FN Thomson Reuters Web of Science™
VR 1.0
PT J
AU Van Stipdonk, MJ
Chien, W
Anbalagan, V
Gresham, GL
Groenewold, GS
AF Van Stipdonk, MJ
Chien, W
Anbalagan, V
Gresham, GL
Groenewold, GS
TI Oxidation of 2-propanol ligands during collision-induced dissociation of
a gas-phase uranyl complex
SO INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
LA English
DT Article
DE 2-propanol oxidation; tandem mass spectrometry; uranyl-ligand cations;
collision-induced-dissociation; electrospray ionization
ID TRAP MASS-SPECTROMETER; QUADRUPOLE ION-TRAP; ACTINIDE ALKOXIDE
CHEMISTRY; ORGANOMETALLIC CHEMISTRY; MOLECULE REACTIONS; METAL-IONS;
HYDRATION; CATIONS; OXYANIONS; ALCOHOL
AB We demonstrate, by way of multi-stage tandem mass spectrometry and extensive deuterium labeling, that 2-propanol is converted to acetone, and 2-propoxide to acetaldehyde, when monopositive 2-propanol-coordinated uranyl-ligand cations are subjected to collision-induced dissociation in the gas-phase environment of an ion trap mass spectrometer. A species with formula [(UO2OCH(CH3)(2))(HOCH(CH3)(2)](+), derived from dissociation of the gas-phase precursor [(UO2NO3)(HOCH(CH3)(2))(3)](+) eliminates two H atoms and 'CH3 in consecutive stages to generate a monopositive complex composed of the U(V) species UO2+ coordinated by acetone and acetaldehyde, i.e. [UO2+(C=C(CH3)(2))(O=C(H)CH3)] Dissociation of this latter ion resulted in elimination of the two coordinating carbonyl ligands in two consecutive dissociation stages to leave UO2+. Analogous reactions were not observed for uranyl complexes containing 1-propanol or 2-methyl-2-propanol, or for cationic complexes with divalent metals such as Ni2+, CO2+, Pb2+ and Ca2+. One explanation for these reactions is bond insertion by the metal center in the bis-ligated uranyl complex, which would be expected to have an LUMO consisting of unoccupied 6d-orbitals that would confer transition metal-like behavior on the complex. (C) 2004 Elsevier B.V. All rights reserved.
C1 Wichita State Univ, Dept Chem, Wichita, KS 67260 USA.
Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA.
RP Van Stipdonk, MJ (reprint author), Wichita State Univ, Dept Chem, Wichita, KS 67260 USA.
EM mike.vanstipdonk@wichita.edu
NR 57
TC 18
Z9 18
U1 0
U2 4
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 OCT 1
PY 2004
VL 237
IS 2-3
BP 175
EP 183
DI 10.1016/j.ijms.2004.07.007
PG 9
WC Physics, Atomic, Molecular & Chemical; Spectroscopy
SC Physics; Spectroscopy
GA 860GV
UT WOS:000224331400007
ER
PT J
AU Samuel, S
AF Samuel, S
TI On the speed of gravity and the Jupiter/quasar measurement
SO INTERNATIONAL JOURNAL OF MODERN PHYSICS D
LA English
DT Review
DE speed of gravity; general relativity; quasar J0842+1845
ID GENERAL RELATIVITY; FOURTH TEST; TIME-DELAY; PROPAGATION
AB I present the theory and analysis behind the experiment by Fomalont and Kopeikin involving Jupiter and quasar J0842+1845 that purported to measure the speed of gravity. The computation of the v(J)/c correction to the gravitational time delay difference relevant to the experiment is derived, where vj is the speed of Jupiter as measured from Earth. Since the vj/c corrections are too small to have been measured in the Jupiter/quasar experiment, it is impossible that the speed of gravity was extracted from the data, and I explain what went wrong with the data analysis. Finally, mistakes are shown in papers by Fomalont and Kopeikin intended to rebut my work and the work of others.
C1 Lawrence Berkeley Lab, Theory Grp, Berkeley, CA 94720 USA.
RP Samuel, S (reprint author), Lawrence Berkeley Lab, Theory Grp, MS 50A-5101,1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM samuel@thsrv.lbl.gov
NR 21
TC 14
Z9 15
U1 0
U2 1
PU WORLD SCIENTIFIC PUBL CO PTE LTD
PI SINGAPORE
PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE
SN 0218-2718
J9 INT J MOD PHYS D
JI Int. J. Mod. Phys. D
PD OCT
PY 2004
VL 13
IS 9
BP 1753
EP 1770
DI 10.1142/S0218271804005900
PG 18
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 874PP
UT WOS:000225362600001
ER
PT J
AU Min, KB
Rutqvist, J
Tsang, CF
Jing, LR
AF Min, KB
Rutqvist, J
Tsang, CF
Jing, LR
TI Stress-dependent permeability of fractured rock masses: a numerical
study
SO INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
LA English
DT Article
DE stress-dependent permeability; fractured rock; distinct element method;
discrete fracture network; channeling
ID FLUID-FLOW; ANISOTROPIC PERMEABILITY; HYDRAULIC CONDUCTIVITY;
DEFORMATION; EXCAVATION; APERTURE; TUNNELS; INTACT; TENSOR; MODEL
AB We investigate the stress-dependent permeability issue in fractured rock masses considering the effects of nonlinear normal deformation and shear dilation of fractures using a two-dimensional distinct element method program, UDEC, based on a realistic discrete fracture network realization. A series of "numerical" experiments were conducted to calculate changes in the permeability of simulated fractured rock masses under various loading conditions. Numerical experiments were conducted in two ways: (1) increasing the overall stresses with a fixed ratio of horizontal to vertical stresses components; and (2) increasing the differential stresses (i.e., the difference between the horizontal and vertical stresses) while keeping the magnitude of vertical stress constant.
These numerical experiments show that the permeability of fractured rocks decreases with increased stress magnitudes when the stress ratio is not large enough to cause shear dilation of fractures, whereas permeability increases with increased stress when the stress ratio is large enough. Permeability changes at low stress levels are more sensitive than at high stress levels due to the nonlinear fracture normal stress-displacement relation. Significant stress-induced channeling is observed as the shear dilation causes the concentration of fluid flow along connected shear fractures. Anisotropy of permeability emerges with the increase of differential stresses, and this anisotropy can become more prominent with the influence of shear dilation and localized flow paths. A set of empirical equations in closed-form, accounting for both normal closure and shear dilation of the fractures, is proposed to model the stress-dependent permeability. These equations prove to be in good agreement with the results obtained from our numerical experiments. (C) 2004 Elsevier Ltd. All rights reserved.
C1 Royal Inst Technol, KTH, Dept Land & Water Resources Engn, Engn Geol & Geophys Res Grp, S-10044 Stockholm, Sweden.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA.
RP Min, KB (reprint author), Royal Inst Technol, KTH, Dept Land & Water Resources Engn, Engn Geol & Geophys Res Grp, Tekn Ringen 72, S-10044 Stockholm, Sweden.
EM kibok@kth.se
RI Min, Ki-Bok/B-5374-2008; Rutqvist, Jonny/F-4957-2015
OI Min, Ki-Bok/0000-0001-7463-7395; Rutqvist, Jonny/0000-0002-7949-9785
NR 43
TC 117
Z9 148
U1 6
U2 68
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 1365-1609
J9 INT J ROCK MECH MIN
JI Int. J. Rock Mech. Min. Sci.
PD OCT
PY 2004
VL 41
IS 7
BP 1191
EP 1210
DI 10.1016/j.ijrmms.2004.05.005
PG 20
WC Engineering, Geological; Mining & Mineral Processing
SC Engineering; Mining & Mineral Processing
GA 855WH
UT WOS:000224005100010
ER
PT J
AU Bollen, LJM
Kilmarx, PH
Tappero, JW
AF Bollen, LJM
Kilmarx, PH
Tappero, JW
TI Interpretation of genital findings in microbicide safety trials: review
of the 'Photo Atlas for Microbicide Evaluation'
SO JAIDS-JOURNAL OF ACQUIRED IMMUNE DEFICIENCY SYNDROMES
LA English
DT Article; Proceedings Paper
CT Meeting on Assessing Inflammation and Epithelial Integrity in Vaginal
Product Research
CY NOV 19-21, 2003
CL DOMINICAN REP
SP CONRAD, WHO
DE Genital findings; microbicide clinical trials; photo atlas
AB The Photo Atlas for Microbicide Evaluation was published in May 2002 for distribution among researchers to be used as a training or reference document during microbicide clinical trials. We have reviewed the contents of the Photo Atlas, including the interpretation and documentation of genital findings. The rationale for the categorization of genital lesions into different lesion types is also discussed. Efforts will continue to standardize colposcopy until more accurate and objective methods become available to assess the safety of candidate microbicides.
C1 US CDC, Nonthaburi 11000, Thailand.
Oak Ridge Inst Sci & Educ, Oak Ridge, AL USA.
BOTUSA Project, Gaborone, Botswana.
RP Bollen, LJM (reprint author), US CDC, POB 139, Nonthaburi 11000, Thailand.
EM lbollen@tuc.or.th
NR 7
TC 4
Z9 4
U1 0
U2 0
PU LIPPINCOTT WILLIAMS & WILKINS
PI PHILADELPHIA
PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA
SN 1525-4135
J9 JAIDS-J ACQ IMM DEF
JI JAIDS
PD OCT
PY 2004
VL 37
SU 3
BP S156
EP S159
PG 4
WC Immunology; Infectious Diseases
SC Immunology; Infectious Diseases
GA 867FZ
UT WOS:000224829100004
PM 16419265
ER
PT J
AU Ott, RD
Kadolkar, P
Blue, CA
Cole, AC
Thompson, GB
AF Ott, RD
Kadolkar, P
Blue, CA
Cole, AC
Thompson, GB
TI The pulse thermal processing of nanocrystalline silicon thin-films
SO JOM
LA English
DT Article
AB Pulse thermal processing (PTP) has the capability of processing thin-films and nanoparticles over broad areas utilizing high-density infrared plasma arc lamp technology. Heating rates reaching 600,000degreesC/s, which is orders of magnitude larger than current state-of-the-art rapid thermal annealing systems, are possible that allow, controlled diffusion on the nanoscale. The ability to control heating at these levels permits processing thin-films and nanoparticles on temperature-sensitive substrates such as polymers. The PTP technique has been used to crystallize spattered amorphous silicon thin-films on sapphire substrates.
C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
Univ Alabama, Tuscaloosa, AL USA.
RP Ott, RD (reprint author), Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA.
EM ottr@ornl.gov
NR 13
TC 11
Z9 11
U1 1
U2 4
PU MINERALS METALS MATERIALS SOC
PI WARRENDALE
PA 184 THORN HILL RD, WARRENDALE, PA 15086 USA
SN 1047-4838
J9 JOM-US
JI JOM
PD OCT
PY 2004
VL 56
IS 10
BP 45
EP 47
DI 10.1007/s11837-004-0290-4
PG 3
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering; Mineralogy; Mining & Mineral Processing
SC Materials Science; Metallurgy & Metallurgical Engineering; Mineralogy;
Mining & Mineral Processing
GA 861VG
UT WOS:000224446100010
ER
PT J
AU Carpick, RW
Flater, EE
Sridharan, K
Ogletree, DF
Salmeron, M
AF Carpick, RW
Flater, EE
Sridharan, K
Ogletree, DF
Salmeron, M
TI Atomic-scale friction and its connection to fracture mechanics
SO JOM
LA English
DT Article
ID INTERFACIAL SHEAR-STRENGTH; SINGLE-ASPERITY CONTACTS; LATERAL FORCE
MICROSCOPY; CALIBRATION METHOD; NANOMETER-SCALE; ADHESION; SURFACE;
STIFFNESS; LOAD; AREA
AB This paper presents a study of contact, adhesion, and friction for nano-asperities using atomic-force microscopy. Proportionality was observed between friction and true contact area, as well as agreement with continuum mechanics models at the nanometer scale, although several features unique to the nanoscale were also observed. The continuum models can be understood in the framework of fracture mechanics and are used to determine the fundamental tribological parameters of nanoscale interfaces: the interfacial shear strength and the work of adhesion.
C1 Univ Wisconsin, Dept Engn Phys, Madison, WI 53706 USA.
Lawrence Berkeley Lab, Div Sci Mat, Berkeley, CA USA.
RP Carpick, RW (reprint author), Univ Wisconsin, Dept Engn Phys, 543 Engn Res Bldg, Madison, WI 53706 USA.
EM carpick@engr.wisc.edu
RI Ogletree, D Frank/D-9833-2016
OI Ogletree, D Frank/0000-0002-8159-0182
NR 53
TC 13
Z9 13
U1 0
U2 10
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1047-4838
J9 JOM-US
JI JOM
PD OCT
PY 2004
VL 56
IS 10
BP 48
EP 52
DI 10.1007/s11837-004-0291-3
PG 5
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering; Mineralogy; Mining & Mineral Processing
SC Materials Science; Metallurgy & Metallurgical Engineering; Mineralogy;
Mining & Mineral Processing
GA 861VG
UT WOS:000224446100011
ER
PT J
AU Zhu, YT
Langdon, TG
AF Zhu, YT
Langdon, TG
TI The fundamentals of nanostructured materials processed by severe plastic
deformation
SO JOM
LA English
DT Article
ID STRAIN-RATE SUPERPLASTICITY; ULTRAFINE-GRAINED TITANIUM; COMMERCIAL
ALUMINUM-ALLOYS; HIGH-PRESSURE TORSION; NANOCRYSTALLINE AL;
MICROSTRUCTURAL EVOLUTION; THERMAL-STABILITY; ROOM-TEMPERATURE;
BEHAVIOR; METALS
AB Nanostructured materials produced by severe plastic deformation (SPD) are 100% dense, contamination-free, and sufficiently large for use in real commercial structural applications. These materials are found to have high strength, good ductility, superior superplasticity, a low friction coefficient, high wear resistance, enhanced high-cycle fatigue life, and good corrosion resistance. This article reviews the structures and properties of nanostructured materials produced by SPD and reports recent progress in determining the deformation mechanisms that lead to these superior mechanical properties.
C1 Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
Univ So Calif, Dept Aeronaut & Mech Engn, Los Angeles, CA USA.
Univ So Calif, Dept Mat Sci & Engn, Los Angeles, CA USA.
RP Zhu, YT (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
EM yzhu@lanl.gov
RI Langdon, Terence/B-1487-2008; Zhu, Yuntian/B-3021-2008
OI Zhu, Yuntian/0000-0002-5961-7422
NR 56
TC 108
Z9 114
U1 3
U2 42
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1047-4838
J9 JOM-US
JI JOM
PD OCT
PY 2004
VL 56
IS 10
BP 58
EP 63
DI 10.1007/s11837-004-0294-0
PG 6
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering; Mineralogy; Mining & Mineral Processing
SC Materials Science; Metallurgy & Metallurgical Engineering; Mineralogy;
Mining & Mineral Processing
GA 861VG
UT WOS:000224446100014
ER
PT J
AU Lowe, TC
Valiev, RZ
AF Lowe, TC
Valiev, RZ
TI The use of severe plastic deformation techniques in grain refinement
SO JOM
LA English
DT Article
ID BONDING ARB PROCESS; EVOLUTIONS; ALLOYS; METALS; NICKEL; SHEAR
AB Severe plastic deformation (SPD) has emerged as a promising method to produce ultrafine-grained materials with attractive properties. Today, SPD techniques are rapidly developing and are on the verge of moving from lab-scale research into commercial production. This paper discusses new trends in the development of SPD techniques such as high-pressure torsion and equal-channel angle pressing, as well as new alternative techniques for introducing SPD. The paper also contains a comparative analysis of SPD techniques in terms of their relative capabilities for grain refinement, enhancement of properties, and potential to economically produce ultrafine-grained metals and alloys.
C1 Los Alamos Natl Lab, Sci & Technol Base Programs, Los Alamos, NM 87545 USA.
Ufa State Aviat Tech Univ, Inst Phys Adv Mat, Ufa, Russia.
RP Lowe, TC (reprint author), Los Alamos Natl Lab, Sci & Technol Base Programs, POB 1663, Los Alamos, NM 87545 USA.
EM tlowe@lanl.gov
NR 37
TC 47
Z9 50
U1 0
U2 10
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1047-4838
J9 JOM-US
JI JOM
PD OCT
PY 2004
VL 56
IS 10
BP 64
EP +
DI 10.1007/s11837-004-0295-z
PG 6
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering; Mineralogy; Mining & Mineral Processing
SC Materials Science; Metallurgy & Metallurgical Engineering; Mineralogy;
Mining & Mineral Processing
GA 861VG
UT WOS:000224446100015
ER
PT J
AU Gibson, WM
Schultz, AJ
Richardson, JW
Carpenter, JM
Mildner, DFR
Chen-Mayer, HH
Miller, ME
Maxey, ER
Youngman, R
AF Gibson, WM
Schultz, AJ
Richardson, JW
Carpenter, JM
Mildner, DFR
Chen-Mayer, HH
Miller, ME
Maxey, ER
Youngman, R
TI Convergent-beam neutron crystallography
SO JOURNAL OF APPLIED CRYSTALLOGRAPHY
LA English
DT Article
ID OF-FLIGHT NEUTRON; X-RAY OPTICS; MACROMOLECULAR CRYSTALLOGRAPHY; LAUE
DIFFRACTION; PROTEIN CRYSTALLOGRAPHY; DATA-COLLECTION; SYSTEM
AB Two monolithic polycapillary optics of different focal length and beam convergence are employed to investigate the use of focusing lenses for the neutron convergent-beam method for time-of-flight crystallography with a broad neutron wavelength bandwidth. The optic of short output focal length ( 15.5 mm) with a beam convergence of 16.8 (10)degrees has a focal spot diameter of similar to 100 mum for 3.2 Angstrom neutrons. For an MnF2 single-crystal sample of this diameter on a pulsed neutron source, this lens gives an expected integrated intensity gain of similar to 100 for a 020 Bragg peak. Further measurements on a powder diffractometer show that the expected diffracted beam intensities for Ni have gains in excess of 500 for powder samples of this diameter. The degradation of resolution is minimized in the backscattering geometry.
C1 Xray Opt Syst Inc, E Greenbush, NY 12061 USA.
Argonne Natl Lab, Intense pulsed Neutron Source, Argonne, IL 60439 USA.
Natl Inst Stand & Technol, Bethesda, MD 20889 USA.
RP Gibson, WM (reprint author), Xray Opt Syst Inc, 15 Tech Valley Dr, E Greenbush, NY 12061 USA.
EM wgibson@xos.com
NR 25
TC 4
Z9 4
U1 0
U2 2
PU BLACKWELL MUNKSGAARD
PI COPENHAGEN
PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK
SN 0021-8898
J9 J APPL CRYSTALLOGR
JI J. Appl. Crystallogr.
PD OCT
PY 2004
VL 37
BP 778
EP 785
DI 10.1107/S0021889804015882
PN 5
PG 8
WC Chemistry, Multidisciplinary; Crystallography
SC Chemistry; Crystallography
GA 853WE
UT WOS:000223858900013
ER
PT J
AU Alkire, RW
Schuessler, R
Rotella, FJ
Gonczy, JD
Rosenbaum, G
AF Alkire, RW
Schuessler, R
Rotella, FJ
Gonczy, JD
Rosenbaum, G
TI Re-thinking the role of the beamstop at a synchrotron-based protein
crystallography beamline
SO JOURNAL OF APPLIED CRYSTALLOGRAPHY
LA English
DT Article
ID AREA DETECTORS; DEVICE
AB A 1 mm vertical-profile X-ray beamstop has been designed to operate in the energy range 6 - 20 keV. The relationship between the beamstop-to-sample distance and air scatter is discussed with the intent of establishing criteria for optimal beamstop positioning during an experiment. Different choices for beamstop materials are described with respect to stopping power, fluorescence and scattering from the surface. Suggestions for improvements in beamstop design are presented which are applicable for future automation and equipment safety. All work was performed on the Structural Biology Center insertion-device beamline, 19ID, at the Advanced Photon Source.
C1 Argonne Natl Lab, Biosci Div, Argonne, IL 60439 USA.
Univ Georgia, Dept Biochem, APS, SER CAT, Argonne, IL 60439 USA.
RP Alkire, RW (reprint author), Argonne Natl Lab, Biosci Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM alkire@anl.gov
NR 12
TC 4
Z9 4
U1 1
U2 2
PU BLACKWELL MUNKSGAARD
PI COPENHAGEN
PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK
SN 0021-8898
J9 J APPL CRYSTALLOGR
JI J. Appl. Crystallogr.
PD OCT
PY 2004
VL 37
BP 836
EP 840
DI 10.1107/S0021889804014499
PN 5
PG 5
WC Chemistry, Multidisciplinary; Crystallography
SC Chemistry; Crystallography
GA 853WE
UT WOS:000223858900021
ER
PT J
AU Banta, RM
Darby, LS
Fast, JD
Pinto, JO
Whiteman, CD
Shaw, WJ
Orr, BW
AF Banta, RM
Darby, LS
Fast, JD
Pinto, JO
Whiteman, CD
Shaw, WJ
Orr, BW
TI Nocturnal low-level jet in a mountain basin complex. part I: Evolution
and effects on local flows
SO JOURNAL OF APPLIED METEOROLOGY
LA English
DT Article
ID BOUNDARY-LAYER EVOLUTION; COLORADO FRONT RANGE; METEOROLOGICALLY
RELEVANT CHARACTERISTICS; DOPPLER LIDAR MEASUREMENTS; IMPROVED MOMENT
ESTIMATION; DRAINAGE FLOWS; CANYONLAND BASIN; CLOSURE-MODEL;
GRAND-CANYON; VALLEY
AB A Doppler lidar deployed to the center of the Great Salt Lake (GSL) basin during the Vertical Transport and Mixing (VTMX) field campaign in October 2000 found a diurnal cycle of the along-basin winds with northerly up-basin flow during the day and a southerly down-basin low-level jet at night. The emphasis of VTMX was on stable atmospheric processes in the cold-air pool that formed in the basin at night. During the night the jet was fully formed as it entered the GSL basin from the south. Thus, it was a feature of the complex string of basins draining toward the Great Salt Lake, which included at least the Utah Lake basin to the south. The timing of the evening reversal to down-basin flow was sensitive to the larger-scale north-south pressure gradient imposed on the basin complex. On nights when the pressure gradient was not too strong, local drainage flow (slope flows and canyon outflow) was well developed along the Wasatch Range to the east and coexisted with the basin jet. The coexistence of these two types of flow generated localized regions of convergence and divergence, in which regions of vertical motion and transport were focused. Mesoscale numerical simulations captured these features and indicated that updrafts on the order of 5 cm s(-1) could persist in these localized convergence zones, contributing to vertical displacement of air masses within the basin cold pool.
C1 NOAA, ET2, Environm Technol Lab, Boulder, CO 80305 USA.
Pacific NW Natl Lab, Richland, WA USA.
Natl Ctr Atmospher Res, Boulder, CO 80307 USA.
RP Banta, RM (reprint author), NOAA, ET2, Environm Technol Lab, 325 Broadway, Boulder, CO 80305 USA.
EM robert.banta@noaa.gov
RI Banta, Robert/B-8361-2008; Darby, Lisa/A-8037-2009
OI Darby, Lisa/0000-0003-1271-0643
NR 64
TC 46
Z9 46
U1 0
U2 5
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0894-8763
J9 J APPL METEOROL
JI J. Appl. Meteorol.
PD OCT
PY 2004
VL 43
IS 10
BP 1348
EP 1365
DI 10.1175/JAM2142.1
PG 18
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 870ZV
UT WOS:000225099200002
ER
PT J
AU Barabash, OM
Horton, JA
Babu, SS
Vitek, JM
David, SA
Park, JW
Ice, GE
Barabash, RI
AF Barabash, OM
Horton, JA
Babu, SS
Vitek, JM
David, SA
Park, JW
Ice, GE
Barabash, RI
TI Evolution of dislocation structure in the heat affected zone of a
nickel-based single crystal
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID STRAIN GRADIENT PLASTICITY; INTERNAL-STRESSES; SUPERALLOY
AB Using polychromatic microbeam synchrotron diffraction together with electron and optical microscopy, we studied dislocation structure changes of Ni-based single crystal superalloy during impulse heating up to the melting temperature. It is shown that the distribution of the thermal gradient is not monotonic. The maximum value of the thermal gradient is observed in the heat affected zone near the fusion line. Depending on the temperature, the formation of dislocation is accompanied by the partial or complete dissolution of gamma' particles in the matrix. Dislocations form and multiply due to thermal gradients, and their arrangement correlates with temperature gradient field and with the dissolution and reprecipitation of gamma' particles. (C) 2004 American Institute of Physics.
C1 Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA.
RP Barabash, OM (reprint author), Oak Ridge Natl Lab, Div Met & Ceram, POB 2008, Oak Ridge, TN 37831 USA.
EM barabashom@ornl.gov
RI Babu, Sudarsanam/D-1694-2010
OI Babu, Sudarsanam/0000-0002-3531-2579
NR 18
TC 12
Z9 12
U1 1
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 0021-8979
J9 J APPL PHYS
JI J. Appl. Phys.
PD OCT 1
PY 2004
VL 96
IS 7
BP 3673
EP 3679
DI 10.1063/1.1777393
PG 7
WC Physics, Applied
SC Physics
GA 857VB
UT WOS:000224145800011
ER
PT J
AU Bringa, EM
Cazamias, JU
Erhart, P
Stolken, J
Tanushev, N
Wirth, BD
Rudd, RE
Caturla, MJ
AF Bringa, EM
Cazamias, JU
Erhart, P
Stolken, J
Tanushev, N
Wirth, BD
Rudd, RE
Caturla, MJ
TI Atomistic shock Hugoniot simulation of single-crystal copper
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID MOLECULAR-DYNAMICS SIMULATIONS; EQUATION-OF-STATE; METALS; CU; PRESSURE;
MODEL; WAVES; MO; AL; COMPRESSION
AB Planar shock waves in single-crystal copper were simulated using nonequilibrium molecular dynamics with a realistic embedded atom potential. The simulation results are in good agreement with new experimental data presented here, for the Hugoniot of single-crystal copper along <100>. Simulations were performed for Hugoniot pressures in the range 2 GPa - 800 GPa, up to well above the shock induced melting transition. Large anisotropies are found for shock propagation along <100>, <110>, and <111>, with quantitative differences from pair potentials results. Plastic deformation starts at U(p)greater than or similar to0.75 km/s, and melting occurs between 200 and 220 GPa, in agreement with the experimental melting pressure of polycrystalline copper. The Voigt and Reuss averages of our simulated Hugoniot do not compare well below melting with the experimental Hugoniot of polycrystalline copper. This is possibly due to experimental targets with preferential texturing and/or a much lower Hugoniot elastic limit. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Tech Univ Darmstadt, Inst Mat Wissensch, D-64287 Darmstadt, Germany.
Univ Calif Los Angeles, Dept Math, Los Angeles, CA 90024 USA.
Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA.
Univ Alicante, Dept Fis Aplicada, E-03690 Alicante, Spain.
RP Bringa, EM (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RI Bringa, Eduardo/F-8918-2011; Caturla, Maria /D-6241-2012; Erhart,
Paul/G-6260-2011; Wirth, Brian/O-4878-2015
OI Caturla, Maria /0000-0002-4809-6553; Erhart, Paul/0000-0002-2516-6061;
Wirth, Brian/0000-0002-0395-0285
NR 53
TC 121
Z9 125
U1 0
U2 25
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 OCT 1
PY 2004
VL 96
IS 7
BP 3793
EP 3799
DI 10.1063/1.1789266
PG 7
WC Physics, Applied
SC Physics
GA 857VB
UT WOS:000224145800032
ER
PT J
AU Mahan, AH
Biswas, R
Gedvilas, LM
Williamson, DL
Pan, BC
AF Mahan, AH
Biswas, R
Gedvilas, LM
Williamson, DL
Pan, BC
TI On the influence of short and medium range order on the material band
gap in hydrogenated amorphous silicon
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID A-SI-H; CHEMICAL-VAPOR-DEPOSITION; SOLAR-CELLS; THIN-FILMS; DILUTION;
MICROCRYSTALLINITY; CRYSTALLINITY; SPECTROSCOPY; SILANE; ONSET
AB We examine different types of order measured in hydrogenated amorphous silicon (a-Si:H) and their effect on the optical absorption (band gap). We first review previous experimental work determining order on a short-range scale as probed by Raman spectroscopy, and provide, using molecular dynamics simulations, a theoretical explanation for why the band gap increases when this type of ordering is improved. We then present results on a-Si:H films deposited by hot wire chemical vapor deposition (CVD) and plasma enhanced CVD where the short-range order, from Raman spectroscopy, does not change, but order on a larger or medium-range scale does. This order is determined by measuring the width of the first x-ray diffraction peak, and was varied by depositing films at different substrate temperatures and/or different hydrogen dilutions. We find that the film band gap also increases when this type of ordering improves, and we provide a possible mechanism to explain these trends. We also suggest that much of the previous literature showing an increase in band gap with increasing film hydrogen content should be treated with caution, as these works may not have accurately deconvoluted the effects of optical adsorption due to film hydrogenation from those due to both types of lattice ordering. Finally, we argue that this same trend may apply, to a limited extent, to microcrystalline silicon. (C) 2004 American Institute of Physics.
C1 Natl Renewable Energy Lab, Golden, CO 80401 USA.
Iowa State Univ, Dept Phys, Ames, IA 50011 USA.
Iowa State Univ, Ctr Microelect Res, Ames, IA 50011 USA.
Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA.
Univ Sci & Technol China, Dept Phys, Hefei 230026, Peoples R China.
RP Mahan, AH (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA.
RI Pan, Bicai/A-1235-2010
NR 42
TC 33
Z9 35
U1 2
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 OCT 1
PY 2004
VL 96
IS 7
BP 3818
EP 3826
DI 10.1063/1.1772876
PG 9
WC Physics, Applied
SC Physics
GA 857VB
UT WOS:000224145800036
ER
PT J
AU Gonzalez, GB
Mason, TO
Quintana, JP
Warschkow, O
Ellis, DE
Hwang, JH
Hodges, JP
Jorgensen, JD
AF Gonzalez, GB
Mason, TO
Quintana, JP
Warschkow, O
Ellis, DE
Hwang, JH
Hodges, JP
Jorgensen, JD
TI Defect structure studies of bulk and nano-indium-tin oxide
SO JOURNAL OF APPLIED PHYSICS
LA English
DT Article
ID RAY-ABSORPTION-SPECTROSCOPY; X-RAY; ELECTRICAL-PROPERTIES; THIN-FILMS;
IN2O3; DIFFRACTION; ITO; CONDUCTIVITY; REFINEMENT; SNO2
AB The defect structure of bulk and nano-indium-tin oxide was investigated by a combination of experimental techniques, including high-resolution synchrotron x-ray diffraction, extended x-ray absorption fine structure, and time-of-flight neutron diffraction on powder specimens. The structural results include atomic positions, cation distributions, and oxygen interstitial populations for oxidized and reduced materials. These structural parameters were correlated with theoretical calculations and in situ electrical conductivity and thermopower measurements as well as existing defect models, with special reference to the model of Frank and Kostlin [G. Frank and H. Kostlin, Appl. Phys. A 27, 197 (1982)]. (C) 2004 American Institute of Physics.
C1 Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA.
Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA.
Hongik Univ, Dept Mat Sci & Engn, Seoul, South Korea.
Oak Ridge Natl Lab, Div Met & Ceram, Spallat Neutron Source Div, Oak Ridge, TN 37831 USA.
Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Gonzalez, GB (reprint author), Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA.
RI Warschkow, Oliver/C-1507-2008; Mason, Thomas/B-7528-2009; Hodges,
Jason/K-1421-2013;
OI Hodges, Jason/0000-0003-3016-4578
NR 33
TC 126
Z9 126
U1 7
U2 43
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 OCT 1
PY 2004
VL 96
IS 7
BP 3912
EP 3920
DI 10.1063/1.1783610
PG 9
WC Physics, Applied
SC Physics
GA 857VB
UT WOS:000224145800053
ER
PT J
AU van der Weerd, J
Smith, GD
Firth, S
Clark, RJH
AF van der Weerd, J
Smith, GD
Firth, S
Clark, RJH
TI Identification of black pigments on prehistoric Southwest American
potsherds by infrared and Raman microscopy
SO JOURNAL OF ARCHAEOLOGICAL SCIENCE
LA English
DT Article
DE Raman microscopy; ancestral puebloan pottery; carbon-based pigments;
iron oxides
ID MICROPROBE SPECTROSCOPY; POTTERY FRAGMENTS; PAINTED POTTERY; ANCIENT;
GRAPHITE; MINERALS; SPECTRA; LIBRARY; CARBON
AB Raman and infrared microscopy have been used to characterise the black pigments on prehistoric Southwest American black-on-white pottery. Conclusive spectroscopic evidence for the use of carbon-based paints on these sherds has been provided using the Raman technique. Maghaemite (gamma-Fe(2)O(3)) and magnetite (Fe(3)O(4)), found alternatively or mixed with a carbonaceous pigment, were also identified on some sherds. Infrared measurements indicated that little, if any, organic material from biogenic precursors of the black pigment or from pigment binding agents remained in the paints. These spectroscopic results were obtained rapidly and nondestructively on unprepared samples, and the resulting data complement, and in some instances correct, paint type conclusions drawn from studies involving techniques such as XRD, SEM-EDX, and XPS. (C) 2004 Elsevier Ltd. All rights reserved.
C1 UCL, Christopher Ingold Labs, London WC1H 0AJ, England.
Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA.
RP Clark, RJH (reprint author), UCL, Christopher Ingold Labs, 20 Gordon St, London WC1H 0AJ, England.
EM r.j.h.clark@ucl.ac.uk
NR 32
TC 38
Z9 38
U1 2
U2 14
PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
PI LONDON
PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND
SN 0305-4403
J9 J ARCHAEOL SCI
JI J. Archaeol. Sci.
PD OCT
PY 2004
VL 31
IS 10
BP 1429
EP 1437
DI 10.1016/j.jas.2004.03.008
PG 9
WC Anthropology; Archaeology; Geosciences, Multidisciplinary
SC Anthropology; Archaeology; Geology
GA 848HN
UT WOS:000223458300008
ER
PT J
AU Hendrickson, EL
Kaul, R
Zhou, Y
Bovee, D
Chapman, P
Chung, J
de Macario, EC
Dodsworth, JA
Gillett, W
Graham, DE
Hackett, M
Haydock, AK
Kang, A
Land, ML
Levy, R
Lie, TJ
Major, TA
Moore, BC
Porat, I
Palmeiri, A
Rouse, G
Saenphimmachak, C
Soll, D
Van Dien, S
Wang, T
Whitman, WB
Xia, Q
Zhang, Y
Larimer, FW
Olson, MV
Leigh, JA
AF Hendrickson, EL
Kaul, R
Zhou, Y
Bovee, D
Chapman, P
Chung, J
de Macario, EC
Dodsworth, JA
Gillett, W
Graham, DE
Hackett, M
Haydock, AK
Kang, A
Land, ML
Levy, R
Lie, TJ
Major, TA
Moore, BC
Porat, I
Palmeiri, A
Rouse, G
Saenphimmachak, C
Soll, D
Van Dien, S
Wang, T
Whitman, WB
Xia, Q
Zhang, Y
Larimer, FW
Olson, MV
Leigh, JA
TI Complete genome sequence of the genetically tractable hydrogenotrophic
methanogen Methanococcus maripaludis
SO JOURNAL OF BACTERIOLOGY
LA English
DT Review
ID THERMOAUTOTROPHICUM DELTA-H; AMINO-ACID BIOSYNTHESIS;
METHANOBACTERIUM-THERMOAUTOTROPHICUM; ESCHERICHIA-COLI; CELL-CYCLE;
PYROCOCCUS-FURIOSUS; SULFOLOBUS-SOLFATARICUS; HETEROLOGOUS EXPRESSION;
FUNCTIONAL-ANALYSIS; DNA TOPOISOMERASES
AB The genome sequence of the genetically tractable, mesophilic, hydrogenotrophic methanogen Methanococcus maripaludis contains 1,722 protein-coding genes in a single circular chromosome of 1,661,137 bp. Of the protein-coding genes (open reading frames [ORFs]), 44% were assigned a function, 48% were conserved but had unknown or uncertain functions, and 7.5% (129 ORFs) were unique to M. maripaludis. Of the unique ORFs, 27 were confirmed to encode proteins by the mass spectrometric identification of unique peptides. Genes for most known functions and pathways were identified. For example, a full complement of hydrogenases and methanogenesis enzymes was identified, including eight selenocysteine-containing proteins, with each being paralogous to a cysteine-containing counterpart. At least 59 proteins were predicted to contain iron-sulfur centers, including ferredoxins, polyferredoxins, and subunits of enzymes with various redox functions. Unusual features included the absence of a Cdc6 homolog, implying a variation in replication initiation, and the presence of a bacterial-like RNase HI as well as an RNase HII typical of the Archaea. The presence of alanine dehydrogenase and alanine racemase, which are uniquely present among the Archaea, explained the ability of the organism to use L- and D-alanine as nitrogen sources. Features that contrasted with the related organism Methanocaldococcus jannaschii included the absence of inteins, even though close homologs of most intein-containing proteins were encoded. Although two-thirds of the ORFs had their highest Blastp hits in Methanocaldococcus jannaschii, lateral gene transfer or gene loss has apparently resulted in genes, which are often clustered, with top Blastp hits in more distantly related groups.
C1 Univ Washington, Dept Med, Div Med Genet, Genome Ctr, Seattle, WA 98195 USA.
Univ Washington, Dept Microbiol, Genome Ctr, Seattle, WA 98195 USA.
Univ Washington, Dept Chem Engn, Genome Ctr, Seattle, WA 98195 USA.
Univ Washington, Dept Genome Sci, Genome Ctr, Seattle, WA 98195 USA.
United Metab, Seattle, WA USA.
SUNY Albany, Wadsworth Ctr, New York State Dept Hlth, Div Mol Med, Albany, NY 12222 USA.
Univ Texas, Dept Chem & Biochem, Austin, TX 78712 USA.
Oak Ridge Natl Lab, Oak Ridge, TN USA.
Univ Georgia, Dept Microbiol, Athens, GA 30602 USA.
Yale Univ, Dept Mol Biophys & Biochem, New Haven, CT USA.
RP Leigh, JA (reprint author), Univ Washington, Dept Med, Div Med Genet, Genome Ctr, Seattle, WA 98195 USA.
EM leighj@u.washington.edu
RI Graham, David/F-8578-2010; Land, Miriam/A-6200-2011; Xia,
Qiangwei/E-5181-2010
OI Graham, David/0000-0001-8968-7344; Land, Miriam/0000-0001-7102-0031;
FU NIGMS NIH HHS [GM60403, R01 GM060403]
NR 128
TC 136
Z9 502
U1 4
U2 29
PU AMER SOC MICROBIOLOGY
PI WASHINGTON
PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA
SN 0021-9193
J9 J BACTERIOL
JI J. Bacteriol.
PD OCT
PY 2004
VL 186
IS 20
BP 6956
EP 6969
DI 10.1128/JB.186.20.6956-6969.2004
PG 14
WC Microbiology
SC Microbiology
GA 860SW
UT WOS:000224364500033
PM 15466049
ER
PT J
AU Sanishvili, R
Beasley, S
Skarina, T
Glesne, D
Joachimiak, A
Edwards, A
Savchenko, A
AF Sanishvili, R
Beasley, S
Skarina, T
Glesne, D
Joachimiak, A
Edwards, A
Savchenko, A
TI The crystal structure of Escherichia coli MoaB suggests a probable role
in molybdenum cofactor synthesis
SO JOURNAL OF BIOLOGICAL CHEMISTRY
LA English
DT Article
ID PROTEIN; BIOSYNTHESIS; MOLYBDOPTERIN; GEPHYRIN; REFINEMENT; DEFICIENCY;
RESOLUTION; INSIGHTS; ENZYMES; CLUSTER
AB The crystal structure of Escherichia coli MoaB was determined by multiwavelength anomalous diffraction phasing and refined at 1.6-Angstrom resolution. The molecule displayed a modified Rossman fold. MoaB is assembled into a hexamer composed of two trimers. The monomers have high structural similarity with two proteins, MogA and MoeA, from the molybdenum cofactor synthesis pathway in E. coli, as well as with domains of mammalian gephyrin and plant Cnx1, which are also involved in molybdopterin synthesis. Structural comparison between these proteins and the amino acid conservation patterns revealed a putative active site in MoaB. The structural analysis of this site allowed to advance several hypothesis that can be tested in further studies.
C1 Argonne Natl Lab, Biosci Struct Biol Ctr, Midwest Ctr Struct Genom, Argonne, IL 60439 USA.
Univ Hlth Network, Clin Genom Ctr Proteom, Toronto, ON M5G 1L7, Canada.
Argonne Natl Lab, Div Energy Syst, Argonne, IL 60439 USA.
Univ Toronto, Banting & Best Dept Med Res, Toronto, ON M5G 1L6, Canada.
RP Joachimiak, A (reprint author), Argonne Natl Lab, Biosci Struct Biol Ctr, Midwest Ctr Struct Genom, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM andrzejj@anl.gov
FU NIGMS NIH HHS [P50 GM062414-05, P50 GM062414]
NR 45
TC 11
Z9 13
U1 0
U2 0
PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA
SN 0021-9258
EI 1083-351X
J9 J BIOL CHEM
JI J. Biol. Chem.
PD OCT 1
PY 2004
VL 279
IS 40
BP 42139
EP 42146
DI 10.1074/jbc.M407694200
PG 8
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 856WG
UT WOS:000224075500106
PM 15269205
ER
PT J
AU Lio, YC
Schild, D
Brenneman, MA
Redpath, JL
Chen, DJ
AF Lio, YC
Schild, D
Brenneman, MA
Redpath, JL
Chen, DJ
TI Human Rad51C deficiency destabilizes XRCC3, impairs recombination, and
radiosensitizes S/G(2)-phase cells
SO JOURNAL OF BIOLOGICAL CHEMISTRY
LA English
DT Article
ID DOUBLE-STRAND BREAKS; POTENTIALLY LETHAL DAMAGE;
CULTURED-MAMMALIAN-CELLS; SMALL INTERFERING RNAS; DNA-REPAIR GENE;
HOMOLOGOUS RECOMBINATION; HELA-CELLS; CAENORHABDITIS-ELEGANS; CHROMOSOME
STABILITY; MOUSE GENES
AB The highly conserved Rad51 protein plays an essential role in repairing DNA damage through homologous recombination. In vertebrates, five Rad51 paralogs (Rad51B, Rad51C, Rad51D, XRCC2, and XRCC3) are expressed in mitotically growing cells and are thought to play mediating roles in homologous recombination, although their precise functions remain unclear. Among the five paralogs, Rad51C was found to be a central component present in two complexes, Rad51C-XRCC3 and Rad51B-Rad51C-Rad51D-XRCC2. We have shown previously that the human Rad51C protein exhibits three biochemical activities, including DNA binding, ATPase, and DNA duplex separation. Here we report the use of RNA interference to deplete expression of Rad51C protein in human HT1080 and HeLa cells. In HT1080 cells, depletion of Rad51C by small interfering RNA caused a significant reduction of frequency in homologous recombination. The level of XRCC3 protein was also sharply reduced in Rad51C-depleted HeLa cells, suggesting that XRCC3 is dependent for its stability upon heterodimerization with Rad51C. In addition, Rad51C-depleted HeLa cells showed hypersensitivity to the DNA-cross-linking agent mitomycin C and moderately increased sensitivity to ionizing radiation. Importantly, the radiosensitivity of Rad51C-deficient HeLa cells was evident in S and G(2)/M phases of the cell cycle but not in G(1) phase. Together, these results provide direct cellular evidence for the function of human Rad51C in homologous recombinational repair.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
Univ Calif Irvine, Dept Radiat Oncol, Irvine, CA 92697 USA.
Rutgers State Univ, Dept Genet, Piscataway, NJ 08854 USA.
RP Lio, YC (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, MS74-157,1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM YLio@lbl.gov
FU NCI NIH HHS [CA092584]; NIGMS NIH HHS [GM030990]
NR 69
TC 43
Z9 45
U1 0
U2 1
PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA
SN 0021-9258
J9 J BIOL CHEM
JI J. Biol. Chem.
PD OCT 1
PY 2004
VL 279
IS 40
BP 42313
EP 42320
DI 10.1074/jbc.M405212200
PG 8
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 856WG
UT WOS:000224075500123
PM 15292210
ER
PT J
AU Bhattacharyya, MH
Regunathan, A
Glesne, DA
Ebert-McNeill, A
AF Bhattacharyya, MH
Regunathan, A
Glesne, DA
Ebert-McNeill, A
TI Gene expression microarray-based hypothesis for cadmium-induced bone
loss.
SO JOURNAL OF BONE AND MINERAL RESEARCH
LA English
DT Meeting Abstract
CT 26th Annual Meeting of the
American-Society-for-Bone-and-Mineral-Research
CY OCT 01-05, 2004
CL Seattle, WA
SP Amer Soc Bone & Mineral Res
C1 Argonne Natl Lab, Biosci Div, Argonne, IL USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER SOC BONE & MINERAL RES
PI WASHINGTON
PA 2025 M ST, N W, STE 800, WASHINGTON, DC 20036-3309 USA
SN 0884-0431
J9 J BONE MINER RES
JI J. Bone Miner. Res.
PD OCT
PY 2004
VL 19
SU 1
BP S118
EP S118
PG 1
WC Endocrinology & Metabolism
SC Endocrinology & Metabolism
GA 860FB
UT WOS:000224326800461
ER
PT J
AU Burton, DW
Hillegonds, DJ
Fitzgerald, RL
Herold, DA
Deftos, LJ
AF Burton, DW
Hillegonds, DJ
Fitzgerald, RL
Herold, DA
Deftos, LJ
TI Pharmacokinetics of Ca-41 distribution in mice.
SO JOURNAL OF BONE AND MINERAL RESEARCH
LA English
DT Meeting Abstract
CT 26th Annual Meeting of the
American-Society-for-Bone-and-Mineral-Research
CY OCT 01-05, 2004
CL Seattle, WA
SP Amer Soc Bone & Mineral Res
C1 Univ Calif San Diego, San Diego, CA 92103 USA.
SDVAMC, San Diego, CA 92103 USA.
Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA USA.
NR 0
TC 1
Z9 1
U1 0
U2 0
PU AMER SOC BONE & MINERAL RES
PI WASHINGTON
PA 2025 M ST, N W, STE 800, WASHINGTON, DC 20036-3309 USA
SN 0884-0431
J9 J BONE MINER RES
JI J. Bone Miner. Res.
PD OCT
PY 2004
VL 19
SU 1
BP S239
EP S239
PG 1
WC Endocrinology & Metabolism
SC Endocrinology & Metabolism
GA 860FB
UT WOS:000224326801311
ER
PT J
AU Fitzgerald, RL
Griffin, TL
Hillegonds, DJ
Burton, DW
Deftos, LJ
Mullaney, S
Vogel, J
Herold, DA
AF Fitzgerald, RL
Griffin, TL
Hillegonds, DJ
Burton, DW
Deftos, LJ
Mullaney, S
Vogel, J
Herold, DA
TI Direct measurement of bone turnover using Ca-41
SO JOURNAL OF BONE AND MINERAL RESEARCH
LA English
DT Meeting Abstract
CT 26th Annual Meeting of the
American-Society-for-Bone-and-Mineral-Research
CY OCT 01-05, 2004
CL Seattle, WA
SP Amer Soc Bone & Mineral Res
C1 Univ Calif San Diego, San Diego, CA 92103 USA.
SDVAMC, San Diego, CA 92103 USA.
Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94550 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER SOC BONE & MINERAL RES
PI WASHINGTON
PA 2025 M ST, N W, STE 800, WASHINGTON, DC 20036-3309 USA
SN 0884-0431
J9 J BONE MINER RES
JI J. Bone Miner. Res.
PD OCT
PY 2004
VL 19
SU 1
BP S114
EP S114
PG 1
WC Endocrinology & Metabolism
SC Endocrinology & Metabolism
GA 860FB
UT WOS:000224326800445
ER
PT J
AU Kneissel, M
Keller, HJ
Baptist, M
Rubin, EM
Loots, GG
AF Kneissel, M
Keller, HJ
Baptist, M
Rubin, EM
Loots, GG
TI Van buchem disease mouse models and genomic comparisons reveal a
bone-specific enhancer regulating sclerosteosis causing gene SOST.
SO JOURNAL OF BONE AND MINERAL RESEARCH
LA English
DT Meeting Abstract
CT 26th Annual Meeting of the
American-Society-for-Bone-and-Mineral-Research
CY OCT 01-05, 2004
CL Seattle, WA
SP Amer Soc Bone & Mineral Res
C1 Novartis Inst BioMed Res, Basel, Switzerland.
JGI, Walnut Creek, CA USA.
LLNL, Genom Div, Livermore, CA USA.
NR 0
TC 0
Z9 0
U1 2
U2 2
PU AMER SOC BONE & MINERAL RES
PI WASHINGTON
PA 2025 M ST, N W, STE 800, WASHINGTON, DC 20036-3309 USA
SN 0884-0431
J9 J BONE MINER RES
JI J. Bone Miner. Res.
PD OCT
PY 2004
VL 19
SU 1
BP S21
EP S21
PG 1
WC Endocrinology & Metabolism
SC Endocrinology & Metabolism
GA 860FB
UT WOS:000224326800080
ER
PT J
AU Davis, HF
Shu, JN
Peterka, DS
Ahmed, M
AF Davis, HF
Shu, JN
Peterka, DS
Ahmed, M
TI Crossed beams study of the reaction (CH2)-C-1+C2H2 -> C3H3+H
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID LASER-ABSORPTION SPECTROSCOPY; A1A1 REMOVAL RATES; MOLECULAR-BEAM;
TEMPERATURE DEPENDENCES; PROPARGYL RADICALS; STATE DISTRIBUTION; SINGLET
METHYLENE; MASTER EQUATION; RATE CONSTANTS; SELF-REACTION
AB The reaction of electronically excited singlet methylene ((CH2)-C-1) with acetylene (C2H2) was studied using the method of crossed molecular beams at a mean collision energy of 3.0 kcal/mol. The angular and velocity distributions of the propargyl radical (C3H3) products were measured using single photon ionization (9.6 eV) at the advanced light source. The measured distributions indicate that the mechanism involves formation of a long-lived C3H4 complex followed by simple C-H bond fission producing C3H3+H. This work, which is the first crossed beams study of a reaction involving an electronically excited polyatomic molecule, demonstrates the feasibility of crossed molecular beam studies of reactions involving (CH2)-C-1. (C) 2004 American Institute of Physics.
C1 Cornell Univ, Dept Chem & Biol Chem, Ithaca, NY 14853 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
RP Davis, HF (reprint author), Cornell Univ, Dept Chem & Biol Chem, Ithaca, NY 14853 USA.
RI Ahmed, Musahid/A-8733-2009
NR 49
TC 23
Z9 23
U1 2
U2 8
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD OCT 1
PY 2004
VL 121
IS 13
BP 6254
EP 6257
DI 10.1063/1.1785152
PG 4
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 857VE
UT WOS:000224146300015
PM 15446918
ER
PT J
AU Osterwalder, A
Nee, MJ
Zhou, J
Neumark, DM
AF Osterwalder, A
Nee, MJ
Zhou, J
Neumark, DM
TI High resolution photodetachment spectroscopy of negative ions via slow
photoelectron imaging
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID FLIGHT MASS-SPECTROMETER; INITIO POTENTIAL-ENERGY; INFRARED-SPECTRA;
TRANSITION-STATE; CLUSTER ANIONS; ELECTRONIC-STRUCTURE; COMPLEXES;
SURFACES; DYNAMICS; IODINE
AB A technique for high resolution anion photodetachment spectroscopy is presented that combines velocity map imaging and anion threshold photodetachment. This method, slow electron velocity-map imaging, provides spectral line widths of better than 1 meV. Spectra over a substantial range of electron kinetic energies are recorded in a single image, providing a dramatic reduction of data acquisition time compared to other techniques with comparable resolution. We apply this technique to atomic iodine and the van der Waals cluster I.CO2 as test systems, and then to the prereactive Cl.D-2 complex where partially resolved structure assigned to hindered rotor motion is observed. (C) 2004 American Institute of Physics.
C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
RP Neumark, DM (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
EM dan@radon.cchem.berkeley.edu
RI Neumark, Daniel/B-9551-2009; Osterwalder, Andreas/E-5460-2015
OI Neumark, Daniel/0000-0002-3762-9473;
NR 40
TC 117
Z9 118
U1 5
U2 44
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD OCT 1
PY 2004
VL 121
IS 13
BP 6317
EP 6322
DI 10.1063/1.1787491
PG 6
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 857VE
UT WOS:000224146300024
PM 15446927
ER
PT J
AU Yu, HG
AF Yu, HG
TI Converged quantum dynamics calculations of vibrational energies of CH4
and CH3D using an ab initio potential
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID VARIATIONAL CALCULATIONS; ROVIBRATIONAL ENERGIES; FORCE-FIELD; LANCZOS
CALCULATION; METHANE; MOLECULES; ISOTOPOMERS; SPECTRUM; STATES; MODEL
AB Exact variational calculations of vibrational energies of CH4 and CH3D are carried out using a two-layer Lanczos algorithm based on the ab initio potential energy surface of D. W. Schwenke and H. Partridge, Spectrochim. Acta, Part A 57, 887 (2001). The convergence of the calculated vibrational energies is discussed in detail. In addition, we report all well converged vibrational energy levels up to 6600 cm(-1) for CH4, and those up to 5000 cm(-1) for CH3D, respectively. These results clearly outperform previous theoretical calculations. And a comparison with experimental results available is also made. (C) 2004 American Institute of Physics.
C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
RP Yu, HG (reprint author), Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
EM hgy@bnl.gov
RI Yu, Hua-Gen/N-7339-2015
NR 37
TC 47
Z9 48
U1 0
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 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD OCT 1
PY 2004
VL 121
IS 13
BP 6334
EP 6340
DI 10.1063/1.1789133
PG 7
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 857VE
UT WOS:000224146300026
PM 15446929
ER
PT J
AU McLain, SE
Benmore, CJ
Siewenie, JE
Molaison, JJ
Turner, JFC
AF McLain, SE
Benmore, CJ
Siewenie, JE
Molaison, JJ
Turner, JFC
TI On the variation of the structure of liquid deuterium fluoride with
temperature
SO JOURNAL OF CHEMICAL PHYSICS
LA English
DT Article
ID NEGATIVE-THERMAL-EXPANSION; HYDROGEN-BONDED LIQUIDS;
COMPUTER-SIMULATION; POTENTIAL MODEL; NEUTRON-DIFFRACTION;
MOLECULAR-STRUCTURE; SELF-DIFFUSION; PHASE-BEHAVIOR; HF; DYNAMICS
AB The structure of liquid deuterium fluoride has been measured using pulsed neutron diffraction and high energy x-ray diffraction techniques as a function of temperature. The neutron experiments were performed at T=296+/-2 K, 246+/-2 K, and 193+/-2 K and the x-ray measurements carried out at 296+/-2 K and 195+/-2 K. The x-ray pair correlation functions, which are dominated by fluorine-fluorine interactions, show the first peak at similar to2.53+/-0.05 Angstrom remains very nearly invariant with decreasing temperature. Peaks around 4.5 and 5.0 Angstrom also appear at both temperatures in the x-ray data. In contrast, the intermolecular peaks in the total neutron pair correlation function show that significant systematic local structural changes occur as the temperature is lowered. The first intermolecular peak position shortens from 1.64+/-0.05 AAngstrom at 296 K to 1.56+/-0.05 AAngstrom at 195 K. Although there are overlapping contributions from the intermolecular hydrogen-fluorine and hydrogen-hydrogen correlations, it is clear that the temperature dependent structural changes are largely due to a rearrangement of the deuterium atom positions in the fluid. By comparison with partial structure factor data the hydrogen bonds appear to become more linear at lower temperatures. (C) 2004 American Institute of Physics.
C1 Univ Tennessee, Natl Sci Consortium, Knoxville, TN 37996 USA.
Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA.
Argonne Natl Lab, Intense Pulsed Neutron Source, Argonne, IL 60439 USA.
RP Turner, JFC (reprint author), Univ Tennessee, Natl Sci Consortium, Knoxville, TN 37996 USA.
EM jturner@atom.chem.utk.edu
OI McLain, Sylvia/0000-0002-3347-7759; Benmore, Chris/0000-0001-7007-7749
NR 64
TC 8
Z9 8
U1 0
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 0021-9606
J9 J CHEM PHYS
JI J. Chem. Phys.
PD OCT 1
PY 2004
VL 121
IS 13
BP 6448
EP 6455
DI 10.1063/1.1790432
PG 8
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 857VE
UT WOS:000224146300041
PM 15446944
ER
PT J
AU Steele, WV
Chirico, RD
Knipmeyer, SE
Nguyen, A
AF Steele, WV
Chirico, RD
Knipmeyer, SE
Nguyen, A
TI Possible precursors and products of deep hydrodesulfurization of
gasoline and distillate fuels IV. Heat capacities, enthalpy increments,
vapor pressures, and derived thermodynamic functions for
dicyclohexylsulfide between the temperatures (5 and 520) K
SO JOURNAL OF CHEMICAL THERMODYNAMICS
LA English
DT Article
DE dicyclohexylsulfide; enthalpy of combustion; heat capacity; vapor
pressure; density; thermodynamic functions; ideal-gas properties
ID 3RD VIRIAL-COEFFICIENT; XYLENE ISOMERIZATION; RECOMMENDED VALUES; PART
2; EQUILIBRIA; DENSITIES; DIBENZOTHIOPHENE; RECONCILIATION; BENZENE
AB Measurements leading to the calculation of the standard thermodynamic properties for gaseous dicyclohexylsulfide (Chemical Abstracts registry number [7133-46-2]) are reported. Experimental methods include adiabatic heat-capacity calorimetry, and inclined-piston gauge manometry combined with earlier reported measurements of combustion calorimetry, vibrating-tube densitometry, comparative ebulliometry, and differential-scanning calorimetry (d.s.c.). Critical properties are estimated for dicyclohexylsulfide. Standard molar entropies, standard molar enthalpies, and standard molar Gibbs free energies of formation are derived at selected temperatures between (298.15 and 520) K. (C) 2004 Elsevier Ltd. All rights reserved.
C1 Univ Tennessee, Dept Chem Engn, Phys Properties Res Facil, Knoxville, TN 37996 USA.
Oak Ridge Natl Lab, Nucl Sci & Technol Div, Oak Ridge, TN 37831 USA.
Natl Inst Stand & Technol, Thermodynam Res Ctr, Chem Sci & Technol Lab, Phys & Chem Properties Div, Boulder, CO 80305 USA.
BDM Petr Technol, Bartlesville Thermodynam Grp, Bartlesville, OK 74005 USA.
RP Steele, WV (reprint author), Univ Tennessee, Dept Chem Engn, Phys Properties Res Facil, 327 Dougherty Engn Bldg,1512 Middle Dr, Knoxville, TN 37996 USA.
EM steelewv@ornl.gov; chirico@boulder.nist.gov
NR 39
TC 4
Z9 4
U1 0
U2 4
PU ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD
PI LONDON
PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND
SN 0021-9614
J9 J CHEM THERMODYN
JI J. Chem. Thermodyn.
PD OCT
PY 2004
VL 36
IS 10
BP 845
EP 855
DI 10.1016/j.jct.2003.11.012
PG 11
WC Thermodynamics; Chemistry, Physical
SC Thermodynamics; Chemistry
GA 858UP
UT WOS:000224217800002
ER
PT J
AU Van Benthem, MH
Keenan, MR
AF Van Benthem, MH
Keenan, MR
TI Fast algorithm for the solution of large-scale
non-negativity-constrained least squares problems
SO JOURNAL OF CHEMOMETRICS
LA English
DT Article
DE NNLS; non-negativity; MCR; ALS
ID MODELING CURVE RESOLUTION
AB Algorithms for multivariate image analysis and other large-scale applications of multivariate curve resolution (MCR) typically employ constrained alternating least squares (ALS) procedures in their solution. The solution to a least squares problem under general linear equality and inequality constraints can be reduced to the solution of a non-negativity-constrained least squares (NNLS) problem. Thus the efficiency of the solution to any constrained least square problem rests heavily on the underlying NNLS algorithm. We present a new NNLS solution algorithm that is appropriate to large-scale MCR and other ALS applications. Our new algorithm rearranges the calculations in the standard active set NNLS method on the basis of combinatorial reasoning. This rearrangement serves to reduce substantially the computational burden required for NNLS problems having large numbers of observation vectors. Copyright (C) 2005 John Wiley & Sons, Ltd.
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Keenan, MR (reprint author), Sandia Natl Labs, MS0886, Albuquerque, NM 87185 USA.
EM mrkeena@sandia.gov
NR 12
TC 83
Z9 84
U1 0
U2 8
PU JOHN WILEY & SONS LTD
PI CHICHESTER
PA THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND
SN 0886-9383
J9 J CHEMOMETR
JI J. Chemometr.
PD OCT
PY 2004
VL 18
IS 10
BP 441
EP 450
DI 10.1002/cem.889
PG 10
WC Automation & Control Systems; Chemistry, Analytical; Computer Science,
Artificial Intelligence; Instruments & Instrumentation; Mathematics,
Interdisciplinary Applications; Statistics & Probability
SC Automation & Control Systems; Chemistry; Computer Science; Instruments &
Instrumentation; Mathematics
GA 919IN
UT WOS:000228611800002
ER
PT J
AU Delire, C
Foley, JA
Thompson, S
AF Delire, C
Foley, JA
Thompson, S
TI Long-term variability in a coupled atmosphere-biosphere model
SO JOURNAL OF CLIMATE
LA English
DT Article
ID LOW-FREQUENCY VARIABILITY; COMMUNITY CLIMATE MODEL; LAND-SURFACE
PROCESSES; TRANSFER SCHEME LSX; VEGETATION FEEDBACKS; WATER-BALANCE;
STOMATAL CONDUCTANCE; CARBON BALANCE; UNITED-STATES; SAHEL
AB A fully coupled atmosphere-biosphere model, version 3 of the NCAR Community Climate Model (CCM3) and the Integrated Biosphere Simulator (IBIS), is used to illustrate how vegetation dynamics may be capable of producing long-term variability in the climate system, particularly through the hydrologic cycle and precipitation. Two simulations of the global climate are conducted with fixed climatological sea surface temperatures: one including vegetation as a dynamic boundary condition, and the other keeping vegetation cover fixed. A comparison of the precipitation power spectra over land from these two simulations shows that dynamic interactions between the atmosphere and vegetation enhance precipitation variability at time scales from a decade to a century, while damping variability at shorter time scales.
In these simulations, the two-way coupling between the atmosphere and the dynamic vegetation cover introduces persistent precipitation anomalies in several ecological transition zones: between forest and grasslands in the North American midwest, in southern Africa, and at the southern limit of the tropical forest in the Amazon basin, and between savanna and desert in the Sahel, Australia, and portions of the Arabian Peninsula. These regions contribute most to the long-term variability of the atmosphere-vegetation system.
Slow changes in the vegetation cover, resulting from a "red noise'' integration of high-frequency atmospheric variability, are responsible for generating this long-term variability. Lead and lag correlation between precipitation and vegetation leaf area index (LAI) shows that LAI influences precipitation in the following years, and vice versa. A mechanism involving changes in LAI resulting in albedo, roughness, and evapotranspiration changes is proposed.
C1 Univ Montpellier 2, Inst Sci Evolut, F-34095 Montpellier 5, France.
Univ Wisconsin, Gaylord Nelson Inst Environm Studies, Ctr Sustainabil & Global Environm, Madison, WI USA.
Lawrence Livermore Natl Lab, Livermore, CA USA.
RP Univ Montpellier 2, Inst Sci Evolut, CC 061,Pl E Bataillon, F-34095 Montpellier 5, France.
EM delire@isem.univ-montp2.fr
NR 52
TC 40
Z9 40
U1 0
U2 5
PU AMER METEOROLOGICAL SOC
PI BOSTON
PA 45 BEACON ST, BOSTON, MA 02108-3693 USA
SN 0894-8755
EI 1520-0442
J9 J CLIMATE
JI J. Clim.
PD OCT
PY 2004
VL 17
IS 20
BP 3947
EP 3959
DI 10.1175/1520-0442(2004)017<3947:LVIACA>2.0.CO;2
PG 13
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 863UE
UT WOS:000224588000006
ER
PT J
AU Oliveira, JS
Jones-Oliveira, JB
Dixon, DA
Bailey, CG
Gull, DW
AF Oliveira, JS
Jones-Oliveira, JB
Dixon, DA
Bailey, CG
Gull, DW
TI Hyperdigraph-theoretic analysis of the EGFR signaling network: Initial
steps leading to GTP : Ras complex formation
SO JOURNAL OF COMPUTATIONAL BIOLOGY
LA English
DT Article
DE epidermal growth factor receptor (EGFR); cell signaling; biochemical
pathways; network; GTP : RAS; complex formation; algebraic-combinatorial
model; pinch points; distributions; Petri nets; hyperdigraphs;
invariants; minimal circuits
ID BIOCHEMICAL REACTION SYSTEMS; GROWTH-FACTOR RECEPTOR; INTERNALIZATION;
PATHWAYS; MODEL; IDENTIFICATION; ENDOCYTOSIS; METABOLISM; BINDING
AB We construct an algebraic-combinatorial model of the SOS compartment of the EGFR biochemical network. A Petri net is used to construct an initial representation of the biochemical decision making network, which in turn defines a hyperdigraph. We observe that the linear algebraic structure of each hyperdigraph admits a canonical set of algebraic-combinatorial invariants that correspond to the information flow conservation laws governing a molecular kinetic reaction network. The linear algebraic structure of the hyperdigraph and its sets of invariants can be generalized to define a discrete algebraic-geometric structure, which is referred to as an oriented matroid. Oriented matroids define a polyhedral optimization geometry that is used to determine optimal subpaths that span the nullspace of a set of kinetic chemical reaction equations. Sets of constrained submodular path optimizations on the hyperdigraph are objectively obtained as a spanning tree of minimum cycle paths. This complete set of subcircuits is used to identify the network pinch points and invariant flow subpaths. We demonstrate that this family of minimal circuits also characteristically identifies additional significant biochemical reaction pattern features. We use the SOS Compartment A of the EGFR biochemical pathway to develop and demonstrate the application of our algebraic-combinatorial mathematical modeling methodology.
C1 Pacific NW Natl Lab, William R Wiley Environm Mol Sci Lab, Richland, WA 99352 USA.
Univ Alabama, Dept Chem, Tuscaloosa, AL 35487 USA.
Victoria Univ Wellington, Sch Math & Comp Sci, Wellington, New Zealand.
RP Jones-Oliveira, JB (reprint author), Pacific NW Natl Lab, William R Wiley Environm Mol Sci Lab, POB 999,MS K8-41, Richland, WA 99352 USA.
EM jjo@pnl.gov
NR 30
TC 7
Z9 8
U1 0
U2 1
PU MARY ANN LIEBERT INC
PI LARCHMONT
PA 2 MADISON AVENUE, LARCHMONT, NY 10538 USA
SN 1066-5277
J9 J COMPUT BIOL
JI J. Comput. Biol.
PD OCT
PY 2004
VL 11
IS 5
BP 812
EP 842
DI 10.1089/1066527042432189
PG 31
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 870WZ
UT WOS:000225090800003
PM 15700404
ER
PT J
AU Liu, HH
Salve, R
Wang, JS
Bodvarsson, GS
Hudson, D
AF Liu, HH
Salve, R
Wang, JS
Bodvarsson, GS
Hudson, D
TI Field investigation into unsaturated flow and transport in a fault:
model analyses
SO JOURNAL OF CONTAMINANT HYDROLOGY
LA English
DT Article
DE fault; matrix; fracture
ID YUCCA MOUNTAIN; TRACER TESTS; FRACTURED ROCKS; SOLUTE TRANSPORT; MATRIX
DIFFUSION; MASS-TRANSFER; POROUS-MEDIA; SEEPAGE; POROSITY; NEVADA
AB Results of a fault test performed in the unsaturated zone of Yucca Mountain, Nevada, were analyzed using a three-dimensional numerical model. The fault was explicitly represented as a discrete feature and the surrounding rock was treated as a dual-continuum (fracture-matrix) system. Model calibration against seepage and water-travel-velocity data suggests that lithophysal cavities connected to fractures can considerably enhance the effective fracture porosity and therefore retard water flow in fractures. Comparisons between simulation results and tracer concentration data also indicate that matrix diffusion is an important mechanism for solute transport in unsaturated fractured rock. We found that an increased fault-matrix and fracture-matrix interface areas were needed to match the observed tracer data, which is consistent with previous studies. The study results suggest that the current site-scale model for the unsaturated zone of Yucca Mountain may underestimate radionuclide transport time within the unsaturated zone, because an increased fracture-matrix interface area and the increased effective fracture porosity arising from lithophysal cavities are not considered in the current site-scale model. (C) 2004 Published by Elsevier B.V.
C1 Lawrence Berkeley Lab, Earth Sci Div, Berkeley, CA 94720 USA.
US Geol Survey, Sacramento, CA USA.
RP Lawrence Berkeley Lab, Earth Sci Div, 1 Cyclotron Rd Mailstop 90-1116, Berkeley, CA 94720 USA.
EM hhliu@lbl.gov
NR 45
TC 12
Z9 12
U1 0
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0169-7722
EI 1873-6009
J9 J CONTAM HYDROL
JI J. Contam. Hydrol.
PD OCT
PY 2004
VL 74
IS 1-4
BP 39
EP 59
DI 10.1016/j.jconhyd.2004.02.004
PG 21
WC Environmental Sciences; Geosciences, Multidisciplinary; Water Resources
SC Environmental Sciences & Ecology; Geology; Water Resources
GA 858IW
UT WOS:000224186500003
PM 15358486
ER
PT J
AU Candia, J
Roulet, E
AF Candia, J
Roulet, E
TI Diffusion and drift of cosmic rays in highly turbulent magnetic fields
SO JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
LA English
DT Article
DE cosmic rays; magnetic fields
ID CHARGED-PARTICLES; PERPENDICULAR DIFFUSION; VELOCITY CORRELATION;
PROPAGATION; TRANSPORT; SPECTRUM
AB We determine numerically the parallel, perpendicular and antisymmetric diffusion coefficients for charged particles propagating in highly turbulent magnetic fields, by means of extensive Monte Carlo simulations. We propose simple expressions, given in terms of a small set of fitting parameters, to account for the diffusion coefficients as functions of magnetic rigidity and turbulence level, and corresponding to different kinds of turbulence spectra. The results obtained satisfy scaling relations, which make them useful for describing the cosmic ray origin and transport in a variety of different astrophysical environments.
C1 Natl Univ La Plata, Dept Fis, IFLP, RA-1900 La Plata, Argentina.
Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
Ctr Atom Bariloche, CONICET, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina.
RP Natl Univ La Plata, Dept Fis, IFLP, CC 67, RA-1900 La Plata, Argentina.
EM candia@fisica.unlp.edu.ar; roulet@cab.cnea.gov.ar
OI Candia, Julian/0000-0001-5793-8989
NR 31
TC 32
Z9 32
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1475-7516
J9 J COSMOL ASTROPART P
JI J. Cosmol. Astropart. Phys.
PD OCT
PY 2004
IS 10
AR 007
DI 10.1088/1475-7516/2004/10/007
PG 14
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 866TS
UT WOS:000224796800010
ER
PT J
AU Chacko, Z
Hall, LJ
Nomura, Y
AF Chacko, Z
Hall, LJ
Nomura, Y
TI Acceleressence: dark energy from a phase transition at the seesaw scale
SO JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
LA English
DT Article
DE dark energy theory; cosmological phase transitions; cosmology of
theories beyond the SM
ID INVERSE-SQUARE LAW; DYNAMICAL SUPERSYMMETRY BREAKING; COSMOLOGICAL
CONSTANT; DIMENSIONS; SUPERNOVAE; UNIVERSE; TESTS
AB Simple models are constructed for 'acceleressence' dark energy: the latent heat of a phase transition occurring in a hidden sector governed by the seesaw mass scale v(2)/M-Pl, where v is the electroweak scale and M-Pl the gravitational mass scale. In our models, the seesaw scale is stabilized by supersymmetry, implying that the LHC must discover superpartners with a spectrum that reflects a low scale of fundamental supersymmetry breaking. Newtonian gravity may be modified by effects arising from the exchange of fields in the acceleressence sector whose Compton wavelengths are typically of order the millimetre scale. There are two classes of models. In the first class the universe is currently in a metastable vacuum and will continue to in. ate until tunnelling processes eventually induce a first-order transition. In the simplest such model, the range of the new force is bounded to be larger than 25 mum in the absence of fine-tuning of parameters, and for couplings of order unity it is expected to be approximate to100 mum. In the second class of models thermal effects maintain the present vacuum energy of the universe, but on further cooling, the universe will 'soon' smoothly relax to a matter dominated era. In this case, the range of the new force is also expected to be of order the millimetre scale or larger, although its strength is uncertain. A firm prediction of this class of models is the existence of additional energy density in radiation at the eV era, which can potentially be probed in precision measurements of the cosmic microwave background. An interesting possibility is that the transition towards a matter dominated era has occurred in the very recent past, with the consequence that the universe is currently decelerating.
C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Theoret Phys Grp, Berkeley, CA 94720 USA.
RP Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM zchacko@thsrv.lbl.gov; ljhall@lbl.gov; ynomura@lbl.gov
OI Nomura, Yasunori/0000-0002-1497-1479
NR 39
TC 8
Z9 8
U1 0
U2 0
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 1475-7516
J9 J COSMOL ASTROPART P
JI J. Cosmol. Astropart. Phys.
PD OCT
PY 2004
IS 10
AR 011
DI 10.1088/1475-7516/2004/10/011
PG 10
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 866TS
UT WOS:000224796800006
ER
PT J
AU McCarty, KF
Bartelt, NC
AF McCarty, KF
Bartelt, NC
TI Crystal growth rate limited by step length - the case of
oxygen-deficient TiO2 exposed to oxygen
SO JOURNAL OF CRYSTAL GROWTH
LA English
DT Article
DE growth models; growth from vapor; oxides
ID TIO2(110) SURFACE; SIZE DISTRIBUTIONS; ADATOM CAPTURE; TEMPERATURE;
RUTILE; ISLAND; THERMODYNAMICS; NUCLEATION; MICROSCOPY; KINETICS
AB We study how an oxygen-deficient crystal of TiO2 crystal grows when exposed to O-2. While the O flux is external to the crystal, the Ti flux necessary for growth comes from internal (bulk) interstitials (Phys. Rev. Lett. 76 (1996) 791). We address where the reaction between 0 and Ti to form new crystal takes place in the regime of pure step flow (i.e., surface steps advancing without new-layers nucleating). The detailed partitioning of the growth flux among individual surface steps is studied using low-energy electron microscopy for two geometries on the (110) surface-an array of islands on a terrace and an island stack generated from a dislocation source. For both geometries, the areas of islands larger than the critical size grow at rates strictly proportional to their perimeter length, independent of the local step configuration. In addition, we find that the growth rate is proportional to the O-2 pressure. The step flow represents a simple limiting case of crystal growth (Phil. Trans. R. Soc. A. 243 (1951) 299)-only the growth species near a step edge becomes incorporated into the crystal. That is, only Ti and O reactions near the step edge lead to crystal growth. This case is in marked contrast to crystal growth controlled by species attaching to terraces and diffusing to steps, for which the growth rates depend upon the local step environment. indeed, simulating the island array as if the growth flux was partitioned among the individual islands by concentration gradients (i.e., diffusion-controlled growth) totally failed to reproduce the experimental rates. (C) 2004 Elsevier B.V. All rights reserved.
C1 Sandia Natl Labs, Livermore, CA 94551 USA.
RP McCarty, KF (reprint author), Sandia Natl Labs, POB 969,MS 9161, Livermore, CA 94551 USA.
EM mccarty@sandia.gov
RI McCarty, Kevin/F-9368-2012; Bartelt, Norman/G-2927-2012
OI McCarty, Kevin/0000-0002-8601-079X;
NR 31
TC 6
Z9 6
U1 1
U2 12
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-0248
J9 J CRYST GROWTH
JI J. Cryst. Growth
PD OCT 1
PY 2004
VL 270
IS 3-4
BP 691
EP 698
DI 10.1016/j.jcrysgro.2004.06.041
PG 8
WC Crystallography; Materials Science, Multidisciplinary; Physics, Applied
SC Crystallography; Materials Science; Physics
GA 859TF
UT WOS:000224290100056
ER
PT J
AU Mannella, N
Marchesini, S
Kay, AW
Nambu, A
Gresch, T
Yang, SH
Mun, BS
Bussat, JM
Rosenhahn, A
Fadley, CS
AF Mannella, N
Marchesini, S
Kay, AW
Nambu, A
Gresch, T
Yang, SH
Mun, BS
Bussat, JM
Rosenhahn, A
Fadley, CS
TI Correction of non-linearity effects in detectors for electron
spectroscopy
SO JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA
LA English
DT Article
DE photoemission spectra; electron spectroscopy; detectors; non-linearity
effects
ID ATOM RESONANT PHOTOEMISSION; COUNTING SYSTEMS; LINEARITY; TIME
AB Using photoemission intensities and a detection system employed by many groups in the electron spectroscopy community as an example, we have quantitatively characterized and corrected detector non-linearity effects over the full dynamic range of the system. Non-linearity effects are found to be important whenever measuring relative peak intensities accurately is important, even in the low countrate regime. This includes, for example, performing quantitative analysis for surface contaminants or sample bulk stoichiometries, where the peak intensities involved can differ by one or two orders of magnitude, and thus could occupy a significant portion of the detector dynamic range. Two successful procedures for correcting non-linearity effects are presented. The first one yields directly the detector efficiency by measuring a flat-background reference intensity as a function of incident X-ray flux, while the second one determines the detector response from a least-squares analysis of broad-scan survey spectra at different incident X-ray fluxes. Although we have used one spectrometer and detection system as an example, these methodologies should be useful for many other cases. (C) 2004 Elsevier B.V. All rights reserved.
C1 Univ Calif Davis, Dept Phys, Davis, CA 95616 USA.
LBNL, Div Sci Mat, Berkeley, CA USA.
Univ Tokyo, Dept Chem, Tokyo 113, Japan.
Univ Zurich, Inst Phys, Zurich, Switzerland.
LBNL, Div Engn, Berkeley, CA USA.
RP Mannella, N (reprint author), Lawrence Berkeley Lab, MS7-100-1 Cyclotron Rd, Berkeley, CA USA.
EM NMannella@lbl.gov
RI Marchesini, Stefano/A-6795-2009; Rosenhahn, Axel/F-7319-2011; Mun,
Bongjin /G-1701-2013
OI Rosenhahn, Axel/0000-0001-9393-7190;
NR 18
TC 19
Z9 19
U1 1
U2 5
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0368-2048
J9 J ELECTRON SPECTROSC
JI J. Electron Spectrosc. Relat. Phenom.
PD OCT
PY 2004
VL 141
IS 1
BP 45
EP 59
DI 10.1016/j.elspec.2004.03.009
PG 15
WC Spectroscopy
SC Spectroscopy
GA 863XZ
UT WOS:000224598200006
ER
PT J
AU DeWald, AT
Rankin, JE
Hill, MR
Lee, MJ
Chen, HL
AF DeWald, AT
Rankin, JE
Hill, MR
Lee, MJ
Chen, HL
TI Assessment of tensile residual stress mitigation in Alloy 22 welds due
to laser peening
SO JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME
LA English
DT Article
ID CONFINED GEOMETRY; ALUMINUM-ALLOYS; WAVES; GENERATION; COATINGS;
SURFACES; PLASMA
AB This paper examines the effects of laser peening on Alloy 22 (UNS N06022), which is the proposed material for use as the outer layer on the spent-fuel nuclear waste canisters to be stored at Yucca Mountain. Stress corrosion cracking (SCC) is a primary concern in the design of these canisters because tensile residual stresses will be left behind by the closure weld. Alloy 22 is a nickel-based material that is particularly resistant to corrosion; however there is a chance that stress corrosion cracking could develop given the right environmental conditions. Laser peening is an emerging surface treatment technology that has been identified as an effective tool for mitigating tensile redisual stresses in the storage canisters. The results of laser-peening experiments on Alloy 22 base material and a sample 33 mm thick double-V groove butt-weld made with gas tungsten arc welding (GTAW) are presented. Residual stress profiles were measured in Alloy 22 base material using the slitting method (also known as the crack-compliance method), and a full 2D map of longitudinal residual stress was measured in the sample welds using the contour method. Laser peening was found to produce compressive residual stress to a depth of 3.8 mm in 20 mm thick base material coupons. The depth of compressive residual stress was found to have a, significant dependence on the number of peening layers and a slight dependence on the level of irradiance. Additionally, laser peening produced compressive residual stresses to a depth of 4.3 mm in the 33 mm thick weld at the center of the weld bead where high levels of tensile stress were initially present.
C1 Univ Calif Davis, Dept Mech & Aeronaut Engn, Davis, CA 95616 USA.
Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Hill, MR (reprint author), Univ Calif Davis, Dept Mech & Aeronaut Engn, 1 Shields Ave, Davis, CA 95616 USA.
EM mrhill@ucdavis.edu
RI Hill, Michael/A-2525-2016
OI Hill, Michael/0000-0002-9168-211X
NR 31
TC 49
Z9 50
U1 0
U2 16
PU ASME-AMER SOC MECHANICAL ENG
PI NEW YORK
PA THREE PARK AVE, NEW YORK, NY 10016-5990 USA
SN 0094-4289
J9 J ENG MATER-T ASME
JI J. Eng. Mater. Technol.-Trans. ASME
PD OCT
PY 2004
VL 126
IS 4
BP 465
EP 473
DI 10.1115/1.1789957
PG 9
WC Engineering, Mechanical; Materials Science, Multidisciplinary
SC Engineering; Materials Science
GA 872FX
UT WOS:000225194200018
ER
PT J
AU Basagaoglu, H
Ginn, TR
McCoy, BJ
AF Basagaoglu, H
Ginn, TR
McCoy, BJ
TI Radial pore diffusion with nonuniform intraparticle porosities
SO JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE
LA English
DT Article
DE porosity; numerical models; pore size distribution; porous media;
solutes
ID PARTICLE-SIZE DISTRIBUTION; ACTIVATED CARBON; MASS-TRANSFER; VAPOR
EXTRACTION; MODEL; SORPTION; ADSORPTION; TRANSPORT; SOIL; CHROMATOGRAPHY
AB Effects of radially dependent intraparticle pore sizes on solute fate and transport are examined for batch systems with spherical particles using a recently developed numerical model. The model can accommodate multiple particles distributed in size, mass transfer resistance at particle boundaries, intraparticle reversible sorption kinetics, and first-order decays. Two applications are examined. In the first application, random or deterministic intraparticle porosities across a spherical particle are considered. In the second application, multiple particles distributed in sizes with particle size-dependent intraparticle porosities are studied. Results from these applications indicate that concentration profiles are largely determined by interplays between B, eta, and epsilon that incorporate the effects of intraparticle pore structures. Steady-state concentration values in both applications are determined by the volume-averaged intraparticle porosities. These results could be useful for understanding solute tailing behavior in natural porous media and the design of synthetic sorbents for treatment of contaminated waters.
C1 Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA.
Univ Calif Davis, Dept Civil & Environm Engn, Davis, CA 95616 USA.
Louisiana State Univ, Dept Chem Engn, Baton Rouge, LA 70803 USA.
RP Basagaoglu, H (reprint author), Idaho Natl Engn & Environm Lab, POB 1625,MS 2025, Idaho Falls, ID 83415 USA.
EM basah@inel.gov; trginn@ucdavis.edu; bjmccoy@lsu.edu
NR 36
TC 4
Z9 4
U1 1
U2 11
PU ASCE-AMER SOC CIVIL ENGINEERS
PI RESTON
PA 1801 ALEXANDER BELL DR, RESTON, VA 20191-4400 USA
SN 0733-9372
J9 J ENVIRON ENG-ASCE
JI J. Environ. Eng.-ASCE
PD OCT
PY 2004
VL 130
IS 10
BP 1170
EP 1179
DI 10.1061/(ASCE)0733-9372(2004)130:10(1170)
PG 10
WC Engineering, Environmental; Engineering, Civil; Environmental Sciences
SC Engineering; Environmental Sciences & Ecology
GA 865BN
UT WOS:000224677600012
ER
PT J
AU Wei, ZY
Lee, KM
Tchikanda, SW
Zhou, Z
Hong, SP
AF Wei, ZY
Lee, KM
Tchikanda, SW
Zhou, Z
Hong, SP
TI Free surface flow in high speed fiber drawing with large-diameter glass
preforms
SO JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME
LA English
DT Article
ID NECK-DOWN REGION; OPTICAL-FIBER; FURNACE; TRANSPORT
AB This paper presents a complete two-dimensional (2D) thermofluid model for predicting the neck-down shape in the fiber drawing process. This model uses the controlled draw tension to calculate the Neumann boundary condition at the furnace exit; thus, it does not require specifying the speed (or diameter) of the fiber as most previous studies did. The model presented here can be applied to optimization of the high-speed draw process with large-diameter preforms. In this study, the radiative transfer equation is directly solved for the radiation fluxes using the discrete ordinate method coupled with the solution of the free surface flow, which does not assume that the glass is optically thick and does not neglect the glass absorption at the short-wavelength band. The artificial compressibility method is used to solve the Navier-Stokes equations. A staggered-grid computation scheme that is shown to be efficient and robust was used to reduce the computation load in solving the complete 2D model. The neck-down profile of a large preform (9 cm dia) drawn at a relatively high speed of 25 m/s was experimentally measured. The measured profile well matches that derived numerically. Results also show that the free surface calculated using the Dirichlet boundary condition deviates considerably from the measured profile, particularly near the furnace exit where the actual diameter (and, hence, the speed of the glass) is essentially unknown. Although the difference between the numerical results obtained from the full and semi-2D models was small, this difference could be significant if the location at which the glass converges to 125 mum dia is of interest, especially when the preform has a large diameter drawn at a high speed.
C1 Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA.
Sandia Natl Labs, Livermore, CA 94550 USA.
OFS, Norcross, GA 30071 USA.
RP Wei, ZY (reprint author), Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA.
EM gte384w@prism.gatech.edu; kokmeng.lee@me.gatech.edu;
zhizhou@ofsoptics.com; shong@ofsoptics.com
NR 17
TC 3
Z9 3
U1 0
U2 1
PU ASME-AMER SOC MECHANICAL ENG
PI NEW YORK
PA THREE PARK AVE, NEW YORK, NY 10016-5990 USA
SN 0022-1481
J9 J HEAT TRANS-T ASME
JI J. Heat Transf.-Trans. ASME
PD OCT
PY 2004
VL 126
IS 5
BP 713
EP 722
DI 10.1115/1.1795237
PG 10
WC Thermodynamics; Engineering, Mechanical
SC Thermodynamics; Engineering
GA 876BZ
UT WOS:000225472000006
ER
PT J
AU O'Brien, JE
Sohal, MS
Wallstedt, PC
AF O'Brien, JE
Sohal, MS
Wallstedt, PC
TI Local heat transfer and pressure drop for finned-tube heat exchangers
using oval tubes and vortex generators
SO JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME
LA English
DT Article
ID TRANSFER ENHANCEMENT; FLOW LOSSES
AB This paper presents the results of an experimental study of forced convection heat transfer in a narrow rectangular duct fitted with an elliptical tube and one or two delta-winglet pairs. The duct was designed to simulate a single passage in a fin-tube heat exchanger Heat transfer measurements were obtained using a transient technique in which a heated airflow is suddenly introduced to the test section. High-resolution local fin-surface temperature distributions were obtained at several times after initiation of the transient using an imaging infrared camera. Corresponding local fin-surface heat transfer coefficients were then calculated from a locally applied one-dimensional semi-infinite inverse heat conduction model. Heat transfer results were obtained over a Reynolds number range based on duct height of 670-6300. Pressure-drop measurements have also been obtained for similar elliptical-tube and winglet geometries, using a separate single-channel, multiple-tube-row pressure-drop apparatus. The pressure-drop apparatus includes four tube rows in a staggered array. Comparisons of heat transfer and pressure-drop results for the elliptical tube versus a circular tube with and without winglets are provided. Mean heat transfer results indicated that the addition of the single winglet pair to the oval-tube geometry yielded significant heat transfer enhancement, averaging 38% higher than the oval-tube, no-winglet case. The corresponding increase in friction factor associated with the addition of the single winglet pair to the oval-tube geometry was very modest, less than 10% at Re-Dh = 500 and less than 5% at Re-Dh = 5000.
C1 Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA.
RP O'Brien, JE (reprint author), Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA.
NR 17
TC 33
Z9 33
U1 0
U2 8
PU ASME-AMER SOC MECHANICAL ENG
PI NEW YORK
PA THREE PARK AVE, NEW YORK, NY 10016-5990 USA
SN 0022-1481
J9 J HEAT TRANS-T ASME
JI J. Heat Transf.-Trans. ASME
PD OCT
PY 2004
VL 126
IS 5
BP 826
EP 835
DI 10.1115/1.1795239
PG 10
WC Thermodynamics; Engineering, Mechanical
SC Thermodynamics; Engineering
GA 876BZ
UT WOS:000225472000019
ER
PT J
AU Becher, T
Hill, RJ
AF Becher, T
Hill, RJ
TI Loop corrections to heavy-to-light form factors and evanescent operators
in SCET
SO JOURNAL OF HIGH ENERGY PHYSICS
LA English
DT Article
DE weak decays; B-physics; QCD; NLO computations
ID COLLINEAR EFFECTIVE THEORY; DECAYS; FACTORIZATION; QUARK; SYMMETRY;
CURRENTS
AB One-loop matching corrections are calculated for Soft-Collinear Effective Theory (SCET) operators relevant to the analysis of heavy-to-light meson form factors at large recoil. The numerical impact of radiative corrections on form factor predictions is assessed. Evanescent operators in the effective theory are studied and it is shown that even in problems of the Sudakov type, these operators can be renormalized to have vanishing matrix elements.
C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA.
RP Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
EM becher@fnal.gov; rjh@slac.stanford.edu
NR 28
TC 29
Z9 29
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 OCT
PY 2004
IS 10
AR 055
PG 29
WC Physics, Particles & Fields
SC Physics
GA 878IU
UT WOS:000225641100023
ER
PT J
AU Birkedal, A
Chacko, Z
Gaillard, MK
AF Birkedal, A
Chacko, Z
Gaillard, MK
TI Little supersymmetry and the supersymmetric little hierarchy problem
SO JOURNAL OF HIGH ENERGY PHYSICS
LA English
DT Article
DE global symmetries; supersymmetric standard model; GUT; Higgs physics
ID HIGGS-BOSON MASS; COMPOSITE HIGGS; STANDARD MODELS; BREAKING;
NATURALNESS; SYMMETRY; SCALARS; SU(6); SU(2); U(1)
AB The current experimental lower bound on the Higgs mass significantly restricts the allowed parameter space in most realistic supersymmetric models, with the consequence that these models exhibit significant fine-tuning. We propose a solution to this 'supersymmetric little hierarchy problem'. We consider scenarios where the stop masses are relatively heavy - in the 500 GeV to a TeV range. Radiative stability of the Higgs soft mass against quantum corrections from the top quark Yukawa coupling is achieved by imposing a global SU(3) symmetry on this interaction. This global symmetry is only approximate - it is not respected by the gauge interactions. A subgroup of the global symmetry is gauged by the familiar SU(2) of the standard model. The physical Higgs is significantly lighter than the other scalars because it is the pseudo-Goldstone boson associated with the breaking of this symmetry. Radiative corrections to the Higgs potential naturally lead to the right pattern of gauge and global symmetry breaking. We show that both the gauge and global symmetries can be embedded into a single SU(6) grand unifying group, thereby maintaining the prediction of gauge coupling unification. Among the firm predictions of this class of models are new states with the quantum numbers of 10 and (10) over bar under SU(5) close to the TeV scale. The Higgs mass is expected to be below 130 GeV, just as in the MSSM.
C1 Univ Florida, Dept Phys, Gainesville, FL 32611 USA.
Cornell Univ, Inst High Energy Phenomenol, Ithaca, NY 14853 USA.
Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Theoret Phys Grp, Berkeley, CA 94720 USA.
RP Univ Florida, Dept Phys, Gainesville, FL 32611 USA.
EM andreasb@mail.lns.cornell.edu; zchacko@thsrv.lbl.gov; mkgaillard@lbl.gov
NR 50
TC 58
Z9 58
U1 0
U2 2
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 OCT
PY 2004
IS 10
AR 036
DI 10.1088/1126-6708/2004/10/036
PG 22
WC Physics, Particles & Fields
SC Physics
GA 878IU
UT WOS:000225641100042
ER
PT J
AU Hewett, JL
Lillie, B
Rizzo, TG
AF Hewett, JL
Lillie, B
Rizzo, TG
TI Monte Carlo exploration of warped higgsless models
SO JOURNAL OF HIGH ENERGY PHYSICS
LA English
DT Article
DE beyond standard model; compactification and string models
ID UNITARITY; PHYSICS
AB We have performed a detailed Monte Carlo exploration of the parameter space for a warped Higgsless model of electroweak symmetry breaking in 5 dimensions. This model is based on the SU(2)(L) x SU(2)(R) X U(1)(B-L) gauge group in an AdS(5) bulk with arbitrary gauge kinetic terms on both the Planck and TeV branes. Constraints arising from precision electroweak measurements and collider data are found to be relatively easy to satisfy. We show, however, that the additional requirement of perturbative unitarity up to the cut-off, similar or equal to10 TeV, in WL+WL- elastic scattering in the absence of dangerous tachyons eliminates all models. If successful models of this class exist, they must be highly fine-tuned.
C1 Stanford Linear Accelerator Ctr, Menlo Pk, CA 94025 USA.
RP Stanford Linear Accelerator Ctr, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA.
EM hewett@slac.stanford.edu; lillieb@slac.standrod.edu;
rizzo@slac.stanford.edu
NR 29
TC 23
Z9 23
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 OCT
PY 2004
IS 10
AR 014
PG 18
WC Physics, Particles & Fields
SC Physics
GA 878IU
UT WOS:000225641100064
ER
PT J
AU Liang, X
Guo, JZ
Leung, LR
AF Liang, X
Guo, JZ
Leung, LR
TI Assessment of the effects of spatial resolutions on daily water flux
simulations
SO JOURNAL OF HYDROLOGY
LA English
DT Article
DE spatial scales; land surface model; model calibration; runoff; soil
moisture; evapotranspiration
ID SURFACE PARAMETERIZATION SCHEMES; DISTRIBUTED HYDROLOGICAL MODELS;
RIVER-BASIN; MULTICRITERIA METHODS; GLOBAL OPTIMIZATION; RUNOFF MODELS;
SCALE; VARIABILITY; PRECIPITATION; SENSITIVITY
AB Impacts of spatially distributed precipitation and soil heterogeneity on modeling water fluxes at different spatial resolutions are investigated using the Three-layer Variable Infiltration Capacity (VIC-3L) land surface model at the Blue River watershed in Oklahoma. In this study, hourly grid-based NEXRAD (Next Generation Radar) Stage III radar precipitation data approximately at 4 x 4 km(2) resolution are used to compute daily precipitation at spatial resolutions of 1/32, 1/16, 1/8, 1/4, 1/2 and I degree based on an area weighted average method. Soil parameters at the corresponding six spatial resolutions are derived from the State Soil Geographic (STATSGO) soil data. The forcing data of daily maximum and minimum temperature, wind speed, and vegetation parameters are disaggregated/aggregated directly to finer/coarser spatial resolutions based on the University of Washington (UW) data, which are gridded at 1/8 degree spatial resolution. Our study suggests that a critical spatial resolution for the VIC-3L model may exist for the study watershed. For spatial resolutions finer than the critical resolution, one does not necessarily obtain better model performance in terms of runoff, evapotranspiration, and total zone soil moisture with increasing spatial resolution if the VIC-3L model parameters are calibrated at each spatial resolution. Also, model parameters calibrated at a coarse resolution can be applied to finer resolutions to obtain generally comparable results. However, model parameters calibrated at finer resolutions cannot result in comparable results when applied to resolutions coarser than the identified critical resolution. In addition, while soil moisture of the total zone is more sensitive to the spatial distributions of soil properties, runoff and evaporation are more sensitive to the spatial distribution of daily precipitation at the watershed being studied. (C) 2004 Elsevier B.V. All rights reserved.
C1 Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA.
Pacific NW Natl Lab, Richland, WA USA.
RP Liang, X (reprint author), Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA.
EM liang@ce.berkeley.edu
NR 45
TC 38
Z9 41
U1 0
U2 7
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-1694
J9 J HYDROL
JI J. Hydrol.
PD OCT 1
PY 2004
VL 298
IS 1-4
BP 287
EP 310
DI 10.1016/j.jhydrol.2003.07.007
PG 24
WC Engineering, Civil; Geosciences, Multidisciplinary; Water Resources
SC Engineering; Geology; Water Resources
GA 851GF
UT WOS:000223672900014
ER
PT J
AU Guo, JZ
Liang, X
Leung, LR
AF Guo, JZ
Liang, X
Leung, LR
TI Impacts of different precipitation data sources on water budgets
SO JOURNAL OF HYDROLOGY
LA English
DT Article
DE land surface model; radar precipitation; rain gauge precipitation;
runoff; evapotranspiration; soil moisture
ID RAIN-GAUGE DATA; REAL-TIME ESTIMATION; RADAR RAINFALL; FRACTIONAL
COVERAGE; GLOBAL OPTIMIZATION; BAYESIAN-APPROACH; UNITED-STATES; MODEL;
PARAMETERIZATION; VARIABILITY
AB Radar and rain-gauge precipitation datasets are used to explore the impacts of different precipitation data sources on water budgets simulated by the Three-Layer Variable Infiltration Capacity (VIC-3L) land surface model over the watershed of the Illinois River at Watts, Oklahoma. Hourly grid-based NEXRAD (Next Generation Radar) Stage III precipitation data (approximately 4 X 4 km(2)) were aggregated in time and space to daily precipitation at 1/8 degree and compared to the University of Washington (UW) daily precipitation data, which were gridded at 1/8 degree based on rain-gauge precipitation data. Comparisons of the temporal cumulative precipitation magnitudes indicate that the NEXRAD precipitation is smaller than the UW data and the rain gauge measurements. Hyetographs obtained from the NEXRAD data in general appear to be narrower with higher peaks. In addition, the NEXRAD data are better in capturing the precipitation spatial distributions than the UW data.
Investigations of water fluxes based on simulations forced by the two types of precipitation datasets suggest that realistic streamflow simulations, compared to the observed daily streamflow at the outlet of the Illinois River at Watts, can be obtained if model parameters are calibrated. Compared to soil moisture of the total zone, runoff and evapotranspiration are more sensitive to the temporal and spatial distributions of precipitation, with runoff being most sensitive. Also, runoff and evapotranspiration obtained based on the NEXRAD precipitation data show more spatial heterogeneities than those obtained by using the UW precipitation data. Moreover, the magnitudes of the components of the water budget can be strongly impacted by the VIC-3L calibrated parameters, but their spatial distribution patterns may not be significantly affected. (C) 2004 Elsevier B.V. All rights reserved.
C1 Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA.
Pacific NW Natl Lab, Richland, WA USA.
RP Liang, X (reprint author), Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA.
EM liang@ce.berkeley.edu
NR 50
TC 28
Z9 30
U1 0
U2 5
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-1694
J9 J HYDROL
JI J. Hydrol.
PD OCT 1
PY 2004
VL 298
IS 1-4
BP 311
EP 334
DI 10.1016/j.jhydrol.2003.08.020
PG 24
WC Engineering, Civil; Geosciences, Multidisciplinary; Water Resources
SC Engineering; Geology; Water Resources
GA 851GF
UT WOS:000223672900015
ER
PT J
AU Lin, HQ
Shik, HY
Wang, YQ
Batista, CD
Gubernatis, JE
AF Lin, HQ
Shik, HY
Wang, YQ
Batista, CD
Gubernatis, JE
TI Investigating. magnetic properties by quantum Monte Carlo simulations
SO JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
LA English
DT Article
DE itinerant ferromagnetism; strongly correlated electrons; quantum Monte
Carlo
ID FERMION GROUND-STATES; LATTICE
AB We briefly review the results of recent work establishing a new mechanism for itinerant ferromagnetism in the periodic Anderson model. The novel mechanism, called the segmented band mechanism, whose energy scale is up to two orders of magnitude larger than the RKKY mechanism, is determined by a competition between two energy scales set by certain band features. Here, we report preliminary simulation results studying the effects of band dispersion on these scales and hence on the stability of the ferromagnetic state. (C) 2004 Elsevier B.V. All rights reserved.
C1 Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China.
Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Lin, HQ (reprint author), Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China.
EM hqlin@phy.cuhk.edu.hk
NR 10
TC 4
Z9 4
U1 0
U2 1
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 OCT
PY 2004
VL 281
IS 2-3
BP 240
EP 246
DI 10.1016/j.jmmm.2004.04.128
PG 7
WC Materials Science, Multidisciplinary; Physics, Condensed Matter
SC Materials Science; Physics
GA 859BF
UT WOS:000224236200013
ER
PT J
AU Fernandez-Gonzalez, R
Barcellos-Hoff, MH
Ortiz-de-Solorzano, C
AF Fernandez-Gonzalez, R
Barcellos-Hoff, MH
Ortiz-de-Solorzano, C
TI Quantitative image analysis in mammary gland biology
SO JOURNAL OF MAMMARY GLAND BIOLOGY AND NEOPLASIA
LA English
DT Article
DE image analysis; whole mount; 3D reconstruction; segmentation;
quantification
ID IN-SITU HYBRIDIZATION; BREAST-CANCER PROGRESSION; THICK TISSUE-SECTIONS;
CELL-NUCLEI; 3-DIMENSIONAL RECONSTRUCTION; EPITHELIAL-CELLS; MICROSCOPIC
IMAGES; GENE AMPLIFICATION; SEGMENTATION; RAT
AB In this paper we present a summary of recent quantitative approaches used for the analysis of macro and microscopic images in mammary gland biology. The advantages and disadvantages of whole mount analysis, reconstruction of serial tissue sections and nucleus/cell segmentation of either conventional and confocal images are discussed, as are applications of quantitative image analysis, such as quantification of protein levels or vasculature measurements in normal tissue and cancer. Integration of quantitative imaging into the further study of the mammary gland holds the promise of better understanding its tissue complexity that evolves during development, differentiation and disease.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
UC Berkeley US San Francisco Joint Grad Program B, San Francisco, CA USA.
RP Ortiz-de-Solorzano, C (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM codesolorzano@lbl.gov
RI Ortiz de Solorzano, Carlos/G-3278-2010; Fernandez-Gonzalez,
Rodrigo/F-6145-2012
OI Ortiz de Solorzano, Carlos/0000-0001-8720-0205;
NR 69
TC 10
Z9 10
U1 0
U2 1
PU SPRINGER/PLENUM PUBLISHERS
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1083-3021
J9 J MAMMARY GLAND BIOL
JI J. Mammary Gland Biol. Neoplasia
PD OCT
PY 2004
VL 9
IS 4
BP 343
EP 359
DI 10.1007/s10911-004-1405-9
PG 17
WC Oncology; Endocrinology & Metabolism; Physiology
SC Oncology; Endocrinology & Metabolism; Physiology
GA 918ER
UT WOS:000228525600004
PM 15838604
ER
PT J
AU Alcaraz, J
Nelson, CM
Bissell, MJ
AF Alcaraz, J
Nelson, CM
Bissell, MJ
TI Biomechanical approaches for studying integration of tissue structure
and function in mammary epithelia
SO JOURNAL OF MAMMARY GLAND BIOLOGY AND NEOPLASIA
LA English
DT Article
DE microenvironment; mammary epithelial cells; structure-function; cell
shape; cell biomechanics; 3D cultures
ID ATOMIC-FORCE MICROSCOPY; GENE-EXPRESSION; TRACTION FORCES; LIVING CELLS;
ULTIMATE REGULATOR; MECHANICAL FORCE; SHEAR-STRESS; MATRIX; INTEGRIN;
MECHANOTRANSDUCTION
AB The structure and function of each individual mammary epithelial cell (MEC) is largely controlled by a bidirectional interchange of chemical and mechanical signals with the microenvironment. Most of these signals are tissue-specific, since they arise from the threedimensional (3D) tissue organization and are modulated during mammary gland development, maturation, pregnancy, lactation, and involution. Although the important role played by structural and mechanical signals in mammary cell and tissue function is being increasingly recognized, quantitative biomechanical approaches are still scarce. Here we review currently available biomechanical tools that allow quantitative examination of individual cells, groups of cells or full monolayers in two-dimensional cultures, and cells in 3D cultures. Current technological limitations and challenges are discussed, with special emphasis on their potential applications in MEC biology. We argue that the combination of biomechanical tools with current efforts in mathematical modeling and in cell and molecular biology applied to 3D cultures provides a powerful approach to unravel the complexity of tissue-specific structure-function relationships.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
RP Bissell, MJ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, 1 Cyclotron Rd,MS 83-101, Berkeley, CA 94720 USA.
EM mjbissell@lbl.gov
RI Alcaraz, Jordi/F-5513-2016
OI Alcaraz, Jordi/0000-0001-7898-1599
FU NCI NIH HHS [R37 CA064786, CA57621, CA64786-02, R01 CA057621, R01
CA057621-07, R01 CA064786, R01 CA064786-07]
NR 71
TC 15
Z9 15
U1 0
U2 1
PU SPRINGER/PLENUM PUBLISHERS
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1083-3021
J9 J MAMMARY GLAND BIOL
JI J. Mammary Gland Biol. Neoplasia
PD OCT
PY 2004
VL 9
IS 4
BP 361
EP 374
DI 10.1007/s10911-004-1406-8
PG 14
WC Oncology; Endocrinology & Metabolism; Physiology
SC Oncology; Endocrinology & Metabolism; Physiology
GA 918ER
UT WOS:000228525600005
PM 15838605
ER
PT J
AU Lockett, S
de Solorzano, CO
Baggett, D
Chin, K
AF Lockett, S
de Solorzano, CO
Baggett, D
Chin, K
TI Quantitative three-dimensional microscopy approaches with applications
in breast cancer biology including measurement of genomic instability
SO JOURNAL OF MAMMARY GLAND BIOLOGY AND NEOPLASIA
LA English
DT Article
DE fluorescence microscopy; quantitative 3D imaging; mammary gland; genomic
instability
ID CELLS; NUCLEI; SPECTROSCOPY; SEGMENTATION; MORPHOLOGY; IMAGES
AB Understanding tissue development, tissue homeostasis and what goes wrong in these processes during tumorigenesis, requires knowledge of the kinetics of multiple, molecular pathways in individual cells while cells are in their tissue context. This review outlines progress and future directions necessary in quantitative microscopy for gaining this knowledge, using the mammary gland as a model system.
C1 NCI, Frederick Sci Applicat Int Corp Frederick, Frederick, MD 21701 USA.
Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA USA.
Worcester Polytech Inst, Worcester, MA 01609 USA.
Univ Calif San Francisco, Dept Lab Med, San Francisco, CA 94143 USA.
Univ Calif San Francisco, Ctr Comprehens Canc, San Francisco, CA 94143 USA.
RP Lockett, S (reprint author), NCI, Frederick Sci Applicat Int Corp Frederick, Frederick, MD 21701 USA.
EM slockett@ncifcrf.gov
RI Ortiz de Solorzano, Carlos/G-3278-2010
OI Ortiz de Solorzano, Carlos/0000-0001-8720-0205
FU NCI NIH HHS [N01-CO56000]
NR 25
TC 0
Z9 0
U1 0
U2 0
PU SPRINGER/PLENUM PUBLISHERS
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1083-3021
J9 J MAMMARY GLAND BIOL
JI J. Mammary Gland Biol. Neoplasia
PD OCT
PY 2004
VL 9
IS 4
BP 383
EP 391
DI 10.1007/x10911-004-1408-6
PG 9
WC Oncology; Endocrinology & Metabolism; Physiology
SC Oncology; Endocrinology & Metabolism; Physiology
GA 918ER
UT WOS:000228525600007
PM 15838607
ER
PT J
AU Oyen, ML
Cook, RF
Emerson, JA
Moody, NR
AF Oyen, ML
Cook, RF
Emerson, JA
Moody, NR
TI Indentation responses of time-dependent films on stiff substrates (vol
19, pg 2487, 2004)
SO JOURNAL OF MATERIALS RESEARCH
LA English
DT Correction
C1 Univ Minnesota, Dept Biophys Sci & Med Phys, Minneapolis, MN 55455 USA.
Sandia Natl Labs, Albuquerque, NM 87185 USA.
Sandia Natl Labs, Livermore, CA 94551 USA.
RP Oyen, ML (reprint author), Univ Minnesota, Dept Biophys Sci & Med Phys, Minneapolis, MN 55455 USA.
RI Oyen, Michelle/B-1600-2008;
OI Oyen, Michelle/0000-0002-3428-748X
NR 1
TC 1
Z9 1
U1 0
U2 1
PU MATERIALS RESEARCH SOCIETY
PI WARRENDALE
PA 506 KEYSTONE DR, WARRENDALE, PA 15086 USA
SN 0884-2914
J9 J MATER RES
JI J. Mater. Res.
PD OCT
PY 2004
VL 19
IS 10
BP 3120
EP 3121
DI 10.1557/JMR.2004.0445
PG 2
WC Materials Science, Multidisciplinary
SC Materials Science
GA 858TE
UT WOS:000224213900043
ER
PT J
AU Wuchina, E
Opeka, M
Causey, S
Buesking, K
Spain, J
Cull, A
Routbort, J
Guitierrez-Mora, F
AF Wuchina, E
Opeka, M
Causey, S
Buesking, K
Spain, J
Cull, A
Routbort, J
Guitierrez-Mora, F
TI Designing for ultrahigh-temperature applications: The mechanical and
thermal properties of HfB2, HfCx, HfNx, and alpha Hf(N)
SO JOURNAL OF MATERIALS SCIENCE
LA English
DT Article; Proceedings Paper
CT Workshop on Ultra-High Temperature Ceramic Materials
CY NOV 05-07, 2003
CL Wintergreen, VA
SP AFOSR
ID OXIDATION; ZRB2
AB The thermal conductivity, thermal expansion, Young's Modulus, flexural strength, and brittle-plastic deformation transition temperature were determined for HfB2, HfC0.98, HfC0.67, and HfN0.92 ceramics. The mechanical behavior of alphaHf(N) solid solutions was also studied. The thermal conductivity of modified HfB2 exceeded that of the other materials by a factor of 5 at room temperature and by a factor of 2.5 at 820degreesC. The transition temperature of HfC exhibited a strong stoichiometry dependence, decreasing from 2200degreesC for HfC0.98 to 1100degreesC for HfC0.67 ceramics. The transition temperature of HfB2 was 1100degreesC. Pure HfB2 was found to have a strength of 340 MPa in 4 point bending, that was constant from room temperature to 1600degreesC, while a HfB2 + 10% HfCx had a higher room temperature bend strength of 440 MPa, but that dropped to 200 MPa at 1600degreesC. The data generated by this effort was inputted into finite element models to predict material response in internally heated nozzle tests. The theoretical model required accurate material properties, realistic thermal boundary conditions, transient heat transfer analysis, and a good understanding of the displacement constraints. The results of the modeling suggest that HfB2 should survive the high thermal stresses generated during the nozzle test primarily because of its superior thermal conductivity. The comparison the theoretical failure calculations to the observed response in actual test conditions show quite good agreement implying that the behavior of the design is well understood. (C) 2004 Kluwer Academic Publishers.
C1 USN, Ctr Surface Warfare, Bethesda, MD 20827 USA.
So Res Inst, Birmingham, AL 35255 USA.
Mat Res & Design, Philadelphia, PA USA.
Argonne Natl Lab, Argonne, IL 60439 USA.
Univ Seville, Seville, Spain.
RP Wuchina, E (reprint author), USN, Ctr Surface Warfare, Bethesda, MD 20827 USA.
EM wuchinaej@nswccd.navy.mil
NR 23
TC 140
Z9 148
U1 7
U2 68
PU KLUWER ACADEMIC PUBL
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0022-2461
J9 J MATER SCI
JI J. Mater. Sci.
PD OCT 1
PY 2004
VL 39
IS 19
BP 5939
EP 5949
DI 10.1023/B:JMSC.0000041690.06117.34
PG 11
WC Materials Science, Multidisciplinary
SC Materials Science
GA 868DW
UT WOS:000224895300006
ER
PT J
AU Schwab, ST
Stewart, CA
Dudeck, KW
Kozmina, SM
Katz, JD
Bartram, B
Wuchina, EJ
Kroenke, WJ
Courtin, G
AF Schwab, ST
Stewart, CA
Dudeck, KW
Kozmina, SM
Katz, JD
Bartram, B
Wuchina, EJ
Kroenke, WJ
Courtin, G
TI Polymeric precursors to refractory metal borides
SO JOURNAL OF MATERIALS SCIENCE
LA English
DT Article; Proceedings Paper
CT Workshop on Ultra-High Temperature Ceramic Materials
CY NOV 05-07, 2003
CL Wintergreen, VA
SP AFOSR
ID HAFNIUM CARBIDE; OXIDATION; ZIRCONIUM; DIBORIDE
AB Polymeric precursors to zirconium and hafnium diboride are described. Initial studies concentrated on carbothermal/borothermal reduction of metal alkoxides; however, improved results were obtained from oxide free-precursors prepared from the metal borohydride and borazine. The metal borides are obtained in good chemical and ceramic yield upon pyrolysis, and the polymeric precursors obtained through the reaction of borazine with the metal borohydride exhibit viscosities amenable to use as preceramic binders in powder processing. (C) 2004 Kluwer Academic Publishers.
C1 Thor Technol Inc, Albuquerque, NM 87107 USA.
Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
USN, Ctr Surface Warfare, Carderock Div, Bethesda, MD 20817 USA.
Univ New Mexico, Albuquerque, NM 87131 USA.
RP Schwab, ST (reprint author), Thor Technol Inc, Albuquerque, NM 87107 USA.
EM stschwab@twrol.com
NR 21
TC 15
Z9 17
U1 0
U2 7
PU KLUWER ACADEMIC PUBL
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0022-2461
J9 J MATER SCI
JI J. Mater. Sci.
PD OCT 1
PY 2004
VL 39
IS 19
BP 6051
EP 6055
DI 10.1023/B:JMSC.0000041701.01103.41
PG 5
WC Materials Science, Multidisciplinary
SC Materials Science
GA 868DW
UT WOS:000224895300017
ER
PT J
AU [Anonymous]
AF [Anonymous]
TI The SIV/HIV vaccine database for non-human primates: A tool to support
theHIV vaccine development effort
SO JOURNAL OF MEDICAL PRIMATOLOGY
LA English
DT Meeting Abstract
RP Los Alamos Natl Lab, POB 1663, Los Alamos, NM USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU BLACKWELL PUBLISHING
PI OXFORD
PA 9600 GARSINGTON RD, OXFORD OX4 2DG, OXON, ENGLAND
SN 0047-2565
J9 J MED PRIMATOL
JI J. Med. Primatol.
PD OCT
PY 2004
VL 33
IS 5-6
BP 306
EP 306
PG 1
WC Veterinary Sciences; Zoology
SC Veterinary Sciences; Zoology
GA 858GC
UT WOS:000224179300080
ER
PT J
AU Howard, BH
Killmeyer, RP
Rothenberger, KS
Cugini, AV
Morreale, BD
Enick, RM
Bustamante, F
AF Howard, BH
Killmeyer, RP
Rothenberger, KS
Cugini, AV
Morreale, BD
Enick, RM
Bustamante, F
TI Hydrogen permeance of palladium-copper alloy membranes over a wide range
of temperatures and pressures
SO JOURNAL OF MEMBRANE SCIENCE
LA English
DT Article
DE gas separations; inorganic membranes; metal membranes; hydrogen;
palladium-copper
ID ELEVATED-TEMPERATURES; COMPOSITE MEMBRANES; METAL MEMBRANES; SEPARATION;
DIFFUSION; SULFIDE
AB The permeance of Pd-Cu alloys containing 40, 53, 60, and 80 wt.% Pd has been determined over the 623-1173 K temperature range for H-2 partial pressure differences as great as 2.6 MPa. Pure palladium and copper membranes were also evaluated. The Pd-Cu alloys exhibited predictable permeances that reflected the crystalline phase structures as shown in the binary phase diagram. Under conditions of face-centered-cubic (fcc) stability, the permeance increased steadily with palladium content, approaching the permeance of pure palladium membranes. The 53 and 60 wt.% Pd alloys were evaluated at temperatures within the body-centered-cubic (bcc) stability region. For both alloys, the bcc permeance was several times greater than the fcc permeance with the 60 wt.% Pd bcc permeance at 623 K reaching about 70% of the permeance of palladium. These bcc alloys were subjected to temperature increases during testing that resulted in transition from bcc to fcc, followed by temperature decreases that should revert the alloys to bcc. The permeances dropped abruptly during the transition from bcc to fcc. However, on cooling back to the bcc stability region, neither the 60 nor 53 wt.% Pd alloy completely regained a bcc permeance during the test period. All of the Pd-Cu alloys subjected to testing at H 73 K showed some permeance decline that was attributed to intermetallic diffusion between the membrane and support. The application of a diffusion barrier between the support and membrane foil in a 53 wt.% Pd permeance test successfully blocked the intermetallic diffusion and prevented degredation of the membrane's performance. (C) 2004 Elsevier B.V. All rights reserved.
C1 US DOE, NETL, Pittsburgh, PA 15236 USA.
Parsons Project Serv Inc, South Pk, PA 15129 USA.
Univ Pittsburgh, Dept Chem & Petr Engn, Pittsburgh, PA 15261 USA.
RP Howard, BH (reprint author), US DOE, NETL, POB 10940, Pittsburgh, PA 15236 USA.
EM bret.howard@netl.doe.gov
NR 24
TC 127
Z9 132
U1 3
U2 21
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0376-7388
J9 J MEMBRANE SCI
JI J. Membr. Sci.
PD OCT 1
PY 2004
VL 241
IS 2
BP 207
EP 218
DI 10.1016/j.memsci.2004.04.031
PG 12
WC Engineering, Chemical; Polymer Science
SC Engineering; Polymer Science
GA 849YG
UT WOS:000223577000005
ER
PT J
AU Morreale, BD
Ciocco, MV
Howard, BH
Killmeyer, RP
Cugini, A
Enick, RM
AF Morreale, BD
Ciocco, MV
Howard, BH
Killmeyer, RP
Cugini, A
Enick, RM
TI Effect of hydrogen-sulfide on the hydrogen permeance of palladium-copper
alloys at elevated temperatures
SO JOURNAL OF MEMBRANE SCIENCE
LA English
DT Article
DE gas separations; hydrogen; hydrogen-sulfide; metal membranes;
palladium-copper
ID DENSITY-FUNCTIONAL THEORY; MEMBRANES; CATALYST; SULFUR; PD
AB The hydrogen permeance of several 0.1 mm thick Pd-Cu alloy foils (80 wt.% Pd-20 wt.% Cu, 60 wt.% Pd-40 wt.% Cu and 53 wt.% Pd-47 wt.% Cu) was evaluated using transient flux measurements at temperatures ranging from 603 to 1123 K and pressures up to 620 kPa both in the presence and absence of 1000 ppm H2S. Sulfur resistance, as evidenced by no significant change in permeance, was correlated with the temperatures associated with the face-centered-cubic crystalline structure for the alloys in this study. The permeance of the body-centered cubic phase, however, was up to two orders of magnitude lower when exposed to H2S. A smooth transition from sulfur poisoning to sulfur resistance with increasing temperature was correlated with the alloy transition from a body-centered-cubic structure to a face-centered-cubic structure. (C) 2004 Elsevier B.V. All rights reserved.
C1 Parsons Project Serv Inc, Pittsburgh, PA 15129 USA.
US DOE, NETL, Pittsburgh, PA 15236 USA.
Univ Pittsburgh, Dept Chem & Petr Engn, NETL, Pittsburgh, PA 15261 USA.
RP Morreale, BD (reprint author), Parsons Project Serv Inc, POB 618, Pittsburgh, PA 15129 USA.
EM bryan.morreale@pp.netl.doe.gov
NR 16
TC 111
Z9 114
U1 2
U2 14
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0376-7388
J9 J MEMBRANE SCI
JI J. Membr. Sci.
PD OCT 1
PY 2004
VL 241
IS 2
BP 219
EP 224
DI 10.1016/j.memsci.2004.04.033
PG 6
WC Engineering, Chemical; Polymer Science
SC Engineering; Polymer Science
GA 849YG
UT WOS:000223577000006
ER
PT J
AU Hassanein, A
Burtseva, T
Brooks, JN
Konkashbaev, I
Rice, B
AF Hassanein, A
Burtseva, T
Brooks, JN
Konkashbaev, I
Rice, B
TI Candidate plasma-facing materials for extreme ultraviolet lithography
source components
SO JOURNAL OF MICROLITHOGRAPHY MICROFABRICATION AND MICROSYSTEMS
LA English
DT Article
DE extreme ultraviolet source; plasma-facing components; thermal shock
resistance; debris reduction
ID MATERIAL EROSION; DISRUPTION; PERFORMANCE; PREDICTION; SIMULATION
AB Material selection and lifetime issues for extreme ultraviolet (EUV) lithography are of critical importance to the success of this technology for commercial applications. This work reviews current trends in production and use of plasma-facing electrodes, insulators, and wall materials for EUV-type sources. Ideal candidate materials should be able to: withstand high thermal shock from the short pulsed plasma; withstand high thermal loads without structural failure; reduce debris generation during discharge; and be machined accurately. We reviewed the literature on current and proposed fusion plasma-facing materials as well as current experience with plasma gun and other simulation devices. Both fusion and EUV source materials involve issues of surface erosion by particle sputtering and heat-induced evaporation/melting. These materials are either bare structural materials or surface coatings. EUV materials can be divided into four categories: wall, electrode, optical, and insulator materials. For electric discharge sources, all four types are required, whereas laser-produced plasma EUV sources do not require electrode and insulator materials. Several types of candidate alloy and other materials and methods of manufacture are recommended for each component of EUV lithography light sources. (C) 2004 Society of Photo-Optical Instrumentation Engineers.
C1 Argonne Natl Lab, Div Energy Technol, Argonne, IL 60439 USA.
Intel Corp, Component Res Div, Hillsboro, OR 97124 USA.
RP Hassanein, A (reprint author), Argonne Natl Lab, Div Energy Technol, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM hassanein@anl.gov
NR 16
TC 0
Z9 0
U1 0
U2 2
PU SPIE-INT SOCIETY OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98225 USA
SN 1537-1646
J9 J MICROLITH MICROFAB
JI J. Microlithogr. Microfabr. Microsyst.
PD OCT
PY 2004
VL 3
IS 4
BP 529
EP 536
DI 10.1117/1.1793153
PG 8
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Materials Science, Multidisciplinary; Optics
SC Engineering; Science & Technology - Other Topics; Materials Science;
Optics
GA 867WH
UT WOS:000224872900004
ER
PT J
AU Stipe, CB
Choi, JH
Lucas, D
Koshland, CP
Sawyer, RF
AF Stipe, CB
Choi, JH
Lucas, D
Koshland, CP
Sawyer, RF
TI Nanoparticle production by UV irradiation of combustion generated soot
particles
SO JOURNAL OF NANOPARTICLE RESEARCH
LA English
DT Article
DE ablation; aerosols; nanoparticles; particles; photofragmentation; soot
ID LASER-ABLATION; MICROPARTICLES; AEROSOL; GROWTH; NM
AB Laser ablation of surfaces normally produce high temperature plasmas that are difficult to control. By irradiating small particles in the gas phase, we can better control the size and concentration of the resulting particles when different materials are photofragmented. Here, we irradiate soot with 193 nm light from an ArF excimer laser. Irradiating the original agglomerated particles at fluences ranging from 0.07 to 0.26 J/cm(2) with repetition rates of 20 and 100 Hz produces a large number of small, unagglomerated particles, and a smaller number of spherical agglomerated particles. Mean particle diameters from 20 to 50 nm are produced from soot originally having a mean electric mobility diameter of 265 nm. We use a non-dimensional parameter, called the photon - atom ratio ( PAR), to aid in understanding the photofragmentation process. This parameter is the ratio of the number of photons striking the soot particles to the number of the carbon atoms contained in the soot particles, and is a better metric than the laser fluence for analyzing laser - particle interactions. These results suggest that UV photofragmentation can be effective in controlling particle size and morphology, and can be a useful diagnostic for studying elements of the laser ablation process.
C1 Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA USA.
Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Sch Publ Hlth, Berkeley, CA 94720 USA.
RP Lucas, D (reprint author), Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA USA.
EM d_lucas@lbl.gov
RI Sawyer, Robert/B-5013-2014
NR 27
TC 15
Z9 16
U1 0
U2 4
PU KLUWER ACADEMIC PUBL
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 1388-0764
J9 J NANOPART RES
JI J. Nanopart. Res.
PD OCT
PY 2004
VL 6
IS 5
BP 467
EP 477
DI 10.1007/s11051-004-2162-9
PG 11
WC Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials
Science, Multidisciplinary
SC Chemistry; Science & Technology - Other Topics; Materials Science
GA 881BQ
UT WOS:000225838800004
ER
PT J
AU Tapan, NA
Mustain, WE
Gurau, B
Sandi, G
Prakash, J
AF Tapan, NA
Mustain, WE
Gurau, B
Sandi, G
Prakash, J
TI Investigation of methanol oxidation electrokinetics on Pt using the
asymmetric electrode technique
SO JOURNAL OF NEW MATERIALS FOR ELECTROCHEMICAL SYSTEMS
LA English
DT Article
DE Direct Methanol Fuel Cell; asymmetric electrodeds; methanol oxidation
kinetics
AB The performance of a commercial Pt-black electrocatalyst was investigated in a Direct Methanol Fuel Cell (DMFC). A method for establishing the validity of anode polarization (without the use of a reference electrode) was shown by purging hydrogen and argon gas at the cathode under an asymmetric electrode configuration. It was found that hydrogen crossover to the cathode has a negligible effect on the polarization curve. In order to study methanol oxidation kinetics, the effects of mass transfer and ohmic resistances are eliminated and the correction techniques are discussed. At, approximate to 0.55 V, E-a changes from 60 kJ/mol to 40 kJ/mol (the removal of surface carbon monoxide) which points to the change in the rate determining step of the methanol oxidation reaction. Based on the value of the Tafel slope (138 mV/dec),the rate-determining step on the platinum surface can be the first electron transfer step (first C-H bond breakage of methanol or the activation of water) before 0.55 V.
C1 IIT, Ctr Electrochem Sci & Engn, Dept Environm Chem & Engn, Chicago, IL 60616 USA.
Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA.
RP Prakash, J (reprint author), IIT, Ctr Electrochem Sci & Engn, Dept Environm Chem & Engn, Chicago, IL 60616 USA.
EM prakash@iit.edu
NR 27
TC 12
Z9 13
U1 2
U2 3
PU ECOLE POLYTECHNIQUE MONTREAL
PI MONTREAL
PA C P 6079, SUCC CENTRE-VILLE, MONTREAL, PQ H3C 3A7, CANADA
SN 1480-2422
J9 J NEW MAT ELECTR SYS
JI J. New Mat.Electrochem. Syst.
PD OCT
PY 2004
VL 7
IS 4
BP 281
EP 286
PG 6
WC Electrochemistry; Materials Science, Multidisciplinary
SC Electrochemistry; Materials Science
GA 878FQ
UT WOS:000225632500005
ER
PT J
AU Farges, F
Lefrere, Y
Rossano, S
Berthereau, A
Calas, G
Brown, GE
AF Farges, F
Lefrere, Y
Rossano, S
Berthereau, A
Calas, G
Brown, GE
TI The effect of redox state on the local structural environment of iron in
silicate glasses: a molecular dynamics, combined XAFS spectroscopy, and
bond valence study
SO JOURNAL OF NON-CRYSTALLINE SOLIDS
LA English
DT Article
ID NEAR-EDGE STRUCTURE; FINE-STRUCTURE SPECTROSCOPY; FERRIC-FERROUS
EQUILIBRIA; RAY-ABSORPTION-SPECTRA; PRE-EDGE; NA2O-FEO-FE2O3-SIO2
SYSTEM; OXIDATION-STATES; OXYGEN FUGACITY; DISSOLVED WATER; OXIDE
GLASSES
AB A series of 27 silicate glasses of various compositions containing 0.2-2 at.% iron were synthesized at various oxygen fugacity values. The glasses were examined using X-ray absorption fine structure (XANES) spectroscopy at the Fe K-edge in order to determine iron oxidation state and first-neighbor coordination number. Spectral information extracted from the pre-edge region and principal component analysis (PCA) of the XANES region, together with a spectral inversion, were used to derive the end-member spectral components for Fe(II) and Fe(III). Linear trends in the pre-edge features were observed for most compositional series of the glasses examined as a function of Fe(II)/Fe(III) content. These linear trends are believed to be due to the similarity of average coordination numbers for both Fe(II) and Fe(III) end-members in each series. This result is consistent with model simulations of the XANES region and molecular dynamics (MD) simulations for the two end-member compositions which also show that Fe(II) and Fe(III) have similar average coordination numbers. These simulations also suggest the presence of five-coordinated Fe(III) in the melt phase. Based on a bond valence analysis of these MD simulations, a simple model is proposed to help predict the speciation of iron in oxide and silicate glasses and melts. (C) 2004 Elsevier B.V. All rights reserved.
C1 Univ Marne La Vallee, CNRS, Lab Geomat, FRE 2455, F-77454 Marne La Vallee 2, France.
Stanford Univ, Dept Geol & Environm Sci, Surface & Aqueous Geochem Grp, Stanford, CA 94305 USA.
Univ Paris 06, Lab Mineral Cristallog, F-75252 Paris 05, France.
Univ Paris 07, IPGP, F-75252 Paris 05, France.
CNRS, UMR 7590, F-75252 Paris 05, France.
St Gobain Res, F-93303 Aubervilliers, France.
St Gobain Vetrotex, F-73009 Chambery, France.
Stanford Synchrotron Radiat Lab, SLAC, Menlo Pk, CA 94025 USA.
RP Farges, F (reprint author), Univ Marne La Vallee, CNRS, Lab Geomat, FRE 2455, Cite Descartes,Champs S Marne, F-77454 Marne La Vallee 2, France.
EM farges@univ-mlv.fr
RI Calas, Georges/B-2445-2012
OI Calas, Georges/0000-0003-0525-5734
NR 56
TC 110
Z9 111
U1 3
U2 56
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0022-3093
J9 J NON-CRYST SOLIDS
JI J. Non-Cryst. Solids
PD OCT 1
PY 2004
VL 344
IS 3
BP 176
EP 188
DI 10.1016/j.jnoncrysol.2004.07.050
PG 13
WC Materials Science, Ceramics; Materials Science, Multidisciplinary
SC Materials Science
GA 864IV
UT WOS:000224628100010
ER
PT J
AU Ashok, B
Arleth, L
Hjelm, RP
Rubinstein, I
Onyuksel, H
AF Ashok, B
Arleth, L
Hjelm, RP
Rubinstein, I
Onyuksel, H
TI In vitro characterization of PEGylated phospholipid micelles for
improved drug solubilization: Effects of PEG chain length and PC
incorporation
SO JOURNAL OF PHARMACEUTICAL SCIENCES
LA English
DT Article
DE water-insoluble drug; PEGylated lipids; sterically stabilized mixed
micelles; sterically stabilized micelles; diazepam; SANS; QELS;
parenteral formulation; solubilization
ID ANGLE NEUTRON-SCATTERING; DIFFRACTOMETER; FORMULATION; SURFACTANT;
LIPOSOMES; BEHAVIOR
AB Sterically stabilized micelles (SSM) composed of poly(ethylene glycol-2000)-grafted distearoylphosphatidylethanolamine (DSPE-PEG) and sterically stabilized mixed micelles (SSMM) composed of DSPE-PEG and egg-phosphatidyl choline (PC) have recently been introduced as novel lipid based carriers for water-insoluble drugs. However, factors that affect the solubilization behavior of these phospholipid. micelles are not well understood. This study investigates the effect of PEG chain length and PC content on physical properties and solubilization potential of PEGylated phospholipid micelles. Critical micelle concentrations (CMC) determined for DSPE-PEG with different PEG chain lengths (2000, 3000, and 5000) using a fluorescent probe were in the micromolar range (0.5-1.5 muM) with higher CMC for longer PEG chain length. The size of micelles determined by quasi-elastic light scattering (QELS) showed that micellar systems became heterogeneous when PC was added at greater than or equal to25% for DSPE-PEG 2000 and greater than or equal to40% for DSPE-PEG 5000, respectively. Above these critical PC ratios a significant increase in aggregation number and formation of rodlike particles were observed by small angle neutron scattering (SANS). Solubilization of diazepam. was greater with DSPE-PEG 2000 than DSPE-PEG 5000 simple micelles as determined by RP-HPLC. However, DSPE-PEG 5000 micelles showed greater improvement in solubilization of the water-insoluble drug with an increase in PC content. In conclusion, phospholipid micelle size and solubilization potential varied with PEG chain length and PC content in the mixed micelle. Aggregation number and shape of the micelles did not significantly change until the critical PC concentrations. (C) 2004 Wiley-Liss, Inc.
C1 Univ Illinois, Dept Biopharmaceut Sci, Chicago, IL 60612 USA.
Los Alamos Natl Lab, Neutron Sci Ctr, Los Alamos, NM 87545 USA.
Univ Illinois, Dept Med, Chicago, IL 60612 USA.
Jesse Brown VA Med Ctr, Chicago, IL 60612 USA.
Univ Illinois, Dept Bioengn, Chicago, IL 60612 USA.
RP Onyuksel, H (reprint author), Univ Illinois, Dept Biopharmaceut Sci, Chicago, IL 60612 USA.
EM hayat@uic.edu
RI Lujan Center, LANL/G-4896-2012; Arleth, Lise/M-4705-2014
OI Arleth, Lise/0000-0002-4694-4299
NR 30
TC 133
Z9 133
U1 3
U2 55
PU JOHN WILEY & SONS INC
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN, NJ 07030 USA
SN 0022-3549
J9 J PHARM SCI-US
JI J. Pharm. Sci.
PD OCT
PY 2004
VL 93
IS 10
BP 2476
EP 2487
DI 10.1002/jps.20150
PG 12
WC Chemistry, Medicinal; Chemistry, Multidisciplinary; Pharmacology &
Pharmacy
SC Pharmacology & Pharmacy; Chemistry
GA 858YP
UT WOS:000224229100007
PM 15349957
ER
PT J
AU Sibirtsev, A
Krewald, S
Thomas, AW
AF Sibirtsev, A
Krewald, S
Thomas, AW
TI Systematic analysis of charmonium photoproduction
SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
LA English
DT Article
ID LARGE MOMENTUM-TRANSFER; DEEP-INELASTIC-SCATTERING; VECTOR-MESON
PRODUCTION; EXCLUSIVE PHOTOPRODUCTION; J/PSI PHOTOPRODUCTION; PHI-MESON;
HERA; QCD; ELECTROPRODUCTION; LEPTOPRODUCTION
AB The available data on J/Psi photoproduction are analysed in terms of pomeron exchange, two-gluon exchange and photon-gluon fusion models. Allowing the pomeron-quark interaction to be flavour-dependent and introducing both soft and hard pomerons it is possible to reproduce the data at roots > 10 GeV and small \t\. The two-gluon exchange calculations indicate strong sensitivity to the gluon distribution function. The results obtained with the most modem MRST2001 and DL PDF reproduce the forward J/Psi photoproduction cross section at roots > 10 GeV. The calculations with the photon-gluon fusion model and with MRST2001 and DL PDF are also in reasonable agreement with the data on the total J/Psi photoproduction cross section. However none of the models describe the data at roots < 10 GeV or \t\ greater than or equal to 1 GeV2. We attribute the J/Psi photoproduction at low energies and large \t\ to a mechanism different from pomeron or two-gluon exchange. We consider that this might be the exchange of an axial vector trajectory that couples with the axial form factor of the nucleon.
C1 Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany.
Univ Adelaide, Special Res Ctr Subatom Struct Matter, CSSM, Adelaide, SA 5005, Australia.
Univ Adelaide, Dept Phys & Math Phys, Adelaide, SA 5005, Australia.
Jefferson Lab, Newport News, VA 23606 USA.
RP Forschungszentrum Julich, Inst Kernphys, Postfach 1913, D-52425 Julich, Germany.
RI Thomas, Anthony/G-4194-2012;
OI Thomas, Anthony/0000-0003-0026-499X; Krewald,
Siegfried/0000-0002-8596-8429
NR 44
TC 8
Z9 8
U1 0
U2 0
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 OCT
PY 2004
VL 30
IS 10
BP 1427
EP 1444
AR PII S0954-3899(04)84700-5
DI 10.1088/0954-3899/30/10/009
PG 18
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 865BB
UT WOS:000224676400013
ER
PT J
AU Csorgo, T
Gyulassy, M
Kharzeev, D
AF Csorgo, T
Gyulassy, M
Kharzeev, D
TI Buckyballs and gluon junction networks on the femtometre scale
SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
LA English
DT Letter
ID BARYON NUMBER
AB We explore the possibility that novel geometrical structures analogous to carbon fullerenes may exist in Nature on the femtometre scale. The theory of strong interactions, quantum chromodynamics (QCD) predicts the existence of special topological gluon field configurations called baryon junctions and anti-junctions. Here we show that femto-scale structures, networks or closed (gluon field) cages, can be constructed in the theory of QCD as tiny cousins of familiar nano-scale structures such as carbonic fullerenes C-60, C-70. The most symmetric polyhedra of QCD junctions (J-balls) are characterized by the 'magic numbers' 8, 24, 48 and 120, and zero net baryon number. Tubes, prisms, tori and other topological structures can also be created. In addition, special configurations can be constructed that are odd under charge and parity conjugation (CP), although the QCD Lagrangian is CP even. We provide a semiclassical estimate for the expected mass range of QCD buckyballs and discuss the possible conditions under which such novel topological excitations of the QCD vacuum may be produced in experiments of high-energy physics.
C1 RMKI, KFKI, MTA, H-1525 Budapest 114, Hungary.
USP, Inst Fis, BR-05389970 Sao Paulo, Brazil.
Columbia Univ, Dept Phys, New York, NY 10027 USA.
Collegium Budapest, H-1014 Budapest, Hungary.
Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
RP Csorgo, T (reprint author), RMKI, KFKI, MTA, POB 49, H-1525 Budapest 114, Hungary.
EM csorgo@sunserv.kfki.hu; gyulassy@mail-cunuke.phys.columbia.edu;
kharzeev@bnl.gov
RI Csorgo, Tamas/I-4183-2012;
OI Csorgo, Tamas/0000-0002-9110-9663
NR 14
TC 3
Z9 3
U1 0
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0954-3899
J9 J PHYS G NUCL PARTIC
JI J. Phys. G-Nucl. Part. Phys.
PD OCT
PY 2004
VL 30
IS 10
BP L17
EP L25
AR PII S0954-3899(04)83604-1
DI 10.1088/0954-3899/30/10/L01
PG 9
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 865BB
UT WOS:000224676400001
ER
PT J
AU Battaglia, M
Hinchliffe, I
Tovey, D
AF Battaglia, M
Hinchliffe, I
Tovey, D
TI Cold dark matter and the LHC
SO JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
LA English
DT Review
ID DYNAMICAL SUPERSYMMETRY BREAKING; NEUTRALINO RELIC DENSITY; MINIMAL
SUPERGRAVITY; ELASTIC-SCATTERING; GRAND UNIFICATION; STANDARD MODEL;
HIGGS-BOSON; WIMP SEARCH; MODULATION; PARTICLES
AB The recent determination of the dark matter density in the universe by the WMAP satellite has brought new attention to the interplay of results from particle physics experiments at accelerators and from cosmology. In this paper we discuss the prospects for finding direct evidence for a candidate dark matter particle at the LHC and the measurements which would be crucial for testing its compatibility with the cosmology data.
C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
Lawrence Berkeley Natl Lab, Berkeley, CA USA.
Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England.
RP Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
NR 130
TC 15
Z9 15
U1 0
U2 0
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 OCT
PY 2004
VL 30
IS 10
BP R217
EP R244
AR PII S0954-3899(04)71429-2
DI 10.1088/0954-3899/30/10/R01
PG 28
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 865BB
UT WOS:000224676400003
ER
PT J
AU Butler, P
Wagner, C
Guidotti, R
Francis, I
AF Butler, P
Wagner, C
Guidotti, R
Francis, I
TI Long-life, multi-tap thermal battery development
SO JOURNAL OF POWER SOURCES
LA English
DT Article; Proceedings Paper
CT 23rd International Power Sources Symposium
CY SEP 22-24, 2003
CL Amsterdam, NETHERLANDS
DE thermal batteries; molten salt electrolytes; cobalt sulfide;
lithium-silicon
AB This paper describes an effort to develop long-life, multi-tap thermal battery technology with a minimal weight and volume. The effort has several challenging goals. Some of the development goals include an activated life of at least one hour, four voltage sections, and the ability to sustain significant pulse loads at the end of life. In order to meet these goals, advanced materials were chosen for development. The thermal battery chemistry developed consists of lithium-silicon anodes, low-melting eutectic electrolyte/separators, and cobalt disulfide cathodes. Besides evolving the electrochemistry for this battery, there are several other design challenges such as fine-tuning the heat balance so as to allow the battery to sustain the extended duration discharge. In addition, to minimize volume, the battery can is configured in a tapered shape and consequently requires a tapered Min-K(TM) sleeve for insulation. A new igniter design is also being used. Finally, extremely narrow voltage ranges for each of the four voltage taps have contributed to the challenges facing development engineers. This paper includes a summary of the battery design and presents test data from pre-prototype units. (C) 2004 Elsevier B.V. All rights reserved.
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Butler, P (reprint author), Sandia Natl Labs, POB 5800,MS0613, Albuquerque, NM 87185 USA.
EM pcbutlc@sandia.gov
NR 13
TC 16
Z9 20
U1 1
U2 16
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-7753
J9 J POWER SOURCES
JI J. Power Sources
PD OCT 1
PY 2004
VL 136
IS 2
SI SI
BP 240
EP 245
DI 10.1016/j.powsour.2004.03.034
PG 6
WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials
Science, Multidisciplinary
SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science
GA 860RR
UT WOS:000224361200008
ER
PT J
AU Guidotti, RA
Reinhardt, FW
Odinek, J
AF Guidotti, RA
Reinhardt, FW
Odinek, J
TI Overview of high-temperature batteries for geothermal and oil/gas
borehole power sources
SO JOURNAL OF POWER SOURCES
LA English
DT Article; Proceedings Paper
CT 23rd International Power Sources Symposium
CY SEP 22-24, 2003
CL Amsterdam, NETHERLANDS
DE applications/drilling/bore holes; thermal batteries; solid-state
batteries
ID GLASS
AB Batteries currently used as power supplies for measurement while drilling (MWD) equipment in boreholes for oil and gas exploration use a modified lithium/thionyl chloride technology. These batteries are limited to operating temperatures below 200degreesC. At higher temperatures, the batteries and the associated electronics must be protected by a dewar. Sandia National Laboratories has been actively engaged in developing suitable alternative technologies for geothermal and oil/gas borehole power sources that are based on both ionic liquid and solid-state electrolytes. In this paper, we present the results of our studies to date and the directions of future efforts. (C) 2004 Elsevier B.V. All rights reserved.
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Guidotti, RA (reprint author), Sierra Nevada Consulting, 1536 W High Pointe Ct, Minden, NV 89423 USA.
EM raguido@attglobal.net
NR 20
TC 27
Z9 35
U1 3
U2 21
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-7753
J9 J POWER SOURCES
JI J. Power Sources
PD OCT 1
PY 2004
VL 136
IS 2
SI SI
BP 257
EP 262
DI 10.1016/j.powsour.2004.03.007
PG 6
WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials
Science, Multidisciplinary
SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science
GA 860RR
UT WOS:000224361200011
ER
PT J
AU Nagasubramanian, G
Doughty, DH
AF Nagasubramanian, G
Doughty, DH
TI Electrical characterization of all-solid-state thin film batteries
SO JOURNAL OF POWER SOURCES
LA English
DT Article; Proceedings Paper
CT 23rd International Power Sources Symposium
CY SEP 22-24, 2003
CL Amsterdam, NETHERLANDS
DE solid-state batteries; impedance; coulombic efficiency; discharge
capacity
ID ELECTROLYTE
AB All-solid-state thin film micro-batteries comprised of a lithium anode, lithium phosphorus oxy-nitride (UPON) solid electrolyte and LixCoO2 cathode were evaluated at different temperatures from -50 to 80degreesC for electrical behavior and impedance raise. The cell dimensions were similar to2 cm long, similar to1.5 cm wide and similar to15 mum thick. The rated capacity of the cells was about 400 muAh. The cells were cycled (charge/discharge) at room temperature over 100 times at a 0.25C rate. The charge and discharge cut-off voltages were 4.2 and 3.0 V, respectively. The cells did not show any capacity decay over 100 cycles. The measured capacity was 400 muAh. The coulombic efficiency was 1, which suggests that the cell reaction is free from any parasitic side reactions and the lithium intercalation and de-intercalation reaction is completely and totally reversible. These cells also have good high-rate performance at room temperature. For example, these cells discharged at a 2.5C rate delivered similar to90% of the capacity at a 0.25C rate. However, the delivered capacities even at a 0.25C rate at 80 and -50degreesC were much lower than the room temperature capacity. Cells soaked at -50degreesC were not damaged permanently as seen by the near normal behavior when returned to room temperature. However, cells heated to 80degreesC were permanently damaged as seen by the lack of normal performance back at room temperature. Cell impedance was measured before and after cycling at different temperatures. The high-frequency resistance (generally ascribed to the electrolyte and other resistances in series with the electrolyte resistance) decreased with decreasing temperature. However, the interfacial resistance increased significantly with decreasing temperature. Further, the electrolyte resistance accounted for similar to2% of the total cell resistance. The cycled cells showed higher impedance than the uncycled cells. (C) 2004 Elsevier B.V. All rights reserved.
C1 Sandia Natl Labs, Albuquerque, NM USA.
RP Nagasubramanian, G (reprint author), Sandia Natl Labs, 2521 Lithium Battery R&D 1515, Albuquerque, NM USA.
EM gnagasu@sandia.gov
NR 5
TC 33
Z9 38
U1 1
U2 22
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-7753
J9 J POWER SOURCES
JI J. Power Sources
PD OCT 1
PY 2004
VL 136
IS 2
SI SI
BP 395
EP 400
DI 10.1016/j.jpowsour.2004.03.019
PG 6
WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials
Science, Multidisciplinary
SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science
GA 860RR
UT WOS:000224361200032
ER
PT J
AU Ortiz, F
Simpson, JR
Pignatiello, JJ
Heredia-Langner, A
AF Ortiz, F
Simpson, JR
Pignatiello, JJ
Heredia-Langner, A
TI A genetic algorithm approach to multiple-response optimization
SO JOURNAL OF QUALITY TECHNOLOGY
LA English
DT Article
DE heuristic methods; regression modeling; response surface desirability
functions
AB Many designed experiments require the simultaneous optimization of multiple responses. A common approach is to use a desirability function combined with an optimization algorithm to find the most desirable settings of the controllable factors. However, as the problem grows even moderately in either the number of factors or the number of responses, conventional optimization algorithms can fail to find the global optimum. An alternative approach is to use a heuristic search procedure such as a genetic algorithm (GA). This paper proposes and develops a multiple-response solution technique using a GA in conjunction with an unconstrained desirability function. The GA requires that several parameters be determined in order for the algorithm to operate effectively. We perform a robust designed experiment in order to tune the genetic algorithm to perform well regardless of the complexity of the multiple-response optimization problem. The performance of the proposed GA method is evaluated and compared with the performance of the method that combines the desirability with the generalized reduced gradient (GRG) optimization. The evaluation shows that only the proposed GA approach consistently and effectively solves multiple-response problems of varying complexity.
C1 Florida A&M Univ, Dept Ind Engn, Tallahassee, FL 32310 USA.
Florida State Univ, Dept Ind Engn, Tallahassee, FL 32310 USA.
Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Ortiz, F (reprint author), Florida A&M Univ, Dept Ind Engn, Tallahassee, FL 32310 USA.
EM fortiz@eng.fsu.edu; simpson@eng.fsu.edu; pigna@eng.fsu.edu
NR 24
TC 43
Z9 47
U1 0
U2 3
PU AMER SOC QUALITY CONTROL-ASQC
PI MILWAUKEE
PA 600 N PLANKINTON AVE, MILWAUKEE, WI 53203 USA
SN 0022-4065
J9 J QUAL TECHNOL
JI J. Qual. Technol.
PD OCT
PY 2004
VL 36
IS 4
BP 432
EP 450
PG 19
WC Engineering, Industrial; Operations Research & Management Science;
Statistics & Probability
SC Engineering; Operations Research & Management Science; Mathematics
GA 858YE
UT WOS:000224227900007
ER
PT J
AU Hodge, NE
Shi, LZX
Trabia, MB
AF Hodge, NE
Shi, LZX
Trabia, MB
TI A distributed fuzzy logic controller for an autonomous vehicle
SO JOURNAL OF ROBOTIC SYSTEMS
LA English
DT Article
ID MOBILE ROBOT; NAVIGATION; STRATEGIES; GUIDANCE
AB Autonomous vehicles can be used in a variety of applications such as hazardous environments or intelligent highway systems. Fuzzy logic is an appropriate choice for this application as it can describe human behavior well. This paper proposes two fuzzy logic controllers for the steering and the velocity control of an autonomous vehicle. The two controllers are divided into separate modules to mimic the way humans think while driving. The steering controller is divided into four modules; one module drives the vehicle toward the target while another module avoids collision with obstacles. A third module drives the vehicle through mazes. The fourth module adjusts the final orientation of the target. The velocity controller is divided into three modules; the first module speeds up the vehicle to reach the target and slows it down as it moves toward the target. The second module controls the velocity in the neighborhood of obstacles. A third module controls the velocity of the vehicle as it turns sharp corners. A method for automatic tuning of the first module of the velocity controller is proposed to stabilize the velocity of the vehicle as it approaches the target. Two examples to demonstrate the interaction among the seven control modules are included. Results of the simulation are compared with those in the literature. (C) 2004 Wiley Periodicals, Inc.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
Univ Nevada, Dept Mech Engn, Las Vegas, NV 89154 USA.
