FN Thomson Reuters Web of Science™ VR 1.0 PT J AU Yeh, WW Rahman, I Hraber, P Giri, A Nevidomskyte, D Coffey, RT Asmal, M Miljkovic, S Whitney, JB Keele, BF Shaw, GM Korber, BT Seaman, MS Letvin, NL AF Yeh, W. W. Rahman, I. Hraber, P. Giri, A. Nevidomskyte, D. Coffey, R. T. Asmal, M. Miljkovic, S. Whitney, J. B. Keele, B. F. Shaw, G. M. Korber, B. T. Seaman, M. S. Letvin, N. L. TI Autologous neutralizing antibodies that select viral escape variants emerge late after SIV infection of rhesus monkeys SO RETROVIROLOGY LA English DT Meeting Abstract C1 [Yeh, W. W.; Rahman, I.; Giri, A.; Nevidomskyte, D.; Coffey, R. T.; Asmal, M.; Miljkovic, S.; Whitney, J. B.; Seaman, M. S.; Letvin, N. L.] Harvard Univ, Beth Israel Deaconess Med Ctr, Sch Med, Div Viral Pathogenesis, Boston, MA 02215 USA. [Hraber, P.; Korber, B. T.] Los Alamos Natl Lab, Los Alamos, NM USA. [Keele, B. F.; Shaw, G. M.] Univ Alabama, Birmingham, AL USA. OI Hraber, Peter/0000-0002-2920-4897 NR 0 TC 0 Z9 0 U1 0 U2 0 PU BIOMED CENTRAL LTD PI LONDON PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND SN 1742-4690 J9 RETROVIROLOGY JI Retrovirology PY 2009 VL 6 AR P24 PG 1 WC Virology SC Virology GA 509KL UT WOS:000271015300077 ER PT J AU Zuniga, R Mothe, B Llano, A Ibarrondo, J Daniels, M Farfan, M Suarez, J Szinger, JJ Hildebrand, W Lucchetti, A Heckerman, D Goulder, P Walker, BD Sanchez, J Korber, BT Brander, C AF Zuniga, R. Mothe, B. Llano, A. Ibarrondo, J. Daniels, M. Farfan, M. Suarez, J. Szinger, J. J. Hildebrand, W. Lucchetti, A. Heckerman, D. Goulder, P. Walker, B. D. Sanchez, J. Korber, B. T. Brander, C. TI HIV specific T cell responses and response patterns associated with viral control independent of classical non-progessor HLA class I alleles SO RETROVIROLOGY LA English DT Meeting Abstract C1 [Zuniga, R.; Farfan, M.; Suarez, J.; Lucchetti, A.] IMPACTA, Lima, Peru. [Daniels, M.; Szinger, J. J.; Korber, B. T.] Los Alamos Natl Lab, Los Alamos, NM USA. [Hildebrand, W.] Univ Oklahoma, Oklahoma City, OK USA. [Heckerman, D.] Microsoft Res, Redmond, WA USA. [Walker, B. D.] PARC, Boston, MA USA. [Sanchez, J.] INMENSA, Lima, Peru. [Mothe, B.; Llano, A.; Ibarrondo, J.; Goulder, P.; Brander, C.] Irsicaixa AIDS Res Inst, Badalona, Spain. NR 0 TC 0 Z9 0 U1 0 U2 0 PU BIOMED CENTRAL LTD PI LONDON PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND SN 1742-4690 J9 RETROVIROLOGY JI Retrovirology PY 2009 VL 6 AR O3 PG 1 WC Virology SC Virology GA 509KL UT WOS:000271015300004 ER PT S AU Gopalsami, N Chien, HT Elmer, T Bakhtiari, S Raptis, AC AF Gopalsami, N. Chien, H. -T. Elmer, T., II Bakhtiari, S. Raptis, A. C. BE Thompson, DO Chimenti, DE TI SURFACE PLASMON THZ RESONATORS FOR SECURITY APPLICATIONS SO REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 28A AND 28B SE AIP Conference Proceedings LA English DT Proceedings Paper CT 35th Annual Review of Progress in Quantitative Nondestructive Evaluation CY JUL 20-25, 2008 CL Univ Chicago, Chicago, IL HO Univ Chicago DE Terahertz; Microwave; Surface Plasmon; Electromagnetic Waves; Chemical Detection; Biological Detection ID TRANSMISSION AB This paper investigates the use of surface plasmonic effect in slit resonators for sensing and imaging in the terahertz regime. The transmittance of electromagnetic (EM) waves through a narrow aperture becomes negligible when the aperture size becomes much smaller than the wavelength. However, with the resonant excitation of charge density waves in the metal/air interface, called the surface plasmons, an extraordinary transmittance has been observed through such apertures. Using slit resonators of 50 to 100 Am width, we have demonstrated enhanced transmission of THz radiation through the slits. The ability to concentrate the EM radiation through a sub-wavelength aperture bodes well for detection of chemical or biological materials with high sensitivity or for super-resolution imaging of materials for NDE. We present results of using a slit resonator for chemical detection and for super-resolution imaging of materials for NDE. C1 [Gopalsami, N.; Chien, H. -T.; Elmer, T., II; Bakhtiari, S.; Raptis, A. C.] Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA. RP Gopalsami, N (reprint author), Argonne Natl Lab, Nucl Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 9 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0629-2 J9 AIP CONF PROC PY 2009 VL 1096 BP 440 EP 446 PG 7 WC Materials Science, Characterization & Testing; Physics, Applied SC Materials Science; Physics GA BKO01 UT WOS:000268740800054 ER PT S AU Sun, JG AF Sun, J. G. BE Thompson, DO Chimenti, DE TI THERMAL IMAGING ANALYSIS OF THERMAL BARRIER COATINGS SO REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 28A AND 28B SE AIP Conference Proceedings LA English DT Proceedings Paper CT 35th Annual Review of Progress in Quantitative Nondestructive Evaluation CY JUL 20-25, 2008 CL Univ Chicago, Chicago, IL HO Univ Chicago DE Thermal Imaging; Thermal Barrier Coating; Numerical Simulation; Thermal Property ID DIFFUSIVITY AB Pulsed thermal imaging has been widely used for nondestructive evaluation of thermal barrier coatings (TBCs). However, most of the current analysis methods are qualitative or semi-empirical, due partially to the lack of fundamental understanding of the thermal response to various TBC parameters. In this paper, the significance of various TBC parameters that dictate the thermal imaging data is investigated based on both theoretical and numerical methods. These parameters include TBC translucency, thickness, and thermal properties. It is identified that among the three TBC parameters, thickness and two thermal properties, one parameter cannot be uniquely determined from thermal imaging data. C1 Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA. RP Sun, JG (reprint author), Argonne Natl Lab, Nucl Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0629-2 J9 AIP CONF PROC PY 2009 VL 1096 BP 495 EP 502 PG 8 WC Materials Science, Characterization & Testing; Physics, Applied SC Materials Science; Physics GA BKO01 UT WOS:000268740800062 ER PT S AU Bach, HT Claytor, TN Hunter, JF Dozier, BE Nortier, FM Smith, DM Lenz, JW Moddrell, C Smith, PA AF Bach, H. T. Claytor, T. N. Hunter, J. F. Dozier, B. E. Nortier, F. M. Smith, D. M. Lenz, J. W. Moddrell, C. Smith, P. A. BE Thompson, DO Chimenti, DE TI ULTRASONIC AND RADIOGRAPHIC IMAGING OF NIOBIUM TARGET CAPSULES FOR RADIOISOTOPE PRODUCTION SO REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 28A AND 28B SE AIP Conference Proceedings LA English DT Proceedings Paper CT 35th Annual Review of Progress in Quantitative Nondestructive Evaluation CY JUL 20-25, 2008 CL Univ Chicago, Chicago, IL HO Univ Chicago DE Isotope Production; Ultrasonic Imaging; Computed Tomography; Digital Radiography AB In the case of proton-irradiated radioisotope production, niobium target capsules containing gallium are exposed to intense radiation, thermally induced stress, for extended periods. The structural integrity of the target capsules is of crucial importance for containing the accelerator-produced radioisotopes and target material. The capsule window should be as thin and transparent to the proton beam as possible, and preferably should not become significantly activated under proton irradiation. In addition, the material for the capsule needs to be as defect-free as possible. Niobium encapsulated gallium targets have a history of unpredictable failure under intense irradiation with 100 MeV protons. This study illustrates the utility of non-destructive testing in order to detect defects that may result in mechanical failure of the capsules during irradiation. Prior to this work, it was not known if the gallium initially wets the niobium capsule that encapsulates it, and if it does, it is not known to what degree. However, the imaging techniques used in this work show that local areas of wetting do occur. We used ultrasonic images from various lots of niobium capsule material to assess the integrity of the capsules. Digital radiography is also used to detect any voids in the gallium that will tend to cause local heating in the capsules. C1 [Bach, H. T.; Claytor, T. N.; Hunter, J. F.; Dozier, B. E.; Nortier, F. M.; Smith, D. M.] Los Alamos Natl Lab, MS J514, Los Alamos, NM 87545 USA. [Lenz, J. W.] John W Lenz Assoc, Waxahachie, TX 75165 USA. [Moddrell, C.; Smith, P. A.] PA Smith Concepts & Designs, Los Alamos, NM 87544 USA. RP Bach, HT (reprint author), Los Alamos Natl Lab, MS J514, Los Alamos, NM 87545 USA. FU U.S. Department of Energy's Office of Nuclear Energy FX This work is supported by the U.S. Department of Energy's Office of Nuclear Energy. Team members of the LANL Isotope Production Program and the LANSCE Accelerator Operation and Technology Division are acknowledged. The work is supported by the U.S. Department of Energy's Office of Nuclear Energy. Helpful disscussions with Bill Barton of Eagle Alloys Co. are acknowledged. NR 6 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0629-2 J9 AIP CONF PROC PY 2009 VL 1096 BP 674 EP + PG 2 WC Materials Science, Characterization & Testing; Physics, Applied SC Materials Science; Physics GA BKO01 UT WOS:000268740800085 ER PT S AU Habermehl, J Lamarre, A Roach, D AF Habermehl, J. Lamarre, A. Roach, D. BE Thompson, DO Chimenti, DE TI ULTRASONIC PHASED ARRAY TOOLS FOR LARGE AREA COMPOSITE INSPECTION DURING MAINTENANCE AND MANUFACTURING SO REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 28A AND 28B SE AIP Conference Proceedings LA English DT Proceedings Paper CT 35th Annual Review of Progress in Quantitative Nondestructive Evaluation CY JUL 20-25, 2008 CL Univ Chicago, Chicago, IL HO Univ Chicago DE Phased-Array; Composites; Maintenance; Manufacturing; Flat Panels; Probes; Probe Holders; Scanners AB Aircraft manufacturers, maintenance service providers, and airline operators have recently started to use ultrasonic phased-array technology to ensure the quality of their composite parts during maintenance and manufacturing. Olympus NDT has developed various solutions with its phased-array instruments like the OmniScan PA and the Focus LT to meet the most demanding requirements. These tools combined with composite specific software features provide greater productivity with respect to scanning and defect characterization such as sizing while maintaining a high degree of reliability. This paper summarizes the advantages and the benefits obtained by the use of this technology on samples provided by the FAA Airworthiness Assurance Center (AANC) operated by Sandia National Labs. C1 [Habermehl, J.; Lamarre, A.] Olympus NDT, Quebec City, PQ G1P 4S9, Canada. [Roach, D.] Sandia Natl Labs, Albuquerque, NM 87123 USA. RP Habermehl, J (reprint author), Olympus NDT, Quebec City, PQ G1P 4S9, Canada. NR 6 TC 1 Z9 1 U1 0 U2 6 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0629-2 J9 AIP CONF PROC PY 2009 VL 1096 BP 832 EP + PG 2 WC Materials Science, Characterization & Testing; Physics, Applied SC Materials Science; Physics GA BKO01 UT WOS:000268740800105 ER PT S AU Schmidt, KF Little, JR Ellingson, WA Green, W AF Schmidt, K. F., Jr. Little, J. R., Jr. Ellingson, W. A. Green, W. BE Thompson, DO Chimenti, DE TI A PORTABLE MICROWAVE INTERFERENCE SCANNING SYSTEM FOR NONDESTRUCTIVE TESTING OF MULTI-LAYERED DIELECTRIC MATERIALS SO REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 28A AND 28B SE AIP Conference Proceedings LA English DT Proceedings Paper CT 35th Annual Review of Progress in Quantitative Nondestructive Evaluation CY JUL 20-25, 2008 CL Univ Chicago, Chicago, IL HO Univ Chicago DE Microwave; NDT; Ceramics; Composites AB A portable, microwave interference scanning system, that can be used in situ, with one-sided, non-contact access, has been developed. It has demonstrated capability of damage detection on composite ceramic armor. Specimens used for validation included specially fabricated surrogates, and non-ballistic impact-damaged specimens. Microwave data results were corroborated with high resolution direct-digital x-ray imaging. Microwave interference scanning detects cracks, laminar features and material properties variations. This paper will present details of the system and discuss results obtained. C1 [Schmidt, K. F., Jr.; Little, J. R., Jr.] Evisive Inc, Baton Rouge, LA USA. [Ellingson, W. A.] Argonne Natl Lab, Argonne, IL USA. [Green, W.] Army Res Lab, Aberdeen Proving Ground, MD USA. RP Schmidt, KF (reprint author), Evisive Inc, Baton Rouge, LA USA. FU US Army RDECOM ARL; US Army RDECOM TARDEC FX This work is supported by the US Army RDECOM ARL and US Army RDECOM TARDEC whose staffs insight and technical contribution is much appreciated. NR 8 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0629-2 J9 AIP CONF PROC PY 2009 VL 1096 BP 1107 EP + PG 2 WC Materials Science, Characterization & Testing; Physics, Applied SC Materials Science; Physics GA BKO01 UT WOS:000268740800140 ER PT S AU Claytor, TN Hills, CR Grove, DR Kleinschmidt, PD Mitchell, JC Torney, RK AF Claytor, Thomas N. Hills, Charles R. Grove, Daniel R. Kleinschmidt, Phillip D. Mitchell, John C. Torney, Robert K. BE Thompson, DO Chimenti, DE TI HIGH-RESOLUTION ULTRASONIC IMAGING OF A DUAL-LAYER, BOND INTERFACE TARGET SO REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 28A AND 28B SE AIP Conference Proceedings LA English DT Proceedings Paper CT 35th Annual Review of Progress in Quantitative Nondestructive Evaluation CY JUL 20-25, 2008 CL Univ Chicago, Chicago, IL HO Univ Chicago DE Diffusion Bonding; Ultrasonic Transducer Characterization; Ultrasonic Imaging AB Various methods of simulating an unbonded layer have been proposed in the past but have been difficult to implement. Often, flat bottom holes are used to simulate an unbonded condition but the contrast ratio between holes and a true unbonded region can be quite different. Here we attempt to place a pattern that is unbonded at the interface between two elastically different materials. The differences in amplitude between the unbonded and bonded regions will allow a verification of quantitative amplitude differences and the pattern will allow the resolution of various transducers to be evaluated under realistic conditions. C1 [Claytor, Thomas N.; Hills, Charles R.; Grove, Daniel R.; Kleinschmidt, Phillip D.; Mitchell, John C.] Los Alamos Natl Lab, MS C914, Los Alamos, NM 87544 USA. [Kleinschmidt, Phillip D.; Mitchell, John C.; Torney, Robert K.] Stanford Univ, Stanford, CA 94305 USA. RP Claytor, TN (reprint author), Los Alamos Natl Lab, MS C914, Los Alamos, NM 87544 USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0629-2 J9 AIP CONF PROC PY 2009 VL 1096 BP 1142 EP + PG 2 WC Materials Science, Characterization & Testing; Physics, Applied SC Materials Science; Physics GA BKO01 UT WOS:000268740800145 ER PT S AU Bakhtiari, S Gopalsami, N Elmer, TW Raptis, AC AF Bakhtiari, S. Gopalsami, N. Elmer, T. W. Raptis, A. C. BE Thompson, DO Chimenti, DE TI MILLIMETER WAVE SENSOR FOR FAR-FIELD STANDOFF VIBROMETRY SO REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 28A AND 28B SE AIP Conference Proceedings LA English DT Proceedings Paper CT 35th Annual Review of Progress in Quantitative Nondestructive Evaluation CY JUL 20-25, 2008 CL Univ Chicago, Chicago, IL HO Univ Chicago DE Millimeter wave; Vibrometry; Biometric; Sensor; Standoff monitoring AB Current state-of-the-art in remote vibrometry is based predominantly on optical technology. Although these systems allow measurement of displacement with high degree of precision, they suffer from known limitations of optics including sensitivity to atmospheric conditions and surface scattering. We have developed a millimeter wave (MMW) counterpart of an optical vibrometer for the detection of acoustic signatures from common man-made structures and at far-field standoff distances. This compact W-band system employs solid-state active and passive components. The comparative studies carried out to date have demonstrated the advantages of the MMW sensor over commercial laser vibrometers with regard to detection range, ease of alignment, and reduced sensitivity to surface condition of the target. Although the system was intended initially for national security applications, it is expected that this technology will be useful for a wide range of applications including structural health monitoring, nondestructive examination of dielectric materials, and for biomedical sensing. Preliminary results are presented on the use of the MMW sensor for standoff detection of biometric signals. C1 [Bakhtiari, S.; Gopalsami, N.; Elmer, T. W.; Raptis, A. C.] Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA. RP Bakhtiari, S (reprint author), Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA. OI Elmer, Thomas/0000-0003-0363-5928 NR 8 TC 1 Z9 1 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0629-2 J9 AIP CONF PROC PY 2009 VL 1096 BP 1641 EP 1648 PG 8 WC Materials Science, Characterization & Testing; Physics, Applied SC Materials Science; Physics GA BKO01 UT WOS:000268740800210 ER PT S AU Smith, PD Claytor, TN Berry, PC Hills, CR Keating, SC Phillips, DH Setoodeh, S AF Smith, Peter D. Claytor, Thomas N. Berry, Phillip C. Hills, Charles R. Keating, Scott C. Phillips, David H. Setoodeh, Shariar BE Thompson, DO Chimenti, DE TI LOW SCATTER, HIGH KILOVOLT, A-SI FLAT PANEL X-RAY DETECTOR SO REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 28A AND 28B SE AIP Conference Proceedings LA English DT Proceedings Paper CT 35th Annual Review of Progress in Quantitative Nondestructive Evaluation CY JUL 20-25, 2008 CL Univ Chicago, Chicago, IL HO Univ Chicago DE a-Si Detector; Flat Panel X-Ray Detector; X-Ray Scattering; Computed Tomography ID HIGH-ENERGY AB We have been using amorphous silicon (a-Si) flat panel detectors in high energy (> 400kV) cone beam computed tomography (CT) applications for a number of years. We have found that these detectors have a significant amount of internal scatter that degrades the accuracy of attenuation images. The scatter errors cause cupping and streaking artifacts that are practically indistinguishable from beam hardening artifacts. Residual artifacts remain after beam hardening correction and over correction increases noise in CT reconstructions. Another important limitation of existing detectors is that they have a high failure rate, especially when operating at megavolt x-ray energies even with a well collimated beam. Due to the limitations of the current detectors, we decided to design a detector specifically for high energies that has significantly reduced scatter. In collaboration with IMTEC, we have built a prototype amorphous silicon flat panel detector that has both improved imaging response and increased lifetime. LANL's contribution is the "transparent panel concept" (patent pending), in which structures in the x-ray beam path are either eliminated or made as transparent to x-rays as practical (low atomic number and low areal density). This reduces scatter, makes attenuation measurements more accurate, improves the ability to make corrections for beam hardening, and increases signal to noise ratio in DR images and CT reconstructions. IMTEC's contribution is an improved shielding design that will increase the lifetime of the panel. Preliminary results showing the dramatic reduction in self scatter from the panel will be presented as well as the effect of this improvement on CT images. C1 [Smith, Peter D.; Claytor, Thomas N.; Berry, Phillip C.; Hills, Charles R.] Los Alamos Natl Lab, MS C914, Los Alamos, NM 87544 USA. [Keating, Scott C.; Phillips, David H.; Setoodeh, Shariar] IMTEC, Los Alamos, NM 87544 USA. RP Smith, PD (reprint author), Los Alamos Natl Lab, MS C914, Los Alamos, NM 87544 USA. FU Kyle Thompson of Sandia National Laboratory; Benjamin Dozier of Los Alamos National Laboratory FX We gratefully acknowledge the contribution and support of Kyle Thompson of Sandia National Laboratory and Benjamin Dozier of Los Alamos National Laboratory. NR 4 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0629-2 J9 AIP CONF PROC PY 2009 VL 1096 BP 1672 EP + PG 2 WC Materials Science, Characterization & Testing; Physics, Applied SC Materials Science; Physics GA BKO01 UT WOS:000268740800214 ER PT S AU Spencer, FW AF Spencer, F. W. BE Thompson, DO Chimenti, DE TI PROBABILITY OF DETECTION FOR DAMAGE: EXTENDING THE SINGLE FACTOR FLAW MODEL SO REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 28A AND 28B SE AIP Conference Proceedings LA English DT Proceedings Paper CT 35th Annual Review of Progress in Quantitative Nondestructive Evaluation CY JUL 20-25, 2008 CL Univ Chicago, Chicago, IL HO Univ Chicago DE Probability of Detection; Structural Health Monitoring; Nondestructive Inspection AB Traditionally, most probability of detection (POD) characterizations for NDI have been in terms of the detection rate expressed as a function of a single flaw characteristic. The application of onboard or embedded sensors for the purposes of health monitoring changes the probabilistic structure of the characterization. Instead of estimating the probability of detection conditioned on the presence of a flaw, the probabilistic issue becomes one of detection as flaw to capture the monitoring aspect for NDE. Instead of asking - what is the probability of detecting a flaw of length "x", we ask what is the probability that a flaw that develops and grows in time will be detected and, if detected, when? C1 Sandia Natl Labs, Independent Surveillance Assessment & Stat Dept, Albuquerque, NM 87185 USA. RP Spencer, FW (reprint author), Sandia Natl Labs, Independent Surveillance Assessment & Stat Dept, Albuquerque, NM 87185 USA. NR 3 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0629-2 J9 AIP CONF PROC PY 2009 VL 1096 BP 1777 EP 1783 PG 7 WC Materials Science, Characterization & Testing; Physics, Applied SC Materials Science; Physics GA BKO01 UT WOS:000268740800227 ER PT J AU Tang, V Solberg, JM Ferriera, TJ Tully, LK Stephan, PL AF Tang, V. Solberg, J. M. Ferriera, T. J. Tully, L. K. Stephan, P. L. TI Compact collimated fiber optic array diagnostic for railgun plasmas SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article DE fibre optic sensors; plasma diagnostics; plasma light propagation; railguns ID ARMATURE AB We developed and tested a compact collimated 16 channel fiber optic array diagnostic for studying the light emission of railgun armature plasmas with approximately millimeter spatial and submicrosecond temporal resolution. The design and operational details of the diagnostic are described. Plasma velocities, oscillation, and dimension data from the diagnostic for the Livermore fixed hybrid armature experiment are presented and compared with one-dimensional simulations. The techniques and principles discussed allow the extension of the diagnostic to other railgun and related dense plasma experiments. C1 [Tang, V.; Solberg, J. M.; Ferriera, T. J.; Tully, L. K.; Stephan, P. L.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Tang, V (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA. FU LLNL; U. S. Department of Energy [DE-AC52-07NA27344] FX We acknowledge and thank T. Clancy, D. Goerz, D. White, and R. Speer for fruitful discussions and technical assistance. This work was supported by LLNL with the auspices of the U. S. Department of Energy under Contract No. DE-AC52-07NA27344. NR 8 TC 0 Z9 0 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 JAN PY 2009 VL 80 IS 1 AR 016103 DI 10.1063/1.3053410 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 401TT UT WOS:000262966000042 PM 19191464 ER PT J AU Wang, X Nie, SH Park, H Li, JJ Clinite, R Li, RK Wang, XJ Cao, JM AF Wang, Xuan Nie, Shouhua Park, Hyuk Li, Junjie Clinite, Rick Li, Renkai Wang, Xijie Cao, Jianming TI Measurement of femtosecond electron pulse length and the temporal broadening due to space charge SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article DE electron diffraction; electron guns; high-speed techniques; space charge ID RAY STREAK CAMERA; PONDEROMOTIVE SCATTERING; DIFFRACTION; GUN AB The temporal width of ultrashort electron pulses as a function of beam intensity was measured on the femtosecond time scale with a customized streak camera. The results show that the temporal profile of an electron pulse is Gaussian at low beam intensity and progressively evolves to a top-hat shape due to space charge broadening as the beam intensity increases. The strong correlation between the pulse width and beam intensity observed in our streaking measurements agrees very well with the mean-field calculation and supports the main conclusion of previous theoretical studies that the space charge broadening plays a determinant role. C1 [Wang, Xuan; Nie, Shouhua; Park, Hyuk; Li, Junjie; Clinite, Rick; Cao, Jianming] Florida State Univ, Dept Phys, Tallahassee, FL 32310 USA. [Wang, Xuan; Nie, Shouhua; Park, Hyuk; Li, Junjie; Clinite, Rick; Cao, Jianming] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA. [Li, Renkai; Wang, Xijie] Brookhaven Natl Lab, NSLS, Upton, NY 11973 USA. RP Wang, X (reprint author), Florida State Univ, Dept Phys, Tallahassee, FL 32310 USA. EM jcao@magnet.fsu.edu RI Park, Hyuk/I-4865-2012; OI li, junjie/0000-0003-3135-9596; Li, Renkai/0000-0002-3163-5506 FU National Science Foundation [DMR-0606431] FX We would like to thank Dr. P. Xiong and Dr. S. von Molnar for the use of their coating equipment to prepare our photoconductive switches. This work was supported by the National Science Foundation under Grant No. DMR-0606431. NR 17 TC 14 Z9 15 U1 2 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 JAN PY 2009 VL 80 IS 1 AR 013902 DI 10.1063/1.3062863 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 401TT UT WOS:000262966000020 PM 19191442 ER PT J AU Weir, ST Jackson, DD Falabella, S Samudrala, G Vohra, YK AF Weir, S. T. Jackson, D. D. Falabella, S. Samudrala, G. Vohra, Y. K. TI An electrical microheater technique for high-pressure and high-temperature diamond anvil cell experiments SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article DE electric heating; gold; high-pressure effects; metallic thin films ID X-RAY-DIFFRACTION; SYSTEM; METAL AB Small electrical heating elements have been lithographically fabricated onto the culets of "designer" diamond anvils for the purpose of performing high-pressure and high-temperature experiments on metals. The thin-film geometry of the heating elements makes them very resistant to plastic deformation during high-pressure loading, and their small cross-sectional area enables them to be electrically heated to very high temperatures with relatively modest currents (approximate to 1 A). The technique also offers excellent control and temporal stability of the sample temperature. Test experiments on gold samples have been performed for pressures up to 21 GPa and temperatures of nearly 2000 K. C1 [Weir, S. T.; Jackson, D. D.; Falabella, S.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Samudrala, G.; Vohra, Y. K.] Univ Alabama, Dept Phys, Birmingham, AL 35294 USA. RP Weir, ST (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RI Weir, Samuel/H-5046-2012 FU U.S. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344] FX We thank C. Aracne and D. Ruddle for technical support. This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344. NR 22 TC 8 Z9 8 U1 0 U2 10 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 JAN PY 2009 VL 80 IS 1 AR 013905 DI 10.1063/1.3069286 PG 6 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA 401TT UT WOS:000262966000023 PM 19191445 ER PT J AU Mccullough, DA Bartholow, JM Jager, HI Beschta, RL Cheslak, EF Deas, ML Ebersole, JL Foott, JS Johnson, SL Marine, KR Mesa, MG Petersen, JH Souchon, Y Tiffan, KF Wurtsbaugh, WA AF Mccullough, Dale A. Bartholow, John M. Jager, Henriette I. Beschta, Robert L. Cheslak, Edward F. Deas, Michael L. Ebersole, Joseph L. Foott, J. Scott Johnson, Sherri L. Marine, Keith R. Mesa, Matthew G. Petersen, James H. Souchon, Yves Tiffan, Kenneth F. Wurtsbaugh, Wayne A. TI Research in Thermal Biology: Burning Questions for Coldwater Stream Fishes SO REVIEWS IN FISHERIES SCIENCE LA English DT Review DE water temperature; global warming; genetics; physiology; ecosystem; salmonids ID TROUT ONCORHYNCHUS-MYKISS; SALMON SALMO-SALAR; BONNEVILLE CUTTHROAT TROUT; JUVENILE RAINBOW-TROUT; FALL CHINOOK SALMON; UPPER TEMPERATURE TOLERANCE; INDIVIDUAL-BASED MODEL; GLOBAL CLIMATE-CHANGE; WATER TEMPERATURE; ATLANTIC SALMON AB With the increasing appreciation of global warming impacts on ecological systems, in addition to the myriad of land management effects on water quality, the number of literature citations dealing with the effects of water temperature on freshwater fish has escalated in the past decade. Given the many biological scales at which water temperature effects have been studied, and the growing need to integrate knowledge from multiple disciplines of thermal biology to fully protect beneficial uses, we held that a survey of the most promising recent developments and an expression of some of the remaining unanswered questions with significant management implications would best be approached collectively by a diverse research community. We have identified five specific topic areas of renewed research where new techniques and critical thought could benefit coldwater stream fishes (particularly salmonids): molecular, organism, population/ species, community and ecosystem, and policy issues in water quality. Our hope is that information gained through examination of recent research fronts linking knowledge at various scales will prove useful in managing water quality at a basin level to protect fish populations and whole ecosystems. Standards of the past were based largely on incipient lethal and optimum growth rate temperatures for fish species, while future standards should consider all integrated thermal impacts to the organism and ecosystem. C1 [Mccullough, Dale A.] Columbia River Intertribal Fish Commiss, Portland, OR 97232 USA. [Bartholow, John M.] US Geol Survey, Ft Collins Sci Ctr, Ft Collins, CO USA. [Jager, Henriette I.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. [Beschta, Robert L.] Oregon State Univ, Coll Forestry, Corvallis, OR 97331 USA. [Cheslak, Edward F.] Pacific Gas & Elect Co, Tech & Ecol Serv, San Ramon, CA USA. [Deas, Michael L.] Watercourse Engn Inc, Davis, CA USA. [Ebersole, Joseph L.] US EPA, Western Ecol Div, Natl Hlth & Environm Effects Res Lab, Off Res & Dev, Corvallis, OR USA. [Foott, J. Scott] US Fish & Wildlife Serv, CA NV Fish Hlth Ctr, Anderson, CA USA. [Johnson, Sherri L.] US Forest Serv, Pacific NW Res Stn, Corvallis, OR 97331 USA. [Marine, Keith R.] N State Resources Inc, Redding, CA USA. [Mesa, Matthew G.; Petersen, James H.; Tiffan, Kenneth F.] US Geol Survey, Western Fisheries Res Ctr, Columbia River Res Lab, Cook, WA USA. [Souchon, Yves] Irstea, Unite Rech Biol Ecosyst Aquat, Lab Hydroecol Quantitat, Lyon, France. [Wurtsbaugh, Wayne A.] Utah State Univ, Watershed Sci Dept, Ctr Ecol, Logan, UT 84322 USA. RP Mccullough, DA (reprint author), Columbia River Intertribal Fish Commiss, 729 NE Oregon St,Ste 200, Portland, OR 97232 USA. EM mccd@critfc.org RI Wurtsbaugh, Wayne/G-6856-2011; OI Tiffan, Kenneth/0000-0002-5831-2846; Jager, Henriette/0000-0003-4253-533X NR 204 TC 77 Z9 77 U1 9 U2 97 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA SN 1064-1262 EI 1547-6553 J9 REV FISH SCI JI Rev. Fish. Sci. PY 2009 VL 17 IS 1 BP 90 EP 115 DI 10.1080/10641260802590152 PG 26 WC Fisheries SC Fisheries GA 416HD UT WOS:000263995500006 ER PT S AU Chao, AW Chou, WR AF Chao, Alexander W. Chou, Weiren BE Chao, AW Chou, W TI Reviews of Accelerator Science and Technology Volume 2 Editorial Preface SO REVIEWS OF ACCELERATOR SCIENCE AND TECHNOLOGY, VOL 2: MEDICAL APPLICATIONS OF ACCELERATORS SE Reviews of Accelerator Science and Technology LA English DT Editorial Material; Book Chapter C1 [Chao, Alexander W.] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA. [Chou, Weiren] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Chao, AW (reprint author), SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA. EM achao@slac.stanford.edu; chou@fnal.gov NR 0 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE SN 1793-6268 BN 978-981-429-935-0; 978-981-4299-34-3 J9 REV ACCEL SCI TECH PY 2009 VL 2 BP VII EP VIII PG 2 WC Physics, Applied; Physics, Particles & Fields; Radiology, Nuclear Medicine & Medical Imaging SC Physics; Radiology, Nuclear Medicine & Medical Imaging GA BE2SL UT WOS:000369971700001 ER PT S AU Trbojevic, D AF Trbojevic, Dejan BE Chao, AW Chou, W TI FFACs as Accelerators and Beam Delivery Devices for Ion Cancer Therapy SO REVIEWS OF ACCELERATOR SCIENCE AND TECHNOLOGY, VOL 2: MEDICAL APPLICATIONS OF ACCELERATORS SE Reviews of Accelerator Science and Technology LA English DT Article; Book Chapter DE Fixed Field Alternating Gradient Accelerators (FFAG); Non-scaling FFAG; scaling FFAG; gantries; cancer therapy; isocentric gantries; gantry beam delivery devices; Bragg peak AB First, a review is given of fixed field alternating gradient (FFAG) accelerators, presenting a bit of their history and basic concepts. Special attention is paid to the concept of scaling (S-FFAG) and nonscaling (NS-FFAG) FFAGs. This notation is used only in the NS FFAG part of the article. A discussion is then provided on operating FTAGs. A presentation is made of the designs being considered for S-IFFAGs. A bit more is said about the concept of the NS-FFAG and a resonance crossing problem resulting from designs of the NS-IFFAGs. A beam delivery systeM (gantry) employing the NS-FFAG concept is presented after that and, finally, future plans and R&D requirements are put forward. C1 [Trbojevic, Dejan] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Trbojevic, D (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. EM trbojevic@bnl.gov NR 35 TC 10 Z9 10 U1 0 U2 1 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE SN 1793-6268 BN 978-981-429-935-0; 978-981-4299-34-3 J9 REV ACCEL SCI TECH PY 2009 VL 2 BP 229 EP 251 PG 23 WC Physics, Applied; Physics, Particles & Fields; Radiology, Nuclear Medicine & Medical Imaging SC Physics; Radiology, Nuclear Medicine & Medical Imaging GA BE2SL UT WOS:000369971700012 ER PT S AU Caporaso, GJ Chen, YJ Sampayan, SE AF Caporaso, George J. Chen, Yu-Jiuan Sampayan, Stephen E. BE Chao, AW Chou, W TI The Dielectric Wall Accelerator SO REVIEWS OF ACCELERATOR SCIENCE AND TECHNOLOGY, VOL 2: MEDICAL APPLICATIONS OF ACCELERATORS SE Reviews of Accelerator Science and Technology LA English DT Article; Book Chapter DE Dielectric wall accelerators; hadron therapy; proton therapy; high gradient insulators; photoconductive switches ID LINEAR INDUCTION ACCELERATOR AB Dielectric wall accelerators, a class of induction accelerators, employ a novel insulating beam tube to impress a longitudinal electric field on a bunch of charged particles. The surface flashover characteristics of this tube may permit the attainment of accelerating gradients on the order of 100 MV/`m for accelerating pulses on the order of a nanosecond in duration. A virtual traveling wave of excitation along the tube is produced at any desired speed by controlling the timing of pulse -generating modules that supply a tangential electric field to the tube wall. Because of the ability to control the speed of this virtual wave, the accelerator is capable of handling any charge -to -mass -ratio particle; hence it can be used for electrons, protons and any ion. The accelerator architectures, key technologies and development challenges will be described. C1 [Caporaso, George J.; Chen, Yu-Jiuan; Sampayan, Stephen E.] Lawrence Livermore Natl Lab, 1-410,POB 808, Livermore, CA 94551 USA. RP Caporaso, GJ (reprint author), Lawrence Livermore Natl Lab, 1-410,POB 808, Livermore, CA 94551 USA. EM gjcaporaso@aol.com; chen6@llnl.gov; sampayan1@llnl.gov NR 18 TC 14 Z9 18 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE SN 1793-6268 BN 978-981-429-935-0; 978-981-4299-34-3 J9 REV ACCEL SCI TECH PY 2009 VL 2 BP 253 EP 263 PG 11 WC Physics, Applied; Physics, Particles & Fields; Radiology, Nuclear Medicine & Medical Imaging SC Physics; Radiology, Nuclear Medicine & Medical Imaging GA BE2SL UT WOS:000369971700013 ER PT J AU Moore, KT van der Laan, G AF Moore, Kevin T. van der Laan, Gerrit TI Nature of the 5f states in actinide metals SO REVIEWS OF MODERN PHYSICS LA English DT Review DE americium; curium; electron energy loss spectra; electronic density of states; magnetic structure; neptunium; plutonium; thorium; uranium ID X-RAY-ABSORPTION; MAGNETIC CIRCULAR-DICHROISM; ELECTRON-ENERGY-LOSS; CHARGE-DENSITY-WAVE; RARE-EARTH-ELEMENTS; PU-GA ALLOYS; SUPERCONDUCTING TRANSITION-TEMPERATURE; CORE-LEVEL PHOTOEMISSION; PRESSURE-PHASE-DIAGRAM; PHOTOELECTRON-SPECTROSCOPY AB Actinide elements produce a plethora of interesting physical behaviors due to the 5f states. This review compiles and analyzes progress in the understanding of the electronic and magnetic structure of the 5f states in actinide metals. Particular interest is given to electron energy-loss spectroscopy and many-electron atomic spectral calculations, since there is now an appreciable library of core d -> valence f transitions for Th, U, Np, Pu, Am, and Cm. These results are interwoven and discussed against published experimental data, such as x-ray photoemission and absorption spectroscopy, transport measurements, and electron, x-ray, and neutron diffraction, as well as theoretical results, such as density-functional theory and dynamical mean-field theory. C1 [Moore, Kevin T.] Lawrence Livermore Natl Lab, Chem & Mat Sci Directorate, Livermore, CA 94550 USA. [van der Laan, Gerrit] Diamond Light Source, Didcot OX11 0DE, Oxon, England. [van der Laan, Gerrit] STFC Daresbury Lab, Warrington WA4 4AD, Cheshire, England. [van der Laan, Gerrit] Univ Manchester, Sch Earth Atmospher & Environm Sci, Manchester M13 9PL, Lancs, England. RP Moore, KT (reprint author), Lawrence Livermore Natl Lab, Chem & Mat Sci Directorate, Livermore, CA 94550 USA. EM moore78@llnl.gov RI van der Laan, Gerrit/Q-1662-2015 OI van der Laan, Gerrit/0000-0001-6852-2495 FU U.S. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344] FX We greatly thank the following people for critical review of this manuscript: Ladia Havela, Gerry Lander, Jason Lashley, Michael Manley, Chris Marianetti, Scott McCall, Adam Schwartz, and Per Soderlind. We also thank Stephen Heathman for his help in ensuring that the high pressure research is presented correctly, and Richard Haire for synthesis of Am and Cm samples. We also thank the following colleagues for prior and/or current collaborations: Mark Wall, Adam Schwartz, Per Suderlind, Theo Thole, Richard Haire, Brandon Chung, Simon Morton, David Shuh, Roland Schulze, Sorin Lazar, Frans Tichelaar, and Henny Zandbergen. This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344. NR 431 TC 220 Z9 221 U1 9 U2 128 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 JAN-MAR PY 2009 VL 81 IS 1 BP 235 EP 298 DI 10.1103/RevModPhys.81.235 PG 64 WC Physics, Multidisciplinary SC Physics GA 427FG UT WOS:000264764600006 ER PT J AU Accardi, A Arleo, F Brooks, WK D'Enterria, D Muccifora, V AF Accardi, A. Arleo, F. Brooks, W. K. D'Enterria, D. Muccifora, V. TI Parton propagation and fragmentation in QCD matter SO RIVISTA DEL NUOVO CIMENTO LA English DT Review ID HEAVY-ION COLLISIONS; COLOR GLASS CONDENSATE; QUARK-GLUON PLASMA; DEEP-INELASTIC-SCATTERING; RADIATIVE ENERGY-LOSS; NUCLEUS-NUCLEUS COLLISIONS; LARGE TRANSVERSE-MOMENTUM; HIGH-P(T) HADRON SPECTRA; DEUTERON-GOLD COLLISIONS; FINAL-STATE INTERACTIONS AB We review recent progress in the study of parton propagation, interaction and fragmentation in both cold and hot strongly interacting matter. Experimental highlights on high-energy hadron production in deep inelastic lepton-nucleus scattering, proton-nucleus and heavy-ion collisions, as well as Drell-Yan processes in hadron-nucleus collisions are presented. The existing theoretical frameworks for describing the in-medium interaction of energetic partons and the space-time evolution of their fragmentation into hadrons are discussed and confronted to experimental data. We conclude with a list of theoretical and experimental open issues, and a brief description of future relevant experiments and facilities C1 [Accardi, A.] Hampton Univ, Hampton, VA 23668 USA. [Accardi, A.] Jefferson Lab, Newport News, VA 23606 USA. [Arleo, F.] Univ Savoie, CNRS, UMR5108, LAPTH, F-74941 Annecy Le Vieux, France. [Brooks, W. K.] Univ Tecn Federico Santa Maria, Dept Fis, Valparaiso, Chile. [Brooks, W. K.] Univ Tecn Federico Santa Maria, Ctr Estudios Subatom, Valparaiso, Chile. [D'Enterria, D.] CERN, PH EP, CH-1211 Geneva 23, Switzerland. [D'Enterria, D.] MIT, LNS, Cambridge, MA 02139 USA. [Muccifora, V.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Roma, Italy. RP Accardi, A (reprint author), Hampton Univ, Hampton, VA 23668 USA. EM valeria.muccifora@lnf.infn.it RI Brooks, William/C-8636-2013 OI Brooks, William/0000-0001-6161-3570 FU DOE [DE-AC02-06CH11357, IDE-AC05-06OR23177, DE-AC05-06OR23177]; NSF [0653508]; EU [MEIF-CT-2005-025073]; Conicyt/Fondecyt [1080564] FX A.A. wishes to thank J. MORFIN for helpful discussions and encouragement, and acknowledges support by DOE contract No. DE-AC02-06CH11357, DOE contract No. IDE-AC05-06OR23177 (tinder which Jefferson Science Associates, LLC operates Jefferson Lab), and NSF award No. 0653508. F. A. would like to thank the hospitality of CERN TH division, where part of this work was carried out. D.D'E. acknowledges support by 6th EU Framework Programme tinder contract MEIF-CT-2005-025073. W.K.B. acknowledges support from DOE contract No. DE-AC05-06OR23177 (tinder which Jefferson Science Associates, LLC operates Jefferson Lab) and Conicyt/Fondecyt Grant 1080564. NR 413 TC 26 Z9 26 U1 0 U2 5 PU SOC ITALIANA FISICA PI BOLOGNA PA VIA SARAGOZZA, 12, I-40123 BOLOGNA, ITALY SN 0393-697X EI 1826-9850 J9 RIV NUOVO CIMENTO JI Riv. Nuovo Cimento PY 2009 VL 32 IS 9-10 BP 439 EP 553 DI 10.1393/ncr/i2009-10048-0 PG 115 WC Physics, Multidisciplinary SC Physics GA 541XU UT WOS:000273455600001 ER PT J AU Stoyer, MA Ahle, LE Becker, JA Bernstein, LA Bleuel, DL Burke, JT Dashdorj, D Henderson, RA Hurst, AM Kenneally, JM Lesher, SR Moody, KJ Nelson, SL Norman, EB Pedretti, M Scielzo, ND Shaughnessy, DA Sheets, SA Stoeffl, W Stoyer, NJ Wiedeking, M Wilk, PA Wu, CY AF Stoyer, M. A. Ahle, L. E. Becker, J. A. Bernstein, L. A. Bleuel, D. L. Burke, J. T. Dashdorj, D. Henderson, R. A. Hurst, A. M. Kenneally, J. M. Lesher, S. R. Moody, K. J. Nelson, S. L. Norman, E. B. Pedretti, M. Scielzo, N. D. Shaughnessy, D. A. Sheets, S. A. Stoeffl, W. Stoyer, N. J. Wiedeking, M. Wilk, P. A. Wu, C. Y. TI Nuclear physics and heavy element research at Lawrence Livermore National Laboratory SO RUSSIAN CHEMICAL REVIEWS LA English DT Review ID SPONTANEOUS FISSION; SUPERHEAVY NUCLEI; GAMMASPHERE; STABILITY; DETECTOR; N=162 AB This paper highlights some of the current basic nuclear physics research at Lawrence Livermore National Laboratory (LLNL). The work at LLNL concentrates on investigating nuclei at the extremes. The Experimental Nuclear Physics Group performs research to improve our understanding of nuclei, nuclear reactions, nuclear decay processes and nuclear astrophysics; an expertise utilized for important laboratory national security programs and for world-class peer-reviewed basic research. The bibliography includes 42 references. C1 [Stoyer, M. A.; Ahle, L. E.; Becker, J. A.; Bernstein, L. A.; Bleuel, D. L.; Burke, J. T.; Dashdorj, D.; Henderson, R. A.; Hurst, A. M.; Kenneally, J. M.; Lesher, S. R.; Moody, K. J.; Nelson, S. L.; Norman, E. B.; Pedretti, M.; Scielzo, N. D.; Shaughnessy, D. A.; Sheets, S. A.; Stoeffl, W.; Stoyer, N. J.; Wiedeking, M.; Wilk, P. A.; Wu, C. Y.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Stoyer, MA (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. EM stoyer1@llnl.gov RI Wilk, Philip/B-5954-2008 FU U.S. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344, 04-ERD-085] FX This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. Some of this work was funded by the Laboratory Directed Research and Development Programme at LLNL under Project tracking code 04-ERD-085. NR 41 TC 0 Z9 0 U1 1 U2 4 PU TURPION LTD PI BRISTOL PA C/O TURPION LTD, IOP PUBLISHING, TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6HG, ENGLAND SN 0036-021X EI 1468-4837 J9 RUSS CHEM REV+ JI Russ. Chem. Rev. PY 2009 VL 78 IS 12 BP 1145 EP 1152 DI 10.1070/RC2009v078n12ABEH004081 PG 8 WC Chemistry, Multidisciplinary SC Chemistry GA 562OR UT WOS:000275062500007 ER PT S AU Li, YY Olama, M Djouadi, S Fathy, A Kuruganti, T AF Li, Yanyan Olama, Mohammed Djouadi, Seddik Fathy, Aly Kuruganti, Teja GP IEEE TI Stochastic UWB Wireless Channel Modeling and Estimation from Received Signal Measurements SO RWS: 2009 IEEE RADIO AND WIRELESS SYMPOSIUM SE IEEE Radio and Wireless Symposium LA English DT Proceedings Paper CT IEEE Radio and Wireless Symposium CY JAN 18-22, 2009 CL San Diego, CA SP IEEE DE UWB communications; modeling; multipath channels; stochastic differential equations ID ULTRAWIDEBAND PROPAGATION CHANNELS AB In this paper, stochastic differential equations (SDEs) are used to model ultra-wideband (UWB) indoor channels. We show that the impulse responses for time-varying wireless channels can be approximated in a mean square sense as close as desired by impulse responses that can be realized by SDEs. The Expected Maximization and Extended Kalman Filter are employed to recursively identify and estimate the channel parameters and states, respectively, from online received signal measurement data. The state variables represent the inphase and quadrature components of the UWB channel. Both resolvable and non-resolvable multipath received signals are considered and represented as small-scaled Nakagami fading. The proposed models together with the estimation algorithm are tested using UWB indoor measurement data and the results are presented. C1 [Li, Yanyan; Djouadi, Seddik; Fathy, Aly] Univ Tennessee, Dept EECS, Knoxville, TN 37996 USA. [Olama, Mohammed; Kuruganti, Teja] CSED, Oak Ridge National Lab, Oak Ridge, TN 37831 USA. RP Li, YY (reprint author), Univ Tennessee, Dept EECS, Knoxville, TN 37996 USA. NR 16 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2164-2958 BN 978-1-4244-2698-0 J9 IEEE RADIO WIRELESS PY 2009 BP 187 EP + PG 2 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BMY58 UT WOS:000273914400048 ER PT B AU Gombosi, TI Armstrong, TP Arridge, CS Khurana, KK Krimigis, SM Krupp, N Persoon, AM Thomsen, MF AF Gombosi, Tamas I. Armstrong, Thomas P. Arridge, Christopher S. Khurana, Krishan K. Krimigis, Stamatios M. Krupp, Norbert Persoon, Ann M. Thomsen, Michelle F. BE Dougherty, MK Esposito, LW Krimigis, SM TI Saturn's Magnetospheric Configuration SO SATURN FROM CASSINI-HUYGENS LA English DT Article; Book Chapter ID INTERPLANETARY MAGNETIC-FIELD; DAWN-DUSK ASYMMETRY; LOW-ENERGY PLASMA; SOLAR-WIND; RING CURRENT; INNER MAGNETOSPHERE; MAGNETOMETER OBSERVATIONS; KRONIAN MAGNETOSPHERE; CASSINI MAGNETOMETER; JOVIAN MAGNETOPAUSE AB This Chapter summarizes our current understanding of Saturn's magnetospheric configuration. Observations from the Cassini Prime and Equinox Missions have answered some questions and opened new ones. One of the fundamental questions of magnetospheric physics is what are the sources of the plasma that populate the magnetosphere. At Saturn, there is a rich set of possible plasma sources: the solar wind. Saturn's ionosphere, Titan, the rings, and the icy satellites. One of the most significant discoveries of the Cassini mission was Enceladus' role as a source. Saturn's magnetospheric convection pattern falls somewhere between that of Earth and Jupiter. Earth is a slow rotator with a relatively small internal mass source and its magnetosphere is primarily dominated by the solar wind. At Jupiter the solar wind only plays a minor role since Jupiter is a fast rotator with a strong surface magnetic field and a significant plasma source (Io) deep inside the magnetosphere. As a consequence, internal processes dominate the magnetosphere and solar wind interaction is only marginally important. Saturn falls somewhere between Earth and Jupiter thus Saturn's magnetosphere exhibits both solar wind and internal controls at the same time. This fact makes the Kronian magnetosphere even more fascinating and complex than the magnetospheres of Earth and Jupiter. C1 [Gombosi, Tamas I.] Univ Michigan, Dept Atmospher Ocean & Space Sci, Ctr Space Environm Modeling, Ann Arbor, MI 48109 USA. [Armstrong, Thomas P.] Fundamental Technol LLC, Lawrence, KS USA. [Arridge, Christopher S.] UCL, Mullard Space Sci Lab, London, England. [Arridge, Christopher S.] UCL, Ctr Planetary Sci, London, England. [Khurana, Krishan K.] Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA 90024 USA. [Krimigis, Stamatios M.] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD USA. [Krimigis, Stamatios M.] Acad Athens, Ctr Space Res & Technol, Athens, Greece. [Krupp, Norbert] Max Planck Inst Solar Syst Res, Katlenburg Lindau, Germany. [Persoon, Ann M.] Univ Iowa, Iowa City, IA USA. [Thomsen, Michelle F.] Los Alamos Natl Lab, Los Alamos, NM USA. RP Gombosi, TI (reprint author), Univ Michigan, Dept Atmospher Ocean & Space Sci, Ctr Space Environm Modeling, Ann Arbor, MI 48109 USA. EM tamas@umich.edu; armstrong@ftecs.com; chris.arridge@physics.org; kkhurana@igpp.ucla.edu; tom.krimigis@jhuapl.edu; krupp@mps.mpg.de; ann-persoon@uiowa.edu; mthomsen@lanl.gov RI Gombosi, Tamas/G-4238-2011 OI Gombosi, Tamas/0000-0001-9360-4951 NR 200 TC 42 Z9 43 U1 0 U2 2 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 978-1-4020-9216-9 PY 2009 BP 203 EP 255 DI 10.1007/978-1-4020-9217-6_9 D2 10.1007/978-1-4020-9217-6 PG 53 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BMO21 UT WOS:000273026000009 ER PT S AU Adams, MF Ku, SH Worley, P D'Azevedo, E Cummings, JC Chang, CS AF Adams, Mark F. Ku, Seung-Hoe Worley, Patrick D'Azevedo, Ed Cummings, Julian C. Chang, C-S BE Simon, H TI Scaling to 150K cores: recent algorithm and performance engineering developments enabling XGC1 to run at scale SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID GYROKINETIC PARTICLE SIMULATION; GEOMETRY AB Particle-in-cell (PIC) methods have proven to be effective in discretizing the Vlasov-Maxwell system of equations describing the core of toroidal burning plasmas for many decades. Recent physical understanding of the importance of edge physics for stability and transport in tokamaks has lead to development of the first fully toroidal edge PIC code - XGC1. The edge region poses special problems in meshing for PIC methods due to the lack of closed flux surfaces, which makes field-line following meshes and coordinate systems problematic. We present a solution to this problem with a semi-field line following mesh method in a cylindrical coordinate system. Additionally, modern supercomputers require highly concurrent algorithms and implementations, with all levels of the memory hierarchy being efficiently utilized to realize optimal code performance. This paper presents a mesh and particle partitioning method, suitable to our meshing strategy, for use on highly concurrent cache-based computing platforms. C1 [Adams, Mark F.] Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA. [Ku, Seung-Hoe; Chang, C-S] NYU, Courant Inst Math Sci, New York, NY 10003 USA. [Worley, Patrick; D'Azevedo, Ed] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN USA. [Cummings, Julian C.] CALTECH, Ctr Adv Comp Res, Pasadena, CA 91125 USA. RP Adams, MF (reprint author), Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA. EM mark.adams@columbia.edu; sku@cims.nyu.edu; worleyph@ornl.gov; dazevedoef@ornl.gov; cummings@cacr.caltech.edu; cschang@cims.nyu.edu FU Office of Fusion Energy Sciences and by the Office of Advanced Scientific Computing Research, both in the Office of Science, U.S. Department of Energy; DOE [DE-FC02-06ER54862]; Office of Science of the U.S. Department of Energy [DE-AC05-00OR22725] FX This research was sponsored by the Office of Fusion Energy Sciences and by the Office of Advanced Scientific Computing Research, both in the Office of Science, U.S. Department of Energy. The research of D Azevedo and Worley was performed at the Oak Ridge NationalLaboratory, which is managed by UT-Battelle, LLC under Contract No. De-AC05-00OR22725. Accordingly, the U.SGovernment retains a nonexclusive, royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for U.S. Government purposes. Mark Adams was funded under DOE grant DE-FC02-06ER54862. This research used resources (Cray XT5) of the National Center for Computational Sciences at Oak Ridge National Laboratory, which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC05-00OR22725. NR 12 TC 4 Z9 4 U1 0 U2 22 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012036 DI 10.1088/1742-6596/180/1/012036 PG 10 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700037 ER PT S AU Amundson, JF Macridin, A Spentzouris, P Stern, EG AF Amundson, J. F. Macridin, A. Spentzouris, P. Stern, E. G. BE Simon, H TI Advanced computations of multi-physics, multi-scale effects in beam dynamics SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB Current state-of-the-art beam dynamics simulations include multiple physical effects and multiple physical length and/or time scales. We present recent developments in Synergia2, an accelerator modeling framework designed for multi-physics, multi-scale simulations. We summarize recent several recent results in multi-physics beam dynamics, including simulations of three Fermi lab accelerators: the Tevatron, the Main Injector and the Debuncher. C1 [Amundson, J. F.; Macridin, A.; Spentzouris, P.; Stern, E. G.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Amundson, JF (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. EM amundson@fnal.gov NR 6 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 DI 10.1088/1742-6596/180/1/012002 PG 6 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700003 ER PT S AU Apra, E Harrison, RJ Shelton, WA Tipparaju, V Vazquez-Mayagoitia, A AF Apra, E. Harrison, R. J. Shelton, W. A. Tipparaju, V. Vazquez-Mayagoitia, A. BE Simon, H TI Computational chemistry at the petascale: are we there yet? SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID COUPLED-CLUSTER; PARALLEL IMPLEMENTATION AB We have run computational chemistry calculations approaching the Petascale level of performance (similar to 0.5 PFlops). We used the Coupled Cluster CCSD(T) module of the computational chemistry code NWChem to evaluate accurate energetics of water clusters on a 1.4 PFlops Cray XT5 computer. C1 [Apra, E.; Harrison, R. J.; Shelton, W. A.; Tipparaju, V.; Vazquez-Mayagoitia, A.] Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN USA. RP Apra, E (reprint author), Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN USA. EM aprae@ornl.gov RI Apra, Edoardo/F-2135-2010; Vazquez-Mayagoitia, Alvaro/A-9755-2010 OI Apra, Edoardo/0000-0001-5955-0734; NR 16 TC 5 Z9 5 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012027 DI 10.1088/1742-6596/180/1/012027 PG 6 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700028 ER PT S AU Austin, TM Cary, JR Werner, GR Bellantoni, L AF Austin, T. M. Cary, J. R. Werner, G. R. Bellantoni, L. BE Simon, H TI Validation of Broadly Filtered Diagonalization Method for Extracting Frequencies and Modes from High-Performance Computations SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB Recent developments have shown that one can get around the difficulties of finding the eigenvalues and eigenmodes of the large systems studied with high performance computation by using broadly filtered diagonalization [G. R. Werner and J. R. Cary, J. Comp. Phys. 227, 5200 (2008)]. This method can be used in conjunction with any time-domain computation, in particular those that scale very well up to 10000s of processors and beyond. Here we present results that show that this method accurately obtains both modes and frequencies of electromagnetic cavities, even when frequencies are nearly degenerate. The application was to a well-characterized Kaon separator cavity, the A15. The computations are shown to have a precision to a few parts in 10(5). Because the computed frequency differed from the measured frequency by more than this amount, a careful validation study to determine all sources of difference was undertaken. Ultimately, more precise measurements of the cavity showed that the computations were correct, with remaining differences accounted for by uncertainties in cavity dimensions and atmospheric and thermal conditions. Thus, not only was the method validated, but it was shown to have the ability to predict differences in cavity dimensions from fabrication specifications. C1 [Austin, T. M.; Cary, J. R.] Tech X Corp, 5621 Arapahoe Ave, Boulder, CO 80303 USA. [Cary, J. R.; Werner, G. R.] Univ Colorado, Ctr Integrated Plasma Studies, Boulder, CO 80309 USA. [Bellantoni, L.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Austin, TM (reprint author), Tech X Corp, 5621 Arapahoe Ave, Boulder, CO 80303 USA. EM austin@txcorp.com FU U.S. Department of Energy [DE-FG02-04ER41317, DE-FC02-07ER41499, DE-AC02-07CH11359] FX This work was supported by the U.S. Department of Energy grants DE-FG02-04ER41317, DE-FC02-07ER41499, and DE-AC02-07CH11359. NR 7 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012003 DI 10.1088/1742-6596/180/1/012003 PG 5 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700004 ER PT S AU Batchelor, D Abla, G D'Azevedo, E Bateman, G Bernholdt, DE Berry, L Bonoli, P Bramley, R Breslau, J Chance, M Chen, J Choi, M Elwasif, W Foley, S Fu, G Harvey, R Jaeger, E Jardin, S Jenkins, T Keyes, D Klasky, S Kruger, S Ku, L Lynch, V McCune, D Ramos, J Schissel, D Schnack, D Wright, J AF Batchelor, D. Abla, G. D'Azevedo, E. Bateman, G. Bernholdt, D. E. Berry, L. Bonoli, P. Bramley, R. Breslau, J. Chance, M. Chen, J. Choi, M. Elwasif, W. Foley, S. Fu, G. Harvey, R. Jaeger, E. Jardin, S. Jenkins, T. Keyes, D. Klasky, S. Kruger, S. Ku, L. Lynch, V. McCune, D. Ramos, J. Schissel, D. Schnack, D. Wright, J. BE Simon, H TI Advances in simulation of wave interactions with extended MHD phenomena SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID TRANSPORT; TOKAMAKS AB The Integrated Plasma Simulator (IPS) provides a framework within which some of the most advanced, massively-parallel fusion modeling codes can be interoperated to provide a detailed picture of the multi-physics processes involved in fusion experiments. The presentation will cover four topics: 1) recent improvements to the IPS, 2) application of the IPS for very high resolution simulations of ITER scenarios, 3) studies of resistive and ideal MHD stability in tokamk discharges using IPS facilities, and 4) the application of RF power in the electron cyclotron range of frequencies to control slowly growing MHD modes in tokamaks and initial evaluations of optimized location for RF power deposition. C1 [Batchelor, D.; D'Azevedo, E.; Bernholdt, D. E.; Berry, L.; Elwasif, W.; Jaeger, E.; Kruger, S.; Lynch, V.] Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA. [D'Azevedo, E.] Lehigh Univ, Bethlehem, PA 18015 USA. [Ramos, J.; Wright, J.] MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA. [Bramley, R.; Foley, S.] Indiana Univ, Bloomington, IN USA. [Chen, J.; Fu, G.; Ku, L.; McCune, D.] Princeton Plasma Phys Lab, Princeton, NJ USA. [Abla, G.; Choi, M.; Schissel, D.] Gen Atom, San Diego, CA USA. [Harvey, R.] CompX Int, Dallas, TX USA. [Keyes, D.] Columbia Univ, New York, NY 10027 USA. [Kruger, S.] Tech X Corp, Boulder, CO USA. [Jenkins, T.; Schnack, D.] Univ Wisconsin, Madison, WI USA. RP Batchelor, D (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA. EM batchelordb@ornl.gov RI Lynch, Vickie/J-4647-2012 OI Lynch, Vickie/0000-0002-5836-7636 NR 17 TC 5 Z9 5 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012054 DI 10.1088/1742-6596/180/1/012054 PG 6 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700055 ER PT S AU Bethel, EW Johnson, C Ahern, S Bell, J Bremer, PT Childs, H Cormier-Michel, E Day, M Deines, E Fogal, T Garth, C Geddes, CGR Hagen, H Hamann, B Hansen, C Jacobsen, J Joy, K Kruger, J Meredith, J Messmer, P Ostrouchov, G Pascucci, V Potter, K Prabhat Pugmire, D Rubel, O Sanderson, A Silva, C Ushizima, D Weber, G Whitlock, B Wu, K AF Bethel, E. W. Johnson, C. Ahern, S. Bell, J. Bremer, P. -T. Childs, H. Cormier-Michel, E. Day, M. Deines, E. Fogal, T. Garth, C. Geddes, C. G. R. Hagen, H. Hamann, B. Hansen, C. Jacobsen, J. Joy, K. Krueger, J. Meredith, J. Messmer, P. Ostrouchov, G. Pascucci, V. Potter, K. Prabhat Pugmire, D. Ruebel, O. Sanderson, A. Silva, C. Ushizima, D. Weber, G. Whitlock, B. Wu, K. BE Simon, H TI Occam's razor and petascale visual data analysis SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID NUMERICAL-SIMULATION; VISUALIZATION AB One of the central challenges facing visualization research is how to effectively enable knowledge discovery. An effective approach will likely combine application architectures that are capable of running on today's largest platforms to address the challenges posed by large data with visual data analysis techniques that help find, represent, and effectively convey scientifically interesting features and phenomena. C1 [Bethel, E. W.; Bell, J.; Childs, H.; Cormier-Michel, E.; Day, M.; Geddes, C. G. R.; Jacobsen, J.; Prabhat; Ruebel, O.; Ushizima, D.; Weber, G.; Wu, K.] Lawrence Berkeley Natl Lab, Berkeley, CA USA. [Johnson, C.; Fogal, T.; Hansen, C.; Krueger, J.; Pascucci, V.; Potter, K.; Sanderson, A.; Silva, C.] Univ Utah, Salt Lake Cty, UT USA. [Ahern, S.; Meredith, J.; Ostrouchov, G.; Pugmire, D.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Deines, E.; Garth, C.; Hamann, B.; Weber, G.] Univ Calif, Davis, CA USA. [Bremer, P. -T.; Whitlock, B.] Lawrence Livermore Natl Lab, Livermore, CA USA. [Messmer, P.] Tech X Corp, Boulder, CO USA. [Hagen, H.] Tech Univ Kaiserslautern, Kaiserslautern, Germany. RP Bethel, EW (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA USA. EM ewbethel@lbl.gov OI Weber, Gunther/0000-0002-1794-1398 FU Office of Science, Office and Advanced Scientic Computing Research, of the U.S. Department of Energy [DE-AC02- 05CH11231]; Office of Science of the U.S. Department of Energy [DE- AC02-05CH11231] FX This work was supported by the Director, Office of Science, Office and Advanced Scientic Computing Research, of the U.S. Department of Energy under Contract No. DE-AC02- 05CH11231 through the Scientic Discovery through Advanced Computing (SciDAC) program's Visualization and Analytics Center for Enabling Technologies (VACET). This research used resources of the National Energy Research Scientic Computing Center (NERSC), which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE- AC02-05CH11231. NR 52 TC 0 Z9 0 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012084 DI 10.1088/1742-6596/180/1/012084 PG 18 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700085 ER PT S AU Boman, EG Catalyurek, UV Chevalier, C Devine, KD Safro, I Wolf, MM AF Boman, Erik G. Catalyurek, Umit V. Chevalier, Cedric Devine, Karen D. Safro, Ilya Wolf, Michael M. BE Simon, H TI Advances in parallel partitioning, load balancing and matrix ordering for scientific computing SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB We summarize recent advances in partitioning, load balancing, and matrix ordering for scientific computing performed by members of the CSCAPES SciDAC institute. C1 [Boman, Erik G.; Chevalier, Cedric; Devine, Karen D.] Sandia Natl Labs, Scalable Algorithms Dept, Livermore, CA 94550 USA. [Catalyurek, Umit V.] Ohio State Univ, Dept Biomed Informat, Columbus, OH 43210 USA. [Catalyurek, Umit V.] Ohio State Univ, Dept Elect & Comp Engn, Columbus, OH 43210 USA. [Safro, Ilya] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. [Wolf, Michael M.] Univ Illinois, Dept Comp Sci, Champaign, IL USA. RP Boman, EG (reprint author), Sandia Natl Labs, Scalable Algorithms Dept, Livermore, CA 94550 USA. RI Safro, Ilya/D-9383-2012; OI Catalyurek, Umit/0000-0002-5625-3758 FU U. S. Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000]; U.S. Department of Energy's Office of Science through the SciDAC program FX Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the U. S. Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000. The CSCAPES Institute is supported by the U.S. Department of Energy's Office of Science through the SciDAC program. NR 16 TC 1 Z9 1 U1 0 U2 8 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012008 DI 10.1088/1742-6596/180/1/012008 PG 5 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700009 ER PT S AU Bowers, KJ Albright, BJ Yin, L Daughton, W Roytershteyn, V Bergen, B Kwan, TJT AF Bowers, K. J. Albright, B. J. Yin, L. Daughton, W. Roytershteyn, V. Bergen, B. Kwan, T. J. T. BE Simon, H TI Advances in petascale kinetic plasma simulation with VPIC and Roadrunner SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID PARTICLE-IN-CELL; ION-ACCELERATION; HOT-SPOTS; LASER; TARGETS; DRIVEN; BEAMS; MODEL AB VPIC [1], a first-principles 3d electromagnetic charge-conserving relativistic kinetic particle-in-cell code, was recently adapted to run on Los Alamos's Roadrunner [2], the first supercomputer to break a petaflop (10(15) floating point operations per second) in the TOP500 supercomputer performance rankings. [3] We summarize VPIC's modeling capabilities, VPIC's optimization techniques and Roadrunner's computational characteristics. We then discuss three applications enabled by VPIC's unprecedented performance on Roadrunner: modeling laser plasma interaction in upcoming inertial confinement fusion experiments at the National Ignition Facility, modeling short-pulse laser GeV ion acceleration and modeling reconnection in space and laboratory plasmas. C1 [Bowers, K. J.; Albright, B. J.; Yin, L.; Daughton, W.; Kwan, T. J. T.] Los Alamos Natl Lab, Div Appl Phys, Plasma Theory & Applicat Grp X 1 PTA, POB 1663, Los Alamos, NM 87545 USA. [Roytershteyn, V.] Appl Math & Plasma Phys Grp, Theoret Div, Los Alamos, NM 87545 USA. [Bergen, B.] Computat Phys & Methods Grp, Comp Computat & Stat Sci Div, Los Alamos, NM 87545 USA. RP Bowers, KJ (reprint author), Los Alamos Natl Lab, Div Appl Phys, Plasma Theory & Applicat Grp X 1 PTA, POB 1663, Los Alamos, NM 87545 USA. EM kevin.j.bowers@gmail.com RI Daughton, William/L-9661-2013; OI Albright, Brian/0000-0002-7789-6525; Yin, Lin/0000-0002-8978-5320; Roytershteyn, Vadim/0000-0003-1745-7587 FU United States Department of Energy by the Los Alamos National Security LLC Los Alamos National Laboratory [DE-AC52-06NA25396]; Laboratory Directed Research and Development (LDRD) Program FX This work was performed under the auspices of the United States Department of Energy by the Los Alamos National Security LLC Los Alamos National Laboratory under Contract No. DE-AC52-06NA25396. Work supported in part by the Laboratory Directed Research and Development (LDRD) Program. NR 40 TC 41 Z9 41 U1 0 U2 7 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012055 DI 10.1088/1742-6596/180/1/012055 PG 10 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700056 ER PT S AU Bruenn, SW Mezzacappa, A Hix, WR Blondin, JM Marronetti, P Messer, OEB Dirk, CJ Yoshida, S AF Bruenn, S. W. Mezzacappa, A. Hix, W. R. Blondin, J. M. Marronetti, P. Messer, O. E. B. Dirk, C. J. Yoshida, S. BE Simon, H TI 2D and 3D core-collapse supernovae simulation results obtained with the CHIMERA code SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID BOLTZMANN NEUTRINO TRANSPORT; DRIVEN EXPLOSIONS; STAR; NUCLEOSYNTHESIS; DIMENSIONS; EVOLUTION; SHOCKS AB Much progress in realistic modeling of core-collapse supernovae has occurred recently through the availability of multi-teraflop machines and the increasing sophistication of supernova codes. These improvements are enabling simulations with enough realism that the explosion mechanism, long a mystery, may soon be delineated. We briefly describe the CHIMERA code, a supernova code we have developed to simulate core-collapse supernovae in 1, 2, and 3 spatial dimensions. We then describe the results of an ongoing suite of 2D simulations initiated from a 12, 15, 20, and 25 M-circle dot progenitor. These have all exhibited explosions and are currently in the expanding phase with the shock at between 5,000 and 20,000 km. We also briefly describe an ongoing simulation in 3 spatial dimensions initiated from the 15 M-circle dot progenitor. C1 [Bruenn, S. W.; Marronetti, P.; Dirk, C. J.] Florida Atlantic Univ, Dept Phys, 777 W Glades Rd, Boca Raton, FL 33431 USA. [Blondin, J. M.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. [Blondin, J. M.] North Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA. [Messer, O. E. B.] Oak Ridge Natl Lab, Ctr Computat Sci, Oak Ridge, TN 37831 USA. [Yoshida, S.] Albert Einstein Inst, Max Planck Inst Gravitationsphys, Golm e, Germany. RP Bruenn, SW (reprint author), Florida Atlantic Univ, Dept Phys, 777 W Glades Rd, Boca Raton, FL 33431 USA. EM bruenn@fau.edu RI Hix, William/E-7896-2011; Messer, Bronson/G-1848-2012; Mezzacappa, Anthony/B-3163-2017 OI Hix, William/0000-0002-9481-9126; Messer, Bronson/0000-0002-5358-5415; Mezzacappa, Anthony/0000-0001-9816-9741 FU U.S. Department of Energy [DEAC05-00OR22725]; TACC Ranger [TG-MCA08X010]; NASA [07-ATFP07-0011]; [NSF-OCI-0749204] FX The authors would like to acknowledge partial funded by the U.S. Department of Energy under Contract No. DEAC05-00OR22725 at Oak Ridge National Laboratory, the resources of the National Center for Computational Sciences at Oak Ridge National Laboratory, and a TACC Ranger (TG-MCA08X010) computational award. S. W. B., P. M. and O. B. E. M. acknowledge partial support from an NSF-OCI-0749204 award, S. W. B., P. M., O. B. E. M., W. R. H., and A. M. acknowledge partial support from NASA award (07-ATFP07-0011). A.M., W.R.H., and O.E.B.M. are supported at the Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U.S. Department of Energy under contract DE-AC05-00OR22725. NR 19 TC 34 Z9 35 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012018 DI 10.1088/1742-6596/180/1/012018 PG 5 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700019 ER PT S AU Bulava, J Cohen, S Dudek, J Edwards, R Engelson, E Foley, J Joo, B Juge, J Lin, HW Mathur, N Morningstar, C Peardon, M Richards, D Ryan, S Thomas, C Thomas, A Wallace, S AF Bulava, John Cohen, Saul Dudek, Jozef Edwards, Robert Engelson, Eric Foley, Justin Joo, Balint Juge, Jimmy Lin, Huey-Wen Mathur, Nilmani Morningstar, Colin Peardon, Mike Richards, David Ryan, Sinead Thomas, Christopher Thomas, Anthony Wallace, Stephen CA Hadron Spectrum Collaboration BE Simon, H TI Exploring the spectrum of QCD using the lattice SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB The calculation of the spectrum of QCD is key to an understanding of the strong interactions, and vital if we are to capitalize on the experimental study of the spectrum. In this paper, we describe progress towards understanding the spectrum of resonances of both mesons and baryons from lattice QCD, focusing in particular on the resonances of the I = 1/2 nucleon states, and of charmonium mesons composed of the heavy charmed quarks. C1 [Bulava, John; Foley, Justin; Morningstar, Colin] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA. [Cohen, Saul; Dudek, Jozef; Edwards, Robert; Joo, Balint; Lin, Huey-Wen; Richards, David; Thomas, Christopher; Thomas, Anthony] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. [Engelson, Eric; Wallace, Stephen] Univ Maryland, Dept Phys, College Pk, MD 20742 USA. [Juge, Jimmy] Univ Pacific, Dept Phys, Stockton, CA 95211 USA. [Mathur, Nilmani] Tata Inst Fundamental Res, Dept Phys Theor, Bombay 400005, Maharashtra, India. [Peardon, Mike; Ryan, Sinead] Trinity Coll Dublin, Sch Math, Dublin, Ireland. RP Bulava, J (reprint author), Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA. EM tdgr@jlab.org RI Morningstar, Colin/N-6925-2014; OI Morningstar, Colin/0000-0002-0607-9923; Cohen, Saul/0000-0001-6804-3320; Peardon, Michael/0000-0002-4199-6284; Thomas, Anthony/0000-0003-0026-499X; Bulava, John/0000-0001-9447-8459 FU Office of Science of the Department of Energy [DE-AC05-00OR22725]; National Science Foundation through TeraGrid resources; Texas Advanced Computing Center (TACC) , and under the USQCD [SciDAC-2]; Science Foundation Ireland [07/RFP/PHYF168, 06/RFP/PHY061]; National Science Foundation [NSF-PHY-0653315, NSF-PHY-0510020]; KJJ [NSF-PHY-0704171]; US DOE [DE-AC05-06OR23177] FX This research used resources of the National Center for Computational Sciences at Oak Ridge National Laboratory, which is supported by the Office of Science of the Department of Energy under Contract DE-AC05-00OR22725. This research was supported in part by the National Science Foundation through TeraGrid resources provided by Pittsburgh Supercomputing Center (PSC), San Diego Supercomputing Center (SDSC) and the Texas Advanced Computing Center (TACC), and under the USQCD SciDAC-2 Grant. This work used cluster resources at Jeaeerson Laboratory provided under the auspicies of the USQCD Collaboration.; MP and SR are supported by Science Foundation Ireland under research grants 07/RFP/PHYF168 and 06/RFP/PHY061, respectively. JB, JF and CM are supported by National Science Foundation grant numbers NSF-PHY-0653315 and NSF-PHY-0510020. KJJ is supported by grant number NSF-PHY-0704171. Authored by Jeaeerson Science Associates, LLC under US DOE Contract No. DE-AC05-06OR23177. The U.S. Government retains a non- exclusive, paid-up, irrevocable, world-wide license to publish or reproduce this manuscript for U.S. Government purposes. NR 11 TC 2 Z9 2 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012067 DI 10.1088/1742-6596/180/1/012067 PG 5 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700068 ER PT S AU Bylaska, EJ Glass, K Baxter, D Baden, SB Weare, JH AF Bylaska, Eric J. Glass, Kevin Baxter, Doug Baden, Scott B. Weare, John H. BE Simon, H TI Hard scaling challenges for ab initio molecular dynamics capabilities in NWChem: Using 100,000 CPUs per second SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID TOTAL-ENERGY CALCULATIONS; CAR-PARRINELLO METHOD; PARALLEL IMPLEMENTATION; NUCLEAR-FUEL; SEMICONDUCTORS; DECOMPOSITION; MINERALOGY; SYSTEMS; WASTE; DFT AB An overview of the parallel algorithms for ab initio molecular dynamics (AIMD) used in the NWChem program package is presented, including recent developments for computing exact exchange. These algorithms make use of a two-dimensional processor geometry proposed by Gygi et al. for use in AIMD algorithms. Using this strategy, a highly scalable algorithm for exact exchange has been developed and incorporated into AIMD. This new algorithm for exact exchange employs an incomplete butterfly to overcome the bottleneck associated with exact exchange term, and it makes judicious use of data replication. Initial testing has shown that this algorithm can scale to over 20,000 CPUs even for a modest size simulation. C1 [Bylaska, Eric J.; Glass, Kevin; Baxter, Doug] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99354 USA. RP Bylaska, EJ (reprint author), Pacific NW Natl Lab, Environm Mol Sci Lab, POB 999, Richland, WA 99354 USA. EM Eric.Bylaska@pnl.gov NR 39 TC 5 Z9 5 U1 2 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012028 DI 10.1088/1742-6596/180/1/012028 PG 11 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700029 ER PT S AU Cary, JR Candy, J Cobb, J Cohen, RH Epperly, T Estep, DJ Krasheninnikov, S Malony, AD McCune, DC McInnes, L Pankin, A Balay, S Carlsson, JA Fahey, MR Groebner, RJ Hakim, AH Kruger, SE Miah, M Pletzer, A Shasharina, S Vadlamani, S Wade-Stein, D Rognlien, TD Morris, A Shende, S Hammett, GW Indireshkumar, K Pigarov, AY Zhang, H AF Cary, J. R. Candy, J. Cobb, J. Cohen, R. H. Epperly, T. Estep, D. J. Krasheninnikov, S. Malony, A. D. McCune, D. C. McInnes, L. Pankin, A. Balay, S. Carlsson, J. A. Fahey, M. R. Groebner, R. J. Hakim, A. H. Kruger, S. E. Miah, M. Pletzer, A. Shasharina, S. Vadlamani, S. Wade-Stein, D. Rognlien, T. D. Morris, A. Shende, S. Hammett, G. W. Indireshkumar, K. Pigarov, A. Yu Zhang, H. BE Simon, H TI Concurrent, Parallel, Multiphysics Coupling in the FACETS Project SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB FACETS (Framework Application for Core-Edge Transport Simulations), is now in its third year. The FACETS team has developed a framework for concurrent coupling of parallel computational physics for use on Leadership Class Facilities (LCFs). In the course of the last year, FACETS has tackled many of the difficult problems of moving to parallel, integrated modeling by developing algorithms for coupled systems, extracting legacy applications as components, modifying them to run on LCFs, and improving the performance of all components. The development of FACETS abides by rigorous engineering standards, including cross platform build and test systems, with the latter covering regression, performance, and visualization. In addition, FACETS has demonstrated the ability to incorporate full turbulence computations for the highest fidelity transport computations. Early indications are that the framework, using such computations, scales to multiple tens of thousands of processors. These accomplishments were a result of an interdisciplinary collaboration among computational physics, computer scientists and applied mathematicians on the team. C1 [Cary, J. R.; Carlsson, J. A.; Hakim, A. H.; Kruger, S. E.; Miah, M.; Pletzer, A.; Shasharina, S.; Vadlamani, S.; Wade-Stein, D.] Tech X Corp, 5621 Arapahoe Ave,Suite A, Boulder, CO 80303 USA. [Candy, J.; Groebner, R. J.] Gen Atom, San Diego, CA USA. [Cobb, J.; Fahey, M. R.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Cohen, R. H.; Epperly, T.; Rognlien, T. D.] Lawrence Livermore Natl Lab, Lawrence, KS USA. [Estep, D. J.] Colorado State Univ, Colorado Springs, CO USA. [Krasheninnikov, S.; Pigarov, A. Yu] Univ Calif San Diego, La Jolla, CA 92093 USA. [Malony, A. D.; Morris, A.; Shende, S.; Indireshkumar, K.] ParaTools Inc, Eugene, OR USA. [McCune, D. C.; Hammett, G. W.] Princeton Plasma Phys Lab, Princeton, NJ USA. [McInnes, L.; Balay, S.; Zhang, H.] Argonne Natl Lab, Argonne, IL 60439 USA. [Pankin, A.] Lehigh Univ, Bethlehem, PA USA. RP Cary, JR (reprint author), Tech X Corp, 5621 Arapahoe Ave,Suite A, Boulder, CO 80303 USA. EM cary@txcorp.com OI Carlsson, Johan/0000-0003-4614-8150 FU U.S. Department of Energy (DOE) Oiffce of Science [DE-FC02-07ER54907, DE-AC02-06CH11357, DE- FC02-07ER54909, DE-AC52-07NA27344, DE-AC05-00OR22725, FC02-07ER54910, DE-AC02-76CH03073, DE-FC0207-ER54908, DE-FG0204-ER54739]; DOE Office of Science [DE-AC05-00OR22725, DE-AC02-05CH11231]; Office of Science of the U.S. Department of Energy [DE-AC02-06CH11357] FX Work supported by the U.S. Department of Energy (DOE) Oiffce of Science under grants and contracts including DE-FC02-07ER54907 at Tech-X, DE-AC02-06CH11357 at ANL, DE- FC02-07ER54909 at CSU, DE-AC52-07NA27344 at LLNL, DE-AC05-00OR22725 at ORNL, DE-FC02-07ER54910 at ParaTools, DE-AC02-76CH03073 at PPPL, DE-FC0207-ER54908 and DE-FG0204-ER54739 at UCSD. This work used the resources of the National Energy Research Scientific Computing Center, which is supported by the DOE Office of Science under Contract No. DE-AC02-05CH11231,and of the National Center for Computational Sciences at ORNL, which is supported by the DOE Office of Science under Contract No. DE-AC05-00OR22725,and of the Argonne Leadership Computing Facility at Argonne National Laboratory, which is supported by the Office of Science of the U.S. Department of Energy under contract DE-AC02-06CH11357. NR 8 TC 8 Z9 8 U1 0 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012056 DI 10.1088/1742-6596/180/1/012056 PG 7 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700057 ER PT S AU Choudhary, A Liao, WK Gao, K Nisar, A Ross, R Thakur, R Latham, R AF Choudhary, Alok Liao, Wei-keng Gao, Kui Nisar, Arifa Ross, Robert Thakur, Rajeev Latham, Robert BE Simon, H TI Scalable I/O and analytics SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB High-performance computing systems have already approached peta-scale with hundreds of thousands of processors/cores in many deployments. These systems promise a new level of predictive and knowledge discovery ability as researchers gain the capability to model dependencies between phenomena at scales not seen earlier. These applications are highly I/O and data intensive, leading scientists to observe that performing I/O and subsequent analyses are major bottlenecks in effectively utilizing peta-scale systems and a major hurdle in accelerating discoveries. Although significant progress has been made in performance, interfaces, and middleware runtime systems for I/O in the recent past, significantly more research and development needs to be carried out to scale the performance to the desired levels for systems containing tens to hundreds of thousands of cores. In this work we outline our recent achievements and current research for designing scalable I/O software and enabling data analytics in storage systems. We also enumerate key challenges for the I/O systems and discuss ongoing efforts that address these challenges. C1 [Choudhary, Alok; Liao, Wei-keng; Gao, Kui; Nisar, Arifa] Northwestern Univ, Dept Elect Engn & Comp Sci, Evanston, IL 60208 USA. [Ross, Robert; Thakur, Rajeev; Latham, Robert] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. RP Choudhary, A (reprint author), Northwestern Univ, Dept Elect Engn & Comp Sci, Evanston, IL 60208 USA. EM choudhar@eecs.northwestern.edu; wkliao@eecs.northwestern.edu; kgao@eecs.northwestern.edu; ani662@eecs.northwestern.edu; rross@mcs.anl.gov; thakur@mcs.anl.gov; robl@mcs.anl.gov RI Choudhary, Alok/C-5486-2009 FU U.S. Department of Energy (DOE) SCIDAC-2; Scientific Data Management Center for Enabling Technologies [DE-FC02-07ER25808]; DOE FASTOS [DE-FG02-08ER25848]; DOE Office of Advanced Scientific Computing Research, Office of Science [DE-AC02-06CH11357, DE-FG02-08ER25835]; National Science Foundation (NSF) under HECURA [CCF-0621443, SDCI OCI-0724599]; NSF ST-HEC [CCF-0444405]; NSF through TeraGrid resources provided by NCSA [TG-CCR060017T, TG-CCR080019T, TGASC080050N]; Office of Science of DOE [DE-AC05-00OR22725] FX This work was supported in part by U.S. Department of Energy (DOE) SCIDAC-2: Scientific Data Management Center for Enabling Technologies grant DE-FC02-07ER25808, DOE FASTOS award number DE-FG02-08ER25848, the DOE Office of Advanced Scientific Computing Research, Office of Science, under contract DE-AC02-06CH11357 and DE-FG02-08ER25835. This work was also supported in part by the National Science Foundation (NSF) under HECURA CCF-0621443, NSF SDCI OCI-0724599, and NSF ST-HEC CCF-0444405. We thank Lee Ward and Ruth Klundt at Sandia National Laboratories for providing the I/O trace data and valuable suggestions toward the application I/O characteristic analysis on HPC systems. This research was supported in part by NSF through TeraGrid resources provided by NCSA, under TeraGrid Projects TG-CCR060017T, TG-CCR080019T, and TGASC080050N. This research also used resources of the National Center for Computational Sciences at Oak Ridge National Laboratory, which is supported by the Office of Science of DOE under Contr ct No. DE-AC05-00OR22725. NR 30 TC 4 Z9 4 U1 0 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012048 DI 10.1088/1742-6596/180/1/012048 PG 10 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700049 ER PT S AU Colella, P Dorr, M Hittinger, J Martin, DF McCorquodale, P AF Colella, P. Dorr, M. Hittinger, J. Martin, D. F. McCorquodale, P. BE Simon, H TI High-order finite-volume adaptive methods on locally rectangular grids SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID PPM AB We are developing a new class of finite-volume methods on locally-refined and mapped grids, which are at least fourth-order accurate in regions where the solution is smooth. This paper discusses the implementation of such methods for time-dependent problems on both Cartesian and mapped grids with adaptive mesh refinement. We show 2D results with the Berger-Colella shock-ramp problem in Cartesian coordinates, and fourth-order accuracy of the solution of a Gaussian pulse problem in a polytropic gas in mapped coordinates. C1 [Colella, P.; Martin, D. F.; McCorquodale, P.] Lawrence Berkeley Natl Lab, Appl Numer Algorithms Grp, 1 Cyclotron Rd,Mail Stop 50A1148, Berkeley, CA 94720 USA. [Dorr, M.; Hittinger, J.] Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA 94551 USA. RP Colella, P (reprint author), Lawrence Berkeley Natl Lab, Appl Numer Algorithms Grp, 1 Cyclotron Rd,Mail Stop 50A1148, Berkeley, CA 94720 USA. EM PWMcCorquodale@lbl.gov NR 7 TC 7 Z9 7 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012010 DI 10.1088/1742-6596/180/1/012010 PG 5 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700011 ER PT S AU Day, MS Bell, JB Cheng, RK Tachibana, S Beckner, VE Lijewski, MJ AF Day, M. S. Bell, J. B. Cheng, R. K. Tachibana, S. Beckner, V. E. Lijewski, M. J. BE Simon, H TI Cellular burning in lean premixed turbulent hydrogen-air flames: coupling experimental and computational analysis at the laboratory scale SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID LARGE-EDDY SIMULATION; NUMERICAL-SIMULATION; COMBUSTION; FLOWS AB One strategy for reducing US dependence on petroleum is to develop new combustion technologies for burning the fuel-lean mixtures of hydrogen or hydrogen-rich syngas fuels obtained from the gasification of coal and biomass. Fuel-flexible combustion systems based on lean premixed combustion have the potential for dramatically reducing pollutant emissions in transportation systems, heat and stationary power generation. However, lean premixed flames are highly susceptible to fluid-dynamical combustion instabilities making robust and reliable systems difficult to design. Low swirl burners are emerging as an important technology for meeting design requirements in terms of both reliability and emissions for next generation combustion devices. In this paper, we present simulations of a lean, premixed hydrogen flame stabilized on a laboratory-scale low swirl burner. The simulations use detailed chemistry and transport without incorporating explicit models for turbulence or turbulence/chemistry interaction. Here we discuss the overall structure of the flame and compare with experimental data. We also use the simulation data to elucidate the characteristics of the turbulent flame interaction and how this impacts the analysis of experimental measurements. C1 [Day, M. S.; Bell, J. B.; Beckner, V. E.; Lijewski, M. J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Computat Sci & Engn, Berkeley, CA 94720 USA. [Cheng, R. K.; Tachibana, S.] Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. [Tachibana, S.] Japan Aerosp Explorat Agcy, Tokyo, Japan. RP Day, MS (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Computat Sci & Engn, Berkeley, CA 94720 USA. EM msday@lbl.gov OI Tachibana, Shigeru/0000-0002-0745-502X FU SciDAC Program of the DOE Office of Mathematics, Information Computational Sciences and the experimental effort; Advanced Turbine Program of the DOE Office of Fossil Energy both under under the U.S. Department of Energy [DE-AC02-05CH11231]; NERSC as part of an INCITE FX This work was supported by the SciDAC Program of the DOE Office of Mathematics, Information, and Computational Sciences and the experimental effort supported by the Advanced Turbine Program of the DOE Office of Fossil Energy both under under the U.S. Department of Energy under contract No. DE-AC02-05CH11231. The computations presented here were performed on Franklin, the XT4 at NERSC as part of an INCITE award. The authors would like to thank A. Dreizler and P. Petersson for providing experimental velocity measurements used to define the boundary conditions. NR 18 TC 6 Z9 6 U1 0 U2 8 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012031 DI 10.1088/1742-6596/180/1/012031 PG 10 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700032 ER PT S AU de Supinski, BR Alam, S Bailey, DH Carrington, L Daley, C Dubey, A Gamblin, T Gunter, D Hovland, PD Jagode, H Karavanic, K Marin, G Mellor-Crummey, J Moore, S Norris, B Oliker, L Olschanowsky, C Roth, PC Schulz, M Shende, S Snavely, A Spear, W Tikir, M Vetter, J Worley, P Wright, N AF de Supinski, Bronis R. Alam, Sadaf Bailey, David H. Carrington, Laura Daley, Chris Dubey, Anshu Gamblin, Todd Gunter, Dan Hovland, Paul D. Jagode, Heike Karavanic, Karen Marin, Gabriel Mellor-Crummey, John Moore, Shirley Norris, Boyana Oliker, Leonid Olschanowsky, Catherine Roth, Philip C. Schulz, Martin Shende, Sameer Snavely, Allan Spear, Wyatt Tikir, Mustafa Vetter, Jeff Worley, Pat Wright, Nicholas BE Simon, H TI Modeling the Office of Science ten year facilities plan: The PERI Architecture Tiger Team SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID PARTICLE SIMULATION AB The Performance Engineering Institute (PERI) originally proposed a tiger team activity as a mechanism to target significant effort optimizing key Office of Science applications, a model that was successfully realized with the assistance of two JOULE metric teams. However, the Office of Science requested a new focus beginning in 2008: assistance in forming its ten year facilities plan. To meet this request, PERT formed the Architecture Tiger Team, which is modeling the performance of key science applications on future architectures, with S3D, FLASH and GTC chosen as the first application targets. In this activity, we have measured the performance of these applications on current systems in order to understand their baseline performance and to ensure that our modeling activity focuses on the right versions and inputs of the applications. We have applied a variety of modeling techniques to anticipate the performance of these applications on a range of anticipated systems. While our initial findings predict that Office of Science applications will continue to perform well on future machines from major hardware vendors, we have also encountered several areas in which we must extend our modeling techniques in order to fulfill our mission accurately and completely. In addition, we anticipate that models of a wider range of applications will reveal critical differences between expected future systems, thus providing guidance for future Office of Science procurement decisions, and will enable DOE applications to exploit machines in future facilities fully. C1 [de Supinski, Bronis R.; Gamblin, Todd; Schulz, Martin] Lawrence Livermore Natl Lab, Livermore, CA USA. [Alam, Sadaf; Marin, Gabriel; Roth, Philip C.; Vetter, Jeff; Worley, Pat] Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA. [Bailey, David H.; Gunter, Dan; Oliker, Leonid] Lawrence Berkeley Natl Lab, Berkeley, CA USA. [Carrington, Laura; Olschanowsky, Catherine; Snavely, Allan; Tikir, Mustafa; Wright, Nicholas] San Diego SuperComput Ctr, San Diego, CA USA. [Daley, Chris; Dubey, Anshu] Univ Chicago, Chicago, IL 60637 USA. [Hovland, Paul D.; Norris, Boyana] Argonne Natl Lab, Argonne, IL USA. [Jagode, Heike; Moore, Shirley] Univ Tennessee, Knoxville, TN 37996 USA. [Karavanic, Karen] Portland State Univ, Portland, OR 97207 USA. [Mellor-Crummey, John] Rice Univ, Houston, TX 77251 USA. [Shende, Sameer; Spear, Wyatt] Univ Oregon, Eugene, OR 97403 USA. RP de Supinski, BR (reprint author), Lawrence Livermore Natl Lab, Livermore, CA USA. EM bronis@llnl.gov; alamsr@ornl.gov; dhbailey@lbl.gov; lcarring@sdsc.edu; cdaley@flash.uchicago.edu; a-dubey1@uchicago.edu; tgamblin@llnl.gov; dkgunter@lbl.gov; hovland@mcs.anl.gov; jagode@eecs.utk.edu; karavan@cs.pdx.edu; maring@ornl.gov; johnmc@cs.rice.edu; shirley@cs.utk.edu; norris@mcs.anl.gov; loliker@lbl.gov; cmills@sdsc.edu; rothpc@ornl.gov; schulzm@llnl.gov; sameer@cs.uoregon.edu; allans@sdsc.edu; wspear@cs.uoregon.edu; mtikir@sdsc.edu; vetter@ornl.gov; worleyph@ornl.gov; nwright@sdsc.edu FU U.S. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344, LLNL-CONF 413427]; Office of Advanced Scientific Computing Research; Office of Science, U.S. Department of Energy [DE-AC05-00OR22725]; UT-Batelle; LLC; Office of Computational and Technology Research; Division of Mathematical, Information, and Computational Sciences of the U.S. Department of Energy [DE-FC02-06ER25761]; U.S. Department of Energy by the University of Oregon [DEFG02 07ER25826, DEFG02-05ER25680]; National Center for Computational Sciences at Oak Ridge National Laboratory; Office of Science of the U.S. Department of Energy [DE AC05-00OR22725, DE-AC02-06CH11357] FX The work of de Supinski, Gamblin and Schulz was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under contract DE-AC52-07NA27344 (LLNL-CONF 413427). The work of Alam, Jagode, Roth, Vetter and Worley was sponsored by the Office of Advanced Scientific Computing Research, Office of Science, U.S. Department of Energy, under contract DE-AC05-00OR22725 with UT-Batelle, LLC. The work of Bailey, Gunter and Oliker was supported by the Director, Office of Computational and Technology Research, Division of Mathematical, Information, and Computational Sciences of the U.S. Department of Energy, under contract DE AC02 05CH11231. The work of Hovland and Norris was supported by the Office of Advanced Scientific Computing Research, Office of Science, U.S. Department of Energy, under contract DE-AC02-06CH11357. The work of Moore was supported by the U.S. Department of Energy Office of Science under contract DE-FC02-06ER25761. The work of Shende and Spear was performed under the auspices of the U.S. Department of Energy by the University of Oregon under contracts DEFG02 07ER25826 and DEFG02-05ER25680. Accordingly, the U.S. Government retains a nonexclusive, royalty free license to publish or reproduce the published form of this contribution, or allow others to do so, for U.S. Government purposes.; This research used resources of the National Center for Computational Sciences at Oak Ridge National Laboratory, which is supported by the Office of Science of the U.S. Department of Energy under contract DE AC05-00OR22725, and resources of the Argonne Leadership Computing Facility at Argonne National Laboratory, which is supported by the Office of Science of the U.S. Department of Energy under contract DE-AC02-06CH11357. NR 18 TC 0 Z9 0 U1 0 U2 23 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012039 DI 10.1088/1742-6596/180/1/012039 PG 10 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700040 ER PT S AU Devine, K Diachin, L Kraftcheck, J Jansen, KE Leung, V Luo, X Miller, M Ollivier-Gooch, C Ovcharenko, A Sahni, O Shephard, MS Tautges, T Xie, T Zhou, M AF Devine, K. Diachin, L. Kraftcheck, J. Jansen, K. E. Leung, V. Luo, X. Miller, M. Ollivier-Gooch, C. Ovcharenko, A. Sahni, O. Shephard, M. S. Tautges, T. Xie, T. Zhou, M. BE Simon, H TI Interoperable mesh components for large-scale, distributed-memory simulations SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB SciDAC applications have a demonstrated need for advanced software tools to manage the complexities associated with sophisticated geometry, mesh, and field manipulation tasks, particularly as computer architectures move toward the petascale. In this paper, we describe a software component - an abstract data model and programming interface designed to provide support for parallel unstructured mesh operations. We describe key issues that must be addressed to successfully provide high-performance, distributed-memory unstructured mesh services and highlight some recent research accomplishments in developing new load balancing and MPI-based communication libraries appropriate for leadership class computing. Finally, we give examples of the use of parallel adaptive mesh modification in two SciDAC applications. C1 [Devine, K.; Leung, V.] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. [Diachin, L.; Miller, M.] Lawrence Livermore Natl Lab, Livermore, CA USA. [Jansen, K. E.; Luo, X.; Ovcharenko, A.; Sahni, O.; Shephard, M. S.; Xie, T.; Zhou, M.] Rensselaer Polytech Inst, Troy, NY USA. [Kraftcheck, J.] Univ Wisconsin, Madison, WI USA. [Ollivier-Gooch, C.] Univ British Columbia, Vancouver, BC, Canada. [Tautges, T.] Argonne Natl Lab, Argonne, IL USA. RP Devine, K (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM kddevin@sandia.gov; diachin2@llnl.gov; kraftche@cae.wisc.edu; jansen@rpi.edu; vjleung@sandia.gov; xluo@scorec.rpi.edu; miller86@llnl.gov; cfog@mech.ubc.ca; shurik@scorec.rpi.edu; osahni@scorec.rpi.edu; shephard@scorec.rpi.edu; tautges@mcs.anl.gov; txie@scorec.rpi.edu; zhou@scorec.rpi.edu RI Ollivier-Gooch, Carl/E-8934-2011 OI Ollivier-Gooch, Carl/0000-0001-6514-058X FU U.S. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; Canadian Natural Sciences and Engineering Research Council under Special Research Opportunities [SRO-299160]; Rensselaer Polytechnic Institute under DOE [DE-FC02-01ER25460]; NSF PetaApps [OCI-0749152]; Sandia National Laboratory; U. S. Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000] FX This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344; the Canadian Natural Sciences and Engineering Research Council under Special Research Opportunities Grant SRO-299160; by Rensselaer Polytechnic Institute under DOE grant number DE-FC02-01ER25460 and the NSF PetaApps project OCI-0749152, and by Sandia National Laboratory; a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the U. S. Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000. Computing Resources used in this paper include the Rensselaer Computational Center for Nanotechnology Innovations (BG/L) and DOE INCITE (Intrepid - BG/P). NR 23 TC 4 Z9 4 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012011 DI 10.1088/1742-6596/180/1/012011 PG 10 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700012 ER PT S AU Di Pierro, M Clark, M Jung, CW Osborn, J Negele, J Brower, R Gottlieb, S Zhong, YQ AF Di Pierro, Massimo Clark, Michael Jung, Chulwoo Osborn, James Negele, John Brower, Richard Gottlieb, Steven Zhong, Yaoqian BE Simon, H TI Visualization as a tool for understanding QCD evolution algorithms SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB In this paper we present a project of visualizing topological charge in Lattice QCD in order to understand its evolution under the Markov Chain Monte Carlo algorithms and how to maximize its equilibration. Lattice QCD is a very computationally expensive technology for computing properties of composite particles from a few fundamental parameters such as quark masses. Our research plays an important role in validating these computations by showing that the autocorrelation length is small and it can eventually lead to even more efficient algorithms. C1 [Di Pierro, Massimo; Zhong, Yaoqian] Depaul Univ, Sch Comp, Chicago, IL 60604 USA. [Clark, Michael; Brower, Richard] Boston Univ, Dept Phys, Boston, MA 02215 USA. [Jung, Chulwoo] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. [Osborn, James] Argonne Natl Lab, Argonne, IL 60439 USA. [Negele, John] MIT, Ctr Phys Theor, Cambridge, MA 02139 USA. [Gottlieb, Steven] Indiana Univ, Bloomington, IN 47405 USA. RP Di Pierro, M (reprint author), Depaul Univ, Sch Comp, Chicago, IL 60604 USA. FU Department of Energy [DE-FC02-06ER41441] FX This research is funded by the Department of Energy grant DE-FC02-06ER41441. We thank Argonne National Laboratory computing resources, the DOE Advanced Simulation and Computing Initiative (ASCI) for the VisIt software, and Brian Fox at DePaul Univ. NR 5 TC 0 Z9 0 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012068 DI 10.1088/1742-6596/180/1/012068 PG 5 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700069 ER PT S AU Edwards, RG AF Edwards, Robert G. CA USQCD Collaboration BE Simon, H TI Nuclear physics using Lattice QCD in the SciDAC era SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB Lattice QCD currently provides our only means of solving QCD (Quantum Chromo Dynamics) - the theory of the strong nuclear force - in the low-energy regime, and thus of crucial importance for theoretical and experimental research programs in High Energy and Nuclear Physics. Under the SciDAC program, a software infrastructure has been developed for lattice QCD that effectively utilize the capabilities of the INCITE facilities. These developments have enabled a new generation of Nuclear Physics calculations investigating the spectrum and structure of matter, such as the origin of mass and spin. This software infrastructure is described and recent results are reviewed. C1 [Edwards, Robert G.; USQCD Collaboration] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. RP Edwards, RG (reprint author), Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. EM edwards@jlab.org NR 14 TC 0 Z9 0 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR 012069 DI 10.1088/1742-6596/180/1/012069 PG 10 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700070 ER PT S AU Fann, GI Pei, J Harrison, RJ Jia, J Hill, J Ou, M Nazarewicz, W Shelton, WA Schunck, N AF Fann, G. I. Pei, J. Harrison, R. J. Jia, J. Hill, J. Ou, M. Nazarewicz, W. Shelton, W. A. Schunck, N. BE Simon, H TI Fast multiresolution methods for density functional theory in nuclear physics SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID MULTIWAVELET BASES; QUANTUM-CHEMISTRY; SINGULAR-OPERATORS AB We describe a fast real-analysis based O(N) algorithm based on multiresolution analysis and low separation rank approximation of functions and operators for solving the Schrodinger and Lippman-Schwinger equations in 3-D with spin-orbit potential to high precision for bound states. Each of the operators and wavefunctions has its own structure of refinement to achieve and guarantee the desired finite precision. To our knowledge, this is the first time such adaptive methods have been used in computational physics, even in 1-D. Accurate solutions for each of the wavefunctions are obtained for a sample test problem. Spin orbit potentials commonly occur in the simulations of semiconductors, quantum chemistry, molecular electronics and nuclear physics. We compare our results with those obtained by direct diagonalization using the Hermite basis and the spline basis with an example from nuclear structure theory. C1 [Fann, G. I.; Harrison, R. J.; Jia, J.; Hill, J.; Shelton, W. A.] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37830 USA. [Ou, M.] UT Joint Inst Computat Sci, Oak Ridge, TN 37831 USA. [Harrison, R. J.] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. [Pei, J.; Nazarewicz, W.; Schunck, N.] Univ Tennessee, Dept Phys, Knoxville, TN 37996 USA. [Pei, J.; Nazarewicz, W.; Schunck, N.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RP Fann, GI (reprint author), Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37830 USA. EM fanngi@ornl.gov RI Pei, Junchen/E-3532-2010; OI Schunck, Nicolas/0000-0002-9203-6849 FU Scientic Discovery through Advanced Computing (SciDAC) program of the U.S. Department of Energy, Office of Science, the Division of Basic Energy Sciences; Office of Advanced Scientic Computing Research, Program in Applied Mathematics and through the SciDAC Scientic Application Pilot Program [DE-AC05-00OR22725]; UT-Battelle, LLC (Oak Ridge National Laboratory); (University of Tennessee) [DE-FG02-96ER40963]; (Joint Institute for Heavy Ion Research) [DE-FG05- 87ER40361]; UNEDF SciDAC Collaboration [DE-FC02-07ER41457] FX This work was supported by the Scientic Discovery through Advanced Computing (SciDAC) program of the U.S. Department of Energy, Office of Science, the Division of Basic Energy Sciences, and the Office of Advanced Scientic Computing Research, Program in Applied Mathematics and through the SciDAC Scientic Application Pilot Program under contract number DE-AC05-00OR22725 with UT-Battelle, LLC (Oak Ridge National Laboratory). It is also supported under contracts DE-FG02-96ER40963 (University of Tennessee), DE-FG05- 87ER40361 (Joint Institute for Heavy Ion Research), and DE-FC02-07ER41457 with UNEDF SciDAC Collaboration. Computational resources were provided by the National Center for Computational Sciences at Oak Ridge and the National Energy Research Scientic Computing Facility. NR 10 TC 10 Z9 10 U1 0 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012080 DI 10.1088/1742-6596/180/1/012080 PG 6 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700081 ER PT S AU Fowler, R Adhianto, L de Supinski, B Fagan, M Gamblin, T Krentel, M Mellor-Crummey, J Schulz, M Tallent, N AF Fowler, R. Adhianto, L. de Supinski, B. Fagan, M. Gamblin, T. Krentel, M. Mellor-Crummey, J. Schulz, M. Tallent, N. BE Simon, H TI Frontiers of performance analysis on leadership-class systems SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB The number of cores in high-end systems for scientific computing are employingis increasing rapidly. As a result, there is an pressing need for tools that can measure, model, and diagnose performance problems in highly-parallel runs. We describe two tools that employ complementary approaches for analysis at scale and we illustrate their use on DOE leadership-class systems. C1 [Fowler, R.] Univ N Carolina, Renaissance Comp Inst, Chapel Hill, NC 27515 USA. [Adhianto, L.; Fagan, M.; Krentel, M.; Mellor-Crummey, J.; Tallent, N.] Rice Univ, Houston, TX 77251 USA. [de Supinski, B.; Gamblin, T.; Schulz, M.] Lawrence Livermore Natl Lab, Lawrence, KS USA. RP Fowler, R (reprint author), Univ N Carolina, Renaissance Comp Inst, Chapel Hill, NC 27515 USA. EM rjf@renci.org; laksono@cs.rice.edu; bronis@llnl.gov; mfagan@cs.rice.edu; tgamblin@llnl.gov; krentel@cs.rice.edu; johnmc@cs.rice.edu; schulzm@llnl.gov; tallent@cs.rice.edu FU DOE SciDAC program [DE-FC02-06ER25764, DE-FC02-06ER41445, DE-FC02-07ER25800, DE-FC02-06ER25762]; DOE ffice of Science [DEAC02- 06CH11357] FX This work was supported by the DOE SciDAC program under cooperative agreement numbers DE-FC02-06ER25764, DE-FC02-06ER41445, DE-FC02-07ER25800, and DE-FC02-06ER25762. This research used resources of the Argonne Leadership Computing Facility at Argonne National Laboratory, which is supported by the DOE ffice of Science under contract DEAC02- 06CH11357.O NR 9 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012041 DI 10.1088/1742-6596/180/1/012041 PG 6 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700042 ER PT S AU Gaston, D Hansen, G Kadioglu, S Knoll, DA Newman, C Park, H Permann, C Taitano, W AF Gaston, D. Hansen, G. Kadioglu, S. Knoll, D. A. Newman, C. Park, H. Permann, C. Taitano, W. BE Simon, H TI Parallel multiphysics algorithms and software for computational nuclear engineering SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID SYSTEMS AB There is a growing trend in nuclear reactor simulation to consider multiphysics problems. This can be seen in reactor analysis where analysts are interested in coupled flow, heat transfer and neutronics, and in fuel performance simulation where analysts are interested in thermomechanics with contact coupled to species transport and chemistry. These more ambitious simulations usually motivate some level of parallel computing. Many of the coupling efforts to date utilize simple code coupling or first-order operator splitting, often referred to as loose coupling. While these approaches can produce answers, they usually leave questions of accuracy and stability unanswered. Additionally, the different physics often reside on separate grids which are coupled via simple interpolation, again leaving open questions of stability and accuracy. Utilizing state of the art mathematics and software development techniques we are deploying next generation tools for nuclear engineering applications. The Jacobian-free Newton-Krylov (JFNK) method combined with physics-based preconditioning provide the underlying mathematical structure for our tools. JFNK is understood to be a modern multiphysics algorithm, but we are also utilizing its unique properties as a scale bridging algorithm. To facilitate rapid development of multiphysics applications we have developed the Multiphysics Object-Oriented Simulation Environment (MOOSE). Examples from two MOOSE-based applications: PRONGHORN, our multiphysics gas cooled reactor simulation tool and BISON, our multiphysics, multiscale fuel performance simulation tool will be presented. C1 [Gaston, D.; Hansen, G.; Kadioglu, S.; Knoll, D. A.; Newman, C.; Park, H.; Permann, C.; Taitano, W.] Idaho Natl Lab, Multiphys Methods Grp, Idaho Falls, ID 83415 USA. RP Gaston, D (reprint author), Idaho Natl Lab, Multiphys Methods Grp, Idaho Falls, ID 83415 USA. EM dana.knoll@inl.gov OI Hansen, Glen/0000-0002-1786-9285 NR 14 TC 5 Z9 5 U1 4 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 DI 10.1088/1742-6596/180/1/012012 PG 10 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700013 ER PT S AU Green, DL Jaeger, EF Berry, LA AF Green, D. L. Jaeger, E. F. Berry, L. A. CA Rf-SciDAC Team BE Simon, H TI Exploration of finite ion orbit effects in the ion cyclotron range of frequencies SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID HEATED PLASMAS; ABSORPTION; TOKAMAK; SIMULATION; TRANSPORT; WAVE AB The rf-SciDAC collaboration is developing computer simulations to predict the damping of radio frequency (rf) waves in fusion plasmas. Here we extend self-consistent quasi-linear calculations of ion cyclotron resonant heating to include the finite drift of ions from magnetic flux surfaces and rf induced spatial transport. The all-orders spectral wave solver AORSA is iteratively coupled with a particle based update of the plasma distribution function. C1 [Green, D. L.; Jaeger, E. F.; Berry, L. A.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Green, DL (reprint author), Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA. EM greendl1@ornl.gov NR 22 TC 2 Z9 2 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012058 DI 10.1088/1742-6596/180/1/012058 PG 5 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700059 ER PT S AU Habib, S Pope, A Lukic, Z Daniel, D Fasel, P Desai, N Heitmann, K Hsu, CH Ankeny, L Mark, G Bhattacharya, S Ahrens, J AF Habib, Salman Pope, Adrian Lukic, Zarija Daniel, David Fasel, Patricia Desai, Nehal Heitmann, Katrin Hsu, Chung-Hsing Ankeny, Lee Mark, Graham Bhattacharya, Suman Ahrens, James BE Simon, H TI Hybrid petacomputing meets cosmology: the Roadrunner Universe project SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB The target of the Roadrunner Universe project at Los Alamos National Laboratory is a set of very large cosmological N-body simulation runs on the hybrid supercomputer Roadrunner, the world's first petaflop platform. Roadrunner's architecture presents opportunities and difficulties characteristic of next-generation supercomputing. We describe a new code designed to optimize performance and scalability by explicitly matching the underlying algorithms to the machine architecture, and by using the physics of the problem as an essential aid in this process. While applications will differ in specific exploits, we believe that such a design process will become increasingly important in the future. The Roadrunner Universe project code, MC(3) (Mesh-based Cosmology Code on the Cell), uses grid and direct particle methods to balance the capabilities of Roadrunner's conventional (Opteron) and accelerator (Cell BE) layers. Mirrored particle caches and spectral techniques are used to overcome communication bandwidth limitations and possible difficulties with complicated particle-grid interaction templates. C1 [Habib, Salman; Pope, Adrian; Lukic, Zarija; Daniel, David; Fasel, Patricia; Desai, Nehal; Heitmann, Katrin; Hsu, Chung-Hsing; Ankeny, Lee; Mark, Graham; Bhattacharya, Suman; Ahrens, James] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Habib, S (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM habib@lanl.gov NR 9 TC 28 Z9 28 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 DI 10.1088/1742-6596/180/1/012019 PG 10 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700020 ER PT S AU Hendrickson, B AF Hendrickson, Bruce BE Simon, H TI Computational Science: Emerging Opportunities and Challenges SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB In the past two decades, computational methods have emerged as an essential component of the scientific and engineering enterprise. A diverse assortment of scientific applications has been simulated and explored via advanced computational techniques. Computer vendors have built enormous parallel machines to support these activities, and the research community has developed new algorithms and codes, and agreed on standards to facilitate ever more ambitious computations. However, this track record of success will be increasingly hard to sustain in coming years. Power limitations constrain processor clock speeds, so further performance improvements will need to come from ever more parallelism. This higher degree of parallelism will require new thinking about algorithms, programming models, and architectural resilience. Simultaneously, cutting edge science increasingly requires more complex simulations with unstructured and adaptive grids, and multi-scale and multi-physics phenomena. These new codes will push existing parallelization strategies to their limits and beyond. Emerging data-rich scientific applications are also in need of high performance computing, but their complex spatial and temporal data access patterns do not perform well on existing machines. These interacting forces will reshape high performance computing in the coming years. C1 Univ New Mexico, Affiliated Fac Comp Sci, Sandia Natl Labs, Albuquerque, NM 87131 USA. RP Hendrickson, B (reprint author), Univ New Mexico, Affiliated Fac Comp Sci, Sandia Natl Labs, Albuquerque, NM 87131 USA. EM bah@sandia.gov NR 17 TC 5 Z9 5 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR 012013 DI 10.1088/1742-6596/180/1/012013 PG 8 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700014 ER PT S AU Henry, CS Xia, FF Stevens, R AF Henry, Christopher S. Xia, Fangfang Stevens, Rick BE Simon, H TI Application of high-performance computing to the reconstruction, analysis, and optimization of genome-scale metabolic models SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID ESCHERICHIA-COLI; BACILLUS-SUBTILIS; CAPABILITIES; NETWORKS; CONSTRAINTS; FRAMEWORK; GROWTH AB Over the past decade, genome-scale metabolic models have gained widespread acceptance in biology and bioengineering as a means of quantitatively predicting organism behavior based on the stoichiometry of the biochemical reactions constituting the organism metabolism. The list of applications for these models is rapidly growing; they have been used to identify essential genes, determine growth conditions, predict phenotypes, predict response to mutation, and study the impact of transcriptional regulation on organism phenotypes. This growing field of applications, combined with the rapidly growing number of available genome-scale models, is producing a significant demand for computation to analyze these models. Here we discuss how high-performance computing may be applied with various algorithms for the reconstruction, analysis, and optimization of genome-scale metabolic models. We also performed a case study to demonstrate how the algorithm for simulating gene knockouts scales when run on up to 65,536 processors on Blue Gene/P. In this case study, the knockout of every possible combination of one, two, three, and four genes was simulated in the iBsul 103 genome-scale model of B. subtilis. In 162 minutes, 18,243,776,054 knockouts were simulated on 65,536 processors, revealing 288 essential single knockouts, 78 essential double knockouts, 99 essential triple knockouts, and only 28 essential quadruple knockouts. C1 [Henry, Christopher S.; Stevens, Rick] Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. [Xia, Fangfang; Stevens, Rick] Univ Chicago, Dept Comp Sci, Chicago, IL 60637 USA. RP Henry, CS (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. EM chenry@mcs.anl.gov FU U.S. Department of Energy [DE-ACO2-6CH11357] FX This work was supported in part by the U.S. Department of Energy under contract DE-ACO2-6CH11357. We thank the Argonne Leadership Computing Facility and INCITE program for compute time spent on Blue Gene/P. We thank the SEED development team for advice and assistance in using the SEED annotation system. NR 28 TC 4 Z9 4 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012025 DI 10.1088/1742-6596/180/1/012025 PG 11 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700026 ER PT S AU Hereld, M Hudson, R Norris, J Papka, ME Uram, T AF Hereld, Mark Hudson, Randy Norris, John Papka, Michael E. Uram, Thomas BE Simon, H TI Enabling scientific teamwork SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB The Computer Supported Collaborative Work research community has identified that technology can be used to support distributed teams of researchers though common tools such as email, instant messaging, and conferencing environments alone are not enough. Building from a list of areas where it is believed technology can help support distributed teams we have divided our efforts into support of asynchronous and synchronous activities. This paper will describe two of our recent efforts to improve the productivity of distributed science teams. One effort focused on supporting the management and tracking of milestones and results, with the hope of helping manage information overload. The second effort is focused on providing an environment that supports real-time analysis of data. Both of these efforts are seen as add-ons to the existing collaborative infrastructure, developed to enhance the experience and remove the barrier of working at a distance. C1 [Hereld, Mark; Uram, Thomas] Argonne Natl Lab, Math & Comp Sci, Argonne, IL 60439 USA. [Hudson, Randy; Norris, John] Univ Chicago, Flash Ctr, Chicago, IL 60622 USA. RP Hereld, M (reprint author), Argonne Natl Lab, Math & Comp Sci, Argonne, IL 60439 USA. EM papka@anl.gov OI Hereld, Mark/0000-0002-0268-2880 FU DOE [DE-AC02-06CH11357]; NSF [OCI-0222509]; NLM [N01-LM-3-3508]; DOE-supported ASC / Alliance Center for Astrophysical Thermonuclear Flashes at the University of Chicago FX This work has been supported in part by the DOE, under contract DE-AC02-06CH11357, the NSF by grant OCI-0222509, NLM by contract N01-LM-3-3508 and the DOE-supported ASC / Alliance Center for Astrophysical Thermonuclear Flashes at the University of Chicago. NR 8 TC 0 Z9 0 U1 0 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012085 DI 10.1088/1742-6596/180/1/012085 PG 8 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700086 ER PT S AU Huang, C An, W Decyk, VK Lu, W Mori, WB Tsung, FS Tzoufras, M Morshed, S Antonsen, T Feng, B Katsouleas, T Fonseca, RA Martins, SF Vieira, J Silva, LO Esarey, E Geddes, CGR Leemans, WP Cormier-Michel, E Vay, JL Bruhwiler, DL Cowan, B Cary, JR Paul, K AF Huang, C. An, W. Decyk, V. K. Lu, W. Mori, W. B. Tsung, F. S. Tzoufras, M. Morshed, S. Antonsen, T. Feng, B. Katsouleas, T. Fonseca, R. A. Martins, S. F. Vieira, J. Silva, L. O. Esarey, E. Geddes, C. G. R. Leemans, W. P. Cormier-Michel, E. Vay, J-L Bruhwiler, D. L. Cowan, B. Cary, J. R. Paul, K. BE Simon, H TI Recent results and future challenges for large scale particle-in-cell simulations of plasma-based accelerator concepts SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID WAKEFIELD ACCELERATION; CODE; LASER; OSIRIS AB The concept and designs of plasma-based advanced accelerators for high energy physics and photon science are modelled in the SciDAC COMPASS project with a suite of Particle-In-Cell codes and simulation techniques including the full electromagnetic model, the envelope model, the boosted frame approach and the quasi-static model. In this paper, we report the progress of the development of these models and techniques and present recent results achieved with large-scale parallel PIC simulations. The simulation needs for modelling the plasma-based advanced accelerator at the energy frontier is discussed and a path towards this goal is outlined. C1 [Huang, C.; An, W.; Decyk, V. K.; Lu, W.; Mori, W. B.; Tsung, F. S.] Univ Calif Los Angeles, Los Angeles, CA 90095 USA. [Tzoufras, M.] Univ Oxford, Clarendon Lab, Oxford OX1 3PU, England. [Morshed, S.; Antonsen, T.] Univ Maryland, College Pk, MD 20742 USA. [Feng, B.] Univ Southern Calif, Los Angeles, CA 90089 USA. [Katsouleas, T.] Duke Univ, Durham, NC 27708 USA. [Fonseca, R. A.; Martins, S. F.; Vieira, J.; Silva, L. O.] Inst Super Tecn, P-1049001 Lisbon, Portugal. [Esarey, E.; Geddes, C. G. R.; Leemans, W. P.; Cormier-Michel, E.; Vay, J-L] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Bruhwiler, D. L.; Cowan, B.; Cary, J. R.; Paul, K.] Tech X Corp, Boulder, CO 80303 USA. [Cary, J. R.] Univ Colorado, Boulder, CO 80309 USA. RP Huang, C (reprint author), Univ Calif Los Angeles, Los Angeles, CA 90095 USA. EM huangck@ee.ucla.edu RI Silva, Luis/C-3169-2009; Fonseca, Ricardo/B-7680-2009; Tzoufras, Michail/C-6436-2009; Vieira, Jorge/M-4373-2013; Lu, Wei/F-2504-2016 OI Silva, Luis/0000-0003-2906-924X; Fonseca, Ricardo/0000-0001-6342-6226; Vieira, Jorge/0000-0002-5515-3624; FU Department of Energy, Office of Science, through the SciDAC program; NNSA through NA-22 FX This work is supported by Department of Energy, Office of Science, through the SciDAC program, and by NNSA through NA-22. Simulations are conducted at the NERSC platforms, the UCLA Dawson cluster, the LBNL Linux cluster, the LLNL ATLAS facility and the Argonne ALCF facility. NR 40 TC 5 Z9 5 U1 0 U2 7 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012005 DI 10.1088/1742-6596/180/1/012005 PG 11 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700006 ER PT S AU Joo, B AF Joo, Balint CA USQCD Collaboration Hadron Spectrum Collaboration BE Simon, H TI Lattice QCD simulations on big cats, sea monsters and clock towers SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB We present details of lattice QCD computations we are performing on the Cray XT series of computers, from BigBen - an XT3 hosted at the Pittsburgh Supercomputing Center (PSC) - through Jaguar (XT4) and Kraken (XT5) - which are hosted at the National Center for Computational Science (NCCS) and the National Institute of Computational Science (NICS), respectively, at Oak Ridge National Laboratory (ORNL). We discuss algorithmic tuning to make the computation more efficient and present some recent results. C1 [Joo, Balint; USQCD Collaboration; Hadron Spectrum Collaboration] Jefferson Lab, Newport News, VA 23606 USA. RP Joo, B (reprint author), Jefferson Lab, 12000 Jefferson Ave, Newport News, VA 23606 USA. EM bjoo@jlab.org NR 11 TC 0 Z9 0 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012070 DI 10.1088/1742-6596/180/1/012070 PG 5 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700071 ER PT S AU Leyffer, S Linderoth, J Luedtke, J Miller, A Munson, T AF Leyffer, Sven Linderoth, Jeff Luedtke, James Miller, Andrew Munson, Todd BE Simon, H TI Applications and algorithms for mixed integer nonlinear programming SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB The mathematical modeling of systems often requires the use of both nonlinear and discrete components. Discrete decision variables model dichotomies, discontinuities, and general logical relationships. Nonlinear functions are required to accurately represent physical properties such as pressure, stress, temperature, and equilibrium. Problems involving both discrete variables and nonlinear constraint functions are known as mixed-integer nonlinear programs (MINLPs) and are among the most challenging computational optimization problems faced by researchers and practitioners. In this paper, we describe relevant scientific applications that are naturally modeled as MINLPs, we provide an overview of available algorithms and software, and we describe ongoing methodological advances for solving MINLPs. These algorithmic advances are making increasingly larger instances of this important family of problems tractable. C1 [Leyffer, Sven; Munson, Todd] Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. [Linderoth, Jeff; Luedtke, James] Univ Wisconsin, Dept Ind & Syst Engn, Madison, WI 53706 USA. [Miller, Andrew] Univ Bordeaux 1, IMB, RealOpt, INRIA Bordeaux Sud Ouest, F-33405 Talence, France. RP Leyffer, S (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. EM linderoth@wisc.edu RI Linderoth, Jeffrey/B-4995-2013 OI Linderoth, Jeffrey/0000-0003-4442-3059 FU National Science Foundation [CCF-0830153]; Office of Advanced Scientific Computing Research; office of Science, U.S Department of Energy [DE-AC02-06CH11357, DE-FG02-08ER25861, DE-FG02-09ER25869] FX This work was supported in part by National Science Foundation Grant CCF-0830153 and by the Office of Advanced Scientific Computing Research,office of Science, U.S Department of Energy, under Contract DE-AC02-06CH11357 and Grants DE-FG02-08ER25861 and DE-FG02-09ER25869. NR 14 TC 4 Z9 4 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012014 DI 10.1088/1742-6596/180/1/012014 PG 5 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700015 ER PT S AU Li, XS Shao, M Yamazaki, I Ng, EG AF Li, X. S. Shao, M. Yamazaki, I. Ng, E. G. BE Simon, H TI Factorization-based sparse solvers and preconditioners SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID DIMENSIONS AB Efficient solution of large-scale, ill-conditioned and highly-indefinite algebraic equations often relies on high quality preconditioners together with iterative solvers. Because of their robustness, the factorization-based algorithms could play a significant role when they are combined with iterative methods, particularly in the development of scalable solvers. We present our recent work in using the direct solver SuperLU code base to develop a new supernode-based ILU preconditioner and a domain-decomposition hybrid solver. Our ILU preconditioner is a modification of the classic ILUTP approach, incorporating a number of techniques to improve robustness and performance, which include new dropping strategies that accommodate the use of supernodal structure in the factored matrix. Our hybrid solver is based on the Schur complement method. We use parallel graph partitioning to obtain hierarchical interface/domain decomposition, and multiple parallel direct solvers to solve the subdomain problems simultaneously, and parallel preconditioned iterative solvers to solve the interface problem. We will demonstrate the effectiveness of our new techniques by applying them to two SciDAC applications, modeling next-generation particle accelerators and fusion devices. C1 [Li, X. S.; Yamazaki, I.; Ng, E. G.] Lawrence Berkeley Natl Lab, 1 Cyclotron Rd,MS 50F-1650, Berkeley, CA 94720 USA. [Shao, M.] Fudan Univ, Sch Math Sci, Shanghai 200433, Peoples R China. RP Li, XS (reprint author), Lawrence Berkeley Natl Lab, 1 Cyclotron Rd,MS 50F-1650, Berkeley, CA 94720 USA. EM xsli@lbl.gov OI Shao, Meiyue/0000-0002-4914-7666 FU Office of Science, Office of Advanced Scientific Computing Research, of the U.S. Department of Energy [DE-AC02-05CH11231] FX This research was supported in part by the Director, Office of Science, Office of Advanced Scientific Computing Research, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. We used the resources at the National Energy Research Scientific Computing Center. NR 21 TC 5 Z9 5 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012015 DI 10.1088/1742-6596/180/1/012015 PG 10 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700016 ER PT S AU Lin, Z Xiao, Y Holod, I Zhang, W Deng, W Klasky, S Lofstead, J Kamath, C Wichmann, N AF Lin, Z. Xiao, Y. Holod, I. Zhang, W. Deng, W. Klasky, S. Lofstead, J. Kamath, C. Wichmann, N. BE Simon, H TI Advanced simulation of electron heat transport in fusion plasmas SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID PARTICLE SIMULATION; TURBULENCE; MODEL AB Electron transport in burning plasmas is more important since fusion products first heat electrons. First-principles simulations of electron turbulence are much more challenging due to the multi-scale dynamics of the electron turbulence, and have been made possible by close collaborations between plasma physicists and computational scientists. The GTC simulations of collisionless trapped electron mode (CTEM) turbulence show that the electron heat transport exhibits a gradual transition from Bohm to gyroBohm scaling when the device size is increased. The deviation from the gyroBohm scaling can be induced by large turbulence eddies, turbulence spreading, and non-diffusive transport processes. Analysis of radial correlation function shows that CTEM turbulence eddies are predominantly microscopic but with a significant tail in the mesoscale. A comprehensive analysis of kinetic and fluid time scales shows that zonal flow shearing is the dominant decorrelation mechanism. The mesoscale eddies result from a dynamical process of linear streamers breaking by zonal flows and merging of microscopic eddies. The radial profile of the electron heat conductivity only follows the profile of fluctuation intensity on a global scale, whereas the ion transport tracks more sensitively the local fluctuation intensity. This suggests the existence of a nondiffusive component in the electron heat flux, which arises from the ballistic radial E X B drift of trapped electrons due to a combination of the presence of mesoscale eddies and the weak de-tuning of the toroidal precessional resonance that drives the CTEM instability. On the other hand, the ion radial excursion is not affected by the mesoscale eddies due to a parallel decorrelation, which is not operational for the trapped electrons because of a bounce averaging process associated with the electron fast motion along magnetic field lines. The presence of the nondiffusive component raises question on the applicability of the usual quasilinear theory for the CTEM electron transport. This is in contrast to the good agreement between the quasilinear transport theory and simulation results of the electron heat transport in electron temperature gradient (ETG) turbulence, which is regulated by a wave-particle decorrelation. Therefore, the transport in the CTEM turbulence is a fluid-like eddy mixing process even though the linear CTEM instability is driven by a kinetic resonance. In contrast, a kinetic process dominates the transport in the ETG turbulence, which is characterized by macroscopic streamers. C1 [Lin, Z.; Xiao, Y.; Holod, I.; Zhang, W.; Deng, W.] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA. [Klasky, S.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Lofstead, J.] Georgia Inst Technol, Coll Comp, Atlanta, GA 30332 USA. [Kamath, C.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Wichmann, N.] Cray Inc, Seattle, WA 98104 USA. RP Lin, Z (reprint author), Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA. EM zhihongl@uci.edu RI Deng, Wenjun/D-7807-2013; Holod, Ihor/G-2801-2015 OI Deng, Wenjun/0000-0002-4591-264X; FU SciDAC GPS-TTBP; GSEP; CPES centers FX This work is supported by SciDAC GPS-TTBP, GSEP, and CPES centers. We acknowledge fruitful discussions with C. S. Chang, L. Chen, P. H. Diamond, S. Ethier, T. S. Hahm, and F. Zonca. Simulations used supercomputers at ORNL and NERSC. NR 27 TC 0 Z9 0 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012059 DI 10.1088/1742-6596/180/1/012059 PG 10 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700060 ER PT S AU Luu, T Walker-Loud, A AF Luu, T. Walker-Loud, A. BE Simon, H TI Nuclear Forces and High-Performance Computing: The Perfect Match SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID LATTICE QCD; CHIRAL FERMIONS; SCATTERING; MOMENTUM; STATES AB High-performance computing is now enabling the calculation of certain hadronic interaction parameters directly from Quantum Chromodynamics, the quantum field theory that governs the behavior of quarks and gluons and is ultimately responsible for the nuclear strong force. In this paper we briefly describe the state of the field and show how other aspects of hadronic interactions will be ascertained in the near future. We give estimates of computational requirements needed to obtain these goals, and outline a procedure for incorporating these results into the broader nuclear physics community. C1 [Luu, T.] Lawrence Livermore Natl Lab, Div N, Livermore, CA 94551 USA. [Walker-Loud, A.] Coll William & Mary, Dept Phys, Williamsburg, VA 23187 USA. RP Luu, T (reprint author), Lawrence Livermore Natl Lab, Div N, Livermore, CA 94551 USA. EM tluu@llnl.gov FU OJI [DE-FG02-07ER41527]; U.S. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344] FX We thank members of NPLQCD for their inciteful critiques of this manuscript. Luu thanks M. Hruska for useful discussions. Walker-Loud was supported under OJI Grant DE-FG02-07ER41527. Luu performed this work under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. NR 47 TC 1 Z9 1 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012081 DI 10.1088/1742-6596/180/1/012081 PG 11 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700082 ER PT S AU Mascarenhas, A Grout, RW Yoo, CS Chen, JH AF Mascarenhas, A. Grout, R. W. Yoo, C. S. Chen, J. H. BE Simon, H TI Tracking flame base movement and interaction with ignition kernels using topological methods SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID MORSE-SMALE COMPLEXES AB We segment the stabilization region in a simulation of a lifted jet flame based on its topology induced by the Y-OH field. Our segmentation method yields regions that correspond to the flame base and to potential auto-ignition kernels. We apply a region overlap based tracking method to follow the flame-base and the kernels over time, to study the evolution of kernels, and to detect when the kernels merge with the flame. The combination of our segmentation and tracking methods allow us observe flame stabilization via merging between the flame base and kernels; we also obtain Y-CH2O histories inside the kernels and detect a distinct decrease in radical concentration during transition to a developed flame. C1 [Mascarenhas, A.; Grout, R. W.; Yoo, C. S.; Chen, J. H.] Sandia Natl Labs, Combust Res Dept, Livermore, CA 94550 USA. RP Mascarenhas, A (reprint author), Sandia Natl Labs, Combust Res Dept, Livermore, CA 94550 USA. EM aamasca@sandia.gov RI Yoo, Chun Sang/E-5900-2010 OI Yoo, Chun Sang/0000-0003-1094-4016 NR 18 TC 2 Z9 2 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR 012086 DI 10.1088/1742-6596/180/1/012086 PG 6 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700087 ER PT S AU McCallen, DB Larsen, SC AF McCallen, D. B. Larsen, S. C. BE Simon, H TI High performance simulations for transformational earthquake risk assessments SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB Earthquakes occurring around the world are responsible for extensive loss of life and infrastructure damage. On average, 1100 earthquakes with significant damage potential occur world-wide per year, and a major societal challenge is to design a human environment that contains appropriate earthquake resistance. Design of critical infrastructure such as large buildings, bridges, industrial facilities and nuclear power plants in seismically active regions is a significant scientific and engineering challenge that encompasses the multiple disciplines of geophysics, geotechnical and structural engineering. Because of the great complexities in earthquake physical processes, traditional approaches to seismic hazard assessment have relied heavily on historical earthquake observations. In this approach, observational data from many locations is homogenized into an empirical assessment of earthquake hazard at any specific site of interest. With major advancements in high performance computing platforms and algorithms, it is now possible to utilize physics-based predictive models to gain enhanced insight about site-specific earthquake ground motions and infrastructure response. This paper discusses recent advancements in geophysics and infrastructure simulations and future challenges in implementing advanced simulations for both earthquake hazard (future ground motions) and earthquake risk (infrastructure response and damage) assessments. C1 [McCallen, D. B.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA. [Larsen, S. C.] Lawrence Livermore Natl Lab, Lawrence Livermore Natl Secur LLC, Livermore, CA 94550 USA. RP McCallen, DB (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM dbmccallen@lbl.gov NR 9 TC 0 Z9 0 U1 1 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012061 DI 10.1088/1742-6596/180/1/012061 PG 9 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700062 ER PT S AU Miller, SD Herwig, KW Ren, S Vazhkudai, SS Jemian, PR Luitz, S Salnikov, AA Gaponenko, I Proffen, T Lewis, P Green, ML AF Miller, Stephen D. Herwig, Kenneth W. Ren, Shelly Vazhkudai, Sudharshan S. Jemian, Pete R. Luitz, Steffen Salnikov, Andrei A. Gaponenko, Igor Proffen, Thomas Lewis, Paul Green, Mark L. BE Simon, H TI Data Management and Its Role in Delivering Science at DOE BES User Facilities - Past, Present, and Future SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB The primary mission of user facilities operated by Basic Energy Sciences under the Department of Energy is to produce data for users in support of open science and basic research [1]. We trace back almost 30 years of history across selected user facilities illustrating the evolution of facility data management practices and how these practices have related to performing scientific research. The facilities cover multiple techniques such as X-ray and neutron scattering, imaging and tomography sciences. Over time, detector and data acquisition technologies have dramatically increased the ability to produce prolific volumes of data challenging the traditional paradigm of users taking data home upon completion of their experiments to process and publish their results. During this time, computing capacity has also increased dramatically, though the size of the data has grown significantly faster than the capacity of one's laptop to manage and process this new facility produced data. Trends indicate that this will continue to be the case for yet some time. Thus users face a quandary for how to manage today's data complexity and size as these may exceed the computing resources users have available to themselves. This same quandary can also stifle collaboration and sharing. Realizing this, some facilities are already providing web portal access to data and computing thereby providing users access to resources they need [2]. Portal based computing is now driving researchers to think about how to use the data collected at multiple facilities in an integrated way to perform their research, and also how to collaborate and share data. In the future, inter-facility data management systems will enable next tier cross-instrument-cross facility scientific research fuelled by smart applications residing upon user computer resources. We can learn from the medical imaging community that has been working since the early 1990's to integrate data from across multiple modalities to achieve better diagnoses [3] - similarly, data fusion across BES facilities will lead to new scientific discoveries. C1 [Miller, Stephen D.; Herwig, Kenneth W.; Ren, Shelly; Vazhkudai, Sudharshan S.] Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA. [Jemian, Pete R.] Argonne Natl Lab, Argonne, IL 60439 USA. [Luitz, Steffen; Salnikov, Andrei A.; Gaponenko, Igor] SLAC Natl Accelerator Lab, Menlo Pk, CA USA. [Proffen, Thomas; Lewis, Paul] Los Alamos Natl Lab, Los Alamos, NM USA. [Green, Mark L.] Tech X Corp, Boulder, CO USA. RP Miller, SD (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA. EM millersd@ornl.gov RI Herwig, Kenneth/F-4787-2011; Lujan Center, LANL/G-4896-2012; Proffen, Thomas/B-3585-2009; OI Proffen, Thomas/0000-0002-1408-6031; Ren, Shelly/0000-0002-0311-624X NR 3 TC 0 Z9 0 U1 0 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012049 DI 10.1088/1742-6596/180/1/012049 PG 8 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700050 ER PT S AU Mills, RT Hammond, GE Lichtner, PC Sripathi, V Mahinthakumar, G Smith, BF AF Mills, Richard Tran Hammond, Glenn E. Lichtner, Peter C. Sripathi, Vamsi Mahinthakumar, G. (Kumar) Smith, Barry F. BE Simon, H TI Modeling Subsurface Reactive Flows Using Leadership-Class Computing SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID TRANSPORT AB We describe our experiences running PFLOTRAN-a code for simulation of coupled hydro-thermal-chemical processes in variably saturated, non-isothermal, porous media-on leadership-class supercomputers, including initial experiences running on the petaflop incarnation of Jaguar, the Cray XT5 at the National Center for Computational Sciences at Oak Ridge National Laboratory. PFLOTRAN utilizes fully implicit time-stepping and is built on top of the Portable, Extensible Toolkit for Scientific Computation (PETSc). We discuss some of the hurdles to "at scale" performance with PFLOTRAN and the progress we have made in overcoming them on leadership-class computer architectures. C1 [Mills, Richard Tran] Oak Ridge Natl Lab, Computat Earth Sci Grp, Div Math & Comp Sci, Oak Ridge, TN 37831 USA. [Hammond, Glenn E.] Pacific NW Natl Lab, Environm Technol Div, Hydrol Grp, Richland, WA 99352 USA. [Lichtner, Peter C.] Los Alamos Natl Lab, Earth & Environm Sci Div, Hydrol Geochem & Geol Grp, Los Alamos, NM 87545 USA. [Sripathi, Vamsi] N Carolina State Univ, Dept Comp Sci, Raleigh, NC 27695 USA. [Mahinthakumar, G. (Kumar)] N Carolina State Univ, Dept Civil Construct & Environm Engn, Raleigh, NC 27695 USA. [Smith, Barry F.] Argonne Natl Lab, Math & Comp Sci Div, Argonne, IL 60439 USA. RP Mills, RT (reprint author), Oak Ridge Natl Lab, Computat Earth Sci Grp, Div Math & Comp Sci, Oak Ridge, TN 37831 USA. EM rmills@ornl.gov; glenn.hammond@pnl.gov; lichtner@lanl.gov; vamsi_s@ncsu.edu; gmkumar@ncsu.edu; bsmith@mcs.anl.gov FU Climate and Environmental Sciences Division (CESD) of the Office of Biological and Environmental Research (BER); Computational Science Research and Partnerships (SciDAC) Division of the Office of Advanced Scientific Computing Research (ASCR) within the U.S. Department of Energy's Office of Science (SC).; U.S. Department of Energy [DE-AC05-00OR22725, DE-AC02-06CH11357]; U.S. Department of Energy by Battelle Memorial Institute [DE-AC06-76RL01830]; National Nuclear Security Administration of the U.S. Department of Energy [DE-AC52-06NA25396] FX This research was partially sponsored by the Climate and Environmental Sciences Division (CESD) of the Office of Biological and Environmental Research (BER) and the Computational Science Research and Partnerships (SciDAC) Division of the Office of Advanced Scientific Computing Research (ASCR) within the U.S. Department of Energys Office of Science (SC). This research used resources of the National Center for Computational Sciences (NCCS) at Oak Ridge National Laboratory (ORNL), which is managed by UT-Battelle, LLC, for the U.S. Department of Energy under Contract No. DE-AC05-00OR22725. Pacific Northwest National Laboratory is managed for the U.S. Department of Energy by Battelle Memorial Institute under Contract No. DE-AC06-76RL01830. Argonne National Laboratory is managed by UChicago Argonne, LLC, for the U.S. Department of Energy under Contract No. DE-AC02-06CH11357. Los Alamos National Laboratory is managed is operated by Los Alamos National Security, LLC, for the National Nuclear Security Administration of the U.S. Department of Energy under contract DE-AC52-06NA25396. NR 12 TC 7 Z9 7 U1 0 U2 8 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012062 DI 10.1088/1742-6596/180/1/012062 PG 10 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700063 ER PT S AU Min, MS Fischer, P Montgomery, J Gray, S AF Min, Misun Fischer, Paul Montgomery, Jason Gray, Stephen BE Simon, H TI Large-scale electromagnetic modelings based on high-order methods: nanoscience applications SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB This paper presents large-scale computations and theoretical or computational aspects of the spectral element methods for solving Maxwell's equations that have potential applications in nanoscience for surface-enhanced Raman scattering (SERS) and solar cell devices. We study the surface-enhanced electromagnetic fields near the surface of metallic nanoparticles using spectral element discontinuous Galerkin method. We solve Maxwell's equations in time-domain and provide accuracy and efficiency of our method compared to the conventional finite difference method. We demonstrate light transmission properties for nanoslab and nanoslits, and time-averaged electric fields over the cross sections of nanoholes in a hexagonal array. C1 [Min, Misun; Fischer, Paul] Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. [Montgomery, Jason; Gray, Stephen] Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. RP Min, MS (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. EM mmin@mcs.anl.gov FU Office of Advanced Scientific Computing Research, Office of Science, U.S. Department of Energy [DE-AC02-06CH11357] FX This work was supported by the Office of Advanced Scientific Computing Research, Office of Science, U.S. Department of Energy, under Contract DE-AC02-06CH11357. NR 7 TC 1 Z9 1 U1 0 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012016 DI 10.1088/1742-6596/180/1/012016 PG 5 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700017 ER PT S AU Molina-Estolano, E Maltzahn, C Bent, J Brandt, SA AF Molina-Estolano, E. Maltzahn, C. Bent, J. Brandt, S. A. BE Simon, H TI Building a parallel file system simulator SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB Parallel file systems are gaining in popularity in high-end computing centers as well as commercial data centers. High-end computing systems are expected to scale exponentially and to pose new challenges to their storage scalability in terms of cost and power. To address these challenges scientists and file system designers will need a thorough understanding of the design space of parallel file systems. Yet there exist few systematic studies of parallel file system behavior at petabyte- and exabyte scale. An important reason is the significant cost of getting access to large-scale hardware to test parallel file systems. To contribute to this understanding we are building a parallel file system simulator that can simulate parallel file systems at very large scale. Our goal is to simulate petabyte-scale parallel file systems on a small cluster or even a single machine in reasonable time and fidelity. With this simulator, file system experts will be able to tune existing file systems for specific workloads, scientists and file system deployment engineers will be able to better communicate workload requirements, file system designers and researchers will be able to try out design alternatives and innovations at scale, and instructors will be able to study very large-scale parallel file system behavior in the class room. In this paper we describe our approach and provide preliminary results that are encouraging both in terms of fidelity and simulation scalability. C1 [Molina-Estolano, E.; Maltzahn, C.; Brandt, S. A.] Univ Calif Santa Cruz, UCSC Syst Res Lab, Santa Cruz, CA 95064 USA. [Bent, J.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Molina-Estolano, E (reprint author), Univ Calif Santa Cruz, UCSC Syst Res Lab, Santa Cruz, CA 95064 USA. EM eestolan@cs.ucsc.edu; carlosm@cs.ucsc.edu; johnbent@lanl.gov; scott@cs.ucsc.edu NR 14 TC 4 Z9 4 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012050 DI 10.1088/1742-6596/180/1/012050 PG 7 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700051 ER PT S AU Murphy, RC AF Murphy, Richard C. BE Simon, H TI DOE's Institute for Advanced Architecture and Algorithms: an application-driven approach SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB This paper describes an application driven methodology for understanding the impact of future architecture decisions on the end of the MPP era. Fundamental transistor device limitations combined with application performance characteristics have created the switch to multicore/multithreaded architectures. Designing large-scale supercomputers to match application demands is particularly challenging since performance characteristics are highly counter-intuitive. In fact, data movement more than FLOPS dominates. This work discusses some basic performance analysis for a set of DOE applications, the limits of CMOS technology, and the impact of both on future architectures. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Murphy, RC (reprint author), Sandia Natl Labs, POB 5800,MS 1319, Albuquerque, NM 87185 USA. EM rcmurph@sandia.gov NR 9 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012044 DI 10.1088/1742-6596/180/1/012044 PG 9 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700045 ER PT S AU Newman, GA Commer, M AF Newman, Gregory A. Commer, Michael BE Simon, H TI Massively parallel electrical conductivity imaging of the subsurface: applications to hydrocarbon exploration SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB Three-dimensional (3D) geophysical imaging is now receiving considerable attention for electrical conductivity mapping of potential offshore oil and gas reservoirs. The imaging technology employs controlled source electromagnetic (CSEM) and magnetotelluric (MT) fields and treats geological media exhibiting transverse anisotropy. Moreover when combined with established seismic methods, direct imaging of reservoir fluids is possible. Because of the size of the 3D conductivity imaging problem, strategies are required exploiting computational parallelism and optimal meshing. The algorithm thus developed has been shown to scale to tens of thousands of processors. In one imaging experiment, 32,768 tasks/processors on the IBM Watson Research Blue Gene/L supercomputer were successfully utilized. Over a 24 hour period we were able to image a large scale field data set that previously required over four months of processing time on distributed clusters based on Intel or AMD processors utilizing 1024 tasks on an InfiniBand fabric. Electrical conductivity imaging using massively parallel computational resources produces results that cannot be obtained otherwise and are consistent with timeframes required for practical exploration problems. C1 [Newman, Gregory A.; Commer, Michael] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Newman, GA (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, MS-90-1116, Berkeley, CA 94720 USA. EM GANewman@lbl.gov RI Newman, Gregory/G-2813-2015; Commer, Michael/G-3350-2015 OI Commer, Michael/0000-0003-0015-9217 NR 10 TC 1 Z9 1 U1 0 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012063 DI 10.1088/1742-6596/180/1/012063 PG 6 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700064 ER PT S AU Oefelein, JC Chen, JH Sankaran, R AF Oefelein, J. C. Chen, J. H. Sankaran, R. BE Simon, H TI High-fidelity simulations for clean and efficient combustion of alternative fuels SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID DIRECT NUMERICAL-SIMULATION; SOOT FORMATION; JET FLAMES; INHOMOGENEITIES; TRANSPORT; IGNITION; CLOSURE AB There is an urgent and growing demand for high-fidelity simulations that capture complex turbulence-chemistry interactions in propulsion and power systems, and in particular, that capture and discriminate the effects of fuel variability. This project addresses this demand using the Large Eddy Simulation (LES) technique (led by Oefelein) and the Direct Numerical Simulation (DNS) technique (led by Chen). In particular, we are conducting research under the INCITE program that is tightly coupled with funded projects established under the DOE Basic Energy Sciences and Energy Efficiency and Renewable Energy programs that will provide the foundational science required to develop a predictive modeling capability for design of advanced engines for transportation. Application of LES provides the formal ability to treat the full range of multidimensional time and length scales that exist in turbulent reacting flows in a computationally feasible manner and thus provides a way to simulate reacting flow phenomena in complex internal-combustion engine geometries at device relevant conditions. Application of DNS provides a way to study fundamental issues related to small-scale combustion processes in canonical configurations to understand dynamics that occur over a range of reactive-diffusive scales. Here we describe the challenges and present representative examples of the types of simulations each respective tool has been used for as part of the INCITE program. We focus on recent experiences on the Oak Ridge National Laboratory (ORNL) National Center for Computational Sciences (NCCS) Cray-XT Platform (i.e., Jaguar). C1 [Oefelein, J. C.; Chen, J. H.; Sankaran, R.] Sandia Natl Labs, Reacting Flow Res Dept, Livermore, CA 94550 USA. RP Oefelein, JC (reprint author), Sandia Natl Labs, Reacting Flow Res Dept, Livermore, CA 94550 USA. EM oefelei@sandia.gov RI Sankaran, Ramanan/D-9254-2015 OI Sankaran, Ramanan/0000-0002-5352-9915 FU U. S. Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences; United States Department of Energy [DE-AC04-94-AL85000]; National Center for Computational Sciences (NCCS) at ORNL; DOE Office of Science [DE-AC05-00OR22725] FX This work was supported by the U. S. Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences. Sandia National Laboratories is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy under contract DE-AC04-94-AL85000. The work at Oak Ridge National Laboratory (ORNL) was supported by and used resources of the National Center for Computational Sciences (NCCS) at ORNL, supported by the DOE Office of Science under contract DE-AC05-00OR22725. NR 18 TC 0 Z9 0 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012033 DI 10.1088/1742-6596/180/1/012033 PG 5 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700034 ER PT S AU Palmer, B Fang, YL Gurumoorthi, V Hammond, G Fort, J Scheibe, T AF Palmer, Bruce Fang, Yilin Gurumoorthi, Vidhya Hammond, Glenn Fort, James Scheibe, Tim BE Simon, H TI Developing a component-based framework for subsurface simulation using the Common Component Architecture SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID PERFORMANCE AB This paper will provide a brief overview of two frameworks being developed for subsurface simulations. The first is based on the Smoothed Particle Hydrodynamics algorithm and is designed to model flow and transport at the pore scale. The second is based on the Subsurface Transport Over Multiple Phases subsurface continuum code (STOMP) and is designed to simulate flow at the Darcy scale. Both frameworks have been built using the Common Component Architecture toolkit. These frameworks will eventually be combined into a single framework for performing hybrid multiscale simulations that seamlessly integrate both the particle and continuum simulations together. C1 [Palmer, Bruce; Fang, Yilin; Gurumoorthi, Vidhya; Hammond, Glenn; Fort, James; Scheibe, Tim] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Palmer, B (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99352 USA. EM bruce.palmer@pnl.gov RI Fang, Yilin/J-5137-2015 NR 6 TC 0 Z9 0 U1 0 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012064 DI 10.1088/1742-6596/180/1/012064 PG 5 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700065 ER PT S AU Peterka, T Ross, RB Shen, HW Ma, KL Kendall, W Yu, H AF Peterka, T. Ross, R. B. Shen, H-W Ma, K-L Kendall, W. Yu, H. BE Simon, H TI Parallel visualization on leadership computing resources SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB Changes are needed in the way that visualization is performed, if we expect the analysis of scientific data to be effective at the petascale and beyond. By using similar techniques as those used to parallelize simulations, such as parallel I/O, load balancing, and effective use of interprocess communication, the supercomputers that compute these datasets can also serve as analysis and visualization engines for them. Our team is assessing the feasibility of performing parallel scientific visualization on some of the most powerful computational resources of the U.S. Department of Energy's National Laboratories in order to pave the way for analyzing the next generation of computational results. This paper highlights some of the conclusions of that research. C1 [Peterka, T.; Ross, R. B.] Argonne Natl Lab, Math & Comp Sci Div, Argonne, IL 60439 USA. [Shen, H-W] Ohio State Univ, Dept Comp Sci & Engn, Columbus, OH 43210 USA. [Ma, K-L] Univ Calif Davis, Dept Comp Sci, Davis, CA 95616 USA. [Kendall, W.] Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN 37996 USA. [Yu, H.] Sandia Natl Labs, Livermore, CA 94551 USA. RP Peterka, T (reprint author), Argonne Natl Lab, Math & Comp Sci Div, Argonne, IL 60439 USA. EM tpeterka@mcs.anl.gov FU Office of Advanced Scientific Computing Research, Office of Science, U.S. Department of Energy [DE-AC02-06CH11357]; DOE [DE-FC02-06ER25777] FX We thank John Blondin and Tony Mezzacappa for their dataset and valuable feedback. We gratefully acknowledge the use of the resources of the Argonne Leadership Computing Facility at Argonne National Laboratory and the National Center for Computational Sciences at Oak Ridge National Laboratory. This work was supported by the Office of Advanced Scientific Computing Research, Office of Science, U.S. Department of Energy, under Contract DE-AC02-06CH11357. Work is also supported by DOE with agreement No. DE-FC02-06ER25777. NR 8 TC 0 Z9 1 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012088 DI 10.1088/1742-6596/180/1/012088 PG 5 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700089 ER PT S AU Potter, K Wilson, A Bremer, PT Williams, D Doutriaux, C Pascucci, V Johhson, C AF Potter, Kristin Wilson, Andrew Bremer, Peer-Timo Williams, Dean Doutriaux, Charles Pascucci, Valerio Johhson, Chris BE Simon, H TI Visualization of uncertainty and ensemble data: Exploration of climate modeling and weather forecast data with integrated ViSUS-CDAT systems SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB Climate scientists and meteorologists are working towards a better understanding of atmospheric conditions and global climate change. To explore the relationships present in numerical predictions of the atmosphere, ensemble datasets are produced that combine time- and spatially-varying simulations generated using multiple numeric models, sampled input conditions, and perturbed parameters. These data sets mitigate as well as describe the uncertainty present in the data by providing insight into the effects of parameter perturbation, sensitivity to initial conditions, and inconsistencies in model outcomes. As such, massive amounts of data are produced, creating challenges both in data analysis and in visualization. This work presents an approach to understanding ensembles by using a collection of statistical descriptors to summarize the data, and displaying these descriptors using variety of visualization techniques which are familiar to domain experts. The resulting techniques are integrated into the ViSUS/Climate Data and Analysis Tools (CDAT) system designed to provide a directly accessible, complex visualization framework to atmospheric researchers. C1 [Potter, Kristin; Pascucci, Valerio; Johhson, Chris] Univ Utah, Sci Comp & Imaging Inst, Salt Lake City, UT 84112 USA. [Wilson, Andrew] Sandia Natl Labs, Livermore, CA USA. [Bremer, Peer-Timo; Williams, Dean; Doutriaux, Charles] Lawrence Livermore Natl Lab, Livermore, CA USA. RP Potter, K (reprint author), Univ Utah, Sci Comp & Imaging Inst, Salt Lake City, UT 84112 USA. EM kpotter@cs.utah.edu; atwilso@sandia.gov; bremer5@llnl.gov; williams13@llnl.gov; doutriaux1@llnl.gov; pascucci@sci.utah.edu; crj@sci.utah.edu FU DOE SciDAC Visualization and Analytics Center for Enabling Technologies; NIH NCRR Center for Integrative Biomedical Computing [5P41RR012553-02]; United States Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000] FX This work was funded in part by the DOE SciDAC Visualization and Analytics Center for Enabling Technologies (www.vacet.org) and the NIH NCRR Center for Integrative Biomedical Computing (www.sci.utah.edu/cibc), NIH NCRR Grant No. 5P41RR012553-02. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energys National Nuclear Security Administration under contract DE-AC04-94AL85000. NR 14 TC 5 Z9 5 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012089 DI 10.1088/1742-6596/180/1/012089 PG 5 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700090 ER PT S AU Schuchardt, K Chase, J Daily, J Elsethagen, T Palmer, B Scheibe, T AF Schuchardt, Karen Chase, Jared Daily, Jeff Elsethagen, Todd Palmer, Bruce Scheibe, Tim BE Simon, H TI Application of the SALSSA framework to the validation of smoothed particle hydrodynamics simulations of low Reynolds number flows SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB The Support Architecture for Large-Scale Subsurface Analysis (SALSSA) provides an extensible framework, sophisticated graphical user interface (GUI), and underlying data management system that simplifies the process of running subsurface models, tracking provenance information, and analyzing the model results. The SALSSA software framework is currently being applied to validating the Smoothed Particle Hydrodynamics (SPH) model. SPH is a three-dimensional model of flow and transport in porous media at the pore scale. Because fluid flow in porous media at velocities common in natural porous media occur at low Reynolds numbers, it is important to verify that the SPH model is producing accurate flow solutions in this regime. Validating SPH requires performing a series of simulations and comparing these simulation flow solutions to analytical results or numerical results using other methods. This validation study has been greatly aided by the application of the SALSSA framework, which provides capabilities to setup, execute, analyze, and administer these SPH simulations. C1 [Schuchardt, Karen; Chase, Jared; Daily, Jeff; Elsethagen, Todd; Palmer, Bruce; Scheibe, Tim] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Schuchardt, K (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99352 USA. EM karen.schuchardt@pnl.gov NR 8 TC 0 Z9 0 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012065 DI 10.1088/1742-6596/180/1/012065 PG 5 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700066 ER PT S AU Stoitsov, M More, J Nazarewicz, W Pei, JC Sarich, J Schunck, N Staszczak, A Wild, S AF Stoitsov, M. More, J. Nazarewicz, W. Pei, J. C. Sarich, J. Schunck, N. Staszczak, A. Wild, S. BE Simon, H TI Towards the universal nuclear energy density functional SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID FOCK-BOGOLYUBOV EQUATIONS; HARMONIC-OSCILLATOR BASIS; HARTREE-FOCK; PROGRAM AB The UNEDF SciDAC project to develop and optimize the energy density functional for atomic nuclei using state-of-the art computational infrastructure is briefly described. The ultimate goal is to replace current phenomenological models of the nucleus with a well-founded microscopic theory with minimal uncertainties, capable of describing nuclear data and extrapolating to unknown regions. C1 [Stoitsov, M.; Nazarewicz, W.; Pei, J. C.; Schunck, N.; Staszczak, A.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. [Nazarewicz, W.; Pei, J. C.; Schunck, N.; Staszczak, A.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Stoitsov, M.; Staszczak, A.] Bulgarian Acad Sci, INRNE, BU-1784 Sofia, Bulgaria. [More, J.; Sarich, J.; Wild, S.] Argonne Natl Lab, Argonne, IL 60439 USA. [Nazarewicz, W.] Univ Warsaw, Inst Theoret Phys, PL-00681 Warsaw, Poland. Marie Curie Sklodowska Univ, Inst Phys, PL-20031 Lublin, Poland. RP Stoitsov, M (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. EM stoitsovmv@ornl.gov RI Pei, Junchen/E-3532-2010; Wild, Stefan/P-4907-2016; OI Wild, Stefan/0000-0002-6099-2772; Schunck, Nicolas/0000-0002-9203-6849 FU OJI [DE-FG02- 07ER41527]; U.S. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; U.S. Department of Energy (DOE) [DOE-FC02-09ER41583]; DOE [DE-FG02-96ER40963, DE-AC05-00OR22725, DE-FG05-87ER40361, DE-FG03-03NA00083] FX We thank members of NPLQCD for their inciteful critiques of this manuscript. Luu thanks M. Hruska for useful discussions. Walker-Loud was supported under OJI Grant DE-FG02- 07ER41527. Luu performed this work under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344.Our DFT/Optimization UNEDF team includes M. Kortelainen, T. Lesinski, J. McDonnell, W. Nazarewicz, N. Nikolov, J.C. Pei, N. Schunck, and M. Stoitsov from ORNL/UT; G.I. Fann, H.A. Nam, and W.A. Shelton from ORNL; J. More, J. Sarich, and S. Wild from ANL; D. Furnstahl (OSU); S.K. Bogner and Biruk Gebremariam (NSCL/MSU); J. Dobaczewski (Warsaw/Jvyaskyla), and T. Duguet (Saclay).; The UNEDF SciDAC Collaboration is supported by the U.S. Department of Energy (DOE) under grant No. DOE-FC02-09ER41583. This work was also supported by DOE Contract Nos. DE-FG02-96ER40963 (University of Tennessee), DE-AC05-00OR22725 with UT-Battelle, LLC (Oak Ridge National Laboratory), DE-FG05-87ER40361 (Joint Institute for Heavy Ion Research), and DE-FG03-03NA00083 (Stewardship Science Academic Alliances). NR 13 TC 7 Z9 7 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012082 DI 10.1088/1742-6596/180/1/012082 PG 5 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700083 ER PT S AU Summers, MS Alvarez, G Meredith, J Maier, TA Schulthess, TC AF Summers, Michael S. Alvarez, Gonzalo Meredith, Jeremy Maier, Thomas A. Schulthess, Thomas C. BE Simon, H TI DCA plus plus : a case for science driven application development for leadership computing platforms SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID ATOMIC-SCALE; BI2SR2CACU2O8+DELTA AB The DCA++ code was one of the early science applications that ran on jaguar at the National Center for Computational Sciences, and the first application code to sustain a petaflop/s under production conditions on a general-purpose supercomputer. The code implements a quantum cluster method with a Quantum Monte Carlo kernel to solve the 2D Hubbard model for high-temperature superconductivity. It is implemented in C++, making heavy use of the generic programming model. In this paper, we discuss how this code was developed, reaching scalability and high efficiency on the world's fastest supercomputer in only a few years. We show how the use of generic concepts combined with systematic refactoring of codes is a better strategy for computational sciences than a comprehensive upfront design. C1 [Summers, Michael S.; Alvarez, Gonzalo; Meredith, Jeremy; Maier, Thomas A.] Oak Ridge Natl Lab, Comp Sci & Math Div, POB 2008,Mail Stop 6164, Oak Ridge, TN 37831 USA. [Schulthess, Thomas C.] ETH, Swiss Natl Supercomp Ctr, CH-9628 Zurich, Switzerland. [Schulthess, Thomas C.] ETH, Inst Theoret Phys, CH-9628 Zurich, Switzerland. RP Summers, MS (reprint author), Oak Ridge Natl Lab, Comp Sci & Math Div, POB 2008,Mail Stop 6164, Oak Ridge, TN 37831 USA. EM schulthess@cscs.ch RI Maier, Thomas/F-6759-2012 OI Maier, Thomas/0000-0002-1424-9996 FU Laboratory Directed Research and Development fund of Oak Ridge National Laboratory; Division for Scientific User Facilities Division of the Office of Basic Energy Sciences; National Center for Computational Sciences; Facilities Division of the Office of Advanced Scientific Computing Research (ASCR) FX This work was supported by the Laboratory Directed Research and Development fund of Oak Ridge National Laboratory and the Center for Nanophase Material Sciences, which is sponsored by the Division for Scientific User Facilities Division of the Office of Basic Energy Sciences, as well as a grant from the National Center for Computational Sciences, which is funded by the Facilities Division of the Office of Advanced Scientific Computing Research (ASCR). NR 10 TC 0 Z9 0 U1 0 U2 7 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012077 DI 10.1088/1742-6596/180/1/012077 PG 7 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700078 ER PT S AU Syamlal, M Guenther, C Gel, A Pannala, S AF Syamlal, M. Guenther, C. Gel, A. Pannala, S. BE Simon, H TI Advanced coal gasifier designs using large-scale simulations SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB Porting of the legacy code MFIX to a high performance computer (HPC) and the use of high resolution simulations for the design of a coal gasifier are described here. MFIX is based on a continuum multiphase flow model that considers gas and solids to form interpenetrating continua. Low resolution simulations of a commercial scale gasifier with a validated MFIX model revealed interesting physical phenomena with implications on the gasifier design, which prompted the study reported here. To be predictive, the simulations need to model the spatiotemporal variations in gas and solids volume fractions, velocities, temperatures with any associated phase change and chemical reactions. These processes occur at various time- and length-scales requiring very high spatial resolution and large number of iterations with small time-steps. We were able to perform perhaps the largest known simulations of gas-solids reacting flows, providing detailed information about the gas-solids flow structure and the pressure, temperature and species distribution in the gasifier. One key finding is the new features of the coal jet trajectory revealed with the high spatial resolution, which provides information on the accuracy of the lower resolution simulations. Methodologies far effectively combining high and low resolution simulations for design studies must be developed. From a computational science perspective, we found that global communication has to be reduced to achieve scalability to 1000s of cores, hybrid parallelization is required to effectively utilize the multicore chips, and the wait time in the batch queue significantly increases the actual time-to-solution. From our experience, development is required in the following areas: efficient solvers for heterogeneous, massively parallel systems; data analysis tools to extract information from large data sets; and programming environments for easily porting legacy codes to HPC. C1 [Syamlal, M.; Guenther, C.; Gel, A.] Natl Energy Technol Lab, Morgantown, WV 26505 USA. [Gel, A.] ALPEMI Consulting LLC, Phoenix, AZ 85044 USA. [Pannala, S.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Syamlal, M (reprint author), Natl Energy Technol Lab, Morgantown, WV 26505 USA. EM madhava.syamlal@netl.doe.gov RI Pannala, Sreekanth/F-9507-2010 FU U.S. DOE, Fossil Energy Advanced Research Program; U.S. Government [DE-AM26-04NT41817.670.01.03, DE-AC05-00OR22725]; National Energy Technology Laboratory's on-going research in multiphase [DE-AC26- 04NT41817]; Office of Science of the U.S.DOE [DE-AC05-00OR22725] FX The authors would like to acknowledge the financial support of the U.S. DOE, Fossil Energy Advanced Research Program. The submitted manuscript has been authored by several contractors for the U.S. Government under Contract Numbers DE-AM26-04NT41817.670.01.03 and DE-AC05-00OR22725. This technical effort was performed in support of the National Energy Technology Laboratorys on-going research in multiphase flows under the RDS contract DE-AC26- 04NT41817. Accordingly, the U.S. Government retains a non-exclusive, royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for U.S. Government purposes. This research used resources of the National Center for Computational Sciences at Oak Ridge National Laboratory, which is supported by the Office of Science of the U.S.DOE under Contract No. DE-AC05-00OR22725. NR 11 TC 6 Z9 6 U1 0 U2 6 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012034 DI 10.1088/1742-6596/180/1/012034 PG 10 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700035 ER PT S AU Tautges, TJ Caceres, A AF Tautges, Timothy J. Caceres, Alvaro BE Simon, H TI Scalable parallel solution coupling for multiphysics reactor simulation SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID MESH AB Reactor simulation depends on the coupled solution of various physics types, including neutronics, thermal/hydraulics, and structural mechanics. This paper describes the formulation and implementation of a parallel solution coupling capability being developed for reactor simulation. The coupling process consists of mesh and coupler initialization, point location, field interpolation, and field normalization. We report here our test of this capability on an example problem, namely, a reflector assembly from an advanced burner test reactor. Performance of this coupler in parallel is reasonable for the chosen problem size and range of processor counts. The runtime is dominated by startup costs, which amortize over the entire coupled simulation. Future efforts will include adding more sophisticated interpolation and normalization methods, to accommodate different numerical solvers used in various physics modules and to obtain better conservation properties for certain field types. C1 [Tautges, Timothy J.; Caceres, Alvaro] Argonne Natl Lab, Argonne, IL 60439 USA. RP Tautges, TJ (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. EM tautges@mcs.anl.gov; acaceres@mcs.anl.gov NR 6 TC 2 Z9 2 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 DI 10.1088/1742-6596/180/1/012017 PG 5 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700018 ER PT S AU Tonks, MR Hansen, G Gaston, D Permann, C Millett, P Wolf, D AF Tonks, M. R. Hansen, G. Gaston, D. Permann, C. Millett, P. Wolf, D. BE Simon, H TI Fully-coupled engineering and mesoscale simulations of thermal conductivity in UO(2) fuel using an implicit multiscale approach SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB Though the thermal conductivity of solid UO(2) is well characterized, its value is sensitive to microstructure changes. In this study, we propose a two-way coupling of a mesoscale phase field irradiation model to an engineering scale, finite element calculation to capture the microstructure dependence of the conductivity. To achieve this, the engineering scale thermomechanics system is solved in a parallel, fully-coupled, fully-implicit manner using the preconditioned Jacobian-free Newton Krylov (JFNK) method. Within the JFNK function evaluation phase of the calculation, the microstructure-influenced thermal conductivity is calculated by the mesoscale model and passed back to the engineering scale calculation. Initial results illustrate quadratic nonlinear convergence and good parallel scalability. C1 [Tonks, M. R.; Hansen, G.; Gaston, D.; Permann, C.; Millett, P.; Wolf, D.] Idaho Natl Lab, Idaho Falls, ID 83415 USA. RP Tonks, MR (reprint author), Idaho Natl Lab, POB 1625, Idaho Falls, ID 83415 USA. OI Hansen, Glen/0000-0002-1786-9285 NR 7 TC 5 Z9 5 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012078 DI 10.1088/1742-6596/180/1/012078 PG 5 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700079 ER PT S AU Vary, JP Maris, P Ng, E Yang, C Sosonkina, M AF Vary, James P. Maris, Pieter Ng, Esmond Yang, Chao Sosonkina, Masha BE Simon, H TI Ab initio nuclear structure - the large sparse matrix eigenvalue problem SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID SHELL-MODEL AB The structure and reactions of light nuclei represent fundamental and formidable challenges for microscopic theory based on realistic strong interaction potentials. Several ab initio methods have now emerged that provide nearly exact solutions for some nuclear properties. The ab initio no core shell model (NCSM) and the no core full configuration (NCFC) method, frame this quantum many-particle problem as a large sparse matrix eigenvalue problem where one evaluates the Hamiltonian matrix in a basis space consisting of many-fermion Slater determinants and then solves for a set of the lowest eigenvalues and their associated eigenvectors. The resulting eigenvectors are employed to evaluate a set of experimental quantities to test the underlying potential. For fundamental problems of interest, the matrix dimension often exceeds 1010 and the number of nonzero matrix elements may saturate available storage on present-day leadership class facilities. We survey recent results and advances in solving this large sparse matrix eigenvalue problem. We also outline the challenges that lie ahead for achieving further breakthroughs in fundamental nuclear theory using these ab initio approaches. C1 [Vary, James P.; Maris, Pieter] Iowa State Univ, Dept Phys, Ames, IA 50011 USA. [Ng, Esmond; Yang, Chao] Lawrence Berkeley Natl Lab, Computat Res Div, Berkeley, CA 94720 USA. [Sosonkina, Masha] Lowa State Univ, Ames Lab, Scalable Comp Lab, Ames, IA 50011 USA. RP Vary, JP (reprint author), Iowa State Univ, Dept Phys, Ames, IA 50011 USA. EM jvary@iastate.edu FU DOE [DE-FC02-09ER41582, DE-FG02- 87ER40371]; DOE through the National Energy Research Supercomputer Center (NERSC) and through an INCITE; Argonne National Laboratory FX This work was supported in part by DOE grants DE-FC02-09ER41582 and DE-FG02- 87ER40371. Computational resources are provided by DOE through the National Energy Research Supercomputer Center (NERSC) and through an INCITE award (David Dean, PI) at Oak Ridge National Laboratory and Argonne National Laboratory. NR 23 TC 30 Z9 31 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012083 DI 10.1088/1742-6596/180/1/012083 PG 10 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700084 ER PT S AU Vay, JL Bruhwiler, DL Geddes, CGR Fawley, WM Martins, SF Cary, JR Cormier-Michel, E Cowan, B Fonseca, RA Furman, MA Lu, W Mori, WB Silva, LO AF Vay, J. -L. Bruhwiler, D. L. Geddes, C. G. R. Fawley, W. M. Martins, S. F. Cary, J. R. Cormier-Michel, E. Cowan, B. Fonseca, R. A. Furman, M. A. Lu, W. Mori, W. B. Silva, L. O. BE Simon, H TI Simulating relativistic beam and plasma systems using an optimal boosted frame. SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID CODE AB It was shown recently that it may be computationally advantageous to perform computer simulations in a Lorentz boosted frame for a certain class of systems. However, even if the computer model relies on a covariant set of equations, it was pointed out that algorithmic difficulties related to discretization errors may have to be overcome in order to take full advantage of the potential speedup. In this paper, we summarize the findings, the difficulties and their solutions, and review the applications of the technique that have been performed to date. C1 [Vay, J. -L.; Geddes, C. G. R.; Fawley, W. M.; Cormier-Michel, E.; Furman, M. A.] LBNL, Berkeley, CA 94720 USA. [Bruhwiler, D. L.; Cary, J. R.; Cowan, B.] Tech X Corp, Boulder, CO USA. [Martins, S. F.; Cary, J. R.] Univ Colorado, Dept Phys, Boulder, CO USA. [Fonseca, R. A.; Silva, L. O.] Inst Super Tecn, Inst Plasma & Fus Nucl, Lisbon, Portugal. [Lu, W.; Mori, W. B.] Univ Calif Los Angeles, Los Angeles, CA USA. RP Vay, JL (reprint author), LBNL, Berkeley, CA 94720 USA. EM jlvay@lbl.gov RI Silva, Luis/C-3169-2009; Fonseca, Ricardo/B-7680-2009; Lu, Wei/F-2504-2016 OI Silva, Luis/0000-0003-2906-924X; Fonseca, Ricardo/0000-0001-6342-6226; FU U.S. DOE [DE-AC02-05CH11231, DE-AC52-07NA27344, DE-FG03-92ER40727, DE-FC02-07ER41500, DE-FG02-03ER54721]; U.S.-LHC Accelerator Research Program (LARP); U.S. DOE SciDAC program; Fundacao Calouste Gulbenkian, FCT (Portugal) [SFRH/BD/35749/2007, PTDC/FIS/66823/2006]; European Community FP6 program (project EuroLeap) [028514] FX We are thankful to E. Esarey, B. A. Shadwick and C. B. Schroeder for insightful discussions, and to D. P. Grote for support with the Warp code. This work was supported by the U.S. DOE under contracts DE-AC02-05CH11231, DE-AC52-07NA27344, DE-FG03-92ER40727, DE-FC02-07ER41500, DE-FG02-03ER54721, the U.S.-LHC Accelerator Research Program (LARP), the U.S. DOE SciDAC program, the Fundacao Calouste Gulbenkian, FCT under grants SFRH/BD/35749/2007 and PTDC/FIS/66823/2006 (Portugal), and by the European Community FP6 program (project EuroLeap, contract #028514). This research used resources of NERSC, supported by the U.S. DOE under Contract No. DE-AC02-05CH11231. NR 26 TC 6 Z9 6 U1 1 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012006 DI 10.1088/1742-6596/180/1/012006 PG 5 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700007 ER PT S AU Veitzer, SA LeBrun, P Cary, JR Spentzouris, P Stoltz, PH Amundson, JF AF Veitzer, S. A. LeBrun, P. Cary, J. R. Spentzouris, P. Stoltz, P. H. Amundson, J. F. BE Simon, H TI Computation of electron cloud diagnostics and mitigation in the main injector SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB High-performance computations on Blue Gene/P at Argonne's Leadership Computing Facility have been used to determine phase shifts induced in injected RF diagnostics as a function of electron cloud density in the Main Injector. Inversion of the relationship between electron cloud parameters and induced phase shifts allows us to predict electron cloud density and evolution over many bunch periods. Long time-scale simulations using Blue Gene have allowed us to measure cloud evolution patterns under the influence of beam propagation with realistic physical parameterizations, such as elliptical beam pipe geometry, self-consistent electromagnetic fields, space charge, secondary electron emission, and the application of arbitrary external magnetic fields. Simultaneously, we are able to simulate the use of injected microwave diagnostic signals to measure electron cloud density, and the effectiveness of various mitigation techniques such as surface coating and the application of confining magnetic fields. These simulations provide a baseline for both RF electron cloud diagnostic design and accelerator fabrication in order to measure electron clouds and mitigate the adverse effects of such clouds on beam propagation. C1 [Veitzer, S. A.; Cary, J. R.; Stoltz, P. H.] Tech X Corp, 5621 Arapahoe Ave,Suite A, Boulder, CO 80303 USA. [LeBrun, P.; Spentzouris, P.; Amundson, J. F.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Veitzer, SA (reprint author), Tech X Corp, 5621 Arapahoe Ave,Suite A, Boulder, CO 80303 USA. EM veitzer@txcorp.com FU Department of Energy under Small Business Innovation Research [DE-FG02-08ER85042] FX Much of this work was performed under the auspices of the Department of Energy under Small Business Innovation Research Contract DE-FG02-08ER85042. The authors would like to acknowledge the hard work of the VORPAL development team: T. Austin, G. I. Bell, D. L. Bruhwiler, R. S. Busby, J. Carlsson, M. Carey, B. M. Cowan, D. A. Dimitrov, A. Hakim, J. Loverich, S. Mahalingam, P. Messmer, P. J. Mullowney, C. Nieter, K. Paul, C. Roark, S. W. Sides, N. D. Sizemore, D. N. Smithe, D. J. Wade-Stein, G. R. Werner, M. Wrobel, N. Xiang, C. D. Zhou. NR 7 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012007 DI 10.1088/1742-6596/180/1/012007 PG 5 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700008 ER PT S AU Wilde, M Raicu, I Espinosa, A Zhang, Z Clifford, B Hategan, M Kenny, S Iskra, K Beckman, P Foster, I AF Wilde, Michael Raicu, Ioan Espinosa, Allan Zhang, Zhao Clifford, Ben Hategan, Mihael Kenny, Sarah Iskra, Kamil Beckman, Pete Foster, Ian BE Simon, H TI Extreme-scale scripting: Opportunities for large task-parallel applications on petascale computers SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA AB Parallel scripting is a loosely-coupled programming model in which applications are composed of highly parallel scripts of program invocations that process and exchange data via files. We characterize here the applications that can benefit from parallel scripting on petascale-class machines, describe the mechanisms that make this feasible on such systems, and present results achieved with parallel scripts on currently available petascale computers. C1 [Wilde, Michael; Zhang, Zhao; Clifford, Ben; Hategan, Mihael; Kenny, Sarah; Iskra, Kamil; Beckman, Pete; Foster, Ian] Univ Chicago, Computat Inst, Chicago, IL 60637 USA. [Wilde, Michael; Zhang, Zhao; Clifford, Ben; Hategan, Mihael; Kenny, Sarah; Iskra, Kamil; Beckman, Pete; Foster, Ian] Univ Chicago, Argonne Natl Lab, Chicago, IL 60637 USA. [Wilde, Michael; Iskra, Kamil; Beckman, Pete; Foster, Ian] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. [Raicu, Ioan; Espinosa, Allan; Foster, Ian] Univ Chicago, Dept Comp Sci, Chicago, IL 60637 USA. RP Wilde, M (reprint author), Univ Chicago, Computat Inst, Chicago, IL 60637 USA. FU NSF [OCI-721939, PHY-636265]; NIH [DC08638, DA024304-02]; U.S. Dept. of Energy [DE-AC02-06CH11357]; NASA Ames Research Center GSRP [NNA06CB89H]; UChicago/Argonne Computation Institute FX This research is supported in part by NSF grants OCI-721939 and PHY-636265, NIH grants DC08638 and DA024304-02, U.S. Dept. of Energy under Contract DE-AC02-06CH11357, NASA Ames Research Center GSRP grant NNA06CB89H, and the UChicago/Argonne Computation Institute. NR 11 TC 1 Z9 1 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012046 DI 10.1088/1742-6596/180/1/012046 PG 5 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700047 ER PT S AU Woosley, SE Almgren, AS Aspden, AJ Bell, JB Kasen, D Kerstein, AR Ma, H Nonaka, A Zingale, M AF Woosley, S. E. Almgren, A. S. Aspden, A. J. Bell, J. B. Kasen, D. Kerstein, A. R. Ma, H. Nonaka, A. Zingale, M. BE Simon, H TI Type Ia Supernovae: Advances in Large Scale Simulation SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID TURBULENCE; MODEL AB There are two principal scientific objectives in the study of Type Ia supernovae first, a better understanding of these complex explosions from as near first principles as possible, and second, enabling the more accurate utilization of their emission to measure distances in cosmology. Both tasks lend themselves to large scale numerical simulation, yet take us beyond the current frontiers in astrophysics, combustion science, and radiation transport. Their study requires novel approaches and the creation of new, highly scalable codes. C1 [Woosley, S. E.; Kasen, D.; Ma, H.] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA. [Almgren, A. S.; Aspden, A. J.; Bell, J. B.; Nonaka, A.] Lawrence Berkeley Natl Lab, Ctr Computat Sci & Engn, Berkeley, CA 94720 USA. [Kerstein, A. R.] Sandia Natl Labs, Combust Res Facil, Livermore, CA USA. [Zingale, M.] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA. RP Woosley, SE (reprint author), Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA. EM woosley@ucolick.org RI Aspden, Andy/A-7391-2017; OI Aspden, Andy/0000-0002-2970-4824; Zingale, Michael/0000-0001-8401-030X FU SciDAC Program [DE-AC02-05CH11231]; SciDAC [DE-FC02-06ER41438]; Sandia Corporation; Lockheed Martin Company for the DOE [DEAC04-94AL85000]; DOE/Office of Nuclear Physics Outstanding Junior Investigator award [DE-FG02-06ER41448]; Office of Science of the DOE [DE-AC05-00OR22725]; DE-AC05-00OR22725), and the Franklin computer at the National Energy Research Scientific Computing Center FX Research at LBNL was supported by the SciDAC Program under contract No. DE-AC02-05CH11231. A. Aspden was also supported by a Seaborg Fellowship. Work at UCSC was also supported by SciDAC under contract DE-FC02-06ER41438. At Sandia, research was supported by the Sandia Corporation, a Lockheed Martin Company, for the DOE under contract DEAC04-94AL85000. M. Zingale was supported by a DOE/Office of Nuclear Physics Outstanding Junior Investigator award, grant No. DE-FG02-06ER41448, to Stony Brook. This research used resources provided by an INCITE award at the National Center for Computational Sciences at Oak Ridge National Laboratory, which is supported by the Office of Science of the DOE (DE-AC05-00OR22725), and the Franklin computer at the National Energy Research Scientific Computing Center. Additional computing resources were provided on the ATLAS Linux Cluster at LLNL as part of a Grand Challenge Project. NR 16 TC 1 Z9 1 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012023 DI 10.1088/1742-6596/180/1/012023 PG 6 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700024 ER PT S AU Wu, K Ahern, S Bethel, EW Chen, J Childs, H Cormier-Michel, E Geddes, C Gu, J Hagen, H Hamann, B Koegler, W Lauret, J Meredith, J Messmer, P Otoo, E Perevoztchikov, V Poskanzer, A Prabhat Rubel, O Shoshani, A Sim, A Stockinger, K Weber, G Zhang, WM AF Wu, K. Ahern, S. Bethel, E. W. Chen, J. Childs, H. Cormier-Michel, E. Geddes, C. Gu, J. Hagen, H. Hamann, B. Koegler, W. Lauret, J. Meredith, J. Messmer, P. Otoo, E. Perevoztchikov, V. Poskanzer, A. Prabhat Ruebel, O. Shoshani, A. Sim, A. Stockinger, K. Weber, G. Zhang, W-M BE Simon, H TI FastBit: interactively searching massive data SO SCIDAC 2009: SCIENTIFIC DISCOVERY THROUGH ADVANCED COMPUTING SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 5th Annual Conference of Scientific Discovery through Advanced Computing (SciDAC 2009) CY JUN 14-18, 2009 CL San Diego, CA ID BITMAP INDEXES AB As scientific instruments and computer simulations produce more and more data, the task of locating the essential information to gain insight becomes increasingly difficult. Fast Bit is an efficient software tool to address this challenge. In this article, we present a summary of the key underlying technologies, namely bitmap compression, encoding, and binning. Together these techniques enable Fast Bit to answer structured (SQL) queries orders of magnitude faster than popular database systems. To illustrate how Fast Bit is used in applications, we present three examples involving a high-energy physics experiment, a combustion simulation, and an accelerator simulation. In each case, Fast Bit significantly reduces the response time and enables interactive exploration on terabytes of data. C1 [Wu, K.; Bethel, E. W.; Cormier-Michel, E.; Geddes, C.; Gu, J.; Hamann, B.; Otoo, E.; Poskanzer, A.; Prabhat; Ruebel, O.; Shoshani, A.; Sim, A.; Stockinger, K.; Weber, G.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Ahern, S.; Meredith, J.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Bethel, E. W.; Hagen, H.; Ruebel, O.] Univ Calif Davis, Davis, CA 95616 USA. [Chen, J.; Koegler, W.] Sandia Natl Labs, Livermore, CA 94551 USA. [Childs, H.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Hagen, H.] Tech Univ Kaiserslautern, Kaiserslautern, Germany. [Lauret, J.; Perevoztchikov, V.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Messmer, P.] Tech X Corp, Boulder, CO 80303 USA. [Zhang, W-M] Kent State Univ, Kent, OH 44240 USA. [Stockinger, K.] Credit Suisse, Zurich, Switzerland. RP Wu, K (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. OI Weber, Gunther/0000-0002-1794-1398 FU Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231, DEAC02- 05CH11231]; Scientific Discovery through Advanced Computing (SciDAC) program's Scientific Data Management (SDM) center; Visualization and Analytics Center for Enabling Technologies (VACET); COMPASS project FX This work was supported in part by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231, the Scientific Discovery through Advanced Computing (SciDAC) programs Scientific Data Management (SDM) center, Visualization and Analytics Center for Enabling Technologies (VACET) and the COMPASS project. This research used resources of the National Energy Research Scientific Computing Center (NERSC), which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DEAC02- 05CH11231. The authors also gratefully acknowledge FastBit users for their efforts to test and debug the software package, and to find new and creative ways of using the software. NR 43 TC 16 Z9 16 U1 1 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 180 AR UNSP 012053 DI 10.1088/1742-6596/180/1/012053 PG 10 WC Computer Science, Interdisciplinary Applications; Physics, Multidisciplinary SC Computer Science; Physics GA BQO16 UT WOS:000281436700054 ER PT J AU Carelli, M Conway, L Dzodzo, M Maioli, A Oriani, L Storrick, G Petrovic, B Achilli, A Cattadori, G Congiu, C Ferri, R Ricotti, M Papini, D Bianchi, F Meloni, P Monti, S Berra, F Grgic, D Yoder, G Alemberti, A AF Carelli, Mario Conway, Lawrence Dzodzo, Milorad Maioli, Andrea Oriani, Luca Storrick, Gary Petrovic, Bojan Achilli, Andrea Cattadori, Gustavo Congiu, Cinzia Ferri, Roberta Ricotti, Marco Papini, Davide Bianchi, Fosco Meloni, Paride Monti, Stefano Berra, Fabio Grgic, Davor Yoder, Graydon Alemberti, Alessandro TI The SPES3 Experimental Facility Design for the IRIS Reactor Simulation SO SCIENCE AND TECHNOLOGY OF NUCLEAR INSTALLATIONS LA English DT Article AB IRIS is an advanced integral pressurized water reactor, developed by an international consortium led by Westinghouse. The licensing process requires the execution of integral and separate effect tests on a properly scaled reactor simulator for reactor concept, safety system verification, and code assessment. Within the framework of an Italian R&D program on Nuclear Fission, managed by ENEA and supported by the Ministry of Economic Development, the SPES3 facility is under design and will be built and operated at SIET laboratories. SPES3 simulates the primary, secondary, and containment systems of IRIS with 1 : 100 volume scale, full elevation, and prototypical thermal-hydraulic conditions. The simulation of the facility with the RELAP5 code and the execution of the tests will provide a reliable tool for data extrapolation and safety analyses of the final IRIS design. This paper summarises the main design steps of the SPES3 integral test facility, underlying choices and phases that lead to the final design. Copyright (C) 2009 Mario Carelli et al. C1 [Achilli, Andrea; Cattadori, Gustavo; Congiu, Cinzia; Ferri, Roberta] SIET SpA, I-29100 Piacenza, Italy. [Carelli, Mario; Conway, Lawrence; Dzodzo, Milorad; Maioli, Andrea; Oriani, Luca; Storrick, Gary] Westinghouse Sci & Technol Ctr, Pittsburgh, PA 15235 USA. [Petrovic, Bojan] Georgia Inst Technol, Nucl & Radiol Engn Med Phys Programs, George W Woodruff Sch, Atlanta, GA 30332 USA. [Ricotti, Marco; Papini, Davide] Politecn Milan, Dept Energy, CeSNEF Nucl Engn Div, I-20156 Milan, Italy. [Bianchi, Fosco; Meloni, Paride; Monti, Stefano] ENEA, I-40129 Bologna, Italy. [Berra, Fabio] Mangiarotti Nucl, I-20126 Milan, Italy. [Grgic, Davor] Univ Zagreb, FER, Zagreb 10000, Croatia. [Yoder, Graydon] ORNL, Oak Ridge, TN 37831 USA. [Alemberti, Alessandro] Ansaldo Nucl, I-16161 Genoa, Italy. RP Ferri, R (reprint author), SIET SpA, Via Nino Bixio 27, I-29100 Piacenza, Italy. EM ferri@siet.it RI Dzodzo, Milorad/J-6563-2014; OI Dzodzo, Milorad/0000-0003-4372-0529; ricotti, marco e./0000-0003-3914-4370 NR 8 TC 8 Z9 8 U1 0 U2 7 PU HINDAWI PUBLISHING CORPORATION PI NEW YORK PA 410 PARK AVENUE, 15TH FLOOR, #287 PMB, NEW YORK, NY 10022 USA SN 1687-6075 J9 SCI TECHNOL NUCL INS JI Sci. Technol. Nucl. Install. PY 2009 AR 579430 DI 10.1155/2009/579430 PG 12 WC Nuclear Science & Technology SC Nuclear Science & Technology GA V20EI UT WOS:000208122900001 ER PT J AU Cheng, LY Wei, TYC AF Cheng, Lap-Yan Wei, Thomas Y. C. TI Decay Heat Removal in GEN IV Gas-Cooled Fast Reactors SO SCIENCE AND TECHNOLOGY OF NUCLEAR INSTALLATIONS LA English DT Article AB The safety goal of the current designs of advanced high-temperature thermal gas-cooled reactors (HTRs) is that no core meltdown would occur in a depressurization event with a combination of concurrent safety system failures. This study focused on the analysis of passive decay heat removal (DHR) in a GEN IV direct-cycle gas-cooled fast reactor (GFR) which is based on the technology developments of the HTRs. Given the different criteria and design characteristics of the GFR, an approach different from that taken for the HTRs for passive DHR would have to be explored. Different design options based on maintaining core flow were evaluated by performing transient analysis of a depressurization accident using the system code RELAP5-3D. The study also reviewed the conceptual design of autonomous systems for shutdown decay heat removal and recommends that future work in this area should be focused on the potential for Brayton cycle DHRs. Copyright (C) 2009 L.-Y. Cheng and T.Y.C. Wei. C1 [Cheng, Lap-Yan] Brookhaven Natl Lab, Energy Sci & Technol Dept, Upton, NY 11973 USA. [Wei, Thomas Y. C.] Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA. RP Cheng, LY (reprint author), Brookhaven Natl Lab, Energy Sci & Technol Dept, POB 5000, Upton, NY 11973 USA. EM cheng@bnl.gov FU U.S. Department of Energy [DE-AC02-98CH10886, W-31-109-Eng-38] FX This manuscript has been authored by employees of Brookhaven Science Associates, LLC under Contract no. DE-AC02-98CH10886 with the U.S. Department of Energy. The publisher by accepting the manuscript for publication acknowledges that the United States Government retains a nonexclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The ANL work was supported by the U.S. Department of Energy under Contract numbers W-31-109-Eng-38 and DE-AC02-98CH10886. This material is based upon work supported by the U.S. Department of Energy under the INERI and GEN IV programs. NR 15 TC 5 Z9 5 U1 1 U2 4 PU HINDAWI PUBLISHING CORPORATION PI NEW YORK PA 410 PARK AVENUE, 15TH FLOOR, #287 PMB, NEW YORK, NY 10022 USA SN 1687-6075 J9 SCI TECHNOL NUCL INS JI Sci. Technol. Nucl. Install. PY 2009 AR 797461 DI 10.1155/2009/797461 PG 13 WC Nuclear Science & Technology SC Nuclear Science & Technology GA V20ES UT WOS:000208123900001 ER PT J AU Alivisatos, AP Hullar, TE AF Alivisatos, A. Paul Hullar, Timothy E. TI How does solar power work? SO SCIENTIFIC AMERICAN LA English DT Letter C1 [Alivisatos, A. Paul] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Hullar, Timothy E.] Washington Univ, Sch Med, St Louis, MO USA. RP Alivisatos, AP (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RI Alivisatos , Paul /N-8863-2015 OI Alivisatos , Paul /0000-0001-6895-9048 NR 0 TC 0 Z9 0 U1 1 U2 5 PU SCI AMERICAN INC PI NEW YORK PA 415 MADISON AVE, NEW YORK, NY 10017 USA SN 0036-8733 J9 SCI AM JI Sci.Am. PD JAN PY 2009 VL 300 IS 1 BP 108 EP 108 PG 1 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 385LR UT WOS:000261816200039 PM 19186759 ER PT S AU Joslyn, C Burke, J Critchlow, T Hengartner, N Hogan, E AF Joslyn, Cliff Burke, John Critchlow, Terence Hengartner, Nick Hogan, Emilie BE Winslett, M TI View Discovery in OLAP Databases through Statistical Combinatorial Optimization SO SCIENTIFIC AND STATISTICAL DATABASE MANAGEMENT, PROCEEDINGS SE Lecture Notes in Computer Science LA English DT Proceedings Paper CT 21st International Conference on Scientific and Statistical Database Management CY JUN 02-04, 2009 CL New Orleans, LA SP LATG, Diamond Data Syst, Sun Microsyst, NOVACES, Univ New Orleans ID DATA CUBES AB The capability of OLAP database software systems to handle data complexity comes at a high price for analysts, presenting them a combinatorially vast space of views of a relational database. We respond to the need to deploy technologies sufficient to allow users to guide themselves to areas of local structure by casting the space of "views" of an OLAP database as a combinatorial object of all projections and subsets. and "view discovery" as an search process over that lattice. We equip the view lattice with statistical information theoretical measures sufficient to support a combinatorial optimization process. We outline "hop-chaining" as a particular view discovery algorithm over this object, wherein users are guided across a permutation of the dimensions by searching for successive two-dimensional views, pushing seen dimensions into an increasingly large background filter in a "spiraling" search process. We illustrate this work in the context of data cubes recording summary statistics for radiation portal monitors at US ports. C1 [Joslyn, Cliff; Burke, John; Critchlow, Terence; Hogan, Emilie] Pacific NW Natl Lab, Richland, WA 99352 USA. [Hengartner, Nick] Los Alamos Natl Lab, Los Alamos, NM USA. [Hogan, Emilie] Rutgers State Univ, Dept Math, Piscataway, NJ 08855 USA. RP Joslyn, C (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. FU U.S. Department of Homeland Security [2007-ST-104-000006]; Judith Cohn at the Los Alamos National Laboratory; DHS/ST; DHS/ICE; DHS/CBP FX This work is supported in part by the U.S. Department of Homeland Security under Grant Award 2007-ST-104-000006. The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Department of Homeland Security. We are grateful for the support of Judith Cohn at the Los Alamos National Laboratory; David Gillen, Eric Stephan, Bryan Olsen, and Elena Peterson at the Pacific Northwest National Laboratory; Matt Damante and Robert Fernandez at the Lawrence Livermore National Laboratory; and our sponsors and colleagues at DHS/S&T, DHS/ICE, and DHS/CBP. NR 28 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 978-3-642-02278-4 J9 LECT NOTES COMPUT SC PY 2009 VL 5566 BP 37 EP + PG 3 WC Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA BKL72 UT WOS:000268444900003 ER PT S AU Otoo, E Rotem, D Tsao, SC AF Otoo, Ekow Rotem, Doron Tsao, Shih-Chiang BE Winslett, M TI Energy Smart Management of Scientific Data SO SCIENTIFIC AND STATISTICAL DATABASE MANAGEMENT, PROCEEDINGS SE Lecture Notes in Computer Science LA English DT Proceedings Paper CT 21st International Conference on Scientific and Statistical Database Management CY JUN 02-04, 2009 CL New Orleans, LA SP LATG, Diamond Data Syst, Sun Microsyst, NOVACES, Univ New Orleans DE Disk storage; Power management; File allocation; Scientific workload; Performance guaranttee ID SYSTEMS AB Scientific data centers comprised of high-powered computing equipment and large capacity disk storage systems consume considerable amount of energy. Dynamic power management techniques (DPM) are commonly used for saving energy in disk systems. These involve powering down disks that exhibit long idle periods and placing them in standby mode. A file request from a disk in standby mode Will incur both energy and performance penalties as it takes energy (and time) to spin up the disk before it can serve a file. For this reason, DPM has to make decisions as to when to transition the disk into standby mode such that the energy saved is greater than the energy needed to spin it up again and the performance penalty is tolerable. The length of the idle period until the DPM decides to power down a disk is called idleness threshold. In this paper, we study both analytically and experimentally dynamic power management techniques that save energy subject to performance constraints on file access costs. Based on observed workloads of scientific applications and disk characteristics, we provide a methodology for determining file assignment to disks and computing idleness thresholds that result in significant improvements to the energy saved by existing DPM solutions while meeting response time constraints. We validate our methods with simulations that use traces taken from scientific applications. C1 [Otoo, Ekow; Rotem, Doron; Tsao, Shih-Chiang] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Otoo, E (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA. NR 26 TC 1 Z9 1 U1 1 U2 3 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 978-3-642-02278-4 J9 LECT NOTES COMPUT SC PY 2009 VL 5566 BP 92 EP 109 PG 18 WC Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA BKL72 UT WOS:000268444900007 ER PT S AU Gosink, LJ Wu, KS Bethel, EW Owens, JD Joy, KI AF Gosink, Luke J. Wu, Kesheng Bethel, E. Wes Owens, John D. Joy, Kenneth I. BE Winslett, M TI Data Parallel Bin-Based Indexing for Answering Queries on Multi-core Architectures SO SCIENTIFIC AND STATISTICAL DATABASE MANAGEMENT, PROCEEDINGS SE Lecture Notes in Computer Science LA English DT Proceedings Paper CT 21st International Conference on Scientific and Statistical Database Management CY JUN 02-04, 2009 CL New Orleans, LA SP LATG, Diamond Data Syst, Sun Microsyst, NOVACES, Univ New Orleans ID BITMAP INDEXES; VISUALIZATION AB The multi-core trend in CPUs and general purpose graphics processing units (GPUs) offers new opportunities for the database community. The increase of cores at exponential rates is likely to affect virtually every server and client in the coming decade, and presents database management systems with a huge, compelling disruption that will radically change how processing is done. This paper presents a new parallel indexing data structure for answering queries that takes full advantage of the increasing thread-level parallelism emerging in multi-core architectures. In our approach, our Data Parallel Bin-based Index Strategy (DP-BIS) first bins the base data, and then partitions and stores the values in each bin as a separate, bin-based data cluster. In answering a query, the procedures for examining the bin numbers and the bin-based data clusters offer the maximum possible level of concurrency; each record is evaluated by a single thread and all threads are processed simultaneously in parallel. We implement and demonstrate the effectiveness of DP-BIS on two multicore architectures: a multi-core CPU and a GPU. The concurrency afforded by DP-BIS allows us to fully utilize the thread-level parallelism provided by each architecture-for example. our GPU-based DP-BIS implementation simultaneously evaluates over 12,000 records with an equivalent number of concurrently executing threads. In comparing DP-BIS's performance across these architectures, we show that the GPU-based DP-BIS implementation requires significantly less computation time to answer a query than the CPU-based implementation. We also demonstrate in our analysis that DP-BIS provides better overall performance than the commonly utilized CPU and GPU-based projection index. Finally, due to data encoding, we show that DP-BIS accesses significantly smaller amounts of data than index strategies that operate solely on a column's base data; this smaller data footprint is critical for parallel processors that possess limited memory resources (e.g. GPUs). C1 [Gosink, Luke J.; Owens, John D.; Joy, Kenneth I.] Univ Calif Davis, IDAV, 1 Shields Ave, Davis, CA 95616 USA. [Wu, Kesheng] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Sci Management Grp, Berkeley, CA 94720 USA. [Bethel, E. Wes] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Visual Grp, Berkeley, CA 94720 USA. RP Gosink, LJ (reprint author), Univ Calif Davis, IDAV, 1 Shields Ave, Davis, CA 95616 USA. EM ljgosink@ucdavis.edu; kwu@lbl.gov; ewbethel@lbl.gov; jowens@ece.ucdavis.edu; joy@ucdavis.edu RI Owens, John/A-1256-2012 OI Owens, John/0000-0001-6582-8237 FU Lawrence Berkeley National Laboratories; Office of Science at the U.S. Department of Energy [DE-AC02-05CH11231, DE-FC02-06-ER25777]; Scientific Discovery through Advanced Computing (SciDAC); Visualization and Analytics Center for Enabling Technologies (VACET); Institute for Ultra-Scale Visualization; Scientific Data Management Center FX This work was supported by Lawrence Berkeley National Laboratories, and by the Office of Science at the U.S. Department of Energy under Contracts No. DE-AC02-05CH11231 and DE-FC02-06-ER25777 through the Scientific Discovery through Advanced Computing (SciDAC) programs Visualization and Analytics Center for Enabling Technologies (VACET), the Institute for Ultra-Scale Visualization, and the Scientific Data Management Center. NR 40 TC 2 Z9 3 U1 0 U2 7 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 978-3-642-02278-4 J9 LECT NOTES COMPUT SC PY 2009 VL 5566 BP 110 EP + PG 4 WC Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA BKL72 UT WOS:000268444900008 ER PT S AU Sinha, RR Winslett, M Wu, KS AF Sinha, Rishi Rakesh Winslett, Marianne Wu, Kesheng BE Winslett, M TI Finding Regions of Interest in Large Scientific Datasets SO SCIENTIFIC AND STATISTICAL DATABASE MANAGEMENT, PROCEEDINGS SE Lecture Notes in Computer Science LA English DT Proceedings Paper CT 21st International Conference on Scientific and Statistical Database Management CY JUN 02-04, 2009 CL New Orleans, LA SP LATG, Diamond Data Syst, Sun Microsyst, NOVACES, Univ New Orleans ID BITMAP INDEXES AB Consider a scientific range query, such as find all places in Africa where yesterday the temperature was over 35 degrees and it rained. In theory, one can answer such queries by returning all geographic points that satisfy the query condition. However, in practice, users do not find this low-level answer very useful; instead they require the points to be consolidated into regions, i.e., sets of points that all satisfy the query conditions and are adjacent in the underlying mesh. In this paper, we show that when a high-quality index is used to find the points and a good traditional connected component labeling algorithm is used to build the regions, the cost of consolidating the points into regions dominates range query response time. We then show how to find query result points and consolidate them into regions in expected time that is sublinear in the number of result points. This seemingly miraculous speedup comes from a point lookup phase that uses bitmap indexes and produces a compressed bitmap, as the intermediate query result, followed by a region consolidation phase that operates directly on the intermediate query result bitmap, and exploits the spatial properties of the underlying mesh to greatly reduce the cost of consolidating the result points into regions. Our experiments with real-world scientific data demonstrate that in practice, our approach to region consolidation is over 10 times faster than a traditional connected component algorithm. C1 [Sinha, Rishi Rakesh] Microsoft Corp, Redmond, WA 98052 USA. [Winslett, Marianne] Univ Illinois, Dept Comp Sci, Chicago, IL 60680 USA. [Wu, Kesheng] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Sinha, RR (reprint author), Microsoft Corp, Redmond, WA 98052 USA. NR 16 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 978-3-642-02278-4 J9 LECT NOTES COMPUT SC PY 2009 VL 5566 BP 130 EP + PG 3 WC Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA BKL72 UT WOS:000268444900009 ER PT S AU Mouallem, P Barreto, R Klasky, S Podhorszki, N Vouk, M AF Mouallem, Pierre Barreto, Roselyne Klasky, Scott Podhorszki, Norbert Vouk, Mladen BE Winslett, M TI Tracking Files in the Kepler Provenance Framework SO SCIENTIFIC AND STATISTICAL DATABASE MANAGEMENT, PROCEEDINGS SE Lecture Notes in Computer Science LA English DT Proceedings Paper CT 21st International Conference on Scientific and Statistical Database Management CY JUN 02-04, 2009 CL New Orleans, LA SP LATG, Diamond Data Syst, Sun Microsyst, NOVACES, Univ New Orleans DE Data Tracking; Data Provenance; Scientific Data Management; Scientific Workflows ID SCIENTIFIC WORKFLOWS; DATA-MANAGEMENT; MODEL AB Workflow Management Systems (WFMS), such as Kepler, are proving to be an important tool in scientific problem solving. They can automate and manage complex processes and huge amounts of data produced by petascale simulations. Typically, the produced data need to be properly visualized and analyzed by scientists in order to achieve the desired scientific goals. Both run-time and post analysis may benefit from, even require, additional meta-data - provenance information. One of the challenges in this context is the tracking of the data files that can be produced in very large numbers during stages of the workflow, such as visualizations. The Kepler provenance framework collects all or part of the raw information flowing through the workflow graph. This information then needs to be further parsed to extract meta-data of interest. This can be done through add-on tools and algorithms. We show how to automate tracking specific information such as data files locations. C1 [Mouallem, Pierre; Vouk, Mladen] North Carolina State Univ, 890 Oval Dr, Raleigh, NC 27695 USA. [Barreto, Roselyne; Klasky, Scott; Podhorszki, Norbert] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Mouallem, P (reprint author), North Carolina State Univ, 890 Oval Dr, Raleigh, NC 27695 USA. EM pmouall@ncsu.edu; barreto@ornl.gov; klasky@ornl.gov; pnorbert@ornl.gov; vouk@ncsu.edu FU DOE [DE-FC02-ER25809]; IBM Shared University Research program. FX We would like to thank our colleagues in the SDM center for useful input, discussion and interactions, Ilkay Altintas, Daniel Crawl from SDSC, and Meiyappan Nagappan from NCSU. This research funded in part by the DOE grant DE-FC02-ER25809 and by the IBM Shared University Research program. NR 21 TC 4 Z9 4 U1 0 U2 3 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 978-3-642-02278-4 J9 LECT NOTES COMPUT SC PY 2009 VL 5566 BP 273 EP + PG 3 WC Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA BKL72 UT WOS:000268444900020 ER PT S AU Swift, PN Knowles, K McNeish, J Hansen, CW Howard, RL MacKinnon, R Sevougian, SD AF Swift, Peter N. Knowles, Kathryn McNeish, Jerry Hansen, Clifford W. Howard, Robert L. MacKinnon, Robert Sevougian, S. David BE Hyatt, NC Pickett, DA Rebak, RB TI Long-Term Performance of the Proposed Yucca Mountain Repository, USA SO SCIENTIFIC BASIS FOR NUCLEAR WASTE MANAGEMENT XXXII SE Materials Research Society Symposium Proceedings LA English DT Proceedings Paper CT 32nd Symposium on Scientific Basis for Nuclear Waste Management held at the 2008 MRS Fall Meeting CY DEC 01-05, 2008 CL Boston, MA SP Mat Res Soc AB This paper summarizes the historical development of the United States Department of Energy's (DOE's) 2008 performance assessment for the proposed high-level radioactive waste repository at Yucca Mountain, Nevada, and explains how the methods and results meet regulatory requirements specified by the United States Nuclear Regulatory Commission (NRC) and the United States Environmental Protection Agency (EPA). Topics covered include (i) screening of features, events and processes, (ii) development of scenario classes, (iii) descriptions of barrier capability, and (iv) compliance with applicable quantitative standards for individual protection, individual protection following human intrusion, and ground water protection. C1 [Swift, Peter N.; Knowles, Kathryn; McNeish, Jerry; Hansen, Clifford W.; MacKinnon, Robert; Sevougian, S. David] Sandia Natl Labs, Dept Energy, Off Civilian Radioact Waste Management Lead, Lab Repository Syst, Las Vegas, NV 89144 USA. RP Swift, PN (reprint author), Sandia Natl Labs, Dept Energy, Off Civilian Radioact Waste Management Lead, Lab Repository Syst, 1180 N Town Ctr Dr,Mail Stop LL423, Las Vegas, NV 89144 USA. NR 26 TC 3 Z9 3 U1 0 U2 2 PU MATERIALS RESEARCH SOCIETY PI WARRENDALE PA 506 KEYSTONE DRIVE, WARRENDALE, PA 15088-7563 USA SN 0272-9172 BN 978-1-60511-096-7 J9 MATER RES SOC SYMP P PY 2009 VL 1124 BP 3 EP 14 PG 12 WC Materials Science, Multidisciplinary; Physics, Nuclear SC Materials Science; Physics GA BLR79 UT WOS:000270898900001 ER PT S AU Gombert, D Carter, J Ebert, B Piet, S Trickel, T Vienna, J AF Gombert, Dirk Carter, Joe Ebert, Bill Piet, Steve Trickel, Tim Vienna, John BE Hyatt, NC Pickett, DA Rebak, RB TI A Trade Study for Waste Concepts to Minimize HLW Volume SO SCIENTIFIC BASIS FOR NUCLEAR WASTE MANAGEMENT XXXII SE Materials Research Society Symposium Proceedings LA English DT Proceedings Paper CT 32nd Symposium on Scientific Basis for Nuclear Waste Management held at the 2008 MRS Fall Meeting CY DEC 01-05, 2008 CL Boston, MA SP Mat Res Soc AB Advanced nuclear fuel reprocessing can partition wastes into groups of common chemistry. This enables new waste management strategies not possible with the plutonium, uranium extraction (PUREX) process alone. Combining all of the metallic fission products in an alloy and the balance as oxides in glass minimizes high level waste (HLW) volume. Implementing a waste management strategy using state-of-the-art combined waste forms and storage to allow radioactive decay and heat dissipation prior to placement in a repository makes it possible to place almost 10x the HLW equivalent of spent nuclear fuel (SNF) in the same repository space. However, using generic costs based on preliminary studies for waste stabilization facilities and separations modules, this analysis shows that combining the non-actinide wastes and using only one glass waste form is the most cost-effective. C1 [Gombert, Dirk; Piet, Steve] Idaho Natl Lab, Idaho Falls, ID 83415 USA. RP Gombert, D (reprint author), Idaho Natl Lab, Idaho Falls, ID 83415 USA. NR 7 TC 2 Z9 2 U1 0 U2 0 PU MATERIALS RESEARCH SOCIETY PI WARRENDALE PA 506 KEYSTONE DRIVE, WARRENDALE, PA 15088-7563 USA SN 0272-9172 BN 978-1-60511-096-7 J9 MATER RES SOC SYMP P PY 2009 VL 1124 BP 53 EP 64 PG 12 WC Materials Science, Multidisciplinary; Physics, Nuclear SC Materials Science; Physics GA BLR79 UT WOS:000270898900005 ER PT S AU Deng, HR Xiong, YL Nemer, M Johnsen, S AF Deng, Haoran Xiong, Yongliang Nemer, Martin Johnsen, Shelly BE Hyatt, NC Pickett, DA Rebak, RB TI Experimental Work Conducted on MgO Characterization and Hydration SO SCIENTIFIC BASIS FOR NUCLEAR WASTE MANAGEMENT XXXII SE Materials Research Society Symposium Proceedings LA English DT Proceedings Paper CT 32nd Symposium on Scientific Basis for Nuclear Waste Management held at the 2008 MRS Fall Meeting CY DEC 01-05, 2008 CL Boston, MA SP Mat Res Soc ID KINETICS AB Magnesium oxide (MgO) is the only engineered barrier certified by the EPA for emplacement in the Waste Isolation Pilot Plant (WIPP), a U.S. Department of Energy repository for transuranic waste. MgO will reduce actinide solubilities by sequestering CO(2) generated by the biodegradation of cellulosic, plastic, and rubber materials. Demonstration of the effectiveness of MgO is essential to meet the U.S Environmental Protection Agency's requirement for multiple natural and engineered barriers. In the past, a series of experiments was conducted at Sandia National Laboratories to verify the efficacy of Premier Chemicals LLC (Premier) MgO as a chemical-control agent in the WIPP. Since December 2004, Premier MgO is no longer available for emplacement in the WIPP. Martin Marietta Magnesia Specialties LLC is the new MgO supplier. MgO characterization, including chemical, mineralogic, and reactivity analysis, has been performed to address uncertainties concerning the amount of reactive constituents in Martin Marietta MgO. Characterization results of Premier MgO will be reported for comparison. Particle size, solid-to-liquid ratio, and stir speed could affect the rate of carbonation of MgO slurries. Thus, it's reasonable to hypothesize that these factors will also affect the rate of hydration. Accelerated MgO hydration experiments were carried out at two or three levels for each of the above factors in deionized water at 70 degrees C. The Minitab statistical software package was used to design a fractional-factorial experimental matrix and analyze the test results. We also fitted the accelerated inundated hydration data to four different kinetic models and calculated the hydration rates. As a result of this study we have determined that different mechanisms may be important for different particle sizes, surface control for large particles and diffusion for small particles. C1 [Deng, Haoran; Xiong, Yongliang; Johnsen, Shelly] Sandia Natl Labs, Carlsbad Programs Grp, Repository Performance Dept 6712, Carlsbad, NM 88220 USA. RP Deng, HR (reprint author), Sandia Natl Labs, Carlsbad Programs Grp, Repository Performance Dept 6712, Carlsbad, NM 88220 USA. NR 10 TC 0 Z9 0 U1 0 U2 2 PU MATERIALS RESEARCH SOCIETY PI WARRENDALE PA 506 KEYSTONE DRIVE, WARRENDALE, PA 15088-7563 USA SN 0272-9172 BN 978-1-60511-096-7 J9 MATER RES SOC SYMP P PY 2009 VL 1124 BP 271 EP 276 PG 6 WC Materials Science, Multidisciplinary; Physics, Nuclear SC Materials Science; Physics GA BLR79 UT WOS:000270898900034 ER PT S AU Farmer, J AF Farmer, Joseph BE Hyatt, NC Pickett, DA Rebak, RB TI A Comparison of the Corrosion Resistance of Iron-Based Amorphous Metals and Austenitic Alloys in Synthetic Brines at Elevated Temperature SO SCIENTIFIC BASIS FOR NUCLEAR WASTE MANAGEMENT XXXII SE Materials Research Society Symposium Proceedings LA English DT Proceedings Paper CT 32nd Symposium on Scientific Basis for Nuclear Waste Management held at the 2008 MRS Fall Meeting CY DEC 01-05, 2008 CL Boston, MA SP Mat Res Soc ID COATINGS; FE49.7CR17.7MN1.9MO7.4W1.6B15.2C3.8SI2.4; BEHAVIOR; GLASSES AB Several hard, corrosion-resistant and neutron-absorbing iron-based amorphous alloys have now been developed that can be applied as thermal spray coatings. These new alloys include relatively high concentrations of Cr, Mo, and W for enhanced corrosion resistance, and substantial B to enable both glass formation and neutron absorption. The corrosion resistances of these novel alloys have been compared to that of several austenitic alloys in a broad range of synthetic brines, with and without nitrate inhibitor, at elevated temperature. Linear polarization and electrochemical impedance spectroscopy have been used for in situ measurement of corrosion rates for prolonged periods of time, while scanning electron microscopy (SEM) and energy dispersive analysis of X-rays (EDAX) have been used for ex situ characterization of samples at the end of tests. The application of these new coatings for the protection of spent nuclear fuel storage systems, equipment in nuclear service, steel-reinforced concrete will be discussed. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Farmer, J (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 22 TC 0 Z9 0 U1 0 U2 2 PU MATERIALS RESEARCH SOCIETY PI WARRENDALE PA 506 KEYSTONE DRIVE, WARRENDALE, PA 15088-7563 USA SN 0272-9172 BN 978-1-60511-096-7 J9 MATER RES SOC SYMP P PY 2009 VL 1124 BP 447 EP 453 PG 7 WC Materials Science, Multidisciplinary; Physics, Nuclear SC Materials Science; Physics GA BLR79 UT WOS:000270898900060 ER PT S AU Buck, EC Wittman, RS AF Buck, Edgar C. Wittman, Rick S. BE Hyatt, NC Pickett, DA Rebak, RB TI The Formation and Modeling of Colloids From the Corrosion of Nuclear Waste Forms SO SCIENTIFIC BASIS FOR NUCLEAR WASTE MANAGEMENT XXXII SE Materials Research Society Symposium Proceedings LA English DT Proceedings Paper CT 32nd Symposium on Scientific Basis for Nuclear Waste Management held at the 2008 MRS Fall Meeting CY DEC 01-05, 2008 CL Boston, MA SP Mat Res Soc ID PLUTONIUM; STABILITY; FUEL AB This paper describes a model for determining the stability and associated radionuclide concentrations of colloids that might be present in the nuclear waste package environment from degradation of the nuclear waste forms. The model simplifies radionuclide-colloid behavior by assuming that all colloids can be defined as either smectite clay, a mixed actinide-bearing rare earth-zirconium oxide, iron oxyhydroxide (ferrihydrite) [FeOOH), or uranophane (Ca(UO(2))(2)(SiO(3)OH)(2)(H(2)O)(5)). However, for the purposes of predictive stability modeling, the colloids are conceptually represented as montmorillonite, ZrO(2), hematite, and meta-autunite, respectively. The model uses theoretical calculations and laboratory data to determine the stability of modeled colloids with ionic strength and pH. The true nature of colloid composition and heterogeneity, generation, and flocculation will be extremely complex, involving the formation of numerous types of phases, often depending on the composition of the various waste forms and waste package materials. This model strives to capture the uncertainty of the real system using conservatively bound theoretical models. Two of the four representative colloids designed to capture the behavior of the borosilicate glass and spent fuel derived colloids are described in detail here. C1 [Buck, Edgar C.; Wittman, Rick S.] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Buck, EC (reprint author), Pacific NW Natl Lab, 902 Battelle Blvd, Richland, WA 99352 USA. RI Buck, Edgar/D-4288-2009; Buck, Edgar/N-7820-2013 OI Buck, Edgar/0000-0001-5101-9084 NR 19 TC 2 Z9 2 U1 0 U2 12 PU MATERIALS RESEARCH SOCIETY PI WARRENDALE PA 506 KEYSTONE DRIVE, WARRENDALE, PA 15088-7563 USA SN 0272-9172 BN 978-1-60511-096-7 J9 MATER RES SOC SYMP P PY 2009 VL 1124 BP 509 EP 518 PG 10 WC Materials Science, Multidisciplinary; Physics, Nuclear SC Materials Science; Physics GA BLR79 UT WOS:000270898900067 ER PT J AU Kamath, C AF Kamath, Chandrika BA Kamath, C BF Kamath, C TI Scientific Data Mining A PRACTICAL PERSPECTIVE Introduction SO SCIENTIFIC DATA MINING: A PRACTICAL PERSPECTIVE SE Other Titles in Applied Mathematics LA English DT Editorial Material; Book Chapter C1 Lawrence Livermore Natl Lab, Livermore, CA USA. RP Kamath, C (reprint author), Lawrence Livermore Natl Lab, Livermore, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SIAM PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA BN 978-0-898716-75-7 J9 OTHER TITL APPL MATH PY 2009 VL 112 BP 1 EP 4 D2 10.1137/1.9780898717693 PG 4 WC Computer Science, Artificial Intelligence; Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA BOM68 UT WOS:000277022000002 ER PT J AU Kamath, C AF Kamath, Chandrika BA Kamath, C BF Kamath, C TI Data Mining in Science and Engineering SO SCIENTIFIC DATA MINING: A PRACTICAL PERSPECTIVE SE Other Titles in Applied Mathematics LA English DT Article; Book Chapter C1 Lawrence Livermore Natl Lab, Livermore, CA USA. RP Kamath, C (reprint author), Lawrence Livermore Natl Lab, Livermore, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SIAM PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA BN 978-0-898716-75-7 J9 OTHER TITL APPL MATH PY 2009 VL 112 BP 5 EP 39 D2 10.1137/1.9780898717693 PG 35 WC Computer Science, Artificial Intelligence; Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA BOM68 UT WOS:000277022000003 ER PT J AU Kamath, C AF Kamath, Chandrika BA Kamath, C BF Kamath, C TI Scientific Data Mining A PRACTICAL PERSPECTIVE Preface SO SCIENTIFIC DATA MINING: A PRACTICAL PERSPECTIVE SE Other Titles in Applied Mathematics LA English DT Editorial Material; Book Chapter ID NONLINEAR DIMENSIONALITY REDUCTION; MULTISENSOR DATA FUSION; EARTH-MOVERS-DISTANCE; BENT-DOUBLE GALAXIES; REAL-TIME TRACKING; PATTERN-RECOGNITION; WAVELET SHRINKAGE; NEURAL-NETWORKS; DECISION TREES; EDGE-DETECTION C1 Lawrence Livermore Natl Lab, Livermore, CA USA. RP Kamath, C (reprint author), Lawrence Livermore Natl Lab, Livermore, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SIAM PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA BN 978-0-898716-75-7 J9 OTHER TITL APPL MATH PY 2009 VL 112 BP XIII EP + D2 10.1137/1.9780898717693 PG 49 WC Computer Science, Artificial Intelligence; Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA BOM68 UT WOS:000277022000001 ER PT J AU Kamath, C AF Kamath, Chandrika BA Kamath, C BF Kamath, C TI Common Themes in Mining Scientific Data SO SCIENTIFIC DATA MINING: A PRACTICAL PERSPECTIVE SE Other Titles in Applied Mathematics LA English DT Article; Book Chapter C1 Lawrence Livermore Natl Lab, Livermore, CA USA. RP Kamath, C (reprint author), Lawrence Livermore Natl Lab, Livermore, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SIAM PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA BN 978-0-898716-75-7 J9 OTHER TITL APPL MATH PY 2009 VL 112 BP 41 EP 56 D2 10.1137/1.9780898717693 PG 16 WC Computer Science, Artificial Intelligence; Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA BOM68 UT WOS:000277022000004 ER PT J AU Kamath, C AF Kamath, Chandrika BA Kamath, C BF Kamath, C TI The Scientific Data Mining Process SO SCIENTIFIC DATA MINING: A PRACTICAL PERSPECTIVE SE Other Titles in Applied Mathematics LA English DT Article; Book Chapter C1 Lawrence Livermore Natl Lab, Livermore, CA USA. RP Kamath, C (reprint author), Lawrence Livermore Natl Lab, Livermore, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SIAM PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA BN 978-0-898716-75-7 J9 OTHER TITL APPL MATH PY 2009 VL 112 BP 57 EP 66 D2 10.1137/1.9780898717693 PG 10 WC Computer Science, Artificial Intelligence; Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA BOM68 UT WOS:000277022000005 ER PT J AU Kamath, C AF Kamath, Chandrika BA Kamath, C BF Kamath, C TI Reducing the Size of the Data SO SCIENTIFIC DATA MINING: A PRACTICAL PERSPECTIVE SE Other Titles in Applied Mathematics LA English DT Article; Book Chapter C1 Lawrence Livermore Natl Lab, Livermore, CA USA. RP Kamath, C (reprint author), Lawrence Livermore Natl Lab, Livermore, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SIAM PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA BN 978-0-898716-75-7 J9 OTHER TITL APPL MATH PY 2009 VL 112 BP 67 EP 77 D2 10.1137/1.9780898717693 PG 11 WC Computer Science, Artificial Intelligence; Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA BOM68 UT WOS:000277022000006 ER PT J AU Kamath, C AF Kamath, Chandrika BA Kamath, C BF Kamath, C TI Fusing Different Data Modalities SO SCIENTIFIC DATA MINING: A PRACTICAL PERSPECTIVE SE Other Titles in Applied Mathematics LA English DT Article; Book Chapter C1 Lawrence Livermore Natl Lab, Livermore, CA USA. RP Kamath, C (reprint author), Lawrence Livermore Natl Lab, Livermore, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SIAM PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA BN 978-0-898716-75-7 J9 OTHER TITL APPL MATH PY 2009 VL 112 BP 79 EP 92 D2 10.1137/1.9780898717693 PG 14 WC Computer Science, Artificial Intelligence; Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA BOM68 UT WOS:000277022000007 ER PT J AU Kamath, C AF Kamath, Chandrika BA Kamath, C BF Kamath, C TI Enhancing Image Data SO SCIENTIFIC DATA MINING: A PRACTICAL PERSPECTIVE SE Other Titles in Applied Mathematics LA English DT Article; Book Chapter C1 Lawrence Livermore Natl Lab, Livermore, CA USA. RP Kamath, C (reprint author), Lawrence Livermore Natl Lab, Livermore, CA USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU SIAM PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA BN 978-0-898716-75-7 J9 OTHER TITL APPL MATH PY 2009 VL 112 BP 93 EP 112 D2 10.1137/1.9780898717693 PG 20 WC Computer Science, Artificial Intelligence; Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA BOM68 UT WOS:000277022000008 ER PT J AU Kamath, C AF Kamath, Chandrika BA Kamath, C BF Kamath, C TI Finding Objects in the Data SO SCIENTIFIC DATA MINING: A PRACTICAL PERSPECTIVE SE Other Titles in Applied Mathematics LA English DT Article; Book Chapter C1 Lawrence Livermore Natl Lab, Livermore, CA USA. RP Kamath, C (reprint author), Lawrence Livermore Natl Lab, Livermore, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SIAM PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA BN 978-0-898716-75-7 J9 OTHER TITL APPL MATH PY 2009 VL 112 BP 113 EP 139 D2 10.1137/1.9780898717693 PG 27 WC Computer Science, Artificial Intelligence; Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA BOM68 UT WOS:000277022000009 ER PT J AU Kamath, C AF Kamath, Chandrika BA Kamath, C BF Kamath, C TI Extracting Features Describing the Objects SO SCIENTIFIC DATA MINING: A PRACTICAL PERSPECTIVE SE Other Titles in Applied Mathematics LA English DT Article; Book Chapter C1 Lawrence Livermore Natl Lab, Livermore, CA USA. RP Kamath, C (reprint author), Lawrence Livermore Natl Lab, Livermore, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SIAM PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA BN 978-0-898716-75-7 J9 OTHER TITL APPL MATH PY 2009 VL 112 BP 141 EP 160 D2 10.1137/1.9780898717693 PG 20 WC Computer Science, Artificial Intelligence; Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA BOM68 UT WOS:000277022000010 ER PT J AU Kamath, C AF Kamath, Chandrika BA Kamath, C BF Kamath, C TI Reducing the Dimension of the Data SO SCIENTIFIC DATA MINING: A PRACTICAL PERSPECTIVE SE Other Titles in Applied Mathematics LA English DT Article; Book Chapter C1 Lawrence Livermore Natl Lab, Livermore, CA USA. RP Kamath, C (reprint author), Lawrence Livermore Natl Lab, Livermore, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SIAM PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA BN 978-0-898716-75-7 J9 OTHER TITL APPL MATH PY 2009 VL 112 BP 161 EP 176 D2 10.1137/1.9780898717693 PG 16 WC Computer Science, Artificial Intelligence; Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA BOM68 UT WOS:000277022000011 ER PT J AU Kamath, C AF Kamath, Chandrika BA Kamath, C BF Kamath, C TI Finding Patterns in the Data SO SCIENTIFIC DATA MINING: A PRACTICAL PERSPECTIVE SE Other Titles in Applied Mathematics LA English DT Article; Book Chapter C1 Lawrence Livermore Natl Lab, Livermore, CA USA. RP Kamath, C (reprint author), Lawrence Livermore Natl Lab, Livermore, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SIAM PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA BN 978-0-898716-75-7 J9 OTHER TITL APPL MATH PY 2009 VL 112 BP 177 EP 207 D2 10.1137/1.9780898717693 PG 31 WC Computer Science, Artificial Intelligence; Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA BOM68 UT WOS:000277022000012 ER PT J AU Kamath, C AF Kamath, Chandrika BA Kamath, C BF Kamath, C TI Visualizing the Data and Validating the Results SO SCIENTIFIC DATA MINING: A PRACTICAL PERSPECTIVE SE Other Titles in Applied Mathematics LA English DT Article; Book Chapter C1 Lawrence Livermore Natl Lab, Livermore, CA USA. RP Kamath, C (reprint author), Lawrence Livermore Natl Lab, Livermore, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SIAM PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA BN 978-0-898716-75-7 J9 OTHER TITL APPL MATH PY 2009 VL 112 BP 209 EP 219 D2 10.1137/1.9780898717693 PG 11 WC Computer Science, Artificial Intelligence; Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA BOM68 UT WOS:000277022000013 ER PT J AU Kamath, C AF Kamath, Chandrika BA Kamath, C BF Kamath, C TI Scientific Data Mining Systems SO SCIENTIFIC DATA MINING: A PRACTICAL PERSPECTIVE SE Other Titles in Applied Mathematics LA English DT Article; Book Chapter C1 Lawrence Livermore Natl Lab, Livermore, CA USA. RP Kamath, C (reprint author), Lawrence Livermore Natl Lab, Livermore, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SIAM PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA BN 978-0-898716-75-7 J9 OTHER TITL APPL MATH PY 2009 VL 112 BP 221 EP 227 D2 10.1137/1.9780898717693 PG 7 WC Computer Science, Artificial Intelligence; Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA BOM68 UT WOS:000277022000014 ER PT J AU Kamath, C AF Kamath, Chandrika BA Kamath, C BF Kamath, C TI Lessons Learned, Challenges, and Opportunities SO SCIENTIFIC DATA MINING: A PRACTICAL PERSPECTIVE SE Other Titles in Applied Mathematics LA English DT Article; Book Chapter C1 Lawrence Livermore Natl Lab, Livermore, CA USA. RP Kamath, C (reprint author), Lawrence Livermore Natl Lab, Livermore, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SIAM PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA BN 978-0-898716-75-7 J9 OTHER TITL APPL MATH PY 2009 VL 112 BP 229 EP 234 D2 10.1137/1.9780898717693 PG 6 WC Computer Science, Artificial Intelligence; Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA BOM68 UT WOS:000277022000015 ER PT J AU Kurzak, J Dongarra, J AF Kurzak, Jakub Dongarra, Jack TI QR factorization for the Cell Broadband Engine SO SCIENTIFIC PROGRAMMING LA English DT Article DE Cell broadband engine; multi-core; numerical algorithms; linear algebra; matrix factorization ID PERFORMANCE; ALGORITHMS; IMPLEMENTATION; RECURSION; PROCESSOR; SYSTEMS; SERIAL; LEADS AB The QR factorization is one of the most important operations in dense linear algebra, offering a numerically stable method for solving linear systems of equations including overdetermined and underdetermined systems. Modern implementations of the QR factorization, such as the one in the LAPACK library, suffer from performance limitations due to the use of matrix-vector type operations in the phase of panel factorization. These limitations can be remedied by using the idea of updating of QR factorization, rendering an algorithm, which is much more scalable and much more suitable for implementation on a multi-core processor. It is demonstrated how the potential of the cell broadband engine can be utilized to the fullest by employing the new algorithmic approach and successfully exploiting the capabilities of the chip in terms of single instruction multiple data parallelism, instruction level parallelism and thread-level parallelism. C1 [Kurzak, Jakub; Dongarra, Jack] Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN 37996 USA. [Dongarra, Jack] Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN USA. [Dongarra, Jack] Univ Manchester, Sch Math, Manchester, Lancs, England. [Dongarra, Jack] Univ Manchester, Sch Comp Sci, Manchester, Lancs, England. RP Kurzak, J (reprint author), Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN 37996 USA. EM kurzak@eecs.utk.edu RI Dongarra, Jack/E-3987-2014 NR 33 TC 14 Z9 14 U1 0 U2 4 PU IOS PRESS PI AMSTERDAM PA NIEUWE HEMWEG 6B, 1013 BG AMSTERDAM, NETHERLANDS SN 1058-9244 J9 SCI PROGRAMMING-NETH JI Sci. Program. PY 2009 VL 17 IS 1-2 BP 31 EP 42 DI 10.3233/SPR-2009-0268 PG 12 WC Computer Science, Software Engineering SC Computer Science GA 525PG UT WOS:000272227800003 ER PT J AU Knepley, MG Karpeev, DA AF Knepley, Matthew G. Karpeev, Dmitry A. TI Mesh algorithms for PDE with Sieve I: Mesh distribution SO SCIENTIFIC PROGRAMMING LA English DT Article DE Mesh; topology; Sieve; partitioning; distribution AB We have developed a new programming framework, called Sieve, to support parallel numerical partial differential equation(s) (PDE) algorithms operating over distributed meshes. We have also developed a reference implementation of Sieve in C++ as a library of generic algorithms operating on distributed containers conforming to the Sieve interface. Sieve makes instances of the incidence relation, or arrows, the conceptual first-class objects represented in the containers. Further, generic algorithms acting on this arrow container are systematically used to provide natural geometric operations on the topology and also, through duality, on the data. Finally, coverings and duality are used to encode not only individual meshes, but all types of hierarchies underlying PDE data structures, including multigrid and mesh partitions. In order to demonstrate the usefulness of the framework, we show how the mesh partition data can be represented and manipulated using the same fundamental mechanisms used to represent meshes. We present the complete description of an algorithm to encode a mesh partition and then distribute a mesh, which is independent of the mesh dimension, element shape, or embedding. Moreover, data associated with the mesh can be similarly distributed with exactly the same algorithm. The use of a high level of abstraction within the Sieve leads to several benefits in terms of code reuse, simplicity, and extensibility. We discuss these benefits and compare our approach to other existing mesh libraries. C1 [Knepley, Matthew G.; Karpeev, Dmitry A.] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. RP Knepley, MG (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. EM knepley@mcs.anl.gov FU Office of Advanced Scientific Computing Research, Office of Science, US Department of Energy [DE-AC02-06CH11357] FX The authors benefited from many useful discussions with Gary Miller and Rob Kirby. This work was supported by the Mathematical, Information, and Computational Sciences Division subprogram of the Office of Advanced Scientific Computing Research, Office of Science, US Department of Energy, under Contract DE-AC02-06CH11357. NR 20 TC 10 Z9 10 U1 1 U2 4 PU IOS PRESS PI AMSTERDAM PA NIEUWE HEMWEG 6B, 1013 BG AMSTERDAM, NETHERLANDS SN 1058-9244 J9 SCI PROGRAMMING-NETH JI Sci. Program. PY 2009 VL 17 IS 3 BP 215 EP 230 DI 10.3233/SPR-2009-0249 PG 16 WC Computer Science, Software Engineering SC Computer Science GA 525PH UT WOS:000272227900001 ER PT J AU Capolungo, L Beyerlein, IJ Tome, CN AF Capolungo, L. Beyerlein, I. J. Tome, C. N. TI Slip-assisted twin growth in hexagonal close-packed metals SO SCRIPTA MATERIALIA LA English DT Article DE Twinning; Dislocation; Hexagonal close-packed ID PLANE-STRAIN COMPRESSION; HCP METALS; CONSTITUTIVE LAW; SINGLE-CRYSTALS; ALLOY CRYSTALS; PURE MAGNESIUM; ALPHA-TITANIUM; ZINC CRYSTALS; DEFORMATION; DISLOCATIONS AB We study two possible twin growth mechanisms in hexagonal close-packed (hcp) metals: a slip-assisted one, based on dislocation reactions at twin interfaces, and a slip-independent one, based on the direct activation of twin dislocations. A twin thickening rate law is developed to estimate the contribution of slip dislocations to twin growth in hcp crystals. Application of the model to Mg single crystals, and comparison with experimental data, suggests that {10 (1) over bar2} twin thickening proceeds independently of slip. Published by Elsevier Ltd. on behalf of Acta Materialia Inc. C1 [Capolungo, L.; Tome, C. N.] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. [Beyerlein, I. J.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Capolungo, L (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, MST-8 Mail Stop G-755, Los Alamos, NM 87545 USA. EM laurentc@lanl.gov RI Zhang, Jing/B-1421-2012; Tome, Carlos/D-5058-2013; Beyerlein, Irene/A-4676-2011 FU Office of Basic Energy Sciences Project [FWP 06SCPE401]; US DOE [W-7405-ENG-36] FX The authors acknowledge support by an Office of Basic Energy Sciences Project FWP 06SCPE401 under US DOE Contract No. W-7405-ENG-36. NR 30 TC 77 Z9 78 U1 0 U2 43 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 JAN PY 2009 VL 60 IS 1 BP 32 EP 35 DI 10.1016/j.scriptamat.2008.08.044 PG 4 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA 406QX UT WOS:000263311100008 ER PT B AU Ryutova, M Frank, Z Berger, T AF Ryutova, Margarita Frank, Zoe Berger, Thomas BE Lites, B Cheung, M Magara, T Mariska, J Reeves, K TI Formation and Dynamics of Multi-thread Arcades of Coronal Loops SO SECOND HINODE SCIENCE MEETING: BEYOND DISCOVERY-TOWARD UNDERSTANDING SE Astronomical Society of the Pacific Conference Series LA English DT Proceedings Paper CT 2nd Hinode Science Meeting CY SEP 29-OCT 03, 2008 CL Natl Ctr Atmospher Res, Ctr Green Campus, Boulder, CO HO Natl Ctr Atmospher Res, Ctr Green Campus AB Coronal structures having various forms and dynamics, often bifurcate into a long living, well organized multi-thread loop arcades. To describe this process we use the model of energetically open system, consisting of current carrying magnetic loops that interconnect a high beta energy production region with a low beta dissipation region through the resistive stresses. The model includes feedback managed by the transition region. Such a system may be driven into various dynamic forms including spontaneous process of self-organization. C1 [Ryutova, Margarita] LLNL, IGPP, 7000 E Ave, Livermore, CA 94550 USA. [Frank, Zoe; Berger, Thomas] LMSAL, Palo Alto, CA 94304 USA. RP Ryutova, M (reprint author), LLNL, IGPP, 7000 E Ave, Livermore, CA 94550 USA. EM ryntova1@finl.gov; berger@lmsal.com NR 5 TC 0 Z9 0 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA BN 978-1-58381-710-0 J9 ASTR SOC P PY 2009 VL 415 BP 291 EP + PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BQL19 UT WOS:000281239000057 ER PT B AU Ryutova, M Berger, T Title, A AF Ryutova, Margarita Berger, Thomas Title, Alan BE Lites, B Cheung, M Magara, T Mariska, J Reeves, K TI Sunspot Penumbrae: Formation and Fine Structure SO SECOND HINODE SCIENCE MEETING: BEYOND DISCOVERY-TOWARD UNDERSTANDING SE Astronomical Society of the Pacific Conference Series LA English DT Proceedings Paper CT 2nd Hinode Science Meeting CY SEP 29-OCT 03, 2008 CL Natl Ctr Atmospher Res, Ctr Green Campus, Boulder, CO HO Natl Ctr Atmospher Res, Ctr Green Campus ID JET-LIKE FEATURES; FILAMENTS AB Sub-arcsecond observations revealing the fine sub-structure of penumbral filaments and new properties of their dynamics, provide both the basis and constraints for novel models of the penumbra. Even more severe conditions are imposed on models by new data obtained with the SOT instrument on Hinode, showing e.g. direct connection between the dynamic changes in penumbra and appearance of bright transients in the overlying chromosphere. We propose the mechanism that not only explains the observed properties of individual filaments, but is part of the physical process that determines formation of penumbra and its impact on the overlying atmosphere. C1 [Ryutova, Margarita] Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, 7000 E Ave, Livermore, CA 94550 USA. [Berger, Thomas; Title, Alan] LMSAL, Palo Alto, CA 94304 USA. RP Ryutova, M (reprint author), Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, 7000 E Ave, Livermore, CA 94550 USA. EM ryntoval@llnl.gov NR 10 TC 0 Z9 0 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA BN 978-1-58381-710-0 J9 ASTR SOC P PY 2009 VL 415 BP 361 EP + PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BQL19 UT WOS:000281239000070 ER PT B AU Ryutova, M Berger, T Frank, Z Title, A AF Ryutova, Margarita Berger, Thomas Frank, Zoe Title, Alan BE Lites, B Cheung, M Magara, T Mariska, J Reeves, K TI Response of the Chromosphere to Penumbral Dynamics: Bow Shocks and Microjets SO SECOND HINODE SCIENCE MEETING: BEYOND DISCOVERY-TOWARD UNDERSTANDING SE Astronomical Society of the Pacific Conference Series LA English DT Proceedings Paper CT 2nd Hinode Science Meeting CY SEP 29-OCT 03, 2008 CL Natl Ctr Atmospher Res, Ctr Green Campus, Boulder, CO HO Natl Ctr Atmospher Res, Ctr Green Campus ID JET-LIKE FEATURES AB We have analyzed the data sets obtained with the SOT instrument on Hinode during the disc passage of AR 10923 (November 10-20, 2006). Along with a limited number of jet-like features (Katsukawa et al. 2007), we found other kinds of bright chromospheric transients abundantly pervading the entire penumbra and drifting as a whole in a direction perpendicular to their long axes. Quantitative analysis based on our recent penumbral model (Ryutova et al. 2008a) shows that they have all the signatures of bow shocks produced in the overlying chromosphere by post-reconnection penumbral filaments. C1 [Ryutova, Margarita] Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, 7000 E Ave, Livermore, CA 94550 USA. [Berger, Thomas; Frank, Zoe; Title, Alan] LMSAL, Palo Alto, CA 94304 USA. RP Ryutova, M (reprint author), Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, 7000 E Ave, Livermore, CA 94550 USA. EM ryntoval@llnl.gov; berger@lmsal.com; title@lmsal.com NR 7 TC 0 Z9 0 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA BN 978-1-58381-710-0 J9 ASTR SOC P PY 2009 VL 415 BP 373 EP + PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BQL19 UT WOS:000281239000073 ER PT B AU Claycomb, W Shin, DW AF Claycomb, William Shin, Dongwan BE Rodriguez, A Yague, MI FernandezMedina, E TI An Enhanced Approach to using Virtual Directories for Protecting Sensitive Information SO SECURITY IN INFORMATION SYSTEMS, PROCEEDINGS LA English DT Proceedings Paper CT 7th International Workshop on Security in Information Systems (WOSIS 2009) CY MAY, 2009 CL Milan, ITALY AB Enterprise directory services are commonly used in enterprise systems to store object information relating to employees, computers, contacts, etc. These stores can act as information providers or sources for authentication and access control decisions, and could potentially contain sensitive information. An insider attack, particularly if carried out using administrative privileges, could compromise large amounts of directory information. We present a solution for protecting directory services information from insider attacks using existing key management infrastructure and a new component called a Personal Virtual Directory Service. We show how impact to existing users, client applications, and directory services are minimized, and how we prevent insider attacks from revealing protected data. Additionally, our solution is supported by implementation results showing the impact to client performance and directory storage capacity. C1 [Claycomb, William] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Claycomb, W (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM wrclayc@sandia.gov; doshin@nmt.edu NR 12 TC 0 Z9 0 U1 0 U2 0 PU INSTICC-INST SYST TECHNOLOGIES INFORMATION CONTROL & COMMUNICATION PI SETUBAL PA AVENIDA D MANUEL L, 27A 2 ESQUERDO, SETUBAL, 2910-595, PORTUGAL BN 978-989-8111-91-3 PY 2009 BP 36 EP 45 PG 10 WC Computer Science, Information Systems; Computer Science, Software Engineering SC Computer Science GA BQL13 UT WOS:000281235000004 ER PT S AU Eaton, MW Jones, KW Mahajan, D AF Eaton, M. W. Jones, K. W. Mahajan, Devinder BE Long, D Lovell, MA Rees, JG Rochelle, CA TI Mimicking natural systems: methane hydrate formation-decomposition in depleted sediments SO SEDIMENT-HOSTED GAS HYDRATES: NEW INSIGHTS ON NATURAL AND SYNTHETIC SYSTEMS SE Geological Society Special Publication LA English DT Article; Book Chapter ID MARINE-SEDIMENTS; POROUS-MEDIA; GAS; DISSOCIATION; ELASTICITY AB We have initiated a systematic study of sediment-hydrate interaction under subsurface-mimic conditions to initially focus on marine hydrates. A major obstacle to studying natural hydrate systems has been the absence of a sophisticated mimic apparatus in which the hydrate formation phenomenon can be reproduced with precision. We have designed and constructed a bench-top unit, namely flexible integrated study of hydrates (FISH), for this purpose. The unit is fully instrumented to precisely record temperatures, pressures and changes in gas volume during absorption/evolution. The Labview software allows rapid and continuous data collection during the hydrate formation/dissociation cycle. In our integrated approach, several host sediments collected from Blake Ridge, a well-researched hydrate site, were characterized using the computed microtomography technique at Beamline X-26A of the National Synchrotron Light Source at Brookhaven National Laboratory. The characterized depleted sediments were then used to study the hydrate formation/decomposition kinetics under various pressures in the FISH unit. We report two hydrate formation methods: one under continuous methane gas-flow conditions (dynamic mode) and the other in which hydrates are formed from the dissolved gas phase by diffusion (static mode). Also reported is a depressurization method, namely the step-down pressure method, to yield gas evolution data. Data from such runs with host sediment from the deepest site (667 metres) is presented. During hydrate formation, the data reveals a temperature signature that is consistent with an exothermic hydrate formation event. In the decomposition cycle, data at various pressures was analysed to yield curves with similar slopes, suggesting a zero-order dependence. The capabilities of the FISH unit and the implications of these runs in establishing a database of sediment-hydrate kinetics and pore saturation are discussed. C1 [Eaton, M. W.; Mahajan, Devinder] SUNY Stony Brook, Stony Brook, NY 11794 USA. [Jones, K. W.] Brookhaven Natl Lab, Dept Environm Sci, Upton, NY 11973 USA. RP Mahajan, D (reprint author), SUNY Stony Brook, Stony Brook, NY 11794 USA. EM dmahajan@bnl.gov NR 33 TC 1 Z9 1 U1 0 U2 0 PU GEOLOGICAL SOC PUBLISHING HOUSE PI BATH PA UNIT 7, BRASSMILL ENTERPRISE CTR, BRASSMILL LANE, BATH BA1 3JN, AVON, ENGLAND SN 0305-8719 BN 978-1-86239-279-3 J9 GEOL SOC SPEC PUBL JI Geol. Soc. Spec. Publ. PY 2009 VL 319 BP 121 EP 130 DI 10.1144/SP319.10 PG 10 WC Geology; Geosciences, Multidisciplinary SC Geology GA BOW28 UT WOS:000277823300010 ER PT J AU Zucca, JJ Walter, WR Rodgers, AJ Richards, P Pasyanos, ME Myers, SC Lay, T Harris, D Antoun, T AF Zucca, John J. Walter, William R. Rodgers, Arthur J. Richards, Paul Pasyanos, Michael E. Myers, Stephen C. Lay, Thorne Harris, Dave Antoun, Tarabay TI The Prospect of Using Three-Dimensional Earth Models to Improve Nuclear Explosion Monitoring and Ground-motion Hazard Assessment SO SEISMOLOGICAL RESEARCH LETTERS LA English DT Article ID DISCONTINUOUS GALERKIN METHOD; VELOCITY MODEL; SENSITIVITY KERNELS; UNSTRUCTURED MESHES; SEISMIC LOCATION; ADJOINT METHODS; ELASTIC-WAVES; TRAVEL-TIMES; SIMULATION; EVENTS C1 [Zucca, John J.; Walter, William R.; Rodgers, Arthur J.; Pasyanos, Michael E.; Myers, Stephen C.; Harris, Dave; Antoun, Tarabay] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Richards, Paul] Columbia Univ, Lamont Doherty Geol Observ, Palisades, NY 10964 USA. [Lay, Thorne] Univ Calif Santa Cruz, Dept Earth & Planetary Sci, Santa Cruz, CA 95064 USA. RP Zucca, JJ (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA. EM zucca2@llnl.gov RI Rodgers, Arthur/E-2443-2011; Pasyanos, Michael/C-3125-2013; Walter, William/C-2351-2013; Myers, Stephen/K-1368-2014 OI Walter, William/0000-0002-0331-0616; Myers, Stephen/0000-0002-0315-5599 FU US. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; LLNL [LLNL-JRNL-408914] FX We are grateful to the workshop participants for attending, and, especially, to the speakers for taking the time and energy to prepare their excellent presentations. We also thank David McCallen for support and encouragement to hold this works shop. The workshop would not have been a success without logistical support from Connie Ruvalcaba-01son and Sandi Gonsalves. This work has been performed under the auspices of the US. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. This is LLNL contribution LLNL-JRNL-408914. NR 44 TC 3 Z9 3 U1 0 U2 1 PU SEISMOLOGICAL SOC AMER PI ALBANY PA 400 EVELYN AVE, SUITE 201, ALBANY, CA 94706-1375 USA SN 0895-0695 EI 1938-2057 J9 SEISMOL RES LETT JI Seismol. Res. Lett. PD JAN-FEB PY 2009 VL 80 IS 1 BP 31 EP 39 DI 10.1785/gssrl.80.1.31 PG 9 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 393NA UT WOS:000262378800006 ER PT J AU Kishkina, SB Spivak, AA Sweeney, JJ AF Kishkina, S. B. Spivak, A. A. Sweeney, J. J. TI Short-Period Seismic Noise in Vorkuta, Russia SO SEISMOLOGICAL RESEARCH LETTERS LA English DT Article C1 [Kishkina, S. B.; Spivak, A. A.] Russian Acad Sci, Inst Geosphere Dynam, Moscow 117901, Russia. [Sweeney, J. J.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Kishkina, SB (reprint author), Russian Acad Sci, Inst Geosphere Dynam, Moscow 117901, Russia. EM sweeney3@llnl.gov FU Civilian Research and Development Foundation [RUG2-1714-VR-07]; Russian Foundation for Basic Research [08-05-90013-Bel a]; US. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344] FX Special thanks to V. I. Kulikov and A. I. Goncharov, who provided the seismic data. This research was sponsored by the Civilian Research and Development Foundation (project No. RUG2-1714-VR-07) and Russian Foundation for Basic Research (grant No. 08-05-90013-Bel a). This work was performed under the auspices of the US. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. NR 12 TC 1 Z9 1 U1 1 U2 1 PU SEISMOLOGICAL SOC AMER PI EL CERRITO PA PLAZA PROFESSIONAL BLDG, SUITE 201, EL CERRITO, CA 94530 USA SN 0895-0695 J9 SEISMOL RES LETT JI Seismol. Res. Lett. PD JAN-FEB PY 2009 VL 80 IS 1 BP 97 EP 101 DI 10.1785/gssrl.80.1.97 PG 5 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 393NA UT WOS:000262378800013 ER PT S AU Allgood, GO Kuruganti, PT Nutaro, J Saffold, J AF Allgood, Glenn O. Kuruganti, Phani Teja Nutaro, James Saffold, Jay BE Carapezza, EM TI Assured communications and combat resiliency: the relationship between effective national communications and combat effectiveness SO SENSORS, AND COMMAND, CONTROL, COMMUNICATIONS, AND INTELLIGENCE (C3I) TECHNOLOGIES FOR HOMELAND SECURITY AND HOMELAND DEFENSE VIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security and Homeland Defense VIII CY APR 15-17, 2009 CL Orlando, FL SP SPIE DE Disasters; Emergency Communications; Communications Planning; Resiliency AB Combat resiliency is the ability of a commander to prosecute, control, and consolidate his/her's sphere of influence in adverse and changing conditions. To support this, an infrastructure must exist that allows the commander to view the world in varying degrees of granularity with sufficient levels of detail to permit confidence estimates to be levied against decisions and course of actions. An infrastructure such as this will include the ability to effectively communicate context and relevance within and across the battle space. To achieve this will require careful thought, planning, and understanding of a network and its capacity limitations in post-event command and control. Relevance and impact on any existing infrastructure must be fully understood prior to deployment to exploit the system's full capacity and capabilities. In this view, the combat communication network is considered an integral part of or National communication network and infrastructure. This paper will describe an analytical tool set developed at ORNL and RNI incorporating complexity theory, advanced communications modeling, simulation, and visualization technologies that could be used as a pre-planning tool or post event reasoning application to support response and containment C1 [Allgood, Glenn O.; Kuruganti, Phani Teja; Nutaro, James] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Allgood, GO (reprint author), Oak Ridge Natl Lab, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA. EM allgoodgo@ornl.gov OI Nutaro, James/0000-0001-7360-2836 NR 5 TC 0 Z9 0 U1 1 U2 2 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-7571-8 J9 PROC SPIE PY 2009 VL 7305 AR 73050V DI 10.1117/12.818571 PG 8 WC Computer Science, Information Systems; Remote Sensing; Optics SC Computer Science; Remote Sensing; Optics GA BVR65 UT WOS:000292552700019 ER PT S AU Allgood, GO Olama, MM Rose, TA Brumback, D AF Allgood, Glenn O. Olama, Mohammed M. Rose, Terri A. Brumback, Daryl BE Carapezza, EM TI Aviation security cargo inspection queuing simulation model for material flow and accountability SO SENSORS, AND COMMAND, CONTROL, COMMUNICATIONS, AND INTELLIGENCE (C3I) TECHNOLOGIES FOR HOMELAND SECURITY AND HOMELAND DEFENSE VIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security and Homeland Defense VIII CY APR 15-17, 2009 CL Orlando, FL SP SPIE DE Discrete event system; queuing model; residual capacity AB Beginning in 2010, the U. S. will require that all cargo loaded in passenger aircraft be inspected. This will require more efficient processing of cargo and will have a significant impact on the inspection protocols and business practices of government agencies and the airlines. In this paper, we develop an aviation security cargo inspection queuing simulation model for material flow and accountability that will allow cargo managers to conduct impact studies of current and proposed business practices as they relate to inspection procedures, material flow, and accountability. C1 [Allgood, Glenn O.; Olama, Mohammed M.; Rose, Terri A.] Oak Ridge Natl Lab, Computat Sci & Engn Div, Oak Ridge, TN 37831 USA. RP Allgood, GO (reprint author), Oak Ridge Natl Lab, Computat Sci & Engn Div, POB 2008,MS-6085, Oak Ridge, TN 37831 USA. EM allgoodgo@ornl.gov NR 2 TC 0 Z9 0 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-7571-8 J9 PROC SPIE PY 2009 VL 7305 AR 730518 DI 10.1117/12.818555 PG 12 WC Computer Science, Information Systems; Remote Sensing; Optics SC Computer Science; Remote Sensing; Optics GA BVR65 UT WOS:000292552700029 ER PT S AU Knudson, CK Kemp, MC Lombardo, NJ AF Knudson, Christa K. Kemp, Michael C. Lombardo, Nicholas J. BE Carapezza, EM TI STIDP: A US Department of Homeland Security program for countering explosives attacks at large public events and mass transit facilities SO SENSORS, AND COMMAND, CONTROL, COMMUNICATIONS, AND INTELLIGENCE (C3I) TECHNOLOGIES FOR HOMELAND SECURITY AND HOMELAND DEFENSE VIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security and Homeland Defense VIII CY APR 15-17, 2009 CL Orlando, FL SP SPIE DE explosives; IEDs; countermeasure; standoff; STIDP; large public events; crowds; test bed; person-borne; vehicle-borne AB The U.S. Department of Homeland Security's Standoff Technology Integration and Demonstration Program is designed to accelerate the development and integration of technologies, concepts of operations, and training to defeat explosives attacks at large public events and mass transit facilities. The program will address threats posed by suicide bombers, vehicle-borne improvised explosive devices, and leave-behind bombs. The program is focused on developing and testing explosives countermeasure architectures using commercial off-the-shelf and near-commercial standoff and remotely operated detection technologies in prototypic operational environments. An important part of the program is the integration of multiple technologies and systems to protect against a wider range of threats, improve countermeasure performance, increase the distance from the venue at which screening is conducted, and reduce staffing requirements. The program will routinely conduct tests in public venues involving successively more advanced technology, higher levels of system integration, and more complex scenarios. This paper describes the initial field test of an integrated countermeasure system that included infrared, millimeter-wave, and video analytics technologies for detecting person-borne improvised explosive devices at a public arena. The test results are being used to develop a concept for the next generation of integrated countermeasures, to refine technical and operational requirements for architectures and technologies, and engage industry and academia in solution development. C1 [Knudson, Christa K.; Lombardo, Nicholas J.] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Knudson, CK (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99352 USA. EM christa.knudson@pnl.gov NR 3 TC 1 Z9 1 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-7571-8 J9 PROC SPIE PY 2009 VL 7305 AR 73050Y DI 10.1117/12.818819 PG 10 WC Computer Science, Information Systems; Remote Sensing; Optics SC Computer Science; Remote Sensing; Optics GA BVR65 UT WOS:000292552700022 ER PT S AU Hardy, JE Warmack, BJ Lavrik, N Datskos, PG Britton, CL AF Hardy, James E. Warmack, Bruce J. Lavrik, Nickolay Datskos, Panos G. Britton, Charles L., Jr. BE Baraton, MI TI SENSOR SCIENCE FOR NATIONAL SECURITY SO SENSORS FOR ENVIRONMENT, HEALTH AND SECURITY: ADVANCED MATERIALS AND TECHNOLOGIES SE NATO Science for Peace and Security Series C-Environmental Security LA English DT Proceedings Paper CT NATO Advanced Study Institute on Sensors for Environment, Health and Security - Advanced Materials and Technology CY SEP 16-27, 2007 CL Vichy, FRANCE SP NATO DE micro-sensors; chemical sensors; MEMS; national security sensors; low-power electronics; mass spectrometers ID MICROCANTILEVERS; ARRAYS AB Oak Ridge National Laboratory (ORNL) has over 200 professionals engaged in measurement science research and development. This work includes transduction techniques, advanced microelectronics, signal and image processing, modeling and simulation, material synthesis and characterization, and system engineering issues for packaging, miniaturization, integration, and communications (e.g. wireless networks). ORNL is applying this expertise to detecting, preventing, and reversing the proliferation of weapons of mass destruction, deploying integrated systems for incident awareness, detection, and response, providing technology for detection of explosives, and delivering enhanced protection and new capabilities to first responders and warfighters. Sensor systems include micro- and nano-arrays, optical, chemical, and biological technologies. Electronics' research has focused on low-power, low-cost, and wireless functionality. Signal processing advancements encompass data flow with conversion to information and knowledge for intelligent decision making. C1 [Hardy, James E.; Warmack, Bruce J.; Lavrik, Nickolay; Datskos, Panos G.; Britton, Charles L., Jr.