FN Thomson Reuters Web of Science™ VR 1.0 PT J AU Nunoura, T Inagaki, F Delwiche, ME Colwell, FS Takai, K AF Nunoura, Takuro Inagaki, Fumio Delwiche, Mark E. Colwell, Frederick S. Takai, Ken TI Subseafloor Microbial Communities in Methane Hydrate-Bearing Sediment at Two Distinct Locations (ODP Leg204) in the Cascadia Margin SO MICROBES AND ENVIRONMENTS LA English DT Article DE subseafloor biosphere; Ocean Drilling Program; the Cascadia Margin; methanogen; methane hydrate ID DEEP MARINE-SEDIMENTS; SP-NOV.; BIOGEOCHEMICAL PROCESSES; BACTERIAL-POPULATIONS; SUBSURFACE SEDIMENTS; MOLECULAR ANALYSIS; NANKAI TROUGH; SEA SEDIMENTS; GAS HYDRATE; PERU MARGIN AB The prokaryotic communities in deep subseafloor sediment collected during Ocean Drilling Program (ODP) Leg 204 from the South Hydrate Ridge (SHR) on the Cascadia Margin were analyzed by 16S rRNA gene clone sequencing and a fluorescent quantitative PCR technique. The microbial communities came from sites with contrasting geological characteristics on the SHR: sites 1244 and 1245 (located on the flank of the ridge, hydrate-rich sediment) and site 1251 (located on the slope basin of SHR, hydrate-poor sediment). The overall copy numbers of the 16S rRNA gene, and the proportion of archaeal 16S rRNA gene in all 16S rRNA gene community in sediment were larger on the slope basin than on the flank of the SHR. Archaeal community structure around the sulfate-methane transition zone at site 125 1 (4.5 mbsf) was intensively investigated using two different PCR primer sets. A relatively abundant distribution of the 16S rRNA gene sequences related to mesophilic methanogen of the genus Methanoculleus was identified at a depth of 43.2 mbsf, and suggested that the methanogens occur in relatively shallow zones of sediment. This study demonstrated that the subseafloor microbial communities shown by 16S rRNA gene clone analyses were not directly associated with subseafloor methane hydrate deposits. C1 [Nunoura, Takuro; Inagaki, Fumio; Takai, Ken] Japan Agcy Marine Earth Sci & Technol, Extremobiosphere Res Ctr, Subground Animalcule Retrieval SUGAR Program, Yokosuka, Kanagawa 2370061, Japan. [Delwiche, Mark E.; Colwell, Frederick S.] Idaho Natl Lab, Dept Biol Sci, Idaho Falls, ID 83415 USA. [Colwell, Frederick S.] Oregon State Univ, Coll Ocean & Atmospher Sci, Corvallis, OR 97331 USA. RP Nunoura, T (reprint author), Japan Agcy Marine Earth Sci & Technol, Extremobiosphere Res Ctr, Subground Animalcule Retrieval SUGAR Program, 2 15 Natsushima Cho, Yokosuka, Kanagawa 2370061, Japan. EM takuron@jamstec.go.jp FU U.S. National Science Foundation; Joint Oceanographic Institutions, Inc. FX We thank the personnel of Leg 204 shipboard scientific parties for sampling sediments. ODP is sponsored by the U.S. National Science Foundation and participating countries under the management of Joint Oceanographic Institutions, Inc. NR 46 TC 22 Z9 23 U1 1 U2 15 PU JAPANESE SOC MICROBIAL ECOLOGY, DEPT BIORESOURCE SCIENCE PI IBARAKI PA C/O DR. HIROYUKI OHTA, SEC, IBARAKI UNIV COLLEGE OF AGRICULT, AMI-MACHI, IBARAKI, JAPAN SN 1342-6311 J9 MICROBES ENVIRON JI Microbes Environ. PY 2008 VL 23 IS 4 BP 317 EP 325 DI 10.1264/jsme2.ME08514 PG 9 WC Biotechnology & Applied Microbiology; Microbiology SC Biotechnology & Applied Microbiology; Microbiology GA 376MN UT WOS:000261187800009 PM 21558725 ER PT S AU Auciello, O Sumant, A Hiller, J KabiuS, B Srinivasan, S AF Auciello, Orlando Sumant, Anirudha Hiller, Jon KabiuS, Bernd Srinivasan, Sudarsan BE LaVan, DA DaSilva, MG Spearing, SM Vengallatore, S TI Science and technology of piezoelectric/diamond hybrid heterostructures for high performance MEMS/NEMS devices SO MICROELECTROMECHANICAL SYSTEMS - MATERIALS AND DEVICES SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on Microelectromechanical Systems - Materials and Devices held at the 2007 MRS Fall Meeting CY NOV 26-28, 2007 CL Boston, MA SP Mat Res Soc ID DIAMOND THIN-FILMS; ULTRANANOCRYSTALLINE DIAMOND; FABRICATION; DEPOSITION; MEMS AB Most current micro/nanoelectromechanical systems (MEMS/NEMS) are based on silicon. However, silicon exhibits relatively poor mechanical/tribological properties, compromising applications to some devices. Diamond films with superior mechanical/tribological properties provide an excellent alternative platform material. Ultrananocrystalline diamond (UNCD (R)) in film form with 2-5 nm grains exhibits excellent mechanical and tribological properties for high-performance MEMS/NEMS devices. Concurrently, piezoelectric Pb(ZrxTi1-x)O-3 (PZT) films provide high sensitivity/low electrical noise for sensing/high-force actuation at relatively low voltages. Therefore, integration of PZT and UNCD films provides a high-performance platform for advanced MEMS/NEMS devices. This paper describes the bases of such integration and demonstration of low voltage piezoactuated hybrid PZT/UNCD cantilevers. C1 [Auciello, Orlando] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Auciello, O (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Hiller, Jon/A-2513-2009 OI Hiller, Jon/0000-0001-7207-8008 NR 16 TC 1 Z9 1 U1 0 U2 3 PU MATERIALS RESEARCH SOCIETY PI WARRENDALE PA 506 KEYSTONE DRIVE, WARRENDALE, PA 15088-7563 USA SN 0272-9172 BN 978-1-55899-990-9 J9 MATER RES SOC SYMP P PY 2008 VL 1052 BP 259 EP 263 PG 5 WC Engineering, Electrical & Electronic; Engineering, Mechanical; Materials Science, Characterization & Testing SC Engineering; Materials Science GA BHP16 UT WOS:000255102800039 ER PT J AU Knorovsky, GA Semak, VV AF Knorovsky, G. A. Semak, V. V. BE Zhou, Y TI Fundamentals of fusion microwelding SO MICROJOINING AND NANOJOINING SE Woodhead Publishing in Materials LA English DT Article; Book Chapter ID SURFACE-TENSION; WELDING ARC; LASER-PULSE; FLUID-FLOW; METAL; VAPORIZATION; POOL; EVOLUTION C1 [Knorovsky, G. A.] Sandia Natl Labs, Joining & Coating Dept, Albuquerque, NM 87185 USA. [Semak, V. V.] Penn State Univ, Electroopt Ctr, Freeport, PA USA. RP Knorovsky, GA (reprint author), Sandia Natl Labs, Joining & Coating Dept, POB 5800, Albuquerque, NM 87185 USA. EM gaknoro@sandia.gov; vxs21@psu.edu NR 51 TC 1 Z9 1 U1 0 U2 0 PU WOODHEAD PUBL LTD PI CAMBRIDGE PA ABINGTON HALL ABINGTON, CAMBRIDGE CB1 6AH, CAMBS, ENGLAND BN 978 1 84569 179 0 J9 WOODHEAD PUBL MATER PY 2008 BP 51 EP 90 DI 10.1533/9781845694043.1.51 D2 10.1533/9781845694043 PG 40 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Science & Technology - Other Topics; Materials Science GA BQZ11 UT WOS:000282179800004 ER PT J AU Miyamoto, I Knorovsky, GA AF Miyamoto, I. Knorovsky, G. A. BE Zhou, Y TI Laser microwelding SO MICROJOINING AND NANOJOINING SE Woodhead Publishing in Materials LA English DT Article; Book Chapter ID TRANSPARENT MATERIALS; HEAT-TRANSFER; WELDING TECHNIQUE; PULSES; BEAM; PENETRATION; EFFICIENCY; RADIATION; KEYHOLE C1 [Miyamoto, I.] Osaka Univ, Suita, Osaka 5650871, Japan. [Knorovsky, G. A.] Sandia Natl Labs, Joining & Coating Dept, Albuquerque, NM 87185 USA. RP Miyamoto, I (reprint author), Osaka Univ, 2-1 Yamada Oka, Suita, Osaka 5650871, Japan. EM isamu.miyamoto@ares.eonet.ne.jp; gaknoro@sandia.gov NR 97 TC 5 Z9 5 U1 0 U2 1 PU WOODHEAD PUBL LTD PI CAMBRIDGE PA ABINGTON HALL ABINGTON, CAMBRIDGE CB1 6AH, CAMBS, ENGLAND BN 978 1 84569 179 0 J9 WOODHEAD PUBL MATER PY 2008 BP 345 EP 417 DI 10.1533/9781845694043.2.345 D2 10.1533/9781845694043 PG 73 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Science & Technology - Other Topics; Materials Science GA BQZ11 UT WOS:000282179800015 ER PT B AU Knorovsky, GA Dorfmuller, T Dilthey, U Woeste, K AF Knorovsky, G. A. Dorfmueller, T. Dilthey, U. Woeste, K. BE Zhou, Y TI Electron beam microwelding SO MICROJOINING AND NANOJOINING SE Woodhead Publishing in Materials LA English DT Article; Book Chapter C1 [Knorovsky, G. A.] Sandia Natl Labs, Livermore, CA 94550 USA. [Dorfmueller, T.; Dilthey, U.; Woeste, K.] Rhein Westfal TH Aachen, Welding & Joining Inst ISF, Aachen, Germany. [Knorovsky, G. A.] Sandia Natl Labs, Joining & Coating Dept, Albuquerque, NM 87185 USA. RP Knorovsky, GA (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA. EM gaknoro@sandia.gov; do@isf.rwth-aachen.de NR 12 TC 0 Z9 0 U1 1 U2 1 PU WOODHEAD PUBL LTD PI CAMBRIDGE PA ABINGTON HALL ABINGTON, CAMBRIDGE CB1 6AH, CAMBS, ENGLAND BN 978 1 84569 179 0 J9 WOODHEAD PUBL MATER PY 2008 BP 418 EP 472 DI 10.1533/9781845694043.2.418 D2 10.1533/9781845694043 PG 55 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Science & Technology - Other Topics; Materials Science GA BQZ11 UT WOS:000282179800016 ER PT B AU Brochu, M Loehman, RE AF Brochu, M. Loehman, R. E. BE Zhou, Y TI Hermetic sealing of solid oxide fuel cells SO MICROJOINING AND NANOJOINING SE Woodhead Publishing in Materials LA English DT Article; Book Chapter ID CRYSTALLIZATION KINETICS; COMPRESSIVE SEALS; GLASS COMPOSITES; SOFC STACKS; MG; INTERCONNECTS; ELECTROLYTE; BARIUM; ZN C1 [Brochu, M.] McGill Univ, Min & Mat Engn Dept, Montreal, PQ H3A 2B2, Canada. [Loehman, R. E.] Sandia Natl Labs, Adv Mat Labs, Albuquerque, NM 87106 USA. RP Brochu, M (reprint author), McGill Univ, Min & Mat Engn Dept, 3610 Univ St, Montreal, PQ H3A 2B2, Canada. EM mathieu.brochu@mcgill.ca NR 50 TC 0 Z9 0 U1 0 U2 0 PU WOODHEAD PUBL LTD PI CAMBRIDGE PA ABINGTON HALL ABINGTON, CAMBRIDGE CB1 6AH, CAMBS, ENGLAND BN 978 1 84569 179 0 J9 WOODHEAD PUBL MATER PY 2008 BP 718 EP 740 DI 10.1533/9781845694043.3.718 D2 10.1533/9781845694043 PG 23 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Science & Technology - Other Topics; Materials Science GA BQZ11 UT WOS:000282179800025 ER PT S AU Liliental-Weber, Z Kryliouk, O Park, HJ Mangum, J Anderson, T Schaff, W AF Liliental-Weber, Z. Kryliouk, O. Park, H. J. Mangum, J. Anderson, T. Schaff, W. BE Cullis, AG Midgley, PA TI InN Nanorods and Epilayers: Similarities and Differences SO MICROSCOPY OF SEMICONDUCTING MATERIALS 2007 SE Springer Proceedings in Physics LA English DT Proceedings Paper CT 15th Conference on Microscopy of Semiconducting Materials CY APR 02-05, 2007 CL Univ Cambridge, Cambridge, ENGLAND HO Univ Cambridge AB Transmission electron microscopy was applied to study InN nanorods grown on the a-, c- and r-plane of Al2O3, and (111) Si Substrates by non-catalytic, template-free hydride metal-organic vapor phase epitaxy (H-MOVPE). Single crystal nanorod growth was obtained on all substrates. However, the shape of the nanorods varied depending on the Substrate used. For example, nanorods grown on r-plane sapphire and (111) Si have sharp tips. In contrast, growth on a- and c- planes of Al2O3 results in flat tips with clear facets on their sides. The structural quality of these nanorods and their growth polarity are compared to crystalline quality, surface roughness, defects and growth polarity of InN layers grown by MBE on the same planes of Al2O3. C1 [Liliental-Weber, Z.] Univ Calif Berkeley, Lawrence Berkeley Lab, M-S 62-203, Berkeley, CA 94720 USA. [Kryliouk, O.; Park, H. J.; Mangum, J.; Anderson, T.] Univ Florida, Dept Chem Engn, Gainesville, FL 32611 USA. [Schaff, W.] Cornell Univ, Dept Elect & Comp Engn, Ithaca, NY 14853 USA. RP Liliental-Weber, Z (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, M-S 62-203, Berkeley, CA 94720 USA. FU U.S. Department of Energy [DE-AC02-05CH11231]; NSF [CTS-031178, DMR 0400416]; NASA Kennedy Space Center [10-316, N00014-98-1-04] FX This work is supported by the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. The work at UF is partially supported by NSF (CTS-031178) and NASA Kennedy Space Center Grant NAG 10-316, ONR (N00014-98-1-04) and NSF DMR 0400416. NR 2 TC 0 Z9 0 U1 0 U2 4 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0930-8989 BN 978-1-4020-8614-4 J9 SPRINGER PROC PHYS PY 2008 VL 120 BP 37 EP + PG 2 WC Nanoscience & Nanotechnology; Microscopy; Physics, Condensed Matter SC Science & Technology - Other Topics; Microscopy; Physics GA BIW87 UT WOS:000263468800008 ER PT S AU Ubaldi, F Pozzi, G Fazzini, PF Beleggia, M AF Ubaldi, F. Pozzi, G. Fazzini, P. F. Beleggia, M. BE Cullis, AG Midgley, PA TI Three-Dimensional Field Models for Reverse Biased P-N Junctions SO MICROSCOPY OF SEMICONDUCTING MATERIALS 2007 SE Springer Proceedings in Physics LA English DT Proceedings Paper CT 15th Conference on Microscopy of Semiconducting Materials CY APR 02-05, 2007 CL Univ Cambridge, Cambridge, ENGLAND HO Univ Cambridge ID OPTICAL PHASE-SHIFTS AB In order to obtain reliable quantitative information on the electrostatic field associated with reverse-biased p-n junctions and on the distribution of dopants, the physics of the so-called "dead layer" and the influence of charged oxide layers are of paramount importance. For this purpose, experimental observations near the edge of a TEM sample can be useful. Under these conditions, however, phase computations required to interpret the experimental results are very challenging as the problem is intrinsically three-dimensional. In order to cope with this problem, a mixed analytical-numerical approach is presented and discussed. C1 [Ubaldi, F.] Univ Bologna, Phys Dept CNISM, V le Berti Pichat 6-2, I-40127 Bologna, Italy. [Fazzini, P. F.] CEMES CNRS, F-31055 Toulouse, France. [Beleggia, M.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Ubaldi, F (reprint author), Univ Bologna, Phys Dept CNISM, V le Berti Pichat 6-2, I-40127 Bologna, Italy. RI FAZZINI, Pier Francesco/B-2645-2012 OI FAZZINI, Pier Francesco/0000-0002-4307-6481 FU MIUR, FIRB [RBAU01M97L]; U.S. Department of Energy, Basic Energy Sciences [DE-AC02-98CH10886] FX Financial support was provided by MIUR, FIRB funding RBAU01M97L, and by the U.S. Department of Energy, Basic Energy Sciences, under contract number DE-AC02-98CH10886. NR 8 TC 0 Z9 0 U1 0 U2 1 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0930-8989 BN 978-1-4020-8614-4 J9 SPRINGER PROC PHYS PY 2008 VL 120 BP 383 EP + PG 2 WC Nanoscience & Nanotechnology; Microscopy; Physics, Condensed Matter SC Science & Technology - Other Topics; Microscopy; Physics GA BIW87 UT WOS:000263468800082 ER PT J AU Anderson-Cook, CM Graves, T Hengartner, N Klamann, R Wiedlea, ACK Wilson, AG Anderson, G Lopez, G AF Anderson-Cook, Christine M. Graves, Todd Hengartner, Nicolas Klamann, Richard Wiedlea, Andrew C. K. Wilson, Alyson G. Anderson, Greg Lopez, George TI Reliability Modeling using Both System Test and Quality Assurance Data SO MILITARY OPERATIONS RESEARCH LA English DT Article ID COMPONENT TEST DATA; BAYESIAN-ESTIMATION; COMPLEX-SYSTEMS; SERIES SYSTEMS; BINOMIAL SUBSYSTEMS; CONFIDENCE LIMITS; INTERVALS AB A system with several components may undergo full system pass/fail testing as well as quality assurance testing at the single component level. The component tests are informative about system reliability, although they measure different things than the full system tests. We present a Bayesian framework for integrating the two types of test data for better reliability estimates. Our formulation allows the reliability to depend on covariates such as age. One result of the inference is a better understanding of the relationship between component tests and system performance. We illustrate the ideas using a small subsystem of a larger (proprietary) system. C1 [Anderson-Cook, Christine M.; Hengartner, Nicolas; Klamann, Richard; Wiedlea, Andrew C. K.; Wilson, Alyson G.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Anderson-Cook, CM (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. EM c-and-cook@lanl.org OI Wilson, Alyson/0000-0003-1461-6212 NR 31 TC 11 Z9 12 U1 0 U2 1 PU MILITARY OPERATIONS RESEARCH SOC PI ALEXANDRIA PA 1703 N BEAUREGARD ST, STE 450, ALEXANDRIA, VA 22311-1717 USA SN 0275-5823 J9 MIL OPER RES JI Mil. Oper. Res. PY 2008 VL 13 IS 3 BP 5 EP 18 PG 14 WC Operations Research & Management Science SC Operations Research & Management Science GA 383AX UT WOS:000261647600001 ER PT S AU Datesman, A Pearson, J Wang, G Yefremenko, V Divan, R Downes, T Chang, C McMahon, J Meyer, S Carlstrom, J Logan, D Perera, T Wilson, G Novosad, V AF Datesman, Aaron Pearson, John Wang, Gensheng Yefremenko, Volodymyr Divan, Ralu Downes, Thomas Chang, Clarence McMahon, Jeff Meyer, Stephan Carlstrom, John Logan, Daniel Perera, Thushara Wilson, Grant Novosad, Valentyn BE Duncan, WD Holland, WS Withington, S Zmuidzinas, J TI Frequency selective bolometer development at Argonne National Laboratory SO MILLIMETER AND SUBMILLIMETER DETECTORS AND INSTRUMENTATION FOR ASTONOMY IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Millimeter and Submillimeter Detectors and Instrumentation for Astonomy IV CY JUN 26-28, 2008 CL Marseille, FRANCE SP SPIE, SPIE Europe DE bolometer; low temperature detector; membrane; millimeter-wave; multispectral; spectral energy distribution; stability; submillimeter galaxy; superconducting thin film; transition edge sensor ID ELECTROTHERMAL FEEDBACK; HIGH-REDSHIFT; GALAXIES; READOUT AB We discuss the development, at Argonne National Laboratory, of a four-pixel camera suitable for photometry of distant dusty galaxies located by Spitzer and SCUBA, and for study of other millimeter-wave sources such as ultra-luminous infrared galaxies, the Sunyaev-Zeldovich (SZ) effect in clusters, and galactic dust. Utilizing Frequency Selective Bolometers (FSBs) with superconducting Transition-Edge Sensors (TESs), each of the camera's four pixels is sensitive to four colors, with frequency bands centered approximately at 150, 220, 270, and 360 GHz. The current generation of these devices utilizes proximity effect superconducting bilayers of Mo/Au or Ti/Au for TESs, along with frequency selective circuitry on membranes of silicon nitride I cm across and I micron thick. The operational properties of these devices are determined by this circuitry, along with thermal control structures etched into the membranes. These etched structures do not perforate the membrane, so that the device is both comparatively robust mechanically and carefully tailored in terms of its thermal transport properties. In this paper, we report on development of the superconducting bilayer TES technology and characterization of the FSB stacks. This includes the use of new materials, the design and testing of thermal control structures, the introduction of desirable thermal properties using buried layers of crystalline silicon underneath the membrane, detector stability control, and optical and thermal test results. The scientific motivation, FSB design, FSB fabrication, and measurement results are discussed. C1 [Datesman, Aaron; Pearson, John; Wang, Gensheng; Yefremenko, Volodymyr; Novosad, Valentyn] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Datesman, A (reprint author), 9700 S Cass Ave, Argonne, IL 60439 USA. EM datesman@anl.gov RI Novosad, Valentyn/C-2018-2014; Novosad, V /J-4843-2015 NR 22 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 978-0-8194-7230-4 J9 P SOC PHOTO-OPT INS PY 2008 VL 7020 AR 702029 DI 10.1117/12.790034 PG 13 WC Astronomy & Astrophysics; Instruments & Instrumentation; Optics SC Astronomy & Astrophysics; Instruments & Instrumentation; Optics GA BIR58 UT WOS:000262259800059 ER PT B AU Peterson, KA Knudson, RT Garcia, EJ Patel, KD Okandan, M Ho, CK James, CD Rohde, SB Rohrer, BR Smith, F Zawicki, LR Wroblewski, BD AF Peterson, K. A. Knudson, R. T. Garcia, E. J. Patel, K. D. Okandan, M. Ho, C. K. James, C. D. Rohde, S. B. Rohrer, B. R. Smith, F. Zawicki, L. R. Wroblewski, B. D. BE Napieralski, A TI LTCC in microelectronics, microsystems, and sensors SO MIXDES 2008: PROCEEDINGS OF THE 15TH INTERNATIONAL CONFERENCE ON MIXED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS LA English DT Proceedings Paper CT 15th International Conference on Mixed Design of Integrated Circuits and Systems CY JUN 19-21, 2008 CL Poznan, POLAND SP Technol Univ Lodz, Dept Microelect & Comp Sci, Poznan Univ Technol, Chair Comp Engn, Warsaw Univ Technol, Inst Microelect & Optoelect, IEEE Poland Sect, CAS & ED Chapter, Polish Acad Sci, Sect Microelect, Polish Acad Sci, Comm Elect & Telecommun, Sect Signals, Elect Circuits & Syst DE LTCC; microfluidic; microsystem; packaging; FTTF ID TEMPERATURE COFIRED CERAMICS; BURIED RESISTORS; MICROSTRUCTURE; SYSTEM AB Low Temperature Cofired Ceramic (LTCC) is one of the most significant developments in microelectronics, microsystems, and sensors integration. The formerly-flat board technology involves a materials and process suite that lends itself to shaped and stacked 3D packaging and, within the board, enclosed unfilled volumes and unconventional components. The documentation of LTCC microsystem and sensor applications is growing rapidly in the literature. This paper will discuss accomplishments at Sandia in RF, microfluidics, gas handling, microsystems, and sensor applications. Highlighted areas include Radar MCMs, biological microsystems, smart channels, and new sensor geometries including rolled ceramic tubular substrates. Unconventional processing techniques for creating unfilled open volumes such as SVMs, screeding, and use of inserts with and without prior cavity definition will be discussed. New applications, such as the use of magnetic bead capture, incorporated smart channels, microthrusters, micro-NMR devices, radiation detectors, IMS drift tubes, optical microphones and optical switch packaging and improved performance from Full Tape Thickness Features (FTTF) will also be discussed. C1 [Peterson, K. A.; Knudson, R. T.; Garcia, E. J.; Patel, K. D.; Okandan, M.; Ho, C. K.; James, C. D.; Rohde, S. B.; Rohrer, B. R.; Wroblewski, B. D.] Sandia Labs, Albuquerque, NM USA. RP Peterson, KA (reprint author), Sandia Labs, Albuquerque, NM USA. RI Patel, Kamlesh/A-9728-2009; Napieralski, Andrzej/M-1621-2016 OI Napieralski, Andrzej/0000-0002-3844-3435 NR 46 TC 6 Z9 7 U1 0 U2 4 PU TECHNICAL UNIV LODZ PI LODZ PA DEPT MICROELECTRONICS & COMPUTER SCIENCE, AL POLITECHNIKI 11, LODZ, 90-924, POLAND BN 978-83-922632-7-2 PY 2008 BP 23 EP 37 PG 15 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BIF55 UT WOS:000259117200002 ER PT B AU Wang, LS To, DL Cai, JF AF Wang, Lihshing To, Duc-Le Cai, Jinfa BE Li, G Wang, L TI Interdisciplinary Research in the Era of Globalization PREFACE SO MODEL MINORITY MYTH REVISITED: AN INTERDISCIPLINARY APPROACH TO DEMYSTIFYING ASIAN AMERICAN EDUCATIONAL EXPERIENCES SE Chinese American Educational Research and Development Association Book Series LA English DT Editorial Material; Book Chapter C1 [Wang, Lihshing] Univ Cincinnati, Div Educ Studies & Leadership, Cincinnati, OH 45221 USA. [Cai, Jinfa] Univ Delaware, Newark, DE 19716 USA. [To, Duc-Le] US DOE, Inst Sci Educ, Washington, DC 20585 USA. US DOE, OERI, Washington, DC 20585 USA. RP Wang, LS (reprint author), Univ Calif Los Angeles, Los Angeles, CA 90095 USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU INFORMATION AGE PUBLISHING-IAP PI CHARLOTTE PA PO BOX 79049, CHARLOTTE, NC 28271-7047 USA BN 978-1-59311-950-8 J9 CHIN AM EDUC RES DEV PY 2008 BP XIII EP XV PG 3 WC Education & Educational Research; Ethnic Studies SC Education & Educational Research; Ethnic Studies GA BKF71 UT WOS:000267987800001 ER PT B AU Wang, LS To, DL AF Wang, Lihshing To, Duc-Le BE Li, G Wang, L TI METHODOLOGICAL CONFOUNDING IN CROSS-CULTURAL RESEARCH Issues of Instrumentation and Analysis in Demystifying the Asian Success Formula SO MODEL MINORITY MYTH REVISITED: AN INTERDISCIPLINARY APPROACH TO DEMYSTIFYING ASIAN AMERICAN EDUCATIONAL EXPERIENCES SE Chinese American Educational Research and Development Association Book Series LA English DT Article; Book Chapter ID DEMAND CHARACTERISTICS; LIKERT SCALES; ACHIEVEMENT C1 [Wang, Lihshing] Univ Cincinnati, Div Educ Studies & Leadership, Cincinnati, OH 45221 USA. [Wang, Lihshing] Ctr Appl Linguist, Washington, DC USA. [Wang, Lihshing] Amer Inst Res, Palo Alto, CA USA. [Wang, Lihshing] Natl Chung Cheng Univ, Taipei, Taiwan. [Wang, Lihshing] Amer Educ Res Assoc, Washington, DC USA. [To, Duc-Le] US DOE, Inst Sci Educ, Washington, DC 20585 USA. [To, Duc-Le] US DOE, OERI, Washington, DC 20585 USA. [To, Duc-Le] Univ Penn, CPRE, Philadelphia, PA 19104 USA. [To, Duc-Le] Univ Washington, Teacher Compensat Project, Ctr Study Teaching & Policy CTP, Seattle, WA 98195 USA. [To, Duc-Le] Natl Acad Sci, Natl Study Educ Finance Equ & Prod, Washington, DC USA. [To, Duc-Le] RAND Corp, Study Costs Class Size Reduct, Santa Monica, CA 90406 USA. RP Wang, LS (reprint author), Univ Calif Los Angeles, Los Angeles, CA 90095 USA. NR 26 TC 1 Z9 1 U1 0 U2 0 PU INFORMATION AGE PUBLISHING-IAP PI CHARLOTTE PA PO BOX 79049, CHARLOTTE, NC 28271-7047 USA BN 978-1-59311-950-8 J9 CHIN AM EDUC RES DEV PY 2008 BP 289 EP 296 PG 8 WC Education & Educational Research; Ethnic Studies SC Education & Educational Research; Ethnic Studies GA BKF71 UT WOS:000267987800016 ER PT B AU To, DL AF To, Duc-Le BE Li, G Wang, L TI METHODOLOGICAL ISSUES IN MODEL MINORITY RESEARCH Where Do We Go from Here? SO MODEL MINORITY MYTH REVISITED: AN INTERDISCIPLINARY APPROACH TO DEMYSTIFYING ASIAN AMERICAN EDUCATIONAL EXPERIENCES SE Chinese American Educational Research and Development Association Book Series LA English DT Article; Book Chapter ID AMERICAN-COLLEGE STUDENTS; ASIAN-AMERICAN; ACADEMIC-ACHIEVEMENT; ETHNIC-DIFFERENCES; WHITE AMERICANS; HIGH-SCHOOL; STEREOTYPES; ADOLESCENTS; DEPRESSION; PREDICTORS C1 [To, Duc-Le] US DOE, Inst Sci Educ, Washington, DC 20585 USA. [To, Duc-Le] US DOE, OERI, Washington, DC 20585 USA. [To, Duc-Le] Univ Penn, CPRE, Philadelphia, PA 19104 USA. [To, Duc-Le] Univ Washington, Teacher Compensat Project, Ctr Study Teaching & Policy CTP, Seattle, WA 98195 USA. [To, Duc-Le] Natl Acad Sci, Natl Study Finance Equ & Prod, Washington, DC USA. [To, Duc-Le] RAND Corp, Study Costs Class Size Reduct, Santa Monica, CA 90406 USA. RP To, DL (reprint author), US DOE, Inst Sci Educ, Washington, DC 20585 USA. NR 35 TC 0 Z9 0 U1 0 U2 0 PU INFORMATION AGE PUBLISHING-IAP PI CHARLOTTE PA PO BOX 79049, CHARLOTTE, NC 28271-7047 USA BN 978-1-59311-950-8 J9 CHIN AM EDUC RES DEV PY 2008 BP 299 EP 313 PG 15 WC Education & Educational Research; Ethnic Studies SC Education & Educational Research; Ethnic Studies GA BKF71 UT WOS:000267987800017 ER PT S AU Liese, EA Ferrari, ML VanOsdol, J Tucker, D Gemmen, RS AF Liese, Eric A. Ferrari, Mario Luigi VanOsdol, John Tucker, David Gemmen, Randall S. BE Bove, R Ubertini, S TI Modeling of Combined SOFC and Turbine Power Systems SO MODELING SOLID OXIDE FUEL CELLS: METHODS, PROCEDURES AND TECHNIQUES SE Fuel Cells and Hydrogen Energy LA English DT Article; Book Chapter C1 [Liese, Eric A.; VanOsdol, John; Tucker, David; Gemmen, Randall S.] US DOE, Natl Energy Technol Lab, Morgantown, WV 26507 USA. [Ferrari, Mario Luigi] Univ Genoa, DiMSET Thermochem Power Grp, I-16145 Genoa, Italy. RP Liese, EA (reprint author), US DOE, Natl Energy Technol Lab, POB 880, Morgantown, WV 26507 USA. NR 21 TC 3 Z9 3 U1 0 U2 1 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 1931-5058 BN 978-1-4020-6994-9 J9 FUEL CELL HYDRO ENER PY 2008 VL 1 BP 239 EP 268 DI 10.1007/978-1-4020-6995-6_8 D2 10.1007/978-1-4020-6995-6 PG 30 WC Electrochemistry; Energy & Fuels; Materials Science, Ceramics; Materials Science, Multidisciplinary SC Electrochemistry; Energy & Fuels; Materials Science GA BKL01 UT WOS:000268399000008 ER PT S AU Gemmen, RS AF Gemmen, Randall S. BE Bove, R Ubertini, S TI Dynamic Modeling of Fuel Cells SO MODELING SOLID OXIDE FUEL CELLS: METHODS, PROCEDURES AND TECHNIQUES SE Fuel Cells and Hydrogen Energy LA English DT Article; Book Chapter ID RADIATION HEAT-TRANSFER; PLANAR SOFC; LOAD; PERFORMANCE; SIMULATION; IMPEDANCE; TRANSPORT; CATHODES; BEHAVIOR; ANODE C1 US DOE, Natl Energy Technol Lab, Morgantown, WV 26507 USA. RP Gemmen, RS (reprint author), US DOE, Natl Energy Technol Lab, POB 880, Morgantown, WV 26507 USA. NR 34 TC 2 Z9 2 U1 0 U2 0 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 1931-5058 BN 978-1-4020-6994-9 J9 FUEL CELL HYDRO ENER PY 2008 VL 1 BP 269 EP 322 DI 10.1007/978-1-4020-6995-6_9 D2 10.1007/978-1-4020-6995-6 PG 54 WC Electrochemistry; Energy & Fuels; Materials Science, Ceramics; Materials Science, Multidisciplinary SC Electrochemistry; Energy & Fuels; Materials Science GA BKL01 UT WOS:000268399000009 ER PT J AU Gullett, PM Horstemeyer, MF Baskes, MI Fang, H AF Gullett, P. M. Horstemeyer, M. F. Baskes, M. I. Fang, H. TI A deformation gradient tensor and strain tensors for atomistic simulations SO MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING LA English DT Article ID EMBEDDED-ATOM METHOD; MOLECULAR-DYNAMICS; DEFECTS; SOLIDS; METALS AB A kinematical algorithm is proposed for the construction of strain tensors from atomistic simulation data. Local strain tensors such as the Almansi and Green strain tensors suitable for use in large deformation molecular dynamics/statics simulations are computed directly from a discrete form of the deformation gradient. The discrete, incremental form of the deformation gradient emerges from a weighted least squares minimization that includes a length scale relating the distance from the atom in question with a particular radius. This region defines the nonlocal domain of the strain at that atom. The local atomic strain tensors are then computed using continuum definitions in terms of the deformation gradient. The results of molecular dynamics simulations are presented that compare the Almansi and Green strain tensors under inhomogeneous deformation and indicate that the small-strain approximation should not be used to determine large atomic strains. C1 [Gullett, P. M.; Horstemeyer, M. F.] Mississippi State Univ, Ctr Adv Vehicular Syst, Mississippi State, MS 39762 USA. [Baskes, M. I.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Fang, H.] Univ N Carolina, Charlotte, NC 28223 USA. RP Gullett, PM (reprint author), Mississippi State Univ, Ctr Adv Vehicular Syst, Mississippi State, MS 39762 USA. EM pmgullett@cee.msstate.edu OI Horstemeyer, Mark/0000-0003-4230-0063 NR 17 TC 27 Z9 28 U1 1 U2 18 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0965-0393 J9 MODEL SIMUL MATER SC JI Model. Simul. Mater. Sci. Eng. PD JAN PY 2008 VL 16 IS 1 AR 015001 DI 10.1088/0965-0393/16/1/015001 PG 17 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA 263DI UT WOS:000253197400001 ER PT J AU Tonks, M Harstad, E Maudlin, P Trujillo, C AF Tonks, Michael Harstad, Eric Maudlin, Paul Trujillo, Carl TI A design of inverse Taylor projectiles using material simulation SO MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING LA English DT Article ID CYLINDER-IMPACT TEST; MODEL PARAMETERS; DEFORMATION; VALIDATION; CONSTANTS; METALS AB The classic Taylor cylinder test, in which a right circular cylinder is projected at a rigid anvil, exploits the inertia of the projectile to access strain rates that are difficult to achieve with more traditional uniaxial testing methods. In this work we present our efforts to design inverse Taylor projectiles, in which a tapered projectile becomes a right circular cylinder after impact, from annealed copper and show that the self-correcting geometry leads to a uniform compressive strain in the radial direction. We design projectiles using finite element simulation and optimization that deform as desired in tests with minor deviations in the deformed geometry due to manufacturing error and uncertainty in the initial velocity. The inverse Taylor projectiles designed in this manner provide a simple means of validating constitutive models. This work is a step towards developing a general method of designing Taylor projectiles that provide stress strain behavior relevant to particular engineering problems. C1 [Tonks, Michael; Harstad, Eric; Maudlin, Paul; Trujillo, Carl] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Tonks, M (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM tonksmr@lanl.gov NR 18 TC 0 Z9 0 U1 1 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0965-0393 J9 MODEL SIMUL MATER SC JI Model. Simul. Mater. Sci. Eng. PD JAN PY 2008 VL 16 IS 1 AR 015005 DI 10.1088/0965-0393/16/1/015005 PG 10 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA 263DI UT WOS:000253197400005 ER PT S AU Marinkovic, NS Vukmirovic, MB Adzic, RR AF Marinkovic, N. S. Vukmirovic, M. B. Adzic, R. R. BE Vayenas, CG White, RE GamboaAldeco, ME TI Some Recent Studies in Ruthenium Electrochemistry and Electrocatalysis SO MODERN ASPECTS OF ELECTROCHEMISTRY, NO 42 SE Modern Aspects of Electrochemistry LA English DT Article; Book Chapter ID SCANNING-TUNNELING-MICROSCOPY; SINGLE-CRYSTAL SURFACES; IN-SITU FTIR; VIBRATIONAL FREQUENCY-SHIFTS; RU(0001) ELECTRODE SURFACE; CO OXIDATION REACTION; GAS-PHASE OXIDATION; X-RAY-ABSORPTION; PT(111) ELECTRODE; CARBON-MONOXIDE C1 [Marinkovic, N. S.; Vukmirovic, M. B.; Adzic, R. R.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. RP Marinkovic, NS (reprint author), Univ Delaware, Dept Chem Engn, Newark, DE 19716 USA. NR 123 TC 4 Z9 4 U1 2 U2 5 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES SN 0076-9924 BN 978-0-387-49488-3 J9 MOD ASP ELECTROCHEM PY 2008 IS 42 BP 1 EP 52 D2 10.1007/978-0-387-49489-0 PG 52 WC Electrochemistry SC Electrochemistry GA BKA63 UT WOS:000267605600001 ER PT J AU Williamson, RA Panagiotidou, P Mott, JD Howard, MJ AF Williamson, Richard A. Panagiotidou, Parthena Mott, Joni D. Howard, Mark J. TI Dynamic characterisation of the netrin-like domain of human type 1 procollagen C-proteinase enhancer and comparison to the N-terminal domain of tissue inhibitor of metalloproteinases (TIMP) SO MOLECULAR BIOSYSTEMS LA English DT Article ID N-15 NMR RELAXATION; BIOLOGICAL MACROMOLECULES; RESOLUTION STRUCTURE; BINDING DOMAIN; ACTIVE DOMAIN; INDUCED FIT; GLYCOPROTEIN; SPECTROSCOPY; MECHANISM; SEQUENCE AB The backbone mobility of the C-terminal domain of procollagen C-proteinase enhancer (NTRPCOLCE1), part of a connective tissue glycoprotein, was determined using N-15 NMR spectroscopy. NTRPCOLCE1 has been shown to be a netrin-like domain and adopts an OB-fold such as that found in the N-terminal domain of tissue inhibitors of metalloproteinases-1 (N-TIMP-1), N-TIMP-2, the laminin-binding domain of agrin and the C-terminal domain of complement protein C5. NMR relaxation dynamics of NTRPCOLCE1 highlight conformational flexibility in the N-terminus, strand A and the proximal CD loop. This region in N-TIMP is known to be essential for inhibitory activity against the matrix metalloproteinases and suggests that this region is of equal importance for NTRPCOLCE1, although the specific functional activity of the NTRPCOLCE1 domain is still unknown. Dynamics observed within the structural core of NTRPCOLCE1 that are not observed in N-TIMP molecules suggest that although the two domains have a similar architecture, the NTRPCOLCE1 domain will show different thermodynamic properties on binding and hence the target molecule could be somewhat different from that observed for the TIMPs. ModelFree order parameters show that NTRPCOLCE1 has more flexibility than both N-TIMP-1 and N-TIMP-2. C1 [Williamson, Richard A.; Panagiotidou, Parthena; Howard, Mark J.] Univ Kent, Dept Biosci, Canterbury CT2 7NJ, Kent, England. [Mott, Joni D.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Williamson, RA (reprint author), Univ Kent, Dept Biosci, Canterbury CT2 7NJ, Kent, England. EM r.a.williamson@kent.ac.uk; m.j.howard@kent.ac.uk FU NCI NIH HHS [CA88858A]; Wellcome Trust NR 39 TC 8 Z9 8 U1 0 U2 1 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1742-206X J9 MOL BIOSYST JI Mol. Biosyst. PY 2008 VL 4 IS 5 BP 417 EP 425 DI 10.1039/b717901d PG 9 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 288PR UT WOS:000254998800007 PM 18414739 ER PT J AU Betanzos-Cabrera, G Harker, BW Doktycz, MJ Weber, JL Beattie, KL AF Betanzos-Cabrera, Gabriel Harker, Brent W. Doktycz, Mitchel J. Weber, James L. Beattie, Kenneth L. TI A comparison of hybridization efficiency between flat glass and channel glass solid supports SO MOLECULAR BIOTECHNOLOGY LA English DT Article DE channel glass; flat glass; oligonucleotide arrays; capture probes; hybridization; sensitivity ID THERMODYNAMIC PARAMETERS; MICROARRAY HYBRIDIZATION; MICROFLUIDIC DEVICE; DNA; OLIGONUCLEOTIDES; POLYMORPHISMS; ATTACHMENT; MISMATCHES; ARRAYS; ASSAYS AB Two different solid supports, channel glass and flat glass, were compared for their affect on the sensitivity and efficiency of DNA hybridization reactions. Both solid supports were tested using a set of arrayed, synthetic oligonucleotides that are designed to detect short insertion/deletion polymorphisms (SIDPs). A total of 13 different human SIDPs were chosen for analysis. Capture probes, designed for this test set, were covalently immobilized on substrates. Hybridization efficiency was assessed using fluorescently labeled stacking probes which were preannealed to the target and then hybridized to the support-bound oligonucleotide array; the hybridization pattern was detected by fluorescence imaging. It was found that structural features of nucleic acid capture probes tethered to a solid support and the molecular basis of their interaction with targets in solution have direct implications on the hybridization process. Our results demonstrate that channel glass has a number of practical advantages over flat glass including higher sensitivity and a faster hybridization rate. C1 [Betanzos-Cabrera, Gabriel] Univ Autonoma Estado Hidalgo, Inst Ciencias Salud, Area Acad Nutr, Hidalgo 42000, Mexico. [Harker, Brent W.] Univ Notre Dame, Ctr Global Hlth & Infect Dis, Dept Biol Sci, Notre Dame, IN 46556 USA. [Doktycz, Mitchel J.; Beattie, Kenneth L.] Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN 37831 USA. [Weber, James L.] Marshfield Med Res, Ctr Genet Med, Marsfield, WI USA. RP Betanzos-Cabrera, G (reprint author), Univ Autonoma Estado Hidalgo, Inst Ciencias Salud, Area Acad Nutr, Abasolo 600 Pachuca Soto, Hidalgo 42000, Mexico. EM gbetanzo@uaeh.reduaeh.mx RI Doktycz, Mitchel/A-7499-2011 OI Doktycz, Mitchel/0000-0003-4856-8343 FU NHLBI NIH HHS [R01 HL62681-01] NR 38 TC 1 Z9 1 U1 0 U2 2 PU HUMANA PRESS INC PI TOTOWA PA 999 RIVERVIEW DRIVE SUITE 208, TOTOWA, NJ 07512 USA SN 1073-6085 J9 MOL BIOTECHNOL JI Mol. Biotechnol. PD JAN PY 2008 VL 38 IS 1 BP 71 EP 80 DI 10.1007/s12033-007-9001-z PG 10 WC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology GA 243KV UT WOS:000251796300007 PM 18095192 ER PT J AU Greulich-Bode, KM Wang, M Rhein, AP Weier, JF Weier, HUG AF Greulich-Bode, Karin M. Wang, Mei Rhein, Andreas P. Weier, Jingly F. Weier, Heinz-Ulli G. TI Validation of DNA probes for molecular cytogenetics by mapping onto immobilized circular DNA SO MOLECULAR CYTOGENETICS LA English DT Article AB Background: Fluorescence in situ hybridization (FISH) is a sensitive and rapid procedure to detect gene rearrangements in tumor cells using non-isotopically labeled DNA probes. Large insert recombinant DNA clones such as bacterial artificial chromosome (BAC) or P1/PAC clones have established themselves in recent years as preferred starting material for probe preparations due to their low rates of chimerism and ease of use. However, when developing probes for the quantitative analysis of rearrangements involving genomic intervals of less than 100 kb, careful probe selection and characterization are of paramount importance. Results: We describe a sensitive approach to quality control probe clones suspected of carrying deletions or for measuring clone overlap with near kilobase resolution. The method takes advantage of the fact that P1/PAC/BAC's can be isolated as circular DNA molecules, stretched out on glass slides and fine-mapped by multicolor hybridization with smaller probe molecules. Two examples demonstrate the application of this technique: mapping of a gene-specific similar to 6 kb plasmid onto an unusually small, similar to 55 kb circular P1 molecule and the determination of the extent of overlap between P1 molecules homologous to the human NF-kappa B2 locus. Conclusion: The relatively simple method presented here does not require specialized equipment and may thus find widespread applications in DNA probe preparation and characterization, the assembly of physical maps for model organisms or in studies on gene rearrangements. C1 [Greulich-Bode, Karin M.] German Canc Res Ctr, Div Genet Skin Carcinogenesis, Heidelberg, Germany. [Greulich-Bode, Karin M.; Wang, Mei; Rhein, Andreas P.; Weier, Jingly F.; Weier, Heinz-Ulli G.] Univ Calif Berkeley, EO Lawrence Berkeley Natl Lab, Life Sci Div, Berkeley, CA 94720 USA. [Weier, Jingly F.] Reprogenet LLC, San Francisco, CA USA. [Rhein, Andreas P.] Klinikum Kaufbeuren, D-87600 Kaufbeuren, Germany. RP Greulich-Bode, KM (reprint author), German Canc Res Ctr, Div Genet Skin Carcinogenesis, Heidelberg, Germany. EM k.greulich@dkfz-heidelberg.de; mwang@lbl.gov; Andreas.Rhein@klinikum-kf-oal.de; jinglyw@gmail.com; ugweier@lbl.gov FU United States Government; NIH [CA88258, HD44313, CA123370]; Office of Energy Research, Office of Health and Environmental Research, U.S. Department of Energy [DE-AC-02-05CH11231]; Tumorzentrum Heidelberg-Mannheim; BMBF UV-Strahlenschaden FX This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States Government nor any agency thereof, nor The Regents of the University of California, nor any of their employees, makes any warranty, express or implied, or assumes any legal responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by its trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof, or The Regents of the University of California. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof or The Regents of the University of California.; This work was supported in part by NIH grants CA88258, HD44313 and CA123370 ( to HUGW), and a grant from the Director, Office of Energy Research, Office of Health and Environmental Research, U.S. Department of Energy, under contract DE-AC-02-05CH11231 as well as the Tumorzentrum Heidelberg-Mannheim and the BMBF UV-Strahlenschaden. The authors greatfully acknowledge the help of Drs. J.-F. Cheng and D. Krunic with screening the P1 library and digital image processing, respectively. NR 41 TC 4 Z9 4 U1 1 U2 1 PU BIOMED CENTRAL LTD PI LONDON PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND SN 1755-8166 J9 MOL CYTOGENET JI Mol. Cytogenet. PY 2008 VL 1 AR 28 DI 10.1186/1755-8166-1-28 PG 11 WC Genetics & Heredity SC Genetics & Heredity GA V25EH UT WOS:000208460800028 PM 19108707 ER PT J AU Hill, CE Tomko, S Hagen, C Schable, NA Glenn, TC AF Hill, Christopher E. Tomko, Scott Hagen, Cris Schable, Nancy A. Glenn, Travis C. TI Novel microsatellite markers for the saltmarsh sharp-tailed sparrow, Ammodramus caudacutus (Aves : Passeriformes) SO MOLECULAR ECOLOGY RESOURCES LA English DT Article DE Ammodramus; birds; Emberizidae; microsatellites; PCR primers; SSR ID PATERNITY AB We have developed eight high-quality microsatellite DNA loci for the saltmarsh sharp-tailed sparrow and one additional locus with evidence of null alleles. In a sample of 250-350 individuals, the average number of alleles per locus was 14.7 and average observed heterozygosity was 0.80. These loci were tested in three additional species of emberizid sparrows, indicating that more than half of the loci could be useful in other sparrows. C1 [Hill, Christopher E.; Tomko, Scott] Coastal Carolina Univ, Dept Biol, Conway, SC 29528 USA. [Hagen, Cris; Schable, Nancy A.; Glenn, Travis C.] Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA. RP Hill, CE (reprint author), Coastal Carolina Univ, Dept Biol, POB 261958, Conway, SC 29528 USA. EM chill@coastal.edu RI Glenn, Travis/A-2390-2008 NR 10 TC 7 Z9 7 U1 0 U2 12 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 1471-8278 J9 MOL ECOL RESOUR JI Mol. Ecol. Resour. PD JAN PY 2008 VL 8 IS 1 BP 113 EP 115 DI 10.1111/j.1471-8286.2007.01885.x PG 3 WC Biochemistry & Molecular Biology; Ecology; Evolutionary Biology SC Biochemistry & Molecular Biology; Environmental Sciences & Ecology; Evolutionary Biology GA 271ZL UT WOS:000253827100019 PM 21585730 ER PT J AU Peters, MB Hagen, C Trapnell, DW Hamrick, JL Rocha, O Smouse, PE Glenn, TC AF Peters, Maureen B. Hagen, Cris Trapnell, Dorset W. Hamrick, J. L. Rocha, Oscar Smouse, Peter E. Glenn, Travis C. TI Isolation and characterization of microsatellite loci in the Guanacaste tree, Enterolobium cyclocarpum SO MOLECULAR ECOLOGY RESOURCES LA English DT Article DE Enterolobium cyclocarpum; Guanacaste tree; microsatellites; parentage analysis; PCR; pollen dispersal; population structure AB We isolated nine microsatellite loci from the Guanacaste tree (Enterolobium cyclocarpum) and optimized them for future research on breeding populations of this species. Loci were screened across 53 individuals from one population and were shown to be variable with the number of alleles per locus ranging from five to 15. Polymorphic information content ranged from 0.420 to 0.900 and observed heterozygosity ranged from 0.547 to 0.906. C1 [Peters, Maureen B.; Hagen, Cris; Glenn, Travis C.] Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA. [Trapnell, Dorset W.] Univ Georgia, Inst Ecol, Athens, GA 30602 USA. [Hamrick, J. L.] Univ Georgia, Dept Plant Biol, Athens, GA 30602 USA. [Smouse, Peter E.] Kent State Univ, Dept Biol Sci, Kent, OH 44242 USA. [Smouse, Peter E.] Rutgers State Univ, New Brunswick, NJ 08901 USA. RP Peters, MB (reprint author), Univ Georgia, Savannah River Ecol Lab, PO Drawer E, Aiken, SC 29802 USA. EM peters@srel.edu RI Glenn, Travis/A-2390-2008; OI Trapnell, Dorset/0000-0001-7184-4700 NR 7 TC 5 Z9 5 U1 0 U2 3 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 1471-8278 J9 MOL ECOL RESOUR JI Mol. Ecol. Resour. PD JAN PY 2008 VL 8 IS 1 BP 129 EP 131 DI 10.1111/j.1471-8286.2007.01896.x PG 3 WC Biochemistry & Molecular Biology; Ecology; Evolutionary Biology SC Biochemistry & Molecular Biology; Environmental Sciences & Ecology; Evolutionary Biology GA 271ZL UT WOS:000253827100024 PM 21585735 ER PT J AU Peters, MB Beard, KH Hagen, C O'Neill, EM Mock, KE Pitt, WC Glenn, TC AF Peters, Maureen B. Beard, Karen H. Hagen, Cris O'Neill, Eric M. Mock, Karen E. Pitt, William C. Glenn, Travis C. TI Isolation of microsatellite loci from the coqui frog, Eleutherodactylus coqui SO MOLECULAR ECOLOGY RESOURCES LA English DT Article DE amphibian; conservation genetics; invasive species; population structure; primer; Puerto Rico ID DNA LOCI; HAWAII AB Thirteen microsatellite loci were isolated from the coqui frog (Eleutherodactylus coqui) and optimized for future research. The loci were screened across 37 individuals from two Puerto Rican populations. Loci were variable with the number of alleles per locus ranging from three to 38. Polymorphic information content ranged from 0.453 to 0.963 and observed heterozygosity for each population ranged from 0.320 to 0.920. C1 [Peters, Maureen B.; Hagen, Cris; Glenn, Travis C.] Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA. [Beard, Karen H.; Mock, Karen E.] Utah State Univ, Dept Wildland Resources & Ecol Ctr, Logan, UT 84322 USA. [O'Neill, Eric M.] Utah State Univ, Dept Biol, Logan, UT 84322 USA. [Pitt, William C.] USDA, APHIS, WS, Natl Wildlife Res Ctr, Hilo Field Stn, HI 96721 USA. RP Peters, MB (reprint author), Univ Georgia, Savannah River Ecol Lab, PO Drawer E, Aiken, SC 29802 USA. EM peters@srel.edu RI Mock , Karen/C-1418-2011; Glenn, Travis/A-2390-2008; Beard, Karen/B-7177-2011 NR 13 TC 3 Z9 3 U1 1 U2 6 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 1471-8278 J9 MOL ECOL RESOUR JI Mol. Ecol. Resour. PD JAN PY 2008 VL 8 IS 1 BP 139 EP 141 DI 10.1111/j.1471-8286.2007.01899.x PG 3 WC Biochemistry & Molecular Biology; Ecology; Evolutionary Biology SC Biochemistry & Molecular Biology; Environmental Sciences & Ecology; Evolutionary Biology GA 271ZL UT WOS:000253827100027 PM 21585738 ER PT J AU Lutz-Carrillo, DJ Hagen, C Dueck, LA Glenn, TC AF Lutz-Carrillo, Dijar J. Hagen, Cris Dueck, Lucy A. Glenn, Travis C. TI Isolation and characterization of microsatellite loci for Florida largemouth bass, Micropterus salmoides floridanus, and other micropterids SO MOLECULAR ECOLOGY RESOURCES LA English DT Article DE centrarchidae; Florida largemouth bass; micropterids; Micropterus; microsatellites; simple sequence repeats ID SOFTWARE; DNA AB We isolated and characterized 52 novel microsatellite markers from Florida largemouth bass, Micropterus salmoides floridanus, for use in conservation, management and population genetic studies. Markers were assessed in M. s. floridanus from peninsular Florida (n = 30) and averaged eight alleles per locus with observed heterozygosity of 0.57 (range 0-0.97). Cross-taxa amplification was successful among 88% of tested congeners. These polymorphic and potentially taxon-diagnostic markers contribute to the limited number of microsatellites currently available for micropterids and specifically M. s. floridanus. C1 [Lutz-Carrillo, Dijar J.] Texas Parks & Wildlife Dept, AE Wood Lab, San Marcos, TX 78666 USA. [Hagen, Cris; Dueck, Lucy A.; Glenn, Travis C.] Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA. RP Lutz-Carrillo, DJ (reprint author), Texas Parks & Wildlife Dept, AE Wood Lab, 507 Staples Rd, San Marcos, TX 78666 USA. EM dijar.lutz-carrillo@tpwd.state.tx.us RI Glenn, Travis/A-2390-2008 NR 9 TC 11 Z9 12 U1 1 U2 8 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 1755-098X J9 MOL ECOL RESOUR JI Mol. Ecol. Resour. PD JAN PY 2008 VL 8 IS 1 BP 178 EP 184 DI 10.1111/j.1471-8286.2007.01917.x PG 7 WC Biochemistry & Molecular Biology; Ecology; Evolutionary Biology SC Biochemistry & Molecular Biology; Environmental Sciences & Ecology; Evolutionary Biology GA 271ZL UT WOS:000253827100039 PM 21585750 ER PT J AU Crawford, NG Zaldivar-Rae, J Hagen, C Schable, A Rosenblum, EB Graves, JA Reeder, TW Ritchie, MG Glenn, TC AF Crawford, Nicholas G. Zaldivar-Rae, Jaime Hagen, Cris Schable, Amanda Rosenblum, Erica Bree Graves, Jeff A. Reeder, Tod W. Ritchie, Michael G. Glenn, Travis C. TI Thirteen polymorphic microsatellite DNA loci from whiptails of the genus Aspidoscelis (Teiidae : Squamata) and related cnemidophorine lizards SO MOLECULAR ECOLOGY RESOURCES LA English DT Article DE Ameiva; Aspidoscelis; Cnemidophorus; lizard; microsatellite; PCR primers; SSR; STR; teiid; whiptail ID TESSELATA; SELECTION; EVOLUTION; PRIMERS; MEXICO AB We describe polymerase chain reaction primers and amplification conditions for 13 microsatellite DNA loci isolated from two bisexual species of whiptail lizards Aspidoscelis costata huico and Aspidoscelis inornata. Primers were tested on either 16 or 48 individuals of A. c. huico and/or 26 individuals of A. inornata. Ten of the 13 primers were also tested against a panel of 31 additional whiptail taxa. We detected three to nine alleles per locus in A. c. huico and four to 19 alleles per locus in A. inornata, with observed heterozygosity ranging from 0.60 to 0.87 and from 0.15 to 1.00, respectively. These primers will be an important resource for surveys of genetic variation in these lizards. C1 [Crawford, Nicholas G.; Reeder, Tod W.] San Diego State Univ, Dept Biol, San Diego, CA 92182 USA. [Zaldivar-Rae, Jaime] Univ Nacl Autonoma Mexico, Inst Ecol, Lab Conducta Anim, Mexico City 04510, DF, Mexico. [Crawford, Nicholas G.; Hagen, Cris; Schable, Amanda; Glenn, Travis C.] Univ Georgia, Savannah River Ecol Lab, Aiken, SC 29802 USA. [Rosenblum, Erica Bree] Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA. [Rosenblum, Erica Bree] Lawrence Berkely Natl Lab, Dept Genome Sci, Berkeley, CA 94720 USA. [Graves, Jeff A.; Ritchie, Michael G.] Univ St Andrews, St Andrews KY16 9TS, Fife, Scotland. RP Crawford, NG (reprint author), San Diego State Univ, Dept Biol, San Diego, CA 92182 USA. EM ngcrawford@gmail.como RI Ritchie, Michael/B-7714-2008; Glenn, Travis/A-2390-2008; Ritchie, Michael/F-7055-2013 OI Ritchie, Michael/0000-0001-7913-8675 NR 18 TC 4 Z9 4 U1 2 U2 11 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 1755-098X J9 MOL ECOL RESOUR JI Mol. Ecol. Resour. PD JAN PY 2008 VL 8 IS 1 BP 219 EP 223 DI 10.1111/j.1471-8286.2007.01930.x PG 5 WC Biochemistry & Molecular Biology; Ecology; Evolutionary Biology SC Biochemistry & Molecular Biology; Environmental Sciences & Ecology; Evolutionary Biology GA 271ZL UT WOS:000253827100050 PM 21585761 ER PT J AU Wang, H Ye, M Robinson, H Francis, SH Ke, H AF Wang, Huanchen Ye, Mengchun Robinson, Howard Francis, Sharron H. Ke, Hengming TI Conformational variations of both phosphodiesterase-5 and inhibitors provide the structural basis for the physiological effects of vardenafil and sildenafil SO MOLECULAR PHARMACOLOGY LA English DT Article ID CYCLIC-NUCLEOTIDE PHOSPHODIESTERASES; CGMP-SPECIFIC PHOSPHODIESTERASE-5; ERECTILE DYSFUNCTION; CRYSTAL-STRUCTURES; TYPE-5 INHIBITORS; DRUG DEVELOPMENT; PDE5 INHIBITOR; SELECTIVITY; DOMAIN; POTENCY AB Vardenafil has higher affinity to phosphodiesterase-5 (PDE5) than sildenafil and lower administered dosage for the treatment of erectile dysfunction. However, the molecular basis for these differences is puzzling because two drugs have similar chemical structures. Reported here is a crystal structure of the fully active and nonmutated PDE5A1 catalytic domain in complex with vardenafil. The structure shows that the conformation of the H-loop in the PDE5A1-vardenafil complex is different from those of any known structures of the unliganded PDE5 and its complexes with the inhibitors. In addition, the molecular configuration of vardenafil differs from that of sildenafil when bound to PDE5. It is noteworthy that the binding of vardenafil causes loss of the divalent metal ions that have been observed in all the previously published PDE structures. The conformational variation of both PDE5 and the inhibitors provides structural insight into the different potencies of the drugs. C1 [Wang, Huanchen; Ye, Mengchun; Ke, Hengming] Univ N Carolina, Dept Biochem & Biophys, Chapel Hill, NC 27599 USA. [Robinson, Howard] Brookhaven Natl Lab, Dept Biol, Upton, NY 11973 USA. [Francis, Sharron H.] Vanderbilt Univ, Sch Med, Dept Physiol & Mol Biophys, Nashville, TN 37212 USA. RP Ke, H (reprint author), Univ N Carolina, Dept Biochem & Biophys, Chapel Hill, NC 27599 USA. EM hke@med.unc.edu RI ye, mengchun/D-5629-2014 OI ye, mengchun/0000-0002-2019-5365 FU NIDDK NIH HHS [DK58277, R01 DK058277]; NIGMS NIH HHS [GM59791, R01 GM059791, R01 GM059791-07] NR 46 TC 27 Z9 28 U1 1 U2 4 PU AMER SOC PHARMACOLOGY EXPERIMENTAL THERAPEUTICS PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3995 USA SN 0026-895X J9 MOL PHARMACOL JI Mol. Pharmacol. PD JAN PY 2008 VL 73 IS 1 BP 104 EP 110 DI 10.1124/mol.107.040212 PG 7 WC Pharmacology & Pharmacy SC Pharmacology & Pharmacy GA 243JP UT WOS:000251792900011 PM 17959709 ER PT J AU Strasser, D Haber, LH Doughty, B Leone, SR AF Strasser, Daniel Haber, Louis H. Doughty, Benjamin Leone, Stephen R. TI Ultrafast predissociation of superexcited nitrogen molecules SO MOLECULAR PHYSICS LA English DT Article DE high order harmonic generation; femtosecond; superexcited states; autoionization; predissociation ID DOUBLY-EXCITED RESONANCES; PHOTOELECTRON-SPECTROSCOPY; NEUTRAL DISSOCIATION; DIATOMIC-MOLECULES; STATES; DYNAMICS; PHOTOIONIZATION; CHEMISTRY; PHYSICS; REGION AB Superexcited states of neutral nitrogen molecules, with excited N(2)(+) (C(2)Sigma(+)(u)) ion cores, are prepared above the N(2) ionization limit with femtosecond pulses of 23.1 eV photons, produced by high-order harmonic generation. Time-resolved predissociation of the superexcited nitrogen molecules is observed by detection of electronically excited atomic N*(4p) and/or N*(3d) product formation, by photoionization of the excited atoms with a delayed 805 nm pulse. An upper limit lifetime of 25 fs is determined for the superexcited states, attributed to the sum of autoionization and predissociation pathways, based on the risetime of predissociation products. The observation of dissociation products from the short-lived states shows that the predissociation decay pathways compete with autoionization pathways on an ultrafast timescale. C1 [Leone, Stephen R.] Univ Calif Berkeley, Dept Chem & Phys, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Leone, SR (reprint author), Univ Calif Berkeley, Dept Chem & Phys, Berkeley, CA 94720 USA. EM srl@berkeley.edu RI Haber, Louis/A-6762-2013; Doughty, Benjamin /M-5704-2016 OI Doughty, Benjamin /0000-0001-6429-9329 NR 25 TC 12 Z9 13 U1 4 U2 17 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0026-8976 J9 MOL PHYS JI Mol. Phys. PY 2008 VL 106 IS 2-4 BP 275 EP 280 DI 10.1080/00268970701790967 PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 303RO UT WOS:000256058400010 ER PT J AU Neumark, DM AF Neumark, Daniel M. TI Spectroscopy and dynamics of excess electrons in clusters SO MOLECULAR PHYSICS LA English DT Review DE clusters; hydrated electrons; photodetachment ID PUMP-PROBE SPECTROSCOPY; ION PHOTOELECTRON-SPECTROSCOPY; NEGATIVELY CHARGED WATER; DIPOLE-BOUND ANIONS; TO-SOLVENT STATES; HYDRATED-ELECTRON; AB-INITIO; SOLVATED-ELECTRON; INFRARED-SPECTROSCOPY; RELAXATION DYNAMICS AB Anionic clusters comprising solvent molecules and excess electrons can provide new insights into electron solvation in liquids, an intrinsically bulk phenomenon. This paper reviews experimental and theoretical studies of this class of clusters, focusing primarily on water cluster anions, [image omitted], but also on iodide-water clusters, I-(H2O)n, and methanol cluster anions [image omitted]. Issues of particular interest include the relationship of time-resolved dynamics in these clusters to those of bulk solvated electrons, and the nature of the electron binding motifs supported by these clusters. C1 [Neumark, Daniel M.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Neumark, Daniel M.] Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Neumark, DM (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. EM dneumark@berkeley.edu RI Neumark, Daniel/B-9551-2009 OI Neumark, Daniel/0000-0002-3762-9473 FU National Science Foundation [CHE-0649647]; US-Israel Binational Science Foundation [2000-333, 2004-401] FX This research is supported by the National Science Foundation under Grant No. CHE-0649647. The collaboration with Ori Cheshnovsky was supported by the US-Israel Binational Science Foundation under Grants 2000-333 and 2004-401. NR 149 TC 53 Z9 53 U1 4 U2 32 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0026-8976 EI 1362-3028 J9 MOL PHYS JI Mol. Phys. PY 2008 VL 106 IS 16-18 BP 2183 EP 2197 AR PII 905334995 DI 10.1080/00268970802279555 PG 15 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 371LB UT WOS:000260831700013 ER PT J AU Lawler, KV Parkhill, JA Head-Gordon, M AF Lawler, Keith V. Parkhill, John A. Head-Gordon, Martin TI Penalty functions for combining coupled-cluster and perturbation amplitudes in local correlation methods with optimized orbitals SO MOLECULAR PHYSICS LA English DT Article DE ab initio; electronic structure; quantum chemistry; computational chemistry ID ENERGY CALCULATIONS; LINEAR-COMBINATION; WAVE-FUNCTIONS; DOUBLES MODEL; VALENCE; AROMATICITY; RESOLUTION; ALGORITHM; CHEMISTRY; ETHYLENE AB Local active space correlation models based on the coupled-cluster doubles (CCD) model like Generalized Valence Bond Perfect Pairing (GVB-PP) and Imperfect Pairing (IP) are attractive methods for treating electron correlation, because they are computationally inexpensive and can describe strong correlations. However, they suffer from symmetry-breaking (SB) in systems with multiple resonance structures, which arises due to neglected correlations. We investigate the extent to which these problems can be removed by using second-order perturbation theory (PT) for weak correlations coupling three different electron pairs, and (infinite-order) coupled-cluster (CC) theory for stronger correlations involving electrons in only one or two pairs. The resulting Three-Pair Corrected Imperfect Pairing (TIP) method is explored here, and it is shown that to robustly combine CC and PT it is necessary to modify several aspects of the basic method. Most importantly, a penalty function term is introduced to ensure the PT amplitudes remain small. Comparison against CC treatment of the three-pair correlations suggests penalty terms will be beneficial for any hybrid CC/PT method that includes orbital optimization. The TIP method greatly reduces SB in aromatic hydrocarbons and recovers a significantly higher fraction of the valence electron correlation energy than IP. C1 [Lawler, Keith V.; Parkhill, John A.; Head-Gordon, Martin] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Lawler, Keith V.; Parkhill, John A.; Head-Gordon, Martin] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Head-Gordon, M (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. EM mhg@bastille.cchem.berkeley.edu FU Department of Energy FX This work was supported by the Department of Energy through a grant under the program for Scientific Discovery through Advanced Computing (SciDAC). NR 40 TC 14 Z9 14 U1 1 U2 1 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0026-8976 J9 MOL PHYS JI Mol. Phys. PY 2008 VL 106 IS 19 BP 2309 EP 2324 AR PII 904496695 DI 10.1080/00268970802443482 PG 16 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 375CL UT WOS:000261090600007 ER PT J AU Rudd, RE Lee, B AF Rudd, R. E. Lee, B. TI Mechanics of silicon nanowires: size-dependent elasticity from first principles SO MOLECULAR SIMULATION LA English DT Article DE nanowire; Young's modulus; density functional theory; size effect; surface stress ID TOTAL-ENERGY CALCULATIONS; AUGMENTED-WAVE METHOD; TRANSITION-METALS; SURFACE STRESS; BASIS-SET; SIMULATION; CRYSTALS AB We discuss size-dependent elastic properties in the context of our recent work on the mechanics of silicon nanowires. The results are based on first-principles density functional theory calculations. We focus especially on the size dependence of the Young's modulus, but also comment on the size dependence of the residual stress and the equilibrium length of the hydrogen-passivated Si nanowires. We compare these results to prior results from classical molecular dynamics based on empirical potentials. C1 [Rudd, R. E.; Lee, B.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Rudd, RE (reprint author), Lawrence Livermore Natl Lab, L-045, Livermore, CA 94551 USA. EM robert.rudd@llnl.gov NR 38 TC 19 Z9 19 U1 0 U2 13 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 2-4 PARK SQUARE, MILTON PARK, ABINGDON OR14 4RN, OXON, ENGLAND SN 0892-7022 EI 1029-0435 J9 MOL SIMULAT JI Mol. Simul. PY 2008 VL 34 IS 1 BP 1 EP 8 DI 10.1080/08927020701730435 PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 287WR UT WOS:000254947800001 ER PT J AU Soares, TA Straatsma, TP AF Soares, T. A. Straatsma, T. P. TI Assessment of the convergence of molecular dynamics simulations of lipopolysaccharide membranes SO MOLECULAR SIMULATION LA English DT Article DE lipopolysaccharide structure; outer membrane; S(2) order parameters; area per lipid molecule; transmembrane potential; asymmetric bilayer ID PSEUDOMONAS-AERUGINOSA LIPOPOLYSACCHARIDE; TRANSFORM INFRARED-SPECTROSCOPY; H-2 NMR-SPECTROSCOPY; FREE LIPID-A; OUTER-MEMBRANE; ESCHERICHIA-COLI; SALMONELLA-TYPHIMURIUM; PHOSPHOLIPID-BILAYERS; MAGNETIC-RESONANCE; ORDER PARAMETERS AB The outer membrane of Gram-negative bacteria is composed of a phospholipid inner leaflet and a lipopolysaccharide (LPS) outer leaflet. The chemical structure of LPS results in an asymmetric character of outer membranes that has been shown to play an important role in the electrical properties of porins, low permeability and intrinsic antibiotic resistance of Gram-negative bacteria. Atomistic molecular dynamics simulations of two different configurations of the outer membrane of Pseudomonas aeruginosa under periodic boundary conditions were carried out in order to (1) validate model-derived properties against the available experimental data, (2) identify the properties whose dynamics can be sampled on nanosecond timescales, and (3) evaluate the dependence of the convergence of structural and dynamical properties on the initial configuration of the system, within the chosen force field and simulation conditions. Because the relaxation times associated with the motions of individual LPS monomers in outer membranes are very long, the two initial configurations do not converge to a common ensemble of configuration on the nanosecond time scale. However, a number of properties of the outer membrane that will significantly impact the structural and internal dynamics of transmembrane proteins, most notably the electrostatic potential and molecular density, do converge within the simulated time scale. For these properties, a good agreement with the available experimental data was found. Such a molecular model, capable of accounting for the high asymmetry and low fluidity characteristics of outer membranes provides a more appropriate environment for atomistic simulations of outer membrane proteins. C1 [Soares, T. A.; Straatsma, T. P.] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Straatsma, TP (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. EM tps@pnl.gov RI Soares, Thereza/G-1065-2010 OI Soares, Thereza/0000-0002-5891-6906 NR 55 TC 17 Z9 17 U1 5 U2 14 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0892-7022 J9 MOL SIMULAT JI Mol. Simul. PY 2008 VL 34 IS 3 BP 295 EP 307 DI 10.1080/08927020701829880 PG 13 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 302TH UT WOS:000255991700007 ER PT J AU Andersen, A Govind, N Subramanian, L AF Andersen, Amity Govind, Niranjan Subramanian, Lalitha TI Theoretical study of the mechanism behind the para-selective nitration of toluene in zeolite H-Beta SO MOLECULAR SIMULATION LA English DT Article DE toluene; nitration; beta; zeolite; density functional theory ID MQ MAS NMR; DENSITY-FUNCTIONAL CALCULATIONS; AMORPHOUS SILICA-ALUMINA; ALK EDGE XANES; AROMATIC-COMPOUNDS; AL-27 MAS; REGIOSELECTIVE NITRATION; BENZOYL NITRATE; ACID; BEA AB Periodic density functional theory calculations were performed to investigate the origin of the favourable para-selective nitration of toluene exhibited by zeolite H-beta with acetyl nitrate nitration agent. Energy calculations were performed for each of the 32 crystallographically unique Brnsted acid sites of a beta polymorph B zeolite unit cell with multiple Brnsted acid sites of comparable stability. However, one particular aluminum T-site with three favourable Brnsted site oxygens embedded in a straight 12-T channel wall provides multiple favourable proton transfer sites. Transition state searches around this aluminum site were performed to determine the barrier to reaction for both para and ortho nitration of toluene. A three-step process was assumed for the nitration of toluene with two organic intermediates: the - and -complexes. The rate limiting step is the proton transfer from the -complex to a zeolite Brnsted site. The barrier for this step in ortho nitration is shown to be nearly 2.5 times that in para nitration. This discrepancy appears to be due to steric constraints imposed by the curvature of the large 12-T pore channels of beta and the toluene methyl group in the ortho approach that are not present in the para approach. C1 [Andersen, Amity; Subramanian, Lalitha] Accelrys Inc, San Diego, CA USA. [Govind, Niranjan] Pacific NW Natl Lab, William R Wiley Environm Mol Sci Lab, Richland, WA 99352 USA. RP Andersen, A (reprint author), Accelrys Inc, San Diego, CA USA. EM aandersen@accelrys.com; nirigovind@pnl.gov RI Govind, Niranjan/D-1368-2011 NR 46 TC 3 Z9 3 U1 0 U2 6 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0892-7022 J9 MOL SIMULAT JI Mol. Simul. PY 2008 VL 34 IS 10-15 BP 1025 EP 1039 AR PII 904804424 DI 10.1080/08927020802191958 PG 15 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 375BR UT WOS:000261088400018 ER PT J AU Cygan, RT Brinker, CJ Nyman, MD Leung, K Rempe, SB AF Cygan, Randall T. Brinker, C. Jeffrey Nyman, May D. Leung, Kevin Rempe, Susan B. TI A molecular basis for advanced materials in water treatment SO MRS BULLETIN LA English DT Article ID REVERSE-OSMOSIS MEMBRANES; NANOFILTRATION MEMBRANES; MICELLAR FLOCCULATION; CHLORIDE COAGULANT; MESOPOROUS SILICA; VIRUS REMOVAL; ALGINIC ACID; MICROFILTRATION; CRYPTOSPORIDIUM; NANODEVICES AB A molecular-scale interpretation of interfacial processes is often downplayed in the analysis of traditional water treatment methods; however, such a fundamental approach is perhaps critical for the realization of enhanced performance in traditional desalination and related treatments, and in the development of novel water treatment technologies. Specifically, we examine in this article the molecular-scale processes that affect water and ion selectivity at the nanopore scale as inspired by nature, the behavior of a model polysaccharide as a biofilm, and the use of cluster-surfactant flocculants in viral sequestration. C1 [Cygan, Randall T.; Nyman, May D.] Sandia Natl Labs, Dept Geochem, Albuquerque, NM 87185 USA. [Rempe, Susan B.] Sandia Natl Labs, Comp Syst Biol Dept, Albuquerque, NM 87185 USA. [Leung, Kevin] Sandia Natl Labs, Surface & Interface Sci Dept, Albuquerque, NM 87185 USA. [Brinker, C. Jeffrey] Sandia Natl Labs, Self Assembled Mat Dept, Albuquerque, NM 87185 USA. RP Cygan, RT (reprint author), Sandia Natl Labs, Dept Geochem, POB 5800, Albuquerque, NM 87185 USA. EM rtcygan@sandia.gov; cjbrink@sandia.gov; man@sandia.gov; kleung@sandia.gov; slrempe@sandia.gov RI Rempe, Susan/H-1979-2011 NR 50 TC 8 Z9 8 U1 2 U2 12 PU MATERIALS RESEARCH SOC PI WARRENDALE PA 506 KEYSTONE DR, WARRENDALE, PA 15086 USA SN 0883-7694 J9 MRS BULL JI MRS Bull. PD JAN PY 2008 VL 33 IS 1 BP 42 EP 47 DI 10.1557/mrs2008.13 PG 6 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA 257ZW UT WOS:000252839200015 ER PT J AU Goldstein, B Coombs, D Faeder, JR Hlavacek, WS AF Goldstein, Byron Coombs, Daniel Faeder, James R. Hlavacek, William S. TI Kinetic Proofreading Model SO MULTICHAIN IMMUNE RECOGNITION RECEPTOR SIGNALING: FROM SPATIOTEMPORAL ORGANIZATION TO HUMAN DISEASE SE ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY LA English DT Article ID T-CELL-ACTIVATION; PROTEIN-TYROSINE KINASE; HIGH-AFFINITY RECEPTOR; SIGNAL-TRANSDUCTION; IGE RECEPTOR; SERIAL ENGAGEMENT; BINDING-KINETICS; TCR ENGAGEMENT; PHOSPHORYLATION; SYK AB Kinetic proofreading is an intrinsic property of the cell signaling process. It arises as a consequence of the multiple interactions that occur after a ligand triggers a receptor to initiate a signaling cascade and it ensures that false signals do not propagate to completion. In order for an active signaling complex to form after a ligand binds to a cell surface receptor, a sequence of binding and phosphorylation events must occur that are rapidly reversed if the ligand dissociates from the receptor. This gives rise to a mechanism by which cells can discriminate among ligands that bind to the same receptor but form ligand-receptor complexes with different lifetimes. We review experiments designed to test for kinetic proofreading and models that exhibit kinetic proofreading. C1 [Goldstein, Byron] Los Alamos Natl Lab, Div Theoret, Theoret Biol & Biophys Grp, Los Alamos, NM 87545 USA. RP Goldstein, B (reprint author), Los Alamos Natl Lab, Div Theoret, Theoret Biol & Biophys Grp, T-10 MS K710, Los Alamos, NM 87545 USA. EM bxg@lanl.gov OI Coombs, Daniel/0000-0002-8038-6278 FU National Institutes of Health [R37GM35556, RR18754]; Department of Energy [DE-AC52-06NA25396] FX The work was supported by grants R37GM35556 and RR18754 from the National Institutes of Health and by the Department of Energy through contract DE-AC52-06NA25396. NR 52 TC 9 Z9 9 U1 0 U2 6 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0065-2598 J9 ADV EXP MED BIOL JI Adv.Exp.Med.Biol. PY 2008 VL 640 BP 82 EP 94 PG 13 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA BIM95 UT WOS:000260962800008 PM 19065786 ER PT S AU Rosanvallon, S Grisolia, C Sharpe, P Andrew, P Ciattaglia, S Furlan, J Pitcher, CS Taylor, N AF Rosanvallon, S. Grisolia, C. Sharpe, P. Andrew, P. Ciattaglia, S. Furlan, J. Pitcher, C. S. Taylor, N. BE Mendonca, JT Resendes, DP Shukla, PK TI Control of dust inventory in tokamaks SO MULTIFACETS OF DUSTY PLASMA SE AIP Conference Proceedings LA English DT Proceedings Paper CT 5th International Conference on Physics of Dusty Plasmas CY MAY 18-23, 2008 CL Ponta Delgada, PORTUGAL SP Int Union Pure & Appl Phys, Fund Cienc Tecnol, Inst Plasmas Fusao Nucl, Inst Super Tecn, Univ Azores, Tourism Off Reg Govt Azores, Municipal Ponta Delgada DE ITER; safety; dust; diagnostic; erosion; removal ID WALL AB Particles with sizes ranging front 100 nut to 100 mu m are produced in tokamaks by the interaction of the plasma with the first wall materials and divertor. Dust has not yet been of a major concerti in existing tokamaks mainly because their quantities are small and these devices are not nuclear facilities. However, in ITER and in future reactors, they Could represent operational and potential safety issues. The aim of this paper is thus to describe the dust creation processes in the tokamak environment. The diagnostics and removal techniques that are needed to be implemented to measure and minimise the dust inventory are also presented. The integration of these techniques into it tokamak environment is also discussed. C1 [Rosanvallon, S.; Grisolia, C.] IRFM, DSM, CEA, Assoc Euratom CEA, F-13108 St Paul Les Durance, France. [Sharpe, P.] Idaho Natl Lab, Fus Safety Program, Idaho Falls, ID 83415 USA. [Andrew, P.; Ciattaglia, S.; Pitcher, C. S.; Taylor, N.] ITER Org, F-13108 St Paul Les Durance, France. [Furlan, J.] Fus Energy, Barcelona 08019, Spain. RP Rosanvallon, S (reprint author), IRFM, DSM, CEA, Assoc Euratom CEA, F-13108 St Paul Les Durance, 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 978-0-7354-0569-1 J9 AIP CONF PROC PY 2008 VL 1041 BP 51 EP + PG 2 WC Physics, Fluids & Plasmas SC Physics GA BIH02 UT WOS:000259440600011 ER PT S AU Rudakov, DL West, WP Groth, M Yu, JH Boedo, JA Bray, BD Brooks, NH Fenstermacher, ME Hollmann, EM Hyatt, AW Krasheninnikov, SI Lasnier, CJ Moyer, RA Pigarov, AY Smirnov, R Solomon, WM Wong, CPC AF Rudakov, D. L. West, W. P. Groth, M. Yu, J. H. Boedo, J. A. Bray, B. D. Brooks, N. H. Fenstermacher, M. E. Hollmann, E. M. Hyatt, A. W. Krasheninnikov, S. I. Lasnier, C. J. Moyer, R. A. Pigarov, A. Yu. Smirnov, R. Solomon, W. M. Wong, C. P. C. BE Mendonca, JT Resendes, DP Shukla, PK TI Dust studies in DIII-D tokamak SO MULTIFACETS OF DUSTY PLASMA SE AIP Conference Proceedings LA English DT Proceedings Paper CT 5th International Conference on Physics of Dusty Plasmas CY MAY 18-23, 2008 CL Ponta Delgada, PORTUGAL SP Int Union Pure & Appl Phys, Fund Cienc Tecnol, Inst Plasmas Fusao Nucl, Inst Super Tecn, Univ Azores, Tourism Off Reg Govt Azores, Municipal Ponta Delgada DE dust; DIII-D; DiMES; visible imaging; mie scattering ID CARBON DUST AB Studies of submicron dust using Mie scattering from Nd:YAG lasers and video data of micron to SUb-millimeter sized dust on DIII-D tokamak have provided the first data of dust sources and transport during tokamak discharges. During normal operation on DIII-D dust observation rates are low, a few events per discharge or less. The net carbon content of the dust corresponds to a carbon atom density a few orders of magnitude below the core impurity density. Statistical analysis of Mie data collected over months of operation reveal correlation of increased dust rate with increased heating power and impulsive wall loading due to edge localized modes, (ELMs) and disruptions. Generation of significant amount,, of dust by disruptions is confirmed by the camera data. However, dust production by disruptions alone is insufficient to account for estimated in-vessel dust inventory in DIII-D. After an extended entry vent, thousand of dust particles are observed by cameras in the first 2-3 plasma discharges. Individual particles moving at velocities tip to similar to 300 m/s, breakup of larger particles into pieces, and collisions of particles with walls are observed. After similar to 70 discharges, dust levels are reduced to a few events per discharge. In order to calibrate diagnostics and benchmark modeling, milligram amounts of micronsized carbon dust have been injected into DIII-D discharges, leading to the core carbon density increase by a factor of 2-3. Following injection, dust trajectories in the divertor are mostly in the toroidal direction, consistent with the ion drag force. Dust from the injection is observed in the outboard midplane by a fast framing camera. The observed trajectories and velocities of the dust particles are in qualitative agreement with modeling by the 3D DustT code. C1 [Rudakov, D. L.; Yu, J. H.; Boedo, J. A.; Hollmann, E. M.; Krasheninnikov, S. I.; Moyer, R. A.; Pigarov, A. Yu.; Smirnov, R.] Univ Calif San Diego, La Jolla, CA 92093 USA. [West, W. P.; Bray, B. D.; Brooks, N. H.; Hyatt, A. W.; Wong, C. P. C.] Gen Atom, San Diego, CA 92186 USA. [Groth, M.; Fenstermacher, M. E.; Lasnier, C. J.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Solomon, W. M.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Rudakov, DL (reprint author), Univ Calif San Diego, La Jolla, CA 92093 USA. RI Groth, Mathias/G-2227-2013; Smirnov, Roman/B-9916-2011; OI Smirnov, Roman/0000-0002-9114-5330; Solomon, Wayne/0000-0002-0902-9876 FU US Department of Energy [DE-FG02-07ER549I7, DE-FC02-04ER54698, DE-AC52-07NA27344, DE-AC02-76CH03073] FX This work was supported by the US Department of Energy under DE-FG02- 07ER549I7, DE-FC02-04ER54698, DE-AC52-07NA27344, and DE-AC02- 76CH03073. 