1007/s00024-009-0499-9
PG 20
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 485JW
UT WOS:000269118200007
ER
PT J
AU Abraham, AA
Robinson, TJ
Anderson-Cook, CM
AF Abraham, Anu A.
Robinson, Timothy J.
Anderson-Cook, Christine M.
TI A Graphical Approach for Assessing Optimal Operating Conditions in
Robust Design
SO QUALITY TECHNOLOGY AND QUANTITATIVE MANAGEMENT
LA English
DT Article
DE Graphical approach; MSE; noise factors; robust parameter design;
statistical process control
AB The determination of optimal operating conditions in robust parameter design often involves the use of an objective function such as the mean squared error of the response along with graphical overlays of the estimated process mean and variance functions. Existing graphical methods in robust design have limitations when more than two control factors are involved, since visualizing the entire control design space becomes difficult with many control factors. Here we present a new graphical technique for assessing optimal operating conditions which is based upon the estimated proportion of items within specification limits. The new plots offer users the ability to compare competing sets of optimal operating conditions, to assess possible assumption violations regarding the distribution of the noise factors, and the opportunity to observe the shape of the response distribution as it relates to stated specification limits. An example from manufacturing serves as the basis for illustration.
C1 [Abraham, Anu A.] HSBC, Credit Policy Risk, Las Vegas, NV USA.
[Robinson, Timothy J.] Univ Wyoming, Dept Stat, Laramie, WY 82071 USA.
[Anderson-Cook, Christine M.] Los Alamos Natl Lab, Stat Sci Grp, Los Alamos, NM USA.
RP Abraham, AA (reprint author), HSBC, Credit Policy Risk, Las Vegas, NV USA.
NR 14
TC 3
Z9 3
U1 0
U2 0
PU NCTU-NATIONAL CHIAO TUNG UNIV PRESS
PI TAICHUNG
PA NO 100, WENHWA RD, TAICHUNG, 40724 ROC, TAIWAN
SN 1684-3703
J9 QUAL TECHNOL QUANT M
JI Qual. Technol. Quant. Manag.
PD SEP
PY 2009
VL 6
IS 3
BP 235
EP 253
PG 19
WC Engineering, Industrial; Operations Research & Management Science;
Statistics & Probability
SC Engineering; Operations Research & Management Science; Mathematics
GA V18HX
UT WOS:000207997000004
ER
PT J
AU Piepel, GF
Cooley, SK
AF Piepel, Greg F.
Cooley, Scott K.
TI Automated Method for Reducing Scheffe Linear Mixture Experiment Models
SO QUALITY TECHNOLOGY AND QUANTITATIVE MANAGEMENT
LA English
DT Article
DE Backward reduction of mixture experiment models; combine mixture
components; eliminate mixture components; linear mixture experiment
model; mixture component effects; model reduction
ID COMPONENTS; TERMS
AB In developing models for mixture experiments, the first step typically involves fitting a complete Scheffe linear mixture (SLM) model using all components varied in the experiment. It next may be desirable to reduce a complete SLM model by (i) eliminating (in a way appropriate for mixture experiments) components that have negligible effects and (ii) combining components that have similar effects. Standard methods for reducing non-mixture linear models, such as t-tests and variable-selection techniques, are not applicable for reducing SLM models. In the mixture experiment literature, a time-consuming, manual iterative approach has been used to reduce SLM models.
Automatic and semi-automatic versions of a method for backward reduction of SLM models are proposed to eliminate components (in a way appropriate for mixture experiments) or combine components. The method uses associated partial F-tests to guide the model reduction steps. The method allows for specifying (i) components that must remain in the model, (ii) components that can (or cannot) be combined, and (iii) the stopping criterion. The method is illustrated using examples from the literature.
C1 [Piepel, Greg F.; Cooley, Scott K.] Battelle Pacific NW Div, Stat & Sensor Analyt Grp, Richland, WA USA.
RP Piepel, GF (reprint author), Battelle Pacific NW Div, Stat & Sensor Analyt Grp, Richland, WA USA.
EM greg.piepel@pnl.gov; scott.cooley@pnl.gov
FU [24590-101-TSA-W000-00004]
FX A portion of the work in this article was conducted as part of the Waste
Treatment Plant Support Program at Battelle-Pacific Northwest Division
(PNWD) in Richland, WA. The work was performed under Contract Number
24590-101-TSA-W000-00004 for Bechtel National, Inc., the lead contractor
on the Waste Treatment and Immobilization Plant at the Hanford Site near
Richland, WA. We thank Brett Amidan and Brent Pulsipher for performing
the PNWD-required technical and management reviews of the manuscript. We
also thank the two anonymous referees for their comments and
suggestions, which led to improvements in the article. Finally, we
acknowledge the efforts of John Peterson and Dennis Lin, the guest
editors for this special issue of QTQM.
NR 15
TC 3
Z9 3
U1 2
U2 6
PU NCTU-NATIONAL CHIAO TUNG UNIV PRESS
PI TAICHUNG
PA NO 100, WENHWA RD, TAICHUNG, 40724 ROC, TAIWAN
SN 1684-3703
EI 1811-4857
J9 QUAL TECHNOL QUANT M
JI Qual. Technol. Quant. Manag.
PD SEP
PY 2009
VL 6
IS 3
BP 255
EP 270
PG 16
WC Engineering, Industrial; Operations Research & Management Science;
Statistics & Probability
SC Engineering; Operations Research & Management Science; Mathematics
GA V18HX
UT WOS:000207997000005
ER
PT J
AU Jones, MC
Peteet, DM
Kurdyla, D
Guilderson, T
AF Jones, Miriam C.
Peteet, Dorothy M.
Kurdyla, Dorothy
Guilderson, Thomas
TI Climate and vegetation history from a 14,000-year peatland record, Kenai
Peninsula, Alaska
SO QUATERNARY RESEARCH
LA English
DT Article
DE Climate history; Alaska; pollen; macrofossils; Kenai Peninsula; Younger
Dryas
ID YOUNGER-DRYAS; SOUTHWESTERN ALASKA; NORTH PACIFIC; THERMAL MAXIMUM;
LATE-QUATERNARY; EARLY-HOLOCENE; ARCTIC TUNDRA; YR BP; LAKE; BERINGIA
AB Analysis of pollen, spores, macrofossils, and lithology of an AMS C-14-dated core from a subarctic fell on the Kenai Peninsula, Alaska reveals changes in vegetation and climate beginning 14,200 cal yr BP. Betula expansion and contraction of herb tundra vegetation characterize the Younger Dryas on the Kenai, suggesting increased winter snowfall concurrent with cool, sunny summers. Remarkable Polypodiaceae (fern) abundance between 11,500 and 8500 cal yr BP implies a significant change in climate. Enhanced peat preservation and the occurrence of wet meadow species suggest high moisture from 11,500 to 10,700 cal yr BP, in contrast to drier conditions in southeastern Alaska; this pattern may indicate an intensification and repositioning of the Aleutian Low (AL). Drier conditions oil the Kenai Peninsula from 10,700 to 8500 call yr BP may signify a weaker AL, but elevated fern abundance may have been sustained by high seasonality with substantial snowfall and enhanced glacial melt. Decreased insolation-induced seasonality resulted in climatic cooling after 8500 cal yr BP, with increased humidity from 8000 to 5000 cal yr BP. A dry interval punctuated by volcanic activity occurred between 5000 and 3500 call yr BP, followed by cool, moist climate, coincident with Neoglaciation. Tsuga mertensiana expanded after similar to 1500 cal yr BP in response to the shift to cooler conditions. (C) 2009 University of Washington. Published by Elsevier Inc. All rights reserved.
C1 [Jones, Miriam C.; Peteet, Dorothy M.] Columbia Univ, Dept Earth & Environm Sci, Lamont Doherty Earth Observ, Palisades, NY 10964 USA.
[Peteet, Dorothy M.] NASA, Goddard Inst Space Studies, New York, NY 10025 USA.
[Kurdyla, Dorothy; Guilderson, Thomas] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Jones, Miriam C.] Lehigh Univ, Dept Earth & Environm Sci, Bethlehem, PA 18015 USA.
RP Jones, MC (reprint author), Columbia Univ, Dept Earth & Environm Sci, Lamont Doherty Earth Observ, 61 Route 9W, Palisades, NY 10964 USA.