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Hardy, JE (reprint author), Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA. EM hardyje@ornl.gov NR 20 TC 0 Z9 0 U1 0 U2 4 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 1871-4668 BN 978-1-4020-9008-0 J9 NATO SCI PEACE SECUR JI NATO Sci. Peace Secur. Ser. C- Environ. Secur. PY 2009 BP 461 EP 478 DI 10.1007/978-1-4020-9009-7_31 PG 18 WC Environmental Sciences; Remote Sensing SC Environmental Sciences & Ecology; Remote Sensing GA BIS94 UT WOS:000262475800031 ER PT S AU Hardy, J Wright, M AF Hardy, James Wright, Michael BE Baraton, MI TI RADIATION AND NUCLEAR MATERIALS DETECTION RESEARCH AND DEVELOPMENT AT ORNL SO Sensors for Environment, Health and Security: Advanced Materials and Technologies SE NATO Science for Peace and Security Series C - Environmental Security LA English DT Proceedings Paper CT NATO Advanced Study Institute on Sensors for Environment, Health and Security - Advanced Materials and Technology CY SEP 16-27, 2007 CL Vichy, FRANCE SP NATO DE radiation detection; nuclear materials and measurements; neutron detectors; nuclear measurement identification; fissile mass flow monitor ID BISMUTH TRI-IODIDE; CRYSTALS; GROWTH AB Research and development is underway to improve radiation and nuclear detection capabilities. This research and development in radiation and nuclear detection includes areas such as advanced materials, applied research and engineering for designing and fabricating Customized detection equipment, and theoretical modeling and computational support. Oak Ridge National Laboratory (ORNL) has a distinctive set of detector materials fabrication and characterization capabilities and recently created a Center for Radiation Detection Materials and Systems. Applied research and engineering efforts have led to the development of improved detectors for specific applications including safeguards, treaty monitoring, and science experiments. All sizes, types, and capabilities of detector systems have been addressed from miniature to man-portable and from neutrons to gamma radiation. Dedicated test beds, in-house and in the field, have been established to analyze, characterize, and improve detection systems. C1 [Hardy, James; Wright, Michael] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Hardy, J (reprint author), Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA. EM hardyje@ornl.gov NR 13 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 1871-4668 BN 978-1-4020-9008-0 J9 NATO SCI PEACE SECUR PY 2009 BP 479 EP 491 DI 10.1007/978-1-4020-9009-7_32 PG 13 WC Environmental Sciences; Remote Sensing SC Environmental Sciences & Ecology; Remote Sensing GA BIS94 UT WOS:000262475800032 ER PT J AU Cooney, M Young, G Nagle, N AF Cooney, Michael Young, Greg Nagle, Nick TI Extraction of Bio-oils from Microalgae SO SEPARATION AND PURIFICATION REVIEWS LA English DT Article DE Microalgae; oil substitute; biofuel; biomass ID ACCELERATED SOLVENT-EXTRACTION; SUBCRITICAL WATER EXTRACTION; MICROBIAL CELL DISRUPTION; TOTAL LIPID DETERMINATION; DILUTE-ACID PRETREATMENT; FATTY-ACID; PHAEODACTYLUM-TRICORNUTUM; HAEMATOCOCCUS-PLUVIALIS; INTRACELLULAR PRODUCTS; BIODIESEL PRODUCTION AB A wide variety of terrestrial biomass feed stocks have been identified as suitable candidates for fractionation and conversion into biofuels. In particular, microalgae have been promoted as a future source of transportation fuels primarily because of their stated potential to produce up to 10 times more oil per acre than traditional biofuel crops. Their ability to grow relatively fast, be harvested on a daily basis, and grown in earthen ponds or closed photobioreactors that occupy marginal or poor crop lands using salt or brackish water, are often referenced. When these attractive traits are coupled with the potential to concomitantly harvest valuable co-products such as biopolymers, proteins, and animal feeds, one can see why microalgae are often touted as biotechnology's "green gold''. The development of large-scale microalgae farms, however, has been slowed by limitations in downstream processing technology. For example, traditional methods to dewater, extract, and recover bio-oil from oil-seeds possess little utility for microalgae. The extreme requirement of dewatering poses tremendous hurdles for any technology processing biofuels from microalgae. To further complicate matters, identifying the most appropriate paths for appropriate extraction technology depends heavily on the microalgal species and its cultivation status, both of which are highly characterized for higher plants as compared to microalgae. In this review we discuss existing extraction methodologies as they have and can be applied to microalgae. Commentary is provided on their potential as a unit operation that exists within the framework of an industrial-scale microalgal cultivation process that extends from the production of biomass in photobioreactors to the fractionation of the recovered bio-oil. C1 [Cooney, Michael] Univ Hawaii Manoa, Hawaii Nat Energy Inst, Honolulu, HI 96822 USA. [Young, Greg] San Jose State Univ, Dept Chem Engn, San Jose, CA 95192 USA. [Nagle, Nick] Natl Renewable Energy Lab, Golden, CO USA. RP Cooney, M (reprint author), Univ Hawaii Manoa, Hawaii Nat Energy Inst, 1680 East West Rd,Post 109, Honolulu, HI 96822 USA. EM mcooney@hawaii.edu NR 72 TC 93 Z9 96 U1 12 U2 107 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 1542-2119 J9 SEP PURIF REV JI Sep. Purif. Rev. PY 2009 VL 38 IS 4 BP 291 EP 325 DI 10.1080/15422110903327919 PG 35 WC Chemistry, Applied; Chemistry, Analytical; Engineering, Chemical SC Chemistry; Engineering GA 539HW UT WOS:000273245600001 ER PT J AU Wardle, KE Allen, TR Swaney, R AF Wardle, Kent E. Allen, Todd R. Swaney, Ross TI CFD Simulation of the Separation Zone of an Annular Centrifugal Contactor SO SEPARATION SCIENCE AND TECHNOLOGY LA English DT Article DE Computational fluid dynamics (CFD); solvent extraction; centrifugal contactors; liquid-liquid separation; reprocessing ID FLOW AB This paper presents computational fluid dynamics (CFD) simulations of the flow inside the rotor of an annular centrifugal contactor. The model geometry was based on the rotor of a commercially available contactor unit with a closed upper weir. Simulations were performed at various flow rates and it was found that the narrow flow area above the upper weir seals with water at high flow rates resulting in the formation of a siphon. A method for predicting the zero-point flow rate from CFD was also developed and simulations were performed which demonstrate a zero-point elevation due to this siphon. C1 [Wardle, Kent E.; Allen, Todd R.] Univ Wisconsin Madison, Dept Engn Phys, Madison, WI USA. [Swaney, Ross] Univ Wisconsin Madison, Dept Chem & Biol Engn, Madison, WI USA. RP Wardle, KE (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. EM kwardle@anl.gov OI Allen, Todd/0000-0002-2372-7259 FU National Center for Supercomputing Applications [TG-ECS070009] FX The authors would like to thank Mark Anderson for assistance with the experimental setup for the measurements. Thanks also to Ralph Leonard of Argonne National Laboratory for many helpful discussions and for contributing his vast contactor experience to provide encouragement and support for the simulation results. This research was performed under appointment to the U. S. Department of Energy Nuclear Engineering and Health Physics Fellowship Program sponsored by the U. S. Department of Energy's Office of Nuclear Energy, Science, and Technology. This work was partially supported by the National Center for Supercomputing Applications under TG-ECS070009 and utilized the Tungsten Cluster. NR 17 TC 15 Z9 15 U1 0 U2 10 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 0149-6395 J9 SEPAR SCI TECHNOL JI Sep. Sci. Technol. PY 2009 VL 44 IS 3 BP 517 EP 542 AR PII 908453372 DI 10.1080/01496390802634398 PG 26 WC Chemistry, Multidisciplinary; Engineering, Chemical SC Chemistry; Engineering GA 403PJ UT WOS:000263094200001 ER PT J AU Anson, A Kuznicki, SM Kuznicki, T Dunn, BC Eyring, EM Hunter, DB AF Anson, Alejandro Kuznicki, Steven M. Kuznicki, Tetyana Dunn, Brian C. Eyring, Edward M. Hunter, Douglas B. TI Separation of Argon and Oxygen by Adsorption on a Titanosilicate Molecular Sieve SO SEPARATION SCIENCE AND TECHNOLOGY LA English DT Article DE Air; argon; molecular sieve; oxygen; zeolite ID GAS-CHROMATOGRAPHIC SEPARATION; KINETIC SELECTIVITY; CARBON-MONOXIDE; AIR SEPARATION; NITROGEN; PROBES; ETS-4 AB A titanosilicate molecular sieve adsorbent, Ba-RPZ-3, was synthesized and tested for its use in the separation of O(2)+Ar mixtures at room temperature. A clean resolution of both gases was achieved in pulse chromatographic experiments using a standard column (0.25 '' OD, 3.5 grams of adsorbent). In another experiment, using a column containing 30 grams of adsorbent and a continuous O(2)+Ar feed at 10 cm(3)/min, argon breakthrough was detected more than 5 minutes before the oxygen breakthrough, and the separation was sufficiently sensitive to achieve quantitative separation of mixtures with low argon content (5% Ar). Equilibrium adsorption isotherms and isosteric heats of adsorption for oxygen and argon were found to be almost identical at room temperature. The thermodynamic selectivity was found to be mildly in favor of oxygen (similar to 1.1-1.2). However, the adsorption of oxygen was observed to be much faster than argon, indicating that the separation of the O(2)+Ar mixtures was based on the sieving properties of the adsorbent and the difference in sizes of O(2) molecules and Ar atoms. This indicates that a suitably-oriented oxygen is physically smaller than argon, despite the fact that many references assume that oxygen is larger than argon. C1 [Anson, Alejandro; Kuznicki, Steven M.; Kuznicki, Tetyana] Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada. [Dunn, Brian C.; Eyring, Edward M.] Univ Utah, Dept Chem, Salt Lake City, UT 84112 USA. [Hunter, Douglas B.] Savannah River Natl Lab, Aiken, SC USA. RP Kuznicki, SM (reprint author), Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada. EM steve.kuznicki@ualberta.ca RI Anson-Casaos, Alejandro/N-2061-2014 OI Anson-Casaos, Alejandro/0000-0002-3134-8566 FU Alberta Ingenuity Fund; Natural Sciences and Engineering Research Council of Canada Discovery; US Department of Energy; NSERC Industrial Chair in New Molecular Sieves FX The authors thank Tony Haastrup, Christopher C. H. Lin and Gabor Konya for their contributions. Financial support is gratefully acknowledged from the Alberta Ingenuity Fund, Natural Sciences and Engineering Research Council of Canada Discovery Grant Program, US Department of Energy funding, and the NSERC Industrial Chair in New Molecular Sieves. NR 34 TC 6 Z9 6 U1 3 U2 16 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 0149-6395 J9 SEPAR SCI TECHNOL JI Sep. Sci. Technol. PY 2009 VL 44 IS 7 BP 1604 EP 1620 DI 10.1080/01496390902775315 PG 17 WC Chemistry, Multidisciplinary; Engineering, Chemical SC Chemistry; Engineering GA 494EF UT WOS:000269792200008 ER PT J AU Chen, HT Kaminski, MD Stepp, PC Holtzman, S Rosengart, AJ AF Chen, Haitao Kaminski, Michael D. Stepp, Patricia C. Holtzman, Steven Rosengart, Axel J. TI Characterization of a Prototype Compact High Gradient Magnetic Separator Device for Blood Detoxification SO SEPARATION SCIENCE AND TECHNOLOGY LA English DT Article DE Magnetic separation; magnetic separator; detoxification; nanotechnology; magnetic nanospheres ID IN-VITRO; THEORETICAL-ANALYSIS; BIOLOGICAL-FLUIDS; GENE DELIVERY; HEMODIALYSIS; VIVO; MAGNETOFECTION; CIRCULATION; RETENTION; PARTICLES AB A prototype compact magnetic separator device for human blood detoxification was characterized using blood-mimicking fluid (ethylene glycol-water solution) as well as whole blood. Magnetic separation at various applied magnetic fields (0.125, 0.33, and 0.44 T) and various flow rates (3.1-29.5 ml/min) showed that the device could efficiently separate magnetic spheres from blood-mimicking fluid at a moderate applied magnetic field (for example, <0.44 T) and relatively high flow rates (for example, <= 29.5 ml/min). The experiments done in flow circulation systems showed that higher flow rates might shorten the sphere recovery time and accelerate the detoxification process. In vitro separation from flowing blood showed that it is possible to use the device to efficiently recover spheres in a reasonably short time (<= 60 min). Moreover, it was also demonstrated that the separator had little effect on the occurrence of hemolysis. All the results revealed that the separator could be a clinically applicable device for efficient separation of magnetic spheres from blood flow for human detoxification purpose. C1 [Chen, Haitao] Maroon Biotech Corp, Chicago, IL 60612 USA. [Kaminski, Michael D.] Argonne Natl Lab, Div Chem Engn, Argonne, IL 60439 USA. [Stepp, Patricia C.] Acad Sci Czech Republic, Inst Organ Chem & Biochem, Prague, Czech Republic. [Holtzman, Steven] AbelsonTaylor Inc, Chicago, IL USA. [Rosengart, Axel J.] Cornell Univ, Dept Neurol & Neurosci, New York Presbyterian Hosp, Ithaca, NY 14853 USA. RP Chen, HT (reprint author), Maroon Biotech Corp, Chicago, IL 60612 USA. EM hchen@maroonbiotech.com FU Defense Advanced Research Program Agency-Defense Science Office [8C850]; Department of Energy [W-31-109-Eng-38]; University of Chicago Brain Research; Cancer Research Foundations FX This work was supported by the Defense Advanced Research Program Agency-Defense Science Office under contract 8C850, the Department of Energy under contract W-31-109-Eng-38, and The University of Chicago Brain Research and Cancer Research Foundations. NR 25 TC 3 Z9 3 U1 0 U2 2 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 0149-6395 J9 SEPAR SCI TECHNOL JI Sep. Sci. Technol. PY 2009 VL 44 IS 9 BP 1954 EP 1969 DI 10.1080/01496390902880172 PG 16 WC Chemistry, Multidisciplinary; Engineering, Chemical SC Chemistry; Engineering GA 494EI UT WOS:000269792500004 ER PT J AU Smith, FG Hamm, LL Aleman, SE Johnson, ME AF Smith, F. G., III Hamm, L. L. Aleman, S. E. Johnson, M. E. TI Modeling Ion-Exchange for Cesium Removal from Alkaline Radioactive Waste Solutions SO SEPARATION SCIENCE AND TECHNOLOGY LA English DT Article DE Cesium removal; ion-exchange; process modeling; radioactive waste ID BEDS AB The performance of spherical Resorcinol-Formaldehyde ion-exchange resin for treatment of radioactive waste solutions is investigated through computer modeling. Results show that ion-exchange is an efficient method for cesium removal from highly alkaline radioactive waste solutions. On average, two 1300 liter columns operating in series are able to treat 690,000 liters of waste with an initial cesium concentration of 0.09mM in 11 days achieving a decontamination factor of over 50,000. The study investigated the sensitivity of ion-exchange column performance to variations in flow, temperature, and column dimensions. Modeling results can be used to optimize the design of the ion exchange system. C1 [Smith, F. G., III; Hamm, L. L.; Aleman, S. E.] Savannah River Natl Lab, Aiken, SC 29808 USA. [Johnson, M. E.] CH2M HILL Hanford Grp Inc, Richland, WA USA. RP Smith, FG (reprint author), Savannah River Natl Lab, Aiken, SC 29808 USA. EM frank02.smith@srnl.doe.gov NR 25 TC 6 Z9 6 U1 2 U2 3 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 0149-6395 J9 SEPAR SCI TECHNOL JI Sep. Sci. Technol. PY 2009 VL 44 IS 13 BP 2983 EP 3012 AR PII 915659023 DI 10.1080/01496390903182545 PG 30 WC Chemistry, Multidisciplinary; Engineering, Chemical SC Chemistry; Engineering GA 553DZ UT WOS:000274347500001 ER PT B AU Celina, M Gillen, KT AF Celina, M. Gillen, K. T. BE Martin, JW Ryntz, RA Chin, J Dickie, RA TI Advances in Exploring Mechanistic Variations in Thermal Aging of Polymers SO SERVICE LIFE PREDICTION OF POLYMERIC MATERIALS: GLOBAL PERSPECTIVES LA English DT Proceedings Paper CT 4th International Symposium on Service Life Prediction CY DEC 03-08, 2006 CL Key Largo, FL ID NON-ARRHENIUS BEHAVIOR; POLYOLEFIN OXIDATION; LIFETIME PREDICTION; OXYGEN DIFFUSION; HTPB ELASTOMER; DEGRADATION; TEMPERATURE; CHEMILUMINESCENCE; EXTRAPOLATION AB More confident lifetime prediction of the performance of polymeric materials requires a better understanding of how temperature may not only accelerate aging but also introduce mechanistic variation in the degradation process itself Such of. effects may occur in any high stress level environments that contain a thermal reaction component, i.e. thermal aging, UV hydrolytic and gamma initiated degradation. The underlying reactions that govern the degradation of a material at the low stress level environment may not be represented to the same degree under accelerated conditions. Additional chemical (aid physical reactions can he introduced under high stress level conditions leading to anomalies and complications for lifetime prediction. Sensitive oxidation rate measurements, monitoring the consumption of an antioxidant, or chemiluminescence based wear-out experiments can be suitable avenues to probe for variations in thermal degradation processes. Under dynamic temperature conditions, knowledge of the e exact thermal history and the dominant thermal reaction component, as well as its activation energy, is needed to better establish mean degradation rates and understand "real" temperature contributions. C1 [Celina, M.] Sandia Natl Labs, Dept 1821, POB 5800,MS 1411, Albuquerque, NM 87185 USA. RP Celina, M (reprint author), Sandia Natl Labs, Dept 1821, POB 5800,MS 1411, Albuquerque, NM 87185 USA. NR 27 TC 2 Z9 2 U1 0 U2 15 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES BN 978-0-387-84875-4 PY 2009 BP 45 EP + DI 10.1007/978-0-387-84876-1_3 PG 3 WC Materials Science, Multidisciplinary; Polymer Science SC Materials Science; Polymer Science GA BJA23 UT WOS:000264098900003 ER PT S AU Zhaunerchyk, V Geppert, WD Hamberg, M Kaminska, M Vigren, E Al-Khalili, A Rosen, S Danielsson, M Osterdahl, F Bednarska, V Petrignani, A Bahati, E Bannister, ME Fogle, MR Vane, CR Larsson, M van der Zande, WJ Thomas, RD AF Zhaunerchyk, V. Geppert, W. D. Hamberg, M. Kaminska, M. Vigren, E. Al-Khalili, A. Rosen, S. Danielsson, M. Osterdahl, F. Bednarska, V. Petrignani, A. Bahati, E. Bannister, M. E. Fogle, M. R. Vane, C. R. Larsson, M. van der Zande, W. J. Thomas, R. D. BE VanDerZande, WJ TI Rotational state effect and fragmentation of small polyatomic molecular ions SO SEVENTH INTERNATIONAL CONFERENCE ON DISSOCIATIVE RECOMBINATION: THEORY, EXPERIMENTS AND APPLICATIONS (DR2007) SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 7th International Conference on Dissociative Recombination: Theory, Experiments and Applications CY JUL 18-23, 2007 CL Radboud Univ Nijmegen, Ameland, NETHERLANDS SP Fdn Fundamental Res Matter, Fdn PHYSICA, Netherlands Royal Acad Sci HO Radboud Univ Nijmegen ID DISSOCIATIVE-RECOMBINATION; BRANCHING FRACTIONS; CROSS-SECTIONS; RATIOS; H-3(+); BEAM; RING AB In the paper we report the first experimental observation of rotational state effects in dissociative recombination of H-2(+). We also report the branching fractions from the DR of BH2+, N-3(+) and O-3(+) and the dynamics occurring in the full fragmentation channel are discussed. C1 [Zhaunerchyk, V.; Geppert, W. D.; Hamberg, M.; Kaminska, M.; Vigren, E.; Al-Khalili, A.; Rosen, S.; Danielsson, M.; Osterdahl, F.; Larsson, M.; Thomas, R. D.] Stockholm Univ, Albanova Univ Ctr, Dept Phys, SE-10691 Stockholm, Sweden. [Bednarska, V.; Petrignani, A.; van der Zande, W. J.] Radboud Univ Nijmegen, Inst Mol & Mat, NL-6500 GL Nijmegen, Netherlands. [Kaminska, M.] Jan Kochanowski Univ Humanities & Sci, Inst Phys, PL-25406 Kielce, Poland. [Bahati, E.; Bannister, M. E.; Fogle, M. R.; Vane, C. R.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RP Zhaunerchyk, V (reprint author), Stockholm Univ, Albanova Univ Ctr, Dept Phys, SE-10691 Stockholm, Sweden. EM vz@physto.se RI Petrignani, Annemieke/E-8589-2010; Zhaunerchyk, Vitali/E-9751-2016 OI Petrignani, Annemieke/0000-0002-6116-5867; NR 24 TC 0 Z9 0 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 192 AR UNSP 012026 DI 10.1088/1742-6596/192/1/012026 PG 4 WC Chemistry, Physical; Physics, Fluids & Plasmas SC Chemistry; Physics GA BTQ61 UT WOS:000287793300026 ER PT J AU Edwards, TS AF Edwards, Timothy S. TI Power delivered to mechanical systems by random vibrations SO SHOCK AND VIBRATION LA English DT Article DE Power; energy; random vibration ID SEISMIC ENERGY AB This paper develops deformational response power descriptions of multiple degree-of-freedom systems due to stationary random vibration excitation. Two new concepts are developed. The deformational response power density (DRPD) can be computed when a structure's natural frequencies and modal masses are available. The DRPD shows the spectral content of the deformational power delivered to a specific structure by the stationary, random excitation. This function can be found through a weighted windowing of the power spectrum of the input acceleration excitation. Deformational response input power spectra (DRIPS), similar to the input energy spectrum and shock response spectrum, give the power delivered to single-degree-of-freedom systems as a function of natural frequency. It is shown that the DRIPS is simply a smoothed version of the power spectrum of the input acceleration excitation. The DRIPS gives rise to a useful power-based data smoothing operation. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Edwards, TS (reprint author), Sandia Natl Labs, Org 1523,MS0557,POB 5800, Albuquerque, NM 87185 USA. EM tsedwar@sandia.gov NR 14 TC 2 Z9 2 U1 1 U2 7 PU IOS PRESS PI AMSTERDAM PA NIEUWE HEMWEG 6B, 1013 BG AMSTERDAM, NETHERLANDS SN 1070-9622 J9 SHOCK VIB JI Shock Vib. PY 2009 VL 16 IS 3 BP 261 EP 271 DI 10.3233/SAV-2009-0465 PG 11 WC Acoustics; Engineering, Mechanical; Mechanics SC Acoustics; Engineering; Mechanics GA 451WQ UT WOS:000266502000003 ER PT S AU Menikoff, R AF Menikoff, Ralph BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI ON BEYOND THE STANDARD MODEL FOR HIGH EXPLOSIVES: CHALLENGES & OBSTACLES TO SURMOUNT SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE hot spots; shock initiation; detonation wave; plastic-bonded explosive; equation of state ID SHOCK INITIATION; DETONATION; HMX AB Plastic-bonded explosives (PBX) are heterogeneous materials. Nevertheless, current explosive models treat them as homogeneous materials. To compensate, an empirically determined effective burn rate is used in place of a chemical reaction rate. A significant limitation of these models is that different burn parameters are needed for applications in different regimes; for example, shock initiation of a PBX at different initial temperatures or different initial densities. This is due to temperature fluctuations generated when a heterogeneous material is shock compressed. Localized regions of high temperatures are called hot spots. They dominate the reaction for shock initiation. The understanding of hot spot generation and their subsequent evolution has been limited by the inability to measure transients on small spatial (similar to 1 mu m) and small temporal (similar to 1 ns) scales in the harsh environment of a detonation. With the advances in computing power, it is natural to try and gain an understanding of hot-spot initiation with numerical experiments based on mesoscale simulations that resolve material heterogeneities and utilize realistic chemical reaction rates. However, to capture the underlying physics correctly, such high resolution simulations will require more than fast computers with a large amount of memory. Here we discuss some of the issues that need to be addressed. These include dissipative mechanisms that generate hot spots, accurate thermal properties for the equations of state of the reactants and products, and controlling numerical entropy errors from shock impedance mismatches at material interfaces. The later can generate artificial hot spots and lead to premature reaction. Eliminating numerical hot spots is critical for shock initiation simulations due to the positive feedback between the energy release from reaction and the hydrodynamic flow. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Menikoff, R (reprint author), Los Alamos Natl Lab, Div Theoret, MS B214, Los Alamos, NM 87545 USA. NR 22 TC 8 Z9 8 U1 3 U2 8 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 18 EP 25 PG 8 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100003 ER PT S AU Eggert, J Ryan, SJ Ramesh, KT Funk, D Proud, W AF Eggert, J. Ryan, S. J. Ramesh, K. T. Funk, D. Proud, W. G. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI TOWN HALL MEETING - SCCM 2009 SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE communication satellites; nanoscale materials and structures; metrology AB The following article contains the summary of the discussion held at the Shock Compression of Condensed Matter Town Hall Meeting. This was held on Tuesday afternoon of the meeting and attracted 100+ attendees. This meeting, chaired by John Eggert, was planned to introduce challenges in selected topics relevant to shock wave science. The three subjects and speakers were: space research introduced by Shannon Ryan, nanotechnology presented by Kaliat T. Ramesh, and compression tools delivered by Dave Funk. After each presentation there were a number of questions. C1 [Eggert, J.] Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA. [Ryan, S. J.] HITF, NASA Johnson Space Ctr, Houston, TX USA. [Ramesh, K. T.] Johns Hopkins Univ, Dept Mech Engn, Baltimore, MD 21218 USA. [Funk, D.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Proud, W. G.] Fracture & Shock Phys Grp, Cavendish Lab, Cambridge CB30HE, England. RP Eggert, J (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA. NR 1 TC 0 Z9 0 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 26 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100004 ER PT S AU Najjar, FM Howard, WM Fried, LE AF Najjar, F. M. Howard, W. M. Fried, L. E. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI GRAIN-SCALE SIMULATIONS OF HOT-SPOT INITIATION FOR SHOCKED TATB SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Hydrodynamics; thermal transport; shocked TATB; pore collapse; ALE3D ID EQUATION-OF-STATE; EXPLOSIVES AB High-explosive (HE) material consists of large-sized grains with micron-sized embedded impurities and pores. Under various mechanical/thermal insults, these pores collapse generating high-temperature regions leading to ignition. A computational study has been performed to investigate the mechanisms of pore collapse and hot spot initiation in TATB crystals, employing the thermo-hydrodynamics arbitrary-Lagrange-Eulerian code ALE3D. This initial study includes non-reactive dynamics to isolate the thermal and hydrodynamical effects. Two-dimensional high-resolution large-scale meso-scale simulations have been undertaken. We study an axisymmetric configuration for pore radii ranging from 0.5 to 2 mu m, with initial shock pressures in the range from 3 to 11 GPa. A Mie-Gruneisen Equation of State (EOS) model is used for TATB, and includes a constant yield strength and shear modulus; while the air in the pore invokes a Livermore Equation of State (LEOS) model. The parameter space is systematically studied by considering various shock strengths, pore diameters and material properties. We find that thermal diffusion from the collapsed pores has an important effect in generating high-temperature hot spots in the TATB. LLNL-PROC-415378 C1 [Najjar, F. M.] Lawrence Livermore Natl Lab, B Div, 7000 E Ave,L-550, Livermore, CA 94551 USA. [Howard, W. M.; Fried, L. E.] Lawrence Livermore Natl Lab, CMELS Div, Livermore, CA 94551 USA. RP Najjar, FM (reprint author), Lawrence Livermore Natl Lab, B Div, 7000 E Ave,L-550, Livermore, CA 94551 USA. RI Fried, Laurence/L-8714-2014 OI Fried, Laurence/0000-0002-9437-7700 FU U.S. Department of Energy - Lawrence Livermore National Security [DE-AC52-07NA27344] FX This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Security under contract No. DE-AC52-07NA27344. The authors acknowledge the numerous discussions with C. Tarver, A. Nichols, N. Barton and J. Banks. NR 8 TC 0 Z9 0 U1 2 U2 9 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 49 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100009 ER PT S AU Barton, NR Bernier, JV Edmiston, JK AF Barton, Nathan R. Bernier, Joel V. Edmiston, John K. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI BRINGING TOGETHER COMPUTATIONAL AND EXPERIMENTAL CAPABILITIES AT THE CRYSTAL SCALE SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE crystal : computer code; phase transformation; twinning; diffraction (X-ray); iron; magnesium ID MARTENSITIC-TRANSFORMATION; POLYCRYSTAL PLASTICITY; STRAIN; MODEL; DEFORMATION; EVOLUTION; IRON; CONTINUUM; ALLOY; TRANSITION AB Many phenomena of interest occur at the scale of crystals or are controlled by events happening at the crystalline scale. Examples include allotropic phase transformations in metals and pore collapse in energetic crystals. The research community is increasingly able to make detailed experimental observations at the crystalline scale and to inform crystal scale models using lower length scale computational tools. In situ diffraction techniques are pushing toward finer spatial and temporal resolution. Molecular and dislocation dynamics calculations are now able to directly inform mechanisms at the crystalline scale. Taken together, these factors give crystal based continuum models the ability to rationalize experimental observations, investigate competition among physical processes, and, when appropriately formulated and calibrated, predict behaviors. We will present an overview of current efforts, with emphasis on recent work investigating phase transformations and twinning in metals. This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344 (LLNL-CONF-415155). C1 [Barton, Nathan R.; Bernier, Joel V.; Edmiston, John K.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Barton, NR (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. NR 39 TC 7 Z9 7 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 73 EP 78 PG 6 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100015 ER PT S AU Loomis, E Swift, D Greenfield, SR Luo, SN Peralta, P AF Loomis, E. Swift, D. Greenfield, S. R. Luo, S. N. Peralta, P. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI ANALYTICAL MODELING OF ELASTIC-PLASTIC WAVE BEHAVIOR NEAR GRAIN BOUNDARIES IN CRYSTALLINE MATERIALS SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE crystal plasticity; grain boundary; plastic wave; anisotropic elasticity ID BICRYSTALS AB It is well known that changes in material properties across an interface will produce differences in the behavior of reflected and transmitted waves. On larger spatial scales, this mesoscopic behavior can result in the roughening of an initially planar shock front after interacting with grains of different orientations. We have developed an analytical model for treating stress wave scattering at grain boundaries based on crystal plasticity. Using this technique we can predict the anisotropic elastic-plastic velocity surfaces and grain boundary scattering configuration for crystalline materials undergoing deformation by slip. Following a brief description of the model we describe laser-induced shock experiments where we have measured the surface roughening due to shock-microstructure interactions. Spatial scales of the surface roughening were observed to scale approximately with the grain size of the material, which in this case was polycrystalline Be and Cu-doped Be. C1 [Loomis, E.; Luo, S. N.] Los Alamos Natl Lab, P 24, POB 1663, Los Alamos, NM 87544 USA. [Swift, D.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. [Greenfield, S. R.] Los Alamos Natl Lab, C CDE, Los Alamos, NM 87544 USA. [Peralta, P.] Arizona State Univ, Mech & Aerospace Engn, Tempe, AZ 85281 USA. RP Loomis, E (reprint author), Los Alamos Natl Lab, P 24, POB 1663, Los Alamos, NM 87544 USA. FU U.S. Department of Energy [W-7405-ENG-36, DEAC52-06NA25396] FX This work was performed for the U.S. Department of Energy under contracts W-7405-ENG-36 and DEAC52-06NA25396 for NNSA campaign 10 (Steve Batha, program manager). Also, we are very appreciative of the support from Trident operations including Randall lohnson, Tom Shimada, Ray Gonzales, Tom Hurry, Sha-Marie Reid, and Fred Archuleta. NR 12 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 79 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100016 ER PT S AU Stewart, DS Bdzil, JB Walter, JW Aida, T AF Stewart, D. S. Bdzil, J. B. Walter, J. W. Aida, T. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI MODELING UNIT CELL INTERACTIONS FOR THE MICROSTRUCTURE OF A HETEROGENEOUS EXPLOSIVE: DETONATION DIFFRACTION PAST AN INERT SPHERE SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Mesoscale model; Metalized explosives; Detonation shock dynamics; Detonation speed ID DYNAMICS AB We describe an approach to model multi-phase blast explosive, which is primarily condensed explosive by volume with inert embedded particles. The asymptotic theory of detonation shock dynamics governs the detonation shock propagation in the explosive. The detonation shock moves at a normal speed that depends on the shock curvature. The shock angle with the particle boundary is also prescribed. We describe theory to predict the behavior of a collection of such detonation shock/particle interactions in the larger aggregate. A unit cell problem, of a detonation shock diffracting over a sphere, is analyzed by analytical and numerical means. The properties of an ensemble of such unit cell problems are discussed with implications for the macroscopic limiting behavior of the heterogeneous explosive. C1 [Stewart, D. S.; Bdzil, J. B.] Univ Illinois, Dept Engn Sci & Mech, Urbana, IL 61801 USA. [Walter, J. W.; Aida, T.] Los Alamos Natl Lab, Appl Phys Div, Los Alamos, NM 87545 USA. RP Stewart, DS (reprint author), Univ Illinois, Dept Engn Sci & Mech, Urbana, IL 61801 USA. FU Air Force Office of Scientific Research; Air Force Research Laboratory, Munitions Directorate FX Sponsored by Air Force Office of Scientific Research and Air Force Research Laboratory, Munitions Directorate. NR 7 TC 0 Z9 0 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 117 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100025 ER PT S AU Hill, LG Mier, R Briggs, ME AF Hill, Larry G. Mier, Robert Briggs, Matthew E. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI PBX 9404 DETONATION COPPER CYLINDER TESTS: A COMPARISON OF NEW AND AGED MATERIAL SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE PBX 9404; Cylinder Test; HMX; Nitrocellulose; Binder; Aging AB We present detonation copper cylinder test results on aged PBX 9404 explosive. The charges were newly pressed from 37.5 year-old molding powder. We compare these results to equivalent data performed on the same lot when it was 3.5 years old. Comparison of the detonation energy inferred from detonation speed to that inferred from wall motion suggests that the HMX energy is unchanged, the NC energy has decreased by similar to 88%, and that similar to 89% of the NC decomposition products are retained in the molding powder. C1 [Hill, Larry G.; Mier, Robert; Briggs, Matthew E.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Hill, LG (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 13 TC 0 Z9 0 U1 1 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 129 EP 132 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100028 ER PT S AU Gibson, LL Bartram, B Dattelbaum, DM Sheffield, SA Stahl, DB AF Gibson, L. L. Bartram, B. Dattelbaum, D. M. Sheffield, S. A. Stahl, D. B. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI A REMOTE LIQUID TARGET LOADING SYSTEM FOR A TWO-STAGE GAS GUN SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Hydrogen peroxide; two-stage gas gun; remote loading; magnetic gauge; detonation ID DETONATION; MIXTURES AB A Remote Liquid Loading System (RLLS) was designed and tested for the application of loading high-hazard liquid materials into instrumented target cells for gas gun-driven plate impact experiments. These high hazard liquids tend to react with confining materials in a short period of time, degrading target assemblies and potentially building up pressure through the evolution of gas in the reactions. Therefore, the ability to load a gas gun target immediately prior to gun firing provides the most stable and reliable target fielding approach. We present the design and evaluation of an RLLS built for the LANL two-stage gas gun. The system has been used successfully to interrogate the shock initiation behavior of similar to 98 wt% percent hydrogen peroxide (H(2)O(2)) solutions, using embedded electromagnetic gauges for measurement of shock wave profiles in,situ. C1 [Gibson, L. L.; Bartram, B.; Dattelbaum, D. M.; Sheffield, S. A.; Stahl, D. B.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Gibson, LL (reprint author), Los Alamos Natl Lab, MS P952, Los Alamos, NM 87545 USA. NR 10 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 133 EP 136 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100029 ER PT S AU Sheffield, SA Dattelbaum, DM Stahl, DB AF Sheffield, S. A. Dattelbaum, D. M. Stahl, D. B. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI IN-SITU MEASUREMENT OF SHOCK-INDUCED REACTIVE FLOW IN A SERIES OF RELATED HYDROCARBONS SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE shock-induced chemistry; 1-3 cyclohexadiene; 1-4 cyclohexadiene; cyclohexene; cyclopentene; organic liquid; magnetic gauges ID TRANSIENT HIGH-PRESSURE; CHEMICAL-REACTION; COMPRESSION DATA; LIQUIDS AB Understanding of the chemistry that occurs under extreme, high-pressure, high-temperature shock environments poses both a significant scientific challenge, due to the difficulty of direct experimental observations, and an opportunity for discovery of new materials and bonding constructs. The combined high pressure, high temperature conditions induced by shock loading results in prompt reactions that may include dynamic bond breaking, dimerization and polymerization, and dissociation to small molecules. Understanding of the evolution of different reaction pathways as a function of shock input remains a significant challenge, due to both the very short shock timescales, and difficulty in measurement of reaction intermediates and products. We have used in-situ multiple magnetic gauges to measure changes in mechanical variables (such as particle velocity waveforms) resulting from the shock-induced chemistry. This allows us to gain some understanding of the shock input conditions necessary to start chemical reaction. Seven experiments have been completed on a set of related organic liquids; 1-3 cyclohexadiene was found to react at 4.9 GPa, 1-4 cyclohexadiene at 7 GPa, cyclohexene between 10 and 12 GPa, and cyclopentene results were inconclusive. Since 1-3 cyclohexadiene could dimerize by a Diels-Alder reaction, it was expected to react at the lowest pressure. C1 [Sheffield, S. A.; Dattelbaum, D. M.; Stahl, D. B.] LANL, Los Alamos, NM 87545 USA. RP Sheffield, SA (reprint author), LANL, DE-9,MS-P952, Los Alamos, NM 87545 USA. NR 13 TC 6 Z9 6 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 145 EP 148 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100032 ER PT S AU Moore, DS Akinci, AA Giambra, AM Clarke, SA AF Moore, D. S. Akinci, A. A. Giambra, A. M. Clarke, S. A. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI PLASMONIC ENHANCEMENT OF DIRECT OPTICAL INITIATION OF EXPLOSIVES SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Detonation; initiation; lasers; detonators; plasmonics AB Current Direct Optical Initiation (DOT) detonators use a laser focused onto a thin metal layer to drive a hot plasma and/or fragments into PETN powder. Previous studies showed a dramatic decrease in laser energies required to initiate the detonation using this approach over direct laser illumination of the PETN powder. Plasmonic metal nanostructures have been shown capable of strongly coupling laser energy into adjacent materials. We have incorporated gold nanospheres into PETN powder and are investigating their plasmonic enhancement of direct optical initiation via measurements of threshold laser energies and streak camera measurements for calculation of run to detonation distances compared to other DOT schemes. C1 [Moore, D. S.; Akinci, A. A.; Giambra, A. M.; Clarke, S. A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Moore, DS (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 4 TC 0 Z9 0 U1 1 U2 5 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 161 EP 164 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100036 ER PT S AU Scovel, CA Menikoff, R AF Scovel, C. A. Menikoff, R. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI A VERIFICATION AND VALIDATION EFFORT FOR HIGH EXPLOSIVES AT LOS ALAMOS NATIONAL LAB SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE High explosive modeling; ASC; verification and validation; detonation waves ID PBX-9501 AB We have started a project to verify and validate ASC codes used to simulate detonation waves in high explosives. Since there are no non-trivial analytic solutions, we are going to compare simulated results with experimental data that cover a wide range of explosive phenomena. The intent is to compare both different codes and different high explosives (HE) models. The first step is to test the products equation of state used for the HE models. For this purpose, the cylinder test, flyer plate and plate-push experiments are being used. These experiments sample different regimes in thermodynamic phase space: the CJ isentrope for the cylinder tests, the isentrope behind an overdriven detonation wave for the flyer plate experiment, and expansion following a reflected CJ detonation for the pate-push experiment, which is sensitive to the Gruneisen coefficient. The results of our findings for PBX 9501 are presented here. C1 [Scovel, C. A.; Menikoff, R.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Scovel, CA (reprint author), Los Alamos Natl Lab, POB 1663,MS T087, Los Alamos, NM 87545 USA. NR 8 TC 0 Z9 0 U1 0 U2 3 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 169 EP 172 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100038 ER PT S AU Bouyer, V Sheffield, SA Dattelbaum, DM Gustavsen, RL Stahl, DB Doucet, M Decaris, L AF Bouyer, Viviane Sheffield, Stephen A. Dattelbaum, Dana M. Gustavsen, Richard L. Stahl, David B. Doucet, Michel Decaris, Lionel BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI EXPERIMENTAL MEASUREMENTS OF THE CHEMICAL REACTION ZONE OF DETONATING LIQUID EXPLOSIVES SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE detonation; reaction zone; nitromethane; VISAR; PDV; HV ID STATE AB We have a joint project between CEA-DAM Le Ripault and Los Alamos National Laboratory (LANL) to study the chemical reaction zone in detonating high explosives using several different laser velocimetry techniques. The short temporal duration of the von Neumann spike and early part of the reaction zone make these measurements difficult. Here, we report results obtained from detonation experiments using VISAR (velocity interferometer system for any reflector) and PDV (photon Doppler velocimetry) methods to measure the particle velocity history at a detonating nitromethane / PMMA interface. Experiments done at CEA were high-explosive-plane-wave initiated and those at LANL were gas-gun-projectile initiated with a detonation run of about 6 charge diameters in all experiments. The experiments had either glass or brass confinement. Excellent agreement of the interface particle velocity measurements at both Laboratories were obtained even though the initiation methods and the velocimetry systems were somewhat different. Some differences were observed in the peak particle velocity because of the similar to 2 ns time resolution of the techniques - in all cases the peak was lower than the expected von Neumann spike. This is thought to be because the measurements were not high enough time resolution to resolve the spike. C1 [Bouyer, Viviane; Doucet, Michel; Decaris, Lionel] CEA, DAM, F-37260 Le Ripault, France. [Sheffield, Stephen A.; Dattelbaum, Dana M.; Gustavsen, Richard L.; Stahl, David B.] Los Alamos Natl Lab, MS P952, Los Alamos, NM 87545 USA. RP Bouyer, V (reprint author), CEA, DAM, F-37260 Le Ripault, France. NR 9 TC 4 Z9 4 U1 1 U2 11 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 177 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100040 ER PT S AU Short, M Salyer, TR Aslam, TD Kiyanda, CB Morris, JS Zimmerly, T AF Short, Mark Salyer, Terry R. Aslam, Tariq D. Kiyanda, Charles B. Morris, John S. Zimmerly, Tony BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI DETONATION SHOCK DYNAMICS CALIBRATION FOR NON-IDEAL HE: ANFO SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Detonation Shock Dynamics; DSD; ammonium nitrate fuel oil; ANFO ID AMMONIUM-NITRATE AB Linear D-n-kappa detonation shock dynamics (DSD) fitting forms are obtained for four ammonium nitrate-fuel oil (ANFO) mixtures involving variations in the ammonium nitrate prill properties and ANFO stoichiometries. C1 [Short, Mark; Salyer, Terry R.; Aslam, Tariq D.; Kiyanda, Charles B.; Morris, John S.] Los Alamos Natl Lab, Shock & Detonat Phys Grp, POB 1663, Los Alamos, NM 87545 USA. [Zimmerly, Tony] New Mexico Inst Min & Technol, Energet Mat Res & Test Ctr, Socorro, NM 87801 USA. RP Short, M (reprint author), Los Alamos Natl Lab, Shock & Detonat Phys Grp, POB 1663, Los Alamos, NM 87545 USA. NR 8 TC 1 Z9 1 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 189 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100043 ER PT S AU Nichols, AL Becker, R Howard, WM Wemhoff, A AF Nichols, A. L., III Becker, R. Howard, W. M. Wemhoff, A. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI TOWARD IMPROVED FIDELITY OF THERMAL EXPLOSION SIMULATIONS SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE thermal Cookoff; HMX; LX-10; ALE3D AB We will present results of an effort to improve the thermal/chemical/mechanical modeling of HMX based explosives like LX04 and LX10 for thermal cook-off. The original HMX model and analysis scheme were developed by Yoh et.al. for use in the ALE3D modeling framework. The current results were built to remedy the deficiencies of that original model. We concentrated our efforts in four areas. The first area was addition of porosity to the chemical material model framework in ALE3D that is used to model the HMX explosive formulation. This is needed to handle the roughly 2% porosity in solid explosives. The second area was the improvement of the HMX reaction network, which included a reactive phase change model base on work by Henson et.al. The third area required adding early decomposition gas species to the CHEETAH material database to develop more accurate equations of state for gaseous intermediates and products. Finally, it was necessary to improve the implicit mechanics module in ALE3D to more naturally handle the long time scales associated with thermal cook-off. The application of the resulting framework to the analysis of the Scaled Thermal Explosion (STEX) experiments will be discussed. C1 [Nichols, A. L., III; Becker, R.; Howard, W. M.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. [Wemhoff, A.] Villanova Univ, Mech Engn, Villanova, PA 19085 USA. RP Nichols, AL (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RI Becker, Richard/I-1196-2013 NR 6 TC 1 Z9 1 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 229 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100053 ER PT S AU Aslam, TD Jackson, SI Morris, JS AF Aslam, Tariq D. Jackson, Scott I. Morris, John S. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI PROTON RADIOGRAPHY OF PBX 9502 DETONATION SHOCK DYNAMICS CONFINEMENT SANDWICH TEST SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE detonation: shock dynamics; PBX 9502 AB Recent results utilizing proton radiography (P-Rad) during the detonation of the high explosive PBX 9502 are presented. Specifically, the effects of confinement of the detonation are examined in the LANL detonation confinement sandwich geometry. The resulting detonation velocity and detonation shock shape are measured. In addition, proton radiography allows one to image the reflected shocks through the detonation products. Comparisons are made with detonation shock dynamics (DSD) and the reactive flow model Ignition and Growth (I&G) for the lead detonation shock and detonation velocity. In addition, predictions of reflected shocks are made with the reactive flow model. C1 [Aslam, Tariq D.; Jackson, Scott I.; Morris, John S.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Aslam, TD (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. OI Jackson, Scott/0000-0002-6814-3468 NR 9 TC 2 Z9 2 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 241 EP 244 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100056 ER PT S AU Salyer, TR Hill, LG Lam, K AF Salyer, Terry R. Hill, Larry G. Lam, Kin BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI CONFINED PBX 9501 GAP REINITIATION STUDIES SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE detonation; gaps; initiation; PBX 9501 AB For explosive systems that exhibit gaps or cracks between their internal components (either by design or mechanical failure), measureable time delays exist for detonation waves crossing them. Reinitiation across such gaps is dependent on the type of explosive, gap width, gap morphology, confinement, and temperature effects. To examine this reinitiation effect, a series of tests has been conducted to measure the time delay across a prescribed gap within an "infinitely" confined PBX 9501 system. Detonation breakout along the explosive surface is measured with a streak camera, and flow features are examined during reinitiation near the gap. Such tests allow for quantitative determination of the time delay corresponding to the time of initiation across a given gap oriented normal to the direction of the detonation wave. Measured time delays can be compared with numerical calculations, making it possible to validate initiation models as well as estimate detonation run-up distances. Understanding this reinitiation behavior is beneficial for the design and evaluation of explosive systems that require precision timing and performance. C1 [Salyer, Terry R.; Hill, Larry G.; Lam, Kin] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Salyer, TR (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 5 TC 0 Z9 0 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 245 EP 248 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100057 ER PT S AU Tarver, CM Chidester, SK AF Tarver, Craig M. Chidester, Steven K. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI MODELING LX-17 DETONATION GROWTH AND DECAY USING THE IGNITION AND GROWTH MODEL SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Triaminotrinitrobenzene; Detonation failure; corner turning; Ignition and Growth AB The previously established Ignition and Growth reactive flow model for the detonating triaminotrinitrobenzene (TATB) based plastic bonded explosive LX-17 is applied to recent experimental detonation propagation/failure experiments using unconfined, Lucite confined, and copper confined cylinders. The model also simulates two corner turning experiments in which steel and Lucite act as boundary materials. Finally, the model is used to calculate a one-inch diameter "Hockey Puck" test in which the booster explosive is HMX-based rather than TATB-based. Since the LX-17 Ignition and Growth model parameters are normalized to a great deal of one-, two- and three-dimensional detonation propagation data, they accurately predict all of this new experimental detonation velocity and arrival time data. C1 [Tarver, Craig M.; Chidester, Steven K.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Tarver, CM (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 9 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 249 EP 252 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100058 ER PT S AU Gustavsen, RL Bartram, BD Sanchez, NJ AF Gustavsen, R. L. Bartram, B. D. Sanchez, N. J. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI DETONATION WAVE PROFILES MEASURED IN PLASTIC BONDED EXPLOSIVES USING 1550 nm PHOTON DOPPLER VELOCIMETRY SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Reaction zone; ZND; Taylor wave; PDV; TATB; HMX AB We present detonation wave profiles measured in two TATB based explosives and two HMX based explosives. Profiles were measured at the interface of the explosive and a Lithium-Fluoride (LiF) window using 1550 nm Photon Doppler Velocimetry (PDV). Planar detonations were produced by impacting the explosive with a projectile launched in a gas-gun. The impact state was changed from shot to shot in order to produce varied distances to detonation. In this way, we tuned the support of the Taylor wave following the Chapman-Jouget (CJ) or sonic state. Profiles from experiments with different support should be the same between the Von-Neumann (VN) spike and CJ state and different thereafter. Comparison of profiles with differing support, therefore, allows us to estimate reaction zone lengths. For the TATB based explosive, a reaction zone length of approximate to 3.9 mm, 500 ns was measured in EDC-35, and a reaction zone length of approximate to 6.3 mm, 800 ns was measured in PBX 9502 pre-cooled to -55 degrees C. The respective VN spike state was 2.25 +/- 0.05 km/s in EDC-35 and 2.4 +/- 0.1 km/s in the cooled PBX 9502. We do not believe we have resolved either the VN spike state (> 2.6 km/s) nor the reaction zone length (<< 50 ns) in the HMX based explosives. C1 [Gustavsen, R. L.; Bartram, B. D.; Sanchez, N. J.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Gustavsen, RL (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 12 TC 3 Z9 3 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 253 EP 256 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100059 ER PT S AU Henson, BF Smilowitz, L Romero, JJ Asay, BW AF Henson, B. F. Smilowitz, L. Romero, J. J. Asay, B. W. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI MODELING THERMAL IGNITION AND THE INITIAL CONDITIONS FOR INTERNAL BURNING IN PBX 9501 SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Thermal ignition; thermal decomposition; kinetics; convective combustion ID SOLID PHASE-TRANSFORMATION; MODERATE TEMPERATURES; MELTING TEMPERATURE; HMX; CHEMISTRY; EXPLOSIVES; PROPELLANTS; TRANSITION; KINETICS; SURFACE AB Work has been ongoing in our group for several years to produce a global chemistry model of thermal ignition for octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) based plastic bonded explosives valid over the entire temperature range of energetic response. We have made considerable progress recently, resulting in both the first broadly accurate model of this type and the possible identification of a crucial component of the chemical mechanism governing thermal decomposition and ignition. The model is similar in kind, but very different in detail from previous models produced by us and others. The model is based on independently measured parameters for known processes in the chemistry of HMX decomposition. We have applied the model in simple calculations of ignition time over the full temperature range of energetic response for HMX, including directly observed ignition induced by fast shear and compression. In this paper we present the model and new calculations relevant to the parameterization of the model to the formulation PBX 9501. C1 [Henson, B. F.; Smilowitz, L.; Romero, J. J.] Los Alamos Natl Lab, Div Chem, POB 1663, Los Alamos, NM 87545 USA. [Asay, B. W.] Los Alamos Natl Lab, Dynam Exp Div, Los Alamos, NM 87545 USA. RP Henson, BF (reprint author), Los Alamos Natl Lab, Div Chem, POB 1663, Los Alamos, NM 87545 USA. NR 25 TC 8 Z9 8 U1 0 U2 4 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 257 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100060 ER PT S AU Dattelbaum, DM Sheffield, SA Stahl, DB Dattelbaum, AM AF Dattelbaum, D. M. Sheffield, S. A. Stahl, D. B. Dattelbaum, A. M. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI INFLUENCE OF HOT SPOT FEATURES ON THE SHOCK INITIATION OF HETEROGENEOUS NITROMETHANE SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Detonation; nitromethane; hot spots ID STATE DETONATION VELOCITY; CONDENSED EXPLOSIVES; GLASS MICROBALLOONS; INHOMOGENEITY; IGNITION; SIZE AB "Hot spots", or regions of localized high temperature and pressure that arise during the shock compression of heterogeneous materials, are known to highly influence the initiation characteristics of explosives. By introducing controlled-size particles at known number densities into otherwise homogeneous explosives, details about hot spot criticality can be mapped for a given material. Here, we describe a series of gas gun-driven plate impact experiments on nitromethane loaded with 40 pm silica beads at 6 wt%. Through the use of embedded electromagnetic gauges, we have gained insight into the initiation mechanisms as a function of the input shock pressure, and present a Pop-plot for the mixture, which is further compared to neat nitromethane. C1 [Dattelbaum, D. M.; Sheffield, S. A.; Stahl, D. B.] Shock & Detonat Phys, Los Alamos, NM 87545 USA. [Dattelbaum, A. M.] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA. RP Dattelbaum, DM (reprint author), Shock & Detonat Phys, Los Alamos, NM 87545 USA. NR 18 TC 1 Z9 1 U1 0 U2 9 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 263 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100061 ER PT S AU Chidester, SK Garcia, F Vandersall, KS Tarver, CM AF Chidester, Steven K. Garcia, Frank Vandersall, Kevin S. Tarver, Craig M. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI SHOCK INITIATION EXPERIMENTS PLUS IGNITION AND GROWTH MODELING OF DAMAGED LX-04 CHARGES SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Explosive; LX-04; damaged; shock to detonation transition; Ignition and Growth AB Shock initiation experiments were performed on mechanically and thermally damaged LX-04 (85% HMX and 15% Viton by weight) to obtain in-situ manganin pressure gauge data and run distances to detonation at various shock pressures. The LX-04 charges were damaged mechanically by applying a compressive load of 600 psi for 20,000 cycles, thus creating many small narrow cracks, or by cutting wedge shaped parts that were then loosely reassembled, thus creating a few large cracks. The thermal damaged LX-04 charges were heated to 190 C for a long enough time for the beta to delta phase transition to occur and then cooled to ambient temperature. Mechanically damaged LX-04 exhibited only slightly increased shock sensitivity, while the thermally damaged LX-04 was much more shock sensitive. The pristine LX-04 Ignition and Growth model, modified only by igniting a larger amount of explosive during shock compression based on the damaged charge density, accurately calculated the increased shock sensitivity of the three damaged charges. C1 [Chidester, Steven K.; Garcia, Frank; Vandersall, Kevin S.; Tarver, Craig M.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Chidester, SK (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 271 EP 274 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100063 ER PT S AU May, CM Tarver, CM AF May, Chadd M. Tarver, Craig M. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI MODELING SHORT SHOCK PULSE DURATION INITIATION OF LX-16 AND LX-10 CHARGES SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Explosive; LX-10; LX-16; shock to detonation transition; ignition and growth AB Very short pulse duration, high pressure shock initiation experiments using electrically driven plastic flyer plates were performed on the explosives LX-10 (95% HMX, 5% Viton binder by weight) and LX-16 (96% PETN, 4% FPC 461 binder by weight) to measure threshold flyer velocities for detonation initiation. For LX-16, threshold velocities were determined for various flyer materials, thicknesses and diameters. This data was calculated using the Ignition and Growth reactive flow model parameters previously determined for LX-10 and LX-16. Good calculated agreement with experimental threshold velocities was obtained by increasing the maximum fraction ignited during high pressure shock compression compared to the fraction ignited by lower pressure sustained shocks. C1 [May, Chadd M.; Tarver, Craig M.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP May, CM (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 7 TC 4 Z9 4 U1 4 U2 14 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 275 EP 278 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100064 ER PT S AU Lee, RJ Forbes, JW Tasker, DG Orme, RS AF Lee, R. J. Forbes, J. W. Tasker, D. G. Orme, R. S. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI CHANGES IN BLOW-OFF VELOCITY OBSERVED IN TWO EXPLOSIVES AT THE THRESHOLD FOR SUSTAINED IGNITION USING THE MODIFIED GAP TEST SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE modified gap test; shock sensitivity; sub-detonative reactions; blow-off velocity AB The Modified Gap Test was used to quantify different levels of partial reaction for various input stresses. This test configuration has been historically useful in highlighting thresholds for first reaction, sustained ignition, and detonation. Two different HMX based compositions were studied; a cast-cured composition with 87% HMX and a pressed composition with 92% HMX. Each explosive was prepared from large industrially produced batches consisting of different unreactive polymeric binder systems. Short samples (50.8 mm in diameter and 12.7 mm thick) were shock loaded using the standard large-scale gap test donor system. Product-cloud blow-off velocities at the opposite end of the sample were measured using a high-speed digital-camera. Velocity versus input pressure plots provided changes in reactivity that had developed by the 12.7 mm run distance. Results appear consistent for the lower input stresses. In contrast, the results varied widely in a range of input stresses around the transition to detonation in both explosives. These results indicate that both explosives are subject to large variation in blow-off velocity in a range of input stresses near the threshold for prompt detonation. This is explained by localized variations of HMX particle size and density in industrially prepared samples. C1 [Lee, R. J.; Orme, R. S.] USN 1, Ctr Surface Warfare, Indian Head Div, Indian Head, MD 20640 USA. [Forbes, J. W.] Energet Technol Ctr, La Plata, MD USA. [Tasker, D. G.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Lee, RJ (reprint author), USN 1, Ctr Surface Warfare, Indian Head Div, Indian Head, MD 20640 USA. FU DTRA FX The Defense Threat Reduction Agency (DTRA) provided partial funding for this work under William Wilson's Advanced Energetics Program. The Authors would like to thank Robert Hay for his technical assistance at NSWC, Indian Head and Dennis Herrera, David Torres, John Echave, Steven Hare, Matthew Briggs, and Michael Shinas for their assistance at Los Alamos NR 12 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 279 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100065 ER PT S AU Moore, DS AF Moore, D. S. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI UNRAVELING SHOCK-INDUCED CHEMISTRY USING ULTRAFAST LASERS SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Shock-induced chemistry; ultrafast spectroscopy; laser driven shocks; ellipsometry ID INFRARED-ABSORPTION; RAMAN-SCATTERING; MOLECULAR-SOLIDS; THIN-FILMS; SPECTROSCOPY; PULSES; INTERFEROMETRY AB The exquisite time synchronicity between shock and diagnostics needed to unravel chemical events occurring in picoseconds has been achieved using a shaped ultrafast laser pulse to both drive the shocks and interrogate the sample via a multiplicity of optical diagnostics. The shaped laser drive pulse can produce well-controlled shock states of sub-ns duration with sub-10 ps rise times, sufficient for investigation of fast reactions or phase transformations in a thin layer with picosecond time resolution. The shock state is characterized using ultrafast dynamic ellipsometry (UDE) in either planar or Gaussian spatial geometries, the latter allowing measurements of the equation of state of materials at a range of stresses in a single laser pulse. Time-resolved processes in materials are being interrogated using UDE, ultrafast infrared absorption, ultrafast UV/visible absorption, and femtosecond stimulated Raman spectroscopy. Using these tools we showed that chemistry in an energetic thin film starts only after an induction time of a few tens of ps, an observation that allows differentiation between proposed shock-induced reaction mechanisms. These tools are presently being applied to a variety of energetic and reactive sample systems, from nitromethane and carbon disulfide, to micro-engineered interfaces in tunable energetic mixtures. C1 Los Alamos Natl Lab, Shock & Detonat Phys Grp, Los Alamos, NM 87545 USA. RP Moore, DS (reprint author), Los Alamos Natl Lab, Shock & Detonat Phys Grp, POB 1663, Los Alamos, NM 87545 USA. RI Moore, David/C-8692-2013 NR 18 TC 2 Z9 2 U1 2 U2 5 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 287 EP 292 PG 6 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100067 ER PT S AU Bolme, CA Eakins, DE Funk, DJ McCrane, SD Moore, DS Whitley, VH AF Bolme, C. A. Eakins, D. E. Funk, D. J. McCrane, S. D. Moore, D. S. Whitley, V. H. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI SINGLE SHOT HUGONIOTS OF TOLUENE AND METHANOL SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Ultrafast dynamic ellipsometry; refractive index; toluene; methanol AB Ultrafast dynamic ellipsometry was used to acquire shock and particle velocities and shocked refractive indices for toluene and methanol. The liquids were driven with a shock wave that was approximately 300 Ps in duration, and the data for each was acquired in a single laser shot by utilizing the Gaussian spatial profile of the drive laser beam to create a range of pressures in the samples. The Hugoniot data match well with previous shock data and with Woolfolk's "universal liquid Hugoniot." The shocked refractive indices of both liquids deviate from the Gladstone-Dale relation, the value expected exclusively from a change in density. C1 [Bolme, C. A.; Eakins, D. E.; Funk, D. J.; McCrane, S. D.; Moore, D. S.; Whitley, V. H.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Bolme, CA (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 7 TC 0 Z9 0 U1 0 U2 5 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 293 EP 296 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100068 ER PT S AU Brundage, AL Wixom, RR Tappan, AS Long, GT AF Brundage, A. L. Wixom, R. R. Tappan, A. S. Long, G. T. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI MESOSCALE SIMULATIONS OF SHOCK INITIATION IN ENERGETIC MATERIALS CHARACTERIZED BY THREE-DIMENSIONAL NANOTOMOGRAPHY SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Microstructure; energetic materials; mesoscale simulations; shock initiation; EOS; CTH AB Three-dimensional shock simulations of energetic materials have been conducted to improve our understanding of initiation at the mesoscale. Vapor-deposited films of PETN and pressed powders of HNS were characterized with a novel three-dimensional nanotomographic technique. Detailed microstructures were constructed experimentally from a stack of serial electron micrographs obtained by successive milling and imaging in a dual-beam FIB/SEM. These microstructures were digitized and imported into a multidimensional, multimaterial Eulerian shock physics code. The simulations provided insight into the mechanisms of pore collapse in PETN and HNS samples with distinctly different three-dimensional pore morphology and distribution. This modeling effort supports investigations of microscale explosive phenomenology and elucidates mechanisms governing initiation of secondary explosives. C1 [Brundage, A. L.; Wixom, R. R.; Tappan, A. S.; Long, G. T.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Brundage, AL (reprint author), Sandia Natl Labs, MS 0836,POB 5800, Albuquerque, NM 87185 USA. NR 9 TC 4 Z9 4 U1 0 U2 8 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 315 EP 318 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100073 ER PT S AU Tappan, AS Wixom, RR Trott, WM Long, GT Knepper, R Brundage, AL Jones, DA AF Tappan, Alexander S. Wixom, Ryan R. Trott, Wayne M. Long, Gregory T. Knepper, Robert Brundage, Aaron L. Jones, David A. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI MICROENERGETIC SHOCK INITIATION STUDIES ON DEPOSITED FILMS OF PETN SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Microenergetics; microdetonics; shock initiation ID PENTAERYTHRITOL TETRANITRATE AB Films of the high explosive PETN (pentaerythritol tetranitrate) up to 500-mu m thick have been deposited through physical vapor deposition, with the intent of creating well-defined samples for shock-initiation studies. PETN films were characterized with microscopy, x-ray diffraction, and focused ion beam nanotomography. These high-density films were subjected to strong shocks in both the out-of-plane and in-plane orientations. Initiation behavior was monitored with high-speed framing and streak camera photography. Direct initiation with a donor explosive (either RDX with binder, or CL-20 with binder) was possible in both orientations, but with the addition of a thin aluminum buffet plate (in-plane configuration only), initiation proved to be difficult. Initiation was possible with an explosively-driven 0.13-mm thick Kapton flyer and direct observation of initiation behavior was examined using streak camera photography at different flyer velocities. Models of this configuration were created using the shock physics code CTH. C1 [Tappan, Alexander S.; Wixom, Ryan R.; Trott, Wayne M.; Long, Gregory T.; Knepper, Robert; Brundage, Aaron L.; Jones, David A.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Tappan, AS (reprint author), Sandia Natl Labs, POB 5800 MS1454, Albuquerque, NM 87185 USA. NR 16 TC 1 Z9 1 U1 0 U2 4 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 319 EP 322 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100074 ER PT S AU Jackson, SI Morris, JS Hill, LG AF Jackson, Scott I. Morris, John S. Hill, Larry G. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI DETERMINATION OF EXPLOSIVE BLAST LOADING EQUIVALENCIES WITH AN EXPLOSIVELY DRIVEN SHOCK TUBE SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE explosive equivalency; non-ideal explosive; blast pressure measurement; heat of detonation AB Recently there has been significant interest in evaluating the potential of many different non-ideal energetic materials to cause blast damage. We present a method intended to quantitatively compare the blast loading generated by different energetic materials through use of an explosively driven shock tube. The test explosive is placed at the closed breech end of the tube and initiated with a booster charge. The resulting shock waves are then contained and focused by the tube walls to form a quasi-one-dimensional blast wave. Pressure transducers along the tube wall measure the blast overpressure versus distance from the source and allow the use of the one-dimensional blast scaling relationship to determine the energy deposited into the blast wave per unit mass of test explosive. These values were measured for C4, ANFO, and two perchlorate explosives. Explosive equivalencies from these values were found to agree with prior theory and experiment. C1 [Jackson, Scott I.; Morris, John S.; Hill, Larry G.] LANL, Shock & Detonat Phys, Los Alamos, NM 87545 USA. RP Jackson, SI (reprint author), LANL, Shock & Detonat Phys, DE 9, Los Alamos, NM 87545 USA. OI Jackson, Scott/0000-0002-6814-3468 NR 3 TC 0 Z9 0 U1 0 U2 3 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 323 EP 326 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100075 ER PT S AU Tasker, DG Whitley, VH Lee, RJ AF Tasker, D. G. Whitley, V. H. Lee, R. J. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI ELECTROMAGNETIC FIELD EFFECTS IN EXPLOSIVES SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE SDT; electric field; magnetic field; plasma; explosives; EMV; PDV ID DETONATION-GENERATED PLASMAS; COHESION AB Present and previous research on the effects of electromagnetic fields on the initiation and detonation of explosives and the electromagnetic properties of explosives are reviewed. Among the topics related to detonating explosives are: enhancement of performance; and control of initiation and growth of reaction. Two series of experiments were performed to determine the effects of 1-T magnetic fields on explosive initiation and growth in the modified gap test and on the propagation of explosively generated plasma into air. The results have implications for the control of reactions in explosives and for the use of electromagnetic particle velocity gauges. C1 [Tasker, D. G.; Whitley, V. H.] Los Alamos Natl Lab, MS J566, MS J566, Los Alamos, NM 87545 USA. [Lee, R. J.] Naval Surface Warfare Ctr, Indian Head Div, Los Alamos 20640, MD USA. RP Tasker, DG (reprint author), Los Alamos Natl Lab, MS J566, MS J566, Los Alamos, NM 87545 USA. FU Defense Threat Reduction Agency (DTRA); Los Alamos National Laboratory [LA-UR 09-03079] FX This work was funded in part by the Defense Threat Reduction Agency (DTRA) for which the authors are grateful. They also acknowledge many helpful discussions and experimental assistance from Dr. Chris Boswell, NSWC Indian Head; and thank Dennis Herrera, David Torres, John Echave, Steven Hare, Matthew Briggs, and Michael Shinas, all of the Los Alamos National Laboratory, for their experimental assistance. LA-UR 09-03079. NR 15 TC 0 Z9 0 U1 0 U2 3 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 335 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100078 ER PT S AU Greenfield, MT McGrane, SD Scharff, RJ Moore, DS AF Greenfield, M. T. McGrane, S. D. Scharff, R. J. Moore, D. S. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI TOWARDS COHERENT CONTROL OF ENERGETIC MATERIAL INITIATION SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Ultrafast spectroscopy; coherent control; pulse shaping; direct optical initiation; hot spot ID STILBENE AB We present direct optical initiation (DOI) of energetic materials using coherent control of localized energy deposition. DOI requires depositing energy into the material to produce a critical size hot spot, which allows propagation of the reaction and thereby initiation. The hot spot characteristics needed for growth to initiation can be studied using quantum controlled initiation (QCI). Achieving QCI in condensed phase energetic materials requires optimally shaped ultrafast laser pulses to coherently guide the energy flow along desired paths. As a test of our quantum control capabilities we have successfully demonstrated our ability to control the reaction pathway of the chemical system stilbene. An acousto-optical modulator based pulse shaper was used at 266 nm, in a shaped pump / supercontinuum probe technique, to enhance and suppress the relative yields of the cis- to trans-stilbene isomerization. The quantum control techniques tested in the stilbene experiments are currently being used to investigate QCI of the explosive hexanitroazobenzene (HNAB). C1 [Greenfield, M. T.; McGrane, S. D.; Scharff, R. J.; Moore, D. S.] Los Alamos Natl Lab, Shock & Detonat Phys Grp, Los Alamos, NM 87545 USA. RP Greenfield, MT (reprint author), Los Alamos Natl Lab, Shock & Detonat Phys Grp, Los Alamos, NM 87545 USA. OI Scharff, Robert/0000-0002-1708-8964 NR 5 TC 0 Z9 0 U1 0 U2 6 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 339 EP 342 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100079 ER PT S AU Anderson, MU Todd, SN Caipen, TL Jensen, CB Hughs, CG AF Anderson, M. U. Todd, S. N. Caipen, T. L. Jensen, C. B. Hughs, C. G. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI NON-SHOCK INITIATION MODEL FOR EXPLOSIVE FAMILIES: EXPERIMENTAL RESULTS SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE initiation; detonation; deflagration; damage; relief wave; rarefaction; porosity AB The "DaMaGe-Initiated-Reaction" (DMGIR) computational model has been developed to predict the response of high explosives to non-shock mechanical insults. The distinguishing feature of this model is the introduction of a damage variable, which relates the evolution of damage to the initiation of a reaction in the explosive, and its growth to detonation. Specifically designed experiments were used to study the initiation process of each explosive family with embedded shock sensors and optical diagnostics. The experimental portion of this model development began with a study of PBXN-5 to develop DMGIR model coefficients for the rigid plastic bonded family, followed by studies of the cast, and bulk-moldable explosive families. The experimental results show an initiation mechanism that is related to input energy and material damage, with well defined initiation thresholds for each explosive family. These initiation details will extend the predictive capability of the DMGIR model from the rigid family into the cast and bulk-moldable families. C1 [Anderson, M. U.; Todd, S. N.; Jensen, C. B.; Hughs, C. G.] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. [Caipen, T. L.] Appl Res Assoc, Albuquerque, NM 87110 USA. RP Anderson, MU (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. FU United States Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000] FX The authors would like to thank Matthew Heine, Shawn Parks, and Jason Podsednik at Sandia and Dennis Grady at Applied Research Associates for their contributions to this research program. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration under Contract DE-AC04-94AL85000. NR 5 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 357 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100083 ER PT S AU Todd, SN Anderson, MU Caipen, TL Grady, DE AF Todd, S. N. Anderson, M. U. Caipen, T. L. Grady, D. E. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI NON-SHOCK INITIATION MODEL FOR EXPLOSIVE FAMILIES: NUMERICAL RESULTS SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE initiation; model; simulation; damage AB A damage initiated reaction (DMGIR) computational model is being developed for the CTH shock physics code to predict the response of an explosive to non-shock mechanical insults. The distinguishing feature of this model is the introduction of a damage variable, which relates the evolution of damage to the initiation of reaction in the explosive, and its growth to detonation. The DMGIR model is a complement to the History Variable Reactive Burn (HVRB) model embedded in the current CTH code. Specifically designed experiments are supporting the development, implementation, and validation of the DMGIR numerical approach. PBXN-5 was the initial explosive material used experimentally to develop the DMGIR model. This explosive represents a family of plastically bonded explosives with good mechanical strength and rigid body properties. The model has been extended to cast explosives represented by Composition B. C1 [Todd, S. N.; Anderson, M. U.] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. [Caipen, T. L.; Grady, D. E.] Appl Res Assoc Inc, Albuquerque, NM 87110 USA. RP Todd, SN (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. FU Sandia Corporation [DE-AC04-94AL85000] FX The authors would like to thank Chance Hughs, Shawn Parks, Charles Jensen, and Mark Anderson for their contributions to this research program. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration under Contract DE-AC04-94AL85000. NR 6 TC 1 Z9 1 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 361 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100084 ER PT S AU Kuklja, MM Rashkeev, SN AF Kuklja, M. M. Rashkeev, Sergey N. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI AUTOCATALYTIC DECOMPOSITION AT SHEAR-STRAIN INTERFACES SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Shear strain; decomposition barrier; density functional theory; autocatalysis ID EXPLOSIVES; MECHANISMS; INITIATION AB Atomic scale mechanisms of the initiation of chemical processes in energetic molecular crystals leading to the decomposition and ultimately to an explosive chain reaction, are far from being completely understood. We investigated the onset of the initiation processes in two energetic crystals diamino-dinitroethylene (DADNE, C2H4N4O4) and triamino-trinitrobenzene (TATB, C6H6N6O6). We suggest that an autocatalytic decomposition mechanism is likely to take place in DADNE crystal that is built out of corrugated, dashboard-shaped molecular layers, and the level of the induced shear-strain perturbation between the layers strongly depends upon the presence of interstitial NO2 groups. Unlike this, in TATB, which consists of flat, graphite-like molecular layers, an interstitial NO2 group positioned between two layers produces a local molecular orientation disorder and barely affects the C-NO2 decomposition barrier. Split off NO2 groups in the interstitial exhibit a series of exothermic reactions. In DADNE, these reactions start at a lower concentration of interstitial nitro-groups which may be correlated to the higher sensitivity of this material to the initiation as compared to TATB. C1 [Kuklja, M. M.] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA. [Rashkeev, Sergey N.] Idaho Natl Lab, Ctr Adv Model & Simulat, Idaho Falls, ID 83415 USA. RP Kuklja, MM (reprint author), Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA. FU ARO; ONR; NSF; INL LDRD; INL; Director of National Science Foundation FX This work is supported in part by ARO, ONR, NSF, the INL LDRD program, and by a grant of computer time from the High erformance Computing program at the INL. MMK is grateful to the Office of the Director of National Science Foundation for support under the IRD Program. Any appearance of findings, conclusions, or recommendations, expressed in this material are those of the authors and do not necessarily reflect views of NSF. NR 15 TC 0 Z9 0 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 365 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100085 ER PT S AU Brown, GW Thompson, DG DeLuca, R Hartline, EL Hagelberg, SI AF Brown, G. W. Thompson, D. G. DeLuca, R. Hartline, E. L. Hagelberg, S. I. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI DENSITY-DEPENDENT ACOUSTIC PROPERTIES OF PBX 9502 SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Acoustic velocity; PBX 9502; ratchet growth; density dependence ID 1,3,5-TRIAMINO-2,4,6-TRINITROBENZENE AB We have measured the longitudinal and shear acoustic velocities of PBX 9502 as a function of density for die-pressed samples over the range 1.795 g/cc to 1.888 g/cc. The density dependence of the velocities is linear. Thermal cycling of PBX 9502 is known to induce irreversible volume growth. We have measured the density dependence of the volume growth for a subset of the pressed parts and find that the most growth occurs for the samples with lowest initial density. The acoustic velocity changes due to the volume growth are significant and reflect damage in the samples. C1 [Brown, G. W.; Thompson, D. G.; DeLuca, R.; Hartline, E. L.; Hagelberg, S. I.] Los Alamos Natl Lab, High Explos Sci & Technol DE 1, Los Alamos, NM 87545 USA. RP Brown, GW (reprint author), Los Alamos Natl Lab, High Explos Sci & Technol DE 1, MS C920, Los Alamos, NM 87545 USA. NR 5 TC 1 Z9 1 U1 0 U2 4 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 373 EP 376 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100087 ER PT S AU Souers, PC Vitello, P Vandersall, KS AF Souers, P. Clark Vitello, Peter Vandersall, Kevin S. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI GAUGE RUN-TO-DETONATION DATA AND FAILURE/DEAD ZONE MODELING SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Explosive; initiation; model; run-to-detonation AB Previous shock initiation run-to-detonation experiments on energetic materials were plotted with distance and time to get a single distance/time to detonation. Modern shots utilize enough gauges so that the distance-time data can be differentiated, which shows not only the usual inflection pressure point before detonation, referred to here as P(b), but also a second, low-pressure inflection, referred to here as P(a) that marks rapid ramp-up of the initiation. An analysis of the TATB based LX-17 and PBX 9502 in addition to the LLM-105 based RX-55 data shows that both P(a) and P(b) increase linearly with the initiation pressure created by the flyer plate. This contradicts the current method in the Tarantula failure/dead zone model, which uses constant pressure boundaries between reaction regions. Modeling changes required by the new data will be considered. C1 [Souers, P. Clark; Vitello, Peter; Vandersall, Kevin S.] Lawrence Livermore Natl Lab, Energet Mat Ctr, Livermore, CA 94550 USA. RP Souers, PC (reprint author), Lawrence Livermore Natl Lab, Energet Mat Ctr, Livermore, CA 94550 USA. NR 7 TC 0 Z9 0 U1 2 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 377 EP 379 PG 3 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100088 ER PT S AU Jensen, BJ Byers, M AF Jensen, B. J. Byers, M. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI LOW-PRESSURE OVERDRIVEN EXPERIMENTS ON PBX 9502 SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE PBX 9502 Hugoniot; PDV multiplexing AB Symmetric impact experiments were performed on PBX 9502 to obtain Hugoniot data in the low-pressure, overdriven regime. An explosive plane wave lens (P300 with comp-B booster) was used to launch an aluminum flyer plate (4 to 4.5 km/s) into an aluminum target backed by the PBX 9502 samples and a LiF window. Photonic Doppler velocimetry (PDV) was used to obtain the shock transit time through the PBX 9502 samples and wave profile data at the PBX 9502/LiF interface. Past experimental results in the overdriven regime revealed a well-defined high-pressure Hugoniot, but the low-pressure (overdriven) data exhibited significant scatter likely due to non-steady wave effects associated with the thin PBX 9502 samples (3-5 mm). The objective of the current work was to obtain Hugoniot data in the low-pressure, overdriven regime for PBX 9502 using recently developed diagnostics along with thicker samples (5-10mm) to decrease the uncertainty and scatter in the Hugoniot data. C1 [Jensen, B. J.; Byers, M.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Jensen, BJ (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 7 TC 1 Z9 1 U1 1 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 380 EP 383 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100089 ER PT S AU Lauderbach, LM Souers, PC Garcia, F Vitello, P Vandersall, KS AF Lauderbach, Lisa M. Souers, P. Clark Garcia, Frank Vitello, Peter Vandersall, Kevin S. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI CHARACTERIZING DETONATING LX-17 CHARGES CROSSING A TRANSVERSE AIR GAP WITH EXPERIMENTS AND MODELING SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Explosive; TATB; LX-17; air gap; crack AB Experiments were performed using detonating LX-17 (92.5% TATB, 7.5% Kel-F by weight) charges with various width transverse air gaps with manganin peizoresistive in-situ gauges present. The experiments, performed with 25 mm diameter by 25 mm long LX-17 pellets with the transverse air gap in between, showed that transverse gaps up to about 3 mm could be present without causing the detonation wave to fail to continue as a detonation. The Tarantula / JWL(++) code was utilized to model the results and compare with the in-situ gauge records with some agreement to the experimental data with additional work needed for a better match to the data. This work will present the experimental details as well as comparison to the model results. C1 [Lauderbach, Lisa M.; Souers, P. Clark; Garcia, Frank; Vitello, Peter; Vandersall, Kevin S.] Lawrence Livermore Natl Lab, Energet Mat Ctr, Livermore, CA 94550 USA. RP Lauderbach, LM (reprint author), Lawrence Livermore Natl Lab, Energet Mat Ctr, Livermore, CA 94550 USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 384 EP 387 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100090 ER PT S AU Thompson, DG Brown, GW Mang, JT DeLuca, R Patterson, B Hagelberg, S AF Thompson, D. G. Brown, G. W. Mang, J. T. DeLuca, R. Patterson, B. Hagelberg, S. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI CHARACTERIZING THE EFFECTS OF RATCHET GROWTH ON PBX 9502 SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE PBX 9502; ratchet growth; TATB; irreversible volume change; density effects AB Pressed composites of TATB (2,4,6-trinintro-1,3,5-benzenetriamine) undergo irreversible volume change when subjected to thermal cycling. Using micro x-ray computed tomography and ultra-small angle neutron scattering, we have characterized the micro-structure of as-pressed and ratchet grown specimens of PBX 9502, a TATB-based composite, thereby distinguishing the effects of ratchet growth from the effects of density alone. Porosity differences are shown to effect mechanical properties, presented here, with ongoing efforts to evaluate sensitivity and/or performance effects. C1 [Thompson, D. G.; Brown, G. W.; Mang, J. T.; DeLuca, R.; Patterson, B.; Hagelberg, S.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Thompson, DG (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 8 TC 0 Z9 0 U1 1 U2 4 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 388 EP 391 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100091 ER PT S AU Reeves, RV White, JDE Dufresne, EM Fezzaa, K Son, SF Mukasyan, AS AF Reeves, R. V. White, J. D. E. Dufresne, E. M. Fezzaa, K. Son, S. F. Mukasyan, A. S. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI ULTRAFAST X-RAY PHASE CONTRAST IMAGING OF A GASLESS REACTIVE SYSTEM USING 3RD GENERATION SYNCHROTRON RADIATION SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE phase contrast imaging; synchrotron radiation; gasless combustion ID HIGH-TEMPERATURE REACTIONS; SUBMICRON RESOLUTION; KINETICS AB We report an ultrafast x-ray phase-contrast imaging study of a gasless composite reactive (Si-coated W wire) system undergoing high heating rates (10(4) - 2.5 x 10(5) K/s). Construction of an imaging system utilizing a high-speed CMOS camera and the third-generation synchrotron at the Advanced Photon Source of Argonne National Laboratory allows for imaging of microstructural changes of the reactive system over previously unstudied time frames and length scales. Imaging was performed at speeds up to 36,000 frames per second with 10 mu m spatial resolution. Using Computer-Assisted Electrothermography (CAE), the heating rate of the gasless reactive system W-Si is controlled and its kinetics is measured. A physical description of the changes undergone by the system during melting and reaction are captured by the high-speed imaging system and correlated to the recorded CAE data. The initial Si melt, as well as the initial reaction, is seen to be non-uniform along the wire. A secondary reaction, undetected by CAE data, is observed and tracked through the imaging. C1 [Reeves, R. V.; Son, S. F.] Purdue Univ, Sch Mech Engn, W Lafayette, IN 47907 USA. [White, J. D. E.; Mukasyan, A. S.] Notre Dame Univ, Dept Chem & Biomol Engn, Notre Dame, IN 46556 USA. [Dufresne, E. M.; Fezzaa, K.] Argonne Natl Lab, X Ray Sci Div, Argonne, IL 60439 USA. RP Reeves, RV (reprint author), Purdue Univ, Sch Mech Engn, W Lafayette, IN 47907 USA. RI Mukasyan, Alexander/K-1784-2013; OI Mukasyan, Alexander/0000-0001-8866-0043; Son, Steven/0000-0001-7498-2922 FU Office of Naval Research [NOO14-07-1-0969]; U.S. D.O.E; Office of Science; Office of Basic Energy Sciences [DE-AC02-06CH11357] FX This work was funded by the Office of Naval Research under contract number NOO14-07-1-0969 with Dr. Clifford Bedford as Program Manager. Use of the APS at Argonne National Laboratorywas supported by the U.S. D.O.E., Office of Science, Office of Basic Energy Sciences, under contract no. DE-AC02-06CH11357. NR 13 TC 0 Z9 0 U1 1 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 396 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100093 ER PT S AU Thornhill, TF Chhabildas, LC Reinhart, WD AF Thornhill, T. F. Chhabildas, L. C. Reinhart, W. D. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI TIME RESOLVED OPTICAL SIGNATURES FOR HUGONIOT STATE MEASUREMENTS IN SHOCK COMPRESSED COMPOSITION-B SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Impact flash; photo-diode; Composition-B; shock velocity; detonation velocity AB Broadband photo-diodes sensitive over the visible and near infrared electromagnetic spectrum are used to monitor impact flash luminosity versus time. Based on careful experimental layout and impact timing the prompt portion of the impact flash signatures reveal the shock propagation timing through a Composition-B target plate. Application of impedance matching techniques and Rankine-Hugoniot Jump equations to this waveform timing provides apparent Hugoniot state measurements of shock compressed Composition-B in the 25 to 50 GPa range. This data will be discussed in detail, along with comparison to previous work below the Composition-B detonation pressure. C1 [Thornhill, T. F.] Ktech Corp Inc, 10800 Gibson Blvd SE, Albuquerque, NM 87123 USA. [Chhabildas, L. C.] Air Force Res Lab, Eglin AFB, FL 32542 USA. [Reinhart, W. D.] Sandia Natl Labs, Albuquerque, NM 87123 USA. RP Thornhill, TF (reprint author), Ktech Corp Inc, 10800 Gibson Blvd SE, Albuquerque, NM 87123 USA. FU Sandia Corporation [DE-AC04-94AL85000] FX Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000. NR 9 TC 0 Z9 0 U1 0 U2 3 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 404 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100095 ER PT S AU Morris, JS Jackson, SI Hill, LG AF Morris, John S. Jackson, Scott I. Hill, Larry G. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI A SIMPLE LINE WAVE GENERATOR USING COMMERCIAL EXPLOSIVES SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE sheet explosives; line wave generator; plane wave lens; wave shaping; detasheet AB We present a simple and inexpensive explosive line wave generator which has been designed using commercial sheet explosive and plane wave lens concepts. The line wave generator is constructed using PETN- and RDX-based sheet explosive for the slow and fast components, respectively, and permits the creation of any desired line width. A series of experiments were performed on a 100-mm design, measuring the detonation arrival time at the output of the generator using a streak camera. An iterative technique was used to adjust the line wave generator's slow and fast components, so as to minimize the arrival time deviation. Preliminary tests achieved a wavefront simultaneity of 100 ns with a 7.0 mm/mu s detonation wave. Designs, test results, and concepts for improvements are discussed. C1 [Morris, John S.; Jackson, Scott I.; Hill, Larry G.] LANL, DE 9, Los Alamos, NM 87545 USA. RP Morris, JS (reprint author), LANL, DE 9, Los Alamos, NM 87545 USA. OI Jackson, Scott/0000-0002-6814-3468 NR 5 TC 2 Z9 2 U1 1 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 408 EP 411 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100096 ER PT S AU Vandersall, KS Garcia, F Tarver, CM AF Vandersall, Kevin S. Garcia, Frank Tarver, Craig M. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI SHOCK INITIATION EXPERIMENTS ON THE TATB BASED EXPLOSIVE RX-03-GO WITH IGNITION AND GROWTH MODELING SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Explosive; TATB; RX-03; LX-17; shock to detonation transition; Ignition and Growth AB Shock initiation experiments on the TATB based explosive RX-03-GO (92.5% TATB, 7.5% Cytop A by weight) were performed to obtain in-situ pressure gauge data, characterize the run-distance-to-detonation behavior, and calculate Ignition and Growth modeling parameters. A 101 mm diameter propellant driven gas gun was utilized to initiate the explosive sample with manganin piezoresistive pressure gauge packages placed between sample slices. The RX-03-GO formulation utilized is similar to that of LX-17 (92.5% TATB, 7.5% Kel-f by weight) with the notable differences of a new binder material and TATB that has been dissolved and recrystallized in order to improve the purity and morphology. The shock sensitivity will be compared with that of prior data on LX-17 and other TATB formulations. Ignition and Growth modeling parameters were obtained with a reasonable fit to the experimental data. C1 [Vandersall, Kevin S.; Garcia, Frank; Tarver, Craig M.] Lawrence Livermore Natl Lab, Energet Mat Ctr, Livermore, CA 94550 USA. RP Vandersall, KS (reprint author), Lawrence Livermore Natl Lab, Energet Mat Ctr, Livermore, CA 94550 USA. NR 11 TC 1 Z9 2 U1 1 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 412 EP 415 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100097 ER PT S AU Zaug, JM Young, CE Long, GT Maienschein, JL Glascoe, EA Hansen, DW Wardell, JF Black, CK Sykora, GB AF Zaug, Joseph M. Young, Christopher E. Long, Gregory T. Maienschein, Jon L. Glascoe, Elizabeth A. Hansen, Donald W. Wardell, Jeffery F. Black, C. Kevin Sykora, Gregory B. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI DEFLAGRATION RATES OF SECONDARY EXPLOSIVES UNDER STATIC MPA-GPA PRESSURE SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE HMX; Composition B; LX-04; RDX; deflagration rate; Raman spectroscopy ID HIGH-TEMPERATURES; HMX AB We provide measurements of the chemical reaction propagation rate (RPR) as a function of pressure using diamond anvil cell (DAC) and strand burner technologies. Materials investigated include HMX and RDX crystalline powders, LX-04 (85% HMX and 15% Viton A), and Composition B (63% RDX, 36% TNT, 1% wax). The anomalous correspondence between crystal structure, including in some instances isostructural phase transitions, on pressure dependent RPRs of HMX and RDX are correlated to confocal micro-Raman spectroscopic results. The contrast between DAC GPa and strand burner MPa regime measurements yield insight into explosive material burn phenomena. Here we highlight physicochemical mechanisms that appear to affect the deflagration rate of precompressed energetic materials. C1 [Zaug, Joseph M.; Maienschein, Jon L.; Glascoe, Elizabeth A.; Hansen, Donald W.; Wardell, Jeffery F.; Black, C. Kevin; Sykora, Gregory B.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. [Young, Christopher E.] GEA Barr Rosin Ltd, Maidenhead SL6 1BR, Berks, England. [Long, Gregory T.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Zaug, JM (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. FU Sandia Corporation [DE-AC04-94AL85000] FX Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000. NR 4 TC 2 Z9 2 U1 1 U2 10 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 420 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100099 ER PT S AU Tringe, JW Molitoris, JD Smilowitz, L Kercher, JR Springer, HK Henson, BF Glascoe, EA Greenwood, DW Garza, RG Wong, BM Batteux, JD Maienschein, JL AF Tringe, J. W. Molitoris, J. D. Smilowitz, L. Kercher, J. R. Springer, H. K. Henson, B. F. Glascoe, E. A. Greenwood, D. W. Garza, R. G. Wong, B. M. Batteux, J. D. Maienschein, J. L. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI TIME-SEQUENCED X-RAY OBSERVATION OF A THERMAL EXPLOSION SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Thermal explosion; radiography; HMX; x-ray AB The evolution of a thermally-initiated explosion is studied using a multiple-image x-ray system. HMX-based PBX 9501 is used in this work, enabling direct comparison to recently-published data obtained with proton radiography [1]. Multiple x-ray images of the explosion are obtained with image spacing of ten microseconds or more. The explosion is simultaneously characterized with a high-speed camera using an interframe spacing of 11 mu s. X-ray and camera images were both initiated passively by signals from an embedded thermocouple array, as opposed to being actively triggered by a laser pulse or other external source. X-ray images show an accelerating reacting front within the explosive, and also show unreacted explosive at the time the containment vessel bursts. High-speed camera images show debris ejected from the vessel expanding at 800-2100 m/s in the first tens of is after the container wall failure. The effective center of the initiation volume is about 6 mm from the geometric center of the explosive. C1 [Tringe, J. W.; Molitoris, J. D.; Kercher, J. R.; Springer, H. K.; Glascoe, E. A.; Greenwood, D. W.; Garza, R. G.; Wong, B. M.; Batteux, J. D.; Maienschein, J. L.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. [Smilowitz, L.; Henson, B. F.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Tringe, JW (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. FU U.S. Department of Energy by LLNL [DE-AC52-07NA27344]; LANL; Joint DoD/DOE Munitions Technology Development Program FX This work was performed under the auspices of the U.S. Department of Energy by LLNL under Contract DE-AC52-07NA27344; ft was supported by Science Campaign 2 and the Surety Program administered by LANL, and the the Joint DoD/DOE Munitions Technology Development Program. Authors thank Dr. Harold Levie (LLNL) for assistance with x-ray image analysis, and Dr.Bmce Watkins (LLNL) for programmatic support. NR 7 TC 3 Z9 3 U1 0 U2 6 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 424 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100100 ER PT S AU Hill, LG Zimmermann, B Nichols, AL AF Hill, Larry G. Zimmermann, Bjoern Nichols, Albert L., III BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI ON THE BURN TOPOLOGY OF HOT-SPOT-INITIATED REACTIONS SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Detonation; Hot Spots; Reactive Burn Modeling; Reaction Progress Function AB We determine the reaction progress function for an ideal hot spot model problem. The considered problem has an exact analytic solution that can be derived from a reduction of A. Nichols' statistical hot spot model [1]. We perform numerical calculations to verify the analytic solution and to illustrate the error realized in real, finite systems. We show how the baseline problem, which does not distinguish between the reactant and product densities, can be scaled to handle general cases for which the two densities differ. C1 [Hill, Larry G.] Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. [Zimmermann, Bjoern] Wolfram Res Inc, Champaign, IL 61820 USA. [Nichols, Albert L., III] Livermore Natl Lab, Livermore, CA 94551 USA. RP Hill, LG (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. FU U.S. Dept. of Energy FX This work was funded by the U.S. Dept. of Energy. NR 4 TC 3 Z9 3 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 432 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100102 ER PT S AU Smilowitz, L Henson, BF Romero, JJ Asay, BW AF Smilowitz, L. Henson, B. F. Romero, J. J. Asay, B. W. CA PRAD Collaboration BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI A COMPARISON OF THERMAL EXPLOSIONS IN PBX 9501 AND PBXN-9 SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE PBX9501; HMX; thermal explosion; laser ignition AB We have used a variety of observables to study the response of HMX based energetic materials formulations to thermal stimuli. In this paper, we compare the response of PBX 9501 and PBXN-9 to a temperature of 205 degrees C. Both undergo thermal runaway at this boundary condition with similar preignition behavior. However, the post-ignition burn propagations of the two formulations are very different with the final reaction violence significantly lower for PBXN-9 than for PBX 9501. C1 [Smilowitz, L.; Henson, B. F.; Romero, J. J.] Los Alamos Natl Lab, Div Chem, POB 1663, Los Alamos, NM 87545 USA. [Asay, B. W.; PRAD Collaboration] Los Alamos Natl Lab, Dynam Experimentat Div, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA. RP Smilowitz, L (reprint author), Los Alamos Natl Lab, Div Chem, POB 1663, Los Alamos, NM 87545 USA. FU Munitions Program, and campaigns; Los Alamos National Lab FX Funding for this work was provided by the Joint Munitions Program, and campaigns 2 and 5 at Los Alamos National Lab. The PBXN-9 was provided by Dr. Jamie Neidert at AMRDEC and Dr. Mike Kaneshige at SNL. NR 4 TC 2 Z9 2 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 436 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100103 ER PT S AU Hsu, PC DeHaven, MR Springer, HK Maienschein, JL AF Hsu, P. C. DeHaven, M. R. Springer, H. K. Maienschein, J. L. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI THERMAL DAMAGE CHARACTERIZATION OF ENERGETIC MATERIALS SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE thermal damage; gas permeability; density; and porosity; PBXN-9 ID LX-04 AB We conducted thermal damage experiments at 180 degrees C on PBXN-9 and characterized its material properties. Volume expansion at high temperatures was very significant which led to a reduction in material density. 2.6% of weight loss was observed, which was higher than other HMX-based formulations. Porosity of PBXN-9 increased to 16% after thermal exposure. Small-scale safety tests (impact, friction, and spark) showed no significant sensitization when the damaged samples were tested at room temperature. Gas permeation measurements showed that gas permeability in damaged materials was several orders of magnitude higher than that in pristine materials. In-situ measurements of gas permeability and density were proved to be possible at higher temperatures. C1 [Hsu, P. C.; DeHaven, M. R.; Springer, H. K.; Maienschein, J. L.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Hsu, PC (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 9 TC 1 Z9 1 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 440 EP 443 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100104 ER PT S AU Zucker, JM Tappan, BC Lloyd, JM Foley, TJ AF Zucker, J. M. Tappan, B. C. Lloyd, J. M. Foley, T. J. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI THERMAL IGNITION OF DETONABLE HYDROGEN PEROXIDE COMPOSITIONS SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Hydrogen Peroxide; cookoff; thermal ignition; acid sensitization AB Hydrogen peroxide can be mixed with a variety of fuels to produce detonable compositions. These compositions can be thermally unstable and their behavior can be difficult to predict. Furthermore, the addition of some acids to the mixture could increase its sensitivity. Presented here are the outcomes of cookoff experiments performed on hydrogen peroxide and fuels compositions, as well as an acid-sensitized mixture. Soak temperatures of 88 degrees C, 84 degrees C and 82 degrees C were used, with reaction times of 3010 seconds, 3560 seconds and 3230 seconds, accordingly. The acid-sensitized experiment, when soaked at 82 degrees C, reacted after just 2450 seconds. C1 [Zucker, J. M.; Tappan, B. C.; Lloyd, J. M.; Foley, T. J.] Los Alamos Natl Lab, Explos Applicat & Special Projects, Los Alamos, NM 87545 USA. RP Zucker, JM (reprint author), Los Alamos Natl Lab, Explos Applicat & Special Projects, MS J564,POB 1663, Los Alamos, NM 87545 USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 462 EP 465 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100109 ER PT S AU Sanchez, NJ Gustavsen, RL Hooks, DE AF Sanchez, N. J. Gustavsen, R. L. Hooks, D. E. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI SHOCK INITIATION BEHAVIOR OF PBXN-9 DETERMINED BY GAS GUN EXPERIMENTS SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Plastic Bonded Explosives; HMX; Shock Initiation; Hugoniot AB The shock to detonation transition was evaluated in the HMX based explosive PBXN-9 by a series of light-gas gun experiments. PBXN-9 consists of 92 wt% HMX, 2wt% Hycar 4054 & 6 wt% dioctyl adipate with a density of 1.75 g/cm(3) and 0.8% voids. The experiments were designed to understand the specifics of wave evolution and the run distance to detonation as a function of input shock pressure. These experiments were conducted on gas guns in order to vary the input shock pressure accurately. The primary diagnostics were embedded magnetic gauges, which are based on Faraday's law of induction, and Photon Doppler Velocimetry (PDV). The run distance to detonation vs. shock pressure, or "Pop plot," was redefined as log(X*) = 2.14-1.82 log(P), which is substantially different than previous data. The Hugoniot was refined as U-s = 2.32 + 2.21U(p). This data will be useful for the development of predictive models for the safety and performance of PBXN-9 along with providing increased understanding of HMX based explosives in varying formulations. C1 [Sanchez, N. J.; Gustavsen, R. L.; Hooks, D. E.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Sanchez, NJ (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 11 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 490 EP 493 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100116 ER PT S AU Adams, CD Anderson, WW Gray, GT Blumenthal, WR Owens, CT Freibert, FJ Montoya, JM Contreras, PJ AF Adams, Chris D. Anderson, William W. Gray, George T., III Blumenthal, William R. Owens, Charles T. Freibert, Franz J. Montoya, Johnny M. Contreras, Paul J. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI SPALL AND DAMAGE BEHAVIOR OF S200F BERYLLIUM SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Spall; Beryllium; Equation of State; Gas Gun AB We have performed a series of plate impact experiments to study the strength and spall damage behavior of S200F Be. Peak stresses achieved were in the range from 5.6-19.2 GPa. VISAR data show long rise times in the approach to the shocked state believed to be the result of twinning occurring alongside or in deference to slip in this hep material, with its free surface never achieving a steady velocity. These data indicate brittle spall behavior with spall strengths ill the range of 0.8-0.9 GPa. In experiments where target thickness is varied, we see evidence of precursor decay and present calculations of the Hugoniot Elastic Limit (HEL). C1 [Adams, Chris D.; Anderson, William W.; Gray, George T., III; Blumenthal, William R.; Owens, Charles T.; Freibert, Franz J.; Montoya, Johnny M.; Contreras, Paul J.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Adams, CD (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. OI Freibert, Franz/0000-0003-4434-3446 NR 10 TC 5 Z9 5 U1 1 U2 6 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 509 EP 512 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100120 ER PT S AU Schwartz, CL Hogan, GE King, NSP Kwiatkowski, K Mariam, FG Marr-Lyon, M McNeil, WV Merrill, FE Morris, CL Rightley, PM Saunders, A AF Schwartz, C. L. Hogan, G. E. King, N. S. P. Kwiatkowski, K. Mariam, F. G. Marr-Lyon, M. McNeil, W. V. Merrill, F. E. Morris, C. L. Rightley, P. M. Saunders, A. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI HUGONIOT MEASUREMENTS AT LOW PRESSURES IN TIN USING 800 MeV PROTON RADIOGRAPHY SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE proton radiography; equation of state; tin AB A 20mm long 8 mm diameter cylindrical tin target has been shocked to a pressure just below the beta ->gamma phase change, using a small, low density PETN charge mounted on the opposite side of a thin stainless steel diaphragm. The density jump and shock velocity were measured radiographically at multiple points as the shock wave moved though the sample and the pressure dropped, using the proton radiography facility at LANL. This provided a quasi-continuous record along the principal Hugoniot from a peak shock velocity of 3.27 km/sec to a minimum of 3.09 km/sec. Edge release effects were removed from the data using simple tomographic reconstruction techniques. The data and analysis are presented. C1 [Schwartz, C. L.; Hogan, G. E.; King, N. S. P.; Kwiatkowski, K.; Mariam, F. G.; Merrill, F. E.; Morris, C. L.; Saunders, A.] Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA. [Marr-Lyon, M.; Rightley, P. M.] Los Alamos Natl Lab, DE Div, Los Alamos, NM 87545 USA. [McNeil, W. V.] Los Alamos Natl Lab, HX Div, Los Alamos, NM 87545 USA. RP Schwartz, CL (reprint author), Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA. FU U. S. Department of Energy FX Funding was provided by the U. S. Department of Energy. The authors thank the LANSCE accelerator operations team and are most grateful to many current and past colleagues whose advances and contributions have made this experiment possible. NR 9 TC 2 Z9 2 U1 0 U2 7 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 517 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100122 ER PT S AU Coe, JD Sewell, TD Shaw, MS AF Coe, Joshua D. Sewell, Thomas D. Shaw, M. Sam BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI OPTIMIZED NESTED MARKOV CHAIN MONTE CARLO SAMPLING: THEORY SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Monte Carlo; statistical mechanics; dense fluids AB Metropolis Monte Carlo sampling of a reference potential is used to build a Markov chain in the isothermal-isobaric ensemble. At the endpoints of the chain, the energy is reevaluated at a different level of approximation (the "full" energy) and a composite move encompassing all of the intervening steps is accepted on the basis of a modified Metropolis criterion. By manipulating the thermodynamic variables characterizing the reference system we maximize the average acceptance probability of composite moves, lengthening significantly the random walk made between consecutive evaluations of the full energy at a fixed acceptance probability. This provides maximally decorrelated samples of the full potential, thereby lowering the total number required to build ensemble averages of a given variance. The efficiency of the method is illustrated using model potentials appropriate to molecular fluids at high pressure. Implications for ab initio or density functional theory (DFT) treatment are discussed. C1 [Coe, Joshua D.; Shaw, M. Sam] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. [Sewell, Thomas D.] Univ Missouri, Dept Chem, Columbia, MO 65211 USA. RP Coe, JD (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. FU LANL High Explosives Project of the National Nuclear Security Administration (NNSA); Advanced Strategic Computing Program (HEASC); LANL Laboratory Directed Research and Development (LDRD); Army Research Office [W911NF-05-1-0265]; Alamos National Security L.L.C. under the auspices of the NNSA; United States Department of Energy [DEAC52- 06NA25396] FX JDC is a Director's Fellow at Los Alamos National Laboratory (LANL). MSS is supported by the LANL High Explosives Project of the National Nuclear Security Administration (NNSA) Advanced Strategic Computing Program (HEASC). IDS is supported by the LANL Laboratory Directed Research and Development (LDRD) Program and by the Army Research Office under Grant No. W911NF-05-1-0265. LANL is operated by Los Alamos National Security L.L.C. under the auspices of the NNSA and the United States Department of Energy, under Contract No. DEAC52- 06NA25396. NR 7 TC 0 Z9 0 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 525 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100124 ER PT S AU Shaw, MS Coe, JD Sewell, TD AF Shaw, M. Sam Coe, Joshua D. Sewell, Thomas D. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI OPTIMIZED NESTED MARKOV CHAIN MONTE CARLO SAMPLING: APPLICATION TO THE LIQUID NITROGEN HUGONIOT USING DENSITY FUNCTIONAL THEORY SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE nitrogen; hugoniot; monte carlo; density functional ID PHASE-EQUILIBRIA; SIMULATION; ENSEMBLE; COMPRESSION AB An optimized version of the Nested Markov Chain Monte Carlo sampling method is applied to the calculation of the Hugoniot for liquid nitrogen. The "full" system of interest is calculated using density functional theory (DFT) with a 6-3IG* basis set for the configurational energies. The "reference" system is given by a model potential fit to the anisotropic pair interaction of two nitrogen molecules from DFT calculations. The EOS is sampled in the isobaric-isothermal (NPT) ensemble with a trial move constructed from many Monte Carlo steps in the reference system. The trial move is then accepted with a probability chosen to give the full system distribution. The P's and T's of the reference and full systems are chosen separately to optimize the computational time required to produce the full system EOS. The method is numerically very efficient and predicts a Hugoniot in excellent agreement with experimental data. C1 [Shaw, M. Sam; Coe, Joshua D.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. [Sewell, Thomas D.] Univ Missouri, Dept Chem, Columbia, MO 65211 USA. RP Shaw, MS (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. FU National Nuclear Security Administration (NNSA) Advanced Strategi Computing Program (HE-ASC); LANL Laboratory Directed Research and Development (LDRD) Program and by the Army Research Office [W91 lNF-05-1-0265]; Los Alamos National Security L.L.C.; NNSA; United States Department of Energy, [DE-AC52-06NA25396] FX JDC is a Director's Fellow at Los Alamos National Laboratory (LANL). MSS is supported by the LANL High Explosives Project of the National Nuclear Security Administration (NNSA) Advanced Strategi Computing Program (HE-ASC). TDS is supported by the LANL Laboratory Directed Research and Development (LDRD) Program and by the Army Research Office under Grant No. W91 lNF-05-1-0265. LANL is operated by Los Alamos National Security L.L.C. under the auspices of the NNSA and the United States Department of Energy, under Contract No. DE-AC52-06NA25396. NR 16 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 529 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100125 ER PT S AU Robbins, DL Sheffield, SA Dattelbaum, DM Velisavljevic, N Stahl, DB AF Robbins, David L. Sheffield, Stephen A. Dattelbaum, Dana M. Velisavljevic, Nenad Stahl, David B. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI EQUATION OF STATE OF AMMONIUM NITRATE SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE equation of state; ammonium nitrate; high pressure; diamond anvil cell; Hugoniot ID DETONATION; DIAMETER AB Ammonium nitrate (AN) is a widely used fertilizer and mining explosive. AN is commonly used in ammonium nitrate-fuel oil (ANFO), which is a mixture of explosive-grade AN prills and fuel oil in a 94:6 ratio by weight. ANFO is a non-ideal explosive with measured detonation velocities around 4 km/s. The equation of state properties and known initiation behavior of neat AN are limited. We present the results of a series of gas gun-driven plate impact experiments on pressed neat ammonium nitrate at 1.72 g/cm(3). No evidence of initiation was observed under shock loading to 22 GPa. High pressure x-ray diffraction experiments in diamond anvil cells provided insight into the high pressure phase behavior over the same pressure range (to 25 GPa), as well as a static isotherm at ambient temperature. From the isotherm and thermodynamic properties at ambient conditions, a preliminary unreacted equation of state (EOS) has been developed based on the Murnaghan isotherm and Helmholtz formalism [1], which compares favorably with the available experimental Hugoniot data on several densities of AN. C1 [Robbins, David L.; Sheffield, Stephen A.; Dattelbaum, Dana M.; Velisavljevic, Nenad; Stahl, David B.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Robbins, DL (reprint author), Los Alamos Natl Lab, MS P952, Los Alamos, NM 87545 USA. NR 15 TC 6 Z9 6 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 552 EP 555 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100131 ER PT S AU Chisolm, ED Crockett, SD Shaw, MS AF Chisolm, Eric D. Crockett, Scott D. Shaw, M. Sam BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI SHOCK HUGONIOTS OF MOLECULAR LIQUIDS AND THE PRINCIPLE OF CORRESPONDING STATES SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE molecular liquid; corresponding states; Hugoniot ID HIGH-DENSITY AB We observe that the shock velocity-particle velocity Hugoniots for various liquids (e.g. nitrogen, oxygen, carbon dioxide, argon) lie almost on top of one another. Recalling the work of Ross and Ree [J. Chem. Phys. 73, 6146-6152 (1980)], we hypothesize that these materials obey a principle of corresponding states. We use the principle to deduce how the Hugoniots of two corresponding materials should be related, and we compare the results with data and find good agreement. We suggest this as a method for estimating the Hugoniot of a material of the appropriate type in the absence of shock data, and we illustrate with fluorine. C1 [Chisolm, Eric D.; Crockett, Scott D.; Shaw, M. Sam] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Chisolm, ED (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. NR 4 TC 2 Z9 2 U1 0 U2 3 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 556 EP 559 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100132 ER PT S AU Briggs, ME Hull, LM Shinas, MA AF Briggs, Matthew E. Hull, Lawrence M. Shinas, Michael A. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI FUNDAMENTAL EXPERIMENTS IN VELOCIMETRY SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Velocimetry; phasors; ballistics; interferometers; shock ID SURFACE AB One can understand what velocimetry does and does not measure by understanding a few fundamental experiments. Photon Doppler Velocimetry (PDV) is an interferometer that will produce fringe shifts when the length of one of the legs changes, so we might expect the fringes to change whenever the distance from the probe to the target changes. However, by making PDV measurements of tilted moving surfaces, we have shown that fringe shifts from diffuse surfaces are actually measured only from the changes caused by the component of velocity along the beam. This is an important simplification in the interpretation of PDV results, arising because surface roughness randomizes the scattered phases. C1 [Briggs, Matthew E.; Hull, Lawrence M.; Shinas, Michael A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Briggs, ME (reprint author), Los Alamos Natl Lab, POB 1663,MSP940, Los Alamos, NM 87545 USA. NR 6 TC 7 Z9 7 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 577 EP 580 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100136 ER PT S AU Dolan, DH AF Dolan, D. H. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI WHAT DOES "VELOCITY" INTERFEROMETRY REALLY MEASURE? SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE velocimetry; PDV; interferometer; transverse velocity ID DOPPLER-SHIFT; VELOCIMETRY; SURFACE AB Optical interferometers are commonly used to measure velocity in dynamic compression experiments. Although the basic function of these interferometers is typically straightforward, there are situations where their operation becomes unclear. In many cases, "velocity" interferometers are sensitive to changes in target position, and velocity is approximated over some finite time duration. However, interference fringes can he observed despite the lack of any obvious displacement, while in other situations, no interference fringes are observed when displacement is seemingly evident. This apparent contradiction stems from an intuitive, but incorrect, notion of interferometer operation. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Dolan, DH (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 13 TC 8 Z9 8 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 589 EP 594 PG 6 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100139 ER PT S AU Bless, SJ Tolman, J Levinson, S Nguyen, J AF Bless, S. J. Tolman, J. Levinson, S. Nguyen, J. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI IMPROVED BAR IMPACT TESTS USING A PHOTONIC DOPPLER VELOCIMETER SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Glass; PDV AB Bar impact tests, using the techniques described elsewhere in this symposium, were used to measure compressive and tensile strengths of borosilicate glass, soda lime glass, and a glass ceramic. The glass ceramic was 25% crystalline spinel, furnished by Corning Inc. There are two measures of compressive strength: the peak stress that can be transmitted in unconfined compression, and the "steady state" strength. For borosilicate glass and soda lime glass, these values were similar, being about 1.8 and 1.5 GPa, respectively. The glass ceramic (25% spinel) was almost 50% stronger. Tensile failure in the glass and glass ceramic takes places via surface flaws, and thus tensile strength is an extrinsic, as opposed to intrinsic property. C1 [Bless, S. J.; Tolman, J.; Levinson, S.] Univ Texas Austin, Inst Adv Technol, Austin, TX 78759 USA. [Nguyen, J.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Bless, SJ (reprint author), Univ Texas Austin, Inst Adv Technol, Austin, TX 78759 USA. NR 6 TC 1 Z9 1 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 615 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100145 ER PT S AU Ao, T Hickman, RJ Payne, SL Trott, WM AF Ao, T. Hickman, R. J. Payne, S. L. Trott, W. M. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI LINE-IMAGING ORVIS MEASUREMENTS OF INTERFEROMETRIC WINDOWS UNDER QUASI-ISENTROPIC COMPRESSION SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE ICE (isentropic compression experiments); pulsed power; line-imaging ORVIS; windows AB A line-imaging optically recording velocity interferometer system (ORVIS) has been implemented on the Veloce pulsed power generator to enable measurement of spatially resolved velocity histories of materials under dynamic compression. Interferometric windows are regularly used to maintain the high-pressure state of shock and ramp (quasi-isentropic) loaded materials. Although imaging through a shock or fast ramp (<= 10 ns) loaded window material has been reasonably successful, for slower ramp loading (similar to 440 ns) experiments, the elastic-plastic yielding of the window has an adverse effect on return light to the line-imaging ORVIS. The results of quasi-isentropic loading experiments with various interferometric windows such as LiF, PMMA, NaCl, quartz and sapphire are presented. C1 [Ao, T.; Hickman, R. J.; Trott, W. M.] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. [Payne, S. L.] Natl Secur Technol, Albuquerque, NM 87185 USA. RP Ao, T (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. FU U.S. Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000] FX Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the U.S. Department of Energy's National Nuclear Security Administration under Contract No. DE-AC04-94AL85000. NR 11 TC 1 Z9 1 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 619 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100146 ER PT S AU Reed, EJ Armstrong, MR Kim, KY Glownia, JH Howard, WM Piner, EL Roberts, JC AF Reed, Evan J. Armstrong, Michael R. Kim, Ki-Yong Glownia, James H. Howard, William M. Piner, Edwin L. Roberts, John C. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI COHERENT THZ ELECTROMAGNETIC RADIATION EMISSION AS A SHOCK WAVE DIAGNOSTIC AND PROBE OF ULTRAFAST PHASE TRANSFORMATIONS SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE CdSe; phase transformation; shock wave; molecular dynamics; THz radiation AB We present the first experimental observations of terahertz frequency radiation emitted when a terahertz frequency acoustic wave propagates past an interface between materials of differing piezoelectric coefficients. We show that this fundamentally new phenomenon can be used to probe structural properties of thin films. Then, we present molecular dynamics simulations showing that detectable THz frequency radiation can be emitted when a wurtzite structure crystal transforms to a rocksalt structure under shock compression on picosecond timescales. We show that information about the kinetics of the transformation is contained in the time-dependence of the THz field. C1 [Reed, Evan J.; Armstrong, Michael R.; Howard, William M.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. [Kim, Ki-Yong; Glownia, James H.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Piner, Edwin L.; Roberts, John C.] Nitronex Corp, Durham, NC 27703 USA. RP Reed, EJ (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RI Armstrong, Michael/I-9454-2012; Piner, Edwin/B-5359-2016 FU U.S. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344] FX We thank R. Averitt, C. Bolme, P. Celliers, R. Chau, R. Collins, J. Eggert, L. Fried, D. Funk, D. Hicks, N. Holmes, A. Lindenberg, D. Moore, J. Nguyen, R.Patterson, and C. Tarver for helpful discussions. This work was supported by the LLNL LDRD program, the LANL CINT user program, and performed in part under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. NR 7 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 647 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100153 ER PT S AU Murphy, MJ Adrian, RJ AF Murphy, Michael J. Adrian, Ronald J. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI CHARACTERIZING DETONATOR OUTPUT USING DYNAMIC WITNESS PLATES SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Detonator; Shock Wave; Dynamic Witness Plate; PIV ID WAVES AB A sub-microsecond, time-resolved micro-particle-image velocimetry (PIV) system is developed to investigate the output of explosive detonators. Detonator output is directed into a transparent solid that serves as a dynamic witness plate and instantaneous shock and material velocities are measured in a two-dimensional plane cutting through the shock wave as it propagates through the solid. For the case of unloaded initiators (e.g. exploding bridge wires, exploding foil initiators, etc.) the witness plate serves as a surrogate for the explosive material that would normally be detonated. The velocity-field measurements quantify the velocity of the shocked material and visualize the geometry of the shocked region. Furthermore, the time-evolution of the velocity-field can be measured at intervals as small as 10 ns using the PIV system. Current experimental results of unloaded exploding bridge wire output in polydimethylsiloxane (PDMS) witness plates demonstrate 20 MHz velocity-field sampling just 300 ns after initiation of the wire. C1 [Murphy, Michael J.] LANL, W-6 Detonator Technol,MS P950, Los Alamos, NM 87545 USA. [Adrian, Ronald J.] Arizona State Univ, Mech & Aerosp Engn, Tempe, AZ 85287 USA. RP Murphy, MJ (reprint author), LANL, W-6 Detonator Technol,MS P950, Los Alamos, NM 87545 USA. NR 8 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 655 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100155 ER PT S AU Balakumar, BJ Prestridge, KP Orlicz, G Balasubramanian, S Tomkins, C AF Balakumar, B. J. Prestridge, K. P. Orlicz, G. Balasubramanian, S. Tomkins, C. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI HIGH RESOLUTION EXPERIMENTAL MEASUREMENTS OF RICHTMYER-MESHKOV TURBULENCE IN FLUID LAYERS AFTER RESHOCK USING SIMULTANEOUS PIV-PLIF SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Richtmyer Meshkov; Turbulence; Instability; PIV; PLIF; Mixing; density self correlation ID INSTABILITY AB True ensemble-averaged density self-correlation and Reynolds stress turbulence statistics in a Richtmyer-Meshkov unstable fluid layer after reshock are measured for the first time using simultaneous Particle-Image Velocimetry (PIV)-Planar Laser-Induced Fluorescence (PLIF) diagnostic. These high-quality experiments with advanced diagnostics provide important insights into the physics of RM turbulence that cannot be obtained using simple shadowgraphy or Schlieren diagnostics. The double peaked nature of the density self-correlation and the asymmetric character of the Reynolds stress distributions are discussed. Error estimates and convergence rates for several turbulence quantities are also provided. C1 [Balakumar, B. J.; Prestridge, K. P.; Orlicz, G.; Balasubramanian, S.; Tomkins, C.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Balakumar, BJ (reprint author), Los Alamos Natl Lab, Mail Stop H803, Los Alamos, NM 87545 USA. RI Prestridge, Kathy/C-1137-2012 OI Prestridge, Kathy/0000-0003-2425-5086 NR 7 TC 0 Z9 0 U1 0 U2 3 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 659 EP 662 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100156 ER PT S AU Clarke, SA Landon, CD Murphy, MJ Martinez, ME Mason, TA Thomas, KA AF Clarke, S. A. Landon, C. D. Murphy, M. J. Martinez, M. E. Mason, T. A. Thomas, K. A. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI DETONATOR PERFORMANCE CHARACTERIZATION USING MULTI-FRAME LASER SCHLIEREN IMAGING SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE detonators; schlieren; EPIC; genetic algorithms ID VISUALIZATION; WAVES AB Several experiments that are part of a phased plan to understand the evolution of detonation in a detonator from initiation shock through run to detonation to full detonation to transition to booster and booster detonation will be presented. High speed laser schlieren movies have been used to study several explosive initiation events, such as exploding bridgewires (EBW), exploding foil initiators (EFI) (or slappers), direct optical initiation (DOI), and electrostatic discharge (ESD). Additionally, a series of tests have been performed on "cut-back" detonators with varying initial pressing (IP) heights. We have also used this diagnostic to visualize a range of EBW, EFI, and DOI full-up detonators. Future applications to other explosive events such as boosters and IHE booster evaluation will be discussed. The EPIC hydrodynamic code has been used to analyze the shock fronts from the schlieren images to reverse calculate likely boundary or initial conditions to determine the temporal-spatial pressure profile across the output face of the detonator. LA-UR-05099 C1 [Clarke, S. A.; Murphy, M. J.; Martinez, M. E.; Mason, T. A.; Thomas, K. A.] Los Alamos Natl Lab, W-6 Detonator Technol, Los Alamos, NM 87545 USA. [Landon, C. D.] MIT, Dept Engn Mech, Cambridge, MA 02139 USA. [Murphy, M. J.] Arizona State Univ, Mech & Aerosp Engn, Tempe, AZ 85287 USA. RP Clarke, SA (reprint author), Los Alamos Natl Lab, W-6 Detonator Technol, Los Alamos, NM 87545 USA. FU DOD/DOE Munitions Program; Advanced Initiation Systems Project; DOE Campaign 5 - Enhanced Surety; DOE Campaign 8 - Enhanced Surveillance at Los Alamos National Lab; LLC [DE-AC52-06NA25396] FX Funding was provided by the Joint DOD/DOE Munitions Program, Advanced Initiation Systems Project, DOE Campaign 5 - Enhanced Surety and DOE Campaign 8 - Enhanced Surveillance at Los Alamos National Lab. Los Alamos National Lab isoperated by Los Alamos National Security, LLC, under Contract No. DE-AC52-06NA25396 with the U.S. Department of Energy NR 12 TC 0 Z9 0 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 663 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100157 ER PT S AU Merrill, FE Golubev, AA Mariam, FG Turtikov, VI Varentsov, D AF Merrill, F. E. Golubev, A. A. Mariam, F. G. Turtikov, V. I. Varentsov, D. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI PROTON MICROSCOPY AT FAIR SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE proton radiography; flash radiography; dynamic imaging ID RADIOGRAPHY AB Proton radiography was invented in the 1990's at Los Alamos National Laboratory (LANL) as a diagnostic to study dynamic material properties under extreme pressures, strain and strain rate. Since this time hundreds of dynamic proton radiography experiments have been performed at LANL and a facility has been commissioned at the Institute for Theoretical and Experimental Physics (ITEP) in Russia for similar applications in dynamic material studies. Recently an international effort has investigated a new proton radiography capability for the study of dynamic material properties at the Facility for Anti-proton and Ion Research (FAIR) located in Darmstadt, Germany. This new Proton microscope for FAIR (PRIOR) will provide radiographic imaging of dynamic systems with unprecedented spatial, temporal and density resolution, resulting in a window for understanding dynamic material properties at new length scales. It is also proposed to install the PRIOR system at the GSI Helmholtzzentrum fir Schwerionenforschung before installation at FAIR for dynamic experiments with different drivers including high explosives, pulsed power and lasers. The design of the proton microscope and expected radiographic performance is presented. C1 [Merrill, F. E.; Mariam, F. G.] Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87544 USA. [Varentsov, D.] GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany. [Golubev, A. A.; Turtikov, V. I.] Inst Theoret & Expt Phys, Moscow 117269, Russia. RP Merrill, FE (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87544 USA. OI Merrill, Frank/0000-0003-0603-735X NR 8 TC 17 Z9 17 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 667 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100158 ER PT S AU Davis, JP Knudson, MD AF Davis, Jean-Paul Knudson, Marcus D. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI MULTI-MEGABAR MEASUREMENT OF THE PRINCIPAL QUASI-ISENTROPE FOR TANTALUM SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE isentropic compression; tantalum; equation of state; experiment design ID COMPRESSION AB Quasi-isentropic ramp-loading experiments promise accurate equation-of-state (EOS) data in the solid phase at relatively low temperatures and multi-megabar pressures. Isentropic compression experiments (ICE) using the Z Machine at Sandia as a magnetic drive have recently seen significant improvements in accuracy and pressure range, due to (1) a major refurbishment and upgrade of the accelerator, (2) the development of a stripline target configuration, and (3) new experiment design and data analysis approaches. After a brief discussion of these improvements, new data are presented for the principal quasi-isentrope of tantalum. C1 [Davis, Jean-Paul; Knudson, Marcus D.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Davis, JP (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 11 TC 7 Z9 7 U1 1 U2 8 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 673 EP 676 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100159 ER PT S AU McNaney, JM Torralva, B Lorenz, KT Remington, BA Wall, M Kumar, M AF McNaney, J. M. Torralva, B. Lorenz, K. T. Remington, B. A. Wall, M. Kumar, M. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI SHOCKLESS LOADING WITH RECOVERY FOR CHARACTERIZATION OF MATERIAL RESPONSE SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE shockless; recovery; high strain rate ID ISENTROPIC COMPRESSION EXPERIMENTS; Z-ACCELERATOR; SOLIDS AB A new recovery method for investigating material response to shockless (ramped) loading paths is described. The work makes use of a laser generated plasma piston that produces ramped loading at high strain rates (>approximate to 10(7)/s). Large sample sizes are utilized to prevent reflected wave interactions. The overall deformation path is characterized by two transients: one at very high strain rate on the 5-10 nanosecond time scale and one at a lower strain rate occurring over a 1-2 microsecond timescale. It was found that a sufficiently large region of material experiences shockless loading conditions enabling recovery based characterization. The presence of two strain transients makes the method more applicable to comparative assessments between shockless and shock loading conditions. C1 [McNaney, J. M.; Torralva, B.; Lorenz, K. T.; Remington, B. A.; Wall, M.; Kumar, M.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP McNaney, JM (reprint author), Lawrence Livermore Natl Lab, L-356, Livermore, CA 94551 USA. RI McNaney, James/F-5258-2013 NR 14 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 677 EP 680 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100160 ER PT S AU Greeff, CW Rudin, SP Crockett, SD Wills, JM AF Greeff, C. W. Rudin, S. P. Crockett, S. D. Wills, J. M. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI THE COLD EQUATION OF STATE OF TANTALUM SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Tantalum; Isentropic Compression; Density Functional Theory ID PHONON DISPERSIONS; FORCE-CONSTANTS; TOTAL-ENERGY; COMPRESSION AB In high-pressure isentropic compression experiments (ICE), the pressure is dominated by the cold curve. In order to obtain an accurate semi-empirical cold curve for Ta, we calculate the thermal pressure from ab initio phonon and electronic excitation spectra. The cold curve is then inferred from ultrasonic and shock data. Our empirical cold pressure is compared to density functional calculations and found to be closer to the generalized gradient approximation at low pressure and to approach the local density approximation at high pressure. C1 [Greeff, C. W.; Rudin, S. P.; Crockett, S. D.; Wills, J. M.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Greeff, CW (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. RI Greeff, Carl/N-3267-2013; OI Greeff, Carl/0000-0003-0529-0441 NR 20 TC 4 Z9 4 U1 0 U2 4 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 681 EP 684 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100161 ER PT S AU Jensen, BJ Esparza, J AF Jensen, B. J. Esparza, J. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI DEVELOPMENT OF THE LARGE-BORE POWDER GUN FOR THE NEVADA TEST SITE SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE powder gun; large-bore; multiphase EOS; PDV velocimetry AB Plate-impact experiments on single stage guns provide very planar loading conditions suitable for studying complex phenomena such as phase transitions and material strength, and provide important data useful for constraining and validating predictive models. The objective of the current work was to develop a large-bore (3.5 '' or greater) powder gun capable of accelerating projectiles to moderately high velocities (greater than 2.25 km/s) for impact experiments at Nevada Test Site. This gun will span a performance gap between existing gun facilities and provide a means of examining phenomena over a wide range of stresses and time-scales. Advantages of the large-bore gun include the capability to load multiple samples simultaneously, the use of large diameter samples that significantly extend the time duration of the experiment, and minimal tilt (no bow). This new capability required the development of a disposable confinement system that used an explosively driven closure method to prevent contamination from moving up into the gun system. Experimental results for both the gun system and the explosive valve are presented. C1 [Jensen, B. J.; Esparza, J.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Jensen, BJ (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 6 TC 2 Z9 2 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 685 EP 688 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100162 ER PT S AU Ao, T AF Ao, T. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI QUASI-ISENTROPIC COMPRESSION OF MATERIALS USING THE MAGNETIC LOADING TECHNIQUE SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE ICE (isentropic compression experiments); pulsed power; strength; aluminum; lithium fluoride ID SHOCK-WAVE; SAPPHIRE; ALUMINUM; GPA AB The magnetic loading technique using pulsed power generators was first developed about a decade ago on the Z Accelerator, and has matured significantly. The recent development of small, pulsed power generators have enabled several key issues in isentropic compression experiments (ICE), such as panel design, sample preparation, and uniformity of loading to be studied. Veloce is a medium-voltage, high-current, compact pulsed power generator developed for cost effective isentropic experiments. The machine delivers similar to 2.5 MA of current rapidly (similar to 440-530 ns) into an inductive load where significant magnetic pressures are produced. Examples of recent material strength measurements from quasi-isentropic loading and unloading of materials are presented. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Ao, T (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 18 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 689 EP 694 PG 6 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100163 ER PT S AU Chantrenne, S Wise, JL Asay, JR Kipp, ME Hall, CA AF Chantrenne, S. Wise, J. L. Asay, J. R. Kipp, M. E. Hall, C. A. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI DESIGN OF A SAMPLE RECOVERY ASSEMBLY FOR MAGNETIC RAMP-WAVE LOADING SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Recovery; stress; ALEGRA; fracture AB In order to generate new properties of metals exposed to high pressure states, it is desirable to study samples loaded in one-dimensional strain. Previous work to obtain these ideal conditions, involve a technique where the sample was recovered at late times to examine its microstructure. In those experiments, the shock-loading was produced by impacting the sample with a flyer plate. In the present work, we modified the sample recovery assembly and optimized it for ramp wave loading. We describe the 2-D calculations performed with the ALEGRA MHD code that led to improved recovery assembly efficiency. Preliminary comparisons of the simulations with measurements of the sample deformation from an experiment indicate excellent agreement. C1 [Chantrenne, S.] Sci Applicat Int Corp, 2109 Air Pk Rd SE, Albuquerque, NM 87185 USA. [Wise, J. L.; Asay, J. R.; Kipp, M. E.; Hall, C. A.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Chantrenne, S (reprint author), Sci Applicat Int Corp, 2109 Air Pk Rd SE, Albuquerque, NM 87185 USA. FU Sandia National Laboratorie; United States Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000.] FX Funding was provided by Sandia National Laboratories. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration under Contract DE-AC04-94AL85000. NR 10 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 695 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100164 ER PT S AU Baer, MR Root, S Dattelbaum, D Hooks, DE Gustavsen, RL Orler, B Pierce, T Garcia, F Vandersall, K De Fisher, S Travers, B AF Baer, M. R. Root, S. Dattelbaum, D. Hooks, D. E. Gustavsen, R. L. Orler, B. Pierce, T. Garcia, F. Vandersall, K. De Fisher, S. Travers, B. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI SHOCKLESS COMPRESSION STUDIES OF HMX-BASED EXPLOSIVES SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Isentropic compression; Z accelerator; polymer binders; energetic composites; CTH modeling AB Several HMX-based explosive samples were subjected to shockless compression using Sandia's Z magnetic compression accelerator. A multi-panel ICE configuration containing various thicknesses of energetic composites PBX9501, PBXN9, LX-10 was subjected to ramp loading up to 320 Kbar over 500 ns. A Velocity Interferometer System for Any Reflector (VISAR) was used to measure transmitted wave profile data of particle velocity and forward and backward procedures were used with an optimization method to determine appropriate EOS data. C1 [Baer, M. R.; Root, S.] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. [Dattelbaum, D.; Hooks, D. E.; Gustavsen, R. L.; Orler, B.; Pierce, T.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Garcia, F.; Vandersall, K.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [De Fisher, S.; Travers, B.] US Army ARDEC, Picatinny Arsenal, NJ 07806 USA. RP Baer, MR (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. FU US Dept of Energy's NNSA [DE-AC04-94AL85000]; DoD/DOE MOU IMP program FX The authors thank M. Hobbs for his help with the optimization used in the modeling and the assistance of the personnel at the Sandia Z facility. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the US Dept of Energy's NNSA under contract DE-AC04-94AL85000 and funding for this work was supported by the DoD/DOE MOU IMP program. NR 7 TC 2 Z9 2 U1 0 U2 3 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 699 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100165 ER PT S AU Reed, BW Minich, RW Stolken, JS Kumar, M AF Reed, B. W. Minich, R. W. Stolken, J. S. Kumar, M. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI FREE SURFACE VELOCIMETRY CORRECTIONS FOR LOW PRESSURE SHOCKS SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Shock waves; velocimetry; velocity doubling ID SOLIDS; WAVES AB We consider how to interpret measured free surface velocities to estimate what a relatively weak shock (with an elastic-plastic two-wave structure, similar to 5-30 GPa) would have looked like in an infinite sample. Hysteresis and nonlinear wave interactions introduce effects (inexact velocity doubling and the delay, partial reflection, and reverberation of waves) whose magnitudes can be estimated with simple models. We argue, and demonstrate in a simulated test case, that these estimates can eliminate most of the systematic error introduced by the free surface during loading. C1 [Reed, B. W.; Minich, R. W.; Stolken, J. S.; Kumar, M.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Reed, BW (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RI Reed, Bryan/C-6442-2013 NR 8 TC 3 Z9 3 U1 0 U2 4 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 719 EP 722 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100170 ER PT S AU Florando, JN Jiao, T Grunschel, SE Clifton, RJ Lassila, DH Ferranti, L Becker, RC Minich, RW Bazan, G AF Florando, J. N. Jiao, T. Grunschel, S. E. Clifton, R. J. Lassila, D. H. Ferranti, L. Becker, R. C. Minich, R. W. Bazan, G. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI HIGH RATE PLASTICITY UNDER PRESSURE USING A WINDOWED PRESSURE-SHEAR IMPACT EXPERIMENT SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE transverse waves; vanadium; strength ID COMPRESSION; ALUMINUM AB An experimental technique has been developed to study the strength of materials under conditions of moderate pressures and high shear strain rates. The technique is similar to the traditional pressure-shear plate-impact experiments except that window interferometry is used to measure both the normal and transverse particle velocities at a sample-window interface. Experimental and simulation results on vanadium samples backed with a sapphire window show the utility of the technique to measure the flow strength under dynamic loading conditions. The results show that the strength of the vanadium is approximately 600 MPa at a pressure of 4.5 GPa and a plastic strain of 1.7%. C1 [Florando, J. N.; Lassila, D. H.; Ferranti, L.; Becker, R. C.; Minich, R. W.; Bazan, G.] Lawrence Livermore Natl Lab, 7000 E Ave, Livermore, CA 94551 USA. [Jiao, T.; Grunschel, S. E.; Clifton, R. J.] Brown Univ, Div Engn, Providence, RI 02912 USA. [Grunschel, S. E.] US Army Res Lab, Aberdeen Proving Ground, MD 21005 USA. RP Florando, JN (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave, Livermore, CA 94551 USA. RI Becker, Richard/I-1196-2013 FU LLNL Laboratory Directed Research and Development; WCI "Dynamics of Metals" program FX Funding was provided by the LLNL Laboratory Directed Research and Development and the WCI "Dynamics of Metals" programs. The authors would like to thank Hoang Nguyen and Tom Carlson for lithography and etching of the gratings, Johann Lotscher and Philip Ramsey for the vanadium coatings, and Tien Shen for discussions regarding application of the Steinberg-Lund model to vanadium. NR 12 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 723 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100171 ER PT S AU Kaul, AM Holtkamp, D Rodriguez, G AF Kaul, A. M. Holtkamp, D. Rodriguez, G. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI DAMAGE EXPERIMENTS IN CYLINDRICAL GEOMETRY UPDATE SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Fracture; shock-wave effects; impact tests AB Using a cylindrical configuration to study spallation damage allows for a natural recollection of the damaged material under proper driving conditions. Previous experiments provided data about failure initiation in aluminum in a cylindrical geometry and the behavior of material recollected after damage from pressures in the damage initiation regime. The current series of experiments studied the behavior of material recollected after complete failure. Results from the current experiments will be presented. C1 [Kaul, A. M.; Holtkamp, D.; Rodriguez, G.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Kaul, AM (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. RI Rodriguez, George/G-7571-2012 OI Rodriguez, George/0000-0002-6044-9462 NR 2 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 731 EP 734 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100173 ER PT S AU Goldman, N Reed, EJ Fried, LE AF Goldman, Nir Reed, Evan J. Fried, Laurence E. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI NUCLEAR QUANTUM VIBRATIONAL EFFECTS IN SHOCK HUGONIOT TEMPERATURES SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Hugoniot temperature; molecular dynamics; quantum effects ID MOLECULAR-DYNAMICS AB We present a straightforward method for the inclusion of quantum nuclear vibrational effects in molecular dynamics calculations of shock Hugoniot temperatures. Using a Gruneisen equation of state and a quasi-harmonic approximation to the vibrational energies, we derive a simple, post-processing method for calculation of the quantum corrected Hugoniot temperatures. We have used our technique on ab initio simulations of shock compressed water. Our results indicate significantly closer agreement with all available experimental temperature data. Our formalism and technique can be easily applied to a number of different shock compressed molecular liquids or solids. C1 [Goldman, Nir; Reed, Evan J.; Fried, Laurence E.] LLNL, Livermore, CA 94550 USA. RP Goldman, N (reprint author), LLNL, 7000 E Ave,L-282, Livermore, CA 94550 USA. RI Fried, Laurence/L-8714-2014 OI Fried, Laurence/0000-0002-9437-7700 NR 14 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 757 EP 760 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100179 ER PT S AU Germann, TC AF Germann, Timothy C. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI LARGE-SCALE CLASSICAL MOLECULAR DYNAMICS SIMULATIONS OF SHOCK-INDUCED PLASTICITY IN BCC NIOBIUM SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Molecular dynamics; niobium; bcc plasticity; phase transitions ID WAVES AB Large-scale classical molecular dynamics simulations arc used to study the response of bcc Nb to shock compression, for perfect crystals in the [100] and [110] orientations. An embedded atom method (EAM) potential due to Johnson and Oh is used to describe the interatomic forces. Both orientations exhibit a bee-hcp phase transformation at shock pressures above similar to 75 GPa. Although a similar transformation occurs in Fe and other bcc metals, there is no experimental evidence for any such high-pressure hcp phase in Nb, so this may be an artifact of the EAM potential. For [110] loading we observe that plastic deformation appears to be primarily by twinning, consistent with previous electron microscopy studies of shock-loaded niobium. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Germann, TC (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. NR 12 TC 4 Z9 4 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 761 EP 764 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100180 ER PT S AU Pozzi, C Germann, TC Hoagland, RG AF Pozzi, C. Germann, T. C. Hoagland, R. G. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI MOLECULAR DYNAMICS SIMULATION OF DISLOCATION EMISSION FROM SHOCKED ALUMINUM GRAIN BOUNDARIES SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE molecular dynamics; aluminum; shock-loading; twinning ID INTERATOMIC POTENTIALS; METALS AB Molecular dynamics (MD) simulations were performed to examine the behavior of the asymmetric Sigma E11, < 110 > {252} {414} grain boundary (GB) in Aluminum under shock loading, with particular regard to the possibility of nucleation of deformation twins. For different shock strengths and interatomic potentials, we observe emission of perfect and partial dislocations from the GB and, in some cases, the formation of nanotwins. These features and their nucleation mechanisms, as related to the shock strength, GB energy, and simulation size, are discussed on the basis of our MD simulation results. C1 [Pozzi, C.; Hoagland, R. G.] Los Alamos Natl Lab, MST-8, Los Alamos, NM 87545 USA. [Pozzi, C.] Politecn Torino, DISMIC, Turin, Italy. [Germann, T. C.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Pozzi, C (reprint author), Los Alamos Natl Lab, MST-8, Los Alamos, NM 87545 USA. RI Hoagland, Richard/G-9821-2012 FU Laboratory Directed Research and Development (LDRD) program at Los Alamos National Laboratory (LANL); U.S. Department of Energy [DE-AC52-06NA25396] FX This work was supported by the Laboratory Directed Research and Development (LDRD) program at Los Alamos National Laboratory (LANL), which is operated by Los Alamos National Security, LLC, for the U.S. Department of Energy under contract DE-AC52-06NA25396. NR 8 TC 3 Z9 3 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 765 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100181 ER PT S AU Hammerberg, JE Holian, BL Germann, TC Ravelo, R AF Hammerberg, J. E. Holian, B. L. Germann, T. C. Ravelo, R. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI HIGH VELOCITY PROPERTIES OF THE DYNAMIC FRICTIONAL FORCE BETWEEN DUCTILE METALS SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Molecular dynamics; frictional force; plastic deformation; sliding friction; aluminum ID INTERFACES AB The high velocity properties of the tangential frictional force between ductile metal interfaces seen in large-scale NonEquilibrium Molecular Dynamics (NEMD) simulations are characterized by interesting scaling behavior. In many cases a power law decrease in the frictional force with increasing velocity is observed at high velocities. We discuss the velocity dependence of the high velocity branch of the tangential force in terms of structural transformation and ultimate transition, at the highest velocities, to confined fluid behavior characterized by a critical strain rate. The particular case of an Al/Al interface is discussed. C1 [Hammerberg, J. E.; Holian, B. L.; Germann, T. C.] Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. [Ravelo, R.] Univ Texas El Paso, Dept Phys, El Paso, TX 79968 USA. RP Hammerberg, JE (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. FU U.S. Dept. of Energy [DE-AC52-06NA25396] FX This work was performed under the auspices of the U.S. Dept. of Energy under contract DE-AC52-06NA25396. NR 9 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 777 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100184 ER PT S AU Mattsson, TR Magyar, RJ AF Mattsson, Thomas R. Magyar, Rudolph J. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI DENSITY FUNCTIONAL THEORY (DFT) SIMULATIONS OF SHOCKED LIQUID XENON SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE xenon; hugoniot density functional theory (DFT); molecular dynamics simulations ID INITIO MOLECULAR-DYNAMICS; AUGMENTED-WAVE METHOD; TRANSITION; EQUATION; STATE AB Xenon is not only a technologically important element used in laser technologies and jet propulsion, but it is also one of the most accessible materials in which to study the metal-insulator transition with increasing pressure. Because of its closed shell electronic configuration, xenon is often assumed to be chemically inert, interacting almost entirely through the van der Waals interaction, and at liquid density, is typically modeled well using Leonard-Jones potentials. However, such modeling has a limited range of validity as xenon is known to form compounds under normal conditions and likely exhibits considerably more chemistry at higher densities when hybridization of occupied orbitals becomes significant. We present DFT-MD simulations of shocked liquid xenon with the goal of developing an improved equation of state. The calculated Hugoniot to 2 MPa compares well with available experimental shock data. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000. C1 [Mattsson, Thomas R.] Sandia Natl Labs, HEDP Theory, POB 5800, Albuquerque, NM 87185 USA. [Magyar, Rudolph J.] Sandia Natl Labs, Multiscale Dynam Mat Modeling, Albuquerque, NM 87185 USA. RP Mattsson, TR (reprint author), Sandia Natl Labs, HEDP Theory, POB 5800, Albuquerque, NM 87185 USA. RI Mattsson, Thomas/B-6057-2009 FU NNSA science campaigns FX The work was supported by the NNSA science campaigns. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL8S000. NR 24 TC 9 Z9 9 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 797 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100189 ER PT S AU Selezenev, AA Aleynikov, AY Ganchuk, NS Ermakov, PV Ganchuk, SN Aidun, JB Thompson, AP AF Selezenev, A. A. Aleynikov, A. Yu. Ganchuk, N. S. Ermakov, P. V. Ganchuk, S. N. Aidun, J. B. Thompson, A. P. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI SHOCK COMPRESSION CALCULATION OF RDX AND PETN MOLECULAR CRYSTALS USING HUGONIOSTAT METHOD SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Molecular dynamics; Hugoniostat; uniaxial compression; shock wave ID SENSITIVITY AB The paper describes calculations of parameters for the uniaxial shock compressed RDX molecular crystal in the crystallographic direction [100] and PETN crystal in directions [100], [110] and [001] performed using a non-reacting interatomic force field with the help of the Hugoniostat method. For each crystallographic direction there have been obtained the relationships P-V, D-Up, T-P and T-Up on Hugoniot adiabat. C1 [Selezenev, A. A.; Aleynikov, A. Yu.; Ganchuk, N. S.; Ermakov, P. V.; Ganchuk, S. N.] Sarov Labs, Sarov 607200, Russia. [Aidun, J. B.; Thompson, A. P.] Sandia Natl Labs, POB 5890, Albuquerque, NM 87185 USA. RP Selezenev, AA (reprint author), Sarov Labs, Sarov 607200, Russia. FU Sandia National Laboratories; U.S. DOE/NNSA Advanced Simulation and Computing Program [DE-AC04-94AL8500] FX This work was partially supported by Sandia National Laboratories under U.S. DOE/NNSA Advanced Simulation and Computing Program under contract DE-AC04-94AL8500. NR 13 TC 1 Z9 1 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 821 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100195 ER PT S AU Ravelo, R Holian, BL Germann, TC AF Ravelo, Ramon Holian, Brad Lee Germann, Timothy C. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI HIGH STRAIN RATES EFFECTS IN QUASI-ISENTROPIC COMPRESSION OF SOLIDS SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Shock waves; high-pressure strength; phase transitions; metals; molecular dynamics ID DEFORMATION; MODEL AB We have performed large-scale molecular-dynamics (MD) simulations of shock loading and quasi-isentropic compression in defective copper crystals, modeling the interatomic interactions with an embedded-atom method potential. For samples with a relatively low density of pre-existing defects, the strain rate dependence of the flow stress follows a power law in the 10(9)-10(12) s(-1) regime with an exponent of 0.40. For initially damaged, isotropic crystals the flow stress exhibits a narrow linear region in strain rate, which then bends over at high strain rates in a manner reminiscent of shear thinning in fluids. The MD results can be described by a modification of Eyring's theory of Couette shear flow in fluids. C1 [Ravelo, Ramon] Univ Texas El Paso, Dept Phys, El Paso, TX 79968 USA. [Ravelo, Ramon; Holian, Brad Lee] Los Alamos Natl Lab, Div Appl Phys, Los Alamos, NM USA. [Germann, Timothy C.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM USA. RP Ravelo, R (reprint author), Univ Texas El Paso, Dept Phys, El Paso, TX 79968 USA. FU U.S. Department of Energy [DE-AC52-06NA25396] FX Part of this work was supported by the U.S. Department of Energy under contract DE-AC52-06NA25396. The authors thank Dr. James E. Hammerberg, for useful discussions and valuable comments. NR 10 TC 6 Z9 6 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 825 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100196 ER PT S AU Thompson, AP Lane, JMD Desjarlais, MP Baskes, MI AF Thompson, Aidan P. Lane, J. Matthew D. Desjarlais, Michael P. Baskes, Michael I. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI MOLECULAR DYNAMICS SIMULATION OF DYNAMIC RESPONSE OF BERYLLIUM SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Molecular dynamics; MEAM; thermodynamic and mechanical properties AB The response of beryllium to dynamic loading has been extensively studied, both experimentally and theoretically, due to its importance in several technological areas. Compared to other metals, it is quite challenging to accurately represent the various anomalous behaviors of beryllium using classical interatomic potentials. A new parameterization of the MEAM interatomic potential has been obtained, which reproduces ambient elastic and lattice constants, the melting temperature, and the static compression curve up to 200 GPa, and is free of obvious pathologies. Hugoniostat molecular dynamics simulations using this parameterization, as well as one due to Dremov et al. have been used to predict the dynamic response of HCP beryllium up to and including melting. C1 [Thompson, Aidan P.; Lane, J. Matthew D.; Desjarlais, Michael P.] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. [Baskes, Michael I.] Univ Calif San Diego, La Jolla, CA 92093 USA. RP Thompson, AP (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. FU Laboratory Directed Research; Development program at Sandia National Laboratories FX This work was supported by the Laboratory Directed Research and Development program at Sandia National Laboratories. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration under Contract DE-AC04-94AL85000. NR 15 TC 4 Z9 4 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 833 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100198 ER PT S AU Kress, JD Horner, DA Collins, LA AF Kress, J. D. Horner, D. A. Collins, L. A. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI MIXING RULES FOR OPTICAL AND TRANSPORT PROPERTIES OF WARM, DENSE MATTER SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Mixture rules; quantum molecular dynamics; warm dense matter; LiH; polyethylene; Al AB The warm, dense matter (WDM) regime requires a sophisticated treatment, since neither ideal gas laws or fully ionized plasma models apply. Mixtures represent the predominant form of matter throughout the universe and the ability to predict the properties of a mixture, through direct simulation or from convolution of the properties of the constituents is both a challenging prospect and an important goal. Through quantum molecular dynamics, we accurately simulate WDM and compute equations of state, transport, and optical properties of such materials, including mixtures, in a self-consistent manner from a single simulation. With the ability to directly compute the mixture properties, we are able to validate mixing rules for combining the optical and dynamical properties of Li and H separately to predict the properties of lithium hydride (LiH). We have examined two such mixing rules and extend them to morphologies beyond a simple liquid alloy. We have also studied a mixture of polyethylene and aluminum at T = 1 eV. C1 [Kress, J. D.; Horner, D. A.; Collins, L. A.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Kress, JD (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. NR 10 TC 1 Z9 1 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 931 EP 934 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100221 ER PT S AU Brambrink, E Wei, HG Barbrel, B Audebert, P Benuzzi, A Boehly, T Endo, T Gregory, CD Kimura, T Kodama, R Ozaki, N Park, HS le Gloahec, MR Koenig, M AF Brambrink, E. Wei, H. G. Barbrel, B. Audebert, P. Benuzzi, A. Boehly, T. Endo, T. Gregory, C. D. Kimura, T. Kodama, R. Ozaki, N. Park, H. -S. le Gloahec, M. Rabec Koenig, M. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI HARD X-RAYS AS A DIAGNOSTIC TOOL FOR WARM DENSE MATTER SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE hard x-ray radiography; direct density measurement AB We present the application of short-pulse laser-driven hard x-rays (>40 keV) for the direct density measurement of iron compressed by a laser-driven shock. By using an on-shot calibration of the line density, we are able to obtain line densities even though the x-ray source is not monochromatic. The consequences for the line density measurement using a polychromatic source are discussed in detail, as well as the calibration method we propose to solve this problem. C1 [Brambrink, E.; Wei, H. G.; Barbrel, B.; Audebert, P.; Benuzzi, A.; Gregory, C. D.; le Gloahec, M. Rabec; Koenig, M.] Ecole Polytech, Lab LULI, F-91128 Palaiseau, France. [Wei, H. G.] Shandong Univ, Jinan, Peoples R China. [Wei, H. G.] Chinese Acad Sci, Natl Astron Observ, Beijing, Peoples R China. [Barbrel, B.] CEA, DAM, Dept Phys Theor & Appl, Bruyeres Le Chatel, France. [Boehly, T.] Univ Rochester, Laser Energet Lab, Rochester, NY 14627 USA. [Endo, T.; Kimura, T.; Kodama, R.; Ozaki, N.] Osaka Univ, Grad Sch Engn, Suita, Osaka 5650871, Japan. [Park, H. -S.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Brambrink, E (reprint author), Ecole Polytech, Lab LULI, F-91128 Palaiseau, France. RI Kodama, Ryosuke/G-2627-2016 FU ANR project SECHEL; Core-to-Core program from the JSPS; Global COE Program, "Center for Electronic Devices Innovation", from the Ministry of Education, Culture, Sports, Science and Technology of Japan; region Ile-de-France FX We thank the crew of the LULI 2000 laser system for their ongoing help during the experiment. This work was supported by the ANR project SECHEL, the Core-to-Core program from the JSPS and the Global COE Program, "Center for Electronic Devices Innovation", from the Ministry of Education, Culture, Sports, Science and Technology of Japan. C.G was supported by grants from the region Ile-de-France. NR 3 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 935 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100222 ER PT S AU Chu, MQ Jones, IP Millett, JCF Bourne, NK Gray, GT AF Chu, M. Q. Jones, I. P. Millett, J. C. F. Bourne, N. K. Gray, G. T., III BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI THE EFFECT OF HEAT TREATMENT ON THE SHOCK RESPONSE OF THE ALUMINIUM ALLOY, 6061. SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Plate impact; 6061; shear strength; solution treatment; age hardened ID BEHAVIOR; STRESS; NICKEL; SPALL AB A series of shock loading experiments have been performed on two heat-treated states of the aluminium alloy, 6061; T0, a solution treated condition, and T6, a solution treated and fully aged state. Lateral stress measurements indicate the T6 condition is stronger than TO, as would be expected. Results also indicate that the rate of hardening behind the shock front is somewhat greater in T0 than T6, indicating a shift in deformation from one based upon the generation of, and storage of dislocations, to one where the presence of intermetallic precipitates appears to inhibit dislocation generation and storage processes. C1 [Chu, M. Q.; Jones, I. P.] Univ Birmingham, Dept Met & Mat Sci, Birmingham B15 2TT, W Midlands, England. [Millett, J. C. F.; Bourne, N. K.] AWE, Reading RG7 4PR, Berks, England. [Gray, G. T., III] Los Alamos Natl Lab, MST 8, Los Alamos, NM 87545 USA. RP Chu, MQ (reprint author), Univ Birmingham, Dept Met & Mat Sci, Birmingham B15 2TT, W Midlands, England. OI Jones, Ian/0000-0002-3948-8109 FU US Dept. of Energy FX The authors would like to thank Gary Cooper and Gareth Appleby-Thomas of Cranfield University for performing the shots. G.T. Gray III acknowledges the support of the US Dept. of Energy. British Crown Copyright MoD/2009. NR 15 TC 0 Z9 0 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 953 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100226 ER PT S AU Millett, JCF Bourne, NK Stirk, SM Gray, GT AF Millett, J. C. F. Bourne, N. K. Stirk, S. M. Gray, G. T., III BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI THE SHOCK RESPONSE OF THE MAGNESIUM-ALUMINIUM ALLOY, AZ61. SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Plate impact; magnesium alloy; shock velocity; Hugoniot; shear strength ID STRESS; GAUGES; AZ31; WAVE AB The response of the magnesium alloy, AZ61 to shock loading has been investigated in terms of it's Hugoniot (Equation of State) and variation of shear strength with impact stress. Comparison of the Hugoniot with that of the similar magnesium alloy AZ31 shows very little difference, and hence gives us confidence in our results. Measurement of the lateral stress shows a decrease behind the shock front which suggests a degree of time dependent hardening. Similar results have been observed in fcc metals, corresponding to observed increases in dislocation density in recovered samples. C1 [Millett, J. C. F.; Bourne, N. K.; Stirk, S. M.] AWE, Reading RG7 4PR, Berks, England. [Gray, G. T., III] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Millett, JCF (reprint author), AWE, Reading RG7 4PR, Berks, England. FU US Dept. of Energy FX The authors would like to thank Gary Cooper and Gareth Appleby-Thomas of Cranfield University for performing the shots, and Tim Cartwright of AWE for the EBSD work. G.T. Gray acknowledges the support of the US Dept. of Energy. British Crown Copyright/2009 NR 13 TC 2 Z9 2 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 957 EP + DI 10.1063/1.3295303 PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100227 ER PT S AU Skokov, VI Ignatova, ON Malyshev, AN Raevsky, VA Podurets, AM Tupanova, OA Zocher, MA AF Skokov, V. I. Ignatova, O. N. Malyshev, A. N. Raevsky, V. A. Podurets, A. M. Tupanova, O. A. Zocher, M. A. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI TEMPORAL SOFTENING AND ITS EFFECT UPON SPALL STRENGTH SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE strain rate; deformation; shock waves; heterogeneous deformation; spall strength AB Metals subjected to compressive shock of sufficient intensity often undergo microstructural changes involving deformation localization and temporal softening. Temporal softening has a significant effect on the formation of damage (the material is much more susceptible to damage during the period of temporal softening). The present on polycrystalline M1 copper clearly exhibits this phenomenon. C1 [Skokov, V. I.; Ignatova, O. N.; Malyshev, A. N.; Raevsky, V. A.; Podurets, A. M.; Tupanova, O. A.] Russian Fed Nucl Ctr, All Russia Res Inst Expt Phys, Nizhnii Novgorod 607190, Russia. [Zocher, M. A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Skokov, VI (reprint author), Russian Fed Nucl Ctr, All Russia Res Inst Expt Phys, Nizhnii Novgorod 607190, Russia. NR 10 TC 0 Z9 0 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 965 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100229 ER PT S AU Dalton, DA Worthington, DL Sherek, PA Pedrazas, NA Bernstein, AC Quevedo, HJ Rambo, P Schwarz, J Edens, A Geissel, M Smith, IC Taleff, EM Ditmire, T AF Dalton, D. A. Worthington, D. L. Sherek, P. A. Pedrazas, N. A. Bernstein, A. C. Quevedo, H. J. Rambo, P. Schwarz, J. Edens, A. Geissel, M. Smith, I. C. Taleff, E. M. Ditmire, T. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI SPALL AND DYNAMIC YIELDING OF ALUMINUM AND ALUMINUM ALLOYS AT STRAIN RATES OF 3x10(6) s(-1) SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Aluminum; VISAR; spall; fracture AB We have explored the role that grain size, impurity particles and alloying in aluminum play in dynamic yielding and spall fracture at tensile strain rates of similar to 3x10(6) We achieved these strain rates shocking the aluminum specimens via laser ablation using the Z-Beamlet Laser at Sandia National Laboratories. The high purity aluminum and 1100 series aluminum alloy produced very different spall strengths and nearly the same yield strengths. In contrast, various grain-sized Al + 3 wt. % Mg specimens presented the lowest spall strength, but the greatest dynamic yield strength. Fracture morphology results and particle analysis are presented along with hydrodynamic simulations to put these results in context. Impurity particles appeared to play a vital role in spall fracture at these fast strain rates. Alloying elements such as Mg seem to be the dominant factor in the dynamic yield results. C1 [Dalton, D. A.; Bernstein, A. C.; Quevedo, H. J.; Ditmire, T.] Univ Texas Austin, Dept Phys, 1 Univ Stn,C1600, Austin, TX 78712 USA. [Worthington, D. L.; Sherek, P. A.; Pedrazas, N. A.; Taleff, E. M.] Univ Texas Austin, Dept Mech Engn, Austin, TX 78712 USA. [Rambo, P.; Schwarz, J.; Edens, A.; Geissel, M.; Smith, I. C.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Dalton, DA (reprint author), Univ Texas Austin, Dept Phys, 1 Univ Stn,C1600, Austin, TX 78712 USA. FU Army Research Office and National Nuclear Security Administration; National Science Foundation [DMR-0605731] FX This work was supported by the Army Research Office and National Nuclear Security Administration. Support of the National Science Foundation under grant DMR-0605731 is gratefully acknowledged. NR 6 TC 0 Z9 0 U1 0 U2 3 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 969 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100230 ER PT S AU Reinhart, WD Asay, JR Chhabildas, LC Alexander, CS AF Reinhart, W. D. Asay, J. R. Chhabildas, L. C. Alexander, C. S. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI INVESTIGATION OF 6061-T6 ALUMINUM STRENGTH PROPERTIES TO 160 GPa SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Aluminum; melt; strength; shock; VISAR; three-stage gun ID IMPACT VELOCITIES; KM/S AB Shock compression experiments were performed on 6061-T6 aluminum up to 160 GPa to probe aluminum strength in the shocked state as it passes through the melt regime. A careful set of experiments, using established two and three stage flyer plate launch techniques were conducted using symmetric impact loading conditions to compress the aluminum through the solid to the liquid phase boundary. Velocity interferometry provides the fine structure of shock loading and release behavior almost as an in situ particle velocity wave profile at the aluminum/lithium fluoride window interface. Results are detailed in terms of wave speeds and estimates of strength of the material in the shocked state. C1 [Reinhart, W. D.; Alexander, C. S.] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. [Asay, J. R.] Ktech Corp Inc, Albuquerque, NM 87123 USA. [Chhabildas, L. C.] Air Force Res Lab, Eglin AFB, FL 32542 USA. RP Reinhart, WD (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. FU United States Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000] FX Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration under Contract DE-AC04-94AL85000. The authors gratefully acknowledge the vital assistance and effort of the dedicated staff of the Shock Thermodynamic Applied Research (STAR) facility with their effort of gun operations and target fabrication: Tom F. Thomhill, John R. Martinez, Robert A. Palomino, and Heidi M. Anderson. NR 19 TC 0 Z9 0 U1 1 U2 7 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 977 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100232 ER PT S AU Root, S Asay, JR AF Root, Seth Asay, James R. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI LOADING PATH DEPENDENCE OF INELASTIC BEHAVIOR: X-CUT QUARTZ SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE x-cut quartz; shockless compression; elastic; inelastic deformation ID SHOCK-WAVE COMPRESSION AB Shock and shockless compression methods were used to examine the loading path and rate dependence of single crystal x-cut quartz. Analysis of the transmitted wave profiles show remarkably different behavior between shock and shockless loaded samples. Shock loaded x-cut quartz shows inelastic deformation below 5 GPa. Ramp loaded samples do not show inelastic behavior until approximately 9 GPa, with the onset of this behavior dependent on sample thickness. The results demonstrate that both loading path and rate play important roles in the inelastic behavior of materials. C1 [Root, Seth; Asay, James R.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Root, S (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 13 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 999 EP 1002 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100237 ER PT S AU Luo, SN Germann, TC An, Q Han, LB AF Luo, Sheng-Nian Germann, Timothy C. An, Qi Han, Li-Bo BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI SHOCK-INDUCED SPALL IN COPPER: THE EFFECTS OF ANISOTROPY, TEMPERATURE, DEFECTS AND LOADING PULSE SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Shock; molecular dynamics; spall; anisotropy; Taylor wave; defects ID FAILURE; SOLIDS AB Shock-induced spall in Cu is investigated with molecular dynamics simulations. We examine spallation in initially perfect crystals and defective solids with grain boundaries (columnar bicrystals), stacking faults or vacancies, as well as the effect of temperature and loading pulses. Spall in single crystal Cu is anisotropic, and defects and high temperature may reduce the spall strength. Taylor-wave (triangular or decaying-shock) loading is explored in comparison with square wave shock loading. C1 [Luo, Sheng-Nian; Germann, Timothy C.; An, Qi] Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. [Han, Li-Bo] Univ Sci & Technol China, Sch Earth & Space Sci, Anhua 230026, Peoples R China. RP Luo, SN (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. RI An, Qi/G-4517-2011; An, Qi/I-6985-2012 FU LDRD programs at LANL; U.S. Department of Energy [DE-AC52-06NA25396]; NSFC [40574043, 40537033] FX S.N.L., T.C.G. and Q.A. have been supported by the LDRD programs at LANL. LANL is under the auspices of U.S. Department of Energy under contract No. DE-AC52-06NA25396. Some simulations were conducted on LANL's supercomputing systems, including RoadRunner. We have benefited from discussions with Drs. D. Tonks, L. Zheng, R Peralta, R. Dickerson, K. McClellan, D. Byler and A. Koskelo. L.B.H. acknowledges the support from NSFC Grant Nos. 40574043 and 40537033. NR 13 TC 2 Z9 2 U1 1 U2 5 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1015 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100241 ER PT S AU Vogler, TJ AF Vogler, T. J. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI DETERMINING MATERIAL STRENGTH IN RAMP LOADING EXPERIMENTS SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE strength; quasi-isentropic loading; plastic work; temperature ID COMPRESSION AB Comparison of the loading response from a ramp loading experiment to a hydrostatic response from an equation of state provides a simple means to determine high-pressure strength. For the comparison to be valid, it must be made at the same density and temperature. In order for the two states to have the same temperature, it is necessary to account for the heating due to plastic work that occurs in materials with strength. The effect of this heating on the calculated strength can be significant as demonstrated on data for tungsten and aluminum from the literature. C1 Sandia Natl Labs, Livermore, CA 94550 USA. RP Vogler, TJ (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA. NR 14 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1023 EP 1026 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100243 ER PT S AU Zellner, MB Dimonte, G Germann, TC Hammerberg, JE Rigg, PA Stevens, GD Turley, WD Buttler, WT AF Zellner, Michael B. Dimonte, Guy Germann, Timothy C. Hammerberg, James E. Rigg, Paulo A. Stevens, Gerald D. Turley, William D. Buttler, William T. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI INFLUENCE OF SHOCK WAVE PROFILE ON EJECTA SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Ejecta; Shockwave profile; Dynamic damage; Taylor Impact AB We investigate the relation between shock-pulse shape and the amount of micron-scale fragments ejected upon shock release at the metal/vacuum interface of shocked Sn targets. These micron-scale particles are commonly referred to as ejecta. Two shock-pulse shapes are considered: a supported shock created by impacting a Sn target with a sabot that was accelerated using a powder gun; and an unsupported or Taylor shockwave, created by detonation of high explosive that was press-fit to the front-side of the Sn target. Ejecta production at the back-side or free-surface of the Sn coupons were characterized through use of piezoelectric pins, Asay foils, optical shadowgraphy, and x-ray attenuation. C1 [Zellner, Michael B.; Dimonte, Guy; Germann, Timothy C.; Hammerberg, James E.; Rigg, Paulo A.; Buttler, William T.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Stevens, Gerald D.; Turley, William D.] Natl Secur Technol, Goleta, CA USA. RP Zellner, MB (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 10 TC 16 Z9 16 U1 0 U2 13 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1047 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100249 ER PT S AU Meyers, MA Jarmakani, HN Bringa, EM Earhart, P Remington, BA Vo, NQ Wang, YM AF Meyers, M. A. Jarmakani, H. N. Bringa, E. M. Earhart, P. Remington, B. A. Vo, N. Q. Wang, Y. M. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI LASER COMPRESSION OF NANOCRYSTALLINE METALS SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE laser shock; molecular dynamics; nanocrystalline metals; dislocations ID MOLECULAR-DYNAMICS SIMULATIONS AB Shock compression in nanocrystalline nickel is simulated over a range of pressures (10-80 GPa) and compared with experimental results. Laser compression carried out at Omega and Janus yields new information on the deformation mechanisms of nanocrystalline Ni. Although conventional deformation does not produce hardening, the extreme regime imparted by laser compression generates an increase in hardness, attributed to the residual dislocations observed in the structure by TEM. An analytical model is applied to predict the critical pressure for the onset of twinning in nanocrystalline nickel. The slip-twinning transition pressure is shifted from 20 GPa, for polycrystalline Ni, to 80 GPa, for Ni with g. s. of 10 nm. Contributions to the net strain from the different mechanisms of plastic deformation (partials, perfect dislocations, twinning, and grain boundary shear) were quantified in the nanocrystalline samples through MD calculations. The effect of release, a phenomenon often neglected in MD simulations, on dislocation behavior was established. A large fraction of the dislocations generated at the front are annihilated. C1 [Meyers, M. A.; Jarmakani, H. N.] Univ Calif San Diego, La Jolla, CA 92093 USA. [Bringa, E. M.; Earhart, P.; Remington, B. A.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Vo, N. Q.; Wang, Y. M.] Univ Illinois, Urbana, IL 61801 USA. RP Meyers, MA (reprint author), Univ Calif San Diego, La Jolla, CA 92093 USA. RI Vo, Nhon/E-4599-2010; Bringa, Eduardo/F-8918-2011; Meyers, Marc/A-2970-2016 OI Meyers, Marc/0000-0003-1698-5396 NR 10 TC 0 Z9 0 U1 0 U2 5 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1051 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100250 ER PT S AU Swift, DC Hawreliak, J El-Dasher, B McNaney, J Milathianaki, D Lorenzana, H Kumar, M Remington, B Tierney, TE AF Swift, Damian C. Hawreliak, James El-Dasher, Bassem McNaney, James Milathianaki, Despina Lorenzana, Hector Kumar, Mukul Remington, Bruce Tierney, Thomas E. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI FLOW STRESS OF V, Mo, Ta, AND W ON NANOSECOND TIME SCALES SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE shock; plasticity; solid-solid transition AB The mechanisms and kinetics of plastic flow in body-centered cubic materials arc of current interest in the development of fundamental theories of dynamic strength, applicable at high strain rates such as are found in high explosive and laser loading. We have performed dynamic loading experiments with the Janus and Trident lasers, using tailored pulse shapes to induce shock or ramp loading. The response of the sample was investigated through the surface velocity history, and in some cases with in-situ x-ray diffraction. The velocity histories exhibited clear elastic waves, from which the flow stress was deduced and compared with the elastic strain as determined by diffraction. We compare the deduced flow stress with models calibrated to samples millimeters thick, and to theoretical studies. C1 [Swift, Damian C.; Hawreliak, James; El-Dasher, Bassem; McNaney, James; Milathianaki, Despina; Lorenzana, Hector; Kumar, Mukul] Lawrence Livermore Natl Lab, PLS, CMMD, 700 East Ave, Livermore, CA 94551 USA. [Remington, Bruce] Lawrence Livermore Natl Lab, NIF, PS, Livermore, CA 94551 USA. [Tierney, Thomas E.] Los Alamos Natl Lab, MS E526, P 24, Los Alamos, NM 87545 USA. RP Swift, DC (reprint author), Lawrence Livermore Natl Lab, PLS, CMMD, 700 East Ave, Livermore, CA 94551 USA. RI McNaney, James/F-5258-2013 FU U.S. Department of Energy [W-7405-ENG-36, DE-AC52-06NA25396, DE-AC52-07NA27344] FX This work was performed under the auspices of the U.S. Department of Energy under contracts # W-7405-ENG-36, DE-AC52-06NA25396, and DE-AC52-07NA27344. NR 11 TC 1 Z9 1 U1 0 U2 3 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1057 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100251 ER PT S AU Ruggiero, A Bonora, N Esposito, L Gray, GT AF Ruggiero, A. Bonora, N. Esposito, L. Gray, G. T., III BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI DUCTILE DAMAGE EVOLUTION ASSESSMENT IN HIGH PURITY COPPER AND STAINLESS STEEL SUBJECTED TO DIFFERENT SHOCK-LOADING PROFILES USING COHESIVE MODELING SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Spall fracture; Cohesive element; 99.99% Cu; 316 L Stainless Steel AB The calculated energy dissipation associated with the pull-back signal amplitude in plate impact experiment is usually larger than that obtained by accounting the contributions of the estimated plastic work at continuum scale and that due to ductile damage. As a possible explanation, it is proposed that the drop in the stress triaxiality, due to the formation of free surfaces as a result of the first appearance of the damage in form of voids, allows the matrix material to exhibit much larger plastic deformation. In order to verify this proposition, a numerical investigation based on the use of cohesive finite elements has been performed. The proposed numerical model has been used to predict the damage development and the rear pressure profile in a flyer plate impact test on 99.99% Cu and 316 L SS under flat top and triangular pressure wave profile. C1 [Ruggiero, A.; Bonora, N.; Esposito, L.] Univ Cassino, DiMSAT, Via G Di Biasio 43, I-03043 Cassino, Italy. [Gray, G. T., III] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Ruggiero, A (reprint author), Univ Cassino, DiMSAT, Via G Di Biasio 43, I-03043 Cassino, Italy. RI Esposito, Luca/A-1802-2013; Ruggiero, Andrew/G-6852-2012; Esposito, Luca/A-4967-2017; OI Ruggiero, Andrew/0000-0003-4593-6331; Bonora, Nicola/0000-0003-3473-630X; Esposito, Luca/0000-0002-8482-356X NR 3 TC 0 Z9 0 U1 0 U2 3 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1073 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100255 ER PT S AU Tonks, DL Bingert, J Livescu, V Peralta, P AF Tonks, D. L. Bingert, J. Livescu, V. Peralta, P. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI GEOMETRY OF DAMAGE IN SHOCK LOADED COPPER AND TANTALUM SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE ductile damage; roughness; spallation; tantalum; copper AB Cavities of coalesced voids have been found in recovered samples of Tantalum in high-explosive-driven experiments. The boundaries of these cavities are imprinted with details of the coalescence and void growth processes. One way of quantifying these details is to measure the roughness of the surfaces. In this work, we calculate the roughness of 2D cross sections of such cavity surfaces from micrographs by analyzing the images with the box counting technique. Spall plane damage driven by flyer plates in Copper samples is also analyzed. The different length scale regimes found will be discussed. C1 [Tonks, D. L.; Bingert, J.; Livescu, V.; Peralta, P.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Tonks, DL (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 4 TC 2 Z9 2 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1081 EP 1084 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100257 ER PT S AU Igonin, VV Ignatova, ON Lebedev, AI Lebedeva, MO Nadezhin, SS Podurets, AM Raevsky, VA Solovyev, VP Zocher, MA Preston, DL AF Igonin, V. V. Ignatova, O. N. Lebedev, A. I. Lebedeva, M. O. Nadezhin, S. S. Podurets, A. M. Raevsky, V. A. Solovyev, V. P. Zocher, M. A. Preston, D. L. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI INFLUENCE OF DYNAMIC PROPERTIES ON PERTURBATION GROWTH IN TANTALUM SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE shock wave; shockless loading; perturbation method; Rayleigh-Taylor instability; twinning AB The perturbation method is employed in an experimental-numerical study of the behavior of Ta subjected to both shock and shockless (approximately quasi-isentropic) loading. The loading produces large deformation plastic flow, pressures on the order of 10-80 GPa, and strain rates on the order of 10(5)-10(9) s(-1). Metallographic analysis is used to assess microstructural changes. Perturbation growth is reasonably well predicted with the use of a finite element continuum code and the Steinberg-Glushak model. Perturbation growth in Ta is compared to that of Al and Cu. Observations are made concerning fundamental differences in the behavior of fcc versus bcc materials subjected to the studied load environment. Ramifications of these differences on model development is discussed. C1 [Igonin, V. V.; Ignatova, O. N.; Lebedev, A. I.; Lebedeva, M. O.; Nadezhin, S. S.; Podurets, A. M.; Raevsky, V. A.; Solovyev, V. P.] All Russia Res Inst Expt Phys, Russian Fed Nucl Ctr, Sarov 607190, Nizhny Novgorod, Russia. [Zocher, M. A.; Preston, D. L.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Igonin, VV (reprint author), All Russia Res Inst Expt Phys, Russian Fed Nucl Ctr, Sarov 607190, Nizhny Novgorod, Russia. NR 12 TC 1 Z9 1 U1 1 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1085 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100258 ER PT S AU Furnish, MD Gray, GT Bingert, JF AF Furnish, M. D. Gray, G. T., III Bingert, J. F. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI COMPARISON OF LINE-IMAGING VISAR INFERENCES OF SPALLED SAMPLE DISTENSION WITH METALLOGRAPHIC ANALYSIS OF RECOVERED SAMPLES SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Tantalum; VISAR:line; line-imaging VISAR; spall; variability; Hugoniot elastic limit ID TANTALUM; DAMAGE AB Using a line-imaging VISAR to infer the position (x) and time (t) dependent distension of a spiting sample requires two assumptions: (1) a calculated velocity surface v[no spall] (x,t) for the no-spall case to compare with the observed v [observed](x,t) surface, and (2) a lack of significant wave processing by the near-surface microstructure. We have designed and are conducting a matrix of experiments to evaluate these assumptions. In each experiment, we use a line-imaging VISAR to measure the velocity history of carefully characterized tantalum and copper samples taken to an incipient spall condition. The pre-shot characterization included spatially resolved mapping of grain locations and orientations by electron backscatter diffraction (EBSD). These samples are then soft-recovered and sectioned along the same line as monitored by the line-imaging VISAR. An initial pair of experiments provided 1 mm of span separation; we are preparing further experiments with incipient spall conditions. C1 [Furnish, M. D.] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. [Gray, G. T., III; Bingert, J. F.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Furnish, MD (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. FU Sandia [DE-AC04- 94AL85000]; Los Alamos National Laboratories FX Assistance from the DICE crew. Matt Gurule and Tom Ao is gratefully acknowledged. This work was supported by Sandia and Los Alamos National Laboratories. Sandia is a multi-program laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy under Contract DE-AC04- 94AL85000. NR 9 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1089 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100259 ER PT S AU Gray, GT Hull, LM Faulkner, JR Briggs, ME Cerreta, EK Addessio, FL Bourne, NK AF Gray, G. T., III Hull, L. M. Faulkner, J. R. Briggs, M. E. Cerreta, E. K. Addessio, F. L. Bourne, N. K. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI THE EFFECTS OF SHOCKWAVE PROFILE SHAPE AND SHOCK OBLIQUITY ON SPALLATION: KINETIC AND STRESS-STATE EFFECTS ON DAMAGE EVOLUTION SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE plastic strain; damage; Taylor wave; HE; spall AB Shock-loading of a material in contact with a high explosive (HE) experiences a "Taylor wave" (triangular wave) loading profile in contrast to the square-wave loading profile imparted via the impact of a flyer plate. Detailed metallographic and microtextural analysis of the damage evolution in spalled Cu samples as a function of square / triangle and sweeping detonation-wave loading is presented. C1 [Gray, G. T., III; Hull, L. M.; Faulkner, J. R.; Briggs, M. E.; Cerreta, E. K.; Addessio, F. L.] Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. [Bourne, N. K.] AWE, Reading RG7 4PR, Berks, England. RP Gray, GT (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. FU Joint DoD/DOE Munitions Technology Development Program FX The authors acknowledge the assistance of Rudy Archuleta, Mike Archuleta, Pam Scott, Joe Lynch, Steve Hare, and M.F. Lopez with this study. Los Alamos National Laboratory is operated by Los Alamos National Security, LLC, for the National Nuclear Security Administration of the U.S. Department of Energy under contract DE-AC52-06NA25396. This work was partially sponsored by the Joint DoD/DOE Munitions Technology Development Program. NR 10 TC 3 Z9 3 U1 1 U2 6 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1097 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100261 ER PT S AU Chu, MQ Jones, IP Millett, JCF Bourne, NK Gray, GT AF Chu, M. Q. Jones, I. P. Millett, J. C. F. Bourne, N. K. Gray, G. T., III BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI THE ROLE OF TRANSMISSION ELECTRON MICROSCOPY IN ASSESSING SHOCK PLASTICITY SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Plate impact; Ti64; TEM ID STRAIN-RATE AB A TEM investigation of the effect of shock pulse shape on post-shock dislocation debris in Ti-6Al-4V is described. Shock experiments can provide valuable insights which would inform our general understanding of plasticity of Ti-6A1-4V. The current limitations of TEM are reviewed and strategies described which might circumvent these limitations. C1 [Chu, M. Q.; Jones, I. P.] Univ Birmingham, Dept Met & Mat, Birmingham B15 2TT, W Midlands, England. [Millett, J. C. F.; Bourne, N. K.] AWE, Reading RG7 4PR, Berks, England. [Gray, G. T., III] Los Alamos Natl Lab, MST 8, Los Alamos, NM 87545 USA. RP Chu, MQ (reprint author), Univ Birmingham, Dept Met & Mat, Birmingham B15 2TT, W Midlands, England. OI Jones, Ian/0000-0002-3948-8109 NR 10 TC 0 Z9 0 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1113 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100264 ER PT S AU Rae, PJ Trujillo, CP Lovato, ML AF Rae, Philip J. Trujillo, Carl P. Lovato, Manuel L. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI THE YOUNG'S MODULUS OF 1018 STEEL AND 6061-T6 ALUMINIUM MEASURED FROM QUASI-STATIC TO ELASTIC PRECURSOR STRAIN-RATES SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE modulus; metal; strain-rate ID TEMPERATURE AB The assumption that Young's modulus is strain-rate invariant is tested for 6061-T6 aluminium alloy and 1018 steel over 10 decades of strain-rate. For the same billets of material, 3 quasi-static strain-rates are investigated with foil strain gauges at room temperature. The ultrasonic sound speeds are measured and used to calculate the moduli at approximately 10(4) s(-1). Finally, ID plate impact is used to generate an elastic pre-cursor in the alloys at a strain-rate of approximately 10(6) s(-1) from which the longitudinal sound speed may be obtained. It is found that indeed the Young's modulus is strain-rate independent within the experimental accuracy. C1 [Rae, Philip J.; Trujillo, Carl P.; Lovato, Manuel L.] LANL, Los Alamos, NM 87545 USA. RP Rae, PJ (reprint author), LANL, MS G755,POB 1663, Los Alamos, NM 87545 USA. NR 12 TC 2 Z9 2 U1 3 U2 5 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1119 EP 1122 DI 10.1063/1.3294997 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100265 ER PT S AU McNaney, JM Hsuing, LM Barton, NR Kumar, M AF McNaney, J. M. Hsuing, L. M. Barton, N. R. Kumar, M. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI SHOCK DRIVEN TWINNING IN TANTALUM SINGLE CRYSTALS SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Shock; twinning; tantalum; EBSD ID HIGH-PURITY TANTALUM; LOW-TEMPERATURE DEFORMATION; CENTRED CUBIC METALS; ORIENTATION DEPENDENCE; PLASTIC DEFORMATION; TUNGSTEN ALLOYS; FLOW-STRESS; YIELD; ASYMMETRY; MECHANISM AB Recovery based observations of behavior in Ta generated under high pressure loading conditions are reported. Two shock pressures, 25, and 55 GPa and four orientations {(100), (110), (111), (123)} were considered. Recovered samples were characterized using electron backscatter diffraction along with a limited amount of transmission electron microscopy to assess the occurrence of twinning under each test condition. Material recovered from 25 GPa had a very small fraction of twinning for the (100), (110), and (111) oriented crystals while a more noticeable fraction of the (123) oriented crystal was twinned. Material recovered from 55 GPa showed little twinning for (100) orientation, slightly more for the (111) orientation, and a large area fraction for the (123) orientation. C1 [McNaney, J. M.; Hsuing, L. M.; Barton, N. R.; Kumar, M.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP McNaney, JM (reprint author), Lawrence Livermore Natl Lab, L-356, Livermore, CA 94550 USA. RI McNaney, James/F-5258-2013 NR 33 TC 5 Z9 5 U1 0 U2 14 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1127 EP 1130 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100267 ER PT S AU Lane, JMD Thompson, AP AF Lane, J. Matthew D. Thompson, Aidan P. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI MOLECULAR DYNAMICS SIMULATION OF SHOCK-INDUCED PHASE TRANSITION IN GERMANIUM SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Phase transition; Germanium; Molecular dynamics; Pressure-induced; Shock ID SILICON AB Results from shock-wave loading of germanium are presented. Germanium is known to transition from ambient cubic diamond (cd) phase to the high-pressure body-centered tetragonal (bet) or beta-tin phase at pressures between 10 and 12 GPa. Large-scale molecular dynamics (MD) simulations were used to study the phase transition in single-crystal germanium under uniaxial compression along the < 001 > and < 111 > orientations. We observed that the transition from the cd phase to the bet phase nucleates through shear banding and advances to relieve uniaxial strain. The macroscopic properties are compared with experimental results for the Modified Embedded Atom Method (MEAM) and Tersoff potentials. C1 [Lane, J. Matthew D.; Thompson, Aidan P.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Lane, JMD (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 7 TC 7 Z9 7 U1 0 U2 7 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1157 EP 1160 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100274 ER PT S AU Cherne, FJ Jensen, BJ Elkin, VM AF Cherne, F. J. Jensen, B. J. Elkin, V. M. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI IMPLEMENTATION OF A COMPLEX MULTI-PHASE EQUATION OF STATE FOR CERIUM AND ITS CORRELATION WITH EXPERIMENT SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Cerium; equation of state; thermodynamics; phase transitions ID ALPHA-PHASE-TRANSITION; UNIVERSAL FEATURES; GAMMA; TEMPERATURE; COMPRESSION; PRESSURE AB The complexity of cerium combined with its interesting material properties makes it a desirable material to examine dynamically. Characteristics such as the softening of the material before the phase change, low pressure solid-solid phase change, predicted low pressure melt boundary, and the solid-solid critical point add complexity to the construction of its equation of state. Currently, we are incorporating a feedback loop between a theoretical understanding of the material and an experimental understanding. Using a model equation of state for cerium we compare calculated wave profiles with experimental wave profiles for a number of front surface impact (cerium impacting a plated window) experiments. Using the calculated release isentrope we predict the temperature of the observed rarefaction shock. These experiments showed that the release state occurs at different magnitudes, thus allowing us to infer where dynamic gamma - alpha phase boundary is. C1 [Cherne, F. J.; Jensen, B. J.] Los Alamos Natl Lab, DE 9,MS P952, Los Alamos, NM 87545 USA. [Elkin, V. M.] Russian Federal Nuclear Ctr, Zababakhin Russia Sci Res Inst Tech Phys, Snezhinsk, Russia. RP Cherne, FJ (reprint author), Los Alamos Natl Lab, DE 9,MS P952, Los Alamos, NM 87545 USA. OI Cherne, Frank/0000-0002-8589-6058 NR 13 TC 4 Z9 6 U1 0 U2 6 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1161 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100275 ER PT S AU Jensen, BJ AF Jensen, B. J. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI SHOCK WAVE EXPERIMENTS TO EXAMINE THE MULTIPHASE PROPERTIES OF CERIUM SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE multiphase; equation of state; preheat ID ALPHA PHASE-TRANSITION; EQUATION; STATE; KBAR AB There is a scientific need to obtain new data to constrain and refine next generation multi-phase equation-of-state (EOS) for metals. Experiments are needed to locate phase boundaries, determine transition kinetic times, and to obtain EOS and Hugoniot data for relevant phases. The objectives of the current work was to examine the multiphase properties for cerium including the dynamic melt boundary and the low-pressure solid-solid phase transition through the critical point. These objectives were addressed by performing plate impact experiments that used multiple experimental configurations including front-surface impact experiments to directly measure transition kinetics, multislug experiments that used the overtake method to measure sound speeds at pressure, and preheat experiments to map out phase boundaries. Preliminary data and analysis obtained for cerium will be presented. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Jensen, BJ (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 18 TC 4 Z9 4 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1165 EP 1170 PG 6 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100276 ER PT S AU Rigg, PA Greeff, CW Knudson, MD Gray, GT AF Rigg, P. A. Greeff, C. W. Knudson, M. D. Gray, G. T., III BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI INFLUENCE OF IMPURITIES ON THE SOLID-SOLID PHASE TRANSITIONS IN ZIRCONIUM SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE zirconium; phase transitions; plate impact; isentropic compression ID ISENTROPIC COMPRESSION; STATE AB In an effort to better understand the influence of impurities on the solid-solid phase transitions in Group IVb metals, experiments have been carried out on polycrystalline zirconium samples using plate impact and isentropic loading techniques. Samples with three levels of impurities were shock-loaded using both gas and powder-driven guns and isentropically loaded using magnetic drive (Sandia's Z-Machine) to determine the properties and characteristics of both the alpha -> omega to and omega -> beta transitions. C1 [Rigg, P. A.; Greeff, C. W.; Gray, G. T., III] Los Alamos Natl Lab, POB 1663 MS P952, Los Alamos, NM 87545 USA. [Knudson, M. D.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Rigg, PA (reprint author), Los Alamos Natl Lab, POB 1663 MS P952, Los Alamos, NM 87545 USA. RI Greeff, Carl/N-3267-2013 FU U.S. Department of Energy FX We would like to thank Mark Byers, Frank Abeyta, Tim Pierce, and James Esparza for building and assisting with the execution of the plate impact experiments described in this manuscript. The many folks at Sandia National Laboratory responsible for reliable operation of the Z-Machine are also thanked for assisting with the isentropic compression experiments. This work was performed under the auspices of the U.S. Department of Energy. NR 9 TC 1 Z9 1 U1 1 U2 4 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1171 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100277 ER PT S AU Resnyansky, AD Bourne, NK Millett, JCF Brown, EN AF Resnyansky, A. D. Bourne, N. K. Millett, J. C. F. Brown, E. N. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI CONSTITUTIVE MODELING OF SHOCK RESPONSE OF PTFE SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Constitutive modeling; phase transition; shock wave; multi-phase material ID POLYTETRAFLUOROETHYLENE; COMPRESSION AB Polytetrafluoroethylene (PTFE) is a complex semicrystalline polymer with four pressure and temperature dependent crystalline phases. As has been recently studied, the crystalline region grows with load. Shock-wave profiles reported from embedded gauges demonstrate features that may be related to impedance mismatches between the regions subjected to some transitions resulting in density and modulus variations. We consider the amorphous-to-crystalline and the high-pressure Phase II-III transitions in the current simulation analysis. The present work utilizes a multi-phase rate sensitive model to describe shock response of the PTFE material. One-dimensional experimental shock wave histories are compared with calculated profiles using kinetics describing the transitions. The objective of this study is to understand the role of the various transitions in the shock response of PTFE. C1 [Resnyansky, A. D.] DSTO, Weap Syst Div, Edinburgh Sa 5111, Australia. [Bourne, N. K.; Millett, J. C. F.] AWE, Berkshire RG7 4PR, England. [Brown, E. N.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Resnyansky, AD (reprint author), DSTO, Weap Syst Div, Edinburgh Sa 5111, Australia. RI Resnyansky, Anatoly/H-6399-2013 OI Resnyansky, Anatoly/0000-0003-2573-1005 NR 16 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1183 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100280 ER PT S AU Crockett, SD Greeff, CW AF Crockett, Scott D. Greeff, Carl W. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI A GALLIUM MULTIPHASE EQUATION OF STATE SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Gallium; Multi-Phase; Equation of State ID HIGH-PRESSURES; GA AB A new SESAME multiphase Gallium equation of state (EOS) has been developed. It includes three of the solid phases (Ga I, Ga H, Ga III) and a fluid phase (liquid/gas). The EOS includes consistent latent heat between the phases. We compare the results to the liquid Hugoniot data. We also explore the possibility of re-freezing via dynamic means such as isentropic and shock compression. We predict an unusual spontaneous spreading of low pressure shocks from STP. C1 [Crockett, Scott D.; Greeff, Carl W.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Crockett, SD (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RI Greeff, Carl/N-3267-2013; OI Greeff, Carl/0000-0003-0529-0441 NR 16 TC 2 Z9 2 U1 0 U2 5 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1191 EP 1194 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100282 ER PT S AU Germann, TC Kadau, K AF Germann, Timothy C. Kadau, Kai BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI LARGE-SCALE MOLECULAR DYNAMICS SIMULATIONS OF THE FCC-FCC VOLUME COLLAPSE TRANSITION IN SHOCKED CESIUM SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Molecular dynamics; cesium; solid-solid phase transitions ID CRYSTALS; WAVES AB We have utilized large-scale classical molecular dynamics simulations to study the isomorphic fcc-fcc transformation in shocked cesium perfect crystals. An interatomic potential developed by Ackland and Reed describes the similar volume collapse transition in Cs, by adding an internal variable for the relative occupation of two (s and d) electronic bands on each atom to an embedded atom method (EAM)-like model. Using an orientation imaging map algorithm, we find a significant dependence upon initial crystallographic orientation: shock compression in the [001] direction leads to a product with a predominantly [011]-like texture, while [111] loading accomplishes the volume collapse transition without any crystallographic rotation. A three-wave (elastic-plastic-product phase) structure is also observed for shock pressures around 5 GPa in the [111] case, while the [001] plastic wave is overdriven prior to the onset of transformation. C1 [Germann, Timothy C.; Kadau, Kai] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Germann, TC (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. NR 10 TC 1 Z9 1 U1 1 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1209 EP 1212 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100286 ER PT S AU Velisavljevic, N Chesnut, GN Dattelbaum, DM Vohra, YK Stemshorn, A AF Velisavljevic, N. Chesnut, G. N. Dattelbaum, D. M. Vohra, Y. K. Stemshorn, A. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI STRUCTURAL PHASE STABILITY IN GROUP IV METALS UNDER STATIC HIGH PRESSURE SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Group IV metals; high pressure; diamond anvil cell ID OMEGA-PHASE; TRANSITION; TITANIUM AB In group IV metals (Ti, Zr, and Hf) room temperature compression leads to a martensitic transformation from a ductile a to alpha brittle omega phase. The alpha -> omega phase boundary decreases to lower pressure at high temperature and can limit the use of group IV metals in industrial applications. There is a large discrepancy in the transition pressure reported in literature, with some of the variation attributed to experimental conditions (i.e. hydrostatic vs. non-hydrostatic). Shear deformation in non-hydrostatic experiments drives alpha -> omega transition and decreases transition pressure. Impurities can also aid or suppress alpha -> omega transition. By performing x-ray diffraction experiments on samples in a diamond anvil cell we show that interstitial impurities, such as C, N, and O can obstruct alpha -> omega transition and stabilize a phase to higher pressure. We also show that reduction in grain size can also influence alpha -> omega phase boundary and help stabilize a phase to higher pressure under non-hydrostatic conditions. C1 [Velisavljevic, N.; Chesnut, G. N.; Dattelbaum, D. M.] Los Alamos Natl Lab, Shock & Detomat Phys, MS P952, Los Alamos, NM 87544 USA. [Vohra, Y. K.; Stemshorn, A.] Univ Alabama Birmingham, Dept Phys, Birmingham, AL 35294 USA. RP Velisavljevic, N (reprint author), Los Alamos Natl Lab, Shock & Detomat Phys, MS P952, Los Alamos, NM 87544 USA. FU DOE/NNSA; National Science Foundation (NSF) [DMR-0703891]; DOE-BES [DE-AC02-06CH11357]; DOE-NNSA; NSF; W.M. Keck Foundation FX LANL is operated by LANS LLC for the DOE and NNSA. The authors acknowledge funding from DOE/NNSA Campaign 1 and 2. Y. K. V. would like to acknowledge support from the National Science Foundation (NSF) under grant No. DMR-0703891. We thank Camegie-DOE Alliance Center for beamtime and sector 16 scientist for their help with experimental setup. This work was performed at HPCAT (Sector 16), Advanced Photon Source (APS), Argonne National Laboratory. HPCAT is supported by DOE-BES, DOE-NNSA, NSF, and the W.M. Keck Foundation. APS is supported by DOE-BES, under Contract No. DE-AC02-06CH11357. Authors would also like to thank Dr. S. T. Weir (LLNL) for his work on the designer diamond anvil project and Dr. L. Stevens for help with data collection. NR 8 TC 1 Z9 1 U1 0 U2 6 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1213 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100287 ER PT S AU Zhernokletov, MV Kovalev, AE Komissarov, VV Zocher, MA Cherne, FJ AF Zhernokletov, M. V. Kovalev, A. E. Komissarov, V. V. Zocher, M. A. Cherne, F. J. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI MEASUREMENT OF SOUND VELOCITIES IN SHOCK-COMPRESSED TIN UNDER PRESSURES UP TO 150 GPa SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE sound velocity; tin; indicator liquids; optical gauge; manganin gauges; phase transition; melting; shock adiabat ID RAREFACTION WAVE AB Sound velocity in shock-compressed tin was measured over the pressure range of 31138 GPa by the overtake method with using indicator liquids. Photodiode-based optical gauges were used to record luminescence of the liquid indicators. For shock compressions of 5-18 GPa, the sound velocity in tin was measured with manganin gauges by determining the oncoming release wave in the tin. The experimental data were compared to calculated results and data obtained by other authors. According to data obtained in this work, tin melts on the hugoniot between similar to 63-90 GPa. C1 [Zhernokletov, M. V.; Kovalev, A. E.; Komissarov, V. V.] All Russia Res Inst Expt Phys, Russian Fed Nucl Ctr, Sarov 607190, Nizhni Novgorod, Russia. [Zocher, M. A.; Cherne, F. J.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Zhernokletov, MV (reprint author), All Russia Res Inst Expt Phys, Russian Fed Nucl Ctr, Sarov 607190, Nizhni Novgorod, Russia. OI Cherne, Frank/0000-0002-8589-6058 FU U.S. Department of Energy [37713-000-02-35 (035)] FX This work was performed under the auspices of the U.S. Department of Energy by the University of California Los Alamos National Laboratory under contract #37713-000-02-35 (#035). NR 9 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1217 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100288 ER PT S AU Clements, BE AF Clements, B. E. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI NONEQUILIBRIUM VOLUMETRIC RESPONSE OF SHOCKED POLYMERS SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Polymers; PMMA; equation of state; nonequilibrium; shock ID METHACRYLATE; PRESSURE AB Polymers are well known for their non-equilibrium deviatoric behavior. However, investigations involving both high rate shock experiments and equilibrium measured thermodynamic quantities remind us that the volumetric behavior also exhibits a non-equilibrium response. Experimental evidence supporting the notion of non-equilibrium volumetric behavior is summarized. Following that discussion, a continuum-level theory is proposed that accounts for both the equilibrium and non-equilibrium response. Upon finding agreement with experiment, the theory is used to study the relaxation of a shocked polymer back towards a shocked equilibrium state. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Clements, BE (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 11 TC 1 Z9 1 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1223 EP 1228 PG 6 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100289 ER PT S AU Brown, EN Trujillo, CP Gray, GT AF Brown, E. N. Trujillo, C. P. Gray, G. T., III BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI DYNAMIC-TENSILE-EXTRUSION RESPONSE OF FLUOROPOLYMERS SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Dynamic-Tensile-Extrusion (Dyn-Ten-Ext); PTFE; PCTFE ID POLYTETRAFLUOROETHYLENE PTFE; STRAIN-RATE; FRACTURE; TEMPERATURE; POLYMERS; PHASE AB The current work applies the recently developed Dynamic-Tensile-Extrusion (Dyn-Ten-Ext) technique to polytetrafluoroethylene (PTFE) and polychlorotrifluoroethylene (PCTFE). Similar to the Taylor Impact Rod, Dynamic-Tensile-Extrusion is a strongly integrated test, probing a wide range of strain rates and stress states. However, the stress state is primarily tensile enabling investigation of dynamic tensile failure modes. Here we investigate the influence of this propensity to neck or not between PCTFE and PTFE on their response under dynamic tensile extrusion loading. The results of the Dyn-Ten-Ext technique are compared with two classic techniques. Both polymers have been investigated using Tensile Split Hopkinson Pressure Bar. The quasistatic and dynamic responses of both fluoropolymers have been extensively characterized. The two polymers exhibit significantly different failure behavior under tensile loading at moderate strain rates. Polytetrafluoroethylene resists formation of a neck and exhibits significant strain hardening. Independent of temperature or strain rate, PTFE sustains true strains to failure of approximately 1.5. Polychlorotrifluoroethylene, on the other hand, consistently necks at true strains of approximately 0.05. C1 [Brown, E. N.] Los Alamos Natl Lab, ADWP, POB 1663, Los Alamos, NM 87545 USA. [Trujillo, C. P.; Gray, G. T., III] Los Alamos Natl Lab, MST 8, Los Alamos, NM 87545 USA. RP Brown, EN (reprint author), Los Alamos Natl Lab, ADWP, POB 1663, Los Alamos, NM 87545 USA. EM en_brown@lanl.gov FU NNSA of the US Department of Energy [DE-AC52-06NA25396]; US Department of Energy; DoD/DOE Munitions Program FX Los Alamos National Laboratory is operated by LANS, LLC, for the NNSA of the US Department of Energy under confract DE-AC52-06NA25396. This research was supported under the auspices of the US Department of Energy and the Joint DoD/DOE Munitions Program. NR 24 TC 3 Z9 3 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1233 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100291 ER PT S AU Jordan, JL Dattelbaum, D Ferranti, L Sutherland, G Baer, M Richards, W Sheffield, S Dick, RD Thadhani, NN AF Jordan, Jennifer L. Dattelbaum, Dana Ferranti, Louis Sutherland, Gerrit Baer, Mel Richards, Wayne Sheffield, Stephen Dick, Richard D. Thadhani, Naresh N. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI SHOCK EQUATION OF STATE OF SINGLE CONSTITUENT AND MULTI-CONSTITUENT EPOXY-BASED PARTICULATE COMPOSITES SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE epoxy particulate composites; Hugoniot; mixture model ID MIXTURE THEORY; HIGH-PRESSURE; TRANSITION; RESIN AB There are several studies in the literature regarding the equation of state of alumina-epoxy composites. Although this single component system interacts in a complex manner with shock waves, the addition of a second metal or ceramic particulate can result in even more complex interactions. This paper presents a review of shock loading studies on epoxy-based particulate composites. The relationship between equation of state parameters and particulate concentration is investigated. The measured shock properties are compared with a mixture model for two and three phases. C1 [Jordan, Jennifer L.; Richards, Wayne] USAF, Res Lab, Munit Directorate, Eglin AFB, FL 32542 USA. [Dattelbaum, Dana; Sheffield, Stephen] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Ferranti, Louis] Lawrence Livermore Natl Lab, Livermore, CA USA. [Sutherland, Gerrit] USN, Surface Warfare Ctr, Potomac, MA USA. [Baer, Mel] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Dick, Richard D.] Shocks Unlimited, Albuquerque, NM USA. [Thadhani, Naresh N.] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA. RP Jordan, JL (reprint author), USAF, Res Lab, Munit Directorate, Eglin AFB, FL 32542 USA. OI Jordan, Jennifer/0000-0002-4596-5872 NR 17 TC 1 Z9 2 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1253 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100296 ER PT S AU Mulford, RN Swift, DC AF Mulford, R. N. Swift, D. C. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI POLYSTYRENE FOAM PRODUCTS EQUATION OF STATE AS A FUNCTION OF POROSITY AND FILL GAS SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Polystyrene; Equation of State; Foam composition AB An accurate EOS for polystyrene foam is necessary for analysis of numerous experiments in shock compression, inertial confinement fusion, and astrophysics. Plastic to gas ratios vary between various samples of foam, according to the density and cell-size of the foam. A matrix of compositions has been investigated, allowing prediction of foam response as a function of the plastic-to-air ratio. The EOS code CHEETAH allows participation of the air in the decomposition reaction of the foam. Differences between air-filled, Ar-blown, and CO2-blown foams are investigated, to estimate the importance of allowing air to react with products of polystyrene decomposition. O-2-blown foams are included in some comparisons, to amplify any consequences of reaction with oxygen in air. He-blown foams are included in some comparisons, to provide an extremum of density. Product pressures are slightly higher for oxygen-containing fill gases than for non-oxygen-containing fill gases. Examination of product species indicates that CO2 decomposes at high temperatures. C1 [Mulford, R. N.] Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. [Swift, D. C.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Mulford, RN (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1261 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100298 ER PT S AU McGrane, SD Moore, DS Whitley, VH Bolme, CA Eakins, DE AF McGrane, S. D. Moore, D. S. Whitley, V. H. Bolme, C. A. Eakins, D. E. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI MOLECULAR SHOCK RESPONSE OF EXPLOSIVES: ELECTRONIC ABSORPTION SPECTROSCOPY SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Electronic absorption; ultrafast; shock; PETN ID TETRANITRATE SINGLE-CRYSTALS; CHEMICAL-REACTIONS; DETONATION; INITIATION; CHEMISTRY; SOLIDS; FILMS AB Electronic absorption spectroscopy in the range 400-800 nm was coupled to ultrafast laser generated shocks to begin addressing the extent to which electronic excitations are involved in shock induced reactions. Data are presented on shocked polymethylmethacrylate (PMMA) thin films and single crystal pentaerythritol tetranitrate (PETN). Shocked PMMA exhibited thin film interference effects from the shock front. Shocked PETN exhibited interference as well as broadband increased absorption. Relation to shock initiation and the need for time dependent absorption (future experiments) is briefly discussed. C1 [McGrane, S. D.; Moore, D. S.; Whitley, V. H.; Bolme, C. A.; Eakins, D. E.] Los Alamos Natl Lab, Shock & Detonat Phys Grp, Los Alamos, NM 87545 USA. RP McGrane, SD (reprint author), Los Alamos Natl Lab, Shock & Detonat Phys Grp, POB 1663, Los Alamos, NM 87545 USA. NR 15 TC 3 Z9 3 U1 0 U2 8 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1301 EP 1304 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100307 ER PT S AU Quenneville, J Moore, DS AF Quenneville, J. Moore, D. S. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI THEORETICAL STUDIES ON THE REACTION PATHWAYS OF ELECTRONICALLY EXCITED DAAF SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE DAAF; excited state; absorption spectrum; conical intersection; dehydration ID PHOTOISOMERIZATION; STILBENE AB The use of temporally and spectrally shaped ultrafast laser pulses to initiate, as well as detect, high explosives is being explored at Los Alamos. High level ab initio calculations, presented here, are employed to help guide and interpret the experiments. The ground and first excited electronic states of 3,3'-diamino-4,4'-azoxyfurazan (DAAF) are investigated using complete active space self-consistent field (CASSCF) and time-dependent density functional theory (TD-DFT). The geometrical and energetic character of the excited state minima, conical intersections and reaction pathways of DAAF are described. Two radiative and two non-radiative excited state population quenching mechanisms are outlined, and possible pathways for photochemical and spectroscopic control are discussed. C1 [Quenneville, J.] Special Sci Inc, 4 4th Ave, Burlington, MA 01803 USA. [Moore, D. S.] Los Alamos Natl Lab, Dynam Experimentat Div, Los Alamos, NM 87545 USA. RP Quenneville, J (reprint author), Special Sci Inc, 4 4th Ave, Burlington, MA 01803 USA. FU U.S. Department of Energy [DE-AC52-06NA25396] FX This work was supported by the U.S. Department of Energy under contract DE-AC52-06NA25396. NR 8 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1305 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100308 ER PT S AU Lomov, I Fujino, D Antoun, T Liu, B AF Lomov, Ilya. Fujino, Don Antoun, Tarabay Liu, Benjamin BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI MESOSCALE SIMULATIONS OF POWDER COMPACTION SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Powder compaction; granular flow; mesoscale simulations AB Mesoscale 3D simulations of shock compaction of metal and ceramic powders have been performed with an Eulerian hydrocode GEODYN. The approach was validated by simulating a well-characterized shock compaction experiment of a porous ductile metal. Simulation results using the Steinberg material model and handbook values for solid 2024 aluminum showed good agreement with experimental compaction curves and wave profiles. Brittle ceramic materials are not as well studied as metals, so a simple material model for solid ceramic (tungsten carbide) has been calibrated to match experimental compaction curves. Direct simulations of gas gun experiments with ceramic powders have been performed and showed good agreement with experimental data. The numerical shock wave profile has same character and thickness as that measured experimentally using VISAR. The numerical results show reshock states above the single-shock Hugoniot line as observed in experiments. We found that for good quantitative agreement with experiments 3D simulations are essential. C1 [Lomov, Ilya.; Fujino, Don; Antoun, Tarabay; Liu, Benjamin] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Lomov, I (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA. NR 4 TC 0 Z9 0 U1 2 U2 5 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1327 EP 1330 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100313 ER PT S AU Borg, JP Vogler, TJ Fraser, A AF Borg, J. P. Vogler, T. J. Fraser, A. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI A REVIEW OF MESOSCALE SIMULATIONS OF GRANULAR MATERIALS SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Mesoscale simulations; granular material; heterogeneous material; CTH AB With the advent of increased computing power, mesoscale simulations have been used to explore grain level phenomenology of dynamic compaction events of various heterogenous systems including foams, reactive materials and porous granular materials. This paper presents an overview of several mesoscale studies on a variety of materials including tungsten carbide, wet and dry sand, and an inert mixture of Al-MnO2-Epoxy. This paper focuses on relating bulk and compaction wave phenomenology from the mesoscale modeling to experimental results and exploring the nature of the compaction wave. In addition, lessons learned during these explorations, modeling techniques, strengths and weaknesses of hydrodynamic mesoscale simulations are also discussed. C1 [Borg, J. P.; Fraser, A.] Marquette Univ, Dept Mech Engn, 1515 W Wisconsin Ave, Milwaukee, WI 53233 USA. [Vogler, T. J.] Sandia Natl Labs, Livermore, CA 94550 USA. RP Borg, JP (reprint author), Marquette Univ, Dept Mech Engn, 1515 W Wisconsin Ave, Milwaukee, WI 53233 USA. NR 13 TC 1 Z9 1 U1 4 U2 9 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1331 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100314 ER PT S AU Fenton, G Caipen, T Daehn, G Vogler, T Grady, D AF Fenton, Gregg Caipen, Terry Daehn, Glenn Vogler, Tracy Grady, Dennis BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI SHOCK-LESS HIGH RATE COMPACTION OF POROUS BRITTLE MATERIALS SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Granular compaction; Porous materials; CALE ID DYNAMIC COMPACTION AB The dynamic behavior of granular materials such as granular silica (sand), technical ceramics, and porous geological substances has importance to a variety of engineering applications. Although the mechanical behaviors of sand and other granular ceramics have been studied extensively for several decades, the dynamic behavior of such materials remains poorly understood. This paper describes how instrumented electromagnetic tube compression driven by capacitive discharge can be used to measure compaction of porous materials at high and controlled strain rates. The technique relics on electromagnetically crushing a powder-filled conductive tube. By measuring the current as a function of time and the tube displacement through Photon Doppler Velocimetry (PDV) sufficient data can be obtained to reveal the behavior of the porous material. The method will be described in detail and example data will be shown for compaction of silica sand. C1 [Fenton, Gregg; Caipen, Terry; Grady, Dennis] Appl Res Associates, 4300 San Mateo Blvd,A-220, Albuquerque, NM 87110 USA. [Daehn, Glenn] Ohio State Univ, Dept Mat Sci & Engn, Columbus, OH 43210 USA. [Vogler, Tracy] Sandia Natl Labs, Solid Dynam & Energet Mat Dept, Albuquerque, NM 87185 USA. RP Fenton, G (reprint author), Appl Res Associates, 4300 San Mateo Blvd,A-220, Albuquerque, NM 87110 USA. OI Daehn, Glenn/0000-0002-5493-7902 FU Sandia National Laboratories and Tracy Vogler [PO 208726] FX We gratefully acknowledge support granted under Contract PO 208726 from Sandia National Laboratories and Tracy Vogler for his guidance. NR 10 TC 0 Z9 0 U1 1 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1337 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100315 ER PT S AU Fredenburg, DA Vogler, TJ Thadhani, NN AF Fredenburg, D. A. Vogler, T. J. Thadhani, N. N. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI MESO-SCALE SIMULATION OF THE SHOCK COMPRESSION RESPONSE OF EQUIAXED AND NEEDLE MORPHOLOGY AL 6061-T6 POWDERS SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Al 6061-T6; meso-scale simulation; dynamic compaction; CTH ID CONSOLIDATION AB With component sizes approaching the mesoscale, conventional size microstructures offer insufficient homogeneity in mechanical properties, forcing microstructures to be reduced to the nanoscale. This work examines the effect of a nanocrystalline surface layer on the dynamic consolidation response of two different morphology Al 6061-T6 powders. Shock-propagation through cquiaxed and needle morphology Al 6061-T6 powder beds initially at 73.5 and 75.0 % theoretical density, respectively, is simulated at constant particle velocities ranging between 150 and 850 m/s. Shock velocity-particle velocity relationships are determined for powders both with and without the presence of a 2 pm high strength surface layer, which is representative of a nanocrystalline surface layer. Significant deviations in dynamic response are observed with the presence of the surface layer, especially at lower particle velocities. The equation of state (FOS) for both the homogeneous particles and those with a high strength surface layer are found to be best represented by a piecewise EOS. C1 [Fredenburg, D. A.; Thadhani, N. N.] Georgia Inst Technol, Mat Sci & Engn, 771 Ferst Dr, Atlanta, GA 30332 USA. [Vogler, T. J.] Sandia Natl Labs, Livermore, CA 94550 USA. RP Fredenburg, DA (reprint author), Georgia Inst Technol, Mat Sci & Engn, 771 Ferst Dr, Atlanta, GA 30332 USA. FU Laboratory Directed Research and Development Program of Sandia National Laboratories; National Nuclear Security Administration [DE-AC04-94AL85000] FX Funding for this research was provided by the Laboratory Directed Research and Development Program of Sandia National Laboratories, a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration under Contract DE-AC04-94AL85000. NR 10 TC 2 Z9 2 U1 2 U2 3 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1341 EP + PG 2 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100316 ER PT S AU Brundage, AL AF Brundage, A. L. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI EOS DEVELOPMENT AND NUMERICAL MODELING OF CL-20 COMPACTION SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Porous materials; equation of state; intergranular stress; uncertainty quantification AB The response of low-density pressings (64-70% theoretical maximum density) of CL-20 (Hexanitrohexaazaisowurtzitane) to shock impact has been investigated with numerical simulation using BN (Baer-Nunziato) multiphase modeling. Validation data for the modeling was acquired from wave profiles measured with VISAR from low-velocity impact gas-gun experiments. Previously unreported equation of state (EOS) data for CL-20 was determined to support the numerical modeling. An intergranular stress relationship, which was needed for the multiphase modeling, was determined from the dynamic loading data. Additionally, a Mie-Gruneisen equation of state for crystalline CL-20 was constructed from previously reported diamond anvil cell (DAC) isothermal compression experiments. The predictions of the observed elastic wave precursors and compaction wave profiles were in good agreement with the data over the range of impact velocities reported herein. A multiphase model is needed to describe the deflagration-to-detonation transition (DDT) in porous CL-20 samples initiated by dynamic compaction. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Brundage, AL (reprint author), Sandia Natl Labs, MS 0836,POB 5800, Albuquerque, NM 87185 USA. NR 12 TC 0 Z9 0 U1 1 U2 3 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1365 EP 1368 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100322 ER PT S AU Stahl, DB Sheffield, SA Dattelbaum, DM AF Stahl, David B. Sheffield, Stephen A. Dattelbaum, Dana M. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI METHOD FOR PRESSING POWDERED EXPLOSIVES IN TARGET ASSEMBLIES FOR GAS GUN-DRIVEN INITIATION EXPERIMENTS SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE Magnetic gauge; ammonium nitrate; powder explosive pressing ID LANL AB In order to obtain an equation of state (EOS) and initiation information for a powdered explosive at the lower density ranges, it is necessary to press the material into the gas gun target assembly. Pressed pellets can be built into targets at the higher densities where they have physical integrity, but are difficult or impossible to handle at low densities. We have a need to employ the multiple magnetic gauge technique to measure the EOS and initiation data on low density, powdered explosives such as ammonium nitrate (AN). A "half cell" target assembly has been designed and built that has a magnetic gauge membrane glued to a triangular shaped cavity which can be loaded from the cell side. A pressing system has been built that uses a load cell to monitor the force exerted on a pressing stemple that fits into the triangular cavity. A force vs. density curve can be obtained for the particular powder and stemple/cell combination. Using this, the powdered explosive can be loaded to the desired density by pressing in increments to a given force. After the cell is loaded, a triangular plug is glued into the side to confine the sample. This paper describes the method of loading the cells with examples of pressing AN, and other powders into the target assemblies at different densities. C1 [Stahl, David B.; Sheffield, Stephen A.; Dattelbaum, Dana M.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Stahl, DB (reprint author), Los Alamos Natl Lab, MS P952, Los Alamos, NM 87545 USA. NR 5 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1369 EP 1372 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100323 ER PT S AU Cooper, MA Brundage, AL Dudley, EC AF Cooper, Marcia A. Brundage, Aaron L. Dudley, Evan C. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI STATIC AND DYNAMIC COMPACTION OF CL-20 POWDERS SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE densification; high-pressure effects; equations of state; interferometry; impact testing; shock wave effects; porous materials ID HEXANITROHEXAAZAISOWURTZITANE AB Hexanitrohexaazaisowurtzitane (CL-20) powders were compacted under quasi-static and dynamic loading conditions. A uniaxial compression apparatus quasi-statically compressed the powders to 90% theoretical maximum density with applied stresses up to 0.4 GPa. Dynamic compaction measurements using low-density pressings approximately 64% theoretical maximum density (TMD) were obtained in a single-stage gas gun at impact velocities between 0.17-0.95 km/s. Experiments were conducted in a reverse ballistic arrangement in which the projectile contained the CL-20 powder bed and impacted a target consisting of an aluminized window. VISAR-measured particle velocities at the explosive-window interface determined the shock Hugoniot states for pressures up to 1.3 GPa. Approved for public release, SAND2009-4810C. C1 [Cooper, Marcia A.; Brundage, Aaron L.; Dudley, Evan C.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Cooper, MA (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 12 TC 0 Z9 0 U1 1 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1385 EP 1388 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100327 ER PT S AU Alexander, CS AF Alexander, C. S. BE Elert, ML Buttler, WT Furnish, MD Anderson, WW Proud, WG TI INDEX OF REFRACTION OF SHOCK LOADED SODA-LIME GLASS SO SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 16th Conference of the American-Physical-Society-Topical-Group on Shock Compression of Condensed Matter CY JUN 28-JUL 03, 2009 CL Nashville, TN SP Amer Phys Soc, Topical Grp DE soda-lime glass; index of refraction; VISAR window ID FUSED-SILICA; INTERFEROMETER; SAPPHIRE; WAVE AB Soda-lime glass (SLG) is a potential low-cost VISAR window for use at moderate shock pressures (up to 24-30 GPa) where the material remains transparent. In order for SLG to be practical as a VISAR window, the correction factor, which describes the frequency correction related to the strain dependence of the refractive index, and hence the index of refraction itself, must be characterized as a function of pressure. Characterization data are reported in this paper and compared to previous results. The present data show good agreement with those of Dandekar [J. Appl. Phys. 84, 6614 (1998)] and separate study results by Gibbons and Ahrens [J. Geophys. Res. 76, 5489 (1971)] up to 7 GPa. However, at stresses over 7 GPa, marked discrepancies are evident between the present data and that of Gibbons and Ahrens. Differences in test methods may explain these discrepancies. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Alexander, CS (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 13 TC 3 Z9 4 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0732-9 J9 AIP CONF PROC PY 2009 VL 1195 BP 1431 EP 1434 PG 4 WC Physics, Condensed Matter SC Physics GA BOG48 UT WOS:000276574100337 ER PT B AU Sheffield, SA Engelke, R AF Sheffield, S. A. Engelke, R. BE Horie, Y TI Condensed-Phase Explosives: Shock Initiation and Detonation Phenomena SO SHOCK WAVE SCIENCE AND TECHNOLOGY REFERENCE LIBRARY, VOL 3: SOLIDS II SE Shock Wave Science and Technology Reference Library LA English DT Article; Book Chapter ID REACTION-ZONE STRUCTURE; ISENTROPIC COMPRESSION EXPERIMENTS; CHAPMAN-JOUGUET PRESSURE; LIQUID CARBON-DISULFIDE; TRANSIENT HIGH-PRESSURE; SOLID HIGH EXPLOSIVES; EQUATION-OF-STATE; PENTAERYTHRITOL TETRANITRATE; Z-ACCELERATOR; VELOCITY C1 [Sheffield, S. A.; Engelke, R.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Sheffield, SA (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 118 TC 7 Z9 7 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES BN 978-3-540-77078-7 J9 SHOCK WAVE SCI TECHN PY 2009 VL 3 BP 1 EP 64 PG 64 WC Mechanics SC Mechanics GA BKD51 UT WOS:000267822900001 ER PT B AU Tang, Z Aidun, JB AF Tang, Z. Aidun, J. B. BE Horie, Y TI Combined Compression and Shear Plane Waves SO SHOCK WAVE SCIENCE AND TECHNOLOGY REFERENCE LIBRARY, VOL 3: SOLIDS II SE Shock Wave Science and Technology Reference Library LA English DT Article; Book Chapter ID PLATE IMPACT EXPERIMENT; PARTICLE-VELOCITY HISTORIES; 6061-T6 ALUMINUM; ISENTROPIC COMPRESSION; PHASE-TRANSFORMATIONS; HIGH-PRESSURES; HALF-SPACE; SHOCK; SOLIDS; FRICTION C1 [Tang, Z.] Univ Sci & Technol China, Dept Modern Mech, Hefei 230026, Anhui, Peoples R China. [Aidun, J. B.] Sandia Natl Labs, Computat Comp Informat & Math Ctr, Multiscale Dynam Mat Modeling Dept, Albuquerque, NM 87185 USA. [Aidun, J. B.] Los Alamos Natl Lab, Equat State & Mech Mat Grp T1, Los Alamos, NM 87545 USA. [Aidun, J. B.] Sandia Natl Labs, Mat Mech Dept, Albuquerque, NM 87185 USA. RP Tang, Z (reprint author), Univ Sci & Technol China, Dept Modern Mech, Hefei 230026, Anhui, Peoples R China. EM zptang@ustc.edu.cn NR 78 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES BN 978-3-540-77078-7 J9 SHOCK WAVE SCI TECHN PY 2009 VL 3 BP 109 EP 167 PG 59 WC Mechanics SC Mechanics GA BKD51 UT WOS:000267822900003 ER PT B AU Grady, D AF Grady, D. BE Horie, Y TI Dynamic Fragmentation of Solids SO SHOCK WAVE SCIENCE AND TECHNOLOGY REFERENCE LIBRARY, VOL 3: SOLIDS II SE Shock Wave Science and Technology Reference Library LA English DT Article; Book Chapter ID SILICON-CARBIDE; SIZE DISTRIBUTION; RANDOM FRACTURE; BRITTLE SOLIDS; STATISTICS; DISTRIBUTIONS; VELOCITY; FAILURE; COMMINUTION; DIMENSIONS C1 [Grady, D.] Sandia Natl Labs, Livermore, CA 94550 USA. [Grady, D.] Appl Res Associates, Albuquerque, NM 87110 USA. RP Grady, D (reprint author), Appl Res Associates, 4300 San Mateo Blvd NE,A-220, Albuquerque, NM 87110 USA. EM dgrrady@ara.com NR 104 TC 9 Z9 10 U1 1 U2 2 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES BN 978-3-540-77078-7 J9 SHOCK WAVE SCI TECHN PY 2009 VL 3 BP 169 EP 276 PG 108 WC Mechanics SC Mechanics GA BKD51 UT WOS:000267822900004 ER PT B AU Laurence, SJ Deiterding, R Hornung, HG AF Laurence, S. J. Deiterding, R. Hornung, H. G. BE Hannemann, K Seiler, F TI Tandem spheres in hypersonic flow SO SHOCK WAVES, VOL 1, PROCEEDINGS LA English DT Proceedings Paper CT 26th International Symposium on Shock Waves CY JUL 15-20, 2007 CL Gottingen, GERMANY SP German Aerosp Ctr, French German Res Inst St Louis C1 [Laurence, S. J.; Hornung, H. G.] CALTECH, Grad Aeronaut Labs, Pasadena, CA 91125 USA. [Deiterding, R.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Laurence, SJ (reprint author), CALTECH, Grad Aeronaut Labs, Pasadena, CA 91125 USA. RI Deiterding, Ralf/A-3394-2009 OI Deiterding, Ralf/0000-0003-4776-8183 NR 4 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY BN 978-3-540-85167-7 PY 2009 BP 713 EP + DI 10.1007/978-3-540-85168-4_115 PG 2 WC Chemistry, Physical; Energy & Fuels; Engineering, Mechanical SC Chemistry; Energy & Fuels; Engineering GA BKZ44 UT WOS:000269686200115 ER PT B AU Niederhaus, JHJ Ranjan, D Oakley, JG Anderson, MH Greenough, JA Bonazza, R AF Niederhaus, J. H. J. Ranjan, D. Oakley, J. G. Anderson, M. H. Greenough, J. A. Bonazza, R. BE Hannemann, K Seiler, F TI Computations in 3D for shock-induced distortion of a light spherical gas inhomogeneity SO SHOCK WAVES, VOL 2, PROCEEDINGS LA English DT Proceedings Paper CT 26th International Symposium on Shock Waves CY JUL 15-20, 2007 CL Gottingen, GERMANY SP German Aerosp Ctr, French German Res Inst St Louis AB Results are presented from a series of 3D numerical simulations for shock-bubble interactions, for a spherical helium bubble in air or nitrogen initially at atmospheric pressure (A approximate to -0.75), accelerated by a planar shock wave of Mach number M = 1.45, 2.08, or 2.95. The simulations are carried out using a multifluid, adaptive Eulerian Godunov code at a fine-grid resolution of R-100. The computed solutions clearly resolve well-known shock refraction and vortex formation processes. Further, distinct, counter-rotating secondary vortex rings are observed to form in the flowfield as a result of irregular shock refraction effects. The temporal development of the the bubble's streamwise dimension and the mixing of bubble and ambient fluid are shown to collapse onto nearly self-similar trends on timescales based on a 1D gasdynamics analysis. C1 [Niederhaus, J. H. J.; Ranjan, D.; Oakley, J. G.; Anderson, M. H.; Bonazza, R.] Univ Wisconsin, Dept Engn Phys, 1500 Engn Dr, Madison, WI 53706 USA. [Greenough, J. A.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Niederhaus, JHJ (reprint author), Univ Wisconsin, Dept Engn Phys, 1500 Engn Dr, Madison, WI 53706 USA. NR 8 TC 4 Z9 4 U1 0 U2 2 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY BN 978-3-540-85180-6 PY 2009 BP 1169 EP + DI 10.1007/978-3-540-85181-3_60 PG 2 WC Engineering, Mechanical; Mechanics; Physics, Applied; Physics, Multidisciplinary SC Engineering; Mechanics; Physics GA BKZ48 UT WOS:000269687500060 ER PT B AU Krivets, VV Long, CC Jacobs, JW Greenough, JA AF Krivets, V. V. Long, C. C. Jacobs, J. W. Greenough, J. A. BE Hannemann, K Seiler, F TI Shock tube experiments and numerical simulation of the single mode three-dimensional Richtmyer-Meshkov instability SO SHOCK WAVES, VOL 2, PROCEEDINGS LA English DT Proceedings Paper CT 26th International Symposium on Shock Waves CY JUL 15-20, 2007 CL Gottingen, GERMANY SP German Aerosp Ctr, French German Res Inst St Louis AB A vertical shock tube is used to perform experiments on the single-mode three-dimensional Richtmyer-Meshkov Instability. The interface is formed using apposed flows of air and SF6 and the perturbation is created by the periodic motion of the gases within the shock tube. Planar laser induced fluorescence is used for flow visualization. Experimental results were obtained with a shock Mach number of 1.2. A three-dimensional numerical simulation of this experiment was conducted the results of which are compared with the experimental images and measurements. C1 [Krivets, V. V.; Long, C. C.; Jacobs, J. W.] Univ Arizona, 1130 N Mt Ave, Tucson, AZ 85721 USA. [Greenough, J. A.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Krivets, VV (reprint author), Univ Arizona, 1130 N Mt Ave, Tucson, AZ 85721 USA. FU Lawrence Livermore National Laboratory FX This research was supported by Lawrence Livermore National Laboratory NR 9 TC 3 Z9 3 U1 1 U2 7 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY BN 978-3-540-85180-6 PY 2009 BP 1205 EP + DI 10.1007/978-3-540-85181-3_66 PG 3 WC Engineering, Mechanical; Mechanics; Physics, Applied; Physics, Multidisciplinary SC Engineering; Mechanics; Physics GA BKZ48 UT WOS:000269687500066 ER PT B AU Madduri, K Bader, DA Berry, JW Crobak, JR AF Madduri, Kamesh Bader, David A. Berry, Jonathan W. Crobak, Joseph R. BE Demetrescu, C Goldberg, AV Johnson, DS TI Parallel Shortest Path Algorithms for Solving Large-Scale Instances SO SHORTEST PATH PROBLEM SE DIMACS: Series in Discrete Mathematics and Theoretical Computer Science LA English DT Proceedings Paper CT 9th DIMACS Workshop on Implementation Challenge CY NOV 13-14, 2006 CL Rutgers Unv, Piscataway, NJ SP DIMACS HO Rutgers Unv DE shortest paths; parallel algorithms; multithreaded architectures ID FIBONACCI HEAPS; CENTRALITY; NETWORKS; GRAPHS; TIME; BETWEENNESS; COMPUTATION; TREES; WEB AB We present an experimental study of the single source shortest path problem with non-negative edge weights (NSSP) on large-scale graphs using the Delta-stepping parallel algorithm. We report performance results on the Cray MTA-2, a multithreaded parallel computer. The MTA-2 is a high-end shared memory system offering two unique features that aid the efficient parallel implementation of irregular algorithms: the ability to exploit fine-grained parallelism, and low-overhead synchronization primitives. Our implementation exhibits remarkable parallel speedup when compared with competitive sequential algorithms, for low-diameter sparse graphs. For instance, Delta-stepping on a directed scale-free graph of 100 million vertices and 1 billion edges takes less than ten seconds on 40 processors of the MTA-2, with a relative speedup of close to 30. To our knowledge, these are the first performance results of a shortest path problem on realistic graph instances in the order of billions of vertices and edges. C1 [Madduri, Kamesh] Lawrence Berkeley Natl Lab, Computat Res Div, Berkeley, CA USA. RP Madduri, K (reprint author), Lawrence Berkeley Natl Lab, Computat Res Div, Berkeley, CA USA. EM kamesh@gatech.edu; bader@cc.gatech.edu; jberry@sandia.gov; crobakj@cs.rutgers.edu RI Bader, David/F-1028-2013 NR 63 TC 3 Z9 3 U1 0 U2 3 PU AMER MATHEMATICAL SOC PI PROVIDENCE PA P.O. BOX 6248, PROVIDENCE, RI 02940 USA BN 978-0-8218-4383-3 J9 DIMACS SER DISCRET M PY 2009 VL 74 BP 249 EP 290 PG 42 WC Computer Science, Interdisciplinary Applications; Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA BMF40 UT WOS:000272160800010 ER PT J AU Weber, AZ Newman, J AF Weber, Adam Z. Newman, John TI USING A QUASI-POTENTIAL TRANSFORMATION FOR MODELING DIFFUSION MEDIA IN POLYMER-ELECTROLYTE FUEL CELLS SO SIAM JOURNAL ON APPLIED MATHEMATICS LA English DT Article DE modeling; PEFC; gas-diffusion layer; cathode; water management; quasi potential ID WATER TRANSPORT; MICROPOROUS LAYERS; 2-PHASE TRANSPORT; POROUS CATHODE; PERFORMANCE; MIGRATION; FLOW; PERMEABILITY; MANAGEMENT; REDUCTION AB In this paper, a quasi-potential approach along with conformal mapping is used to model the diffusion media of a polymer-electrolyte fuel cell. This method provides a series solution that is grid independent and only requires integration along a single boundary to solve the problem. The approach accounts for nonisothermal phenomena, two-phase flow, correct placement of the electronic potential boundary condition, and multilayer media. The method is applied to a cathode diffusion medium to explore the interplay between water and thermal management and performance, the impact of the rib-to-channel ratio, and the existence of diffusion under the rib and flooding phenomena. C1 [Weber, Adam Z.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Newman, John] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. RP Weber, AZ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. EM azweber@lbl.gov; newman@newman.cchem.berkeley.edu OI Weber, Adam/0000-0002-7749-1624 FU U. S. Department of Energy [DE-AC02-05CH11231] FX Received by the editors March 31, 2008; accepted for publication ( in revised form) September 2, 2008; published electronically July 17, 2009. This work was supported by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Hydrogen, Fuel Cell, and Infrastructure Technologies, of the U. S. Department of Energy under contract number DE-AC02-05CH11231, and by industrial partners. NR 46 TC 5 Z9 5 U1 0 U2 3 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 0036-1399 J9 SIAM J APPL MATH JI SIAM J. Appl. Math. PY 2009 VL 70 IS 2 BP 488 EP 509 DI 10.1137/08071973X PG 22 WC Mathematics, Applied SC Mathematics GA 482BJ UT WOS:000268858200005 ER PT J AU Reluga, TC Dahari, H Perelson, AS AF Reluga, Timothy C. Dahari, Harel Perelson, Alan S. TI ANALYSIS OF HEPATITIS C VIRUS INFECTION MODELS WITH HEPATOCYTE HOMEOSTASIS SO SIAM JOURNAL ON APPLIED MATHEMATICS LA English DT Article DE HCV; viral dynamics; bifurcation analysis ID DYNAMICS IN-VIVO; LIVER-TRANSPLANTATION; VIRAL DYNAMICS; PLUS RIBAVIRIN; REPLICATION; KINETICS; INTERFERON; CLEARANCE; CELLS; RNA AB Recently, we developed a model for hepatitis C virus (HCV) infection that explicitly includes proliferation of infected and uninfected hepatocytes. The model predictions agree with a large body of experimental observations on the kinetics of HCV RNA change during acute infection, under antiviral therapy, and after the cessation of therapy. Here we mathematically analyze and characterize both the steady state and dynamical behavior of this model. The analyses presented here not only are important for HCV infection but also should be relevant for modeling other infections with hepatotropic viruses, such as hepatitis B virus. C1 [Reluga, Timothy C.] Penn State Univ, Dept Math, University Pk, PA 16802 USA. [Dahari, Harel] Univ Illinois, Dept Med, Chicago, IL 60612 USA. [Perelson, Alan S.] Los Alamos Natl Lab, Div Theoret, Theoret Biol & Biophys Grp, Los Alamos, NM 87545 USA. RP Reluga, TC (reprint author), Penn State Univ, Dept Math, University Pk, PA 16802 USA. EM timothy@reluga.org; daharihe@uic.edu; asp@lanl.gov FU NCRR NIH HHS [P20 RR018754, P20 RR018754-05, R01 RR006555-17, R01 RR006555]; NIAID NIH HHS [R01 AI065256-02, R37 AI028433, R37 AI028433-18, R01 AI028433, R01 AI065256]; NIH HHS [R01 OD011095] NR 52 TC 13 Z9 16 U1 0 U2 0 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 0036-1399 J9 SIAM J APPL MATH JI SIAM J. Appl. Math. PY 2009 VL 69 IS 4 BP 999 EP 1023 DI 10.1137/080714579 PG 25 WC Mathematics, Applied SC Mathematics GA 403SV UT WOS:000263103200005 PM 19183708 ER PT J AU Kubzina, V Gautesen, AK Fradkin, LJ AF Kubzina, V. Gautesen, A. K. Fradkin, L. Ju. TI DIFFRACTION BY A SEMI-INFINITE INTERFACIAL CRACK SANDWICHED BETWEEN TWO ISOTROPIC HALF PLANES SO SIAM JOURNAL ON APPLIED MATHEMATICS LA English DT Article DE diffraction; interfacial crack; semianalytical approach ID ROUGH SURFACES; SCATTERING; WAVE AB This paper addresses the canonical two dimensional problem of diffraction of the plane wave by a semi-infinite interfacial crack sandwiched between two isotropic solids. We restrict ourselves to a ubiquitous case of solids whose contact boundary does not support the Stoneley wave. Its solution can be used in applications to model diffraction from curved cracks with curvature that is small compared to a wavelength. C1 [Kubzina, V.; Fradkin, L. Ju.] London S Bank Univ, Fac Engn Sci & Built Environm, Elect Comp & Commun Engn Dept, Waves & Fields Res Grp, London SE1 0AA, England. [Fradkin, L. Ju.] Iowa State Univ, Dept Math, Ames, IA 50011 USA. [Fradkin, L. Ju.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. RP Kubzina, V (reprint author), Tynemarch Syst Engn Ltd, Crossways House,54-60 S St, Surrey RH4 2HQ, England. EM vkubzina@tynemarch.co.uk; gautesen@scl.ameslab.gov; fradkil@lsbu.ac.uk NR 25 TC 0 Z9 0 U1 0 U2 1 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 0036-1399 J9 SIAM J APPL MATH JI SIAM J. Appl. Math. PY 2009 VL 69 IS 5 BP 1309 EP 1333 DI 10.1137/070711517 PG 25 WC Mathematics, Applied SC Mathematics GA 421IO UT WOS:000264352800006 ER PT J AU Wilkening, J AF Wilkening, Jon TI PRACTICAL ERROR ESTIMATES FOR REYNOLDS' LUBRICATION APPROXIMATION AND ITS HIGHER ORDER CORRECTIONS SO SIAM JOURNAL ON MATHEMATICAL ANALYSIS LA English DT Article DE incompressible flow; lubrication theory; asymptotic expansion; Stokes equations; thin domain; a priori error estimates ID STOKES EQUATIONS; LAYER; FLOW AB Reynolds' lubrication approximation is used extensively to study flows between moving machine parts, in narrow channels, and in thin films. The solution of Reynolds' equation may be thought of as the zeroth order term in an expansion of the solution of the Stokes equations in powers of the aspect ratio e of the domain. In this paper, we show how to compute the terms in this expansion to arbitrary order on a two-dimensional, x-periodic domain and derive rigorous, a priori error bounds for the difference between the exact solution and the truncated expansion solution. Unlike previous studies of this sort, the constants in our error bounds either are independent of the function h(x) describing the geometry or depend on h and its derivatives in an explicit, intuitive way. Specifically, if the expansion is truncated at order 2k, the error is O(epsilon(2k+2)), and h enters into the error bound only through its first and third inverse moments integral(1)(0)h(x)(-m) dx, m = 1, 3, and via the max norms parallel to 1/l!(hl-1)partial derivative(l)(x)h parallel to(infinity), 1 <= l <= 2k + 2. We validate our estimates by comparing with finite element solutions and present numerical evidence that suggests that even when h is real analytic and periodic, the expansion solution forms an asymptotic series rather than a convergent series. C1 [Wilkening, Jon] Univ Calif Berkeley, Dept Math, Berkeley, CA 94720 USA. [Wilkening, Jon] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Wilkening, J (reprint author), Univ Calif Berkeley, Dept Math, Berkeley, CA 94720 USA. EM wilken@math.berkeley.edu FU Office of Science, Advanced Scientific Computing Research, U.S. Department of Energy [DE-AC02-05CH11231] FX This work was supported in part by the Director, Office of Science, Advanced Scientific Computing Research, U.S. Department of Energy contract DE-AC02-05CH11231. NR 25 TC 8 Z9 8 U1 0 U2 3 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 0036-1410 J9 SIAM J MATH ANAL JI SIAM J. Math. Anal. PY 2009 VL 41 IS 2 BP 588 EP 630 DI 10.1137/070695447 PG 43 WC Mathematics, Applied SC Mathematics GA 467NH UT WOS:000267745100006 ER PT J AU Avron, H Ng, E Toledo, S AF Avron, Haim Ng, Esmond Toledo, Sivan TI USING PERTURBED QR FACTORIZATIONS TO SOLVE LINEAR LEAST-SQUARES PROBLEMS SO SIAM JOURNAL ON MATRIX ANALYSIS AND APPLICATIONS LA English DT Article DE preconditioning sparse QR; iterative linear least-squares solvers ID INCREMENTAL CONDITION ESTIMATION; SPARSE MATRICES; ALGORITHM AB We propose and analyze a new tool to help solve sparse linear least-squares problems min(x) parallel to Ax-b parallel to(2). Our method is based on a sparse QR factorization of a low-rank perturbation (A) over bar of A. More precisely, we show that the R factor of (A) over bar is an effective preconditioner for the least-squares problem min(x) parallel to Ax-b parallel to(2), when solved using LSQR. We propose applications for the new technique. When A is rank deficient, we can add rows to ensure that the preconditioner is well conditioned without column pivoting. When A is sparse except for a few dense rows, we can drop these dense rows from A to obtain (A) over bar. Another application is solving an updated or downdated problem. If R is a good preconditioner for the original problem A, it is a good preconditioner for the updated/downdated problem (A) over bar. We can also solve what-if scenarios, where we want to find the solution if a column of the original matrix is changed/removed. We present a spectral theory that analyzes the generalized spectrum of the pencil (A*A, R*R) and analyze the applications. C1 [Avron, Haim; Toledo, Sivan] Tel Aviv Univ, Raymond & Beverly Sackler Fac Exact Sci, Blavatnik Sch Comp Sci, IL-69978 Tel Aviv, Israel. [Ng, Esmond] Univ Calif Berkeley, Lawrence Berkeley Lab, Computat Res Div, Berkeley, CA 94720 USA. RP Avron, H (reprint author), Tel Aviv Univ, Raymond & Beverly Sackler Fac Exact Sci, Blavatnik Sch Comp Sci, IL-69978 Tel Aviv, Israel. EM haima@tau.ac.il; EGNg@lbl.gov; stoledo@tau.ac.il NR 30 TC 6 Z9 6 U1 0 U2 1 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 0895-4798 EI 1095-7162 J9 SIAM J MATRIX ANAL A JI SIAM J. Matrix Anal. Appl. PY 2009 VL 31 IS 2 BP 674 EP 693 DI 10.1137/070698725 PG 20 WC Mathematics, Applied SC Mathematics GA 467NL UT WOS:000267745500024 ER PT J AU Ostrouchov, G AF Ostrouchov, George TI A MATRIX COMPUTATION VIEWOF FASTMAP AND ROBUSTMAP DIMENSION REDUCTION ALGORITHMS SO SIAM JOURNAL ON MATRIX ANALYSIS AND APPLICATIONS LA English DT Article DE Householder reflection; metric space embedding; principal components analysis; singular value decomposition; BLAS ID STATISTICAL VARIABLES; PRINCIPAL COMPONENTS; COMPLEX AB Given a set of pairwise object distances and a dimension k, FastMap and RobustMap algorithms compute a set of k-dimensional coordinates for the objects. These metric space embedding methods implicitly assume a higher-dimensional coordinate representation and are a sequence of translations and orthogonal projections based on a sequence of object pair selections (called pivot pairs). We develop a matrix computation viewpoint of these algorithms that operates on the coordinate representation explicitly using Householder reflections. The resulting coordinate mapping algorithm (CMA) is a fast approximate alternative to truncated principal component analysis (PCA), and it brings the FastMap and RobustMap algorithms into the mainstream of numerical computation where standard BLAS building blocks are used. Motivated by the geometric nature of the embedding methods, we further show that truncated PCA can be computed with CMA by specific pivot pair selections. Describing FastMap, RobustMap, and PCA as CMA computations with different pivot pair choices unifies the methods along a pivot pair selection spectrum. We also sketch connections to the semidiscrete decomposition and the QLP decomposition. C1 Oak Ridge Natl Lab, Stat & Data Sci Grp, Div Math & Comp Sci, Oak Ridge, TN 37830 USA. RP Ostrouchov, G (reprint author), Oak Ridge Natl Lab, Stat & Data Sci Grp, Div Math & Comp Sci, Oak Ridge, TN 37830 USA. EM ostrouchovg@ornl.gov FU Oak Ridge National Laboratory (ORNL); U. S. Department of Energy FX This research was sponsored by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory (ORNL) and by the Office of Advanced Scientific Computing Research, Office of Science, of the U. S. Department of Energy through the Scientific Discovery through Advanced Computing (SciDAC) program's Visualization and Analytics Center for Enabling Technologies (VACET). ORNL is managed by UT-Battelle, LLC for the U. S. Department of Energy under contract DE-AC05-00OR22725. NR 13 TC 0 Z9 0 U1 0 U2 1 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 0895-4798 J9 SIAM J MATRIX ANAL A JI SIAM J. Matrix Anal. Appl. PY 2009 VL 31 IS 3 BP 1351 EP 1360 DI 10.1137/070710767 PG 10 WC Mathematics, Applied SC Mathematics GA 565DO UT WOS:000275269600001 ER PT J AU Xia, JL Chandrasekaran, S Gu, M Li, XS AF Xia, Jianlin Chandrasekaran, Shivkumar Gu, Ming Li, Xiaoye S. TI SUPERFAST MULTIFRONTAL METHOD FOR LARGE STRUCTURED LINEAR SYSTEMS OF EQUATIONS SO SIAM JOURNAL ON MATRIX ANALYSIS AND APPLICATIONS LA English DT Article DE structured direct solver; hierarchically semiseparable matrix; low-rank property; superfast multifrontal method; nested dissection ID HIERARCHICALLY SEMISEPARABLE REPRESENTATIONS; REVEALING QR-FACTORIZATIONS; FINITE-ELEMENT MESHES; NESTED DISSECTION; GAUSSIAN-ELIMINATION; ELLIPTIC-OPERATORS; MATRICES; SOLVER; COEFFICIENTS; ALGORITHM AB In this paper we develop a fast direct solver for large discretized linear systems using the supernodal multifrontal method together with low-rank approximations. For linear systems arising from certain partial differential equations such as elliptic equations, during the Gaussian elimination of the matrices with proper ordering, the fill-in has a low-rank property: all off-diagonal blocks have small numerical ranks with proper definition of off-diagonal blocks. Matrices with this low-rank property can be efficiently approximated with semiseparable structures called hierarchically semiseparable (HSS) representations. We reveal the above low-rank property by ordering the variables with nested dissection and eliminating them with the multifrontal method. All matrix operations in the multifrontal method are performed in HSS forms. We present efficient ways to organize the HSS structured operations along the elimination. Some fast HSS matrix operations using tree structures are proposed. This new structured multifrontal method has nearly linear complexity and a linear storage requirement. Thus, we call it a superfast multifrontal method. It is especially suitable for large sparse problems and also has natural adaptability to parallel computations and great potential to provide effective preconditioners. Numerical results demonstrate the efficiency. C1 [Xia, Jianlin] Purdue Univ, Dept Math, W Lafayette, IN 47907 USA. [Chandrasekaran, Shivkumar] Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA. [Gu, Ming] Univ Calif Berkeley, Dept Math, Berkeley, CA 94720 USA. [Li, Xiaoye S.