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 978-0-7354-0569-1 J9 AIP CONF PROC PY 2008 VL 1041 BP 55 EP + PG 2 WC Physics, Fluids & Plasmas SC Physics GA BIH02 UT WOS:000259440600012 ER PT S AU Smirnov, RD Pigarov, AY Tanaka, Y Krasheninnikov, SI Mendis, DA Rognlien, TD Rosenberg, M Soboleva, TK Shukla, PK Brayf, BD Rudakov, D West, WP Roquemore, AL Skinner, CH AF Smirnov, R. D. Pigarov, A. Yu. Tanaka, Y. Krasheninnikov, S. I. Mendis, D. A. Rognlien, T. D. Rosenberg, M. Soboleva, T. K. Shukla, P. K. Brayf, B. D. Rudakov, D. West, W. P. Roquemore, A. L. Skinner, C. H. BE Mendonca, JT Resendes, DP Shukla, PK TI Dust in fusion plasmas: theory and modeling SO MULTIFACETS OF DUSTY PLASMA SE AIP Conference Proceedings LA English DT Proceedings Paper CT 5th International Conference on Physics of Dusty Plasmas CY MAY 18-23, 2008 CL Ponta Delgada, PORTUGAL SP Int Union Pure & Appl Phys, Fund Cienc Tecnol, Inst Plasmas Fusao Nucl, Inst Super Tecn, Univ Azores, Tourism Off Reg Govt Azores, Municipal Ponta Delgada DE dust; DUSTT code; dust dynamics; dust transport ID FLOWING PLASMA; ION COLLECTION; DIII-D; DEVICES; OPERATION; DYNAMICS; TOKAMAKS; PARTICLE; SAFETY; SPHERE AB Dust may have a large impact on ITER-scale plasma experiments including both safety and performance issues. However, the physics of dust in fusion plasmas is very complex and multifaceted. Here, we discuss different aspects of dust dynamics including dust-plasma, and dust-surface interactions. We consider the models of dust charging, heating, evaporation/sublimation, dust collision with material walls, etc., which are suitable for the conditions of fusion plasmas. The physical models of all these processes have been incorporated into the DUST Transport (DUSTT) code. Numerical simulations demonstrate that dust particles are very mobile and accelerate to large velocities due to the ion drag force (cruise speed >100 m/s). Deep penetration of dust particles toward the plasma core is predicted. It is shown that DUSTT is capable of reproducing many features of recent dust-related experiments, but much more work is still needed. C1 [Smirnov, R. D.; Pigarov, A. Yu.; Krasheninnikov, S. I.; Mendis, D. A.; Rosenberg, M.; Rudakov, D.] Univ Calif San Diego, La Jolla, CA 92093 USA. [Tanaka, Y.] Kanazawa Univ, Kanazawa, Ishikawa, Japan. [Rognlien, T. D.] Lawrence Livermore Natl Lab, Livermore, CA USA. [Soboleva, T. K.] Univ Nacl Autonoma Mexico, ICN, Mexico City, DF, Mexico. [Shukla, P. K.] Ruhr Univ Bochum, Bochum, Germany. [Brayf, B. D.; West, W. P.] Gen Atom, San Diego, CA USA. [Roquemore, A. L.; Skinner, C. H.] Princeton Plasma Phys Lab, Princeton, NJ USA. RP Smirnov, RD (reprint author), Univ Calif San Diego, La Jolla, CA 92093 USA. RI Smirnov, Roman/B-9916-2011; Tanaka, Yasunori/E-6609-2015 OI Smirnov, Roman/0000-0002-9114-5330; Tanaka, Yasunori/0000-0002-0796-2507 FU USDOE [DEFG02-04ER54852, DGAPA INI 19408-3] FX This work was supported in part by the US DoE under the USDOE grant DEFG02-04ER54852 and under the grant DGAPA INI 19408-3, Mexico. NR 17 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 978-0-7354-0569-1 J9 AIP CONF PROC PY 2008 VL 1041 BP 59 EP + PG 2 WC Physics, Fluids & Plasmas SC Physics GA BIH02 UT WOS:000259440600013 ER PT S AU Ticos, CM Wang, ZH Wurden, GA AF Ticos, Catalin M. Wang, Zhehui Wurden, Glen. A. BE Mendonca, JT Resendes, DP Shukla, PK TI A new parameter regime for dust in plasma: the case of dense and supersonic plasma flows SO MULTIFACETS OF DUSTY PLASMA SE AIP Conference Proceedings LA English DT Proceedings Paper CT 5th International Conference on Physics of Dusty Plasmas CY MAY 18-23, 2008 CL Ponta Delgada, PORTUGAL SP Int Union Pure & Appl Phys, Fund Cienc Tecnol, Inst Plasmas Fusao Nucl, Inst Super Tecn, Univ Azores, Tourism Off Reg Govt Azores, Municipal Ponta Delgada DE dusty plasmas; plasma flow; hypervelocity dust AB The co-existence between charged micron-size particulates of matter and plasma electrons and ions can lead to interesting physics phenomena. Some of the most spectacular observations in laboratory low ionized gases include the formation of aligned dust structures, the propagation of dust waves or self-organization leading to dust voids. Here, the dust dynamics is established by the forces of gravity, of electrostatic interaction With electric fields within the plasma, of friction with the neutral gas, and by the Coulomb repulsion between grains. Measurements of dust trajectories have been carried out in situ when the plasma density is about 6-7 orders of magnitude higher than in typical laboratory dusty plasmas, i.e. similar to 10(22) m(-3), and the ion temperature is a few eV. The plasma flows at speeds of the order of 20-60 km/s. Two observed features characterize dust in this new plasma regime: the plasma drag force dominates over all other forces acting on the grains and the microparticles tire heated to temperatures sufficientlly high, to become self-illuminated. Simultaneous observation at different moments in time of up to a few hundred flying dust grains has been possible due to the timing capabilities of a high-speed camera equipped with a telephoto lens. Dust speed of a few km/s and accelerations of similar to 10(5). 10(6) m/s(2) have been inferred using the time-of-flight technique. Among the applications of hypervelocity dust are local diagnostics performed on hot plasmas, interstellar propulsion or simulation of meteorite impacts. C1 [Ticos, Catalin M.] Natl Inst Laser Plasma & Radiat Phys, Bucharest, Romania. [Ticos, Catalin M.; Wang, Zhehui; Wurden, Glen. A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Ticos, CM (reprint author), Natl Inst Laser Plasma & Radiat Phys, Bucharest, Romania. RI Ticos, Catalin/F-1677-2011; Wurden, Glen/A-1921-2017 OI Wurden, Glen/0000-0003-2991-1484 FU U.S. Department of Energy through Office of Science [DE-AC52-06NA25396]; Romanian National University Research Council (CNCSIS) [RP-10, PNCDI2] FX This work was supported in part by the U.S. Department of Energy, under Contract No. DE-AC52-06NA25396, through the Office of Science, and by the Romanian National University Research Council (CNCSIS) under contract RP-10, within the PNCDI2 program. 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 978-0-7354-0569-1 J9 AIP CONF PROC PY 2008 VL 1041 BP 63 EP + PG 2 WC Physics, Fluids & Plasmas SC Physics GA BIH02 UT WOS:000259440600014 ER PT S AU Wang, ZH Mansfield, DK Roquemore, LA Ticos, CM Wurden, GA AF Wang, Zhehui Mansfield, Dennis K. Roquemore, Lane A. Ticos, Catalin M. Wurden, Glen A. BE Mendonca, JT Resendes, DP Shukla, PK TI Applications and progress of dust injection to fusion energy SO MULTIFACETS OF DUSTY PLASMA SE AIP Conference Proceedings LA English DT Proceedings Paper CT 5th International Conference on Physics of Dusty Plasmas CY MAY 18-23, 2008 CL Ponta Delgada, PORTUGAL SP Int Union Pure & Appl Phys, Fund Cienc Tecnol, Inst Plasmas Fusao Nucl, Inst Super Tecn, Univ Azores, Tourism Off Reg Govt Azores, Municipal Ponta Delgada DE dust injection; diagnostics; fusion energy applications AB Three regimes of dust injection are proposed for different applications to fusion energy. In the 'low-speed' regime (< 5 km/s), basic dust transport study, edge plasma diagnostics, edge-localized-mode (ELM) pacing in magnetic fusion devices call be realized by injecting dust of known properties into today's fusion experiments. ELM pacing, as all alternative to mini-pellet injection, is a promising scheme to prevent disruptions and type I ELM's that can cause catastrophic damage to fusion devices. Different schemes are available to inject dust. In the 'intermediate-speed regime (10 - 200 km/s), possible applications of dust injection include fueling of the next-step fusion devices, core-diagnostics of the next-step fusion devices, and compression of plasma and solid targets to aid fusion energy production. Promising laboratory results of dust moving at 10-50 km/s do exist. Significant advance in this regime may be expected in the near term to achieve higher dust speeds. In the 'high-speed regime (> 500 km/s). dust injection call potentially be used to directly produce fusion energy through impact. Ideas on how to achieve these extremely high speeds are mostly on paper. No plan exists today to realize them in laboratory. Some experimental results, including electrostatic, electromagnetic, gas-dragged, plasma-dragged, and laser-ablation-based acceleration, are summarized and compared. Some features and limitations of the different acceleration methods will be discussed. A necessary component of all dust injectors, is the dust dropper (also known as dust dispenser). A computer-controlled piezoelectric crystals has been developed to dropped dust in a systematic and reproducible manner. Particle fluxes ranges front a few tens of particles per second tip to thousands of particles per second by this simple device. C1 [Wang, Zhehui; Wurden, Glen A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Mansfield, Dennis K.; Roquemore, Lane A.] Princeton Plasma Phys Lab, Princeton, NJ USA. [Ticos, Catalin M.] Natl Inst Laser Plasma & Radiat Phys, Bucharest, Romania. RP Wang, ZH (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RI Ticos, Catalin/F-1677-2011; Wurden, Glen/A-1921-2017 OI Wurden, Glen/0000-0003-2991-1484 FU U.S. DoE through the Office of Science [DE-AC52-06NA25396]; Romanian National University Research Council (CNCSIS) within the PNCDI2 program [RP-IO] FX This work was supported in part by the U.S. DoE, under Contract No. DE-AC52-06NA25396, through the Office of Science, and by the Romanian National University Research Council (CNCSIS) under contract RP-IO, within the PNCDI2 program. 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 978-0-7354-0569-1 J9 AIP CONF PROC PY 2008 VL 1041 BP 135 EP + PG 2 WC Physics, Fluids & Plasmas SC Physics GA BIH02 UT WOS:000259440600030 ER PT B AU Eggleton, PP Kisseleva-Eggleton, L AF Eggleton, P. P. Kisseleva-Eggleton, L. BE Hubrig, S PetrGotzens, M Tokovinin, A TI Evolutionary processes in multiple systems SO MULTIPLE STARS ACROSS THE H-R DIAGRAM SE ESO ASTROPHYSICS SYMPOSIA LA English DT Proceedings Paper CT ESO Workshop on Multiple Stars Across the H-R Diagram CY JUL 12-15, 2005 CL Garching, GERMANY SP ESO ID TRIPLE STARS; BINARY; TAURI; SPECTROSCOPY; ORIENTATION; COMPANION; ALGOL; DWARF AB There are several ways in which triple stars can evolve in somewhat unusual ways. We discuss two: situations where Case A Roche-lobe overflow, followed by a merger, can produce anomalous wide binaries such as gamma Per; and Kozai cycles in triples with non-parallel orbits, which can produce merged rapidly-rotating stars like (we suggest) AB Dor, and which can also lead to the delayed ejection of one component of a multiple, as may have been observed in T Tau in 1998. C1 [Eggleton, P. P.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Kisseleva-Eggleton, L.] California State Univ, Maritime Acad, Vallejo, CA USA. RP Eggleton, PP (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. EM ppe@igpp.ucllnl.org; lkisseleva@csum.edu FU U.S. Department of Energy, National Nuclear Security Administration by the University of California, Lawrence Livermore National Laboratory [W-7405-Eng-48] FX This work was performed under the auspices of the U.S. Department of Energy, National Nuclear Security Administration by the University of California, Lawrence Livermore National Laboratory under contract No. W-7405-Eng-48. L.K.-E. is grateful to the AAS and the California Maritime Academy for assistance with travel. NR 19 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY BN 978-3-540-74744-4 J9 ESO ASTROPHY SYMP PY 2008 BP 1 EP + DI 10.1007/978-3-540-74745-1_1 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BHA31 UT WOS:000251799300001 ER PT S AU Challa, SR Truesdell, R Vorobieff, P Marnmoll, A van Swol, F AF Challa, Sivakurnar R. Truesdell, Richard Vorobieff, Peter Marnmoll, Andrea van Swol, Frank BE Paulino, GH Pindera, MJ Dodds, RH Rochinha, FA Dave, EV Chen, L TI Shear flow on super-hydrophobic surfaces SO MULTISCALE AND FUNCTIONALLY GRADED MATERIALS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th International Conference on Multiscale and Functionally Graded Materials CY OCT 15-18, 2006 CL Oahu, HI SP Univ Illinois, Urbana Champaign, Univ Virginia, Fed Univ Rio de Janeiro DE super-hydrophobicity; shear flow; molecular dynamics AB Super-hydrophobic surfaces, which exhibit large contact angles, can give rise to slip flow of aqueous fluids. We present our work on shear flow of atomistic fluids over simple super-hydrophobic surfaces. Molecular dynamic simulations are employed to investigate the flow field of fluid between two parallel surfaces, one of which is moving. Exploring a range of fluid thermodynamic state points, we demonstrate the influence of fluid phase and structure near the surfaces on prevalence, and degree, of slip at the super-hydrophobic surface. C1 [Challa, Sivakurnar R.; van Swol, Frank] Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA. [Truesdell, Richard; Vorobieff, Peter; Marnmoll, Andrea] Univ New Mexico, Albuquerque, NM 87131 USA. [van Swol, Frank] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. RP Challa, SR (reprint author), Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA. OI Vorobieff, Peter/0000-0003-0631-7263 FU UNM Center for High Performance Computing [2005006]; DOE office of Basic Energy Sciences, Division of Material Sciences and Engineering; DOE Office of Science; Sandia Corporation; LockheedMartin Company; U.S. DOE [DE-AC04-94AL85000] FX We acknowledge the computational support from the UNM Center for High Performance Computing under Grant No. 2005006. This work is supported in part by the DOE office of Basic Energy Sciences, Division of Material Sciences and Engineering, the DOE Office of Science s Advanced Scientific Computing Research (ASCR) program in Applied Mathematical Sciences, and by Sandia s LDRD program.Sandia is a multiprogram laboratory operated by Sandia Corporation, a LockheedMartin Company, for the U.S. DOE under Contract No. DE-AC04-94AL85000. NR 12 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 978-0-7354-0492-2 J9 AIP CONF PROC PY 2008 VL 973 BP 912 EP + PG 2 WC Engineering, Manufacturing; Materials Science, Multidisciplinary; Mathematics, Applied; Materials Science, Characterization & Testing SC Engineering; Materials Science; Mathematics GA BHN30 UT WOS:000254471400146 ER PT S AU Ingber, MS Zabaleta, MU Graham, AL Challa, SR van Swol, F AF Ingber, Marc S. Zabaleta, Milena Usablaga Graham, Alan L. Challa, Sivakurnar R. van Swol, Frank BE Paulino, GH Pindera, MJ Dodds, RH Rochinha, FA Dave, EV Chen, L TI On the interplay between hydrodynamic and solvation interactions SO MULTISCALE AND FUNCTIONALLY GRADED MATERIALS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th International Conference on Multiscale and Functionally Graded Materials CY OCT 15-18, 2006 CL Oahu, HI SP Univ Illinois, Urbana Champaign, Univ Virginia, Fed Univ Rio de Janeiro DE force-microscopy; hydrodynamics; simulations ID SURFACE AB We report on classical molecular dynamics simulations of large spheres moving toward a flat substrate and large spheres moving toward each other. The simulations are designed to investigate hydrodynamics at the molecular scale. They also address a familiar question underlying force microscope measurements: how does one properly separate hydrodynamic forces from hydration forces? We illustrate a new decomposition approach to extract the static and dynamic components from approaching- and receding-force curves that are obtained from simulations or experiments. We compare the dynamic force contribution to hydrodynamic predictions, and discuss the effects of surface roughness. C1 [Ingber, Marc S.; Zabaleta, Milena Usablaga] Univ New Mexico, Dept Mech Engn, Albuquerque, NM 87131 USA. [Graham, Alan L.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Challa, Sivakurnar R.; van Swol, Frank] Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA. [van Swol, Frank] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. RP Ingber, MS (reprint author), Univ New Mexico, Dept Mech Engn, Albuquerque, NM 87131 USA. FU UNM Center for High Performance Computing (HPC@UNM); DOE Office of Science; Sandia Corporation; Lockheed-Martin Company; U.S. DOE [DE-AC04-94AL85000] FX We would like to thank acknowledge the computational support by the UNM Center for High Performance Computing (HPC@UNM). This work is supported in part by the DOE Office of Science's Advanced Scientific Computing research (ASCR) program in Applied mathematical Sciences. Sandia is a multi-program laboratory operated by Sandia Corporation, a Lockheed-Martin Company, for the U.S. DOE under Contract No.DE-AC04-94AL85000. NR 6 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 978-0-7354-0492-2 J9 AIP CONF PROC PY 2008 VL 973 BP 919 EP + PG 2 WC Engineering, Manufacturing; Materials Science, Multidisciplinary; Mathematics, Applied; Materials Science, Characterization & Testing SC Engineering; Materials Science; Mathematics GA BHN30 UT WOS:000254471400147 ER PT J AU Parks, ML Bochev, PB Lehoucq, RB AF Parks, Michael L. Bochev, Pavel B. Lehoucq, Richard B. TI Connecting atomistic-to-continuum coupling and domain decomposition SO MULTISCALE MODELING & SIMULATION LA English DT Article DE atomistic-to-continuum; alternating Schwarz; lattice statics ID FINITE-ELEMENT; SIMULATION; MECHANICS; SOLIDS; FLUID; APPROXIMATION; DEFECTS; SCIENCE; MODELS; FLOW AB Many atomistic/continuum coupling algorithms utilize an overlapping subdomain method, where boundary data for local solves in atomistic and discretized continuum subdomains is provided from local solves in neighboring subdomains. Such coupling algorithms are closely related to the classical alternating Schwarz domain decomposition method, although little to no convergence or error analysis exists for such methods in an atomistic/continuum framework. We consider a specific alternating Schwarz algorithm for coupling a nonlocal atomistic model with a local finite element model and carry out a convergence and error analysis along with supporting numerical experiments. C1 [Parks, Michael L.; Bochev, Pavel B.; Lehoucq, Richard B.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Parks, ML (reprint author), Sandia Natl Labs, POB 5800,MS 1320, Albuquerque, NM 87185 USA. EM mlparks@sandia.gov; pbboche@sandia.gov; rblehou@sandia.gov RI Parks, Michael/A-2878-2008 NR 40 TC 30 Z9 30 U1 0 U2 1 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 1540-3459 J9 MULTISCALE MODEL SIM JI Multiscale Model. Simul. PY 2008 VL 7 IS 1 BP 362 EP 380 DI 10.1137/070682848 PG 19 WC Mathematics, Interdisciplinary Applications; Physics, Mathematical SC Mathematics; Physics GA 309HV UT WOS:000256452200016 ER PT J AU Badia, S Parks, M Bochev, P Gunzburger, M Lehoucq, R AF Badia, Santiago Parks, Michael Bochev, Pavel Gunzburger, Max Lehoucq, Richard TI On atomistic-to-continuum coupling by blending SO MULTISCALE MODELING & SIMULATION LA English DT Article DE atomistic-to-continuum coupling; blending methods; multiscale simulation; coupling methods ID APPROXIMATION; DEFECTS; SOLIDS; FORCE; MODEL AB A mathematical framework for the coupling of atomistic and continuum models by blending them over a subdomain subject to a constraint is developed. Using the framework, four classes of atomistic-to-continuum (AtC) blending methods are established, their consistency is studied, and their relative merits are discussed. In addition, the framework helps clarify the origin of ghost forces and formalizes the notion of a patch test. Numerical experiments with the AtC methods are used to illustrate the theoretical results. C1 [Badia, Santiago] Univ Politecn Cataluna, CIMNE, ES-08034 Barcelona, Spain. [Badia, Santiago; Parks, Michael; Bochev, Pavel; Lehoucq, Richard] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Gunzburger, Max] Florida State Univ, Sch Computat Sci, Tallahassee, FL 32306 USA. RP Badia, S (reprint author), Sandia Natl Labs, POB 5800,MS 1320, Albuquerque, NM 87185 USA. EM sbadia@cimne.upc.edu; mlparks@sandia.gov; pbboche@sandia.gov; gunzburg@csit.fsu.edu; rblehou@sandia.gov RI Badia, Santiago/L-8565-2014 OI Badia, Santiago/0000-0003-2391-4086 NR 18 TC 52 Z9 52 U1 0 U2 7 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 1540-3459 J9 MULTISCALE MODEL SIM JI Multiscale Model. Simul. PY 2008 VL 7 IS 1 BP 381 EP 406 DI 10.1137/07069969X PG 26 WC Mathematics, Interdisciplinary Applications; Physics, Mathematical SC Mathematics; Physics GA 309HV UT WOS:000256452200017 ER PT J AU Givon, D Kevrekidis, IG AF Givon, Dror Kevrekidis, Ioannis G. TI MULTISCALE INTEGRATION SCHEMES FOR JUMP-DIFFUSION SYSTEMS SO MULTISCALE MODELING & SIMULATION LA English DT Article DE jump-diffusion processes; multiscale integration schemes; averaging ID STOCHASTIC DIFFERENTIAL-SYSTEMS; PROJECTIVE INTEGRATION; STRONG-CONVERGENCE; CHEMICAL-KINETICS; SIMULATION; EQUATIONS; DYNAMICS AB We study a two-time-scale system of jump-diffusion stochastic differential equations. We analyze a class of multiscale integration methods for these systems, which, in the spirit of [E. Vanden-Eijnden, Commun. Math. Sci., 1 (2003), pp. 385-391], consist of a hybridization between a standard solver for the slow components and short runs for the fast dynamics, which are used to estimate the effect that the fast components have on the slow ones. We obtain explicit bounds for the discrepancy between the results of the multiscale integration method and the slow components of the original system. C1 [Givon, Dror] Univ Calif Berkeley, Dept Math, Berkeley, CA 94720 USA. [Givon, Dror] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Kevrekidis, Ioannis G.] Princeton Univ, Dept Chem Engn PACM & Math, Princeton, NJ 08544 USA. RP Givon, D (reprint author), Univ Calif Berkeley, Dept Math, Berkeley, CA 94720 USA. EM givon@math.berkeley.edu; yannis@princeton.edu NR 33 TC 3 Z9 3 U1 0 U2 2 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 1540-3459 J9 MULTISCALE MODEL SIM JI Multiscale Model. Simul. PY 2008 VL 7 IS 2 BP 495 EP 516 DI 10.1137/070693473 PG 22 WC Mathematics, Interdisciplinary Applications; Physics, Mathematical SC Mathematics; Physics GA 371QW UT WOS:000260847400001 ER PT J AU Caflisch, R Wang, CM Dimarco, G Cohen, B Dimits, A AF Caflisch, Russel Wang, Chiaming Dimarco, Giacomo Cohen, Bruce Dimits, Andris TI A HYBRID METHOD FOR ACCELERATED SIMULATION OF COULOMB COLLISIONS IN A PLASMA SO MULTISCALE MODELING & SIMULATION LA English DT Article DE Coulomb collisions; plasma; simulation; hybrid method; bump on tail; thermalization ID FOKKER-PLANCK EQUATION; PARTICLE-SIMULATION; ALGORITHMS AB If the collisional time scale for Coulomb collisions is comparable to the characteristic time scales for a plasma, then simulation of Coulomb collisions may be important for computation of kinetic plasma dynamics. This can be a computational bottleneck because of the large number of simulated particles and collisions (or phase-space resolution requirements in continuum algorithms), as well as the wide range of collision rates over the velocity distribution function. This paper considers Monte Carlo simulation of Coulomb collisions using the binary collision models of Takizuka and Abe and of Nanbu. It presents a hybrid method for accelerating the computation of Coulomb collisions. The hybrid method represents the velocity distribution function as a combination of a thermal component (a Maxwellian distribution) and a kinetic component (a set of discrete particles). Collisions between particles from the thermal component preserve the Maxwellian; collisions between particles from the kinetic component are performed using the method of Takizuka and Abe or of Nanbu. Collisions between the kinetic and thermal components are performed by sampling a particle from the thermal component and selecting a particle from the kinetic component. Particles are also transferred between the two components according to thermalization and dethermalization probabilities, which are functions of phase space. C1 [Caflisch, Russel; Wang, Chiaming] Univ Calif Los Angeles, Dept Math, Los Angeles, CA 90095 USA. [Dimarco, Giacomo] Univ Ferrara, Dept Math, I-44100 Ferrara, Italy. [Cohen, Bruce; Dimits, Andris] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Caflisch, R (reprint author), Univ Calif Los Angeles, Dept Math, Los Angeles, CA 90095 USA. EM caflisch@math.ucla.edu; cmwang@math.ucla.edu; dmrgcm@unife.it; bcohen@llnl.gov; dimits1@llnl.gov OI Dimarco, Giacomo/0000-0001-6186-3633 FU U.S. DOE by the University of California, Los Angeles [DE-FG02-05ER25710]; Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; Office of Advanced Scientific Computing Research, DOE Office of Science FX Received by the editors October 9, 2007; accepted for publication (in revised form) May 5, 2008; published electronically August 20, 2008. This work was performed under the auspices of the U.S. DOE by the University of California, Los Angeles, under grant DE-FG02-05ER25710, and by Lawrence Livermore National Laboratory under contract DE-AC52-07NA27344. This work was supported by the Office of Advanced Scientific Computing Research, DOE Office of Science, under the Multiscale Initiative Program. The U.S. Government retains a nonexclusive, royalty-free license to publish or reproduce the published form in 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 16 TC 16 Z9 16 U1 0 U2 2 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 1540-3459 EI 1540-3467 J9 MULTISCALE MODEL SIM JI Multiscale Model. Simul. PY 2008 VL 7 IS 2 BP 865 EP 887 DI 10.1137/070704939 PG 23 WC Mathematics, Interdisciplinary Applications; Physics, Mathematical SC Mathematics; Physics GA 371QW UT WOS:000260847400016 ER PT J AU Williams, SA Bell, JB Garcia, AL AF Williams, Sarah A. Bell, John B. Garcia, Alejandro L. TI ALGORITHM REFINEMENT FOR FLUCTUATING HYDRODYNAMICS SO MULTISCALE MODELING & SIMULATION LA English DT Article DE stochastic Navier-Stokes equations; multiscale hybrid algorithm; computational fluid dynamics; direct simulation Monte Carlo; adaptive mesh refinement AB This paper introduces an adaptive mesh and algorithm refinement method for fluctuating hydrodynamics. This particle-continuum hybrid simulates the dynamics of a compressible fluid with thermal fluctuations. The particle algorithm is direct simulation Monte Carlo (DSMC), a molecular-level scheme based on the Boltzmann equation. The continuum algorithm is based on the Landau-Lifshitz Navier-Stokes (LLNS) equations, which incorporate thermal fluctuations into macroscopic hydrodynamics by using stochastic fluxes. It uses a recently developed solver for the LLNS equations based on third-order Runge-Kutta. We present numerical tests of systems in and out of equilibrium, including time-dependent systems, and demonstrate dynamic adaptive refinement by the computation of a moving shock wave. Mean system behavior and second moment statistics of our simulations match theoretical values and benchmarks well. We find that particular attention should be paid to the spectrum of the flux at the interface between the particle and continuum methods, specifically for the nonhydrodynamic (kinetic) time scales. C1 [Williams, Sarah A.] Univ N Carolina, Dept Math, Chapel Hill, NC 27599 USA. [Bell, John B.] Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Computat Sci & Engn, Berkeley, CA 94720 USA. [Garcia, Alejandro L.] San Jose State Univ, Dept Phys, San Jose, CA 95192 USA. RP Williams, SA (reprint author), Univ N Carolina, Dept Math, Phillips Hall CB 3250, Chapel Hill, NC 27599 USA. EM saw@email.unc.edu; jbbell@lbl.gov; algarcia@algarcia.org FU DOE Office of Mathematics, Information, and Computational Sciences under the U.S. Department of Energy [DE-AC02-05CH11231] FX This work was supported in part by the Applied Mathematics Program of the DOE Office of Mathematics, Information, and Computational Sciences under the U.S. Department of Energy under contract DE-AC02-05CH11231. NR 56 TC 18 Z9 18 U1 1 U2 19 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA SN 1540-3459 J9 MULTISCALE MODEL SIM JI Multiscale Model. Simul. PY 2008 VL 6 IS 4 BP 1256 EP 1280 DI 10.1137/070696180 PG 25 WC Mathematics, Interdisciplinary Applications; Physics, Mathematical SC Mathematics; Physics GA V18ZM UT WOS:000208042700007 ER PT J AU Sankaranarayanan, K Wassom, JS AF Sankaranarayanan, K. Wassom, J. S. TI Reflections on the impact of advances in the assessment of genetic risks of exposure to ionizing radiation on international radiation protection recommendations between the mid-1950s and the present SO MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH LA English DT Review DE ionizing radiation; genetic risk assessment; radiation protection; ICRP; UNSCEAR; history of science ID SPONTANEOUS MUTATION-RATES; ATOMIC-BOMB SURVIVORS; LINEAR-NO-THRESHOLD; MULTIFACTORIAL DISEASES; RADIOLOGICAL PROTECTION; MENDELIAN DISEASES; HUMAN-POPULATIONS; IMPAIRED LIFE; DOSE RATE; COMPONENT AB Efforts at protecting people against the harmful effects of radiation had their beginnings in the early 1900s with the intent of protecting individuals in medicine and associated professions. Such efforts remain vital for all of us more than 100 years later as part of our 'learning to live with ionizing radiation.' The field of radiation protection has evolved slowly over time with advances in knowledge on hereditary (i.e., genetic) and carcinogenic effects of radiation continually improving our ability to make informed judgments about how best to balance risks against benefits of radiation exposure. This paper examines just one aspect of these efforts, namely, how advances in knowledge of genetic effects of radiation have impacted on the recommendations of the International Commission on Radiological Protection (ICRP). The focus is on the period from the mid-1950s (when genetic risk estimates were first made) to 2007. This article offers a detailed historical analysis and personal perspective, and concludes with a synopsis of key developments in radiation protection. (c) 2007 Elsevier B.V. All rights reserved. C1 [Sankaranarayanan, K.] Leiden Univ, Med Ctr, Dept Toxicogenet, NL-2300 RC Leiden, Netherlands. [Wassom, J. S.] Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA. RP Sankaranarayanan, K (reprint author), Lange Voort 235, NL-2343 CE Oegstgeest, Netherlands. EM sankaranarayan@kpnplanet.ni NR 100 TC 7 Z9 7 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1383-5742 J9 MUTAT RES-REV MUTAT JI Mutat. Res.-Rev. Mutat. Res. PD JAN-FEB PY 2008 VL 658 IS 1-2 BP 1 EP 27 DI 10.1016/j.mrrev.2007.10.004 PG 27 WC Biotechnology & Applied Microbiology; Genetics & Heredity; Toxicology SC Biotechnology & Applied Microbiology; Genetics & Heredity; Toxicology GA 269QV UT WOS:000253664900001 PM 18096428 ER PT J AU Fan, ZY Ho, JC Jacobson, ZA Yerushalmi, R Alley, RL Razavi, H Javey, A AF Fan, Zhiyong Ho, Johnny C. Jacobson, Zachery A. Yerushalmi, Role Alley, Robert L. Razavi, Haleh Javey, Ali TI Wafer-scale assembly of highly ordered semiconductor nanowire arrays by contact printing SO NANO LETTERS LA English DT Article ID FIELD-EFFECT TRANSISTORS; CARBON NANOTUBES; GERMANIUM NANOWIRES; BUILDING-BLOCKS; ALIGNED ARRAYS; LOGIC GATES; ELECTRONICS; INTEGRATION; HETEROSTRUCTURES; DEVICES AB Controlled and uniform assembly of "bottom-up" nanowire (NW) materials with high scalability presents one of the significant bottleneck challenges facing the integration of nanowires for electronic applications. Here, we demonstrate wafer-scale assembly of highly ordered, dense, and regular arrays of NWs with high uniformity and reproducibility through a simple contact printing process. The assembled NW pitch is shown to be readily modulated through the surface chemical treatment of the receiver substrate, with the highest density approaching similar to 8 Wpm, similar to 95% directional alignment, and wafer-scale uniformity. Such fine control in the assembly is attained by applying a lubricant during the contact printing process which significantly minimizes the NW-NW mechanical interactions, therefore enabling well-controlled transfer of nanowires through surface chemical binding interactions. Furthermore, we demonstrate that our printing approach enables large-scale integration of NW arrays for various device structures on both rigid silicon and flexible plastic substrates, with a controlled semiconductor channel width ranging from a single NW (similar to 10 nm) up to similar to 250 mu m, consisting of a parallel array of over 1250 NWs and delivering over 1 mA of ON current. C1 [Fan, Zhiyong; Ho, Johnny C.; Jacobson, Zachery A.; Yerushalmi, Role; Alley, Robert L.; Razavi, Haleh; Javey, Ali] Univ Calif Berkeley, Dept Elect Engn & Comp Sci, Berkeley, CA 94720 USA. [Fan, Zhiyong; Ho, Johnny C.; Jacobson, Zachery A.; Yerushalmi, Role; Javey, Ali] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Javey, A (reprint author), Univ Calif Berkeley, Dept Elect Engn & Comp Sci, Berkeley, CA 94720 USA. EM ajavey@eecs.berkeley.edu RI Fan, Zhiyong/C-4970-2012; 李, 府中/H-4357-2011; Ho, Johnny/K-5275-2012; Javey, Ali/B-4818-2013; OI Ho, Johnny/0000-0003-3000-8794; Fan, Zhiyong/0000-0002-5397-0129 NR 32 TC 310 Z9 311 U1 13 U2 138 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1530-6984 J9 NANO LETT JI Nano Lett. PD JAN PY 2008 VL 8 IS 1 BP 20 EP 25 DI 10.1021/nl071626r 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 249VI UT WOS:000252257700004 PM 17696563 ER PT J AU Prasher, R Tong, T Majumdar, A AF Prasher, Ravi Tong, Tao Majumdar, Arun TI Approximate analytical models for phonon specific heat and ballistic thermal conductance of nanowires SO NANO LETTERS LA English DT Article ID CARBON NANOTUBES; QUANTUM WIRES; CONDUCTIVITY AB We introduce simple approximate analytical models for phonon specific heat and ballistic thermal conductance of nanowires. The analytical model is in excellent agreement with the detailed numerical calculations based on the solution of the elastic wave equation and is also in good agreement with the ballistic thermal conductance data by Schwab et al. (Nature 2000, 404, 974). Finally, we propose a demarcating criterion in terms of temperature, dimension, and material properties to capture the dimensional crossover from a three-dimensional (3D) bulk system to a one-dimensional (1D) system. C1 [Prasher, Ravi] Intel Corp, Chandler, AZ 85226 USA. [Prasher, Ravi] Arizona State Univ, Dept Mech & Aerosp Engn, Tempe, AZ 85281 USA. [Tong, Tao; Majumdar, Arun] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA. [Majumdar, Arun] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Prasher, R (reprint author), Intel Corp, CH5-157,5000 W Chandler Blvd, Chandler, AZ 85226 USA. EM ravi.s.prasher@intel.com NR 16 TC 39 Z9 39 U1 1 U2 12 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1530-6984 J9 NANO LETT JI Nano Lett. PD JAN PY 2008 VL 8 IS 1 BP 99 EP 103 DI 10.1021/nl0721665 PG 5 WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA 249VI UT WOS:000252257700017 PM 18085809 ER PT J AU Wegner, D Yamachika, R Wang, Y Brar, VW Bartlett, BM Long, JR Crommie, MF AF Wegner, Daniel Yamachika, Ryan Wang, Yayu Brar, Victor W. Bartlett, Bart M. Long, Jeffrey R. Crommie, Michael F. TI Single-molecule charge transfer and bonding at an organic/inorganic interface: Tetracyanoethylene on noble metals SO NANO LETTERS LA English DT Article ID SCANNING TUNNELING MICROSCOPE; CUBIC TETRACYANOETHYLENE; MAGNETS; SURFACE; CU(111); SPECTROSCOPY; REFINEMENT; CHEMISTRY; ATOMS; TCNE AB We have studied the structural and electronic properties of tetracyanoethylene (TCNE) molecules on different noble-metal surfaces using scanning tunneling spectroscopy and density functional theory. Striking differences are observed in the TCNE behavior on Au, Ag, and Cu substrates in the submonolayer limit. We explain our findings by a combination of charge-transfer and lattice-matching properties for TCNE across substrates that results in a strong variation of molecule-molecule and molecule-substrate interactions. These results have significant implications for future organic/inorganic nanoscopic devices incorporating molecule-based magnetism. C1 [Wegner, Daniel; Yamachika, Ryan; Wang, Yayu; Brar, Victor W.; Crommie, Michael F.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Wegner, Daniel; Yamachika, Ryan; Wang, Yayu; Brar, Victor W.; Crommie, Michael F.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. [Bartlett, Bart M.; Long, Jeffrey R.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. RP Wegner, D (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. EM wegner@berkeley.edu; crommie@berkeley.edu RI Wegner, Daniel/G-3545-2011; Bartlett, Bart/F-1233-2013; Wegner, Daniel/F-9700-2015 OI Bartlett, Bart/0000-0001-8298-5963; NR 29 TC 66 Z9 66 U1 1 U2 35 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1530-6984 J9 NANO LETT JI Nano Lett. PD JAN PY 2008 VL 8 IS 1 BP 131 EP 135 DI 10.1021/nl072217y PG 5 WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA 249VI UT WOS:000252257700023 PM 18069869 ER PT J AU Zhao, YF Lusk, MT Dillon, AC Heben, MJ Zhang, SB AF Zhao, Yufeng Lusk, Mark T. Dillon, Anne C. Heben, Michael J. Zhang, Shengbai B. TI Boron-based organometallic nanostructures: Hydrogen storage properties and structure stability SO NANO LETTERS LA English DT Article ID TI; REACTIVITY; ADSORPTION; NANOTUBES; SURFACE; ENERGY; OXIDES AB Transition-metal (TM) boride and carboride nanostructures are studied as model organometallic materials for hydrogen storage. The dispersed TM atoms function as H-2 sorption centers on the surface of the boron or carbon-boron substrate. The flexibility offered in the variety of possible structures permits the study of the effect of the TM-TM distance on the storage capacity. When the TMs are too close to one another, TM-TM bonding reduces the capacity. Even when separated by distances larger than the normal TM-TM bond length, delocalization of TM valence electrons can still lower the hydrogen capacity. An optimal TM-TM distance for the structural motifs studied here is similar to 6 angstrom. Our study also permitted the evaluation of new TM boride nanostructures. We predict a low-energy single-walled scandium triboride (ScB3) nanotube that can bind similar to 6.1 wt % hydrogen with a binding energy of 22 similar to 26 kJ/mol. C1 [Zhao, Yufeng; Dillon, Anne C.; Heben, Michael J.; Zhang, Shengbai B.] Natl Renewable Energy Lab, Golden, CO 80401 USA. [Lusk, Mark T.] Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA. RP Zhao, YF (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. EM yufeng_zhao@nrel.gov RI Krausnick, Jennifer/D-6291-2013; Zhang, Shengbai/D-4885-2013 OI Zhang, Shengbai/0000-0003-0833-5860 NR 31 TC 68 Z9 68 U1 1 U2 13 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1530-6984 EI 1530-6992 J9 NANO LETT JI Nano Lett. PD JAN PY 2008 VL 8 IS 1 BP 157 EP 161 DI 10.1021/nl072321f PG 5 WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA 249VI UT WOS:000252257700028 PM 18069871 ER PT J AU Nikitin, A Li, XL Zhang, ZY Ogasawara, H Dai, HJ Nilsson, A AF Nikitin, Anton Li, Xiaolin Zhang, Zhiyong Ogasawara, Hirohito Dai, Hongjie Nilsson, Anders TI Hydrogen storage in carbon nanotubes through the formation of stable C-H bonds SO NANO LETTERS LA English DT Article ID ATOMIC-HYDROGEN; SOLIDS; RANGE; GAS AB To determine if carbon-based materials can be used for hydrogen storage, we have studied hydrogen chemisorption in single-walled carbon nanotubes. Using atomic hydrogen as the hydrogenation agent, we demonstrated that maximal degree of nanotube hydrogenation depends on the nanotube diameter, and for the diameter values around 2.0 nm nanotube-hydrogen complexes with close to 100% hydrogenation exist and are stable at room temperature. This means that specific carbon nanotubes can have a hydrogen storage capacity of more than 7 wt % through the formation of reversible C-H bonds. C1 [Nikitin, Anton; Ogasawara, Hirohito; Nilsson, Anders] Stanford Synchrotron Radiat Lab, Menlo Pk, CA 94025 USA. [Li, Xiaolin; Zhang, Zhiyong; Dai, Hongjie] Stanford Univ, Dept Chem, Stanford, CA 94305 USA. [Nilsson, Anders] Stockholm Univ, Albanova Univ Ctr, FYSIKUM, S-10691 Stockholm, Sweden. RP Nilsson, A (reprint author), Stanford Synchrotron Radiat Lab, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA. EM nilsson@slac.stanford.edu RI Nilsson, Anders/E-1943-2011; Ogasawara, Hirohito/D-2105-2009 OI Nilsson, Anders/0000-0003-1968-8696; Ogasawara, Hirohito/0000-0001-5338-1079 NR 30 TC 121 Z9 123 U1 1 U2 35 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1530-6984 J9 NANO LETT JI Nano Lett. PD JAN PY 2008 VL 8 IS 1 BP 162 EP 167 DI 10.1021/nl072325k 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 249VI UT WOS:000252257700029 PM 18088150 ER PT J AU Bogan, MJ Benner, WH Boutet, S Rohner, U Frank, M Barty, A Seibert, MM Maia, F Marchesini, S Bajt, S Woods, B Riot, V Hau-Riege, SP Svenda, M Marklund, E Spiller, E Hajdu, J Chapman, HN AF Bogan, Michael J. Benner, W. Henry Boutet, Sebastien Rohner, Urs Frank, Matthias Barty, Anton Seibert, M. Marvin Maia, Filipe Marchesini, Stefano Bajt, Sasa Woods, Bruce Riot, Vincent Hau-Riege, Stefan P. Svenda, Martin Marklund, Erik Spiller, Eberhard Hajdu, Janos Chapman, Henry N. TI Single particle X-ray diffractive imaging SO NANO LETTERS LA English DT Article ID FREE-ELECTRON LASER; AEROSOL MASS-SPECTROMETRY; CONTROLLED DIMENSIONS; AERODYNAMIC LENSES; NOZZLE EXPANSIONS; IONIZATION; NANOPARTICLES; VIRUS; BEAMS; SIZE AB In nanotechnology, strategies for the creation and manipulation of nanoparticles in the gas phase are critically important for surface modification and substrate-free characterization. Recent coherent diffractive imaging with intense femtosecond X-ray pulses has verified the capability of single-shot imaging of nanoscale objects at suboptical resolutions beyond the radiation-induced damage threshold. By intercepting electrospray-generated particles with a single 15 femtosecond soft-X-ray pulse, we demonstrate diffractive imaging of a nanoscale specimen in free flight for the first time, an important step toward imaging uncrystallized biomolecules. C1 [Bogan, Michael J.; Benner, W. Henry; Boutet, Sebastien; Rohner, Urs; Frank, Matthias; Barty, Anton; Marchesini, Stefano; Bajt, Sasa; Woods, Bruce; Riot, Vincent; Hau-Riege, Stefan P.; Chapman, Henry N.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Boutet, Sebastien] Stanford Linear Accelerator Ctr, Stanford Synchrotron Radiat Lab, Stanford, CA 94305 USA. [Boutet, Sebastien; Seibert, M. Marvin; Maia, Filipe; Marklund, Erik; Hajdu, Janos] Uppsala Univ, Inst Cell & Mol Biol, Mol Biophys Lab, S-75124 Uppsala, Sweden. [Spiller, Eberhard] Spiller Xray Opt, Livermore, CA 94550 USA. [Chapman, Henry N.] Univ Hamburg, Ctr Free Elect Laser Sci, D-22607 Hamburg, Germany. RP Bogan, MJ (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave, Livermore, CA 94550 USA. EM bogan2@llnl.gov RI Marchesini, Stefano/A-6795-2009; Chapman, Henry/G-2153-2010; Bajt, Sasa/G-2228-2010; Marklund, Erik/G-7480-2012; Bogan, Mike/I-6962-2012; Rocha Neves Couto Maia, Filipe/C-3146-2014; Barty, Anton/K-5137-2014; Frank, Matthias/O-9055-2014; OI Chapman, Henry/0000-0002-4655-1743; Marklund, Erik/0000-0002-9804-5009; Bogan, Mike/0000-0001-9318-3333; Rocha Neves Couto Maia, Filipe/0000-0002-2141-438X; Barty, Anton/0000-0003-4751-2727; Seibert, Mark Marvin/0000-0003-0251-0744 NR 38 TC 144 Z9 145 U1 0 U2 40 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1530-6984 J9 NANO LETT JI Nano Lett. PD JAN PY 2008 VL 8 IS 1 BP 310 EP 316 DI 10.1021/nl072728k PG 7 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 249VI UT WOS:000252257700055 PM 18095739 ER PT S AU Lu, M Ocola, LE Divan, R Mancini, DC AF Lu, Ming Ocola, Leonidas E. Divan, Ralu Mancini, Derrick C. BE Dobisz, EA Eldada, LA TI Fabrication of High-aspect-ratio Hard X-ray Zone Plates with HSQ Plating Molds SO NANOENGINEERING: FABRICATION, PROPERTIES, OPTICS, AND DEVICES V SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Nanoengineering - Fabrication, Properties, Optics and Devices V CY AUG 13-14, 2008 CL San Diego, CA SP SPIE DE Fresnel zone plate; high-aspect-ratio; hard x-ray; electron beam lithography; HSQ ID HYDROGEN SILSESQUIOXANE; LITHOGRAPHY; CONTRAST; RESIST; OPTIMIZATION; PERFORMANCE AB Fresnel zone plates are important x-ray diffractive optics which offer a focusing resolution approaching the theoretical limit. In hard x-ray region, the refractive indices of all the materials are close to unity, which requests thick zone plate to achieve a reasonable efficiency. It makes high-resolution zone plate extremely difficult to fabricate due to its high aspect ratio. We report a LIGA-like fabrication process employing e-beam resist HSQ as the plating mold material, which is relative simply compared with traditional processes. 1-mu m-thick gold zone plates with 80-nm-wide outermost zone have been fabricated with this process. C1 [Lu, Ming; Ocola, Leonidas E.; Divan, Ralu; Mancini, Derrick C.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. RP Lu, M (reprint author), Argonne Natl Lab, Ctr Nanoscale Mat, 9700 S Cass Ave, Argonne, IL 60439 USA. EM mlu@anl.gov OI Ocola, Leonidas/0000-0003-4990-1064 NR 25 TC 1 Z9 1 U1 0 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-7259-5 J9 PROC SPIE PY 2008 VL 7039 AR 70390V DI 10.1117/12.796839 PG 10 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Instruments & Instrumentation; Optics SC Engineering; Science & Technology - Other Topics; Instruments & Instrumentation; Optics GA BIU61 UT WOS:000262945300021 ER PT S AU Martin, LA Mancini, DC Rich, LE Divan, R AF Martin, Lane A. Mancini, Derrick C. Rich, Lauren E. Divan, Ralu BE Dobisz, EA Eldada, LA TI Synthesis and Patterning of Hydrogel-Nanoparticle Composites SO NANOENGINEERING: FABRICATION, PROPERTIES, OPTICS, AND DEVICES V SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Nanoengineering - Fabrication, Properties, Optics and Devices V CY AUG 13-14, 2008 CL San Diego, CA SP SPIE ID CROSS-LINKING; GELS AB We have developed a novel method for patterning nanoscale composite hydrogel materials on silicon through electron beam lithography. Gold particles were introduced into poly N-isopropylacrylamide (PNIPAam) patterned by e-beam lithography. By including BAC, the polymer can covalently bond to the colloidal gold nanoparticles. Such composites can be stable for long periods of time. We describe the structure, quality, and properties of the resulting patterned hydrogel-nanoparticle composite films. C1 [Martin, Lane A.; Mancini, Derrick C.; Rich, Lauren E.; Divan, Ralu] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. RP Martin, LA (reprint author), Argonne Natl Lab, Ctr Nanoscale Mat, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 10 TC 0 Z9 0 U1 0 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-7259-5 J9 P SOC PHOTO-OPT INS PY 2008 VL 7039 AR 703917 DI 10.1117/12.796803 PG 10 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Instruments & Instrumentation; Optics SC Engineering; Science & Technology - Other Topics; Instruments & Instrumentation; Optics GA BIU61 UT WOS:000262945300027 ER PT S AU Orendorff, CJ Barker, JM Rowen, AM Yelton, WG Arrington, CL Gillen, JR AF Orendorff, Chirstopher J. Barker, Joy M. Rowen, Adam M. Yelton, W. Graham Arrington, Christian L. Gillen, J. Rusty BE Dobisz, EA Eldada, LA TI A wet chemistry approach to sub-micron, removable flip chip interconnects SO NANOENGINEERING: FABRICATION, PROPERTIES, OPTICS, AND DEVICES V SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Nanoengineering - Fabrication, Properties, Optics and Devices V CY AUG 13-14, 2008 CL San Diego, CA SP SPIE DE Nanosphere lithography; flip chip; 3D stacking; bump bond; electroplating; electrodeposition ID NANOSPHERE LITHOGRAPHY; NANOPARTICLE; FABRICATION; TECHNOLOGY; THICKNESS; ARRAYS AB Higher performance is the main driver in the integrated circuit (IQ market, but along with added function comes the cost of increased input/output connections and larger die sizes. Space saving approaches aimed at solving these challenges includes two technologies; 3D stacking (3D-ICs) and flip chip assemblies. Emerging ICs require sub-micron scale interconnects which include vias for 3D-ICs and bump bonds for flip chips. Photolithographic techniques are commonly used to prepare templates followed by metal vapor deposition to create flip chip bump bonds. Both the lithography step and the metal properties required for bump bonding contribute to limiting this approach to a minimum bump size of similar to 10 pm. Here, we present a wet chemistry approach to fabricating uniform bump bonds of tunable size and height down to the nanoscale. Nanosphere lithography (NSL), a "soft" lithographic technique, is used to create a bump bond template or mask for nanoscale bumps. Electrochemical deposition is also used through photoresist templates to create uniform bump bonds across large area wafers or dies. This template approach affords bumps with tunable diameters from 100s of nanometers to microns (allowing for tunable interconnect pitch and via diameters) while the use of constant current electoplating gives uniform bump height over large areas (>1 cm(2)). C1 [Orendorff, Chirstopher J.] Sandia Natl Labs, Adv Power Sources Res & Dev Dept, Albuquerque, NM 87185 USA. RP Orendorff, CJ (reprint author), Sandia Natl Labs, Adv Power Sources Res & Dev Dept, POB 5800, Albuquerque, NM 87185 USA. NR 16 TC 0 Z9 0 U1 0 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 978-0-8194-7259-5 J9 P SOC PHOTO-OPT INS PY 2008 VL 7039 AR 70390R DI 10.1117/12.795287 PG 11 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Instruments & Instrumentation; Optics SC Engineering; Science & Technology - Other Topics; Instruments & Instrumentation; Optics GA BIU61 UT WOS:000262945300017 ER PT J AU Das, SK Choi, SUS Yu, WH Pradeep, T AF Das, Sarit K. Choi, Stephen U. S. Yu, Wenhua Pradeep, T. BA Das, SK Choi, SUS Yu, WH Pradeep, T BF Das, SK Choi, SUS Yu, WH Pradeep, T TI NANOFLUIDS Science and Technology Introduction SO NANOFLUIDS: SCIENCE AND TECHNOLOGY LA English DT Editorial Material; Book Chapter ID EFFECTIVE THERMAL-CONDUCTIVITY; BOILING HEAT-TRANSFER; CARBON NANOTUBE COMPOSITES; TRANSFER ENHANCEMENT; SPHERICAL-PARTICLES; AQUEOUS SUSPENSIONS; INTERFACIAL LAYERS; MODEL; FLUIDS; POOL C1 [Das, Sarit K.; Pradeep, T.] Indian Inst Technol, Madras 600036, Tamil Nadu, India. [Choi, Stephen U. S.] Univ Illinois, Chicago, IL USA. [Choi, Stephen U. S.] Korea Atom Energy Res Inst, Taejon, South Korea. [Yu, Wenhua] Argonne Natl Lab, Argonne, IL 60439 USA. RP Das, SK (reprint author), Indian Inst Technol, Madras 600036, Tamil Nadu, India. NR 96 TC 6 Z9 6 U1 0 U2 0 PU BLACKWELL SCIENCE PUBL PI OXFORD PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND BN 978-0-470-18069-3 PY 2008 BP 1 EP 37 PG 37 WC Nanoscience & Nanotechnology; Physics, Fluids & Plasmas SC Science & Technology - Other Topics; Physics GA BCJ55 UT WOS:000310290000002 ER PT J AU Das, SK Choi, SUS Yu, WH Pradeep, T AF Das, Sarit K. Choi, Stephen U. S. Yu, Wenhua Pradeep, T. BA Das, SK Choi, SUS Yu, WH Pradeep, T BF Das, SK Choi, SUS Yu, WH Pradeep, T TI NANOFLUIDS Science and Technology PREFACE SO NANOFLUIDS: SCIENCE AND TECHNOLOGY LA English DT Editorial Material; Book Chapter ID IN-OIL MICROEMULSIONS; SIZE-CONTROLLED SYNTHESIS; MONODISPERSE PALLADIUM NANOPARTICLES; COLLOIDAL PLATINUM NANOPARTICLES; SHAPE-CONTROLLED SYNTHESIS; TRANSITION-METAL OXIDES; GERMANIUM QUANTUM DOTS; WET CHEMICAL SYNTHESIS; AOT REVERSE MICELLES; MAGNETIC-PROPERTIES C1 [Das, Sarit K.; Pradeep, T.] Indian Inst Technol, Madras 600036, Tamil Nadu, India. [Choi, Stephen U. S.] Univ Illinois, Chicago, IL USA. [Choi, Stephen U. S.] Korea Atom Energy Res Inst, Taejon, South Korea. [Yu, Wenhua] Argonne Natl Lab, Argonne, IL 60439 USA. RP Das, SK (reprint author), Indian Inst Technol, Madras 600036, Tamil Nadu, India. NR 204 TC 0 Z9 0 U1 0 U2 0 PU BLACKWELL SCIENCE PUBL PI OXFORD PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND BN 978-0-470-18069-3 PY 2008 BP IX EP + PG 16 WC Nanoscience & Nanotechnology; Physics, Fluids & Plasmas SC Science & Technology - Other Topics; Physics GA BCJ55 UT WOS:000310290000001 ER PT J AU Das, SK Choi, SUS Yu, WH Pradeep, T AF Das, Sarit K. Choi, Stephen U. S. Yu, Wenhua Pradeep, T. BA Das, SK Choi, SUS Yu, WH Pradeep, T BF Das, SK Choi, SUS Yu, WH Pradeep, T TI Synthesis of Nanofluids SO NANOFLUIDS: SCIENCE AND TECHNOLOGY LA English DT Article; Book Chapter ID CORE-SHELL NANOPARTICLES; MICROWAVE-HYDROTHERMAL SYNTHESIS; WALLED CARBON NANOTUBES; PROTECTED CLUSTER SUPERLATTICES; SELF-ASSEMBLED MONOLAYERS; IRON-OXIDE NANOPARTICLES; GOLD NANOPARTICLES; MAGNETIC-PROPERTIES; METAL NANOPARTICLES; OPTICAL-PROPERTIES C1 [Das, Sarit K.; Pradeep, T.] Indian Inst Technol, Madras 600036, Tamil Nadu, India. [Choi, Stephen U. S.] Univ Illinois, Chicago, IL USA. [Choi, Stephen U. S.] Korea Atom Energy Res Inst, Taejon, South Korea. [Yu, Wenhua] Argonne Natl Lab, Argonne, IL 60439 USA. RP Das, SK (reprint author), Indian Inst Technol, Madras 600036, Tamil Nadu, India. NR 236 TC 0 Z9 0 U1 0 U2 0 PU BLACKWELL SCIENCE PUBL PI OXFORD PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND BN 978-0-470-18069-3 PY 2008 BP 39 EP 100 PG 62 WC Nanoscience & Nanotechnology; Physics, Fluids & Plasmas SC Science & Technology - Other Topics; Physics GA BCJ55 UT WOS:000310290000003 ER PT J AU Das, SK Choi, SUS Yu, WH Pradeep, T AF Das, Sarit K. Choi, Stephen U. S. Yu, Wenhua Pradeep, T. BA Das, SK Choi, SUS Yu, WH Pradeep, T BF Das, SK Choi, SUS Yu, WH Pradeep, T TI Conduction Heat Transfer in Nanofluids SO NANOFLUIDS: SCIENCE AND TECHNOLOGY LA English DT Article; Book Chapter ID THERMAL-CONDUCTIVITY; AQUEOUS SUSPENSIONS; CARBON NANOTUBES; ENHANCEMENT; PARTICLES; NANOPARTICLES; DISPERSIONS C1 [Das, Sarit K.; Pradeep, T.] Indian Inst Technol, Madras 600036, Tamil Nadu, India. [Choi, Stephen U. S.] Univ Illinois, Chicago, IL USA. [Choi, Stephen U. S.] Korea Atom Energy Res Inst, Taejon, South Korea. [Yu, Wenhua] Argonne Natl Lab, Argonne, IL 60439 USA. RP Das, SK (reprint author), Indian Inst Technol, Madras 600036, Tamil Nadu, India. NR 36 TC 1 Z9 1 U1 0 U2 0 PU BLACKWELL SCIENCE PUBL PI OXFORD PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND BN 978-0-470-18069-3 PY 2008 BP 101 EP 165 PG 65 WC Nanoscience & Nanotechnology; Physics, Fluids & Plasmas SC Science & Technology - Other Topics; Physics GA BCJ55 UT WOS:000310290000004 ER PT J AU Das, SK Choi, SUS Yu, WH Pradeep, T AF Das, Sarit K. Choi, Stephen U. S. Yu, Wenhua Pradeep, T. BA Das, SK Choi, SUS Yu, WH Pradeep, T BF Das, SK Choi, SUS Yu, WH Pradeep, T TI Theoretical Modeling of Thermal Conductivity in Nanofluids SO NANOFLUIDS: SCIENCE AND TECHNOLOGY LA English DT Article; Book Chapter ID CARBON NANOTUBE COMPOSITES; NANOPARTICLE-FLUID MIXTURE; DC ELECTRICAL-CONDUCTIVITY; DIELECTRIC-CONSTANT; HEAT-TRANSFER; POROUS-MEDIA; INHOMOGENEOUS MATERIALS; HETEROGENEOUS MIXTURES; SPHERICAL INCLUSIONS; TRANSPORT-PROPERTIES C1 [Das, Sarit K.; Pradeep, T.] Indian Inst Technol, Madras 600036, Tamil Nadu, India. [Choi, Stephen U. S.] Univ Illinois, Chicago, IL USA. [Choi, Stephen U. S.] Korea Atom Energy Res Inst, Taejon, South Korea. [Yu, Wenhua] Argonne Natl Lab, Argonne, IL 60439 USA. RP Das, SK (reprint author), Indian Inst Technol, Madras 600036, Tamil Nadu, India. NR 117 TC 1 Z9 1 U1 0 U2 0 PU BLACKWELL SCIENCE PUBL PI OXFORD PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND BN 978-0-470-18069-3 PY 2008 BP 167 EP 208 PG 42 WC Nanoscience & Nanotechnology; Physics, Fluids & Plasmas SC Science & Technology - Other Topics; Physics GA BCJ55 UT WOS:000310290000005 ER PT J AU Das, SK Choi, SUS Yu, WH Pradeep, T AF Das, Sarit K. Choi, Stephen U. S. Yu, Wenhua Pradeep, T. BA Das, SK Choi, SUS Yu, WH Pradeep, T BF Das, SK Choi, SUS Yu, WH Pradeep, T TI Convection in Nanofluids SO NANOFLUIDS: SCIENCE AND TECHNOLOGY LA English DT Article; Book Chapter ID HEAT-TRANSFER ENHANCEMENT; FORCED-CONVECTION; THERMAL-CONDUCTIVITY; LAMINAR-FLOW; SPHERICAL-PARTICLES; NATURAL-CONVECTION; AXIAL-DISPERSION; CHANNEL FLOW; NANO-FLUIDS; TUBE C1 [Das, Sarit K.; Pradeep, T.] Indian Inst Technol, Madras 600036, Tamil Nadu, India. [Choi, Stephen U. S.] Univ Illinois, Chicago, IL USA. [Choi, Stephen U. S.] Korea Atom Energy Res Inst, Taejon, South Korea. [Yu, Wenhua] Argonne Natl Lab, Argonne, IL 60439 USA. RP Das, SK (reprint author), Indian Inst Technol, Madras 600036, Tamil Nadu, India. NR 63 TC 0 Z9 0 U1 0 U2 0 PU BLACKWELL SCIENCE PUBL PI OXFORD PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND BN 978-0-470-18069-3 PY 2008 BP 209 EP 296 PG 88 WC Nanoscience & Nanotechnology; Physics, Fluids & Plasmas SC Science & Technology - Other Topics; Physics GA BCJ55 UT WOS:000310290000006 ER PT J AU Das, SK Choi, SUS Yu, WH Pradeep, T AF Das, Sarit K. Choi, Stephen U. S. Yu, Wenhua Pradeep, T. BA Das, SK Choi, SUS Yu, WH Pradeep, T BF Das, SK Choi, SUS Yu, WH Pradeep, T TI Boiling of Nanofluids SO NANOFLUIDS: SCIENCE AND TECHNOLOGY LA English DT Article; Book Chapter ID HEAT-TRANSFER; NANO-FLUIDS; POOL; SURFACE; WATER; LIQUIDS; TUBES; FLUX C1 [Das, Sarit K.; Pradeep, T.] Indian Inst Technol, Madras 600036, Tamil Nadu, India. [Choi, Stephen U. S.] Univ Illinois, Chicago, IL USA. [Choi, Stephen U. S.] Korea Atom Energy Res Inst, Taejon, South Korea. [Yu, Wenhua] Argonne Natl Lab, Argonne, IL 60439 USA. RP Das, SK (reprint author), Indian Inst Technol, Madras 600036, Tamil Nadu, India. NR 31 TC 0 Z9 0 U1 0 U2 1 PU BLACKWELL SCIENCE PUBL PI OXFORD PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND BN 978-0-470-18069-3 PY 2008 BP 297 EP 335 PG 39 WC Nanoscience & Nanotechnology; Physics, Fluids & Plasmas SC Science & Technology - Other Topics; Physics GA BCJ55 UT WOS:000310290000007 ER PT J AU Das, SK Choi, SUS Yu, WH Pradeep, T AF Das, Sarit K. Choi, Stephen U. S. Yu, Wenhua Pradeep, T. BA Das, SK Choi, SUS Yu, WH Pradeep, T BF Das, SK Choi, SUS Yu, WH Pradeep, T TI Applications and Future Directions SO NANOFLUIDS: SCIENCE AND TECHNOLOGY LA English DT Article; Book Chapter ID HEAT-TRANSFER ENHANCEMENT; THERMAL-CONDUCTIVITY ENHANCEMENT; SINK PERFORMANCE; NANO-FLUIDS; NANOFLUIDS; NANOPARTICLES; FLOW; WATER; PIPE; SUSPENSIONS C1 [Das, Sarit K.; Pradeep, T.] Indian Inst Technol, Madras 600036, Tamil Nadu, India. [Choi, Stephen U. S.] Univ Illinois, Chicago, IL USA. [Choi, Stephen U. S.] Korea Atom Energy Res Inst, Taejon, South Korea. [Yu, Wenhua] Argonne Natl Lab, Argonne, IL 60439 USA. RP Das, SK (reprint author), Indian Inst Technol, Madras 600036, Tamil Nadu, India. NR 41 TC 1 Z9 1 U1 0 U2 1 PU BLACKWELL SCIENCE PUBL PI OXFORD PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND BN 978-0-470-18069-3 PY 2008 BP 337 EP 352 PG 16 WC Nanoscience & Nanotechnology; Physics, Fluids & Plasmas SC Science & Technology - Other Topics; Physics GA BCJ55 UT WOS:000310290000008 ER PT S AU Valiev, RZ Semenova, IP Jakushina, E Latysh, VV Rack, H Lowe, TC Petruzelka, J Dulhos, L Hrusak, D Sochova, J AF Valiev, R. Z. Semenova, I. P. Jakushina, E. Latysh, V. V. Rack, H. Lowe, T. C. Petruzelka, J. Dulhos, L. Hrusak, D. Sochova, J. BE Estrin, Y Maier, HJ TI Nanostructured SPD processed titanium for medical implants SO NANOMATERIALS BY SEVERE PLASTIC DEFORMATION IV, PTS 1 AND 2 SE Materials Science Forum LA English DT Proceedings Paper CT 4th International Conference on Nanomaterials by Severe Plastic Deformation CY AUG 18-22, 2008 CL Goslar, GERMANY DE nanotitanium; fatigue properties; severe plastic deformation; biological tests; implants ID SEVERE PLASTIC-DEFORMATION; HIGH-PRESSURE TORSION AB Nanostructured titanium (nTi) with essential enhanced strength and fatigue characteristics is an advanced material for dental implant applications. Nano Ti is commercially pure titanium, that was nanostructured by a special technique of severe plastic deformation. It is bio inert, does not contain even potentially toxic or allergenetic additives and has significantly higher specific strength properties than any other titanium applied in dental implants. Cylindrical threaded screw implants Nanoimplant (R) sized 2.4 mm in diameter and 12 mm in length were made from nTi. It is the first application of nTi dental implant in the world reported. Recently more than 250 successful clinical applications dealing with surgery on the font teeth were carried out. No complications were noticed during the early postoperative period and early loading. Laboratory cytocompatibility tests undertaken so far on mice fibroblast cells have indicated that nanocrystalline Ti surface has a significantly better property for cell colonisation and healing of tissue consequently. C1 [Valiev, R. Z.; Semenova, I. P.; Jakushina, E.] Ufa State Aviat Tech Univ, Inst Phys Adv Mat, 12 K Marx Str, Ufa 450000, Russia. [Latysh, V. V.] Innovat Sci & Tech Ctr Iskra, Ufa 450077, Russia. [Rack, H.] Clemson Univ, Sch Mat Sci & Engn, Clemson, SC 29634 USA. [Lowe, T. C.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Petruzelka, J.] Tech Univ Ostrava, VSB, FS, CZ-70833 Ostrava, Czech Republic. RP Valiev, RZ (reprint author), Ufa State Aviat Tech Univ, Inst Phys Adv Mat, 12 K Marx Str, Ufa 450000, Russia. EM RZValiev@mail.rb.ru; Semenova-ip@mail.ru; enja2@yandex.ru; Latysh-vv@mail.ru; RACKH@exchange.clemson.edu; tlowe@lanl.gov; jiri.petruzelka@vsb.cz; timplant@timplant.cz; HRUSAK@fnplzen.cz; sochova@timplant.cz NR 12 TC 35 Z9 36 U1 8 U2 14 PU TRANS TECH PUBLICATIONS LTD PI DURNTEN-ZURICH PA KREUZSTRASSE 10, 8635 DURNTEN-ZURICH, SWITZERLAND SN 0255-5476 J9 MATER SCI FORUM PY 2008 VL 584-586 BP 49 EP 54 PN 1-2 PG 6 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Materials Science, Characterization & Testing SC Science & Technology - Other Topics; Materials Science GA BIH03 UT WOS:000259440800008 ER PT S AU Raaba, GI Valiev, RZ Gunderov, DV Lowe, TC Misra, A Zhu, YT AF Raaba, G. I. Valiev, R. Z. Gunderov, D. V. Lowe, T. C. Misra, A. Zhu, Y. T. BE Estrin, Y Maier, HJ TI Long-length ultrafine-grained titanium rods produced by ECAP-Conform SO NANOMATERIALS BY SEVERE PLASTIC DEFORMATION IV, PTS 1 AND 2 SE Materials Science Forum LA English DT Proceedings Paper CT 4th International Conference on Nanomaterials by Severe Plastic Deformation CY AUG 18-22, 2008 CL Goslar, GERMANY DE severe plastic deformation; ECAP-Conform; grain refinement; titanium ID PURE TI; MICROSTRUCTURE; EXTRUSION AB A new technique of continuous severe plastic deformation (SPD)-processing, i.e. ECAP (equal channel angular pressing)-Conform is applied for the first time to produce long-length rods of commercial purity Ti with ultrafine-grained structure. The paper reports on the results of investigation of the microstructure and mechanical properties of Ti rods processed by ECAP-Conform and the following wire drawing. C1 [Raaba, G. I.; Valiev, R. Z.; Gunderov, D. V.] Ufa State Aviat Tech Univ, Inst Phys Adv Mat, 12 K Marx St, Ufa 450000, Russia. [Lowe, T. C.; Misra, A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Zhu, Y. T.] North Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA. RP Raaba, GI (reprint author), Ufa State Aviat Tech Univ, Inst Phys Adv Mat, 12 K Marx St, Ufa 450000, Russia. EM giraab@mail.ru; rzvaliev@mail.rb.ru; dimagun@mail.ru; tlowe@lanl.gov; amisra@lanl.gov; ytzhu@ncsu.edu RI Zhu, Yuntian/B-3021-2008 OI Zhu, Yuntian/0000-0002-5961-7422 FU Federal Target Program of Russian Federation Government [3208] FX The present work was partly supported by the Federal Target Program of Russian Federation Government and the ISTC project No.3208, through DOE-GIPP program. Acknowledgements are made to A.V. Polyakov and E.P. Soshnikova for help provided during studies. NR 12 TC 22 Z9 22 U1 0 U2 7 PU TRANS TECH PUBLICATIONS LTD PI DURNTEN-ZURICH PA KREUZSTRASSE 10, 8635 DURNTEN-ZURICH, SWITZERLAND SN 0255-5476 J9 MATER SCI FORUM PY 2008 VL 584-586 BP 80 EP 85 PN 1-2 PG 6 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Materials Science, Characterization & Testing SC Science & Technology - Other Topics; Materials Science GA BIH03 UT WOS:000259440800013 ER PT S AU Habas, SE Mokari, T AF Habas, Susan E. Mokari, Taleb BE Gaburro, Z Cabrini, S Talapin, D TI Novel Hybrid Nanostructures for Photonic and Energy Applications - art. no. 703002 SO NANOPHOTONIC MATERIALS V SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Nanophotonic Materials V CY AUG 10-12, 2008 CL San Diego, CA SP SPIE ID COLLOIDAL SYNTHESIS; METAL; NANOPARTICLES; NANOCRYSTALS; NANORODS; GROWTH; RODS AB There has been significant interest in the development of multicomponent nanocrystals formed by the assembly of two or more different materials with control over size, shape, composition, and spatial orientation. In particular, the selective growth of metals on the tips of semiconductor nanorods and wires can act to couple the electrical and optical properties of semiconductors with the unique properties of various metals. Here, we outline our progress on the solution-phase synthesis of metal-semiconductor heterojunctions formed by the growth of Au, Pt, or other binary catalytic metal systems on Cd- and Pb-calcogenide nanocrystals. C1 [Habas, Susan E.; Mokari, Taleb] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Habas, SE (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA. RI MOKARI, TALEB/F-1685-2012 NR 15 TC 0 Z9 0 U1 0 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-7250-2 J9 P SOC PHOTO-OPT INS PY 2008 VL 7030 BP 3002 EP 3002 DI 10.1117/12.801201 PG 9 WC Nanoscience & Nanotechnology; Materials Science, Characterization & Testing; Optics SC Science & Technology - Other Topics; Materials Science; Optics GA BIL90 UT WOS:000260634300002 ER PT J AU Carey, VP Chen, G Grigoropoulos, C Kaviany, M Majumdar, A AF Carey, V. P. Chen, G. Grigoropoulos, C. Kaviany, M. Majumdar, A. TI A review of heat transfer physics SO NANOSCALE AND MICROSCALE THERMOPHYSICAL ENGINEERING LA English DT Review DE phonon; electron; fluid particle; photon; heat transfer physics; nano-and micro heat transfer; laser-base nano-processing; laser cooling of solids; nanoscale thermal radiation; molecular dynamics; thermophysical engineering; thermal transport ID LIQUID-VAPOR INTERFACE; THERMAL-BOUNDARY RESISTANCE; TRANSIENT THERMOREFLECTANCE TECHNIQUE; MOLECULAR-DYNAMICS EXPLORATION; SUPERSATURATED GAS-MIXTURES; BOSE-EINSTEIN CONDENSATION; POST-NUCLEATION GROWTH; WALL CARBON NANOTUBE; LENNARD-JONES FLUID; ROOM-TEMPERATURE AB With rising science contents of the engineering research and education, we give examples of the quest for fundamental understanding of heat transfer at the atomic level. These include transport as well as interactions (energy conversion) involving phonon, electron, fluid particle, and photon (or electromagnetic wave). Examples are 1. development of MD and DSMC fluid simulations as tools in nanoscale and microscale thermophysical engineering. 2. nanoscale thermal radiation, where the characteristic structural size becomes comparable to or smaller than the radiation (electromagnetic) wavelength. 3. laser-based nanoprocessing, where the surface topography, texture, etc., are modified with nanometer lateral feature definition using pulsed laser beams and confining optical energy by coupling to near-field scanning optical microscopes. 4. photon-electron-phonon couplings in laser cooling of solids, where the thermal vibrational energy (phonon) is removed by the anti-Stokes fluorescence; i.e., the photons emitted by an optical material have a mean energy higher than that of the absorbed photons. 5. exploring the limits of thermal transport in nanostructured materials using spectrally dependent phonon scattering and vibrational spectra mismatching, to impede a particular phonon bands. These examples suggest that the atomic-level heat transfer builds on and expands electromagnetism (EM), atomic-molecular-optical physics, and condensed-matter physics. The theoretical treatments include ab initio calculations, molecular dynamics simulations, Boltzmann transport theory, and near-field EM thermal emission prediction. Experimental methods include near-field microscopy. Heat transfer physics describes the kinetics of storage, transport, and transformation of microscale energy carriers (phonon, electron,fluid particle, and photon). Sensible heat is stored in the thermal motion of atoms in various phases of matter. The atomic energy states and their populations are described by the classical and the quantum statistical mechanics (partition function and combinatoric energy distribution probabilities). Transport of thermal energy by the microscale carriers is based on their particle, quasi-particle, and wave descriptions; their diffusion, flow, and propagation, and their scattering and transformation encountered as they travel. The mechanisms of energy transitions among these energy carriers, and their rates (kinetics), are governed by the match of their energies, their interaction probabilities, and the various hindering-mechanism rate (kinetics) limits. Conservation of energy describes the interplay among energy storage, transport, and conversion,from the atomic to the continuum scales. With advances in micro- and nanotechnology, heat transfer engineering of micro- and nanostructured systems has offered new opportunities for research and education. New journals, including Nanoscale and Microscale Thermophysical Engineering, have allowed communication of new specific/general as well directly useful/educational ideas on heat transfer physics. In an effort to give a more collective perspective of such contribution, here we put together a collection on small-scale heat transfer involving phonon, electron, fluid particle, and photon. These are 1. Development of MD and DSMC fluid simulations as tools in nanoscale and microscale thermophysical engineering (Carey) 2. Nanoscale thermal radiation (Chen) 3. Laser-based nanoprocessing (Grigoropoulos) 4. Photon-electron-phonon couplings in laser cooling of solids (Kaviany) 5. Exploring the limits of thermal transport in nanostructured materials (Majumdar). C1 [Kaviany, M.] Univ Michigan, Dept Mech Engn, Ann Arbor, MI 48109 USA. [Carey, V. P.; Grigoropoulos, C.; Majumdar, A.] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA. [Chen, G.] MIT, Dept Mech Engn, Cambridge, MA 02139 USA. [Grigoropoulos, C.; Majumdar, A.] Lawrence Berkeley Natl Lab, USA, Div Mat Sci, Berkeley, CA USA. RP Kaviany, M (reprint author), Univ Michigan, Dept Mech Engn, Ann Arbor, MI 48109 USA. EM kaviany@umich.edu RI Han, Kyuhee/B-6201-2009; Chen, Gang/J-1325-2014 OI Chen, Gang/0000-0002-3968-8530 NR 183 TC 53 Z9 53 U1 10 U2 163 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA SN 1556-7265 EI 1556-7273 J9 NANOSC MICROSC THERM JI Nanoscale Microscale Thermophys. Eng. PD JAN-MAR PY 2008 VL 12 IS 1 BP 1 EP 60 DI 10.1080/15567260801917520 PG 60 WC Thermodynamics; Engineering, Mechanical; Nanoscience & Nanotechnology; Materials Science, Characterization & Testing; Physics, Applied SC Thermodynamics; Engineering; Science & Technology - Other Topics; Materials Science; Physics GA 290KN UT WOS:000255121800001 ER PT J AU Hopkins, PE Duda, JC Salaway, RN Smoyer, JL Norris, PM AF Hopkins, Patrick E. Duda, John C. Salaway, Richard N. Smoyer, Justin L. Norris, Pamela M. TI Effects of Intra- and Interband Transitions on Electron-Phonon Coupling and Electron Heat Capacity After Short-Pulsed Laser Heating SO NANOSCALE AND MICROSCALE THERMOPHYSICAL ENGINEERING LA English DT Article; Proceedings Paper CT 6th Japan-United States Joint Seminar on Nanoscale Transport Phenomena Science and Engineering CY JUL 13-16, 2008 CL Boston, MA DE intraband transitions; interband transitions; electron heat capacity; electron-phonon coupling factor; Fermi smearing; two-temperature model; short pulsed laser heating ID TEMPERATURE MEASUREMENT; LATTICE; METALS; FILMS; SUPERCONDUCTORS; RELAXATION; DYNAMICS; COPPER; NICKEL; NI AB This work considers the effects of intra- and direct interband transitions on electron heat capacity and the electron-phonon coupling factor in metals. In the event of an interband transition, the population of the electron bands around the Fermi level will change, affecting the electron density of states and subsequently the thermophysical properties. In the event of photon-induced interband transitions, this repopulation can occur even at relatively low temperatures. This introduces a photon energy-dependent population term into density of states calculations when examining the effects of direct interband transitions on electron heat capacity and the electron-phonon coupling factor in temperature regimes where traditionally only intraband transitions are considered. Example calculations are shown for copper and the two-temperature model is solved using the interband-dependent values of electron heat capacity and electron-phonon coupling factor to examine the effect of these transitions on the transient electron temperature after short-pulsed laser heating. C1 [Hopkins, Patrick E.] Sandia Natl Labs, Engn Sci Ctr, Albuquerque, NM 87185 USA. [Duda, John C.; Salaway, Richard N.; Smoyer, Justin L.; Norris, Pamela M.] Univ Virginia, Dept Mech & Aerosp Engn, Charlottesville, VA USA. RP Hopkins, PE (reprint author), Sandia Natl Labs, Engn Sci Ctr, POB 5800, Albuquerque, NM 87185 USA. EM pehopki@sandia.gov RI Duda, John/A-7214-2011 NR 29 TC 12 Z9 12 U1 0 U2 8 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 1556-7265 J9 NANOSC MICROSC THERM JI Nanoscale Microscale Thermophys. Eng. PY 2008 VL 12 IS 4 BP 320 EP 333 AR PII 906656674 DI 10.1080/15567260802591985 PG 14 WC Thermodynamics; Engineering, Mechanical; Nanoscience & Nanotechnology; Materials Science, Characterization & Testing; Physics, Applied SC Thermodynamics; Engineering; Science & Technology - Other Topics; Materials Science; Physics GA 383LG UT WOS:000261674500004 ER PT S AU Nazaretski, E Pelekhov, DV Martin, I Cha, KC Akhadov, EA Hammel, PC Movshovich, R AF Nazaretski, Evgueni Pelekhov, Denis V. Martin, Ivar Cha, Kitty C. Akhadov, Elshan A. Hammel, P. Chris Movshovich, Roman BE Degertekin, L TI Localized Ferromagnetic Resonance Force Microscopy of a Continuous Permalloy-Cobalt Film SO NANOSCALE PHENOMENA IN FUNCTIONAL MATERIALS BY SCANNING PROBE MICROSCOPY SE Materials Research Society Symposium Proceedings LA English DT Proceedings Paper CT Meeting of the Materials-Research-Society / Symposium B - Nanoscale Phenomena in Functional Materials by Scanning Probe Microscopy CY NOV 26-30, 2007 CL Boston, MA SP Mat Res Soc ID NUCLEAR-MAGNETIC-RESONANCE AB We report on the Magnetic Resonance Force Microscopy (MRFM) experiments performed on a 50 nm thick permalloy and a combined 20 nm thick permalloy - cobalt film. We studied the evolution of the MRFM spectra as a function of the vertical probe-sample distance and the lateral position as probe was scanned across the permalloy/cobalt interface. Our numerical simulations of the ferromagnetic resonance (FMR) modes excited in the presence of a non-uniform tip field of the cantilever compare well with experimental findings. This work demonstrates the capability of MRFM to perform local FMR spectroscopy of different materials in continuous ferromagnetic films. C1 [Nazaretski, Evgueni; Martin, Ivar; Cha, Kitty C.; Akhadov, Elshan A.; Movshovich, Roman] Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. [Pelekhov, Denis V.; Hammel, P. Chris] Ohio State Univ, Columbus, OH 43210 USA. RP Nazaretski, E (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. RI Hammel, P Chris/O-4845-2014 OI Hammel, P Chris/0000-0002-4138-4798 FU US Department of Energy; U.S. Department of Energy [DE-AC5206NA25396]; US Department of Energy [DE-FG02-03ER46054] FX This work was supported by the US Department of Energy and was performed, in part, at the Center for Integrated Nanotechnologies, a U.S. Department of Energy, Office of Basic Energy Sciences user facility. Los Alamos National Laboratory, an affirmative action equal opportunity employer, is operated by Los Alamos National Security, LLC, for the National Nuclear Security Administration of the U.S. Department of Energy under contract DE-AC5206NA25396. Personnel at the Ohio State University was supported by the US Department of Energy through grant DE-FG02-03ER46054. NR 13 TC 0 Z9 0 U1 0 U2 1 PU MATERIALS RESEARCH SOC PI WARRENDALE PA 506 KEYSTONE DRIVE, WARRENDALE, PA 15088-7563 USA SN 0272-9172 BN 978-1-60560-814-3 J9 MATER RES SOC SYMP P PY 2008 VL 1025 DI 10.1557/PROC-1025-B11-18 PG 6 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Science & Technology - Other Topics; Materials Science GA BDJ86 UT WOS:000313567200009 ER PT S AU Yongsunthon, R Vellano, FP Lower, BH Fowler, VG Alexander, E Lower, SK AF Yongsunthon, Ruchirej Vellano, Francis Paul Lower, Brian H. Fowler, Vance G. Alexander, Emily Lower, Steven K. BE Degertekin, L TI Nanoscale Forces at the Heart of Staphylococcus Infections SO NANOSCALE PHENOMENA IN FUNCTIONAL MATERIALS BY SCANNING PROBE MICROSCOPY SE Materials Research Society Symposium Proceedings LA English DT Proceedings Paper CT Meeting of the Materials-Research-Society / Symposium B - Nanoscale Phenomena in Functional Materials by Scanning Probe Microscopy CY NOV 26-30, 2007 CL Boston, MA SP Mat Res Soc ID FIBRONECTIN-BINDING; AUREUS BACTEREMIA; IN-SITU; PROTEIN; BACTERIUM; SURFACE; SPECTROSCOPY; ENDOCARDITIS; CANTILEVERS; ADHESION AB Staphylococcus aureus is one of the most frequently isolated bacteria from infected medical implants. S. aureus has the capacity to adhere to the surface of an implant where it forms a biofilm. We used atomic force microscopy to probe binding forces between a fibronectin-coated tip and isolates of S. aureus, which were obtained from either patients with infected prostheses or healthy humans. A unique force-signature was observed for binding events between the tip and the cells. There is a strong distinction (p=0.01) in the binding force-signature observed for S. aureus isolated from the infected vs. healthy populations. This observation suggests a fundamental correlation between nanometer scale binding forces and the clinical outcome of patients with implanted medical devices. C1 [Yongsunthon, Ruchirej] Corning Inc, Corning, NY 14831 USA. [Yongsunthon, Ruchirej; Vellano, Francis Paul; Lower, Steven K.] Ohio State Univ, Columbus, OH 43210 USA. [Lower, Brian H.] Pacific NW Natl Lab, Richland, WA 99352 USA. [Fowler, Vance G.; Alexander, Emily] Duke Univ, Durham, NC 27710 USA. RP Yongsunthon, R (reprint author), Corning Inc, Corning, NY 14831 USA. RI Lower, Steven/A-2440-2008 OI Lower, Steven/0000-0001-9796-0830 FU National Science Foundation FX Pat McPhail, Mike Newell, John Tedesco, Peter Kilner, and Mike Maybrun at Veeco Metrology provided valuable technical support. This research was supported by the National Science Foundation. B.H.L. acknowledges the Department of Energy BES Program and the Environmental Molecular Sciences Laboratory at PNNL. S. K. L acknowledges the support of J. Tak.R.Y. acknowledges the support of CSY. NR 22 TC 0 Z9 0 U1 0 U2 0 PU MATERIALS RESEARCH SOC PI WARRENDALE PA 506 KEYSTONE DRIVE, WARRENDALE, PA 15088-7563 USA SN 0272-9172 BN 978-1-60560-814-3 J9 MATER RES SOC SYMP P PY 2008 VL 1025 DI 10.1557/PROC-1025-B04-10 PG 6 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Science & Technology - Other Topics; Materials Science GA BDJ86 UT WOS:000313567200002 ER PT S AU Zurbuchen, TH Patel, P Fisk, LA Zank, G Malhotra, R Funsten, HO Mewaldt, RA AF Zurbuchen, T. H. Patel, P. Fisk, L. A. Zank, G. Malhotra, R. Funsten, H. O. Mewaldt, R. A. BE Allen, MS TI Leaving the Heliosphere: A Nuclear-Powered Interstellar Probe SO NASA SPACE SCIENCE VISION MISSIONS SE Progress in Astronautics and Aeronautics LA English DT Article; Book Chapter ID WIND TERMINATION SHOCK; SOLAR-WIND; COSMIC-RAYS; OUTER HELIOSPHERE; HYDROGEN-ATOMS; RADIO-EMISSION; KUIPER-BELT; SYSTEM; CLOUD; DUST C1 [Zurbuchen, T. H.; Patel, P.; Fisk, L. A.] Univ Michigan, Ann Arbor, MI 48109 USA. [Zank, G.] Univ Calif Riverside, Riverside, CA 92521 USA. [Malhotra, R.] Univ Arizona, Tucson, AZ USA. [Funsten, H. O.] Los Alamos Natl Lab, Los Alamos, NM USA. [Mewaldt, R. A.] CALTECH, Pasadena, CA 91125 USA. RP Zurbuchen, TH (reprint author), Univ Michigan, Ann Arbor, MI 48109 USA. NR 69 TC 1 Z9 1 U1 0 U2 0 PU AMER INST AERONAUTICS & ASTRONAUTICS PI RESTON PA 1801 ALEXANDER BELL DR, STE 500, RESTON, VA 20191-4344 USA SN 0079-6050 BN 978-1-56347-934-2 J9 PROG ASTRONAUT AERON PY 2008 VL 224 BP 155 EP 189 PG 35 WC Engineering, Aerospace; Astronomy & Astrophysics SC Engineering; Astronomy & Astrophysics GA BJU77 UT WOS:000267213900006 ER PT S AU Boggs, S Wunderer, C Zoglauer, A Dermer, C Kurfess, J Novikova, EI Phlips, B Wulf, E Bloser, P McConnell, M Ryan, J Aprile, E Gehrels, N Sturner, S Hoover, A Kippen, M Klimenk, A Tournear, D Hartmann, D Leising, M Baring, M Kocevski, D Oberlack, U Polsen, M Zych, A Harris, M Weidenspointner, G Milne, P Beacom, J Bildsten, L Hernanz, M Smith, D Starrfield, S AF Boggs, Steven Wunderer, Cornelia Zoglauer, Andreas Dermer, Charles Kurfess, James Novikova, Elena I. Phlips, Bernard Wulf, Eric Bloser, Peter McConnell, Mark Ryan, James Aprile, Elena Gehrels, Neil Sturner, Steven Hoover, Andrew Kippen, Marc Klimenk, Alexei Tournear, Derek Hartmann, Dieter Leising, Mark Baring, Matthew Kocevski, Dan Oberlack, Uwe Polsen, Mark Zych, Allen Harris, Michael Weidenspointner, Georg Milne, Peter Beacom, John Bildsten, Lars Hernanz, Margarita Smith, David Starrfield, Sumner CA ACT Consortium BE Allen, MS TI The Advanced Compton Telescope Mission SO NASA SPACE SCIENCE VISION MISSIONS SE Progress in Astronautics and Aeronautics LA English DT Article; Book Chapter ID MICRO-WELL DETECTORS; GAMMA-RAY TELESCOPE; X-RAY; SPECTROSCOPY; ASTROPHYSICS; PERFORMANCE; LXEGRIT; ABOARD C1 [Boggs, Steven; Wunderer, Cornelia; Zoglauer, Andreas] Univ Calif Berkeley, Berkeley, CA 94720 USA. [Dermer, Charles; Kurfess, James; Novikova, Elena I.; Phlips, Bernard; Wulf, Eric] USN, Res Lab, Washington, DC 20375 USA. [Bloser, Peter; McConnell, Mark; Ryan, James] Univ New Hampshire, Durham, NH 03824 USA. [Aprile, Elena] Columbia Univ, New York, NY USA. [Gehrels, Neil; Sturner, Steven] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. [Hoover, Andrew; Kippen, Marc; Klimenk, Alexei; Tournear, Derek] Los Alamos Natl Lab, Los Alamos, CA USA. [Hartmann, Dieter; Leising, Mark] Clemson Univ, Clemson, SC USA. [Baring, Matthew; Kocevski, Dan; Oberlack, Uwe] Rice Univ, Houston, TX USA. [Polsen, Mark; Zych, Allen] Univ Calif Riverside, Riverside, CA 92521 USA. [Harris, Michael; Weidenspointner, Georg] Ctr Etud Spatiale Rayonnements, Toulouse, France. [Milne, Peter] Arizona State Univ, Tempe, AZ USA. [Beacom, John] Ohio State Univ, Columbus, OH 43210 USA. [Bildsten, Lars] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA. [Hernanz, Margarita] IEEC CSIC, Bellaterra, Spain. [Smith, David] Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA. [Starrfield, Sumner] Univ Arizona, Tucson, AZ USA. RP Boggs, S (reprint author), Univ Calif Berkeley, Berkeley, CA 94720 USA. RI Wulf, Eric/B-1240-2012; Boggs, Steven/E-4170-2015 OI Boggs, Steven/0000-0001-9567-4224 NR 30 TC 1 Z9 1 U1 0 U2 0 PU AMER INST AERONAUTICS & ASTRONAUTICS PI RESTON PA 1801 ALEXANDER BELL DR, STE 500, RESTON, VA 20191-4344 USA SN 0079-6050 BN 978-1-56347-934-2 J9 PROG ASTRONAUT AERON PY 2008 VL 224 BP 369 EP 404 PG 36 WC Engineering, Aerospace; Astronomy & Astrophysics SC Engineering; Astronomy & Astrophysics GA BJU77 UT WOS:000267213900012 ER PT S AU Charles, JS Potok, TE Patton, R Cui, XH AF Charles, Jesse St. Potok, Thomas E. Patton, Robert Cui, Xiaohui BE Krasnogor, N Nicosia, G Pavone, M Pelta, D TI Flocking-based Document Clustering on the Graphics Processing Unit SO NATURE INSPIRED COOPERATIVE STRATEGIES FOR OPTIMIZATION (NICSO 2007) SE Studies in Computational Intelligence LA English DT Proceedings Paper CT International Workshop on Nature Inspired Cooperative Strategies for Optimization CY NOV 08-10, 2007 CL Acireale, ITALY SP Univ Catania, Fac Sci & Dept Math & Comp Sci, Consorzio Catania Ricerche AB Analyzing and grouping documents by content is a complex problem. One explored method of solving this problem borrows from nature, imitating the flocking behavior of birds. Each bird represents a single document and flies toward other documents that are similar to it. One limitation of this method of document clustering is its complexity O(n(2)). As the number of documents grows, it becomes increasingly difficult to receive results in a reasonable amount of time. However, flocking behavior, along with many naturally inspired algorithms such as ant colony optimization and particle swarm optimization, are highly parallel and have found increased performance on expensive cluster computers. In the last flew years, the graphics processing unit (GPU) has received attention for its ability to solve highly-parallel and semi-parallel problems much faster than the traditional sequential processor. Some applications see a huge increase in performance on this new platform. The cost of these high-performance devices is also marginal when compared with the price of cluster machines. In this paper, we have conducted research to exploit this architecture and apply its strengths to the document flocking problem. Our results highlight the potential benefit the GPU brings to many naturally inspired algorithms. Using the CUDA platform from NIVIDA (R), we developed a document flocking implementation to be run on the NIVIDA (R) GEFORCE 8800. Additionally, we developed a similar but sequential implementation of the same algorithm to be run on a desktop CPU. We tested the performance of each on groups of news articles ranging in size from 200 to 3000 documents. The results of these tests were very significant. Performance gains ranged from three to nearly five times improvement of the GPU over the CPU implementation. Our results also confirm that each implementation is of similar complexity, confirming that gains are from the hardware and not from algorithmic benefits. This improvement in runtime makes the GPU a potentially powerful new platform for document analysis. C1 [Charles, Jesse St.] Univ Tennessee, Chattanooga, TN 37403 USA. [Potok, Thomas E.; Patton, Robert; Cui, Xiaohui] Oak Ridge Natl Lab, Oak Ridge, TN USA. RP Charles, JS (reprint author), Univ Tennessee, Chattanooga, TN 37403 USA. EM jesse-stcharles@utc.edu; potokte@ornl.gov; pattonrm@ornl.gov; cuix@ornl.gov OI Patton, Robert/0000-0002-8101-0571; Potok, Thomas/0000-0001-6687-3435 NR 15 TC 1 Z9 1 U1 0 U2 3 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES SN 1860-949X BN 978-3-540-78986-4 J9 STUD COMPUT INTELL PY 2008 VL 129 BP 27 EP + PG 4 WC Computer Science, Artificial Intelligence; Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA BIQ45 UT WOS:000262048100003 ER PT S AU Cui, XH Patton, RM Treadwell, J Potok, TE AF Cui, Xiaohui Patton, Robert M. Treadwell, Jim Potok, Thomas E. BE Krasnogor, N Nicosia, G Pavone, M Pelta, D TI Particle Swarm Based Collective Searching Model for Adaptive Environment SO NATURE INSPIRED COOPERATIVE STRATEGIES FOR OPTIMIZATION (NICSO 2007) SE Studies in Computational Intelligence LA English DT Proceedings Paper CT International Workshop on Nature Inspired Cooperative Strategies for Optimization CY NOV 08-10, 2007 CL Acireale, ITALY SP Univ Catania, Fac Sci & Dept Math & Comp Sci, Consorzio Catania Ricerche AB This report presents a pilot study of an integration of particle swarm algorithm, social knowledge adaptation and multi-agent approaches for modeling the collective search behavior of self-organized groups in an adaptive environment. The objective of this research is to apply the particle swarm metaphor as a model of social group adaptation for the dynamic environment and to provide insight and understanding of social group knowledge discovering and strategic searching. A new adaptive environment model, which dynamically reacts to the group collective searching behaviors, is proposed in this research. The simulations in the research indicate that effective communication between groups is not the necessary requirement for whole self-organized groups to achieve the efficient collective searching behavior in the adaptive environment. One possible application of this research is building scientific understanding of the insurgency in the count-Insurgent warfare. C1 [Cui, Xiaohui; Patton, Robert M.; Treadwell, Jim; Potok, Thomas E.] Oak Ridge Natl Lab, Computat Sci & Engn Div, Oak Ridge, TN 37831 USA. RP Cui, XH (reprint author), Oak Ridge Natl Lab, Computat Sci & Engn Div, Oak Ridge, TN 37831 USA. EM cuix@ornl.gov OI Patton, Robert/0000-0002-8101-0571; Potok, Thomas/0000-0001-6687-3435 NR 16 TC 1 Z9 1 U1 0 U2 2 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES SN 1860-949X BN 978-3-540-78986-4 J9 STUD COMPUT INTELL PY 2008 VL 129 BP 211 EP 220 PG 10 WC Computer Science, Artificial Intelligence; Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA BIQ45 UT WOS:000262048100020 ER PT J AU Cox, S Singleton, J Mcdonald, RD Migliori, A Littlewood, PB AF Cox, Susan Singleton, J. Mcdonald, R. D. Migliori, A. Littlewood, P. B. TI Sliding charge-density wave in manganites SO NATURE MATERIALS LA English DT Article ID BROAD-BAND NOISE; ORDERED STRIPES; THIN-FILMS; NBSE3; LA0.5CA0.5MNO3; LA1-XCAXMNO3; STATE; TAS3; COMMENSURATE; TEMPERATURE AB Stripe and chequerboard phases appear in many metal oxide compounds, and are thought to be linked to exotic behaviour such as high-temperature superconductivity(1) and colossal magnetoresistance(2). It is therefore extremely important to understand the fundamental nature of such phases. The so-called stripe phase of the manganites has long been interpreted as the localization of charge at atomic sites(3-6). Here, we present resistance measurements on La0.50Ca0.50MnO3 that strongly suggest that this state is in fact a prototypical charge-density wave (CDW) that undergoes collective transport. Dramatic resistance hysteresis effects and broadband noise properties are observed, both of which are typical of sliding CDWsystems. Moreover, the high levels of disorder typical of manganites result in behaviour similar to that of well-known disordered CDW materials. The CDW-type behaviour of the manganite superstructure suggests that unusual transport and structural properties do not require exotic physics, but could emerge when a well-understood phase (the CDW) coexists with disorder. C1 [Cox, Susan; Singleton, J.; Mcdonald, R. D.; Migliori, A.] Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA. [Littlewood, P. B.] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England. RP Cox, S (reprint author), Los Alamos Natl Lab, Natl High Magnet Field Lab, MS-E536, Los Alamos, NM 87545 USA. EM scox@lanl.gov RI Cavendish, TCM/C-9489-2009; Littlewood, Peter/B-7746-2008; McDonald, Ross/H-3783-2013; OI McDonald, Ross/0000-0002-0188-1087; Mcdonald, Ross/0000-0002-5819-4739 NR 34 TC 89 Z9 89 U1 4 U2 37 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 1476-1122 J9 NAT MATER JI Nat. Mater. PD JAN PY 2008 VL 7 IS 1 BP 25 EP 30 DI 10.1038/nmat2071 PG 6 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Chemistry; Materials Science; Physics GA 247YE UT WOS:000252117700015 PM 18059276 ER PT J AU Wang, YY Kioupakis, E Lu, XH Wegner, D Yamachika, R Dahl, JE Carlson, RMK Louie, SG Crommie, MF AF Wang, Yayu Kioupakis, Emmanouil Lu, Xinghua Wegner, Daniel Yamachika, Ryan Dahl, Jeremy E. Carlson, Robert M. K. Louie, Steven G. Crommie, Michael F. TI Spatially resolved electronic and vibronic properties of single diamondoid molecules SO NATURE MATERIALS LA English DT Article ID VIBRATIONAL SPECTROSCOPY; CYCLOHEXAMANTANE C26H30; MICROSCOPY; NANOSCALE AB Diamondoids are a unique form of carbon nanostructure best described as hydrogen-terminated diamond molecules(1). Their diamond-cage structures and tetrahedral sp(3) hybrid bonding create new possibilities for tuning electronic bandgaps, optical properties, thermal transport and mechanical strength at the nanoscale(1,2). The recently discovered higher diamondoids(3,4) have thus generated much excitement in regards to their potential versatility as nanoscale devices(5-15). Despite this excitement, however, very little is known about the properties of isolated diamondoids on metal surfaces, a very relevant system for molecular electronics. For example, it is unclear how the microscopic characteristics of molecular orbitals and local electron-vibrational coupling affect electron conduction, emission and energy transfer in the diamondoids. Here, we report the first single-molecule study of tetramantane diamondoids on Au(111) using scanning tunnelling microscopy and spectroscopy. We find that the diamondoid electronic structure and electron-vibrational coupling exhibit unique and unexpected spatial correlations characterized by pronounced nodal structure across the molecular surfaces. Ab initio pseudopotential density functional calculations reveal that much of the observed electronic and vibronic properties of diamondoids are determined by surface hydrogen terminations, a feature having important implications for designing future diamondoid-based molecular devices. C1 [Wang, Yayu] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Dahl, Jeremy E.; Carlson, Robert M. K.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Wang, YY (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. EM yywang@berkeley.edu; crommie@berkeley.edu RI Lu, Xinghua/F-2655-2010; Wegner, Daniel/G-3545-2011; Kioupakis, Emmanouil/L-4504-2013; Wegner, Daniel/F-9700-2015 NR 29 TC 62 Z9 62 U1 4 U2 44 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 1476-1122 J9 NAT MATER JI Nat. Mater. PD JAN PY 2008 VL 7 IS 1 BP 38 EP 42 DI 10.1038/nmat2066 PG 5 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Chemistry; Materials Science; Physics GA 247YE UT WOS:000252117700017 PM 18037893 ER PT J AU Ho, JC Yerushalmi, R Jacobson, ZA Fan, Z Alley, RL Javey, A AF Ho, Johnny C. Yerushalmi, Roie Jacobson, Zachery A. Fan, Zhiyong Alley, Robert L. Javey, Ali TI Controlled nanoscale doping of semiconductors via molecular monolayers SO NATURE MATERIALS LA English DT Article ID SILICON SURFACES; NANOWIRE ARRAYS; DEVICES; PHOSPHORUS; DIFFUSION; FABRICATION; VAPOR AB One of the major challenges towards scaling electronic devices to the nanometre-size regime is attaining controlled doping of semiconductor materials with atomic accuracy, as at such small scales, the various existing technologies suffer from a number of setbacks. Here, we present a novel strategy for controlled, nanoscale doping of semiconductor materials by taking advantage of the crystalline nature of silicon and its rich, self-limiting surface reaction properties. Our method relies on the formation of a highly uniform and covalently bonded monolayer of dopant-containing molecules, which enables deterministic positioning of dopant atoms on the Si surfaces. In a subsequent annealing step, the dopant atoms are diffused into the Si lattice to attain the desired doping profile. We show the versatility of our approach through controlled p- and n-doping of a wide range of semiconductor materials, including ultrathin silicon-on-insulator substrates and nanowires, which are then configured into novel transistor structures. C1 [Ho, Johnny C.; Yerushalmi, Roie; Jacobson, Zachery A.; Fan, Zhiyong; Alley, Robert L.; Javey, Ali] Univ Calif Berkeley, Dept Elect Engn & Comp Sci, Berkeley, CA 94720 USA. [Ho, Johnny C.; Yerushalmi, Roie; Jacobson, Zachery A.; Fan, Zhiyong; Javey, Ali] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Ho, JC (reprint author), Univ Calif Berkeley, Dept Elect Engn & Comp Sci, Berkeley, CA 94720 USA. EM ajavey@eecs.berkeley.edu RI Fan, Zhiyong/C-4970-2012; Ho, Johnny/K-5275-2012; Javey, Ali/B-4818-2013; OI Ho, Johnny/0000-0003-3000-8794; Fan, Zhiyong/0000-0002-5397-0129 NR 30 TC 153 Z9 153 U1 5 U2 59 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 1476-1122 J9 NAT MATER JI Nat. Mater. PD JAN PY 2008 VL 7 IS 1 BP 62 EP 67 DI 10.1038/nmat2058 PG 6 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Chemistry; Materials Science; Physics GA 247YE UT WOS:000252117700022 PM 17994026 ER PT J AU Schmidt-Rohr, K Chen, Q AF Schmidt-Rohr, Klaus Chen, Qiang TI Parallel cylindrical water nanochannels in Nafion fuel-cell membranes SO NATURE MATERIALS LA English DT Article ID PERFLUORINATED IONOMER MEMBRANES; ANGLE X-RAY; POLYMER ELECTROLYTE MEMBRANES; NEUTRON-SCATTERING DATA; ION-EXCHANGE MEMBRANES; PROTON TRANSPORT; TEMPERATURE; DIFFUSION; SAXS; CONDUCTIVITY AB The structure of the Nafion ionomer used in proton-exchange membranes of H-2/O-2 fuel cells has long been contentious. Using a recently introduced algorithm, we have quantitatively simulated previously published small-angle scattering data of hydrated Nafion. The characteristic 'ionomer peak' arises from long parallel but otherwise randomly packed water channels surrounded by partially hydrophilic side branches, forming inverted-micelle cylinders. At 20 vol% water, the water channels have diameters of between 1.8 and 3.5 nm, with an average of 2.4 nm. Nafion crystallites (similar to 10 vol%), which form physical crosslinks that are crucial for the mechanical properties of Nafion films, are elongated and parallel to the water channels, with cross-sections of similar to(5nm)(2). Simulations for various other models of Nafion, including Gierke's cluster and the polymer-bundle model, do not match the scattering data. The new model can explain important features of Nafion, including fast diffusion of water and protons through Nafion and its persistence at low temperatures. C1 [Schmidt-Rohr, Klaus; Chen, Qiang] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. [Schmidt-Rohr, Klaus; Chen, Qiang] Iowa State Univ, Dept Chem, Ames, IA 50011 USA. RP Schmidt-Rohr, K (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA. EM srohr@iastate.edu NR 50 TC 649 Z9 656 U1 42 U2 357 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 1476-1122 J9 NAT MATER JI Nat. Mater. PD JAN PY 2008 VL 7 IS 1 BP 75 EP 83 DI 10.1038/nmat2074 PG 9 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Chemistry; Materials Science; Physics GA 247YE UT WOS:000252117700024 PM 18066069 ER PT J AU Chan, CK Peng, HL Liu, G McIlwrath, K Zhang, XF Huggins, RA Cui, Y AF Chan, Candace K. Peng, Hailin Liu, Gao McIlwrath, Kevin Zhang, Xiao Feng Huggins, Robert A. Cui, Yi TI High-performance lithium battery anodes using silicon nanowires SO NATURE NANOTECHNOLOGY LA English DT Article ID ION-BATTERIES; NEGATIVE-ELECTRODE; SEMICONDUCTOR NANOWIRES; NANOSTRUCTURED SILICON; AMORPHOUS-SILICON; GROWTH; STORAGE; POWDER; CELLS; LI AB There is great interest in developing rechargeable lithium batteries with higher energy capacity and longer cycle life for applications in portable electronic devices, electric vehicles and implantable medical devices(1). Silicon is an attractive anode material for lithium batteries because it has a low discharge potential and the highest known theoretical charge capacity (4,200 mAh g(-1); ref. 2). Although this is more than ten times higher than existing graphite anodes and much larger than various nitride and oxide materials(3,4), silicon anodes have limited applications(5) because silicon's volume changes by 400% upon insertion and extraction of lithium, which results in pulverization and capacity fading(2). Here, we show that silicon nanowire battery electrodes circumvent these issues as they can accommodate large strain without pulverization, provide good electronic contact and conduction, and display short lithium insertion distances. We achieved the theoretical charge capacity for silicon anodes and maintained a discharge capacity close to 75% of this maximum, with little fading during cycling. C1 [Chan, Candace K.] Stanford Univ, Dept Chem, Stanford, CA 94305 USA. [Peng, Hailin; Huggins, Robert A.; Cui, Yi] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA. [Liu, Gao] Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. [Zhang, Xiao Feng] Hitachi High Technol Amer Inc, Electron Microscope Div, Pleasanton, CA 94558 USA. RP Chan, CK (reprint author), Stanford Univ, Dept Chem, Stanford, CA 94305 USA. EM yicui@stanford.edu RI Peng, Hailin/F-1497-2010; Cui, Yi/L-5804-2013; Chan, Candace/L-8175-2013 OI Cui, Yi/0000-0002-6103-6352; NR 29 TC 3043 Z9 3103 U1 350 U2 2729 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 1748-3387 J9 NAT NANOTECHNOL JI Nat. Nanotechnol. PD JAN PY 2008 VL 3 IS 1 BP 31 EP 35 DI 10.1038/nnano.2007.411 PG 5 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Science & Technology - Other Topics; Materials Science GA 247XX UT WOS:000252117000012 PM 18654447 ER PT J AU Zhou, C Berciu, M AF Zhou, Chenggang Berciu, Mona TI Spectral weight transfer in the integer quantum Hall effect and its consequences SO NATURE PHYSICS LA English DT Article ID RESISTANCE FLUCTUATIONS; HOFSTADTER SPECTRUM; BERRY PHASE; STATES; LOCALIZATION; HYPERORBITS; SYSTEMS; CHARGES; SAMPLES; FLUID AB The energy spectrum of a two-dimensional electron gas placed in a transversal magnetic field B consists of quantized Landau levels. In the absence of disorder, the degeneracy of each Landau level is N = BA/phi(0), where A is the area of the sample and phi(0) = h/e is the magnetic flux quantum. With disorder, localized states appear at the top and bottom of the broadened Landau level, whereas states in the centre of the Landau level (the critical region) remain delocalized. This single-electron theory adequately explains most aspects of the integer quantum Hall effect(1). One unnoticed issue is the location of the new states that appear in the Landau level with increasing B. Here, we show that they appear predominantly inside the critical region. This situation leads to a 'spectral ordering' of the localized states, which explains the stripes observed in measurements of the local inverse compressibility(2,3), of two-terminal conductance(4) and of Hall and longitudinal resistances(5) without the need to invoke interactions as done in previous work(6-8). C1 [Zhou, Chenggang] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA. [Berciu, Mona] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada. RP Zhou, C (reprint author), Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, POB 2008,MS 6493, Oak Ridge, TN 37831 USA. EM zhouc@ornl.gov RI Berciu, Mona/O-4889-2014 NR 27 TC 3 Z9 3 U1 0 U2 6 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 1745-2473 J9 NAT PHYS JI Nat. Phys. PD JAN PY 2008 VL 4 IS 1 BP 24 EP 27 DI 10.1038/nphys786 PG 4 WC Physics, Multidisciplinary SC Physics GA 247YW UT WOS:000252119500018 ER PT J AU Reed, EJ Manaa, MR Fried, LE Glaesemann, KR Joannopoulos, JD AF Reed, Evan J. Manaa, M. Riad Fried, Laurence E. Glaesemann, Kurt R. Joannopoulos, J. D. TI A transient semimetallic layer in detonating nitromethane SO NATURE PHYSICS LA English DT Article ID CHEMICAL-REACTION-ZONE; MOLECULAR-DYNAMICS; LIQUID NITROMETHANE; SOLID NITROMETHANE; AMORPHOUS-SILICON; TRANSITION; SIMULATIONS; STATES AB Despite decades of research, the microscopic details and extreme states of matter found within a detonating high explosive have yet to be elucidated. Here we present the first quantum molecular-dynamics simulation of a shocked explosive near detonation conditions. We discover that the wide-bandgap insulator nitromethane (CH3NO2) undergoes chemical decomposition and a transformation into a semimetallic state for a limited distance behind the detonation front. We find that this transformation is associated with the production of charged decomposition species and provides a mechanism to explain recent experimental observations. C1 [Reed, Evan J.; Manaa, M. Riad; Fried, Laurence E.; Glaesemann, Kurt R.] Lawrence Livermore Natl Lab, Chem Mat Earth & Life Sci Directorate, Livermore, CA 94550 USA. [Reed, Evan J.; Joannopoulos, J. D.] MIT, Dept Phys, Cambridge, MA 02139 USA. RP Reed, EJ (reprint author), Lawrence Livermore Natl Lab, Chem Mat Earth & Life Sci Directorate, Livermore, CA 94550 USA. EM reed23@llnl.gov RI Glaesemann, Kurt/B-4841-2010; Fried, Laurence/L-8714-2014; OI Fried, Laurence/0000-0002-9437-7700; Glaesemann, Kurt/0000-0002-9512-1395 NR 36 TC 82 Z9 84 U1 5 U2 24 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 1745-2473 J9 NAT PHYS JI Nat. Phys. PD JAN PY 2008 VL 4 IS 1 BP 72 EP 76 DI 10.1038/nphys806 PG 5 WC Physics, Multidisciplinary SC Physics GA 247YW UT WOS:000252119500028 ER PT J AU Nelson, CM Inman, JL Bissell, MJ AF Nelson, Celeste M. Inman, Jamie L. Bissell, Mina J. TI Three-dimensional lithographically defined organotypic tissue arrays for quantitative analysis of morphogenesis and neoplastic progression SO NATURE PROTOCOLS LA English DT Article ID COLLAGEN MEMBRANES; CELLS; ORGANIZATION; FABRICATION; HYDROGELS; MATRICES; CULTURES; GROWTH AB Here, we describe a simple micromolding method to construct three-dimensional arrays of organotypic epithelial tissue structures that approximate in vivo histology. An elastomeric stamp containing an array of posts of defined geometry and spacing is used to mold microscale cavities into the surface of type I collagen gels. Epithelial cells are seeded into the cavities and covered with a second layer of collagen. The cells reorganize into hollow tissues corresponding to the geometry of the cavities. Patterned tissue arrays can be produced in 3-4 h and will undergo morphogenesis over the following 1-3 d. The protocol can easily be adapted to study a variety of tissues and aspects of normal and neoplastic development. C1 [Nelson, Celeste M.] Princeton Univ, Dept Chem Engn, Princeton, NJ 08544 USA. [Inman, Jamie L.; Bissell, Mina J.] Dept Cell Biol & Imaging, Div Life Sci, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Nelson, CM (reprint author), Princeton Univ, Dept Chem Engn, Princeton, NJ 08544 USA. EM celesten@princeton.edu FU NCI NIH HHS [CA57621, R01 CA057621, R01 CA057621-08, R01 CA064786, R01 CA064786-08, R37 CA064786, CA64786] NR 21 TC 63 Z9 64 U1 1 U2 12 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 1754-2189 J9 NAT PROTOC JI Nat. Protoc. PY 2008 VL 3 IS 4 BP 674 EP 678 DI 10.1038/nprot.2008.35 PG 5 WC Biochemical Research Methods SC Biochemistry & Molecular Biology GA 287JX UT WOS:000254914500014 PM 18388950 ER PT J AU Woo, HK Northen, TR Yanes, O Siuzdak, G AF Woo, Hin-Koon Northen, Trent R. Yanes, Oscar Siuzdak, Gary TI Nanostructure-initiator mass spectrometry: a protocol for preparing and applying NIMS surfaces for high-sensitivity mass analysis SO NATURE PROTOCOLS LA English DT Article ID ASSISTED LASER DESORPTION/IONIZATION; DESORPTION-IONIZATION; CARBON NANOTUBES; POROUS ALUMINA; MATRIX; SILICON AB Nanostructure-initiator mass spectrometry (NIMS) is a new surface-based MS technique that uses a nanostructured surface to trap liquid ('initiator') compounds. Analyte materials adsorbed onto this 'clathrate' surface are subsequently released by laser irradiation for mass analysis. In this protocol, we describe the preparation of NIMS surfaces capable of producing low background and high-sensitivity mass spectrometric measurement using the initiator compound BisF17. Examples of analytes that adsorb to this surface are small molecules, drugs, lipids, carbohydrates and peptides. Typically, NIMS is used to analyze samples ranging from simple analytical standards and proteolytic digests to more complex samples such as tissues, cells and biofluids. Critical experimental considerations of NIMS are described. Specifically, NIMS sensitivity is examined as a function of pre-etch cleaning treatment, etching current density, etching time, initiator composition, sample concentration, sample deposition method and laser fluence. Typically, NIMS surface preparation can be completed in less than 2 h. Subsequent sample preparation requires 1-5 min, depending on sample deposition method. Mass spectrometric data acquisition typically takes 1-30 s per sample. C1 [Woo, Hin-Koon; Northen, Trent R.; Yanes, Oscar; Siuzdak, Gary] Scripps Res Inst, Scripps Ctr Mass Spectrometry, Dept Mol Biol, La Jolla, CA 92037 USA. [Northen, Trent R.] Lawrence Berkeley Natl Lab, Div Life Sci, Dept Genome Stabil, Berkeley, CA 94720 USA. RP Siuzdak, G (reprint author), Scripps Res Inst, Scripps Ctr Mass Spectrometry, Dept Mol Biol, 10550 N Torrey Pines Rd, La Jolla, CA 92037 USA. EM siuzdak@scripps.edu RI Northen, Trent/K-3139-2012; Yanes, Oscar/N-3630-2016; OI Yanes, Oscar/0000-0003-3695-7157; Northen, Trent/0000-0001-8404-3259 FU DOE GTL [MAGGIE, GeneMAP]; US Department of Energy Office of Science [DE-AC02-05CH11231] FX This project was funded by DOE GTL Grants (MAGGIE and GeneMAP). This work was supported by the US Department of Energy Office of Science under contract no. DE-AC02-05CH11231 through the Genomics: GTL Research Program. NR 11 TC 61 Z9 61 U1 4 U2 48 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 1754-2189 J9 NAT PROTOC JI Nat. Protoc. PY 2008 VL 3 IS 8 BP 1341 EP 1349 DI 10.1038/nprot.2008.110 PG 9 WC Biochemical Research Methods SC Biochemistry & Molecular Biology GA 337GR UT WOS:000258424000011 PM 18714302 ER PT J AU Costantino, DA Pfingsten, JS Rambo, RP Kieft, JS AF Costantino, David A. Pfingsten, Jennifer S. Rambo, Robert P. Kieft, Jeffrey S. TI tRNA-mRNA mimicry drives translation initiation from a viral IRES SO NATURE STRUCTURAL & MOLECULAR BIOLOGY LA English DT Article ID RIBOSOME ENTRY SITE; CRICKET PARALYSIS VIRUS; HEPATITIS-C VIRUS; CRYSTALLOGRAPHIC STRUCTURE DETERMINATION; METHIONINE-INDEPENDENT INITIATION; SELECTIVE 2'-HYDROXYL ACYLATION; SINGLE NUCLEOTIDE RESOLUTION; PRIMER EXTENSION SHAPE; AMINOACYL-TRANSFER-RNA; STRUCTURAL BASIS AB Internal ribosome entry site (IRES) RNAs initiate protein synthesis in eukaryotic cells by a noncanonical cap-independent mechanism. IRESes are critical for many pathogenic viruses, but efforts to understand their function are complicated by the diversity of IRES sequences as well as by limited high-resolution structural information. The intergenic region (IGR) IRESes of the Dicistroviridae viruses are powerful model systems to begin to understand IRES function. Here we present the crystal structure of a Dicistroviridae IGR IRES domain that interacts with the ribosome's decoding groove. We find that this RNA domain precisely mimics the transfer RNA anticodon-messenger RNA codon interaction, and its modeled orientation on the ribosome helps explain translocation without peptide bond formation. When combined with a previous structure, this work completes the first high-resolution description of an IRES RNA and provides insight into how RNAs can manipulate complex biological machines. C1 [Costantino, David A.; Pfingsten, Jennifer S.; Kieft, Jeffrey S.] Univ Colorado Denver, Dept Biochem & Mol Genet, Aurora, CO 80045 USA. [Rambo, Robert P.] Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA. [Costantino, David A.; Pfingsten, Jennifer S.; Kieft, Jeffrey S.] Hlth Sci Ctr, Aurora, CO 80045 USA. RP Kieft, JS (reprint author), Univ Colorado Denver, Dept Biochem & Mol Genet, Mail Stop 8101,POB 6511, Aurora, CO 80045 USA. EM jeffrey.kieft@uchsc.edu FU NIAID NIH HHS [AI072187, R03 AI072187, R03 AI072187-01A1, R03 AI072187-02]; NIGMS NIH HHS [GM072560, R01 GM072560, R01 GM072560-01, R01 GM072560-02, R01 GM072560-03, R01 GM072560-04, R01 GM072560-05] NR 59 TC 86 Z9 87 U1 3 U2 8 PU NATURE PUBLISHING GROUP PI NEW YORK PA 75 VARICK STREET, 9TH FLOOR, NEW YORK, NY 10013-1917 USA SN 1545-9985 J9 NAT STRUCT MOL BIOL JI Nat. Struct. Mol. Biol. PD JAN PY 2008 VL 15 IS 1 BP 57 EP 64 DI 10.1038/nsmb1351 PG 8 WC Biochemistry & Molecular Biology; Biophysics; Cell Biology SC Biochemistry & Molecular Biology; Biophysics; Cell Biology GA 247YP UT WOS:000252118800010 PM 18157151 ER PT J AU Kohout, SC Ulbrich, MH Bell, SC Isacoff, EY AF Kohout, Susy C. Ulbrich, Maximilian H. Bell, Sarah C. Isacoff, Ehud Y. TI Subunit organization and functional transitions in Ci-VSP SO NATURE STRUCTURAL & MOLECULAR BIOLOGY LA English DT Article ID PHOSPHOINOSITIDE PHOSPHATASE-ACTIVITY; SHAKER K+ CHANNEL; POTASSIUM CHANNEL; VOLTAGE SENSOR; CRYSTAL-STRUCTURE; DOMAIN; FLUORESCENCE; ACTIVATION; PORE AB Voltage-sensing domains (VSDs) confer voltage dependence on effector domains of membrane proteins. Ion channels use four VSDs to control a gate in the pore domain, but in the recently discovered phosphatase Ci-VSP, the number of subunits has been unknown. Using single-molecule microscopy to count subunits and voltage clamp fluorometry to detect structural dynamics, we found Ci-VSP to be a monomer, which operates independently, but nevertheless undergoes multiple voltage-dependent conformational transitions. C1 [Kohout, Susy C.; Ulbrich, Maximilian H.; Isacoff, Ehud Y.] Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA. [Bell, Sarah C.] Univ Calif Berkeley, Chem Biol Grad Program, Berkeley, CA 94720 USA. [Isacoff, Ehud Y.] Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. [Isacoff, Ehud Y.] Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA. RP Isacoff, EY (reprint author), Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA. EM ehud@berkeley.edu FU NINDS NIH HHS [R01NS035549] NR 18 TC 86 Z9 86 U1 1 U2 6 PU NATURE PUBLISHING GROUP PI NEW YORK PA 75 VARICK STREET, 9TH FLOOR, NEW YORK, NY 10013-1917 USA SN 1545-9985 J9 NAT STRUCT MOL BIOL JI Nat. Struct. Mol. Biol. PD JAN PY 2008 VL 15 IS 1 BP 106 EP 108 DI 10.1038/nsmb1320 PG 3 WC Biochemistry & Molecular Biology; Biophysics; Cell Biology SC Biochemistry & Molecular Biology; Biophysics; Cell Biology GA 247YP UT WOS:000252118800018 PM 18084307 ER PT J AU Sydow, KR AF Sydow, Kenneth R. TI Shipboard maintenance: What do Surface Warfare Officers need to know-and when do they need to know it? SO NAVAL ENGINEERS JOURNAL LA English DT Article AB As the Navy has moved into the 21st century and the War on Terror has unfolded, the challenges to ship maintenance management have never been greater. These challenges include: a continuing high operating tempo compounded by less predictable schedules and coupled with fewer, shorter scheduled opportunities to conduct maintenance; a fleet of fewer albeit more capable-and therefore more complex-ships; a trend toward smaller, perhaps less stable crews to operate and maintain the ships; and continuing competition for the available budget dollars between operations and maintenance, as well as between current and future readiness concerns. In an era of "operations focused maintenance," what is the role of the Surface Warfare Officer (SWO) in managing their shipboard maintenance? What do they need to know, and when do they need to know it? This paper addresses these questions and related issues and offers, where applicable, some near-term and long-term recommendations for improvement. C1 US DOE, Div Naval Reactors, Washington, DC 20585 USA. RP Sydow, KR (reprint author), US DOE, Div Naval Reactors, Washington, DC 20585 USA. NR 16 TC 0 Z9 0 U1 0 U2 1 PU AMER SOC NAVAL ENG INC PI ALEXANDRIA PA 1452 DUKE STREET, ALEXANDRIA, VA 22314-3458 USA SN 0028-1425 J9 NAV ENG J JI Nav. Eng. J. PY 2008 VL 120 IS 2 BP 89 EP 98 DI 10.1111/j.1559-3584.2008.00127.x PG 10 WC Engineering, Marine; Engineering, Civil; Oceanography SC Engineering; Oceanography GA 352VT UT WOS:000259526200009 ER PT S AU Yan, GH Eidenbenz, S AF Yan, Guanhua Eidenbenz, Stephan BE Das, A Pung, HK Lee, FBS Wong, LWC TI DDoS mitigation in non-cooperative environments SO NETWORKING 2008: AD HOC AND SENSOR NETWORKS, WIRELESS NETWORKS, NEXT GENERATION INTERNET, PROCEEDINGS SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Proceedings Paper CT 7th International IFIP-TC6 Networking Conference CY MAY 05-09, 2008 CL Singapore, SINGAPORE AB Distributed denial of service (DDoS) attacks have plagued the Internet for many years. We propose a system to defend against DDoS attacks in a non-cooperative environment, where upstream intermediate networks need to be given an economic incentive in order for them to cooperate in the attack mitigation. Lack of such incentives is a root cause for the rare deployment of distributed DDoS mitigation schemes. Our system is based on game-theoretic principles that provably provide incentives to each participating AS (Autonomous Systems) to report its true defense costs to the victim, which computes and compensates the most cost-efficient (yet still effective) set of defenders ASs. We also present simulation results with real AS-level topologies to demonstrate the economic feasibility of our approach. C1 [Yan, Guanhua; Eidenbenz, Stephan] Los Alamos Natl Lab, Informat Sci CCS 3, Los Alamos, NM 87544 USA. RP Yan, GH (reprint author), Los Alamos Natl Lab, Informat Sci CCS 3, POB 1663, Los Alamos, NM 87544 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 978-3-540-79548-3 J9 LECT NOTES COMPUT SC PY 2008 VL 4982 BP 599 EP 611 PG 13 WC Computer Science, Hardware & Architecture; Computer Science, Theory & Methods SC Computer Science GA BHS17 UT WOS:000255924000052 ER PT J AU Louis, ED Keating, GA Bogen, KT Rios, E Pellegrino, KM Factor-Litvak, P AF Louis, Elan D. Keating, Garrett A. Bogen, Kenneth T. Rios, Eileen Pellegrino, Kathryn M. Factor-Litvak, Pam TI Dietary epidemiology of essential tremor: Meat consumption and meat cooking practices SO NEUROEPIDEMIOLOGY LA English DT Article DE dietary epidemiology, essential tremor; essential tremor; toxin; harmane; diet, tremor; metabolism, meat ID HARMALINE-INDUCED TREMOR; 3 ELDERLY POPULATIONS; FREQUENCY QUESTIONNAIRE; BETA-CARBOLINE; CENTRAL SPAIN; PREVALENCE; REPRODUCIBILITY; CHILDHOOD; RISK; GENE AB Background/Aim: Harmane [1-methyl-9H-pyrido(3,4-b) indole] is a tremor-producing neurotoxin. Blood harmane concentrations are elevated in essential tremor (ET) patients for unclear reasons. Potential mechanisms include increased dietary harmane intake (especially through well-cooked meat) or genetic-metabolic factors. We tested the hypothesis that meat consumption and level of meat doneness are higher in ET cases than in controls. Methods: Detailed data were collected using the Lawrence Livermore National Laboratory Meat Questionnaire. Results: Total current meat consumption was greater in men with than without ET (135.3 +/- 71.1 vs. 110.6 +/- 8 80.4 g/day, p = 0.03) but not in women with versus without ET (80.6 +/- 8 50.0 vs. 79.3 +/- 51.0 g/day, p = 0.76). In an adjusted logistic regression analysis in males, higher total current meat consumption was associated with ET (OR = 1.006, p = 0.04, i.e., with 10 additional g/ day of meat, odds of ET increased by 6%). Male cases had higher odds of being in the highest than lowest quartile of total current meat consumption ( adjusted OR = 21.36, p = 0.001). Meat doneness level was similar in cases and controls. Conclusion: This study provides evidence of a dietary difference between male ET cases and male controls. The etiological ramifications of these results warrant additional investigation. Copyright (c) 2008 S. Karger AG, Basel. C1 [Louis, Elan D.; Rios, Eileen; Pellegrino, Kathryn M.] Columbia Univ, Gertrude H Sergievsky Ctr, Columbia Univ Coll Phys & Surg, New York, NY 10027 USA. [Louis, Elan D.] Columbia Univ, Dept Neurol, Columbia Univ Coll Phys & Surg, New York, NY 10027 USA. [Louis, Elan D.] Columbia Univ, Taub Inst Res Alzheimer Dis & Aging Brain, Columbia Univ Coll Phys & Surg, New York, NY 10027 USA. [Louis, Elan D.; Factor-Litvak, Pam] Columbia Univ, Dept Epidemiol, Mailman Sch Publ Hlth, New York, NY USA. [Keating, Garrett A.; Bogen, Kenneth T.] Lawrence Livermore Natl Lab, Livermore, CA USA. RP Louis, ED (reprint author), Neurol Inst, 710 W 168Th St,Unit 198, New York, NY 10032 USA. EM ed12@columbia.edu FU NCRR NIH HHS [RR00645, M01 RR000645]; NIEHS NIH HHS [P30 ES009089]; NINDS NIH HHS [R01 NS042859, R01 NS039422] NR 26 TC 3 Z9 3 U1 0 U2 1 PU KARGER PI BASEL PA ALLSCHWILERSTRASSE 10, CH-4009 BASEL, SWITZERLAND SN 0251-5350 J9 NEUROEPIDEMIOLOGY JI Neuroepidemiology PY 2008 VL 30 IS 3 BP 161 EP 166 DI 10.1159/000122333 PG 6 WC Public, Environmental & Occupational Health; Clinical Neurology SC Public, Environmental & Occupational Health; Neurosciences & Neurology GA 289XL UT WOS:000255087100006 PM 18382115 ER PT J AU Liebling, CNB Schiffer, WK AF Liebling, Courtney N. B. Schiffer, W. K. TI Imaging cue-induced brain activations with (18)FDG PET in behaving animals SO NEUROIMAGE LA English DT Meeting Abstract CT 7th International Symposium on Functional Neuroreceptor Mapping of the Living Brain CY JUL 17-19, 2008 CL Pittsburgh, PA SP Natl Inst Ment Hlth, Amgen, GE Healthcare, GlaxoSmithKline, Johnson & Johnson, MathworksMatlab, Merek & Co Inc, Pfizer, PMOD Technol, Raytest, GmBH, Siemens Med Syst C1 [Liebling, Courtney N. B.; Schiffer, W. K.] Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 1053-8119 J9 NEUROIMAGE JI Neuroimage PY 2008 VL 41 SU 2 BP T190 EP T190 DI 10.1016/j.neuroimage.2008.04.157 PG 1 WC Neurosciences; Neuroimaging; Radiology, Nuclear Medicine & Medical Imaging SC Neurosciences & Neurology; Radiology, Nuclear Medicine & Medical Imaging GA 326QK UT WOS:000257673800172 ER PT J AU Liebling, CNB Schiffer, WK AF Liebling, Courtney N. B. Schiffer, W. K. TI Imaging cue-induced striatal dopamine release with [C-11]-raclopride PET in behaving animals SO NEUROIMAGE LA English DT Meeting Abstract CT 7th International Symposium on Functional Neuroreceptor Mapping of the Living Brain CY JUL 17-19, 2008 CL Pittsburgh, PA SP Natl Inst Ment Hlth, Amgen, GE Healthcare, GlaxoSmithKline, Johnson & Johnson, MathworksMatlab, Merek & Co Inc, Pfizer, PMOD Technol, Raytest, GmBH, Siemens Med Syst C1 [Liebling, Courtney N. B.; Schiffer, W. K.] Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 1053-8119 J9 NEUROIMAGE JI Neuroimage PY 2008 VL 41 SU 2 BP T130 EP T130 DI 10.1016/j.neuroimage.2008.04.098 PG 1 WC Neurosciences; Neuroimaging; Radiology, Nuclear Medicine & Medical Imaging SC Neurosciences & Neurology; Radiology, Nuclear Medicine & Medical Imaging GA 326QK UT WOS:000257673800114 ER PT J AU Kraus, RH Volegov, P Matlachov, A Espy, M AF Kraus, R. H., Jr. Volegov, P. Matlachov, A. Espy, M. TI Toward direct neural current imaging by resonant mechanisms at ultra-low field SO NEUROIMAGE LA English DT Article ID MICROTESLA MAGNETIC-FIELDS; NEURONAL-ACTIVITY; MRI DETECTION; SIMULTANEOUS MAGNETOENCEPHALOGRAPHY; DIPOLE LOCALIZATION; HUMAN BRAIN; CONTRAST; CORTEX; SIGNAL; NMR AB A variety of techniques have been developed to noninvasively image human brain function that are central to research and clinical applications endeavoring to understand how the brain works and to detect pathology (e.g. epilepsy, schizophrenia, etc.). Current methods can be broadly divided into those that rely on hemodynamic responses as indicators of neural activity (e.g. fMRI, optical, and PET) and methods that measure neural activity directly (e.g. MEG and EEG). The approaches all suffer from poor temporal resolution, poor spatial localization, or indirectly measuring neural activity. It has been suggested that the proton spin population will be altered by neural activity resulting in a measurable effect on the NMR signal that can be imaged by MRI methods. We present here the physical basis and experimental evidence for the resonant interaction between magnetic fields such as those arising from neural activity, with the spin population in ultra-low field (mu T) NMR experiments. We demonstrate through the use of current phantoms that, in the case of correlated zero-mean current distributions such as those one might expect to result from neural activity, resonant interactions will produce larger changes in the observed NMR signal than dephasing. The observed resonant interactions reported here might one day form the foundation of a new functional neuroimaging modality ultimately capable of simultaneous direct neural activity and brain anatomy tomography. (C) 2007 Elsevier Inc. All rights reserved. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Kraus, RH (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. EM rkraus@lanl.gov NR 28 TC 52 Z9 53 U1 2 U2 11 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 1053-8119 J9 NEUROIMAGE JI Neuroimage PD JAN 1 PY 2008 VL 39 IS 1 BP 310 EP 317 DI 10.1016/j.neuroimage.2007.07.058 PG 8 WC Neurosciences; Neuroimaging; Radiology, Nuclear Medicine & Medical Imaging SC Neurosciences & Neurology; Radiology, Nuclear Medicine & Medical Imaging GA 237WB UT WOS:000251406000028 PM 17920296 ER PT S AU Morfin, JG AF Morfin, Jorge G. BE Yasuda, O Ohmori, C Mondal, N TI Present and future neutrino and anti-neutrino cross section and nuclear effects studies SO NEUTRINO FACTORIES, SUPERBEAMS AND BETABEAMS SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 9th International Workshop on Neutrino Factories, Superbeams and Betabeams CY AUG 06-11, 2007 CL Okayama Univ, Okayama, JAPAN SP Japan Soc Promot Sci, Indian Dept Sci & Technol HO Okayama Univ DE neutrino; cross section; nuclear effects ID K2K EXPERIMENT; DETECTOR; CONSTRUCTION; PERFORMANCE AB A careful study of neutrino scattering physics is an essential part of the program to answer many open questions being addressed by several diferent physics communities. A deeper understanding of nuclear effects induced by neutrinos and considerably more accurate measurements of neutrino exclusive cross sections are crucial for minimizing systematics of neutrino oscillation experiments. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Morfin, JG (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. 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 978-0-7354-0500-4 J9 AIP CONF PROC PY 2008 VL 981 BP 60 EP 64 PG 5 WC Physics, Particles & Fields SC Physics GA BHJ54 UT WOS:000253569400014 ER PT S AU Bishai, M AF Bishai, Mary CA US Long Baseline Study Grp BE Yasuda, O Ohmori, C Mondal, N TI The US long baseline neutrino experiment study SO NEUTRINO FACTORIES, SUPERBEAMS AND BETABEAMS SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 9th International Workshop on Neutrino Factories, Superbeams and Betabeams CY AUG 06-11, 2007 CL Okayama Univ, Okayama, JAPAN SP Japan Soc Promot Sci, Indian Dept Sci & Technol HO Okayama Univ DE neutrino oscillation; neutrino mixing; long baseline ID DETECTOR AB The US Long Baseline Neutrino Experiment Study was commissioned jointly by Brookhaven National Laboratory (BNL)and Fermi National Accelerator Laboratory (FNAL) to investigate the potential for future U.S. based long baseline neutrino oscillation experiments using MW class conventional neutrino beams that can be produced at FNAL. The experimental baselines are based on two possible detector locations: 1) off-axis to the existing FNAL NuMI beamline at baselines of 700 to 810 km and 2) NSF's proposed future Deep Underground Science and Engineering Laboratory (DUSEL) at baselines greater than 1000km. Two detector technologies are considered: a megaton class Water Cherenkov detector deployed deep underground at a DUSEL site, or a 100kT Liquid Argon Time-Projection Chamber (TPC) deployed on the surface at any of the proposed sites. The physics sensitivities of the proposed experiments are summarized. We find that conventional horn focused wide-band neutrino beam options from FNAL aimed at a massive detector with a baseline of > 1000km have the best sensitivity to CP violation and the neutrino mass hierarchy for values of the mixing angle theta(13) down to 2 degrees. C1 [Bishai, Mary] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Bishai, M (reprint author), Brookhaven Natl Lab, Dept Phys, Bldg 510E,POB 5000, Upton, NY 11973 USA. NR 14 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 978-0-7354-0500-4 J9 AIP CONF PROC PY 2008 VL 981 BP 102 EP 106 PG 5 WC Physics, Particles & Fields SC Physics GA BHJ54 UT WOS:000253569400023 ER PT S AU Li, DR AF Li, Derun BE Yasuda, O Ohmori, C Mondal, N TI Muon cooling R&D progress in the US SO NEUTRINO FACTORIES, SUPERBEAMS AND BETABEAMS SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 9th International Workshop on Neutrino Factories, Superbeams and Betabeams CY AUG 06-11, 2007 CL Okayama Univ, Okayama, JAPAN SP Japan Soc Promot Sci, Indian Dept Sci & Technol HO Okayama Univ DE muon ionization cooling; RF cavity; superconducting solenoids; liquid hydrogen absorber; beryllium windows; neutrino factory; muon collider AB Muon ionization cooling R&D is important for a neutrino factory and future muon collider. In addition to theoretical studies, much progress has been made in muon cooling channel hardware R&D since NuFact-2006. This paper reports the progress on hardware R&D that includes experimental RF test programs using 805-MHz RF cavity, superconducting (SC) solenoids (coupling coils), 201-MHz RF cavity, liquid hydrogen absorber and MUCOOL Test Area (MTA) experiment preparation for beam tests. C1 Lawrence Berkeley Natl Lab, Div Accelerator & Fus Res, Berkeley, CA 94720 USA. RP Li, DR (reprint author), Lawrence Berkeley Natl Lab, Div Accelerator & Fus Res, 1 Cyclotron Rd, Berkeley, CA 94720 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 978-0-7354-0500-4 J9 AIP CONF PROC PY 2008 VL 981 BP 112 EP 116 PG 5 WC Physics, Particles & Fields SC Physics GA BHJ54 UT WOS:000253569400025 ER PT S AU Berg, JS AF Berg, J. Scott BE Yasuda, O Ohmori, C Mondal, N TI Using FFAGs in the creation of neutrino beams SO NEUTRINO FACTORIES, SUPERBEAMS AND BETABEAMS SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 9th International Workshop on Neutrino Factories, Superbeams and Betabeams CY AUG 06-11, 2007 CL Okayama Univ, Okayama, JAPAN SP Japan Soc Promot Sci, Indian Dept Sci & Technol HO Okayama Univ DE FFAG; fixed field alternating gradient accelerator; neutrino factory; superbeam; beta beam ID FIELD ALTERNATING-GRADIENT; ACCELERATORS AB A number of accelerator-based facilities have been proposed for the creation of neutrino beams: superbeams, neutrino factories, and beta beams. Fixed field alternating gradient accelerators (FFAGs) have potential uses in an of these facilities. Superbeams and neutrino factories require high power proton drivers for the production of pions; FFAGs can beneficial for accelerating protons for those machines. FFAGs can reduce the cost of accelerating muons in a neutrino factory because they enable the muons to make many passes through the RF cavities and still accelerate rapidly. FFAGs have potential uses in production of radioactive ions for a beta beam facility, since radioactive ions that decay into high energy neutrinos in their rest frame may potentially be produced in a ring, and the large energy acceptance of an FFAG may be useful for maximizing beam lifetime in such a ring. Finally, FFAGs have been contemplated for use in ionization cooling rings for neutrino factories, since the equilibrium distribution in ionization cooling has a large energy spread for which an FFAG's large energy acceptance is needed, and FFAGs may make it feasible to inject and extract from such a ring. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Berg, JS (reprint author), Brookhaven Natl Lab, POB 5000, Upton, NY 11973 USA. RI Berg, Joseph/E-8371-2014 OI Berg, Joseph/0000-0002-5955-6973 NR 44 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 978-0-7354-0500-4 J9 AIP CONF PROC PY 2008 VL 981 BP 117 EP 121 PG 5 WC Physics, Particles & Fields SC Physics GA BHJ54 UT WOS:000253569400026 ER PT S AU Bross, A Ellis, M Geer, S Mena, O Pascoli, S AF Bross, Alan Ellis, Malcolm Geer, Steve Mena, Olga Pascoli, Silvia BE Yasuda, O Ohmori, C Mondal, N TI The low-energy Neutrino Factory SO NEUTRINO FACTORIES, SUPERBEAMS AND BETABEAMS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th International Workshop on Neutrino Factories, Superbeams and Betabeams CY AUG 06-11, 2007 CL Okayama Univ, Okayama, JAPAN SP Japan Soc Promot Sci, Indian Dept Sci & Technol HO Okayama Univ DE Neutrino Factory AB An analysis of the neutrino oscillation physics capability of a low energy Neutrino Factory is presented, including a first simulation of detector efficiency and event energy threshold. C1 [Bross, Alan; Ellis, Malcolm; Geer, Steve] Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. [Mena, Olga] Univ Roma La Sapienza, Ist Nazl Fis Nucl, Sez Rome, Dipartimento Fis, I-00185 Rome, Italy. [Pascoli, Silvia] Univ Durham, Dept Phys, IPPP, Durham DH1 3LE, England. [Ellis, Malcolm] Brunel Univ, Uxbridge UB8 3 PH, Middx, England. RP Bross, A (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. EM 1-Malcolm.Ellis@brunel.ac.uk FU European Programme "The Quest for Unification" [MRTN-CT-2004-5033669]; Fermi National Accelerator Laboratory; U.S. Department of Energy [DEAC02-76CH03000]; CARE [RII3-CT-2003-506395] FX This work was supported in part by the European Programme "The Quest for Unification" contract MRTN-CT-2004-5033669, and by the Fermi National Accelerator Laboratory, which is operated by the Fermi Research Association, under contract No. DEAC02-76CH03000 with the U.S. Department of Energy. SP acknowledges the support of CARE, contract number RII3-CT-2003-506395. OM and SP would like to thank the Theoretical Physics Department at Fermilab for their hospitality and support. NR 7 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 978-0-7354-0500-4 J9 AIP CONF PROC PY 2008 VL 981 BP 187 EP + PG 2 WC Physics, Particles & Fields SC Physics GA BHJ54 UT WOS:000253569400046 ER PT S AU Li, D Ohmori, C AF Li, D. Ohmori, C. BE Yasuda, O Ohmori, C Mondal, N TI Summary of working group on accelerator physics and machine design and R&Dd SO NEUTRINO FACTORIES, SUPERBEAMS AND BETABEAMS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th International Workshop on Neutrino Factories, Superbeams and Betabeams CY AUG 06-11, 2007 CL Okayama Univ, Okayama, JAPAN SP Japan Soc Promot Sci, Indian Dept Sci & Technol HO Okayama Univ DE neutrino factory; accelerator; proton driver; target; collection scheme; muon acceleration; muon collider AB Working Group on Accelerator Physics and Machine Design R&D at Nufact-2007 focuses on topics on accelerator physics and technical issues of hardware components associated with a Neutrino Factory or its subsystems. There were 32 presentations given at the working group. A special session was held to discuss collaboration opportunities with the Muon Collider Task Force (MCTF) at Fermilab in consideration of many overlaps in the machine R&D between a Neutrino Factory and a Muon Collider. Two more sessions were held jointly with Working Group 2 on muon collection schemes and other related subjects. C1 [Li, D.] Lawrence Berkeley Lab, Div Accelerator & Fus Res, 1 Cyclotron Rd, Berkeley, CA 94720 USA. [Ohmori, C.] KEK, Tsukuba, Ibaraki 3058501, Japan. RP Li, D (reprint author), Lawrence Berkeley Lab, Div Accelerator & Fus Res, 1 Cyclotron Rd, Berkeley, CA 94720 USA. NR 1 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 978-0-7354-0500-4 J9 AIP CONF PROC PY 2008 VL 981 BP 270 EP + PG 2 WC Physics, Particles & Fields SC Physics GA BHJ54 UT WOS:000253569400074 ER PT S AU Geer, S AF Geer, Steve BE Yasuda, O Ohmori, C Mondal, N TI Femilab Muon Collider Task Force SO NEUTRINO FACTORIES, SUPERBEAMS AND BETABEAMS SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 9th International Workshop on Neutrino Factories, Superbeams and Betabeams CY AUG 06-11, 2007 CL Okayama Univ, Okayama, JAPAN SP Japan Soc Promot Sci, Indian Dept Sci & Technol HO Okayama Univ DE ionization cooling; Muon Colliders AB A summary is given of results from the first year of Muon Collider Task Force activities. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Geer, S (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. NR 2 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 978-0-7354-0500-4 J9 AIP CONF PROC PY 2008 VL 981 BP 287 EP 289 PG 3 WC Physics, Particles & Fields SC Physics GA BHJ54 UT WOS:000253569400079 ER PT S AU Zisman, MS AF Zisman, Michael S. CA Mice Collaboration BE Yasuda, O Ohmori, C Mondal, N TI MICE construction status SO NEUTRINO FACTORIES, SUPERBEAMS AND BETABEAMS SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 9th International Workshop on Neutrino Factories, Superbeams and Betabeams CY AUG 06-11, 2007 CL Okayama Univ, Okayama, JAPAN SP Japan Soc Promot Sci, Indian Dept Sci & Technol HO Okayama Univ DE neutrino factory; muon ionization cooling AB MICE, the Muon Ionization Cooling Experiment, is an approved experiment at the Rutherford Appleton-Laboratory. In this paper, we briefly review the aims of the experiment give an overview of the system, and indicate the design and/or construction status of the various major subsystems that comprise the experiment. First beam is expected in January 2008. C1 Lawrence Berkeley Natl Lab, Ctr Beam Phys, Berkeley, CA 94720 USA. RP Zisman, MS (reprint author), Lawrence Berkeley Natl Lab, Ctr Beam Phys, Berkeley, CA 94720 USA. NR 2 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 978-0-7354-0500-4 J9 AIP CONF PROC PY 2008 VL 981 BP 293 EP 295 PG 3 WC Physics, Particles & Fields SC Physics GA BHJ54 UT WOS:000253569400081 ER PT S AU Li, D Dickson, M Virostek, S Zisman, M Bross, A Moretti, A Qlan, Z Norem, J Rininiei, R Huang, D Torun, Y SuninierS, D Lau, W Yang, S AF Li, D. Dickson, M. Virostek, S. Zisman, M. Bross, A. Moretti, A. Qlan, Z. Norem, J. Rininiei, R. Huang, D. Torun, Y. SuninierS, D. Lau, W. Yang, S. BE Yasuda, O Ohmori, C Mondal, N TI MUCOOL/MICE RF cavity R&D programs SO NEUTRINO FACTORIES, SUPERBEAMS AND BETABEAMS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th International Workshop on Neutrino Factories, Superbeams and Betabeams CY AUG 06-11, 2007 CL Okayama Univ, Okayama, JAPAN SP Japan Soc Promot Sci, Indian Dept Sci & Technol HO Okayama Univ DE RF cavity; muon ionization cooling; neutrino factory; muon collider; superconducting magnet AB We report recent progress on normal conducting RF cavity R&D for the US MUCOOL program and international Muon Ionization Cooling Experiment (MICE). C1 [Li, D.; Dickson, M.; Virostek, S.; Zisman, M.; Bross, A.; Moretti, A.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Qlan, Z.] Fermilab Natl Accelerator Lab, Batavia, IL USA. [Norem, J.] Argonne Natl Lab, Argonne, IL USA. [Rininiei, R.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA USA. [Torun, Y.] IIT, Chicago, IL USA. [SuninierS, D.] Univ Mississippi, University, MS 38677 USA. [Yang, S.] Univ Oxford, Dept Phys, Oxford OX1 2JD, England. RP Li, D (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. OI Torun, Yagmur/0000-0003-2336-6585 FU US Department of Energy [DE-AC02-05CH11231] FX Work supported by the Director, Office of Science, High Energy Physics, US Department of Energy under Contract No. DE-AC02-05CH11231. NR 8 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 978-0-7354-0500-4 J9 AIP CONF PROC PY 2008 VL 981 BP 299 EP + PG 2 WC Physics, Particles & Fields SC Physics GA BHJ54 UT WOS:000253569400083 ER PT S AU Palmer, RB Berg, JS Femow, RC Gallardo, JC Kirk, HG AF Palmer, Robert B. Berg, J. Scott Femow, Richard C. Gallardo, Juan C. Kirk, Harold G. BE Yasuda, O Ohmori, C Mondal, N TI Open cavity solutions to the rf in magnetic field problem SO NEUTRINO FACTORIES, SUPERBEAMS AND BETABEAMS SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 9th International Workshop on Neutrino Factories, Superbeams and Betabeams CY AUG 06-11, 2007 CL Okayama Univ, Okayama, JAPAN SP Japan Soc Promot Sci, Indian Dept Sci & Technol HO Okayama Univ DE Muon Collider; rf; breakdown AB It has been observed [1] that breakdown in an 805 MHz pill-box cavity occurs at much lower gradients as an external axial magnetic field is increased. This effect was not observed with on open iris cavity. It is proposed that this effect depends on the relative angles of the magnetic and maximum electric fields: parallel in the pill-box case; at an angle in the open iris case. If so, using an open iris structure with solenoid coils in the irises should perform even better. A lattice, using this principle, is presented, for use in 6D cooling for a Muon Collider. Experimental layouts to test this principle are proposed. C1 [Palmer, Robert B.; Berg, J. Scott; Femow, Richard C.; Gallardo, Juan C.; Kirk, Harold G.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Palmer, RB (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. RI Berg, Joseph/E-8371-2014; OI Berg, Joseph/0000-0002-5955-6973; Gallardo, Juan C/0000-0002-5191-3067 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 978-0-7354-0500-4 J9 AIP CONF PROC PY 2008 VL 981 BP 306 EP 308 PG 3 WC Physics, Particles & Fields SC Physics GA BHJ54 UT WOS:000253569400085 ER PT S AU Bishai, M Diwan, M Gallardo, J Garate, E Hershcovitch, A Johnson, B Kahn, S Kirk, H Rostoker, N Van Drie, A Weng, W AF Bishai, M. Diwan, M. Gallardo, J. Garate, E. Hershcovitch, A. Johnson, B. Kahn, S. Kirk, H. Rostoker, N. Van Drie, A. Weng, W. BE Yasuda, O Ohmori, C Mondal, N TI Plasma lens for a US based super neutrino beam SO NEUTRINO FACTORIES, SUPERBEAMS AND BETABEAMS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th International Workshop on Neutrino Factories, Superbeams and Betabeams CY AUG 06-11, 2007 CL Okayama Univ, Okayama, JAPAN SP Japan Soc Promot Sci, Indian Dept Sci & Technol HO Okayama Univ DE plasma lens; neutrino hom ID TRANSPORT AB The plasma lens concept is examined as an alternative to focusing horns and solenoids for a neutrino beam facility. The concept is based on a combined high-current lens/target configuration. Current is fed at an electrode located downstream from the beginning of the target where pion capturing is needed. The current is carried by plasma outside the target. A second plasma lens section, with an additional current feed, follows the target. The plasma is immersed in a solenoidal magnetic field to facilitate its current profile shaping to optimize pion capture. Simulations of the not yet fully optimized configuration yielded a 25% higher neutrino flux at a detector situated at 3 kin from the target than the horn system for the entire enegry spectrum and a factor of 2.47 higher flux for neutrinos with energy larger than 3 GeV A major advantage of plasma lenses is in background reduction. In anti-neutrino operation, neutrino background is reduced by a factor of close to 3 for the whole spectrum, and for and for energy larger than 3 GeV, neutrino background is reduced by a factor of 3.6. Plasma lens advantages are due to: larger axial currents, high signal purity: minimal neutrino background in anti-neutrino ram. Additionally the lens medium consists of plasma, consequently, particle absorption and scattering is negligible. Withstanding high mechanical and thermal stresses in a plasma is not an issue. C1 [Bishai, M.; Diwan, M.; Gallardo, J.; Hershcovitch, A.; Johnson, B.; Kirk, H.; Weng, W.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Kahn, S.] Muons Inc, Batavia, IL 60510 USA. [Garate, E.; Van Drie, A.] Univ Calif Irvine, Irvine, CA 62697 USA. RP Bishai, M (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. FU Brookhaven Science Associates, LLC [DEAC02-98CH1-886] FX This manuscript has been authored by Brookhaven Science Associates, LLC under Contract No. DEAC02-98CH1-886 with the US Department of Energy. The U.S. Government retains, and the publisher, by accepting the article for publication, acknowledges, a world-wide license to publish or reproduce the published form of this manuscript, or others to do so, for the U. S. Government purposes. 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 978-0-7354-0500-4 J9 AIP CONF PROC PY 2008 VL 981 BP 315 EP + PG 2 WC Physics, Particles & Fields SC Physics GA BHJ54 UT WOS:000253569400088 ER PT S AU Berg, JS AF Berg, J. Scott BE Yasuda, O Ohmori, C Mondal, N TI R&D topics for neutrino factory acceleration SO NEUTRINO FACTORIES, SUPERBEAMS AND BETABEAMS SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 9th International Workshop on Neutrino Factories, Superbeams and Betabeams CY AUG 06-11, 2007 CL Okayama Univ, Okayama, JAPAN SP Japan Soc Promot Sci, Indian Dept Sci & Technol HO Okayama Univ DE muon; acceleration; linac; recirculating linear accelerator; fixed field alternating gradient accelerator; neutrino factory AB The muons in a neutrino factory must be accelerated from the energy of the capture, phase rotation, and cooling systems (around 120 MeV kinetic energy) to the energy of the storage ring (around 25 GeV). This is done with a sequence of accelerators of different types: a linac, one or more recirculating linear accelerators, and finally one or more fixed field alternating gradient accelerators (FFAGs). I discuss the R&D that is needed to arrive at a complete system which we can have confidence will accelerate the beam and for which we can obtain a cost estimate. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Berg, JS (reprint author), Brookhaven Natl Lab, POB 5000, Upton, NY 11973 USA. RI Berg, Joseph/E-8371-2014 OI Berg, Joseph/0000-0002-5955-6973 NR 19 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 978-0-7354-0500-4 J9 AIP CONF PROC PY 2008 VL 981 BP 327 EP 329 PG 3 WC Physics, Particles & Fields SC Physics GA BHJ54 UT WOS:000253569400092 ER PT S AU Berg, JS AF Berg, J. Scott BE Yasuda, O Ohmori, C Mondal, N TI The EMMA lattice SO NEUTRINO FACTORIES, SUPERBEAMS AND BETABEAMS SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 9th International Workshop on Neutrino Factories, Superbeams and Betabeams CY AUG 06-11, 2007 CL Okayama Univ, Okayama, JAPAN SP Japan Soc Promot Sci, Indian Dept Sci & Technol HO Okayama Univ DE non-scaling fixed field alternating gradient accelerator AB EMMA is a 10 to 20 MeV electron ring designed to test our understanding of beam dynamics in a relativistic linear non-scaling fixed field alternating gradient accelerator (FFAG). I will give a basic review of the EMMA lattice parameters. Then I will review the different lattice configurations that we would like to have for EMMA. Finally, I will briefly discuss the process of commissioning each lattice configuration. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Berg, JS (reprint author), Brookhaven Natl Lab, POB 5000, Upton, NY 11973 USA. RI Berg, Joseph/E-8371-2014 OI Berg, Joseph/0000-0002-5955-6973 NR 7 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 978-0-7354-0500-4 J9 AIP CONF PROC PY 2008 VL 981 BP 330 EP 332 PG 3 WC Physics, Particles & Fields SC Physics GA BHJ54 UT WOS:000253569400093 ER PT S AU Green, MA AF Green, Mchael A. BE Yasuda, O Ohmori, C Mondal, N TI The effect of extending the length of the coupling coils in a muon ionization cooling channel SO NEUTRINO FACTORIES, SUPERBEAMS AND BETABEAMS SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 9th International Workshop on Neutrino Factories, Superbeams and Betabeams CY AUG 06-11, 2007 CL Okayama Univ, Okayama, JAPAN SP Japan Soc Promot Sci, Indian Dept Sci & Technol HO Okayama Univ DE muon ionization cooling; superconducting magnet. AB RF cavities are used to re-accelerate muons that have been cooled by absorbers that are in low beta regions of a muon ionization cooling channel. A superconducting coupling magnet (or magnets) are around or among the RF cavities of a muon ionization-cooling channel. The field from the magnet guides the muons so that they are kept within the iris of the RF cavities that are used to accelerate the muons. This report compares the use of a single short coupling magnet with an extended coupling magnet that has one or more superconducting coils as part of a muon-cooling channel of the same design as the muon ionization cooling experiment (MICE). Whether the superconducting magnet is short and thick or long and this affects the magnet stored energy and the peak field in the winding. The magnetic field distribution also affects is the muon beam optics in the cooling cell of a muon cooling channel. C1 Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Green, MA (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. NR 8 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 978-0-7354-0500-4 J9 AIP CONF PROC PY 2008 VL 981 BP 339 EP 344 PG 6 WC Physics, Particles & Fields SC Physics GA BHJ54 UT WOS:000253569400096 ER PT S AU Miyadera, H Jason, AJ Nagamine, K AF Miyadera, H. Jason, A. J. Nagamine, K. BE Yasuda, O Ohmori, C Mondal, N TI Muon project at Los Alamos SO NEUTRINO FACTORIES, SUPERBEAMS AND BETABEAMS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th International Workshop on Neutrino Factories, Superbeams and Betabeams CY AUG 06-11, 2007 CL Okayama Univ, Okayama, JAPAN SP Japan Soc Promot Sci, Indian Dept Sci & Technol HO Okayama Univ DE muon beam; mu SR; RFQ ID BEAM; GENERATION; FUTURE; PSI AB We are working on designing a next-generation muon facility for LANSCE at Los Alamos National Laboratory. The use of muon accelerators is the key feature to generate a muon micro beam of tunable energy. The muon micro beam will realize a beam luminocity of 10(9) mu(+)/cm(2)s which is 4 orders or more higher than present muon facilities. Some designs and results of simulations, especially a high-collection muon radio-frequency quadrupole, are described in this paper. C1 [Miyadera, H.; Jason, A. J.] Los Alamos Natl Lab, Accelerator & Beam Sci Grp, POB 1663, Los Alamos, NM 87545 USA. [Nagamine, K.] Univ Calif Riverside, Dept Phys & Astron, Riverside, CA 92521 USA. RP Miyadera, H (reprint author), Los Alamos Natl Lab, Accelerator & Beam Sci Grp, POB 1663, Los Alamos, NM 87545 USA. FU Accelerator & Beam Science Group at LANL; Muon Group at UC Riverside FX We acknowledge M. Okamura (BNL) for his remarkable suggestions to design a muon RFQ with large-energy acceptance. We appreciate T. Wangler, J. Billen and S. Kurennoy (LANL) for their helps on beam simulations. We would like to thank the Accelerator & Beam Science Group at LANL and Muon Group at UC Riverside for their strong supports on the current project. NR 13 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 978-0-7354-0500-4 J9 AIP CONF PROC PY 2008 VL 981 BP 360 EP + PG 2 WC Physics, Particles & Fields SC Physics GA BHJ54 UT WOS:000253569400102 ER PT B AU Hickner, MA Siegel, NP Chen, KS Hussey, DS Jacobson, DL Arif, M AF Hickner, M. A. Siegel, N. P. Chen, K. S. Hussey, D. S. Jacobson, D. L. Arif, M. BE Arif, M Downing, RG TI Exploring Liquid Water Distribution and Local Heating Effects in an Operating Proton Exchange Membrane Fuel Cell SO NEUTRON RADIOGRAPHY LA English DT Proceedings Paper CT 8th World Conference on Neutron Radiography CY OCT 16-19, 2006 CL Natl Inst Standards & Technol, Gaithersburg, MD HO Natl Inst Standards & Technol AB Neutron radiography experiments were performed on an operating proton exchange membrane fuel cell at the NIST Center for Neutron Research. The NIST Neutron Imaging Facility at BT-2 enables liquid water in standard fuel cell test hardware to be imaged with resolution of approximately 130 microns using an amorphous silicon flat panel detector. The majority of the experiments in this work were performed with the cell plane oriented normal to the beam to measure the "face-on" area distribution of liquid water across the 50 cm(2) surface of the cell. Effects of current density and temperature on the distribution and quantity of water were quantified for a range of conditions. A select number of experiments were performed with the cell face oriented parallel with the beam to image the water content profile of the operating fuel cell. These few experiments were performed to confirm that most of the effects observed were dominated by changes in the cathode water content. C1 [Hickner, M. A.; Siegel, N. P.; Chen, K. S.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Hickner, MA (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 4 TC 2 Z9 2 U1 0 U2 0 PU DESTECH PUBLICATIONS, INC PI LANCASTER PA 439 DUKE STREET, LANCASTER, PA 17602-4967 USA BN 978-1-932078-74-9 PY 2008 BP 480 EP 486 PG 7 WC Imaging Science & Photographic Technology SC Imaging Science & Photographic Technology GA BIL10 UT WOS:000260456500056 ER PT B AU Shingledecker, JP Santella, ML Wilson, KA AF Shingledecker, J. P. Santella, M. L. Wilson, K. A. GP TMS TI EVALUATION OF SPECIFICATION RANGES FOR CREEP STRENGTH ENHANCED FERRITIC STEELS SO NEW DEVELOPMENTS ON METALLURGY AND APPLICATIONS OF HIGH STRENGTH STEELS: BUENOS AIRES 2008, VOLS 1 AND 2, PROCEEDINGS, LA English DT Proceedings Paper CT Conference on New Developments on Metallurgy and Applications of High Strength Steels CY MAY 26-28, 2008 CL Buenos Aires, ARGENTINA SP Ternium, Tenaris, SAM, AIM, TMS, ABM AB Creep Strength Enhanced Ferritic Steels (CSEF) such as Gr. 91, 911, 92, and 122 require a fully martensitic structure for optimum properties, mainly good creep strength. However, broad chemical compositional ranges are specified for these steel grades which can strongly influence the microstructures obtained. In this study, we have produced chemical compositions within the specification ranges for these alloys, which intentionally cause the formation of ferrite or substantially alter the lower intercritical temperatures (A,) so as to affect the phase transformation behavior during tempering. Thermodynamic modeling, thermo-mechanical simulation, tensile testing, creep testing, and microstructural analysis were used to evaluate these materials. The results show the usefulness of thermodynamic calculations for setting rational chemical composition ranges for CSEF steels to control the critical temperatures, set heat-treatment temperature limits, and eliminate the formation of ferrite. C1 [Shingledecker, J. P.; Santella, M. L.] Oak Ridge Natl Lab, Oak Ridge, TN 37931 USA. RP Shingledecker, JP (reprint author), Oak Ridge Natl Lab, 1 Bethel Valley Rd, Oak Ridge, TN 37931 USA. EM shingledecjp@ornl.gov; santellaml@ornl.gov; kewilson@mtu.edu NR 11 TC 0 Z9 0 U1 0 U2 2 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA BN 978-0-87339-729-2 PY 2008 BP 309 EP 317 PG 9 WC Metallurgy & Metallurgical Engineering SC Metallurgy & Metallurgical Engineering GA BIY11 UT WOS:000263677000026 ER PT J AU Yuan, L Sumpter, BG Abboud, KA Castellano, RK AF Yuan, Ling Sumpter, Bobby G. Abboud, Khalil A. Castellano, Ronald K. TI Links between through-bond interactions and assembly structure in simple piperidones SO NEW JOURNAL OF CHEMISTRY LA English DT Article ID CORRELATED MOLECULAR CALCULATIONS; SIGMA-ACCEPTOR MOLECULES; MANY-ELECTRON SYSTEMS; GAUSSIAN-BASIS SETS; X-RAY-ANALYSIS; 6-MEMBERED RINGS; SOLID-STATE; CONFORMATIONAL-ANALYSIS; NITROGEN INVERSION; PHOTOELECTRON-SPECTROSCOPY AB 3,5-Disubstituted piperidones provide an opportunity to explore donor-acceptor through-bond interactions in the context of molecular and supramolecular structure. The crystal structure of cis-3,5-dibenzyl-1-pheylpiperidin-4-one 3 is disordered and the lattice accommodates a similar to 3 : 1 ratio of the N-Ph equatorial (3-eq) and N-Ph axial (3-ax) epimers, based on refined values of occupancy factors. The fortuitous result allows a side-by-side comparison of the two configurations with respect to their donor-acceptor through-bond interactions. The energy difference between 3-ax and 3-eq (Delta E(ax)-eq) has been evaluated in the gas phase using extensive first principles calculations, and for many levels of theory this difference parallels the experimentally-observed configurational ratio in the solid state (where the epimers share nearly identical packing environments). The calculations further show a difference in the through-bond stabilization for 3-ax and 3-eq, with larger contributions for 3-ax. Natural bond order (NBO) analysis quantifies the delocalization of the donor nitrogen lone pair into the adjacent carbon-carbon bonds and carbonyl acceptor for the 3-ax epimer. The work concludes that molecular-level structural perturbations that arise from or otherwise influence through-bond donor-acceptor interactions have consequences on solid-state and supramolecular assembly structure. C1 [Yuan, Ling; Abboud, Khalil A.; Castellano, Ronald K.] Univ Florida, Dept Chem, Gainesville, FL 32611 USA. [Sumpter, Bobby G.] Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA. [Sumpter, Bobby G.