RP Lawrence Livermore Natl Lab, POB 808,L-125, Livermore, CA 94551 USA.
EM mbt@me.unlv.edu
OI Trabia, Mohamed/0000-0003-3090-9672
NR 18
TC 4
Z9 4
U1 0
U2 4
PU JOHN WILEY & SONS INC
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN, NJ 07030 USA
SN 0741-2223
J9 J ROBOTIC SYST
JI J. Robot. Syst.
PD OCT
PY 2004
VL 21
IS 10
BP 499
EP 516
DI 10.1002/rob.20032
PG 18
WC Robotics
SC Robotics
GA 853OS
UT WOS:000223837500001
ER
PT J
AU Lewandowski, JLV
AF Lewandowski, JLV
TI Particle-in-cell simulations with kinetic electrons
SO JOURNAL OF SCIENTIFIC COMPUTING
LA English
DT Article
DE turbulence; particle-in-cell; multigrid; drift-waves
ID ITERATIVE SOLUTION; TRANSPORT; EQUATIONS; ALGORITHM
AB A new scheme, based on an exact separation between adiabatic and nonadiabatic electron responses, for particle-in-cell (PIC) simulations of drift-type modes is presented. The ( linear and nonlinear) elliptic equations for the scalar fields are solved using a multigrid solver. The new scheme yields linear growth rates in excellent agreement with theory and it is shown to conserve energy well into the nonlinear regime. It is also demonstrated that simulations with few electrons are reliable and accurate, suggesting that large-scale, PIC simulations with electron dynamics in toroidal geometry (e.g., tokamaks and stellarators plasmas) are within reach of present-day massively-parallel supercomputers.
C1 Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Lewandowski, JLV (reprint author), Princeton Univ, Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
EM jlewando@pppl.gov
NR 12
TC 1
Z9 1
U1 0
U2 1
PU KLUWER ACADEMIC/PLENUM PUBL
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0885-7474
J9 J SCI COMPUT
JI J. Sci. Comput.
PD OCT
PY 2004
VL 21
IS 2
BP 173
EP 192
DI 10.1023/B:JOMP.0000030074.13977.45
PG 20
WC Mathematics, Applied
SC Mathematics
GA 826RF
UT WOS:000221845500003
ER
PT J
AU Im, HJ
Willis, C
Saengkerdsub, S
Makote, R
Pawel, MD
Dai, S
AF Im, HJ
Willis, C
Saengkerdsub, S
Makote, R
Pawel, MD
Dai, S
TI Scintillators for alpha and neutron radiations synthesized by room
temperature sol-gel processing
SO JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 12th International Workshop on Sol-Gel-Science and Technology (Sol-Gel
2003)
CY AUG 24-29, 2003
CL Sydney, AUSTRALIA
DE sol-gel; scintillator; neutron detector; alpha detection
ID ORGANIC-INORGANIC MATERIALS; POLYMER HYBRIDS; DESIGN
AB Solid-state scintillating materials were synthesized by the co-doping of sol-gel components with neutron absorbers [Li-6 and B-10], organic fluorescence sensitizers such as salicylic acid and 2,5-diphenyloxazole (PPO) and activator 1,4-bis-2-(5-phenyloxazolyl)-benzene (POPOP). The room-temperature sol-gel process through the addition of organic polymers is the key to the successful entrapment of the organic sensitizers and activator in inorganic matrixes. These transparent or translucent sol-gel scintillators were evaluated for alpha radiation and neutron detections.
C1 Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
RP Dai, S (reprint author), Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
EM dais@ornl.gov
RI Pawel, Michelle/Q-2729-2015; Dai, Sheng/K-8411-2015
OI Pawel, Michelle/0000-0003-0244-6703; Dai, Sheng/0000-0002-8046-3931
NR 18
TC 10
Z9 10
U1 1
U2 5
PU SPRINGER
PI DORDRECHT
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
SN 0928-0707
J9 J SOL-GEL SCI TECHN
JI J. Sol-Gel Sci. Technol.
PD OCT-DEC
PY 2004
VL 32
IS 1-3
BP 117
EP 123
DI 10.1007/s10971-004-5775-7
PG 7
WC Materials Science, Ceramics
SC Materials Science
GA 912TR
UT WOS:000228103300020
ER
PT J
AU Withers, RL
Hoche, T
Liu, Y
Esmaeilzadeh, S
Keding, R
Sales, B
AF Withers, RL
Hoche, T
Liu, Y
Esmaeilzadeh, S
Keding, R
Sales, B
TI A combined temperature-dependent electron and single-crystal X-ray
diffraction study of the fresnoite compound Rb2V4+V25+O8
SO JOURNAL OF SOLID STATE CHEMISTRY
LA English
DT Article
DE Rb2V3O8 fresnoite; low-temperature incommensurate phase transition;
frozen RUM mode; temperature-dependent electron diffraction study;
low-temperature average structure refinement
ID FRAMEWORK-STRUCTURE TYPE; STRUCTURE REFINEMENT; MAGNETIC-PROPERTIES;
BA2TISI2O8; BA2TIGE2O8; PHASE; SR2TISI2O8; BA2VSI2O8; BAVSI2O7
AB High-purity Rb2V3O8 has been grown and temperature-dependent electron and single-crystal X-ray diffraction used to carefully investigate its fresnoite-type reciprocal lattice. In contrast to other recently investigated representatives of the fresnoite family of compounds, Rb2V3O8 is not incommensurately modulated with an incommensurate basal plane primary modulation wave vector given by q similar to 0.3 <110>*. A careful low-temperature electron diffraction study has, however, revealed the existence of weak incommensurate satellite reflections characterized by the primitive primary modulation wave vector q(1) similar to 0.16c*. The reciprocal space positioning of these incommensurate satellite reflections, the overall (3 + 1)-d superspace group symmetry, as well as the shapes of the refined displacement ellipsoids determined from single-crystal XRD refinement, are all consistent with their arising from a distinct type of condensed rigid unit modes (RUMs) of distortion of the Rb2V3O8 parent structure. (C) 2004 Elsevier Inc. All rights reserved.
C1 Australian Natl Univ, Res Sch Chem, Canberra, ACT 0200, Australia.
Leibniz Inst Oberflachenmodifizierung eV, D-04318 Leipzig, Germany.
Univ Stockholm, Arrhenius Lab, Dept Inorgan Chem, S-10691 Stockholm, Sweden.
Univ Jena, Otto Schott Inst Glaschem, D-07743 Jena, Germany.
Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Australian Natl Univ, Res Sch Chem, Bldg 35,Sci Rd, Canberra, ACT 0200, Australia.
EM withers@rsc.anu.edu.au
RI Hoche, Thomas/J-7850-2012; Withers, Ray/H-8309-2014; Liu,
Yun/O-6153-2015
OI Withers, Ray/0000-0001-9017-2233; Liu, Yun/0000-0002-5404-3909
NR 30
TC 9
Z9 9
U1 1
U2 7
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0022-4596
EI 1095-726X
J9 J SOLID STATE CHEM
JI J. Solid State Chem.
PD OCT
PY 2004
VL 177
IS 10
BP 3316
EP 3323
DI 10.1016/j.jssc.2004.05.056
PG 8
WC Chemistry, Inorganic & Nuclear; Chemistry, Physical
SC Chemistry
GA 862BV
UT WOS:000224465500011
ER
PT J
AU Bobev, S
Bauer, ED
Thompson, JD
Sarrao, JL
Miller, GJ
Eck, B
Dronskowski, R
AF Bobev, S
Bauer, ED
Thompson, JD
Sarrao, JL
Miller, GJ
Eck, B
Dronskowski, R
TI Metallic behavior of the Zintl phase EuGe2: combined structural studies,
property measurements, and electronic structure calculations
SO JOURNAL OF SOLID STATE CHEMISTRY
LA English
DT Article
DE rare-earth intermetallics; crystal structure; magnetic measurements;
EuGe2; Eu-magnet; zintl phases; DFT-calculations
ID INTERMETALLIC COMPOUNDS; EXCHANGE; OXIDES; EU; SN; YB; TT; GE; SI
AB The Zintl compound EuGe2 crystallizes in the trigonal space group P (3) over bar ml (No. 164) with the CeCd2-structure type. Its structure can be formally derived from the hexagonal AIB(2)-structure type by a strong puckering of the hexagonal layers. The chemical bonding in EuGe2 can be rationalized according to the Zintl concept as (Eu2+)(Ge1-)(2), since the europium atoms are divalent and each germanium atom receives one additional valence electron. In that sense, EuGe2 is expected to be a closed-shell compound with semiconducting behavior. However, temperature dependent resistivity measurements show EuGe2 to be metallic. Subsequently, detailed crystallographic studies revealed the structure and the composition of EuGe2 to be free of defects and impurities, which, along with the confirmed divalent oxidation state of the europium atoms by means of magnetic measurements, make EuGe2 another example of a metallic Zintl phase. These results are in good agreement with the results of electronic structure calculations such as TB-LMTO-ASA (LDA) and FLAPW (GGA), which reveal non-zero DOS at the Fermi level. (C) 2004 Elsevier Inc. All rights reserved.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Iowa State Univ Sci & Technol, Dept Chem, Ames, IA 50011 USA.
Rhein Westfal TH Aachen, Inst Anorgan Chem, D-52056 Aachen, Germany.
RP Univ Delaware, Dept Chem & Biochem, 304A Drake Hall, Newark, DE 19716 USA.
EM sbobev@chem.udel.edu
RI Bauer, Eric/D-7212-2011
NR 45
TC 60
Z9 60
U1 4
U2 30
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0022-4596
EI 1095-726X
J9 J SOLID STATE CHEM
JI J. Solid State Chem.
PD OCT
PY 2004
VL 177
IS 10
BP 3545
EP 3552
DI 10.1016/j.jssc.2004.06.018
PG 8
WC Chemistry, Inorganic & Nuclear; Chemistry, Physical
SC Chemistry
GA 862BV
UT WOS:000224465500041
ER
PT J
AU Sykora, RE
Albrecht-Schmitt, TE
AF Sykora, RE
Albrecht-Schmitt, TE
TI Hydrothermal synthesis and crystal structure of
Cs-6[(UO2)(4)(W5O21)(OH)(2)(H2O)(2)]: a new polar uranyl tungstate
SO JOURNAL OF SOLID STATE CHEMISTRY
LA English
DT Article
DE hydrothermal synthesis; single-crystal X-ray diffraction; uranyl
tungstate; layered compound
ID BOND-VALENCE PARAMETERS; OPTICAL-PROPERTIES; CHEMISTRY; MOLYBDATES;
SHEET; SELENITES; CATIONS; URANIUM; IODATES; UNITS
AB The hydrothermal reaction of UO3, WO3, and CsIO4 leads to the formation of CS6[(UO2)(4)(W5O21)(OH)(2)(H2O)(2)] and UO2(IO3)(2)(H2O). Cs-6[(UO2)(4)(W5O21)(OH)(2)(H2O)(2)] is the first example of a hydrothermally synthesized uranyl tungstate. It's structure has been determined by single-crystal X-ray diffraction. Crystallographic data: tetragonal, space group 14 cm, a = 15.959(2)Angstrom, c = 14.215(l)Angstrom, Z = 4, MoKalpha, lambda = 0.71073 Angstrom, R(F) = 2.84% for 135 parameters with 2300 reflections with 1>2sigma(I). The structure is comprised of twodimensional (2)(infinity)(UO2)(4)(W5O21)(OH)(2)(H2O)(2)]6(-) anionic layers that are separated by Cs+ cations. The coordination polyhedra found in the novel layers consist of UO7 pentagonal bipyramids, WO6 distorted octahedra, and WO5 UO22+, square pyramids. The UO7 polyhedra are formed from the binding of five equatorial oxygen atoms around a central uranyl, 2 unit. Both bridging and terminal oxo ligands are employed in forming the WO5 square pyramidal units, while oxo, hydroxo, and aqua ligands are found in the WO6 distorted octahedra. In the layers, four (UO2)O-5 polyhedra corner share with equatorial oxygen atoms to form a U4O24 tetramer entity with a square site in the center; a tungsten atom populates the center of each of these sites to form a U4WO25 pentamer unit. The pentamer units that result are connected in two dimensions by edge-shared dimers of WO6 octahedra to form the two-dimensional (2)(infinity)[(UO2)(4)(W5O21)(OH)(2)(H2O)2](6-) layers. The lack of inversion symmetry in C-S6[(UO2)(4)(W5O21)OH)(2) (H2O)(2)] can be directly contributed to the WO5 square pyramids found in the pentamer units. In the structure, all of these polar polyhedra align their terminal oxygens in the same orientation, along the c axis, thus resulting in a polar compound. (C) 2004 Elsevier Inc. All rights reserved.
C1 Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
Auburn Univ, Dept Chem, Auburn, AL 36849 USA.
RP Sykora, RE (reprint author), Oak Ridge Natl Lab, Div Chem Sci, POB 2008,Mail Stop,MS 6375, Oak Ridge, TN 37831 USA.
EM sykorare@ornl.gov
NR 42
TC 15
Z9 15
U1 1
U2 9
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 OCT
PY 2004
VL 177
IS 10
BP 3729
EP 3734
DI 10.1016/j.jssc.2004.07.028
PG 6
WC Chemistry, Inorganic & Nuclear; Chemistry, Physical
SC Chemistry
GA 862BV
UT WOS:000224465500065
ER
PT J
AU Rai, D
Moore, DA
Hess, NJ
Rao, L
Clark, SB
AF Rai, D
Moore, DA
Hess, NJ
Rao, L
Clark, SB
TI Chromium(III) hydroxide solubility in the aqueous
Na+-OH--H2PO4--HPO42--PO43--H2O system: A thermodynamic model
SO JOURNAL OF SOLUTION CHEMISTRY
LA English
DT Article
DE thermodynamics, Cr(OH)(3)(am); solubility; hydrolysis constants;
ion-interaction parameters; Cr(Ill)-phosphate complexes;
Cr(OH)(3)H2PO4-, Cr(OH)(3)(H2PO4)(2-)(2), Cr(OH)(3)HPO42-
ID HYDROLYSIS CONSTANTS; PRODUCT; OXIDES; NAOH
AB Chromium(III)-phosphate reactions are expected to be important in managing high-level radioactive wastes stored in tanks at many DOE sites. Extensive studies on the solubility of amorphous Cr(III) solids in a wide range of pH (2.8-14) and phosphate concentrations (10(-4) to 1.0 m) at room temperature (22 +/- 2)degreesC were carried out to obtain reliable thermodynamic data for important Cr(III)-phosphate reactions. A combination of techniques (XRD, XANES, EXAFS, Raman spectroscopy, total chemical composition, and thermodynamic analyses of solubility data) was used to characterize solid and aqueous species. Contrary to the data recently reported in the literature,((1)) only a limited number of aqueous species [Cr(OH)(3)H2PO4-, Cr(OH)(3)(H2PO4)(2)(2-)), and Cr(OH)(3) HpO(4)(2-)] with up to about four orders of magnitude lower values for the formation constants of these species are required to explain Cr(III)-phosphate reactions in a wide range of pH and phosphate concentrations. The log Kdegrees values of reactions involving these species [Cr(OH)(3)(aq) + H2PO4- double left right arrow Cr(OH)(3)H2PO4-; Cr(OH)(3)(aq) + 2H(2)PO(4)(-) double left right arrow Cr(OH)(3)(H2PO4)(2)(2-); Cr(OH)(3)(aq) + HpO(4)(2-) double left right arrow Cr(OH)(3)HpO(4)(2-)] were found to be 2.78 +/- 0.3, 3.48 +/- 0.3, and 1.97 +/- 0.3, respectively.
C1 Pacific NW Natl Lab, Richland, WA 99352 USA.
Lawrence Berkeley Lab, Berkeley, CA USA.
Washington State Univ, Pullman, WA 99164 USA.
RP Rai, D (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
EM dhan.rai@pnl.gov
NR 22
TC 23
Z9 24
U1 5
U2 15
PU KLUWER ACADEMIC/PLENUM PUBL
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0095-9782
J9 J SOLUTION CHEM
JI J. Solut. Chem.
PD OCT
PY 2004
VL 33
IS 10
BP 1213
EP 1242
DI 10.1007/s10953-004-7137-z
PG 30
WC Chemistry, Physical
SC Chemistry
GA 885DK
UT WOS:000226137100003
ER
PT J
AU Sanishvili, R
Wu, R
Kim, DE
Watson, JD
Collart, F
Joachimiak, A
AF Sanishvili, R
Wu, R
Kim, DE
Watson, JD
Collart, F
Joachimiak, A
TI Crystal structure of Bacillus subtilis YckF: structural and functional
evolution
SO JOURNAL OF STRUCTURAL BIOLOGY
LA English
DT Article
DE protein structure initiative; crystal structure; MAD phasing;
oligomerization; tetramer; putative active site; catalytic Glu-152;
evolutionary pathway; gene hybridization; diminished physiological role
ID GROWN PSEUDOMONAS METHANICA; GLUCOSAMINE-6-PHOSPHATE SYNTHASE; X-RAY;
MICROBIAL GROWTH; HIGH-THROUGHPUT; C1 COMPOUNDS; ISOMERASE; PROTEIN;
6-PHOSPHATE; REFINEMENT
AB The crystal structure of the YckF protein from Bacillus subtilis was determined with MAD phasing and refined at 1.95 Angstrom resolution. YckF forms a tight tetramer both in crystals and in solution. Conservation of such oligomerization in other phosphate sugar isomerases indicates that the crystallographically observed tetramer is physiologically relevant. The structure of YckF was compared to with its ortholog from Methanococcus jannaschii, MJ1247. Both of these proteins have phosphate hexulose isomerase activity, although neither of the organisms can utilize methane or methanol as source of energy and/or carbon. Extensive sequence and structural similarities with MJ1247 and with the isomerase domain of glucosamine-6-phosphate synthase from Escherichia coli allowed us to group residues contributing to substrate binding or catalysis. Few notable differences among these structures suggest possible cooperativity of the four active sites of the tetramer. Phylogenetic relationships between obligatory and facultative methylotrophs along with B. subtilis and E. coli provide clues about the possible evolution of genes as they loose their physiological importance. (C) 2004 Elsevier Inc. All rights reserved.
C1 Argonne Natl Lab, Struct Biol Ctr, Argonne, IL 60439 USA.
Argonne Natl Lab, Midwest Ctr Struct Genom, Biosci Div, Argonne, IL 60439 USA.
EMBL, European Bioinformat Inst, Cambridge CB10 1SD, England.
RP Joachimiak, A (reprint author), Argonne Natl Lab, Struct Biol Ctr, 9700 S Cass Ave,Bldg 202, Argonne, IL 60439 USA.
EM andrzejj@anl.gov
OI Collart, Frank/0000-0001-6942-4483
FU NIGMS NIH HHS [P50 GM062414-02, GM 62414, P50 GM062414]
NR 38
TC 7
Z9 9
U1 0
U2 5
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 1047-8477
J9 J STRUCT BIOL
JI J. Struct. Biol.
PD OCT
PY 2004
VL 148
IS 1
BP 98
EP 109
DI 10.1016/j.jsb.2004.04.006
PG 12
WC Biochemistry & Molecular Biology; Biophysics; Cell Biology
SC Biochemistry & Molecular Biology; Biophysics; Cell Biology
GA 856SM
UT WOS:000224065100008
PM 15363790
ER
PT J
AU Clem, JR
AF Clem, JR
TI Pancake vortices
SO JOURNAL OF SUPERCONDUCTIVITY
LA English
DT Review
DE pancake vortices; layered superconductors; high-temperature
superconductors; films; forces; Josephson coupling
ID HIGH-TEMPERATURE SUPERCONDUCTORS; COUPLED LAYERED SUPERCONDUCTORS;
HIGH-TC SUPERCONDUCTORS; BI2SR2CACU2O8+DELTA SINGLE-CRYSTALS;
LATTICE-MELTING TRANSITION; LOWER CRITICAL-FIELD; LOCK-IN TRANSITION;
VORTEX-LATTICE; II SUPERCONDUCTORS; MAGNETIC-PROPERTIES
AB I describe the magnetic-field and current-density distributions generated by two-dimensional (2D) pancake vortices in infinite, semi-infinite, and finite-thickness stacks of Josephson-decoupled superconducting layers. Arrays of such vortices have been used to model the magnetic structure in highly anisotropic layered cuprate high-temperature superconductors. I show how the electromagnetic forces between pancake vortices can be calculatated, and I briefly discuss the effects of interlayer Josephson coupling.
C1 Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
RP Clem, JR (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
NR 102
TC 20
Z9 20
U1 0
U2 7
PU KLUWER ACADEMIC/PLENUM PUBL
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0896-1107
J9 J SUPERCOND
JI J. Supercond.
PD OCT
PY 2004
VL 17
IS 5
BP 613
EP 629
DI 10.1007/s10948-004-0774-z
PG 17
WC Physics, Applied; Physics, Condensed Matter
SC Physics
GA 883TM
UT WOS:000226038600009
ER
PT J
AU Kresin, VZ
Wolf, SA
Ovchinnikov, YN
AF Kresin, VZ
Wolf, SA
Ovchinnikov, YN
TI "Pseudogap" state of novel superconductors: Energy scales and structural
and diamagnetic transitions
SO JOURNAL OF SUPERCONDUCTIVITY
LA English
DT Article
DE inhomogeneity; diamagnetism; characteristic temperatures
ID ELECTRONIC SPECIFIC-HEAT; T-C SUPERCONDUCTORS; UNDERDOPED
BI2SR2CACU2O8+DELTA; YBA2CU3O6+X; RESONANCE; BEHAVIOR
AB High T-c cuprates are characterized by three characteristic energy scales: T-c, T-c*, and T*. The lowest scale, T-c, corresponds to the usual transition to the dissipationless state (R = 0) with a macroscopic phase coherence. The higher energy scale, T-c*, describes the diamagnetic transition. The region T-c* > T> T-c is characterized by the presence of superconducting regions embedded in a normal metallic matrix. The highest energy scale (T*) corresponds to the formation of the structure, phase separation, and to the opening of the CDW gap.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Univ Virginia, Dept Mat Sci, Charlottesville, VA 22903 USA.
LD Landau Theoret Phys Inst, Moscow 117332, Russia.
RP Kresin, VZ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RI Wolf, Stuart/A-7513-2009
NR 33
TC 1
Z9 1
U1 1
U2 1
PU KLUWER ACADEMIC/PLENUM PUBL
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 0896-1107
J9 J SUPERCOND
JI J. Supercond.
PD OCT
PY 2004
VL 17
IS 5
BP 669
EP 672
DI 10.1007/s10948-004-0779-7
PG 4
WC Physics, Applied; Physics, Condensed Matter
SC Physics
GA 883TM
UT WOS:000226038600014
ER
PT J
AU Kogan, S
Kaduchak, G
Sinha, DN
AF Kogan, S
Kaduchak, G
Sinha, DN
TI Acoustic concentration of particles in piezoelectric tubes: Theoretical
modeling of the effect of cavity shape and symmetry breaking
SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
LA English
DT Article
ID HEAT-CONDUCTING FLUID; SPHERICAL-PARTICLE; RADIATION FORCE; RIGID SPHERE
AB A new class of simple, highly efficient, cylindrical acoustic concentration devices has been developed based upon cylindrical (or near cylindrical) geometries [Kaduchak et al., Rev. Sci. Instrum. 73, 1332-1336 (2002)] for aerosol concentration applications. The concentrators are constructed from single PZT tubes driven at or near the breathing mode resonance. Acoustic concentration of aerosols is performed within the tube cavity. It has been found that slight modifications to the cylindrical cavity geometry can significantly increase the collection efficiency and assist in precise particle positioning. This paper analyzes the theoretical framework for the acoustic concentration of particles in these devices for various geometrical perturbations. The cavity geometries studied are (1) hollow cylindrical piezoelectric tube, (2) hollow piezoelectric tube with an inner concentric solid cylinder insert, (3) a hollow piezoelectric tube with a concentric elliptic insert which breaks the circular-cylindrical symmetry, and (4) a hollow elliptic cylindrical piezoelectric tube. It is shown that breaking the circular symmetry within the cavity localizes the particles in small spatial regions within the cavity. This localization of particles may be very useful in applications requiring aerosol collection or particle stream positioning. (C) 2004 Acoustical Society of America.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Kogan, S (reprint author), Los Alamos Natl Lab, MS D429, Los Alamos, NM 87545 USA.
EM kaduchak@lanl.gov
OI Sinha, Dipen/0000-0002-3606-7907
NR 15
TC 5
Z9 5
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 OCT
PY 2004
VL 116
IS 4
BP 1967
EP 1974
DI 10.1121/1.1785613
PN 1
PG 8
WC Acoustics; Audiology & Speech-Language Pathology
SC Acoustics; Audiology & Speech-Language Pathology
GA 864TK
UT WOS:000224655600013
ER
PT J
AU Blackman, DK
Groot-Hedlin, CC
Harben, P
Sauter, A
Orcutt, JA
AF Blackman, DK
Groot-Hedlin, CC
Harben, P
Sauter, A
Orcutt, JA
TI Testing low/very low frequency acoustic sources for basin-wide
propagation in the Indian Ocean
SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
LA English
DT Article
ID SEA-FLOOR; SCATTERING
AB Low/very low frequency acoustic signals were transmitted to distant receivers in the Indian Ocean. The aim was to test methods for characterizing the hydroacoustic capability of the International Monitoring System (IMS) that discriminates for nuclear tests in the region. Several acoustic sources were deployed between Seychelles and Fremantle, Australia, and the IMS receivers comprised a network of hydrophones off Diego Garcia and Australia. Two of the three acoustic sources tested produced basin-scale propagation of impulsive signals. Single glass spheres imploded within the sound channel produced a clear signal at frequencies above similar to40 Hz, at ranges of hundreds to a thousand kilometers. Five-sphere glass implosions were recorded at ranges up to 4400 km. Near-sea surface shots from a large airgun array were recorded in several cases at ranges of hundreds to thousands of kilometers, the frequency of the highest signal-to-noise ratio arrivals varied within the 5-100 Hz band. High background noise level was a key factor at IMS stations that did not detect the airgun signals in the 5-15 Hz band. In a few cases, details of bathymetric features that are not well represented in the digital elevation model contributed to unexpected variation in relative signal levels between IMS stations. (C) 2004 Acoustical Society of America.
C1 Scripps Inst Oceanog, La Jolla, CA 92093 USA.
Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Blackman, DK (reprint author), Scripps Inst Oceanog, La Jolla, CA 92093 USA.
EM dblackman@ucsd.edu
NR 19
TC 10
Z9 10
U1 0
U2 4
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 OCT
PY 2004
VL 116
IS 4
BP 2057
EP 2066
DI 10.1121/1.1786711
PN 1
PG 10
WC Acoustics; Audiology & Speech-Language Pathology
SC Acoustics; Audiology & Speech-Language Pathology
GA 864TK
UT WOS:000224655600022
ER
PT J
AU Lehman, SK
Norton, SJ
AF Lehman, SK
Norton, SJ
TI Radial reflection diffraction tomography
SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
LA English
DT Article
ID INVERSE SCATTERING; PROPAGATION; MEDIA
AB A wave-based tomographic imaging algorithm based upon a single rotating radially outward oriented transducer is developed. At successive angular locations at a fixed radius, the transducer launches a primary field and collects the backscattered field in a "pitch/catch" operation. The hardware configuration, operating mode, and data collection method are identical to that of most medical intravascular ultrasound (IVUS) systems. IVUS systems form images of the medium surrounding the probe based upon ultrasonic B scans, using a straight-ray model of sound propagation. The goal of this research is to develop a wave-based imaging algorithm using diffraction tomography techniques. Given the hardware configuration and the imaging method, this system is referred to as "radial reflection diffraction tomography." Two hardware configurations are considered: a multimonostatic mode using a single transducer as described above, and a multistatic mode consisting of a single transmitter and an aperture formed by multiple receivers. In this latter case, the entire source/receiver aperture rotates about the fixed radius. Practically, such a probe is mounted at the end of a catheter or snaking tube that can be inserted into a part or medium with the goal of forming images of the plane perpendicular to the axis of rotation. An analytic expression for the multimonostatic inverse is derived, but ultimately the new Hilbert space inverse wave (HSIW) algorithm is used to construct images using both operating modes. Applications include improved IVUS imaging, bore hole tomography, and nondestructive evaluation (NDE) of parts with existing access holes. (C) 2004 Acoustical Society of America.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94566 USA.
Geophex Ltd, Raleigh, NC 27603 USA.
RP Lehman, SK (reprint author), Lawrence Livermore Natl Lab, L-154,7000 E Ave, Livermore, CA 94566 USA.
EM lehman2@llnl.gov
NR 15
TC 2
Z9 2
U1 1
U2 2
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 OCT
PY 2004
VL 116
IS 4
BP 2158
EP 2172
DI 10.1121/1.1785651
PN 1
PG 15
WC Acoustics; Audiology & Speech-Language Pathology
SC Acoustics; Audiology & Speech-Language Pathology
GA 864TK
UT WOS:000224655600032
ER
PT J
AU Salto, HH
Calloway, TB
Ferrara, DM
Choi, AS
White, TL
AF Salto, HH
Calloway, TB
Ferrara, DM
Choi, AS
White, TL
TI Regulatory off-gas analysis from the evaporation of hanford simulated
waste spiked with organic compounds
SO JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION
LA English
DT Article
ID WATER
AB After strontium/transuranics removal by precipitation followed by cesium/technetium removal by ion exchange, the remaining low-activity waste in the Hanford River Protection Project Waste Treatment Plant is to be concentrated by evaporation before being mixed with glass formers and vitrified. To provide a technical basis to permit the waste treatment facility, a relatively organic-rich Hanford Tank 241-AN-107 waste simulant was spiked with 14 target volatile, semi-volatile, and pesticide compounds and evaporated under vacuum in a bench-scale natural circulation evaporator fitted with an industrial stack off-gas sampler at the Savannah River National Laboratory. An evaporator material balance for the target organics was calculated by combining liquid stream mass and analytical data with off-gas emissions estimates obtained using U.S. Environmental Protection Agency (EPA) SW-846 Methods. Volatile and light semi-volatile organic compounds <220 degreesC BP, >1 min Hg vapor pressure) in the waste simulant were found to largely exit through the condenser vent, while heavier semi-volatiles and pesticides generally remain in the evaporator concentrate. An OLI Environmental Simulation Program (licensed by OLI Systems, Inc.) evaporator model successfully predicted operating conditions and the experimental distribution of the fed target organics exiting in the concentrate, condensate, and off-gas streams, with the exception of a few semi-volatile and pesticide compounds. Comparison with Henry's Law predictions suggests the OLI Environmental Simulation Program model is constrained by available literature data.
C1 Westinghouse Savannah River Co, Savannah River Natl Lab, Aiken, SC USA.
BWX Technol Inc, Oak Ridge, TN USA.
RP Salto, HH (reprint author), Westinghouse Savannah River Co, Savannah River Natl Lab, Aiken, SC USA.
NR 26
TC 0
Z9 0
U1 2
U2 5
PU AIR & WASTE MANAGEMENT ASSOC
PI PITTSBURGH
PA ONE GATEWAY CENTER, THIRD FL, PITTSBURGH, PA 15222 USA
SN 1047-3289
J9 J AIR WASTE MANAGE
JI J. Air Waste Manage. Assoc.
PD OCT
PY 2004
VL 54
IS 10
BP 1242
EP 1253
PG 12
WC Engineering, Environmental; Environmental Sciences; Meteorology &
Atmospheric Sciences
SC Engineering; Environmental Sciences & Ecology; Meteorology & Atmospheric
Sciences
GA 859SP
UT WOS:000224288500003
ER
PT J
AU Tang, KQ
Page, JS
Smith, RD
AF Tang, KQ
Page, JS
Smith, RD
TI Charge competition and the linear dynamic range of detection in
electrospray ionization mass spectrometry
SO JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
LA English
DT Article
ID ELECTRODYNAMIC ION FUNNEL; CONE-JET MODE; SENSITIVITY; MS;
NANOELECTROSPRAY; TRANSMISSION; SEPARATIONS; GENERATION; PRINCIPLES;
INTERFACE
AB An experimental investigation and theoretical analysis are reported on charge competition in electrospray ionization (ESI) and its effects on the linear dynamic range of ESI mass spectrometric (MS) measurements. The experiments confirmed the expected increase of MS sensitivities as the ESI flow rate decreases. However, different compounds show somewhat different mass spectral peak intensities even at the lowest flow rates, at the same concentration and electrospray operating conditions. MS response for each compound solution shows good linearity at lower concentrations and levels off at high concentration, consistent with analyte "saturation" in the ESI process. The extent of charge competition leading to saturation in the ESI process is consistent with the relative magnitude of excess charge in the electrospray compared to the total number of analyte molecules in the solution. This ESI capacity model allows one to predict the sample concentration limits for charge competition and the on-set of ionization suppression effects, as well as the linear dynamic range for ESI-MS. The implications for quantitative MS analysis and possibilities for effectively extending the dynamic range of ESI measurements are discussed. (C) 2004 American Society for Mass Spectrometry.
C1 Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA.
Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA USA.
RP Smith, RD (reprint author), Pacific NW Natl Lab, Div Biol Sci, MSIN K8-98,POB 999, Richland, WA 99352 USA.
EM rds@pnl.gov
RI Smith, Richard/J-3664-2012
OI Smith, Richard/0000-0002-2381-2349
FU NCRR NIH HHS [P41 RR018522, RR18522]
NR 29
TC 137
Z9 138
U1 3
U2 31
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 OCT
PY 2004
VL 15
IS 10
BP 1416
EP 1423
DI 10.1016/j.jasms.2004.04.034
PG 8
WC Chemistry, Analytical; Chemistry, Physical; Spectroscopy
SC Chemistry; Spectroscopy
GA 860QP
UT WOS:000224358400006
PM 15465354
ER
PT J
AU Shvartsburg, AA
Tang, KQ
Smith, RD
AF Shvartsburg, AA
Tang, KQ
Smith, RD
TI Modeling the resolution and sensitivity of FAIMS analyses
SO JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
LA English
DT Article
ID ION MOBILITY SPECTROMETRY; PROTEIN IDENTIFICATION TECHNOLOGY;
PER-TRILLION LEVELS; MASS-SPECTROMETRY; ELECTROSPRAY-IONIZATION;
ATMOSPHERIC-PRESSURE; GAS-MIXTURES; DIFFUSION-COEFFICIENTS; COMPOSITION
DEPENDENCE; UBIQUITIN CONFORMERS
AB Field asymmetric waveform ion mobility spectrometry (FAIMS) is rapidly gaining acceptance as a robust, versatile tool for post-ionization separations prior to mass-spectrometric analyses. The separation is based on differences between ion mobilities at high and low electric fields, and proceeds at atmospheric pressure. Two major advantages of FAIMS over condensed-phase separations are its high speed and an ion focusing effect that often improves sensitivity. While selected aspects of FAIMS performance are understood empirically, no physical model rationalizing the resolving power and sensitivity of the method and revealing their dependence on instrumental variables has existed. Here we present a first-principles computational treatment capable of simulating the FAIMS analyzer for virtually any geometry (including the known cylindrical and planar designs) and arbitrary operational parameters. The approach involves propagating an ensemble of ion trajectories through the device in real time under the influence of applied asymmetric potential, diffusional motion incorporating the high-field and anisotropic phenomena, and mutual Coulomb repulsion of ionic charges. Calculations for both resolution and sensitivity are validated by excellent agreement with measurements in different FAIMS modes for ions representing diverse types and analyte classes. (C) 2004 American Society for Mass Spectrometry.
C1 Pacific NW Natl Lab, Biol Syst Anal & Mass Spect, Environm Mol Sci Lab, Richland, WA 99352 USA.
RP Smith, RD (reprint author), Pacific NW Natl Lab, Biol Syst Anal & Mass Spect, Environm Mol Sci Lab, 3335 Q Ave K8-98,POB 999, Richland, WA 99352 USA.
RI Smith, Richard/J-3664-2012
OI Smith, Richard/0000-0002-2381-2349
FU NCRR NIH HHS [RR18522]
NR 63
TC 58
Z9 62
U1 1
U2 17
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 OCT
PY 2004
VL 15
IS 10
BP 1487
EP 1498
DI 10.1016/j.jasms.2004.06.018
PG 12
WC Biochemical Research Methods; Chemistry, Analytical; Chemistry,
Physical; Spectroscopy
SC Biochemistry & Molecular Biology; Chemistry; Spectroscopy
GA 860QP
UT WOS:000224358400014
PM 15465362
ER
PT J
AU Hetrick, DM
Sjoreen, AL
AF Hetrick, DM
Sjoreen, AL
TI Validation of a hydrologic model for transport of chemicals in rivers
SO JOURNAL OF THE AMERICAN WATER RESOURCES ASSOCIATION
LA English
DT Article
DE modeling; hydraulics; software; surface water hydrology; chemical
transport; sedimentation; water quality
ID RHINE RIVER
AB Hydrologic Transport Assessment System (HYTRAS) is a software package that models contaminant transport in rivers and streams, including volatilization, adsorption/desorption, sedimentation, settling, and resuspension. Biodegradation, photolysis, and any other process that can be modeled using a first-order decay constant can be included as well. HYTRAS originally modeled the transport of radionuclides and has recently been expanded to include transport of chemicals. The transport of chemicals has been validated using data from an accidental release of the chemicals disulfoton and thiometon into the Rhine River in 1986. For these chemicals, sorption is not an important process. For the range of measured flow velocities, HYTRAS was found to bound the peak arrival times. For the range of measured degradation rates, HYTRAS was found to bound the peak concentrations within 400 km of the source and bound the peak concentrations within a factor of two out to 700 km.
C1 Oak Ridge Natl Lab, Computat Sci & Engn Dept, Oak Ridge, TN 37831 USA.
RP Hetrick, DM (reprint author), Oak Ridge Natl Lab, Computat Sci & Engn Dept, Bldg 6011,MS-6418, Oak Ridge, TN 37831 USA.
EM sjoreenal@ornl.gov
NR 12
TC 0
Z9 0
U1 1
U2 1
PU AMER WATER RESOURCES ASSOC
PI MIDDLEBURG
PA 4 WEST FEDERAL ST, PO BOX 1626, MIDDLEBURG, VA 20118-1626 USA
SN 1093-474X
J9 J AM WATER RESOUR AS
JI J. Am. Water Resour. Assoc.
PD OCT
PY 2004
VL 40
IS 5
BP 1129
EP 1140
DI 10.1111/j.1752-1688.2004.tb01574.x
PG 12
WC Engineering, Environmental; Geosciences, Multidisciplinary; Water
Resources
SC Engineering; Geology; Water Resources
GA 865SA
UT WOS:000224721900001
ER
PT J
AU Gates, WL
AF Gates, WL
TI Derivation of the equations of atmospheric motion in oblate spheroidal
coordinates
SO JOURNAL OF THE ATMOSPHERIC SCIENCES
LA English
DT Article
AB Since Earth is more nearly an oblate spheroid than a sphere, it is of at least theoretical interest to develop the atmospheric equations of motion in spheroidal coordinates. In this system the horizontal unit vectors are oriented eastward and northward along the surfaces of ellipsoids, while the orthogonal unit vector is oriented vertically along the surfaces of intersecting confocal hyperboloids. Using the theory of orthogonal curvilinear coordinates, the spheroidal equations of relative atmospheric motion are derived from the vector equation of absolute motion. With the exception of two terms in the meridional and vertical equations of motion that are unique to the spheroidal system, all of the metric and rotational terms in the spheroidal system correspond to those found in the familiar spherical formulation, but now have coefficients that are functions of both the spheroidal latitude and elevation. The unique spheroidal terms arise from the resolution of the difference between the directions of apparent gravity and Newtonian gravitation, which is neglected in the spherical formulation.
The complete spheroidal equations conserve both absolute angular momentum and total kinetic energy, and in the limit as Earth's focal distance or eccentricity approaches zero, reduce to the familiar spherical equations in both the general and hydrostatic cases. The differences between solutions of the spheroidal and spherical equations are not expected to be significant in most applications, although there is the possibility of the accumulation of systematic differences in long-term integrations.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Gates, WL (reprint author), Lawrence Livermore Natl Lab, Mail Stop L-103,POB 808, Livermore, CA 94550 USA.
EM gates5@llnl.gov
NR 5
TC 25
Z9 25
U1 1
U2 3
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 OCT
PY 2004
VL 61
IS 20
BP 2478
EP 2487
DI 10.1175/1520-0469(2004)061<2478:DOTEOA>2.0.CO;2
PG 10
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 863UF
UT WOS:000224588100006
ER
PT J
AU Chen, ST
Chen, EP
Chao, CK
AF Chen, ST
Chen, EP
Chao, CK
TI Preface
SO JOURNAL OF THE CHINESE INSTITUTE OF ENGINEERS
LA English
DT Editorial Material
C1 Natl Taiwan Univ Sci & Technol, Dept Mech Engn, Taipei 106, Taiwan.
Sandia Natl Labs, Sci Based Mat Modeling Dept, Livermore, CA 94550 USA.
RP Chen, ST (reprint author), Natl Taiwan Univ Sci & Technol, Dept Mech Engn, Taipei 106, Taiwan.
NR 0
TC 2
Z9 2
U1 0
U2 2
PU CHINESE INST ENGINEERS
PI TAIPEI
PA #1, 4TH FL, SEC 2, JEN-AI RD, TAIPEI 10019, TAIWAN
SN 0253-3839
J9 J CHIN INST ENG
JI J. Chin. Inst. Eng.
PD OCT
PY 2004
VL 27
IS 6
BP I
EP I
PG 1
WC Engineering, Multidisciplinary
SC Engineering
GA 865NB
UT WOS:000224708700001
ER
PT J
AU Kimmer, CJ
Zimmerman, JA
Klein, PA
Chen, EP
AF Kimmer, CJ
Zimmerman, JA
Klein, PA
Chen, EP
TI Molecular dynamics investigation of the effect of the interatomic
potential on steady-state crack propagation
SO JOURNAL OF THE CHINESE INSTITUTE OF ENGINEERS
LA English
DT Article
DE molecular dynamics; crack propagation; dynamic fracture
ID BRITTLE-FRACTURE; SCALE
AB We present molecular dynamics simulations examining the effect of the interatomic potential on steady-state mode I crack propagation in a two-dimensional triangular lattice as a function of applied strain. The interatomic potential is the Morse potential whose failure strain exhibits linear variation with its exponential parameter. The limiting crack speed is defined to be the steady-state crack velocity observed at the onset of instability in steady-state crack propagation leading to dislocation nucleation or crack branching. For all systems studied, the limiting crack speed is observed to be less than one third the Rayleigh wave speed. The fastest crack propagation in these ideal systems is associated with a material's long-wavelength elastic properties being dominated by the strength of the nearest-neighbor bond.
C1 Sandia Natl Labs, Livermore, CA 94551 USA.
RP Chen, EP (reprint author), Sandia Natl Labs, Livermore, CA 94551 USA.
EM epchen@sandia.gov
RI Zimmerman, Jonathan/A-8019-2012
NR 12
TC 0
Z9 0
U1 1
U2 4
PU CHINESE INST ENGINEERS
PI TAIPEI
PA #1, 4TH FL, SEC 2, JEN-AI RD, TAIPEI 10019, TAIWAN
SN 0253-3839
J9 J CHIN INST ENG
JI J. Chin. Inst. Eng.
PD OCT
PY 2004
VL 27
IS 6
BP 883
EP 887
PG 5
WC Engineering, Multidisciplinary
SC Engineering
GA 865NB
UT WOS:000224708700017
ER
PT J
AU Heebner, JE
Chak, P
Pereira, S
Sipe, JE
Boyd, RW
AF Heebner, JE
Chak, P
Pereira, S
Sipe, JE
Boyd, RW
TI Distributed and localized feedback in microresonator sequences for
linear and nonlinear optics
SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
LA English
DT Article
ID COUPLED MICRORING RESONATORS; FUSED-SILICA MICROSPHERES; CRYSTAL
WAVE-GUIDES; ALL-PASS FILTERS; WHISPERING-GALLERY; RING-RESONATOR;
MICRODISK RESONATORS; PHOTONIC CRYSTALS; PHASE RESPONSE; GAP SOLITONS
AB Sequences of optical microresonators can be used to construct densely integrated structures that display slow group velocity, ultrahigh or low dispersion of controllable sign, enhanced self-phase modulation, and nonlinear optical switching. We consider four archetypal geometries consisting of effectively one-dimensional sequences of coupled microresonators. Two of these cases exhibit distributed feedback such as is found in a traditional multilayered structure supporting photonic bandgaps. The other two exhibit localized feedback and resonant enhancement but are free from photonic bandgaps. All of these structures offer unique properties useful for controlling the propagation of light pulses on a chip. (C) 2004 Optical Society of America.
C1 Univ Rochester, Inst Opt, Rochester, NY 14627 USA.
Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada.
Univ Karlsruhe, Inst Theorie Kondensierten Mat, Karlsruhe, Germany.
RP Heebner, JE (reprint author), Lawrence Livermore Natl Lab, L-464,7000 East Ave, Livermore, CA 94550 USA.
RI Heebner, John/C-2411-2009
NR 71
TC 97
Z9 99
U1 1
U2 9
PU OPTICAL SOC AMER
PI WASHINGTON
PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
SN 0740-3224
J9 J OPT SOC AM B
JI J. Opt. Soc. Am. B-Opt. Phys.
PD OCT
PY 2004
VL 21
IS 10
BP 1818
EP 1832
DI 10.1364/JOSAB.21.001818
PG 15
WC Optics
SC Optics
GA 859ZI
UT WOS:000224306500014
ER
PT J
AU Di Mascio, M
Markowitz, M
Louie, M
Hurley, A
Hogan, C
Simon, V
Follmann, D
Ho, DD
Perelson, AS
AF Di Mascio, M
Markowitz, M
Louie, M
Hurley, A
Hogan, C
Simon, V
Follmann, D
Ho, DD
Perelson, AS
TI Dynamics of intermittent viremia during highly active antiretroviral
therapy in patients who initiate therapy during chronic versus acute and
early human immunodeficiency virus type 1 infection
SO JOURNAL OF VIROLOGY
LA English
DT Article
ID RESIDUAL VIRAL REPLICATION; ACUTE HIV-1 INFECTION; IN-VIVO; COMBINATION
THERAPY; ANTIVIRAL THERAPY; LATENT RESERVOIR; PLASMA; RNA; DECAY; CELL
AB The meaning of viral blips in human immunodeficiency virus type 1 (HIV-1)-infected patients treated with seemingly effective highly active antiretroviral therapy (HAART) is still controversial and under investigation. Blips might represent low-level ongoing viral replication in the presence of drug or simply release of virions from the latent reservoir. Patients treated early during HIV-1 infection are more likely to have a lower total body viral burden, a homogenous viral population, and preserved HIV-1-specific immune responses. Consequently, viral blips may be less frequent in them than in patients treated during chronic infection. To test this hypothesis, we compared the occurrence of viral blips in 76 acutely infected patients (primary HIV infection [PHI] group) who started therapy within 6 months of the onset of symptoms with that in 47 patients who started HAART therapy during chronic infection (chronic HIV infection [CHI] group). Viral blip frequency was approximately twofold higher in CHI patients (0.122 +/- 0.12/viral load [VL] sample, mean standard deviation) than in PHI patients (0.066 +/- 0.09/VL sample). However, in both groups, viral blip frequency did not increase with longer periods of observation. Also, no difference in viral blip frequency was observed between treatment subgroups, and the occurrence of a blip was not associated with a recent change in CD4(+) T-cell count. Finally, in PHI patients the VL set point was a significant predictor of blip frequency during treatment.
C1 NIAID, Biostat Res Branch, NIH, Bethesda, MD 20892 USA.
Los Alamos Natl Lab, Div Theoret, Los Alamos, NM USA.
Rockefeller Univ, Aaron Diamond AIDS Res Ctr, New York, NY 10021 USA.
RP Di Mascio, M (reprint author), NIAID, Biostat Res Branch, NIH, MS 7609,6700B Rockledge Dr, Bethesda, MD 20892 USA.
EM mdimascio@niaid.nih.gov
FU NCRR NIH HHS [M01-RR00102, R01 RR006555, RR06555, M01 RR000102]; NIAID
NIH HHS [AI28433, R01 AI047033, R37 AI028433, U01 AI041534, R01
AI028433, AI47033, AI41534]
NR 39
TC 32
Z9 33
U1 0
U2 1
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 OCT
PY 2004
VL 78
IS 19
BP 10566
EP 10573
DI 10.1128/JVI.78.19.10566-10573.2004
PG 8
WC Virology
SC Virology
GA 855HP
UT WOS:000223964300038
PM 15367623
ER
PT J
AU Varnum, SM
Streblow, DN
Monroe, ME
Smith, P
Auberry, KJ
Pasa-Tolic, L
Wang, D
Camp, DG
Rodland, K
Wiley, S
Britt, W
Shenk, T
Smith, RD
Nelson, JA
AF Varnum, SM
Streblow, DN
Monroe, ME
Smith, P
Auberry, KJ
Pasa-Tolic, L
Wang, D
Camp, DG
Rodland, K
Wiley, S
Britt, W
Shenk, T
Smith, RD
Nelson, JA
TI Identification of proteins in human cytomegalovirus (HCMV) particles:
the HCMV proteome
SO JOURNAL OF VIROLOGY
LA English
DT Article
ID MASS-SPECTROMETRY; INTRAVIRAL LOCALIZATION; ENVELOPE COMPLEX;
GLYCOPROTEIN-H; GENE-PRODUCT; VIRUS; GENOME; VIRION; PHOSPHOPROTEIN;
COMPONENTS
AB Human cytomegalovirus (HCMV), a member of the herpesvirus family, is a large complex enveloped virus composed of both viral and cellular gene products. While the sequence of the HCMV genome has been known for over a decade, the full set of viral and cellular proteins that compose the HCMV virion are unknown. To approach this problem we have utilized gel-free two-dimensional capillary liquid chromatography-tandem mass spectrometry (MS/MS) and Fourier transform ion cyclotron resonance MS to identify and determine the relative abundances of viral and cellular proteins in purified HCMV AD169 virions and dense bodies. Analysis of the proteins from purified HCMV virion preparations has indicated that the particle contains significantly more viral proteins than previously known. In this study, we identified 71 HCMV-encoded proteins that included 12 proteins encoded by known viral open reading frames (ORFs) previously not associated with virions and 12 proteins from novel viral ORFs. Analysis of the relative abundance of HCMV proteins indicated that the predominant virion protein was the pp65 tegument protein and that gM rather than gB was the most abundant glycoprotein. We have also identified over 70 host cellular proteins in HCMV virions, which include cellular structural proteins, enzymes, and chaperones. In addition, analysis of HCMV dense bodies indicated that these viral particles are composed of 29 viral proteins with a reduced quantity of cellular proteins in comparison to HCMV virions. This study provides the first comprehensive quantitative analysis of the viral and cellular proteins that compose infectious particles of a large complex virus.
C1 Oregon Hlth Sci Univ, Dept Mol Microbiol & Immunol, Portland, OR 97201 USA.
Pacific NW Natl Lab, Div Biol Sci, Richland, WA USA.
Vaccine Gene Therapy Inst, Portland, OR USA.
Princeton Univ, Dept Mol Biol, Princeton, NJ 08544 USA.
Univ Alabama, Dept Pediat, Birmingham, AL USA.
RP Streblow, DN (reprint author), Oregon Hlth Sci Univ, Dept Mol Microbiol & Immunol, Portland, OR 97201 USA.
EM streblow@ohsu.edu
RI Smith, Richard/J-3664-2012;
OI Smith, Richard/0000-0002-2381-2349; Wiley, Steven/0000-0003-0232-6867;
Wang, Dai/0000-0001-5666-8622
FU NCRR NIH HHS [RR 18522, P41 RR018522]; NIAID NIH HHS [R01 AI021640, AI
21640]
NR 43
TC 338
Z9 405
U1 2
U2 28
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 OCT
PY 2004
VL 78
IS 20
BP 10960
EP 10966
DI 10.1128/JVI.78.20.10960-10966.2004
PG 7
WC Virology
SC Virology
GA 858YO
UT WOS:000224229000013
PM 15452216
ER
PT J
AU Davenport, MP
Ribeiro, RM
Chao, DL
Perelson, AS
AF Davenport, MP
Ribeiro, RM
Chao, DL
Perelson, AS
TI Predicting the impact of a nonsterilizing vaccine against human
immunodeficiency virus
SO JOURNAL OF VIROLOGY
LA English
DT Article
ID CYTOTOXIC T-LYMPHOCYTES; ACTIVE ANTIRETROVIRAL THERAPY; HIV-1 INFECTION;
SEXUAL-BEHAVIOR; UNITED-STATES; DISEASE PROGRESSION; HOMOSEXUAL-MEN;
RISK BEHAVIORS; RHESUS-MONKEYS; SAN-FRANCISCO
AB Studies of human immunodeficiency virus (HIV) vaccines in animal models suggest that it is difficult to induce complete protection from infection (sterilizing immunity) but that it is possible to reduce the viral load and to slow or prevent disease progression following infection. We have developed an age-structured epidemiological model of the effects of a disease-modifying HIV vaccine that incorporates the intrahost dynamics of infection, a transmission rate and host mortality that depend on the viral load, the possible evolution and transmission of vaccine escape mutant viruses, a finite duration of vaccine protection, and possible changes in sexual behavior. Using this model, we investigated the long-term outcome of a disease-modifying vaccine and utilized uncertainty analysis to quantify the effects of our lack of precise knowledge of various parameters. Our results suggest that the extent of viral load reduction in vaccinated infected individuals (compared to unvaccinated individuals) is the key predictor of vaccine efficacy. Reductions in viral load of about 1 log(10) copies ml(-1) would be sufficient to significantly reduce HIV-associated mortality in the first 20 years after the introduction of vaccination. Changes in sexual risk behavior also had a strong impact on the epidemic outcome. The impact of vaccination is dependent on the population in which it is used, with disease-modifying vaccines predicted to have the most impact in areas of low prevalence and rapid epidemic growth. Surprisingly, the extent to which vaccination alters disease progression, the rate of generation of escape mutants, and the transmission of escape mutants are predicted to have only a weak impact on the epidemic outcome over the first 25 years after the introduction of a vaccine.
C1 Los Alamos Natl Lab, Theoret Biol & Biophys Grp, Los Alamos, NM 87545 USA.
Univ New S Wales, Prince Wales Hosp, Dept Haematol, Kensington, NSW 2033, Australia.
Univ New S Wales, Ctr Vasc Res, Kensington, NSW 2033, Australia.
Univ New Mexico, Dept Comp Sci, Albuquerque, NM 87131 USA.
RP Perelson, AS (reprint author), Los Alamos Natl Lab, Theoret Biol & Biophys Grp, MS-K710,T-10, Los Alamos, NM 87545 USA.
EM asp@lanl.gov
RI Barley, Kamal/F-9579-2011;
OI Barley, Kamal/0000-0003-1874-9813; Chao, Dennis/0000-0002-8253-6321
FU NCRR NIH HHS [R01 RR 06555, R01 RR006555]; NIAID NIH HHS [R37 AI 28433,
R37 AI028433]
NR 57
TC 43
Z9 44
U1 0
U2 1
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 OCT
PY 2004
VL 78
IS 20
BP 11340
EP 11351
DI 10.1128/JVI.78.20.11340-11351.2004
PG 12
WC Virology
SC Virology
GA 858YO
UT WOS:000224229000052
PM 15452255
ER
PT J
AU Rittenhouse, TAG
Doyle, MC
Mank, CR
Rothermel, BB
Semlitsch, RD
AF Rittenhouse, TAG
Doyle, MC
Mank, CR
Rothermel, BB
Semlitsch, RD
TI Substrate cues influence habitat selection by spotted salamanders
SO JOURNAL OF WILDLIFE MANAGEMENT
LA English
DT Article
DE behavior; choice test; habitat selection; salamanders; substrate cues
ID AMBYSTOMA-MACULATUM; BREEDING MIGRATION; NEWT FIND; AMPHIBIANS; FOREST;
POND; TEMPERATURE; ORIENTATION; EMIGRATION; TALPOIDEUM
AB Identifying the cues used by spotted salamanders (Ambystoma maculatum) to select forested habitat may provide insight into their habitat requirements and preferences. Environmental factors, such as temperature and moisture, are consistently important factors in explaining the magnitude and timing of annual breeding migrations and are important characteristics of quality terrestrial habitat. These factors, however, may not be used to select terrestrial habitat because microclimate gradients are minimal when salamanders are migrating. To test whether substrates provide cues for habitat selection, we presented juvenile and adult spotted salamanders with a choice between substrates collected from forest or grassland. Further, we presented adults with a choice between litter and a combination of soil and litter collected from forest or grassland. We recorded substrate selection initially and at 3-min intervals for 60 min. Salamanders tended to select the forest substrate more than the grassland substrate in all 4 experiments. Overall, juveniles (88%) selected forest soil more than adults (70%). Adults initially selected forest soil (80%), but the response declined with time. However, when we presented soil and litter in combination, salamanders hid under the litter, and the selection of forest substrate (70%) did not decline with time. The establishment of cues influencing habitat selection provides mechanistic information that may be used to predict habitat selection under scenarios of anthropogenic habitat alteration. Ottr results suggest that substrate characteristics may influence the presence of salamanders within various habitat types.
C1 Univ Missouri, Div Biol Sci, Columbia, MO 65211 USA.
Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA.
RP Rittenhouse, TAG (reprint author), Univ Missouri, Div Biol Sci, 105 Tucker Hall, Columbia, MO 65211 USA.
EM tg9aa@mizzou.edu
RI Rothermel, Betsie/L-6774-2013;
OI Semlitsch, Raymond/0000-0002-7999-5762
NR 30
TC 18
Z9 18
U1 0
U2 22
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0022-541X
J9 J WILDLIFE MANAGE
JI J. Wildl. Manage.
PD OCT
PY 2004
VL 68
IS 4
BP 1151
EP 1158
DI 10.2193/0022-541X(2004)068[1151:SCIHSB]2.0.CO;2
PG 8
WC Ecology; Zoology
SC Environmental Sciences & Ecology; Zoology
GA 887RI
UT WOS:000226322800041
ER
PT J
AU Zhong, K
Ernst, T
AF Zhong, K
Ernst, T
TI Localized in vivo human H-1 MRS at very short echo times
SO MAGNETIC RESONANCE IN MEDICINE
LA English
DT Article
DE brain; magnetic resonance spectroscopy; echo time
ID HUMAN BRAIN; H-1-NMR SPECTROSCOPY; PROTON SPECTROSCOPY;
WATER-SUPPRESSION; SPECTRA
AB A new point-resolved spectroscopy (PRESS) sequence was developed that allows localized human proton MR spectra to be acquired at echo times (TEs) of 10 ms or less. The method was implemented on a 4 Tesla Varian research console and a clinical 3 Tesla Siemens Trio scanner. Human brain spectra acquired in vivo from the prefrontal cortex at TE = 8 ms showed improved signals from coupled resonances (such as glutamate, glutamine, and myo-inositol) compared to spectra acquired at TE = 30 ms. These improvements should result in more accurate quantitation of these metabolites. (C) 2004 Wiley-Liss, Inc.
C1 Chinese Acad Sci, Grad Sch, Key Lab Cognit Sci, Beijing 100101, Peoples R China.
Chinese Acad Sci, Inst Biophys, Key Lab Cognit Sci, Beijing 100101, Peoples R China.
Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA.
RP Zhong, K (reprint author), Chinese Acad Sci, Grad Sch, Key Lab Cognit Sci, 15 Datun Rd, Beijing 100101, Peoples R China.
EM kzhong@cogsci.ibp.ac.cn
FU NIDA NIH HHS [R01-DA12734]; NINDS NIH HHS [1R01 NS38834]
NR 13
TC 23
Z9 23
U1 0
U2 1
PU JOHN WILEY & SONS INC
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN, NJ 07030 USA
SN 0740-3194
J9 MAGNET RESON MED
JI Magn. Reson. Med.
PD OCT
PY 2004
VL 52
IS 4
BP 898
EP 901
DI 10.1002/mrm.20201
PG 4
WC Radiology, Nuclear Medicine & Medical Imaging
SC Radiology, Nuclear Medicine & Medical Imaging
GA 859CB
UT WOS:000224238600026
PM 15389966
ER
PT J
AU Kerns, JA
Newton, J
Berryere, TG
Rubin, EM
Cheng, JF
Schmutz, SM
Barsh, GS
AF Kerns, JA
Newton, J
Berryere, TG
Rubin, EM
Cheng, JF
Schmutz, SM
Barsh, GS
TI Characterization of the dog Agouti gene and a nonagouti mutation in
German Shepherd Dogs
SO MAMMALIAN GENOME
LA English
DT Article
ID STIMULATING-HORMONE-RECEPTOR; COAT COLOR; DOMESTIC DOG; MELANOCORTIN-1
RECEPTOR; VIABLE ALLELES; DOMINANT BLACK; FEATHER COLOR; NMR STRUCTURE;
MSH RECEPTOR; IN-VITRO
AB The interaction between two genes, Agouti and Melanocortin-1 receptor (Mc1r), produces diverse pigment patterns in mammals by regulating the type, amount, and distribution pattern of the two pigment types found in mammalian hair: eumelanin (brown/black) and pheomelanin (yellow/red). In domestic dogs (Canis familiaris), there is a tremendous variation in coat color patterns between and within breeds; however, previous studies suggest that the molecular genetics of pigment-type switching in dogs may differ from that of other mammals. Here we report the identification and characterization of the Agouti gene from domestic dogs, predicted to encode a 131-amino-acid secreted protein 98% identical to the fox homolog, and which maps to chromosome CFA24 in a region of conserved linkage. Comparative analysis of the Doberman Pinscher Agouti cDNA, the fox cDNA, and 180 kb of Doberman Pinscher genomic DNA suggests that, as with laboratory mice, different pigment-type-switching patterns in the canine family are controlled by alternative usage of different promoters and untranslated first exons. A small survey of Labrador Retrievers, Greyhounds, Australian Shepherds, and German Shepherd Dogs did not uncover any polymorphisms, but we identified a single nucleotide variant in black German Shepherd Dogs predicted to cause an Arg-to-Cys substitution at codon 96, which is likely to account for recessive inheritance of a uniform black coat.
C1 Stanford Univ, Sch Med, Beckman Ctr B271A, Dept Genet, Stanford, CA 94305 USA.
Stanford Univ, Dept Pediat, Stanford, CA 94305 USA.
Univ Saskatchewan, Dept Anim & Poultry Sci, Saskatoon, SK S7N 5A8, Canada.
Univ Calif Berkeley, Lawrence Berkeley Lab, Genome Sci Dept, Berkeley, CA 94720 USA.
RP Barsh, GS (reprint author), Stanford Univ, Sch Med, Beckman Ctr B271A, Dept Genet, Stanford, CA 94305 USA.
EM gbarsh@cmgm.stanford.edu
NR 51
TC 57
Z9 62
U1 2
U2 19
PU SPRINGER
PI NEW YORK
PA 233 SPRING STREET, NEW YORK, NY 10013 USA
SN 0938-8990
J9 MAMM GENOME
JI Mamm. Genome
PD OCT
PY 2004
VL 15
IS 10
BP 798
EP 808
DI 10.1007/s00335-004-23778-1
PG 11
WC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology;
Genetics & Heredity
SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology;
Genetics & Heredity
GA 856OH
UT WOS:000224054000005
PM 15520882
ER
PT J
AU Song, Z
AF Song, Z
TI Improved ammonia production?
SO MATERIALS PERFORMANCE
LA English
DT News Item
C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
RP Song, Z (reprint author), Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
EM songz@bnl.gov
NR 0
TC 0
Z9 0
U1 0
U2 0
PU NATL ASSN CORROSION ENG
PI HOUSTON
PA 1440 SOUTH CREEK DRIVE, HOUSTON, TX 77084-4906 USA
SN 0094-1492
J9 MATER PERFORMANCE
JI Mater. Perform.
PD OCT
PY 2004
VL 43
IS 10
BP 10
EP 11
PG 2
WC Materials Science, Characterization & Testing
SC Materials Science
GA 864GX
UT WOS:000224623100006
ER
PT J
AU Ledbetter, H
Ogi, H
Nakamura, N
AF Ledbetter, H
Ogi, H
Nakamura, N
TI Elastic, anelastic, piezoelectric coefficients of monocrystal lithium
niobate
SO MECHANICS OF MATERIALS
LA English
DT Article; Proceedings Paper
CT 18th Australasian Conference on the Mechanics of Structures and
Materials
CY DEC 01-03, 2004
CL Perth, AUSTRALIA
DE acoustic spectroscopy; anelastic coefficients; elastic coefficients;
interferometry; lithium niobate; monocrystal; piezoelectric coefficients
ID ULTRASOUND SPECTROSCOPY; RESONANCE ULTRASOUND; CONSTANTS; CRYSTALS
AB Using improved acoustic spectroscopy, we determined the complete above coefficients (16 independent ones) by measuring the macroscopic resonance frequencies of a single lithium-niobate monocrystal. The improvement consisted of using laser-Doppler interferometry for unambiguous vibration-mode identification. Elastic coefficients C(ijkl) agree well with previous reports that used conventional methods. Piezoelectric coefficients e(ijk) agree with the range of four previous reports. Anelastic coefficients Q(ijkl)(-1) reported for the first time, suggest that the crystal's internal friction arises mainly from dislocations, not from intrinsic multiphonon processes. (C) 2003 Elsevier Ltd. All rights reserved.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Osaka Univ, Grad Sch Engn Sci, Toyonaka, Osaka 5608531, Japan.
RP Ledbetter, H (reprint author), Los Alamos Natl Lab, E536, Los Alamos, NM 87545 USA.
EM hledbet@lanl.gov
NR 17
TC 11
Z9 11
U1 1
U2 12
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0167-6636
J9 MECH MATER
JI Mech. Mater.
PD OCT
PY 2004
VL 36
IS 10
BP 941
EP 947
DI 10.1016/j.mechmat.2003.08.013
PG 7
WC Materials Science, Multidisciplinary; Mechanics
SC Materials Science; Mechanics
GA 830EE
UT WOS:000222103600004
ER
PT J
AU Teklu, A
Ledbetter, H
Kim, S
Boatner, LA
McGuire, M
Keppens, V
AF Teklu, A
Ledbetter, H
Kim, S
Boatner, LA
McGuire, M
Keppens, V
TI Single-crystal elastic constants of Fe-15Ni-15Cr alloy
SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND
MATERIALS SCIENCE
LA English
DT Article
ID STAINLESS-STEEL
AB Resonant ultrasound spectroscopy (RUS) and pulse-echo (PE) superposition techniques have been used to determine the three independent elastic-stiffness constants C(11), C(12), and C(44) as a function of temperature for single crystals of 70Fe-15Ni-15Cr alloy. The values of the elastic moduli determined using RUS and PE are in very good agreement within the range of uncertainties. This particular ternary composition of Fe, Ni, and Cr undergoes an fcc-bcc structural phase transformation near 190 K resulting in a low-temperature ferromagnetic phase. The Debye characteristic temperature was determined to be 447 K from PE and 451 K from RUS measurements. The Zener elastic anisotropy A = 2C(44)/(C(11)-C(12)) is nearly constant: A = 3.53 +/- 0.16 in Fe-Ni-Cr alloys with similar compositions. For these alloys, only small variations are observed in the Griineisen parameter, gamma approximate to 2.08, and in the Poisson ratio, nu([hkl]) = 0.293 +/- 0.013.
C1 Univ Mississippi, Natl Ctr Phys Acoust, University, MS 38677 USA.
Univ Mississippi, Dept Phys, University, MS 38677 USA.
Coll Charleston, Charleston, SC 29424 USA.
Natl Inst Stand & Technol, Boulder, CO 80303 USA.
Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Cornell Univ, Natl Ctr Phys Acoust, Ithaca, NY 14853 USA.
Cornell Univ, Dept Phys, Ithaca, NY 14853 USA.
Univ Tennessee, Natl Ctr Phys Acoust, Knoxville, TN 37996 USA.
Univ Tennessee, Dept Phys, Knoxville, TN 37996 USA.
RP Teklu, A (reprint author), Univ Mississippi, Natl Ctr Phys Acoust, University, MS 38677 USA.
EM teklua@cofc.edu
RI McGuire, Michael/B-5453-2009;
OI McGuire, Michael/0000-0003-1762-9406; Boatner, Lynn/0000-0002-0235-7594
NR 34
TC 30
Z9 30
U1 0
U2 13
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 OCT
PY 2004
VL 35A
IS 10
BP 3149
EP 3154
DI 10.1007/s11661-004-0059-y
PG 6
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 858NA
UT WOS:000224197300010
ER
PT J
AU Tian, H
Liaw, PK
Fielden, DE
Strizak, JP
Mansur, LK
AF Tian, H
Liaw, PK
Fielden, DE
Strizak, JP
Mansur, LK
TI Comparisons of experimental measurements and a theoretical model for
specimen self-heating during fatigue of type 316 LN stainless steel
SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND
MATERIALS SCIENCE
LA English
DT Article
ID HIGH-CYCLE FATIGUE; SPALLATION NEUTRON SOURCE; PRESSURE-VESSEL STEELS;
TEMPERATURE EVOLUTION; THERMOGRAPHIC DETECTION; BEHAVIOR; ALLOY;
FREQUENCY; MERCURY; SUPERALLOY
AB The Type 316 stainless steel is being considered as a candidate target-container material for the spallation neutron source (SNS) being built at the Oak Ridge National Laboratory. Satisfactory behavior under fatigue loading is a requirement for the target container. Stress-controlled fatigue experiments were performed on the 316 stainless steel at 0.2 and 10 Hz with an R ratio of -1, where R = sigma(min)/sigma(max.); sigma(min.) and sigma(max). are the minimum and maximum applied stresses, respectively. At R = -1, a large specimen-temperature increase at 10 Hz was observed, which approached approximately 350 degreesC at a stress amplitude of 263 MPa, and affected fatigue lives. The specimen temperature at 0.2 Hz was about room temperature. The fatigue lives at 10 Hz were found to be shorter than those at 0.2 Hz. Different specimen temperatures were achieved by varying test frequencies. Significant differences in fatigue lives as a function of test frequency were observed with shorter fatigue lives at higher frequencies. The higher specimen temperature at 10 than at 0.2 Hz reduced the fatigue life at 10 Hz. A model based on the dissipation energy of the specimen during fatigue tests was developed to explain the fatigue-life result and predict the specimen-temperature evolution.
C1 Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA.
RP Liaw, PK (reprint author), Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
EM pliaw@utk.edu
NR 34
TC 3
Z9 3
U1 0
U2 4
PU MINERALS METALS MATERIALS SOC
PI WARRENDALE
PA 184 THORN HILL RD, WARRENDALE, PA 15086 USA
SN 1073-5623
J9 METALL MATER TRANS A
JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci.
PD OCT
PY 2004
VL 35A
IS 10
BP 3334
EP 3339
DI 10.1007/s11661-006-0235-3
PG 6
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 858NA
UT WOS:000224197300028
ER
PT J
AU Lee, JH
Liu, S
Miyahara, H
Trivedi, R
AF Lee, JH
Liu, S
Miyahara, H
Trivedi, R
TI Diffusion-coefficient measurements in liquid metallic alloys
SO METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND
MATERIALS PROCESSING SCIENCE
LA English
DT Article
ID DIRECTIONAL-SOLIDIFICATION; UNIDIRECTIONAL SOLIDIFICATION; BINARY ALLOY;
CONVECTION; GROWTH; INTERFACE; STABILITY; COMPOSITES; FRONT; MELT
AB The value of the diffusion coefficient in the liquid (D-l) is generally obtained from the measurement of composition profiles ahead of a quenched planar interface. The experimental results show significant scatter. The main reason for this scatter will be shown to be due to the presence of fluid flow in the liquid. Directional-solidification studies in the Al-Cu system have been carried out to first establish the experimental conditions required for diffusive growth. The composition profiles are then measured to obtain the values of D-l for alloy compositions ranging from 4.0 to 24.0 wt pct Cu. The value of D-l = 2.4 X 10(-3) mm(2)/s was obtained along the liquidus line, and this result is significantly smaller than the values reported in the literature, which vary from 3.0 to 5.5 X 10(-3) mm(2)/s. It is shown that the scatter in the reported values can be correlated with the diameter of the sample used and, thus, with the fluid flow present in their experiments. Detailed experimental procedures to obtain and verify diffusive-growth conditions are outlined, and appropriate analyses of the data are discussed.
C1 Changwon Univ, Dept Met & Mat Sci, Chang Won 641773, South Korea.
US DOE, Ames Lab, Ames, IA 50011 USA.
Kyushu Univ, Dept Mat Sci & Engn, Fukuoka 812, Japan.
Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
RP Trivedi, R (reprint author), Changwon Univ, Dept Met & Mat Sci, Chang Won 641773, South Korea.
EM trivedi@ameslab.gov
NR 35
TC 27
Z9 28
U1 1
U2 17
PU MINERALS METALS MATERIALS SOC
PI WARRENDALE
PA 184 THORN HILL RD, WARRENDALE, PA 15086 USA
SN 1073-5615
J9 METALL MATER TRANS B
JI Metall. Mater. Trans. B-Proc. Metall. Mater. Proc. Sci.
PD OCT
PY 2004
VL 35
IS 5
BP 909
EP 917
DI 10.1007/s11663-004-0085-6
PG 9
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering
SC Materials Science; Metallurgy & Metallurgical Engineering
GA 858ND
UT WOS:000224197600011
ER
PT J
AU Revelle, DO
Brown, PG
Spurny, P
AF Revelle, DO
Brown, PG
Spurny, P
TI Entry dynamics and acoustics/infrasonic/seismic analysis for the
Neuschwanstein meteorite fall
SO METEORITICS & PLANETARY SCIENCE
LA English
DT Article
ID RECORDS; BOLIDE; ATMOSPHERE; WAVES; FRAGMENTATION; INFRASOUND; ORBIT;
MODEL
AB We have analyzed several types of data associated with the well-documented fall of the Neuschwanstein meteorites on April 6, 2002 (a total of three meteorites have been recovered). This includes ground-based photographic and radiometer data as well as infrasound and seismic data from this very significant bolide event (Spurns et al. 2002, 2003). We have also used these data to model the entry of Neuschwanstein, including the expected dynamics, energetics, panchromatic luminosity, and associated fragmentation effects. In addition, we have calculated the differential efficiency of acoustical waves for Neuschwanstein and used these values to compare against the efficiency calculated using available ground-based infrasound data. This new numerical technique has allowed the source height to be determined independent of ray tracing solutions. We have also carried out theoretical ray tracing for a moving point source (not strictly a cylindrical line emission) and for an infinite speed line source. In addition, we have determined the ray turning heights as a function of the source height for both initially upward and downward propagating rays, independent of the explicit ray tracing (detailed propagation path) programs. These results all agree on the origins of the acoustic emission and explicit source heights for Neuschwanstein for the strongest infrasonic signals. Calculated source energies using more than four different independent approaches agree that Neuschwanstein was certainly <500 kg in initial mass, given the initial velocity of 20.95 km/s, resulting in an initial source energy less than or equal to 0.0157-0.0276 kt TNT equivalent (4.185 x 10(12) J). Local source energies at the calculated infrasonic/seismic source altitudes are up to two orders of magnitude smaller than this initial source energy.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Univ Western Ontario, Canada Res Chair Meteor Sci, Dept Phys & Astron, London, ON N6A 3K7, Canada.
Acad Sci Czech Republic, Inst Astron, Ondrejov Observ, CS-25165 Ondrejov, Czech Republic.
RP Revelle, DO (reprint author), Los Alamos Natl Lab, POB 1663,MS D401, Los Alamos, NM 87545 USA.
EM revelle@lanl.gov
RI Spurny, Pavel/G-9044-2014
NR 29
TC 36
Z9 36
U1 0
U2 3
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 1086-9379
EI 1945-5100
J9 METEORIT PLANET SCI
JI Meteorit. Planet. Sci.
PD OCT
PY 2004
VL 39
IS 10
BP 1605
EP 1626
PG 22
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 867ON
UT WOS:000224852000002
ER
PT J
AU Lee, ER
Halyo, V
Lee, IT
Perl, ML
AF Lee, ER
Halyo, V
Lee, IT
Perl, ML
TI Automated electric charge measurements of fluid microdrops using the
Millikan method
SO METROLOGIA
LA English
DT Article
ID QUARK SEARCH EXPERIMENTS; ELEMENTARY-PARTICLES; FRACTIONAL CHARGES;
MATTER; SAMPLES; MERCURY
AB Automated measurements of the electric charge of fluid microdrops precise to up to 0.016 of an electron charge have been made using machine-vision systems to observe the motion of fluid microdrops in air under the influence of an oscillating electric field. The fluid drop diameters have ranged from 7 mum to 25 mum with smaller diameter drops being measured to higher precision. The experimental runs performed for the purpose of attempting to find isolated fractionally electrically charged particles have measured the charges of tens of millions of fluid microdrops using piezoelectrically driven drop-on-demand inkjet-like droplet ejectors as fluid drop sources.
C1 Stanford Linear Accelerator Ctr, Menlo Pk, CA 94025 USA.
RP Lee, ER (reprint author), Stanford Linear Accelerator Ctr, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA.
NR 33
TC 3
Z9 3
U1 1
U2 17
PU BUREAU INT POIDS MESURES
PI SEVRES CEDEX
PA B1 PM PAVILLION DE BRETUEIL, F-92312 SEVRES CEDEX, FRANCE
SN 0026-1394
J9 METROLOGIA
JI Metrologia
PD OCT
PY 2004
VL 41
IS 5
SI SI
BP S147
EP S158
AR PII S0026-1394(04)80311-6
DI 10.1088/0026-1394/41/5/S05
PG 12
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 865VK
UT WOS:000224732000006
ER
PT J
AU Chen, KS
Evans, GH
AF Chen, KS
Evans, GH
TI Two-dimensional modeling of nickel electrodeposition in LIGA
microfabrication
SO MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND
PROCESSING SYSTEMS
LA English
DT Article; Proceedings Paper
CT 5th International Workshop on Micro-Structure Technology
CY JUN, 2003
CL Monterey, CA
AB Two-dimensional processes of nickel electrodeposition in LIGA microfabrication were modeled using the finite-element method and a fully coupled implicit solution scheme via Newton's technique. Species concentrations, electrolyte potential, flow field, and positions of the moving deposition surfaces were computed by solving the species-mass, charge, and momentum conservation equations as well as pseudo-solid mesh-motion equations that employ an arbitrary Lagrangian-Eulerian (ALE) formulation. Coupling this ALE approach with repeated re-meshing and re-mapping makes it possible to track the entire transient deposition processes from start of deposition until the trenches are filled, thus enabling the computation of local current densities that influence the microstructure and functional/mechanical properties of the deposit.
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
Sandia Natl Labs, Livermore, CA 94551 USA.
RP Chen, KS (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM kschen@sandia.gov
NR 6
TC 13
Z9 13
U1 0
U2 1
PU SPRINGER
PI NEW YORK
PA 233 SPRING STREET, NEW YORK, NY 10013 USA
SN 0946-7076
J9 MICROSYST TECHNOL
JI Microsyst. Technol.
PD OCT
PY 2004
VL 10
IS 6-7
BP 444
EP 450
DI 10.1007/s00542-004-0373-8
PG 7
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Materials Science, Multidisciplinary; Physics, Applied
SC Engineering; Science & Technology - Other Topics; Materials Science;
Physics
GA 864DS
UT WOS:000224614400003
ER
PT J
AU Cordill, MJ
Muppidi, T
Moody, NR
Bahr, DF
AF Cordill, MJ
Muppidi, T
Moody, NR
Bahr, DF
TI Effects of microstructure on the mechanical properties of copper films
for high aspect ratio structures
SO MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND
PROCESSING SYSTEMS
LA English
DT Article; Proceedings Paper
CT 5th International Workshop on Micro-Structure Technology
CY JUN, 2003
CL Monterey, CA
ID THIN-FILMS; INDENTATION; DELAMINATION; INTERFACE
AB In this study the mechanical behavior and fracture properties of copper films used in high aspect ratio features of modern microelectronic devices are examined for three different electroplating conditions and yield stresses. Characteristic microstructure of the films is defined using atomic force microscopy and orientation imaging microscopy. Nanoindentation, utilizing continuous stiffness, was used to determine the hardnesses of the copper films, 750-1500 nm in thickness. Nanoindentation and stressed overlayers were then used to induce film delamination to determine the adhesion of the protective tungsten film on copper on a SiO2 substrate. The dimensions of these delaminations were used in mechanics based models to calculate the interfacial fracture toughness of the interface. Results have shown that as the grain size decreases from 1.9 to 1.1 mum the interfacial fracture toughness decreases from 2.6 to 1.4 J/m(2).
C1 Washington State Univ, Sch Mech & Mat Engn, Pullman, WA 99164 USA.
Sandia Natl Labs, Livermore, CA 94551 USA.
RP Cordill, MJ (reprint author), Washington State Univ, Sch Mech & Mat Engn, POB 642920, Pullman, WA 99164 USA.
EM mcordill@mail.wsu.edu
RI Bahr, David/A-6521-2012;
OI Bahr, David/0000-0003-2893-967X; Cordill, Megan/0000-0003-1142-8312
NR 14
TC 6
Z9 6
U1 1
U2 5
PU SPRINGER
PI NEW YORK
PA 233 SPRING STREET, NEW YORK, NY 10013 USA
SN 0946-7076
J9 MICROSYST TECHNOL
JI Microsyst. Technol.
PD OCT
PY 2004
VL 10
IS 6-7
BP 451
EP 455
DI 10.1007/s00542-004-0370-y
PG 5
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Materials Science, Multidisciplinary; Physics, Applied
SC Engineering; Science & Technology - Other Topics; Materials Science;
Physics
GA 864DS
UT WOS:000224614400004
ER
PT J
AU Goods, SH
Kelly, JJ
Yang, NYC
AF Goods, SH
Kelly, JJ
Yang, NYC
TI Electrodeposited nickel-manganese: an alloy for microsystem applications
SO MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND
PROCESSING SYSTEMS
LA English
DT Article; Proceedings Paper
CT 5th International Workshop on Micro-Structure Technology
CY JUN, 2003
CL Monterey, CA
ID ANODIC DECOMPOSITION PRODUCTS; SULFAMATE
AB A process has been developed, using LIGA fabrication techniques, for the electrodeposition of a high strength, heat resistant Ni-Mn alloy to meet the requirements of a mechanical microsystem component. The electrolyte bath chemistry consists of Ni sulfamate to which a small amount of manganese chloride is added. The Mn content for the electrodeposited alloys of interest is generally equal to or less than about 1 wt%. It is shown that its co-deposition with Ni is insensitive to feature aspect ratio and therefore not limited by mass transport effects, permitting uniform alloy deposition. While plating of this alloy at a constant current density yields a high strength deposit, it also results in a highly stressed film that makes the fabrication of thick section deposits problematic. To counter this, a pulsed deposition scheme is employed to fabricate a nanostructured film consisting of alternating nm-thick regions of low stress, relatively soft Ni, and high strength, and highly stressed, NiMn alloy. This moderates the high plating stress of the NiMn alloy and enables the deposition of thick deposits. Yield strengths of over 800 MPa are achievable in the pulse-plated material, with good as-plated ductility (similar to6%). The material loses only about 15% of its original strength after a one hour, 600 degreesC anneal, and no embrittlement is observed since no sulfur-bearing additives are employed. To the contrary, ductility measured as strain to failure is improved.
C1 Sandia Natl Labs, Ctr Mat Sci & Engn, Livermore, CA 94550 USA.
RP Goods, SH (reprint author), Sandia Natl Labs, Ctr Mat Sci & Engn, 7011 East Ave, Livermore, CA 94550 USA.
EM shgoods@sandia.gov
NR 15
TC 26
Z9 26
U1 1
U2 10
PU SPRINGER
PI NEW YORK
PA 233 SPRING STREET, NEW YORK, NY 10013 USA
SN 0946-7076
J9 MICROSYST TECHNOL
JI Microsyst. Technol.
PD OCT
PY 2004
VL 10
IS 6-7
BP 498
EP 505
DI 10.1007/s00542-004-0381-8
PG 8
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Materials Science, Multidisciplinary; Physics, Applied
SC Engineering; Science & Technology - Other Topics; Materials Science;
Physics
GA 864DS
UT WOS:000224614400013
ER
PT J
AU Garino, TJ
Morales, AM
Boyce, BL
AF Garino, TJ
Morales, AM
Boyce, BL
TI The mechanical properties, dimensional tolerance and microstructural
characterization of micro-molded ceramic and metal components
SO MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND
PROCESSING SYSTEMS
LA English
DT Article; Proceedings Paper
CT 5th International Workshop on Micro-Structure Technology
CY JUN, 2003
CL Monterey, CA
ID PLASTICS
AB Metal and ceramic micro-components with similar to10 mum features were fabricated by molding nano-powder-binder mixtures in micro-molds produced from LiGA-formed masters and then sintering to achieve the desired density and properties. The mechanical properties of the metals nickel and 316L stainless steel were measured in tension using miniature dog bone shaped, micro-molded test specimens. The sintering temperature controlled yield stress (YS), the ultimate tensile strength (UTS) and the ductility of the nickel with the YS and the UTS decreasing and the ductility increasing with increasing sintering temperature. For the stainless steel, the YS was nearly 400 MPa, UTS was 650 MPa and the ductility was 3%. The mechanical properties of aluminum oxide ceramics were determined using 4-point bending on miniature micro-molded bend bars. The average modulus of rupture (MOR) was 260 MPa. Careful measurements were made of the dimensional tolerance of the micro-molded parts both before and after sintering using automated optical metrology. The variability in the dimensions of a sintered SS gear after sintering was <3 mum. Finally microscopic examination of the micromolded components indicated that the final grain size was generally less than 1 mum with minimal residual porosity.
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
Sandia Natl Labs, Livermore, CA 94550 USA.
RP Garino, TJ (reprint author), Sandia Natl Labs, MS-1411, Albuquerque, NM 87185 USA.
EM tigarin@sandia.gov
RI Boyce, Brad/H-5045-2012
OI Boyce, Brad/0000-0001-5994-1743
NR 9
TC 14
Z9 14
U1 1
U2 6
PU SPRINGER
PI NEW YORK
PA 233 SPRING STREET, NEW YORK, NY 10013 USA
SN 0946-7076
J9 MICROSYST TECHNOL
JI Microsyst. Technol.
PD OCT
PY 2004
VL 10
IS 6-7
BP 506
EP 509
DI 10.1007/s00542-004-0382-7
PG 4
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Materials Science, Multidisciplinary; Physics, Applied
SC Engineering; Science & Technology - Other Topics; Materials Science;
Physics
GA 864DS
UT WOS:000224614400014
ER
PT J
AU Graham, S
Kelley, J
Yang, N
Borca-Tasciuc, T
AF Graham, S
Kelley, J
Yang, N
Borca-Tasciuc, T
TI The role of microstructure in the electrical and thermal conductivity of
Ni-alloys for LIGA microsystems
SO MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND
PROCESSING SYSTEMS
LA English
DT Article; Proceedings Paper
CT 5th International Workshop on Micro-Structure Technology
CY JUN, 2003
CL Monterey, CA
ID NICKEL ELECTRODEPOSITS; RESISTIVITY; TEMPERATURE; DEPENDENCE; BATH
AB The electrical and thermal transport properties of three electrodeposited Ni-alloys for LIGA applications were investigated. Electrodeposted Ni from a sulfamate bath was shown to possess a microcrystalline grain structure with a thermal conductivity (82 W/mK) and electrical resistivity (7.9 muOmegacm) similar to bulk Ni. The addition of saccharin additives or Mn alloying resulted in refinement of the grain structure which elevated the electrical resistivity and decreased the thermal conductivity. The effects of thermal aging were studied through isothermal annealing. Data show that the Ni-Mn samples were most thermally stable both in grain structure and transport properties. Ni-Watts with saccharin resulted in rapid grain growth and an increase in thermal conductivity and decrease in electrical resistivity to that near bulk Ni. The measurements of transport properties were shown to be sensitive to the initial changes in grain structure in the Ni-Watts and Ni-Mn materials, and thus, can be used to track microstructural evolution.
C1 Sandia Natl Labs, Livermore, CA 94550 USA.
Rensselaer Polytech Inst, Johnson Engn Ctr 203, Troy, NY USA.
RP Graham, S (reprint author), Sandia Natl Labs, 7011 East Ave, Livermore, CA 94550 USA.
EM sgraham@sununo.me.gatech.edu
NR 18
TC 6
Z9 6
U1 0
U2 0
PU SPRINGER
PI NEW YORK
PA 233 SPRING STREET, NEW YORK, NY 10013 USA
SN 0946-7076
J9 MICROSYST TECHNOL
JI Microsyst. Technol.
PD OCT
PY 2004
VL 10
IS 6-7
BP 510
EP 516
DI 10.1007/s00542-004-0383-6
PG 7
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Materials Science, Multidisciplinary; Physics, Applied
SC Engineering; Science & Technology - Other Topics; Materials Science;
Physics
GA 864DS
UT WOS:000224614400015
ER
PT J
AU Makarova, OV
Zyryanov, VN
Divan, R
Mancini, DC
Tang, CM
AF Makarova, OV
Zyryanov, VN
Divan, R
Mancini, DC
Tang, CM
TI Fabrication of grids and collimators using SU-8 as a mold
SO MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND
PROCESSING SYSTEMS
LA English
DT Article; Proceedings Paper
CT 5th International Workshop on Micro-Structure Technology
CY JUN, 2003
CL Monterey, CA
ID X-RAY-LITHOGRAPHY
AB The fabrication process of ultradeep (aspect ratio greater than 25) microchannels in SU-8 photoresist using deep X-ray lithography is described. We have demonstrated that with single-layer coatings, 1-mm-deep trenches in continuous resist layer can be achieved reproducibly. Microchannels with vertical walls and with walls tilted up to 20degrees from vertical have been fabricated. Electroforming of the channels resulted in metal grids and collimators for various applications. A thickness enhancement method for fabrication of very tall structures is also described.
C1 Creatv Microtech Inc, Potomac, MD 20854 USA.
Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Makarova, OV (reprint author), Creatv Microtech Inc, Potomac, MD 20854 USA.
EM makarova@aps.anl.gov
NR 9
TC 1
Z9 1
U1 0
U2 2
PU SPRINGER
PI NEW YORK
PA 233 SPRING STREET, NEW YORK, NY 10013 USA
SN 0946-7076
J9 MICROSYST TECHNOL
JI Microsyst. Technol.
PD OCT
PY 2004
VL 10
IS 6-7
BP 536
EP 539
DI 10.1007/s00542-004-0388-1
PG 4
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Materials Science, Multidisciplinary; Physics, Applied
SC Engineering; Science & Technology - Other Topics; Materials Science;
Physics
GA 864DS
UT WOS:000224614400020
ER
PT J
AU Makarova, OV
Mancini, DC
Moldovan, N
Divan, R
Zyryanov, VN
Tang, CM
AF Makarova, OV
Mancini, DC
Moldovan, N
Divan, R
Zyryanov, VN
Tang, CM
TI Fabrication of focused two-dimensional grids
SO MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND
PROCESSING SYSTEMS
LA English
DT Article; Proceedings Paper
CT 5th International Workshop on Micro-Structure Technology
CY JUN, 2003
CL Monterey, CA
ID X-RAY-LITHOGRAPHY; ADVANCED PHOTON SOURCE
AB A method to fabricating two-dimensional antiscatter grids with septa walls oriented toward the focal point using deep X-ray lithography and copper electroforming is described. These focused grids can be used in mammography to eliminate scattered X-rays, and result in contrast improvement and significantly better image quality in comparison with the conventional one-dimensional antiscatter grids. Freestanding copper antiscatter grids, up to 2 mm thick, 60 mm x 60 mm in size, and focused to one point have been fabricated. This method can be used for fabrication of various other structures with gradually inclined walls.
C1 Creatv Microtech Inc, Potomac, MD 20854 USA.
Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Makarova, OV (reprint author), Creatv Microtech Inc, Potomac, MD 20854 USA.
EM makarova@aps.anl.gov
NR 13
TC 2
Z9 2
U1 0
U2 1
PU SPRINGER
PI NEW YORK
PA 233 SPRING STREET, NEW YORK, NY 10013 USA
SN 0946-7076
J9 MICROSYST TECHNOL
JI Microsyst. Technol.
PD OCT
PY 2004
VL 10
IS 6-7
BP 540
EP 543
DI 10.1007/s00542-004-0389-0
PG 4
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology;
Materials Science, Multidisciplinary; Physics, Applied
SC Engineering; Science & Technology - Other Topics; Materials Science;
Physics
GA 864DS
UT WOS:000224614400021
ER
PT J
AU Luo, H
Chan, DW
Yang, T
Rodriguez, M
Chen, BPC
Leng, M
Mu, JJ
Chen, D
Zhou, SY
Wang, Y
Qin, J
AF Luo, H
Chan, DW
Yang, T
Rodriguez, M
Chen, BPC
Leng, M
Mu, JJ
Chen, D
Zhou, SY
Wang, Y
Qin, J
TI A new XRCC1-Containing complex and its role in cellular survival of
methyl methanesulfonate treatment
SO MOLECULAR AND CELLULAR BIOLOGY
LA English
DT Article
ID STRAND BREAK REPAIR; PROTEIN-KINASE CK2; OCULAR MOTOR APRAXIA;
EARLY-ONSET ATAXIA; DNA-DAMAGE; FHA DOMAIN; XERODERMA-PIGMENTOSUM;
EXCISION-REPAIR; XRCC1; GENE
AB DNA single-strand break repair (SSBR) is important for maintaining genome stability and homeostasis. The current SSBR model derived from an in vitro-reconstituted reaction suggests that the SSBR complex mediated by X-ray repair cross-complementing protein 1 (XRCC1) is assembled sequentially at the site of damage. In this study, we provide biochemical data to demonstrate that two preformed XRCC1 protein complexes exist in cycling HeLa cells. One complex contains known enzymes that are important for SSBR, including DNA ligase 3 (DNL3), polynucleotide kinase 3'-phosphatase, and polymerase beta; the other is a new complex that contains DNL3 and the ataxia with oculomotor apraxia type 1 (AOA) gene product aprataxin. We report the characterization of the new XRCC1 complex. XRCC1 is phosphorylated in vivo and in vitro by CK2, and CK2 phosphorylation of XRCC1 on S518, T519, and T523 largely determines aprataxin binding to XRCC1 though its FHA domain. An acute loss of aprataxin by small interfering RNA renders HeLa cells sensitive to methyl methanesulfonate treatment by a mechanism of shortened half-life of XRCC1. Thus, aprataxin plays a role to maintain the steady-state protein level of XRCC1. Collectively, these data provide insights into the SSBR molecular machinery in the cell and point to the involvement of aprataxin in SSBR, thus linking SSBR to the neurological disease A A.
C1 Baylor Coll Med, Verna & Marrs McLean Dept Biochem & Mol Biol, Houston, TX 77030 USA.
Baylor Coll Med, Dept Mol & Cellular Biol, Houston, TX 77030 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
RP Qin, J (reprint author), Baylor Coll Med, Verna & Marrs McLean Dept Biochem & Mol Biol, T316,1 Baylor Plaza, Houston, TX 77030 USA.
EM jqin@bcm.tmc.edu
FU NCI NIH HHS [CA92584, P01 CA092584]
NR 35
TC 94
Z9 101
U1 0
U2 4
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 OCT
PY 2004
VL 24
IS 19
BP 8356
EP 8365
DI 10.1128/MCB.24.19.8356-8365.2004
PG 10
WC Biochemistry & Molecular Biology; Cell Biology
SC Biochemistry & Molecular Biology; Cell Biology
GA 855QZ
UT WOS:000223990100004
PM 15367657
ER
PT J
AU Enns, L
Bogen, KT
Wizniak, J
Murtha, AD
Weinfeld, M
AF Enns, L
Bogen, KT
Wizniak, J
Murtha, AD
Weinfeld, M
TI Low-dose radiation hypersensitivity is associated with p53-dependent
apoptosis
SO MOLECULAR CANCER RESEARCH
LA English
DT Article
ID TUMOR-CELL LINES; HYPER-RADIOSENSITIVITY; IONIZING-RADIATION; ADAPTIVE
RESPONSE; INCREASED RADIORESISTANCE; ENHANCED SENSITIVITY; DNA-DAMAGE;
P53; ARREST; CYTOTOXICITY
AB Exposure to environmental radiation and the application of new clinical modalities, such as radioimmunotherapy, have heightened the need to understand cellular responses to low dose and low-dose rate ionizing radiation. Many tumor cell lines have been observed to exhibit a hypersensitivity to radiation doses <50 cGy, which manifests as a significant deviation from the clonogenic survival response predicted by a linear-quadratic fit to higher doses. However, the underlying processes for this phenomenon remain unclear. Using a gel microdrop/flow cytometry assay to monitor single cell proliferation at early times postirradiation, we examined the response of human A549 lung carcinoma, T98G glioma, and MCF7 breast carcinoma cell lines exposed to gamma radiation doses from 0 to 200 cGy delivered at 0.18 and 22 cGy/min. The A549 and T98G cells, but not MCF7 cells, showed the marked hypersensitivity at doses <50 cGy. To further characterize the low-dose hypersensitivity, we examined the influence of low-dose radiation on cell cycle status and apoptosis by assays for active caspase-3 and phosphatidylserine translocation (Annexin V binding). We observed that caspase-3 activation and Annexin V binding mirrored the proliferation curves for the cell lines. Furthermore, the low-dose hypersensitivity and Annexin V binding to irradiated A549 and T98G cells were eliminated by treating the cells with pifithrin, an inhibitor of p53. When p53-inactive cell lines (2800T skin fibroblasts and HCT116 colorectal carcinoma cells) were examined for similar patterns, we found that there was no hyperradiosensitivity and apoptosis was not detectable by Annexin V or caspase-3 assays. Our data therefore suggest that low-dose hypersensitivity is associated with p53-dependent apoptosis.
C1 Cross Canc Inst, Edmonton, AB T6G 1Z2, Canada.
Lawrence Livermore Natl Lab, Div Environm Sci, Livermore, CA USA.
RP Weinfeld, M (reprint author), Cross Canc Inst, 11560 Univ Ave, Edmonton, AB T6G 1Z2, Canada.
EM michaelw@cancerboard.ab.ca
NR 40
TC 85
Z9 97
U1 0
U2 4
PU AMER ASSOC CANCER RESEARCH
PI PHILADELPHIA
PA 615 CHESTNUT ST, 17TH FLOOR, PHILADELPHIA, PA 19106-4404 USA
SN 1541-7786
J9 MOL CANCER RES
JI Mol. Cancer Res.
PD OCT
PY 2004
VL 2
IS 10
BP 557
EP 566
PG 10
WC Oncology; Cell Biology
SC Oncology; Cell Biology
GA 864RO
UT WOS:000224650800004
PM 15498930
ER
PT J
AU Gupta, S
Mangel, WF
McGrath, WJ
Perek, JL
Lee, DW
Takamoto, K
Chance, MR
AF Gupta, S
Mangel, WF
McGrath, WJ
Perek, JL
Lee, DW
Takamoto, K
Chance, MR
TI DNA binding provides a molecular strap activating the adenovirus
proteinase
SO MOLECULAR & CELLULAR PROTEOMICS
LA English
DT Article
ID X-RAY RADIOLYSIS; CRYSTAL-STRUCTURE; MASS-SPECTROMETRY; STRUCTURAL
REORGANIZATION; CATALYTIC MECHANISM; SSDNA RECOGNITION; TATA-BOX;
PROTEASE; COMPLEX; COFACTOR
AB Human adenovirus proteinase (AVP) requires two cofactors for maximal activity: pVIc, a peptide derived from the C terminus of adenovirus precursor protein pVI, and the viral DNA. Synchrotron protein footprinting was used to map the solvent accessible cofactor binding sites and to identify conformational changes associated with the binding of cofactors to AVP. The binding of pVIc alone or pVIc and DNA together to AVP triggered significant conformational changes adjacent to the active site cleft sandwiched between the two AVP subdomains. In addition, upon binding of DNA to AVP, it was observed that specific residues on each of the two major subdomains were significantly protected from hydroxyl radicals. Based on the locations of these protected side-chain residues and conserved aromatic and positively charged residues within AVP, a three-dimensional model of DNA binding was constructed. The model indicated that DNA binding can alter the relative orientation of the two AVP domains leading to the partial activation of AVP by DNA. In addition, both pVIc and DNA may independently alter the active site conformation as well as drive it cooperatively to fully activate AVP.
C1 Albert Einstein Coll Med, Dept Physiol & Biophys, Ctr Synchrotron Biosci, Bronx, NY 10461 USA.
Brookhaven Natl Lab, Dept Biol, Upton, NY 11973 USA.
RP Chance, MR (reprint author), Albert Einstein Coll Med, Dept Physiol & Biophys, Ctr Synchrotron Biosci, Bronx, NY 10461 USA.
EM mrc@aecom.yu.edu
FU NCI NIH HHS [R33 CA 83179]; NIAID NIH HHS [AI 41599]; NIBIB NIH HHS [P41
EB 01979]
NR 51
TC 28
Z9 29
U1 1
U2 3
PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA
SN 1535-9476
J9 MOL CELL PROTEOMICS
JI Mol. Cell. Proteomics
PD OCT
PY 2004
VL 3
IS 10
BP 950
EP 959
DI 10.1074/mcp.M400037-MCP200
PG 10
WC Biochemical Research Methods
SC Biochemistry & Molecular Biology
GA 870HK
UT WOS:000225048000002
PM 15220401
ER
PT J
AU Gu, S
Liu, ZH
Pan, SQ
Jiang, ZY
Lu, HM
Amit, O
Bradbury, EM
Hu, CAA
Chen, X
AF Gu, S
Liu, ZH
Pan, SQ
Jiang, ZY
Lu, HM
Amit, O
Bradbury, EM
Hu, CAA
Chen, X
TI Global investigation of p53-induced apoptosis through quantitative
proteomic profiling using comparative amino acid-coded tagging
SO MOLECULAR & CELLULAR PROTEOMICS
LA English
DT Article
ID EFFICIENT PROTEIN IDENTIFICATION; PROLYL ISOMERASE PIN1;
MASS-SPECTROMETRY; MESSENGER-RNA; CELL-DEATH; IN-VIVO; OXIDATIVE STRESS;
PROLINE OXIDASE; CYCLOPHILIN-D; P53
AB p53-induced apoptosis plays a pivotal role in the suppression of tumorigenesis, and mutations in p53 have been found in more than 50% of human tumors. By comparing the proteome of a human colorectal cancer cell transfected with inducible p53 (DLD-1.p53) with that of the control DLD-1 cell line using amino acid-coded mass tagging (AACT)-assisted mass spectrometry, we have broadly identified proteins that are upregulated at the execution stage of the p53-mediated apoptosis. In cell culturing, the deuterium-labeled ( heavy) amino acids were incorporated into the proteome of the induced DLD-1. p53 cells, whereas the DLD-1. vector cells were grown in the unlabeled medium. In high-throughput LC-ESI-MS/MS analyses, the AACT-containing peptides were paired with their unlabeled counterparts, and their relative spectral intensities, reflecting the differential protein expression, were quantified. In addition, our novel AACT-MS method utilized a number of different heavy amino acids as internal markers that significantly increased the peptide sequence coverage for both quantitation and identification purposes. As a result, we were able to identify differentially regulated protein isozymes that would be difficult to distinguish by ICAT-MS methods and to obtain a large dataset of the proteins with altered expression in the late stage of p53-induced apoptosis. The regulated proteins we identified are associated with several distinct functional categories: cell cycle arrest and p53 binding, protein chaperoning, plasma membrane dynamics, stress response, antioxidant enzymes, and anaerobic glycolysis. This result suggests that the p53-induced apoptosis involves the systematic activation of multiple pathways that are glycolysis-relevant, energy-dependent, oxidative stress-mediated, and possibly mediated through interorganelle crosstalks.
C1 Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA.
Univ New Mexico, Hlth Sci Ctr, Dept Biochem & Mol Biol, Bioinformat Div, Albuquerque, NM 87131 USA.
Univ Calif Davis, Sch Med, Dept Biochem & Mol Med, Davis, CA 95616 USA.
RP Hu, CAA (reprint author), Los Alamos Natl Lab, Biosci Div, MS M888,B-2, Los Alamos, NM 87545 USA.
EM ahu@salud.unm.edu; chen_xian@lanl.gov
NR 60
TC 59
Z9 66
U1 0
U2 1
PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA
SN 1535-9476
J9 MOL CELL PROTEOMICS
JI Mol. Cell. Proteomics
PD OCT
PY 2004
VL 3
IS 10
BP 998
EP 1008
DI 10.1074/mcp.M400033-MCP200
PG 11
WC Biochemical Research Methods
SC Biochemistry & Molecular Biology
GA 870HK
UT WOS:000225048000006
PM 15284338
ER
PT J
AU Bao, HM
Radwan
Liang, SF
Yang, PY
Chen, X
AF Bao, Huimin
Radwan
Liang, Shufang
Yang, Pengyuan
Chen, Xian
TI Subcellular comparative proteomics analysis using the AACT technique
SO MOLECULAR & CELLULAR PROTEOMICS
LA English
DT Meeting Abstract
C1 [Bao, Huimin; Radwan; Liang, Shufang; Yang, Pengyuan; Chen, Xian] Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China.
[Chen, Xian] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA
SN 1535-9476
J9 MOL CELL PROTEOMICS
JI Mol. Cell. Proteomics
PD OCT
PY 2004
VL 3
IS 10
SU S
BP S278
EP S278
PG 1
WC Biochemical Research Methods
SC Biochemistry & Molecular Biology
GA V44IA
UT WOS:000202995200665
ER
PT J
AU Gu, S
Wang, T
Harris, MN
Mawuenyega, K
Bae, W
Chen, X
AF Gu, S.
Wang, T.
Harris, M. N.
Mawuenyega, K.
Bae, W.
Chen, X.
TI Systems investigation of protein-protein interactions networks/pathways
for effective therapeutic interventions
SO MOLECULAR & CELLULAR PROTEOMICS
LA English
DT Meeting Abstract
C1 [Gu, S.; Wang, T.; Harris, M. N.; Mawuenyega, K.; Bae, W.; Chen, X.] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA
SN 1535-9476
J9 MOL CELL PROTEOMICS
JI Mol. Cell. Proteomics
PD OCT
PY 2004
VL 3
IS 10
SU S
BP S280
EP S280
PG 1
WC Biochemical Research Methods
SC Biochemistry & Molecular Biology
GA V44IA
UT WOS:000202995200671
ER
PT J
AU Liang, SF
Wang, TY
Du, YC
Bao, HM
Yang, PY
Chen, X
AF Liang, S. F.
Wang, T. Y.
Du, Y. C.
Bao, H. M.
Yang, P. Y.
Chen, X.
TI A MS-based epitope affinity tag strategy for studying protein-protein
interactions occurring in hepatocellular carcinoma
SO MOLECULAR & CELLULAR PROTEOMICS
LA English
DT Meeting Abstract
C1 [Liang, S. F.; Bao, H. M.; Yang, P. Y.; Chen, X.] Fudan Univ, Proteome Res Ctr, Shanghai 200433, Peoples R China.
[Liang, S. F.; Bao, H. M.; Yang, P. Y.; Chen, X.] Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China.
[Wang, T. Y.; Du, Y. C.; Chen, X.] Los Alamos Natl Lab, Los Alamos, NM USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA
SN 1535-9476
J9 MOL CELL PROTEOMICS
JI Mol. Cell. Proteomics
PD OCT
PY 2004
VL 3
IS 10
SU S
BP S21
EP S21
PG 1
WC Biochemical Research Methods
SC Biochemistry & Molecular Biology
GA V44IA
UT WOS:000202995200057
ER
PT J
AU Nikolaev, EN
Shukla, A
Masselon, C
Sharma, S
Pasa-Tolic, L
Smith, R
AF Nikolaev, Eugene N.
Shukla, Anil
Masselon, Christophe
Sharma, Seema
Pasa-Tolic, Ljubljana
Smith, Richard
TI Combination of field asymmetric ion mobility spectrometry (FAIMS) with
FT ICR mass spectrometry for proteomics research
SO MOLECULAR & CELLULAR PROTEOMICS
LA English
DT Meeting Abstract
C1 RAMS, Proteom Res Dept, Inst Biomed Chem, Moscow, Russia.
Pacific NW Natl Lab, Richland, WA 99352 USA.
RI Masselon, Christophe/A-2340-2010; Smith, Richard/J-3664-2012; Nikolaev,
Eugene/N-4498-2013
OI Smith, Richard/0000-0002-2381-2349; Nikolaev, Eugene/0000-0001-6209-2068
NR 0
TC 1
Z9 1
U1 0
U2 2
PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA
SN 1535-9476
J9 MOL CELL PROTEOMICS
JI Mol. Cell. Proteomics
PD OCT
PY 2004
VL 3
IS 10
SU S
BP S136
EP S136
PG 1
WC Biochemical Research Methods
SC Biochemistry & Molecular Biology
GA V44IA
UT WOS:000202995200341
ER
PT J
AU Pounds, JG
Adkins, JN
Shen, Y
Monroe, ME
Camp, DG
Smith, RD
AF Pounds, J. G.
Adkins, J. N.
Shen, Y.
Monroe, M. E.
Camp, D. G.
Smith, R. D.
TI Proteomic analysis of HUPO sera and plasma using mu LC-FTICR-MS with
accurate mass and time (AMT) tag analysis
SO MOLECULAR & CELLULAR PROTEOMICS
LA English
DT Meeting Abstract
C1 Pacific NW Natl Lab, Richland, WA 99352 USA.
RI Smith, Richard/J-3664-2012; Adkins, Joshua/B-9881-2013
OI Smith, Richard/0000-0002-2381-2349; Adkins, Joshua/0000-0003-0399-0700
NR 0
TC 0
Z9 0
U1 0
U2 1
PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA
SN 1535-9476
J9 MOL CELL PROTEOMICS
JI Mol. Cell. Proteomics
PD OCT
PY 2004
VL 3
IS 10
SU S
BP S228
EP S228
PG 1
WC Biochemical Research Methods
SC Biochemistry & Molecular Biology
GA V44IA
UT WOS:000202995200550
ER
PT J
AU Shan, Z
Shui, WQ
Yuan, MJ
Zhang, GA
Xu, XJ
Tu, B
Chen, X
Zhao, DY
Yang, PY
AF Shan, Zhe
Shui, Wenqing
Yuan, Minjia
Zhang, Guoan
Xu, Xuejiao
Tu, Bo
Chen, Xian
Zhao, Dongyuan
Yang, Pengyuan
TI Use of mesoporous material for MALDI-TOFMS
SO MOLECULAR & CELLULAR PROTEOMICS
LA English
DT Meeting Abstract
C1 [Shan, Zhe; Shui, Wenqing; Yuan, Minjia; Zhang, Guoan; Xu, Xuejiao; Tu, Bo; Chen, Xian; Zhao, Dongyuan; Yang, Pengyuan] Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China.
[Chen, Xian] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA.
RI Zhao, Dongyuan/E-5796-2010
OI Zhao, Dongyuan/0000-0002-1642-2510
NR 0
TC 0
Z9 0
U1 0
U2 5
PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA
SN 1535-9476
J9 MOL CELL PROTEOMICS
JI Mol. Cell. Proteomics
PD OCT
PY 2004
VL 3
IS 10
SU S
BP S143
EP S143
PG 1
WC Biochemical Research Methods
SC Biochemistry & Molecular Biology
GA V44IA
UT WOS:000202995200358
ER
PT J
AU Spencer, P
Sabri, MI
Tshala-Katumbay, DD
Palmer, VS
Pounds, JG
Smith, RD
Adkins, JN
AF Spencer, P.
Sabri, M. I.
Tshala-Katumbay, D. D.
Palmer, V. S.
Pounds, J. G.
Smith, R. D.
Adkins, J. N.
TI Toxicoproteomics of solvent neuropathy
SO MOLECULAR & CELLULAR PROTEOMICS
LA English
DT Meeting Abstract
C1 Oregon Hlth & Sci Univ, Portland, OR 97201 USA.
PNNL, Hanford, WA USA.
RI Adkins, Joshua/B-9881-2013
OI Adkins, Joshua/0000-0003-0399-0700
NR 0
TC 0
Z9 0
U1 0
U2 1
PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA
SN 1535-9476
J9 MOL CELL PROTEOMICS
JI Mol. Cell. Proteomics
PD OCT
PY 2004
VL 3
IS 10
SU S
BP S188
EP S188
PG 1
WC Biochemical Research Methods
SC Biochemistry & Molecular Biology
GA V44IA
UT WOS:000202995200462
ER
PT J
AU Webb-Robertson, BM
Havre, SL
Singhal, M
Lipton, MS
Romine, MF
Anderson, GA
AF Webb-Robertson, B. M.
Havre, S. L.
Singhal, M.
Lipton, M. S.
Romine, M. F.
Anderson, G. A.
TI A visualization and analysis tool for discovery from high-throughput
proteomics
SO MOLECULAR & CELLULAR PROTEOMICS
LA English
DT Meeting Abstract
C1 [Webb-Robertson, B. M.; Havre, S. L.; Singhal, M.; Lipton, M. S.; Romine, M. F.; Anderson, G. A.] Pacific NW Natl Lab, Richland, WA 99352 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA
SN 1535-9476
J9 MOL CELL PROTEOMICS
JI Mol. Cell. Proteomics
PD OCT
PY 2004
VL 3
IS 10
SU S
BP S264
EP S264
PG 1
WC Biochemical Research Methods
SC Biochemistry & Molecular Biology
GA V44IA
UT WOS:000202995200636
ER
PT J
AU Macey, JR
Papenfuss, TJ
Kuehl, JV
Fourcade, HM
Boore, JL
AF Macey, JR
Papenfuss, TJ
Kuehl, JV
Fourcade, HM
Boore, JL
TI Phylogenetic relationships among amphisbaenian reptiles based on
complete mitochondrial genomic sequences
SO MOLECULAR PHYLOGENETICS AND EVOLUTION
LA English
DT Article
DE Reptilia; mphisbaenia; Bipes; phylogeny; mitochondrial DNA; genomics;
limb evolution; biogeography; pangaea
ID TRANSFER-RNA GENES; STRUCTURAL FEATURES; TANDEM DUPLICATION;
CONFIDENCE-LIMITS; DNA; EVOLUTION; REPLICATION; REARRANGEMENT;
ORGANIZATION; LIZARDS
AB Complete mitochondrial genomic sequences are reported from 12 members in the four families of the reptile group Amphisbaenia. Analysis of 11,946 aligned nucleotide positions (5797 informative) produces a robust phylogenetic hypothesis. The family Rhineuridae is basal and Bipedidae is the sister taxon to the Amphisbaenidae plus Trogonophidae. Amphisbaenian reptiles are surprisingly old, predating the breakup of Pangaea 200 million years before present, because successive basal taxa (Rhineuridae and Bipedidae) are situated in tectonic regions of Laurasia and nested taxa (Amphisbaenidae and Trogonophidae) are found in Gondwanan regions. Thorough sampling within the Bipedidae shows that it is not tectonic movement of Baja California away from the Mexican mainland that is primary in isolating Bipes species, but rather that primary vicariance occurred between northern and southern groups. Amphisbaenian families show parallel reduction in number of limbs and Bipes species exhibit parallel reduction in number of digits. A. measure is developed for comparing the phylogenetic information content of various genes. A synapomorphic trait defining the Bipedidae is a shift from the typical vertebrate mitochondrial gene arrangement to the derived state of trnE and nad6. In addition, a, tandem duplication of trnT and trnP is observed in Bipes biporus with a pattern of pseudogene formation that varies among populations. The first case of convergent rearrangement of the mitochondrial genome among animals demonstrated by complete genomic sequences is reported. Relative to most vertebrates, the Rhineuridae has the block nad6, trnE switched in order with the block cob, trnT, trnP, as they are in birds. Published by Elsevier Inc.
C1 US DOE, Joint Genome Inst, Dept Evolut Genom, Walnut Creek, CA 94598 USA.
Lawrence Berkeley Lab, Walnut Creek, CA 94598 USA.
Univ Calif Berkeley, Museum Vertebrate Zool, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA.
RP Macey, JR (reprint author), US DOE, Joint Genome Inst, Dept Evolut Genom, 2800 Mitchell Dr, Walnut Creek, CA 94598 USA.
EM jrmacey@lbl.gov
OI Kuehl, Jennifer/0000-0003-2813-2518
NR 41
TC 72
Z9 78
U1 1
U2 7
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 1055-7903
J9 MOL PHYLOGENET EVOL
JI Mol. Phylogenet. Evol.
PD OCT
PY 2004
VL 33
IS 1
BP 22
EP 31
DI 10.1016/j.ympev.2004.05.003
PG 10
WC Biochemistry & Molecular Biology; Evolutionary Biology; Genetics &
Heredity
SC Biochemistry & Molecular Biology; Evolutionary Biology; Genetics &
Heredity
GA 856LT
UT WOS:000224047400003
PM 15324836
ER
PT J
AU Xanthopoulos, E
Muxlow, TWB
Thomasson, P
Garrington, ST
AF Xanthopoulos, E
Muxlow, TWB
Thomasson, P
Garrington, ST
TI MERLIN observations of Stephan's Quintet
SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
LA English
DT Article
DE galaxies : clusters : general; galaxies : interactions; galaxies :
clusters : individual : Stephan's Quintet; galaxies : clusters :
individual : NGC 7319; galaxies : clusters : individual : NGC 7318A;
galaxies : clusters : individual : NGC 7318B
ID RESOLUTION RADIO OBSERVATIONS; EXTENDED 12-MU-M SAMPLE;
SEYFERT-GALAXIES; STAR-FORMATION; CONTINUUM EMISSION; INTRAGROUP MEDIUM;
MOLECULAR GAS; JET; COMPONENTS; STARBURST
AB We present MERLIN L-band images of the compact galaxy group, Stephan's Quintet (SQ). The Seyfert 2 galaxy, NGC 7319, the brightest member of the compact group, is seen to have a triple radio structure typical of many extra-galactic radio sources that have a flat spectrum core and two steep spectrum lobes with hot spots. The two lobes are asymmetrically distributed on opposite sides of the core along the minor axis of the galaxy. Ultraviolet (UV) emission revealed in a high-resolution channel (HRC)/ACS Hubble Space Telescope (HST) image is strongly aligned with the radio plasma and we interpret the intense star formation in the core and north lobe as an event induced by the collision of the north radio jet with over-dense ambient material. In addition, a remapping of archive Very Large Array (VLA) L-band observations reveals more extended emission along the major axis of the galaxy, which is aligned with the optical axis. Images formed from the combined MERLIN and archive VLA data reveal more detailed structure of the two lobes and hot spots.
C1 Univ Calif Davis, Dept Phys, Davis, CA 95616 USA.
Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94550 USA.
Univ Manchester, Jodrell Bank Observ, Macclesfield SK11 9DL, Cheshire, England.
RP Xanthopoulos, E (reprint author), Univ Calif Davis, Dept Phys, Davis, CA 95616 USA.
EM exanthop@igpp.ucllnl.org
OI Muxlow, Thomas/0000-0001-5797-8796
NR 50
TC 7
Z9 7
U1 0
U2 0
PU BLACKWELL PUBLISHING LTD
PI OXFORD
PA 9600 GARSINGTON RD, OXFORD OX4 2DG, OXON, ENGLAND
SN 0035-8711
J9 MON NOT R ASTRON SOC
JI Mon. Not. Roy. Astron. Soc.
PD OCT 1
PY 2004
VL 353
IS 4
BP 1117
EP 1125
DI 10.1111/j.1365-2966.2004.08133.x
PG 9
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 860ZL
UT WOS:000224385800013
ER
PT J
AU Rohrer, B
Fasoli, S
Krebs, HI
Volpe, B
Frontera, WR
Stein, J
Hogan, N
AF Rohrer, B
Fasoli, S
Krebs, HI
Volpe, B
Frontera, WR
Stein, J
Hogan, N
TI Submovements grow larger, fewer, and more blended during stroke recovery
SO MOTOR CONTROL
LA English
DT Article
DE movement smoothness; scattershot algorithm; robotic therapy; ballistic
movement
ID ARM MOVEMENTS; QUANTIZATION; TARGETS; MODEL; HAND
AB Submovements are hypothesized building blocks of human movement, discrete ballistic movements of which more complex movements are composed. Using a novel algorithm, submovements were extracted from the point-to-point movements of 41 persons recovering from stroke. Analysis of the extracted submovements showed that, over the course of therapy, patients' submovements tended to increase in peak speed and duration. The number of submovements employed to produce a given movement decreased. The time between the peaks of adjacent submovements decreased for inpatients (those less than 1 month post-stroke), but not for outpatients (those greater than 12 months post-stroke) as a group. Submovements became more overlapped for all patients, but more markedly for inpatients. The strength and consistency with which it quantified patients' recovery indicates that analysis of submovement overlap might be a useful tool for measuring learning or other changes in motor behavior in future human movement studies.
C1 Sandia Natl Labs, Intelligent Syst & Robot Ctr, Albuquerque, NM 87185 USA.
MIT, Dept Mech Engn, Cambridge, MA 02139 USA.
MIT, Dept Brain & Cognit Sci, Cambridge, MA 02139 USA.
Cornell Univ, Coll Med, Dept Neurol & Neurosci, White Plains, NY 10605 USA.
Harvard Univ, Sch Med, Dept Phys Med & Rehabil, Spaulding Rehabil Hosp, Boston, MA 02114 USA.
RP Rohrer, B (reprint author), Sandia Natl Labs, Intelligent Syst & Robot Ctr, POB 5800, Albuquerque, NM 87185 USA.
FU NICHD NIH HHS [R01-HD36827, R01-HD37397]
NR 28
TC 61
Z9 62
U1 0
U2 2
PU HUMAN KINETICS PUBL INC
PI CHAMPAIGN
PA 1607 N MARKET ST, CHAMPAIGN, IL 61820-2200 USA
SN 1087-1640
J9 MOTOR CONTROL
JI Motor Control
PD OCT
PY 2004
VL 8
IS 4
BP 472
EP 483
PG 12
WC Neurosciences; Sport Sciences
SC Neurosciences & Neurology; Sport Sciences
GA 868KK
UT WOS:000224912300009
PM 15585902
ER
PT J
AU Fletcher, BL
Hullander, ED
Melechko, AV
McKnight, TE
Klein, KL
Hensley, DK
Morrell, JL
Simpson, ML
Doktycz, MJ
AF Fletcher, BL
Hullander, ED
Melechko, AV
McKnight, TE
Klein, KL
Hensley, DK
Morrell, JL
Simpson, ML
Doktycz, MJ
TI Microarrays of biomimetic cells formed by the controlled synthesis of
carbon nanofiber membranes
SO NANO LETTERS
LA English
DT Article
ID GROWTH; FABRICATION; TRANSPORT; SYSTEMS; DEVICES; MANIPULATION;
SEPARATION; TEMPLATES; ARRAYS
AB Biological processes are carried out in a small physical volume, the cell, where molecular composition coupled with defined nanometer-scale architecture bring about function. A major challenge inherent in copying this engineering ideal is the fabrication and filling of enclosed membrane structures. Described here is the combination of deterministically grown carbon nanofibers, micromachining techniques, and piezo-based ink jet technology to create cellular mimics. The synthesis, testing, and application of coupled arrays of semipermeable microstructures with defined, sub-nanoliter fluid contents are demonstrated.
C1 Oak Ridge Natl Lab, Condensed Matter Sci Div, Engn Sci & Technol Div, Oak Ridge, TN 37831 USA.
Oak Ridge Natl Lab, Div Life Sci, Oak Ridge, TN 37831 USA.
Univ Tennessee, Knoxville, TN 37996 USA.
RP Doktycz, MJ (reprint author), Oak Ridge Natl Lab, Condensed Matter Sci Div, Engn Sci & Technol Div, POB 2008,MS 6123, Oak Ridge, TN 37831 USA.
EM doktyczmj@ornl.gov
RI Melechko, Anatoli/B-8820-2008; Morrell-Falvey, Jennifer/A-6615-2011;
Doktycz, Mitchel/A-7499-2011; Simpson, Michael/A-8410-2011; McKnight,
Tim/H-3087-2011; Hensley, Dale/A-6282-2016
OI Morrell-Falvey, Jennifer/0000-0002-9362-7528; Doktycz,
Mitchel/0000-0003-4856-8343; Simpson, Michael/0000-0002-3933-3457;
McKnight, Tim/0000-0003-4326-9117; Hensley, Dale/0000-0001-8763-7765
NR 37
TC 38
Z9 38
U1 0
U2 7
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 OCT
PY 2004
VL 4
IS 10
BP 1809
EP 1814
DI 10.1021/nl0493702
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 862TU
UT WOS:000224514800002
ER
PT J
AU Evans, BR
O'Neill, HM
Hutchens, SA
Bruce, BD
Greenbaum, E
AF Evans, BR
O'Neill, HM
Hutchens, SA
Bruce, BD
Greenbaum, E
TI Enhanced photocatalytic hydrogen evolution by covalent attachment of
plastocyanin to photosystem I
SO NANO LETTERS
LA English
DT Article
ID CHEMICAL CROSS-LINKING; ELECTRON-TRANSFER; FERREDOXIN; SUBUNIT;
IDENTIFICATION; COMPLEX; PHOTOINHIBITION; PHOTOSYNTHESIS; POLYPEPTIDE;
LOCATION
AB A simple photocatalytic hydrogen-evolving system is reported based on intermolecular electron transfer using isolated Photosystem I (PSI) reaction centers as the photoactive element. The system is composed of platinized PSI covalently linked to plastocyanin (PC). Water-soluble sodium ascorbate is the electron donor. PC was attached to PSI by formation of peptide bonds with the cross-linking reagent 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride. Compared to the unlinked proteins, cross-linking of PC and PSI resulted in a substantial increase in light-driven reduction of hexachloroplatinate ions (PtCl62- + 4e(-) --> Ptdown arrow + 6Cl(-)). Hydrogen photoevolution by cross-linked PC-platinized PSI was increased 3-fold both in initial rate and total yield. Analysis of the reaction indicates that covalent linkage of PC to PSI results in a greater rate of total electron throughput from sodium ascorbate to light-activated hydrogen evolution. In addition, although photocatalytic hydrogen-evolving activity was easily demonstrated in the cross-linked system, the native pathway of electron flow yielding enzymatic NADP+ reduction activity was not observed upon addition of the natural PSI electron-accepting system, ferredoxin plus ferredoxin: NADP+ oxidoreductase.
C1 Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
Univ Tennessee, Dept Biochem Cellular & Mol Biol, Knoxville, TN 37996 USA.
Univ Tennessee, Dept Biomed Engn, Knoxville, TN 37996 USA.
Univ Tennessee, Grad Sch Genome Sci & Technol, Knoxville, TN 37996 USA.
Univ Tennessee, Ctr Excellence Environm Biotechnol, Knoxville, TN 37996 USA.
RP Greenbaum, E (reprint author), Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
EM greenbaum@ornl.gov
OI O'Neill, Hugh/0000-0003-2966-5527
NR 29
TC 32
Z9 32
U1 2
U2 18
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 OCT
PY 2004
VL 4
IS 10
BP 1815
EP 1819
DI 10.1021/nl0493388
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 862TU
UT WOS:000224514800003
ER
PT J
AU Chen, FQ
Gerion, D
AF Chen, FQ
Gerion, D
TI Fluorescent CdSe/ZnS nanocrystal-peptide conjugates for long-term,
nontoxic imaging and nuclear targeting in living cells
SO NANO LETTERS
LA English
DT Article
ID SEMICONDUCTOR QUANTUM DOTS; IN-VIVO; TRANSPORT; TRANSDUCTION; RECEPTORS;
SIGNALS; DNA
AB One of the biggest challenges in cell biology is the imaging of living cells. For this purpose, the most commonly used visualization tool is fluorescent markers. However, conventional labels, such as organic fluorescent dyes or green fluorescent proteins (GFP), lack the photostability to allow the tracking of cellular events that happen over a period from minutes to days. In addition, they are either toxic to cells (dyes) or difficult to construct and manipulate (GFP). We report here the use of a new class of fluorescent labels, silanized CdSe/ZnS nanocrystal-peptide conjugates, for imaging the nuclei of living cells. CdSe/ZnS nanocrystals, or so-called quantum dots (qdots), are extremely photostable, and have been used extensively in cellular imaging of fixed cells. Most of the studies about living cells so far have been concerned only with particle entry into the cytoplasm or the localization of receptors on the cell membrane. Specific targeting of qdots to the nucleus of living cells has not been reported in previous studies, due to the lack of a targeting mechanism and proper particle size. Here we demonstrate for the first time the construction of a CdSe/ZnS nanocrystal-peptide conjugate that carries the SV40 large T antigen nuclear localization signal (NLS) and the transfection of the complex into living cells. By a novel adaptation for qdots of a commonly used cell transfection technique, we were able to introduce and retain the NLS-qdots conjugate in living cells for up to a week without detectable negative cellular effects. Moreover, we can visualize the movement of the CdSe/ZnS nanocrystal-peptide conjugates from the cytoplasm to the nucleus, as well as the accumulation of the complex in the cell nucleus, over a long observation time period. This report opens the door for using qdots to visualize long-term biological events that happen in the cell nucleus and provides a new nontoxic, long-term imaging platform for observing nuclear trafficking mechanisms and cell nuclear processes.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Chen, FQ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, MS 74R0157,1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM f_chen@lbl.gov; gerion1@llnl.gov
RI Delehanty, James/F-7454-2012
NR 28
TC 379
Z9 385
U1 21
U2 118
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 OCT
PY 2004
VL 4
IS 10
BP 1827
EP 1832
DI 10.1021/nl049170q
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 862TU
UT WOS:000224514800005
ER
PT J
AU Christen, HM
Puretzky, AA
Cui, H
Belay, K
Fleming, PH
Geohegan, DB
Lowndes, DH
AF Christen, HM
Puretzky, AA
Cui, H
Belay, K
Fleming, PH
Geohegan, DB
Lowndes, DH
TI Rapid growth of long, vertically aligned carbon nanotubes through
efficient catalyst optimization using metal film gradients
SO NANO LETTERS
LA English
DT Article
ID CHEMICAL-VAPOR-DEPOSITION
AB Pulsed laser deposited, orthogonally overlapping metal film gradients are introduced as a versatile method to optimize desired nanomaterial characteristics simultaneously as a function of catalyst composition and film thickness. Catalyst libraries generated by this method are applied here to study the growth of vertically aligned carbon nanotubes by chemical vapor deposition in acetylene from Mo/Fe/Al multilayers on Si. An Fe/Mo atomic ratio of 16:1 was discovered to be optimal for the rapid growth of nanotubes to long lengths, at rates exceeding 1 mm/hr.
C1 Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA.
Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
Florida A&M Univ, Dept Phys, Tallahassee, FL 32307 USA.
RP Christen, HM (reprint author), Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA.
EM christenhm@ornl.gov
RI Christen, Hans/H-6551-2013; Puretzky, Alexander/B-5567-2016; Geohegan,
David/D-3599-2013
OI Christen, Hans/0000-0001-8187-7469; Puretzky,
Alexander/0000-0002-9996-4429; Geohegan, David/0000-0003-0273-3139
NR 15
TC 76
Z9 77
U1 1
U2 11
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 OCT
PY 2004
VL 4
IS 10
BP 1939
EP 1942
DI 10.1021/nl048856f
PG 4
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 862TU
UT WOS:000224514800023
ER
PT J
AU Loong, CK
Thiyagarajan, P
Kolesnikov, AI
AF Loong, CK
Thiyagarajan, P
Kolesnikov, AI
TI Neutron-scattering characterization of nanostructured materials relevant
to biotechnology
SO NANOTECHNOLOGY
LA English
DT Article; Proceedings Paper
CT Nanoscale Devices and System Integration Conference (NDSI-2004)
CY FEB 15-19, 2004
CL Miami, FL
ID MECHANICAL FORCE-FIELDS; NUCLEIC-ACID BASES; VIBRATIONAL DYNAMICS;
OPTICAL SPECTROSCOPIES; INELASTIC-SCATTERING; PROTEIN DYNAMICS;
AMORPHOUS ICE; REFLECTIVITY; FIBRIL; BONE
AB Biomedical nanotechnology is a rapidly emerging field that encompasses many disciplines including medicine, molecular biology, materials physics and chemistry, engineering, etc. The complexity of the targeted systems demands cross-disciplinary research and international collaboration. In the materials front, understanding the fundamental properties at molecular level is important to the realization of the full potential of substances and the fruition of eventual technological applications. Neutron-scattering characterization of biomolecular systems can in principle provide unique information pertinent to nanotechnological applications. But the method is not widely utilized because neutron facilities are not normally located at industrial laboratories and university campuses. We introduce the techniques of neutron scattering for studying the organization of nanoscale structural units and their dynamic response to physical-chemical conditions. Examples are given to illustrate neutron characterization of nanostructured biomaterials and the implications for biotechnology.
C1 Argonne Natl Lab, Intense Pulsed Neutron Source Div, Argonne, IL 60439 USA.
RP Argonne Natl Lab, Intense Pulsed Neutron Source Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM ckloong@anl.gov
RI Kolesnikov, Alexander/I-9015-2012
OI Kolesnikov, Alexander/0000-0003-1940-4649
NR 33
TC 3
Z9 3
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0957-4484
EI 1361-6528
J9 NANOTECHNOLOGY
JI Nanotechnology
PD OCT
PY 2004
VL 15
IS 10
SI SI
BP S664
EP S671
AR PII S0957-4484(04)76289-3
DI 10.1088/0957-4484/15/10/027
PG 8
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Physics
GA 866ZP
UT WOS:000224812200028
ER
PT J
AU Dauter, Z
AF Dauter, Z
TI Phasing in iodine for structure determination
SO NATURE BIOTECHNOLOGY
LA English
DT Editorial Material
ID GENETIC-CODE
C1 NCI, Synchrotron Radiat Res Sect, Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Dauter, Z (reprint author), NCI, Synchrotron Radiat Res Sect, Brookhaven Natl Lab, Bldg 725A, Upton, NY 11973 USA.
EM dauter@bnl.gov
NR 10
TC 1
Z9 2
U1 0
U2 2
PU NATURE PUBLISHING GROUP
PI NEW YORK
PA 345 PARK AVE SOUTH, NEW YORK, NY 10010-1707 USA
SN 1087-0156
J9 NAT BIOTECHNOL
JI Nat. Biotechnol.
PD OCT
PY 2004
VL 22
IS 10
BP 1239
EP 1240
DI 10.1038/nbt1004-1239
PG 2
WC Biotechnology & Applied Microbiology
SC Biotechnology & Applied Microbiology
GA 860EU
UT WOS:000224326100021
PM 15470459
ER
PT J
AU Carlisle, JA
AF Carlisle, JA
TI Diamond films - Precious biosensors
SO NATURE MATERIALS
LA English
DT News Item
ID ULTRANANOCRYSTALLINE DIAMOND; THIN-FILMS
AB Chemical immobilization of electro-active enzymes on conducting nanocrystalline-diamond thin films is laying the basis for diamond-based electrochemical biosensors and bio-interfaces.
C1 Argonne Natl Lab, Div Sci Mat, Argonne, IL 60544 USA.
Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60544 USA.
RP Carlisle, JA (reprint author), Argonne Natl Lab, Div Sci Mat, Argonne, IL 60544 USA.
EM carlisle@anl.gov
NR 7
TC 50
Z9 51
U1 0
U2 16
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 OCT
PY 2004
VL 3
IS 10
BP 668
EP 669
DI 10.1038/nmat1225
PG 2
WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics,
Applied; Physics, Condensed Matter
SC Chemistry; Materials Science; Physics
GA 859EQ
UT WOS:000224246200011
PM 15467689
ER
PT J
AU Zheng, LX
O'Connell, MJ
Doorn, SK
Liao, XZ
Zhao, YH
Akhadov, EA
Hoffbauer, MA
Roop, BJ
Jia, QX
Dye, RC
Peterson, DE
Huang, SM
Liu, J
Zhu, YT
AF Zheng, LX
O'Connell, MJ
Doorn, SK
Liao, XZ
Zhao, YH
Akhadov, EA
Hoffbauer, MA
Roop, BJ
Jia, QX
Dye, RC
Peterson, DE
Huang, SM
Liu, J
Zhu, YT
TI Ultralong single-wall carbon nanotubes
SO NATURE MATERIALS
LA English
DT Article
ID FIBERS; LONG; GROWTH
AB Since the discovery of carbon nanotubes in 1991 by Iijima(1), there has been great interest in creating long, continuous nanotubes for applications where their properties coupled with extended lengths will enable new technology developments(2). For example, ultralong nanotubes can be spun into fibres that are more than an order of magnitude stronger than any current structural material, allowing revolutionary advances in lightweight, high-strength applications(3). Long metallic nanotubes will enable new types of microelectromechanical systems such as micro-electric motors, and can also act as a nanoconducting cable for wiring micro-electronic devices(4). Here we report the synthesis of 4-cm-long individual single-wall carbon nanotubes (SWNTs) at a high growth rate of 11 mum s(-1) by catalytic chemical vapour deposition. Our results suggest the possibility of growing SWNTs continuously without any apparent length limitation.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Duke Univ, Dept Chem, Durham, NC 27708 USA.
RP Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM yzhu@lanl.gov
RI Zhu, Yuntian/B-3021-2008; Zhao, Yonghao/A-8521-2009; Liao,
Xiaozhou/B-3168-2009; Zheng, Lianxi/A-3855-2011; Lujan Center,
LANL/G-4896-2012; Jia, Q. X./C-5194-2008; Liu, Jie/B-4440-2010
OI Zhu, Yuntian/0000-0002-5961-7422; Liao, Xiaozhou/0000-0001-8565-1758;
Zheng, Lianxi/0000-0003-4974-365X; Liu, Jie/0000-0003-0451-6111
NR 20
TC 340
Z9 350
U1 6
U2 116
PU NATURE PUBLISHING GROUP
PI LONDON
PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
SN 1476-1122
EI 1476-4660
J9 NAT MATER
JI Nat. Mater.
PD OCT
PY 2004
VL 3
IS 10
BP 673
EP 676
DI 10.1038/nmat1216
PG 4
WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics,
Applied; Physics, Condensed Matter
SC Chemistry; Materials Science; Physics
GA 859EQ
UT WOS:000224246200014
PM 15359345
ER
PT J
AU Marks, RA
Taylor, ST
Mammana, E
Gronsky, R
Glaeser, AM
AF Marks, RA
Taylor, ST
Mammana, E
Gronsky, R
Glaeser, AM
TI Directed assembly of controlled-misorientation bicrystals
SO NATURE MATERIALS
LA English
DT Article
ID GRAIN-BOUNDARIES; ALUMINA BICRYSTALS; AL2O3 BICRYSTALS; TILT BOUNDARIES;
ALPHA-ALUMINA; GROWTH; PHASE; OXIDE; TIO2; MICROSTRUCTURE
AB Grain boundaries play a vital role in determining materials behaviour(1-3), and the nature of these intercrystalline interfaces is dictated by chemical composition(4), processing history(5), and geometry(2,6)(misorientation and inclination). The interrelation among these variables and material properties may be systematically studied in bicrystals(7). Conventional bicrystal fabrication offers control over these variables, but its ability to mimic grain boundaries in polycrystalline materials is ambiguous(8-12). Here we describe a novel solid-state process for rapidly generating intercrystalline interfaces with controlled geometry and chemistry, applicable to a broad range of materials. A fine-grained polycrystalline layer, contacted by two appropriately misoriented single-crystal seeds, is consumed by an epitaxial solid-state transformation until the directed growth fronts impinge. The seed misorientations establish the geometry of the resulting intercrystalline boundaries, and the composition of the sacrificial polycrystalline layer establishes the chemistry of the boundaries and their adjacent grains. Results from a challenging model system, titanium-doped sapphire, illustrate the viability of the directed assembly technique for preparing high-quality bicrystals in both twist and tilt configurations.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
RP Glaeser, AM (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
EM aglaeser@sapphire.berkeley.edu
NR 37
TC 9
Z9 9
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 OCT
PY 2004
VL 3
IS 10
BP 682
EP 686
DI 10.1038/nmat1214
PG 5
WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics,
Applied; Physics, Condensed Matter
SC Chemistry; Materials Science; Physics
GA 859EQ
UT WOS:000224246200016
PM 15448681
ER
PT J
AU Huang, DT
Miller, DW
Mathew, R
Cassell, R
Holton, JM
Roussel, MF
Schulman, BA
AF Huang, DT
Miller, DW
Mathew, R
Cassell, R
Holton, JM
Roussel, MF
Schulman, BA
TI A unique E1-E2 interaction required for optimal conjugation of the
ubiquitin-like protein NEDD8
SO NATURE STRUCTURAL & MOLECULAR BIOLOGY
LA English
DT Article
ID CYCLIN-DEPENDENT KINASES; CRYSTAL-STRUCTURE; STRUCTURAL BASIS; SUBSTRATE
RECOGNITION; MODIFICATION PATHWAY; LIGASE COMPLEX; FISSION YEAST; CDC34
UBC3; E3 LIGASE; ENZYME
AB Ubiquitin-like proteins (UBLs) such as NEDD8 are transferred to their targets by distinct, parallel, multienzyme cascades that involve the sequential action of E1, E2 and E3 enzymes. How do enzymes within a particular UBL conjugation cascade interact with each other? We report here that the unique N-terminal sequence of NEDD8's E2, Ubc12, selectively recruits NEDD8's E1 to promote thioester formation between Ubc12 and NEDD8. A peptide corresponding to Ubc12's N terminus (Ubc12N26) specifically binds and inhibits NEDD8's E1, the heterodimeric APPBP1-UBA3 complex. The structure of APPBP1-UBA3-Ubc12N26 reveals conserved Ubc12 residues docking in a groove generated by loops conserved in UBA3s but not other E1s. These data explain why the Ubc12-UBA3 interaction is unique to the NEDD8 pathway. These studies define a novel mechanism for E1-E2 interaction and show how enzymes within a particular UBL conjugation cascade can be tethered together by unique protein-protein interactions emanating from their common structural scaffolds.
C1 St Jude Childrens Res Hosp, Dept Biol Struct, Memphis, TN 38105 USA.
St Jude Childrens Res Hosp, Dept Genet & Tumor Cell Biol, Memphis, TN 38105 USA.
St Jude Childrens Res Hosp, Hartwell Ctr Biotechnol & Bioinformat, Memphis, TN 38105 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA.
RP Schulman, BA (reprint author), St Jude Childrens Res Hosp, Dept Biol Struct, 332 N Lauderdale St, Memphis, TN 38105 USA.
EM brenda.schulman@stjude.org
OI Huang, Danny/0000-0002-6192-259X; Roussel, Martine
F./0000-0002-1740-8139
FU NCI NIH HHS [P01 CA071907, P01 CA071907-10, P01CA071907, P30 CA021765,
P30 CA021765-31, P30CA21765]; NIGMS NIH HHS [R01GM69530, R01 GM069530,
R01 GM069530-02]
NR 51
TC 71
Z9 74
U1 0
U2 4
PU NATURE PUBLISHING GROUP
PI NEW YORK
PA 75 VARICK ST, 9TH FLR, NEW YORK, NY 10013-1917 USA
SN 1545-9993
J9 NAT STRUCT MOL BIOL
JI Nat. Struct. Mol. Biol.
PD OCT
PY 2004
VL 11
IS 10
BP 927
EP 935
DI 10.1038/nsmb826
PG 9
WC Biochemistry & Molecular Biology; Biophysics; Cell Biology
SC Biochemistry & Molecular Biology; Biophysics; Cell Biology
GA 857NM
UT WOS:000224124200012
PM 15361859
ER
PT J
AU Graham, D
Maas, P
Donaldson, GB
Carr, C
AF Graham, D
Maas, P
Donaldson, GB
Carr, C
TI Impact damage detection in carbon fibre composites using HTS SQUIDs and
neural networks
SO NDT & E INTERNATIONAL
LA English
DT Article
DE eddy current; neural network; composite laminates
ID NONDESTRUCTIVE EVALUATION
AB A neural network-based data analysis tool, developed to speed the damage detection process for the NDE of impact damaged carbon fibre composites, is discussed. A feature extraction method utilising a gradient threshold search function and a feed forward neural network for pattern recognition were used to develop the system. Impact damaged carbon composite sample plates were scanned with an eddy current-based NDE setup using HTS SQUID gradiometers and double-D excitation coils. Detection of damage sites in data affected by noise spikes caused by environmental disturbances is demonstrated. Finally, a possible design for a future entirely automated scanning system is also introduced. (C) 2004 Elsevier Ltd. All rights reserved.
C1 Univ Strathclyde, Dept Phys, Glasgow G4 0NG, Lanark, Scotland.
Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Graham, D (reprint author), Univ Strathclyde, Dept Phys, Glasgow G4 0NG, Lanark, Scotland.
EM david.graham@strath.ac.uk
OI Graham, Duncan/0000-0002-6079-2105
NR 19
TC 5
Z9 5
U1 0
U2 0
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0963-8695
J9 NDT&E INT
JI NDT E Int.
PD OCT
PY 2004
VL 37
IS 7
BP 565
EP 570
DI 10.1016/j.ndteint.2004.03.001
PG 6
WC Materials Science, Characterization & Testing
SC Materials Science
GA 836GV
UT WOS:000222544700008
ER
PT J
AU Yin, TM
DiFazio, SP
Gunter, LE
Jawdy, SS
Boerjan, W
Tuskan, GA
AF Yin, TM
DiFazio, SP
Gunter, LE
Jawdy, SS
Boerjan, W
Tuskan, GA
TI Genetic and physical mapping of Melampsora rust resistance genes in
Populus and characterization of linkage disequilibrium and flanking
genomic sequence
SO NEW PHYTOLOGIST
LA English
DT Article
DE disease-resistance genes; linkage disequilibrium (LD); Melampsora;
Populus (poplar); recombination repression
ID BULKED SEGREGANT ANALYSIS; THAUMATIN-LIKE PROTEIN; F-SP DELTOIDAE;
LARICI-POPULINA; LEAF RUST; MICROSATELLITE MARKERS; HYBRID POPLAR; MAJOR
GENE; NONHOST RESISTANCE; MOLECULAR MARKERS
AB In an attempt to elucidate the molecular mechanisms of Melampsora rust resistance in Populus trichocarpa, we have mapped two resistance loci, MXC3 and MER, and intensively characterized the flanking genomic sequence for the MXC3 locus and the level of linkage disequilibrium (LD) in natural populations.
We used an interspecific backcross pedigree and a genetic map that was highly saturated with AFLP and SSR markers, and assembled shotgun-sequence data in the region containing markers linked to MXC3.
The two loci were mapped to different linkage groups. Linkage disequilibrium for MXC3 was confined to two closely linked regions spanning 34 and 16 kb, respectively. The MXC3 region also contained six disease-resistance candidate genes.
The MER and MXC3 loci are clearly distinct, and may have different mechanisms of resistance, as different classes of putative resistance genes were present near each locus. The suppressed recombination previously observed in the MXC3 region was possibly caused by extensive hemizygous rearrangements confined to the original parent tree. The relatively low observed LD may facilitate association studies using candidate genes for rust resistance, but will probably inhibit marker-aided selection.
C1 Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37830 USA.
State Univ Ghent VIB, Dept Plant Syst Biol, B-9000 Ghent, Belgium.
RP DiFazio, SP (reprint author), Oak Ridge Natl Lab, Div Environm Sci, POB 2008, Oak Ridge, TN 37830 USA.
EM difazios@ornl.gov
RI Tuskan, Gerald/A-6225-2011; Gunter, Lee/L-3480-2016;
OI Tuskan, Gerald/0000-0003-0106-1289; Gunter, Lee/0000-0003-1211-7532;
Boerjan, Wout/0000-0003-1495-510X
NR 74
TC 41
Z9 54
U1 0
U2 9
PU BLACKWELL PUBLISHING LTD
PI OXFORD
PA 9600 GARSINGTON RD, OXFORD OX4 2DG, OXON, ENGLAND
SN 0028-646X
J9 NEW PHYTOL
JI New Phytol.
PD OCT
PY 2004
VL 164
IS 1
BP 95
EP 105
DI 10.1111/j.1469-8137.2004.01161.x
PG 11
WC Plant Sciences
SC Plant Sciences
GA 851CC
UT WOS:000223662000011
ER
PT J
AU Firestone, RB
AF Firestone, RB
TI Nuclear data sheets for A=21
SO NUCLEAR DATA SHEETS
LA English
DT Review
ID DELAYED-PROTON DECAY; THERMAL-NEUTRON CAPTURE; ATOMIC MASS EVALUATION;
FIRST EXCITED STATES; DRIP-LINE NUCLEI; ENERGY-LEVELS; BETA-DECAY;
LIGHT-NUCLEI; LIFETIME MEASUREMENTS; PARTICLE DECAYS
AB This evaluation of A=21 has been updated from previous evaluations published in 1998En04, 1990En08, and 1978En02. Coverage includes properties of adopted levels and gamma rays, decay-scheme data (energies, intensities and placement of radiations), and cross reference entries. The following tables continue the tradition of showing the systematic relationships between levels in A=21.
C1 Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
RP Firestone, RB (reprint author), Lawrence Berkeley Lab, Div Nucl Sci, MS 88R0192,1 Cyclotron Rd, Berkeley, CA 94720 USA.
OI Firestone, Richard/0000-0003-3833-5546
NR 106
TC 28
Z9 28
U1 0
U2 0
PU ACADEMIC PRESS INC ELSEVIER SCIENCE
PI SAN DIEGO
PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0090-3752
J9 NUCL DATA SHEETS
JI Nucl. Data Sheets
PD OCT
PY 2004
VL 103
IS 2
BP 269
EP 323
DI 10.1016/j.nds.2004.11.003
PG 55
WC Physics, Nuclear
SC Physics
GA 880OE
UT WOS:000225798300001
ER
PT J
AU Takahashi, H
Fredrickson, ED
Schaffer, MJ
Austin, ME
Evans, TE
Lao, LL
Watkins, JG
AF Takahashi, H
Fredrickson, ED
Schaffer, MJ
Austin, ME
Evans, TE
Lao, LL
Watkins, JG
TI Observation of SOL current correlated with MHD activity in NBI heated
DIII-D tokamak discharges
SO NUCLEAR FUSION
LA English
DT Article
ID SCRAPE-OFF LAYER; DIVERTOR TARGET CURRENTS; HALO CURRENTS;
NUMERICAL-SIMULATION; PARALLEL CURRENTS; MODE; PLASMA; JET; ELM;
STABILIZATION
AB This work investigates the potential roles played by the scrape-off-layer current (SOLC) in MHD activity of tokamak plasmas, including effects on stability. SOLCs are found to be an integral part of the MHD activity, with a propensity to flow in a non-axisymmetric pattern and with magnitude potentially large enough to play a role in the MHD stability. Candidate mechanisms that can drive these SOLCs are identified: (a) non-axisymmetric thermoelectric potential, (b) electromotive force from MHD activity, and (c) flux swing, both toroidal and poloidal, of the plasma column. Other potential magnetic consequences of the SOLC are identified: (a) its error field can introduce complications in feedback control schemes for stabilizing MHD activity, and (b) its non-axisymmetric field can be falsely identified as an axisymmetric field by the tokamak control logic and in equilibrium reconstruction. The radial profile of an SOLE observed during a quiescent discharge period is determined, and found to possess polarity reversals as a function of radial distance.