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Xia, JL (reprint author), Purdue Univ, Dept Math, W Lafayette, IN 47907 USA. EM xiaj@math.purdue.edu; shiv@ece.ucsb.edu; mgu@math.berkeley.edu; xsli@lbl.gov RI Gu, Min/B-6627-2008 NR 46 TC 72 Z9 73 U1 0 U2 1 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 0895-4798 J9 SIAM J MATRIX ANAL A JI SIAM J. Matrix Anal. Appl. PY 2009 VL 31 IS 3 BP 1382 EP 1411 DI 10.1137/09074543X PG 30 WC Mathematics, Applied SC Mathematics GA 565DO UT WOS:000275269600003 ER PT J AU Embree, M Lehoucq, RB AF Embree, Mark Lehoucq, Richard B. TI DYNAMICAL SYSTEMS AND NON-HERMITIAN ITERATIVE EIGENSOLVERS SO SIAM JOURNAL ON NUMERICAL ANALYSIS LA English DT Article DE eigenvalues; dynamical systems; inverse iteration; preconditioned eigensolvers; geometric invariants ID EIGENVALUE PROBLEMS; MOLECULAR-DYNAMICS; QR ALGORITHM; MATRICES; FLOWS; EIGENPROBLEM AB Simple preconditioned iterations can provide an efficient alternative to more elaborate eigenvalue algorithms. We observe that these simple methods can be viewed as forward Euler discretizations of well-known autonomous differential equations that enjoy appealing geometric properties. This connection facilitates novel results describing convergence of a class of preconditioned eigensolvers to the leftmost eigenvalue, provides insight into the role of orthogonality and biorthogonality, and suggests the development of new methods and analyses based on more sophisticated discretizations. These results also highlight the effect of preconditioning on the convergence and stability of the continuous-time system and its discretization. C1 [Embree, Mark] Rice Univ, Dept Computat & Appl Math, Houston, TX 77005 USA. [Lehoucq, Richard B.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Embree, M (reprint author), Rice Univ, Dept Computat & Appl Math, 6100 Main St,MS 134, Houston, TX 77005 USA. EM embree@rice.edu; rblehou@sandia.gov NR 43 TC 4 Z9 4 U1 1 U2 3 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 0036-1429 EI 1095-7170 J9 SIAM J NUMER ANAL JI SIAM J. Numer. Anal. PY 2009 VL 47 IS 2 BP 1445 EP 1473 DI 10.1137/07070187X PG 29 WC Mathematics, Applied SC Mathematics GA 441OQ UT WOS:000265778900027 ER PT J AU Kim, HH Tu, XM AF Kim, Hyea Hyun Tu, Xuemin TI A THREE-LEVEL BDDC ALGORITHM FOR MORTAR DISCRETIZATIONS SO SIAM JOURNAL ON NUMERICAL ANALYSIS LA English DT Article DE mortar discretization; balancing domain decomposition by constraints; three-level; domain decomposition; coarse problem; condition number ID BALANCING DOMAIN DECOMPOSITION; FINITE-ELEMENT-METHOD; PRIMAL FETI METHODS; ENERGY MINIMIZATION; POROUS-MEDIA; 3 DIMENSIONS; SPACES; DP; PRECONDITIONER; CONSTRAINTS AB In this paper, a three-level balancing domain decomposition by constraints (BDDC) algorithm is developed for the solutions of large sparse algebraic linear systems arising from the mortar discretization of elliptic boundary value problems. The mortar discretization is considered on geometrically nonconforming subdomain partitions. In two-level BDDC algorithms, the coarse problem needs to be solved exactly. However, its size will increase with the increase of the number of the subdomains. To overcome this limitation, the three-level algorithm solves the coarse problem inexactly while a good rate of convergence is maintained. This is an extension of previous work: the three-level BDDC algorithms for standard finite element discretization. Estimates of the condition numbers are provided for the three-level BDDC method, and numerical experiments are also discussed. C1 [Kim, Hyea Hyun] Chonnam Natl Univ, Dept Math, Kwangju 500757, South Korea. [Tu, Xuemin] Univ Calif Berkeley, Dept Math, Berkeley, CA 94720 USA. [Tu, Xuemin] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Kim, HH (reprint author), Chonnam Natl Univ, Dept Math, Kwangju 500757, South Korea. EM hyeahyun@gmail.com; xuemin@math.berkeley.edu RI Tu, Xuemin/D-9928-2011 NR 34 TC 8 Z9 8 U1 0 U2 0 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 0036-1429 EI 1095-7170 J9 SIAM J NUMER ANAL JI SIAM J. Numer. Anal. PY 2009 VL 47 IS 2 BP 1576 EP 1600 DI 10.1137/07069081X PG 25 WC Mathematics, Applied SC Mathematics GA 441OQ UT WOS:000265778900032 ER PT J AU Anitescu, M AF Anitescu, Mihai TI SPECTRAL FINITE-ELEMENT METHODS FOR PARAMETRIC CONSTRAINED OPTIMIZATION PROBLEMS SO SIAM JOURNAL ON NUMERICAL ANALYSIS LA English DT Article DE spectral approximations; orthogonal polynomials; parametric problems; stochastic finite element; constrained optimization ID PARTIAL-DIFFERENTIAL-EQUATIONS; ORTHOGONAL POLYNOMIALS; UNCERTAINTY ANALYSIS; APPROXIMATION; SENSITIVITY; ALGORITHM; MODELS AB We present a method to approximate the solution mapping of parametric constrained optimization problems. The approximation, which is of the spectral finite element type, is represented as a linear combination of orthogonal polynomials. Its coefficients are determined by solving an appropriate finite-dimensional constrained optimization problem. We show that, under certain conditions, the latter problem is solvable because it is feasible for a sufficiently large degree of the polynomial approximation and has an objective function with bounded level sets. In addition, the solutions of the finite-dimensional problems converge for an increasing degree of the polynomials considered, provided that the solutions exhibit a sufficiently large and uniform degree of smoothness. Our approach solves, in the case of optimization problems with uncertain parameters, the most computationally intensive part of stochastic finite-element approaches. We demonstrate that our framework is applicable to parametric eigenvalue problems. C1 Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. RP Anitescu, M (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. EM anitescu@mcs.anl.gov RI Barley, Kamal/F-9579-2011 OI Barley, Kamal/0000-0003-1874-9813 FU U.S. Department of Energy [DE-AC0206CH11357] FX This research was supported by the Mathematical, Information, and Computational Sciences Division subprogram of the Office of Advanced Scientific Computing Research, Office of Science, U.S. Department of Energy, under contract DE-AC0206CH11357. The U.S. Government retains a nonexclusive, royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for U. S. Government purposes. Copyright is owned by SIAM to the extent not limited by these rights. NR 27 TC 2 Z9 2 U1 0 U2 3 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 0036-1429 J9 SIAM J NUMER ANAL JI SIAM J. Numer. Anal. PY 2009 VL 47 IS 3 BP 1739 EP 1759 DI 10.1137/060676374 PG 21 WC Mathematics, Applied SC Mathematics GA 467NP UT WOS:000267745900007 ER PT J AU Bihari, BL Brown, PN AF Bihari, B. L. Brown, P. N. TI A LINEAR ALGEBRAIC ANALYSIS OF DIFFUSION SYNTHETIC ACCELERATION FOR THE BOLTZMANN TRANSPORT EQUATION II: THE SIMPLE CORNER BALANCE METHOD SO SIAM JOURNAL ON NUMERICAL ANALYSIS LA English DT Article DE Boltzmann transport; diffusion limit; diffusion synthetic acceleration; linear algebra; asymptotic analysis AB In this paper we apply the development and linear algebraic analysis of the diffusion synthetic acceleration method presented in [S. F. Ashby, P. N. Brown, M. R. Dorr, and A. C. Hindmarsh, SIAM J. Numer. Anal., 32 (1995), pp. 128-178] to a different spatial discretization. Our model equation is the monoenergetic, steady-state, linear Boltzmann transport equation in slab geometry. The discretization consists of a discrete ordinates collocation in angle and the simple corner balance method in space. By expressing diffusion synthetic acceleration in this formalism, asymptotic results are obtained that prove the effectiveness of the associated preconditioner in various limiting cases, including the asymptotic diffusion limit. These results hold for problems with nonconstant coefficients and nonuniform spatial zoning posed on finite domains with an incident flux at the boundaries. Numerical results confirm the theoretical estimates. C1 [Bihari, B. L.; Brown, P. N.] Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA 94550 USA. RP Bihari, BL (reprint author), Lawrence Livermore Natl Lab, ICON Consulting, Livermore, CA 94550 USA. EM bihari1@llnl.gov; pnbrown@llnl.gov FU [DE-AC52-07NA27344] FX This work was performed under the auspices of Lawrence Livermore National Security, LLC (LLNS) under contract DE-AC52-07NA27344. The U.S. Government retains a nonexclusive, royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for U.S. Government purposes. Copyright is owned by SIAM to the extent not limited by these rights. NR 10 TC 0 Z9 0 U1 1 U2 2 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 0036-1429 J9 SIAM J NUMER ANAL JI SIAM J. Numer. Anal. PY 2009 VL 47 IS 3 BP 1782 EP 1826 DI 10.1137/070693977 PG 45 WC Mathematics, Applied SC Mathematics GA 467NP UT WOS:000267745900009 ER PT J AU Badia, S Codina, R AF Badia, Santiago Codina, Ramon TI UNIFIED STABILIZED FINITE ELEMENT FORMULATIONS FOR THE STOKES AND THE DARCY PROBLEMS SO SIAM JOURNAL ON NUMERICAL ANALYSIS LA English DT Article DE Stokes-Darcy's problem; stabilized finite element methods; characteristic length scale; orthogonal subgrid scales ID INCOMPRESSIBLE FLOWS; ORTHOGONAL SUBSCALES; POROUS-MEDIUM; APPROXIMATION; EQUATIONS; DECOMPOSITION; SURFACE; MODELS AB In this paper we propose stabilized finite element methods for both Stokes' and Darcy's problems that accommodate any interpolation of velocities and pressures. Apart from the interest of this fact, the important issue is that we are able to deal with both problems at the same time, in a completely unified manner, in spite of the fact that the functional setting is different. Concerning the stabilization formulation, we discuss the effect of the choice of the length scale appearing in the expression of the stabilization parameters, both in what refers to stability and to accuracy. This choice is shown to be crucial in the case of Darcy's problem. As an additional feature of this work, we treat two types of stabilized formulations, showing that they have a very similar behavior. C1 [Badia, Santiago; Codina, Ramon] Univ Politecn Cataluna, CIMNE, ES-08034 Barcelona, Spain. RP Badia, S (reprint author), Sandia Natl Labs, MS-1320, Albuquerque, NM 87185 USA. EM sbadia@cimne.upc.edu; ramon.codina@upc.edu RI Codina, Ramon/I-2311-2014; Badia, Santiago/L-8565-2014 OI Codina, Ramon/0000-0002-7412-778X; Badia, Santiago/0000-0003-2391-4086 FU European Community through the Marie Curie contract NanoSim [MOIF-CT-2006-039522] FX This author's research was supported by the European Community through the Marie Curie contract NanoSim (MOIF-CT-2006-039522). NR 28 TC 39 Z9 39 U1 0 U2 4 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 0036-1429 J9 SIAM J NUMER ANAL JI SIAM J. Numer. Anal. PY 2009 VL 47 IS 3 BP 1971 EP 2000 DI 10.1137/08072632X PG 30 WC Mathematics, Applied SC Mathematics GA 467NP UT WOS:000267745900017 ER PT J AU Dohrmann, CR Widlund, OB AF Dohrmann, Clark R. Widlund, Olof B. TI AN OVERLAPPING SCHWARZ ALGORITHM FOR ALMOST INCOMPRESSIBLE ELASTICITY SO SIAM JOURNAL ON NUMERICAL ANALYSIS LA English DT Article DE domain decomposition; overlapping Schwarz; preconditioners; iterative methods; almost incompressible elasticity; mixed finite element methods ID SADDLE-POINT PROBLEMS; LINEAR ELASTICITY; STOKES EQUATIONS; PRECONDITIONERS; ELEMENT; DOMAINS AB Overlapping Schwarz methods are extended to mixed finite element approximations of linear elasticity which use discontinuous pressure spaces. The coarse component of the preconditioner is based on a low-dimensional space previously developed for scalar elliptic problems and a domain decomposition method of iterative substructuring type, i.e., a method based on nonoverlapping decompositions of the domain, while the local components of the preconditioner are based on solvers on a set of overlapping subdomains. A bound is established for the condition number of the algorithm which grows in proportion to the logarithm of the number of degrees of freedom in individual subdomains and, essentially, to the third power of the relative overlap between the overlapping subdomains, and which is independent of the Poisson ratio as well as jumps in the Lame parameters across the interface between the subdomains. A positive definite reformulation of the discrete problem makes the use of the standard preconditioned conjugate gradient method straightforward. Numerical results, which include a comparison with problems of compressible elasticity, illustrate the findings. C1 [Dohrmann, Clark R.] Sandia Natl Labs, Struct Dynam Res Dept, Albuquerque, NM 87185 USA. [Widlund, Olof B.] NYU, Courant Inst, Dept Math, New York, NY 10012 USA. RP Dohrmann, CR (reprint author), Sandia Natl Labs, Struct Dynam Res Dept, POB 5800, Albuquerque, NM 87185 USA. EM crdohrm@sandia.gov; widlund@cims.nyu.edu FU U.S. Department of Energy [DE-FG02-06ER25718, DE-FC02-01ER25482]; National Science Foundation [DMS-0513251] FX This author's work was supported in part by the U.S. Department of Energy under contracts DE-FG02-06ER25718 and DE-FC02-01ER25482 and in part by National Science Foundation grant DMS-0513251. NR 35 TC 34 Z9 34 U1 0 U2 5 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 0036-1429 J9 SIAM J NUMER ANAL JI SIAM J. Numer. Anal. PY 2009 VL 47 IS 4 BP 2897 EP 2923 DI 10.1137/080724320 PG 27 WC Mathematics, Applied SC Mathematics GA 499DD UT WOS:000270196200008 ER PT J AU Bochev, PB Ridzal, D AF Bochev, Pavel B. Ridzal, Denis TI AN OPTIMIZATION-BASED APPROACH FOR THE DESIGN OF PDE SOLUTION ALGORITHMS SO SIAM JOURNAL ON NUMERICAL ANALYSIS LA English DT Article DE optimization; fast solvers; multiphysics; advection-diffusion ID NAVIER-STOKES EQUATIONS; MULTIGRID METHODS; DECOMPOSITION; PRECONDITIONER; SYSTEMS; SOLVER AB We develop and analyze an optimization-based approach for the robust and efficient solution of PDE problems consisting of multiple physics operators with fundamentally different mathematical properties. Our approach relies on three essential steps: decomposition of the original problem into subproblems for which robust solution algorithms are available; integration of the subproblems into an equivalent PDE-constrained optimization problem; and solution of the resulting optimization problem either directly as a fully coupled algebraic system or in the null space of the PDE constraints. This strategy gives rise to a general approach for synthesizing robust solvers for complex coupled problems from solvers for their simpler physics components. C1 [Bochev, Pavel B.; Ridzal, Denis] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Bochev, PB (reprint author), Sandia Natl Labs, POB 5800,MS 1320, Albuquerque, NM 87185 USA. EM pbboche@sandia.gov; dridzal@sandia.gov NR 38 TC 6 Z9 6 U1 0 U2 1 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 0036-1429 EI 1095-7170 J9 SIAM J NUMER ANAL JI SIAM J. Numer. Anal. PY 2009 VL 47 IS 5 BP 3938 EP 3955 DI 10.1137/090748111 PG 18 WC Mathematics, Applied SC Mathematics GA 598KP UT WOS:000277836000015 ER PT J AU More, JJ Wild, SM AF More, Jorge J. Wild, Stefan M. TI BENCHMARKING DERIVATIVE-FREE OPTIMIZATION ALGORITHMS SO SIAM JOURNAL ON OPTIMIZATION LA English DT Article DE derivative-free optimization; benchmarking; performance evaluation; deterministic simulations; computational budget ID PARALLEL PATTERN SEARCH AB We propose data profiles as a tool for analyzing the performance of derivative-free optimization solvers when there are constraints on the computational budget. We use performance and data profiles, together with a convergence test that measures the decrease in function value, to analyze the performance of three solvers on sets of smooth, noisy, and piecewise-smooth problems. Our results provide estimates for the performance difference between these solvers, and show that on these problems, the model-based solver tested performs better than the two direct search solvers tested. C1 [More, Jorge J.; Wild, Stefan M.] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. RP More, JJ (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. EM more@mcs.anl.gov; wild@mcs.anl.gov RI Wild, Stefan/P-4907-2016 OI Wild, Stefan/0000-0002-6099-2772 FU Office of Advanced Scientific Computing Research; Office of Science; U.S. Department of Energy [DE-AC02-06CH11357]; DOE Computational Science Graduate Fellowship [DE-FG02-97ER25308] FX This work was supported by the Office of Advanced Scientific Computing Research, Office of Science, U.S. Department of Energy, under Contract DE-AC02-06CH11357.; This work was supported by a DOE Computational Science Graduate Fellowship under grant number DE-FG02-97ER25308. NR 22 TC 114 Z9 115 U1 1 U2 8 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 1052-6234 J9 SIAM J OPTIMIZ JI SIAM J. Optim. PY 2009 VL 20 IS 1 BP 172 EP 191 DI 10.1137/080724083 PG 20 WC Mathematics, Applied SC Mathematics GA 445MU UT WOS:000266055700008 ER PT J AU Lee, B AF Lee, B. TI GUIDANCE FOR CHOOSING MULTIGRID PRECONDITIONERS FOR SYSTEMS OF ELLIPTIC PARTIAL DIFFERENTIAL EQUATIONS SO SIAM JOURNAL ON SCIENTIFIC COMPUTING LA English DT Article DE preconditioner; multigrid method; elliptic partial differential equations ID COEFFICIENTS AB This paper presents some guidance for choosing multigrid preconditioners for systems of partial differential equations (PDEs). Rather than developing a black-box algorithm for arbitrary systems of PDEs, the strategy in this paper is to classify systems with multigrid preconditioners. From this classification, a new preconditioner is developed, and it is shown to be suitable for a particular class of strongly cross-coupled systems, solving the whole cross-coupled system almost as effectively as solving just the diagonal system. Also, this paper gives an explanation of why block diagonal preconditioners are somewhat effective for certain strongly cross-coupled systems that at first glance appear to be intractable for multigrid preconditioning. C1 Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA 94550 USA. RP Lee, B (reprint author), Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA 94550 USA. EM lee123@llnl.gov FU U.S. Department of Energy by Lawrence Livermore National Laboratory [W-7405-Eng-48] FX Received by the editors September 24, 2007; accepted for publication ( in revised form) January 12, 2009; published electronically July 3, 2009. This work was supported by the U.S. Department of Energy by Lawrence Livermore National Laboratory under contract W-7405-Eng-48. NR 20 TC 2 Z9 2 U1 0 U2 4 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 1064-8275 J9 SIAM J SCI COMPUT JI SIAM J. Sci. Comput. PY 2009 VL 31 IS 4 BP 2803 EP 2831 DI 10.1137/070703636 PG 29 WC Mathematics, Applied SC Mathematics GA 482BV UT WOS:000268859500018 ER PT J AU Appelo, D Hagstrom, T AF Appeloe, Daniel Hagstrom, Thomas TI A GENERAL PERFECTLY MATCHED LAYER MODEL FOR HYPERBOLIC-PARABOLIC SYSTEMS SO SIAM JOURNAL ON SCIENTIFIC COMPUTING LA English DT Article DE perfectly matched layers; hyperbolic-parabolic systems ID RADIATION BOUNDARY-CONDITIONS; LINEARIZED EULER EQUATIONS; UNBOUNDED-DOMAINS; ABSORBING LAYERS; WAVES; STABILITY; FLOW AB This paper describes a very general absorbing layer model for hyperbolic-parabolic systems of partial differential equations. For linear systems with constant coefficients it is shown that the model possesses the perfect matching property, i.e., it is a perfectly matched layer (PML). The model is applied to two linear systems: a linear wave equation with a viscous damping term and the linearized Navier-Stokes equations. The resulting perfectly matched layer for the viscous wave equation is proved to be stable. The paper also presents how the model can be used to construct an absorbing layer for the full compressible Navier-Stokes equations. For all three applications, numerical experiments are presented. Especially for the linear problems, the results are very promising. In one experiment, where the performance of a "hyperbolic PML" and the new hyperbolic-parabolic PML is compared for a hyperbolic-parabolic system, an improvement of six orders of magnitude is observed. For the compressible Navier-Stokes equations results obtained with the presented layer are competitive with existing methods. C1 [Appeloe, Daniel] Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA 94551 USA. [Hagstrom, Thomas] So Methodist Univ, Dept Math, Dallas, TX 75275 USA. RP Appelo, D (reprint author), CALTECH, Pasadena, CA 91125 USA. EM appelo@caltech.edu; thagstrom@smu.edu FU U.S. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344] FX This work performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. NR 33 TC 2 Z9 2 U1 0 U2 3 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 1064-8275 J9 SIAM J SCI COMPUT JI SIAM J. Sci. Comput. PY 2009 VL 31 IS 5 BP 3301 EP 3323 DI 10.1137/080713951 PG 23 WC Mathematics, Applied SC Mathematics GA 519EH UT WOS:000271747300004 ER PT S AU Chen, Y Huang, XR Dhanaraj, G Dudley, M Sanchez, EK MacMillan, MF AF Chen, Yi Huang, XianRong Dhanaraj, Govindhan Dudley, Michael Sanchez, Edward K. MacMillan, Michael F. BE Suzuki, A Okumura, H Kimoto, T Fuyuki, T Fukuda, K Nishizawa, S TI Sense Determination of c-axis Screw Dislocations in 4H-SiC SO SILICON CARBIDE AND RELATED MATERIALS 2007, PTS 1 AND 2 SE Materials Science Forum LA English DT Proceedings Paper CT 12th International Conference on Silicon Carbide and Related Materials CY OCT 14-19, 2007 CL Otsu, JAPAN SP Japan Soc Appl Phys, Assoc Promot Elect, Elect & Informat Engn, Ceram Soc Japan, IEEE EDS, Kansai Chapter, IEEJ, Inst Elect, Informat & Commun Engineers, Japanese Assoc Crystal Growth, Surface Sci Soc Japan, Vacuum Soc Japan DE threading screw dislocations; dislocation sense; x-ray topography ID X-RAY TOPOGRAPHY; DIFFRACTION; DEFECTS AB Grazing-incidence synchrotron topography studies of micropipes (MPs) and closed-core threading screw dislocations (TSDs) have been carried out and the results compared with ray-tracing simulations. Simulations indicate that both MPs and TSDs appear as roughly elliptically shaped white features which are canted to one side or the other of the g-vector depending on the dislocation sense and which have asymmetric perimeters of dark contrast which are greatly enhanced on the side towards which the feature is canted (again depending on the dislocation sense). For MPs, observations are generally consistent with this although the cant of the features is more obviously discerned than the asymmetry in the perimeter contrast. Sense assignment for MPs has been validated using back-reflection reticulography. For TSDs, observation are again generally consistent with the simulations although the smaller feature size and the variability in the line direction of the TSDs make the asymmetry of perimeter contrast a more obvious and reliable way to determine the dislocation sense than the sense of cant. TSD dislocation senses so obtained were validated using back-reflection images of same-sign and opposite-sign pairs. C1 [Chen, Yi; Dhanaraj, Govindhan; Dudley, Michael] SUNY Stony Brook, Dept Mat Sci & Engn, Stony Brook, NY 11794 USA. [Huang, XianRong] Argonne Natl Lab, Adv Photon Source, Argonne, IL USA. [Sanchez, Edward K.; MacMillan, Michael F.] Dow Corn Corp, Auburn, MI 48611 USA. RP Chen, Y (reprint author), SUNY Stony Brook, Dept Mat Sci & Engn, Stony Brook, NY 11794 USA. EM yichen1@ic.sunysb.edu; xrhuang@aps.anl.gov; gdhanaraj@ms.cc.sunysb.edu; mdudley@notes.cc.sunysb.edu; edward.sanchez@dowcorning.com; mike.macmillan@dowcorning.com FU ONR [N0001140010348, N000140110302, N000140211014]; Dow Corning Corporation [N0001405C0324, DAAD1701C008]; Beamline [X-19C]; NSLS [DE-AC02-76CH00016]; APS at ANL [W-31-109-ENG-38]; [XOR-33BM] FX This work is supported in part by ONR grants N0001140010348, N000140110302 and N000140211014 (contract monitor Dr. Colin Wood) and by Dow Corning Corporation under contract numbers N0001405C0324 and DAAD1701C0081. Topography experiments were carried out at Beamline X-19C, at the NSLS (Contract no. DE-AC02-76CH00016) and Beamline XOR-33BM, APS at ANL (Contract No. W-31-109-ENG-38). NR 11 TC 6 Z9 6 U1 1 U2 1 PU TRANS TECH PUBLICATIONS LTD PI DURNTEN-ZURICH PA KREUZSTRASSE 10, 8635 DURNTEN-ZURICH, SWITZERLAND SN 0255-5476 J9 MATER SCI FORUM PY 2009 VL 600-603 BP 297 EP + PN 1-2 PG 2 WC Materials Science, Ceramics; Materials Science, Multidisciplinary SC Materials Science GA BIX26 UT WOS:000263555300069 ER PT S AU Chen, Y Zhang, N Huang, XR Black, DR Dudley, M AF Chen, Yi Zhang, Ning Huang, XianRong Black, David R. Dudley, Michael BE Suzuki, A Okumura, H Kimoto, T Fuyuki, T Fukuda, K Nishizawa, S TI Studies of the Distribution of Elementary Threading Screw Dislocations In 4H Silicon Carbide Wafer SO SILICON CARBIDE AND RELATED MATERIALS 2007, PTS 1 AND 2 SE Materials Science Forum LA English DT Proceedings Paper CT 12th International Conference on Silicon Carbide and Related Materials CY OCT 14-19, 2007 CL Otsu, JAPAN SP Japan Soc Appl Phys, Assoc Promot Elect, Elect & Informat Engn, Ceram Soc Japan, IEEE EDS, Kansai Chapter, IEEJ, Inst Elect, Informat & Commun Engineers, Japanese Assoc Crystal Growth, Surface Sci Soc Japan, Vacuum Soc Japan DE threading screw dislocation; dislocation sense; sense distribution AB The density and sense distribution of elementary threading screw dislocations in a physical vapor transport grown 3-inch 4H silicon carbide wafer have been studied. The density of TSDs ranges between 1.6x10(3)/cm(2) and 7.1x103/cm(2) and the lowest density is observed at positions approximately half radius off the wafer center, The dislocation sense of elementary threading screw dislocations can be readily revealed by the asymmetric contrast of their images in grazing-incidence x-ray topographs using pyramidal plane reflections. The circumferential and radial distributions of the sense of elementary threading screw dislocations have been studied and no clear trends are observed in either distribution. C1 [Chen, Yi; Zhang, Ning; Dudley, Michael] SUNY Stony Brook, Dept Mat Sci & Engn, Stony Brook, NY 11794 USA. [Huang, XianRong] Argonne Natl Lab, Adv Photon Source, Argonne 60349, IL USA. [Black, David R.] Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA. RP Chen, Y (reprint author), SUNY Stony Brook, Dept Mat Sci & Engn, Stony Brook, NY 11794 USA. EM yichen1@ic.sunysb.edu; nizhang@ic.sunysb.edu; xrhuang@aps.anl.gov; david.black@nist.gov; mdudley@notes.cc.sunysb.edu FU ONR [N0001140010348, N000140110302, N000140211014]; Dow Corning Corporation [N0001405C0324, DAAD1701C0081]; Beamline [X-19C]; NSLS [DE-AC02-76CH00016]; APS at ANL [W-31-109-ENG-38]; [XOR-33BM] FX This work is supported in part by ONR grants N0001140010348, N000140110302 and N000140211014 (contract monitor Dr. Colin Wood) and by Dow Corning Corporation under contract numbers N0001405C0324 and DAAD1701C0081. Topography experiments were carried out at Beamline X-19C, at the NSLS (Contract no. DE-AC02-76CH00016) and Beamline XOR-33BM, APS at ANL (Contract No. W-31-109-ENG-38 . NR 13 TC 7 Z9 8 U1 0 U2 1 PU TRANS TECH PUBLICATIONS LTD PI DURNTEN-ZURICH PA KREUZSTRASSE 10, 8635 DURNTEN-ZURICH, SWITZERLAND SN 0255-5476 J9 MATER SCI FORUM PY 2009 VL 600-603 BP 301 EP + PN 1-2 PG 2 WC Materials Science, Ceramics; Materials Science, Multidisciplinary SC Materials Science GA BIX26 UT WOS:000263555300070 ER PT S AU Chen, Y Huang, X Zhang, N Dudley, M Caldwell, JD Liu, KX Stahlbush, RE AF Chen, Yi Huang, XianRong Zhang, Ning Dudley, Michael Caldwell, Joshua D. Liu, Kendrick X. Stahlbush, Robert E. BE Suzuki, A Okumura, H Kimoto, T Fuyuki, T Fukuda, K Nishizawa, S TI Synchrotron X-ray Topographic Studies of Recombination Activated Shockley Partial Dislocations in 4H-Silicon Carbide Epitaxial Layers SO SILICON CARBIDE AND RELATED MATERIALS 2007, PTS 1 AND 2 SE Materials Science Forum LA English DT Proceedings Paper CT 12th International Conference on Silicon Carbide and Related Materials CY OCT 14-19, 2007 CL Otsu, JAPAN SP Japan Soc Appl Phys, Assoc Promot Elect, Elect & Informat Engn, Ceram Soc Japan, IEEE EDS, Kansai Chapter, IEEJ, Inst Elect, Informat & Commun Engineers, Japanese Assoc Crystal Growth, Surface Sci Soc Japan, Vacuum Soc Japan DE recombination enhanced dislocation glide; Shockley partial dislocation; stacking fault; x-ray topography AB Electron-hole recombination activated Shockley partial dislocations bounding expanding stacking faults and their interactions with threading dislocations have been studied in 4H-SiC epitaxial layers using synchrotron x-ray topography. The bounding partials appear as white stripes or narrow dark lines in back-reflection X-ray topographs recorded using the basal plane reflections. Such contrast variations are attributable to the defocusing/focusing of the diffracted X-rays due to the edge component of the partial dislocations, which creates a convex/concave distortion of the basal planes. Simulation results based on the ray-tracing principle confirm our argument. The sign of the partial dislocations can be subsequently determined. C1 [Chen, Yi; Zhang, Ning; Dudley, Michael] SUNY Stony Brook, Dept Mat Sci & Engn, Stony Brook, NY 11794 USA. [Huang, XianRong] Naval Res Lab, Washington, DC 20375 USA. [Caldwell, Joshua D.; Liu, Kendrick X.; Stahlbush, Robert E.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Chen, Y (reprint author), SUNY Stony Brook, Dept Mat Sci & Engn, Stony Brook, NY 11794 USA. EM yichen1@ic.sunysb.edu; xrhuang@aps.anl.gov; nizhang@ic.sunysb.edu; mdudley@notes.cc.sunysb.edu; jcaldwell@ccs.nrl.navy.mil; kendrick.liu@nrl.navy.mil; stahlbush@nrl.navy.mil RI Caldwell, Joshua/B-3253-2008 OI Caldwell, Joshua/0000-0003-0374-2168 FU ONR [N0001140010348, N000140110302, N000140211014]; Dow Corning Corporation [N0001405C0324, DAAD1701C0081]; NSLS [DE-AC02-76CH00016]; Beamline [XOR-33BM]; APS [W-31-109-ENG-38] FX This work is supported in part by ONR grants N0001140010348, N000140110302 and N000140211014 (contract monitor Dr. Colin Wood) and by Dow Corning Corporation under contract numbers N0001405C0324 and DAAD1701C0081. Topography experiments were carried out at the Stony Brook Synchrotron Topography Facility (Beamline X-19C) at the NSLS (Contract no. DE-AC02-76CH00016) and Beamline XOR-33BM, APS (Contract No. W-31-109-ENG-38). NR 9 TC 1 Z9 1 U1 0 U2 2 PU TRANS TECH PUBLICATIONS LTD PI DURNTEN-ZURICH PA KREUZSTRASSE 10, 8635 DURNTEN-ZURICH, SWITZERLAND SN 0255-5476 J9 MATER SCI FORUM PY 2009 VL 600-603 BP 357 EP + PN 1-2 PG 2 WC Materials Science, Ceramics; Materials Science, Multidisciplinary SC Materials Science GA BIX26 UT WOS:000263555300084 ER PT S AU Chinthavali, M Ozpineci, B Tolbert, LM Zhang, H AF Chinthavali, Madhu Ozpineci, Burak Tolbert, Leon M. Zhang, Hui BE Suzuki, A Okumura, H Kimoto, T Fuyuki, T Fukuda, K Nishizawa, S TI Summary of SiC Research for Transportation Applications at ORNL SO SILICON CARBIDE AND RELATED MATERIALS 2007, PTS 1 AND 2 SE Materials Science Forum LA English DT Proceedings Paper CT 12th International Conference on Silicon Carbide and Related Materials CY OCT 14-19, 2007 CL Otsu, JAPAN SP Japan Soc Appl Phys, Assoc Promot Elect, Elect & Informat Engn, Ceram Soc Japan, IEEE EDS, Kansai Chapter, IEEJ, Inst Elect, Informat & Commun Engineers, Japanese Assoc Crystal Growth, Surface Sci Soc Japan, Vacuum Soc Japan DE SiC; high temperature; transportation applications AB The theoretical advantages that Silicon Carbide (SiC) material offers are being realized by using prototype or experimental devices in many different applications ranging from medium voltage to high voltage. The main advantages of using SiC based devices are reduced thermal management requirements and smaller passive components which result in higher power density. An overview of the SiC research effort for transportation applications at Oak Ridge National Laboratory (ORNL) is presented in this paper. C1 [Chinthavali, Madhu; Ozpineci, Burak] Oak Ridge Natl Lab, Knoxville, TN 37932 USA. [Tolbert, Leon M.; Zhang, Hui] Univ Tennessee, Knoxville, TN 37996 USA. RP Chinthavali, M (reprint author), Oak Ridge Natl Lab, Knoxville, TN 37932 USA. EM chinthavalim@ornl.gov; burak@ieee.org; tolbert@utk.edu; hzhang5@utk.edu OI Tolbert, Leon/0000-0002-7285-609X FU U.S. Department of Energy [DE-AC05-00OR22725]; U.S. Government [DE-AC05-00OR22725] FX Prepared by the Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, managed by UT-Battelle for the U.S. Department of Energy under contract DE-AC05-00OR22725.; The submitted manuscript has been authored by a contractor of the U.S. Government under Contract No. DE-AC05-00OR22725. Accordingly, the U.S. Government retains a non-exclusive, royalty-free license to publish from the contribution, or allow others to do so, for U.S. Government purposes. NR 4 TC 2 Z9 2 U1 0 U2 2 PU TRANS TECH PUBLICATIONS LTD PI DURNTEN-ZURICH PA KREUZSTRASSE 10, 8635 DURNTEN-ZURICH, SWITZERLAND SN 0255-5476 J9 MATER SCI FORUM PY 2009 VL 600-603 BP 1239 EP + PN 1-2 PG 2 WC Materials Science, Ceramics; Materials Science, Multidisciplinary SC Materials Science GA BIX26 UT WOS:000263555300298 ER PT J AU Dal Negro, L Li, R Warga, J Yerci, S Basu, SN Hamel, S Galli, G AF Dal Negro, Luca Li, Rui Warga, Joseph Yerci, Selcuk Basu, Soumendra N. Hamel, Sebastien Galli, Giulia BE Khriachtchev, L TI LIGHT EMISSION FROM SILICON-RICH NITRIDE NANOSTRUCTURES SO SILICON NANOPHOTONICS: BASIC PRINCIPLES, PRESENT STATUS AND PERSPECTIVES LA English DT Article; Book Chapter ID SI NANOCRYSTALS; STIMULATED-EMISSION; QUANTUM CONFINEMENT; OPTICAL-PROPERTIES; ENERGY-TRANSFER; H FILMS; SIO2-FILMS; MECHANISM; DYNAMICS; GAIN AB In this chapter, we discuss our main results on the fabrication, optical characterization and theoretical modeling of silicon nanocrystals (Si-nc) embedded in silicon-rich nitride (SRN) matrices by direct magnetron co-sputtering. In particular, we study the structural and optical emission properties of Si-nc dispersed in matrices of varying stoichiometry and annealed at different temperatures, and we discuss their implications with respect to the nature of light emission in co-sputtered SRN films. In addition, we discuss Erbium emission and energy sensitization in Si-nc films embedded in SRN matrices. Combining high-resolution transmission electron microscopy with absorption and emission spectroscopy we demonstrate efficient room-temperature light emission from dense arrays of Si-nc with 2nm average diameter. These Si-nc systems show weakly tunable, near-infrared emission spectra with large absorption/emission Stokes shifts and multi-component, nanosecond recombination dynamics. Our results are interpreted using first-principles simulations and indicate that nitrogen atoms bonded to the surface of nanometer-size silicon clusters play a crucial role in the emission mechanism of small Si-nc in SRN systems. These findings suggest that Si-nc embedded in SRN matrices have a large potential for the fabrication of optically active photonic devices based on Si technology. C1 [Dal Negro, Luca; Li, Rui; Warga, Joseph; Yerci, Selcuk] Boston Univ, Dept Elect & Comp Engn, Boston, MA 02215 USA. [Basu, Soumendra N.] Boston Univ, Dept Mfg Engn, Brookline, MA 02446 USA. [Hamel, Sebastien] Lawrence Livermore Natl Lab, Livermore, CA USA. [Galli, Giulia] Univ Calif Davis, Dept Chem, Davis, CA 95616 USA. RP Dal Negro, L (reprint author), Boston Univ, Dept Elect & Comp Engn, 8 St Marys St, Boston, MA 02215 USA. EM dalnegro@bu.edu NR 52 TC 7 Z9 7 U1 0 U2 0 PU PAN STANFORD PUBLISHING PTE LTD PI SINGAPORE PA PENTHOUSE LEVEL, SUNTEC TOWER 3, 8 TEMASEK BLVD, SINGAPORE, 038988, SINGAPORE BN 978-9-81424-113-7 PY 2009 BP 327 EP 356 PG 30 WC Nanoscience & Nanotechnology; Optics; Physics, Applied; Physics, Condensed Matter SC Science & Technology - Other Topics; Optics; Physics GA BUF04 UT WOS:000289066900013 ER PT S AU Chernyakova, M Uchiyama, Y Takahashi, T Aharonian, F Neronov, A AF Chernyakova, Maria Uchiyama, Yasunobu Takahashi, Tadayuki Aharonian, Felix Neronov, Andrii BE Ferrando, P Rodriguez, J TI X-ray Observations of PSR B1259-63 2007 Periastron Passage SO SIMBOL-X: FOCUSING ON THE HARD X-RAY UNIVERSE SE AIP Conference Proceedings LA English DT Proceedings Paper CT 2nd International Simbol-X Symposium CY DEC 02-05, 2008 CL Paris, FRANCE SP CNES, ASI, CEA, CNRS, Univ Paris, GDR-PCHE, IN2P3, CESR DE pulsars : individual: PSR B1259-63; X-rays: binaries; X-rays: individual: PSR B1259-63 ID PULSAR; STAR; PSR-B1259-63; EMISSION; SYSTEM AB PSR B1259-63 is a 48 ms radio pulsar in a highly eccentric 3.4 year orbit with a Be star SS 2883. Unpulsed gamma-ray, X-ray and radio emission is observed from the binary system and the collision of the pulsar wind with the anisotropic wind of the Be star plays a crucial role in the generation of the observed emission. The 2007 periastron passage was observed in unprecedented details with Suzaku, Swift, XMM-Newton and Chandra missions. We present here the results of this campaign, compare them with previous observations and discuss the physical implications. C1 [Chernyakova, Maria; Aharonian, Felix] DIAS, Fitzwilliam Pl 31, Dublin 2, Ireland. [Uchiyama, Yasunobu] SLAC, Menlo Pk, CA 94025 USA. [Takahashi, Tadayuki] ISAS JAXA, Sagamihara, Kanagawa 2298510, Japan. [Aharonian, Felix] MPIK, D-69029 Heidelberg, Germany. [Neronov, Andrii] ISDC, CH-1290 Versoix, Switzerland. RP Chernyakova, M (reprint author), DIAS, Fitzwilliam Pl 31, Dublin 2, Ireland. NR 13 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0662-9 J9 AIP CONF PROC PY 2009 VL 1126 BP 271 EP + PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BJM09 UT WOS:000266785900066 ER PT S AU Wells, NP Lessard, GA Phipps, ME Goodwin, PM Lidke, DS Wilson, BS Werner, JH AF Wells, Nathan P. Lessard, Guillaume A. Phipps, Mary E. Goodwin, Peter M. Lidke, Diane S. Wilson, Bridget S. Werner, James H. BE Enderlein, J Gryczynski, ZK Erdmann, R TI Going beyond 2D: Following membrane diffusion and topography in the IgE-Fc[Epsilon]RI system using 3-dimensional tracking microscopy SO SINGLE MOLECULE SPECTROSCOPY AND IMAGING II SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Single Molecule Spectroscopy and Imaging II CY JAN 24-25, 2009 CL San Jose, CA SP SPIE, PicoQuant GmBH Berlin DE Microscopy; Particle Tracking; Fluorescence; Quantum Dot; Membrane Signaling; Live Cell; RBL-2H3; IgE ID FC-EPSILON-RI; FLUORESCENCE CORRELATION SPECTROSCOPY; SINGLE-PARTICLE TRACKING; LIVING CELLS; LATERAL DIFFUSION; MOLECULE TRACKING; PROTEIN DYNAMICS; PLASMA-MEMBRANE; HOP DIFFUSION; IGE-RECEPTORS AB The ability to follow and observe single molecules as they function in live cells represents a major milestone for molecular-cellular biology. Here we present a tracking microscope that is able to track quantum dots in three dimensions and simultaneously record time-resolved emission statistics from a single dot. This innovative microscopy approach is based on four spatial filters and closed loop feedback to constantly keep a single quantum dot in the focal spot. Using this microscope, we demonstrate the ability to follow quantum dot labeled IgE antibodies bound to Fc epsilon RI membrane receptors in live RBL-2H3 cells. The results are consistent with prior studies of two dimensional membrane diffusion (Andrews et al., Nat. Cell Biol., 10, 955, 2008). In addition, the microscope captures motion in the axial (Z) direction, which permits tracking of diffusing receptors relative to the "hills and valleys" of the dynamically changing membrane landscape. This approach is uniquely capable of following single molecule dynamics on live cells with three dimensional spatial resolution. C1 [Wells, Nathan P.; Lessard, Guillaume A.; Phipps, Mary E.; Goodwin, Peter M.; Werner, James H.] Los Alamos Natl Lab, MPA CINT, Los Alamos, NM 87545 USA. RP Werner, JH (reprint author), Los Alamos Natl Lab, MPA CINT, POB 1663, Los Alamos, NM 87545 USA. EM jwerner@lanl.gov OI Werner, James/0000-0002-7616-8913 FU NIGMS NIH HHS [P50 GM085273] NR 44 TC 4 Z9 4 U1 0 U2 5 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-7431-5 J9 PROC SPIE PY 2009 VL 7185 AR 71850Z DI 10.1117/12.809412 PG 13 WC Optics; Imaging Science & Photographic Technology; Radiology, Nuclear Medicine & Medical Imaging; Spectroscopy SC Optics; Imaging Science & Photographic Technology; Radiology, Nuclear Medicine & Medical Imaging; Spectroscopy GA BSS58 UT WOS:000285712600020 PM 25520545 ER PT B AU Dubey, A Piccoli, L Kowalkowski, JB Simone, JN Sun, XH Karsai, G Neema, S AF Dubey, Abhishek Piccoli, Luciano Kowalkowski, James B. Simone, James N. Sun, Xian-He Karsai, Gabor Neema, Sandeep BE Sterritt, R TI Using Runtime Verification to Design a Reliable Execution Framework for Scientific Workflows SO SIXTH IEEE INTERNATIONAL CONFERENCE AND WORKSHOP ON THE ENGINEERING OF AUTONOMIC AND AUTONOMOUS SYSTEMS: EASE 2009 LA English DT Proceedings Paper CT 6th IEEE International Workshop on Engineering of Autonomic and Autonomous Systems CY APR 14-16, 2009 CL San Francisco, CA SP IEEE Comp Soc, TC Engn Autonomous & Autonom Syst, IEEE Comp Soc, TC Engn Comput Based Syst AB In this paper, we describe the design of a scientific workflow execution framework that integrates run-time verification to monitor its execution and checking it against the formal specifications. For controlling workflow execution, this framework provides for data provenance, execution tracking and online monitoring of each work:flow task, also referred to as participants. The sequence of participants is described in an abstract parameterized view, which is used to generate concrete data dependency based sequence of participants with defined arguments. As participants belonging to a workflow arc, mapped onto machines and executed, periodic and on-demand monitoring of vital health parameters on allocated nodes is enabled according to prespecified invariant conditions with actions to be taken upon violation of invariants. C1 [Dubey, Abhishek; Karsai, Gabor; Neema, Sandeep] Vanderbilt Univ, Inst Software Integrated Syst, Nashville, TN 37235 USA. [Simone, James N.; Sun, Xian-He] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. [Piccoli, Luciano; Sun, Xian-He] IIT, Chicago, IL 60616 USA. RP Dubey, A (reprint author), Vanderbilt Univ, Inst Software Integrated Syst, Nashville, TN 37235 USA. FU Fermi National Accelerator Laboratory; Fermi Research Alliance; LLC [DE-AC02-07CH11359]; United States Department of Energy (DoE); DoE SciDAC [DOE DE-FC02- 06 ER41442] FX This work was supported in part by Fermi National Accelerator Laboratory, operated by Fermi Research Alliance, LLC under contract No. DE-AC02-07CH11359 with the United States Department of Energy (DoE), and by DoE SciDAC program under the contract No. DOE DE-FC02- 06 ER41442. NR 15 TC 0 Z9 0 U1 0 U2 1 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 USA BN 978-0-7695-3623-1 PY 2009 BP 87 EP + DI 10.1109/EASe.2009.13 PG 2 WC Automation & Control Systems; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA BJN59 UT WOS:000266868100009 ER PT S AU Mills, GB AF Mills, Geoffrey B. BE Sanchez, F Sorel, M AlvarezRuso, L Cervera, A VicenteVacas, M TI Neutrino Physics at OscSNS SO SIXTH INTERNATIONAL WORKSHOP ON NEUTRINO-NUCLEUS INTERACTIONS IN THE FEW-GEV REGION SE AIP Conference Proceedings LA English DT Proceedings Paper CT 6th International Workshop on Neutrino-Nucleus Interactions in the Few-GeV Region CY MAY 18-22, 2009 CL Sitges, SPAIN SP Ben asque Ctr Sci, Consolider, Ingenio 2010 Programme CSPAN, Fermilag, IFAE, IFIC DE Neutrino; SNS; LSND; MiniBooNE ID DETECTOR AB The SNS will be one of the the most prolific sources of neutrinos in the world in the next few years. It will enable experiments to make significant advances in neutrino science. The SNS will have significant advantages over the old standard, the LAMPF at Los Alamos, owing to the time-compressed beam pulse relative to LAMPF. The 500 ns long pulse will be over 1000 times shorter than the old LAMPF beam pulse of 700 mu s. This article describes some of the possibilities for measurements in neutrino physics made possible by the SNS facility. C1 Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87544 USA. RP Mills, GB (reprint author), Los Alamos Natl Lab, Div Phys, POB 1663, Los Alamos, NM 87544 USA. NR 6 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0725-1 J9 AIP CONF PROC PY 2009 VL 1189 BP 94 EP 96 DI 10.1063/1.3274195 PG 3 WC Physics, Nuclear SC Physics GA BQP12 UT WOS:000281464900012 ER PT S AU Owens, JF Christy, E Melnitchouk, W Monaghan, P Accardi, A Keppel, CE Morfin, JG AF Owens, J. F. Christy, E. Melnitchouk, W. Monaghan, P. Accardi, A. Keppel, C. E. Morfin, J. G. BE Sanchez, F Sorel, M AlvarezRuso, L Cervera, A VicenteVacas, M TI Global Fits for PDFs at Large-x SO SIXTH INTERNATIONAL WORKSHOP ON NEUTRINO-NUCLEUS INTERACTIONS IN THE FEW-GEV REGION SE AIP Conference Proceedings LA English DT Proceedings Paper CT 6th International Workshop on Neutrino-Nucleus Interactions in the Few-GeV Region CY MAY 18-22, 2009 CL Sitges, SPAIN SP Benasque Ctr Sci, Consolider, Ingenio 2010 Programme C-SPAN, Fermilab, IFAE, IFIC DE Global fits; parton distribution functions ID NUCLEAR-STRUCTURE FUNCTIONS; DEUTERON AB A project to perform global fits for parton distribution functions (PDFs) with an emphasis on the large-x region is described. An overview of the aims of the project, the techniques used, and some preliminary results are all discussed. C1 [Owens, J. F.] Florida State Univ, Tallahassee, FL 32306 USA. [Monaghan, P.; Keppel, C. E.] Thomas Jefferson Natl Accelerator lab, Newport News 23606, VA USA. [Keppel, C. E.] Hampton Univ, Hampton, VA USA. [Morfin, J. G.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Owens, JF (reprint author), Florida State Univ, Tallahassee, FL 32306 USA. NR 13 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0725-1 J9 AIP CONF PROC PY 2009 VL 1189 BP 263 EP + DI 10.1063/1.3274168 PG 2 WC Physics, Nuclear SC Physics GA BQP12 UT WOS:000281464900038 ER PT S AU Alvarez-Ruso, L Benhar, O Tayloe, R Zeller, GP AF Alvarez-Ruso, L. Benhar, O. Tayloe, R. Zeller, G. P. BE Sanchez, F Sorel, M AlvarezRuso, L Cervera, A VicenteVacas, M TI The Path Forward: Neutrino Quasi-Elastic Scattering Discussion SO SIXTH INTERNATIONAL WORKSHOP ON NEUTRINO-NUCLEUS INTERACTIONS IN THE FEW-GEV REGION SE AIP Conference Proceedings LA English DT Proceedings Paper CT 6th International Workshop on Neutrino-Nucleus Interactions in the Few-GeV Region CY MAY 18-22, 2009 CL Sitges, SPAIN SP Benasque Ctr Sci, Consolider, Ingenio 2010 Programme C-SPAN, Fermilab, IFAE, IFIC DE Neutrino interactions ID NUCLEON AB This summary of "the path forward" session of the NuInt09 workshop focuses on neutrino quasi-elastic (QE) scattering, both from an experimental and theoretical standpoint. How well do we truly understand neutrino QE scattering on nuclear targets? In this work, several experts in the field summarize their views, as presented as part of the concluding session of the workshop. C1 [Alvarez-Ruso, L.] Univ Coimbra, Dept Fis, Ctr Fis Computac, P-3000 Coimbra, Portugal. [Benhar, O.] Univ Roma La Sapienza, INFN, Dipartimento Fis, Rome, Italy. [Tayloe, R.] Indiana Univ, Bloomington, IN USA. [Zeller, G. P.] Los Alamos Natl Lab, Los Alamos, NM USA. RP Alvarez-Ruso, L (reprint author), Univ Coimbra, Dept Fis, Ctr Fis Computac, P-3000 Coimbra, Portugal. RI Benhar, Omar/J-6044-2012 OI Benhar, Omar/0000-0001-6818-9215 NR 19 TC 2 Z9 2 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0725-1 J9 AIP CONF PROC PY 2009 VL 1189 BP 291 EP + DI 10.1063/1.3274172 PG 3 WC Physics, Nuclear SC Physics GA BQP12 UT WOS:000281464900042 ER PT S AU Morfin, JG Nieves, J Paschos, EA Wascko, MO Zeller, GP AF Morfin, J. G. Nieves, J. Paschos, E. A. Wascko, M. O. Zeller, G. P. BE Sanchez, F Sorel, M AlvarezRuso, L Cervera, A VicenteVacas, M TI The Path Forward: Neutrino-Induced Coherent Pion Production Discussion SO SIXTH INTERNATIONAL WORKSHOP ON NEUTRINO-NUCLEUS INTERACTIONS IN THE FEW-GEV REGION SE AIP Conference Proceedings LA English DT Proceedings Paper CT 6th International Workshop on Neutrino-Nucleus Interactions in the Few-GeV Region CY MAY 18-22, 2009 CL Sitges, SPAIN SP Benasque Ctr Sci, Consolider, Ingenio 2010 Programme C-SPAN, Fermilab, IFAE, IFIC DE Neutrino interactions ID PI(0) PRODUCTION; K2K AB This summary of "the path forward" session of the NuInt09 workshop focuses on neutrino-induced coherent pion production. The main question raised as part of this discussion was whether or not we adequately understand neutral current (NC) and charged current (CC) coherent pion production at low and intermediate neutrino energies. In this work, several experts in the field summarize their views, as presented at the workshop. C1 [Morfin, J. G.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Morfin, JG (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. RI Nieves, Juan/K-2115-2014 OI Nieves, Juan/0000-0002-2518-4606 NR 46 TC 3 Z9 3 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0725-1 J9 AIP CONF PROC PY 2009 VL 1189 BP 297 EP 304 PG 8 WC Physics, Nuclear SC Physics GA BQP12 UT WOS:000281464900043 ER PT S AU Andreopoulos, C Gallagher, H Hayato, Y Sobczyk, JT Walter, C Zeller, S AF Andreopoulos, Costas Gallagher, Hugh Hayato, Yoshinari Sobczyk, Jan T. Walter, Chris Zeller, Sam BE Sanchez, F Sorel, M AlvarezRuso, L Cervera, A VicenteVacas, M TI The path forward: Monte Carlo Convergence discussion SO SIXTH INTERNATIONAL WORKSHOP ON NEUTRINO-NUCLEUS INTERACTIONS IN THE FEW-GEV REGION SE AIP Conference Proceedings LA English DT Proceedings Paper CT 6th International Workshop on Neutrino-Nucleus Interactions in the Few-GeV Region CY MAY 18-22, 2009 CL Sitges, SPAIN SP Benasque Ctr Sci, Consolider, Ingenio 2010 Programme C-SPAN, Fermilab, IFAE, IFIC DE Neutrino Interactions; Event Generators; Monte Carlo Simulations AB This is a summary of "the path forward" discussion session of the NuInt09 workshop which focused on Monte Carlo event generators. The main questions raised as part of this discussion are: how to make Monte Carlo generators more reliable and how important it is to work on a universal Monte Carlo generator of events? In this contribution, several experts in the field summarize their views, as presented at the workshop. C1 [Andreopoulos, Costas] Rutherford Appleton Lab, STFC, Didcot OX11 0QX, Oxon, England. [Gallagher, Hugh] Tufts Univ, Medford, MA 02155 USA. [Hayato, Yoshinari] Univ Tokyo, ICRR, Kamioka Observ, Hida City, Gifu 5061205, Japan. [Sobczyk, Jan T.] Univ Wroclaw, Inst Theoret Phys, Wroclaw, Poland. [Walter, Chris] Duke Univ, Dept Phys, Durham, NC 27708 USA. [Zeller, Sam] Los Alamos Natl Lab, Los Alamos, NM USA. RP Andreopoulos, C (reprint author), Rutherford Appleton Lab, STFC, Didcot OX11 0QX, Oxon, England. RI Sobczyk, Jan/C-9761-2016 NR 22 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0725-1 J9 AIP CONF PROC PY 2009 VL 1189 BP 312 EP + DI 10.1063/1.3274175 PG 2 WC Physics, Nuclear SC Physics GA BQP12 UT WOS:000281464900045 ER PT J AU Slowing, II Wu, CW Vivero-Escoto, JL Lin, VSY AF Slowing, Igor I. Wu, Chia-Wen Vivero-Escoto, Juan L. Lin, Victor S. -Y. TI Mesoporous Silica Nanoparticles for Reducing Hemolytic Activity Towards Mammalian Red Blood Cells SO SMALL LA English DT Article DE biocompatibility; drug delivery; hemolysis; red blood cells; silica nanoparticles ID RESPONSIVE CONTROLLED-RELEASE; DELIVERY-SYSTEM; DRUG-DELIVERY; STEM-CELLS; PARTICLES; TOXICITY; MOLECULES; MEMBRANE; MICELLES; BINDING C1 [Slowing, Igor I.; Wu, Chia-Wen; Vivero-Escoto, Juan L.; Lin, Victor S. -Y.] Iowa State Univ, US DOE, Ames Lab, Dept Chem, Ames, IA 50011 USA. RP Lin, VSY (reprint author), Iowa State Univ, US DOE, Ames Lab, Dept Chem, Ames, IA 50011 USA. EM vsylin@iastate.edu RI Wu, Kevin C.-W. /F-8281-2012; Vivero-Escoto, Juan/I-8015-2014; OI Wu, Kevin C.-W./0000-0003-0590-1396; Slowing, Igor/0000-0002-9319-8639 FU U.S. National Science Foundation [CHE-0809521]; U.S. Department of Energy, Office of Basic Energy Sciences [DE-AC02-07CH11358] FX The authors thank the Hybridoma Facility and the Laboratory Animal Resources Office of Iowa State University for providing the blood samples. This work was supported by the U.S. National Science Foundation (CHE-0809521) and by the U.S. Department of Energy, Office of Basic Energy Sciences under Contract No. DE-AC02-07CH11358. NR 30 TC 217 Z9 222 U1 6 U2 70 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 1613-6810 J9 SMALL JI Small PD JAN PY 2009 VL 5 IS 1 BP 57 EP 62 DI 10.1002/smll.200800926 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 400US UT WOS:000262895300007 PM 19051185 ER PT B AU Farinholt, KM Taylor, SG Overly, TG Park, G Farrar, CR AF Farinholt, Kevin M. Taylor, Stuart G. Overly, Timothy G. Park, Gyuhae Farrar, Charles R. GP ASME TI RECENT ADVANCES IN IMPEDANCE-BASED WIRELESS SENSOR NODES SO SMASIS 2008: PROCEEDINGS OF THE ASME CONFERENCE ON SMART MATERIALS, ADAPTIVE STRUCTURES AND INTELLIGENT SYSTEMS - 2008, VOL 2 LA English DT Proceedings Paper CT Conference on Smart Materials, Adaptive Structures and Intelligent Systems CY OCT 28-30, 2008 CL Ellicot, MD SP ASME, Nanotechnol Inst ID IDENTIFICATION; DIAGNOSIS AB This paper presents recent developments in an extremely compact, wireless impedance sensor node for use in structural health monitoring (SHM). The sensor node uses a low-cost integrated circuit that can measure and record the electric impedance of a piezoelectric active-sensor. The sensor node also integrates several components, including a microcontroller for local computing, telemetry for wireless data transmission, multiplexers for managing up to seven piezoelectric transducers per node, energy storage mediums, and several triggering options including a wireless triggering circuit into one package to truly realize a comprehensive, self-contained wireless active-sensor node for SHM applications. It is estimated that this sensor node requires less than 75 mW of total power to operate measurement, computation and data transmission. In addition, the sensor node can also be used for the active-sensor self-diagnostic process that can monitor the operational condition of piezoelectric transducers used in SHM applications. The performance of this miniaturized and portable device is compared to our previous results and its broader capabilities are demonstrated. C1 [Farinholt, Kevin M.; Taylor, Stuart G.; Overly, Timothy G.; Park, Gyuhae; Farrar, Charles R.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Farinholt, KM (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RI Taylor, Stuart/B-1347-2013 NR 14 TC 0 Z9 0 U1 0 U2 1 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-4332-1 PY 2009 BP 57 EP 65 PG 9 WC Automation & Control Systems; Computer Science, Artificial Intelligence; Engineering, Mechanical; Materials Science, Multidisciplinary; Materials Science, Biomaterials SC Automation & Control Systems; Computer Science; Engineering; Materials Science GA BJE71 UT WOS:000265213800009 ER PT B AU Bement, MT Bewley, TR AF Bement, Matthew T. Bewley, Thomas R. GP ASME TI EXCITATION DESIGN FOR DAMAGE DETECTION USING ITERATIVE ADJOINT-BASED OPTIMIZATION SO SMASIS 2008: PROCEEDINGS OF THE ASME CONFERENCE ON SMART MATERIALS, ADAPTIVE STRUCTURES AND INTELLIGENT SYSTEMS - 2008, VOL 2 LA English DT Proceedings Paper CT Conference on Smart Materials, Adaptive Structures and Intelligent Systems CY OCT 28-30, 2008 CL Ellicot, MD SP ASME, Nanotechnol Inst C1 [Bement, Matthew T.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Bement, MT (reprint author), Los Alamos Natl Lab, POB 1663,MS T001, Los Alamos, NM 87545 USA. EM bement@lanl.gov; bewley@ucsd.edu NR 11 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-4332-1 PY 2009 BP 175 EP 183 PG 9 WC Automation & Control Systems; Computer Science, Artificial Intelligence; Engineering, Mechanical; Materials Science, Multidisciplinary; Materials Science, Biomaterials SC Automation & Control Systems; Computer Science; Engineering; Materials Science GA BJE71 UT WOS:000265213800022 ER PT B AU Adams, PA Hax, JC AF Adams, Philip A. Hax, John C. GP IEEE COMPUTER SOC TI A Case for Database Filesystems SO SMC-IT 2009: THIRD IEEE INTERNATIONAL CONFERENCE ON SPACE MISSION CHALLENGES FOR INFORMATION TECHNOLOGY, PROCEEDINGS LA English DT Proceedings Paper CT 3rd IEEE International Conference on Space Mission Challenges for Information Technology CY JUL 19-23, 2009 CL Pasadena, CA SP IEEE DE High Availability; Database Systems; Data Management; Information Systems; Data Intensive Science; eScience AB Data intensive science is offering new challenges and opportunities for Information Technology and traditional relational databases in particular. Database file systems offer the potential to store Level Zero data and analyze Level 1 and Level 3 data within the same database system. Scientific data is typically composed of both unstructured riles and scalar data. Oracle SecureFiles is a new database rile system feature in Oracle Database 11g that is specifically engineered to deliver high performance and scalability for storing unstructured or rile data inside the Oracle database. SecureFiles presents the best of both the rile system and the database worlds for unstructured content. Data stored inside SecureFiles can be queried or written at performance levels comparable to that of traditional file systems while retaining the advantages of the Oracle database. C1 [Adams, Philip A.] Lawrence Livermore Natl Lab, Natl Ignit Facil, Livermore, CA 94550 USA. [Hax, John C.] Oracle Corp, Denver, CO 80237 USA. RP Adams, PA (reprint author), Lawrence Livermore Natl Lab, Natl Ignit Facil, Livermore, CA 94550 USA. EM adams64@llnl.gov; john.hax@oracle.com FU U.S. Department of Energy; Oracle Corporation FX This work was supported in part by the U.S. Department of Energy and Oracle Corporation. NR 6 TC 0 Z9 0 U1 0 U2 0 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 USA BN 978-0-7695-3637-8 PY 2009 BP 173 EP + DI 10.1109/SMC-IT.2009.28 PG 2 WC Engineering, Aerospace SC Engineering GA BMO51 UT WOS:000273122700022 ER PT B AU Pebay, P Rojas, JM Thompson, DC AF Pebay, Philippe Rojas, J. Maurice Thompson, David C. BE Kai, H Sekigawa, H TI Optimization and NPR-Completeness of Certain Fewnomials SO SNC'09: PROCEEDINGS OF THE 2009 INTERNATIONAL WORKSHOP ON SYMBOLIC-NUMERIC COMPUTATION LA English DT Proceedings Paper CT International Workshop on Symbolic-Numeric Computation CY AUG 03-05, 2009 CL Kyoto, JAPAN SP Univ Tsukuba, ACM SIGSAM, Japan Soc Symbol & Algebra Computat DE optimizing; sparse; BSS model; real; exponential sum; polynomial-time; circuit; approximate; condition number ID RELAXATIONS AB We give a high precision polynomial-time approximation scheme for the supremum of any honest n-variate (n + 2)-nomial with a constant term, allowing real exponents as well as real coefficients. Our complexity bounds count field operations and inequality checks, and are polynomial in n and the logarithm of a certain condition number. For the special case of polynomials (i.e., integer exponents), the log of our condition number is sub-quadratic in the sparse size. The best previous complexity bounds were exponential in the sparse size, even for n fixed. Along the way, we partially extend the theory of A-discriminants to real exponents and exponential sums, and find new and natural NPR-complete problems. C1 [Pebay, Philippe; Thompson, David C.] Sandia Natl Labs, Livermore, CA 94551 USA. RP Pebay, P (reprint author), Sandia Natl Labs, POB 969,MS 9159, Livermore, CA 94551 USA. EM pppebay@sandia.gov; rojas@math.tamu.edu; dcthomp@sandia.gov OI Pebay, Philippe/0000-0002-2311-3775 NR 37 TC 1 Z9 1 U1 0 U2 0 PU ASSOC COMPUTING MACHINERY PI NEW YORK PA 1515 BROADWAY, NEW YORK, NY 10036-9998 USA BN 978-1-60558-664-9 PY 2009 BP 133 EP 141 PG 9 WC Mathematics, Applied SC Mathematics GA BMR80 UT WOS:000273427300020 ER PT B AU Bernard, M Backus, G Glickman, M Gieseler, C Waymire, R AF Bernard, Michael Backus, George Glickman, Matthew Gieseler, Charles Waymire, Russel BE Liu, H Liu, H Salerno, JJ Young, MJ TI Modeling Populations of Interest in Order to Simulate Cultural Response to Influence Activities SO SOCIAL COMPUTING AND BEHAVIORAL MODELING LA English DT Proceedings Paper CT 2nd International Workshop on Social Computing, Behavioral Modeling and Prediction CY MAR 31-APR 01, 2009 CL Phoenix, AZ ID PREDICTION AB This paper describes an effort by Sandia National Laboratories to model and simulate populations of specific countries of interest as well as the population's primary influencers, such as government and military leaders. To accomplish this, high definition cognition models are being coupled with an aggregate model of a population to produce a prototype, dynamic cultural representation of a specific country of interest. The objective is to develop a systems-level, intrinsic security capability that will allow analysts to better assess the potential actions, counteractions, and influence of powerful individuals within a country of interest before, during, and after an US initiated event. C1 [Bernard, Michael; Backus, George; Glickman, Matthew; Gieseler, Charles; Waymire, Russel] Sandia Natl Labs, Albuquerque, NM 87185 USA. EM mlberna@sandia.gov; gabacku@sandia.gov; mrglick@sandia.gov; cjgiese@sandia.gov; rlwaymi@sandia.gov NR 14 TC 1 Z9 1 U1 1 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES BN 978-1-4419-0055-5 PY 2009 BP 42 EP 49 DI 10.1007/978-1-4419-0056-2_7 PG 8 WC Behavioral Sciences; Computer Science, Theory & Methods; Social Issues; Psychology, Social SC Behavioral Sciences; Computer Science; Social Issues; Psychology GA BJF11 UT WOS:000265381400007 ER PT B AU Ehlen, MA Bernard, ML Scholand, AJ AF Ehlen, Mark A. Bernard, Michael L. Scholand, Andrew J. BE Liu, H Liu, H Salerno, JJ Young, MJ TI Cognitive Modeling of Household Economic Behaviors during Extreme Events SO SOCIAL COMPUTING AND BEHAVIORAL MODELING LA English DT Proceedings Paper CT 2nd International Workshop on Social Computing, Behavioral Modeling and Prediction CY MAR 31-APR 01, 2009 CL Phoenix, AZ AB Traditional economic models of household behavior are generally not well suited for modeling the economic impacts of extreme events, due to (1) their assumptions of perfect rationality and perfect information; (2) their omission of important non-market factors on behavior; and (3) their omission of the unusual, scenario-specific conditions that extreme events pose on decision making. To overcome these shortcomings, we developed a cognitive-economic model of household behavior that captures and integrates many of these important psychological, non-market, and extreme-event effects. This model of household behavior was used in prototype simulations of how a pandemic influenza can impact the demand for food in a large metropolitan city. The simulations suggest that the impacts to food demand caused by household stress, fear, hoarding, and observing others doing the same could be far greater than those caused simply by the disease itself. C1 [Ehlen, Mark A.; Bernard, Michael L.; Scholand, Andrew J.] Sandia Natl Labs, Albuquerque, NM 87185 USA. EM maehlen@sandia.gov; mlberna@sandia.gov; ajschol@sandia.gov NR 10 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES BN 978-1-4419-0055-5 PY 2009 BP 76 EP 84 DI 10.1007/978-1-4419-0056-2_11 PG 9 WC Behavioral Sciences; Computer Science, Theory & Methods; Social Issues; Psychology, Social SC Behavioral Sciences; Computer Science; Social Issues; Psychology GA BJF11 UT WOS:000265381400011 ER PT B AU Gintautas, V Hagberg, A Bettencourt, LMA AF Gintautas, Vadas Hagberg, Aric Bettencourt, Luis M. A. BE Liu, H Liu, H Salerno, JJ Young, MJ TI When is social computation better than the sum of its parts? SO SOCIAL COMPUTING AND BEHAVIORAL MODELING LA English DT Proceedings Paper CT 2nd International Workshop on Social Computing, Behavioral Modeling and Prediction CY MAR 31-APR 01, 2009 CL Phoenix, AZ ID COMMITTEE; QUERY AB Social computation, whether in the form of searches performed by swarms of agents or collective predictions of markets, often supplies remarkably good solutions to complex problems. In many examples, individuals trying to solve a problem locally can aggregate their information and work together to arrive at a superior global solution. This suggests that there may be general principles of information aggregation and coordination that can transcend particular applications. Here we show that the general structure of this problem can be cast in terms of information theory and derive mathematical conditions that lead to optimal multi-agent searches. Specifically, we illustrate the problem in terms of local search algorithms for autonomous agents looking for the spatial location of a stochastic source. We explore the types of search problems, defined in terms of the statistical properties of the source and the nature of measurements at each agent, for which coordination among multiple searchers yields an advantage beyond that gained by having the same number of independent searchers. We show that effective coordination corresponds to synergy and that ineffective coordination corresponds to independence as defined using information theory. We classify explicit types of sources in terms of their potential for synergy. We show that sources that emit uncorrelated signals provide no opportunity for synergetic coordination while sources that emit signals that are correlated in some way, do allow for strong synergy between searchers. These general considerations are crucial for designing optimal algorithms for particular search problems in real world settings. C1 [Gintautas, Vadas; Hagberg, Aric; Bettencourt, Luis M. A.] Los Alamos Natl Lab, Ctr Nonlinear Studies & Appl Math & Plasma Phys, Div Theoret, Los Alamos, NM 87545 USA. EM vadasg@lanl.gov; hagberg@lanl.gov; lmbett@lanl.gov NR 12 TC 0 Z9 0 U1 1 U2 2 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES BN 978-1-4419-0055-5 PY 2009 BP 93 EP 101 DI 10.1007/978-1-4419-0056-2_13 PG 9 WC Behavioral Sciences; Computer Science, Theory & Methods; Social Issues; Psychology, Social SC Behavioral Sciences; Computer Science; Social Issues; Psychology GA BJF11 UT WOS:000265381400013 ER PT B AU Sanfilippo, A Schryver, J Whitney, P Augustenborg, E Danielson, G Thompson, S AF Sanfilippo, Antonio Schryver, Jack Whitney, Paul Augustenborg, Elsa Danielson, Gary Thompson, Sandy BE Liu, H Liu, H Salerno, JJ Young, MJ TI VIM: A Platform for Violent Intent Modeling SO SOCIAL COMPUTING AND BEHAVIORAL MODELING LA English DT Proceedings Paper CT 2nd International Workshop on Social Computing, Behavioral Modeling and Prediction CY MAR 31-APR 01, 2009 CL Phoenix, AZ AB Radical and contentious activism may or may not evolve into violent behavior depending on contextual factors related to social, political, cultural and infrastructural conditions. Significant theoretical advances have been made in understanding these contextual factors and the import of their interrelations. However, there has been relatively little progress in the development of processes and capabilities that leverage such theoretical advances to automate the anticipatory analysis of violent intent. In this paper, we describe a framework that implements such processes and capabilities, and discuss the implications of using the resulting system to assess the emergence of radicalization leading to violence. C1 [Sanfilippo, Antonio; Whitney, Paul; Augustenborg, Elsa; Danielson, Gary; Thompson, Sandy] Pacific Northwest Natl Lab, 902 Battelle Blvd, Richland, WA 99352 USA. [Schryver, Jack] Oak Ridge Natl Lab, Oak Ridge, TN USA. RP Sanfilippo, A (reprint author), Pacific Northwest Natl Lab, 902 Battelle Blvd, Richland, WA 99352 USA. EM antonio.sanfilippo@pnl.gov; schryverjc@ornl.gov; paul.whitney@pnl.gov; elsa.augustenborg@pnl.gov; gary.danielson@pnl.gov; sandy.thompson@pnl.gov RI Sanfilippo, Antonio/B-6743-2016 OI Sanfilippo, Antonio/0000-0001-7097-4562 NR 22 TC 0 Z9 0 U1 1 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES BN 978-1-4419-0055-5 PY 2009 BP 190 EP + DI 10.1007/978-1-4419-0056-2_24 PG 3 WC Behavioral Sciences; Computer Science, Theory & Methods; Social Issues; Psychology, Social SC Behavioral Sciences; Computer Science; Social Issues; Psychology GA BJF11 UT WOS:000265381400024 ER PT J AU Olsen, BD Li, XF Wang, J Segalman, RA AF Olsen, Bradley D. Li, Xuefa Wang, Jin Segalman, Rachel A. TI Near-surface and internal lamellar structure and orientation in thin films of rod-coil block copolymers SO SOFT MATTER LA English DT Article ID ASYMMETRIC DIBLOCK COPOLYMERS; X-RAY-SCATTERING; GRAZING-INCIDENCE; TRIBLOCK COPOLYMER; CONJUGATED BLOCK; NANOSTRUCTURES; ANGLE; TRANSITIONS; BEHAVIOR; ORGANIZATION AB Controlling the three-dimensional structure of rod-coil block copolymer thin films is critical for the optimization of the carrier transport properties and exciton dissociation or carrier recombination efficiencies at interfaces in optoelectronic polymers. Using a model rod-coil block copolymer based on poly(alkoxyphenylenevinylene-b-isoprene) (PPV-b-PI), the structure and orientation of thermally self-assembled rod-coil block copolymer thin films is investigated with grazing-incidence small-angle X-ray scattering (GISAXS), dynamic secondary ion mass spectrometry (DSIMS), scanning force microscopy (SFM), and cross-sectional transmission electron microscopy. Grains of lamellae are grown in films with one supported and one free interface by thermal annealing below the order-disorder transition from an initially structureless solution-cast state. In films only a few lamellar layers thick, parallel lamellar grains that span the entire film thickness are formed due to surface templating of lamellar orientation. As film thickness is increased, the lamellar block copolymers take on a bimodal orientation, with parallel and perpendicularly oriented microphases distributed uniformly throughout the center of the film. The vacuum interface is coated in a similar to 10 nm thick layer of perpendicular lamellae, while the supported interface is covered with a single parallel oriented layer of block copolymer due to surface segregation of the polyisoprene block. Further increasing the thickness results in partial loss of orientational order as the bulk structure is approached. Strong suppression of the primary scattering peak is observed near a coil fraction of 0.7 for parallel lamellae, indicating changes in form factor from the bulk or perpendicularly oriented structures. Large dilations in the average perpendicular lamellar domain spacing are also observed in thin films as defects between perpendicular lamellar grains. As the film thickness increases, the lamellar period asymptotically decreases to the bulk value. The lamellae dilate rather than bending due to the high modulus of the PPV liquid crystalline nanodomains. Parallel lamellae show no dilation because of the free interface. C1 [Olsen, Bradley D.; Segalman, Rachel A.] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. [Li, Xuefa; Wang, Jin] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. [Olsen, Bradley D.; Segalman, Rachel A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Segalman, RA (reprint author), Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. EM segalman@berkeley.edu RI Fan, Yin/G-2594-2011; OI Olsen, Bradley/0000-0002-7272-7140; Segalman, Rachel/0000-0002-4292-5103 FU NSF; U. S. Department of Energy, Office of Basic Energy Sciences [W-31-109-ENG-38]; Fannie and John Hertz Foundation FX We gratefully acknowledge support from an NSF CAREER award. This work made use of the Materials Research Lab Central Facilities at the University of California Santa Barbara supported by the National Science Foundation. We would like to thank Tom Mates for assistance with SIMS experiments. GISAXS experiments were conducted at the APS, supported by the U. S. Department of Energy, Office of Basic Energy Sciences, under Contract No. W-31-109-ENG-38. The authors thank the APS Sector 8 staff for assistance with these experiments. TEM experiments were performed at the National Center for Electron Microscopy at LBNL, also supported by the U. S. Department of Energy, Office of Basic Energy Sciences. B. D. Olsen gratefully acknowledges the Fannie and John Hertz Foundation for a graduate fellowship. NR 58 TC 20 Z9 20 U1 1 U2 15 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1744-683X J9 SOFT MATTER JI Soft Matter PY 2009 VL 5 IS 1 BP 182 EP 192 DI 10.1039/b809092k PG 11 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Polymer Science SC Chemistry; Materials Science; Physics; Polymer Science GA 406CH UT WOS:000263272100023 ER PT J AU Zhou, J Wang, GN Marquez, M Hu, ZB AF Zhou, Jun Wang, Guonan Marquez, Manuel Hu, Zhibing TI The formation of crystalline hydrogel films by self-crosslinking microgels SO SOFT MATTER LA English DT Article ID COLLOIDAL CRYSTALS; N-ISOPROPYLACRYLAMIDE; POLY(N-ISOPROPYLACRYLAMIDE) MICROGELS; OPTICAL-PROPERTIES; GELS; PH; MICROSPHERES; COPOLYMERS; POLYMERS; BEHAVIOR AB Monodisperse spheres composed of a copolymer of poly(N-isopropylacrylamide) (PNIPAM) and N-hydroxymethylacrylamide (NMA) were prepared and used as building blocks for a thin hydrogel film. A dilute dispersion of these microgels was allowed to dry in air, resulting in the formation of crystalline microgel structures at the air/dispersion interface. Taking advantage of self-crosslinking property of NMA, the neighboring PNIPAM-NMA microgels reacted to form covalent bonds to stabilize the crystalline structure after the water was completely evaporated from the particle dispersion at ambient temperature. After immersion in water, this film not only absorbed a large amount of water like a conventional hydrogel but also exhibited iridescent colors due to long range ordered microgel arrays. The thermally responsive properties and mechanical properties of this film were studied. C1 [Zhou, Jun; Wang, Guonan; Hu, Zhibing] Univ N Texas, Dept Phys, Denton, TX 76203 USA. [Zhou, Jun; Wang, Guonan; Hu, Zhibing] Univ N Texas, Dept Mat Sci & Engn, Denton, TX 76203 USA. [Marquez, Manuel] NIST, Ctr Theoret & Computat Nanosci, Gaithersburg, MD 20899 USA. [Marquez, Manuel] Arizona State Univ, Harrington Dept Bioengn, Tempe, AZ 85287 USA. [Marquez, Manuel] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA. RP Hu, ZB (reprint author), Univ N Texas, Dept Phys, POB 311427, Denton, TX 76203 USA. EM zbhu@unt.edu RI Zhou, Jun/H-3484-2013 FU National Science Foundation [DMR-0507208] FX We gratefully acknowledge the support from the National Science Foundation under Grant DMR-0507208. NR 40 TC 18 Z9 20 U1 2 U2 39 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1744-683X J9 SOFT MATTER JI Soft Matter PY 2009 VL 5 IS 4 BP 820 EP 826 DI 10.1039/b814830a PG 7 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Polymer Science SC Chemistry; Materials Science; Physics; Polymer Science GA 406CJ UT WOS:000263272300016 ER PT J AU Whitelam, S Feng, EH Hagan, MF Geissler, PL AF Whitelam, Stephen Feng, Edward H. Hagan, Michael F. Geissler, Phillip L. TI The role of collective motion in examples of coarsening and self-assembly SO SOFT MATTER LA English DT Article ID MONTE-CARLO SIMULATIONS; DYNAMICS; PROTEIN; ALGORITHM; KINETICS; MODEL AB The simplest prescription for building a patterned structure from its constituents is to add particles, one at a time, to an appropriate template. However, self-organizing molecular and colloidal systems in nature can evolve in much more hierarchical ways. Specifically, constituents (or clusters of constituents) may aggregate to form clusters (or clusters of clusters) that serve as building blocks for later stages of assembly. Here we evaluate the character and consequences of such collective motion in a set of prototypical assembly processes. We do so using computer simulations in which a system's capacity for hierarchical dynamics can be controlled systematically. By explicitly allowing or suppressing collective motion, we quantify its effects. We find that coarsening within a two dimensional attractive lattice gas (and an analogous off-lattice model in three dimensions) is naturally dominated by collective motion over a broad range of temperatures and densities. Under such circumstances, cluster mobility inhibits the development of uniform coexisting phases, especially when macroscopic segregation is strongly favored by thermodynamics. By contrast, the assembly of model viral capsids is not frustrated but is instead facilitated by collective moves, which promote the orderly binding of intermediates consisting of several monomers. C1 [Whitelam, Stephen; Geissler, Phillip L.] Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA. [Whitelam, Stephen; Geissler, Phillip L.] Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. [Whitelam, Stephen] Univ Warwick, Syst Biol Ctr, Coventry CV4 7AL, W Midlands, England. [Whitelam, Stephen; Feng, Edward H.; Geissler, Phillip L.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Hagan, Michael F.] Brandeis Univ, Dept Phys, Waltham, MA 02254 USA. RP Whitelam, S (reprint author), Lawrence Berkeley Natl Lab, Phys Biosci Div, 1 Cyclotron Rd, Berkeley, CA 94720 USA. RI Hagan, Michael/N-2177-2014 OI Hagan, Michael/0000-0002-9211-2434 FU NIAID NIH HHS [R01 AI080791, R01 AI080791-01] NR 42 TC 66 Z9 66 U1 2 U2 25 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1744-683X J9 SOFT MATTER JI Soft Matter PY 2009 VL 5 IS 6 BP 1251 EP 1262 DI 10.1039/b810031d PG 12 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Polymer Science SC Chemistry; Materials Science; Physics; Polymer Science GA 417SX UT WOS:000264099800016 PM 23227104 ER PT J AU Martin-Molina, A Calero, C Faraudo, J Quesada-Perez, M Travesset, A Alvarez, RH AF Martin-Molina, Alberto Calero, Carles Faraudo, Jordi Quesada-Perez, Manuel Travesset, Alex Alvarez, Roque Hidalgo- TI The hydrophobic effect as a driving force for charge inversion in colloids SO SOFT MATTER LA English DT Article ID MULTIVALENT IONS; DOUBLE-LAYER; SIMULATIONS; REVERSAL; WATER; MODEL; ELECTROLYTES; MACROIONS; PARTICLE; SOLVENTS AB A new mechanism for charge inversion of colloids in electrolyte solutions based on the hydrophobic effect is presented. We show that this mechanism is able to induce charge inversion at low concentrations (similar to mM) of monovalent ions containing hydrophobic functional groups and present for the first time experimental evidence of this prediction. We provide a simple mean field theoretical model that successfully describes the experimental data up to charge inversion. Saturation effects appearing at higher concentrations are also discussed. C1 [Calero, Carles; Faraudo, Jordi] CSIC, Inst Ciencia Mat Barcelona, E-08193 Bellaterra, Spain. [Martin-Molina, Alberto; Alvarez, Roque Hidalgo-] Univ Granada, Dpto Fis Aplicada, Grp Fis Fluidos & Biocoloides, E-18071 Granada, Spain. [Quesada-Perez, Manuel] Univ Jaen, Escuela Politecn Super, Dept Fis, Jaen 23700, Spain. [Travesset, Alex] Iowa State Univ, Dept Phys, Ames, IA 50011 USA. [Travesset, Alex] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. RP Faraudo, J (reprint author), CSIC, Inst Ciencia Mat Barcelona, Campus UAB, E-08193 Bellaterra, Spain. EM jfaraudo@icmab.es RI FARAUDO, JORDI/F-4921-2012; Martin Molina, Alberto/A-6260-2009; Quesada-Perez, Manuel/H-9975-2016; Calero, Carles/B-4178-2017; OI FARAUDO, JORDI/0000-0002-6315-4993; Martin Molina, Alberto/0000-0001-8023-8665; Calero, Carles/0000-0002-1977-1724; Hidalgo-Alvarez, Roque/0000-0003-0309-0710; Quesada Perez, Manuel/0000-0003-0519-7845 FU Spanish Government [MAT2006-12918-C05-02 and -01, FIS2006-12296-C02-01]; Junta de Andalucia [P07-FQM-2496]; Generalitat de Catalunya [2005SGR00087]; NSF [DMR-0426597]; DOE-BES [DE-AC02-07CH11358]; Programa Ramony Cajal, 2005; MEC Fondo Social Europeo [RYC-2005-000829]; Spanish National Research Council (CSIC). FX We thank J. Berriel-Mastretta for his help in experiments, Dr M. Blesa (UNSAM, Argentina) and Prof. J. Lyklema (Wageningen University) for helpful discussions. This work is supported by the Spanish Government (grants MAT2006-12918-C05-02 and -01,FIS2006-12296-C02-01), Junta de Andalucia ( grant P07-FQM-2496), Generalitat de Catalunya ( grant 2005SGR00087) and the NSF (grant DMR-0426597) and is partially supported by the DOE-BES through the Ames laboratory under contract no. DE-AC02-07CH11358. A. M.-M. is supported by the Programa Ramony Cajal, 2005, MEC Fondo Social Europeo (RYC-2005-000829). C. C is supported by the JAE-doc program of the Spanish National Research Council (CSIC). NR 32 TC 25 Z9 25 U1 0 U2 12 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1744-683X EI 1744-6848 J9 SOFT MATTER JI Soft Matter PY 2009 VL 5 IS 7 BP 1350 EP 1353 DI 10.1039/b820489f PG 4 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Polymer Science SC Chemistry; Materials Science; Physics; Polymer Science GA 423VR UT WOS:000264524300006 ER PT J AU Yufa, N Fronk, S Darling, SB Divan, R Lopes, W Sibener, SJ AF Yufa, Nataliya Fronk, Stephanie Darling, Seth B. Divan, Ralu Lopes, W. Sibener, S. J. TI Modifying metal-polymer nanostructures using UV exposure SO SOFT MATTER LA English DT Article ID DIBLOCK COPOLYMER TEMPLATES; BLOCK-COPOLYMERS; THIN-FILMS; DEPOSITION; NANOPARTICLES; PATTERNS; SURFACES AB Metals have a variety of behaviors when deposited onto diblock copolymer films, in particular, poly(styrene-b-methylmethacrylate). Silver is known to form nanowires, whereas gold forms ellipsoidal nanoparticles of different sizes on each of the blocks, and chromium creates a uniform film on PS-b-PMMA. We show that with UV light we can alter the separation between silver nanowires, by making each wire narrower. We also demonstrate the effects of UV light on PS-b-PMMA coated with thin layers of gold and chromium, as observed with atomic force microscopy and transmission electron microscopy. We have found that UV exposure increased corrugation of such metal-polymer hybrids by removing PMMA domains, but did not remove metal residing on top of those domains. The ability to manipulate the morphology of these nanomaterials has potential application in areas such as electronics and sensor technology. C1 [Yufa, Nataliya; Fronk, Stephanie; Sibener, S. J.] Univ Chicago, James Franck Inst, Chicago, IL 60637 USA. [Fronk, Stephanie; Sibener, S. J.] Univ Chicago, Dept Chem, Chicago, IL 60637 USA. [Yufa, Nataliya] Univ Chicago, Dept Phys, Chicago, IL 60637 USA. [Darling, Seth B.; Divan, Ralu] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. [Lopes, W.] Williams Coll, Dept Phys, Williamstown, MA 01267 USA. RP Sibener, SJ (reprint author), Univ Chicago, James Franck Inst, Chicago, IL 60637 USA. EM s-sibener@uchicago.edu FU Army Research Office/DTRA; U of C MRSEC [NSF-DMR-0213745]; U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357] FX The authors would like to thank Yimei Zheng and Robert Josephs for their assistance with TEM imaging and Daniel Rosenmann for assistance with sputter deposition. We thank Hanqiu Yuan for the lamp intensity measurement. This work was supported by the Army Research Office/DTRA, and by U of C MRSEC grant NSF-DMR-0213745. Use of the Center for Nanoscale Materials was supported by the U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under contract No. DE-AC02-06CH11357. NR 33 TC 11 Z9 11 U1 0 U2 10 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1744-683X EI 1744-6848 J9 SOFT MATTER JI Soft Matter PY 2009 VL 5 IS 8 BP 1683 EP 1686 DI 10.1039/b820775e PG 4 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Polymer Science SC Chemistry; Materials Science; Physics; Polymer Science GA 430VI UT WOS:000265017200019 ER PT J AU Alonzo, J Mays, JW Kilbey, SM AF Alonzo, Jose Mays, Jimmy W. Kilbey, S. Michael, II TI Forces of interaction between surfaces bearing looped polymer brushes in good solvent SO SOFT MATTER LA English DT Article ID TRIBLOCK COPOLYMERS; BLOCK-COPOLYMERS; NEUTRON REFLECTIVITY; POLY(ETHYLENE OXIDE); ADSORPTION; MICA; CHAINS; MODEL; INTERFACE; DENSITY AB In a previous publication we suggested [Huang et al., Macromolecules, 2008, 41, 1745-1752] that looped polymer brushes formed by tethering chains by both ends to a surface may exhibit a polydispersity-like effect due to a distribution of distances between tethering points, leading to segment density profiles dominated by a long and diffuse exponentially-decaying tail. To study this issue in more detail, the force profiles (forces of interaction as a function of separation distance) of a series of looped polymer brushes made by preferential adsorption of poly(2-vinylpyridine)-polystyrene-poly(2-vinylpyridine) (PVP-b-PS-b-PVP) triblock copolymers of varying molecular weight and asymmetry ratio are measured using the surface forces apparatus. The force profiles are analyzed using an equivalent diblock model, which considers the triblock copolymer brushes as being comprised of two diblock copolymers of half the PS molecular weight. While scaling the dependencies of the interaction energy and distance on molecular weight, the tethering density and segment size coalesce the measured force profiles to the "universal profile'', it is necessary to include polydispersity in the description of the equilibrium structure. This is done using the self-consistent field model of Milner et al. [Macromolecules, 1988, 21, 2610-2619]. For looped brushes formed from the symmetric and moderately symmetric triblock copolymers we find that the polydispersity due to molecular weight distribution effectively accounts for the observed force profiles. On the other hand, agreement between the measured and predicted force profiles of looped brushes formed from highly asymmetric copolymers at low degrees-of-compression is achieved only if a much smaller value of the polydispersity index is used in the fitting. The implication of these results is that the shape of the segment density profiles is not due to the previously proposed anchor-induced polydispersity arising due to loop formation; however in the case of highly asymmetric copolymers, loop formation may constrain the stretching of the chains relative to what is expected for brushes formed from the equivalent diblock copolymer. C1 [Alonzo, Jose; Kilbey, S. Michael, II] Clemson Univ, Dept Chem & Biomol Engn, Clemson, SC 29634 USA. [Mays, Jimmy W.; Kilbey, S. Michael, II] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. [Mays, Jimmy W.; Kilbey, S. Michael, II] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA. RP Kilbey, SM (reprint author), Clemson Univ, Dept Chem & Biomol Engn, Clemson, SC 29634 USA. EM kilbeysmii@ornl.gov FU National Science Foundation [CRC-CHEM 0304807] FX This work was financially supported by the National Science Foundation through the Collaborative Research in Chemistry Program (award number CRC-CHEM 0304807). The authors thank Jack Douglas of NIST for helpful discussions. NR 42 TC 12 Z9 12 U1 2 U2 20 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1744-683X J9 SOFT MATTER JI Soft Matter PY 2009 VL 5 IS 9 BP 1897 EP 1904 DI 10.1039/b812534a PG 8 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Polymer Science SC Chemistry; Materials Science; Physics; Polymer Science GA 436KR UT WOS:000265413500019 ER PT J AU Gomez, EW Clack, NG Wu, HJ Groves, JT AF Gomez, Esther W. Clack, Nathan G. Wu, Hung-Jen Groves, Jay T. TI Like-charge interactions between colloidal particles are asymmetric with respect to sign SO SOFT MATTER LA English DT Article ID ATTRACTION; TRANSITIONS; CRYSTALLITES; MICROSCOPY; MEMBRANES; SURFACES; SPHERES AB Two-dimensional dispersions of colloidal particles with a range of surface chemistries and electrostatic potentials are characterized under a series of solution ionic strengths. A combination of optical imaging techniques are employed to monitor both the colloid structure and the electrostatic surface potential of individual particles in situ. We find that like-charge multiparticle interactions can be tuned from exclusively repulsive to long-range attractive by changing the particle surface composition. This behavior is strongly asymmetric with respect to the sign of the surface potential. Collective long-range attractive interactions are only observed among negatively charged particles. C1 [Clack, Nathan G.; Groves, Jay T.] Univ Calif Berkeley, Biophys Grad Grp, Berkeley, CA 94720 USA. [Gomez, Esther W.] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. [Groves, Jay T.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Groves, Jay T.] Univ Calif Berkeley, Howard Hughes Med Inst, Berkeley, CA 94720 USA. [Gomez, Esther W.; Wu, Hung-Jen; Groves, Jay T.] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA. RP Groves, JT (reprint author), Univ Calif Berkeley, Biophys Grad Grp, Berkeley, CA 94720 USA. EM JTGroves@lbl.gov RI Wunder, Stephanie/B-5066-2012; Zdilla, Michael/B-4145-2011; OI Wu, Hung-Jen/0000-0003-3082-7431 FU U. S. Department of Energy [DE-AC03-76SF00098] FX We thank Raghuveer Parthasarathy and Martin Forstner for discussion and comments. This work was supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U. S. Department of Energy under contract No. DE-AC03-76SF00098. NR 34 TC 17 Z9 17 U1 1 U2 5 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1744-683X J9 SOFT MATTER JI Soft Matter PY 2009 VL 5 IS 9 BP 1931 EP 1936 DI 10.1039/b821510c PG 6 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Polymer Science SC Chemistry; Materials Science; Physics; Polymer Science GA 436KR UT WOS:000265413500024 PM 25221611 ER PT J AU Alvine, KJ Ding, YF Douglas, JF Ro, HW Okerberg, BC Karim, A Soles, CL AF Alvine, Kyle J. Ding, Yifu Douglas, Jack F. Ro, Hyun Wook Okerberg, Brian C. Karim, Alamgir Soles, Christopher L. TI Capillary instability in nanoimprinted polymer films SO SOFT MATTER LA English DT Article ID CORRUGATION GRATINGS; SURFACE-TENSION; LITHOGRAPHY; DECAY; ROUGHNESS; THREADS; LIQUID; FLOW AB Capillary forces play an active role in defining the equilibrium structure of nanoscale patterns. This effect can be especially pronounced in soft materials such as polymers near or above their glass transition temperature (T(g)) where material flow is possible. In these situations, the effect of surface tension can produce varied and complex capillary instabilities, even in relatively simple geometries such as parallel-line-space grating patterns. Here we investigate a novel capillary instability that arises upon thermal annealing of nanoimprinted polystyrene line-space gratings with an underlying residual layer. This novel instability is characterized by the development of lateral undulations of the lines, culminating in the localized coalescence of adjacent imprinted lines. An exact analytic model of this undulatory instability is not tractable, but we introduce a simple physical model for this lateral instability based on the driving force to reduce the surface energy, as in the well-known Rayleigh Plateau instability, which is likewise surface-energy driven. Good agreement is obtained between this simplified model and our observations. Our insights into the nature of this instability have implications for controlling the thermal stability of nanoscale patterns fabricated by nanoimprint lithography or other lithography techniques. C1 [Alvine, Kyle J.; Ding, Yifu; Douglas, Jack F.; Ro, Hyun Wook; Okerberg, Brian C.; Karim, Alamgir; Soles, Christopher L.] Natl Inst Stand & Technol, Div Polymers, Gaithersburg, MD 20899 USA. [Alvine, Kyle J.] Pacific NW Natl Lab, Energy & Environm Directorate, Richland, WA 99352 USA. [Ding, Yifu] Univ Colorado, Dept Mech Engn, Boulder, CO 80309 USA. [Karim, Alamgir] Univ Akron, Dept Polymer Engn, Akron, OH 44325 USA. RP Alvine, KJ (reprint author), Natl Inst Stand & Technol, Div Polymers, Gaithersburg, MD 20899 USA. EM kyle.alvine@pnl.gov; jack.douglas@nist.gov; csoles@nist.gov FU NIST National Research Council; Pacific Northwest National Laboratory [DEAC05-76RL01830] FX K.J.A. and B.C.O. gratefully acknowledge support from the NIST National Research Council postdoctoral fellowship program. Partial support provided to K. J. A. by Pacific Northwest National Laboratory under DOE contract No. DEAC05-76RL01830 is gratefully acknowledged. Use of the NIST Combinatorial Methods Center equipment and the Materials Science and Engineering Laboratory Electron Microscopy Facility is gratefully acknowledged. We also thank C. M. Stafford for insightful discussions. NR 23 TC 14 Z9 15 U1 2 U2 17 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1744-683X J9 SOFT MATTER JI Soft Matter PY 2009 VL 5 IS 15 BP 2913 EP 2918 DI 10.1039/b901409h PG 6 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Polymer Science SC Chemistry; Materials Science; Physics; Polymer Science GA 473CX UT WOS:000268183900014 ER PT J AU Gregg, BA AF Gregg, Brian A. TI Charged defects in soft semiconductors and their influence on organic photovoltaics SO SOFT MATTER LA English DT Editorial Material ID SOLAR-CELLS; REGIOREGULAR POLY(3-HEXYLTHIOPHENE); TRANSPORT; FILMS AB Charged defects play an important, but often unrecognized, role in organic semiconductors and in photovoltaic cells made from them. Thermodynamic considerations show that the weak lattice forces characteristic of soft semiconductors inevitably lead to a high concentration of defects, some of which will be charged. The defect density in actual materials is discussed along with the different types of defects and their influence on the electrical properties and chemical stability. Charged defects act as dopants and thus may sometimes be beneficial, although low defect materials with purposely added dopants should be superior. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Gregg, BA (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. NR 34 TC 33 Z9 33 U1 0 U2 15 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1744-683X J9 SOFT MATTER JI Soft Matter PY 2009 VL 5 IS 16 BP 2985 EP 2989 DI 10.1039/b905722f PG 5 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Polymer Science SC Chemistry; Materials Science; Physics; Polymer Science GA 479VL UT WOS:000268689400001 ER PT J AU Marchal, F Guenoun, P Daillant, J Holley, DW Mays, JW AF Marchal, Frederic Guenoun, Patrick Daillant, Jean Holley, D. Wade Mays, Jimmy W. TI Unprecedented microemulsion boosting effect induced by a charged diblock copolymer: bending modulus and curvature frustration of the surfactant film SO SOFT MATTER LA English DT Article ID AMPHIPHILIC BLOCK-COPOLYMERS; PHASE-BEHAVIOR; THERMAL UNDULATIONS; EFFICIENCY BOOSTERS; ELASTIC PROPERTIES; FLUID MEMBRANES; POLYMER; OIL; POLYELECTROLYTES; INTERFACES AB Single-phase microemulsions made of comparable amounts of water and alkane cannot be stabilized unless a large proportion of surfactant is used. Typically 10 to 30% nonionic surfactants such as n-alkylpolyglycol ethers are required to form such phases. Over the past 15 years, several authors have shown that this proportion can be significantly reduced by adding minute amounts of neutral diblock copolymers. However, though the surfactant film elastic properties seem to play a role in this so-called efficiency boosting effect, there is no clear agreement about the influence of the copolymer on bending properties, and about the correlation between those properties and the boosting effect. We present in this paper an original experimental occurrence of the boosting effect by using charged diblock copolymers. Based on a combination of various experimental techniques, an unprecedented swelling is evidenced and discussed in terms of variations of bending modulus. In particular an expression of the microemulsion free energy density proposed by Andelman et al. is used to correlate successfully the surfactant film bending modulus to the boosting. A curvature "frustration'' between surfactant and copolymer is also pointed out as a possible contribution to the boosting effect. C1 [Marchal, Frederic; Guenoun, Patrick; Daillant, Jean] CEA Saclay, LIONS, IRAMIS, F-91191 Gif Sur Yvette, France. [Holley, D. Wade; Mays, Jimmy W.] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. [Mays, Jimmy W.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA. [Mays, Jimmy W.] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RP Guenoun, P (reprint author), CEA Saclay, LIONS, IRAMIS, F-91191 Gif Sur Yvette, France. FU US Department of Energy FX We thank J. Jestin for help with neutron scattering measurement, M. Delsanti for help with light scattering measurements and interpretation. V. Wintgens and C. Amiel are warmly thanked for lending us 0.1 mm thick cuvettes for neutron scattering as well as C. Blot for mechanical adjustment of the cell for the neutron scattering. JM acknowledges support from the US Department of Energy through the Center for Nanophase Materials Sciences at Oak Ridge National Laboratory. NR 40 TC 4 Z9 4 U1 2 U2 12 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1744-683X J9 SOFT MATTER JI Soft Matter PY 2009 VL 5 IS 20 BP 4006 EP 4014 DI 10.1039/b904990h PG 9 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Polymer Science SC Chemistry; Materials Science; Physics; Polymer Science GA 503NI UT WOS:000270542600030 ER PT J AU Tao, YF McCulloch, B Kim, S Segalman, RA AF Tao, Yuefei McCulloch, Bryan Kim, Suhan Segalman, Rachel A. TI The relationship between morphology and performance of donor-acceptor rod-coil block copolymer solar cells SO SOFT MATTER LA English DT Article ID DIBLOCK COPOLYMERS; RADICAL POLYMERIZATION; CONJUGATED POLYMERS; PERYLENE DIIMIDE; REGIOREGULAR POLY(3-HEXYLTHIOPHENE); PHOTOVOLTAIC PROPERTIES; NANOSTRUCTURE FORMATION; NANOSCALE MORPHOLOGY; FACILE SYNTHESIS; DERIVATIVES AB Self-assembled functional rod-coil block copolymers (poly(3-hexylthiophene)-b-poly(n-butyl acrylatestatacrylate perylene)) containing electron donor (poly(3-hexylthiophene)) and acceptor (perylene) moieties were synthesized, characterized, and studied in photovoltaic devices. The block copolymers were synthesized by a combination of the McCullough route yielding monodisperse polythiophene, living radical polymerization and finally "click chemistry''. The self-assembled nanostructure was tuned via time to control the degree of order. As a result, devices with active layers which were completely disordered (molecularly mixed), contain short range order in which the nanodomains were molecularly pure, but were poorly organized, or consisted of cylindrical fibrils with their long axes running parallel to the electrodes were compared. Active layers with well formed but poorly organized nanodomains had the highest photovoltaic efficiencies indicating that molecular scale segregation has a significant effect on device performance. The poor performance of the well defined cylindrical nanostructures is probably a reflection of the poor charge transport properties associated with the misorientation of the long axes parallel to the electrodes. C1 [Tao, Yuefei; McCulloch, Bryan; Segalman, Rachel A.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Tao, Yuefei; McCulloch, Bryan; Segalman, Rachel A.] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. [Tao, Yuefei; McCulloch, Bryan; Segalman, Rachel A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. [Kim, Suhan] Univ Calif Berkeley, Lawrence Berkeley Lab, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA. RP Segalman, RA (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. EM segalman@berkeley.edu RI McCulloch, Bryan/K-6916-2012; OI McCulloch, Bryan/0000-0002-6635-7374; Segalman, Rachel/0000-0002-4292-5103 FU Department of Energy Office of Basic Energy Sciences (DOE-BES) FX We gratefully acknowledge support from the Department of Energy Office of Basic Energy Sciences (DOE-BES) through the Plastic Electronics Program at Lawrence Berkeley National Lab (LBNL). We thank the Alivisatos group at UC Berkeley and the National Center for Electron Microscopy (NCEM) for assistance and use of instrumentation employed in this study. NR 71 TC 89 Z9 90 U1 3 U2 34 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1744-683X J9 SOFT MATTER JI Soft Matter PY 2009 VL 5 IS 21 BP 4219 EP 4230 DI 10.1039/b907836c PG 12 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Polymer Science SC Chemistry; Materials Science; Physics; Polymer Science GA 507FR UT WOS:000270837900021 ER PT J AU Priftis, D Sakellariou, G Baskaran, D Mays, JW Hadjichristidis, N AF Priftis, Dimitrios Sakellariou, Georgios Baskaran, Durairaj Mays, Jimmy W. Hadjichristidis, Nikos TI Polymer grafted Janus multi-walled carbon nanotubes SO SOFT MATTER LA English DT Article ID TRANSFER RADICAL POLYMERIZATION; SURFACE-INITIATED POLYMERIZATION; CATALYST-FUNCTIONALIZED SINGLE; RING-OPENING POLYMERIZATION; MIXED HOMOPOLYMER BRUSHES; ANIONIC-POLYMERIZATION; RAFT POLYMERIZATION; BLOCK-COPOLYMERS; POLYSTYRENE; ADSORPTION AB We describe a novel and facile strategy to modify the surface of carbon nanotubes (CNTs) with two chemically different polymer brushes utilizing the 'grafting from' technique. A [4 + 2] Diels-Alder cycloaddition reaction was used to functionalize multi-walled carbon nanotubes (MWNTs) with two different precursor initiators, one for ring opening polymerization (ROP) and one for atom transfer radical polymerization (ATRP). The binary functionalized MWNTs were used for the simultaneous surface initiated polymerizations of different monomers resulting in polymer grafted MWNTs that can form Janus type structures under appropriate conditions. (1)H NMR, FTIR and Raman spectra showed that the precursor initiators were successfully synthesized and covalently attached on the CNT surface. Thermogravimetric analysis (TGA) revealed that the grafted polymer content varies when different monomer ratios and polymerization times are used. The presence of an organic layer around the CNTs was observed through transmission electron microscopy (TEM). Differential scanning calorimetry (DSC) proved that the glass transition (T(g)) and melting (T(m)) temperatures of the grafted polymers are affected by the presence of the CNTs, while circular dichroism (CD) spectra indicated that the PLLA alpha-helix conformation remains intact. C1 [Priftis, Dimitrios; Sakellariou, Georgios; Hadjichristidis, Nikos] Univ Athens, Dept Chem, GR-10680 Athens, Greece. [Baskaran, Durairaj; Mays, Jimmy W.] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. [Mays, Jimmy W.] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN USA. [Mays, Jimmy W.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN USA. RP Sakellariou, G (reprint author), Univ Athens, Dept Chem, GR-10680 Athens, Greece. EM gsakellariou@chem.uoa.gr; hadjichristidis@chem.uoa.gr RI Durairaj, Baskaran/C-3692-2009; Sakellariou, Georgios/B-1752-2014 OI Durairaj, Baskaran/0000-0002-6886-5604; FU EU European Social Fund; Greek Ministry of Development GSRT; US Department of Energy, Basic Energy Sciences, Division of Materials Science and Engineering [DE-AC05-00OR22725] FX This research project (ENTER) was co-financed by EU European Social Fund (75%) and the Greek Ministry of Development GSRT (25%). The work at ORNL was supported by the US Department of Energy, Basic Energy Sciences, Division of Materials Science and Engineering (DE-AC05-00OR22725) and through a user project to JM at the Center for Nanophase Materials Sciences. NR 45 TC 25 Z9 25 U1 3 U2 70 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1744-683X J9 SOFT MATTER JI Soft Matter PY 2009 VL 5 IS 21 BP 4272 EP 4278 DI 10.1039/b908100c PG 7 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Polymer Science SC Chemistry; Materials Science; Physics; Polymer Science GA 507FR UT WOS:000270837900027 ER PT J AU Hu, YY Yusufoglu, Y Kanapathipillai, M Yang, CY Wu, YQ Thiyagarajan, P Deming, T Akinc, M Schmidt-Rohr, K Mallapragada, S AF Hu, Yan-Yan Yusufoglu, Yusuf Kanapathipillai, Mathumai Yang, Chu-Ya Wu, YaQiao Thiyagarajan, Papannan Deming, Timothy Akinc, Mufit Schmidt-Rohr, Klaus Mallapragada, Surya TI Self-assembled calcium phosphate nanocomposites using block copolypeptide templates SO SOFT MATTER LA English DT Article ID BIOMIMETIC SYNTHESIS; AQUEOUS-SOLUTIONS; MECHANICAL-PROPERTIES; POLY(VINYL ALCOHOL); SYNTHETIC-POLYMERS; APATITE FORMATION; NMR-SPECTROSCOPY; MINERAL CRYSTALS; HYDROXYAPATITE; BONE AB Polylysine and polyleucine based block copolypeptides (K(170)L(30)) that form gels at very low concentrations in aqueous media are used as templates for forming self-assembled calcium phosphate nanocomposites. The synthesis method allows for simultaneous formation of the self-assembled block copolypeptide gel and of the inorganic phase, providing inorganic contents of over 50 wt% in the nanocomposite, approaching the inorganic content in bone. The self-assembled nanocomposites are characterized by thermogravimetric analysis, X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, solid state nuclear magnetic resonance (NMR), transmission electron microscopy (TEM) and small angle X-ray scattering (SAXS). The nanocomposites formed in the presence of the block copolypeptide templates exhibit very different nanoparticle morphologies than those formed in the absence of the organic phase. Multinuclear solid state NMR methods are used to prove nanocomposite formation and characterize the secondary structure and mobility of the block copolypeptide template. The data from XRD, FTIR, and (31)P NMR consistently show that the inorganic phase present in the nanocomposite is carbonated hydroxyapatite of nano-scale dimensions, with an elongated plate-like morphology, observed by TEM and SAXS, similar to the mineral phase of natural bone. Overall, this approach allows a bioinspired bottom-up approach to self-assembled hydroxyapatite nanocomposites using block copolypeptide templates, which could have applications in tissue repair. C1 [Hu, Yan-Yan; Yusufoglu, Yusuf; Kanapathipillai, Mathumai; Wu, YaQiao; Akinc, Mufit; Schmidt-Rohr, Klaus; Mallapragada, Surya] Ames Lab, Ames, IA 50011 USA. [Hu, Yan-Yan; Yusufoglu, Yusuf; Mallapragada, Surya] Iowa State Univ, Ames, IA 50011 USA. [Yang, Chu-Ya; Deming, Timothy] Univ Calif Los Angeles, Dept Bioengn, Los Angeles, CA 90095 USA. [Thiyagarajan, Papannan] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Mallapragada, S (reprint author), Ames Lab, 3035 Sweeney Hall, Ames, IA 50011 USA. EM suryakm@iastate.edu RI Mallapragada, Surya/F-9375-2012; Hu, Yan-Yan/A-1795-2015; OI Hu, Yan-Yan/0000-0003-0677-5897; Deming, Timothy/0000-0002-0594-5025 FU US Department of Energy [DE-AC02-07CH11358]; US DOE, Office of Science, Office of Basic Energy Science [DE-AC02-06CH11357]; Royal Society of Chemistry FX This work was supported by the US Department of Energy under contract number DE-AC02-07CH11358. This work benefited from the use of APS and the IPNS, funded by the US DOE, Office of Science, Office of Basic Energy Science under contract no DE-AC02-06CH11357. Supporting Information is available online from The Royal Society of Chemistry or from the authors. NR 80 TC 16 Z9 16 U1 4 U2 36 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1744-683X J9 SOFT MATTER JI Soft Matter PY 2009 VL 5 IS 21 BP 4311 EP 4320 DI 10.1039/b904440j PG 10 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Polymer Science SC Chemistry; Materials Science; Physics; Polymer Science GA 507FR UT WOS:000270837900033 ER PT J AU Ramanathan, M Darling, SB AF Ramanathan, Muruganathan Darling, Seth B. TI Thickness dependent hierarchical meso/nano scale morphologies of a metal-containing block copolymer thin film induced by hybrid annealing and their pattern transfer abilities SO SOFT MATTER LA English DT Article ID DIBLOCK COPOLYMERS; CRYSTALLIZATION KINETICS; LANGMUIR MONOLAYERS; POLYMER-FILMS; SURFACE; EVOLUTION; GROWTH; ARCHITECTURES; LITHOGRAPHY; FABRICATION AB In this paper we describe dewetting phenomena in organic (polystyrene, PS)/inorganic (polyferrocenyldimethylsilane, PFS) block copolymer thin films. Mesoscale dendritic structures are induced when the spin-cast thin film of this polymer is subjected to so-called hybrid annealing, which involves both thermal and solvent annealing. We show that the development and arrangement of these mesoscale dendritic structures depends on the initial film thickness in addition to the annealing time. Importantly, there are two criteria that must be fulfilled to achieve these mesoscale morphologies: (i) the film has to be subjected to hybrid annealing, i. e. either only thermal or only solvent annealing does not produce any notable mesostructures and (ii) both PS and PFS blocks must be present during the thermal and solvent annealing procedures; if one of the blocks, for instance PS, is removed before annealing then there is no mesostructure. Various possible mechanisms for the formation of these structures are discussed and results indicate that the PFS block dominates the structure formation. We also observe a ring-or worm-like nanostructure which develops only when the film is subjected to hybrid annealing at a particular film thickness. Apart from these results, here we demonstrate that mesoscale structures can be successfully transferred onto underlying substrates. C1 [Ramanathan, Muruganathan; Darling, Seth B.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. RP Ramanathan, M (reprint author), Argonne Natl Lab, Ctr Nanoscale Mat, 9700 S Cass Ave, Argonne, IL 60439 USA. EM Nathan@anl.gov RI Ramanathan, Muruganathan/B-6890-2011; Ramanathan, Muruganathan/A-3641-2013 OI Ramanathan, Muruganathan/0000-0001-7008-1131 FU U. S. Department of Energy; Office of Science; Office of Basic Energy Sciences [DE-AC02-06CH11357] FX Use of the Center for Nanoscale Materials was supported by the U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357 NR 50 TC 28 Z9 28 U1 0 U2 15 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1744-683X J9 SOFT MATTER JI Soft Matter PY 2009 VL 5 IS 23 BP 4665 EP 4671 DI 10.1039/b902114k PG 7 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Polymer Science SC Chemistry; Materials Science; Physics; Polymer Science GA 521GH UT WOS:000271907900009 ER PT J AU Vidyasagar, A Smith, HL Majewski, J Toomey, RG AF Vidyasagar, Ajay Smith, Hillary L. Majewski, Jaroslaw Toomey, Ryan G. TI Continuous and discontinuous volume-phase transitions in surface-tethered, photo-crosslinked poly(N-isopropylacrylamide) networks SO SOFT MATTER LA English DT Article ID CRITICAL SOLUTION TEMPERATURE; POLY N-ISOPROPYLACRYLAMIDE; COIL-GLOBULE TRANSITION; AQUEOUS-SOLUTIONS; FTIR SPECTROSCOPY; SWELLING BEHAVIOR; STATIONARY PHASES; HYDRATION; GELS; POLY(N-ISOPROPYLMETHACRYLAMIDE) AB The water-polymer demixing behavior of surface-tethered poly(N-isopropylacrylamide) networks copolymerized with x mol% of photo-crosslinkable methacryloyloxybenzophenone (MaBP) (x = 1, 3, 5, 10%) was characterized with neutron reflection and attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy. Neutron reflection revealed that water is expelled discontinuously at low crosslink densities and continuously at high crosslink densities. The demarcation between the two behaviors occurred roughly at the critical point as measured by cloud point experiments. The neutron reflection experiments further revealed that the discontinuous concentration jump at low crosslink densities takes place in the presence of significant amounts of water and that water is not completely expelled in the process, with 2-3 water molecules remaining per polymer segment after the collapse of the network, independent of crosslink density. Parallel measurements with ATR-FTIR confirm that the transition is driven by dehydration of the isopropyl groups, with water remaining confined between the amide groups even at temperatures well above the demixing temperature. The internal water, however, is readily exchanged with deuterium oxide at temperatures up to 100 degrees C. This exchange points to the absence of a hydrophobic skin or physical barrier that would prevent water from completely leaving the film above the demixing temperature. C1 [Vidyasagar, Ajay; Toomey, Ryan G.] Univ S Florida, Dept Chem Engn, Tampa, FL 33647 USA. [Smith, Hillary L.; Majewski, Jaroslaw] Los Alamos Natl Lab, Manuel Lujan Jr Neutron Scattering Ctr, Los Alamos, NM 87545 USA. RP Toomey, RG (reprint author), Univ S Florida, Dept Chem Engn, 4202 E Fowler Ave, Tampa, FL 33647 USA. EM rtoomey@eng.usf.edu RI Vidyasagar, Ajay/A-5412-2012; Lujan Center, LANL/G-4896-2012 FU Camille and Henry Dreyfus Foundation, NSF [DMR-0645574]; USF College of Engineering; Los Alamos National Laboratory [DOE W7405-ENG-36]; DOE Office of Basic Energy Science FX This work was supported by the Camille and Henry Dreyfus Foundation, NSF DMR-0645574, USF College of Engineering, and Los Alamos National Laboratory under DOE contract W7405-ENG-36, and the DOE Office of Basic Energy Science. NR 36 TC 19 Z9 19 U1 2 U2 17 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1744-683X J9 SOFT MATTER JI Soft Matter PY 2009 VL 5 IS 23 BP 4733 EP 4738 DI 10.1039/b904963k PG 6 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Polymer Science SC Chemistry; Materials Science; Physics; Polymer Science GA 521GH UT WOS:000271907900018 ER PT J AU Yang, L Wang, ST Fukuto, M Checco, A Niu, ZW Wang, Q AF Yang, Lin Wang, Suntao Fukuto, Masafumi Checco, Antonio Niu, Zhongwei Wang, Qian TI Structure and interaction in 2D assemblies of tobacco mosaic viruses SO SOFT MATTER LA English DT Article ID PERCUS-YEVICK EQUATION; MEMBRANE-PROTEIN; LIPID-BILAYERS; X-RAY; CRYSTALS; CRYSTALLIZATION; DIMENSIONS; INTERFACES; SCATTERING; SURFACES AB We created two-dimensional (2D) assemblies of tobacco mosaic viruses (TMVs) and characterized their structures using Atomic Force Microscopy (AFM) and X-ray scattering. The TMVs were adsorbed on an oppositely charged, fluid lipid monolayer supported by a solid substrate and submerged in a buffer solution. The lipid monolayer confined the viral particles within a plane, while providing them with lateral mobility so that overall the TMV assembly behaved like a 2D liquid. We controlled the inter-particle interaction by adjusting the chemical condition in the buffer to induce ordered TMV assemblies. We found that the presence of the lipid layer was essential for forming ordered TMV assemblies. Packed TMV assemblies formed on the lipid layer, with an average inter-particle spacing of 42 nm. By introducing Ca(2+) ions into the buffer solution, we were able to improve the in-plane order within the TMV assemblies and reduce the average inter-particle spacing to 20 nm, compared to the TMV diameter of 18 nm. Quantitative analysis of the X-ray scattering data shows that the structural order within the TMV assemblies prepared under a Ca(2+)-free buffer solution is consistent with purely repulsive, electrostatic inter-particle interaction. In contrast, the structural order within Ca(2+)-induced TMV assemblies is consistent with the behavior of a fluid of sticky rods, implying the presence of a strong attraction between TMVs. In addition to the screening of Coulomb repulsion, this behavior is likely the result of counterion-induced as well as membrane-mediated attractions. C1 [Yang, Lin; Wang, Suntao] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. [Fukuto, Masafumi; Checco, Antonio] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA. [Niu, Zhongwei; Wang, Qian] Univ S Carolina, Dept Chem & Biochem, Columbia, SC 29208 USA. [Niu, Zhongwei; Wang, Qian] Univ S Carolina, Nanoctr, Columbia, SC 29208 USA. RP Yang, L (reprint author), Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. EM lyang@bnl.gov RI niu, zhongwei/C-7671-2011; Yang, Lin/D-5872-2013; OI Yang, Lin/0000-0003-1057-9194; Wang, Qian/0000-0002-2149-384X FU U.S. Department of Energy (DOE) [DE-AC02-98CH10886]; NSF; W. M. Keck Foundation FX This research was supported by a NSET grant from U.S. Department of Energy (DOE). The X-ray measurements were performed at beamlines X21 (GISAXS), X22A and X6B (reflectivity) of the National Synchrotron Light Source, Brookhaven National Laboratory. Use of this facility was supported by the U.S. DOE, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-98CH10886. QW acknowledges the financial support from NSF and the W. M. Keck Foundation. NR 48 TC 14 Z9 14 U1 4 U2 28 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1744-683X J9 SOFT MATTER JI Soft Matter PY 2009 VL 5 IS 24 BP 4951 EP 4961 DI 10.1039/b911894b PG 11 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Polymer Science SC Chemistry; Materials Science; Physics; Polymer Science GA 526EX UT WOS:000272271600012 ER PT J AU Apezteguia, HP Izaurralde, RC Sereno, R AF Apezteguia, H. P. Izaurralde, R. C. Sereno, R. TI Simulation study of soil organic matter dynamics as affected by land use and agricultural practices in semiarid Cordoba, Argentina SO SOIL & TILLAGE RESEARCH LA English DT Article DE Environmental Policy Integrated Climate; Climate change; Soil carbon; No till; Corn; Soybean ID LONG-TERM; CARBON SEQUESTRATION; CROP MANAGEMENT; NITROGEN; EROSION; MODEL; PRODUCTIVITY; PHOSPHORUS; MITIGATION; SCALE AB Soil carbon sequestration has been recognized as an effective, low-cost technology to mitigate climate change. Simulation models, alone or in combination with soil sampling and other techniques, can help monitor changes in soil carbon levels as affected by climate, soil, and management conditions. The objective of this paper is to test the ability of the Environmental Policy Integrated Climate (EPIC) model to simulate total organic carbon (TOC) dynamics in soils of the central region of the Province of Cordoba (Argentina) and evaluate, through modeling, the capacity of Cordoba's agricultural soils to act as sources or sinks of atmospheric CO(2). We tested EPIC against measurements made in a spatially distributed 40-year chronosequence of a temperate shrubland forest transitioning to agricultural use with conventional practices and in two long-term tillage (moldboard plow, chisel plow, and no till) and crop rotation (maize [Zea mays L.]-soybean [Glycine max L. Merr.]) field studies. Overall, the EPIC model demonstrated a good capability for simulating TOC dynamics. In the chronosequence, the TOC lost during 40 years of cultivation after deforestation was calculated at 38.4 Mg ha(-1) while that simulated by the model was 44.1 Mg ha(-1). These values represented losses of 44% and 45% of the original TOC content, respectively. In the two long-term field experiments, the TOC simulated over the entire depth was close to the observed values and reflected the trends of the various treatments. For the most common conditions of croplands in Cordoba, crops grown in rotation with conservation tillage, particularly no till, would make soils act as sinks of atmospheric CO(2). (C) 2008 Elsevier B.V. All rights reserved. C1 [Apezteguia, H. P.; Sereno, R.] Univ Nacl Cordoba, Fac Ciencias Agropecuarias, Grp Gest Ambiental Suelo & Agua, RA-5000 Cordoba, Argentina. [Izaurralde, R. C.] Pacific NW Natl Lab, Joint Global Change Res Inst, College Pk, MD 20740 USA. [Izaurralde, R. C.] Univ Maryland, College Pk, MD 20740 USA. RP Apezteguia, HP (reprint author), Univ Nacl Cordoba, Fac Ciencias Agropecuarias, Grp Gest Ambiental Suelo & Agua, Av Valparaiso S-N,Ciudad Univ,CC 509, RA-5000 Cordoba, Argentina. EM hapezte@agro.uncor.edu RI Izaurralde, Roberto/E-5826-2012 FU CONICET (Argentina); Agencia Cordoba Ciencia (Cordoba, Argentina); Secretaria de Ciencia y Tecnologia de la Universidad Nacional de Cordoba (Argentina); Fulbright Commission; USDOE Consortium for Research on Enhanced Carbon Sequestration in Terrestrial Ecosystems (CSiTE); USDA Consortium for Agricultural Soils Mitigation of Greenhouse Gases (CASMGS) FX The authors are grateful to agricultural producer Mr. Abel Chialva for allowing us to sample his farm and for providing information on historical land use and management. We also thank Ing. Agr. Pedro Salas and Geol. Edgar Lovera, from INTA (Instituto Nacional de Tecnologia Agropecuaria) Manfredi Experimental Station, for their technical expertise. The project was supported by CONICET (Argentina), Agencia Cordoba Ciencia (Cordoba, Argentina), Secretaria de Ciencia y Tecnologia de la Universidad Nacional de Cordoba (Argentina), the Fulbright Commission, the USDOE Consortium for Research on Enhanced Carbon Sequestration in Terrestrial Ecosystems (CSiTE), and the USDA Consortium for Agricultural Soils Mitigation of Greenhouse Gases (CASMGS) research programs. NR 40 TC 22 Z9 22 U1 1 U2 16 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-1987 J9 SOIL TILL RES JI Soil Tillage Res. PD JAN PY 2009 VL 102 IS 1 BP 101 EP 108 DI 10.1016/j.still.2008.07.016 PG 8 WC Soil Science SC Agriculture GA 395TQ UT WOS:000262546800013 ER PT J AU Gueymard, CA Myers, DR AF Gueymard, Christian A. Myers, Daryl R. TI Evaluation of conventional and high-performance routine solar radiation measurements for improved solar resource, climatological trends, and radiative modeling SO SOLAR ENERGY LA English DT Article DE Solar radiation; Irradiance; Radiometry; Pyranometer; Pyrheliometer; Transposition ID SURFACE SHORTWAVE IRRADIANCE; BIDIRECTIONAL-REFLECTANCE; DIFFUSE IRRADIANCE; THERMAL OFFSET; PYRANOMETER MEASUREMENTS; SHADOW RING; BEER-SHEVA; INSTRUMENTATION; RADIOMETRY; RESPONSIVITY AB The solar renewable energy Community depends on radiometric measurements and instrumentation for data to design and monitor solar energy systems, and develop and validate solar radiation models. This contribution evaluates the impact of instrument uncertainties contributing to data inaccuracies and their effect on short-term and long-term measurement series, and on radiation model validation studies. For the latter part, transposition (horizontal-to-tilt) models are used as ail example. Confirming previous studies, it is found that a widely used pyranometer strongly underestimates diffuse and global radiation, particularly in winter, unless appropriate corrective measures are taken. Other types of measurement problems are also discussed, such as those involved in the indirect determination of direct or diffuse irradiance, and in shadowband correction methods. The sensitivity of the predictions from transposition models to inaccuracies in input radiation data is demonstrated. Caution is therefore issued to the whole community regarding drawing detailed conclusions about solar radiation data without due attention to the data quality issues Only recently identified. (C) 2008 Elsevier Ltd. All rights reserved. C1 [Gueymard, Christian A.] Solar Consulting Serv, Colebrook, NH 03576 USA. [Myers, Daryl R.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Gueymard, CA (reprint author), Solar Consulting Serv, POB 392, Colebrook, NH 03576 USA. EM Chris@SolarConsultingServices.com FU US Department of Energy [DE-AC36-99GO10337]; Midwest Research Institute [DE-AC36-99GO10337] FX The help of Afshin Andreas in compiling the monthly data of SRRL is highly appreciated. NREL Solar Radiation Research Laboratory operations are supported by the Solar Energy Technology Research Program under Contract #DE-AC36-99GO10337 between the US Department of Energy and Midwest Research Institute. NR 64 TC 52 Z9 52 U1 3 U2 18 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0038-092X J9 SOL ENERGY JI Sol. Energy PY 2009 VL 83 IS 2 BP 171 EP 185 DI 10.1016/j.solener.2008.07.015 PG 15 WC Energy & Fuels SC Energy & Fuels GA 406TT UT WOS:000263318500005 ER PT B AU Guzik, JA AF Guzik, J. A. BE Dikpati, M Arentoft, T Hernandez, IG Lindsey, C Hill, F TI Exploring Changes in Solar Model Physics to Mitigate the Solar Abundance Problem SO SOLAR-STELLAR DYNAMOS AS REVEALED BY HELIO AND ASTEROSEISMOLOGY: GONG 2008/SOHO 21 SE Astronomical Society of the Pacific Conference Series LA English DT Proceedings Paper CT Workshop on Solar-Stellar Dynamos as Revealed by Helio and Asteroseismology (GONG 2008/SOHO 21) CY AUG 11-15, 2008 CL High Altitude Observ, Boulder, CO HO High Altitude Observ AB Solar models calibrated using the AGS05 solar abundance mixture do not produce as good agreement with oscillation frequencies or helioseismic inferences of sound speed, convection zone depth, or convection zone helium abundance compared to models using the older GS98 or GN93 abundances. Here we summarize attempts to date to mitigate this problem, and show the effects of including low-Z accretion or convective overshooting as examples. We find that including more elements in the mixture used to generate Rosseland mean opacities has a negligible effect on these opacities for solar interior temperatures and densities, so will not provide a solution to this problem. C1 Los Alamos Natl Lab, Los Alamos, NM USA. RP Guzik, JA (reprint author), Los Alamos Natl Lab, MS T-086, Los Alamos, NM USA. NR 11 TC 0 Z9 0 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA BN 978-1-58381-712-4 J9 ASTR SOC P PY 2009 VL 416 BP 249 EP 252 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BQL27 UT WOS:000281240900043 ER PT B AU Reindel, A Bradley, PA Tsantilas, S Guzik, JA AF Reindel, A. Bradley, P. A. Tsantilas, S. Guzik, J. A. BE Dikpati, M Arentoft, T Hernandez, IG Lindsey, C Hill, F TI Applying Fourier and Variable Sine Algorithmic Analysis to Solar Data SO SOLAR-STELLAR DYNAMOS AS REVEALED BY HELIO AND ASTEROSEISMOLOGY: GONG 2008/SOHO 21 SE Astronomical Society of the Pacific Conference Series LA English DT Proceedings Paper CT Workshop on Solar-Stellar Dynamos as Revealed by Helio and Asteroseismology (GONG 2008/SOHO 21) CY AUG 11-15, 2008 CL High Altitude Observ, Boulder, CO HO High Altitude Observ AB Observations of the solar magnetic cycle via sunspots and other indicators show varying periods and amplitudes that may be better understood through time series analysis. We analyze the solar cycle by applying a new method, the Variable Sine Algorithmic Analysis (VSAA) to sunspot observations and carbon-14 tree ring data. The VSAA algorithm and applications were discussed by Tsantilas and Rovithis-Livaniou at the June 2008 HELAS asteroseismology workshop in Wroclaw. We hope to gain a better understanding of solar cycle variations such as the Maunder Minimum that might be useful to predicting future solar cycle variations. C1 [Reindel, A.] Los Alamos Natl Lab, Cornell Coll, MS T-086, Los Alamos, NM 87544 USA. [Reindel, A.] Cornell Coll, Mt Vernon, IA 52314 USA. [Tsantilas, S.] Univ Athens, Dept Astron, Dept Astron & Mech, Athens, Greece. RP Reindel, A (reprint author), Los Alamos Natl Lab, Cornell Coll, MS T-086, Los Alamos, NM 87544 USA. EM areindel@lanl.gov NR 5 TC 1 Z9 1 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA BN 978-1-58381-712-4 J9 ASTR SOC P PY 2009 VL 416 BP 533 EP + PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BQL27 UT WOS:000281240900092 ER PT S AU Surdoval, WA AF Surdoval, Wayne A. BE Singhal, SC Yokokawa, H TI The Status of SOFC Programs in USA 2009 SO SOLID OXIDE FUEL CELLS 11 (SOFC-XI) SE ECS Transactions LA English DT Proceedings Paper CT 11th International Symposium on Solid Oxide Fuel Cells (SOFC) CY OCT 04-09, 2009 CL Vienna, AUSTRIA SP Electrochem Soc, Inc, High Temp Mat Div, Electrochem Soc, Inc, Battery Div, Electrochem Soc, Inc, Energy Technol Div, SOFC Soc Japan, Electrochem Soc, Inc, Dokiya Mem Fund, Plansee SE, Staxera GmbH, Ningbo Inst Mat Technol & Engn AB The U. S. Department of Energy's (DOE) Office of Fossil Energy's (FE) National Energy Technology Laboratory (NETL), in partnership with private industry, educational institutions and national laboratories, is leading the research, development, and demonstration of high efficiency, fuel flexible solid oxide fuel cells (SOFCs) and coal-based SOFC power generation systems for stationary market large central power plants. The FE Fuel Cell Program has three parts under the Solid State Energy Conversion Alliance (SECA): cost reduction, coal-based systems, and research and development. The SECA cost reduction goal is to have SOFC stacks capable of being manufactured at $170 per kilowatt (2007 basis) by 2010. Concurrently, the scale-up, aggregation, and integration of the technology will progress in parallel leading to prototype validation of megawatt (MW)-class fuel flexible products by 2012 and 2015. The SECA coal-based systems goal is the development of large (greater than 100 MW) integrated gasification fuel cell (IGFC) power systems. C1 US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. RP Surdoval, WA (reprint author), US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. NR 3 TC 5 Z9 5 U1 1 U2 1 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 S MAIN ST, PENNINGTON, NJ 08534-2839 USA SN 1938-5862 BN 978-1-60768-089-5 J9 ECS TRANSACTIONS PY 2009 VL 25 IS 2 BP 21 EP 27 DI 10.1149/1.3205504 PG 7 WC Electrochemistry; Energy & Fuels SC Electrochemistry; Energy & Fuels GA BA7QO UT WOS:000337724700003 ER PT S AU Mukerjee, S Haltiner, K Klotzbach, D Vordonis, J Iyer, A Kerr, R Sprenkle, V Kim, JY Meinhardt, K Canfield, N Darsell, J Kirby, B Oh, TK Maupin, G Voldrich, B Bonnett, J AF Mukerjee, Subhasish Haltiner, Karl Klotzbach, Darasack Vordonis, Jim Iyer, Arun Kerr, Rick Sprenkle, Vince Kim, Jin Yong Meinhardt, Kerry Canfield, Nathan Darsell, Jens Kirby, Brent Oh, Tak Keun Maupin, Gary Voldrich, Bill Bonnett, Jeff BE Singhal, SC Yokokawa, H TI Solid Oxide Fuel Cell Stack for Transportation and Stationary Applications SO SOLID OXIDE FUEL CELLS 11 (SOFC-XI) SE ECS Transactions LA English DT Proceedings Paper CT 11th International Symposium on Solid Oxide Fuel Cells (SOFC) CY OCT 04-09, 2009 CL Vienna, AUSTRIA SP Electrochem Soc, Inc, High Temp Mat Div, Electrochem Soc, Inc, Battery Div, Electrochem Soc, Inc, Energy Technol Div, SOFC Soc Japan, Electrochem Soc, Inc, Dokiya Mem Fund, Plansee SE, Staxera GmbH, Ningbo Inst Mat Technol & Engn AB Delphi is developing solid oxide fuel cell (SOFC) technology for applications in a variety of markets. This paper outlines the development of SOFC stacks for transportation and stationary applications. This paper outlines key achievements in stack development in moving forward towards meeting the goals for commercialization. C1 [Mukerjee, Subhasish; Haltiner, Karl; Klotzbach, Darasack; Vordonis, Jim; Iyer, Arun; Kerr, Rick] Delphi Corp, West Henrietta, NY 14586 USA. [Sprenkle, Vince; Kim, Jin Yong; Meinhardt, Kerry; Canfield, Nathan; Darsell, Jens; Kirby, Brent; Oh, Tak Keun; Maupin, Gary; Voldrich, Bill; Bonnett, Jeff] Battelle Mem Inst, Pacific Northwest Natl lab, Richland, WA 99352 USA. RP Mukerjee, S (reprint author), Delphi Corp, West Henrietta, NY 14586 USA. FU Solid State Energy Conversion Alliance ( SECA); U. S. Department of Energy; National Energy Technology Laboratory FX This work was partially funded by the Solid State Energy Conversion Alliance ( SECA), U. S. Department of Energy, National Energy Technology Laboratory. The authors would like to acknowledge the rest of the SOFC team for their contributions. NR 3 TC 6 Z9 6 U1 0 U2 2 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 S MAIN ST, PENNINGTON, NJ 08534-2839 USA SN 1938-5862 BN 978-1-60768-089-5 J9 ECS TRANSACTIONS PY 2009 VL 25 IS 2 BP 59 EP 63 DI 10.1149/1.3205508 PG 5 WC Electrochemistry; Energy & Fuels SC Electrochemistry; Energy & Fuels GA BA7QO UT WOS:000337724700007 ER PT S AU McDaniel, AH El Gabaly, F Akhadov, E Farrow, RL McCarty, KF Linne, MA Decaluwe, SC Zhang, C Eichhorn, B Jackson, GS Liu, Z Grass, M Hussain, Z Bluhm, H AF McDaniel, A. H. El Gabaly, F. Akhadov, E. Farrow, R. L. McCarty, K. F. Linne, M. A. Decaluwe, S. C. Zhang, C. Eichhorn, B. Jackson, G. S. Liu, Z. Grass, M. Hussain, Z. Bluhm, H. BE Singhal, SC Yokokawa, H TI In-situ Investigation of SOFC Patterned Electrodes Using Ambient-Pressure X-ray Photoelectron Spectroscopy SO SOLID OXIDE FUEL CELLS 11 (SOFC-XI) SE ECS Transactions LA English DT Proceedings Paper CT 11th International Symposium on Solid Oxide Fuel Cells (SOFC) CY OCT 04-09, 2009 CL Vienna, AUSTRIA SP Electrochem Soc, Inc, High Temp Mat Div, Electrochem Soc, Inc, Battery Div, Electrochem Soc, Inc, Energy Technol Div, SOFC Soc Japan, Electrochem Soc, Inc, Dokiya Mem Fund, Plansee SE, Staxera GmbH, Ningbo Inst Mat Technol & Engn ID OXIDE FUEL-CELLS; HYDROGEN OXIDATION; H2-H2O ATMOSPHERES; ANODES; NICKEL; NI; ELECTROCHEMISTRY; DEPOSITION; IMPEDANCE; SYSTEM AB Single chamber electrochemical cells were fabricated by patterning working and counter electrodes of Ni and Pt on single-crystal Y2O3-stabilized ZrO2. Cells were characterized in mixed atmospheres of H-2 and H2O at ratios of 1 : 1 and 1 : 20 at nominally 923 K and 67 Pa total pressure. Potential sweep and impedance measurements were conducted simultaneously with ambient-pressure x-ray photoelectron spectroscopy (APXPS), which is a unique synchrotron-based probe designed for in-situ chemical characterization of surfaces using photoemission at gas pressures large enough to achieve realistic densities of faradic current. Electrochemically induced oxidation of Ni was observed under anodic polarization and could be reversed by applying a cathodic bias. The thin-film microstructure could also be manipulated electrochemically in that pores exposing underlying electrolyte would open through the Ni film after polarization. Application of APXPS to resolve fundamental details of high-temperature electrochemical process in-situ is discussed. C1 [McDaniel, A. H.; El Gabaly, F.; Akhadov, E.; Farrow, R. L.; McCarty, K. F.; Linne, M. A.] Sandia Natl Labs, Livermore, CA 94551 USA. [Decaluwe, S. C.; Zhang, C.; Eichhorn, B.; Jackson, G. S.] Univ Maryland, Dept Mech Engn, College Pk, MD 20742 USA. [Liu, Z.; Grass, M.; Hussain, Z.; Bluhm, H.