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA. RP Castellano, RK (reprint author), Univ Florida, Dept Chem, POB 117200, Gainesville, FL 32611 USA. EM castellano@chem.ufl.edu RI Castellano, Ronald/C-5082-2012; Sumpter, Bobby/C-9459-2013; OI Sumpter, Bobby/0000-0001-6341-0355; Castellano, Ronald/0000-0003-4322-9932 FU National Science Foundation [CHE-0548003]; University of Florida; Center for Nanophase Materials Sciences (CNMS) [CNMS2004-016, CNMS2007-029]; Division of Scientific User Facilities; US Department of Energy FX This work was financially supported by the National Science Foundation CAREER program (CHE-0548003) and the University of Florida. B. G. S. thanks the Center for Nanophase Materials Sciences (CNMS), sponsored by the Division of Scientific User Facilities, US Department of Energy. The extensive computations were performed using the resources of the National Center for Computational Sciences at Oak Ridge National Laboratories (ORNL). R. K. C. is grateful to the CNMS User Program (CNMS2004-016 and CNMS2007-029) for resources. K. A. A. thanks the National Science Foundation and University of Florida for funding the X-ray crystallography equipment. We are additionally grateful to Juergen Koeller for his assistance with processing the X-ray data, Dr Ion Ghiviriga for help obtaining the 1H NMR spectra of 2 and 3, and Dr Edo Apra for useful discussions and help with the CCSD(T) calculations. NR 80 TC 6 Z9 6 U1 1 U2 10 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1144-0546 J9 NEW J CHEM JI New J. Chem. PY 2008 VL 32 IS 11 BP 1924 EP 1934 DI 10.1039/b808818g PG 11 WC Chemistry, Multidisciplinary SC Chemistry GA 384LJ UT WOS:000261746000014 ER PT J AU Hardacre, C Holbrey, JD Mullan, CL Nieuwenhuyzen, M Reichert, WM Seddon, KR Teat, SJ AF Hardacre, Christopher Holbrey, John D. Mullan, Claire L. Nieuwenhuyzen, Mark Reichert, W. Matthew Seddon, Kenneth R. Teat, Simon J. TI Ionic liquid characteristics of 1-alkyl-n-cyanopyridinium and 1-alkyl-n-(trifluoromethyl) pyridinium salts SO NEW JOURNAL OF CHEMISTRY LA English DT Article ID AROMATIC-HYDROCARBONS; COUPLING REACTIONS; ALUMINUM-CHLORIDE; MELTING-POINTS; PHASE-BEHAVIOR; MIXTURES; VISCOSITY; IODIDE; CRYSTALLINE; ANIONS AB 1-Alkyl-n-cyanopyridinium and 1-alkyl-n-(trifluoromethyl) pyridinium salts have been synthesised and characterised in order to compare the effects of different electron-withdrawing functional groups on their ability to form ionic liquids. The presence of the electron-withdrawing nitrile or trifluoromethyl substituent on the pyridinium ring leads to salts with higher melting points than with the corresponding 1-alkylpyridinium or 1-alkylpicolinium cations. Solid-state structures were determined by single crystal X-ray crystallography for seven salts; 1-methyl-4-cyanopyridinium methylsulfate, and 1-methyl-3-cyanopyridinium, 1-methyl-4-cyanopyridinium, 1-ethyl-2-cyanopyridinium, 1-ethyl-3-cyanopyridinium, 1-ethyl-4-cyanopyridinium and 1-ethyl-4-(trifluormethyl) pyridinium bis{(trifluoromethyl) sulfonyl} imide, and show the effects of ring-substitution position on hydrogen-bonding in the solid-state and on melting points. C1 [Hardacre, Christopher; Holbrey, John D.; Mullan, Claire L.; Seddon, Kenneth R.] Queens Univ Belfast, QUILL Res Ctr, Belfast BT9 5AG, Antrim, North Ireland. [Nieuwenhuyzen, Mark] Queens Univ Belfast, Dept Chem & Chem Engn, Belfast BT9 5AG, Antrim, North Ireland. [Reichert, W. Matthew] USN, Res Acad, Dept Chem, Annapolis, MD 21402 USA. [Teat, Simon J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Holbrey, JD (reprint author), Queens Univ Belfast, QUILL Res Ctr, Belfast BT9 5AG, Antrim, North Ireland. EM j.holbrey@qub.ac.uk OI Holbrey, John/0000-0002-3084-8438; Hardacre, Christopher/0000-0001-7256-6765 FU BP; QUILL; EPSRC [EP/D029538/1]; U. S. Department of Energy [DE-AC0205CH11231]; U. S. Air Force Office of Scientific Research; U. S. Naval Academy FX The authors gratefully acknowledge BP, QUILL and the EPSRC (Portfolio Partnership Scheme, Grant EP/D029538/1) for funding. The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences of the U. S. Department of Energy under contract no. DE-AC0205CH11231. W. M. R would like to acknowledge the support of Paul Trulove and Hugh De Long. Portions of this work were funded by the U. S. Air Force Office of Scientific Research and the U. S. Naval Academy. Any opinions,findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the U. S. Air Force or Navy. NR 52 TC 15 Z9 15 U1 1 U2 12 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1144-0546 J9 NEW J CHEM JI New J. Chem. PY 2008 VL 32 IS 11 BP 1953 EP 1967 DI 10.1039/b805063e PG 15 WC Chemistry, Multidisciplinary SC Chemistry GA 384LJ UT WOS:000261746000017 ER PT J AU Okumoto, S Takanaga, H Frommer, WB AF Okumoto, Sakiko Takanaga, Hitomi Frommer, Wolf B. TI Quantitative imaging for discovery and assembly of the metabo-regulome SO NEW PHYTOLOGIST LA English DT Review DE fluorescence resonance energy transfer (FRET); fluxomics; metabolomics; metabolic signaling; metabolic pathways; sugar signaling ID RESONANCE ENERGY-TRANSFER; GENETICALLY ENCODED INDICATORS; GREEN FLUORESCENT PROTEIN; LIVING CELLS; PLASMA-MEMBRANE; INOSITOL 1,4,5-TRISPHOSPHATE; SPATIOTEMPORAL DYNAMICS; ENDOPLASMIC-RETICULUM; FRET-SENSOR; GUARD-CELLS AB Little is known about regulatory networks that control metabolic flux in plant cells. Detailed understanding of regulation is crucial for synthetic biology. The difficulty of measuring metabolites with cellular and subcellular precision is a major roadblock. New tools have been developed for monitoring extracellular, cytosolic, organellar and vacuolar ion and metabolite concentrations with a time resolution of milliseconds to hours. Genetically encoded sensors allow quantitative measurement of steady-state concentrations of ions, signaling molecules and metabolites and their respective changes over time. Fluorescence resonance energy transfer (FRET) sensors exploit conformational changes in polypeptides as a proxy for analyte concentrations. Subtle effects of analyte binding on the conformation of the recognition element are translated into a FRET change between two fused green fluorescent protein (GFP) variants, enabling simple monitoring of analyte concentrations using fluorimetry or fluorescence microscopy. Fluorimetry provides information averaged over cell populations, while microscopy detects differences between cells or populations of cells. The genetically encoded sensors can be targeted to subcellular compartments or the cell surface. Confocal microscopy ultimately permits observation of gradients or local differences within a compartment. The FRET assays can be adapted to high-throughput analysis to screen mutant populations in order to systematically identify signaling networks that control individual steps in metabolic flux. C1 [Takanaga, Hitomi; Frommer, Wolf B.] Carnegie Inst Sci, Dept Plant Biol, Stanford, CA 94305 USA. [Okumoto, Sakiko] Virginia Polytech Inst & State Univ, Dept Plant Pathol Physiol & Weed Sci, Blacksburg, VA 24061 USA. [Frommer, Wolf B.] Joint Bioenergy Inst, Feedstocks Div, Oakland, CA 94608 USA. RP Frommer, WB (reprint author), Carnegie Inst Sci, Dept Plant Biol, 290 Panama St, Stanford, CA 94305 USA. EM wfrommer@stanford.edu RI Frommer, Wolf B/A-8256-2008 FU Department of Energy [DE-FG02-04ER15542]; National Institute for Health [1RO1DK079109-01] FX We would like to dedicate this review to Ulf-Ingo Flugge, University of Koln, Widmar Tanner, University of Regensburg and Winslow Briggs, former Director of the Department of Plant Biology, Carnegie Institution for Science, Stanford, on the occasion of their 60th, 70th, and 80th birthdays this year, respectively. This work was made possible by grants from the Department of Energy (DE-FG02-04ER15542) and the National Institute for Health (NIDDK; 1RO1DK079109-01). NR 150 TC 35 Z9 35 U1 2 U2 13 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0028-646X J9 NEW PHYTOL JI New Phytol. PY 2008 VL 180 IS 2 BP 271 EP 295 DI 10.1111/j.1469-8137.2008.02611.x PG 25 WC Plant Sciences SC Plant Sciences GA 352VU UT WOS:000259526300006 PM 19138219 ER PT J AU Labbe, J Zhang, X Yin, T Schmutz, J Grimwood, J Martin, F Tuskan, GA Le Tacon, F AF Labbe, J. Zhang, X. Yin, T. Schmutz, J. Grimwood, J. Martin, F. Tuskan, G. A. Le Tacon, F. TI A genetic linkage map for the ectomycorrhizal fungus Laccaria bicolor and its alignment to the whole-genome sequence assemblies SO NEW PHYTOLOGIST LA English DT Article DE genetic map; gene positioning; Laccaria bicolor; sequence assemblies ID BASIDIOMYCETE PLEUROTUS-OSTREATUS; FRAGMENT-LENGTH-POLYMORPHISMS; MATING-TYPE; CRYPTOCOCCUS-NEOFORMANS; AGARICUS-BISPORUS; INTERGENIC SPACER; RAPD MARKERS; DNA; IDENTIFICATION; SEGREGATION AB A genetic linkage map for the ectomycorrhizal basidiomycete Laccaria bicolor was constructed from 45 sib-homokaryotic haploid mycelial lines derived from the parental S238N strain progeny. For map construction, 294 simple sequence repeats (SSRs), single-nucleotide polymorphisms (SNPs), amplified fragment length polymorphisms (AFLPs) and random amplified polymorphic DNA (RAPD) markers were employed to identify and assay loci that segregated in backcross configuration. Using SNP, RAPD and SSR sequences, the L. bicolor whole-genome sequence (WGS) assemblies were aligned onto the linkage groups. A total of 37.36 Mbp of the assembled sequences was aligned to 13 linkage groups. Most mapped genetic markers used in alignment were colinear with the sequence assemblies, indicating that both the genetic map and sequence assemblies achieved high fidelity. The resulting matrix of recombination rates between all pairs of loci was used to construct an integrated linkage map using JoinMap. The final map consisted of 13 linkage groups spanning 812 centiMorgans (cM) at an average distance of 2.76 cM between markers (range 1.9-17 cM). The WGS and the present linkage map represent an initial step towards the identification and cloning of quantitative trait loci associated with development and functioning of the ectomycorrhizal symbiosis. C1 [Labbe, J.; Martin, F.; Le Tacon, F.] Nancy Univ, INRA, UMR 1136, F-54280 Champenoux, France. [Zhang, X.; Yin, T.; Tuskan, G. A.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. [Zhang, X.; Yin, T.; Tuskan, G. A.] Joint Genome Inst, Walnut Creek, CA 94250 USA. [Schmutz, J.; Grimwood, J.] Stanford Univ, Sch Med, Stanford Human Genome Ctr, Dept Genet, Palo Alto, CA 94304 USA. RP Labbe, J (reprint author), Nancy Univ, INRA, UMR 1136, F-54280 Champenoux, France. EM labbe@nancy.inra.fr RI Tuskan, Gerald/A-6225-2011; Labbe, Jessy/G-9532-2011 OI Tuskan, Gerald/0000-0003-0106-1289; Labbe, Jessy/0000-0003-0368-2054 FU Lorraine Region; INRA; European Commission Network of Excellence EVOLTREE; Bioenergy Center Program; US Department of Energy; US Department of Energy [DE-AC05-00OR22725] FX This project was supported by the Lorraine Region and INRA through a PhD. scholarship to JL. Funds were also provided by INRA, the European Commission Network of Excellence EVOLTREE, the Bioenergy Center Program at ORNL and the US Department of Energy. Oak Ridge National Laboratory (ORNL) is managed by UT-Battelle, LLC for the US Department of Energy under contract no. DE-AC05-00OR22725. We would like to thank Christine Delaruelle, Veronique Jorge, Brett Mommer, Lee Gunter, Helene Niculita-Hirzel and Joseph Armento for their assistance and helpful discussions. We also thank Pierre-Emmanuel Courty and Julien Gibon for the permission to use LbH2 and lcc6 sequences. We thank the Joint Genome Institute and the Stanford Human Genome Sequencing Center for making the L. bicolor genome assemblies available before publication. NR 44 TC 20 Z9 26 U1 4 U2 18 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0028-646X J9 NEW PHYTOL JI New Phytol. PY 2008 VL 180 IS 2 BP 316 EP 328 DI 10.1111/j.1469-8137.2008.02614.x PG 13 WC Plant Sciences SC Plant Sciences GA 352VU UT WOS:000259526300009 PM 18783356 ER PT J AU Quesada, T Li, Z Dervinis, C Li, Y Bocock, PN Tuskan, GA Casella, G Davis, JM Kirst, M AF Quesada, Tania Li, Zhen Dervinis, Christopher Li, Yao Bocock, Philip N. Tuskan, Gerald A. Casella, George Davis, John. M. Kirst, Matias TI Comparative analysis of the transcriptomes of Populus trichocarpa and Arabidopsis thaliana suggests extensive evolution of gene expression regulation in angiosperms SO NEW PHYTOLOGIST LA English DT Article DE Arabidopsis thaliana; comparative genomics; evolution; Populus trichocarpa; transcriptome; woody ID WOOD FORMATION; PINUS-RADIATA; HYBRID ASPEN; GENOME; POPLAR; TREES; ORTHOLOGS; MERISTEM; DOMAINS; XYLEM AB Sequencing of the Populus trichocarpa genome creates an opportunity to describe the transcriptome of a woody perennial species and establish an atlas of gene expression. A comparison with the transcriptomes of other species can also define genes that are conserved or diverging in plant species. Here, the transcriptome in vegetative organs of the P. trichocarpa reference genotype Nisqually-1 was characterized. A comparison with Arabidopsis thaliana orthologs was used to distinguish gene functional categories that may be evolving differently in a woody perennial and an annual herbaceous species. A core set of genes expressed in common among vegetative organs was detected, as well as organ-specific genes. Statistical tests identified chromatin domains, where adjacent genes were expressed more frequently than expected by chance. Extensive divergence was detected in the expression patterns of A. thaliana and P. trichocarpa orthologs, but transcription of a small number of genes appeared to have remained conserved in the two species. Despite separation of lineages for over 100 million yr, these results suggest that selection has limited transcriptional divergence of genes associated with some essential functions in A. thaliana and P. trichocarpa. However, extensive remodeling of transcriptional networks indicates that expression regulation may be a key determinant of plant diversity. C1 [Quesada, Tania; Bocock, Philip N.; Davis, John. M.; Kirst, Matias] Univ Florida, Plant Mol & Cellular Biol Grad Program, Gainesville, FL 32611 USA. [Quesada, Tania; Dervinis, Christopher; Bocock, Philip N.; Davis, John. M.; Kirst, Matias] Univ Florida, Sch Forest Resources & Conservat, Gainesville, FL 32611 USA. [Li, Zhen; Li, Yao; Casella, George] Univ Florida, Dept Stat, Gainesville, FL 32611 USA. [Tuskan, Gerald A.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. [Tuskan, Gerald A.] Univ Tennessee, Dept Plant Sci, Knoxville, TN 37996 USA. [Casella, George; Davis, John. M.; Kirst, Matias] Univ Florida, Genet Inst, Gainesville, FL 32610 USA. RP Kirst, M (reprint author), Univ Florida, Plant Mol & Cellular Biol Grad Program, POB 110690, Gainesville, FL 32611 USA. EM mkirst@ufl.edu RI Tuskan, Gerald/A-6225-2011 OI Tuskan, Gerald/0000-0003-0106-1289 FU Department of Energy; Office of Science; Office of Biological and Environmental Research [DE-AC05-00OR22725]; [DE-FG02-05ER64114] FX This work was supported by a grant from the Department of Energy, Office of Science, Office of Biological and Environmental Research, Grant Award No. DE-AC05-00OR22725 (to JD) and Grant Award No. DE-FG02-05ER64114 (to MK). We thank Ron Sederoff for useful discussions and for reviewing the manuscript. NR 44 TC 28 Z9 28 U1 1 U2 9 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0028-646X J9 NEW PHYTOL JI New Phytol. PY 2008 VL 180 IS 2 BP 408 EP 420 DI 10.1111/j.1469-8137.2008.02586.x PG 13 WC Plant Sciences SC Plant Sciences GA 352VU UT WOS:000259526300015 PM 18694447 ER PT J AU Martin, F Gianinazzi-Pearson, V Hijri, M Lammers, P Requena, N Sanders, IR Shachar-Hill, Y Shapiro, H Tuskan, GA Young, JPW AF Martin, F. Gianinazzi-Pearson, V. Hijri, M. Lammers, P. Requena, N. Sanders, I. R. Shachar-Hill, Y. Shapiro, H. Tuskan, G. A. Young, J. P. W. TI The long hard road to a completed Glomus intraradices genome SO NEW PHYTOLOGIST LA English DT Editorial Material DE arbuscular mycorrhizal fungi; clustering; expressed sequence tag (EST); genome; Glomus intraradices; Joint Genome Institute (JGI); sequencing; symbiosis ID ARBUSCULAR MYCORRHIZAL FUNGI; SYMBIOSIS C1 [Martin, F.] Nancy Univ Interact Arbres Microorganismes, INRA, UMR1136, IFR10,Ctr Nancy, F-54280 Champenoux, France. [Gianinazzi-Pearson, V.] Burgundy Univ Plante Microbe Environm, UMR INRA 1088, CNRS 5184, INRA CMSE, F-21065 Dijon, France. [Hijri, M.] Univ Montreal, Dept Sci Biol, Inst Rech Biol Vegetale, Montreal, PQ H1X 2B2, Canada. [Lammers, P.] New Mexico State Univ, Dept Chem & Biochem, Las Cruces, NM 88003 USA. [Requena, N.] Univ Karlsruhe, Inst Appl Biociences, Heisenberg Grp Plant Fungal Interact, D-76187 Karlsruhe, Germany. [Sanders, I. R.] Univ Lausanne, Inst Ecol, CH-1015 Lausanne, Switzerland. [Shachar-Hill, Y.] Michigan State Univ, Dept Plant Biol, E Lansing, MI 48824 USA. [Shapiro, H.] Joint Genome Inst, Walnut Creek, CA 94598 USA. [Tuskan, G. A.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Young, J. P. W.] Univ York, Dept Biol, York YO10 5YW, N Yorkshire, England. RP Martin, F (reprint author), Nancy Univ Interact Arbres Microorganismes, INRA, UMR1136, IFR10,Ctr Nancy, F-54280 Champenoux, France. EM fmartin@nancy.inra.fr RI Tuskan, Gerald/A-6225-2011; Shachar-Hill, Yair/B-6165-2013; Young, Peter/C-1446-2012; Requena Sanchez, Natalia/I-4738-2016; OI Tuskan, Gerald/0000-0003-0106-1289; Shachar-Hill, Yair/0000-0001-8793-5084; Young, Peter/0000-0001-5259-4830; Requena Sanchez, Natalia/0000-0001-5406-0015; Hijri, Mohamed/0000-0001-6112-8372 NR 12 TC 61 Z9 63 U1 1 U2 25 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0028-646X EI 1469-8137 J9 NEW PHYTOL JI New Phytol. PY 2008 VL 180 IS 4 BP 747 EP 750 DI 10.1111/j.1469-8137.2008.02671.x PG 4 WC Plant Sciences SC Plant Sciences GA 369XP UT WOS:000260727500005 PM 19138232 ER PT J AU Iversen, CM Ledford, J Norby, RJ AF Iversen, Colleen M. Ledford, Joanne Norby, Richard J. TI CO(2) enrichment increases carbon and nitrogen input from fine roots in a deciduous forest SO NEW PHYTOLOGIST LA English DT Article DE fine roots; root biomass; root diameter; root mortality; root N content; root turnover; soil C storage ID ELEVATED ATMOSPHERIC CO2; SOIL CARBON; HARDWOOD FOREST; GLOBAL PATTERNS; ORGANIC-MATTER; PINE FOREST; LIFE-SPAN; TURNOVER; MINIRHIZOTRON; ECOSYSTEM AB Greater fine-root production under elevated [CO(2)] may increase the input of carbon (C) and nitrogen (N) to the soil profile because fine root populations turn over quickly in forested ecosystems. Here, the effect of elevated [CO(2)] was assessed on root biomass and N inputs at several soil depths by combining a long-term minirhizotron dataset with continuous, root-specific measurements of root mass and [N]. The experiment was conducted in a CO(2)-enriched sweetgum (Liquidambar styraciflua) plantation. CO(2) enrichment had no effect on root tissue density or [N] within a given diameter class. Root biomass production and standing crop were doubled under elevated [CO(2)]. Though fine-root turnover declined under elevated [CO(2)], fine-root mortality was also nearly doubled under CO(2) enrichment. Over 9 yr, root mortality resulted in 681 g m(-2) of extra C and 9 g m(-2) of extra N input to the soil system under elevated [CO(2)]. At least half of these inputs were below 30 cm soil depth. Increased C and N input to the soil under CO(2) enrichment, especially below 30 cm depth, might alter soil C storage and N mineralization. Future research should focus on quantifying root decomposition dynamics and C and N mineralization deeper in the soil. C1 [Iversen, Colleen M.] Univ Tennessee, Dept Ecol & Evolutionary Biol, Knoxville, TN 37996 USA. [Ledford, Joanne; Norby, Richard J.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. RP Iversen, CM (reprint author), Univ Tennessee, Dept Ecol & Evolutionary Biol, Knoxville, TN 37996 USA. RI Norby, Richard/C-1773-2012; Iversen, Colleen/B-8983-2012 OI Norby, Richard/0000-0002-0238-9828; NR 74 TC 83 Z9 84 U1 4 U2 74 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0028-646X J9 NEW PHYTOL JI New Phytol. PY 2008 VL 179 IS 3 BP 837 EP 847 DI 10.1111/j.1469-8137.2008.02516.x PG 11 WC Plant Sciences SC Plant Sciences GA 327CA UT WOS:000257706000029 PM 18537885 ER PT J AU Warren, JM Brooks, JR Meinzer, FC Eberhart, JL AF Warren, Jeffrey M. Brooks, J. Renee Meinzer, Frederick C. Eberhart, Joyce L. TI Hydraulic redistribution of water from Pinus ponderosa trees to seedlings: evidence for an ectomycorrhizal pathway SO NEW PHYTOLOGIST LA English DT Article DE common mycorrhizal network (CMN); ectomycorrhizal fungi; hydraulic lift; ponderosa pine (Pinus ponderosa); water transport ID ARBUSCULAR MYCORRHIZAL SYMBIOSIS; NORTHWEST CONIFEROUS FORESTS; SOIL-WATER; DOUGLAS-FIR; TRANSPORT; PLANTS; LIFT; ROOTS; TRANSLOCATION; PATTERNS AB While there is strong evidence for hydraulic redistribution (HR) of soil water by trees, it is not known if common mycorrhizal networks (CMN) can facilitate HR from mature trees to seedlings under field conditions. Ponderosa pine (Pinus ponderosa) seedlings were planted into root-excluding 61-mu m mesh barrier chambers buried in an old-growth pine forest. After 2 yr, several mature trees were cut and water enriched in D2O and acid fuchsin dye was applied to the stumps. Fine roots and mycorrhizal root tips of source trees became heavily dyed, indicating reverse sap flow in root xylem transported water from stems throughout root systems to the root hyphal mantle that interfaces with CMN. Within 3 d, D2O was found in mesh-chamber seedling foliage > 1 m from source trees; after 3 wk, eight of 10 mesh-chamber seedling stem samples were significantly enriched above background levels. Average mesh-chamber enrichment was 1.8x greater than that for two seedlings for which the connections to CMN were broken by trenching before D2O application. Even small amounts of water provided to mycorrhizas by HR may maintain hyphal viability and facilitate nutrient uptake under drying conditions, which may provide an advantage to seedlings hydraulically linked by CMN to large trees. C1 [Warren, Jeffrey M.; Meinzer, Frederick C.] US Forest Serv, Pacific NW Res Stn, Corvallis, OR 97331 USA. [Warren, Jeffrey M.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. [Brooks, J. Renee] US EPA, Natl Hlth & Environm Effects Res Lab, Western Ecol Div, Corvallis, OR 97333 USA. [Eberhart, Joyce L.] Oregon State Univ, Dept Forest Sci, Corvallis, OR 97331 USA. RP Warren, JM (reprint author), US Forest Serv, Pacific NW Res Stn, Corvallis, OR 97331 USA. EM warrenjm@ornl.gov RI Warren, Jeffrey/B-9375-2012; Meinzer, Frederick/C-3496-2012; OI Warren, Jeffrey/0000-0002-0680-4697; Brooks, Renee/0000-0002-5008-9774 NR 47 TC 55 Z9 60 U1 6 U2 57 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 0028-646X J9 NEW PHYTOL JI New Phytol. PY 2008 VL 178 IS 2 BP 382 EP 394 DI 10.1111/j.1469-8137.2008.02377.x PG 13 WC Plant Sciences SC Plant Sciences GA 279WE UT WOS:000254385100017 PM 18298435 ER PT J AU McDowell, N Pockman, WT Allen, CD Breshears, DD Cobb, N Kolb, T Plaut, J Sperry, J West, A Williams, DG Yepez, EA AF McDowell, Nate Pockman, William T. Allen, Craig D. Breshears, David D. Cobb, Neil Kolb, Thomas Plaut, Jennifer Sperry, John West, Adam Williams, David G. Yepez, Enrico A. TI Mechanisms of plant survival and mortality during drought: why do some plants survive while others succumb to drought? SO NEW PHYTOLOGIST LA English DT Review DE climate; die-off; hydraulics; vegetation mortality; water relations ID MOUNTAIN PINE-BEETLE; TEMPERATE DECIDUOUS ANGIOSPERMS; UNITED-STATES FORESTS; GLOBAL CLIMATE-CHANGE; NORTHERN NEW-MEXICO; SAP ABSCISIC-ACID; DOUGLAS-FIR TREES; PONDEROSA PINE; STOMATAL CONDUCTANCE; WATER RELATIONS AB Severe droughts have been associated with regional-scale forest mortality worldwide. Climate change is expected to exacerbate regional mortality events; however, prediction remains difficult because the physiological mechanisms underlying drought survival and mortality are poorly understood. We developed a hydraulically based theory considering carbon balance and insect resistance that allowed development and examination of hypotheses regarding survival and mortality. Multiple mechanisms may cause mortality during drought. A common mechanism for plants with isohydric regulation of water status results from avoidance of drought-induced hydraulic failure via stomatal closure, resulting in carbon starvation and a cascade of downstream effects such as reduced resistance to biotic agents. Mortality by hydraulic failure per se may occur for isohydric seedlings or trees near their maximum height. Although anisohydric plants are relatively drought-tolerant, they are predisposed to hydraulic failure because they operate with narrower hydraulic safety margins during drought. Elevated temperatures should exacerbate carbon starvation and hydraulic failure. Biotic agents may amplify and be amplified by drought-induced plant stress. Wet multidecadal climate oscillations may increase plant susceptibility to drought-induced mortality by stimulating shifts in hydraulic architecture, effectively predisposing plants to water stress. Climate warming and increased frequency of extreme events will probably cause increased regional mortality episodes. Isohydric and anisohydric water potential regulation may partition species between survival and mortality, and, as such, incorporating this hydraulic framework may be effective for modeling plant survival and mortality under future climate conditions. C1 [McDowell, Nate] Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA. [Pockman, William T.; Plaut, Jennifer] 1 Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA. [Allen, Craig D.] US Geol Survey, Jemez Mt Field Stn, Los Alamos, NM 87544 USA. [Breshears, David D.] Univ Arizona, Sch Nat Resources, Inst Study Planet Earth, Tucson, AZ 85721 USA. [Breshears, David D.] Univ Arizona, Dept Ecol & Evolutionary Biol, Tucson, AZ 85721 USA. [Breshears, David D.] Univ Arizona, Dept Ecol & Evolutionary Biol, Tucson, AZ 85721 USA. [Cobb, Neil] No Arizona Univ, Merriam Powell Ctr Environm Res, Flagstaff, AZ 86011 USA. [Kolb, Thomas] No Arizona Univ, Sch Forestry, Flagstaff, AZ 86011 USA. [Plaut, Jennifer] Univ Utah, Dept Biol, Salt Lake City, UT 84112 USA. [West, Adam] Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA. [West, Adam] Univ Cape Town, Dept Bot, ZA-7700 Rondebosch, South Africa. [Williams, David G.] Univ Wyoming, Dept Renewable Resources, Laramie, WY 82071 USA. [Yepez, Enrico A.] Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA. RP McDowell, N (reprint author), Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA. EM mcdowell@lanl.gov RI West, Adam/E-8740-2010; Williams, David/A-6407-2014; Yepez, Enrico/C-2802-2014; Pockman, William/D-4086-2014; Breshears, David/B-9318-2009; Yepez, Enrico/C-6901-2008 OI West, Adam/0000-0002-9352-9282; Williams, David/0000-0003-3627-5260; Pockman, William/0000-0002-3286-0457; Breshears, David/0000-0001-6601-0058; Yepez, Enrico/0000-0003-4746-573X NR 252 TC 1013 Z9 1052 U1 102 U2 827 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0028-646X J9 NEW PHYTOL JI New Phytol. PY 2008 VL 178 IS 4 BP 719 EP 739 DI 10.1111/j.1469-8137.2008.02436.x PG 21 WC Plant Sciences SC Plant Sciences GA 298YF UT WOS:000255722300005 PM 18422905 ER PT B AU Lattanzio, JC Dearborn, DSP Eggleton, PP AF Lattanzio, John C. Dearborn, Davis S. P. Eggleton, Peter P. BE Guandalini, R Palmerini, S Busso, M TI News on deep mixing SO NINTH TORINO WORKSHOP ON EVOLUTION AND NUCLEOSYNTHESIS IN AGB STARS AND THE SECOND PERUGIA WORKSHOP ON NUCLEAR ASTROPHYSICS LA English DT Proceedings Paper CT 9th Torino Workshop on Evolution and Nucleosynthesis in AGB Stars/2nd Perugia Workshop on Nuclear Astrophysics CY OCT 21-27, 2007 CL Perugia, ITALY SP Univ Perugia, INFN, INAF, Univ Granada DE mixing; giant stars, abundances ID GIANT BRANCH; RGB-STARS AB We briefly summarize the abundant observational evidence for the need of a "deep mixing" mechanism in first-ascent red-giant stars, and probably in AGB stars as well. By the term "deep mixing" we mean some mixing mechanism which operates in the radiative zone below the convective envelope, and which transports material from the convective region to hotter regions, near the top of the hydrogen shell, where nuclear burning may take place. We then discuss a recent discovery of deep-mixing caused by the burning of 3 He following first dredge-up in low-mass stars. Ibis is expected to be a thermohaline process and preliminary calculations show that it has many of the properties required to explain the observations. C1 [Lattanzio, John C.] Monash Univ, Ctr Stellar & Planetary Astrophys, Clayton, Vic 3168, Australia. [Dearborn, Davis S. P.; Eggleton, Peter P.] Lawrence Livermore Natl Lab, Livermore, CA USA. RP Lattanzio, JC (reprint author), Monash Univ, Ctr Stellar & Planetary Astrophys, Clayton, Vic 3168, Australia. FU U.S. Department of Energy; National Nuclear Security Administration; University of California; Lawrence Livermore National Laboratory [W-7405-Eng-48]; Australian Research Council FX This study has been carried out under the auspices of the U.S. Department of Energy, National Nuclear Security Administration, by the University of California, Lawrence Livermore National Laboratory, under contract No. W-7405-Eng-48. JCL was partially supported by the Australian Research Council. We are indebted to R. Palasek for assistance with the code. JCL also thanks the organizers of the Torino workshop for helping with practical details enabling his attendance. A special thanks to Sarah for all her help, and to Alessandro for transport to and from Roma. 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 BN 978-0-7354-0520-2 PY 2008 BP 279 EP + PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BHP48 UT WOS:000255181400036 ER PT B AU van Hest, MFAM Miedaner, A Curtis, CJ Leisch, J Hersh, P Steirer, K Pasquarelli, R Nekuda, JA OHayre, RP Ginley, DS AF van Hest, Maikel F. A. M. Miedaner, Alex Curtis, Calvin J. Leisch, Jennifer Hersh, Peter Steirer, Ken Pasquarelli, Robert Nekuda, Jennifer A. OHayre, Ryan P. Ginley, David S. BE SchulzeHagenest, D TI Use of Direct Write Methods for Reduced Cost Photovoltaics SO NIP24/DIGITAL FABRICATION 2008: 24TH INTERNATIONAL CONFERENCE ON DIGITAL PRINTING TECHNOLOGIES, TECHNICAL PROGRAM AND PROCEEDINGS LA English DT Proceedings Paper CT 24th Internationational Conference on Digital Printing Technologies/Digital Fabrication 2008 CY SEP 06-11, 2008 CL Pittsburgh, PA SP Soc Imaging Sci & Technol, Imaging Soc Japan AB Photovoltaics are becoming an increasing part of the energy supply mix, however to have a really significant impact they must become cost competitive with more conventional energy sources. Direct write methods could help toward this significant cost reduction. We are investigating solution precursors and ink based atmospheric deposition approaches to a variety of solar cell materials. The first application we are studying is inkjet printing of contacts for Si, CIGS and organic photovoltaics. We have developed metal organic decomposition inks for silver, nickel, copper and aluminum for example. Conductivities close to that Of bulk metals were obtained. In this field the use of laser processing has been explored. The second application is the formation of the absorber layer in CuInSe(2) (CIS) and CdTe based photovoltaics. CIS/CIGS is the most efficient thin film photovoltaic technology, but typically employ capital intensive PVD materials deposition and subsequent selenization steps. Our approach uses liquid based precursors that can be inkjet printed and processed under atmospheric conditions. For CIGS various precursors were identified to produce In(2)Se(3), Cu(2)Se, Ga(2)Se(3), InGaSe(3) CuInSe(2) and CuIn(x)Ga(1-x)Se(2) films without a selenization step on various substrates. For CdTe various solution precursors have been developed that produce solar cell grade thin film CdTe. Details of film deposition, processing and devices will be discussed. The third application is in the field of organic photovoltaics. Here inkjet printing is used to deposit the photoactive layer such as a polythiophene, for example P3HT, and the conducting contact layer such as PEDOT/PSS. Details will be shown on how solvents can influence the quality of the printed material. Direct write processing of these materials may be enabling for this technology leading to all printed thin film photovoltaics. C1 [van Hest, Maikel F. A. M.; Miedaner, Alex; Curtis, Calvin J.; Leisch, Jennifer; Hersh, Peter; Ginley, David S.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP van Hest, MFAM (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 0 TC 0 Z9 0 U1 2 U2 7 PU SOC IMAGING SCIENCE & TECHNOLOGY PI SPRINGFIELD PA 7003 KILWORTH LANE, SPRINGFIELD, VA 22151 USA BN 978-0-89208-279-7 PY 2008 BP 902 EP 902 PG 1 WC Computer Science, Hardware & Architecture; Imaging Science & Photographic Technology SC Computer Science; Imaging Science & Photographic Technology GA BIK55 UT WOS:000260411500232 ER PT S AU Bigelow, DJ Qian, WJ AF Bigelow, Diana J. Qian, Wei-Jun BE Cadenas, E Packer, L TI Quantitative proteome mapping of nitrotyrosines SO NITRIC OXIDE, PART F: OXIDATIVE AND NITROSATIVE STRESS IN REDOX REGULATION OF CELL SIGNALING SE Methods in Enzymology LA English DT Review; Book Chapter ID TANDEM MASS-SPECTROMETRY; CYSTEINYL-PEPTIDE ENRICHMENT; INTEGRAL MEMBRANE-PROTEINS; HIGH-THROUGHPUT PROTEOMICS; IN-VIVO; TYROSINE NITRATION; NITRIC-OXIDE; MOUSE-BRAIN; IDENTIFICATION; SPECTRA AB An essential first step in the understanding disease and environmental perturbations is the early and quantitative detection of the increased levels of the inflammatory marker nitrotyrosine, as compared with its endogenous levels within the tissue or cellular proteome. Thus, methods that successfully address a proteome-wide quantitation of nitrotyrosine and related oxidative modifications can provide early biomarkers of risk and progression of disease, as well as effective strategies for therapy. Multidimensional separations LC coupled with tandem mass spectrometry (LC-MS/MS) has, in recent years, significantly expanded our knowledge of human (and mammalian model system) proteomes, including some nascent work in identification of posttranslational modifications. This chapter discusses the application of LC-MS/MS for quantitation and identification of nitrotyrosine-modified proteins within the context of complex protein mixtures presented in mammalian proteomes. C1 [Bigelow, Diana J.] Pacific NW Natl Lab, Cell Biol & Biochem Grp, Div Biol Sci, Richland, WA 99352 USA. [Qian, Wei-Jun] Pacific NW Natl Lab, Environm Mol Sci Lab, Div Biol Sci, Richland, WA 99352 USA. RP Bigelow, DJ (reprint author), Pacific NW Natl Lab, Cell Biol & Biochem Grp, Div Biol Sci, Richland, WA 99352 USA. RI Qian, Weijun/C-6167-2011 NR 36 TC 18 Z9 18 U1 0 U2 1 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA SN 0076-6879 BN 978-0-12-373967-4 J9 METHOD ENZYMOL JI Methods Enzymol. PY 2008 VL 440 BP 191 EP 205 DI 10.1016/S0076-6879(07)00811-7 PG 15 WC Biochemical Research Methods; Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA BHR79 UT WOS:000255834700011 PM 18423218 ER PT S AU Diaz, AA Samuel, TJ Tucker, BJ Cinson, AD Valencia, JD Gervais, KL Thompson, JS AF Diaz, Aaron A. Samuel, Todd J. Tucker, Brian J. Cinson, Anthony D. Valencia, Juan D. Gervais, Kevin L. Thompson, Jason S. BE Shull, PJ Wu, HF Diaz, AA Vogel, DW TI Through-container measurement of acoustic signatures for classification/discrimination of liquid explosives (LEs) and precursor threat liquids SO NONDESTRUCTIVE CHARACTERIZATION FOR COMPOSITE MATERIALS, AEROSPACE ENGINEERING, CIVIL INFRASTRUCTURE, AND HOMELAND SECURITY 2008 SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2008 CY MAR 11-13, 2008 CL San Diego, CA SP Amer Soc Mech Engn, Intelligent Mat Forum, Jet Propuls Lab, Natl Sci Fdn DE acoustic; ultrasonic; acoustic velocity; attenuation; noninvasive; database ID PULSE-COMPRESSION AB Work at the Pacific Northwest National Laboratory has demonstrated that ultrasonic property measurements can be effectively employed for the rapid and accurate classification/discrimination of liquids in small, carry-on, standard "stream-of-commerce" containers. This paper focuses on a set of laboratory measurements acquired with the PNNL prototype device as applied to several types of liquids (including threat liquids and precursor chemicals) to the manufacture of LEs in small commercially available plastic containers. C1 [Diaz, Aaron A.; Samuel, Todd J.; Tucker, Brian J.; Cinson, Anthony D.; Valencia, Juan D.; Gervais, Kevin L.; Thompson, Jason S.] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Diaz, AA (reprint author), Pacific NW Natl Lab, 902 Battelle Blvd, Richland, WA 99352 USA. NR 11 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 978-0-8194-7120-8 J9 PROC SPIE PY 2008 VL 6934 AR 693413 DI 10.1117/12.776420 PG 12 WC Acoustics; Engineering, Environmental; Engineering, Civil; Materials Science, Multidisciplinary; Materials Science, Characterization & Testing SC Acoustics; Engineering; Materials Science GA BHW62 UT WOS:000257064400032 ER PT S AU Mauss, F Hatchell, B Skorpik, J Silvers, K AF Mauss, Fred Hatchell, Brian Skorpik, Jim Silvers, Kurt BE Shull, PJ Wu, HF Diaz, AA Vogel, DW TI Health monitoring: Asset damage detection SO NONDESTRUCTIVE CHARACTERIZATION FOR COMPOSITE MATERIALS, AEROSPACE ENGINEERING, CIVIL INFRASTRUCTURE, AND HOMELAND SECURITY 2008 SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2008 CY MAR 11-13, 2008 CL San Diego, CA SP Amer Soc Mech Engn, Intelligent Mat Forum, Jet Propuls Lab, Natl Sci Fdn DE health monitoring; asset; detection; shock; drop; damage; low power; 3-axis; tri-axial; accelerometer AB The Health Monitor System (HMS) is a low-cost, low-power, battery-powered device capable of measuring temperature, humidity, and shock. Many mission-critical items are susceptible to shock damage. To help prevent shock damage, assets often are placed in robust custom containers with shock damping and absorption devices. Assets are still at risk of damage while in their protective containers. Having a Health Monitor attached to an asset or container allows the status of the asset to be determined. The Health Monitor can measure, record, store, analyze, and display to the user if a shock event has occurred that puts the asset at risk of failure. Extensive shock testing and algorithm implementation were required to develop a Health Monitor that uses a single-point 3-axis accelerometer to determine the type, height, and severity of a shock event. C1 [Mauss, Fred; Hatchell, Brian; Skorpik, Jim; Silvers, Kurt] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Mauss, F (reprint author), Pacific NW Natl Lab, POB 999,MS K5-17, Richland, WA 99352 USA. 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 978-0-8194-7120-8 J9 PROC SPIE PY 2008 VL 6934 AR 693417 DI 10.1117/12.776299 PG 9 WC Acoustics; Engineering, Environmental; Engineering, Civil; Materials Science, Multidisciplinary; Materials Science, Characterization & Testing SC Acoustics; Engineering; Materials Science GA BHW62 UT WOS:000257064400036 ER PT S AU Valencia, JD Diaz, AA Tucker, BJ AF Valencia, Juan D. Diaz, Aaron A. Tucker, Brian J. BE Shull, PJ Wu, HF Diaz, AA Vogel, DW TI Enhancing acoustic signal quality by rapidly switching between pulse-echo and through-transmission using diplexers SO NONDESTRUCTIVE CHARACTERIZATION FOR COMPOSITE MATERIALS, AEROSPACE ENGINEERING, CIVIL INFRASTRUCTURE, AND HOMELAND SECURITY 2008 SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2008 CY MAR 11-13, 2008 CL San Diego, CA SP Amer Soc Mech Engn, Intelligent Mat Forum, Jet Propuls Lab, Natl Sci Fdn DE ultrasonic; diplexer; signal isolation; noise reduction; pulse-echo; through-transmission; noninvasive; nondestructive; classification AB The increase of terrorism and its global impact has made the screening of the contents of liquid-filled containers a necessity. The ability to evaluate the contents of a container rapidly and accurately is a critical tool in maintaining global safety and security. Due to the immense quantities and large variety of containers shipped worldwide, there is a need for a technology that enables rapid and effective ways of conducting non-intrusive container inspections. Such inspections can be performed utilizing "through-transmission" or "pulse-echo" acoustic techniques, in combination with multiple frequency excitation pulses or waveforms. The challenge is combining and switching between the different acoustic techniques without distorting the excitation pulse or waveform, degrading or adding noise to the receive signal; while maintaining a portable, low-power, low-cost, and easy to use system. The Pacific Northwest National Laboratory (PNNL) has developed a methodology and prototype device focused on this challenge. The prototype relies on an advanced diplexer circuit capable of rapidly switching between both "through-transmission" and "pulse-echo" detection modes. This type of detection requires the prototype to isolate the pulsing circuitry from the receiving circuitry to prevent damage and reduce noise. The results of this work demonstrate that an advanced diplexer circuit can be effective; however, some bandwidth issues exist. This paper focuses on laboratory measurements and test results acquired with the PNNL prototype device as applied to several types of liquid-filled containers. Results of work conducted in the laboratory will be presented and future measurement platform enhancements will be discussed. C1 [Valencia, Juan D.; Diaz, Aaron A.; Tucker, Brian J.] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Valencia, JD (reprint author), Pacific NW Natl Lab, 902 Battelle Blvd, Richland, WA 99352 USA. EM juan.valencia@pnl.gov NR 4 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 978-0-8194-7120-8 J9 PROC SPIE PY 2008 VL 6934 AR 693414 DI 10.1117/12.776427 PG 8 WC Acoustics; Engineering, Environmental; Engineering, Civil; Materials Science, Multidisciplinary; Materials Science, Characterization & Testing SC Acoustics; Engineering; Materials Science GA BHW62 UT WOS:000257064400033 ER PT S AU Hoops, AA Farrow, RL Schulz, P Reichardt, TA Bambha, RP Schmitt, RL Kliner, DAV AF Hoops, Alexandra A. Farrow, Roger L. Schulz, Paul Reichardt, Thomas A. Bambha, Ray P. Schmitt, Randal L. Kliner, Dahv A. V. BE Powers, PE TI Compact, narrow-linewidth, tunable ultraviolet laser source for detecting Hg emissions - art. no. 68750K SO NONLINEAR FREQUENCY GENERATION AND CONVERSION: MATERIALS, DEVICES, AND APPLICATIONS VII SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Nonlinear Frequency Generation and Conversion - Materials, Devices, and Applications VII CY JAN 22-24, 2008 CL San Jose, CA SP SPIE DE harmonic generation and mixing; optical parametric amplifier; mercury monitoring ID FIBER AMPLIFIER AB Recent EPA regulations targeting mercury (Hg) emissions from utility coal boilers have prompted increased activity in the development of reliable chemical sensors for monitoring Hg emissions with high sensitivity, high specificity, and fast time response. We are developing a portable, laser-based instrument for real-time, stand-off detection of Hg emissions that involves exciting the Hg (6 (3)p(1) <-- 6 S-1(0)) transition at 253.7 nm and detecting the resulting resonant emission from Hg (6 (3)p(1)). The laser for this approach must be tunable over the Hg absorption line at 253.7 nm, while system performance modeling has indicated a desired output pulse energy >= 0.1 mu J and linewidth <= 5 GHz (full width at half-maximum, FWHM). In addition, the laser must have the requisite physical characteristics for use in coal-fired power plants. To meet these criteria, we are pursing a multistage frequency-conversion scheme involving an optical parametric amplifier (OPA). The OPA is pumped by the frequency-doubled output of a passively Q-switched, monolithic Nd:YAG micro-laser operating at 10-Hz repetition rate and is seeded by a 761-nm, cw distributed-feedback diode laser. The resultant pulse-amplified seed beam is frequency tripled in two nonlinear frequency-conversion steps to generate 253.7-nm light. The laser system is mounted on a 45.7 cm x 30.5 cm breadboard and can be further condensed using custom optical mounts. Based on simulations of the nonlinear frequency-conversion processes and current results, we expect this laser architecture to exceed the desired pulse energy. Moreover, this approach provides a compact, all-solid-state source of tunable, narrow-linewidth visible and ultraviolet radiation, which is required for many chemical sensing applications. C1 [Hoops, Alexandra A.; Farrow, Roger L.; Schulz, Paul; Reichardt, Thomas A.; Bambha, Ray P.; Kliner, Dahv A. V.] Sandia Natl Labs, Livermore, CA 94551 USA. RP Hoops, AA (reprint author), Sandia Natl Labs, POB 969,MS 9056, Livermore, CA 94551 USA. NR 8 TC 0 Z9 0 U1 0 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-7050-8 J9 P SOC PHOTO-OPT INS PY 2008 VL 6875 BP K8750 EP K8750 DI 10.1117/12.761907 PG 10 WC Materials Science, Multidisciplinary; Optics SC Materials Science; Optics GA BHQ62 UT WOS:000255510700017 ER PT J AU Fryxell, GE AF Fryxell, Glen E. TI Water purification using functional nanomaterials: sequestering toxic heavy metals SO NOVA HEDWIGIA LA English DT Article DE water purification; heavy metal; sorbent; separations; nanomaterials; self-assembly; monolayer ID SELF-ASSEMBLED MONOLAYERS; ANTHROPOGENIC MERCURY EMISSIONS; MESOPOROUS SUPPORTS SAMMS; ACTINIDE SEQUESTRATION; ADSORPTION BEHAVIOR; INITIAL EVALUATION; MOLECULAR-SIEVES; CO-CONDENSATION; DRINKING-WATER; PUBLIC-HEALTH AB Water and water quality are issues of critical importance to the future of humankind. Our water supply has been contaminated by a wide variety of industrial, military and natural Sources. There is a serious need for technologies to remove toxic heavy metals and radionuclides from the world's water supplies. Surfactant templated synthesis of mesoporous ceramics provides a versatile foundation upon which to create high efficiency environmental sorbents. These nanoporous ceramics condense a huge amount of surface area into a very small volume. These mesoporous architectures can be subsequently functionalised through molecular self-assembly. These functional mesoporous materials offer significant capabilities in terms of removal of heavy metals and radionuclides from groundwater and other liquid media. They are highly efficient sorbents, whose interfacial chemistry can be fine-tuned to sequester selectively a specific target species, such as heavy metals, tetrahedral oxometallate anions and radionuclides. Their rigid, open pore structure allows for rapid, efficient sorption kinetics. This manuscript provides an overview of the design, synthesis and performance of the sorbent materials. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. RP Fryxell, GE (reprint author), Pacific NW Natl Lab, Mailstop K2-44,POB 999, Richland, WA 99352 USA. EM glen.fryxell@pnl.gov NR 64 TC 3 Z9 3 U1 0 U2 10 PU GEBRUDER BORNTRAEGER PI STUTTGART PA JOHANNESSTR 3A, D-70176 STUTTGART, GERMANY SN 0029-5035 J9 NOVA HEDWIGIA JI Nova Hedwigia PY 2008 SU 133 BP 317 EP 329 PG 13 WC Plant Sciences SC Plant Sciences GA 276TO UT WOS:000254166200025 ER PT S AU Brady, MP Tortorelli, PF More, KL Payzant, EA Armstrong, BL Lin, HT Lance, MJ Huang, F Weaver, ML AF Brady, Michael P. Tortorelli, Peter F. More, Karren L. Payzant, E. Andrew Armstrong, Beth L. Lin, Hua-Tay Lance, Michael J. Huang, Feng Weaver, Mark L. BA Quadakkers, WJ BF Quadakkers, WJ BE Schutze, M TI Design strategies for oxidation-resistant intermetallic and advanced metallic alloys SO NOVEL APPROACHES TO IMPROVING HIGH TEMPERATURE CORROSION RESISTANCE: (EFC 47) SE European Federation of Corrosion Publications LA English DT Article; Book Chapter ID BIPOLAR PLATE MATERIALS; MEMBRANE FUEL-CELLS; WATER-VAPOR; INTERNAL NITRIDATION; THERMAL NITRIDATION; TIAL INTERMETALLICS; CARBIDE CATALYSTS; SCALE FORMATION; COATING DESIGN; BEHAVIOR C1 [Brady, Michael P.; Tortorelli, Peter F.; More, Karren L.; Payzant, E. Andrew; Armstrong, Beth L.; Lin, Hua-Tay; Lance, Michael J.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Huang, Feng; Weaver, Mark L.] Univ Alabama, Tuscaloosa, AL 35487 USA. RP Brady, MP (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. EM bradymp@ornl.gov; tortorellipf@ornl.gov RI Quadakkers, Willem J/B-5117-2015; OI Quadakkers, Willem J/0000-0002-0644-0192; Payzant, Edward/0000-0002-3447-2060 NR 53 TC 0 Z9 0 U1 0 U2 2 PU WOODHEAD PUBL LTD PI CAMBRIDGE PA ABINGTON HALL ABINGTON, CAMBRIDGE CB1 6AH, CAMBS, ENGLAND SN 1354-5116 BN 978 1 84569 238 4 J9 EUR FED CORROS PUBL PY 2008 IS 47 BP 3 EP 18 DI 10.1533/9781845694470.1.3 PG 16 WC Materials Science, Multidisciplinary SC Materials Science GA BOI60 UT WOS:000276746100002 ER PT S AU Ackennann, MR McGraw, JT Zimmer, PC AF Ackennann, Mark R. McGraw, John T. Zimmer, Peter C. BE Koshel, RJ Gregory, GG Moore, JD Krevor, DH TI Improved Spherical Aberration Corrector for fast spherical primary mirrors SO NOVEL OPTICAL SYSTEMS DESIGN AND OPTIMIZATION XI SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 11th Conference on Novel Optical Systems Design and Optimization CY AUG 10-14, 2008 CL San Diego, CA SP SPIE DE Telescope; Corrector; Aberration; Spherical ID LARGE TELESCOPE AB In the quest to design large and extremely large telescopes, one of the first questions encountered is that of basic optical configuration and shape of the primary mirror. Spherical mirrors have a number of advantages in production, testing and alignment but suffer from substantial spherical aberration, thereby requiring some form of corrective optics. Many designs for spherical aberration correctors are present in the literature, but each has its strengths and weaknesses. We present the design for a new spherical aberration corrector which is believed to offer higher performance with less complexity than previous approaches. The new design is substantially more compact and uses slower optical surfaces than most axially symmetric designs. It can scale to accommodate apertures as large as 100m, and adapts equally well to post prime focus and Cassegrain-like focus applications. C1 [Ackennann, Mark R.] Sandia Natl Labs, Livermore, CA 94550 USA. RP Ackennann, MR (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA. NR 13 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 978-0-8194-7281-6 J9 P SOC PHOTO-OPT INS PY 2008 VL 7061 AR 70610I DI 10.1117/12.791666 PG 24 WC Optics SC Optics GA BIQ85 UT WOS:000262082000014 ER PT B AU George, JS Koga, R McMahan, MA AF George, Jeffrey S. Koga, Rocky McMahan, Margaret A. GP IEEE TI Neutron Soft Errors in Xilinx FPGAs at Lawrence Berkeley National Laboratory SO NSRE: 2008 IEEE RADIATION EFFECTS DATA WORKSHOP, WORKSHOP RECORD LA English DT Proceedings Paper CT IEEE Radiation Effects Data Workshop 2008 CY JUL 14-18, 2008 CL Tucson, AZ SP IEEE AB The Lawrence Berkeley National Laboratory cyclotron offers broad-spectrum neutrons for single event effects testing. We discuss results from this beamline for neutron soft upsets in Xilinx Virtex-4 and -5 field-programmable-gate-array (FPGA) devices. C1 [George, Jeffrey S.; Koga, Rocky] Aerosp Corp, El Segundo, CA 90245 USA. [McMahan, Margaret A.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP George, JS (reprint author), Aerosp Corp, El Segundo, CA 90245 USA. EM Jeffrey.S.George@aero.org NR 8 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-2545-7 PY 2008 BP 118 EP + DI 10.1109/REDW.2008.28 PG 2 WC Engineering, Electrical & Electronic; Physics, Fluids & Plasmas; Physics, Nuclear SC Engineering; Physics GA BIM83 UT WOS:000260931600021 ER PT B AU McMahan, MA Blacktnore, E Cascio, EW Castaneda, C von Przewoski, B Eisen, H AF McMahan, Margaret A. Blacktnore, Ewart Cascio, Ethan W. Castaneda, Carlos von Przewoski, Barbara Eisen, Harvey GP IEEE TI Standard Practice for Dosimetry of Proton Beams for use in Radiation Effects Testing of Electronics SO NSRE: 2008 IEEE RADIATION EFFECTS DATA WORKSHOP, WORKSHOP RECORD LA English DT Proceedings Paper CT IEEE Radiation Effects Data Workshop 2008 CY JUL 14-18, 2008 CL Tucson, AZ SP IEEE ID SLIT SCATTERING; PARTICLES AB Representatives of facilities that routinely deliver protons for radiation effect testing are collaborating to establish a set of standard best practices for proton dosimetry. These best practices will be submitted to the ASTM International for adoption. C1 [McMahan, Margaret A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Blacktnore, Ewart] TRIUMF, Vancouver, BC V6T2A3, Canada. [Cascio, Ethan W.] Massachusetts Gen Hosp, Cambridge, MA USA. [Castaneda, Carlos] Univ Calif Davis, Davis, CA 95616 USA. [von Przewoski, Barbara] Indiana Univ, Cyclotron Facil, Bloomington, IN USA. [Eisen, Harvey] Chair Space Parts Working Grp Hardness Assurance, Bloomington, IN USA. RP McMahan, MA (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. EM p_mcmahan@lbl.gov; blackmore@triumf.ca; ecascio@partners.org; Castaneda@crocker.ucdavis.edu; bvonprze@indiana.edu; harveyeisen@aol.com NR 21 TC 2 Z9 2 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-2545-7 PY 2008 BP 135 EP + DI 10.1109/REDW.2008.31 PG 4 WC Engineering, Electrical & Electronic; Physics, Fluids & Plasmas; Physics, Nuclear SC Engineering; Physics GA BIM83 UT WOS:000260931600024 ER PT B AU Chahine, NO Collette, NM Thompson, H Loots, GG AF Chahine, Nadeen O. Collette, Nicole M. Thompson, Heather Loots, Gabriela G. BE Laudon, M Romanowicz, B TI Biocompatibility of Carbon Nanotubes for Cartilage Tissue Engineering SO NSTI NANOTECH 2008, VOL 1, TECHNICAL PROCEEDINGS: MATERIALS, FABRICATION, PARTICLES, AND CHARACTERIZATION LA English DT Proceedings Paper CT Nanotechnology Conference and Trade Show (Nanotech 2008) CY JUN 01-05, 2008 CL Boston, MA SP Accelrys Software, Ace Glass, Advance Reprod Corp, Adv Mat Technolog Pte Ltd, Agilent Technol, AIXTRON AG, AJA Int, ALM, Amuneal Mfg Corp, ANSYS, Anton Paar, Appl MicroStruct, Appl Surface Technol, Arkalon Chem Technolog, LLC, Arkema Grp, Artech House Publishers, Asemblon, ASML, Asylum Res, AZoNano, Banner & Witcoff, Beckman Coulter, Bio Nano Counsulting, BioForce Nanosci, Boneer Corp, Birck Nanotechnol Ctr, Purdue Univ, Discovery Pk, Brookhaven Instruments Corp, Buchanan Ingersoll & Rooney PC, Buhler AG, Business Week, Calif NanoSyst Inst, Capovani Brothers, Los Alamos, Ctr Integrated Nanotechnologies, Sandia Natl Labs, Ctr Integrated Nanotechnologies, Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Argonne Natl Lab, Ctr Nanoscale Mat, Cheap tubes, Clean Technol & Sustainable Ind Org, COMSOL, Cooley Godward Kronish LLP, Core Technol Grp, CRESTEC Corp, CSEM, CVI Melles Griot, Dept Innovat, Ind, Sci & Res, Digital Matrix, Draiswerke, ETH Zurich, Eulitha AG, Marks & Clerk, Marubent Techno Syst Corp, Massachusetts Technol Transfer Ctr, Mat Res Soc, Merck & Co, Microfluidics, Micromerit Instrument Corp, Microtrac, MINAT 2008, Messe Stuttgart, Minus K Technol, Misonix, Lawrence Berkeley Natl Lab, Mol Foundry, Motorola, Nano Korea 2008, Nano Sci & Technol Inst, nano tech 2009 Japan, Nano Technol Res Assoc Korea, NanoAndMore USA, NanoDynamics, NanoEurope 2008, NanoInk, Nanomotion, Nanon Imaging Ltd, NANOSENSORS, Nanosyst Initiat Munich, Nanotech No Europe 2008, nano Tox, Nano World AG, NCI, Natl Inst Stand & Technol, NIH, Natl Nanomfg Network, Natl Nanotechnol Infrastruct, GATech, Microelect Res Ctr, Nat Nano, Nat Publishing Grp, NETZSCH Fine Particle Technol LLC, NIL Technol ApS, Novomer, NTT Adv Technol Corp, Olympus Ind Amer, OSEC, Business Network Switzerland, Oxford Instruments, Particle Technol Labs, Penn State Univ, Photon Spectra, Physik Instrumente LP, picoDrill SA, Piezo Inst, PVD Prod, Q Sense, Quantum Analyt, Raith USA, European Patent Off, Evans Analyt Grp, EXAKT Technologies, First Nano, Flow Sci, FDA, Goodwin Procter LLP, Greater Houston Partnership, Greenberg Traurig LLP, Halcyonics, Headwaters Technol Innovat LLC, Heidelberg Instruments, Hielscher USA, HighNano Analyti, Hiscock & Barclay LLP, Hitachi High Technologies Amer, Hochschule Offenburg Univ Appl Sci, HOCKMEYER Equipment Corp, HORIBA Jobin Yvon, IBU-tec adv mat GmbH, IDA Ireland, ImageXpert, Inspec, Inc, IEEE, Inst Nanoscale & Quantum Sci & Technol Adv Res, IntelliSense Software Corp, Invest Germany, IOP Publishing, Italian Trade Commiss, JENOPTIK, Justus Liebig Univ, KAUST, Keithley Instruments, Kelvin Nanotechnol Ltd, Kodak, Kotobuki Ind Co, Ltd, Lake Shore Cryotron, MACRO M, NanoClay, Res Germany Land Ideas, RKS Legal Solut LLC, Dandia Natl Labs, Scottish Enterprise, SEMTech Solut, Serendip, Silvix Corp, SNS Nano Fiber Technol LLC, SoftMEMS LLC, Son & Mat, SW Nano Technologies, Specialty Coating Syst, Spectrum Labs, SPEX SamplePrep LLC, Springer, Sterne, Kessler, Goldstein & Fox PLLC, Strem Chem, Sukgyung A T Co, Lts, Surrey NanoSyst, SUSS MicroTec, Swissnanotech Pavilion, Taylor & Francis Grp LLC, CRC Press, TechConnect, Technovel Corp, Tekna Plasma Syst, Thinky Corp, Thomas Swan & Co Ltd, UGL Unicco, UK Trade & Investment, UniJet, Univ Munster, Univ Appl Sci, Univ Duisburg, Ctr Nanointegrat Duisburg, Vecco Instruments, Wasatch Mol Inc, Weidmann Plast Technol, Whiteman Osterman & Hanna LLP, Willy A Bachofen AG, WITec GmbH, World Gold Council DE Carbon Nanotubes; Cytotoxicity; Tissue Engineering; Biocompatibility; Cartilage AB Carbon nanotubes (CNT) have the potential to become an important component of scaffolding in tissue engineering, due to their unique physical properties. However, one major limitation of CNTs that must be overcome is their inherent cytotoxicity. In this study, we assessed the long-term biocompatibility of CNTs for chondrocyte growth. The effect of CNTs on chondrocyte viability and biochemical deposition has been examined in two dimensional (2D) cultures, and in three dimensional (3D) composite materials consisting of hydrogels and CNTs. The exposure of chondrocytes to CNTs was carried out up to 14 days in 2D culture and 21 days in 3D agarose composites. Our results suggest that functionalized CNTs alter the viability and metabolic response of cells over the 2 to 3 week duration. Interestingly, the results of this study also suggest the dose dependent effect of CNTs on cellular responses vary between 2D and 3D cultures, suggesting that chondrocytes tolerate the presence of CNTs at greater concentrations in 3D more than in 2D cultures. In addition, CNTs appear to have a stimulatory metabolic effect on chondrocytes in 3D cultures, reflected by enhanced production of glycosaminoglycans (GAGS) and collagen deposition. These findings support the notion that optimization of the use of nanotubes in cell-based therapies should be performed in 3D systems directly, and that CNTs appear to promote cellular growth and metabolic activity of chondrocytes. C1 [Chahine, Nadeen O.; Thompson, Heather; Loots, Gabriela G.] Lawrence Livermore Natl Lab, Livermore, CA USA. [Collette, Nicole M.; Loots, Gabriela G.] Univ Calif Berkeley, Berkeley, CA 94720 USA. RP Chahine, NO (reprint author), Lawrence Livermore Natl Lab, Livermore, CA USA. EM chahine2@llnl.gov; loots1@llnl.gov OI Chahine, Nadeen/0000-0002-0478-6042 FU U.S. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344, LLNL-ABS-400929] FX This work performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. LLNL-ABS-400929. NR 9 TC 0 Z9 0 U1 2 U2 3 PU CRC PRESS-TAYLOR & FRANCIS GROUP PI BOCA RATON PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA BN 978-1-4200-8503-7 PY 2008 BP 125 EP + PG 2 WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Materials Science, Coatings & Films; Physics, Condensed Matter SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA BMF46 UT WOS:000272169500034 ER PT B AU Elhadj, S Friddle, R Gilmer, G Noy, A De Yoreo, JJ AF Elhadj, S. Friddle, R. Gilmer, G. Noy, A. De Yoreo, J. J. BE Laudon, M Romanowicz, B TI Templated virus deposition: from molecular-scale force measurements to kinetic Monte Carlo simulations SO NSTI NANOTECH 2008, VOL 1, TECHNICAL PROCEEDINGS LA English DT Proceedings Paper CT Nanotechnology Conference and Trade Show (Nanotech 2008) CY JUN 01-05, 2008 CL Boston, MA SP Accelrys Software, Ace Glass, Advance Reprod Corp, Adv Mat Technologies Pte Ltd, Agilent Technologies, AIXTRON AG, AJA Int, ALM, Amuneal Mfg Corp, ANSYS, Anton Paar USA, Appl MicroStruct, Appl Surface Technologies, Arkalon Chem Technologies, LLC, Arkema Grp, Artech House Publishers, Asemblon, ASML, Asylum Res, AZoNano, Banner & Witcoff, Beckman Coulter, Bio Nano Counsulting, BioForce Nanosci, Boneer Corp, Birck Nanotechnol Ctr, Purdue Univ, Discovery Pk, Brookhaven Instruments Corp, Buchanan Ingersoll & Rooney PC, Buhler AG, Business Week, Calif NanoSyst Inst, Capovani Brothers, Los Alamos, Ctr Integrated Nanotechnologies, Sandia Natl Labs, Ctr Integrated Nanotechnologies, Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Argonne Natl Lab, Ctr Nanoscale Mat, Cheap tubes, Clean Technol & Sustainable Ind Org, COMSOL, Cooley Godward Kronish LLP, Core Technol Grp, CRESTEC Corp, CSEM, CVI Melles Griot, Dept Innovat, Ind, Sci & Res, Digital Matirx, Draiswerke, ETH Zurich, Eulitha AG, Marks & Clerk, Marubent Techno Syst Corp, Massachusetts Technol Transfer Ctr, Mat Res Soc, Merck & Co, Microfluidics, Micromerit Instrument Corp, Microtrac, MINAT 2008, Messe Stuttgart, Minus K Technol, Misonix, Lawrence Berkeley Natl Lab, Mol Foundry, Motorola, Nano Korea 2008, Nano Sci & Technol Inst`, nano tech 2009 Japan, Nano Technol Res Assoc Korea, NanoAndMore USA, NanoDynamics, NanoEurope 2008, NanoInk, Nanomotion, Nanon Imaging Ltd, NANOSENSORS, Nanosyst Initiat Munich, Nanotech No Europe 2008, nano Tox, Nano World AG`, NCI, Natl Inst Stand & Technol, NIH, Natl Nanomfg Network, Natl Nanotechnol Infrastruct, GATech, Microelect Res Ctr, Nat Nano, Nat Publishing Grp, NETZSCH Fine Particle Technol LLC, NIL Technol ApS, Novomer, NTT Adv Technol Corp, Olympus Ind Amer, OSEC, Business Network Switzerland, Oxford Instruments, Particle Technol Labs, Penn State Univ, Photon Spectra, Physik Instrumente LP, picoDrill SA, Piezo Inst, PVD Prod, Q Sense, Quantum Analyt, Raith USA, European Patent Off, Evans Analyt Grp, EXAKT Technologies, First Nano, Flow Sci, FDA, Goodwin Procter LLP, Greater Houston Partnership, Greenberg Traurig LLP, Halcyonics, Headwaters Technol Innovat LLC, Heidelberg Instruments, Hielscher USA, HighNano Analyti, Hiscock & Barclay LLP, Hitachi High Technologies Amr, Hochschule Offenburg Univ Appl Sci, HOCKMEYER Equipment Corp, HORIBA Jobin Yvon, IBU tec adv mat GmbH, IDA Ireland, ImageXpert, Inspec, Inc, IEEE, Inst Nanoscale & Quantum Sci & Technol Adv Res, IntelliSense Software Corp, Invest Germany, IOP Publishing, Italian Trade Commiss, JENOPTIK, Justus Liebig Univ, KAUST, Keithley Instruments, Kelvin Nanotechnol Ltd, Kodak, Kotobuki Ind Co, Ltd, Lake Shore Cryotron, MACRO M, NanoClay, Res Germany Land Ideas, RKS Legal Solut LLC, Dandia Natl Labs, Scottish Enterprise, SEMTech Solut, Serendip, Silvix Corp, SNS Nano Fiber Technol LLC, SoftMEMS LLC, Son & Mat, SW Nano Technologies, Specialty Coating Syst, Spectrum Labs, SPEX SamplePrep LLC, Springer, Sterne, Kessler, Goldstein & Fox PLLC, Strem Chem, Sukgyung A T Co, Lts, Surrey NanoSyst, SUSS MicroTec, Swissnanotech Pavilion, Taylor & Francis Grp LLC, CRC Press, TechConnect, Technovel Corp, Tekna Plasma Syst, Thinky Corp, Thomas Swan & Co Ltd, UGL Unicco, UK Trade & Investment, UniJet, Univ Muenster, Univ Appl Sci, Univ Duisburg, Ctr Nanointegrat Duisburg, Vecco Instruments, Wasatch Mol Inc, Weidmann Plast Technol, Whiteman Osterman & Hanna LLP, Willy A Bachofen AG, WITec GmbH, World Gold Council DE virus; force; monte carlo; energy; assembly AB The use of macromolecular scaffolds for hierarchical organization of molecules and materials is a common strategy in living systems that leads to emergent behavior. Here we describe an effort to relate interaction force measurements between viruses and modified substrates to the energy landscape during virus assembly on surfaces. Potentials and binding energies are then used in kinetic Monte Carlo simulations to predict assembly morphology under controlled conditions replicated experimentally. We use atomic force microscope (AFM) tips functionalized with specific chemical species to measure interactions in the assembly system, which includes Cow Pea Mosaic Virus (CPMV). CPMV virus particles were engineered to express specific functional groups to modulate the strength and kinetics of interactions and assembly morphology. We show that the CPMV morphological evolution predicted by the simulations correlates with AFM observations. C1 [Elhadj, S.; Friddle, R.; Gilmer, G.; Noy, A.; De Yoreo, J. J.] Lawrence Livermore Natl Lab, Livermore, CA USA. RP Elhadj, S (reprint author), Lawrence Livermore Natl Lab, Livermore, CA USA. EM elhadj2@llnl.gov NR 1 TC 0 Z9 0 U1 0 U2 1 PU CRC PRESS-TAYLOR & FRANCIS GROUP PI BOCA RATON PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA BN 978-1-4200-8503-7 PY 2008 BP 499 EP 500 PG 2 WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Materials Science, Coatings & Films; Physics, Condensed Matter SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA BMF46 UT WOS:000272169500130 ER PT B AU Chung, SW Presley, AD Elhadj, S Hok, S Hah, SS Chernov, AA Francis, MB Eaton, BE Feldheim, DL DeYoreo, JJ AF Chung, Sung-Wook Presley, Andrew D. Elhadj, Selim Hok, Saphon Hah, Sang Soo Chernov, Alex A. Francis, Matthew B. Eaton, Bruce E. Feldheim, Daniel L. DeYoreo, James J. BE Laudon, M Romanowicz, B TI Scanning Probe-Based fabrication of 3D Nanostructures via Affinity Templates, Functional RNA and Meniscus-Mediated Surface Remodeling SO NSTI NANOTECH 2008, VOL 1, TECHNICAL PROCEEDINGS: MATERIALS, FABRICATION, PARTICLES, AND CHARACTERIZATION LA English DT Proceedings Paper CT Nanotechnology Conference and Trade Show (Nanotech 2008) CY JUN 01-05, 2008 CL Boston, MA SP Accelrys Software, Ace Glass, Advance Reprod Corp, Adv Mat Technolog Pte Ltd, Agilent Technol, AIXTRON AG, AJA Int, ALM, Amuneal Mfg Corp, ANSYS, Anton Paar, Appl MicroStruct, Appl Surface Technol, Arkalon Chem Technolog, LLC, Arkema Grp, Artech House Publishers, Asemblon, ASML, Asylum Res, AZoNano, Banner & Witcoff, Beckman Coulter, Bio Nano Counsulting, BioForce Nanosci, Boneer Corp, Birck Nanotechnol Ctr, Purdue Univ, Discovery Pk, Brookhaven Instruments Corp, Buchanan Ingersoll & Rooney PC, Buhler AG, Business Week, Calif NanoSyst Inst, Capovani Brothers, Los Alamos, Ctr Integrated Nanotechnologies, Sandia Natl Labs, Ctr Integrated Nanotechnologies, Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Argonne Natl Lab, Ctr Nanoscale Mat, Cheap tubes, Clean Technol & Sustainable Ind Org, COMSOL, Cooley Godward Kronish LLP, Core Technol Grp, CRESTEC Corp, CSEM, CVI Melles Griot, Dept Innovat, Ind, Sci & Res, Digital Matrix, Draiswerke, ETH Zurich, Eulitha AG, Marks & Clerk, Marubent Techno Syst Corp, Massachusetts Technol Transfer Ctr, Mat Res Soc, Merck & Co, Microfluidics, Micromerit Instrument Corp, Microtrac, MINAT 2008, Messe Stuttgart, Minus K Technol, Misonix, Lawrence Berkeley Natl Lab, Mol Foundry, Motorola, Nano Korea 2008, Nano Sci & Technol Inst, nano tech 2009 Japan, Nano Technol Res Assoc Korea, NanoAndMore USA, NanoDynamics, NanoEurope 2008, NanoInk, Nanomotion, Nanon Imaging Ltd, NANOSENSORS, Nanosyst Initiat Munich, Nanotech No Europe 2008, nano Tox, Nano World AG, NCI, Natl Inst Stand & Technol, NIH, Natl Nanomfg Network, Natl Nanotechnol Infrastruct, GATech, Microelect Res Ctr, Nat Nano, Nat Publishing Grp, NETZSCH Fine Particle Technol LLC, NIL Technol ApS, Novomer, NTT Adv Technol Corp, Olympus Ind Amer, OSEC, Business Network Switzerland, Oxford Instruments, Particle Technol Labs, Penn State Univ, Photon Spectra, Physik Instrumente LP, picoDrill SA, Piezo Inst, PVD Prod, Q Sense, Quantum Analyt, Raith USA, European Patent Off, Evans Analyt Grp, EXAKT Technologies, First Nano, Flow Sci, FDA, Goodwin Procter LLP, Greater Houston Partnership, Greenberg Traurig LLP, Halcyonics, Headwaters Technol Innovat LLC, Heidelberg Instruments, Hielscher USA, HighNano Analyti, Hiscock & Barclay LLP, Hitachi High Technologies Amer, Hochschule Offenburg Univ Appl Sci, HOCKMEYER Equipment Corp, HORIBA Jobin Yvon, IBU-tec adv mat GmbH, IDA Ireland, ImageXpert, Inspec, Inc, IEEE, Inst Nanoscale & Quantum Sci & Technol Adv Res, IntelliSense Software Corp, Invest Germany, IOP Publishing, Italian Trade Commiss, JENOPTIK, Justus Liebig Univ, KAUST, Keithley Instruments, Kelvin Nanotechnol Ltd, Kodak, Kotobuki Ind Co, Ltd, Lake Shore Cryotron, MACRO M, NanoClay, Res Germany Land Ideas, RKS Legal Solut LLC, Dandia Natl Labs, Scottish Enterprise, SEMTech Solut, Serendip, Silvix Corp, SNS Nano Fiber Technol LLC, SoftMEMS LLC, Son & Mat, SW Nano Technologies, Specialty Coating Syst, Spectrum Labs, SPEX SamplePrep LLC, Springer, Sterne, Kessler, Goldstein & Fox PLLC, Strem Chem, Sukgyung A T Co, Lts, Surrey NanoSyst, SUSS MicroTec, Swissnanotech Pavilion, Taylor & Francis Grp LLC, CRC Press, TechConnect, Technovel Corp, Tekna Plasma Syst, Thinky Corp, Thomas Swan & Co Ltd, UGL Unicco, UK Trade & Investment, UniJet, Univ Munster, Univ Appl Sci, Univ Duisburg, Ctr Nanointegrat Duisburg, Vecco Instruments, Wasatch Mol Inc, Weidmann Plast Technol, Whiteman Osterman & Hanna LLP, Willy A Bachofen AG, WITec GmbH, World Gold Council DE scanning probe microscopy; scanning probe nanolithography; nanostructures; affinity templates; virus; RNA ID DIP-PEN NANOLITHOGRAPHY; TOBACCO-MOSAIC-VIRUS; SELF-ASSEMBLED MONOLAYERS; SIZED PROTEIN-PATTERNS; IN-VITRO SELECTION; SOLAR-CELLS; QUANTUM DOTS; NANOIMPRINT LITHOGRAPHY; SOFT LITHOGRAPHY; BUILDING-BLOCKS AB Developing generic platforms to organize discrete molecular elements and nanostructures into deterministic patterns at surfaces is one of the central challenges in the field of nanotechnology. Here we review three applications of the atomic force microscope (AFM) that address this challenge. In the first, we use two-step nanografting to create patterns of self-assembled monolayers (SAMs) to drive the organization of virus particles that have been either genetically or chemically modified to bind to the SAMs. Virus-SAM chemistries are described that provide irreversible and reversible binding, respectively. In the second, we use similar SAM patterns as affinity templates that have been designed to covalently bind oligonucleotides engineered to bind to the SAMs and selected for their ability to mediate the subsequent growth of metallic nanocrystals. In the final application, the liquid meniscus that condenses at the AFM tip-substrate contact is used as a physical tool to both modulate the surface topography of a water-soluble substrate and guide the hierarchical assembly of Au nanoparticles into nanowires. All three approaches can be generalized to meet the requirements of a wide variety of materials systems and thus provide a potential route towards development of a generic platform for molecular and materials organization. C1 [Chung, Sung-Wook; Presley, Andrew D.; Elhadj, Selim; Hok, Saphon; Hah, Sang Soo; Chernov, Alex A.; DeYoreo, James J.] Lawrence Livermore Natl Lab, Chem Mat Earth & Life Sci Directorate, 7000 East Ave, Livermore, CA 94551 USA. [Presley, Andrew D.; Francis, Matthew B.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Eaton, Bruce E.; Feldheim, Daniel L.] Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA. [DeYoreo, James J.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA 94720 USA. RP Chung, SW (reprint author), Lawrence Livermore Natl Lab, Chem Mat Earth & Life Sci Directorate, 7000 East Ave, Livermore, CA 94551 USA. EM chung20@llnl.gov; jjdeyoreo@lbl.gov FU U.S. Department of Energy (DOE); Office of Basic Energy Science (BES); Division of Materials Science and Engineering; Lawrence Livermore National Laboratory (LLNL) [06-LW-051]; Laboratory Directed Research and Development Program of Lawrence Berkeley National Laboratory (LBNL) under the Department of Energy (DOE) [DE-ACO2- 05CH11231]; NSF; LLNL Student Employee Graduate Research Fellowship Program (SEGRF); US. Department of Energy by Lawrence Livermore National Laboratory [DE AC52 07NA27344] FX We acknowledge professors John E. Johnson, Tianwei Lin, and Dr. Anju Chatterji from the Scripps Research Institute for preparing and supplying genetically engineered Cys- and His-CPMV particles. We acknowledge the conmbutions of Drs. Ted Tarasow, Lisa Gugliotti and Julie Perkins to their initial helps on development of synthetic methods and optimization of RNA mediated reactions. S.W.C. and JD.Y. acknowledge U.S. Department of Energy (DOE), Office of Basic Energy Science (BES). Division of Materials Science and Engineering for support of this research. S.W.C. acknowledges Lawrence Livermore National Laboratory (LLNL) Laboratory Directed Research and Development Program (LDRD Laboratory-Wide Funding, 06-LW-051) for support of this research. AD.P. and M.B.F. acknowledge Laboratory Directed Research and Development Program of Lawrence Berkeley National Laboratory (LBNL) under the Department of Energy (DOE) Contract DE-ACO2- 05CH11231. AD.P. acknowledges LLNL Student Employee Graduate Research Fellowship Program (SEGRF). B.E.E. and D.L.F. acknowledge NSF, the W. M. Keck Foundation. and U.S. Department of Energy (DOE). This work performed under the auspices of the US. Department of Energy by Lawrence Livermore National Laboratory under Contract DE AC52 07NA27344. NR 79 TC 0 Z9 0 U1 0 U2 1 PU CRC PRESS-TAYLOR & FRANCIS GROUP PI BOCA RATON PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA BN 978-1-4200-8503-7 PY 2008 BP 501 EP + PG 4 WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Materials Science, Coatings & Films; Physics, Condensed Matter SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA BMF46 UT WOS:000272169500131 ER PT B AU Gang, O Maye, MM Nykypanchuk, D Xiong, HM van der Lelie, D AF Gang, Oleg Maye, Mathew M. Nykypanchuk, Dmytro Xiong, Huiming van der Lelie, Daniel BE Laudon, M Romanowicz, B TI DNA-guided Assembly of Organized Nano-Architectures SO NSTI NANOTECH 2008, VOL 1, TECHNICAL PROCEEDINGS LA English DT Proceedings Paper CT Nanotechnology Conference and Trade Show (Nanotech 2008) CY JUN 01-05, 2008 CL Boston, MA SP Accelrys Software, Ace Glass, Advance Reprod Corp, Adv Mat Technologies Pte Ltd, Agilent Technologies, AIXTRON AG, AJA Int, ALM, Amuneal Mfg Corp, ANSYS, Anton Paar USA, Appl MicroStruct, Appl Surface Technologies, Arkalon Chem Technologies, LLC, Arkema Grp, Artech House Publishers, Asemblon, ASML, Asylum Res, AZoNano, Banner & Witcoff, Beckman Coulter, Bio Nano Counsulting, BioForce Nanosci, Boneer Corp, Birck Nanotechnol Ctr, Purdue Univ, Discovery Pk, Brookhaven Instruments Corp, Buchanan Ingersoll & Rooney PC, Buhler AG, Business Week, Calif NanoSyst Inst, Capovani Brothers, Los Alamos, Ctr Integrated Nanotechnologies, Sandia Natl Labs, Ctr Integrated Nanotechnologies, Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Argonne Natl Lab, Ctr Nanoscale Mat, Cheap tubes, Clean Technol & Sustainable Ind Org, COMSOL, Cooley Godward Kronish LLP, Core Technol Grp, CRESTEC Corp, CSEM, CVI Melles Griot, Dept Innovat, Ind, Sci & Res, Digital Matirx, Draiswerke, ETH Zurich, Eulitha AG, Marks & Clerk, Marubent Techno Syst Corp, Massachusetts Technol Transfer Ctr, Mat Res Soc, Merck & Co, Microfluidics, Micromerit Instrument Corp, Microtrac, MINAT 2008, Messe Stuttgart, Minus K Technol, Misonix, Lawrence Berkeley Natl Lab, Mol Foundry, Motorola, Nano Korea 2008, Nano Sci & Technol Inst`, nano tech 2009 Japan, Nano Technol Res Assoc Korea, NanoAndMore USA, NanoDynamics, NanoEurope 2008, NanoInk, Nanomotion, Nanon Imaging Ltd, NANOSENSORS, Nanosyst Initiat Munich, Nanotech No Europe 2008, nano Tox, Nano World AG`, NCI, Natl Inst Stand & Technol, NIH, Natl Nanomfg Network, Natl Nanotechnol Infrastruct, GATech, Microelect Res Ctr, Nat Nano, Nat Publishing Grp, NETZSCH Fine Particle Technol LLC, NIL Technol ApS, Novomer, NTT Adv Technol Corp, Olympus Ind Amer, OSEC, Business Network Switzerland, Oxford Instruments, Particle Technol Labs, Penn State Univ, Photon Spectra, Physik Instrumente LP, picoDrill SA, Piezo Inst, PVD Prod, Q Sense, Quantum Analyt, Raith USA, European Patent Off, Evans Analyt Grp, EXAKT Technologies, First Nano, Flow Sci, FDA, Goodwin Procter LLP, Greater Houston Partnership, Greenberg Traurig LLP, Halcyonics, Headwaters Technol Innovat LLC, Heidelberg Instruments, Hielscher USA, HighNano Analyti, Hiscock & Barclay LLP, Hitachi High Technologies Amr, Hochschule Offenburg Univ Appl Sci, HOCKMEYER Equipment Corp, HORIBA Jobin Yvon, IBU tec adv mat GmbH, IDA Ireland, ImageXpert, Inspec, Inc, IEEE, Inst Nanoscale & Quantum Sci & Technol Adv Res, IntelliSense Software Corp, Invest Germany, IOP Publishing, Italian Trade Commiss, JENOPTIK, Justus Liebig Univ, KAUST, Keithley Instruments, Kelvin Nanotechnol Ltd, Kodak, Kotobuki Ind Co, Ltd, Lake Shore Cryotron, MACRO M, NanoClay, Res Germany Land Ideas, RKS Legal Solut LLC, Dandia Natl Labs, Scottish Enterprise, SEMTech Solut, Serendip, Silvix Corp, SNS Nano Fiber Technol LLC, SoftMEMS LLC, Son & Mat, SW Nano Technologies, Specialty Coating Syst, Spectrum Labs, SPEX SamplePrep LLC, Springer, Sterne, Kessler, Goldstein & Fox PLLC, Strem Chem, Sukgyung A T Co, Lts, Surrey NanoSyst, SUSS MicroTec, Swissnanotech Pavilion, Taylor & Francis Grp LLC, CRC Press, TechConnect, Technovel Corp, Tekna Plasma Syst, Thinky Corp, Thomas Swan & Co Ltd, UGL Unicco, UK Trade & Investment, UniJet, Univ Muenster, Univ Appl Sci, Univ Duisburg, Ctr Nanointegrat Duisburg, Vecco Instruments, Wasatch Mol Inc, Weidmann Plast Technol, Whiteman Osterman & Hanna LLP, Willy A Bachofen AG, WITec GmbH, World Gold Council DE DNA; self-assembly; hybrid systems; nanoparticles; superlattices ID CRYSTALLIZATION; ARRAYS AB Incorporation of DNA into nano-object design provides a unique opportunity to establish highly selective and reversible interactions between the components of nanosystems. Assembly approaches based on the nano-object's addressability promise powerful routes for creation of rationally designed nano-systems for the development of novel magnetic, photonic and plasmonic metamaterials. DNA provides a powerful platform due its unique recognition capabilities, mechanical and physicochemical stability, and synthetic accessibility of practically any desired nucleotide sequences. Recently, strategies based on DNA programmability for a pre-designed placement of nanoparticles in one- and two-dimensions using scaffolds have been demonstrated [1, 2]. However, in three dimensions, where theory predicted a rich phase behavior[3, 4], experimental realization has remained elusive[5], with nanoscale systems forming amorphous aggregates. C1 [Gang, Oleg; Maye, Mathew M.; Nykypanchuk, Dmytro; Xiong, Huiming] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. RP Gang, O (reprint author), Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. EM ogang@bnl.gov NR 12 TC 0 Z9 0 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 978-1-4200-8503-7 PY 2008 BP 571 EP 573 PG 3 WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Materials Science, Coatings & Films; Physics, Condensed Matter SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA BMF46 UT WOS:000272169500149 ER PT B AU Ocola, LE Lin, XM AF Ocola, L. E. Lin, X. -M. BE Laudon, M Romanowicz, B TI Templated Self-Assembly of 5 nm Gold Nanoparticles SO NSTI NANOTECH 2008, VOL 1, TECHNICAL PROCEEDINGS LA English DT Proceedings Paper CT Nanotechnology Conference and Trade Show (Nanotech 2008) CY JUN 01-05, 2008 CL Boston, MA SP Accelrys Software, Ace Glass, Advance Reprod Corp, Adv Mat Technologies Pte Ltd, Agilent Technologies, AIXTRON AG, AJA Int, ALM, Amuneal Mfg Corp, ANSYS, Anton Paar USA, Appl MicroStruct, Appl Surface Technologies, Arkalon Chem Technologies, LLC, Arkema Grp, Artech House Publishers, Asemblon, ASML, Asylum Res, AZoNano, Banner & Witcoff, Beckman Coulter, Bio Nano Counsulting, BioForce Nanosci, Boneer Corp, Birck Nanotechnol Ctr, Purdue Univ, Discovery Pk, Brookhaven Instruments Corp, Buchanan Ingersoll & Rooney PC, Buhler AG, Business Week, Calif NanoSyst Inst, Capovani Brothers, Los Alamos, Ctr Integrated Nanotechnologies, Sandia Natl Labs, Ctr Integrated Nanotechnologies, Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Argonne Natl Lab, Ctr Nanoscale Mat, Cheap tubes, Clean Technol & Sustainable Ind Org, COMSOL, Cooley Godward Kronish LLP, Core Technol Grp, CRESTEC Corp, CSEM, CVI Melles Griot, Dept Innovat, Ind, Sci & Res, Digital Matirx, Draiswerke, ETH Zurich, Eulitha AG, Marks & Clerk, Marubent Techno Syst Corp, Massachusetts Technol Transfer Ctr, Mat Res Soc, Merck & Co, Microfluidics, Micromerit Instrument Corp, Microtrac, MINAT 2008, Messe Stuttgart, Minus K Technol, Misonix, Lawrence Berkeley Natl Lab, Mol Foundry, Motorola, Nano Korea 2008, Nano Sci & Technol Inst`, nano tech 2009 Japan, Nano Technol Res Assoc Korea, NanoAndMore USA, NanoDynamics, NanoEurope 2008, NanoInk, Nanomotion, Nanon Imaging Ltd, NANOSENSORS, Nanosyst Initiat Munich, Nanotech No Europe 2008, nano Tox, Nano World AG`, NCI, Natl Inst Stand & Technol, NIH, Natl Nanomfg Network, Natl Nanotechnol Infrastruct, GATech, Microelect Res Ctr, Nat Nano, Nat Publishing Grp, NETZSCH Fine Particle Technol LLC, NIL Technol ApS, Novomer, NTT Adv Technol Corp, Olympus Ind Amer, OSEC, Business Network Switzerland, Oxford Instruments, Particle Technol Labs, Penn State Univ, Photon Spectra, Physik Instrumente LP, picoDrill SA, Piezo Inst, PVD Prod, Q Sense, Quantum Analyt, Raith USA, European Patent Off, Evans Analyt Grp, EXAKT Technologies, First Nano, Flow Sci, FDA, Goodwin Procter LLP, Greater Houston Partnership, Greenberg Traurig LLP, Halcyonics, Headwaters Technol Innovat LLC, Heidelberg Instruments, Hielscher USA, HighNano Analyti, Hiscock & Barclay LLP, Hitachi High Technologies Amr, Hochschule Offenburg Univ Appl Sci, HOCKMEYER Equipment Corp, HORIBA Jobin Yvon, IBU tec adv mat GmbH, IDA Ireland, ImageXpert, Inspec, Inc, IEEE, Inst Nanoscale & Quantum Sci & Technol Adv Res, IntelliSense Software Corp, Invest Germany, IOP Publishing, Italian Trade Commiss, JENOPTIK, Justus Liebig Univ, KAUST, Keithley Instruments, Kelvin Nanotechnol Ltd, Kodak, Kotobuki Ind Co, Ltd, Lake Shore Cryotron, MACRO M, NanoClay, Res Germany Land Ideas, RKS Legal Solut LLC, Dandia Natl Labs, Scottish Enterprise, SEMTech Solut, Serendip, Silvix Corp, SNS Nano Fiber Technol LLC, SoftMEMS LLC, Son & Mat, SW Nano Technologies, Specialty Coating Syst, Spectrum Labs, SPEX SamplePrep LLC, Springer, Sterne, Kessler, Goldstein & Fox PLLC, Strem Chem, Sukgyung A T Co, Lts, Surrey NanoSyst, SUSS MicroTec, Swissnanotech Pavilion, Taylor & Francis Grp LLC, CRC Press, TechConnect, Technovel Corp, Tekna Plasma Syst, Thinky Corp, Thomas Swan & Co Ltd, UGL Unicco, UK Trade & Investment, UniJet, Univ Muenster, Univ Appl Sci, Univ Duisburg, Ctr Nanointegrat Duisburg, Vecco Instruments, Wasatch Mol Inc, Weidmann Plast Technol, Whiteman Osterman & Hanna LLP, Willy A Bachofen AG, WITec GmbH, World Gold Council ID NANOSTRUCTURES AB Combining top-down electron beam lithography and bottom-up colloidal chemical assembly can potentially lead to large scale patterning of nanocrystals on arbitrary substrates. We report on the templated self-assembly of 5 nm gold nanoparticles in both trenches and in geometries that lend themselves to large area self-assembly. Preliminary results show that templates that retain the self-assembly symmetry can be used to induce self-assembly at distances significantly larger than trench geometry constraints. Further progress in templated self-assembly will lead to novel nanophotonic and chemical sensing devices, along with the means to extend top-down nanofabrication below the 10 nm barrier. C1 [Ocola, L. E.; Lin, X. -M.