C1 Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
Gen Atom Co, San Diego, CA USA.
Univ Texas, Austin, TX 78712 USA.
Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Takahashi, H (reprint author), Princeton Univ, Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
NR 49
TC 21
Z9 21
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 OCT
PY 2004
VL 44
IS 10
BP 1075
EP 1096
AR PII S0029-5515(04)84909-3
DI 10.1088/0029-5515/44/10/003
PG 22
WC Physics, Fluids & Plasmas
SC Physics
GA 867JM
UT WOS:000224838900004
ER
PT J
AU Perkins, LJ
Orth, CD
Tabak, M
AF Perkins, LJ
Orth, CD
Tabak, M
TI On the utility of antiprotons as drivers for inertial confinement fusion
SO NUCLEAR FUSION
LA English
DT Article
ID POWER-PLANT DESIGN; LASER FUSION; HIGH-GAIN; ENERGY; IGNITION; TARGETS;
FISSION; MICROFISSION; ANTIHYDROGEN; ANNIHILATION
AB In contrast to the large mass, complexity and recirculating power of conventional drivers for inertial confinement fusion (ICF), antiproton annihilation offers a specific energy of 90 MJ mug(-1) and thus a unique form of energy packaging and delivery. In principle, antiproton drivers could provide a profound reduction in system mass for advanced space propulsion by ICF. We examine the physics underlying the use of antiprotons ((p) over bar) to drive various classes of high-yield ICF targets by the methods of volumetric ignition, hotspot ignition and fast ignition. The useable fraction of annihilation deposition energy is determined for both (p) over bar -driven ablative compression and (p) over bar -driven fast ignition, in association with zero- and one-dimensional target burn models. Thereby, we deduce scaling laws for the number of injected antiprotons required per capsule, together with timing and focal spot requirements. The kinetic energy of the injected antiproton beam required to penetrate to the desired annihilation point is always small relative to the deposited annihilation energy. We show that heavy metal seeding of the fuel and/or ablator is required to optimize local deposition of annihilation energy and determine that a minimum of similar to3 x 10(15) injected antiprotons will be required to achieve high yield (several hundred megajoules) in any target configuration. Target gains-i.e. fusion yields divided by the available p-(p) over bar annihilation energy from the injected antiprotons (1.88 GeV/(p) over bar)-range from similar to3 for volumetric ignition targets to similar to600 for fast ignition targets. Antiproton-driven ICF is a speculative concept, and the handling of antiprotons and their required injection precision-temporally and spatially-will present significant technical challenges. The storage and manipulation of low-energy antiprotons, particularly in the form of antihydrogen, is a science in its infancy and a large scale-up of antiproton production over present supply methods would be required to embark on a serious R&D programme for this application.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Perkins, LJ (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94550 USA.
EM perkins3@llnl.gov
NR 80
TC 5
Z9 5
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0029-5515
EI 1741-4326
J9 NUCL FUSION
JI Nucl. Fusion
PD OCT
PY 2004
VL 44
IS 10
BP 1097
EP 1117
AR PII S0029-5515(04)84278-9
DI 10.1088/0029-5515/44/10/004
PG 21
WC Physics, Fluids & Plasmas
SC Physics
GA 867JM
UT WOS:000224838900005
ER
PT J
AU Atoian, GS
Issakov, VV
Karavichev, OV
Karavicheva, TL
Poblaguev, AA
Zeller, ME
AF Atoian, GS
Issakov, VV
Karavichev, OV
Karavicheva, TL
Poblaguev, AA
Zeller, ME
TI Development of Shashlyk calorimeter for KOPIO
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE Shashlyk calorimeter; Monte-Carlo simulation
ID ELECTROMAGNETIC CALORIMETER
AB A large size electromagnetic calorimeter with an energy resolution of 3%/root E (GeV) for 100-500 MeV photons is one of the keystone elements of the KOPIO experiment. In this paper we describe the method of optimization of the Shashlyk module to achieve the required energy resolution. To optimize the calorimeter module design, a model for simulation of the energy resolution was developed. It includes the effects of shower evolution, light collection in scintillator plates, light attenuation in fibers, quantum efficiency of the photo-detector, threshold and noise in the readout system. This model was adjusted using the results of a 0.5-2 GeV/ positron test beam study of a calorimeter prototype with an energy resolution of 4%/root E (GeV). Possible improvements of the Shashlyk energy resolution to 3%/root E (GeV), the level required by KOPIO experiment, are discussed. (c) 2004 Elsevier B.V. All rights reserved.
C1 Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia.
Yale Univ, Dept Phys, New Haven, CT 06511 USA.
RP Poblaguev, AA (reprint author), Brookhaven Natl Lab, 911B, Upton, NY 11973 USA.
EM poblaguev@bnl.gov
NR 10
TC 11
Z9 11
U1 1
U2 1
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 OCT 1
PY 2004
VL 531
IS 3
BP 467
EP 480
DI 10.1016/j.nima.2004.05.094
PG 14
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 908AV
UT WOS:000227760400012
ER
PT J
AU Reifarth, R
Bredeweg, TA
Alpizar-Vicente, A
Browne, JC
Esch, EI
Greife, U
Haight, RC
Hatarik, R
Kronenberg, A
O'Donnell, JM
Rundberg, RS
Ullmann, JL
Vleira, DJ
Wilhelmy, JB
Wouters, JM
AF Reifarth, R
Bredeweg, TA
Alpizar-Vicente, A
Browne, JC
Esch, EI
Greife, U
Haight, RC
Hatarik, R
Kronenberg, A
O'Donnell, JM
Rundberg, RS
Ullmann, JL
Vleira, DJ
Wilhelmy, JB
Wouters, JM
TI Background identification and suppression for the measurement of (n,
gamma) reactions with the DANCE array at LANSCE
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE keV neutron capture; spallation neutron source; calorimetric measurement
ID DETECTOR
AB In the commissioning phase of the DANCE project (Detector for Advanced Neutron Capture Experiments) measurements have been performed with special emphasis on the identification and suppression of possible backgrounds for the planned (n,gamma) experiments. This report describes several background sources, observed in the experiment or anticipated from simulations, which will need to be suppressed in this and in similar detectors that are planned at other facilities. First successes are documented in the suppression of background from scattered neutrons captured in the detector as well as from the internal radiation. Experimental results and simulations using the GEANT code are compared. (c) 2004 Elsevier B.V. All rights reserved.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Colorado Sch Mines, Golden, CO 80401 USA.
RP Reifarth, R (reprint author), Los Alamos Natl Lab, LANSCE-3 MS H855, Los Alamos, NM 87545 USA.
EM reifarth@lanl.gov
NR 12
TC 57
Z9 57
U1 0
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 OCT 1
PY 2004
VL 531
IS 3
BP 530
EP 543
DI 10.1016/j.nima.2004.05.096
PG 14
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 908AV
UT WOS:000227760400016
ER
PT J
AU Field, C
Mazaheri, G
Hughes, EW
Jones, GM
AF Field, C
Mazaheri, G
Hughes, EW
Jones, GM
TI An ion chamber system used at high instantaneous rates
SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS
SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
LA English
DT Article
DE ion chamber; high intensity; radiation hard
ID SYNCHROTRON-RADIATION; BEAM
AB A radiation hard, compact, ion chamber detector system is described. The chambers are planar, with narrow gaps, and are filled with nitrogen gas. They operated at a signal rate equivalent to similar to 2 x 10(8) minimum ionizing tracks per cm(,)(2) delivered in pulses 250 ns long, while monitoring an intense scattered electron flux. (c) 2004 Elsevier B.V. All rights reserved.
C1 Stanford Univ, SLAC, Menlo Pk, CA 94025 USA.
CALTECH, Pasadena, CA 91125 USA.
RP Field, C (reprint author), Stanford Univ, SLAC, 2575 Sandhill Rd,Mail Stop 62, Menlo Pk, CA 94025 USA.
EM sargon@slac.stanford.edu
NR 12
TC 1
Z9 1
U1 0
U2 0
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 OCT 1
PY 2004
VL 531
IS 3
BP 569
EP 576
DI 10.1016/j.nima.2004.05.091
PG 8
WC Instruments & Instrumentation; Nuclear Science & Technology; Physics,
Nuclear; Physics, Particles & Fields
SC Instruments & Instrumentation; Nuclear Science & Technology; Physics
GA 908AV
UT WOS:000227760400020
ER
PT J
AU Allanach, BC
Blair, GA
Freitas, A
Kraml, S
Martyn, HU
Polesello, G
Porod, W
Zerwas, PM
AF Allanach, BC
Blair, GA
Freitas, A
Kraml, S
Martyn, HU
Polesello, G
Porod, W
Zerwas, PM
TI SUSY parameter analysis at TeV and Planck scales
SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS
LA English
DT Article; Proceedings Paper
CT 7th DESY Workshop on Elementary Particle Theory
CY APR 25-30, 2004
CL Zinnowitz, GERMANY
SP DESY
ID SOFT SUPERSYMMETRY-BREAKING; HIGGS-BOSON MASSES; RENORMALIZATION-GROUP
EQUATIONS; GRAND UNIFIED THEORIES; 2-LOOP CORRECTIONS; LINEAR COLLIDERS;
UNIFICATION; E(+)E(-); MSSM; ELECTROWEAK
AB Coherent analyses at future LHC and LC experiments can be used to explore the breaking mechanism of supersymmetry and to reconstruct the fundamental theory at high energies, in particular at the grand unification scale. This will be exemplified for minimal supergravity.
C1 LAPTH, Annecy Le Vieux, France.
DESY, Deutsch Elektronen Synchrotron, D-22603 Hamburg, Germany.
Univ London Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England.
Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
Austrian Acad Sci, Inst Hochenergiephys, A-1050 Vienna, Austria.
CERN, Dept Phys, CH-1211 Geneva 23, Switzerland.
Rhein Westfal TH Aachen Klinikum, Inst Phys 1, D-52074 Aachen, Germany.
IFIC, Inst Fis Corpuscular, E-46071 Valencia, Spain.
RP Allanach, BC (reprint author), LAPTH, Annecy Le Vieux, France.
OI Allanach, Benjamin/0000-0003-4635-6830
NR 42
TC 12
Z9 12
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0920-5632
J9 NUCL PHYS B-PROC SUP
JI Nucl. Phys. B-Proc. Suppl.
PD OCT
PY 2004
VL 135
BP 107
EP 113
DI 10.1016/j.nuclphysbps.2004.09.052
PG 7
WC Physics, Particles & Fields
SC Physics
GA 874IM
UT WOS:000225344100022
ER
PT J
AU Awramik, M
Czakon, M
Freitas, A
Weiglein, G
AF Awramik, M
Czakon, M
Freitas, A
Weiglein, G
TI Two-loop fermionic electroweak corrections to the effective leptonic
weak mixing angle in the standard model
SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS
LA English
DT Article; Proceedings Paper
CT 7th DESY Workshop on Elementary Particle Theory
CY APR 25-30, 2004
CL Zinnowitz, GERMANY
SP DESY
ID VACUUM-POLARIZATION FUNCTIONS; RHO-PARAMETER; DIFFERENTIAL-EQUATIONS;
RADIATIVE-CORRECTIONS; QCD CORRECTIONS; MUON LIFETIME; FORM-FACTOR;
TOP-QUARK; INTERDEPENDENCE; DIAGRAMS
AB We give some details of the recently completed calculation of the full two-loop fermionic corrections to the lept effective leptonic weak mixing angle, sin(2) 0(eff)(lept). Among others, we describe the C++ library DiaGen/IdSolver, which was used to reduce the two-loop light fermion vertex diagrams to linear combinations of master integrals with rational function coefficients.
C1 DESY, D-15738 Zeuthen, Germany.
PAS, Inst Nucl Phys, PL-31342 Krakow, Poland.
Silesian Univ, Inst Phys, PL-40007 Katowice, Poland.
Fermilab Natl Accelerator Lab, Div Theoret Phys, Batavia, IL 60510 USA.
Univ Durham, Inst Particle Phys Phenomenol, Durham DH1 3LE, England.
RP Awramik, M (reprint author), DESY, Platanenallee 6, D-15738 Zeuthen, Germany.
NR 44
TC 16
Z9 16
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0920-5632
J9 NUCL PHYS B-PROC SUP
JI Nucl. Phys. B-Proc. Suppl.
PD OCT
PY 2004
VL 135
BP 119
EP 123
DI 10.1016/j.nuclphysbps.2004.09.054
PG 5
WC Physics, Particles & Fields
SC Physics
GA 874IM
UT WOS:000225344100024
ER
PT J
AU Bern, Z
Dixon, LJ
Kosower, DA
AF Bern, Z
Dixon, LJ
Kosower, DA
TI Two-loop splitting amplitudes
SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS
LA English
DT Article; Proceedings Paper
CT 7th DESY Workshop on Elementary Particle Theory
CY APR 25-30, 2004
CL Zinnowitz, GERMANY
SP DESY
ID TO-LEADING ORDER; GAUGE-THEORY; LOOP AMPLITUDES; COLLINEAR LIMITS; GLUON
AMPLITUDES; QCD AMPLITUDES; FACTORIZATION; BEHAVIOR; PROGRESS;
SCATTERING
AB Splitting amplitudes govern the behavior of scattering amplitudes at the momenta of external legs become collinear. In this talk we outline the calculation of two-loop splitting amplitudes via the unitarity sewing method. This method retains the simple factorization properties of light-cone gauge, but avoids the need for prescriptions such as the principal value or Mandelstam-Leibbrandt ones. The encountered loop momentum integrals are then evaluated using integration-by-parts and Lorentz invariance identities. We outline a variety of applications for these splitting amplitudes.
C1 Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA.
Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA.
CEA Saclay, Serv Phys Theor, F-91191 Gif Sur Yvette, France.
RP Bern, Z (reprint author), Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA.
EM bern@physics.ucla.edu
NR 46
TC 0
Z9 0
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0920-5632
J9 NUCL PHYS B-PROC SUP
JI Nucl. Phys. B-Proc. Suppl.
PD OCT
PY 2004
VL 135
BP 147
EP 151
DI 10.1016/j.nuclphysbps.2004.09.058
PG 5
WC Physics, Particles & Fields
SC Physics
GA 874IM
UT WOS:000225344100028
ER
PT J
AU Rodrigo, G
Catani, S
de Florian, D
Vogelsang, W
AF Rodrigo, G
Catani, S
de Florian, D
Vogelsang, W
TI Collinear splitting, parton evolution and the strange-quark asymmetry of
the nucleon in NNLO QCD
SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS
LA English
DT Article; Proceedings Paper
CT 7th DESY Workshop on Elementary Particle Theory
CY APR 25-30, 2004
CL Zinnowitz, GERMANY
SP DESY
ID TO-LEADING-ORDER; DEEP-INELASTIC SCATTERING; SMALL TRANSVERSE-MOMENTUM;
LOGARITHMIC CORRECTIONS; HADRONIC COLLISIONS; GAUGE-THEORY; AMPLITUDES;
FACTORIZATION; BEHAVIOR; LIMIT
AB We consider the collinear limit of QCD amplitudes at one-loop order, and their factorization properties directly in colour space. These results apply to the multiple collinear limit of an arbitrary number of QCD partons, and are a basic ingredient in many higher-order computations. In particular, we discuss the triple collinear limit and its relation to flavour asymmetries in the QCD evolution of parton densities at three loops. As a phenomenological consequence of this new effect, and of the fact that the nucleon has non-vanishing quark valence densities, we study the perturbative generation of a strange-antistrange asymmetry s(x) - (s) over bar (x) in the nucleon's sea.
C1 Inst Fis Corpuscular, E-46071 Valencia, Spain.
Ist Nazl Fis Nucl, Sez Firenze, I-50019 Florence, Italy.
Univ Florence, Dipartimento Fis, I-50019 Florence, Italy.
Univ Buenos Aires, FCEYN, Dept Fis, RA-1053 Buenos Aires, DF, Argentina.
Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
Brookhaven Natl Lab, RIKEN, BNL Res Ctr, Upton, NY 11973 USA.
RP Inst Fis Corpuscular, Apartado Correos 22085, E-46071 Valencia, Spain.
EM german.rodrigo@ific.uv.es; stefano.catani@fi.infn.it; deflo@df.uba.ar;
wvogelsang@bn1.gov
RI Rodrigo, German /B-8364-2009; de Florian, Daniel/B-6902-2011
OI de Florian, Daniel/0000-0002-3724-0695
NR 40
TC 6
Z9 6
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0920-5632
EI 1873-3832
J9 NUCL PHYS B-PROC SUP
JI Nucl. Phys. B-Proc. Suppl.
PD OCT
PY 2004
VL 135
BP 188
EP 192
DI 10.1016/j.nuclphysbps.2004.09.048
PG 5
WC Physics, Particles & Fields
SC Physics
GA 874IM
UT WOS:000225344100036
ER
PT J
AU Giele, W
Glover, EWN
Zanderighi, G
AF Giele, W
Glover, EWN
Zanderighi, G
TI Numerical evaluation of one-loop diagrams near exceptional momentum
configurations
SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS
LA English
DT Article; Proceedings Paper
CT 7th DESY Workshop on Elementary Particle Theory
CY APR 25-30, 2004
CL Zinnowitz, GERMANY
SP DESY
ID INTEGRALS; REDUCTION
AB One problem which plagues the numerical evaluation of one-loop Feynman diagrams using recursive integration by part relations is a numerical instability near exceptional momentum configurations. In this contribution we will discuss a generic solution to this problem. As an example we consider the case of forward light-by-light scattering.
C1 Fermilab Natl Accelerator Lab, Batavia, IL 60150 USA.
Univ Durham, Dept Phys, Durham DH1 3LE, England.
RP Giele, W (reprint author), Fermilab Natl Accelerator Lab, Batavia, IL 60150 USA.
RI Glover, Edward/A-4597-2012
OI Glover, Edward/0000-0002-0173-4175
NR 9
TC 33
Z9 33
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0920-5632
J9 NUCL PHYS B-PROC SUP
JI Nucl. Phys. B-Proc. Suppl.
PD OCT
PY 2004
VL 135
BP 275
EP 279
DI 10.1016/j.nuclphyspbs.2004.09.028
PG 5
WC Physics, Particles & Fields
SC Physics
GA 874IM
UT WOS:000225344100049
ER
PT J
AU Ng, E
Tang, WP
AF Ng, E
Tang, WP
TI Preconditioning 2001 - Part II - Preface 2
SO NUMERICAL LINEAR ALGEBRA WITH APPLICATIONS
LA English
DT Editorial Material
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Ng, E (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Cyclotron Rd,Mail Stop 50F-1650, Berkeley, CA 94720 USA.
EM EGNg@lbl.gov
NR 0
TC 0
Z9 0
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 OCT-NOV
PY 2004
VL 11
IS 8-9
BP 693
EP 693
DI 10.1002/nla.387
PG 1
WC Mathematics, Applied; Mathematics
SC Mathematics
GA 862SG
UT WOS:000224510600001
ER
PT J
AU Boman, EG
Chen, D
Hendrickson, B
Toledo, S
AF Boman, EG
Chen, D
Hendrickson, B
Toledo, S
TI Maximum-weight-basis preconditioners
SO NUMERICAL LINEAR ALGEBRA WITH APPLICATIONS
LA English
DT Article; Proceedings Paper
CT International Conference on Proconditioning Techniques for Large Sparse
Matrix Problems
CY APR 29-MAY 01, 2001
CL Tahoe City, CA
DE sparse linear solvers; preconditioning; support theory; support
preconditioners; maximum-weight bases; matroids
ID BLOCK INCOMPLETE FACTORIZATIONS; CONDITIONING ANALYSIS; K-TREES;
MATRICES; EIGENVALUES; BOUNDS
AB This paper analyses a novel method for constructing preconditioners for diagonally dominant symmetric positive-definite matrices. The method discussed here is based oil a simple idea: we construct M by go simply dropping offdiagonal non-zeros from A and modifying the diagonal elements to maintain a certain row-sum property. The preconditioners are extensions of Vaidya's augmented maximum-spanning-tree preconditioners.
The preconditioners presented here were also mentioned by Vaidya in all unpublished manuscript, but without a complete analysis. The preconditioners that we present have only O(n + t(2)) nonzeros, where n is the dimension of the matrix and 1less than or equal totless than or equal ton is a parameter that one can choose. Their construction is efficient and gauarantees that the condition number of the preconditioned system is O(n(2)/t(2)) if the number of nonzeros per row in the matrix is bounded by a constant.
We have developed an efficient algorithm to construct these preconditioners and we have implemented it. We used our implementation to solve a simple model problem; we show the combinatorial structure of the preconditioners and we present encouraging convergence results. Copyright (C) 2004 John Wiley Sons, Ltd.
C1 Tel Aviv Univ, Sch Comp Sci, IL-69978 Tel Aviv, Israel.
Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Boman, EG (reprint author), Tel Aviv Univ, Sch Comp Sci, IL-69978 Tel Aviv, Israel.
EM ebornan@cs.sandia.gov; mycroft@tau.ac.il; bah@cs.sandia.gov;
stoledo@tau.ac.il
NR 36
TC 22
Z9 23
U1 0
U2 2
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 OCT-NOV
PY 2004
VL 11
IS 8-9
BP 695
EP 721
DI 10.1002/nla.343
PG 27
WC Mathematics, Applied; Mathematics
SC Mathematics
GA 862SG
UT WOS:000224510600002
ER
PT J
AU Yang, C
Ng, EG
Penczek, PA
AF Yang, C
Ng, EG
Penczek, PA
TI Matrix-free constructions of circulant and block circulant
preconditioners
SO NUMERICAL LINEAR ALGEBRA WITH APPLICATIONS
LA English
DT Article; Proceedings Paper
CT International Conference on Proconditioning Techniques for Large Sparse
Matrix Problems
CY APR 29-MAY 01, 2001
CL Tahoe City, CA
DE iterative methods; Toeplitz matrices; circulant preconditioners;
frequency response
ID TOEPLITZ MATRICES; RADON-TRANSFORM; DECOMPOSITION; EQUATIONS; SYSTEMS;
SPACE
AB A framework for constructing circulant and block circulant preconditioners (C) for a symmetric linear system Ax=barising from signal and image processing applications is presented in this paper. The proposed scheme does not make explicit use of matrix elements of A. It is ideal for applications in which A only exists in the form of a matrix vector multiplication routine, and in which the process of extracting matrix elements of A is costly. The proposed algorithm takes advantage of the fact that for many linear systems arising from signal or image processing applications, eigenvectors of A can be well represented by a small number of Fourier modes. Therefore, the construction of C can be carried out in the frequency domain by carefully choosing the eigenvalues of C so that the condition number of C(T)AC can be reduced significantly. We illustrate how to construct the spectrum of C in a way that allows the smallest eigenvalues of C(T)AC to overlap with those of A extremely well while making the largest eigenvalues of C(T)AC several orders of magnitude smaller than those of A. Numerical examples are provided to demonstrate the effectiveness of the preconditioner on accelerating the solution of linear systems arising from image reconstruction applications. Copyright (C) 2004 John Wiley Sons, Ltd.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Univ Texas, Sch Med, Dept Biochem & Mol Biol, Houston, TX 77030 USA.
RP Yang, C (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, 1 Cyclotron Rd,Mail Stop 50F-1650, Berkeley, CA 94720 USA.
EM cyang@lbl.gov; Pawel.A.Penczek@uth.tmc.edu
NR 26
TC 4
Z9 4
U1 0
U2 1
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 OCT-NOV
PY 2004
VL 11
IS 8-9
BP 773
EP 793
DI 10.1002/nla.346
PG 21
WC Mathematics, Applied; Mathematics
SC Mathematics
GA 862SG
UT WOS:000224510600005
ER
PT J
AU Warsa, JS
Benzi, M
Wareing, TA
Morel, JE
AF Warsa, JS
Benzi, M
Wareing, TA
Morel, JE
TI Preconditioning a mixed discontinuous finite element method for
radiation diffusion
SO NUMERICAL LINEAR ALGEBRA WITH APPLICATIONS
LA English
DT Article; Proceedings Paper
CT International Conference on Proconditioning Techniques for Large Sparse
Matrix Problems
CY APR 29-MAY 01, 2001
CL Tahoe City, CA
DE radiation diffusion; mixed discontinuous finite element method;
indefinite matrices; two-level preconditioning; preconditioned Krylov
subspace methods; inner-outer iteration
ID NONSYMMETRIC LINEAR-SYSTEMS; SADDLE-POINT PROBLEMS; SYNTHETIC
ACCELERATION; INDEFINITE SYSTEMS; ELLIPTIC PROBLEMS; EQUATIONS; GMRES;
ALGORITHMS; INEXACT
AB We propose a multilevel preconditioning strategy for the iterative solution of large sparse linear systems arising from a finite element discretization of the radiation diffusion equations. In particular, these equations are solved using a mixed finite element scheme in order to make the discretization discontinuous, which is imposed by the application in which the diffusion equation will be embedded. The essence of the preconditioner is to use a continuous finite element discretization of the original, elliptic diffusion equation for preconditioning the discontinuous equations. We have found that this preconditioner is very effective and makes the iterative solution of the discontinuous diffusion equations practical for large problems. This approach should be applicable to discontinuous discretizations of other elliptic equations. We show how our preconditioner is developed and applied to radiation diffusion problems Oil unstructured, tetrahedral meshes and show numerical results that illustrate its effectiveness. Published in 2004 by John Wiley Sons, Ltd.
C1 Los Alamos Natl Lab, Transport Methods Grp, Los Alamos, NM 87545 USA.
Emory Univ, Dept Math & Comp Sci, Atlanta, GA 30322 USA.
RP Warsa, JS (reprint author), Los Alamos Natl Lab, Transport Methods Grp, CCS-4-MS D409, Los Alamos, NM 87545 USA.
EM warsa@lanl.gov
NR 35
TC 11
Z9 11
U1 1
U2 1
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 OCT-NOV
PY 2004
VL 11
IS 8-9
BP 795
EP 811
DI 10.1002/nla.347
PG 17
WC Mathematics, Applied; Mathematics
SC Mathematics
GA 862SG
UT WOS:000224510600006
ER
PT J
AU Vuong, LT
Buchholz, BA
Lame, MW
Dueker, SR
AF Vuong, LT
Buchholz, BA
Lame, MW
Dueker, SR
TI Phytochemical research using accelerator mass spectrometry
SO NUTRITION REVIEWS
LA English
DT Review
DE accelerator mass spectrometry; AMS; carbon-14; kinetics; phytochemical
ID HETEROCYCLIC AMINE CARCINOGENS; LC-APCI-MS; BETA-CAROTENE;
ALPHA-TOCOPHEROL; VITAMIN-E; HUMAN URINE; ATRAZINE METABOLITES;
FUNCTIONAL FOODS; FOLIC-ACID; LONG-TERM
AB Vegetables and fruits provide an array of micro-chemicals in the form of vitamins and secondary metabolites (phytochemicals) that may lower the risk of chronic disease. Tracing these phytochemicals at physiologic concentrations has been hindered by a lack of quantitative sensitivity for chemically equivalent tracers that could be used safely in healthy people. Accelerator mass spectrometry is a relatively new technique that provides the necessary sensitivity (in attomoles) and measurement precision (< 3%) towards C-14-labeled phytochemicals for detailed kinetic studies in humans at dietary levels.
C1 Univ Calif Davis, Dept Nutr, Davis, CA 95616 USA.
Univ Calif Davis, Dept Mol Biosci, Davis, CA 95616 USA.
Vitalea Sci Inc, Davis, CA USA.
Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94550 USA.
RP Vuong, LT (reprint author), Univ Calif Davis, Dept Nutr, 3135 Meyer Hall,1 Shields Ave, Davis, CA 95616 USA.
EM srdueker@ucdavis.edu
RI Buchholz, Bruce/G-1356-2011
NR 54
TC 11
Z9 12
U1 0
U2 2
PU INT LIFE SCIENCES INST NORTH AMERICA
PI WASHINGTON
PA ONE THOMAS CIRCLE, N W, 9TH FLOOR, WASHINGTON, DC 20005 USA
SN 0029-6643
J9 NUTR REV
JI Nutr. Rev.
PD OCT
PY 2004
VL 62
IS 10
BP 375
EP 388
DI 10.1301/nr.2004.oct.375-388
PG 14
WC Nutrition & Dietetics
SC Nutrition & Dietetics
GA 903ON
UT WOS:000227435500002
ER
PT J
AU Loik, ME
Breshears, DD
Lauenroth, WK
Belnap, J
AF Loik, ME
Breshears, DD
Lauenroth, WK
Belnap, J
TI A multi-scale perspective of water pulses in dryland ecosystems:
climatology and ecohydrology of the western USA
SO OECOLOGIA
LA English
DT Article
DE drought duration; El Nino Southern Oscillation; evapotranspiration;
infiltration depth; Pacific Decadal Oscillation
ID NORTH-AMERICAN MONSOON; UNITED-STATES; SEMIARID WOODLAND; SOIL-MOISTURE;
ROCKY-MOUNTAINS; EL-NINO; WARMING MANIPULATION; SOUTHERN OSCILLATION;
ARTEMISIA-TRIDENTATA; CHIHUAHUAN DESERT
AB In dryland ecosystems, the timing and magnitude of precipitation pulses drive many key ecological processes, notably soil water availability for plants and soil microbiota. Plant available water has frequently been viewed simply as incoming precipitation, yet processes at larger scales drive precipitation pulses, and the subsequent transformation of precipitation pulses to plant available water are complex. We provide an overview of the factors that influence the spatial and temporal availability of water to plants and soil biota using examples from western USA drylands. Large spatial- and temporal-scale drivers of regional precipitation patterns include the position of the jet streams and frontal boundaries, the North American Monsoon, El Nino Southern Oscillation events, and the Pacific Decadal Oscillation. Topography and orography modify the patterns set up by the larger-scale drivers, resulting in regional patterns (10(2)-10(6) km(2)) of precipitation magnitude, timing, and variation. Together, the large-scale and regional drivers impose important pulsed patterns on long-term precipitation trends at landscape scales, in which most site precipitation is received as small events (<5 mm) and with most of the intervals between events being short (<10 days). The drivers also influence the translation of precipitation events into available water via linkages between soil water content and components of the water budget, including interception, infiltration and runoff, soil evaporation, plant water use and hydraulic redistribution, and seepage below the rooting zone. Soil water content varies not only vertically with depth but also horizontally beneath versus between plants and/or soil crusts in ways that are ecologically important to different plant and crust types. We highlight the importance of considering larger-scale drivers, and their effects on regional patterns; small, frequent precipitation events; and spatio-temporal heterogeneity in soil water content in translating from climatology to precipitation pulses to the dryland ecohydrology of water availability for plants and soil biota.
C1 Univ Calif Santa Cruz, Dept Environm Studies, Santa Cruz, CA 95064 USA.
Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA.
Colorado State Univ, Dept Rangeland Ecosyst Sci, Ft Collins, CO 80523 USA.
US Geol Survey, Moab, UT 84532 USA.
RP Loik, ME (reprint author), Univ Calif Santa Cruz, Dept Environm Studies, 1156 High St, Santa Cruz, CA 95064 USA.
EM mloik@ucsc.edu
RI Breshears, David/B-9318-2009
OI Breshears, David/0000-0001-6601-0058
NR 72
TC 248
Z9 291
U1 15
U2 158
PU SPRINGER
PI NEW YORK
PA 233 SPRING STREET, NEW YORK, NY 10013 USA
SN 0029-8549
J9 OECOLOGIA
JI Oecologia
PD OCT
PY 2004
VL 141
IS 2
BP 269
EP 281
DI 10.1007/s00442-004-1570-y
PG 13
WC Ecology
SC Environmental Sciences & Ecology
GA 862YU
UT WOS:000224528200007
PM 15138879
ER
PT J
AU Patra, A
Baker, GA
Baker, SN
AF Patra, A
Baker, GA
Baker, SN
TI Synthesis and luminescence study of Eu3+ in Zn2SiO4 nanocrystals
SO OPTICAL MATERIALS
LA English
DT Article
ID UP-CONVERSION LUMINESCENCE; REVERSE MICELLES; ER3+-ZRO2 NANOCRYSTALS;
GEL SYNTHESIS; PHOSPHORS; FILMS; PHOTOLUMINESCENCE; FLUORESCENCE;
TEMPERATURE; PARTICLES
AB The sol-emulsion-gel method is used for the preparation of Eu3+ doped Zn2SiO4 nanoparticles. The luminescence spectra at 613 nm (D-5(0) --> F-7(2)) and lifetime of the excited state of Eu3+ ions doped Zn2SiO4 nanocrystals are also found to be sensitive to the concentration (0.25-2.5 mol%) of ions. In case of 1000 degreesC annealed sample (0.25 mol% Eu3+) showed the single component decay of 2.02 ms. However, with increasing the concentration the decay is biexponential. We attribute this to an inter-ion exchange interaction wherein the more rapid decay is due to pair or cluster formation and the longer-lived emission originates from isolated ions within the insulating host. (C) 2004 Elsevier B.V. All rights reserved.
C1 Cent Glass & Ceram Res Inst, Sol Gel Div, Kolkata 700032, W Bengal, India.
Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA.
Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA.
RP Patra, A (reprint author), Cent Glass & Ceram Res Inst, Sol Gel Div, Kolkata 700032, W Bengal, India.
EM apatra@cgcri.res.in
RI Baker, Gary/H-9444-2016
OI Baker, Gary/0000-0002-3052-7730
NR 28
TC 31
Z9 33
U1 1
U2 6
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0925-3467
EI 1873-1252
J9 OPT MATER
JI Opt. Mater.
PD OCT
PY 2004
VL 27
IS 1
BP 15
EP 20
DI 10.1016/j.optmat.2004.01.003
PG 6
WC Materials Science, Multidisciplinary; Optics
SC Materials Science; Optics
GA 863QV
UT WOS:000224577700003
ER
PT J
AU Pang, JS
Leyffer, S
AF Pang, JS
Leyffer, S
TI On the global minimization of the value-at-risk
SO OPTIMIZATION METHODS & SOFTWARE
LA English
DT Article
DE value-at-risk; linear program with equilibrium constraints; smoothing;
branch-and-cut
ID LINEAR COMPLEMENTARITY CONSTRAINTS; MATHEMATICAL PROGRAMS; EQUILIBRIUM
CONSTRAINTS; OPTIMIZATION; CONVERGENCE; ALGORITHM
AB In this article, we consider the nonconvex minimization problem of the value-at-risk (VaR) that arise from financial risk analysis. By considering this problem as a special linear program (LP) with linear complementarity constraints (a bilevel LP to be more precise), we develop upper and lower bounds for the minimum VaR and show how the combined bounding procedures can be used to compute the latter value to global optimality. A numerical example is provided to illustrate the methodology.
C1 Rensselaer Polytech Inst, Dept Math Sci, Troy, NY 12180 USA.
Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA.
RP Pang, JS (reprint author), Rensselaer Polytech Inst, Dept Math Sci, Troy, NY 12180 USA.
EM pangj@rpi.edu
NR 42
TC 19
Z9 19
U1 0
U2 1
PU TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND
SN 1055-6788
J9 OPTIM METHOD SOFTW
JI Optim. Method Softw.
PD OCT
PY 2004
VL 19
IS 5
BP 611
EP 631
DI 10.1080/10556780410001704911
PG 21
WC Computer Science, Software Engineering; Operations Research & Management
Science; Mathematics, Applied
SC Computer Science; Operations Research & Management Science; Mathematics
GA 863KO
UT WOS:000224560700011
ER
PT J
AU Anderson-Cook, CM
Goldfarb, HB
Borror, CM
Montgomery, DC
Canter, KG
Twist, JN
AF Anderson-Cook, CM
Goldfarb, HB
Borror, CM
Montgomery, DC
Canter, KG
Twist, JN
TI Mixture and mixture process variable experiments for pharmaceutical
applications
SO PHARMACEUTICAL STATISTICS
LA English
DT Article
DE analysis of variance; design of experiments; mixture experiments;
response surface methodology; Scheffe model; unconstrained and
constrained regions
ID STATISTICAL TECHNIQUES; FORMULATION; SOLUBILITY; DESIGN; SYSTEMS
AB Many experiments in research and development in the pharmaceutical industry involve mixture components. These are experiments in which the experimental factors are the ingredients of a mixture and the response variable is a function of the relative proportion of each ingredient, not its absolute amount. Thus the mixture ingredients cannot be varied independently. A common variation of the mixture experiment occurs when there are also one or more process factors that can be varied independently of each other and of the mixture components, leading to a mixture process variable experiment. We discuss the design and analysis of these types of experiments, using tablet formulation as an example. Our objective is to encourage greater utilization of these techniques in pharmaceutical research and development. Copyright (C) 2004 John Wiley Sons Ltd.
C1 Arizona State Univ, Dept Ind Engn, Tempe, AZ 85287 USA.
Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Univ Illinois, Chicago, IL 60680 USA.
RP Montgomery, DC (reprint author), Arizona State Univ, Dept Ind Engn, POB 5906, Tempe, AZ 85287 USA.
EM doug.montgomery@asu.edu
NR 12
TC 13
Z9 15
U1 2
U2 7
PU JOHN WILEY & SONS INC
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN, NJ 07030 USA
SN 1539-1604
J9 PHARM STAT
JI Pharm. Stat.
PD OCT-DEC
PY 2004
VL 3
IS 4
BP 247
EP 260
DI 10.1002/pst.138
PG 14
WC Pharmacology & Pharmacy; Statistics & Probability
SC Pharmacology & Pharmacy; Mathematics
GA 881MW
UT WOS:000225872600003
ER
PT J
AU Schreuer, J
Steurer, W
Lograsso, TA
Wu, D
AF Schreuer, J
Steurer, W
Lograsso, TA
Wu, D
TI Elastic properties of icosahedral i-Cd84Yb16 and hexagonal h-Cd51Yb14
SO PHILOSOPHICAL MAGAZINE LETTERS
LA English
DT Article
ID QUASI-CRYSTAL; BRILLOUIN-SCATTERING; APPROXIMANT; ISOTROPY; MODULI; CO
AB The elastic constants, their temperature and pressure derivatives, and coefficients of thermal expansion of the icosahedral quasicrystal i-Cd84Yb16 and of the hexagonal phase h-Cd51Yb14 have been studied by resonant ultrasound spectroscopy, conventional ultrasonic resonance techniques and dilatometry, respectively. The elastic properties of both phases are very similar although they are structurally not related. Contrary to the assumption often found in quasicrystal literature, the similarity of particular physical properties is not necessarily an indication for structural similarity. Further, a first-order phase transition at about 111 K has been observed in h-Cd51Yb14 as indicated by a reversible discontinuity in the thermal expansion.
C1 Goethe Univ Frankfurt, Inst Mineral & Kristallog, D-60054 Frankfurt, Germany.
ETH, Crystallog Lab, Dept Mat, CH-8093 Zurich, Switzerland.
Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
RP Steurer, W (reprint author), Goethe Univ Frankfurt, Inst Mineral & Kristallog, D-60054 Frankfurt, Germany.
EM steurer@mat.ethz.ch
RI Schreuer, Juergen/F-7843-2011; Steurer, Walter/A-3278-2008; Steurer,
Walter/B-6929-2008
OI Steurer, Walter/0000-0003-0211-7088
NR 25
TC 11
Z9 13
U1 0
U2 2
PU TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND
SN 0950-0839
EI 1362-3036
J9 PHIL MAG LETT
JI Philos. Mag. Lett.
PD OCT
PY 2004
VL 84
IS 10
BP 643
EP 653
DI 10.1080/09500830512331329132
PG 11
WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical
Engineering; Physics, Applied; Physics, Condensed Matter
SC Materials Science; Metallurgy & Metallurgical Engineering; Physics
GA 888NR
UT WOS:000226382000004
ER
PT J
AU Thompson, JD
Sarrao, JL
Morales, LA
Wastin, F
Boulet, P
AF Thompson, JD
Sarrao, JL
Morales, LA
Wastin, F
Boulet, P
TI Superconductors containing Pu : PuCoGa5 and related systems
SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
LA English
DT Article; Proceedings Paper
CT 16th International Symposium on Superconductivity (ISS 2003)
CY OCT 27-29, 2003
CL Tsukuba, JAPAN
SP Int Superconduct Technol Ctr
DE PuCoGa5; PuRhGa5; superconductivity
ID TRANSITION-TEMPERATURE; PLUTONIUM
AB PuCoGa5 is the first Pu-based superconductor and has a superconducting transition temperature, T-c = 18.5 K, that is exceeded by only a small number of other intermetallic compounds. The normal and superconducting state properties of PuCoGa5, when considered in the context of the isostructural family of unconventional superconductors CeMIn5, suggest that superconductivity in it as well as in recently discovered PuRhGa5 is unconventional. (C) 2004 Elsevier B.V. All rights reserved.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
European Commiss, JRC, Inst Transuranium Elements, D-76125 Karlsruhe, Germany.
RP Thompson, JD (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM jdt@lanl.gov
RI BOULET, Pascal/D-6494-2011
OI BOULET, Pascal/0000-0003-0684-4397
NR 23
TC 4
Z9 4
U1 0
U2 4
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0921-4534
J9 PHYSICA C
JI Physica C
PD OCT
PY 2004
VL 412
BP 10
EP 13
DI 10.1016/j.physc.2003.11.061
PN 1
PG 4
WC Physics, Applied
SC Physics
GA 865OC
UT WOS:000224711400004
ER
PT J
AU Lanzara, A
AF Lanzara, A
TI Nodal vs antinodal quasiparticles in optimally doped Bi2212
superconductor
SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
LA English
DT Article; Proceedings Paper
CT 16th International Symposium on Superconductivity (ISS 2003)
CY OCT 27-29, 2003
CL Tsukuba, JAPAN
SP Int Superconduct Technol Ctr
DE quasiparticles; Bi2212 superconductors
ID NEUTRON-SCATTERING; LINE-SHAPE; DISPERSION; BI2SR2CACU2O8+DELTA;
YBA2CU3O7; PHONONS
AB High resolution angle resolved photoemission spectroscopy (ARPES) is used to study the temperature and momentum dependence of the quasiparticle dispersion in optimally doped Bi2212 superconductors. Coupling to bosonic excitations, manifested in the form of a kink in the dispersion, are reported at the nodal and antinodal region. Difference and similarities between the nodal and antinodal kink structure are discussed and coupling to phonon modes is presented as possible explanation. (C) 2004 Published by Elsevier B.V.
C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
Lawrence Berkeley Lab, Div Sci Mat, Berkeley, CA 94720 USA.
RP Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM alanzara@lbl.gov
NR 24
TC 0
Z9 0
U1 0
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0921-4534
EI 1873-2143
J9 PHYSICA C
JI Physica C
PD OCT
PY 2004
VL 412
BP 46
EP 50
DI 10.1016/j.physc.2004.01.154
PN 1
PG 5
WC Physics, Applied
SC Physics
GA 865OC
UT WOS:000224711400011
ER
PT J
AU Pintschovius, L
Endoh, Y
Reznik, D
Hiraka, H
Tranquada, J
Reichardt, W
Bourges, P
Sidis, Y
Uchiyama, H
Masui, T
Tajima, S
AF Pintschovius, L
Endoh, Y
Reznik, D
Hiraka, H
Tranquada, J
Reichardt, W
Bourges, P
Sidis, Y
Uchiyama, H
Masui, T
Tajima, S
TI Neutron scattering study of charge fluctuations and spin fluctuations in
optimally doped YBa2Cu3O6.95
SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
LA English
DT Article; Proceedings Paper
CT 16th International Symposium on Superconductivity (ISS 2003)
CY OCT 27-29, 2003
CL Tsukuba, JAPAN
SP Int Superconduct Technol Ctr
DE stripe order; phonons; spin fluctuations; YBa2CU3O7
ID T-C; SUPERCONDUCTORS; MAGNETISM; SPECTRUM
AB Inelastic neutron scattering investigations on optimally doped YBCO revealed a very pronounced temperature dependence of the Cu-O in-plane bond-stretching vibrations along the (0 1 0)-direction: a downward shift of spectral weight with decreasing temperature by at least 10 meV in a narrow range of wave vectors halfway to the zone boundary. The temperature evolution starts around 200 K, well above the superconducting transition temperature. This phonon anomaly provides strong evidence for large electron-phonon coupling. It also indicates an incipient charge density wave instability within the CuO2 planes reminiscent of dynamical charge stripes. The magnetic fluctuations have been investigated in great detail on the same sample. Incommensurate spin fluctuations have been observed for energies both below and above the energy of the resonance peak at E = 41 meV. However, the dispersive nature of these fluctuations as well as their apparent isotropy in the basal plane speak against an interpretation of the spin fluctuation spectrum in the framework of the classical stripe phase picture. (C) 2004 Elsevier B.V. All rights reserved.
C1 Forschungszentrum Karlsruhe, Inst Festkorperphys, D-76021 Karlsruhe, Germany.
Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan.
CEA, CNRS, Leon Brillouin Lab, F-91191 Gif Sur Yvette, France.
Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
ISTEC, Superconduct Res Lab, Koutu Ku, Tokyo 1350062, Japan.
RP Forschungszentrum Karlsruhe, Inst Festkorperphys, POB 3640, D-76021 Karlsruhe, Germany.
EM pini@ifp.fzk.de
RI Tranquada, John/A-9832-2009;
OI Tranquada, John/0000-0003-4984-8857; REZNIK, DMITRY/0000-0001-5749-8549
NR 23
TC 7
Z9 7
U1 1
U2 7
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0921-4534
EI 1873-2143
J9 PHYSICA C
JI Physica C
PD OCT
PY 2004
VL 412
BP 70
EP 75
DI 10.1016/j.physc.2004.01.065
PN 1
PG 6
WC Physics, Applied
SC Physics
GA 865OC
UT WOS:000224711400015
ER
PT J
AU Kwok, WK
Xiao, ZL
Welp, U
Rydh, A
Vlasko-Vlasov, V
Novosad, V
AF Kwok, WK
Xiao, ZL
Welp, U
Rydh, A
Vlasko-Vlasov, V
Novosad, V
TI Commensurate vortex pinning in Nb films patterned onto anodized aluminum
oxide
SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
LA English
DT Article; Proceedings Paper
CT 16th International Symposium on Superconductivity (ISS 2003)
CY OCT 27-29, 2003
CL Tsukuba, JAPAN
SP Int Superconduct Technol Ctr
DE superconductivity; vortex pinning; nanosuperconductivity
ID COLUMNAR DEFECTS; REGULAR ARRAYS; FLUX; LATTICE
AB Anodic aluminum oxide templates containing extended arrays of holes with similar to 30-nm diameter and approximately 128-nm spacing were sputter-coated with Nb. We find pronounced matching effects in the transport and magnetization measurements beyond 4 kOe. In addition, we observe Little-Parks oscillations of the superconducting critical temperature. We compare the flux pinning in the patterned samples to unpatterned reference samples and find a significant enhancement of the critical current. Published by Elsevier B.V..
C1 Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM wkwok@anl.gov
RI Novosad, Valentyn/C-2018-2014; Rydh, Andreas/A-7068-2012; Novosad, V
/J-4843-2015
OI Rydh, Andreas/0000-0001-6641-4861;
NR 21
TC 9
Z9 9
U1 1
U2 6
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0921-4534
EI 1873-2143
J9 PHYSICA C
JI Physica C
PD OCT
PY 2004
VL 412
BP 347
EP 351
DI 10.1016/j.physc.2004.01.054
PN 1
PG 5
WC Physics, Applied
SC Physics
GA 865OC
UT WOS:000224711400075
ER
PT J
AU Bending, SJ
Grigorenko, AN
Crisan, IA
Cole, D
Koshelev, AE
Clem, JR
Tamegai, T
Ooi, S
AF Bending, SJ
Grigorenko, AN
Crisan, IA
Cole, D
Koshelev, AE
Clem, JR
Tamegai, T
Ooi, S
TI Interacting crossing vortex lattices in the presence of quenched
disorder
SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
LA English
DT Article; Proceedings Paper
CT 16th International Symposium on Superconductivity (ISS 2003)
CY OCT 27-29, 2003
CL Tsukuba, JAPAN
SP Int Superconduct Technol Ctr
DE layered superconductors; vortices; crossing lattices; vortex pumps
ID HIGH-TEMPERATURE SUPERCONDUCTORS; LAYERED SUPERCONDUCTORS;
SINGLE-CRYSTALS; CHAIN STATE; BI2SR2CACU2O8+DELTA; ANISOTROPY; SURFACE;
LINE
AB We have used high resolution scanning Hall probe microscopy (SHPM) to study vortex structures in the interacting crossing lattices regime of Bi2Sr2CaCu2O8+delta (BSCCO) single crystals under independently applied H-c and H-parallel to fields. At very low c-axis fields we observe a novel ID vortex chain state where all pancake vortex (PV) stacks become trapped on underlying stacks of Josephson vortices (JVs). In this regime distortions of the JV lattice, induced by varying H-parallel to, enable the indirect manipulation of PVs trapped on them. Preliminary results of experiments are presented in which we have attempted to realise a vortex 'lens' based on this vortex 'pump' principle. The existence of 1D vortex chains also explains many of the features observed in the magnetisation of BSCCO under strongly tilted magnetic fields. Finally we demonstrate how the presence of quenched disorder leads to indirect JV pinning via interactions with weakly pinned PV stacks and show how fragmentation of both PV and JV stacks can occur when stacks of JVs 'decorated' with PVs are forced abruptly through regions of disorder. (C) 2004 Elsevier B.V. All rights reserved.
C1 Univ Bath, Dept Phys, Bath BA2 7AY, Avon, England.
Univ Manchester, Dept Phys & Astron, Manchester M13 9PL, Lancs, England.
Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138627, Japan.
CREST, Japan Sci & Technol Corp, Tokyo, Japan.
RP Bending, SJ (reprint author), Univ Bath, Dept Phys, Bath BA2 7AY, Avon, England.
EM pyssb@bath.ac.uk
RI Tamegai, Tsuyoshi /C-6656-2011; Koshelev, Alexei/K-3971-2013
OI Koshelev, Alexei/0000-0002-1167-5906
NR 16
TC 5
Z9 5
U1 0
U2 4
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0921-4534
J9 PHYSICA C
JI Physica C
PD OCT
PY 2004
VL 412
BP 372
EP 378
DI 10.1016/j.physc.2004.01.058
PN 1
PG 7
WC Physics, Applied
SC Physics
GA 865OC
UT WOS:000224711400080
ER
PT J
AU Arendt, PN
Foltyn, SR
Civale, L
DePaula, RF
Dowden, PC
Groves, JR
Holesinger, TG
Jia, QX
Kreiskott, S
Stan, L
Usov, I
Wang, H
Coulter, JY
AF Arendt, PN
Foltyn, SR
Civale, L
DePaula, RF
Dowden, PC
Groves, JR
Holesinger, TG
Jia, QX
Kreiskott, S
Stan, L
Usov, I
Wang, H
Coulter, JY
TI High critical current YBCO coated conductors based on IBAD MgO
SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
LA English
DT Article; Proceedings Paper
CT 16th International Symposium on Superconductivity (ISS 2003)
CY OCT 27-29, 2003
CL Tsukuba, JAPAN
SP Int Superconduct Technol Ctr
DE YBCO coated conductor; ion-beam assisted deposition; biaxial texture
ID BEAM-ASSISTED DEPOSITION; TEMPLATE LAYERS; FILMS; DIFFUSION; HASTELLOY
AB This report describes recent developments of second-generation Y1Ba2Cu3O7-delta (YBCO) coated conductors deposited on biaxially textured MgO templates. The materials system architecture implemented to achieve high critical currents in YBCO films is described. The average full-width at half maximum (FWHM) in-plane texture obtained for MgO films processed on meter-length tapes is 7degrees, while that for the YBCO films is 3degrees. The best YBCO in-plane values approach 2degrees and the out-of-plane values approach 1degrees. Critical currents (1 cm wide tapes, 75 K, self field) have attained 423 A for 7 cm length and 233 A for 50 cm length tapes. (C) 2004 Elsevier B.V. All rights reserved.
C1 Los Alamos Natl Lab, Superconduct Technol Ctr, Los Alamos, NM 87545 USA.
RP Arendt, PN (reprint author), Los Alamos Natl Lab, Superconduct Technol Ctr, POB 1663,MS K763, Los Alamos, NM 87545 USA.
EM arendt@lanl.gov
RI Jia, Q. X./C-5194-2008; Wang, Haiyan/P-3550-2014
OI Wang, Haiyan/0000-0002-7397-1209
NR 20
TC 47
Z9 48
U1 0
U2 15
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0921-4534
J9 PHYSICA C
JI Physica C
PD OCT
PY 2004
VL 412
BP 795
EP 800
DI 10.1016/j.physc.2003.12.074
PN 2
PG 6
WC Physics, Applied
SC Physics
GA 865OD
UT WOS:000224711500001
ER
PT J
AU Rupich, MW
Zhang, W
Li, X
Kodenkandath, T
Verebelyi, DT
Schoop, U
Thieme, C
Teplitsky, M
Lynch, J
Nguyen, N
Siegal, E
Scudiere, J
Maroni, V
Venkataraman, K
Miller, D
Holesinger, TG
AF Rupich, MW
Zhang, W
Li, X
Kodenkandath, T
Verebelyi, DT
Schoop, U
Thieme, C
Teplitsky, M
Lynch, J
Nguyen, N
Siegal, E
Scudiere, J
Maroni, V
Venkataraman, K
Miller, D
Holesinger, TG
TI Progress on MOD/RABiTS (TM) 2G HTS wire
SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
LA English
DT Article; Proceedings Paper
CT 16th International Symposium on Superconductivity (ISS 2003)
CY OCT 27-29, 2003
CL Tsukuba, JAPAN
SP Int Superconduct Technol Ctr
DE superconducting wires; second generation; YBCO
ID BEAM-ASSISTED DEPOSITION; YBCO-COATED CONDUCTORS; BUFFER LAYERS;
THIN-FILMS; MGO; PERFORMANCE; TAPES; GROWTH
AB The development of the second generation (2G) high temperature superconducting wire has advanced beyond initial laboratory demonstrations and is now focused on developing and testing high critical current conductor designs required for commercial applications. The approach pursued at American Superconductor for 2G wire manufacturing is based on the combination of the RABiTSTI substrate-buffer technology with metal organic deposition (MOD) of the YBCO layer. This MOD/RABiTS(TM) approach has been demonstrated in 10 in lengths with critical currents of up to 184 A/cm-width (similar to2.3 MA/cm(2)) and in short length with critical currents of up to 270 A/cm-width (similar to3.4 MA/cm(2)). In addition to a high critical current, the superconducting wire must also meet stringent mechanical and electrical stability requirements that vary by application. Commercially viable architectures designed to meet these specifications have been fabricated and tested. Wires manufactured by this process have been successfully tested in prototype cable and coil applications. (C) 2004 Elsevier B.V. All rights reserved.
C1 Amer Supercond Corp, Westborough, MA 01581 USA.
Argonne Natl Lab, Argonne, IL 60439 USA.
Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Rupich, MW (reprint author), Amer Supercond Corp, 2 Technol Dr, Westborough, MA 01581 USA.
EM mrupich@amsuper.com
NR 27
TC 57
Z9 60
U1 1
U2 6
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0921-4534
J9 PHYSICA C
JI Physica C
PD OCT
PY 2004
VL 412
BP 877
EP 884
DI 10.1016/j.physc.2004.02.202
PN 2
PG 8
WC Physics, Applied
SC Physics
GA 865OD
UT WOS:000224711500016
ER
PT J
AU Civale, L
Maiorov, B
Serquis, A
Foltyn, SR
Jia, QX
Arendt, PN
Wang, H
Willis, JO
Coulter, JY
Holesinger, TG
MacManus-Driscoll, JL
Rupich, MW
Zhang, W
Li, X
AF Civale, L
Maiorov, B
Serquis, A
Foltyn, SR
Jia, QX
Arendt, PN
Wang, H
Willis, JO
Coulter, JY
Holesinger, TG
MacManus-Driscoll, JL
Rupich, MW
Zhang, W
Li, X
TI Influence of crystalline texture on vortex pinning near the ab-plane in
YBa2Cu3O7 thin films and coated conductors
SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
LA English
DT Article; Proceedings Paper
CT 16th International Symposium on Superconductivity (ISS 2003)
CY OCT 27-29, 2003
CL Tsukuba, JAPAN
SP Int Superconduct Technol Ctr
DE superconductivity; thin films; critical current; coated superconductors
ID CRITICAL-CURRENT-DENSITY; COLUMNAR DEFECTS; CRITICAL CURRENTS;
SUPERCONDUCTORS; DEPENDENCE; ANISOTROPY; THICKNESS; MOTION; SPLAY
AB We present a study of the sharp peak that develops near the ab-plane orientation in the angular dependent critical current of YBa2Cu3O7 (YBCO) films. This peak arises from correlated pinning associated to intrinsic pinning by the layered structure of the YBCO, and from extended planar defects. We measure films produced by pulsed laser deposition (PLD) and metal organic deposition (MOD) on ion beam assisted deposition-MgO, and by PLD on single crystalline substrates. We show that the width and height of the peak increases with the out-of-plane mosaic spread of the films. We discuss the implications of the different structures (columnar and laminar respectively) of the PLD and MOD films. (C) 2004 Elsevier B.V. All rights reserved.
C1 Los Alamos Natl Lab, Superconduct Technol Ctr, Los Alamos, NM 87545 USA.
Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England.
Amer Superconductor, Westborough, MA 01581 USA.
RP Civale, L (reprint author), Los Alamos Natl Lab, Superconduct Technol Ctr, MS K763, Los Alamos, NM 87545 USA.
EM lcivale@lanl.gov
RI Jia, Q. X./C-5194-2008; Wang, Haiyan/P-3550-2014; Serquis,
Adriana/L-6554-2015;
OI Wang, Haiyan/0000-0002-7397-1209; Serquis, Adriana/0000-0003-1499-4782;
Maiorov, Boris/0000-0003-1885-0436
NR 18
TC 54
Z9 54
U1 2
U2 11
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0921-4534
J9 PHYSICA C
JI Physica C
PD OCT
PY 2004
VL 412
BP 976
EP 982
DI 10.1016/j.physc.2003.12.076
PN 2
PG 7
WC Physics, Applied
SC Physics
GA 865OD
UT WOS:000224711500035
ER
PT J
AU Coulter, JY
Willis, JO
Maley, MP
Ullmann, JL
AF Coulter, JY
Willis, JO
Maley, MP
Ullmann, JL
TI Improved critical currents in a Bi-2223/Ag coil using splayed columnar
defects
SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
LA English
DT Article; Proceedings Paper
CT 16th International Symposium on Superconductivity (ISS 2003)
CY OCT 27-29, 2003
CL Tsukuba, JAPAN
SP Int Superconduct Technol Ctr
DE flux pinning; critical currents; Bi-based superconductor; proton
irradiation
ID CRITICAL-CURRENT DENSITIES; 0.8 GEV PROTONS; FISSION TRACKS; TAPES;
IRRADIATION; ENHANCEMENT
AB We have irradiated a double pancake coil of Bi-2223/Ag sheathed tape with high energy protons, which yield splayed columnar defects in the superconductor core of the tape. We report the critical current I-c and current-voltage power law n value as a function of magnetic field at temperatures of 75-64 K for the coil and for a short sample taken from the coil. A novel apparatus using permanent magnets is used to apply a magnetic field in the coil radial direction. Both the coil and short sample show a strong enhancement in I, for magnetic fields along the c axis (tape normal or radial direction for the coil) compared to the performance of unirradiated tape. These results represent the first time a real superconducting device has been irradiated with high energy protons for the purpose of introducing splayed columnar defects to enhance performance. (C) 2004 Elsevier B.V. All rights reserved.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Willis, JO (reprint author), Los Alamos Natl Lab, Mail Stop K763,MST-STC, Los Alamos, NM 87545 USA.
EM jwillis@lanl.gov
NR 10
TC 4
Z9 4
U1 2
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0921-4534
J9 PHYSICA C
JI Physica C
PD OCT
PY 2004
VL 412
BP 1079
EP 1084
DI 10.1016/j.physc.2004.01.115
PN 2
PG 6
WC Physics, Applied
SC Physics
GA 865OD
UT WOS:000224711500053
ER
PT J
AU Bulzacchelli, JF
Lee, HS
Misewich, JA
Ketchen, MB
AF Bulzacchelli, JF
Lee, HS
Misewich, JA
Ketchen, MB
TI Development of superconducting bandpass delta-sigma analog-to-digital
converter
SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
LA English
DT Article; Proceedings Paper
CT 16th International Symposium on Superconductivity (ISS 2003)
CY OCT 27-29, 2003
CL Tsukuba, JAPAN
SP Int Superconduct Technol Ctr
DE analog-to-digital converter (ADC); bandpass delta-sigma modulator;
Josephson junction; superconducting electronics (subject index); niobium
(materials index)
ID RSFQ CIRCUITS
AB This paper recounts the development of a superconducting bandpass delta-sigma (DeltaSigma) modulator for direct analog-to-digital conversion of radio frequency signals in the GHz range. The modulator design benefits from several advantages of superconducting electronics: high-Q resonators, fast Josephson comparators, naturally quantized single flux quantum pulses, and high circuit sensitivity. The measured center frequency (2.23 GHz), sampling rate (up to 45 GHz), dynamic range (greater than 57 dB over a 19.6 MHz bandwidth), and input sensitivity (-17.4 dBm full-scale) of the bandpass modulator are the highest reported to date in any technology. The SNR (49 dB over a 20.8 MHz bandwidth) is limited by the frequency resolution of the measurement but still exceeds the SNRs of semiconductor modulators with comparable center frequencies. The design of the modulator test chip and the high speed testing methodology are reviewed. Finally, the paper examines the prospects for improved performance with more advanced modulator architectures. Published by Elsevier B.V.
C1 IBM Corp, Div Res, TJ Watson Res Ctr, Yorktown Hts, NY 10598 USA.
MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA.
Brookhaven Natl Lab, Dept Mat Sci, Upton, NY 11973 USA.
RP Bulzacchelli, JF (reprint author), IBM Corp, Div Res, TJ Watson Res Ctr, Room 40-103,POB 218, Yorktown Hts, NY 10598 USA.
EM jfbulz@us.ibm.com
NR 17
TC 0
Z9 0
U1 0
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0921-4534
J9 PHYSICA C
JI Physica C
PD OCT
PY 2004
VL 412
BP 1539
EP 1545
DI 10.1016/j.physc.2004.01.156
PN 2
PG 7
WC Physics, Applied
SC Physics
GA 865OD
UT WOS:000224711500143
ER
PT J
AU Bhattacharya, RN
Spagnol, P
Miao, HP
Marken, K
Willis, JO
AF Bhattacharya, RN
Spagnol, P
Miao, HP
Marken, K
Willis, JO
TI Nanoparticle incorporated superconductor Bi-2212 tapes
SO PHYSICA STATUS SOLIDI A-APPLIED RESEARCH
LA English
DT Article
ID FABRICATION; WIRES
AB Nonvacuum dip-coating techniques were used to prepare Bi-2212 tapes on Ag/Ni clad substrates. The Bi-2212 tapes were doped with MgO nanoparticles at varying concentrations to obtain improved flux pinning. The tapes were characterized by X-ray diffraction (XRD), scanning electron micrography (SEM), and transport measurements. We observed a more than 33% improvement of the critical current density J(c) at 4 K, self field, for the tape incorporating MgO nanoparticles. We also observed improved J(c) values for MgO-doped tape at high field-as much as 60% at 3 T for magnetic field angles near the c-axis direction, which indicates enhanced flux pinning by the MgO nanoparticles. (C) 2004 WILEY-VCH Verlag GmbH & Co- KGaA, Weinheim.
C1 Natl Renewable Energy Lab, Golden, CO 80401 USA.
Oxford Instrument, Carteret, NJ 07008 USA.
Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Bhattacharya, RN (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA.
EM raghu_bhattacharya@nrel.gov
NR 8
TC 7
Z9 7
U1 0
U2 4
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY
SN 0031-8965
J9 PHYS STATUS SOLIDI A
JI Phys. Status Solidi A-Appl. Res.
PD OCT
PY 2004
VL 201
IS 13
BP 2880
EP 2885
DI 10.1002/pssa.200406858
PG 6
WC Materials Science, Multidisciplinary; Physics, Applied; Physics,
Condensed Matter
SC Materials Science; Physics
GA 868HR
UT WOS:000224905200006
ER
PT J
AU Lee, SJ
Yu, ACC
Lo, CCH
Fan, M
AF Lee, SJ
Yu, ACC
Lo, CCH
Fan, M
TI Optical properties of monodispersive FePt nanoparticle films
SO PHYSICA STATUS SOLIDI A-APPLIED RESEARCH
LA English
DT Article
ID ARRAYS; COPT
AB The optical properties of monodispersive FePt nanoparticle films were investigated using spectroscopic ellipsometry in the energy range of 1.5 to 5.5 eV. The monodispersive FePt nanoparticle film was stabilized on a Si substrate by means of an organosilane coupling film, resulting in the formation of a (Si/SiO2/APTS/FePt nanoparticles monolayer) structure. Multilayer optical models were employed to study the contribution of the FePt nanoparticles to the measured optical properties of the monodispersive FePt nanoparticle film, and to estimate the optical properties of the FePt nanoparticle layer. (C) 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
C1 Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
Sony Corp, Sendai Technol Ctr, Sendai, Miyagi 9850842, Japan.
Iowa State Univ, Ctr Sustainable Environm Technol, Ames, IA 50011 USA.
RP Lee, SJ (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
EM sjlee@ameslab.gov
NR 15
TC 8
Z9 8
U1 1
U2 4
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY
SN 0031-8965
J9 PHYS STATUS SOLIDI A
JI Phys. Status Solidi A-Appl. Res.
PD OCT
PY 2004
VL 201
IS 13
BP 3031
EP 3036
DI 10.1002/pssa.200406866
PG 6
WC Materials Science, Multidisciplinary; Physics, Applied; Physics,
Condensed Matter
SC Materials Science; Physics
GA 868HR
UT WOS:000224905200025
ER
PT J
AU Chang, SY
Pandharipande, VR
Carlson, J
Schmidt, KE
AF Chang, SY
Pandharipande, VR
Carlson, J
Schmidt, KE
TI Quantum Monte Carlo studies of superfluid Fermi gases
SO PHYSICAL REVIEW A
LA English
DT Article
ID BOSE-EINSTEIN CONDENSATE; HARD-SPHERE; SYSTEMS; ATOMS
AB We report results of quantum Monte Carlo calculations of the ground state of dilute Fermi gases with attractive short-range two-body interactions. The strength of the interaction is varied to study different pairing regimes which are characterized by the product of the s-wave scattering length and the Fermi wave vector, ak(F), We report results for the ground-state energy, the pairing gap Delta, and the quasiparticle spectrum. In the weak-coupling regime, 1/ak(F)<-1, we obtain Bardeen-Cooper-Schrieffer (BCS) superfluid and the energy gap &UDelta; is much smaller than the Fermi gas energy E-FG. When a> 0, the interaction is strong enough to form bound molecules with energy E-mol. For 1/ak(F)greater than or similar to0.5, we find that weakly interacting composite bosons are formed in the superfluid gas with Delta and gas energy per particle approaching E-mol//2. In this region, we seem to have Bose-Einstein condensation (BEC) of molecules. The behavior of the energy and the gap in the BCS-to-BEC transition region, -0.5<1/ak(F)<0.5, is discussed.
C1 Univ Illinois, Dept Phys, Urbana, IL 61801 USA.
Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
Arizona State Univ, Dept Phys & Astron, Tempe, AZ 85287 USA.
RP Chang, SY (reprint author), Univ Illinois, Dept Phys, 1110 W Green St, Urbana, IL 61801 USA.
NR 25
TC 168
Z9 169
U1 0
U2 6
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 4
AR 043602
DI 10.1103/PhysRevA.70.043602
PG 11
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 874AE
UT WOS:000225322500079
ER
PT J
AU Jaecks, DH
Yenen, O
McLaughlin, KW
Canton, S
Bozek, JD
Downsbrough, M
AF Jaecks, DH
Yenen, O
McLaughlin, KW
Canton, S
Bozek, JD
Downsbrough, M
TI Giant spin-orbit interactions in argon photoionization
SO PHYSICAL REVIEW A
LA English
DT Article
AB We have measured the relative cross sections for quartet and doublet satellite states of Ar+ formed in photoionization. Quartet states are dipole forbidden in the nonrelativistic limit and result from spin-orbit interactions in the continuum [H. W. Van der Hart and C. H. Greene, J. Phys. B 32, 4029 (1999)]. Because of this, the cross sections for their formation are generally thought to be smaller than the dipole-allowed doublet states. We find that the cross sections for the 3p(4)[P-3]4p D-4(1/2)o and 3p(4)[P-3]4p D-4(3/2)o quartet states over certain energy regions are 16 to 30 times larger than doublet states. This counterintuitive result remains to be theoretically explained.
C1 Univ Nebraska, Behlen Lab Phys, Lincoln, NE 68588 USA.
Loras Coll, Dept Phys & Engn, Dubuque, IA 52004 USA.
Western Michigan Univ, Dept Phys, Kalamazoo, MI 49008 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
RP Jaecks, DH (reprint author), Univ Nebraska, Behlen Lab Phys, Lincoln, NE 68588 USA.
RI Bozek, John/E-4689-2010; Bozek, John/E-9260-2010; Canton,
Sophie/A-8432-2016
OI Bozek, John/0000-0001-7486-7238;
NR 6
TC 0
Z9 0
U1 0
U2 2
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 4
AR 040703
DI 10.1103/PhysRevA.70.040703
PG 3
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 874AE
UT WOS:000225322500006
ER
PT J
AU Krstic, PS
Macek, JH
Ovchinnikov, SY
Schultz, DR
AF Krstic, PS
Macek, JH
Ovchinnikov, SY
Schultz, DR
TI Analysis of structures in the cross sections for elastic scattering and
spin exchange in low-energy H++H collisions
SO PHYSICAL REVIEW A
LA English
DT Article
ID PROTON COLLISIONS; ATOMS
AB Elastic scattering and spin exchange cross sections in H++H collisions are computed using accurate adiabatic potential curves for the center-of-mass energy range 10(-4) < E < 100 eV. Both cross sections show considerable structure which necessitates computation on a fine energy grid to resolve them. We analyze the structures using a comparison equation method to find the poles of the scattering matrix in the complex energy plane. We show that many features of the cross sections can be correlated with these poles and tabulate the positions of the most important poles. Finding stationary phases in the partial wave cross sections, we also explain in all details the glory oscillations of the elastic cross section that extends below 100 eV down to the lowest energies.
C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
RP Krstic, PS (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
RI Ovchinnikov, Serguei/C-4994-2014
NR 23
TC 26
Z9 26
U1 0
U2 3
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 4
AR 042711
DI 10.1103/PhysRevA.70.042711
PG 10
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 874AE
UT WOS:000225322500055
ER
PT J
AU Somma, R
Ortiz, G
Barnum, H
Knill, E
Viola, L
AF Somma, R
Ortiz, G
Barnum, H
Knill, E
Viola, L
TI Nature and measure of entanglement in quantum phase transitions
SO PHYSICAL REVIEW A
LA English
DT Article
ID MINIMAL UNCERTAINTY; ERROR-CORRECTION; COHERENT STATES; SYSTEMS; MODEL;
PARTICLES; QUBITS
AB Characterizing and quantifying quantum correlations in states of many-particle systems is at the core of a full understanding of phase transitions in matter. In this work, we continue our investigation of the notion of generalized entanglement [Barnum et al., Phys. Rev. A 68, 032308 (2003)] by focusing on a simple Lie-algebraic measure of purity of a quantum state relative to an observable set. For the algebra of local observables on multi-qubit systems, the resulting local purity measure is equivalent to a recently introduced global entanglement measure [Meyer and Wallach, J. Math. Phys. 43, 4273 (2002)]. In the condensed-matter setting, the notion of Lie-algebraic purity is exploited to identify and characterize the quantum phase transitions present in two exactly solvable models, namely the Lipkin-Meshkov-Glick model and the spin-1/2 anisotropic XY model in a transverse magnetic field. For the latter, we argue that a natural fermionic observable set arising after the Jordan-Wigner transformation better characterizes the transition than alternative measures based on qubits. This illustrates the usefulness of going beyond the standard subsystem-based framework while providing a global disorder parameter for this model. Our results show how generalized entanglement leads to useful tools for distinguishing between the ordered and disordered phases in the case of broken symmetry quantum phase transitions. Additional implications and possible extensions of concepts to other systems of interest in condensed-matter physics are also discussed.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Ctr Atom Bariloche, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina.
Inst Balseiro, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina.
RP Somma, R (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM somma@lanl.gov
NR 51
TC 79
Z9 79
U1 0
U2 6
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 OCT
PY 2004
VL 70
IS 4
AR 042311
DI 10.1103/PhysRevA.70.042311
PG 21
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 874AE
UT WOS:000225322500031
ER
PT J
AU Altshuler, E
Johansen, TH
Paltiel, Y
Jin, P
Bassler, KE
Ramos, O
Chen, QY
Reiter, GF
Zeldov, E
Chu, CW
AF Altshuler, E
Johansen, TH
Paltiel, Y
Jin, P
Bassler, KE
Ramos, O
Chen, QY
Reiter, GF
Zeldov, E
Chu, CW
TI Vortex avalanches with robust statistics observed in superconducting
niobium
SO PHYSICAL REVIEW B
LA English
DT Article
ID MAGNETIZATION; FILMS; GROWTH; NOISE
AB By combining micro-Hall probe and magneto-optical imaging techniques we have been able to examine vortex avalanches at different locations of the ridgelike magnetic topography of superconducting niobium samples as the external field is slowly increased. The avalanche size distributions are shown to be power laws for two decades with very similar critical exponents at all locations, thus demonstrating a remarkable robustness in the details of the flux penetration dynamics.
C1 Univ Havana, Superconduct Lab, IMRE Phys Fac, Havana 10400, Cuba.
Univ Houston, Texas Ctr Superconduct, Houston, TX 77204 USA.
Univ Oslo, Dept Phys, N-0316 Oslo, Norway.
Weizmann Inst Sci, Dept Condensed Matter Phys, IL-76100 Rehovot, Israel.
Univ Houston, Dept Phys, Houston, TX 77204 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Hong Kong Univ Sci & Technol, Kowloon, Hong Kong, Peoples R China.
RP Altshuler, E (reprint author), Univ Havana, Superconduct Lab, IMRE Phys Fac, Havana 10400, Cuba.
RI Zeldov, Eli/K-1546-2012
NR 20
TC 31
Z9 31
U1 0
U2 4
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 14
AR 140505
DI 10.1103/PhysRevB.70.140505
PG 4
WC Physics, Condensed Matter
SC Physics
GA 867PX
UT WOS:000224855600013
ER
PT J
AU Baek, SH
Luban, M
Lascialfari, A
Micotti, E
Furukawa, Y
Borsa, F
van Slageren, J
Cornia, A
AF Baek, SH
Luban, M
Lascialfari, A
Micotti, E
Furukawa, Y
Borsa, F
van Slageren, J
Cornia, A
TI Scaling behavior of the proton spin-lattice relaxation rate in
antiferromagnetic molecular rings
SO PHYSICAL REVIEW B
LA English
DT Article
ID NUCLEAR MAGNETIC RELAXATION; ANISOTROPY
AB We present new and refined data for the magnetic field (H) and temperature (T) dependence of the proton spin-lattice relaxation rate (1/T-1) in antiferromagnetic molecular rings as well as a new explicit scaling formula that accurately reproduces our data. The key ingredients of our formulation are (1) a reduced relaxation rate, R(H,T)=(1/T-1)/(Tchi(T)), given by R(H,T)=Aomega(c)(T)/(omega(c)(2)(T)+omega(N)(2)), where chi=(partial derivativeM/partial derivativeH)(T) is the differential susceptibility, A is a fitting constant, and omega(N) is the proton Larmor frequency, and (2) a temperature-dependent correlation frequency omega(c)(T) which at low T is given by omega(c)(T)proportional toT(alpha), that we identify as a lifetime broadening of the energy levels of the exchange-coupled paramagnetic spins due to spin-acoustic phonon coupling. The main consequences are (1) R(H,T) has a local maximum for fixed H and variable T that is proportional to 1/H; the maximum occurs at the temperature T-0(H) for which omega(c)(T)=omega(N); (2) for low T a scaling formula applies, R(H,T)/R(H,T-0(H))=2t(alpha)/(1+t(2alpha)), where tequivalent toT/T-0(H). Both results are confirmed by our experimental data for the choice alpha=3.5+/-0.5.
C1 Iowa State Univ, Dept Phys & Astron, Ames Lab, Ames, IA 50011 USA.
Dipartimento Fis A Volta, I-27100 Pavia, Italy.
INFM, Unita Pavia, I-27100 Pavia, Italy.
Hokkaido Univ, Grad Sch Sci, Div Phys, Sapporo, Hokkaido 0600810, Japan.
Univ Florence, INSTM, I-50019 Sesto Fiorentino, FI, Italy.
Univ Florence, Dipartimento Chim, I-50019 Sesto Fiorentino, FI, Italy.
Univ Modena & Reggio Emilia, UdR INSTM, Ctr SCS, Dipartimento Chim, I-41100 Modena, Italy.
RP Baek, SH (reprint author), Iowa State Univ, Dept Phys & Astron, Ames Lab, Ames, IA 50011 USA.
EM baek@ameslab.gov
RI Baek, Seung-Ho/F-4733-2011; Cornia, Andrea/N-8587-2015
OI Baek, Seung-Ho/0000-0002-0059-8255; Cornia, Andrea/0000-0001-9765-3128
NR 21
TC 44
Z9 44
U1 1
U2 3
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 13
AR 134434
DI 10.1103/PhysRevB.70.134434
PG 5
WC Physics, Condensed Matter
SC Physics
GA 867PR
UT WOS:000224855000085
ER
PT J
AU Blum, V
Zunger, A
AF Blum, V
Zunger, A
TI Mixed-basis cluster expansion for thermodynamics of bcc alloys
SO PHYSICAL REVIEW B
LA English
DT Article
ID TRANSITION-METAL ALLOYS; SHORT-RANGE-ORDER; BRILLOUIN-ZONE INTEGRATIONS;
EFFECTIVE-PAIR INTERACTIONS; TOTAL-ENERGY CALCULATIONS; COHERENT
PHASE-STABILITY; AUGMENTED-WAVE METHOD; ELECTRONIC-STRUCTURE; CU-AU;
STRUCTURAL STABILITY
AB To predict the ground-state structures and finite-temperature properties of an alloy, the total energies of many different atomic configurations sigmaequivalent to{sigma(i);i=1,...,N}, with N sites i occupied by atom A (sigma(i)=-1), or B (sigma(i)=+1), must be calculated accurately and rapidly. Direct local-density approximation (LDA) calculations provide the required accuracy, but are not practical because they are limited to small cells and only a few of the 2(N) possible configurations. The "mixed-basis cluster expansion" (MBCE) method allows to parametrize LDA configurational energetics E-LDA[sigma(i);i=1,...,N] by an analytic functional E-MBCE[sigma(i);i=1,...,N]. We extend the method to bcc alloys, describing how to select N-sigma ordered structures (for which LDA total energies are calculated explicitly) and N-F pair and multibody interactions, which are fit to the N-sigma energies to obtain a deterministic MBCE mapping of LDA. We apply the method to bcc Mo-Ta. This system reveals an unexpectedly rich ground-state line, pitting Mo-rich (100) superlattices against Ta-rich complex structures. Predicted finite-T properties such as order-disorder temperatures, solid-solution short-range order and the random alloy enthalpy of mixing are consistent with experiment.
C1 Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA.
RI Zunger, Alex/A-6733-2013; Blum, Volker/J-6591-2012
OI Blum, Volker/0000-0001-8660-7230
NR 67
TC 67
Z9 67
U1 1
U2 12
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 OCT
PY 2004
VL 70
IS 15
AR 155108
DI 10.1103/PhysRevB.70.155108
PG 17
WC Physics, Condensed Matter
SC Physics
GA 867QA
UT WOS:000224855900028
ER
PT J
AU Califano, M
Zunger, A
AF Califano, M
Zunger, A
TI Anisotropy of interband transitions in InAs quantum wires: An atomistic
theory
SO PHYSICAL REVIEW B
LA English
DT Article
ID OPTICAL MATRIX-ELEMENTS; SEMICONDUCTOR NANOWIRES; POLARIZATION
DEPENDENCE; ELECTRONIC-STRUCTURE; LINEAR-POLARIZATION; EMISSION;
PHOTOLUMINESCENCE; ABSORPTION; DIAMETER; DOTS
AB The electronic and optical properties of [001]-oriented free-standing InAs cylindrical quantum wires (QWRs) with diameters 10-100 Angstrom are calculated using an atomistic, empirical pseudopotential plane-wave method. We analyze the effect of different degrees of mixing between valence bands on the optical properties of these nanostructures, by switching on and off the spin-orbit interaction. The fundamental transition in these QWRs exhibit a large anisotropy, with emission polarized prevalently along the wire axis z. The magnitude of such an anisotropy is found to depend on both degree of valence band mixing and wire size. In higher energy interband transitions, we find anisotropies close to 100% with emission polarized perpendicular to the wire axis. Furthermore, in large wires, transitions involving highly excited valence states show in-plane polarization anisotropies between the [110] and [1 (1) over bar0] directions. InAs wires can therefore switch between z-polarized to xy-polarized emission/absorption for different excitation energies. This makes them ideally suited for application in orientation-sensitive devices.
C1 Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Califano, M (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
RI Zunger, Alex/A-6733-2013
NR 37
TC 23
Z9 23
U1 0
U2 6
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 16
AR 165317
DI 10.1103/PhysRevB.70.165317
PG 11
WC Physics, Condensed Matter
SC Physics
GA 867QB
UT WOS:000224856000066
ER
PT J
AU Capan, C
Bianchi, A
Movshovich, R
Christianson, AD
Malinowski, A
Hundley, MF
Lacerda, A
Pagliuso, PG
Sarrao, JL
AF Capan, C
Bianchi, A
Movshovich, R
Christianson, AD
Malinowski, A
Hundley, MF
Lacerda, A
Pagliuso, PG
Sarrao, JL
TI Anisotropy of thermal conductivity and possible signature of the
Fulde-Ferrell-Larkin-Ovchinnikov state in CeCoIn5
SO PHYSICAL REVIEW B
LA English
DT Article
ID ELECTRON-SPIN DOMAINS; D-WAVE SUPERCONDUCTORS; HEAVY-FERMION; MAGNETIC
ENHANCEMENT; TYPE-2 SUPERCONDUCTORS; PAULI PARAMAGNETISM;
CRITICAL-FIELD; VORTEX STATES; PHASE; NODES
AB We have measured the thermal conductivity of the heavy-fermion superconductor CeCoIn5 in the vicinity of the upper critical field, with the magnetic field perpendicular to the c axis. Thermal conductivity displays a discontinuous jump at the superconducting phase boundary below critical temperature T(0)approximate to1 K, indicating a change from a second- to first-order transition and confirming the recent results of specific heat measurements on CeCoIn5. In addition, the thermal conductivity data as a function of field display a kink at a field H-k below the superconducting critical field, which closely coincides with the recently discovered anomaly in specific heat, tentatively identified with the appearance of the spatially inhomogeneous Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) superconducting state. Our results indicate that the thermal conductivity is enhanced within the FFLO state, and call for further theoretical investigations of the order parameter's real-space structure (and, in particular, the structure of vortices) and of the thermal transport within the inhomogeneous FFLO state.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Natl High Magnet Field Lab, Los Alamos, NM 87545 USA.
UNICAMP, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazil.
RP Capan, C (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
RI Pagliuso, Pascoal/C-9169-2012; Malinowski, Artur/A-2184-2015;
christianson, andrew/A-3277-2016; Bianchi, Andrea/E-9779-2010; Inst. of
Physics, Gleb Wataghin/A-9780-2017
OI Malinowski, Artur/0000-0003-3771-9353; christianson,
andrew/0000-0003-3369-5884; Bianchi, Andrea/0000-0001-9340-6971;
NR 46
TC 85
Z9 86
U1 1
U2 11
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 13
AR 134513
DI 10.1103/PhysRevB.70.134513
PG 7
WC Physics, Condensed Matter
SC Physics
GA 867PR
UT WOS:000224855000098
ER
PT J
AU Cavalleri, A
Dekorsy, T
Chong, HHW
Kieffer, JC
Schoenlein, RW
AF Cavalleri, A
Dekorsy, T
Chong, HHW
Kieffer, JC
Schoenlein, RW
TI Evidence for a structurally-driven insulator-to-metal transition in VO2:
A view from the ultrafast timescale
SO PHYSICAL REVIEW B
LA English
DT Article
ID PHASE-TRANSITION; MOTT-HUBBARD; BAND THEORY; VANADIUM DIOXIDE; PEIERLS;
OXIDES; FEMTOSECOND; EXCITATION; PHONONS; PULSES
AB We apply ultrafast spectroscopy to establish a time-domain hierarchy between structural and electronic effects in a strongly correlated electron system. We discuss the case of the model system VO2, a prototypical nonmagnetic compound that exhibits cell doubling, charge localization, and a metal-insulator transition below 340 K. We initiate the formation of the metallic phase by prompt hole photo-doping into the valence band of the low-T insulator. The insulator-to-metal transition is, however, delayed with respect to hole injection, exhibiting a bottleneck time scale, associated with the phonon connecting the two crystallographic phases. This structural bottleneck is observed despite faster depletion of the d bands and is indicative of important bandlike character for this controversial insulator.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
Rossendorf Inc, Forschungszentrum Rossendorf EV, D-01314 Dresden, Germany.
Univ Quebec, INRS Energie & Mat, Varennes, PQ, Canada.
RP Cavalleri, A (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
EM ACavalleri@lbl.gov
RI Dekorsy, Thomas/A-6152-2008; Schoenlein, Robert/D-1301-2014
OI Dekorsy, Thomas/0000-0003-2257-2854; Schoenlein,
Robert/0000-0002-6066-7566
NR 25
TC 346
Z9 346
U1 18
U2 177
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 16
AR 161102
DI 10.1103/PhysRevB.70.161102
PG 4
WC Physics, Condensed Matter
SC Physics
GA 867QB
UT WOS:000224856000002
ER
PT J
AU Choi, Y
Haskel, D
Camley, RE
Lee, DR
Lang, JC
Srajer, G
Jiang, JS
Bader, SD
AF Choi, Y
Haskel, D
Camley, RE
Lee, DR
Lang, JC
Srajer, G
Jiang, JS
Bader, SD
TI Temperature evolution of the Gd magnetization profile in strongly
coupled Gd/Fe multilayers
SO PHYSICAL REVIEW B
LA English
DT Article
ID X-RAY DICHROISM; CIRCULAR-DICHROISM; INTERFACE ROUGHNESS; RESONANT
SCATTERING; FE/GD MULTILAYERS; PHASE-TRANSITIONS; GIANT
MAGNETORESISTANCE; SURFACE; SUPERLATTICES; EDGES
AB The temperature evolution of the magnetization depth profile in Gd layers of a strongly coupled [Gd(50 Angstrom)/Fe(15 Angstrom)](15) multilayer is studied using x-ray resonant magnetic scattering (XRMS) and x-ray magnetic circular dichroism (XMCD) techniques. XRMS yields a spatially resolved, element-specific, magnetization depth profile, while XMCD spatially averages over this profile. The combined data inequivocally show the presence of an inhomogeneous magnetic profile within the Gd layers at all measured temperatures between 20 and 300 K. These inhomogeneous profiles, which feature enhanced magnetic ordering near the Gd/Fe interface, were refined using both a kinematic Born approximation and a recently developed distorted-wave Born approximation, both of which include the contribution of structural and magnetic interfacial roughness. Calculations of the static magnetic configuration within a mean-field approach that neglects interfacial roughness are in agreement with the measured inhomogeneous profile and its temperature evolution. The results suggest that the enhanced Gd magnetization near the interface arises from its proximity to magnetically ordered Fe.
C1 Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA.
Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
Univ Colorado, Dept Phys, Colorado Springs, CO 80907 USA.
Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Choi, Y (reprint author), Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA.
RI Bader, Samuel/A-2995-2013
NR 62
TC 18
Z9 18
U1 1
U2 6
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 13
AR 134420
DI 10.1103/PhysRevB.70.134420
PG 10
WC Physics, Condensed Matter
SC Physics
GA 867PR
UT WOS:000224855000071
ER
PT J
AU Christianson, AD
Bauer, ED
Lawrence, JM
Riseborough, PS
Moreno, NO
Pagliuso, PG
Sarrao, JL
Thompson, JD
Goremychkin, EA
Trouw, FR
Hehlen, MP
McQueeney, RJ
AF Christianson, AD
Bauer, ED
Lawrence, JM
Riseborough, PS
Moreno, NO
Pagliuso, PG
Sarrao, JL
Thompson, JD
Goremychkin, EA
Trouw, FR
Hehlen, MP
McQueeney, RJ
TI Crystalline electric field effects in CeMIn5 (M=Co,Rh,Ir):
Superconductivity and the influence of Kondo spin fluctuations
SO PHYSICAL REVIEW B
LA English
DT Article
ID HEAVY-FERMION SUPERCONDUCTIVITY; UNCONVENTIONAL SUPERCONDUCTIVITY;
NEUTRON-SCATTERING; CEIRIN5; CERHIN5; CECOIN5; PRESSURE; EXCITATIONS;
CECU2GE2; CECU2SI2
AB We have measured the crystalline electric field (CEF) excitations of the CeMIn5 (M=Co,Rh,Ir) series of heavy fermion superconductors by means of inelastic neutron scattering. In each case, the CEF excitations are considerably broadened, due to Kondo hybridization of the localized f-moments with the conduction electrons. Fits to a phenomenological CEF model reproduce the inelastic neutron scattering spectra and the high-temperature magnetic susceptibility. We also present calculations within the noncrossing approximation (NCA) to the Anderson impurity model, including the effect of CEF level-splitting for the inelastic neutron scattering spectra and the magnetic susceptibility. Our results indicate that the CEF level-splitting in all three materials is similar, and can be thought of as being derived from the cubic parent compound CeIn3 in which an excited state quartet at similar to12 meV is split into two doublets by the lower symmetry of the tetragonal environment of the CeMIn5 materials. The evolution of the superconducting transition temperatures in the different members of CeMIn5 can be understood as a direct consequence of the strength of the 4f-conduction electron hybridization.
C1 Univ Calif Irvine, Irvine, CA 92697 USA.
Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Temple Univ, Philadelphia, PA 19122 USA.
Argonne Natl Lab, Argonne, IL 60439 USA.
Iowa State Univ, Ames, IA 50011 USA.
RP Christianson, AD (reprint author), Univ Calif Irvine, Irvine, CA 92697 USA.
RI Bauer, Eric/D-7212-2011; Riseborough, Peter/D-4689-2011; Pagliuso,
Pascoal/C-9169-2012; Lujan Center, LANL/G-4896-2012; Moreno,
Nelson/H-1708-2012; McQueeney, Robert/A-2864-2016; christianson,
andrew/A-3277-2016
OI Moreno, Nelson/0000-0002-1672-4340; McQueeney,
Robert/0000-0003-0718-5602; christianson, andrew/0000-0003-3369-5884
NR 40
TC 43
Z9 43
U1 1
U2 16
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 13
AR 134505
DI 10.1103/PhysRevB.70.134505
PG 9
WC Physics, Condensed Matter
SC Physics
GA 867PR
UT WOS:000224855000090
ER
PT J
AU Dudiy, SV
Kent, PRC
Zunger, A
AF Dudiy, SV
Kent, PRC
Zunger, A
TI Penetration of electronic perturbations of dilute nitrogen impurities
deep into the conduction band of GaP1-xNx
SO PHYSICAL REVIEW B
LA English
DT Article
ID SEMICONDUCTOR ALLOYS; QUANTUM DOTS; GAP; LOCALIZATION; TRANSITION;
EVOLUTION; STATES; ENERGY; GAASN
AB The electronic structure consequences of the perturbations caused by dilute nitrogen impurities in GaP are studied by means of supercell calculations using a fully atomistic empirical pseudopotential method. We find that numerous localized states are introduced by a single N atom and N clusters, not only close to the band edge but also throughout the GaP conduction band, up to similar to1 eV above the conduction band edge. These localized states suggest an alternative interpretation for a previously puzzling observation of splitting of photoluminescence excitation intensity at the GaP Gamma(1c) energy into two features, one blueshifting and the other staying pinned in energy with increasing N concentration.
C1 Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Dudiy, SV (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
RI Kent, Paul/A-6756-2008; Zunger, Alex/A-6733-2013
OI Kent, Paul/0000-0001-5539-4017;
NR 30
TC 17
Z9 17
U1 0
U2 3
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 16
AR 161304
DI 10.1103/PhysRevB.70.161304
PG 4
WC Physics, Condensed Matter
SC Physics
GA 867QB
UT WOS:000224856000010
ER
PT J
AU Fishman, RS
AF Fishman, RS
TI Spin dynamics of a canted antiferromagnet in a magnetic field
SO PHYSICAL REVIEW B
LA English
DT Article
ID METAL-INSULATOR-TRANSITION; GENERALIZED VILLAIN MODEL;
NEUTRON-DIFFRACTION; PHASE; PR0.7CA0.3MNO3; SCATTERING; SYSTEM
AB The spin dynamics of a canted antiferromagnet with a quadratic spin-wave dispersion near q=0 is shown to possess a unique signature. When the anisotropy gap is negligible, the spin-wave stiffness D-sw(q,B)=(omega(q)-B)/q(2) depends on whether the limit of zero field or zero wave vector is taken first. Consequently, D-sw is a strong funtion of the magnetic field at a fixed wave vector. Even in the presence of a sizable anisotropy gap, the field dependence of the extrapolated q=0 gap energy distinguishes a canted antiferromagnet from a phase-separated mixture containing both ferromagnetic and antiferromagnetic regions.
C1 Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA.
RP Fishman, RS (reprint author), Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA.
RI Fishman, Randy/C-8639-2013
NR 32
TC 0
Z9 0
U1 0
U2 2
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 14
AR 140402
DI 10.1103/PhysRevB.70.140402
PG 4
WC Physics, Condensed Matter
SC Physics
GA 867PX
UT WOS:000224855600003
ER
PT J
AU Gibaud, A
Dourdain, S
Gang, O
Ocko, BM
AF Gibaud, A
Dourdain, S
Gang, O
Ocko, BM
TI In situ grazing incidence small-angle x-ray scattering real-time
monitoring of the role of humidity during the structural formation of
templated silica thin films
SO PHYSICAL REVIEW B
LA English
DT Article
ID MESOPOROUS MOLECULAR-SIEVES; STEADY-STATE; MESOPHASES; MECHANISM
AB The role of RH (relative humidity) during the formation of templated silica thin films has been investigated using real-time grazing incidence small-angle x-ray scattering. A detailed analysis of the evolution of the lattice parameters as a function of RH is presented. It is shown that in the modulable steady state, the lattice parameter parallel to the surface is pinned after a transient regime is reached while the parameter normal to the surface can still vary. In the initial stage we find that the film can take up to one layer of water per micelle. Interferometric measurements confirm that swelling occurs in the entire film. An explanation of the pinning effect is presented.
C1 Univ Maine, Fac Sci, Lab PEC, F-72085 Le Mans 09, France.
Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
RP Gibaud, A (reprint author), Univ Maine, Fac Sci, Lab PEC, F-72085 Le Mans 09, France.
RI Dourdain, Sandrine/C-3765-2016
OI Dourdain, Sandrine/0000-0003-4828-4092
NR 18
TC 27
Z9 27
U1 1
U2 6
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 16
AR 161403
DI 10.1103/PhysRevB.70.161403
PG 4
WC Physics, Condensed Matter
SC Physics
GA 867QB
UT WOS:000224856000024
ER
PT J
AU Gweon, GH
Mo, SK
Allen, JW
He, J
Jin, R
Mandrus, D
Hochst, H
AF Gweon, GH
Mo, SK
Allen, JW
He, J
Jin, R
Mandrus, D
Hochst, H
TI Luttinger liquid angle-resolved photoemission line shapes from samples
of Li0.9Mo6O17 grown by the temperature-gradient-flux technique
SO PHYSICAL REVIEW B
LA English
DT Article
ID PURPLE BRONZE LI0.9MO6O17; ELECTRONIC-STRUCTURE; DIMENSIONAL SYSTEMS;
METAL LI0.9MO6O17
AB Angle-resolved photoemission spectroscopy line shapes measured for quasi-one-dimensional Li0.9Mo6O17 samples grown by a temperature-gradient-flux technique are found to show Luttinger liquid behavior, consistent with all previous data by us and other workers obtained from samples grown by the electrolyte reduction technique. This result eliminates the sample growth method as a possible origin of considerable differences in photoemission data reported in previous studies of Li0.9Mo6O17.
C1 Univ Michigan, Randall Lab Phys, Ann Arbor, MI 48109 USA.
Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA.
Univ Wisconsin, Ctr Synchrotron Radiat, Stoughton, WI 53589 USA.
RP Gweon, GH (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, MS 2-200,1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM gweon@umich.edu
RI Mo, Sung-Kwan/F-3489-2013; Mandrus, David/H-3090-2014
OI Mo, Sung-Kwan/0000-0003-0711-8514;
NR 17
TC 13
Z9 13
U1 1
U2 5
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 15
AR 153103
DI 10.1103/PhysRevB.70.153103
PG 3
WC Physics, Condensed Matter
SC Physics
GA 867QA
UT WOS:000224855900003
ER
PT J
AU Hastings, MB
AF Hastings, MB
TI Spin-orbit scattering and time-reversal symmetry: Detection of a spin by
tunneling
SO PHYSICAL REVIEW B
LA English
DT Article
ID RESONANCE; TRANSPORT; DEVICE
AB We consider the possibility of detecting spin precession in a magnetic field by nonequilibrium transport processes. We find that time-reversal symmetry imposes strong constraints on the problem. Suppose the tunneling occurs directly between systems at two different chemical potentials rather than sequentially via a third system at an intermediate chemical potential. Then, at largest order in voltage, unless spin-polarized electrons are used, the periodic signal in the current results from beating together two different precession frequencies, so that observing a signal near the Larmor frequency in this case requires having some cluster with a g factor close to zero.
C1 Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Hastings, MB (reprint author), Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
EM hastings@cnls.lanl.gov
NR 19
TC 4
Z9 4
U1 0
U2 2
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 16
AR 161301
DI 10.1103/PhysRevB.70.161301
PG 4
WC Physics, Condensed Matter
SC Physics
GA 867QB
UT WOS:000224856000007
ER
PT J
AU Hiraka, H
Boni, P
Yamada, K
Park, S
Lee, SH
Shirane, G
AF Hiraka, H
Boni, P
Yamada, K
Park, S
Lee, SH
Shirane, G
TI Characterization of low-energy magnetic excitations in chromium
SO PHYSICAL REVIEW B
LA English
DT Article
ID SPIN-DENSITY-WAVE; FINCHER-BURKE EXCITATIONS; POLARIZATION DEPENDENCE;
MODES; ANTIFERROMAGNETISM; DYNAMICS; ALLOYS; METAL; CR
AB The low-energy excitations of Cr, i.e., the Fincher-Burke (FB) modes, have been investigated in the transversely polarized spin-density-wave phase by inelastic neutron scattering using a single-Q(+/-) crystal with a propagation vector Q(+/-) parallel to [001]. The constant-momentum-transfer scans show that the energy spectra consist of two components, namely dispersive FB modes and an almost energy-independent cross section. Most remarkably, we find that the spectrum of the FB modes exhibits one peak at 140 K near Q=(0,0,0.98) and two peaks near Q=(0,0,1.02), respectively. This is surprising because Cr crystallizes in a centrosymmetric bcc structure. The asymmetry of those energy spectra decreases with increasing temperature. In addition, the observed magnetic peak intensity is independent of Q, suggesting a transfer of spectral weight between the upper and lower FB modes. The energy-independent cross section is localized only between the incommensurate peaks and develops rapidly with increasing temperature.
C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan.
Tech Univ Munich, Phys Dept E21, D-85747 Garching, Germany.
Natl Inst Stand & Technol, NIST Ctr Neutron Res, Gaithersburg, MD 20899 USA.
Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA.
RP Hiraka, H (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
RI Yamada, Kazuyoshi/C-2728-2009
NR 19
TC 6
Z9 6
U1 0
U2 4
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 14
AR 144413
DI 10.1103/PhysRevB.70.144413
PG 5
WC Physics, Condensed Matter
SC Physics
GA 867PX
UT WOS:000224855600052
ER
PT J
AU Jiang, W
Zhang, Y
Weber, WJ
AF Jiang, W
Zhang, Y
Weber, WJ
TI Temperature dependence of disorder accumulation and amorphization in
Au-ion-irradiated 6H-SiC
SO PHYSICAL REVIEW B
LA English
DT Article
ID SILICON-CARBIDE; IMPLANTATION TEMPERATURE; DAMAGE ACCUMULATION;
SINGLE-CRYSTALS; RECOVERY; SUBLATTICES; CERAMICS; CARBON; FLUX
AB Disorder accumulation and amorphization in 6H-SiC single crystals irradiated with 2.0 MeV Au2+ ions at temperatures ranging from 150 to 550 K have been investigated systematically based on 0.94 MeV D+ channeling analyses along the <0001> axis. Physical models have been applied to fit the experimental data and to interpret the temperature dependence of the disordering processes. Results show that defect-stimulated amorphization in Au2+-irradiated 6H-SiC dominates the disordering processes at temperatures below 500 K, while formation of clusters becomes predominant above 500 K. Two distinctive dynamic recovery stages are observed over the temperature range from 150 to 550 K, resulting from the coupled processes of close-pair recombination and interstitial migration and annihilation on both sublattices. These two stages overlap very well with the previously observed thermal recovery stages. Based on the model fits, the critical temperature for amorphization in 6H-SiC under the Au2+ ion irradiation conditions corresponds to 501+/-10 K.
C1 Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Jiang, W (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99352 USA.
EM weilin.jiang@pnl.gov
RI Weber, William/A-4177-2008;
OI Weber, William/0000-0002-9017-7365; Jiang, Weilin/0000-0001-8302-8313
NR 30
TC 56
Z9 56
U1 0
U2 15
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 16
AR 165208
DI 10.1103/PhysRevB.70.165208
PG 8
WC Physics, Condensed Matter
SC Physics
GA 867QB
UT WOS:000224856000049
ER
PT J
AU Khalifah, P
Ohkubo, I
Christen, HM
Mandrus, DG
AF Khalifah, P
Ohkubo, I
Christen, HM
Mandrus, DG
TI Evolution of transport and magnetic properties near the ferromagnetic
quantum critical point in the series CaxSr1-xRuO3
SO PHYSICAL REVIEW B
LA English
DT Article
ID FERMI-LIQUID BEHAVIOR; THIN-FILMS; TRANSITION; ELECTRON; SYSTEM;
SUPERCONDUCTIVITY; CARUO3
AB A series of epitaxial films were grown across the solid solution CaxSr1-xRuO3 in order to pinpoint the ferromagnetic to paramagnetic quantum phase transition in this system and to study the evolution of transport and magnetic properties in its vicinity. The ferromagnetic T-c of SrRuO3 was found to decrease linearly with Ca doping levels up to 70%. Further doping resulted in the abrupt elimination of ferromagnetic order, and the onset of low temperature (<10 K) non-Fermi-liquid (NFL) resistivity of the form rhoproportional torho(0)+AT(1.5) for samples with xless than or equal to0.75less than or equal to1.0. The resistivity exponent of 1.5 matches that previously observed for intermetallic alloys (such as MnSi) at their ferromagnetic quantum critical points, indicating the possible universality of this NFL behavior. Field-dependent specific heat measurements on bulk samples at compositions near the quantum phase transition provide additional evidence for NFL behavior (C/Tproportional tolog(10) T) and show the conditions under which spin fluctuations contribute to the specific heat.
C1 Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA.
RP Khalifah, P (reprint author), Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA.
RI Christen, Hans/H-6551-2013; Mandrus, David/H-3090-2014; OHKUBO,
Isao/B-9553-2013
OI Christen, Hans/0000-0001-8187-7469; OHKUBO, Isao/0000-0002-4187-0112
NR 22
TC 43
Z9 43
U1 1
U2 18
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 13
AR 134426
DI 10.1103/PhysRevB.70.134426
PG 6
WC Physics, Condensed Matter
SC Physics
GA 867PR
UT WOS:000224855000077
ER
PT J
AU Koschny, T
Schweitzer, L
AF Koschny, T
Schweitzer, L
TI Levitation of the quantum Hall extended states in the B -> 0 limit
SO PHYSICAL REVIEW B
LA English
DT Article
ID METAL-INSULATOR-TRANSITION; MAGNETIC-FIELD; 2 DIMENSIONS; WEAK
LEVITATION; PHASE-DIAGRAM; LANDAU-LEVEL; LOCALIZATION; SYSTEM;
CONDUCTIVITY; UNIVERSALITY
AB We investigate the fate of the quantum Hall extended states within a continuum model with spatially correlated disorder potentials. The model can be projected onto a couple of the lowest Landau bands. Levitation of the n=0 critical states is observed if at least the two lowest Landau bands are considered. The dependence on the magnetic length l(B)=((h) over bar/(eB))(1/2) and on the correlation length of the disorder potential eta is combined into a single dimensionless parameter (η) over cap=eta/l(B). This enables us to study the behavior of the critical states for vanishing magnetic field. In the two Landau band limit, we find a disorder dependent saturation of the critical states' levitation which is in contrast to earlier propositions, but in accord with some experiments.
C1 Phys Tech Bundesanstalt, D-38116 Braunschweig, Germany.
Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
Fdn Res & Technol Hellas, Iraklion 71110, Crete, Greece.
RP Koschny, T (reprint author), Phys Tech Bundesanstalt, Bundesallee 100, D-38116 Braunschweig, Germany.
NR 35
TC 11
Z9 11
U1 0
U2 1
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 16
AR 165301
DI 10.1103/PhysRevB.70.165301
PG 7
WC Physics, Condensed Matter
SC Physics
GA 867QB
UT WOS:000224856000050
ER
PT J
AU Laudernet, Y
Clerouin, J
Mazevet, S
AF Laudernet, Y
Clerouin, J
Mazevet, S
TI Ab initio simulations of the electrical and optical properties of
shock-compressed SiO2
SO PHYSICAL REVIEW B
LA English
DT Article
ID STRONGLY CORRELATED ALUMINUM; AUGMENTED-WAVE METHOD; MOLECULAR-DYNAMICS;
PSEUDOPOTENTIALS; CONDUCTIVITY; EQUATION; METALS; LIQUID
AB We calculate the optical properties of shock-compressed silica up to a pressure of 1200 GPa using ab initio molecular-dynamics simulations. The calculations show a significant rise in conductivity and reflectivity as both the pressure and temperature increase. This smooth increase in reflectivity up to a pressure of 500 GPa as well as the saturation value of about 35% given by the simulations are in near perfect agreement with recent shock compression measurements. The constituency analysis performed suggests that this increase in both conductivity and reflectivity can be attributed to the dissociation of molecular systems in the fluid.
C1 CEA DAM Ile France, Dept Phys Theor & Appl, F-91680 Bruyeres Le Chatel, France.
Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Laudernet, Y (reprint author), CEA DAM Ile France, Dept Phys Theor & Appl, Boite Postale 12, F-91680 Bruyeres Le Chatel, France.
EM yann.laudernet@cea.fr
RI Clerouin, jean/D-8528-2015
OI Clerouin, jean/0000-0003-2144-2759
NR 28
TC 45
Z9 46
U1 1
U2 8
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 16
AR 165108
DI 10.1103/PhysRevB.70.165108
PG 5
WC Physics, Condensed Matter
SC Physics
GA 867QB
UT WOS:000224856000033
ER
PT J
AU Lyo, SK
AF Lyo, SK
TI Anomalous thermopower of a quasi-two-dimensional low-density metallic
hole gas
SO PHYSICAL REVIEW B
LA English
DT Article
ID INTERFACE-ROUGHNESS SCATTERING; SILICON INVERSION-LAYERS;
TWO-DIMENSIONAL SYSTEMS; TEMPERATURE-DEPENDENCE; INSULATOR-TRANSITION;
IMPURITY-SCATTERING; SCALING THEORY; ELECTRON-GAS; V COMPOUNDS;
SI-MOSFET
AB We study the thermopower S and the resistance R of a low-density quasi-two-dimensional hole gas in the metallic regime at low temperatures (T's). Long-range interface-roughness fluctuations are found to explain the sign anomaly and the sign reversal of the recently observed T-dependent S. Two mechanisms showing similar S(R) can yield very different R(S), indicating that S and R play a complementary role toward understanding the transport mechanism.
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
Korea Adv Inst Sci & Technol, Taejon 305701, South Korea.
RP Lyo, SK (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
NR 30
TC 4
Z9 4
U1 1
U2 2
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 15
AR 153301
DI 10.1103/PhysRevB.70.153301
PG 4
WC Physics, Condensed Matter
SC Physics
GA 867QA
UT WOS:000224855900008
ER
PT J
AU Majer, G
Telfah, A
Grinberg, F
Barnes, RG
AF Majer, G
Telfah, A
Grinberg, F
Barnes, RG
TI Unusual doublet structure in proton magnetic-resonance spectra of
yttrium and lutetium trihydrides
SO PHYSICAL REVIEW B
LA English
DT Article
ID NEUTRON-POWDER-DIFFRACTION; HYDROGEN DIFFUSION; METAL-HYDRIDES; NMR;
SYSTEM; MOTION
AB The proton magnetic resonance spectra of yttrium and lutetium trihydride, YH3 and LuH3, respectively, show an unusual doublet structure qualitatively similar to the Pake doublet that results from the mutual dipolar interaction of closely spaced, isolated proton pairs. However, both the magnitude of the splittings, roughly 70 kHz, and the second moment of the spectra, roughly 200 (Oe)(2), greatly exceed classical dipolar theoretical expectations based on known nearest-neighbor spacings. On the other hand, the YH3 doublet narrows to a single line above 300 K, consistent with the temperature dependence of the spin-lattice relaxation rate, whereas the LuH3 doublet shows no narrowing up to 454 K. In addition, the peaks themselves are close to Lorentzian in shape, indicative of strong indirect exchange narrowing. These features of the spectra indicate that substantial contributions from electron-mediated pseudodipolar and indirect exchange interactions exceed the classical dipolar interaction.
C1 Max Planck Inst Met Res, D-70569 Stuttgart, Germany.
Iowa State Univ Sci & Technol, Ames Lab, US DOE, Dept Phys, Ames, IA 50011 USA.
RP Majer, G (reprint author), Max Planck Inst Met Res, Heisenbergstr 3, D-70569 Stuttgart, Germany.
EM majer@nmr.mpi-stuttgart.mpg.de
NR 27
TC 4
Z9 4
U1 2
U2 15
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 13
AR 134111
DI 10.1103/PhysRevB.70.134111
PG 6
WC Physics, Condensed Matter
SC Physics
GA 867PR
UT WOS:000224855000039
ER
PT J
AU Marchetti, FM
Simons, BD
Littlewood, PB
AF Marchetti, FM
Simons, BD
Littlewood, PB
TI Condensation of cavity polaritons in a disordered environment
SO PHYSICAL REVIEW B
LA English
DT Article
ID EXCITON BOSE CONDENSATION; ELECTRON-HOLE GAS; SEMICONDUCTOR MICROCAVITY;
MAGNETIC-IMPURITIES; GROUND-STATE; SUPERCONDUCTORS; FIELD;
PHOTOLUMINESCENCE; FLUCTUATIONS; TEMPERATURE
AB A model for direct two band excitons in a disordered quantum well coupled to light in a cavity is investigated. In the limit in which the exciton density is high, we assess the impact of weak "pair-breaking" disorder on the feasibility of condensation of cavity polaritons. The mean-field phase diagram shows a "lower density" region, where the condensate is dominated by electronic excitations and where disorder tends to close the condensate and quench coherence. Increasing the density of excitations in the system, partially due to the screening of Coulomb interaction, the excitations contributing to the condensate become mainly photonlike and coherence is re-established for any value of disorder. In contrast, in the photon dominated region of the phase diagram, the energy gap of the quasiparticle spectrum still closes when the disorder strength is increased. Above mean-field, thermal, quantum, and fluctuations induced by disorder are considered and the spectrum of the collective excitations is evaluated. In particular, it is shown that the angle resolved photon intensity exhibits an abrupt change in its behavior, going from the condensed to the noncondensed region.
C1 Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England.
LANL, Natl High Magnet Field Lab, Pulsed Field Facil, Los Alamos, NM 87545 USA.
RP Univ Cambridge, Cavendish Lab, Madingley Rd, Cambridge CB3 0HE, England.
RI Cavendish, TCM/C-9489-2009; Littlewood, Peter/B-7746-2008; Marchetti,
Francesca Maria/F-7695-2012;
OI Marchetti, Francesca Maria/0000-0003-1394-7394; Simons,
Benjamin/0000-0002-3875-7071
NR 49
TC 24
Z9 24
U1 2
U2 6
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 OCT
PY 2004
VL 70
IS 15
AR 155327
DI 10.1103/PhysRevB.70.155327
PG 16
WC Physics, Condensed Matter
SC Physics
GA 867QA
UT WOS:000224855900069
ER
PT J
AU Matranga, C
Chen, L
Bockrath, B
Johnson, JK
AF Matranga, C
Chen, L
Bockrath, B
Johnson, JK
TI Displacement of CO2 by Xe in single-walled carbon nanotube bundles
SO PHYSICAL REVIEW B
LA English
DT Article
ID ADSORPTION; SPECTROSCOPY; C-60
AB The displacement of CO2 by Xe on single-walled nanotube bundles is investigated with Fourier transform infrared spectroscopy (FTIR) and grand canonical Monte Carlo (GCMC) simulations. The FTIR experiments show that CO2 physisorption at 77 K produces an infrared peak at 2330 cm(-1) for endohedral physisorption and at 2340 cm(-1) for groove/external surface physisorption. Exposure to Xe causes a sequential displacement of CO2 from these sites as shown by an intensity loss of the 2330 cm(-1) peak, which precedes the loss at 2340 cm(-1). The GCMC simulations on heterogeneous and homogenous bundles show that CO2 in endohedral sites is initially displaced by Xe before that in groove/external surface sites. The CO2 populations in each site of the bundle are taken from the GCMC simulations and used to model the variation of the FTIR intensities as a function of Xe pressure. The qualitative agreement between the simulated and experimental intensity changes is good, suggesting that the intensity changes seen in the experiments are related to CO2 displacement from the sites indicated in the simulations.
C1 US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
Univ Pittsburgh, Dept Chem & Petr Engn, Pittsburgh, PA 15261 USA.
RP Matranga, C (reprint author), US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
EM matranga@netl.doe.gov
RI Chen, Liang/B-3418-2008; Matranga, Christopher/E-4741-2015; Johnson,
Karl/E-9733-2013
OI Matranga, Christopher/0000-0001-7082-5938; Johnson,
Karl/0000-0002-3608-8003
NR 23
TC 24
Z9 24
U1 0
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 OCT
PY 2004
VL 70
IS 16
AR 165416
DI 10.1103/PhysRevB.70.165416
PG 7
WC Physics, Condensed Matter
SC Physics
GA 867QB
UT WOS:000224856000090
ER
PT J
AU Painter, GS
Becher, PF
Shelton, WA
Satet, RL
Hoffmann, MJ
AF Painter, GS
Becher, PF
Shelton, WA
Satet, RL
Hoffmann, MJ
TI First-principles study of rare-earth effects on grain growth and
microstructure in beta-Si3N4 ceramics
SO PHYSICAL REVIEW B
LA English
DT Article
ID SILICON-NITRIDE CERAMICS; IMPROVED FRACTURE-TOUGHNESS; OXYNITRIDE
GLASSES; ADDITIVES; DESIGN; SIO2
AB Rare earth (RE) and group III oxide additions are frequently used to optimize densification during the processing of ceramics. Silicon nitride ceramics frequently serve as model cases, and in these systems the effects of rare earths are important. Additions often determine the morphology of beta-Si3N4 crystallites that grow in the multiphase ceramic, thereby affecting the microstructure and mechanical toughness of the ceramic. The influence of different rare earths has recently been experimentally characterized in terms of their effects on grain growth aspect ratios. In the study reported here, a new energy parameter is introduced that provides a first-principles based understanding of these effects. Grain growth aspect ratios measured for various RE additions in silicon nitride correlate well with corresponding differential binding energies (DBE) calculated within the partial wave self-consistent field atomic cluster model. The DBE provides a second-difference measure of relative site stabilities of RE vs Si atoms in regions of variable O/N content. The physical mechanism that underlies anisotropic grain growth is found to originate from the site competition between REs and Si for bonding at beta-Si3N4 interfaces and within the O-rich glass. The different segregation strengths exhibited by rare earth elements in oxynitride glasses are simply a reflection of their different local chemistries in O, N environments. Elements that segregate to the prism planes of the embedded beta-Si3N4 grains impede the attachment of Si-based silicon nitride growth units, and the extent of this limitation leads to the observed grain growth anisotropy.
C1 Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA.
Oak Ridge Natl Lab, Computat Sci Div, Oak Ridge, TN 37831 USA.
Univ Karlsruhe, Inst Keram, Maschinenbau Zent Lab, D-76131 Karlsruhe, Germany.
RP Painter, GS (reprint author), Oak Ridge Natl Lab, Div Met & Ceram, POB 2008, Oak Ridge, TN 37831 USA.
EM gsp@ornl.gov
NR 17
TC 39
Z9 39
U1 1
U2 23
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 14
AR 144108
DI 10.1103/PhysRevB.70.144108
PG 4
WC Physics, Condensed Matter
SC Physics
GA 867PX
UT WOS:000224855600026
ER
PT J
AU Pecharsky, AO
Gschneidner, KA
Pecharsky, VK
Schlagel, DL
Lograsso, TA
AF Pecharsky, AO
Gschneidner, KA
Pecharsky, VK
Schlagel, DL
Lograsso, TA
TI Phase relationships and structural, magnetic, and thermodynamic
properties of alloys in the pseudobinary Er5Si4-Er5Ge4 system
SO PHYSICAL REVIEW B
LA English
DT Article
ID HEAT-CAPACITY; GD-5(SI2GE2); SILICON; GD-5(SIXGE1-X)(4); TRANSITION;
GERMANIUM; DIAGRAM
AB The room temperature crystal structures of Er5SixGe4-x alloys change systematically with the concentration of Ge from the orthorhombic Gd5Si4-type when x=4, to the monoclinic Gd5Si2Ge2 type when 3.5less than or equal toxless than or equal to3.9 and to the orthorhombic Sm5Ge4 type for xless than or equal to3. The Curie-Weiss behavior of Er5SixGe4-x materials is consistent with the Er3+ state. The compounds order magnetically below 30 K, apparently adopting complex noncollinear magnetic structures with magnetization not reaching saturation in 50 kOe magnetic fields. In Er5Si4, the structural-only transformation from the monoclinic Gd5Si2Ge2-type to the orthorhombic Gd5Si4-type phase occurs around 218 K on heating. Intriguingly, the temperature of this polymorphic transformation is weakly dependent on magnetic fields as low as 40 kOe (dT/dH=-0.058 K/kOe) when the material is in the paramagnetic state nearly 200 K above its spontaneous magnetic ordering temperature. It appears that a magnetostructural transition may be induced in the 5:4 erbium silicide at similar to18 K and above by 75 kOe and higher magnetic fields. Only Er5Si4 but none of the other studied Er5SixGe4-x alloys exhibit magnetic field induced transformations, which are quite common in the closely related Gd5SixGe4-x system. The magnetocaloric effects of the Er5SixGe4-x alloys are moderate.
C1 Iowa State Univ, US DOE, Ames Lab, Mat & Engn Phys Program, Ames, IA 50011 USA.
Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA.
RP Pecharsky, AO (reprint author), Iowa State Univ, US DOE, Ames Lab, Mat & Engn Phys Program, Ames, IA 50011 USA.
EM vitkp@ameslab.gov
NR 47
TC 38
Z9 39
U1 0
U2 8
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 14
AR 144419
DI 10.1103/PhysRevB.70.144419
PG 11
WC Physics, Condensed Matter
SC Physics
GA 867PX
UT WOS:000224855600058
ER
PT J
AU Piryatinski, A
Tretiak, S
Fenimore, PW
Saxena, A
Martin, RL
Bishop, AR
AF Piryatinski, A
Tretiak, S
Fenimore, PW
Saxena, A
Martin, RL
Bishop, AR
TI Three-pulse photon-echo spectroscopy as a probe of the photoexcited
electronic state manifold in coupled electron-phonon systems
SO PHYSICAL REVIEW B
LA English
DT Article
ID BREATHERS; MYOGLOBIN; COMPLEXES; DYNAMICS; MODEL; HEME
AB We demonstrate that a three-pulse photon-echo technique is capable of eliminating the effect of the absorption band broadening associated with intrinsic electron-phonon coupling, and revealing its structure determined by the optical transitions between the ground and excited electronic states dressed with vibrational quanta. This is important for the spectroscopic probing of photoexcited dynamics in low-dimensional materials with strong electron-phonon coupling. As a minimal model for our calculations, we use a two-electron, two-site Holstein Hamiltonian accounting for the vibrational degree of freedom fully quantum mechanically.
C1 Los Alamos Natl Lab, Div Theoret, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
RP Los Alamos Natl Lab, Div Theoret, Ctr Nonlinear Studies, MS B258, Los Alamos, NM 87545 USA.
EM apiryat@lanl.gov
RI Piryatinski, Andrei/B-5543-2009; Tretiak, Sergei/B-5556-2009
OI Tretiak, Sergei/0000-0001-5547-3647
NR 22
TC 2
Z9 2
U1 1
U2 1
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 OCT
PY 2004
VL 70
IS 16
AR 161404
DI 10.1103/PhysRevB.70.161404
PG 4
WC Physics, Condensed Matter
SC Physics
GA 867QB
UT WOS:000224856000025
ER
PT J
AU Rydh, A
Welp, U
Koshelev, AE
Kwok, WK
Crabtree, GW
Brusetti, R
Lyard, L
Klein, T
Marcenat, C
Kang, B
Kim, KH
Kim, KHP
Lee, HS
Lee, SI
AF Rydh, A
Welp, U
Koshelev, AE
Kwok, WK
Crabtree, GW
Brusetti, R
Lyard, L
Klein, T
Marcenat, C
Kang, B
Kim, KH
Kim, KHP
Lee, HS
Lee, SI
TI Two-band effects in the angular dependence of H(c)2 of MgB2 single
crystals
SO PHYSICAL REVIEW B
LA English
DT Article
ID UPPER CRITICAL-FIELD; SUPERCONDUCTING PROPERTIES; STATE PROPERTIES;
ANISOTROPY; MODEL; HEAT
AB The angular dependence of the upper critical field H-c2 of MgB2 single crystals is studied at various temperatures by means of specific-heat and transport measurements in magnetic fields up to 17 T. Clear deviations from Ginzburg-Landau behavior are observed at all temperatures and are explained by two-band effects. The angular dependence and temperature dependence of the deviations are in qualitative agreement with theoretical predictions based on band-structure calculations. Quantitative agreement is obtained with an interband coupling slightly stronger than the calculated one, enabling band-structure anisotropies and interband coupling strength to be experimentally estimated. This provides a pathway to the study of disorder and doping effects in MgB2.
C1 Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
CNRS, Etud Proprietes Elect Solides Lab, F-38042 Grenoble, France.
CEA Grenoble, SPSMS, Dept Rech Fondamentale Mat Condensee, F-38054 Grenoble, France.
Pohang Univ Sci & Technol, Dept Phys, Pohang 790784, South Korea.
Pohang Univ Sci & Technol, NCRICS, Pohang 790784, South Korea.
RP Rydh, A (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM rydh@anl.gov
RI Koshelev, Alexei/K-3971-2013; Rydh, Andreas/A-7068-2012
OI Koshelev, Alexei/0000-0002-1167-5906; Rydh, Andreas/0000-0001-6641-4861
NR 51
TC 42
Z9 42
U1 1
U2 10
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 OCT
PY 2004
VL 70
IS 13
AR 132503
DI 10.1103/PhysRevB.70.132503
PG 4
WC Physics, Condensed Matter
SC Physics
GA 867PR
UT WOS:000224855000026
ER
PT J
AU Soderlind, P
Landa, A
Sadigh, B
Vitos, L
Ruban, A
AF Soderlind, P
Landa, A
Sadigh, B
Vitos, L
Ruban, A
TI First-principles elastic constants and phonons of delta-Pu
SO PHYSICAL REVIEW B
LA English
DT Article
ID AUGMENTED-WAVE METHOD; BRILLOUIN-ZONE; SPECIAL POINTS; AB-INITIO;
PHASE-STABILITY; PLUTONIUM; PSEUDOPOTENTIALS; APPROXIMATION; ALLOYS;
PRESSURES
AB Elastic constants and zone-boundary phonons of delta-plutonium have been calculated within the density-functional theory. The paramagnetic state of delta-Pu is modeled by disordered magnetism utilizing either the disordered local moment or the special quasirandom structure techniques. The anomalously soft C(') as well as a large anisotropy ratio (C(44)/C(')) of delta-Pu is reproduced by this theoretical model. Also the recently measured phonons for delta-Pu compare relatively well with their theoretical counterpart at the zone boundaries.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Royal Inst Technol, Dept Mat Sci & Engn, SE-10044 Stockholm, Sweden.
Res Inst Solid State Phys & Opt, H-1525 Budapest, Hungary.
Royal Inst Technol, Dept Mat Sci & Engn, SE-10044 Stockholm, Sweden.
Tech Univ Denmark, Ctr Atom Scale Mat Phys, Dept Phys, DK-2800 Lyngby, Denmark.
RP Soderlind, P (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94550 USA.
RI Ruban, Andrei/B-7457-2012
NR 46
TC 24
Z9 25
U1 1
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 OCT
PY 2004
VL 70
IS 14
AR 144103
DI 10.1103/PhysRevB.70.144103
PG 5
WC Physics, Condensed Matter
SC Physics
GA 867PX
UT WOS:000224855600021
ER
PT J
AU Tsvelik, AM
AF Tsvelik, AM
TI Confinement and deconfinement of spinons in a frustrated spin-1/2
Heisenberg model
SO PHYSICAL REVIEW B
LA English
DT Article
AB In this publication I discuss the phase diagram of a frustrated spin-1/2 Heisenberg model suggested in Nersesyan and Tsvelik, Phys. Rev. B 67, 024422 (2003). The phase diagram contains (pi,0) and (pi,pi) antiferromagnetic phases separated by the Valence Bond Crystal (VBC) state. I argue that the point of the phase diagram with deconfined spinons, predicted in the aforementioned work, is situated in the middle of VBC state, at the point where the dimerization order parameter changes sign.
C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
RP Tsvelik, AM (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
NR 18
TC 12
Z9 12
U1 1
U2 1
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 13
AR 134412
DI 10.1103/PhysRevB.70.134412
PG 5
WC Physics, Condensed Matter
SC Physics
GA 867PR
UT WOS:000224855000063
ER
PT J
AU Urbano, RR
Pagliuso, PG
Rettori, C
Oseroff, SB
Sarrao, JL
Schlottmann, P
Fisk, Z
AF Urbano, RR
Pagliuso, PG
Rettori, C
Oseroff, SB
Sarrao, JL
Schlottmann, P
Fisk, Z
TI Magnetic polaron and Fermi surface effects in the spin-flip scattering
of EuB6
SO PHYSICAL REVIEW B
LA English
DT Article
ID COLOSSAL MAGNETORESISTANCE; RESONANCE ABSORPTION; ELECTRONIC-STRUCTURE;
FERROMAGNETIC EUB6; DOUBLE EXCHANGE; DEPENDENCE; TRANSITION; TRANSPORT;
METALS; FIELD
AB The spin-flip scattering (SFS) between conduction and 4f(7) Eu2+ (S-8(7/2)) electrons in the paramagnetic phase of EuB6 (Tgreater than or equal to2T(c)similar or equal to30 K) is studied by means of electron spin resonance (ESR) at three frequencies. The single Dysonian resonance observed in all cases suggests a metallic environment for the Eu2+ ions. The ESR at high field, Hsimilar or equal to12.05 kG (nusimilar or equal to33.9 GHz), has an anisotropic linewidth with cubic symmetry. The low-field, 1.46 kG (4.1 Ghz) and 3.35 kG (9.5 GHz), ESR linewidths are unexpectedly broader and have a smaller anisotropy than at the higher field. The unconventional narrowing and anisotropy of the linewidth at higher fields are indicative of a homogeneous resonance and microscopic evidence for a strong reduction in spin-flip scattering between the spins of Eu2+ and the states in the electron and hole pockets at the X points of the Brillouin zone by magnetic polarons.
C1 UNICAMP, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazil.
San Diego State Univ, San Diego, CA 92182 USA.
Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA.
RP Urbano, RR (reprint author), UNICAMP, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazil.
RI Rettori, Carlos/C-3966-2012; Pagliuso, Pascoal/C-9169-2012; Urbano,
Ricardo/F-5017-2012; Schlottmann, Pedro/G-1579-2013; Inst. of Physics,
Gleb Wataghin/A-9780-2017
OI Rettori, Carlos/0000-0001-6692-7915;
NR 31
TC 17
Z9 17
U1 0
U2 3
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 14
AR 140401
DI 10.1103/PhysRevB.70.140401
PG 4
WC Physics, Condensed Matter
SC Physics
GA 867PX
UT WOS:000224855600002
ER
PT J
AU Yakovkin, IN
Gutowski, M
AF Yakovkin, IN
Gutowski, M
TI SrTiO3/Si(001) epitaxial interface: A density functional theory study
SO PHYSICAL REVIEW B
LA English
DT Article
ID SCANNING-TUNNELING-MICROSCOPY; GENERALIZED GRADIENT APPROXIMATION;
TOTAL-ENERGY CALCULATIONS; SI(100) SURFACE; SI(001) SURFACE; AB-INITIO;
STRONTIUM-TITANATE; SRTIO3(100) SURFACE; MOLECULAR-DYNAMICS;
SCHOTTKY-BARRIER
AB The Sr and SrO monolayers on Si(001) and the SrTiO3/Si(001) interface have been simulated by means of total energy minimization within the density functional theory formalism and the generalized gradient approximation form of exchange-correlation potential. It has been found that the first SrO layer restores a 1x1 structure of the substrate thus providing a template for subsequent epitaxy of the SrTiO3 layers. The calculated densities of states are in good agreement with recent x-ray and ultraviolet photoemission valence band spectra. The role of the "buffer layer" in forming the electronic structure is discussed and illustrated with an example of SrO monolayer at the SrTiO3/Si(001) interface.
C1 Pacific NW Natl Lab, Div Chem Sci, Richland, WA 99352 USA.
Natl Acad Sci Ukraine, Inst Phys, UA-03028 Kiev, Ukraine.
Univ Gdansk, Dept Chem, PL-80952 Gdansk, Poland.
RP Pacific NW Natl Lab, Div Chem Sci, Richland, WA 99352 USA.
EM maciej.gutowski@pnl.gov
NR 65
TC 24
Z9 25
U1 0
U2 2
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 OCT
PY 2004
VL 70
IS 16
AR 165319
DI 10.1103/PhysRevB.70.165319
PG 7
WC Physics, Condensed Matter
SC Physics
GA 867QB
UT WOS:000224856000068
ER
PT J
AU Zhou, CG
Berciu, M
AF Zhou, CG
Berciu, M
TI Longitudinal conductance of mesoscopic Hall samples with arbitrary
disorder and periodic modulations
SO PHYSICAL REVIEW B
LA English
DT Article
ID MODE QUANTUM WIRES; MAGNETIC-FIELDS; ENERGY-SPECTRUM; SCALING THEORY;
ELECTRONS; CONDUCTIVITY; LOCALIZATION; POTENTIALS; RESISTANCE; LATTICES
AB We use the Kubo-Landauer formalism to compute the longitudinal (two-terminal) conductance of a two-dimensional electron system placed in a strong perpendicular magnetic field and subjected to periodic modulations and/or disorder potentials. The scattering problem is recast as a set of inhomogeneous, coupled linear equations, allowing us to find the transmission probabilities from a finite-size system computation. The results we present are exact for noninteracting electrons within a spin-polarized lowest Landau level: the effects of the disorder and the periodic modulation are fully accounted for. When necessary, Landau level mixing can also be incorporated straightforwardly into the same formalism. In particular, we focus on the interplay between the effects of the periodic modulation and those of the disorder, when the later is dominant. This appears to be the relevant regime to understand recent experiments [S. Melinte , Phys. Rev. Lett. 92, 036802 (2004)], and our numerical results are in qualitative agreement with these experimental results. The numerical techniques we develop can be generalized straightforwardly to many-terminal geometries, as well as other multichannel scattering problems.
C1 Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA.
Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada.
RP Zhou, CG (reprint author), Oak Ridge Natl Lab, POB 2008,MS6164, Oak Ridge, TN 37831 USA.
RI Berciu, Mona/O-4889-2014
NR 38
TC 3
Z9 3
U1 0
U2 1
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 16
AR 165318
DI 10.1103/PhysRevB.70.165318
PG 12
WC Physics, Condensed Matter
SC Physics
GA 867QB
UT WOS:000224856000067
ER
PT J
AU Zimmers, A
Lobo, RPSM
Bontemps, N
Homes, CC
Barr, MC
Dagan, Y
Greene, RL
AF Zimmers, A
Lobo, RPSM
Bontemps, N
Homes, CC
Barr, MC
Dagan, Y
Greene, RL
TI Infrared signature of the superconducting state in Pr2-xCexCuO4
SO PHYSICAL REVIEW B
LA English
DT Article
ID T-C SUPERCONDUCTORS; SUM-RULE; CONDUCTIVITY; ENERGY; PSEUDOGAP; CUPRATE;
WEIGHT; FILMS
AB We measured the far infrared reflectivity of two superconducting Pr2-xCexCuO4 films above and below T-c. The reflectivity in the superconducting state increases and the optical conductivity drops at low energies, in agreement with the opening of a (possibly) anisotropic superconducting gap. The maximum energy of the gap scales roughly with T-c as 2Delta(max)/k(B)T(c)approximate to4.7. We determined absolute values of the penetration depth at 5 K as lambda(ab)=(3300+/-700) Angstrom for x=0.15 and lambda(ab)=(2000+/-300) Angstrom for x=0.17. A spectral weight analysis shows that the Ferrell-Glover-Tinkham sum rule is satisfied at conventional low energy scales similar to4Delta(max).
C1 Ecole Super Phys & Chim Ind Ville Paris, Lab Phys Solide, CNRS, UPR 5, F-75231 Paris, France.
Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
Univ Maryland, Dept Phys, Ctr Superconduct Res, College Pk, MD 20742 USA.
RP Zimmers, A (reprint author), Ecole Super Phys & Chim Ind Ville Paris, Lab Phys Solide, CNRS, UPR 5, 10 Rue Vauquelin, F-75231 Paris, France.
EM lobo@espci.fr
RI DAGAN, YORAM/E-7240-2011;
OI DAGAN, YORAM/0000-0003-4715-0324; Lobo, Ricardo/0000-0003-2355-6856
NR 32
TC 21
Z9 21
U1 0
U2 2
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 13
AR 132502
DI 10.1103/PhysRevB.70.132502
PG 4
WC Physics, Condensed Matter
SC Physics
GA 867PR
UT WOS:000224855000025
ER
PT J
AU Adams, J
Adler, C
Aggarwal, MM
Ahammed, Z
Amonett, J
Anderson, BD
Anderson, M
Arkhipkin, D
Averichev, GS
Badyal, SK
Balewski, J
Barannikova, O
Barnby, LS
Baudot, J
Bekele, S
Belaga, VV
Bellwied, R
Berger, J
Bezverkhny, BI
Bhardwaj, S
Bhaskar, P
Bhati, AK
Bichsel, H
Billmeier, A
Bland, LC
Blyth, CO
Bonner, BE
Botje, M
Boucham, A
Brandin, A
Bravar, A
Cadman, RV
Cai, XZ
Caines, H
Sanchez, MCD
Cardenas, A
Carroll, J
Castillo, J
Castro, M
Cebra, D
Chaloupka, P
Chattopadhyay, S
Chen, HF
Chen, Y
Chernenko, SP
Cherney, M
Chikanian, A
Choi, B
Christie, W
Coffin, JP
Cormier, TM
Cramer, JG
Crawford, HJ
Das, D
Das, S
Derevschikov, AA
Didenko, L
Dietel, T
Dong, X
Draper, JE
Du, F
Dubey, AK
Dunin, VB
Dunlop, JC
Mazumdar, MRD
Eckardt, V
Efimov, LG
Emelianov, V
Engelage, J
Eppley, G
Erazmus, B
Fachini, P
Faine, V
Faivre, J
Fatemi, R
Filimonov, K
Filip, P
Finch, E
Fisyak, Y
Flierl, D
Foley, KJ
Fu, J
Gagliardi, CA
Ganti, MS
Gutierrez, TD
Gagunashvili, N
Gans, J
Gaudichet, L
Germain, M
Geurts, F
Ghazikhanian, V
Ghosh, P
Gonzalez, JE
Grachov, O
Grigoriev, V
Grosnick, D
Guedon, M
Guertin, SM
Gupta, A
Gushin, E
Hallman, TJ
Hardtke, D
Harris, JW
Heinz, M
Henry, TW
Heppelmann, S
Herston, T
Hippolyte, B
Hirsch, A
Hjort, E
Hoffmann, GW
Horsley, M
Huang, HZ
Huang, SL
Humanic, TJ
Igo, G
Ishihara, A
Jacobs, P
Jacobs, WW
Janik, M
Johnson, I
Jones, PG
Judd, EG
Kabana, S
Kaneta, M
Kaplan, M
Keane, D
Kiryluk, J
Kisiel, A
Klay, J
Klein, SR
Klyachko, A
Koetke, DD
Kollegger, T
Konstantinov, AS
Kopytine, M
Kotchenda, L
Kovalenko, AD
Kramer, M
Kravtsov, P
Krueger, K
Kuhn, C
Kulikov, AI
Kumar, A
Kunde, GJ
Kunz, CL
Kutuev, RK
Kuznetsov, AA
Lamont, MAC
Landgraf, JM
Lange, S
Lansdell, CP
Lasiuk, B
Laue, F
Lauret, J
Lebedev, A
Lednicky, R
Leontiev, VM
LeVine, MJ
Li, C
Li, Q
Lindenbaum, SJ
Lisa, MA
Liu, F
Liu, L
Liu, Z
Liu, QJ
Ljubicic, T
Llope, WJ
Long, H
Longacre, RS
Lopez-Noriega, M
Love, WA
Ludlam, T
Lynn, D
Ma, J
Ma, YG
Magestro, D
Mahajan, S
Mangotra, LK
Mahapatra, AP
Majka, R
Manweiler, R
Margetis, S
Markert, C
Martin, L
Marx, J
Matis, HS
Matulenko, YA
McShane, TS
Meissner, F
Melnick, Y
Meschanin, A
Messer, M
Miller, ML
Milosevich, Z
Minaev, NG
Mironov, C
Mishra, D
Mitchell, J
Mohanty, B
Molnar, L
Moore, CF
Mora-Corral, MJ
Morozov, V
de Moura, MM
Munhoz, MG
Nandi, BK
Nayak, SK
Nayak, TK
Nelson, JM
Nevski, P
Nikitin, VA
Nogach, LV
Norman, B
Nurushev, SB
Odyniec, G
Ogawa, A
Okorokov, V
Oldenburg, M
Olson, D
Paic, G
Pandey, SU
Pal, S
Panebratsev, Y
Panitkin, SY
Pavlinov, AI
Pawlak, T
Perevoztchikov, V
Peryt, W
Petrov, VA
Phatak, SC
Picha, R
Pluta, J
Porile, N
Porter, J
Poskanzer, AM
Potekhin, M
Potrebenikova, E
Potukuchi, BVKS
Prindle, D
Pruneau, C
Putschke, J
Rai, G
Rakness, G
Raniwala, R
Raniwala, S
Ravel, O
Ray, RL
Razin, SV
Reichhold, D
Reid, JG
Renault, G
Retiere, F
Ridiger, A
Ritter, HG
Roberts, JB
Rogachevski, OV
Romero, JL
Rose, A
Roy, C
Ruan, LJ
Rykov, V
Sahoo, R
Sakrejda, I
Salur, S
Sandweiss, J
Savin, I
Schambach, J
Scharenberg, RP
Schmitz, N
Schroeder, LS
Schweda, K
Seger, J
Seliverstov, D
Seyboth, P
Shahaliev, E
Shao, M
Sharma, M
Shestermanov, KE
Shimanskii, SS
Singaraju, RN
Simon, F
Skoro, G
Smirnov, N
Snellings, R
Sood, G
Sorensen, P
Sowinski, J
Spinka, HM
Srivastava, B
Stanislaus, S
Stephenson, EJ
Stock, R
Stolpovsky, A
Strikhanov, M
Stringfellow, B
Struck, C
Suaide, AAP
Sugarbaker, E
Suire, C
Sumbera, M
Surrow, B
Symons, TJM
de Toledo, AS
Szarwas, P
Tai, A
Takahashi, J
Tang, AH
Sorensen, P
Thein, D
Thomas, JH
Tikhomirov, V
Tokarev, M
Tonjes, MB
Trainor, TA
Trentalange, S
Tribble, RE
Trivedi, MD
Trofimov, V
Tsai, O
Ullrich, T
Underwood, DG
Van Buren, G
Vander Molen, AM
Vasiliev, AN
Vasiliev, M
Vigdor, SE
Viyogi, YP
Voloshin, SA
Wang, F
Wang, G
Wang, XL
Wang, ZM
Ward, H
Watson, JW
Wells, R
Westfall, GD
Whitten, C
Wieman, H
Willson, R
Wissink, SW
Witt, R
Wood, J
Wu, J
Xu, N
Xu, Z
Xu, ZZ
Yakutin, AE
Yamamoto, E
Yang, J
Yepes, P
Yurevich, VI
Zanevski, YV
Zborovsky, I
Zhang, H
Zhang, HY
Zhang, WM
Zhang, ZP
Zolnierczuk, PA
Zoulkarneev, R
Zoulkarneeva, J
Zubarev, AN
AF Adams, J
Adler, C
Aggarwal, MM
Ahammed, Z
Amonett, J
Anderson, BD
Anderson, M
Arkhipkin, D
Averichev, GS
Badyal, SK
Balewski, J
Barannikova, O
Barnby, LS
Baudot, J
Bekele, S
Belaga, VV
Bellwied, R
Berger, J
Bezverkhny, BI
Bhardwaj, S
Bhaskar, P
Bhati, AK
Bichsel, H
Billmeier, A
Bland, LC
Blyth, CO
Bonner, BE
Botje, M
Boucham, A
Brandin, A
Bravar, A
Cadman, RV
Cai, XZ
Caines, H
Sanchez, MCD
Cardenas, A
Carroll, J
Castillo, J
Castro, M
Cebra, D
Chaloupka, P
Chattopadhyay, S
Chen, HF
Chen, Y
Chernenko, SP
Cherney, M
Chikanian, A
Choi, B
Christie, W
Coffin, JP
Cormier, TM
Cramer, JG
Crawford, HJ
Das, D
Das, S
Derevschikov, AA
Didenko, L
Dietel, T
Dong, X
Draper, JE
Du, F
Dubey, AK
Dunin, VB
Dunlop, JC
Mazumdar, MRD
Eckardt, V
Efimov, LG
Emelianov, V
Engelage, J
Eppley, G
Erazmus, B
Fachini, P
Faine, V
Faivre, J
Fatemi, R
Filimonov, K
Filip, P
Finch, E
Fisyak, Y
Flierl, D
Foley, KJ
Fu, J
Gagliardi, CA
Ganti, MS
Gutierrez, TD
Gagunashvili, N
Gans, J
Gaudichet, L
Germain, M
Geurts, F
Ghazikhanian, V
Ghosh, P
Gonzalez, JE
Grachov, O
Grigoriev, V
Grosnick, D
Guedon, M
Guertin, SM
Gupta, A
Gushin, E
Hallman, TJ
Hardtke, D
Harris, JW
Heinz, M
Henry, TW
Heppelmann, S
Herston, T
Hippolyte, B
Hirsch, A
Hjort, E
Hoffmann, GW
Horsley, M
Huang, HZ
Huang, SL
Humanic, TJ
Igo, G
Ishihara, A
Jacobs, P
Jacobs, WW
Janik, M
Johnson, I
Jones, PG
Judd, EG
Kabana, S
Kaneta, M
Kaplan, M
Keane, D
Kiryluk, J
Kisiel, A
Klay, J
Klein, SR
Klyachko, A
Koetke, DD
Kollegger, T
Konstantinov, AS
Kopytine, M
Kotchenda, L
Kovalenko, AD
Kramer, M
Kravtsov, P
Krueger, K
Kuhn, C
Kulikov, AI
Kumar, A
Kunde, GJ
Kunz, CL
Kutuev, RK
Kuznetsov, AA
Lamont, MAC
Landgraf, JM
Lange, S
Lansdell, CP
Lasiuk, B
Laue, F
Lauret, J
Lebedev, A
Lednicky, R
Leontiev, VM
LeVine, MJ
Li, C
Li, Q
Lindenbaum, SJ
Lisa, MA
Liu, F
Liu, L
Liu, Z
Liu, QJ
Ljubicic, T
Llope, WJ
Long, H
Longacre, RS
Lopez-Noriega, M
Love, WA
Ludlam, T
Lynn, D
Ma, J
Ma, YG
Magestro, D
Mahajan, S
Mangotra, LK
Mahapatra, AP
Majka, R
Manweiler, R
Margetis, S
Markert, C
Martin, L
Marx, J
Matis, HS
Matulenko, YA
McShane, TS
Meissner, F
Melnick, Y
Meschanin, A
Messer, M
Miller, ML
Milosevich, Z
Minaev, NG
Mironov, C
Mishra, D
Mitchell, J
Mohanty, B
Molnar, L
Moore, CF
Mora-Corral, MJ
Morozov, V
de Moura, MM
Munhoz, MG
Nandi, BK
Nayak, SK
Nayak, TK
Nelson, JM
Nevski, P
Nikitin, VA
Nogach, LV
Norman, B
Nurushev, SB
Odyniec, G
Ogawa, A
Okorokov, V
Oldenburg, M
Olson, D
Paic, G
Pandey, SU
Pal, S
Panebratsev, Y
Panitkin, SY
Pavlinov, AI
Pawlak, T
Perevoztchikov, V
Peryt, W
Petrov, VA
Phatak, SC
Picha, R
Pluta, J
Porile, N
Porter, J
Poskanzer, AM
Potekhin, M
Potrebenikova, E
Potukuchi, BVKS
Prindle, D
Pruneau, C
Putschke, J
Rai, G
Rakness, G
Raniwala, R
Raniwala, S
Ravel, O
Ray, RL
Razin, SV
Reichhold, D
Reid, JG
Renault, G
Retiere, F
Ridiger, A
Ritter, HG
Roberts, JB
Rogachevski, OV
Romero, JL
Rose, A
Roy, C
Ruan, LJ
Rykov, V
Sahoo, R
Sakrejda, I
Salur, S
Sandweiss, J
Savin, I
Schambach, J
Scharenberg, RP
Schmitz, N
Schroeder, LS
Schweda, K
Seger, J
Seliverstov, D
Seyboth, P
Shahaliev, E
Shao, M
Sharma, M
Shestermanov, KE
Shimanskii, SS
Singaraju, RN
Simon, F
Skoro, G
Smirnov, N
Snellings, R
Sood, G
Sorensen, P
Sowinski, J
Spinka, HM
Srivastava, B
Stanislaus, S
Stephenson, EJ
Stock, R
Stolpovsky, A
Strikhanov, M
Stringfellow, B
Struck, C
Suaide, AAP
Sugarbaker, E
Suire, C
Sumbera, M
Surrow, B
Symons, TJM
de Toledo, AS
Szarwas, P
Tai, A
Takahashi, J
Tang, AH
Sorensen, P
Thein, D
Thomas, JH
Tikhomirov, V
Tokarev, M
Tonjes, MB
Trainor, TA
Trentalange, S
Tribble, RE
Trivedi, MD
Trofimov, V
Tsai, O
Ullrich, T
Underwood, DG
Van Buren, G
Vander Molen, AM
Vasiliev, AN
Vasiliev, M
Vigdor, SE
Viyogi, YP
Voloshin, SA
Wang, F
Wang, G
Wang, XL
Wang, ZM
Ward, H
Watson, JW
Wells, R
Westfall, GD
Whitten, C
Wieman, H
Willson, R
Wissink, SW
Witt, R
Wood, J
Wu, J
Xu, N
Xu, Z
Xu, ZZ
Yakutin, AE
Yamamoto, E
Yang, J
Yepes, P
Yurevich, VI
Zanevski, YV
Zborovsky, I
Zhang, H
Zhang, HY
Zhang, WM
Zhang, ZP
Zolnierczuk, PA
Zoulkarneev, R
Zoulkarneeva, J
Zubarev, AN
CA STAR Collaboration
TI Rapidity and centrality dependence of proton and antiproton production
from Au-197+Au-197 collisions at root S-NN=130 GeV
SO PHYSICAL REVIEW C
LA English
DT Article
ID HEAVY-ION COLLISIONS; NUCLEUS-NUCLEUS COLLISIONS; AU+AU COLLISIONS; STAR
TPC; ROOT-S(NN)=130 GEV; ELLIPTIC FLOW; AU COLLISIONS; DISTRIBUTIONS;
RATIO
AB We report on the rapidity and centrality dependence of proton and antiproton transverse mass distributions from Au-197+Au-197 collisions at roots(NN)=130 GeV as measured by the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). Our results are from the rapidity and transverse momentum range of parallel toyparallel to<0.5 and 0.35
p(T)(cut), and studied the results in the framework of participant and binary scaling. No clear evidence is observed for participant scaling of charged hadron yield in the measured p(T) region. The relative importance of hard scattering processes is investigated through binary scaling fraction of particle production.
C1 Univ Birmingham, Birmingham, W Midlands, England.
Argonne Natl Lab, Argonne, IL 60439 USA.
Brookhaven Natl Lab, Upton, NY 11973 USA.
CALTECH, Pasadena, CA 91125 USA.
Univ Calif Berkeley, Berkeley, CA 94720 USA.
Univ Calif Davis, Davis, CA 95616 USA.