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP McDaniel, AH (reprint author), Sandia Natl Labs, Livermore, CA 94551 USA. FU U. S. Department of Energy [DE-AC04-94AL85000]; LBNL [DEAC02- 05CH11231]; Office of Naval Research [N000140510711] FX The authors would like to acknowledge financial support provided by the U. S. Department of Energy under Contract No. DE-AC04-94AL85000 (Sandia) and DEAC02- 05CH11231 (LBNL). UMD participants were supported by the Office of Naval Research under Contract No: N000140510711. NR 19 TC 2 Z9 2 U1 2 U2 6 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 S MAIN ST, PENNINGTON, NJ 08534-2839 USA SN 1938-5862 BN 978-1-60768-089-5 J9 ECS TRANSACTIONS PY 2009 VL 25 IS 2 BP 335 EP 343 DI 10.1149/1.3205541 PG 9 WC Electrochemistry; Energy & Fuels SC Electrochemistry; Energy & Fuels GA BA7QO UT WOS:000337724700040 ER PT S AU Escobar, JA Pakalapati, SR Celik, IB Finklea, H AF Escobar, J. A. Pakalapati, S. R. Celik, I. B. Finklea, H. BE Singhal, SC Yokokawa, H TI A Correction for Impedance Measurements Using the Three Point Electrode Technique in SOFCs SO SOLID OXIDE FUEL CELLS 11 (SOFC-XI) SE ECS Transactions LA English DT Proceedings Paper CT 11th International Symposium on Solid Oxide Fuel Cells (SOFC) CY OCT 04-09, 2009 CL Vienna, AUSTRIA SP Electrochem Soc, Inc, High Temp Mat Div, Electrochem Soc, Inc, Battery Div, Electrochem Soc, Inc, Energy Technol Div, SOFC Soc Japan, Electrochem Soc, Inc, Dokiya Mem Fund, Plansee SE, Staxera GmbH, Ningbo Inst Mat Technol & Engn ID SOLID-ELECTROLYTE; SPECTROSCOPY AB In this study, the effectiveness of three-point electrode (reference electrode) configuration in correctly dividing the cell impedance into contributions from the two electrodes is investigated using numerical simulations of the electric potential distribution inside typical anode-supported SOFC button cells. A computer code was developed in order to calculate the complex, two dimensional potential field. The apparent electrode impedance measured by a reference electrode is obtained from the potential fields calculated at different frequencies. Impedance calculations show that the reference electrode configuration does not effectively isolate the impedances for the anode and cathode electrodes in an anode-supported cell. The general behavior of the impedance calculations is studied for several cases with different physical parameters such as electrode resistance and capacitance. This study proposes a correction method for the impedance calculations in order to eliminate the errors brought by the cell geometry. C1 [Escobar, J. A.; Pakalapati, S. R.; Celik, I. B.] West Virginia Univ, Dept Mech & Aerosp Engn, Natl Energy Technol Lab, Morgantown, WV 26505 USA. [Finklea, H.] West Virginia Univ, Bennett Dept Chem, Natl Energy Technol Lab, Morgantown, WV 26505 USA. RP Escobar, JA (reprint author), West Virginia Univ, Dept Mech & Aerosp Engn, Natl Energy Technol Lab, Morgantown, WV 26505 USA. FU National Energy Technology Laboratory [DE-AC26-04NT41817] FX This technical effort was performed in support of the National Energy Technology Laboratory's on- going research in the area of Fundamental Transfer Processes in Solid Oxide Fuel Cells under the RDS contract DE-AC26-04NT41817. NR 8 TC 1 Z9 1 U1 0 U2 0 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 S MAIN ST, PENNINGTON, NJ 08534-2839 USA SN 1938-5862 BN 978-1-60768-089-5 J9 ECS TRANSACTIONS PY 2009 VL 25 IS 2 BP 391 EP 400 DI 10.1149/1.3205548 PG 10 WC Electrochemistry; Energy & Fuels SC Electrochemistry; Energy & Fuels GA BA7QO UT WOS:000337724700047 ER PT S AU Tucker, MC Sholklapper, TZ Lau, GY DeJonghe, LC Visco, SJ AF Tucker, Michael C. Sholklapper, Tal Z. Lau, Grace Y. DeJonghe, Lutgard C. Visco, Steven J. BE Singhal, SC Yokokawa, H TI Progress in Metal-Supported SOFCs SO SOLID OXIDE FUEL CELLS 11 (SOFC-XI) SE ECS Transactions LA English DT Proceedings Paper CT 11th International Symposium on Solid Oxide Fuel Cells (SOFC) CY OCT 04-09, 2009 CL Vienna, AUSTRIA SP Electrochem Soc, Inc, High Temp Mat Div, Electrochem Soc, Inc, Battery Div, Electrochem Soc, Inc, Energy Technol Div, SOFC Soc Japan, Electrochem Soc, Inc, Dokiya Mem Fund, Plansee SE, Staxera GmbH, Ningbo Inst Mat Technol & Engn ID OXIDE FUEL-CELLS; ELECTRODES AB Metal-supported SOFCs offer considerable cost and robustness advantages over traditional SOFC designs. In particular, the following topics will be addressed: advantages of the metal-supported design; materials choice for electrolyte and metal support; acceptable operating temperature range; fabrication methods; and degradation mechanisms, including Cr migration, metal oxidation, anode-support interdiffusion, etc. LBNL has demonstrated competitive power density and promising thermal shock and redox cycling tolerance for YSZ-based metal-supported cells. One cell design utilizes infiltrated anode and cathode catalysts coating porous, sintered YSZ electrode backbones. Our early work demonstrated high power density with infiltrated Ni anodes. Maximum power densities of >330 mW/cm(2) and >1000 mW/cm(2) were achieved with air and oxygen, respectively, at 700 degrees C. Ni coarsens rapidly in fuel atmosphere, so we now use more stable oxide-based anode materials. Very promising stability at moderate power density (>200 mW/cm(2)) will be reported, along with an overview of our cell scale-up efforts. C1 [Tucker, Michael C.; Sholklapper, Tal Z.; Lau, Grace Y.; DeJonghe, Lutgard C.; Visco, Steven J.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Tucker, MC (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, MS 62-203,1 Cyclotron Rd, Berkeley, CA 94720 USA. NR 16 TC 9 Z9 9 U1 3 U2 5 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 S MAIN ST, PENNINGTON, NJ 08534-2839 USA SN 1938-5862 BN 978-1-60768-089-5 J9 ECS TRANSACTIONS PY 2009 VL 25 IS 2 BP 673 EP 680 DI 10.1149/1.3205581 PG 8 WC Electrochemistry; Energy & Fuels SC Electrochemistry; Energy & Fuels GA BA7QO UT WOS:000337724700080 ER PT S AU Marina, OA Pederson, LR Coyle, CA Thomsen, EC Coffey, GW AF Marina, O. A. Pederson, L. R. Coyle, C. A. Thomsen, E. C. Coffey, G. W. BE Singhal, SC Yokokawa, H TI Ni/YSZ Anode Interactions with Impurities in Coal Gas SO SOLID OXIDE FUEL CELLS 11 (SOFC-XI) SE ECS Transactions LA English DT Proceedings Paper CT 11th International Symposium on Solid Oxide Fuel Cells (SOFC) CY OCT 04-09, 2009 CL Vienna, AUSTRIA SP Electrochem Soc, Inc, High Temp Mat Div, Electrochem Soc, Inc, Battery Div, Electrochem Soc, Inc, Energy Technol Div, SOFC Soc Japan, Electrochem Soc, Inc, Dokiya Mem Fund, Plansee SE, Staxera GmbH, Ningbo Inst Mat Technol & Engn AB Performance of solid oxide fuel cell (SOFC) with nickel/zirconia anodes on synthetic coal gas in the presence of low levels of phosphorus, arsenic, selenium, sulfur, hydrogen chloride, and antimony impurities were evaluated. The presence of phosphorus and arsenic led to the slow and irreversible SOFC degradation due to the formation of secondary phases with nickel, particularly close to the gas inlet. Phosphorus and antimony surface adsorption layers were identified as well. Hydrogen chloride and sulfur interactions with the nickel were limited to the surface adsorption only, whereas selenium exposure also led to the formation of nickel selenide for highly polarized cells. C1 [Marina, O. A.; Pederson, L. R.; Coyle, C. A.; Thomsen, E. C.; Coffey, G. W.] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Marina, OA (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. NR 3 TC 9 Z9 9 U1 0 U2 0 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 S MAIN ST, PENNINGTON, NJ 08534-2839 USA SN 1938-5862 BN 978-1-60768-089-5 J9 ECS TRANSACTIONS PY 2009 VL 25 IS 2 BP 2125 EP 2130 DI 10.1149/1.3205760 PG 6 WC Electrochemistry; Energy & Fuels SC Electrochemistry; Energy & Fuels GA BA7QO UT WOS:000337724700258 ER PT S AU Zhou, XD Anderson, HU AF Zhou, Xiao-Dong Anderson, Harlan U. BE Singhal, SC Yokokawa, H TI A Global Defect Chemistry Model for p-Type Mixed Ionic and Electronic Conductors SO SOLID OXIDE FUEL CELLS 11 (SOFC-XI) SE ECS Transactions LA English DT Proceedings Paper CT 11th International Symposium on Solid Oxide Fuel Cells (SOFC) CY OCT 04-09, 2009 CL Vienna, AUSTRIA SP Electrochem Soc, Inc, High Temp Mat Div, Electrochem Soc, Inc, Battery Div, Electrochem Soc, Inc, Energy Technol Div, SOFC Soc Japan, Electrochem Soc, Inc, Dokiya Mem Fund, Plansee SE, Staxera GmbH, Ningbo Inst Mat Technol & Engn ID ELECTRICAL-CONDUCTIVITY; SEEBECK COEFFICIENT; NEUTRON-DIFFRACTION AB A global defect chemistry model is presented to relate the properties of a variety of p-type perovskite conductors, including chromites, manganites, and ferrites, which can be tailored as mixed ionic and electronic conductors (MIECs). It is found that oxygen nonstoichiometry in these p-type MIECs can be correlated using reaction constant for oxygen vacancy generation. The values of reaction constant for oxygen vacancy formation can be obtained by simulating the electronic conductivity as a function of oxygen activity and temperature with the existing global model that is based on the concept of localized electron holes. The global defect chemistry model allows us to better understand and predict the electrochemical properties of perovskite type p-type conductors. C1 [Zhou, Xiao-Dong] Pacific NW Natl Lab, Energy & Environm Directorate, Richland, WA 99352 USA. [Anderson, Harlan U.] Missouri Univ Sci & Tech, Dept Mat Sci & Engn, Rolla, MO 65401 USA. RP Zhou, XD (reprint author), Pacific NW Natl Lab, Energy & Environm Directorate, Richland, WA 99352 USA. FU Department of Energy; Gas Research Institute and Praxair, Inc. FX The authors wish to thank the Department of Energy, the Gas Research Institute and Praxair, Inc., who provided financial support for part of this research. NR 17 TC 4 Z9 4 U1 0 U2 1 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 S MAIN ST, PENNINGTON, NJ 08534-2839 USA SN 1938-5862 BN 978-1-60768-089-5 J9 ECS TRANSACTIONS PY 2009 VL 25 IS 2 BP 2807 EP 2814 DI 10.1149/1.3205843 PG 8 WC Electrochemistry; Energy & Fuels SC Electrochemistry; Energy & Fuels GA BA7QO UT WOS:000337724700341 ER PT B AU Yang, ZG Fergus, JW AF Yang, Zhenguo (Gary) Fergus, Jeffrey W. BE Fergus, JW Hui, R Li, X Wilkinson, DP Zhang, J TI Interconnects SO SOLID OXIDE FUEL CELLS: MATERIALS PROPERTIES AND PERFORMANCE SE Green Chemistry and Chemical Engineering LA English DT Article; Book Chapter ID OXIDE FUEL-CELLS; DOPED LANTHANUM CHROMITE; HIGH-TEMPERATURE OXIDATION; FERRITIC STAINLESS-STEEL; SOFC STACK CONDITIONS; EFFUSION MASS-SPECTROMETRY; SEALANT-ALLOY COMBINATIONS; THERMAL-EXPANSION BEHAVIOR; GLASS-CERAMIC SEALANTS; PEROVSKITE-TYPE OXIDES C1 [Yang, Zhenguo (Gary)] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Yang, ZG (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. NR 240 TC 79 Z9 79 U1 0 U2 2 PU CRC PRESS-TAYLOR & FRANCIS GROUP PI BOCA RATON PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA BN 978-1-4200-8883-0 J9 GREEN CHEM CHEM ENG PY 2009 BP 179 EP 212 PG 34 WC Energy & Fuels; Engineering, Chemical SC Energy & Fuels; Engineering GA BKE95 UT WOS:000267921000004 ER PT B AU Lessing, PA Hartvigsen, J Elangovan, S AF Lessing, P. A. Hartvigsen, J. Elangovan, S. BE Fergus, JW Hui, R Li, X Wilkinson, DP Zhang, J TI Sealants SO SOLID OXIDE FUEL CELLS: MATERIALS PROPERTIES AND PERFORMANCE SE Green Chemistry and Chemical Engineering LA English DT Article; Book Chapter ID OXIDE FUEL-CELLS; COMPRESSIVE SEALS; SOFC STACKS; TEMPERATURE C1 [Lessing, P. A.] Idaho Natl Lab, Idaho Falls, ID 83415 USA. [Hartvigsen, J.; Elangovan, S.] Ceramatec Inc, Salt Lake City, UT 84119 USA. RP Lessing, PA (reprint author), Idaho Natl Lab, Idaho Falls, ID 83415 USA. NR 35 TC 2 Z9 2 U1 0 U2 0 PU CRC PRESS-TAYLOR & FRANCIS GROUP PI BOCA RATON PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA BN 978-1-4200-8883-0 J9 GREEN CHEM CHEM ENG PY 2009 BP 213 EP 237 PG 25 WC Energy & Fuels; Engineering, Chemical SC Energy & Fuels; Engineering GA BKE95 UT WOS:000267921000005 ER PT S AU Chang, KC Ingram, B Kavaipatti, B Yildiz, B Hennessy, D Salvador, P Leyarovska, N You, H AF Chang, Kee-Chul Ingram, Brian Kavaipatti, Balasubramaniam Yildiz, Bilge Hennessy, Daniel Salvador, Paul Leyarovska, Nadia You, Hoydoo BE Traversa, E Armstrong, TR Eguchi, K Palacin, MR TI In situ Synchrotron X-ray Studies of Dense Thin-Film Strontium-Doped Lanthanum Manganite Solid Oxide Fuel Cell Cathodes SO SOLID-STATE IONICS-2008 SE Materials Research Society Symposium Proceedings LA English DT Proceedings Paper CT Symposium on Solid-State Ionics held at the 2008 MRS Fall Meeting CY DEC 01-05, 2008 CL Boston, MA SP Mat Res Soc ID NONSTOICHIOMETRY; REDUCTION; BEHAVIOR; LAMNO3; OXYGEN AB Using a model cathode-electrolyte system composed of epitaxial thin-films of La(1-x)Sr(x)MnO(3-delta) (LSM) on single crystal yttria-stabilized zirconia (YSZ), we investigated changes of the cation concentration profile in the LSM during heating and under applied potential using grazing incidence x-rays. Pulsed laser deposition (PLD) was used to grow epitaxial LSM(011) on YSZ(111). At room temperature, we find that Sr segregates to form Sr enriched nanoparticles. When the sample heated to 700 degrees C, Sr is slowly reincorporated into the film. We also find different amounts of Sr segregation as the X-ray beam is moved across the sample. The variation in the amount of Sr segregation is greater oil the sample that has been subject to 72 hours of applied potential, suggesting that the electrochemistry plays a role in the Sr segregation. C1 [Chang, Kee-Chul; Hennessy, Daniel; You, Hoydoo] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Chang, KC (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Hennessy, Daniel/A-6203-2011; Chang, Kee-Chul/O-9938-2014; You, Hoydoo/A-6201-2011 OI Chang, Kee-Chul/0000-0003-1775-2148; You, Hoydoo/0000-0003-2996-9483 NR 7 TC 5 Z9 5 U1 0 U2 9 PU MATERIALS RESEARCH SOCIETY PI WARRENDALE PA 506 KEYSTONE DRIVE, WARRENDALE, PA 15088-7563 USA SN 0272-9172 BN 978-1-60511-098-1 J9 MATER RES SOC SYMP P PY 2009 VL 1126 BP 27 EP 32 PG 6 WC Electrochemistry; Materials Science, Multidisciplinary; Physics, Condensed Matter SC Electrochemistry; Materials Science; Physics GA BJJ43 UT WOS:000266423900004 ER PT S AU Brinkman, KS Iijima, T Takamura, H AF Brinkman, Kyle S. Iijima, Takashi Takamura, Hitoshi BE Traversa, E Armstrong, TR Eguchi, K Palacin, MR TI The Thickness Dependence of Oxygen Permeability in Sol-Gel Derived Ce(0.8)Gd(0.2)O(2-delta)-CoFe(2)O(4) Thin Films on Porous Ceramic Substrates: A Sputtered "Blocking" Layer for Thickness Control SO SOLID-STATE IONICS-2008 SE Materials Research Society Symposium Proceedings LA English DT Proceedings Paper CT Symposium on Solid-State Ionics held at the 2008 MRS Fall Meeting CY DEC 01-05, 2008 CL Boston, MA SP Mat Res Soc ID PERMEATION PROPERTIES; MEMBRANE AB Mixed conductive oxides are a topic of interest for applications in oxygen separation membranes as well as use in producing hydrogen fuel through the partial oxidation of methane. The oxygen flux through the membranes is governed both by the oxygen ionic conductivity as well as the material's electronic conductivity; composite membranes like Ce(0.8)Gd(0.2)O(2-delta)(CGO)-CoFe(2)O(4) (CFO) use gadolinium doped ceria oxides as the ionic conducting material combined with cobalt iron spinel which serves as the electronic conductor. In this study we employ similar to 50 nm sputtered CeO(2) layers on the surface of porous CGO ceramic substrates which serve as solution "blocking" layers during the thin film fabrication process facilitating the control of film thickness. Films with thickness of similar to 2 and 4 microns were prepared by depositing 40 and 95 separate sol-gel layers respectively. Oxygen flux measurements indicated that the permeation increased with decreasing membrane thickness; thin film membrane with thickness on the micron level showed flux values an order of magnitude greater (0.03 mu mol/cm(2) s) at 800 degrees C as compared to 1mm thick bulk ceramic membranes (0.003 mu mol/cm(2)). C1 [Brinkman, Kyle S.] Savannah River Natl Lab SRNL, Mat Sci & Technol Directorate, Aiken, SC 29808 USA. RP Brinkman, KS (reprint author), Savannah River Natl Lab SRNL, Mat Sci & Technol Directorate, Aiken, SC 29808 USA. RI Takamura, Hitoshi/B-9514-2014; OI Takamura, Hitoshi/0000-0002-4841-4582; Brinkman, Kyle/0000-0002-2219-1253 NR 10 TC 1 Z9 1 U1 0 U2 2 PU MATERIALS RESEARCH SOCIETY PI WARRENDALE PA 506 KEYSTONE DRIVE, WARRENDALE, PA 15088-7563 USA SN 0272-9172 BN 978-1-60511-098-1 J9 MATER RES SOC SYMP P PY 2009 VL 1126 BP 145 EP 151 PG 7 WC Electrochemistry; Materials Science, Multidisciplinary; Physics, Condensed Matter SC Electrochemistry; Materials Science; Physics GA BJJ43 UT WOS:000266423900021 ER PT S AU Brinkman, KS Fox, EB Korinko, P Adams, T Jurgensen, A AF Brinkman, Kyle S. Fox, Elise B. Korinko, Paul Adams, Thad Jurgensen, Arthur BE Traversa, E Armstrong, TR Eguchi, K Palacin, MR TI The Impact of Partial Crystallization on the Permeation Properties Bulk Amorphous Glass Hydrogen Separation Membranes SO SOLID-STATE IONICS-2008 SE Materials Research Society Symposium Proceedings LA English DT Proceedings Paper CT Symposium on Solid-State Ionics held at the 2008 MRS Fall Meeting CY DEC 01-05, 2008 CL Boston, MA SP Mat Res Soc ID ALLOY AB It is recognized that hydrogen separation membranes are a key component of the emerging hydrogen economy. A potentially exciting material for membrane separations are bulk metallic glass materials due to their low cost, high elastic toughness and resistance to hydrogen "embrittlement" as compared to crystalline Pd-based membrane systems. However, at elevated temperatures and extended operation times structural changes including partial crystallinity may appear in these amorphous metallic systems. A systematic evaluation of the impact of partial crystallinity/devitrification on the diffusion and solubility behavior in multi-component Metallic Glass materials would provide great insight into the potential of these materials for hydrogen applications. This study will report on the development of time and temperature crystallization mapping and their use for interpretation of "in-situ" hydrogen permeation at elevated temperatures. C1 [Brinkman, Kyle S.; Fox, Elise B.; Korinko, Paul; Adams, Thad] Savannah River Natl Lab SRNL, Mat Sci & Technol Directorate, Aiken, SC 29808 USA. RP Brinkman, KS (reprint author), Savannah River Natl Lab SRNL, Mat Sci & Technol Directorate, Aiken, SC 29808 USA. OI Brinkman, Kyle/0000-0002-2219-1253 NR 11 TC 0 Z9 0 U1 0 U2 1 PU MATERIALS RESEARCH SOCIETY PI WARRENDALE PA 506 KEYSTONE DRIVE, WARRENDALE, PA 15088-7563 USA SN 0272-9172 BN 978-1-60511-098-1 J9 MATER RES SOC SYMP P PY 2009 VL 1126 BP 153 EP 159 PG 7 WC Electrochemistry; Materials Science, Multidisciplinary; Physics, Condensed Matter SC Electrochemistry; Materials Science; Physics GA BJJ43 UT WOS:000266423900022 ER PT J AU Mincher, B Modolo, G Mezyk, S AF Mincher, Bruce J. Modolo, Giuseppe Mezyk, Stephen P. TI Review Article: The Effects of Radiation Chemistry on Solvent Extraction: 1. Conditions in Acidic Solution and a Review of TBP Radiolysis SO SOLVENT EXTRACTION AND ION EXCHANGE LA English DT Review DE Actinide extraction; free radicals; radiation chemistry; solvent extraction; tributyl phosphate ID DILUENT DEGRADATION PRODUCTS; GAS-LIQUID-CHROMATOGRAPHY; ELECTRON-SPIN-RESONANCE; NORMAL-BUTYL PHOSPHATE; NITRIC-ACID; TRIBUTYL-PHOSPHATE; PULSE-RADIOLYSIS; RATE CONSTANTS; AQUEOUS-SOLUTIONS; HYDROXAMIC ACIDS AB The partitioning of the long-lived -emitters and high-yield fission products from dissolved nuclear fuel are key components of processes envisioned for the recycling of nuclear fuel and the disposition of high-level waste. These future processes will likely be based on aqueous solvent-extraction technologies for light-water reactor fuel and consist of four main components for the separation of uranium, fission products, group trivalent actinides, and lanthanides, and finally the separation of the trivalent actinides from the lanthanides. Since the solvent systems will be in contact with highly radioactive solutions, they must be robust toward radiolytic degradation in an irradiated mixed organic, acidic aqueous environment. Therefore, an understanding of their radiation chemistry is important to the design of a practical system. In this paper we review the radiolytic production of the reactive species expected to be present in such an irradiated system and predict which radiolytically-produced species are available for reaction with solvent extraction ligands. We then review the literature on the radiation chemistry of tributyl phosphate, the ligand used in uranium extraction in the first step in the series of four extractions proposed for the new fuel cycle. C1 [Mincher, Bruce J.] Idaho Natl Lab, Aqueous Separat & Radiochem Dept, Idaho Falls, ID 83415 USA. [Modolo, Giuseppe] Forschungszentrum Julich, Inst Energy Res Safety Res & Reactor Technol, D-52425 Julich, Germany. [Mezyk, Stephen P.] Calif State Univ Long Beach, Dept Chem & Biochem, Long Beach, CA 90840 USA. RP Mincher, B (reprint author), Idaho Natl Lab, Aqueous Separat & Radiochem Dept, POB 1625, Idaho Falls, ID 83415 USA. EM bruce.mincher@inl.gov RI Mincher, Bruce/C-7758-2017; OI Modolo, Giuseppe/0000-0001-6490-5595 NR 113 TC 70 Z9 71 U1 3 U2 66 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 0736-6299 J9 SOLVENT EXTR ION EXC JI Solvent Extr. Ion Exch. PY 2009 VL 27 IS 1 BP 1 EP 25 AR PII 907425322 DI 10.1080/07366290802544767 PG 25 WC Chemistry, Multidisciplinary SC Chemistry GA 391QQ UT WOS:000262248200001 ER PT J AU Delmau, LH Haverlock, TJ Bazelaire, E Bonnesen, PV Ditto, ME Moyer, BA AF Delmau, Ltitia H. Haverlock, Tamara J. Bazelaire, Eve Bonnesen, Peter V. Ditto, Mary E. Moyer, Bruce A. TI Alternatives to Nitric Acid Stripping in the Caustic-Side Solvent Extraction (CSSX) Process for Cesium Removal from Alkaline High-Level Waste SO SOLVENT EXTRACTION AND ION EXCHANGE LA English DT Article ID TANK WASTE; AQUEOUS-SOLUTIONS; CROWN COMPOUNDS; NITRATE; 1,2-DICHLOROETHANE; SEPARATION; EQUILIBRIUM; MODIFIERS; STRONTIUM; ETHERS AB Effective alternatives to nitric acid stripping in the Caustic-Side Solvent Extraction (CSSX) solvent have been demonstrated in this work. The CSSX solvent employs calix[4]arene-bis(tert-octylbenzo-18-crown-6) (BOBCalixC6) as the cesium extractant in a modified alkane diluent for decontamination of alkaline high-level wastes, such as those found at the Savannah River and Hanford sites. Results reported in this paper support the idea that replacement of the nitrate anion by a much more hydrophilic anion like borate can substantially lower cesium distribution ratios on stripping. Without any other change in the CSSX flowsheet, however, the use of a boric acid stripping solution in place of the 1mM nitric acid solution used in the CSSX process marginally, though perhaps still usefully, improves stripping. The less-than-expected improvement was explained by the carryover of nitrate from scrubbing into stripping. Accordingly, more effective stripping is obtained after a scrub of the solvent with 0.1M sodium hydroxide. Functional alternatives to boric acid include sodium bicarbonate or cesium hydroxide as strip solutions. Profound stripping improvement is achieved when trioctylamine, one of the components of the CSSX solvent, is replaced with a commercial guanidine reagent (LIX 79). The more basic guanidine affords greater latitude in the selection of aqueous conditions in that it becomes protonated even at mildly alkaline pH values. Under process-relevant conditions, cesium distribution ratios on stripping are approximately 100-fold lower compared with the current CSSX performance. The tolerance to surfactants is good, and the extraction properties of the solvent remain unchanged over three successive extract-scrub-strip cycles. From the point of view of compatibility with downstream processing, boric acid represents an attractive stripping agent, as it is also a potentially ideal feed for borosilicate vitrification of the separated 137Cs product stream. The possibilities for use of these results toward a dramatically better next-generation CSSX process, possibly one employing the more soluble cesium extractant calix[4]arene-bis(2-ethylhexylbenzo-18-crown-6) (BEHBCalixC6) are discussed. C1 [Delmau, Ltitia H.; Haverlock, Tamara J.; Bazelaire, Eve; Bonnesen, Peter V.; Ditto, Mary E.; Moyer, Bruce A.] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RP Moyer, BA (reprint author), Oak Ridge Natl Lab, Div Chem Sci, MS-6119-4500S,POB 2008, Oak Ridge, TN 37831 USA. EM moyerba@oml.gov RI Bonnesen, Peter/A-1889-2016; Moyer, Bruce/L-2744-2016 OI Bonnesen, Peter/0000-0002-1397-8281; Moyer, Bruce/0000-0001-7484-6277 FU Environmental Management Science Program of the Offices of Science and Environmental Management; U.S. Department of Energy [DE-AC05-00OR22725]; Oak Ridge National Laboratory FX The authors are grateful to Cognis Corporation for the gift of a sample of LIX 79 and for information on the identity of the guanidine active ingredient. This research was sponsored by the Environmental Management Science Program of the Offices of Science and Environmental Management, U.S. Department of Energy, under contract number DE-AC05-00OR22725 with the Oak Ridge National Laboratory, managed by UT-Battelle, LLC. NR 54 TC 11 Z9 11 U1 2 U2 10 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 0736-6299 J9 SOLVENT EXTR ION EXC JI Solvent Extr. Ion Exch. PY 2009 VL 27 IS 2 BP 172 EP 198 AR PII 909031718 DI 10.1080/07366290802672394 PG 27 WC Chemistry, Multidisciplinary SC Chemistry GA 412HS UT WOS:000263716500005 ER PT J AU Tranter, TJ Vereshchagina, TA Utgikar, V AF Tranter, T. J. Vereshchagina, T. A. Utgikar, V. TI An Inorganic Microsphere Composite for the Selective Removal of 137Cesium from Acidic Nuclear Waste Solutions. 1: Equilibrium Capacity and Kinetic Properties of the Sorbent SO SOLVENT EXTRACTION AND ION EXCHANGE LA English DT Article DE Cesium-137; ammonium molybdophosphate; microsphere; cenosphere; ion-exchange; nuclear waste ID EXCHANGERS AB A new inorganic ion exchange composite consisting of ammonium molybdophosphate, (NH4)3P(Mo3O10)43H2O (AMP), synthesized within hollow aluminosilicate microspheres (AMP-C) has been developed. Two different batches of the sorbent were produced resulting in 20% and 25% AMP loading for two and three loading cycles, respectively. The selective cesium exchange capacity of this inorganic composite was evaluated using simulated sodium bearing waste solution as a surrogate for the acidic tank waste currently stored at the Idaho National Laboratory (INL). Equilibrium isotherms obtained from these experiments were very favorable for cesium uptake and indicated maximum cesium loading of approximately 9% by weight of dry AMP. Batch kinetic experiments were also performed to obtain the necessary data to estimate the effective diffusion coefficient for cesium in the sorbent particle. These experiments resulted in effective intraparticle cesium diffusivity coefficients of 4.99 10-8cm2/min and 4.72 10-8cm2/min for the 20% and 25% AMP-C material, respectively. C1 [Tranter, T. J.] Idaho Natl Lab, Idaho Falls, ID 83415 USA. [Vereshchagina, T. A.] Inst Chem & Chem Technol, Krasnoyarsk, Russia. [Utgikar, V.] Univ Idaho, Dept Chem Engn, Moscow, ID 83843 USA. RP Tranter, TJ (reprint author), Idaho Natl Lab, Idaho Falls, ID 83415 USA. EM troy.tranter@INL.gov RI Vereshchagina, Tatiana/A-5764-2014 OI Vereshchagina, Tatiana/0000-0003-4538-8902 FU U.S. Department of Energy [DE-AC07-05ID14517] FX Work performed for the U.S. Department of Energy under Contract No. DE-AC07-05ID14517. NR 23 TC 14 Z9 15 U1 1 U2 5 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 0736-6299 J9 SOLVENT EXTR ION EXC JI Solvent Extr. Ion Exch. PY 2009 VL 27 IS 2 BP 199 EP 218 AR PII 909037122 DI 10.1080/07366290802674549 PG 20 WC Chemistry, Multidisciplinary SC Chemistry GA 412HS UT WOS:000263716500006 ER PT J AU Tranter, TJ Vereshchagina, TA Utgikar, V AF Tranter, T. J. Vereshchagina, T. A. Utgikar, V. TI An Inorganic Microsphere Composite for the Selective Removal of 137Cesium from Acidic Nuclear Waste Solutions. 2: Bench-Scale Column Experiments, Modeling, and Preliminary Process Design SO SOLVENT EXTRACTION AND ION EXCHANGE LA English DT Article DE Cesium-137; ammonium molybdophosphate; microsphere; cenosphere; ion-exchange; nuclear waste AB A new inorganic ion exchange composite for removing radioactive cesium from acidic waste streams has been developed. The new material consists of ammonium molybdophosphate, (NH4)3P(Mo3O10)43H2O (AMP), synthesized within hollow aluminosilicate microspheres (AMP-C), which are produced as a by-product from coal combustion. The selective cesium exchange capacity of this inorganic composite was evaluated in bench-scale column tests using simulated sodium bearing waste solution as a surrogate for the acidic tank waste currently stored at the Idaho National Laboratory (INL). Total cesium loading on the columns at saturation agreed very well with equilibrium values predicted from isotherm experiments performed previously. A numerical algorithm for solving the governing partial differential equations (PDE) for cesium uptake was developed using the intraparticle mass transfer coefficient obtained from previous batch kinetic experiments. Solutions to the governing equations were generated to obtain the cesium concentration at the column effluent as a function of throughput volume using the same conditions as those used for the actual column experiments. The numerical solutions of the PDE fit the column break through data quite well for all the experimental conditions in the study. The model should therefore provide a reliable prediction of column performance at larger scales. C1 [Tranter, T. J.] Idaho Natl Lab, Idaho Falls, ID 83415 USA. [Vereshchagina, T. A.] Inst Chem & Chem Technol, Krasnoyarsk, Russia. [Utgikar, V.] Univ Idaho, Dept Chem Engn, Moscow, ID 83843 USA. RP Tranter, TJ (reprint author), Idaho Natl Lab, Idaho Falls, ID 83415 USA. EM troy.tranter@INL.gov RI Vereshchagina, Tatiana/A-5764-2014 OI Vereshchagina, Tatiana/0000-0003-4538-8902 FU U.S. Department of Energy [DE-AC07-05ID14517] FX Work performed for the U.S. Department of Energy under Contract No. DE-AC07-05ID14517. NR 13 TC 7 Z9 8 U1 0 U2 2 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 0736-6299 J9 SOLVENT EXTR ION EXC JI Solvent Extr. Ion Exch. PY 2009 VL 27 IS 2 BP 219 EP 243 AR PII 909012252 DI 10.1080/07366290802674572 PG 25 WC Chemistry, Multidisciplinary SC Chemistry GA 412HS UT WOS:000263716500007 ER PT J AU Mincher, BJ Modolo, G Mezyk, SP AF Mincher, Bruce J. Modolo, Giuseppe Mezyk, Stephen P. TI Review Article: The Effects of Radiation Chemistry on Solvent Extraction: 2. A Review of Fission-Product Extraction SO SOLVENT EXTRACTION AND ION EXCHANGE LA English DT Review DE Calixarenes; crown ethers; fission product extraction; free radicals; G-values; radiation chemistry; solvent extraction ID DICYCLOHEXANO-18-CROWN-6 ETHER DCH18C6; EARTH METAL CHLORIDES; GAMMA-RADIOLYSIS; CROWN-ETHERS; 77 K; RADIOCHEMICAL STABILITY; 15-CROWN-5 COMPLEXES; HYDROXYL RADICALS; MASS-SPECTROMETRY; AQUEOUS-SOLUTION AB The partitioning of the long-lived -emitters and the high-yield fission products from dissolved nuclear fuel is a key component of processes envisioned for the safe recycling of nuclear fuel and the disposition of high-level waste. These future processes will likely be based on aqueous solvent-extraction technologies for light-water reactor fuel and consist of four main components for the separation of uranium, fission products, and group trivalent actinides and lanthanides and separation of trivalent actinides from lanthanides. Since the solvent systems will be in contact with highly radioactive solutions, they must be robust toward radiolytic degradation in an irradiated, mixed organic and aqueous acidic environment. Therefore, an understanding of their radiation chemistry is important to the design of a practical system. In a previous paper, we reviewed the radiation chemistry of irradiated aqueous nitric acid and the tributyl phosphate ligand used for uranium extraction in the first step of the series of four extractions. In this paper, we review the radiation chemistry of the ligands proposed for use in the second extraction of cesium and strontium fission products. This includes not only the crown ethers and calixarenes but also cobalt dicarbollide and polyethylene glycol. Since many disparate units have been applied for measuring absorbed radiation dose in the literature, we also present a discussion of that topic and provide conversion factors. C1 [Mincher, Bruce J.] Idaho Natl Lab, Aqueous Separat & Radiochem Dept, Idaho Falls, ID 83415 USA. [Modolo, Giuseppe] Forschungszentrum Julich, Inst Energy Res Safety Res & Reactor Technol, D-52425 Julich, Germany. [Mezyk, Stephen P.] Calif State Univ Long Beach, Dept Chem & Biochem, Long Beach, CA 90840 USA. RP Mincher, B (reprint author), Idaho Natl Lab, Aqueous Separat & Radiochem Dept, POB 1625, Idaho Falls, ID 83415 USA. EM bruce.mincher@inl.gov RI Mincher, Bruce/C-7758-2017; OI Modolo, Giuseppe/0000-0001-6490-5595 NR 58 TC 32 Z9 32 U1 4 U2 46 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 0736-6299 J9 SOLVENT EXTR ION EXC JI Solvent Extr. Ion Exch. PY 2009 VL 27 IS 3 BP 331 EP 353 AR PII 910376516 DI 10.1080/07366290902821263 PG 23 WC Chemistry, Multidisciplinary SC Chemistry GA 434ZS UT WOS:000265313500001 ER PT J AU Mincher, BJ Modolo, G Mezyk, SP AF Mincher, Bruce J. Modolo, Giuseppe Mezyk, Stephen P. TI Review Article: The Effects of Radiation Chemistry on Solvent Extraction 3: A Review of Actinide and Lanthanide Extraction SO SOLVENT EXTRACTION AND ION EXCHANGE LA English DT Review DE Actinide extraction; amides; free radicals; G-values; lanthanide extraction; organophosphorus; radiation chemistry ID DIISODECYL PHOSPHORIC-ACID; PUREX PROCESS CONDITIONS; HIGH-LEVEL WASTE; RADIOLYTIC DEGRADATION; FISSION-PRODUCTS; DI-(2-ETHYLHEXYL)PHOSPHORIC ACID; DI(2-ETHYLHEXYL)PHOSPHORIC ACID; SUBSTITUTED AMIDES; PULSE-RADIOLYSIS; CARBOXYLIC-ACIDS AB The partitioning of the long-lived -emitters and the high-yield fission products from dissolved used nuclear fuel is a key component of processes envisioned for the safe recycling of used nuclear fuel and the disposition of high-level waste. These future processes will likely be based on aqueous solvent-extraction technologies for light-water reactor fuel and consist of four main components for the sequential separation of uranium, fission products, group trivalent actinides, and lanthanides, and then trivalent actinides from lanthanides. Since the solvent systems will be in contact with highly radioactive solutions, they must be robust toward radiolytic degradation in an irradiated mixed organic/aqueous acidic environment, with the formation of only benign degradation products. Therefore, an understanding of their radiation chemistry is important to the design of a practical system. In the first paper in this series, we reviewed the radiation chemistry of irradiated aqueous nitric acid and the tributyl phosphate ligand for uranium extraction in the first step of these extractions. In the second, we reviewed the radiation chemistry of the ligands proposed for use in the extraction of cesium and strontium fission products. Here, we review the radiation chemistry of the ligands that might be used for the group extraction of the lanthanides and actinides. This includes traditional organophosphorus reagents such as CMPO and HDEHP, as well as novel reagents such as the amides and diamides currently being investigated. C1 [Mincher, Bruce J.] Idaho Natl Lab, Aqueous Separat & Radiochem Dept, Idaho Falls, ID 83415 USA. [Modolo, Giuseppe] KFA Julich GmbH, Forschungszentrum, Inst Energy Res Safety Res & Reactor Technol, Julich, Germany. [Mezyk, Stephen P.] Calif State Univ Long Beach, Dept Chem & Biochem, Long Beach, CA 90840 USA. RP Mincher, B (reprint author), Idaho Natl Lab, Aqueous Separat & Radiochem Dept, POB 1625, Idaho Falls, ID 83415 USA. EM bruce.mincher@inl.gov RI Mincher, Bruce/C-7758-2017; OI Modolo, Giuseppe/0000-0001-6490-5595 NR 77 TC 45 Z9 45 U1 7 U2 92 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 0736-6299 J9 SOLVENT EXTR ION EXC JI Solvent Extr. Ion Exch. PY 2009 VL 27 IS 5-6 BP 579 EP 606 AR PII 916726992 DI 10.1080/07366290903114098 PG 28 WC Chemistry, Multidisciplinary SC Chemistry GA 524IV UT WOS:000272137900001 ER PT J AU Meridiano, Y Berthon, L Crozes, X Sorel, C Dannus, P Antonio, MR Chiarizia, R Zemb, T AF Meridiano, Y. Berthon, L. Crozes, X. Sorel, C. Dannus, P. Antonio, M. R. Chiarizia, R. Zemb, T. TI Aggregation in Organic Solutions of Malonamides: Consequences for Water Extraction SO SOLVENT EXTRACTION AND ION EXCHANGE LA English DT Article DE DIAMEX process; malonamides; aggregation; liquid-liquid extraction; VPO; water extraction; supramolecular speciation ID 3RD PHASE-FORMATION; HIGH ACTIVE CONCENTRATE; NITRIC-ACID EXTRACTION; N-DODECANE SYSTEM; F-ELEMENT CATIONS; DIALKYLPHOSPHORIC ACID; SOLVENT-EXTRACTION; AQUEOUS-SOLUTIONS; BUTYL PHOSPHATE; TBP AB The molecular organization of N,N'-dimethyl-N,N'-dioctylhexylethoxymalonamide (DMDOHEMA), the current reference extractant for the DIAMEX (DIAMide EXtraction) process, is correlated with its water extraction properties from neutral media. The aggregation of DMDOHEMA in n-heptane was investigated by vapor pressure osmometry (VPO) and the aggregate speciation characterized by combined small-angle neutron and X-ray scattering (SANS and SAXS, respectively). Two approaches were taken to model the aggregation of the diamide and the water extraction as a function of the diamide concentration by taking into account a single aggregation equilibrium with an average aggregation number N equal to 4.28 +/- 0.05; and a competition between two types of aggregates in the organic phase, namely, aggregates of the reverse micelle type with 4 diamides per aggregate, and an oligomeric structure composed of about 10 diamide molecules which appears at high extractant concentration (1mol/L). In both cases, the supramolecular speciation representing the monomers/aggregates distribution was determined, and for each supramolecular organization, a solubilization parameter was calculated using the Sergievskii-Dannus relationship. Thus, the correlation between the two types of micellization of the diamide and the extraction of water into the organic phase was demonstrated. The larger aggregates can extract about five times more water than monomers. C1 [Meridiano, Y.; Berthon, L.; Crozes, X.; Sorel, C.] CEA ValRho, DEN DRCP SCPS LCSE, F-30207 Bagnols Sur Ceze, France. [Dannus, P.] CEA Saclay, INSTN UEIN, F-91191 Gif Sur Yvette, France. [Antonio, M. R.; Chiarizia, R.] Argonne Natl Lab, CSE Div, Argonne, IL 60439 USA. [Zemb, T.] CEA CNRS UM2 ENSCM, Inst Chin Separat Marcoule, Bagnols Sur Ceze, France. RP Berthon, L (reprint author), CEA ValRho, DEN DRCP SCPS LCSE, F-30207 Bagnols Sur Ceze, France. EM laurence.berthon@cea.fr RI BERTHON, Laurence/B-1374-2016; SOREL, Christian/B-5947-2016 OI BERTHON, Laurence/0000-0003-3474-8474; SOREL, Christian/0000-0003-1580-2236 FU U. S. Department of Energy; Office of Basic Energy Science, Division of Chemical Sciences, Biosciences, and Geosciences [DE-AC02-06CH11357] FX The authors are grateful to Bruno Deme, local contact at the D16 instrument (ILL, Grenoble, France), for his time and his help during the SANS acquisitions. We thank Dr. S. Seifert (Argonne National Laboratory) for generous assistance with the SAXS measurements. The part of this work performed at the Argonne National Laboratory benefited from the use of the 12-ID facility at the Advanced Photon Source and was supported by the U. S. Department of Energy, Office of Basic Energy Science, Division of Chemical Sciences, Biosciences, and Geosciences, under contract No DE-AC02-06CH11357. NR 50 TC 37 Z9 37 U1 3 U2 29 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 0736-6299 J9 SOLVENT EXTR ION EXC JI Solvent Extr. Ion Exch. PY 2009 VL 27 IS 5-6 BP 607 EP 637 AR PII 916728104 DI 10.1080/07366290903270148 PG 31 WC Chemistry, Multidisciplinary SC Chemistry GA 524IV UT WOS:000272137900002 ER PT S AU Goldhaber, G AF Goldhaber, Gerson BE Cline, DB TI The Acceleration of the Expansion of the Universe: A Brief Early History of the Supernova Cosmology Project (SCP) SO SOURCES AND DETECTION OF DARK MATTER AND DARK ENERGY IN THE UNIVERSE SE AIP Conference Proceedings LA English DT Proceedings Paper CT 8th UCLA Symposium on Sources and Detection of Dark Matter and Dark Energy in the Universe CY FEB 20-22, 2008 CL Marina del Rey, CA SP Univ Calif Los Angeles ID MICROWAVE BACKGROUND-RADIATION; IA SUPERNOVAE; INFLATIONARY UNIVERSE; K-CORRECTIONS; LIGHT CURVES; CONSTANT; REDSHIFT; LAMBDA; OMEGA; MAPS AB It is now about 10 years since the evidence, based on Type la supernovae, for the acceleration of the expansion of the Universe was discovered. I will discuss some aspects of the work and events in the Supernova Cosmology Project (SCP), during the period 1988 to 1998, which led to this discovery. C1 [Goldhaber, Gerson] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Goldhaber, G (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. EM gerson@lbl.gov NR 50 TC 4 Z9 4 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0703-9 J9 AIP CONF PROC PY 2009 VL 1166 BP 53 EP 72 PG 20 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BPR82 UT WOS:000279741300008 ER PT S AU White, JT Nygren, D Ooi, W Salinas, G Wang, H AF White, J. T. Nygren, D. Ooi, W. Salinas, G. Wang, H. BE Cline, DB TI A High Pressure Noble Gas Approach for WIMP Detection SO SOURCES AND DETECTION OF DARK MATTER AND DARK ENERGY IN THE UNIVERSE SE AIP Conference Proceedings LA English DT Proceedings Paper CT 8th UCLA Symposium on Sources and Detection of Dark Matter and Dark Energy in the Universe CY FEB 20-22, 2008 CL Marina del Rey, CA SP Univ Calif Los Angeles DE xenon; gas; WIMP; dark matter; high pressure; discrimination ID XENON AB Initial measurements of the charge and light yield in pure xenon gas at 20 bar are discussed. Preliminary findings are that the yields are not greatly different from those reported in liquid xenon. Also, they are similar to yields observed in 50 bar Ar(Xe) and 100 bar Ne(Xe) in the same apparatus. In addition, good nuclear recoil discrimination is observed at low recoil energies relevant to WIMP interactions. The findings suggest that a room-temperature, high pressure gas approach may be an attractive alternative to liquid phase detectors for future large scale WIMP measurement experiments. C1 [White, J. T.; Salinas, G.] Texas A&M Univ, Dept Phys, 4242 TAMU, College Stn, TX 77843 USA. [Ooi, W.; Wang, H.] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA. [Nygren, D.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP White, JT (reprint author), Texas A&M Univ, Dept Phys, 4242 TAMU, College Stn, TX 77843 USA. FU NSF [PHY-07-05076, PHY-08-10281, PHY- 06-53489]; DOE [DE-FG02-95ER40917] FX This work was funded by NSF Grants No. PHY-07-05076, PHY-08-10281, PHY- 06-53489 and DOE grant DE-FG02-95ER40917. NR 4 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0703-9 J9 AIP CONF PROC PY 2009 VL 1166 BP 253 EP + PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BPR82 UT WOS:000279741300036 ER PT B AU Levy, JE Ganti, A Phillips, CA Hamlet, BR Landahl, AJ Gurrieri, TM Carr, RD Carroll, MS AF Levy, James E. Ganti, Anand Phillips, Cynthia A. Hamlet, Benjamin R. Landahl, Andrew J. Gurrieri, Thomas M. Carr, Robert D. Carroll, Malcolm S. GP ACM TI Brief Announcement: The Impact of Classical Electronics Constraints on a Solid-State Logical Qubit Memory SO SPAA'09: PROCEEDINGS OF THE TWENTY-FIRST ANNUAL SYMPOSIUM ON PARALLELISM IN ALGORITHMS AND ARCHITECTURES LA English DT Proceedings Paper CT 21st ACM Symposium on Parallelism in Algorithms and Architectures CY AUG 11-13, 2009 CL Calgary, CANADA SP ACM SIGACT, ACM SIGARCH, European Assoc Theoret Comp Sci AB We present and analyze an architecture for a logical qubit memory that is tolerant of faults in the processing of silicon double quantum dot (DQD) qubits. A highlight of our analysis is an in-depth consideration of the constraints faced when integrating DQDs with classical control electronics. C1 [Levy, James E.; Ganti, Anand; Phillips, Cynthia A.; Hamlet, Benjamin R.; Landahl, Andrew J.; Gurrieri, Thomas M.; Carr, Robert D.; Carroll, Malcolm S.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Levy, JE (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM jelevy@sandia.gov; aganti@sandia.gov; caphill@sandia.gov; brhamle@sandia.gov; alandahl@sandia.gov; tmgurri@sandia.gov; rdcarr@sandia.gov; mscarro@sandia.gov NR 16 TC 1 Z9 1 U1 0 U2 1 PU ASSOC COMPUTING MACHINERY PI NEW YORK PA 1515 BROADWAY, NEW YORK, NY 10036-9998 USA BN 978-1-60558-606-9 PY 2009 BP 166 EP 168 PG 3 WC Computer Science, Hardware & Architecture SC Computer Science GA BMB78 UT WOS:000271793100023 ER PT S AU Jordanova, VK AF Jordanova, V. K. BE Zhelyazkov, I TI New Insights on Geomagnetic Storms from Observations and Modeling SO SPACE PLASMA PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT School and Workshop on Space Plasma Physics CY AUG 31-SEP 07, 2008 CL Sozopol, BULGARIA SP Sofia Univ, Fac Phys, Sveti Sedmochislenitsi Fdn, European Off Aerosp Res & Dev, European Space Agcy DE ring current; electric fields; plasma motion; inner magnetosphere; magnetic storms ID RING CURRENT IONS; TRAPPED RADIATION; ELECTRIC-FIELDS; PARTICLES; REGIONS; MAGNETOSPHERE; LIFETIMES AB Understanding the response at Earth of the Sun's varying energy output and forecasting geomagnetic activity is of central interest to space science, since intense geomagnetic storms may cause severe damages on technological systems and affect communications. Episodes of southward (B(z) < 0) interplanetary magnetic field (IMF) which lead to disturbed geomagnetic conditions are associated either with coronal mass ejections (CMEs) and possess long and continuous negative IMF B(z) excursions, or with high speed solar wind streams (HSS) whose geoeffectiveness is due to IMF B(z) profiles fluctuating about zero with various amplitudes and duration. We show examples of ring current simulations during two geomagnetic storms representative of each interplanetary condition with our kinetic ring current-atmosphere interactions model (RAM), and investigate the mechanisms responsible for trapping particles and for causing their loss. We find that periods of increased magnetospheric convection coinciding with enhancements of plasma sheet density are needed for strong ring current buildup. During the HSS-driven storm the convection potential is highly variable and causes small sporadic injections into the ring current. The long period of enhanced convection during the CME-driven storm causes a continuous ring current injection penetrating to lower L shells and stronger ring current buildup. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Jordanova, VK (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. OI Jordanova, Vania/0000-0003-0475-8743 NR 34 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0656-8 J9 AIP CONF PROC PY 2009 VL 1121 BP 129 EP 134 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BKF59 UT WOS:000267981700016 ER PT S AU Hartouni, EP AF Hartouni, Edward P. BE Robertson, GA TI An Assessment of Nuclear Isomers as an Energy Storage Medium SO SPACE, PROPULSION & ENERGY SCIENCES INTERNATIONAL FORUM SPESIF-2009 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 13th Conference on Thermophysics Applications in Microgravity/6th Symposium on New Frontiers in Space Propulsion Sciences/1st Symposium on Astrosociology CY FEB 24-26, 2009 CL Huntsville, AL SP Amer Astronaut Soc, Amer Inst Aeronaut & Astronaut, Astrosociol Res Inst DE Nuclear Isomers; Photonuclear; Super-Elastic Scattering AB Nuclear Isomers have been suggested as a potential high energy density medium that might be used to store energy. This talk assesses the state of the science supporting key elements of using nuclear isomers in energy storage applications. The focus is on the nuclear isomer (178m2)Hf which has been most widely suggested for energy storage applications. However, the science issues apply to all nuclear isomer. The assessment addresses the production of the nuclear isomer, and inducing the release of the isomer. Also discussed are novel speculations on photon and/or neutron chain reactions, both as a "pure" material as well as mixed with other materials. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Hartouni, EP (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94550 USA. EM hartouni1@llnl.gov OI Hartouni, Edward/0000-0001-9869-4351 NR 11 TC 0 Z9 0 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0639-1 J9 AIP CONF PROC PY 2009 VL 1103 BP 492 EP 500 PG 9 WC Engineering, Aerospace; Astronomy & Astrophysics; Energy & Fuels SC Engineering; Astronomy & Astrophysics; Energy & Fuels GA BJG15 UT WOS:000265592900059 ER PT S AU Cotter, CJ Holm, DD AF Cotter, Colin J. Holm, Darryl D. BE Temam, RM Tribbia, JJ TI Momentum Maps for Lattice EPDiff SO SPECIAL VOLUME: COMPUTATIONAL METHODS FOR THE ATMOSPHERE AND THE OCEANS SE Handbook of Numerical Analysis LA English DT Article; Book Chapter ID SHALLOW-WATER; EQUATIONS C1 [Cotter, Colin J.] Univ London Imperial Coll Sci Technol & Med, Dept Math, London SW7 2AZ, England. [Holm, Darryl D.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Cotter, CJ (reprint author), Univ London Imperial Coll Sci Technol & Med, Dept Math, Huxley Bldg, London SW7 2AZ, England. OI Holm, Darryl D/0000-0001-6362-9912 NR 20 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1570-8659 BN 978-0-08-093103-6 J9 HANDB NUM ANAL PY 2009 VL 14 BP 247 EP 278 DI 10.1016/S1570-8659(08)00205-6 PG 32 WC Mathematics SC Mathematics GA BCT26 UT WOS:000311344600007 ER PT J AU Glatfelter, A Dybowski, C Bai, S Kragten, D Blake, MJ Segarra, S Perry, DL AF Glatfelter, Alicia Dybowski, Cecil Bai, Shi Kragten, David Blake, Margaret J. Segarra, Santiago Perry, Dale L. TI Infrared studies of lead(II) halide-1,10-phenanthroline photosensitive materials SO SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY LA English DT Article DE Infrared; Lead(II); Lead(II) bromide; Lead(II) iodide; 1,10-Phenanthroline ID 1,10-PHENANTHROLINE COMPLEXES; CRYSTAL-STRUCTURE; TRANS-POLYACETYLENE; SPECTRA; 2,2'-BIPYRIDINE; PHENANTHROLINES; SPECTROSCOPY; IRON(II); ADDUCTS; LIGANDS AB Infrared spectroscopic studies of 1:1 and 1:2 complexes of lead(II) bromide and lead(II) iodide with 1,10-phenanthroline were reported. Vibrational assignments are made by comparison to reported spectra of the uncomplexed 1,10-phenailthroline molecule. Small shifts of the ligand vibrational bands are characteristic of the complexes. (C) 2008 Elsevier B.V. All rights reserved. C1 [Blake, Margaret J.; Segarra, Santiago; Perry, Dale L.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Glatfelter, Alicia; Dybowski, Cecil; Bai, Shi; Kragten, David] Univ Delaware, Dept Chem & Biochem, Newark, DE 19716 USA. RP Perry, DL (reprint author), Lawrence Berkeley Natl Lab, Mail Stop 70A-1150, Berkeley, CA 94720 USA. EM dlperry@lbl.gov FU American Chemical Society [33633-AC5]; National Science Foundation [CHE-0411790]; U.S. Department of Energy [DE-AC0205CH11231] FX One of the authors (CRD) acknowledges the financial support of the Petroleum Research Fund of the American Chemical Society, Grant Number 33633-AC5 and the National Science Foundation under Grant CHE-0411790. DLP wishes to acknowledge support of the U.S. Department of Energy under Contract Number DE-AC0205CH11231. The authors thank Davide Miksa for recording the infrared spectra and Kaveri Sawant for obtaining the X-ray diffraction patterns of the compounds. NR 28 TC 0 Z9 0 U1 1 U2 11 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1386-1425 J9 SPECTROCHIM ACTA A JI Spectroc. Acta Pt. A-Molec. Biomolec. Spectr. PD JAN PY 2009 VL 71 IS 5 BP 1922 EP 1926 DI 10.1016/j.saa.2008.07.012 PG 5 WC Spectroscopy SC Spectroscopy GA 386RJ UT WOS:000261900000049 PM 18722805 ER PT J AU Clegg, SM Sklute, E Dyar, MD Barefield, JE Wiens, RC AF Clegg, Samuel M. Sklute, Elizabeth Dyar, M. Darby Barefield, James E. Wiens, Roger C. TI Multivariate analysis of remote laser-induced breakdown spectroscopy spectra using partial least squares, principal component analysis, and related techniques SO SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY LA English DT Article DE Remote laser-induced breakdown spectroscopy; Multivariate analysis; Principal components analysis; Partial least squares ID QUANTITATIVE ELEMENTAL ANALYSIS; MASS ABSORPTION-COEFFICIENTS; INDUCED PLASMA; MATRIX; EMISSION; SAMPLES; EXPLORATION; ATMOSPHERE; CHLORINE; ANALOGS AB Quantitative analysis with laser-induced breakdown spectroscopy traditionally employs calibration curves that are complicated by chemical matrix effects. These chemical matrix effects influence the laser-induced breakdown spectroscopy plasma and the ratio of elemental composition to elemental emission line intensity. Consequently, laser-induced breakdown spectroscopy calibration typically requires a priori knowledge of the unknown, in order for a series of calibration standards similar to the unknown to be employed. In this paper, three new Multivariate Analysis techniques are employed to analyze the laser-induced breakdown spectroscopy spectra of 18 disparate igneous and highly-metamorphosed rock samples. Partial Least Squares analysis is used to generate a calibration model from which unknown samples can be analyzed. Principal Components Analysis and Soft Independent Modeling of Class Analogy are employed to generate a model and predict the rock type of the samples. These Multivariate Analysis techniques appear to exploit the matrix effects associated with the chemistries of these 18 samples. (C) 2008 Elsevier B.V. All rights reserved. C1 [Clegg, Samuel M.; Barefield, James E.] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87544 USA. [Sklute, Elizabeth; Dyar, M. Darby] Mt Holyoke Coll, S Hadley, MA 01075 USA. [Wiens, Roger C.] Los Alamos Natl Lab, Int Space & Response Div, Los Alamos, NM 87544 USA. RP Clegg, SM (reprint author), Los Alamos Natl Lab, Div Chem, POB 1663, Los Alamos, NM 87544 USA. EM sclegg@lanl.gov OI Barefield, James/0000-0001-8674-6214; Clegg, Sam/0000-0002-0338-0948 FU NASA [NNG06GH35G] FX We gratefully acknowledge the NASA Mars Fundamental Research Program (MFRP), grant NNG06GH35G for the support of the work. We would like to thank Prof. David Brown, Prof. Ray Arvidson, Dr. Michael Ebinger and Dr. Ronny Harris for the insightful discussions regarding various multivariate analysis techniques. We also appreciate the insightful and thorough comments made by the reviewers. NR 40 TC 137 Z9 138 U1 6 U2 35 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0584-8547 J9 SPECTROCHIM ACTA B JI Spectroc. Acta Pt. B-Atom. Spectr. PD JAN PY 2009 VL 64 IS 1 BP 79 EP 88 DI 10.1016/j.sab.2008.10.045 PG 10 WC Spectroscopy SC Spectroscopy GA 401RQ UT WOS:000262960000010 ER PT J AU Oh, SY Yueh, FY Singh, JP Herman, CC Zeigler, K AF Oh, Seong Yong Yueh, Fang Yu Singh, Jagdish P. Herman, Connie C. Zeigler, Kristine TI Preliminary evaluation of laser induced breakdown spectroscopy for slurry samples SO SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY LA English DT Article DE Slurry; Laser induced breakdown spectroscopy; Echelle spectrometer; Czerny-Turner spectrometer ID INDUCED PLASMA SPECTROSCOPY; BOTTOM ASHES; GLASS MELTS; VITRIFICATION; SPECTROMETRY; FLY AB Laser-induced breakdown spectroscopy (LIBS) was applied to the analysis of simulant slurry samples used in the vitrification process of liquid radioactive wastes. A spectroscopic analysis was performed by two different detection systems: Czerny-Turner spectrometer coupled with intensified diode array detector (IDAD) and an Echelle spectrometer with intensified charge coupled device (ICCD). For the Czerny-Turner detection system. the normalized intensity method, which is the normalization of the atomic emission intensity by the released whole plasma emission area intensity. was employed to improve the reproducibility of LIBS signals. The Echelle detection system showed a high efficiency in simultaneous multi-element detection and determination of the physical quantities of the simulant. (C) 2008 Elsevier B.V. All rights reserved. C1 [Oh, Seong Yong; Yueh, Fang Yu; Singh, Jagdish P.] Mississippi State Univ, Inst Clean Energy Technol, Starkville, MS 39759 USA. [Herman, Connie C.; Zeigler, Kristine] Savannah River Natl Lab, Aiken, SC 29808 USA. RP Singh, JP (reprint author), Mississippi State Univ, Inst Clean Energy Technol, Starkville, MS 39759 USA. EM singh@icet.msstate.edu FU U.S. Department of Energy (DOE) Cooperative [DE-FC01-06EW07040] FX Authors would like to thank T. Miller for assistance in laboratory and David Peeler for discussion during the work. This work is funded by U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC01-06EW07040. NR 25 TC 17 Z9 17 U1 2 U2 6 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0584-8547 J9 SPECTROCHIM ACTA B JI Spectroc. Acta Pt. B-Atom. Spectr. PD JAN PY 2009 VL 64 IS 1 BP 113 EP 118 DI 10.1016/j.sab.2008.10.023 PG 6 WC Spectroscopy SC Spectroscopy GA 401RQ UT WOS:000262960000016 ER PT J AU Ernst, T Tomasi, D Chang, L AF Ernst, Thomas Tomasi, Dardo Chang, Linda BE Goodkin, K Shapshak, P Verma, A TI Functional Magnetic Resonance Imaging in HIV-Associated Dementia SO SPECTRUM OF NEURO-AIDS DISORDERS: PATHOPHYSIOLOGY, DIAGNOSIS, AND TREATMENT LA English DT Article; Book Chapter ID EMISSION COMPUTED-TOMOGRAPHY; WORKING-MEMORY; HUMAN BRAIN; BLOOD OXYGENATION; ARTERIAL WATER; MRI; PERFUSION; ACTIVATION; COMPLEX; FMRI C1 [Ernst, Thomas; Chang, Linda] Univ Hawaii, John A Burns Sch Med, Dept Med, Honolulu, HI 96813 USA. [Tomasi, Dardo] Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. RP Ernst, T (reprint author), Univ Hawaii, John A Burns Sch Med, Dept Med, Honolulu, HI 96813 USA. RI Tomasi, Dardo/J-2127-2015 NR 73 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1752 N STREET NW, WASHINGTON, DC 20036-2904 USA BN 978-1-55581-569-1 PY 2009 BP 273 EP + PG 11 WC Infectious Diseases; Clinical Neurology SC Infectious Diseases; Neurosciences & Neurology GA BPJ65 UT WOS:000279006800020 ER PT S AU Marciano, WJ AF Marciano, William J. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Spin and Fundamental Symmetries SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Dipole Moments; CKM Unitarity ID DEEP-INELASTIC-SCATTERING; GAUGE THEORIES; SUM-RULES; ALGEBRA; MOMENT AB Two very different applications of spin for testing the Standard Model and uncovering "New Physics" are discussed. The first employs spin to monitor and measure (or bound) electromagnetic dipole moments. The second, more theoretical use, relates QCD corrections derived for spin structure functions and the Bjorken Sum Rule to hadronic effects in the CKM unitarity test vertical bar V(ud)vertical bar(2) + vertical bar V(us)vertical bar(2) + vertical bar V(ub)vertical bar(2) = 1 and thereby reduces its uncertainty to +/-0.06%. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Marciano, WJ (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 26 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 41 EP 47 PG 7 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200004 ER PT S AU Semertzidis, YK AF Semertzidis, Yannis K. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Review of Electric Dipole Moments of Fundamental Particles SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin Comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL ID NEUTRON; LIMIT AB Electric dipole moments (EDM) experiments are in the research frontier of CP-violation beyond the standard model (SM). EDM experiments set the current limits on CP-violation beyond the SM and are most likely to be the first ones to discover if nature has indeed chosen that path. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Semertzidis, YK (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. EM yannis@bnl.gov NR 38 TC 3 Z9 3 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 48 EP 61 PG 14 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200005 ER PT S AU Belov, A Zelenski, A AF Belov, A. Zelenski, A. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Present Status And Future Prospects Of Polarized Ion Sources SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin Comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Polarized Ion Sources ID BEAMS AB Recent progress in polarized ion sources development is reviewed. New techniques for production of polarized H- ion (proton), D-= (D+) and He-3(++) ion beam are discussed. Feasibility studies of these techniques are in progress at BNL and other laboratories. Polarized deuteron beams will be required for the polarization program at the Dubna Nuclotron and at the deuteron Electric Dipole Moment experiment at BNL. Experiments with polarized He-3(++) ion beams are a part of the experimental program at the future Electron Ion Collider. C1 [Belov, A.] Russian Acad Sci, INR, Moscow, Russia. [Zelenski, A.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Belov, A (reprint author), Russian Acad Sci, INR, Moscow, Russia. EM belov@inr.ru; zelenski@bnl.gov NR 17 TC 1 Z9 1 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 108 EP + PG 2 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200012 ER PT S AU Weiss, C AF Weiss, C. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Generalized Parton Distributions: Status and Perspectives SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL ID VIRTUAL COMPTON-SCATTERING; IMPACT PARAMETER SPACE; TO-LEADING ORDER; ELECTROPRODUCTION; QUARK; GPDS AB We summarize recent developments in understanding the concept of generalized parton distributions (GPDs), its relation to nucleon structure, and its application to high-Q(2) electroproduction processes. Following a brief review of QCD factorization and transverse nucleon structure, we discuss (a) new theoretical methods for the analysis of deeply-virtual Compton scattering (t-channel-based GPD parametizations, dispersion relations); (b) the phenomenology of hard exclusive meson production (experimental tests of dominance of small-size configurations, model-independent comparative studies); (c) the role of GPDs in small-x physics and pp scattering QCD dipole model, central exclusive diffraction). We emphasize the usefulness of the transverse spatial (or impact parameter) representation for both understanding the reaction mechanism in hard exclusive processes and visualizing the physical content of the GPDs. C1 Ctr Theory, Jefferson Lab, Newport News, VA 23606 USA. RP Weiss, C (reprint author), Ctr Theory, Jefferson Lab, Newport News, VA 23606 USA. EM weiss@jlab.org NR 49 TC 7 Z9 7 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 150 EP 160 PG 11 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200017 ER PT S AU Leonova, MA Chao, AW Krisch, AD Morozov, VS Raymond, RS Sivers, DW Wong, VK Garishvili, A Gebel, R Lehrach, A Lorentz, B Maier, R Prasuhn, D Stockhorst, H Welsch, D Hinterberger, F Ulbrich, K Derbenev, YS Kondratenko, AM Stephenson, EJ AF Leonova, M. A. Chao, A. W. Krisch, A. D. Morozov, V. S. Raymond, R. S. Sivers, D. W. Wong, V. K. Garishvili, A. Gebel, R. Lehrach, A. Lorentz, B. Maier, R. Prasuhn, D. Stockhorst, H. Welsch, D. Hinterberger, F. Ulbrich, K. Derbenev, Ya. S. Kondratenko, A. M. Stephenson, E. J. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI SPIN@COSY: Spin-Manipulating Polarized Deuterons and Protons SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin Comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Spin resonance strength; Spin dynamics; Depolarization AB We studied spin manipulation of 1.85 GeV/c polarized deuteron beam stored in COSY obtaining a spin-flip efficiency of 97 +/- 1%. We first discovered experimentally and then explained theoretically interesting behavior of the deuteron tensor polarization. We, for the first time, studied systematically spin resonance strengths induced by rf dipoles and solenoids. We found huge disagreements between the strengths measured in controlled Froissart-Stora sweeps and the theoretical values calculated using the well-known formulae. These data instigated re-examination of these formulae. We tested Chao's proposed new matrix formalism for describing the spin dynamics due to a single spin resonance, which may be the first fundamental improvement of the Froissart-Stora equation in that it allows analytic calculation of the beam polarization's behavior inside a resonance. Our measurements of the deuteron's polarization near and inside the resonance agreed precisely with the Chao formalism's predicted oscillations. We tested Kondratenko's proposal to overcome depolarizing resonances by ramping through them with a crossing pattern, which should force the depolarizing contributions to cancel themselves. Our first test of this idea with 2.1 GeV/c protons was not conclusive but a later test with 1.85 GeV/c deuterons demonstrated a rather substantial reduction in the depolarization compared to the tune jump at the same rate. C1 [Leonova, M. A.; Chao, A. W.; Krisch, A. D.; Morozov, V. S.; Raymond, R. S.; Sivers, D. W.; Wong, V. K.] Univ Michigan, Spin Phys Ctr, Ann Arbor, MI 48109 USA. [Garishvili, A.; Gebel, R.; Lehrach, A.; Lorentz, B.; Maier, R.; Prasuhn, D.; Stockhorst, H.; Welsch, D.] Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany. [Hinterberger, F.; Ulbrich, K.] Univ Bonn, Helmholtz Inst Strahlen Kernphys, D-53115 Bonn, Germany. [Derbenev, Ya. S.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. [Kondratenko, A. M.] GOO Zaryad, Novosibirsk 630058, Russia. [Stephenson, E. J.] Indiana Univ, IUCF, Bloomington, IN 47408 USA. RP Leonova, MA (reprint author), Univ Michigan, Spin Phys Ctr, Ann Arbor, MI 48109 USA. EM leonova@umich.edu; achao@slac.stanford.edu; krisch@umich.edu; morozov@umich.edu; rraymond@umich.edu; derbenev@jlab.org; kondratenkom@mail.ru; stephene@indiana.edu FU German BMBF Science Ministry, its JCHP-FFE program at COSY; Helmholtz Association through funds provided to the virtual institute "Spin and strong QCD" [VH-VI-231]; U.S; NSF FX This research was supported by grants from the German BMBF Science Ministry, its JCHP-FFE program at COSY, the Helmholtz Association through funds provided to the virtual institute "Spin and strong QCD" (VH-VI-231), and the U.S. NSF. NR 20 TC 0 Z9 0 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 168 EP + PG 2 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200019 ER PT S AU Poelker, M AF Poelker, M. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Summary Report of PESP2008-The Workshop on Polarized Electron Sources and Polarimeters SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE polarized electrons AB The Workshop on Polarized Electron Sources and Polarimeters (PESP2008) was hosted by Jefferson Lab October 1-3, 2008, in association with SPIN2008, continuing a tradition since 1983. The workshop was well attended with 84 registants, 38 oral presentations and 17 posters. The usual topics were covered: DC and RF photoguns, high voltage issues, photocathodes, drive lasers, vacuum and polarimetry. Detailed accounts of each contribution (oral and poster) appear within these Proceedings. This submission summarizes some of the highlights of the workshop. C1 Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. RP Poelker, M (reprint author), Thomas Jefferson Natl Accelerator Facil, 12000 Jefferson Ave, Newport News, VA 23606 USA. EM poelker@jlab.org; poelker@jlab.org NR 1 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 174 EP 179 PG 6 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200020 ER PT S AU Roser, T AF Roser, Thomas BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI The Future of High Energy Polarized Proton Beams SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Polarized beams AB The acceleration and storage of high energy polarized proton beam has made tremendous progress over the last forty years challenging along the way the technologies, precision and the understanding of the beam dynamics of accelerators. This progress is most evident in that one can now contemplate high energy colliders with polarized beams and high luminosity at the same time. After a brief summary of the development and history of polarized proton beam acceleration the paper will focus on the highest energy polarized beams and the possibility of accelerating polarized beams to even higher energies in the future. C1 Brookhaven Natl Lab, Upton, NY 11793 USA. RP Roser, T (reprint author), Brookhaven Natl Lab, Upton, NY 11793 USA. EM roser@bnl.gov NR 26 TC 0 Z9 0 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 180 EP 189 PG 10 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200021 ER PT S AU Subedi, RR Deng, XY Ding, HB Michaels, R Reimer, PE Wang, DC Zheng, XC AF Subedi, Ramesh R. Deng, Xiaoyan Ding, Huaibo Michaels, Robert Reimer, Paul E. Wang, Diancheng Zheng, Xiaochao BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI (e)over-right-arrow-H-2 Parity Violating Deep Inelastic Scattering at Jefferson Laboratory at 6 GeV SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin Comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE parity; asymmetry; Standard Model AB The upcoming parity violating deep inelastic scattering (PVDIS) experiment E08-011 in Hall A at Thomas Jefferson National Accelerator Facility (Jefferson Lab) aims to measure a combination of the axial hadronic couplings of the electron with a factor of six improvement in precision over world data. Precise data for the couplings are essential to search for physics beyond the Standard Model. The experiment will measure a 10(-4) asymmetry using polarized electron scattering from deuterium with a beam energy of 6 GeV. Recent progress on the preparation for this experiment, with an emphasis on the tests of the data acquisition system and the capability of measuring a small asymmetry, deadtime, and pileup effects are presented. C1 [Subedi, Ramesh R.; Deng, Xiaoyan; Wang, Diancheng; Zheng, Xiaochao] Univ Virginia, 382 McCormick Rd, Charlottesville, VA 22904 USA. [Ding, Huaibo] Tsinghua Univ, Beijing 100084, Peoples R China. [Michaels, Robert] Thomas Jefferson Natl Accelerator Fac, Newport News, VA 23606 USA. [Reimer, Paul E.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. RP Subedi, RR (reprint author), Univ Virginia, 382 McCormick Rd, Charlottesville, VA 22904 USA. EM rsubedi@jlab.org; xz5y@virginia.edu FU U. S. National Science Foundation; U. S. Department of Energy (DOE) [DE-AC02-06CH11357]; Jefferson Science Associates, LLC under U. S. DOE [DE-AC05-06OR23177] FX This work is supported in part by the U. S. National Science Foundation and the U. S. Department of Energy (DOE), under Contract No. DE-AC02-06CH11357. Notice:Authored by Jefferson Science Associates, LLC under U. S. DOE Contract No. DE-AC05-06OR23177. The U. S. Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce this manuscript for U. S. Government purposes. NR 4 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 245 EP + PG 2 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200031 ER PT S AU Deur, A AF Deur, A. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI The Strong Coupling Constant at Large Distances SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin Comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Strong coupling constant; QCD sum rules; non-perturbative; commensurate scale relations; Schwinger-Dyson; Lattice QCD; AdS/CFT ID QUANTUM CHROMODYNAMICS; ALGEBRA; NUCLEON; QCD AB In this paper we discuss effective strong coupling constants. Those are well behaved in the low-Q(2) domain, contrarily to alpha(s) from perturbative Quantum Chromodynamics (pQCD). We present an extraction of an effective strong coupling constant from Jefferson Lab polarized data at intermediate and low Q(2). We also show how these data, together with spin sum rules, allow us to obtain the effective coupling constant over the entire Q(2) range. We then discuss the relation between the experimentally extracted coupling constant and theoretical calculations at low Q(2). We conclude on the importance of such study for the application of the Anti-de-Sitter space/ Conformal Field Theory (AdS/CFT) correspondence to QCD. C1 Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. RP Deur, A (reprint author), Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. EM deurpam@jlab.org NR 36 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 281 EP 284 PG 4 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200039 ER PT S AU Pierce, J AF Pierce, Joshua BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI The Double Spin Asymmetry in Exclusive pi(+) Electroproduction with CLAS SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Resonances; Asymmetries AB The eg1b run at Jefferson Lab used the CLAS detector in Hall B along with a 1.6 GeV - 5.6 GeV polarized electron beam and polarized nuclear targets (composed of NH(3) and ND(3)) to measure single and double spin asymmetries. This analysis is of the double and single spin asymmetries in the exclusive electro-production of positive pions (ep -> e pi(+)n). The asymmetries were measured as a function of W, Q(2), cos theta*, and phi*. The value of these asymmetries can be used to help determine the spin structure of the resonances in the baryon resonance region. Preliminary results for the asymmetries are shown. C1 Oak Ridge Natl Lab, Oak Ridge, TN USA. RP Pierce, J (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN USA. EM piercejj@ornl.gov NR 4 TC 0 Z9 0 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 369 EP 372 PG 4 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200059 ER PT S AU Yuan, F AF Yuan, Feng BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Theoretical Overview on Recent Developments in Transverse Spin Physics SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Single transverse-spin asymmetries ID DEEP-INELASTIC SCATTERING; FINAL-STATE INTERACTIONS; PARTON DISTRIBUTIONS; EVOLUTION-EQUATIONS; Q(2) EVOLUTION; HARD PROCESSES; SINGLE-SPIN; DRELL-YAN; QCD; GAUGE AB Transverse-spin physics has been very active and rapidly developing in the last few years. In this talk, I will briefly summarize recent theoretical developments, focusing on the associated QCD dynamics in transverse spin physics. C1 Brookhaven Natl Lab, Res Ctr, RIKEN, Upton, NY 11973 USA. RP Yuan, F (reprint author), Brookhaven Natl Lab, Res Ctr, RIKEN, Bldg 510A, Upton, NY 11973 USA. EM fyuan@lbl.gov RI Yuan, Feng/N-4175-2013 NR 44 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 403 EP 408 PG 6 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200067 ER PT S AU Liu, H AF Liu, Han CA PHENIX Collaboration BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Transverse Single Spin Asymmetry in Heavy Flavor Production in Polarized p plus p Collisions at PHENIX SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Proton structure; transverse spin ID PION-PRODUCTION; GEV-C; P(P)OVER-BAR COLLISIONS; J/PSI PRODUCTION; 1.8 TEV; ROOT-S; SCATTERING AB At RHIC energy, heavy flavor production is dominated by gluon-gluon fusion, so the Collins effect has minimum impact on transverse single spin asymmetry (A(N)) as the gluon's transversity is zero. The measurement of A(N) in heavy flavor production is sensitive to the gluon Sivers distribution which is related to the orbital angular momentum of gluons inside the polarized protons. The most recent results of A(N) in J/Psi and open heavy flavor production at forward rapidity are presented. C1 [Liu, Han; PHENIX Collaboration] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Liu, H (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM hliu@lanl.gov NR 30 TC 9 Z9 9 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 439 EP 442 PG 4 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200074 ER PT S AU Bacchetta, A AF Bacchetta, Alessandro BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI What can we learn from TMD measurements? SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE parton distribution functions; semi-inclusive DIS; transverse momentum ID DRELL-YAN; SPIN AB Transverse-momentum-dependent parton distribution and fragmentation functions describe the partonic structure of the nucleon in a three-dimensional momentum space. They are subjects of flourishing theoretical and experimental activity. They provide novel and intriguing information on hadronic structure, including evidence of the presence of partonic orbital angular momentum. C1 Ctr Theory, Jefferson Lab, Newport News, VA 23606 USA. RP Bacchetta, A (reprint author), Ctr Theory, Jefferson Lab, 12000 Jefferson Ave, Newport News, VA 23606 USA. EM pampa@phys.jdvu.ac.in NR 20 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 447 EP 452 PG 6 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200076 ER PT S AU Qian, X Gao, H Chen, JP Chudakov, E AF Qian, X. Gao, H. Chen, J. -P Chudakov, E. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Study of semi-inclusive deep inelastic (e, e 'pi(+/-)) production with a polarized He-3 target SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin Comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Single transverse-spin asymmetries ID PARTON DISTRIBUTIONS; ELECTROPRODUCTION; LEPTOPRODUCTION; ASYMMETRIES; NUCLEON AB The 12 GeV upgrade at Jefferson Lab will open a now era of precision measurement of the Transverse Momentum Dependent parton distribution functions (TMDs) through the Semi-Inclusive Deep-Inelastic Scattering (SIDIS). In this talk, we discussed the projected results on measurements of TMDs using a newly proposed large acceptance solenoid detector together with the standard Hall A polarized He-3 target. The high luminosity and the large acceptance detector will allow for a precise 3-D (x, z and P-T) mapping of azimuthal asymmetries. Furthermore, the full 2 pi azimuthal angular coverage for the solenoid detector is essential to control the relevant systematic uncertainties in extracting the azimuthal asymmetries. With a 40 cm long transversely polarized He-3 target, a total of 60 days of beam time at a beam current of 15 mu A, we can determine tensor charge of d quark to 10% in a model independent way. The extracted Sivers asymmetry will provide important information to understand the correlation between the quark orbital angular momentum and the nucleon spin. C1 [Qian, X.; Gao, H.] Duke Univ, Durham, NC 27706 USA. [Chen, J. -P; Chudakov, E.] Jefferson Lab, Newport News, VA USA. RP Qian, X (reprint author), Duke Univ, Durham, NC 27706 USA. EM xqian@jlab.org; gao@phy.duke.edu; jpchen@jlab.org RI Gao, Haiyan/G-2589-2011; OI Qian, Xin/0000-0002-7903-7935 NR 24 TC 0 Z9 0 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 457 EP + PG 2 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200078 ER PT S AU Gohn, W Avakian, H Joo, K Ungaro, M AF Gohn, W. Avakian, H. Joo, K. Ungaro, M. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Beam spin asymmetries from semi-inclusive pion electroproduction in deep inelastic scattering SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin Comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE SIDIS; beam-spin asymmetry AB Measurements of beam-spin asymmetries from semi-inclusive pion electro-production in deep inelastic scattering (DIS) have been performed. Data were taken with the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab using a 5.7 GeV longitudinally polarized electron beam and an unpolarized liquid hydrogen target. All three pion channels (pi(+), pi(0) and pi(-)) were measured simultaneously over a large range of kinematics at the intermediate Q(2) range (Q(2) approximate to 1 - 3 GeV2). We present our preliminary studies of single-spin azimuthal asymmetries of the two charged pion channels as functions of z and P-T. This new high statistical data will provide important means of studying physics underlying the spin structure of the nucleon. C1 [Gohn, W.; Joo, K.; Ungaro, M.] Univ Connecticut, Storrs, CT 06269 USA. [Avakian, H.] Jefferson Lab, Newport News, VA USA. RP Gohn, W (reprint author), Univ Connecticut, Storrs, CT 06269 USA. EM gohn@jlab.org; avakian@jlab.org NR 7 TC 5 Z9 5 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 461 EP + PG 2 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200079 ER PT S AU Arnold, S Metz, A Schlegel, M AF Arnold, Simone Metz, Andreas Schlegel, Marc BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Exploring TMDs through Drell-Yan processes SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin Comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Dilepton Production; Polarization Observables; Parton Model ID LEPTON-PAIR PRODUCTION; SPIN PRODUCTION ASYMMETRIES; HIGH-ENERGIES; HADRON COLLISIONS; ANGULAR-DISTRIBUTIONS; HARD-SCATTERING; NEGATIVE PIONS; LEPTOPRODUCTION; DILEPTONS; TUNGSTEN AB We present a comprehensive formalism for dilepton production from the collision of two polarized spin-1/2 hadrons by identifying the general angular distribution of the cross section in combination with a complete set of structure functions. The various structure functions are computed in the parton model approximation where we mainly consider the case when the transverse momentum of the dilepton pair is much smaller than its invariant mass. In this kinematical region dilepton production can be described in terms of transverse momentum dependent parton distributions. C1 [Arnold, Simone] Ruhr Univ Bochum, Inst Theoret Phys 2, D-44780 Bochum, Germany. [Metz, Andreas] Temple Univ, Depy Phys, Philadelphia, PA 19122 USA. [Schlegel, Marc] Theory Ctr, Jefferson Lab, Newport News, VA 23606 USA. RP Arnold, S (reprint author), Ruhr Univ Bochum, Inst Theoret Phys 2, D-44780 Bochum, Germany. EM metza@temple.edu; schlegel@jlab.org FU Verbundforschung "Hadronen und Kerne" of the BMBF; Deutsche Forschungsgemeinschaft (DFG) FX This work has partially been supported by the Verbundforschung "Hadronen und Kerne" of the BMBF and by the Deutsche Forschungsgemeinschaft (DFG). NR 30 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 489 EP + PG 2 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200085 ER PT S AU Zhou, J Yuan, F Liang, ZT AF Zhou, Jian Yuan, Feng Liang, Zuo-Tang BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Drell-Yan Lepton Pair Azimuthal Asymmetry in Hadronic Processes SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin Comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Azimuthal asymmetry; Drell-Yan process; Twist-three approach ID TRANSVERSE-SPIN ASYMMETRIES; DEEP-INELASTIC SCATTERING; FINAL-STATE INTERACTIONS; PARTON DISTRIBUTIONS; ANGULAR-DISTRIBUTION; SINGLE-SPIN; COLLISIONS; DILEPTONS; GAUGE; QCD AB We study the Drell-Yan lepton pair azimuthal asymmetry (cos2 phi) in hadronic scattering process at moderate transverse momentum region, taking into account the contributions from the twist-three quark-gluon correlations from the unpolarized hadrons. This contribution is found to dominate this asymmetry, and is not power suppressed by q(perpendicular to)/Q where q(perpendicular to) and Q are the transverse momentum and invariant mass of the lepton pair. Accordingly, the Lam-Tung relation will be violated at this momentum region. C1 [Zhou, Jian; Yuan, Feng] Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA. [Yuan, Feng] Brookhaven Natl Lab, RIKENBNL Res Ctr, Upton, NY 11973 USA. [Liang, Zuo-Tang] Shandong Univ, Sch Phys, Jinan 250100, Peoples R China. RP Zhou, J (reprint author), Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA. EM Jzhou@lbl.gov; fyuan@lbl.gov RI Yuan, Feng/N-4175-2013 FU U.S. Department of Energy [DE-AC02-05CH11231]; National Natural Science Foundation of China [10525523]; China Scholarship Council FX We thank Jianwei Qiu and Werner Vogelsang for interesting discussions. This work was supported in part by the U.S. Department of Energy under contract DE-AC02-05CH11231 and the National Natural Science Foundation of China under the approval No. 10525523. J.Z. is partially supported by China Scholarship Council. NR 36 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 503 EP + PG 2 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200088 ER PT S AU Vogelsang, W AF Vogelsang, Werner BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI QCD Corrections in Transversely Polarized Scattering SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Nucleon spin structure; Soft-gluon resummation; Single-spin asymmetry ID DEEP-INELASTIC SCATTERING; CROSS-SECTIONS; HARD-SCATTERING; SPIN ASYMMETRY; RESUMMATION; COLLISIONS; EVOLUTION AB We discuss two recent calculations of higher-order QCD corrections to scattering of transversely polarized hadrons. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Vogelsang, W (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. EM wvogelsang@bnl.gov NR 29 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 507 EP 512 PG 6 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200089 ER PT S AU Meissner, S Metz, A Schlegel, M AF Meissner, Stephan Metz, Andreas Schlegel, Marc BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Properties and Applications of GTMDs SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin Comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Deep Inelastic Scattering; Spin and Polarization Effects; Parton Model AB We present first results from our analysis of the most general quark-quark correlator of the nucleon, which can be parameterized in terms of so-called generalized transverse momentum dependent parton distributions. These results include the first complete parameterization of the nucleon GPDs and TMDs as well as new results on possible nontrivial relations between them. C1 [Meissner, Stephan] Ruhr Univ Bochum, Inst Theoret Phys 2, D-44780 Bochum, Germany. [Metz, Andreas] Temple Univ, Dept Phys, Philadelphia, PA 19122 USA. [Schlegel, Marc] Theory Ctr, Jefferson Lab, Newport News, VA 23606 USA. RP Meissner, S (reprint author), Ruhr Univ Bochum, Inst Theoret Phys 2, D-44780 Bochum, Germany. EM stephan.meissner@tp2.rub.de; metza@temple.edu; schlegel@jlab.org FU Verbundforschung "Hadronen und Kerne" of the BMBF; Deutsche Forschungsgemeinschaft (DFG) FX This work has partially been supported by the Verbundforschung "Hadronen und Kerne" of the BMBF and by the Deutsche Forschungsgemeinschaft (DFG). NR 7 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 539 EP + PG 2 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200095 ER PT S AU Schlegel, M Metz, A AF Schlegel, M. Metz, A. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Two-Photon Exchange in (Semi-)Inclusive DIS SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin Comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Two Photon Exchange; Inclusive DIS; SIDIS ID INELASTIC SCATTERING; DISTRIBUTIONS AB In this note we consider effects of a TWo-Photon Exchange (TPE) in inclusive DIS and semi-inclusive DIS (SIDIS). In particular, transverse single spin asymmetries are generated in inclusive DIS if more than one photon is exchanged between the lepton and the hadron. We briefly summarize the TPE in DIS in the parton model and extend our approach to SEDIS, where a new leading twist sin(2 phi) contribution to the longitudinal beam spin asymmetry shows up. Possible TPE effects for the Sivers and the Collins asymmetries in SIDIS are power-suppressed. C1 [Schlegel, M.] Ctr Theory, Jefferson Lab, Newport News, VA 23606 USA. [Metz, A.] Temple Univ, Dept Phys, Philadelphia, PA 19122 USA. RP Schlegel, M (reprint author), Ctr Theory, Jefferson Lab, Newport News, VA 23606 USA. EM schlegel@jlab.org; metza@temple.edu NR 19 TC 2 Z9 2 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 543 EP + PG 2 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200096 ER PT S AU Lin, HW AF Lin, Huey-Wen BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI A Review of Nucleon Spin Calculations in Lattice QCD SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Lattice QCD; nucleon spin structures; form factors; GPDs ID ELECTROMAGNETIC FORM-FACTORS; TWIST-2 OPERATORS; MATRIX-ELEMENTS AB We review recent progress on lattice calculations of nucleon spin structure, including the parton distribution functions, form factors, generalization parton distributions, and recent developments in lattice techniques. C1 Jefferson Lab, Newport News, VA 23606 USA. RP Lin, HW (reprint author), Jefferson Lab, 12000 Jefferson Ave, Newport News, VA 23606 USA. EM hwlin@jlab.org NR 26 TC 3 Z9 3 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 552 EP 557 PG 6 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200098 ER PT S AU Boyle, K AF Boyle, Kieran CA PHENIX Collaboration BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Recent Results and Future Prospects for the PHENIX Spin Program SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Proton structure; Proton spin AB The PHENIX spin program studies the spin structure of the proton through longitudinally and transversely polarized proton collisions at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory. The PHENIX detector is well suited to measure many final state particles, including pi(0), pi(+), direct photons and muons. Recent pi(0) A(LL) results have been shown to significantly constrain the gluon polarization. Large transversely polarized data sets from 2006 and 2008 will allow better understanding of the proton's transverse spin structure. We review recent results, show new results and discuss future prospects. C1 [Boyle, Kieran; PHENIX Collaboration] RIKEN BNL Res Ctr, Brookhaven Natl Lab, Upton, NY 11973 USA. RP Boyle, K (reprint author), RIKEN BNL Res Ctr, Brookhaven Natl Lab, POB 5000, Upton, NY 11973 USA. EM kboyle@bnl.gov NR 17 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 558 EP 563 PG 6 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200099 ER PT S AU Zihlmann, B AF Zihlmann, B. CA HERMES COLLABORATION BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Experimental overview of Generalized Parton Distribution results from HERMES SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE GPD; DVCS; Nucleon structure ID VIRTUAL COMPTON-SCATTERING; NUCLEON AB Over the course of more than a decade the HERMES experiment has accumulated a wealth of data with electron and positron beams on various gaseous targets from Hydrogen up to Xenon. In addition, the beams and targets can be polarized. This data set is viewed in the context of Generalized Parton Distributions, a theoretical formalism with an explicit three dimensional view of the structure of the nucleon. It provides a link between experimental observables and the total angular momentum of the quarks in the nucleon. C1 [Zihlmann, B.] Jefferson Lab, Newport News, VA 23606 USA. RP Zihlmann, B (reprint author), Jefferson Lab, 12000 Jefferson Ave, Newport News, VA 23606 USA. EM zihlmann@jlab.org NR 17 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 597 EP 602 PG 6 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200107 ER PT S AU Riordan, S AF Riordan, Seamus BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Measurements of the Electric Form Factor of the Neutron at High Momentum Transfer SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE neutron; form factors; electric form factor; sachs AB The electric and magnetic form factors of the nucleon provide experimental access to the underlying charge and magnetic moment distributions of quarks. We have measured the electric form factor of the neutron at four kinematic points between 1.2 and 3.5 GeV(2) in Hall A at Jefferson Lab. This more than doubles the momentum transfer region for which this quantity has previously been measured, providing new information on the structure of the neutron. Preliminary results for G(E)(n) at Q(2) = 1.7, 2.5, and 3.5 GeV(2) were presented and were compared with QCD-based models and phenomenological approaches. C1 Univ Virginia, CEBAF Ctr F206, Jefferson Lab, Newport News, VA 23606 USA. RP Riordan, S (reprint author), Univ Virginia, CEBAF Ctr F206, Jefferson Lab, 12000 Jefferson Ave, Newport News, VA 23606 USA. EM riordan@jlab.org NR 8 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 615 EP 618 PG 4 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200111 ER PT S AU Dong, X AF Dong, Xin CA STAR Collaboration BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Polarization Measurements of Hyperons and Vector Mesons in Heavy Ion Collisions at STAR SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Heavy Ion Collisions; Global Polarization; Spin Alignment; Hyperons; Vector Mesons ID TIME PROJECTION CHAMBER AB Particles produced in non-central relativistic heavy ion collisions could become globally polarized due to the initial large orbital angular momentum and QCD spin-orbital coupling. Measurements of the polarization w.r.t. various kinematic planes may give insight into the mechanisms by which the polarization arises. We report the polarization measurements of Lambda((Lambda) over bar), and spin alignment of K(+) and phi w.r.t. the reaction plane in Au+Au collisions at RHIC. In addition the spin alignment of the K(+) and phi can be extracted w.r.t. a second plane, the production plane, which gives insight into the possible size of polarization phenomena in the production dynamics of vector mesons, is also reported. C1 [Dong, Xin; STAR Collaboration] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Dong, X (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, MS70R0319,1 Cyclotron Rd, Berkeley, CA 94720 USA. EM XDong@lbl.gov NR 11 TC 0 Z9 0 U1 3 U2 7 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 652 EP 655 PG 4 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200117 ER PT S AU Sichtermann, E AF Sichtermann, Ernst CA STAR Collaboration BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Longitudinal Spin Transfer of Lambda and (Lambda)over-bar Hyperons in Polarized Proton-Proton Collisions at root s=200 GeV SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Spin transfer; Lambda polarization ID STAR AB The longitudinal spin transfer D(LL) of Lambda and (Lambda) over bar hyperons produced with large transverse momenta P(T) in polarized proton-proton collisions is sensitive to the helicity distribution functions of strange quarks and anti-quarks, and to polarized fragmentation functions. This contribution reports a measurement of the longitudinal spin transfer D(LL) in the inclusive production of Lambda and (Lambda) over bar hyperons at central rapidities in polarized proton-proton collisions at a center of mass energy of root s = 200 GeV. The data were collected with the STAR experiment at RHIC and correspond to approximate to 3pb(-1) luminosity and a approximate to 50% beam polarization. C1 [Sichtermann, Ernst; STAR Collaboration] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. RP Sichtermann, E (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM EPSichtermann@lbl.gov NR 13 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 660 EP 663 PG 4 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200119 ER PT S AU Bazilevsky, A Alekseev, I Bravar, A Bunce, G Boyle, K Camacho, CM Dharmawardane, V Gill, R Huang, H Liu, H Makdisi, Y Morozov, B Nakagawa, L Okada, H Svirida, D Sivertz, M Zelenski, A AF Bazilevsky, A. Alekseev, I. Bravar, A. Bunce, G. Boyle, K. Camacho, C. M. Dharmawardane, V. Gill, R. Huang, H. Liu, H. Makdisi, Y. Morozov, B. Nakagawa, L. Okada, H. Svirida, D. Sivertz, M. Zelenski, A. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Precision Measurements of the Proton Beam Absolute Polarization With RHIC Polarimeters SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin Comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Elastic scattering; spin; coulomb nuclear interference; polarized proton AB We discuss the beam polarization measurement strategy at RHIC with achieved relative precision of better than 5%. C1 [Bazilevsky, A.; Bunce, G.; Gill, R.; Huang, H.; Makdisi, Y.; Morozov, B.; Okada, H.; Sivertz, M.; Zelenski, A.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Alekseev, I.; Svirida, D.] Inst Theoret & Expt Phys, Moscow 117259, Russia. [Bravar, A.] Univ Geneva, CH-1205 Geneva, Switzerland. [Boyle, K.; Nakagawa, L.] RIKEN BNL, Res Ctr, Upton, NY 11973 USA. [Camacho, C. M.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Dharmawardane, V.; Liu, H.] New Mexico State Univ, Las Cruces, NM 88003 USA. [Nakagawa, L.] RIKEN, Saitama 3510198, Japan. RP Bazilevsky, A (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. RI Alekseev, Igor/J-8070-2014; Svirida, Dmitry/R-4909-2016 OI Alekseev, Igor/0000-0003-3358-9635; NR 6 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 723 EP + PG 2 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200132 ER PT S AU Makdisi, Y Atoian, G Bazilevski, A Bunce, G Gill, R Huang, H Morozov, B Sivertz, M Zelenski, A AF Makdisi, Y. Atoian, G. Bazilevski, A. Bunce, G. Gill, R. Huang, H. Morozov, B. Sivertz, M. Zelenski, A. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Towards Improved Proton Polarimetry at RHIC SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Silicon detectors; polarimeters; beam polarization AB The RHIC polarized proton collider polarimeters employ the analyzing power in p-Carbon elastic scattering in the Coulomb Nuclear Interference region to measure the proton beam polarization. These are calibrated by the polarized hydrogen jet target that measures the absolute beam polarization utilizing the pp elastic scattering process in the CNI region. This paper describes the status of these polarimeters and the efforts employed to improve the performance in terms of better resolution, rate handling capability, and reduced systematic uncertainties. C1 [Makdisi, Y.; Atoian, G.; Bazilevski, A.; Bunce, G.; Gill, R.; Huang, H.; Morozov, B.; Sivertz, M.; Zelenski, A.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Makdisi, Y (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 3 TC 0 Z9 0 U1 1 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 727 EP 730 PG 4 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200133 ER PT S AU Zelenski, A Bazilevski, A Bunce, G Gill, R Huang, H Mahler, G Makdisi, Y Morozov, B Nemesure, S Russo, T Steski, D Sivertz, M AF Zelenski, A. Bazilevski, A. Bunce, G. Gill, R. Huang, H. Mahler, G. Makdisi, Y. Morozov, B. Nemesure, S. Russo, T. Steski, D. Sivertz, M. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI The RHIC p-Carbon CNI Polarimeter Upgrade For The Beam Polarization And Intensity Measurements SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Polarimeters AB Proton polarization measurements in the AGS and RHIC (Relativistic Heavy Ion Collider at the beam energies 24-250 GeV) are based on proton-carbon and proton-proton elastic scattering in the Coulomb Nuclear Interference (CNI) region. Polarimeter operation in the scanning mode also gives polarization profile and beam intensity profile (beam emittance) measurements. Bunch by bunch emittance measurement is a very powerful tool for machine setup. Presently, the polarization and beam intensity profile measurements (in both vertical and horizontal planes) are restricted by the long target switching time and possible target destruction during this complicated motion. The RHIC polarimeters were operated near the limit of the counting rate for present silicon strip detectors. The ongoing polarimeter upgrade for the 2009 ran will address all these problems. The upgrade should allow significant reduction of the polarization measurement errors by making feasible the complete polarization measurements, which includes polarization profiles in both the horizontal and vertical planes. C1 [Zelenski, A.; Bazilevski, A.; Bunce, G.; Gill, R.; Huang, H.; Mahler, G.; Makdisi, Y.; Morozov, B.; Nemesure, S.; Russo, T.; Steski, D.; Sivertz, M.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Zelenski, A (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 731 EP 734 PG 4 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200134 ER PT S AU Ptitsyn, V AF Ptitsyn, V. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Polarized Beams at EICs SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE electron-ion collider; beam polarization; electron spin; proton spin; figure-8 ring AB Designs of future electron-ion colliders (EIC) are presently under development at BNL and TJNAF. Polarized beams of electrons, protons and light ions are essential feature of those designs. The talk reviews approaches and techniques used in the EIC designs for delivering high-energy polarized beams and describes existing challenges. C1 Brookhaven Natl Lab, Collider Accelerator Dept, Upton, NY 11973 USA. RP Ptitsyn, V (reprint author), Brookhaven Natl Lab, Collider Accelerator Dept, Upton, NY 11973 USA. NR 17 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 735 EP 740 PG 6 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200135 ER PT S AU Bogacz, A Chevtsov, P Derbenev, Y Krafft, G Zhang, Y AF Bogacz, A. Chevtsov, P. Derbenev, Y. Krafft, G. Zhang, Y. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Electron Spin Rotation And Matching Scheme For ELIC, A High-Luminosity Ring-Ring Electron-Ion Collider SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Electron-Ion Collider; Spin dynamics; Spin rotators AB A unique design feature of a polarized Electron-Ion Collider (ELIC) based on CEBAF is its Figure-8 shaped storage rings for both electrons and ions, which significantly simplifies beam polarization maintenance and manipulation. The CEBAF accelerator is used as a full energy injector of polarized electron beams into the electron storage ring. While electron polarization is maintained vertical in arcs of the ring, a stable longitudinal spin at four collision points is achieved through vertical crossing bending magnets, solenoid spin rotators, and horizontal orbit bends. Spin matching technique needs to be implemented in order to enhance quantum self-polarization and minimize depolarization effects. In this paper, we also discuss several important issues related to the use of positron beams, radiative polarization and quantum depolarization effects, as well as spin in ELIC. C1 [Bogacz, A.; Chevtsov, P.; Derbenev, Y.; Krafft, G.; Zhang, Y.] Jefferson Lab, Newport News, VA 23606 USA. RP Bogacz, A (reprint author), Jefferson Lab, Newport News, VA 23606 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 741 EP 744 PG 4 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200136 ER PT S AU Higinbotham, DW AF Higinbotham, D. W. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Electron Spin Precession at CEBAF SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Polarized Electron; Spin Precession ID BEAMS AB The nuclear physics experiments at the Thomas Jefferson National Accelerator Facility often require longitudinally polarized electrons to be simultaneously delivered to three experimental halls. The degree of longitudinal polarization to each hall varies as function of the accelerator settings, making it challenging in certain situations to deliver a high degree of longitudinal polarization to all the halls simultaneously. Normally, the degree of longitudinal polarization the halls receive is optimized by changing the initial spin direction at the beginning of the machine with a Wien filter. Herein, it is shown that it is possible to further improve the degree of longitudinal polarization for multiple experimental halls by redistributing the energy gain of the CEBAF linacs while keeping the total energy gain fixed. C1 Jefferson Lab, Newport News, VA 23606 USA. RP Higinbotham, DW (reprint author), Jefferson Lab, 12000 Jefferson Ave, Newport News, VA 23606 USA. NR 6 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 751 EP 754 PG 4 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200139 ER PT S AU Montag, C Bai, M MacKay, WW Roser, T Abreu, N Ahrens, L Barton, D Beebe-Wang, J Blaskiewicz, M Brennan, JM Brown, KA Bruno, D Bunce, G Calaga, R Cameron, P Connolly, R D'Ottavio, T Drees, A Fedotov, AV Fischer, W Ganetis, G Gardner, C Glenn, J Hayes, T Huang, H Ingrassia, P Kayran, DA Kewisch, J Lee, RC Lin, F Litvinenko, VN Luccio, AU Luo, Y Makdisi, Y Malitsky, N Marr, G Marusic, A Michnoff, R Morris, J Oerter, B Pilat, F Pile, P Robert-Demolaize, G Russo, T Satogata, T Schultheiss, C Sivertz, M Smith, K Tepikian, S Trbojevic, D Tsoupas, N Tuozzolo, J Zaltsman, A Zelenski, A Zeno, K Zhang, SY AF Montag, C. Bai, M. MacKay, W. W. Roser, T. Abreu, N. Ahrens, L. Barton, D. Beebe-Wang, J. Blaskiewicz, M. Brennan, J. M. Brown, K. A. Bruno, D. Bunce, G. Calaga, R. Cameron, P. Connolly, R. D'Ottavio, T. Drees, A. Fedotov, A. V. Fischer, W. Ganetis, G. Gardner, C. Glenn, J. Hayes, T. Huang, H. Ingrassia, P. Kayran, D. A. Kewisch, J. Lee, R. C. Lin, F. Litvinenko, V. N. Luccio, A. U. Luo, Y. Makdisi, Y. Malitsky, N. Marr, G. Marusic, A. Michnoff, R. Morris, J. Oerter, B. Pilat, F. Pile, P. Robert-Demolaize, G. Russo, T. Satogata, T. Schultheiss, C. Sivertz, M. Smith, K. Tepikian, S. Trbojevic, D. Tsoupas, N. Tuozzolo, J. Zaltsman, A. Zelenski, A. Zeno, K. Zhang, S. Y. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI RHIC Polarized Proton Performance in Run-8 SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE RHIC performance AB During Run-8, the Relativistic Heavy Ion Collider (RHIC) provided collisions of spin-polarized proton beams at two interaction regions. Physics data were taken with vertical orientation of the beam polarization, which in the "Yellow" RHIC ring was significantly lower than in previous years. We present recent developments and improvements as well as the luminosity and polarization performance achieved during Run-8, and we discuss possible causes of the not as high as previously achieved polarization performance of the "Yellow" ring. C1 [Montag, C.; Bai, M.; MacKay, W. W.; Roser, T.; Abreu, N.; Ahrens, L.; Barton, D.; Beebe-Wang, J.; Blaskiewicz, M.; Brennan, J. M.; Brown, K. A.; Bruno, D.; Bunce, G.; Calaga, R.; Cameron, P.; Connolly, R.; D'Ottavio, T.; Drees, A.; Fedotov, A. V.; Fischer, W.; Ganetis, G.; Gardner, C.; Glenn, J.; Hayes, T.; Huang, H.; Ingrassia, P.; Kayran, D. A.; Kewisch, J.; Lee, R. C.; Lin, F.; Litvinenko, V. N.; Luccio, A. U.; Luo, Y.; Makdisi, Y.; Malitsky, N.; Marr, G.; Marusic, A.; Michnoff, R.; Morris, J.; Oerter, B.; Pilat, F.; Pile, P.; Robert-Demolaize, G.; Russo, T.; Satogata, T.; Schultheiss, C.; Sivertz, M.; Smith, K.; Tepikian, S.; Trbojevic, D.; Tsoupas, N.; Tuozzolo, J.; Zaltsman, A.; Zelenski, A.; Zeno, K.; Zhang, S. Y.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Montag, C (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. RI Kayran, Dmitry/E-1876-2013 OI Kayran, Dmitry/0000-0002-1156-4384 NR 6 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 755 EP 758 PG 4 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200140 ER PT S AU Luccio, AU AF Luccio, Alfredo U. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI SPINK, A Thin Elements Spin Tracking Code SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Polarized Beams AB spink is a spin tracking code for spin polarized particles. The code tracks both trajectories in 3D and spin. It works using thick element modeling from MAD and thin element modeling based on the BMT equation to track spin. The code is written in Fortran and typically runs on a Linux platform, either sequentially or MPI-parallel. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Luccio, AU (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 12 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 759 EP 762 PG 4 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200141 ER PT S AU MacKay, WW AF MacKay, W. W. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Effect of Various Errors on the Spin Tune and Stable Spin Axis SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Polarized ion beams; RHIC; spin; polarization AB Even though RHIC has two full Siberian snakes in each ring, there are various perturbations to the ideal case including orbit errors at the snakes, experiment solenoids, injection bumps, and interlaced horizontal-vertical bumps at the hydrogen jet polarimeter. These errors can cause depolarization by shifting the spin tune and tilting the stable spin direction away from vertical. Tilting of the stable spin axis can enhance horizontal depolarizing resonances. This paper presents preliminary results for some of these error scenarios, as well as their impact on the stable spin directions at STAR and PHENIX. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP MacKay, WW (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 763 EP 766 PG 4 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200142 ER PT S AU Huang, H Ahrens, LA Bai, M Brown, K Gardner, C Glenn, JW Lin, F Luccio, AU MacKay, WW Roser, T Tepikian, S Tsoupas, N Yip, K Zelenski, A Zeno, K AF Huang, H. Ahrens, L. A. Bai, M. Brown, K. Gardner, C. Glenn, J. W. Lin, F. Luccio, A. U. MacKay, W. W. Roser, T. Tepikian, S. Tsoupas, N. Yip, K. Zelenski, A. Zeno, K. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Fighting the Residual Polarization Loss in the AGS SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE polarized protons; acceleration; spin AB A dual partial snake scheme has been used for AGS polarized proton operation for several years. It has provided polarized proton beams with 1.5 x 10(11) protons per bunch and 65% polarization for the RHIC spin program. There is still residual polarization loss due to both snake resonances and horizontal resonances as shown in the data. Several schemes were tested or proposed in the AGS to mitigate the loss, such as putting horizontal tune into the spin tune gap, injection into a accelerating bucket, and tune jump across the horizontal resonances. This paper presents the experiment and simulation results and analyses. C1 [Huang, H.; Ahrens, L. A.; Bai, M.; Brown, K.; Gardner, C.; Glenn, J. W.; Lin, F.; Luccio, A. U.; MacKay, W. W.; Roser, T.; Tepikian, S.; Tsoupas, N.; Yip, K.; Zelenski, A.; Zeno, K.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Huang, H (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. RI Yip, Kin/D-6860-2013 OI Yip, Kin/0000-0002-8576-4311 NR 4 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 767 EP 770 PG 4 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200143 ER PT S AU Bai, M Chao, A Roser, T AF Bai, M. Chao, A. Roser, T. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Simulation of Spin Interference and Spin Echo SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin Comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE spin echo; resonance jump; rf spin rotator AB Successively jumping across a depolarization resonance twice produces interesting spin dynamics effects. The dynamics involves an interplay among four parameters of depolarization resonance strength E, the jump size in spin tune, the time duration between the two jumps and the spin tune spread of the beam. By adjusting these parameters, the beam polarization after the second jump exhibits a wealth of effects of constructive interference, destructive interferences and spin echo. A simulation code is written to study these effects. Subtleties such as control of numerical noise and how to prepare the beam polarization condition at the launch are resolved. The simulation results are compared with analysis [Chao/Courant, PRST-AB, 2007]. Experiments are proposed for AGS and RHIC. C1 [Bai, M.; Roser, T.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Chao, A.] Stanford Univ, Dept Phys, Stanford, CA 94305 USA. RP Bai, M (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 7 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 785 EP + PG 2 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200147 ER PT S AU Courant, ED AF Courant, E. D. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Spin Resonance Strength Calculations SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Polarized beams; spin resonances AB In calculating the strengths of depolarizing resonances it may be convenient to reformulate the equations of spin motion in a coordinate system based on the actual trajectory of the particle, as introduced by Kondratenko, rather than the conventional one based on a reference orbit. It is shown that resonance strengths calculated by the conventional and the revised formalisms are identical. Resonances induced by radiofrequency dipoles or solenoids are also treated; with rf dipoles it is essential to consider not only the direct effect of the dipole but also the contribution from oscillations induced by it. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Courant, ED (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 13 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 795 EP 800 PG 6 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200149 ER PT S AU Shatunov, YM Mane, SR Ptitsyn, VI AF Shatunov, Yu. M. Mane, S. R. Ptitsyn, V. I. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Analysis of Data for Stored Polarized Beams Using a Spin Flipper SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin Comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE polarized beams; spin flippers; spin resonances; circular accelerators AB We employ the ASPIRRIN program to fit recent measurements of spin flip resonance widths, made using a radial field rf dipole spin flipper, for stored beam of polarized protons and deuterons at the COSY storage ring. We obtain a good fit to the data. C1 [Shatunov, Yu. M.] Budker Inst Nucl Phys, Novosibirsk 630090, Russia. [Mane, S. R.] Convergent Comp Inc, Shoreham, NY 11786 USA. [Ptitsyn, V. I.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Shatunov, YM (reprint author), Budker Inst Nucl Phys, Novosibirsk 630090, Russia. EM vadimp@bnl.gov FU U. S. Department of Energy [DE-AC02-98CH10886] FX V. Ptitsyn is an employee of Brookhaven Science Associates, LLC and his work was funded under Contract No. DE-AC02-98CH10886 with the U. S. Department of Energy. NR 7 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 813 EP + PG 2 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200153 ER PT S AU Bai, M Roser, T Bunce, G Gill, R AF Bai, M. Roser, T. Bunce, G. Gill, R. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Driven Spin Coherent Precession at RHIC SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE spin coherent precession; single isolated spin resonance AB In a circular accelerator, exciting a coherent spin precession can be used to measure the spin precession tune, which is critical for understanding spin dynamics of the polarized beam. This can be achieved by driving the polarized beam with an rf dipole at an oscillating frequency f(res) in the vicinity of the beam spin precession frequency f(s) I namely, f(res) approximate to f(s). The driven coherent spin precession was measured with the RHIC Coulomb Nuclear Interference polarimeter using a carbon target. This paper presents the spin coherent precession observed with polarized proton beam at the BNL RHIC. Both experimental data and its application for spin tune measurement are discussed. C1 [Bai, M.; Roser, T.; Bunce, G.; Gill, R.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Bai, M (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. EM mbai@bnl.gov; roser@bnl.gov NR 6 TC 0 Z9 0 U1 1 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 817 EP 820 PG 4 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200154 ER PT S AU Zelenski, A Kponou, A Ritter, J Belov, A Zubets, V AF Zelenski, A. Kponou, A. Ritter, J. Belov, A. Zubets, V. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI The RHIC Polarized H- Source SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin Comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Polarized Ion Sources AB The depolarization factors in the multi-step spin-transfer polarization technique and basic limitations on maximum polarization in the Optically-Pumped Polarized H- Ion Source (OPPIS) are discussed. Results of simulations and experimental studies of the Sona-transition polarization transfer process are presented. The experimentally observed polarization oscillations and polarization maximum peak were reproduced in simulations. Detailed studies of polarization losses in the RHIC OPPIS and the source parameters optimization resulted in the OPPIS polarization increase to 86-90%. This contributed to increasing polarization in the AGS and RHIC to 65 similar to 70%. C1 [Zelenski, A.; Kponou, A.; Ritter, J.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Belov, A.; Zubets, V.] RAS, INR, Moscow 117312, Russia. RP Zelenski, A (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. EM zelenski@bnl.gov; belov@inr.ru NR 4 TC 0 Z9 0 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 847 EP + PG 2 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200160 ER PT S AU Pierce, J Crabb, D Zhao, JK AF Pierce, Josh Crabb, Don Zhao, J. K. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Dynamically Polarized Sample for Neutron Scattering At the Spallation Neutron Source SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin Comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Polarized Target; Neutron Scattering; Neutron Diffraction ID SUBUNIT AB The recently constructed Spallation Neutron Source at the Oak Ridge National Laboratory is quickly becoming the world's leader in neutron scattering sciences. In addition to the world's most intense pulsed neutron source, we are continuously constructing state of the art neutron scattering instruments as well as sample environments to address today and tomorrow's challenges in materials research. The Dynamically Polarized Sample project at the SNS is aimed at taking maximum advantage of polarized neutron scattering from polarized samples, especially biological samples that are abundant in hydrogen. Polarized neutron scattering will allow us drastically increase the signal to noise ratio in experiments such as neutron protein crystallography. The DPS project is near completion and all key components have been tested. Here we report the current status of the project. C1 [Pierce, Josh; Zhao, J. K.] Oak Ridge Natl Lab, Spallat Neutron Source, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA. [Crabb, Don] Univ Virginia, Dept Phys, Charlottesville, VA 22904 USA. RP Pierce, J (reprint author), Oak Ridge Natl Lab, Spallat Neutron Source, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA. EM piercejj@ornl.gov; dgc3q@galileo.phys.virginia.edu; zhaoj@ornl.gov RI Zhao, Jinkui/B-7872-2013 OI Zhao, Jinkui/0000-0002-7756-1952 FU U.S. Department of Energy [DE-AC05-00OR22725] FX SNS is managed by UT-Battelle, LLC, under contract DE-AC05-00OR22725 for the U.S. Department of Energy. NR 7 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 872 EP + PG 2 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200165 ER PT S AU Thorn, C AF Thorn, Craig BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Precision Polarimetry of Solid HD Photonuclear Targets at LEGS SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Polarized nuclear target; NMR; HD nuclear polarization ID NMR POLARIZATION MEASUREMENT; Q-METER AB We have constructed and operated a NMR polarimeter for high-accuracy measurements of hydrogen and deuterium polarization in a frozen-spin solid HD photonuclear physics target. The heart of this polarimeter is a pair of crossed (orthogonal) RF coils that form a transformer that responds only to precessing spins in the sample. We have performed a complete electronic circuit analysis of this crossed coil polarimeter (CC-Meter), and have determined the optimum conditions for its operation. From this analysis, which is confirmed by NMR measurements on hydrogen and deuterium in solid HD, we conclude that the CC-meter can be operated to give a very high signal-to-noise ratio (SNR) for thermal equilibrium polarization while also producing a highly linear response for fully polarized targets. In general, we find that a well-designed and properly constructed CC-Meter can provide a larger SNR at similar non-linearity, compared to the more commonly used Q-meter. We have used this polarimeter to produce H polarization measurements for a new, high precision determination of the GDH integral for the proton. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Thorn, C (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. EM thorn@bnl.gov NR 9 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 880 EP 885 PG 6 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200167 ER PT S AU Keith, CD AF Keith, C. D. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI The JLab Frozen Spin Target SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Dynamic Nuclear Polarization; Polarized Target; Frozen Spin Target ID CLAS AB A polarized, frozen spin target has been designed and constructed at Jefferson Lab for use inside the CEBAF Large Acceptance Spectrometer. Protons in TEMPO-doped butanol are polarized via dynamic nuclear polarization (DNP) to approximately 90% using microwaves and an external, 5 T solenoid magnet. The target sample is then cooled to approximately 30 mK while an internal 0.56 T superconducting magnet is used to maintain the polarization. Relaxation times in excess of 3500 hours have been observed. C1 Jefferson Lab, Target Grp, Newport News, VA 23606 USA. RP Keith, CD (reprint author), Jefferson Lab, Target Grp, Newport News, VA 23606 USA. EM ckeith@jlab.org NR 3 TC 0 Z9 0 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 886 EP 889 PG 4 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200168 ER PT S AU Stutzman, ML Grames, J AF Stutzman, Marcy L. Grames, Joseph BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Superlattice Photocathode Damage Analysis SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Polarized electron source; superlattice photocathode; surface charge limit AB Jefferson Lab uses 100kV DC high voltage photoguns with high polarization strained superlattice GaAs photocathodes to achieve electron beam polarization over 80%. The photocathode is subjected to back-bombardment from ionized residual gasses during operation. We present surface analyses using transmission electron microscopy (TEM) and secondary ion mass spectrometry (SIMS) to characterize photocathode damage. C1 [Stutzman, Marcy L.; Grames, Joseph] Thomas Jefferson Natl Accelerator Facil, Ctr Injectors & Sources, Newport News, VA 23606 USA. RP Stutzman, ML (reprint author), Thomas Jefferson Natl Accelerator Facil, Ctr Injectors & Sources, 12000 Jefferson Ave, Newport News, VA 23606 USA. EM marcy@jlab.org; grames@jlab.org NR 7 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 1032 EP 1037 PG 6 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200192 ER PT S AU Moy, A Maruyama, T Zhou, F Brachmann, A AF Moy, Aaron Maruyama, T. Zhou, F. Brachmann, A. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI MBE Growth of Graded Structures for Polarized Electron Emitters SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin Comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Polarized electrons; high polarization photocathode AB SVT Associates, in collaboration with SLAC, has investigated two novel photocathode design concepts in an effort to increase polarization and quantum efficiency. AlGaAsSb/GaAs superlattice photocathodes were fabricated to explore the effect of antimony on device operation. In the second approach, an internal electrical field was created within the superlattice active layer by varying the aluminum composition in AlGaAs/GaAs. A 25% increase in quantum efficiency as a result of the gradient was observed. C1 [Moy, Aaron] SVT Associates, 7620 Execut Dr, Eden Prairie, MN 55344 USA. [Maruyama, T.; Zhou, F.; Brachmann, A.] SLAC, Natl Accelerator Lab, Menlo Pk, CA USA. RP Moy, A (reprint author), SVT Associates, 7620 Execut Dr, Eden Prairie, MN 55344 USA. EM moy@svta.com; zhoufeng@slac.stanford.edu FU U.S. DOE [DE-FG02-07ER86329, DE-FG02-07ER86330] FX This research was supported by Small Business Innovation Research (SBIR) grants from the U.S. DOE under contracts DE-FG02-07ER86329 and DE-FG02-07ER86330. NR 7 TC 3 Z9 3 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 1038 EP + PG 2 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200193 ER PT S AU Smedley, J Rao, T Wang, ED AF Smedley, John Rao, Triveni Wang, Erdong BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI K2CsSb Cathode Development SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin Comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Photoemission; Photocathode AB K2CsSb is an attractive photocathode for high current applications. With a quantum efficiency of >4% at 532mn and >10% at 355nm, it is the only cathode to have demonstrated an average current of 35mA in an accelerator environment. We describe ongoing cathode development work for the energy recovery linac being constructed at BNL. Several cathodes have been created on both copper and stainless steel substrates, and their spatial uniformity and spectral response have been characterized. Preliminary lifetime measurements have been performed at high average current densities (>1 mA/mm(2)). C1 [Smedley, John; Rao, Triveni] Brookhaven Natl Lab, Bldg 911, Upton, NY 11973 USA. [Wang, Erdong] Peking Univ, Inst Heavy Ion Phys, Beijing 100871, Peoples R China. RP Smedley, J (reprint author), Brookhaven Natl Lab, Bldg 911, Upton, NY 11973 USA. EM smedley@bnl.gov; triveni@bnl.gov FU U.S DOE [DE-AC02-98CH10886] FX The authors would like to thank John Walsh for his expert technical assistance, Andrew Burrill for his advice and Veljko Radeka for his support. This work funded by the U.S DOE under Contract No. DE-AC02-98CH10886. NR 4 TC 1 Z9 1 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 1062 EP + PG 2 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200197 ER PT S AU Hernandez-Garcia, C Benson, SV Biallas, G Bullard, D Evtushenko, P Jordan, K Klopf, M Sexton, D Tennant, C Walker, R Williams, G AF Hernandez-Garcia, C. Benson, S. V. Biallas, G. Bullard, D. Evtushenko, P. Jordan, K. Klopf, M. Sexton, D. Tennant, C. Walker, R. Williams, G. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI DC High Voltage Conditioning of Photoemission Guns at Jefferson Lab FEL SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE DC high voltage; photoemission electron guns; krypton processing AB DC high voltage photoemission electron guns with GaAs photocathodes have been used to produce polarized electron beams for nuclear physics experiments for about 3 decades with great success. In the late 1990s, Jefferson Lab adopted this gun technology for a free electron laser (FEL), but to assist with high bunch charge operation, considerably higher bias voltage is required compared to the photoguns used at the Jefferson Lab Continuous Electron Beam Accelerator Facility. The FEL gun has been conditioned above 400kV several times, albeit encountering non-trivial challenges with ceramic insulators and field emission from electrodes. Recently, high voltage processing with krypton gas was employed to process very stubborn field emitters. This work presents a summary of the high voltage techniques used to high voltage condition the Jefferson Lab FEL photoemission gun. C1 [Hernandez-Garcia, C.; Benson, S. V.; Biallas, G.; Bullard, D.; Evtushenko, P.; Jordan, K.; Klopf, M.; Sexton, D.; Tennant, C.; Walker, R.; Williams, G.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. RP Hernandez-Garcia, C (reprint author), Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. EM chgarcia@jlab.org; felman@jlab.org; biallas@jlab.org; bullard@jlab.org; klopf@jlab.org; tennant@jlab.org; richard@jlab.org NR 6 TC 8 Z9 8 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 1071 EP 1076 PG 6 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200199 ER PT S AU Pozdeyev, E Kayran, D Litvinenko, VN AF Pozdeyev, E. Kayran, D. Litvinenko, V. N. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Ion bombardment in RF guns SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE electron source; ion bombardment; cathode; RF gun; ponderomotive potential AB We use the ponderomotive potential of the RF field to study the motion of ions in an RF gun. We apply this method to the BNL 1/2-cell SRF photogun and demonstrate that a significant portion of the ions produced in the gun can reach the cathode if no special precautions are taken. Also, we propose simple mitigation techniques that can reduce the rate of ion bombardment. C1 [Pozdeyev, E.; Kayran, D.; Litvinenko, V. N.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Pozdeyev, E (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. RI Kayran, Dmitry/E-1876-2013 OI Kayran, Dmitry/0000-0002-1156-4384 NR 6 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 1109 EP 1113 PG 5 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200206 ER PT S AU Kewisch, J Ben-Zvi, I Rao, T Burrill, A Pate, D Wang, E Todd, R Bluem, H Holmes, D Schultheiss, T AF Kewisch, Jorg Ben-Zvi, Ilan Rao, Triveni Burrill, Andrew Pate, David Wang, Erdong Todd, Rob Bluem, Hans Holmes, Doug Schultheiss, Tom BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI The Polarized SRF Gun Experiment SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin Comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Polarization; electron sources; quantum efficiency AB An experiment is under way to prove the feasibility of a super-conducting RF gun for the production of polarized electrons. We report on the progress of the experiment and on simulations predicting the possibility of success. C1 [Kewisch, Jorg; Ben-Zvi, Ilan; Rao, Triveni; Burrill, Andrew; Pate, David; Wang, Erdong] Brookhaven Natl Lab, Upton, NY 11973 USA. [Todd, Rob; Bluem, Hans; Holmes, Doug; Schultheiss, Tom] Adv Energy Syst, Medford, NY 11763 USA. RP Kewisch, J (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 3 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 1133 EP + PG 2 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200210 ER PT S AU Hansknecht, J Adderley, P Stutzman, ML Poelker, M AF Hansknecht, J. Adderley, P. Stutzman, M. L. Poelker, M. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Sensitive Ion Pump Current Monitoring Using an In-House Built Ion Pump Power Supply SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Ion pump; Polarized electron source AB Ion pumps are common vacuum pumps on DC high voltage photoguns and baked-accelerator beamlines. Commercial ion pump power supplies provide a measure of the electrical current drawn by the pump, but typically have resolution to only similar to 0.1 uA, which corresponds to pressure similar to 10(-9) Torr, a value considerably higher than the minimum pressure required by photoguns and nearby beamline. This submission describes a very sensitive in-house-built ion pump power supply with current monitoring capability good to less than 1nA, and corresponding pressure in the low-10(-11) Torr range. Besides providing "free" pressure monitoring on a scale equivalent to the best available commercial pressure gauges, the ion pump power supply also serves as a sensitive diagnostic for detecting field emission from the photogun cathode electrode and bad electron beam orbits that could diminish photogun operating lifetime. Since its inception, this ion pump power supply has become an invaluable tool for operating the CEBAF polarized electron source. It is also a very useful low-cost diagnostic for ultrahigh vacuum studies in the laboratory. C1 [Hansknecht, J.; Adderley, P.; Stutzman, M. L.; Poelker, M.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. RP Hansknecht, J (reprint author), Thomas Jefferson Natl Accelerator Facil, 12000 Jefferson Ave, Newport News, VA 23606 USA. NR 5 TC 3 Z9 3 U1 1 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 1143 EP 1147 PG 5 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200212 ER PT S AU Rakhman, A Nanda, S Souder, P AF Rakhman, Abdurahim Nanda, Sirish Souder, Paul BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI A Green Fabry-Perot Cavity for Jefferson Lab Hall A Compton Polarimetry SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin Comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Fabry-Perot Cavity; Compton Polarimetry AB A green laser (CW, 532 nm) based Fabry-Perot cavity for high precision Compton Polarimetry is under development in Hall A of the Jefferson Laboratory. In this paper, we present the principle and the preliminary studies for our test cavity. C1 [Rakhman, Abdurahim; Souder, Paul] Syracuse Univ, Dept Phys, Syracuse, NY 13244 USA. [Nanda, Sirish] Thomas Jefferson Natl Accelarator Facil, Newport News, VA 23606 USA. RP Rakhman, A (reprint author), Syracuse Univ, Dept Phys, Syracuse, NY 13244 USA. RI Rakhman, Adurahim/K-8146-2012 OI Rakhman, Adurahim/0000-0002-9880-6074 NR 9 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 1165 EP + PG 2 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200216 ER PT S AU Dumas, J Grames, J Voutier, E AF Dumas, J. Grames, J. Voutier, E. BE Crabb, DG Day, DB Liuti, S Zheng, X Poelker, M Prok, Y TI Polarized Positrons at Jefferson Lab SO SPIN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 18th International Spin Physics Symposium CY OCT 06-11, 2008 CL Charlottesville, VA SP Univ Virginia, Brookhaven Natl Lab, European Journal Phys, Int Spin Comm, Int Union Pure & Appl Phys, Jefferson Lab, Old Dominion Univ, RIKEN BNL DE Positron source; polarization transfer; electron sources ID PAIR PRODUCTION; BREMSSTRAHLUNG AB A novel concept for producing polarized positrons at Jefferson Lab using the CEBAF polarized electron photo-injector is presented. This approach relies on the polarization transfer from low energy highly polarized electrons to positrons via bremsstrahlung followed by pair production in a conversion target. An experiment to test this concept is discussed on the basis of GEANT4 simulations. It is shown that this low energy approach, which benefits from recent advances in high current high polarization electron sources, can yield positron longitudinal polarization up to 40%. C1 [Dumas, J.; Voutier, E.] Univ Grenoble 1, INP, Lab Phys Subatom & Cosmol, IN2P3,CNRS, 53 Rue Martyrs, F-38026 Grenoble, France. [Dumas, J.; Grames, J.] Thomas Jefferson Natl Accelerator Fac, Newport News, VA 23606 USA. RP Dumas, J (reprint author), Univ Grenoble 1, INP, Lab Phys Subatom & Cosmol, IN2P3,CNRS, 53 Rue Martyrs, F-38026 Grenoble, France. NR 14 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0686-5 J9 AIP CONF PROC PY 2009 VL 1149 BP 1184 EP + PG 3 WC Physics, Applied; Physics, Nuclear SC Physics GA BMO71 UT WOS:000273153200220 ER PT S AU Chen, JP AF Chen, Jian-ping BE Chen, JP Melnitchouk, W Slifer, K TI Highlights of JLab Neutron (He-3) Spin Program SO SPIN STRUCTURE AT LONG DISTANCE, WORKSHOP PROCEEDINGS SE AIP Conference Proceedings LA English DT Proceedings Paper CT Spin Structure at Long Distance Workshop CY MAR 12-13, 2009 CL Jefferson Lab, Newport News, VA SP JSA Initiat Fund, Univ New Hampshire HO Jefferson Lab DE Spin; neutron; polarized He-3; JLab; sum rule; polarizability ID QUARK-HADRON DUALITY; DEPENDENT STRUCTURE FUNCTIONS; ELECTRON-PROTON-SCATTERING; STRONG-COUPLING CONSTANT; SUM-RULES; PRECISION-MEASUREMENT; NUCLEON; Q(2)-DEPENDENCE; MODEL; DISTRIBUTIONS AB Nucleon spin structure has been an active, exciting and intriguing subject of interest for the last three decades. Recent precision spin-structure data from Jefferson Lab have significantly advanced our knowledge of nucleon structure at low Q(2). In particular, it has improved our understanding of spin sum rules and higher-twist effects. First, results of neutron spin sum rules and polarizabilities in the low to intermediate Q(2) region are presented. Comparison with theoretical calculations, in particular with Chiral Perturbation Theory (ChPT) calculations, are discussed. Surprising disagreements of ChPT calculations with experimental results on the generalized spin polarizability, delta(n)(LT), were found. Results of precision measurements of the g(2) structure function to study higher-twist effects are presented. The data indicate a significant higher-twist (twist-3 or higher) effect. The second moment of the spin structure functions and the twist-3 matrix element d(2) results were extracted. The high Q(2) result was compared with a Lattice QCD calculation. Finally, other neutron spin structure results, such as the resonance data for quark-hadron duality study and a precision measurement of the neutron spin asymmetry in the valence quark (high-x) region are briefly discussed. C1 Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. RP Chen, JP (reprint author), Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. NR 59 TC 1 Z9 1 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0692-6 J9 AIP CONF PROC PY 2009 VL 1155 BP 63 EP 72 PG 10 WC Physics, Nuclear SC Physics GA BME86 UT WOS:000272045200007 ER PT S AU Sandorfi, AM Hoblit, S Ardashev, K Bade, C Bartalini, O Blecher, M Caracappa, A D'Angelo, A d'Angelo, A Di Salvo, R Fantini, A Gibson, C Gluckler, H Hicks, K Honig, A Kageya, T Khandaker, M Kistner, OC Kizigul, S Kucuker, S Lehmann, A Lowry, M Lucas, M Mahon, J Miceli, L Moricciani, D Norum, B Pap, M Preedom, B Seyfarth, H Schaerf, C Stroher, H Thorn, CE Whisnant, CS Wang, K Wei, X AF Sandorfi, A. M. Hoblit, S. Ardashev, K. Bade, C. Bartalini, O. Blecher, M. Caracappa, A. D'Angelo, A. d'Angelo, A. Di Salvo, R. Fantini, A. Gibson, C. Glueckler, H. Hicks, K. Honig, A. Kageya, T. Khandaker, M. Kistner, O. C. Kizigul, S. Kucuker, S. Lehmann, A. Lowry, M. Lucas, M. Mahon, J. Miceli, L. Moricciani, D. Norum, B. Pap, M. Preedom, B. Seyfarth, H. Schaerf, C. Stroeher, H. Thorn, C. E. Whisnant, C. S. Wang, K. Wei, X. BE Chen, JP Melnitchouk, W Slifer, K TI Recent Polarization Experiments and the GDH Sum Rule SO SPIN STRUCTURE AT LONG DISTANCE, WORKSHOP PROCEEDINGS SE AIP Conference Proceedings LA English DT Proceedings Paper CT Spin Structure at Long Distance Workshop CY MAR 12-13, 2009 CL Jefferson Lab, Newport News, VA SP JSA Initiat Fund, Univ New Hampshire HO Jefferson Lab DE GDH Sum Rule; Polarization; photo-production ID MAGNETIC MOMENTS; NUCLEON AB Measurements of the spin-difference cross sections entering the Gerasimov-Drell-Hearn (GDH) sum rule are reviewed. Results on the proton from Mainz and Bonn exceeded the GDH prediction by 22 mu b, requiring as yet unmeasured canceling high-energy components. Recent experiments with frozen-spin HD at BNL reveal a different angular dependence for pi(0) production than what was assumed in Mainz analyses in lieu of direct measurements and integrate to a value that is 18 mu b lower, suggesting a rapid convergence. Results for deuterium over limited energy ranges are consistent with large canceling contributions but differ from existing state of the art calculations. C1 [Sandorfi, A. M.; Hoblit, S.; Caracappa, A.; Kistner, O. C.; Lowry, M.; Miceli, L.; Thorn, C. E.; Wei, X.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Sandorfi, AM (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RI Fantini, Alessia/J-2478-2012; moricciani, dario/C-5002-2014; D'Angelo, Annalisa/A-2439-2012; OI Fantini, Alessia/0000-0002-4643-4731; moricciani, dario/0000-0002-1737-8857; D'Angelo, Annalisa/0000-0003-3050-4907; Di Salvo, Rachele/0000-0002-2162-714X NR 22 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0692-6 J9 AIP CONF PROC PY 2009 VL 1155 BP 73 EP 81 PG 9 WC Physics, Nuclear SC Physics GA BME86 UT WOS:000272045200008 ER PT S AU Sulkosky, VA AF Sulkosky, Vincent A. BE Chen, JP Melnitchouk, W Slifer, K TI Neutron ((3)He) Spin Structure Functions at Low Q(2) SO SPIN STRUCTURE AT LONG DISTANCE, WORKSHOP PROCEEDINGS SE AIP Conference Proceedings LA English DT Proceedings Paper CT Spin Structure at Long Distance Workshop CY MAR 12-13, 2009 CL Jefferson Lab, Newport News, VA SP JSA Initiat Fund, Univ New Hampshire HO Jefferson Lab DE neutron; spin structure; chiral perturbation theory ID DEEP-INELASTIC SCATTERING; VIRTUAL COMPTON-SCATTERING; HEARN SUM-RULE; RADIATIVE-CORRECTIONS; MAGNETIC MOMENTS; JEFFERSON-LAB; HALL-A; NUCLEON; PROTON; DEUTERON AB Experiment E97-110 was performed at the Thomas Jefferson National Accelerator Facility to provide a precise measurement of the (3)He spin structure functions at low Q(2) from 0.02 to 0.3 [GeV/c](2). A longitudinally-polarized electron beam was scattered from a longitudinally or transversely polarized (3)He target. From these data, we have extracted moments of the neutron and (3)He spin structure functions at very low momentum transfers. These data allow us to make a benchmark check of Chiral Perturbation Theory calculations in a region where they are expected to be valid. In these proceedings, the experimental details are discussed and preliminary results on the first moments of the g(1) (x, Q(2)) and g(2) (x, Q(2)) structure functions are presented. C1 Jefferson Lab, Newport News, VA 23606 USA. RP Sulkosky, VA (reprint author), Jefferson Lab, 12000 Jefferson Ave,Suite 4, Newport News, VA 23606 USA. NR 34 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0692-6 J9 AIP CONF PROC PY 2009 VL 1155 BP 93 EP 100 PG 8 WC Physics, Nuclear SC Physics GA BME86 UT WOS:000272045200010 ER PT S AU Solvignon, P AF Solvignon, P. BE Chen, JP Melnitchouk, W Slifer, K TI Quark-Hadron Duality in Neutron Spin-Structure and g(2) moments at intermediate Q(2) SO SPIN STRUCTURE AT LONG DISTANCE, WORKSHOP PROCEEDINGS SE AIP Conference Proceedings LA English DT Proceedings Paper CT Spin Structure at Long Distance Workshop CY MAR 12-13, 2009 CL Jefferson Lab, Newport News, VA SP JSA Initiat Fund, Univ New Hampshire HO Jefferson Lab DE Spin-Structure Functions; Quark-hadron Duality; Higher Twists ID DEEP-INELASTIC SCATTERING; NUCLEON STRUCTURE FUNCTIONS; PRECISION-MEASUREMENT; POLARIZED HE-3; DISTRIBUTIONS; ASYMMETRIES; REGION; PROTON; MODEL AB Jefferson Lab experiment E01-012 measured the (3)He spin-structure functions and virtual photon asymmetries in the resonance region in the momentum transfer range 1.0T cultures. This work was performed under the auspices of the US Department of Energy Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-5CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-C02-06NA25396, as well as German Research Foundation (DFG) INST 599/1-1. NR 35 TC 83 Z9 86 U1 2 U2 26 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 1 BP 12 EP U4 DI 10.4056/sigs.761 PG 10 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17CW UT WOS:000207916300003 PM 21304632 ER PT J AU Land, M Pukall, R Abt, B Goker, M Rohde, M Del Rio, TG Tice, H Copeland, A Cheng, JF Lucas, S Chen, F Nolan, M Bruce, D Goodwin, L Pitluck, S Ivanova, N Mavromatis, K Ovchinnikova, G Pati, A Chen, A Palaniappan, K Hauser, L Chang, YJ Jefferies, CC Saunders, E Brettin, T Detter, JC Han, C Chain, P Bristow, J Eisen, JA Markowitz, V Hugenholtz, P Kyrpides, NC Klenk, HP Lapidus, A AF Land, Miriam Pukall, Ruediger Abt, Birte Goeker, Markus Rohde, Manfred Del Rio, Tijana Glavina Tice, Hope Copeland, Alex Cheng, Jan-Fang Lucas, Susan Chen, Feng Nolan, Matt Bruce, David Goodwin, Lynne Pitluck, Sam Ivanova, Natalia Mavromatis, Konstantinos Ovchinnikova, Galina Pati, Amrita Chen, Amy Palaniappan, Krishna Hauser, Loren Chang, Yun-Juan Jefferies, Cynthia C. Saunders, Elizabeth Brettin, Thomas Detter, John C. Han, Cliff Chain, Patrick Bristow, James Eisen, Jonathan A. Markowitz, Victor Hugenholtz, Philip Kyrpides, Nikos C. Klenk, Hans-Peter Lapidus, Alla TI Complete genome sequence of Beutenbergia cavernae type strain (HKI 0122(T)) SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE mesophile; non-pathogenic; aerobic and microaerophilic; rod-coccus growth cycle; MK-8(H-4); actinomycete; Micrococcineae AB Beutenbergia cavernae (Groth et al. 1999) is the type species of the genus and is of phylogenetic interest because of its isolated location in the actinobacterial suborder Micrococcineae. B. cavernae HKI 0122(T) is a Gram-positive, non-motile, non-spore-forming bacterium isolated from a cave in Guangxi (China). B. cavernae grows best under aerobic conditions and shows a rod-coccus growth cycle. Its cell wall peptidoglycan contains the diagnostic L-lysine <-- L-glutamate interpeptide bridge. Here we describe the features of this organism, together with the complete genome sequence, and annotation. This is the first completed genome sequence from the poorly populated micrococcineal family Beutenbergiaceae, and this 4,669,183 bp long single replicon genome with its 4225 protein-coding and 53 RNA genes is part of the Genomic Encyclopedia of Bacteria and Archaea project. C1 [Land, Miriam; Del Rio, Tijana Glavina; Tice, Hope; Copeland, Alex; Cheng, Jan-Fang; Lucas, Susan; Chen, Feng; Nolan, Matt; Bruce, David; Goodwin, Lynne; Pitluck, Sam; Ivanova, Natalia; Mavromatis, Konstantinos; Ovchinnikova, Galina; Pati, Amrita; Hauser, Loren; Chang, Yun-Juan; Jefferies, Cynthia C.; Brettin, Thomas; Detter, John C.; Han, Cliff; Chain, Patrick; Bristow, James; Eisen, Jonathan A.; Hugenholtz, Philip; Kyrpides, Nikos C.; Lapidus, Alla] DOE Joint Genome Inst, Walnut Creek, CA USA. [Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jefferies, Cynthia C.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Pukall, Ruediger; Abt, Birte; Goeker, Markus; Klenk, Hans-Peter] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Rohde, Manfred] HZI Helmholtz Ctr Infect Res, Braunschweig, Germany. [Bruce, David; Goodwin, Lynne; Saunders, Elizabeth; Brettin, Thomas; Detter, John C.; Han, Cliff] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA. [Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Lawrence Berkeley Natl Lab, Biol Data Management & Technol Ctr, Berkeley, CA USA. [Chain, Patrick] Lawrence Livermore Natl Lab, Livermore, CA USA. [Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA. RP Lapidus, A (reprint author), DOE Joint Genome Inst, Walnut Creek, CA USA. RI Hauser, Loren/H-3881-2012; Land, Miriam/A-6200-2011; chain, patrick/B-9777-2013; Kyrpides, Nikos/A-6305-2014; Lapidus, Alla/I-4348-2013 OI Land, Miriam/0000-0001-7102-0031; Kyrpides, Nikos/0000-0002-6131-0462; Lapidus, Alla/0000-0003-0427-8731 FU US Department of Energy's Office of Science, Biological and Environmental Research; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; Los Alamos National Laboratory [DE-AC02-06NA25396]; German Research Foundation (DFG) [INST 599/1-1] FX We would like to gratefully acknowledge the help of Katja Steenblock for growing B. cavernae cultures and Susanne Schneider for DNA extraction and quality analysis (both at DSMZ). This work was performed under the auspices of the US Department of Energy's Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396, as well as German Research Foundation (DFG) INST 599/1-1. NR 17 TC 6 Z9 138 U1 1 U2 3 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 1 BP 21 EP 28 PG 8 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17CW UT WOS:000207916300004 PM 21304633 ER PT J AU Copeland, A Spring, S Goker, M Schneider, S Lapidus, A Del Rio, TG Tice, H Cheng, JF Lucas, S Chen, F Nolan, M Bruce, D Goodwin, L Pitluck, S Ivanova, N Mavromatis, K Ovchinnikova, G Pati, A Chen, A Palaniappan, K Land, M Hauser, L Chang, YJ Jeffries, CC Meincke, L Sims, D Brettin, T Detter, JC Han, C Chain, P Bristow, J Eisen, JA Markowitz, V Hugenholtz, P Kyrpides, NC Klenk, HP Lucas, S AF Copeland, Alex Spring, Stefan Goeker, Markus Schneider, Susanne Lapidus, Alla Del Rio, Tijana Glavina Tice, Hope Cheng, Jan-Fang Lucas, Susan Chen, Feng Nolan, Matt Bruce, David Goodwin, Lynne Pitluck, Sam Ivanova, Natalia Mavromatis, Konstantinos Ovchinnikova, Galina Pati, Amrita Chen, Amy Palaniappan, Krishna Land, Miriam Hauser, Loren Chang, Yun-Juan Jeffries, Cynthia C. Meincke, Linda Sims, David Brettin, Thomas Detter, John C. Han, Cliff Chain, Patrick Bristow, Jim Eisen, Jonathan A. Markowitz, Victor Hugenholtz, Philip Kyrpides, Nikos C. Klenk, Hans-Peter Lucas, Susan TI Complete genome sequence of Desulfomicrobium baculatum type strain (X-T) SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE Sulfate reducer; Gram-negative; free-living; non-pathogenic; freshwater; anaerobe; mesophile; Desulfomicrobiaceae ID SULFATE-REDUCING BACTERIA; SULFUR; REDUCTION; GROWTH AB Desulfomicrobium baculatum is the type species of the genus Desulfomicrobium, which is the type genus of the family Desulfomicrobiaceae. It is of phylogenetic interest because of the isolated location of the family Desulfomicrobiaceae within the order Desulfovibrionales. D. baculatum strain X-T is a Gram-negative, motile, sulfate-reducing bacterium isolated from water-saturated manganese carbonate ore. It is strictly anaerobic and does not require NaCl for growth, although NaCl concentrations up to 6% (w/v) are tolerated. The metabolism is respiratory or fermentative. In the presence of sulfate, pyruvate and lactate are incompletely oxidized to acetate and CO2. Here we describe the features of this organism, together with the complete genome sequence and annotation. This is the first completed genome sequence of a member of the deltaproteobacterial family Desulfomicrobiaceae, and this 3,942,657 bp long single replicon genome with its 3494 protein-coding and 72 RNA genes is part of the Genomic Encyclopedia of Bacteria and Archaea project. C1 [Copeland, Alex; Lapidus, Alla; Del Rio, Tijana Glavina; Tice, Hope; Cheng, Jan-Fang; Lucas, Susan; Chen, Feng; Nolan, Matt; Bruce, David; Goodwin, Lynne; Pitluck, Sam; Ivanova, Natalia; Mavromatis, Konstantinos; Ovchinnikova, Galina; Pati, Amrita; Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia C.; Brettin, Thomas; Detter, John C.; Han, Cliff; Chain, Patrick; Bristow, Jim; Eisen, Jonathan A.; Hugenholtz, Philip; Kyrpides, Nikos C.; Lucas, Susan] DOE Joint Genome Inst, Walnut Creek, CA USA. [Spring, Stefan; Goeker, Markus; Schneider, Susanne; Klenk, Hans-Peter] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Bruce, David; Goodwin, Lynne; Meincke, Linda; Sims, David; Brettin, Thomas; Detter, John C.; Han, Cliff] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA. [Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Lawrence Berkeley Natl Lab, Biol Data Management & Technol Ctr, Berkeley, CA USA. [Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia C.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Chain, Patrick] Lawrence Livermore Natl Lab, Livermore, CA USA. [Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA. RP Lucas, S (reprint author), DOE Joint Genome Inst, Walnut Creek, CA USA. RI Kyrpides, Nikos/A-6305-2014; Spring, Stefan/N-6933-2013; Lapidus, Alla/I-4348-2013; Hauser, Loren/H-3881-2012; Land, Miriam/A-6200-2011; chain, patrick/B-9777-2013 OI Kyrpides, Nikos/0000-0002-6131-0462; Spring, Stefan/0000-0001-6247-0938; Lapidus, Alla/0000-0003-0427-8731; Land, Miriam/0000-0001-7102-0031; FU US Department of Energy Office of Science, Biological and Environmental Research; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; Los Alamos National Laboratory [DE-AC02-06NA25396]; German Research Foundation (DFG) [INST 599/1-1] FX We would like to gratefully acknowledge the help of Maren Schroeder (DSMZ) for growing D. baculatum cultures. This work was performed under the auspices of the US Department of Energy Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396 as well as German Research Foundation (DFG) INST 599/1-1. NR 35 TC 8 Z9 9 U1 1 U2 7 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 1 BP 29 EP 37 DI 10.4056/sigs.13134 PG 9 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17CW UT WOS:000207916300005 PM 21304634 ER PT J AU Clum, A Nolan, M Lang, E Del Rio, TG Tice, H Copeland, A Cheng, JF Lucas, S Chen, F Bruce, D Goodwin, L Pitluck, S Ivanova, N Mavromatis, K Mikhailova, N Pati, A Chen, A Palaniappan, K Goker, M Spring, S Land, M Hauser, L Chang, YJ Jeffries, CC Chain, P Bristow, J Eisen, JA Markowitz, V Hugenholtz, P Kyrpides, NC Klenk, HP Lapidus, A AF Clum, Alicia Nolan, Matt Lang, Elke Del Rio, Tijana Glavina Tice, Hope Copeland, Alex Cheng, Jan-Fang Lucas, Susan Chen, Feng Bruce, David Goodwin, Lynne Pitluck, Sam Ivanova, Natalia Mavromatis, Konstantinos Mikhailova, Natalia Pati, Amrita Chen, Amy Palaniappan, Krishna Goeker, Markus Spring, Stefan Land, Miriam Hauser, Loren Chang, Yun-Juan Jeffries, Cynthia C. Chain, Patrick Bristow, Jim Eisen, Jonathan A. Markowitz, Victor Hugenholtz, Philip Kyrpides, Nikos C. Klenk, Hans-Peter Lapidus, Alla TI Complete genome sequence of Acidimicrobium ferrooxidans type strain (ICPT) SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE Moderate thermophile; ferrous-iron-oxidizing; acidophile; Acidomicrobiales AB Acidimicrobium ferrooxidans (Clark and Norris 1996) is the sole and type species of the genus, which until recently was the only genus within the actinobacterial family Acidimicrobiaceae and in the order Acidomicrobiales. Rapid oxidation of iron pyrite during autotrophic growth in the absence of an enhanced CO2 concentration is characteristic for A. ferrooxidans. Here we describe the features of this organism, together with the complete genome sequence, and annotation. This is the first complete genome sequence of the order Acidomicrobiales, and the 2,158,157 bp long single replicon genome with its 2038 protein coding and 54 RNA genes is part of the Genomic Encyclopedia of Bacteria and Archaea project. C1 [Clum, Alicia; Nolan, Matt; Del Rio, Tijana Glavina; Tice, Hope; Copeland, Alex; Cheng, Jan-Fang; Lucas, Susan; Chen, Feng; Pitluck, Sam; Ivanova, Natalia; Mavromatis, Konstantinos; Mikhailova, Natalia; Pati, Amrita; Chain, Patrick; Bristow, Jim; Eisen, Jonathan A.; Hugenholtz, Philip; Kyrpides, Nikos C.; Lapidus, Alla] DOE Joint Genome Inst, Walnut Creek, CA USA. [Lang, Elke; Goeker, Markus; Spring, Stefan; Klenk, Hans-Peter] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Bruce, David; Goodwin, Lynne] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA. [Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Lawrence Berkeley Natl Lab, Biol Data Management & Technol Ctr, Berkeley, CA USA. [Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia C.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Chain, Patrick] Lawrence Livermore Natl Lab, Livermore, CA USA. [Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA. RP Lapidus, A (reprint author), DOE Joint Genome Inst, Walnut Creek, CA USA. RI Hauser, Loren/H-3881-2012; Land, Miriam/A-6200-2011; chain, patrick/B-9777-2013; Kyrpides, Nikos/A-6305-2014; Spring, Stefan/N-6933-2013; Lapidus, Alla/I-4348-2013 OI Land, Miriam/0000-0001-7102-0031; Kyrpides, Nikos/0000-0002-6131-0462; Spring, Stefan/0000-0001-6247-0938; Lapidus, Alla/0000-0003-0427-8731 FU US Department of Energy Office of Science, Biological and Environmental Research; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; Los Alamos National Laboratory [DE-AC02-06NA25396]; German Research Foundation (DFG) [INST 599/1-1] FX We would like to gratefully acknowledge the help of Petra Aumann for growing A. ferrooxidans cultures and Susanne Schneider for DNA extraction and quality analysis (both at DSMZ). This work was performed under the auspices of the US Department of Energy Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396, as well as German Research Foundation (DFG) INST 599/1-1. NR 18 TC 16 Z9 25 U1 2 U2 11 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 1 BP 38 EP 45 DI 10.4056/sigs.1463 PG 8 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17CW UT WOS:000207916300006 PM 21304635 ER PT J AU Land, M Lapidus, A Mayilraj, S Chen, F Copeland, A Del Rio, TG Nolan, M Lucas, S Tice, H Cheng, JF Chertkov, O Bruce, D Goodwin, L Pitluck, S Rohde, M Goker, M Pati, A Ivanova, N Mavromatis, K Chen, A Palaniappan, K Hauser, L Chang, YJ Jeffries, CC Brettin, T Detter, JC Han, C Chain, P Tindall, BJ Bristow, J Eisen, JA Markowitz, V Hugenholtz, P Kyrpides, NC Klenk, HP AF Land, Miriam Lapidus, Alla Mayilraj, Shanmugam Chen, Feng Copeland, Alex Del Rio, Tijana Glavina Nolan, Matt Lucas, Susan Tice, Hope Cheng, Jan-Fang Chertkov, Olga Bruce, David Goodwin, Lynne Pitluck, Sam Rohde, Manfred Goeker, Markus Pati, Amrita Ivanova, Natalia Mavromatis, Konstantinos Chen, Amy Palaniappan, Krishna Hauser, Loren Chang, Yun-Juan Jeffries, Cynthia C. Brettin, Thomas Detter, John C. Han, Cliff Chain, Patrick Tindall, Brian J. Bristow, Jim Eisen, Jonathan A. Markowitz, Victor Hugenholtz, Philip Kyrpides, Nikos C. Klenk, Hans-Peter TI Complete genome sequence of Actinosynnema mirum type strain (101(T)) SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE Synnemata; motile spores; soluble pigments; mesophile; aerobic; aerial and substrate mycelium; nocardicin A producer; Actinosynnemataceae ID PHYLOGENETIC ANALYSIS; NOV; PROPOSAL; GENUS; ACTINOMYCETALES; SACCHAROTHRIX; LENTZEA AB Actinosynnema mirum Hasegawa et al. 1978 is the type species of the genus, and is of phylogenetic interest because of its central phylogenetic location in the Actino-synnemataceae, a rapidly growing family within the actinobacterial suborder Pseudonocardineae. A. mirum is characterized by its motile spores borne on synnemata and as a producer of nocardicin antibiotics. It is capable of growing aerobically and under a moderate CO2 atmosphere. The strain is a Gram-positive, aerial and substrate mycelium producing bacterium, originally isolated from a grass blade collected from the Raritan River, New Jersey. Here we describe the features of this organism, together with the complete genome sequence and annotation. This is the first complete genome sequence of a member of the family Actinosynnemataceae, and only the second sequence from the actinobacterial suborder Pseudonocardineae. The 8,248,144 bp long single replicon genome with its 7100 protein-coding and 77 RNA genes is part of the Genomic Encyclopedia of Bacteria and Archaea project. C1 [Mayilraj, Shanmugam; Goeker, Markus; Tindall, Brian J.; Klenk, Hans-Peter] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia C.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Land, Miriam; Lapidus, Alla; Chen, Feng; Copeland, Alex; Del Rio, Tijana Glavina; Nolan, Matt; Lucas, Susan; Tice, Hope; Cheng, Jan-Fang; Chertkov, Olga; Bruce, David; Goodwin, Lynne; Pitluck, Sam; Pati, Amrita; Ivanova, Natalia; Mavromatis, Konstantinos; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia C.; Brettin, Thomas; Detter, John C.; Han, Cliff; Chain, Patrick; Bristow, Jim; Eisen, Jonathan A.; Hugenholtz, Philip; Kyrpides, Nikos C.] DOE Joint Genome Inst, Walnut Creek, CA USA. [Mayilraj, Shanmugam] Inst Microbial Technol, Chandigarh, India. [Chertkov, Olga; Bruce, David; Goodwin, Lynne; Brettin, Thomas; Detter, John C.; Han, Cliff] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA. [Rohde, Manfred] HZI Helmholtz Ctr Infect Res, Braunschweig, Germany. [Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Lawrence Berkeley Natl Lab, Biol Data Management & Technol Ctr, Berkeley, CA USA. [Chain, Patrick] Lawrence Livermore Natl Lab, Livermore, CA USA. [Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA. RP Klenk, HP (reprint author), DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. RI Hauser, Loren/H-3881-2012; Land, Miriam/A-6200-2011; chain, patrick/B-9777-2013; Kyrpides, Nikos/A-6305-2014; Lapidus, Alla/I-4348-2013 OI Land, Miriam/0000-0001-7102-0031; Kyrpides, Nikos/0000-0002-6131-0462; Lapidus, Alla/0000-0003-0427-8731 FU US Department of Energy's Office of Science, Biological and Environmental Research; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; Los Alamos National Laboratory [DE-AC02-06NA25396]; German Research Foundation (DFG) [INST 599/1-1] FX We gratefully acknowledge the help of Marlen Jando for growing A. mirum cultures and Susanne Schneider for DNA extraction and quality analysis (both at DSMZ). This work was performed under the auspices of the US Department of Energy's Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396, as well as German Research Foundation (DFG) INST 599/1-1. NR 19 TC 24 Z9 34 U1 1 U2 7 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 1 BP 46 EP 53 DI 10.4056/sigs.21137 PG 8 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17CW UT WOS:000207916300007 PM 21304636 ER PT J AU Han, C Spring, S Lapidus, A Del Rio, TG Tice, H Copeland, A Cheng, JF Lucas, S Chen, F Nolan, M Bruce, D Goodwin, L Pitluck, S Ivanova, N Mavromatis, K Mikhailova, N Pati, A Chen, A Palaniappan, K Land, M Hauser, L Chang, YJ Jeffries, CC Saunders, E Chertkov, O Brettin, T Goker, M Rohde, M Bristow, J Eisen, JA Markowitz, V Hugenholtz, P Kyrpides, NC Klenk, HP Detter, JC AF Han, Cliff Spring, Stefan Lapidus, Alla Del Rio, Tijana Glavina Tice, Hope Copeland, Alex Cheng, Jan-Fang Lucas, Susan Chen, Feng Nolan, Matt Bruce, David Goodwin, Lynne Pitluck, Sam Ivanova, Natalia Mavromatis, Konstantinos Mikhailova, Natalia Pati, Amrita Chen, Amy Palaniappan, Krishna Land, Miriam Hauser, Loren Chang, Yun-Juan Jeffries, Cynthia C. Saunders, Elizabeth Chertkov, Olga Brettin, Thomas Goeker, Markus Rohde, Manfred Bristow, Jim Eisen, Jonathan A. Markowitz, Victor Hugenholtz, Philip Kyrpides, Nikos C. Klenk, Hans-Peter Detter, John C. TI Complete genome sequence of Pedobacter heparinus type strain (HIM 762-3(T)) SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE mesophile; strictly aerobic; dry soil; Gram-negative; flexible rods; heparinase producer; Sphingobacteriaceae AB Pedobacter heparinus (Payza and Korn 1956) Steyn et al. 1998 comb. nov. is the type species of the rapidly growing genus Pedobacter within the family Sphingobacteriaceae of the phylum 'Bacteroidetes'. P. heparinus is of interest, because it was the first isolated strain shown to grow with heparin as sole carbon and nitrogen source and because it produces several enzymes involved in the degradation of mucopolysaccharides. All available data about this species are based on a sole strain that was isolated from dry soil. Here we describe the features of this organism, together with the complete genome sequence, and annotation. This is the first report on a complete genome sequence of a member of the genus Pedobacter, and the 5,167,383 bp long single replicon genome with its 4287 protein-coding and 54 RNA genes is part of the Genomic Encyclopedia of Bacteria and Archaea project. C1 [Han, Cliff; Lapidus, Alla; Del Rio, Tijana Glavina; Tice, Hope; Copeland, Alex; Cheng, Jan-Fang; Lucas, Susan; Chen, Feng; Nolan, Matt; Bruce, David; Goodwin, Lynne; Pitluck, Sam; Ivanova, Natalia; Mavromatis, Konstantinos; Mikhailova, Natalia; Pati, Amrita; Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia C.; Chertkov, Olga; Brettin, Thomas; Bristow, Jim; Eisen, Jonathan A.; Hugenholtz, Philip; Kyrpides, Nikos C.; Detter, John C.] DOE Joint Genome Inst, Walnut Creek, CA USA. [Han, Cliff; Bruce, David; Goodwin, Lynne; Saunders, Elizabeth; Chertkov, Olga; Brettin, Thomas; Detter, John C.] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA. [Spring, Stefan; Goeker, Markus; Klenk, Hans-Peter] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Lawrence Berkeley Natl Lab, Biol Data Management & Technol Ctr, Berkeley, CA USA. [Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia C.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Rohde, Manfred] HZI Helmholtz Ctr Infect Res, Braunschweig, Germany. [Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA. RP Detter, JC (reprint author), DOE Joint Genome Inst, Walnut Creek, CA USA. RI Hauser, Loren/H-3881-2012; Land, Miriam/A-6200-2011; Kyrpides, Nikos/A-6305-2014; Spring, Stefan/N-6933-2013; Lapidus, Alla/I-4348-2013 OI Land, Miriam/0000-0001-7102-0031; Kyrpides, Nikos/0000-0002-6131-0462; Spring, Stefan/0000-0001-6247-0938; Lapidus, Alla/0000-0003-0427-8731 FU US Department of Energy Office of Science, Biological and Environmental Research; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; Los Alamos National Laboratory [DE-AC02-06NA25396]; German Research Foundation (DFG) [INST 599/1-1] FX We would like to gratefully acknowledge the help of Maren Schroder for growing P. heparinus cultures and Susanne Schneider for DNA extraction and quality analysis (both at DSMZ) This work was performed under the auspices of the US Department of Energy Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396, as well as German Research Foundation (DFG) INST 599/1-1. NR 24 TC 14 Z9 20 U1 1 U2 3 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 1 BP 54 EP 62 DI 10.4506/sigs.22138 PG 9 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17CW UT WOS:000207916300008 PM 21304637 ER PT J AU Mavromatis, K Ivanova, NN Chen, IMA Szeto, E Markowitz, VM Kyrpides, NC AF Mavromatis, Konstantinos Ivanova, Natalia N. Chen, I-Min A. Szeto, Ernest Markowitz, Victor M. Kyrpides, Nikos C. TI The DOE-JGI Standard Operating Procedure for the Annotations of Microbial Genomes SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE Joint Genome Institute; gene prediction; functional annotation; GeneMark; Metagene; tRNA-Scan; RNAmmer; Rfam; IMG-ER AB The DOE-JGI Microbial Annotation Pipeline (DOE-JGI MAP) supports gene prediction and/or functional annotation of microbial genomes towards comparative analysis with the Integrated Microbial Genome [1] (IMG) system. DOE-JGI MAP annotation is applied on nucleotide sequence datasets included in the IMG-ER (Expert Review) version of IMG via the IMG ER submission site. Users can submit the sequence datasets consisting of one or more contigs in a multi-fasta file. DOE-JGI MAP annotation includes prediction of protein coding and RNA genes, as well as repeats and assignment of product names to these genes. C1 [Mavromatis, Konstantinos; Ivanova, Natalia N.; Kyrpides, Nikos C.] Joint Genome Inst, Dept Energy, Genome Biol Program, Walnut Creek, CA USA. [Chen, I-Min A.; Szeto, Ernest; Markowitz, Victor M.] Lawrence Berkeley Natl Lab, Biol Data Management & Technol Ctr, Berkeley, CA USA. RP Mavromatis, K (reprint author), Joint Genome Inst, Dept Energy, Genome Biol Program, Walnut Creek, CA USA. RI Kyrpides, Nikos/A-6305-2014; OI Kyrpides, Nikos/0000-0002-6131-0462; Ivanova, Natalia/0000-0002-5802-9485 FU US Department of Energy Office of Science, Biological and Environmental Research; University of California, Lawrence Livermore National Laboratory [W-7405-Eng-48]; Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; Los Alamos National Laboratory [DE-AC02-06NA25396] FX The work presented in this article was performed under the auspices of the US Department of Energy Office of Science, Biological and Environmental Research Program and by the University of California, Lawrence Livermore National Laboratory under Contract No. W-7405-Eng-48, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231 and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396. NR 15 TC 126 Z9 127 U1 1 U2 6 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 1 BP 63 EP 67 DI 10.4056/sigs.632 PG 5 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17CW UT WOS:000207916300009 PM 21304638 ER PT J AU Field, D Sterk, P Kyrpides, N Kottmann, R Glockner, FO Hirschman, L Garrity, GM Wooley, J Gilna, P AF Field, Dawn Sterk, Peter Kyrpides, Nikos Kottmann, Renzo Gloeckner, Frank Oliver Hirschman, Lynette Garrity, George M. Wooley, John Gilna, Paul TI Meeting Report from the Genomic Standards Consortium (GSC) Workshops 6 and 7 SO STANDARDS IN GENOMIC SCIENCES LA English DT Article AB This report summarizes the proceedings of the 6th and 7th workshops of the Genomic Standards Consortium (GSC), held back-to-back in 2008. GSC 6 focused on furthering the activities of GSC working groups, GSC 7 focused on outreach to the wider community. GSC 6 was held October 10-14, 2008 at the European Bioinformatics Institute, Cambridge, United Kingdom and included a two-day workshop focused on the refinement of the Genomic Contextual Data Markup Language (GCDML). GSC 7 was held as the opening day of the International Congress on Metagenomics 2008 in San Diego California. Major achievements of these combined meetings included an agreement from the International Nucleotide Sequence Database Consortium (INSDC) to create a "MIGS" keyword for capturing "Minimum Information about a Genome Sequence" compliant information within INSDC (DDBJ/EMBL/Genbank) records, launch of GCDML 1.0, MIGS compliance of the first set of "Genomic Encyclopedia of Bacteria and Archaea" project genomes, approval of a proposal to extend MIGS to 16S rRNA sequences within a "Minimum Information about an Environmental Sequence", finalization of plans for the GSC eJournal, "Standards in Genomic Sciences" (SIGS), and the formation of a GSC Board. Subsequently, the GSC has been awarded a Research Coordination Network (RCN4GSC) grant from the National Science Foundation, held the first SIGS workshop and launched the journal. The GSC will also be hosting outreach workshops at both ISMB 2009 and PSB 2010 focused on "Metagenomics, Metadata and MetaAnalysis" (M(3)). Further information about the GSC and its range of activities can be found at http://gensc.org, including videos of all the presentations at GSC 7. C1 [Field, Dawn; Sterk, Peter] NERC Ctr Ecol & Hydrol, Oxford, England. [Sterk, Peter] Wellcome Trust Sanger Inst, Pathogen Sequencing Unit, Cambridge, England. [Kyrpides, Nikos] DOE Joint Genome Inst, Genome Biol Program, Walnut Creek, CA USA. [Kyrpides, Nikos] EBI, EMBL, Cambridge, England. [Kottmann, Renzo; Gloeckner, Frank Oliver] Jacobs Univ Bremen, Bremen, Germany. [Hirschman, Lynette] Mitre Corp, Ctr Informat Technol, Bedford, MA USA. [Garrity, George M.] Michigan State Univ, Dept Microbiol & Mol Genet, E Lansing, MI 48824 USA. [Wooley, John; Gilna, Paul] Univ Calif San Diego, La Jolla, CA 92093 USA. [Kottmann, Renzo; Gloeckner, Frank Oliver] Max Planck Inst Marine Microbiol, Microbial Genom Grp, Bremen, Germany. RP Field, D (reprint author), NERC Ctr Ecol & Hydrol, Oxford, England. RI Garrity, George/F-7551-2013; Gilna, Paul/I-3608-2016; Kyrpides, Nikos/A-6305-2014; OI Garrity, George/0000-0002-4465-7034; Gilna, Paul/0000-0002-6542-0191; Kyrpides, Nikos/0000-0002-6131-0462; Sterk, Peter/0000-0003-1668-7778 FU NERC [NE/3521773/1, NE/E007325/1]; CAMERA FX The authors acknowledge the invaluable contributions of all of the workshop participants. This workshop was funded by a NERC International Opportunities Fund Award (NE/3521773/1) and Peter Sterk is now supported by NERC grant (NE/E007325/1) to DF. GSC 7 was made possible with co-funding by CAMERA. We offer many special thanks to local host Peter Sterk and the EBI for hosting GSC 6 workshop and John Wooley and Paul Gilna for inviting the GSC to MG08. Finally, special thanks go to George Garrity, Editor-In-Chief, for launching SIGS and giving the GSC an exciting new platform for productively working as a community. NR 8 TC 2 Z9 2 U1 1 U2 3 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 1 BP 68 EP 71 DI 10.4056/sigs.25165 PG 4 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17CW UT WOS:000207916300010 PM 21304639 ER PT J AU Mavrommatis, K Pukall, R Rohde, C Chen, F Sims, D Brettin, T Kuske, C Detter, JC Han, C Lapidus, A Copeland, A Del Rio, TG Nolan, M Lucas, S Tice, H Cheng, JF Bruce, D Goodwin, L Pitluck, S Ovchinnikova, G Pati, A Ivanova, N Chen, A Palaniappan, K Chain, P D'haeseleer, P Goker, M Bristow, J Eisen, JA Markowitz, V Hugenholtz, P Rohde, M Klenk, HP Kyrpides, NC AF Mavrommatis, Konstantinos Pukall, Ruediger Rohde, Christine Chen, Feng Sims, David Brettin, Thomas Kuske, Cheryl Detter, John C. Han, Cliff Lapidus, Alla Copeland, Alex Del Rio, Tijana Glavina Nolan, Matt Lucas, Susan Tice, Hope Cheng, Jan-Fang Bruce, David Goodwin, Lynne Pitluck, Sam Ovchinnikova, Galina Pati, Amrita Ivanova, Natalia Chen, Amy Palaniappan, Krishna Chain, Patrick D'haeseleer, Patrik Goeker, Markus Bristow, Jim Eisen, Jonathan A. Markowitz, Victor Hugenholtz, Philip Rohde, Manfred Klenk, Hans-Peter Kyrpides, Nikos C. TI Complete genome sequence of Cryptobacterium curtum type strain (12-3(T)) SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE oral infections; opportunistic pathogenic; periodontitis; non-spore-former; anaerobic; asaccharolytic; Coriobacteriaceae AB Cryptobacterium curtum Nakazawa et al. 1999 is the type species of the genus, and is of phylogenetic interest because of its very distant and isolated position within the family Coriobacteriaceae. C. curtum is an asaccharolytic, opportunistic pathogen with a typical occurrence in the oral cavity, involved in dental and oral infections like periodontitis, inflammations and abscesses. Here we describe the features of this organism, together with the complete genome sequence, and annotation. This is the first complete genome sequence of the actinobacterial family Coriobacteriaceae, and this 1,617,804 bp long single replicon genome with its 1364 protein-coding and 58 RNA genes is part of the Genomic Encyclopedia of Bacteria and Archaea project. C1 [Mavrommatis, Konstantinos; Chen, Feng; Sims, David; Brettin, Thomas; Kuske, Cheryl; Detter, John C.; Han, Cliff; Lapidus, Alla; Copeland, Alex; Del Rio, Tijana Glavina; Nolan, Matt; Lucas, Susan; Tice, Hope; Cheng, Jan-Fang; Bruce, David; Goodwin, Lynne; Pitluck, Sam; Ovchinnikova, Galina; Pati, Amrita; Ivanova, Natalia; Chain, Patrick; D'haeseleer, Patrik; Bristow, Jim; Eisen, Jonathan A.; Hugenholtz, Philip; Kyrpides, Nikos C.] DOE Joint Genome Inst, Walnut Creek, CA 94598 USA. [Pukall, Ruediger; Rohde, Christine; Goeker, Markus; Klenk, Hans-Peter] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Sims, David; Brettin, Thomas; Kuske, Cheryl; Detter, John C.; Han, Cliff; Bruce, David; Goodwin, Lynne] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA. [Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA. [Chain, Patrick; D'haeseleer, Patrik] Lawrence Livermore Natl Lab, Livermore, CA USA. [Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA. [Rohde, Manfred] HZI Helmholtz Ctr Infect Res, Braunschweig, Germany. RP Kyrpides, NC (reprint author), DOE Joint Genome Inst, Walnut Creek, CA 94598 USA. RI chain, patrick/B-9777-2013; Kyrpides, Nikos/A-6305-2014; Lapidus, Alla/I-4348-2013 OI D'haeseleer, Patrik/0000-0003-0007-8150; Kyrpides, Nikos/0000-0002-6131-0462; Lapidus, Alla/0000-0003-0427-8731 FU US Department of Energy Office of Science, Biological and Environmental Research Program; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; University of California, Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; University of California, Los Alamos National Laboratory [DE-AC02-06NA25396]; German Research Foundation (DFG) [INST 599/1-1] FX We would like to gratefully acknowledge the help of Gabriele Gehrich-Schroter for growing C. curtum cultures and Susanne Schneider for DNA extraction and quality analysis (both at DSMZ). This work was performed under the auspices of the US Department of Energy Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396, as well as German Research Foundation (DFG) INST 599/1-1 NR 27 TC 8 Z9 8 U1 1 U2 2 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 2 BP 93 EP 100 DI 10.4056/sigs.12260 PG 8 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17CY UT WOS:000207916500002 PM 21304644 ER PT J AU Mavrommatis, K Gronow, S Saunders, E Land, M Lapidus, A Copeland, A Del Rio, TG Nolan, M Lucas, S Chen, F Tice, H Cheng, JF Bruce, D Goodwin, L Pitluck, S Pati, A Ivanova, N Chen, A Palaniappan, K Chain, P Hauser, L Chang, YJ Jeffries, CD Brettin, T Detter, JC Han, C Bristow, J Goker, M Rohde, M Eisen, JA Markowitz, V Kyrpides, NC Klenk, HP Hugenholtz, P AF Mavrommatis, Konstantinos Gronow, Sabine Saunders, Elizabeth Land, Miriam Lapidus, Alla Copeland, Alex Del Rio, Tijana Glavina Nolan, Matt Lucas, Susan Chen, Feng Tice, Hope Cheng, Jan-Fang Bruce, David Goodwin, Lynne Pitluck, Sam Pati, Amrita Ivanova, Natalia Chen, Amy Palaniappan, Krishna Chain, Patrick Hauser, Loren Chang, Yun-Juan Jeffries, Cynthia D. Brettin, Thomas Detter, John C. Han, Cliff Bristow, James Goeker, Markus Rohde, Manfred Eisen, Jonathan A. Markowitz, Victor Kyrpides, Nikos C. Klenk, Hans-Peter Hugenholtz, Philip TI Complete genome sequence of Capnocytophaga ochracea type strain (VPI 2845T) SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE gliding; capnophilic; periodontitis; gingivitis; Flavobacteriaceae AB Capnocytophaga ochracea (Prevot et al. 1956) Leadbetter et al. 1982 is the type species of the genus Capnocytophaga. It is of interest because of its location in the Flavobacteriaceae, a genomically not yet charted family within the order Flavobacteriales. The species grows as fusiform to rod shaped cells which tend to form clumps and are able to move by gliding. C. ochracea is known as a capnophilic (CO(2)-requiring) organism with the ability to grow under anaerobic as well as aerobic conditions (oxygen concentration larger than 15%), here only in the presence of 5% CO(2). Strain VPI 2845(T), the type strain of the species, is portrayed in this report as a gliding, Gram-negative bacterium, originally isolated from a human oral cavity. Here we describe the features of this organism, together with the complete genome sequence, and annotation. This is the first completed genome sequence from the flavobacterial genus Capnocytophaga, and the 2,612,925 bp long single replicon genome with its 2193 protein-coding and 59 RNA genes is a part of the Genomic Encyclopedia of Bacteria and Archaea project. C1 [Mavrommatis, Konstantinos; Saunders, Elizabeth; Land, Miriam; Lapidus, Alla; Copeland, Alex; Del Rio, Tijana Glavina; Nolan, Matt; Lucas, Susan; Chen, Feng; Tice, Hope; Cheng, Jan-Fang; Bruce, David; Goodwin, Lynne; Pitluck, Sam; Pati, Amrita; Ivanova, Natalia; Chain, Patrick; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.; Brettin, Thomas; Detter, John C.; Han, Cliff; Bristow, James; Eisen, Jonathan A.; Kyrpides, Nikos C.; Hugenholtz, Philip] DOE Joint Genome Inst, Walnut Creek, CA 94598 USA. [Gronow, Sabine; Goeker, Markus; Klenk, Hans-Peter] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Saunders, Elizabeth; Bruce, David; Goodwin, Lynne; Brettin, Thomas; Detter, John C.; Han, Cliff] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA. [Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA. [Chain, Patrick] Lawrence Livermore Natl Lab, Livermore, CA USA. [Rohde, Manfred] HZI Helmholtz Ctr Infect Res, Braunschweig, Germany. [Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA. RP Hugenholtz, P (reprint author), DOE Joint Genome Inst, Walnut Creek, CA 94598 USA. RI Hauser, Loren/H-3881-2012; Land, Miriam/A-6200-2011; chain, patrick/B-9777-2013; Kyrpides, Nikos/A-6305-2014; Lapidus, Alla/I-4348-2013 OI Land, Miriam/0000-0001-7102-0031; Kyrpides, Nikos/0000-0002-6131-0462; Lapidus, Alla/0000-0003-0427-8731 FU US Department of Energy Office of Science, Biological and Environmental Research Program; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; University of California, Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; University of California, Los Alamos National Laboratory [DE-AC02-06NA25396]; German Research Foundation (DFG) [INST 599/1-1] FX We would like to gratefully acknowledge the help of Sabine Welnitz for growing C. ochracea cultures and Susanne Schneider for DNA extraction and quality analysis (both at DSMZ). This work was performed under the auspices of the US Department of Energy Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396, well as German Research Foundation (DFG) INST 599/1-1. NR 34 TC 7 Z9 7 U1 1 U2 3 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 2 BP 101 EP 109 DI 10.4056/sigs.15195 PG 9 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17CY UT WOS:000207916500003 PM 21304645 ER PT J AU Ivanova, N Sikorski, J Sims, D Brettin, T Detter, JC Han, C Lapidus, A Copeland, A Del Rio, TG Nolan, M Chen, F Lucas, S Tice, H Cheng, JF Bruce, D Goodwin, L Pitluck, S Pati, A Mavromatis, K Chen, A Palaniappan, K D'haeseleer, P Chain, P Bristow, J Eisen, JA Markowitz, V Hugenholtz, P Goker, M Pukall, R Klenk, HP Kyrpides, NC AF Ivanova, Natalia Sikorski, Johannes Sims, David Brettin, Thomas Detter, John C. Han, Cliff Lapidus, Alla Copeland, Alex Del Rio, Tijana Glavina Nolan, Matt Chen, Feng Lucas, Susan Tice, Hope Cheng, Jan-Fang Bruce, David Goodwin, Lynne Pitluck, Sam Pati, Amrita Mavromatis, Konstantinos Chen, Amy Palaniappan, Krishna D'haeseleer, Patrik Chain, Patrick Bristow, Jim Eisen, Jonathan A. Markowitz, Victor Hugenholtz, Philip Goeker, Markus Pukall, Ruediger Klenk, Hans-Peter Kyrpides, Nikos C. TI Complete genome sequence of Sanguibacter keddieii type strain (ST-74(T)) SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE blood isolate; aerobic; facultative anaerobic; Sanguibacteraceae; Micrococcineae AB Sanguibacter keddieii is the type species of the genus Sanguibacter, the only genus within the family of Sanguibacteraceae. Phylogenetically, this family is located in the neighborhood of the genus Oerskovia and the family Cellulomonadaceae within the actinobacterial suborder Micrococcineae. The strain described in this report was isolated from blood of apparently healthy cows. Here we describe the features of this organism, together with the complete genome sequence, and annotation. This is the first complete genome sequence of a member of the family Sanguibacteraceae, and the 4,253,413 bp long single replicon genome with its 3735 protein-coding and 70 RNA genes is part of the Genomic Encyclopedia of Bacteria and Archaea project. C1 [Ivanova, Natalia; Sims, David; Brettin, Thomas; Detter, John C.; Han, Cliff; Lapidus, Alla; Copeland, Alex; Del Rio, Tijana Glavina; Nolan, Matt; Chen, Feng; Lucas, Susan; Tice, Hope; Cheng, Jan-Fang; Bruce, David; Goodwin, Lynne; Pitluck, Sam; Pati, Amrita; Mavromatis, Konstantinos; D'haeseleer, Patrik; Chain, Patrick; Bristow, Jim; Eisen, Jonathan A.; Hugenholtz, Philip; Kyrpides, Nikos C.] DOE Joint Genome Inst, Walnut Creek, CA 94598 USA. [Sikorski, Johannes; Goeker, Markus; Pukall, Ruediger; Klenk, Hans-Peter] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Brettin, Thomas; Detter, John C.; Han, Cliff; Bruce, David; Goodwin, Lynne] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA. [Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA. [D'haeseleer, Patrik; Chain, Patrick] Lawrence Livermore Natl Lab, Livermore, CA USA. [Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA. RP Kyrpides, NC (reprint author), DOE Joint Genome Inst, Walnut Creek, CA 94598 USA. RI chain, patrick/B-9777-2013; Lapidus, Alla/I-4348-2013; Kyrpides, Nikos/A-6305-2014; OI Lapidus, Alla/0000-0003-0427-8731; Kyrpides, Nikos/0000-0002-6131-0462; D'haeseleer, Patrik/0000-0003-0007-8150 FU US Department of Energy Office of Science, Biological and Environmental Research Program; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; University of California, Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; University of California, Los Alamos National Laboratory [DE-AC02-06NA25396]; German Research Foundation (DFG) [INST 599/1-1] FX We would like to gratefully acknowledge the help of Katja Steenblock for growing S. keddieii ST-74T cultures, Susanne Schneider for DNA extraction, and Brian J. Tindall for chemotaxonomic advice (all at DSMZ). This work was performed under the auspices of the US Department of Energy Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396 as well as German Research Foundation (DFG) INST 599/1-1. NR 29 TC 6 Z9 14 U1 1 U2 3 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 2 BP 110 EP 118 DI 10.4056/sigs16197 PG 9 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17CY UT WOS:000207916500004 PM 21304646 ER PT J AU Copeland, A Lapidus, A Del Rio, TG Nolan, M Lucas, S Chen, F Tice, H Cheng, JF Bruce, D Goodwin, L Pitluck, S Mikhailova, N Pati, A Ivanova, N Mavromatis, K Chen, A Palaniappan, K Chain, P Land, M Hauser, L Chang, YJ Jeffries, CD Chertkov, O Brettin, T Detter, JC Han, C Ali, Z Tindall, BJ Goker, M Bristow, J Eisen, JA Markowitz, V Hugenholtz, P Kyrpides, NC Klenk, HP AF Copeland, Alex Lapidus, Alla Del Rio, Tijana Glavina Nolan, Matt Lucas, Susan Chen, Feng Tice, Hope Cheng, Jan-Fang Bruce, David Goodwin, Lynne Pitluck, Sam Mikhailova, Natalia Pati, Amrita Ivanova, Natalia Mavromatis, Konstantinos Chen, Amy Palaniappan, Krishna Chain, Patrick Land, Miriam Hauser, Loren Chang, Yun-Juan Jeffries, Cynthia D. Chertkov, Olga Brettin, Thomas Detter, John C. Han, Cliff Ali, Zahid Tindall, Brian J. Goeker, Markus Bristow, James Eisen, Jonathan A. Markowitz, Victor Hugenholtz, Philip Kyrpides, Nikos C. Klenk, Hans-Peter TI Complete genome sequence of Catenulispora acidiphila type strain (ID 139908(T)) SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE acidophilic; free-living; vegetative and aerial mycelia; filamentous actinomycete; non-pathogenic; aerobic; Catenulisporineae ID FAM-NOV; PROPOSAL; ACTINOMYCETE; BACTERIA; SYSTEM; SOIL AB Catenulispora acidiphila Busti et al. 2006 is the type species of the genus Catenulispora, and is of interest because of the rather isolated phylogenetic location it occupies within the scarcely explored suborder Catenulisporineae of the order Actinomycetales. C. acidiphilia is known for its acidophilic, aerobic lifestyle, but can also grow scantly under anaerobic conditions. Under regular conditions, C. acidiphilia grows in long filaments of relatively short aerial hyphae with marked septation. It is a free living, non motile, Gram-positive bacterium isolated from a forest soil sample taken from a wooded area in Gerenzano, Italy. Here we describe the features of this organism, together with the complete genome sequence and annotation. This is the first complete genome sequence of the actinobacterial family Catenulisporaceae, and the 10,467,782 bp long single replicon genome with its 9056 protein-coding and 69 RNA genes is a part of the Genomic Encyclopedia of Bacteria and Archaea project. C1 [Ali, Zahid; Tindall, Brian J.; Goeker, Markus; Klenk, Hans-Peter] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA. [Copeland, Alex; Lapidus, Alla; Del Rio, Tijana Glavina; Nolan, Matt; Lucas, Susan; Chen, Feng; Tice, Hope; Cheng, Jan-Fang; Bruce, David; Goodwin, Lynne; Pitluck, Sam; Mikhailova, Natalia; Pati, Amrita; Ivanova, Natalia; Mavromatis, Konstantinos; Chain, Patrick; Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.; Chertkov, Olga; Brettin, Thomas; Detter, John C.; Han, Cliff; Bristow, James; Eisen, Jonathan A.; Hugenholtz, Philip; Kyrpides, Nikos C.] DOE Joint Genome Inst, Walnut Creek, CA USA. [Bruce, David; Goodwin, Lynne; Chertkov, Olga; Brettin, Thomas; Detter, John C.; Han, Cliff] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA. [Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA. [Chain, Patrick] Lawrence Livermore Natl Lab, Livermore, CA USA. [Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.] Oak Ridge Natl Lab, Oak Ridge, TN USA. RP Klenk, HP (reprint author), DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. RI Hauser, Loren/H-3881-2012; Land, Miriam/A-6200-2011; chain, patrick/B-9777-2013; Kyrpides, Nikos/A-6305-2014; Lapidus, Alla/I-4348-2013 OI Land, Miriam/0000-0001-7102-0031; Kyrpides, Nikos/0000-0002-6131-0462; Lapidus, Alla/0000-0003-0427-8731 FU US Department of Energy Office of Science, Biological and Environmental Research Program; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; University of California, Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; University of California, Los Alamos National Laboratory [DE-AC02-06NA25396]; German Research Foundation (DFG) [INST 599/1-1] FX We gratefully acknowledge the help of Marlen Jando for growing C. acidiphila cultures and Susanne Schneider for DNA extraction and quality analysis (both at the DSMZ). This work was performed under the auspices of the US Department of Energy Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396, as well as German Research Foundation (DFG) INST 599/1-1. NR 20 TC 13 Z9 29 U1 1 U2 10 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 2 BP 119 EP 125 DI 10.4056/sigs.17259 PG 7 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17CY UT WOS:000207916500005 PM 21304647 ER PT J AU Ivanova, N Gronow, S Lapidus, A Copeland, A Del Rio, TG Nolan, M Lucas, S Chen, F Tice, H Cheng, JF Saunders, E Bruce, D Goodwin, L Brettin, T Detter, JC Han, C Pitluck, S Mikhailova, N Pati, A Mavrommatis, K Chen, A Palaniappan, K Land, M Hauser, L Chang, YJ Jeffries, CD Chain, P Rohde, C Goker, M Bristow, J Eisen, JA Markowitz, V Hugenholtz, P Kyrpides, NC Klenk, HP AF Ivanova, Natalia Gronow, Sabine Lapidus, Alla Copeland, Alex Del Rio, Tijana Glavina Nolan, Matt Lucas, Susan Chen, Feng Tice, Hope Cheng, Jan-Fang Saunders, Elizabeth Bruce, David Goodwin, Lynne Brettin, Thomas Detter, John C. Han, Cliff Pitluck, Sam Mikhailova, Natalia Pati, Amrita Mavrommatis, Konstantinos Chen, Amy Palaniappan, Krishna Land, Miriam Hauser, Loren Chang, Yun-Juan Jeffries, Cynthia D. Chain, Patrick Rohde, Christine Goeker, Markus Bristow, Jim Eisen, Jonathan A. Markowitz, Victor Hugenholtz, Philip Kyrpides, Nikos C. Klenk, Hans-Peter TI Complete genome sequence of Leptotrichia buccalis type strain (C-1013-b(T)) SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE Fusobacteria; 'Leptotrichiaceae'; Gram-negative fusiform rods; human oral microflora; dental plaque; non-motile; non-sporulating; anaerobic AB Leptotrichia buccalis (Robin 1853) Trevisan 1879 is the type species of the genus, and is of phylogenetic interest because of its isolated location in the sparsely populated and neither taxonomically nor genomically adequately accessed family 'Leptotrichiaceae' within the phylum 'Fusobacteria'. Species of Leptotrichia are large, fusiform, non-motile, non-sporulating rods, which often populate the human oral flora. L. buccalis is anaerobic to aerotolerant, and saccharolytic. Here we describe the features of this organism, together with the complete genome sequence and annotation. This is the first complete genome sequence of the order 'Fusobacteriales' and no more than the second sequence from the phylum 'Fusobacteria'. The 2,465,610 bp long single replicon genome with its 2306 protein-coding and 61 RNA genes is a part of the Genomic Encyclopedia of Bacteria and Archaea project. C1 [Gronow, Sabine; Rohde, Christine; Goeker, Markus; Klenk, Hans-Peter] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Ivanova, Natalia; Copeland, Alex; Del Rio, Tijana Glavina; Nolan, Matt; Lucas, Susan; Chen, Feng; Tice, Hope; Cheng, Jan-Fang; Saunders, Elizabeth; Bruce, David; Goodwin, Lynne; Brettin, Thomas; Detter, John C.; Han, Cliff; Pitluck, Sam; Mikhailova, Natalia; Pati, Amrita; Mavrommatis, Konstantinos; Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.; Chain, Patrick; Bristow, Jim; Eisen, Jonathan A.; Hugenholtz, Philip; Kyrpides, Nikos C.] DOE Joint Genome Inst, Walnut Creek, CA USA. [Saunders, Elizabeth; Bruce, David; Goodwin, Lynne; Brettin, Thomas; Detter, John C.; Han, Cliff] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA. [Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA. [Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Chain, Patrick] Lawrence Livermore Natl Lab, Livermore, CA USA. [Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA. RP Klenk, HP (reprint author), DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. RI Hauser, Loren/H-3881-2012; Land, Miriam/A-6200-2011; chain, patrick/B-9777-2013; Lapidus, Alla/I-4348-2013; Kyrpides, Nikos/A-6305-2014 OI Land, Miriam/0000-0001-7102-0031; Lapidus, Alla/0000-0003-0427-8731; Kyrpides, Nikos/0000-0002-6131-0462 FU US Department of Energy Office of Science, Biological and Environmental Research Program; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; University of California, Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; University of California, Los Alamos National Laboratory [DE-AC02-06NA25396]; German Research Foundation (DFG) [INST 599/1-1] FX We would like to gratefully acknowledge the help of Sabine Welnitz for growing L. buccalis cultures and Susanne Schneider for DNA extraction and quality analysis (both at DSMZ). This work was performed under the auspices of the US Department of Energy Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396, as well as German Research Foundation (DFG) INST 599/1-1 NR 23 TC 10 Z9 16 U1 1 U2 4 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 2 BP 126 EP 132 DI 10.4056/sigs.1854 PG 7 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17CY UT WOS:000207916500006 PM 21304648 ER PT J AU Lang, E Lapidus, A Chertkov, O Brettin, T Detter, JC Han, C Copeland, A Del Rio, TG Nolan, M Chen, F Lucas, S Tice, H Cheng, JF Land, M Hauser, L Chang, YJ Jeffries, CD Kopitz, M Bruce, D Goodwin, L Pitluck, S Ovchinnikova, G Pati, A Ivanova, N Mavrommatis, K Chen, A Palaniappan, K Chain, P Bristow, J Eisen, JA Markowitz, V Hugenholtz, P Goker, M Rohde, M Kyrpides, NC Klenk, HP AF Lang, Elke Lapidus, Alla Chertkov, Olga Brettin, Thomas Detter, John C. Han, Cliff Copeland, Alex Del Rio, Tijana Glavina Nolan, Matt Chen, Feng Lucas, Susan Tice, Hope Cheng, Jan-Fang Land, Miriam Hauser, Loren Chang, Yun-Juan Jeffries, Cynthia D. Kopitz, Marcus Bruce, David Goodwin, Lynne Pitluck, Sam Ovchinnikova, Galina Pati, Amrita Ivanova, Natalia Mavrommatis, Konstantinos Chen, Amy Palaniappan, Krishna Chain, Patrick Bristow, Jim Eisen, Jonathan A. Markowitz, Victor Hugenholtz, Philip Goeker, Markus Rohde, Manfred Kyrpides, Nikos C. Klenk, Hans-Peter TI Complete genome sequence of Dyadobacter fermentans type strain (NS114(T)) SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE mesophile; free-living; non-pathogenic; aerobic; chains of rods; Cytophagaceae AB Dyadobacter fermentans (Chelius and Triplett, 2000) is the type species of the genus Dyadobacter. It is of phylogenetic interest because of its location in the Cytophagaceae, a very diverse family within the order 'Sphingobacteriales'. D. fermentans has a mainly respiratory metabolism, stains Gram-negative, is non-motile and oxidase and catalase positive. It is characterized by the production of cell filaments in aging cultures, a flexirubin-like pigment and its ability to ferment glucose, which is almost unique in the aerobically living members of this taxonomically difficult family. Here we describe the features of this organism, together with the complete genome sequence, and its annotation. This is the first complete genome sequence of the sphingobacterial genus Dyadobacter, and this 6,967,790 bp long single replicon genome with its 5804 protein-coding and 50 RNA genes is part of the Genomic Encyclopedia of Bacteria and Archaea project. C1 [Lang, Elke; Kopitz, Marcus; Goeker, Markus; Klenk, Hans-Peter] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Lapidus, Alla; Chertkov, Olga; Brettin, Thomas; Detter, John C.; Han, Cliff; Copeland, Alex; Del Rio, Tijana Glavina; Nolan, Matt; Chen, Feng; Lucas, Susan; Tice, Hope; Cheng, Jan-Fang; Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.; Bruce, David; Goodwin, Lynne; Pitluck, Sam; Ovchinnikova, Galina; Pati, Amrita; Ivanova, Natalia; Mavrommatis, Konstantinos; Chain, Patrick; Bristow, Jim; Eisen, Jonathan A.; Hugenholtz, Philip; Kyrpides, Nikos C.] DOE Joint Genome Inst, Walnut Creek, CA USA. [Chertkov, Olga; Brettin, Thomas; Detter, John C.; Han, Cliff; Bruce, David; Goodwin, Lynne] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA. [Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA. [Chain, Patrick] Lawrence Livermore Natl Lab, Livermore, CA USA. [Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA. [Rohde, Manfred] HZI Helmholtz Ctr Infect Res, Braunschweig, Germany. RP Klenk, HP (reprint author), DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. RI Hauser, Loren/H-3881-2012; Land, Miriam/A-6200-2011; chain, patrick/B-9777-2013; Kyrpides, Nikos/A-6305-2014; Lapidus, Alla/I-4348-2013 OI Land, Miriam/0000-0001-7102-0031; Kyrpides, Nikos/0000-0002-6131-0462; Lapidus, Alla/0000-0003-0427-8731 FU US Department of Energy Office of Science, Biological and Environmental Research Program; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; University of California, Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; University of California, Los Alamos National Laboratory [DE-AC02-06NA25396]; German Research Foundation (DFG) [INST 599/1-1] FX We would like to gratefully acknowledge the help of Susanne Schneider (DSMZ) for DNA extraction and quality analysis. This work was performed under the auspices of the US Department of Energy Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396, as well as German Research Foundation (DFG) INST 599/1-1. NR 26 TC 14 Z9 15 U1 2 U2 14 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 2 BP 133 EP 140 DI 10.4056/sigs.19262 PG 8 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17CY UT WOS:000207916500007 PM 21304649 ER PT J AU Pati, A Sikorski, J Nolan, M Lapidus, A Copeland, A Del Rio, TG Lucas, S Chen, F Tice, H Pitluck, S Cheng, JF Chertkov, O Brettin, T Han, C Detter, JC Kuske, C Bruce, D Goodwin, L Chain, P D'haeseleer, P Chen, A Palaniappan, K Ivanova, N Mavromatis, K Mikhailova, N Rohde, M Tindall, BJ Goker, M Bristow, J Eisen, JA Markowitz, V Hugenholtz, P Kyrpides, NC Klenk, HP AF Pati, Amrita Sikorski, Johannes Nolan, Matt Lapidus, Alla Copeland, Alex Del Rio, Tijana Glavina Lucas, Susan Chen, Feng Tice, Hope Pitluck, Sam Cheng, Jan-Fang Chertkov, Olga Brettin, Thomas Han, Cliff Detter, John C. Kuske, Cheryl Bruce, David Goodwin, Lynne Chain, Patrick D'haeseleer, Patrik Chen, Amy Palaniappan, Krishna Ivanova, Natalia Mavromatis, Konstantinos Mikhailova, Natalia Rohde, Manfred Tindall, Brian J. Goeker, Markus Bristow, Jim Eisen, Jonathan A. Markowitz, Victor Hugenholtz, Philip Kyrpides, Nikos C. Klenk, Hans-Peter TI Complete genome sequence of Saccharomonospora viridis type strain (P101(T)) SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE thermophile; hot compost; Gram-negative actinomycete; farmer's lung disease; bagassosis; humidifier fever; pentachlorophenol metabolism; Pseudonocardiaceae ID PATHWAY/GENOME DATABASES; BIOCYC COLLECTION; MICROBIAL GENOMES; RNA GENES; SYSTEM; ANNOTATION; PROPOSAL; GENUS; TOOL; NOV AB Saccharomonospora viridis (Schuurmans et al. 1956) Nonomurea and Ohara 1971 is the type species of the genus Saccharomonospora which belongs to the family Pseudonocardiaceae. S. viridis is of interest because it is a Gram-negative organism classified among the usually Gram-positive actinomycetes. Members of the species are frequently found in hot compost and hay, and its spores can cause farmer's lung disease, bagassosis, and humidifier fever. Strains of the species S. viridis have been found to metabolize the xenobiotic pentachlorophenol (PCP). The strain described in this study has been isolated from peat-bog in Ireland. Here we describe the features of this organism, together with the complete genome sequence, and annotation. This is the first complete genome sequence of the family Pseudonocardiaceae, and the 4,308,349 bp long single replicon genome with its 3906 protein-coding and 64 RNA genes is part of the Genomic Encyclopedia of Bacteria and Archaea project. C1 [Sikorski, Johannes; Tindall, Brian J.; Goeker, Markus; Klenk, Hans-Peter] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Pati, Amrita; Nolan, Matt; Lapidus, Alla; Copeland, Alex; Del Rio, Tijana Glavina; Lucas, Susan; Chen, Feng; Tice, Hope; Pitluck, Sam; Cheng, Jan-Fang; Chertkov, Olga; Brettin, Thomas; Han, Cliff; Detter, John C.; Kuske, Cheryl; Bruce, David; Goodwin, Lynne; Chain, Patrick; D'haeseleer, Patrik; Ivanova, Natalia; Mavromatis, Konstantinos; Mikhailova, Natalia; Bristow, Jim; Eisen, Jonathan A.; Hugenholtz, Philip; Kyrpides, Nikos C.] DOE Joint Genome Inst, Walnut Creek, CA USA. [Chertkov, Olga; Brettin, Thomas; Han, Cliff; Detter, John C.; Kuske, Cheryl; Bruce, David; Goodwin, Lynne] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA. [Chain, Patrick; D'haeseleer, Patrik; Markowitz, Victor] Lawrence Livermore Natl Lab, Livermore, CA USA. [Chen, Amy; Palaniappan, Krishna] Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA. [Rohde, Manfred] HZI Helmholtz Ctr Infect Res, Braunschweig, Germany. [Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA. RP Klenk, HP (reprint author), DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. RI chain, patrick/B-9777-2013; Kyrpides, Nikos/A-6305-2014; Lapidus, Alla/I-4348-2013; OI Kyrpides, Nikos/0000-0002-6131-0462; Lapidus, Alla/0000-0003-0427-8731; D'haeseleer, Patrik/0000-0003-0007-8150 FU US Department of Energy Office of Science, Biological and Environmental Research Program; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; University of California, Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; University of California, Los Alamos National Laboratory [DE-AC02-06NA25396]; German Research Foundation (DFG) [INST 599/1-1, SI 1352/1-1] FX We would like to gratefully acknowledge the help of Marlen Jando for growing S. viridis cultures and Susanne Schneider for DNA extraction and quality analysis (both at DSMZ). This work was performed under the auspices of the US Department of Energy Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396, as well as German Research Foundation (DFG) INST 599/1-1 and SI 1352/1-1. NR 34 TC 10 Z9 18 U1 1 U2 8 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 2 BP 141 EP 149 DI 10.4056/sigs.20263 PG 9 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17CY UT WOS:000207916500008 PM 21304650 ER PT J AU Malfatti, S Tindall, BJ Schneider, S Fahnrich, R Lapidus, A LaButtii, K Copeland, A Del Rio, TG Nolan, M Chen, F Lucas, S Tice, H Cheng, JF Bruce, D Goodwin, L Pitluck, S Anderson, I Pati, A Ivanova, N Mavromatis, K Chen, A Palaniappan, K D'haeseleer, P Goker, M Bristow, J Eisen, JA Markowitz, V Hugenholtz, P Kyrpides, NC Klenk, HP Chain, P AF Malfatti, Stephanie Tindall, Brian J. Schneider, Susanne Faehnrich, Regine Lapidus, Alla LaButtii, Kurt Copeland, Alex Del Rio, Tijana Glavina Nolan, Matt Chen, Feng Lucas, Susan Tice, Hope Cheng, Jan-Fang Bruce, David Goodwin, Lynne Pitluck, Sam Anderson, Iain Pati, Amrita Ivanova, Natalia Mavromatis, Konstantinos Chen, Amy Palaniappan, Krishna D'haeseleer, Patrik Goeker, Markus Bristow, Jim Eisen, Jonathan A. Markowitz, Victor Hugenholtz, Philip Kyrpides, Nikos C. Klenk, Hans-Peter Chain, Patrick TI Complete genome sequence of Halogeometricum borinquense type strain (PR3(T)) SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE halophile; free-living; non-pathogenic; aerobic; pleomorphic cells; euryarchaeon AB Halogeometricum borinquense Montalvo-Rodriguez et al. 1998 is the type species of the genus, and is of phylogenetic interest because of its distinct location between the halobacterial genera Haloquadratum and Halosarcina. H. borinquense requires extremely high salt (NaCl) concentrations for growth. It can not only grow aerobically but also anaerobically using nitrate as electron acceptor. The strain described in this report is a free-living, motile, pleomorphic, euryarchaeon, which was originally isolated from the solar salterns of Cabo Rojo, Puerto Rico. Here we describe the features of this organism, together with the complete genome sequence, and annotation. This is the first complete genome sequence of the halobacterial genus Halogeometricum, and this 3,944,467 bp long six replicon genome with its 3937 protein-coding and 57 RNA genes is part of the Genomic Encyclopedia of Bacteria and Archaea project. C1 [Malfatti, Stephanie; Lapidus, Alla; LaButtii, Kurt; Copeland, Alex; Del Rio, Tijana Glavina; Nolan, Matt; Chen, Feng; Lucas, Susan; Tice, Hope; Cheng, Jan-Fang; Bruce, David; Goodwin, Lynne; Pitluck, Sam; Anderson, Iain; Pati, Amrita; Ivanova, Natalia; Mavromatis, Konstantinos; D'haeseleer, Patrik; Bristow, Jim; Eisen, Jonathan A.; Hugenholtz, Philip; Kyrpides, Nikos C.; Chain, Patrick] DOE Joint Genome Inst, Walnut Creek, CA 94598 USA. [Malfatti, Stephanie; D'haeseleer, Patrik; Chain, Patrick] Lawrence Livermore Natl Lab, Livermore, CA USA. [Tindall, Brian J.; Schneider, Susanne; Faehnrich, Regine; Goeker, Markus; Klenk, Hans-Peter] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Bruce, David; Goodwin, Lynne] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA. [Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA. [Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA. RP Chain, P (reprint author), DOE Joint Genome Inst, Walnut Creek, CA 94598 USA. RI chain, patrick/B-9777-2013; Kyrpides, Nikos/A-6305-2014; Lapidus, Alla/I-4348-2013 OI Kyrpides, Nikos/0000-0002-6131-0462; Lapidus, Alla/0000-0003-0427-8731 FU US Department of Energy Office of Science, Biological and Environmental Research Program; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; University of California, Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; University of California, Los Alamos National Laboratory [DE-AC02-06NA25396]; German Research Foundation (DFG) [INST 599/1-1] FX This work was performed under the auspices of the US Department of Energy Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396, as well as German Research Foundation (DFG) INST 599/1-1. NR 28 TC 10 Z9 11 U1 1 U2 5 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 2 BP 150 EP 158 DI 10.4056/23264 PG 9 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17CY UT WOS:000207916500009 PM 21304651 ER PT J AU LaButti, K Pukall, R Steenblock, K Del Rio, TG Tice, H Copeland, A Cheng, JF Lucas, S Chen, F Nolan, M Bruce, D Goodwin, L Pitluck, S Ivanova, N Mavromatis, K Ovchinnikova, G Pati, A Chen, A Palaniappan, K Land, M Hauser, L Chang, YJ Jeffries, CD Chain, P Saunders, E Brettin, T Detter, JC Han, C Goker, M Bristow, J Eisen, JA Markowitz, V Hugenholtz, P Kyrpides, NC Klenk, HP Lapidus, A AF LaButti, Kurt Pukall, Ruediger Steenblock, Katja Del Rio, Tijana Glavina Tice, Hope Copeland, Alex Cheng, Jan-Fang Lucas, Susan Chen, Feng Nolan, Matt Bruce, David Goodwin, Lynne Pitluck, Sam Ivanova, Natalia Mavromatis, Konstantinos Ovchinnikova, Galina Pati, Amrita Chen, Amy Palaniappan, Krishna Land, Miriam Hauser, Loren Chang, Yun-Juan Jeffries, Cynthia D. Chain, Patrick Saunders, Elizabeth Brettin, Thomas Detter, John C. Han, Cliff Goeker, Markus Bristow, Jim Eisen, Jonathan A. Markowitz, Victor Hugenholtz, Philip Kyrpides, Nikos C. Klenk, Hans-Peter Lapidus, Alla TI Complete genome sequence of Anaerococcus prevotii type strain (PC1(T)) SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE Firmicutes; Clostridiales; 'Peptostreptococcaceae'; Gram-positive; coccoid; human oral microflora; skin; non-motile; non-sporulating; anaerobic AB Anaerococcus prevotii (Foubert and Douglas 1948) Ezaki et al. 2001 is the type species of the genus, and is of phylogenetic interest because of its arguable assignment to the provisionally arranged family 'Peptostreptococcaceae'. A. prevotii is an obligate anaerobic coccus, usually arranged in clumps or tetrads. The strain, whose genome is described here, was originally isolated from human plasma; other strains of the species were also isolated from clinical specimen. Here we describe the features of this organism, together with the complete genome sequence and annotation. This is the first completed genome sequence of a member of the genus. Next to Finegoldia magna, A. prevotii is only the second species from the family 'Peptostreptococcaceae' for which a complete genome sequence is described. The 1,998,633 bp long genome (chromosome and one plasmid) with its 1852 protein-coding and 61 RNA genes is a part of the Genomic Encyclopedia of Bacteria and Archaea project. C1 [LaButti, Kurt; Del Rio, Tijana Glavina; Tice, Hope; Copeland, Alex; Cheng, Jan-Fang; Lucas, Susan; Chen, Feng; Nolan, Matt; Bruce, David; Goodwin, Lynne; Pitluck, Sam; Ivanova, Natalia; Mavromatis, Konstantinos; Ovchinnikova, Galina; Pati, Amrita; Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.; Chain, Patrick; Saunders, Elizabeth; Brettin, Thomas; Detter, John C.; Han, Cliff; Bristow, Jim; Eisen, Jonathan A.; Hugenholtz, Philip; Kyrpides, Nikos C.; Lapidus, Alla] DOE Joint Genome Inst, Walnut Creek, CA 94598 USA. [Pukall, Ruediger; Steenblock, Katja; Goeker, Markus; Klenk, Hans-Peter] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Bruce, David; Goodwin, Lynne; Saunders, Elizabeth; Brettin, Thomas; Detter, John C.; Han, Cliff] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA. [Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA. [Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Chain, Patrick] Lawrence Livermore Natl Lab, Livermore, CA USA. [Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA. RP Lapidus, A (reprint author), DOE Joint Genome Inst, Walnut Creek, CA 94598 USA. RI Hauser, Loren/H-3881-2012; Land, Miriam/A-6200-2011; chain, patrick/B-9777-2013; Kyrpides, Nikos/A-6305-2014; Lapidus, Alla/I-4348-2013 OI Land, Miriam/0000-0001-7102-0031; Kyrpides, Nikos/0000-0002-6131-0462; Lapidus, Alla/0000-0003-0427-8731 FU US Department of Energy Office of Science, Biological and Environmental Research Program; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; University of California, Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; University of California, Los Alamos National Laboratory [DE-AC02-06NA25396]; German Research Foundation (DFG) [INST 599/1-1] FX We would like to gratefully acknowledge the help of Susanne Schneider (DSMZ) for DNA extraction and quality analysis. This work was performed under the auspices of the US Department of Energy Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396, as well as German Research Foundation (DFG) INST 599/1-1. NR 25 TC 9 Z9 10 U1 1 U2 4 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 2 BP 159 EP 165 DI 10.4056/sigs.2494 PG 7 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17CY UT WOS:000207916500010 PM 21304652 ER PT J AU Saunders, E Pukall, R Abt, B Lapidus, A Del Rio, TG Copeland, A Tice, H Cheng, JF Lucas, S Chen, F Nolan, M Bruce, D Goodwin, L Pitluck, S Ivanova, N Mavromatis, K Ovchinnikova, G Pati, A Chen, A Palaniappan, K Land, M Hauser, L Chang, YJ Jeffries, CD Chain, P Meincke, L Sims, D Brettin, T Detter, JC Goker, M Bristow, J Eisen, JA Markowitz, V Hugenholtz, P Kyrpides, NC Klenk, HP Han, C AF Saunders, Elizabeth Pukall, Ruediger Abt, Birte Lapidus, Alla Del Rio, Tijana Glavina Copeland, Alex Tice, Hope Cheng, Jan-Fang Lucas, Susan Chen, Feng Nolan, Matt Bruce, David Goodwin, Lynne Pitluck, Sam Ivanova, Natalia Mavromatis, Konstantinos Ovchinnikova, Galina Pati, Amrita Chen, Amy Palaniappan, Krishna Land, Miriam Hauser, Loren Chang, Yun-Juan Jeffries, Cynthia D. Chain, Patrick Meincke, Linda Sims, David Brettin, Thomas Detter, John C. Goeker, Markus Bristow, Jim Eisen, Jonathan A. Markowitz, Victor Hugenholtz, Philip Kyrpides, Nikos C. Klenk, Hans-Peter Han, Cliff TI Complete genome sequence of Eggerthella lenta type strain (VPI 0255(T)) SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE mesophile; anaerobic; human intestinal microflora; pathogenic; bacteremia; Gram-positive; Coriobacteriaceae AB Eggerthella lenta (Eggerth 1935) Wade et al. 1999, emended Wurdemann et al. 2009 is the type species of the genus Eggerthella, which belongs to the actinobacterial family Coriobacteriaceae. E. lenta is a Gram-positive, non-motile, non-sporulating pathogenic bacterium that can cause severe bacteremia. The strain described in this study has been isolated from a rectal tumor in 1935. Here we describe the features of this organism, together with the complete genome sequence, and annotation. This is the first complete genome sequence of the genus Eggerthella, and the 3,632,260 bp long single replicon genome with its 3123 protein-coding and 58 RNA genes is part of the Genomic Encyclopedia of Bacteria and Archaea project. C1 [Saunders, Elizabeth; Lapidus, Alla; Del Rio, Tijana Glavina; Copeland, Alex; Tice, Hope; Cheng, Jan-Fang; Lucas, Susan; Chen, Feng; Nolan, Matt; Bruce, David; Goodwin, Lynne; Pitluck, Sam; Ivanova, Natalia; Mavromatis, Konstantinos; Ovchinnikova, Galina; Pati, Amrita; Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.; Chain, Patrick; Meincke, Linda; Sims, David; Brettin, Thomas; Detter, John C.; Bristow, Jim; Eisen, Jonathan A.; Hugenholtz, Philip; Kyrpides, Nikos C.; Han, Cliff] DOE Joint Genome Inst, Walnut Creek, CA 94598 USA. [Pukall, Ruediger; Abt, Birte; Goeker, Markus; Klenk, Hans-Peter] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Bruce, David; Goodwin, Lynne; Meincke, Linda; Sims, David; Brettin, Thomas; Detter, John C.; Han, Cliff] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA. [Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA. [Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Chain, Patrick] Lawrence Livermore Natl Lab, Livermore, CA USA. [Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA. RP Han, C (reprint author), DOE Joint Genome Inst, Walnut Creek, CA 94598 USA. RI Hauser, Loren/H-3881-2012; Land, Miriam/A-6200-2011; chain, patrick/B-9777-2013; Kyrpides, Nikos/A-6305-2014; Lapidus, Alla/I-4348-2013 OI Land, Miriam/0000-0001-7102-0031; Kyrpides, Nikos/0000-0002-6131-0462; Lapidus, Alla/0000-0003-0427-8731 FU US Department of Energy's Office of Science, Biological and Environmental Research Program; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; University of California, Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; University of California, Los Alamos National Laboratory [DE-AC02-06NA25396]; German Research Foundation (DFG) [INST 599/1-1] FX We would like to gratefully acknowledge the help of Gabriele Gehrich-Schroter for growing E. lenta cultures and Susanne Schneider for DNA extraction and quality analysis (both at DSMZ). This work was performed under the auspices of the US Department of Energy's Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396, as well as German Research Foundation (DFG) INST 599/1-1. NR 34 TC 16 Z9 17 U1 1 U2 5 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 2 BP 174 EP 182 DI 10.4056/sigs.33592 PG 9 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17CY UT WOS:000207916500011 PM 21304654 ER PT J AU Anderson, IJ Sun, H Lapidus, A Copeland, A Del Rio, TG Tice, H Dalin, E Lucas, S Barry, K Land, M Richardson, P Huber, H Kyrpides, NC AF Anderson, Iain J. Sun, Hui Lapidus, Alla Copeland, Alex Del Rio, Tijana Glavina Tice, Hope Dalin, Eileen Lucas, Susan Barry, Kerrie Land, Miriam Richardson, Paul Huber, Harald Kyrpides, Nikos C. TI Complete genome sequence of Staphylothermus marinus Stetter and Fiala 1986 type strain F1 SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE Archaea; Desulfurococcales; sulfur-reducing; hyperthermophile AB Staphylothermus marinus Fiala and Stetter 1986 belongs to the order Desulfurococcales within the archaeal phylum Crenarchaeota. S. marinus is a hyperthermophilic, sulfur-dependent, anaerobic heterotroph. Strain F1 was isolated from geothermally heated sediments at Vulcano, Italy, but S. marinus has also been isolated from a hydrothermal vent on the East Pacific Rise. We report the complete genome of S. marinus strain F1, the type strain of the species. This is the fifth reported complete genome sequence from the order Desulfurococcales. C1 [Anderson, Iain J.; Sun, Hui; Lapidus, Alla; Copeland, Alex; Del Rio, Tijana Glavina; Tice, Hope; Dalin, Eileen; Lucas, Susan; Barry, Kerrie; Land, Miriam; Richardson, Paul; Kyrpides, Nikos C.] Joint Genome Inst, Walnut Creek, CA 94598 USA. [Land, Miriam] Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN USA. [Huber, Harald] Univ Regensburg, Lehrstuhl Mikrobiol, D-8400 Regensburg, Germany. [Huber, Harald] Univ Regensburg, Archaeenzentrum, Regensburg, Germany. RP Anderson, IJ (reprint author), Joint Genome Inst, 2800 Mitchell Dr, Walnut Creek, CA 94598 USA. RI Land, Miriam/A-6200-2011; Kyrpides, Nikos/A-6305-2014; Lapidus, Alla/I-4348-2013 OI Land, Miriam/0000-0001-7102-0031; Kyrpides, Nikos/0000-0002-6131-0462; Lapidus, Alla/0000-0003-0427-8731 FU US Department of Energy's Office of Science, Biological and Environmental Research Program; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; University of California, Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; University of California, Los Alamos National Laboratory [DE-AC02-06NA25396]; Department of Energy [DE-AC05-000R22725] FX This work was performed under the auspices of the US Department of Energy's Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396. M. L. was supported by the Department of Energy under contract DE-AC05-000R22725. NR 25 TC 4 Z9 121 U1 1 U2 3 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 2 BP 183 EP 188 DI 10.4056/sigs.30527 PG 6 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17CY UT WOS:000207916500012 PM 21304655 ER PT J AU Anderson, IJ Sieprawska-Lupa, M Lapidus, A Nolan, M Copeland, A Del Rio, TG Tice, H Dalin, E Barry, K Saunders, E Han, C Brettin, T Detter, JC Bruce, D Mikhailova, N Pitluck, S Hauser, L Land, M Lucas, S Richardson, P Whitman, WB Kyrpides, NC AF Anderson, Iain J. Sieprawska-Lupa, Magdalena Lapidus, Alla Nolan, Matt Copeland, Alex Del Rio, Tijana Glavina Tice, Hope Dalin, Eileen Barry, Kerrie Saunders, Elizabeth Han, Cliff Brettin, Thomas Detter, John C. Bruce, David Mikhailova, Natalia Pitluck, Sam Hauser, Loren Land, Miriam Lucas, Susan Richardson, Paul Whitman, William B. Kyrpides, Nikos C. TI Complete genome sequence of Methanoculleus marisnigri Romesser et al. 1981 type strain JR1 SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE Archaea; methanogen; Methanomicrobiales AB Methanoculleus marisnigri Romesser et al. 1981 is a methanogen belonging to the order Methanomicrobiales within the archaeal phylum Euryarchaeota. The type strain, JR1, was isolated from anoxic sediments of the Black Sea. M. marisnigri is of phylogenetic interest because at the time the sequencing project began only one genome had previously been sequenced from the order Methanomicrobiales. We report here the complete genome sequence of M. marisnigri type strain JR1 and its annotation. This is part of a Joint Genome Institute 2006 Community Sequencing Program to sequence genomes of diverse Archaea. C1 [Anderson, Iain J.; Lapidus, Alla; Nolan, Matt; Copeland, Alex; Del Rio, Tijana Glavina; Tice, Hope; Dalin, Eileen; Barry, Kerrie; Saunders, Elizabeth; Han, Cliff; Brettin, Thomas; Detter, John C.; Bruce, David; Mikhailova, Natalia; Pitluck, Sam; Hauser, Loren; Land, Miriam; Lucas, Susan; Richardson, Paul; Kyrpides, Nikos C.] Joint Genome Inst, Walnut Creek, CA 94598 USA. [Sieprawska-Lupa, Magdalena; Whitman, William B.] Univ Georgia, Dept Microbiol, Athens, GA 30602 USA. [Saunders, Elizabeth; Han, Cliff; Brettin, Thomas; Detter, John C.; Bruce, David] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA. [Hauser, Loren; Land, Miriam] Oak Ridge Natl Lab, Oak Ridge, TN USA. RP Anderson, IJ (reprint author), Joint Genome Inst, 2800 Mitchell Dr, Walnut Creek, CA 94598 USA. RI Hauser, Loren/H-3881-2012; Land, Miriam/A-6200-2011; Kyrpides, Nikos/A-6305-2014; Lapidus, Alla/I-4348-2013 OI Land, Miriam/0000-0001-7102-0031; Kyrpides, Nikos/0000-0002-6131-0462; Lapidus, Alla/0000-0003-0427-8731 FU US Department of Energy's Office of Science, Biological and Environmental Research Program; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; University of California, Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; University of California, Los Alamos National Laboratory [DE-AC02-06NA25396]; Department of Energy [DE-AC05-000R22725, DE-FG02-97ER20269] FX This work was performed under the auspices of the US Department of Energy's Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under Contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under Contract No. DE-AC02-06NA25396. M. L. was supported by the Department of Energy under contract DE-AC05-000R22725. M. S.-L., and W. B. W. were supported by DOE contract number DE-FG02-97ER20269. NR 34 TC 14 Z9 199 U1 5 U2 14 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 2 BP 189 EP 196 DI 10.4056/sigs.32535 PG 8 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17CY UT WOS:000207916500013 PM 21304656 ER PT J AU Anderson, IJ Sieprawska-Lupa, M Goltsman, E Lapidus, A Copeland, A Del Rio, TG Tice, H Dalin, E Barry, K Pitluck, S Hauser, L Land, M Lucas, S Richardson, P Whitman, WB Kyrpides, NC AF Anderson, Iain J. Sieprawska-Lupa, Magdalena Goltsman, Eugene Lapidus, Alla Copeland, Alex Del Rio, Tijana Glavina Tice, Hope Dalin, Eileen Barry, Kerrie Pitluck, Sam Hauser, Loren Land, Miriam Lucas, Susan Richardson, Paul Whitman, William B. Kyrpides, Nikos C. TI Complete genome sequence of Methanocorpusculum labreanum type strain Z SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE archaea; methanogen; Methanomicrobiales AB Methanocorpusculum labreanum is a methanogen belonging to the order Methanomicrobiales within the archaeal phylum Euryarchaeota. The type strain Z was isolated from surface sediments of Tar Pit Lake in the La Brea Tar Pits in Los Angeles, California. M. labreanum is of phylogenetic interest because at the time the sequencing project began only one genome had previously been sequenced from the order Methanomicrobiales. We report here the complete genome sequence of M. labreanum type strain Z and its annotation. This is part of a 2006 Joint Genome Institute Community Sequencing Program project to sequence genomes of diverse Archaea. C1 [Anderson, Iain J.; Goltsman, Eugene; Lapidus, Alla; Copeland, Alex; Del Rio, Tijana Glavina; Tice, Hope; Dalin, Eileen; Barry, Kerrie; Pitluck, Sam; Hauser, Loren; Land, Miriam; Lucas, Susan; Richardson, Paul; Kyrpides, Nikos C.] Joint Genome Inst, Walnut Creek, CA 94598 USA. [Sieprawska-Lupa, Magdalena; Whitman, William B.] Univ Georgia, Dept Microbiol, Athens, GA 30602 USA. [Hauser, Loren; Land, Miriam] Oak Ridge Natl Lab, Oak Ridge, TN USA. RP Anderson, IJ (reprint author), Joint Genome Inst, 2800 Mitchell Dr, Walnut Creek, CA 94598 USA. RI Hauser, Loren/H-3881-2012; Land, Miriam/A-6200-2011; Kyrpides, Nikos/A-6305-2014; Lapidus, Alla/I-4348-2013 OI Land, Miriam/0000-0001-7102-0031; Kyrpides, Nikos/0000-0002-6131-0462; Lapidus, Alla/0000-0003-0427-8731 FU US Department of Energy's Office of Science, Biological and Environmental Research Program; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; University of California, Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; University of California, Los Alamos National Laboratory [DE-AC02-06NA25396]; Department of Energy [DE-AC05-000R22725, DE-FG02-97ER20269] FX This work was performed under the auspices of the US Department of Energy's Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under Contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under Contract No. DE-AC02-06NA25396. L. H. and M. L. were supported by the Department of Energy under contract DE-AC05-000R22725. M. S.-L., and W. B. W. were supported by DOE contract number DE-FG02-97ER20269. NR 29 TC 15 Z9 185 U1 1 U2 6 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 2 BP 197 EP 203 PG 7 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17CY UT WOS:000207916500014 PM 21304657 ER PT J AU Anderson, I Tindall, BJ Pomrenke, H Goker, M Lapidus, A Nolan, M Copeland, A Del Rio, TG Chen, F Tice, H Cheng, JF Lucas, S Chertkov, O Bruce, D Brettin, T Detter, JC Han, C Goodwin, L Land, M Hauser, L Chang, YJ Jeffries, CD Pitluck, S Pati, A Mavromatis, K Ivanova, N Ovchinnikova, G Chen, A Palaniappan, K Chain, P Rohde, M Bristow, J Eisen, JA Markowitz, V Hugenholtz, P Kyrpides, NC Klenk, HP AF Anderson, Iain Tindall, Brian J. Pomrenke, Helga Goeker, Markus Lapidus, Alla Nolan, Matt Copeland, Alex Del Rio, Tijana Glavina Chen, Feng Tice, Hope Cheng, Jan-Fang Lucas, Susan Chertkov, Olga Bruce, David Brettin, Thomas Detter, John C. Han, Cliff Goodwin, Lynne Land, Miriam Hauser, Loren Chang, Yun-Juan Jeffries, Cynthia D. Pitluck, Sam Pati, Amrita Mavromatis, Konstantinos Ivanova, Natalia Ovchinnikova, Galina Chen, Amy Palaniappan, Krishna Chain, Patrick Rohde, Manfred Bristow, Jim Eisen, Jonathan A. Markowitz, Victor Hugenholtz, Philip Kyrpides, Nikos C. Klenk, Hans-Peter TI Complete genome sequence of Halorhabdus utahensis type strain (AX-2(T)) SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE halophile; free-living; non-pathogenic; aerobic; euryarchaeon; Halobacteriaceae AB Halorhabdus utahensis Waino et al. 2000 is the type species of the genus, which is of phylogenetic interest because of its location on one of the deepest branches within the very extensive euryarchaeal family Halobacteriaceae. H. utahensis is a free-living, motile, rod shaped to pleomorphic, Gram-negative archaeon, which was originally isolated from a sediment sample collected from the southern arm of Great Salt Lake, Utah, USA. When grown on appropriate media, H. utahensis can form polyhydroxybutyrate (PHB). Here we describe the features of this organism, together with the complete genome sequence, and annotation. This is the first complete genome sequence of the a member of halobacterial genus Halorhabdus, and the 3,116,795 bp long single replicon genome with its 3027 protein-coding and 48 RNA genes is part of the Genomic Encyclopedia of Bacteria and Archaea project. C1 [Tindall, Brian J.; Pomrenke, Helga; Goeker, Markus; Klenk, Hans-Peter] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Anderson, Iain; Lapidus, Alla; Nolan, Matt; Copeland, Alex; Del Rio, Tijana Glavina; Chen, Feng; Tice, Hope; Cheng, Jan-Fang; Lucas, Susan; Chertkov, Olga; Bruce, David; Brettin, Thomas; Detter, John C.; Han, Cliff; Goodwin, Lynne; Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.; Pitluck, Sam; Pati, Amrita; Mavromatis, Konstantinos; Ivanova, Natalia; Ovchinnikova, Galina; Chain, Patrick; Bristow, Jim; Eisen, Jonathan A.; Hugenholtz, Philip; Kyrpides, Nikos C.] US DOE, Joint Genome Inst, Walnut Creek, CA USA. [Chertkov, Olga; Bruce, David; Brettin, Thomas; Detter, John C.; Han, Cliff; Goodwin, Lynne] Los Alamos Natl Lab, Los Alamos, NM USA. [Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA. [Chain, Patrick] Lawrence Livermore Natl Lab, Livermore, CA USA. [Rohde, Manfred] HZI Helmholtz Ctr Infect Res, Braunschweig, Germany. [Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA. RP Klenk, HP (reprint author), DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. RI Hauser, Loren/H-3881-2012; Land, Miriam/A-6200-2011; chain, patrick/B-9777-2013; Kyrpides, Nikos/A-6305-2014; Lapidus, Alla/I-4348-2013 OI Land, Miriam/0000-0001-7102-0031; Kyrpides, Nikos/0000-0002-6131-0462; Lapidus, Alla/0000-0003-0427-8731 FU US Department of Energy's Office of Science, Biological and Environmental Research; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; Los Alamos National Laboratory [DE-AC02-06NA25396]; German Research Foundation (DFG) [INST 599/1-1] FX We gratefully acknowledge the help of Susanne Schneider (DSMZ) for DNA extraction and quality analysis. This work was performed under the auspices of the US Department of Energy's Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396, as well as German Research Foundation (DFG) INST 599/1-1. NR 23 TC 14 Z9 20 U1 1 U2 5 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 3 BP 218 EP 225 DI 10.4056/sigs.31864 PG 8 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17DA UT WOS:000207916700002 PM 21304660 ER PT J AU Han, C Sikorski, J Lapidus, A Nolan, M Del Rio, TG Tice, H Cheng, JF Lucas, S Chen, F Copeland, A Ivanova, N Mavromatis, K Ovchinnikova, G Pati, A Bruce, D Goodwin, L Pitluck, S Chen, A Palaniappan, K Land, M Hauser, L Chang, YJ Jeffries, CD Chain, P Saunders, E Brettin, T Goker, M Tindall, BJ Bristow, J Eisen, JA Markowitz, V Hugenholtz, P Kyrpides, NC Klenk, HP Detter, JC AF Han, Cliff Sikorski, Johannes Lapidus, Alla Nolan, Matt Del Rio, Tijana Glavina Tice, Hope Cheng, Jan-Fang Lucas, Susan Chen, Feng Copeland, Alex Ivanova, Natalia Mavromatis, Konstantinos Ovchinnikova, Galina Pati, Amrita Bruce, David Goodwin, Lynne Pitluck, Sam Chen, Amy Palaniappan, Krishna Land, Miriam Hauser, Loren Chang, Yun-Juan Jeffries, Cynthia D. Chain, Patrick Saunders, Elizabeth Brettin, Thomas Goeker, Markus Tindall, Brian J. Bristow, Jim Eisen, Jonathan A. Markowitz, Victor Hugenholtz, Philip Kyrpides, Nikos C. Klenk, Hans-Peter Detter, John C. TI Complete genome sequence of Kangiella koreensis type strain (SW-125(T)) SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE mesophile; non-pathogenic; aerobic and anaerobic growth; Oceanospirillales AB Kangiella koreensis (Yoon et al. 2004) is the type species of the genus and is of phylogenetic interest because of the very isolated location of the genus Kangiella in the gammaproteobacterial order Oceanospirillales. K. koreensis SW-125(T) is a Gram-negative, non-motile, non-spore-forming bacterium isolated from tidal flat sediments at Daepo Beach, Yellow Sea, Korea. Here we describe the features of this organism, together with the complete genome sequence, and annotation. This is the first completed genome sequence from the genus Kangiella and only the fourth genome from the order Oceanospirillales. This 2,852,073 bp long single replicon genome with its 2647 protein-coding and 48 RNA genes is part of the Genomic Encyclopedia of Bacteria and Archaea project. C1 [Sikorski, Johannes; Goeker, Markus; Tindall, Brian J.; Klenk, Hans-Peter] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Han, Cliff; Lapidus, Alla; Nolan, Matt; Del Rio, Tijana Glavina; Tice, Hope; Cheng, Jan-Fang; Lucas, Susan; Chen, Feng; Copeland, Alex; Ivanova, Natalia; Mavromatis, Konstantinos; Ovchinnikova, Galina; Pati, Amrita; Bruce, David; Goodwin, Lynne; Pitluck, Sam; Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.; Chain, Patrick; Saunders, Elizabeth; Brettin, Thomas; Bristow, Jim; Eisen, Jonathan A.; Hugenholtz, Philip; Kyrpides, Nikos C.; Detter, John C.] US DOE, Joint Genome Inst, Walnut Creek, CA USA. [Han, Cliff; Bruce, David; Goodwin, Lynne; Saunders, Elizabeth; Brettin, Thomas; Detter, John C.] Los Alamos Natl Lab, Los Alamos, NM USA. [Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA. [Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Chain, Patrick] Lawrence Livermore Natl Lab, Livermore, CA USA. [Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA. RP Klenk, HP (reprint author), DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. RI Hauser, Loren/H-3881-2012; Land, Miriam/A-6200-2011; chain, patrick/B-9777-2013; Kyrpides, Nikos/A-6305-2014; Lapidus, Alla/I-4348-2013 OI Land, Miriam/0000-0001-7102-0031; Kyrpides, Nikos/0000-0002-6131-0462; Lapidus, Alla/0000-0003-0427-8731 FU US Department of Energy Office of Science, Biological and Environmental Research; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; Los Alamos National Laboratory [DE-AC02-06NA25396]; German Research Foundation (DFG) [INST 599/1-1] FX We would like to gratefully acknowledge the help of Helga Pomrenke for growing K. koreensis cultures and Susanne Schneider for DNA extraction and quality analysis (both at DSMZ). This work was performed under the auspices of the US Department of Energy Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396, as well as German Research Foundation (DFG) INST 599/1-1. NR 20 TC 7 Z9 11 U1 1 U2 4 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 3 BP 226 EP 233 DI 10.4056/sigs.36635 PG 8 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17DA UT WOS:000207916700003 PM 21304661 ER PT J AU Pukall, R Lapidus, A Nolan, M Copeland, A Del Rio, TG Lucas, S Chen, F Tice, H Cheng, JF Chertkov, O Bruce, D Goodwin, L Kuske, C Brettin, T Detter, JC Han, C Pitluck, S Pati, A Mavrommatis, K Ivanova, N Ovchinnikova, G Chen, A Palaniappan, K Schneider, S Rohde, M Chain, P D'haeseleer, P Goker, M Bristow, J Eisen, JA Markowitz, V Kyrpides, NC Klenk, HP Hugenholtz, P AF Pukall, Ruediger Lapidus, Alla Nolan, Matt Copeland, Alex Del Rio, Tijana Glavina Lucas, Susan Chen, Feng Tice, Hope Cheng, Jan-Fang Chertkov, Olga Bruce, David Goodwin, Lynne Kuske, Cheryl Brettin, Thomas Detter, John C. Han, Cliff Pitluck, Sam Pati, Amrita Mavrommatis, Konstantinos Ivanova, Natalia Ovchinnikova, Galina Chen, Amy Palaniappan, Krishna Schneider, Susanne Rohde, Manfred Chain, Patrick D'haeseleer, Patrik Goeker, Markus Bristow, James Eisen, Jonathan A. Markowitz, Victor Kyrpides, Nikos C. Klenk, Hans-Peter Hugenholtz, Philip TI Complete genome sequence of Slackia heliotrinireducens type strain (RHS 1(T)) SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE Gram-positive coccus; anaerobic; asaccharolytic; pyrrolizidine alkaloids; Coriobacteriaceae ID PEPTOSTREPTOCOCCUS-HELIOTRINREDUCENS; PATHWAY/GENOME DATABASES; BIOCYC COLLECTION; MICROBIAL GENOMES; RNA GENES; SYSTEM; NOV; EUBACTERIUM; ANNOTATION; PROPOSAL AB Slackia heliotrinireducens (Lanigan 1983) Wade et al. 1999 is of phylogenetic interest because of its location in a genomically yet uncharted section of the family Coriobacteriaceae, within the deep branching Actinobacteria. Strain RHS 1(T) was originally isolated from the ruminal flora of a sheep. It is a proteolytic anaerobic coccus, able to reductively cleave pyrrolizidine alkaloids. Here we describe the features of this organism, together with the complete genome sequence, and annotation. This is the first complete genome sequence of the genus Slackia, and the 3,165,038 bp long single replicon genome with its 2798 protein-coding and 60 RNA genes is part of the Genomic Encyclopedia of Bacteria and Archaea project. C1 [Lapidus, Alla; Nolan, Matt; Copeland, Alex; Del Rio, Tijana Glavina; Lucas, Susan; Chen, Feng; Tice, Hope; Cheng, Jan-Fang; Chertkov, Olga; Bruce, David; Goodwin, Lynne; Kuske, Cheryl; Brettin, Thomas; Detter, John C.; Han, Cliff; Pitluck, Sam; Pati, Amrita; Mavrommatis, Konstantinos; Ivanova, Natalia; Ovchinnikova, Galina; Chain, Patrick; D'haeseleer, Patrik; Bristow, James; Eisen, Jonathan A.; Kyrpides, Nikos C.; Hugenholtz, Philip] US DOE, Joint Genome Inst, Walnut Creek, CA USA. [Pukall, Ruediger; Schneider, Susanne; Goeker, Markus; Klenk, Hans-Peter] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Chertkov, Olga; Bruce, David; Goodwin, Lynne; Kuske, Cheryl; Brettin, Thomas; Detter, John C.; Han, Cliff] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA. [Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA. [Rohde, Manfred] HZI Helmholtz Ctr Infect Res, Braunschweig, Germany. [Chain, Patrick; D'haeseleer, Patrik] Lawrence Livermore Natl Lab, Livermore, CA USA. [Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA. RP Hugenholtz, P (reprint author), US DOE, Joint Genome Inst, Walnut Creek, CA USA. RI chain, patrick/B-9777-2013; Kyrpides, Nikos/A-6305-2014; Lapidus, Alla/I-4348-2013 OI Kyrpides, Nikos/0000-0002-6131-0462; Lapidus, Alla/0000-0003-0427-8731 FU US Department of Energy's Office of Science, Biological and Environmental Research; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; Los Alamos National Laboratory [DE-AC02-06NA25396]; German Research Foundation (DFG) [INST 599/1-1] FX We would like to gratefully acknowledge the help of Gabriele Gehrich-Schroter (DSMZ) for growing S. heliotrinireducens cultures. This work was performed under the auspices of the US Department of Energy's Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396, as well as German Research Foundation (DFG) INST 599/1-1. NR 34 TC 12 Z9 13 U1 1 U2 6 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 3 BP 234 EP 241 DI 10.4056/sigs.37633 PG 8 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17DA UT WOS:000207916700004 PM 21304663 ER PT J AU Spring, S Lapidus, A Schroder, M Gleim, D Sims, D Meincke, L Del Rio, TG Tice, H Copeland, A Cheng, JF Lucas, S Chen, F Nolan, M Bruce, D Goodwin, L Pitluck, S Ivanova, N Mavromatis, K Mikhailova, N Pati, A Chen, A Palaniappan, K Land, M Hauser, L Chang, YJ Jeffries, CD Chain, P Saunders, E Brettin, T Detter, JC Goker, M Bristow, J Eisen, JA Markowitz, V Hugenholtz, P Kyrpides, NC Klenk, HP Han, C AF Spring, Stefan Lapidus, Alla Schroeder, Maren Gleim, Dorothea Sims, David Meincke, Linda Del Rio, Tijana Glavina Tice, Hope Copeland, Alex Cheng, Jan-Fang Lucas, Susan Chen, Feng Nolan, Matt Bruce, David Goodwin, Lynne Pitluck, Sam Ivanova, Natalia Mavromatis, Konstantinos Mikhailova, Natalia Pati, Amrita Chen, Amy Palaniappan, Krishna Land, Miriam Hauser, Loren Chang, Yun-Juan Jeffries, Cynthia D. Chain, Patrick Saunders, Elizabeth Brettin, Thomas Detter, John C. Goeker, Markus Bristow, Jim Eisen, Jonathan A. Markowitz, Victor Hugenholtz, Philip Kyrpides, Nikos C. Klenk, Hans-Peter Han, Cliff TI Complete genome sequence of Desulfotomaculum acetoxidans type strain (5575(T)) SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE sulfate-reducer; hydrogen sulfide; piggery waste; mesophile; motile; sporulating; obligate anaerobic; Peptococcaceae; Clostridiales; Firmicutes AB Desulfotomaculum acetoxidans Widdel and Pfennig 1977 was one of the first sulfate-reducing bacteria known to grow with acetate as sole energy and carbon source. It is able to oxidize substrates completely to carbon dioxide with sulfate as the electron acceptor, which is reduced to hydrogen sulfide. All available data about this species are based on strain 5575(T), isolated from piggery waste in Germany. Here we describe the features of this organism, together with the complete genome sequence and annotation. This is the first completed genome sequence of a Desulfotomaculum species with validly published name. The 4,545,624 bp long single replicon genome with its 4370 protein-coding and 100 RNA genes is a part of the Genomic Encyclopedia of Bacteria and Archaea project. C1 [Spring, Stefan; Schroeder, Maren; Gleim, Dorothea; Goeker, Markus; Klenk, Hans-Peter] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Lapidus, Alla; Del Rio, Tijana Glavina; Tice, Hope; Copeland, Alex; Cheng, Jan-Fang; Lucas, Susan; Chen, Feng; Nolan, Matt; Bruce, David; Goodwin, Lynne; Pitluck, Sam; Ivanova, Natalia; Mavromatis, Konstantinos; Mikhailova, Natalia; Pati, Amrita; Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.; Chain, Patrick; Saunders, Elizabeth; Brettin, Thomas; Detter, John C.; Bristow, Jim; Eisen, Jonathan A.; Hugenholtz, Philip; Kyrpides, Nikos C.; Han, Cliff] US DOE, Joint Genome Inst, Walnut Creek, CA USA. [Sims, David; Meincke, Linda; Bruce, David; Goodwin, Lynne; Saunders, Elizabeth; Brettin, Thomas; Detter, John C.; Han, Cliff] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA. [Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA. [Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Chain, Patrick] Lawrence Livermore Natl Lab, Livermore, CA USA. [Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA. RP Klenk, HP (reprint author), DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. RI Lapidus, Alla/I-4348-2013; Hauser, Loren/H-3881-2012; Land, Miriam/A-6200-2011; chain, patrick/B-9777-2013; Kyrpides, Nikos/A-6305-2014; Spring, Stefan/N-6933-2013 OI Lapidus, Alla/0000-0003-0427-8731; Land, Miriam/0000-0001-7102-0031; Kyrpides, Nikos/0000-0002-6131-0462; Spring, Stefan/0000-0001-6247-0938 FU US Department of Energy's Office of Science, Biological and Environmental Research; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; Los Alamos National Laboratory; German Research Foundation (DFG) [INST 599/1-1] FX We would like to gratefully acknowledge the help of Susanne Schneider (DSMZ) for DNA extraction and quality analysis. This work was performed under the auspices of the US Department of Energy's Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract. German Research Foundation (DFG) supported DSMZ under INST 599/1-1. NR 41 TC 22 Z9 22 U1 1 U2 8 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 3 BP 242 EP 252 DI 10.4056/sigs.39508 PG 11 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17DA UT WOS:000207916700005 PM 21304664 ER PT J AU Chovatia, M Sikorski, J Schroder, M Lapidus, A Nolan, M Tice, H Del Rio, TG Copeland, A Cheng, JF Lucas, S Chen, F Bruce, D Goodwin, L Pitluck, S Ivanova, N Mavromatis, K Ovchinnikova, G Pati, A Chen, A Palaniappan, K Land, M Hauser, L Chang, YJ Jeffries, CD Chain, P Saunders, E Detter, JC Brettin, T Rohde, M Goker, M Spring, S Bristow, J Markowitz, V Hugenholtz, P Kyrpides, NC Klenk, HP Eisen, JA AF Chovatia, Mansi Sikorski, Johannes Schroeder, Maren Lapidus, Alla Nolan, Matt Tice, Hope Del Rio, Tijana Glavina Copeland, Alex Cheng, Jan-Fang Lucas, Susan Chen, Feng Bruce, David Goodwin, Lynne Pitluck, Sam Ivanova, Natalia Mavromatis, Konstantinos Ovchinnikova, Galina Pati, Amrita Chen, Amy Palaniappan, Krishna Land, Miriam Hauser, Loren Chang, Yun-Juan Jeffries, Cynthia D. Chain, Patrick Saunders, Elizabeth Detter, John C. Brettin, Thomas Rohde, Manfred Goeker, Markus Spring, Stefan Bristow, Jim Markowitz, Victor Hugenholtz, Philip Kyrpides, Nikos C. Klenk, Hans-Peter Eisen, Jonathan A. TI Complete genome sequence of Thermanaerovibrio acidaminovorans type strain (Su883(T)) SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE strictly anaerobic; amino acid fermentation; thermophile; oxidative decarboxylation; lithotrophic; co-culture with Methanobacterium thermoautotrophicum; Synergistales; Synergistetes AB Thermanaerovibrio acidaminovorans (Guangsheng et al. 1997) Baena et al. 1999 is the type species of the genus Thermanaerovibrio and is of phylogenetic interest because of the very isolated location of the novel phylum Synergistetes. T. acidaminovorans Su883(T) is a Gram-negative, motile, non-spore-forming bacterium isolated from an anaerobic reactor of a sugar refinery in The Netherlands. Here we describe the features of this organism, together with the complete genome sequence, and annotation. This is the first completed genome sequence from a member of the phylum Synergistetes. The 1,848,474 bp long single replicon genome with its 1765 protein-coding and 60 RNA genes is part of the Genomic Encyclopedia of Bacteria and Archaea project. C1 [Chovatia, Mansi; Lapidus, Alla; Nolan, Matt; Tice, Hope; Del Rio, Tijana Glavina; Copeland, Alex; Cheng, Jan-Fang; Bruce, David; Goodwin, Lynne; Pitluck, Sam; Ivanova, Natalia; Mavromatis, Konstantinos; Ovchinnikova, Galina; Pati, Amrita; Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.; Chain, Patrick; Detter, John C.; Brettin, Thomas; Bristow, Jim; Hugenholtz, Philip; Kyrpides, Nikos C.; Eisen, Jonathan A.] US DOE, Joint Genome Inst, Walnut Creek, CA USA. [Sikorski, Johannes; Schroeder, Maren; Lucas, Susan; Chen, Feng; Goeker, Markus; Spring, Stefan; Klenk, Hans-Peter] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Bruce, David; Goodwin, Lynne; Saunders, Elizabeth; Detter, John C.; Brettin, Thomas] Los Alamos Natl Lab, Los Alamos, NM USA. [Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA. [Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Chain, Patrick] Lawrence Livermore Natl Lab, Livermore, CA USA. [Rohde, Manfred] HZI Helmholtz Ctr Infect Res, Braunschweig, Germany. [Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA. RP Kyrpides, NC (reprint author), US DOE, Joint Genome Inst, Walnut Creek, CA USA. RI Kyrpides, Nikos/A-6305-2014; Spring, Stefan/N-6933-2013; Lapidus, Alla/I-4348-2013; Hauser, Loren/H-3881-2012; Land, Miriam/A-6200-2011; chain, patrick/B-9777-2013 OI Kyrpides, Nikos/0000-0002-6131-0462; Spring, Stefan/0000-0001-6247-0938; Lapidus, Alla/0000-0003-0427-8731; Land, Miriam/0000-0001-7102-0031; FU US Department of Energy Office of Science, Biological and Environmental Research; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; Los Alamos National Laboratory [DE-AC02-06NA25396]; German Research Foundation (DFG) [INST 599/1-1] FX We would like to gratefully acknowledge the help of Susanne Schneider (DSMZ) for DNA extraction and quality analysis. This work was performed under the auspices of the US Department of Energy Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396, as well as German Research Foundation (DFG) INST 599/1-1. NR 22 TC 13 Z9 15 U1 1 U2 8 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 3 BP 254 EP 261 DI 10.4056/sigs.40645 PG 8 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17DA UT WOS:000207916700006 PM 21304665 ER PT J AU Pukall, R Gehrich-Schroter, G Lapidus, A Nolan, M Del Rio, TG Lucas, S Chen, F Tice, H Pitluck, S Cheng, JF Copeland, A Saunders, E Brettin, T Detter, JC Bruce, D Goodwin, L Pati, A Ivanova, N Mavrommatis, K Ovchinnikova, G Chen, A Palaniappan, K Land, M Hauser, L Chang, YJ Jeffries, CD Chain, P Goker, M Bristow, J Eisen, JA Markowitz, V Hugenholtz, P Kyrpides, NC Klenk, HP Han, C AF Pukall, Ruedieger Gehrich-Schroeter, Gabriele Lapidus, Alla Nolan, Matt Del Rio, Tijana Glavina Lucas, Susan Chen, Feng Tice, Hope Pitluck, Sam Cheng, Jan-Fang Copeland, Alex Saunders, Elizabeth Brettin, Thomas Detter, John C. Bruce, David Goodwin, Lynne Pati, Amrita Ivanova, Natalia Mavrommatis, Konstantinos Ovchinnikova, Galina Chen, Amy Palaniappan, Krishna Land, Miriam Hauser, Loren Chang, Yun-Juan Jeffries, Cynthia D. Chain, Patrick Goeker, Markus Bristow, Jim Eisen, Jonathan A. Markowitz, Victor Hugenholtz, Philip Kyrpides, Nikos C. Klenk, Hans-Peter Han, Cliff TI Complete genome sequence of Jonesia denitrificans type strain (Prevot 55134(T)) SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE Actinobacteria; Actinomycetales; Micrococcineae; Jonesiaceae; Gram-positive; irregular; nonsporulating rods; ox blood AB Jonesia denitrificans (Prevot 1961) Rocourt et al. 1987 is the type species of the genus Jonesia, and is of phylogenetic interest because of its isolated location in the actinobacterial suborder Micrococcineae. J. denitrificans is characterized by a typical coryneform morphology and is able to form irregular nonsporulating rods showing branched and club-like forms. Coccoid cells occur in older cultures. J. denitrificans is classified as a pathogenic organism for animals (vertebrates). The type strain whose genome is described here was originally isolated from cooked ox blood. Here we describe the features of this organism, together with the complete genome sequence and annotation. This is the first completed genome sequence of a member of the genus for which a complete genome sequence is described. The 2,749,646 bp long genome with its 2558 protein-coding and 71 RNA genes is part of the Genomic Encyclopedia of Bacteria and Archaea project. C1 [Pukall, Ruedieger; Gehrich-Schroeter, Gabriele; Goeker, Markus; Klenk, Hans-Peter] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Lapidus, Alla; Nolan, Matt; Del Rio, Tijana Glavina; Lucas, Susan; Chen, Feng; Tice, Hope; Pitluck, Sam; Cheng, Jan-Fang; Copeland, Alex; Saunders, Elizabeth; Brettin, Thomas; Detter, John C.; Bruce, David; Goodwin, Lynne; Pati, Amrita; Ivanova, Natalia; Mavrommatis, Konstantinos; Ovchinnikova, Galina; Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.; Chain, Patrick; Bristow, Jim; Eisen, Jonathan A.; Hugenholtz, Philip; Kyrpides, Nikos C.; Han, Cliff] US DOE, Joint Genome Inst, Walnut Creek, CA USA. [Saunders, Elizabeth; Brettin, Thomas; Detter, John C.; Bruce, David; Goodwin, Lynne; Han, Cliff] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA. [Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA. [Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Chain, Patrick] Lawrence Livermore Natl Lab, Livermore, CA USA. [Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA. RP Klenk, HP (reprint author), DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. RI Kyrpides, Nikos/A-6305-2014; Lapidus, Alla/I-4348-2013; Hauser, Loren/H-3881-2012; Land, Miriam/A-6200-2011; chain, patrick/B-9777-2013 OI Kyrpides, Nikos/0000-0002-6131-0462; Lapidus, Alla/0000-0003-0427-8731; Land, Miriam/0000-0001-7102-0031; FU US Department of Energy's Office of Science, Biological and Environmental Research; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; Los Alamos National Laboratory [DE-AC02-06NA25396]; German Research Foundation (DFG) [INST 599/1-1] FX We gratefully acknowledge the help of Susanne Schneider (DSMZ) for DNA extraction and quality analysis. This work was performed under the auspices of the US Department of Energy's Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396, as well as German Research Foundation (DFG) INST 599/1-1. NR 31 TC 3 Z9 10 U1 1 U2 3 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 3 BP 262 EP 269 DI 10.4056/sigs.41646 PG 8 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17DA UT WOS:000207916700007 PM 21304666 ER PT J AU Tindall, BJ Schneider, S Lapidus, A Copeland, A Del Rio, TG Nolan, M Lucas, S Chen, F Tice, H Cheng, JF Saunders, E Bruce, D Goodwin, L Pitluck, S Mikhailova, N Pati, A Ivanova, N Mavrommatis, K Chen, A Palaniappan, K Chain, P Land, M Hauser, L Chang, YJ Jeffries, CD Brettin, T Han, C Rohde, M Goker, M Bristow, J Eisen, JA Markowitz, V Hugenholtz, P Klenk, HP Kyrpides, NC Detter, JC AF Tindall, Brian J. Schneider, Susanne Lapidus, Alla Copeland, Alex Del Rio, Tijana Glavina Nolan, Matt Lucas, Susan Chen, Feng Tice, Hope Cheng, Jan-Fang Saunders, Elizabeth Bruce, David Goodwin, Lynne Pitluck, Sam Mikhailova, Natalia Pati, Amrita Ivanova, Natalia Mavrommatis, Konstantinos Chen, Amy Palaniappan, Krishna Chain, Patrick Land, Miriam Hauser, Loren Chang, Yun-Juan Jeffries, Cynthia D. Brettin, Thomas Han, Cliff Rohde, Manfred Goeker, Markus Bristow, Jim Eisen, Jonathan A. Markowitz, Victor Hugenholtz, Philip Klenk, Hans-Peter Kyrpides, Nikos C. Detter, John C. TI Complete genome sequence of Halomicrobium mukohataei type strain (arg-2(T)) SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE extreme halophile; mesophile; free-living; motile; non-pathogenic; facultatively anaerobic; rod-shaped; Halobacteriaceae AB Halomicrobium mukohataei (Ihara et al. 1997) Oren et al. 2002 is the type species of the genus Halomicrobium. It is of phylogenetic interest because of its isolated location within the large euryarchaeal family Halobacteriaceae. H. mukohataei is an extreme halophile that grows essentially aerobically, but can also grow anaerobically under a change of morphology and with nitrate as electron acceptor. The strain, whose genome is described in this report, is a free-living, motile, Gram-negative euryarchaeon, originally isolated from Salinas Grandes in Jujuy, Andes highlands, Argentina. Its genome contains three genes for the 16S rRNA that differ from each other by up to 9%. Here we describe the features of this organism, together with the complete genome sequence and annotation. This is the first completed genome sequence from the poorly populated genus Halomicrobium, and the 3,332,349 bp long genome (chromosome and one plasmid) with its 3416 protein-coding and 56 RNA genes is part of the Genomic Encyclopedia of Bacteria and Archaea project. C1 [Lapidus, Alla; Copeland, Alex; Del Rio, Tijana Glavina; Nolan, Matt; Lucas, Susan; Chen, Feng; Tice, Hope; Cheng, Jan-Fang; Saunders, Elizabeth; Bruce, David; Goodwin, Lynne; Pitluck, Sam; Mikhailova, Natalia; Pati, Amrita; Ivanova, Natalia; Mavrommatis, Konstantinos; Chain, Patrick; Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.; Brettin, Thomas; Han, Cliff; Bristow, Jim; Eisen, Jonathan A.; Hugenholtz, Philip; Kyrpides, Nikos C.; Detter, John C.] US DOE, Joint Genome Inst, Walnut Creek, CA USA. [Tindall, Brian J.; Schneider, Susanne; Goeker, Markus; Klenk, Hans-Peter] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Bruce, David; Goodwin, Lynne; Brettin, Thomas; Han, Cliff] Los Alamos Natl Lab, Los Alamos, NM USA. [Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA. [Chain, Patrick] Lawrence Livermore Natl Lab, Livermore, CA USA. [Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Rohde, Manfred] HZI Helmholtz Ctr Infect Res, Braunschweig, Germany. [Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA. RP Kyrpides, NC (reprint author), US DOE, Joint Genome Inst, Walnut Creek, CA USA. RI Hauser, Loren/H-3881-2012; Land, Miriam/A-6200-2011; chain, patrick/B-9777-2013; Kyrpides, Nikos/A-6305-2014; Lapidus, Alla/I-4348-2013 OI Land, Miriam/0000-0001-7102-0031; Kyrpides, Nikos/0000-0002-6131-0462; Lapidus, Alla/0000-0003-0427-8731 FU US Department of Energy's Office of Science, Biological and Environmental Research; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; Los Alamos National Laboratory [DE-AC02-06NA25396]; German Research Foundation (DFG) [INST 599/1-1] FX We would like to gratefully acknowledge the assistance of Regine Fahnrich and Helga Pomrenke (both at DSMZ) in cultivation of the strain. This work was performed under the auspices of the US Department of Energy's Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396 as well as German Research Foundation (DFG) INST 599/1-1. NR 24 TC 15 Z9 24 U1 1 U2 3 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 3 BP 270 EP 277 DI 10.4056/sigs.42644 PG 8 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17DA UT WOS:000207916700008 PM 21304667 ER PT J AU Nolan, M Gronow, S Lapidus, A Ivanova, N Copeland, A Lucas, S Del Rio, TG Chen, F Tice, H Pitluck, S Cheng, JF Sims, D Meincke, L Bruce, D Goodwin, L Brettin, T Han, C Detter, JC Ovchinikova, G Pati, A Mavromatis, K Mikhailova, N Chen, A Palaniappan, K Land, M Hauser, L Chang, YJ Jeffries, CD Rohde, M Sproer, C Goker, M Bristow, J Eisen, JA Markowitz, V Hugenholtz, P Kyrpides, NC Klenk, HP Chain, P AF Nolan, Matt Gronow, Sabine Lapidus, Alla Ivanova, Natalia Copeland, Alex Lucas, Susan Del Rio, Tijana Glavina Chen, Feng Tice, Hope Pitluck, Sam Cheng, Jan-Fang Sims, David Meincke, Linda Bruce, David Goodwin, Lynne Brettin, Thomas Han, Cliff Detter, John C. Ovchinikova, Galina Pati, Amrita Mavromatis, Konstantinos Mikhailova, Natalia Chen, Amy Palaniappan, Krishna Land, Miriam Hauser, Loren Chang, Yun-Juan Jeffries, Cynthia D. Rohde, Manfred Sproeer, Cathrin Goeker, Markus Bristow, Jim Eisen, Jonathan A. Markowitz, Victor Hugenholtz, Philip Kyrpides, Nikos C. Klenk, Hans-Peter Chain, Patrick TI Complete genome sequence of Rhodothermus marinus type strain (R-10(T)) SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE thermophile; alkaliphile; nonmotile; non-sporulating; aerobic; heterotroph; Sphingobacteriales; Rhodothermaceae ID ESCHERICHIA-COLI; GENE; CLONING; BACTERIA; ARCHAEA; SYSTEM; EXPRESSION; XYLANASE AB Rhodothermus marinus Alfredsson et al. 1995 is the type species of the genus and is of phylogenetic interest because the Rhodothermaceae represent the deepest lineage in the phylum Bacteroidetes. R. marinus R-10(T) is a Gram-negative, non-motile, non-spore-forming bacterium isolated from marine hot springs off the coast of Iceland. Strain R-10(T) is strictly aerobic and requires slightly halophilic conditions for growth. Here we describe the features of this organism, together with the complete genome sequence, and annotation. This is the first complete genome sequence of the genus Rhodothermus, and only the second sequence from members of the family Rhodothermaceae. The 3,386,737 bp genome (including a 125 kb plasmid) with its 2914 protein-coding and 48 RNA genes is part of the Genomic Encyclopedia of Bacteria and Archaea project. C1 [Gronow, Sabine; Sproeer, Cathrin; Goeker, Markus; Klenk, Hans-Peter] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Nolan, Matt; Lapidus, Alla; Ivanova, Natalia; Copeland, Alex; Lucas, Susan; Del Rio, Tijana Glavina; Chen, Feng; Tice, Hope; Pitluck, Sam; Cheng, Jan-Fang; Sims, David; Meincke, Linda; Bruce, David; Goodwin, Lynne; Brettin, Thomas; Han, Cliff; Detter, John C.; Ovchinikova, Galina; Pati, Amrita; Mavromatis, Konstantinos; Mikhailova, Natalia; Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.; Bristow, Jim; Eisen, Jonathan A.; Hugenholtz, Philip; Kyrpides, Nikos C.; Chain, Patrick] US DOE, Genome Inst, Walnut Creek, CA USA. [Sims, David; Meincke, Linda; Bruce, David; Goodwin, Lynne; Brettin, Thomas; Han, Cliff; Detter, John C.; Chain, Patrick] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA. [Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA. [Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Rohde, Manfred] HZI Helmholtz Ctr Infect Res, Braunschweig, Germany. [Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA. RP Klenk, HP (reprint author), DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. RI Hauser, Loren/H-3881-2012; Land, Miriam/A-6200-2011; chain, patrick/B-9777-2013; Kyrpides, Nikos/A-6305-2014; Lapidus, Alla/I-4348-2013 OI Land, Miriam/0000-0001-7102-0031; Kyrpides, Nikos/0000-0002-6131-0462; Lapidus, Alla/0000-0003-0427-8731 FU US Department of Energy's Office of Science, Biological and Environmental Research; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; Los Alamos National Laboratory [DE-AC02-06NA25396]; German Research Foundation (DFG) [INST 599/1-1] FX We would like to gratefully acknowledge the help of Susanne Schneider (DSMZ) for DNA extraction and quality analysis. This work was performed under the auspices of the US Department of Energy's Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396, as well as German Research Foundation (DFG) INST 599/1-1. NR 28 TC 13 Z9 18 U1 2 U2 6 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 3 BP 283 EP 291 DI 10.4056/sigs46736 PG 9 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17DA UT WOS:000207916700010 PM 21304669 ER PT J AU Munk, C Lapidus, A Copeland, A Jando, M Mayilraj, S Del Rio, TG Nolan, M Chen, F Lucas, S Tice, H Cheng, JF Han, C Detter, JC Bruce, D Goodwin, L Chain, P Pitluck, S Goker, M Ovchinikova, G Pati, A Ivanova, N Mavromatis, K Chen, A Palaniappan, K Land, M Hauser, L Chang, YJ Jeffries, CD Bristow, J Eisen, JA Markowitz, V Hugenholtz, P Kyrpides, NC Klenk, HP AF Munk, Chris Lapidus, Alla Copeland, Alex Jando, Marlen Mayilraj, Shanmugam Del Rio, Tijana Glavina Nolan, Matt Chen, Feng Lucas, Susan Tice, Hope Cheng, Jan-Fang Han, Cliff Detter, John C. Bruce, David Goodwin, Lynne Chain, Patrick Pitluck, Sam Goeker, Markus Ovchinikova, Galina Pati, Amrita Ivanova, Natalia Mavromatis, Konstantinos Chen, Amy Palaniappan, Krishna Land, Miriam Hauser, Loren Chang, Yun-Juan Jeffries, Cynthia D. Bristow, Jim Eisen, Jonathan A. Markowitz, Victor Hugenholtz, Philip Kyrpides, Nikos C. Klenk, Hans-Peter TI Complete genome sequence of Stackebrandtia nassauensis type strain (LLR-40K-21(T)) SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE aerobic; Gram-positive; non-acid-fast; mycelium producing; 2-hydroxy fatty acids-containing; Glycomycetaceae AB Stackebrandtia nassauensis Labeda and Kroppenstedt (2005) is the type species of the genus Stackebrandtia, and a member of the actinobacterial family Glycomycetaceae. Stackebrandtia currently contains two species, which are differentiated from Glycomyces spp. by cellular fatty acid and menaquinone composition. Strain LLR-40K-21(T) is Gram-positive, aerobic, and nonmotile, with a branched substrate mycelium and on some media an aerial mycelium. The strain was originally isolated from a soil sample collected from a road side in Nassau, Bahamas. Here we describe the features of this organism, together with the complete genome sequence and annotation. This is the first complete genome sequence of the actinobacterial suborder Glycomycineae. The 6,841,557 bp long single replicon genome with its 6487 protein-coding and 53 RNA genes is part of the Genomic Encyclopedia of Bacteria and Archaea project. C1 [Jando, Marlen; Mayilraj, Shanmugam; Goeker, Markus; Klenk, Hans-Peter] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Munk, Chris; Han, Cliff; Detter, John C.; Bruce, David; Goodwin, Lynne; Chain, Patrick; Eisen, Jonathan A.] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA. [Lapidus, Alla; Copeland, Alex; Del Rio, Tijana Glavina; Nolan, Matt; Chen, Feng; Lucas, Susan; Tice, Hope; Cheng, Jan-Fang; Han, Cliff; Detter, John C.; Bruce, David; Goodwin, Lynne; Chain, Patrick; Pitluck, Sam; Ovchinikova, Galina; Pati, Amrita; Ivanova, Natalia; Mavromatis, Konstantinos; Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.; Bristow, Jim; Hugenholtz, Philip; Kyrpides, Nikos C.] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Mayilraj, Shanmugam] Microbial Type Culture Collect, Inst Microbial Technol, Chandigarh, India. [Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA. [Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA. RP Klenk, HP (reprint author), DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. RI Hauser, Loren/H-3881-2012; Land, Miriam/A-6200-2011; chain, patrick/B-9777-2013; Kyrpides, Nikos/A-6305-2014; Lapidus, Alla/I-4348-2013 OI Land, Miriam/0000-0001-7102-0031; Kyrpides, Nikos/0000-0002-6131-0462; Lapidus, Alla/0000-0003-0427-8731 FU US Department of Energy's Office of Science, Biological and Environmental Research; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; Los Alamos National Laboratory [DE-AC02-06NA25396]; German Research Foundation (DFG) [INST 599/1-1]; Indian Council of Scientific and Industrial Research FX We would like to gratefully acknowledge the help of Susanne Schneider (DSMZ) for DNA extraction and quality analysis. This work was performed under the auspices of the US Department of Energy's Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396. German Research Foundation (DFG) INST 599/1-1 supported DSMZ, and the Indian Council of Scientific and Industrial Research provided a Raman Research Fellow to Shanmugam Mayilraj. NR 20 TC 6 Z9 13 U1 1 U2 2 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 3 BP 292 EP 299 DI 10.4056/sigs.47643 PG 8 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17DA UT WOS:000207916700011 ER PT J AU Nolan, M Gronow, S Lapidus, A Ivanova, N Copeland, A Lucas, S Del Rio, TG Chen, F Tice, H Pitluck, S Cheng, JF Sims, D Meincke, L Bruce, D Goodwin, L Brettin, T Han, C Detter, JC Ovchinikova, G Pati, A Mavromatis, K Mikhailova, N Chen, A Palaniappan, K Land, M Hauser, L Chang, YJ Jeffries, CD Rohde, M Sproer, C Goker, M Bristow, J Eisen, JA Markowitz, V Hugenholtz, P Kyrpides, NC Klenk, HP Chain, P AF Nolan, Matt Gronow, Sabine Lapidus, Alla Ivanova, Natalia Copeland, Alex Lucas, Susan Del Rio, Tijana Glavina Chen, Feng Tice, Hope Pitluck, Sam Cheng, Jan-Fang Sims, David Meincke, Linda Bruce, David Goodwin, Lynne Brettin, Thomas Han, Cliff Detter, John C. Ovchinikova, Galina Pati, Amrita Mavromatis, Konstantinos Mikhailova, Natalia Chen, Amy Palaniappan, Krishna Land, Miriam Hauser, Loren Chang, Yun-Juan Jeffries, Cynthia D. Rohde, Manfred Sproeer, Cathrin Goeker, Markus Bristow, Jim Eisen, Jonathan A. Markowitz, Victor Hugenholtz, Philip Kyrpides, Nikos C. Klenk, Hans-Peter Chain, Patrick TI Complete genome sequence of Streptobacillus moniliformis type strain (9901(T)) SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE Fusobacteria; 'Leptotrichiaceae'; Gram-negative; rods in chains; L-form; zoonotic disease; non-motile; non-sporulating; facultative anaerobic; Tree of Life ID BACTERIA; ERYTHEMA; ARCHAEA; SYSTEM; FEVER AB Streptobacillus moniliformis Levaditi et al. 1925 is the type and sole species of the genus Streptobacillus, and is of phylogenetic interest because of its isolated location in the sparsely populated and neither taxonomically nor genomically much accessed family 'Leptotrichiaceae' within the phylum Fusobacteria. The 'Leptotrichiaceae' have not been well characterized, genomically or taxonomically. S. moniliformis, is a Gram-negative, nonmotile, pleomorphic bacterium and is the etiologic agent of rat bite fever and Haverhill fever. Strain 9901(T), the type strain of the species, was isolated from a patient with rat bite fever. Here we describe the features of this organism, together with the complete genome sequence and annotation. This is only the second completed genome sequence of the order Fusobacteriales and no more than the third sequence from the phylum Fusobacteria. The 1,662,578 bp long chromosome and the 10,702 bp plasmid with a total of 1511 protein-coding and 55 RNA genes are part of the Genomic Encyclopedia of Bacteria and Archaea project. C1 [Gronow, Sabine; Sproeer, Cathrin; Goeker, Markus; Klenk, Hans-Peter] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Nolan, Matt; Lapidus, Alla; Ivanova, Natalia; Copeland, Alex; Lucas, Susan; Del Rio, Tijana Glavina; Chen, Feng; Tice, Hope; Pitluck, Sam; Cheng, Jan-Fang; Sims, David; Meincke, Linda; Bruce, David; Goodwin, Lynne; Brettin, Thomas; Han, Cliff; Detter, John C.; Ovchinikova, Galina; Pati, Amrita; Mavromatis, Konstantinos; Mikhailova, Natalia; Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.; Bristow, Jim; Eisen, Jonathan A.; Hugenholtz, Philip; Kyrpides, Nikos C.; Chain, Patrick] US DOE, Joint Genome Inst, Walnut Creek, CA USA. [Sims, David; Meincke, Linda; Bruce, David; Goodwin, Lynne; Brettin, Thomas; Han, Cliff; Detter, John C.; Chain, Patrick] Los Alamos Natl Lab, Los Alamos, NM USA. [Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA. [Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Rohde, Manfred] HZI Helmholtz Ctr Infect Res, Braunschweig, Germany. [Eisen, Jonathan A.] Univ Calif Davis, Davis, CA 95616 USA. RP Klenk, HP (reprint author), DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. RI Hauser, Loren/H-3881-2012; Land, Miriam/A-6200-2011; chain, patrick/B-9777-2013; Kyrpides, Nikos/A-6305-2014; Lapidus, Alla/I-4348-2013 OI Land, Miriam/0000-0001-7102-0031; Kyrpides, Nikos/0000-0002-6131-0462; Lapidus, Alla/0000-0003-0427-8731 FU US Department of Energy Office of Science, Biological and Environmental Research; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; Los Alamos National Laboratory [DE-AC02-06NA25396]; German Research Foundation (DFG) [INST 599/1-1] FX We would like to gratefully acknowledge the help of Sabine Welnitz for growing S. moniliformis cultures and Susanne Schneider for DNA extraction and quality analysis (both at DSMZ). This work was performed under the auspices of the US Department of Energy Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396, as well as German Research Foundation (DFG) INST 599/1-1. NR 29 TC 13 Z9 15 U1 1 U2 4 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 3 BP 300 EP 307 DI 10.4056/sigs.48727 PG 8 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17DA UT WOS:000207916700012 PM 21304670 ER PT J AU Clum, A Tindall, BJ Sikorski, J Ivanova, N Mavrommatis, K Lucas, S Del Rio, TG Nolan, M Chen, F Tice, H Pitluck, S Cheng, JF Chertkov, O Brettin, T Han, C Detter, JC Kuske, C Bruce, D Goodwin, L Ovchinikova, G Pati, A Mikhailova, N Chen, A Palaniappan, K Land, M Hauser, L Chang, YJ Jeffries, CD Chain, P Rohde, M Goker, M Bristow, J Eisen, JA Markowitz, V Hugenholtz, P Kyrpides, NC Klenk, HP Lapidus, A AF Clum, Alicia Tindall, Brian J. Sikorski, Johannes Ivanova, Natalia Mavrommatis, Konstantinos Lucas, Susan Del Rio, Tijana Glavina Nolan, Matt Chen, Feng Tice, Hope Pitluck, Sam Cheng, Jan-Fang Chertkov, Olga Brettin, Thomas Han, Cliff Detter, John C. Kuske, Cheryl Bruce, David Goodwin, Lynne Ovchinikova, Galina Pati, Amrita Mikhailova, Natalia Chen, Amy Palaniappan, Krishna Land, Miriam Hauser, Loren Chang, Yun-Juan Jeffries, Cynthia D. Chain, Patrick Rohde, Manfred Goeker, Markus Bristow, Jim Eisen, Jonathan A. Markowitz, Victor Hugenholtz, Philip Kyrpides, Nikos C. Klenk, Hans-Peter Lapidus, Alla TI Complete genome sequence of Pirellula staleyi type strain (ATCC 27377(T)) SO STANDARDS IN GENOMIC SCIENCES LA English DT Article DE non-prosthecate budding bacteria; developmental life cycle; Gram-negative; mesophile; Planctomycetaceae; 'Planctomycetes'; GEBA AB Pirellula staleyi Schlesner and Hirsch 1987 is the type species of the genus Pirellula of the family Planctomycetaceae. Members of this pear-or teardrop-shaped bacterium show a clearly visible pointed attachment pole and can be distinguished from other Planctomycetes by a lack of true stalks. Strains closely related to the species have been isolated from fresh and brackish water, as well as from hypersaline lakes. Here we describe the features of this organism, together with the complete genome sequence and annotation. This is the first completed genome sequence of the order Planctomyces and only the second sequence from the phylum Planctomycetes. The 6,196,199 bp long genome with its 4773 protein-coding and 49 RNA genes is a part of the Genomic Encyclopedia of Bacteria and Archaea project. C1 [Clum, Alicia; Ivanova, Natalia; Mavrommatis, Konstantinos; Lucas, Susan; Del Rio, Tijana Glavina; Nolan, Matt; Chen, Feng; Tice, Hope; Pitluck, Sam; Cheng, Jan-Fang; Chertkov, Olga; Brettin, Thomas; Han, Cliff; Detter, John C.; Kuske, Cheryl; Bruce, David; Goodwin, Lynne; Ovchinikova, Galina; Pati, Amrita; Mikhailova, Natalia; Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.; Chain, Patrick; Bristow, Jim; Eisen, Jonathan A.; Hugenholtz, Philip; Kyrpides, Nikos C.; Lapidus, Alla] US DOE, Joint Genome Inst, Walnut Creek, CA USA. [Tindall, Brian J.; Sikorski, Johannes; Goeker, Markus; Klenk, Hans-Peter] DSMZ German Collect Microorganisms & Cell Culture, Braunschweig, Germany. [Chertkov, Olga; Brettin, Thomas; Han, Cliff; Detter, John C.; Kuske, Cheryl; Bruce, David; Goodwin, Lynne; Chain, Patrick] Los Alamos Natl Lab, Los Alamos, NM USA. [Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA. [Land, Miriam; Hauser, Loren; Chang, Yun-Juan; Jeffries, Cynthia D.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Rohde, Manfred] HZI Helmholtz Ctr Infect Res, Braunschweig, Germany. [Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA. RP Lapidus, A (reprint author), US DOE, Joint Genome Inst, Walnut Creek, CA USA. RI Hauser, Loren/H-3881-2012; Land, Miriam/A-6200-2011; chain, patrick/B-9777-2013; Kyrpides, Nikos/A-6305-2014; Lapidus, Alla/I-4348-2013 OI Land, Miriam/0000-0001-7102-0031; Kyrpides, Nikos/0000-0002-6131-0462; Lapidus, Alla/0000-0003-0427-8731 FU US Department of Energy's Office of Science, Biological and Environmental Research; University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; Los Alamos National Laboratory [DE-AC02-06NA25396]; German Research Foundation (DFG) [INST 599/1-1] FX We would like to gratefully acknowledge the help of Regine F hnrich for growing P. staleyi cultures and Susanne Schneider for DNA extraction and quality analysis (both at DSMZ). This work was performed under the auspices of the US Department of Energy's Office of Science, Biological and Environmental Research Program, and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396, as well as German Research Foundation (DFG) INST 599/1-1. NR 36 TC 11 Z9 16 U1 2 U2 9 PU GENOMIC STAND CONSORT PI EAST LANSING PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS SCI BLDG, EAST LANSING, MI 48824 USA SN 1944-3277 J9 STAND GENOMIC SCI JI Stand. Genomic Sci. PY 2009 VL 1 IS 3 BP 308 EP 316 DI 10.4056/sigs.51657 PG 9 WC Genetics & Heredity; Microbiology SC Genetics & Heredity; Microbiology GA V17DA UT WOS:000207916700013 PM 21304671 ER PT B AU Luo, ZJ Allam, AS Tucker, DL Chen, JZ Shu, CG AF Luo, Z. J. Allam, A. S. Tucker, D. L. Chen, J. Z. Shu, C. G. BE Wang, W Yang, SQ Luo, ZJ Chen, Z TI The Properties of Isolated Merging Pairs Selected from the DR2 of the SDSS SO STARBURST-AGN CONNECTION SE Astronomical Society of the Pacific Conference Series LA English DT Proceedings Paper CT International Conference on the Starburst-AGN Connection CY OCT 27-31, 2008 CL Shanghai Normal Univ, Shanghai, PEOPLES R CHINA HO Shanghai Normal Univ ID STAR-FORMATION HISTORY; DIGITAL SKY SURVEY; EARLY DATA RELEASE; GALAXIES AB Based on the catalog of merging galaxies in the DR2 of the SDSS, the effect of galaxy interactions on the star formation activities is investigated. It is found that interactions between early-type merging galaxies does not enhance significant star formation activity while it does for late-type merging galaxies. Star formation activity is strong correlated with the pair projected separations. For major mergers, the star formation can last longer for closer galaxies while there is no significant difference for minor mergers. C1 [Luo, Z. J.; Chen, J. Z.; Shu, C. G.] Shanghai Normal Univ, Shanghai Key Lab Astrophys, Shanghai 200234, Peoples R China. [Allam, A. S.; Tucker, D. L.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Luo, ZJ (reprint author), Shanghai Normal Univ, Shanghai Key Lab Astrophys, Shanghai 200234, Peoples R China. FU NSFC [10878003]; Shanghai Research Foundations; Shanghai Normal University Leading Academic Discipline [DZL805] FX This work is partly supported by the NSFC No. 10878003, the Shanghai Research Foundations and Shanghai Normal University Leading Academic Discipline Project DZL805. NR 5 TC 0 Z9 0 U1 0 U2 1 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA BN 978-1-58381-696-7 J9 ASTR SOC P PY 2009 VL 408 BP 221 EP + PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BQJ82 UT WOS:000281192900042 ER PT B AU Urrutia, T Lacy, M Becker, R Glikman, E AF Urrutia, T. Lacy, M. Becker, R. Glikman, E. BE Wang, W Yang, SQ Luo, ZJ Chen, Z TI Host Galaxies of Young Dust-Reddened Quasars SO STARBURST-AGN CONNECTION SE Astronomical Society of the Pacific Conference Series LA English DT Proceedings Paper CT International Conference on the Starburst-AGN Connection CY OCT 27-31, 2008 CL Shanghai Normal Univ, Shanghai, PEOPLES R CHINA HO Shanghai Normal Univ ID MERGERS AB We present results on a multiwavelength campaign to identify the nature of dust-reddened Type 1 quasars. These quasars were selected by matching FIRST, 2MASS and very red optical counterparts with r(1) - K > 5. We find a very high fraction of Low Ionization Broad Absorption Line Quasars (LoBALs) among AGN selected with this method, perhaps a sign of quasar feedback. From X-ray observations and Balmer decrement measurements, the obscuring dust is most likely located in a cold absorber such as the host galaxy, rather than from a torus near the AGN. Hubble ACS imaging of a sub-sample of these sources showed a very high fraction of interacting and merging systems. The quasars appear to be very young in which dust from the merging galaxies is still settling in. Spitzer IRS and MIPS data show star formation signatures and deep Silicate absorption features in these objects, but overall the quasar is the dominant source in the Mid-infrared. C1 [Urrutia, T.; Lacy, M.] IPAC Caltech, Spitzer Sci Ctr, Pasadena, CA 91125 USA. [Becker, R.] Univ Calif Davis, Livermore, CA 95616 USA. [Becker, R.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Glikman, E.] CALTECH, Pasadena, CA 91125 USA. RP Urrutia, T (reprint author), IPAC Caltech, Spitzer Sci Ctr, Pasadena, CA 91125 USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA BN 978-1-58381-696-7 J9 ASTR SOC P PY 2009 VL 408 BP 299 EP + PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BQJ82 UT WOS:000281192900057 ER PT J AU Steinwart, I AF Steinwart, Ingo TI Two oracle inequalities for regularized boosting classifiers SO STATISTICS AND ITS INTERFACE LA English DT Article DE Statistical learning theory; boosting; regularization; oracle inequality; learning rates ID METRIC ENTROPY; CLASSIFICATION; CONSISTENCY; CONVERGENCE AB We derive two oracle inequalities for regularized boosting algorithms for classification. The first oracle inequality generalizes and refines a result from Blanchard et al. (2003), while the second oracle inequality leads to faster learning rates than those of Blanchard et al. (2003) whenever the set of weak learners does not perfectly approximate the target function. The techniques leading to the second oracle inequality are based on the well-known approach of adding some artificial noise to the labeling process. C1 [Steinwart, Ingo] Los Alamos Natl Lab, Informat Sci Grp CCS 3, Los Alamos, NM 87545 USA. RP Steinwart, I (reprint author), Los Alamos Natl Lab, Informat Sci Grp CCS 3, POB 1663, Los Alamos, NM 87545 USA. EM ingo@lanl.gov NR 21 TC 3 Z9 3 U1 1 U2 1 PU INT PRESS BOSTON, INC PI SOMERVILLE PA PO BOX 43502, SOMERVILLE, MA 02143 USA SN 1938-7989 EI 1938-7997 J9 STAT INTERFACE JI Stat. Interface PY 2009 VL 2 IS 3 BP 271 EP 284 PG 14 WC Mathematical & Computational Biology; Mathematics, Interdisciplinary Applications SC Mathematical & Computational Biology; Mathematics GA 660NN UT WOS:000282650400003 ER PT J AU Christmann, A Van Messem, A Steinwart, I AF Christmann, Andreas Van Messem, Arnout Steinwart, Ingo TI On consistency and robustness properties of Support Vector Machines for heavy-tailed distributions SO STATISTICS AND ITS INTERFACE LA English DT Article ID CONVEX RISK MINIMIZATION; REGRESSION AB Support Vector Machines (SVMs) are known to be consistent and robust for classification and regression if they are based on a Lipschitz continuous loss function and on a bounded kernel with a dense and separable reproducing kernel Hilbert space. These facts are even true in the regression context for unbounded output spaces, if the target function f is integrable with respect to the marginal distribution of the input variable X and if the output variable Y has a finite first absolute moment. The latter assumption clearly excludes distributions with heavy tails, e. g., several stable distributions or some extreme value distributions which occur in financial or insurance projects. The main point of this paper is that we can enlarge the applicability of SVMs even to heavy-tailed distributions, which violate this moment condition. Results on existence, uniqueness, representation, consistency, and statistical robustness are given. C1 [Christmann, Andreas] Univ Bayreuth, Dept Math, D-95440 Bayreuth, Germany. [Van Messem, Arnout] Vrije Univ Brussel, Dept Math, B-1050 Brussels, Belgium. [Steinwart, Ingo] Los Alamos Natl Lab, Informat Sci Grp CCS 3, Los Alamos, NM 87545 USA. RP Christmann, A (reprint author), Univ Bayreuth, Dept Math, POB 101251, D-95440 Bayreuth, Germany. EM andreas.christmann@uni-bayreuth.de; avmessem@vub.ac.be; ingo@lanl.gov RI Van Messem, Arnout/B-4814-2015 OI Van Messem, Arnout/0000-0001-8545-7437 NR 28 TC 11 Z9 11 U1 0 U2 2 PU INT PRESS BOSTON, INC PI SOMERVILLE PA PO BOX 43502, SOMERVILLE, MA 02143 USA SN 1938-7989 EI 1938-7997 J9 STAT INTERFACE JI Stat. Interface PY 2009 VL 2 IS 3 BP 311 EP 327 PG 17 WC Mathematical & Computational Biology; Mathematics, Interdisciplinary Applications SC Mathematical & Computational Biology; Mathematics GA 660NN UT WOS:000282650400006 ER PT S AU Cox, AN AF Cox, Arthur N. BE Guzik, JA Bradley, PA TI Radial and Nonradial Beating Modes for RR Lyrae Variable Star Blazhko Effect SO STELLAR PULSATION: CHALLENGES FOR THEORY AND OBSERVATION SE AIP Conference Proceedings LA English DT Proceedings Paper CT International Conference on Stellar Pulsation - Challenges for Theory and Observation CY MAY 31-JUN 05, 2009 CL Santa Fe, NM SP Los Alamos Natl Lab, Ctr Space Sci & Explorat, Inst Geophys & Planetary Phys, TAE Photo & Design, La Fonda Plaza DE Blazhko Effect; Double-Mode RR Lyrae Variables ID EXCITATION AB At the eleventh conference in the Los Alamos pulsation series in 1992, this author suggested that the observed fundamental mode period of the variable star RR Lyrae can beat with the nonradial 1=1, g4 mode to produce the observed Blazhko effect seen in that star. Two earlier papers were by Borkowski (1980) and Moskalik (1986), both using only radial modes. Consideration of nonradial modes for other RR Lyrae variables allows many modes, with some that are as close as one or two percent in period to the observed radial fundamental mode. My 1992 publication stated that the nonradial mode was weakly pulsationally unstable, but now with my improved codes, the indication is that the close nonradial modes are always just slightly stable. For this case then, the nonradial mode needs to be excited by nonlinear coupling to the radial mode which is often possible. See Diembowski and Mizerski (2004); Van Hoolst, Dziembowski, and Kawaler (1998); and Nowakowski and Dziembowski (2001) for these RR Lyrae type variables. Many other stars have these solar-like, non self-excited pulsations. For the observed double-mode RR Lyrae variables, beating is possible with both the observed radial modes, and complicated nonlinear pulsations can be predicted. It is found that the cooler RR Lyrae variables have large nonradial mode damping, making coupling less likely, and so the Blazhko effect ones must be hotter, near the ab type fundamental mode blue edges, as observed. C1 Los Alamos Natl Lab, Div Theoret Phys, Los Alamos, NM 87545 USA. RP Cox, AN (reprint author), Los Alamos Natl Lab, Div Theoret Phys, MS B227,POB 1663, Los Alamos, NM 87545 USA. NR 8 TC 4 Z9 4 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0707-7 J9 AIP CONF PROC PY 2009 VL 1170 BP 276 EP 277 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BPW04 UT WOS:000280126200062 ER PT S AU Cox, AN Despain, KM AF Cox, Arthur N. Despain, Kate M. BE Guzik, JA Bradley, PA TI Pulsation and Convection in Luminous Blue Variables SO STELLAR PULSATION: CHALLENGES FOR THEORY AND OBSERVATION SE AIP Conference Proceedings LA English DT Proceedings Paper CT International Conference on Stellar Pulsation - Challenges for Theory and Observation CY MAY 31-JUN 05, 2009 CL Santa Fe, NM SP Los Alamos Natl Lab, Ctr Space Sci & Explorat, Inst Geophys & Planetary Phys, TAE Photo & Design, La Fonda Plaza DE Main Sequence Variable Stars; Luminous Blue Variables; Massive Stars ID MASS-LOSS; STELLAR EVOLUTION; MAIN SEQUENCE; MODELS; STARS; OPAL AB The most massive stars born on the main sequence display pulsations that are excited by several processes: the epsilon process; a poorly investigated process that excites the extensive mass loss of Wolf Rayet stars; and the Eddington luminosity coupled with convection in the luminous blue variable stars. Here we discuss details involved in the luminous blue variables, and how their growing pulsations can produce outbursts that reduce the total mass of the star to a level where the pulsations no longer grow. This process limits the most massive stars possible in our galaxy to 100 solar masses or less. C1 [Cox, Arthur N.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Cox, AN (reprint author), Los Alamos Natl Lab, Div Theoret, MS B227,POB 1663, Los Alamos, NM 87545 USA. NR 20 TC 0 Z9 0 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0707-7 J9 AIP CONF PROC PY 2009 VL 1170 BP 335 EP 338 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BPW04 UT WOS:000280126200077 ER PT S AU Garg, A AF Garg, Arti CA SuperMACHO Collaboration BE Guzik, JA Bradley, PA TI HADS in the Large Magellanic Cloud: Initial Findings from the SuperMACHO Project SO STELLAR PULSATION: CHALLENGES FOR THEORY AND OBSERVATION SE AIP Conference Proceedings LA English DT Proceedings Paper CT International Conference on Stellar Pulsation - Challenges for Theory and Observation CY MAY 31-JUN 05, 2009 CL Santa Fe, NM SP Los Alamos Natl Lab, Ctr Space Sci & Explorat, Inst Geophys & Planetary Phys, TAE Photo & Design, La Fonda Plaza DE Time series analysis ID IMAGE SUBTRACTION; GALAXY; SPACE; STARS; TIME AB The SuperMACHO Project is a five-year survey toward the Large Magellanic Cloud (LMC) aimed at understanding the nature of the populations of lenses responsible for the excess microlensing rates observed by the MACHO project [1]. Survey observations were completed in 2006. A rich side-product of this survey is a catalog of variable sources down to a depth of VR 23, including many classes of pulsating variables such as delta-Scuti and RR Lyrae. Through their position in the Period-Luminosity diagram and their light curve characteristics we have identified 2323 high amplitude delta-Scuti (HADS) having high quality light curves. Using Fourier decomposition of the HADS light curves, we find that the period-luminosity (PL) relation defined by the first-overtone (FO) pulsators does not show a clear separation from the PL-relation defined by the fundamental (F) pulsators. This differs from other instability strip pulsators such as type c RR Lyrae. We also present evidence for a larger amplitude, subluminous population of HADS similar to that observed in Fornax [2]. C1 [Garg, Arti; SuperMACHO Collaboration] Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, Livermore, CA 94550 USA. RP Garg, A (reprint author), Lawrence Livermore Natl Lab, Inst Geophys & Planetary Phys, 7000 East Ave,L-413, Livermore, CA 94550 USA. NR 13 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0707-7 J9 AIP CONF PROC PY 2009 VL 1170 BP 418 EP 422 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BPW04 UT WOS:000280126200096 ER PT S AU Guzik, JA Keady, JJ Kilcrease, DP AF Guzik, Joyce Ann Keady, J. J. Kilcrease, D. P. BE Guzik, JA Bradley, PA TI Early Solar Mass Loss, Opacity Uncertainties, and the Solar Abundance Problem SO STELLAR PULSATION: CHALLENGES FOR THEORY AND OBSERVATION SE AIP Conference Proceedings LA English DT Proceedings Paper CT International Conference on Stellar Pulsation - Challenges for Theory and Observation CY MAY 31-JUN 05, 2009 CL Santa Fe, NM SP Los Alamos Natl Lab, Ctr Space Sci & Explorat, Inst Geophys & Planetary Phys, TAE Photo & Design, La Fonda Plaza DE oscillations; Sun: abundances; helioseismology; mass loss; solar wind ID ELEMENT DIFFUSION; REVISED ABUNDANCES; MODELS; HELIOSEISMOLOGY; SUN; EARTH; OPAL AB Solar models calibrated with the new element abundance mixture of Asplund et al. published in 2005 no longer produce good agreement with the sound speed, convection zone depth, and convection zone helium abundance inferred from solar oscillation data. Attempts to modify the input physics of the standard model, for example, by including enhanced diffusion, increased opacities, accretion, convective overshoot, or gravity waves have not restored the good agreement attained with the prior abundances. Here we present new models including early mass loss via a stronger solar wind. Early mass loss has been investigated prior to the solar abundance problem to deplete lithium and resolve the 'faint early sun problem'. We find that mass loss modifies the core structure and deepens the convection zone, and so improves agreement with oscillation data using the new abundances; however the amount of mass loss must be small to avoid destroying all of the surface lithium, and agreement is not fully restored. We also considered the prospects for increasing solar interior opacities. In order to increase mixture opacities by the 30% required to mitigate the abundance problem, the opacities of individual elements (e.g., O, N, C, and Fe) must be revised by a factor of two to three for solar interior conditions; we are investigating the possibility of broader calculated line wings for bound-bound transitions at the relevant temperatures to enhance opacity. We find that including all of the elements in the AGS05 opacity mixture (through uranium at atomic number Z=92) instead of only the 17 elements in the OPAL opacity mixture increases opacities by a negligible 0.2%. C1 [Guzik, Joyce Ann; Keady, J. J.; Kilcrease, D. P.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Guzik, JA (reprint author), Los Alamos Natl Lab, X-2-N2,MS T086, Los Alamos, NM 87545 USA. OI Kilcrease, David/0000-0002-2319-5934 NR 37 TC 2 Z9 2 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0707-7 J9 AIP CONF PROC PY 2009 VL 1170 BP 577 EP 581 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BPW04 UT WOS:000280126200128 ER PT J AU Chen, MJ Keller, A Lu, ZM AF Chen, Mingjie Keller, Arturo A. Lu, Zhiming TI Stochastic analysis of transient three-phase flow in heterogeneous porous media SO STOCHASTIC ENVIRONMENTAL RESEARCH AND RISK ASSESSMENT LA English DT Article ID PERTURBATION APPROACH; KARHUNEN-LOEVE; 2-PHASE FLOW AB In this manuscript, we extend the stochastic analysis of transient two-phase flow (Chen et al., Water Resour Res 42:W03425, 2006) to three-phase flow, i.e., water, air, and NAPL. We use the van Genuchten model and the Parker and Lenhard three-phase model to describe the relationships between phase saturation, phase relative permeability, and capillary pressure. The log-transformations of intrinsic permeability Y(x) = ln k(x), soil pore size distribution parameter beta (ow) (x) = ln alpha (ow) (x) between water and NAPL, and beta (ao) (x) = ln alpha (ao) (x) between air and NAPL, and van Genuchten fitting parameter are treated as stochastic variables that are normally distributed with a separable exponential covariance model. The Karhunen-Loeve expansion and perturbation method (KLME) is used to solve the resulting equations. We evaluate the stochastic model using two-dimensional examples of three-phase flow with NAPL leakage. We also conduct Monte Carlo (MC) simulations to verify the stochastic model. A comparison of results from MC and KLME indicates the validity of the proposed KLME application in three-phase flow. The computational efficiency of the KLME approach over MC methods is at least an order of magnitude for three-phase flow problems. This verified stochastic model is then used to investigate the sensitivity of fluid saturation variances to the input variances. C1 [Chen, Mingjie; Lu, Zhiming] Los Alamos Natl Lab, Hydrol & Geochem Grp, Los Alamos, NM USA. [Keller, Arturo A.] Univ Calif Santa Barbara, Bren Sch Environm Sci & Management, Santa Barbara, CA 93106 USA. RP Chen, MJ (reprint author), Los Alamos Natl Lab, Hydrol & Geochem Grp, EES 6, Los Alamos, NM USA. EM mchen@lanl.gov OI Lu, Zhiming/0000-0001-5800-3368 NR 15 TC 5 Z9 6 U1 1 U2 8 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1436-3240 J9 STOCH ENV RES RISK A JI Stoch. Environ. Res. Risk Assess. PD JAN PY 2009 VL 23 IS 1 BP 93 EP 109 DI 10.1007/s00477-007-0198-y PG 17 WC Engineering, Environmental; Engineering, Civil; Environmental Sciences; Statistics & Probability; Water Resources SC Engineering; Environmental Sciences & Ecology; Mathematics; Water Resources GA 371UR UT WOS:000260857400009 ER PT B AU Lerner, P Wu, CC AF Lerner, Peter Wu, Chunchi BE Gregoriou, GN TI Price Volatility in the Context of Market Microstructure SO STOCK MARKET VOLATILITY SE Chapman & Hall-CRC Finance Series LA English DT Article; Book Chapter ID SPREAD; ASK C1 [Lerner, Peter] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Lerner, Peter] Penn State Univ, University Pk, PA 16802 USA. [Wu, Chunchi] Syracuse Univ, Whitman Sch Management, PhD Program, Syracuse, NY 13244 USA. [Wu, Chunchi] Singapore Management Univ, Singapore, Singapore. RP Lerner, P (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 20 TC 0 Z9 0 U1 0 U2 0 PU CHAPMAN & HALL/CRC PRESS PI BOCA RATON PA 6000 BROKEN SOUND PKWY, NW, STE 300, BOCA RATON, FL 33487 USA BN 978-1-4200-9954-6 J9 CH CRC FINANC SER PY 2009 BP 51 EP 69 D2 10.1201/9781420099553 PG 19 WC Business, Finance SC Business & Economics GA BKA14 UT WOS:000267575100003 ER PT S AU Tamura, N Chen, K Kunz, M AF Tamura, N. Chen, K. Kunz, M. BE Ho, PS Ogawa, S Zscheck, E TI Synchrotron X-Ray Microdiffraction Studies of Electromigration in Interconnect lines at the Advanced Light Source SO STRESS-INDUCED PHENOMENA IN METALLIZATION SE AIP Conference Proceedings LA English DT Proceedings Paper CT 10th International Workshop on Stress-Induced Phenomena in Metallization CY NOV 05-07, 2008 CL Univ Texas, Austin, TX HO Univ Texas ID PLASTIC-DEFORMATION; METAL LINES; THIN-FILMS; DIFFRACTION; STRESS; TEXTURE; STRAIN; MICROBEAMS; MIRRORS AB Synchrotron polychromatic X-ray microdiffraction is a particularly suitable technique to study in situ the effect of electromigration in metal interconnects as add spatial resolution to grain orientation and strain sensitivity. This technique has been extensively used at the Advanced Light Source to monitor changes in aluminum and copper interconnect test structures while high-density current is passed into them during accelerated tests at elevated temperature. One of the principal findings is the observation of electromigration-induced plasticity in the metal lines that appear during the very early stages of electromigration. In some of the lines, high density of geometrically necessary dislocation are formed leading to additional diffusion paths causing an enhancement of electromigration effect at test temperature. C1 [Tamura, N.; Chen, K.; Kunz, M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA. RP Tamura, N (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, 1 Cyclotron Rd, Berkeley, CA 94720 USA. RI Kunz, Martin/K-4491-2012; Chen, Kai/O-5662-2014 OI Kunz, Martin/0000-0001-9769-9900; Chen, Kai/0000-0002-4917-4445 NR 25 TC 0 Z9 0 U1 0 U2 6 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0680-3 J9 AIP CONF PROC PY 2009 VL 1143 BP 47 EP 55 PG 9 WC Physics, Applied SC Physics GA BKF57 UT WOS:000267980400005 ER PT J AU Park, S Park, G Yun, CB Farrar, CR AF Park, Seunghee Park, Gyuhae Yun, Chung-Bang Farrar, Charles R. TI Sensor Self-diagnosis Using a Modified Impedance Model for Active Sensing-based Structural Health Monitoring SO STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL LA English DT Article DE electro mechanical impedance model; structural health monitoring; sensor diagnostics; bonding layer; admittance ID PIEZO-TRANSDUCERS; MATERIAL SYSTEMS; VALIDATION; ACTUATORS; ELEMENT; PATCHES AB The active sensing methods using piezoelectric materials have been extensively investigated for the efficient use in structural health monitoring (SHM) applications. Relying on high frequency structural excitations, the methods showed the extreme sensitivity to minor defects in a structure. Recently, a sensor self-diagnostic procedure that performs in situ monitoring of the operational status of piezoelectric (PZT) active sensors and actuators in SHM applications has been proposed. In this investigation, previously developed impedance models were revisited in order to investigate the effects of sensor and/or bonding defects on the admittance measurement. New parameters for sensor quality assessment of a PZT and coupling degradation effects between a PZT and bonding layer were incorporated into the traditional electromechanical impedance model for better estimation of the electromechanical impedance signatures and sensor diagnostics. The feasibility of the modified impedance model for sensor self-diagnosis using the admittance measurements was demonstrated by a series of parametric studies using a simple example of PZT-driven single degree of freedom spring-mass-damper system. This paper summarizes the description of the proposed modified electromechanical impedance model, parametric studies for impedance-based sensor diagnostics, and several issues that can be used as a guideline for future investigation. C1 [Park, Seunghee; Yun, Chung-Bang] Korea Adv Inst Sci & Technol, Dept Civil & Environm Engn, Taejon 305701, South Korea. [Park, Gyuhae; Farrar, Charles R.] Los Alamos Natl Lab, Engn Inst, Los Alamos, NM 87545 USA. RP Park, S (reprint author), Korea Adv Inst Sci & Technol, Dept Civil & Environm Engn, Taejon 305701, South Korea. EM shparkpc@kaist.ac.kr RI Yun, Chung Bang/C-1206-2011; Farrar, Charles/C-6954-2012; OI Farrar, Charles/0000-0001-6533-6996 FU Korea Science and Engineering Foundation; Ministry of Construction and Transportation, Korea FX This work was jointly supported by the Smart Infra-Structure Technology Center at KAIST sponsored by the Korea Science and Engineering Foundation, and the Infra-Structure Assessment Research Center sponsored by Ministry of Construction and Transportation, Korea. This financial support is greatly appreciated. NR 20 TC 31 Z9 32 U1 0 U2 2 PU SAGE PUBLICATIONS LTD PI LONDON PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND SN 1475-9217 J9 STRUCT HEALTH MONIT JI Struct. Health Monit. PD JAN PY 2009 VL 8 IS 1 BP 71 EP 82 DI 10.1177/1475921708094792 PG 12 WC Engineering, Multidisciplinary; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA 398XB UT WOS:000262763700006 ER PT J AU Maute, K Weickum, G Eldred, M AF Maute, Kurt Weickum, Gary Eldred, Mike TI A reduced-order stochastic finite element approach for design optimization under uncertainty SO STRUCTURAL SAFETY LA English DT Article DE Polynomial chaos expansion; Spectral stochastic finite element method; Reduced-order modeling; Sensitivity analysis; Shape optimization; Shell structures ID PARTIAL-DIFFERENTIAL-EQUATIONS; POLYNOMIAL CHAOS EXPANSIONS; MODEL-REDUCTION; BASIS APPROXIMATIONS; REANALYSIS APPROACH; MECHANICAL SYSTEMS; DYNAMICAL-SYSTEMS; ROBUST DESIGN; REPRESENTATIONS; DISCRETIZATION AB This paper presents a computational framework for structural design optimization under uncertainty. The stochastic static response of linear elastic structures is predicted by a spectral stochastic finite element method (SSFEM) based on a polynomial chaos expansion (PCE). Traditional SSFEM approaches lead to large-scale numerical problems and computational costs rendering these methods impractical for design optimization purposes. To mitigate the computational burden, a Galerkin-based multi-point reduced-order model (ROM) is integrated into SSFEM. The ROM basis is spanned by displacements and derivatives of displacements with respect to design and random variables evaluated at adaptively selected calibration points in the design space. The design sensitivity equations are derived and a formal analysis of the computational costs in terms of floating-point operations is presented. The efficiency of the ROM based approach versus traditional SSFEM is studied with the shape optimization of a shell structure. For this example, the results show that the proposed reduced-order modeling scheme can lower the total turnaround time by more than a factor of 30. (C) 2009 Elsevier Ltd. All rights reserved. C1 [Maute, Kurt; Weickum, Gary] Univ Colorado, Dept Aerosp Engn Sci, Ctr Aerosp Struct, Boulder, CO 80309 USA. [Eldred, Mike] Sandia Natl Labs, Optimizat & Uncertainty Estimat Dept, Albuquerque, NM 87185 USA. RP Maute, K (reprint author), Univ Colorado, Dept Aerosp Engn Sci, Ctr Aerosp Struct, Boulder, CO 80309 USA. EM maute@colorado.edu; weickum@colorado.edu; mseldre@sandia.gov FU National Science Foundation [DMI-0300539, DMI0348759]; Sandia Computer Science Research Institute (CSRI) between Sandia National Laboratories and the University of Colorado. FX The first and third authors acknowledge the support by the National Science Foundation under grants DMI-0300539 and DMI0348759. All authors thank the Sandia Computer Science Research Institute (CSRI) for support of this collaborative work between Sandia National Laboratories and the University of Colorado. The opinions and conclusions presented are those of the authors and do not necessarily reflect the views of the sponsoring organization. NR 51 TC 18 Z9 18 U1 2 U2 10 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-4730 J9 STRUCT SAF JI Struct. Saf. PY 2009 VL 31 IS 6 BP 450 EP 459 DI 10.1016/j.strusafe.2009.06.004 PG 10 WC Engineering, Civil SC Engineering GA 513RX UT WOS:000271342000002 ER PT J AU Klein, R Stone, J AF Klein, R. Stone, J. BE Chabrier, G TI Numerical methods for radiation magnetohydrodynamics in astrophysics SO STRUCTURE FORMATION IN ASTROPHYSICS LA English DT Article; Book Chapter ID ADAPTIVE MESH REFINEMENT; FLUX-LIMITED DIFFUSION; MULTIDIMENSIONAL IDEAL MAGNETOHYDRODYNAMICS; SELF-GRAVITATIONAL HYDRODYNAMICS; SMOOTHED PARTICLE HYDRODYNAMICS; PIECEWISE PARABOLIC METHOD; UNSPLIT GODUNOV METHOD; CONSTRAINED TRANSPORT; CONSERVATION-LAWS; HEAT-CONDUCTION AB We describe numerical methods for solving the equations of radiation magnetohydrodynamics (MHD) for astrophysical fluid flow. Such methods are essential for the investigation of the time-dependent and multidimensional dynamics of a variety of astrophysical systems, although our particular interest is motivated by problems in star formation. Over the past few years, the authors have been members of two parallel code development efforts, and this review reflects that organization. In particular, we discuss numerical methods for MHD as implemented in the Athena code, and numerical methods for radiation hydrodynamics as implemented in the Orion code. We discuss the challenges introduced by the use of adaptive mesh refinement (AMR) in both codes, as well as the most promising directions for future developments. C1 [Klein, R.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. [Klein, R.] Lawrence Livermore Natl Lab, Livermore, CA USA. [Stone, J.] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA. RP Klein, R (reprint author), Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA. NR 70 TC 1 Z9 1 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI CAMBRIDGE PA THE PITT BUILDING, TRUMPINGTON ST, CAMBRIDGE CB2 1RP, CAMBS, ENGLAND BN 978-0-521-88779-3 PY 2009 BP 37 EP 83 DI 10.1017/CBO9780511575198.004 D2 10.1017/CBO9780511575198 PG 47 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BCK40 UT WOS:000310448400004 ER PT J AU Bromm, V Ferrara, A Heger, A AF Bromm, V. Ferrara, A. Heger, A. BE Chabrier, G TI First stars: formation, evolution and feedback effects SO STRUCTURE FORMATION IN ASTROPHYSICS LA English DT Article; Book Chapter ID INITIAL MASS FUNCTION; POPULATION-III STARS; PAIR-INSTABILITY SUPERNOVAE; COLD-DARK-MATTER; POOR HALO STARS; PRIMORDIAL GAS; LOW-METALLICITY; RADIATIVE FEEDBACK; EARLY UNIVERSE; REIONIZATION EPOCH AB The formation of the first stars at redshifts z similar to 20-30 marked the transition from the simple initial state of the universe to one of ever increasing complexity. We here review recent progress in understanding their formation process with numerical simulations. We discuss the physics behind the prediction of a top-heavy primordial initial mass function (IMF) and focus on protostellar accretion as the key unsolved problem. We continue by describing their evolution and their death as energetic supernovae (SNe) or massive black holes. Finally, we address feedback processes from the first stars that are now realized to hold the key to our understanding of structure formation in the early universe. We discuss three broad feedback classes (radiative, chemical and mechanical) and explore the enrichment history of the intergalactic medium (IGM). C1 [Bromm, V.] Univ Texas Austin, Dept Astron, Austin, TX 78712 USA. [Ferrara, A.] SISSA Int Sch Adv Studies, Trieste, Italy. [Heger, A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Heger, A.] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA USA. [Heger, A.] Univ Minnesota, Minneapolis, MN 55455 USA. RP Bromm, V (reprint author), Univ Texas Austin, Dept Astron, Austin, TX 78712 USA. NR 101 TC 0 Z9 0 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI CAMBRIDGE PA THE PITT BUILDING, TRUMPINGTON ST, CAMBRIDGE CB2 1RP, CAMBS, ENGLAND BN 978-0-521-88779-3 PY 2009 BP 180 EP 202 DI 10.1017/CBO9780511575198.009 D2 10.1017/CBO9780511575198 PG 23 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BCK40 UT WOS:000310448400009 ER PT S AU Kent, MS Murton, JK Satija, S Kuzmenko, I Simmons, BA AF Kent, M. S. Murton, J. K. Satija, S. Kuzmenko, I. Simmons, B. A. BE Kisailus, D Estroff, L Gupta, HS landis, WJ Zavattieri, PD TI Nanosilica Formation at Lipid Membranes Induced by Silaffin Peptides SO STRUCTURE-PROPERTY RELATIONSHIPS IN BIOMINERALIZED AND BIOMIMETIC COMPOSITES SE Materials Research Society Symposium Proceedings LA English DT Proceedings Paper CT Symposium on Structure-Property Relationships in Biomineralized and Biomimetic Composites held at the 2009 MRS Spring Meeting CY APR 14-17, 2009 CL San Francisco, CA SP Mat Res Soc ID DIATOM; NANOSTRUCTURE; MORPHOGENESIS; BIOSILICA; CARBON AB Diatoms are unicellular eukaryotic algae found in fresh and marine water. Each cell is surrounded by an outer shell called a frustule that is composed of highly structured amorphous silica. Diatoms are able to transform silicic acid into these sturdy intricate structures at ambient temperatures and pressures, whereas the chemical synthesis of silica-based materials typically requires extremes of temperature and pH. Cationic polypeptides, termed silica affinity proteins (or silaffins) recently identified from dissolved frustules of specific species of diatoms are clearly involved and have been shown to initiate the formation of silica in solution. The relationship between the local environment of catalytic sites on these peptides, which can be influenced by the amino acid sequence and the extent of aggregation, and the observed structure of the silica is not understood. Moreover, the activity of these peptides in promoting silicification at lipid membranes has not yet been clarified. In this work we developed a model system to address some of these questions. We studied peptide adsorption to Langmuir monolayers and subsequent silicification using X-ray reflectivity and grazing incidence X-ray diffraction. The results demonstrate the lipid affinity of the parent sequences of several silaffin peptides. Further, the results show that the membrane-bound peptides promote the formation of interfacial nanoscale layers of amorphous silica at the lipid-water interface that vary in structure according to the peptide sequence. C1 [Kent, M. S.; Murton, J. K.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Kent, MS (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 17 TC 1 Z9 1 U1 0 U2 2 PU MATERIALS RESEARCH SOCIETY PI WARRENDALE PA 506 KEYSTONE DRIVE, WARRENDALE, PA 15088-7563 USA SN 0272-9172 BN 978-1-60511-160-5 J9 MATER RES SOC SYMP P PY 2009 VL 1187 BP 95 EP 100 PG 6 WC Materials Science, Multidisciplinary; Materials Science, Biomaterials SC Materials Science GA BNA18 UT WOS:000274017800013 ER PT S AU Chisolm, ED AF Chisolm, Eric D. BE Walser, RM Valanju, AP Valanju, PM TI Decohering histories and open quantum systems SO SUDARSHAN: SEVEN SCIENCE QUESTS SE Journal of Physics Conference Series LA English DT Proceedings Paper CT Conference on Sudarshan: 7 Science Quests CY NOV 06-07, 2006 CL Univ Texas, Austin, TX SP Univ Texas, Phys Dept, Univ Texas, Ctr Electromagnet Mat & Devices, MetaMaterials LLC HO Univ Texas ID CONSISTENT HISTORIES; LOGICAL REFORMULATION; DISSIPATIVE SYSTEM; MECHANICS AB I briefly review the "decohering histories" or "consistent histories" formulation of quantum theory, due to Griffiths, Omnes, and Gell-Mann and Hartle (and the subject of my graduate work with George Sudarshan). I also sift through the many meanings that have been attached to decohering histories, with an emphasis on the most basic one: Decoherence of appropriate histories is needed to establish that quantum mechanics has the correct classical limit. Then I will describe efforts to find physical mechanisms that do this. Since most work has focused on density matrix versions of decoherence, I'll consider the relation between the two formulations, which historically has not been straightforward. Finally, I'll suggest a line of research that would use recent results by Sudarshan to illuminate this aspect of the classical limit of quantum theory. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Chisolm, ED (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. EM echisolm@lanl.gov NR 36 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2009 VL 196 AR 012025 DI 10.1088/1742-6596/196/1/012025 PG 9 WC Physics, Multidisciplinary SC Physics GA BTQ60 UT WOS:000287793000037 ER PT J AU Aytug, T Paranthaman, M Heatherly, L Zuev, Y Zhang, Y Kim, K Goyal, A Maroni, VA Chen, Y Selvamanickam, V AF Aytug, T. Paranthaman, M. Heatherly, L. Zuev, Y. Zhang, Y. Kim, K. Goyal, A. Maroni, V. A. Chen, Y. Selvamanickam, V. TI Deposition studies and coordinated characterization of MOCVD YBCO films on IBAD-MgO templates SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY LA English DT Article ID COATED CONDUCTORS; THIN-FILMS; SUPERPOWER AB A recently installed research-scale metal-organic chemical vapor deposition (MOCVD) system at Oak Ridge National Laboratory, provided by SuperPower, Inc., has been used to investigate processing variables for MOCVD YBCO precursors and trends in the resulting properties. Systematic studies of YBCO film growth on LaMnO(3)/IBAD-MgO templates were carried out by optimizing deposition temperature and oxygen flow rate. Microstructural and superconducting properties of the YBCO films were analyzed by x-ray diffraction, scanning electron microscopy and transport measurements. The identification of intermediate phases formed during the YBCO precursor transformation was investigated by coordinated reel-to-reel Raman microprobe analysis. With this combination of various characterization techniques, an improved understanding of the growth characteristics of MOCVD YBCO films was established. Finally, critical current densities greater than 2 MA cm(-2) for film thicknesses of 0.8 mu m were demonstrated. C1 [Aytug, T.; Paranthaman, M.] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. [Heatherly, L.; Zuev, Y.; Zhang, Y.; Kim, K.; Goyal, A.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA. [Maroni, V. A.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA. [Chen, Y.; Selvamanickam, V.] SuperPower Inc, Schenectady, NY 12304 USA. RP Aytug, T (reprint author), Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. EM aytugt@ornl.gov RI Paranthaman, Mariappan/N-3866-2015 OI Paranthaman, Mariappan/0000-0003-3009-8531 FU US Department of Energy; Office of Electricity Delivery and Energy Reliability; Oak Ridge National Laboratory [DE-AC05-00OR22725]; Argonne National Laboratory [DE-AC02-06CH11357] FX This work was done as part of the ORNL-SuperPower and the ANL-SuperPower CRADA and supported by the US Department of Energy, Office of Electricity Delivery and Energy Reliability. The research was performed at the Oak Ridge National Laboratory, managed by U.T.-Battelle, LLC for the USDOE under contract no. DE-AC05-00OR22725, and at Argonne National Laboratory under contract no. DE-AC02-06CH11357 between UChicago Argonne, LLC and the USDOE. NR 9 TC 9 Z9 9 U1 0 U2 3 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 JAN PY 2009 VL 22 IS 1 AR 015008 DI 10.1088/0953-2048/22/1/015008 PG 5 WC Physics, Applied; Physics, Condensed Matter SC Physics GA 384RG UT WOS:000261761300019 ER PT J AU Dugdale, SB Utfeld, C Wilkinson, I Laverock, J Major, Z Alam, MA Canfield, PC AF Dugdale, S. B. Utfeld, C. Wilkinson, I. Laverock, J. Major, Zs Alam, M. A. Canfield, P. C. TI Fermi surfaces of rare-earth nickel borocarbides SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY LA English DT Article ID SUPERCONDUCTING LUNI2B2C; POSITRON-ANNIHILATION; ELECTRON; RECONSTRUCTION; MAGNETISM; YNI2B2C; DENSITY; STATE; HEAT AB A full three-dimensional study of the Fermi surface of LuNi(2)B(2)C is presented, using positron annihilation. The previously identified nesting feature, part of a complex multiply connected Fermi surface sheet, is clearly revealed and observed to extend across approximately 20% of the Brillouin zone. A cuboidal Fermi surface sheet is also found, in agreement with de Haas-van Alphen observations. The Fermi surface topology of the rare-earth nickel borocarbides is shown to vary little for rare-earth elements such as Er, Tm and Yb, suggesting that this topology is broadly common. C1 [Dugdale, S. B.; Utfeld, C.; Wilkinson, I.; Laverock, J.; Major, Zs; Alam, M. A.] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England. [Major, Zs] Max Planck Inst Quantum Opt, D-85748 Garching, Germany. [Canfield, P. C.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. [Canfield, P. C.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. RP Dugdale, SB (reprint author), Univ Bristol, HH Wills Phys Lab, Tyndall Ave, Bristol BS8 1TL, Avon, England. EM s.b.dugdale@bristol.ac.uk RI Dugdale, Stephen/F-4066-2011; Laverock, Jude/G-4537-2010; Canfield, Paul/H-2698-2014 OI Dugdale, Stephen/0000-0002-2738-2235; Laverock, Jude/0000-0003-3653-8171; FU EPSRC; Royal Society; Department of Energy, Basic Energy Sciences [DE-AC02-07CH11358] FX It is our pleasure to thank Ian Fisher (Stanford) for stimulating discussions and growing the single crystals. Work in Bristol was supported by the EPSRC and the Royal Society. Work at the Ames Laboratory was supported by the Department of Energy, Basic Energy Sciences under Contract No. DE-AC02-07CH11358. NR 38 TC 9 Z9 9 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 JAN PY 2009 VL 22 IS 1 AR 014002 DI 10.1088/0953-2048/22/1/014002 PG 5 WC Physics, Applied; Physics, Condensed Matter SC Physics GA 384RG UT WOS:000261761300004 ER PT J AU Gutierrez, J Maiorov, B Puig, T Gazquez, J Roma, N Wang, H Sandiumenge, F Obradors, X AF Gutierrez, J. Maiorov, B. Puig, T. Gazquez, J. Roma, N. Wang, H. Sandiumenge, F. Obradors, X. TI The role of stacking faults in the critical current density of MOD films through a thickness dependence study SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY LA English DT Article ID YBA2CU3O7-X COATED CONDUCTORS; PULSED-LASER DEPOSITION; THIN-FILMS; AB-PLANE; TEMPERATURE; PROGRESS; SUPERCONDUCTORS; MECHANISMS; CROSSOVER; TEXTURE AB A study is presented on the evolution through thickness of the angular and magnetic field ( H) dependence of the critical current density (J(c)) for YBa(2)Cu(3)O(7) films grown by the trifluoroacetate route. A clear relation between Jc at self-field (sf) and the thickness-dependent distribution of pinning centers parallel to the ab-planes is found and confirmed by microstructural analysis. Results indicate that stacking faults and their associated partial dislocations are relevant pinning centers for determining the thickness dependence of J(c)(H parallel to ab) and J(c)(sf), respectively, supporting the hypothesis that the thickness dependence of J(c) is related to defect density. C1 [Gutierrez, J.; Puig, T.; Gazquez, J.; Roma, N.; Sandiumenge, F.; Obradors, X.] CSIC, Inst Ciencia Mat Barcelona, Bellaterra 08193, Spain. [Maiorov, B.; Wang, H.] Los Alamos Natl Lab, Supercond Technol Ctr, Los Alamos, NM 87545 USA. RP Gutierrez, J (reprint author), CSIC, Inst Ciencia Mat Barcelona, Bellaterra 08193, Spain. RI Sandiumenge, Felip/C-2743-2012; Gazquez, Jaume/C-5334-2012; Obradors, Xavier/A-8146-2012; Puig, Teresa/O-1077-2013; Wang, Haiyan/P-3550-2014; Gutierrez, Joffre/D-3546-2015; OI Sandiumenge, Felip/0000-0003-1336-1529; Gazquez, Jaume/0000-0002-2561-328X; Puig, Teresa/0000-0002-1873-0488; Wang, Haiyan/0000-0002-7397-1209; Gutierrez, Joffre/0000-0002-8897-0276; Maiorov, Boris/0000-0003-1885-0436 FU Ministerio de Educacion y Ciencia (FPU); Office of Electricity Delivery and Energy Reliability; US Department of Energy; CICYT and FEDER (EU) [MAT2005-02047]; Generalitat de Catalunya [2005SGR-00029]; CerMAE; EU HIPERCHEM NMP [fmath-CT2005-516858] FX The authors would like to thank L Civale and M Feldmann for careful reading of the manuscript and valuable discussions. This work was partially performed during J Gutierrez's stay at Los Alamos, as part of the PhD program funded by Ministerio de Educacion y Ciencia (FPU). The work at Los Alamos was supported by the Office of Electricity Delivery and Energy Reliability, US Department of Energy, and at ICMAB by CICYT and FEDER (EU) (MAT2005-02047), Generalitat de Catalunya (2005SGR-00029 and CerMAE and EU HIPERCHEM NMP fmath-CT2005-516858). NR 44 TC 13 Z9 14 U1 0 U2 7 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0953-2048 J9 SUPERCOND SCI TECH JI Supercond. Sci. Technol. PD JAN PY 2009 VL 22 IS 1 AR 015022 DI 10.1088/0953-2048/22/1/015022 PG 4 WC Physics, Applied; Physics, Condensed Matter SC Physics GA 384RG UT WOS:000261761300033 ER PT J AU Kursumovic, A Maiorov, B Durrell, JH Wang, H Zhou, H Stan, L Harrington, S Wimbush, S Holesinger, TG MacManus-Driscoll, JL AF Kursumovic, A. Maiorov, B. Durrell, J. H. Wang, H. Zhou, H. Stan, L. Harrington, S. Wimbush, S. Holesinger, T. G. MacManus-Driscoll, J. L. TI High I-c, YBa2Cu3O7-x films grown at very high rates by liquid assisted growth incorporating lightly Au-doped SrTiO3 buffers SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY LA English DT Article ID COATED CONDUCTORS; PHASE EPITAXY; GOLD NANOPARTICLES; THIN-FILM; HTS WIRE; PROGRESS; SUPERCONDUCTIVITY; DEPOSITION AB YBa2Cu3O7-x (YBCO) thick films were grown by hybrid liquid phase epitaxy (HLPE) on (001) SrTiO3 (STO) substrates. In the presence of a 100 nm thick, 5 mol% Au-doped STO buffer, self-field critical current densities, J(c)(sf), at 77 K of similar to 2.4 MA cm(-2) and critical currents, I-c(sf), up to 700 A (cm-width)(-1) were achieved. The J(c) value is virtually independent of thickness and the growth rates are very high (similar to 1 mu m min(-1)). From transmission electron microscopy (TEM), Y2O3 nanocloud extended defects (similar to 100 nm in size) were identified as the pinning defects in the films. Enhanced random pinning was induced by the presence of Au in the buffer. C1 [Kursumovic, A.; Durrell, J. H.; Harrington, S.; Wimbush, S.; MacManus-Driscoll, J. L.] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England. [Maiorov, B.; Zhou, H.; Stan, L.; Holesinger, T. G.] Los Alamos Natl Lab, Superconduct Technol Ctr, Los Alamos, NM 87545 USA. [Wang, H.] Texas A&M Univ, Dept Elect & Comp Engn, College Stn, TX 77843 USA. RP Kursumovic, A (reprint author), Univ Cambridge, Dept Mat Sci & Met, Pembroke St, Cambridge CB2 3QZ, England. EM ak237@cam.ac.uk RI Harrington, Sophie/A-1349-2010; Wimbush, Stuart/F-3736-2011; Wang, Haiyan/P-3550-2014; Durrell, John/A-4052-2008; OI Wimbush, Stuart/0000-0003-1636-643X; Wang, Haiyan/0000-0002-7397-1209; Durrell, John/0000-0003-0712-3102; Maiorov, Boris/0000-0003-1885-0436 FU NMP4-CT2005-516858 (HIPERCHEM); Marie Curie Excellence [MC-EXT 014156]; US Department of Energy; Office of Electricity Delivery and Energy Reliability FX The authors acknowledge support from NMP4-CT2005-516858 (HIPERCHEM) and the Marie Curie Excellence Grant MC-EXT 014156 NanoFen. This work was supported by the US Department of Energy, Office of Electricity Delivery and Energy Reliability. NR 28 TC 6 Z9 6 U1 0 U2 19 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0953-2048 J9 SUPERCOND SCI TECH JI Supercond. Sci. Technol. PD JAN PY 2009 VL 22 IS 1 AR 015009 DI 10.1088/0953-2048/22/1/015009 PG 5 WC Physics, Applied; Physics, Condensed Matter SC Physics GA 384RG UT WOS:000261761300020 ER PT J AU Samuely, P Szabo, P Pribulova, Z Tillman, ME Bud'ko, SL Canfield, PC AF Samuely, P. Szabo, P. Pribulova, Z. Tillman, M. E. Bud'ko, S. L. Canfield, P. C. TI Possible two-gap superconductivity in NdFeAsO0.9F0.1 probed by point-contact Andreev-reflection spectroscopy SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY LA English DT Article ID LAYERED SUPERCONDUCTOR; GAPS AB Systematic studies of the NdFeAsOF superconducting energy gap using point-contact Andreev-reflection (PCAR) spectroscopy are presented. At low temperatures the PCAR conductance spectra show a pair of gap-like peaks at about +/-(4-7) mV and in most cases also a pair of humps at around +/- 10 mV. Fits to the s-wave two-gap model of the PCAR conductance allowed to determine two superconducting energy gaps in the system. However, the energy-gap features disappear at T* = 15-20 K, much below the particular T-c of the junction under study. At T* a zero-bias conductance (ZBC) peak emerges, which at higher temperatures usually overwhelms the spectrum with an intensity significantly higher than the conductance signal at lower temperatures. Possible causes of this unexpected temperature effect are discussed. In some cases the conductance spectra show just a reduced conductance around the zero-bias voltage, the effect persisting well above the bulk transition temperature. This indicates the presence of a pseudogap in the system. C1 [Samuely, P.; Szabo, P.; Pribulova, Z.] IEP Slovak Acad Sci, Ctr Low Temp Phys, SK-04001 Kosice, Slovakia. [Tillman, M. E.; Bud'ko, S. L.; Canfield, P. C.] Ames Lab, Ames, IA 50011 USA. [Tillman, M. E.; Bud'ko, S. L.; Canfield, P. C.] Iowa State Univ, Ames, IA 50011 USA. RP Samuely, P (reprint author), IEP Slovak Acad Sci, Ctr Low Temp Phys, Watsonova 47, SK-04001 Kosice, Slovakia. RI Canfield, Paul/H-2698-2014 FU Slovak Research and Development Agency [APVV-0346-07, VVCE-0058-07, LPP-0101-06]; EC [MTKD-CT-2005-030002]; US Steel Kosice; Department of Energy-Basic Energy Sciences [DE-AC02-07CH11358] FX This work was supported by the Slovak Research and Development Agency under contracts APVV-0346-07, VVCE-0058-07 and LPP-0101-06, by the EC Framework Programme MTKD-CT-2005-030002. The Centre of Low Temperature Physics is operated as the Centre of Excellence of the Slovak Academy of Sciences. The liquid nitrogen for the experiment was sponsored by the US Steel Kosice, s.r.o. Work at the Ames Laboratory was supported by the Department of Energy-Basic Energy Sciences under contract no. DE-AC02-07CH11358. NR 23 TC 52 Z9 52 U1 0 U2 8 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0953-2048 J9 SUPERCOND SCI TECH JI Supercond. Sci. Technol. PD JAN PY 2009 VL 22 IS 1 AR 014003 DI 10.1088/0953-2048/22/1/014003 PG 6 WC Physics, Applied; Physics, Condensed Matter SC Physics GA 384RG UT WOS:000261761300005 ER PT J AU Levy, E Kolesnikov, AI Li, JC Mastai, Y AF Levy, Esthy Kolesnikov, Alexander I. Li, Jichen Mastai, Yitzhak TI Structure of water in mesoporous organosilica by calorimetry and inelastic neutron scattering SO SURFACE SCIENCE LA English DT Article DE Water; Ice; Mesoporous organosilica; Inelastic neutron scattering; Differential scanning calorimetry (DSC); Surface structure; Porous solids ID DIFFERENTIAL SCANNING CALORIMETRY; PORE-SIZE DETERMINATION; POROUS SILICA; PHASE-TRANSITIONS; SUPERCOOLED WATER; FREEZING BEHAVIOR; MELTING BEHAVIOR; NMR RELAXATION; CONFINED SPACE; CHANNEL WALLS AB In this paper, we describe the preparation of mesoporous organosilica samples with hydrophilic or hydrophobic organic functionality inside the silica channel. We synthesized mesoporous organosilica of identical pore sizes based on two different organic surface functionality namely hydrophobic (based on octyltriethoxysilane OTES) and hydrophilic (3-aminopropyltriethoxysilane ATES) and MCM-41 was used as a reference system. The Structure Of water/ice ill those Porous Silica samples have been investigated over a range temperatures by differential scanning calorimetry (DSC) and inelastic neutron scattering (INS). INS study revealed that water confined in hydrophobic mesoporous organosilica Shows Vibrational behavior strongly different than bulk water. It consists of two states: water with strong and weak hydrogen bonds (With ratio 1:2.65, respectively), compared to ice-Ih. The corresponding O-O distances in these water states are 2.67 and 2.87 angstrom, which strongly differ compared to ice-Ih (2.76 angstrom). INS spectra for water in hydrophilic mesoporous organosilica ATES show behavior similar to bulk water, but with greater degree of disorder. (C) 2008 Elsevier B.V. All rights reserved. C1 [Levy, Esthy; Mastai, Yitzhak] Bar Ilan Univ, Dept Chem, Inst Nanotechnol, IL-52900 Ramat Gan, Israel. [Kolesnikov, Alexander I.] Oak Ridge Natl Lab, Spallat Neutron Source, Oak Ridge, TN 37831 USA. [Li, Jichen] Univ Manchester, Dept Phys & Astron, Manchester M60 1QD, Lancs, England. RP Mastai, Y (reprint author), Bar Ilan Univ, Dept Chem, Inst Nanotechnol, IL-52900 Ramat Gan, Israel. EM mastai@mail.biu.ac.il RI Kolesnikov, Alexander/I-9015-2012 OI Kolesnikov, Alexander/0000-0003-1940-4649 FU Israel Science Foundation (ISF) [289]; Office of Basic Energy Sciences, Division of Materials Sciences, US Department of Energy [DE-AC02-06CH11357]; US Department of Energy [DE-AC05-00OR22725] FX Esthy Levy would like to acknowledge the Bar- Ilan President's Ph.D. scholarship foundation. This research was supported by the Israel Science Foundation (ISF) Grant No. 289. The experiments at Argonne National Laboratory were supported by the Office of Basic Energy Sciences, Division of Materials Sciences, US Department of Energy, under Contract No. DE-AC02-06CH11357, and work at ORNL/SNS was managed UT-Battelle, LLC, for the US Department of Energy under Contract DE-AC05-00OR22725. NR 67 TC 8 Z9 8 U1 0 U2 10 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 EI 1879-2758 J9 SURF SCI JI Surf. Sci. PD JAN 1 PY 2009 VL 603 IS 1 BP 71 EP 77 DI 10.1016/j.susc.2008.10.035 PG 7 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA 399VS UT WOS:000262828000014 ER PT S AU Alwall, J Freitas, A Mattelaer, O AF Alwall, Johan Freitas, Ayres Mattelaer, Olivier BE Nath, P Alverson, G Nelson, B TI Measuring Sparticles with the Matrix Element SO SUSY09: THE 17TH INTERNATIONAL CONFERENCE ON SUPERSYMMETRY AND THE UNIFICATION OF FUNDAMENTAL INTERACTIONS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Supersymmetry and the Unification of Fundamental Interactions CY JUN 05-10, 2009 CL Northeastern Univ, Boston, MA SP US DOE, US Natl Sci Fdn HO Northeastern Univ DE Matrix Element Method; SUSY; Mass; ISR AB We apply the Matrix Element Method (MEM) to mass determination of squark pair production with direct decay to quarks and LSP at the LHC, showing that simultaneous mass determination of squarks and LSP is possible We furthermore propose methods for inclusion of QCD radiation effects in the MEM C1 [Alwall, Johan] Stanford Univ, SLAC, Stanford, CA 94309 USA. RP Alwall, J (reprint author), Stanford Univ, SLAC, Stanford, CA 94309 USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0737-4 J9 AIP CONF PROC PY 2009 VL 1200 BP 442 EP 445 PG 4 WC Physics, Applied SC Physics GA BQK02 UT WOS:000281197200070 ER PT S AU Graesser, ML Kitano, R Kurachi, M AF Graesser, Michael L. Kitano, Ryuichiro Kurachi, Masafumi BE Nath, P Alverson, G Nelson, B TI Higgsinoless Supersymmetry and Hidden Gravity SO SUSY09: THE 17TH INTERNATIONAL CONFERENCE ON SUPERSYMMETRY AND THE UNIFICATION OF FUNDAMENTAL INTERACTIONS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Supersymmetry and the Unification of Fundamental Interactions CY JUN 05-10, 2009 CL Northeastern Univ, Boston, MA SP US DOE, US Natl Sci Fdn HO Northeastern Univ DE Supersymmetry; Nonlinear realizaiton; Massive graviton ID PHENOMENOLOGICAL LAGRANGIANS; LOCAL SYMMETRIES; MESON AB We present the construction of a low energy effective theory for the TeV-scale supersymmetry breaking scenario, in which there is no Higgsino in the spectrum as a result of minimal construction which respects the symmetry breaking structure Then we propose a new spin-2 resonance at a TeV scale, which can be introduced in a manifestly supersymmetric way by using an analogy of Hidden Local Symmetry Possible signatures at the LHC experiments are discussed This talk is based on the work done in Ref [1] C1 [Graesser, Michael L.; Kurachi, Masafumi] Los Alamos Natl Lab, Theoret Div T2, Los Alamos, NM 87545 USA. [Kitano, Ryuichiro] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan. RP Graesser, ML (reprint author), Los Alamos Natl Lab, Theoret Div T2, Los Alamos, NM 87545 USA. FU U.S. Department of Energy at Los Alamos National Laboratory [DE-AC52-06NA25396]; Japan Ministry of Education, Culture, Sports, Science and Technology [18071001] FX The work of M.G. and M.K. is supported by the U.S. Department of Energy at Los Alamos National Laboratory under Contract No. DE-AC52-06NA25396. The work of R.K. is supported in part by the Grant-in-Aid for Scientific Research (No. 18071001) from the Japan Ministry of Education, Culture, Sports, Science and Technology. NR 11 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0737-4 J9 AIP CONF PROC PY 2009 VL 1200 BP 560 EP + PG 2 WC Physics, Applied SC Physics GA BQK02 UT WOS:000281197200097 ER PT S AU Davoudiasl, H AF Davoudiasl, Hooman BE Nath, P Alverson, G Nelson, B TI Signals of Warped Top-Condensation in B-Decays SO SUSY09: THE 17TH INTERNATIONAL CONFERENCE ON SUPERSYMMETRY AND THE UNIFICATION OF FUNDAMENTAL INTERACTIONS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Supersymmetry and the Unification of Fundamental Interactions CY JUN 05-10, 2009 CL Northeastern Univ, Boston, MA SP US DOE, US Natl Sci Fdn HO Northeastern Univ DE Warped top-condensation model; light radion; B-decays ID B->SGG AB A recently proposed warped top-condensation model generally predicts a light radion phi, with a mass of a few GeV or less, whose interactions are suppressed by a scale of order 100 TeV In this talk, we present existing constraints and potential signals from the process b -> s phi, in the context of such a model Astrophysical bounds, applicable to very light radions, are also briefly discussed C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Davoudiasl, H (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. NR 7 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0737-4 J9 AIP CONF PROC PY 2009 VL 1200 BP 631 EP 634 PG 4 WC Physics, Applied SC Physics GA BQK02 UT WOS:000281197200114 ER PT S AU Snyder, SS AF Snyder, Scott S. CA D0 Collaboration BE Nath, P Alverson, G Nelson, B TI Measurements of the Top Quark Mass at D0 SO SUSY09: THE 17TH INTERNATIONAL CONFERENCE ON SUPERSYMMETRY AND THE UNIFICATION OF FUNDAMENTAL INTERACTIONS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Supersymmetry and the Unification of Fundamental Interactions CY JUN 05-10, 2009 CL Northeastern Univ, Boston, MA SP US DOE, US Natl Sci Fdn HO Northeastern Univ DE top quark mass; antitop quark mass; CPT tests AB We present measurements of the top quark mass based on 3 6 fb(-1) of data collected by the D0 experiment during Run II of the Fermilab Tevatron collider. We present results in the dilepton and lepton+jets final states. We also present the measurement of the mass difference between t and (t) over bar quarks observed in lepton+jets final states of t (t) over bar events in 1 fb(-1) of data. C1 [Snyder, Scott S.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Snyder, SS (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 16 TC 0 Z9 0 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0737-4 J9 AIP CONF PROC PY 2009 VL 1200 BP 674 EP 677 PG 4 WC Physics, Applied SC Physics GA BQK02 UT WOS:000281197200124 ER PT S AU Culbertson, R AF Culbertson, Ray CA CDF Collaboration BE Nath, P Alverson, G Nelson, B TI Rare and Exotic Processes at CDF SO SUSY09: THE 17TH INTERNATIONAL CONFERENCE ON SUPERSYMMETRY AND THE UNIFICATION OF FUNDAMENTAL INTERACTIONS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Supersymmetry and the Unification of Fundamental Interactions CY JUN 05-10, 2009 CL Northeastern Univ, Boston, MA SP US DOE, US Natl Sci Fdn HO Northeastern Univ DE CDF; Tevatron; photon; diphoton; search; Fermiophobic Higgs AB We report recent results in CDF searches for rare and exotic processes In a signature-based search, we examine the diphoton dataset for additional energetic objects In a second signature-based search, we search for anomalous production of a photon, a b-tagged jet, and missing E(T) Finally, we search for a Fermiophobic Higgs in the two-photon decay mode, and conclude this Higgs must have mass greater than 106 GeV/c(2), at 95% confidence level C1 [Culbertson, Ray; CDF Collaboration] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Culbertson, R (reprint author), Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. NR 4 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0737-4 J9 AIP CONF PROC PY 2009 VL 1200 BP 726 EP 729 PG 4 WC Physics, Applied SC Physics GA BQK02 UT WOS:000281197200136 ER PT S AU Gopalakrishna, S AF Gopalakrishna, Shrihari BE Nath, P Alverson, G Nelson, B TI Hidden Sector Dark Matter and LHC Signatures SO SUSY09: THE 17TH INTERNATIONAL CONFERENCE ON SUPERSYMMETRY AND THE UNIFICATION OF FUNDAMENTAL INTERACTIONS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Supersymmetry and the Unification of Fundamental Interactions CY JUN 05-10, 2009 CL Northeastern Univ, Boston, MA SP US DOE, US Natl Sci Fdn HO Northeastern Univ DE Hidden sector gauge symmetry; Higgs boson; LHC phenomenology AB We discuss the implications of a gauged Abelian hidden-sector communicating with the Standard Model (SM) fields via kinetic mixing with the SM hypercharge gauge field, or via the Higgs doublet quartic interaction We discuss signatures of the hidden-sector gauge boson at the LHC in the four-lepton channel We show that a hidden-sector fermion can be a natural dark-matter candidate with the correct relic-density, discuss direct-detection prospects, and show how Higgs signatures may be altered at the LHC. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11793 USA. RP Gopalakrishna, S (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11793 USA. NR 17 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0737-4 J9 AIP CONF PROC PY 2009 VL 1200 BP 778 EP 781 PG 4 WC Physics, Applied SC Physics GA BQK02 UT WOS:000281197200149 ER PT S AU Fiorucci, S Akerib, DS Bedikian, S Bernstein, A Bolozdynya, A Bradley, A Carr, D Chapman, J Clark, K Classen, T Curioni, A Dahl, E Dazeley, S de Viveiros, L Druszkiewicz, E Gaitskell, R Hall, C Faham, CH Holbrook, B Kastens, L Kazkaz, K Lander, R Lesko, K Malling, D Mannino, R McKinsey, D Mei, D Mock, J Nikkel, J Phelps, P Schroeder, U Shutt, T Skulski, W Sorensen, P Spaans, J Stiegler, T Svoboda, R Sweany, M Thomson, J Toke, J Tripathi, M Walsh, N Webb, R White, J Wolfs, F Woods, M Zhang, C AF Fiorucci, S. Akerib, D. S. Bedikian, S. Bernstein, A. Bolozdynya, A. Bradley, A. Carr, D. Chapman, J. Clark, K. Classen, T. Curioni, A. Dahl, E. Dazeley, S. de Viveiros, L. Druszkiewicz, E. Gaitskell, R. Hall, C. Faham, C. Hernandez Holbrook, B. Kastens, L. Kazkaz, K. Lander, R. Lesko, K. Malling, D. Mannino, R. McKinsey, D. Mei, D. Mock, J. Nikkel, J. Phelps, P. Schroeder, U. Shutt, T. Skulski, W. Sorensen, P. Spaans, J. Stiegler, T. Svoboda, R. Sweany, M. Thomson, J. Toke, J. Tripathi, M. Walsh, N. Webb, R. White, J. Wolfs, F. Woods, M. Zhang, C. BE Nath, P Alverson, G Nelson, B TI Status of the LUX Dark Matter Search SO SUSY09: THE 17TH INTERNATIONAL CONFERENCE ON SUPERSYMMETRY AND THE UNIFICATION OF FUNDAMENTAL INTERACTIONS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Supersymmetry and the Unification of Fundamental Interactions CY JUN 05-10, 2009 CL Northeastern Univ, Boston, MA SP US DOE, US Natl Sci Fdn HO Northeastern Univ DE Dark Matter; LUX AB The Large Underground Xenon (LUX) dark matter search experiment is currently being deployed at the Homestake Laboratory in South Dakota We will highlight the main elements of design which make the experiment a very strong competitor in the field of direct detection, as well as an easily scalable concept. We will also present its potential reach for supersymmetric dark matter detection, within various timeframes ranging from 1 year to 5 years or more C1 [Fiorucci, S.; Chapman, J.; de Viveiros, L.; Gaitskell, R.; Faham, C. Hernandez; Malling, D.] Brown Univ, Dept Phys, 182 Hope St, Providence, RI 02912 USA. [Akerib, D. S.; Bradley, A.; Clark, K.; Dahl, E.; Phelps, P.; Shutt, T.] Case Western Reserve Univ, Dept Phys, Cleveland, OH 44106 USA. [Bedikian, S.; Curioni, A.; Kastens, L.; McKinsey, D.; Nikkel, J.] Yale Univ, Dept Phys, New Haven, CT 06511 USA. [Bernstein, A.; Dazeley, S.; Kazkaz, K.; Sorensen, P.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. [Bolozdynya, A.] Moscow Engn Phys Inst, Moscow 115409, Russia. [Classen, T.; Holbrook, B.; Lander, R.; Mock, J.; Svoboda, R.; Sweany, M.; Thomson, J.; Tripathi, M.; Walsh, N.; Woods, M.] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA. [Druszkiewicz, E.; Schroeder, U.; Skulski, W.; Toke, J.; Wolfs, F.] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA. [Hall, C.] Univ Maryland, Dept Phys, College Pk, MD 20742 USA. [Lesko, K.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Mannino, R.; Stiegler, T.; Webb, R.; White, J.] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA. [Mei, D.; Spaans, J.; Zhang, C.] Univ South Dakota, Dept Phys, Vermillion, SD 57069 USA. RP Fiorucci, S (reprint author), Brown Univ, Dept Phys, 182 Hope St, Providence, RI 02912 USA. RI Fiorucci, Stefano/I-1251-2012 NR 9 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0737-4 J9 AIP CONF PROC PY 2009 VL 1200 BP 977 EP + PG 2 WC Physics, Applied SC Physics GA BQK02 UT WOS:000281197200195 ER PT S AU Kile, J AF Kile, Jennifer BE Nath, P Alverson, G Nelson, B TI Light Fermionic Dark Matter and its Possible Detection in Neutrino Experiments SO SUSY09: THE 17TH INTERNATIONAL CONFERENCE ON SUPERSYMMETRY AND THE UNIFICATION OF FUNDAMENTAL INTERACTIONS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Supersymmetry and the Unification of Fundamental Interactions CY JUN 05-10, 2009 CL Northeastern Univ, Boston, MA SP US DOE, US Natl Sci Fdn HO Northeastern Univ DE Dark matter; neutrino detectors; inelastic dark matter; light dark matter AB We explore the potential for the direct detection of light fermionic dark matter in neutrino detectors We consider the possible observation of the process (f) over barp -> e(+)n, where f is a dark matter fermion, in a model-independent manner All operators of dimension six or lower which can contribute to this process are listed, and we place constraints on these operators from decays of f which contain gamma rays or electrons One operator is found which is sufficiently weakly constrained that it could give observable interactions in neutrino detectors We find that Super-Kamrokande can probe the new physics scale for this operator up to O(100 TeV) C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Kile, J (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 6 TC 0 Z9 0 U1 1 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0737-4 J9 AIP CONF PROC PY 2009 VL 1200 BP 1035 EP 1038 PG 4 WC Physics, Applied SC Physics GA BQK02 UT WOS:000281197200209 ER PT S AU Afanasev, A Baker, OK Beard, KB Biallas, G Boyce, J Minarni, M Ramdon, R Shinn, M Slocum, P AF Afanasev, A. Baker, O. K. Beard, K. B. Biallas, G. Boyce, J. Minarni, M. Ramdon, R. Shinn, M. Slocum, P. BE Nath, P Alverson, G Nelson, B TI Beyond the Standard Model Searches Using a Free Electron Laser SO SUSY09: THE 17TH INTERNATIONAL CONFERENCE ON SUPERSYMMETRY AND THE UNIFICATION OF FUNDAMENTAL INTERACTIONS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 17th International Conference on Supersymmetry and the Unification of Fundamental Interactions CY JUN 05-10, 2009 CL Northeastern Univ, Boston, MA SP US DOE, US Natl Sci Fdn HO Northeastern Univ DE Dark Matter; Beyond the Standard Model; Hidden Sector ID CP CONSERVATION; PARTICLES; COSMOLOGY AB Much of the focus of Beyond the Standard Model physics searches is on the TeV scale, making use of hadron and lepton colliders. Additionally, however, there is the means to make these searches in different regions of parameter space using sub-electron volt photons from a Free Electron Laser, for example. We report on the experimental results of searches for optical-wavelength photons mixing with hypothetical hidden-sector paraphotons in the mass range between 10(-5) and 10(-2) electron volts for a mixing parameter greater than 10(-7). We also report on the results of a sensitive search for scalar coupling of photons to light neutral bosons in the mass range of approximately 10 milli-electron volts and coupling strength greater than 10(-6) GeV-1 These were generation-regeneration experiments using the "light shining through a wall" technique in which regenerated photons are searched for downstream of an optical barrier that separates it from an upstream generation region. The present results indicate no evidence for photon-paraphoton mixing or for scalar couplings of bosons to photons for the range of parameters investigated. C1 [Afanasev, A.; Ramdon, R.] Hampton Univ, Dept Phys, Hampton, VA 23668 USA. [Baker, O. K.; Slocum, P.] Yale Univ, Dept Phys, New Haven, CT 06520 USA. [Beard, K. B.] Muons Inc, Batavia, IL 60510 USA. [Biallas, G.; Boyce, J.; Shinn, M.] Free Elect Laser Div, Jefferson Lab, Newport News, VA 23606 USA. [Minarni, M.] Univ Riau UNRI, Dept Phys, Pekanbaru 28293, Riau, Indonesia. RP Afanasev, A (reprint author), Hampton Univ, Dept Phys, Hampton, VA 23668 USA. OI Afanasev, Andrei/0000-0003-0679-3307 FU Office of Naval Research [K00141] FX The authors thank the technical staff of the Jefferson Lab Free Electron Laser Facility, especially F. Dylla, G. Neil, G. Williams, R. Walker, D. Douglas, S. Benson, K.Jordan, C. Hernandez-Garcia, and J. Gubeli, as well as M.C. Long of Hampton University for their excellent support of the experimental program. Funding from the Office of Naval Research Award K00141 is gratefully acknowledged. NR 34 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0737-4 J9 AIP CONF PROC PY 2009 VL 1200 BP 1081 EP + PG 2 WC Physics, Applied SC Physics GA BQK02 UT WOS:000281197200220 ER PT S AU Benmore, CJ Soignard, E Mei, Q Sen, S Parise, JB Yarger, JL AF Benmore, Chris J. Soignard, Emmanuel Mei, Qiang Sen, Sabyasachi Parise, John B. Yarger, Jeffery L. BE Paniago, RM TI Transitions in network and molecular glasses at high pressure SO SYNCHROTRON RADIATION IN MATERIALS SCIENCE SE AIP Conference Proceedings LA English DT Proceedings Paper CT 6th International Conference on Synchrotron Radiation in Materials Sciences CY JUL 20-23, 2008 CL Campinas, BRAZIL SP Conselho Nacl Desenvolvimento Cient Tecnol, Coordenac Aperfeicoament Pessoal Nivel Super, Program Sul Amer Apoio Ativadades Cooperac Cienc Tecnol, Fund Amparo Pesquisa Estado Sao Paulo DE Glasses; x-ray diffraction; high pressure AB The use of monochromatic, micro-focused, high energy x-ray beams have been used in combination with perforated diamond anvil cells to investigate transitions in several network glasses at high pressure. Of particular interest are glasses which readily form an open network structure e.g. SiO2, GeSe2, BeF2 and those which comprise of small molecular cages e.g. As4S3, AS(4)O(6). These materials have highly directional bonds and their normal pressure glassy forms tend to have a high degree of intermediate range order, signified by the existence of a first sharp diffraction peak. As the pressure is increased this peak decreases dramatically in intensity as the open regions of the network collapse. Simultaneously the (second) principal peak increases in intensity as the molecules in the glass move closer together resulting in increased extended range order. Gradual and abrupt amorphous-amorphous transitions have been observed in these binary systems, associated with both topological and local coordination number changes. C1 [Benmore, Chris J.] Argonne Natl Lab, Xray Sci Div, 9700 S Cass Ave, Argonne, IL 60439 USA. [Benmore, Chris J.; Soignard, Emmanuel; Yarger, Jeffery L.] Arizona State Univ, Dept Chem & Biochem, Tempe, AZ 85287 USA. [Benmore, Chris J.; Soignard, Emmanuel; Yarger, Jeffery L.] Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA. [Mei, Qiang] Argonne Natl Lab, Carnegie Inst Washington, Geophys Lab, HPCAT, Argonne, IL 60439 USA. [Sen, Sabyasachi] Univ Calif Davis, Dept Mat Sci, Davis, CA 95616 USA. [Parise, John B.] State Univ New York, Dept Geosci, New York, NY USA. RP Benmore, CJ (reprint author), Argonne Natl Lab, Xray Sci Div, 9700 S Cass Ave, Argonne, IL 60439 USA. EM benmore@anl.gov; esoignar@usa.net; Qiang.mei@hpcat.aps.anl.gov; sbsen@ucdavis.edu; John.parise@sunysb.edu; jeff.yarger@asu.edu OI Benmore, Chris/0000-0001-7007-7749 FU Argonne National Laboratory [DE-ACO2-06CH11357]; NSF chemistry; Carnegie/DOE Alliance Center [(DOE-NNSA CDAC) CDAC (JLY)]; NSF [DMR 0603933, DMR-0452444]; U.S. DOE [EAR-0510501]; DOD; Keck Foundation (JBP) FX This work was supported by Argonne National Laboratory under contract number DE-ACO2-06CH11357, NSF chemistry and by the Carnegie/DOE Alliance Center (DOE-NNSA CDAC) CDAC (JLY), NSF grant DMR 0603933 (SS), the U.S. DOE EAR-0510501, NSF DMR-0452444, DOD and the Keck Foundation (JBP). NR 10 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0625-4 J9 AIP CONF PROC PY 2009 VL 1092 BP 5 EP + PG 2 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA BJE87 UT WOS:000265244600002 ER PT S AU Parise, JB Ehm, L Michel, FM Antao, S Chupas, PJ Lee, PL Martin, CD Shastri, S AF Parise, John B. Ehm, Lars Michel, F. Marc Antao, Sytle Chupas, Peter J. Lee, Peter L. Martin, C. David Shastri, Sarvjit BE Paniago, RM TI Towards a better understanding of the structure of nano-minerals at ambient and extreme conditions SO SYNCHROTRON RADIATION IN MATERIALS SCIENCE SE AIP Conference Proceedings LA English DT Proceedings Paper CT 6th International Conference on Synchrotron Radiation in Materials Sciences CY JUL 20-23, 2008 CL Campinas, BRAZIL SP Conselho Nacl Desenvolvimento Cient Tecnol, Coordenac Aperfeicoament Pessoal Nivel Super, Program Sul Amer Apoio Ativadades Cooperac Cienc Tecnol, Fund Amparo Pesquisa Estado Sao Paulo DE Materials Science; Synchrotron Radiation ID PAIR DISTRIBUTION FUNCTION AB The high-pressure (HP) behavior of nano-crystalline mackinawite (n-FeS) with particle sizes of 6, 7, and 8 nm has been investigated by high-energy X-ray total scattering and pair distribution function analysis. An irreversible first-order structural phase transition from tetragonal mackinawite to orthorhombic FeS-II was observed at about 3 GPa. The transition is induced by the closure of the van-der-Waals gap in the layered mackinawite structure. A grain size effect on the transition pressure and the compressibility was observed. The n-FeS study is an example of a broad class of nano-crystalline minerals where the total scattering (TS) approach provides significant new information on local-, intermediate- and long-range structure. Under extreme conditions, of pressure in this case, straightforward modifications allow quantitative descriptions of the transformations mechanisms. C1 [Parise, John B.; Ehm, Lars; Michel, F. Marc] SUNY Stony Brook, Dept Geosci, Stony Brook, NY 11790 USA. [Parise, John B.; Ehm, Lars; Michel, F. Marc] SUNY Stony Brook, Inst Mineral Phys, Stony Brook, NY 11790 USA. [Antao, Sytle; Chupas, Peter J.; Lee, Peter L.; Martin, C. David; Shastri, Sarvjit] Argonne Natl Lab, X Ray Sci Div, Argonne, IL 60439 USA. RP Parise, JB (reprint author), SUNY Stony Brook, Dept Geosci, Stony Brook, NY 11790 USA. EM John.Parise@sunysb.edu; Lars.Ehm@sunysb.edu; Fredrick.Michel@sunysb.edu; santao@anl.gov; chupas@anl.gov; pllee@aps.anl.gov; Cmartin@anl.gov; SShastiri@anl.gov FU U.S. DOE [DE-ACO2-06CH11357 (APS) NSF-EAR-0217473, DE-FG02-94ER14466]; State of Illinois (GeoSoilEnviroCARS) [NSF-DMR-0452444, EAR-0510501, CHE-0221934 (JBP)] FX This work was supported by the following grants and contracts: U.S. DOE Contract DE-ACO2-06CH11357 (APS) NSF-EAR-0217473, DE-FG02-94ER14466 and the State of Illinois (GeoSoilEnviroCARS), NSF-DMR-0452444, EAR-0510501, and CHE-0221934 (JBP) NR 9 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0625-4 J9 AIP CONF PROC PY 2009 VL 1092 BP 41 EP + PG 2 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA BJE87 UT WOS:000265244600011 ER PT S AU Weber, R Benmore, C Mei, Q Wilding, M AF Weber, Richard Benmore, Christopher Mei, Qiang Wilding, Martin BE Paniago, RM TI In-situ X-ray structure measurements on aerodynamically levitated high temperature liquids SO SYNCHROTRON RADIATION IN MATERIALS SCIENCE SE AIP Conference Proceedings LA English DT Proceedings Paper CT 6th International Conference on Synchrotron Radiation in Materials Sciences CY JUL 20-23, 2008 CL Campinas, BRAZIL SP Conselho Nacl Desenvolvimento Cient Tecnol, Coordenac Aperfeicoament Pessoal Nivel Super, Program Sul Amer Apoio Ativadades Cooperac Cienc Tecnol, Fund Amparo Pesquisa Estado Sao Paulo DE Materials Science; Synchrotron radiation ID NMR; ALUMINOSILICATE; GLASSES AB High energy, high flux X-ray sources enable new measurements of liquid and amorphous materials in extreme conditions. Aerodynamic levitation in combination with laser beam heating can be used to access high purity and non-equilibrium liquids at temperatures up to 3000 K. In this works a small aerodynamic levitator was integrated with high energy beamline I I ID-C at the Advanced Photon Source. Scattered X-rays were detected with a Mar345 image plate. The experiments investigated a series of binary in the CaO-Al2O3, MgO-SiO2, SiO2-Al2O3 metal oxide compositions and pure SiO2. The results show that the liquids exhibit large changes in structure when the predominant network former is diluted. Measurements on glasses with the same compositions as the liquids suggest that significant structural rearrangement consistent with a fragile-strong transition occurs in these reluctant glass forming liquids as they vitrify. C1 [Weber, Richard] Mat Dev Inc, Arlington Hts, IL 60004 USA. [Weber, Richard; Benmore, Christopher; Mei, Qiang] Argonne Natl Lab, Argonne, IL 60439 USA. [Wilding, Martin] Univ Wales Coll Cardiff, Cardiff, Wales. RP Weber, R (reprint author), Mat Dev Inc, Arlington Hts, IL 60004 USA. EM rweber@matsdev.com; benmore@anl.gov; qiang.mei@hpcat.aps.anl.gov; mbw@aber.edu OI Benmore, Chris/0000-0001-7007-7749 FU U.S.DOE,at Argonne NAtional Laboratory [DE-AC02-06CH11357.] FX This work was supported by the U.S.DOE,at Argonne NAtional Laboratory under contract Number DE-AC02-06CH11357. NR 11 TC 0 Z9 0 U1 1 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0625-4 J9 AIP CONF PROC PY 2009 VL 1092 BP 79 EP + PG 2 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA BJE87 UT WOS:000265244600020 ER PT J AU Silks, LA Kimball, DB Hatch, D Ollivault-Shiflett, M Michalczyk, R Moody, E AF Silks, Louis A., III Kimball, David B. Hatch, Duane Ollivault-Shiflett, Morgane Michalczyk, Ryszard Moody, Eddie TI Chiral N-Acetyl Selone-Promoted Aldol Reactions SO SYNTHETIC COMMUNICATIONS LA English DT Article DE Acetate aldol; enolate structure; selenocarbonyl; 77Se NMR spectroscopy ID NMR-SPECTROSCOPY; CURRENT PROGRESS; ACYL SELONES; ADDITIONS; AUXILIARY; REAGENTS; ENOLATE; ESTERS AB The chiral oxazolidineselone functionality was found to be an excellent partner in the stereospecific acetate aldol reaction with aldehydes via the titanium enolates. Good stereocontrol was obtained as determined by NMR spectroscopy. The oxazolidineselone also provided a straightforward way to establish the stereopurity of the coupling reaction through 77Se NMR spectroscopy. C1 [Silks, Louis A., III; Hatch, Duane; Ollivault-Shiflett, Morgane; Michalczyk, Ryszard] Los Alamos Natl Lab, Biosci Div, Natl Stable Isotope Resource, Grp B8 Bioenergy & Environm Sci, Los Alamos, NM 87544 USA. [Kimball, David B.] Los Alamos Natl Lab, Biosci Div, Adv Measurement Sci Grp B9, Los Alamos, NM 87544 USA. [Moody, Eddie] Los Alamos Natl Lab, Biosci Div, NMT Div, Los Alamos, NM 87544 USA. RP Silks, LA (reprint author), Los Alamos Natl Lab, Biosci Div, Natl Stable Isotope Resource, Grp B8 Bioenergy & Environm Sci, MS,E529, Los Alamos, NM 87544 USA. EM pete-silks@lanl.gov OI Silks, Pete/0000-0002-2993-5630; Michalczyk, Ryszard/0000-0001-8839-6473 FU LANL LDRD [X9DN]; CDC FX We thank the LANL LDRD program (X9DN) and the CDC for partial support for this work. NR 34 TC 4 Z9 4 U1 1 U2 3 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 0039-7911 J9 SYNTHETIC COMMUN JI Synth. Commun. PY 2009 VL 39 IS 4 BP 641 EP 653 AR PII 908219650 DI 10.1080/00397910802419706 PG 13 WC Chemistry, Organic SC Chemistry GA 400HS UT WOS:000262859200009 ER PT B AU LePoire, DJ AF LePoire, David J. BE Thompson, WR TI Exploration of Connections between Energy Use and Leadership Transitions SO SYSTEMIC TRANSITIONS: PAST, PRESENT, AND FUTURE SE Evolutionary Processes in World Politics LA English DT Article; Book Chapter ID LOGISTIC ANALYSIS; COMPLEXITY; GROWTH; MODELS C1 Argonne Natl Lab, Div Environm Sci, Radiol Hlth Risk Sect, Argonne, IL 60439 USA. RP LePoire, DJ (reprint author), Argonne Natl Lab, Div Environm Sci, Radiol Hlth Risk Sect, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 47 TC 0 Z9 0 U1 0 U2 0 PU PALGRAVE PI BASINGSTOKE PA HOUNDMILLS, BASINGSTOKE RG21 6XS, ENGLAND BN 978-0-230-61838-1 J9 EVOL PROC WORLD POL PY 2009 BP 205 EP 220 D2 10.1057/9780230618381 PG 16 WC Economics; Political Science SC Business & Economics; Government & Law GA BSC07 UT WOS:000284095700010 ER PT S AU Hevner, A Linger, R Pleszkoch, M Prowell, S Walton, G AF Hevner, Alan Linger, Richard Pleszkoch, Mark Prowell, Stacy Walton, Gwendolyn BE Chiang, RHL Siau, K Hardgrave, BC TI FLOW-SERVICE-QUALITY (FSQ) SYSTEMS ENGINEERING A Discipline for Developing Network-Centric Information Systems SO SYSTEMS ANALYSIS AND DESIGN: TECHNIQUES, METHODOLOGIES, APPROACHES, AND ARCHITECTURES SE Advances in Management Information Systems LA English DT Article; Book Chapter DE Systems Engineering; System Integration; Flows; Services; Qualities; Information Systems; Systems of Systems; System Analysis and Design; System Specification ID SPECIFICATION; FOUNDATIONS AB Modern enterprises are irreversibly dependent on large-scale information systems built from components whose function and quality attributes are not necessarily known a priori. The ad hoc and network-centric nature of these systems means that a complete static analysis of such systems is difficult or impossible. These systems grow and interconnect with other systems in ways that exceed current engineering techniques for intellectual control. We propose a new engineering framework for reasoning about and developing such systems of systems: the Flow-Service-Quality (FSQ) framework. Our aim is to provide rigorous, practical engineering tools and methods to reason about system flows as first-class objects of specification, design, implementation, and operation. System flows are realized as traces of system services, and their quality attributes are treated as dynamic, changing quantities that are measured during system execution. C1 [Hevner, Alan] Univ S Florida, Informat Syst & Decis Sci Dept, Tampa, FL 33620 USA. [Hevner, Alan] Univ Maryland, College Pk, MD 20742 USA. [Hevner, Alan] Univ Minnesota, Minneapolis, MN 55455 USA. [Linger, Richard] Carnegie Mellon Univ, Inst Software Engn, CERT STAR Lab, Pittsburgh, PA 15213 USA. [Linger, Richard] Carnegie Mellon Univ, Survivable Syst Engn Grp, Pittsburgh, PA 15213 USA. [Linger, Richard; Pleszkoch, Mark] IBM Corp, Armonk, NY USA. [Pleszkoch, Mark] Univ Virginia, Math Assoc Amer, Charlottesville, VA 22903 USA. [Walton, Gwendolyn] Inst Software Engn, CERT Program, Bombay, Maharashtra, India. [Walton, Gwendolyn] Software Engn Technol Inc, Knoxville, TN USA. [Walton, Gwendolyn] Sci Applicat Int Corp, Hampton, VA USA. [Walton, Gwendolyn] Lockheed Missiles & Space Co, Palo Alto, CA USA. [Walton, Gwendolyn] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Hevner, A (reprint author), Univ S Florida, Informat Syst & Decis Sci Dept, Tampa, FL 33620 USA. NR 10 TC 0 Z9 0 U1 0 U2 0 PU M E SHARPE INC PI ARMONK PA 80 BUSINESS PARK DRIVE, ARMONK, NY 10504 USA SN 1554-6152 BN 978-0-7656-2352-2 J9 ADV MANAG INFORM SYS PY 2009 VL 15 BP 11 EP 20 PG 10 WC Computer Science, Information Systems SC Computer Science GA BUB68 UT WOS:000288747400003 ER PT J AU Larson, ED Consonni, S Katofsky, RE Iisa, K Frederick, WJ AF Larson, Eric D. Consonni, Stefano Katofsky, Ryan E. Iisa, Kristiina Frederick, W. James, Jr. TI An assessment of gasification-based biorefining at kraft pulp and paper mills in the United States, Part B: Results SO TAPPI JOURNAL LA English DT Article AB Commercialization of black liquor and biomass gasification technologies is anticipated in the 2010-2015 timeframe, and synthesis gas from gasifiers can be converted into liquid fuels using catalytic synthesis technologies that are already commercially established today in the gas-to-liquids or coal-to-liquids industries. This set of two papers describes key results from a major assessment of the prospective energy, environmental, and financial performance of commercial gasification-based biorefineries integrated with kraft pulp and paper mills. Seven detailed biorefinery designs were developed for a reference mill in the southeastern United States, together with the associated mass/energy balances, air emissions estimates, and capital investment requirements. The biorefineries provide chemical recovery services and co-produce process steam for the mill, some electricity, and one of three liquid fuels: a Fischer-Tropsch synthetic crude oil (which could be refined to vehicle fuels at an existing petroleum refinery), dimethyl ether (a diesel engine fuel or propane substitute), or an ethanol-rich mixed-alcohol product. Compared with installing new Tomlinson power/recovery systems, biorefineries would require more capital investment and greater purchases of woody residues for energy use. However, because biorefineries would be more efficient, have lower air emissions, and produce a more diverse product slate, for nearly all cases examined, the internal rate of return (IRR) on the incremental capital investment lies between 14% and 18%, assuming a $ 50/bbl world oil price. The IRRs would more than double if plausible federal and state financial incentives were captured. Industry-wide adoption of such biorefining in the United States would provide significant energy and environmental benefits to the country. C1 [Larson, Eric D.] Princeton Univ, Princeton Environm Inst, Princeton, NJ 08544 USA. [Consonni, Stefano] Politecn Milan, Dept Energy Engn, I-20133 Milan, Italy. [Iisa, Kristiina; Frederick, W. James, Jr.] Natl Renewable Energy Lab, Golden, CO USA. RP Larson, ED (reprint author), Princeton Univ, Princeton Environm Inst, Princeton, NJ 08544 USA. EM elarson@princeton.edu OI Consonni, Stefano/0000-0002-4158-4140 FU U.S. Department of Energy Biomass Program; American Forest and Paper Association; Princeton University Carbon Mitigation Initiative; William and Flora Hewlett Foundation; Institute of Paper Science and Technology (IPST) FX For primary financial support, we thank the U.S. Department of Energy Biomass Program and the American Forest and Paper Association. In addition, support is gratefully acknowledged from the Princeton University Carbon Mitigation Initiative, the William and Flora Hewlett Foundation, and the member companies of the Institute of Paper Science and Technology (IPST) (at the Georgia Institute of Technology) who have sponsored IPST's research project " Gasification and Biorefinery Development." NR 11 TC 7 Z9 7 U1 0 U2 9 PU TECH ASSOC PULP PAPER IND INC PI NORCROSS PA 15 TECHNOLOGY PARK SOUTH, NORCROSS, GA 30092 USA SN 0734-1415 J9 TAPPI J JI TAPPI J. PD JAN PY 2009 VL 8 IS 1 BP 27 EP 35 PG 9 WC Materials Science, Paper & Wood SC Materials Science GA 526DU UT WOS:000272268700005 ER PT S AU Barrick, TA Wanke, MC Fortier, K Grine, AD Reno, JL Lyo, SK Shaner, EA Allen, SJ AF Barrick, T. A. Wanke, M. C. Fortier, K. Grine, A. D. Reno, J. L. Lyo, S. K. Shaner, E. A. Allen, S. J. BE Linden, KJ Sadwick, LP OSullivan, CMM TI Terahertz absorption by resonant plasmon excitations in grating-gated quantum wells SO TERAHERTZ TECHNOLOGY AND APPLICATIONS II SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Terahertz Technology and Applications II CY JAN 28-29, 2009 CL San Jose, CA SP SPIE DE photomixing; field-effect transistors; terahertz; spectroscopy; two-dimensional plasmons; 2DEG; detectors AB Terahertz detection using excitations of plasmon modes offers a high-speed, high resolution, and frequency-selective alternative to existing technology. Plasmons in high mobility quantum well two-dimensional electron gas (2DEG) systems can couple to radiation when either the channel carrier density, or the incident radiation, is spatially modulated with appropriate periodicity. Grating-gated terahertz detectors having a voltage tunable frequency response have been developed based on this principle. A continuous wave THz photomixer was used to characterize the resonant absorption in such devices. At the fundamental 2DEG plasmon frequency, defined by the grating and the quantum well carrier density, a 20% change in transmission was observed. As the resonance is tuned from the 'natural' plasmon frequency through application of a gate bias, it shifts as expected, but the transmission change drops to only a few percent. C1 [Barrick, T. A.; Wanke, M. C.; Fortier, K.; Grine, A. D.; Reno, J. L.; Lyo, S. K.; Shaner, E. A.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Barrick, TA (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 9 TC 0 Z9 0 U1 1 U2 2 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-7461-2 J9 PROC SPIE PY 2009 VL 7215 AR 721509 DI 10.1117/12.808865 PG 7 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Instruments & Instrumentation; Optics; Spectroscopy SC Engineering; Science & Technology - Other Topics; Instruments & Instrumentation; Optics; Spectroscopy GA BST70 UT WOS:000285751800006 ER PT S AU Wanke, MC Norquist, CD Cich, MJ Rowen, AM Arrington, CL Lee, M Grine, AD Fuller, CT Reno, JL Young, EW AF Wanke, Michael C. Norquist, Christopher D. Cich, Michael J. Rowen, Adam M. Arrington, Christian L. Lee, Mark Grine, Albert D. Fuller, Chuck T. Reno, John L. Young, Erik W. BE Linden, KJ Sadwick, LP OSullivan, CMM TI Terahertz quantum cascade laser integration with on-chip micromachined rectangular waveguides SO TERAHERTZ TECHNOLOGY AND APPLICATIONS II SE Proceedings of SPIE-The International Society for Optical Engineering LA English DT Proceedings Paper CT Conference on Terahertz Technology and Applications II CY JAN 28-29, 2009 CL San Jose, CA SP SPIE DE Quantum Cascade Laser; Terahertz; Rectangular Waveguides AB Integration of THz quantum cascade lasers (QCLs) with single-mode 75 mu m x 37 mu m rectangular waveguide components, including horn antennas, couplers, and bends, for operation at 3 THz has been designed and fabricated using thick gold micromachining. Measurements on the isolated waveguide components exhibit fairly low loss and integration with THz QCLs has been demonstrated. This technology offers the potential for realizing miniature integrated systems operating in the 3 THz frequency range. C1 [Wanke, Michael C.; Norquist, Christopher D.; Cich, Michael J.; Rowen, Adam M.; Lee, Mark; Fuller, Chuck T.; Reno, John L.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Wanke, MC (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM mcwanke@sandia.gov NR 12 TC 3 Z9 3 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-7461-2 J9 P SOC PHOTO-OPT INS PY 2009 VL 7215 AR 721504 DI 10.1117/12.809853 PG 11 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Instruments & Instrumentation; Optics; Spectroscopy SC Engineering; Science & Technology - Other Topics; Instruments & Instrumentation; Optics; Spectroscopy GA BST70 UT WOS:000285751800003 ER PT S AU Krishnan, M Schulz, R Smith, JC AF Krishnan, M. Schulz, R. Smith, Jeremy C. BE Wei, DQ Wang, XJ TI Protein Dynamical Transition : Role of Methyl Dynamics and Local Diffusion SO THEORY AND APPLICATIONS OF COMPUTATIONAL CHEMISTRY - 2008 SE AIP Conference Proceedings LA English DT Proceedings Paper CT Conference on Theory and Applications of Computational Chemistry CY SEP 23-27, 2008 CL Shanghai, PEOPLES R CHINA SP Shanghai Jiao Tong Univ, Int Assoc Scientists Interdisciplinary Areas, Natl Sci Fdn China, Res Councils UK, Chinese Chem Soc, Canadian Hongcam Int Trade Corp, Tri Biotech, Shanghai Ctr Bioinformat Technol, KC Wong Educ Fdn, Interdisciplinary Sci, Computat Life Sci, Mol Simulat, Chem Phys & Biophys Chem, Acta Physico Chem Sinica, Journal Mol Graph & Modelling DE Protein Dynamical Transition; Methyl Dynamics; Instantaneous Normal Modes; Molecular Dynamics ID INELASTIC NEUTRON-SCATTERING; NORMAL-MODE ANALYSIS; INSTANTANEOUS NORMAL-MODES; LIQUID-STATE DYNAMICS; DENSITY-OF-STATES; MOLECULAR-DYNAMICS; ENZYME-ACTIVITY; UNSTABLE MODES; TEMPERATURE-DEPENDENCE; SIMULATION ANALYSIS AB The temperature-dependent protein dynamical transition is investigated using the Instanteous Normal mode analysis (INM) and molecular dynamics (MD) simulation of crystalline myoglobin and Toxin II. The onset of anharmonic dynamics in myoglobin is observed at 150 K, far below the much-studied solvent-activated dynamical transition at 220 K. A significant fraction of methyl groups exhibit nanosecond anharmonic rotational jump diffusion at 150 K indicating the essential role of methyl dynamics in the low-temperature onset of anharmonic protein dynamics. The methyl groups that exhibit many rotational excitations are located near xenon cavities, suggesting that cavities in proteins act as activation centers of anharmonic dynamics. INM analysis of Toxin 11 indicates the presence of non-zero barrier-crossing, diffusive degrees of freedom accessible to the protein below the dynamical transition. The number of these diffusive degrees of freedom increases abruptly at the dynamical transition. In summary, the present investigation suggests that local diffusive processes (for example, methyl dynamics) are activated at low temperatures (much below 220 K) leading to global diffusive protein dynamics (this involves excitation of many protein atoms) at the dynamical transition. C1 [Krishnan, M.; Schulz, R.; Smith, Jeremy C.] Oak Ridge Natl Lab, Ctr Biophys Mol, Oak Ridge, TN 37831 USA. RP Krishnan, M (reprint author), Oak Ridge Natl Lab, Ctr Biophys Mol, 1 Bethel Valley, Oak Ridge, TN 37831 USA. EM krishnanm@ornl.gov RI Schulz, Roland/A-1868-2010; smith, jeremy/B-7287-2012 OI Schulz, Roland/0000-0003-1603-2413; smith, jeremy/0000-0002-2978-3227 NR 54 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-0637-7 J9 AIP CONF PROC PY 2009 VL 1102 BP 122 EP 131 PG 10 WC Chemistry, Multidisciplinary; Mathematical & Computational Biology; Physics, Applied SC Chemistry; Mathematical & Computational Biology; Physics GA BJE20 UT WOS:000265089800005 ER PT S AU Steefel, CI Maher, K AF Steefel, Carl I. Maher, Kate BE Oelkers, EH Schott, J TI Fluid-Rock Interaction: A Reactive Transport Approach SO THERMODYNAMICS AND KINETICS OF WATER-ROCK INTERACTION SE Reviews in Mineralogy & Geochemistry LA English DT Review CT 19th Annual V M Goldschmidt Conference CY JUN 19-21, 2009 CL Davos, SWITZERLAND SP Mineralog Soc Amer, Geochem Soc ID BACTERIAL SULFATE REDUCTION; PROCESSES INVOLVING MINERALS; FELDSPAR DISSOLUTION RATES; GEOCHEMICAL REACTION-RATES; MARINE-SEDIMENTS; MASS-TRANSPORT; POROUS-MEDIA; ANAEROBIC OXIDATION; AQUEOUS-SOLUTIONS; GROUNDWATER AGE C1 [Steefel, Carl I.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA. [Maher, Kate] Stanford Univ, Sch Earth Sci, Dept Geol & Environm Sci, Stanford, CA 94305 USA. RP Steefel, CI (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA. EM CISteefel@lbl.gov RI Maher, Kate/B-3489-2010; Steefel, Carl/B-7758-2010 OI Maher, Kate/0000-0002-5982-6064; FU U.S. Department of Energy [DE-AC02-05CH 11231] FX We are pleased to be able to contribute this chapter to a volume honoring the career of Jacques Schott, who has championed a mechanistic and quantitative understanding of geochemistry now for over 30 years. Funding from the Office of Science at the U.S. Department of Energy through the Geoscience Program in the Office of Basic Energy Sciences (Contract No. DE-AC02-05CH 11231) is gratefully acknowledged. NR 107 TC 82 Z9 82 U1 6 U2 53 PU MINERALOGICAL SOC AMER PI CHANTILLY PA 3635 CONCORDE PKWY STE 500, CHANTILLY, VA 20151-1125 USA SN 1529-6466 BN 978-0-939950-84-3 J9 REV MINERAL GEOCHEM PY 2009 VL 70 BP 485 EP 532 DI 10.2138/rmg.2009.70.11 PG 48 WC Geochemistry & Geophysics; Mineralogy SC Geochemistry & Geophysics; Mineralogy GA BKQ15 UT WOS:000268929000011 ER PT S AU Davis, RW Carson, B Jones, HDT Sinclair, MB AF Davis, Ryan W. Carson, Bryan Jones, Howland D. T. Sinclair, Michael B. BE Conchello, JA Cogswell, CJ Wilson, T TI Hyperspectral Image Correlation for Monitoring Membrane Protein Dynamics in Living Cells SO THREE-DIMENSIONAL AND MULTIDIMENSIONAL MICROSCOPY: IMAGE ACQUISITION AND PROCESSING XVI SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Three-Dimensional and Multidimensional Microscopy - Image Acquisition and Processing XVI CY JAN 26-29, 2009 CL San Jose, CA SP SPIE DE Hyperspectral imaging; image correlation spectroscopy; multivariate analysis; multivariate curve resolution; MCR; fluorescence imaging; spectral cross-talk; spectral bleed-through; autofluorescence; membrane receptor; TLR4; immune response; lipopolysaccharide; LPS ID CROSS-CORRELATION SPECTROSCOPY; LPS AB Temporal image correlation provides a powerful fluorescence technique for measuring several biologically relevant parameters of molecules in living cells. These parameters include, but are not limited to local concentrations, diffusion dynamics, and aggregation states of biomolecules. However, the complex cellular environment presents several limitations, precluding high quantitative accuracy and constraining biological implementation. In order to address these issues, high speed spectral imaging was employed to compare the results of image correlation from spectrally unmixed and virtually implemented fluorescence emission filters. Of particular interest in this study is the impact of cellular autofluorescence, which is ubiquitous in fluorescence imaging of cells and tissues. Using traditional instrumentation, corrections for autofluorescence are commonly estimated as a static offset collected from a separate control specimen. While this may be sufficient in highly homogenous regions of interest, the low analyte concentrations requisite to fluctuation-based methods result in the potential for unbounded error resulting from spectral cross-talk between local autofluorescence inhomogeneities and the fluorescence signal of interest. Thus we demonstrate the importance of accurate autofluorescence characterization and discuss potential corrections using a case study focusing on fluorescence confocal spectral imaging of immune cells before and after stimulation with lipopolysaccheride (LPS). In these experiments, binding of LPS to the membrane receptor, YFP-TLR4, is observed to result in initiation of the immune response characterized by altered receptor diffusion dynamics and apparent heterogeneous aggregation states. In addition to characterizing errors resulting from autofluorescence spectral bleed-through, we present data leading to a deeper understanding of the molecular dynamics of the immune response and suggest hypotheses for future work utilizing hyperspectrally enabled multi-label fluorescence studies on this system of high biological import. C1 [Davis, Ryan W.; Carson, Bryan; Jones, Howland D. T.; Sinclair, Michael B.] Sandia Natl Labs, Albuquerque, NM 87123 USA. RP Davis, RW (reprint author), Sandia Natl Labs, 1515 Eubank Blvd SE, Albuquerque, NM 87123 USA. EM rwdavis@sandia.gov NR 28 TC 1 Z9 1 U1 0 U2 0 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-7430-8 J9 PROC SPIE PY 2009 VL 7184 AR 71840J DI 10.1117/12.807743 PG 12 WC Microscopy; Optics; Imaging Science & Photographic Technology SC Microscopy; Optics; Imaging Science & Photographic Technology GA BSL65 UT WOS:000284868100008 ER PT B AU Gao, MC Dogan, ON King, P AF Gao, Michael C. Dogan, Omer N. King, Paul GP TMS TI FIRST PRINCIPLES DESIGN OF DUCTILE REFRACTORY ALLOYS: DUCTILITY CRITERIA SO TMS 2009 138TH ANNUAL MEETING & EXHIBITION - SUPPLEMENTAL PROCEEDINGS, VOL 1: MATERIALS PROCESSING AND PROPERTIES LA English DT Proceedings Paper CT 138th TMS Annual Meeting and Exhibition CY FEB 15-19, 2009 CL San Francisco, CA DE First Principles; Refractory Alloys; Elasticity; Ductility; Poisson Ratio; Rice-Thompson ratio; Phase Diagrams ID TOTAL-ENERGY CALCULATIONS; 1ST-PRINCIPLES CALCULATION; AL; CE; ND AB Mo-based alloys hold the promises for advanced fossil power generation applications such as oxy-fuel gas turbines due to its high melting point of 2623 degrees C. However, it has low ductility at low homologous temperatures and thus improvement to its ductility has been an area of intense interest for decades. Several ductility criteria have been proposed and controversy remains. In this work, we examine two criteria for selected pure transition metals and Mo-based refractory alloys using first principles calculations, namely the Rice-Thomson parameter and Poisson's ratio. The Rice-Thomson parameter refers to the ratio mu b/gamma, where mu is the shear modulus of the material in the preferred slip plane; b is the Burgers vector of a dislocation in the preferred slip direction within the slip plane and gamma is the surface energy of the fracture plane. The present study suggests that both ductility criteria agree with each other physically and qualitatively. C1 [Gao, Michael C.; Dogan, Omer N.; King, Paul] Natl Energy Technol Lab, Albany, OR 97321 USA. RP Gao, MC (reprint author), Natl Energy Technol Lab, 1450 Queen Ave SW, Albany, OR 97321 USA. NR 29 TC 0 Z9 0 U1 0 U2 0 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA BN 978-0-87339-738-4 PY 2009 BP 157 EP 163 PG 7 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Mineralogy SC Materials Science; Metallurgy & Metallurgical Engineering; Mineralogy GA BJC15 UT WOS:000264674000021 ER PT B AU Hovanski, Y Weil, KS Lavender, C AF Hovanski, Yuri Weil, K. Scott Lavender, Curt GP TMS TI Developments in Die Pressing Strategies for Low-Cost Titanium Powders SO TMS 2009 138TH ANNUAL MEETING & EXHIBITION - SUPPLEMENTAL PROCEEDINGS, VOL 1: MATERIALS PROCESSING AND PROPERTIES LA English DT Proceedings Paper CT 138th TMS Annual Meeting and Exhibition CY FEB 15-19, 2009 CL San Francisco, CA DE Titanium; Friction; Powder ID FRICTION MEASUREMENTS; COMPACTION; TECHNOLOGIES AB Recent developments in the production of low-cost titanium powders have rejuvenated interest in manufacturing titanium powder metallurgy components by direct press and sinter techniques. However excessive friction typically observed during titanium powder pressing operations leads to numerous problems ranging from non-homogeneous green densities of the compacted powder to excessive part ejection forces and reduced die life due to wear and galling. An instrumented double-acting die press was developed to both investigate the mechanics of titanium powder pressing (particularly for the new low-cost powder morphologies) and to screen potential lubricants that could reduce frictional effects. As will be discussed, the instrument was used to determine friction coefficients and to evaluate a number of candidate lubricants. These results were then used to optimize the lubricant system to reduce die-wall stresses and improve part density uniformity. C1 [Hovanski, Yuri; Weil, K. Scott; Lavender, Curt] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Hovanski, Y (reprint author), Pacific NW Natl Lab, 902 Battelle Blvd, Richland, WA 99352 USA. NR 13 TC 2 Z9 2 U1 1 U2 4 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA BN 978-0-87339-738-4 PY 2009 BP 549 EP 556 PG 8 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Mineralogy SC Materials Science; Metallurgy & Metallurgical Engineering; Mineralogy GA BJC15 UT WOS:000264674000068 ER PT B AU Kwong, KS Bennett, J Krabbe, R Petty, A Thomas, H AF Kwong, Kyei-Sing Bennett, James Krabbe, Rick Petty, Art Thomas, Hugh GP TMS TI Thermodynamic Calculations Predicting MgO Saturated EAF Slag for Use in EAF Steel Production SO TMS 2009 138TH ANNUAL MEETING & EXHIBITION - SUPPLEMENTAL PROCEEDINGS, VOL 2: MATERIALS CHARACTERIZATION, COMPUTATION AND MODELING LA English DT Proceedings Paper CT 138th TMS Annual Meeting and Exhibition CY FEB 15-19, 2009 CL San Francisco, CA DE EAF; MgO saturated slags; Thermodynamic calculations AB Foamy slags are widely used in EAF steel production because the use of these slags result in energy savings, productivity improvements, and enhanced refractory service life. Foamy slag requires the control of slag viscosity to sustain gas bubbles during processing. This is accomplished through the precipitation of magnesium wustite particles in the slag at the operating temperature. A thermodynamic program, Factsage (TM), was utilized to study the quaternary oxide system of MgO-CaO-FeO-SiO(2), to predict the dual (saturated with CaO and MgO) and MgO saturated EAF slag chemistry under different oxygen partial pressures, temperatures, and slag basicity. These predictions indicate a linear relationship between oxide components and slag basicity, from which an accurate prediction of the optimum slag chemistry can be made. The results of the Factsage (TM) models will be compared to models developed by other researchers and experimental data. C1 [Kwong, Kyei-Sing; Bennett, James; Krabbe, Rick; Petty, Art; Thomas, Hugh] US DOE, Natl Energy Technol Lab, Washington, DC 20585 USA. RP Kwong, KS (reprint author), US DOE, Natl Energy Technol Lab, Washington, DC 20585 USA. NR 7 TC 1 Z9 1 U1 0 U2 2 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA BN 978-0-87339-739-1 PY 2009 BP 63 EP 70 PG 8 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Materials Science, Characterization & Testing; Mineralogy SC Materials Science; Metallurgy & Metallurgical Engineering; Mineralogy GA BJC16 UT WOS:000264674700009 ER PT B AU Nakano, J Seetharaman, S Bennett, J Kwong, KS Moss, T AF Nakano, Jinichiro Seetharaman, Sridhar Bennett, James Kwong, Kyei-Sing Moss, Tyler GP TMS TI REFRACTORY DEGRADATION BY SLAG ATTACK IN COAL GASIFICATION SO TMS 2009 138TH ANNUAL MEETING & EXHIBITION - SUPPLEMENTAL PROCEEDINGS, VOL 2: MATERIALS CHARACTERIZATION, COMPUTATION AND MODELING LA English DT Proceedings Paper CT 138th TMS Annual Meeting and Exhibition CY FEB 15-19, 2009 CL San Francisco, CA DE Integrated Gasification Combined Cycle; Coal; Petcoke; Alumina; Chromia; Vanadium oxide ID VANADIUM; OXIDE AB This research investigates sessile drop interfacial reactions between two refractory materials (high-chromia and alumina) and two synthetic slags (coal and petcoke). Pulverized slag samples were placed at specific microstructure locations on refractory substrates and heated to 1500 degrees C at log(Po(2)) = -9, using a high-speed heating chamber. Cross-sections of the slag/refractory interface indicated unique slag penetration into preferred areas of the refractory and grain dissolution into the slag through a de-bonding mechanism. Initially, the slag attacked both grain boundaries and fine microstructure areas, freeing alumina grains into the slag. Crystalline VO(x) formation in the petcoke slag was found to alter the overall liquid composition. Chemical spallation of Cr-containing crystal layer facilitated degradation of the refractory. C1 [Nakano, Jinichiro; Seetharaman, Sridhar] Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. RP Nakano, J (reprint author), Natl Energy Technol Lab, 626 Cochrans Mill Rd, Pittsburgh, PA 15236 USA. NR 12 TC 0 Z9 0 U1 0 U2 0 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA BN 978-0-87339-739-1 PY 2009 BP 197 EP 204 PG 8 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Materials Science, Characterization & Testing; Mineralogy SC Materials Science; Metallurgy & Metallurgical Engineering; Mineralogy GA BJC16 UT WOS:000264674700025 ER PT B AU Diaz, LMF Zhu, J Holcomb, GR Jablonski, PD Alman, DE Sridhar, S AF Diaz, L. M. Fernandez Zhu, J. Holcomb, G. R. Jablonski, P. D. Alman, D. E. Sridhar, S. GP TMS TI STUDIES ON TRANSIENT-STAGE-SCALE GROWTH ON Fe-22wt.% Cr ALLOYS CONTAINING 120 PPM La+270 PPM Ce SO TMS 2009 138TH ANNUAL MEETING & EXHIBITION - SUPPLEMENTAL PROCEEDINGS, VOL 3: GENERAL PAPER SELECTIONS LA English DT Proceedings Paper CT 138th TMS Annual Meeting and Exhibition CY FEB 15-19, 2009 CL San Francisco, CA DE reactive elements; high temperature oxidation; high chromium content iron alloys ID OXIDATION AB Reactive elements (RE), such as Ce, La or Y, are known to improve oxidation resistance of Fe based alloys that form Cr(2)O(3) scales. The current investigation aims to characterize the oxide scale in a Fe-22 wt.% Cr alloy containing 120 ppm La and 270 ppm Cc (added during melt-stage processing) as a function of oxidation times (at 800 degrees C in dry air) during the transient stage of scale formation. The surface oxidation processes were imaged in-situ through a Confocal Scanning Laser Microscope (CSLM). The results are correlated with post-experiment characterization through FEG-SEM and dual beam FIB-SEM. The evolution of the reactive-elements-containing scale, its morphology and composition are determined. C1 [Diaz, L. M. Fernandez; Zhu, J.] Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. RP Diaz, LMF (reprint author), Natl Energy Technol Lab, 626 Cochran Mill Rd, Pittsburgh, PA 15236 USA. RI Holcomb, Gordon/G-9070-2013; OI Holcomb, Gordon/0000-0003-3542-5319; Zhu, Jingxi/0000-0002-0019-0647 NR 9 TC 0 Z9 0 U1 0 U2 3 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA BN 978-0-87339-740-7 PY 2009 BP 313 EP 320 PG 8 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Mineralogy SC Materials Science; Metallurgy & Metallurgical Engineering; Mineralogy GA BJC17 UT WOS:000264675200040 ER PT S AU Clauset, A Tanner, HG Abdallah, CT Byrne, RH AF Clauset, Aaron Tanner, Herbert G. Abdallah, Chaouki T. Byrne, Raymond H. BE Loiseau, JJ Michiels, W Niculescu, SI Sipahi, R TI Controlling Across Complex Networks: Emerging Links Between Networks and Control SO TOPICS IN TIME DELAY SYSTEMS: ANALYSIS, ALGORITHMS AND CONTROL SE Lecture Notes in Control and Information Sciences LA English DT Proceedings Paper CT 7th IFAC Workshop on Time Delay Systems CY SEP 17-19, 2007 CL Nantes, FRANCE SP IFAC Tech Comm Linear Control Syst, IFAC Tech Comm Nonlinear Control Syst, IFAC Tech Comm Robust Control, GDR Macs, Reseau Jeunes Chercheuses & Chercheurs Automat, Minist Enseignement Superieur & Rech ID COMMUNICATION BANDWIDTH CONSTRAINTS; SMALL-WORLD NETWORKS; MULTIAGENT SYSTEMS; STABILITY; FEEDBACK; STABILIZATION; CONNECTIVITY; CONSENSUS; TOPOLOGY; INTERNET AB The presence of communication networks in the feedback path of a control system has led to new problems for control designers. Meanwhile, physicists, computer scientists, and mathematicians have been studying the formation and properties of physical networks under the heading of complex networks. Control engineers use a network model to facilitate controller design, while complex network theorists investigate networks to model their dynamics and growth. Despite the use of distinct analysis tools, network properties such as connectivity, efficiency, and robustness are common to both control and complex networks research. A question that naturally arises is whether ideas used by the complex network community can suggest new control design directions. In this chapter we review the tools from the network theoristOs arsenal to make them available to control engineers, and describe how ideas developed for complex network research can be exploited within a control systems framework. C1 [Clauset, Aaron] Santa Fe Inst, 1399 Hyde Pk Rd, Santa Fe, NM 87501 USA. [Tanner, Herbert G.] Univ New Mexico, Dept Mech Engn, MSC01 1150, Albuquerque, NM USA. [Abdallah, Chaouki T.] Univ New Mexico, Elect & Comp Engn Dept, MSC01 1150, Albuquerque, NM USA. [Byrne, Raymond H.] MS 1243, Sandia Natl Labs, Dept 5535, Data Anal & Exploitat, Albuquerque, NM USA. RP Clauset, A (reprint author), Santa Fe Inst, 1399 Hyde Pk Rd, Santa Fe, NM 87501 USA. EM aaronc@santafe.edu; tanner@unm.edu; chaouki@ece.unm.edu; rhbyrne@sandia.gov FU NSF [PHY-020090, 90447898, CNS 0626380]; United States Department of Energy [DE-AC04-94AL8500] FX Work supported in part by NSF grant no.PHY-0200909 Work supported in part by NSF grant no.0447898 Work supported in part by NSF grant no.CNS 0626380 Work supported by the United States Department of Energy under Contract DE-AC04-94AL8500 NR 51 TC 1 Z9 1 U1 0 U2 1 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0170-8643 BN 978-3-642-02896-0 J9 LECT NOTES CONTR INF PY 2009 VL 388 BP 329 EP + PG 4 WC Automation & Control Systems SC Automation & Control Systems GA BRB15 UT WOS:000282288500028 ER PT S AU Max, N Weinkauf, T AF Max, Nelson Weinkauf, Tino BE Hege, HC Polthier, K Scheuermann, G TI Critical Points of the Electric Field from a Collection of Point Charges SO TOPOLOGY-BASED METHODS IN VISUALIZATION II SE Mathematics and Visualization LA English DT Proceedings Paper CT 2nd Workshop on Topology-Based Methods in Visualization CY MAR 04-06, 2007 CL Kloster Nimbschen, GERMANY SP Univ Leipzig, Comp Sci Inst, Zuse Inst Berlin, Freie Univ Berlin, Inst Math AB The electric Field around a molecule is generated by the charge distribution of its constituents: positively charged atomic nuclei, which are well approximated by point charges, and negatively charged electrons, whose probability density distribution can be computed from quantum mechanics (Atoms in Molecules: A Quantum Theory, Clarendon, Oxford, 1990). For the purposes of molecular mechanics or dynamics, the charge distribution is often approximated by a collection of point charges, with either a single partial charge at each atomic nucleus position, representing both the nucleus and the electrons near it, or as several different point charges per atom. C1 [Max, Nelson] Lawrence Livermore Natl Lab, 7000 E Ave, Livermore, CA 94550 USA. [Weinkauf, Tino] Zuse Inst Berlin, D-14195 Berlin, Germany. RP Max, N (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave, Livermore, CA 94550 USA. EM max2@llnl.gov; weinkauf@zib.de NR 9 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 1612-3786 BN 978-3-540-88605-1 J9 MATH VIS PY 2009 BP 101 EP + DI 10.1007/978-3-540-88606-8_8 PG 2 WC Mathematics, Applied; Imaging Science & Photographic Technology SC Mathematics; Imaging Science & Photographic Technology GA BIW27 UT WOS:000263295100008 ER PT J AU Marchetti, F Bishop, J Xiu, LW Wyrobek, AJ AF Marchetti, Francesco Bishop, Jack Xiu Lowe Wyrobek, Andrew J. TI Chromosomal Mosaicism in Mouse Two-Cell Embryos after Paternal Exposure to Acrylamide SO TOXICOLOGICAL SCIENCES LA English DT Article ID UNSCHEDULED DNA-SYNTHESIS; HUMAN PREIMPLANTATION EMBRYOS; CONFINED PLACENTAL MOSAICISM; INDUCED CELL DEATH; MALE GERM-CELLS; MALE-MICE; HERITABLE TRANSLOCATIONS; CLEAVAGE DIVISIONS; MAILLARD REACTION; LOCUS MUTATIONS AB Chromosomal mosaicism in human preimplantation embryos is a common cause of spontaneous abortions, however, our knowledge of its etiology is limited. We used multicolor fluorescence in situ hybridization painting to investigate whether paternally transmitted chromosomal aberrations result in mosaicism in mouse two-cell embryos. Paternal exposure to acrylamide, an important industrial chemical also found in tobacco smoke and generated during the cooking process of starchy foods, produced significant increases in chromosomally defective two-cell embryos, however, the effects were transient primarily affecting the postmeiotic stages of spermatogenesis. Comparisons with our previous study of zygotes demonstrated similar frequencies of chromosomally abnormal zygotes and two-cell embryos suggesting that there was no apparent selection against numerical or structural chromosomal aberrations. However, the majority of affected two-cell embryos were mosaics showing different chromosomal abnormalities in the two blastomeric metaphases. Analyses of chromosomal aberrations in zygotes and two-cell embryos showed a tendency for loss of acentric fragments during the first mitotic division of embryogenesis, whereas both dicentrics and translocations apparently underwent proper segregation. These results suggest that embryonic development can proceed up to the end of the second cell cycle of development in the presence of abnormal paternal chromosomes and that even dicentrics can persist through cell division. The high incidence of chromosomally mosaic two-cell embryos suggests that the first mitotic division of embryogenesis is prone to missegregation errors and that paternally transmitted chromosomal abnormalities increase the risk of missegregation leading to embryonic mosaicism. C1 [Marchetti, Francesco; Xiu Lowe; Wyrobek, Andrew J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA. [Marchetti, Francesco; Xiu Lowe; Wyrobek, Andrew J.] Lawrence Livermore Natl Lab, Biosci Directorate, Livermore, CA 94550 USA. [Bishop, Jack] NIEHS, Res Triangle Pk, NC 27709 USA. [Xiu Lowe] Kaiser Permanente Med Grp Inc, Dept Psychiat, Hayward, CA 94545 USA. RP Marchetti, F (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM fmarchetti@lbl.gov OI Marchetti, Francesco/0000-0002-9435-4867 FU National Institute of Environmental Health Sciences through an NIEHS/DOE Interagency Agreement [Y01ES-10203-00]; California Tobacco Related Disease Research Program [13RT-140A] FX National Institute of Environmental Health Sciences through an NIEHS/DOE Interagency Agreement (grant number Y01ES-10203-00) to A. W. J. and F. M.; and California Tobacco Related Disease Research Program (grant number 13RT-140A) to F. M. NR 69 TC 8 Z9 8 U1 0 U2 4 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 1096-6080 J9 TOXICOL SCI JI Toxicol. Sci. PD JAN PY 2009 VL 107 IS 1 BP 194 EP 205 DI 10.1093/toxsci/kfn209 PG 12 WC Toxicology SC Toxicology GA 386NM UT WOS:000261889900019 PM 18930949 ER PT J AU Rebecca, M Hsing-Lin, W Jun, G Srinivas, I Gabriel, MA Jennifer, M Andrew, SP Bao, YP Chun-Chih, W Zhong, C Yuan, G Rashi, I AF Rebecca, Martin Hsing-Lin, Wang Jun, Gao Srinivas, Iyer Gabriel, Montano A. Jennifer, Martinez Andrew, Shreve P. Bao Yuping Chun-Chih, Wang Zhong, Chang Yuan, Gao Rashi, Iyer TI Impact of physicochemical properties of engineered fullerenes on key biological responses SO TOXICOLOGY AND APPLIED PHARMACOLOGY LA English DT Article DE Nanoparticle; Cell signaling; Apoptosis; Free radical; Caspases; Carboxyfullerene ID INDUCED OXIDATIVE STRESS; INDUCED APOPTOSIS; DRUG-DELIVERY; WATER; NANOPARTICLES; DERIVATIVES; CARBOXYFULLERENE; CELLS; CYTOTOXICITY; SYSTEMS AB Engineered fullerenes are widely integrated into several commercial and medical products and are now also being recognized as byproducts of many industrial activities. For most applications fullerenes have to be chemically modified. Surface modification of fullerenes can potentially impact their effect on biosystems. The purpose of the current Study was to establish criteria to correlate fullerene structure to biological responses. We report studies of cellular responses induced by three different types of fullerenes that provide varying chemical and physical properties such as electronic behavior, Solubility, and degree of agglomeration. Using a systematic and multipronged approach for material characterization and employing critical biological endpoints, we determined the impact of the physicochemical properties of fullerenes on cellular interactions. We examined the ability of these fullerenes to regulate intracellular oxidative stress, necrosis and apoptosis in human monocytic THP1 cells. Results indicate that the carboxylate derivatization of fullerenes was the determining factor in their ability to induce apoptosis. In contrast, the dispersion characteristics of fullerenes were found to be more relevant when considering their redox function. We also established a significant role for functionalization-dependent fullerene-regulation of the caspase proteases in the elicited responses. in addition, there was a notable increase in the level of several anti-oxidant enzymes. Collectively, the results clearly indicate that the physicochemical properties of fullerenes significantly influence the elicited biological response, thus impacting future applications. This study is an initial effort to lay the groundwork for routine correlation and predictive analysis on engineered fullerenes, thus expediting their use. Published by Elsevier Inc. C1 [Rebecca, Martin; Jun, Gao; Srinivas, Iyer; Rashi, Iyer] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, C PCS, Los Alamos, NM 87545 USA. [Gabriel, Montano A.; Jennifer, Martinez; Andrew, Shreve P.; Bao Yuping; Zhong, Chang] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, MPA CINT, Los Alamos, NM 87545 USA. [Yuan, Gao] Sensor Res & Dev Corp, Orono, ME 04473 USA. RP Rashi, I (reprint author), Los Alamos Natl Lab, Biosci Div, B-7,M888,TA 43 HRL-1, Los Alamos, NM 87545 USA. EM rashi@lanl.gov NR 41 TC 10 Z9 10 U1 2 U2 15 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0041-008X J9 TOXICOL APPL PHARM JI Toxicol. Appl. Pharmacol. PD JAN 1 PY 2009 VL 234 IS 1 BP 58 EP 67 DI 10.1016/j.taap.2008.08.021 PG 10 WC Pharmacology & Pharmacy; Toxicology SC Pharmacology & Pharmacy; Toxicology GA 397SL UT WOS:000262682300007 PM 18926839 ER PT B AU Sokolov, A Aranson, IS Kessler, JO Goldstein, RE AF Sokolov, Andrey Aranson, Igor S. Kessler, John O. Goldstein, Raymond E. BE AppertRolland, C Chevoir, F Gondret, P Lassarre, S Lebacque, JP Schreckenberg, M TI Large-Scale Collective Behavior of Swimming Microorganisms at High Concentrations SO TRAFFIC AND GRANULAR FLOW '07 LA English DT Proceedings Paper CT Conference on Traffic and Granular Flow CY JUN 20-22, 2007 CL Paris-Sub Univ, Orsay, FRANCE SP Reg Ile France, CEA, Minist Rech, CNRS, INRETS, DGA, European Phys Journal, Lab Phys Theor, Lab Fluids Automat Syst Therm, Grp Anal Ris Routier Gouvernance, Fac Sci Orsay HO Paris-Sub Univ ID TRANSITION; PARTICLES; PATTERNS; ORDER; MODEL; PH AB Suspensions of motile bacteria such as Bacillus subtilus or E. coli form a dynamical state exhibiting extended spatio-temporal organization at concentrations near the maximum, allowed by steric repulsion. The viscous liquid into which locomotive energy of individual microorganisms is transferred also carries interactions that drive the self-organization. The concentration dependence of collective swimming state correlation length is probed here with a novel technique (bacterial crowd control) that herds bacteria into condensed populations of adjustable concentration. For the free-standing thin-film geometry employed, the correlation length varies smoothly and monotonically through the transition from individual to collective behavior. Using insights from these experiments, we develop a specific model incorporating hydrodynamic interactions in thin-film geometries and show by numerical studies that it displays large scale persistently recurring vortices, as actually observed. C1 [Sokolov, Andrey; Aranson, Igor S.] Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. [Sokolov, Andrey] IIT, Chicago, IL 60616 USA. [Kessler, John O.] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA. [Goldstein, Raymond E.] Univ Cambridge, Dept Appl Math & Theoret Phys, Cambridge CB30WA, England. RP Sokolov, A (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Aranson, Igor/I-4060-2013 NR 28 TC 0 Z9 0 U1 2 U2 4 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY BN 978-3-540-77073-2 PY 2009 BP 455 EP + DI 10.1007/978-3-540-77074-9_51 PG 3 WC Operations Research & Management Science; Physics, Fluids & Plasmas; Physics, Mathematical; Transportation Science & Technology SC Operations Research & Management Science; Physics; Transportation GA BKN08 UT WOS:000268634700051 ER PT J AU Brush, SG AF Brush, Stephen G. TI The Revival of Natural Selection in Anglo-American Evolutionary Biology 1930-1970 SO TRANSACTIONS OF THE AMERICAN PHILOSOPHICAL SOCIETY LA English DT Review ID SHIFTING-BALANCE THEORY; FISHERS FUNDAMENTAL THEOREM; ABO BLOOD GROUPS; POPULATION-GENETICS; DROSOPHILA-PSEUDOOBSCURA; NEUTRAL CHARACTERS; RANDOM DRIFT; DOBZHANSKY,THEODOSIUS GENETICS; HISTORICAL-PERSPECTIVE; INTERNATIONAL-CONGRESS C1 [Brush, Stephen G.] Univ Maryland, University Pk, PA USA. [Brush, Stephen G.] Lawrence Livermore Natl Lab, Livermore, CA USA. [Brush, Stephen G.] Harvard Univ, Cambridge, MA 02138 USA. RP Brush, SG (reprint author), Univ Maryland, University Pk, PA USA. NR 781 TC 1 Z9 1 U1 0 U2 1 PU AMER PHILOSOPHICAL SOC PI PHILADELPHIA PA 104 SOUTH FIFTH ST, PHILADELPHIA, PA 19106-3387 USA SN 0065-9746 EI 2325-9264 J9 T AM PHILOS SOC JI Trans. Am. Philos. Soc. PY 2009 VL 99 BP 1 EP + PN 3 PG 167 WC Humanities, Multidisciplinary SC Arts & Humanities - Other Topics GA 493BX UT WOS:000269709200001 ER EF