EM mcj208@lehigh.edu
FU LDEO Climate Center; NASA/GISS; National Science Foundation
[OCE06-475574]
FX LDEO Climate Center and NASA/GISS provided financial support, and sample
material used in this project was stored in the LDEO Sample Repository,
supported by the National Science Foundation (Grant OCE06-475574). We
thank Edward Berg at the Kenai National Wildlife Refuge and Dick Reger
for help in the field and for useful advice and discussions, and Scott
Anderson, Darrell Kaufman, and Feng Sheng Hu for valuable discussion of
the YD interval on the Kenai Peninsula. Field assistance was generously
donated by Robert Ruffner and members of the Kenai Watershed Forum, and
Kirsten Sauer and Alex Kirnicki. Substantial improvements to the
manuscript were made thanks to reviewer and editor comments (Tom Ager,
Nancy Bigelow, and Wyatt Oswald). This is LDEO contribution number 7267.
NR 50
TC 20
Z9 20
U1 1
U2 22
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0033-5894
EI 1096-0287
J9 QUATERNARY RES
JI Quat. Res.
PD SEP
PY 2009
VL 72
IS 2
BP 207
EP 217
DI 10.1016/j.yqres.2009.04.002
PG 11
WC Geography, Physical; Geosciences, Multidisciplinary
SC Physical Geography; Geology
GA 486UA
UT WOS:000269223500006
ER
PT J
AU Groenewold, GS
Leavitt, CM
Dain, RP
Oomens, J
Steill, JD
van Stipdonk, MJ
AF Groenewold, Gary S.
Leavitt, Christopher M.
Dain, Ryan P.
Oomens, Jos
Steill, Jeffrey D.
van Stipdonk, Michael J.
TI Infrared spectrum of potassium-cationized triethylphosphate generated
using tandem mass spectrometry and infrared multiple photon dissociation
SO RAPID COMMUNICATIONS IN MASS SPECTROMETRY
LA English
DT Article
ID GAS-PHASE; VIBRATIONAL SPECTROSCOPY; ANISOTROPIC DIELECTRICS; ACTINIDE
CHEMISTRY; COMPLEXES; NITRATE; ION; MOLECULES; PHOSPHATE; ANIONS
AB Tandem mass spectrometry and wavelength-selective infrared photodissociation were used to generate an infrared spectrum of gas-phase triethylphosphate cationized by attachment of K(+). Prominent absorptions were observed in the region of 900 to 1300 cm(-1) that are characteristic of phosphate P=O and P-O-R stretches. The relative positions and intensities of the IR absorptions were reproduced well by density functional theory (DFT) calculations performed using the B3LYP functional and the 6-31+G(d), 6-311+G(d,p) and 6-311++G(3df,2pd) basis sets. Because of good correspondence between experiment and theory for the cation, DFT was then used to generate a theoretical spectrum for neutral triethylphosphate, which in turn accurately reproduces the IR spectrum of the neat liquid when solvent effects are included in the calculations. Copyright (C) 2009 John Wiley & Sons, Ltd.
C1 [Groenewold, Gary S.] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
[Leavitt, Christopher M.; Dain, Ryan P.; van Stipdonk, Michael J.] Wichita State Univ, Dept Chem, Wichita, KS 67208 USA.
[Oomens, Jos; Steill, Jeffrey D.] FOM Inst Plasma Phys Rijnhuizen, Nieuwegein, Netherlands.
RP Groenewold, GS (reprint author), Idaho Natl Lab, Idaho Falls, ID 83415 USA.
EM gary.groenewold@inl.gov
RI Oomens, Jos/F-9691-2015
FU U.S. National Science Foundation [CAREER-0239800]; Fairmount College of
Liberal Arts and Sciences of Wichita State University.; NSF
[EIA-0216178, EPS-0236913]; State of Kansas and HIPECC; Idaho National
Laboratory, DOE Idaho Operations Office [DE AC07 05ID14517]; National
High Field FT'-ICR Facility [CHE-9909502]; National High Magnetic Field
Laboratory, Tallahassee, FL, USA
FX Work by CML, RPD and MVS is supported in part by a grant from the U.S.
National Science Foundation (NSF grant CAREER-0239800) and the Fairmount
College of Liberal Arts and Sciences of Wichita State University. DFT
calculations were performed at Wichita State University using resources
of the High-performance Computing Center (HIPECC), a facility supported
by the NSF under Grants EIA-0216178 and EPS-0236913 and matching Support
from the State of Kansas and HIPECC. Work by GSG (under the IN L LDRD
Program) and the use of the INL High-Performance Computing Cluster are
supported by the U.S. Department of Energy, Idaho National Laboratory,
DOE Idaho Operations Office Contract DE AC07 05ID14517. JO and JS are
supported by the Nederlandse Organisatie voor Wetenschappelijk Onderzoek
(NWO). Construction and shipping of the FT-lCR-MS instrument were made
possible through funding from the National High Field FT'-ICR Facility
(grant CHE-9909502) at the National High Magnetic Field Laboratory,
Tallahassee, FL, USA. The excellent support by Dr B. Redlich and others
of the FELIX staff is gratefully acknowledged.
NR 35
TC 4
Z9 4
U1 0
U2 6
PU JOHN WILEY & SONS LTD
PI CHICHESTER
PA THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND
SN 0951-4198
J9 RAPID COMMUN MASS SP
JI Rapid Commun. Mass Spectrom.
PD SEP
PY 2009
VL 23
IS 17
BP 2706
EP 2710
DI 10.1002/rcm.4162
PG 5
WC Chemistry, Analytical; Spectroscopy
SC Chemistry; Spectroscopy
GA 487NB
UT WOS:000269280300015
PM 19630032
ER
PT J
AU Di Vittorio, AV
AF Di Vittorio, Alan V.
TI Enhancing a leaf radiative transfer model to estimate concentrations and
in vivo specific absorption coefficients of total carotenoids and
chlorophylls a and b from single-needle reflectance and transmittance
SO REMOTE SENSING OF ENVIRONMENT
LA English
DT Article
DE AVIRIS; Canopy; Carotenoid; Chlorophyll; Hyperspectral; Leaf; LIBERTY;
Model; Needle; Optical; Pigment; Pine; PROSPECT; Radiative transfer;
Remote sensing; Vegetation
ID OPTICAL-PROPERTIES MODEL; HYPERSPECTRAL DATA; PROSPECT; FOREST;
PIGMENTS; SPECTRA; FLUORESCENCE; VEGETATION; INVERSION; INDEXES
AB The relative concentrations of different pigments within a leaf have significant physiological and spectral consequences. Photosynthesis, light use efficiency, mass and energy exchange, and stress response are dependent on relationships among an ensemble of pigments. This ensemble also determines the visible characteristics of a leaf, which can be measured remotely and used to quantify leaf biochemistry and structure. But current remote sensing approaches are limited in their ability to resolve individual pigments. This paper focuses on the incorporation of three pigments-chlorophyll a, chlorophyll b, and total carotenoids-into the LIBERTY leaf radiative transfer model to better understand relationships between leaf biochemical, biophysical, and spectral properties.
Pinus ponderosa and Pinus jeffreyi needles were collected from three sites in the California Sierra Nevada. Hemispheric single-leaf visible reflectance and transmittance and concentrations of chlorophylls a and b and total carotenoids of fresh needles were measured. These data were input to the enhanced LIBERTY model to estimate optical and biochemical properties of pine needles. The enhanced model successfully estimated reflectance (RMSE = 0.0255, BIAS = 0.00477, RMS%E = 16.7%), had variable success estimating transmittance (RMSE = 0.0442, BIAS = 0.0294, RMS%E = 181%), and generated very good estimates of carotenoid concentrations (RMSE = 2.48 mu g/cm(2), BIAS = 0.143 mu g/cm(2), RMS%E = 20.4%), good estimates of chlorophyll a concentrations (RMSE = 10.7 mu g/cm(2), BIAS = -0.992 mu g/cm(2), RMS%E = 21.1%), and fair estimates of chlorophyll b concentrations (RMSE = 7.49 mu g/cm(2), BIAS = -2.12 mu g/cm(2), RMS%E = 43.7%). Overall root mean squared errors of reflectance, transmittance, and pigment concentration estimates were lower for the three-pigment model than for the single-pigment model. The algorithm to estimate three in vivo specific absorption coefficients is robust, although estimated values are distorted by inconsistencies in model biophysics. The capacity to invert the model from single-leaf reflectance and transmittance was added to the model so it could be coupled with vegetation canopy models to estimate canopy biochemistry from remotely sensed data. (C) 2009 Elsevier Inc. All rights reserved.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Energy Biosci Inst, Berkeley, CA 94720 USA.