Univ Calif Los Angeles, Los Angeles, CA 90095 USA.
Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
Creighton Univ, Omaha, NE 68178 USA.
AS CR, Inst Nucl Phys, Prague, Czech Republic.
JINR, Lab High Energy, Dubna, Russia.
JINR, Particle Phys Lab, Dubna, Russia.
Goethe Univ Frankfurt, D-6000 Frankfurt, Germany.
Inst Phys, Bhubaneswar 751005, Orissa, India.
Indian Inst Technol, Bombay 400076, Maharashtra, India.
Indiana Univ, Bloomington, IN 47408 USA.
Inst Rech Subatom, Strasbourg, France.
Univ Jammu, Jammu 180001, India.
Kent State Univ, Kent, OH 44242 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
MIT, Cambridge, MA 02139 USA.
Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany.
Michigan State Univ, E Lansing, MI 48824 USA.
Moscow Engn Phys Inst, Moscow 115409, Russia.
CUNY City Coll, New York, NY 10031 USA.
NIKHEF, Amsterdam, Netherlands.
Ohio State Univ, Columbus, OH 43210 USA.
Panjab Univ, Chandigarh 160014, India.
Penn State Univ, University Pk, PA 16802 USA.
Inst High Energy Phys, Protvino, Russia.
Purdue Univ, W Lafayette, IN 47907 USA.
Univ Rajasthan, Jaipur 302004, Rajasthan, India.
Rice Univ, Houston, TX 77251 USA.
Univ Sao Paulo, Sao Paulo, Brazil.
Univ Sci & Technol China, Anhui 230027, Peoples R China.
Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
SUBATECH, Nantes, France.
Texas A&M Univ, College Stn, TX 77843 USA.
Univ Texas, Austin, TX 78712 USA.
Tsinghua Univ, Beijing 100084, Peoples R China.
Valparaiso Univ, Valparaiso, IN 46383 USA.
Variable Energy Cyclotron Ctr, Kolkata 700064, W Bengal, India.
Warsaw Univ Technol, Warsaw, Poland.
Univ Washington, Seattle, WA 98195 USA.
Wayne State Univ, Detroit, MI 48201 USA.
HZNU, Inst Particle Phys, CCNU, Wuhan 430079, Peoples R China.
Yale Univ, New Haven, CT 06520 USA.
Univ Zagreb, HR-10002 Zagreb, Croatia.
RP Adams, J (reprint author), Univ Birmingham, Birmingham, W Midlands, England.
RI Skoro, Goran/F-3642-2010; Chen, Yu/E-3788-2012; Barnby, Lee/G-2135-2010;
Mischke, Andre/D-3614-2011; Planinic, Mirko/E-8085-2012; Peitzmann,
Thomas/K-2206-2012; Witt, Richard/H-3560-2012; Castillo Castellanos,
Javier/G-8915-2013; Lednicky, Richard/K-4164-2013; Sumbera,
Michal/O-7497-2014; Skoro, Goran/P-1229-2014; Strikhanov,
Mikhail/P-7393-2014; Takahashi, Jun/B-2946-2012; Kisiel,
Adam/O-8754-2015; Chaloupka, Petr/E-5965-2012; Suaide,
Alexandre/L-6239-2016; Okorokov, Vitaly/C-4800-2017; Ma,
Yu-Gang/M-8122-2013
OI Barnby, Lee/0000-0001-7357-9904; Peitzmann, Thomas/0000-0002-7116-899X;
Castillo Castellanos, Javier/0000-0002-5187-2779; Sumbera,
Michal/0000-0002-0639-7323; Skoro, Goran/0000-0001-7745-9045;
Strikhanov, Mikhail/0000-0003-2586-0405; Takahashi,
Jun/0000-0002-4091-1779; Kisiel, Adam/0000-0001-8322-9510; Suaide,
Alexandre/0000-0003-2847-6556; Okorokov, Vitaly/0000-0002-7162-5345; Ma,
Yu-Gang/0000-0002-0233-9900
NR 49
TC 9
Z9 9
U1 0
U2 5
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
EI 1089-490X
J9 PHYS REV C
JI Phys. Rev. C
PD OCT
PY 2004
VL 70
IS 4
AR 044901
DI 10.1103/PhysRevC.70.044901
PG 11
WC Physics, Nuclear
SC Physics
GA 870FN
UT WOS:000225043100053
ER
PT J
AU Adams, J
Adler, C
Aggarwal, MM
Ahammed, Z
Amonett, J
Anderson, BD
Anderson, M
Arkhipkin, D
Averichev, GS
Badyal, SK
Balewski, J
Barannikova, O
Barnby, LS
Baudot, J
Bekele, S
Belaga, VV
Bellwied, R
Berger, J
Bezverkhny, BI
Bhardwaj, S
Bhaskar, P
Bhati, AK
Bichsel, H
Billmeier, A
Bland, LC
Blyth, CO
Bonner, BE
Botje, M
Boucham, A
Brandin, A
Bravar, A
Cadman, RV
Cai, XZ
Caines, H
Sanchez, MCD
Carroll, J
Castillo, J
Castro, M
Cebra, D
Chaloupka, P
Chattopadhyay, S
Chen, HF
Chen, Y
Chernenko, SP
Cherney, M
Chikanian, A
Choi, B
Christie, W
Coffin, JP
Cormier, TM
Cramer, JG
Crawford, HJ
Das, D
Das, S
Derevschikov, AA
Didenko, L
Dietel, T
Dong, X
Draper, JE
Du, F
Dubey, AK
Dunin, VB
Dunlop, JC
Majumdar, MRD
Eckardt, V
Efimov, LG
Emelianov, V
Engelage, J
Eppley, G
Erazmus, B
Estienne, M
Fachini, P
Faine, V
Faivre, J
Fatemi, R
Filimonov, K
Filip, P
Finch, E
Fisyak, Y
Flierl, D
Foley, KJ
Fu, J
Gagliardi, CA
Ganti, MS
Gutierrez, TD
Gagunashvili, N
Gans, J
Gaudichet, L
Germain, M
Geurts, F
Ghazikhanian, V
Ghosh, P
Gonzalez, JE
Grachov, O
Grigoriev, V
Gronstal, S
Grosnick, D
Guedon, M
Guertin, SM
Gupta, A
Gushin, E
Hallman, TJ
Hardtke, D
Harris, JW
Heinz, M
Henry, TW
Heppelmann, S
Herston, T
Hippolyte, B
Hirsch, A
Hjort, E
Hoffmann, GW
Horsley, M
Huang, HZ
Huang, SL
Humanic, TJ
Igo, G
Ishihara, A
Jacobs, P
Jacobs, WW
Janik, M
Johnson, I
Jones, PG
Judd, EG
Kabana, S
Kaneta, M
Kaplan, M
Keane, D
Kiryluk, J
Kisiel, A
Klay, J
Klein, SR
Klyachko, A
Koetke, DD
Kollegger, T
Konstantinov, AS
Kopytine, M
Kotchenda, L
Kovalenko, AD
Kramer, M
Kravtsov, P
Krueger, K
Kuhn, C
Kulikov, AI
Kumar, A
Kunde, GJ
Kunz, CL
Kutuev, RK
Kuznetsov, AA
Lamont, MAC
Landgraf, JM
Lange, S
Lansdell, CP
Lasiuk, B
Laue, F
Lauret, J
Lebedev, A
Lednicky, R
Leontiev, VM
LeVine, MJ
Li, C
Li, Q
Lindenbaum, SJ
Lisa, MA
Liu, F
Liu, L
Liu, Z
Liu, QJ
Ljubicic, T
Llope, WJ
Long, H
Longacre, RS
Lopez-Noriega, M
Love, WA
Ludlam, T
Lynn, D
Ma, J
Ma, YG
Magestro, D
Mahajan, S
Mangotra, LK
Mahapatra, DP
Majka, R
Manweiler, R
Margetis, S
Markert, C
Martin, L
Marx, J
Matis, HS
Matulenko, YA
McShane, TS
Meissner, F
Melnick, Y
Meschanin, A
Messer, M
Miller, ML
Milosevich, Z
Minaev, NG
Mironov, C
Mishra, D
Mitchell, J
Mohanty, B
Molnar, L
Moore, CF
Mora-Corral, MJ
Morozov, V
de Moura, MM
Munhoz, MG
Nandi, BK
Nayak, SK
Nayak, TK
Nelson, JM
Nevski, P
Nikitin, VA
Nogach, LV
Norman, B
Nurushev, SB
Odyniec, G
Ogawa, A
Okorokov, V
Oldenburg, M
Olson, D
Paic, G
Pandey, SU
Pal, SK
Panebratsev, Y
Panitkin, SY
Pavlinov, AI
Pawlak, T
Perevoztchikov, V
Peryt, W
Petrov, VA
Phatak, SC
Picha, R
Planinic, M
Pluta, J
Porile, N
Porter, J
Poskanzer, AM
Potekhin, M
Potrebenikova, E
Potukuchi, BVKS
Prindle, D
Pruneau, C
Putschke, J
Rai, G
Rakness, G
Raniwala, R
Raniwala, S
Ravel, O
Ray, RL
Razin, SV
Reichhold, D
Reid, JG
Renault, G
Retiere, F
Ridiger, A
Ritter, HG
Roberts, JB
Rogachevski, OV
Romero, JL
Rose, A
Roy, C
Ruan, LJ
Sahoo, R
Sakrejda, I
Salur, S
Sandweiss, J
Savin, I
Schambach, J
Scharenberg, RP
Schmitz, N
Schroeder, LS
Schweda, K
Seger, J
Seliverstov, D
Seyboth, P
Shahaliev, E
Shao, M
Sharma, M
Shestermanov, KE
Shimanskii, SS
Singaraju, RN
Simon, F
Skoro, G
Smirnov, N
Snellings, R
Sood, G
Sorensen, P
Sowinski, J
Spinka, HM
Srivastava, B
Stanislaus, S
Stock, R
Stolpovsky, A
Strikhanov, M
Stringfellow, B
Struck, C
Suaide, AAP
Sugarbaker, E
Suire, C
Sumbera, M
Surrow, B
Symons, TJM
de Toledo, AS
Szarwas, P
Tai, A
Takahashi, J
Tang, AH
Thein, D
Thomas, JH
Tikhomirov, V
Tokarev, M
Tonjes, MB
Trainor, TA
Trentalange, S
Tribble, RE
Trivedi, MD
Trofimov, V
Tsai, O
Ullrich, T
Underwood, DG
Van Buren, G
VanderMolen, AM
Vasiliev, AN
Vasiliev, M
Vigdor, SE
Viyogi, YP
Voloshin, SA
Waggoner, W
Wang, F
Wang, G
Wang, XL
Wang, ZM
Ward, H
Watson, JW
Wells, R
Westfall, GD
Whitten, C
Wieman, H
Willson, R
Wissink, SW
Witt, R
Wood, J
Wu, J
Xu, N
Xu, Z
Xu, ZZ
Yakutin, AE
Yamamoto, E
Yang, J
Yepes, P
Yurevich, VI
Zanevski, YV
Zborovsky, I
Zhang, H
Zhang, HY
Zhang, WM
Zhang, ZP
Zolnierczuk, PA
Zoulkarneev, R
Zoulkarneeva, J
Zubarev, AN
AF Adams, J
Adler, C
Aggarwal, MM
Ahammed, Z
Amonett, J
Anderson, BD
Anderson, M
Arkhipkin, D
Averichev, GS
Badyal, SK
Balewski, J
Barannikova, O
Barnby, LS
Baudot, J
Bekele, S
Belaga, VV
Bellwied, R
Berger, J
Bezverkhny, BI
Bhardwaj, S
Bhaskar, P
Bhati, AK
Bichsel, H
Billmeier, A
Bland, LC
Blyth, CO
Bonner, BE
Botje, M
Boucham, A
Brandin, A
Bravar, A
Cadman, RV
Cai, XZ
Caines, H
Sanchez, MCD
Carroll, J
Castillo, J
Castro, M
Cebra, D
Chaloupka, P
Chattopadhyay, S
Chen, HF
Chen, Y
Chernenko, SP
Cherney, M
Chikanian, A
Choi, B
Christie, W
Coffin, JP
Cormier, TM
Cramer, JG
Crawford, HJ
Das, D
Das, S
Derevschikov, AA
Didenko, L
Dietel, T
Dong, X
Draper, JE
Du, F
Dubey, AK
Dunin, VB
Dunlop, JC
Majumdar, MRD
Eckardt, V
Efimov, LG
Emelianov, V
Engelage, J
Eppley, G
Erazmus, B
Estienne, M
Fachini, P
Faine, V
Faivre, J
Fatemi, R
Filimonov, K
Filip, P
Finch, E
Fisyak, Y
Flierl, D
Foley, KJ
Fu, J
Gagliardi, CA
Ganti, MS
Gutierrez, TD
Gagunashvili, N
Gans, J
Gaudichet, L
Germain, M
Geurts, F
Ghazikhanian, V
Ghosh, P
Gonzalez, JE
Grachov, O
Grigoriev, V
Gronstal, S
Grosnick, D
Guedon, M
Guertin, SM
Gupta, A
Gushin, E
Hallman, TJ
Hardtke, D
Harris, JW
Heinz, M
Henry, TW
Heppelmann, S
Herston, T
Hippolyte, B
Hirsch, A
Hjort, E
Hoffmann, GW
Horsley, M
Huang, HZ
Huang, SL
Humanic, TJ
Igo, G
Ishihara, A
Jacobs, P
Jacobs, WW
Janik, M
Johnson, I
Jones, PG
Judd, EG
Kabana, S
Kaneta, M
Kaplan, M
Keane, D
Kiryluk, J
Kisiel, A
Klay, J
Klein, SR
Klyachko, A
Koetke, DD
Kollegger, T
Konstantinov, AS
Kopytine, M
Kotchenda, L
Kovalenko, AD
Kramer, M
Kravtsov, P
Krueger, K
Kuhn, C
Kulikov, AI
Kumar, A
Kunde, GJ
Kunz, CL
Kutuev, RK
Kuznetsov, AA
Lamont, MAC
Landgraf, JM
Lange, S
Lansdell, CP
Lasiuk, B
Laue, F
Lauret, J
Lebedev, A
Lednicky, R
Leontiev, VM
LeVine, MJ
Li, C
Li, Q
Lindenbaum, SJ
Lisa, MA
Liu, F
Liu, L
Liu, Z
Liu, QJ
Ljubicic, T
Llope, WJ
Long, H
Longacre, RS
Lopez-Noriega, M
Love, WA
Ludlam, T
Lynn, D
Ma, J
Ma, YG
Magestro, D
Mahajan, S
Mangotra, LK
Mahapatra, DP
Majka, R
Manweiler, R
Margetis, S
Markert, C
Martin, L
Marx, J
Matis, HS
Matulenko, YA
McShane, TS
Meissner, F
Melnick, Y
Meschanin, A
Messer, M
Miller, ML
Milosevich, Z
Minaev, NG
Mironov, C
Mishra, D
Mitchell, J
Mohanty, B
Molnar, L
Moore, CF
Mora-Corral, MJ
Morozov, V
de Moura, MM
Munhoz, MG
Nandi, BK
Nayak, SK
Nayak, TK
Nelson, JM
Nevski, P
Nikitin, VA
Nogach, LV
Norman, B
Nurushev, SB
Odyniec, G
Ogawa, A
Okorokov, V
Oldenburg, M
Olson, D
Paic, G
Pandey, SU
Pal, SK
Panebratsev, Y
Panitkin, SY
Pavlinov, AI
Pawlak, T
Perevoztchikov, V
Peryt, W
Petrov, VA
Phatak, SC
Picha, R
Planinic, M
Pluta, J
Porile, N
Porter, J
Poskanzer, AM
Potekhin, M
Potrebenikova, E
Potukuchi, BVKS
Prindle, D
Pruneau, C
Putschke, J
Rai, G
Rakness, G
Raniwala, R
Raniwala, S
Ravel, O
Ray, RL
Razin, SV
Reichhold, D
Reid, JG
Renault, G
Retiere, F
Ridiger, A
Ritter, HG
Roberts, JB
Rogachevski, OV
Romero, JL
Rose, A
Roy, C
Ruan, LJ
Sahoo, R
Sakrejda, I
Salur, S
Sandweiss, J
Savin, I
Schambach, J
Scharenberg, RP
Schmitz, N
Schroeder, LS
Schweda, K
Seger, J
Seliverstov, D
Seyboth, P
Shahaliev, E
Shao, M
Sharma, M
Shestermanov, KE
Shimanskii, SS
Singaraju, RN
Simon, F
Skoro, G
Smirnov, N
Snellings, R
Sood, G
Sorensen, P
Sowinski, J
Spinka, HM
Srivastava, B
Stanislaus, S
Stock, R
Stolpovsky, A
Strikhanov, M
Stringfellow, B
Struck, C
Suaide, AAP
Sugarbaker, E
Suire, C
Sumbera, M
Surrow, B
Symons, TJM
de Toledo, AS
Szarwas, P
Tai, A
Takahashi, J
Tang, AH
Thein, D
Thomas, JH
Tikhomirov, V
Tokarev, M
Tonjes, MB
Trainor, TA
Trentalange, S
Tribble, RE
Trivedi, MD
Trofimov, V
Tsai, O
Ullrich, T
Underwood, DG
Van Buren, G
VanderMolen, AM
Vasiliev, AN
Vasiliev, M
Vigdor, SE
Viyogi, YP
Voloshin, SA
Waggoner, W
Wang, F
Wang, G
Wang, XL
Wang, ZM
Ward, H
Watson, JW
Wells, R
Westfall, GD
Whitten, C
Wieman, H
Willson, R
Wissink, SW
Witt, R
Wood, J
Wu, J
Xu, N
Xu, Z
Xu, ZZ
Yakutin, AE
Yamamoto, E
Yang, J
Yepes, P
Yurevich, VI
Zanevski, YV
Zborovsky, I
Zhang, H
Zhang, HY
Zhang, WM
Zhang, ZP
Zolnierczuk, PA
Zoulkarneev, R
Zoulkarneeva, J
Zubarev, AN
TI Photon and neutral pion production in Au plus Au collisions at root
s(NN)=130 GeV
SO PHYSICAL REVIEW C
LA English
DT Article
ID HEAVY-ION COLLISIONS; QUARK-GLUON PLASMA; FLOW; STAR
AB We report inclusive photon measurements about midrapidity (\y\<0.5) from Au-197+Au-197 collisions at roots(NN)=130 GeV at RHIC. Photon pair conversions were reconstructed from electron and positron tracks measured with the Time Projection Chamber (TPC) of the STAR experiment. With this method, an energy resolution of DeltaE/Eapproximate to2% at 0.5 GeV has been achieved. Reconstructed photons have also been used to measure the transverse momentum (p(t)) spectra of pi(0) mesons about midrapidity (\y\<1) via the pi(0)-->gammagamma decay channel. The fractional contribution of the pi(0)-->gammagamma decay to the inclusive photon spectrum decreases by 20%+/-5% between p(t)=1.65 GeV/c and p(t)=2.4 GeV/c in the most central events, indicating that relative to pi(0)-->gammagamma decay the contribution of other photon sources is substantially increasing.
C1 Univ Birmingham, Birmingham, W Midlands, England.
Argonne Natl Lab, Argonne, IL 60439 USA.
Brookhaven Natl Lab, Upton, NY 11973 USA.
Univ Calif Berkeley, Berkeley, CA 94720 USA.
Univ Calif Davis, Davis, CA 95616 USA.
Univ Calif Los Angeles, Los Angeles, CA 90095 USA.
Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
Creighton Univ, Omaha, NE 68178 USA.
AS CR, Inst Nucl Phys, Prague, Czech Republic.
JINR, Lab High Energy, Dubna, Russia.
JINR, Particle Phys Lab, Dubna, Russia.
Goethe Univ Frankfurt, D-6000 Frankfurt, Germany.
Indiana Univ, Bloomington, IN 47408 USA.
Inst Phys, Bhubaneswar 751005, Orissa, India.
Inst Rech Subatom, Strasbourg, France.
Univ Jammu, Jammu 180001, India.
Kent State Univ, Kent, OH 44242 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany.
Michigan State Univ, E Lansing, MI 48824 USA.
Moscow Engn Phys Inst, Moscow 115409, Russia.
CUNY City Coll, New York, NY 10031 USA.
NIKHEF, Amsterdam, Netherlands.
Ohio State Univ, Columbus, OH 43210 USA.
Panjab Univ, Chandigarh 160014, India.
Penn State Univ, University Pk, PA 16802 USA.
Inst High Energy Phys, Protvino, Russia.
Purdue Univ, W Lafayette, IN 47907 USA.
Univ Rajasthan, Jaipur 302004, Rajasthan, India.
Rice Univ, Houston, TX 77251 USA.
Univ Sao Paulo, Sao Paulo, Brazil.
Univ Sci & Technol China, Anhui 230027, Peoples R China.
Shanghai Inst Nucl Res, Shanghai 201800, Peoples R China.
SUBATECH, Nantes, France.
Texas A&M, College Stn, TX 77843 USA.
Univ Texas, Austin, TX 78712 USA.
Valparaiso Univ, Valparaiso, IN 46383 USA.
Variable Energy Cyclotron Ctr, Kolkata 700064, W Bengal, India.
Warsaw Univ Technol, Warsaw, Poland.
Univ Washington, Seattle, WA 98195 USA.
Wayne State Univ, Detroit, MI 48201 USA.
HZNU, CCNU, Inst Particle Phys, Wuhan 430079, Peoples R China.
Yale Univ, New Haven, CT 06520 USA.
Univ Zagreb, HR-10002 Zagreb, Croatia.
RP Adams, J (reprint author), Univ Birmingham, Birmingham, W Midlands, England.
RI Strikhanov, Mikhail/P-7393-2014; Kisiel, Adam/O-8754-2015; Tikhomirov,
Vladimir/M-6194-2015; Chaloupka, Petr/E-5965-2012; Nevski,
Pavel/M-6292-2015; Suaide, Alexandre/L-6239-2016; Okorokov,
Vitaly/C-4800-2017; Skoro, Goran/F-3642-2010; Planinic,
Mirko/E-8085-2012; Castillo Castellanos, Javier/G-8915-2013; Lednicky,
Richard/K-4164-2013; Voloshin, Sergei/I-4122-2013; Zborovsky,
Imrich/G-7964-2014; Sumbera, Michal/O-7497-2014; Skoro,
Goran/P-1229-2014; Johnson, Ian/I-2439-2013; Chen, Yu/E-3788-2012;
Takahashi, Jun/B-2946-2012; Barnby, Lee/G-2135-2010; Witt,
Richard/H-3560-2012
OI Strikhanov, Mikhail/0000-0003-2586-0405; Kisiel,
Adam/0000-0001-8322-9510; Tikhomirov, Vladimir/0000-0002-9634-0581;
Suaide, Alexandre/0000-0003-2847-6556; Okorokov,
Vitaly/0000-0002-7162-5345; Castillo Castellanos,
Javier/0000-0002-5187-2779; Sumbera, Michal/0000-0002-0639-7323; Skoro,
Goran/0000-0001-7745-9045; Takahashi, Jun/0000-0002-4091-1779; Barnby,
Lee/0000-0001-7357-9904;
NR 22
TC 18
Z9 18
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
EI 1089-490X
J9 PHYS REV C
JI Phys. Rev. C
PD OCT
PY 2004
VL 70
IS 4
AR 044902
DI 10.1103/PhysRevC.70.044902
PG 12
WC Physics, Nuclear
SC Physics
GA 870FN
UT WOS:000225043100054
ER
PT J
AU Ahmad, I
Greene, JP
Moore, EF
Kutschera, W
Vockenhuber, C
AF Ahmad, I
Greene, JP
Moore, EF
Kutschera, W
Vockenhuber, C
TI Absolute intensities of gamma rays in Hf-182 decay
SO PHYSICAL REVIEW C
LA English
DT Article
ID TA-182
AB The absolute intensities of gamma rays produced in the decay of Hf-182 were determined by measuring its gamma-ray spectra with high-resolution Ge spectrometers. Because the sample was chemically purified more than 30 years ago, the daughter Ta-182 (t(1/2)=114.43 d) was in secular equilibrium with Hf-182 (t(1/2)=8.90x10(6) yr). The absolute intensities of Hf-182 gamma rays were determined with respect to the intensities of Ta-182 gamma lines. In order to minimize summing losses from the peak areas, spectra were measured at low absolute efficiencies. The absolute intensity of the 270.4-keV-gamma ray was found to be (79.0+/-0.6)% per Hf-182 beta(-) decay.
C1 Argonne Natl Lab, Argonne, IL 60439 USA.
Univ Vienna, Inst Isotope Res & Nucl Phys, Vienna, Austria.
RP Ahmad, I (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
NR 11
TC 4
Z9 5
U1 0
U2 0
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 4
AR 047301
DI 10.1103/PhysRevC.70.047301
PG 3
WC Physics, Nuclear
SC Physics
GA 870FN
UT WOS:000225043100075
ER
PT J
AU Balabanski, DL
Danchev, M
Hartley, DJ
Riedinger, LL
Zeidan, O
Zhang, JY
Barton, CJ
Beausang, CW
Caprio, MA
Casten, RF
Cooper, JR
Hecht, AA
Krucken, R
Novak, JR
Zamfir, NV
Zyromski, KE
AF Balabanski, DL
Danchev, M
Hartley, DJ
Riedinger, LL
Zeidan, O
Zhang, JY
Barton, CJ
Beausang, CW
Caprio, MA
Casten, RF
Cooper, JR
Hecht, AA
Krucken, R
Novak, JR
Zamfir, NV
Zyromski, KE
TI Possible assignment of chiral twin bands in Ir-188
SO PHYSICAL REVIEW C
LA English
DT Article
ID GROUND-STATE PROPERTIES; ROTATIONAL BANDS; TRIAXIAL NUCLEI; SPIN;
COEXISTENCE; ISOTOPES
AB High-spin states in the doubly-odd Z=77 nucleus Ir-188 were populated in the W-186(Li-7,5n) reaction at 52 MeV. Two nearly degenerate DeltaI=1 sequences with the same parity were established. Both bands have been assigned the pih(9/2)circle timesnui(13/2) configuration, based on the systematic behavior of these excitations in the Ir nuclei and on the measured values for the B(M1)/B(E2) ratios, and they are suggested as candidates for a chiral doublet.
C1 Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
St Kliment Ohridski Univ Sofia, Fac Phys, BG-1164 Sofia, Bulgaria.
Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
Yale Univ, Dept Phys, WNSL, New Haven, CT 06520 USA.
Clark Univ, Worcester, MA 01610 USA.
Natl Inst Phys & Nucl Engn, Bucharest, Romania.
RP Balabanski, DL (reprint author), Univ Camerino, Dipartimento Fis, I-62032 Camerino, MC, Italy.
RI Zamfir, Nicolae Victor/F-2544-2011; Kruecken, Reiner/A-1640-2013
OI Kruecken, Reiner/0000-0002-2755-8042
NR 35
TC 31
Z9 34
U1 1
U2 1
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 4
AR 044305
DI 10.1103/PhysRevC.70.044305
PG 8
WC Physics, Nuclear
SC Physics
GA 870FN
UT WOS:000225043100023
ER
PT J
AU Esbensen, H
AF Esbensen, H
TI Constraints on the Be-7(p,gamma)B-8 radiative capture rate from charge
symmetry
SO PHYSICAL REVIEW C
LA English
DT Article
ID CROSS-SECTIONS; LOW ENERGIES; COULOMB; B-8
AB Cross sections for the dipole radiative capture reactions Li-7(n,gamma)Li-8 and Be-7(p,gamma)B-8 are calculated in a two-body model, which is based on a Woods-Saxon parametrization of the nuclear interaction. The well depth is adjusted for each reaction channel so that the measured separation energies and s-wave scattering lengths are reproduced. The calculations are repeated for a wide range of the radius and the diffuseness of the interaction. The predicted S factor for the radiative proton capture on Be-7 falls within a surprisingly narrow range of values when the model is calibrated to reproduce measurements of the mirror reaction Li-7(n,gamma)Li-8. The simplified model used here is consistent with the shell model approach for proton capture on Be-7 but it gives a significantly smaller cross section for neutron capture on Li-7.
C1 Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
RP Esbensen, H (reprint author), Argonne Natl Lab, Div Phys, 9700 S Cass Ave, Argonne, IL 60439 USA.
NR 17
TC 6
Z9 6
U1 0
U2 0
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 4
AR 047603
DI 10.1103/PhysRevC.70.047603
PG 4
WC Physics, Nuclear
SC Physics
GA 870FN
UT WOS:000225043100079
ER
PT J
AU Friar, JL
van Kolck, U
Rentmeester, MCM
Timmermans, RGE
AF Friar, JL
van Kolck, U
Rentmeester, MCM
Timmermans, RGE
TI Nucleon-mass difference in chiral perturbation theory and nuclear forces
SO PHYSICAL REVIEW C
LA English
DT Article
ID CHARGE-SYMMETRY-BREAKING; PROTON ELASTIC-SCATTERING; EFFECTIVE-FIELD
THEORY; PARTIAL-WAVE ANALYSIS; 3-NUCLEON FORCES; 2-PION EXCHANGE;
LAGRANGIANS; VIOLATION; INDEPENDENCE; ENERGY
AB A method is developed for treating the effect of the neutron-proton mass difference in isospin-violating nuclear forces. Previous treatments utilized an awkward subtraction scheme to generate these forces. A field redefinition is used to remove that mass difference from the free Lagrangian (and hence from asymptotic nucleon states) and replace its effect by effective interactions. Previous calculations of static class II charge-independence-breaking and class III charge-symmetry-breaking potentials are verified using the new scheme, which is also used to calculate class IV nuclear forces. Two-body forces of the latter type are found to be identical to previously obtained results. A three-body force is also found. Problems involving Galilean invariance with class IV one-pion-exchange forces are identified and resolved.
C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
Univ Arizona, Dept Phys, Tucson, AZ 85721 USA.
Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA.
Univ Nijmegen, Dept Theoret Phys, NL-6500 GL Nijmegen, Netherlands.
Univ Groningen, KVI, NL-9747 AA Groningen, Netherlands.
RP Friar, JL (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
NR 71
TC 32
Z9 32
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
EI 1089-490X
J9 PHYS REV C
JI Phys. Rev. C
PD OCT
PY 2004
VL 70
IS 4
AR 044001
DI 10.1103/PhysRevC.70.044001
PG 9
WC Physics, Nuclear
SC Physics
GA 870FN
UT WOS:000225043100011
ER
PT J
AU Hale, SE
Champagne, AE
Iliadis, C
Hansper, VY
Powell, DC
Blackmon, JC
AF Hale, SE
Champagne, AE
Iliadis, C
Hansper, VY
Powell, DC
Blackmon, JC
TI Investigation of the Na-23(p,gamma)Mg-24 and Na-23(p,alpha)Ne-20
reactions via (He-3,d) spectroscopy
SO PHYSICAL REVIEW C
LA English
DT Article
ID THERMONUCLEAR REACTION-RATES; PROTON-THRESHOLD STATES; RED GIANT STARS;
ALUMINUM ABUNDANCES; GLOBULAR-CLUSTERS; QUASIBOUND LEVELS; NENA CYCLE;
MG-24; STRENGTHS; RESONANCE
AB States near the Na-23+p threshold in Mg-24 were investigated using the Na-23(He-3,d)Mg-24 reaction over the angular range of 5degreesless than or equal totheta(lab)less than or equal to35degrees at E(He-3)=20 MeV. Spectroscopic factors were extracted for states corresponding to resonances in the Na-23(p,gamma)Mg-24 and Na-23(p,alpha)Ne-20 reactions. We find that one state, corresponding to a previously unobserved resonance at E-c.m.=138 keV, may make a significant contribution to the rates of both reactions at low temperatures. Another state, corresponding to a possible resonance at E-c.m.=37 keV may make a small contribution to the Na-23(p,alpha)Ne-20 reaction. New rates for the Na-23(p,gamma)Mg-24 and Na-23(p,alpha)Ne-20 reactions are presented and the astrophysical implications are discussed.
C1 Univ N Carolina, Chapel Hill, NC 27599 USA.
Triangle Univ Nucl Lab, Durham, NC 27708 USA.
Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
RP Hale, SE (reprint author), Univ N Carolina, Chapel Hill, NC 27599 USA.
NR 54
TC 43
Z9 43
U1 1
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
EI 1089-490X
J9 PHYS REV C
JI Phys. Rev. C
PD OCT
PY 2004
VL 70
IS 4
AR 045802
DI 10.1103/PhysRevC.70.045802
PG 14
WC Physics, Nuclear
SC Physics
GA 870FN
UT WOS:000225043100070
ER
PT J
AU Holl, A
Krassnigg, A
Roberts, CD
AF Holl, A
Krassnigg, A
Roberts, CD
TI Pseudoscalar meson radial excitations
SO PHYSICAL REVIEW C
LA English
DT Article
ID DYSON-SCHWINGER EQUATIONS; VECTOR CURRENT HYPOTHESIS; QUARK PROPAGATOR;
CHIRAL-SYMMETRY; MODEL; SPECTRUM; SYSTEMS; MASS; PI
AB Goldstone modes are the only pseudoscalar mesons to possess a nonzero leptonic decay constant in the chiral limit when chiral symmetry is dynamically broken. The decay constants of their radial excitations vanish. These features and aspects of their impact on the meson spectrum are illustrated using a manifestly covariant and symmetry-preserving model of the kernels in the gap and Bethe-Salpeter equations.
C1 Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
Univ Rostock, Fachbereich Phys, D-18051 Rostock, Germany.
RP Holl, A (reprint author), Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
NR 32
TC 98
Z9 98
U1 0
U2 1
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 4
AR 042203
DI 10.1103/PhysRevC.70.042203
PG 5
WC Physics, Nuclear
SC Physics
GA 870FN
UT WOS:000225043100009
ER
PT J
AU Joo, K
Smith, LC
Aznauryan, IG
Burkert, VD
Minehart, R
Adams, G
Ambrozewicz, P
Anciant, E
Anghinolfi, M
Asavapibhop, B
Asryan, G
Audit, G
Auger, T
Avakian, H
Bagdasaryan, H
Ball, JP
Barrow, S
Batourine, V
Battaglieri, M
Beard, K
Bektasoglu, M
Benmouna, N
Bianchi, N
Biselli, AS
Boiarinov, S
Bonner, BE
Bouchigny, S
Bradford, R
Branford, D
Briscoe, WJ
Brooks, WK
Bultmann, S
Butuceanu, C
Calarco, JR
Carman, DS
Carnahan, B
Cetina, C
Chen, S
Ciciani, L
Cole, PL
Cords, D
Corvisiero, P
Crabb, D
Crannell, H
Cummings, JP
De Sanctis, E
DeVita, R
Degtyarenko, PV
Dennis, L
Deur, A
Dharmawardane, KV
Dhuga, KS
Djalali, C
Dodge, GE
Doughty, D
Dragovitsch, P
Dugger, M
Dytman, S
Dzyubak, OP
Egiyan, H
Egiyan, KS
Elouadrhiri, L
Empl, A
Eugenio, P
Fersch, R
Feuerbach, RJ
Forest, TA
Funsten, H
Gaff, SJ
Garcon, M
Gavalian, G
Gilad, S
Gilfoyle, GP
Giovanetti, KL
Gothe, RW
Griffioen, KA
Guidal, M
Guillo, M
Guler, N
Guo, L
Gyurjyan, V
Hadjidakis, C
Hakobyan, RS
Hardie, J
Heddle, D
Hersman, FW
Hicks, K
Hleiqawi, I
Holtrop, M
Hu, J
Hyde-Wright, CE
Ilieva, Y
Ireland, D
Ito, MM
Jenkins, D
Juengst, HG
Kellie, JD
Kelley, JH
Khandaker, M
Kim, KY
Kim, K
Kim, W
Klein, A
Klein, FJ
Klimenko, AV
Klusman, M
Kossov, M
Koubarovski, V
Kramer, LH
Kuhn, SE
Kuhn, J
Lachniet, J
Laget, JM
Langheinrich, J
Lawrence, D
Lee, T
Livingston, K
Lukashin, K
Manak, JJ
Marchand, C
McAleer, S
McNabb, JWC
Mecking, BA
Mestayer, MD
Meyer, CA
Mikhailov, K
Mirazita, M
Miskimen, R
Mokeev, V
Morand, L
Morrow, SA
Muccifora, V
Mueller, J
Mutchler, GS
Napolitano, J
Nasseripour, R
Nelson, SO
Niccolai, S
Niculescu, G
Niculescu, I
Niczyporuk, BB
Niyazov, RA
Nozar, M
O'Rielly, GV
Osipenko, M
Ostrovidov, AI
Park, K
Pasyuk, E
Peterson, G
Philips, SA
Pivnyuk, N
Pocanic, D
Pogorelko, O
Polli, E
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
Sabourov, K
Salgado, C
Santoro, JP
Sapunenko, V
Schumacher, RA
Serov, VS
Sharabian, YG
Shaw, J
Simionatto, S
Skabelin, AV
Smith, ES
Sober, DI
Spraker, M
Stavinsky, A
Stepanyan, S
Stepanyan, SS
Stokes, BE
Stoler, P
Strakovsky, II
Strauch, S
Taiuti, M
Taylor, S
Tedeschi, DJ
Thoma, U
Thompson, R
Tkabladze, A
Todor, L
Tur, C
Ungaro, M
Vineyard, MF
Vlassov, AV
Wang, K
Weinstein, LB
Weller, H
Weygand, DP
Williams, M
Wolin, E
Wood, MH
Yegneswaran, A
Yun, J
Zana, L
AF Joo, K
Smith, LC
Aznauryan, IG
Burkert, VD
Minehart, R
Adams, G
Ambrozewicz, P
Anciant, E
Anghinolfi, M
Asavapibhop, B
Asryan, G
Audit, G
Auger, T
Avakian, H
Bagdasaryan, H
Ball, JP
Barrow, S
Batourine, V
Battaglieri, M
Beard, K
Bektasoglu, M
Benmouna, N
Bianchi, N
Biselli, AS
Boiarinov, S
Bonner, BE
Bouchigny, S
Bradford, R
Branford, D
Briscoe, WJ
Brooks, WK
Bultmann, S
Butuceanu, C
Calarco, JR
Carman, DS
Carnahan, B
Cetina, C
Chen, S
Ciciani, L
Cole, PL
Cords, D
Corvisiero, P
Crabb, D
Crannell, H
Cummings, JP
De Sanctis, E
DeVita, R
Degtyarenko, PV
Dennis, L
Deur, A
Dharmawardane, KV
Dhuga, KS
Djalali, C
Dodge, GE
Doughty, D
Dragovitsch, P
Dugger, M
Dytman, S
Dzyubak, OP
Egiyan, H
Egiyan, KS
Elouadrhiri, L
Empl, A
Eugenio, P
Fersch, R
Feuerbach, RJ
Forest, TA
Funsten, H
Gaff, SJ
Garcon, M
Gavalian, G
Gilad, S
Gilfoyle, GP
Giovanetti, KL
Gothe, RW
Griffioen, KA
Guidal, M
Guillo, M
Guler, N
Guo, L
Gyurjyan, V
Hadjidakis, C
Hakobyan, RS
Hardie, J
Heddle, D
Hersman, FW
Hicks, K
Hleiqawi, I
Holtrop, M
Hu, J
Hyde-Wright, CE
Ilieva, Y
Ireland, D
Ito, MM
Jenkins, D
Juengst, HG
Kellie, JD
Kelley, JH
Khandaker, M
Kim, KY
Kim, K
Kim, W
Klein, A
Klein, FJ
Klimenko, AV
Klusman, M
Kossov, M
Koubarovski, V
Kramer, LH
Kuhn, SE
Kuhn, J
Lachniet, J
Laget, JM
Langheinrich, J
Lawrence, D
Lee, T
Livingston, K
Lukashin, K
Manak, JJ
Marchand, C
McAleer, S
McNabb, JWC
Mecking, BA
Mestayer, MD
Meyer, CA
Mikhailov, K
Mirazita, M
Miskimen, R
Mokeev, V
Morand, L
Morrow, SA
Muccifora, V
Mueller, J
Mutchler, GS
Napolitano, J
Nasseripour, R
Nelson, SO
Niccolai, S
Niculescu, G
Niculescu, I
Niczyporuk, BB
Niyazov, RA
Nozar, M
O'Rielly, GV
Osipenko, M
Ostrovidov, AI
Park, K
Pasyuk, E
Peterson, G
Philips, SA
Pivnyuk, N
Pocanic, D
Pogorelko, O
Polli, E
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
Sabourov, K
Salgado, C
Santoro, JP
Sapunenko, V
Schumacher, RA
Serov, VS
Sharabian, YG
Shaw, J
Simionatto, S
Skabelin, AV
Smith, ES
Sober, DI
Spraker, M
Stavinsky, A
Stepanyan, S
Stepanyan, SS
Stokes, BE
Stoler, P
Strakovsky, II
Strauch, S
Taiuti, M
Taylor, S
Tedeschi, DJ
Thoma, U
Thompson, R
Tkabladze, A
Todor, L
Tur, C
Ungaro, M
Vineyard, MF
Vlassov, AV
Wang, K
Weinstein, LB
Weller, H
Weygand, DP
Williams, M
Wolin, E
Wood, MH
Yegneswaran, A
Yun, J
Zana, L
CA CLAS Collaboration
TI Measurement of the polarized structure function sigma(LT ') for
p((e)over-right-arrow,e(')pi(+))n in the Delta(1232) resonance region
SO PHYSICAL REVIEW C
LA English
DT Article
ID ELECTROPRODUCTION; PROTON
AB The polarized longitudinal-transverse structure function sigma(LT') has been measured using the p((e) over right arrow ,e'pi(+))n reaction in the Delta(1232) resonance region at Q(2)=0.40 and 0.65 GeV2. No previous sigma(LT') data exist for this reaction channel. The kinematically complete experiment was performed at the Jefferson Lab with the CEBAF large acceptance spectrometer using longitudinally polarized electrons at an energy of 1.515 GeV. A partial-wave analysis of the data shows generally better agreement with recent phenomenological models of pion electroproduction compared to the previously measured pi(0)p channel. A fit to both pi(0)p and pi(+)n channels using a unitary isobar model suggests the unitarized Born terms provide a consistent description of the nonresonant background. The t-channel pion pole term is important in the pi(0)p channel through a rescattering correction, which could be model dependent.
C1 Univ Connecticut, Storrs, CT 06269 USA.
Univ Virginia, Charlottesville, VA 22901 USA.
Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
Arizona State Univ, Tempe, AZ 85287 USA.
CEA Saclay, Serv Phys Nucl, F-91191 Gif Sur Yvette, France.
Univ Calif Los Angeles, Los Angeles, CA 90095 USA.
Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
Catholic Univ Amer, Washington, DC 20064 USA.
Christopher Newport Univ, Newport News, VA 23606 USA.
Duke Univ, Durham, NC 27708 USA.
Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland.
Florida Int Univ, Miami, FL 33199 USA.
Florida State Univ, Tallahassee, FL 32306 USA.
Univ Giessen, Inst Phys, D-35392 Giessen, Germany.
Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland.
Lab Nazl Frascati, Ist Nazl Fis Nucl, Frascati, Italy.
Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy.
Idaho State Univ, Pocatello, ID 83209 USA.
Inst Phys Nucl, Orsay, France.
Inst Theoret & Expt Phys, Moscow 117259, Russia.
James Madison Univ, Harrisonburg, VA 22807 USA.
Kyungpook Natl Univ, Taegu 702701, South Korea.
MIT, Cambridge, MA 02139 USA.
Univ Massachusetts, Amherst, MA 01003 USA.
Moscow MV Lomonosov State Univ, Gen Nucl Phys Inst, Moscow 119899, Russia.
Univ New Hampshire, Durham, NH 03824 USA.
Norfolk State Univ, Norfolk, VA 23504 USA.
George Washington Univ, Washington, DC 20052 USA.
Ohio Univ, Athens, OH 45701 USA.
Old Dominion Univ, Norfolk, VA 23529 USA.
Penn State Univ, University Pk, PA 16802 USA.
Univ Pittsburgh, Pittsburgh, PA 15260 USA.
Rensselaer Polytech Inst, Troy, NY 12180 USA.
Rice Univ, Houston, TX 77005 USA.
Univ Richmond, Richmond, VA 23173 USA.
Univ S Carolina, Columbia, SC 29208 USA.
Union Coll, Schenectady, NY 12308 USA.
Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA.
Coll William & Mary, Williamsburg, VA 23187 USA.
Yerevan Phys Inst, Yerevan 375036, Armenia.
RP Joo, K (reprint author), Univ Connecticut, Storrs, CT 06269 USA.
RI Osipenko, Mikhail/N-8292-2015; Ireland, David/E-8618-2010; Bektasoglu,
Mehmet/A-2074-2012; Protopopescu, Dan/D-5645-2012; riccardi,
gabriele/A-9269-2012; Zana, Lorenzo/H-3032-2012; Brooks,
William/C-8636-2013; Schumacher, Reinhard/K-6455-2013; Auger,
Thierry/L-1073-2013; Meyer, Curtis/L-3488-2014; Sabatie,
Franck/K-9066-2015
OI Osipenko, Mikhail/0000-0001-9618-3013; Ireland,
David/0000-0001-7713-7011; Brooks, William/0000-0001-6161-3570;
Schumacher, Reinhard/0000-0002-3860-1827; Meyer,
Curtis/0000-0001-7599-3973; Sabatie, Franck/0000-0001-7031-3975
NR 26
TC 38
Z9 38
U1 0
U2 2
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 4
AR 042201
DI 10.1103/PhysRevC.70.042201
PG 6
WC Physics, Nuclear
SC Physics
GA 870FN
UT WOS:000225043100007
ER
PT J
AU Julia-Diaz, B
Riska, DO
Coester, F
AF Julia-Diaz, B
Riska, DO
Coester, F
TI Axial transition form factors and pion decay of baryon resonances
SO PHYSICAL REVIEW C
LA English
DT Article
ID QUARK-MODEL; THRESHOLD; ELECTROPRODUCTION; NUCLEON
AB The pion decay constants of the lowest orbitally excited states of the nucleon and the Delta(1232) along with the corresponding axial transition form factors are calculated with Poincare covariant constituent-quark models with instant, point, and front forms of relativistic kinematics. The model wave functions are chosen such that the calculated electromagnetic and axial form factors of the nucleon represent the empirical values in all three forms of kinematics, when calculated with single-constituent currents. The pion decay widths calculated with the three forms of kinematics are smaller than the empirical values. Front and instant form kinematics provide a similar description, with a slight preference for front form, while the point form values are significantly smaller in the case of the lowest positive parity resonances.
C1 Univ Helsinki, Helsinki Inst Phys, FIN-00014 Helsinki, Finland.
Univ Helsinki, Dept Phys Sci, FIN-00014 Helsinki, Finland.
Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
RP Julia-Diaz, B (reprint author), Univ Helsinki, Helsinki Inst Phys, POB 64, FIN-00014 Helsinki, Finland.
EM Bruno.Julia@helsinki.fi; riska@pcu.helsinki.fi; coester@anl.gov
RI Julia-Diaz, Bruno/E-5825-2010
OI Julia-Diaz, Bruno/0000-0002-0145-6734
NR 20
TC 7
Z9 7
U1 0
U2 0
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 4
AR 045204
DI 10.1103/PhysRevC.70.045204
PG 8
WC Physics, Nuclear
SC Physics
GA 870FN
UT WOS:000225043100064
ER
PT J
AU Luo, YX
Rasmussen, JO
Hamilton, JH
Ramayya, AV
Hwang, JK
Zhu, SJ
Gore, PM
Wu, SC
Lee, IY
Fallon, P
Ginter, TN
Ter-Akopian, GM
Daniel, AV
Stoyer, MA
Donangelo, R
Gelberg, A
AF Luo, YX
Rasmussen, JO
Hamilton, JH
Ramayya, AV
Hwang, JK
Zhu, SJ
Gore, PM
Wu, SC
Lee, IY
Fallon, P
Ginter, TN
Ter-Akopian, GM
Daniel, AV
Stoyer, MA
Donangelo, R
Gelberg, A
TI New level schemes with high-spin states of Tc-105,Tc-107,Tc-109
SO PHYSICAL REVIEW C
LA English
DT Article
ID ISOTOPES; FISSION; IDENTIFICATION; QUASIPARTICLE; BANDS
AB New level schemes of odd-Z Tc-105,Tc-107,Tc-109 are proposed based on the Cf-252 spontaneous-fission-gamma data taken with Gammasphere in 2000. Bands of levels are considerably extended and expanded to show rich spectroscopic information. Spin/parity and configuration assignments are made based on determinations of multipolarities of low-lying transitions and the level analogies to the previously reported levels, and to those of the neighboring Rh isotopes. A non-yrast negative-parity band built on the 3/2(-)[301] orbital is observed for the first time in Tc-105. A positive-parity band built on the 1/2(+)[431] intruder orbital originating from the pi(g(7/2)/d(5/2)) subshells and having a strong deformation-driving effect is observed for the first time in Tc-105, and assigned in Tc-107. A positive-parity band built on the excited 11/2(+) level, which has rather low excitation energy and predominantly decays into the 9/2(+) level of the ground state band, provides evidence of triaxiality in Tc-107,Tc-109, and probably also in Tc-105. Rotational constants are calculated and discussed for the K=1/2 intruder bands using the Bohr-Mottelson formula. Level systematics are discussed in terms of the locations of proton Fermi levels and deformations. The band crossings of yrast positive-parity bands are observed, most likely related to h(11/2) neutron alignment. Triaxial-rotor-plus-particle model calculations performed with epsilon=0.32 and gamma=-22.5degrees on the prolate side of maximum triaxiality yielded the best reproduction of the excitation energies, signature splittings, and branching ratios of the positive-parity bands (except for the intruder bands) of these Tc isotopes. The significant discrepancies between the triaxial-rotor-plus-particle model calculations and experiment for the K=1/2 intruder bands in Tc-105,Tc-107 need further theoretical studies.
C1 Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA.
Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China.
Natl Tsing Hua Univ, Dept Phys, Hsinchu, Taiwan.
Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA.
Joint Inst Nucl Res, Flerov Lab Nucl React, Dubna, Russia.
Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Univ Fed Rio de Janeiro, BR-68528 Rio De Janeiro, Brazil.
Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany.
RP Luo, YX (reprint author), Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA.
NR 24
TC 44
Z9 48
U1 0
U2 3
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 4
AR 044310
DI 10.1103/PhysRevC.70.044310
PG 18
WC Physics, Nuclear
SC Physics
GA 870FN
UT WOS:000225043100028
ER
PT J
AU Pasquini, B
Vanderhaeghen, M
AF Pasquini, B
Vanderhaeghen, M
TI Resonance estimates for single spin asymmetries in elastic
electron-nucleon scattering
SO PHYSICAL REVIEW C
LA English
DT Article
ID VIRTUAL COMPTON-SCATTERING; LEPTON-HADRON SCATTERING; MAGNETIC
FORM-FACTORS; PROTON SCATTERING; AMPLITUDES
AB We discuss the target and beam normal spin asymmetries in elastic electron-nucleon scattering which depend on the imaginary part of two-photon exchange processes between electron and nucleon. We express this imaginary part as a phase space integral over the doubly virtual Compton scattering tensor on the nucleon. We use unitarity to model the doubly virtual Compton scattering tensor in the resonance region in terms of gamma*N-->piN electroabsorption amplitudes. Taking those amplitudes from a phenomenological analysis of pion electroproduction observables, we present results for beam and target normal single spin asymmetries for elastic electron-nucleon scattering for beam energies below 1 GeV and in the 1-3 GeV region, where several experiments are performed or are in progress.
C1 Univ Pavia, Dipartimento Fis Nucl & Teor, I-27100 Pavia, Italy.
Ist Nazl Fis Nucl, Sez Pavia, I-27100 Pavia, Italy.
ECT, Villazzano, Trento, Italy.
Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
Coll William & Mary, Dept Phys, Williamsburg, VA 23187 USA.
RP Pasquini, B (reprint author), Univ Pavia, Dipartimento Fis Nucl & Teor, I-27100 Pavia, Italy.
OI Pasquini, Barbara/0000-0001-8433-5649
NR 28
TC 38
Z9 38
U1 0
U2 0
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 4
AR 045206
DI 10.1103/PhysRevC.70.045206
PG 14
WC Physics, Nuclear
SC Physics
GA 870FN
UT WOS:000225043100066
ER
PT J
AU Raman, S
Ouyang, X
Islam, MA
Starner, JW
Jurney, ET
Lynn, JE
Martinez-Pinedo, G
AF Raman, S
Ouyang, X
Islam, MA
Starner, JW
Jurney, ET
Lynn, JE
Martinez-Pinedo, G
TI Thermal-neutron capture by 58Ni, 59Ni, and 60Ni
SO PHYSICAL REVIEW C
LA English
DT Review
ID GAMMA-RAY SPECTROSCOPY; 2-NEUTRON TRANSFER-REACTIONS; CHARGED-PARTICLE
REACTIONS; VECTOR ANALYZING POWER; NI-59 FOLLOWING BETA; 11.4 MEV
PHOTONS; RADIATIVE-CAPTURE; NICKEL ISOTOPES; LEVEL STRUCTURE;
CROSS-SECTIONS
AB We have studied the primary and secondary gamma rays (414 in Ni-59, 390 in Ni-60, and 240 in Ni-61) following thermal-neutron capture by the stable Ni-58, radioactive Ni-59, and stable Ni-60 isotopes. Most of these gamma rays have been incorporated into the corresponding level schemes consisting of 65 levels in Ni-59, 88 levels in Ni-60, and 40 levels in Ni-61. The measured neutron separation energies (S-n in keV) for Ni-59, Ni-60, and Ni-61 are, respectively, 8999.28+/-0.05, 11 387.73+/-0.05, and 7820.11+/-0.05. The measured thermal-neutron capture cross sections (in barns) for Ni-58, Ni-59, and Ni-60 are, respectively, 4.13+/-0.05, 73.7+/-1.8, and 2.34+/-0.05. In all three cases, primary electric-dipole (E1) transitions account for the bulk of the total capture cross section. We have calculated these E1 partial cross sections (in Ni-59 and Ni-61) using direct-capture theory and models of compound-nuclear capture. The agreement between theory and experiment is good. The experimental level schemes have been compared with the results from a large-basis shell-model calculation. The agreement was also found to be quite good.
C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Univ Autonoma Barcelona, ICREA, E-08193 Barcelona, Spain.
Univ Autonoma Barcelona, Inst Estudis Espacials Catalunya, E-08193 Barcelona, Spain.
Fudan Univ, Inst Modern Phys, Shanghai 200433, Peoples R China.
Rajshahi Univ, Rajshahi 6205, Bangladesh.
RI Martinez-Pinedo, Gabriel/A-1915-2013
OI Martinez-Pinedo, Gabriel/0000-0002-3825-0131
NR 123
TC 12
Z9 12
U1 0
U2 5
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 4
AR 044318
DI 10.1103/PhysRevC.70.044318
PG 39
WC Physics, Nuclear
SC Physics
GA 870FN
UT WOS:000225043100036
ER
PT J
AU Retiere, F
Lisa, MA
AF Retiere, F
Lisa, MA
TI Observable implications of geometrical and dynamical aspects of
freeze-out in heavy ion collisions
SO PHYSICAL REVIEW C
LA English
DT Review
ID QUARK-GLUON PLASMA; RELATIVISTIC NUCLEAR COLLISIONS; BOSE-EINSTEIN
CORRELATIONS; TWISS CORRELATION RADII; PLUS AU COLLISIONS; ELLIPTIC
FLOW; PION INTERFEROMETRY; 2-PARTICLE CORRELATIONS; HBT-INTERFEROMETRY;
HADRON MATTER
AB Using an analytical parametrization of hadronic freeze-out in relativistic heavy ion collisions, we present a detailed study of the connections between features of the freeze-out configuration and physical observables. We focus especially on anisotropic freeze-out configurations (expected in general for collisions at finite impact parameter), azimuthally sensitive Hanburry-Brown-Twiss interferometry, and final-state interactions between nonidentical particles. Model calculations are compared with data taken in the first year of running at RHIC; while not perfect, good agreement is found, raising the hope that a consistent understanding of the full freeze-out scenario at RHIC is possible, an important first step towards understanding the physics of the system prior to freeze-out.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Ohio State Univ, Dept Phys, Columbus, OH 43210 USA.
RP Retiere, F (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
NR 118
TC 197
Z9 197
U1 0
U2 4
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
EI 1089-490X
J9 PHYS REV C
JI Phys. Rev. C
PD OCT
PY 2004
VL 70
IS 4
AR 044907
DI 10.1103/PhysRevC.70.044907
PG 33
WC Physics, Nuclear
SC Physics
GA 870FN
UT WOS:000225043100059
ER
PT J
AU Savard, G
Clark, JA
Buchinger, F
Crawford, JE
Gulick, S
Hardy, JC
Hecht, AA
Iacob, VE
Lee, JKP
Levand, AF
Lundgren, BF
Scielzo, ND
Sharma, KS
Tanihata, I
Towner, IS
Trimble, W
Wang, JC
Wang, Y
Zhou, Z
AF Savard, G
Clark, JA
Buchinger, F
Crawford, JE
Gulick, S
Hardy, JC
Hecht, AA
Iacob, VE
Lee, JKP
Levand, AF
Lundgren, BF
Scielzo, ND
Sharma, KS
Tanihata, I
Towner, IS
Trimble, W
Wang, JC
Wang, Y
Zhou, Z
TI Q value of the superallowed decay of Mg-22 and the calibration of the
Na-21(p,gamma) experiment
SO PHYSICAL REVIEW C
LA English
DT Article
ID PENNING TRAP
AB The masses of the radioactive nuclei Mg-22 and Na-22 have been measured with the Canadian Penning trap on-line mass spectrometer to a precision of 3x10(-8) and 1x10(-8), respectively. A Q(EC) value of 4124.39(73) keV for the superallowed beta decay of Mg-22 is obtained from the difference of these two masses. With this precise Q value, the Ft value for this decay is determined with improved precision and is found to be consistent with the existing precision data set of superallowed Fermi emitters. This provides an important test of the isospin symmetry-breaking corrections. If the mass of Mg-22 determined here is used in the calibration of a recent Na-21(p,gamma)Mg-22 measurement, part of the discrepancy observed in that measurement is removed.
C1 Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
Univ Chicago, Dept Phys, Chicago, IL 60637 USA.
Univ Manitoba, Dept Phys & Astron, Winnipeg, MB R3T 2N2, Canada.
McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada.
Texas A&M Univ, Inst Cyclotron, College Stn, TX 77843 USA.
Univ Maryland, Dept Chem, College Pk, MD 20742 USA.
Queens Univ, Dept Phys, Kingston, ON K7L 3N6, Canada.
RP Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
RI Crawford, John/A-3771-2012
NR 13
TC 29
Z9 29
U1 2
U2 7
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 OCT
PY 2004
VL 70
IS 4
AR 042501
DI 10.1103/PhysRevC.70.042501
PG 4
WC Physics, Nuclear
SC Physics
GA 870FN
UT WOS:000225043100010
ER
PT J
AU Schiavilla, R
Carlson, J
Paris, M
AF Schiavilla, R
Carlson, J
Paris, M
TI Parity-violating interaction effects in the np system
SO PHYSICAL REVIEW C
LA English
DT Article
ID THERMAL-NEUTRON CAPTURE; ELECTRON-DEUTERON SCATTERING; PION-EXCHANGE
CONTRIBUTIONS; ABSOLUTE CROSS-SECTION; PHASE-SHIFT ANALYSIS; PROTON
SCATTERING; FORM-FACTORS; ELECTROMAGNETIC STRUCTURE;
CIRCULAR-POLARIZATION; NON-CONSERVATION
AB We investigate parity-violating observables in the np system, including the longitudinal asymmetry and neutron-spin rotation in np elastic scattering, the photon asymmetry in np radiative capture, and the asymmetries in deuteron photodisintegration d(gamma,n)p in the threshold region and electrodisintegration d(e,e('))np in quasielastic kinematics. To have an estimate of the model dependence for the various predictions, a number of different, latest-generation strong-interaction potentials-Argonne v(18), Bonn 2000, and Nijmegen I-are used in combination with a weak-interaction potential consisting of pi-, rho-, and omega-meson exchanges-the Desplanques-Donoghue-Holstein (DDH) model. The complete bound and scattering problems in the presence of parity-conserving, including electromagnetic, and parity-violating potentials are solved in both configuration and momentum space. The issue of electromagnetic current conservation is examined carefully. We find large cancellations between the asymmetries induced by the parity-violating interactions and those arising from the associated pion-exchange currents. In the np capture, the model dependence is nevertheless quite small, because of constraints arising through the Siegert evaluation of the relevant E-1 matrix elements. In quasielastic electron scattering these processes are found to be insignificant compared to the asymmetry produced by gamma-Z interference on individual nucleons. These two experiments, then, provide clean probes of different aspects of weak-interaction physics associated with parity violation in the np system. Finally, we find that the neutron-spin rotation in np elastic scattering and asymmetry in deuteron disintegration by circularly polarized photons exhibit significant sensitivity both to the values used for the weak vector-meson couplings in the DDH model and to the input strong-interaction potential adopted in the calculation. This reinforces the conclusion that these short-ranged meson couplings are not in themselves physical observables; rather, the parity-violating mixings are the physically relevant parameters.
C1 Jefferson Lab, Newport News, VA 23606 USA.
Old Dominion Univ, Dept Phys, Norfolk, VA 23529 USA.
Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Schiavilla, R (reprint author), Jefferson Lab, Newport News, VA 23606 USA.
NR 91
TC 54
Z9 54
U1 0
U2 1
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 4
AR 044007
DI 10.1103/PhysRevC.70.044007
PG 25
WC Physics, Nuclear
SC Physics
GA 870FN
UT WOS:000225043100017
ER
PT J
AU Tsekhanovich, I
Varapai, N
Rubchenya, V
Rochman, D
Simpson, GS
Sokolov, V
Fioni, G
Al Mahamid, I
AF Tsekhanovich, I
Varapai, N
Rubchenya, V
Rochman, D
Simpson, GS
Sokolov, V
Fioni, G
Al Mahamid, I
TI Fission-product formation in the thermal-neutron-induced fission of odd
Cm isotopes
SO PHYSICAL REVIEW C
LA English
DT Article
ID NUCLEAR-CHARGE; ASYMMETRIC FISSION; KINETIC ENERGIES; MASS SEPARATOR;
DISTRIBUTIONS; YIELDS; FRAGMENTS; REGION; U-238
AB Thermal-neutron-induced fission of Cm-243 was studied at the Lohengrin mass separator. The light-mass peak of the fission-yield curve was investigated, and yields of masses from A=72 to A=120 were obtained. Independent-product yields were determined for nuclear charges Z=28-37. The yield of masses in the superasymmetric region was found to be identical to other fission reactions studied at Lohengrin. The multimodal approach to fission and the macroscopic-microscopic method for the calculation of charge-distribution parameters in isobaric chains were used to analyze experimental results from the fission of Cm-243 and Cm-245. A systematics on fission modes was derived from the analysis and extended to the Cm-247 case. The weight of the Sn-132 mode was found to decrease in Cm-243, relative to the Cm-245 nucleus. A prediction of the Ni-78 yield in the fission of Cm isotopes was made. The feasibility of the study of Ni-78 at Lohengrin has been demonstrated.
C1 Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France.
Petersburg Nucl Phys Inst, Gatchina 188350, Russia.
Commissariat Energie Atom, F-75752 Paris, France.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Tsekhanovich, I (reprint author), Inst Max Von Laue Paul Langevin, BP 156X, F-38042 Grenoble, France.
NR 31
TC 7
Z9 7
U1 0
U2 0
PU AMERICAN 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 OCT
PY 2004
VL 70
IS 4
AR 044610
DI 10.1103/PhysRevC.70.044610
PG 9
WC Physics, Nuclear
SC Physics
GA 870FN
UT WOS:000225043100049
ER
PT J
AU Zschiesche, D
Mishra, A
Schramm, S
Stocker, H
Greiner, W
AF Zschiesche, D
Mishra, A
Schramm, S
Stocker, H
Greiner, W
TI In-medium vector meson masses in a chiral SU(3) model
SO PHYSICAL REVIEW C
LA English
DT Article
ID QCD SUM-RULES; EFFECTIVE LAGRANGIAN APPROACH; HEAVY-ION COLLISIONS; HOT
NUCLEAR-MATTER; RHO-MESON; NONPERTURBATIVE TREATMENT;
FINITE-TEMPERATURE; SYMMETRY BREAKING; HADRONIC MATTER; AU COLLISIONS
AB A significant drop of the vector meson masses in nuclear matter is observed in a chiral SU(3) model due to the effects of the baryon Dirac sea. This is taken into account through the summation of baryonic tadpole diagrams in the relativistic Hartree approximation. The appreciable decrease of the in-medium vector meson masses is due to the vacuum polarization effects from the nucleon sector and is not observed in the mean field approximation.
C1 Inst Theoret Phys, D-60054 Frankfurt, Germany.
Indian Inst Technol, Dept Phys, New Delhi 110016, India.
Argonne Natl Lab, Argonne, IL 60439 USA.
RP Zschiesche, D (reprint author), Inst Theoret Phys, Robert Mayer Str 8-10, D-60054 Frankfurt, Germany.
EM ziesche@th.physik.uni-frankfurt.de; mishra@th.physik.uni-frankfurt.de
RI Stoecker, Horst/D-6173-2013
OI Stoecker, Horst/0000-0002-3282-3664
NR 59
TC 18
Z9 18
U1 0
U2 1
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2813
EI 1089-490X
J9 PHYS REV C
JI Phys. Rev. C
PD OCT
PY 2004
VL 70
IS 4
AR 045202
DI 10.1103/PhysRevC.70.045202
PG 13
WC Physics, Nuclear
SC Physics
GA 870FN
UT WOS:000225043100062
ER
PT J
AU Aalseth, CE
Avignone, FT
Brodzinski, RL
Cebrian, S
Garcia, E
Gonzales, D
Hensley, WK
Irastorza, IG
Kirpichnikov, IV
Klimenko, AA
Miley, HS
Morales, A
Morales, J
de Solorzano, AO
Osetrov, SB
Pogosov, VS
Puimedon, J
Reeves, JH
Sarsa, ML
Smolnikov, AA
Starostin, AS
Tamanyan, AG
Vasenko, AA
Vasiliev, SI
Villar, JA
AF Aalseth, CE
Avignone, FT
Brodzinski, RL
Cebrian, S
Garcia, E
Gonzales, D
Hensley, WK
Irastorza, IG
Kirpichnikov, IV
Klimenko, AA
Miley, HS
Morales, A
Morales, J
de Solorzano, AO
Osetrov, SB
Pogosov, VS
Puimedon, J
Reeves, JH
Sarsa, ML
Smolnikov, AA
Starostin, AS
Tamanyan, AG
Vasenko, AA
Vasiliev, SI
Villar, JA
TI The IGEX experiment reexamined: A response to the critique of
Klapdor-Kleingrothaus, Dietz, and Krivosheina
SO PHYSICAL REVIEW D
LA English
DT Article
ID DOUBLE-BETA DECAY; RANDOM-PHASE-APPROXIMATION; MATRIX-ELEMENTS; NEUTRINO
MASS; GE-76; DETECTORS
AB This paper is a response to the preceding Comment by Klapdor-Kleingrothaus, Dietz, and Krivosheina. The criticisms are confronted, and the questions raised are answered. We demonstrate that the lower limit quoted by IGEX, T-1/2(0nu)(Ge-76)greater than or equal to1.57x10(25) yr, is correct and that there was no "arithmetical error" as claimed in the "Critical View" article.
C1 Pacific NW Natl Lab, Richland, WA 99352 USA.
Univ S Carolina, Columbia, SC 29208 USA.
Univ Zaragoza, E-50009 Zaragoza, Spain.
Inst Theoret & Expt Phys, Moscow 117259, Russia.
Baksan Neutrino Observ, Nucl Res Inst, Neutrino 361309, Russia.
Yerevan Phys Inst, Yerevan 375036, Armenia.
RP Pacific NW Natl Lab, Richland, WA 99352 USA.
RI Irastorza, Igor/B-2085-2012; Sarsa Sarsa, Maria Luisa/K-6108-2014;
Villar, Jose Angel/K-6630-2014;
OI Irastorza, Igor/0000-0003-1163-1687; Sarsa Sarsa, Maria
Luisa/0000-0002-7552-1228; Villar, Jose Angel/0000-0003-0228-7589;
Garcia Abancens, Eduardo/0000-0002-9827-2332
NR 33
TC 42
Z9 42
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 OCT
PY 2004
VL 70
IS 7
AR 078302
DI 10.1103/PhysRevD.70.078302
PG 5
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 866UT
UT WOS:000224799600112
ER
PT J
AU Acosta, D
Affolder, T
Albrow, MG
Ambrose, D
Amidei, D
Anikeev, K
Antos, J
Apollinari, G
Arisawa, T
Artikov, A
Ashmanskas, W
Azfar, F
Azzi-Bacchetta, P
Bacchetta, N
Bachacou, H
Badgett, W
Barbaro-Galtieri, A
Barnes, VE
Barnett, BA
Baroiant, S
Barone, M
Bauer, G
Bedeschi, F
Behari, S
Belforte, S
Bell, WH
Bellettini, G
Bellinger, J
Benjamin, D
Beretvas, A
Bhatti, A
Binkley, M
Bisello, D
Bishai, M
Blair, RE
Blocker, C
Bloom, K
Blumenfeld, B
Bocci, A
Bodek, A
Bolla, G
Bolshov, A
Bortoletto, D
Boudreau, J
Bromberg, C
Brubaker, E
Budagov, J
Budd, HS
Burkett, K
Busetto, G
Byrum, KL
Cabrera, S
Campbell, M
Carithers, W
Carlsmith, D
Castro, A
Cauz, D
Cerri, A
Cerrito, L
Chapman, J
Chen, C
Chen, YC
Chertok, M
Chiarelli, G
Chlachidze, G
Chlebana, F
Chu, ML
Chung, JY
Chung, WH
Chung, YS
Ciobanu, CI
Clark, AG
Coca, M
Connolly, A
Convery, M
Conway, J
Cordelli, M
Cranshaw, J
Culbertson, R
Dagenhart, D
D'Auria, S
de Barbaro, P
De Cecco, S
Dell'Agnello, S
Dell'Orso, M
Demers, S
Demortier, L
Deninno, M
De Pedis, D
Derwent, PF
Dionisi, C
Dittmann, JR
Dominguez, A
Donati, S
D'Onofrio, M
Dorigo, T
Eddy, N
Erbacher, R
Errede, D
Errede, S
Eusebi, R
Farrington, S
Feild, RG
Fernandez, JP
Ferretti, C
Field, RD
Fiori, I
Flaugher, B
Flores-Castillo, LR
Foster, GW
Franklin, M
Friedman, J
Furic, I
Gallinaro, M
Garcia-Sciveres, M
Garfinkel, AF
Gay, C
Gerdes, DW
Gerstein, E
Giagu, S
Giannetti, P
Giolo, K
Giordani, M
Giromini, P
Glagolev, V
Glenzinski, D
Gold, M
Goldschmidt, N
Goldstein, J
Gomez, G
Goncharov, M
Gorelov, I
Goshaw, AT
Gotra, Y
Goulianos, K
Gresele, A
Grosso-Pilcher, C
Guenther, M
da Costa, JG
Haber, C
Hahn, SR
Halkiadakis, E
Hall, C
Handler, R
Happacher, F
Hara, K
Harris, RM
Hartmann, F
Hatakeyama, K
Hauser, J
Heinrich, J
Hennecke, M
Herndon, M
Hill, C
Hocker, A
Hoffman, KD
Hou, S
Huffman, BT
Hughes, R
Huston, J
Issever, C
Incandela, J
Introzzi, G
Iori, M
Ivanov, A
Iwata, Y
Iyutin, B
James, E
Jones, M
Kamon, T
Kang, J
Unel, MK
Kartal, S
Kasha, H
Kato, Y
Kennedy, RD
Kephart, R
Kilminster, B
Kim, DH
Kim, HS
Kim, MJ
Kim, SB
Kim, SH
Kim, TH
Kim, YK
Kirby, M
Kirsch, L
Klimenko, S
Koehn, P
Kondo, K
Konigsberg, J
Korn, A
Korytov, A
Kroll, J
Kruse, M
Krutelyov, V
Kuhlmann, SE
Kuznetsova, N
Laasanen, AT
Lami, S
Lammel, S
Lancaster, J
Lannon, K
Lancaster, M
Lander, R
Lath, A
Latino, G
LeCompte, T
Le, Y
Lee, J
Lee, SW
Leonardo, N
Leone, S
Lewis, JD
Li, K
Lin, CS
Lindgren, M
Liss, TM
Liu, T
Litvintsev, DO
Lockyer, NS
Loginov, A
Loreti, M
Lucchesi, D
Lukens, P
Lyons, L
Lys, J
Madrak, R
Maeshima, K
Maksimovic, P
Malferrari, L
Mangano, M
Manca, G
Mariotti, M
Martin, M
Martin, A
Martin, V
Martinez, M
Mazzanti, P
McFarland, KS
McIntyre, P
Menguzzato, M
Menzione, A
Merkel, P
Mesropian, C
Meyer, A
Miao, T
Miller, R
Miller, JS
Miscetti, S
Mitselmakher, G
Moggi, N
Moore, R
Moulik, T
Mulhearn, M
Mukherjee, A
Muller, T
Munar, A
Murat, P
Nachtman, J
Nahn, S
Nakano, I
Napora, R
Niell, F
Nelson, C
Nelson, T
Neu, C
Neubauer, MS
Newman-Holmes, C
Nigmanov, T
Nodulman, L
Oh, SH
Oh, YD
Ohsugi, T
Okusawa, T
Orejudos, W
Pagliarone, C
Palmonari, F
Paoletti, R
Papadimitriou, V
Patrick, J
Pauletta, G
Paulini, M
Pauly, T
Paus, C
Pellett, D
Penzo, A
Phillips, TJ
Piacentino, G
Piedra, J
Pitts, KT
Pompos, A
Pondrom, L
Pope, G
Pratt, T
Prokoshin, F
Proudfoot, J
Ptohos, F
Poukhov, O
Punzi, G
Rademacker, J
Rakitine, A
Ratnikov, F
Ray, H
Reichold, A
Renton, P
Rescigno, M
Rimondi, F
Ristori, L
Robertson, WJ
Rodrigo, T
Rolli, S
Rosenson, L
Roser, R
Rossin, R
Rott, C
Roy, A
Ruiz, A
Ryan, D
Safonov, A
St Denis, R
Sakumoto, WK
Saltzberg, D
Sanchez, C
Sansoni, A
Santi, L
Sarkar, S
Savard, P
Savoy-Navarro, A
Schlabach, P
Schmidt, EE
Schmidt, MP
Schmitt, M
Scodellaro, L
Scribano, A
Sedov, A
Seidel, S
Seiya, Y
Semenov, A
Semeria, F
Shapiro, MD
Shepard, PF
Shibayama, T
Shimojima, M
Shochet, M
Sidoti, A
Sill, A
Sinervo, P
Slaughter, AJ
Sliwa, K
Snider, FD
Snihur, R
Spezziga, M
Spinella, F
Spiropulu, M
Spiegel, L
Stefanini, A
Strologas, J
Stuart, D
Sukhanov, A
Sumorok, K
Suzuki, T
Takashima, R
Takikawa, K
Tanaka, M
Tecchio, M
Tesarek, RJ
Teng, PK
Terashi, K
Tether, S
Thom, J
Thompson, AS
Thomson, E
Tipton, P
Tkaczyk, S
Toback, D
Tollefson, K
Tonelli, D
Tonnesmann, M
Toyoda, H
Trischuk, W
Tseng, J
Tsybychev, D
Turini, N
Ukegawa, F
Unverhau, T
Vaiciulis, T
Varganov, A
Vataga, E
Vejcik, S
Velev, G
Veramendi, G
Vidal, R
Vila, I
Vilar, R
Volobouev, I
von der Mey, M
Wagner, RG
Wagner, RL
Wagner, W
Wan, Z
Wang, C
Wang, MJ
Wang, SM
Ward, B
Waschke, S
Waters, D
Watts, T
Weber, M
Wester, WC
Whitehouse, B
Wicklund, AB
Wicklund, E
Williams, HH
Wilson, P
Winer, BL
Wolbers, S
Wolter, M
Worm, S
Wu, X
Wurthwein, F
Yang, UK
Yao, W
Yeh, GP
Yi, K
Yoh, J
Yoshida, T
Yu, I
Yu, S
Yun, JC
Zanello, L
Zanetti, A
Zetti, F
Zucchelli, S
AF Acosta, D
Affolder, T
Albrow, MG
Ambrose, D
Amidei, D
Anikeev, K
Antos, J
Apollinari, G
Arisawa, T
Artikov, A
Ashmanskas, W
Azfar, F
Azzi-Bacchetta, P
Bacchetta, N
Bachacou, H
Badgett, W
Barbaro-Galtieri, A
Barnes, VE
Barnett, BA
Baroiant, S
Barone, M
Bauer, G
Bedeschi, F
Behari, S
Belforte, S
Bell, WH
Bellettini, G
Bellinger, J
Benjamin, D
Beretvas, A
Bhatti, A
Binkley, M
Bisello, D
Bishai, M
Blair, RE
Blocker, C
Bloom, K
Blumenfeld, B
Bocci, A
Bodek, A
Bolla, G
Bolshov, A
Bortoletto, D
Boudreau, J
Bromberg, C
Brubaker, E
Budagov, J
Budd, HS
Burkett, K
Busetto, G
Byrum, KL
Cabrera, S
Campbell, M
Carithers, W
Carlsmith, D
Castro, A
Cauz, D
Cerri, A
Cerrito, L
Chapman, J
Chen, C
Chen, YC
Chertok, M
Chiarelli, G
Chlachidze, G
Chlebana, F
Chu, ML
Chung, JY
Chung, WH
Chung, YS
Ciobanu, CI
Clark, AG
Coca, M
Connolly, A
Convery, M
Conway, J
Cordelli, M
Cranshaw, J
Culbertson, R
Dagenhart, D
D'Auria, S
de Barbaro, P
De Cecco, S
Dell'Agnello, S
Dell'Orso, M
Demers, S
Demortier, L
Deninno, M
De Pedis, D
Derwent, PF
Dionisi, C
Dittmann, JR
Dominguez, A
Donati, S
D'Onofrio, M
Dorigo, T
Eddy, N
Erbacher, R
Errede, D
Errede, S
Eusebi, R
Farrington, S
Feild, RG
Fernandez, JP
Ferretti, C
Field, RD
Fiori, I
Flaugher, B
Flores-Castillo, LR
Foster, GW
Franklin, M
Friedman, J
Furic, I
Gallinaro, M
Garcia-Sciveres, M
Garfinkel, AF
Gay, C
Gerdes, DW
Gerstein, E
Giagu, S
Giannetti, P
Giolo, K
Giordani, M
Giromini, P
Glagolev, V
Glenzinski, D
Gold, M
Goldschmidt, N
Goldstein, J
Gomez, G
Goncharov, M
Gorelov, I
Goshaw, AT
Gotra, Y
Goulianos, K
Gresele, A
Grosso-Pilcher, C
Guenther, M
da Costa, JG
Haber, C
Hahn, SR
Halkiadakis, E
Hall, C
Handler, R
Happacher, F
Hara, K
Harris, RM
Hartmann, F
Hatakeyama, K
Hauser, J
Heinrich, J
Hennecke, M
Herndon, M
Hill, C
Hocker, A
Hoffman, KD
Hou, S
Huffman, BT
Hughes, R
Huston, J
Issever, C
Incandela, J
Introzzi, G
Iori, M
Ivanov, A
Iwata, Y
Iyutin, B
James, E
Jones, M
Kamon, T
Kang, J
Unel, MK
Kartal, S
Kasha, H
Kato, Y
Kennedy, RD
Kephart, R
Kilminster, B
Kim, DH
Kim, HS
Kim, MJ
Kim, SB
Kim, SH
Kim, TH
Kim, YK
Kirby, M
Kirsch, L
Klimenko, S
Koehn, P
Kondo, K
Konigsberg, J
Korn, A
Korytov, A
Kroll, J
Kruse, M
Krutelyov, V
Kuhlmann, SE
Kuznetsova, N
Laasanen, AT
Lami, S
Lammel, S
Lancaster, J
Lannon, K
Lancaster, M
Lander, R
Lath, A
Latino, G
LeCompte, T
Le, Y
Lee, J
Lee, SW
Leonardo, N
Leone, S
Lewis, JD
Li, K
Lin, CS
Lindgren, M
Liss, TM
Liu, T
Litvintsev, DO
Lockyer, NS
Loginov, A
Loreti, M
Lucchesi, D
Lukens, P
Lyons, L
Lys, J
Madrak, R
Maeshima, K
Maksimovic, P
Malferrari, L
Mangano, M
Manca, G
Mariotti, M
Martin, M
Martin, A
Martin, V
Martinez, M
Mazzanti, P
McFarland, KS
McIntyre, P
Menguzzato, M
Menzione, A
Merkel, P
Mesropian, C
Meyer, A
Miao, T
Miller, R
Miller, JS
Miscetti, S
Mitselmakher, G
Moggi, N
Moore, R
Moulik, T
Mulhearn, M
Mukherjee, A
Muller, T
Munar, A
Murat, P
Nachtman, J
Nahn, S
Nakano, I
Napora, R
Niell, F
Nelson, C
Nelson, T
Neu, C
Neubauer, MS
Newman-Holmes, C
Nigmanov, T
Nodulman, L
Oh, SH
Oh, YD
Ohsugi, T
Okusawa, T
Orejudos, W
Pagliarone, C
Palmonari, F
Paoletti, R
Papadimitriou, V
Patrick, J
Pauletta, G
Paulini, M
Pauly, T
Paus, C
Pellett, D
Penzo, A
Phillips, TJ
Piacentino, G
Piedra, J
Pitts, KT
Pompos, A
Pondrom, L
Pope, G
Pratt, T
Prokoshin, F
Proudfoot, J
Ptohos, F
Poukhov, O
Punzi, G
Rademacker, J
Rakitine, A
Ratnikov, F
Ray, H
Reichold, A
Renton, P
Rescigno, M
Rimondi, F
Ristori, L
Robertson, WJ
Rodrigo, T
Rolli, S
Rosenson, L
Roser, R
Rossin, R
Rott, C
Roy, A
Ruiz, A
Ryan, D
Safonov, A
St Denis, R
Sakumoto, WK
Saltzberg, D
Sanchez, C
Sansoni, A
Santi, L
Sarkar, S
Savard, P
Savoy-Navarro, A
Schlabach, P
Schmidt, EE
Schmidt, MP
Schmitt, M
Scodellaro, L
Scribano, A
Sedov, A
Seidel, S
Seiya, Y
Semenov, A
Semeria, F
Shapiro, MD
Shepard, PF
Shibayama, T
Shimojima, M
Shochet, M
Sidoti, A
Sill, A
Sinervo, P
Slaughter, AJ
Sliwa, K
Snider, FD
Snihur, R
Spezziga, M
Spinella, F
Spiropulu, M
Spiegel, L
Stefanini, A
Strologas, J
Stuart, D
Sukhanov, A
Sumorok, K
Suzuki, T
Takashima, R
Takikawa, K
Tanaka, M
Tecchio, M
Tesarek, RJ
Teng, PK
Terashi, K
Tether, S
Thom, J
Thompson, AS
Thomson, E
Tipton, P
Tkaczyk, S
Toback, D
Tollefson, K
Tonelli, D
Tonnesmann, M
Toyoda, H
Trischuk, W
Tseng, J
Tsybychev, D
Turini, N
Ukegawa, F
Unverhau, T
Vaiciulis, T
Varganov, A
Vataga, E
Vejcik, S
Velev, G
Veramendi, G
Vidal, R
Vila, I
Vilar, R
Volobouev, I
von der Mey, M
Wagner, RG
Wagner, RL
Wagner, W
Wan, Z
Wang, C
Wang, MJ
Wang, SM
Ward, B
Waschke, S
Waters, D
Watts, T
Weber, M
Wester, WC
Whitehouse, B
Wicklund, AB
Wicklund, E
Williams, HH
Wilson, P
Winer, BL
Wolbers, S
Wolter, M
Worm, S
Wu, X
Wurthwein, F
Yang, UK
Yao, W
Yeh, GP
Yi, K
Yoh, J
Yoshida, T
Yu, I
Yu, S
Yun, JC
Zanello, L
Zanetti, A
Zetti, F
Zucchelli, S
CA CDF Collaboration
TI Direct photon cross section with conversions at CDF
SO PHYSICAL REVIEW D
LA English
DT Article
AB We present a measurement of the isolated direct photon cross section in p (p) over bar collisions at roots=1.8 TeV and \eta\<0.9 using data collected between 1994 and 1995 by the Collider Detector at Fermilab (CDF). The measurement is based on events where the photon converts into an electron-positron pair in the material of the inner detector, resulting in a two track event signature. To remove pi(0)-->gammagamma and eta-->gammagamma events from the data we use a new background subtraction technique which takes advantage of the tracking information available in a photon conversion event. We find that the shape of the cross section as a function of photon p(T) is poorly described by next-to-leading-order QCD predictions, but agrees with previous CDF measurements.
C1 Univ Florida, Gainesville, FL 32611 USA.
Acad Sinica, Inst Phys, Taipei 11529, Taiwan.
Argonne Natl Lab, Argonne, IL 60439 USA.
Univ Bologna, Ist Nazl Fis Nucl, I-40127 Bologna, Italy.
Brandeis Univ, Waltham, MA 02254 USA.
Univ Calif Davis, Davis, CA 95616 USA.
Univ Calif Los Angeles, Los Angeles, CA 90024 USA.
Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
Univ Cantabria, Inst Fis Cantabria, CSIC, E-39005 Santander, Spain.
Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
Joint Inst Nucl Res, RU-141980 Dubna, Russia.
Duke Univ, Durham, NC 27708 USA.
Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
Univ Florida, Gainesville, FL 32611 USA.
Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
Univ Geneva, CH-1211 Geneva 4, Switzerland.
Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland.
Harvard Univ, Cambridge, MA 02138 USA.
Hiroshima Univ, Higashihiroshima 724, Japan.
Univ Illinois, Urbana, IL 61801 USA.
Johns Hopkins Univ, Baltimore, MD 21218 USA.
Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany.
Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea.
Seoul Natl Univ, Seoul 151742, South Korea.
Sungkyunkwan Univ, Suwon 440746, South Korea.
Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
UCL, London WC1E 6BT, England.
MIT, Cambridge, MA 02139 USA.
Univ Michigan, Ann Arbor, MI 48109 USA.
Michigan State Univ, E Lansing, MI 48824 USA.
Inst Theoret & Expt Phys, Moscow 117259, Russia.
Univ New Mexico, Albuquerque, NM 87131 USA.
Northwestern Univ, Evanston, IL 60208 USA.
Ohio State Univ, Columbus, OH 43210 USA.
Osaka City Univ, Osaka 588, Japan.
Univ Oxford, Oxford OX1 3RH, England.
Univ Padua, Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.
Univ Penn, Philadelphia, PA 19104 USA.
Univ & Scuola Normale Super Pisa, Ist Nazl Fis Nucl, I-56100 Pisa, Italy.
Univ Pittsburgh, Pittsburgh, PA 15260 USA.
Purdue Univ, W Lafayette, IN 47907 USA.
Univ Rochester, Rochester, NY 14627 USA.
Rockefeller Univ, New York, NY 10021 USA.
Univ Rome 1 La Sapienza, Inst Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy.
Rutgers State Univ, Piscataway, NJ 08855 USA.
Texas A&M Univ, College Stn, TX 77843 USA.
Texas Tech Univ, Lubbock, TX 79409 USA.
Univ Toronto, Inst Particle Phys, Toronto, ON M5S 1A7, Canada.
Univ Trieste, Ist Nazl Fis Nucl, Udine, Italy.
Univ Tsukuba, Tsukuba, Ibaraki 305, Japan.
Tufts Univ, Medford, MA 02155 USA.
Waseda Univ, Tokyo 169, Japan.
Univ Wisconsin, Madison, WI 53706 USA.
Yale Univ, New Haven, CT 06520 USA.
RP Univ Florida, Gainesville, FL 32611 USA.
RI Lancaster, Mark/C-1693-2008; Ruiz, Alberto/E-4473-2011; De Cecco,
Sandro/B-1016-2012; Wolter, Marcin/A-7412-2012; St.Denis,
Richard/C-8997-2012; Azzi, Patrizia/H-5404-2012; manca,
giulia/I-9264-2012; Punzi, Giovanni/J-4947-2012; Chiarelli,
Giorgio/E-8953-2012; Ivanov, Andrew/A-7982-2013; Kim,
Soo-Bong/B-7061-2014; Scodellaro, Luca/K-9091-2014; Connolly,
Amy/J-3958-2013; Paulini, Manfred/N-7794-2014; Cabrera Urban,
Susana/H-1376-2015; Introzzi, Gianluca/K-2497-2015; Gorelov,
Igor/J-9010-2015; Prokoshin, Fedor/E-2795-2012; Leonardo,
Nuno/M-6940-2016;
OI Ruiz, Alberto/0000-0002-3639-0368; Azzi, Patrizia/0000-0002-3129-828X;
Punzi, Giovanni/0000-0002-8346-9052; Chiarelli,
Giorgio/0000-0001-9851-4816; Ivanov, Andrew/0000-0002-9270-5643;
Scodellaro, Luca/0000-0002-4974-8330; Paulini,
Manfred/0000-0002-6714-5787; Introzzi, Gianluca/0000-0002-1314-2580;
Gorelov, Igor/0000-0001-5570-0133; Prokoshin, Fedor/0000-0001-6389-5399;
Leonardo, Nuno/0000-0002-9746-4594; Lami, Stefano/0000-0001-9492-0147;
Giordani, Mario/0000-0002-0792-6039; Latino,
Giuseppe/0000-0002-4098-3502; iori, maurizio/0000-0002-6349-0380;
Lancaster, Mark/0000-0002-8872-7292; Toback, David/0000-0003-3457-4144;
MARTINEZ, MARIO/0000-0002-3135-945X; Farrington,
Sinead/0000-0001-5350-9271; Gallinaro, Michele/0000-0003-1261-2277;
Turini, Nicola/0000-0002-9395-5230; Goldstein, Joel/0000-0003-1591-6014
NR 14
TC 18
Z9 18
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 OCT
PY 2004
VL 70
IS 7
AR 074008
DI 10.1103/PhysRevD.70.074008
PG 12
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 866UT
UT WOS:000224799600033
ER
PT J
AU Acosta, D
Affolder, T
Albrow, MG
Ambrose, D
Amidei, D
Anikeev, K
Antos, J
Apollinari, G
Arisawa, T
Artikov, A
Ashmanskas, W
Azfar, F
Azzi-Bacchetta, P
Bacchetta, N
Bachacou, H
Badgett, W
Barbaro-Galtieri, A
Barnes, VE
Barnett, BA
Baroiant, S
Barone, M
Bauer, G
Bedeschi, F
Behari, S
Belforte, S
Bell, WH
Bellettini, G
Bellinger, J
Benjamin, D
Beretvas, A
Bhatti, A
Binkley, M
Bisello, D
Bishai, M
Blair, RE
Blocker, C
Bloom, K
Blumenfeld, B
Bocci, A
Bodek, A
Bolla, G
Bolshov, A
Bortoletto, D
Boudreau, J
Bromberg, C
Brubaker, E
Budagov, J
Budd, HS
Burkett, K
Busetto, G
Byrum, KL
Cabrera, S
Campbell, M
Carithers, W
Carlsmith, D
Castro, A
Cauz, D
Cerri, A
Cerrito, L
Chapman, J
Chen, C
Chen, YC
Chertok, M
Chiarelli, G
Chlachidze, G
Chlebana, F
Chu, ML
Chung, JY
Chung, WH
Chung, YS
Ciobanu, CI
Clark, AG
Coca, M
Connolly, A
Convery, M
Conway, J
Cordelli, M
Cranshaw, J
Culbertson, R
Dagenhart, D
D'Auria, S
de Barbaro, P
De Cecco, S
Dell'Agnello, S
Dell'Orso, M
Demers, S
Demortier, L
Deninno, M
De Pedis, D
Derwent, PF
Dionisi, C
Dittmann, JR
Dominguez, A
Donati, S
D'Onofrio, M
Dorigo, T
Eddy, N
Erbacher, R
Errede, D
Errede, S
Eusebi, R
Farrington, S
Feild, RG
Fernandez, JP
Ferretti, C
Field, RD
Fiori, I
Flaugher, B
Flores-Castillo, LR
Foster, GW
Franklin, M
Friedman, J
Furic, I
Gallinaro, M
Garcia-Sciveres, M
Garfinkel, AF
Gay, C
Gerdes, DW
Gerstein, E
Giagu, S
Giannetti, P
Giolo, K
Giordani, M
Giromini, P
Glagolev, V
Glenzinski, D
Gold, M
Goldschmidt, N
Goldstein, J
Gomez, G
Goncharov, M
Gorelov, I
Goshaw, AT
Gotra, Y
Goulianos, K
Gresele, A
Grosso-Pilcher, C
Guenther, M
da Costa, JG
Haber, C
Hahn, SR
Halkiadakis, E
Handler, R
Happacher, F
Hara, K
Harris, RM
Hartmann, F
Hatakeyama, K
Hauser, J
Heinrich, J
Hennecke, M
Herndon, M
Hill, C
Hocker, A
Hoffman, KD
Hou, S
Huffman, BT
Hughes, R
Huston, J
Issever, C
Incandela, J
Introzzi, G
Iori, M
Ivanov, A
Iwata, Y
Iyutin, B
James, E
Jones, M
Kamon, T
Kang, J
Unel, MK
Kartal, S
Kasha, H
Kato, Y
Kennedy, RD
Kephart, R
Kilminster, B
Kim, DH
Kim, HS
Kim, MJ
Kim, SB
Kim, SH
Kim, TH
Kim, YK
Kirby, M
Kirsch, L
Klimenko, S
Koehn, P
Kondo, K
Konigsberg, J
Korn, A
Korytov, A
Kroll, J
Kruse, M
Krutelyov, V
Kuhlmann, SE
Kuznetsova, N
Laasanen, AT
Lami, S
Lammel, S
Lancaster, J
Lannon, K
Lancaster, M
Lander, R
Lath, A
Latino, G
LeCompte, T
Le, Y
Lee, J
Lee, SW
Leonardo, N
Leone, S
Lewis, JD
Li, K
Lin, CS
Lindgren, M
Liss, TM
Liu, T
Litvintsev, DO
Lockyer, NS
Loginov, A
Loreti, M
Lucchesi, D
Lukens, P
Lyons, L
Lys, J
Madrak, R
Maeshima, K
Maksimovic, P
Malferrari, L
Mangano, M
Manca, G
Mariotti, M
Martin, M
Martin, A
Martin, V
Martinez, M
Mazzanti, P
McFarland, KS
McIntyre, P
Menguzzato, M
Menzione, A
Merkel, P
Mesropian, C
Meyer, A
Miao, T
Miller, R
Miller, JS
Miscetti, S
Mitselmakher, G
Moggi, N
Moore, R
Moulik, T
Mulhearn, M
Mukherjee, A
Muller, T
Munar, A
Murat, P
Nachtman, J
Nahn, S
Nakano, I
Napora, R
Niell, F
Nelson, C
Nelson, T
Neu, C
Neubauer, MS
Newman-Holmes, C
Nigmanov, T
Nodulman, L
Oh, SH
Oh, YD
Ohsugi, T
Okusawa, T
Orejudos, W
Pagliarone, C
Palmonari, F
Paoletti, R
Papadimitriou, V
Patrick, J
Pauletta, G
Paulini, M
Pauly, T
Paus, C
Pellett, D
Penzo, A
Phillips, TJ
Piacentino, G
Piedra, J
Pitts, KT
Pompos, A
Pondrom, L
Pope, G
Pratt, T
Prokoshin, F
Proudfoot, J
Ptohos, F
Poukhov, O
Punzi, G
Rademacker, J
Rakitine, A
Ratnikov, F
Ray, H
Reichold, A
Renton, P
Rescigno, M
Rimondi, F
Ristori, L
Robertson, WJ
Rodrigo, T
Rolli, S
Rosenson, L
Roser, R
Rossin, R
Rott, C
Roy, A
Ruiz, A
Ryan, D
Safonov, A
St Denis, R
Sakumoto, WK
Saltzberg, D
Sanchez, C
Sansoni, A
Santi, L
Sarkar, S
Savard, P
Savoy-Navarro, A
Schlabach, P
Schmidt, EE
Schmidt, MP
Schmitt, M
Scodellaro, L
Scribano, A
Sefov, A
Seidel, S
Seiya, Y
Semenov, A
Semeria, F
Shapiro, MD
Shepard, PF
Shibayama, T
Shimojima, M
Shochet, M
Sidoti, A
Sill, A
Sinervo, P
Slaughter, AJ
Sliwa, K
Snider, FD
Snihur, R
Spezziga, M
Spinella, F
Spiropulu, M
Spiegel, L
Stefanini, A
Strologas, J
Stuart, D
Sukhanov, A
Sumorok, K
Suzuki, T
Takashima, R
Takikawa, K
Tanaka, M
Tano, V
Tecchio, M
Tesarek, RJ
Teng, PK
Terashi, K
Tether, S
Thom, J
Thompson, AS
Thomson, E
Tipton, P
Tkaczyk, S
Toback, D
Tollefson, K
Tonelli, D
Tonnesmann, M
Toyoda, H
Trischuk, W
Tseng, J
Tsybychev, D
Turini, N
Ukegawa, F
Unverhau, T
Vaiciulis, T
Varganov, A
Vataga, E
Vejcik, S
Velev, G
Veramendi, G
Vidal, R
Vila, I
Vilar, R
Volobouev, I
von der Mey, M
Wagner, RG
Wagner, RL
Wagner, W
Wan, Z
Wang, C
Wang, MJ
Wang, SM
Ward, B
Waschke, S
Waters, D
Watts, T
Weber, M
Wester, WC
Whitehouse, B
Wicklund, AB
Wicklund, E
Williams, HH
Wilson, P
Winer, BL
Wolbers, S
Wolter, M
Worm, S
Wu, X
Wurthwein, F
Yang, UK
Yao, W
Yeh, GP
Yi, K
Yoh, J
Yoshida, T
Yu, I
Yu, S
Yun, JC
Zanello, L
Zanetti, A
Zetti, F
Zucchelli, S
AF Acosta, D
Affolder, T
Albrow, MG
Ambrose, D
Amidei, D
Anikeev, K
Antos, J
Apollinari, G
Arisawa, T
Artikov, A
Ashmanskas, W
Azfar, F
Azzi-Bacchetta, P
Bacchetta, N
Bachacou, H
Badgett, W
Barbaro-Galtieri, A
Barnes, VE
Barnett, BA
Baroiant, S
Barone, M
Bauer, G
Bedeschi, F
Behari, S
Belforte, S
Bell, WH
Bellettini, G
Bellinger, J
Benjamin, D
Beretvas, A
Bhatti, A
Binkley, M
Bisello, D
Bishai, M
Blair, RE
Blocker, C
Bloom, K
Blumenfeld, B
Bocci, A
Bodek, A
Bolla, G
Bolshov, A
Bortoletto, D
Boudreau, J
Bromberg, C
Brubaker, E
Budagov, J
Budd, HS
Burkett, K
Busetto, G
Byrum, KL
Cabrera, S
Campbell, M
Carithers, W
Carlsmith, D
Castro, A
Cauz, D
Cerri, A
Cerrito, L
Chapman, J
Chen, C
Chen, YC
Chertok, M
Chiarelli, G
Chlachidze, G
Chlebana, F
Chu, ML
Chung, JY
Chung, WH
Chung, YS
Ciobanu, CI
Clark, AG
Coca, M
Connolly, A
Convery, M
Conway, J
Cordelli, M
Cranshaw, J
Culbertson, R
Dagenhart, D
D'Auria, S
de Barbaro, P
De Cecco, S
Dell'Agnello, S
Dell'Orso, M
Demers, S
Demortier, L
Deninno, M
De Pedis, D
Derwent, PF
Dionisi, C
Dittmann, JR
Dominguez, A
Donati, S
D'Onofrio, M
Dorigo, T
Eddy, N
Erbacher, R
Errede, D
Errede, S
Eusebi, R
Farrington, S
Feild, RG
Fernandez, JP
Ferretti, C
Field, RD
Fiori, I
Flaugher, B
Flores-Castillo, LR
Foster, GW
Franklin, M
Friedman, J
Furic, I
Gallinaro, M
Garcia-Sciveres, M
Garfinkel, AF
Gay, C
Gerdes, DW
Gerstein, E
Giagu, S
Giannetti, P
Giolo, K
Giordani, M
Giromini, P
Glagolev, V
Glenzinski, D
Gold, M
Goldschmidt, N
Goldstein, J
Gomez, G
Goncharov, M
Gorelov, I
Goshaw, AT
Gotra, Y
Goulianos, K
Gresele, A
Grosso-Pilcher, C
Guenther, M
da Costa, JG
Haber, C
Hahn, SR
Halkiadakis, E
Handler, R
Happacher, F
Hara, K
Harris, RM
Hartmann, F
Hatakeyama, K
Hauser, J
Heinrich, J
Hennecke, M
Herndon, M
Hill, C
Hocker, A
Hoffman, KD
Hou, S
Huffman, BT
Hughes, R
Huston, J
Issever, C
Incandela, J
Introzzi, G
Iori, M
Ivanov, A
Iwata, Y
Iyutin, B
James, E
Jones, M
Kamon, T
Kang, J
Unel, MK
Kartal, S
Kasha, H
Kato, Y
Kennedy, RD
Kephart, R
Kilminster, B
Kim, DH
Kim, HS
Kim, MJ
Kim, SB
Kim, SH
Kim, TH
Kim, YK
Kirby, M
Kirsch, L
Klimenko, S
Koehn, P
Kondo, K
Konigsberg, J
Korn, A
Korytov, A
Kroll, J
Kruse, M
Krutelyov, V
Kuhlmann, SE
Kuznetsova, N
Laasanen, AT
Lami, S
Lammel, S
Lancaster, J
Lannon, K
Lancaster, M
Lander, R
Lath, A
Latino, G
LeCompte, T
Le, Y
Lee, J
Lee, SW
Leonardo, N
Leone, S
Lewis, JD
Li, K
Lin, CS
Lindgren, M
Liss, TM
Liu, T
Litvintsev, DO
Lockyer, NS
Loginov, A
Loreti, M
Lucchesi, D
Lukens, P
Lyons, L
Lys, J
Madrak, R
Maeshima, K
Maksimovic, P
Malferrari, L
Mangano, M
Manca, G
Mariotti, M
Martin, M
Martin, A
Martin, V
Martinez, M
Mazzanti, P
McFarland, KS
McIntyre, P
Menguzzato, M
Menzione, A
Merkel, P
Mesropian, C
Meyer, A
Miao, T
Miller, R
Miller, JS
Miscetti, S
Mitselmakher, G
Moggi, N
Moore, R
Moulik, T
Mulhearn, M
Mukherjee, A
Muller, T
Munar, A
Murat, P
Nachtman, J
Nahn, S
Nakano, I
Napora, R
Niell, F
Nelson, C
Nelson, T
Neu, C
Neubauer, MS
Newman-Holmes, C
Nigmanov, T
Nodulman, L
Oh, SH
Oh, YD
Ohsugi, T
Okusawa, T
Orejudos, W
Pagliarone, C
Palmonari, F
Paoletti, R
Papadimitriou, V
Patrick, J
Pauletta, G
Paulini, M
Pauly, T
Paus, C
Pellett, D
Penzo, A
Phillips, TJ
Piacentino, G
Piedra, J
Pitts, KT
Pompos, A
Pondrom, L
Pope, G
Pratt, T
Prokoshin, F
Proudfoot, J
Ptohos, F
Poukhov, O
Punzi, G
Rademacker, J
Rakitine, A
Ratnikov, F
Ray, H
Reichold, A
Renton, P
Rescigno, M
Rimondi, F
Ristori, L
Robertson, WJ
Rodrigo, T
Rolli, S
Rosenson, L
Roser, R
Rossin, R
Rott, C
Roy, A
Ruiz, A
Ryan, D
Safonov, A
St Denis, R
Sakumoto, WK
Saltzberg, D
Sanchez, C
Sansoni, A
Santi, L
Sarkar, S
Savard, P
Savoy-Navarro, A
Schlabach, P
Schmidt, EE
Schmidt, MP
Schmitt, M
Scodellaro, L
Scribano, A
Sefov, A
Seidel, S
Seiya, Y
Semenov, A
Semeria, F
Shapiro, MD
Shepard, PF
Shibayama, T
Shimojima, M
Shochet, M
Sidoti, A
Sill, A
Sinervo, P
Slaughter, AJ
Sliwa, K
Snider, FD
Snihur, R
Spezziga, M
Spinella, F
Spiropulu, M
Spiegel, L
Stefanini, A
Strologas, J
Stuart, D
Sukhanov, A
Sumorok, K
Suzuki, T
Takashima, R
Takikawa, K
Tanaka, M
Tano, V
Tecchio, M
Tesarek, RJ
Teng, PK
Terashi, K
Tether, S
Thom, J
Thompson, AS
Thomson, E
Tipton, P
Tkaczyk, S
Toback, D
Tollefson, K
Tonelli, D
Tonnesmann, M
Toyoda, H
Trischuk, W
Tseng, J
Tsybychev, D
Turini, N
Ukegawa, F
Unverhau, T
Vaiciulis, T
Varganov, A
Vataga, E
Vejcik, S
Velev, G
Veramendi, G
Vidal, R
Vila, I
Vilar, R
Volobouev, I
von der Mey, M
Wagner, RG
Wagner, RL
Wagner, W
Wan, Z
Wang, C
Wang, MJ
Wang, SM
Ward, B
Waschke, S
Waters, D
Watts, T
Weber, M
Wester, WC
Whitehouse, B
Wicklund, AB
Wicklund, E
Williams, HH
Wilson, P
Winer, BL
Wolbers, S
Wolter, M
Worm, S
Wu, X
Wurthwein, F
Yang, UK
Yao, W
Yeh, GP
Yi, K
Yoh, J
Yoshida, T
Yu, I
Yu, S
Yun, JC
Zanello, L
Zanetti, A
Zetti, F
Zucchelli, S
CA CDF Collaboration
TI Underlying event in hard interactions at the Fermilab Tevatron
p(p)over-barp collider
SO PHYSICAL REVIEW D
LA English
DT Article
ID ENERGY
AB For comparison of inclusive jet cross sections measured at hadron-hadron colliders to next-to-leading order (NLO) parton-level calculations, the energy deposited in the jet cone by spectator parton interactions must first be subtracted. The assumption made at the Tevatron is that the spectator parton interaction energy is similar to the ambient level measured in minimum bias events. In this paper, we test this assumption by measuring the ambient charged track momentum in events containing large transverse energy jets at roots=1800 GeV and roots=630 GeV and comparing this ambient momentum with that observed both in minimum bias events and with that predicted by two Monte Carlo models. Two cones in eta-phi space are defined, at the same pseudorapidity, eta, as the jet with the highest transverse energy (E-T((1))), and at +/-90(o) in the azimuthal direction, phi. The total charged track momentum inside each of the two cones is measured. The minimum momentum in the two cones is almost independent of E-T((1)) and is similar to the momentum observed in minimum bias events, whereas the maximum momentum increases roughly linearly with the jet E-T((1)) over most of the measured range. This study was carried out using data from the CDF detector taken during Run 1 (1994-1995). The study will help improve the precision of comparisons of jet cross section data and NLO perturbative QCD predictions. The distribution of the sum of the track momenta in the two cones is also examined for five different E-T((1)) bins. The HERWIG and PYTHIA Monte Carlo generators are reasonably successful in describing the data, but neither can describe completely all of the event properties.
C1 Univ Florida, Gainesville, FL 32611 USA.
Acad Sinica, Inst Phys, Taipei 11529, Taiwan.
Argonne Natl Lab, Argonne, IL 60439 USA.
Univ Bologna, Ist Nazl Fis Nucl, I-40127 Bologna, Italy.
Brandeis Univ, Waltham, MA 02254 USA.
Univ Calif Davis, Davis, CA 95616 USA.
Univ Calif Los Angeles, Los Angeles, CA 90024 USA.
Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
Univ Cantabria, CSIC, Inst Fis Cantabria, E-39005 Santander, Spain.
Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
Joint Inst Nucl Res, RU-141980 Dubna, Russia.
Duke Univ, Durham, NC 27708 USA.
Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
Univ Geneva, CH-1211 Geneva 4, Switzerland.
Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland.
Harvard Univ, Cambridge, MA 02138 USA.
Hiroshima Univ, Higashihiroshima 724, Japan.
Univ Illinois, Urbana, IL 61801 USA.
Johns Hopkins Univ, Baltimore, MD 21218 USA.
Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany.
Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea.
Seoul Natl Univ, Seoul 151742, South Korea.
Sungkyunkwan Univ, Suwon 440746, South Korea.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
UCL, London WC1E 6BT, England.
MIT, Cambridge, MA 02139 USA.
Univ Michigan, Ann Arbor, MI 48109 USA.
Michigan State Univ, E Lansing, MI 48824 USA.
Inst Theoret & Expt Phys, Moscow 117259, Russia.
Univ New Mexico, Albuquerque, NM 87131 USA.
Northwestern Univ, Evanston, IL 60208 USA.
Ohio State Univ, Columbus, OH 43210 USA.
Osaka City Univ, Osaka 588, Japan.
Univ Oxford, Oxford OX1 3RH, England.
Univ Padua, Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.
Univ Penn, Philadelphia, PA 19104 USA.
Univ Pisa, Ist Nazl Fis Nucl, I-56100 Pisa, Italy.
Scuola Normale Super Pisa, I-56100 Pisa, Italy.
Univ Pittsburgh, Pittsburgh, PA 15260 USA.
Purdue Univ, W Lafayette, IN 47907 USA.
Univ Rochester, Rochester, NY 14627 USA.
Rockefeller Univ, New York, NY 10021 USA.
Univ Rome 1, Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy.
Rutgers State Univ, Piscataway, NJ 08855 USA.
Texas A&M Univ, College Stn, TX 77843 USA.
Texas Tech Univ, Lubbock, TX 79409 USA.
Univ Toronto, Inst Particle Phys, Toronto, ON M5S 1A7, Canada.
Univ Trieste, Ist Nazl Fis Nucl, Udine, Italy.
Univ Tsukuba, Tsukuba, Ibaraki 305, Japan.
Tufts Univ, Medford, MA 02155 USA.
Waseda Univ, Tokyo 169, Japan.
Univ Wisconsin, Madison, WI 53706 USA.
Yale Univ, New Haven, CT 06520 USA.
RP Univ Florida, Gainesville, FL 32611 USA.
RI Paulini, Manfred/N-7794-2014; Lancaster, Mark/C-1693-2008; Ruiz,
Alberto/E-4473-2011; De Cecco, Sandro/B-1016-2012; Wolter,
Marcin/A-7412-2012; St.Denis, Richard/C-8997-2012; Azzi,
Patrizia/H-5404-2012; manca, giulia/I-9264-2012; Punzi,
Giovanni/J-4947-2012; Chiarelli, Giorgio/E-8953-2012; Ivanov,
Andrew/A-7982-2013; Kim, Soo-Bong/B-7061-2014; Scodellaro,
Luca/K-9091-2014; Cabrera Urban, Susana/H-1376-2015; Introzzi,
Gianluca/K-2497-2015; Gorelov, Igor/J-9010-2015; Prokoshin,
Fedor/E-2795-2012; Leonardo, Nuno/M-6940-2016;
OI Paulini, Manfred/0000-0002-6714-5787; Ruiz, Alberto/0000-0002-3639-0368;
Azzi, Patrizia/0000-0002-3129-828X; Punzi, Giovanni/0000-0002-8346-9052;
Chiarelli, Giorgio/0000-0001-9851-4816; Ivanov,
Andrew/0000-0002-9270-5643; Scodellaro, Luca/0000-0002-4974-8330;
Introzzi, Gianluca/0000-0002-1314-2580; Gorelov,
Igor/0000-0001-5570-0133; Prokoshin, Fedor/0000-0001-6389-5399;
Leonardo, Nuno/0000-0002-9746-4594; Gallinaro,
Michele/0000-0003-1261-2277; Turini, Nicola/0000-0002-9395-5230
NR 26
TC 65
Z9 65
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 OCT
PY 2004
VL 70
IS 7
AR 072002
DI 10.1103/PhysRevD.70.072002
PG 10
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 866UT
UT WOS:000224799600006
ER
PT J
AU Afanasev, AV
Merenkov, NP
AF Afanasev, AV
Merenkov, NP
TI Large logarithms in the beam normal spin asymmetry of elastic
electron-proton scattering
SO PHYSICAL REVIEW D
LA English
DT Article
ID POLARIZATION; DISTRIBUTIONS
AB We study a parity-conserving single-spin beam asymmetry of elastic electron-proton scattering induced by an absorptive part of the two-photon exchange amplitude. It is demonstrated that excitation of inelastic hadronic intermediate states by the consecutive exchange of two photons leads to logarithmic and double-logarithmic enhancement due to contributions of hard collinear quasireal photons. The asymmetry at small electron scattering angles is expressed in terms of the total photoproduction cross section on the proton and is predicted to reach the magnitude of 20-30 ppm. At these conditions and fixed 4-momentum transfers, the asymmetry is rising logarithmically with increasing electron beam energy, following the high-energy diffractive behavior of total photoproduction cross section on the proton.
C1 Jefferson Lab, Newport News, VA 23606 USA.
NSC Kharkov Inst Phys & Technol, UA-61108 Kharkov, Ukraine.
RP Jefferson Lab, Newport News, VA 23606 USA.
OI Afanasev, Andrei/0000-0003-0679-3307
NR 39
TC 23
Z9 23
U1 0
U2 0
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 OCT
PY 2004
VL 70
IS 7
AR 073002
DI 10.1103/PhysRevD.70.073002
PG 10
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 866UT
UT WOS:000224799600010
ER
PT J
AU Atkins, R
Benbow, W
Berley, D
Blaufuss, E
Bussons, J
Coyne, DG
DeYoung, T
Dingus, BL
Dorfan, DE
Ellsworth, RW
Fleysher, L
Fleysher, R
Gisler, G
Gonzalez, MM
Goodman, JA
Haines, TJ
Hays, E
Hoffman, CM
Kelley, LA
Lansdell, CP
Linnemann, JT
McEnery, JE
Miller, RS
Mincer, AI
Morales, MF
Nemethy, P
Noyes, D
Ryan, JM
Samuelson, FW
Shoup, A
Sinnis, G
Smith, AJ
Sullivan, GW
Williams, DA
Westerhoff, S
Wilson, ME
Xu, XW
Yodh, GB
AF Atkins, R
Benbow, W
Berley, D
Blaufuss, E
Bussons, J
Coyne, DG
DeYoung, T
Dingus, BL
Dorfan, DE
Ellsworth, RW
Fleysher, L
Fleysher, R
Gisler, G
Gonzalez, MM
Goodman, JA
Haines, TJ
Hays, E
Hoffman, CM
Kelley, LA
Lansdell, CP
Linnemann, JT
McEnery, JE
Miller, RS
Mincer, AI
Morales, MF
Nemethy, P
Noyes, D
Ryan, JM
Samuelson, FW
Shoup, A
Sinnis, G
Smith, AJ
Sullivan, GW
Williams, DA
Westerhoff, S
Wilson, ME
Xu, XW
Yodh, GB
TI Search for very high energy gamma rays from WIMP annihilations near the
Sun with the Milagro detector
SO PHYSICAL REVIEW D
LA English
DT Article
ID ANGULAR POWER SPECTRUM; DARK-MATTER; SUPERNOVAE; NEBULA
AB The neutralino, the lightest stable supersymmetric particle, is a strong theoretical candidate for the missing astronomical "dark matter". A profusion of such neutralinos can accumulate near the Sun when they lose energy upon scattering and are gravitationally captured. Pair-annihilations of those neutralinos may produce very high-energy (VHE, above 100 GeV) gamma rays. Milagro is an air shower array which uses the water Cherenkov technique to detect extensive-air showers and is capable of observing VHE gamma rays from the direction of the Sun with an angular resolution of 0.75degrees. Analysis of Milagro data with an exposure to the Sun of 1165 hours presents the first attempt to detect TeV gamma rays produced by annihilating neutralinos captured by the Solar system and shows no statistically significant signal. Resulting limits that can be set on the gamma-ray flux due to near-Solar neutralino annihilations and on the neutralino cross-section are presented.
C1 NYU, Dept Phys, New York, NY 10003 USA.
Univ Wisconsin, Dept Phys, Madison, WI 53706 USA.
Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA.
Univ Maryland, Dept Phys, College Pk, MD 20742 USA.
Los Alamos Natl Lab, Grp P23, Los Alamos, NM 87545 USA.
George Mason Univ, Dept Phys & Astron, Fairfax, VA 22030 USA.
Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA.
Univ New Hampshire, Dept Phys, Durham, NH 03824 USA.
Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA.
RP NYU, Dept Phys, 4 Washington Pl, New York, NY 10003 USA.
EM lazar.fleysher@physics.nyu.edu
RI Hays, Elizabeth/D-3257-2012;
OI Mincer, Allen/0000-0002-6307-1418; Dingus, Brenda/0000-0001-8451-7450
NR 26
TC 7
Z9 7
U1 0
U2 0
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 OCT
PY 2004
VL 70
IS 8
AR 083516
DI 10.1103/PhysRevD.70.083516
PG 8
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 866UX
UT WOS:000224800000033
ER
PT J
AU Aubert, B
Barate, R
Boutigny, D
Couderc, F
Gaillard, JM
Hicheur, A
Karyotakis, Y
Lees, JP
Tisserand, V
Zghiche, A
Palano, A
Pompili, A
Chen, JC
Qi, ND
Rong, G
Wang, P
Zhu, YS
Eigen, G
Ofte, I
Stugu, B
Abrams, GS
Borgland, AW
Breon, AB
Brown, DN
Button-Shafer, J
Cahn, RN
Charles, E
Day, CT
Gill, MS
Gritsan, AV
Groysman, Y
Jacobsen, RG
Kadel, RW
Kadyk, J
Kerth, LT
Kolomensky, YG
Kukartsev, G
Lynch, G
Mir, LM
Oddone, PJ
Orimoto, TJ
Pripstein, M
Roe, NA
Ronan, MT
Shelkov, VG
Wenzel, WA
Barrett, M
Ford, KE
Harrison, TJ
Hart, AJ
Hawkes, CM
Morgan, SE
Watson, AT
Fritsch, M
Goetzen, K
Held, T
Koch, H
Lewandowski, B
Pelizaeus, M
Steinke, M
Boyd, JT
Chevalier, N
Cottingham, WN
Kelly, MP
Latham, TE
Wilson, FF
Cuhadar-Donszelmann, T
Hearty, C
Knecht, NS
Mattison, TS
McKenna, JA
Thiessen, D
Khan, A
Kyberd, P
Teodorescu, L
Blinov, AE
Blinov, VE
Druzhinin, VP
Golubev, VB
Ivanchenko, VN
Kravchenko, EA
Onuchin, AP
Serednyakov, SI
Skovpen, YI
Solodov, EP
Yushkov, AN
Best, D
Bruinsma, M
Chao, M
Eschrich, I
Kirkby, D
Lankford, AJ
Mandelkern, M
Mommsen, RK
Roethel, W
Stoker, DP
Buchanan, C
Hartfiel, BL
Foulkes, SD
Gary, JW
Shen, BC
Wang, K
del Re, D
Hadavand, HK
Hill, EJ
MacFarlane, DB
Paar, HP
Rahatlou, S
Sharma, V
Berryhill, JW
Campagnari, C
Dahmes, B
Long, O
Lu, A
Mazur, MA
Richman, JD
Verkerke, W
Beck, TW
Eisner, AM
Heusch, CA
Kroseberg, J
Lockman, WS
Nesom, G
Schalk, T
Schumm, BA
Seiden, A
Spradlin, P
Williams, DC
Wilson, MG
Albert, J
Chen, E
Dubois-Felsmann, GP
Dvoretskii, A
Hitlin, DG
Narsky, I
Piatenko, T
Porter, FC
Ryd, A
Samuel, A
Yang, S
Jayatilleke, S
Mancinelli, G
Meadows, BT
Sokoloff, MD
Abe, T
Blanc, F
Bloom, P
Chen, S
Ford, WT
Nauenberg, U
Olivas, A
Rankin, P
Smith, JG
Zhang, J
Zhang, L
Chen, A
Harton, JL
Soffer, A
Toki, WH
Wilson, RJ
Zeng, QL
Altenburg, D
Brandt, T
Brose, J
Dickopp, M
Feltresi, E
Hauke, A
Lacker, HM
Muller-Pfefferkorn, R
Nogowski, R
Otto, S
Petzold, A
Schubert, J
Schubert, KR
Schwierz, R
Spaan, B
Sundermann, JE
Bernard, D
Bonneaud, GR
Brochard, F
Grenier, P
Schrenk, S
Thiebaux, C
Vasileiadis, G
Verderi, M
Bard, DJ
Clark, PJ
Lavin, D
Muheim, F
Playfer, S
Xie, Y
Andreotti, M
Azzolini, V
Bettoni, D
Bozzi, C
Calabrese, R
Cibinetto, G
Luppi, E
Negrini, M
Piemontese, L
Sarti, A
Treadwell, E
Anulli, F
Baldini-Ferroli, R
Calcaterra, A
de Sangro, R
Finocchiaro, G
Patteri, P
Peruzzi, IM
Piccolo, M
Zallo, A
Buzzo, A
Capra, R
Contri, R
Crosetti, G
Vetere, ML
Macri, M
Monge, MR
Passaggio, S
Patrignani, C
Robutti, E
Santroni, A
Tosi, S
Bailey, S
Brandenburg, G
Chaisanguanthum, KS
Morii, M
Won, E
Dubitzky, RS
Langenegger, U
Bhimji, W
Bowerman, DA
Dauncey, PD
Egede, U
Gaillard, JR
Morton, GW
Nash, JA
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Grenier, GJ
Mallik, U
Cochran, J
Crawley, HB
Lamsa, J
Meyer, WT
Prell, S
Rosenberg, EI
Rubin, AE
Yi, J
Biasini, M
Covarelli, R
Pioppi, M
Davier, M
Giroux, X
Grosdidier, G
Hocker, A
Laplace, S
Le Diberder, F
Lepeltier, V
Lutz, AM
Petersen, TC
Plaszczynski, S
Schune, MH
Tantot, L
Wormser, G
Cheng, CH
Lange, DJ
Simani, MC
Wright, DM
Bevan, AJ
Chavez, CA
Coleman, JP
Forster, IJ
Fry, JR
Gabathuler, E
Gamet, R
Hutchcroft, DE
Parry, RJ
Payne, DJ
Sloane, RJ
Touramanis, C
Back, JJ
Cormack, CM
Harrison, PF
Lodovico, FD
Mohanty, GB
Brown, CL
Cowan, G
Flack, RL
Flaecher, HU
Green, MG
Jackson, PS
McMahon, TR
Ricciardi, S
Salvatore, F
Winter, MA
Brown, D
Davis, CL
Allison, J
Barlow, NR
Barlow, RJ
Hart, PA
Hodgkinson, MC
Lafferty, GD
Lyon, AJ
Williams, JC
Farbin, A
Hulsbergen, WD
Jawahery, A
Kovalskyi, D
Lae, CK
Lillard, V
Roberts, DA
Blaylock, G
Dallapiccola, C
Flood, KT
Hertzbach, SS
Kofler, R
Koptchev, VB
Moore, TB
Saremi, S
Staengle, H
Willocq, S
Cowan, R
Sciolla, G
Sekula, SJ
Taylor, F
Yamamoto, RK
Mangeol, DJJ
Patel, PM
Robertson, SH
Lazzaro, A
Lombardo, V
Palombo, F
Bauer, JM
Cremaldi, L
Eschenburg, V
Godang, R
Kroeger, R
Reidy, J
Sanders, DA
Summers, DJ
Zhao, HW
Brunet, S
Cote, D
Taras, P
Nicholson, H
Cavallo, N
Fabozzi, F
Gatto, C
Lista, L
Monorchio, D
Paolucci, P
Piccolo, D
Sciacca, C
Baak, M
Bulten, H
Raven, G
Snoek, HL
Wilden, L
Jessop, CP
LoSecco, JM
Allmendinger, T
Gan, KK
Honscheid, K
Hufnagel, D
Kagan, H
Kass, R
Pulliam, T
Rahimi, AM
Ter-Antonyan, R
Wong, QK
Brau, J
Frey, R
Igonkina, O
Potter, CT
Sinev, NB
Strom, D
Torrence, E
Colecchia, F
Dorigo, A
Galeazzi, F
Margoni, M
Morandin, M
Posocco, M
Rotondo, M
Simonetto, F
Stroili, R
Tiozzo, G
Voci, C
Benayoun, M
Briand, H
Chauveau, J
David, P
de la Vaissiere, C
Del Buono, L
Hamon, O
John, MJJ
Leruste, P
Malcles, J
Ocariz, J
Pivk, M
Roos, L
T'Jampens, S
Therin, G
Manfredi, PF
Re, V
Behera, PK
Gladney, L
Guo, QH
Panetta, J
Angelini, C
Batignani, G
Bettarini, S
Bondioli, M
Bucci, F
Calderini, G
Carpinelli, M
Forti, F
Giorgi, MA
Lusiani, A
Marchiori, G
Martinez-Vidal, F
Morganti, M
Neri, N
Paoloni, E
Rama, M
Rizzo, G
Sandrelli, F
Walsh, J
Haire, M
Judd, D
Paick, K
Wagoner, DE
Danielson, N
Elmer, P
Lau, YP
Lu, C
Miftakov, V
Olsen, J
Smith, AJS
Telnov, AV
Bellini, F
Faccini, R
Ferrarotto, F
Ferroni, F
Gaspero, M
Gioi, LL
Mazzoni, MA
Morganti, S
Pierini, M
Piredda, G
Tehrani, FS
Voena, C
Cavoto, G
Christ, S
Wagner, G
Waldi, R
Adye, T
De Groot, N
Franek, B
Geddes, NI
Gopal, GP
Olaiya, EO
Aleksan, R
Emery, S
Gaidot, A
Ganzhur, SF
Giraud, PF
de Monchenault, GH
Kozanecki, W
Legendre, M
London, GW
Mayer, B
Schott, G
Vasseur, G
Yeche, C
Zito, M
Purohit, MV
Weidemann, AW
Wilson, JR
Yumiceva, FX
Aston, D
Bartoldus, R
Berger, N
Boyarski, AM
Buchmueller, OL
Claus, R
Convery, MR
Cristinziani, M
Nardo, GD
Dong, D
Dorfan, J
Dujmic, D
Dunwoodie, W
Elsen, EE
Fan, S
Field, RC
Glanzman, T
Gowdy, SJ
Hadig, T
Halyo, V
Hast, C
Hryn'ova, T
Innes, WR
Kelsey, MH
Kim, P
Kocian, ML
Leith, DWGS
Libby, J
Luitz, S
Luth, V
Lynch, HL
Marsiske, H
Messner, R
Muller, DR
O'Grady, CP
Ozcan, VE
Perazzo, A
Perl, M
Petrak, S
Ratcliff, BN
Roodman, A
Salnikov, AA
Schindler, RH
Schwiening, J
Simi, G
Snyder, A
Soha, A
Stelzer, J
Su, D
Sullivan, MK
Va'vra, J
Wagner, SR
Weaver, M
Weinstein, AJR
Wisniewski, WJ
Wittgen, M
Wright, DH
Yarritu, AK
Young, CC
Burchat, PR
Edwards, AJ
Meyer, TI
Petersen, BA
Roat, C
Ahmed, S
Alam, MS
Ernst, JA
Saeed, MA
Saleem, M
Wappler, FR
Bugg, W
Krishnamurthy, M
Spanier, SM
Eckmann, R
Kim, H
Ritchie, JL
Satpathy, A
Schwitters, RF
Izen, JM
Kitayama, I
Lou, XC
Ye, S
Bianchi, F
Bona, M
Gallo, F
Gamba, D
Bosisio, L
Cartaro, C
Cossutti, F
Della Ricca, G
Dittongo, S
Grancagnolo, S
Lanceri, L
Poropat, P
Vitale, L
Vuagnin, G
Panvini, RS
Banerjee, S
Brown, CM
Fortin, D
Jackson, PD
Kowalewski, R
Roney, JM
Sobie, RJ
Band, HR
Cheng, B
Dasu, S
Datta, M
Eichenbaum, AM
Graham, M
Hollar, JJ
Johnson, JR
Kutter, PE
Li, H
Liu, R
Mihalyi, A
Mohapatra, AK
Pan, Y
Prepost, R
Tan, P
von Wimmersperg-Toeller, JH
Wu, J
Wu, SL
Yu, Z
Greene, MG
Neal, H
AF Aubert, B
Barate, R
Boutigny, D
Couderc, F
Gaillard, JM
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Chen, JC
Qi, ND
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Kukartsev, G
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Mir, LM
Oddone, PJ
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Shelkov, VG
Wenzel, WA
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Ford, KE
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Bhimji, W
Bowerman, DA
Dauncey, PD
Egede, U
Gaillard, JR
Morton, GW
Nash, JA
Nikolich, MB
Taylor, GP
Charles, MJ
Grenier, GJ
Mallik, U
Cochran, J
Crawley, HB
Lamsa, J
Meyer, WT
Prell, S
Rosenberg, EI
Rubin, AE
Yi, J
Biasini, M
Covarelli, R
Pioppi, M
Davier, M
Giroux, X
Grosdidier, G
Hocker, A
Laplace, S
Le Diberder, F
Lepeltier, V
Lutz, AM
Petersen, TC
Plaszczynski, S
Schune, MH
Tantot, L
Wormser, G
Cheng, CH
Lange, DJ
Simani, MC
Wright, DM
Bevan, AJ
Chavez, CA
Coleman, JP
Forster, IJ
Fry, JR
Gabathuler, E
Gamet, R
Hutchcroft, DE
Parry, RJ
Payne, DJ
Sloane, RJ
Touramanis, C
Back, JJ
Cormack, CM
Harrison, PF
Lodovico, FD
Mohanty, GB
Brown, CL
Cowan, G
Flack, RL
Flaecher, HU
Green, MG
Jackson, PS
McMahon, TR
Ricciardi, S
Salvatore, F
Winter, MA
Brown, D
Davis, CL
Allison, J
Barlow, NR
Barlow, RJ
Hart, PA
Hodgkinson, MC
Lafferty, GD
Lyon, AJ
Williams, JC
Farbin, A
Hulsbergen, WD
Jawahery, A
Kovalskyi, D
Lae, CK
Lillard, V
Roberts, DA
Blaylock, G
Dallapiccola, C
Flood, KT
Hertzbach, SS
Kofler, R
Koptchev, VB
Moore, TB
Saremi, S
Staengle, H
Willocq, S
Cowan, R
Sciolla, G
Sekula, SJ
Taylor, F
Yamamoto, RK
Mangeol, DJJ
Patel, PM
Robertson, SH
Lazzaro, A
Lombardo, V
Palombo, F
Bauer, JM
Cremaldi, L
Eschenburg, V
Godang, R
Kroeger, R
Reidy, J
Sanders, DA
Summers, DJ
Zhao, HW
Brunet, S
Cote, D
Taras, P
Nicholson, H
Cavallo, N
Fabozzi, F
Gatto, C
Lista, L
Monorchio, D
Paolucci, P
Piccolo, D
Sciacca, C
Baak, M
Bulten, H
Raven, G
Snoek, HL
Wilden, L
Jessop, CP
LoSecco, JM
Allmendinger, T
Gan, KK
Honscheid, K
Hufnagel, D
Kagan, H
Kass, R
Pulliam, T
Rahimi, AM
Ter-Antonyan, R
Wong, QK
Brau, J
Frey, R
Igonkina, O
Potter, CT
Sinev, NB
Strom, D
Torrence, E
Colecchia, F
Dorigo, A
Galeazzi, F
Margoni, M
Morandin, M
Posocco, M
Rotondo, M
Simonetto, F
Stroili, R
Tiozzo, G
Voci, C
Benayoun, M
Briand, H
Chauveau, J
David, P
de la Vaissiere, C
Del Buono, L
Hamon, O
John, MJJ
Leruste, P
Malcles, J
Ocariz, J
Pivk, M
Roos, L
T'Jampens, S
Therin, G
Manfredi, PF
Re, V
Behera, PK
Gladney, L
Guo, QH
Panetta, J
Angelini, C
Batignani, G
Bettarini, S
Bondioli, M
Bucci, F
Calderini, G
Carpinelli, M
Forti, F
Giorgi, MA
Lusiani, A
Marchiori, G
Martinez-Vidal, F
Morganti, M
Neri, N
Paoloni, E
Rama, M
Rizzo, G
Sandrelli, F
Walsh, J
Haire, M
Judd, D
Paick, K
Wagoner, DE
Danielson, N
Elmer, P
Lau, YP
Lu, C
Miftakov, V
Olsen, J
Smith, AJS
Telnov, AV
Bellini, F
Faccini, R
Ferrarotto, F
Ferroni, F
Gaspero, M
Gioi, LL
Mazzoni, MA
Morganti, S
Pierini, M
Piredda, G
Tehrani, FS
Voena, C
Cavoto, G
Christ, S
Wagner, G
Waldi, R
Adye, T
De Groot, N
Franek, B
Geddes, NI
Gopal, GP
Olaiya, EO
Aleksan, R
Emery, S
Gaidot, A
Ganzhur, SF
Giraud, PF
de Monchenault, GH
Kozanecki, W
Legendre, M
London, GW
Mayer, B
Schott, G
Vasseur, G
Yeche, C
Zito, M
Purohit, MV
Weidemann, AW
Wilson, JR
Yumiceva, FX
Aston, D
Bartoldus, R
Berger, N
Boyarski, AM
Buchmueller, OL
Claus, R
Convery, MR
Cristinziani, M
Nardo, GD
Dong, D
Dorfan, J
Dujmic, D
Dunwoodie, W
Elsen, EE
Fan, S
Field, RC
Glanzman, T
Gowdy, SJ
Hadig, T
Halyo, V
Hast, C
Hryn'ova, T
Innes, WR
Kelsey, MH
Kim, P
Kocian, ML
Leith, DWGS
Libby, J
Luitz, S
Luth, V
Lynch, HL
Marsiske, H
Messner, R
Muller, DR
O'Grady, CP
Ozcan, VE
Perazzo, A
Perl, M
Petrak, S
Ratcliff, BN
Roodman, A
Salnikov, AA
Schindler, RH
Schwiening, J
Simi, G
Snyder, A
Soha, A
Stelzer, J
Su, D
Sullivan, MK
Va'vra, J
Wagner, SR
Weaver, M
Weinstein, AJR
Wisniewski, WJ
Wittgen, M
Wright, DH
Yarritu, AK
Young, CC
Burchat, PR
Edwards, AJ
Meyer, TI
Petersen, BA
Roat, C
Ahmed, S
Alam, MS
Ernst, JA
Saeed, MA
Saleem, M
Wappler, FR
Bugg, W
Krishnamurthy, M
Spanier, SM
Eckmann, R
Kim, H
Ritchie, JL
Satpathy, A
Schwitters, RF
Izen, JM
Kitayama, I
Lou, XC
Ye, S
Bianchi, F
Bona, M
Gallo, F
Gamba, D
Bosisio, L
Cartaro, C
Cossutti, F
Della Ricca, G
Dittongo, S
Grancagnolo, S
Lanceri, L
Poropat, P
Vitale, L
Vuagnin, G
Panvini, RS
Banerjee, S
Brown, CM
Fortin, D
Jackson, PD
Kowalewski, R
Roney, JM
Sobie, RJ
Band, HR
Cheng, B
Dasu, S
Datta, M
Eichenbaum, AM
Graham, M
Hollar, JJ
Johnson, JR
Kutter, PE
Li, H
Liu, R
Mihalyi, A
Mohapatra, AK
Pan, Y
Prepost, R
Tan, P
von Wimmersperg-Toeller, JH
Wu, J
Wu, SL
Yu, Z
Greene, MG
Neal, H
TI Study of the e(+)e(-)->pi(+)pi(-)pi(0) process using initial state
radiation with BABAR
SO PHYSICAL REVIEW D
LA English
DT Article
ID ELECTRON-POSITRON ANNIHILATION; HADRONIC CROSS-SECTION; BHABHA
SCATTERING; TAGGED PHOTONS; MONTE-CARLO; DECAYS; DETECTOR; VECTOR;
CMD-2; MESON
AB The process e(+)e(-)-->pi(+)pi(-)pi(0)gamma has been studied at a center-of-mass energy near the Y(4S) resonance using a 89.3 fb(-1) data sample collected with the BABAR detector at the PEP-II collider. From the measured 3pi mass spectrum we have obtained the products of branching fractions for the omega and phi mesons, B(omega-->e(+)e(-))B(omega-->3pi)=(6.70+/-0.06+/-0.27)x10(-5) and B(phi-->e(+)e(-)) B(phi-->3pi)=(4.30+/-0.08+/-0.21)x10(-5) and evaluated the e(+)e(-)-->pi(+)pi(-)pi(0) cross section for the e(+)e(-) center-of-mass energy range 1.05 to 3.00 GeV. About 900 e(+)e(-)-->J/psigamma-->pi(+)pi(-)pi(0)gamma events have been selected and the branching fraction B(J/psi-->pi(+)pi(-)pi(0))=(2.18+/-0.19)% has been measured.
C1 Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France.
Univ Bari, Dipartimento Fis, I-70126 Bari, Italy.
Ist Nazl Fis Nucl, I-70126 Bari, Italy.
Inst High Energy Phys, Beijing 100039, Peoples R China.
Univ Bergen, Inst Phys, N-5007 Bergen, Norway.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Univ Birmingham, Birmingham B15 2TT, W Midlands, England.
Ruhr Univ Bochum, Inst Expt Phys 1, D-44780 Bochum, Germany.
Univ Bristol, Bristol BS8 1TL, Avon, England.
Univ British Columbia, Vancouver, BC V6T 1Z1, Canada.
Brunel Univ, Uxbridge UB8 3PH, Middx, England.
Budker Inst Nucl Phys, Novosibirsk 630090, Russia.
Univ Calif Irvine, Irvine, CA 92697 USA.
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CALTECH, Pasadena, CA 91125 USA.
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Colorado State Univ, Ft Collins, CO 80523 USA.
Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany.
Ecole Polytech, LLR, F-91128 Palaiseau, France.
Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland.
Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy.
Ist Nazl Fis Nucl, I-44100 Ferrara, Italy.
Florida A&M Univ, Tallahassee, FL 32307 USA.
Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
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Harvard Univ, Cambridge, MA 02138 USA.
Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany.
Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England.
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Iowa State Univ, Ames, IA 50011 USA.
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Lab Accelerateur Lineaire, F-91898 Orsay, France.
Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Univ Liverpool, Liverpool L69 72E, Merseyside, England.
Univ London, Queen Mary, London E1 4NS, England.
Univ London Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England.
Univ Louisville, Louisville, KY 40292 USA.
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Univ Massachusetts, Amherst, MA 01003 USA.
MIT, Nucl Sci Lab, Cambridge, MA 02139 USA.
McGill Univ, Montreal, PQ H3A 2T8, Canada.
Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.
Ist Nazl Fis Nucl, I-20133 Milan, Italy.
Univ Mississippi, University, MS 38677 USA.
Univ Montreal, Lab Rene JA Levesque, Montreal, PQ H3C 3J7, Canada.
Mt Holyoke Coll, S Hadley, MA 01075 USA.
Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy.
Ist Nazl Fis Nucl, I-80126 Naples, Italy.
Natl Inst Nucl Phys & High Energy Phys, NIKHEF, NL-1009 DB Amsterdam, Netherlands.
Univ Notre Dame, Notre Dame, IN 46556 USA.
Ohio State Univ, Columbus, OH 43210 USA.
Univ Oregon, Eugene, OR 97403 USA.
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Univ Paris 06, Lab Phys Nucl & Hautes Energies, F-75252 Paris, France.
Univ Paris 07, Lab Phys Nucl & Hautes Energies, F-75252 Paris, France.
Univ Pavia, Dipartimento Elettron, I-27100 Pavia, Italy.
Ist Nazl Fis Nucl, I-27100 Pavia, Italy.
Univ Penn, Philadelphia, PA 19104 USA.
Univ Pisa, Dipartimento Fis, Scuola Normale Super Pisa, I-56127 Pisa, Italy.
Ist Nazl Fis Nucl, I-56127 Pisa, Italy.
Prairie View A&M Univ, Prairie View, TX 77446 USA.
Princeton Univ, Princeton, NJ 08544 USA.
Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy.
Ist Nazl Fis Nucl, I-00185 Rome, Italy.
Univ Rostock, D-18051 Rostock, Germany.
Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
CEA Saclay, DSM Dapnia, F-91191 Gif Sur Yvette, France.
Univ S Carolina, Columbia, SC 29208 USA.
Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA.
Stanford Univ, Stanford, CA 94305 USA.
SUNY Albany, Albany, NY 12222 USA.
Univ Tennessee, Knoxville, TN 37996 USA.
Univ Texas, Austin, TX 78712 USA.
Univ Texas, Richardson, TX 75083 USA.
Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, Italy.
Ist Nazl Fis Nucl, I-10125 Turin, Italy.
Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy.
Ist Nazl Fis Nucl, I-34127 Trieste, Italy.
Vanderbilt Univ, Nashville, TN 37235 USA.
Univ Victoria, Victoria, BC V8W 3P6, Canada.
Univ Wisconsin, Madison, WI 53706 USA.
Yale Univ, New Haven, CT 06511 USA.
Univ Basilicata, I-85100 Potenza, Italy.
Univ Valencia, CSIC, Inst Fis Corpuscular, IFIC, Valencia, Spain.
RP Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France.
RI Monge, Maria Roberta/G-9127-2012; Luppi, Eleonora/A-4902-2015;
Kravchenko, Evgeniy/F-5457-2015; Calabrese, Roberto/G-4405-2015; Mir,
Lluisa-Maria/G-7212-2015; Martinez Vidal, F*/L-7563-2014; Kolomensky,
Yury/I-3510-2015; Lo Vetere, Maurizio/J-5049-2012; Grancagnolo,
Sergio/J-3957-2015; de Groot, Nicolo/A-2675-2009; Lista,
Luca/C-5719-2008; Bellini, Fabio/D-1055-2009; crosetti,
nanni/H-3040-2011; Roe, Natalie/A-8798-2012; Neri, Nicola/G-3991-2012;
Forti, Francesco/H-3035-2011; Rotondo, Marcello/I-6043-2012; Patrignani,
Claudia/C-5223-2009; de Sangro, Riccardo/J-2901-2012; Sarti,
Alessio/I-2833-2012; Cavallo, Nicola/F-8913-2012; Della Ricca,
Giuseppe/B-6826-2013; M, Saleem/B-9137-2013; Calcaterra,
Alessandro/P-5260-2015; Frey, Raymond/E-2830-2016; Lusiani,
Alberto/A-3329-2016; Lusiani, Alberto/N-2976-2015; Saeed, Mohammad
Alam/J-7455-2012; Negrini, Matteo/C-8906-2014; Morandin,
Mauro/A-3308-2016; Di Lodovico, Francesca/L-9109-2016
OI Monge, Maria Roberta/0000-0003-1633-3195; Luppi,
Eleonora/0000-0002-1072-5633; Calabrese, Roberto/0000-0002-1354-5400;
Mir, Lluisa-Maria/0000-0002-4276-715X; Martinez Vidal,
F*/0000-0001-6841-6035; Kolomensky, Yury/0000-0001-8496-9975; Lo Vetere,
Maurizio/0000-0002-6520-4480; Grancagnolo, Sergio/0000-0001-8490-8304;
Bellini, Fabio/0000-0002-2936-660X; Neri, Nicola/0000-0002-6106-3756;
Forti, Francesco/0000-0001-6535-7965; Rotondo,
Marcello/0000-0001-5704-6163; Patrignani, Claudia/0000-0002-5882-1747;
de Sangro, Riccardo/0000-0002-3808-5455; Sarti,
Alessio/0000-0001-5419-7951; Della Ricca, Giuseppe/0000-0003-2831-6982;
Calcaterra, Alessandro/0000-0003-2670-4826; Frey,
Raymond/0000-0003-0341-2636; Lusiani, Alberto/0000-0002-6876-3288;
Lusiani, Alberto/0000-0002-6876-3288; Saeed, Mohammad
Alam/0000-0002-3529-9255; Negrini, Matteo/0000-0003-0101-6963; Morandin,
Mauro/0000-0003-4708-4240; Di Lodovico, Francesca/0000-0003-3952-2175
NR 37
TC 181
Z9 184
U1 0
U2 9
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 OCT
PY 2004
VL 70
IS 7
AR 072004
DI 10.1103/PhysRevD.70.072004
PG 22
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 866UT
UT WOS:000224799600008
ER
PT J
AU Baur, U
Wackeroth, D
AF Baur, U
Wackeroth, D
TI Electroweak radiative corrections to pp(-)-> W-+/--> l(+/-)nu beyond the
pole approximation
SO PHYSICAL REVIEW D
LA English
DT Article
ID W-BOSON MASS; QUANTUM-CHROMODYNAMIC CORRECTIONS; LEADING-LOGARITHM
CALCULATION; DEEP-INELASTIC SCATTERING; P(P)OVER-BAR COLLISIONS; PARTON
DISTRIBUTIONS; HADRON COLLIDERS; STANDARD MODEL; ROOT-S=1.8 TEV;
HIGH-ENERGY
AB We present a calculation of the complete electroweak O(alpha) corrections to pp(-)-->W+/--->l(+/-)nuX (.=e,mu) in the standard model of electroweak interactions, focusing on those corrections which do not contribute in the pole approximation. We study in detail the effect of these corrections on the transverse mass distribution, the W-width measurement, and the transverse mass ratio and cross section ratio of W and Z bosons.
C1 SUNY Buffalo, Dept Phys, Buffalo, NY 14260 USA.
Kavli Inst Theoret Phys, Santa Barbara, CA USA.
Fermilab Theory Grp, Batavia, IL USA.
RP Baur, U (reprint author), SUNY Buffalo, Dept Phys, Buffalo, NY 14260 USA.
EM baur@ubhex.physics.buffalo.edu; dow@ubpheno.physics.buffalo.edu
NR 93
TC 57
Z9 57
U1 0
U2 0
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2821
J9 PHYS REV D
JI Phys. Rev. D
PD OCT
PY 2004
VL 70
IS 7
AR 073015
DI 10.1103/PhysRevD.70.073015
PG 15
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 866UT
UT WOS:000224799600023
ER
PT J
AU Beane, SR
Savage, MJ
AF Beane, SR
Savage, MJ
TI Baryon axial charge in a finite volume
SO PHYSICAL REVIEW D
LA English
DT Article
ID CHIRAL PERTURBATION-THEORY; LATTICE QCD; NUCLEON MASS; SYMMETRIES;
FERMIONS; SPECTRUM; STATES; DECAYS; G(A); PI
AB We compute finite-volume corrections to nucleon matrix elements of the axial-vector current. We show that knowledge of this finite-volume dependence-as well as that of the nucleon mass-obtained using lattice QCD may allow a clean determination of the chiral-limit values of the nucleon and Delta-resonance axial-vector couplings.
C1 Univ New Hampshire, Dept Phys, Durham, NH 03824 USA.
Jefferson Lab, Newport News, VA 23606 USA.
Univ Washington, Dept Phys, Seattle, WA 98195 USA.
RP Beane, SR (reprint author), Univ New Hampshire, Dept Phys, Durham, NH 03824 USA.
NR 53
TC 48
Z9 48
U1 0
U2 0
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2821
J9 PHYS REV D
JI Phys. Rev. D
PD OCT
PY 2004
VL 70
IS 7
AR 074029
DI 10.1103/PhysRevD.70.074029
PG 7
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 866UT
UT WOS:000224799600054
ER
PT J
AU Berger, EL
Campbell, J
AF Berger, EL
Campbell, J
TI Higgs boson production in weak boson fusion at next-to-leading order
SO PHYSICAL REVIEW D
LA English
DT Article
ID HADRON-HADRON COLLISIONS; QCD
AB The weak boson fusion process for neutral Higgs boson production is investigated with particular attention to the accuracy with which the Higgs boson coupling to weak bosons can be determined at CERN Large Hadron Collider energies in final states that contain a Higgs boson plus at least two jets. Using fully differential perturbative matrix elements for the weak boson fusion signal process and for the QCD background processes, we generate events in which a Higgs boson is produced along with two jets that carry large transverse momentum. The effectiveness of different prescriptions to enhance the signal-to background ratio is studied, and the expected signal purities are calculated in each case. We find that a simple cut on the rapidity of one final-state jet works well. We determine that an accuracy of deltag/gsimilar to10% on the effective coupling g may be possible after similar to200 fb(-1) of integrated luminosity is accumulated at the Large Hadron Collider.
C1 Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA.
RP Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA.
EM berger@anl.gov; johnmc@hep.anl.gov
NR 37
TC 80
Z9 80
U1 0
U2 0
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 OCT
PY 2004
VL 70
IS 7
AR 073011
DI 10.1103/PhysRevD.70.073011
PG 16
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 866UT
UT WOS:000224799600019
ER
PT J
AU Cacciapaglia, G
Csaki, C
Grojean, C
Terning, J
AF Cacciapaglia, G
Csaki, C
Grojean, C
Terning, J
TI Oblique corrections from Higgsless models in warped space
SO PHYSICAL REVIEW D
LA English
DT Article
ID YANG-MILLS THEORY; TECHNICOLOR THEORIES; CHIRAL HIERARCHIES; ELECTROWEAK
PARAMETERS; SYMMETRY-BREAKING; STANDARD MODEL; UNITARITY; HYPERCOLOR;
DIMENSIONS; SCALE
AB We calculate the tree-level oblique corrections to electroweak precision observables generated in Higgless models of electroweak symmetry breaking with a 5D SU(2)(L)xSU(2)(R)xU(1)(B-L) gauge group on a warped background. In the absence of brane induced kinetic terms (and equal left and right gauge couplings) we find the S parameter to be similar to1.15, while Tsimilar toUsimilar to0, as in technicolor theories. Planck brane induced kinetic terms and unequal left-right couplings can lower S, however for sufficiently low values of S tree-level unitarity will be lost. A kinetic term localized on the TeV brane for SU(2)(D) will generically increase S, however an induced kinetic term for U(1)(B-L) on the TeV brane will lower S. With an appropriate choice of the value of this induced kinetic term Ssimilar to0 can be achieved. In this case the mass of the lowest Z(') mode will be lowered to about 300 GeV.