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. RP Ocola, LE (reprint author), Argonne Natl Lab, Ctr Nanoscale Mat, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 9 TC 0 Z9 0 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 978-1-4200-8503-7 PY 2008 BP 578 EP 580 PG 3 WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Materials Science, Coatings & Films; Physics, Condensed Matter SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA BMF46 UT WOS:000272169500151 ER PT B AU Gao, J Wang, HL Shreve, AP Iyer, R AF Gao, Jun Wang, Hsing Lin Shreve, Andrew P. Iyer, Rashi BE Laudon, M Romanowicz, B TI Modulation of gamma-Irradiation Induced ROS Responses by Engineered Fullerenes in Human Epidermal Keratinocytes SO NSTI NANOTECH 2008, VOL 2, TECHNICAL PROCEEDINGS LA English DT Proceedings Paper CT Nanotechnology Conference and Trade Show (Nanotech 2008) CY JUN 01-05, 2008 CL Boston, MA SP Accelrys Software, Ace Glass, Advance Reprod Corp, Adv Mat Technologies Pte Ltd, Agilent Technologies, AIXTRON AG, AJA Int, ALM, Amuneal Mfg Corp, ANSYS, Anton Paar USA, Appl MicroStruct, Appl Surface Technologies, Arkalon Chem Technologies, LLC, Arkema Grp, Artech House Publishers, Asemblon, ASML, Asylum Res, AZoNano, Banner & Witcoff, Beckman Coulter, Bio Nano Counsulting, BioForce Nanosci, Boneer Corp, Birck Nanotechnol Ctr, Purdue Univ, Discovery Pk, Brookhaven Instruments Corp, Buchanan Ingersoll & Rooney PC, Buhler AG, Business Week, Calif NanoSyst Inst, Capovani Brothers, Los Alamos, Ctr Integrated Nanotechnologies, Sandia Natl Labs, Ctr Integrated Nanotechnologies, Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Argonne Natl Lab, Ctr Nanoscale Mat, Cheap tubes, Clean Technol & Sustainable Ind Org, COMSOL, Cooley Godward Kronish LLP, Core Technol Grp, CRESTEC Corp, CSEM, CVI Melles Griot, Dept Innovat, Ind, Sci & Res, Digital Matirx, Draiswerke, ETH Zurich, Eulitha AG, Marks & Clerk, Marubent Techno Syst Corp, Massachusetts Technol Transfer Ctr, Mat Res Soc, Merck & Co, Microfluidics, Micromerit Instrument Corp, Microtrac, MINAT 2008, Messe Stuttgart, Minus K Technol, Misonix, Lawrence Berkeley Natl Lab, Mol Foundry, Motorola, Nano Korea 2008, Nano Sci & Technol Inst`, nano tech 2009 Japan, Nano Technol Res Assoc Korea, NanoAndMore USA, NanoDynamics, NanoEurope 2008, NanoInk, Nanomotion, Nanon Imaging Ltd, NANOSENSORS, Nanosyst Initiat Munich, Nanotech No Europe 2008, nano Tox, Nano World AG`, NCI, Natl Inst Stand & Technol, NIH, Natl Nanomfg Network, Natl Nanotechnol Infrastruct, GATech, Microelect Res Ctr, Nat Nano, Nat Publishing Grp, NETZSCH Fine Particle Technol LLC, NIL Technol ApS, Novomer, NTT Adv Technol Corp, Olympus Ind Amer, OSEC, Business Network Switzerland, Oxford Instruments, Particle Technol Labs, Penn State Univ, Photon Spectra, Physik Instrumente LP, picoDrill SA, Piezo Inst, PVD Prod, Q Sense, Quantum Analyt, Raith USA, European Patent Off, Evans Analyt Grp, EXAKT Technologies, First Nano, Flow Sci, FDA, Goodwin Procter LLP, Greater Houston Partnership, Greenberg Traurig LLP, Halcyonics, Headwaters Technol Innovat LLC, Heidelberg Instruments, Hielscher USA, HighNano Analyti, Hiscock & Barclay LLP, Hitachi High Technologies Amr, Hochschule Offenburg Univ Appl Sci, HOCKMEYER Equipment Corp, HORIBA Jobin Yvon, IBU tec adv mat GmbH, IDA Ireland, ImageXpert, Inspec, Inc, IEEE, Inst Nanoscale & Quantum Sci & Technol Adv Res, IntelliSense Software Corp, Invest Germany, IOP Publishing, Italian Trade Commiss, JENOPTIK, Justus Liebig Univ, KAUST, Keithley Instruments, Kelvin Nanotechnol Ltd, Kodak, Kotobuki Ind Co, Ltd, Lake Shore Cryotron, MACRO M, NanoClay, Res Germany Land Ideas, RKS Legal Solut LLC, Dandia Natl Labs, Scottish Enterprise, SEMTech Solut, Serendip, Silvix Corp, SNS Nano Fiber Technol LLC, SoftMEMS LLC, Son & Mat, SW Nano Technologies, Specialty Coating Syst, Spectrum Labs, SPEX SamplePrep LLC, Springer, Sterne, Kessler, Goldstein & Fox PLLC, Strem Chem, Sukgyung A T Co, Lts, Surrey NanoSyst, SUSS MicroTec, Swissnanotech Pavilion, Taylor & Francis Grp LLC, CRC Press, TechConnect, Technovel Corp, Tekna Plasma Syst, Thinky Corp, Thomas Swan & Co Ltd, UGL Unicco, UK Trade & Investment, UniJet, Univ Muenster, Univ Appl Sci, Univ Duisburg, Ctr Nanointegrat Duisburg, Vecco Instruments, Wasatch Mol Inc, Weidmann Plast Technol, Whiteman Osterman & Hanna LLP, Willy A Bachofen AG, WITec GmbH, World Gold Council DE fullerene; reactive oxygen species; keratinocyte; irradiation exposure and nanotechology ID DERIVATIVES; RADIATION AB High-dose ionizing irradiations can cause acute tissue and organ damage, especially severe cutaneous lesions. These cutaneous injuries often result in further complications and incur high mortality. Therefore, it is critical to develop effective therapeutic approaches for acute high-dose ionizing irradiation injury. Intracellular reactive oxygen species (ROS) have been implicated in mediating irradiation-induced cell damage. In the present study, we investigated the protective effect of engineered fullerene nanoparticles on gamma irradiation-induced intracellular ROS levels in human epidermal keratinocytes (HEK). Cells were exposed to water-soluble fullerene derivatives at concentrations of 25, 50, and 100 mu g/ml. Exposure of HEK cells to high-dose gamma (gamma) irradiation (10 and 17 Gy) resulted in a significant increase in cellular ROS levels. The observed gamma-irradiation induced ROS response was notably attenuated by modified-fullerenes, CD-C(60), tris-C(60) and hexa-C(60). Our results point to the potential use of fullerene derivatives as novel therapeutic agents for protection against high-dose irradiation generated ROS-induced cellular damage. C1 [Gao, Jun; Wang, Hsing Lin; Shreve, Andrew P.; Iyer, Rashi] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87544 USA. RP Iyer, R (reprint author), Los Alamos Natl Lab, Biosci Div, TA 43,MS888, Los Alamos, NM 87544 USA. EM rashi@lanl.gov NR 14 TC 0 Z9 0 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 978-1-4200-8504-4 PY 2008 BP 77 EP 80 PG 4 WC Nanoscience & Nanotechnology; Medicine, General & Internal; Medicine, Research & Experimental; Materials Science, Biomaterials SC Science & Technology - Other Topics; General & Internal Medicine; Research & Experimental Medicine; Materials Science GA BMF49 UT WOS:000272169900021 ER PT B AU Fornasiero, F Park, HG Holt, JK Stadermann, M Kim, S In, JB Grigoropoulos, CP Noy, A Bakajin, O AF Fornasiero, Francesco Park, Hyung Gyu Holt, Jason K. Stadermann, Michael Kim, Sangil In, Jung Bin Grigoropoulos, Costas P. Noy, Aleksandr Bakajin, Olgica BE Laudon, M Romanowicz, B TI Nanofiltration of Electrolyte Solutions by Sub-2nm Carbon Nanotube Membranes SO NSTI NANOTECH 2008, VOL 2, TECHNICAL PROCEEDINGS LA English DT Proceedings Paper CT Nanotechnology Conference and Trade Show (Nanotech 2008) CY JUN 01-05, 2008 CL Boston, MA SP Accelrys Software, Ace Glass, Advance Reprod Corp, Adv Mat Technologies Pte Ltd, Agilent Technologies, AIXTRON AG, AJA Int, ALM, Amuneal Mfg Corp, ANSYS, Anton Paar USA, Appl MicroStruct, Appl Surface Technologies, Arkalon Chem Technologies, LLC, Arkema Grp, Artech House Publishers, Asemblon, ASML, Asylum Res, AZoNano, Banner & Witcoff, Beckman Coulter, Bio Nano Counsulting, BioForce Nanosci, Boneer Corp, Birck Nanotechnol Ctr, Purdue Univ, Discovery Pk, Brookhaven Instruments Corp, Buchanan Ingersoll & Rooney PC, Buhler AG, Business Week, Calif NanoSyst Inst, Capovani Brothers, Los Alamos, Ctr Integrated Nanotechnologies, Sandia Natl Labs, Ctr Integrated Nanotechnologies, Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Argonne Natl Lab, Ctr Nanoscale Mat, Cheap tubes, Clean Technol & Sustainable Ind Org, COMSOL, Cooley Godward Kronish LLP, Core Technol Grp, CRESTEC Corp, CSEM, CVI Melles Griot, Dept Innovat, Ind, Sci & Res, Digital Matirx, Draiswerke, ETH Zurich, Eulitha AG, Marks & Clerk, Marubent Techno Syst Corp, Massachusetts Technol Transfer Ctr, Mat Res Soc, Merck & Co, Microfluidics, Micromerit Instrument Corp, Microtrac, MINAT 2008, Messe Stuttgart, Minus K Technol, Misonix, Lawrence Berkeley Natl Lab, Mol Foundry, Motorola, Nano Korea 2008, Nano Sci & Technol Inst`, nano tech 2009 Japan, Nano Technol Res Assoc Korea, NanoAndMore USA, NanoDynamics, NanoEurope 2008, NanoInk, Nanomotion, Nanon Imaging Ltd, NANOSENSORS, Nanosyst Initiat Munich, Nanotech No Europe 2008, nano Tox, Nano World AG`, NCI, Natl Inst Stand & Technol, NIH, Natl Nanomfg Network, Natl Nanotechnol Infrastruct, GATech, Microelect Res Ctr, Nat Nano, Nat Publishing Grp, NETZSCH Fine Particle Technol LLC, NIL Technol ApS, Novomer, NTT Adv Technol Corp, Olympus Ind Amer, OSEC, Business Network Switzerland, Oxford Instruments, Particle Technol Labs, Penn State Univ, Photon Spectra, Physik Instrumente LP, picoDrill SA, Piezo Inst, PVD Prod, Q Sense, Quantum Analyt, Raith USA, European Patent Off, Evans Analyt Grp, EXAKT Technologies, First Nano, Flow Sci, FDA, Goodwin Procter LLP, Greater Houston Partnership, Greenberg Traurig LLP, Halcyonics, Headwaters Technol Innovat LLC, Heidelberg Instruments, Hielscher USA, HighNano Analyti, Hiscock & Barclay LLP, Hitachi High Technologies Amr, Hochschule Offenburg Univ Appl Sci, HOCKMEYER Equipment Corp, HORIBA Jobin Yvon, IBU tec adv mat GmbH, IDA Ireland, ImageXpert, Inspec, Inc, IEEE, Inst Nanoscale & Quantum Sci & Technol Adv Res, IntelliSense Software Corp, Invest Germany, IOP Publishing, Italian Trade Commiss, JENOPTIK, Justus Liebig Univ, KAUST, Keithley Instruments, Kelvin Nanotechnol Ltd, Kodak, Kotobuki Ind Co, Ltd, Lake Shore Cryotron, MACRO M, NanoClay, Res Germany Land Ideas, RKS Legal Solut LLC, Dandia Natl Labs, Scottish Enterprise, SEMTech Solut, Serendip, Silvix Corp, SNS Nano Fiber Technol LLC, SoftMEMS LLC, Son & Mat, SW Nano Technologies, Specialty Coating Syst, Spectrum Labs, SPEX SamplePrep LLC, Springer, Sterne, Kessler, Goldstein & Fox PLLC, Strem Chem, Sukgyung A T Co, Lts, Surrey NanoSyst, SUSS MicroTec, Swissnanotech Pavilion, Taylor & Francis Grp LLC, CRC Press, TechConnect, Technovel Corp, Tekna Plasma Syst, Thinky Corp, Thomas Swan & Co Ltd, UGL Unicco, UK Trade & Investment, UniJet, Univ Muenster, Univ Appl Sci, Univ Duisburg, Ctr Nanointegrat Duisburg, Vecco Instruments, Wasatch Mol Inc, Weidmann Plast Technol, Whiteman Osterman & Hanna LLP, Willy A Bachofen AG, WITec GmbH, World Gold Council DE carbon nanotube; membrane; ion exclusion; fast flow ID WATER; TRANSPORT; GROWTH AB Both MD simulations and experimental studies have shown that liquid and gas flow through carbon nanotubes with nanometer size diameter is exceptionally fast. For applications in separation technology, selectivity is required together with fast flow. In this work, we use pressure-driven filtration experiments to study ion exclusion in silicon nitride/sub-2-nm CNT composite membranes as a function of solution ionic strength, pH, and ion valence. We show that carbon nanotube membranes exhibit significant ion exclusion at low salt concentration. Our results support a rejection mechanism dominated by electrostatic interactions between fixed membrane charges and mobile ions, while steric and hydrodynamic effects appear to be less important. Comparison with commercial nanofiltration membranes for water softening reveals that our carbon nanotube membranes provides far superior water fluxes for similar ion rejection capabilities. C1 [Fornasiero, Francesco; Park, Hyung Gyu; Holt, Jason K.; Stadermann, Michael; Noy, Aleksandr; Bakajin, Olgica] Lawrence Livermore Natl Lab, CMELS, Biosci & Biotechnol Div, Livermore, CA 94550 USA. RP Fornasiero, F (reprint author), Lawrence Livermore Natl Lab, CMELS, Biosci & Biotechnol Div, Livermore, CA 94550 USA. RI Stadermann, Michael /A-5936-2012; Fornasiero, Francesco/I-3802-2012; Park, Hyung Gyu/F-3056-2013 OI Stadermann, Michael /0000-0001-8920-3581; Park, Hyung Gyu/0000-0001-8121-2344 NR 17 TC 0 Z9 0 U1 1 U2 6 PU CRC PRESS-TAYLOR & FRANCIS GROUP PI BOCA RATON PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA BN 978-1-4200-8504-4 PY 2008 BP 106 EP 109 PG 4 WC Nanoscience & Nanotechnology; Medicine, General & Internal; Medicine, Research & Experimental; Materials Science, Biomaterials SC Science & Technology - Other Topics; General & Internal Medicine; Research & Experimental Medicine; Materials Science GA BMF49 UT WOS:000272169900030 ER PT B AU Svedruzic-Chang, D Blackburn, JL McDonald, TJ Heben, MJ King, PW AF Svedruzic-Chang, D. Blackburn, J. L. McDonald, T. J. Heben, M. J. King, P. W. BE Laudon, M Romanowicz, B TI Studies of Hybrid Nano-Bio-System: Single-Walled Carbon Nanotubes and Hydrogenase SO NSTI NANOTECH 2008, VOL 2, TECHNICAL PROCEEDINGS LA English DT Proceedings Paper CT Nanotechnology Conference and Trade Show (Nanotech 2008) CY JUN 01-05, 2008 CL Boston, MA SP Accelrys Software, Ace Glass, Advance Reprod Corp, Adv Mat Technologies Pte Ltd, Agilent Technologies, AIXTRON AG, AJA Int, ALM, Amuneal Mfg Corp, ANSYS, Anton Paar USA, Appl MicroStruct, Appl Surface Technologies, Arkalon Chem Technologies, LLC, Arkema Grp, Artech House Publishers, Asemblon, ASML, Asylum Res, AZoNano, Banner & Witcoff, Beckman Coulter, Bio Nano Counsulting, BioForce Nanosci, Boneer Corp, Birck Nanotechnol Ctr, Purdue Univ, Discovery Pk, Brookhaven Instruments Corp, Buchanan Ingersoll & Rooney PC, Buhler AG, Business Week, Calif NanoSyst Inst, Capovani Brothers, Los Alamos, Ctr Integrated Nanotechnologies, Sandia Natl Labs, Ctr Integrated Nanotechnologies, Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Argonne Natl Lab, Ctr Nanoscale Mat, Cheap tubes, Clean Technol & Sustainable Ind Org, COMSOL, Cooley Godward Kronish LLP, Core Technol Grp, CRESTEC Corp, CSEM, CVI Melles Griot, Dept Innovat, Ind, Sci & Res, Digital Matirx, Draiswerke, ETH Zurich, Eulitha AG, Marks & Clerk, Marubent Techno Syst Corp, Massachusetts Technol Transfer Ctr, Mat Res Soc, Merck & Co, Microfluidics, Micromerit Instrument Corp, Microtrac, MINAT 2008, Messe Stuttgart, Minus K Technol, Misonix, Lawrence Berkeley Natl Lab, Mol Foundry, Motorola, Nano Korea 2008, Nano Sci & Technol Inst`, nano tech 2009 Japan, Nano Technol Res Assoc Korea, NanoAndMore USA, NanoDynamics, NanoEurope 2008, NanoInk, Nanomotion, Nanon Imaging Ltd, NANOSENSORS, Nanosyst Initiat Munich, Nanotech No Europe 2008, nano Tox, Nano World AG`, NCI, Natl Inst Stand & Technol, NIH, Natl Nanomfg Network, Natl Nanotechnol Infrastruct, GATech, Microelect Res Ctr, Nat Nano, Nat Publishing Grp, NETZSCH Fine Particle Technol LLC, NIL Technol ApS, Novomer, NTT Adv Technol Corp, Olympus Ind Amer, OSEC, Business Network Switzerland, Oxford Instruments, Particle Technol Labs, Penn State Univ, Photon Spectra, Physik Instrumente LP, picoDrill SA, Piezo Inst, PVD Prod, Q Sense, Quantum Analyt, Raith USA, European Patent Off, Evans Analyt Grp, EXAKT Technologies, First Nano, Flow Sci, FDA, Goodwin Procter LLP, Greater Houston Partnership, Greenberg Traurig LLP, Halcyonics, Headwaters Technol Innovat LLC, Heidelberg Instruments, Hielscher USA, HighNano Analyti, Hiscock & Barclay LLP, Hitachi High Technologies Amr, Hochschule Offenburg Univ Appl Sci, HOCKMEYER Equipment Corp, HORIBA Jobin Yvon, IBU tec adv mat GmbH, IDA Ireland, ImageXpert, Inspec, Inc, IEEE, Inst Nanoscale & Quantum Sci & Technol Adv Res, IntelliSense Software Corp, Invest Germany, IOP Publishing, Italian Trade Commiss, JENOPTIK, Justus Liebig Univ, KAUST, Keithley Instruments, Kelvin Nanotechnol Ltd, Kodak, Kotobuki Ind Co, Ltd, Lake Shore Cryotron, MACRO M, NanoClay, Res Germany Land Ideas, RKS Legal Solut LLC, Dandia Natl Labs, Scottish Enterprise, SEMTech Solut, Serendip, Silvix Corp, SNS Nano Fiber Technol LLC, SoftMEMS LLC, Son & Mat, SW Nano Technologies, Specialty Coating Syst, Spectrum Labs, SPEX SamplePrep LLC, Springer, Sterne, Kessler, Goldstein & Fox PLLC, Strem Chem, Sukgyung A T Co, Lts, Surrey NanoSyst, SUSS MicroTec, Swissnanotech Pavilion, Taylor & Francis Grp LLC, CRC Press, TechConnect, Technovel Corp, Tekna Plasma Syst, Thinky Corp, Thomas Swan & Co Ltd, UGL Unicco, UK Trade & Investment, UniJet, Univ Muenster, Univ Appl Sci, Univ Duisburg, Ctr Nanointegrat Duisburg, Vecco Instruments, Wasatch Mol Inc, Weidmann Plast Technol, Whiteman Osterman & Hanna LLP, Willy A Bachofen AG, WITec GmbH, World Gold Council DE nano-bio-systems; single-walled carbon nanotubes; hydrogenase; charge-transfer; Raman AB We have examined changes in single-walled carbon nanotube's (SWNTs) optical signals upon addition of [FeFe] hydrogenases (H(2)ase). Evidence was found that stable SWNT/H(2)ase charge-transfer complexes self-assemble in solution under conditions of H(2)ase catalytic turnover. Raman studies suggest that metallic SWNT can undergo either forward or reverse electron transfer depending on the H(2)ase redox state. This amphoteric behavior is due to the electronic band structure of the metallic SWNTs, which leads to both occupied and empty mid-gap electron states at the Fermi level. In contrast, semiconducting SWNT, which had no mid-gap states, can only accept electrons from the reduced H(2)ase. In context of hybrid SWNT-H(2)ase based devices, metallic SWNTs are more suited for applications as a conductive molecular wire, while semiconducting SWNTs are more suited for use in nanoscale sensors or photovoltaic devices. C1 [Svedruzic-Chang, D.; Blackburn, J. L.; McDonald, T. J.; Heben, M. J.; King, P. W.] Natl Renewable Energy Lab, Golden, CO 80201 USA. RP Svedruzic-Chang, D (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80201 USA. EM drazenka_svedruzic@nrel.gov; Jeffrey_blackburn@nrel.gov; timmy.mac@gmail.com; michael_heben@nrel.gov NR 4 TC 0 Z9 0 U1 0 U2 4 PU CRC PRESS-TAYLOR & FRANCIS GROUP PI BOCA RATON PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA BN 978-1-4200-8504-4 PY 2008 BP 289 EP 292 PG 4 WC Nanoscience & Nanotechnology; Medicine, General & Internal; Medicine, Research & Experimental; Materials Science, Biomaterials SC Science & Technology - Other Topics; General & Internal Medicine; Research & Experimental Medicine; Materials Science GA BMF49 UT WOS:000272169900079 ER PT B AU Frank, E Lin, Y Makowski, L AF Frank, Ed Lin, Yao Makowski, Lee BE Laudon, M Romanowicz, B TI Combinatorial Approaches to Constructing Protein Nanostructures SO NSTI NANOTECH 2008, VOL 2, TECHNICAL PROCEEDINGS LA English DT Proceedings Paper CT Nanotechnology Conference and Trade Show (Nanotech 2008) CY JUN 01-05, 2008 CL Boston, MA SP Accelrys Software, Ace Glass, Advance Reprod Corp, Adv Mat Technologies Pte Ltd, Agilent Technologies, AIXTRON AG, AJA Int, ALM, Amuneal Mfg Corp, ANSYS, Anton Paar USA, Appl MicroStruct, Appl Surface Technologies, Arkalon Chem Technologies, LLC, Arkema Grp, Artech House Publishers, Asemblon, ASML, Asylum Res, AZoNano, Banner & Witcoff, Beckman Coulter, Bio Nano Counsulting, BioForce Nanosci, Boneer Corp, Birck Nanotechnol Ctr, Purdue Univ, Discovery Pk, Brookhaven Instruments Corp, Buchanan Ingersoll & Rooney PC, Buhler AG, Business Week, Calif NanoSyst Inst, Capovani Brothers, Los Alamos, Ctr Integrated Nanotechnologies, Sandia Natl Labs, Ctr Integrated Nanotechnologies, Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Argonne Natl Lab, Ctr Nanoscale Mat, Cheap tubes, Clean Technol & Sustainable Ind Org, COMSOL, Cooley Godward Kronish LLP, Core Technol Grp, CRESTEC Corp, CSEM, CVI Melles Griot, Dept Innovat, Ind, Sci & Res, Digital Matirx, Draiswerke, ETH Zurich, Eulitha AG, Marks & Clerk, Marubent Techno Syst Corp, Massachusetts Technol Transfer Ctr, Mat Res Soc, Merck & Co, Microfluidics, Micromerit Instrument Corp, Microtrac, MINAT 2008, Messe Stuttgart, Minus K Technol, Misonix, Lawrence Berkeley Natl Lab, Mol Foundry, Motorola, Nano Korea 2008, Nano Sci & Technol Inst`, nano tech 2009 Japan, Nano Technol Res Assoc Korea, NanoAndMore USA, NanoDynamics, NanoEurope 2008, NanoInk, Nanomotion, Nanon Imaging Ltd, NANOSENSORS, Nanosyst Initiat Munich, Nanotech No Europe 2008, nano Tox, Nano World AG`, NCI, Natl Inst Stand & Technol, NIH, Natl Nanomfg Network, Natl Nanotechnol Infrastruct, GATech, Microelect Res Ctr, Nat Nano, Nat Publishing Grp, NETZSCH Fine Particle Technol LLC, NIL Technol ApS, Novomer, NTT Adv Technol Corp, Olympus Ind Amer, OSEC, Business Network Switzerland, Oxford Instruments, Particle Technol Labs, Penn State Univ, Photon Spectra, Physik Instrumente LP, picoDrill SA, Piezo Inst, PVD Prod, Q Sense, Quantum Analyt, Raith USA, European Patent Off, Evans Analyt Grp, EXAKT Technologies, First Nano, Flow Sci, FDA, Goodwin Procter LLP, Greater Houston Partnership, Greenberg Traurig LLP, Halcyonics, Headwaters Technol Innovat LLC, Heidelberg Instruments, Hielscher USA, HighNano Analyti, Hiscock & Barclay LLP, Hitachi High Technologies Amr, Hochschule Offenburg Univ Appl Sci, HOCKMEYER Equipment Corp, HORIBA Jobin Yvon, IBU tec adv mat GmbH, IDA Ireland, ImageXpert, Inspec, Inc, IEEE, Inst Nanoscale & Quantum Sci & Technol Adv Res, IntelliSense Software Corp, Invest Germany, IOP Publishing, Italian Trade Commiss, JENOPTIK, Justus Liebig Univ, KAUST, Keithley Instruments, Kelvin Nanotechnol Ltd, Kodak, Kotobuki Ind Co, Ltd, Lake Shore Cryotron, MACRO M, NanoClay, Res Germany Land Ideas, RKS Legal Solut LLC, Dandia Natl Labs, Scottish Enterprise, SEMTech Solut, Serendip, Silvix Corp, SNS Nano Fiber Technol LLC, SoftMEMS LLC, Son & Mat, SW Nano Technologies, Specialty Coating Syst, Spectrum Labs, SPEX SamplePrep LLC, Springer, Sterne, Kessler, Goldstein & Fox PLLC, Strem Chem, Sukgyung A T Co, Lts, Surrey NanoSyst, SUSS MicroTec, Swissnanotech Pavilion, Taylor & Francis Grp LLC, CRC Press, TechConnect, Technovel Corp, Tekna Plasma Syst, Thinky Corp, Thomas Swan & Co Ltd, UGL Unicco, UK Trade & Investment, UniJet, Univ Muenster, Univ Appl Sci, Univ Duisburg, Ctr Nanointegrat Duisburg, Vecco Instruments, Wasatch Mol Inc, Weidmann Plast Technol, Whiteman Osterman & Hanna LLP, Willy A Bachofen AG, WITec GmbH, World Gold Council DE phage display; nanostructures; proteins; hybrid structures ID PHAGE; SELECTION; BIOLOGY; DOMAIN AB A major bottleneck in the use of proteins for the construction of complex nanostructures is the design of protein interfaces that will bind to one another with high-affinity and high specificity. The interaction of subunits with one another may be mediated by non-covalent, high-affinity protein-protein contacts, as is the case in many naturally occurring multi-subunit complexes. However, there are currently no well developed strategies for the design of complementary binding surfaces such as those required for the engineering of multi-subunit nanostructures. In the absence of a design paradigm, a promising alternative is the selection of tight binders from large, combinatorial libraries. The design specifications for these libraries include stability and physical robustness of the scaffold molecule; diversity of the displayed peptides; and case of synthesis/expression. C1 [Frank, Ed] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. RP Frank, E (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. EM efrank@northwestern.edu; lin@anl.gov; lmakowski@anl.gov NR 12 TC 0 Z9 0 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 978-1-4200-8504-4 PY 2008 BP 453 EP 456 PG 4 WC Nanoscience & Nanotechnology; Medicine, General & Internal; Medicine, Research & Experimental; Materials Science, Biomaterials SC Science & Technology - Other Topics; General & Internal Medicine; Research & Experimental Medicine; Materials Science GA BMF49 UT WOS:000272169900123 ER PT B AU Dattelbaum, AM Montano, GA Roco, A Shreve, AP Iyer, S AF Dattelbaum, Andrew M. Montano, Gabriel A. Roco, Armanda Shreve, Andrew P. Iyer, Srinivas BE Laudon, M Romanowicz, B TI Myelin-mimetic Lipid Multilayers SO NSTI NANOTECH 2008, VOL 2, TECHNICAL PROCEEDINGS LA English DT Proceedings Paper CT Nanotechnology Conference and Trade Show (Nanotech 2008) CY JUN 01-05, 2008 CL Boston, MA SP Accelrys Software, Ace Glass, Advance Reprod Corp, Adv Mat Technologies Pte Ltd, Agilent Technologies, AIXTRON AG, AJA Int, ALM, Amuneal Mfg Corp, ANSYS, Anton Paar USA, Appl MicroStruct, Appl Surface Technologies, Arkalon Chem Technologies, LLC, Arkema Grp, Artech House Publishers, Asemblon, ASML, Asylum Res, AZoNano, Banner & Witcoff, Beckman Coulter, Bio Nano Counsulting, BioForce Nanosci, Boneer Corp, Birck Nanotechnol Ctr, Purdue Univ, Discovery Pk, Brookhaven Instruments Corp, Buchanan Ingersoll & Rooney PC, Buhler AG, Business Week, Calif NanoSyst Inst, Capovani Brothers, Los Alamos, Ctr Integrated Nanotechnologies, Sandia Natl Labs, Ctr Integrated Nanotechnologies, Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Argonne Natl Lab, Ctr Nanoscale Mat, Cheap tubes, Clean Technol & Sustainable Ind Org, COMSOL, Cooley Godward Kronish LLP, Core Technol Grp, CRESTEC Corp, CSEM, CVI Melles Griot, Dept Innovat, Ind, Sci & Res, Digital Matirx, Draiswerke, ETH Zurich, Eulitha AG, Marks & Clerk, Marubent Techno Syst Corp, Massachusetts Technol Transfer Ctr, Mat Res Soc, Merck & Co, Microfluidics, Micromerit Instrument Corp, Microtrac, MINAT 2008, Messe Stuttgart, Minus K Technol, Misonix, Lawrence Berkeley Natl Lab, Mol Foundry, Motorola, Nano Korea 2008, Nano Sci & Technol Inst`, nano tech 2009 Japan, Nano Technol Res Assoc Korea, NanoAndMore USA, NanoDynamics, NanoEurope 2008, NanoInk, Nanomotion, Nanon Imaging Ltd, NANOSENSORS, Nanosyst Initiat Munich, Nanotech No Europe 2008, nano Tox, Nano World AG`, NCI, Natl Inst Stand & Technol, NIH, Natl Nanomfg Network, Natl Nanotechnol Infrastruct, GATech, Microelect Res Ctr, Nat Nano, Nat Publishing Grp, NETZSCH Fine Particle Technol LLC, NIL Technol ApS, Novomer, NTT Adv Technol Corp, Olympus Ind Amer, OSEC, Business Network Switzerland, Oxford Instruments, Particle Technol Labs, Penn State Univ, Photon Spectra, Physik Instrumente LP, picoDrill SA, Piezo Inst, PVD Prod, Q Sense, Quantum Analyt, Raith USA, European Patent Off, Evans Analyt Grp, EXAKT Technologies, First Nano, Flow Sci, FDA, Goodwin Procter LLP, Greater Houston Partnership, Greenberg Traurig LLP, Halcyonics, Headwaters Technol Innovat LLC, Heidelberg Instruments, Hielscher USA, HighNano Analyti, Hiscock & Barclay LLP, Hitachi High Technologies Amr, Hochschule Offenburg Univ Appl Sci, HOCKMEYER Equipment Corp, HORIBA Jobin Yvon, IBU tec adv mat GmbH, IDA Ireland, ImageXpert, Inspec, Inc, IEEE, Inst Nanoscale & Quantum Sci & Technol Adv Res, IntelliSense Software Corp, Invest Germany, IOP Publishing, Italian Trade Commiss, JENOPTIK, Justus Liebig Univ, KAUST, Keithley Instruments, Kelvin Nanotechnol Ltd, Kodak, Kotobuki Ind Co, Ltd, Lake Shore Cryotron, MACRO M, NanoClay, Res Germany Land Ideas, RKS Legal Solut LLC, Dandia Natl Labs, Scottish Enterprise, SEMTech Solut, Serendip, Silvix Corp, SNS Nano Fiber Technol LLC, SoftMEMS LLC, Son & Mat, SW Nano Technologies, Specialty Coating Syst, Spectrum Labs, SPEX SamplePrep LLC, Springer, Sterne, Kessler, Goldstein & Fox PLLC, Strem Chem, Sukgyung A T Co, Lts, Surrey NanoSyst, SUSS MicroTec, Swissnanotech Pavilion, Taylor & Francis Grp LLC, CRC Press, TechConnect, Technovel Corp, Tekna Plasma Syst, Thinky Corp, Thomas Swan & Co Ltd, UGL Unicco, UK Trade & Investment, UniJet, Univ Muenster, Univ Appl Sci, Univ Duisburg, Ctr Nanointegrat Duisburg, Vecco Instruments, Wasatch Mol Inc, Weidmann Plast Technol, Whiteman Osterman & Hanna LLP, Willy A Bachofen AG, WITec GmbH, World Gold Council DE myelin; biomimetic; lipid; multi-bilayer; protein ID BASIC-PROTEIN; MEMBRANE; MODELS AB The myelin sheath is among nature's most fascinating nanoscale assemblies. In spite of its critical role in physiology, several questions on the structure-function relationship of myelin and its components remain unanswered. This is chiefly due to the fact that interactions between the constituents of myelin are particularly difficult to study in intact tissue. The compact, multi- lamellar structure of myelin inhibits or limits access to the interacting membrane surfaces. In addition, characterizing the interaction of purified myelin components has provided only limited information on such things as compositional and environmental effects on myelin structure. Thus, there is a tremendous need to develop novel biomimetic systems that can act as experimental models to help understand this critical component of complex neural systems. Our long-term goal is to create an assembly that closely mimics structural and functional aspects of natural myelin. Here we present data demonstrating the controlled assembly of protein linked multi-bilayers. We also present data supporting the applicability of approaches such as spectroscopic ellipsometry, AFM and fluorescence microscopy to analyze the structural integrity of the assemblies. C1 [Dattelbaum, Andrew M.; Montano, Gabriel A.; Roco, Armanda; Shreve, Andrew P.] Los Alamos Natl Lab, MPA Ctr Integrated Nanotechnol, Los Alamos, NM USA. RP Dattelbaum, AM (reprint author), Los Alamos Natl Lab, MPA Ctr Integrated Nanotechnol, Los Alamos, NM USA. EM siyer@lanl.gov NR 18 TC 0 Z9 0 U1 2 U2 4 PU CRC PRESS-TAYLOR & FRANCIS GROUP PI BOCA RATON PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA BN 978-1-4200-8504-4 PY 2008 BP 480 EP 483 PG 4 WC Nanoscience & Nanotechnology; Medicine, General & Internal; Medicine, Research & Experimental; Materials Science, Biomaterials SC Science & Technology - Other Topics; General & Internal Medicine; Research & Experimental Medicine; Materials Science GA BMF49 UT WOS:000272169900131 ER PT B AU Bogart, KHA El-Kady, I Grubbs, RK Rahimian, K Sanchez, AM Ellis, AR Wiwi, M McCormick, FB Shir, DJL Rogers, JA AF Bogart, K. H. A. El-Kady, I. Grubbs, R. K. Rahimian, K. Sanchez, A. M. Ellis, A. R. Wiwi, M. McCormick, F. B. Shir, D. J. -L. Rogers, J. A. BE Laudon, M Romanowicz, B TI Simulation and Fabrication of Large-Area 3D Nanostructures SO NSTI NANOTECH 2008, VOL 3, TECHNICAL PROCEEDINGS LA English DT Proceedings Paper CT Nanotechnology Conference and Trade Show (Nanotech 2008) CY JUN 01-05, 2008 CL Boston, MA SP Accelrys Software, Ace Glass, Advance Reprod Corp, Adv Mat Technologies Pte Ltd, Agilent Technologies, AIXTRON AG, AJA Int, ALM, Amuneal Mfg Corp, ANSYS, Anton Paar USA, Appl MicroStruct, Appl Surface Technologies, Arkalon Chem Technologies, LLC, Arkema Grp, Artech House Publishers, Asemblon, ASML, Asylum Res, AZoNano, Banner & Witcoff, Beckman Coulter, Bio Nano Counsulting, BioForce Nanosci, Boneer Corp, Birck Nanotechnol Ctr, Purdue Univ, Discovery Pk, Brookhaven Instruments Corp, Buchanan Ingersoll & Rooney PC, Buhler AG, Business Week, Calif NanoSyst Inst, Capovani Brothers, Los Alamos, Ctr Integrated Nanotechnologies, Sandia Natl Labs, Ctr Integrated Nanotechnologies, Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Argonne Natl Lab, Ctr Nanoscale Mat, Cheap tubes, Clean Technol & Sustainable Ind Org, COMSOL, Cooley Godward Kronish LLP, Core Technol Grp, CRESTEC Corp, CSEM, CVI Melles Griot, Dept Innovat, Ind, Sci & Res, Digital Matirx, Draiswerke, ETH Zurich, Eulitha AG, Marks & Clerk, Marubent Techno Syst Corp, Massachusetts Technol Transfer Ctr, Mat Res Soc, Merck & Co, Microfluidics, Micromerit Instrument Corp, Microtrac, MINAT 2008, Messe Stuttgart, Minus K Technol, Misonix, Lawrence Berkeley Natl Lab, Mol Foundry, Motorola, Nano Korea 2008, Nano Sci & Technol Inst`, nano tech 2009 Japan, Nano Technol Res Assoc Korea, NanoAndMore USA, NanoDynamics, NanoEurope 2008, NanoInk, Nanomotion, Nanon Imaging Ltd, NANOSENSORS, Nanosyst Initiat Munich, Nanotech No Europe 2008, nano Tox, Nano World AG`, NCI, Natl Inst Stand & Technol, NIH, Natl Nanomfg Network, Natl Nanotechnol Infrastruct, GATech, Microelect Res Ctr, Nat Nano, Nat Publishing Grp, NETZSCH Fine Particle Technol LLC, NIL Technol ApS, Novomer, NTT Adv Technol Corp, Olympus Ind Amer, OSEC, Business Network Switzerland, Oxford Instruments, Particle Technol Labs, Penn State Univ, Photon Spectra, Physik Instrumente LP, picoDrill SA, Piezo Inst, PVD Prod, Q Sense, Quantum Analyt, Raith USA, European Patent Off, Evans Analyt Grp, EXAKT Technologies, First Nano, Flow Sci, FDA, Goodwin Procter LLP, Greater Houston Partnership, Greenberg Traurig LLP, Halcyonics, Headwaters Technol Innovat LLC, Heidelberg Instruments, Hielscher USA, HighNano Analyti, Hiscock & Barclay LLP, Hitachi High Technologies Amr, Hochschule Offenburg Univ Appl Sci, HOCKMEYER Equipment Corp, HORIBA Jobin Yvon, IBU tec adv mat GmbH, IDA Ireland, ImageXpert, Inspec, Inc, IEEE, Inst Nanoscale & Quantum Sci & Technol Adv Res, IntelliSense Software Corp, Invest Germany, IOP Publishing, Italian Trade Commiss, JENOPTIK, Justus Liebig Univ, KAUST, Keithley Instruments, Kelvin Nanotechnol Ltd, Kodak, Kotobuki Ind Co, Ltd, Lake Shore Cryotron, MACRO M, NanoClay, Res Germany Land Ideas, RKS Legal Solut LLC, Dandia Natl Labs, Scottish Enterprise, SEMTech Solut, Serendip, Silvix Corp, SNS Nano Fiber Technol LLC, SoftMEMS LLC, Son & Mat, SW Nano Technologies, Specialty Coating Syst, Spectrum Labs, SPEX SamplePrep LLC, Springer, Sterne, Kessler, Goldstein & Fox PLLC, Strem Chem, Sukgyung A T Co, Lts, Surrey NanoSyst, SUSS MicroTec, Swissnanotech Pavilion, Taylor & Francis Grp LLC, CRC Press, TechConnect, Technovel Corp, Tekna Plasma Syst, Thinky Corp, Thomas Swan & Co Ltd, UGL Unicco, UK Trade & Investment, UniJet, Univ Muenster, Univ Appl Sci, Univ Duisburg, Ctr Nanointegrat Duisburg, Vecco Instruments, Wasatch Mol Inc, Weidmann Plast Technol, Whiteman Osterman & Hanna LLP, Willy A Bachofen AG, WITec GmbH, World Gold Council DE nanostructure; lithography; quasicrystal; photonic; model ID PHASE MASKS AB Three-dimensional (3D) nano-structures are vital for emerging technologies such as photonics, sensors, fuel cells, catalyst supports, and data storage. The Proximity-field nanoPatteming(1) method generates complex 3D nanostructures using a single exposure through an elastomeric "phase mask" patterned in x, y, and z, and a single development cycle. We developed a model that predicts the phase mask required to generate a specific desired nanostructure. We have compared this inverse model with experimental 3D structures to test the validity of the simulation. We have transferred the PnP fabrication process to a class-10 commercial cleamoom and scaled-up the processed area to >2000mm(2), tested photopolymer additives designed to reduce resist shrinkage, incorporated atomic layer deposition (ALD) to coat the 3D patterned resist with metals/metal-oxides improve structure robustness, and generated quasi-crystal patterned 3D nanostructures. C1 [Bogart, K. H. A.; El-Kady, I.; Grubbs, R. K.; Rahimian, K.; Sanchez, A. M.; Ellis, A. R.; Wiwi, M.; McCormick, F. B.] Sandia Natl Labs, Livermore, CA 94550 USA. RP Bogart, KHA (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA. EM khbogar@sandia.gov NR 9 TC 0 Z9 0 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 978-1-4200-8505-1 PY 2008 BP 9 EP 12 PG 4 WC Chemistry, Multidisciplinary; Engineering, Biomedical; Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Chemistry; Engineering; Science & Technology - Other Topics; Physics GA BMF51 UT WOS:000272170200003 ER PT B AU Nilson, RH Griffiths, SK AF Nilson, Robert H. Griffiths, Stewart K. BE Laudon, M Romanowicz, B TI Optimizing Multiscale Networks for Transient Transport in Nanoporous Materials SO NSTI NANOTECH 2008, VOL 3, TECHNICAL PROCEEDINGS LA English DT Proceedings Paper CT Nanotechnology Conference and Trade Show (Nanotech 2008) CY JUN 01-05, 2008 CL Boston, MA SP Accelrys Software, Ace Glass, Advance Reprod Corp, Adv Mat Technologies Pte Ltd, Agilent Technologies, AIXTRON AG, AJA Int, ALM, Amuneal Mfg Corp, ANSYS, Anton Paar USA, Appl MicroStruct, Appl Surface Technologies, Arkalon Chem Technologies, LLC, Arkema Grp, Artech House Publishers, Asemblon, ASML, Asylum Res, AZoNano, Banner & Witcoff, Beckman Coulter, Bio Nano Counsulting, BioForce Nanosci, Boneer Corp, Birck Nanotechnol Ctr, Purdue Univ, Discovery Pk, Brookhaven Instruments Corp, Buchanan Ingersoll & Rooney PC, Buhler AG, Business Week, Calif NanoSyst Inst, Capovani Brothers, Los Alamos, Ctr Integrated Nanotechnologies, Sandia Natl Labs, Ctr Integrated Nanotechnologies, Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Argonne Natl Lab, Ctr Nanoscale Mat, Cheap tubes, Clean Technol & Sustainable Ind Org, COMSOL, Cooley Godward Kronish LLP, Core Technol Grp, CRESTEC Corp, CSEM, CVI Melles Griot, Dept Innovat, Ind, Sci & Res, Digital Matirx, Draiswerke, ETH Zurich, Eulitha AG, Marks & Clerk, Marubent Techno Syst Corp, Massachusetts Technol Transfer Ctr, Mat Res Soc, Merck & Co, Microfluidics, Micromerit Instrument Corp, Microtrac, MINAT 2008, Messe Stuttgart, Minus K Technol, Misonix, Lawrence Berkeley Natl Lab, Mol Foundry, Motorola, Nano Korea 2008, Nano Sci & Technol Inst`, nano tech 2009 Japan, Nano Technol Res Assoc Korea, NanoAndMore USA, NanoDynamics, NanoEurope 2008, NanoInk, Nanomotion, Nanon Imaging Ltd, NANOSENSORS, Nanosyst Initiat Munich, Nanotech No Europe 2008, nano Tox, Nano World AG`, NCI, Natl Inst Stand & Technol, NIH, Natl Nanomfg Network, Natl Nanotechnol Infrastruct, GATech, Microelect Res Ctr, Nat Nano, Nat Publishing Grp, NETZSCH Fine Particle Technol LLC, NIL Technol ApS, Novomer, NTT Adv Technol Corp, Olympus Ind Amer, OSEC, Business Network Switzerland, Oxford Instruments, Particle Technol Labs, Penn State Univ, Photon Spectra, Physik Instrumente LP, picoDrill SA, Piezo Inst, PVD Prod, Q Sense, Quantum Analyt, Raith USA, European Patent Off, Evans Analyt Grp, EXAKT Technologies, First Nano, Flow Sci, FDA, Goodwin Procter LLP, Greater Houston Partnership, Greenberg Traurig LLP, Halcyonics, Headwaters Technol Innovat LLC, Heidelberg Instruments, Hielscher USA, HighNano Analyti, Hiscock & Barclay LLP, Hitachi High Technologies Amr, Hochschule Offenburg Univ Appl Sci, HOCKMEYER Equipment Corp, HORIBA Jobin Yvon, IBU tec adv mat GmbH, IDA Ireland, ImageXpert, Inspec, Inc, IEEE, Inst Nanoscale & Quantum Sci & Technol Adv Res, IntelliSense Software Corp, Invest Germany, IOP Publishing, Italian Trade Commiss, JENOPTIK, Justus Liebig Univ, KAUST, Keithley Instruments, Kelvin Nanotechnol Ltd, Kodak, Kotobuki Ind Co, Ltd, Lake Shore Cryotron, MACRO M, NanoClay, Res Germany Land Ideas, RKS Legal Solut LLC, Dandia Natl Labs, Scottish Enterprise, SEMTech Solut, Serendip, Silvix Corp, SNS Nano Fiber Technol LLC, SoftMEMS LLC, Son & Mat, SW Nano Technologies, Specialty Coating Syst, Spectrum Labs, SPEX SamplePrep LLC, Springer, Sterne, Kessler, Goldstein & Fox PLLC, Strem Chem, Sukgyung A T Co, Lts, Surrey NanoSyst, SUSS MicroTec, Swissnanotech Pavilion, Taylor & Francis Grp LLC, CRC Press, TechConnect, Technovel Corp, Tekna Plasma Syst, Thinky Corp, Thomas Swan & Co Ltd, UGL Unicco, UK Trade & Investment, UniJet, Univ Muenster, Univ Appl Sci, Univ Duisburg, Ctr Nanointegrat Duisburg, Vecco Instruments, Wasatch Mol Inc, Weidmann Plast Technol, Whiteman Osterman & Hanna LLP, Willy A Bachofen AG, WITec GmbH, World Gold Council DE nanoporous materials; hierarchical; network optimization; nanofluidics; nanoscale transport AB Hierarchical nanoporous materials afford the opportunity to combine the high surface area and functionality of nanopores with the superior charge/discharge characteristics of wider transport channels. In the present paper we optimize the apertures and spacing of a family of transport channels providing access to a surrounding nanoporous matrix during recharge/discharge cycles of materials intended for storage of gas or electric charge. A diffusive transport model is used to describe alternative processes of viscous gas flow, Knudsen gas flow, and ion diffusion. The coupled transport equations for the nanoporous matrix and transport channels are linearized and solved analytically for a periodic variation in external gas pressure or ion density using a separation-of-variables approach in the complex domain. Channel apertures and spacing are optimized to achieve maximum inflow/outflow from the functional matrix material for a fixed system volume. C1 [Nilson, Robert H.; Griffiths, Stewart K.] Sandia Natl Labs, Phys & Engn Sci Ctr, Livermore, CA 92007 USA. RP Nilson, RH (reprint author), Sandia Natl Labs, Phys & Engn Sci Ctr, POB 969, Livermore, CA 92007 USA. EM rhnilso@sandia.gov; skgriff@sandia.gov NR 3 TC 0 Z9 0 U1 1 U2 1 PU CRC PRESS-TAYLOR & FRANCIS GROUP PI BOCA RATON PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA BN 978-1-4200-8505-1 PY 2008 BP 257 EP 260 PG 4 WC Chemistry, Multidisciplinary; Engineering, Biomedical; Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Chemistry; Engineering; Science & Technology - Other Topics; Physics GA BMF51 UT WOS:000272170200068 ER PT J AU Burrows, TW AF Burrows, T. W. TI Nuclear Data Sheets for A=45 SO NUCLEAR DATA SHEETS LA English DT Review ID HIGH-SPIN STATES; LOW-LYING LEVELS; EVEN CALCIUM ISOTOPES; N=28 SHELL CLOSURE; INELASTIC PROTON-SCATTERING; POSITIVE-PARITY STATES; RECOIL FILTER DETECTOR; GIANT-DIPOLE-RESONANCE; HIGH ANGULAR-MOMENTUM; LIGHT F(7/2) NUCLEI AB The Interim Evaluations for A=45 based on the 1992 Nuclear Data Sheets Update for A=45 (1992Bu01, literature cutoff date of November 27, 1991) have been revised using experimental decay and reaction data received by October 30, 2007. C1 Brookhaven Natl Lab, Natl Nucl Data Ctr, Upton, NY 11973 USA. RP Burrows, TW (reprint author), Brookhaven Natl Lab, Natl Nucl Data Ctr, Upton, NY 11973 USA. EM burrows@bnl.gov NR 255 TC 11 Z9 11 U1 1 U2 4 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0090-3752 J9 NUCL DATA SHEETS JI Nucl. Data Sheets PD JAN PY 2008 VL 109 IS 1 BP 171 EP + DI 10.1016/j.nds.2007.12.002 PG 124 WC Physics, Nuclear SC Physics GA 260OY UT WOS:000253020800003 ER PT J AU Popov, E Yoder, G AF Popov, Emilian Yoder, Graydon TI IRIS pressurizer fluid dynamics and heat transfer analyses SO NUCLEAR ENGINEERING AND DESIGN LA English DT Article AB A CFD study of the IRIS Internal Pressurizer has been carried out in frame of a NERI project on Internal Pressurizer Characteristics to determine the heat transfer conditions between the pressurizer and primary circuit. FLUENT computer code has been used and a simplified two-phase model has been employed. Results are applicable for designing the pressurizer internal structures and components. (C) 2007 Elsevier B.V. All rights reserved. C1 [Popov, Emilian; Yoder, Graydon] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Popov, E (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. EM popove@ornl.gov NR 7 TC 3 Z9 3 U1 1 U2 5 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0029-5493 J9 NUCL ENG DES JI Nucl. Eng. Des. PD JAN PY 2008 VL 238 IS 1 BP 81 EP 89 DI 10.1016/j.nucengdes.2007.05.006 PG 9 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 269QD UT WOS:000253663100011 ER PT J AU Skubal, LR Chojnowski, DB Ziegler, R AF Skubal, Laura R. Chojnowski, David B. Ziegler, Raymond TI Analysis and prevention of corrosion in T-o chopper systems SO NUCLEAR ENGINEERING AND DESIGN LA English DT Article AB T-o neutron choppers at Oak Ridge National Laboratory's Spallation Neutron Source will stop prompt pulses of high-energy neutrons outside the target moderator. Choppers are cooled internally by recirculated distilled water maintained at 15 degrees C. Numerous metallic components are used to fabricate the choppers and cooling system; water contacts many of these components, establishing a corrosion cell. T. chopper system corrosion products were investigated analytically. Results showed elevated concentrations of soluble and precipitated iron and copper in cooling water. A chemical-based corrosion strategy was implemented in a T. chopper system during mechanical tests not involving system irradiation. Chemical analyses showed that a chemical corrosion inhibitor stopped system corrosion for 6 months after its introduction. Corrosion cessation was beneficial, as mechanical tests were performed without interruption from precipitate wear on mechanical parts, flowmeter blockage, or a decrease in heat transfer capabilities. Aqueous chemical changes occurring in the cooling system upon inhibitor addition are discussed. Published by Elsevier B.V. C1 [Skubal, Laura R.; Ziegler, Raymond] Argonne Natl Lab, Argonne, IL 60439 USA. [Chojnowski, David B.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Skubal, LR (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. EM l@anl.gov NR 10 TC 0 Z9 0 U1 0 U2 2 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0029-5493 J9 NUCL ENG DES JI Nucl. Eng. Des. PD JAN PY 2008 VL 238 IS 1 BP 130 EP 134 DI 10.1016/j.nucengdes.2007.05.007 PG 5 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 269QD UT WOS:000253663100016 ER PT J AU Anderson, N Hassan, Y Schultz, R AF Anderson, Nolan Hassan, Yassin Schultz, Richard TI Analysis of the hot gas flow in the outlet plenum of the very high temperature reactor using coupled RELAP5-3D system code and a CFD code SO NUCLEAR ENGINEERING AND DESIGN LA English DT Article AB The very high temperature reactor (VHTR) system behavior should be predicted during normal operating conditions and postulated accident conditions. The plant accident scenario and the passive safety behavior should be accurately predicted. Uncertainties in passive safety behavior could have large effects on the resulting system characteristics. Due to these performance issues in the VHTR, there is a need for development, testing and validation of design tools to demonstrate the feasibility of the design concepts and guide the improvement of the plant components. One of the identified design issues for the gas-cooled reactor is the thermal mixing of the coolant exiting the core into the outlet plenum. Incomplete thermal mixing may give rise to thermal stresses in the downstream components. To provide flow details, the analysis presented in this paper was performed by coupling a VHTR model generated in a thermal hydraulic systems code to a computational fluid dynamics (CFD) outlet plenum model. The outlet conditions obtained from the systems code VHTR model provide the inlet boundary conditions to the CFD outlet plenum model. By coupling the two codes in this manner, the important three-dimensional flow effects in the outlet plenum are well modeled while avoiding modeling the entire reactor with a computationally expensive CFD code. The values of pressure, mass flow rate and temperature across the coupled boundary showed differences of less than 5% in every location except for one channel. The coupling auxiliary program used in this analysis can be applied to many different cases requiring detailed three-dimensional modeling in a small portion of the domain. Published by Elsevier B.V. C1 [Schultz, Richard] Idaho Natl Lab, Idaho Falls, ID 83415 USA. [Anderson, Nolan; Hassan, Yassin] Texas A&M Univ, Dept Nucl Engn, College Stn, TX 77843 USA. RP Anderson, N (reprint author), Idaho Natl Lab, Idaho Falls, ID 83415 USA. EM Nolan.Anderson@inl.gov RI HASSAN, Yassin/J-7941-2012 NR 11 TC 10 Z9 12 U1 0 U2 3 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0029-5493 J9 NUCL ENG DES JI Nucl. Eng. Des. PD JAN PY 2008 VL 238 IS 1 BP 274 EP 279 DI 10.1016/j.nucengdes.2007.06.008 PG 6 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 269QD UT WOS:000253663100029 ER PT J AU Girard, JP Gulden, W Kolbasov, B Louzeiro-Malaquias, AJ Petti, D Rodriguez-Rodrigo, L AF Girard, J. Ph. Gulden, W. Kolbasov, B. Louzeiro-Malaquias, A. -J. Petti, D. Rodriguez-Rodrigo, L. TI Summary of the 8th IAEA technical meeting on fusion power plant safety SO NUCLEAR FUSION LA English DT Article; Proceedings Paper CT 8th IAEA Technical Meeting on Fusion Power Plant Safety CY JUL 10-13, 2006 CL Vienna, AUSTRIA SP IAEA ID TEST BLANKET MODULE; ITER; SYSTEM AB Reports were presented covering a selection of topics on the safety of fusion power plants. These included a review on licensing studies developed for ITER site preparation surveying common and non-common issues (i.e. site dependent) as lessons to a broader approach for fusion power plant safety. Several fusion power plant models, spanning from accessible technology to more advanced-materials based concepts, were discussed. On the topic related to fusion-specific technology, safety studies were reported on different concepts of breeding blanket modules, tritium handling and auxiliary systems under normal and accident scenarios' operation. The testing of power plant relevant technology in ITER was also assessed in terms of normal operation and accident scenarios, and occupational doses and radioactive releases under these testings have been determined. Other specific safety issues for fusion have also been discussed such as availability and reliability of fusion power plants, dust and tritium inventories and component failure databases. This study reveals that the environmental impact of fusion power plants can be minimized through a proper selection of low activation materials and using recycling technology helping to reduce waste volume and potentially open the route for its reutilization for the nuclear sector or even its clearance into the commercial circuit. Computational codes for fusion safety have been :presented in support of the many studies reported. The on-going work on establishing validation approaches aiming at improving the prediction capability of fusion codes has been supported by experimental results and new directions for development have been identified. Fusion standards are not available and fission experience is mostly used as the framework basis for licensing and target design for safe operation and occupational and environmental constraints. It has been argued that fusion can benefit if a specific fusion approach is implemented, in particular for materials selection which will have a large impact on waste disposal and recycling and in the real limits of radiation releases if indexed to the real impact on individuals and the environment given the differences in the types of radiation emitted by tritium when compared with the fission products. Round table sessions resulted in some common recommendations. The discussions also created the awareness of the need for a larger involvement of the IAEA in support of fusion safety standards development. C1 [Girard, J. Ph.] Int Thermonucl Expt Reactor ITER Safety Environm, St Paul Les Durance, France. [Gulden, W.] EFDA, CSU, Garching, Germany. [Kolbasov, B.] Kurchatov Inst, Nucl Fus Inst, Moscow, Russia. [Louzeiro-Malaquias, A. -J.] IAEA, A-1400 Vienna, Austria. [Petti, D.] Idaho Natl Lab, Idaho Falls, ID 83415 USA. [Rodriguez-Rodrigo, L.] CIEMAT, EURATOM Assoc, EFDA CSU Barcelona, Barcelona, Spain. RP Girard, JP (reprint author), Int Thermonucl Expt Reactor ITER Safety Environm, ITER Cadarache Joint Work Site, St Paul Les Durance, France. RI Malaquias, Artur/L-7956-2013 OI Malaquias, Artur/0000-0003-2688-1160 NR 23 TC 5 Z9 5 U1 0 U2 7 PU INT ATOMIC ENERGY AGENCY PI VIENNA PA WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIA SN 0029-5515 J9 NUCL FUSION JI Nucl. Fusion PD JAN PY 2008 VL 48 IS 1 AR 015008 DI 10.1088/0029-55t5/48/1/015008 PG 7 WC Physics, Fluids & Plasmas SC Physics GA 267BC UT WOS:000253482200009 ER PT J AU Jayakumar, RJ Austin, MA Greenfield, CM Hawkes, NC Kinsey, JE Lao, LL Parks, PB Solano, ER Taylor, TS AF Jayakumar, R. J. Austin, M. A. Greenfield, C. M. Hawkes, N. C. Kinsey, J. E. Lao, L. L. Parks, P. B. Solano, E. R. Taylor, T. S. TI Formation, sustainment and characteristics of current hole plasmas in DIII-D discharges SO NUCLEAR FUSION LA English DT Article ID TOKAMAK PLASMAS; CURRENT DRIVE; BOOTSTRAP CURRENT; TRANSPORT; JET; EQUILIBRIA; PERFORMANCE; STABILITY; PROFILES; PARTICLE AB Plasmas with zero or near-zero current density in a wide region of the core have been produced in DIII-D discharges. The discharges were obtained with early neutral beam and electron cyclotron heating (ECH) during the plasma current ramp. Wide current holes (CHs) with a near-zero field over about 23% of the plasma width and narrow CHs with a duration of up to 1.1 s (comparable to the current relaxation time) have been obtained. Equilibria and pressure profiles were obtained by including kinetic and motional Stark effect (MSE) data using the code TRANSP. Agreement between calculated and measured neutron fluxes is obtained only when the fast-ion diffusion coefficient is set to very high values which results in considerable fast-ion redistribution and a broadened pressure profile. The MSE-only equilibrium fits are in good agreement with such kinetic fits. While CHs collapse due to tearing modes, bursty MHD activity coherent with electron temperature relaxation events is observed when the CHs are sustained. Some collapse events also appear to be coincident with edge localized modes. The CH phase seems to have been limited by the no-wall beta limit. In the present set of discharges, wider CHs (steeper temperature gradients) appear to collapse at somewhat lower beta. Tearing modes are seen to cause shrinking of the CH. While early electron heating is strongly dependent on the timing and power of the neutral beam and by the ECH power, it is seen that larger neutral beam powers are correlated with wider CHs which do not decay significantly. An extensive and perhaps difficult analysis of current transport is required to check whether a neoclassical poloidal flux evolution (diffusive EMF) is either consistent with a stationary current profile or that an additional or anomalous EMF is present. C1 [Jayakumar, R. J.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Austin, M. A.] Univ Texas Austin, Austin, TX 78712 USA. [Greenfield, C. M.; Lao, L. L.; Parks, P. B.; Taylor, T. S.] Gen Atom Co, San Diego, CA 92186 USA. [Hawkes, N. C.] Jet Joint Undertaking, Abingdon OX14 3EA, Oxon, England. [Kinsey, J. E.] Lehigh Univ, Bethlehem, PA 18015 USA. [Solano, E. R.] CIEMAT Para Fus, EURATOM Assoc, Madrid 28008, Spain. RP Jayakumar, RJ (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RI Solano, Emilia/A-1212-2009 OI Solano, Emilia/0000-0002-4815-3407 NR 40 TC 4 Z9 4 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0029-5515 EI 1741-4326 J9 NUCL FUSION JI Nucl. Fusion PD JAN PY 2008 VL 48 IS 1 AR 015004 DI 10.1088/0029-5515/48/1/015004 PG 15 WC Physics, Fluids & Plasmas SC Physics GA 267BC UT WOS:000253482200005 ER PT J AU Abolins, M Adams, M Adams, T Aguilo, E Anderson, J Bagby, L Ban, J Barberis, E Beale, S Benitez, J Biehl, J Bowden, M Brock, R Bystricky, J Cwiok, M Calvet, D Cihangir, S Edmunds, D Evans, H Fantasia, C Foglesong, J Green, J Johnson, C Kehoe, R Lammers, S Laurens, P Le Du, P Mangeard, PS Mitrevski, J Mulhearn, M Mur, M Naimuddin, M Parsons, J Pawloski, G Perez, E Renkel, P Roe, A Sippach, W Stone, A Taylor, W Unalan, R Varelas, N Verzocchi, M Weerts, H Wood, DR Zhang, L Zmuda, T AF Abolins, M. Adams, M. Adams, T. Aguilo, E. Anderson, J. Bagby, L. Ban, J. Barberis, E. Beale, S. Benitez, J. Biehl, J. Bowden, M. Brock, R. Bystricky, J. Cwiok, M. Calvet, D. Cihangir, S. Edmunds, D. Evans, H. Fantasia, C. Foglesong, J. Green, J. Johnson, C. Kehoe, R. Lammers, S. Laurens, P. Le Du, P. Mangeard, P. S. Mitrevski, J. Mulhearn, M. Mur, M. Naimuddin, Md. Parsons, J. Pawloski, G. Perez, E. Renkel, P. Roe, A. Sippach, W. Stone, A. Taylor, W. Unalan, R. Varelas, N. Verzocchi, M. Weerts, H. Wood, D. R. Zhang, L. Zmuda, T. TI Design and implementation of the new D0 level-1 calorimeter trigger SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE fermilab; DZero; D0; trigger; calorimeter ID DETECTOR AB Increasing luminosity at the Fermilab Tevatron collider has led the D0 collaboration to make improvements to its detector beyond those already in place for Run IIa, which began in March 2001. One of the cornerstones of this Run IIb upgrade is a completely redesigned level-1 calorimeter trigger system. The new system employs novel architecture and algorithms to retain high efficiency for interesting events while substantially increasing rejection of background. We describe the design and implementation of the new level-1 calorimeter trigger hardware and discuss its performance during Run IIb data taking. In addition to strengthening the physics capabilities of D0, this trigger system will provide valuable insight into the operation of analogous devices to be used at LHC experiments. (c) 2007 Elsevier B.V. All rights reserved. C1 [Evans, H.; Mangeard, P. S.] Indiana Univ, Bloomington, IN 47405 USA. [Johnson, C.; Lammers, S.; Mitrevski, J.; Mulhearn, M.; Parsons, J.; Sippach, W.; Zhang, L.] Columbia Univ, New York, NY 10027 USA. [Bystricky, J.; Calvet, D.; Le Du, P.; Mur, M.; Perez, E.] CEA, DAPNIA Serv Phys Particules, Saclay, France. [Naimuddin, Md.] Univ Delhi, Delhi 110007, India. [Anderson, J.; Bagby, L.; Bowden, M.; Cihangir, S.; Foglesong, J.; Green, J.; Verzocchi, M.; Zmuda, T.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. [Adams, T.] Florida State Univ, Tallahassee, FL 32306 USA. [Abolins, M.; Benitez, J.; Biehl, J.; Brock, R.; Edmunds, D.; Laurens, P.; Unalan, R.; Weerts, H.] Michigan State Univ, E Lansing, MI 48824 USA. [Barberis, E.; Fantasia, C.; Roe, A.; Wood, D. R.] Northeastern Univ, Boston, MA 02215 USA. [Pawloski, G.] Rice Univ, Houston, TX 77005 USA. [Kehoe, R.; Renkel, P.] So Methodist Univ, Dallas, TX 75275 USA. [Cwiok, M.] Univ Coll Dublin, Dublin 2, Ireland. [Aguilo, E.] Univ Alberta, Edmonton, AB, Canada. [Adams, M.; Stone, A.; Varelas, N.] Univ Illinois, Chicago, IL 60607 USA. [Aguilo, E.; Beale, S.; Taylor, W.] York Univ, Toronto, ON M3J 2R7, Canada. RP Evans, H (reprint author), Indiana Univ, Bloomington, IN 47405 USA. EM hgevans@indiana.edu OI Evans, Harold/0000-0003-2183-3127 NR 24 TC 87 Z9 87 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD JAN 1 PY 2008 VL 584 IS 1 BP 75 EP 97 DI 10.1016/j.nima.2007.10.014 PG 23 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 254AQ UT WOS:000252559100006 ER PT J AU Obreshkov, E Albrand, S Collot, J Fulachier, J Lambert, F Adam-Bourdarios, C Arnault, C Garonne, V Rousseau, D Schaffer, A von der Schmitt, H De Salvo, A Kabachenko, V Ren, Z Qing, D Nzuobontane, E Sherwood, P Simmons, B George, S Rybkine, G Lloyd, S Undrus, A Youssef, S Quarrie, D Hansl-Kozanecka, T Luehring, F Moyse, E Goldfarb, S AF Obreshkov, E. Albrand, S. Collot, J. Fulachier, J. Lambert, F. Adam-Bourdarios, C. Arnault, C. Garonne, V. Rousseau, D. Schaffer, A. von der Schmitt, H. De Salvo, A. Kabachenko, V. Ren, Z. Qing, Di Nzuobontane, E. Sherwood, P. Simmons, B. George, S. Rybkine, G. Lloyd, S. Undrus, A. Youssef, S. Quarrie, D. Hansl-Kozanecka, T. Luehring, F. Moyse, E. Goldfarb, S. TI Organization and management of ATLAS offline software releases SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE software management; release management; software verification; distribution; documentation AB ATLAS is one of the largest collaborations ever undertaken in the physical sciences. This paper explains how the software infrastructure is organized to manage collaborative code development by around 300 developers with varying degrees of expertise and situated in 30 different countries. ATLAS offline software currently consists of about 2 million source lines of code contained in 6800 C ++ classes, organized in more than 1000 packages. We will describe how releases of the offline ATLAS software are built, validated and subsequently deployed to remote sites. Several software management tools have been used, the majority of which are not ATLAS specific; we will show how they have been integrated. (c) 2007 Elsevier B.V. All rights reserved. C1 [Hansl-Kozanecka, T.] CEA, DAPNIA, Gif Sur Yvette, France. [Obreshkov, E.] Bulgarian Acad Sci, INRNE, BG-1040 Sofia, Bulgaria. [Albrand, S.; Collot, J.; Fulachier, J.; Lambert, F.] CNRS, IN2P3, LPSC, Grenoble, France. [Adam-Bourdarios, C.; Arnault, C.; Garonne, V.; Rousseau, D.; Schaffer, A.] Univ Paris 11, CNRS, IN2P3, LAL, F-91405 Orsay, France. [von der Schmitt, H.] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany. [De Salvo, A.] Ist Nazl Fis Nucl, Rome 1, Italy. [Kabachenko, V.] Inst High Energy Phys, Protvino, Russia. [Ren, Z.; Qing, Di] Acad Sinica, Inst Phys, Taipei, Taiwan. [Nzuobontane, E.; Sherwood, P.; Simmons, B.] UCL, London, England. [George, S.; Rybkine, G.] Royal Holloway Univ London, London, England. [Lloyd, S.] Queen Mary Univ London, London, England. [Undrus, A.] BNL, Upton, NY USA. [Youssef, S.] Boston Univ, Boston, MA 02215 USA. [Quarrie, D.] Univ Calif Berkeley, Canc Res Lab, Berkeley, CA 94720 USA. [Hansl-Kozanecka, T.] Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA. [Luehring, F.] Indiana Univ, Bloomington, IN 47405 USA. [Moyse, E.] Univ Massachusetts, Amherst, MA 01003 USA. [Goldfarb, S.] Univ Michigan, Ann Arbor, MI 48109 USA. RP Hansl-Kozanecka, T (reprint author), CEA, DAPNIA, Gif Sur Yvette, France. EM Traudl.Hansl-Kozanecki@cern.ch NR 1 TC 18 Z9 18 U1 2 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD JAN 1 PY 2008 VL 584 IS 1 BP 244 EP 251 DI 10.1016/j.nima.2007.10.002 PG 8 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 254AQ UT WOS:000252559100022 ER PT J AU Andersen, HH Breese, M Rehn, L Trautmann, C Vickridge, I AF Andersen, Hans Henrik Breese, Mark Rehn, Lynn Trautmann, Christina Vickridge, Ian TI NIMB Editorial for 2008 SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Editorial Material C1 [Andersen, Hans Henrik] Niels Bohr Inst, DK-2100 Copenhagen O, Denmark. [Breese, Mark] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore. [Rehn, Lynn] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. [Trautmann, Christina] Mat Forsch, Gesell Schwerionenforsch, D-64291 Darmstadt, Germany. [Vickridge, Ian] Univ Paris 06, CNRS, UMR 7588, Inst NanoSci Paris, Paris, France. RP Andersen, HH (reprint author), Niels Bohr Inst, Blegdamsvej 17, DK-2100 Copenhagen O, Denmark. EM nimb@fys.ku.dk; phymbhb@nus.edu.sg; rchn@anl.gov; nimb@gsi.de; nimb@insp.jussieu.fr RI Vickridge, Ian/E-4266-2010 NR 0 TC 0 Z9 0 U1 0 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2008 VL 266 IS 1 BP 1 EP 1 DI 10.1016/j.nimb.2007.11.032 PG 1 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 261LN UT WOS:000253080300001 ER PT J AU Nakao, N Taniguchi, S Roesler, S Brugger, M Hagiwara, M Vincke, H Khater, H Prinz, AA Rokni, SH Kosako, K AF Nakao, N. Taniguchi, S. Roesler, S. Brugger, M. Hagiwara, M. Vincke, H. Khater, H. Prinz, A. A. Rokni, S. H. Kosako, K. TI Measurement and calculation of high-energy neutron spectra behind shielding at the CERF 120 GeV/c hadron beam facility SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article DE neutron energy spectra; concrete shield; iron shield; accelerator; CERF; hadron beam; NE213; scintillator; unfolding; response function; benchmark; Monte Carlo; FLUKA; MARS; PHITS ID ORGANIC LIQUID SCINTILLATOR; 68-MEV PROTONS; TRANSMISSION; 43-MEV; RANGE AB Neutron energy spectra were measured behind the lateral shield of the CERF (CERN-EU High Energy Reference Field) facility at CERN with a 120 GeV/c positive hadron beam (a mixture of mainly protons and pions) on a cylindrical copper target (7-cm diameter by 50-cm long). An NE213 organic liquid scintillator (12.7-cm diameter by 12.7-cm long) was located at various longitudinal positions behind shields of 80- and 160-cm thick concrete and 40-cm thick iron. The measurement locations cover an angular range with respect to the beam axis between 13 and 133 degrees. Neutron energy spectra in the energy range between 32 MeV and 380 MeV were obtained by unfolding the measured pulse height spectra with the detector response functions which have been verified in the neutron energy range up to 380 MeV in separate experiments. Since the source term and experimental geometry in this experiment are well characterized and simple and results are given in the form of energy spectra, these experimental results are very useful as benchmark data to check the accuracies of simulation codes and nuclear data. Monte Carlo simulations of the experimental set up were performed with the FLUKA, MARS and PHITS codes. Simulated spectra for the 80-cm thick concrete often agree within the experimental uncertainties. On the other hand, for the 160-cm thick concrete and iron shield differences are generally larger than the experimental uncertainties, yet within a factor of 2. Based on source term simulations, observed discrepancies among simulations of spectra outside the shield can be partially explained by differences in the high-energy hadron production in the copper target. (C) 2007 Elsevier B.V. All rights reserved. C1 [Nakao, N.; Vincke, H.; Khater, H.; Prinz, A. A.; Rokni, S. H.] Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. [Roesler, S.; Brugger, M.] CERN, CH-1211 Geneva 23, Switzerland. [Hagiwara, M.] Tohoku Univ, CYRIC, Sendai, Miyagi 9808579, Japan. [Kosako, K.] Shimizu Corp, Tokyo 135, Japan. RP Nakao, N (reprint author), Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. EM nakao@fnal.gov NR 21 TC 3 Z9 3 U1 1 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD JAN PY 2008 VL 266 IS 1 BP 93 EP 106 DI 10.1016/j.nimb.2007.09.043 PG 14 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 261LN UT WOS:000253080300016 ER PT J AU Tuchin, K AF Tuchin, Kirill TI Forward hadron production in high energy pA collisions: From RHIC to LHC SO NUCLEAR PHYSICS A LA English DT Article ID COLOR GLASS CONDENSATE; HEAVY-QUARK PRODUCTION; SMALL-X; BFKL POMERON; NONLINEAR EVOLUTION; PARTON SATURATION; NUCLEI; REGION; QCD; SCATTERING AB We present a calculation of inclusive pi, D and B mesons production at RHIC and LHC energies based upon the KKT model of gluon saturation. We discuss dependence of the nuclear modification factor on rapidity, centrality and transverse momentum. (c) 2007 Elsevier B.V. All rights reserved. C1 [Tuchin, Kirill] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. [Tuchin, Kirill] RIKEN, Brookhaven Natl Lab, Res Ctr, Upton, NY 11973 USA. RP Tuchin, K (reprint author), Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. EM tuchin@iastate.edu NR 49 TC 25 Z9 25 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD JAN 1 PY 2008 VL 798 IS 1-2 BP 61 EP 73 DI 10.1016/j.nuclphysa.2007.10.008 PG 13 WC Physics, Nuclear SC Physics GA 257ZA UT WOS:000252837000004 ER PT S AU Bonatsos, D McCutchan, EA Casten, RF AF Bonatsos, Dennis McCutchan, E. A. Casten, R. F. BE Boztosun, I Balantekin, AB TI 0(+) states in the large boson number limit of the Interacting Boson Approximation model SO NUCLEAR PHYSICS AND ASTROPHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT Conference on Nuclear Physic and Astrophysics - From Stable Beams to Exotic Nucle CY JUN 25-30, 2008 CL Cappadocia, TURKEY SP Erciyes Univ, Bozok Univ, Nigde Univ, Istanbul Univ, Turish Atom Energy Author, Turish Acad Sci, Sci & Technol Res Council Turkey, Univ Wisconsin DE Interacting Boson Approximation model; geometric collective model; shape/phase transitions; order parameter ID CRITICAL-POINT SYMMETRY; PHASE-TRANSITIONS; NUCLEI; REGION; X(5) AB Studies of the Interacting Boson Approximation (IBA) model for large boson numbers have been triggered by the discovery of shape/phase transitions between different limiting symmetries of the model. These transitions become sharper in the large boson number limit, revealing previously unnoticed regularities; which also survive to a large extent for finite boson numbers, corresponding to valence nucleon pairs in collective nuclei. It is shown that energies of 0(n)(+) states grow linearly with their ordinal number n in all three limiting symmetries of IBA [U(5), SU(3), and O(6)]. Furthermore, it is proved that the narrow transition region separating the symmetry triangle of the IBA into a spherical and a deformed region is described quite well by the degeneracies E(0(2)(+)) = E(6(1)(+)), E(0(3)(+)) = E(10(1)(+)), E(0(4)(+)) = E(14(1)(+)), while the energy ratio E(6(1)(+))/E(0(2)(+)) turns out to be a simple, empirical, easy-to-measure effective order parameter, distinguishing between first- and second-order transitions. The energies of 0(n)(+) states near the point of the first order shape/phase transition between U(5) and SU(3) are shown to grow as n(n+3), in agreement with the rule dictated by the relevant critical point symmetries resulting in the framework of special solutions of the Bohr Hamiltonian. The underlying partial dynamical symmetries and quasi-dynamical symmetries are also discussed. C1 [Bonatsos, Dennis] Natl Ctr Sci Res Demokritos, Inst Nucl Phys, GR-15310 Athens, Greece. [McCutchan, E. A.] Div Phys, Argonne Natl Lab, Argonne, IL 60439 USA. [Casten, R. F.] Yale Univ, Wright Nucl Struct Lab, New Haven, CT 06520 USA. RP Bonatsos, D (reprint author), Natl Ctr Sci Res Demokritos, Inst Nucl Phys, GR-15310 Athens, Greece. FU U.S. DOE [DE-FG02-9lER-40609, DE-AC02-06CH11357] FX Work supported in part U.S. DOE Grant No. DE-FG02-9lER-40609 and under Contract DE-AC02-06CH11357. NR 31 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 978-0-7354-0603-2 J9 AIP CONF PROC PY 2008 VL 1072 BP 40 EP + PG 2 WC Astronomy & Astrophysics; Physics, Nuclear SC Astronomy & Astrophysics; Physics GA BIQ20 UT WOS:000261875700007 ER PT S AU Ozen, C Langanke, K Martinez-Pinedo, G Dean, DJ AF Oezen, C. Langanke, K. Martinez-Pinedo, G. Dean, D. J. BE Boztosun, I Balantekin, AB TI Parity-projected shell model Monte Carlo level densities for medium-mass nuclei SO NUCLEAR PHYSICS AND ASTROPHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT Conference on Nuclear Physic and Astrophysics - From Stable Beams to Exotic Nucle CY JUN 25-30, 2008 CL Cappadocia, TURKEY SP Erciyes Univ, Bozok Univ, Nigde Univ, Istanbul Univ, Turish Atom Energy Author, Turish Acad Sci, Sci & Technol Res Council Turkey, Univ Wisconsin DE shell model; Monte Carlo methods; level density; parity AB We investigate the effects of single-particle structure and pairing on the equilibration of positive and negative-parity level densities for the even-even nuclei Fe-58,Fe-62,Fe-66 and Ni-58 and the odd-A nuclei Ni-59 and Fe-65. Calculations are performed using the shell model Monte Carlo method in the complete fp-gds shell-model space using a pairing(+) quadrupole type residual interaction. We find for the even-even nuclei that the positive-parity states dominate at low excitation energies due to strong pairing correlations. At excitation energies at which pairs are broken, single-particle structure of these nuclei is seen to play the decisive role for the energy dependence of the ratio of negative-to-positive parity level densities. We also find that equilibration energies are noticeably lower for the odd-A nuclei Ni-59 and Fe-65 than for the neighboring even-even nuclei Ni-58 and Fe-66. C1 [Oezen, C.] Yale Univ, Sloane Phys Lab, Ctr Theoret Phys, New Haven, CT 06520 USA. [Oezen, C.; Langanke, K.; Martinez-Pinedo, G.] Gesellsch Schwerionenforsch GSI, Darmstadt, Germany. [Langanke, K.] Tech Univ Darmstadt, Inst Kernphys, Darmstadt, Germany. [Dean, D. J.] Oak Ridge Natl Lab, Phys Div, Oak Ridge, TN USA. RP Ozen, C (reprint author), Yale Univ, Sloane Phys Lab, Ctr Theoret Phys, New Haven, CT 06520 USA. RI Martinez-Pinedo, Gabriel/A-1915-2013; Ozen, Cem/C-6868-2016 OI Martinez-Pinedo, Gabriel/0000-0002-3825-0131; Ozen, Cem/0000-0001-6388-9175 FU U.S. Department of Energy [DE-AC05-00OR22725, DE-FG-0291-ER-40608]; [National Center for Computational Sciences at ORNL] FX Oak Ridge National Laboratory is managed by UT-Battelle, LLC, for the U.S. Department of Energy under contract DE-AC05-00OR22725. Computational resources were provided by the National Center for Computational Sciences at ORNL. This work is supported in part by the U.S. DOE grant No. DE-FG-0291-ER-40608. NR 13 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 978-0-7354-0603-2 J9 AIP CONF PROC PY 2008 VL 1072 BP 215 EP + PG 2 WC Astronomy & Astrophysics; Physics, Nuclear SC Astronomy & Astrophysics; Physics GA BIQ20 UT WOS:000261875700036 ER PT S AU Dikmen, E Lisetskiy, AF Barrett, BR Navratil, P Vary, JP AF Dikmen, E. Lisetskiy, A. F. Barrett, B. R. Navratil, P. Vary, J. P. BE Boztosun, I Balantekin, AB TI Effective Interactions from No Core Shell Model SO NUCLEAR PHYSICS AND ASTROPHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT Conference on Nuclear Physic and Astrophysics - From Stable Beams to Exotic Nucle CY JUN 25-30, 2008 CL Cappadocia, TURKEY SP Erciyes Univ, Bozok Univ, Nigde Univ, Istanbul Univ, Turish Atom Energy Author, Turish Acad Sci, Sci & Technol Res Council Turkey, Univ Wisconsin DE NCSM; ab-initio; effective interactions AB We construct the many-body effective Hamiltonian for pf-shell by carrying out 2h Omega NCSM calculations at the 2-body cluster level. We demonstrate how the effective Hamiltonian derived from realistic nucleon-nucleon (NN) potentials for the 2h Omega NCSM space should be modified to properly account for the many-body correlations produced by truncating to the major pf-shell. We obtain two-body effective interactions for the pf-shell by using direct projection and use them to reproduce the results of large scale NCSM for other light Ca isotopes. C1 [Dikmen, E.] Suleyman Demirel Univ, Dept Phys, TR-32200 Isparta, Turkey. [Lisetskiy, A. F.; Barrett, B. R.] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA. [Navratil, P.] Lawrence Livermore Natl Lab, POB 5508, Livermore, CA 94551 USA. [Vary, J. P.] Iowa State Univ Sci & Technol, Dept Phys & Astron, Ames, IA 50011 USA. RP Dikmen, E (reprint author), Suleyman Demirel Univ, Dept Phys, TR-32200 Isparta, Turkey. FU NSF [PHY-0555396]; Scientific and Technological Council of Turkey; TUBITAK-BIDEB; TUBITAK [105T092]; LLNL [DE-AC52-07NA27344] FX This work was supported in part by NSF grant PHY-0555396, the Scientific and Technological Council of Turkey, TUBITAK-BIDEB and TUBITAK 105T092, and prepared by LLNL under Contract DE-AC52-07NA27344. 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 978-0-7354-0603-2 J9 AIP CONF PROC PY 2008 VL 1072 BP 233 EP + PG 2 WC Astronomy & Astrophysics; Physics, Nuclear SC Astronomy & Astrophysics; Physics GA BIQ20 UT WOS:000261875700040 ER PT J AU Klein, SR AF Klein, Spencer R. TI Recent results from RHIC & some lessons for cosmic-ray physicists SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS LA English DT Proceedings Paper CT 14th International Symposium on Very High Energy Cosmic Ray Interactions CY AUG 15-22, 2006 CL Weihai, PEOPLES R CHINA SP Shandong Univ, Chinese Acad Sci, Inst High Energy Phys, IUPAP, Cosm Ray Commiss, IUPAP, Emuls Chamber Comm ID DETECTOR; COLLISIONS; LHC AB The Relativistic Heavy Ion Collider (RHIC) studies nuclear matter under a variety of conditions. Cold nuclear matter is probed with deuteron-gold collisions, while hot nuclear matter (possibly a quark-gluon plasma (QGP)) is created in heavy-ion collisions. The distribution of spin in polarized nucleons is measured with polarized proton collisions, and photoproduction is studied using the photons that accompany heavy nuclei. The deuteron-gold data shows less forward particle production than would be expected from a superposition of pp collisions, as expected due to saturation /shadowing. Particle production in AA collisions is well described by a model of an expanding fireball in thermal equilibrium. Strong hydrodynamic flow and jet quenching shows that the the produced matter interacts very strongly. These phenomena are consistent with new non-perturbative interactions near the transition temperature to the QGP. This writeup will discuss these results, and their implications for cosmic-ray physicists. C1 Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA. RP Klein, SR (reprint author), Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA. EM srklein@lbl.gov NR 32 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5632 EI 1873-3832 J9 NUCL PHYS B-PROC SUP JI Nucl. Phys. B-Proc. Suppl. PD JAN PY 2008 VL 175 BP 9 EP 16 DI 10.1016/j.nuclphysbps.2007.10.002 PG 8 WC Physics, Particles & Fields SC Physics GA 259YC UT WOS:000252975800004 ER PT J AU Raja, R AF Raja, Rajendran TI The Main Injector Particle Physics Experiment (MIPP FNAL E-907) at Fermilab - status and plans SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS LA English DT Proceedings Paper CT 14th International Symposium on Very High Energy Cosmic Ray Interactions CY AUG 15-22, 2006 CL Weihai, PEOPLES R CHINA SP Shandong Univ, Chinese Acad Sci, Inst High Energy Phys, IUPAP, Cosm Ray Commiss, IUPAP, Emuls Chamber Comm ID DETECTOR; CHAMBERS AB We describe the status of the Main Injector particle production Experiment (MIPP) at Fermilab which has to date acquired 18 million events of particle interactions using (5 GeV/c-120 GeV/c) pi(+/-), K-+/- and p(+/-) beams on various targets. We describe plans to upgrade the data acquisition speed of MIPP to make it run 100 times faster which will enable us to obtain particle production data of unprecdented quality and statistics on a wide variety of nuclear targets including nitrogen which is of importance to cosmic ray physics. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Raja, R (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. NR 7 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5632 J9 NUCL PHYS B-PROC SUP JI Nucl. Phys. B-Proc. Suppl. PD JAN PY 2008 VL 175 BP 17 EP 24 DI 10.1016/j.nuclphysbps.2007.10.003 PG 8 WC Physics, Particles & Fields SC Physics GA 259YC UT WOS:000252975800005 ER PT J AU Battistoni, G Cerutti, F Empl, A Fasso, A Ferrari, A Gadioli, E Garzelli, MV Muraro, S Pelliccioni, M Pinsky, LS Ranft, J Roesler, S Sala, PR Villari, R AF Battistoni, G. Cerutti, F. Empl, A. Fasso, A. Ferrari, A. Gadioli, E. Garzelli, M. V. Muraro, S. Pelliccioni, M. Pinsky, L. S. Ranft, J. Roesler, S. Sala, P. R. Villari, R. TI Hadronic models for cosmic ray physics: the FLUKA code SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS LA English DT Proceedings Paper CT 14th International Symposium on Very High Energy Cosmic Ray Interactions CY AUG 15-22, 2006 CL Weihai, PEOPLES R CHINA SP Shandong Univ, Chinese Acad Sci, Inst High Energy Phys, IUPAP, Cosm Ray Commiss, IUPAP, Emuls Chamber Comm ID MONTE-CARLO CALCULATION; DUAL PARTON MODEL; HIGH-ENERGY; NUCLEUS INTERACTIONS; RESIDUAL NUCLEI; FRAGMENTATION; SIMULATION; ALTITUDES; QUARK AB FLUKA is a general purpose Monte Carlo transport and interaction code used for fundamental physics and for a wide range of applications. These include cosmic ray physics (muons, neutrinos, extensive air showers, underground physics), both for basic research and applied studies in space and atmospheric flight dosimetry and radiation damage. A review of the hadronic models available in FLUKA and relevant for the description of cosmic ray air showers is presented in this paper. Recent improvements concerning these models are discussed. The FLUKA capabilities in the simulation of the formation and propagation of EM and hadronic showers in the terrestrial atmosphere are shown. C1 [Battistoni, G.; Gadioli, E.; Garzelli, M. V.; Muraro, S.; Sala, P. R.] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy. [Battistoni, G.; Gadioli, E.; Garzelli, M. V.; Muraro, S.; Sala, P. R.] Univ Milan, Dip Fis, I-20133 Milan, Italy. [Cerutti, F.; Ferrari, A.; Roesler, S.] CERN, CH-1211 Geneva, Switzerland. [Empl, A.; Pinsky, L. S.] Univ Houston, Dept Phys, Houston, TX 77204 USA. [Fasso, A.] SLAC, Stanford, CA 94025 USA. [Pelliccioni, M.] Ist Nazl Fis Nucl, I-00044 Frascati, Rome, Italy. [Ranft, J.] Univ Siegen, D-57068 Siegen, Germany. [Villari, R.] ENEA, I-00044 Frascati, Rome, Italy. RP Garzelli, MV (reprint author), Ist Nazl Fis Nucl, Sez Milano, Via Celoria 16, I-20133 Milan, Italy. RI Battistoni, Giuseppe/B-5264-2012 OI Battistoni, Giuseppe/0000-0003-3484-1724 NR 25 TC 6 Z9 6 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5632 J9 NUCL PHYS B-PROC SUP JI Nucl. Phys. B-Proc. Suppl. PD JAN PY 2008 VL 175 BP 88 EP 95 DI 10.1016/j.nuclphysbps.2007.10.013 PG 8 WC Physics, Particles & Fields SC Physics GA 259YC UT WOS:000252975800015 ER PT J AU Ebisuzaki, T Uehara, Y Ohmori, H Kawai, K Kawasaki, Y Sato, M Takizawa, Y Bertaina, ME Kajino, F Sawabe, T Inoue, K Sasaki, A Sakata, M Yamamoto, Y Nagano, M Inoue, N Shibata, T Sakaki, N Uchihori, Y Takahashi, Y Shimizu, H Arai, Y Kurihara, Y Fujimoto, H Yoshida, S Mizumoto, Y Inoue, S Asano, K Sugiyama, T Watanabe, J Ikeda, H Suzuki, M Imamura, T Yano, H Murakami, T Yonetoku, D Itow, Y Taguchi, M Nagata, M Nagataki, S Abe, S Tajima, T Adams, JH Mitchell, S Christl, MJ Watts, J English, A Takahashi, Y Pitalo, K Hadaway, J Geary, J Readon, P Crawford, H Pennypacker, C Arisaka, K Cline, D Gorodetsky, P Salin, P Patzark, T Maurissen, A Valentin, M AF Ebisuzaki, T. Uehara, Y. Ohmori, H. Kawai, K. Kawasaki, Y. Sato, M. Takizawa, Y. Bertaina, M. E. Kajino, F. Sawabe, T. Inoue, K. Sasaki, A. Sakata, M. Yamamoto, Y. Nagano, M. Inoue, N. Shibata, T. Sakaki, N. Uchihori, Y. Takahashi, Y. Shimizu, H. Arai, Y. Kurihara, Y. Fujimoto, H. Yoshida, S. Mizumoto, Y. Inoue, S. Asano, K. Sugiyama, T. Watanabe, J. Ikeda, H. Suzuki, M. Imamura, T. Yano, H. Murakami, T. Yonetoku, D. Itow, Y. Taguchi, M. Nagata, M. Nagataki, S. Abe, S. Tajima, T. Adams, J. H. Mitchell, S. Christl, M. J. Watts, J., Jr. English, A. Takahashi, Y. Pitalo, K. Hadaway, J. Geary, J. Readon, P. Crawford, H. Pennypacker, C. Arisaka, K. Cline, D. Gorodetsky, P. Salin, P. Patzark, T. Maurissen, A. Valentin, M. TI The JEM-EUSO project: Observing extremely high energy cosmic rays and neutrinos from the international space station SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS LA English DT Proceedings Paper CT 14th International Symposium on Very High Energy Cosmic Ray Interactions CY AUG 15-22, 2006 CL Weihai, PEOPLES R CHINA SP Shandong Univ, Chinese Acad Sci, Inst High Energy Phys, IUPAP, Cosm Ray Commiss, IUPAP, Emuls Chamber Comm AB The motivations, characteristics and potential performance of the JEM-EUSO project are briefly discussed. C1 [Sawabe, T.; Inoue, K.; Sasaki, A.; Sakata, M.; Yamamoto, Y.; Nagano, M.] Konan Univ, Dept Phys, Kobe, Hyogo 6588501, Japan. [Nagano, M.] Fukui Univ Technol, Dept Appl Phys & Chem, Fukui 9108505, Japan. [Inoue, N.] Saitama Univ, Dept Phys, Saitama, Saitama 3388570, Japan. [Shibata, T.; Sakaki, N.] Aoyama Gakuin Univ, Dept Math & Phys, Sagamihara, Kanagawa 2298558, Japan. [Uchihori, Y.] Natl Inst Radiol Sci, Chiba 2638555, Japan. [Takahashi, Y.] Tohoku Univ, Dept Geophys, Sendai, Miyagi 9808578, Japan. [Shimizu, H.; Arai, Y.; Kurihara, Y.] High Energy Accelerator Res Org, KEK, Tsuchiura, Ibaraki 3050801, Japan. [Yoshida, S.] Chiba Univ, Particle Phys Lab, Chiba 2638522, Japan. [Mizumoto, Y.; Inoue, S.; Asano, K.; Sugiyama, T.; Watanabe, J.] Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan. [Ikeda, H.; Suzuki, M.; Imamura, T.; Yano, H.] JAXA, Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan. [Murakami, T.; Yonetoku, D.] Kanazawa Univ, Dept Phys, Kanazawa, Ishikawa 9201192, Japan. [Itow, Y.] Nagoya Univ, Solar Terr Environm Lab, Nagoya, Aichi 4648601, Japan. [Taguchi, M.] Natl Inst Polar Res, Tokyo 1738515, Japan. [Nagata, M.; Abe, S.] Kobe Univ, Dept Comp & Syst Engn, Kobe, Hyogo 6578501, Japan. [Nagataki, S.] Kyoto Univ, Fundamental Phys Res Inst, Kyoto 6068502, Japan. [Tajima, T.] Japan Atom Energy Res Inst, Adv Quantum Opt Inst, Kizu, Kyoto 6190215, Japan. [Adams, J. H.; Mitchell, S.; Christl, M. J.; Watts, J., Jr.; English, A.] NASA, Marshall Space Flight Ctr, Huntsville, AL 35812 USA. [Takahashi, Y.; Pitalo, K.; Hadaway, J.; Geary, J.; Readon, P.] Univ Alabama, Dept Phis, Huntsville, AL 35899 USA. [Crawford, H.; Pennypacker, C.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Arisaka, K.; Cline, D.] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA. [Gorodetsky, P.; Salin, P.; Patzark, T.] Coll France, CNRS, IN2P3, F-75005 Paris, France. [Maurissen, A.; Valentin, M.] Observ Cantonal Neuchatel, CH-2000 Neuchatel, Switzerland. [Ebisuzaki, T.; Uehara, Y.; Ohmori, H.; Kawai, K.; Kawasaki, Y.; Sato, M.; Takizawa, Y.; Bertaina, M. E.; Takahashi, Y.] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan. RP Bertaina, ME (reprint author), Univ Turin, Dipartimento Fis Gen, I-10125 Turin, Italy. EM bertaina@to.infn.it OI Bertaina, Mario Edoardo/0000-0003-1069-1397 NR 4 TC 33 Z9 33 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5632 J9 NUCL PHYS B-PROC SUP JI Nucl. Phys. B-Proc. Suppl. PD JAN PY 2008 VL 175 BP 237 EP 240 DI 10.1016/j.nuclphysbps.2007.11.005 PG 4 WC Physics, Particles & Fields SC Physics GA 259YC UT WOS:000252975800043 ER PT J AU Grupen, C Hashim, NO Jost, B Maciuc, F Luitz, S Mailov, A Miiller, AS Putzer, A Rensch, B Sanderh, HG Schmeling, S Schmelling, M Tcaciuc, R Wachsmuth, H Ziegler, T Zuber, K AF Grupen, C. Hashim, N. -O. Jost, B. Maciuc, F. Luitz, S. Mailov, A. Miiller, A. -S. Putzer, A. Rensch, B. Sanderh, H. -G. Schmeling, S. Schmelling, M. Tcaciuc, R. Wachsmuth, H. Ziegler, Th. Zuber, K. TI Cosmic ray results from the CosmoALEPH experiment SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS LA English DT Proceedings Paper CT 14th International Symposium on Very High Energy Cosmic Ray Interactions CY AUG 15-22, 2006 CL Weihai, PEOPLES R CHINA SP Shandong Univ, Chinese Acad Sci, Inst High Energy Phys, IUPAP, Cosm Ray Commiss, IUPAP, Emuls Chamber Comm ID LEP AB CosmoALEPH is an experiment operated in conjunction with the ALEPH detector. The ALEPH experiment took data from 1989 until the year 2000 at the Large Electron Positron Collider (LEP) at CERN. It provides, among others, high resolution tracking and calorimetry. CosmoALEPH used this e(+)e(-) detector for cosmic ray studies. In addition, six scintillator telescopes were installed in the ALEPH pit and the LEP tunnel. The whole experiment operated underground at a vertical depth of 320 meter water equivalent. Data from ALEPH and the scintillator telescopes provide informaton on the lateral distribution of energetic cosmic ray muons in extensive air showers. The decoherence curve of these remnant air shower muons is sensitive to the chemical composition of primary cosmic rays and to the interaction characteristics of energetic hadrons in the atmosphere. An attempt is made to extract the various interdependencies in describing the propagation of primary and secondary cosmic rays through the atmosphere and the rock overburden, and comparing the data with results from Monte Carlo (MC) calculations. Results on the multiplicity distributions of remnant air shower muons in ALEPH are also compared with expectations based on MC simulations. Data on the cosmic: ray muon spectrum and charge ratio up to momenta of 3TeV/c as obtained with the time projection chamber in ALEPH's strong magnetic field are presented. The large number of events also allowed to unambiguously observe muon tridents and to estimate the cross section for this process. C1 [Grupen, C.; Hashim, N. -O.; Mailov, A.; Tcaciuc, R.] Univ Siegen, Fachbereich Phys, D-57068 Siegen, Germany. [Hashim, N. -O.; Maciuc, F.; Schmelling, M.] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany. [Hashim, N. -O.; Maciuc, F.; Schmelling, M.] CERN, CH-1211 Geneva, Switzerland. [Luitz, S.] SLAC, Menlo Pk, CA 94025 USA. [Miiller, A. -S.] Forschungszentrum Karlsruhe, Ins Synchrotronstrahlung, D-76021 Karlsruhe, Germany. [Putzer, A.] Univ Heidelberg, Kirchhoff Inst Phys, D-69120 Heidelberg, Germany. [Rensch, B.] Erphi Elect GmbH, D-83607 Holzkirchen, Germany. [Sanderh, H. -G.] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany. [Zuber, K.] Univ Sussex, Brighton BN1 9QH, E Sussex, England. RP Grupen, C (reprint author), Univ Siegen, Fachbereich Phys, D-57068 Siegen, Germany. RI MACIUC, Florin/B-9903-2016 OI MACIUC, Florin/0000-0001-6651-9436 NR 14 TC 3 Z9 3 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5632 J9 NUCL PHYS B-PROC SUP JI Nucl. Phys. B-Proc. Suppl. PD JAN PY 2008 VL 175 BP 286 EP 293 DI 10.1016/j.nuclphysbps.2007.11.014 PG 8 WC Physics, Particles & Fields SC Physics GA 259YC UT WOS:000252975800053 ER PT J AU Klein, SR AF Klein, Spencer R. TI Studying high p(T) muons in cosmic-ray air showers SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS LA English DT Proceedings Paper CT 14th International Symposium on Very High Energy Cosmic Ray Interactions CY AUG 15-22, 2006 CL Weihai, PEOPLES R CHINA SP Shandong Univ, Chinese Acad Sci, Inst High Energy Phys, IUPAP, Cosm Ray Commiss, IUPAP, Emuls Chamber Comm AB Most cosmic-ray air shower arrays have focused on detecting electromagnetic shower particles and low energy muons. A few groups (most notably MACRO + EASTOP and SPASE + AMANDA) have studied the high energy muon component of showers. However, these experiments had small solid angles, and did not study muons far from the core. The IceTop + IceCube combination, with its 1 km(2) muon detection area can study muons far from the shower core. IceCube can measure their energy loss (dE/dx), and hence their energy. With the energy, and the known distribution of production heights, the transverse momentum (p(T)) spectrum of high p(T) muons can be determined. The production of these muons is calculable in perturbative QCD, so the measured muon spectra can be used to probe the composition of incident cosmic-rays. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. RP Klein, SR (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. NR 14 TC 0 Z9 0 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5632 J9 NUCL PHYS B-PROC SUP JI Nucl. Phys. B-Proc. Suppl. PD JAN PY 2008 VL 175 BP 346 EP 349 DI 10.1016/j.nuclphysbps.2007.11.028 PG 4 WC Physics, Particles & Fields SC Physics GA 259YC UT WOS:000252975800066 ER PT J AU Achterberg, A Ackermann, M Adams, J Ahrens, J Andeen, K Atlee, DW Bahcall, JN Bai, X Baret, B Barwick, SW Bay, R Beattie, K Becka, T Becker, JK Becker, KH Berghaus, P Berley, D Bernardini, E Bertrand, D Besson, DZ Blaufuss, E Boersma, DJ Bohm, C Bolmont, J Boser, S Botner, O Bouchta, A Braun, J Burgess, C Burgess, T Castermans, T Chirkin, D Christy, B Clem, J Cowen, DF D'Agostino, MV Davour, A Day, CT De Clercq, C Demirors, L Descamps, F Desiati, P DeYoung, T Diaz-Velez, JC Dreyer, J Dumm, JP Duvoort, MR Edwards, WR Ehrlich, R Eisch, J Ellsworth, RW Evenson, PA Fadiran, O Fazely, AR Feser, T Filimonov, K Fox, BD Gaisser, TK Gallagher, J Ganugapati, R Geenen, H Gerhardt, L Goldschmidt, A Goodman, JA Gozzini, R Grullon, S Gross, A Gunasingha, RM Gurtner, M Hallgren, A Halzen, F Han, K Hanson, K Hardtke, D Hardtke, R Harenberg, T Hart, JE Hauschildt, T Hays, D Heise, J Helbing, K Hellwig, M Herquet, P Hill, GC Hodges, J Hoffman, KD Hommez, B Hoshina, K Hubert, D Hughey, B Hulth, PO Hultqvist, K Hundertmark, S Hulss, JP Ishihara, A Jacobsen, J Japaridze, GS Johansson, H Jones, A Joseph, JM Kampert, KH Karle, A Kawai, H Kelley, JL Kestel, M Kitamura, N Klein, SR Klepser, S Kohnen, G Kolanoski, H Kopke, L Krasberg, M Kuehn, K Landsman, H Leich, H Leier, D Leuthold, M Liubarsky, I Lundberg, J Lunemann, J Madsen, J Mase, K Matis, HS McCauley, T McParland, CP Meli, A Messarius, T Meszaros, P Miyamoto, H Mokhtarani, A Montaruli, T Morey, A Morse, R Movit, SM Munich, K Nahnhauer, R Nam, JW Niessen, P Nygren, DR Ogelman, H Olivas, A Patton, S Pena-Garay, C de los Heros, CP Piegsa, A Pieloth, D Pohl, AC Porrata, R Pretz, J Price, PB Przybylski, GT Rawlins, K Razzaque, S Resconi, E Rhode, W Ribordy, M Rizzo, A Robbins, S Roth, P Rott, C Rutledge, D Ryckbosch, D Sander, HG Sarkar, S Schlenstedt, S Schmidt, T Schneider, D Seckel, D Seo, SH Seunarine, S Silvestri, A Smith, AJ Solarz, M Song, C Sopher, JE Spiczak, GM Spiering, C Stamatikos, M Stanev, T Steffen, P Stezelberger, T Stokstad, RG Stoufer, MC Stoyanov, S Strahler, EA Straszheim, T Sulanke, KH Sullivan, GW Sumner, TJ Taboada, I Tarasova, O Tepe, A Thollander, L Tilav, S Tluczykont, M Toale, PA Turcan, D van Eijndhoven, N Vandenbroucke, J Van Overloop, A Veigt, B Wagner, W Walck, C Waldmann, H Walter, M Wang, YR Wendt, C Wiebusch, CH Wikstrom, G Williams, DR Wischnewski, R Wissing, H Woschnagg, K Xu, XW Yodh, G Yoshida, S Zornoza, JD AF Achterberg, A. Ackermann, M. Adams, J. Ahrens, J. Andeen, K. Atlee, D. W. Bahcall, J. N. Bai, X. Baret, B. Barwick, S. W. Bay, R. Beattie, K. Becka, T. Becker, J. K. Becker, K. -H. Berghaus, P. Berley, D. Bernardini, E. Bertrand, D. Besson, D. Z. Blaufuss, E. Boersma, D. J. Bohm, C. Bolmont, J. Boeser, S. Botner, O. Bouchta, A. Braun, J. Burgess, C. Burgess, T. Castermans, T. Chirkin, D. Christy, B. Clem, J. Cowen, D. F. D'Agostino, M. V. Davour, A. Day, C. T. De Clercq, C. Demiroers, L. Descamps, F. Desiati, P. DeYoung, T. Diaz-Velez, J. C. Dreyer, J. Dumm, J. P. Duvoort, M. R. Edwards, W. R. Ehrlich, R. Eisch, J. Ellsworth, R. W. Evenson, P. A. Fadiran, O. Fazely, A. R. Feser, T. Filimonov, K. Fox, B. D. Gaisser, T. K. Gallagher, J. Ganugapati, R. Geenen, H. Gerhardt, L. Goldschmidt, A. Goodman, J. A. Gozzini, R. Grullon, S. Gross, A. Gunasingha, R. M. Gurtner, M. Hallgren, A. Halzen, F. Han, K. Hanson, K. Hardtke, D. Hardtke, R. Harenberg, T. Hart, J. E. Hauschildt, T. Hays, D. Heise, J. Helbing, K. Hellwig, M. Herquet, P. Hill, G. C. Hodges, J. Hoffman, K. D. Hommez, B. Hoshina, K. Hubert, D. Hughey, B. Hulth, P. O. Hultqvist, K. Hundertmark, S. Huelss, J. -P. Ishihara, A. Jacobsen, J. Japaridze, G. S. Johansson, H. Jones, A. Joseph, J. M. Kampert, K. -H. Karle, A. Kawai, H. Kelley, J. L. Kestel, M. Kitamura, N. Klein, S. R. Klepser, S. Kohnen, G. Kolanoski, H. Koepke, L. Krasberg, M. Kuehn, K. Landsman, H. Leich, H. Leier, D. Leuthold, M. Liubarsky, I. Lundberg, J. Luenemann, J. Madsen, J. Mase, K. Matis, H. S. McCauley, T. McParland, C. P. Meli, A. Messarius, T. Meszaros, P. Miyamoto, H. Mokhtarani, A. Montaruli, T. Morey, A. Morse, R. Movit, S. M. Muenich, K. Nahnhauer, R. Nam, J. W. Niessen, P. Nygren, D. R. Oegelman, H. Olivas, A. Patton, S. Pena-Garay, C. de los Heros, C. Perez Piegsa, A. Pieloth, D. Pohl, A. C. Porrata, R. Pretz, J. Price, P. B. Przybylski, G. T. Rawlins, K. Razzaque, S. Resconi, E. Rhode, W. Ribordy, M. Rizzo, A. Robbins, S. Roth, P. Rott, C. Rutledge, D. Ryckbosch, D. Sander, H. -G. Sarkar, S. Schlenstedt, S. Schmidt, T. Schneider, D. Seckel, D. Seo, S. H. Seunarine, S. Silvestri, A. Smith, A. J. Solarz, M. Song, C. Sopher, J. E. Spiczak, G. M. Spiering, C. Stamatikos, M. Stanev, T. Steffen, P. Stezelberger, T. Stokstad, R. G. Stoufer, M. C. Stoyanov, S. Strahler, E. A. Straszheim, T. Sulanke, K. -H. Sullivan, G. W. Sumner, T. J. Taboada, I. Tarasova, O. Tepe, A. Thollander, L. Tilav, S. Tluczykont, M. Toale, P. A. Turcan, D. van Eijndhoven, N. Vandenbroucke, J. Van Overloop, A. Veigt, B. Wagner, W. Walck, C. Waldmann, H. Walter, M. Wang, Y. -R. Wendt, C. Wiebusch, C. H. Wikstroem, G. Williams, D. R. Wischnewski, R. Wissing, H. Woschnagg, K. Xu, X. W. Yodh, G. Yoshida, S. Zornoza, J. D. TI IceCube contributions to the XIV International Symposium on Very High Energy Cosmic Ray Interactions (ISVHECRI 2006) Weihai, China - August 15-22 SO NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS LA English DT Proceedings Paper CT 14th International Symposium on Very High Energy Cosmic Ray Interactions CY AUG 15-22, 2006 CL Weihai, PEOPLES R CHINA SP Shandong Univ, Chinese Acad Sci, Inst High Energy Phys, IUPAP, Cosm Ray Commiss, IUPAP, Emuls Chamber Comm C1 [Achterberg, A.; Duvoort, M. R.; Heise, J.; van Eijndhoven, N.] Univ Utrecht, Dept Phys & Astron, SRON, NL-3584 CC Utrecht, Netherlands. [Leuthold, M.; Wiebusch, C. H.; Wissing, H.] Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany. [Rawlins, K.] Univ Alaska, Dept Phys & Astron, Anchorage, AK 99508 USA. [Fadiran, O.; Japaridze, G. S.] Clark Atlanta Univ, CTSPS, Atlanta, GA 30314 USA. [Fazely, A. R.; Gunasingha, R. M.; Xu, X. W.] So Univ, Dept Phys, Baton Rouge, LA 70813 USA. [Bay, R.; D'Agostino, M. V.; Filimonov, K.; Hardtke, D.; Morey, A.; Porrata, R.; Price, P. B.; Solarz, M.; Taboada, I.; Vandenbroucke, J.; Woschnagg, K.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Kolanoski, H.] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany. [Beattie, K.; Chirkin, D.; Day, C. T.; Edwards, W. R.; Goldschmidt, A.; Hays, D.; Jacobsen, J.; Jones, A.; Joseph, J. M.; Klein, S. R.; Matis, H. S.; McCauley, T.; McParland, C. P.; Mokhtarani, A.; Nygren, D. R.; Patton, S.; Przybylski, G. T.; Sopher, J. E.; Stezelberger, T.; Stokstad, R. G.; Stoufer, M. C.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Berghaus, P.; Bertrand, D.] Univ Libre Bruxelles, Fac Sci, B-1050 Brussels, Belgium. [Baret, B.; De Clercq, C.; Hubert, D.; Rizzo, A.] Vrije Univ Brussels, Dienst ELEM, B-1050 Brussels, Belgium. [Kawai, H.; Mase, K.; Yoshida, S.] Chiba Univ, Dept Phys, Chiba 2638522, Japan. [Adams, J.; Han, K.; Seunarine, S.] Univ Canterbury, Dept Phys & Astron, Christchurch 1, New Zealand. [Berley, D.; Blaufuss, E.; Christy, B.; Ehrlich, R.; Ellsworth, R. W.; Goodman, J. A.; Hoffman, K. D.; Olivas, A.; Pretz, J.; Roth, P.; Schmidt, T.; Smith, A. J.; Straszheim, T.; Sullivan, G. W.; Turcan, D.] Univ Maryland, Dept Phys, College Pk, MD 20742 USA. [Becker, J. K.; Dreyer, J.; Leier, D.; Luenemann, J.; Meli, A.; Messarius, T.; Muenich, K.; Rhode, W.] Univ Dortmund, Dept Phys, D-44221 Dortmund, Germany. [Ryckbosch, D.] Univ Ghent, Dept Subatom & Radiat Phys, B-9000 Ghent, Belgium. [Gross, A.; Resconi, E.] Max Planck Inst Kernphys, D-69177 Heidelberg, Germany. [Barwick, S. W.; Gerhardt, L.; Kuehn, K.; Nam, J. W.; Silvestri, A.; Yodh, G.] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA. [Besson, D. Z.] Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA. [Liubarsky, I.] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BW, England. [Gallagher, J.] Univ Wisconsin, Dept Astron, Madison, WI 53706 USA. [Andeen, K.; Boersma, D. J.; Braun, J.; Desiati, P.; Diaz-Velez, J. C.; Dumm, J. P.; Ganugapati, R.; Grullon, S.; Hughey, B.; Karle, A.; Kelley, J. L.; Landsman, H.; Montaruli, T.; Morse, R.; Oegelman, H.; Schneider, D.; Song, C.; Stamatikos, M.; Strahler, E. A.; Wang, Y. -R.; Wendt, C.; Zornoza, J. D.] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA. [Ahrens, J.; Becka, T.; Feser, T.; Gozzini, R.; Hellwig, M.; Piegsa, A.; Sander, H. -G.] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany. [Castermans, T.; Herquet, P.; Ribordy, M.] Univ Mons Hainaut, B-7000 Mons, Belgium. [Bai, X.; Clem, J.; Demiroers, L.; Evenson, P. A.; Gaisser, T. K.; Hauschildt, T.; Niessen, P.; Seckel, D.; Stanev, T.; Stoyanov, S.; Tilav, S.] Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA. [Sarkar, S.] Univ Oxford, Dept Phys, Oxford OX1 3NP, England. [Bahcall, J. N.; Pena-Garay, C.] Inst Adv Study, Princeton, NJ 08540 USA. [Eisch, J.; Madsen, J.; Spiczak, G. M.] Univ Wisconsin, Dept Phys, River Falls, WI 54022 USA. [Bohm, C.; Burgess, C.; Burgess, T.; Hulth, P. O.; Hultqvist, K.; Hundertmark, S.; Thollander, L.; Walck, C.; Wikstroem, G.] Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden. [Cowen, D. F.; Meszaros, P.; Movit, S. M.; Razzaque, S.] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA. [Atlee, D. W.; Cowen, D. F.; DeYoung, T.; Fox, B. D.; Hart, J. E.; Krasberg, M.; Meszaros, P.; Razzaque, S.; Rott, C.; Rutledge, D.; Seo, S. H.; Wagner, W.; Williams, D. R.] Penn State Univ, Dept Phys, University Pk, PA 16802 USA. [Botner, O.; Bouchta, A.; Davour, A.; Lundberg, J.; de los Heros, C. Perez; Pohl, A. C.] Uppsala Univ, Div High Energy Phys, S-75121 Uppsala, Sweden. [Becker, K. -H.; Geenen, H.; Harenberg, T.; Helbing, K.; Huelss, J. -P.; Robbins, S.; Tepe, A.] Univ Wuppertal, Dept Phys, D-42119 Wuppertal, Germany. [Ackermann, M.; Bernardini, E.; Bolmont, J.; Boeser, S.; Leier, D.; Nahnhauer, R.; Pieloth, D.; Schlenstedt, S.; Spiering, C.; Steffen, P.; Sulanke, K. -H.; Tarasova, O.; Tluczykont, M.; Waldmann, H.; Walter, M.; Wischnewski, R.] DESY, D-15735 Zeuthen, Germany. [Montaruli, T.] Univ Bari, I-70126 Bari, Italy. RP Achterberg, A (reprint author), Univ Utrecht, Dept Phys & Astron, SRON, NL-3584 CC Utrecht, Netherlands. RI Hundertmark, Stephan/A-6592-2010; Botner, Olga/A-9110-2013; Hallgren, Allan/A-8963-2013; Sarkar, Subir/G-5978-2011; OI Sarkar, Subir/0000-0002-3542-858X; Perez de los Heros, Carlos/0000-0002-2084-5866; Hubert, Daan/0000-0002-4365-865X NR 0 TC 0 Z9 0 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5632 J9 NUCL PHYS B-PROC SUP JI Nucl. Phys. B-Proc. Suppl. PD JAN PY 2008 VL 175 BP 407 EP 408 DI 10.1016/j.nuclphysbps.2007.11.040 PG 2 WC Physics, Particles & Fields SC Physics GA 259YC UT WOS:000252975800078 ER PT J AU Joeck, N AF Joeck, Neil BE Ganguly, S Kapur, SP TI The Kargil War and nuclear deterrence SO NUCLEAR PROLIFERATION IN SOUTH ASIA: CRISIS BEHAVIOUR AND THE BOMB SE Asian Security Studies LA English DT Article; Book Chapter ID PROLIFERATION C1 Lawrence Livermore Natl Lab, Livermore, CA USA. RP Joeck, N (reprint author), Lawrence Livermore Natl Lab, Livermore, CA USA. NR 40 TC 0 Z9 0 U1 1 U2 4 PU ROUTLEDGE PI NEW YORK PA 29 W 35TH ST, NEW YORK, NY 10001 USA BN 978-0-203-89286-2 J9 ASIAN SECUR STUD PY 2008 BP 117 EP 143 D2 10.4324/9780203892862 PG 27 WC International Relations; Asian Studies; Political Science SC International Relations; Asian Studies; Government & Law GA BMG63 UT WOS:000272298200007 ER PT S AU Passell, HD Solodukhin, V Khazekhber, S Pozniak, VL Vasiliev, IA Alekhina, V Djuraev, A Salikhbaev, US Radyuk, RI Suozzi, D Barber, DS AF Passell, H. D. Solodukhin, V. Khazekhber, S. Pozniak, V. L. Vasiliev, I. A. Alekhina, V. Djuraev, A. Salikhbaev, U. S. Radyuk, R. I. Suozzi, D. Barber, D. S. BE Salbu, B Skipperud, L TI The Navruz Project: Cooperative, transboundary monitoring, data sharing and modeling of water resources in Central Asia SO NUCLEAR RISKS IN CENTRAL ASIA SE NATO Science for Peace and Security Series C-Environmental Security LA English DT Proceedings Paper CT NATO Advanced Research Workshop on Nuclear Risk in Central Asia CY JUN 20-22, 2006 CL Almaty, KAZAKHSTAN SP NATO DE sustainable water resources management; radionuclides and metals; Syr Darya and Amu Darya River ID RIVERS AB The Navruz Project engages scientists from nuclear physics research institutes and water science institutions in the Central Asia Republics of Kazakhstan, Kyrgyzstan, Tajikistan, and Uzbekistan, and Sandia National Laboratories. The project uses standardized methods to monitor basic water quality parameters, radionuclides, and metals in the Syr Darya and Amu Darya rivers. Phase I of the project was initiated in 2000 with 15 sampling points in each of the four countries with sample analysis performed for over 100 parameters. Phase 11 of the project began in 2003 and expanded sampling to include at least 30 points in each country in an effort to characterize "hot spots" and to identify sources. Phase III of the project began in 2006 and will integrate decision support modeling with the existing monitoring. Overall, the project addresses four main goals: to create collaboration among Central Asian scientists and countries; to help increase capabilities in Central Asian nations for sustainable water resources management; to provide a scientific basis for supporting nuclear transparency and nonproliferation in the region; and to help reduce the threat of conflict in Central Asia over water resources. Contamination of these rivers is a result of growing population, urbanization, and agricultural activities, as well as radioactive contamination from a legacy of uranium mining and related activities of the former Soviet Union. The project focuses on waterbome radionuclides and metals because of the importance of these contaminants to public health and political stability in Central Asia. C1 [Passell, H. D.; Suozzi, D.] Sandia Natl Labs, Geosci & Environm Ctr, Monitoring Ctr, POB 5800, Albuquerque, NM 87185 USA. [Solodukhin, V.; Khazekhber, S.; Pozniak, V. L.] NNC RK, Inst Phys Nucl, Alma Ata 050032, Kazakhstan. [Vasiliev, I. A.; Alekhina, V.] Chui Prospect, Inst Phys, Bishkek 720071, Kyrgyzstan. [Djuraev, A.] Tajik Acad Sci, Atomic Energy Agcy, Dushanbe, Tajikistan. [Salikhbaev, U. S.; Radyuk, R. I.] Inst Nucl Phys, AS RU, Novosibirsk, Russia. RP Passell, HD (reprint author), Sandia Natl Labs, Geosci & Environm Ctr, Monitoring Ctr, POB 5800, Albuquerque, NM 87185 USA. FU Sandia National Laboratories; U.S. Department of Energy National Nuclear Security Agency's Office of Nonproliferation Policy; International Science and Technology Center (ISTC); Science and Technology Center of the Ukraine (STCU); home institutions and governments of all the Navruz Project partners; NATO Science for Peace Subprogramme; United States Department of Energy [DE-AC04-94AL85000] FX We gratefully acknowledge the support and assistance from Sandia National Laboratories, the U.S. Department of Energy National Nuclear Security Agencys Office of Nonproliferation Policy, the International Science and Technology Center (ISTC), and the Science and Technology Center of the Ukraine (STCU), the home institutions and governments of all the Navruz Project partners, and the NATO Science for Peace Subprogramme. 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-AC04-94AL85000. NR 9 TC 1 Z9 2 U1 0 U2 2 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 1871-4668 BN 978-1-4020-8315-0 J9 NATO SCI PEACE SECUR JI NATO Sci. Peace Secur. Ser. C- Environ. Secur. PY 2008 BP 191 EP + DI 10.1007/978-1-4020-8317-4_18 PG 4 WC Ecology; Environmental Sciences; Geosciences, Multidisciplinary; Physics, Nuclear SC Environmental Sciences & Ecology; Geology; Physics GA BHQ21 UT WOS:000255383400018 ER PT J AU Sanchez, R Loaiza, D Kimpland, R Hayes, D Cappiello, C Chadwick, M AF Sanchez, Rene Loaiza, David Kimpland, Robert Hayes, David Cappiello, Charlene Chadwick, Mark TI Criticality of a Np-237 sphere SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article AB A series of critical-mass experiments using a 6-kg neptunium sphere was performed on the Planet vertical-assembly machine at Los Alamos National Laboratory (LANL). The purpose of the experiments was to obtain a better estimate of the critical mass of Np-237. The configurations that were studied included surrounding the neptunium sphere with highly enriched uranium (HEU) shells as well as reflecting it with iron and polyethylene. An additional experiment using a 4.5-kg alpha-phase plutonium sphere surrounded with HEU was performed to demonstrate how well the computer transport code and the existing cross-section data for uranium and plutonium could reproduce the experiment. For some of the configurations, the prompt-neutron decay constants at delayed critical were measured These experiments provided an integral measurement of the cross sections for Np-237 in the fast-energy and possibly in the intermediate-energy regions. The measured k(eff) from these experiments was compared with the calculated k(eff) from the Monte Carlo N-Particle (MCNP) transport code using ENDF/B-V and ENDF/B-VI and cross-section data evaluated by the Nuclear Theory and Applications group (T-16) at LANL. In all the neptunium experiments, the calculated keff values based on ENDF/B-VI data were similar to 1 % lower than the experimental k(eff). After adjusting the cross sections for neptunium and U-235 to match the bare neptunium/ HEU experiment as well as Godiva k(eff) criticality and spectra indexes, the MCNP code yielded a value of 57 +/- 4 kg for the bare critical mass of Np-237. C1 [Sanchez, Rene; Loaiza, David; Kimpland, Robert; Hayes, David; Cappiello, Charlene; Chadwick, Mark] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Sanchez, R (reprint author), Los Alamos Natl Lab, MS B228, Los Alamos, NM 87545 USA. EM rgsanchez@lanl.gov NR 12 TC 7 Z9 7 U1 0 U2 1 PU AMER NUCLEAR SOC PI LA GRANGE PK PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA SN 0029-5639 J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD JAN PY 2008 VL 158 IS 1 BP 1 EP 14 PG 14 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 250EO UT WOS:000252283000001 ER PT J AU Lebrat, JF Aliberti, G D'Angelo, A Billebaud, A Brissot, R Brockmann, H Carta, M Destouches, C Gabrielli, F Gonzalez, E Hogenbirk, A Klein-Meulenkamp, R Le Brun, C Liatard, E Mellier, F Messaoudi, N Peluso, V Plaschy, M Thomas, M Villamarin, D Vollaire, J AF Lebrat, J. F. Aliberti, G. D'Angelo, A. Billebaud, A. Brissot, R. Brockmann, H. Carta, M. Destouches, C. Gabrielli, F. Gonzalez, E. Hogenbirk, A. Klein-Meulenkamp, R. Le Brun, C. Liatard, E. Mellier, F. Messaoudi, N. Peluso, V. Plaschy, M. Thomas, M. Villamarin, D. Vollaire, J. TI Global results from deterministic and stochastic analysis of the MUSE-4 experiments on the neutronics of accelerator-driven systems SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article AB The MUSE-4 program is a series of zero-power experiments carried out at the Commissariat a l'Energie Atomique Cadarache MASURCA nuclear facility from 2001 to 2004 to study the neutronics of accelerator-driven systems (ADSs). The program has investigated the coupling of a multiplying medium to neutron sources of 2.6 or 14 MeV provided by an accelerator (GENEPI) via D(d,n)He-3 or T(d,n)He-4 nuclear fusion reactions, respectively. The fuel was UO2-PuO2, the simulated coolant was sodium or lead, and the multiplication factor k(eff) ranged from I to 0.95. The aim of the experiment was to develop new measurement techniques specific to ADSs and to test the performances of neutronic calculations codes for such systems. The interpretation of the MUSE-4 experiment has shown that the physical parameters of the system are globally well reproduced by calculations performed with the ERANOS code system, which proves good agreement with both the measurements and the reference Monte Carlo calculations; this concerns the critical mass, the delayed neutron fraction, the fission rate shapes, and the spectral indices. This is a particularly remarkable issue for ERANOS and its associated libraries, which had never been tested for such situations. Concerning the nuclear data, JEF-based cross sections provide a better agreement on critical mass than other libraries. A sensitivity of several measured parameters to the elastic and inelastic cross section of lead have been demonstrated, and possible biases on these cross sections have been indicated. We have shown that several methods based on deterministic or stochastic calculations allow us to relate the experimental neutron population decay after a source pulse with the reactivity of the system; these reactivity determination techniques are in good agreement with standard reactivity measurement techniques. C1 [Lebrat, J. F.; Destouches, C.; Mellier, F.] CEN Cadarache, F-13108 St Paul Les Durance, France. [Aliberti, G.] Argonne Natl Lab, Argonne, IL 60439 USA. [D'Angelo, A.; Carta, M.; Peluso, V.] ENEA, Casaccia Res Ctr, Rome, Italy. [Billebaud, A.; Brissot, R.; Le Brun, C.; Liatard, E.; Vollaire, J.] Univ Grenoble 1, CNRS, Lab Phys Subatom & Cosmol, Inst Natl Phys Nucl & Phys Particules, Grenoble, France. [Brockmann, H.] Forschungszentrum Julich, Julich, Germany. [Gabrielli, F.] Forschungszentrum Karlsruhe, Karlsruhe, Germany. [Gonzalez, E.; Villamarin, D.] Ctr Invest Energet Medioambientales & Technol, Madrid, Spain. [Hogenbirk, A.; Klein-Meulenkamp, R.] Nucl Res & Consultancy Grp, Petten, Netherlands. [Messaoudi, N.] SCK CEN Mol, Brussels, Belgium. [Plaschy, M.] Paul Scherrer Inst, Villigen, Switzerland. RP Lebrat, JF (reprint author), CEN Cadarache, Bldg 230, F-13108 St Paul Les Durance, France. EM jean-francois.lebrat@cea.fr NR 28 TC 20 Z9 20 U1 0 U2 3 PU AMER NUCLEAR SOC PI LA GRANGE PK PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA SN 0029-5639 J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD JAN PY 2008 VL 158 IS 1 BP 49 EP 67 PG 19 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 250EO UT WOS:000252283000005 ER PT J AU Rochman, D Herman, M Mughabghab, SF Oblozinsky, R AF Rochman, D. Herman, M. Mughabghab, S. F. Oblozinsky, R. TI New evaluation of the Tc-99 neutron-induced cross sections for the ENDF/B-VII.0 library SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article ID NUCLEAR-DATA LIBRARY; CAPTURE; TRANSMUTATION; SPECTROMETER; TECHNETIUM; SPECTRA; 99TC AB Neutron-induced cross sections for Tc-99 were evaluated from 10(-5) eV to 20 MeV for the U.S. ENDF/B-VII.0 library released in December 2006 The resonance parameters were adopted from the new Atlas of Neutron Resonances. In the fast region, all open reaction channels were evaluated with the reaction code EMPIRE-2.19. Comparison of the present evaluation with microscopic measurements and data recommended by European (JEFF-3.1) and Japanese (JENDL-3.3) libraries is presented. C1 [Rochman, D.; Herman, M.; Mughabghab, S. F.; Oblozinsky, R.] Brookhaven Natl Lab, Natl Nucl Data Ctr, Upton, NY 11973 USA. RP Rochman, D (reprint author), Nucl Res & Consultancy Grp, POB 25, NL-1755 ZG Petten, Netherlands. EM rochman@nrg-nl.com OI Rochman, Dimitri/0000-0002-5089-7034 NR 66 TC 6 Z9 6 U1 0 U2 2 PU AMER NUCLEAR SOC PI LA GRANGE PK PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA SN 0029-5639 J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD JAN PY 2008 VL 158 IS 1 BP 68 EP 77 PG 10 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 250EO UT WOS:000252283000006 ER PT J AU Sherwood, DJ Crawford, CL White, TL Duffey, CE Calloway, TB AF Sherwood, D. J. Crawford, C. L. White, T. L. Duffey, C. E. Calloway, T. B. TI Impact of antifoam agent addition on hydrogen formation in the Hanford Waste Treatment and Immobilization Plant SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article AB Ventilation and mixing systems in the Hanford Waste Treatment and Immobilization Plant (WTP) are being designed to account for the flammable gas hydrogen that will form in process streams, just as it also does in the radioactive liquid wastes awaiting immobilization at the Hanford Tank Farms. Tank wastes forming hydrogen at the highest rates do so by reactions involving dissolved organic complexant compounds, even though hydrogen is also formed by the better known radiolysis pathway. Hydrogen generation rates (HGRs) are predicted with a correlation relating waste properties to reaction pathways involving radiolysis of water and the degradation of organic compounds. This correlation accounts only for aqueous phase reactions. An antifoam agent (AFA) will be added to waste processed in the WTP, This organic liquid mixture is immiscible in aqueous systems and will therefore form a nonaqueous phase liquid layer on the processed waste, unless some of its compounds are unstable in the hostile physical/chemical environment and break down into soluble degradation products. Dissolved organic species increase the organic source term in the WTP HGR correlation, but the correlation requires adaptation to address hydrogen formed from immiscible organic liquids. Here, we report our initial evaluation of the hydrogen formed by Co-60 gamma irradiation of a waste simulant containing Dow Corning Q2-3183A AFA with an adapted WTP HGR correlation. C1 [Sherwood, D. J.] Hanford Waste Treatment & Immobilizat Plant, Washington Grp Int, Richland, WA 99354 USA. [Crawford, C. L.; White, T. L.; Duffey, C. E.; Calloway, T. B.] Westinghouse Savannah River Co, Savannah River Lab, Aiken, SC 29808 USA. RP Sherwood, DJ (reprint author), Hanford Waste Treatment & Immobilizat Plant, Washington Grp Int, Richland, WA 99354 USA. EM djsherwo@bechtel.com NR 17 TC 0 Z9 0 U1 1 U2 1 PU AMER NUCLEAR SOC PI LA GRANGE PK PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA SN 0029-5639 J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD JAN PY 2008 VL 158 IS 1 BP 88 EP 96 PG 9 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 250EO UT WOS:000252283000008 ER PT J AU Joo, HK Taiwo, TA Yang, WS Khalil, HS AF Joo, Hyung-Kook Taiwo, Temitope A. Yang, Won Sik Khalil, Hussein S. TI Numerical benchmarks for very high-temperature reactors based on the CNPS critical experiments SO NUCLEAR TECHNOLOGY LA English DT Article DE numerical benchmark; very high-temperature reactor physics; compact nuclear power source critical experiments AB An evaluation of the Compact Nuclear Power Source (CNPS) experiments conducted at Los Alamos National Laboratory in the 1980s has been done using information available in the open literature. The MCNP4C Monte Carlo results for critical test configurations are in good agreement with the experimental values; the k(eff) values are generally within 0.5% of the experimental values. The calculated total and differential rod worths and material worths were also found generally close to experimental values. These good results motivated the utilization of the experimental test data for the specification of two- and three-dimensional numerical benchmark cases that could be used for the verification and validation of core physics codes developed for Very High Temperature Reactor (VHTR) analysis, particularly the deterministic lattice and whole-core physics codes. To define the benchmark cases, the irregular arrangement of channels in the actual CNPS core was simplified to a regular Cartesian geometry arrangement in the benchmark cases, while preserving the important neutronics characteristics of the CNPS. The results of deterministic calculations using the HELIOS/DIF3D code package were compared to MCNP4C results to show the usefulness of the numerical benchmark cases. C1 [Joo, Hyung-Kook; Taiwo, Temitope A.; Yang, Won Sik; Khalil, Hussein S.] Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA. RP Joo, HK (reprint author), Korea Atom Energy Res Inst, 150 Deokjin Dong, Taejon, South Korea. EM hkjoo@kaeri.re.kr OI Yang, Won Sik/0000-0003-0734-6023 NR 11 TC 0 Z9 0 U1 0 U2 4 PU AMER NUCLEAR SOC PI LA GRANGE PK PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA SN 0029-5450 J9 NUCL TECHNOL JI Nucl. Technol. PD JAN PY 2008 VL 161 IS 1 BP 8 EP 26 PG 19 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 246CQ UT WOS:000251985500002 ER PT S AU Carlson, J Gezerlis, A Reddy, S AF Carlson, J. Gezerlis, Alexandros Reddy, Sanjay BE Danielewicz, P Piecuch, P Zelevinsky, V TI Equation of state and pairing gaps in cold atoms and low-density neutron matter SO NUCLEI AND MESOSCOPIC PHYSICS SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd Workshop on Nuclei and Mesoscopic Physics CY OCT 20-22, 2007 CL Michigan State Univ, NSCL, E Lansing, MI HO Michigan State Univ, NSCL DE superfluidity; pairing; neutron matter; cold atoms ID FERMI GAS AB Cold Atom experiments provide a direct experimental test of the properties of neutron matter at extremely low densities, as is expected to be found in the crusts of neutron stars. These systems are very unusual in that the pairing gap is of the order of the Fermi energy, rather than the very small fraction typical for superfluids or superconductors. We compare the equation of state and the pairing gaps in these systems. C1 [Carlson, J.; Gezerlis, Alexandros; Reddy, Sanjay] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Carlson, J (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RI Gezerlis, Alexandros/O-9426-2014 OI Gezerlis, Alexandros/0000-0003-2232-2484 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 978-0-7354-0514-1 J9 AIP CONF PROC PY 2008 VL 995 BP 17 EP 24 PG 8 WC Nanoscience & Nanotechnology; Physics, Applied SC Science & Technology - Other Topics; Physics GA BHP83 UT WOS:000255196600003 ER PT S AU Celardo, GL Izrailev, FM Sorathia, S Zelevinsky, VG Berman, GP AF Celardo, G. L. Izrailev, F. M. Sorathia, S. Zelevinsky, V. G. Berman, G. P. BE Danielewicz, P Piecuch, P Zelevinsky, V TI Continuum shell model: From Ericson to conductance fluctuations SO NUCLEI AND MESOSCOPIC PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 2nd Workshop on Nuclei and Mesoscopic Physics CY OCT 20-22, 2007 CL Michigan State Univ, NSCL, E Lansing, MI HO Michigan State Univ, NSCL DE shell model; two-body random interaction; Ericson fluctuations; conductance fluctuations ID COMPOUND-NUCLEUS SCATTERING; UNSTABLE QUANTUM STATES; OVERLAPPING RESONANCES; CHAOTIC SCATTERING; S-MATRIX; STATISTICAL-THEORY; CROSS SECTIONS; SYSTEMS; PHYSICS; DYNAMICS AB We discuss an approach for studying the properties of mesoscopic systems, where discrete and continuum parts of the spectrum are equally important. The approach can be applied (i) to stable heavy nuclei and complex atoms near the continuum threshold, (ii) to nuclei far from the region of nuclear stability, both of the regions being of great current interest, and (iii) to mesoscopic devices with interacting electrons. The goal is to develop a new consistent version of the continuum shell model that simultaneously takes into account strong interaction between fermions and coupling to the continuum. Main attention is paid to the formation of compound resonances, their statistical properties, and correlations of the cross sections. We study the Ericson fluctuations of overlapping resonances and show that the continuum shell model nicely describes universal properties of the conductance fluctuations. C1 [Celardo, G. L.] Tulane Univ, Dept Phys, New Orleans, LA 70118 USA. [Izrailev, F. M.; Sorathia, S.] Univ Autonoma Puebla, Inst Fis, Puebla 72570, Mexico. [Izrailev, F. M.; Zelevinsky, V. G.] Michigan State Univ, NSCL, E Lansing, MI 48824 USA. [Izrailev, F. M.; Zelevinsky, V. G.] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA. [Berman, G. P.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. [Berman, G. P.] Los Alamos Natl Lab, CNLS, Los Alamos, NM 87545 USA. RP Celardo, GL (reprint author), Tulane Univ, Dept Phys, New Orleans, LA 70118 USA. FU NSF [PHY-0244453, PHY-0555366]; Department of Energy at Los Alamos National Laboratory [DE-AC52-06NA25396] FX We acknowledge useful discussion with T. Gorin, Y Fyodorov, D. Savin, and V. Sokolov. The work was supported by the NSF grants PHY-0244453 and PHY-0555366. The work by G.PB. was carried out under the auspices of the National Nuclear Security Administration of the U.S. Department of Energy at Los Alamos National Laboratory under Contract No. DE-AC52-06NA25396. S.S. acknowledges the financial support from the Leverhuhne Trust. NR 42 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 978-0-7354-0514-1 J9 AIP CONF PROC PY 2008 VL 995 BP 75 EP + PG 2 WC Nanoscience & Nanotechnology; Physics, Applied SC Science & Technology - Other Topics; Physics GA BHP83 UT WOS:000255196600010 ER PT J AU Mundt, JM Hah, SS Sumbad, RA Schramm, V Henderson, PT AF Mundt, Janna M. Hah, Sang Soo Sumbad, Rhoda A. Schramm, Vern Henderson, Paul T. TI Incorporation of extracellular 8-oxodG into DNA and RNA requires purine nucleoside phosphorylase in MCF-7 cells SO NUCLEIC ACIDS RESEARCH LA English DT Article ID PYROPHOSPHOHYDROLASE 8-OXO-DGTPASE ACTIVITY; OXIDATIVE DAMAGE; MAMMALIAN-CELLS; RIBONUCLEOTIDE REDUCTASE; IMMUCILLIN-H; REPAIR; PROTEIN; 8-OXOGUANINE; INHIBITION; RADICALS AB 7,8-Dihydro-8-oxo-2'-deoxyguanosine (8-oxodG) is a well-known marker of oxidative stress. We report a mechanistic analysis of several pathways by which 8-oxodG is converted to nucleotide triphosphates and incorporated into both DNA and RNA. Exposure of MCF-7 cells to [C-14]8-oxodG combined with specific inhibitors of several nucleotide salvage enzymes followed with accelerator mass spectrometry provided precise quantitation of the resulting radiocarbon-labeled species. Concentrations of exogenously dosed nucleobase in RNA reached one per 10(6) nucleotides, 56-fold higher than the maximum observed in DNA. Radiocarbon incorporation into DNA and RNA was abrogated by Immucillin H, an inhibitor of human purine nucleoside phosphorylase (PNP). Inhibition of ribonucleotide reductase (RR) decreased the radiocarbon content of the DNA, but not in RNA, indicating an important role for RR in the formation of 8-oxodG-derived deoxyribonucleotides. Inhibition of deoxycytidine kinase had little effect on radiocarbon incorporation in DNA, which is in contrast to the known ability of mammalian cells to phosphorylate dG. Our data indicate that PNP and RR enable nucleotide salvage of 8-oxodG in MCF-7 cells, a previously unrecognized mechanism that may contribute to mutagenesis and carcinogenesis. C1 [Mundt, Janna M.; Hah, Sang Soo; Sumbad, Rhoda A.; Henderson, Paul T.] Lawrence Livermore Natl Lab, Chem Mat Earth & Life Sci Directorate, Livermore, CA 94551 USA. [Schramm, Vern] Yeshiva Univ Albert Einstein Coll Med, Dept Biochem, Bronx, NY 10461 USA. RP Henderson, PT (reprint author), Lawrence Livermore Natl Lab, Chem Mat Earth & Life Sci Directorate, 7000 E Ave,L-452, Livermore, CA 94551 USA. EM henderson48@llnl.gov RI Hah, Sang Soo/D-2621-2011 FU NCI NIH HHS [P01 CA055861, CA55861]; NCRR NIH HHS [RR13461, P41 RR013461] NR 49 TC 17 Z9 19 U1 0 U2 2 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0305-1048 EI 1362-4962 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PD JAN PY 2008 VL 36 IS 1 BP 228 EP 236 DI 10.1093/nar/gkm1032 PG 9 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 253VG UT WOS:000252545100029 PM 18025045 ER PT J AU Harris, MA Deegan, JI Lomax, J Ashburner, M Tweedie, S Carbon, S Lewis, S Mungall, C Day-Richter, J Eilbeck, K Blake, JA Bult, C Diehl, AD Dolan, M Drabkin, H Eppig, JT Hill, DP Ni, L Ringwald, M Balakrishnan, R Binkley, G Cherry, JM Christie, KR Costanzo, MC Dong, Q Engel, SR Fisk, DG Hirschman, JE Hitz, BC Hong, EL Krieger, CJ Miyasato, SR Nash, RS Park, J Skrzypek, MS Weng, S Wong, ED Zhu, KK Botstein, D Dolinski, K Livstone, MS Oughtred, R Berardini, T Li, DH Rhee, SY Apweiler, R Barrell, D Camon, E Dimmer, E Huntley, R Mulder, N Khodiyar, VK Lovering, RC Povey, S Chisholm, R Fey, P Gaudet, P Kibbe, W Kishore, R Schwarz, EM Sternberg, P Van Auken, K Giglio, MG Hannick, L Wortman, J Aslett, M Berriman, M Wood, V Jacob, H Laulederkind, S Petri, V Shimoyama, M Smith, J Twigger, S Jaiswal, P Seigfried, T Howe, D Westerfield, M Collmer, C Torto-Alalibo, T Feltrin, E Valle, G Bromberg, S Burgess, S McCarthy, F AF Harris, Midori A. Deegan, Jennifer I. Lomax, Jane Ashburner, Michael Tweedie, Susan Carbon, Seth Lewis, Suzanna Mungall, Chris Day-Richter, John Eilbeck, Karen Blake, Judith A. Bult, Carol Diehl, Alexander D. Dolan, Mary Drabkin, Harold Eppig, Janan T. Hill, David P. Ni, Li Ringwald, Martin Balakrishnan, Rama Binkley, Gail Cherry, J. Michael Christie, Karen R. Costanzo, Maria C. Dong, Qing Engel, Stacia R. Fisk, Dianna G. Hirschman, Jodi E. Hitz, Benjamin C. Hong, Eurie L. Krieger, Cynthia J. Miyasato, Stuart R. Nash, Robert S. Park, Julie Skrzypek, Marek S. Weng, Shuai Wong, Edith D. Zhu, Kathy K. Botstein, David Dolinski, Kara Livstone, Michael S. Oughtred, Rose Berardini, Tanya Li, Donghui Rhee, Seung Y. Apweiler, Rolf Barrell, Daniel Camon, Evelyn Dimmer, Emily Huntley, Rachael Mulder, Nicola Khodiyar, Varsha K. Lovering, Ruth C. Povey, Sue Chisholm, Rex Fey, Petra Gaudet, Pascale Kibbe, Warren Kishore, Ranjana Schwarz, Erich M. Sternberg, Paul Van Auken, Kimberly Giglio, Michelle Gwinn Hannick, Linda Wortman, Jennifer Aslett, Martin Berriman, Matthew Wood, Valerie Jacob, Howard Laulederkind, Stan Petri, Victoria Shimoyama, Mary Smith, Jennifer Twigger, Simon Jaiswal, Pankaj Seigfried, Trent Howe, Doug Westerfield, Monte Collmer, Candace Torto-Alalibo, Trudy Feltrin, Erika Valle, Giorgio Bromberg, Susan Burgess, Shane McCarthy, Fiona CA Gene Ontology Consortium TI The Gene Ontology project in 2008 SO NUCLEIC ACIDS RESEARCH LA English DT Article ID SEQUENCE ONTOLOGY; RESOURCE; UNIFICATION; GENOME; TOOL AB The Gene Ontology (GO) project (http://www.geneontology.org) provides a set of structured, controlled vocabularies for community use in annotating genes, gene products and sequences (also see http://www.sequenceontology.org/). The ontologies have been extended and refined for several biological areas, and improvements to the structure of the ontologies have been implemented. To improve the quantity and quality of gene product annotations available from its public repository, the GO Consortium has launched a focused effort to provide comprehensive and detailed annotation of orthologous genes across a number of reference genomes, including human and several key model organisms. Software developments include two releases of the ontology-editing tool OBO-Edit, and improvements to the AmiGO browser interface. C1 [Ashburner, Michael; Tweedie, Susan] Univ Cambridge, Dept Genet, Cambridge CB2 3EH, England. [Carbon, Seth; Lewis, Suzanna; Mungall, Chris; Day-Richter, John] BBOP, LBNL, Berkeley, CA USA. [Eilbeck, Karen] Univ Utah, Eccles Inst Human Genet, Salt Lake City, UT USA. [Lomax, Jane] GO EBI, Hinxton, England. [Blake, Judith A.; Bult, Carol; Diehl, Alexander D.; Dolan, Mary; Drabkin, Harold; Eppig, Janan T.; Hill, David P.; Ni, Li; Ringwald, Martin] Jackson Lab, MGI, Bar Harbor, ME 04609 USA. [Balakrishnan, Rama; Binkley, Gail; Cherry, J. Michael; Christie, Karen R.; Costanzo, Maria C.; Dong, Qing; Engel, Stacia R.; Fisk, Dianna G.; Hirschman, Jodi E.; Hitz, Benjamin C.; Hong, Eurie L.; Krieger, Cynthia J.; Miyasato, Stuart R.; Nash, Robert S.; Park, Julie; Skrzypek, Marek S.; Weng, Shuai; Wong, Edith D.; Zhu, Kathy K.] Stanford Univ, Dept Genet, SGD, Stanford, CA 94305 USA. [Botstein, David; Dolinski, Kara; Livstone, Michael S.; Oughtred, Rose] Princeton Univ, Lewis Sigler Inst Integrat Genom, Princeton, NJ 08544 USA. [Berardini, Tanya; Li, Donghui; Rhee, Seung Y.] Carnegie Inst, TAIR, Dept Plant Biol, Stanford, CA USA. [Apweiler, Rolf; Barrell, Daniel; Camon, Evelyn; Dimmer, Emily; Huntley, Rachael; Mulder, Nicola] EBI, UniProt, GOA Database, Hinxton, England. [Khodiyar, Varsha K.; Lovering, Ruth C.; Povey, Sue] UCL, London, England. [Chisholm, Rex; Fey, Petra; Gaudet, Pascale; Kibbe, Warren] Northwestern Univ, Chicago, IL 60611 USA. [Kishore, Ranjana; Schwarz, Erich M.; Sternberg, Paul; Van Auken, Kimberly] CALTECH, Pasadena, CA USA. [Giglio, Michelle Gwinn; Hannick, Linda; Wortman, Jennifer] J Craig Venter Inst, Rockville, MD USA. [Aslett, Martin; Berriman, Matthew; Wood, Valerie] Wellcome Trust Sanger Inst, Hinxton, England. [Jacob, Howard; Laulederkind, Stan; Petri, Victoria; Shimoyama, Mary; Smith, Jennifer; Twigger, Simon] Med Coll Wisconsin, RGD, Milwaukee, WI 53226 USA. [Jaiswal, Pankaj] Cornell Univ, Dept Plant Breeding, Ithaca, NY USA. [Seigfried, Trent] UDSA, ARS, MaizeGDB, Ames, IA USA. [Howe, Doug; Westerfield, Monte] Univ Oregon, ZFIN, Eugene, OR 97403 USA. [Collmer, Candace] Wells Coll, PAMGO, Aurora, NY USA. [Feltrin, Erika; Valle, Giorgio] Univ Padua, CRIBI, I-35100 Padua, Italy. [Bromberg, Susan; Burgess, Shane; McCarthy, Fiona] Mississippi State Univ, Mississippi State, MS 39762 USA. EM midori@ebi.ac.uk RI Berriman, Matthew/A-7618-2011; Kibbe, Warren/B-2106-2010; Fey, Petra/O-5977-2015; Diehl, Alexander/G-9883-2016; Jaiswal, Pankaj/H-7599-2016; Huntley, Rachael/R-1036-2016; OI Kibbe, Warren/0000-0001-5622-7659; Fey, Petra/0000-0002-4532-2703; Diehl, Alexander/0000-0001-9990-8331; Jaiswal, Pankaj/0000-0002-1005-8383; Huntley, Rachael/0000-0001-6718-3559; VALLE, GIORGIO/0000-0003-4377-5685 NR 18 TC 228 Z9 237 U1 5 U2 29 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0305-1048 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PD JAN PY 2008 VL 36 SI SI BP D440 EP D444 DI 10.1093/nar/gkm883 PG 5 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 253VJ UT WOS:000252545400079 ER PT J AU Kuiken, C Hraber, P Thurmond, J Yusim, K AF Kuiken, Carla Hraber, Peter Thurmond, James Yusim, Karina TI The hepatitis C sequence database in Los Alamos SO NUCLEIC ACIDS RESEARCH LA English DT Article ID VIRUS GENOTYPES; SYSTEM AB The hepatitis C virus (HCV) is a significant public health threat worldwide. The virus is highly variable and evolves rapidly, making it an elusive target for the immune system and for vaccine and drug design. Presently, similar to 50 000 HCV sequences have been published. A central website that provides annotated sequences and analysis tools will be helpful to HCV scientists worldwide. The HCV sequence database collects and annotates sequence data, and provides them to the public via a website that contains a user-friendly search interface and a large number of sequence analysis tools, following the model of the highly regarded and widely used Los Alamos HIV database. The HCV website can be accessed via http://hcv.lanl.gov and http://hcv-db.org. C1 [Kuiken, Carla; Hraber, Peter; Thurmond, James; Yusim, Karina] Los Alamos Natl Lab, HCV Database, Los Alamos, NM 87545 USA. RP Kuiken, C (reprint author), Los Alamos Natl Lab, HCV Database, Los Alamos, NM 87545 USA. EM kuiken@lanl.gov OI Hraber, Peter/0000-0002-2920-4897 NR 17 TC 52 Z9 53 U1 0 U2 2 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0305-1048 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PD JAN PY 2008 VL 36 SI SI BP D512 EP D516 DI 10.1093/nar/gkm962 PG 5 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 253VJ UT WOS:000252545400091 PM 18025038 ER PT J AU Liolios, K Mavromatis, K Tavernarakis, N Kyrpides, NC AF Liolios, Konstantinos Mavromatis, Konstantinos Tavernarakis, Nektarios Kyrpides, Nikos C. TI The Genomes On Line Database (GOLD) in 2007: status of genomic and metagenomic projects and their associated metadata SO NUCLEIC ACIDS RESEARCH LA English DT Article ID SEQUENCE DATABASE; WORLD-WIDE; MONITOR AB The Genomes On Line Database (GOLD) is a comprehensive resource that provides information on genome and metagenome projects worldwide. Complete and ongoing projects and their associated metadata can be accessed in GOLD through pre-computed lists and a search page. As of September 2007, GOLD contains information on more than 2900 sequencing projects, out of which 639 have been completed and their sequence data deposited in the public databases. GOLD continues to expand with the goal of providing metadata information related to the projects and the organisms/environments towards the Minimum Information about a Genome Sequence (MIGS) guideline. GOLD is available at http://www.genomesonline.org and has a mirror site at the Institute of Molecular Biology and Biotechnology, Crete, Greece at http://gold.imbb.forth.gr/. C1 [Mavromatis, Konstantinos; Kyrpides, Nikos C.] Joint Genome Inst, Genome Biol Program, Walnet Creek, CA USA. [Liolios, Konstantinos] Univ Chicago, Dept Med, Chicago, IL 60637 USA. [Tavernarakis, Nektarios] Fdn Res & Technol, Inst Mol Biol & Biotechnol, Iraklion, Crete, Greece. RP Kyrpides, NC (reprint author), Joint Genome Inst, Genome Biol Program, 2800 Mitchell Dr, Walnet Creek, CA USA. EM nckyrpides@lbl.gov RI Tavernarakis, Nektarios/B-9684-2013; Kyrpides, Nikos/A-6305-2014 OI Tavernarakis, Nektarios/0000-0002-5253-1466; Kyrpides, Nikos/0000-0002-6131-0462 NR 17 TC 249 Z9 259 U1 0 U2 12 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0305-1048 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PD JAN PY 2008 VL 36 SI SI BP D475 EP D479 DI 10.1093/nar/gkm884 PG 5 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 253VJ UT WOS:000252545400085 PM 17981842 ER PT J AU Markowitz, VM Szeto, E Palaniappan, K Grechkin, Y Chu, K Chen, IMA Dubchak, I Anderson, I Lykidis, A Mavromatis, K Ivanova, NN Kyrpides, NC AF Markowitz, Victor M. Szeto, Ernest Palaniappan, Krishna Grechkin, Yuri Chu, Ken Chen, I-Min A. Dubchak, Inna Anderson, Iain Lykidis, Athanasios Mavromatis, Konstantinos Ivanova, Natalia N. Kyrpides, Nikos C. TI The integrated microbial genomes (IMG) system in 2007: data content and analysis tool extensions SO NUCLEIC ACIDS RESEARCH LA English DT Article ID PROTEIN FAMILIES; NCBI AB The integrated microbial genomes (IMG) system is a data management, analysis and annotation platform for all publicly available genomes. IMG contains both draft and complete JGI microbial genomes integrated with all other publicly available genomes from all three domains of life, together with a large number of plasmids and viruses. IMG provides tools and viewers for analyzing and annotating genomes, genes and functions, individually or in a comparative context. Since its first release in 2005, IMGs data content and analytical capabilities have been constantly expanded through quarterly releases. IMG is provided by the DOE-Joint Genome Institute (JGI) and is available from http://img.jgi.doe.gov. C1 [Markowitz, Victor M.; Szeto, Ernest; Palaniappan, Krishna; Grechkin, Yuri; Chu, Ken; Chen, I-Min A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA. [Dubchak, Inna] Univ Calif Berkeley, Lawrence Berkeley Lab, Genom Div, Berkeley, CA 94720 USA. [Anderson, Iain; Lykidis, Athanasios; Mavromatis, Konstantinos; Ivanova, Natalia N.; Kyrpides, Nikos C.] Joint Genome Inst, Dept Energy, Genome Biol Program, Walnut Creek, CA USA. RP Kyrpides, NC (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM nckyrpides@lbl.gov RI Kyrpides, Nikos/A-6305-2014 OI Kyrpides, Nikos/0000-0002-6131-0462 NR 22 TC 142 Z9 143 U1 2 U2 7 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0305-1048 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PD JAN PY 2008 VL 36 SI SI BP D528 EP D533 DI 10.1093/nar/gkm846 PG 6 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 253VJ UT WOS:000252545400095 PM 17933782 ER PT J AU Markowitz, VM Ivanova, NN Szeto, E Palaniappan, K Chu, K Dalevi, D Chen, IMA Grechkin, Y Dubchak, I Anderson, I Lykidis, A Mavromatis, K Hugenholtz, P Kyrpides, NC AF Markowitz, Victor M. Ivanova, Natalia N. Szeto, Ernest Palaniappan, Krishna Chu, Ken Dalevi, Daniel Chen, I-Min A. Grechkin, Yuri Dubchak, Inna Anderson, Iain Lykidis, Athanasios Mavromatis, Konstantinos Hugenholtz, Philip Kyrpides, Nikos C. TI IMG/M: a data management and analysis system for metagenomes SO NUCLEIC ACIDS RESEARCH LA English DT Article ID MICROBIAL COMMUNITIES; PROTEIN FAMILIES; GUT MICROBIOME; GENOMES AB IMG/M is a data management and analysis system for microbial community genomes (metagenomes) hosted at the Department of Energys (DOE) Joint Genome Institute (JGI). IMG/M consists of metagenome data integrated with isolate microbial genomes from the Integrated Microbial Genomes (IMG) system. IMG/M provides IMGs comparative data analysis tools extended to handle metagenome data, together with metagenome-specific analysis tools. IMG/M is available at http://img.jgi.doe.gov/m. C1 [Markowitz, Victor M.; Szeto, Ernest; Palaniappan, Krishna; Chu, Ken; Dalevi, Daniel; Chen, I-Min A.; Grechkin, Yuri] Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA. [Dubchak, Inna] Univ Calif Berkeley, Lawrence Berkeley Lab, Genome Div, Berkeley, CA 94720 USA. [Hugenholtz, Philip] Joint Genome Inst, Microbial Ecol Program, Dept Energy, Walnut Creek, CA USA. [Ivanova, Natalia N.; Anderson, Iain; Lykidis, Athanasios; Mavromatis, Konstantinos; Kyrpides, Nikos C.] Joint Genome Inst, Genome Biol Program, Dept Energy, Walnut Creek, CA USA. RP Kyrpides, NC (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Biol Data Management & Technol Ctr, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM nckyrpides@lbl.gov RI Hugenholtz, Philip/G-9608-2011; Kyrpides, Nikos/A-6305-2014; OI Kyrpides, Nikos/0000-0002-6131-0462; hugenholtz, philip/0000-0001-5386-7925 NR 18 TC 193 Z9 196 U1 3 U2 24 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0305-1048 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PD JAN PY 2008 VL 36 SI SI BP D534 EP D538 DI 10.1093/nar/gkm869 PG 5 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 253VJ UT WOS:000252545400096 PM 17932063 ER PT J AU Squires, B Macken, C Garcia-Sastre, A Godbole, S Noronha, J Hunt, V Chang, R Larsen, CN Klem, E Biersack, K Scheuermann, RH AF Squires, Burke Macken, Catherine Garcia-Sastre, Adolfo Godbole, Shubhada Noronha, Jyothi Hunt, Victoria Chang, Roger Larsen, Christopher N. Klem, Ed Biersack, Kevin Scheuermann, Richard H. TI BioHealthBase: informatics support in the elucidation of influenza virus hostpathogen interactions and virulence SO NUCLEIC ACIDS RESEARCH LA English DT Article ID MODEL AB The BioHealthBase Bioinformatics Resource Center (BRC) (http://www.biohealthbase.org) is a public bioinformatics database and analysis resource for the study of specific biodefense and public health pathogensInfluenza virus, Francisella tularensis, Mycobacterium tuberculosis, Microsporidia species and ricin toxin. The BioHealthBase serves as an extensive integrated repository of data imported from public databases, data derived from various computational algorithms and information curated from the scientific literature. The goal of the BioHealthBase is to facilitate the development of therapeutics, diagnostics and vaccines by integrating all available data in the context of hostpathogen interactions, thus allowing researchers to understand the root causes of virulence and pathogenicity. Genome and protein annotations can be viewed either as formatted text or graphically through a genome browser. 3D visualization capabilities allow researchers to view proteins with key structural and functional features highlighted. Influenza virus hostpathogen interactions at the molecular/cellular and systemic levels are represented. Host immune response to influenza infection is conveyed through the display of experimentally determined antibody and T-cell epitopes curated from the scientific literature or as derived from computational predictions. At the molecular/cellular level, the BioHealthBase BRC has developed biological pathway representations relevant to influenza virus hostpathogen interaction in collaboration with the Reactome database (http://www.reactome.org). C1 [Squires, Burke; Godbole, Shubhada; Noronha, Jyothi; Hunt, Victoria; Chang, Roger; Scheuermann, Richard H.] Univ Texas SW Med Ctr Dallas, Dallas, TX 75390 USA. [Macken, Catherine] Los Alamos Natl Lab, Los Alamos, NM USA. [Garcia-Sastre, Adolfo] Mt Sinai Sch Med, New York, NY USA. [Larsen, Christopher N.] Vecna Technol, College Pk, MD USA. [Klem, Ed; Biersack, Kevin] Northrop Grumman IT, Rockville, MD USA. RP Scheuermann, RH (reprint author), Univ Texas SW Med Ctr Dallas, Dallas, TX 75390 USA. EM richard.scheuermann@utsouthwestern.edu OI Garcia-Sastre, Adolfo/0000-0002-6551-1827; Scheuermann, Richard/0000-0003-1355-892X; Squires, R Burke/0000-0001-9666-6285; Larsen, Christopher N/0000-0002-1051-5767 FU NIAID NIH HHS [N01-AI40041, N01AI40041] NR 15 TC 52 Z9 52 U1 1 U2 3 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0305-1048 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PD JAN PY 2008 VL 36 SI SI BP D497 EP D503 DI 10.1093/nar/gkm905 PG 7 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 253VJ UT WOS:000252545400089 PM 17965094 ER PT J AU Su, C Peregrin-Alvarez, JM Butland, G Phanse, S Fong, V Emili, A Parkinson, J AF Su, Chong Peregrin-Alvarez, Jose M. Butland, Gareth Phanse, Sadhna Fong, Vincent Emili, Andrew Parkinson, John TI Bacteriome.org - an integrated protein interaction database for E-coli SO NUCLEIC ACIDS RESEARCH LA English DT Article ID SACCHAROMYCES-CEREVISIAE; INTERACTION NETWORKS; INTERACTION MAP; COMPLEXES; CYTOSCAPE; PROFILES; GENES; K-12 AB High throughput methods are increasingly being used to examine the functions and interactions of gene products on a genome-scale. These include systematic large-scale proteomic studies of protein complexes and proteinprotein interaction networks, functional genomic studies examining patterns of gene expression and comparative genomics studies examining patterns of conservation. Since these datasets offer different yet highly complementary perspectives on cell behavior it is expected that integration of these datasets will lead to conceptual advances in our understanding of the fundamental design and evolutionary principles that underlie the organization and function of proteins within biochemical pathways. Here we present Bacteriome.org, a resource that combines locally generated interaction and evolutionary datasets with a previously generated knowledgebase, to provide an integrated view of the Escherichia coli interactome. Tools are provided which allow the user to select and visualize functional, evolutionary and structural relationships between groups of interacting proteins and to focus on genes of interest. Currently the database contains three interaction datasets: a functional dataset consisting of 3989 interactions between 1927 proteins; a core high quality experimental dataset of 4863 interactions between 1100 proteins and an extended experimental dataset of 9860 interactions between 2131 proteins. Bacteriome.org is available online at http://www.bacteriome.org. C1 [Su, Chong; Peregrin-Alvarez, Jose M.; Parkinson, John] Hosp Sick Children, Toronto, ON M5G 1X8, Canada. [Peregrin-Alvarez, Jose M.] Univ Malaga, Dept Mol Biol & Biochem, E-29071 Malaga, Spain. [Butland, Gareth; Phanse, Sadhna; Fong, Vincent; Emili, Andrew] Univ Toronto, Donnelly Ctr Cellular & Biomol Res, Toronto, ON M5S 3E1, Canada. [Butland, Gareth] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA. [Emili, Andrew; Parkinson, John] Univ Toronto, Dept Mol & Med Genet, Toronto, ON M5S 1A1, Canada. [Parkinson, John] Univ Toronto, Dept Biochem, Toronto, ON M5S 1A1, Canada. RP Parkinson, J (reprint author), Hosp Sick Children, 555 Univ Ave, Toronto, ON M5G 1X8, Canada. EM jparkin@sickkids.ca RI Parkinson, John/A-4424-2008; OI Parkinson, John/0000-0001-9815-1189; Peregrin-Alvarez, Jose M/0000-0002-7184-832X NR 26 TC 31 Z9 32 U1 0 U2 1 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0305-1048 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PD JAN PY 2008 VL 36 SI SI BP D632 EP D636 DI 10.1093/nar/gkm807 PG 5 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 253VJ UT WOS:000252545400113 PM 17942431 ER PT J AU Chenna, A Gupta, RC Bonala, RR Johnson, F Hang, B AF Chenna, Ahmed Gupta, Ramesh C. Bonala, Radha R. Johnson, Francis Hang, Bo TI Synthesis of the fully protected phosphoramidite of the benzene-DNA adduct, N(2)-(4-hydroxyphenyl)-2 '-deoxyguanosine and incorporation of the later into DNA oligomers SO NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS LA English DT Article DE benzene DNA adduct; hydroquinone; p-benzoquinone; buchwald-hartwig reaction; N(2)-(4-hydroxyphenyl)-2 '-deoxyguanosine ID SITE-SPECIFIC INCORPORATION; HUMAN AP ENDONUCLEASE; P-BENZOQUINONE; METABOLITES; OLIGONUCLEOTIDES; CELLS; IDENTIFICATION; HYDROQUINONE; 3'-PHOSPHATE; CLEAVAGE AB N(2)-(4-Hydroxyphenyl)-2'-deoxyguanosine-5'-O-DMT-3'-phosphoramidite has been synthesized and used to incorporate the N(2)-(4-hydroxyphenyl)-2'-dG (N(2)-4-HOPh-dG) into DNA, using solid-state synthesis technology. The key step to obtaining the xenonucleoside is a palladium (Xantphos-chelated) catalyzed N(2)-arylation (Buchwald-Hartwig reaction) of a fully protected 2'-deoxyguanosine derivative by 4-isobutyryloxybromobenzene. The reaction proceeded in good yield and the adduct was converted to the required 5'-O-DMT-3'-O-phosphoramidite by standard methods. The latter was used to synthesize oligodeoxynucleotides in which the N(2)-4-HOPh-dG adduct was incorporated site-specifically. The oligomers were purified by reverse-phase HPLC. Enzymatic hydrolysis and HPLC analysis confirmed the presence of this adduct in the oligomers. C1 [Hang, Bo] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Dept Genome Stabil, Berkeley, CA 94720 USA. [Gupta, Ramesh C.; Bonala, Radha R.; Johnson, Francis] Chem Master Int Inc, Stony Brook, NY USA. [Chenna, Ahmed] Monogram Biosci Inc, San Francisco, CA USA. RP Hang, B (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Dept Genome Stabil, Berkeley, CA 94720 USA. EM Bo_hang@lbl.gov FU NCI NIH HHS [CA72079] NR 31 TC 2 Z9 2 U1 1 U2 4 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 1525-7770 J9 NUCLEOS NUCLEOT NUCL JI Nucleosides Nucleotides Nucleic Acids PY 2008 VL 27 IS 8 BP 979 EP 991 DI 10.1080/15257770802258034 PG 13 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 336NN UT WOS:000258371000006 PM 18696366 ER PT J AU Carrington, DB AF Carrington, David B. TI A parallel first-order spherical harmonics (P-1) matrix-free method for radiative transport SO NUMERICAL HEAT TRANSFER PART B-FUNDAMENTALS LA English DT Article ID TIME-INTEGRATION METHODS; HEAT-TRANSFER; DIFFUSION; MODEL AB Radiative transfer in participating media is modeled using a first-order spherical harmonics (P-1), or its degenerate form, diffusion. The equations are discretized on an unstructured grid. The method uses a matrix-free algorithm employing an iterative solver from the Preconditioned Conjugate Gradient (PCG) solver package developed by Joubert and Carey [1]. The algorithm couples radiation transport and conduction, by casting them into a Picard iteration. Compared are solutions for two participating media problems indicating the method to be first-order accurate in time. Parallel scaling of the matrix-free method with use of in-situ preconditioners, symmetric successive overrelaxation (SSOR) and block Jacobi, are reported. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Carrington, DB (reprint author), Los Alamos Natl Lab, Div Theoret, T-3 Fluid Dynam,MS-B216,POB 1663, Los Alamos, NM 87545 USA. EM dcrrngtn@lanl.gov NR 27 TC 1 Z9 1 U1 0 U2 0 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA SN 1040-7790 EI 1521-0626 J9 NUMER HEAT TR B-FUND JI Numer Heat Tranf. B-Fundam. PY 2008 VL 53 IS 2 BP 97 EP 117 DI 10.1080/10407790701703427 PG 21 WC Thermodynamics; Mechanics SC Thermodynamics; Mechanics GA 251DS UT WOS:000252352100001 ER PT J AU Glaze, DJ Yoon, SS Hewson, JC DesJardin, PE AF Glaze, David J. Yoon, Sam S. Hewson, John C. DesJardin, Paul E. TI Modeling transport phenomena of high mass loadings with applications to fire suppression SO NUMERICAL HEAT TRANSFER PART B-FUNDAMENTALS LA English DT Article ID NONSPHERICAL PARTICLES; VISCOUS-FLUID; WATER SPRAY; PREDICTION; MOTION; SIMULATION; SPHERE; DRAG; FLOW AB Improvements to the existing Eulerian-Lagrangian two-phase dilute spray model, referred to as Vulcan, are required in order to handle high mass loadings or very small solid particles. Such flows are relevant to modern fire-suppression techniques among other applications. These improvements include developing a new treatment for efficiently integrating small particles, a new subcycling time-step selection algorithm for the time-splitting solution technique, and a new treatment for placement of the two-way coupling source terms on the fluid grid. Despite the added complexity of these modifications, performance tuning of the code was also performed so that the solution speed is either equivalent to or faster than the previous code, depending on particle size. The new algorithms are applied to predicting suppressant distribution from a Goodrich-244 fire-suppression system in a simulated aircraft cargo bay. Results using these new algorithms indicate that the larger particles found in the Goodrich-244 suppressant disperse more uniformly throughout the aircraft cargo bay, although a large fraction of these particles adhere to the side walls before being delivered to the fire. Buoyancy of the hot combustion products was found to inhibit particle dispersion, and to generate large unwanted convective heat fluxes to the roof of the cargo bay. C1 [Yoon, Sam S.] Korea Univ, Dept Mech Engn, Seoul 136713, South Korea. [Glaze, David J.; Hewson, John C.] Sandia Natl Labs, Albuquerque, NM 87185 USA. [DesJardin, Paul E.] SUNY Buffalo, Dept Mech & Aerosp Engn, Buffalo, NY 14260 USA. RP Yoon, SS (reprint author), Korea Univ, Dept Mech Engn, Anamdong,5-Ga, Seoul 136713, South Korea. EM skyoon@korea.ac.kr NR 24 TC 3 Z9 3 U1 0 U2 4 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 1040-7790 J9 NUMER HEAT TR B-FUND JI Numer Heat Tranf. B-Fundam. PY 2008 VL 53 IS 2 BP 118 EP 142 DI 10.1080/10407790701702999 PG 25 WC Thermodynamics; Mechanics SC Thermodynamics; Mechanics GA 251DS UT WOS:000252352100002 ER PT B AU Bonfiglioli, A Carpentieri, B Sosonkina, M AF Bonfiglioli, A. Carpentieri, B. Sosonkina, M. BE Kunisch, K Of, G Steinbach, O TI Performance Analysis of Parallel Algebraic Preconditioners for Solving the BANS Equations Using Fluctuation Splitting Schemes SO NUMERICAL MATHEMATICS AND ADVANCED APPLICATIONS LA English DT Proceedings Paper CT 7th European Conference on Numerical Mathematics and Advanced Applications (ENUMATH 2007) CY SEP 10-14, 2007 CL Graz, AUSTRIA SP Austrian Minist Sci & Res, State Styria, Assoc Appl Math & Mech, Graz Univ Technol, Karl Franzens Univ Graz ID NAVIER-STOKES EQUATIONS AB We consider iterative solution strategies for solving the Reynolds-Favre averaged Navier-Stokes (RANS) equations on 2D and 3D flow configurations. The novelty of this study is the coupling of an hybrid class of methods for the space discretization, called Fluctuation Splitting (or residual distribution) schemes, and a fully coupled Newton algorithm for solving the RANS equations. This approach is particularly attractive for parallel computations because it gives rise to discretization matrices with a compact stencil resulting in a limited number of nonzero entries. In this paper, we present the solution approach and report on results of numerical experiments with particular emphasis on the design of preconditioners for the inner linear system, which is a critical computational issue of the iterative solution. C1 [Bonfiglioli, A.] Univ Basilicata, Dipto Ingn & Fis Ambiente, I-85100 Potenza, Italy. [Carpentieri, B.] Karl Franzens Univ Graz, Inst Math & Sci Comp, Graz, Austria. [Sosonkina, M.] Iowa State Univ, DOE, Ames Lab, Ames, IA USA. RP Bonfiglioli, A (reprint author), Univ Basilicata, Dipto Ingn & Fis Ambiente, I-85100 Potenza, Italy. EM ba001ing@unibas.it; bruno.carpentieri@uni-graz.at; masha@scl.ameslab.gov NR 9 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY BN 978-3-540-69776-3 PY 2008 BP 151 EP + DI 10.1007/978-3-540-69777-0_17 PG 2 WC Mathematics, Applied; Mathematics SC Mathematics GA BIN57 UT WOS:000261093100017 ER PT B AU Jordan, GC Fisher, RT Townsley, DM Calder, AC Graziani, C Asida, S Lamb, DQ Truran, JW AF Jordan, G. C. Fisher, R. T. Townsley, D. M. Calder, A. C. Graziani, C. Asida, S. Lamb, D. Q. Truran, J. W. BE Pogorelov, NV Audit, E Zank, GP TI Preliminary results of three-dimensional simulations of the deflagration phase of the gravitationally confined detonation model of type Ia supernovae SO NUMERICAL MODELING OF SPACE PLASMA FLOWS: ASTRONUM-2007 SE Astronomical Society of the Pacific Conference Series LA English DT Proceedings Paper CT 2nd International Conference on Numerical Modeling of Space Plasma Flows CY JUN 10-15, 2007 CL Paris, FRANCE SP Univ Calif Riverside, Inst Geophys & Planetary Phys, Univ French Commissariat Atom Energy, Lab Invest Fundamental Laws, Los Alamos Natl Lab, Inst Lasers & Plasmas, COSMO-GRID Project, Solana Sci Inc ID THERMONUCLEAR SUPERNOVAE; EXPLOSION; FLAMES; EVOLUTION; CODE AB We report the results of a series of three-dimensional (3-D) simulations of the deflagration phase of the gravitationally confined detonation mechanism for Type la supernovae. In this mechanism, ignition occurs at one or several off-center points, resulting in a burning bubble of hot ash that rises rapidly, breaks through the surface of the star, and collides at a point opposite breakout on the stellar surface. We find that detonation conditions are robustly reached in our 3-D simulations for a range of initial conditions and resolutions. C1 [Jordan, G. C.; Fisher, R. T.; Calder, A. C.; Graziani, C.; Lamb, D. Q.; Truran, J. W.] Univ Chicago, Ctr Astrophys Thermonucl Flashes, Chicago, IL 60637 USA. [Jordan, G. C.; Fisher, R. T.; Townsley, D. M.; Calder, A. C.; Graziani, C.; Lamb, D. Q.; Truran, J. W.] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA. [Townsley, D. M.] Univ Chicago, Joint Inst Nucl Astrophys, Chicago, IL 60637 USA. [Asida, S.] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel. [Lamb, D. Q.; Truran, J. W.