RP Di Vittorio, AV (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Energy Biosci Inst, 1 Cyclotron Rd,Mail Stop 90-1116, Berkeley, CA 94720 USA.
EM adivi@nature.berkeley.edu
RI Di Vittorio, Alan/M-5325-2013
OI Di Vittorio, Alan/0000-0002-8139-4640
NR 33
TC 17
Z9 17
U1 1
U2 22
PU ELSEVIER SCIENCE INC
PI NEW YORK
PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
SN 0034-4257
J9 REMOTE SENS ENVIRON
JI Remote Sens. Environ.
PD SEP
PY 2009
VL 113
IS 9
BP 1948
EP 1966
DI 10.1016/j.rse.2009.05.002
PG 19
WC Environmental Sciences; Remote Sensing; Imaging Science & Photographic
Technology
SC Environmental Sciences & Ecology; Remote Sensing; Imaging Science &
Photographic Technology
GA 478RG
UT WOS:000268605200013
ER
PT J
AU Lanting, T
Dobbs, M
Spieler, H
Lee, AT
Yamamoto, Y
AF Lanting, T.
Dobbs, M.
Spieler, H.
Lee, A. T.
Yamamoto, Y.
TI Linearized superconducting quantum interference device array for high
bandwidth frequency-domain readout multiplexing
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID STRONG ELECTROTHERMAL FEEDBACK; BOLOMETER; SENSORS
AB We have designed and demonstrated a superconducting quantum interference device (SQUID) array linearized with cryogenic feedback. To achieve the necessary loop gain, a 300-element series array SQUID is constructed from three monolithic 100-element series arrays. A feedback resistor completes the loop from the SQUID output to the input coil. The short feedback path of this linearized SQUID array (LISA) allows for a substantially larger flux-locked loop bandwidth as compared to a SQUID flux-locked loop that includes a room temperature amplifier. The bandwidth, linearity, noise performance, and 3 Phi(0) dynamic range of the LISA are sufficient for its use in our target application: the multiplexed readout of transition-edge sensor bolometers. (C) 2009 American Institute of Physics. [doi:10.1063/1.3216808]
C1 [Lanting, T.; Dobbs, M.; Yamamoto, Y.] McGill Univ, Dept Phys, Montreal, PQ H2T 2Y8, Canada.
[Lanting, T.] D Wave Syst Inc, Burnaby, BC V5C 6G9, Canada.
[Spieler, H.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Lee, A. T.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
RP Lanting, T (reprint author), McGill Univ, Dept Phys, Montreal, PQ H2T 2Y8, Canada.
EM tlanting@dwavesys.com
FU Natural Sciences and Engineering Research Council; Canadian Institute
for Advanced Research; Canadian Foundation for Innovation; Canada
Research Chairs program; U.S. Department of Energy [DE-AC0205CH11231]
FX We thank J. Clarke, D. Doering, and P. Richards for useful discussions.
We also thank LBNL engineers John Joseph and Chinh Vu for their work on
the room temperature electronics. The McGill authors acknowledge funding
from the Natural Sciences and Engineering Research Council, Canadian
Institute for Advanced Research, Canadian Foundation for Innovation, and
Canada Research Chairs program. Work at LBNL is supported by the
Director, Office of Science, Office of High Energy and Nuclear Physics,
of the U.S. Department of Energy under Contract No. DE-AC0205CH11231.
NR 20
TC 3
Z9 3
U1 0
U2 1
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD SEP
PY 2009
VL 80
IS 9
AR 094501
DI 10.1063/1.3216808
PG 5
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 501KG
UT WOS:000270380000027
PM 19791952
ER
PT J
AU Milathianaki, D
Hawreliak, J
McNaney, JM
El-Dasher, BS
Saculla, MD
Swift, DC
Lorenzana, HE
Ditmire, T
AF Milathianaki, D.
Hawreliak, J.
McNaney, J. M.
El-Dasher, B. S.
Saculla, M. D.
Swift, D. C.
Lorenzana, H. E.
Ditmire, T.
TI A Seeman-Bohlin geometry for high-resolution nanosecond x-ray
diffraction measurements from shocked polycrystalline and amorphous
materials
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID HIGH-PRESSURE; OMEGA LASER; COMPRESSION; ASTROPHYSICS; CRYSTALS;
PHYSICS; MATTER; WAVES
AB We report on a focusing x-ray diffraction geometry capable of high-resolution in situ lattice probing from dynamically loaded polycrystalline and amorphous materials. The Seeman-Bohlin-type camera presented here is ideally suited for time-resolved x-ray diffraction measurements performed on high energy multibeam laser platforms. Diffraction from several lattice planes of ablatively shock-loaded 25 mu m thick Cu foils was recorded on a focusing circle of diameter D = 100 mm with exceptional angular resolution limited only by the spectral broadening of the x-ray source. Excellent agreement was found between the density measured using x-ray diffraction and that inferred from Doppler velocimetry and the known shock Hugoniot of Cu. In addition, x-ray diffraction signal was captured from an amorphous material under static conditions. (C) 2009 American Institute of Physics. [doi:10.1063/1.3230647]
C1 [Milathianaki, D.; Hawreliak, J.; McNaney, J. M.; El-Dasher, B. S.; Saculla, M. D.; Swift, D. C.; Lorenzana, H. E.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Milathianaki, D.; Ditmire, T.] Univ Texas Austin, Austin, TX 78712 USA.
RP Milathianaki, D (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
EM despina@physics.utexas.edu
RI McNaney, James/F-5258-2013
FU U.S. Department of Energy, Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]; LLNL LDRD [06-SI-004]
FX The authors would like to thank the engineering staff at the University
of Texas at Austin, especially Allan Schroeder, as well as the JANUS
laser facility team for their commitment and support in this study. This
work was performed under the auspices of the U.S. Department of Energy
by Lawrence Livermore National Laboratory under Contract No.
DE-AC52-07NA27344. Funding was provided by the LLNL LDRD program under
Project No. 06-SI-004.
NR 38
TC 4
Z9 4
U1 1
U2 9
PU AMER INST PHYSICS
PI MELVILLE
PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
SN 0034-6748
EI 1089-7623
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD SEP
PY 2009
VL 80
IS 9
AR 093904
DI 10.1063/1.3230647
PG 7
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 501KG
UT WOS:000270380000025
PM 19791950
ER
PT J
AU Kim, S
Rahman, T
Senesac, LR
Davison, BH
Thundat, T
AF Kim, Seonghwan
Rahman, Touhidur
Senesac, Larry R.
Davison, Brian H.
Thundat, Thomas
TI Piezoresistive Cantilever Array Sensor for Consolidated Bioprocess
Monitoring
SO SCANNING
LA English
DT Article
DE piezoresistive cantilever; 4-mercaptophenylboronic acid;
polyethyleneglycol-thiol; glucose; ethanol
ID SELF-ASSEMBLED MONOLAYERS; SURFACE STRESS; MICROCANTILEVER SENSORS;
READ-OUT; SENSITIVITY; RECOGNITION; ADSORPTION; BIOSENSORS; ADHESION
AB Cellulolytic microbes occur in diverse natural niches and are being screened for industrial modification and utility. A microbe for consolidated bioprocessing (CBP) development can rapidly degrade pure cellulose and then ferment the resulting sugars into fuels. To identify and screen for novel microbes for CBP, we have developed a piezoresistive cantilever array sensor which is capable of simultaneous monitoring of glucose and ethanol concentration changes in a phosphate buffer solution. 4-mercaptophenylboronic acid and polyethyleneglycol-thiol are employed to functionalize each piezoresistive cantilever for glucose and ethanol sensing, respectively. Successful concentration measurements of glucose and ethanol with minimal interferences are obtained with our cantilever array sensor. SCANNING 31: 204-210, 2009. (C) 2009 Wiley Periodicals, Inc.
C1 [Kim, Seonghwan; Rahman, Touhidur; Senesac, Larry R.; Davison, Brian H.; Thundat, Thomas] Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN 37831 USA.
RP Thundat, T (reprint author), Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN 37831 USA.