C1 Cornell Univ, Inst High Energy Phenomenol, Newman Lab Elementary Particle Phys, Ithaca, NY 14853 USA.
CEA Saclay, Serv Phys Theor, F-91191 Gif Sur Yvette, France.
Michigan Ctr Theoret Phys, Ann Arbor, MI 48109 USA.
Los Alamos Natl Lab, Theory Div T8, Los Alamos, NM 87545 USA.
RP Cacciapaglia, G (reprint author), Cornell Univ, Inst High Energy Phenomenol, Newman Lab Elementary Particle Phys, Ithaca, NY 14853 USA.
EM cacciapa@mail.lns.cornell.edu; csaki@lepp.cornell.edu;
grojean@spht.saclay.cea.fr; terning@lanl.gov
OI Terning, John/0000-0003-1367-0575; grojean,
christophe/0000-0002-7196-7361
NR 39
TC 96
Z9 96
U1 0
U2 0
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2821
J9 PHYS REV D
JI Phys. Rev. D
PD OCT
PY 2004
VL 70
IS 7
AR 075014
DI 10.1103/PhysRevD.70.075014
PG 11
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 866UT
UT WOS:000224799600086
ER
PT J
AU Chacko, Z
Graesser, ML
Grojean, C
Pilo, L
AF Chacko, Z
Graesser, ML
Grojean, C
Pilo, L
TI Massive gravity on a brane
SO PHYSICAL REVIEW D
LA English
DT Article
ID EXTRA DIMENSIONS; FIELD; SPACE
AB At present no theory of a massive graviton is known that is consistent with experiments at both long and short distances. The problem is that consistency with long distance experiments requires the graviton mass to be very small. Such a small graviton mass however implies an ultraviolet cutoff for the theory at length scales far larger than the millimeter scale at which gravity has already been measured. In this paper we attempt to construct a model which avoids this problem. We consider a brane world setup in warped anti- de Sitter spacetime and we investigate the consequences of writing a mass term for the graviton on an infrared brane where the local cutoff is of order a large (galactic) distance scale. The advantage of this setup is that the low cutoff for physics on the infrared brane does not significantly affect the predictivity of the theory for observers localized on the ultraviolet brane. For such observers the predictions of this theory agree with general relativity at distances smaller than the infrared scale but go over to those of a theory of massive gravity at longer distances. A careful analysis of the graviton two-point function, however, reveals the presence of a ghost in the low energy spectrum. A mode decomposition of the higher dimensional theory reveals that the ghost corresponds to the radion field. We also investigate the theory with a brane-localized mass for the graviton on the ultraviolet brane, and show that the physics of this case is similar to that of a conventional four dimensional theory with a massive graviton, but with one important difference: when the infrared brane decouples and the would-be massive graviton gets heavier than the regular Kaluza-Klein modes, it becomes unstable and it has a finite width to decay off the brane into the continuum of Kaluza-Klein states.
C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
CALTECH, Pasadena, CA 91125 USA.
CEA Saclay, Serv Phys Theor, F-91191 Gif Sur Yvette, France.
Michigan Ctr Theoret Phys, Ann Arbor, MI 48109 USA.
Univ Padua, Ist Nazl Fis Nucl, Dipartimento Fis G Galilei, Sez Padova, I-35131 Padua, Italy.
RP Chacko, Z (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM zchacko@thsrv.lbl.gov; graesser@theory.caltech.edu;
grojean@spht.saclay.cea.fr; pilo@pd.infn.it
RI Pilo, Luigi/G-6589-2012;
OI Pilo, Luigi/0000-0003-3554-2427; grojean, christophe/0000-0002-7196-7361
NR 51
TC 12
Z9 12
U1 0
U2 0
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2821
J9 PHYS REV D
JI Phys. Rev. D
PD OCT
PY 2004
VL 70
IS 8
AR 084028
DI 10.1103/PhysRevD.70.084028
PG 15
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 866UX
UT WOS:000224800000081
ER
PT J
AU Chacko, Z
Hall, LJ
Okui, T
Oliver, SJ
AF Chacko, Z
Hall, LJ
Okui, T
Oliver, SJ
TI CMB signals of neutrino mass generation
SO PHYSICAL REVIEW D
LA English
DT Article
ID PROBE WMAP OBSERVATIONS; TRITIUM BETA-SPECTRUM; BROKEN LEPTON NUMBER;
COSMOLOGICAL PARAMETERS; MAJORON COUPLINGS; SCALE; CONSTRAINTS;
UNIVERSE; MODEL; DECAY
AB We propose signals in the cosmic microwave background (CMB) to probe the type and spectrum of neutrino masses. In theories that have spontaneous breaking of approximate lepton flavor symmetries at or below the weak scale, light pseudo-Goldstone bosons recouple to the cosmic neutrinos after nucleosynthesis and affect the acoustic oscillations of the electron-photon fluid during the eV era. Deviations from the Standard Model are predicted for both the total energy density in radiation during this epoch, DeltaN(nu), and for the multipole of the n'th CMB peak at large n, Deltal(n). The latter signal is difficult to reproduce other than by scattering of the known neutrinos, and is therefore an ideal test of our class of theories. In many models, the large shift Deltal(n)approximate to8n(S) depends on the number of neutrino species that scatter via the pseudo-Goldstone boson interaction. This interaction is proportional to the neutrino masses, so that the signal reflects the neutrino spectrum. The prediction for DeltaN(nu) is highly model dependent, but can be accurately computed within any given model. It is very sensitive to the number of pseudo-Goldstone bosons, and therefore to the underlying symmetries of the leptons, and is typically in the region of 0.03=(m/M-1)(alpha) (Deltaalphaapproximate to0.03), and perhaps even the Hubble parameter (Deltahapproximate to0.07). We find cluster abundances and bias are not well suited for constraining Omega(m) or the amplitude M-1. We also find that without bias information sigma(8) and alpha are degenerate, implying constraints on the former are strongly dependent on priors used for the latter and vice-versa. The degeneracy stems from an intrinsic scaling relation of the halo mass function, and hence it should be present regardless of the mass-tracer used in the survey.
C1 Univ Chicago, Dept Phys, Chicago, IL 60637 USA.
Ctr Cosmol Phys, Chicago, IL 60637 USA.
Fermilab Natl Accelerator Lab, NASA, Fermi Astrophys Ctr, Batavia, IL 60510 USA.
Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA.
RP Rozo, E (reprint author), Univ Chicago, Dept Phys, Chicago, IL 60637 USA.
NR 54
TC 9
Z9 9
U1 0
U2 1
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0556-2821
J9 PHYS REV D
JI Phys. Rev. D
PD OCT
PY 2004
VL 70
IS 8
AR 083008
DI 10.1103/PhysRevD.70.083008
PG 21
WC Astronomy & Astrophysics; Physics, Particles & Fields
SC Astronomy & Astrophysics; Physics
GA 866UX
UT WOS:000224800000016
ER
PT J
AU Cao, YH
Tung, WW
Gao, JB
Protopopescu, VA
Hively, LM
AF Cao, YH
Tung, WW
Gao, JB
Protopopescu, VA
Hively, LM
TI Detecting dynamical changes in time series using the permutation entropy
SO PHYSICAL REVIEW E
LA English
DT Article
ID NEURONAL COMPLEXITY LOSS; TEMPORAL-LOBE EPILEPSY; DETERMINISTIC CHAOS;
NONLINEAR-ANALYSIS; RECURRENCE PLOTS; EEG RECORDINGS; INTERVAL MAPS;
SCALP EEG; NONSTATIONARITY; SEIZURES
AB Timely detection of unusual and/or unexpected events in natural and man-made systems has deep scientific and practical relevance. We show that the recently proposed conceptually simple and easily calculated measure of permutation entropy can be effectively used to detect qualitative and quantitative dynamical changes. We illustrate our results on two model systems as well as on clinically characterized brain wave data from epileptic patients.
C1 Natl Ctr Atmospher Res, Boulder, CO 80307 USA.
BioSieve, San Jose, CA 95117 USA.
Univ Florida, Dept Elect & Comp Engn, Gainesville, FL 32611 USA.
Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Tung, WW (reprint author), Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA.
EM contact@biosieve.com; wwtung@ucar.edu; gao@ece.ufl.edu;
protopopesva@ornl.gov; hivelylm@ornl.gov
NR 36
TC 177
Z9 186
U1 4
U2 42
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 OCT
PY 2004
VL 70
IS 4
AR 046217
DI 10.1103/PhysRevE.70.046217
PN 2
PG 7
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 879AU
UT WOS:000225689600060
PM 15600505
ER
PT J
AU Habara, H
Lancaster, KL
Karsch, S
Murphy, CD
Norreys, PA
Evans, RG
Borghesi, M
Romagnani, L
Zepf, M
Norimatsu, T
Toyama, Y
Kodama, R
King, JA
Snavely, R
Akli, K
Zhang, B
Freeman, R
Hatchett, S
MacKinnon, AJ
Patel, P
Key, MH
Stoeckl, C
Stephens, RB
Fonseca, RA
Silva, LO
AF Habara, H
Lancaster, KL
Karsch, S
Murphy, CD
Norreys, PA
Evans, RG
Borghesi, M
Romagnani, L
Zepf, M
Norimatsu, T
Toyama, Y
Kodama, R
King, JA
Snavely, R
Akli, K
Zhang, B
Freeman, R
Hatchett, S
MacKinnon, AJ
Patel, P
Key, MH
Stoeckl, C
Stephens, RB
Fonseca, RA
Silva, LO
TI Ion acceleration from the shock front induced by hole boring in
ultraintense laser-plasma interactions
SO PHYSICAL REVIEW E
LA English
DT Article
ID NEUTRON EMISSION; INTENSITY LASER; SOLID TARGETS; GENERATION; PULSE;
IRRADIATION; ELECTRON; VULCAN; BEAMS
AB Ion-acceleration processes have been studied in ultraintense laser plasma interactions for normal incidence irradiation of solid deuterated targets via neutron spectroscopy. The experimental neutron spectra strongly suggest that the ions are preferentially accelerated radially, rather than into the bulk of the material from three-dimensional Monte Carlo fitting of the neutron spectra. Although the laser system has a 10(-7) contrast ratio, a two-dimensional magnetic hydrodynamics simulation shows that the laser pedestal generates a 10 mum scale length in the coronal plasma with a 3 mum scale-length plasma near the critical density. Two-dimensional particle-in-cell simulations, incorporating this realistic density profile, indicate that the acceleration of the ions is caused by a collisionless shock formation. This has implications for modeling energy transport in solid is caused by a collisionless shock formation. This has implications for modeling energy transport in solid density plasmas as well as cone-focused fast ignition using the next generation PW lasers currently under construction.
C1 Rutherford Appleton Lab, Cent Laser Facil, Didcot OX11 0QX, Oxon, England.
Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BZ, England.
Queens Univ Belfast, Dept Pure & Appl Phys, Belfast BT7 1NN, Antrim, North Ireland.
Osaka Univ, Inst Laser Engn, Suita, Osaka 5650871, Japan.
Univ Calif Davis, Dept Appl Sci, Davis, CA 95616 USA.
Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA.
Gen Atom Co, San Diego, CA 92186 USA.
Inst Super Tecn, GOLP, Ctr Fis Plasmas, P-1049001 Lisbon, Portugal.
RP Habara, H (reprint author), Rutherford Appleton Lab, Cent Laser Facil, Didcot OX11 0QX, Oxon, England.
RI Kodama, Ryosuke/G-2627-2016; Silva, Luis/C-3169-2009; Fonseca,
Ricardo/B-7680-2009; Patel, Pravesh/E-1400-2011; Toyama,
Yusuke/H-8023-2012; Borghesi, Marco/K-2974-2012; Zepf, Matt/M-1232-2014;
MacKinnon, Andrew/P-7239-2014; Norimatsu, Takayoshi/I-5710-2015
OI Stephens, Richard/0000-0002-7034-6141; Silva, Luis/0000-0003-2906-924X;
Fonseca, Ricardo/0000-0001-6342-6226; Toyama,
Yusuke/0000-0003-3230-1062; MacKinnon, Andrew/0000-0002-4380-2906;
NR 28
TC 44
Z9 48
U1 2
U2 10
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 OCT
PY 2004
VL 70
IS 4
AR 046414
DI 10.1103/PhysRevE.70.046414
PN 2
PG 4
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 879AU
UT WOS:000225689600092
PM 15600537
ER
PT J
AU Kevrekidis, PG
Konotop, VV
Malomed, BA
Bishop, AR
AF Kevrekidis, PG
Konotop, VV
Malomed, BA
Bishop, AR
TI Nonlinearity from geometric interactions: A case example
SO PHYSICAL REVIEW E
LA English
DT Article
ID DIATOMIC LATTICES; MOVING BREATHERS; DNA MODEL; SOLITONS; CHAIN
AB We propose a ladder model wherein dynamical nonlinearity arises from geometry. It includes two strings of particles which are set along rigid rails of a "railroad" and coupled by linear springs. Physical realizations of the model include dust-particle strings in plasma sheaths and chains of microparticles trapped in a strong optical lattice. The transverse couplings between the strings, along with the, motion constraint,imposed by the rails, generate nonlinearity. It gives rise to robust solitary waves, which are found analytically in the long-wavelength limit, and are obtained in simulations of the full system.
C1 Univ Massachusetts, Dept Math & Stat, Amherst, MA 01003 USA.
Univ Lisbon, Ctr Fis Teor & Computac, P-1649003 Lisbon, Portugal.
Univ Lisbon, Dept Fis, P-1749016 Lisbon, Portugal.
Tel Aviv Univ, Fac Engn, Dept Interdisciplinary Studies, IL-69978 Tel Aviv, Israel.
Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Univ Massachusetts, Dept Math & Stat, Lederle Grad Res Tower, Amherst, MA 01003 USA.
RI Konotop, Vladimir/C-6664-2012; Konotop, Vladimir/E-6964-2011
OI Konotop, Vladimir/0000-0002-1398-3910
NR 28
TC 2
Z9 2
U1 0
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 2470-0045
EI 2470-0053
J9 PHYS REV E
JI Phys. Rev. E
PD OCT
PY 2004
VL 70
IS 4
AR 047602
DI 10.1103/PhysRevE.70.047602
PN 2
PG 4
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 879AU
UT WOS:000225689600123
ER
PT J
AU Koschny, T
Markos, P
Smith, DR
Soukoulis, CM
AF Koschny, T
Markos, P
Smith, DR
Soukoulis, CM
TI Reply to Comments on ''Resonant and antiresonant frequency dependence of
the effective parameters of metamaterials''
SO PHYSICAL REVIEW E
LA English
DT Letter
AB We argue, in agreement with our previous work, that periodicity of the metamaterial is responsible for antiresonant behavior of the effective permittivity as well as for the negative sign of the imaginary part of an effective permittivity or permeability. This agrees with the Comment of Efros.
C1 Fdn Res & Technol Hellas, Iraklion 71110, Crete, Greece.
Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
Slovak Acad Sci, Inst Phys, Bratislava 84511, Slovakia.
Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA.
RP Koschny, T (reprint author), Fdn Res & Technol Hellas, Iraklion 71110, Crete, Greece.
EM soukoulis@ameslab.gov
RI Soukoulis, Costas/A-5295-2008; Smith, David/E-4710-2012
NR 6
TC 31
Z9 31
U1 0
U2 8
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 OCT
PY 2004
VL 70
IS 4
AR 048603
DI 10.1103/PhysRevE.70.048603
PN 2
PG 1
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 879AU
UT WOS:000225689600130
ER
PT J
AU Nagler, B
Verschaffelt, G
Peeters, M
Albert, J
Veretennicoff, I
Danckaert, J
Giacomelli, G
Marin, F
AF Nagler, B
Verschaffelt, G
Peeters, M
Albert, J
Veretennicoff, I
Danckaert, J
Giacomelli, G
Marin, F
TI Modulation frequency response of a bistable system with noise
SO PHYSICAL REVIEW E
LA English
DT Article
ID SURFACE-EMITTING LASERS; STOCHASTIC RESONANCE; SIGNALS
AB We present a method to construct a modulation frequency response curve for bistable systems in the presence of noise. To this end, a small sinusoidal modulation is applied to the system such that it switches between its two stable states. The response curve we construct yields information on the nature of the physical mechanism underlying the switching process and is furthermore comparable to the standard response curves of linear systems. Our semianalytical approach, which only needs approximate Kramer rates, is in good agreement with numerical simulations. The concept is applicable to a wide range of systems.
C1 Free Univ Brussels, Dept Appl Phys & Photon TW TONA, B-1050 Brussels, Belgium.
Ist Nazl Ott Applicata, I-50125 Florence, Italy.
INFM, Unita Firenze, Florence, Italy.
Univ Florence, Dipartimento Fis, I-50019 Sesto Fiorentino, Italy.
Univ Florence, LENS, I-50019 Sesto Fiorentino, Italy.
RP Nagler, B (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Beam Phys, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM Bob.Nagler@fulbrightweb.org
RI Marin, Francesco/I-7492-2013; Giacomelli, Giovanni/B-8374-2015
OI Marin, Francesco/0000-0001-8227-124X; Giacomelli,
Giovanni/0000-0002-5140-0173
NR 20
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 1539-3755
J9 PHYS REV E
JI Phys. Rev. E
PD OCT
PY 2004
VL 70
IS 4
AR 046214
DI 10.1103/PhysRevE.70.046214
PN 2
PG 7
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 879AU
UT WOS:000225689600057
ER
PT J
AU Stone, MB
Barry, R
Bernstein, DP
Pelc, MD
Tsui, YK
Schiffer, P
AF Stone, MB
Barry, R
Bernstein, DP
Pelc, MD
Tsui, YK
Schiffer, P
TI Local jamming via penetration of a granular medium
SO PHYSICAL REVIEW E
LA English
DT Article
ID STRESS PROPAGATION; FLUCTUATIONS; RESISTANCE; MATTER; DRAG; DYNAMICS;
BOTTOM; SAND
AB We present a series of measurements examining the penetration force required to push a flat plate vertically through a dense granular medium, focusing in particular on the effects of the bottom boundary of the vessel containing the medium. Our data demonstrate that the penetration force near the bottom is strongly affected by the surface properties of the bottom boundary, even many grain diameters above the bottom. Furthermore, the data indicate an intrinsic length scale for the interaction of the penetrating plate with the vessel bottom via the medium. This length scale, which corresponds to the extent of local jamming induced by the penetrating plate, has a square root dependence both upon the plate radius and the ambient granular stress near the bottom boundary, but it is independent of penetration velocity and grain diameter.
C1 Penn State Univ, Dept Phys, University Pk, PA 16802 USA.
Penn State Univ, Inst Mat Res, University Pk, PA 16802 USA.
RP Stone, MB (reprint author), Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA.
EM schiffer@phys.psu.edu
RI Schiffer, Peter/F-3227-2011; Stone, Matthew/G-3275-2011;
OI Stone, Matthew/0000-0001-7884-9715; Schiffer, Peter/0000-0002-6430-6549
NR 31
TC 60
Z9 62
U1 1
U2 8
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 OCT
PY 2004
VL 70
IS 4
AR 041301
DI 10.1103/PhysRevE.70.041301
PN 1
PG 10
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 879AT
UT WOS:000225689500017
PM 15600401
ER
PT J
AU Torgerson, JR
Lamoreaux, SK
AF Torgerson, JR
Lamoreaux, SK
TI Low-frequency character of the Casimir force between metallic films
SO PHYSICAL REVIEW E
LA English
DT Article
ID MU-M RANGE; TEMPERATURE
AB The frequency spectrum of the finite temperature correction to the Casimir. force can be determined by use of the Lifshitz formalism for metallic plates of finite conductivity. We show that the correction for the TE electromagnetic modes is dominated by frequencies so low that the plates cannot be modeled as ideal dielectrics. We also address issues relating to the behavior of electromagnetic. fields at the surfaces and within. metallic conductors, and calculate the surface modes using appropriate low-frequency metallic boundary conditions. Our result brings the thermal correction into agreement with experimental results that were previously obtained. We suggest a series of measurements that will test the veracity of our analysis.
C1 Los Alamos Natl Lab, Div Phys P23, Los Alamos, NM 87545 USA.
RP Torgerson, JR (reprint author), Los Alamos Natl Lab, Div Phys P23, MS H803, Los Alamos, NM 87545 USA.
NR 24
TC 39
Z9 39
U1 0
U2 0
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 OCT
PY 2004
VL 70
IS 4
AR 047102
DI 10.1103/PhysRevE.70.047102
PN 2
PG 4
WC Physics, Fluids & Plasmas; Physics, Mathematical
SC Physics
GA 879AU
UT WOS:000225689600120
PM 15600565
ER
PT J
AU Abazov, VM
Abbott, B
Abolins, M
Acharya, BS
Adams, DL
Adams, M
Adams, T
Agelou, M
Agram, JL
Ahmed, SN
Ahn, SH
Alexeev, GD
Alkhazov, G
Alton, A
Alverson, G
Alves, GA
Anderson, S
Andrieu, B
Arnoud, Y
Askew, A
Asman, B
Autermann, C
Avila, C
Babukhadia, L
Bacon, TC
Baden, A
Baffioni, S
Baldin, B
Balm, PW
Banerjee, S
Barberis, E
Bargassa, P
Baringer, P
Barnes, C
Barreto, J
Bartlett, JF
Bassler, U
Bauer, D
Bean, A
Beauceron, S
Beaudette, F
Begel, M
Beri, SB
Bernardi, G
Bertram, I
Besancon, M
Besson, A
Beuselinck, R
Bezzubov, VA
Bhat, PC
Bhatnagar, V
Bhattacharjee, M
Binder, M
Bischoff, A
Black, KM
Blackler, I
Blazey, G
Blekman, F
Bloch, D
Blumenschein, U
Boehnlein, A
Bolton, TA
Bonamy, P
Borcherding, F
Borissov, G
Bos, K
Bose, T
Boswell, C
Brandt, A
Briskin, G
Brock, R
Brooijmans, G
Bross, A
Buchholz, D
Buehler, M
Buescher, V
Burdin, S
Burnett, TH
Busato, E
Butler, JM
Bystricky, J
Canelli, F
Carvalho, W
Casey, BCK
Casey, D
Cason, NM
Castilla-Valdez, H
Chakrabarti, S
Chakraborty, D
Chan, KM
Chandra, A
Chapin, D
Charles, F
Cheu, E
Chevalier, L
Cho, DK
Choi, S
Chopra, S
Christiansen, T
Christofek, L
Claes, D
Clark, AR
Clement, C
Coadou, Y
Colling, DJ
Coney, L
Connolly, B
Cooper, WE
Coppage, D
Corcoran, M
Coss, J
Cothenet, A
Cousinou, MC
Crepe-Renaudin, S
Cristetiu, M
Cummings, MAC
Cutts, D
da Motta, H
Davies, B
Davies, G
Davis, GA
De, K
de Jong, P
de Jong, SJ
De la Cruz-Burelo, E
Martins, CD
Dean, S
Del Signore, K
Deliot, F
Delsart, PA
Demarteau, M
Demina, R
Demine, P
Denisov, D
Denisov, SP
Desai, S
Diehl, HT
Diesburg, M
Doidge, M
Dong, H
Doulas, S
Duflot, L
Dugad, SR
Duperrin, A
Dyer, J
Dyshkant, A
Eads, M
Edmunds, D
Edwards, T
Ellison, J
Elmsheuser, J
Eltzroth, JT
Elvira, VD
Eno, S
Ermolov, P
Eroshin, OV
Estrada, J
Evans, D
Evans, H
Evdokimov, A
Evdokimov, VN
Fast, J
Fatakia, SN
Fein, D
Feligioni, L
Ferbel, T
Fiedler, F
Filthaut, F
Fisk, HE
Fleuret, F
Fortner, M
Fox, H
Freeman, W
Fu, S
Fuess, S
Galea, CF
Gallas, E
Galyaev, E
Gao, M
Garcia, C
Garcia-Bellido, A
Gardner, J
Gavrilov, V
Gele, D
Gelhaus, R
Genser, K
Gerber, CE
Gershtein, Y
Geurkov, G
Ginther, G
Goldmann, K
Golling, T
Gomez, B
Gounder, K
Goussiou, A
Graham, G
Grannis, PD
Greder, S
Green, JA
Greenlee, H
Greenwood, ZD
Gregores, EM
Grinstein, S
Grivaz, JF
Groer, L
Grunendahl, S
Grunewald, MW
Gu, W
Gurzhiev, SN
Gutierrez, G
Gutierrez, P
Haas, A
Hadley, NJ
Haggerty, H
Hagopian, S
Hall, I
Hall, RE
Han, C
Han, L
Hanagaki, K
Hanlet, P
Harder, K
Hauptman, JM
Hauser, R
Hays, C
Hays, J
Hebert, C
Hedin, D
Heinmiller, JM
Heinson, AP
Heintz, U
Hensel, C
Hesketh, G
Hildreth, MD
Hirosky, R
Hobbs, JD
Hoeneisen, B
Hohlfeld, M
Hong, SJ
Hooper, R
Hou, S
Hu, Y
Huang, J
Huang, Y
Iashvili, I
Illingworth, R
Ito, AS
Jabeen, S
Jaffre, M
Jain, S
Jain, V
Jakobs, K
Jenkins, A
Jesik, R
Jiang, Y
Johns, K
Johnson, M
Johnson, P
Jonckheere, A
Jonsson, P
Jostlein, H
Juste, A
Kado, MM
Kafer, D
Kahl, W
Kahn, S
Kajfasz, E
Kalinin, AM
Kalk, J
Karmanov, D
Kasper, J
Kau, D
Ke, Z
Kehoe, R
Kermiche, S
Kesisoglou, S
Khanov, A
Kharchilava, A
Kharzheev, YM
Kim, KH
Klima, B
Klute, M
Kohli, JM
Kopal, M
Korablev, V
Kotcher, J
Kothari, B
Kotwal, AV
Koubarovsky, A
Kouchner, A
Kouznetsov, O
Kozelov, AV
Kozminski, J
Krane, J
Krishnaswamy, MR
Krzywdzinski, S
Kubantsev, M
Kuleshov, S
Kulik, Y
Kunori, S
Kupco, A
Kurca, T
Kuznetsov, VE
Lager, S
Lahrichi, N
Landsberg, G
Lazoflores, J
Le Bihan, AC
Lebrun, P
Lee, SW
Lee, WM
Leflat, A
Leggett, C
Lehner, F
Leonidopoulos, C
Lewis, P
Li, J
Li, QZ
Li, X
Lima, JGR
Lincoln, D
Linn, SL
Linnemann, J
Lipton, R
Lobo, L
Lobodenko, A
Lokajicek, M
Lounis, A
Lu, J
Lubatti, HJ
Lucotte, A
Lueking, L
Luo, C
Lynker, M
Lyon, AL
Maciel, AKA
Madaras, RJ
Magnan, AM
Maity, M
Mal, PK
Malik, S
Malyshev, VL
Manankov, V
Mao, HS
Maravin, Y
Marshall, T
Martens, M
Martin, MI
Mattingly, SEK
Mayorov, AA
McCarthy, R
McCroskey, R
McMahon, T
Meder, D
Melanson, HL
Melnitchouk, A
Meng, X
Merkin, M
Merritt, KW
Meyer, A
Miao, C
Miettinen, H
Mihalcea, D
Mishra, CS
Mitrevski, J
Mokhov, N
Molina, J
Mondal, NK
Montgomery, HE
Moore, RW
Mostafa, M
Muanza, GS
Mulders, M
Mutaf, YD
Nagy, E
Nang, F
Narain, M
Narasimham, VS
Naumann, NA
Neal, HA
Negret, JP
Nelson, S
Neustroev, P
Noeding, C
Nomerotski, A
Novaes, SF
Nunnemann, T
Nurse, E
O'Dell, V
O'Neil, DC
Oguri, V
Oliveira, N
Olivier, B
Oshima, N
Garzon, GJOY
Padley, P
Papageorgiou, K
Parashar, N
Park, J
Park, SK
Parsons, J
Partridge, R
Parua, N
Patwa, A
Perea, PM
Perez, E
Peters, O
Petroff, P
Petteni, M
Phaf, L
Piegaia, R
Podesta-Lerma, PLM
Podstavkov, VM
Pope, BG
Popkov, E
da Silva, WLP
Prosper, HB
Protopopescu, S
Przybycien, MB
Qian, J
Quadt, A
Quinn, B
Rani, KJ
Rapidis, PA
Ratoff, PN
Reay, NW
Renardy, JF
Reucroft, S
Rha, J
Ridel, M
Rijssenbeek, M
Ripp-Baudot, I
Rizatdinova, F
Royon, C
Rubinov, P
Ruchti, R
Sabirov, BM
Sajot, G
Sanchez-Hernandez, A
Sanders, MP
Santoro, A
Savage, G
Sawyer, L
Scanlon, T
Schamberger, RD
Schellman, H
Schieferdecker, P
Schmitt, C
Schukin, A
Schwartzman, A
Schwienhorst, R
Sengupta, S
Shabalina, E
Shary, V
Shephard, WD
Shpakov, D
Sidwell, RA
Simak, V
Sirotenko, V
Skow, D
Slattery, P
Smith, RP
Smolek, K
Snow, GR
Snow, J
Snyder, S
Soldner-Rembold, S
Song, X
Song, Y
Sonnenschein, L
Sopczak, A
Sorin, V
Sosebee, M
Soustruznik, K
Souza, M
Stanton, NR
Stark, J
Steele, J
Steinbruck, G
Stevenson, K
Stolin, V
Stone, A
Stoyanova, DA
Strandberg, J
Strang, MA
Strauss, M
Strohmer, R
Strovink, M
Stutte, L
Sznajder, A
Talby, M
Tamburello, P
Taylor, W
Telford, P
Temple, J
Tentindo-Repond, S
Thomas, E
Thooris, B
Tomoto, M
Toole, T
Torborg, J
Towers, S
Trefzger, T
Trincaz-Duvoid, S
Trippe, TG
Tuchming, B
Turcot, AS
Tuts, PM
Uvarov, L
Uvarov, S
Uzunyan, S
Vachon, B
Van Kooten, R
van Leeuwen, WM
Varelas, N
Varnes, EW
Vasilyev, I
Verdier, P
Vertogradov, LS
Verzocchi, M
Villeneuve-Seguier, F
Vlimant, JR
Von Toerne, E
Vreeswijk, M
Anh, TV
Wahl, HD
Walker, R
Wallace, N
Wang, ZM
Warchol, J
Warsinsky, M
Watts, G
Wayne, M
Weber, M
Weerts, H
Wegner, M
White, A
White, V
Whiteson, D
Wicke, D
Wijngaarden, DA
Wilson, GW
Wimpenny, SJ
Wittlin, J
Wlodek, T
Wobisch, M
Womersley, J
Wood, DR
Wu, Z
Wyatt, TR
Xu, Q
Xuan, N
Yamada, R
Yasuda, T
Yatsunenko, YA
Yen, Y
Yip, K
Youn, SW
Yu, J
Yurkewicz, A
Zabi, A
Zatserklyaniy, A
Zdrazil, M
Zeitnitz, C
Zhang, B
Zhang, D
Zhang, X
Zhao, T
Zhao, Z
Zheng, H
Zhou, B
Zhou, Z
Zhu, J
Zielinski, M
Zieminska, D
Zieminski, A
Zitoun, R
Zutshi, V
Zverev, EG
Zylberstejn, A
AF Abazov, VM
Abbott, B
Abolins, M
Acharya, BS
Adams, DL
Adams, M
Adams, T
Agelou, M
Agram, JL
Ahmed, SN
Ahn, SH
Alexeev, GD
Alkhazov, G
Alton, A
Alverson, G
Alves, GA
Anderson, S
Andrieu, B
Arnoud, Y
Askew, A
Asman, B
Autermann, C
Avila, C
Babukhadia, L
Bacon, TC
Baden, A
Baffioni, S
Baldin, B
Balm, PW
Banerjee, S
Barberis, E
Bargassa, P
Baringer, P
Barnes, C
Barreto, J
Bartlett, JF
Bassler, U
Bauer, D
Bean, A
Beauceron, S
Beaudette, F
Begel, M
Beri, SB
Bernardi, G
Bertram, I
Besancon, M
Besson, A
Beuselinck, R
Bezzubov, VA
Bhat, PC
Bhatnagar, V
Bhattacharjee, M
Binder, M
Bischoff, A
Black, KM
Blackler, I
Blazey, G
Blekman, F
Bloch, D
Blumenschein, U
Boehnlein, A
Bolton, TA
Bonamy, P
Borcherding, F
Borissov, G
Bos, K
Bose, T
Boswell, C
Brandt, A
Briskin, G
Brock, R
Brooijmans, G
Bross, A
Buchholz, D
Buehler, M
Buescher, V
Burdin, S
Burnett, TH
Busato, E
Butler, JM
Bystricky, J
Canelli, F
Carvalho, W
Casey, BCK
Casey, D
Cason, NM
Castilla-Valdez, H
Chakrabarti, S
Chakraborty, D
Chan, KM
Chandra, A
Chapin, D
Charles, F
Cheu, E
Chevalier, L
Cho, DK
Choi, S
Chopra, S
Christiansen, T
Christofek, L
Claes, D
Clark, AR
Clement, C
Coadou, Y
Colling, DJ
Coney, L
Connolly, B
Cooper, WE
Coppage, D
Corcoran, M
Coss, J
Cothenet, A
Cousinou, MC
Crepe-Renaudin, S
Cristetiu, M
Cummings, MAC
Cutts, D
da Motta, H
Davies, B
Davies, G
Davis, GA
De, K
de Jong, P
de Jong, SJ
De la Cruz-Burelo, E
Martins, CD
Dean, S
Del Signore, K
Deliot, F
Delsart, PA
Demarteau, M
Demina, R
Demine, P
Denisov, D
Denisov, SP
Desai, S
Diehl, HT
Diesburg, M
Doidge, M
Dong, H
Doulas, S
Duflot, L
Dugad, SR
Duperrin, A
Dyer, J
Dyshkant, A
Eads, M
Edmunds, D
Edwards, T
Ellison, J
Elmsheuser, J
Eltzroth, JT
Elvira, VD
Eno, S
Ermolov, P
Eroshin, OV
Estrada, J
Evans, D
Evans, H
Evdokimov, A
Evdokimov, VN
Fast, J
Fatakia, SN
Fein, D
Feligioni, L
Ferbel, T
Fiedler, F
Filthaut, F
Fisk, HE
Fleuret, F
Fortner, M
Fox, H
Freeman, W
Fu, S
Fuess, S
Galea, CF
Gallas, E
Galyaev, E
Gao, M
Garcia, C
Garcia-Bellido, A
Gardner, J
Gavrilov, V
Gele, D
Gelhaus, R
Genser, K
Gerber, CE
Gershtein, Y
Geurkov, G
Ginther, G
Goldmann, K
Golling, T
Gomez, B
Gounder, K
Goussiou, A
Graham, G
Grannis, PD
Greder, S
Green, JA
Greenlee, H
Greenwood, ZD
Gregores, EM
Grinstein, S
Grivaz, JF
Groer, L
Grunendahl, S
Grunewald, MW
Gu, W
Gurzhiev, SN
Gutierrez, G
Gutierrez, P
Haas, A
Hadley, NJ
Haggerty, H
Hagopian, S
Hall, I
Hall, RE
Han, C
Han, L
Hanagaki, K
Hanlet, P
Harder, K
Hauptman, JM
Hauser, R
Hays, C
Hays, J
Hebert, C
Hedin, D
Heinmiller, JM
Heinson, AP
Heintz, U
Hensel, C
Hesketh, G
Hildreth, MD
Hirosky, R
Hobbs, JD
Hoeneisen, B
Hohlfeld, M
Hong, SJ
Hooper, R
Hou, S
Hu, Y
Huang, J
Huang, Y
Iashvili, I
Illingworth, R
Ito, AS
Jabeen, S
Jaffre, M
Jain, S
Jain, V
Jakobs, K
Jenkins, A
Jesik, R
Jiang, Y
Johns, K
Johnson, M
Johnson, P
Jonckheere, A
Jonsson, P
Jostlein, H
Juste, A
Kado, MM
Kafer, D
Kahl, W
Kahn, S
Kajfasz, E
Kalinin, AM
Kalk, J
Karmanov, D
Kasper, J
Kau, D
Ke, Z
Kehoe, R
Kermiche, S
Kesisoglou, S
Khanov, A
Kharchilava, A
Kharzheev, YM
Kim, KH
Klima, B
Klute, M
Kohli, JM
Kopal, M
Korablev, V
Kotcher, J
Kothari, B
Kotwal, AV
Koubarovsky, A
Kouchner, A
Kouznetsov, O
Kozelov, AV
Kozminski, J
Krane, J
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Wyatt, TR
Xu, Q
Xuan, N
Yamada, R
Yasuda, T
Yatsunenko, YA
Yen, Y
Yip, K
Youn, SW
Yu, J
Yurkewicz, A
Zabi, A
Zatserklyaniy, A
Zdrazil, M
Zeitnitz, C
Zhang, B
Zhang, D
Zhang, X
Zhao, T
Zhao, Z
Zheng, H
Zhou, B
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Zielinski, M
Zieminska, D
Zieminski, A
Zitoun, R
Zutshi, V
Zverev, EG
Zylberstejn, A
CA D0 Collaboration
TI Search for doubly charged Higgs boson pair production in the decay to
mu(+)mu(+)mu(-)mu(-) in p(p)over-bar collisions at root s=1.96 TeV
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID STANDARD MODEL; LEPTON-NUMBER; VIOLATION; SYMMETRY; DETECTOR
AB A search for pair production of doubly charged Higgs bosons in the process p (p) over bar -->H++H---->mu(+)mu(+)mu(-)mu(-) is performed with the D0 run II detector at the Fermilab Tevatron. The analysis is based on a sample of inclusive dimuon data collected at an energy of roots=1.96 TeV, corresponding to an integrated luminosity of 113 pb(-1). In the absence of a signal, 95% confidence level mass limits of M(H-L(+/-+/-))>118.4 GeV/c(2) and M(H-R(+/-+/-))>98.2 GeV/c(2) are set for left-handed and right-handed doubly charged Higgs bosons, respectively, assuming 100% branching into muon pairs.
C1 Joint Inst Nucl Res, Dubna, Russia.
Univ Buenos Aires, Buenos Aires, DF, Argentina.
Ctr Brasileiro Pesquisas Fis, LAFEX, Rio De Janeiro, Brazil.
Univ Estado Rio De Janeiro, Rio De Janeiro, Brazil.
Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil.
Univ Alberta, Edmonton, AB, Canada.
Simon Fraser Univ, Burnaby, BC V5A 1S6, Canada.
Inst High Energy Phys, Beijing 100039, Peoples R China.
Univ Los Andes, Bogota, Colombia.
Charles Univ, Ctr Particle Phys, Prague, Czech Republic.
Czech Tech Univ, CR-16635 Prague, Czech Republic.
Acad Sci, Inst Phys, Ctr Particle Phys, Prague, Czech Republic.
Univ San Francisco Quito, Quito, Ecuador.
Univ Grenoble 1, Lab Phys Subatom & Cosmol, IN2P3, CNRS, Grenoble, France.
Univ Mediterranee, CPPM, IN2P3, CNRS, Marseille, France.
IN2P3 CNRS, Accelerateur Lineaire Lab, Orsay, France.
Univ Paris 06, LPNHE, IN2P3 CNRS, Paris, France.
Univ Paris 07, LPNHE, IN2P3 CNRS, Paris, France.
CEA, DAPNIA, Serv Phys Particules, Saclay, France.
Univ Strasbourg 1, IReS, IN2P3 CNRS, Strasbourg, France.
Univ Haute Alsace, Mulhouse, France.
Univ Lyon 1, Inst Phys Nucl Lyon, IN2P3 CNRS, F-69622 Villeurbanne, France.
Rhein Westfal TH Aachen, Phys Inst A, D-5100 Aachen, Germany.
Univ Bonn, Inst Phys, D-5300 Bonn, Germany.
Univ Freiburg, Inst Phys, Freiburg, Germany.
Univ Mainz, Inst Phys, D-6500 Mainz, Germany.
Univ Munich, Munich, Germany.
Univ Wuppertal, Fachbereich Phys, Wuppertal, Germany.
Panjab Univ, Chandigarh 160014, India.
Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India.
Univ Coll Dublin, Dublin 2, Ireland.
Korea Univ, Korea Detector Lab, Seoul 136701, South Korea.
CINVESTAV, Mexico City 14000, DF, Mexico.
NIKHEF, FOM Inst, Amsterdam, Netherlands.
Univ Amsterdam, NIKHEF, Amsterdam, Netherlands.
Univ Nijmegen, NIKHEF, Nijmegen, Netherlands.
Joint Inst Nucl Res, Dubna, Russia.
Inst Theoret & Expt Phys, Moscow 117259, Russia.
Moscow MV Lomonosov State Univ, Moscow, Russia.
Inst High Energy Phys, Protvino, Russia.
Petersburg Nucl Phys Inst, St Petersburg, Russia.
Lund Univ, Lund, Sweden.
Royal Inst Technol, Stockholm, Sweden.
Stockholm Univ, S-10691 Stockholm, Sweden.
Uppsala Univ, Uppsala, Sweden.
Univ Lancaster, Lancaster, England.
Univ London Imperial Coll Sci Technol & Med, London, England.
Univ Manchester, Manchester, Lancs, England.
Univ Arizona, Tucson, AZ 85721 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Calif State Univ Fresno, Fresno, CA 93740 USA.
Univ Calif Riverside, Riverside, CA 92521 USA.
Florida State Univ, Tallahassee, FL 32306 USA.
Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
Univ Illinois, Chicago, IL 60607 USA.
No Illinois Univ, De Kalb, IL 60115 USA.
Northwestern Univ, Eston, IL 60208 USA.
Indiana Univ, Bloomington, IN 47405 USA.
Univ Notre Dame, Notre Dame, IN 46556 USA.
Iowa State Univ Sci & Technol, Ames, IA 50011 USA.
Univ Kansas, Lawrence, KS 66045 USA.
Kansas State Univ, Manhattan, KS 66506 USA.
Louisiana Tech Univ, Ruston, LA 71272 USA.
Univ Maryland, College Pk, MD 20742 USA.
Boston Univ, Boston, MA 02215 USA.
Northeastern Univ, Boston, MA 02115 USA.
Univ Michigan, Ann Arbor, MI 48109 USA.
Michigan State Univ, E Lansing, MI 48824 USA.
Univ Mississippi, University, MS 38677 USA.
Univ Nebraska, Lincoln, NE 68588 USA.
Princeton Univ, Princeton, NJ 08544 USA.
Columbia Univ, New York, NY 10027 USA.
Univ Rochester, Rochester, NY 14627 USA.
SUNY Stony Brook, Stony Brook, NY 11794 USA.
Brookhaven Natl Lab, Upton, NY 11973 USA.
Langston Univ, Langston, OK 73050 USA.
Univ Oklahoma, Norman, OK 73019 USA.
Brown Univ, Providence, RI 02912 USA.
Univ Texas, Arlington, TX 76019 USA.
Rice Univ, Houston, TX 77005 USA.
Univ Virginia, Charlottesville, VA 22901 USA.
Univ Washington, Seattle, WA 98195 USA.
RP Abazov, VM (reprint author), Joint Inst Nucl Res, Dubna, Russia.
RI Sharyy, Viatcheslav/F-9057-2014; Sznajder, Andre/L-1621-2016; Canelli,
Florencia/O-9693-2016; Alves, Gilvan/C-4007-2013; Deliot,
Frederic/F-3321-2014; Telford, Paul/B-6253-2011; Nomerotski,
Andrei/A-5169-2010; Gutierrez, Phillip/C-1161-2011; Leflat,
Alexander/D-7284-2012; Merkin, Mikhail/D-6809-2012; Novaes,
Sergio/D-3532-2012; Yip, Kin/D-6860-2013; Kuleshov, Sergey/D-9940-2013;
De, Kaushik/N-1953-2013; Oguri, Vitor/B-5403-2013
OI Sharyy, Viatcheslav/0000-0002-7161-2616; Sznajder,
Andre/0000-0001-6998-1108; Canelli, Florencia/0000-0001-6361-2117;
Novaes, Sergio/0000-0003-0471-8549; Yip, Kin/0000-0002-8576-4311;
Kuleshov, Sergey/0000-0002-3065-326X; De, Kaushik/0000-0002-5647-4489;
NR 34
TC 62
Z9 62
U1 0
U2 4
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD OCT 1
PY 2004
VL 93
IS 14
AR 141801
DI 10.1103/PhysRevLett.93.141801
PG 8
WC Physics, Multidisciplinary
SC Physics
GA 858SL
UT WOS:000224211900012
ER
PT J
AU Acosta, D
Affolder, T
Akimoto, H
Albrow, MG
Ambrose, D
Amidei, D
Anikeev, K
Antos, J
Apollinari, G
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de Barbaro, P
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Burkett, K
Busetto, G
Byrum, KL
Cabrera, S
Calafiura, P
Campbell, M
Carithers, W
Carlson, J
Carlsmith, D
Caskey, W
Castro, A
Cauz, D
Cerri, A
Cerrito, L
Chan, AW
Chang, PS
Chang, PT
Chapman, J
Chen, C
Chen, YC
Cheng, MT
Chertok, M
Chiarelli, G
Chirikov-Zorin, I
Chlachidze, G
Chlebana, F
Christofek, L
Chu, ML
Chung, JY
Chung, WH
Chung, YS
Ciobanu, CI
Clark, AG
Coca, M
Connolly, A
Convery, M
Conway, J
Cordelli, M
Cranshaw, J
Culbertson, R
Dagenhart, D
D'Auria, S
De Cecco, S
DeJongh, F
Dell'Agnello, S
Dell'Orso, M
Demers, S
Demortier, L
Deninno, M
Pedis, DD
Derwent, PF
Devlin, T
Dionisi, C
Dittmann, JR
Dominguez, A
Donati, S
D'Onofrio, M
Dorigo, T
Eddy, N
Einsweiler, K
Engels, E
Erbacher, R
Errede, D
Errede, S
Eusebi, R
Fan, Q
Farrington, S
Feild, RG
Fernandez, JP
Ferretti, C
Field, RD
Fiori, I
Flaugher, B
Flores-Castillo, LR
Foster, GW
Franklin, M
Freeman, J
Friedman, J
Fukui, Y
Furic, I
Galeotti, S
Gallas, A
Gallinaro, M
Gao, T
Garcia-Sciveres, M
Garfinkel, AF
Gatti, P
Gay, C
Gerdes, DW
Gerstein, E
Giagu, S
Giannetti, P
Giolo, K
Giordani, M
Giromini, P
Glagolev, V
Glenzinski, D
Gold, M
Goldschmidt, N
Goldstein, J
Gomez, G
Goncharov, M
Gorelov, I
Goshaw, AT
Gotra, Y
Goulianos, K
Green, C
Gresele, A
Grim, G
Grosso-Pilcher, C
Guenther, M
Guillian, G
da Costa, JG
Haas, RM
Haber, C
Hahn, SR
Halkiadakis, E
Hall, C
Handa, T
Handler, R
Happacher, F
Hara, K
Hardman, AD
Harris, RM
Hartmann, F
Hatakeyama, K
Hauser, J
Heinrich, J
Heiss, A
Hennecke, M
Herndon, M
Hill, C
Hocker, A
Hoffman, KD
Hollebeek, R
Holloway, L
Hou, S
Huffman, BT
Hughes, R
Huston, J
Huth, J
Ikeda, H
Issever, C
Incandela, J
Introzzi, G
Iori, M
Ivanov, A
Iwai, J
Iwata, Y
Iyutin, B
James, E
Jones, M
Joshi, U
Kambara, H
Kamon, T
Kaneko, T
Kang, J
Unel, MK
Karr, K
Kartal, S
Kasha, H
Kato, Y
Keaffaber, TA
Kelley, K
Kelly, M
Kennedy, RD
Kephart, R
Khazins, D
Kikuchi, T
Kilminster, B
Kim, BJ
Kim, DH
Kim, HS
Kim, MJ
Kim, SB
Kim, SH
Kim, TH
Kim, YK
Kirby, M
Kirk, M
Kirsch, L
Klimenko, S
Koehn, P
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Kotelnikov, K
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Kuwabara, T
Kuznetsova, N
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Lai, N
Lami, S
Lammel, S
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Lannon, K
Lancaster, M
Lander, R
Lath, A
Latino, G
LeCompte, T
Le, Y
Lee, J
Lee, SW
Leonardo, N
Leone, S
Lewis, JD
Li, K
Lin, CS
Lindgren, M
Liss, TM
Liu, JB
Liu, T
Liu, YC
Litvintsev, DO
Lobban, O
Lockyer, NS
Loginov, A
Loken, J
Loreti, M
Lucchesi, D
Lukens, P
Lusin, S
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Lys, J
Madrak, R
Maeshima, K
Maksimovic, P
Malferrari, L
Mangano, M
Manca, G
Mariotti, M
Martignon, G
Martin, M
Martin, A
Martin, V
Martinez, M
Matthews, JAJ
Mazzanti, P
McFarland, KS
McIntyre, P
Menguzzato, M
Menzione, A
Merkel, P
Mesropian, C
Meyer, A
Miao, T
Miller, R
Miller, JS
Minato, H
Miscetti, S
Mishina, M
Mitselmakher, G
Miyazaki, Y
Moggi, N
Moore, E
Moore, R
Morita, Y
Moulik, T
Mulhearn, M
Mukherjee, A
Muller, T
Munar, A
Murat, P
Murgia, S
Nachtman, J
Nagaslaev, V
Nahn, S
Nakada, H
Nakano, I
Napora, R
Niell, F
Nelson, C
Nelson, T
Neu, C
Neubauer, MS
Neuberger, D
Newman-Holmes, C
Ngan, CYP
Nigmanov, T
Niu, H
Nodulman, L
Nomerotski, A
Oh, SH
Oh, YD
Ohmoto, T
Ohsugi, T
Oishi, R
Okusawa, T
Olsen, J
Orejudos, W
Pagliarone, C
Palmonari, F
Paoletti, R
Papadimitriou, V
Partos, D
Patrick, J
Pauletta, G
Paulini, M
Pauly, T
Paus, C
Pellett, D
Penzo, A
Pescara, L
Phillips, TJ
Piacentino, G
Piedra, J
Pitts, KT
Pompos, A
Pondrom, L
Pope, G
Pratt, T
Prokoshin, F
Proudfoot, J
Ptohos, F
Pukhov, O
Punzi, G
Rademacker, J
Rakitine, A
Ratnikov, F
Ray, H
Reher, D
Reichold, A
Renton, P
Rescigno, M
Ribon, A
Riegler, W
Rimondi, F
Ristori, L
Riveline, M
Robertson, WJ
Rodrigo, T
Rolli, S
Rosenson, L
Roser, R
Rossin, R
Rott, C
Roy, A
Ruiz, A
Ryan, D
Safonov, A
St Denis, R
Sakumoto, WK
Saltzberg, D
Sanchez, C
Sansoni, A
Santi, L
Sarkar, S
Sato, H
Savard, P
Savoy-Navarro, A
Schlabach, P
Schmidt, EE
Schmidt, MP
Schmitt, M
Scodellaro, L
Scott, A
Scribano, A
Sedov, A
Seidel, S
Seiya, Y
Semenov, A
Semeria, F
Shah, T
Shapiro, MD
Shepard, PF
Shibayama, T
Shimojima, M
Shochet, M
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Siegrist, J
Sill, A
Sinervo, P
Singh, P
Slaughter, AJ
Sliwa, K
Snider, FD
Snihur, R
Solodsky, A
Speer, T
Spezziga, M
Sphicas, P
Spinella, F
Spiropulu, M
Spiegel, L
Steele, J
Stefanini, A
Strologas, J
Strumia, F
Stuart, D
Sukhanov, A
Sumorok, K
Suzuki, T
Takano, T
Takashima, R
Takikawa, K
Tamburello, P
Tanaka, M
Tannenbaum, B
Tecchio, M
Tesarek, RJ
Teng, PK
Terashi, K
Tether, S
Thom, J
Thompson, AS
Thomson, E
Thurman-Keup, R
Tipton, P
Tkaczyk, S
Toback, D
Tollefson, K
Tonelli, D
Tonnesmann, M
Toyoda, H
Trischuk, W
de Troconiz, JF
Tseng, J
Tsybychev, D
Turini, N
Ukegawa, F
Unverhau, T
Vaiciulis, T
Varganov, A
Vataga, E
Vejcik, S
Velev, G
Veramendi, G
Vidal, R
Vila, I
Vilar, R
Volobouev, I
von der Mey, M
Vucinic, D
Wagner, RG
Wagner, RL
Wagner, W
Wan, Z
Wang, C
Wang, MJ
Wang, SM
Ward, B
Waschke, S
Watanabe, T
Waters, D
Watts, T
Weber, M
Wenzel, H
Wester, WC
Whitehouse, B
Wicklund, AB
Wicklund, E
Wilkes, T
Williams, HH
Wilson, P
Winer, BL
Winn, D
Wolbers, S
Wolinski, D
Wolinski, J
Wolinski, S
Wolter, M
Worm, S
Wu, X
Wurthwein, F
Wyss, J
Yang, UK
Yao, W
Yeh, GP
Yeh, P
Yi, K
Yoh, J
Yosef, C
Yoshida, T
Yu, I
Yu, S
Yu, Z
Yun, JC
Zanello, L
Zanetti, A
Zetti, F
Zucchelli, S
CA CDF Collaboration
TI Inclusive double-Pomeron exchange at the Fermilab tevatron (p)over-barp
collider
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID DIFFRACTION
AB We report results from a study of events with a double-Pomeron exchange topology produced in (p) over barp collisions at roots=1800 GeV. The events are characterized by a leading antiproton and a large rapidity gap on the outgoing proton side. We find that the differential production cross section agrees in shape with predictions based on Regge theory and factorization, and that the ratio of double-Pomeron exchange to single diffractive production rates is relatively unsuppressed as compared to the O(10) suppression factor previously measured in single diffractive production.
C1 Univ Florida, Gainesville, FL 32611 USA.
Acad Sinica, Inst Phys, Taipei 11529, Taiwan.
Argonne Natl Lab, Argonne, IL 60439 USA.
Univ Bologna, Ist Nazl Fis Nucl, I-40127 Bologna, Italy.
Brandeis Univ, Waltham, MA 02254 USA.
Univ Calif Davis, Davis, CA 95616 USA.
Univ Calif Los Angeles, Los Angeles, CA 90024 USA.
Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
Univ Cantabria, Inst Fis Cantabria, CSIC, E-39005 Santander, Spain.
Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
Joint Inst Nucl Res, RU-141980 Dubna, Russia.
Duke Univ, Durham, NC 27708 USA.
Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
Univ Geneva, CH-1211 Geneva 4, Switzerland.
Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland.
Harvard Univ, Cambridge, MA 02138 USA.
Hiroshima Univ, Higashihiroshima 724, Japan.
Univ Illinois, Urbana, IL 61801 USA.
Johns Hopkins Univ, Baltimore, MD 21218 USA.
Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany.
High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 305, Japan.
Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea.
Sungkyunkwan Univ, Suwon 440746, South Korea.
Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
UCL, London WC1E 6BT, England.
MIT, Cambridge, MA 02139 USA.
Univ Michigan, Ann Arbor, MI 48109 USA.
Inst Theoret & Expt Phys, Moscow 117259, Russia.
Univ New Mexico, Albuquerque, NM 87131 USA.
Northwestern Univ, Evanston, IL 60208 USA.
Ohio State Univ, Columbus, OH 43210 USA.
Osaka City Univ, Osaka 558, Japan.
Univ Oxford, Oxford OX1 3RH, England.
Univ Padua, Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy.
Univ Penn, Philadelphia, PA 19104 USA.
Univ Pisa, Ist Nazl Fis Nucl, I-56100 Pisa, Italy.
Scuola Normale Super Pisa, I-56100 Pisa, Italy.
Univ Pittsburgh, Pittsburgh, PA 15260 USA.
Purdue Univ, W Lafayette, IN 47907 USA.
Univ Rochester, Rochester, NY 14627 USA.
Rockefeller Univ, New York, NY 10021 USA.
Univ Rome La Sapienza 1, Inst Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy.
Rutgers State Univ, Piscataway, NJ 08855 USA.
Texas A&M Univ, College Stn, TX 77843 USA.
Texas Tech Univ, Lubbock, TX 79409 USA.
Univ Toronto, Inst Particle Phys, Toronto, ON M5S 1A7, Canada.
Univ Trieste, Ist Nazl Fis Nucl, Udine, Italy.
Univ Tsukuba, Tsukuba, Ibaraki 305, Japan.
Tufts Univ, Medford, MA 02155 USA.
Waseda Univ, Tokyo 169, Japan.
Univ Wisconsin, Madison, WI 53706 USA.
Yale Univ, New Haven, CT 06520 USA.
Seoul Natl Univ, Seoul 151742, South Korea.
Michigan State Univ, E Lansing, MI 48824 USA.
RP Acosta, D (reprint author), Univ Florida, Gainesville, FL 32611 USA.
RI Kim, Soo-Bong/B-7061-2014; Gallas Torreira, Abraham Antonio/K-6508-2014;
Scodellaro, Luca/K-9091-2014; Connolly, Amy/J-3958-2013; Paulini,
Manfred/N-7794-2014; Cabrera Urban, Susana/H-1376-2015; Introzzi,
Gianluca/K-2497-2015; Gorelov, Igor/J-9010-2015; Leonardo,
Nuno/M-6940-2016; Lancaster, Mark/C-1693-2008; Vucinic,
Dejan/C-2406-2008; Nomerotski, Andrei/A-5169-2010; Ruiz,
Alberto/E-4473-2011; De Cecco, Sandro/B-1016-2012; Wolter,
Marcin/A-7412-2012; St.Denis, Richard/C-8997-2012; Azzi,
Patrizia/H-5404-2012; manca, giulia/I-9264-2012; Punzi,
Giovanni/J-4947-2012; Chiarelli, Giorgio/E-8953-2012; Ivanov,
Andrew/A-7982-2013; Prokoshin, Fedor/E-2795-2012
OI Gallas Torreira, Abraham Antonio/0000-0002-2745-7954; Scodellaro,
Luca/0000-0002-4974-8330; Paulini, Manfred/0000-0002-6714-5787;
Introzzi, Gianluca/0000-0002-1314-2580; Gorelov,
Igor/0000-0001-5570-0133; Leonardo, Nuno/0000-0002-9746-4594; Gallinaro,
Michele/0000-0003-1261-2277; Turini, Nicola/0000-0002-9395-5230; Ruiz,
Alberto/0000-0002-3639-0368; Azzi, Patrizia/0000-0002-3129-828X; Punzi,
Giovanni/0000-0002-8346-9052; Chiarelli, Giorgio/0000-0001-9851-4816;
Ivanov, Andrew/0000-0002-9270-5643; Prokoshin, Fedor/0000-0001-6389-5399
NR 20
TC 14
Z9 14
U1 1
U2 7
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD OCT 1
PY 2004
VL 93
IS 14
AR 141601
DI 10.1103/PhysRevLett.93.141601
PG 7
WC Physics, Multidisciplinary
SC Physics
GA 858SL
UT WOS:000224211900011
ER
PT J
AU Acosta, D
Affolder, T
Akimoto, T
Albrow, MG
Ambrose, D
Amerio, S
Amidei, D
Anastassov, A
Anikeev, K
Annovi, A
Antos, J
Aoki, M
Apollinari, G
Arisawa, T
Arguin, JF
Artikov, A
Ashmanskas, W
Attal, A
Azfar, F
Azzi-Bacchetta, P
Bacchetta, N
Bachacou, H
Badgett, W
Barbaro-Galtieri, A
Barker, GJ
Barnes, VE
Barnett, BA
Baroiant, S
Barone, M
Bauer, G
Bedeschi, F
Behari, S
Belforte, S
Bellettini, G
Bellinger, J
Benjamin, D
Beretvas, A
Bhatti, A
Binkley, M
Bisello, D
Bishai, M
Blair, RE
Blocker, C
Bloom, K
Blumenfeld, B
Bocci, A
Bodek, A
Bolla, G
Bolshov, A
Booth, PSL
Bortoletto, D
Boudreau, J
Bourov, S
Bromberg, C
Brubaker, E
Budagov, J
Budd, HS
Burkett, K
Busetto, G
Bussey, P
Byrum, KL
Cabrera, S
Calafiura, P
Campanelli, M
Campbell, M
Canepa, A
Casarsa, M
Carlsmith, D
Carron, S
Carosi, R
Castro, A
Catastini, P
Cauz, D
Cerri, A
Cerri, C
Cerrito, L
Chapman, J
Chen, C
Chen, YC
Chertok, M
Chiarelli, G
Chlachidze, G
Chlebana, F
Cho, I
Cho, K
Chokheli, D
Chu, ML
Chuang, S
Chung, JY
Chung, WH
Chung, YS
Ciobano, CI
Ciocci, MA
Clark, AG
Clark, D
Coca, M
Connolly, A
Convery, M
Conway, J
Cordelli, M
Cortiana, G
Cranshaw, J
Cuevas, J
Culbertson, R
Currat, C
Cyr, D
Dagenhart, D
Da Ronco, S
D'Auria, S
de Barbaro, P
De Cecco, S
De Lentdecker, G
Dell'Agnello, S
Dell'Orso, M
Demers, S
Demortier, L
Deninno, M
De Pedis, D
Derwent, PF
Dionisi, C
Dittmann, JR
Doksus, P
Dominguez, A
Donati, S
Donega, M
D'Onofrio, M
Dorigo, T
Drollinger, V
Ebina, K
Eddy, N
Ely, R
Erbacher, R
Erdmann, M
Errede, D
Errede, S
Eusebi, R
Fang, HC
Farrington, S
Fedorko, I
Feild, RG
Feindt, M
Fernandez, JP
Ferretti, C
Field, RD
Fiori, I
Flanagan, G
Flaugher, B
Flores-Castillo, LR
Foland, A
Forrester, S
Foster, GW
Franklin, M
Frisch, H
Fujii, Y
Furic, I
Gajjar, A
Gallas, A
Galyardt, J
Gallinaro, M
Garcia-Sciveres, M
Garfinkel, AF
Gay, C
Gerberich, H
Gerdes, DW
Gerchtein, E
Giagu, S
Giannetti, P
Gibson, A
Gibson, K
Ginsburg, C
Giolo, K
Giordani, M
Giurgui, G
Glagolev, V
Glenzinski, D
Gold, M
Goldschmidt, N
Goldstein, D
Goldstein, J
Gomez, G
Gomez-Ceballos, G
Goncharov, M
Gonzalez, O
Gorelov, I
Goshaw, AT
Gotra, Y
Goulianos, K
Gresele, A
Grosso-Pilcher, C
Guenther, M
de Costa, JG
Haber, C
Hahn, K
Hahn, SR
Halkiadakis, E
Handler, R
Happacher, F
Hara, K
Hare, M
Harr, RF
Harris, RM
Hartmann, F
Hatakeyama, K
Hauser, J
Hays, C
Hayward, H
Heider, E
Heinemann, B
Heinrich, J
Hennecke, M
Herndon, M
Hill, C
Hirschbuehl, D
Hocker, A
Hoffman, KD
Holloway, A
Hou, S
Houlden, MA
Huffman, BT
Huang, Y
Hughes, RE
Huston, J
Ikado, K
Incandela, J
Introzzi, G
Iori, M
Ishizawa, Y
Issever, C
Ivanov, A
Iwata, Y
Iyutin, B
James, E
Jang, D
Jarrell, J
Jeans, D
Jensen, H
Jeon, EJ
Jones, M
Joo, KK
Jun, S
Junk, T
Kamon, T
Kang, J
Unel, MK
Karchin, PE
Kartal, S
Kato, Y
Kemp, Y
Kephart, R
Kerzel, U
Khotilovich, V
Kilminster, B
Kim, DH
Kim, HS
Kim, JE
Kim, MJ
Kim, MS
Kim, SB
Kim, SH
Kim, TH
Kim, YK
King, BT
Kirby, M
Kirsch, L
Klimenko, S
Knuteson, B
Ko, BR
Kobayashi, H
Koehn, P
Kong, DJ
Kondo, K
Konigsberg, J
Kordas, K
Korn, A
Korytov, A
Kotelnikov, K
Kotwal, AV
Kovalev, A
Kraus, J
Kravchenko, I
Kreymer, A
Kroll, J
Kruse, M
Krutelyov, V
Kuhlmann, SE
Kuznetsova, N
Laasanen, AT
Lai, S
Lami, S
Lammel, S
Lancaster, J
Lancaster, M
Lander, R
Lannon, K
Lath, A
Latino, G
Lauhakangas, R
Lazzizzera, I
Le, Y
Lecci, C
LeCompte, T
Lee, J
Lee, J
Lee, SW
Leonardo, N
Leone, S
Lewis, JD
Li, K
Lin, C
Lin, CS
Lindgren, M
Liss, TM
Litvintsev, DO
Liu, T
Liu, Y
Lockyer, NS
Loginov, A
Loreti, M
Loverre, P
Lu, RS
Lucchesi, D
Lukens, P
Lyons, L
Lys, J
Lysak, R
MacQueen, D
Madrak, R
Maeshima, K
Maksimovic, P
Malferrari, L
Manca, G
Marginean, R
Martin, M
Martin, A
Martin, V
Martinez, M
Maruyama, T
Matsunaga, H
Mattson, M
Mazzanti, P
McFarland, KS
McGivern, D
McIntyre, PM
McNamara, P
McNulty, R
Menzemer, S
Menzione, A
Merkel, P
Mesropian, C
Messina, A
Miao, T
Miladinovic, N
Miller, L
Miller, R
Miller, JS
Mills, C
Miquel, R
Miscetti, S
Mitselmakher, G
Miyamoto, A
Miyazaki, Y
Moggi, N
Mohr, B
Moore, R
Morello, M
Moulik, T
Mukherjee, A
Mulhearn, M
Muller, T
Mumford, R
Munar, A
Murat, P
Nachtman, J
Nahn, S
Nakamura, I
Nakano, I
Napier, A
Napora, R
Naumov, D
Necula, V
Niell, F
Nielsen, J
Nelson, C
Nelson, T
Neu, C
Neubauer, MS
Newman-Holmes, C
Nicollerat, AS
Nignamov, T
Nodulman, L
Oesterberg, K
Ogawa, T
Oh, S
Oh, YD
Ohsugi, T
Okusawa, T
Oldeman, R
Orava, R
Orejudos, W
Pagliarone, C
Palmonari, F
Paoletti, R
Papadimitriou, V
Pashapour, S
Patrick, J
Pauletta, G
Paulini, M
Pauly, T
Paus, C
Pellett, D
Penzo, A
Phillips, TJ
Piacentino, G
Piedra, J
Pitts, KT
Plager, C
Pompos, A
Pondrom, L
Pope, G
Poukhov, O
Prakoshyn, F
Pratt, T
Pronko, A
Proudfoot, J
Ptohos, F
Punzi, G
Rademacker, J
Rakitine, A
Rappoccio, S
Ratnikov, F
Ray, H
Reichold, A
Reisert, B
Rekovic, V
Renton, P
Rescigno, M
Rimondi, F
Rinnert, K
Ristori, L
Robertson, WJ
Robson, A
Rodrigo, T
Rolli, S
Rosenson, L
Roser, R
Rossin, R
Rott, C
Russ, J
Ruiz, A
Ryan, D
Saarikko, H
Safonov, A
St Denis, R
Sakumoto, WK
Salamanna, G
Saltzberg, D
Sanchez, C
Sansoni, A
Santi, L
Sarkar, S
Sato, K
Savard, P
Savoy-Navarro, A
Schemitz, P
Schlabach, P
Schmidt, EE
Schmidt, MP
Schmitt, M
Scodellaro, L
Sfiligoi, I
Shears, T
Scribano, A
Scuri, F
Sedov, A
Seidel, S
Seiya, Y
Semeria, F
Sexton-Kennedy, L
Shapiro, MD
Shepard, PF
Shimojima, M
Shochet, M
Shon, Y
Shreyber, I
Sidoti, A
Siket, M
Sill, A
Sinervo, P
Sisakyan, A
Skiba, A
Slaughter, AJ
Sliwa, K
Smith, JR
Snider, FD
Snihur, R
Somalwar, SV
Spalding, J
Spezziga, M
Spiegel, L
Spinella, F
Spiropulu, M
Squillacioti, P
Stadie, H
Stefanini, A
Stelzer, B
Stelzer-Chilton, O
Strologas, J
Stuart, D
Sukhanov, A
Sumorok, K
Sun, H
Suzuki, T
Taffard, A
Tafirout, R
Takach, SF
Takano, H
Takashima, R
Takeuchi, Y
Takikawa, K
Tanaka, M
Takaka, R
Tanimoto, N
Tapprogge, S
Tecchio, M
Teng, PK
Terashi, K
Tesarek, RJ
Tether, S
Thom, J
Thompson, AS
Thomson, E
Tipton, P
Tiwari, V
Tkaczyk, S
Toback, D
Tollefson, K
Tonelli, D
Tonnesmann, M
Torre, S
Torretta, D
Trischuk, W
Tseng, J
Tsuchiya, R
Tsuno, S
Tsybychev, D
Turini, N
Turner, M
Ukegawa, F
Unverhau, T
Uozumi, S
Usynin, D
Vacavant, L
Vaiciulis, A
Varganov, A
Vataga, E
Vejcik, S
Velev, G
Veramendi, G
Vickey, T
Vidal, R
Vila, I
Vilar, R
Volobouev, I
von der Mey, M
Wagner, RG
Wagner, RL
Wagner, W
Wallny, R
Walter, T
Yamashita, T
Yamamoto, K
Wan, Z
Wang, MJ
Wang, SM
Warburton, A
Ward, B
Waschke, S
Waters, D
Watts, T
Weber, M
Wester, WC
Whitehouse, B
Wicklund, AB
Wicklund, E
Williams, HH
Wilson, P
Winer, BL
Wittich, P
Wolbers, S
Wolter, M
Worcester, M
Worm, S
Wright, T
Wu, X
Wurthwein, F
Wyatt, A
Yagil, A
Yang, UK
Yao, W
Yeh, GP
Yi, K
Yoh, J
Yoon, P
Yorita, K
Yoshida, T
Yu, I
Yu, S
Yu, Z
Yun, JC
Zanello, L
Zanetti, A
Zaw, I
Zetti, F
Zhou, J
Zsenei, A
Zucchelli, S
AF Acosta, D
Affolder, T
Akimoto, T
Albrow, MG
Ambrose, D
Amerio, S
Amidei, D
Anastassov, A
Anikeev, K
Annovi, A
Antos, J
Aoki, M
Apollinari, G
Arisawa, T
Arguin, JF
Artikov, A
Ashmanskas, W
Attal, A
Azfar, F
Azzi-Bacchetta, P
Bacchetta, N
Bachacou, H
Badgett, W
Barbaro-Galtieri, A
Barker, GJ
Barnes, VE
Barnett, BA
Baroiant, S
Barone, M
Bauer, G
Bedeschi, F
Behari, S
Belforte, S
Bellettini, G
Bellinger, J
Benjamin, D
Beretvas, A
Bhatti, A
Binkley, M
Bisello, D
Bishai, M
Blair, RE
Blocker, C
Bloom, K
Blumenfeld, B
Bocci, A
Bodek, A
Bolla, G
Bolshov, A
Booth, PSL
Bortoletto, D
Boudreau, J
Bourov, S
Bromberg, C
Brubaker, E
Budagov, J
Budd, HS
Burkett, K
Busetto, G
Bussey, P
Byrum, KL
Cabrera, S
Calafiura, P
Campanelli, M
Campbell, M
Canepa, A
Casarsa, M
Carlsmith, D
Carron, S
Carosi, R
Castro, A
Catastini, P
Cauz, D
Cerri, A
Cerri, C
Cerrito, L
Chapman, J
Chen, C
Chen, YC
Chertok, M
Chiarelli, G
Chlachidze, G
Chlebana, F
Cho, I
Cho, K
Chokheli, D
Chu, ML
Chuang, S
Chung, JY
Chung, WH
Chung, YS
Ciobano, CI
Ciocci, MA
Clark, AG
Clark, D
Coca, M
Connolly, A
Convery, M
Conway, J
Cordelli, M
Cortiana, G
Cranshaw, J
Cuevas, J
Culbertson, R
Currat, C
Cyr, D
Dagenhart, D
Da Ronco, S
D'Auria, S
de Barbaro, P
De Cecco, S
De Lentdecker, G
Dell'Agnello, S
Dell'Orso, M
Demers, S
Demortier, L
Deninno, M
De Pedis, D
Derwent, PF
Dionisi, C
Dittmann, JR
Doksus, P
Dominguez, A
Donati, S
Donega, M
D'Onofrio, M
Dorigo, T
Drollinger, V
Ebina, K
Eddy, N
Ely, R
Erbacher, R
Erdmann, M
Errede, D
Errede, S
Eusebi, R
Fang, HC
Farrington, S
Fedorko, I
Feild, RG
Feindt, M
Fernandez, JP
Ferretti, C
Field, RD
Fiori, I
Flanagan, G
Flaugher, B
Flores-Castillo, LR
Foland, A
Forrester, S
Foster, GW
Franklin, M
Frisch, H
Fujii, Y
Furic, I
Gajjar, A
Gallas, A
Galyardt, J
Gallinaro, M
Garcia-Sciveres, M
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Gay, C
Gerberich, H
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Giagu, S
Giannetti, P
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Ginsburg, C
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Goldschmidt, N
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Gomez, G
Gomez-Ceballos, G
Goncharov, M
Gonzalez, O
Gorelov, I
Goshaw, AT
Gotra, Y
Goulianos, K
Gresele, A
Grosso-Pilcher, C
Guenther, M
de Costa, JG
Haber, C
Hahn, K
Hahn, SR
Halkiadakis, E
Handler, R
Happacher, F
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Harris, RM
Hartmann, F
Hatakeyama, K
Hauser, J
Hays, C
Hayward, H
Heider, E
Heinemann, B
Heinrich, J
Hennecke, M
Herndon, M
Hill, C
Hirschbuehl, D
Hocker, A
Hoffman, KD
Holloway, A
Hou, S
Houlden, MA
Huffman, BT
Huang, Y
Hughes, RE
Huston, J
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Ishizawa, Y
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Iyutin, B
James, E
Jang, D
Jarrell, J
Jeans, D
Jensen, H
Jeon, EJ
Jones, M
Joo, KK
Jun, S
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Kang, J
Unel, MK
Karchin, PE
Kartal, S
Kato, Y
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Kephart, R
Kerzel, U
Khotilovich, V
Kilminster, B
Kim, DH
Kim, HS
Kim, JE
Kim, MJ
Kim, MS
Kim, SB
Kim, SH
Kim, TH
Kim, YK
King, BT
Kirby, M
Kirsch, L
Klimenko, S
Knuteson, B
Ko, BR
Kobayashi, H
Koehn, P
Kong, DJ
Kondo, K
Konigsberg, J
Kordas, K
Korn, A
Korytov, A
Kotelnikov, K
Kotwal, AV
Kovalev, A
Kraus, J
Kravchenko, I
Kreymer, A
Kroll, J
Kruse, M
Krutelyov, V
Kuhlmann, SE
Kuznetsova, N
Laasanen, AT
Lai, S
Lami, S
Lammel, S
Lancaster, J
Lancaster, M
Lander, R
Lannon, K
Lath, A
Latino, G
Lauhakangas, R
Lazzizzera, I
Le, Y
Lecci, C
LeCompte, T
Lee, J
Lee, J
Lee, SW
Leonardo, N
Leone, S
Lewis, JD
Li, K
Lin, C
Lin, CS
Lindgren, M
Liss, TM
Litvintsev, DO
Liu, T
Liu, Y
Lockyer, NS
Loginov, A
Loreti, M
Loverre, P
Lu, RS
Lucchesi, D
Lukens, P
Lyons, L
Lys, J
Lysak, R
MacQueen, D
Madrak, R
Maeshima, K
Maksimovic, P
Malferrari, L
Manca, G
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Martin, M
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McFarland, KS
McGivern, D
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Menzemer, S
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Mesropian, C
Messina, A
Miao, T
Miladinovic, N
Miller, L
Miller, R
Miller, JS
Mills, C
Miquel, R
Miscetti, S
Mitselmakher, G
Miyamoto, A
Miyazaki, Y
Moggi, N
Mohr, B
Moore, R
Morello, M
Moulik, T
Mukherjee, A
Mulhearn, M
Muller, T
Mumford, R
Munar, A
Murat, P
Nachtman, J
Nahn, S
Nakamura, I
Nakano, I
Napier, A
Napora, R
Naumov, D
Necula, V
Niell, F
Nielsen, J
Nelson, C
Nelson, T
Neu, C
Neubauer, MS
Newman-Holmes, C
Nicollerat, AS
Nignamov, T
Nodulman, L
Oesterberg, K
Ogawa, T
Oh, S
Oh, YD
Ohsugi, T
Okusawa, T
Oldeman, R
Orava, R
Orejudos, W
Pagliarone, C
Palmonari, F
Paoletti, R
Papadimitriou, V
Pashapour, S
Patrick, J
Pauletta, G
Paulini, M
Pauly, T
Paus, C
Pellett, D
Penzo, A
Phillips, TJ
Piacentino, G
Piedra, J
Pitts, KT
Plager, C
Pompos, A
Pondrom, L
Pope, G
Poukhov, O
Prakoshyn, F
Pratt, T
Pronko, A
Proudfoot, J
Ptohos, F
Punzi, G
Rademacker, J
Rakitine, A
Rappoccio, S
Ratnikov, F
Ray, H
Reichold, A
Reisert, B
Rekovic, V
Renton, P
Rescigno, M
Rimondi, F
Rinnert, K
Ristori, L
Robertson, WJ
Robson, A
Rodrigo, T
Rolli, S
Rosenson, L
Roser, R
Rossin, R
Rott, C
Russ, J
Ruiz, A
Ryan, D
Saarikko, H
Safonov, A
St Denis, R
Sakumoto, WK
Salamanna, G
Saltzberg, D
Sanchez, C
Sansoni, A
Santi, L
Sarkar, S
Sato, K
Savard, P
Savoy-Navarro, A
Schemitz, P
Schlabach, P
Schmidt, EE
Schmidt, MP
Schmitt, M
Scodellaro, L
Sfiligoi, I
Shears, T
Scribano, A
Scuri, F
Sedov, A
Seidel, S
Seiya, Y
Semeria, F
Sexton-Kennedy, L
Shapiro, MD
Shepard, PF
Shimojima, M
Shochet, M
Shon, Y
Shreyber, I
Sidoti, A
Siket, M
Sill, A
Sinervo, P
Sisakyan, A
Skiba, A
Slaughter, AJ
Sliwa, K
Smith, JR
Snider, FD
Snihur, R
Somalwar, SV
Spalding, J
Spezziga, M
Spiegel, L
Spinella, F
Spiropulu, M
Squillacioti, P
Stadie, H
Stefanini, A
Stelzer, B
Stelzer-Chilton, O
Strologas, J
Stuart, D
Sukhanov, A
Sumorok, K
Sun, H
Suzuki, T
Taffard, A
Tafirout, R
Takach, SF
Takano, H
Takashima, R
Takeuchi, Y
Takikawa, K
Tanaka, M
Takaka, R
Tanimoto, N
Tapprogge, S
Tecchio, M
Teng, PK
Terashi, K
Tesarek, RJ
Tether, S
Thom, J
Thompson, AS
Thomson, E
Tipton, P
Tiwari, V
Tkaczyk, S
Toback, D
Tollefson, K
Tonelli, D
Tonnesmann, M
Torre, S
Torretta, D
Trischuk, W
Tseng, J
Tsuchiya, R
Tsuno, S
Tsybychev, D
Turini, N
Turner, M
Ukegawa, F
Unverhau, T
Uozumi, S
Usynin, D
Vacavant, L
Vaiciulis, A
Varganov, A
Vataga, E
Vejcik, S
Velev, G
Veramendi, G
Vickey, T
Vidal, R
Vila, I
Vilar, R
Volobouev, I
von der Mey, M
Wagner, RG
Wagner, RL
Wagner, W
Wallny, R
Walter, T
Yamashita, T
Yamamoto, K
Wan, Z
Wang, MJ
Wang, SM
Warburton, A
Ward, B
Waschke, S
Waters, D
Watts, T
Weber, M
Wester, WC
Whitehouse, B
Wicklund, AB
Wicklund, E
Williams, HH
Wilson, P
Winer, BL
Wittich, P
Wolbers, S
Wolter, M
Worcester, M
Worm, S
Wright, T
Wu, X
Wurthwein, F
Wyatt, A
Yagil, A
Yang, UK
Yao, W
Yeh, GP
Yi, K
Yoh, J
Yoon, P
Yorita, K
Yoshida, T
Yu, I
Yu, S
Yu, Z
Yun, JC
Zanello, L
Zanetti, A
Zaw, I
Zetti, F
Zhou, J
Zsenei, A
Zucchelli, S
CA CDF Collaboration
TI Measurement of the t(t)over-bar production cross section in p(p)over-bar
collisions at root s=1.96 TeV using dilepton events
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID TOP-QUARK PRODUCTION; LUMINOSITY MONITOR; COLLIDER DETECTOR; PHYSICS;
SUPERSYMMETRY; FERMILAB
AB We report a measurement of the t (t) over bar production cross section using dilepton events with jets and missing transverse energy in p (p) over bar collisions at a center-of-mass energy of 1.96 TeV. Using a 197+/-12 pb(-1) data sample recorded by the upgraded Collider Detector at Fermilab, we use two complementary techniques to select candidate events. We compare the number of observed events and selected kinematical distributions with the predictions of the standard model and find good agreement. The combined result of the two techniques yields a t (t) over bar production cross section of 7.0(-2.1)(+2.4)(stat)(-1.1)(+1.6)(syst)+/-0.4(lum) pb.
C1 Univ Florida, Gainesville, FL 32611 USA.
Acad Sinica, Inst Phys, Taipei 11529, Taiwan.
Argonne Natl Lab, Argonne, IL 60439 USA.
Univ Bologna, Ist Nazl Fis Nucl, I-40127 Bologna, Italy.
Brandeis Univ, Waltham, MA 02254 USA.
Univ Calif Davis, Davis, CA 95616 USA.
Univ Calif Los Angeles, Los Angeles, CA 90024 USA.
Univ Calif San Diego, La Jolla, CA 92093 USA.
Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA.
Univ Cantabria, Inst Fis Cantabria, CSIC, E-39005 Santander, Spain.
Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
Joint Inst Nucl Res, RU-141980 Dubna, Russia.
Duke Univ, Durham, NC 27708 USA.
Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
Univ Geneva, CH-1211 Geneva 4, Switzerland.
Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland.
Harvard Univ, Cambridge, MA 02138 USA.
Helsinki Inst Phys, Helsinki Grp, FIN-00044 Helsinki, Finland.
Univ Helsinki, Div High Energy Phys, Dept Phys Sci, FIN-00044 Helsinki, Finland.
Hiroshima Univ, Higashihiroshima 724, Japan.
Univ Illinois, Urbana, IL 61801 USA.
Johns Hopkins Univ, Baltimore, MD 21218 USA.
Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany.
High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 305, Japan.
Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea.
Seoul Natl Univ, Seoul 151742, South Korea.
Sungkyunkwan Univ, Suwon 440746, South Korea.
Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
Univ Liverpool, Liverpool L69 7ZE, Merseyside, England.
UCL, London WC1E 6BT, England.
MIT, Cambridge, MA 02139 USA.
McGill Univ, Inst Particle Phys, Montreal, PQ H3A 2T8, Canada.
Univ Toronto, Toronto, ON M5S 1A7, Canada.
Univ Michigan, Ann Arbor, MI 48109 USA.
Michigan State Univ, E Lansing, MI 48824 USA.
Inst Theoret & Expt Phys, Moscow 117259, Russia.
Univ New Mexico, Albuquerque, NM 87131 USA.
Northwestern Univ, Evanston, IL 60208 USA.
Ohio State Univ, Columbus, OH 43210 USA.
Okayama Univ, Okayama 7008530, Japan.
Osaka City Univ, Osaka 588, Japan.
Univ Oxford, Oxford OX1 3RH, England.
Univ Padua, Ist Nazl Fis Nucl, Sez Padova Trento, I-35131 Padua, Italy.
Univ Penn, Philadelphia, PA 19104 USA.
Univ Pisa, Ist Nazl Fis Nucl, I-56100 Pisa, Italy.
Scuola Normale Super Pisa, I-56100 Pisa, Italy.
Univ Pittsburgh, Pittsburgh, PA 15260 USA.
Purdue Univ, W Lafayette, IN 47907 USA.
Univ Rochester, Rochester, NY 14627 USA.
Rockefeller Univ, New York, NY 10021 USA.
Univ Roma La Sapienza, Ist Nazl Fis Nucl, Sez Roma 1, I-00185 Rome, Italy.
Rutgers State Univ, Piscataway, NJ 08855 USA.
Texas Tech Univ, Lubbock, TX 79409 USA.
Univ Trieste, Ist Nazl Fis Nucl, Udine, Italy.
Univ Tsukuba, Tsukuba, Ibaraki 305, Japan.
Tufts Univ, Medford, MA 02155 USA.
Waseda Univ, Tokyo 169, Japan.
Wayne State Univ, Detroit, MI 48201 USA.
Univ Wisconsin, Madison, WI 53706 USA.
Yale Univ, New Haven, CT 06520 USA.
RP Acosta, D (reprint author), Univ Florida, Gainesville, FL 32611 USA.
RI Leonardo, Nuno/M-6940-2016; Warburton, Andreas/N-8028-2013; Kim,
Soo-Bong/B-7061-2014; Lysak, Roman/H-2995-2014; Gallas Torreira, Abraham
Antonio/K-6508-2014; Scodellaro, Luca/K-9091-2014; Connolly,
Amy/J-3958-2013; Lazzizzera, Ignazio/E-9678-2015; Cabrera Urban,
Susana/H-1376-2015; ciocci, maria agnese /I-2153-2015; Prokoshin,
Fedor/E-2795-2012; Introzzi, Gianluca/K-2497-2015; Gorelov,
Igor/J-9010-2015; Lancaster, Mark/C-1693-2008; Ruiz,
Alberto/E-4473-2011; Annovi, Alberto/G-6028-2012; Chiarelli,
Giorgio/E-8953-2012; Robson, Aidan/G-1087-2011; De Cecco,
Sandro/B-1016-2012; Wolter, Marcin/A-7412-2012; St.Denis,
Richard/C-8997-2012; Azzi, Patrizia/H-5404-2012; manca,
giulia/I-9264-2012; Amerio, Silvia/J-4605-2012; Punzi,
Giovanni/J-4947-2012; messina, andrea/C-2753-2013; Ivanov,
Andrew/A-7982-2013
OI Leonardo, Nuno/0000-0002-9746-4594; Warburton,
Andreas/0000-0002-2298-7315; Gallas Torreira, Abraham
Antonio/0000-0002-2745-7954; Scodellaro, Luca/0000-0002-4974-8330;
Lazzizzera, Ignazio/0000-0001-5092-7531; ciocci, maria agnese
/0000-0003-0002-5462; Prokoshin, Fedor/0000-0001-6389-5399; Introzzi,
Gianluca/0000-0002-1314-2580; Gorelov, Igor/0000-0001-5570-0133; Ruiz,
Alberto/0000-0002-3639-0368; Annovi, Alberto/0000-0002-4649-4398;
Chiarelli, Giorgio/0000-0001-9851-4816; Azzi,
Patrizia/0000-0002-3129-828X; Punzi, Giovanni/0000-0002-8346-9052;
Ivanov, Andrew/0000-0002-9270-5643
NR 21
TC 56
Z9 56
U1 1
U2 4
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD OCT 1
PY 2004
VL 93
IS 14
AR 142001
DI 10.1103/PhysRevLett.93.142001
PG 7
WC Physics, Multidisciplinary
SC Physics
GA 858SL
UT WOS:000224211900013
ER
PT J
AU Bauer, ED
Thompson, JD
Sarrao, JL
Morales, LA
Wastin, F
Rebizant, J
Griveau, JC
Javorsky, P
Boulet, P
Colineau, E
Lander, GH
Stewart, GR
AF Bauer, ED
Thompson, JD
Sarrao, JL
Morales, LA
Wastin, F
Rebizant, J
Griveau, JC
Javorsky, P
Boulet, P
Colineau, E
Lander, GH
Stewart, GR
TI Structural tuning of unconventional superconductivity in PuMGa5 (M = Co,
Rh)
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID FERMI-SURFACE; CECOIN5; HEAT; PRESSURE; DEPENDENCE; MAGNETISM; ELECTRON;
METALS
AB The superconducting properties of the recently discovered PuMGa5 (M=Co,Rh) superconductors, including the power law behavior of the specific heat, the evolution of the superconducting transition T-c temperature with pressure, and the linear relation between T-c and ratio of tetragonal lattice parameters c/a, are compared to those of the heavy fermion CeMIn5 (M=Co,Rh,Ir) unconventional superconductors. The striking similarity of the properties between the two families of superconductors suggests a common physics and a common (magnetically mediated) mechanism of superconductivity.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
European Commiss, Joint Res Ctr, Inst Transuranium Elements, D-76125 Karlsruhe, Germany.
Univ Florida, Dept Phys, Gainesville, FL 32611 USA.
RP Bauer, ED (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
RI Bauer, Eric/D-7212-2011; Javorsky, Pavel/C-2132-2015; BOULET,
Pascal/D-6494-2011
OI BOULET, Pascal/0000-0003-0684-4397
NR 35
TC 90
Z9 90
U1 0
U2 18
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD OCT 1
PY 2004
VL 93
IS 14
AR 147005
DI 10.1103/PhysRevLett.93.147005
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 858SL
UT WOS:000224211900064
PM 15524833
ER
PT J
AU Brena, B
Nordlund, D
Odelius, M
Ogasawara, H
Nilsson, A
Pettersson, LGM
AF Brena, B
Nordlund, D
Odelius, M
Ogasawara, H
Nilsson, A
Pettersson, LGM
TI Ultrafast molecular dissociation of water in ice
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID STIMULATED DESORPTION; SURFACE-STRUCTURE; D2O ICE; SPECTROSCOPY;
EXCITATION; RADIATION; EMISSION; DYNAMICS
AB Using x-ray emission and photoemission spectroscopies to measure the occupied valence levels in a thin crystalline ice film, we resolve the ionization-induced dissociation of water in ice on a femtosecond time scale. Isotope substitution confirms proton transfer during the core-hole lifetime in spite of the nonresonant excitation. Through ab initio molecular dynamics on the core-ionized state, the dissociation and spectrum evolution are followed at femtosecond intervals. The theoretical simulations confirm the experimental analysis and allow for a detailed study of the dissociative reaction path.
C1 Univ Stockholm, Dept Phys, S-10691 Stockholm, Sweden.
Stanford Synchrotron Radiat Lab, Menlo Pk, CA 94025 USA.
RP Brena, B (reprint author), Royal Inst Technol, S-10691 Stockholm, Sweden.
RI Nordlund, Dennis/A-8902-2008; Nilsson, Anders/E-1943-2011; Pettersson,
Lars/F-8428-2011; Pettersson, Lars/J-4925-2013; Odelius,
Michael/A-7628-2014; Brena, Barbara/C-5909-2014; Ogasawara,
Hirohito/D-2105-2009
OI Nordlund, Dennis/0000-0001-9524-6908; Nilsson,
Anders/0000-0003-1968-8696; Pettersson, Lars/0000-0003-1133-9934;
Odelius, Michael/0000-0002-7023-2486; Ogasawara,
Hirohito/0000-0001-5338-1079
NR 26
TC 52
Z9 52
U1 0
U2 13
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD OCT 1
PY 2004
VL 93
IS 14
AR 148302
DI 10.1103/PhysRevLett.93.148302
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 858SL
UT WOS:000224211900080
PM 15524849
ER
PT J
AU Brunner, S
Valeo, EJ
AF Brunner, S
Valeo, EJ
TI Trapped-particle instability leading to bursting in stimulated Raman
scattering simulations
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID PHYSICS BASIS; IGNITION; FUSION
AB Nonlinear, kinetic simulations of stimulated Raman scattering (SRS) under laser-fusion conditions present a bursting behavior. Different explanations for this regime have been given in previous studies: saturation of SRS by increased nonlinear Landau damping [K. Estabrook et al., Phys. Fluids B 1, 1282 (1989)], and detuning due to the nonlinear frequency shift of the plasma wave [H. X. Vu et al., Phys. Rev. Lett. 86, 4306 (2001)]. Another mechanism, also assigning a key role to the trapped electrons is proposed here: the breakup of the plasma wave through the trapped-particle instability.
C1 Ecole Polytech Fed Lausanne, Assoc EURATOM Confederat Suisse, Ctr Rech Phys Plasmas, CH-1015 Lausanne, Switzerland.
Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Brunner, S (reprint author), Ecole Polytech Fed Lausanne, Assoc EURATOM Confederat Suisse, Ctr Rech Phys Plasmas, CH-1015 Lausanne, Switzerland.
EM stephan.brunner@epfl.ch
RI Brunner, Stephan/B-6200-2009
OI Brunner, Stephan/0000-0001-7588-7476
NR 11
TC 61
Z9 61
U1 1
U2 5
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD OCT 1
PY 2004
VL 93
IS 14
AR 145003
DI 10.1103/PhysRevLett.93.145003
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 858SL
UT WOS:000224211900035
PM 15524804
ER
PT J
AU Gonzalez, JI
Lee, TH
Barnes, MD
Antoku, Y
Dickson, RM
AF Gonzalez, JI
Lee, TH
Barnes, MD
Antoku, Y
Dickson, RM
TI Quantum mechanical single-gold-nanocluster electroluminescent light
source at room temperature
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID PHOTON SOURCE; FLUORESCENCE; MOLECULE; ATOM; CAVITY; DOTS
AB Electrically contacted gold-nanocluster arrays formed within electromigration-induced break junctions exhibit bright, field-dependent electroluminescence in the near infrared (650-800 nm). Intensity autocorrelation of spatially isolated individual nanocluster emission driven at high electrical frequency (f(ac)=similar to200 MHz) reveals antibunched electroluminescence at room temperature. These results demonstrate the single quantum nature of several-atom gold molecules and suggest their use as room-temperature electrically driven single-photon sources.
C1 Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA.
Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN USA.
Georgia Inst Technol, Ctr Adv Res Opt Microscopy, Atlanta, GA 30332 USA.
RP Dickson, RM (reprint author), Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA.
EM dickson@chemistry.gatech.edu
RI Lee, Tae-Hee/A-1266-2010
NR 28
TC 48
Z9 48
U1 2
U2 29
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD OCT 1
PY 2004
VL 93
IS 14
AR 147402
DI 10.1103/PhysRevLett.93.147402
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 858SL
UT WOS:000224211900071
PM 15524840
ER
PT J
AU Hastings, MB
AF Hastings, MB
TI Locality in quantum and Markov dynamics on lattices and networks
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
AB We consider gapped systems governed by either quantum or Markov dynamics, with the low-lying states below the gap being approximately degenerate. For a broad class of dynamics, we prove that ground or stationary state correlation functions can be written as a piece decaying exponentially in space plus a term set by matrix elements between the low-lying states. The key to the proof is a local approximation to the negative energy, or annihilation, part of an operator in a gapped system. Applications to numerical simulation of quantum systems and to networks are discussed.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Los Alamos Natl Lab, T-13, Los Alamos, NM 87545 USA.
EM hastings@cnls.lanl.gov
NR 16
TC 66
Z9 67
U1 1
U2 2
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD OCT 1
PY 2004
VL 93
IS 14
AR 140402
DI 10.1103/PhysRevLett.93.140402
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 858SL
UT WOS:000224211900002
PM 15524771
ER
PT J
AU Lopez, N
Lodziana, Z
Illas, F
Salmeron, M
AF Lopez, N
Lodziana, Z
Illas, F
Salmeron, M
TI When Langmuir is too simple: H-2 dissociation on Pd(111) at high
coverage
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID TOTAL-ENERGY CALCULATIONS; AUGMENTED-WAVE METHOD; HYDROGEN ADSORPTION;
SURFACES; PALLADIUM; METALS; DYNAMICS; EXCHANGE; STICKING; SOLIDS
AB Recent experiments of H-2 adsorption on Pd(111) [T. Mitsui et al., Nature (London) 422, 705 (2003)] have questioned the classical Langmuir picture of second order adsorption kinetics at high surface coverage requiring pairs of empty sites for the dissociative chemisorption. Experiments find that at least three empty sites are needed. Through density functional theory, we find that H-2 dissociation is favored on ensembles of sites that involve a Pd atom with no direct interaction with adsorbed hydrogen. Such active sites are formed by aggregation of at least 3 H-free sites revealing the complex structure of the "active sites."
C1 Univ Barcelona, Dept Quim Fis, E-08028 Barcelona, Spain.
Univ Barcelona, Ctr Especial Recerca Quim Teor, E-08028 Barcelona, Spain.
Ctr Atom Scale Mat Phys, DK-2800 Lyngby, Denmark.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Lopez, N (reprint author), Univ Barcelona, Dept Quim Fis, C Marti & Franques 1, E-08028 Barcelona, Spain.
EM n.lopez@qf.ub.es
RI Illas, Francesc /C-8578-2011; Lopez, Nuria/I-5453-2012
OI Illas, Francesc /0000-0003-2104-6123; Lopez, Nuria/0000-0001-9150-5941
NR 25
TC 56
Z9 56
U1 1
U2 30
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD OCT 1
PY 2004
VL 93
IS 14
AR 146103
DI 10.1103/PhysRevLett.93.146103
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 858SL
UT WOS:000224211900046
PM 15524815
ER
PT J
AU Predebon, I
Marrelli, L
White, RB
Martin, P
AF Predebon, I
Marrelli, L
White, RB
Martin, P
TI Particle-transport analysis in reversed field pinch helical states
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID SINGLE-HELICITY; PLASMAS; RFX
AB This Letter reports the result of a numerical study of particle transport in self-organized single helicity (SH) and quasi-SH reversed field pinch plasmas. Our code, benchmarked against experimental data, predicts a large improvement in particle transport for SH compared to the standard multiple helicity states. The contribution of neoclassical effects is noted. An estimate of the ambipolar electric field in helical states and in fully stochastic magnetic fields is given.
C1 EURATOM, ENEA Fus, Consorzio RFX, Padua, Italy.
Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
Univ Padua, Dipartimento Fis, Padua, Italy.
RP Predebon, I (reprint author), EURATOM, ENEA Fus, Consorzio RFX, Padua, Italy.
RI Marrelli, Lionello/G-4451-2013; White, Roscoe/D-1773-2013
OI Marrelli, Lionello/0000-0001-5370-080X; White,
Roscoe/0000-0002-4239-2685
NR 14
TC 30
Z9 30
U1 2
U2 6
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD OCT 1
PY 2004
VL 93
IS 14
AR 145001
DI 10.1103/PhysRevLett.93.145001
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 858SL
UT WOS:000224211900033
PM 15524802
ER
PT J
AU Sinars, DB
Cuneo, ME
Yu, EP
Bliss, DE
Nash, TJ
Porter, JL
Deeney, C
Mazarakis, MG
Sarkisov, GS
Wenger, DF
AF Sinars, DB
Cuneo, ME
Yu, EP
Bliss, DE
Nash, TJ
Porter, JL
Deeney, C
Mazarakis, MG
Sarkisov, GS
Wenger, DF
TI Mass-profile and instability-growth measurements for 300-wire Z-pinch
implosions driven by 14-18 MA
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID ARRAY Z-PINCHES; X-RAY POWER; PLASMAS
AB We present the first comprehensive study of high wire-number, wire-array Z-pinch dynamics at 14-18 MA using x-ray backlighting and optical shadowgraphy diagnostics. The cylindrical arrays retain slowly expanding, dense wire cores at the initial position up to 60% of the total implosion time. Azimuthally correlated instabilities at the array edge appear during this stage which continue to grow in amplitude and wavelength after the start of bulk motion, resulting in measurable trailing mass that does not arrive on axis before peak x-ray emission.
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Sinars, DB (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM dbsinar@sandia.gov
NR 15
TC 74
Z9 74
U1 0
U2 4
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD OCT 1
PY 2004
VL 93
IS 14
AR 145002
DI 10.1103/PhysRevLett.93.145002
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 858SL
UT WOS:000224211900034
PM 15524803
ER
PT J
AU Voinov, A
Algin, E
Agvaanluvsan, U
Belgya, T
Chankova, R
Guttormsen, M
Mitchell, GE
Rekstad, J
Schiller, A
Siem, S
AF Voinov, A
Algin, E
Agvaanluvsan, U
Belgya, T
Chankova, R
Guttormsen, M
Mitchell, GE
Rekstad, J
Schiller, A
Siem, S
TI Large enhancement of radiative strength for soft transitions in the
quasicontinuum
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID LEVEL DENSITY; CASCADES; SPECTRA; NUCLEI
AB Radiative strength functions (RSFs) for the Fe-56,Fe-57 nuclei below the separation energy are obtained from the Fe-57(He-3,alphagamma)Fe-56 and Fe-57(He-3,He-3'gamma)Fe-57 reactions, respectively. An enhancement of more than a factor of 10 over common theoretical models of the soft (E(gamma)less than or similar to2 MeV) RSF for transitions in the quasicontinuum (several MeV above the yrast line) is observed. Two-step cascade intensities with soft primary transitions from the Fe-56(n,2gamma)Fe-57 reaction confirm the enhancement.
C1 Joint Inst Nucl Res, Frank Lab Neutron Phys, Dubna 141980, Moscow Region, Russia.
Ohio Univ, Dept Phys & Astron, Athens, OH 45701 USA.
Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
N Carolina State Univ, Raleigh, NC 27695 USA.
Triangle Univ Nucl Lab, Durham, NC 27708 USA.
Osmangazi Univ, Dept Phys, TR-26480 Meselik, Eskisehir, Turkey.
Hungarian Acad Sci, Inst Isotope & Surface Chem, Chem Res Ctr, H-1525 Budapest, Hungary.
Univ Oslo, Dept Phys, N-0316 Oslo, Norway.
RP Voinov, A (reprint author), Joint Inst Nucl Res, Frank Lab Neutron Phys, Dubna 141980, Moscow Region, Russia.
EM voinov@ohiou.edu; schiller@nscl.msu.edu
NR 24
TC 61
Z9 62
U1 0
U2 6
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD OCT 1
PY 2004
VL 93
IS 14
AR 142504
DI 10.1103/PhysRevLett.93.142504
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 858SL
UT WOS:000224211900018
PM 15524787
ER
PT J
AU Wang, LB
Mueller, P
Bailey, K
Drake, GWF
Greene, JP
Henderson, D
Holt, RJ
Janssens, RVF
Jiang, CL
Lu, ZT
O'Connor, TP
Pardo, RC
Rehm, KE
Schiffer, JP
Tang, XD
AF Wang, LB
Mueller, P
Bailey, K
Drake, GWF
Greene, JP
Henderson, D
Holt, RJ
Janssens, RVF
Jiang, CL
Lu, ZT
O'Connor, TP
Pardo, RC
Rehm, KE
Schiffer, JP
Tang, XD
TI Laser spectroscopic determination of the He-6 nuclear charge radius
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID HELIUM-ISOTOPES; NEUTRON; SCATTERING; ENERGY; MODEL; SHIFT; HALO
AB We have performed precision laser spectroscopy on individual He-6 (t(1/2)=0.8 s) atoms confined and cooled in a magneto-optical trap, and measured the isotope shift between He-6 and He-4 to be 43 194.772+/-0.056 MHz for the 2(3)S(1)-3(3)P(2) transition. Based on this measurement and atomic theory, the nuclear charge radius of He-6 is determined for the first time in a method independent of nuclear models to be 2.054+/-0.014 fm. The result is compared with the values predicted by a number of nuclear structure calculations and tests their ability to characterize this loosely bound halo nucleus.
C1 Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
Univ Illinois, Dept Phys, Urbana, IL 61801 USA.
Univ Windsor, Dept Phys, Windsor, ON N9B 3P4, Canada.
Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
Univ Chicago, Dept Phys, Chicago, IL 60637 USA.
RP Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
EM lu@anl.gov; rehm@phy.anl.gov
RI Mueller, Peter/E-4408-2011; Holt, Roy/E-5803-2011; Tang, Xiaodong
/F-4891-2016
OI Mueller, Peter/0000-0002-8544-8191;
NR 26
TC 156
Z9 159
U1 2
U2 18
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD OCT 1
PY 2004
VL 93
IS 14
AR 142501
DI 10.1103/PhysRevLett.93.142501
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 858SL
UT WOS:000224211900015
PM 15524784
ER
PT J
AU Hahn, H
AF Hahn, H.
TI Impedance measurements of the Spallation Neutron Source extraction
kicker system
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
AB Transverse coupling impedance measurements of the Spallation Neutron Source (SNS) beam extraction system were performed and the results are here reported. The SNS beam extraction system is composed from 14 subsystems, each of which consists of a vertical kicker magnet plus a pulse forming network (PFN). Impedance bench measurements were performed on one large and one small aperture magnet, stand-alone as well as assembled with the first-article production PFN. The impedance measuring methods to cover the interesting frequency range from below 1 to 100 MHz are described in considerable detail. The upper frequency range is properly covered by the conventional twin-wire method but it had to be supplemented at the low-frequency end by a direct input impedance measurement at the magnet busbar. Required modifications of the PFN to maintain the impedance budget are discussed. The total impedance estimate was finally obtained by quadratic scaling with vertical aperture from the two tested kicker subsystems.
C1 Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Hahn, H (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
FU SNS project; U.S. Department of Energy [DE-AC05-00OR22725]
FX This paper has greatly benefited from the results of previous work
performed together with D. Davino. The measurements presented here were
done with the help of K. Hartmann and D. Warburton. The author would
also like to thank C-I. Pai for mechanical engineering help and the
members of the Collider-Accelerator Pulsed Power Group, J-L. Mi, J.
Sandberg, and W. Zhang for general support. This work was supported by
the SNS project. SNS is managed by UT-Battelle, LLC, under Contract No.
DE-AC05-00OR22725 for the U.S. Department of Energy. SNS is a
partnership of six national laboratories: Argonne, Brookhaven,
Jefferson, Lawrence Berkeley, Los Alamos, and Oak Ridge.
NR 14
TC 5
Z9 5
U1 1
U2 1
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 OCT
PY 2004
VL 7
IS 10
AR 103501
DI 10.1103/PhysRevSTAB.7.103501
PG 17
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA V25ZF
UT WOS:000208515200001
ER
PT J
AU Ohmi, K
Tawada, M
Cai, Y
Kamada, S
Oide, K
Qiang, J
AF Ohmi, K
Tawada, M
Cai, Y
Kamada, S
Oide, K
Qiang, J
TI Luminosity limit due to the beam-beam interactions with or without
crossing angle
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
ID SIMULATION
AB In recent high luminosity colliders, the finite crossing angle scheme becomes popular to gain the luminosity with multibunch or long bunch operation. Success of the KEKB factory showed that the finite crossing angle scheme has no problem achieving beam-beam parameters up to 0.05. We have studied the beam-beam interactions with and without crossing angle toward higher luminosity. We discuss how the crossing angle affects the beam-beam parameter and luminosity in the present KEKB using computer simulations. The simulations showed that crab cavities, which realize the head-on collision effectively, can be expected to double the luminosity.
C1 KEK, Tsukuba, Ibaraki 3050801, Japan.
Stanford Linear Accelerator Ctr, Menlo Pk, CA 94025 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Ohmi, K (reprint author), KEK, 1-1 Oho, Tsukuba, Ibaraki 3050801, Japan.
NR 28
TC 22
Z9 22
U1 0
U2 0
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 OCT
PY 2004
VL 7
IS 10
AR 104401
DI 10.1103/PhysRevSTAB.7.104401
PG 11
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 863UD
UT WOS:000224587800006
ER
PT J
AU Qin, H
Davidson, RC
Barnard, JJ
Lee, EP
AF Qin, H
Davidson, RC
Barnard, JJ
Lee, EP
TI Drift compression and final focus for intense heavy ion beams with
nonperiodic, time-dependent lattice
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
ID FUSION
AB In the currently envisioned configurations for heavy ion fusion, it is necessary to longitudinally compress the beam bunches by a large factor after the acceleration phase. Because the space-charge force increases as the beam is compressed, the beam size in the transverse direction will increase in a periodic quadrupole lattice. If an active control of the beam size is desired, a larger focusing force is needed to confine the beam in the transverse direction, and a nonperiodic quadrupole lattice along the beam path is necessary. In this paper, we describe the design of such a focusing lattice using the transverse envelope equations. A drift compression and final focus lattice should focus the entire beam pulse onto the same focal spot on the target. This is difficult with a fixed lattice, because different slices of the beam may have different perveance and emittance. Four time-dependent magnets are introduced in the upstream of drift compression to focus the entire pulse onto the same focal spot. Drift compression and final focusing schemes are developed for a typical heavy ion fusion driver and for the integrated beam experiment being designed by the Heavy Ion Fusion Virtual National Laboratory.
C1 Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA.
Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Qin, H (reprint author), Princeton Univ, Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
NR 15
TC 17
Z9 17
U1 0
U2 1
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 OCT
PY 2004
VL 7
IS 10
AR 104201
DI 10.1103/PhysRevSTAB.7.104201
PG 7
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 863UD
UT WOS:000224587800005
ER
PT J
AU Sideris, I
Bohn, CL
AF Sideris, IoannisV.
Bohn, Courtlandt L.
TI Production of enhanced beam halos via collective modes and colored noise
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
ID CHARGED-PARTICLE BEAMS; EQUILIBRIUM; DYNAMICS
AB We investigate how collective modes and colored noise conspire to produce a beam halo with much larger amplitude than could be generated by either phenomenon separately. The collective modes are lowest-order radial eigenmodes calculated self-consistently for a configuration corresponding to a direct-current, cylindrically symmetric, warm-fluid Kapchinskij-Vladimirskij equilibrium. The colored noise arises from unavoidable machine errors and influences the internal space-charge force. Its presence quickly launches statistically rare particles to ever-growing amplitudes by continually kicking them back into phase with the collective-mode oscillations. The halo amplitude is essentially the same for purely radial orbits as for orbits that are initially purely azimuthal; orbital angular momentum has no statistically significant impact. Factors that do have an impact include the amplitudes of the collective modes and the strength and autocorrelation time of the colored noise. The underlying dynamics ensues because the noise breaks the Kolmogorov-Arnol'd-Moser tori that otherwise would confine the beam. These tori are fragile; even very weak noise will eventually break them, though the time scale for their disintegration depends on the noise strength. Both collective modes and noise are therefore centrally important to the dynamics of halo formation in real beams.
C1 [Sideris, IoannisV.; Bohn, Courtlandt L.] No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA.
[Bohn, Courtlandt L.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Sideris, I (reprint author), No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA.
FU Department of Education [P116Z010035]; Department of Energy
[DE-FG02-04ER41323]
FX This work was supported by the Department of Education under Grant No.
P116Z010035 and by the Department of Energy under Grant No.
DE-FG02-04ER41323.
NR 22
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 1098-4402
J9 PHYS REV SPEC TOP-AC
JI Phys. Rev. Spec. Top.-Accel. Beams
PD OCT
PY 2004
VL 7
IS 10
AR 104202
DI 10.1103/PhysRevSTAB.7.104202
PG 13
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA V25ZG
UT WOS:000208515300001
ER
PT J
AU Stoltz, PH
Veitzer, S
Cohen, R
Molvik, AW
Vay, JL
AF Stoltz, PH
Veitzer, S
Cohen, R
Molvik, AW
Vay, JL
TI Simulation of heavy ion induced electron yield at grazing incidence
SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS
LA English
DT Article
ID STOPPING-POWER; EMISSION; SOLIDS
AB We compare simulations to experiments measuring electron yield from heavy ions striking metal surfaces, in particular at grazing incidence, for 1.0 MeV potassium and 182.0 MeV gold ions striking stainless steel as measured in two recent experiments. We find the electron yield is proportional to within 3% for the potassium experiments and 13% for the gold experiments to the simulated energy deposited by the ions in a thin (approximate to 20 Angstrom) layer at the target surface. We discuss how nonequilibrium stopping and ion wake fields may account for the larger disagreement with the gold experiments. An analytic estimate based on specular reflection predicts the peak in simulated and measured electron yield as a function of angle to within a few percent.
C1 Tech X Corp, Boulder, CO 80303 USA.
Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Stoltz, PH (reprint author), Tech X Corp, 5621 Arapahoe Rd,Suite A, Boulder, CO 80303 USA.
EM pstoltz@txcorp.com
NR 16
TC 0
Z9 0
U1 0
U2 1
PU AMERICAN 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 OCT
PY 2004
VL 7
IS 10
AR 103201
DI 10.1103/PhysRevSTAB.7.103201
PG 7
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 863UD
UT WOS:000224587800003
ER
PT J
AU Ter-Akopian, GM
Daniel, AV
Fomichev, AS
Popeko, GS
Rodin, AM
Oganessian, YT
Hamilton, JH
Ramayya, AV
Kormicki, J
Hwang, JK
Fong, D
Gore, P
Cole, JD
Jandel, A
Kliman, J
Krupa, L
Rasmussen, JO
Lee, IY
Macchiavelli, AO
Fallon, P
Stoyer, AA
Donangelo, R
Wu, SC
Greiner, W
AF Ter-Akopian, GM
Daniel, AV
Fomichev, AS
Popeko, GS
Rodin, AM
Oganessian, YT
Hamilton, JH
Ramayya, AV
Kormicki, J
Hwang, JK
Fong, D
Gore, P
Cole, JD
Jandel, A
Kliman, J
Krupa, L
Rasmussen, JO
Lee, IY
Macchiavelli, AO
Fallon, P
Stoyer, AA
Donangelo, R
Wu, SC
Greiner, W
TI New data on the ternary fission of Cf-252 from the gammasphere facility
SO PHYSICS OF ATOMIC NUCLEI
LA English
DT Article; Proceedings Paper
CT International Conference on Nuclear Structure and Related Topics
CY SEP 02-06, 2003
CL Dubna, RUSSIA
SP Bogolyubov Lab Theoret Phys, Joint Inst Nucl Res
ID EMISSION
AB Ternary fission of Cf-252 was studied at Gammasphere using eight DeltaE x E particle telescopes. Helium, beryllium, boron, and carbon light charged particles (LCPs) emitted with kinetic energy more than 9, 21, 26, and 32 MeV, respectively, were identified. The 3368-keV gamma transition from the first 2(+) excited state in Be-10 was found and the population probability ratio N(2(+))/N(0(+)) = 0.160 +/- 0.025 was estimated. No evidence was found for 3368-keV gamma rays emitted from a triple molecular state. For the first time, charge distributions are obtained for ternary fission fragments emitted with helium, beryllium, and carbon LCPs. (C) 2004 MAIK "Nauka/Interperiodica".
C1 Joint Inst Nucl Res Dubna, Flerov Lab Nucl React, Moscow, Russia.
Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA.
Idaho Natl Engn & Environm Lab, Idaho Falls, ID USA.
Slovak Acad Sci, Dept Nucl Phys, Bratislava, Slovakia.
Lawrence Berkeley Natl Lab, Berkeley, CA USA.
Lawrence Livermore Natl Lab, Livermore, CA USA.
Univ Fed Rio de Janeiro, Inst Fis, Rio De Janeiro, Brazil.
Natl Tsing Hua Univ, Hsinchu, Taiwan.
Univ Frankfurt, Inst Theoret Phys, D-6000 Frankfurt, Germany.
RP Ter-Akopian, GM (reprint author), Joint Inst Nucl Res Dubna, Flerov Lab Nucl React, Moscow, Russia.
EM Gurgen.TerAkopian@jinr.ru
NR 22
TC 13
Z9 13
U1 0
U2 5
PU MAIK NAUKA/INTERPERIODICA PUBL
PI MELVILLE
PA C/O AMERICAN INST PHYSICS, 2 HUNTINGTON QUANDRANGLE, STE 1NO1, MELVILLE,
NY 11747-4502 USA
SN 1063-7788
J9 PHYS ATOM NUCL+
JI Phys. Atom. Nuclei
PD OCT
PY 2004
VL 67
IS 10
BP 1860
EP 1865
DI 10.1134/1.1811191
PG 6
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 865WQ
UT WOS:000224735300016
ER
PT J
AU Voinov, AV
Schiller, A
Algin, E
Bernstein, LA
Garrett, PE
Guttormsen, M
Nelson, RO
Rekstad, J
Siem, S
AF Voinov, AV
Schiller, A
Algin, E
Bernstein, LA
Garrett, PE
Guttormsen, M
Nelson, RO
Rekstad, J
Siem, S
TI Nature of the pygmy resonance in continuous gamma spectra
SO PHYSICS OF ATOMIC NUCLEI
LA English
DT Article; Proceedings Paper
CT International Conference on Nuclear Structure and Related Topics
CY SEP 02-06, 2003
CL Dubna, RUSSIA
SP Bogolyubov Lab Theoret Phys, Joint Inst Nucl Res
ID STRENGTH FUNCTION; NEUTRON-CAPTURE; LEVEL DENSITY; NUCLEI; YB-172;
SPECTROSCOPY; TRANSITIONS; WIDTHS
AB Two-step-cascade spectra of the Yb-171(n, gammagamma)Yb-172 reaction have been measured using thermal neutrons. They are compared to calculations based on experimental values of the level density and radiative strength function obtained from the Yb-173(He-3, alphagamma)Yb-172 reaction. The multipolarity of a 6.5(15) mu(N)(2) resonance at 3.3(1) MeV in the strength function is determined to be M1 by this comparison. (C) 2004 MAIK "Nauka/Interperiodica".
C1 Joint Inst Nucl Res, Frank Lab Neutron Phys, Moscow 141980, Russia.
Lawrence Livermore Natl Lab, Livermore, CA USA.
N Carolina State Univ, Raleigh, NC 27695 USA.
Osmangazi Univ, Dept Phys, Meselik, Turkey.
Univ Oslo, Dept Phys, Oslo, Norway.
Los Alamos Natl Lab, Los Alamos, NM USA.
RP Voinov, AV (reprint author), Joint Inst Nucl Res, Frank Lab Neutron Phys, Moscow 141980, Russia.
EM voinov@nf.jinr.ru
NR 31
TC 1
Z9 1
U1 2
U2 3
PU MAIK NAUKA/INTERPERIODICA PUBL
PI MELVILLE
PA C/O AMERICAN INST PHYSICS, 2 HUNTINGTON QUANDRANGLE, STE 1NO1, MELVILLE,
NY 11747-4502 USA
SN 1063-7788
J9 PHYS ATOM NUCL+
JI Phys. Atom. Nuclei
PD OCT
PY 2004
VL 67
IS 10
BP 1866
EP 1872
DI 10.1134/1.1811192
PG 7
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 865WQ
UT WOS:000224735300017
ER
PT J
AU Burkert, V
Boluchevskii, AA
Mokeev, VI
Ripani, M
Anghinolfi, M
Battaglieri, B
Golovach, EN
De Vita, R
Elouadrhiri, L
Ishkhanov, BS
Osipenko, MV
Ricco, G
Taiuti, M
Fedotov, GV
Isupov, EL
Markov, NS
Shvedunov, NV
AF Burkert, V
Boluchevskii, AA
Mokeev, VI
Ripani, M
Anghinolfi, M
Battaglieri, B
Golovach, EN
De Vita, R
Elouadrhiri, L
Ishkhanov, BS
Osipenko, MV
Ricco, G
Taiuti, M
Fedotov, GV
Isupov, EL
Markov, NS
Shvedunov, NV
TI New possibilities for studying nucleon resonances in the production of
pi+pi(-) pairs by polarized electrons on an unpolarized proton
SO PHYSICS OF ATOMIC NUCLEI
LA English
DT Article
ID ENERGY REGION; PHOTONS
AB The difference of the cross sections for double charged-pion production in the scattering of opposite-helicity electrons on an unpolarized proton is evaluated within the phenomenological model developed previously. The electromagnetic nucleon-resonance form factors and the parameters of nonresonance processes were taken from a fit to the latest data of the CLAS Collaboration on double charged-pion electroproduction. The effect of the longitudinal excitations of the P-11 (1440) and D-13 (1520) states on the difference of the helicity components of the cross section is studied. The sensitivity of this observable to the nucleon-resonance contribution opens the possibility of employing it both in extracting the Coulomb form factors and in seeking new baryon states. Signals from one of these states were possibly observed in the latest data of the CLAS Collaboration. (C) 2004 MAIK "Nauka/Interperiodica".
C1 Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
Moscow MV Lomonosov State Univ, Inst Nucl Phys, Moscow 119899, Russia.
Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy.
Moscow MV Lomonosov State Univ, Dept Phys, Moscow 119899, Russia.
Univ Genoa, I-16146 Genoa, Italy.
RP Burkert, V (reprint author), Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
RI Isupov, Evgeny/J-2976-2012; Ishkhanov, Boris/E-1431-2012; Osipenko,
Mikhail/N-8292-2015
OI Osipenko, Mikhail/0000-0001-9618-3013
NR 11
TC 0
Z9 0
U1 0
U2 0
PU MAIK NAUKA/INTERPERIODICA PUBL
PI MELVILLE
PA C/O AMERICAN INST PHYSICS, 2 HUNTINGTON QUANDRANGLE, STE 1NO1, MELVILLE,
NY 11747-4502 USA
SN 1063-7788
J9 PHYS ATOM NUCL+
JI Phys. Atom. Nuclei
PD OCT
PY 2004
VL 67
IS 10
BP 1918
EP 1922
DI 10.1134/1.1811198
PG 5
WC Physics, Nuclear; Physics, Particles & Fields
SC Physics
GA 865WQ
UT WOS:000224735300023
ER
PT J
AU Sarkisov, GS
Struve, KW
McDaniel, DH
AF Sarkisov, GS
Struve, KW
McDaniel, DH
TI Effect of current rate on energy deposition into exploding metal wires
in vacuum
SO PHYSICS OF PLASMAS
LA English
DT Article
ID ARRAY Z-PINCHES; PLASMA FORMATION; EXPLOSION
AB This paper presents direct experimental proof of a significant increase of energy deposition into a metal core before voltage breakdown with the current rate for nanosecond exploding wires in a vacuum. This effect is demonstrated for nine different refractory and nonrefractory metals. The strongest influence of current rate was demonstrated for tungsten wires. Increasing the current rate from 20 to 150 A/ns changes the wire core from a solid to a cluster-like state. For nonrefractory metals such as Ag, Al, Cu, and Au, fast explosion allows deposition inside a metal core 1.5-2.9 times the atomization enthalpy before voltage breakdown. The slow explosion, with 20 A/ns, gives 2-3 times less energy deposition before voltage breakdown than the fast-explosion mode. The current-rate effect is important for optimization of wire ablation, reduction of the mass left behind in the wire-array load, and final x-ray yield in modern multi-MA wire-array Z-pinch facilities. (C) 2004 American Institute of Physics.
C1 Ktech Corp Inc, Albuquerque, NM 87123 USA.
Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Sarkisov, GS (reprint author), Ktech Corp Inc, 1300 Eubank, Albuquerque, NM 87123 USA.
NR 15
TC 51
Z9 55
U1 2
U2 12
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 OCT
PY 2004
VL 11
IS 10
BP 4573
EP 4581
DI 10.1063/1.1784452
PG 9
WC Physics, Fluids & Plasmas
SC Physics
GA 861ZI
UT WOS:000224456900009
ER
PT J
AU Strobel, GL
Haan, SW
Munro, DH
Dittrich, TR
Marinak, MM
Suter, LJ
Lindl, JD
Herrmann, MC
AF Strobel, GL
Haan, SW
Munro, DH
Dittrich, TR
Marinak, MM
Suter, LJ
Lindl, JD
Herrmann, MC
TI Yield and hydrodynamic instability versus absorbed energy for a
uniformly doped beryllium 250 eV ignition capsule
SO PHYSICS OF PLASMAS
LA English
DT Article
ID RAYLEIGH-TAYLOR INSTABILITY; PUSHER-FUEL MIX; INDIRECTLY DRIVEN;
FACILITY; DESIGN; IMPLOSIONS; TARGETS; DIAGNOSIS
AB A copper doped beryllium ablator capsule design is geometrically scaled from 190 kJ to 600 kJ absorbed energy for use as an ignition capsule driven at 250 eV on the National Ignition Facility [J. A. Paisner, J. D. Boyes, S. A. Kumpan, W. H. Lowdermilk, and M. S. Sorem, Laser Focus World 30, 75 (1994)]. The capsule design was previously optimized for 190 kJ fixed capsule absorbed energy. The optimization is confirmed at 377 kJ. Two-dimensional simulations are reported that determine surface roughness requirements and tolerance to radiative drive asymmetry over this absorbed energy range. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Strobel, GL (reprint author), Univ Georgia, Dept Phys, Athens, GA 30602 USA.
EM gstrobel@hal.physast.uga.edu
NR 28
TC 7
Z9 8
U1 3
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 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD OCT
PY 2004
VL 11
IS 10
BP 4695
EP 4700
DI 10.1063/1.1792615
PG 6
WC Physics, Fluids & Plasmas
SC Physics
GA 861ZI
UT WOS:000224456900023
ER
PT J
AU Taylor, G
Efthimion, PC
Kessel, CE
Harvey, RW
Smirnov, AP
Ershov, NM
Carter, MD
Forest, CB
AF Taylor, G
Efthimion, PC
Kessel, CE
Harvey, RW
Smirnov, AP
Ershov, NM
Carter, MD
Forest, CB
TI Efficient generation of noninductive, off-axis, Ohkawa current, driven
by electron Bernstein waves in high beta, spherical torus plasmas
SO PHYSICS OF PLASMAS
LA English
DT Article
ID CYCLOTRON CURRENT DRIVE; DIII-D; BOOTSTRAP CURRENT; TRANSPORT; TOKAMAK;
MODEL
AB Off-axis rf-driven current can play a critical role in sustaining high beta, spherical torus (ST) plasmas without a central solenoid. Numerical modeling of electron Bernstein wave current drive (EBWCD) for a betasimilar to40% ST plasma predicts efficient, off-axis, Ohkawa EBWCD. Current can be efficiently driven at r/a>0.5 where the large trapped electron fraction precludes conventional Fisch-Boozer current drive and provides favorable conditions for Ohkawa EBWCD. Calculated normalized current drive efficiency increases with r/a and is a factor of 2 higher at r/a=0.7 than has been obtained with electron cyclotron current drive near the axis of large aspect ratio tokamaks. (C) 2004 American Institute of Physics.
C1 Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
CompX, Del Mar, CA 92014 USA.
Moscow MV Lomonosov State Univ, Moscow, Russia.
Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
Univ Wisconsin, Dept Phys, Madison, WI 53706 USA.
RP Taylor, G (reprint author), Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
RI Ershov, Nikolay/E-4162-2013; Smirnov, Alexander /A-4886-2014
NR 31
TC 34
Z9 34
U1 1
U2 11
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 OCT
PY 2004
VL 11
IS 10
BP 4733
EP 4739
DI 10.1063/1.1792635
PG 7
WC Physics, Fluids & Plasmas
SC Physics
GA 861ZI
UT WOS:000224456900029
ER
PT J
AU Ryutov, DD
Cohen, RH
Pearlstein, LD
AF Ryutov, DD
Cohen, RH
Pearlstein, LD
TI Stability of a finite-length screw pinch revisited
SO PHYSICS OF PLASMAS
LA English
DT Article
ID FREE CYLINDRICAL EQUILIBRIA; SOLAR CORONAL LOOPS; KINK INSTABILITY;
IDEAL MAGNETOHYDRODYNAMICS; HYDROMAGNETIC STABILITY; PLASMA
AB The ideal magnetohydrodynamic stability of a cylindrical screw pinch (i.e., a current-carrying plasma column embedded into an external axial magnetic field) has been considered in the past in great detail. However, the majority of these studies pertain, in fact, to an infinitely long pinch, where the axial eigenmodes can be represented as exp(ikz). The finite length is then accounted for by assigning a specific value to k, k=2pi/L, with L being the distance between the electrodes; in this way, one recovers the familiar Kruskal-Shafranov (KS) stability condition. In the present paper it is emphasized that the solution of the exp(ikz) type cannot satisfy the boundary conditions at the conducting end plates. Previous papers on this subject are reviewed. An effective technique that allows one to analytically obtain stability criteria in the long-thin approximation is developed. Even in this ("long-thin") case substantial deviations from the KS condition are found. In the general case, a convenient representation is obtained for the Green's functions that express perturbations both inside and outside the plasma in terms of the radial displacement of the plasma boundary. These expressions are then used in combination with the energy principle to evaluate corrections to the long-thin approximation. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Ryutov, DD (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
NR 25
TC 27
Z9 27
U1 1
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 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD OCT
PY 2004
VL 11
IS 10
BP 4740
EP 4752
DI 10.1063/1.1781624
PG 13
WC Physics, Fluids & Plasmas
SC Physics
GA 861ZI
UT WOS:000224456900030
ER
PT J
AU Nishimura, K
Liang, E
AF Nishimura, K
Liang, E
TI Parameter study of the diamagnetic relativistic pulse accelerator in
slab geometry. I. Dependence on initial frequency ratio and slab width
SO PHYSICS OF PLASMAS
LA English
DT Article
ID GAUSS LAW; INSTABILITY; CODES
AB Two-and-a-half-dimensional particle-in-cell plasma simulations are used to study the particle energization in expanding magnetized electron-positron plasmas with slab geometry. When the magnetized relativistic plasma with high temperature (electron and positron temperature are k(B)T(e)=k(B)T(p)=5 MeV) is expanding into a vacuum, the electromagnetic (EM) pulse with large amplitude is formed and the surface plasma particles are efficiently accelerated in the forward direction owing to the energy conversion from the EM field to the plasma particles. The behavior of the diamagnetic relativistic pulse accelerator depends strongly on the ratio of the electron plasma frequency to the cyclotron frequency omega(pe)/Omega(e) and the initial plasma thickness. In the high omega(pe)/Omega(e) case, the EM pulse is rapidly damped and the plasma diffuses uniformly without forming density peaks because the initial thermal energy of the plasma is much larger than the field energy. On the contrary, in the low omega(pe)/Omega(e) case, the field energy becomes large enough to energize all the plasma particles, which are confined in the EM pulse and efficiently accelerated to ultrarelativistic energies. It is also found that a thicker initial plasma increases the maximum energy of the accelerated particles. (C) 2004 American Institute of Physics.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Rice Univ, Houston, TX 77005 USA.
RP Nishimura, K (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
NR 13
TC 6
Z9 6
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 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD OCT
PY 2004
VL 11
IS 10
BP 4753
EP 4760
DI 10.1063/1.1791211
PG 8
WC Physics, Fluids & Plasmas
SC Physics
GA 861ZI
UT WOS:000224456900031
ER
PT J
AU Cheng, CZ
Gorelenkov, NN
AF Cheng, CZ
Gorelenkov, NN
TI Trapped electron stabilization of ballooning modes in low aspect ratio
toroidal plasmas
SO PHYSICS OF PLASMAS
LA English
DT Article
ID ALFVEN EIGENMODES; STABILITY; TOKAMAKS; FREQUENCY; PRESSURE; EQUATION;
REGIME; SHEAR; EDGE
AB The kinetic effects of trapped electron dynamics and finite gyroradii and magnetic drift motion of ions are shown to give rise to a large parallel electric field and hence a parallel current that greatly enhances the stabilizing effect of field line tension for ballooning modes in low aspect ratio toroidal plasmas. For large aspect ratio the stabilizing effect increases (reduces) the beta(=2P/B-2) threshold for the first (second) stability of the kinetic ballooning mode (KBM) from the magnetohydrodynamics (MHD) beta threshold value by a factor proportional to the trapped electron density fraction. For small aspect ratio the stabilizing effect can greatly increase the beta threshold of the first stability of KBMs from the MHD beta threshold by S(c)similar or equal to1+(n(e)/n(eu))delta, where n(e)/n(eu) is the ratio of the total electron density to the untrapped electron density, and delta depends on the trapped electron dynamics and finite gyroradii and magnetic drift motion of ions. If n(e)/n(eu)much greater than1 as in the National Spherical Torus Experiment (NSTX) [M. Ono, Nucl. Fusion 40, 557 (2000)] with an aspect ratio of similar or equal to1.4, the KBM should be stable for betaless than or equal to1 for finite magnetic shear. Therefore, unstable KBMs are expected only in the weak shear region near the radial location of the minimum of the safety factor in NSTX reverse shear discharges. (C) 2004 American Institute of Physics.
C1 Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Cheng, CZ (reprint author), Princeton Univ, Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
RI Cheng, Chio/K-1005-2014
NR 24
TC 8
Z9 8
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 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD OCT
PY 2004
VL 11
IS 10
BP 4784
EP 4795
DI 10.1063/1.1783313
PG 12
WC Physics, Fluids & Plasmas
SC Physics
GA 861ZI
UT WOS:000224456900035
ER
PT J
AU Nash, TJ
Deeney, C
Chandler, GA
Sinars, DB
Cuneo, ME
Waisman, EM
Stygar, WA
Wenger, D
Speas, S
Leeper, RJ
Seaman, JF
McGurn, J
Torres, J
Jobe, D
Gilliland, T
Nielsen, D
Hawn, R
Seaman, H
Keller, K
Moore, T
Wagoner, TC
LePell, PD
Lucas, J
Schroen, D
Russell, C
Kernaghan, M
AF Nash, TJ
Deeney, C
Chandler, GA
Sinars, DB
Cuneo, ME
Waisman, EM
Stygar, WA
Wenger, D
Speas, S
Leeper, RJ
Seaman, JF
McGurn, J
Torres, J
Jobe, D
Gilliland, T
Nielsen, D
Hawn, R
Seaman, H
Keller, K
Moore, T
Wagoner, TC
LePell, PD
Lucas, J
Schroen, D
Russell, C
Kernaghan, M
TI Comparison of a copper foil to a copper wire-array Z pinch at 18 MA
SO PHYSICS OF PLASMAS
LA English
DT Article
ID RAYLEIGH-TAYLOR INSTABILITY; IMPLOSIONS; DYNAMICS; POWER
AB Results from the first solid foil implosion on the 18-MA Z accelerator are reported. The foil implosion is compared to a 300-wire-array implosion with the same material and the same diameter, height, and total mass. Though both the foil and the array produced comparable x-ray yields, the array's radiation burst was twice as powerful and half as long as the foil's. These data along with x-ray backlighting images and inductance measurements suggest that the foil implosion was more unstable than the wire-array implosion. (C) 2004 American Institute of Physics.
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Nash, TJ (reprint author), Sandia Natl Labs, MS-1196,Dept 1677-1515 Eubane,SE POB 5800, Albuquerque, NM 87185 USA.
NR 22
TC 14
Z9 14
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 1070-664X
J9 PHYS PLASMAS
JI Phys. Plasmas
PD OCT
PY 2004
VL 11
IS 10
BP L65
EP L68
DI 10.1063/1.1796352
PG 4
WC Physics, Fluids & Plasmas
SC Physics
GA 861ZI
UT WOS:000224456900003
ER
PT J
AU Gor'kov, LP
Kresin, VZ
AF Gor'kov, LP
Kresin, VZ
TI Mixed-valence manganites: fundamentals and main properties
SO PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS
LA English
DT Review
DE manganites; percolation; doping phases
ID METAL-INSULATOR-TRANSITION; DOUBLE-EXCHANGE FERROMAGNET; LOCAL
LATTICE-DISTORTIONS; PHASE-SEPARATION; COLOSSAL MAGNETORESISTANCE; DOPED
MANGANITES; MAGNETIC-FIELD; GIANT MAGNETORESISTANCE; NEUTRON-SCATTERING;
LOW-TEMPERATURES
AB The study of manganites has been undergoing intensive development, especially following the discovery of colossal magnetoresistance (CMR). The most fundamental property of these materials is a strong correlation between their transport and magnetic properties. A transition to the ferromagnetic (and metallic) state occurs at a finite doping level and represents a special type of transition which should be described in terms of percolation theory. The same applies for the transition at the Curie temperature. As a result of the percolation theory approach, the view of these materials, both above and below the transition point, is that of inhomogeneous media consisting of tiny islands of interweaving sub-phases. These basic ideas have been now verified experimentally by neutron data, X-ray analysis, Mossbauer spectroscopy, heat capacity and magnetization measurements, etc. The phase diagram as a function of doping displays a peculiar electron-hole asymmetry; this asymmetry as well as other features (e.g., the optical properties) can be explained in the framework of a generalized two-band picture. We trace how the ground state evolves with doping and give a self-consistent analysis of various thermodynamic, optical and transport properties of metallic manganites, isotope effect, etc. It is predicted that giant oscillations in the Josephson current of a S-AFM-S junction will occur as a function of weak external magnetic fields. The contact phenomena are also described. (C) 2004 Elsevier B.V. All rights reserved.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Natl High Magnet Field Lab, Tallahassee, FL 32310 USA.
Russian Acad Sci, LD Landau Theoret Phys Inst, Moscow 117334, Russia.
RP Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
EM vzkresin@lbl.gov
NR 141
TC 97
Z9 100
U1 6
U2 28
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0370-1573
EI 1873-6270
J9 PHYS REP
JI Phys. Rep.-Rev. Sec. Phys. Lett.
PD OCT
PY 2004
VL 400
IS 3
BP 149
EP 208
DI 10.1016/j.physrep.2004.08.003
PG 60
WC Physics, Multidisciplinary
SC Physics
GA 865TK
UT WOS:000224725600001
ER
PT J
AU Tranquada, J
Strongin, M
Johnson, P
Kivelson, S
AF Tranquada, J
Strongin, M
Johnson, P
Kivelson, S
TI Victor John Emery
SO PHYSICS TODAY
LA English
DT Biographical-Item
C1 Brookhaven Natl Lab, Upton, NY 11973 USA.
Univ Calif Los Angeles, Los Angeles, CA 90024 USA.
RP Tranquada, J (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
NR 0
TC 0
Z9 0
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 0031-9228
J9 PHYS TODAY
JI Phys. Today
PD OCT
PY 2004
VL 57
IS 10
BP 92
EP 93
DI 10.1063/1.1825280
PG 2
WC Physics, Multidisciplinary
SC Physics
GA 858GZ
UT WOS:000224181600023
ER
PT J
AU Kim, J
Choe, W
Ono, M
AF Kim, J
Choe, W
Ono, M
TI Time-dependent optimization of initiation phase of the outer PF
coil-only inductive start-up of NSTX plasmas
SO PLASMA PHYSICS AND CONTROLLED FUSION
LA English
DT Article
ID SPHERICAL TOKAMAK; ITER
AB Dynamic modelling of the inductive plasma start-up utilizing only the outer poloidal field (PF) coils without using an in-board Ohmic solenoid was performed for the National Spherical Torus eXperiment (NSTX) based on the static calculation result. A time-dependent calculation using the two-dimensional axisymmetric dynamic code and the plasma evolution code enabled us to find the appropriate waveform of the NSTX PF coils that satisfied various start-up conditions, such as the formation and sustainment of field null, a significant amount of magnetic flux for further plasma current ramp-up, sufficient size of the E-t (.) B-t/B-perpendicular to = 0.1 kV m(-1) contour for successful breakdown, force balance condition, etc. Among many sets of solutions possibly satisfying the aforementioned conditions, the result introduced in this report also meets the requirement imposed by the power supply system. With the obtained current waveform of the PF coils, it is shown that the hexapole quality field null can be sustained for at least 6 ms with a reasonably large size. The available induction flux at the expected starting time of the breakdown period is as large as 0.15 Wb, with which the plasma current can ramp up to a few hundred kiloamperes, based on experience from the conventional in-board Ohmic solenoid start-up on NSTX. The size of the E-t (.) B-t/B-perpendicular to = 0.1 kV m(-1) contour, in which successful breakdown occurred in the presence of strong pre-ionization on DIII-D, is as large as more than 30 cm, and sustains for several milliseconds. An analysis for the force balance and the field index shows that the plasma produced can be stable for radial as well as vertical perturbations during the initial start-up phase.
C1 Korea Adv Inst Sci & Technol, Dept Phys, Taejon 305701, South Korea.
Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Kim, J (reprint author), Korea Adv Inst Sci & Technol, Dept Phys, 373-1 Guseong Dong, Taejon 305701, South Korea.
EM wchoe@kaist.ac.kr
RI Choe, Wonho/C-1556-2011
NR 23
TC 6
Z9 6
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0741-3335
J9 PLASMA PHYS CONTR F
JI Plasma Phys. Control. Fusion
PD OCT
PY 2004
VL 46
IS 10
BP 1647
EP 1657
AR PII S0741-3335(04)82364-9
DI 10.1088/0741-3335/46/10/008
PG 11
WC Physics, Fluids & Plasmas
SC Physics
GA 866YL
UT WOS:000224809200009
ER
PT J
AU Eisen, MB
Brown, PO
Varmus, HE
AF Eisen, MB
Brown, PO
Varmus, HE
TI PLoS medicine - A medical journal for the Internet age
SO PLOS MEDICINE
LA English
DT Editorial Material
C1 Lawrence Berkeley Lab, Berkeley, CA USA.
Univ Calif Berkeley, Berkeley, CA 94720 USA.
Stanford Univ, Sch Med, Stanford, CA 94305 USA.
Howard Hughes Med Inst, Stanford, CA 94305 USA.
Mem Sloan Kettering Canc Ctr, New York, NY 10021 USA.
RP Eisen, MB (reprint author), Lawrence Berkeley Lab, Berkeley, CA USA.
OI Eisen, Michael/0000-0002-7528-738X
NR 6
TC 17
Z9 17
U1 0
U2 0
PU PUBLIC LIBRARY SCIENCE
PI SAN FRANCISCO
PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA
SN 1549-1277
J9 PLOS MED
JI PLos Med.
PD OCT
PY 2004
VL 1
IS 1
BP 2
EP 3
AR e31
DI 10.1371/journal.pmed.0010031
PG 2
WC Medicine, General & Internal
SC General & Internal Medicine
GA 902LF
UT WOS:000227357900002
ER
PT J
AU Fuller, J
Shadle, L
Mei, J
AF Fuller, J
Shadle, L
Mei, J
TI Coal combustion concerns
SO POWER
LA English
DT Editorial Material
C1 W Virginia Univ, Morgantown, WV 26506 USA.
US DOE, Natl Energy Technol Lab, Washington, DC 20585 USA.
RP Fuller, J (reprint author), W Virginia Univ, Morgantown, WV 26506 USA.
EM jfuller@wvu.edu
NR 0
TC 0
Z9 0
U1 0
U2 0
PU MCGRAW HILL INC
PI NEW YORK
PA 1221 AVENUE OF THE AMERICAS, NEW YORK, NY 10020 USA
SN 0032-5929
J9 POWER
JI Power
PD OCT
PY 2004
VL 148
IS 8
BP 20
EP +
PG 4
WC Energy & Fuels
SC Energy & Fuels
GA 864XA
UT WOS:000224665100018
ER
PT J
AU Nie, JS
Ellingwood, BR
AF Nie, JS
Ellingwood, BR
TI A new directional simulation method for system reliability. Part I:
application of deterministic point sets
SO PROBABILISTIC ENGINEERING MECHANICS
LA English
DT Article
DE computational mechanics; directional simulation; probability;
reliability; statistics; structural engineering
ID PROBABILITY INTEGRATION; STRUCTURAL RELIABILITY
AB To assess structural system reliability accurately, simulation is often the only feasible method because of dimensionality, highly nonlinear limit states, small failure probability and other factors. However, simulations can be computationally inefficient when the reliability assessment involves finite element analysis and the cost of structural analysis is large. Efficient directional simulation, as well as other simulation techniques, often can be improved in terms of accuracy and efficiency if the sample points are identified by deterministic point sets rather than generated randomly. This article introduces and investigates various deterministic point sets theoretically and experimentally in conjunction with directional simulation, and identifies one particular point set (Fekete point set) as being especially useful in this regard. New test measures are proposed to evaluate the quality and uniformity of point sets, which are essential in preserving the underlying probability distribution. A companion paper presents a point set refinement scheme using neural networks, which is a technique parallel to importance sampling. (C) 2004 Elsevier Ltd. All rights reserved.
C1 Georgia Inst Technol, Sch Civil & Environm Engn, Atlanta, GA 30332 USA.
Brookhaven Natl Lab, Dept Energy Sci & Technol, Upton, NY 11973 USA.
RP Ellingwood, BR (reprint author), Georgia Inst Technol, Sch Civil & Environm Engn, Atlanta, GA 30332 USA.
EM bruce.ellingwood@ce.gatech.edu
NR 22
TC 12
Z9 15
U1 1
U2 9
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0266-8920
J9 PROBABILIST ENG MECH
JI Probab. Eng. Eng. Mech.
PD OCT
PY 2004
VL 19
IS 4
BP 425
EP 436
DI 10.1016/j.probengmech.2004.03.004
PG 12
WC Engineering, Mechanical; Mechanics; Statistics & Probability
SC Engineering; Mechanics; Mathematics
GA 862NM
UT WOS:000224497700013
ER
PT J
AU Nie, JS
Ellingwood, BR
AF Nie, JS
Ellingwood, BR
TI A new directional simulation method for system reliability. Part II:
application of neural networks
SO PROBABILISTIC ENGINEERING MECHANICS
LA English
DT Article
DE computational mechanics; directional importance sampling; neural
networks; probability; reliability; statistics
ID RESPONSE-SURFACE METHOD; STRUCTURAL RELIABILITY
AB A challenge in directional importance sampling is in identifying the location and the shape of the importance sampling density function when a realistic limit state for a structural system is considered in a finite element-supported reliability analysis. Deterministic point refinement schemes, previously studied in place of directional importance sampling, can be improved by prior knowledge of the limit state. This paper introduces two types of neural networks that identify the location and shape of the limit state quickly and thus facilitate directional simulation-based reliability assessment using the deterministic Fekete point sets introduced in the companion paper. A set of limit states composed of linear functions are used to test the efficiency and possible directional preference of the networks. These networks are shown in the tests and examples to reduce the simulation effort in finite element-based reliability assessment. (C) 2004 Elsevier Ltd. All rights reserved.
C1 Brookhaven Natl Lab, Dept Energy Sci & Technol, Upton, NY 11973 USA.
Georgia Inst Technol, Sch Civil & Environm Engn, Atlanta, GA 30332 USA.
RP Ellingwood, BR (reprint author), Brookhaven Natl Lab, Dept Energy Sci & Technol, Bldg 130, Upton, NY 11973 USA.
EM bruce.ellingwood@ce.gatech.edu
NR 17
TC 11
Z9 11
U1 2
U2 9
PU ELSEVIER SCI LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
SN 0266-8920
J9 PROBABILIST ENG MECH
JI Probab. Eng. Eng. Mech.
PD OCT
PY 2004
VL 19
IS 4
BP 437
EP 447
DI 10.1016/j.probengmech.2004.03.005
PG 11
WC Engineering, Mechanical; Mechanics; Statistics & Probability
SC Engineering; Mechanics; Mathematics
GA 862NM
UT WOS:000224497700014
ER
PT J
AU Kleiner, R
Koelle, D
Ludwig, F
Clarke, J
AF Kleiner, R
Koelle, D
Ludwig, F
Clarke, J
TI Superconducting quantum interference devices: State of the art and
application's
SO PROCEEDINGS OF THE IEEE
LA English
DT Article
DE flux transformer; gradiometer; Josephson junction; magnetic resonance
imaging (MRI); magnetoencephalography (MEG); magnetometer; nuclear
magnetic resonance (NMR); superconducting; quantum interference device
(SQUID)
ID MICROTESLA MAGNETIC-FIELDS; LARGE THERMAL FLUCTUATIONS; LOW-FREQUENCY
NOISE; DC-SQUID; RADIOFREQUENCY-AMPLIFIER; RF-SQUIDS; MRI SYSTEM; 1/F
NOISE; MAGNETOMETER; YBA2CU3O7-X
AB Superconducting quantum interference devices (SQUIDs) are sensitive detectors of magnetic flux. A SQUID consists of a superconducting loop interrupted by either one or two Josephson junctions for the RF or dc SQUID, respectively. Low transition temperature (T,) SQUIDs are fabricated from thin films of niobium. Immersed in liquid helium at 4.2 K, their flux noise is typically 10(-6) Phi(0) Hz(-1/2), where Phi(0) drop h/2e is the flux quantum. High-T-c SQUIDs are fabricated from thin films of YBa2Cu3O7-x, and are generally operated in liquid nitrogen at 77 K. Inductively coupled to an appropriate input circuit, SQUIDs measure a variety of physical quantities, including magnetic field, magnetic field gradient, voltage, and magnetic susceptibility. Systems are available for,detecting magnetic signals from the brain, measuring the magnetic susceptibility of materials and geophysical core samples, magnetocardiography and nondestructive evaluation. SQUID "microscopes" detect magnetic nanoparticles attached to pathogens in an immunoassay technique and locate faults in semiconductor packages. A SQUID amplifier with an integrated resonant microstrip is within a factor of two of the quantum limit at 0.5 GHz and will be used in a search for axions. High-resolution magnetic resonance images are obtained at frequencies of a few kilohertz with a SQUID-based detector.
C1 Univ Tubingen, Inst Elekt Messtech & Grundlagen Elektrotech, D-72076 Tubingen, Germany.
Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
Lawrence Berkeley Natl Lab, Div Sci Mat, Berkeley, CA 94720 USA.
RP Univ Tubingen, Inst Elekt Messtech & Grundlagen Elektrotech, Morgenstelle 1, D-72076 Tubingen, Germany.
EM kleiner@uni-tuebingen.de; koelle@uni-tuebingen.de; f.ludwig@tu-bs.de;
jclarke@physics.berkeley.edu
RI Koelle, Dieter/E-5111-2011
NR 91
TC 67
Z9 68
U1 2
U2 44
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9219
EI 1558-2256
J9 P IEEE
JI Proc. IEEE
PD OCT
PY 2004
VL 92
IS 10
BP 1534
EP 1548
DI 10.1109/JPROC.2004.833655
PG 15
WC Engineering, Electrical & Electronic
SC Engineering
GA 854PY
UT WOS:000223917000003
ER
PT J
AU Scanlan, RM
Malozemoff, AP
Larbalestier, DC
AF Scanlan, RM
Malozemoff, AP
Larbalestier, DC
TI Superconducting materials for large scale applications
SO PROCEEDINGS OF THE IEEE
LA English
DT Review
DE Bi2Sr2CaCu2Os; (Bi,Pb)(2)SrCa2Cu3O10; BSCCO-2212; BSCCO-2223; coated
conductors; MgB2; Nb3Sn; Nb-Ti; superconducting wires; superconductors;
YBa2Cu3O7-delta; YBa2Cu3O7 (YBCO)
ID CRITICAL-CURRENT-DENSITY; HIGH-TEMPERATURE SUPERCONDUCTORS; UPPER
CRITICAL FIELDS; INCLINED SUBSTRATE DEPOSITION; ARTIFICIAL PINNING
CENTERS; YTTRIA-STABILIZED-ZIRCONIA; BI-2212 INSERT COILS; COATED
CONDUCTORS; CRITICAL CURRENTS; NB-TI
AB Since the 1960s, Nb-Ti (superconducting transition temperature T-c = 9 K) and Nb3Sn (T-c = 18 K) have been the materials of choice for virtually all superconducting magnets. However the prospects for the future changed dramatically in 1987 with the discovery of layered cuprate superconductors with T-c values that now extend up to about 135 K. Fabrication of useful conductors out of the cuprates has been difficult, but a first generation of silver-sheathed composite conductors based on (Bi, Pb)(2)Sr2Ca2Cu3O10 (T-c similar to 110 K) has already been commercialized. Recent progress on a second generation of biaxially aligned coated conductors using the less anisotropic YBa2Cu3O7 structure has been rapid, suggesting that it too might enter service in the near future. The discovery of superconductivity in MgB2 below 39 K in 2001 has brought yet another candidate material to the large-scale applications mix. Two distinct markets for superconductor wires exist-the more. classical low-temperature magnet applications such as particle accelerators, nuclear magnetic resonance and magnetic resonance imaging magnets, and plasma-containment magnets for fusion power and the newer and potentially much larger market for electric power equipment, such as motors, generators, synchronous condensers, power transmission cables, transformers, and fault-current limiters for the electric utility grid. We review key properties and recent progress in these materials and assess their prospects for further development and application.