EM thundattg@ornl.gov
RI Kim, Seonghwan/J-6884-2012; Davison, Brian/D-7617-2013
OI Kim, Seonghwan/0000-0001-7735-3582; Davison, Brian/0000-0002-7408-3609
FU DOE ORNL BioEnergy Science Center; Office of Biological and
Environmental Research in the DOE Office of Science
FX This work is supported by the DOE ORNL BioEnergy Science Center. The
BioEnergy Science Center is a U.S. Department of Energy Bioenergy
Research Center supported by the Office of Biological and Environmental
Research in the DOE Office of Science.
NR 28
TC 10
Z9 10
U1 0
U2 9
PU JOHN WILEY & SONS INC
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN, NJ 07030 USA
SN 0161-0457
J9 SCANNING
JI Scanning
PD SEP-OCT
PY 2009
VL 31
IS 5
BP 204
EP 210
DI 10.1002/sca.20159
PG 7
WC Instruments & Instrumentation; Microscopy
SC Instruments & Instrumentation; Microscopy
GA 556JQ
UT WOS:000274587300004
PM 20027646
ER
PT J
AU Johnson, BE
Esser, BK
Whyte, DC
Ganguli, PM
Austin, CM
Hunt, JR
AF Johnson, Bryce E.
Esser, Bradley K.
Whyte, Dyan C.
Ganguli, Priya M.
Austin, Carrie M.
Hunt, James R.
TI Mercury accumulation and attenuation at a rapidly forming delta with a
point source of mining waste
SO SCIENCE OF THE TOTAL ENVIRONMENT
LA English
DT Article
DE Sediments; Mercury; Methylmercury; Contaminant accumulation;
Bioaccumulation; Biota; Natural attenuation; Tomales Bay
ID SAN-FRANCISCO BAY; TOMALES BAY; METHYL MERCURY; ESTUARINE SEDIMENTS;
NITROGEN-FIXATION; MICROBIAL MATS; UNITED-STATES; TIDAL MARSH; SPORT
FISH; CALIFORNIA
AB The Walker Creek intertidal delta of Tomales Bay, California is impacted by a former mercury mine within the watershed. Eleven short sediment cores (10 cm length) collected from the delta found monomethylmercury (MMHg) concentrations ranging from 0.3 to 11.4 ng/g (dry wt.), with lower concentrations occurring at the vegetated marsh and upstream channel locations. Algal mats common to the delta's sediment surface had MMHg concentrations ranging from 7.5 to 31.5 ng/g. and the top 1 cm of sediment directly under the mats had two times greater MMHg concentrations compared to adjacent locations without algal covering. Spatial trends in resident biota reflect enhanced MMHg uptake at the delta compared to other bay locations. Eighteen sediment cores, 1 to 2 m deep, collected from the 1.2 km(2) delta provide an estimate of a total mercury (Hg) inventory of 2500 +/- 500 kg. Sediment Hg concentrations ranged from pre-mining background conditions of approximately 0.1 mu g/g to a post-mining maximum of 5 mu g/g. Sediment accumulation rates were determined from three sediment cores using measured differences of (137)Cs activity. We estimate a pre-mining Hg accumulation of less than 20 kg/yr, and a period of maximum Hg accumulation in the 1970s and 1980s with loading rates greater than 50 kg/yr, corresponding to the failure of a tailings dam at the mine site. At the time of sampling (2003) over 40 kg/yr of Hg was still accumulating at the delta, indicating limited recovery. We attribute observed spatial evolution of elevated Hg levels to ongoing inputs and sediment reworking, and estimate the inventory of the anthropogenic fraction of total Hg to be at least 1500 +/- 300 kg. We suggest ongoing sediment inputs and methylation at the deltaic surface support enhanced mercury levels for resident biota and transfer to higher trophic levels throughout the Bay. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Johnson, Bryce E.; Hunt, James R.] Univ Calif Berkeley, Berkeley, CA 94720 USA.
[Esser, Bradley K.] Lawrence Livermore Natl Lab, Div Chem Sci, Livermore, CA 94550 USA.
[Whyte, Dyan C.; Ganguli, Priya M.; Austin, Carrie M.] Calif Reg Water Qual Control Board, Oakland, CA 94612 USA.
RP Johnson, BE (reprint author), Univ Calif Berkeley, Berkeley, CA 94720 USA.
EM bjohnson@ce.berkeley.edu
RI Esser, Bradley/G-4283-2010;
OI Esser, Bradley/0000-0002-3219-4298; Ganguli, Priya/0000-0002-5965-0230
FU SWRCB [00-229-120]; NIEHS [NIH P42 ES04705]; University of California
Toxic Substances Research and Teaching Program
FX This work was initiated by the California Environmental Protection
Agency, San Francisco Bay Regional Water Quality Control Board and
supported by SWRCB No. 00-229-120. This work was also supported by the
NIEHS Superfund Basic Research Program (NIH P42 ES04705) and the
University of California Toxic Substances Research and Teaching Program.
We thank Mark Mertz at TEG Oceanographic Services for sediment cores
collected from Walker Creek Delta. Matt Brennan, Jon Fram, and Dave
Ralston collected bathymetry data and were extremely helpful during the
sampling and initial modeling work for the long cores. We thank Everett
Guthrie, and Cindy Conrado at Lawrence Livermore National Laboratory for
contributions to the gamma analysis of sediment samples. We thank Lynn
Suer at U.S. EPA for her work on collecting and identifying
invertebrates, Karen Taberski, Richard Looker and Jill Marshall at the
Water Quality Board for all their help in the mud, and Gary Ichikawa and
staff at Moss Landing Marine Lab who helped with biota deployment,
collection, and analyses.
NR 58
TC 6
Z9 6
U1 0
U2 7
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0048-9697
J9 SCI TOTAL ENVIRON
JI Sci. Total Environ.
PD SEP 1
PY 2009
VL 407
IS 18
BP 5056
EP 5070
DI 10.1016/j.scitotenv.2009.05.025
PG 15
WC Environmental Sciences
SC Environmental Sciences & Ecology
GA 486VJ
UT WOS:000269228000012
PM 19539980
ER
PT J
AU Woo, W
Feng, Z
Wang, XL
Hubbard, CR
AF Woo, W.
Feng, Z.
Wang, X. -L.
Hubbard, C. R.
TI Neutron diffraction measurements of time-dependent residual stresses
generated by severe thermomechanical deformation
SO SCRIPTA MATERIALIA
LA English
DT Article
DE Neutron diffraction; Residual stress; Friction stir welding;
Time-dependent; Aluminum alloy
ID FRICTION STIR WELDS; 6061-T6 ALUMINUM-ALLOY
AB Residual stresses were generated by severe thermomechanical deformation in an aluminum alloy plate. The evolution of the residual stresses during natural aging was investigated by neutron diffraction up to 10,000 h. A data reduction method was developed to eliminate microstructure influences (solute variations) on the lattice spacing changes, thereby allowing the determination of the long-range macroscopic residual stresses. The residual stress decreased (similar to 25 MPa) with time due to the microstructural modification within the deformed region during natural aging. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 [Woo, W.; Feng, Z.; Hubbard, C. R.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
[Woo, W.] Korea Atom Energy Res Inst, Div Neutron Sci, Taejon 305353, South Korea.
[Wang, X. -L.] Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37830 USA.
RP Feng, Z (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
EM fengz@ornl.gov
RI Wang, Xun-Li/C-9636-2010; Feng, Zhili/H-9382-2012;
OI Wang, Xun-Li/0000-0003-4060-8777; Feng, Zhili/0000-0001-6573-7933; WOO,
Wanchuck/0000-0003-0350-5357
FU US Department of Energy [DE-AC05-00OR22725]; Korean government
FX The research was sponsored by the Assistant Secretary for Energy
Efficiency and Renewable Energy, Vehicle Technologies Program, as part
of the High Temperature Materials Laboratory User Program, Oak Ridge
National Laboratory, managed by UT-Battle, LLC, for the US Department of
Energy under contract number DE-AC05-00OR22725. W.W. is supported by the
Nuclear Research and Development Program of the Korea Science and
Engineering Foundation funded by the Korean government. X.L.W.
acknowledges the support from the Office of Basic Energy Sciences, US
Department of Energy under Contract DE-AC05-00OR22725 with UT-Battelle,
LLC. The authors would like to thank M.I. Ripley, H. Choo, A. Frederick,
E.A. Kenik, W.B. Bailey and Y. Yamamoto for their help.