C1 Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
Amer Supercond Corp, Westborough, MA 01581 USA.
Univ Wisconsin, Ctr Appl Superconduct, Madison, WI 53706 USA.
RP Scanlan, RM (reprint author), 26A Lost Valley Dr, Orinda, CA 94563 USA.
EM rmscanlan@aol.com; amalozemoff@amsuper.com; larbalestier@engr.wisc.edu
RI Larbalestier, David/B-2277-2008
OI Larbalestier, David/0000-0001-7098-7208
NR 104
TC 91
Z9 92
U1 15
U2 122
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
SN 0018-9219
EI 1558-2256
J9 P IEEE
JI Proc. IEEE
PD OCT
PY 2004
VL 92
IS 10
BP 1639
EP 1654
DI 10.1109/JPROC.2004.833673
PG 16
WC Engineering, Electrical & Electronic
SC Engineering
GA 854PY
UT WOS:000223917000010
ER
PT J
AU Gourlay, SA
Sabbi, G
Kircher, F
Martovetsky, N
Ketchen, D
AF Gourlay, SA
Sabbi, G
Kircher, F
Martovetsky, N
Ketchen, D
TI Superconducting magnets and their applications
SO PROCEEDINGS OF THE IEEE
LA English
DT Article
DE applications; detectors; fusion; high-energy physics; maglev;
superconducting magnets; superconductivity
ID NB3SN DIPOLE MAGNET; HIGH-RESOLUTION NMR; SOLENOID MAGNET; CONSTRUCTION;
ACCELERATOR; TOKAMAK; DESIGN; COILS; PROGRESS
AB Since the discovery of superconductivity almost a century ago, there has been a steady increase in the variety of superconducting magnet applications. Progress in superconducting magnet technology has resulted in applications in areas of basic science, medicine, separation, and levitation. Performance improvements in a variety of materials, from low-temperature to high-temperature superconductors, are the foundation of recent rapid development. In addition, large increases in affordable computing power along with steady refinement of three-dimensional analytical tools and improved materials characterization, have allowed many more advanced magnet concepts to be realized directly in hardware without scale prototype testing than was previously possible. This in turn has broadened opportunities for new science and technology results in many fields including the basic sciences, medical imaging, fusion, environmental remediation, and transportation. In this paper a few examples of these applications will be discussed, representing a range in magnetic field, current density, and overall size, from the practical to the developmental.
C1 Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
CEA Saclay, SACM, F-91191 Gif Sur Yvette, France.
Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Gen Atom, San Diego, CA 92186 USA.
RP Gourlay, SA (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
EM sagourlay@lbl.gov; glsabbi@lbl.gov; kircher@dapnia.cea.fr;
martovetsky1@llnl.gov; donald.ketchen@gat.com
NR 53
TC 9
Z9 10
U1 3
U2 9
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 0018-9219
J9 P IEEE
JI Proc. IEEE
PD OCT
PY 2004
VL 92
IS 10
BP 1675
EP 1687
DI 10.1109/JPROC.2004.833675
PG 13
WC Engineering, Electrical & Electronic
SC Engineering
GA 854PY
UT WOS:000223917000012
ER
PT J
AU Hull, JR
Murakami, M
AF Hull, JR
Murakami, M
TI Applications of bulk high-temperature superconductors
SO PROCEEDINGS OF THE IEEE
LA English
DT Article
DE current leads; fault-current limiters (FCLs); fly-wheel energy storage;
high -temperature superconductors; magnetic levitation; magnetic
separation; rare-earth compounds; sputtering; superconducting
composites; superconducting devices; superconducting rotating machines;
trapped-field magnets; yttrium compounds
ID BA-CU-O; 10 KWH FLYWHEEL; MECHANICAL-PROPERTIES; RELUCTANCE MOTORS;
MAGNETIC-FIELDS; HIGH-TC; BEARINGS; HYSTERESIS; SYSTEM; CONSTRUCTION
AB Bulk high-temperature superconductors (HTSs) enable the opportunity to develop several unique applications in electrical power that are not feasible with superconducting or normal wires. The large current carrying capacity and low thermal conductivity of the HTSs allows relatively short lengths to carry large currents to low-temperature devices without introducing heat to the device. Such current leads can dramatically reduce the refrigeration requirements for devices such as SMES. The HTSs make a relatively sharp transition to a highly resistive state when the critical current density is exceeded, and this effect has suggested their use for resistive fault current limiters. The bulk HTSs may also take the form of large single-grained superconductors within which circulating currents may flow at large current density without loss. They are capable of developing magnetizations, similar to that of permanent magnets, but with much larger magnetic fields. In this case, they may be used as field-trapping components. Applications in this case include brushless synchronous motors, laboratory magnets, magnetic separation, and magnetron sputtering. The bulk HTSs may also be used as diamagnetic objects in magnetic circuits to provide new types of power devices. One application that uses this effect is an inductive fault current limiters, in which the HTS shields an iron core in an inductive circuit until some current level is exceeded. This transition increases the component from low impedance to high impedance. The diamagnetic property may also be used to create low-loss magnetic bearings for use in efficient energy-storage flywheel devices or sensitive instrumentation. The combination of diamagnetic shielding and field trapping has suggested their use in motor designs analogous to hysteresis motors. Laboratory prototypes for all of these devices have been constructed and tested, and in some cases the devices have been field tested in actual power systems. Improvements in HTS properties, such as flux pinning, mechanical strength, and the ability to grow large grains, have greatly improved the economics of applications that use bulk HTS.
C1 Argonne Natl Lab, Div Energy Technol, Thermal & Electromech Sect, Argonne, IL 60439 USA.
Shibaura Inst Technol, Supercond Mat Lab, Dept Mat Sci & Engn, Tokyo 1088548, Japan.
Int Supercond Technol Ctr, Supercond Res Lab, Tokyo 1350062, Japan.
RP Hull, JR (reprint author), Argonne Natl Lab, Div Energy Technol, Thermal & Electromech Sect, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM jhull@anl.gov; masatomu@sic.shibaura-it.ac.jp
NR 55
TC 94
Z9 99
U1 3
U2 41
PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
PI PISCATAWAY
PA 445 HOES LANE, PISCATAWAY, NJ 08855 USA
SN 0018-9219
J9 P IEEE
JI Proc. IEEE
PD OCT
PY 2004
VL 92
IS 10
BP 1705
EP 1718
DI 10.1109/JPROC.2004.833796
PG 14
WC Engineering, Electrical & Electronic
SC Engineering
GA 854PY
UT WOS:000223917000014
ER
PT J
AU Parker, GR
Peterson, PD
Asay, BW
Dickson, PM
Perry, WL
Henson, BF
Smilowitz, L
Oldenborg, MR
AF Parker, GR
Peterson, PD
Asay, BW
Dickson, PM
Perry, WL
Henson, BF
Smilowitz, L
Oldenborg, MR
TI Examination of morphological changes that affect gas permeation through
thermally damaged explosives
SO PROPELLANTS EXPLOSIVES PYROTECHNICS
LA English
DT Article
DE image analysis; permeability; PBX 9501; cook-off; deflagration to
detonation transition (DDT)
ID DELTA PHASE-TRANSITION
AB Photomicrography and software-based quantitative image analysis were used to examine microstructural morphology of samples of a plastic bonded explosive, PBX 9501, which had been thermally damaged under varied confinement conditions. Samples were damaged to an advanced state, as would be attained just prior to cook-off. We observed significant changes in morphology, when compared to pristine material, which contribute to higher gas permeability. Changes included the formation of channels and pores, as well as fracturing of the HMX crystalline component. We discuss both qualitative and quantitative observations of morphology and whether they are likely to affect sensitivity and behavior of PBX 9501.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Parker, GR (reprint author), Los Alamos Natl Lab, POB 1663,MS C-920, Los Alamos, NM 87545 USA.
EM gparker@dx-mail.lanl.gov
NR 15
TC 19
Z9 19
U1 1
U2 6
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY
SN 0721-3115
J9 PROPELL EXPLOS PYROT
JI Propellants Explos. Pyrotech.
PD OCT
PY 2004
VL 29
IS 5
BP 274
EP 281
DI 10.1002/prep.200400057
PG 8
WC Chemistry, Applied; Engineering, Chemical
SC Chemistry; Engineering
GA 867AM
UT WOS:000224814500004
ER
PT J
AU Maienschein, JL
Wardell, JF
DeHaven, MR
Black, CK
AF Maienschein, JL
Wardell, JF
DeHaven, MR
Black, CK
TI Deflagration of HMX-based explosives at high temperatures and pressures
SO PROPELLANTS EXPLOSIVES PYROTECHNICS
LA English
DT Article
DE HMX; deflagration; burn rate; high pressure; thermal damage
ID CONDENSED-PHASE DECOMPOSITION; PYROLYSIS PRODUCTS;
OCTAHYDRO-1,3,5,7-TETRANITRO-1,3,5,7-TETRAZOCINE
AB We measure the deflagration behavior of energetic materials at extreme conditions (up to 520 K and 1 GPa) in the LLNL High Pressure Strand Burner, thereby obtaining reaction rate data for prediction of violence of thermal explosions. The apparatus provides both temporal pressure history and flame time-of-arrival information during deflagration, allowing direct calculation of deflagration rate as a function of pressure. Samples may be heated before testing. Here we report the deflagration behavior of several HMX-based explosives at pressures of 10-600 MPa and temperatures of 300-460 K. We find that formulation details are very important to overall deflagration behavior. Formulations with high binder content ( greater than or equal to 15 wt%) deflagrate smoothly over the entire pressure range regardless of particle size, with a larger particle size distribution leading to a slower reaction. The deflagration follows a power law function with the pressure exponent being unity. Formulations with lower binder content (less than or equal to 10 wt% or less) show physical deconsolidation at pressures over 100-200 MPA, with transition to a rapid erratic deflagration 10-100 times faster. High temperatures have a relatively minor effect on the deflagration rate until the HMX beta-->delta phase transition occurs, after which the deflagration rate increases by more than a factor of 10.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Maienschein, JL (reprint author), Lawrence Livermore Natl Lab, POB 808,L-282, Livermore, CA 94550 USA.
EM maienschein1@llnl.gov
NR 21
TC 13
Z9 13
U1 1
U2 12
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY
SN 0721-3115
J9 PROPELL EXPLOS PYROT
JI Propellants Explos. Pyrotech.
PD OCT
PY 2004
VL 29
IS 5
BP 287
EP 295
DI 10.1002/prep.200400061
PG 9
WC Chemistry, Applied; Engineering, Chemical
SC Chemistry; Engineering
GA 867AM
UT WOS:000224814500006
ER
PT J
AU Wu, CJ
Ree, FH
Yoo, CS
AF Wu, CJ
Ree, FH
Yoo, CS
TI A quantum mechanical molecular dynamics study of binary collisions of
pentaerythritol tetranitrate (PETN): Its correlation to shock
sensitivity
SO PROPELLANTS EXPLOSIVES PYROTECHNICS
LA English
DT Article
DE PETN; decomposition; semi-empirical molecular dynamics
ID CRYSTAL ORIENTATION DEPENDENCE; SEMIEMPIRICAL METHODS; OPTIMIZATION;
DETONATION; INITIATION; PARAMETERS; STRENGTH; ENERGY; SHEAR
AB We have carried out semi-empirical quantum mechanical molecular dynamics (MD) simulations involving collisions of two pentaerythritol tetranitrate (PETN) molecules at different molecular orientations and at several intermolecular separations. The common features of reactive scattering among all molecular orientations are (1) the dissociation mechanism of PETN remains unimolecular and (2) the dominant reaction channel is the breaking of an O-NO2 bond. However, the probability of collision-induced decomposition of PETN depends strongly on initial conditions, in agreement with the experimentally observed sensitivity of shock-initiated detonation in bulk PETN along different crystalline orientations. In addition, the next most frequent reaction path shows a dependence on initial orientations.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Wu, CJ (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave,POB 808, Livermore, CA 94551 USA.
EM Wu5@Ilnl.gov
NR 16
TC 23
Z9 29
U1 0
U2 2
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY
SN 0721-3115
J9 PROPELL EXPLOS PYROT
JI Propellants Explos. Pyrotech.
PD OCT
PY 2004
VL 29
IS 5
BP 296
EP 303
DI 10.1002/prep.200400062
PG 8
WC Chemistry, Applied; Engineering, Chemical
SC Chemistry; Engineering
GA 867AM
UT WOS:000224814500007
ER
PT J
AU Abad, PC
Mian, IS
Plachot, C
Nelpurackal, A
Bator-Kelly, C
Lelievre, SA
AF Abad, PC
Mian, IS
Plachot, C
Nelpurackal, A
Bator-Kelly, C
Lelievre, SA
TI The C terminus of the nuclear protein NuMA: Phylogenetic distribution
and structure
SO PROTEIN SCIENCE
LA English
DT Article
DE nuclear mitotic apparatus protein; beta 3-integrin; chordate; mammary
epithelial cells; differentiation
ID ACID RECEPTOR-ALPHA; COILED-COIL; RAR-ALPHA; DOMAIN; MICROTUBULES;
ORGANIZATION; PHENOTYPE; LEUKEMIA; INTEGRIN; CELLS
AB The C terminus of the nuclear protein NuMA, NuMA-CT, has a well-known function in mitosis via its proximal segment, but it seems also involved in the control of differentiation. To further investigate the structure and function of NuMA, we exploited established computational techniques and tools to collate and characterize proteins with regions similar to the distal portion of NuMA-CT (NuMA-CTDP). The phylogenetic distribution of NuMA-CTDP was examined by PSI-BLAST- and TBLASTN-based analysis of genome and protein sequence databases. Proteins and open reading frames with a NuMA-CTDP-like region were found in a diverse set of vertebrate species including mammals, birds, amphibia, and early teleost fish. The potential structure of NuMA-CTDP was investigated by searching a database of protein sequences of known three-dimensional structure with a hidden Markov model (HMM) estimated using representative (human, frog, chicken, and pufferfish) sequences. The two highest scoring sequences that aligned to the HMM were the extracellular domains of beta3-integrin and Her2, suggesting that NuMA-CTDP may have a primarily beta fold structure. These data indicate that NuMA-CTDP may represent an important functional sequence conserved in vertebrates, where it may act as a receptor to coordinate cellular events.
C1 Purdue Univ, Dept Basic Med Sci, W Lafayette, IN 47907 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
RP Lelievre, SA (reprint author), Purdue Univ, Dept Basic Med Sci, 625 Harrison St,LYNN, W Lafayette, IN 47907 USA.
EM lelievre@purdue.edu
NR 22
TC 2
Z9 3
U1 0
U2 1
PU COLD SPRING HARBOR LAB PRESS, PUBLICATIONS DEPT
PI WOODBURY
PA 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2924 USA
SN 0961-8368
J9 PROTEIN SCI
JI Protein Sci.
PD OCT
PY 2004
VL 13
IS 10
BP 2573
EP 2577
DI 10.1110/ps.04906804
PG 5
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 855XH
UT WOS:000224007700003
PM 15388855
ER
PT J
AU Bahns, JT
Liu, CM
Chen, LH
AF Bahns, JT
Liu, CM
Chen, LH
TI Characterizing specific phage-protein interactions by fluorescence
correlation spectroscopy
SO PROTEIN SCIENCE
LA English
DT Article
DE phage-protein interaction; phage display; combinational libraries; M13
phage; T7 phage; fluorescence correlation spectroscopy; dissociation
constants
ID DISPLAY; PHOTON
AB The interactions of several affinity reagent displayed T7 and M13 phage particles with their corresponding target molecules were examined using Fluorescence Correlation Spectroscopy (FCS). Diffusion times, relative fractions of each component in the recognition reactions at the equilibrium state, and ultimately the dissociation constants were deduced from analyzing the fluorescence autocorrelation curves. Although the sample preparation and FCS characterization of icosahedral T7-related systems were relatively straight forward, procedures with filamentous M13-related systems were complicated by the physical size of M13 and its aggregate formation. Methods that accommodate the FCS measurement of the M13 phage via changing confocal optics, fitting procedures, and aggregate discrimination are presented and discussed.
C1 Argonne Natl Lab, Biosci Div, Argonne, IL 60439 USA.
RP Chen, LH (reprint author), Argonne Natl Lab, Biosci Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM lhchen@anl.gov
NR 14
TC 5
Z9 5
U1 0
U2 3
PU COLD SPRING HARBOR LAB PRESS, PUBLICATIONS DEPT
PI WOODBURY
PA 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2924 USA
SN 0961-8368
J9 PROTEIN SCI
JI Protein Sci.
PD OCT
PY 2004
VL 13
IS 10
BP 2578
EP 2587
DI 10.1110/ps.04695704
PG 10
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 855XH
UT WOS:000224007700004
PM 15388856
ER
PT J
AU Sale, K
Faulon, JL
Gray, GA
Schoeniger, JS
Young, MM
AF Sale, K
Faulon, JL
Gray, GA
Schoeniger, JS
Young, MM
TI Optimal bundling of transmembrane helices using sparse distance
constraints
SO PROTEIN SCIENCE
LA English
DT Article
DE helix packing; transmembrane helices; distance constraints; molecular
refinement
ID ELECTRON-PARAMAGNETIC-RESONANCE; CHEMICAL CROSS-LINKING; MALTODEXTRIN
BINDING-PROTEIN; TRANSFORM MASS-SPECTROMETRY; CARBONIC-ANHYDRASE-II;
TOP-DOWN APPROACH; ENERGY-TRANSFER; SPIN-LABELS; TRANSBILAYER HELICES;
MEMBRANE-PROTEINS
AB We present a two-step approach to modeling the transmembrane spanning helical bundles of integral membrane proteins using only sparse distance constraints, such as those derived from chemical cross-linking, dipolar EPR and FRET experiments. In Step 1, using an algorithm, we developed, the conformational space of membrane protein folds matching a set of distance constraints is explored to provide initial structures for local conformational searches. In Step 2, these structures refined against a custom penalty function that incorporates both measures derived from statistical analysis of solved membrane protein structures and distance constraints obtained from experiments. We begin by describing the statistical analysis of the solved membrane protein structures from which the theoretical portion of the penalty function was derived. We then describe the penalty function, and, using a set of six test cases, demonstrate that it is capable of distinguishing helical bundles that are close to the native bundle from those that are far from the native bundle. Finally, using a set of only 27 distance constraints extracted from the literature, we show that our method successfully recovers the structure of dark-adapted rhodopsin to within 3.2 Angstrom of the crystal structure.
C1 Sandia Natl Labs, Biosyst Res Dept, Livermore, CA 94551 USA.
RP Sale, K (reprint author), Sandia Natl Labs, Biosyst Res Dept, POB 969,MS 9951, Livermore, CA 94551 USA.
EM klsale@sandia.gov
NR 78
TC 26
Z9 28
U1 0
U2 3
PU COLD SPRING HARBOR LAB PRESS, PUBLICATIONS DEPT
PI WOODBURY
PA 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2924 USA
SN 0961-8368
J9 PROTEIN SCI
JI Protein Sci.
PD OCT
PY 2004
VL 13
IS 10
BP 2613
EP 2627
DI 10.1110/ps.04781504
PG 15
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 855XH
UT WOS:000224007700007
PM 15340162
ER
PT J
AU Ding, C
He, XF
Meraz, RF
Holbrook, SR
AF Ding, C
He, XF
Meraz, RF
Holbrook, SR
TI A unified representation of multiprotein complex data for modeling
interaction networks
SO PROTEINS-STRUCTURE FUNCTION AND BIOINFORMATICS
LA English
DT Article
DE protein complex; supercomplex; gene ontology; bipartite graphic; cluster
analysis; network biology
ID PROTEIN-PROTEIN INTERACTIONS; SACCHAROMYCES-CEREVISIAE; CHROMATIN
DYNAMICS; MASS-SPECTROMETRY; GENE ONTOLOGY; YEAST; ORGANIZATION;
PREDICTION; MACHINES; BIOLOGY
AB The protein interaction network presents one perspective for understanding cellular processes. Recent experiments employing high-throughput mass spectrometric characterizations have resulted in large data sets of physiologically relevant multiprotein complexes. We present a unified representation of such data sets based on an underlying bipartite graph model that is an advance over existing models of the network. Our unified representation allows for weighting of connections between proteins shared in more than one complex, as well as addressing the higher level organization that occurs when the network is viewed as consisting of protein complexes that share components. This representation also allows for the application of the rigorous MinMaxCut graph clustering algorithm for the determination of relevant protein modules in the networks. Statistically significant annotations of clusters in the protein-protein and complex-complex networks using terms from the Gene Ontology indicate that this method will be useful for posing hypotheses about uncharacterized components of protein complexes or uncharacterized relationships between protein complexes. (C) 2004 Wiley-Liss, Inc.
C1 Lawrence Berkeley Natl Lab, Computat Res Div, Berkeley, CA 94720 USA.
Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA USA.
RP Lawrence Berkeley Natl Lab, Computat Res Div, Berkeley, CA 94720 USA.
EM chqdin@lbl.gov
NR 35
TC 16
Z9 16
U1 0
U2 2
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0887-3585
EI 1097-0134
J9 PROTEINS
JI Proteins
PD OCT 1
PY 2004
VL 57
IS 1
BP 99
EP 108
DI 10.1002/prot.20147
PG 10
WC Biochemistry & Molecular Biology; Biophysics
SC Biochemistry & Molecular Biology; Biophysics
GA 852BX
UT WOS:000223731300009
PM 15326596
ER
PT J
AU Miller, MD
Schwarzenbacher, R
von Delft, F
Abdubek, P
Ambing, E
Biorac, T
Brinen, LS
Canaves, JM
Cambell, J
Chiu, HJ
Dai, XP
Deacon, AM
DiDonato, M
Elsliger, MA
Eshagi, S
Floyd, R
Godzik, A
Grittini, C
Grzechnik, SK
Hampton, E
Jardszewski, L
Karlak, C
Klock, HE
Koesema, E
Kovarik, JS
Kreusch, A
Kuhn, P
Lesley, SA
Levin, I
McMullan, D
McPhillips, TM
Morse, A
Moy, K
Ouyang, J
Page, R
Quijano, K
Robb, A
Spraggon, G
Stevens, RC
van den Bedem, H
Velasquez, J
Vincent, J
Wang, XH
West, B
Wolf, G
Xu, QP
Hodgson, KO
Wooley, J
Wilson, IA
AF Miller, MD
Schwarzenbacher, R
von Delft, F
Abdubek, P
Ambing, E
Biorac, T
Brinen, LS
Canaves, JM
Cambell, J
Chiu, HJ
Dai, XP
Deacon, AM
DiDonato, M
Elsliger, MA
Eshagi, S
Floyd, R
Godzik, A
Grittini, C
Grzechnik, SK
Hampton, E
Jardszewski, L
Karlak, C
Klock, HE
Koesema, E
Kovarik, JS
Kreusch, A
Kuhn, P
Lesley, SA
Levin, I
McMullan, D
McPhillips, TM
Morse, A
Moy, K
Ouyang, J
Page, R
Quijano, K
Robb, A
Spraggon, G
Stevens, RC
van den Bedem, H
Velasquez, J
Vincent, J
Wang, XH
West, B
Wolf, G
Xu, QP
Hodgson, KO
Wooley, J
Wilson, IA
TI Crystal structure of a tandem cystathionine-beta-synthase (CBS) domain
protein (TM0935) from Thermotoga maritima at 1.87 angstrom resolution
SO PROTEINS-STRUCTURE FUNCTION AND BIOINFORMATICS
LA English
DT Article
ID ELECTRON-DENSITY; REFINEMENT
C1 Scripps Res Inst, Joint Ctr Struct Genom, La Jolla, CA 92037 USA.
Stanford Univ, Stanford Synchrotron Radiat Lab, Menlo Pk, CA USA.
Novartis Res Fdn, Genom Inst, San Diego, CA USA.
San Diego Supercomp Ctr, La Jolla, CA USA.
Univ Calif San Diego, La Jolla, CA 92093 USA.
RP Wilson, IA (reprint author), Scripps Res Inst, Joint Ctr Struct Genom, BCC206,10550 N Torrey Pines Rd, La Jolla, CA 92037 USA.
EM wilson@scripps.edu
RI Godzik, Adam/A-7279-2009
OI Godzik, Adam/0000-0002-2425-852X
FU NIGMS NIH HHS [P50 GM62411]
NR 17
TC 28
Z9 29
U1 0
U2 20
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0887-3585
EI 1097-0134
J9 PROTEINS
JI Proteins
PD OCT 1
PY 2004
VL 57
IS 1
BP 213
EP 217
DI 10.1002/prot.20024
PG 5
WC Biochemistry & Molecular Biology; Biophysics
SC Biochemistry & Molecular Biology; Biophysics
GA 852BX
UT WOS:000223731300019
PM 15326606
ER
PT J
AU Branch, D
Baron, E
Thomas, RC
Kasen, D
Li, WD
Filippenko, AV
AF Branch, D
Baron, E
Thomas, RC
Kasen, D
Li, WD
Filippenko, AV
TI Reading the spectra of the most peculiar Type Ia supernova 2002cx
SO PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
LA English
DT Article
ID HIGH-VELOCITY EJECTA; OPTICAL-SPECTRA; 2000CX; CONSEQUENCES; SIGNATURES;
GEOMETRY; 1997BR; 1991T
AB In spite of the apparent lack of Si II and S II features in its spectra, SN 2002cx was classified as a peculiar Type Ia supernova (SN Ia) on the basis of its overall photometric and spectroscopic behavior. Spectra obtained near maximum light contained Fe III features, as in SN 1991T-like events, but the blueshifts of the Fe III absorptions were exceptionally low. The luminosity was also low. We use the supernova synthetic-spectrum code SYNOW to study line identifications in SN 2002cx. We find that the maximum-light spectra appear to contain weak features of Si II, S II, Si III, and Ca II, which strengthens the connection with SN 1991T-like events. We show that later spectra obtained 12, 25, and 56 days after maximum consist of P Cygni resonance-scattering features due to permitted Fe II and Co II lines. SN 2002cx had been thought to have made the transition from a permitted-line to a forbidden-line spectrum between 25 and 56 days. Owing to the low expansion velocities, the postmaximum spectral features are narrower and easier to identify than they are in other SNe Ia. SN 2002cx will lead to improved line identifications in other SNe Ia and will clarify when the transition from a permitted-to a forbidden-line spectrum occurs. In the context of current SN Ia explosion models, we suggest that the properties of SN 2002cx might be consistent with three-dimensional deflagration models, which are not favored for normal SNe Ia.
C1 Univ Oklahoma, Dept Phys & Astron, Norman, OK 73019 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA.
RP Branch, D (reprint author), Univ Oklahoma, Dept Phys & Astron, Norman, OK 73019 USA.
EM branch@nhn.ou.edu
RI Baron, Edward/A-9041-2009
OI Baron, Edward/0000-0001-5393-1608
NR 26
TC 56
Z9 56
U1 0
U2 1
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 OCT
PY 2004
VL 116
IS 824
BP 903
EP 908
DI 10.1086/425081
PG 6
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 862BM
UT WOS:000224464600002
ER
PT J
AU Tiampo, KF
Rundle, JB
Klein, W
Martins, JSS
AF Tiampo, KF
Rundle, JB
Klein, W
Martins, JSS
TI Ergodicity in natural fault systems
SO PURE AND APPLIED GEOPHYSICS
LA English
DT Article; Proceedings Paper
CT 3rd ACES International Workshop
CY MAY 05-10, 2002
CL Maui, HI
ID STATISTICAL-MECHANICS; SOUTHERN-CALIFORNIA; SUPERCOOLED LIQUIDS;
THRESHOLD SYSTEMS; EARTHQUAKES; DYNAMICS; MODELS; EQUILIBRIUM;
SEISMICITY; ENERGY
AB Attempts to understand the physics of earthquakes over the past decade generally have focused on applying methods and theories developed based upon phase transitions, materials science, and percolation theory to a variety of numerical simulations of extended fault networks. This recent work suggests that fault systems can be interpreted as mean-field threshold systems in metastable equilibrium (RUNDLE et al., 1995; KLEIN et al., 1997; FERGUSON et al., 1999), and that these results strongly support the view that seismic activity is highly correlated across many space and time scales within large volumes of the earth's crust (RUNDLE et al., 2000; TIAMPO el al., 2002). In these systems, the time averaged elastic energy of the system fluctuates around a constant value for some period of time and is punctuated by major events that reorder the system before it settles into another metastable energy well. One way to measure the stability of such a system is to check a quantity called the Thirumalai-Mountain (TM) energy metric (THIRUMALAI and MOUNTAIN, 1993; KLEIN et al., 1996). In particular, using this metric, we show that the actual California fault system is ergodic in space and time for the period in question, punctuated by the occurrence of large earthquakes, and that, for individual events in the system, there are correlated regions that are a subset of the larger fault network.
C1 Univ Colorado, CIRES, Boulder, CO 80309 USA.
Univ Western Ontario, Dept Earth Sci, London, ON, Canada.
Univ Calif Davis, Ctr Computat Sci & Engn, Davis, CA 95616 USA.
Boston Univ, Dept Phys, Boston, MA 02215 USA.
Los Alamos Natl Lab, Ctr Nonlinear Sci, Los Alamos, NM 87545 USA.
Univ Fed Fluminense, Inst Fis, BR-24210340 Niteroi, RJ, Brazil.
RP Univ Colorado, CIRES, Boulder, CO 80309 USA.
EM ktiampo@uwo.ca; rundle@physics.ucdavis.edu; klein@buphy.edu;
jssm@if.uff.br
RI Martins, Jorge/F-7780-2012; Tiampo, Kristy/I-1355-2015
OI Tiampo, Kristy/0000-0002-5500-7600
NR 26
TC 3
Z9 4
U1 0
U2 0
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 OCT
PY 2004
VL 161
IS 9-10
BP 1957
EP 1968
DI 10.1007/s00024-004-2542-1
PG 12
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 852HG
UT WOS:000223745800010
ER
PT J
AU Tiampo, KF
Rundle, JB
Klein, W
Ben-Zion, Y
McGinnis, S
AF Tiampo, KF
Rundle, JB
Klein, W
Ben-Zion, Y
McGinnis, S
TI Using eigenpattern analysis to constrain seasonal signals in southern
California
SO PURE AND APPLIED GEOPHYSICS
LA English
DT Article; Proceedings Paper
CT 3rd ACES International Workshop
CY MAY 05-10, 2002
CL Maui, HI
ID OSCILLATION PATTERN-ANALYSIS; 1992 LANDERS; DEFORMATION; DISPLACEMENTS;
DYNAMICS; SERIES; SPACE
AB Earthquake fault systems are now thought to be an example ora complex nonlinear system (BAKE et al., 1987; RUNDLE and KLEIN, 1995). The spatial and temporal complexity of this system translates into a similar complexity in the surface expression of the underlying physics, including deformation and seismicity. Here we show that a new pattern dynamic methodology can be used to define a unique, finite set of deformation patterns for the Southern California Integrated GPS Network (SCIGN). Similar in nature to the empirical orthogonal functions historically employed in the analysis of atmospheric and oceanographic phenomena (PREISENDORFER, 1988), the method derives the eigenvalues and eigenstates from the diagonalization of the correlation matrix using a Karhunen-Loeve expansion (KLE) (FUKUNAGA, 1970; RUNDLE et al., 2000; TIAMPO et al., 2002). This KLE technique may be used to determine the important modes in both time and space for the southern California GPS data, modes that potentially include such time-dependent signals as plate velocities, viscoelasticity, and seasonal effects. Here we attempt to characterize several of the seasonal vertical signals on various spatial scales. These, in turn, can be used to better model geophysical signals of interest such as coseismic deformation, viscoelastic effects, and creep, as well as provide data assimilation and model verification for large-scale numerical simulations of southern California.
C1 Univ Colorado, CIRES, Boulder, CO 80309 USA.
Univ Western Ontario, Dept Earth Sci, London, ON, Canada.
Univ Calif Davis, Ctr Computat Sci & Engn, Davis, CA 95616 USA.
Boston Univ, Dept Phys, Boston, MA 02215 USA.
Los Alamos Natl Lab, Ctr Nonlinear Sci, Los Alamos, NM 87545 USA.
Univ So Calif, Dept Earth Sci, Los Angeles, CA USA.
RP Univ Colorado, CIRES, Boulder, CO 80309 USA.
EM ktiampo@uwo.ca; rundle@physics.ucdavis.edu; klein@buphy.edu;
benzion@terra.use.edu
RI Tiampo, Kristy/I-1355-2015;
OI Tiampo, Kristy/0000-0002-5500-7600; McGinnis, Seth/0000-0001-8082-834X
NR 31
TC 13
Z9 14
U1 0
U2 2
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 OCT
PY 2004
VL 161
IS 9-10
BP 1991
EP 2003
DI 10.1007/s00024-004-2545-y
PG 13
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 852HG
UT WOS:000223745800013
ER
PT J
AU Anghel, M
Ben-Zion, Y
Rico-Martinez, R
AF Anghel, M
Ben-Zion, Y
Rico-Martinez, R
TI Dynamical system analysis and forecasting of deformation produced by an
earthquake fault
SO PURE AND APPLIED GEOPHYSICS
LA English
DT Article; Proceedings Paper
CT 3rd ACES International Workshop
CY MAY 05-10, 2002
CL Maui, HI
DE fault dynamics; surface deformation; earthquake prediction
ID HETEROGENEOUS FAULTS; STRANGE ATTRACTORS; PREDICTABILITY; STRESS;
MODELS; TIME; SLIP
AB We present a method of constructing low-dimensional nonlinear models describing the main dynamical features of a discrete 2-D cellular fault zone, with many degrees of freedom, embedded in a 3-D elastic solid. A given fault system is characterized by a set of parameters that describe the dynamics, rheology, property disorder, and fault geometry. Depending on the location in the system parameter space, we show that the coarse dynamics of the fault can be confined to an attractor whose dimension is significantly smaller than the space in which the dynamics takes place. Our strategy of system reduction is to search for a few coherent structures that dominate the dynamics and to capture the interaction between these coherent structures. The identification of the basic interacting structures is obtained by applying the Proper Orthogonal Decomposition (POD) to the surface deformation fields that accompany strike-slip faulting accumulated over equal time intervals. We use a feed-forward artificial neural network (ANN) architecture for the identification of the system dynamics projected onto the subspace (model space) spanned by the most energetic coherent structures. The ANN is trained using a standard back-propagation algorithm to predict (map) the values of the observed model state at a future time, given the observed model state at the present time. This ANN provides an approximate, large-scale, dynamical model for the fault. The map can be evaluated once to provide a short-term predictions or iterated to obtain a prediction for the long-term fault dynamics.
C1 Los Alamos Natl Lab, Comp & Computat Sci Div, Los Alamos, NM 87544 USA.
Univ So Calif, Dept Earth Sci, Los Angeles, CA USA.
Inst Tecnol Celaya, Dept Chem Engn, Guanajuato, Mexico.
RP Anghel, M (reprint author), Los Alamos Natl Lab, Comp & Computat Sci Div, Los Alamos, NM 87544 USA.
EM manghel@lanl.gov; benzion@usc.edu; ramiro@losalamos.princeton.edu
NR 30
TC 8
Z9 8
U1 0
U2 3
PU BIRKHAUSER VERLAG AG
PI BASEL
PA VIADUKSTRASSE 40-44, PO BOX 133, CH-4010 BASEL, SWITZERLAND
SN 0033-4553
J9 PURE APPL GEOPHYS
JI Pure Appl. Geophys.
PD OCT
PY 2004
VL 161
IS 9-10
BP 2023
EP 2051
DI 10.1007/s00024-004-2547-9
PG 29
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 852HG
UT WOS:000223745800015
ER
PT J
AU Persaud, A
Park, SJ
Liddle, JA
Rangelow, IW
Bokor, J
Keller, R
Allen, FI
Schneider, DH
Schenkel, T
AF Persaud, A.
Park, S. J.
Liddle, J. A.
Rangelow, I. W.
Bokor, J.
Keller, R.
Allen, F. I.
Schneider, D. H.
Schenkel, T.
TI Quantum Computer Development with Single Ion Implantation
SO QUANTUM INFORMATION PROCESSING
LA English
DT Article
DE Electron emission; single electron devices; Coulomb blockade; ion
doping; scanning probe; quantum computation
AB Spins of single donor atoms are attractive candidates for large scale quantum information processing in silicon. Formation of devices with a few qubits is crucial for validation of basic ideas and development of a scalable architecture. We describe our development of a single ion implantation technique for placement of single atoms into device structures. Collimated highly charged ion beams are aligned with a scanning probe microscope. Enhanced secondary electron emission due to high ion charge states (e. g., P-31(13+), or Te-126(33+)) allows efficient detection of single ion impacts. Studies of electrical activation of low dose, low energy implants of P-31 in silicon show a drastic effect of dopant segregation to the SiO2/Si interface, while Si3N4/Si retards P-31 segregation. We discuss resolution limiting factors in ion placement, and process challenges for integration of single atom arrays with control gates and single electron transistors.
C1 [Persaud, A.; Park, S. J.; Liddle, J. A.; Bokor, J.; Keller, R.; Allen, F. I.; Schenkel, T.] EO Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Rangelow, I. W.] Univ Kassel, Inst Microstruct Technol & Analyt, D-34109 Kassel, Germany.
[Bokor, J.] Univ Calif Berkeley, Dept Elect Engn & Comp Sci, Berkeley, CA 94720 USA.
[Schneider, D. H.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Persaud, A (reprint author), EO Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
EM T_Schenkel@LBL.gov
RI Liddle, James/A-4867-2013
OI Liddle, James/0000-0002-2508-7910
FU National Security Agency and Advanced Research and Development Activity
under Army Research Office [MOD707501]; U.S. Department of Energy
[DE-AC03-76SF00098]; U.S. DOE [W-7405-ENG-48]
FX We thank the staff of LBNL's National Center for Electron Microscopy
(NCEM) and the U. C. Berkeley Microlab for their support. This work was
supported by the National Security Agency and Advanced Research and
Development Activity under Army Research Office contract number
MOD707501, and by the U.S. Department of Energy under contract No.
DE-AC03-76SF00098. Work at LLNL was performed under the auspices of the
U.S. DOE under contract No. W-7405-ENG-48.
NR 25
TC 14
Z9 14
U1 0
U2 6
PU SPRINGER
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1570-0755
J9 QUANTUM INF PROCESS
JI Quantum Inf. Process.
PD OCT
PY 2004
VL 3
IS 1-5
BP 233
EP 245
DI 10.1007/s11128-004-3879-1
PG 13
WC Physics, Multidisciplinary; Physics, Mathematical
SC Physics
GA V25UO
UT WOS:000208503100015
ER
PT J
AU Schmidt-Bocking, H
Schmidt, L
Weber, T
Mergel, V
Jagutzki, O
Czasch, A
Hagmann, S
Dorner, R
Demkov, Y
Jahnke, T
Prior, M
Cocke, CL
Osipov, T
Landers, A
AF Schmidt-Bocking, H
Schmidt, L
Weber, T
Mergel, V
Jagutzki, O
Czasch, A
Hagmann, S
Dorner, R
Demkov, Y
Jahnke, T
Prior, M
Cocke, CL
Osipov, T
Landers, A
TI Dynamics of multiple ionization of atoms and molecules by electron,
photon, and ion impact - investigated by the COLTRIMS imaging method
SO RADIATION PHYSICS AND CHEMISTRY
LA English
DT Article; Proceedings Paper
CT 9th International Symposium on Radiation Physics
CY OCT 26-31, 2003
CL Cape Town, SOUTH AFRICA
DE atomic and molecular physics; momentum imaging; many-particle dynamics
ID MULTIPHOTON DOUBLE-IONIZATION; COLLISIONS; HELIUM; SINGLE
AB Fully differential cross-sections in momentum space for multiple ionization processes of atoms and molecules have been investigated by a multi-coincidence imaging technique, called COLTRIMS (cold target recoil ion momentum spectroscopy) (J. Phys. B 30 (1997) 2917; Nucl. Instrum. Methods B 108 (1996) 425; In: Ullrich, J., Shevelko, V.P. (Eds.), Many Particle Quantum Dynamics in Atomic Fragmentation, Series Atomic, Optical, and Plasma Physics, Vol. 35. Springer.. Berlin, 2003; Phys. Rep. 330 (2000) 95). This technique is as powerful as the bubble chamber system in high-energy physics. It has opened a new observation window into the hidden world of many-particle dynamics: correlated many-particle dynamics in Coulombic systems can now be experimentally approached with unprecedented completeness and precision.
The principle of the method, namely measuring the momentum of the emitted charged particles from an atomic or molecular fragmentation process, is as simple as determining the trajectory of a thrown stone. From knowing the position from where the stone was slung and where it hits the target, as well as measuring its time-of-flight, the trajectory of the stone and thus its initial velocity vector can be determined precisely. Furthermore, in order to achieve good precision we have to know whether the person, who throws the stone, was at rest in the frame of observation or with which relative velocity this person was moving. Thus, to obtain optimal momentum resolution for the exploding fragments one has to bring the fragmenting object to a complete rest in the frame of measurement before the reaction occurs, i.e. if the object is a gas atom or molecule one has to cool it down to sub-milli Kelvin temperatures. (C) 2004 Elsevier Ltd. All rights reserved.
C1 Univ Frankfurt, Inst Kernphys, D-60486 Frankfurt, Germany.
LBNL, Berkeley, CA USA.
Kansas State Univ, Manhattan, KS 66506 USA.
Alabama State Univ, Auburn, AL USA.
RP Schmidt-Bocking, H (reprint author), Univ Frankfurt, Inst Kernphys, August Euler Str 6, D-60486 Frankfurt, Germany.
EM schmidtb@ikf.uni-frankfurt.de
RI Doerner, Reinhard/A-5340-2008; Landers, Allen/C-1213-2013; Weber,
Thorsten/K-2586-2013
OI Doerner, Reinhard/0000-0002-3728-4268; Weber,
Thorsten/0000-0003-3756-2704
NR 24
TC 3
Z9 3
U1 0
U2 9
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0969-806X
J9 RADIAT PHYS CHEM
JI Radiat. Phys. Chem.
PD OCT-NOV
PY 2004
VL 71
IS 3-4
BP 627
EP 632
DI 10.1016/j.radphyschem.2004.04.034
PG 6
WC Chemistry, Physical; Nuclear Science & Technology; Physics, Atomic,
Molecular & Chemical
SC Chemistry; Nuclear Science & Technology; Physics
GA 856CB
UT WOS:000224020100004
ER
PT J
AU Einfeld, D
Hasnain, SS
Sayers, Z
Schopper, H
Winick, H
AF Einfeld, D
Hasnain, SS
Sayers, Z
Schopper, H
Winick, H
TI SESAME, a third generation synchrotron light source for the Middle East
region
SO RADIATION PHYSICS AND CHEMISTRY
LA English
DT Article; Proceedings Paper
CT 9th International Symposium on Radiation Physics
CY OCT 26-31, 2003
CL Cape Town, SOUTH AFRICA
DE synchrotron radiation; UNESCO; light source; Middle East
ID RADIATION FACILITY
AB Developed under the auspices of UNESCO, SESAME is being established as an autonomous international research centre in the Middle East/Mediterranean region. It will have as its centrepiece a 2.5 GeV third Generation synchrotron light source with 13 straight sections for insertion devices and an emittance of 26.6 nm-rad. It will provide intense radiation from the IR to hard X-rays to a community that is expected to exceed 1000 users a few years after the start of operation in 2008. (C) 2004 Elsevier Ltd. All rights reserved.
C1 UNESCO, SESAME, Amman 11181, Jordan.
CCLRC, Daresbury Lab, Warrington WA4 4AD, Cheshire, England.
Sabanci Univ, Fac Engn & Nat Sci, TR-81474 Istanbul, Turkey.
CERN, CH-1211 Geneva, Switzerland.
SLAC, SSRL, Menlo Pk, CA 94025 USA.
RP Winick, H (reprint author), Stanford Univ, MS 69,POB 4349, Stanford, CA 94309 USA.
EM winick@slac.stanford.edu
NR 6
TC 5
Z9 5
U1 0
U2 1
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0969-806X
J9 RADIAT PHYS CHEM
JI Radiat. Phys. Chem.
PD OCT-NOV
PY 2004
VL 71
IS 3-4
BP 693
EP 700
DI 10.1016/j.radphyschem.2004.04.031
PG 8
WC Chemistry, Physical; Nuclear Science & Technology; Physics, Atomic,
Molecular & Chemical
SC Chemistry; Nuclear Science & Technology; Physics
GA 856CB
UT WOS:000224020100023
ER
PT J
AU Vilaithong, T
Yu, LD
Apavatjrut, P
Phanchaisri, B
Sanpuenyongpipat, S
Anuntalabhochai, S
Brown, IG
AF Vilaithong, T
Yu, LD
Apavatjrut, P
Phanchaisri, B
Sanpuenyongpipat, S
Anuntalabhochai, S
Brown, IG
TI Heavy ion induced DNA transfer in biological cells
SO RADIATION PHYSICS AND CHEMISTRY
LA English
DT Article; Proceedings Paper
CT 9th International Symposium on Radiation Physics
CY OCT 26-31, 2003
CL Cape Town, SOUTH AFRICA
DE low-energy heavy ion; ion bombardment; DNA transfer; biological cells
ID BEAM; WALL
AB Low-energy ion beam bombardment of biological materials for genetic modification purposes has experienced rapid growth in the last decade, particularly for the direct DNA transfer into living organisms including both plants and bacteria. Attempts have been made to understand the mechanisms involved in ion-bombardment-induced direct gene transfer into biological cells. Here we summarize the present status of the application of low-energy ions for genetic modification of living sample materials. (C) 2004 Elsevier Ltd. All rights reserved.
C1 Chiang Mai Univ, Fac Sci, Dept Phys, Fast Neutron Res Facil, Chiang Mai 50200, Thailand.
Chiang Mai Univ, Fac Agr, Dept Hort, Chiang Mai 50200, Thailand.
Chiang Mai Univ, Inst Sci & Technol Res & Dev, Chiang Mai 50200, Thailand.
Chiang Mai Univ, Fac Sci, Dept Biol, Chiang Mai 50200, Thailand.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Vilaithong, T (reprint author), Chiang Mai Univ, Fac Sci, Dept Phys, Fast Neutron Res Facil, Chiang Mai 50200, Thailand.
EM thirapat@fnrf.science.cmu.ac.th
NR 21
TC 16
Z9 23
U1 1
U2 2
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0969-806X
J9 RADIAT PHYS CHEM
JI Radiat. Phys. Chem.
PD OCT-NOV
PY 2004
VL 71
IS 3-4
BP 927
EP 935
DI 10.1016/j.radphyschem.2004.04.136
PG 9
WC Chemistry, Physical; Nuclear Science & Technology; Physics, Atomic,
Molecular & Chemical
SC Chemistry; Nuclear Science & Technology; Physics
GA 856CB
UT WOS:000224020100079
ER
PT J
AU Frigo, SP
McNulty, I
Richmond, RC
Ehret, CF
AF Frigo, SP
McNulty, I
Richmond, RC
Ehret, CF
TI Photoabsorption study of Bacillus megaterium, DNA and related biological
materials in the phosphorus K-shell edge region
SO RADIATION RESEARCH
LA English
DT Article
ID X-RAY-ABSORPTION; SYNCHROTRON-RADIATION; SPORES; CELLS; DIFFRACTION;
SPECTRA
AB We measured the X-ray transmission spectra of several biologically related samples in the phosphorus K-shell edge absorption region. These include red phosphorus, hydrated sodium phosphate (Na(3)PO(4)(.)12 H2O), deoxyribonucleic acid (DNA), adenosine triphosphate (ATP), diolylphosphatidyl choline (DOPC), and Bacillus megaterium spores. Red phosphorus essentially displays an edge-jump. All other spectra are similar in form and energy position: Each is dominated by a narrower, more intense first peak and a broader but less intense second peak. The corresponding K-shell edge absorption thresholds are shifted toward higher energy relative to that for red phosphorus, as expected for increasing degrees of phosphorus oxidation. The B. megaterium spectrum has aspects common to both the phosphate and DNA spectra and is therefore interpreted as a composite of spectra arising from DNA, ribonucleic acid (RNA) and phosphates within the spore. The B. megaterium spore spectrum provides information for resonant radiation damage studies in the phosphorus K-shell edge absorption region by identifying candidate photoexcitations. In addition, the absorption spectra will be useful in X-ray microscopy and macromolecular crystallography studies at the phosphorus K-shell edge. (C) 2004 by Radiation Research Society.
C1 No Arizona Univ, Dept Phys & Astron, Flagstaff, AZ 86011 USA.
Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
NASA, Marshall Space Flight Ctr, Huntsville, AL 35812 USA.
Gen Chronobion, Clarendon Hills, IL 60514 USA.
RP Frigo, SP (reprint author), No Arizona Univ, Dept Phys & Astron, POB 6010, Flagstaff, AZ 86011 USA.
EM sean.frigo@nau.edu
NR 23
TC 0
Z9 0
U1 1
U2 2
PU RADIATION RESEARCH SOC
PI OAK BROOK
PA 820 JORIE BOULEVARD, OAK BROOK, IL 60523 USA
SN 0033-7587
J9 RADIAT RES
JI Radiat. Res.
PD OCT
PY 2004
VL 162
IS 4
BP 464
EP 468
DI 10.1667/RR3132
PG 5
WC Biology; Biophysics; Radiology, Nuclear Medicine & Medical Imaging
SC Life Sciences & Biomedicine - Other Topics; Biophysics; Radiology,
Nuclear Medicine & Medical Imaging
GA 892IF
UT WOS:000226643100015
PM 15447035
ER
PT J
AU Cohen, JS
AF Cohen, JS
TI Capture of negative exotic particles by atoms, ions and molecules
SO REPORTS ON PROGRESS IN PHYSICS
LA English
DT Review
ID EFFECTIVE HAMILTONIAN-STRUCTURE; DIABATIC-STATE TREATMENT; MONTE-CARLO
CALCULATION; LOW-ENERGY COLLISIONS; X-RAY CASCADE; COULOMB-CAPTURE;
HYDROGEN-ATOMS; MUON-CAPTURE; PROTONIUM FORMATION; SLOW ANTIPROTON
AB This article describes the capture of heavy negative particles (mu(-), pi(-), K-, (p) over bar) by normal atoms, ions and molecules to form exotic systems. Capture by even the hydrogen atom presents great challenges for theoretical treatment. The wide variety of methods used are reviewed, including perturbative, two-state adiabatic and diabatic, time-independent quantum mechanical, time-dependent semiclassical and quantum mechanical and quasi-classical treatments. A few of these methods, as well as the Fermi-Teller model, have also been applied to heavier atomic targets. Most of the methods, other than the quasi-classical formulations, are not yet up to treating the dynamical electron correlation and multiple ionization found to be important in capture by multi-electron atoms, or the vibronic coupling found to be important in capture by simple molecules. The essential elements of potentially more rigorous quantum mechanical theories are characterized. The experimental data on capture states and relative capture probabilities in mixtures are also discussed. The connection of this experimental data to the theoretical capture calculations is fairly tenuous, but forthcoming experiments with antiprotons promise direct tests of some of the recent theoretical findings.
C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
EM cohen@lanl.gov
NR 128
TC 60
Z9 60
U1 0
U2 4
PU IOP PUBLISHING LTD
PI BRISTOL
PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
SN 0034-4885
EI 1361-6633
J9 REP PROG PHYS
JI Rep. Prog. Phys.
PD OCT
PY 2004
VL 67
IS 10
BP 1769
EP 1819
AR PII S0034-4885(04)38953-0
DI 10.1088/0034-4885/67/10/R02
PG 51
WC Physics, Multidisciplinary
SC Physics
GA 868HK
UT WOS:000224904500002
ER
PT J
AU Lowney, DP
Heimann, PA
Padmore, HA
Gullikson, EM
MacPhee, AG
Falcone, RW
AF Lowney, DP
Heimann, PA
Padmore, HA
Gullikson, EM
MacPhee, AG
Falcone, RW
TI Characterization of CsI photocathodes at grazing incidence for use in a
unit quantum efficiency x-ray streak camera
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID SECONDARY-ELECTRON EMISSION; WAVELENGTH BAND 1-300; PHOTO-CATHODES;
ALKALI-HALIDES; ENERGY-RANGE; INSULATORS; SEMICONDUCTORS; TRANSMISSION;
REFLECTION; RESOLUTION
AB The performance of CsI photocathodes has been characterized for use with grazing incidence soft x rays. The total electron yield and pulsed quantum efficiency of a CsI photocathode has been measured in a reflection geometry as a function of photon energy (100 eV to 1 keV), angle of incidence, and the electric field between the anode and photocathode. The total electron yield and pulsed quantum efficiency increase as the x-ray penetration depth approaches the secondary electron escape depth. Unit quantum efficiency in a grazing incidence geometry is demonstrated. A weak electric-field dependence is observed for the total yield measurements; while no significant dependence is found for the pulsed quantum efficiency. The effect of the pulse height distribution on the detective quantum efficiency is discussed. Theoretical predictions agree accurately with experiment. (C) 2004 American Institute of Physics.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Expt Syst Grp, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Xray Opt, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
Dublin City Univ, Res Inst Networks & Commun Engn, Dublin 9, Ireland.
RP Lowney, DP (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Expt Syst Grp, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM dplowney@lbl.gov
NR 29
TC 9
Z9 11
U1 0
U2 4
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 OCT
PY 2004
VL 75
IS 10
BP 3131
EP 3137
DI 10.1063/1.1790558
PN 1
PG 7
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EE
UT WOS:000224755800006
ER
PT J
AU Du, X
Bailey, K
Lu, ZT
Mueller, P
O'Connor, TP
Young, L
AF Du, X
Bailey, K
Lu, ZT
Mueller, P
O'Connor, TP
Young, L
TI An atom trap system for practical Kr-81 dating
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID METASTABLE KRYPTON; MASS-SPECTROMETRY; ATMOSPHERE
AB Kr-81 (t(1/2)=2.3x10(5) yr, Kr-81/Krsimilar to6x10(-13)) is a long-lived cosmogenic isotope, which is ideal for dating old groundwater and ice in the age range of 50,000 years to 1 million years. Here, we describe the apparatus and performance of an atom-counting system for practical Kr-81 dating. This system is based upon the atom trap trace analysis method that was first demonstrated in 1999. Since then, significant improvements have been made to increase the system efficiency and to reduce the required krypton sample size. For a modern krypton gas sample of 100 mul STP, which contains 1.2x10(6) Kr-81 atoms, the system can accumulate approximately 240 Kr-81 counts in 20 h, thereby reaching a counting efficiency of 2x10(-4). Detailed studies have been conducted to characterize the performance of this system. This system has been calibrated with a low-level counting method and has been used for Kr-81 dating of ancient groundwater from the Nubian Aquifer (Egypt). It can also be used to measure the isotopic abundance of a fission-produced isotope Kr-85 (t(1/2)=10.76 year,Kr-85/Krsimilar to2x10(-11)). (C) 2004 American Institute of Physics.
C1 Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
Northwestern Univ, Dept Phys, Evanston, IL 60208 USA.
Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA.
RP Du, X (reprint author), Univ Texas, Dept Phys, Austin, TX 78712 USA.
EM du@physics.utexas.edu; lu@anl.gov
RI Mueller, Peter/E-4408-2011
OI Mueller, Peter/0000-0002-8544-8191
NR 14
TC 14
Z9 16
U1 1
U2 8
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 OCT
PY 2004
VL 75
IS 10
BP 3224
EP 3232
DI 10.1063/1.1790562
PN 1
PG 9
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EE
UT WOS:000224755800020
ER
PT J
AU Drake, IJ
Liu, TCN
Gilles, M
Tyliszczak, T
Kilcoyne, ALD
Shuh, DK
Mathies, RA
Bell, AT
AF Drake, IJ
Liu, TCN
Gilles, M
Tyliszczak, T
Kilcoyne, ALD
Shuh, DK
Mathies, RA
Bell, AT
TI An in situ cell for characterization of solids by soft x-ray absorption
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID ADVANCED LIGHT-SOURCE; ENERGY-RANGE; PHOTOEMISSION; SPECTROSCOPY;
CATALYSIS
AB A cell has been designed and fabricated for in situ characterization of catalysts and environmental materials using soft x-ray absorption spectroscopy and spectromicroscopy at photon energies above 250 eV. "Lab-on-a-chip" technologies were used to fabricate the cell on a glass wafer. The sample compartment is 1.0 mm in diameter and has a gas path length of 0.8 mm to minimize x-ray absorption in the gas phase. The sample compartment can be heated to 533 K by an Al resistive heater and gas flows up to 5.0 cm(3) min(-1) can be supplied to the sample compartment through microchannels. The performance of the cell was tested by acquiring Cu L-3-edge x-ray appearance near-edge structure (XANES) data during the reduction and oxidation of a silica-supported Cu catalyst using the beam line 11.0.2 scanning transmission x-ray microscope (STXM) at the Advanced Light Source of Lawrence Berkeley National Laboratory (Berkeley, CA). Two-dimensional images of individual catalyst particles were recorded at photon energies between 926 and 937 eV, the energy range in which the Cu(II) and Cu(I) L-3 absorption edges are observed. Oxidation state specific images of the catalyst clearly show the disappearance of Cu(II) species during the exposure of the oxidized sample to 4% CO in He while increasing the temperature from 308 to 473 K. Reoxidation restores the intensity of the image associated with Cu(II). Cu L-3-edge XANES spectra obtained from stacks of STXM images show that with increasing temperature the Cu(II) peak intensity decreases as the Cu(I) peak intensity increases. (C) 2004 American Institute of Physics.
C1 Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA.
RP Bell, AT (reprint author), Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA.
EM bell@cchem.berkeley.edu
RI Kilcoyne, David/I-1465-2013;
OI Bell, Alexis/0000-0002-5738-4645
NR 22
TC 30
Z9 30
U1 1
U2 19
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 OCT
PY 2004
VL 75
IS 10
BP 3242
EP 3247
DI 10.1063/1.1791320
PN 1
PG 6
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EE
UT WOS:000224755800023
ER
PT J
AU DeMange, P
Carr, CW
Radousky, HB
Demos, SG
AF DeMange, P
Carr, CW
Radousky, HB
Demos, SG
TI System for evaluation of laser-induced damage performance of optical
materials for large aperture lasers
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article
ID POTASSIUM DIHYDROGEN PHOSPHATE; RAPID-GROWTH; DKDP CRYSTALS; BREAKDOWN;
KH2PO4
AB The evaluation of optical components in various laser systems, with regard to their resistance to laser-induced damage, has often relied on measuring damage threshold fluences. For large-aperture laser systems a small amount of damage in optics does not impede performance. This necessitates the development of damage testing instrumentation that can directly provide information regarding beam obscuration. The number and size of damage scattering sites for a specific laser fluence, wavelength, and pulse duration determine overall beam losses due to damage. We present a design for rapid quantitative characterization of bulk damage performance of optical materials for use in large-aperture laser systems. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
Univ Calif Davis, Dept Phys, Davis, CA 95616 USA.
RP DeMange, P (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94551 USA.
EM demange1@llnl.gov
RI Carr, Chris/F-7163-2013
NR 20
TC 40
Z9 43
U1 4
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 3298
EP 3301
DI 10.1063/1.1791319
PN 1
PG 4
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EE
UT WOS:000224755800032
ER
PT J
AU Carey, CS
Furno, I
Weisen, H
Behn, R
Fable, E
Angioni, C
AF Carey, CS
Furno, I
Weisen, H
Behn, R
Fable, E
Angioni, C
TI Application of the singular value decomposition method for inversion of
interferometer measurements in fusion plasmas
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID TOKAMAK; TCV
AB We present applications of a recently developed method, the singular value decomposition inversion (SVD-I), for inverting line integrated multichannel interferometer measurements in fusion devices. The method expands the local electron density profiles into a limited series of orthogonal basis functions formed from the singular value decomposition of Thomson scattering measurements, which are obtained at much lower frequencies than the interferometer data. Because these basis functions are formed from a local measurement of the electron densities in the same plasmas, they are well adapted to the class of density profiles to be reconstructed. Using this expansion, the inversion of the interferometer data are reduced to solving an overdetermined set of equations. SVD-I is significantly faster than regularization methods and more accurate for reconstructing hollow profiles. This method, which combines the high bandwidth of interferometer systems with the spatial accuracy of Thomson scattering, is applied to invert data from a 14-chord interferometer on the TCV tokamak. (C) 2004 American Institute of Physics.
C1 Los Alamos Natl Lab, Los Alamos, NM 87544 USA.
EPFL, Ctr Rech Phys Plasmas, Assoc EURATOM Confederat Suisse, CH-1015 Lausanne, Switzerland.
Max Planck Inst Plasma Phys, D-85748 Garching, Germany.
RP Carey, CS (reprint author), Los Alamos Natl Lab, MS E526, Los Alamos, NM 87544 USA.
EM henri.weisen@epfl.ch
NR 8
TC 2
Z9 2
U1 0
U2 2
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 OCT
PY 2004
VL 75
IS 10
BP 3411
EP 3413
DI 10.1063/1.1779613
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900009
ER
PT J
AU Lee, KC
Domier, CW
Johnson, M
Luhmann, NC
Park, H
AF Lee, KC
Domier, CW
Johnson, M
Luhmann, NC
Park, H
TI Edge density fluctuation characterization in H-mode and polarimetry
measurement via the FIReTIP system on NSTX
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID SPHERICAL TORUS EXPERIMENT
AB The edge interferometry channel of the far infrared tangential interferometer polarimeter (FIReTIP) is used to characterize the localized edge density fluctuations during the L/H transition in conjunction with other edge diagnostic systems on the National Spherical Tokamak Experiment (NSTX). With the high IF frequency employing a "Stark-tuned" laser as local oscillator, it is possible to measure the absolute level of fluctuations at high time resolution. Density fluctuation measurements using FIReTIP are feasible at both the high field side and the low field side boundary throughout the plasma shot. The normalized level of measured density fluctuations was in the range of 0.01-0.3 depending upon the channel location and the plasma confinement. The experimental results showed that the sampling rate of 500 KHz was sufficiently high to produce valuable frequency spectral information during the L/H transition, ELMs period and TAE/f.b.s activities. The improved polarimetry measurement was introduced for the para/diamagnetic study of the NSTX plasma. Multichannel operation of FIReTIP with high resolution density measurement provides promising opportunities as a density fluctuation diagnostic system for turbulence/transport and boundary physics studies as well as the robust density measurement for plasma operation. In this article, a brief description of the upgraded portion of the FIReTIP system will be given together with the experimental results of spectral analysis of the edge fluctuations and assessments on polarimetry signals. (C) 2004 American Institute of Physics.
C1 Univ Calif Davis, Davis, CA 95616 USA.
Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Lee, KC (reprint author), Univ Calif Davis, Davis, CA 95616 USA.
EM kclee@pppl.gov
NR 6
TC 6
Z9 6
U1 0
U2 4
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 OCT
PY 2004
VL 75
IS 10
BP 3433
EP 3435
DI 10.1063/1.1786644
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900016
ER
PT J
AU Wang, ZH
Wurden, GA
AF Wang, ZH
Wurden, GA
TI Hypervelocity dust beam injection for national spherical torus
experiment
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID MICROPARTICLES; ACCELERATION; IMPACTS
AB An internal magnetic field measurement technique using hypervelocity dust beam injection is described for eventual implementation on the National Spherical Torus experiment. The principle of the diagnostic has been described previously [Wang and Wurden, Rev. Sci. Instrum. 74, 1887 (2003)]. Approximately 200 kV of electrostatic potential will be used to accelerate multiple dust particles to velocities in the range of 1.0-10 km/s. A fast framing camera will be used to visualize and map two-dimensional internal magnetic field structure from the orientation of the visible light emissions generated by the plumes associated with the hypervelocity dust. (C) 2004 American Institute of Physics.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Wang, ZH (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM zwang@lanl.gov
RI Wurden, Glen/A-1921-2017
OI Wurden, Glen/0000-0003-2991-1484
NR 12
TC 7
Z9 8
U1 0
U2 2
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 OCT
PY 2004
VL 75
IS 10
BP 3436
EP 3438
DI 10.1063/1.1784529
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900017
ER
PT J
AU Hillis, DL
Fehling, DT
Bell, RE
Johnson, DW
Zastrow, KD
Meigs, A
Negus, C
Giroud, C
Stamp, M
AF Hillis, DL
Fehling, DT
Bell, RE
Johnson, DW
Zastrow, KD
Meigs, A
Negus, C
Giroud, C
Stamp, M
CA JET-EFDA Contributors
TI A high throughput spectrometer system for helium ash detection on JET
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID TOKAMAK
AB Acquiring information about helium ash production and transport is fundamental for future burning plasma devices, such as International Thermonuclear Experimental Reactor, since the helium ash must be continuously removed from the plasma to prevent the dilution of the deuterium-tritium (DT) fuel. This diagnostic for future JET DT operation uses charge-exchange recombination spectroscopy (CXRS) in conjunction with the JET neutral heating beam to measure the helium density at 20 radial locations across the JET plasma via the 4686 Angstrom He+ line and an array of heated 1 mm quartz fibers. The CXRS diagnostic utilizes a high throughput short focal length spectrometer with f/1.8 input optics, two entrance slits, a holographic transmission grating, and refractive optics. The detector is a thinned back-illuminated charge coupled device that has high quantum efficiency, a 10 MHz readout speed, and a time resolution of 5 ms. (C) 2004 American Institute of Physics.
C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
UKAEA Euratom Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England.
RP Hillis, DL (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
EM hillisdl@ornl.gov
NR 4
TC 11
Z9 11
U1 1
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 3449
EP 3451
DI 10.1063/1.1784530
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900021
ER
PT J
AU Burrell, KH
Gohil, P
Groebner, RJ
Kaplan, DH
Robinson, JI
Solomon, WM
AF Burrell, KH
Gohil, P
Groebner, RJ
Kaplan, DH
Robinson, JI
Solomon, WM
TI Improved charge-coupled device detectors for high-speed, charge exchange
spectroscopy studies on the DIII-D tokamak
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID RECOMBINATION SPECTROSCOPY
AB Charge exchange spectroscopy is one of the key ion diagnostics on the DIII-D tokamak. It allows determination of ion temperature, poloidal and toroidal velocity, impurity density, and radial electric field E-r throughout the plasma. For the 2003 experimental campaign, we replaced the intensified photodiode array detectors on the central portion of the DIII-D charge exchange spectroscopy system with advanced charge-coupled device (CCD) detectors mounted on faster (f/4.7) Czerny-Turner spectrometers equipped with toroidal mirrors. The CCD detectors are improved versions of the ones installed on our edge system in 1999. The combination improved the photoelectron signal level by about a factor of 20 and the signal to noise by a factor of 2-8, depending on the absolute signal level. The new cameras also allow shorter minimum integration times while archiving to PC memory: 0.552 ms for the slower, lower-read noise (15 e) readout mode and 0.274 ms in the faster, higher-read noise (30 e) mode. (C) 2004 American Institute of Physics.
C1 Gen Atom Co, San Diego, CA 92186 USA.
Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Burrell, KH (reprint author), Gen Atom Co, POB 85608, San Diego, CA 92186 USA.
EM burrell@fusion.gat.com
OI Solomon, Wayne/0000-0002-0902-9876
NR 7
TC 35
Z9 35
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 3455
EP 3457
DI 10.1063/1.1787949
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900023
ER
PT J
AU Foley, EL
Levinton, FM
AF Foley, EL
Levinton, FM
TI Development of the motional Stark effect with laser-induced fluorescence
diagnostic
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID TORUS; PLASMAS
AB The motional Stark effect diagnostic (MSE) is presently a widely accepted technique for measuring the magnetic field pitch angle in high field (>1 T) plasma devices. A hydrogen neutral beam passing through a magnetic field perceives upsilonxB electric field, and its Balmer-alpha spectral emission is split and polarized by the linear Stark effect. The technique cannot be readily used at lower magnetic fields, due to loss of polarization fraction when lines of different polarization overlap due to line broadening which is on the order of the separation. This article describes the development of a technique to extend the capability of MSE to include lower fields (0.01 T and up) and the field magnitude as well as direction. The technique employs laser-induced fluorescence on a diagnostic neutral beam. The narrow-band laser and low energy spread neutral beam allow the observed linewidths to be significantly narrower than these observed from previously employed collisionally induced fluorescence systems. (C) 2004 American Institute of Physics.
C1 Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
Nova Photon Inc, Princeton, NJ USA.
RP Foley, EL (reprint author), Princeton Univ, Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
EM efoley@princeton.edu
NR 14
TC 6
Z9 6
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 3462
EP 3464
DI 10.1063/1.1779616
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900025
ER
PT J
AU Solomon, WM
Burrell, KH
Gohil, P
Groebner, RJ
Baylor, LR
AF Solomon, WM
Burrell, KH
Gohil, P
Groebner, RJ
Baylor, LR
TI Extraction of poloidal velocity from charge exchange recombination
spectroscopy measurements
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
AB An approach has been implemented on the DIII-D tokamak to allow the correct determination of the plasma poloidal velocity from charge exchange spectroscopy measurements. Unlike usual techniques, the need for detailed atomic physics calculations to properly interpret the results is alleviated. Instead, the needed atomic physics corrections are self-consistently determined directly from the measurements, by making use of specially chosen viewing chords. Modeling results are presented that were used to determine a set of views capable of measuring the correction terms. We present the analysis of a quiescent H-mode discharge, illustrating that significant modifications to the velocity profiles are required in these high ion temperature conditions. We also present preliminary measurements providing a direct comparison of the standard cross-section correction to the atomic physics calculations. (C) 2004 American Institute of Physics.
C1 Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
Gen Atom Co, San Diego, CA 92186 USA.
Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Solomon, WM (reprint author), Princeton Univ, Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
EM wsolomon@pppl.gov
OI Solomon, Wayne/0000-0002-0902-9876
NR 3
TC 31
Z9 31
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 3481
EP 3486
DI 10.1063/1.1790042
PN 2
PG 6
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900031
ER
PT J
AU Seguin, FH
DeCiantis, JL
Frenje, JA
Kurebayashi, S
Li, CK
Rygg, JR
Chen, C
Berube, V
Schwartz, BE
Petrasso, RD
Smalyuk, VA
Marshall, FJ
Knauer, JP
Delettrez, JA
McKenty, PW
Meyerhofer, DD
Roberts, S
Sangster, TC
Mikaelian, K
Park, HS
AF Seguin, FH
DeCiantis, JL
Frenje, JA
Kurebayashi, S
Li, CK
Rygg, JR
Chen, C
Berube, V
Schwartz, BE
Petrasso, RD
Smalyuk, VA
Marshall, FJ
Knauer, JP
Delettrez, JA
McKenty, PW
Meyerhofer, DD
Roberts, S
Sangster, TC
Mikaelian, K
Park, HS
TI (DHe)-He-3-proton emission imaging for inertial-confinement-fusion
experiments (invited)
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID NATIONAL-IGNITION-FACILITY; LASER-DRIVEN IMPLOSIONS; BUBBLE DETECTORS;
TARGETS; CAPSULES; PLASMAS; DESIGN; SYMMETRY; OMEGA
AB Proton emission imaging cameras, in combination with proton spectrometers and a proton temporal diagnostic, provide a great deal of information about the spatial structure and time evolution of inertial-confinement fusion capsule implosions. When used with (DHe)-He-3-filled capsules, multiple proton emission imaging cameras measure the spatial distribution of fusion burn, with three-dimensional information about burn symmetry. Simultaneously, multiple spectrometers measure areal density as a function of angle around the imploded capsule. Experiments at the OMEGA laser facility [T. R. Boehly , Opt. Commun. 133, 495 (1997)] have already proven the utility of this approach. An introduction to the hardware used for penumbral imaging, and algorithms used to create images of the burn region, are provided here along with simple scaling laws relating image resolution and signal-to-noise ratio to characteristics of the cameras and the burn region. (C) 2004 American Institute of Physics.
C1 MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA.
Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA.
Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Univ Rochester, Dept Mech Engn & Phys, Rochester, NY 14627 USA.
Univ Rochester, Dept Astron, Rochester, NY 14627 USA.
RP Seguin, FH (reprint author), MIT, Plasma Sci & Fus Ctr, 77 Massachusetts Ave, Cambridge, MA 02139 USA.
EM seguin@mit.edu
NR 48
TC 28
Z9 30
U1 0
U2 4
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 OCT
PY 2004
VL 75
IS 10
BP 3520
EP 3525
DI 10.1063/1.1788892
PN 2
PG 6
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900043
ER
PT J
AU Mackinnon, AJ
Patel, PK
Town, RP
Edwards, MJ
Phillips, T
Lerner, SC
Price, DW
Hicks, D
Key, MH
Hatchett, S
Wilks, SC
Borghesi, M
Romagnani, L
Kar, S
Toncian, T
Pretzler, G
Willi, O
Koenig, M
Martinolli, E
Lepape, S
Benuzzi-Mounaix, A
Audebert, P
Gauthier, JC
King, J
Snavely, R
Freeman, RR
Boehlly, T
AF Mackinnon, AJ
Patel, PK
Town, RP
Edwards, MJ
Phillips, T
Lerner, SC
Price, DW
Hicks, D
Key, MH
Hatchett, S
Wilks, SC
Borghesi, M
Romagnani, L
Kar, S
Toncian, T
Pretzler, G
Willi, O
Koenig, M
Martinolli, E
Lepape, S
Benuzzi-Mounaix, A
Audebert, P
Gauthier, JC
King, J
Snavely, R
Freeman, RR
Boehlly, T
TI Proton radiography as an electromagnetic field and density perturbation
diagnostic (invited)
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID ION-ACCELERATION; MOIRE FRINGES; SOLID TARGETS; LASER-PULSES; PLASMA;
ELECTRONS; TRANSPORT; EMISSION; BEAMS
AB Laser driven proton beams have been used to diagnose transient fields and density perturbations in laser produced plasmas. Grid deflectometry techniques have been applied to proton radiography to obtain precise measurements of proton beam angles caused by electromagnetic fields in laser produced plasmas. Application of proton radiography to laser driven implosions has demonstrated that density conditions in compressed media can be diagnosed with million electron volt protons. This data has shown that proton radiography can provide unique insight into transient electromagnetic fields in super critical density plasmas and provide a density perturbation diagnostics in compressed matter. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Queens Univ Belfast, Dept Phys, Belfast, Antrim, North Ireland.
Univ Dusseldorf, D-4000 Dusseldorf, Germany.
Ecole Polytech, F-91128 Palaiseau, France.
CEA, Bordeaux, France.
Univ Calif Davis, Davis, CA 95616 USA.
Laser Energet Lab, Rochester, NY USA.
RP Mackinnon, AJ (reprint author), Lawrence Livermore Natl Lab, POB 808,L-399, Livermore, CA 94550 USA.
EM mackinnon2@LLNL.GOV
RI Kar, Satyabrata/E-5220-2010; Patel, Pravesh/E-1400-2011; Koenig,
Michel/A-2167-2012; Borghesi, Marco/K-2974-2012; Hicks,
Damien/B-5042-2015; MacKinnon, Andrew/P-7239-2014
OI Hicks, Damien/0000-0001-8322-9983; MacKinnon, Andrew/0000-0002-4380-2906
NR 27
TC 97
Z9 98
U1 1
U2 19
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 OCT
PY 2004
VL 75
IS 10
BP 3531
EP 3536
DI 10.1063/1.1788893
PN 2
PG 6
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900045
ER
PT J
AU Glebov, VY
Stoeckl, C
Sangster, TC
Roberts, S
Schmid, GJ
Lerche, RA
Moran, MJ
AF Glebov, VY
Stoeckl, C
Sangster, TC
Roberts, S
Schmid, GJ
Lerche, RA
Moran, MJ
TI Prototypes of National Ignition Facility neutron time-of-flight
detectors tested on OMEGA
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID DIAGNOSTICS
AB Prototypes of several National Ignition Facility (NIF) neutron time-of-flight (nTOF) detectors have been built and tested on OMEGA. One group uses a plastic scintillator coupled with a microchannel plate (MCP) photomultiplier tube (PMT), either a single-stage (gain up to 10(3)) MCP PMT and a two-stage (gain up to 10(6)) MCP PMT. Two ultrafast scintillators-BC-422 and BC-422Q-were used. Another nTOF prototype is based on a synthetic diamond wafer produced by the chemical vapor deposition. The nTOF detectors were tested on DD (2.45 MeV) and DT (14.1 MeV) neutron-producing implosions on OMEGA. Based on the results of these tests, a set of nTOF detectors is proposed for use on the NIF to measure ion temperature and DD and DT neutron yields from 10(9) to 10(19). (C) 2004 American Institute of Physics.
C1 Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA.
Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Univ Rochester, Laser Energet Lab, 250 E River Rd, Rochester, NY 14623 USA.
EM vgle@lle.rochester.edu
NR 13
TC 44
Z9 47
U1 0
U2 5
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 OCT
PY 2004
VL 75
IS 10
BP 3559
EP 3562
DI 10.1063/1.1788875
PN 2
PG 4
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900053
ER
PT J
AU Baeumel, S
Werner, A
Semler, R
Mukherjee, S
Darrow, DS
Ellis, R
Cecil, FE
Pedrick, L
Altmann, H
Kiptily, V
Gafert, J
AF Baeumel, S
Werner, A
Semler, R
Mukherjee, S
Darrow, DS
Ellis, R
Cecil, FE
Pedrick, L
Altmann, H
Kiptily, V
Gafert, J
CA JET-EFDA
TI Scintillator probe for lost alpha measurements in JET
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID FUSION PRODUCTS; COLLECTOR; TFTR
AB Good confinement of alpha particles in a large magnetic fusion device is a precondition for building a magnetic fusion reactor. The direct measurement of alpha particle losses is of particular interest. Appropriate diagnostics are now being prepared for the Joint European Torus tokamak: a scintillator probe and a set of Faraday cups. Both systems are capable of measuring charged fusion products and ion cyclotron resonance heating tail ions. The design of the lost alpha particle scintillator probe is in the scope of this article. It will allow the detection of particles with a gyroradius between 20 and 140 mm (15% resolution) and a pitch angle between 30degrees and 86degrees (5% resolution). As scintillating material P56 will be used. The light emitted by the scintillator caused by charged particles that pass the collimator and hit the scintillator will be detected via a set of optical lenses and a coherent image fiber bundle with a charge coupled device camera and a photomultiplier array. In the following the present design of the scintillator probe with emphasis on the performance of the system, structural resistance against plasma disruptions, and the requirements on the heat protection against plasma and neutral beam induced thermal loads will be described. (C) 2004 American Institute of Physics.
C1 EURATOM, Max Planck Inst Plasmaphys, D-17491 Greifswald, Germany.
Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
Colorado Sch Mines, Golden, CO 80401 USA.
Culham Sci Ctr, EFDA JET, Abingdon OX14 3DB, Oxon, England.
RP Baeumel, S (reprint author), EURATOM, Max Planck Inst Plasmaphys, Wendelsteinstr 1, D-17491 Greifswald, Germany.
NR 9
TC 27
Z9 29
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 3563
EP 3565
DI 10.1063/1.1787916
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900054
ER
PT J
AU Darrow, DS
Baumel, S
Cecil, FE
Kiptily, V
Ellis, R
Pedrick, L
Werner, A
AF Darrow, DS
Baumel, S
Cecil, FE
Kiptily, V
Ellis, R
Pedrick, L
Werner, A
TI Design and construction of a fast ion loss Faraday cup array diagnostic
for Joint European Torus
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID COLLECTOR
AB A thin foil Faraday cup array is being built to measure the loss of 3.5 MeV alpha particles and MeV ion cyclotron heating tail ions on Joint European Torus. It will consist of nine detectors spread over five different poloidal locations and three radial positions. They will measure the poloidal distribution and radial scrape off of the losses. The detectors will be comprised of four layers of thin (2.5 mum) Ni foil, giving some resolution of the lost particle energy distribution as different ranges of energies will stop in different layers of the detector. One detector will utilize eight thinner (1.0 mum) foils to obtain a better-resolved energy distribution. These detectors will accept particles incident up to 45degrees from the normal to the foils. (C) 2004 American Institute of Physics.
C1 Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
Max Planck Inst Plasma Phys, D-17491 Greifswald, Germany.
Colorado Sch Mines, Golden, CO 80401 USA.
UKAEA, Culham Lab, Abingdon OX14 3DB, Oxon, England.
RP Darrow, DS (reprint author), Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
EM ddarrow@ppl.gov
NR 6
TC 18
Z9 18
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 3566
EP 3568
DI 10.1063/1.1788876
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900055
ER
PT J
AU Cecil, FE
Darrow, DS
Budny, RV
AF Cecil, FE
Darrow, DS
Budny, RV
TI Preliminary calculations of expected signal levels of a thin Faraday
foil lost alpha particle diagnostic for International Thermonuclear
Experimental Reactor
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID COLLECTOR
AB Thin Faraday collectors are being considered as a diagnostic of lost alpha particles on International Thermonuclear Experimental Reactor (ITER). In an effort to evaluate the viability of this diagnostic, we are undertaking a series of calculations of the signal levels (A/cm(2)) for such devices. Preliminary results assuming a model high yield ITER plasma have been obtained for locations near the outer wall assuming a toroidally symmetric vacuum vessel. We find signal levels to be a strong function of foil location and orientation. Specifically the signal level will be optimized at a vertical location 0.5 m above the machine midplane and with the normal to the foil directed in the lower, radially outward, toroidally counterclockwise octant. A foil thus oriented at a radial distance of 15 cm from the vessel wall at a height of 0.583 m above the machine midplane will have an efficiency of 3.5x10(-8)/cm(2) for alpha particles which undergo classic loss during the first ten revolutions around the torus during this model plasma. For the assumed D-T fusion power of this model plasma of 410 MW, this calculated efficiency will correspond to a measured current in the Faraday foil of 1.7 muA/cm(2). Future, more realistic calculations must incorporate the effects of an asymmetrical vessel and of toroidal field ripple. (C) 2004 American Institute of Physics.
C1 Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA.
Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Cecil, FE (reprint author), Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA.
EM fcecil@mines.edu
NR 9
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 3569
EP 3571
DI 10.1063/1.1785279
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900056
ER
PT J
AU Grim, GP
Morgan, GL
Wilke, MD
Gobby, PL
Christensen, CR
Wilson, DC
AF Grim, GP
Morgan, GL
Wilke, MD
Gobby, PL
Christensen, CR
Wilson, DC
TI Progress on neutron pinhole imaging for inertial confinement fusion
experiments
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID TARGETS
AB Neutron imaging provides a powerful diagnostic for understanding the performance of inertial confinement fusion ignition capsules and the drive mechanism imploding them. To achieve the spatial resolution and fielding capability needed at the National Ignition Facility requires a staged approach that simultaneously pushes the limits of extant capabilities while developing new techniques that will extend to the National Ignition Facility regime. To this end, new pinhole assemblies have been designed and fabricated using very high-precision machining equipment. These assemblies have been fielded successfully at Laboratory for Laser Energetics, University of Rochester and have provided impetus for new aperture designs and new ideas for detectors, which are now the limiting element in the system resolution. (C) 2004 American Institute of Physics.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Grim, GP (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM gpgrim@lanl.gov
NR 6
TC 21
Z9 23
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 3572
EP 3574
DI 10.1063/1.1787917
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900057
ER
PT J
AU Schmid, GJ
Koch, JA
Moran, MJ
Phillips, TW
Glebov, VY
Sangster, TC
Stoeckl, C
Wender, SA
Morse, EC
AF Schmid, GJ
Koch, JA
Moran, MJ
Phillips, TW
Glebov, VY
Sangster, TC
Stoeckl, C
Wender, SA
Morse, EC
TI Calibration of National Ignition Facility neutron detectors in the
energy range E < 14 MeV
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID CVD DIAMOND
AB We examine various options for calibration of the National Ignition Facility neutron detectors in the energy range E<14 MeV. These options include: downscatter of D-T fusion neutrons using plastic targets; nuclear reactions at a Tandem Van de Graaf accelerator; and "white" neutrons from a pulsed spallation source. As an example of the pulsed spallation option, we present calibration data that was recently acquired with a single crystal chemical vapor deposition diamond detector at the Weapons Neutron Research Facility at Los Alamos National Laboratory. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA.
Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Univ Calif Berkeley, Berkeley, CA 94720 USA.
RP Schmid, GJ (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
EM schmid3@llnl.gov
NR 9
TC 3
Z9 3
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 3589
EP 3591
DI 10.1063/1.1779614
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900062
ER
PT J
AU Moran, M
Haan, S
Hatchett, S
Koch, J
Barrera, C
Morse, E
AF Moran, M
Haan, S
Hatchett, S
Koch, J
Barrera, C
Morse, E
TI Downscattered neutron imaging
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID FUSION
AB Images with 14 MeV neutrons of inertial confinement fusion (ICF) D,T fusion show the regions of most intense fusion burn, while images based on lower-energy "downscattered" neutrons can reveal regions of nonburning D,T fuel. The downscattered images can help to understand ICF implosion dynamics. Recording downscattered images is difficult because the images are relatively weak, and because they may be obscured by residual "afterglow" of more intense 14 MeV images. The effect of afterglow can be estimated by adding a sequence of images for neutron energies from 14 MeV down to the downscatteed energy of interest. The images will be subject to decay factors which depend on the time response of the neutron scintillator. Preliminary analyses suggest that afterglow will not prevent the recording of useful downscattered images. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA.
RP Moran, M (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94550 USA.
EM moran3@llnl.gov
NR 4
TC 12
Z9 13
U1 0
U2 2
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 OCT
PY 2004
VL 75
IS 10
BP 3592
EP 3594
DI 10.1063/1.1788854
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900063
ER
PT J
AU Ruggles, LE
Porter, JL
Simpson, WW
Vargas, MF
Zagar, DM
Hartke, R
Buersgens, F
Symes, DR
Ditmire, T
AF Ruggles, LE
Porter, JL
Simpson, WW
Vargas, MF
Zagar, DM
Hartke, R
Buersgens, F
Symes, DR
Ditmire, T
TI High sensitivity neutron detector for Z
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID TIME-OF-FLIGHT; FUSION
AB We have developed, calibrated, and tested a high sensitivity neutron detector that can be operated in the harsh x-ray bremsstrahlung environment that exists in experiments conducted on the 20 MA Z z-pinch facility located at Sandia National Laboratories in Albuquerque, New Mexico. The detector uses a scintillator coupled to a microchannel-plate photomultiplier tube detector and extensive x-ray shielding. (C) 2004 American Institute of Physics.
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
Univ Texas, Austin, TX 78712 USA.
RP Ruggles, LE (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM leruggl@sandia.gov
NR 7
TC 8
Z9 8
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 OCT
PY 2004
VL 75
IS 10
BP 3595
EP 3597
DI 10.1063/1.1789599
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900064
ER
PT J
AU Zweben, SJ
Darrow, DS
Ross, PW
Lowrance, JL
Renda, G
AF Zweben, SJ
Darrow, DS
Ross, PW
Lowrance, JL
Renda, G
TI Measurement of the internal magnetic field of plasmas using an alpha
particle source
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID TOKAMAK
AB The internal magnetic fields of plasmas can be measured under certain conditions from the integrated vxB deflection of MeV alpha particles emitted by a small radioactive source. The alpha source and large-area alpha particle detector would be located inside the vacuum vessel but outside the plasma. Alphas with a typical energy of 5.5 MeV (Am-241) can reach the center of almost all laboratory plasmas and magnetic fusion devices, so this method can potentially determine the q(r) profile of tokamaks or spherical toris (STs). Orbit calculations, background evaluations, and conceptual designs for such alpha vxB (or "AVB") detector are described. (C) 2004 American Institute of Physics.
C1 Princeton Plasma Phys Lab, Princeton, NJ 08540 USA.
Princeton Sci Instruments Inc, Monmouth Jct, NJ 08852 USA.
RP Zweben, SJ (reprint author), Princeton Plasma Phys Lab, Princeton, NJ 08540 USA.
EM szweben@pppl.gov
NR 10
TC 0
Z9 0
U1 1
U2 2
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 OCT
PY 2004
VL 75
IS 10
BP 3610
EP 3612
DI 10.1063/1.1779610
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900069
ER
PT J
AU Medley, SS
Roquemore, AL
AF Medley, SS
Roquemore, AL
TI Neutral particle analyzer diagnostic on the National Spherical Torus
Experiment
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID EXPERIMENT NSTX; LONG-PULSE; HIGH-BETA; PLASMAS; SCENARIOS
AB The neutral particle analyzer (NPA) diagnostic on the National Spherical Torus Experiment (NSTX) utilizes a PPPL-designed EIIB spectrometer that measures the energy spectra of minority hydrogen and bulk deuterium species simultaneously with 39 energy channels per mass specie and a time resolution of 1 ms. The calibrated energy range is E=0.5-150 keV and the energy resolution varies from DeltaE/E=3%-7% over the surface of the microchannel plate detector. The NPA measures Maxwellian spectra of residual hydrogen to obtain ion temperatures and measures the energetic ion spectra produced by injection of up to 100 keV deuterium neutral beams into deuterium plasmas. The NPA views across the coinjection paths of the three neutral beam sources on NSTX which localizes the measured charge exchange effux to the intersection region. The incorporation of horizontal scanning for the NPA over a sightline tangency range of R-tan=125--75 cm has enabled measurement of the anisotropic energy distribution of the beam ions. Vertical scanning allows measurements to be made from the horizontal midplane through an angle of 26degrees downward. A description of the NPA diagnostic on NSTX will be presented along with illustrations of measurement capability. (C) 2004 American Institute of Physics.
C1 Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Medley, SS (reprint author), Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
EM medley@pppl.gov
NR 13
TC 13
Z9 13
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 3625
EP 3627
DI 10.1063/1.1788859
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900074
ER
PT J
AU Shinohara, K
Darrow, DS
Roquemore, AL
Medley, SS
Cecil, FE
AF Shinohara, K
Darrow, DS
Roquemore, AL
Medley, SS
Cecil, FE
TI Solid state neutral particle analyzer array on National Spherical Torus
Experiment
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID CALIBRATION; DETECTOR; TOKAMAK
AB A solid state neutral particle analyzer array has been installed on the National Spherical Torus Experiment (NSTX). The array consists of four chords viewing through a common vacuum flange. The tangency radii of the viewing chords are 60, 90, 100, and 120 cm. They view across the three co-injection neutral beam lines [deuterium, 80 keV (typically) with tangency radii 48.7, 59.2, and 69.4 cm] on NSTX and detect co-going energetic ions. A silicon photodiode was calibrated by using a monoenergetic deuteron beam source. Deuterons with energy above 40 keV can be detected with the present setup. The degradation of the performance was also investigated. Lead shot and epoxy are used for neutron shielding to reduce handling any hazardous heavy metal. This method also enables us to make an arbitrary shape to be fit into the complex flight tube. (C) 2004 American Institute of Physics.
C1 Japan Atom Energy Res Inst, Naka, Ibaraki 3110193, Japan.
Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
Colorado Sch Mines, Golden, CO 80401 USA.
RP Shinohara, K (reprint author), Japan Atom Energy Res Inst, Naka, Ibaraki 3110193, Japan.
NR 9
TC 13
Z9 13
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 OCT
PY 2004
VL 75
IS 10
BP 3640
EP 3642
DI 10.1063/1.1785266
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900079
ER
PT J
AU Nishiura, M
Isobe, M
Saida, T
Sasao, M
Darrow, DS
AF Nishiura, M
Isobe, M
Saida, T
Sasao, M
Darrow, DS
TI Scintillator probe diagnostic for high energy particles escaped from
Large Helical Device
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
AB A scintillator probe for escaping fast ion diagnostics has been developed in the Large Helical Device. This probe is capable of traveling across a divertor leg and sweeping the aperture angle rotationally with respect to the axis of the probe shaft. Pitch angle and gyro radius resolutions are estimated numerically by using a Monte Carlo orbit simulation. The result shows that the detector has sufficient resolution in pitch angle and gyro radius for our target plasmas. Under the neutral beam injected plasma, a signal derived from fast ions was obtained on the scintillator plate and analyzed by using the recorded camera image. (C) 2004 American Institute of Physics.
C1 Natl Inst Nat Sci, Natl Inst Fus Sci, Gifu 5095292, Japan.
Tohoku Univ, Aoba Ku, Sendai, Miyagi 9808579, Japan.
Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Nishiura, M (reprint author), Natl Inst Nat Sci, Natl Inst Fus Sci, 322-6 Oroshi, Gifu 5095292, Japan.
EM nishiura@nifs.ac.jp
NR 4
TC 21
Z9 22
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 OCT
PY 2004
VL 75
IS 10
BP 3646
EP 3648
DI 10.1063/1.1779606
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900081
ER
PT J
AU Hoarty, DJ
Smith, CC
Clark, EL
Foster, JM
Gales, SG
Magelssen, G
Workman, J
Wood, WM
Caldwell, S
Chrien, R
Sandoval, J
Sedillo, T
Walsh, P
Carpenter, B
Compton, S
Perry, T
AF Hoarty, DJ
Smith, CC
Clark, EL
Foster, JM
Gales, SG
Magelssen, G
Workman, J
Wood, WM
Caldwell, S
Chrien, R
Sandoval, J
Sedillo, T
Walsh, P
Carpenter, B
Compton, S
Perry, T
TI Fluorescence spectroscopy as a diagnostic of the radiation environment
in high energy density experiments (invited)
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID IONIZATION; PLASMAS
AB A fluorescence spectroscopy technique has been developed to measure conditions in high energy density (HED) experiments. The experimental technique and modeling of the spectra are described and results of fluorescence measurements are presented. Fluorescence spectra were measured from an aluminium microdot over a small hole in the wall of an experimental package or a hohlraum. The aluminium was photopumped from a broadband radiation source, without perturbing the temperature. To date, fluorescence spectroscopy has been used to diagnose the radiative heating of plasmas in the temperature range 20-80 eV. Fluorescence spectroscopy has several advantages over x-ray absorption and self-emission spectroscopy in the diagnosis of HED experiments and these are discussed in the article. Extension of the technique to higher temperature plasma is discussed. (C) 2004 American Institute of Physics.
C1 AWE Plasma Phys Dept, Reading RG7 4PR, Berks, England.
Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Hoarty, DJ (reprint author), AWE Plasma Phys Dept, Reading RG7 4PR, Berks, England.
EM david.hoarty@awe.co.uk
RI Perry, Theodore/K-3333-2014
OI Perry, Theodore/0000-0002-8832-2033
NR 7
TC 3
Z9 3
U1 0
U2 4
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 OCT
PY 2004
VL 75
IS 10
BP 3655
EP 3659
DI 10.1063/1.1785268
PN 2
PG 5
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900084
ER
PT J
AU Bitter, M
Hill, KW
Stratton, B
Roquemore, AL
Mastrovito, D
Lee, SG
Bak, JG
Moon, MK
Nam, UW
Smith, G
Rice, JE
Beiersdorfer, P
Fraenkel, BS
AF Bitter, M
Hill, KW
Stratton, B
Roquemore, AL
Mastrovito, D
Lee, SG
Bak, JG
Moon, MK
Nam, UW
Smith, G
Rice, JE
Beiersdorfer, P
Fraenkel, BS
TI Spatially resolved spectra from a new x-ray imaging crystal spectrometer
for measurements of ion and electron temperature profiles (invited)
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID SPHERICAL TORUS EXPERIMENT; HIGH-RESOLUTION; LINES
AB A new type of high-resolution x-ray imaging crystal spectrometer is being developed to measure ion and electron temperature profiles in tokamak plasmas. The instrument is particularly valuable for diagnosing plasmas with purely ohmic heating and rf heating, since it does not require the injection of a neutral beam-although it can also be used for the diagnosis of neutral-beam heated plasmas. The spectrometer consists of a spherically bent quartz crystal and a two-dimensional position-sensitive detector. It records spectra of helium-like argon (or krypton) from multiple sightlines through the plasma and projects a de-magnified image of a large plasma cross section onto the detector. The spatial resolution in the plasma is solely determined by the height of the crystal, its radius of curvature, and the Bragg angle. This new x-ray imaging crystal spectrometer may also be of interest for the diagnosis of ion temperature profiles in future large tokamaks, the Korea Superconducting Tokamak Advanced Research tokamak and the International Thermonuclear Experimental Reactor, where the application of the presently used charge-exchange spectroscopy will be difficult, if the neutral beams do not penetrate to the plasma center. The article presents the results from proof-of-principle experiments performed with a prototype instrument at Alcator C-Mod. (C) 2004 American Institute of Physics.
C1 Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA.
Korea Basic Sci Inst, Taejon 305333, South Korea.
Korea Atom Energy Res Inst, Taejon, South Korea.
Korea Astron Observ, Taejon 305348, South Korea.
Brookhaven Natl Lab, Upton, NY 11973 USA.
MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA.
Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Hebrew Univ Jerusalem, Jerusalem, Israel.
RP Princeton Univ, Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
EM bitter@pppl.gov
NR 16
TC 48
Z9 61
U1 1
U2 5
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 OCT
PY 2004
VL 75
IS 10
BP 3660
EP 3665
DI 10.1063/1.1791747
PN 2
PG 6
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900085
ER
PT J
AU Sinars, DB
Bennett, GR
Wenger, DF
Cuneo, ME
Hanson, DL
Porter, JL
Adams, RG
Rambo, PK
Rovang, DC
Smith, IC
AF Sinars, DB
Bennett, GR
Wenger, DF
Cuneo, ME
Hanson, DL
Porter, JL
Adams, RG
Rambo, PK
Rovang, DC
Smith, IC
TI Monochromatic x-ray imaging experiments on the Sandia National
Laboratories Z facility (invited)
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID INERTIAL CONFINEMENT FUSION; MICROSCOPY TECHNIQUES; RADIATION SYMMETRY;
HOHLRAUMS; CRYSTALS
AB The Z facility is a 20 MA, 100 ns rise time, pulsed power driver for z-pinch plasma radiation sources. The Z facility can make >200 TW, 1-2 MJ, near-blackbody radiation sources through the compression of cylindrical wire arrays. These sources are being used as drivers to study inertial-confinement fusion capsule implosions, complex radiation-hydrodynamic jet experiments, and wire-array z-pinch physics tests. To backlight plasmas in this environment we have built diagnostics based on spherically bent crystals that provide high spatial resolution (9-10 mum), a narrow spectral bandpass (<0.5 eV), and a large field of view (4 mmx20 mm). These diagnostics use the 2 TW, multi-kJ Z-Beamlet laser to produce x-ray emission sources at 1.865 or 6.151 keV for backlighting. (C) 2004 American Institute of Physics.
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM dbsinar@sandia.gov
NR 21
TC 65
Z9 79
U1 0
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 OCT
PY 2004
VL 75
IS 10
BP 3672
EP 3677
DI 10.1063/1.1779607
PN 2
PG 6
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900087
ER
PT J
AU Chen, H
Beiersdorfer, P
Baronova, EO
Kalashnikova, II
Stepanenko, MM
AF Chen, H
Beiersdorfer, P
Baronova, EO
Kalashnikova, II
Stepanenko, MM
TI Testing LaMgAl11O19 crystal for x-ray spectroscopy
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID BEAM ION-TRAP; SPECTROMETER
AB We investigated the properties of the rare earth crystal LaMgAl11O19 and its application to soft x-ray spectroscopy. Its relative reflectivity and half-width rocking curve were measured to up to the reflection order of 28. In addition, a comparative measurement of the iron L-shell soft x-ray line emission was made on the EBIT-I Livermore electron beam ion trap by fielding the LaMgAl11O19 crystal side by side with a rubidium hydrogen phthalate crystal in a flat crystal spectrometer. From these measurements, reflectivity and spectral resolving power were determined. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RRC Kurchatov Inst, Moscow, Russia.
RP Chen, H (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
EM chen33@llnl.gov
NR 9
TC 1
Z9 1
U1 1
U2 2
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 OCT
PY 2004
VL 75
IS 10
BP 3678
EP 3680
DI 10.1063/1.1785269
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900088
ER
PT J
AU Nash, TJ
Sanford, TWL
Leeper, RJ
Chandler, GA
Bailey, JE
Mehlhorn, TA
Deeney, CD
Seaman, JF
McGurn, J
Torres, JA
Jobe, DO
Mock, RC
Gilliland, T
Nielsen, DS
Lucas, J
Moore, T
AF Nash, TJ
Sanford, TWL
Leeper, RJ
Chandler, GA
Bailey, JE
Mehlhorn, TA
Deeney, CD
Seaman, JF
McGurn, J
Torres, JA
Jobe, DO
Mock, RC
Gilliland, T
Nielsen, DS
Lucas, J
Moore, T
TI Bottom axial diagnostic package on Z
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID POWER
AB A bottom axial diagnostic package has recently been developed and fielded on the 100 ns, 20 MA pinch-driver Z. The bottom package was developed to measure the power radiated to the bottom of Z and compare it to the power radiated to the top of Z on dynamic hohlraum pinch loads. When an up/down power asymmetry was measured, the bottom package was expanded in an effort to determine the source of the asymmetry. The bottom package contains one port directly on axis, six ports at 3.4degrees to the axis, and four ports at 9degrees to the axis. Typical diagnostics fielded on the bottom package are a time-resolved pinhole camera, time-integrated spatially resolved convex crystal spectrometers, a time-resolved crystal spectrometer, x-ray diodes, bolometers, and photoconducting detectors. We will present some typical data from these bottom diagnostics on dynamic hohlraum shots on Z and briefly discuss their relevance to the up/down power asymmetry. (C) 2004 American Institute of Physics.
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Nash, TJ (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM tjnash@sandia.gov
NR 12
TC 3
Z9 4
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 OCT
PY 2004
VL 75
IS 10
BP 3684
EP 3686
DI 10.1063/1.1779608
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900090
ER
PT J
AU Dunham, G
Rochau, GA
Lake, P
Nielsen-Weber, L
Schuster, D
AF Dunham, G
Rochau, GA
Lake, P
Nielsen-Weber, L
Schuster, D
TI Measurements of the counting statistics on RAR-2497 and DEF x-ray film
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID PHOTOGRAPHIC FILMS; MODELS
AB X-ray film is commonly used to diagnose high temperature plasmas. Quantitative analysis of the recorded film exposure requires knowledge of the counting statistics inherent to each particular film type. To address this issue, RAR-2497 and DEF film were exposed on a Manson x-ray source for multiple fluence values and photon energies. The fluctuations in the measured intensity were found by determining the statistical distribution of the recorded photon intensity using Henke's calibration tables to relate the net film density to the incident intensity. The resulting measurements of the statistical fluctuations in photon intensity are presented for each film type. (C) 2004 American Institute of Physics.
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Dunham, G (reprint author), Ktech Corp Inc, 1300 Eubank Blvd SE, Albuquerque, NM 87123 USA.
EM gsdunha@sandia.gov
NR 6
TC 6
Z9 6
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 OCT
PY 2004
VL 75
IS 10
BP 3687
EP 3689
DI 10.1063/1.1788865
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900091
ER
PT J
AU Lake, PW
Bailey, JE
Rochau, GA
Moore, TC
Petmecky, D
Gard, P
AF Lake, PW
Bailey, JE
Rochau, GA
Moore, TC
Petmecky, D
Gard, P
TI Time- and space-resolved elliptical crystal spectrometers for high
energy density physics research
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID X-RAY SPECTROSCOPY; DRIVEN IMPLOSIONS; REGION; SHELL
AB X-ray spectrometers used in high energy density plasma experiments must provide high time, space, and spectral resolution while overcoming the difficulties imposed by x-ray background, debris, and mechanical shocks. At the Z facility these problems are addressed using a suite of elliptical crystal spectrometers. The elliptical geometry isolates the detector from the line of sight with a slit placed at the elliptical focus, while the sensitivity enables locating the crystal 2-4 m from the plasma source. Space and time resolution are obtained by using an array of slits to project one dimensional plasma images onto the crystal and recording the spectrally dispersed images with a gated microchannel plate detector. (C) 2004 American Institute of Physics.
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
K Tech Corp, Albuquerque, NM 87185 USA.
TMI Inc, Albuquerque, NM 87185 USA.
RP Lake, PW (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM jebaile@sandia.gov
NR 13
TC 25
Z9 25
U1 1
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 3690
EP 3692
DI 10.1063/1.1788866
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900092
ER
PT J
AU Lee, SG
Bak, JG
Bitter, M
Hill, K
Nam, UW
Kim, YJ
Moon, MK
AF Lee, SG
Bak, JG
Bitter, M
Hill, K
Nam, UW
Kim, YJ
Moon, MK
TI Research and development of x-ray imaging crystal spectrometers for
KSTAR
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
AB The engineering design for two high-resolution x-ray imaging crystal spectrometers for KSTAR tokamak has been completed. A spherically bent quartz crystal and a large area two-dimensional (2D) position-sensitive multiwire proportional counter have been selected for the imaging spectrometers. A prototype 10 cm by 30 cm 2D detector was fabricated and pilot measurement on Alcator C-Mod tokamak was carried out. The final engineering design of the spectrometers and experimental results from the 2D detector are presented. (C) 2004 American Institute of Physics.
C1 Korea Basic Sci Inst, Taejon 305333, South Korea.
Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
Korea Astron Observ, Taejon 305333, South Korea.
Korea Atom Energy Res Inst, Taejon 305333, South Korea.
RP Lee, SG (reprint author), Korea Basic Sci Inst, Taejon 305333, South Korea.
EM sglee@kbsi.re.kr
NR 3
TC 19
Z9 20
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 3693
EP 3695
DI 10.1063/1.1785270
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900093
ER
PT J
AU Chandler, KM
Shlyaptseva, AS
Ouart, ND
Hansen, SB
Mitchell, MD
Pikuz, SA
Shelkovenko, TA
Hammer, DA
Kantsyrev, VL
Fedin, DA
AF Chandler, KM
Shlyaptseva, AS
Ouart, ND
Hansen, SB
Mitchell, MD
Pikuz, SA
Shelkovenko, TA
Hammer, DA
Kantsyrev, VL
Fedin, DA
TI Spectroscopic analysis of x-ray bursts from nichrome and conichrome
X-pinch plasmas
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
AB Radiative properties of plasmas from X pinches with nichrome and conichrome wires have been studied using the presented diagnostic arrangement. The experimental results have been produced at the Cornell XP facility with a peak current of 450 kA and a full width at half maximum pulse duration of 100 ns. The spatially resolved, time-integrated x-ray line spectra from the region of the X-pinch cross point have been recorded using different crystal spectrometers. In particular, K-shell and L-shell x-ray spectra of Ni and Cr have been recorded through different filters in the same pulses for X pinches from two different wire alloys. A nonlocal thermodynamic equilibrium collisional-radiative atomic kinetic model of Ni has been developed to identify the useful diagnostic spectroscopic features and to model experimental spectra. The results of the modeling and radiative properties of different materials from nichrome and conichrome alloys are compared and discussed. (C) 2004 American Institute of Physics.
C1 Cornell Univ, Plasma Studies Lab, Ithaca, NY 14853 USA.
Univ Nevada, Dept Phys, Reno, NV 89557 USA.
Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
PN Lebedev Phys Inst, Moscow 119991, Russia.
RP Chandler, KM (reprint author), Cornell Univ, Plasma Studies Lab, 369 Upson Hall, Ithaca, NY 14853 USA.
EM alla@physics.unr.edu
RI Pikuz, Sergey/M-8231-2015; Shelkovenko, Tatiana/M-8254-2015
NR 8
TC 7
Z9 7
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 3702
EP 3704
DI 10.1063/1.1785272
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900096
ER
PT J
AU Stoeckl, C
Theobald, W
Sangster, TC
Key, MH
Patel, P
Zhang, BB
Clarke, R
Karsch, S
Norreys, P
AF Stoeckl, C
Theobald, W
Sangster, TC
Key, MH
Patel, P
Zhang, BB
Clarke, R
Karsch, S
Norreys, P
TI Operation of a single-photon-counting x-ray charge-coupled device camera
spectrometer in a petawatt environment
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID ASTRO-E; CCD
AB The use of a single-photon-counting x-ray charge-coupled device (CCD) camera as an x-ray spectrometer is a well-established technique in ultrashort-pulse laser experiments. In single-photon-counting mode, the pixel value of each readout pixel is proportional to the energy deposited from the incident x-ray photon. For photons below 100 keV, a significant fraction of the events deposits all the energy in a single pixel. A histogram of the pixel readout values gives a good approximation of the x-ray spectrum. This technique requires almost no alignment, but it is very sensitive to signal-to-background issues, especially in a high-energy petawatt environment. Shielding the direct line of sight to the target was not sufficient to obtain a high-quality spectrum, for the experiments reported here the CCD camera had to be shielded from all sides with up to 10 cm of lead. (C) 2004 American Institute of Physics.
C1 Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA.
Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
RP Stoeckl, C (reprint author), Univ Rochester, Laser Energet Lab, 250 E River Rd, Rochester, NY 14623 USA.
EM csto@lle.rochester.edu
RI Patel, Pravesh/E-1400-2011
NR 7
TC 35
Z9 37
U1 1
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 3705
EP 3707
DI 10.1063/1.1788867
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900097
ER
PT J
AU Robbins, DL
Chen, H
Beiersdorfer, P
Faenov, AY
Pikuz, TA
May, MJ
Dunn, J
Smith, AJ
AF Robbins, DL
Chen, H
Beiersdorfer, P
Faenov, AY
Pikuz, TA
May, MJ
Dunn, J
Smith, AJ
TI High-resolution compact Johann crystal spectrometer with the Livermore
electron beam ion trap
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID X-RAY SPECTROMETER; LABORATORY MEASUREMENTS; POLARIZATION; EMISSION;
LINE; BREMSSTRAHLUNG
AB A compact high-resolution (lambda/Deltalambdaapproximate to10 000) spherically bent crystal spectrometer in the Johann geometry was recently installed and tested on the Lawrence Livermore National Laboratory SuperEBIT electron beam ion trap. The curvature of the mica (002) crystal grating allows for higher collection efficiency compared to the flat and cylindrically bent crystal spectrometers commonly used on the Livermore electron beam ion traps. The spectrometer's Johann configuration enables orientation of its dispersion plane to be parallel to the electron beam propagation. Used in concert with a crystal spectrometer, whose dispersion plane is perpendicular to the electron beam propagation, the polarization of x-ray emission lines can be measured. (C) 2004 American Institute of Physics.
C1 Morehouse Coll, Dept Phys, Atlanta, GA 30314 USA.
Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
VNIIFTRI, Multicharged Ions Spectra Data Ctr, Mendeleyevsk 141570, Moscow Region, Russia.
RP Robbins, DL (reprint author), Morehouse Coll, Dept Phys, Atlanta, GA 30314 USA.
NR 18
TC 9
Z9 9
U1 0
U2 2
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 OCT
PY 2004
VL 75
IS 10
BP 3717
EP 3719
DI 10.1063/1.1781753
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900101
ER
PT J
AU Beiersdorfer, P
Brown, GV
Goddard, R
Wargelin, BJ
AF Beiersdorfer, P
Brown, GV
Goddard, R
Wargelin, BJ
TI High-resolution crystal spectrometer for the 10-60 angstrom extreme
ultraviolet region
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID ELECTRON-BEAM ION; X-RAY SPECTROMETER; TRAP; SPECTROSCOPY; EBIT
AB A vacuum crystal spectrometer with nominal resolving power approaching 1000 is described for measuring emission lines with wavelength in the extreme ultraviolet region up to 60 Angstrom. The instrument utilizes a flat octadecyl hydrogen maleate crystal and a thin-window 1D position-sensitive gas proportional detector. This detector employs a 1-mum-thick 100x8 mm(2) aluminized polyimide window and operates at one atmosphere pressure. The spectrometer has been implemented on the Livermore electron beam ion traps. The performance of the instrument is illustrated in measurements of the newly discovered magnetic field-sensitive line in Ar8+. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Univ Maryland, College Pk, MD 20742 USA.
Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA.
RP Beiersdorfer, P (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
NR 19
TC 14
Z9 14
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 3720
EP 3722
DI 10.1063/1.1781754
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900102
ER
PT J
AU Beiersdorfer, P
Magee, EW
Trabert, E
Chen, H
Lepson, JK
Gu, MF
Schmidt, M
AF Beiersdorfer, P
Magee, EW
Trabert, E
Chen, H
Lepson, JK
Gu, MF
Schmidt, M
TI Flat-field grating spectrometer for high-resolution soft x-ray and
extreme ultraviolet measurements on an electron beam ion trap
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID CHARGED IONS; XMM-NEWTON; SPECTROSCOPY; CHANDRA; LINES; POLARIZATION;
EMISSION; SPECTRA; HR-1099; REGION
AB A R=44.3 m grazing-incidence grating spectrometer has been implemented on the Livermore electron beam ion traps for high-resolution measurements in the soft x-ray and extreme ultraviolet region spanning from below 10 up to 50 Angstrom. The instrument uses a grating with variable line spacing (about 2400 l/mm for a flat field of view. Spectra are recorded with a back-illuminated charge-coupled device detector. The new instrument greatly improves upon the resolution achieved with existing grating spectrometers and complements crystal spectrometers at the shorter wavelengths both in terms of wavelength coverage and polarization independent reflectivity response. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Univ Calif Berkeley, Berkeley, CA 94720 USA.
Stanford Univ, Palo Alto, CA 94305 USA.
Tech Univ Dresden, D-8027 Dresden, Germany.
RP Beiersdorfer, P (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
EM beiersdorfer@llnl.gov
NR 30
TC 60
Z9 60
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 3723
EP 3726
DI 10.1063/1.1779609
PN 2
PG 4
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900103
ER
PT J
AU May, M
Heeter, R
Emig, J
AF May, M
Heeter, R
Emig, J
TI Convex crystal x-ray spectrometer for laser plasma experiments
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
AB Measuring time and space-resolved spectra is important for understanding Hohlraum and Halfraum plasmas. Experiments at the OMEGA laser have used the Nova TSPEC which was not optimized for the OMEGA diagnostic space envelope or for the needed spectroscopic coverage and resolution. An improved multipurpose spectrometer snout, the MSPEC, has been constructed and fielded on OMEGA. The MSPEC provides the maximal internal volume for mounting crystals without any beam interferences at either 2x or 3x magnification. The RAP crystal is in a convex mounting geometry bent to a 20 cm radius of curvature. The spectral resolution, E/dE, is about 200 at 2.5 keV. The spectral coverage is 2 to 4.5 keV. The MSPEC can record four separate spectra on the framing camera at time intervals of up to several ns. The spectrometer design and initial field-test performance will be presented and compared to that of the TSPEC. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
EM may13@llnl.gov
NR 11
TC 10
Z9 11
U1 0
U2 0
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 OCT
PY 2004
VL 75
IS 10
BP 3740
EP 3742
DI 10.1063/1.1781374
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900108
ER
PT J
AU Pak, A
Gregori, G
Knight, J
Campbell, K
Price, D
Hammel, B
Landen, OL
Glenzer, SH
AF Pak, A
Gregori, G
Knight, J
Campbell, K
Price, D
Hammel, B
Landen, OL
Glenzer, SH
TI X-ray line measurements with high efficiency Bragg crystals
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID SCATTERING
AB We have studied the focusing properties of two highly oriented pyrolitic graphite (HOPG) spectrometers, which differ in the degree of the mosaic spread: ZYA with a low mosaic spread (gamma=0.4degrees) and ZYH with a large mosaic spread (gamma=3.5degrees). In order to asses the crystal performance for a variety of different experiments, various Kalpha and Kbeta x-ray lines have been produced using a high-intensity (greater than or similar to10(17) W/cm(2)) short-pulse (similar to100 fs) laser beam focused onto Ti, V, Zn, and Cu foils. The measured spectral resolution of the HOPG crystals in both first and second order diffraction has been compared with theoretical predictions. Using known values for the peak reflectivity of HOPG crystals, we have also computed Kalpha x-ray conversion efficiencies of Ti, V, Zn, and Cu. These results are important to estimate the optimal conditions under which different types of HOPG monochromators can be used for the detection of weak x-ray signals as the one encountered in x-ray Thomson/Compton scattering experiments. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Pak, A (reprint author), Lawrence Livermore Natl Lab, POB 5508, Livermore, CA 94551 USA.
EM gregori1@llnl.gov
NR 10
TC 65
Z9 65
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 3747
EP 3749
DI 10.1063/1.1788870
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900110
ER
PT J
AU Shlyaptseva, A
Fedin, D
Hamasha, S
Harris, C
Kantsyrev, V
Neill, P
Ouart, N
Safronova, UI
Beiersdorfer, P
Boyce, K
Brown, GV
Kelley, R
Kilbourne, CA
Porter, FS
AF Shlyaptseva, A
Fedin, D
Hamasha, S
Harris, C
Kantsyrev, V
Neill, P
Ouart, N
Safronova, UI
Beiersdorfer, P
Boyce, K
Brown, GV
Kelley, R
Kilbourne, CA
Porter, FS
TI Development of M-shell x-ray spectroscopy and spectropolarimetry of
z-pinch tungsten plasmas
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID ELECTRON-BEAM; IONS
AB The development of spectroscopic modeling of M-shell tungsten z-pinch plasma is presented. The spectral region from 3.5 to 6.5 Angstrom includes three distinct groups of transitions, and the best candidates for M-shell diagnostics are identified. Theoretical modeling is benchmarked with LLNL electron beam ion trap data produced at different energies of the electron beam and recorded by crystal spectrometers and a broadband microcalorimeter. A new high temperature plasma diagnostic tool, x-ray spectropolarimetry, is proposed to study polarization of W line emission and is illustrated using the results of x-pinch polarization-sensitive experiments. The x-ray line polarization of the prominent M-shell tungsten lines is calculated, and polarization markers are identified. The advantage of using x-pinch W wire experiments for the development of M-shell diagnostics is shown. (C) 2004 American Institute of Physics.
C1 Univ Nevada, Reno, NV 89557 USA.
Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
NASA, Goddard Space Flight Ctr, Greenbelt, MD 20770 USA.
RP Shlyaptseva, A (reprint author), Univ Nevada, Reno, NV 89557 USA.
RI Porter, Frederick/D-3501-2012; Kelley, Richard/K-4474-2012
OI Porter, Frederick/0000-0002-6374-1119;
NR 8
TC 12
Z9 12
U1 0
U2 2
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 OCT
PY 2004
VL 75
IS 10
BP 3750
EP 3752
DI 10.1063/1.1781757
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900111
ER
PT J
AU McDonald, JW
Kauffman, RL
Celeste, JR
Rhodes, MA
Lee, FD
Suter, LJ
Lee, AP
Foster, JM
Slark, G
AF McDonald, JW
Kauffman, RL
Celeste, JR
Rhodes, MA
Lee, FD
Suter, LJ
Lee, AP
Foster, JM
Slark, G
TI Filter-fluorescer diagnostic system for the National Ignition Facility
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
AB An early filter-fluorescer diagnostic system is being fielded at the National Ignition Facility (NIF) at Lawrence Livermore National Laboratory (LLNL) to measure the amount of hard x rays (20200 TW,2 MJ, x-ray pulses. The streak camera is used to measure with one dimension of spatial resolution the continuous time history of sub-kilo-electron-volts emission from z-pinch and radiation flow experiments. Radiation >1 keV is eliminated by the use of a grazing-incidence mirror and transmission filters. The diagnostic has a magnification of 1.22, a 20 mm field-of-view and a spatial resolution of similar to350 mum. The recording length of the instrument is variable in duration up to a maximum of 33 ns, making it well suited for the typical 100 ns Z pinch implosion times. The spatial resolution can readily be changed to be along either the axial or the radial direction. (C) 2004 American Institute of Physics.
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Wenger, DF (reprint author), Sandia Natl Labs, POB 5800,MS 1193, Albuquerque, NM 87185 USA.
EM dfwenge@sandia.gov
NR 11
TC 8
Z9 12
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 3983
EP 3985
DI 10.1063/1.1787933
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900180
ER
PT J
AU Montgomery, DS
Nobile, A
Walsh, PJ
AF Montgomery, DS
Nobile, A
Walsh, PJ
TI Characterization of National Ignitition Facility cryogenic beryllium
capsules using x-ray phase contrast imaging
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
AB Beryllium capsules filled with cryogenic deuterium and tritium fuel layers may provide many advantages for obtaining ignition at the National Ignition Facility. However, characterizing the uniformity and thickness of the frozen fuel layer in such a target is challenging since traditional x-ray radiography techniques, which rely on absorption for image contrast, cannot provide sufficient contrast to image the fuel layer in these low-Z materials. We propose using x-ray phase contrast imaging, which relies on gradients in the refractive index and wave interference, to characterize fuel layer uniformity. We present numerical modeling results of x-ray phase contrast imaging demonstrating the feasibility of this method for target characterization, discuss the necessary x-ray source characteristics, and present concepts for using this technique in the context of dynamic high density plasma experiments. (C) 2004 American Institute of Physics.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Montgomery, DS (reprint author), Los Alamos Natl Lab, POB 1663,MS E526, Los Alamos, NM 87545 USA.
EM montgomery@lanl.gov
NR 7
TC 46
Z9 51
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 3986
EP 3988
DI 10.1063/1.1790054
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900181
ER
PT J
AU Blue, BE
Hansen, JF
Robey, HF
AF Blue, BE
Hansen, JF
Robey, HF
TI Improved pinhole-apertured point-projection backlighter geometry
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
AB Pinhole-apertured point-projection x-ray radiography is an important diagnostic technique for obtaining high resolution, high contrast, and large field-of-view images used to diagnose the hydrodynamic evolution of high energy density experiments. In this technique, a pinhole aperture is placed between a laser irradiated foil (x-ray source) and an imaging detector. Future high energy density experiments that utilize more opaque materials will require backlighters with improved contrast as compared to what is currently used. In this article, we present an improved backlighter geometry that utilizes a tilted pinhole for debris mitigation and a front-side illuminated backlighter foil for improved photon statistics. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Blue, BE (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA.
EM blue3@llnl.gov
NR 7
TC 6
Z9 7
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 3989
EP 3991
DI 10.1063/1.1787936
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900182
ER
PT J
AU Lowry, ME
Bennett, CV
Vernon, SP
Stewart, R
Welty, RJ
Heebner, J
Landen, OL
Bell, PM
AF Lowry, ME
Bennett, CV
Vernon, SP
Stewart, R
Welty, RJ
Heebner, J
Landen, OL
Bell, PM
TI X-ray detection by direct modulation of an optical probe beam -
Radsensor: Progress on development for imaging applications
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID MULTIPLE-QUANTUM WELLS; GAAS
AB We present a progress report on our new x-ray detection technique based on optical measurement of the effects of x-ray absorption and electron hole pair creation in a direct band-gap semiconductor. The electron-hole pairs create a frequency dependent shift in optical refractive index and absorption. This is sensed by simultaneously directing an optical probe beam through the same volume of semiconducting medium that has experienced an x-ray induced modulation in the electron-hole population. If the wavelength of the optical probe beam is close to the semiconductor band-edge, the optical probe will be modulated significantly in phase and amplitude. We have analyzed the physics of the imaging radsensor, developed modeling tools for device design, and are cautiously optimistic that we will achieve single x-ray photon sensitivity, and picosecond response. These predictions will be tested with Cu Kalpha xrays at the LLNL USP facility this spring and summer, with a cavity-based radsensor detector suitable for use in x-ray imagers. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Lowry, ME (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA.
EM Lowry3@llnl.gov
RI Heebner, John/C-2411-2009; Bennett, Corey/C-2403-2009
OI Bennett, Corey/0000-0003-4365-5739
NR 7
TC 8
Z9 10
U1 0
U2 4
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 OCT
PY 2004
VL 75
IS 10
BP 3995
EP 3997
DI 10.1063/1.1790055
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900184
ER
PT J
AU Delgado-Aparicio, LF
Stutman, D
Tritz, K
Finkenthal, M
Kaita, R
Roquemore, L
Johnson, D
Majeski, R
AF Delgado-Aparicio, LF
Stutman, D
Tritz, K
Finkenthal, M
Kaita, R
Roquemore, L
Johnson, D
Majeski, R
TI "Optical" soft x-ray arrays for fluctuation diagnostics in magnetic
fusion energy experiments
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID SPHERICAL TORUS
AB We are developing large pixel count, fast (greater than or equal to100 kHz) and continuously sampling soft x-ray (SXR) array for the diagnosis of magnetohydrodynamics (MHD) and turbulent fluctuations in magnetic fusion energy plasmas. The arrays are based on efficient scintillators, high thoughput multiclad fiber optics, and multichannel light amplification and integration. Compared to conventional x-ray diode arrays, such systems can provide vastly increased spatial coverage, and access to difficult locations with small neutron noise and damage. An eight-channel array has been built using columnar CsI:Tl as an SXR converter and a multianode photomultiplier tube as photoamplifier. The overall system efficiency is measured using laboratory SXR sources, while the time response and signal-to-noise performance have been evaluated by recording MHD activity from the spherical tori (ST) Current Drive Experiment-Upgrade and National Spherical Torus Experiment, both at Princeton Plasma Physics Laboratory. (C) 2004 American Institute of Physics.
C1 Johns Hopkins Univ, Dept Phys & Astron, Plasma Spect Grp, Bloomberg Ctr, Baltimore, MD 21218 USA.
Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Delgado-Aparicio, LF (reprint author), Johns Hopkins Univ, Dept Phys & Astron, Plasma Spect Grp, Bloomberg Ctr, 3400 N Charles St, Baltimore, MD 21218 USA.
EM delgapa@pha.jhu.edu
RI Stutman, Dan/P-4048-2015
NR 6
TC 14
Z9 14
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 4020
EP 4022
DI 10.1063/1.1787902
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900192
ER
PT J
AU Failor, BH
Qi, N
Levine, JS
Sze, H
Gullickson, EM
AF Failor, BH
Qi, N
Levine, JS
Sze, H
Gullickson, EM
TI Soft x-ray (0.2 < E < 2.0 keV) imager for z-pinch plasma radiation
sources
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID GAS DISTRIBUTIONS; INTERFEROMETER; SPECTROMETER; NOZZLES
AB Z-pinches can produce intense fluxes of argon K-shell (3 keV) radiation, but typically only a fraction of the load mass near the axis of the pinch radiates in this spectral range. The majority of the mass does not get hot or dense enough to radiate efficiently in the K-shell. We have designed, built, and tested an instrument to image pinch emission, specifically the radial emission profile, at energies below the K-shell in order to track the location of the cooler mass. A gold mirror provides a high-energy cut-off at 2 keV while a transmission grating disperses the incoming radiation and provides a low-energy cutoff at 0.1 keV. A vertical slit images the pinch radiation in the radial direction and the emission profile is recorded with either an extreme ultraviolet-sensitive charge-coupled device camera (time-integrated) or a linear photodiode array (similar to1 ns time resolution). We present results for the mirror, grating, and system characterization obtained at the Advanced Light Source synchrotron located at Lawrence Berkeley National Laboratory (Berkeley, CA). (C) 2004 American Institute of Physics.
C1 Titan Corp, Pulse Sci Div, San Leandro, CA 94577 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
RP Failor, BH (reprint author), Titan Corp, Pulse Sci Div, 2700 Merced St, San Leandro, CA 94577 USA.
EM bfailor@titan.com
NR 11
TC 6
Z9 8
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 4026
EP 4028
DI 10.1063/1.1787903
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900194
ER
PT J
AU Jones, B
Deeney, C
Pirela, A
Meyer, C
Petmecky, D
Gard, P
Clark, R
Davis, J
AF Jones, B
Deeney, C
Pirela, A
Meyer, C
Petmecky, D
Gard, P
Clark, R
Davis, J
TI Design of a multilayer mirror monochromatic x-ray imager for the Z
accelerator
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID PLASMAS
AB A time-resolved pinhole camera is being developed for monochromatic soft x-ray imaging of z-pinch plasmas on the Z accelerator [R. B. Spielman , Phys. Plasmas 5, 2105 (1998)] at Sandia National Laboratories. Pinhole images will reflect from a planar multilayer mirror onto a microchannel plate detector. A W/Si or Cr/C multilayer reflects a narrow energy range (full width at half maximum <10 eV) centered at 277 eV with peak reflectivity up to 20%. This choice of energy will allow final implosion imaging of any wire-array z-pinch fielded on Z, as well as bench testing using a carbon Kalpha source. Aluminized parylene filters will eliminate optical and second harmonic reflection, and the 34degrees multilayer grazing angle will allow detector shielding from high energy x rays produced by the Z accelerator. The system will also include a standard in-line pinhole camera, which can be filtered to obtain simultaneous higher-photon-energy images. Future instruments could use multiple mirrors to image at several energies, or operate at a low grazing angle to image 1-10 keV K-shell emission. (C) 2004 American Institute of Physics.
C1 Sandia Natl Labs, Albuquerque, NM 87123 USA.
Ktech Corp Inc, Albuquerque, NM 87123 USA.
TMI, Albuquerque, NM 87123 USA.
USN, Res Lab, Washington, DC 20375 USA.
RP Jones, B (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87123 USA.
EM bmjones@sandia.gov
NR 13
TC 11
Z9 11
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 4029
EP 4032
DI 10.1063/1.1789257
PN 2
PG 4
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900195
ER
PT J
AU Tritz, K
Stutman, D
Delgado-Aparicio, LF
Finkenthal, M
Pacella, D
Kaita, R
Stratton, B
Sabbagh, S
AF Tritz, K
Stutman, D
Delgado-Aparicio, LF
Finkenthal, M
Pacella, D
Kaita, R
Stratton, B
Sabbagh, S
TI Current profile reconstruction using electron temperature imaging
diagnostics
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID TOKAMAK
AB Flux surface shape information can be used to constrain the current profile for reconstruction of the plasma equilibrium. One method of inferring flux surface shape relies on plasma x-ray emission; however, deviations from the flux surfaces due to impurity and density asymmetries complicate the interpretation. Electron isotherm surfaces should correspond well to the plasma flux surfaces, and equilibrium constraint modeling using this isotherm information constrains the current profile. The KFIT code is used to assess the profile uncertainty and to optimize the number, location and SNR required for the Te detectors. As Te imaging detectors we consider tangentially viewing, vertically spaced, linear gas electron multiplier arrays operated in pulse height analysis (PHA) mode and multifoil soft x-ray arrays. Isoflux coordinate sets provided by T-e measurements offer a strong constraint on the equilibrium reconstruction in both a stacked horizontal array configuration and a crossed horizontal and vertical beam system, with q(0) determined to within +/-4%. The required SNR can be provided with either PHA or multicolor diagnostic techniques, though the multicolor system requires similar tox4 better statistics for comparable final errors. (C) 2004 American Institute of Physics.
C1 Johns Hopkins Univ, Dept Phys & Astron, Plasma Spect Grp, Bloomberg Ctr, Baltimore, MD 21218 USA.
ENEA, Assoc ENEA EURATOM Fus, Frascati, Italy.
Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA.
Columbia Univ, New York, NY 10027 USA.
RP Tritz, K (reprint author), Johns Hopkins Univ, Dept Phys & Astron, Plasma Spect Grp, Bloomberg Ctr, 3400 N Charles St, Baltimore, MD 21218 USA.
EM ktritz@pppl.gov
RI Sabbagh, Steven/C-7142-2011; Stutman, Dan/P-4048-2015
NR 4
TC 0
Z9 0
U1 0
U2 4
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 OCT
PY 2004
VL 75
IS 10
BP 4033
EP 4036
DI 10.1063/1.1790056
PN 2
PG 4
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900196
ER
PT J
AU Landen, OL
Bell, PM
McDonald, JW
Park, HS
Weber, F
Moody, JD
Lowry, ME
Stewart, RE
AF Landen, OL
Bell, PM
McDonald, JW
Park, HS
Weber, F
Moody, JD
Lowry, ME
Stewart, RE
TI Static and time-resolved 10-1000 keV x-ray imaging detector options for
NIF
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID 1-100-KEV REGION; HIGH-SPEED; SENSITIVITY; CAMERA; MODEL; FILM; CSI
AB High energy (>10 keV) x-ray self-emission imaging and radiography will be essential components of many NIF high energy density physics experiments. In preparation for such experiments, we have evaluated the pros and cons of various static [x-ray film, bare charge-coupled device (CCD), and scintillator + CCD] and time-resolved (streaked and gated) 10-1000 keV detectors. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Landen, OL (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
EM landen1@llnl.gov
NR 23
TC 3
Z9 3
U1 0
U2 2
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 OCT
PY 2004
VL 75
IS 10
BP 4037
EP 4039
DI 10.1063/1.1787904
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900197
ER
PT J
AU Schneider, MB
Sorce, C
Loughman, K
Emig, J
Bruns, C
Back, C
Bell, PM
Compton, S
Hargrove, D
Holder, JP
Landen, OL
Perry, TS
Shepherd, R
Young, BK
AF Schneider, MB
Sorce, C
Loughman, K
Emig, J
Bruns, C
Back, C
Bell, PM
Compton, S
Hargrove, D
Holder, JP
Landen, OL
Perry, TS
Shepherd, R
Young, BK
TI Shielding a streak camera from hard x rays
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
AB The targets used in the hot halfraum campaign at OMEGA create many hot electrons, which result in a large flux of hard x rays. The hard x rays produce a high background in the streak camera. The background was significantly reduced by wrapping the streak camera with a high-Z material; in this case, 1/8 in. of Pb. The large hard x-ray flux also adds noise to images from framing cameras which use charge-coupled devices. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Schneider, MB (reprint author), Lawrence Livermore Natl Lab, POB 808,L-472, Livermore, CA 94550 USA.
EM Schneider5@LLNL.GOV
RI Perry, Theodore/K-3333-2014
OI Perry, Theodore/0000-0002-8832-2033
NR 3
TC 3
Z9 3
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 4040
EP 4041
DI 10.1063/1.1788889
PN 2
PG 2
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900198
ER
PT J
AU Lerche, RA
McDonald, JW
Griffith, RL
de Dios, GV
Andrews, DS
Huey, AW
Bell, PM
Landen, OL
Jaanimagi, PA
Boni, R
AF Lerche, RA
McDonald, JW
Griffith, RL
de Dios, GV
Andrews, DS
Huey, AW
Bell, PM
Landen, OL
Jaanimagi, PA
Boni, R
TI Preliminary performance measurements for a streak camera with a
large-format direct-coupled charge-coupled device readout
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
AB The University of Rochester's Laboratory for Laser Energetics (Rochester, New York) is leading an effort to develop a modern, fully automated streak camera. Characterization of a prototype camera shows spatial resolution better than 20 lp/mm, temporal resolution of 12 ps, line-spread function of 40 mum (full width at half maximum) contrast transfer ratio of 60% at 10 lp/mm, system gain of 101 charge-coupled device electrons per photoelectron, and a dynamic range of 500 for a 2 ns window. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA.
RP Lerche, RA (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA.
EM lerche1@llnl.gov
NR 3
TC 10
Z9 14
U1 0
U2 2
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 OCT
PY 2004
VL 75
IS 10
BP 4042
EP 4044
DI 10.1063/1.1788890
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900199
ER
PT J
AU Marshall, FJ
Oertel, JA
Walsh, PJ
AF Marshall, FJ
Oertel, JA
Walsh, PJ
TI Framed, 16-image, Kirkpatrick-Baez microscope for laser-plasma x-ray
emission
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID OMEGA
AB A framed, 16-image, Kirkpatrick-Baez (KB)-type x-ray microscope has been designed for use in imaging laser-plasma x-ray emission. The reflecting elements are 16 pairs of concave mirrors arranged to reflect and focus x rays emanating from a laser-produced plasma. The resolution of the elements is 3 mum at best focus and is better than 5 mum within a 400-mum-diam region. A framing camera will be used in combination with the KB optic to produce 16 gated x-ray images in the energy range from 1.5 to 7 keV over a typical interval of 1.5 ns. This system is designed for use on the University of Rochester's OMEGA laser facility [T. R. Boehly , Opt Commun. 133, 495 (1997)]. (C) 2004 American Institute of Physics.
C1 Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA.
Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Marshall, FJ (reprint author), Univ Rochester, Laser Energet Lab, 250 E River Rd, Rochester, NY 14623 USA.
EM fredm@lle.rochester.edu
NR 9
TC 11
Z9 14
U1 1
U2 11
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 OCT
PY 2004
VL 75
IS 10
BP 4045
EP 4047
DI 10.1063/1.1789258
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900200
ER
PT J
AU Park, HS
Izumi, N
Key, MH
Koch, JA
Landen, OL
Patel, PK
Phillips, TW
Zhang, BB
AF Park, HS
Izumi, N
Key, MH
Koch, JA
Landen, OL
Patel, PK
Phillips, TW
Zhang, BB
TI Characteristics of high energy K alpha and Bremsstrahlung sources
generated by short pulse petawatt lasers
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
AB We have measured the characteristics of high energy Kalpha sources created with the Vulcan Petawatt laser at RAL and the JanUSP laser at Lawrence Livermore National Laboratory. High energy x-ray backlighters will be essential for radiographing high energy-density experimental science targets for NIF projects especially to probe implosions and high areal density planar samples. Hard Kalpha x-ray photons are created through relativistic electron plasma interactions in the target material after irradiated by short pulse high intensity lasers. For our Vulcan experiment, we employed a CsI scintillator charge coupled device (CCD) camera for imaging and a CCD camera for single photon counting. We have directly measured the 22 keV Ag Kalpha source size using the RAL petawatt laser and performed knife-edge measurements of a 40 keV Sm Kalpha source using the JanUSP laser. The measured source sizes are both similar to60 mum full width half maximum. We have also measured the Ag Kalpha conversion efficiencies. At laser intensities of 1x10(18) W/cm(2) range, the conversion efficiency at 22 keV is similar to1x10(-4). (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
Univ Calif Davis, Davis, CA 95616 USA.
RP Park, HS (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
EM park1@llnl.gov
RI Patel, Pravesh/E-1400-2011; IZUMI, Nobuhiko/J-8487-2016
OI IZUMI, Nobuhiko/0000-0003-1114-597X
NR 4
TC 38
Z9 39
U1 0
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 4048
EP 4050
DI 10.1063/1.1789596
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900201
ER
PT J
AU Wickersham, JE
Park, HS
Bell, PM
Koch, JA
Landen, OL
Moody, JD
AF Wickersham, JE
Park, HS
Bell, PM
Koch, JA
Landen, OL
Moody, JD
TI Imaging detectors for 20-100 keV x-ray backlighters in
high-energy-density experimental science petawatt experiments
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID LASER-TARGET
AB We are developing a petawatt laser for use as a high-energy backlighter source in the 20-100 keV range on the National Ignition Facility (NIF). High-energy x-ray backlighters will be essential for radiographing high-energy-density experimental science (HEDES) targets, especially to probe implosions and high areal density planar samples. For these high energy backlighter imaging experiments, we are developing two types of detectors: a columnar grown CsI scintillator coupled to a 2 Kx2 K charge-coupled device camera, and a CdTe crystal with special application specific integrated circuit readout electronics in a 508x512 format array. We characterized these sensors using Cd-109 and Am-241 radioactive isotopes. In addition, we employed them to measure the Sm Kalpha source size generated by the short pulse laser, JanUSP, at Lawrence Livermore National Laboratory. The CsI camera performed well, allowing a measurement of the Sm Kalpha source size. Calibration of this camera has shown that it has low noise and good resolution. The new CdTe camera performed well, however the noise level was too high for single photon counting. Some modifications to the camera will also be necessary in order to meet the needs of future hard x-ray experiments. Both cameras showed considerable promise as diagnostic tools for future high-energy x-ray backlighters for NIF HEDES experiments. This article will present the results of our characterizations of these detectors, and initial results from the JanUSP experiments. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Wickersham, JE (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
EM wickersham1@llnl.gov
NR 4
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 4051
EP 4053
DI 10.1063/1.1789259
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900202
ER
PT J
AU Bradley, DK
Holder, JP
Damian, CM
Piston, KW
Bell, PM
Dymoke-Bradshaw, AKL
Hares, JD
AF Bradley, DK
Holder, JP
Damian, CM
Piston, KW
Bell, PM
Dymoke-Bradshaw, AKL
Hares, JD
TI Progress on the development of a single line of sight x-ray framing
camera
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
AB High-speed microstrip microchannel plate (MCP) x-ray framing cameras are a well established diagnostic for laser plasma experiments. Each frame acquired with these devices requires a separate image, and with most reasonable x-ray optics, a separate line of sight, causing potential parallax problems. Gated image tubes have a single line of sight capability, but the conventional designs have not been effectively extended to the short gating times of the microstrip-line MCP camera. A hybrid camera combining image tube and microstrip-line MCP technology has been under development at Lawrence Livermore National Lab in collaboration with University of Rochester Lab for Laser energetics, and KENTECH Instruments. The key feature of this single line of sight hybrid image tube is a deflection assembly that continuously divides the electrons from a single photocathode x-ray image into a set of four electron images. Temporal gating of these images is carried out using a microstrip-line microchannel plate framing camera module positioned at the image plane of the electron tube. Characterization measurements performed using both x rays from a Manson source and from laser generated plasmas, will be presented. Some implementation improvements will be discussed. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Kentech Instruments Ltd, Unit 9, Hall Farm Workshops, Didcot OX11 9AG, Oxon, England.
RP Bradley, DK (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
NR 5
TC 2
Z9 2
U1 1
U2 4
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 OCT
PY 2004
VL 75
IS 10
BP 4054
EP 4056
DI 10.1063/1.1789607
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900203
ER
PT J
AU Keiter, PA
Kyrala, GA
AF Keiter, PA
Kyrala, GA
TI Static characterization of aerogel targets for high energy density
physics using x-ray radiography
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
AB Knowledge of the density of aerogel foams used in high energy density physics experiments is crucial for simulating and understanding the results of experiments. An average density for the foams is gravimetrically determined, but provides no information on the uniformity of the density. X-ray radiography is used to determine the density uniformity of the foams and the average density of the foams. A comparison between a monochromatic and polychromatic method of determining the density from the x-ray radiography is performed and compared to the gravimetric results. (C) 2004 American Institute of Physics.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Keiter, PA (reprint author), Los Alamos Natl Lab, POB 1663,MS E-526, Los Alamos, NM 87545 USA.
EM pkeiter@lanl.gov
RI Keiter, Paul/J-3037-2013
NR 3
TC 4
Z9 4
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 4057
EP 4059
DI 10.1063/1.1789260
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900204
ER
PT J
AU Kimbrough, JR
Moody, JD
Bell, PM
Landen, OL
AF Kimbrough, JR
Moody, JD
Bell, PM
Landen, OL
TI Characterization of the series 1000 camera system
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID CHARGE-COUPLED-DEVICE; X-RAY
AB The National Ignition Facility requires a compact network addressable scientific grade charge coupled device (CCD) camera for use in diagnostics ranging from streak cameras to gated x-ray imaging cameras. Due to the limited space inside the diagnostic, an analog and digital input/output option in the camera controller permits control of both the camera and the diagnostic by a single Ethernet link. The system consists of a Spectral Instruments Series 1000 camera, a PC104+ controller, and power supply. The 4k by 4k CCD camera has a dynamic range of 70 dB with less than 14 electron read noise at a 1 MHz readout rate. The PC104+ controller includes 16 analog inputs, four analog outputs, and 16 digital input/output lines for interfacing to diagnostic instrumentation. A description of the system and performance characterization is reported. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Kimbrough, JR (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
EM kimbrough1@llnl.gov
NR 6
TC 9
Z9 11
U1 0
U2 2
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 OCT
PY 2004
VL 75
IS 10
BP 4060
EP 4062
DI 10.1063/1.1789261
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900205
ER
PT J
AU Paul, SF
Cates, CJ
Mauel, ME
Maurer, DA
Navratil, GA
Paul, RM
Pedersen, TS
Shilov, MA
AF Paul, SF
Cates, CJ
Mauel, ME
Maurer, DA
Navratil, GA
Paul, RM
Pedersen, TS
Shilov, MA
TI High-speed optical diagnostic that uses interference filters to measure
Doppler shifts
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID PLASMA ROTATION; SPECTROSCOPY
AB A high-speed, noninvasive velocity diagnostic has been developed for measuring plasma rotation. The Doppler shift is determined by employing two detectors that view line emission from the identical volume of plasma. Each detector views through an interference filter having a passband that varies linearly with wavelength. One detector views the plasma through a filter whose passband has a negative slope and the second detector views through one with a positive slope. Because each channel views the same volume of plasma, the ratio of the amplitudes is not sensitive to variations in plasma emission. With suitable knowledge of the filter characteristics and the relative gain, the Doppler shift is readily obtained in real time from the ratio of two channels without needing a low throughput spectrometer. The systematic errors-arising from temperature drifts, stability, and frequency response of the detectors and amplifiers, interference filter linearity, and ability to thoroughly homogenize the light from the fiber bundle-can be characterized well enough to obtain velocity data with +/-1 km/s with a time resolution of 0.3 ms. (C) 2004 American Institute of Physics.
C1 Princeton Univ, Plasma Phys Lab, Princeton, NJ 08543 USA.
Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA.
RP Paul, SF (reprint author), Princeton Univ, Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
EM spaul@pppl.gov
OI Mauel, Michael/0000-0003-2490-7478
NR 10
TC 5
Z9 5
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 OCT
PY 2004
VL 75
IS 10
BP 4077
EP 4081
DI 10.1063/1.1790057
PN 2
PG 5
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900208
ER
PT J
AU Hemsing, E
Furno, I
Intrator, T
Wei, D
AF Hemsing, E
Furno, I
Intrator, T
Wei, D
TI Analysis of visible light images from a fast-gated intensified charge
coupled device camera during flux rope interaction and magnetic
reconnection
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID PLASMA
AB We present the experimental setup and analysis of visible light images from a fast double-gated intensified charge coupled device (CCD) camera currently being used on the reconnection scaling experiment (RSX) at the Los Alamos National Laboratory. In RSX, externally driven free-boundary flux ropes are generated for magnetic reconnection studies in collisional plasma. Time-resolved images of flux rope interaction on submicrosecond time scales are achieved through the use of a microchannel plate intensified CCD camera and are shown to be consistent with probe measurements of plasma pressure and magnetic structure. High experimental repeatability allows plasma evolution to be displayed and measured from images taken over hundreds of RSX discharges to elucidate flux rope interaction dynamics. Peak-intensity fit algorithms extrapolate rope separation and two-dimensional rope velocities from images in agreement with probe data. First glimpses of two flux ropes that twist and merge are presented. (C) 2004 American Institute of Physics.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
MIT, Cambridge, MA 02139 USA.
RP Hemsing, E (reprint author), Los Alamos Natl Lab, MS E526, Los Alamos, NM 87545 USA.
EM ehemsing@lanl.gov
NR 3
TC 2
Z9 2
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 4106
EP 4108
DI 10.1063/1.1787169
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900217
ER
PT J
AU Furno, I
Wurden, GA
AF Furno, I
Wurden, GA
TI Near infrared spectroscopy of the divertor region in the Alcator C-Mod
tokamak
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID TARGET PLATES; RECOMBINATION
AB A new system for near infrared spectroscopic measurements (1.2-2.6 mum) is designed for the Alcator C-Mod tokamak. These measurements will provide a new window into understanding the physics of detached and/or high radiating plasmas. The system, located on top of the Alcator C-Mod concrete igloo, will view a 30x30 cm(2) region of the lower divertor by means of a re-entrant 5 m long ZnSe based periscope. A McPherson 218 spectrometer will disperse the light that will then be detected by a thermoelectrically cooled InGaAs, 256-element linear image sensor. The signals from each pixel will be digitized by a 16-bit, 333 kHz analog/digital board and then transmitted over optical link to a personal computer (PC) located in Alcator C-Mod control room. The PC will remotely control the system and store the data in the MDSplus database. (C) 2004 American Institute of Physics.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Furno, I (reprint author), Los Alamos Natl Lab, MS E526, Los Alamos, NM 87545 USA.
EM furno@lanl.gov
RI Wurden, Glen/A-1921-2017
OI Wurden, Glen/0000-0003-2991-1484
NR 13
TC 1
Z9 1
U1 0
U2 4
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 OCT
PY 2004
VL 75
IS 10
BP 4112
EP 4114
DI 10.1063/1.1787147
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900219
ER
PT J
AU Kuritsyn, A
Levinton, FM
AF Kuritsyn, A
Levinton, FM
TI Development of the megahertz planar laser-induced fluorescence
diagnostic for plasma turbulence visualization
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID EDGE TURBULENCE
AB A megahertz laser-induced fluorescence-based diagnostic system for measuring ion density fluctuations in two spatial dimensions is described. Well resolved spatial and temporal two-dimensional (2D) images of turbulent structures will be useful in understanding ion turbulence in magnetically confined plasmas which is a key factor in the performance of fusion experimental devices. A sheet beam of a megahertz repetition rate tunable Alexandrite laser is used to excite ion emission from argon plasma. The fluorescence emitted from the plane of the laser beam is detected with a narrow band interference filter and intensified ultrafast charge coupled device camera providing 2D images of relative ion density fluctuations every microsecond. It is expected that the edge plasma on fusion devices will be accessible to this technique. (C) 2004 American Institute of Physics.
C1 Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
Nova Photon Inc, Princeton, NJ 08540 USA.
RP Kuritsyn, A (reprint author), Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
EM kav@princeton.edu
NR 15
TC 1
Z9 1
U1 0
U2 2
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 OCT
PY 2004
VL 75
IS 10
BP 4115
EP 4117
DI 10.1063/1.1787148
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900220
ER
PT J
AU Bell, RE
AF Bell, RE
TI Exploiting a transmission grating spectrometer
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID ROTATION
AB The availability of compact transmission grating spectrometers now allows an attractive and economical alternative to the more familiar Czerny-Turner configuration for many high-temperature plasma applications. Higher throughput is obtained with short focal length refractive optics and stigmatic imaging. Many more spectra can be obtained with a single spectrometer since smaller, more densely packed optical input fibers can be used. Multiple input slits, along with a bandpass filter, can be used to maximize the number of spectra per detector, providing further economy. Curved slits can correct for the strong image curvature of the short focal length optics. Presented here are the governing grating equations for both standard and high-dispersion transmission gratings, defining dispersion, image curvature, and desired slit curvature, that can be used in the design of improved plasma diagnostics. (C) 2004 American Institute of Physics.
C1 Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Bell, RE (reprint author), Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
EM rbell@pppl.gov
NR 8
TC 36
Z9 39
U1 0
U2 2
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 OCT
PY 2004
VL 75
IS 10
BP 4158
EP 4161
DI 10.1063/1.1787601
PN 2
PG 4
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900233
ER
PT J
AU Graf, A
May, M
Beiersdorfer, P
Magee, E
Lawrence, M
Rice, J
AF Graf, A
May, M
Beiersdorfer, P
Magee, E
Lawrence, M
Rice, J
TI High resolution transmission grating spectrometer for edge toroidal
rotation measurements of tokamak plasmas
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID ALCATOR C-MOD; EXCHANGE RECOMBINATION SPECTROSCOPY; TRANSPORT BARRIER
PLASMAS; NEUTRAL-BEAM; TEMPERATURE; PROFILES; ION
AB We present a high throughput (f/3) visible (3500-7000 A) Doppler spectrometer for toroidal rotation velocity measurements of the Alcator C-Mod tokamak plasma. The spectrometer has a temporal response of 1 ms and a rotation velocity sensitivity of similar to10(5) cm/s. This diagnostic will have a tangential view and map out the plasma rotation at several locations along the outer half of the minor radius (r/a>0.5). The plasma rotation will be determined from the Doppler shifted wavelengths of D-alpha and magnetic and electric dipole transitions of highly ionized impurities in the plasma. The fast time resolution and high spectral resolving power are possible due to a 6 in. diam circular transmission grating that is capable of lambda/Deltalambdasimilar to15 500 at 5769 Angstrom in conjunction with a 50 mum slit. (C) 2004 American Institute of Physics.
C1 Univ Calif Davis, Davis, CA 95616 USA.
Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA.
RP Graf, A (reprint author), Univ Calif Davis, Davis, CA 95616 USA.
EM graf2@llnl.gov
NR 15
TC 9
Z9 10
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 4165
EP 4167
DI 10.1063/1.1789591
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900235
ER
PT J
AU Froula, DH
Bower, D
Chrisp, M
Grace, S
Kamperschroer, JH
Kelleher, TM
Kirkwood, RK
MacGowan, B
McCarville, T
Sewall, N
Shimamoto, FY
Shiromizu, SJ
Young, B
Glenzer, SH
AF Froula, DH
Bower, D
Chrisp, M
Grace, S
Kamperschroer, JH
Kelleher, TM
Kirkwood, RK
MacGowan, B
McCarville, T
Sewall, N
Shimamoto, FY
Shiromizu, SJ
Young, B
Glenzer, SH
TI Full-aperture backscatter measurements on the National Ignition Facility
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
AB The National Ignition Facility's full-aperture backscatter station (FABS) is described. The FABS uses five independent diagnostics on each of the four laser beams in the initial National Ignition Facility quad to measure the energy, power, spectrum, and near-field amplitude modulations of the stimulated Brillouin and stimulated Raman backscattered light. In initial tests CO2 and C5H12 gas-filled targets were used to create various laser-plasma interaction conditions which have shown the capability of producing ignition size laser plasmas with reflectivites on the order of 10%. Results are presented for tests in which 16 kJ on target produced between 0.3 and 2.5 kJ of backscattered light. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Froula, DH (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA.
EM froula1@llnl.gov
NR 5
TC 30
Z9 31
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 4168
EP 4170
DI 10.1063/1.1789592
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900236
ER
PT J
AU Niemann, C
Antonini, G
Compton, S
Glenzer, SH
Hargrove, D
Moody, JD
Kirkwood, RK
Rekow, V
Satariano, J
Sorce, C
Armstrong, W
Bahr, R
Keck, R
Pien, G
Seka, W
Thorp, K
AF Niemann, C
Antonini, G
Compton, S
Glenzer, SH
Hargrove, D
Moody, JD
Kirkwood, RK
Rekow, V
Satariano, J
Sorce, C
Armstrong, W
Bahr, R
Keck, R
Pien, G
Seka, W
Thorp, K
TI Transmitted laser beam diagnostic at the Omega laser facility
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID NOVA
AB We have developed and commissioned a transmitted beam diagnostic (TBD) for the 2omega high intensity interaction beam at the Omega laser facility. The TBD consists of a bare-surface reflector mounted near the target, which collects and reflects 4% of the transmitted light to a detector assembly outside the vacuum chamber. The detector includes a time integrating near-field camera that measures beam spray, deflection, and the absolute transmitted power. We present a detailed description of the instrument and the calibration method and include first measurements on laser heated gas bag targets to demonstrate the performance of the diagnostic. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA.
RP Niemann, C (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA.
EM niemann1@llnl.gov
NR 7
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 OCT
PY 2004
VL 75
IS 10
BP 4171
EP 4173
DI 10.1063/1.1787602
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900237
ER
PT J
AU Kirkwood, RK
Mccarville, T
Froula, DH
Young, B
Bower, D
Sewall, N
Niemann, C
Schneider, M
Moody, J
Gregori, G
Holdener, F
Chrisp, M
MacGowan, BJ
Glenzer, SH
Montgomery, DS
AF Kirkwood, RK
Mccarville, T
Froula, DH
Young, B
Bower, D
Sewall, N
Niemann, C
Schneider, M
Moody, J
Gregori, G
Holdener, F
Chrisp, M
MacGowan, BJ
Glenzer, SH
Montgomery, DS
TI Calibration of initial measurements from the full aperture backscatter
system on the National Ignition Facility
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID PLASMAS
AB The full aperture backscatter system provides a measure of the spectral power, and integrated energy scattered by stimulated Brillouin (348-354 nm) and Raman (400-800 nm) scattering into the final focusing lens of the first four beams of the NIF laser. The system was designed to provide measurements at the highest expected fluences with: (1) spectral and temporal resolution, (2) beam aperture averaging, and (3) near-field imaging. This is accomplished with a strongly attenuating diffusive fiber coupler and streaked spectrometer and separate calibrated time integrated spectrometers, and imaging cameras. A new technique determines the wavelength dependent sensitivity of the complete system with a calibrated Xe lamp. Data from the calibration system are combined with scattering data from targets to produce the calibrated power and energy measurements that show significant corrections due to the broad band calibrations. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Los Alamos Natl Lab, Los Alamos, NM USA.
RP Kirkwood, RK (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
EM kirkwood1@llnl.gov
NR 5
TC 9
Z9 11
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 4174
EP 4176
DI 10.1063/1.1789593
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900238
ER
PT J
AU Bower, DE
McCarville, TJ
Alvarez, SS
Ault, LE
Brown, MD
Chrisp, MP
Damian, CM
DeHope, WJ
Froula, DH
Glenzer, SH
Grace, SE
Gu, K
Holdener, FR
Huffer, CK
Kamperschroer, JH
Kelleher, TM
Kimbrough, JR
Kirkwood, R
Kurita, DW
Lee, AP
Lee, FD
Lewis, IT
Lopez, FJ
MacGowan, BJ
Poole, MW
Rhodes, MA
Schneider, MB
Sewall, NR
Shimamoto, FY
Shiromizu, SJ
Voloshin, D
Warrick, AL
Wendland, CR
Young, BK
AF Bower, DE
McCarville, TJ
Alvarez, SS
Ault, LE
Brown, MD
Chrisp, MP
Damian, CM
DeHope, WJ
Froula, DH
Glenzer, SH
Grace, SE
Gu, K
Holdener, FR
Huffer, CK
Kamperschroer, JH
Kelleher, TM
Kimbrough, JR
Kirkwood, R
Kurita, DW
Lee, AP
Lee, FD
Lewis, IT
Lopez, FJ
MacGowan, BJ
Poole, MW
Rhodes, MA
Schneider, MB
Sewall, NR
Shimamoto, FY
Shiromizu, SJ
Voloshin, D
Warrick, AL
Wendland, CR
Young, BK
TI Full aperture backscatter station measurement system on the National
Ignition Facility
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
AB A full aperture backscatter station (FABS) target diagnostic has been activated on the first four beams of the National Ignition Facility. FABS measures both stimulated Brillouin scattering and stimulated Raman scattering with a suite of measurement instruments. Digital cameras and spectrometers record spectrally resolved energy for both P and S polarized light. Streaked spectrometers measure the spectral and temporal behavior of the backscattered light. Calorimeters and fast photodetectors measure the integrated energy and temporal behavior of the light, respectively. This article provides an overview of the FABS measurement system and detailed descriptions of the diagnostic instruments and the optical path. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Bower, DE (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
EM bower5@llnl.gov
NR 2
TC 13
Z9 14
U1 1
U2 2
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 OCT
PY 2004
VL 75
IS 10
BP 4177
EP 4179
DI 10.1063/1.1791749
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900239
ER
PT J
AU Mackinnon, AJ
McCarville, T
Piston, K
Niemann, C
Jones, G
Reinbachs, I
Costa, R
Celeste, J
Holtmeier, G
Griffith, R
Kirkwood, R
MacGowan, B
Glenzer, SH
Latta, MR
AF Mackinnon, AJ
McCarville, T
Piston, K
Niemann, C
Jones, G
Reinbachs, I
Costa, R
Celeste, J
Holtmeier, G
Griffith, R
Kirkwood, R
MacGowan, B
Glenzer, SH
Latta, MR
TI Implementation of a near backscattering imaging system on the National
Ignition Facility
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID PLASMAS
AB A near backscattering imaging diagnostic system is being implemented on the first quad of beams on the National Ignition Facility. This diagnostic images diffusing scatter plates, placed around the final focus lenses on the National Ignition Facility target chamber, to quantitatively measure the fraction of light backscattered outside of the focusing cone angle of incident laser beam. A wide-angle imaging system relays an image of light scattered outside the lens onto a gated charge coupled device camera, providing 3 mm resolution over a 2 m field of view. To account for changes of the system throughput due to exposure to target debris the system will be routinely calibrated in situ at 532 and 355 nm using a dedicated pulsed laser source. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Mackinnon, AJ (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
EM mackinnon2@llnl.gov
RI MacKinnon, Andrew/P-7239-2014
OI MacKinnon, Andrew/0000-0002-4380-2906
NR 5
TC 25
Z9 31
U1 0
U2 2
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 OCT
PY 2004
VL 75
IS 10
BP 4183
EP 4186
DI 10.1063/1.1789594
PN 2
PG 4
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900241
ER
PT J
AU Roquemore, AL
Biewer, T
Johnson, D
Zweben, SJ
Nishino, N
Soukhanovskii, VA
AF Roquemore, AL
Biewer, T
Johnson, D
Zweben, SJ
Nishino, N
Soukhanovskii, VA
TI NSTX tangential divertor camera
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
AB Strong magnetic field shear around the divertor x-point is numerically predicted to lead to strong spatial asymmetries in turbulence driven particle fluxes. To visualize the turbulence and associated impurity line emission near the lower x-point region, a new tangential observation port has been recently installed on NSTX. A reentrant sapphire window with a moveable in-vessel mirror images the divertor region from the center stack out to Rsimilar to80 cm and views the x-point for most plasma configurations. A coherent fiber optic bundle transmits the image through a remotely selected filter to a fast camera, for example, a 40 500 frames/s photron complementary metal-oxide-semiconductor camera. A gas puffer located in the lower inboard divertor will localize the turbulence in the region near the x-point. Edge fluid and turbulent codes UEDGE and BOUT will be used to interpret impurity and deuterium emission fluctuation measurements in the divertor. (C) 2004 American Institute of Physics.
C1 Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
Hiroshima Univ, Hiroshima, Japan.
Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Roquemore, AL (reprint author), Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
EM Lroquemore@pppl.gov
OI Biewer, Theodore/0000-0001-7456-3509
NR 6
TC 9
Z9 9
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 4190
EP 4192
DI 10.1063/1.1789609
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900243
ER
PT J
AU Casper, TA
Jayakumar, J
Makowski, MA
Ellis, R
AF Casper, TA
Jayakumar, J
Makowski, MA
Ellis, R
TI Design aspects of a MSE diagnostic for ITER
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID DIII-D
AB The motional Stark effect (MSE) diagnostic is unique in its ability to measure the current profile and will be essential in the International Thermonuclear Experimental Reactor (ITER) for detailed analysis of Advanced Tokamak and other types of discharges. However, design of a MSE diagnostic for ITER presents many unique challenges. Among these is optical analysis for the convoluted optical path, required for effective neutron shielding, that employs several reflective optics arranged to form a labyrinth. The geometry of the diagnostic has been laid out and the expected Doppler shifts and channel resolution calculated. A model of the optical train has also been developed based on the Mueller matrix formalism. Unfolding the pitch angle for this complicated geometry is not straightforward and possible methods are evaluated. The CORSICA code is used to model a variety of ITER discharges including start-up, Ip-ramp, and reverse shear. The code also incorporates a synthetic MSE diagnostic that can be used to evaluate different viewing locations and optimize channel locations for the above discharges. Simulation of the optical emission spectrum is also under way. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94566 USA.
RP Casper, TA (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94566 USA.
EM casper1@llnl.gov
NR 12
TC 3
Z9 3
U1 2
U2 2
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 OCT
PY 2004
VL 75
IS 10
BP 4193
EP 4195
DI 10.1063/1.1787604
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900244
ER
PT J
AU Terry, JL
Zweben, SJ
Bose, B
Grulke, O
Marmar, ES
Lowrance, J
Mastrocola, V
Renda, G
AF Terry, JL
Zweben, SJ
Bose, B
Grulke, O
Marmar, ES
Lowrance, J
Mastrocola, V
Renda, G
TI High speed movies of turbulence in Alcator C-Mod
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID TOKAMAK; TRANSPORT; BOUNDARY
AB A high speed (250 kHz), 300 frame charge coupled device camera has been used to image turbulence in the Alcator C-Mod Tokamak. The camera system is described and some of its important characteristics are measured, including time response and uniformity over the field-of-view. The diagnostic has been used in two applications. One uses gas-puff imaging to illuminate the turbulence in the edge/scrape-off-layer region, where D-2 gas puffs localize the emission in a plane perpendicular to the magnetic field when viewed by the camera system. The dynamics of the underlying turbulence around and outside the separatrix are detected in this manner. In a second diagnostic application, the light from an injected, ablating, high speed Li pellet is observed radially from the outer midplane, and fast poloidal motion of toroidal striations are seen in the Li+ light well inside the separatrix. (C) 2004 American Institute of Physics.
C1 MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA.
Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
EURATOM, MPI Plasma Phys, Greifswald, Germany.
Princeton Sci Instruments Inc, Princeton, NJ 08852 USA.
RP Terry, JL (reprint author), MIT, Plasma Sci & Fus Ctr, 77 Massachusetts Ave, Cambridge, MA 02139 USA.
EM terry@psfc.mit.edu
NR 12
TC 13
Z9 13
U1 0
U2 2
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 OCT
PY 2004
VL 75
IS 10
BP 4196
EP 4199
DI 10.1063/1.1789597
PN 2
PG 4
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900245
ER
PT J
AU Bell, PM
Landen, OL
Weber, FA
Lowry, ME
Bennett, CV
Kimbrough, JR
Moody, JD
Holder, JP
Lerche, RA
Griffith, RL
Park, HS
Boni, R
Jaanimagi, PA
Davies, T
AF Bell, PM
Landen, OL
Weber, FA
Lowry, ME
Bennett, CV
Kimbrough, JR
Moody, JD
Holder, JP
Lerche, RA
Griffith, RL
Park, HS
Boni, R
Jaanimagi, PA
Davies, T
TI Target diagnostic technology research and development for the LLNL ICF
and HED program (invited)
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID CAMERA; IMAGER
AB The National Ignition Facility is operational at Lawrence Livermore National Laboratory (LLNL). The inertial confinement fusion and HED programs at LLNL have formed diagnostic research and development groups to institute improvements outside the charter of core diagnostics. We will present data from instrumentation being developed. A major portion of our work is improvements to detectors and readout systems. We have efforts related to charge-coupled device (CCD) development. Work has been done in collaboration with the University of Arizona to back thin a large format CCD device. We have developed in collaboration with a commercial vendor a large format, compact CCD system. We have coupled large format CCD systems to our optical and x-ray streak cameras leading to improvements in resolution and dynamic range. We will discuss gate width and uniformity improvements to microchannel plate-based framing cameras. We will present data from single shot data link work and discuss technology aimed at improvements of dynamic range for high-speed transient measurements from remote locations. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA.
Bechtel Nevada, Special Technol Lab, Santa Barbara, CA 94551 USA.
RP Bell, PM (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94550 USA.
EM bell11@llnl.gov
RI Bennett, Corey/C-2403-2009
OI Bennett, Corey/0000-0003-4365-5739
NR 9
TC 1
Z9 1
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 OCT
PY 2004
VL 75
IS 10
BP 4200
EP 4203
DI 10.1063/1.1789598
PN 2
PG 4
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900246
ER
PT J
AU Bourgade, JL
Allouche, V
Baggio, J
Bayer, C
Bonneau, F
Chollet, C
Darbon, S
Disdier, L
Gontier, D
Houry, M
Jacquet, HP
Jadaud, JP
Leray, JL
Masclet-Gobin, I
Negre, JP
Raimbourg, J
Villette, B
Bertron, I
Chevalier, JM
Favier, JM
Gazave, J
Gomme, JC
Malaise, F
Seaux, JP
Glebov, VY
Jaanimagi, P
Stoeckl, C
Sangster, TC
Pien, G
Lerche, RA
Hodgson, ER
AF Bourgade, JL
Allouche, V
Baggio, J
Bayer, C
Bonneau, F
Chollet, C
Darbon, S
Disdier, L
Gontier, D
Houry, M
Jacquet, HP
Jadaud, JP
Leray, JL
Masclet-Gobin, I
Negre, JP
Raimbourg, J
Villette, B
Bertron, I
Chevalier, JM
Favier, JM
Gazave, J
Gomme, JC
Malaise, F
Seaux, JP
Glebov, VY
Jaanimagi, P
Stoeckl, C
Sangster, TC
Pien, G
Lerche, RA
Hodgson, ER
TI New constraints for plasma diagnostics development due to the harsh
environment of MJ class lasers (invited)
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID NATIONAL-IGNITION-FACILITY; INERTIAL CONFINEMENT FUSION; DETECTORS;
TIME; SPECTROMETER; MANIPULATOR; TARGETS; SYSTEM; OMEGA; NOVA
AB The design of plasma diagnostics for the future MJ class lasers (LMJ-Laser MegaJoule-in France or NIF-National Ignition Faciliy- in the USA) must take into account the large increased radiation field generated at the target and the effect on the diagnostics components. These facilities will focus up to 1.8 MJ ultraviolet laser light energy into a volume of less than 1 cm(3) in a few nanoseconds. This very high power focused onto a small target will generate a large amount of x rays, debris, shrapnel, and nuclear particles (neutrons and gamma rays) if the DT fuel capsules ignite. Ignition targets will produce a million more of 14 MeV neutrons (10(19) neutrons) by comparison with the present worldwide most powerful laser neutron source facility at OMEGA. Under these harsh environmental conditions the survivability goal of present diagnostic is not clear and many new studies must be carried out to verify which diagnostic measurement techniques, can be maintained, adapted or must be completely changed. Synergies with similar environment studies conducted for magnetic fusion diagnostic design for ITER facility are considered and must be enhanced. (C) 2004 American Institute of Physics.
C1 CEA, DIF, F-91680 Bruyeres Le Chatel, France.
CEA, CESTA, F-33114 Le Barp, France.
Univ Rochester, Laser Energet Lab, Rochester, NY 14523 USA.
Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Euratom CIEMAT Fus Assoc, Madrid 28040, Spain.
RP Bourgade, JL (reprint author), CEA, DIF, BP 12, F-91680 Bruyeres Le Chatel, France.
EM jean-luc.bourgade@cea.fr
RI Houry, Michael/G-8021-2011
NR 65
TC 45
Z9 45
U1 0
U2 9
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 OCT
PY 2004
VL 75
IS 10
BP 4204
EP 4212
DI 10.1063/1.1789610
PN 2
PG 9
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900247
ER
PT J
AU Skinner, CH
Roquemore, AL
Bader, A
Wampler, WR
AF Skinner, CH
Roquemore, AL
Bader, A
Wampler, WR
CA NSTX Team
TI Deposition diagnostics for next-step devices (invited)
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID QUARTZ MICROBALANCE; DUST PARTICLES; FUSION DEVICE; PLASMA EDGE;
TOKAMAK; WALL; NSTX; JET; ISSUES; BETA
AB Deposition in next-step devices such as ITER will pose diagnostic challenges. Codeposition of hydrogen with carbon needs to be characterized and understood in the initial hydrogen phase in order to mitigate tritium retention and qualify carbon plasma facing components for DT operations. Plasma facing diagnostic mirrors will experience deposition that is expected to rapidly degrade their reflectivity, posing a challenge to diagnostic design. Some eroded particles will collect as dust on interior surfaces and the quantity of dust will be strictly regulated for safety reasons however, diagnostics of in-vessel dust are lacking. We report results from two diagnostics that relate to these issues. Measurements of deposition on NSTX with 4 Hz time resolution have been made using a quartz microbalance in a configuration that mimics that of a typical diagnostic mirror. Often deposition was observed immediately following the discharge suggesting that diagnostic shutters should be closed as soon as possible after the time period of interest. Material loss was observed following a few discharges. A novel diagnostic to detect dust particles on remote surfaces was commissioned on NSTX. (C) 2004 American Institute of Physics.
C1 Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
Cooper Union Adv Sci & Art, New York, NY 10003 USA.
Sandia Natl Labs, Albuquerque, NM 87175 USA.
RP Skinner, CH (reprint author), Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
NR 30
TC 18
Z9 18
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 OCT
PY 2004
VL 75
IS 10
BP 4213
EP 4218
DI 10.1063/1.1783600
PN 2
PG 6
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900248
ER
PT J
AU Mead, MJ
Neely, D
Gauoin, J
Heathcote, R
Patel, P
AF Mead, MJ
Neely, D
Gauoin, J
Heathcote, R
Patel, P
TI Electromagnetic pulse generation within a petawatt laser target chamber
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
AB Recent work has been undertaken to characterize the electromagnatic pulse (EMP) generated by the high temperature high density plasma produced by a petawatt laser. This was to evaluate the susceptibility to malfunction and damage of equipment and diagnostics for the new Orion laser. EMP measurement were made using moebius loop antennas fitted inside the target chamber of the Vulcan petawatt laser at the Rutherford Appleton Laboratory. These show the EMP as a 63 MHz transient which decays from a peak magnetic field of around 4.3 A/m. A theoretical model presented assumes the EMP is produced by an impulse of 10(12) electron emanating from the target, which charge the chamber wall causing it to ring at natural frequency. The theoretical model provides an estimate of the EMP measured in the Vulcan petawatt target chamber and will be used for the design of the Orion laser. (C) 2004 American Institute of Physics.
C1 Atom Weap Estab, Reading RG7 4PR, Berks, England.
Rutherford Appleton Lab, CLRC, Didcot OX11 0QX, Oxon, England.
Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Mead, MJ (reprint author), Atom Weap Estab, Reading RG7 4PR, Berks, England.
EM michael.mead@awe.co.uk
RI Patel, Pravesh/E-1400-2011
NR 4
TC 27
Z9 28
U1 0
U2 9
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 OCT
PY 2004
VL 75
IS 10
BP 4225
EP 4227
DI 10.1063/1.1787606
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900251
ER
PT J
AU Giannella, R
Hawkes, NC
Jayakumar, R
Makowski, M
Zabeo, L
AF Giannella, R
Hawkes, NC
Jayakumar, R
Makowski, M
Zabeo, L
TI Point-to-point analysis of MSE data for plasma diagnostics and control
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID EQUILIBRIUM RECONSTRUCTION; CURRENT PROFILES; POLARIMETRY; TOKAMAKS;
FIELD; JET
AB A local analysis technique is presented for the analysis of MSE data to deduce the safety factor q in tokamak discharges. The technique preserves as much as possible the individuality of every single measure by a simple rule of translation of magnetic field pitch angle measurements into q-values. Based on a geometric approach, and the observation that the flux surfaces shapes are strongly constrained by that of the last closed flux surface (LCFS), by the position of the magnetic axis and by a few more global parameters, it provides a robust, nonsubjective, accurate technique that is useful for the experimental study of q-profiles and for the evaluation of its uncertainties. It also provides a useful tool for plasma control experiments as it does not submit data to a preliminary search of minima in a multi-parametric domain, a procedure that may lead to jumps in the time behavior of the produced results. (C) 2004 American Institute of Physics.
C1 CEN Cadarache, Assoc EURATOM CEA, F-13108 St Paul Les Durance, France.
Culham Sci Ctr, EURATOM, UKAEA, Abingdon OX14 3DB, Oxon, England.
Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Giannella, R (reprint author), CEN Cadarache, Assoc EURATOM CEA, F-13108 St Paul Les Durance, France.
EM ruggero.giannella@cea.fr
NR 11
TC 2
Z9 2
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 4247
EP 4250
DI 10.1063/1.1781379
PN 2
PG 4
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900258
ER
PT J
AU Tran, V
Bennett, CV
Sargis, PD
Kimbrough, JR
Bell, PM
Blair, JJ
AF Tran, V
Bennett, CV
Sargis, PD
Kimbrough, JR
Bell, PM
Blair, JJ
TI Single channel analog data links for use with high bandwidth recording
systems for the National Ignition Facility
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID DIRECT MODULATION BANDWIDTH; LASER
AB The National Ignition Facility at the Lawrence Livermore National Laboratory requires high bandwidth and high dynamic range data transmission from the target chamber area to diagnostic recording equipment approximately 46 m away. The systems need to pass short pulse signals with high fidelity, requiring a broadband frequency response from below 10 MHz to greater than 6 GHz, that has flat amplitude and a linear phase response. We present here the characterization of a few selected fiber optic systems and work done to optimize the performance of a fiber link and single-shot transient digitizer system. Each link is evaluated by its bandwidth, the fidelity of its step response, the signal loss, and its usable dynamic range. (C) 2004 American Institute of Physics.
C1 LLNL, Livermore, CA 94551 USA.
Bechtel Nevada, N Las Vegas, NV 89030 USA.
RP Tran, V (reprint author), LLNL, Livermore, CA 94551 USA.
RI Bennett, Corey/C-2403-2009
OI Bennett, Corey/0000-0003-4365-5739
NR 11
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 4281
EP 4283
DI 10.1063/1.1791336
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900268
ER
PT J
AU Zhang, SY
Tejero, EM
Taccetti, JM
Wurden, GA
Intrator, TP
Waganaar, WJ
Perkins, R
AF Zhang, SY
Tejero, EM
Taccetti, JM
Wurden, GA
Intrator, TP
Waganaar, WJ
Perkins, R
TI Separatrix radius measurement of field-reversed configuration plasma in
FRX-L
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID MAGNETIZED TARGET FUSION
AB Magnetic pickup coils and single turn flux loops are installed on the FRX-L device. The combination of the two measurements provides the excluded flux radius that approximates the separatrix radius of the field-reversed configuration (FRC) plasma. Arrays of similar probes are used to map out local magnetic field dynamics beyond both ends of the theta-coil confinement region to help understand the effects of cusp locations on flux trapping during the FRC formation process. Details on the probe design and system calibrations are presented. The overall system calibration of excluded flux radius measurement is examined by replacing FRC plasma with a known radius aluminum conductor cylinder. (C) 2004 American Institute of Physics.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Zhang, SY (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM syzhang@lanl.gov
RI Wurden, Glen/A-1921-2017
OI Wurden, Glen/0000-0003-2991-1484
NR 6
TC 6
Z9 6
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 OCT
PY 2004
VL 75
IS 10
BP 4289
EP 4292
DI 10.1063/1.1789618
PN 2
PG 4
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900271
ER
PT J
AU Soukhanovskii, VA
Kugel, HW
Kaita, R
Majeski, R
Roquemore, AL
AF Soukhanovskii, VA
Kugel, HW
Kaita, R
Majeski, R
Roquemore, AL
TI Supersonic gas injector for fueling and diagnostic applications on the
National Spherical Torus Experiment
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID TOKAMAK; NSTX; FLUX
AB A prototype pulsed supersonic gas injector (SGI) has been developed for the National Spherical Torus Experiment (NSTX). Experiments in NSTX will explore the compatibility of the supersonic gas jet fueling with the H-mode plasma edge, edge localized mode control, edge magnetohydrodynamic stability, radio frequency heating scenarios, and start-up scenarios with a fast plasma density ramp up. The diagnostic applications include localized impurity gas injections for transport and turbulence experiments and edge helium spectroscopy for edge T-e and n(e) profile measurements. Nozzle and gas injector design considerations are presented and four types of supersonic nozzles are discussed. The prototype SGI operates at room temperature. It is comprised of a small graphite Laval nozzle coupled to a modified commercial piezoelectric valve and mounted on a movable vacuum feedthrough. The critical properties of the SGI jet-low divergence, high density, and sharp boundary gradient, achievable only at M>1, have been demonstrated in a laboratory setup simulating NSTX edge conditions. The Mach numbers of about 4, the injection rate up to 10(22) particles/s, and the jet divergence half angle of 6degrees have been inferred from pulsed pressure measurements. (C) 2004 American Institute of Physics.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Soukhanovskii, VA (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
NR 16
TC 29
Z9 29
U1 0
U2 9
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 OCT
PY 2004
VL 75
IS 10
BP 4320
EP 4323
DI 10.1063/1.1787579
PN 2
PG 4
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900281
ER
PT J
AU Rudakov, DL
Boedo, JA
Moyer, RA
Stangeby, PC
McLean, A
Watkins, JG
AF Rudakov, DL
Boedo, JA
Moyer, RA
Stangeby, PC
McLean, A
Watkins, JG
TI Effect of electron temperature fluctuations on slowly swept Langmuir
probe measurements
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
ID DIII-D; BOUNDARY
AB Swept Langmuir probes are widely used to measure electron temperature (T-e) in laboratory plasmas by performing an exponential fit to the measured volt-ampere (I-V) characteristic. Often the probe voltage sweep frequency is much lower than the characteristic frequencies of the plasma fluctuations and a time-averaged I-V characteristic is used for the fit. We show by numerical modeling that in the presence of T-e fluctuations with frequencies well above the voltage sweep frequency this standard technique applied to a swept single probe tends to read higher than the actual time-averaged T-e provided no correlated plasma potential (V-p) fluctuations are present. In the presence of coupled T-e and V-p fluctuations a slowly swept single probe may read either higher or lower than the average T-e, depending on the relative amplitude and phase of the temperature and potential fluctuations. In contrast, swept double probe measurements of T-e are virtually unaffected by either T-e or V-p fluctuations. (C) 2004 American Institute of Physics.
C1 Univ Calif San Diego, Energy Res Ctr, La Jolla, CA 92093 USA.
Univ Toronto, Inst Aerosp Studies, Toronto, ON M3H 5T6, Canada.
Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Rudakov, DL (reprint author), Univ Calif San Diego, Energy Res Ctr, La Jolla, CA 92093 USA.
EM rudakov@fusion.gat.com
NR 10
TC 7
Z9 7
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 0034-6748
J9 REV SCI INSTRUM
JI Rev. Sci. Instrum.
PD OCT
PY 2004
VL 75
IS 10
BP 4334
EP 4337
DI 10.1063/1.1789623
PN 2
PG 4
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900285
ER
PT J
AU Raman, R
Kugel, HW
Gernhardt, R
Provost, T
Jarboe, TR
Soukhanovskii, V
AF Raman, R
Kugel, HW
Gernhardt, R
Provost, T
Jarboe, TR
Soukhanovskii, V
TI Fast neutral pressure gauges in NSTX
SO REVIEW OF SCIENTIFIC INSTRUMENTS
LA English
DT Article; Proceedings Paper
CT 15th Topical Conference on High-Temperature Plasma Diagnostics
CY APR 19-22, 2004
CL San Diego, CA
SP Amer Phys Soc, US DOE, Gen Atom
AB Successful operation in the National Spherical Torus Experiment (NSTX) of two prototype fast-response micro ionization gauges during plasma operations has motivated us to install five gauges at different toroidal and poloidal locations. These have a nitrogen equivalent lower pressure limit of a conventional ion gauge (similar to3x10(-10) Torr) and an upper pressure limit of 50 mTorr. On NSTX, they have a useful operating range of 1x10(-5) Torr-4 mTorr in deuterium. The modified Princeton Divertor Experiment-type Penning gauges are well suited for pressure measurements in the NSTX divertor where the toroidal field is relatively high. It is capable of operation over a pressure range of 1x10(-5)Torr-4 mTorr in deuterium. The gauge calibration has been stable for 2 years and the gauges have required no maintenance. Behind the NSTX outer divertor plates where the field is lower, an unshielded ion gauge of a new design has been installed. (C) 2004 American Institute of Physics.
C1 Univ Washington, Seattle, WA 98195 USA.
Princeton Plasma Phys Lab, Princeton, NJ 08540 USA.
Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Raman, R (reprint author), Univ Washington, Seattle, WA 98195 USA.
EM raman@aa.washington.edu
NR 9
TC 7
Z9 7
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 OCT
PY 2004
VL 75
IS 10
BP 4347
EP 4349
DI 10.1063/1.1787584
PN 2
PG 3
WC Instruments & Instrumentation; Physics, Applied
SC Instruments & Instrumentation; Physics
GA 866EF
UT WOS:000224755900289
ER
PT J
AU Zhou, Y
Matthaeus, WH
Dmitruk, P
AF Zhou, Y
Matthaeus, WH
Dmitruk, P
TI Colloquium: Magnetohydrodynamic turbulence and time scales in
astrophysical and space plasmas
SO REVIEWS OF MODERN PHYSICS
LA English
DT Review
ID MAGNETIC-FIELD CORRELATION; SOLAR-WIND FLUCTUATIONS; SHEAR ALFVEN
TURBULENCE; ISOTROPIC TURBULENCE; MHD-TURBULENCE; INERTIAL-RANGE;
INTERSTELLAR TURBULENCE; STATISTICAL-THEORY; ENERGY-TRANSFER;
LOW-FREQUENCY
AB Magnetohydrodynamic (MHD) turbulence has been employed as a physical model for a wide range of applications in astrophysical and space plasma physics. This Colloquium reviews fundamental aspects of MHD turbulence, including spectral energy transfer, nonlocality, and anisotropy, each of which is related to the multiplicity of dynamical time scales that may be present. These basic issues are discussed based on the concepts of sweeping of the small scales by a large-scale field, which in MHD occurs due to effects of counterpropagating waves, as well as the local straining processes that occur due to nonlinear couplings. These considerations give rise to various expected energy spectra, which are compared to both simulation results and relevant observations from space and astrophysical plasmas.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94511 USA.
Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA.
RP Lawrence Livermore Natl Lab, Livermore, CA 94511 USA.
EM yezhou@mail.llnl.gov; yswhm@bartol.udel.edu; pablo@bartol.udel.edu
NR 128
TC 118
Z9 118
U1 2
U2 10
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0034-6861
EI 1539-0756
J9 REV MOD PHYS
JI Rev. Mod. Phys.
PD OCT
PY 2004
VL 76
IS 4
BP 1015
EP 1035
DI 10.1103/RevModPhys.76.1015
PG 21
WC Physics, Multidisciplinary
SC Physics
GA 914RE
UT WOS:000228244500001
ER
PT J
AU Wilson, MD
McCormick, WP
Hinton, TG
AF Wilson, MD
McCormick, WP
Hinton, TG
TI The maximally exposed individual - Comparison of maximum likelihood
estimation of high quantiles to an extreme value estimate
SO RISK ANALYSIS
LA English
DT Article
DE body burden; bootstrap; cesium 137; dose; extreme value; maximum
likelihood; Monte Carlo
AB The dose to human and nonhuman individuals inflicted by anthropogenic radiation is an important issue in international and domestic policy. The Current paradigm for nonhuman populations asserts that if the dose to the maximally exposed individuals in a population is below a certain criterion (e.g., <10 mGy d(-1)) then the population is adequately protected. Currently, there is no consensus in the regulatory community as to the best statistical approach. Statistics, currently considered, include the maximum likelihood estimator for the 95th percentile of the sample mean and the sample maximum. Recently, the investigators have proposed the use of the maximum likelihood estimate of a very high quantile as an estimate of dose to the maximally exposed individual. In this study, we compare all of the above-mentioned statistics to an estimate based on extreme value theory. To determine and compare the bias and variance of these statistics, we use Monte, Carlo simulation techniques, in a procedure similar to a parametric bootstrap. Our results show that a statistic based on extreme value theory has the least bias of those considered here, but requires reliable estimates of the population size. We recommend establishing the criterion based on what would be considered acceptable if only a small percentage of the population exceeded the limit, and hence recommend using the maximum likelihood estimator of a high quantile in the case that reliable estimates of the population size are not available.
C1 Univ Georgia, Savannah River Ecol Lab, Athens, GA 30602 USA.
Univ Georgia, Dept Stat, Athens, GA 30602 USA.
RP Wilson, MD (reprint author), Univ Georgia, Savannah River Ecol Lab, Athens, GA 30602 USA.
EM wilson@srel.edu
OI Wilson, Machelle/0000-0003-1734-2755
NR 16
TC 4
Z9 4
U1 0
U2 0
PU WILEY-BLACKWELL
PI MALDEN
PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
SN 0272-4332
J9 RISK ANAL
JI Risk Anal.
PD OCT
PY 2004
VL 24
IS 5
BP 1143
EP 1151
DI 10.1111/j.0272-4332.2004.00515.x
PG 9
WC Public, Environmental & Occupational Health; Mathematics,
Interdisciplinary Applications; Social Sciences, Mathematical Methods
SC Public, Environmental & Occupational Health; Mathematics; Mathematical
Methods In Social Sciences
GA 875ML
UT WOS:000225424400008
PM 15563284
ER
PT J
AU Maddalena, RL
McKone, TE
Sohn, MD
AF Maddalena, RL
McKone, TE
Sohn, MD
TI Standardized approach for developing probabilistic exposure factor
distributions
SO RISK ANALYSIS
LA English
DT Article
DE body weight; classification and regression tree (CART); exposure
duration; probabilistic risk assessment; probability density function
(PDF)
ID BODY-WEIGHT; LOGNORMAL DISTRIBUTIONS; RISK ASSESSMENT; UNITED-STATES;
SENSITIVITY; UNCERTAINTY; POLLUTANTS; EMISSIONS; RESIDENCE; TIME
AB The effectiveness of a probabilistic risk assessment (PRA) depends on the quality and relevance of the output from exposure and risk models, which, in turn, depends on the critical inputs to the assessment. These critical inputs are often in the form of probabilistic exposure factor distributions that are derived for the given risk scenario. Deriving probabilistic distributions for model inputs can be time consuming and subjective.,The absence of a standard approach for developing these distributions can result in PRAs that are inconsistent and difficult to review by regulatory agencies. We present an approach that reduces subjectivity in the distribution development process without limiting the flexibility needed to prepare relevant PRAs. The approach requires two steps. First, we analyze data pooled at a population scale to (i) identify the most robust demographic descriptors within the population for a given exposure factor, (ii) partition the data into subsets based on these variables, and (iii) construct archetypal distributions for each subpopulation. Second, we sample from these archetypal distributions according to site- or scenario-specific conditions to simulate exposure factor values and use these values to construct the scenario-specific input distribution. The archetypal distributions developed through Step I provide a consistent basis for developing scenario-specific distributions so risk assessors will not have to repeatedly collect and analyze raw data for each new assessment. We demonstrate the approach for two commonly used exposure factors-body weight (BW) and exposure duration (ED)-using data that are representative of the U.S. population. For these factors we provide a first set of subpopulation-based archetypal distributions and demonstrate methods for using these distributions to construct relevant scenario-specific probabilistic exposure factor distributions.
C1 Lawrence Berkeley Natl Lab, Indoor Environm Dept, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Sch Publ Hlth, Berkeley, CA USA.
RP Maddalena, RL (reprint author), Lawrence Berkeley Natl Lab, Indoor Environm Dept, 1 Cyclotron Rd,Mail Stop 90-3058, Berkeley, CA 94720 USA.
EM rlmaddalena@lbl.gov
NR 45
TC 5
Z9 5
U1 0
U2 3
PU BLACKWELL PUBLISHERS
PI MALDEN
PA 350 MAIN STREET, STE 6, MALDEN, MA 02148 USA
SN 0272-4332
J9 RISK ANAL
JI Risk Anal.
PD OCT
PY 2004
VL 24
IS 5
BP 1185
EP 1199
DI 10.1111/j.0272-4332.2004.00518.x
PG 15
WC Public, Environmental & Occupational Health; Mathematics,
Interdisciplinary Applications; Social Sciences, Mathematical Methods
SC Public, Environmental & Occupational Health; Mathematics; Mathematical
Methods In Social Sciences
GA 875ML
UT WOS:000225424400011
PM 15563287
ER
PT J
AU Armbrust, EV
Berges, JA
Bowler, C
Green, BR
Martinez, D
Putnam, NH
Zhou, SG
Allen, AE
Apt, KE
Bechner, M
Brzezinski, MA
Chaal, BK
Chiovitti, A
Davis, AK
Demarest, MS
Detter, JC
Glavina, T
Goodstein, D
Hadi, MZ
Hellsten, U
Hildebrand, M
Jenkins, BD
Jurka, J
Kapitonov, VV
Kroger, N
Lau, WWY
Lane, TW
Larimer, FW
Lippmeier, JC
Lucas, S
Medina, M
Montsant, A
Obornik, M
Parker, MS
Palenik, B
Pazour, GJ
Richardson, PM
Rynearson, TA
Saito, MA
Schwartz, DC
Thamatrakoln, K
Valentin, K
Vardi, A
Wilkerson, FP
Rokhsar, DS
AF Armbrust, EV
Berges, JA
Bowler, C
Green, BR
Martinez, D
Putnam, NH
Zhou, SG
Allen, AE
Apt, KE
Bechner, M
Brzezinski, MA
Chaal, BK
Chiovitti, A
Davis, AK
Demarest, MS
Detter, JC
Glavina, T
Goodstein, D
Hadi, MZ
Hellsten, U
Hildebrand, M
Jenkins, BD
Jurka, J
Kapitonov, VV
Kroger, N
Lau, WWY
Lane, TW
Larimer, FW
Lippmeier, JC
Lucas, S
Medina, M
Montsant, A
Obornik, M
Parker, MS
Palenik, B
Pazour, GJ
Richardson, PM
Rynearson, TA
Saito, MA
Schwartz, DC
Thamatrakoln, K
Valentin, K
Vardi, A
Wilkerson, FP
Rokhsar, DS
TI The genome of the diatom Thalassiosira pseudonana: Ecology, evolution,
and metabolism
SO SCIENCE
LA English
DT Article
ID PLASMODIUM-FALCIPARUM; MARINE DIATOMS; GENE-TRANSFER; WORLD OCEAN;
NUCLEUS; SILICA; PHYTOPLANKTON; POLYAMINES; PROTEINS; FAMILY
AB Diatoms are unicellular algae with plastids acquired by secondary endosymbiosis. They are responsible for similar to20% of global carbon fixation. We report the 34 million-base pair draft nuclear genome of the marine diatom Thalassiosira pseudonana and its 129 thousand-base pair ptastid and 44 thousand-base pair mitochondrial genomes. Sequence and optical restriction mapping revealed 24 diploid nuclear chromosomes. We identified novel genes for silicic acid transport and formation of silica-based cell walls, high-affinity iron uptake, biosynthetic enzymes for several types of polyunsaturated fatty acids, use of a range of nitrogenous compounds, and a complete urea cycle, all attributes that allow diatoms to prosper in aquatic environments.
C1 Univ Washington, Sch Oceanog, Seattle, WA 98195 USA.
Univ Wisconsin, Dept Biol Sci, Milwaukee, WI 53201 USA.
Stn Zool, Plant Mol Biol Lab, I-80121 Naples, Italy.
Ecole Normale Super, Dept Biol, F-75230 Paris, France.
Univ British Columbia, Dept Bot, Vancouver, BC V6T 1Z4, Canada.
Joint Genome Inst, Dept Energy, Walnut Creek, CA 94598 USA.
Univ Wisconsin, Dept Genet, Madison, WI 53706 USA.
Univ Wisconsin, Dept Chem, Madison, WI 53706 USA.
Princeton Univ, Dept Geosci, Princeton, NJ 08540 USA.
Martek Biosci Corp, Columbia, MD 21045 USA.
Univ Calif Santa Barbara, Dept Ecol Evolut & Marine Biol, Santa Barbara, CA 93106 USA.
Univ Calif Santa Barbara, Inst Marine Sci, Santa Barbara, CA 93106 USA.
Univ Melbourne, Sch Bot, Melbourne, Vic 3010, Australia.
Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA.
Sandia Natl Labs, Lockheed Martin Corp, Livermore, CA 94551 USA.
Univ Calif Santa Cruz, Ocean Sci Dept, Santa Cruz, CA 95064 USA.
Genet Informat Res Inst, Mountain View, CA 94043 USA.
Univ Regensburg, Lehrstuhl Biochem 1, D-93053 Regensburg, Germany.
Sandia Natl Labs, Biosyst Res Dept, Livermore, CA 94551 USA.
Oak Ridge Natl Lab, Genome Anal Grp, Oak Ridge, TN 37831 USA.
Univ Hull, Dept Biol Sci, Kingston Upon Hull HU6 7RX, N Humberside, England.
Univ Massachusetts, Sch Med, Program Mol Med, Worcester, MA 01605 USA.
Woods Hole Oceanog Inst, Dept Marine Chem & Geochem, Woods Hole, MA 02543 USA.
Alfred Wegener Inst Polar & Marine Res, D-27570 Bremerhaven, Germany.
San Francisco State Univ, Romberg Tiburon Ctr, Tiburon, CA 94920 USA.
Univ Calif Berkeley, Ctr Integrat Genom, Berkeley, CA 94720 USA.
RP Armbrust, EV (reprint author), Univ Washington, Sch Oceanog, Seattle, WA 98195 USA.
EM armbrust@ocean.washington.edu; dsrokhsar@lbl.gov
RI Putnam, Nicholas/B-9968-2008; Berges, John /D-9520-2012; Zhou,
Shiguo/B-3832-2011; Valentin, Klaus/G-5862-2014; Obornik,
Miroslav/G-9350-2014;
OI Putnam, Nicholas/0000-0002-1315-782X; Berges, John /0000-0002-3124-4783;
Zhou, Shiguo/0000-0001-7421-2506; Valentin, Klaus/0000-0001-7401-9423;
Lane, Todd/0000-0002-5816-2649; Pazour, Gregory/0000-0002-6285-8796
NR 48
TC 995
Z9 1063
U1 32
U2 378
PU AMER ASSOC ADVANCEMENT SCIENCE
PI WASHINGTON
PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA
SN 0036-8075
J9 SCIENCE
JI Science
PD OCT 1
PY 2004
VL 306
IS 5693
BP 79
EP 86
DI 10.1126/science.1101156
PG 8
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 859YJ
UT WOS:000224304000039
PM 15459382
ER
PT J
AU Yang, NYC
Headley, TJ
Kelly, JJ
Hruby, JM
AF Yang, NYC
Headley, TJ
Kelly, JJ
Hruby, JM
TI Metallurgy of high strength Ni-Mn microsystems fabricated by
electrodeposition
SO SCRIPTA MATERIALIA
LA English
DT Article
DE electroplating; nickel alloys; hardness; twinning; texture
ID BATH
AB Electrodeposition is used for fabricating micron-size, high aspect ratio features. Ni-0.5wt%Mn electrodeposits possess high strength and strong texture. The high strength is attributed to twinned, submicrometer grains. Correlation of hardness, texture, microstructure, and alloy composition was established. Dimensional variations introduce composition variations that influence local metallurgical properties. (C) 2003 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 Sandia Natl Labs, Livermore, CA 94550 USA.
RP Yang, NYC (reprint author), Sandia Natl Labs, Org 8723,7011 East Ave, Livermore, CA 94550 USA.
EM nyyang@sandia.gov
NR 20
TC 25
Z9 29
U1 1
U2 14
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 OCT
PY 2004
VL 51
IS 8
BP 761
EP 766
DI 10.1016/j.scriptamat.2003.11.001
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 847JW
UT WOS:000223389500003
ER
PT J
AU Zhu, YT
Lowe, TC
Langdon, TG
AF Zhu, YT
Lowe, TC
Langdon, TG
TI Performance and applications of nanostructured materials produced by
severe plastic deformation
SO SCRIPTA MATERIALIA
LA English
DT Article
DE applications; manufacturing; nanostructured materials; severe plastic
deformation
ID STRAIN RATE SUPERPLASTICITY; ULTRAFINE-GRAINED TITANIUM; COMMERCIAL
ALUMINUM-ALLOYS; BONDING ARB PROCESS; MICROSTRUCTURAL EVOLUTION;
NANOCRYSTALLINE MATERIALS; AL-ALLOY; THERMAL-STABILITY; METALS;
REFINEMENT
AB Nanostructured materials produced by severe plastic deformation can be tailored to have both superior performance and superior properties. These materials are attractive for use in a range of applications from biomedical to aerospace industries. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 Los Alamos Natl Lab, Div Technol, Los Alamos, NM 87545 USA.
Univ So Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 USA.
Univ So Calif, Dept Mat Sci, Los Angeles, CA 90089 USA.
RP Zhu, YT (reprint author), Los Alamos Natl Lab, Div Technol, MS G755, Los Alamos, NM 87545 USA.
EM yzhu@lanl.gov
RI Langdon, Terence/B-1487-2008; Zhu, Yuntian/B-3021-2008
OI Zhu, Yuntian/0000-0002-5961-7422
NR 46
TC 175
Z9 182
U1 5
U2 36
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 OCT
PY 2004
VL 51
IS 8
BP 825
EP 830
DI 10.1016/j.scriptamat.2004.05.006
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 847JW
UT WOS:000223389500014
ER
PT J
AU Godfrey, A
Hughes, DA
AF Godfrey, A
Hughes, DA
TI Physical parameters linking deformation microstructures over a wide
range of length scale
SO SCRIPTA MATERIALIA
LA English
DT Article
DE dislocation boundaries; deformation structure; TEM; scaling
ID DISLOCATION BOUNDARIES; ORIENTATION; MISORIENTATIONS; ALUMINUM; CRYSTAL;
METALS; WORK
AB Plastic deformation leads in many metals to a continuous refinement of the microstructure. An analysis of certain key microstructural parameters reveals a scaling behavior, reflecting a continuity of the basic processes underlying plastic deformation over a very wide range of strain, and hence for structures from the micro- to nano-scale dimensions. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
C1 Tsing Hua Univ, Dept Mat Sci & Engn, Beijing 100084, Peoples R China.
Sandia Natl Labs, Livermore, CA 94551 USA.
RP Godfrey, A (reprint author), Tsing Hua Univ, Dept Mat Sci & Engn, Beijing 100084, Peoples R China.
EM awgodfrey@mail.tsinghua.edu.cn
RI Godfrey, Andrew/G-4458-2010
OI Godfrey, Andrew/0000-0002-5496-0424
NR 25
TC 23
Z9 24
U1 0
U2 7
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 OCT
PY 2004
VL 51
IS 8
BP 831
EP 836
DI 10.1016/j.scriptamat.2004.06.019
PG 6
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 847JW
UT WOS:000223389500015
ER
PT J
AU Carlsson, B
Moller, K
Kohl, M
Heck, M
Brunold, S
Frei, U
Marechal, JC
Jorgensen, G
AF Carlsson, B
Moller, K
Kohl, M
Heck, M
Brunold, S
Frei, U
Marechal, JC
Jorgensen, G
TI The applicability of accelerated life testing for assessment of service
life of solar thermal components
SO SOLAR ENERGY MATERIALS AND SOLAR CELLS
LA English
DT Article; Proceedings Paper
CT World Congress of the International-Solar-Energy-Society
CY JUN 14-19, 2003
CL Gothenburg, SWEDEN
SP Int Solar Energy Soc
DE solar thermal materials; durability; service life prediction;
accelerated testing; selective solar absorber surface; polymeric glazing
material
AB To achieve successful commercialisation of new advanced windows and solar facade components for buildings, the durability of these need to be demonstrated prior to installation by use of reliable and well-accepted test methods. In Task 27 Performance of Solar Facade Components of the IEA Solar Heating and Cooling Programme work has therefore been undertaken with the objective to develop a general methodology for durability test procedures and service lifetime prediction methods adaptable to the wide variety of advanced optical materials and components used in energy efficient solar thermal and buildings applications. As the result of this work a general methodology has been developed. The proposed methodology includes three steps: (a) initial risk analysis of potential failure modes, (b) screening testing/ analysis for service life prediction and microclimate characterisation, and (c) service life prediction involving mathematical modelling and life testing.
The applicability of the working scheme to be employed in the development of durability test procedures has been analysed for selective solar absorber surfaces and polymeric glazing materials in flat plate solar collectors. The examples show the great applicability of the general methodology for accelerated life testing. This will allow much shorter development cycle times for new products and will allow improvements to be identified and readily incorporated in new products prior to market introduction. (C) 2004 Elsevier B.V. All rights reserved.
C1 SP Swedish Natl Testing & Res Inst, SE-50115 Boras, Sweden.
Fraunhofer Inst Solar Energy Syst, D-79110 Freiburg, Germany.
Hsch Rapperswil HSR, Inst Solartech, CH-8640 Rapperswil, Switzerland.
Ctr Sci & Tech Batiment, F-38400 St Martin Dheres, France.
Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Carlsson, B (reprint author), SP Swedish Natl Testing & Res Inst, POB 857, SE-50115 Boras, Sweden.
EM bo.carlsson@sp.se
NR 16
TC 11
Z9 11
U1 0
U2 14
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 OCT
PY 2004
VL 84
IS 1-4
BP 255
EP 274
DI 10.1016/j.solmat.2004.01.046
PG 20
WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied
SC Energy & Fuels; Materials Science; Physics
GA 853IJ
UT WOS:000223820200019
ER
PT J
AU Burakovsky, L
Preston, DL
Wang, Y
AF Burakovsky, L
Preston, DL
Wang, Y
TI Cold shear modulus and Gruneisen parameter at all densities
SO SOLID STATE COMMUNICATIONS
LA English
DT Article
DE density; Gruneisen; pressure; ultrahigh
ID ELASTIC-CONSTANTS; HIGH-PRESSURE; DEBYE-TEMPERATURE; LOWER MANTLE;
DEPENDENCE; METALS; 1ST-PRINCIPLES; DIFFUSION; ELEMENTS; SOLIDS
AB We derive the relation - 1/2 d In G/d In V- 1/6 = gamma for the volume dependence of the cold (T= 0) shear modulus, G, where gamma is the cold Gruneisen parameter given by the formula gamma = - 1/2 d ln(B - 2/3tP)/d In V - 1/6, B and P being the cold bulk modulus and pressure, respectively. For constant t, this formula reduces to the known Slater, Dugdale-MacDonald, and Vashchenko-Zubarev relations for t= 0, 1, and 2, respectively. However, as we demonstrate, in the case of a real solid under pressure, t is a variable such that t-5/2 as P --> infinity. This formula is the basis for the analytic model of the cold Gruneisen parameter, gamma(V) = 1/2 + gamma, V-1/3 + gamma(2)V(q), q > 1, developed previously by two of the authors, and the corresponding analytic model of the cold shear modulus. The model of the shear modulus is compared to electronic-structure calculations and experimental data on rare-gas solids, iron, and cobalt, and good agreement is found in all cases. (C) 2004 Elsevier Ltd. All rights reserved.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Penn State Univ, University Pk, PA 16802 USA.
RP Burakovsky, L (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM burakov@lanl.gov; dean@lanl.gov; yuw3@psu.edu
RI Wang, Yi/D-1032-2013
NR 40
TC 9
Z9 9
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 OCT
PY 2004
VL 132
IS 3-4
BP 151
EP 156
DI 10.1016/j.ssc.2004.07.066
PG 6
WC Physics, Condensed Matter
SC Physics
GA 858JG
UT WOS:000224187500002
ER
PT J
AU Hasanuzzaman, M
Islam, SK
Tolbert, LM
Alam, MT
AF Hasanuzzaman, M
Islam, SK
Tolbert, LM
Alam, MT
TI Temperature dependency of MOSFET device characteristics in 4H-and
6H-silicon carbide (SiC)
SO SOLID-STATE ELECTRONICS
LA English
DT Article; Proceedings Paper
CT International Semiconductor Device Reseaech Symposium (ISDRS 03)
CY DEC 10-12, 2003
CL Washington, DC
SP IEEE Elect Device Soc, Univ Maryland, Natl Sci Fdn, Army Res Off, Army Res Lab
DE high temperature MOSFET; silicon carbide; temperature variation effect
ID INTEGRATED-CIRCUITS
AB The advantages of silicon carbide (SiC) over silicon are significant for high power and high temperature device applications. An analytical model for a lateral MOSFET that includes the effects of temperature variation in 6H-SiC poly-type has been developed. The model has also been used to study the device behavior in 4H-SiC at high ambient temperature. The model includes the effects of temperature on the threshold voltage, the carrier mobility, the body leakage current, and the drain and source contact region resistances. The MOSFET output characteristics and parameter values have been compared with previously measured experimental data. A good agreement between the analytical model and the experimental data has been observed. 6H-SiC material system provides enhanced device performance compared to 4H-SiC counterpart for lateral MOSFET. (C) 2004 Elsevier Ltd. All rights reserved.
C1 Univ Tennessee, Dept Elect & Comp Engn, Knoxville, TN 37996 USA.
Oak Ridge Natl Lab, Natl Transportat Res Ctr, Oak Ridge, TN 37831 USA.
RP Hasanuzzaman, M (reprint author), Univ Tennessee, Dept Elect & Comp Engn, Knoxville, TN 37996 USA.
EM mhasanuz@utk.edu
OI Tolbert, Leon/0000-0002-7285-609X
NR 13
TC 10
Z9 11
U1 0
U2 7
PU PERGAMON-ELSEVIER SCIENCE LTD
PI OXFORD
PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
SN 0038-1101
J9 SOLID STATE ELECTRON
JI Solid-State Electron.
PD OCT-NOV
PY 2004
VL 48
IS 10-11
BP 1877
EP 1881
DI 10.1016/j.sse.2004.05.029
PG 5
WC Engineering, Electrical & Electronic; Physics, Applied; Physics,
Condensed Matter
SC Engineering; Physics
GA 853EO
UT WOS:000223809700035
ER
PT J
AU Trebosc, J
Amoureux, JP
Delevoye, L
Wiench, JW
Pruski, M
AF Trebosc, J
Amoureux, JP
Delevoye, L
Wiench, JW
Pruski, M
TI Frequency-selective measurement of heteronuclear scalar couplings in
solid-state NMR
SO SOLID STATE SCIENCES
LA English
DT Article
ID QUANTITATIVE MEASUREMENT; INEPT EXPERIMENTS; HYDROGEN-BOND;
SPECTROSCOPY; SPECTRA; HOMONUCLEAR; CONNECTIVITIES; STRENGTHS;
CONSTANTS; HISTIDINE
AB A new technique is proposed for selective measurement of heteronuclear scalar J couplings between spins in solids. The method, referred to as FS-J-RES (Frequency-Selective-J-RESolved) NMR, uses frequency-selective irradiation at the I (nonobserved) spin frequency to target a specific pair of spins in a multispin system. In addition, the technique provides direct information about the number of identical I spins chemically bonded to the observed S nucleus. A reference spectrum, recorded without irradiating the I spins, accounts for transverse relaxation, pulse imperfections and dephasing due to homonuclear J couplings between S nuclei, which can be simultaneously measured with this method. (C) 2004 Elsevier SAS. All rights reserved.
C1 Univ Lille 1, LCPS, F-59652 Villeneuve Dascq, France.
Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
RP Amoureux, JP (reprint author), Univ Lille 1, LCPS, F-59652 Villeneuve Dascq, France.
EM jean-paul.amoureux@univ-lille1.fr
RI Delevoye, Laurent/B-9854-2011;
OI Delevoye, Laurent/0000-0003-3146-9365
NR 31
TC 12
Z9 12
U1 1
U2 9
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1293-2558
J9 SOLID STATE SCI
JI Solid State Sci.
PD OCT
PY 2004
VL 6
IS 10
BP 1089
EP 1095
DI 10.1016/j.solidstatesciences.2004.04.019
PG 7
WC Chemistry, Inorganic & Nuclear; Chemistry, Physical; Physics, Condensed
Matter
SC Chemistry; Physics
GA 867VF
UT WOS:000224869900007
ER
PT J
AU Stuart, SJ
Li, Y
Kum, O
Mintmire, JW
Voter, AF
AF Stuart, SJ
Li, Y
Kum, O
Mintmire, JW
Voter, AF
TI Reactive bond-order simulations using both spatial and temporal
approaches to parallelism
SO STRUCTURAL CHEMISTRY
LA English
DT Article
DE parallel molecular dynamics; parallel replica dynamics; pyrolysis;
bond-order potential
ID MOLECULAR-DYNAMICS SIMULATIONS; SYMPLECTIC INTEGRATORS; INFREQUENT
EVENTS; TIME-SCALE; DIAMOND; HYDROCARBONS; SYSTEMS; ENERGY; CARBON;
MODEL
AB We describe two different approaches to exploiting parallel computing architecture that have been used successfully for reactive molecular simulation using bond-order potentials. These potentials are based on the Tersoff bond-order formalism, and allow accurate treatement of covalent bonding reactions in the framework of a classical potential. They include both Brenner's reactive empirical bond order (REBO) potential and our adaptive intermolecular version of this potential (AIREBO). Traditional spatial and atom-based parallel decompositioon techniques have been employed in the RMD-CE program developed for parallel molecular dynamics simulations with a variety of reactive potentials. Key features of this implementation, including the object-oriented approach and novel algorithms for the integrator and neighbor lists, are discussed. The resulting code provides efficient scaling down to system sizes of 400 atoms per processor, and has been applied successfully to systems of as many as half a million atoms. For smaller systems, the parallel replica dynamics algorithm has been successfully applied to take advantage of parallelism in the time domain for rare-event systems. This approach takes advantage of the independence of different parts of a dynamics trajectory, and provides excellent parallel efficiencies for systems as small as tens of atoms, where other parallel simulation techniques are not applicable. This technique has been used to model the pyrolysis of hexadecane on the microsecond timescale, at more realistic temperatures than are achievable with other simulation methods.
C1 Clemson Univ, Dept Chem, Clemson, SC 29634 USA.
Oklahoma State Univ, Dept Phys, Stillwater, OK 74078 USA.
Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Stuart, SJ (reprint author), Clemson Univ, Dept Chem, Clemson, SC 29634 USA.
EM ss@clemson.edu
RI Kum, Oyeon/A-4962-2008; Stuart, Steven/H-1111-2012;
OI Mintmire, John/0000-0002-6551-0349
NR 29
TC 8
Z9 8
U1 1
U2 4
PU KLUWER ACADEMIC/PLENUM PUBL
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1040-0400
J9 STRUCT CHEM
JI Struct. Chem.
PD OCT
PY 2004
VL 15
IS 5
BP 479
EP 486
DI 10.1023/B:STUC.0000037905.54615.b0
PG 8
WC Chemistry, Multidisciplinary; Chemistry, Physical; Crystallography
SC Chemistry; Crystallography
GA 846QV
UT WOS:000223331800019
ER
PT J
AU Qasim, MM
Furey, J
Fredrickson, HL
Szecsody, J
McGrath, C
Bajpai, R
AF Qasim, MM
Furey, J
Fredrickson, HL
Szecsody, J
McGrath, C
Bajpai, R
TI Semiempirical predictions of chemical degradation reaction mechanisms of
CL-20 as related to molecular structure
SO STRUCTURAL CHEMISTRY
LA English
DT Article
DE CL-20; spectroscopy; free radicals; modes of degradation
ID RDX
AB Combining computer chemistry calculation with experimental verification is useful both in proving concepts and what is chemically possible. Computational predictions, using MOPAC quantum mechanical and classical force field mechanics, were used to investigate most likely first-tier intermediates of cyclic and cage cyclic nitramines-comparing bond lengths and angles, heats of formation, steric energy, dipole moments, solvent accessibility and electrostatic potential surfaces, partial charges, and Highest Occupied Molecular Orbitals/Lowest Unoccupied Molecular Orbitals (HOMO/LUMO) energies. Two competing modes of degradation are summarized: through addition of hydroxide ions and through addition of photo-induced free radicals. UV/VIS measured concentrations and followed the course of reactions. FTIR followed CL-20 degradation through alkali hydrolysis, where FTIR measurements verified theoretical predictions.
C1 USA, ERDC, Vicksburg, MS 39180 USA.
CSC, Vicksburg, MS USA.
Pacific NW Natl Lab, Richland, WA USA.
Univ Missouri, Columbia, MO USA.
RP Qasim, MM (reprint author), USA, ERDC, Vicksburg, MS 39180 USA.
EM Mohammad.M.Qasim@erdc.usace.army.mil
NR 9
TC 8
Z9 9
U1 1
U2 10
PU KLUWER ACADEMIC/PLENUM PUBL
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1040-0400
J9 STRUCT CHEM
JI Struct. Chem.
PD OCT
PY 2004
VL 15
IS 5
BP 493
EP 499
DI 10.1023/B:STUC.0000037907.27898.f5
PG 7
WC Chemistry, Multidisciplinary; Chemistry, Physical; Crystallography
SC Chemistry; Crystallography
GA 846QV
UT WOS:000223331800021
ER
PT J
AU Janda, I
Devedjiev, Y
Derewenda, U
Dauter, Z
Bielnicki, J
Cooper, DR
Graf, PCF
Joachimiak, A
Jakob, U
Derewenda, ZS
AF Janda, I
Devedjiev, Y
Derewenda, U
Dauter, Z
Bielnicki, J
Cooper, DR
Graf, PCF
Joachimiak, A
Jakob, U
Derewenda, ZS
TI The crystal structure of the reduced, Zn2+-bound form of the B. subtilis
Hsp33 chaperone and its implications for the activation mechanism
SO STRUCTURE
LA English
DT Article
ID HEAT-SHOCK-PROTEIN; MOLECULAR CHAPERONE; ANGSTROM RESOLUTION; REDOX
SWITCH; CRYSTALLIZATION; DOMAIN; REFINEMENT
AB The bacterial heat shock protein Hsp33 is a redox-regulated chaperone activated by oxidative stress. In response to oxidation, four cysteines within a Zn2+ binding C-terminal domain form two disulfide bonds with concomitant release of the metal. This leads to the formation of the biologically active Hsp33 dimer. The crystal structure of the N-terminal domain of the E. coli protein has been reported, but neither the structure of the Zn2+ binding motif nor the nature of its regulatory interaction with the rest of the protein are known. Here we report the crystal structure of the full-length B. subtilis Hsp33 in the reduced form. The structure of the N-terminal, dimerization domain is similar to that of the E. coli protein, although there is no domain swapping. The Zn2+ binding domain is clearly resolved showing the details of the tetrahedral coordination of Zn2+ by four thiolates. We propose a structure-based activation pathway for Hsp33.
C1 Univ Virginia, Dept Mol Physiol & Biol Phys, Charlottesville, VA 22908 USA.
Brookhaven Natl Lab, NCI, Macromol Crystallog Lab, Synchrotron Radiat Res Sect, Upton, NY 11973 USA.
Univ Michigan, Dept Mol Cellular & Dev Biol, Ann Arbor, MI 48109 USA.
Argonne Natl Lab, Biosci Div, Argonne, IL 60439 USA.
Argonne Natl Lab, Struct Biol Ctr, Argonne, IL 60439 USA.
RP Derewenda, ZS (reprint author), Univ Virginia, Dept Mol Physiol & Biol Phys, Charlottesville, VA 22908 USA.
EM zsd4n@virginia.edu
OI Graf, Paul/0000-0002-1094-7498
FU NIGMS NIH HHS [GM065318, GM62615, P50 GM062414, R01 GM062615, R01
GM065318]
NR 29
TC 48
Z9 49
U1 0
U2 3
PU CELL PRESS
PI CAMBRIDGE
PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA
SN 0969-2126
EI 1878-4186
J9 STRUCTURE
JI Structure
PD OCT
PY 2004
VL 12
IS 10
BP 1901
EP 1907
DI 10.1016/j.str.2004.08.003
PG 7
WC Biochemistry & Molecular Biology; Biophysics; Cell Biology
SC Biochemistry & Molecular Biology; Biophysics; Cell Biology
GA 863DL
UT WOS:000224540800016
PM 15458638
ER
PT J
AU Li, YA
Hyman, JM
Choi, WY
AF Li, YA
Hyman, JM
Choi, WY
TI A numerical study of the exact evolution equations for surface waves in
water of finite depth
SO STUDIES IN APPLIED MATHEMATICS
LA English
DT Article
ID 2 SOLITARY WAVES; GRAVITY-WAVES; COLLISIONS; CIRCULATION; COMPUTATION;
DERIVATION; MOMENTUM; ENERGY; MASS
AB We describe a pseudo-spectral numerical method to solve the systems of one-dimensional evolution equations for free surface waves in a homogeneous layer of an ideal fluid. We use the method to solve a system of one-dimensional integro-differential equations, first proposed by Ovsjannikov and later derived by Dyachenko, Zakharov, and Kuznetsov, to simulate the exact evolution of nonlinear free surface waves governed by the two-dimensional Euler equations. These equations are written in the transformed plane where the free surface is mapped onto a flat surface and do not require the common assumption that the waves have small amplitude used in deriving the weakly nonlinear Korteweg-de Vries and Boussinesq long-wave equations. We compare the solution of the exact reduced equations with these weakly nonlinear long-wave models and with the nonlinear long-wave equations of Su and Gardner that do not assume the waves have small amplitude. The Su and Gardner solutions are in remarkably close agreement with the exact Euler solutions for large amplitude solitary wave interactions while the interactions of low-amplitude solitary waves of all four models agree. The simulations demonstrate that our method is an efficient and accurate approach to integrate all of these equations and conserves the mass, momentum, and energy of the Euler equations over very long simulations.
C1 Univ Michigan, Dept Naval Architecture & Marine Engn, Ann Arbor, MI 48109 USA.
Los Alamos Natl Labs, Los Alamos, NM USA.
RP Univ Michigan, Dept Naval Architecture & Marine Engn, Ann Arbor, MI 48109 USA.
EM wychoi@engin.umich.edu
NR 26
TC 27
Z9 27
U1 0
U2 0
PU WILEY-BLACKWELL
PI HOBOKEN
PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA
SN 0022-2526
EI 1467-9590
J9 STUD APPL MATH
JI Stud. Appl. Math.
PD OCT
PY 2004
VL 113
IS 3
BP 303
EP 324
PG 22
WC Mathematics, Applied
SC Mathematics
GA 851SW
UT WOS:000223706700004
ER
PT J
AU Berenov, A
Serquis, A
Liao, XZ
Zhu, YT
Peterson, DE
Bugoslavsky, Y
Yates, KA
Blamire, MG
Cohen, LF
MacManus-Driscoll, JL
AF Berenov, A
Serquis, A
Liao, XZ
Zhu, YT
Peterson, DE
Bugoslavsky, Y
Yates, KA
Blamire, MG
Cohen, LF
MacManus-Driscoll, JL
TI Enhancement of critical current density in low level Al-doped MgB2
SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY
LA English
DT Article
ID MAGNESIUM DIBORIDE; SUPERCONDUCTIVITY; PRESSURE; FILMS
AB Two sets of MgB2 samples doped with up to 5 at.% of Al were prepared in different laboratories using different procedures. Decreases in the 'a' and 'c' lattice parameters were observed with Al doping, confirming Al substitution onto the Mg site. The critical temperature (T-c) remained largely unchanged with Al doping. For 1-2.5 at.% doping, at 20 K the in-field critical current densities (J(c)s) were enhanced, particularly at lower fields. At 5 K, the in-field J(c) was markedly improved; for example at 5 T J(c) was enhanced by a factor of 20 for a doping level of 1 at. % Al. The 1 mproved J(c)s correlate with increased sample resistivity, which is indicative of an increase in the upper critical field, H-c2, through alloying.
C1 Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2AZ, England.
Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England.
Los Alamos Natl Lab, Superconduct Technol Ctr, Los Alamos, NM 87545 USA.
RP Berenov, A (reprint author), Univ London Imperial Coll Sci Technol & Med, Dept Mat, London SW7 2AZ, England.
RI Zhu, Yuntian/B-3021-2008; Liao, Xiaozhou/B-3168-2009; Berenov,
Andrey/A-3020-2011; Serquis, Adriana/L-6554-2015
OI Zhu, Yuntian/0000-0002-5961-7422; Liao, Xiaozhou/0000-0001-8565-1758;
Serquis, Adriana/0000-0003-1499-4782
NR 26
TC 39
Z9 42
U1 1
U2 10
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0953-2048
J9 SUPERCOND SCI TECH
JI Supercond. Sci. Technol.
PD OCT
PY 2004
VL 17
IS 10
BP 1093
EP 1096
AR PII S0953-2048(04)79489-0
DI 10.1088/0953-2048/17/10/001
PG 4
WC Physics, Applied; Physics, Condensed Matter
SC Physics
GA 869IH
UT WOS:000224976100006
ER
PT J
AU Zhang, Y
Feenstra, R
Thompson, JR
Gapud, AA
Aytug, T
Martin, PM
Christen, DK
AF Zhang, Y
Feenstra, R
Thompson, JR
Gapud, AA
Aytug, T
Martin, PM
Christen, DK
TI High critical current density YBa2CU7-delta thin films fabricated by ex
situ processing at low pressures
SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY
LA English
DT Article
ID PRECURSOR FILMS; BAF2; CONDUCTORS; CU
AB There is interest in probing the feasibility and possible advantages of making uniform and cost-effective long-length coated conductors through a low-pressure processing approach. The low-pressure approach, eliminating the boundary layer and gas flow considerations, consumes much less of the processing gases and offers the possibility of improved uniformity and faster growth rate of superconducting films. Here, we have fabricated YBa2CU3O7-delta (YBCO) epitaxial films of thickness 0.1-1.0 mum on SrTiO3 single crystal substrates using ex situ post-deposition processing of co-evaporated Y, BaF2 and Cu precursors in a controlled low-pressure gas mixture of oxygen and water vapour. Partial pressures of oxygen (Po-2) and water vapour (P-H2O) as low as 10 and 0.1 mTorr, respectively, were used. X-ray diffraction and scanning electron microscopy inspection were conducted for structure characterization of the films. High critical current densities (J(c)) of similar to3.6 MA cm(-2) at 77 K in self-field were obtained, yielding properties comparable to those of in situ films and ex situ films processed under atmospheric pressure condition.
C1 Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA.
Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
Oak Ridge Natl Lab, Met & Ceram Div, Oak Ridge, TN 37831 USA.
RP Zhang, Y (reprint author), Oak Ridge Natl Lab, Condensed Matter Sci Div, POB 2008, Oak Ridge, TN 37831 USA.
NR 15
TC 10
Z9 10
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0953-2048
J9 SUPERCOND SCI TECH
JI Supercond. Sci. Technol.
PD OCT
PY 2004
VL 17
IS 10
BP 1154
EP 1159
AR PII S0959-2048(04)78751-5
DI 10.1088/0953-2048/17/10/012
PG 6
WC Physics, Applied; Physics, Condensed Matter
SC Physics
GA 869IH
UT WOS:000224976100017
ER
PT J
AU Yoo, J
Leonard, KJ
Hsu, HS
Heatherly, L
List, FA
Lee, DF
Gapud, AA
Martin, PM
Cook, S
Paranthaman, M
Goyal, A
Kroeger, DM
AF Yoo, J
Leonard, KJ
Hsu, HS
Heatherly, L
List, FA
Lee, DF
Gapud, AA
Martin, PM
Cook, S
Paranthaman, M
Goyal, A
Kroeger, DM
TI The growth of YBCO films with high critical current at reduced pressures
using the BaF2 ex situ process
SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY
LA English
DT Article
ID CRITICAL-CURRENT-DENSITY; YBA2CU3O7-X THIN-FILMS; SUPERCONDUCTING TAPES;
DEPOSITION
AB The growth of 0.9-1.0 mum thick YBa2Cu3O7-delta (YBCO) films on biaxially textured Ni-3 at.% W (NiW) substrates using the BaF2 ex situ process was investigated at reduced pressures. By varying the water vapour pressure (P-H2O), Y-BaF2-Cu-O (YBFCO) precursor films deposited by e-beam co-evaporation were convened at a reduced total pressure (P-total) of 50-55 Torr and conversion temperature (T-S) of 740degreesC for a wet conversion time (t(W)) of 60 min. Critical current density (J(C)) values greater than 1 MA cm(-2) for the thick YBCO films were obtained under the condition of varying P-H2O from low pressure to 10 Torr. The transition temperatures (T-C) of the samples were over 90 K with DeltaT(C) = 1. 8-2.5 K. Pre-heat treatment of the precursor films on CeO2/YSZ/Y2O3/Ni/NiW substrates under an O-2 atmosphere condition before the conversion resulted in smooth surfaces without large secondary phase particles embedded in the films.
C1 Oak Ridge Natl Lab, Met & Ceram Div, Oak Ridge, TN 37831 USA.
Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA.
Oak Ridge Natl Lab, Chem Sci Div, Oak Ridge, TN 37831 USA.
RP Yoo, J (reprint author), Oak Ridge Natl Lab, Met & Ceram Div, POB 2008, Oak Ridge, TN 37831 USA.
EM yooj@ornl.gov
RI Paranthaman, Mariappan/N-3866-2015;
OI Paranthaman, Mariappan/0000-0003-3009-8531; Gapud,
Albert/0000-0001-9048-9230
NR 17
TC 7
Z9 7
U1 1
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0953-2048
J9 SUPERCOND SCI TECH
JI Supercond. Sci. Technol.
PD OCT
PY 2004
VL 17
IS 10
BP 1209
EP 1214
AR PII S0953-2048(04)81103-5
DI 10.1088/0953-2048/17/10/023
PG 6
WC Physics, Applied; Physics, Condensed Matter
SC Physics
GA 869IH
UT WOS:000224976100028
ER
PT J
AU Serquis, A
Civale, L
Coulter, JY
Hammon, DL
Liao, XZ
Zhu, YT
Peterson, DE
Mueller, FM
Nesterenko, VF
Indrakanti, SS
AF Serquis, A
Civale, L
Coulter, JY
Hammon, DL
Liao, XZ
Zhu, YT
Peterson, DE
Mueller, FM
Nesterenko, VF
Indrakanti, SS
TI Large field generation with a hot isostatically pressed powder-in-tube
MgB2 coil at 25 K
SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY
LA English
DT Article
ID CRITICAL-CURRENT DENSITY; SUPERCONDUCTING TAPES; CRITICAL CURRENTS;
FE-CLAD; WIRES; FABRICATION; MICROSTRUCTURE; ENHANCEMENT
AB We present the fabrication and test results of hot-isostatic-pressed (HIPed) powder-in-tube (PIT) MgB2 coils. The coils' properties were measured by transport and magnetization at different applied fields (H) and temperatures (T). The engineering critical current (J(e)) value is the largest reported in PIT MgB2 wires or tapes. At 25 K our champion six-layer coil was able to generate a field of 1 T at zero external field (I-c > 220 A, J(e) similar to 2.8 x 10(4) A cm(-2)). At 4 K this coil generated 1.6 T under an applied field of 1.25 T (I-c similar to 350 A, J(e) similar to 4.5 x 10(4) A cm(-2)). These magnetic fields are high enough for a superconducting transformer or magnet applications such as MRI. An SIC doped MgB2 single layer coil shows a promising improvement at high fields and exhibits J(c) > 10(4) A cm(-2) at 7 T.
C1 Los Alamos Natl Lab, Superconduct Technol Ctr, Los Alamos, NM 87545 USA.
Univ Calif San Diego, Dept Mech & Aerosp Engn, La Jolla, CA 92093 USA.
RP Serquis, A (reprint author), Los Alamos Natl Lab, Superconduct Technol Ctr, MS K763, Los Alamos, NM 87545 USA.
EM aserquis@cab.cnea.gov.ar
RI Zhu, Yuntian/B-3021-2008; Liao, Xiaozhou/B-3168-2009; Serquis,
Adriana/L-6554-2015
OI Zhu, Yuntian/0000-0002-5961-7422; Liao, Xiaozhou/0000-0001-8565-1758;
Serquis, Adriana/0000-0003-1499-4782
NR 17
TC 32
Z9 33
U1 1
U2 5
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0953-2048
J9 SUPERCOND SCI TECH
JI Supercond. Sci. Technol.
PD OCT
PY 2004
VL 17
IS 10
BP L35
EP L37
AR PII S0953-2048(04)78622-4
DI 10.1088/0953-2048/17/10/L01
PG 3
WC Physics, Applied; Physics, Condensed Matter
SC Physics
GA 869IH
UT WOS:000224976100001
ER
PT J
AU Nilsson, A
Pettersson, LGM
AF Nilsson, A
Pettersson, LGM
TI Chemical bonding on surfaces probed by X-ray emission spectroscopy and
density functional theory
SO SURFACE SCIENCE REPORTS
LA English
DT Review
DE chemical bonding; X-ray emission spectroscopy; density functional
theory; blyholder nodel; chemisorption; CO; N-2; NH3; formate; acetate;
glycine; ethylene; benzene; water; octane
ID CORE-LEVEL SPECTROSCOPY; STATIC-EXCHANGE CALCULATIONS; BINDING-ENERGY
SHIFTS; HIGHER EXCITED-STATES; ELECTRONIC-STRUCTURE; METAL-SURFACES;
TRANSITION-METAL; ABSORPTION-SPECTRA; ADSORPTION SITES; CARBON-MONOXIDE
AB X-ray emission spectroscopy applied to surface adsorbates is an experimental technique that provides an atom-specific projection of the electronic structure. In combination with theoretical density functional spectrum simulations, it becomes an extremely powerful tool to analyze in detail the surface chemical bond. The present review discusses both the experimental and computational techniques related to the spectroscopy and summarizes all applications to surface adsorbates published up to May 2004. The surface chemical bond is discussed in depth for a number of example systems taken from the five categories of bonding types: (i) atomic radical, (ii) diatomics with unsaturated pi systems (Blyholder model), (iii) unsaturated hydrocarbons (Dewar-Chatt-Duncanson model), (iv) lone pair interactions, and (v) saturated hydrocarbons (physisorption). (C) 2004 Elsevier B.V. All rights reserved.
C1 Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA.
Stockholm Univ, AlbaNova Univ Ctr, FYSIKUM, S-10691 Stockholm, Sweden.
RP Nilsson, A (reprint author), Stanford Synchrotron Radiat Lab, POB 20450, Stanford, CA 94309 USA.
EM nilsson@slac.stanford.edu
RI Nilsson, Anders/E-1943-2011; Pettersson, Lars/F-8428-2011; Pettersson,
Lars/J-4925-2013
OI Nilsson, Anders/0000-0003-1968-8696; Pettersson,
Lars/0000-0003-1133-9934
NR 212
TC 161
Z9 161
U1 4
U2 77
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0167-5729
EI 1879-274X
J9 SURF SCI REP
JI Surf. Sci. Rep.
PD OCT
PY 2004
VL 55
IS 2-5
BP 49
EP 167
DI 10.1016/j.surfrep.2004.06.002
PG 119
WC Chemistry, Physical; Physics, Condensed Matter
SC Chemistry; Physics
GA 857UC
UT WOS:000224142800001
ER
PT J
AU Townsend, TM
Larson, A
Louis, E
Macey, JR
AF Townsend, TM
Larson, A
Louis, E
Macey, JR
TI Molecular phylogenetics of Squamata: The position of snakes,
Amphisbaenians, and Dibamids, and the root of the Squamate tree
SO SYSTEMATIC BIOLOGY
LA English
DT Review
DE Amphisbaenia; Dibamidae; DNA; Iguania; lizards; long-branch attraction;
mitochondrial; nuclear; phylogeny; Scleroglossa; Serpentes; Squamata
ID MITOCHONDRIAL-DNA SEQUENCES; C-MOS; COMBINING DATA;
PACHYRHACHIS-PROBLEMATICUS; NUCLEOTIDE COMPOSITION; EVOLUTIONARY TREES;
CONFIDENCE-LIMITS; CENTRAL MEXICO; RNA GENES; LIZARDS
AB Squamate reptiles (snakes, lizards, and amphisbaenians) serve as model systems for evolutionary studies of a variety of morphological and behavioral traits, and phylogeny is crucial to many generalizations derived from such studies. Specifically, the traditional dichotomy between Iguania ( anoles, iguanas, chameleons, etc.) and Scleroglossa ( skinks, geckos, snakes, etc.) has been correlated with major evolutionary shifts within Squamata. We present a molecular phylogenetic study of 69 squamate species using approximately 4600 ( 2876 parsimony-informative) base pairs ( bp) of DNA sequence data from the nuclear genes RAG-1 (-2750 bp) and c-mos (-360 bp) and the mitochondrial ND2 region (-1500 bp), sampling all major clades and most major subclades. Under our hypothesis, species previously placed in Iguania, Anguimorpha, and almost all recognized squamate families form strongly supported monophyletic groups. However, species previously placed in Scleroglossa, Varanoidea, and several other higher taxa do not form monophyletic groups. Iguania, the traditional sister group of Scleroglossa, is actually highly nested within Scleroglossa. This unconventional rooting does not seem to be due to long-branch attraction, base composition biases among taxa, or convergence caused by similar selective forces acting on nonsister taxa. Studies of functional tongue morphology and feeding mode have contrasted the similar states found in Sphenodon ( the nearest outgroup to squamates) and Iguania with those of Scleroglossa, but our findings suggest that similar states in Sphenodon and Iguania result from homoplasy. Snakes, amphisbaenians, and dibamid lizards, limbless forms whose phylogenetic positions historically have been impossible to place with confidence, are not grouped together and appear to have evolved this condition independently. Amphisbaenians are the sister group of lacertids, and dibamid lizards diverged early in squamate evolutionary history. Snakes are grouped with iguanians, lacertiforms, and anguimorphs, but are not nested within anguimorphs.
C1 Washington Univ, Dept Biol, St Louis, MO 63130 USA.
Henry Doorly Zoo, Ctr Conservat & Res, Omaha, NE 68107 USA.
Lawrence Berkeley Natl Lab, Dept Evolut Genom, Joint Genome Inst, Walnut Creek, CA 94598 USA.
RP Townsend, TM (reprint author), Univ Texas, C0930, Austin, TX 78712 USA.
EM townsend@mail.utexas.edu; larsontl@biology.wustl.edu; edlo@omahazoo.com;
JRMacey@lbl.gov
NR 113
TC 295
Z9 310
U1 9
U2 75
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA
SN 1063-5157
J9 SYST BIOL
JI Syst. Biol.
PD OCT
PY 2004
VL 53
IS 5
BP 735
EP 757
DI 10.1080/10635150490522340
PG 23
WC Evolutionary Biology
SC Evolutionary Biology
GA 869CI
UT WOS:000224960100005
PM 15545252
ER
PT J
AU Cruzan, G
Corley, RA
Hard, GC
Mertens, JJWM
McMartin, KE
Snellings, WM
Gingell, R
Deyo, JA
AF Cruzan, G
Corley, RA
Hard, GC
Mertens, JJWM
McMartin, KE
Snellings, WM
Gingell, R
Deyo, JA
TI Subchronic toxicity of ethylene glycol in Wistar and F-344 rats related
to metabolism and clearance of metabolites
SO TOXICOLOGICAL SCIENCES
LA English
DT Article
DE ethylene glycol; nephropathy; metabolism; oxalate
ID CALCIUM-OXALATE; ELECTRON-MICROSCOPY; RENAL TRANSPORT; KIDNEY;
4-METHYLPYRAZOLE; HEMODIALYSIS; EXCRETION; DIAGNOSIS; EXPOSURE; MIXTURES
AB Ethylene glycol (CAS RN 107-21-1) can cause kidney toxicity via the formation of calcium oxalate crystals in a variety of species, including humans. Numerous repeated dose studies conducted in rats have indicated that male rats are more susceptible than female rats. Furthermore, subchronic and chronic studies using different dietary exposure regimens have indicated that male Wistar rats may be more sensitive to renal toxicity than male Fischer-344 (F-344) rats. This study was conducted to compare the toxicity of ethylene glycol in the two strains of rats under identical exposure conditions and to evaluate the potential contribution of toxicokinetic differences to strain sensitivity. Ethylene glycol was mixed in the diet at concentrations to deliver constant target dosage levels of 0, 50, 150, 500, or 1000 mg/kg/day for 16 weeks to groups of 10 male Wistar and 10 male F-344 rats based on weekly group mean body weights and feed consumption. Kidneys were examined histologically for calcium oxalate crystals and pathology. Samples of blood, urine, and kidneys from satellite animals exposed to 0, 150, 500, or 1000 mg/kg/day for 1 or 16 weeks were analyzed for ethylene glycol, glycolic acid, and oxalic acid. Treatment of Wistar rats at 1000 mg/kg/day resulted in the death of two rats; in addition, at 500 and 1000 mg/kg/day, group mean body weights were decreased compared to control throughout the 16 weeks. In F-344 rats exposed at 1000 mg/kg/day and in Wistar rats receiving 500 and 1000 mg/kg/day, there were lower urine specific gravities, higher urine volumes, and increased absolute and relative kidney weights. In both strains of rats treated at 500 and 1000 mg/kg/day, some or all treated animals had increased calcium oxalate crystals in the kidney tubules and crystal nephropathy. The effect was more severe in Wistar rats than in F-344 rats. Accumulation of oxalic acid in the kidneys of both strains of rats was consistent with the dose-dependent and strain-dependent toxicity. As the nephrotoxicity progressed over the 16 weeks, the clearance of ethylene glycol and its metabolites decreased, exacerbating the toxicity. Benchmark dose analysis indicated a BMDL05 for kidney toxicity in Wistar rats of 71.5 mg/kg/day; nearly fourfold lower than in F-344 rats (285 mg/kg/day). This study confirms that the Wistar rat is more sensitive to ethylene glycol-induced renal toxicity than the F-344 rat and indicates that metabolism or clearance plays a role in the strain differences.
C1 ToxWorks, Bridgeton, NJ 08302 USA.
PAcific NW Natl Lab, Richland, WA USA.
WIL Res Labs Inc, Ashland, OH USA.
Louisiana State Univ, Hlth Sci Ctr, Shreveport, LA 71105 USA.
Amer Chem Council, Ethylene Oxide Ethylene Glycol CHEMSTAR Panel, Arlington, VA USA.
RP Cruzan, G (reprint author), ToxWorks, 1153 Roadstown Rd, Bridgeton, NJ 08302 USA.
EM toxworks@aol.com
NR 42
TC 35
Z9 37
U1 1
U2 6
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 1096-6080
J9 TOXICOL SCI
JI Toxicol. Sci.
PD OCT
PY 2004
VL 81
IS 2
BP 502
EP 511
DI 10.1093/toxsci/kfh206
PG 10
WC Toxicology
SC Toxicology
GA 855BW
UT WOS:000223948900027
PM 15229367
ER
PT J
AU Whitehead, JP
Simpson, F
Hill, MM
Thomas, EC
Connolly, LM
Collart, F
Simpson, RJ
James, DE
AF Whitehead, JP
Simpson, F
Hill, MM
Thomas, EC
Connolly, LM
Collart, F
Simpson, RJ
James, DE
TI Insulin and oleate promote translocation of inosine-5 ' monophosphate
dehydrogenase to lipid bodies
SO TRAFFIC
LA English
DT Article
DE IMPDH; insulin; lipid bodies; oleate; PI 3-kinase; protein translocation
ID DIFFERENTIATION-RELATED PROTEIN; DOMINANT RETINITIS-PIGMENTOSA;
STIMULATED GLUCOSE-TRANSPORT; IMP DEHYDROGENASE; 5'-MONOPHOSPHATE
DEHYDROGENASE; PHOSPHATIDYLINOSITOL 3-KINASE; RECEPTOR SUBSTRATE-1;
3T3-L1 ADIPOCYTES; STORAGE DROPLETS; NEGATIVE MUTANT
AB In the present study we identify inosine-5' monophosphate dehydrogenase (IMPDH), a key enzyme in de novo guanine nucleotide biosynthesis, as a novel lipid body-associated protein. To identify new targets of insulin we performed a comprehensive 2-DE analysis of P-32-labelled proteins isolated from 3T3-L1 adipocytes (Hill et al. J Biol Chem 2000; 275: 24313-24320). IMPDH was identified by liquid chromatography/tandem mass spectrometry as a protein which was phosphorylated in a phosphatidylinositol (PI) 3-kinase-dependent manner upon insulin treatment. Although insulin had no significant effect on IMPDH activity, we observed translocation of IMPDH to lipid bodies following insulin treatment. Induction of lipid body formation with oleic acid promoted dramatic redistribution of IMPDH to lipid bodies, which appeared to be in contact with the endoplasmic reticulum, the site of lipid body synthesis and recycling. Inhibition of PI 3-kinase blocked insulin- and oleate-induced translocation of IMPDH and reduced oleate-induced lipid accumulation. However, we found no evidence of oleate-induced IMPDH phosphorylation, suggesting phosphorylation and translocation may not be coupled events. These data support a role for IMPDH in the dynamic regulation of lipid bodies and fatty acid metabolism and regulation of its activity by subcellular redistribution in response to extracellular factors that modify lipid metabolism.
C1 Garvan Inst Med Res, Dept Diabet & Obes, Sydney, NSW 2010, Australia.
Univ Queensland, Princess Alexandra Hosp, Ctr Diabet & Endocrine Res, Brisbane, Qld 4102, Australia.
Univ Queensland, Inst Mol Biosci, Brisbane, Qld 4072, Australia.
Ludwig Inst Canc Res, Joint Prote Lab, Parkville, Vic 3050, Australia.
Walter & Eliza Hall Inst Med Res, Parkville, Vic 3050, Australia.
Argonne Natl Lab, Biosci Div, Argonne, IL 60439 USA.
RP Whitehead, JP (reprint author), Garvan Inst Med Res, Dept Diabet & Obes, 384 Victoria St, Sydney, NSW 2010, Australia.
EM jwhitehead@cder.soms.uq.edu.au
RI Hill, Michelle M/G-4417-2010; Simpson, Fiona/J-2721-2012;
OI Hill, Michelle M/0000-0003-1134-0951; Simpson,
Fiona/0000-0002-0271-781X; Whitehead, Jonathan/0000-0003-3978-3148;
Collart, Frank/0000-0001-6942-4483
NR 49
TC 26
Z9 27
U1 0
U2 3
PU BLACKWELL MUNKSGAARD
PI COPENHAGEN
PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK
SN 1398-9219
J9 TRAFFIC
JI Traffic
PD OCT
PY 2004
VL 5
IS 10
BP 739
EP 749
DI 10.1111/j.1600-0854.2004.00217.x
PG 11
WC Cell Biology
SC Cell Biology
GA 852IG
UT WOS:000223748400002
PM 15355510
ER
PT J
AU Donnet, C
Erdemir, A
AF Donnet, C
Erdemir, A
TI Solid lubricant coatings: recent developments and future trends
SO TRIBOLOGY LETTERS
LA English
DT Article
DE solid lubricants; nanocomposite; nanostructure; deposition; surface
texture; friction; wear
ID TRANSMISSION ELECTRON-MICROSCOPY; WEAR-RESISTANT COATINGS; DIAMOND-LIKE
CARBON; HARD COATINGS; THIN-FILMS; TRIBOLOGICAL PROPERTIES;
AMORPHOUS-CARBON; RIGID DISKS; FRICTION; MULTILAYER
AB In recent years, great strides have been made in the formulation of solid lubricant coatings for a wide range of industrial applications. These coatings are now available in nano-structured and/or - composite forms to provide better performance and durability even under very severe sliding conditions. By coupling these coatings with smart surface engineering strategies ( such as micro-texturing and/or - patterning), researchers have achieved higher levels of performance and durability in demanding tribological applications. Some of these advanced coatings are now commercially available and can meet the ever-increasing performance and durability requirements of severe tribological applications. This paper will provide a historical overview of recent developments in solid lubricant coatings and will expand on the lubrication mechanisms of both traditional and new solid lubricants. Special emphasis will be placed on modern practices that are aimed at enhancing the properties of these coatings and expanding their uses in practical applications.
C1 Argonne Natl Lab, Div Energy Technol, Argonne, IL 60439 USA.
Univ St Etienne, Lab Traitement Signal & Instrumentat, UMR 5516, F-42000 St Etienne, France.
RP Erdemir, A (reprint author), Argonne Natl Lab, Div Energy Technol, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM ali.erdemir@anl.gov
NR 59
TC 123
Z9 137
U1 10
U2 54
PU KLUWER ACADEMIC/PLENUM PUBL
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1023-8883
J9 TRIBOL LETT
JI Tribol. Lett.
PD OCT
PY 2004
VL 17
IS 3
BP 389
EP 397
DI 10.1023/B:TRIL.0000044487.32514.1d
PG 9
WC Engineering, Chemical; Engineering, Mechanical
SC Engineering
GA 861OX
UT WOS:000224427800006
ER
PT J
AU Prasad, SV
Asthana, R
AF Prasad, SV
Asthana, R
TI Aluminum metal-matrix composites for automotive applications:
tribological considerations
SO TRIBOLOGY LETTERS
LA English
DT Article
DE aluminum composites; wear; friction; automobile engine parts; tribology
ID WEAR-MECHANISM MAPS; GRAPHITE PARTICLE COMPOSITES; AL-SI ALLOYS;
SILICON-CARBIDE; SLIDING WEAR; ABRASIVE WEAR; BEHAVIOR; FRICTION;
REINFORCEMENT; FABRICATION
AB Aluminum alloys possess a number of mechanical and physical properties that make them attractive for automotive applications, but they exhibit extremely poor resistance to seizure and galling. Reinforcement of aluminum alloys with solid lubricants, hard ceramic particles, short fibers and whiskers results in advanced metal - matrix composites (MMC) with precise balances of mechanical, physical and tribological characteristics. Advanced manufacturing technologies such as squeeze infiltration of molten alloys into fiber performs can be employed to produce near net-shape components. Brake rotors, pistons, connecting rods and integrally cast MMC engine blocks are some of the successful applications of Al MMCs in automotive industry. This paper gives an overview of the tribological behavior of Al MMCs reinforced with hard particles, short fibers, and solid lubricants, and the technologies for producing automotive parts from these novel materials.
C1 Sandia Natl Labs, Tech Staff, Mat & Proc Sci Ctr, Albuquerque, NM 87185 USA.
Univ Wisconsin Stout, Dept Technol, Menomonie, WI 54751 USA.
RP Prasad, SV (reprint author), Sandia Natl Labs, Tech Staff, Mat & Proc Sci Ctr, POB 5800, Albuquerque, NM 87185 USA.
EM svprasa@sandia.gov
NR 77
TC 119
Z9 131
U1 7
U2 51
PU KLUWER ACADEMIC/PLENUM PUBL
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1023-8883
J9 TRIBOL LETT
JI Tribol. Lett.
PD OCT
PY 2004
VL 17
IS 3
BP 445
EP 453
DI 10.1023/B:TRIL.0000044492.91991.f3
PG 9
WC Engineering, Chemical; Engineering, Mechanical
SC Engineering
GA 861OX
UT WOS:000224427800012
ER
PT J
AU Park, JY
Ogletree, DF
Salmeron, M
Jenks, CJ
Thiel, PA
AF Park, JY
Ogletree, DF
Salmeron, M
Jenks, CJ
Thiel, PA
TI Friction and adhesion properties of clean and oxidized Al-Ni-Co
decagonal quasicrystals: a UHV atomic force microscopy/scanning
tunneling microscopy study
SO TRIBOLOGY LETTERS
LA English
DT Article
DE scanning tunneling microscopy; atomic force microscopy; nanotribology;
Al-Ni-Co decagonal quasicrystal; adhesion; friction; in situ oxidation;
plastic deformation
ID ULTRAHIGH-VACUUM; TRIBOLOGICAL PROPERTIES; SURFACE OXIDATION;
SINGLE-GRAIN; CONTACT; INTERFACE; SYMMETRY
AB The tribological properties of adhesion and friction between 10-fold Al-Ni-Co decagonal quasicrystals and conductive W2C and TiN coated tips were studied in ultrahigh vacuum (UHV) with an atomic force microscope. Contacts between the tip and clean quasicrystals are dominated by strong adhesion forces, which result in irreversible deformations and material transfer. The irreversible adhesion was suppressed following an oxygen exposure of 10 Langmuir, which also reduced the adhesion force by a factor of two. An additional 2/3 reduction in adhesion force occurred after several 100 Langmuir exposure. A much larger decrease (by a factor 10) occurred by air-oxidation. The friction force decreased also with oxygen exposure although not as dramatically. A linear decrease by a factor two, was observed between the clean surface and the surface exposed to 200 Langmuir of oxygen. After that the friction force remained constant. Air-oxidation reduced friction by roughly another factor of two. In contrast with the clean surface, contacts with the air oxide substrate are well described by the Derjaguin-Muller-Toporov (DMT) model, while contacts with oxygen chemisorbed substrates are in the transition regime between Johnson-Kendall-Roberts (JKR) and DMT models.
C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
Iowa State Univ, Ames Lab, Ames, IA 50011 USA.
Iowa State Univ, Dept Chem, Ames, IA 50011 USA.
RP Park, JY (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA.
EM jypark@lbl.gov; salmeron@stm.lbl.gov
RI Park, Jeong Young/A-2999-2008; Ogletree, D Frank/D-9833-2016
OI Ogletree, D Frank/0000-0002-8159-0182
NR 33
TC 53
Z9 53
U1 0
U2 8
PU KLUWER ACADEMIC/PLENUM PUBL
PI NEW YORK
PA 233 SPRING ST, NEW YORK, NY 10013 USA
SN 1023-8883
J9 TRIBOL LETT
JI Tribol. Lett.
PD OCT
PY 2004
VL 17
IS 3
BP 629
EP 636
DI 10.1023/B:TRIL.0000044513.85505.60
PG 8
WC Engineering, Chemical; Engineering, Mechanical
SC Engineering
GA 861OX
UT WOS:000224427800033
ER
PT J
AU Hosking, FM
Lopez, EP
AF Hosking, FM
Lopez, EP
TI General guidelines for cleaning after soldering
SO WELDING JOURNAL
LA English
DT Editorial Material
C1 Sandia Natl Labs, Livermore, CA 94550 USA.
RP Hosking, FM (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA.
NR 0
TC 0
Z9 0
U1 0
U2 0
PU AMER WELDING SOC
PI MIAMI
PA 550 N W LEJEUNE RD, MIAMI, FL 33126 USA
SN 0043-2296
J9 WELD J
JI Weld. J.
PD OCT
PY 2004
VL 83
IS 10
BP 52
EP 53
PG 2
WC Metallurgy & Metallurgical Engineering
SC Metallurgy & Metallurgical Engineering
GA 859UI
UT WOS:000224293000009
ER
PT J
AU Murugananth, M
Babu, SS
David, SA
AF Murugananth, M
Babu, SS
David, SA
TI Optimization of shielded metal arc weld metal composition for charpy
toughness
SO WELDING JOURNAL
LA English
DT Article
ID FERRITIC STEEL WELDS; MICROSTRUCTURE; TI; TITANIUM; NITROGEN
AB Artificial neural network models that predict the Charpy-impact toughness values as a function of composition, heat treatment, and shielded metal arc welding process parameters were coupled with multipurpose optimization software. This coupled model was used to optimize the carbon, nickel, and manganese concentrations in a weld to achieve a maximum toughness of 120 J at -60degreesC. The coupled model used linear and nonlinear techniques to explore the possible combinations of carbon, manganese, and nickel concentrations for a given set of welding process parameters. An optimum weld metal composition was achieved only with nonlinear methods. The number of iterations and the exploration of input parameter space varied depending upon the type of nonlinear technique. The predicted weld metal composition was in agreement with published results.
C1 Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN USA.
RP Murugananth, M (reprint author), Nanyang Technol Univ, Sch Mat Engn, Singapore 2263, Singapore.
RI Babu, Sudarsanam/D-1694-2010
OI Babu, Sudarsanam/0000-0002-3531-2579
NR 14
TC 6
Z9 6
U1 0
U2 0
PU AMER WELDING SOC
PI MIAMI
PA 550 N W LEJEUNE RD, MIAMI, FL 33126 USA
SN 0043-2296
J9 WELD J
JI Weld. J.
PD OCT
PY 2004
VL 83
IS 10
BP 267S
EP 276S
PG 10
WC Metallurgy & Metallurgical Engineering
SC Metallurgy & Metallurgical Engineering
GA 859UI
UT WOS:000224293000011
ER
PT J
AU Lin, JF
Fei, YW
Sturhahn, W
Zhao, JY
Mao, HK
Hemley, RJ
AF Lin, JF
Fei, YW
Sturhahn, W
Zhao, JY
Mao, HK
Hemley, RJ
TI Magnetic transition and sound velocities of Fe3S at high pressure:
implications for Earth and planetary cores
SO EARTH AND PLANETARY SCIENCE LETTERS
LA English
DT Article
DE light element; sound velocity; Fe3S; Earth's core; sulfur
ID DENSITY-OF-STATES; NUCLEAR RESONANT SCATTERING; IRON-SULFUR COMPOUND;
HIGH-TEMPERATURES; OUTER CORE; LIQUID FE; MARS; EQUATION; STABILITY;
NICKEL
AB Magnetic, elastic, thermodynamic, and vibrational properties of the most iron-rich sulfide, Fe3S, known to date have been studied with synchrotron Mossbauer spectroscopy (SMS) and nuclear resonant inelastic X-ray scattering (NRIXS) up to 57 GPa at room temperature. The magnetic hyperfine fields derived from the time spectra of the synchrotron Mossbauer spectroscopy show that the low-pressure magnetic phase displays two magnetic hyperfine field sites and that a magnetic collapse occurs at 21 GPa. The magnetic to non-magnetic transition significantly affects the elastic, thermodynamic, and vibrational properties of Fe3S. The magnetic collapse of Fe3S may also affect the phase relations in the iron-sulfur system, changing the solubility of sulfur in iron under higher pressures. Determination of the physical properties of the nonmagnetic Fe3S phase is important for the interpretation of the amount and properties of sulfur present in the planetary cores. Sound velocities of Fe3S obtained from the measured partial phonon density of states (PDOS) for Fe-57 incorporated in the alloy show that Fe3S has higher compressional and shear wave velocity than those of hcp-Fe and hcp-Fe0.92Ni0.08 alloy under high pressures, making sulfur a potential light element in the Earth's core based on geophysical arguments. The V-P and V-S of the non-magnetic Fe3S follow a Birch's law trend whereas the slopes decrease in the magnetic phase, indicating that the decrease of the magnetic moment significantly affects the sound velocities. If the Martian core is in the solid state containing 14.2 wt.% sulfur, it is likely that the non-magnetic Fe3S phase is a dominant component and that our measured sound velocities of Fe3S can be used to construct the corresponding velocity profile of the Martian core. It is also conceivable that Fe3P and Fe3C undergo similar magnetic phase transitions under high pressures. (C) 2004 Elsevier B.V. All rights reserved.
C1 Carnegie Inst Washington, Geophys Lab, Washington, DC 20015 USA.
Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Lin, JF (reprint author), Carnegie Inst Washington, Geophys Lab, 5251 Broad Branch Rd NW, Washington, DC 20015 USA.
EM j.lin@gl.ciw.edu; fei@gl.ciw.edu; struhahn@aps.anl.gov;
jzhao@aps.anl.gov; mao@gl.ciw.edu; hemley@gl.ciw.edu
RI Lin, Jung-Fu/B-4917-2011; Fei, Yingwei/F-3709-2011
OI Fei, Yingwei/0000-0001-9955-5353
NR 39
TC 36
Z9 37
U1 3
U2 18
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0012-821X
J9 EARTH PLANET SC LETT
JI Earth Planet. Sci. Lett.
PD SEP 30
PY 2004
VL 226
IS 1-2
BP 33
EP 40
DI 10.1016/j.epsl.2004.07.018
PG 8
WC Geochemistry & Geophysics
SC Geochemistry & Geophysics
GA 858ZO
UT WOS:000224231600003
ER
PT J
AU Yang, X
Kiran, B
Wang, XB
Wang, LS
Mucha, M
Jungwirth, P
AF Yang, X
Kiran, B
Wang, XB
Wang, LS
Mucha, M
Jungwirth, P
TI Solvation of the azide anion (N-3(-)) in water clusters and aqueous
interfaces: A combined investigation by photoelectron spectroscopy,
density functional calculations, and molecular dynamics simulations
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID DOUBLY-CHARGED ANIONS; AB-INITIO; INFRARED-SPECTRA; EXCITED-STATES;
NITROGEN-ATOMS; GAS-PHASE; ION; PHOTODETACHMENT; N3; STABILIZATION
AB We report a photoelectron spectroscopy and computational study of hydrated N-3(-) anion clusters, N-3(-)(H2O)(n) (n = 0-16), in the gas phase. Photoelectron spectra of the solvated azide anions were observed to consist of a single peak, similar to that of the bare N-3(-), but the spectral width was observed to broaden as a function of cluster size due to solvent relaxation upon electron detachment. The adiabatic and vertical electron detachment energies were measured as a function of solvent number. The measured electron binding energies indicate that the first four solvent molecules have much stronger interactions with the solute anion, forming the first solvation shell. The spectral width levels off at n = 7, suggesting that three waters in the second solvation shell are sufficient to capture the second shell effect in the solvent relaxation. Density functional calculations were carried out for N-3(-) solvated by one to five waters and showed that the first four waters interact directly with N-3(-) and form the first solvation shell on one side of the solute. The fifth water does not directly solvate N-3(-) and begins the second solvation shell, consistent with the observed photoelectron data. Molecular dynamics simulations on both solvated clusters and bulk interface revealed that the asymmetric solvation state in small clusters persist for larger systems and that N-3(-) prefers interfacial solvation on water clusters and at the extended vacuum/water interface.
C1 Washington State Univ, Dept Phys, Richland, WA 99352 USA.
Pacific NW Natl Lab, WR Wiley Environm Sci Lab, Richland, WA 99352 USA.
Acad Sci Czech Republ, Inst Organ Chem & Biochem, CR-16610 Prague, Czech Republic.
Ctr Complex Mol Syst & Biomol, Prague 16610 6, Czech Republic.
RP Wang, LS (reprint author), Washington State Univ, Dept Phys, 2710 Univ Dr, Richland, WA 99352 USA.
EM ls.wang@pnl.gov
RI Jungwirth, Pavel/D-9290-2011
OI Jungwirth, Pavel/0000-0002-6892-3288
NR 44
TC 32
Z9 32
U1 1
U2 14
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5639
J9 J PHYS CHEM A
JI J. Phys. Chem. A
PD SEP 30
PY 2004
VL 108
IS 39
BP 7820
EP 7826
DI 10.1021/jp0496396
PG 7
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 856UV
UT WOS:000224071600008
ER
PT J
AU McCunn, LR
Krisch, MJ
Takematsu, K
Butler, LJ
Shu, JN
AF McCunn, LR
Krisch, MJ
Takematsu, K
Butler, LJ
Shu, JN
TI Competing pathways in the 248 nm photodissociation of propionyl chloride
and the barrier to dissociation of the propionyl radical
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID EMISSION-SPECTROSCOPY; PHOTOIONIZATION; DECOMPOSITION; KINETICS;
PHOTOLYSIS; DYNAMICS; ACETONE; ACETYL; ATOM
AB Photofragment translational spectroscopy was used to study the photodissociation of propionyl chloride at 248 nm. The crossed laser-molecular beam experiment with VUV photoionization showed two primary dissociation channels, C-Cl bond fission and HCl elimination. Following cleavage of the C-Cl bond, unimolecular dissociation of the propionyl radical produced CH3CH2 and CO. The energy barrier to the CH3CH2CO --> CH3CH2 + CO reaction was estimated to be in the range of 16.3 +/- 1.5 kcal/mol by determining the internal energy distribution of surviving propionyl radicals. No other secondary dissociation channels were observed for the propionyl radical. The HCl elimination channel, previously reported only for the condensed phase of propionyl chloride, was observed as the minor primary dissociation channel in the gas phase. The cofragment to the HCl elimination, CH3CHCO or CH2CH2CO, underwent secondary dissociation to produce CO and CH2CH2 with a significant amount of energy partitioned into translational motion.
C1 Univ Chicago, James Franck Inst, Chicago, IL 60637 USA.
Univ Chicago, Dept Chem, Chicago, IL 60637 USA.
Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA.
RP Butler, LJ (reprint author), Univ Chicago, James Franck Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA.
EM ljb4@midway.uchicago.edu
NR 23
TC 13
Z9 13
U1 1
U2 5
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5639
J9 J PHYS CHEM A
JI J. Phys. Chem. A
PD SEP 30
PY 2004
VL 108
IS 39
BP 7889
EP 7894
DI 10.1021/jp0496506
PG 6
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 856UV
UT WOS:000224071600017
ER
PT J
AU Shu, JN
Peterka, DS
Leone, SR
Ahmed, M
AF Shu, JN
Peterka, DS
Leone, SR
Ahmed, M
TI Tunable synchrotron vacuum ultraviolet ionization, time-of-flight
investigation of the photodissociation of trans-crotonaldehyde at 193 nm
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID VAPOR-PHASE PHOTOCHEMISTRY; MOLECULAR-STRUCTURE; GAS-PHASE; INTERNAL
STATES; FRAGMENT HCO; ACROLEIN; PHOTOLYSIS; SPECTROSCOPY; EXCITATION;
ALDEHYDES
AB Photodissociation of the unsaturated trans-crotonaldehyde (CH3CHCHCHO) molecule at 193 nm is studied using photofragment translational spectroscopy (PTS) and detected by ionization with tunable synchrotron ultraviolet radiation. The photofragment time-of-flight (TOF) spectra at m/e = 68(C4H4O+), 55(C3H3O+), 41(C3H5+), 40(C3H4+), 39(C3H3+), 29(?), 28(CO+), 27(C2H3+), 26(C2H2+), and 15(CH3+) are measured. Mass 29 could not be unambiguously assigned. Analysis of these experimental results reveals three dissociation channels: H + C4H5O, CH3 + C3H3O, and CO + C3H6. A fourth channel associated with mass 29 could reflect either formation of HCO or C2H5. The measurements also indicate that C3H6 undergoes strong secondary dissociation. The center of mass (CM) translational energy distributions obtained by fitting the TOF mass spectra of the fragments yield values 42, 23, and 43 kJ/mol average CM kinetic energies for the H + C4H5O, CH3 + C3H3O and CO + C3H6 channels, respectively. The photoionization yield curve of the CHCHCHO radical is measured for the first time with an onset less than or equal to7.6 eV. The photodissociation mechanism of crotonaldehyde is compared with the photodissociation dynamics of acrolein (CH2CHCHO).
C1 Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
RP Ahmed, M (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
EM mahmed@lbl.gov
RI Ahmed, Musahid/A-8733-2009
NR 44
TC 7
Z9 7
U1 1
U2 14
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5639
J9 J PHYS CHEM A
JI J. Phys. Chem. A
PD SEP 30
PY 2004
VL 108
IS 39
BP 7895
EP 7902
DI 10.1021/jp049638d
PG 8
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 856UV
UT WOS:000224071600018
ER
PT J
AU Hall, GE
Komissarov, AV
Sears, TJ
AF Hall, GE
Komissarov, AV
Sears, TJ
TI Doppler-resolved spectroscopy as an assignment tool in the spectrum of
singlet methylene
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID MAGNETIC-ROTATION SPECTROSCOPY; NEAR-INFRARED SPECTROSCOPY; ORBITAL
ANGULAR-MOMENTUM; ABSORPTION-SPECTROSCOPY; VIBRATIONAL RESONANCES;
VISIBLE ABSORPTION; CH2; STATE; KETENE; PHOTODISSOCIATION
AB New spectra of methylene, CH2, in the near-infrared have been obtained following 308 nm photolysis of ketene, CH2CO. Nascent photofragment Doppler spectra and thermalization kinetics vary systematically with the energy of the absorbing level, providing additional information to support or refute spectroscopic assignments made on the basis of the frequency measurements and combination differences. New assignments in the 10800 cm(-1) region extend to higher rotational levels than before and provide new spectroscopic term values for some CH2 a(1)A(1) state levels. The number and intensity distribution of unassigned lines in the spectrum is consistent with the expected transitions from vibrationally excited and high rotational levels of the a(1)A(1) state and transitions due to (CH2)-C-13 in natural abundance, and does not require a significant contribution from additional transitions arising from triplet-state perturbations.
C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
RP Hall, GE (reprint author), Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
EM gehall@bnl.gov
RI Hall, Gregory/D-4883-2013; Sears, Trevor/B-5990-2013
OI Hall, Gregory/0000-0002-8534-9783; Sears, Trevor/0000-0002-5559-0154
NR 27
TC 12
Z9 12
U1 1
U2 7
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5639
J9 J PHYS CHEM A
JI J. Phys. Chem. A
PD SEP 30
PY 2004
VL 108
IS 39
BP 7922
EP 7927
DI 10.1021/jp0494133
PG 6
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 856UV
UT WOS:000224071600022
ER
PT J
AU Perri, MJ
Van Wyngarden, AL
Lin, JJ
Lee, YT
Boering, KA
AF Perri, MJ
Van Wyngarden, AL
Lin, JJ
Lee, YT
Boering, KA
TI Energy dependence of oxygen isotope exchange and quenching in the
O(D-1)+CO2 reaction: A crossed molecular beam study
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID CARBON-DIOXIDE; HEAVY OZONE; STRATOSPHERIC CO2; COLLISIONAL
DEACTIVATION; MIDDLE ATMOSPHERE; INFRARED SPECTRUM; METASTABLE STATES;
RATE COEFFICIENTS; MULTI-ISOTOPE; GAS-PHASE
AB The dynamics of the O-18(D-1) + (CO2)-C-44 oxygen isotope exchange reaction has been studied using a crossed molecular beam apparatus at collision energies of 4.2 and 7.7 kcal/mol. At both collision energies, two reaction channels are observed: isotope exchange in which quenching to O(P-3) occurs and isotope exchange in which the product oxygen atom remains on the singlet surface. Electronic quenching of O(D-1) is the major channel at both collision energies, accounting for 84% of isotope exchange at 4.2 kcal/mol and 67% at 7.7 kcal/mol. Both channels proceed via a CO3* complex that is long-lived with respect to its rotational period. Combined with recent ab initio and statistical calculations by Mebel et al., the long complex lifetimes suggest that statistical isotope exchange occurs in the CO3* complex (apart from zero-point energy isotope effects), although the existence of a small, dynamically driven unconventional isotope effect in this reaction cannot yet be ruled out. These new molecular-level details may help provide a more quantitative understanding of the heavy isotope enrichment in CO2 observed in the stratosphere.
C1 Univ Calif Berkeley, Dept Earth & Planetary Sci, Berkeley, CA 94720 USA.
Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
Natl Taiwan Univ, Dept Chem, Taipei 10764, Taiwan.
Acad Sinica, Inst Atom & Mol Sci, Taipei 115, Taiwan.
Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA.
RP Boering, KA (reprint author), Univ Calif Berkeley, Dept Earth & Planetary Sci, Berkeley, CA 94720 USA.
EM boering@cchem.berkeley.edu
RI Perri, Mark/E-9176-2010; Lin, Jim Jr-Min/F-7916-2012; Lee,
Yuan-Tseh/F-7914-2012
NR 56
TC 33
Z9 33
U1 0
U2 14
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5639
J9 J PHYS CHEM A
JI J. Phys. Chem. A
PD SEP 30
PY 2004
VL 108
IS 39
BP 7995
EP 8001
DI 10.1021/jp0485845
PG 7
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 856UV
UT WOS:000224071600030
ER
PT J
AU Hayashi, M
Lin, SH
Shen, YR
AF Hayashi, M
Lin, SH
Shen, YR
TI Applications of molecular theory of sum-frequency generations to study
molecular chirality
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID 2ND HARMONIC-GENERATION; VIBRATIONAL SPECTROSCOPY; 2ND-HARMONIC
GENERATION; OPTICAL ACTIVITY; SURFACES; LIQUIDS; HYPERPOLARIZABILITY;
ADSORPTION; MICROSCOPY; MECHANISM
AB Theoretical expressions for sum-frequency generation (SFG) signals, which can be applied to treat various SFG experiments, have been derived. We have applied the theoretical results to study the SFG experiments for the near-electronic resonant, singly resonant IR-UV, and doubly resonant IR-UV cases that are associated with the measurements reported by Shen's group. We have taken into account both the electric and magnetic dipole interactions and the applied laser and detection polarization combinations explicitly. Relationships between the polarization combinations and the electric-dipole-electric-dipole mechanism, the electric-dipole-magnetic-dipole mechanism, the magnetic-dipole-electric-dipole mechanism, and the magnetic-dipole-magnetic-dipole mechanisms are clarified. Based on the theoretical results, near-electronic resonant SFG, singly resonant IR-UV SFG, doubly resonant IR SFG experiments are discussed.
C1 Natl Taiwan Univ, Ctr Condensed Matter Sci, Taipei 106, Taiwan.
Acad Sinica, Inst Atom & Mol Sci, Taipei 106, Taiwan.
Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
Lawrence Berkeley Natl Lab, Div Sci Mat, Berkeley, CA 94720 USA.
RP Hayashi, M (reprint author), Natl Taiwan Univ, Ctr Condensed Matter Sci, 1 Roosevelt Rd,Sec 4, Taipei 106, Taiwan.
EM atmyh@ccms.ntu.edu.tw
RI Hayashi, Michitoshi/K-6314-2014
OI Hayashi, Michitoshi/0000-0001-7507-8708
NR 50
TC 17
Z9 17
U1 1
U2 13
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5639
J9 J PHYS CHEM A
JI J. Phys. Chem. A
PD SEP 30
PY 2004
VL 108
IS 39
BP 8058
EP 8076
DI 10.1021/jp0492467
PG 19
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 856UV
UT WOS:000224071600038
ER
PT J
AU Townsend, D
Lee, SK
Suits, AG
AF Townsend, D
Lee, SK
Suits, AG
TI DC slice Imaging of CH3Cl photolysis at 193.3 nm
SO JOURNAL OF PHYSICAL CHEMISTRY A
LA English
DT Article
ID ULTRAVIOLET PHOTODISSOCIATION DYNAMICS; MAGNETIC CIRCULAR-DICHROISM;
BOND-DISSOCIATION ENERGIES; FLIGHT MASS-SPECTROMETRY; METHYL-IODIDE;
A-BAND; RECOIL ANISOTROPY; TRANSLATIONAL SPECTROSCOPY; 1ST CONTINUUM;
VELOCITY DISTRIBUTIONS
AB The DC slice imaging method is used to record energy- and angle-resolved distributions for both ground-state Cl (P-2(3/2)) and spin-orbit excited Cl* (P-2(1/2)) photofragments produced from the (A) over tilde -band photolysis of CH3Cl at 193.3 nm. The dissociation is found to be highly impulsive, with similar to90% of the available energy being released into translation. The angular distributions are predominantly perpendicular in the case of both the ground state and spin-orbit excited chlorine atom fragments, as characterized by recoil-energy averaged values of beta = -0.46 and beta* = -0.74 respectively, although we find considerable variation in both channels as a function of CH3 internal energy. In contradiction with previous measurements, we conclude that the transition to the (1)Q(1) state dominates much of the (A) over tilde -band profile, and this has significant implications for the description of the dissociation dynamics. Our findings are rationalized in terms of similar measurements performed with other methyl halides and their H atom substituted analogues.
C1 SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA.
Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
Wayne State Univ, Dept Chem, Detroit, MI 48202 USA.
RP Townsend, D (reprint author), SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA.
EM David.Townsend@sunysb.edu
RI Townsend, Dave/K-3461-2015
NR 63
TC 17
Z9 17
U1 1
U2 14
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1089-5639
J9 J PHYS CHEM A
JI J. Phys. Chem. A
PD SEP 30
PY 2004
VL 108
IS 39
BP 8106
EP 8114
DI 10.1021/jp0490756
PG 9
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 856UV
UT WOS:000224071600044
ER
PT J
AU Wang, W
Gu, BH
Liang, LY
Hamilton, WA
Wesolowski, DJ
AF Wang, W
Gu, BH
Liang, LY
Hamilton, WA
Wesolowski, DJ
TI Synthesis of rutile (alpha-TiO2) nanocrystals with controlled size and
shape by low-temperature hydrolysis: Effects of solvent composition
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Letter
ID TIO2 ULTRAFINE POWDERS; TITANIUM-DIOXIDE; HYDROTHERMAL SYNTHESIS;
RAMAN-SPECTROSCOPY; THERMAL HYDROLYSIS; AMORPHOUS TITANIA; ANATASE;
TICL4; PHASE; LIGHT
AB A new methodology was developed to synthesize uniform rutile (alpha-TiO2) nanocrystals by the thermohydrolysis of titanium(IV) chloride in hydrochloric acid-alcohol aqueous solutions at 40-90 degreesC. Depending on the acidity, the solvent used, and the aging temperature, rod-shaped rutile nanocrystals in sizes ranging from similar to100 nm to 800 nm were obtained. Nanocrystal size and shape are shown to be strongly and systematically related to the type and the concentration of alcohol used in the alcohol-water solvent, as well as the presence or absence of both cationic and anionic surfactants. No other titania phases, such as anatase or brookite, were detected using X-ray diffraction, transmission electron microscopy, and Raman spectroscopy.
C1 Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA.
Oak Ridge Natl Lab, Div Condensed Matter Sci, Oak Ridge, TN 37831 USA.
Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
RP Wang, W (reprint author), Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA.
EM wangw@ornl.gov
RI Wang, Wei/B-5924-2012; Gu, Baohua/B-9511-2012; Liang, Liyuan/O-7213-2014
OI Gu, Baohua/0000-0002-7299-2956; Liang, Liyuan/0000-0003-1338-0324
NR 47
TC 116
Z9 119
U1 9
U2 75
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD SEP 30
PY 2004
VL 108
IS 39
BP 14789
EP 14792
DI 10.1021/jp0470952
PG 4
WC Chemistry, Physical
SC Chemistry
GA 856UI
UT WOS:000224070200001
ER
PT J
AU Lai, JR
Shafi, KVPM
Ulman, A
Loos, K
Yang, NL
Cui, MH
Vogt, T
Estournes, S
Locke, DC
AF Lai, JR
Shafi, KVPM
Ulman, A
Loos, K
Yang, NL
Cui, MH
Vogt, T
Estournes, S
Locke, DC
TI Mixed iron-manganese oxide nanoparticles
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID GAMMA-FE2O3 NANOPARTICLES; SONOCHEMICAL PREPARATION;
MAGNETIC-PROPERTIES; NANOCRYSTALLINE GAMMA-FE2O3; NIFE2O4 PARTICLES;
AMORPHOUS IRON; ZN FERRITES; SIZE; TEMPERATURE; PYROLYSIS
AB Designing nanoparticles for practical applications requires knowledge and control of how their desired properties relate to their composition and structure. Here, we present a detailed systematic study of mixed iron-manganese oxide nanoparticles, showing that ultrasonication provides the high-energy reaction conditions required for complete atomic level mixing of Fe(III) and Mn(III) when amorphous Fe2O3 nanoparticles are irradiated in the presence of Mn-2(CO)(10) in ambient atmosphere. X-ray diffraction (XRD) results reveal that the crystal structure of manganese iron mixed oxide nanoparticles changes from spinel to bixbyite with increasing of Mn(III) content. The results of room-temperature magnetization curves are consistent with the XRD patterns and spin density from electron paramagnetic resonance measurements, showing samples converting from superparamagnetic to antiferromagnetic, when the crystal structures of these samples transform from spinel to bixbyite.
C1 Polytech Univ, Dept Chem Engn Chem & Mat Sci, Brooklyn, NY 11201 USA.
CUNY Coll Staten Isl, Dept Chem, Staten Isl, NY USA.
Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
Inst Phys & Chim Mat Strasbourg, CNR, UMR7504, ULP, F-67084 Strasbourg, France.
CUNY Queens Coll, NSF MRSEC Polymers Engineered Interfaces, Flushing, NY 11367 USA.
CUNY Queens Coll, Dept Chem & Biochem, Flushing, NY 11367 USA.
RP Locke, DC (reprint author), Polytech Univ, Dept Chem Engn Chem & Mat Sci, 6 Metrotech Ctr, Brooklyn, NY 11201 USA.
EM aulman@duke.poly.edu
RI Loos, Katja/B-9792-2008; Vogt, Thomas /A-1562-2011; ESTOURNES,
Claude/F-2322-2017
OI Loos, Katja/0000-0002-4613-1159; Vogt, Thomas /0000-0002-4731-2787;
ESTOURNES, Claude/0000-0001-8381-8454
NR 56
TC 28
Z9 28
U1 2
U2 23
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD SEP 30
PY 2004
VL 108
IS 39
BP 14876
EP 14883
DI 10.1021/jp049913
PG 8
WC Chemistry, Physical
SC Chemistry
GA 856UI
UT WOS:000224070200017
ER
PT J
AU Gateshki, M
Hwang, SJ
Park, DH
Ren, Y
Petkov, V
AF Gateshki, M
Hwang, SJ
Park, DH
Ren, Y
Petkov, V
TI Structure of nanocrystalline alkali metal manganese oxides by the atomic
pair distribution function technique
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID RECHARGEABLE LITHIUM BATTERIES; X-RAY-DIFFRACTION; ELECTROCHEMICAL
CHARACTERISTICS; RIETVELD-ANALYSIS; CATHODE MATERIAL; SPINEL; PROGRAM;
PERFORMANCE; REFINEMENT; ELECTRODE
AB The atomic scale structures of two nanocrystalline K-Li-Mn-O-I materials obtained through Chimie Douce route in aqueous and acetone solutions have been determined using X-ray diffraction and atomic Pair Distribution Function technique. Both samples have been found to possess a layered-type structure, where the layers are made of edge-shared MnO6 octahedra. With the sample prepared in aqueous solution, the layers are well separated and the interlayer space is occupied by both Li and K atoms. With the sample prepared in acetone solution the Mn-O layers are not so well separated and encapsulate mostly Li atoms. This material exhibits some Li/Mn substitutional disorder as well. The new structural information has been used to explain the electrochemical behavior of the two nanocrystalline materials. Some methodological aspects of the atomic pair distribution function technique and its applicability to study the structure of crystalline and nanocrystalline materials have been discussed as well.
C1 Cent Michigan Univ, Dept Phys, Mt Pleasant, MI 48859 USA.
Konkuk Univ, Coll Nat Sci, Dept Appl Chem, Chungbuk 380701, South Korea.
Konkuk Univ, Coll Nat Sci, Ctr Emerging Wireless Transmiss Technol, Chungbuk 380701, South Korea.
Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Petkov, V (reprint author), Cent Michigan Univ, Dept Phys, 203 Dow Sci, Mt Pleasant, MI 48859 USA.
EM petkov@phy.cmich.edu
NR 37
TC 21
Z9 21
U1 0
U2 8
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD SEP 30
PY 2004
VL 108
IS 39
BP 14956
EP 14963
DI 10.1021/jp048340k
PG 8
WC Chemistry, Physical
SC Chemistry
GA 856UI
UT WOS:000224070200028
ER
PT J
AU Cygan, RT
Guggenheim, S
van Groos, AFK
AF Cygan, RT
Guggenheim, S
van Groos, AFK
TI Molecular models for the intercalation of methane hydrate complexes in
montmorillonite clay
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID DYNAMICS SIMULATIONS; COMPUTER-SIMULATION; HYDROPHOBIC HYDRATION;
LATTICE DISTORTION; MINERAL SURFACES; AQUEOUS-SOLUTION; WATER;
ADSORPTION; PHASE; DIFFRACTION
AB Molecular simulations were performed to determine the structure and behavior of methane and H2O in the interlayer of various montmorillonite clays. Molecular dynamics using NPT ensembles and large simulation supercells-comprised of Na-, K-, Ca-, and Mg-montmorillonite with methane and H2O-provide all-atom trajectories for simulation times up to 200 ps. Simulated X-ray diffraction patterns for the equilibrated structures exhibit basal (001) d-values that range from 23 Angstrom to 24 Angstrom. Radial distribution functions for carbon-carbon, oxygen-oxygen, and carbon-oxygen derived from the trajectories indicate an interlayer structure that is different from the bulk methane hydrate and from methane in aqueous solution. Some order of the methane hydrate structure is preserved within the interlayer and is related to the formation of methane clathrate structures with H2O and the clay surfaces and the formation of a hydrogen-bonded network in the interlayer. The theoretical results support the recent experimental observation of a stable methane hydrate intercalate with Na-montmorillonite.
C1 Sandia Natl Labs, Dept Geochem, Albuquerque, NM 87185 USA.
Univ Illinois, Dept Earth & Environm Sci, Chicago, IL 60607 USA.
RP Cygan, RT (reprint author), Sandia Natl Labs, Dept Geochem, POB 5800, Albuquerque, NM 87185 USA.
EM rtcygan@sandia.gov
NR 50
TC 49
Z9 55
U1 4
U2 34
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD SEP 30
PY 2004
VL 108
IS 39
BP 15141
EP 15149
DI 10.1021/jp037900x
PG 9
WC Chemistry, Physical
SC Chemistry
GA 856UI
UT WOS:000224070200052
ER
PT J
AU Peterson, EJ
Weeks, BL
De Yoreo, JJ
Schwartz, PV
AF Peterson, EJ
Weeks, BL
De Yoreo, JJ
Schwartz, PV
TI Effect of environmental conditions on Dip Pen Nanolithography of
mercaptohexadecanoic acid
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID MOLECULARLY THIN-FILMS; FORCE MICROSCOPE; WATER-ADSORPTION; SURFACES;
MICA; TRANSPORT; GOLD; TIP; INK
AB To better understand the process of Probe Mediated Deposition (PMD), or Dip-Pen Nanolithography (DPN), we have studied the transport of an amphiphilic molecule, mercaptohexadecanoic acid (MHA), from the tip of an atomic force microscope (AFM) onto a gold substrate. The process was studied as a function of relative humidity (RH), total elapsed patterning time, and procedure for coating the AFM tip with MHA. Molecular transport is strongly dependent on the conditions of the AFM tip, such as prior cleaning techniques, and whether MHA was deposited dry onto the AFM tip, or from a solution. The transport rate of MHA decreases in a roughly exponential manner over about one hour to a rate that is less than a fourth that of the original transport rate. While the molecular transport rate was independent of RH for 52% RH or less, increasing the RH to 70% about doubled the transport rate, and at 98% RH an increase of about 500% was observed. Our data suggest that the MHA is mobile in the absence of a water meniscus, supporting a dual transport mechanism, whereby at low RH, thermal diffusion drives the "dry deposition" of MHA. As RH increases above similar to52%, there is sufficient water present at the tip-substrate interface for aqueous transport of solvated MHA to augment the transport rate.
C1 Calif Polytech State Univ San Luis Obispo, Dept Chem, San Luis Obispo, CA 93407 USA.
Lawrence Livermore Natl Lab, Biosecur & Nanosci Lab, Livermore, CA 94551 USA.
Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA.
RP Schwartz, PV (reprint author), Calif Polytech State Univ San Luis Obispo, Dept Chem, San Luis Obispo, CA 93407 USA.
EM pschwart@calpoly.edu
RI Weeks, Brandon/P-6331-2014
OI Weeks, Brandon/0000-0003-2552-4129
NR 25
TC 44
Z9 44
U1 2
U2 10
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD SEP 30
PY 2004
VL 108
IS 39
BP 15206
EP 15210
DI 10.1021/jp048177t
PG 5
WC Chemistry, Physical
SC Chemistry
GA 856UI
UT WOS:000224070200059
ER
PT J
AU Davis, RW
Patrick, EL
Meyer, LA
Ortiz, TP
Marshall, JA
Keller, DJ
Brozik, SM
Brozik, JA
AF Davis, RW
Patrick, EL
Meyer, LA
Ortiz, TP
Marshall, JA
Keller, DJ
Brozik, SM
Brozik, JA
TI Thermodynamic properties of single ion channel formation: Gramicidin
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID LIPID BILAYER-MEMBRANES; TRANSMEMBRANE CHANNEL; MOLECULE FLUORESCENCE;
PHOSPHOLIPID-VESICLES; A CHANNEL; INACTIVATION; CHOLESTEROL; MICROSCOPY;
LIFETIME; HELIX
AB Single molecule fluorescence imaging has been used to unequivocally differentiate between rhodamine-6G labeled gramicidin monomeric subunits and channel-forming dimers. Absolute identification of individual particles was achieved by accounting for both particle diffusion and intensity, with dimer intensity being twice that of the monomers. In accordance with current diffusion models of proteins in bilayer membranes, we observed dimers to diffuse more slowly through the bilayer than the monomers and have reported diffusion coefficients of 1.2 x 10(-8) and 3.5 x 10(-8) cm(2)/s for the dimers and monomers, respectively. By correlating the diffusion data with measured fluorescence intensities of the tracked particles, it was possible to determine the distribution of monomers and dimers within the bilayer at various temperatures. The results allow complete characterization of the thermodynamic properties of dimer formation, 2G(1) <----> G(2), necessary for channel function. Reported are the temperature-dependent equilibrium constants, DeltaH(Reaction)degrees, DeltaG(Reaction)degrees, DeltaS(Reaction)degrees, formation in an artificial lipid membrane that has a thickness (30 Angstrom) which is on the same order as the length of the gramicidin channel (26 Angstrom). These experiments compliment and expand single molecule fluorescence methods needed to understand the complexities of ion channel structure/function relationships.
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
Univ New Mexico, Dept Chem, Albuquerque, NM 87131 USA.
RP Brozik, SM (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM smbrozi@sandia.gov
NR 35
TC 8
Z9 8
U1 0
U2 5
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD SEP 30
PY 2004
VL 108
IS 39
BP 15364
EP 15369
DI 10.1021/jp049686y
PG 6
WC Chemistry, Physical
SC Chemistry
GA 856UI
UT WOS:000224070200079
ER
PT J
AU Leal, C
Topgaard, D
Martin, RW
Wennerstrom, H
AF Leal, C
Topgaard, D
Martin, RW
Wennerstrom, H
TI NMR studies of molecular mobility in a DNA-amphiphile complex
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID NUCLEAR-MAGNETIC-RESONANCE; LAMELLAR LIQUID-CRYSTALS; HIGH-RESOLUTION
NMR; CATIONIC SURFACTANT; PHASE-BEHAVIOR; SPECTROSCOPY; DIFFUSION;
SYSTEMS; MODEL; TRANSITION
AB The molecular mobility in a hexagonal DNA-cationic surfactant complex is studied using H-1 and C-13 nuclear magnetic resonance spectroscopy. The charge-compensated complex can swell in water up to a content of approximately seven water molecules per charge. The NMR measurements show that in the dry state the alkyl chains of the surfactant have the properties of a disordered solid with internal motions of sufficient amplitude to substantially narrow the H-1 resonance line from the rigid lattice limit. As water is introduced, there is an increase in molecular motion resulting in further narrowing of the signal. In the fully swollen system, the signal is narrower than that observed for a normal hexagonal liquid crystalline phase with the same surfactant. This shows that the alkyl chains are packed with a degree of disorder that is higher than in the corresponding liquid crystalline surfactant system, reflecting the aggregate deformations induced by the requirement of charge matching with DNA. Furthermore, the translational diffusional motion of the surfactant molecule is slower than D < 10(-13) m(2)/s, while for the water molecules we observe D going from 1 x 10(-11)m(2)/ s at 5 water molecules per base pair to 2 x 10(-10) m(2)/s at the swelling limit of 27 waters per base pair. The DNA remains solid throughout the hydration range. By combining the NMR observations with the thermodynamic characterization of the system by Leal et al.(1) we arrive at a detailed description of the molecular organization in the complex between DNA and the single chain cationic surfactant hexadecyltrimethylammonium, CTA.
C1 Lund Univ, S-22100 Lund, Sweden.
Univ Calif Berkeley, Div Mat Sci, Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
RP Leal, C (reprint author), Lund Univ, POB 124, S-22100 Lund, Sweden.
EM Cecilia.Leal@fkem1.lu.se; topgaard@waugh.cchem.berkeley.edu
NR 29
TC 15
Z9 15
U1 0
U2 5
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD SEP 30
PY 2004
VL 108
IS 39
BP 15392
EP 15397
DI 10.1021/jp0480495
PG 6
WC Chemistry, Physical
SC Chemistry
GA 856UI
UT WOS:000224070200083
ER
PT J
AU Otero, TF
Marquez, M
Suarez, IJ
AF Otero, TF
Marquez, M
Suarez, IJ
TI Polypyrrole: Diffusion coefficients and degradation by overoxidation
SO JOURNAL OF PHYSICAL CHEMISTRY B
LA English
DT Article
ID CONFORMATIONAL RELAXATION CONTROL; ELECTROCHEMICAL OXIDATION; CONDUCTING
POLYMERS; AQUEOUS-SOLUTIONS; DRUG-DELIVERY; FILMS; MODEL; REDOX;
ELECTRODE; BEHAVIOR
AB The electroactivity of electrogenerated polypyrrole films was degraded by applying consecutive anodic potential pulses (overoxidation). After each degradation step, the electroactivity of the material was recorded by voltammetric and chronoamperometric measurements. The charge consumed during each degradation step was calculated by the difference between the degradation and the control chronoamperograms. The diffusion coefficients of the counterions within the material were obtained from the control chronoamperograms by applying the electrochemically stimulated conformational-relaxation model. As the materials became increasingly degraded, slower oxidation processes were observed, and decreasing diffusion coefficients were obtained. These observations point to growing cross linking between neighboring polymeric chains during the degradation process, thus reducing conjugation lengths and increasing the rigidity of the conformational electro-chemo-stimulated movements on the chains. An electroactivity degradation of 50% induces a 15% increase in the weight of the material, pointing to the presence of rigid and oxidized islands entrapped by cross-linking points that prevent any ionic interchanges.
C1 Univ Politecn Cartagena, CEMI, Lab Electrochem Intelligents Mat & Devices, Murcia 30203, Spain.
Kraft Gen Foods Inc, Nanotechnol Lab, Glenview, IL 60025 USA.
Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA.
RP Otero, TF (reprint author), Univ Politecn Cartagena, CEMI, Lab Electrochem Intelligents Mat & Devices, Campus Alfonso 13, Murcia 30203, Spain.
EM toribio.fotero@upct.es; mmarquez@kraft.com; isuarez@ual.es
RI Suarez, Ivan/B-9022-2011; OTERO, TORIBIO/C-8348-2009
OI Suarez, Ivan/0000-0002-6327-2914; OTERO, TORIBIO/0000-0002-8517-1428
NR 34
TC 50
Z9 49
U1 1
U2 14
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1520-6106
J9 J PHYS CHEM B
JI J. Phys. Chem. B
PD SEP 30
PY 2004
VL 108
IS 39
BP 15429
EP 15433
DI 10.1021/jp0490608
PG 5
WC Chemistry, Physical
SC Chemistry
GA 856UI
UT WOS:000224070200088
ER
PT J
AU Geddes, CGR
Toth, C
van Tilborg, J
Esarey, E
Schroeder, CB
Bruhwiler, D
Nieter, C
Cary, J
Leemans, WP
AF Geddes, CGR
Toth, C
van Tilborg, J
Esarey, E
Schroeder, CB
Bruhwiler, D
Nieter, C
Cary, J
Leemans, WP
TI High-quality electron beams from a laser wakefield accelerator using
plasma-channel guiding
SO NATURE
LA English
DT Article
ID THOMSON SCATTERING; PULSES; INJECTION; GENERATION; WAVES; GASES
AB Laser-driven accelerators, in which particles are accelerated by the electric field of a plasma wave ( the wakefield) driven by an intense laser, have demonstrated accelerating electric fields of hundreds of GV m(-1) ( refs 1 - 3). These fields are thousands of times greater than those achievable in conventional radiofrequency accelerators, spurring interest in laser accelerators(4,5) as compact next-generation sources of energetic electrons and radiation. To date, however, acceleration distances have been severely limited by the lack of a controllable method for extending the propagation distance of the focused laser pulse. The ensuing short acceleration distance results in low-energy beams with 100 per cent electron energy spread(1-3), which limits potential applications. Here we demonstrate a laser accelerator that produces electron beams with an energy spread of a few per cent, low emittance and increased energy ( more than 10(9) electrons above 80 MeV). Our technique involves the use of a preformed plasma density channel to guide a relativistically intense laser, resulting in a longer propagation distance. The results open the way for compact and tunable high-brightness sources of electrons and radiation.
C1 Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Berkeley, CA 94720 USA.
Tech Univ Eindhoven, NL-5600 MB Eindhoven, Netherlands.
Tech X Corp, Boulder, CO 80303 USA.
Univ Colorado, Boulder, CO 80309 USA.
RP Leemans, WP (reprint author), Lawrence Berkeley Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM wpleemans@lbl.gov
NR 30
TC 1216
Z9 1242
U1 14
U2 121
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 30
PY 2004
VL 431
IS 7008
BP 538
EP 541
DI 10.1038/nature02900
PG 4
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 857YP
UT WOS:000224156700038
PM 15457252
ER
PT J
AU Iglesias, B
Cobas, A
Perez, D
Guitian, E
Vollhardt, KPC
AF Iglesias, B
Cobas, A
Perez, D
Guitian, E
Vollhardt, KPC
TI Tris(benzocyclobutadieno)triphenylene and its lower biphenylene
homologues by palladium-catalyzed cyclizations of
2,3-didehydrobiphenylene
SO ORGANIC LETTERS
LA English
DT Article
ID CHEMICAL-SHIFTS; HYDROCARBONS; COCYCLIZATION; HEXABENZOTRIPHENYLENE;
<7>PHENYLENE; DERIVATIVES; PHENYLENES; REACTIVITY; HELIPHENES; TOPOLOGY
AB The Pd-catalyzed cycloaddition of didehydrobiphenylenes 2a,b, generated from the corresponding 3-(trimethylsilyl)-2-biphenylenyl triflates with fluoride, furnishes the C-3-symmetric trimers 1a,b in which the embedded triphenylene unit is distorted to increase the aromaticity of the central benzene ring. Cocylization of 2a,b with dimethyl acetylenedicarboxylate provides the phenanthrene- and naphthalenecarboxylic ester analogues, depending on the catalyst used.
C1 Univ Calif Berkeley, Dept Chem, Ctr New Direct Organ Synth, Berkeley, CA 94720 USA.
Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA.
Univ Santiago de Compostela, Dept Quim Organ, Santiago De Compostela 15782, Spain.
RP Iglesias, B (reprint author), Univ Calif Berkeley, Dept Chem, Ctr New Direct Organ Synth, Berkeley, CA 94720 USA.
EM qodolopm@usc.es; kpcv@berkeley.edu
RI Perez, Dolores/J-6588-2015; Guitian, Enrique/H-9018-2015
OI Perez, Dolores/0000-0003-0877-5938; Guitian, Enrique/0000-0003-4785-3812
NR 32
TC 32
Z9 32
U1 1
U2 6
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1523-7060
J9 ORG LETT
JI Org. Lett.
PD SEP 30
PY 2004
VL 6
IS 20
BP 3557
EP 3560
DI 10.1021/ol048548o
PG 4
WC Chemistry, Organic
SC Chemistry
GA 857JH
UT WOS:000224112000033
PM 15387547
ER
PT J
AU Hou, JW
Wilder, PJ
Bernadt, CT
Boer, B
Neve, RM
Rizzino, A
AF Hou, JW
Wilder, PJ
Bernadt, CT
Boer, B
Neve, RM
Rizzino, A
TI Transcriptional regulation of the murine Elf3 gene in embryonal
carcinoma cells and their differentiated counterparts: requirement for a
novel upstream regulatory region
SO GENE
LA English
DT Article
DE Ets proteins; differentiation; gene regulation; distal enhancer; ESX;
ESE1; ERT; Jen
ID II RECEPTOR EXPRESSION; GENOMIC ORGANIZATION; PROMOTER ELEMENTS; ETS
FAMILY; KAPPA-B; EPITHELIUM; CANCER; ESE-1; INDUCTION; SEQUENCES
AB The transcription factor Elf3, which is one of over 25 Ets family members, is expressed in a wide variety of carcinomas and has been shown to promote the transcription of many genes implicated in cancer. To understand how the Elf3 gene is regulated at the transcriptional level, we probed its 5'-flanking region, and we report here the identification of both proximal and distal regions that regulate murine Elf3 promoter activity. In addition to mapping the transcription start site of the Elf3 gene, the work described in this study identifies four cis-regulatory elements in the proximal promoter region of the gene. These include a cis-regulatory element previously designated ESE, a kappaB site, a POU motif, and a CCAAT box. In addition, we demonstrate that a novel 94 bp region 2 kb upstream of the transcription start site significantly elevates Elf3 promoter activity in F9-differentiated cells, but not in the parental F9 embryonal carcinoma (EC) cells. This region appears to be largely responsible for the increase in Elf3 promoter activity that accompanies the differentiation of embryonal carcinoma cells. (C) 2004 Elsevier B.V. All rights reserved.
C1 Univ Nebraska, Med Ctr, Eppley Inst Res Canc & Allied Dis, Lincoln, NE 68583 USA.
Univ Nebraska, Med Ctr, Dept Pathol & Microbiol, Lincoln, NE 68583 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA.
RP Rizzino, A (reprint author), Nebraska Med Ctr, Eppley Inst Res Canc & Allied Dis, Omaha, NE 68198 USA.
EM arizzino@unmc.edu
FU NCI NIH HHS [CA 74771, CA 36727]
NR 24
TC 4
Z9 4
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 0378-1119
J9 GENE
JI Gene
PD SEP 29
PY 2004
VL 340
IS 1
BP 123
EP 131
DI 10.1016/j.gene.2004.06.007
PG 9
WC Genetics & Heredity
SC Genetics & Heredity
GA 860RA
UT WOS:000224359500012
PM 15556300
ER
PT J
AU Feldman, WC
Head, JW
Maurice, S
Prettyman, TH
Elphic, RC
Funsten, HO
Lawrence, DJ
Tokar, RL
Vaniman, DT
AF Feldman, WC
Head, JW
Maurice, S
Prettyman, TH
Elphic, RC
Funsten, HO
Lawrence, DJ
Tokar, RL
Vaniman, DT
TI Recharge mechanism of near-equatorial hydrogen on Mars: Atmospheric
redistribution or sub-surface aquifer
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
ID GLOBAL DISTRIBUTION; MARTIAN GULLIES; WATER-VAPOR; GROUND ICE; SURFACE;
ODYSSEY; BEHAVIOR; DEPOSITS; MODEL
AB The geographical distribution of water-equivalent-hydrogen (WEH) near the equator of Mars was compared with the topography and distribution of atmospheric water vapor to constrain possible recharge mechanisms of near-surface water (<1 m of the surface). Recharge through a subsurface conduit provided by an aquifer, although possible, seems less likely than recharge through the atmosphere. Although the spatial distribution of WEH does not correspond to the current distribution of water vapor in the atmosphere, several terrestrial analogs indicate that dynamics of atmospheric circulation during periods of higher obliquity prior to the present epoch can qualitatively account for the observed WEH distribution.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
Brown Univ, Dept Geol Sci, Providence, RI 02912 USA.