NR 17
TC 10
Z9 10
U1 1
U2 12
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1359-6462
J9 SCRIPTA MATER
JI Scr. Mater.
PD SEP
PY 2009
VL 61
IS 6
BP 624
EP 627
DI 10.1016/j.scriptamat.2009.05.040
PG 4
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 475PK
UT WOS:000268371900018
ER
PT J
AU Kolda, TG
Bader, BW
AF Kolda, Tamara G.
Bader, Brett W.
TI Tensor Decompositions and Applications
SO SIAM REVIEW
LA English
DT Review
DE tensor decompositions; multiway arrays; multilinear algebra; parallel
factors (PARAFAC); canonical decomposition (CANDECOMP); higher-order
principal components analysis (Tucker); higher-order singular value
decomposition (HOSVD)
ID PARALLEL FACTOR-ANALYSIS; SINGULAR-VALUE DECOMPOSITION; LEAST-SQUARES
ALGORITHMS; INDEPENDENT COMPONENT ANALYSIS; HIGHER-ORDER TENSOR;
SIMULTANEOUS MATRIX DIAGONALIZATION; 3-WAY PRINCIPAL COMPONENT;
EVENT-RELATED POTENTIALS; 3-MODE FACTOR-ANALYSIS; DS-CDMA SIGNALS
AB This survey provides an overview of higher-order tensor decompositions, their applications, and available software. A tensor is a multidimensional or N-way array. Decompositions of higher-order tensors (i.e., N-way arrays with N >= 3) have applications in psychometrics, chemometrics, signal processing, numerical linear algebra, computer vision, numerical analysis, data mining, neuroscience, graph analysis, and elsewhere. Two particular tensor decompositions can be considered to be higher-order extensions of the matrix singular value decomposition: CANDECOMP/PARAFAC (CP) decomposes a tensor as a sum of rank-one tensors, and the Tucker decomposition is a higher-order form of principal component analysis. There are many other tensor decompositions, including INDSCAL, PARAFAC2, CANDELINC, DEDICOM, and PARATUCK2 as well as nonnegative variants of all of the above. The N-way Toolbox, Tensor Toolbox, and Multilinear Engine are examples of software packages for working with tensors.
C1 [Kolda, Tamara G.] Sandia Natl Labs, Math Informat & Decis Sci Dept, Livermore, CA 94551 USA.
[Bader, Brett W.] Sandia Natl Labs, Dept Informat & Comp Sci, Albuquerque, NM 87185 USA.
RP Kolda, TG (reprint author), Sandia Natl Labs, Math Informat & Decis Sci Dept, Livermore, CA 94551 USA.
EM tgkolda@sandia.gov; bwbader@sandia.gov
RI Kolda, Tamara/B-1628-2009
OI Kolda, Tamara/0000-0003-4176-2493
FU Sandia National Laboratories; United States Department of Energy
[DE-AC04-94AL85000]
FX This work was funded by Sandia National Laboratories, a multiprogram
laboratory operated by Sandia Corporation, a Lockheed Martin Company,
for the United States Department of Energy's National Nuclear Security
Administration under Contract DE-AC04-94AL85000. The U.S. Government
retains a nonexclusive, royalty-free license to publish or reproduce the
published form of this contribution, or allow others to do so, for U.S.
Government purposes. Copyright is owned by SIAM to the extent not
limited by these rights.
NR 244
TC 1305
Z9 1357
U1 28
U2 190
PU SIAM PUBLICATIONS
PI PHILADELPHIA
PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA
SN 0036-1445
J9 SIAM REV
JI SIAM Rev.
PD SEP
PY 2009
VL 51
IS 3
BP 455
EP 500
DI 10.1137/07070111X
PG 46
WC Mathematics, Applied
SC Mathematics
GA 489IX
UT WOS:000269414900001
ER
PT J
AU Vasekar, PS
Dhere, NG
Moutinho, H
AF Vasekar, Parag S.
Dhere, Neelkanth G.
Moutinho, Helio
TI Development of CIGS2 solar cells with lower absorber thickness
SO SOLAR ENERGY
LA English
DT Article
DE CIGS2; Absorber thickness; Thin-film solar cells
ID PERFORMANCE
AB The availability and cost of materials, especially of indium can be a limiting factor as chalcopyrite based thin-film solar cells advance in their commercialization. The required amounts of metals can be lowered by using thinner films. When the thickness of the film decreases, there is possibility of remaining only in the small grain region because the coalescence of grains does not have an opportunity to enhance the grain size to the maximum. Solar cell performance in smaller grain chalcopyrite absorber deteriorates due to larger fraction of grain boundaries. Efforts are being made to reduce the thickness while maintaining the comparable performance. This work presents a study of preparation, morphology and other material properties of CIGS2 absorber layers with decreasing thicknesses up to 1.2 mu m and its correlation with the device performance. Encouraging results were obtained demonstrating that reasonable solar cell efficiencies (>10%) can be achieved even for thinner CIGS2 thin-film solar cells. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Vasekar, Parag S.; Dhere, Neelkanth G.] Univ Cent Florida, Florida Solar Energy Ctr, Cocoa, FL 32922 USA.
[Moutinho, Helio] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Vasekar, PS (reprint author), Univ Cent Florida, Florida Solar Energy Ctr, 1679 Clearlake Rd, Cocoa, FL 32922 USA.
EM psvasekar@yahoo.com
FU NREL [XXL-5-44205-08]
FX This research was supported by NREL Contract No. XXL-5-44205-08 through
the Thin-Film Partnership Program. Authors greatly appreciate the
support of Materials Characterization Facility at UCF for providing
support in the materials characterization. Authors thank Dr. Tom
Moriarty and his group at NREL for carrying out the current-voltage
measurements.
NR 14
TC 8
Z9 8
U1 0
U2 3
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0038-092X
J9 SOL ENERGY
JI Sol. Energy
PD SEP
PY 2009
VL 83
IS 9
BP 1566
EP 1570
DI 10.1016/j.solener.2009.05.005
PG 5
WC Energy & Fuels
SC Energy & Fuels
GA 487QF
UT WOS:000269289200016
ER
PT J
AU Rao, A
Krishnan, S
Sanjeev, G
Siddappa, K
Ullal, HS
Wu, XZ
AF Rao, Asha
Krishnan, Sheeja
Sanjeev, Ganesh
Siddappa, K.
Ullal, Harin S.
Wu, Xuanzhi
TI 8 MeV electron irradiation studies on electrical characteristics of
Cu(In,Ga)Se-2 solar cells
SO SOLAR ENERGY MATERIALS AND SOLAR CELLS
LA English
DT Article
DE CIGS; Solar cell; Electron irradiation; Current-voltage characteristics;
Ideality factor; Series resistance; Capacitance-frequency; Efficiency
ID PROTON IRRADIATION; HIGH-ENERGY; EFFICIENCY; TRANSPORT; DIODES
AB Cu(In,Ga)Se-2 (CIGS) solar cells are gaining considerable interest due to their high optical absorption coefficient and adjustable band gap, which enables them to achieve high conversion efficiency and also present many promising applications in space power systems. In this paper we report the results of the effect of temperature and 8 MeV electron irradiation on the electrical characteristics of ZnO/CdS/Cu(In,Ga)Se-2/Mo polycrystalline thin-film solar cells under forward and reverse bias studied in the temperature range 270-315 K. The solar cells were subjected to 8 MeV electron irradiation front the Microtron accelerator and were exposed to graded doses of electrons up to 75 kGy. I-V characteristics of the cells under dark and AM 1.5 illumination condition were studied before and after the irradiation. Capacitance measurements were also carried out at various frequencies before and after irradiation. In the measured temperature range, the dark current contribution is due to the generation-recombination of the minority carriers in the depletion region. The ideality factor is found to decrease with increase in temperature. It seems that electron irradiation has not altered the dark current conduction mechanism significantly. The effect of electron irradiation on the solar cell parameters such as fill factor (FF), conversion efficiency (eta), saturation current (I-o), short Circuit Current (I-sc), open circuit voltage (V-oc), and ideality factor (n) was studied. They were found to be stable up to 75 kGy of electron dose as only small changes were observed in the solar cell parameters. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Rao, Asha] Mangalore Inst Technol & Engn, Dept Phys, Mangalore 574227, India.
[Krishnan, Sheeja; Sanjeev, Ganesh] Mangalore Univ, Dept Phys, Microtron Ctr, Mangalagangothri 574199, Karnataka, India.
[Siddappa, K.] JSS Fdn Sci & Soc, Bangalore 560085, Karnataka, India.
[Ullal, Harin S.; Wu, Xuanzhi] Natl Renewable Energy Lab, Natl Ctr Photovolta, Golden, CO 80401 USA.
RP Rao, A (reprint author), Mangalore Inst Technol & Engn, Dept Phys, Mangalore 574227, India.
EM asha_rao_i@yahoo.com
NR 24
TC 4
Z9 4
U1 1
U2 17
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0927-0248
J9 SOL ENERG MAT SOL C
JI Sol. Energy Mater. Sol. Cells
PD SEP
PY 2009
VL 93
IS 9
BP 1618
EP 1623
DI 10.1016/j.solmat.2009.04.021
PG 6
WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied
SC Energy & Fuels; Materials Science; Physics
GA 475PV
UT WOS:000268373200024
ER
PT J
AU Ocko, M
Zonja, S
Stubicar, M
Stubicar, N
Bauer, ED
Sarrao, JL
AF Ocko, M.
Zonja, S.
Stubicar, M.
Stubicar, N.
Bauer, E. D.
Sarrao, J. L.
TI Why YbxLu1-xAl3 and YbxY1-xInCu4 have quite opposite concentration
dependence of the Vickers microhardness
SO SOLID STATE COMMUNICATIONS
LA English
DT Article
DE Single crystals of YbxLu1-xAl3; Micro-indentation hardness testing
AB We report on the results of the Vickers microhardness measurements of the YbxLu1-xAl3 alloy system. It is shown that the Mott-Nabarro theory is not able to explain the concentration dependence of the measured microhardness, as is possible in some similar Kondo alloy systems containing Ce and U. Interestingly enough, while microhardness increases with the Yb content in YbxLu1-xAl3 it decreases with Yb in the YbxY1-xInCu4 alloy system. Therefore, we try to explain the experimental data, taking into account the difference of the electronic structure and the change of the electronic structure with alloying in both systems. (C) 2009 Elsevier Ltd. All rights reserved.
C1 [Ocko, M.] Univ Zagreb, Inst Phys, Zagreb 10002, Croatia.
[Zonja, S.] Univ Zagreb, Fac Elect Engn & Comp, Zagreb 10000, Croatia.
[Stubicar, M.; Stubicar, N.] Univ Zagreb, Fac Sci, Zagreb 10002, Croatia.
[Bauer, E. D.; Sarrao, J. L.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Ocko, M (reprint author), Univ Zagreb, Inst Phys, Bijenicka C 46, Zagreb 10002, Croatia.
EM ocko@ifs.hr
RI Bauer, Eric/D-7212-2011;
OI Bauer, Eric/0000-0003-0017-1937
FU Croatian Ministry for Science and Technology [035-0352827-2841]
FX The work was done within the projects 035-0352827-2841 of the Croatian
Ministry for Science and Technology.
NR 19
TC 0
Z9 0
U1 2
U2 5
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0038-1098
J9 SOLID STATE COMMUN
JI Solid State Commun.
PD SEP
PY 2009
VL 149
IS 33-34
BP 1313
EP 1316
DI 10.1016/j.ssc.2009.05.037
PG 4
WC Physics, Condensed Matter
SC Physics
GA 480PK
UT WOS:000268748200001
ER
PT J
AU Polyanskii, AA
Lee, PJ
Jewell, MC
Barzi, E
Turrioni, D
Zlobin, AV
Larbalestier, DC
AF Polyanskii, A. A.
Lee, P. J.
Jewell, M. C.
Barzi, E.
Turrioni, D.
Zlobin, A. V.
Larbalestier, D. C.
TI Evidence for highly localized damage in internal tin and powder-in-tube
Nb3Sn strands rolled before reaction obtained from coupled
magneto-optical imaging and confocal laser scanning microscopy
SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY
LA English
DT Article
ID FIELD ACCELERATOR MAGNETS; RUTHERFORD CABLE; PERFORMANCE; CONDUCTORS;
SUPERCONDUCTORS; DEFORMATION; GRADIENTS
AB Nb3Sn strands for high-current, high-field magnets must be cabled before reaction while the conductor is still composed of ductile components. Even though still in the ductile, deformable state, significant damage can occur in this step, which expresses itself by inhomogeneous A15 formation, Sn leakage or even worse effects during later reaction. In this study, we simulate cabling damage by rolling recent high performance powder-in-tube (PIT) and internal tin (IT) strands in controlled increments, applying standard Nb3Sn reaction heat treatments, and then examining the local changes using magneto-optical imaging (MOI), scanning electron microscopy (SEM) and confocal laser scanning microscopy (CLSM). These combined characterizations allow any local damage to the filament architecture to be made clear. MOI directly reveals the local variation of superconductivity while CLSM is extremely sensitive in revealing Sn leakage beyond the diffusion barrier into the stabilizing Cu. These techniques reveal a markedly different response to deformation by the PIT and IT strands. The study demonstrates that these tools can provide a local, thorough, and detailed view of how strands degrade and thus complement more complex extracted strand studies.
C1 [Polyanskii, A. A.; Lee, P. J.; Jewell, M. C.; Larbalestier, D. C.] Florida State Univ, Natl High Magnet Field Lab, Ctr Appl Superconduct, Tallahassee, FL 32310 USA.
[Barzi, E.; Turrioni, D.; Zlobin, A. V.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Polyanskii, AA (reprint author), Florida State Univ, Natl High Magnet Field Lab, Ctr Appl Superconduct, Tallahassee, FL 32310 USA.
RI Larbalestier, David/B-2277-2008;
OI Larbalestier, David/0000-0001-7098-7208; Lee, Peter/0000-0002-8849-8995
FU US Department of Energy, Office of High Energy Physics
[DE-FG02-07ER41451, DE-AC02-07CH11359]; ITER [ITER-CT-07-012]; State of
Florida
FX The authors wish to thank Jianyi Jiang, Van Griffin, and Natanette Craig
for measurement assistance. This work was supported by the US Department
of Energy, Office of High Energy Physics under grant DE-FG02-07ER41451,
ITER contract (ITER-CT-07-012) and the State of Florida and also the
Fermi Research Alliance, LLC, under contract No. DE-AC02-07CH11359 with
the US Department of Energy Fermi National Accelerator Laboratory.
NR 24
TC 8
Z9 8
U1 0
U2 5
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0953-2048
J9 SUPERCOND SCI TECH
JI Supercond. Sci. Technol.
PD SEP
PY 2009
VL 22
IS 9
AR 095008
DI 10.1088/0953-2048/22/9/095008
PG 13
WC Physics, Applied; Physics, Condensed Matter
SC Physics
GA 498AZ
UT WOS:000270108800009
ER
PT J
AU Deskins, NA
Mei, DH
Dupuis, M
AF Deskins, N. Aaron
Mei, Donghai
Dupuis, Michel
TI Adsorption and diffusion of a single Pt atom on gamma-Al2O3 surfaces
SO SURFACE SCIENCE
LA English
DT Article
DE Aluminum oxide; Ab initio quantum chemical methods and calculations;
Monte Carlo simulations; Atom-solid interactions; Semiconducting
surfaces
ID GAMMA-ALUMINA SURFACES; ELASTIC POLARIZABLE ENVIRONMENT; INITIO
MOLECULAR-DYNAMICS; TOTAL-ENERGY CALCULATIONS; LEWIS-ACID SITES; WAVE
BASIS-SET; AB-INITIO; ALPHA-AL2O3(0001) SURFACE; ULTRASOFT
PSEUDOPOTENTIALS; PD ATOMS
AB Motivated to better understand the interactions between Pt and gamma-Al2O3 support, the adsorption and diffusion of a single Pt atom on gamma-Al2O3 was studied using density functional theory. Two different surface models with atoms of various coordination (3-5) were used, one derived from a defected spinel structure, and another derived from the dehydration of boehmite (AlOOH). Adsorption energies are similar for the two surfaces, about -2 eV for the most stable sites, and involve Pt binding to surface O atoms. An unusually strong trapping geometry whereby Pt moves into the surface was identified over the boehmite-derived surface. In all cases the surface transfers similar to 0.2-0.3 e(-) to the Pt atom. The bonding is explained as being a combination of charge transfer between the surface and Pt atom, polarization of the metal atom, and some weak covalent bonding. The similarity of the two surfaces is attributed to the similar local environments of the surface atoms, as corroborated by geometry analysis, density of states, and Bader charge analysis. Calculated activation barriers (0.3-0.5 eV) for the defected spinel surface indicate fast diffusion and a kinetic Monte Carlo model incorporated these barriers to determine exact diffusion rates and behavior. The kinetic Monte Carlo results indicate that at low temperatures (<500 K) the Pt atom can become trapped at certain surface regions, which could explain why the sintering process is hindered at low temperature. Finally we modeled the adsorption of Pt on hydrated surfaces and found adsorption to be weaker due to steric repulsion and/or decreased electron-donating ability of the surface. (C) 2009 Elsevier B.V. All rights reserved.