CESR OMP, F-31400 Toulouse, France.
RP Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM wfeldman@lanl.gov
RI Funsten, Herbert/A-5702-2015; Lawrence, David/E-7463-2015
OI Funsten, Herbert/0000-0002-6817-1039; Lawrence,
David/0000-0002-7696-6667
NR 23
TC 27
Z9 27
U1 0
U2 2
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0094-8276
EI 1944-8007
J9 GEOPHYS RES LETT
JI Geophys. Res. Lett.
PD SEP 29
PY 2004
VL 31
IS 18
AR L18701
DI 10.1029/2004GL020661
PG 4
WC Geosciences, Multidisciplinary
SC Geology
GA 861HY
UT WOS:000224408400004
ER
PT J
AU Kawa, SR
Erickson, DJ
Pawson, S
Zhu, Z
AF Kawa, SR
Erickson, DJ
Pawson, S
Zhu, Z
TI Global CO2 transport simulations using meteorological data from the NASA
data assimilation system
SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
LA English
DT Article
DE carbon dioxide; data assimilation
ID ATMOSPHERIC CARBON-DIOXIDE; COMMUNITY CLIMATE MODEL; REFLECTED SUNLIGHT;
INTERANNUAL VARIABILITY; SATELLITE-OBSERVATIONS; SOURCE INVERSIONS;
SEASONAL CYCLE; NORTH-AMERICA; SINKS; SENSITIVITY
AB [ 1] We present a first analysis of atmospheric CO2 transport using meteorological data from the NASA finite volume data assimilation system (FVDAS). The analyzed meteorological fields are used along with climatological surface sources and sinks in an off-line, forward transport simulation for 1998 - 2000. Analysis of model diagnostics and comparisons to previous results indicates that the model performance is consistent with that of most previous global transport models. The model interhemispheric gradients along with the timing and magnitude of the CO2 seasonal cycle are discussed, providing inferences regarding the northern biosphere, tropical land, and southern ocean fluxes. Global distributions of column-integrated CO2 are presented to provide a basis for measurement requirements for the design of satellite-based instruments for atmospheric CO2 column. On the synoptic scale we find a significant benefit in using the FVDAS analyzed winds for comparisons to data. At near-equatorial observation sites, the model correctly simulates the observed atmospheric composition transition associated with the latitudinal movement of the ITCZ. Comparison to daily data from continuous analyzer sites shows the model captures a substantial amount of the observed synoptic variability due to transport changes. These results show the potential to use high temporal and spatial resolution remote sensing data to constrain CO2 surface fluxes, and they form the starting point for developing an operational CO2 assimilation system to produce high-resolution distributions of atmospheric CO2 and quantitative estimates of the global carbon budget.
C1 NASA, Goddard Space Flight Ctr, Global Modeling & Assimilat Off, Greenbelt, MD 20771 USA.
Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
Goddard Earth Sci & Technol Ctr, Baltimore, MD 20771 USA.
Sci Syst & Applicat Inc, Lanham, MD 20706 USA.
RP NASA, Goddard Space Flight Ctr, Global Modeling & Assimilat Off, Greenbelt, MD 20771 USA.
EM stephan.r.kawa@nasa.gov
RI Kawa, Stephan/E-9040-2012; Pawson, Steven/I-1865-2014
OI Pawson, Steven/0000-0003-0200-717X
NR 53
TC 61
Z9 61
U1 0
U2 11
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-897X
EI 2169-8996
J9 J GEOPHYS RES-ATMOS
JI J. Geophys. Res.-Atmos.
PD SEP 29
PY 2004
VL 109
IS D18
AR D18312
DI 10.1029/2004JD004554
PG 17
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 861IG
UT WOS:000224409200004
ER
PT J
AU Marchand, R
Ackerman, T
AF Marchand, R
Ackerman, T
TI Evaluation of radiometric measurements from the NASA Multiangle Imaging
Spectroradiometer (MISR): Two- and three-dimensional radiative transfer
modeling of an inhomogeneous stratocumulus cloud deck
SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
LA English
DT Article
DE 3-D radiative transfer; satellite remote sensing; satellite calibration
ID OPTICAL DEPTH; RETRIEVALS; SURFACE; ANGLE; VALIDATION; SCALE; RADAR
AB [ 1] In December 1999, NASA launched the Terra satellite. This platform carries five instruments that measure important properties of the Earth climate system. One of these instruments is the Multiangle Imaging Spectroradiometer, or MISR. This instrument measures light reflected from the Earth at a spatial resolution of 275 - 1100 m, at four wavelengths ( 446, 558, 672, and 866 nm), and at nine different viewing angles that vary from + 70 to - 70 degrees along the direction of flight [ Diner et al., 2002]. These multiangle data have the potential to provide information on aerosols, surface, and cloud characteristics that compliments traditional single-view-direction satellite measurements. Before this potential can be realized, the accuracy of the satellite radiance measurements must be carefully assessed, and the implications of the radiometric accuracy on remote-sensing algorithms must be evaluated. In this article, we compare MISR multiangle measurements against two-dimensional (2-D) and 3-D radiative transfer calculations from an inhomogeneous cloud scene. Inputs to the radiative transfer code are based entirely on independently gathered data ( ground-based radar, lidar, microwave radiometer, in situ aircraft data, etc.). The 2-D radiative transfer calculations compare favorably near nadir and in most of the forward scattering directions, but differ by as much as 10% in the backscattering directions. Using 3-D radiative transfer modeling, we show that this difference is due to the 3-D structure of the cloud deck, including variations in the cloud top height on scales less than 275 m, which are not resolved in the 2-D simulations. Comparison of the 2-D calculations to the MISR measurements, after accounting for the 3-D structure, show residual differences that are less than 4% at all angles at the MISR blue and green wavelengths. The comparison also reveals that the MISR measurements at the red and near-infrared wavelengths are too bright relative to measurements in the blue and green bands. On the basis of the results of this study, along with results from five other comparisons, the MISR calibration is being adjusted to reduce the red and near-infrared radiances.
C1 Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Marchand, R (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
EM roj@pnl.gov
NR 24
TC 9
Z9 10
U1 0
U2 4
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-897X
J9 J GEOPHYS RES-ATMOS
JI J. Geophys. Res.-Atmos.
PD SEP 29
PY 2004
VL 109
IS D18
AR D18208
DI 10.1029/2004JD004710
PG 13
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 861IG
UT WOS:000224409200009
ER
PT J
AU Massie, ST
Torres, O
Smith, SJ
AF Massie, ST
Torres, O
Smith, SJ
TI Total Ozone Mapping Spectrometer (TOMS) observations of increases in
Asian aerosol in winter from 1979 to 2000
SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
LA English
DT Article
DE aerosol; regional pollution; decadal trends
ID SULFUR-DIOXIDE EMISSIONS; INDIAN-OCEAN EXPERIMENT; LONG-RANGE TRANSPORT;
AIR-POLLUTION; CLIMATIC CONTROL; ACID DEPOSITION; NORTH-AMERICA; YELLOW
SAND; DUST STORMS; TERM RECORD
AB [1] Emission inventories indicate that the largest increases in SO2 emissions have occurred in Asia during the last 20 years. By inference, the largest increases in aerosol, produced primarily by the conversion of SO2 to sulfate, should have occurred in Asia during the same time period. Decadal changes in regional aerosol optical depths are calculated by analyzing Total Ozone Mapping Spectrometer ( TOMS) vertical aerosol optical depths ( converted to 550 nm) from 1979 to 2000 on a 1degrees by 1degrees global grid. The anthropogenic component of the TOMS aerosol record is maximized by examining the seasonal cycles of desert dust and boreal fire smoke and identifying the months of the year for which the desert dust and boreal fire smoke are least conspicuous. Gobi and Taklimakan desert dust in Asia is prevalent in the TOMS record during spring, and eastern Siberian smoke from boreal forest fires is prevalent during summer. Aerosol trends are calculated on a regional basis during winter ( November - February) to maximize the anthropogenic component of the aerosol record. Large increases in aerosol optical depths between 1979 and 2000 are present over the China coastal plain and the Ganges River basin in India. Aerosol increased by 17% per decade during winter over the China coastal plain, while SO2 emissions over the same geographical region increased by 35% per decade.
C1 Natl Ctr Atmospher Res, Boulder, CO 80307 USA.
Univ Maryland Baltimore Cty, Joint Ctr Earth Syst Technol, Baltimore, MD 21250 USA.
JGCRI, Pacific NW Natl Lab, College Pk, MD 20742 USA.
RP Natl Ctr Atmospher Res, 1850 Table Mesa Dr, Boulder, CO 80307 USA.
EM massie@acd.ucar.edu
RI Torres, Omar/G-4929-2013
NR 48
TC 77
Z9 78
U1 0
U2 5
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-897X
EI 2169-8996
J9 J GEOPHYS RES-ATMOS
JI J. Geophys. Res.-Atmos.
PD SEP 29
PY 2004
VL 109
IS D18
AR D18211
DI 10.1029/2004JD004620
PG 14
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 861IG
UT WOS:000224409200006
ER
PT J
AU Maxwell-Meier, K
Weber, R
Song, C
Orsini, D
Ma, Y
Carmichael, GR
Streets, DG
AF Maxwell-Meier, K
Weber, R
Song, C
Orsini, D
Ma, Y
Carmichael, GR
Streets, DG
TI Inorganic composition of fine particles in mixed mineral dust-pollution
plumes observed from airborne measurements during ACE-Asia
SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
LA English
DT Article
DE Asian dust; fine particles; ion chemistry
ID GAS-AEROSOL EQUILIBRIUM; TRACE-P EXPERIMENT; SEA-SALT; HETEROGENEOUS
REACTIONS; CHEMICAL EVOLUTION; TEMPERATURE-DEPENDENCE; CONTINENTAL
OUTFLOW; TRANSPORT; SULFATE; NITRATE
AB [1] Chemical characteristics of inorganic water-soluble aerosol particles measured in large Asian springtime dust events during the Asian Pacific Regional Characterization Experiment (ACE-Asia) were investigated. Three specific flights ( flights 6, 7, and 10) in the Yellow Sea boundary layer with high mineral dust concentrations mixed with pollutants from Asian urban centers are presented. Measurements during a similar campaign, Transport and Chemical Evolution over the Pacific (TRACE-P), in the same region suggested that fine-particle ammonium sulfate and nitrate salts, and potassium, apparently from biomass burning, are common particle ionic constituents in polluted air. Observations from the ACE campaign show similar characteristics and found that the main component of water-soluble mineral dust was Mg2+ and Ca2+. Ion charge balances of measured fine and total aerosol suggest that a significant fraction of the Mg2+ and Ca2+ observed were in the form of carbonates. In polluted air mixed with dust that advected directly from large urban regions in roughly half a day to 1 day ( flights 6 and 7), much of the fine-particle nitrate and sulfate ( approximately 80%) was apparently associated with ammonium or potassium, the rest likely associated with mineral dust. Only air masses that spent 2 - 5 days over the Yellow Sea ( flight 10) had clear evidence of Cl- depletion. Initial mass accommodation coefficients much less than 0.1 for uptake of SO2 or HNO3 by mineral dust in urban plumes containing fossil fuel and biomass-burning emissions could explain the observations. The data suggest an accommodation coefficient dependence on relative humidity.
C1 Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA.
Univ Iowa, Ctr Global & Reg Environm Res, Iowa City, IA 52242 USA.
Argonne Natl Lab, Argonne, IL 60439 USA.
RP Maxwell-Meier, K (reprint author), Georgia Inst Technol, Sch Earth & Atmospher Sci, 221 Boddy Dodd Way, Atlanta, GA 30332 USA.
EM kmaxwell@eas.gatech.edu; rweber@eas.gatech.edu; cs222@prism.gatech.edu;
douglas.orsini@eas.gatech.edu; yma@eas.gatech.edu; dstreets@anl.gov
OI Streets, David/0000-0002-0223-1350
NR 50
TC 57
Z9 59
U1 1
U2 8
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-897X
J9 J GEOPHYS RES-ATMOS
JI J. Geophys. Res.-Atmos.
PD SEP 29
PY 2004
VL 109
IS D19
AR D19S07
DI 10.1029/2003JD004464
PG 20
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 861IH
UT WOS:000224409300001
ER
PT J
AU Weisenstein, DK
Eluszkiewicz, J
Ko, MKW
Scott, CJ
Jackman, CH
Fleming, EL
Considine, DB
Kinnison, DE
Connell, PS
Rotman, DA
AF Weisenstein, DK
Eluszkiewicz, J
Ko, MKW
Scott, CJ
Jackman, CH
Fleming, EL
Considine, DB
Kinnison, DE
Connell, PS
Rotman, DA
TI Separating chemistry and transport effects in two-dimensional models
SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
LA English
DT Article
DE modeling; stratosphere; aircraft
ID PLANETARY WAVE BREAKING; STRATOSPHERIC CLOUD PARAMETERIZATION;
INITIATIVE ASSESSMENT MODEL; MULTIPLE-SCATTERING; MIDDLE ATMOSPHERE;
OZONE DEPLETION; GRAVITY-WAVE; AIRCRAFT; SIMULATIONS; RADIATION
AB [ 1] Representation of transport in numerical models is known to be a major uncertainty in modeling of the atmosphere. Models also differ in their treatment of gas phase and heterogeneous chemistry. This paper will describe a quantitative approach to diagnosing the source of intermodel differences in ozone assessment calculations. Our approach is applied to diagnosing the differences between two-dimensional (2-D) models from Atmospheric and Environmental Research, the NASA Goddard Space Flight Center, and the Lawrence Livermore National Laboratory. Surprisingly, we find that differences due to chemical formulation are often as large as those due to transport, despite the fact that all models use the same set of reaction rate coefficients. These differences are particularly large when polar stratospheric cloud (PSC) processes are included in the models, though differences due to photolysis rates and details of the sulfate chemistry are also apparent. Perturbation calculations for a scenario including supersonic commercial aircraft operating in the 2015 stratosphere reveal that differences in the accumulation of H2O and NOy emitted by aircraft are due almost entirely to transport, while differences in ozone due to chemical formulation are evident in the lower stratosphere even without differences in H2O and NOy and without PSCs. By demonstrating a capability of separating transport and chemical differences, it is hoped that the results described in this paper will stimulate analogous studies with other models and will thus lead to a deeper understanding of intermodel similarities and differences, along with a means to quantify uncertainties in model predictions of atmospheric response to perturbations.
C1 Atmospher & Environm Res Inc, Lexington, MA 02421 USA.
NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Sci Syst & Applicat Inc, Lanham, MD USA.
RP Weisenstein, DK (reprint author), Atmospher & Environm Res Inc, 131 Hartwell Ave, Lexington, MA 02421 USA.
EM dkweis@aer.com; jel@aer.com; malcolm.k.ko@nasa.gov; scott@aer.com;
charles.h.jackman@nasa.gov; fleming@kahuna.gsfc.nasa.gov;
david.b.considine@nasa.gov; dkin@ucar.edu; connell2@llnl.gov;
rotman1@llnl.gov
RI Jackman, Charles/D-4699-2012; Ko, Malcolm/D-5898-2015
NR 42
TC 11
Z9 11
U1 0
U2 3
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 2169-897X
J9 J GEOPHYS RES-ATMOS
JI J. Geophys. Res.-Atmos.
PD SEP 29
PY 2004
VL 109
IS D18
AR D18310
DI 10.1029/2004JD004744
PG 26
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 861IG
UT WOS:000224409200011
ER
PT J
AU Govindaswamy, P
Mozharivskyj, YA
Kollipara, MR
AF Govindaswamy, P
Mozharivskyj, YA
Kollipara, MR
TI Reactivity studies of (eta(6)-arene)ruthenium dimeric complexes towards
pyrazoles: isolation of amidines, bis pyrazoles and chloro bridged
pyrazole complexes
SO JOURNAL OF ORGANOMETALLIC CHEMISTRY
LA English
DT Article
DE p-cymene; hexamethylbenzene; pyrazoles; amidine; ruthenium
ID X-RAY STRUCTURE; RUTHENIUM(II) ARENE COMPLEXES; CRYSTAL-STRUCTURE;
COORDINATION CHEMISTRY; TRANSFER HYDROGENATION; HOMOGENEOUS CATALYSIS;
MOLECULAR-STRUCTURES; LIGANDS; DERIVATIVES; RING
AB The complex [(eta(6)-p-cymene)Ru(mu-Cl)Cl](2) 1 reacts with pyrazole ligands (3a-g) in acetonitrile to afford the amidine derivatives of the type [(eta(6)-p-eymene)Ru(L)(3,5-HRR'pz)](BF4)(2) (4a-f), where L = {HN=C(Me)3,5-RR'pz}; R, R' = H (4a); H, CH3 (4b); C6H5 (4c); CH3, C6H5 (4d) OCH3 (4c); and OC2H5 (4f), respectively. The ligand L is generated in situ through the condensation of 3,5-HRR'pz with acetonitrile under the influence of [(eta(6)-p-cymene)RuCl2](2). The complex [(eta(6)-C6Me6)Ru(p-Cl)Cl](2) 2 reacts with pyrazole ligands in acetonitrile to yield bis-pyrazole derivatives such as [(eta(6)-C6Me6)Ru (3,5-HRR'pz)(2)Cl](BF4) (5a-b), where R, R' = H (5a); H, CH3 (5b), as well as dimeric complexes of pyrazole substituted chloro bridged derivatives [{(eta(6)-C6Me6)Ru(mu-Cl) (3,5-HRR'pz)}(2)](BF4)(2) (5c-g), where R, R'= CH3 (5c); C6H5 (5d); CH3, C6H5 (5e); OCH3 (5f); and OC2H5 (5g), respectively. These complexes were characterized by FT-IR and FT-NMR spectroscopy as well as analytical data. The molecular structures I of representative complexes [(eta(6)-C6Me6)Ru{3(5)-Hmpz}(2)Cl](+) 5b, [(eta(6)-C6Me6)Ru(mu-Cl)(3,5-Hdmpz)](2)(2+) 5c and [(eta(6)-C6Me6)Ru(muCl) {3(5)Me,5(3)Ph-Hpz}](2)(2+) 5e were established by single crystal X-ray diffraction studies. (C) 2004 Elsevier B.V. All rights reserved.
C1 NE Hill Univ, Dept Chem, Shillong 793022, Meghalaya, India.
Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA.
RP Kollipara, MR (reprint author), NE Hill Univ, Dept Chem, Shillong 793022, Meghalaya, India.
EM kmrao@nehu.ac.in
NR 71
TC 42
Z9 42
U1 1
U2 6
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0022-328X
J9 J ORGANOMET CHEM
JI J. Organomet. Chem.
PD SEP 29
PY 2004
VL 689
IS 20
BP 3265
EP 3274
DI 10.1016/j.jorganchem.2004.07.036
PG 10
WC Chemistry, Inorganic & Nuclear; Chemistry, Organic
SC Chemistry
GA 858VY
UT WOS:000224221500018
ER
PT J
AU Pietryga, JM
Schaller, RD
Werder, D
Stewart, MH
Klimov, VI
Hollingsworth, JA
AF Pietryga, JM
Schaller, RD
Werder, D
Stewart, MH
Klimov, VI
Hollingsworth, JA
TI Pushing the band gap envelope: Mid-infrared emitting colloidal PbSe
quantum dots
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID OPTICAL-PROPERTIES; NANOCRYSTALS; WELLS
C1 Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA.
RP Hollingsworth, JA (reprint author), Los Alamos Natl Lab, Div Chem, POB 1663, Los Alamos, NM 87545 USA.
NR 11
TC 272
Z9 275
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 29
PY 2004
VL 126
IS 38
BP 11752
EP 11753
DI 10.1021/ja047659f
PG 2
WC Chemistry, Multidisciplinary
SC Chemistry
GA 857GH
UT WOS:000224103900001
PM 15382884
ER
PT J
AU Colligan, M
Forster, PM
Cheetham, AK
Lee, Y
Vogt, T
Hriljac, JA
AF Colligan, M
Forster, PM
Cheetham, AK
Lee, Y
Vogt, T
Hriljac, JA
TI Synchrotron X-ray powder diffraction and computational investigation of
purely siliceous zeolite Y under pressure
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID NEGATIVE THERMAL-EXPANSION; HYDRATED ZEOLITE; NA-A;
HYDROSTATIC-PRESSURE; STRUCTURAL BEHAVIOR; ALPHA-QUARTZ; LI-A; RHO;
COMPRESSIBILITY; AMORPHIZATION
AB High-pressure synchrotron X-ray powder diffraction measurements of a sample of purely siliceous zeolite Y (faujasite) were carried out up to 8.0 GPa at room temperature using a diamond anvil cell. Measurements using silicone oil as the pressure-transmitting medium show compression of the zeolite followed by a loss of long-range ordering at 2.2 GPa. The experimentally determined bulk modulus, 38(2) GPa, is, within experimental error, identical to that of quartz. When using a methanol:ethanol:water mixture (16:3:1) as the pressure-transmitting medium, two distinct compressibility regions are observed with a dramatic change in the compression mechanism at 4 GPa. Rietveld refinement analysis of the powder patterns provides a detailed description of the underlying chemistry, with sequential pore filling the main response up to 4 GPa and framework distortions at higher pressures.
C1 Univ Birmingham, Sch Chem, Birmingham B15 2TT, W Midlands, England.
Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
Univ Calif Santa Barbara, Mat Res Lab, Santa Barbara, CA 93106 USA.
RP Hriljac, JA (reprint author), Univ Birmingham, Sch Chem, POB 363, Birmingham B15 2TT, W Midlands, England.
EM j.a.hriljac@bham.ac.uk
RI Vogt, Thomas /A-1562-2011; Lee, Yongjae/K-6566-2016;
OI Vogt, Thomas /0000-0002-4731-2787; Forster, Paul/0000-0003-3319-4238
NR 47
TC 62
Z9 62
U1 4
U2 29
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 29
PY 2004
VL 126
IS 38
BP 12015
EP 12022
DI 10.1021/ja048685g
PG 8
WC Chemistry, Multidisciplinary
SC Chemistry
GA 857GH
UT WOS:000224103900053
PM 15382936
ER
PT J
AU Franco, I
Tretiak, S
AF Franco, I
Tretiak, S
TI Electron-vibrational dynamics of photoexcited polyfluorenes
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID RANDOM PHASE APPROXIMATION; LIGHT-EMITTING POLYMERS; ELECTROLUMINESCENT
CONJUGATED POLYMERS; DENSITY-FUNCTIONAL THEORY; FLUORENE-BASED
COPOLYMERS; STATE MOLECULAR-DYNAMICS; DEPENDENT HARTREE-FOCK;
EXCITATION-ENERGIES; EXCITED-STATES; NONEMPIRICAL CALCULATIONS
AB The highly polarizable pi-electron system of conjugated molecules forms the basis for their unique electronic and photophysical properties, which play an important role in numerous biological phenomena and make them important materials for technological applications. We present a theoretical investigation of the dynamics and relaxation of photoexcited states in conjugated polyfluorenes, which are promising materials for display applications. Our analysis shows that both fast (similar to20 fs) and slow (similar to1 ps) nuclear motions couple to the electronic degrees of freedom during the excited-state dynamics. Delocalized excitations dominate the absorption, whereas emission comes from localized (self-trapped) excitons. This localization is attributed to an inherent nonlinear coupling among vibronic degrees of freedom which leads to lattice and torsional distortions and results in specific signatures in spectroscopic observables. Computed vertical absorption and fluorescence frequencies as well as photoluminescence band shapes show good agreement with experiment. Finally, we demonstrate that dimerization such as spiro-linking does not affect the emission properties of molecules because the excitation becomes confined on a single chain of the composite molecule.
C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
Univ Toronto, Dept Chem, Chem Phys Theory Grp, Toronto, ON M5S 3H6, Canada.
RP Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
EM serg@cnls.lanl.gov
RI Tretiak, Sergei/B-5556-2009; Franco, Ignacio/C-4819-2009
OI Tretiak, Sergei/0000-0001-5547-3647; Franco, Ignacio/0000-0002-0802-8185
NR 84
TC 76
Z9 76
U1 2
U2 14
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 29
PY 2004
VL 126
IS 38
BP 12130
EP 12140
DI 10.1021/ja0489285
PG 11
WC Chemistry, Multidisciplinary
SC Chemistry
GA 857GH
UT WOS:000224103900066
PM 15382949
ER
PT J
AU Luchansky, SJ
Argade, S
Hayes, BK
Bertozzi, CR
AF Luchansky, SJ
Argade, S
Hayes, BK
Bertozzi, CR
TI Metabolic functionalization of recombinant glycoproteins
SO BIOCHEMISTRY
LA English
DT Article
ID ERYTHROPOIETIN FUSION PROTEIN; TRANSFER-RNA SYNTHETASE; IN-VIVO
INCORPORATION; CELL-SURFACE; SIALIC-ACID; L-SELECTIN; STAUDINGER
LIGATION; GLCNAC 2-EPIMERASE; ENDOTHELIAL LIGAND; INTERFERON-BETA
AB Glycoproteins are essential for cellular communication and are the most rapidly growing class of therapeutic agents. Chemical modification of glycoproteins has been employed to improve their in vivo efficacy or to label them for detection. Methods for the controlled derivatization of glycoproteins are presently limited by the repertoire of natural amino acid side chain and carbohydrate functionalities. Here, we use metabolic oligosaccharide engineering to introduce a bioorthogonal functional group, the azide, into cellular and recombinant glycoproteins for subsequent chemical elaboration via Staudinger ligation. As most therapeutic glycoproteins are sialylated and require this saccharide for optimal pharmacokinetics, we targeted sialic acid as a host for azides using N-azidoacetylmannosamine (ManNAz) as a biosynthetic precursor. Metabolic conversion of ManNAz to N-azidoacetylsialic acid (SiaNAz) within membrane-bound and secreted glycoproteins was quantified in a variety of cell types. SiaNAz was found to comprise between 4% and 41% of total sialosides, depending on the system. Metabolic labeling of recombinant interferon-beta and G1yCAM-Ig was achieved, demonstrating the utility of the method for functionalizing N-linked and O-linked glycoproteins of therapeutic interest. More generally, the generation of recombinant glycoproteins containing chemical handles within their glycans provides a means for studying their behavior and for improving their in vivo efficacy.
C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA.
Univ Calif Berkeley, Howard Hughes Med Inst, Berkeley, CA 94720 USA.
Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
Univ Calif San Diego, Glycotechnol Core Resource Facil, La Jolla, CA 92093 USA.
RP Bertozzi, CR (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
EM crb@berkeley.edu
FU NIGMS NIH HHS [GM58867]
NR 54
TC 51
Z9 52
U1 3
U2 24
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 28
PY 2004
VL 43
IS 38
BP 12358
EP 12366
DI 10.1021/bi049274f
PG 9
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 856GE
UT WOS:000224032900044
PM 15379575
ER
PT J
AU Yu, SW
Stolte, WC
Guillemin, R
Ohrwall, G
Tran, IC
Piancastelli, MN
Feng, R
Lindle, DW
AF Yu, SW
Stolte, WC
Guillemin, R
Ohrwall, G
Tran, IC
Piancastelli, MN
Feng, R
Lindle, DW
TI Photofragmentation study of core-excited NO
SO JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
LA English
DT Article
ID K-SHELL PHOTOABSORPTION; HIGH-RESOLUTION; ANIONIC PHOTOFRAGMENTATION;
FRAGMENTATION PROCESSES; EXCITATION-SPECTRA; PHOTOIONIZATION; MOLECULES;
SPECTROSCOPY; RESONANCES
AB The production of anionic and cationic fragments of NO has been measured after photoexcitation in the vicinity of the nitrogen Is threshold. The partial ion yield for the anionic fragment O-, in conjunction with the partial cation yields, can clearly distinguish the shape resonances from doubly excited states. On the N 1s --> pi* resonances, which are composed of the three intermediate states (2)Delta, (2)Sigma(-) and (2)Sigma(+), in the order of increasing photon energy, the intensity ratios for the NO++, O+ and O++ fragments are very different from the total ion yield. An explanation for this behaviour in terms of symmetry is proposed.
C1 Univ Nevada, Dept Chem, Las Vegas, NV 89154 USA.
Lawrence Berkeley Natl Lab, Ctr XRay Opt, Berkeley, CA 94720 USA.
Uppsala Univ, Dept Phys, SE-75121 Uppsala, Sweden.
Univ Roma Tor Vergata, Dept Chem Sci & Technol, I-00133 Rome, Italy.
Alberta Synchrotron Inst, Edmonton, AB T6G 2E1, Canada.
RP Yu, SW (reprint author), Univ Nevada, Dept Chem, Las Vegas, NV 89154 USA.
EM SWYu@LBL.GOV
RI Tran, Ich/C-9869-2014
NR 25
TC 22
Z9 22
U1 0
U2 7
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 0953-4075
J9 J PHYS B-AT MOL OPT
JI J. Phys. B-At. Mol. Opt. Phys.
PD SEP 28
PY 2004
VL 37
IS 18
BP 3583
EP 3592
AR PII S0953-4075(04)80850-2
DI 10.1088/0953-4075/37/18/003
PG 10
WC Optics; Physics, Atomic, Molecular & Chemical
SC Optics; Physics
GA 863CA
UT WOS:000224536600003
ER
PT J
AU Coffman, EA
Melechko, AV
Allison, DP
Simpson, ML
Doktycz, MJ
AF Coffman, EA
Melechko, AV
Allison, DP
Simpson, ML
Doktycz, MJ
TI Surface patterning of silica nanostructures using bio-inspired templates
and directed synthesis
SO LANGMUIR
LA English
DT Article
ID BIOMIMETIC SYNTHESIS; ACID POLYMERIZATION; IN-VITRO; SILICIFICATION;
BIOSILICIFICATION; PEPTIDES; POLYAMINES; BIOSILICA; PH
AB Natural systems excel in directing the synthesis of inorganic materials for various functional purposes. One of the best-studied systems is silica synthesis, as occurs in diatoms and marine sponges. Various biological and synthetic polymers have been shown to template and catalyze silica formation from silicic acid precursors. Here, we describe the use of poly-L-lysine to promote the synthesis of silica in neutral, aqueous solution and when immobilized onto a silicon support structure under similar conditions. Either reagent jetting or conventional photolithography techniques can be used to pattern the templating polymer. Spots created by reagent jetting led to the creation of silica structures in the shape of a ring that may be a result of the spotting process. Photolithographically defined poly-L-lysine spots led to thin laminate structures after exposure to a dilute aqueous silicic acid solution. The laminate structures were nanostructured and highly interconnected. Photolithographic patterning of (3-aminopropyl)trimethoxysilane, a reagent that mimics the lysine functional group, led to similar silica coatings even though low-molecular-weight materials do not rapidly promote silica synthesis in solution. This result highlights the importance of functional-group arrangement for templating and promoting the synthesis of inorganic materials. The described surface-patterning techniques offer a route to integrate conventional silicon-patterning technologies with biologically based material synthesis. Such combined fabrication techniques enable controlled assembly over multiple length scales and an approach to understanding interfacial silica synthesis, as occurs in natural systems.
C1 Oak Ridge Natl Lab, Div Life Sci, Oak Ridge, TN 37831 USA.
Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA.
Univ Tennessee, Knoxville, TN 37996 USA.
RP Doktycz, MJ (reprint author), Oak Ridge Natl Lab, Div Life Sci, POB 2008, Oak Ridge, TN 37831 USA.
EM doktyczmj@ornl.gov
RI Melechko, Anatoli/B-8820-2008; Doktycz, Mitchel/A-7499-2011; Simpson,
Michael/A-8410-2011; Sanguansri, Luz/B-6630-2011
OI Doktycz, Mitchel/0000-0003-4856-8343; Simpson,
Michael/0000-0002-3933-3457; Sanguansri, Luz/0000-0003-1908-7604
NR 29
TC 54
Z9 54
U1 2
U2 23
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD SEP 28
PY 2004
VL 20
IS 20
BP 8431
EP 8436
DI 10.1021/la048907o
PG 6
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 856IN
UT WOS:000224039000006
PM 15379457
ER
PT J
AU Rutherford, SW
Coons, JE
AF Rutherford, SW
Coons, JE
TI Equilibrium and kinetics of water adsorption in carbon molecular sieve:
Theory and experiment
SO LANGMUIR
LA English
DT Article
ID ACTIVATED CARBONS; VAPOR ADSORPTION; SURFACE-CHEMISTRY; AIR SEPARATION;
MASS-TRANSFER; SORPTION; EQUATION; DIOXIDE; ADSORBENTS; SIMULATION
AB Measurements of water adsorption equilibrium and kinetics in Takeda carbon molecular sieve (CMS) were undertaken in an effort to characterize fundamental mechanisms of adsorption and transport. Adsorption equilibrium revealed a type III isotherm that was characterized by cooperative multimolecular sorption theory. Water adsorption was found to be reversible and did not display hysteresis upon desorption over the conditions studied. Adsorption kinetics measurements revealed that a Fickian diffusion mechanism governed the uptake of water and that the rate of adsorption decreased with increasing relative pressure. Previous investigations have attributed the observed decreasing trend in the rate of adsorption to blocking of micropores. Here, it is proposed that the decrease is attributed to the thermodynamic correction to Fick's law which is formulated on the basis of the chemical potential as the driving force for transport. The thermodynamically corrected formulation accounted for observations of transport of water and other molecules in CMS.
C1 Los Alamos Natl Lab, Engn Sci & Applicat Div, Los Alamos, NM 87545 USA.
RP Rutherford, SW (reprint author), Los Alamos Natl Lab, Engn Sci & Applicat Div, MS C930, Los Alamos, NM 87545 USA.
EM stevenr@lanl.gov
OI Coons, Jim/0000-0003-1392-298X
NR 50
TC 26
Z9 27
U1 1
U2 20
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD SEP 28
PY 2004
VL 20
IS 20
BP 8681
EP 8687
DI 10.1021/la049330d
PG 7
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 856IN
UT WOS:000224039000041
PM 15379492
ER
PT J
AU Caculitan, NG
Scudder, PH
Rodriguez, A
Casson, JL
Wang, HL
Robinson, JM
Johal, MS
AF Caculitan, NG
Scudder, PH
Rodriguez, A
Casson, JL
Wang, HL
Robinson, JM
Johal, MS
TI In situ kinetics of layer-by-layer assembled nonlinear-optical-active
amphiphiles from dynamic surface force measurements
SO LANGMUIR
LA English
DT Article
ID SODIUM DODECYL-SULFATE; THIN-FILMS; AZOBENZENE; MULTILAYERS;
PHOTOISOMERIZATION; POLYELECTROLYTES; ORIENTATION; MOLECULES; MEMBRANES
AB We report the synthesis and layer-by-layer (LBL) deposition of a class of azo-benzene surfactants with the polycation poly(ethylenimine) (PEI). The different surfactants of the type X-azo-(CH2)(10)-SO3-, where X = -NO2, -CN, and -COCH3 in the azo-benzene moiety, have decreasing electron-withdrawing strengths. We use dynamic surface force measurements to study the in situ kinetics of adsorption of the amphiphiles onto PEI. Ex situ kinetics data obtained by adsorption-paused UV-visible spectroscopy validate the surface force results. These measurements describe the first application of dynamic force measurements to follow adsorption in LBL systems. UV-visible spectroscopy, second harmonic generation (SHG), and single-wavelength ellipsometry were also used to characterize the films. The observed blue shift upon adsorption of the amphiphiles suggests H-type aggregation within the multilayer. Two of the surfactants studied within the LBL films follow Langmuir adsorption behavior with equilibrium adsorption times under 200 s. The SHG results are consistent with the expected trends in the hyperpolarizabilities of the amphiphiles.
C1 New Coll Florida, Div Nat Sci, Sarasota, FL 34243 USA.
Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA.
Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA.
RP Johal, MS (reprint author), New Coll Florida, Div Nat Sci, Sarasota, FL 34243 USA.
EM johal@ncf.edu
NR 30
TC 7
Z9 7
U1 1
U2 7
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD SEP 28
PY 2004
VL 20
IS 20
BP 8735
EP 8739
DI 10.1021/la048732i
PG 5
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 856IN
UT WOS:000224039000049
PM 15379500
ER
PT J
AU Zhou, XC
Wu, LY
Zhou, JZ
AF Zhou, XC
Wu, LY
Zhou, JZ
TI Fabrication of DNA microarrays on nanoengineered polymeric ultrathin
film prepared by self-assembly of polyelectrolyte multilayers
SO LANGMUIR
LA English
DT Article
ID QUARTZ-CRYSTAL MICROBALANCE; OLIGONUCLEOTIDE ARRAYS; NUCLEIC-ACIDS;
IMMOBILIZATION; HYBRIDIZATION; SURFACE; ATTACHMENT; POLYMORPHISMS;
MICROCHIPS; ADSORPTION
AB Microarray-based technology is in need of flexible and cost-effective chemistry for fabrication of oligonucleotide microarrays. We have developed a novel method for the fabrication of oligonucleotide microarrays with unmodified oligonucleotide probes on nanoengineered three-dimensional thin films that are deposited on glass slides by consecutive layer-to-layer adsorption of polyelectrolytes. Unmodified oligonucleotide probes were spotted and immobilized on these multilayered polyelectrolyte thin films (PET) by electrostatic adsorption and entrapment on the porous structure of the PET film. The PET provides higher probe binding capacity and thus higher hybridization signal than that of the traditional two-dimensional aminosilane and poly-L-lysine coated slides. Immobilized probe densities of 3.4 x 10(12)/ cm(2) were observed for microarray spots on PET with unmodified 50-mer oligonucleotide probes, which is comparable to the immobilized probe densities of alkyamine-modified 50-mer probes end-tethered on an aldehyde-functionalized slide. The study of hybridization efficiency showed that 90% of immobilized probes on PET film are accessible to target DNA to form duplex format in hybridization. The DNA microarray fabricated on PET film has wider dynamic range (about 3 orders of magnitude) and lower detection limit (0.5 nM) than the conventional amino- and aldehyde-functionlized slides. Oligonucleotide microarrays fabricated on these PET-coated slides also had consistent spot morphology. In addition, discrimination of single nucleotide polymorphism of 16S rRNA genes was achieved with the PET-based oligonucleotide microarrays. The PET microarrays constructed by our self-assembly process is cost-effective, versatile, and well suited for immobilizing many types of biological active molecules so that a wide variety of microarray formats can be developed.
C1 Oak Ridge Natl Lab, Div Environm Sci, Genom Grp, Oak Ridge, TN 37831 USA.
RP Zhou, JZ (reprint author), Oak Ridge Natl Lab, Div Environm Sci, Genom Grp, Oak Ridge, TN 37831 USA.
EM zhouj@ornl.gov
NR 38
TC 36
Z9 38
U1 3
U2 6
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0743-7463
J9 LANGMUIR
JI Langmuir
PD SEP 28
PY 2004
VL 20
IS 20
BP 8877
EP 8885
DI 10.1021/la048950b
PG 9
WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science,
Multidisciplinary
SC Chemistry; Materials Science
GA 856IN
UT WOS:000224039000070
PM 15379521
ER
PT J
AU Scott, HP
Hemley, RJ
Mao, HK
Herschbach, DR
Fried, LE
Howard, WM
Bastea, S
AF Scott, HP
Hemley, RJ
Mao, HK
Herschbach, DR
Fried, LE
Howard, WM
Bastea, S
TI Generation of methane in the Earth's mantle: In situ high
pressure-temperature measurements of carbonate reduction
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Article
ID EQUATION-OF-STATE; HYDROCARBONS; GRAPHITE; FLUIDS; EQUILIBRIUM;
RESERVOIRS; MIXTURES; SYSTEM; PHASE; BASIN
AB We present in situ observations of hydrocarbon formation via carbonate reduction at upper mantle pressures and temperatures. Methane was formed from FeO, CaCO3-calcite, and water at pressures between 5 and 11 GPa and temperatures ranging from 500degreesC to 1,500degreesC. The results are shown to be consistent with multiphase thermodynamic calculations based on the statistical mechanics of soft particle mixtures. The study demonstrates the existence of abiogenic pathways for the formation of hydrocarbons in the Earth's interior and suggests that the hydrocarbon budget of the bulk Earth may be larger than conventionally assumed.
C1 Indiana Univ, Dept Phys & Astron, South Bend, IN 46634 USA.
Carnegie Inst Sci, Geophys Lab, Washington, DC 20015 USA.
Harvard Univ, Dept Chem & Chem Biol, Cambridge, MA 02138 USA.
Lawrence Livermore Natl Lab, Chem & Mat Sci Derectorate, Livermore, CA 94550 USA.
Lawrence Livermore Natl Lab, Phys & Adv Technol Directorate, Livermore, CA 94550 USA.
RP Indiana Univ, Dept Phys & Astron, South Bend, IN 46634 USA.
EM hpscott@iusb.edu
RI Fried, Laurence/L-8714-2014
OI Fried, Laurence/0000-0002-9437-7700
NR 27
TC 80
Z9 90
U1 2
U2 20
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 28
PY 2004
VL 101
IS 39
BP 14023
EP 14026
DI 10.1073/pnas.0405930101
PG 4
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 858SG
UT WOS:000224211400012
PM 15381767
ER
PT J
AU Qiu, WG
Schutzer, SE
Bruno, JF
Attie, O
Yun, X
Dunn, JJ
Fraser, CM
Casjens, SR
Luft, BJ
AF Qiu, WG
Schutzer, SE
Bruno, JF
Attie, O
Yun, X
Dunn, JJ
Fraser, CM
Casjens, SR
Luft, BJ
TI Genetic exchange and plasmid transfers in Borrelia burgdorferi sensu
stricto revealed by three-way genome comparisons and multilocus sequence
typing
SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF
AMERICA
LA English
DT Article
DE balancing selection; ospC; Lyme disease; Stevens' test
ID LYME-DISEASE SPIROCHETE; ESCHERICHIA-COLI; NUCLEOTIDE POLYMORPHISM;
BACILLUS-ANTHRACIS; SURFACE PROTEIN; UNITED-STATES; RECOMBINATION;
POPULATION; CONVERSION; BACTERIA
AB Comparative genomics of closely related bacterial isolates is a powerful method for uncovering virulence and other important genome elements. We determined draft sequences (8-fold coverage) of the genomes of strains JD1 and N40 of Borrelia burgdorferi sensu stricto, the causative agent of Lyme disease, and we compared the predicted genes from the two genomes with those from the previously sequenced B31 genome. The three genomes are closely related and are evolutionarily approximately equidistant (approximate to0.5% pairwise nucleotide differences on the main chromosome). We used a Poisson model of nucleotide substitution to screen for genes with elevated levels of nucleotide polymorphisms. The three-way genome comparison allowed distinction between polymorphisms introduced by mutations and those introduced by recombination using the method of phylogenetic partitioning. Tests for recombination suggested that patches of high-density nucleotide polymorphisms on the chromosome and plasmids arise by DNA exchange. The role of recombination as the main mechanism driving B. burgdorferi diversification was confirmed by multilocus sequence typing of 18 clinical isolates at 18 polymorphic loci. A strong linkage between the multilocus sequence genotypes and the major alleles of outer-surface protein C (ospC) suggested that balancing selection at ospC is a dominant force maintaining B. burgdorferi diversity in local populations. We conclude that B. burgdorferi undergoes genome-wide genetic exchange, including plasmid transfers, and previous reports of its clonality are artifacts from the use of geographically and ecological isolated samples. Frequent recombination implies a potential for rapid adaptive evolution and a possible polygenic basis of B. burgdorferi pathogenicity.
C1 CUNY Hunter Coll, Dept Biol Sci, New York, NY 10021 USA.
Univ Med & Dent New Jersey, New Jersey Med Sch, Dept Med, Newark, NJ 07103 USA.
SUNY Stony Brook, Hlth Sci Ctr, Dept Med, Stony Brook, NY 11794 USA.
Brookhaven Natl Lab, Dept Biol, Upton, NY 11793 USA.
Inst Genom Res, Rockville, MD 20850 USA.
Univ Utah, Sch Med, Div Mol Cell Biol & Immunol, Salt Lake City, UT 84132 USA.
RP Qiu, WG (reprint author), CUNY Hunter Coll, Dept Biol Sci, 695 Pk Ave, New York, NY 10021 USA.
EM weigang@genectr.hunter.cuny.edu
OI Luft, Benjamin/0000-0001-9008-7004; Fraser, Claire/0000-0003-1462-2428
FU NCRR NIH HHS [G12 RR003037, RR03037]; NIAID NIH HHS [AI37256, AI49003,
R01 AI049003]
NR 68
TC 85
Z9 87
U1 0
U2 3
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 28
PY 2004
VL 101
IS 39
BP 14150
EP 14155
DI 10.1073/pnas.0402745101
PG 6
WC Multidisciplinary Sciences
SC Science & Technology - Other Topics
GA 858SG
UT WOS:000224211400035
PM 15375210
ER
PT J
AU Bourdarie, S
Friedel, R
AF Bourdarie, S
Friedel, R
TI Introduction to special section on Conference on Radiation Belt and
Solar Energetic Particles
SO SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS
LA English
DT Editorial Material
DE inner magnetosphere; radiation belts; trapped particles; solar flare
C1 Off Natl Etud & Rech Aerosp, Toulouse, France.
Los Alamos Natl Lab, Los Alamos, NM USA.
RP Bourdarie, S (reprint author), Off Natl Etud & Rech Aerosp, Toulouse, France.
EM sebastien.bourdarie@onecert.fr
RI Friedel, Reiner/D-1410-2012
OI Friedel, Reiner/0000-0002-5228-0281
NR 0
TC 0
Z9 0
U1 0
U2 1
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 1542-7390
J9 SPACE WEATHER
JI Space Weather
PD SEP 28
PY 2004
VL 2
IS 9
AR S09S01
DI 10.1029/2004SW000097
PG 1
WC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology &
Atmospheric Sciences
SC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology &
Atmospheric Sciences
GA 909HO
UT WOS:000227851200003
ER
PT J
AU He, H
Weierstall, U
Spence, JCH
Howells, M
Padmore, HA
Marchesini, S
Chapman, HN
AF He, H
Weierstall, U
Spence, JCH
Howells, M
Padmore, HA
Marchesini, S
Chapman, HN
TI Use of extended and prepared reference objects in experimental Fourier
transform x-ray holography
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID RESOLUTION; RECONSTRUCTION; COMPENSATION; MICROSCOPY
AB The use of one or more gold nanoballs as reference objects for Fourier transform holography (FTH) is analyzed using experimental soft x-ray diffraction from objects consisting of separated clusters of these balls. The holograms are deconvoluted against ball reference objects to invert to images, in combination with a Wiener filter to control noise. A resolution of similar to30 nm, smaller than one ball, is obtained even if a large cluster of balls is used as the reference, giving the best resolution yet obtained by x-ray FTH. Methods of dealing with missing data due to a beamstop are discussed. Practical prepared objects which satisfy the FTH condition are suggested, and methods of forming them described. (C) American Institute of Physics.
C1 Arizona State Univ, Dept Phys & Astron, Tempe, AZ 85287 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP He, H (reprint author), Arizona State Univ, Dept Phys & Astron, Tempe, AZ 85287 USA.
EM hfhe@lbl.gov
RI Marchesini, Stefano/A-6795-2009; Chapman, Henry/G-2153-2010; Weierstall,
Uwe/B-3568-2011
OI Chapman, Henry/0000-0002-4655-1743;
NR 18
TC 20
Z9 20
U1 0
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 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD SEP 27
PY 2004
VL 85
IS 13
BP 2454
EP 2456
DI 10.1063/1.1795360
PG 3
WC Physics, Applied
SC Physics
GA 858FS
UT WOS:000224178300002
ER
PT J
AU Keidar, M
Gallimore, AD
Raitses, Y
Boyd, ID
AF Keidar, M
Gallimore, AD
Raitses, Y
Boyd, ID
TI On the potential distribution in Hall thrusters
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID PLASMA THRUSTERS
AB A model of the plasma flow in a Hall thruster channel is developed that takes into account the two-dimensional current conservation effect and relies on some experimental input parameters, such as magnetic field and electron temperature distribution. The model is an attempt to explain the experimentally found nonuniform potential distribution across the thruster channel. This effect is explained by the change of the electron mobility across a magnetic field due to the magnetic field gradient and due to the electron current along the magnetic field driven by the electron temperature gradient. (C) American Institute of Physics.
C1 Univ Michigan, Dept Aerosp Engn, Ann Arbor, MI 48109 USA.
Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
Univ Michigan, Dept Aerosp Engn, Ann Arbor, MI 48109 USA.
RP Keidar, M (reprint author), Univ Michigan, Dept Aerosp Engn, Ann Arbor, MI 48109 USA.
EM keidar@engin.umich.edu
NR 11
TC 19
Z9 19
U1 1
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 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD SEP 27
PY 2004
VL 85
IS 13
BP 2481
EP 2483
DI 10.1063/1.1797555
PG 3
WC Physics, Applied
SC Physics
GA 858FS
UT WOS:000224178300011
ER
PT J
AU Wu, AT
Tu, KN
Lloyd, JR
Tamura, N
Valek, BC
Kao, CR
AF Wu, AT
Tu, KN
Lloyd, JR
Tamura, N
Valek, BC
Kao, CR
TI Electromigration-induced microstructure evolution in tin studied by
synchrotron x-ray microdiffraction
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID IN-SITU; ALUMINUM; LINES; INTERCONNECTS; CONDUCTORS
AB Under constant current electromigration, white tin exhibited a resistance drop of up to 10%. It has a body-centered-tetragonal structure, and the resistivity along the a and b axes is 35% smaller than along the c axis. Microstructure evolution under electromigration could be responsible for the resistance drop. Synchrotron radiation white beam x-ray microdiffraction was used to study this evolution. Grain-by-grain analysis was obtained from the diffracted Laue patterns about the changes of grain orientation before and after electromigration. We observed that high-resistance grains reorient with respect to the neighboring low-resistance grains, most likely by grain growth of the latter. A different mechanism of grain growth under electromigration from the normal grain growth is proposed and discussed. (C) American Institute of Physics.
C1 Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA.
IBM Corp, Thomas J Watson Res Ctr, Yorktown Hts, NY 10598 USA.
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
Natl Cent Univ, Dept Chem & Mat Engn, Chungli 32054, Taiwan.
RP Wu, AT (reprint author), Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA.
EM tcwu@ucla.edu
RI Kao, C R/B-5072-2008
OI Kao, C R/0000-0001-6685-0639
NR 14
TC 40
Z9 40
U1 1
U2 18
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD SEP 27
PY 2004
VL 85
IS 13
BP 2490
EP 2492
DI 10.1063/1.1795353
PG 3
WC Physics, Applied
SC Physics
GA 858FS
UT WOS:000224178300014
ER
PT J
AU Lee, JS
Kang, BS
Lin, Y
Li, Y
Jia, QX
AF Lee, JS
Kang, BS
Lin, Y
Li, Y
Jia, QX
TI Anisotropic dielectric properties in epitaxial Bi3.25La0.75Ti3O12 thin
films along different crystal directions
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID FERROELECTRIC PROPERTIES; ELECTRICAL-PROPERTIES; BI4-XLAXTI3O12;
ORIENTATION; DEPENDENCE; ELECTRODES; DEPOSITION; BI4TI3O12
AB Epitaxial (001)-oriented Bi3.25La0.75Ti3O12 (BLT) thin films were grown by pulsed-laser deposition on (001) LaAlO3 single-crystal substrates. The dielectric properties of the BLT films are highly anisotropic along different crystal directions. The dielectric constants are 358 and 160 along [100] and [1(1) over bar 0], respectively. Dielectric nonlinearity is also detected along these crystal directions. On the other hand, a much smaller dielectric constant and no detectable dielectric nonlinearity in a field range of 0-200 kV/cm are observed for a film along [001] where c-axis oriented SrRuO3 is used as the bottom electrode. (C) American Institute of Physics.
C1 Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
RP Lee, JS (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
EM jslee@lanl.gov; qxjia@lanl.gov
RI Lee, Jang-Sik/A-6629-2008; Jia, Q. X./C-5194-2008; lin, yuan/B-9955-2013
OI Lee, Jang-Sik/0000-0002-1096-1783;
NR 19
TC 11
Z9 11
U1 0
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 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD SEP 27
PY 2004
VL 85
IS 13
BP 2586
EP 2588
DI 10.1063/1.1797536
PG 3
WC Physics, Applied
SC Physics
GA 858FS
UT WOS:000224178300046
ER
PT J
AU Jiang, CS
Noufi, R
Ramanathan, K
AbuShama, JA
Moutinho, HR
Al-Jassim, MM
AF Jiang, CS
Noufi, R
Ramanathan, K
AbuShama, JA
Moutinho, HR
Al-Jassim, MM
TI Does the local built-in potential on grain boundaries of Cu(In,Ga)Se-2
thin films benefit photovoltaic performance of the device?
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID SOLAR-CELLS; EFFICIENCY
AB In a previous paper [C.-S. Jiang , Appl. Phys. Lett. 84, 3477 (2004)], we reported the existence of a local built-in potential on grain boundaries (GBs) of photovoltaic Cu(In,Ga)Se-2 (CIGS) thin films. However, whether the built-in potential benefits photovoltaic properties of the device has not been proven. Using a scanning Kelvin probe microscope, we found that, with increasing Ga content in the CIGS film, the built-in potential on the GB drops sharply in a Ga range of 28%-38%. Comparing the changes in the built-in potential, the device efficiency, and the CIGS band gap, we conclude that the built-in potential on the GB plays a significant role in the device conversion efficiency of NREL's three-stage CIGS device. (C) American Institute of Physics.
C1 Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Jiang, CS (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA.
EM chun_sheng_jiang@nrel.gov
RI jiang, chun-sheng/F-7839-2012
NR 15
TC 94
Z9 94
U1 0
U2 25
PU AMER INST PHYSICS
PI MELVILLE
PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1,
MELVILLE, NY 11747-4501 USA
SN 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD SEP 27
PY 2004
VL 85
IS 13
BP 2625
EP 2627
DI 10.1063/1.1793346
PG 3
WC Physics, Applied
SC Physics
GA 858FS
UT WOS:000224178300059
ER
PT J
AU Maruyama, T
Luh, DA
Brachmann, A
Clendenin, JE
Garwin, EL
Harvey, S
Jiang, J
Kirby, RE
Prescott, CY
Prepost, R
Moy, AM
AF Maruyama, T
Luh, DA
Brachmann, A
Clendenin, JE
Garwin, EL
Harvey, S
Jiang, J
Kirby, RE
Prescott, CY
Prepost, R
Moy, AM
TI Systematic study of polarized electron emission from strained GaAs/GaAsP
superlattice photocathodes
SO APPLIED PHYSICS LETTERS
LA English
DT Article
ID SPIN POLARIZATION; GAASP; PHOTOEMISSION; INGAAS; LAYER
AB Spin-polarized electron photoemission has been studied for GaAs/GaAs1-xPx strained superlattice cathodes grown by gas-source molecular beam epitaxy. The superlattice structural parameters are systematically varied to optimize the photoemission characteristics. The heavy-hole and light-hole transitions are reproducibly observed in quantum efficiency spectra, enabling direct measurement of the band energies and the energy splitting. Electron-spin polarization as high as 86% with over 1% quantum efficiency has been observed. (C) American Institute of Physics.
C1 Stanford Linear Accelerator Ctr, Menlo Pk, CA 94025 USA.
Univ Wisconsin, Dept Phys, Madison, WI 53706 USA.
SVT Associates Inc, Eden Prairie, MN 55344 USA.
RP Maruyama, T (reprint author), Stanford Linear Accelerator Ctr, Menlo Pk, CA 94025 USA.
EM tvm@slac.stanford.edu
RI LUH, DAH-AN/B-3921-2008
NR 15
TC 45
Z9 45
U1 0
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 0003-6951
J9 APPL PHYS LETT
JI Appl. Phys. Lett.
PD SEP 27
PY 2004
VL 85
IS 13
BP 2640
EP 2642
DI 10.1063/1.1795358
PG 3
WC Physics, Applied
SC Physics
GA 858FS
UT WOS:000224178300064
ER
PT J
AU Jantunen, KC
Burns, CJ
Castro-Rodriguez, I
Da Re, RE
Golden, JT
Morris, DE
Scott, BL
Taw, FL
Kiplinger, JL
AF Jantunen, KC
Burns, CJ
Castro-Rodriguez, I
Da Re, RE
Golden, JT
Morris, DE
Scott, BL
Taw, FL
Kiplinger, JL
TI Thorium(IV) and uranium(IV) ketimide complexes prepared by nitrile
insertion into actinide-alkyl and -aryl bonds
SO ORGANOMETALLICS
LA English
DT Article
ID CRYSTAL-STRUCTURE; STRUCTURAL-CHARACTERIZATION; MOLECULAR-STRUCTURE;
X-RAY; CONVENTIONAL MICROELECTRODES; ORGANOMETALLIC COMPOUNDS;
FUNCTIONAL-GROUPS; MULTIPLE-BOND; IMIDO COMPLEX; 1ST EXAMPLE
AB Migratory insertion of benzonitrile into both An-C bonds of the bis(alkyl) and bis(aryl) complexes (C5Me5)(2)AnR(2) yields the actinide ketimido complexes (C5Me5)(2)An[-N=C(Ph)(R)](2) (where An = Th, R = Ph, CH2Ph, CH3; An = U, R = CH2Ph, CH3) and provides a versatile method for the construction of electronically and sterically diverse ketimide ligands. The Th(IV) compounds represent the first examples of thorium ketimide complexes. The uranium complexes are surprisingly unreactive, and both the uranium and thorium bis(ketimido) complexes display unusual electronic structure properties. The combined chemical and physical properties of these complexes suggest a higher An-N bond order due to significant ligand-to-metal pi-bonding in the actinide ketimido interactions and indicate that the f-electrons in mid-valent organouranium complexes might be far more involved in chemical bonding and reactivity than previously thought. We also report herein the structures of the known thorium and uranium complexes (C5Me5)(2)Th(CH2Ph)(2), (C5Me5)(2)ThMe2, (C5Me5)(2)U(CH2Ph)(2), and (C5Me5)(2)UMe2.
C1 Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA.
RP Kiplinger, JL (reprint author), Los Alamos Natl Lab, Div Chem, POB 1663, Los Alamos, NM 87545 USA.
EM kiplinger@lanl.gov
RI Morris, David/A-8577-2012; Kiplinger, Jaqueline/B-9158-2011; Scott,
Brian/D-8995-2017
OI Kiplinger, Jaqueline/0000-0003-0512-7062; Scott,
Brian/0000-0003-0468-5396
NR 84
TC 100
Z9 100
U1 1
U2 15
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0276-7333
J9 ORGANOMETALLICS
JI Organometallics
PD SEP 27
PY 2004
VL 23
IS 20
BP 4682
EP 4692
DI 10.1021/om0343824
PG 11
WC Chemistry, Inorganic & Nuclear; Chemistry, Organic
SC Chemistry
GA 855RP
UT WOS:000223991700023
ER
PT J
AU Tang, YJ
Zakharov, LN
Rheingold, AL
Kemp, RA
AF Tang, YJ
Zakharov, LN
Rheingold, AL
Kemp, RA
TI Insertion of carbon dioxide into Mg-N bonds. Structural characterization
of a previously unknown eta(2) chelation mode to magnesium in magnesium
carbamates
SO ORGANOMETALLICS
LA English
DT Article
ID NITROGEN SIGMA-BONDS; DYNAMICAL SOLUTION BEHAVIOR; METATHETICAL
EXCHANGE; MOLECULAR-STRUCTURE; COMPLEXES; FIXATION; CRYSTAL;
DERIVATIVES; REACTIVITY; ALUMINUM
AB Insertion reactions Of CO2 into magnesium amides that yield carbamates are known, and several different bonding modes of the -O2CNR2 moiety to magnesium have been previously identified. However, conspicuous by its absence is the simplest mode of chelation of the carbamate to a single Mg atom, the eta(2) chelating mode. We have now discovered that the insertion Of CO2 into Mg-2(NCy2)(4) (Cy = cyclohexyl) in THF/HMPA (HMPA = hexamethylphosphoramide) forms the unsymmetrical dinuclear compound [Mg-2(O2CNCy2)(4)-(HMPA)] (1). X-ray diffraction analysis shows that 1 contains three different bonding modes of the carbamate to the Mg atoms, including the first example of the terminal bidentate eta(2) mode.
C1 Univ New Mexico, Dept Chem, Albuquerque, NM 87131 USA.
Univ Calif San Diego, Dept Chem & Biochem, La Jolla, CA USA.
Sandia Natl Labs, Adv Mat Lab, Albuquerque, NM USA.
RP Kemp, RA (reprint author), Univ New Mexico, Dept Chem, Albuquerque, NM 87131 USA.
EM rakemp@unm.edu
NR 30
TC 31
Z9 31
U1 3
U2 8
PU AMER CHEMICAL SOC
PI WASHINGTON
PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0276-7333
J9 ORGANOMETALLICS
JI Organometallics
PD SEP 27
PY 2004
VL 23
IS 20
BP 4788
EP 4791
DI 10.1021/om049594v
PG 4
WC Chemistry, Inorganic & Nuclear; Chemistry, Organic
SC Chemistry
GA 855RP
UT WOS:000223991700035
ER
PT J
AU Tartakovsky, DM
Wohlberg, BE
AF Tartakovsky, DM
Wohlberg, BE
TI Delineation of geologic facies with statistical learning theory
SO GEOPHYSICAL RESEARCH LETTERS
LA English
DT Article
AB Insufficient site parameterization remains a major stumbling block for efficient and reliable prediction of flow and transport in a subsurface environment. The lack of sufficient parameter data is usually dealt with by treating relevant parameters as random fields, which enables one to employ various geostatistical and stochastic tools. The major conceptual difficulty with these techniques is that they rely on the ergodicity hypothesis to interchange spatial and ensemble statistics. Instead of treating deterministic material properties as random, we introduce tools from machine learning to deal with the sparsity of data. To demonstrate the relevance and advantages of this approach, we apply one of these tools, the Support Vector Machine, to delineate geologic facies from hydraulic conductivity data.
C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Tartakovsky, DM (reprint author), Los Alamos Natl Lab, Div Theoret, Group T-7,MS B284, Los Alamos, NM 87545 USA.
EM dmt@lanl.gov; brendt@t7.lanl.gov
RI Tartakovsky, Daniel/E-7694-2013; Wohlberg, Brendt/M-7764-2015
OI Wohlberg, Brendt/0000-0002-4767-1843
NR 12
TC 11
Z9 11
U1 0
U2 2
PU AMER GEOPHYSICAL UNION
PI WASHINGTON
PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA
SN 0094-8276
J9 GEOPHYS RES LETT
JI Geophys. Res. Lett.
PD SEP 25
PY 2004
VL 31
IS 18
AR L18502
DI 10.1029/2004GL020864
PG 5
WC Geosciences, Multidisciplinary
SC Geology
GA 857OD
UT WOS:000224126200004
ER
PT J
AU Kurien, S
Taylor, MA
Matsumoto, T
AF Kurien, S
Taylor, MA
Matsumoto, T
TI Isotropic third-order statistics in turbulence with helicity: the
2/15-law
SO JOURNAL OF FLUID MECHANICS
LA English
DT Article
ID ENERGY-DISSIPATION
AB The so-called 2/15-law for two-point third-order velocity statistics in isotropic turbulence with helicity is computed for the first time from a direct numerical simulation of the Navier-Stokes equations in a 512(3) periodic domain. This law is a statement of helicity conservation in the inertial range, analogous to the benchmark Kolmogorov 4/5-law for energy conservation in high-Reynolds-number turbulence. The appropriately normalized parity-breaking statistics, when measured in an arbitrary direction in the flow, disagree with the theoretical value of 2/15 predicted for isotropic turbulence. They are highly anisotropic and variable and remain so over long times. We employ a recently developed technique to average over many directions and so recover the statistically isotropic component of the flow. The angle-averaged statistics achieve the 2/15 factor to within about 7% instantaneously and about 5% on average over time. The inertial- and viscous-range behaviour of the helicity-dependent statistics and consequently the helicity flux, which appear in the 2/15-law, are shown to be more anisotropic and intermittent than the corresponding energy-dependent reflection-symmetric structure functions, and the energy flux, which appear in the 4/5-law. This suggests that the Kolmogorov assumption of local isotropy at high Reynolds numbers needs to be modified for the helicity-dependent statistics investigated here.
C1 Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
Los Alamos Natl Lab, Comp & Computat Sci Div, Los Alamos, NM 87545 USA.
Kyoto Univ, Dept Phys, Sakyo Ku, Kyoto 6068502, Japan.
RP Kurien, S (reprint author), Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
NR 23
TC 10
Z9 10
U1 0
U2 1
PU CAMBRIDGE UNIV PRESS
PI NEW YORK
PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
SN 0022-1120
J9 J FLUID MECH
JI J. Fluid Mech.
PD SEP 25
PY 2004
VL 515
BP 87
EP 97
DI 10.1017/S0022112004000424
PG 11
WC Mechanics; Physics, Fluids & Plasmas
SC Mechanics; Physics
GA 861DS
UT WOS:000224396900004
ER
PT J
AU Raab, GJ
Valiev, RZ
Lowe, TC
Zhu, YT
AF Raab, GJ
Valiev, RZ
Lowe, TC
Zhu, YT
TI Continuous processing of ultrafine grained Al by ECAP-Conform
SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES
MICROSTRUCTURE AND PROCESSING
LA English
DT Article
DE severe plastic deformation (SPD); conform; ultrafine grained structure;
aluminum
ID SEVERE PLASTIC-DEFORMATION; NANOSTRUCTURED METALS; REFINEMENT; ALLOYS;
SHEAR; STRIP
AB In this paper, we report a new severe plastic deformation (SPD) technique, which combines equal channel angular pressing (ECAP) with Conform, to process ultrafine grained (UFG) materials in a continuous manner. ECAP in its original form can only process short metal bars and is labor intensive. Conform is a technique that has been used to continuously form metals into various shapes. By combining these two techniques, we were able to produce UFG structures in an Al wire and to significantly increase its strength. (C) 2004 Elsevier B.V. All rights reserved.
C1 Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
Ufa State Aviat Tech Univ, Inst Phys Adv Mat, Ufa 450000, Russia.
RP Zhu, YT (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, MS G755, Los Alamos, NM 87545 USA.
EM yzhu@lanl.gov
RI Zhu, Yuntian/B-3021-2008; Raab, Georgy/G-7530-2013
OI Zhu, Yuntian/0000-0002-5961-7422;
NR 26
TC 204
Z9 221
U1 2
U2 23
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0921-5093
J9 MAT SCI ENG A-STRUCT
JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.
PD SEP 25
PY 2004
VL 382
IS 1-2
BP 30
EP 34
DI 10.1016/j.msea.2004.04.021
PG 5
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 859LK
UT WOS:000224264900006
ER
PT J
AU Li, S
Bourke, MAM
Beyerlein, IJ
Alexander, DJ
Clausen, B
AF Li, S
Bourke, MAM
Beyerlein, IJ
Alexander, DJ
Clausen, B
TI Finite element analysis of the plastic deformation zone and working load
in equal channel angular extrusion
SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES
MICROSTRUCTURE AND PROCESSING
LA English
DT Article
DE equal channel angular extrusion; finite element; plastic deformation
zone; severe plastic deformation
ID BILLET DEFORMATION; MATERIAL FLOW; STRAIN-RATE; BEHAVIOR; HOMOGENEITY;
METALS; ECAE
AB A comprehensive finite element (FE) study is conducted to analyze the formation of the plastic deformation zone (PDZ) and evolution of the working load with ram displacement during a single pass of equal channel angular extrusion (ECAE) with intersection angle 90degrees. This study explores systematically the coupled effects of material response, outer corner angle ( Psi = 0degrees, 45degrees, or 90degrees), and friction on ECAE deformation, which can be effectively analyzed through two key characteristics of the PDZ alone. These characteristics, the morphology and strain-rate distribution within the PDZ, are largely responsible for the heterogeneity in strain that develops in the sample at the end of a single pass. Strain hardening, psi, and friction were all found to have some effect on the PDZ, though under their combined influence, one tends to dominate over the others. Strain hardening tends to produce asymmetry in the strain-rate distribution within the PDZ, resulting in corner gaps and a more heterogeneous strain distribution than an ideal perfectly plastic material. In cases in which the material fills the die, the PDZ shape is largely governed by the die geometry, i.e. psi, independent of material response and friction. In this respect, friction does however help to reduce the free surface gaps that form between a strain hardening material and the die, but to further increase the degree of heterogeneity. The distinct stages that are present in the load versus displacement curves are defined and associated with those in sample deformation, some of which depend on psi and others on material properties. Effective strain calculations are compared with various analytical models and the one that directly accounts for the PDZ tends to perform better. To date, most of the cases studied here have not been modeled analytically; however, a stronger connection between analytical modeling and actual ECAE deformation can be made by the guidance of these FE studies on the interactive influence of processing and material variables. Published by Elsevier B.V.
C1 Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
Los Alamos Natl Lab, Ctr Neurol Sci, Los Alamos, NM 87545 USA.
RP Li, S (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, POB 1663, Los Alamos, NM 87545 USA.
EM saiyi@lanl.gov
RI Li, Saiyi/J-3968-2012; Beyerlein, Irene/A-4676-2011; Clausen,
Bjorn/B-3618-2015
OI Clausen, Bjorn/0000-0003-3906-846X
NR 28
TC 147
Z9 161
U1 0
U2 16
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0921-5093
J9 MAT SCI ENG A-STRUCT
JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.
PD SEP 25
PY 2004
VL 382
IS 1-2
BP 217
EP 236
DI 10.1016/j.msea.2004.04.067
PG 20
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Materials Science; Metallurgy &
Metallurgical Engineering
GA 859LK
UT WOS:000224264900027
ER
PT J
AU Shaw, WJ
Campbell, AA
Paine, ML
Snead, ML
AF Shaw, WJ
Campbell, AA
Paine, ML
Snead, ML
TI The COOH terminus of the amelogenin, LRAP, is oriented next to the
hydroxyapatite surface
SO JOURNAL OF BIOLOGICAL CHEMISTRY
LA English
DT Article
ID SOLID-STATE NMR; DYNAMIC LIGHT-SCATTERING; DOUBLE-RESONANCE NMR;
ENAMEL-MATRIX; RECOMBINANT AMELOGENIN; ROTATIONAL-ECHO; PEPTIDE;
PROTEINS; BIOMINERALIZATION; CONFORMATION
AB The organic matrix in forming enamel consists largely of the amelogenin protein self-assembled into nanospheres that are necessary to guide the formation of the unusually long and highly ordered hydroxyapatite (HAP) crystallites that constitute enamel. Despite its ability to direct crystal growth, the interaction of the amelogenin protein with HAP is unknown. However, the demonstration of growth restricted to the c-axis suggests a specific protein-crystal interaction, and the charged COOH terminus is often implicated in this function. To elucidate whether the COOH terminus is important in the binding and orientation of amelogenin onto HAP, we have used solid state NMR to determine the orientation of the COOH terminus of an amelogenin splice variant, LRAP (leucine-rich amelogenin protein), which contains the charged COOH terminus of the full protein, on the HAP surface. These experiments demonstrate that the methyl (13)C-labeled side chain of Ala(46) is 8.0 Angstrom from the HAP surface under hydrated conditions, for the protein with and without phosphorylation. The experimental results provide direct evidence orienting the charged COOH-terminal region of the amelogenin protein on the HAP surface, optimized to exert control on developing enamel crystals.
C1 Pacific NW Natl Lab, Richland, WA 99352 USA.
Univ So Calif, Ctr Craniofacial Mol Biol, Los Angeles, CA 90033 USA.
RP Shaw, WJ (reprint author), Pacific NW Natl Lab, MS K2-57,POB 999, Richland, WA 99352 USA.
EM wendy.shaw@pnl.gov
FU NIDCR NIH HHS [DE13045, DE13404, R01 DE015347, R01 DE015347-01A2]
NR 31
TC 96
Z9 98
U1 2
U2 12
PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
PI BETHESDA
PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA
SN 0021-9258
J9 J BIOL CHEM
JI J. Biol. Chem.
PD SEP 24
PY 2004
VL 279
IS 39
BP 40263
EP 40266
DI 10.1074/jbc.C400322200
PG 4
WC Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA 854PW
UT WOS:000223916800005
PM 15299015
ER
PT J
AU Aubert, B
Barate, R
Boutigny, D
Couderc, F
Gaillard, JM
Hicheur, A
Karyotakis, Y
Lees, JP
Tisserand, V
Zghiche, A
Palano, A
Pompili, A
Chen, JC
Qi, ND
Rong, G
Wang, P
Zhu, YS
Eigen, G
Ofte, I
Stugu, B
Abrams, GS
Borgland, AW
Breon, AB
Brown, DN
Button-Shafer, J
Cahn, RN
Charles, E
Day, CT
Gill, MS
Gritsan, AV
Groysman, Y
Jacobsen, RG
Kadel, RW
Kadyk, J
Kerth, LT
Kolomensky, YG
Kukartsev, G
LeClerc, C
Lynch, G
Merchant, AM
Mir, LM
Oddone, PJ
Orimoto, TJ
Pripstein, M
Roe, NA
Ronan, MT
Shelkov, VG
Telnov, AV
Wenzel, WA
Ford, K
Harrison, TJ
Hawkes, CM
Morgan, SE
Watson, AT
Fritsch, M
Goetzen, K
Held, T
Koch, H
Lewandowski, B
Pelizaeus, M
Steinke, M
Boyd, JT
Chevalier, N
Cottingham, WN
Kelly, MP
Latham, TE
Wilson, FF
Cuhadar-Donszelmann, T
Hearty, C
Mattison, TS
McKenna, JA
Thiessen, D
Kyberd, P
Teodorescu, L
Blinov, VE
Bukin, AD
Druzhinin, VP
Golubev, VB
Ivanchenko, VN
Kravchenko, EA
Onuchin, AP
Serednyakov, SI
Skovpen, YI
Solodov, EP
Yushkov, AN
Best, D
Bruinsma, M
Chao, M
Eschrich, I
Kirkby, D
Lankford, AJ
Mandelkern, M
Mommsen, RK
Roethel, W
Stoker, DP
Buchanan, C
Hartfiel, BL
Gary, JW
Shen, BC
Wang, K
del Re, D
Hadavand, HK
Hill, EJ
MacFarlane, DB
Paar, HP
Rahatlou, S
Sharma, V
Berryhill, JW
Campagnari, C
Dahmes, B
Levy, SL
Long, O
Lu, A
Mazur, MA
Richman, JD
Verkerke, W
Beck, TW
Eisner, AM
Heusch, CA
Lockman, WS
Schalk, T
Schmitz, RE
Schumm, BA
Seiden, A
Spradlin, P
Williams, DC
Wilson, MG
Albert, J
Chen, E
Dubois-Felsmann, GP
Dvoretskii, A
Hitlin, DG
Narsky, I
Piatenko, T
Porter, FC
Ryd, A
Samuel, A
Yang, S
Jayatilleke, S
Mancinelli, G
Meadows, BT
Sokoloff, MD
Abe, T
Blanc, F
Bloom, P
Chen, S
Clark, PJ
Ford, WT
Nauenberg, U
Olivas, A
Rankin, P
Smith, JG
Zhang, L
Chen, A
Harton, JL
Soffer, A
Toki, WH
Wilson, RJ
Zeng, QL
Altenburg, D
Brandt, T
Brose, J
Colberg, T
Dickopp, M
Feltresi, E
Hauke, A
Lacker, HM
Maly, E
Muller-Pfefferkorn, R
Nogowski, R
Otto, S
Petzold, A
Schubert, J
Schubert, KR
Schwierz, R
Spaan, B
Sundermann, JE
Bernard, D
Bonneaud, GR
Brochard, F
Grenier, P
Schrenk, S
Thiebaux, C
Vasileiadis, G
Verderi, M
Bard, DJ
Khan, A
Lavin, D
Muheim, F
Playfer, S
Andreotti, M
Azzolini, V
Bettoni, D
Bozzi, C
Calabrese, R
Cibinetto, G
Luppi, E
Negrini, M
Sarti, A
Treadwell, E
Baldini-Ferroli, R
Calcaterra, A
de Sangro, R
Finocchiaro, G
Patteri, P
Piccolo, M
Zallo, A
Buzzo, A
Capra, R
Contri, R
Crosetti, G
Lo Vetere, M
Macri, M
Monge, MR
Passaggio, S
Patrignani, C
Robutti, E
Santroni, A
Tosi, S
Bailey, S
Brandenburg, G
Morii, M
Won, E
Dubitzky, RS
Langenegger, U
Bhimji, W
Bowerman, DA
Dauncey, PD
Egede, U
Gaillard, JR
Morton, GW
Nash, JA
Taylor, GP
Grenier, GJ
Mallik, U
Cochran, J
Crawley, HB
Lamsa, J
Meyer, WT
Prell, S
Rosenberg, EI
Yi, J
Davier, M
Grosdidier, G
Hocker, A
Laplace, S
Le Diberder, F
Lepeltier, V
Lutz, AM
Petersen, TC
Plaszczynski, S
Schune, MH
Tantot, L
Wormser, G
Cheng, CH
Lange, DJ
Simani, MC
Wright, DM
Bevan, AJ
Coleman, JP
Fry, JR
Gabathuler, E
Gamet, R
Parry, RJ
Payne, DJ
Sloane, RJ
Touramanis, C
Back, JJ
Harrison, PF
Mohanty, GB
Brown, CL
Cowan, G
Flack, RL
Flaecher, HU
Green, MG
Marker, CE
McMahon, TR
Ricciardi, S
Salvatore, F
Vaitsas, G
Winter, MA
Brown, D
Davis, CL
Allison, J
Barlow, NR
Barlow, RJ
Hart, PA
Hodgkinson, MC
Lafferty, GD
Lyon, AJ
Williams, JC
Farbin, A
Hulsbergen, WD
Jawahery, A
Kovalskyi, D
Lae, CK
Lillard, V
Roberts, DA
Blaylock, G
Dallapiccola, C
Flood, KT
Hertzbach, SS
Kofler, R
Koptchev, VB
Moore, TB
Saremi, S
Staengle, H
Willocq, S
Cowan, R
Sciolla, G
Taylor, F
Yamamoto, RK
Mangeol, DJJ
Patel, PM
Robertson, SH
Lazzaro, A
Palombo, F
Bauer, JM
Cremaldi, L
Eschenburg, V
Godang, R
Kroeger, R
Reidy, J
Sanders, DA
Summers, DJ
Zhao, HW
Brunet, S
Cote, D
Taras, P
Nicholson, H
Cavallo, N
Fabozzi, F
Gatto, C
Lista, L
Monorchio, D
Paolucci, P
Piccolo, D
Sciacca, C
Baak, M
Bulten, H
Raven, G
Wilden, L
Jessop, CP
LoSecco, JM
Gabriel, TA
Allmendinger, T
Brau, B
Gan, KK
Honscheid, K
Hufnagel, D
Kagan, H
Kass, R
Pulliam, T
Rahimi, AM
Ter-Antonyan, R
Wong, QK
Brau, J
Frey, R
Igonkina, O
Potter, CT
Sinev, NB
Strom, D
Torrence, E
Colecchia, F
Dorigo, A
Galeazzi, F
Margoni, M
Morandin, M
Posocco, M
Rotondo, M
Simonetto, F
Stroili, R
Tiozzo, G
Voci, C
Benayoun, M
Briand, H
Chauveau, J
David, P
de la Vaissiere, C
Del Buono, L
Hamon, O
John, MJJ
Leruste, P
Ocariz, J
Pivk, M
Roos, L
T'Jampens, S
Therin, G
Manfredi, PF
Re, V
Behera, PK
Gladney, L
Guo, QH
Panetta, J
Anulli, F
Biasini, M
Peruzzi, IM
Pioppi, M
Angelini, C
Batignani, G
Bettarini, S
Bondioli, M
Bucci, F
Calderini, G
Carpinelli, M
Del Gamba, V
Forti, F
Giorgi, MA
Lusiani, A
Marchiori, G
Martinez-Vidal, F
Morganti, M
Neri, N
Paoloni, E
Rama, M
Rizzo, G
Sandrelli, F
Walsh, J
Haire, M
Judd, D
Paick, K
Wagoner, DE
Danielson, N
Elmer, P
Lu, C
Miftakov, V
Olsen, J
Smith, AJS
Bellini, F
Cavoto, G
Faccini, R
Ferrarotto, F
Ferroni, F
Gaspero, M
Li Gioi, L
Mazzoni, MA
Morganti, S
Pierini, M
Piredda, G
Tehrani, FS
Voena, C
Christ, S
Wagner, G
Waldi, R
Adye, T
De Groot, N
Franek, B
Geddes, NI
Gopal, GP
Olaiya, EO
Aleksan, R
Emery, S
Gaidot, A
Ganzhur, SF
Giraud, PF
de Monchenault, GH
Kozanecki, W
Langer, M
Legendre, M
London, GW
Mayer, B
Schott, G
Vasseur, G
Yeche, C
Zito, M
Purohit, MV
Weidemann, AW
Yumiceva, FX
Aston, D
Bartoldus, R
Berger, N
Boyarski, AM
Buchmueller, OL
Convery, MR
Cristinziani, M
De Nardo, G
Dong, D
Dorfan, J
Dujmic, D
Dunwoodie, W
Elsen, EE
Fan, S
Field, RC
Glanzman, T
Gowdy, SJ
Hadig, T
Halyo, V
Hryn'ova, T
Innes, WR
Kelsey, MH
Kim, P
Kocian, ML
Leith, DWGS
Libby, J
Luitz, S
Luth, V
Lynch, HL
Marsiske, H
Messner, R
Muller, DR
O'Grady, CP
Ozcan, VE
Perazzo, A
Perl, M
Petrak, S
Ratcliff, BN
Roodman, A
Salnikov, AA
Schindler, RH
Schwiening, J
Simi, G
Snyder, A
Soha, A
Stelzer, J
Su, D
Sullivan, MK
Va'vra, J
Wagner, SR
Weaver, M
Weinstein, AJR
Wisniewski, WJ
Wittgen, M
Wright, DH
Yarritu, AK
Young, CC
Burchat, PR
Edwards, AJ
Meyer, TI
Petersen, BA
Roat, C
Ahmed, S
Alam, MS
Ernst, JA
Saeed, MA
Saleem, M
Wappler, FR
Bugg, W
Krishnamurthy, M
Spanier, SM
Eckmann, R
Kim, H
Ritchie, JL
Satpathy, A
Schwitters, RF
Izen, JM
Kitayama, I
Lou, XC
Ye, S
Bianchi, F
Bona, M
Gallo, F
Gamba, D
Borean, C
Bosisio, L
Cartaro, C
Cossutti, F
Della Ricca, G
Dittongo, S
Grancagnolo, S
Lanceri, L
Poropat, P
Vitale, L
Vuagnin, G
Panvini, RS
Banerjee, S
Brown, CM
Fortin, D
Jackson, PD
Kowalewski, R
Roney, JM
Band, HR
Dasu, S
Datta, M
Eichenbaum, AM
Hollar, JJ
Johnson, JR
Kutter, PE
Li, H
Liu, R
Di Lodovico, F
Mihalyi, A
Mohapatra, AK
Pan, Y
Prepost, R
Sekula, SJ
Tan, P
von Wimmersperg-Toeller, JH
Wu, J
Wu, SL
Yu, Z
Neal, H
AF Aubert, B
Barate, R
Boutigny, D
Couderc, F
Gaillard, JM
Hicheur, A
Karyotakis, Y
Lees, JP
Tisserand, V
Zghiche, A
Palano, A
Pompili, A
Chen, JC
Qi, ND
Rong, G
Wang, P
Zhu, YS
Eigen, G
Ofte, I
Stugu, B
Abrams, GS
Borgland, AW
Breon, AB
Brown, DN
Button-Shafer, J
Cahn, RN
Charles, E
Day, CT
Gill, MS
Gritsan, AV
Groysman, Y
Jacobsen, RG
Kadel, RW
Kadyk, J
Kerth, LT
Kolomensky, YG
Kukartsev, G
LeClerc, C
Lynch, G
Merchant, AM
Mir, LM
Oddone, PJ
Orimoto, TJ
Pripstein, M
Roe, NA
Ronan, MT
Shelkov, VG
Telnov, AV
Wenzel, WA
Ford, K
Harrison, TJ
Hawkes, CM
Morgan, SE
Watson, AT
Fritsch, M
Goetzen, K
Held, T
Koch, H
Lewandowski, B
Pelizaeus, M
Steinke, M
Boyd, JT
Chevalier, N
Cottingham, WN
Kelly, MP
Latham, TE
Wilson, FF
Cuhadar-Donszelmann, T
Hearty, C
Mattison, TS
McKenna, JA
Thiessen, D
Kyberd, P
Teodorescu, L
Blinov, VE
Bukin, AD
Druzhinin, VP
Golubev, VB
Ivanchenko, VN
Kravchenko, EA
Onuchin, AP
Serednyakov, SI
Skovpen, YI
Solodov, EP
Yushkov, AN
Best, D
Bruinsma, M
Chao, M
Eschrich, I
Kirkby, D
Lankford, AJ
Mandelkern, M
Mommsen, RK
Roethel, W
Stoker, DP
Buchanan, C
Hartfiel, BL
Gary, JW
Shen, BC
Wang, K
del Re, D
Hadavand, HK
Hill, EJ
MacFarlane, DB
Paar, HP
Rahatlou, S
Sharma, V
Berryhill, JW
Campagnari, C
Dahmes, B
Levy, SL
Long, O
Lu, A
Mazur, MA
Richman, JD
Verkerke, W
Beck, TW
Eisner, AM
Heusch, CA
Lockman, WS
Schalk, T
Schmitz, RE
Schumm, BA
Seiden, A
Spradlin, P
Williams, DC
Wilson, MG
Albert, J
Chen, E
Dubois-Felsmann, GP
Dvoretskii, A
Hitlin, DG
Narsky, I
Piatenko, T
Porter, FC
Ryd, A
Samuel, A
Yang, S
Jayatilleke, S
Mancinelli, G
Meadows, BT
Sokoloff, MD
Abe, T
Blanc, F
Bloom, P
Chen, S
Clark, PJ
Ford, WT
Nauenberg, U
Olivas, A
Rankin, P
Smith, JG
Zhang, L
Chen, A
Harton, JL
Soffer, A
Toki, WH
Wilson, RJ
Zeng, QL
Altenburg, D
Brandt, T
Brose, J
Colberg, T
Dickopp, M
Feltresi, E
Hauke, A
Lacker, HM
Maly, E
Muller-Pfefferkorn, R
Nogowski, R
Otto, S
Petzold, A
Schubert, J
Schubert, KR
Schwierz, R
Spaan, B
Sundermann, JE
Bernard, D
Bonneaud, GR
Brochard, F
Grenier, P
Schrenk, S
Thiebaux, C
Vasileiadis, G
Verderi, M
Bard, DJ
Khan, A
Lavin, D
Muheim, F
Playfer, S
Andreotti, M
Azzolini, V
Bettoni, D
Bozzi, C
Calabrese, R
Cibinetto, G
Luppi, E
Negrini, M
Sarti, A
Treadwell, E
Baldini-Ferroli, R
Calcaterra, A
de Sangro, R
Finocchiaro, G
Patteri, P
Piccolo, M
Zallo, A
Buzzo, A
Capra, R
Contri, R
Crosetti, G
Lo Vetere, M
Macri, M
Monge, MR
Passaggio, S
Patrignani, C
Robutti, E
Santroni, A
Tosi, S
Bailey, S
Brandenburg, G
Morii, M
Won, E
Dubitzky, RS
Langenegger, U
Bhimji, W
Bowerman, DA
Dauncey, PD
Egede, U
Gaillard, JR
Morton, GW
Nash, JA
Taylor, GP
Grenier, GJ
Mallik, U
Cochran, J
Crawley, HB
Lamsa, J
Meyer, WT
Prell, S
Rosenberg, EI
Yi, J
Davier, M
Grosdidier, G
Hocker, A
Laplace, S
Le Diberder, F
Lepeltier, V
Lutz, AM
Petersen, TC
Plaszczynski, S
Schune, MH
Tantot, L
Wormser, G
Cheng, CH
Lange, DJ
Simani, MC
Wright, DM
Bevan, AJ
Coleman, JP
Fry, JR
Gabathuler, E
Gamet, R
Parry, RJ
Payne, DJ
Sloane, RJ
Touramanis, C
Back, JJ
Harrison, PF
Mohanty, GB
Brown, CL
Cowan, G
Flack, RL
Flaecher, HU
Green, MG
Marker, CE
McMahon, TR
Ricciardi, S
Salvatore, F
Vaitsas, G
Winter, MA
Brown, D
Davis, CL
Allison, J
Barlow, NR
Barlow, RJ
Hart, PA
Hodgkinson, MC
Lafferty, GD
Lyon, AJ
Williams, JC
Farbin, A
Hulsbergen, WD
Jawahery, A
Kovalskyi, D
Lae, CK
Lillard, V
Roberts, DA
Blaylock, G
Dallapiccola, C
Flood, KT
Hertzbach, SS
Kofler, R
Koptchev, VB
Moore, TB
Saremi, S
Staengle, H
Willocq, S
Cowan, R
Sciolla, G
Taylor, F
Yamamoto, RK
Mangeol, DJJ
Patel, PM
Robertson, SH
Lazzaro, A
Palombo, F
Bauer, JM
Cremaldi, L
Eschenburg, V
Godang, R
Kroeger, R
Reidy, J
Sanders, DA
Summers, DJ
Zhao, HW
Brunet, S
Cote, D
Taras, P
Nicholson, H
Cavallo, N
Fabozzi, F
Gatto, C
Lista, L
Monorchio, D
Paolucci, P
Piccolo, D
Sciacca, C
Baak, M
Bulten, H
Raven, G
Wilden, L
Jessop, CP
LoSecco, JM
Gabriel, TA
Allmendinger, T
Brau, B
Gan, KK
Honscheid, K
Hufnagel, D
Kagan, H
Kass, R
Pulliam, T
Rahimi, AM
Ter-Antonyan, R
Wong, QK
Brau, J
Frey, R
Igonkina, O
Potter, CT
Sinev, NB
Strom, D
Torrence, E
Colecchia, F
Dorigo, A
Galeazzi, F
Margoni, M
Morandin, M
Posocco, M
Rotondo, M
Simonetto, F
Stroili, R
Tiozzo, G
Voci, C
Benayoun, M
Briand, H
Chauveau, J
David, P
de la Vaissiere, C
Del Buono, L
Hamon, O
John, MJJ
Leruste, P
Ocariz, J
Pivk, M
Roos, L
T'Jampens, S
Therin, G
Manfredi, PF
Re, V
Behera, PK
Gladney, L
Guo, QH
Panetta, J
Anulli, F
Biasini, M
Peruzzi, IM
Pioppi, M
Angelini, C
Batignani, G
Bettarini, S
Bondioli, M
Bucci, F
Calderini, G
Carpinelli, M
Del Gamba, V
Forti, F
Giorgi, MA
Lusiani, A
Marchiori, G
Martinez-Vidal, F
Morganti, M
Neri, N
Paoloni, E
Rama, M
Rizzo, G
Sandrelli, F
Walsh, J
Haire, M
Judd, D
Paick, K
Wagoner, DE
Danielson, N
Elmer, P
Lu, C
Miftakov, V
Olsen, J
Smith, AJS
Bellini, F
Cavoto, G
Faccini, R
Ferrarotto, F
Ferroni, F
Gaspero, M
Li Gioi, L
Mazzoni, MA
Morganti, S
Pierini, M
Piredda, G
Tehrani, FS
Voena, C
Christ, S
Wagner, G
Waldi, R
Adye, T
De Groot, N
Franek, B
Geddes, NI
Gopal, GP
Olaiya, EO
Aleksan, R
Emery, S
Gaidot, A
Ganzhur, SF
Giraud, PF
de Monchenault, GH
Kozanecki, W
Langer, M
Legendre, M
London, GW
Mayer, B
Schott, G
Vasseur, G
Yeche, C
Zito, M
Purohit, MV
Weidemann, AW
Yumiceva, FX
Aston, D
Bartoldus, R
Berger, N
Boyarski, AM
Buchmueller, OL
Convery, MR
Cristinziani, M
De Nardo, G
Dong, D
Dorfan, J
Dujmic, D
Dunwoodie, W
Elsen, EE
Fan, S
Field, RC
Glanzman, T
Gowdy, SJ
Hadig, T
Halyo, V
Hryn'ova, T
Innes, WR
Kelsey, MH
Kim, P
Kocian, ML
Leith, DWGS
Libby, J
Luitz, S
Luth, V
Lynch, HL
Marsiske, H
Messner, R
Muller, DR
O'Grady, CP
Ozcan, VE
Perazzo, A
Perl, M
Petrak, S
Ratcliff, BN
Roodman, A
Salnikov, AA
Schindler, RH
Schwiening, J
Simi, G
Snyder, A
Soha, A
Stelzer, J
Su, D
Sullivan, MK
Va'vra, J
Wagner, SR
Weaver, M
Weinstein, AJR
Wisniewski, WJ
Wittgen, M
Wright, DH
Yarritu, AK
Young, CC
Burchat, PR
Edwards, AJ
Meyer, TI
Petersen, BA
Roat, C
Ahmed, S
Alam, MS
Ernst, JA
Saeed, MA
Saleem, M
Wappler, FR
Bugg, W
Krishnamurthy, M
Spanier, SM
Eckmann, R
Kim, H
Ritchie, JL
Satpathy, A
Schwitters, RF
Izen, JM
Kitayama, I
Lou, XC
Ye, S
Bianchi, F
Bona, M
Gallo, F
Gamba, D
Borean, C
Bosisio, L
Cartaro, C
Cossutti, F
Della Ricca, G
Dittongo, S
Grancagnolo, S
Lanceri, L
Poropat, P
Vitale, L
Vuagnin, G
Panvini, RS
Banerjee, S
Brown, CM
Fortin, D
Jackson, PD
Kowalewski, R
Roney, JM
Band, HR
Dasu, S
Datta, M
Eichenbaum, AM
Hollar, JJ
Johnson, JR
Kutter, PE
Li, H
Liu, R
Di Lodovico, F
Mihalyi, A
Mohapatra, AK
Pan, Y
Prepost, R
Sekula, SJ
Tan, P
von Wimmersperg-Toeller, JH
Wu, J
Wu, SL
Yu, Z
Neal, H
CA BaBar Collaboration
TI Search for B-+/-->[K--/+pi(+/-)](D)K-+/- and upper limit on the b -> u
amplitude in B-+/--> DK +/-
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID GAMMA
AB We search for B+/--->[K(-/+)pi(+/-)](D)K+/- decays, where [K(-/+)pi(+/-)](D) indicates that the K(-/+)pi(+/-) pair originates from the decay of a D-0 or (D) over bar (0). Results are based on 120x10(6) Y(4S)-->BB decays collected with the BABAR detector at SLAC. We set an upper limit on the ratio R-Kpi=[Gamma(B+-->[K(-)pi(+)](D)K+)+Gamma(B--->[K(+)pi(-)](D)K-)][Gamma(B+-->[K(+)pi(-)](D)K+)+Gamma(B--->[K(-)pi(+)](D)K-)]<0.026 (90% C.L.). This constrains the amplitude ratio r(B)equivalent toparallel toA(B--->(DK-)-K-0)/A(B--->(DK-)-K-0)parallel to<0.22 (90% C.L.), consistent with expectations. The small value of r(B) favored by our analysis suggests that the determination of the Cabibbo-Kobayashi-Maskawa phase gamma from B-->DK will be difficult.
C1 Phys Particules Lab, F-74941 Annecy Le Vieux, France.
Univ Basilicata, I-85100 Potenza, Italy.
Univ Valencia, CSIC, Inst Fis Corpuscular, IFIC, Valencia, Spain.
Univ Bari, Dipartmento Fis, I-70126 Bari, Italy.
Ist Nazl Fis Nucl, I-70126 Bari, Italy.
Inst High Energy Phys, Beijing 100039, Peoples R China.
Univ Bergen, Inst Phys, N-5007 Bergen, Norway.
Univ Calif Berkeley, Berkeley, CA 94720 USA.
Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
Univ Birmingham, Birmingham B15 2TT, W Midlands, England.
Ruhr Univ Bochum, Inst Expt Phys 1, D-44780 Bochum, Germany.
Univ Bristol, Bristol BS8 1TL, Avon, England.
Univ British Columbia, Vancouver, BC V6T 1Z1, Canada.
Brunel Univ, Uxbridge UB8 3PH, Middx, England.
Budker Inst Nucl Phys, Novosibirsk 630090, Russia.
Univ Calif Irvine, Irvine, CA 92697 USA.
Univ Calif Los Angeles, Los Angeles, CA 90024 USA.
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CALTECH, Pasadena, CA 91125 USA.
Univ Cincinnati, Cincinnati, OH 45221 USA.
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Colorado State Univ, Ft Collins, CO 80523 USA.
Tech Univ Dresden, Inst Kern & Teilchenphys, D-01062 Dresden, Germany.
Ecole Polytech, LLR, F-91128 Palaiseau, France.
Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland.
Univ Ferrara, Dipartmento Fis, I-44100 Ferrara, Italy.
Ist Nazl Fis Nucl, I-44100 Ferrara, Italy.
Florida A&M Univ, Tallahassee, FL 32307 USA.
Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy.
Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy.
Ist Nazl Fis Nucl, I-16146 Genoa, Italy.
Harvard Univ, Cambridge, MA 02138 USA.
Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany.
Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England.
Univ Iowa, Iowa City, IA 52242 USA.
Iowa State Univ, Ames, IA 50011 USA.
Lab Accelerateur Lineaire, F-91898 Orsay, France.
Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
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Univ London Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England.
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McGill Univ, Montreal, PQ H3A 2T8, Canada.
Univ Milan, Dipartimento Fis, I-20133 Milan, Italy.
Ist Nazl Fis Nucl, I-20133 Milan, Italy.
Univ Mississippi, University, MS 38677 USA.
Univ Montreal, Lab Rene JA Levesque, Montreal, PQ H3C 3J7, Canada.
Mt Holyoke Coll, S Hadley, MA 01075 USA.
Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy.
Ist Nazl Fis Nucl, I-80126 Naples, Italy.
NIKHEF, Natl Inst Nucl Phys & High Energy Phys, NL-1009 DB Amsterdam, Netherlands.
Univ Notre Dame, Notre Dame, IN 46556 USA.
Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
Ohio State Univ, Columbus, OH 43210 USA.
Univ Oregon, Eugene, OR 97403 USA.
Univ Padua, Dipartimento Fis, I-35131 Padua, Italy.
Ist Nazl Fis Nucl, I-35131 Padua, Italy.
Univ Paris 06, Lab Phys Nucl HE, F-75252 Paris, France.
Univ Paris 07, Lab Phys Nucl HE, F-75252 Paris, France.
Univ Pavia, Dipartimento Elettron, I-27100 Pavia, Italy.
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Univ Penn, Philadelphia, PA 19104 USA.
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Ist Nazl Fis Nucl, I-06100 Perugia, Italy.
Univ Pisa, Dipartimento Fis, Scuola Normale Super Pisa, I-56127 Pisa, Italy.
Ist Nazl Fis Nucl, I-56127 Pisa, Italy.
Prairie View A&M Univ, Prairie View, TX 77406 USA.
Princeton Univ, Princeton, NJ 08544 USA.
Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy.
Ist Nazl Fis Nucl, I-00185 Rome, Italy.
Univ Rostock, D-18051 Rostock, Germany.
Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
CEA Saclay, DSM Dapnia, F-91191 Gif Sur Yvette, France.
Univ S Carolina, Columbia, SC 29208 USA.
Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA.
Stanford Univ, Stanford, CA 94305 USA.
SUNY Albany, Albany, NY 12222 USA.
Univ Tennessee, Knoxville, TN 37996 USA.
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Ist Nazl Fis Nucl, I-10125 Turin, Italy.
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Ist Nazl Fis Nucl, I-34127 Trieste, Italy.
Vanderbilt Univ, Nashville, TN 37235 USA.
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Univ Wisconsin, Madison, WI 53706 USA.
Yale Univ, New Haven, CT 06511 USA.
RP Phys Particules Lab, F-74941 Annecy Le Vieux, France.
RI de Groot, Nicolo/A-2675-2009; Lista, Luca/C-5719-2008; Bellini,
Fabio/D-1055-2009; crosetti, nanni/H-3040-2011; Neri,
Nicola/G-3991-2012; de Sangro, Riccardo/J-2901-2012; M,
Saleem/B-9137-2013; Sarti, Alessio/I-2833-2012; Cavallo,
Nicola/F-8913-2012; Saeed, Mohammad Alam/J-7455-2012; Forti,
Francesco/H-3035-2011; Rotondo, Marcello/I-6043-2012; Patrignani,
Claudia/C-5223-2009; Della Ricca, Giuseppe/B-6826-2013; Di Lodovico,
Francesca/L-9109-2016; Calcaterra, Alessandro/P-5260-2015; Frey,
Raymond/E-2830-2016; Negrini, Matteo/C-8906-2014; Monge, Maria
Roberta/G-9127-2012; Luppi, Eleonora/A-4902-2015; Kravchenko,
Evgeniy/F-5457-2015; Calabrese, Roberto/G-4405-2015; Mir,
Lluisa-Maria/G-7212-2015; Martinez Vidal, F*/L-7563-2014; Kolomensky,
Yury/I-3510-2015; Lo Vetere, Maurizio/J-5049-2012; Grancagnolo,
Sergio/J-3957-2015; Lusiani, Alberto/N-2976-2015; Morandin,
Mauro/A-3308-2016; Lusiani, Alberto/A-3329-2016
OI Bellini, Fabio/0000-0002-2936-660X; Neri, Nicola/0000-0002-6106-3756; de
Sangro, Riccardo/0000-0002-3808-5455; Sarti,
Alessio/0000-0001-5419-7951; Saeed, Mohammad Alam/0000-0002-3529-9255;
Forti, Francesco/0000-0001-6535-7965; Rotondo,
Marcello/0000-0001-5704-6163; Patrignani, Claudia/0000-0002-5882-1747;
Della Ricca, Giuseppe/0000-0003-2831-6982; Di Lodovico,
Francesca/0000-0003-3952-2175; Calcaterra,
Alessandro/0000-0003-2670-4826; Frey, Raymond/0000-0003-0341-2636;
Negrini, Matteo/0000-0003-0101-6963; Monge, Maria
Roberta/0000-0003-1633-3195; Luppi, Eleonora/0000-0002-1072-5633;
Calabrese, Roberto/0000-0002-1354-5400; Mir,
Lluisa-Maria/0000-0002-4276-715X; Martinez Vidal,
F*/0000-0001-6841-6035; Kolomensky, Yury/0000-0001-8496-9975; Lo Vetere,
Maurizio/0000-0002-6520-4480; Grancagnolo, Sergio/0000-0001-8490-8304;
Lusiani, Alberto/0000-0002-6876-3288; Morandin,
Mauro/0000-0003-4708-4240; Lusiani, Alberto/0000-0002-6876-3288
NR 19
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 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD SEP 24
PY 2004
VL 93
IS 13
AR 131804
DI 10.1103/PhysRevLett.93.131804
PG 7
WC Physics, Multidisciplinary
SC Physics
GA 857PS
UT WOS:000224131400024
ER
PT J
AU Aubert, B
Barate, R
Boutigny, D
Couderc, F
Gaillard, JM
Hicheur, A
Karyotakis, Y
Lees, JP
Tisserand, V
Zghiche, A
Palano, A
Pompili, A
Chen, JC
Qi, ND
Rong, G
Wang, P
Zhu, YS
Eigen, G
Ofte, I
Stugu, B
Abrams, GS
Borgland, AW
Breon, AB
Brown, DN
Button-Shafer, J
Cahn, RN
Charles, E
Day, CT
Gill, MS
Gritsan, AV
Groysman, Y
Jacobsen, RG
Kadel, RW
Kadyk, J
Kerth, LT
Kolomensky, YG
Kukartsev, G
LeClerc, C
Lynch, G
Merchant, AM
Mir, LM
Oddone, PJ
Orimoto, TJ
Pripstein, M
Roe, NA
Ronan, MT
Shelkov, VG
Telnov, AV
Wenzel, WA
Ford, K
Harrison, TJ
Hawkes, CM
Morgan, SE
Watson, AT
Fritsch, M
Goetzen, K
Held, T
Koch, H
Lewandowski, B
Pelizaeus, M
Steinke, M
Boyd, JT
Chevalier, N
Cottingham, WN
Kelly, MP
Latham, TE
Wilson, FF
Cuhadar-Donszelmann, T
Hearty, C
Mattison, TS
McKenna, JA
Thiessen, D
Kyberd, P
Teodorescu, L
Blinov, VE
Bukin, AD
Druzhinin, VP
Golubev, VB
Ivanchenko, VN
Kravchenko, EA
Onuchin, AP
Serednyakov, SI
Skovpen, YI
Solodov, EP
Yushkov, AN
Best, D
Bruinsma, M
Chao, M
Eschrich, I
Kirkby, D
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Mancinelli, G
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Zeng, QL
Altenburg, D
Brandt, T
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Colberg, T
Dickopp, M
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Hauke, A
Lacker, HM
Maly, E
Muller-Pfefferkorn, R
Nogowski, R
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Petzold, A
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Schwierz, R
Spaan, B
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Bernard, D
Bonneaud, GR
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Thiebaux, C
Vasileiadis, G
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Bard, DJ
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Andreotti, M
Azzolini, V
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Calabrese, R
Cibinetto, G
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Sarti, A
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Baldini-Ferroli, R
Calcaterra, A
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Yarritu, AK
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Burchat, PR
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Wappler, FR
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Johnson, JR
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Li, H
Liu, R
Di Lodovico, F
Mihalyi, A
Mohapatra, AK
Pan, Y
Prepost, R
Sekula, SJ
Tan, P
von Wimmersperg-Toeller, JH
Wu, J
Wu, SL
Yu, Z
Neal, H
AF Aubert, B
Barate, R
Boutigny, D
Couderc, F
Gaillard, JM
Hicheur, A
Karyotakis, Y
Lees, JP
Tisserand, V
Zghiche, A
Palano, A
Pompili, A
Chen, JC
Qi, ND
Rong, G
Wang, P
Zhu, YS
Eigen, G
Ofte, I
Stugu, B
Abrams, GS
Borgland, AW
Breon, AB
Brown, DN
Button-Shafer, J
Cahn, RN
Charles, E
Day, CT
Gill, MS
Gritsan, AV
Groysman, Y
Jacobsen, RG
Kadel, RW
Kadyk, J
Kerth, LT
Kolomensky, YG
Kukartsev, G
LeClerc, C
Lynch, G
Merchant, AM
Mir, LM
Oddone, PJ
Orimoto, TJ
Pripstein, M
Roe, NA
Ronan, MT
Shelkov, VG
Telnov, AV
Wenzel, WA
Ford, K
Harrison, TJ
Hawkes, CM
Morgan, SE
Watson, AT
Fritsch, M
Goetzen, K
Held, T
Koch, H
Lewandowski, B
Pelizaeus, M
Steinke, M
Boyd, JT
Chevalier, N
Cottingham, WN
Kelly, MP
Latham, TE
Wilson, FF
Cuhadar-Donszelmann, T
Hearty, C
Mattison, TS
McKenna, JA
Thiessen, D
Kyberd, P
Teodorescu, L
Blinov, VE
Bukin, AD
Druzhinin, VP
Golubev, VB
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Schumm, BA
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Dubois-Felsmann, GP
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Hitlin, DG
Narsky, I
Piatenko, T
Porter, FC
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Samuel, A
Yang, S
Jayatilleke, S
Mancinelli, G
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Bloom, P
Chen, S
Clark, PJ
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Schrenk, S
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Negrini, M
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Sarti, A
Treadwell, E
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Meyer, TI
Petersen, BA
Roat, C
Ahmed, S
Alam, MS
Ernst, JA
Saeed, MA
Saleem, M
Wappler, FR
Bugg, W
Krishnamurthy, M
Spanier, SM
Eckmann, R
Kim, H
Ritchie, JL
Satpathy, A
Schwitters, RF
Izen, JM
Kitayama, I
Lou, XC
Ye, S
Bianchi, F
Bona, M
Gallo, F
Gamba, D
Borean, C
Bosisio, L
Cartaro, C
Cossutti, F
Della Ricca, G
Dittongo, S
Grancagnolo, S
Lanceri, L
Poropat, P
Vitale, L
Vuagnin, G
Panvini, RS
Banerjee, S
Brown, CM
Fortin, D
Jackson, PD
Kowalewski, R
Roney, JM
Band, HR
Dasu, S
Datta, M
Eichenbaum, AM
Hollar, JJ
Johnson, JR
Kutter, PE
Li, H
Liu, R
Di Lodovico, F
Mihalyi, A
Mohapatra, AK
Pan, Y
Prepost, R
Sekula, SJ
Tan, P
von Wimmersperg-Toeller, JH
Wu, J
Wu, SL
Yu, Z
Neal, H
CA BaBar Collaboration
TI Measurements of CP-violating asymmetries in B-0 -> K-s(0)pi(0) decays
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID B DECAYS; MODEL
AB We present a measurement of the time-dependent CP-violating (CPV) asymmetries in B-0-->K(S)(0)pi(0) decays based on 124x10(6) Y(4S)-->B (B) over bar decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. In a sample containing 122+/-16 signal decays, we obtain the magnitudes of the direct CPV asymmetry C(KS)(0)pi(0)=0.40(-0.28)(+0.27)+/-0.09 and of the CPV asymmetry in the interference between mixing and decay S(KS)(0)pi(0)=0.48(-0.47)(+0.38)+/-0.06 where the first error is statistical and the second systematic.
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Univ Basilicata, I-85100 Potenza, Italy.
Univ Valencia, CSIC, Inst Fis Corpuscular, IFIC, Valencia, Spain.
Univ Bari, Dipartmento Fis, I-70126 Bari, Italy.
Ist Nazl Fis Nucl, I-70126 Bari, Italy.
Inst High Energy Phys, Beijing 100039, Peoples R China.
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Ruhr Univ Bochum, Inst Expt Phys 1, D-44780 Bochum, Germany.
Univ Bristol, Bristol BS8 1TL, Avon, England.
Univ British Columbia, Vancouver, BC V6T 1Z1, Canada.
Brunel Univ, Uxbridge UB8 3PH, Middx, England.
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Princeton Univ, Princeton, NJ 08544 USA.
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RP Aubert, B (reprint author), Lab Phys Particules, F-74941 Annecy Le Vieux, France.
RI Negrini, Matteo/C-8906-2014; Lista, Luca/C-5719-2008; Bellini,
Fabio/D-1055-2009; crosetti, nanni/H-3040-2011; Neri,
Nicola/G-3991-2012; Forti, Francesco/H-3035-2011; Rotondo,
Marcello/I-6043-2012; Patrignani, Claudia/C-5223-2009; de Sangro,
Riccardo/J-2901-2012; M, Saleem/B-9137-2013; Sarti, Alessio/I-2833-2012;
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Maria Roberta/G-9127-2012; Luppi, Eleonora/A-4902-2015; Kravchenko,
Evgeniy/F-5457-2015; Calabrese, Roberto/G-4405-2015; Mir,
Lluisa-Maria/G-7212-2015; Martinez Vidal, F*/L-7563-2014; Kolomensky,
Yury/I-3510-2015; Lo Vetere, Maurizio/J-5049-2012; Grancagnolo,
Sergio/J-3957-2015; Lusiani, Alberto/N-2976-2015; Lusiani,
Alberto/A-3329-2016; Morandin, Mauro/A-3308-2016; Della Ricca,
Giuseppe/B-6826-2013; Di Lodovico, Francesca/L-9109-2016; Calcaterra,
Alessandro/P-5260-2015; Frey, Raymond/E-2830-2016
OI Negrini, Matteo/0000-0003-0101-6963; Bellini, Fabio/0000-0002-2936-660X;
Neri, Nicola/0000-0002-6106-3756; Forti, Francesco/0000-0001-6535-7965;
Rotondo, Marcello/0000-0001-5704-6163; Patrignani,
Claudia/0000-0002-5882-1747; de Sangro, Riccardo/0000-0002-3808-5455;
Sarti, Alessio/0000-0001-5419-7951; Saeed, Mohammad
Alam/0000-0002-3529-9255; Monge, Maria Roberta/0000-0003-1633-3195;
Luppi, Eleonora/0000-0002-1072-5633; Calabrese,
Roberto/0000-0002-1354-5400; Mir, Lluisa-Maria/0000-0002-4276-715X;
Martinez Vidal, F*/0000-0001-6841-6035; Kolomensky,
Yury/0000-0001-8496-9975; Lo Vetere, Maurizio/0000-0002-6520-4480;
Grancagnolo, Sergio/0000-0001-8490-8304; Lusiani,
Alberto/0000-0002-6876-3288; Lusiani, Alberto/0000-0002-6876-3288;
Morandin, Mauro/0000-0003-4708-4240; Della Ricca,
Giuseppe/0000-0003-2831-6982; Di Lodovico,
Francesca/0000-0003-3952-2175; Calcaterra,
Alessandro/0000-0003-2670-4826; Frey, Raymond/0000-0003-0341-2636
NR 19
TC 21
Z9 20
U1 0
U2 4
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD SEP 24
PY 2004
VL 93
IS 13
AR 131805
DI 10.1103/PhysRevLett.93.131805
PG 7
WC Physics, Multidisciplinary
SC Physics
GA 857PS
UT WOS:000224131400025
ER
PT J
AU Aubert, B
Barate, R
Boutigny, D
Couderc, F
Gaillard, JM
Hicheur, A
Karyotakis, Y
Lees, JP
Tisserand, V
Zghiche, A
Palano, A
Pompili, A
Chen, JC
Qi, ND
Rong, G
Wang, P
Zhu, YS
Eigen, G
Ofte, I
Stugu, B
Abrams, GS
Borgland, AW
Breon, AB
Brown, DN
Button-Shafer, J
Cahn, RN
Charles, E
Day, CT
Gill, MS
Gritsan, AV
Groysman, Y
Jacobsen, RG
Kadel, RW
Kadyk, J
Kerth, LT
Kolomensky, YG
Kukartsev, G
Lynch, G
Mir, LM
Oddone, PJ
Orimoto, TJ
Pripstein, M
Roe, NA
Ronan, MT
Shelkov, VG
Wenzel, WA
Barrett, M
Ford, KE
Harrison, TJ
Hart, AJ
Hawkes, CM
Morgan, SE
Watson, AT
Fritsch, M
Goetzen, K
Held, T
Koch, H
Lewandowski, B
Pelizaeus, M
Steinke, M
Boyd, JT
Chevalier, N
Cottingham, WN
Kelly, MP
Latham, TE
Wilson, FF
Cuhadar-Donszelmann, T
Hearty, C
Knecht, NS
Mattison, TS
McKenna, JA
Thiessen, D
Khan, A
Kyberd, P
Teodorescu, L
Blinov, AE
Blinov, VE
Druzhinin, VP
Golubev, VB
Ivanchenko, VN
Kravchenko, EA
Onuchin, AP
Serednyakov, SI
Skovpen, YI
Solodov, EP
Yushkov, AN
Best, D
Bruinsma, M
Chao, M
Eschrich, I
Kirkby, D
Lankford, AJ
Mandelkern, M
Mommsen, RK
Roethel, W
Stoker, DP
Buchanan, C
Hartfiel, BL
Foulkes, SD
Gary, JW
Shen, BC
Wang, K
del Re, D
Hadavand, HK
Hill, EJ
MacFarlane, DB
Paar, HP
Rahatlou, S
Sharma, V
Berryhill, JW
Campagnari, C
Dahmes, B
Long, O
Lu, A
Mazur, MA
Richman, JD
Verkerke, W
Beck, TW
Eisner, AM
Heusch, CA
Kroseberg, J
Lockman, WS
Nesom, G
Schalk, T
Schumm, BA
Seiden, A
Spradlin, P
Williams, DC
Wilson, MG
Albert, J
Chen, E
Dubois-Felsmann, GP
Dvoretskii, A
Hitlin, DG
Narsky, I
Piatenko, T
Porter, FC
Ryd, A
Samuel, A
Yang, S
Jayatilleke, S
Mancinelli, G
Meadows, BT
Sokoloff, MD
Abe, T
Blanc, F
Bloom, P
Chen, S
Ford, WT
Nauenberg, U
Olivas, A
Rankin, P
Smith, JG
Zhang, J
Zhang, L
Chen, A
Harton, JL
Soffer, A
Toki, WH
Wilson, RJ
Zeng, QL
Altenburg, D
Brandt, T
Brose, J
Dickopp, M
Feltresi, E
Hauke, A
Lacker, HM
Muller-Pfefferkorn, R
Nogowski, R
Otto, S
Petzold, A
Schubert, J
Schubert, KR
Schwierz, R
Spaan, B
Sundermann, JE
Bernard, D
Bonneaud, GR
Brochard, F
Grenier, P
Schrenk, S
Thiebaux, C
Vasileiadis, G
Verderi, M
Bard, DJ
Clark, PJ
Lavin, D
Muheim, F
Playfer, S
Xie, Y
Andreotti, M
Azzolini, V
Bettoni, D
Bozzi, C
Calabrese, R
Cibinetto, G
Luppi, E
Negrini, M
Piemontese, L
Sarti, A
Treadwell, E
Anulli, F
Baldini-Ferroli, R
Calcaterra, A
de Sangro, R
Finocchiaro, G
Patteri, P
Peruzzi, IM
Piccolo, M
Zallo, A
Buzzo, A
Capra, R
Contri, R
Crosetti, G
Lo Vetere, M
Macri, M
Monge, MR
Passaggio, S
Patrignani, C
Robutti, E
Santroni, A
Tosi, S
Bailey, S
Brandenburg, G
Chaisanguanthum, KS
Morii, M
Won, E
Dubitzky, RS
Langenegger, U
Bhimji, W
Bowerman, DA
Dauncey, PD
Egede, U
Gaillard, JR
Morton, GW
Nash, JA
Nikolich, MB
Taylor, GP
Charles, MJ
Grenier, GJ
Mallik, U
Cochran, J
Crawley, HB
Lamsa, J
Meyer, WT
Prell, S
Rosenberg, EI
Rubin, AE
Yi, J
Biasini, M
Covarelli, R
Pioppi, M
Davier, M
Giroux, X
Grosdidier, G
Hocker, A
Laplace, S
Le Diberder, F
Lepeltier, V
Lutz, AM
Petersen, TC
Plaszczynski, S
Schune, MH
Tantot, L
Wormser, G
Cheng, CH
Lange, DJ
Simani, MC
Wright, DM
Bevan, AJ
Chavez, CA
Coleman, JP
Forster, IJ
Fry, JR
Gabathuler, E
Gamet, R
Hutchcroft, DE
Parry, RJ
Payne, DJ
Sloane, RJ
Touramanis, C
Back, JJ
Cormack, CM
Harrison, PF
Di Lodovico, F
Mohanty, GB
Brown, CL
Cowan, G
Flack, RL
Flaecher, HU
Green, MG
Jackson, PS
McMahon, TR
Ricciardi, S
Salvatore, F
Winter, MA
Brown, D
Davis, CL
Allison, J
Barlow, NR
Barlow, RJ
Hart, PA
Hodgkinson, MC
Lafferty, GD
Lyon, AJ
Williams, JC
Farbin, A
Hulsbergen, WD
Jawahery, A
Kovalskyi, D
Lae, CK
Lillard, V
Roberts, DA
Blaylock, G
Dallapiccola, C
Flood, KT
Hertzbach, SS
Kofler, R
Koptchev, VB
Moore, TB
Saremi, S
Staengle, H
Willocq, S
Cowan, R
Sciolla, G
Sekula, SJ
Taylor, F
Yamamoto, RK
Mangeol, DJJ
Patel, PM
Robertson, SH
Lazzaro, A
Lombardo, V
Palombo, F
Bauer, JM
Cremaldi, L
Eschenburg, V
Godang, R
Kroeger, R
Reidy, J
Sanders, DA
Summers, DJ
Zhao, HW
Brunet, S
Cote, D
Taras, P
Nicholson, H
Cavallo, N
Fabozzi, F
Gatto, C
Lista, L
Monorchio, D
Paolucci, P
Piccolo, D
Sciacca, C
Baak, M
Bulten, H
Raven, G
Snoek, HL
Wilden, L
Jessop, CP
LoSecco, JM
Allmendinger, T
Gan, KK
Honscheid, K
Hufnagel, D
Kagan, H
Kass, R
Pulliam, T
Rahimi, AM
Ter-Antonyan, R
Wong, QK
Brau, J
Frey, R
Igonkina, O
Potter, CT
Sinev, NB
Strom, D
Torrence, E
Colecchia, F
Dorigo, A
Galeazzi, F
Margoni, M
Morandin, M
Posocco, M
Rotondo, M
Simonetto, F
Stroili, R
Tiozzo, G
Voci, C
Benayoun, M
Briand, H
Chauveau, J
David, P
de la Vaissiere, C
Del Buono, L
Hamon, O
John, MJJ
Leruste, P
Malcles, J
Ocariz, J
Pivk, M
Roos, L
T'Jampens, S
Therin, G
Manfredi, PF
Re, V
Behera, PK
Gladney, L
Guo, QH
Panetta, J
Angelini, C
Batignani, G
Bettarini, S
Bondioli, M
Bucci, F
Calderini, G
Carpinelli, M
Forti, F
Giorgi, MA
Lusiani, A
Marchiori, G
Martinez-Vidal, F
Morganti, M
Neri, N
Paoloni, E
Rama, M
Rizzo, G
Sandrelli, F
Walsh, J
Haire, M
Judd, D
Paick, K
Wagoner, DE
Danielson, N
Elmer, P
Lau, YP
Lu, C
Miftakov, V
Olsen, J
Smith, AJS
Telnov, AV
Bellini, F
Cavoto, G
Faccini, R
Ferrarotto, F
Ferroni, F
Gaspero, M
Li Gioi, L
Mazzoni, MA
Morganti, S
Pierini, M
Piredda, G
Tehrani, FS
Voena, C
Christ, S
Wagner, G
Waldi, R
Adye, T
De Groot, N
Franek, B
Geddes, NI
Gopal, GP
Olaiya, EO
Aleksan, R
Emery, S
Gaidot, A
Ganzhur, SF
Giraud, PF
de Monchenault, GH
Kozanecki, W
Legendre, M
London, GW
Mayer, B
Schott, G
Vasseur, G
Yeche, C
Zito, M
Purohit, MV
Weidemann, AW
Wilson, JR
Yumiceva, FX
Aston, D
Bartoldus, R
Berger, N
Boyarski, AM
Buchmueller, OL
Claus, R
Convery, MR
Cristinziani, M
De Nardo, G
Dong, D
Dorfan, J
Dujmic, D
Dunwoodie, W
Elsen, EE
Fan, S
Field, RC
Glanzman, T
Gowdy, SJ
Hadig, T
Halyo, V
Hast, C
Hryn'ova, T
Innes, WR
Kelsey, MH
Kim, P
Kocian, ML
Leith, DWGS
Libby, J
Luitz, S
Luth, V
Lynch, HL
Marsiske, H
Messner, R
Muller, DR
O'Grady, CP
Ozcan, VE
Perazzo, A
Perl, M
Petrak, S
Ratcliff, BN
Roodman, A
Salnikov, AA
Schindler, RH
Schwiening, J
Simi, G
Snyder, A
Soha, A
Stelzer, J
Su, D
Sullivan, MK
Va'vra, J
Wagner, SR
Weaver, M
Weinstein, AJR
Wisniewski, WJ
Wittgen, M
Wright, DH
Yarritu, AK
Young, CC
Burchat, PR
Edwards, AJ
Meyer, TI
Petersen, BA
Roat, C
Ahmed, S
Alam, MS
Ernst, JA
Saeed, MA
Saleem, M
Wappler, FR
Bugg, W
Krishnamurthy, M
Spanier, SM
Eckmann, R
Kim, H
Ritchie, JL
Satpathy, A
Schwitters, RF
Izen, JM
Kitayama, I
Lou, XC
Ye, S
Bianchi, F
Bona, M
Gallo, F
Gamba, D
Bosisio, L
Cartaro, C
Cossutti, F
Della Ricca, G
Dittongo, S
Grancagnolo, S
Lanceri, L
Poropat, P
Vitale, L
Vuagnin, G
Panvini, RS
Banerjee, S
Brown, CM
Fortin, D
Jackson, PD
Kowalewski, R
Roney, JM
Sobie, RJ
Band, HR
Cheng, B
Dasu, S
Datta, M
Eichenbaum, AM
Graham, M
Hollar, JJ
Johnson, JR
Kutter, PE
Li, H
Liu, R
Mihalyi, A
Mohapatra, AK
Pan, Y
Prepost, R
Tan, P
von Wimmersperg-Toeller, JH
Wu, J
Wu, SL
Yu, Z
Greene, MG
Neal, H
AF Aubert, B
Barate, R
Boutigny, D
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Gaillard, JM
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Shelkov, VG
Wenzel, WA
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Ford, KE
Harrison, TJ
Hart, AJ
Hawkes, CM
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Held, T
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Golubev, VB
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Morton, GW
Nash, JA
Nikolich, MB
Taylor, GP
Charles, MJ
Grenier, GJ
Mallik, U
Cochran, J
Crawley, HB
Lamsa, J
Meyer, WT
Prell, S
Rosenberg, EI
Rubin, AE
Yi, J
Biasini, M
Covarelli, R
Pioppi, M
Davier, M
Giroux, X
Grosdidier, G
Hocker, A
Laplace, S
Le Diberder, F
Lepeltier, V
Lutz, AM
Petersen, TC
Plaszczynski, S
Schune, MH
Tantot, L
Wormser, G
Cheng, CH
Lange, DJ
Simani, MC
Wright, DM
Bevan, AJ
Chavez, CA
Coleman, JP
Forster, IJ
Fry, JR
Gabathuler, E
Gamet, R
Hutchcroft, DE
Parry, RJ
Payne, DJ
Sloane, RJ
Touramanis, C
Back, JJ
Cormack, CM
Harrison, PF
Di Lodovico, F
Mohanty, GB
Brown, CL
Cowan, G
Flack, RL
Flaecher, HU
Green, MG
Jackson, PS
McMahon, TR
Ricciardi, S
Salvatore, F
Winter, MA
Brown, D
Davis, CL
Allison, J
Barlow, NR
Barlow, RJ
Hart, PA
Hodgkinson, MC
Lafferty, GD
Lyon, AJ
Williams, JC
Farbin, A
Hulsbergen, WD
Jawahery, A
Kovalskyi, D
Lae, CK
Lillard, V
Roberts, DA
Blaylock, G
Dallapiccola, C
Flood, KT
Hertzbach, SS
Kofler, R
Koptchev, VB
Moore, TB
Saremi, S
Staengle, H
Willocq, S
Cowan, R
Sciolla, G
Sekula, SJ
Taylor, F
Yamamoto, RK
Mangeol, DJJ
Patel, PM
Robertson, SH
Lazzaro, A
Lombardo, V
Palombo, F
Bauer, JM
Cremaldi, L
Eschenburg, V
Godang, R
Kroeger, R
Reidy, J
Sanders, DA
Summers, DJ
Zhao, HW
Brunet, S
Cote, D
Taras, P
Nicholson, H
Cavallo, N
Fabozzi, F
Gatto, C
Lista, L
Monorchio, D
Paolucci, P
Piccolo, D
Sciacca, C
Baak, M
Bulten, H
Raven, G
Snoek, HL
Wilden, L
Jessop, CP
LoSecco, JM
Allmendinger, T
Gan, KK
Honscheid, K
Hufnagel, D
Kagan, H
Kass, R
Pulliam, T
Rahimi, AM
Ter-Antonyan, R
Wong, QK
Brau, J
Frey, R
Igonkina, O
Potter, CT
Sinev, NB
Strom, D
Torrence, E
Colecchia, F
Dorigo, A
Galeazzi, F
Margoni, M
Morandin, M
Posocco, M
Rotondo, M
Simonetto, F
Stroili, R
Tiozzo, G
Voci, C
Benayoun, M
Briand, H
Chauveau, J
David, P
de la Vaissiere, C
Del Buono, L
Hamon, O
John, MJJ
Leruste, P
Malcles, J
Ocariz, J
Pivk, M
Roos, L
T'Jampens, S
Therin, G
Manfredi, PF
Re, V
Behera, PK
Gladney, L
Guo, QH
Panetta, J
Angelini, C
Batignani, G
Bettarini, S
Bondioli, M
Bucci, F
Calderini, G
Carpinelli, M
Forti, F
Giorgi, MA
Lusiani, A
Marchiori, G
Martinez-Vidal, F
Morganti, M
Neri, N
Paoloni, E
Rama, M
Rizzo, G
Sandrelli, F
Walsh, J
Haire, M
Judd, D
Paick, K
Wagoner, DE
Danielson, N
Elmer, P
Lau, YP
Lu, C
Miftakov, V
Olsen, J
Smith, AJS
Telnov, AV
Bellini, F
Cavoto, G
Faccini, R
Ferrarotto, F
Ferroni, F
Gaspero, M
Li Gioi, L
Mazzoni, MA
Morganti, S
Pierini, M
Piredda, G
Tehrani, FS
Voena, C
Christ, S
Wagner, G
Waldi, R
Adye, T
De Groot, N
Franek, B
Geddes, NI
Gopal, GP
Olaiya, EO
Aleksan, R
Emery, S
Gaidot, A
Ganzhur, SF
Giraud, PF
de Monchenault, GH
Kozanecki, W
Legendre, M
London, GW
Mayer, B
Schott, G
Vasseur, G
Yeche, C
Zito, M
Purohit, MV
Weidemann, AW
Wilson, JR
Yumiceva, FX
Aston, D
Bartoldus, R
Berger, N
Boyarski, AM
Buchmueller, OL
Claus, R
Convery, MR
Cristinziani, M
De Nardo, G
Dong, D
Dorfan, J
Dujmic, D
Dunwoodie, W
Elsen, EE
Fan, S
Field, RC
Glanzman, T
Gowdy, SJ
Hadig, T
Halyo, V
Hast, C
Hryn'ova, T
Innes, WR
Kelsey, MH
Kim, P
Kocian, ML
Leith, DWGS
Libby, J
Luitz, S
Luth, V
Lynch, HL
Marsiske, H
Messner, R
Muller, DR
O'Grady, CP
Ozcan, VE
Perazzo, A
Perl, M
Petrak, S
Ratcliff, BN
Roodman, A
Salnikov, AA
Schindler, RH
Schwiening, J
Simi, G
Snyder, A
Soha, A
Stelzer, J
Su, D
Sullivan, MK
Va'vra, J
Wagner, SR
Weaver, M
Weinstein, AJR
Wisniewski, WJ
Wittgen, M
Wright, DH
Yarritu, AK
Young, CC
Burchat, PR
Edwards, AJ
Meyer, TI
Petersen, BA
Roat, C
Ahmed, S
Alam, MS
Ernst, JA
Saeed, MA
Saleem, M
Wappler, FR
Bugg, W
Krishnamurthy, M
Spanier, SM
Eckmann, R
Kim, H
Ritchie, JL
Satpathy, A
Schwitters, RF
Izen, JM
Kitayama, I
Lou, XC
Ye, S
Bianchi, F
Bona, M
Gallo, F
Gamba, D
Bosisio, L
Cartaro, C
Cossutti, F
Della Ricca, G
Dittongo, S
Grancagnolo, S
Lanceri, L
Poropat, P
Vitale, L
Vuagnin, G
Panvini, RS
Banerjee, S
Brown, CM
Fortin, D
Jackson, PD
Kowalewski, R
Roney, JM
Sobie, RJ
Band, HR
Cheng, B
Dasu, S
Datta, M
Eichenbaum, AM
Graham, M
Hollar, JJ
Johnson, JR
Kutter, PE
Li, H
Liu, R
Mihalyi, A
Mohapatra, AK
Pan, Y
Prepost, R
Tan, P
von Wimmersperg-Toeller, JH
Wu, J
Wu, SL
Yu, Z
Greene, MG
Neal, H
CA BaBar Collaboration
TI Direct CP violating asymmetry in B-0 -> K+pi(-) decays
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID NEUTRAL KAON
AB We present a measurement of the direct CP violating asymmetry in the decay B-0-->K(+)pi(-) using a data sample of 227x10(6) Y(4S)-->B (B) over bar decays ollected with the BABAR detector at the PEP-II asymmetric-energy e(+)e(-) collider at SLAC. We observe a total signal yield of n(K)(-)pi(+)+n(K)(+)pi(-)=1606+/-51 decays and measure the asymmetry (n(K)(-)pi(+)-n(K)(+)pi(-))/(n(K)(-)pi(+)+n(K)(+)pi(-))=-0.133+/-0.030(stat)+/-0.009(syst). The probability of observing such an asymmetry in the absence of direct CP violation is 1.3x10(-5), corresponding to 4.2 standard deviations.
C1 Phys Particules Lab, F-74941 Annecy Le Vieux, France.
Univ Basilicata, I-85100 Potenza, Italy.
Univ Valencia, CSIC, Inst Fis Corpuscular, IFIC, Valencia, Spain.
Univ Bari, Dipartmento Fis, I-70126 Bari, Italy.
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Inst High Energy Phys, Beijing 100039, Peoples R China.
Univ Bergen, Inst Phys, N-5007 Bergen, Norway.
Univ Calif Berkeley, Berkeley, CA 94720 USA.
Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
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Brunel Univ, Uxbridge UB8 3PH, Middx, England.
Budker Inst Nucl Phys, Novosibirsk 630090, Russia.
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Ecole Polytech, LLR, F-91128 Palaiseau, France.
Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland.
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Florida A&M Univ, Tallahassee, FL 32307 USA.
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Ist Nazl Fis Nucl, I-16146 Genoa, Italy.
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Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany.
Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England.
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Iowa State Univ, Ames, IA 50011 USA.
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Ist Nazl Fis Nucl, I-06100 Perugia, Italy.
Lab Accelerateur Lineaire, F-91898 Orsay, France.
Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
Univ Liverpool, Liverpool L69 72E, Merseyside, England.
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Univ London Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England.
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McGill Univ, Montreal, PQ H3A 2T8, Canada.
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Ist Nazl Fis Nucl, I-20133 Milan, Italy.
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Univ Montreal, Lab Rene JA Levesque, Montreal, PQ H3C 3J7, Canada.
Mt Holyoke Coll, S Hadley, MA 01075 USA.
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NIKHEF, Natl Inst Nucl Phys & High Energy Phys, NL-1009 DB Amsterdam, Netherlands.
Univ Notre Dame, Notre Dame, IN 46556 USA.
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Prairie View A&M Univ, Prairie View, TX 77446 USA.
Princeton Univ, Princeton, NJ 08544 USA.
Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy.
Ist Nazl Fis Nucl, I-00185 Rome, Italy.
Univ Rostock, D-18051 Rostock, Germany.
Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England.
CEA Saclay, DSM Dapnia, F-91191 Gif Sur Yvette, France.
Univ S Carolina, Columbia, SC 29208 USA.
Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA.
Stanford Univ, Stanford, CA 94305 USA.
SUNY Albany, Albany, NY 12222 USA.
Univ Tennessee, Knoxville, TN 37996 USA.
Univ Texas, Austin, TX 78712 USA.
Univ Texas, Richardson, TX 75083 USA.
Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, Italy.
Ist Nazl Fis Nucl, I-10125 Turin, Italy.
Univ Trieste, Dipartmento Fis, I-34127 Trieste, Italy.
Ist Nazl Fis Nucl, I-34127 Trieste, Italy.
Vanderbilt Univ, Nashville, TN 37235 USA.
Univ Victoria, Victoria, BC V8W 3P6, Canada.
Univ Wisconsin, Madison, WI 53706 USA.
Yale Univ, New Haven, CT 06511 USA.
RP Phys Particules Lab, F-74941 Annecy Le Vieux, France.
RI Martinez Vidal, F*/L-7563-2014; Kolomensky, Yury/I-3510-2015; Monge,
Maria Roberta/G-9127-2012; Luppi, Eleonora/A-4902-2015; Calabrese,
Roberto/G-4405-2015; Di Lodovico, Francesca/L-9109-2016; Lusiani,
Alberto/N-2976-2015; Morandin, Mauro/A-3308-2016; Lusiani,
Alberto/A-3329-2016; Della Ricca, Giuseppe/B-6826-2013; Mir,
Lluisa-Maria/G-7212-2015; Cavallo, Nicola/F-8913-2012; Lista,
Luca/C-5719-2008; Saeed, Mohammad Alam/J-7455-2012; de Groot,
Nicolo/A-2675-2009; Bellini, Fabio/D-1055-2009; crosetti,
nanni/H-3040-2011; Roe, Natalie/A-8798-2012; Neri, Nicola/G-3991-2012;
Forti, Francesco/H-3035-2011; Rotondo, Marcello/I-6043-2012; Patrignani,
Claudia/C-5223-2009; de Sangro, Riccardo/J-2901-2012; Sarti,
Alessio/I-2833-2012; M, Saleem/B-9137-2013; Calcaterra,
Alessandro/P-5260-2015; Frey, Raymond/E-2830-2016; Negrini,
Matteo/C-8906-2014; Grancagnolo, Sergio/J-3957-2015; Kravchenko,
Evgeniy/F-5457-2015; Peters, Klaus/C-2728-2008; Lo Vetere,
Maurizio/J-5049-2012
OI Martinez Vidal, F*/0000-0001-6841-6035; Kolomensky,
Yury/0000-0001-8496-9975; Monge, Maria Roberta/0000-0003-1633-3195;
Luppi, Eleonora/0000-0002-1072-5633; Calabrese,
Roberto/0000-0002-1354-5400; Di Lodovico, Francesca/0000-0003-3952-2175;
Lusiani, Alberto/0000-0002-6876-3288; Morandin,
Mauro/0000-0003-4708-4240; Lusiani, Alberto/0000-0002-6876-3288; Della
Ricca, Giuseppe/0000-0003-2831-6982; Mir,
Lluisa-Maria/0000-0002-4276-715X; Saeed, Mohammad
Alam/0000-0002-3529-9255; Bellini, Fabio/0000-0002-2936-660X; Neri,
Nicola/0000-0002-6106-3756; Forti, Francesco/0000-0001-6535-7965;
Rotondo, Marcello/0000-0001-5704-6163; Patrignani,
Claudia/0000-0002-5882-1747; de Sangro, Riccardo/0000-0002-3808-5455;
Sarti, Alessio/0000-0001-5419-7951; Calcaterra,
Alessandro/0000-0003-2670-4826; Frey, Raymond/0000-0003-0341-2636;
Negrini, Matteo/0000-0003-0101-6963; Grancagnolo,
Sergio/0000-0001-8490-8304; Peters, Klaus/0000-0001-7133-0662; Lo
Vetere, Maurizio/0000-0002-6520-4480
NR 18
TC 285
Z9 290
U1 0
U2 9
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD SEP 24
PY 2004
VL 93
IS 13
AR 131801
DI 10.1103/PhysRevLett.93.131801
PG 7
WC Physics, Multidisciplinary
SC Physics
GA 857PS
UT WOS:000224131400021
PM 15600911
ER
PT J
AU Feigel'man, MV
Ioselevich, AS
Skvortsov, MA
AF Feigel'man, MV
Ioselevich, AS
Skvortsov, MA
TI Quantum percolation in granular metals
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID DYNAMICS; FILMS
AB Theory of quantum corrections to conductivity of granular metal films is developed for the realistic case of large randomly distributed tunnel conductances. Quantum fluctuations of intergrain voltages (at energies E much below the bare charging energy scale E-C) suppress the mean conductance (g) over bar (E) much more strongly than its standard deviation sigma(E). At sufficiently low energies E-* any distribution becomes broad, with sigma(E-*)similar to(g) over bar (E-*), leading to strong local fluctuations of the tunneling density of states. The percolative nature of the metal-insulator transition is established by a combination of analytic and numerical analysis of the matrix renormalization group equations.
C1 LD Landau Theoret Phys Inst, Moscow 119334, Russia.
Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Feigel'man, MV (reprint author), LD Landau Theoret Phys Inst, Kosygina 2, Moscow 119334, Russia.
EM skvor@itp.ac.ru
RI Feigelman, Mikhail/M-4113-2013
NR 17
TC 15
Z9 15
U1 0
U2 0
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD SEP 24
PY 2004
VL 93
IS 13
AR 136403
DI 10.1103/PhysRevLett.93.136403
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 857PS
UT WOS:000224131400062
PM 15524744
ER
PT J
AU Kozlov, A
Sarty, AJ
Aniol, KA
Bartsch, P
Baumann, D
Bertozzi, W
Bohinc, K
Bohm, R
Chen, JP
Dale, D
Dennis, L
Derber, S
Ding, M
Distler, MO
Dragovitsch, P
Ewald, I
Fissum, KG
Friedrich, J
Friedrich, JM
Geiges, R
Gilad, S
Jennewein, P
Kahrau, M
Kohl, M
Krygier, KW
Liesenfeld, A
Margaziotis, DJ
Merkel, H
Merle, P
Muller, U
Neuhausen, R
Pospischil, T
Potokar, M
Riccardi, G
Roche, R
Rosner, G
Rowntree, D
Schmieden, H
Sirca, S
Templon, JA
Thompson, MN
Wagner, A
Walcher, T
Weis, M
Zhao, J
Zhou, ZL
Golak, J
Glockle, W
Witala, H
AF Kozlov, A
Sarty, AJ
Aniol, KA
Bartsch, P
Baumann, D
Bertozzi, W
Bohinc, K
Bohm, R
Chen, JP
Dale, D
Dennis, L
Derber, S
Ding, M
Distler, MO
Dragovitsch, P
Ewald, I
Fissum, KG
Friedrich, J
Friedrich, JM
Geiges, R
Gilad, S
Jennewein, P
Kahrau, M
Kohl, M
Krygier, KW
Liesenfeld, A
Margaziotis, DJ
Merkel, H
Merle, P
Muller, U
Neuhausen, R
Pospischil, T
Potokar, M
Riccardi, G
Roche, R
Rosner, G
Rowntree, D
Schmieden, H
Sirca, S
Templon, JA
Thompson, MN
Wagner, A
Walcher, T
Weis, M
Zhao, J
Zhou, ZL
Golak, J
Glockle, W
Witala, H
CA A1 Collaboration
TI Measurement of the exclusive He-3(e,e ' p) reaction below the
quasielastic peak
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID ELECTRON-SCATTERING; HE-3; MOMENTUM
AB New, high-precision measurements of the He-3(e,e(')p) reaction using the A1 Collaboration spectrometers at the Mainz microtron MAMI are presented. These were performed in antiparallel kinematics at energy transfers below the quasielastic peak, and at a central momentum transfer of 685 MeV/c. Cross sections and distorted momentum distributions were extracted and compared to theoretical predictions and existing data. The longitudinal and transverse behavior of the cross section was also studied. Sizable differences in the cross-section behavior from theoretical predictions based on the plane wave impulse approximation were observed in both the two- and three-body breakup channels. Full Faddeev-type calculations account for some of the observed excess cross-section, but significant differences remain.
C1 Univ Regina, Dept Phys, Regina, SK S4S 0A2, Canada.
Univ Melbourne, Sch Phys, Parkville, Vic 3010, Australia.
St Marys Univ, Dept Phys & Astron, Halifax, NS B3H 3C3, Canada.
Calif State Univ Los Angeles, Dept Phys & Astron, Los Angeles, CA 90032 USA.
Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany.
MIT, Nucl Sci Lab, Cambridge, MA 02139 USA.
Univ Ljubljana, Jozef Stefan Inst, SI-1001 Ljubljana, Slovenia.
Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA.
Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA.
Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany.
Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland.
Univ Georgia, Dept Phys & Astron, Athens, GA 30602 USA.
Ruhr Univ Bochum, Inst Theoret Phys 2, D-44780 Bochum, Germany.
Jagiellonian Univ, M Smoluchowski Inst Phys, PL-30059 Krakow, Poland.
RP Kozlov, A (reprint author), Univ Regina, Dept Phys, Regina, SK S4S 0A2, Canada.
RI riccardi, gabriele/A-9269-2012; Friedrich, Jan/B-9024-2013; Merkel,
Harald/B-9705-2013; Sarty, Adam/G-2948-2014
OI Friedrich, Jan/0000-0001-9298-7882;
NR 22
TC 4
Z9 4
U1 0
U2 2
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD SEP 24
PY 2004
VL 93
IS 13
AR 132301
DI 10.1103/PhysRevLett.93.132301
PG 5
WC Physics, Multidisciplinary
SC Physics
GA 857PS
UT WOS:000224131400028
PM 15524710
ER
PT J
AU Narayanan, S
Wang, J
Lin, XM
AF Narayanan, S
Wang, J
Lin, XM
TI Dynamical self-assembly of nanocrystal superlattices during colloidal
droplet evaporation by in situ small angle x-ray scattering
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID NANOPARTICLES; ORGANIZATION; NETWORKS
AB The nucleation and growth kinetics of highly ordered gold nanocrystal superlattices during the evaporation of nanocrystal colloidal droplets was elucidated by in situ time-resolved small-angle x-ray scattering. We demonstrated for the first time that the evaporation rate can affect the dimensionality of the superlattices. The formation of two-dimensional nanocrystal superlattices at the liquid-air interface of the droplet has exponential growth kinetics that originates from interface crushing.
C1 Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA.
Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
RP Narayanan, S (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
NR 25
TC 143
Z9 144
U1 5
U2 52
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD SEP 24
PY 2004
VL 93
IS 13
AR 135503
DI 10.1103/PhysRevLett.93.135503
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 857PS
UT WOS:000224131400052
PM 15524734
ER
PT J
AU Papenbrock, T
Weidenmuller, HA
AF Papenbrock, T
Weidenmuller, HA
TI Distribution of spectral widths and preponderance of spin-0 ground
states in nuclei
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID PHYSICS; SHELL
AB We use a single j-shell model with random two-body interactions to derive closed expressions for the distribution of and the correlations between spectral widths of different spins. This task is facilitated by introducing two-body operators whose squared spectral widths sum up to the squared spectral width of the random Hamiltonian. The spin-0 width is characterized by a relatively large average value and small fluctuations, while the width of maximum spin has the largest average and the largest fluctuations. The approximate proportionality between widths and spectral radii explains the preponderance of spin-0 ground states.
C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
Max Planck Inst Kernphys, D-69029 Heidelberg, Germany.
RP Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
NR 20
TC 45
Z9 46
U1 0
U2 0
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD SEP 24
PY 2004
VL 93
IS 13
AR 132503
DI 10.1103/PhysRevLett.93.132503
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 857PS
UT WOS:000224131400031
PM 15524713
ER
PT J
AU Reimerdes, H
Chu, MS
Garofalo, AM
Jackson, GL
La Haye, RJ
Navratil, GA
Okabayashi, M
Scoville, JT
Strait, EJ
AF Reimerdes, H
Chu, MS
Garofalo, AM
Jackson, GL
La Haye, RJ
Navratil, GA
Okabayashi, M
Scoville, JT
Strait, EJ
TI Measurement of the resistive-wall-mode stability in a rotating plasma
using active MHD spectroscopy
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID FEEDBACK STABILIZATION; DIII-D; TOKAMAKS; COILS
AB The stability of the resistive-wall mode (RWM) in DIII-D plasmas above the conventional pressure limit, where toroidal plasma rotation in the order of a few percent of the Alfven velocity is sufficient to stabilize the n=1 RWM, has been probed using the technique of active MHD spectroscopy at frequencies of a few Hertz. The measured frequency spectrum of the plasma response to externally applied rotating resonant magnetic fields is well described by a single-mode approach and provides an absolute measurement of the damping rate and the natural mode rotation frequency of the stable RWM.
C1 Columbia Univ, New York, NY 10027 USA.
Gen Atom Co, San Diego, CA USA.
Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
RP Reimerdes, H (reprint author), Columbia Univ, New York, NY 10027 USA.
NR 18
TC 66
Z9 68
U1 0
U2 2
PU AMERICAN PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD SEP 24
PY 2004
VL 93
IS 13
AR 135002
DI 10.1103/PhysRevLett.93.135002
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 857PS
UT WOS:000224131400046
PM 15524728
ER
PT J
AU Rigal, LB
Schmadel, DC
Drew, HD
Maiorov, B
Osquiguil, E
Preston, JS
Hughes, R
Gu, GD
AF Rigal, LB
Schmadel, DC
Drew, HD
Maiorov, B
Osquiguil, E
Preston, JS
Hughes, R
Gu, GD
TI Magneto-optical evidence for a gapped Fermi surface in underdoped
YBa2Cu3O6+x
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID ANGLE-RESOLVED PHOTOEMISSION; HIGH-TEMPERATURE SUPERCONDUCTORS;
THIN-FILM METALS; UNTWINNED YBA2CU3O6.95; NORMAL-STATE; HALL;
CONDUCTIVITY; DEPENDENCE; SCATTERING; PSEUDOGAP
AB The infrared (900-1100 cm(-1)) Faraday rotation and circular dichroism are measured in the normal state of underdoped High T-c superconductors and used to study the magnetotransport. YBa2Cu3O6+x thin films are investigated in the temperature range 10-300 K in magnetic fields up to 8 T and as a function of oxygen concentration. A dramatic increase of the Hall frequency is observed for underdoped samples, which is not consistent with the approach to a Mott transition but is consistent with a partial gapping of the Fermi surface as predicted in density wave models.
C1 Univ Maryland, Dept Phys, College Pk, MD 20742 USA.
Lab Natl Champs Magnetiques Pulses, F-31432 Toulouse, France.
Ctr Atom, De Bariloche, Argentina.
Inst Balseiro, De Bariloche, Argentina.
McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada.
Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
RP Univ Maryland, Dept Phys, College Pk, MD 20742 USA.
RI Preston, John/B-5773-2009; Hughes, Robert/O-1124-2013
OI Preston, John/0000-0002-1612-1048;
NR 29
TC 18
Z9 18
U1 0
U2 3
PU AMER PHYSICAL SOC
PI COLLEGE PK
PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
EI 1079-7114
J9 PHYS REV LETT
JI Phys. Rev. Lett.
PD SEP 24
PY 2004
VL 93
IS 13
AR 137002
DI 10.1103/PhysRevLett.93.137002
PG 4
WC Physics, Multidisciplinary
SC Physics
GA 857PS
UT WOS:000224131400070
PM 15524752
ER
EF