C1 [Deskins, N. Aaron; Mei, Donghai; Dupuis, Michel] Pacific NW Natl Lab, Inst Interfacial Catalysis, Richland, WA 99352 USA.
RP Deskins, NA (reprint author), Pacific NW Natl Lab, Inst Interfacial Catalysis, Richland, WA 99352 USA.
EM Nathaniel.Deskins@pnl.gov
RI Mei, Donghai/D-3251-2011; Deskins, Nathaniel/H-3954-2012; Mei,
Donghai/A-2115-2012
OI Mei, Donghai/0000-0002-0286-4182
FU Laboratory Directed Research and Development (LDRD)
FX This work was supported by a Laboratory Directed Research and
Development (LDRD) project at Pacific Northwest National Laboratory
(PNNL). Battelle operates PNNL for the US Department of Energy.
Computational resources were provided by the Molecular Science Computing
Facility located at the Environmental Molecular Science Laboratory in
Richland, WA and the National Energy Research Scientific Computing
Center in Berkeley, CA.
NR 66
TC 19
Z9 19
U1 8
U2 62
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0039-6028
J9 SURF SCI
JI Surf. Sci.
PD SEP 1
PY 2009
VL 603
IS 17
BP 2793
EP 2807
DI 10.1016/j.susc.2009.07.021
PG 15
WC Chemistry, Physical; Physics, Condensed Matter
SC Chemistry; Physics
GA 498HU
UT WOS:000270129100021
ER
PT J
AU Liu, Y
Sun, JR
Yang, B
AF Liu, Yu
Sun, Jiaren
Yang, Bai
TI The effects of black carbon and sulphate aerosols in China regions on
East Asia monsoons
SO TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY
LA English
DT Article
ID COMMUNITY CLIMATE MODEL; NATIONAL CENTER; CYCLE; SIMULATION; TRANSPORT;
INDOEX
AB In this paper, we examine the direct effects of sulphate and black carbon (BC) aerosols in China on East Asia monsoons and its precipitation processes by using the Community Atmosphere Model (CAM) 3.0 model. It is demonstrated that sulphate and BC aerosols in China both have the effects to weaken East Asia monsoons in both summer and winter seasons. However, they certainly differ from each other in affecting vertical structures of temperature and atmospheric circulations. Their differences are expected because of their distinct optical properties, that is, scattering versus absorbing. Even for a single type of aerosol, its effects on temperature structures and atmospheric circulations are largely season-dependent. Applications of T-test on our results indicate that forcing from BC aerosols over China is relatively weak and limited. It is also evident from our results that the effects of synthetic aerosols (sulphate and BC together) on monsoons are not simply a linear summation between these two types of aerosols. Instead, they are determined by their integrated optical properties. Synthetic aerosols to a large degree resemble effects of sulphate aerosols. This implies a likely scattering property for the integration of BC and sulphate aerosols in China.
C1 [Liu, Yu] Chinese Acad Meteorol Sci, Beijing 100081, Peoples R China.
[Sun, Jiaren] Minist Environm Protect, S China Inst Environm Sci, Guangzhou 510655, Guangdong, Peoples R China.
[Yang, Bai] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA.
RP Liu, Y (reprint author), Chinese Acad Meteorol Sci, 46 Zhongguancun S St, Beijing 100081, Peoples R China.
EM liuyu@cams.cma.gov.cn
FU National Basic Research Program of China 973 [2006CB403707,
2006CB403705]; U.S. Department of Energy; Office of Science, Biological
and Environmental Research (BER); Oak Ridge National Laboratory (ORNL);
U.S. Department of Energy [DE-AC05-00OR22725]
FX This research was supported by National Basic Research Program of China
973 (Contract number: 2006CB403707 and 2006CB403705). Dr. Bai Yang's
research was supported by U.S. Department of Energy, Office of Science,
Biological and Environmental Research (BER), and conducted at Oak Ridge
National Laboratory (ORNL), managed by UT-Battelle, LLC, for the U.S.
Department of Energy under contract DE-AC05-00OR22725.
NR 36
TC 30
Z9 43
U1 1
U2 19
PU CO-ACTION PUBLISHING
PI JARFALLA
PA RIPVAGEN 7, JARFALLA, SE-175 64, SWEDEN
SN 0280-6509
EI 1600-0889
J9 TELLUS B
JI Tellus Ser. B-Chem. Phys. Meteorol.
PD SEP
PY 2009
VL 61
IS 4
BP 642
EP 656
DI 10.1111/j.1600-0889.2009.00427.x
PG 15
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 484YP
UT WOS:000269087100006
ER
PT J
AU Li, GS
Hu, DH
Xia, G
Zhang, ZC
AF Li, Guosheng
Hu, Dehong
Xia, Gordon
Zhang, Z. Conrad
TI Methanol Partial Oxidation on MoO3/SiO2 Catalysts: Application of
Vibrational Spectroscopic Imaging Techniques in a High Throughput
Operando Reactor
SO TOPICS IN CATALYSIS
LA English
DT Article
DE Operando; High throughput; FT-IR imaging; Raman spectroscopy; Roman
probe; MoO3/SiO2
ID METAL-OXIDE CATALYSTS; MOLECULAR-STRUCTURES; MO/SIO2 CATALYSTS; SILICA
CATALYSTS; MOLYBDENUM; DISPERSION; RAMAN
AB A home-built, high-throughput operando (HTO) reactor was applied to study methanol partial oxidation reaction over MoO3/SiO2 catalysts. This HTO reactor combines Fourier transform infrared (FT-IR) imaging and Raman spectroscopy for high throughput catalyst evaluation and simultaneously for catalyst characterization under operando conditions. The catalyst activity and selectivity of all parallel reaction channels were followed at a time resolution of 2-20 s by the FT-IR imaging system that offers a spatial resolution of 16,384 pixels over a 2 x 2 inches illuminated cross-section area. Six specialized Raman probes were used to simultaneously collect Raman spectra of the catalyst surfaces and reaction intermediates under operando conditions. The structural variation of the MoO3/SiO2 catalysts with different molybdenum loadings and their catalytic performance at various temperatures were determined. The HTO reactor with the integrated imaging techniques allowed us to track the catalytic activities and the surface morphologies for multiple samples under various operando conditions.
C1 [Li, Guosheng; Hu, Dehong; Xia, Gordon; Zhang, Z. Conrad] Inst Interfacial Catalysis, Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Zhang, ZC (reprint author), Inst Interfacial Catalysis, Pacific NW Natl Lab, Richland, WA 99352 USA.
EM Conrad.zhang@kior.com
RI Hu, Dehong/B-4650-2010
OI Hu, Dehong/0000-0002-3974-2963
FU Pacific Northwest National Laboratory (PNNL)
FX This work was supported by Pacific Northwest National Laboratory (PNNL)
under the Laboratory Directed Research and Development project entitled
"Combinatorial Operando Catalysis Research". The authors also wish to
acknowledge the Institute for Interfacial Catalysis and the W. R. Wiley
Environmental Molecular Science Laboratory, a national scientific user
facility located at PNNL.
NR 29
TC 7
Z9 7
U1 1
U2 15
PU SPRINGER/PLENUM PUBLISHERS
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1022-5528
J9 TOP CATAL
JI Top. Catal.
PD SEP
PY 2009
VL 52
IS 10
BP 1381
EP 1387
DI 10.1007/s11244-009-9325-y
PG 7
WC Chemistry, Applied; Chemistry, Physical
SC Chemistry
GA 472BK
UT WOS:000268103900010
ER
PT J
AU Yang, Y
Mims, CA
Disselkamp, RS
Peden, CHF
Campbell, CT
AF Yang, Y.
Mims, C. A.
Disselkamp, R. S.
Peden, C. H. F.
Campbell, C. T.
TI Simultaneous MS-IR Studies of Surface Formate Reactivity Under Methanol
Synthesis Conditions on Cu/SiO2
SO TOPICS IN CATALYSIS
LA English
DT Article
DE SSITKA; Surface species; Formate; Cu/SiO2; Infrared; Mass spectrometry;
Methanol synthesis
ID WATER-GAS SHIFT; SUPPORTED COPPER-CATALYSTS; FORMIC-ACID; PT/CEO2
CATALYST; CU(111) SURFACE; DECOMPOSITION; HYDROGENATION; TEMPERATURE;
MECHANISM; KINETICS
AB The coverages and surface lifetimes of copper-bound formates on Cu/SiO2 catalysts, and the steady-state rates of reverse water-gas shift and methanol synthesis have been measured simultaneously by mass (MS) and infrared (IR) spectroscopies under a variety of elevated pressure conditions at temperatures between 140 and 160 A degrees C. DCOO lifetimes under steady state catalytic conditions in CO2:D-2 atmospheres were measured by C-12-C-13 isotope transients (SSITKA). The values range from 220 s at 160 A degrees C to 660 s at 140 A degrees C. The catalytic rates of both reverse water gas shift (RWGS) and methanol synthesis are similar to 100-fold slower than this formate removal rate back to CO2 + 1/2 H-2, and thus they do not significantly influence the formate lifetime or coverage at steady state. The formate coverage is instead determined by formate's rapid production/decomposition equilibrium with gas phase CO2 + H-2. The results are consistent with formate being an intermediate in methanol synthesis, but with the rate-controlling step being after formate production (for example, its further hydrogenation to methoxy). A 2-3 fold shorter life time (faster decomposition rate) was observed for formate under reactions conditions, with both D-2 and CO2 present, than in pure Ar or D-2 + Ar alone. This effect, due in part to the effects of the coadsorbates produced under reaction conditions, illustrates the importance of using in situ techniques in the study of catalytic mechanisms. The carbon which appears in the methanol product spends a longer time on the surface than the formate species, 1.8 times as long at 140 A degrees C. The additional delay on the surface is attributed in part to readsorption of methanol on the catalyst, thus obscuring the mechanistic link between formate and methanol.
C1 [Mims, C. A.] Univ Toronto, Dept Chem Engn & Chem, Toronto, ON M5S 3E5, Canada.
[Yang, Y.; Disselkamp, R. S.; Peden, C. H. F.] Inst Interfacial Catalysis, Pacific NW Natl Lab, Richland, WA 99354 USA.
[Campbell, C. T.] Univ Washington, Dept Chem, Seattle, WA 98195 USA.
RP Mims, CA (reprint author), Univ Toronto, Dept Chem Engn & Chem, 200 Coll St, Toronto, ON M5S 3E5, Canada.
EM charles.mims@utoronto.ca
OI Peden, Charles/0000-0001-6754-9928
FU US Department of Energy Office of Biological and Environmental Research;
Department of Energy, Office of Basic Energy Sciences, Chemical Sciences
Division [DE-FG02-96ER14630]
FX This study was performed at the Institute for Interfacial Catalysis
(IIC) at Pacific Northwest National Laboratory (PNNL), and funded by a
Laboratory Directed Research and Development (LDRD) grant as part of the
Catalysis Initiative program administered by PNNL. The work was carried
out in the Environmental Molecular Sciences Laboratory (EMSL) at PNNL, a
National Scientific User facility supported by the US Department of
Energy Office of Biological and Environmental Research. PNNL is operated
by Battelle Memorial Institute for the U.S. Department of Energy. CTC
would like to acknowledge the Department of Energy, Office of Basic
Energy Sciences, Chemical Sciences Division grant number
DE-FG02-96ER14630, for support of this work. CAM gratefully acknowledges
PNNL support for his participation in the IIC as a visiting professor.
The authors wish to dedicate this paper to the memory of Professor J. M.
White.
NR 36
TC 22
Z9 22
U1 2
U2 41
PU SPRINGER/PLENUM PUBLISHERS
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1022-5528
J9 TOP CATAL
JI Top. Catal.
PD SEP
PY 2009
VL 52
IS 10
BP 1440
EP 1447
DI 10.1007/s11244-009-9320-3
PG 8
WC Chemistry, Applied; Chemistry, Physical
SC Chemistry
GA 472BK
UT WOS:000268103900016
ER
PT J
AU Hong, ST
Kim, DW
You, YJ
Weil, KS
AF Hong, Sung-Tae
Kim, Dae-Wook
You, Yong-Joo
Weil, K. Scott
TI Effect of annealing on two different niobium-clad stainless steel PEMFC
bipolar plate materials
SO TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
LA English
DT Article
CT 1st International Symposium on Hybrid Materials and Processing (HyMaP
2008)
CY OCT 27-29, 2008
CL Busan, SOUTH KOREA
DE clad sheet; bipolar plate; proton exchange membrane fuel cell; annealing
ID POLYMER FUEL-CELLS
AB Niobium (Nb)-clad stainless steels(SS) produced via roll bonding are being considered for use in the bipolar plates of polymer electrolyte membrane fuel cell(PEMFC) stacks. Because the roll bonding process induces substantial work hardening in the constituent materials, thermal annealing is used to restore ductility to the clad sheet so that it can be subsequently blanked, stamped and dimpled in forming the final plate component, Two roll bonded materials, niobium clad 340L stainless steel (Nb/340L SS) and niobium clad 434 stainless steel (Nb/434 SS) were annealed under optimized conditions prescribed by the cladding manufacturer. Comparative mechanical testing conducted on each material before and after annealing shows significant improvement in ductility in both cases. However, corresponding microstructural analyses indicate,in obvious difference between the two heat treated materials. During annealing, an interlayer with thick less than 1 mu m forms between the constituent layers in the Nb/340L SS, whereas no interlayer is found in the annealed Nb/434 SS material. Prior work suggests that internal defects potentially can be generated in such an interlayer during metal forming operations. Thus, Nb/434 SS may he the preferred candidate material for this application.
C1 [Hong, Sung-Tae] Univ Ulsan, Sch Mech & Automot Engn, Ulsan 680749, South Korea.
[Kim, Dae-Wook; You, Yong-Joo] Univ Ulsan, Dept Mat Sci & Engn, Ulsan 680749, South Korea.
[Weil, K. Scott] Pacific NW Natl Lab, Richland, WA USA.
RP Hong, ST (reprint author), Univ Ulsan, Sch Mech & Automot Engn, Ulsan 680749, South Korea.
EM sthong@ulsan.ac.kr
RI Choi, Seungtae/C-6821-2011; Hong, Sung Tae/K-2720-2015
OI Choi, Seungtae/0000-0002-4119-9787; Hong, Sung Tae/0000-0003-2263-7099
NR 12
TC 2
Z9 3
U1 0
U2 10
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1003-6326
J9 T NONFERR METAL SOC
JI Trans. Nonferrous Met. Soc. China
PD SEP
PY 2009
VL 19
BP S56
EP S60
PG 5
WC Metallurgy & Metallurgical Engineering
SC Metallurgy & Metallurgical Engineering
GA 501JM
UT WOS:000270377800010
ER
PT J
AU Johnson, CM
Kugele, F
Herdes, GA
Sandoval, M
AF Johnson, C. M.
Kugele, F.
Herdes, G. A.
Sandoval, M.
TI Partnering to Enhance Security: The National Nuclear Security
Administration and American Red Cross
SO TRANSFUSION
LA English
DT Meeting Abstract
CT 62nd Annual Meeting of the American-Association-of-Blood-Banks
CY OCT 24-27, 2009
CL New Orleans, LA
SP Amer Assoc Blood Banks
C1 [Johnson, C. M.] Natl Nucl Secur Adm, Global Threat Reduct Initiat, Washington, DC USA.
[Kugele, F.] Amer Red Cross, Washington, DC 20006 USA.
[Herdes, G. A.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Sandoval, M.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
EM craig.johnson@nnsa.doe.gov
NR 0
TC 0
Z9 0
U1 0
U2 0
PU WILEY-BLACKWELL PUBLISHING, INC
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0041-1132
J9 TRANSFUSION
JI Transfusion
PD SEP
PY 2009
VL 49
BP 276A
EP 276A
PG 1
WC Hematology
SC Hematology
GA 490XU
UT WOS:000269542200724
ER
EF