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. [Truran, J. W.] Argonne Natl Lab, Argonne, IL 60439 USA. RP Jordan, GC (reprint author), Univ Chicago, Ctr Astrophys Thermonucl Flashes, Chicago, IL 60637 USA. EM gjordan@flash.uchicago.edu FU University of Chicago by the U.S Department of Energy (DOE) [B523820]; National Science Foundation [PHY 02-16783]; Office of Science of the U.S. Department of Energy [DE-AC03-76SF00098]; NSF [ST-0507456]; Argonne National Laboratory; DOE [W-31-109-ENG-38] FX The authors thank Nathan Hearn for discussions of this work and for his software analysis tools, which were invaluable in the preparation of this paper. The authors thank the code group in the Flash Center, especially Anshu Dubey, Lynn Reid, Paul Rich, Dan Sheeler, and Klaus Weide, for development of the code and for help in running our large simulations on uP at LLNL. We also thank Brad Gallagher and the visualization group in the Flash Center for creating the images used in Figures 1, 2, and 3, and the corresponding movies; and Hank Childs and the VisIt team at LLNL for help in using VisIt. Finally, we thank LLNL Computing for help in running our large simulations on uP at LLNL, and the NERSC support staff at LBNL for help in running them on Bassi and Seaborg. This work is supported in part at the University of Chicago by the U.S Department of Energy (DOE) under Contract B523820 to the ASC Alliances Center for Astrophysical Nuclear Flashes, and in part by the National Science Foundation under Grant PHY 02-16783 for the Frontier Center Joint Institute for Nuclear Astrophysics (JINA). This research used computational resources awarded under the INCITE program at LBNL NERSC, which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC03-76SF00098. ACC acknowledges support from NSF Grant ST-0507456. JWT acknowledges support from Argonne National Laboratory, which is operated under DOE Contract No. W-31-109-ENG-38. NR 29 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 978-1-58381-333-1 J9 ASTR SOC P PY 2008 VL 385 BP 97 EP + PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BHQ86 UT WOS:000255550100015 ER PT B AU Dubey, A Fisher, R Graziani, C Jordan, GC Lamb, DQ Reid, LB Rich, P Sheeler, D Townsley, D Weide, K AF Dubey, A. Fisher, R. Graziani, C. Jordan, G. C. Lamb, D. Q. Reid, L. B. Rich, P. Sheeler, D. Townsley, D. Weide, K. BE Pogorelov, NV Audit, E Zank, GP TI Challenges of extreme computing using the FLASH code SO NUMERICAL MODELING OF SPACE PLASMA FLOWS: ASTRONUM-2007 SE Astronomical Society of the Pacific Conference Series LA English DT Proceedings Paper CT 2nd International Conference on Numerical Modeling of Space Plasma Flows CY JUN 10-15, 2007 CL Paris, FRANCE SP Univ Calif Riverside, Inst Geophys & Planetary Phys, Univ French Commissariat Atom Energy, Lab Invest Fundamental Laws, Los Alamos Natl Lab, Inst Lasers & Plasmas, COSMO-GRID Project, Solana Sci Inc ID DELAYED DETONATION; IA SUPERNOVAE; SIMULATIONS; EXPLOSION; MODELS AB FLASH is a modular, adaptive mesh, parallel simulation framework capable of handling the compressible, reactive flows found in many astrophysical environments. FLASH was recently used in a series of three-dimensional simulations of the gravitationally confined detonation mechanism for Type la supernovae on IBM SP-5 platforms at LLNL and NERSC on up to 768 processors. The simulations used multiple physics components, such as hydrodynamics, Newtonian self-gravity, and a sub-grid flame model on an Eulerian adaptive grid. The simulations also used Lagrangian tracer particles to track the nucleosynthetic history. These simulations were a huge challenge not only because of the computational complexity of the problem, but also because of resource constraints. Some components, such as the gravity solver and flame model, had to be algorithmically optimized to increase time efficiency. Other components, such as the tracer particles distribution, grid management, and refinement patterns, were carefully tuned to optimize the memory usage and parallel efficiency. C1 [Dubey, A.; Fisher, R.; Graziani, C.; Jordan, G. C.; Lamb, D. Q.; Reid, L. B.; Rich, P.; Weide, K.] Univ Chicago, Ctr Astrophys Thermonucl Flashes, Chicago, IL 60637 USA. [Fisher, R.; Graziani, C.; Jordan, G. C.; Lamb, D. Q.; Townsley, D.] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA. [Townsley, D.] Univ Chicago, Joint Inst Nucl Astrophys, Chicago, IL 60637 USA. [Sheeler, D.] Argonne Natl Lab, Argonne, IL USA. RP Dubey, A (reprint author), Univ Chicago, Ctr Astrophys Thermonucl Flashes, Chicago, IL 60637 USA. EM a-dubey1@uchicago.edu RI Reid, Lynn/A-7364-2011 FU U.S. Department of Energy [B523820] FX This work is supported by the U.S. Department of Energy under Grant No. B523820 to the Center for Astrophysical Thermonuclear Flashes at the University of Chicago. NR 16 TC 39 Z9 39 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA BN 978-1-58381-333-1 J9 ASTR SOC P PY 2008 VL 385 BP 145 EP + PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BHQ86 UT WOS:000255550100022 ER PT B AU Li, ST AF Li, Shengtai BE Pogorelov, NV Audit, E Zank, GP TI A simple dual implementation to track pressure accurately SO NUMERICAL MODELING OF SPACE PLASMA FLOWS: ASTRONUM-2007 SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 2nd International Conference on Numerical Modeling of Space Plasma Flows CY JUN 10-15, 2007 CL Paris, FRANCE SP Univ Calif Riverside, Inst Geophys & Planetary Phys, Univ French Commissariat Atom Energy, Lab Invest Fundamental Laws, Los Alamos Natl Lab, Inst Lasers & Plasmas, COSMO-GRID Project, Solana Sci Inc ID APPROXIMATE RIEMANN SOLVER; IDEAL MAGNETOHYDRODYNAMICS; HYDRODYNAMICS; SCHEMES AB We propose a new and simple implementation to solve the entropy density equation or internal energy equation while achieving an accurate solution for the pressure in hydrodynamics (HD) and magneto-hydrodynamics (MHD) simulations. The extra computational cost for the new method is negligible without sacrificing its effectiveness to maintain positive pressure. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Li, ST (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. NR 8 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 978-1-58381-333-1 J9 ASTR SOC P PY 2008 VL 385 BP 273 EP 278 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BHQ86 UT WOS:000255550100039 ER PT B AU Weber, GH Beckner, VE Childs, H Ligocki, TJ Miller, MC Van Straaleni, B Bethel, EW AF Weber, G. H. Beckner, V. E. Childs, H. Ligocki, T. J. Miller, M. C. Van Straaleni, B. Bethel, E. W. BE Pogorelov, NV Audit, E Zank, GP TI Visualization of scalar adaptive mesh refinement data SO NUMERICAL MODELING OF SPACE PLASMA FLOWS: ASTRONUM-2007 SE Astronomical Society of the Pacific Conference Series LA English DT Proceedings Paper CT 2nd International Conference on Numerical Modeling of Space Plasma Flows CY JUN 10-15, 2007 CL Paris, FRANCE SP Univ Calif Riverside, Inst Geophys & Planetary Phys, Univ French Commissariat Atom Energy, Lab Invest Fundamental Laws, Los Alamos Natl Lab, Inst Lasers & Plasmas, COSMO-GRID Project, Solana Sci Inc ID MARCHING CUBES; VOLUME DATA; SURFACES AB Adaptive Mesh Refinement (AMR) is a highly effective computation method for simulations that span a large range of spatiotemporal scales, such as astrophysical simulations, which must accommodate ranges from interstellar to sub-planetary. Most mainstream visualization tools still lack support for AMR grids as a first class data type and AMR code teams use custom built applications for AMR visualization. The Department of Energy's (DOE's) Science Discovery through Advanced Computing (SciDAC) Visualization and Analytics Center for Enabling Technologies (VACET) is currently working on extending VisIt, which is an open source visualization tool that accommodates AMR as a first-class data type. These efforts will bridge the gap between general-purpose visualization applications and highly specialized AMR visual analysis applications. Here, we give an overview of the state of the art in AMR scalar data visualization research. C1 [Weber, G. H.; Beckner, V. E.; Ligocki, T. J.; Van Straaleni, B.; Bethel, E. W.] Lawrence Berkeley Natl Lab, Computat Res Div, Berkeley, CA 94720 USA. [Miller, M. C.] Lawrence Livermore Natl Lab, Res Dept, Livermore, CA 94551 USA. [Miller, M. C.] Lawrence Livermore Natl Lab, Comp Applicat, Livermore, CA 94551 USA. RP Weber, GH (reprint author), Lawrence Berkeley Natl Lab, Computat Res Div, Berkeley, CA 94720 USA. FU Director, Office of Advanced Scientific Computing Research; Office of Science; U.S. Department of Energy [DE-AC02-05CH11231]; Scientific Discovery through Advanced Computing (SciDAC) program's Visualization; Analytics Center for Enabling Technologies (VACET) FX This work was supported by the Director, Office of Advanced Scientific Computing Research, Office of Science, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231 through the Scientific Discovery through Advanced Computing (SciDAC) programs Visualization and Analytics Center for Enabling Technologies (VACET). We thank the members of the LBNL Visualization Group, the LBNL ANAG, the LBNL CCSE, and the VisIt development team. NR 33 TC 1 Z9 1 U1 0 U2 1 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA BN 978-1-58381-333-1 J9 ASTR SOC P PY 2008 VL 385 BP 309 EP + PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BHQ86 UT WOS:000255550100044 ER PT J AU Battistoni, G Broggi, F Brugger, M Campanella, M Carboni, M Cerutti, F Colleoni, P D'Ambrosio, C Empl, A Fasso, A Ferrari, A Ferrari, A Gadioli, E Lantz, M Lee, K Lukasik, G Mairani, A Margiotta, A Mauri, M Morone, MC Mostacci, A Muraro, S Parodi, K Patera, V Pelliccioni, M Pinsky, L Ranft, J Roesler, S Rollet, S Sala, PR Sarchiapone, L Stoli, M Smirnov, G Sommerer, F Theis, C Trovati, S Villari, R Vinke, H Vlachoudis, V Wilson, T Zapp, N AF Battistoni, G. Broggi, F. Brugger, M. Campanella, M. Carboni, M. Cerutti, F. Colleoni, P. D'Ambrosio, C. Empl, A. Fasso, A. Ferrari, Al Ferrari, An Gadioli, E. Lantz, M. Lee, K. Lukasik, G. Mairani, A. Margiotta, A. Mauri, M. Morone, M. C. Mostacci, A. Muraro, S. Parodi, K. Patera, V. Pelliccioni, M. Pinsky, L. Ranft, J. Roesler, S. Rollet, S. Sala, P. R. Sarchiapone, L. Stoli, M. Smirnov, G. Sommerer, F. Theis, C. Trovati, S. Villari, R. Vinke, H. Vlachoudis, V. Wilson, T. Zapp, N. TI The FLUKA code and its use in hadron therapy SO NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA C-COLLOQUIA ON PHYSICS LA English DT Article ID HEAVY-ION RADIOTHERAPY; PROTON THERAPY; BEAMS; MODEL; VERIFICATION; OPTIMIZATION; DYNAMICS AB FLUKA is a multipurpose Monte Carto code describing transport and interaction with matter of a, large variety of particles over a wide energy range ill complex geometries. FLUKA is successfully applied ill several fields, including, but not only particle physics, cosmic-ray physics, dosimetry, radioprotection, hadron therapy. space radiation, accelerator design and neutronics. Here we briefly review recent model developments and provide examples of applications to hadron therapy, including calculation of physical and biological dose for comparison with analytical treatment planning engines as well as beta(+)-activation for therapy monitoring by means of positron emission tomography. C1 [Battistoni, G.; Broggi, F.; Campanella, M.; Colleoni, P.; Gadioli, E.; Muraro, S.; Sala, P. R.] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy. [Brugger, M.; Cerutti, F.; Ferrari, Al; Lukasik, G.; Mauri, M.; Roesler, S.; Sarchiapone, L.; Smirnov, G.; Sommerer, F.; Theis, C.; Trovati, S.; Vinke, H.; Vlachoudis, V.] CERN, Geneva, Switzerland. [Campanella, M.; Carboni, M.] GARR Consortium, Rome, Italy. [Carboni, M.; D'Ambrosio, C.; Mostacci, A.; Patera, V.; Pelliccioni, M.; Villari, R.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, RM, Italy. [Colleoni, P.; Gadioli, E.] Univ Milan, Milan, Italy. [D'Ambrosio, C.] Univ Roma 1, Rome, Italy. [Empl, A.; Pinsky, L.] Univ Houston, Houston, TX USA. [Fasso, A.] SLAC, Stanford, CA USA. [Ferrari, An] CNAO, Pavia, Italy. [Lantz, M.] Chalmers, S-41296 Gothenburg, Sweden. [Lee, K.; Wilson, T.; Zapp, N.] NASA, Houston, TX USA. [Mairani, A.] DKFZ, Heidelberg, Germany. [Mairani, A.; Parodi, K.] HIT, Heidelberg, Germany. [Margiotta, A.; Stoli, M.] Univ Bologna, Bologna, Italy. [Margiotta, A.; Stoli, M.] Ist Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, Italy. [Morone, M. C.] Univ Roma Tor Vergata, Rome, Italy. [Morone, M. C.] Ist Nazl Fis Nucl, Sez Roma 2, Rome, Italy. [Mostacci, A.; Patera, V.] Univ Roma La Sapienza, Rome, Italy. [Ranft, J.] Univ Siegen, Siegen, Germany. [Villari, R.] ENEA, Frascati, RM, Italy. RP Battistoni, G (reprint author), Ist Nazl Fis Nucl, Sez Milano, Via Celoria 16, I-20133 Milan, Italy. RI sala, paola/E-2868-2013; Morone, Maria Cristina/P-4407-2016; Battistoni, Giuseppe/B-5264-2012; OI sala, paola/0000-0001-9859-5564; Morone, Maria Cristina/0000-0002-0200-0632; Battistoni, Giuseppe/0000-0003-3484-1724; , Sofia/0000-0002-4389-3641; Carboni, Massimo/0000-0003-4296-3799 FU INFN-CSN5 FX The work discussed here has been carried out in different collaborations with CERN, the Massachusetts General Hospital (MGH), the Heidelberg Ion Therapy Center (HIT), the Gesellschaft fur Schwerionenforschung (GSI), the Forschungszentrum Dresden-Rossendorf (FZD) and the University of Pavia. This work was partially supported by INFN-CSN5 (FLUKA2 experiment). NR 26 TC 7 Z9 7 U1 1 U2 9 PU SOC ITALIANA FISICA PI BOLOGNA PA VIA SARAGOZZA, 12, I-40123 BOLOGNA, ITALY SN 1124-1896 J9 NUOVO CIMENTO C JI Nuovo Cimento Soc. Ital. Fis. C-Colloq. Phys. PD JAN-FEB PY 2008 VL 31 IS 1 BP 69 EP 75 DI 10.1393/ncc/i2008-10281-9 PG 7 GA 369UJ UT WOS:000260719100008 ER PT J AU Williams, PT AF Williams, Paul T. TI Self-selection accounts for inverse association between weight and cardiorespiratory fitness SO OBESITY LA English DT Article ID PHYSICAL-ACTIVITY; FAMILIAL AGGREGATION; HERITAGE FAMILY; MALE RUNNERS; EXERCISE; HERITABILITY; WOMEN; AGE; ADIPOSITY; DISTANCE AB Background: Men and women who exercise regularly and who are physically fit tend to be leaner than those who are sedentary and not fit. Although exercise is known to attenuate weight gain and promote weight loss, there may also be a propensity for leaner men and women to choose to exercise vigorously (self-selection). Pre-exercise body weights have been shown to account for all the weight differences between fast and slow walkers, but seem to account for only a portion of the weight differences associated with walking distances. Whether these results apply to maximum exercise performance (i.e., cardiorespiratory fitness) as well as to doses of vigorous exercise (metabolic equivalents >6) remains to be determined. Objective: Assess whether the cross-sectional relationships of BMI to cardiorespiratory fitness and vigorous activity are explained by BMI prior to exercising. Methods and Procedures: Cross-sectional study of the relationships between cardiorespiratory fitness (running speed during 10 km foot race) and vigorous physical activity (weekly running distance) to current BMI (BMIcurrent) and BMI at the start of running (BMIstarting) in 44,370 male and 25,252 female participants of the National Runners' Health Study. Results: BMIstarting accounted entirely for the association between fitness and BMIcurrent in both sexes, but only a quarter of the association between vigorous physical activity levels and BMIcurrent in men. In women, BMIstarting accounted for 58% of the association between BMIcurrent and vigorous activity levels. Discussion: Self-selection based on pre-exercise BMI accounts entirely for the association found between fitness and BMI (and possibly a portion of other health outcomes). C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Donner Lab, Div Life Sci, Berkeley, CA 94720 USA. RP Williams, PT (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Donner Lab, Div Life Sci, Berkeley, CA 94720 USA. EM ptwilliams@lbl.gov FU NHLBI NIH HHS [HL-072110, HL-45652]; NIDDK NIH HHS [DK066738] NR 21 TC 12 Z9 12 U1 1 U2 1 PU NATURE PUBLISHING GROUP PI NEW YORK PA 75 VARICK STREET, 9TH FLOOR, NEW YORK, NY 10013-1917 USA SN 1930-7381 J9 OBESITY JI Obesity PD JAN PY 2008 VL 16 IS 1 BP 102 EP 106 DI 10.1038/oby.2007.5 PG 5 WC Endocrinology & Metabolism; Nutrition & Dietetics SC Endocrinology & Metabolism; Nutrition & Dietetics GA 253YU UT WOS:000252554300018 PM 18223620 ER PT S AU Davis, K Striegnitz, J AF Davis, Kei Striegnitz, Joerg BE Cebulla, M TI Multiparadigm programming in object-oriented languages: Current research SO OBJECT-ORIENTED TECHNOLOGY: ECOOP 2007 WORKSHOP READER SE Lecture Notes in Computer Science LA English DT Proceedings Paper CT 21st European Conference on Object-Oriented Programming (ECOOP 2007) CY JUL 30-AUG 03, 2007 CL Tech Univ Berlin, Berlin, GERMANY SP Inst Commun & Software Technol, AITO, ACM SIGPLAN, ACM SIGSOFT, Deutsch Telekom Labs, SAP, IBM, Google, Microsoft Res, ERCIM, dIsi aIti, sd&m HO Tech Univ Berlin DE object-oriented; multiparadigm; programming AB While 00 has become ubiquitously employed for design, implementation, and even conceptualization, many practitioners recognize the concomitant need for other programming paradigms according to problem domain. Nevertheless, the choice of a programming paradigm is strongly influenced by the supporting programming language facilities. In turn, choice of programming language is usually highly constrained by practical considerations. We seek answers to the question of how to address the need for other programming paradigms, or even domain specific languages, in the general context of 00 languages. It is clear that this field is yet nascent: novel, disparate approaches and techniques are still being discovered or invented, and this very novelty adds a significant element of intellectual entertainment. This article describes the cross section of research efforts reported at the workshop on Multiparadigm Programming in Object-Oriented Languages held at the 2007 European Conference on Object-Oriented Programming. C1 [Davis, Kei] Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. [Striegnitz, Joerg] Univ Appl Sci Regensburg, D-93053 Regensburg, Germany. RP Davis, K (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM kei.davis@lanl.gov; joerg.striegnitz@informatik.fh-regensburg.de NR 0 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 978-3-540-78194-3 J9 LECT NOTES COMPUT SC PY 2008 VL 4906 BP 13 EP + PG 2 WC Computer Science, Software Engineering; Computer Science, Theory & Methods SC Computer Science GA BHK34 UT WOS:000253835100003 ER PT J AU Maltrud, M Holloway, G AF Maltrud, Mathew Holloway, Greg TI Implementing biharmonic neptune in a global eddying ocean model SO OCEAN MODELLING LA English DT Article DE modelling; ocean circulation; eddy parameterization ID ARCTIC-OCEAN; TOPOGRAPHIC STRESS; CIRCULATION; PARAMETERIZATION; CURRENTS; WATERS AB Results are presented from a pair of global ocean circulation simulations whose horizontal resolution is fine enough to allow spontaneous formation of eddies. The only difference between the two runs is inclusion of a parameterization for the "neptune effect" [Holloway, G., 2004. From classical to statistical ocean dynamics. Surv. Geophys. 25, 203-219] in one of them, which tends to force the flow along local topographic contours. A Laplacian operator form of this force has been used for numerous studies with coarse (non-eddying) resolution models. For eddying resolutions, however, a biharmonic friction operator is commonly used to avoid strong damping at small scales. Here we extend the neptune parameterization to a biharmonic operator, and test how inclusion of neptune affects the fidelity of simulation. (C) 2007 Elsevier Ltd. All rights reserved. C1 [Maltrud, Mathew] Los Alamos Natl Lab, Climate Ocean & Sea Ice Modeling Project, Fluid Dynam Grp, Los Alamos, NM 87545 USA. [Holloway, Greg] Inst Ocean Sci, Dept Fisheries & Oceans, Sidney, BC V8L 4B2, Canada. RP Maltrud, M (reprint author), Los Alamos Natl Lab, Climate Ocean & Sea Ice Modeling Project, Fluid Dynam Grp, Los Alamos, NM 87545 USA. EM maltrud@lani.gov NR 27 TC 9 Z9 9 U1 0 U2 4 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 1463-5003 J9 OCEAN MODEL JI Ocean Model. PY 2008 VL 21 IS 1-2 BP 22 EP 34 DI 10.1016/j.ocemod.2007.11.003 PG 13 WC Meteorology & Atmospheric Sciences; Oceanography SC Meteorology & Atmospheric Sciences; Oceanography GA 275OS UT WOS:000254082100003 ER PT J AU Hunke, E Maltrud, M Hecht, M AF Hunke, Elizabeth Maltrud, Mathew Hecht, Matthew TI On the grid dependence of lateral mixing parameterizations for global ocean simulations SO OCEAN MODELLING LA English DT Article DE ocean circulation; tracers; modeling; mixing ID CIRCULATION MODELS; ARCTIC-OCEAN; TRACER TRANSPORTS; BOUNDARY CURRENT; HEAT-TRANSPORT; WATER; SENSITIVITY; RESOLUTION; VISCOSITY; EDDIES AB Using an ice-ocean coupled model on an eddy-admitting, global, 0.4 degrees mesh, we find that simulations of tracer properties and kinetic energy differ much more at high latitudes than at mid-to-low latitudes under different choices for the lateral tracer mixing parameterization, particularly between Gent and McWilliams (GM) mixing, which is Laplacian in form, and biharmonic tracer diffusion. Besides the more physical, rotated diffusivity used in GM, the differences in these two formulations can be traced to two effects, (1) scale selectivity, in which Laplacian forms damp wave energy more quickly than biharmonic mixing formulations, and (2) grid dependence of the diffusion coefficient, which is particularly important at high latitudes where the grid scale decreases dramatically on the sphere. This study explores some effects of these parameterization choices at high latitudes, including the anisotropic GM formulation. Regardless of the mixing parameterization chosen, future global simulations should take into account variations in grid cell area, in order to prevent diffusion from dominating advection in the evolution of high latitude tracers and circulation. (c) 2007 Elsevier Ltd. All rights reserved. C1 [Hunke, Elizabeth; Maltrud, Mathew; Hecht, Matthew] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Hunke, E (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. EM eclare@lanl.gov; maltrud@lanl.gov; mhecht@lanl.gov OI Hecht, Matthew/0000-0003-0946-4007 NR 43 TC 7 Z9 7 U1 0 U2 5 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 1463-5003 J9 OCEAN MODEL JI Ocean Model. PY 2008 VL 20 IS 2 BP 115 EP 133 DI 10.1016/j.ocemod.2007.06.010 PG 19 WC Meteorology & Atmospheric Sciences; Oceanography SC Meteorology & Atmospheric Sciences; Oceanography GA 263QK UT WOS:000253231400001 ER PT J AU Ozgokmen, TM Fischer, PF AF Ozgokmen, Tamay M. Fischer, Paul F. TI On the role of bottom roughness in overflows SO OCEAN MODELLING LA English DT Article ID SPECTRAL ELEMENT MODEL; SEA OUTFLOW PLUME; INTERNAL GRAVITY-WAVE; FREE SHEAR LAYERS; STRATIFIED ENVIRONMENTS; CONTINENTAL-SLOPE; TURBULENT ENTRAINMENT; VORTICITY DYNAMICS; DENSITY CURRENTS; DENMARK STRAIT AB Overflows play an important role in the downwelling limb of the oceanic thermohaline circulation. In light of the recognition that some overflows are not homogenous but exhibit a vertical density structure, and details of topography influence the pathways of some overflows, the impact of topographic roughness on the product property distribution is explored using the 3D non-hydrostatic spectral element model Nek5000. Numerical experiments are carried out by varying bottom roughness amplitude and ambient stratification parameters, in a regime where equilibrated product water masses are formed in a non-rotating environment. Our main finding is that bottom roughness can influence the overflow product distribution such that the highest salinity classes are removed and neutral buoyancy level is attained higher up in the stratified ambient water column. It is also shown that the form drag coefficients in overflows over rough bottom can be much larger than the skin drag coefficient over smooth bottom. To our knowledge, form drag has never been measured in oceanic overflows. As such, these numerical experiments imply that such measurements would be useful for a better understanding of overflow dynamics. It is also found that the ratio of source and product overflow mass transports is robust to changes in bottom roughness. This appears to happen because the distribution of entrainment is totally different in the case of rough bottom. Entrainment tends to initiate earlier (due to vertical motion induced by topography) and terminate earlier (due to development of form drag) than that over smooth topography. (C) 2007 Elsevier Ltd. All rights reserved. C1 [Ozgokmen, Tamay M.] Univ Miami, RSMAS MPO, Miami, FL 33152 USA. [Fischer, Paul F.] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. RP Ozgokmen, TM (reprint author), Univ Miami, RSMAS MPO, Miami, FL 33152 USA. EM tozgokmen@rsmas.miami.edu NR 78 TC 30 Z9 30 U1 1 U2 11 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 1463-5003 EI 1463-5011 J9 OCEAN MODEL JI Ocean Model. PY 2008 VL 20 IS 4 BP 336 EP 361 DI 10.1016/j.ocemod.2007.10.004 PG 26 WC Meteorology & Atmospheric Sciences; Oceanography SC Meteorology & Atmospheric Sciences; Oceanography GA 265BG UT WOS:000253333500002 ER PT S AU Carriere, O Hermand, JP Candy, JV AF Carriere, Olivier Hermand, Jean-Pierre Candy, James V. GP MTS IEEE TI Range-resolving shallow water acoustic tomography by ensemble Kalman filtering SO OCEANS 2008, VOLS 1-4 SE OCEANS-IEEE LA English DT Proceedings Paper CT OCEANS 2008 Conference CY SEP 15-18, 2008 CL Quebec City, CANADA SP IEEE DE coastal acoustic tomography; nonlinear Kalman filter; empirical orthogonal functions; inversion ID INVERSION AB In the context of the recent Maritime Rapid Environmental Assessment sea trial (MREA/BP'07), this paper presents a range-resolving tomography method based on the ensemble Kalman filtering (EnKF) of full-field acoustic measurements on a vertical array. The measurements are assimilated in a Gauss-Markov model of the sound-speed field time variations with known statistics. The reformulation of the inverse problem in an ocean data assimilation framework enables the sequential tracking of time- and space-varying environmental parameters. The tracking scheme is here applied to a realistic simulation of a vertical slice in a shallow water environment. Sea-surface sound-speed measurements are augmented to the measurement vector to constrain the range-dependent structure. Known bottom and subbottom properties are taken into account in the propagation model. When compared to the extended Kalman filter, the EnKF is shown to properly cope with the nonlinearity introduced by the full-field approach. C1 [Carriere, Olivier; Hermand, Jean-Pierre] Univ Libre Bruxelles, OPERA Acoust Dept, Environm Hydroacoust Lab, Ave Franklin D Roosevelt 50,CP 194-05, B-1050 Brussels, Belgium. [Candy, James V.] Univ Calif Santa Barbara, Santa Barbara, CA USA. [Candy, James V.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Carriere, O (reprint author), Univ Libre Bruxelles, OPERA Acoust Dept, Environm Hydroacoust Lab, Ave Franklin D Roosevelt 50,CP 194-05, B-1050 Brussels, Belgium. EM jhermand@ulb.ac.be FU Fonds pour la formationa la Recherche dans l'Industrie et dans l'Agriculture (FRIA), Belgium; Service Hydrographiqueet Oceanographique de la Marine Francaise (SHOM); European Seas Observatory Network Network of Excellence(ESONET NoE); European 6th Framework Programme; research priority Global change; European Commission FX The authors acknowledge the support of the Fonds pour la formationa la Recherche dans lIndustrie et dans lAgriculture (FRIA), Belgium, the Service Hydrographiqueet Oceanographique de la Marine Francaise (SHOM) and the European Seas Observatory Network Network of Excellence(ESONET NoE) funded by the European 6th Framework Pro- gramme, research priority 1.1.6.3 Global change and ecosys- tems, European Commission. NR 11 TC 0 Z9 0 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0197-7385 BN 978-1-4244-2619-5 J9 OCEANS-IEEE PY 2008 BP 964 EP + PG 3 WC Engineering, Marine; Engineering, Ocean; Oceanography SC Engineering; Oceanography GA BJG44 UT WOS:000265654500148 ER PT B AU Wang, ZG Gao, F Zu, XT Weber, WJ AF Wang, Zhiguo Gao, Fei Zu, Xiaotao Weber, William J. BE Wang, ZM TI Physical Properties of GaN Nanotubes as Revealed by Computer Simulation SO ONE-DIMENSIONAL NANOSTRUCTURES SE Lecture Notes in Nanoscale Science and Technology LA English DT Article; Book Chapter ID MOLECULAR-DYNAMICS SIMULATIONS; LATTICE THERMAL-CONDUCTIVITY; GALLIUM NITRIDE NANOTUBES; PLASTIC-DEFORMATION; DUCTILE TRANSITION; CARBON NANOTUBES; LOW-TEMPERATURES; BORON-NITRIDE; NANOWIRES; SILICON AB Single-crystalline wurtzite GaN nanotubes have been synthesized recently with proposed applications in nanoscale electronics, optoelectronics, and the biochemical sensing field. In this work, molecular dynamics methods with a Stillinger-Weber potential have been used to investigate the melting behavior, thermal conductivity, and mechanical properties of wurtzite-type single-crystalline GaN nanotubes. (1) The simulations show that the melting temperature of the GaN nanotubes increases with the thickness of the nanotubes to a saturation value, which is close to the melting temperature of a bulk GaN. The results reveal that the nanotubes begin to melt at the surface, and then the melting rapidly extends to the interior of the nanotubes as the temperature increases. (2) The thermal conductivity of nanotubes is smaller than that of the bulk GaN single crystal. The thermal conductivity is also found to decrease with temperature and increase with increasing wall thickness of the nanotubes. The change of phonon spectrum and surface inelastic scattering may account for the reduction of thermal conductivity in the nanotubes, while thermal softening and high-frequency phonon interactions at high temperatures may provide an explanation for its decrease with increasing temperature. (3) The simulation results show that at low temperatures, the nanotubes show brittle properties, whereas at high temperatures, they behave as ductile materials. The brittle to ductile transition temperature generally increases with increasing thickness of the nanotubes and strain rate. (4) The simulation temperature, tube length, and strain rate all can affect the buckling behavior of GaN nanotubes. The critical stress decreases with the increase of simulation temperature and tube length. The tube length dependence of buckling is compared with those from the analysis of equivalent continuum structures using Euler buckling theory. C1 [Wang, Zhiguo; Zu, Xiaotao] Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China. [Weber, William J.] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China. [Gao, Fei] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Wang, ZG (reprint author), Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China. RI Weber, William/A-4177-2008 OI Weber, William/0000-0002-9017-7365 NR 82 TC 0 Z9 0 U1 0 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES BN 978-0-387-74132-1; 978-0-387-74131-4 J9 LECT NOTES NANOSCALE PY 2008 VL 3 BP 97 EP 126 DI 10.1007/978-0-387-74132-1_5 D2 10.1007/978-0-387-74132-1 PG 30 WC Nanoscience & Nanotechnology SC Science & Technology - Other Topics GA BLO87 UT WOS:000270699900005 ER PT S AU Bronevetsky, G Gyllenhaal, J de Supinski, BR AF Bronevetsky, Greg Gyllenhaal, John de Supinski, Bronis R. BE Eigenmann, R DeSupinski, BR TI CLOMP: Accurately characterizing OpenMP application overheads SO OPENMP IN A NEW ERA OF PARALLELISM, PROCEEDINGS SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Proceedings Paper CT 4th International Workshop on OpenMP in New Era of Parallelism CY MAY 12-14, 2008 CL Lafayette, IN AB Despite its ease of use, OpenMP has failed to gain widespread use on large scale systems, largely due to its failure to deliver sufficient performance. Our experience indicates that the cost of initiating OpenMP regions is simply too high for the desired OpenMP usage scenario of many applications. In this paper, we introduce CLOMP, a new benchmark to characterize this aspect of OpenMP implementations accurately. CLOMP complements the existing EPCC benchmark suite to provide simple, easy to understand measurements of OpenMP overheads in the context of application usage scenarios. Our results for several OpenMP implementations demonstrate that CLOMP identifies the amount of work required to compensate for the overheads observed with EPCC. Further, we show that CLOMP also captures limitations for OpenMP parallelization on NUMA systems. C1 [Bronevetsky, Greg; Gyllenhaal, John; de Supinski, Bronis R.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Bronevetsky, G (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. NR 16 TC 4 Z9 4 U1 0 U2 1 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 978-3-540-79560-5 J9 LECT NOTES COMPUT SC PY 2008 VL 5004 BP 13 EP 25 PG 13 WC Computer Science, Theory & Methods SC Computer Science GA BHS57 UT WOS:000255944000002 ER PT S AU Lusk, E Chan, A AF Lusk, Ewing Chan, Anthony BE Eigenmann, R DeSupinski, BR TI Early experiments with the OpenMP/MPI hybrid programming model SO OPENMP IN A NEW ERA OF PARALLELISM, PROCEEDINGS SE Lecture Notes in Computer Science LA English DT Proceedings Paper CT 4th International Workshop on OpenMP (IWOMP-2008) CY MAY 12-14, 2008 CL Purdue Univ, W Lafayette, IN HO Purdue Univ AB The paper describes some very early experiments on new architectures that support the hybrid programming model. Our results are promising in that OpenMP threads interact with MPI as desired, allowing OpenMP-agnostic tools to be used. We explore three environments: a "typical" Linux cluster, a new large-scale machine from SiCortex, and the new IBM BG/P, which have quite different compilers and runtime systems for both OpenMP and MPI. We look at a few simple, diagnostic programs, and one "application-like" test program. We demonstrate the use of a tool that can examine the detailed sequence of events in a hybrid program and illustrate that a hybrid computation might not always proceed as expected. C1 [Lusk, Ewing] Argonne Natl Lab, Math & Comp Sci Div, Argonne, IL 60439 USA. [Chan, Anthony] Univ Chicago, ASCI FLASH Ctr, Chicago, IL 60637 USA. RP Lusk, E (reprint author), Argonne Natl Lab, Math & Comp Sci Div, Argonne, IL 60439 USA. FU U.S. Department of Energy [B523820]; University of Chicago; Mathematical, Information, and Computational Sciences Division subprogram of the Office of Advanced Scientific Computing Research, Office of Science, U.S. Departent of Energy [DE-AC02-06CH1135] FX This work was supported in part by the U.S. Department of Energy Contract #B523820 to the ASC/Alliance Center for Astrophysical Thermonuclear Flashes at the University of Chicago and in part by the Mathematical, Information, and Computational Sciences Division subprogram of the Office of Advanced Scientific Computing Research, Office of Science, U.S. Departent of Energy, under Contract DE-AC02-06CH1135 NR 11 TC 17 Z9 17 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 978-3-540-79560-5 J9 LECT NOTES COMPUT SC PY 2008 VL 5004 BP 36 EP + PG 3 WC Computer Science, Theory & Methods SC Computer Science GA BHS57 UT WOS:000255944000004 ER PT S AU Hoeflinger, JP de Supinski, BR AF Hoeflinger, Jay P. de Supinski, Bronis R. BE Mueller, MS Chapman, BM DeSupinski, BR Malony, AD Voss, M TI The OpenMP memory model SO OPENMP SHARED MEMORY PARALLEL PROGRAMMING, PROCEEDINGS SE Lecture Notes in Computer Science LA English DT Proceedings Paper CT 1st International Workshop on OpenMP (IWOMP) CY JUN 01-04, 2005 CL Eugene, OK AB The memory model of OpenMP has been widely misunderstood since the first OpenMP specification was published in 1997 (Fortran 1.0). The proposed OpenMP specification (version 2.5) includes a memory model section to address this issue. This section unifies and clarifies the text about the use of memory in all previous specifications, and relates the model to well-known memory consistency semantics. In this paper, we discuss the memory model and show its implications for future distributed shared memory implementations of OpenMP. C1 [Hoeflinger, Jay P.] Intel Corp, 1906 Fox Dr, Champaign, IL 61820 USA. [de Supinski, Bronis R.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Hoeflinger, JP (reprint author), Intel Corp, 1906 Fox Dr, Champaign, IL 61820 USA. EM jay.p.hoeflinger@intel.com; bronis@llnl.gov FU U.S. Department of Energy by University of California LLNL [W-7405-Eng-48, UCRL-ABS-210774] FX This work was partially performed under the auspices of the U.S. Department of Energy by University of California LLNL under contract W-7405-Eng-48. UCRL-ABS-210774. NR 9 TC 2 Z9 2 U1 0 U2 1 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 978-3-540-68554-8 J9 LECT NOTES COMPUT SC PY 2008 VL 4315 BP 167 EP + PG 2 WC Computer Science, Hardware & Architecture; Computer Science, Theory & Methods SC Computer Science GA BHU87 UT WOS:000256573200014 ER PT S AU Bronevetsky, G de Supinski, BR AF Bronevetsky, Greg de Supinski, Bronis R. BE Mueller, MS Chapman, BM DeSupinski, BR Malony, AD Voss, M TI Formal specification of the OpenMP memory model SO OPENMP SHARED MEMORY PARALLEL PROGRAMMING, PROCEEDINGS SE Lecture Notes in Computer Science LA English DT Proceedings Paper CT 2nd International Workshop on OpenMP (IWOMP) CY JUN 12-15, 2006 CL Reims, FRANCE AB OpenMP [1] is an important API for shared memory programming, combining shared memory's potential for performance with a simple programming interface. Unfortunately, OpenMP lacks a critical tool for demonstrating whether programs are correct: a formal memory model. Instead, the current official definition of the OpenMP memory model (the OpenMP 2.5 specification [1]) is in terms of informal prose. As a result, it is impossible to verify OpenMP applications formally since the prose does not provide a formal consistency model that precisely describes how reads and writes on different threads interact. This paper focuses on the formal verification of OpenMP programs through a proposed formal memory model that is derived from the existing prose model [1]. Our formalization provides a two-step process to verify whether an observed OpenMP execution is conformant. In addition to this formalization, our contributions include a discussion of ambiguities in the current prose-based memory model description. Although our formal model may not capture the current informal memory model perfectly, in part due to these ambiguities, our model reflects our understanding of the informal model's intent. We conclude with several examples that may indicate areas of the OpenMP memory model that need further refinement however it is specified. Our goal is to motivate the OpenMP community to adopt those refinements eventually, ideally through a formal model, in later OpenMP specifications. C1 [Bronevetsky, Greg] Cornell Univ, Dept Comp Sci, Ithaca, NY 14850 USA. [de Supinski, Bronis R.] Lawrence Livermore Natl Lab, Ctr Appl Scientif Comp, Livermore, CA 94551 USA. RP Bronevetsky, G (reprint author), Cornell Univ, Dept Comp Sci, Ithaca, NY 14850 USA. EM greg@bronevetsky.com; bronis@11nl.gov NR 9 TC 0 Z9 0 U1 0 U2 1 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 978-3-540-68554-8 J9 LECT NOTES COMPUT SC PY 2008 VL 4315 BP 324 EP + PG 3 WC Computer Science, Hardware & Architecture; Computer Science, Theory & Methods SC Computer Science GA BHU87 UT WOS:000256573200027 ER PT B AU Hudson, CR Badiru, AB AF Hudson, C. Randy Badiru, Adedeji B. BE Ravindran, AR TI Energy Systems SO OPERATIONS RESEARCH AND MANAGEMENT SCIENCE HANDBOOK SE Operations Research Series LA English DT Article; Book Chapter ID COGENERATION SYSTEMS; OPERATION C1 [Badiru, Adedeji B.] AF Inst Technol, Dayton, OH USA. [Hudson, C. Randy] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Hudson, CR (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. NR 34 TC 0 Z9 0 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 978-0-8493-9721-9 J9 OPER RES SER PY 2008 PG 29 WC Operations Research & Management Science SC Operations Research & Management Science GA BJY39 UT WOS:000267418500020 ER PT S AU Matzel, JEP Bowring, SA Miller, RB AF Matzel, Jennifer E. P. Bowring, Samuel A. Miller, Robert B. BE Wright, JE Shervais, JW TI Spatial and temporal variations in Nd isotopic signatures across the crystalline core of the North Cascades, Washington SO OPHIOLITES, ARCS, AND BATHOLITHS: A TRIBUTE TO CLIFF HOPSON SE Geological Society of America Special Papers LA English DT Proceedings Paper CT Symposium on Ophiolites, Batholiths and Regional Geology in Honor of Cliff Hopson CY OCT, 2005 CL Salt Lake City, UT SP Geol Soc Amer DE neodymium; North Cascades; magmatism; crustal growth; terrane ID COAST PLUTONIC COMPLEX; SOUTHWESTERN BRITISH-COLUMBIA; SOUTHERN CANADIAN CORDILLERA; U-PB ZIRCON; TECTONIC IMPLICATIONS; VOLCANIC-ROCKS; MOUNTAINS BATHOLITH; METAMORPHIC HISTORY; QUESNEL TERRANE; CONTINENTAL ARC AB The crystalline core of the North Cascades arc records the Cretaceous to Paleogene history of magmatism, deformation, and crustal growth along a segment of the North American Cordillera. The Nd isotopic compositions of granitoid plutons that intrude the Cascades core are a product of their source regions, and they provide probes of the crustal architecture. We present Sm-Nd isotopic data from 96 Ma to 45 Ma plutons and meta-igneous and metasedimentary terranes across the Cascades core. Sm-Nd data from all metamorphic terranes, excluding the much younger ca. 73 Ma Swakane terrane, yield mid-Cretaceous epsilon(Nd) values that range from +8.5 to -1.9 and indicate minor involvement of an enriched crustal component. Amphibolites from the Napeequa complex and Chiwaukum Schist yield near-depleted-mantle epsilon(Nd) values in the mid-Cretaceous, and epsilon(Nd) values from meta-clastic rocks from these terranes (+3.4 to -1.9) have an isotopic character that is intermediate between arc-derived and continental-shelf (miogeocline) sediments, reflecting a mixture of these two sources. Initial epsilon(Nd) values of the Swakane Gneiss range from +0.6 to -5.4 and reflect a significant input from the miogeocline. The initial epsilon(Nd) values of the Late Cretaceous to Paleogene plutons studied range from +1.5 to +6.3, consistent with geochemical studies that indicate the plutons were generated by mixing of mantle-derived melt and melt derived by anatexis of the underlying terranes. Initial epsilon(Nd) values of plutons from the NE part of the Cascades core generally decrease over time, suggesting a greater contribution of melt from evolved crustal sources, which may reflect a change in the physical parameters of melting. The metamorphic terranes of the North Cascades show a close affinity to the Late Triassic to Early Cretaceous arc terranes of the southern Coast Belt. The similarity in isotopic character supports the assumption that the North Cascadesterranes formed in a position outboard of the North American craton but in close enough proximity to derive sediments from the miogeocline. Variations in Nd signature are also observed between the northern and southern Coast plutonic complex, and they indicate changes in the sources of crustal melting along the length of the Cretaceous arc. C1 [Matzel, Jennifer E. P.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Matzel, JEP (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave,L-231, Livermore, CA 94550 USA. EM matzel2@llnl.gov NR 97 TC 6 Z9 6 U1 0 U2 5 PU GEOLOGICAL SOC AMER INC PI BOULDER PA 3300 PENROSE PL, PO BOX 9140, BOULDER, CO 80301 USA SN 0072-1077 BN 978-0-8137-2438-6 J9 GEOL SOC AM SPEC PAP PY 2008 VL 438 BP 499 EP 516 DI 10.1130/2008.2438(18) PG 18 WC Geology SC Geology GA BMF22 UT WOS:000272078700018 ER PT S AU Stolz, CJ AF Stolz, Christopher J. BE Wang, Y Tschudi, TT Rolland, JP Tatsuno, K TI The national ignition facility: The world's largest optical system - art. no. 683402 SO OPTICAL DESIGN AND TESTING III, PTS 1 AND 2 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optical Design and Testing III CY NOV 12-15, 2007 CL Beijing, PEOPLES R CHINA SP SPIE DE laser glass; fused silica; KDP; DKDP; laser resistance; mirrors; polarizers; optical thin films ID LASER; MIRRORS; FABRICATION; FUSION AB The National Ignition Facility (NIF), a 192-beam fusion laser, is presently under construction at the Lawrence Livermore National Laboratory with an expected completion in 2008.(1-5) The facility contains 7,456 meter-scale optics for amplification, beam steering, vacuum barriers, focusing, polarization rotation, and wavelength conversion. 6 A multiphase program was put in place to increase the monthly optical manufacturing rate by up to 20x while simultaneously reducing cost by up to 3x through a sub-scale development, full-scale facilitization, and a pilot production phase. Currently 80% of the optics are complete with over 50% installed. In order to manufacture the high quality optics at desired manufacturing rate of over 100 precision optics per month, new more deterministic advanced fabrication technologies had to be employed over those used to manufacture previous fusion lasers. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Stolz, CJ (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave L-491, Livermore, CA 94550 USA. NR 12 TC 0 Z9 0 U1 1 U2 3 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-7009-6 J9 P SOC PHOTO-OPT INS PY 2008 VL 6834 BP 83402 EP 83402 PG 9 WC Optics SC Optics GA BHL99 UT WOS:000254210600001 ER PT S AU Heebner, J Grover, R Ibrahim, T AF Heebner, John Grover, Rohit Ibrahim, Tarek BA Heebner, J Grover, R Ibrahim, TA BF Heebner, J Grover, R Ibrahim, TA TI Optical Microresonators Theory, Fabrication, and Applications Introduction SO OPTICAL MICRORESONATORS: THEORY, FABRICATION, AND APPLICATIONS SE Springer Series in Optical Sciences LA English DT Editorial Material; Book Chapter ID WHISPERING-GALLERY MODES; DIELECTRIC WAVE-GUIDES; CHANNEL-DROPPING FILTERS; EFFECTIVE-INDEX METHOD; COUPLED MICRORING RESONATORS; NONLINEAR PHASE-SHIFT; ZINCBLEND-TYPE SEMICONDUCTORS; FABRY-PEROT-INTERFEROMETER; FUSED-SILICA MICROSPHERES; KRAMERS-KRONIG RELATIONS C1 [Heebner, John] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Grover, Rohit] Intel Corp, Aloha, OR 97007 USA. [Ibrahim, Tarek] Intel Corp, Hillsboro, OR 97124 USA. RP Heebner, J (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA. EM heebner1@llnl.gov; rohit.grover@intel.com; tarek.a.ibrahim@intel.com NR 0 TC 76 Z9 76 U1 2 U2 3 PU SPRINGER-VERLAG LONDON LTD PI GODALMING PA SWEETAPPLE HOUSE CATTESHALL RD FARNCOMBE, GODALMING GU7 1NH, SURREY, ENGLAND SN 0342-4111 BN 978-0-387-73067-7 J9 SPRINGER SER OPT SCI PY 2008 VL 138 BP 1 EP + PG 24 WC Nanoscience & Nanotechnology; Optics SC Science & Technology - Other Topics; Optics GA BJM28 UT WOS:000266795500001 ER PT S AU Andreas, AM Myers, DR AF Andreas, Afshin M. Myers, Daryl R. BE Tsai, BK TI Pulse analysis spectroradiometer system for measuring the spectral distribution of flash solar simulators SO Optical Modeling and Measurements for Solar Energy Systems II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optical Modeling and Measurements for Solar Energy Systems II CY AUG 13-14, 2008 CL San Diego, CA SP SPIE DE spectral distribution; solar simulator classification; flash solar simulator; pulse measurement system; waveform capture; spectroradiometer; monochromator; artificial light AB Flashing artificial light sources are used extensively in photovoltaic module performance testing and plant production lines. There are several means of attempting to measure the spectral distribution of a flash of light; however, many of these approaches generally capture the entire pulse energy. We report here oil the design and performance of a system to capture the waveform of flash at individual wavelengths of light. Any period within the flash duration can be selected, over which to integrate the flux intensity at each wavelength. The resulting spectral distribution is compared with the reference spectrum, resulting in a solar simulator classification. C1 [Andreas, Afshin M.; Myers, Daryl R.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Andreas, AM (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. EM afshin_andreas@nrel.gov NR 4 TC 0 Z9 0 U1 0 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-7266-3 J9 P SOC PHOTO-OPT INS PY 2008 VL 7046 AR 70460I DI 10.1117/12.792763 PG 11 WC Energy & Fuels; Instruments & Instrumentation; Optics SC Energy & Fuels; Instruments & Instrumentation; Optics GA BIT37 UT WOS:000262505700013 ER PT S AU Kerekes, RA Kumar, BVKV AF Kerekes, Ryan A. Kumar, B. V. K. Vijaya BE Casasent, DP Chao, TH TI Multiple target detection in video using quadratic multi-frame correlation filtering SO OPTICAL PATTERN RECOGNITION XIX SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Optical Pattern Recognition XIX CY MAR 17-18, 2008 CL Orlando, FL SP SPIE DE correlation filters; target detection; target tracking; video ID TRACKING; RECOGNITION; DESIGN AB Most integrated target detection and tracking systems employ state-space models to keep track of an explicit number of individual targets. Recently, a non-state-space framework was developed for enhancing target detection in video by applying probabilistic motion models to the soft information in correlation outputs before thresholding. This framework has been referred to as multi-frame correlation filtering (MFCF), and because it avoids the use of state-space models and the formation of explicit tracks, the framework is well-suited for handling scenes with unknown numbers of targets at unknown positions. In this paper, we propose to use quadratic correlation filters (QCFs) in the MFCF framework for robust target detection. We test our detection algorithm on real and synthesized single-target and multi-target video sequences. Simulation results show that MFCF can significantly reduce (to zero in the best case) the false alarm rates of QCFs at detection rates above 95% in the presence of large amounts of uncorrelated noise. We also show that MFCF is more adept at rejecting those false peaks due to uncorrelated noise rather than those due to clutter and compression noise; consequently, we show that filters used in the framework should be made to favor clutter rejection over noise tolerance. C1 [Kerekes, Ryan A.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Kerekes, RA (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. EM kerekesra@ornl.gov; kumar@ece.cmu.edu NR 22 TC 0 Z9 0 U1 0 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-7168-0 J9 PROC SPIE PY 2008 VL 6977 AR 697705 DI 10.1117/12.777822 PG 15 WC Engineering, Aerospace; Optics SC Engineering; Optics GA BIA88 UT WOS:000257982800004 ER PT S AU Alam, MK Martin, L Schmitt, RL Ten Eyck, GA Welle, E AF Alam, M. Kathleen Martin, Laura Schmitt, Randal L. Ten Eyck, Gregory A. Welle, Eric BE Dickey, FM Beyer, RA TI Vibrational Spectroscopy of HNS Degradation SO OPTICAL TECHNOLOGIES FOR ARMING, SAFING, FUZING, AND FIRING IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optical Technologies for Arming Safing, Fuzing, and Firing IV CY AUG 13-14, 2008 CL San Diego, CA SP SPIE DE HNS degradation; infrared; photoacoustic; ATR ID WAVE-GUIDES; 2,2',4,4',6,6'-HEXANITROSTILBENE AB Hexanitrostilbene (HNS) is a widely used explosive, due in part to its high thermal stability. Degradation of HNS is known to occur through UV, chemical exposure, and heat exposure, which can lead to reduced performance of the material. Common methods of testing for FINS degradation include wet chemical and surface area testing of the material itself, and performance testing of devices that use HNS. The commonly used chemical tests, such as volatility, conductivity and contaminant trapping provide information on contaminants rather than the chemical stability of the HNS itself. Additionally, these tests are destructive in nature. As an alternative to these methods, we have been exploring the use of vibrational spectroscopy as a means of monitoring HNS degradation non-destructively. In particular, infrared (IR) spectroscopy lends itself well to non-destructive analysis. Molecular variations in the material can be identified and compared to pure samples. The utility of IR spectroscopy was evaluated using pressed pellets of HNS exposed to DETA (diethylaminetriamine). Amines are known to degrade HNS, with the proposed product being a a-adduct. We have followed these changes as a function of time using various IR sampling techniques including photoacoustic and attenuated total reflectance (ATR). C1 [Alam, M. Kathleen; Martin, Laura; Schmitt, Randal L.; Ten Eyck, Gregory A.; Welle, Eric] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Alam, MK (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 10 TC 0 Z9 0 U1 1 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-7290-8 J9 P SOC PHOTO-OPT INS PY 2008 VL 7070 AR 70700S DI 10.1117/12.793317 PG 10 WC Optics; Physics, Applied SC Optics; Physics GA BIZ50 UT WOS:000263959200025 ER PT S AU Hsu, AY Robinson, AM Cemosek, RW AF Hsu, Alan Y. Robinson, Alex M. Cemosek, Richard W. BE Dickey, FM Beyer, RA TI Fiber-optic current sensors based on polarization coherence and power scattering in magneto-optical films SO OPTICAL TECHNOLOGIES FOR ARMING, SAFING, FUZING, AND FIRING IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optical Technologies for Arming Safing, Fuzing, and Firing IV CY AUG 13-14, 2008 CL San Diego, CA SP SPIE DE magneto-optical film; optical current sensor; polarization coherence; power scattering ID GARNETS AB Fiber-optic sensors for sensing electrical current are attractive due to their inherent immunity to electromagnetic interference. Several groups have shown the use of Faraday rotation in magneto-optical materials as a function of current-induced magnetic field. In this work, fiber-optic sensors based on different mechanisms such as magnetic-field-dependent polarization coherence and power scattering effects in magneto-optical materials are demonstrated. These novel sensor configurations can have advantages in that they exhibit power-independent or polarization-independent operation which can ultimately lead to fewer components and relaxed light source requirements compared to fiber-optic current sensor systems based on Faraday rotation. C1 [Hsu, Alan Y.; Robinson, Alex M.; Cemosek, Richard W.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Hsu, AY (reprint author), Sandia Natl Labs, 1515 Eubank Blvd SE, Albuquerque, NM 87185 USA. NR 5 TC 0 Z9 0 U1 0 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 978-0-8194-7290-8 J9 P SOC PHOTO-OPT INS PY 2008 VL 7070 AR 70700T DI 10.1117/12.793166 PG 8 WC Optics; Physics, Applied SC Optics; Physics GA BIZ50 UT WOS:000263959200026 ER PT S AU Keeler, GA Mar, A Geib, KM Hsu, AY Serkland, DK Peake, GM AF Keeler, G. A. Mar, A. Geib, K. M. Hsu, A. Y. Serkland, D. K. Peake, G. M. BE Dickey, FM Beyer, RA TI VCSEL-based microsensors for photonic proximity fuzing of munitions SO OPTICAL TECHNOLOGIES FOR ARMING, SAFING, FUZING, AND FIRING IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optical Technologies for Arming Safing, Fuzing, and Firing IV CY AUG 13-14, 2008 CL San Diego, CA SP SPIE DE VCSELs; resonant-cavity photodetectors; refractive micro-optics; optical fuzing; proximity sensors AB This paper describes technologies developed at Sandia National Laboratories to create a compact, robust, and affordable photonic proximity sensor for munitions fuzing. The proximity fuze employs high-power vertical-cavity surface-emitting laser (VCSEL) arrays, resonant-cavity photodetectors (RCPDs), and refractive micro-optics that are integrated within a microsensor whose volume is approximately 0.01 cm(3). Successful development and integration of these custom photonic components should enable a g-hard photonic proximity fuze that replaces costly assemblies of discrete lasers, photodetectors, and bulk optics. Additional applications of this technology include void sensing, ladar and short-range 3-D imaging. C1 [Keeler, G. A.; Mar, A.; Geib, K. M.; Hsu, A. Y.; Serkland, D. K.; Peake, G. M.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Keeler, GA (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM gakeele@sandia.gov NR 4 TC 0 Z9 0 U1 1 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 978-0-8194-7290-8 J9 P SOC PHOTO-OPT INS PY 2008 VL 7070 AR 70700V DI 10.1117/12.792023 PG 8 WC Optics; Physics, Applied SC Optics; Physics GA BIZ50 UT WOS:000263959200028 ER PT S AU Martinez, LE Caldwell, M AF Martinez, L. E. Caldwell, M. BE Dickey, FM Beyer, RA TI Lightning Vulnerability of Fiber-Optic Cables SO OPTICAL TECHNOLOGIES FOR ARMING, SAFING, FUZING, AND FIRING IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optical Technologies for Arming Safing, Fuzing, and Firing IV CY AUG 13-14, 2008 CL San Diego, CA SP SPIE DE Lightning; vulnerability; grounded; enclosure; fiber; optic; cables; isolation AB One reason to use optical fibers to transmit data is for isolation from unintended electrical energy. Using fiber optics in an application where the fiber cable/system penetrates the aperture of a grounded enclosure serves two purposes: first, it allows for control signals to be transmitted where they are required, and second, the insulating properties of the fiber system help to electrically isolate the fiber terminations on the inside of the grounded enclosure. A fundamental question is whether fiber optic cables can allow electrical energy to pass through a grounded enclosure, with a lightning strike representing an extreme but very important case. A DC test bed capable of producing voltages up to 200 kV was used to characterize electrical properties of a variety of fiber optic cable samples. Leakage current in the samples were measured with a micro-Ammeter. In addition to the leakage current measurements, samples were also tested to DC voltage breakdown. After the fiber optic cables samples were tested with DC methods, they were tested under representative lightning conditions at the Sandia Lightning Simulator (SLS). Simulated lightning currents of 30 kA and 200 kA were selected for this test series. This paper documents measurement methods and test results for DC high voltage and simulated lightning tests performed at the Sandia Lightning Simulator on fiber optic cables. The tests performed at the SLS evaluated whether electrical energy can be conducted inside or along the surface of a fiber optic cable into a grounded enclosure under representative lightning conditions. C1 [Martinez, L. E.; Caldwell, M.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Martinez, LE (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 0 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 978-0-8194-7290-8 J9 P SOC PHOTO-OPT INS PY 2008 VL 7070 AR 70700C DI 10.1117/12.795347 PG 10 WC Optics; Physics, Applied SC Optics; Physics GA BIZ50 UT WOS:000263959200010 ER PT S AU Pack, MV Miller, PA Shelton, J AF Pack, Michael V. Miller, Paul A. Shelton, Jason BE Dickey, FM Beyer, RA TI Dynamics of flashlamp pumping a Nd:Cr:GSGG laser SO OPTICAL TECHNOLOGIES FOR ARMING, SAFING, FUZING, AND FIRING IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optical Technologies for Arming Safing, Fuzing, and Firing IV CY AUG 13-14, 2008 CL San Diego, CA SP SPIE DE Fluorescence; laser inversion; Nd:Cr:GSGG; dynamics ID GARNET AB We investigate the inversion dynamics in Nd:Cr:GSGG laser rods as a function of pumping frequency in order to optimize Nd:Cr:GSGG Q switched lasers for rapid time to fire applications. By frequency filtering the pump light to the Nd:Cr:GSGG rod and measuring the florescence from the rod, we determine the dynamics for different excitation processes in the laser (i.e. direct excitation of the Nd ions or indirect excitation via Cr ions). We also measure the flashlamp pulse shape using various spectral filters This combination of measurements help LIS understand the processes contributing and limiting the efficiency of Nd:Cr:GSGG lasers when the lasers must fire on a short time scale. C1 [Pack, Michael V.; Miller, Paul A.; Shelton, Jason] Sandia Natl Labs, Albuquerque, NM 87123 USA. RP Pack, MV (reprint author), Sandia Natl Labs, 1515 Eubank SE, Albuquerque, NM 87123 USA. EM mvpack@sandia.gov NR 8 TC 0 Z9 0 U1 0 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-7290-8 J9 P SOC PHOTO-OPT INS PY 2008 VL 7070 AR 70700M DI 10.1117/12.795195 PG 11 WC Optics; Physics, Applied SC Optics; Physics GA BIZ50 UT WOS:000263959200020 ER PT S AU Shelton, JW Dickey, FM Krishna, S AF Shelton, Jason. W. Dickey, Fred M. Krishna, Sanjay BE Dickey, FM Beyer, RA TI Series connected photovoltaic array performance under non-uniform illumination SO OPTICAL TECHNOLOGIES FOR ARMING, SAFING, FUZING, AND FIRING IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optical Technologies for Arming Safing, Fuzing, and Firing IV CY AUG 13-14, 2008 CL San Diego, CA SP SPIE DE Photovoltaic array; optical power transfer; fiber illumination AB The performance of a series connected photovoltaic array is limited by the photocell that is illuminated the least. This paper quantifies the effects of single-mode and multi-mode illumination and discusses the design parameters. C1 [Shelton, Jason. W.; Dickey, Fred M.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Shelton, JW (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM jshelto@sandia.gov NR 13 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 978-0-8194-7290-8 J9 P SOC PHOTO-OPT INS PY 2008 VL 7070 AR UNSP 70700R DI 10.1117/12.809686 PG 8 WC Optics; Physics, Applied SC Optics; Physics GA BIZ50 UT WOS:000263959200024 ER PT S AU Awwal, AAS Rice, KL Leach, RR Taha, TM AF Awwal, Abdul A. S. Rice, Kenneth L. Leach, Richard R. Taha, Tarek M. BE Awwal, AAS Iftekharuddin, KM Javidi, B TI Higher Accuracy Template for Corner Cube Reflected Image SO OPTICS AND PHOTONICS FOR INFORMATION PROCESSING II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optics and Photonics for Information Processing II CY AUG 13-14, 2008 CL San Diego, CA SP SPIE DE pattern recognition; matched filtering; automated optical alignment ID NATIONAL-IGNITION-FACILITY AB Video images of laser beams are analyzed to determine the position of the laser beams for alignment purpose in the National Ignition Facility (NIF). Algorithms process beam images to facilitate automated laser alignment. One Such beam image, known as the corner cube reflected pinhole image, exhibits wide beam quality variations that are processed by a matched-filter-based algorithm. The challenge is to design a representative template that captures these variations while at the same time assuring accurate position determination. This paper describes the development of a new analytical template to accurately estimate the center of a beam with good image quality. The templates are constructed to exploit several key recurring features observed in the beam images. When the beam Linage quality is low, the algorithm chooses a template that contains fewer features. The algorithm was implemented using a Xilinx Virtex II Pro FPGA implementation that provides a speedup of about 6.4 times over a baseline 3GHz Pentium 4 processor. C1 [Awwal, Abdul A. S.; Leach, Richard R.] Lawrence Livermore Natl Lab, Natl Ignit Facil, Livermore, CA 94551 USA. RP Awwal, AAS (reprint author), Lawrence Livermore Natl Lab, Natl Ignit Facil, Livermore, CA 94551 USA. EM awwall@llnl.gov; awwall@llnl.gov NR 9 TC 0 Z9 0 U1 0 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-7292-2 J9 P SOC PHOTO-OPT INS PY 2008 VL 7072 AR 70720V DI 10.1117/12.798704 PG 6 WC Instruments & Instrumentation; Optics; Imaging Science & Photographic Technology SC Instruments & Instrumentation; Optics; Imaging Science & Photographic Technology GA BIZ55 UT WOS:000263963400023 ER PT S AU Bernacki, BE Ho, N AF Bernacki, Bruce E. Ho, Nicolas BE Halvorson, CS Lehrfeld, D Saito, TT TI Differential spectroscopic imaging of particulate explosives residue - art. no. 694517 SO OPTICS AND PHOTONICS IN GLOBAL HOMELAND SECURITY IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optics and Photonics in Global Homeland Security IV CY MAR 17-20, 2008 CL Orlando, FL SP SPIE DE explosives detection; spectroscopic imaging; absorption spectroscopy; infrared imaging ID SYSTEM; LASER AB We present experimental results showing transmission and reflection imaging of approximately 100 mu g quantities of particulate explosives residue using a commercial uncooled microbolometer infrared camera and CO2 laser differential wavelength illumination. Fine particulates may be generated during bomb-making activities and these particulates can tenaciously adhere to packing material, as well as to the clothing or skin of the bomb maker and could be detectable during transportation. A rapid screening method that detects this residue can serve as a first-line screening method in conjunction with more sensitive, but invasive, approaches. Explosives exhibit absorption features in the mid-infrared molecular fingerprint region that spans 3 to 15 mu m, which can be probed with many high-brightness sources such as fixed wavelength and tunable quantum cascade lasers, CO2, CO, and OPO lasers. Commercial uncooled microbolometer cameras typically have detection sensitivity from 7.5 to 13 mu m, spanning an absorption region for explosives detection with adequate signal-to-noise ratio. By illuminating a target on and off its absorption wavelengths, ratio images of suspected residue can be obtained without any sample preparation or cooperation and contact with the target. Our proof-of-principle experiment employed tunable CO2 lasers, with a tuning range from 9.2 to 10.6 mu m, overlapping minor absorption features of RDX and Tetryl. C1 [Bernacki, Bruce E.; Ho, Nicolas] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Bernacki, BE (reprint author), Pacific NW Natl Lab, 902 Battelle Blvd, Richland, WA 99352 USA. NR 10 TC 1 Z9 1 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 978-0-8194-7136-9 J9 P SOC PHOTO-OPT INS PY 2008 VL 6945 BP 94517 EP 94517 DI 10.1117/12.776917 PG 8 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BHX00 UT WOS:000257137100029 ER PT S AU Bisson, SE Crocker, RW Kulp, TJ Reichardt, TA Reilly, PTA Whitten, WB AF Bisson, Scott E. Crocker, Robert W. Kulp, Thomas J. Reichardt, Thomas A. Reilly, Peter T. A. Whitten, William B. BE Halvorson, CS Lehrfeld, D Saito, TT TI Confirmatory measurement channels for LIF-based bioaerosol instrumentation SO OPTICS AND PHOTONICS IN GLOBAL HOMELAND SECURITY IV SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Optics and Photonics in Global Homeland Security IV CY MAR 17-20, 2008 CL Orlando, FL SP SPIE AB As part of the U.S. Department of Homeland Security Detect-to-Protect (DTP) program, a multilab [Sandia National Laboratories (SNL), Lawrence Livermore National Laboratories (LLNL), Pacific Northwest National Laboratory (PNNL), Oak Ridge National Laboratory (ORNL), and Los Alamos National Laboratory (LANL)] effort is addressing the need for useable detect-to-warn bioaerosol sensors for public facility protection. Towards this end, the SNL team is investigating the use of rapid fluorogenic staining to infer the protein content of bioaerosols. This is being implemented in a flow cytometer wherein each particle detected generates coincident signals of correlated forward scatter, side scatter, and fluorescence. Several thousand such coincident signal sets are typically collected to generate a distribution describing the probability of observing a particle with certain scattering and fluorescence values. These data are collected for sample particles in both a stained and unstained state. A linear unmixing analysis is performed to differentiate components in the mixture. In this paper, we discuss the implementation of the staining process and the cytometric measurement, the results of their application to the analysis of known and blind samples, and a potential instrumental implementations that would use staining. C1 [Bisson, Scott E.; Kulp, Thomas J.; Reichardt, Thomas A.] Sandia Natl Labs, Livermore, CA 94551 USA. RP Bisson, SE (reprint author), Sandia Natl Labs, Livermore, CA 94551 USA. EM sebisso@sandia.gov NR 0 TC 0 Z9 0 U1 0 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 978-0-8194-7136-9 J9 PROC SPIE PY 2008 VL 6945 AR 69450S DI 10.1117/12.777698 PG 12 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BHX00 UT WOS:000257137100016 ER PT S AU Reichardt, TA Bisson, SE Crocker, RW Kulp, TJ AF Reichardt, Thomas A. Bisson, Scott E. Crocker, Robert W. Kulp, Thomas J. BE Halvorson, CS Lehrfeld, D Saito, TT TI Analysis of flow-cytometer scattering and fluorescence data to identify particle mixtures SO OPTICS AND PHOTONICS IN GLOBAL HOMELAND SECURITY IV SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Optics and Photonics in Global Homeland Security IV CY MAR 17-20, 2008 CL Orlando, FL SP SPIE ID SENSOR AB As part of the U.S. Department of Homeland Security Detect-to-Protect program, a multilab [Sandia National Laboratories (SNL), Lawrence Livermore National Laboratories (LLNL), Pacific Northwest National Laboratory (PNNL), Oak Ridge National Laboratory (ORNL), and Los Alamos National Laboratory (LANL)] effort is addressing the need for useable detect-to-warn bioaerosol sensors for public facility protection. Towards this end, the SNL team is employing rapid fluorogenic staining to infer the protein content of bioaerosols. This is being implemented in a flow cytometry platform wherein each particle detected generates coincident signals of forward scatter, side scatter, and fluorescence. Several thousand such coincident signal sets are typically collected to generate a probability distribution over the scattering and fluorescence values. A linear unmixing analysis is performed to differentiate components in the mixture. After forming a library of pure component distributions from measured pure material samples, the distribution of an unknown mixture of particles is treated as a linear combination of the pure component distributions. The scattering/fluorescence probability distribution data vector a is considered the product of two vectors, the fractional profile f and the scattering/fluorescence distributions from pure components P. A least squares procedure minimizes the magnitude of the residual vector e in the expression a = fp(T) + e. The profile f designates a weighting fraction for each particle type included in the set of pure components, providing the composition of the unknown mixture. We discuss testing of this analysis approach and steps we have taken to evaluate the effect of interferents, both known and unknown. C1 [Reichardt, Thomas A.; Bisson, Scott E.; Crocker, Robert W.; Kulp, Thomas J.] Sandia Natl Labs, Livermore, CA 94551 USA. RP Reichardt, TA (reprint author), Sandia Natl Labs, POB 969, Livermore, CA 94551 USA. EM tareich@sandia.gov NR 9 TC 0 Z9 0 U1 0 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 978-0-8194-7136-9 J9 PROC SPIE PY 2008 VL 6945 AR 69450R DI 10.1117/12.777407 PG 8 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BHX00 UT WOS:000257137100015 ER PT S AU Yang, L Hibbard, W Edwards, D Franco, D Fruetel, J Tucker, M Einfeld, W Knowlton, R Brown, G Brockmann, J Greenwalt, R Miles, R Raber, E Carlsen, T Krauter, P Dillon, M MacQueen, D Intrepido, T Hoppes, B Wilson, W Mancieri, S AF Yang, Lynn Hibbard, Wilthea Edwards, Donna Franco, David Fruetel, Julie Tucker, Mark Einfeld, Wayne Knowlton, Robert Brown, Gary Brockmann, John Greenwalt, Robert Miles, Robin Raber, Ellen Carlsen, Tina Krauter, Paula Dillon, Michael MacQueen, Don Intrepido, Tony Hoppes, Bill Wilson, Wendy Mancieri, Sav BE Halvorson, CS Lehrfeld, D Saito, TT TI Wide area restoration following biological contamination SO OPTICS AND PHOTONICS IN GLOBAL HOMELAND SECURITY IV SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Optics and Photonics in Global Homeland Security IV CY MAR 17-20, 2008 CL Orlando, FL SP SPIE DE wide area biological restoration; anthrax; decontamination; systems analysis; IBRD AB Current understanding of how to restore a wide area that has been contaminated following a large biological attack is limited. The Department of Homeland Security and Department of Defense are executing a four-year collaborative program named the Interagency Biological Restoration Demonstration (IBRD) program. This program is aimed at developing technologies, methods, plans and policies necessary to restore a wide area, including military installations and critical infrastructures, in the event of a large outdoor aerosol release of anthrax. The IBRD program partner pilot city is the Seattle Urban Area to include Fort Lewis, WA and McChord Air Force Base. A front-end systems analysis was conducted as part of IBRD, to: 1) assess existing technologies and processes for wide area restoration; from this, 2) develop an "as-is" decision framework for wide area restoration; and 3) identify and prioritize capability gaps. Qualitative assessments and quantitative analyses, including sensitivity, timeline and case study analyses, were conducted to evaluate existing processes and rank capability gaps. This paper describes the approach and results from this front-end systems analysis. C1 [Yang, Lynn; Edwards, Donna; Franco, David; Fruetel, Julie] Sandia Natl Labs, Livermore, CA 94550 USA. RP Yang, L (reprint author), Sandia Natl Labs, 7011 E Ave, Livermore, CA 94550 USA. EM liyang@sandia.gov NR 3 TC 0 Z9 0 U1 1 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 978-0-8194-7136-9 J9 PROC SPIE PY 2008 VL 6945 AR 69450I DI 10.1117/12.782226 PG 12 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BHX00 UT WOS:000257137100011 ER PT J AU Carrasquilla-Alvarez, J Castaneda, R Garcia-Sucerquia, J Schofield, MA Beleggia, M Zhu, Y Matteucci, G AF Carrasquilla-Alvarez, J. Castaneda, R. Garcia-Sucerquia, J. Schofield, M. A. Beleggia, M. Zhu, Y. Matteucci, G. TI Retrieving the complex degree of spatial coherence of electron beams SO OPTIK LA English DT Article ID CENTERED REDUCED MOMENTS; QUALITY DESCRIPTORS; SPOT MOMENTS AB The possibility to characterize the coherence properties of an electron source is presented. The method, based on the determination of centered-reduced moments of the beam spot, allows the evaluation of both amplitude and phase of the complex degree of spatial coherence. The experimental results are in agreement with a different approach based on the Fourier analysis and with calculations according to the Van Cittert-Zernike theorem. (C) 2006 Published by Elsevier GmbH. C1 [Schofield, M. A.; Beleggia, M.; Zhu, Y.] Assoc Univ Inc, Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. [Carrasquilla-Alvarez, J.; Castaneda, R.; Garcia-Sucerquia, J.] Univ Nacl Colombia, Sch Phys, Medellin, Colombia. [Garcia-Sucerquia, J.] Dalhousie Univ, Dept Phys, Halifax, NS B3H 3J5, Canada. [Matteucci, G.] Univ Bologna, Dept Phys, I-40127 Bologna, Italy. RP Schofield, MA (reprint author), Assoc Univ Inc, Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. EM carrasqu@ictp.it; rcastane@unalmed.edu.co; jigarcia@fizz.phys.dal.ca; schofieid@bnl.gov; beleggia@bnl.gov; zhu@bnl.gov; giorgio.matteucci@bo.infm.it RI Carrasquilla, Juan/H-3653-2014; OI Beleggia, Marco/0000-0002-2888-1888; Carrasquilla, Juan/0000-0001-7263-3462; Garcia-Sucerquia, Jorge/0000-0003-3449-6094 NR 13 TC 4 Z9 4 U1 0 U2 2 PU ELSEVIER GMBH, URBAN & FISCHER VERLAG PI JENA PA OFFICE JENA, P O BOX 100537, 07705 JENA, GERMANY SN 0030-4026 J9 OPTIK JI Optik PY 2008 VL 119 IS 3 BP 127 EP 133 DI 10.1016/j.ijleo.2006.07.007 PG 7 WC Optics SC Optics GA 267GD UT WOS:000253496600005 ER PT S AU Almaas, E Holder, A Livingstone, K AF Almaas, Eivind Holder, Allen Livingstone, Kevin BE Lim, GJ Lee, EK TI Introduction to Systems Biology for Mathematical Programmers SO OPTIMIZATION IN MEDICINE AND BIOLOGY SE Engineering and Management Innovation LA English DT Article; Book Chapter ID PROTEIN-INTERACTION NETWORKS; ESCHERICHIA-COLI MG1655; SCALE METABOLIC MODEL; COMPLEX NETWORKS; SACCHAROMYCES-CEREVISIAE; SENSITIVITY-ANALYSIS; PARAMETRIC ANALYSIS; FLUX ANALYSIS; YEAST; GENOME AB Many recent advances in biology, medicine, and health care are due to computational efforts that rely on new mathematical results. These mathematical tools lie in discrete mathematics, statistics and probability, and optimization, and when combined with savvy computational tools and an understanding of cellular biology, they are capable of remarkable results. One of the most significant areas of growth is in the field of systems biology, where we are using detailed biological information to construct models that describe larger entities. This chapter is designed to be an introduction to systems biology for individuals in operations research (OR) and mathematical programming who already know the Supporting Mathematics but are Unaware of current research in this field. C1 [Almaas, Eivind] Lawrence Livermore Natl Lab, Microbial Syst Biol Biosci & Biotechnol Div, Livermore, CA USA. [Holder, Allen] Trinity Univ, Dept Math, San Antonio, TX 78212 USA. [Livingstone, Kevin] Trinity Univ, Dept Biol, San Antonio, TX 78212 USA. RP Almaas, E (reprint author), Lawrence Livermore Natl Lab, Microbial Syst Biol Biosci & Biotechnol Div, Livermore, CA USA. NR 79 TC 1 Z9 1 U1 0 U2 0 PU AUERBACH PUBLICATIONS, TAYLOR & FRANCIS GROUP PI BOCA RATON PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA SN 2155-854X BN 978-0-8493-0563-4 J9 ENG MANAG INNOV PY 2008 BP 311 EP 353 D2 10.1201/9780849305696 PG 43 WC Engineering, Biomedical; Engineering, Industrial SC Engineering GA BKG38 UT WOS:000268012400011 ER PT J AU Klippenstein, S Crichton, H AF Klippenstein, Stephen Crichton, Hilary TI Model behaviour SO ORGANIC & BIOMOLECULAR CHEMISTRY LA English DT Editorial Material C1 [Klippenstein, Stephen] Argonne Natl Lab, Argonne, IL 60439 USA. RP Klippenstein, S (reprint author), Argonne Natl Lab, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1477-0520 J9 ORG BIOMOL CHEM JI Org. Biomol. Chem. PY 2008 VL 6 IS 6 BP C23 EP C23 PG 1 WC Chemistry, Organic SC Chemistry GA 273CW UT WOS:000253909000001 ER PT J AU Bird, JA Kleber, M Torn, MS AF Bird, Jeffrey A. Kleber, Markus Torn, Margaret S. TI C-13 and N-15 stabilization dynamics in soil organic matter fractions during needle and fine root decomposition SO ORGANIC GEOCHEMISTRY LA English DT Article ID CARBON DYNAMICS; FOREST SOIL; DENSITY FRACTIONATION; LITTER DECOMPOSITION; NITROGEN DYNAMICS; TEMPERATE FOREST; HUMIC SUBSTANCES; RESIDENCE TIMES; MECHANISMS; TURNOVER AB Little is known about how the chemical composition of plant litter affects the amount and nature of C and N stabilized as soil organic matter (SOM). We examined the fate of dual labeled C-13 and N-15 Ponderosa pine fine roots (< 2 mm) and needles decomposing for 2 yr in situ in a temperate conifer forest soil in the Sierra Nevada, CA, USA. We compared the distribution and stabilization of litter derived C and N in four SOM pools using a density fractionation procedure followed by an alkaline extraction of the dense fraction into fulvic, humic, and humin fractions. The C turnover times (estimated with natural abundance C-14) of these SOM fractions were distinct and ranged from 5 yr (light fraction) to 260 yr (insoluble humin). Input of C as roots resulted in 28%, more total C retained in soil when compared to inputs as needles. Twice as much root C-13 was present in the particulate soil (> 2 mm) than for needles, while bulk soil (< 2 mm) C-13 and N-15 recoveries were similar between litters. SOM fractions provided greater sensitivity than bulk soil and showed significant differences between litters in both the amount and chemical composition of C-13 and N-15 compounds recovered within SOM fractions. More needle C-13 was retained in humic and humin fractions than was C-13 from roots. The chemical composition of stabilized organic molecules differed fundamentally between needle and root sources within the dense fraction SOM pools, especially during the first year. Root inputs were stabilized predominately as N-rich biomolecules in the humic and humin fractions, while needles contributed C-rich biomolecules to these dense fraction SOM pools. The large pulse of C-rich compounds from the more labile needles recovered in the humic and humin fractions did not persist after 1.5 yr, suggesting that low C:N ratio compounds derived from decomposing litters may stabilize more strongly and persist within the dense fraction SOM pools. The fundamental differences in C and N pathways during decomposition and stabilization of below ground (root) and above ground (needle) litters suggest that shifts in plant C allocation may influence the long term stability of plant-derived C in soil. (c) 2007 Elsevier Ltd. All rights reserved. C1 [Bird, Jeffrey A.] CUNY, Queens Coll, Sch Earth & Environm Sci, Flushing, NY 11367 USA. [Bird, Jeffrey A.; Kleber, Markus; Torn, Margaret S.] Lawrence Berkeley Natl Lab, Earth Sci Lab, Berkeley, CA 94720 USA. RP Bird, JA (reprint author), CUNY, Queens Coll, Sch Earth & Environm Sci, E-220 New Sci Bldg,65-30 Kissena Blvd, Flushing, NY 11367 USA. EM jbird@qc.cuny.edu RI Bird, Jeffrey/H-8751-2012; Torn, Margaret/D-2305-2015 OI Bird, Jeffrey/0000-0002-0939-0637; NR 42 TC 58 Z9 60 U1 9 U2 75 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0146-6380 J9 ORG GEOCHEM JI Org. Geochem. PY 2008 VL 39 IS 4 BP 465 EP 477 DI 10.1016/j.orggeochem.2007.12.003 PG 13 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 304RF UT WOS:000256125900008 ER PT S AU Zhong, C Bao, YP Vu, DM Dyer, RB Martinez, JS AF Zhong, Chang Bao, Yuping Vu, Dung M. Dyer, R. Brian Martinez, Jennifer S. BE Barbe, C Laine, RM Sanchez, C Schubert, U TI Fabrication of fluorescent cellular probes: Hybrid dendrimer/gold nanoclusters SO ORGANIC/INORGANIC HYBRID MATERIALS - 2007 SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on Organic-Inorganic Hybrid Materials CY APR 09-13, 2007 CL San Francisco, CA SP Mat Res Soc ID METAL NANOPARTICLES; GOLD CLUSTERS; QUANTUM DOTS; AU CLUSTERS; PHOTOLUMINESCENCE; NANOCRYSTALS; EMISSION AB Fluorescent metal nanoclusters, which consist of collections of small numbers of noble metal atoms, are of great interest in photochemistry and photophysics due to their strong size-dependent emission. Historically their generation was confined to gaseous and solid phases; however, recently a unique organic/inorganic hybrid materials approach was developed that utilizes dendrimers as templates to protect nanoclusters from solution based fluorescence quenching. These hybrid dendrimer/gold nanoclusters are water-soluble and highly fluorescent. Yet there are several intrinsic deficiencies in their synthetic method: first, NaBH4, a toxic chemical, was used as reducing agent in the reaction; and second, the reaction yield was low due to the concurrent formation of large, non-emissive, gold particles. Here we report a particle-free method to produce dendrimer-encapsulated gold nanoclusters in high-yield. Proof of concept is demonstrated using OH-terminated poly(amidoamine) dendrimer and Au(PX3)(3)Cl (X = Ph, Me), but the approach can also-be extended to the combination of other dendrimers and organic noble metal salts. Our approach yields fluorescent clusters with homogeneous size distribution. These clusters can be transferred to aqueous solution and used directly for biological applications. C1 [Zhong, Chang; Bao, Yuping; Martinez, Jennifer S.] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87544 USA. RP Zhong, C (reprint author), Los Alamos Natl Lab, Ctr Integrated Nanotechnol, MS K771, Los Alamos, NM 87544 USA. NR 31 TC 0 Z9 0 U1 0 U2 3 PU MATERIALS RESEARCH SOCIETY PI WARRENDALE PA 506 KEYSTONE DRIVE, WARRENDALE, PA 15088-7563 USA SN 0272-9172 BN 978-1-55899-967-1 J9 MATER RES SOC SYMP P PY 2008 VL 1007 BP 265 EP 270 PG 6 WC Materials Science, Multidisciplinary; Polymer Science SC Materials Science; Polymer Science GA BHV55 UT WOS:000256796400032 ER PT S AU Chen, Y Cai, M Xiao, T Hellerich, E Shinar, J AF Chen, Ying Cai, Min Xiao, Teng Hellerich, Emily Shinar, Joseph BE So, F Adachi, C TI Optically Detected Magnetic Resonance (ODMR) Studies of Trions in Organic Light-Emitting Materials and OLEDs, and Their Possible Relation to Long-Term OLED Degradation SO ORGANIC LIGHT EMITTING MATERIALS AND DEVICES XII SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 12th Conference on Organic Light Emitting Materials and Devices CY AUG 10-12, 2008 CL San Diego, CA SP SPIE DE OLEDs; photoluminescence quenching processes; electroluminescence quenching processes; bipolarons; trions; OLED degradation ID PI-CONJUGATED POLYMERS; COMBINATORIAL FABRICATION; PHOTOEXCITED STATES; DEVICES; DIODES; ELECTROLUMINESCENCE; PHOTOLUMINESCENCE; DYNAMICS; POLARONS; PPV AB Some recent photoluminescence (PL)- and electroluminescence (EL)-detected magnetic resonance (PLDMR and ELDMR, respectively) studies of the negative (PL- and EL-quenching) spin 1/2 resonance are reviewed. These include the resonances in poly[2-(N-carbazolyl)-5-(2'-ethyl)-hexoxy-1,4-phenylenevinylene] (CzEh-PPV) films, rubrene films, tris(quinolinolate) Al (Alq(3)) OLEDs, rubrene-doped Alq(3) OLEDs, and fac tris(2-phenylpyridine) iridium [Ir(ppy(3))]- doped poly(N-vinyl carbazole) (PVK) polymer LEDs (PLEDs). The resonances are all assigned to quenching of SEs by trions, which are bipolarons stabilized by a counterpolaron or counterion. As bipolarons arc spinless, their formation from two like-charged polarons is spin-dependent, and hence enhanced at resonance. This enhanced formation, and the resulting enhanced quenching of SEs, yields the negative spin 1/2 PLDMR and ELDMR. As previously shown, since trion formation also reduces the mobility of the trapped carriers, this process also results in a negative spin 1/2 electrical Current-detected magnetic resonance (EDMR). Importantly, since the counterpolaron is usually trapped, e.g., at organic/cathode or organic/organic interfaces, or at impurity sites such the oxygen center in rubrene, it is suspected that the trions might be responsible for the long term degradation of OLEDs and PLEDs associated with abrupt junctions or impurities. C1 [Chen, Ying] Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA. RP Chen, Y (reprint author), Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA. RI Cai, Min/A-2678-2014 NR 39 TC 0 Z9 0 U1 0 U2 7 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-7271-7 J9 P SOC PHOTO-OPT INS PY 2008 VL 7051 AR 70510G DI 10.1117/12.796198 PG 7 WC Instruments & Instrumentation; Nuclear Science & Technology; Optics SC Instruments & Instrumentation; Nuclear Science & Technology; Optics GA BIS50 UT WOS:000262438400008 ER PT S AU Boye, RR Washburn, CM Samora, S Kernme, SA Wheeler, DR Buller, DL AF Boye, R. R. Washburn, C. M. Samora, S. Kernme, S. A. Wheeler, D. R. Buller, D. L. BE Nelson, RL Kajzar, F Kaino, T TI Effect of ionizing radiation on infrared polarizers based on conductive polymer SO ORGANIC PHOTONIC MATERIALS AND DEVICES X SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Organic Photonic Materials and Devices X CY JAN 22-24, 2008 CL San Jose, CA SP SPIE DE conductive polymer; subwavelength grating; polarization; infrared; microstructure devices; ionizing radiation ID POLYPYRROLE FILMS; POLYANILINE; PYRROLE; INTERFACE; SILICON; ARRAYS AB Conductive polymers have become an extremely useful class of materials for many optical applications. We have developed an electrochemical growth method for depositing highly conductive (similar to 100 S/cm) polypyrrole. Additionally, we have adapted advanced fabrication methods for use with the polypyrrole resulting in gratings with submicron features. This conductive polymer micro-wire grid provides an optical polarizer with unique properties. When the polymer is exposed to ionizing radiation, its conductivity is affected and the polarization properties of the device, specifically the extinction ratio, change in a corresponding manner. This change in polarization properties can be determined by optically interrogating the device, possibly from a remote location. The result is a passive radiation-sensitive sensor with very low optical visibility. The ability to interrogate the device from a safe standoff distance provides a device useful in potentially dangerous environments. Also, the passive nature of the device make it applicable in applications where external power is not available. We will review the polymer deposition, fabrication methods and device design and modeling. The characterization of the polymer's sensitivity to ionizing radiation and optical testing of infrared polarizers before and after irradiation will also be presented. These experimental results will highlight the usefulness of the conductive infrared polarizer to many security and monitoring applications. C1 [Boye, R. R.; Washburn, C. M.; Kernme, S. A.; Wheeler, D. R.; Buller, D. L.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Boye, RR (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 30 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 978-0-8194-7066-9 J9 P SOC PHOTO-OPT INS PY 2008 VL 6891 BP U129 EP U139 PG 11 WC Chemistry, Applied; Optics; Polymer Science SC Chemistry; Optics; Polymer Science GA BHO41 UT WOS:000254820100014 ER PT S AU Ogawa, K Achyuthan, KE Chemburu, S Ji, E Liu, Y Lopez, GP Schanze, KS Whitten, DG AF Ogawa, K. Achyuthan, K. E. Chemburu, S. Ji, E. Liu, Y. Lopez, G. P. Schanze, K. S. Whitten, D. G. BE Bernards, DA Owens, RM Malliaras, GG TI Polyelectrolyte-Based Fluorescent Sensors SO ORGANIC SEMICONDUCTORS IN SENSOR APPLICATIONS SE Springer Series in Materials Science LA English DT Article; Book Chapter ID CONJUGATED POLYMER FLUORESCENCE; HIGHLY SENSITIVE DETECTION; CYANINE DYE; J-AGGREGATE; CATIONIC POLYELECTROLYTE; FLUOROMETRIC ASSAY; DNA; SURFACTANT; ASSEMBLIES; PHOSPHOLIPASE-A2 C1 [Ogawa, K.; Ji, E.; Liu, Y.; Schanze, K. S.] Univ Florida, Dept Chem, Gainesville, FL 32611 USA. [Chemburu, S.; Lopez, G. P.; Whitten, D. G.] Univ New Mexico, Dept Chem & Nucl Engn, Ctr Biomed Engn, Albuquerque, NM 87131 USA. [Achyuthan, K. E.] Sandia Natl Labs, Dept Biosensors & Nanomat, Albuquerque, NM 87123 USA. RP Ogawa, K (reprint author), Univ Florida, Dept Chem, Gainesville, FL 32611 USA. NR 60 TC 3 Z9 3 U1 1 U2 1 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0933-033X BN 978-3-540-76313-0 J9 SPRINGER SER MATER S PY 2008 VL 107 BP 39 EP 60 D2 10.1007/978-3-540-76314-7 PG 22 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BKC23 UT WOS:000267736900002 ER PT S AU Shinar, R Shinar, J AF Shinar, R. Shinar, J. BE Bernards, DA Owens, RM Malliaras, GG TI Structurally Integrated Photoluminescent Chemical and Biological Sensors: An Organic Light-Emitting Diode-Based Platform SO ORGANIC SEMICONDUCTORS IN SENSOR APPLICATIONS SE Springer Series in Materials Science LA English DT Article; Book Chapter ID METHYLOSINUS-TRICHOSPORIUM OB3B; LUMINESCENT OXYGEN SENSORS; ANTHRAX LETHAL FACTOR; SOL-GEL MATRIX; DISSOLVED-OXYGEN; COMBINATORIAL FABRICATION; MULTIANALYTE IMMUNOASSAYS; THERMODYNAMIC PROPERTIES; RUTHENIUM(II) COMPLEXES; EXCITATION SOURCE C1 [Shinar, R.] Iowa State Univ, Microelect Res Ctr, Ames, IA 50011 USA. [Shinar, J.] Iowa State Univ, Ames Lab, USDOE, Ames, IA 50011 USA. [Shinar, J.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. RP Shinar, R (reprint author), Iowa State Univ, Microelect Res Ctr, Ames, IA 50011 USA. NR 106 TC 0 Z9 0 U1 2 U2 2 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0933-033X BN 978-3-540-76313-0 J9 SPRINGER SER MATER S PY 2008 VL 107 BP 61 EP 96 D2 10.1007/978-3-540-76314-7 PG 36 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BKC23 UT WOS:000267736900003 ER PT S AU Moller, P Slerk, AJ Bengtsson, R Ichikawa, T Iwamoto, A AF Moller, P. Slerk, A. J. Bengtsson, R. Ichikawa, T. Iwamoto, A. BE Suda, T Nozawa, T Ohnishi, A Kato, K Fujimoto, M Kajino, T Kubono, S TI New global calculation of nuclear masses and fission barriers for astrophysical applications SO ORIGIN OF MATTER AND EVOLUTION OF GALAXIES SE AIP Conference Proceedings LA English DT Proceedings Paper CT 10th International Symposium on Origin of Matter and Evolution of Galaxies CY DEC 04-07, 2007 CL Sapporo, JAPAN SP Hokkaido Univ, Dept Cosmosci, Natl Astron Observ Japan, Univ Tokyo, Ctr Nucl Study, RIKEN, Okasa Univ, Res Ctr Nucl Phys, KEK, Univ Tokyo, Dept Astron, Sci Council Japan, Phys Soc Japan, Astron Soc Japan DE nuclear masses; fission barriers AB The FRDM(1992) mass model [1] has an accuracy of 0.669 MeV in the region where its parameters were determined. For the 529 masses that have been measured since, its accuracy is 0.46 MeV, which is encouraging for applications far from stability in astrophysics. We are developing an improved mass model, the FRDM(2008). The improvements in the calculations with respect to the FRDM(1992) are in two main areas. (1) The macroscopic model parameters are better optimized. By simulation (adjusting to a limited set of now known nuclei) we can show that this actually makes the results more reliable in new regions of nuclei. (2) The ground-state deformation parameters are more accurately calculated. We minimize the energy in a four-dimensional deformation space (epsilon(2), epsilon(3), epsilon(4), epsilon(6)) using a grid interval of 0.01 in all 4 deformation variables. The (non-finalized) FRDM (2008-a) has an accuracy of 0.596 MeV with respect to the 2003 Audi mass evaluation before triaxial shape degrees of freedom are included (in progress). When triaxiality effects are incorporated preliminary results indicate that the model accuracy will improve further, to about 0.586 Mev. We also discuss very large-scale fission-barrier calculations in the related FRLDM (2002) model, which has been shown to reproduce very satisfactorily known fission properties, for example barrier heights from Se-70 to the heaviest elements, multiple fission modes in the Ra region, asymmetry of mass division in fission and the triple-humped structure found in light actinides. In the superheavy region we find barriers consistent with the observed half-lives. We have completed production calculations and obtain barrier heights for 5254 nuclei heavier than A = 170 for all nuclei between the proton and neutron drip lines. The energy is calculated for 5009325 different shapes for each nucleus and the optimum barrier between ground state and separated fragments is determined by use of an "immersion" technique. C1 [Moller, P.; Slerk, A. J.] Los Alamos Natl Lab, Div Theoret, POB 1663, Los Alamos, NM 87545 USA. [Bengtsson, R.] Lund Inst Technol, Dept Math Phys, SE-22100 Lund, Sweden. [Ichikawa, T.] RIKEN, Nishina Ctr, Wako, Saitama 3510198, Japan. [Iwamoto, A.] Japan Atom Energy Agcy JAEA, Naka, Ibaraki 3191195, Japan. RP Moller, P (reprint author), Los Alamos Natl Lab, Div Theoret, POB 1663, Los Alamos, NM 87545 USA. OI Moller, Peter/0000-0002-5848-3565 NR 9 TC 7 Z9 7 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 978-0-7354-0537-0 J9 AIP CONF PROC PY 2008 VL 1016 BP 150 EP + PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BHT92 UT WOS:000256349600022 ER PT S AU Rehm, KE AF Rehm, K. E. BE Suda, T Nozawa, T Ohnishi, A Kato, K Fujimoto, M Kajino, T Kubono, S TI Structure and reaction experiments for nuclear astrophysics SO ORIGIN OF MATTER AND EVOLUTION OF GALAXIES SE AIP Conference Proceedings LA English DT Proceedings Paper CT 10th International Symposium on Origin of Matter and Evolution of Galaxies CY DEC 04-07, 2007 CL Sapporo, JAPAN SP Hokkaido Univ, Dept Cosmosci, Natl Astron Observ Japan, Univ Tokyo, Ctr Nucl Study, RIKEN, Okasa Univ, Res Ctr Nucl Phys, KEK, Univ Tokyo, Dept Astron, Sci Council Japan, Phys Soc Japan, Astron Soc Japan DE nuclear astrophysics ID CROSS-SECTION AB Astrophysics is a rapidly growing field, driven by observations from ground and space-based telescopes. Nuclear physics provides critical input parameters, such as cross sections, masses and half-lives, which are important for the interpretation of the observational data. In this contribution recent accomplishments from structure and reaction experiments relevant to studies in nuclear astrophysics will be discussed. C1 Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. RP Rehm, KE (reprint author), Argonne Natl Lab, Div Phys, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 58 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 978-0-7354-0537-0 J9 AIP CONF PROC PY 2008 VL 1016 BP 171 EP 178 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BHT92 UT WOS:000256349600025 ER PT S AU Togano, Y Gomi, T Motobayashi, T Ando, Y Aoi, N Baba, H Demichi, K Elekes, Z Fukuda, N Fulop, Z Futakami, U Hasegawa, H Higurashi, Y Ieki, K Imai, N Ishihara, M Ishikawa, K Iwasa, N Iwasaki, H Kanno, S Kondo, Y Kubo, T Kubono, S Kunibu, M Kurita, K Matsuyama, YU Michimasa, S Minemura, T Miura, M Murakami, H Nakamura, T Notani, M Ota, S Saito, A Sakurai, H Serata, M Shimoura, S Sugimoto, T Takeshita, E Takeuchi, S Ue, K Yamada, K Yanagisawa, Y Yoneda, K Yoshida, A AF Togano, Y. Gomi, T. Motobayashi, T. Ando, Y. Aoi, N. Baba, H. Demichi, K. Elekes, Z. Fukuda, N. Fulop, Zs. Futakami, U. Hasegawa, H. Higurashi, Y. Ieki, K. Imai, N. Ishihara, M. Ishikawa, K. Iwasa, N. Iwasaki, H. Kanno, S. Kondo, Y. Kubo, T. Kubono, S. Kunibu, M. Kurita, K. Matsuyama, Y. U. Michimasa, S. Minemura, T. Miura, M. Murakami, H. Nakamura, T. Notani, M. Ota, S. Saito, A. Sakurai, H. Serata, M. Shimoura, S. Sugimoto, T. Takeshita, E. Takeuchi, S. Ue, K. Yamada, K. Yanagisawa, Y. Yoneda, K. Yoshida, A. BE Suda, T Nozawa, T Ohnishi, A Kato, K Fujimoto, M Kajino, T Kubono, S TI Investigation of stellar Si-26(p,gamma)P-27 reaction via Coulomb dissociation SO ORIGIN OF MATTER AND EVOLUTION OF GALAXIES SE AIP Conference Proceedings LA English DT Proceedings Paper CT 10th International Symposium on Origin of Matter and Evolution of Galaxies CY DEC 04-07, 2007 CL Sapporo, JAPAN SP Hokkaido Univ, Dept Cosmosci, Natl Astron Observ Japan, Univ Tokyo, Ctr Nucl Study, RIKEN, Okasa Univ, Res Ctr Nucl Phys, KEK, Univ Tokyo, Dept Astron, Sci Council Japan, Phys Soc Japan, Astron Soc Japan DE reaction induced by unstable nuclei; Coulomb excitation; and nucleosynthesis in novae; supernovae and other explosive environments; 20 <= A <= 38 ID PROTON CAPTURE; NUCLEOSYNTHESIS; RATES; AL-26; LINE; B-8 AB The Coulomb dissociation of the proton-rich nuclei P-27 was studied experimentally using P-27 beams at 57 MeV/nucleon with a lead target. The radiative widths of the low-lying excited state in (27)p were deduced. The resonant capture reaction rate of stellar Si-26(p,gamma)(27)p through these states was estimated using the measured radiative widths. The astrophysical implications obtained from the extracted reaction rate will be discussed. C1 [Togano, Y.; Ando, Y.; Demichi, K.; Futakami, U.; Hasegawa, H.; Ieki, K.; Kunibu, M.; Kurita, K.; Matsuyama, Y. U.; Murakami, H.; Serata, M.] Rikkyo Univ, Dept Phys, Tokyo 1718501, Japan. [Gomi, T.] Natl Inst Radiol Sci, Chiba 2638555, Japan. [Motobayashi, T.; Aoi, N.; Baba, H.; Fukuda, N.; Higurashi, Y.; Ishihara, M.; Kanno, S.; Kubo, T.; Sakurai, H.; Sugimoto, T.; Takeshita, E.; Takeuchi, S.; Yamada, K.; Yanagisawa, Y.; Yoneda, K.; Yoshida, A.] RIKEN, RIKEN Nishi Ctr, Wako, Saitama 3510198, Japan. [Fulop, Zs.] ATOMKI, Debrecen, Hungary. [Imai, N.] High Energy Accelerator Org, KEK, Tsukuba, Ibaraki 3050801, Japan. [Ishikawa, K.; Kondo, Y.; Miura, M.; Nakamura, T.] Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan. [Iwasa, N.] Tohoku Univ, Dept Phys, Miyazaki 9808578, Japan. [Iwasaki, H.; Ue, K.] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan. [Kubono, S.; Ota, S.; Saito, A.; Shimoura, S.; Ue, K.] Univ Tokyo, Ctr Nucl Study, Wako, Saitama 3510198, Japan. [Minemura, T.] Natl Canc Ctr, Chiba 2778577, Japan. [Notani, M.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. RP Togano, Y (reprint author), Rikkyo Univ, Dept Phys, Tokyo 1718501, Japan. EM toga@ne.rikkyo.ac.jp; motobaya@riken.jp; ishikawa@particle.sci.hokudai.ac.jp; kubono@cns.s.u-tokyo.ac.jp; kyoneda@riken.jp RI Fulop, Zsolt/B-2262-2008; Elekes, Zoltan/J-4531-2012; Nakamura, Takashi/N-5390-2015; Takeuchi, Satoshi/O-1529-2016 OI Nakamura, Takashi/0000-0002-1838-9363; NR 19 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 978-0-7354-0537-0 J9 AIP CONF PROC PY 2008 VL 1016 BP 193 EP + PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BHT92 UT WOS:000256349600028 ER PT S AU Fischer, T Gogelein, P Liebendorfer, M Mezzacappa, A Thielemann, KF AF Fischer, T. Goegelein, P. Liebendoerfer, M. Mezzacappa, A. Thielemann, K. -F. BE Suda, T Nozawa, T Ohnishi, A Kato, K Fujimoto, M Kajino, T Kubono, S TI The accretion phase of core collapse supernovae SO ORIGIN OF MATTER AND EVOLUTION OF GALAXIES SE AIP Conference Proceedings LA English DT Proceedings Paper CT 10th International Symposium on Origin of Matter and Evolution of Galaxies CY DEC 04-07, 2007 CL Sapporo, JAPAN SP Hokkaido Univ, Dept Cosmosci, Natl Astron Observ Japan, Univ Tokyo, Ctr Nucl Study, RIKEN, Okasa Univ, Res Ctr Nucl Phys, KEK, Univ Tokyo, Dept Astron, Sci Council Japan, Phys Soc Japan, Astron Soc Japan DE supernovae; explosions; black hole formation ID NEUTRINO; HYDRODYNAMICS; EXPLOSION; EQUATION; MATTER; STATE; DENSE; HOT AB We present data from recent core collapse simulations, using spherically symmetric general relativistic radiation hydrodynamics featuring a three-flavor neutrino Boltzmann transport solver and an equation of state (eos) for hot and dense nuclear matter. A nuclear reaction network has recently been implemented, which allows us to investigate explosion models into the neutrino wind phase several seconds after core bounce. In the absence of an earlier explosion, the continuous accretion of outer layers of the progenitor star lead eventually to the collapse of the protoneutron star (PNS) at the very center and the formation of a black hole. C1 [Fischer, T.; Liebendoerfer, M.; Thielemann, K. -F.] Univ Basel, Dept Phys, CH-4056 Basel, Switzerland. [Goegelein, P.] Univ Tubingen, Inst Theo Phys, D-72076 Tubingen, Germany. [Mezzacappa, A.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RP Fischer, T (reprint author), Univ Basel, Dept Phys, CH-4056 Basel, Switzerland. EM tobias.fischer@unibas.ch RI Mezzacappa, Anthony/B-3163-2017 OI Mezzacappa, Anthony/0000-0001-9816-9741 NR 15 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 978-0-7354-0537-0 J9 AIP CONF PROC PY 2008 VL 1016 BP 277 EP + PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BHT92 UT WOS:000256349600040 ER PT S AU Smith, MS AF Smith, Michael S. BE Suda, T Nozawa, T Ohnishi, A Kato, K Fujimoto, M Kajino, T Kubono, S TI ORNL radioactive beams for stellar explosion studies SO ORIGIN OF MATTER AND EVOLUTION OF GALAXIES SE AIP Conference Proceedings LA English DT Proceedings Paper CT 10th International Symposium on Origin of Matter and Evolution of Galaxies CY DEC 04-07, 2007 CL Sapporo, JAPAN SP Hokkaido Univ, Dept Cosmosci, Natl Astron Observ Japan, Univ Tokyo, Ctr Nucl Study, RIKEN, Okasa Univ, Res Ctr Nucl Phys, KEK, Univ Tokyo, Dept Astron, Sci Council Japan, Phys Soc Japan, Astron Soc Japan DE nuclear astrophysics; nucleosynthesis; r-process; rp-process; radioactive beam; stellar explosions; nova; supernova; X-ray burst; thermonuclear reaction rates; nuclear data; visualization; simulations; waiting point; reaction network ID R-PROCESS; NEUTRON-CAPTURE; HRIBF AB Thermonuclear reactions on unstable nuclei generate the energy that power nova explosions and X-ray bursts. In these explosions and others such as supernovae, these reactions serve to synthesize nuclei that (via their decay) can serve as tracers of the explosion mechanism. A powerful approach to improve our understanding of these explosions is to utilize beams of radioactive nuclei for direct and indirect measurements of these reactions. We are pursuing this approach at the Holifield Radioactive Ion Beam Facility (HRIBF) at Oak Ridge National Laboratory (ORNL) to study reactions in the rp-process (with beams of F-17,F-18) and the r-process (with beam S of Ge-82, Se-84 Sn-130,Sn-132, Te-134). These measurements are combined with synergistic data evaluations and element synthesis calculations. Highlights of recent results are presented. C1 [Smith, Michael S.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RP Smith, MS (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. EM smithms@ornl.gov NR 32 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 978-0-7354-0537-0 J9 AIP CONF PROC PY 2008 VL 1016 BP 301 EP 306 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BHT92 UT WOS:000256349600044 ER PT S AU Smith, MS Bruner, BD Kozub, RL Roberts, LF Tytler, D Fuller, GM Lingerfelt, E Hix, WR Nesaraja, CD AF Smith, Michael S. Bruner, Blake D. Kozub, Raymond L. Roberts, Luke F. Tytler, David Fuller, George M. Lingerfelt, Eric Hix, W. Raphael Nesaraja, Caroline D. BE Suda, T Nozawa, T Ohnishi, A Kato, K Fujimoto, M Kajino, T Kubono, S TI Big Bang Nucleosynthesis: Impact of nuclear physics uncertainties on baryonic matter density constraints SO ORIGIN OF MATTER AND EVOLUTION OF GALAXIES SE AIP Conference Proceedings LA English DT Proceedings Paper CT 10th International Symposium on Origin of Matter and Evolution of Galaxies CY DEC 04-07, 2007 CL Sapporo, JAPAN SP Hokkaido Univ, Dept Cosmosci, Natl Astron Observ Japan, Univ Tokyo, Ctr Nucl Study, RIKEN, Okasa Univ, Res Ctr Nucl Phys, KEK, Univ Tokyo, Dept Astron, Sci Council Japan, Phys Soc Japan, Astron Soc Japan DE cosmology; big bang nucleosynthesis; thermonuclear reactions; reaction rates ID COSMOLOGY AB We performed new Big Bang Nucleosynthesis simulations with the bigbangonline.org suite of codes to determine, from the nuclear physics perspective, the highest achievable precision of the constraint on the baryon-to-photo ratio eta given current observational uncertainties. We also performed sensitivity studies to determine the impact that particular nuclear physics measurements would have on the uncertainties of predicted abundances and on the eta constraint. C1 [Smith, Michael S.; Roberts, Luke F.; Lingerfelt, Eric; Hix, W. Raphael; Nesaraja, Caroline D.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. [Bruner, Blake D.; Kozub, Raymond L.] Tennessee Technol Univ, Dept Phys, Cookeville, TN 38505 USA. [Tytler, David; Fuller, George M.] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA. [Lingerfelt, Eric; Nesaraja, Caroline D.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. RP Smith, MS (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RI Hix, William/E-7896-2011 OI Hix, William/0000-0002-9481-9126 FU U.S. Department of Energy [DE-AC05-00OR22725] FX ORNL is managed by UT-Battelle, LLC for the U.S. Department of Energy under contract DE-AC05-00OR22725. NR 10 TC 1 Z9 1 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 978-0-7354-0537-0 J9 AIP CONF PROC PY 2008 VL 1016 BP 403 EP + PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BHT92 UT WOS:000256349600058 ER PT S AU Sunayama, T Smith, MS Lingerfelt, E Buckner, K Hix, WR Nesaraja, CD AF Sunayama, Tomomi Smith, Mchael S. Lingerfelt, Eric Buckner, Kim Hix, W. Raphael Nesaraja, Caroline D. BE Suda, T Nozawa, T Ohnishi, A Kato, K Fujimoto, M Kajino, T Kubono, S TI Waiting points in nova and X-ray burst nucleosynthesis SO ORIGIN OF MATTER AND EVOLUTION OF GALAXIES SE AIP Conference Proceedings LA English DT Proceedings Paper CT 10th International Symposium on Origin of Matter and Evolution of Galaxies CY DEC 04-07, 2007 CL Sapporo, JAPAN SP Hokkaido Univ, Dept Cosmosci, Natl Astron Observ Japan, Univ Tokyo, Ctr Nucl Study, RIKEN, Okasa Univ, Res Ctr Nucl Phys, KEK, Univ Tokyo, Dept Astron, Sci Council Japan, Phys Soc Japan, Astron Soc Japan DE nova; X-ray burst; nucleosynthesis; waiting point reaction network AB In nova and X-ray burst nucleosynthesis, waiting points are nuclei in the reaction path which delay the nuclear flow towards heavier nuclei, typically because of a weak proton capture reaction and a long beta(+) lifetime. Waiting points can influence the energy generation and final abundances synthesized in these explosions. We have constructed a systematic, quantitative set of criteria to identify rp-process waiting points, and use them to search for waiting points in post-processing simulations of novae and X-ray bursts. These criteria have been incorporated into the Computational Infrastructure for Nuclear Astrophysics, online at nucastrodata.org, to enable anyone to run customized searches for waiting points. C1 [Sunayama, Tomomi] Knox Coll, 2 East South St, Galesburg, IL 61401 USA. [Sunayama, Tomomi] Oak Ridge Inst Sci Educ, Oak Ridge, TN 37831 USA. [Smith, Mchael S.; Lingerfelt, Eric; Buckner, Kim; Hix, W. Raphael; Nesaraja, Caroline D.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. [Lingerfelt, Eric; Buckner, Kim; Nesaraja, Caroline D.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. RP Sunayama, T (reprint author), Knox Coll, 2 East South St, Galesburg, IL 61401 USA. RI Hix, William/E-7896-2011 OI Hix, William/0000-0002-9481-9126 FU U.S. Department of Energy [DE-AC05-00OR22725]; ORISE HERE program FX ORNL is managed by UT-Battelle, LLC for the U.S. Department of Energy under contract DE-AC05-00OR22725. TS was partially supported by the ORISE HERE program. 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 978-0-7354-0537-0 J9 AIP CONF PROC PY 2008 VL 1016 BP 415 EP + PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BHT92 UT WOS:000256349600062 ER PT S AU Smith, MS Cyburt, R Schatz, H Wiescher, M Smith, K Warren, S Ferguson, R Lingerfelt, E Buckner, K Nesaraja, CD AF Smith, Michael S. Cyburt, Richard Schatz, Hendrik Wiescher, Michael Smith, Karl Warren, Scott Ferguson, Ryan Lingerfelt, Eric Buckner, Kim Nesaraja, Caroline D. BE Suda, T Nozawa, T Ohnishi, A Kato, K Fujimoto, M Kajino, T Kubono, S TI Thermonuclear reaction rate libraries and software tools for nuclear astrophysics research SO ORIGIN OF MATTER AND EVOLUTION OF GALAXIES SE AIP Conference Proceedings LA English DT Proceedings Paper CT 10th International Symposium on Origin of Matter and Evolution of Galaxies CY DEC 04-07, 2007 CL Sapporo, JAPAN SP Hokkaido Univ, Dept Cosmosci, Natl Astron Observ Japan, Univ Tokyo, Ctr Nucl Study, RIKEN, Okasa Univ, Res Ctr Nucl Phys, KEK, Univ Tokyo, Dept Astron, Sci Council Japan, Phys Soc Japan, Astron Soc Japan DE reaction rate; nucleosynthesis; stellar modeling; software; nuclear data; evaluations AB Thermonuclear reaction rates are a crucial input for simulating a wide variety of astrophysical environments. A new collaboration has been formed to ensure that astrophysical modelers have access to reaction rates based on the most recent experimental and theoretical nuclear physics information. To reach this goal, a new version of the REACLIB library has been created by the Joint Institute for Nuclear Astrophysics (JINA), now available online at http://www.nscl.msu.edu/-nero/db. A complementary effort is the development of software tools in the Computational Infrastructure for Nuclear Astrophysics, online at nucastrodata.org, to streamline, manage, and access the workflow of the reaction evaluations from their initiation to peer review to incorporation into the library. Details of these new projects will be described. C1 [Smith, Michael S.; Lingerfelt, Eric; Buckner, Kim; Nesaraja, Caroline D.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. [Cyburt, Richard; Schatz, Hendrik; Smith, Karl; Warren, Scott; Ferguson, Ryan] Michigan State Univ, Dept Phys & Astron, Natl Superconduct Cyclotron Lab, E Lansing, MI 48824 USA. [Wiescher, Michael] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. [Lingerfelt, Eric; Buckner, Kim; Nesaraja, Caroline D.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. RP Smith, MS (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RI Smith, Karl/A-9864-2013 OI Smith, Karl/0000-0003-2740-5449 FU UT-Battelle; U.S. Department of Energy [DE-AC05-00OR22725]; MSU NSCL; National Science Foundation FX ORNL is managed by UT-Battelle, LLC for the U.S. Department of Energy under contract DE-AC05-00OR22725. MSU NSCL and JINA are funded by the National Science Foundation. NR 1 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 978-0-7354-0537-0 J9 AIP CONF PROC PY 2008 VL 1016 BP 466 EP + PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BHT92 UT WOS:000256349600079 ER PT J AU Cooper, WJ Mezyk, SP Peller, JR Cole, SK Song, WH Mincher, BJ Peake, BM AF Cooper, William J. Mezyk, Stephen P. Peller, Julie R. Cole, S. Kirkham Song, Weihua Mincher, Bruce J. Peake, Barrie M. TI Studies in radiation chemistry: Application to ozonation and other advanced oxidation processes SO OZONE-SCIENCE & ENGINEERING LA English DT Article; Proceedings Paper CT World Congress on Ozone and Ultraviolet Technologies CY AUG 27-29, 2007 CL Los Angeles, CA DE ozone; advanced oxidation/reduction processes; hydroxyl radical; destruction mechanisms ID FREE-RADICAL CHEMISTRY; TERT-BUTYL ETHER; ELECTRON-BEAM IRRADIATION; DISINFECTION-BY-PRODUCTS; RATE CONSTANTS; AQUEOUS-SOLUTION; HYDRATED ELECTRON; AQUATIC ENVIRONMENT; PULSE-RADIOLYSIS; GAMMA-RADIOLYSIS AB Advanced oxidation/reduction processes (AORPs) are an alternative water treatment that is becoming more widely utilized. Our radiation-chemistry based studies are being used to develop a fundamental understanding of AOP treatment options, and are divided into three complementary types of contaminants; disinfection by-products (DBPs), emerging pollutants of concern (EPoCs), and natural organic matter (NOM). More than 600 DBPs have been identified, and one class that appears to have severe potential adverse health effects is the halonitromethanes (HNMs). Of the nine HNMs, trichloronitromethane (chloropicrin) is the most common, with levels up to 180 nM in US drinking waters. EPoCs are of interest because of their biological activity at low concentrations in water and while the initial focus was on endocrine disruptor chemicals (EDCs) this class has now been expanded to include many other recalcitrant chemicals such as hormones, antibiotics, industrial contaminants, and health care products. Natural organic matter is one of the most common radical scavengers in natural waters and therefore may adversely affect AOPs. Our approach is to study NOM both directly and using model compounds thought to be representative of structural components of this complex material. C1 [Cooper, William J.; Song, Weihua] Univ Calif Irvine, Dept Civil & Environm Engn, Urban Water Res Ctr, Irvine, CA 92697 USA. [Mezyk, Stephen P.] Calif State Univ Long Beach, Dept Chem & Biochem, Long Beach, CA 90840 USA. [Peller, Julie R.] Indiana Univ NW, Dept Chem, Gary, IN USA. [Cole, S. Kirkham] McKim & Creed, Virginia Beach, VA USA. [Mincher, Bruce J.] US DOE, Idaho Natl Lab, Idaho Falls, ID USA. [Peake, Barrie M.] Univ Otago, Dept Chem, Dunedin, New Zealand. RP Cooper, WJ (reprint author), Univ Calif Irvine, Dept Civil & Environm Engn, Urban Water Res Ctr, Irvine, CA 92697 USA. EM wcooper@uci.edu RI Song, Weihua/B-6931-2011 OI Song, Weihua/0000-0001-7633-7919 NR 32 TC 9 Z9 10 U1 2 U2 27 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 0191-9512 J9 OZONE-SCI ENG JI Ozone-Sci. Eng. PY 2008 VL 30 IS 1 BP 58 EP 64 DI 10.1080/01919510701761112 PG 7 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA 270PB UT WOS:000253731600009 ER PT B AU Guclu, H Kumari, D Yuksel, M AF Guclu, Hasan Kumari, Durgesh Yuksel, Murat BA Wehrle, K BF Wehrle, K BE Kellerer, W Singhal, SK Steinmetz, R TI Ad-hoc Limited Scale-Free Models for Unstructured Peer-to-Peer Networks SO P2P'08: EIGHTH INTERNATIONAL CONFERENCE ON PEER-TO-PEER COMPUTING, PROCEEDINGS LA English DT Proceedings Paper CT 8th International Conference on Peer-to-Peer Computing CY SEP 08-11, 2008 CL Aachen Univ, Aachen, GERMANY SP IEEE Commun Soc, Microsoft, Distributed Syst, RWTH Aachen Univ, Nokia, UMIC, Google, IEEE Comp Soc HO Aachen Univ ID SMALL-WORLD; EVOLUTION; INTERNET; WEB AB Several protocol efficiency metrics (e.g., scalability, search success rate, routing reachability and stability) depend on the capability of preserving structure even over the churn caused by the ad-hoc nodes joining or leaving the network. Preserving the structure becomes more prohibitive due to the distributed and potentially uncooperative nature of such networks, as in the peer-to-peer (P2P) networks. Thus, most practical solutions involve unstructured approaches while attempting to maintain the structure at various levels of protocol stack. The primary focus of this paper is to investigate construction and maintenance of scale-free topologies in a distributed mariner without requiring global topology information at the time when nodes join or leave. We consider the uncooperative behavior of peers by limiting the number of neighbors to a pre-defined hard cutoff value (i.e., no peer is a major hub), and the ad-hoc behavior of peers by rewiring the neighbors of nodes leaving the network. We also investigate the effect of these hard cutoffs and rewiring of ad-hoc nodes on the P2P search efficiency. C1 [Guclu, Hasan] Los Alamos Natl Lab, Ctr Nonlinear Studies, POB 1663, Los Alamos, NM 87545 USA. [Kumari, Durgesh; Yuksel, Murat] Univ Nevada, Comp Sci & Engn Dept, Reno, NV 89557 USA. RP Guclu, H (reprint author), Los Alamos Natl Lab, Ctr Nonlinear Studies, POB 1663, Los Alamos, NM 87545 USA. EM guclu@lanl.gov; durgesh.rani@gmail.com; yuksem@cse.unr.edu FU U.S. Department of Energy [DE-AC52-06NA25396]; National Science Foundation [0627039, 0721542] FX This work was supported by the U.S. Department of Energy under contract DE-AC52-06NA25396 and by the National Science Foundation under awards 0627039 and 0721542. Authors would like to thank Sid Redner for fruitful discussions. NR 40 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 978-0-7695-3318-6 PY 2008 BP 160 EP + DI 10.1109/P2P.2008.16 PG 3 WC Computer Science, Hardware & Architecture; Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BIK09 UT WOS:000260249100021 ER PT B AU Iancu, C Hofmeyr, S AF Iancu, Costin Hofmeyr, Steven GP ACM TI Runtime Optimization of Vector Operations on Large Scale SMP Clusters SO PACT'08: PROCEEDINGS OF THE SEVENTEENTH INTERNATIONAL CONFERENCE ON PARALLEL ARCHITECTURES AND COMPILATION TECHNIQUES LA English DT Proceedings Paper CT 17th International Conference on Parallel Architectures and Compilation Techniques CY OCT 25-29, 2008 CL Toronto, CANADA SP ACM SIGARCH, IEEE CS TCCA, IFIP, IEEE CS TCCP DE Parallel Programming; Program Transformations; Performance Portability; Communication Code Generation; Latency Hiding ID COMPUTATION AB "Vector" style communication operations transfer multiple disjoint memory regions within one logical step. These operations axe widely used in applications, they do improve application performance, and their behavior has been studied and optimized using different implementation techniques across a large variety of systems. In this paper we present a methodology for the selection of the best performing implementation of a vector operation from multiple alternative implementations. Our approach is designed to work for systems with wide SMP nodes where we believe that most published studies fail to correctly predict performance. Due to the emergence of multi-core processors we believe that techniques similar to ours will be incorporated for performance reasons in communication libraries or language runtimes. The methodology relies on the exploration of the application space and a classification of the regions within this space where a particular implementation method performs best. We use micro-bench in arks to measure the performance of an implementation for a given point in the application space and then compose profiles that compare the performance of two given implementations. These profiles capture an empirical upper bound for the performance degradation of a given protocol tinder heavy node load. At runtime, the application selects the implementation according to these performance profiles. Our approach provides performance portability and using our dynamic multi-protocol selection we have been able to improve the performance of a NAS Parallel Benchmarks workload by 22% on an IBM large scale cluster. Very positive results have also been obtained on large scale InfiniBand and Cray XT systems. This work indicates that perhaps the most important factor for application performance on wide SMP systems is the successful management of load on the Network Interface Cards. C1 [Iancu, Costin; Hofmeyr, Steven] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Iancu, C (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. EM cciancu@lbl.gov; shofmeyr@lbl.gov NR 31 TC 0 Z9 0 U1 0 U2 0 PU ASSOC COMPUTING MACHINERY PI NEW YORK PA 1515 BROADWAY, NEW YORK, NY 10036-9998 USA BN 978-1-60558-282-5 PY 2008 BP 122 EP 132 DI 10.1145/1454115.1454134 PG 11 WC Computer Science, Hardware & Architecture; Computer Science, Theory & Methods SC Computer Science GA BJR85 UT WOS:000267053400013 ER PT S AU Yoginath, SB Perumalla, KS AF Yoginath, Srikanth B. Perumalla, Kalyan S. GP IEEE TI Parallel vehicular traffic simulation using reverse computation-based optimistic execution SO PADS 2008: 22ND INTERNATIONAL WORKSHOP ON PRINCIPLES OF ADVANCED AND DISTRIBUTED SIMULATION, PROCEEDINGS SE Workshop on Parallel and Distributed Simulation LA English DT Proceedings Paper CT 22nd International Workshop on Principles of Advanced and Distributed Simulation CY JUN 03-06, 2008 CL Rome, ITALY SP IEEE Comp Soc, TCSIM, ACM SIGSIM, Soc Modeling & Simulat Int AB Vehicular traffic simulations are useful in applications such as emergency management and homeland security planning tools. High speed of traffic simulations translates directly to speed of response and level of resilience in those applications. Here, a parallel traffic simulation approach is presented that is aimed at reducing the time for simulating emergency vehicular traffic scenarios. Three unique aspects of this effort are: (1) exploration of optimistic simulation applied to vehicular traffic simulation (2) addressing reverse computation challenges speck to optimistic vehicular traffic simulation (3) achieving absolute (as opposed to self-relative) speedup with a sequential speed equal to that of a fast, de facto standard sequential simulator for emergency traffic. The design and development of the parallel simulation system is presented, along with a performance study that demonstrates excellent sequential performance as well as parallel performance. C1 [Yoginath, Srikanth B.; Perumalla, Kalyan S.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Yoginath, SB (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. OI Perumalla, Kalyan/0000-0002-7458-0832 NR 9 TC 6 Z9 6 U1 0 U2 2 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 USA SN 1087-4097 BN 978-0-7695-3159-5 J9 W PAR DISTR SIMULAT PY 2008 BP 33 EP 42 DI 10.1109/PADS.2008.14 PG 10 WC Computer Science, Interdisciplinary Applications; Computer Science, Theory & Methods SC Computer Science GA BHZ08 UT WOS:000257570100005 ER PT S AU Perumalla, KS AF Perumalla, Kalyan S. GP IEEE TI Efficient execution on GPUs of field-based vehicular mobility models SO PADS 2008: 22ND INTERNATIONAL WORKSHOP ON PRINCIPLES OF ADVANCED AND DISTRIBUTED SIMULATION, PROCEEDINGS SE Workshop on Principles of Advanced and Distributed Simulation LA English DT Proceedings Paper CT 22nd International Workshop on Principles of Advanced and Distributed Simulation CY JUN 03-06, 2008 CL Rome, ITALY SP IEEE Comp Soc, TCSIM, ACM SIGSIM, Soc Modeling & Simulat Int C1 [Perumalla, Kalyan S.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Perumalla, KS (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. EM perumallaks@ornl.gov OI Perumalla, Kalyan/0000-0002-7458-0832 NR 0 TC 1 Z9 1 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 SN 1087-4097 BN 978-0-7695-3159-5 J9 W PRIN ADV DISTR SIM PY 2008 BP 154 EP 154 DI 10.1109/PADS.2008.36 PG 1 WC Computer Science, Interdisciplinary Applications; Computer Science, Theory & Methods SC Computer Science GA BHZ08 UT WOS:000257570100024 ER PT B AU Hsieh, BC Yee, HKC Lin, H Gladders, MD Gilbank, DG AF Hsieh, B. C. Yee, H. K. C. Lin, H. Gladders, M. D. Gilbank, D. G. BE Kodama, T Yamada, T Aoki, K TI Pair Analysis of Field Galaxies from the RCS SO PANORAMIC VIEWS OF GALAXY FORMATION AND EVOLUTION, PROCEEDINGS SE Astronomical Society of the Pacific Conference Series LA English DT Proceedings Paper CT International Conference on Panoramic Views of Galaxy Formation and Evolution CY DEC 11-16, 2007 CL Hayama, JAPAN SP Natl Astron Observ Japan, Subari Telescope, Fdn Promot Astron Japan, Univ Tokyo ID SEQUENCE CLUSTER SURVEY; EVOLUTION AB We study the evolution of the number of close companions of similar luminosities per galaxy (N-c) by choosing a volume-limited subset of the photometric redshift catalog from the Red-Sequence Cluster Survey (RCS-1). The sample contains over 157,000 objects with a moderate redshift range of 0.25 <= z <= 0.8 and M-Rc <= -20. The N-c value for the whole sample grows with redshift as (1 + z)(m), where m = 2.83 +/- 0.33 in good agreement with N-body simulations in a ACDM cosmology. We also find that the m value becomes smaller for larger separation, and the pair fraction for the fainter luminosity bin has stronger evolution. C1 [Hsieh, B. C.] Acad Sinica, Inst Astron & Astrophys, Taipei 115, Taiwan. [Yee, H. K. C.] Univ Toronto, Dept Astron & Astrophys, Toronto, ON M5S 1A1, Canada. [Lin, H.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. [Gladders, M. D.] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA. [Gilbank, D. G.] Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada. RP Hsieh, BC (reprint author), Acad Sinica, Inst Astron & Astrophys, Taipei 115, Taiwan. EM sieh@asiaa.sinica.edu.tw 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 978-1-58381-668-4 J9 ASTR SOC P PY 2008 VL 399 BP 300 EP + PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BIU97 UT WOS:000262978800079 ER PT S AU Kerbyson, DJ Barker, KJ Davis, K AF Kerbyson, Darren J. Barker, Kevin J. Davis, Kei BE Bischof, C Bucker, C Gibbon, P Joubert, G Lippert, T Mohr, B Peters, F TI Analysis of the Weather Research and Forecasting (WRF) Model on Large-Scale Systems SO PARALLEL COMPUTING: ARCHITECTURES, ALGORITHMS AND APPLICATIONS SE Advances in Parallel Computing LA English DT Proceedings Paper CT International Parallel Computing Conference 2007 CY SEP 04-07, 2007 CL RWTH Aachen Univ, Aachen, FRANCE SP Forsch Zentrum Julich, IBM, Par Tec Cluster Competence Ctr, RWTHAACHEN HO RWTH Aachen Univ AB In this work we analyze the performance of the Weather Research and Forecasting (WRF) model using both empirical data and an accurate analytic performance model. WRF is a large-scale mesoscale numerical weather prediction system designed for both operational forecasting. and atmospheric research. It is in active development at the National Center for Atmospheric Research (NCAR), and call use 1.000 s of processors in parallel. In this work we compare the performance of WRF oil a cluster-based system (AMD Opteron processors interconnected with 4x SDR Infiniband) to that oil a mesh-based system (IBM Blue Gene/L interconnected with a proprietary 3-D torus). In addition, we develop a performance model of WRF that is validated against these two systems and that exhibits high prediction accuracy. The model is then used to examine the performance of a near-term future generation supercomputer. C1 [Kerbyson, Darren J.; Barker, Kevin J.; Davis, Kei] Los Alamos Natl Lab, Performance & Architecture Lab, Los Alamos, NM 87545 USA. RP Kerbyson, DJ (reprint author), Los Alamos Natl Lab, Performance & Architecture Lab, Los Alamos, NM 87545 USA. EM djk@lanl.gov; kjbarker@lanl.gov; kei.davis@lanl.gov NR 10 TC 0 Z9 0 U1 0 U2 1 PU I O S PRESS PI AMSTERDAM PA NIEUWE HEMWEG 6B, 1013 BG AMSTERDAM, NETHERLANDS SN 0927-5452 BN 978-1-58603-796-3 J9 ADV PAR COM PY 2008 VL 15 BP 89 EP 98 PG 10 WC Computer Science, Interdisciplinary Applications; Computer Science, Theory & Methods SC Computer Science GA BMT58 UT WOS:000273549500010 ER PT S AU Tipparaju, V Krishnan, M Palmer, B Petrini, F Nieplocha, J AF Tipparaju, Vinod Krishnan, Manoj Palmer, Bruce Petrini, Fabrizio Nieplocha, Jarek BE Bischof, C Bucker, C Gibbon, P Joubert, G Lippert, T Mohr, B Peters, F TI Towards Fault Resilient Global Arrays SO PARALLEL COMPUTING: ARCHITECTURES, ALGORITHMS AND APPLICATIONS SE Advances in Parallel Computing LA English DT Proceedings Paper CT International Parallel Computing Conference 2007 CY SEP 04-07, 2007 CL RWTH Aachen Univ, Aachen, FRANCE SP Forsch Zentrum Julich, IBM, Par Tec Cluster Competence Ctr, RWTHAACHEN HO RWTH Aachen Univ AB This paper describes extensions to the Global Arrays (GA) toolkit to support user-coordinated fault tolerance through checkpoint/restart operations. GA implements a global address space programming model, is compatible with MPI, and offers bindings to multiple popular serial languages. Our approach uses a spare pool of processors to perform reconfiguration after the fault. process virtualization, incremental or full checkpoint scheme and restart capabilities. Experimental evaluation in an application context shows that the overhead introduced by checkpointing is less than 1% of the total execution time. A recovery from a single fault increased the execution time by 8%. C1 [Tipparaju, Vinod; Krishnan, Manoj; Palmer, Bruce; Petrini, Fabrizio; Nieplocha, Jarek] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Tipparaju, V (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. EM vinod@pnl.gov; manoj@pnl.gov; bruce.palmer@pnl.gov; fabrizio.petrini@pnl.gov; jarek.nieplocha@pnl.gov NR 9 TC 1 Z9 1 U1 0 U2 2 PU I O S PRESS PI AMSTERDAM PA NIEUWE HEMWEG 6B, 1013 BG AMSTERDAM, NETHERLANDS SN 0927-5452 BN 978-1-58603-796-3 J9 ADV PAR COM PY 2008 VL 15 BP 339 EP 345 PG 7 WC Computer Science, Interdisciplinary Applications; Computer Science, Theory & Methods SC Computer Science GA BMT58 UT WOS:000273549500039 ER PT S AU Gropp, WD Frings, W Hermanns, MA Jedlicka, E Jordan, KE Mintzer, F Orth, B AF Gropp, William D. Frings, Wolfgang Hermanns, Marc-Andre Jedlicka, Ed Jordan, Kirk E. Mintzer, Fred Orth, Boris BE Bischof, C Bucker, C Gibbon, P Joubert, G Lippert, T Mohr, B Peters, F TI Scaling Science Applications on Blue Gene SO PARALLEL COMPUTING: ARCHITECTURES, ALGORITHMS AND APPLICATIONS SE Advances in Parallel Computing LA English DT Proceedings Paper CT International Parallel Computing Conference 2007 CY SEP 04-07, 2007 CL RWTH Aachen Univ, Aachen, FRANCE SP Forsch Zentrum Julich, IBM, Par Tec Cluster Competence Ctr, RWTHAACHEN HO RWTH Aachen Univ AB Massively parallel supercomputers like IBM's Blue Gene/L offer exciting new opportunities for scientific discovery by enabling numerical simulations on an unprecedented scale. However. achieving highly scalable performance is often not straightforward as the system's extraordinary level of parallelism and its specialized nodes present challenges to applications in many areas. including: communication efficiency. memory usage, and I/O. This mini-symposium aimed to highlight some of the remarkable scaling and performance results achieved, and bring together users and system experts to discuss possible solutions to yet unresolved issues. It featured speakers whose applications have run at large scale on the 8K node system at John von Neumann Institute for Computing at Forschungszentrum Julich and the 20K node system at IBM's Watson Research Center. The talks provided a sampling of the different applications and algorithms that have successfully run on Blue Gene. The speakers discussed best practices, particularly with respect to scaling to tens of thousands of processes, and challenges faced in using BlueGene/L to massive scale. and they showcased some of the breakthrough science that has already been achieved. C1 [Gropp, William D.; Jedlicka, Ed] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. RP Gropp, WD (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. EM gropp@mcs.anl.gov; w.frings@fz-juelich.de; m.a.hermanns@fz-juelich.de; jedlicka@mcs.anl.gov; kjordan@us.ibm.com; mintzer@us.ibm.com; b.orth@fz-juelich.de OI Gropp, William/0000-0003-2905-3029; Hermanns, Marc-Andre/0000-0003-3895-7791 NR 0 TC 1 Z9 1 U1 0 U2 1 PU I O S PRESS PI AMSTERDAM PA NIEUWE HEMWEG 6B, 1013 BG AMSTERDAM, NETHERLANDS SN 0927-5452 BN 978-1-58603-796-3 J9 ADV PAR COM PY 2008 VL 15 BP 583 EP 584 PG 2 WC Computer Science, Interdisciplinary Applications; Computer Science, Theory & Methods SC Computer Science GA BMT58 UT WOS:000273549500068 ER PT S AU Lee, GL Ahn, DH Arnold, DC de Supinski, BR Miller, BP Schulz, M AF Lee, Gregory L. Ahn, Dong H. Arnold, Dorian C. de Supinski, Bronis R. Miller, Barton P. Schulz, Martin BE Bischof, C Bucker, C Gibbon, P Joubert, G Lippert, T Mohr, B Peters, F TI Benchmarking the Stack Trace Analysis Tool for BlueGene/L SO PARALLEL COMPUTING: ARCHITECTURES, ALGORITHMS AND APPLICATIONS SE Advances in Parallel Computing LA English DT Proceedings Paper CT International Parallel Computing Conference 2007 CY SEP 04-07, 2007 CL RWTH Aachen Univ, Aachen, FRANCE SP Forsch Zentrum Julich, IBM, Par Tec Cluster Competence Ctr, RWTHAACHEN HO RWTH Aachen Univ AB We present STATBench, on emulator of a scalable, lightweight, and effective tool to help debug extreme-scale parallel applications, the Stock Trace Analysis Tool (STAT). STAT periodically stack traces from application processes and organizes the samples into a call graph prefix tree that depicts process equivalence classes based on trace similarities. Me have developed STATBench which only requires limited resources and yet allows us to evaluate the feasibility of and identify potential roadblocks to deploying STAT on entire large scale systems like the 131,072 processor BlueGene/L (BG/L) at Lawrence Livermore National Laboratory. In this paper we describe the implementation of STATBench and show how our design strategy is generally useful for emulating tool scaling behaviour Vile validate STATBench's emulation of STAT by comparing execution results from STATBench with previously collected data from STAT on the same platform. We then use STATBench to emulate STAT on configurations up to the full BG/L system size - at this scale, STATBench predicts latencies below three seconds. C1 [Lee, Gregory L.; Ahn, Dong H.; de Supinski, Bronis R.; Schulz, Martin] Lawrence Livermore Natl Lab, Computat Directorate, Livermore, CA 94550 USA. RP Lee, GL (reprint author), Lawrence Livermore Natl Lab, Computat Directorate, Livermore, CA 94550 USA. EM lee218@llnl.gov; ahn1@llnl.gov; darnold@cs.wisc.edu; bronis@llnl.gov; bart@cs.wisc.edu; schulzm@llnl.gov NR 4 TC 0 Z9 0 U1 0 U2 4 PU I O S PRESS PI AMSTERDAM PA NIEUWE HEMWEG 6B, 1013 BG AMSTERDAM, NETHERLANDS SN 0927-5452 BN 978-1-58603-796-3 J9 ADV PAR COM PY 2008 VL 15 BP 621 EP 628 PG 8 WC Computer Science, Interdisciplinary Applications; Computer Science, Theory & Methods SC Computer Science GA BMT58 UT WOS:000273549500074 ER PT S AU Koniges, AE Gunney, BTN Anderson, RW Fisher, AC Masters, ND AF Koniges, Alice. E. Gunney, Brian T. N. Anderson, Robert W. Fisher, Aaron C. Masters, Nathan D. BE Bischof, C Bucker, C Gibbon, P Joubert, G Lippert, T Mohr, B Peters, F TI Development Strategies for Modern Predictive Simulation Codes SO PARALLEL COMPUTING: ARCHITECTURES, ALGORITHMS AND APPLICATIONS SE Advances in Parallel Computing LA English DT Proceedings Paper CT International Parallel Computing Conference 2007 CY SEP 04-07, 2007 CL RWTH Aachen Univ, Aachen, FRANCE SP Forsch Zentrum Julich, IBM, Par Tec Cluster Competence Ctr, RWTHAACHEN HO RWTH Aachen Univ ID ADAPTIVE MESH REFINEMENT AB Modern simulation codes often use a combination of languages and libraries for a variety of reasons including reducing time to solution, automatic parallelism when possible. portability, and modularity. We describe the process of designing a new multiscale simulation code, which takes advantage of these principles. One application of our code is high-powered laser systems. where hundreds of laser beams are concentrated on centimeter-sized targets to enable the demonstration of controlled fusion and exciting new experiments in astrophysics and high-energy-density science. Each target must be carefully analyzed so that debris and shrapnel from the tat-get will be acceptable to optics and diagnostics, creating new simulation regimes. These simulations rely on a predictive capability for determining the debris and shrapnel effects. Our new three-dimensional parallel code uses adaptive mesh refinement (AMR) combined with more standard methods based on Arbitrary Lagrangian Eulerian (ALE) hydrodynamics to perform advanced modelling of each different target design. The AMR method provides a true multiscale simulation that allows for different physical models oil different scales. We discuss our code development strategies. The code is built oil top of the SAMRAI library (structured adaptive mesh refinement application interface) that provides scalable automatic parallelism. During the development phase of this code we have instituted testing procedures, code writing styles, and team coordination applicable to a rapidly changing source code, several dependent libraries, and a relatively small team including university collaborators with their own source and platforms. We use modern coding techniques and open source tools when possible for code management and testing including CppUnit, Subversion (and previously GNU ARCH), TiddlyWiki and group chat rooms. Additionally. we are conducting experiments aimed at providing a data set for validation of the fragmentation models. C1 [Koniges, Alice. E.; Gunney, Brian T. N.; Anderson, Robert W.; Fisher, Aaron C.; Masters, Nathan D.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Koniges, AE (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. EM koniges@llnl.gov NR 9 TC 1 Z9 1 U1 0 U2 2 PU I O S PRESS PI AMSTERDAM PA NIEUWE HEMWEG 6B, 1013 BG AMSTERDAM, NETHERLANDS SN 0927-5452 BN 978-1-58603-796-3 J9 ADV PAR COM PY 2008 VL 15 BP 697 EP 704 PG 8 WC Computer Science, Interdisciplinary Applications; Computer Science, Theory & Methods SC Computer Science GA BMT58 UT WOS:000273549500084 ER PT S AU Abu-Khzam, FN Rizk, MA Abdallah, DA Samatova, NF AF Abu-Khzam, Faisal N. Rizk, Mohamad A. Abdallah, Deema A. Samatova, Nagiza F. BE Wyrzykowski, R Dongarra, J Karczewski, K Wasniewski, J TI The buffered work-pool approach for search-tree based optimization algorithms SO PARALLEL PROCESSING AND APPLIED MATHEMATICS SE Lecture Notes in Computer Science LA English DT Proceedings Paper CT 7th International Conference on Parallel Processing and Applied Mathematics CY SEP 09-12, 2007 CL Gdansk, POLAND SP intel, Microsoft, IBM, Action SA, SIAM AB Recent advances in algorithm design have shown a growing interest in seeking exact solutions to many hard problems. This new trend has been motivated by hardness of approximation results that appeared in the last decade, and has taken a great boost by the emergence of parameterized complexity theory. Exact algorithms often follow the classical search-tree based recursive backtracking strategy. Different algorithms adopt different branching and pruning techniques in order to reduce the unavoidable exponential growth in run time. This paper is concerned with another time-saving approach by developing new methods for exploiting high-performance computational platforms. A load balancing strategy is presented that could exploit multi-core architectures, such as clusters of symmetric multiprocessors. The well-known Maximum Clique problem is used as an exemplar to illustrate the utility of our approach. C1 [Abu-Khzam, Faisal N.; Rizk, Mohamad A.; Abdallah, Deema A.] Lebanese Amer Univ, Div Comp Sci & Math, Beirut, Lebanon. [Samatova, Nagiza F.] Oak Ridge Natl Lab, Comp Sci & Mat Div, Oak Ridge, TN 37831 USA. [Samatova, Nagiza F.] N Carolina State Univ, Dept Comp Sci, Raleigh, NC 27695 USA. RP Abu-Khzam, FN (reprint author), Lebanese Amer Univ, Div Comp Sci & Math, Beirut, Lebanon. EM faisal.abukhzam@lau.edu.lb FU U.S. Department of Energy; Laboratory Directed Research and Development; Oak Ridge National Laboratory; UT-Battelle; LLC U.S. [DE-AC05-00OR22725] FX This research has been supported by the Exploratory Data Intensive Computing for Complex Biological Systems project from U.S. Department of Energy (Office of Advanced Scientific Computing Research, Office of Science). The work of N. F. Samatova was also sponsored by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory. Oak Ridge National Laboratory is managed by UT-Battelle for the LLC U.S. D.O.E. under contract no. DE-AC05- 00OR22725. NR 11 TC 3 Z9 3 U1 0 U2 2 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 978-3-540-68105-2 J9 LECT NOTES COMPUT SC PY 2008 VL 4967 BP 170 EP + PG 3 WC Computer Science, Software Engineering; Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA BHV14 UT WOS:000256665600019 ER PT S AU Buttari, A Langou, J Kurzak, J Dongarra, J AF Buttari, Alfredo Langou, Julien Kurzak, Jakub Dongarra, Jack BE Wyrzykowski, R Dongarra, J Karczewski, K Wasniewski, J TI Parallel tiled QR factorization for multicore architectures SO PARALLEL PROCESSING AND APPLIED MATHEMATICS SE Lecture Notes in Computer Science LA English DT Proceedings Paper CT 7th International Conference on Parallel Processing and Applied Mathematics CY SEP 09-12, 2007 CL Gdansk, POLAND SP intel, Microsoft, IBM, Action SA, SIAM ID PERFORMANCE; ALGORITHMS; EQUATIONS; SOFTWARE; LIBRARY; STORAGE; MATRIX AB As multicore systems continue to gain ground in the High Performance Computing world, linear algebra algorithms have to be reformulated or new algorithms have to be developed in order to take advantage of the architectural features on these new processors. Fine grain parallelism becomes a major requirement and introduces the necessity of loose synchronization in the parallel execution of an operation. This paper presents an algorithm for the QR factorization where the operations can be represented as a sequence of small tasks that operate on square blocks of data. These tasks can be dynamically scheduled for execution based on the dependencies among them and on the availability of computational resources. Compared to the standard approach, say with LAPACK, may result in an out of order execution of the tasks which will completely hide the presence of intrinsically sequential tasks in the factorization. Performance comparisons are presented with the LAPACK algorithm for QR factorization where parallelism can only be exploited at the level of the BLAS operations. C1 [Buttari, Alfredo; Kurzak, Jakub; Dongarra, Jack] Univ Tennessee, Dept Comp Sci, Knoxville, TN 37996 USA. [Buttari, Alfredo; Kurzak, Jakub; Dongarra, Jack] Univ Tennessee, Dept Elect Engn, Knoxville, TN 37996 USA. [Langou, Julien] Univ Colorado, Dept Mech Sci, Denver, CO 80309 USA. [Langou, Julien] Univ Colorado, Health Sci Ctr, Denver, CO 80309 USA. [Dongarra, Jack] Oak Ridge Natl Lab, Comp Sci & Mech Div, Oak Ridge, TN USA. [Dongarra, Jack] Univ Manchester, Manchester M13 9PL, Lancs, England. RP Buttari, A (reprint author), Univ Tennessee, Dept Comp Sci, Knoxville, TN 37996 USA. NR 24 TC 4 Z9 4 U1 0 U2 1 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 978-3-540-68105-2 J9 LECT NOTES COMPUT SC PY 2008 VL 4967 BP 639 EP + PG 3 WC Computer Science, Software Engineering; Computer Science, Theory & Methods; Mathematics, Applied SC Computer Science; Mathematics GA BHV14 UT WOS:000256665600067 ER PT B AU Barhen, J Humble, T Traweek, M AF Barhen, Jacob Humble, Travis Traweek, Michael GP IEEE TI FFT-Based Sonar Array Beamforming Without Corner Tuming SO PASSIVE '08: 2008 NEW TRENDS FOR ENVIRONMENTAL MONITORING USING PASSIVE SYSTEMS LA English DT Proceedings Paper CT IEEE Workshop and Exhibition on New Trends for Environmental Monitoring using Passive Systems (PASSIVE'08) CY OCT 14-17, 2008 CL Hyeres, FRANCE SP IEEE Ocean Engn Soc AB The concept of "corner turning" has been, for many decades, at the heart of array beamforming via Fourier transforms, As widely reported in the open literature (both for sonars and radars), corner turning operations in the computational sequence "temporal Fourier transforms -> data cube corner turning -> spatial Fourier transforms)), constitute a major obstacle to achieve high-performance and lower power dissipation (by reducing the number memory accesses). To date, leading industry providers still include explicit corner turning stages in their computational flow architectures for multidimensional array processing. The emergence of ultra-low power multicore processors opens unprecedented opportunities for implementing sophisticated signal processing algorithms faster and within a much lower energy budget. In that context, the primary innovation reported in this paper addresses the development of a computational scheme that avoids altogether the corner fuming stage. We discuss its implementation on an IBM Cell multicore processor (Sony PS3) and provide preliminary timing results. C1 [Barhen, Jacob; Humble, Travis] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Traweek, Michael] Off Naval Res, Arlington, VA 22217 USA. RP Barhen, J (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. EM barhenj@ornl.gov FU United States Office of Naval Research; Naval Sea Systems Command; LLC [DE-AC05-00OR22725.] FX This work was supported by the United States Office of Naval Research and by the Naval Sea Systems Command. Oak Ridge National Laboratory is managed for the US Department of Energy by UT-Battelle, LLC under contract DE-AC05-00OR22725. NR 10 TC 0 Z9 0 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-2815-1 PY 2008 BP 45 EP + PG 2 WC Acoustics; Computer Science, Artificial Intelligence; Computer Science, Information Systems; Engineering, Electrical & Electronic SC Acoustics; Computer Science; Engineering GA BKL66 UT WOS:000268443800008 ER PT S AU Bunch, KJ McMakin, DL Sheen, DM AF Bunch, Kyle J. McMakin, Douglas L. Sheen, David M. BE Appleby, R Wikner, DA TI Wideband fractal antennas for holographic imaging and rectenna applications SO PASSIVE MILLIMETER-WAVE IMAGING TECHNOLOGY XI SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Passive Millimeter-Wave Imaging Technology XI CY MAR 18-19, 2008 CL Orlando, FL SP SPIE DE fractal antennas; holographic imaging; millimeter waves; rectenna; harmonic radar; wideband antennas ID HARMONIC RADAR; WIRE ANTENNAS; ARRAYS; DESIGN; MONOPOLE AB At Pacific Northwest National Laboratory, wideband antenna arrays have been successfully used to reconstruct three-dimensional images at microwave and millimeter-wave frequencies. Applications of this technology have included portal monitoring, through-wall imaging, and weapons detection. Fractal antennas have been shown to have wideband characteristics due to their self-similar nature (that is, their geometry is replicated at different scales). They further have advantages in providing good characteristics in a compact configuration. We discuss the application of fractal antennas for holographic imaging. Simulation results will be presented. Rectennas are a specific class of antennas in which a received signal drives a nonlinear junction and is retransmitted at either a harmonic frequency or a demodulated frequency. Applications include tagging and tracking objects with a uniquely-responding antenna. It is of interest to consider fractal rectenna because the self-similarity of fractal antennas tends to make them have similar resonance behavior at multiples of the primary resonance. Thus, fractal antennas can be suited for applications in which a signal is reradiated at a harmonic frequency. Simulations will be discussed with this application in mind. C1 [Bunch, Kyle J.; McMakin, Douglas L.; Sheen, David M.] Pacific NW Natl Lab, US Dept Energy, Battelle Mem Inst, Richland, WA 99354 USA. RP Bunch, KJ (reprint author), Pacific NW Natl Lab, US Dept Energy, Battelle Mem Inst, POB 999, Richland, WA 99354 USA. EM kyle.bunch@pnl.gov NR 18 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 978-0-8194-7139-0 J9 PROC SPIE PY 2008 VL 6948 AR 69480B DI 10.1117/12.778265 PG 5 WC Optics; Imaging Science & Photographic Technology SC Optics; Imaging Science & Photographic Technology GA BHX74 UT WOS:000257283600009 ER PT S AU Sheen, DM McMakin, DL Barber, J Hall, TE Severtsen, RH AF Sheen, David M. McMakin, Douglas L. Barber, Jeffrey Hall, Thomas E. Severtsen, Ronald H. BE Appleby, R Wikner, DA TI Active imaging at 350 GHz for security applications SO PASSIVE MILLIMETER-WAVE IMAGING TECHNOLOGY XI SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Passive Millimeter-Wave Imaging Technology XI CY MAR 18-19, 2008 CL Orlando, FL SP SPIE DE millimeter waves; terahertz; imaging; holography; personnel surveillance; screening ID CONCEALED WEAPON DETECTION; MILLIMETER-WAVE; WIDE-BAND AB Imaging in the sub-millimeter wave range of 300-1000 GHz is useful for a variety of applications including security screening, imaging through obscurations, and non-destructive evaluation. Waves in this frequency range have wavelengths ranging from 0.3 to 1.0 mm and are able to penetrate many optical obscurants. The ability to form high-resolution images that penetrate clothing makes imaging in this frequency range particularly interesting for personnel security screening at standoff distances. The Pacific Northwest National Laboratory (PNNL) has previously developed portal screening systems that operate at the lower end of the millimeter-wave frequency range around 30 GHz. These systems are well suited for screening within portals and can achieve resolution of about 5 mm at ranges of less than I meter. However, increasing the range of these systems would dramatically reduce the resolution due to diffraction at their relatively long wavelength. Operation at much higher frequencies, for example 350 GHz, will enable an order of magnitude improvement of the resolution at a given range, while still achieving adequate clothing penetration. PNNL's portal imaging systems have relied on wavefront reconstruction, or holographic, imaging techniques to mathematically focus the imagery. In the sub-millimeter-wave, this may not always be practical due to sensitivity of the system to slight changes in the position of the imaging target during data collection. In this case, physical focusing using lenses or reflectors may be more practical. In this paper, we examine the effectiveness of imaging near 350 GHz for security screening applications. Imaging results are presented using the holographic wavefront reconstruction technique, as well as a focused reflector-based imaging system. C1 [Sheen, David M.; McMakin, Douglas L.; Hall, Thomas E.; Severtsen, Ronald H.] Pacific NW Natl Lab, Pacific NW Div, US Dept Energy, Richland, WA 99352 USA. RP Sheen, DM (reprint author), Pacific NW Natl Lab, Pacific NW Div, US Dept Energy, POB 999, Richland, WA 99352 USA. EM david.sheen@pnl.gov NR 12 TC 3 Z9 4 U1 3 U2 8 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-7139-0 J9 PROC SPIE PY 2008 VL 6948 AR 69480M DI 10.1117/12.778011 PG 10 WC Optics; Imaging Science & Photographic Technology SC Optics; Imaging Science & Photographic Technology GA BHX74 UT WOS:000257283600016 ER PT B AU Nesvadba, NPH Lehnert, MD De Breuck, C Gilbert, A van Breuge, W AF Nesvadba, Nicole P. H. Lehnert, M. D. De Breuck, C. Gilbert, A. van Breuge, W. BE Knapen, JH Mahoney, TJ Vazdekis, A TI High redshift radio galaxies: AGN feedback in extreme starbursts SO PATHWAYS THROUGH AN ECLECTIC UNIVERSE SE Astronomical Society of the Pacific Conference Series LA English DT Proceedings Paper CT Conference on Pathways Through an Eclectic Universe CY APR 23-27, 2007 CL Santiago del Teide, SPAIN ID EARLY UNIVERSE AB We present the initial results of an ongoing study to identify the fingerprints of powerful AGN feedback during the formation epoch of massive galaxies at high redshift by tracing the dynamics of their optical emission line gas through integral field spectroscopy. In a small sample of radio galaxies at z = 2-3.5, we find energetic outflows of similar to 10(9-10) M-circle dot of ionized gas being driven out with velocities of up to 1000 km s(-1). Geometry, timescale, and energy arguments indicate the outflows are related to the AGN and are probably driven through the mechanical energy of the radio jet. With kinetic energies of >= 10(60) erg, sufficient to unbind significant gas masses, these outflows will potentially escape even the most massive halos. C1 [Nesvadba, Nicole P. H.; Lehnert, M. D.] Univ Paris 07, CNRS, Observ Paris, GEPI, 5 Pl Jules Janssen, F-92190 Meudon, France. [Nesvadba, Nicole P. H.] Marie Curie Fellow, Rome, Italy. [De Breuck, C.] European So Observ, Munich, Germany. [Gilbert, A.; van Breuge, W.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Nesvadba, NPH (reprint author), Univ Paris 07, CNRS, Observ Paris, GEPI, 5 Pl Jules Janssen, F-92190 Meudon, France. NR 6 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 978-1-58381-650-9 J9 ASTR SOC P PY 2008 VL 390 BP 396 EP + PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BIA28 UT WOS:000257885300092 ER PT B AU Lofstead, J Zheng, F Klasky, S Schwan, K AF Lofstead, Jay Zheng, Fang Klasky, Scott Schwan, Karsten GP IEEE TI Input/Output APIs and Data Organization for High Performance Scientific Computing SO PDSW'08: PROCEEDINGS OF THE 2008 3RD PETASCALE DATA STORAGE WORKSHOP LA English DT Proceedings Paper CT 3rd Petascale Data Storage Workshop 2008 CY NOV 17, 2008 CL Austin, TX SP SCO8, IEEE, Pdsi AB Scientific Data Management has become essential to the productivity of scientists using ever larger machines and running applications that produce ever more data. There are several specific issues when running on petascale (and beyond) machines. One is the need for massively parallel data output, which in part, depends on the data formats and semantics being used. Here, the inhibition of parallelism by file system notions of strict and immediate consistency can be addressed with 'delayed data consistency' methods. Such methods can also be used to remove the runtime coordination steps required for immediate consistency from machine resources like Bluegene's separate networks for barrier calls and its dedicated IO nodes, thereby freeing them to instead, perform alternate tasks that enhance data output performance and/or richness. Second, once data is generated, it is important to be able to efficiently access it, which implies the need for rapid data characterization and indexing. This can be achieved by adding small amounts of metadata to the output process, thereby permitting scientists to quickly make informed decisions about which files to process from large-scale science runs. Third, failure probabilities increase with an increasing number of nodes, which suggests the need for organizing output data to be resilient to failures in which the output from a single or from a small number of nodes is lost or corrupted. This paper demonstrates the utility of using delayed consistency methods for the process of data output from the compute nodes of petascale machines. It also demonstrates the advantages derived from resilient data organization coupled with lightweight methods for data indexing. An implementation of these techniques is realized in ADIOS, the Adaptable IO System, and its BP intermediate file format. The implementation is designed to be compatible with existing, well-known file formats like HDF-5 and NetCDF, thereby permitting end users to exploit the rich tool chains for these formats. Initial performance evaluations of the approach exhibit substantial performance advantages over using native parallel HDF-5 in the Chimera supernova code. C1 [Lofstead, Jay; Zheng, Fang; Schwan, Karsten] Georgia Inst Technol, Coll Comp, Atlanta, GA 30332 USA. [Klasky, Scott] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Lofstead, J (reprint author), Georgia Inst Technol, Coll Comp, Atlanta, GA 30332 USA. EM lofstead@cc.gatech.edu; fzheng8@mail.gatech.edu; klasky@ornl.gov; schwan@cc.gatech.edu NR 13 TC 2 Z9 2 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-4208-9 PY 2008 BP 1 EP + PG 3 WC Computer Science, Information Systems SC Computer Science GA BPK89 UT WOS:000279103000001 ER PT B AU Yu, WK Rao, NSV Wyckoff, P Vetter, JS AF Yu, Weikuan Rao, Nageswara S. V. Wyckoff, Pete Vetter, Jeffrey S. GP IEEE TI Performance of RDMA-capable Storage Protocols on Wide-Area Network SO PDSW'08: PROCEEDINGS OF THE 2008 3RD PETASCALE DATA STORAGE WORKSHOP LA English DT Proceedings Paper CT 3rd Petascale Data Storage Workshop 2008 CY NOV 17, 2008 CL Austin, TX SP SCO8, IEEE, Pdsi DE NFS; iSCSI; RDMA; InfiniBand; 10GigE AB Because of its high throughput, low CPU utilization, and direct data placement, RDMA (Remote Direct Memory Access) has been adopted for transport in a number of storage protocols, such as NFS and iSCSI. In this presentation, we provide a performance evaluation of RDMA-based NFS and iSCSI on Wide-Area Network (WAN). We show that these protocols, though benefit from RDMA on Local Area Network (LAN) and on WAN of short distance, are faced with a number of challenges to achieve good performance on long distance WAN. This is because of (a) the low performance of RDMA reads on WAN, (b) the small 4KB chunks used in NFS over RDMA, and(c)the lack of RDMA capability in handling discontinuous data. Our experimental results document the performance behavior of these RDMA-based storage protocols on WAN. C1 [Yu, Weikuan; Rao, Nageswara S. V.; Vetter, Jeffrey S.] Oak Ridge Natl Lab, Comp Sci & MAth, Oak Ridge, TN 37831 USA. [Wyckoff, Pete] Ohio Supercomp Ctr, Columbus, OH 43212 USA. RP Yu, WK (reprint author), Oak Ridge Natl Lab, Comp Sci & MAth, Oak Ridge, TN 37831 USA. EM wyu@ornl.gov; raons@ornl.gov; pw@osc.edu; vetter@ornl.gov FU Office of Advanced Scientific Computing Research; U.S. Department of Energy; UT-Battelle, LLC [DE-AC05-000R22725] FX This research is sponsored by the Office of Advanced Scientific Computing Research; U.S. Department of Energy. The work was performed at the Oak Ridge National Laboratory, which is managed by UT-Battelle, LLC under Contract No. DE-AC05-000R22725. NR 15 TC 0 Z9 0 U1 0 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-4208-9 PY 2008 BP 23 EP + PG 3 WC Computer Science, Information Systems SC Computer Science GA BPK89 UT WOS:000279103000005 ER PT B AU Curry, ML Skjellum, A Ward, HL Brightwell, R AF Curry, Matthew L. Skjellum, Anthony Ward, H. Lee Brightwell, Ron GP IEEE TI Arbitrary Dimension Reed-Solomon Coding and Decoding for Extended RAID on GPUs SO PDSW'08: PROCEEDINGS OF THE 2008 3RD PETASCALE DATA STORAGE WORKSHOP LA English DT Proceedings Paper CT 3rd Petascale Data Storage Workshop 2008 CY NOV 17, 2008 CL Austin, TX SP SCO8, IEEE, Pdsi AB Reed-Solomon coding is a method of generating arbitrary amounts of checksum information from original data via matrix-vector multiplication in finite fields. Previous work has shown that CPUs are not well-matched to this type of computation, but recent graphical processing units (CPUs) have been shown through a case study to perform this encoding quickly for the 3 + 3 (three data + three parity) case. In order to be utilized in a true RAID-like system, it is important to understand how well this computation can scale in the number of data disks supported. This paper details the performance of a general Reed-Solomon encoding and decoding library that is suitable for use in RAID-like systems. Both generation and recovery are performance-tested and discussed. C1 [Curry, Matthew L.; Skjellum, Anthony] Univ Alabama Birmingham, Dept Comp & Informat Sci, 1300 Univ Blvd,Rm 115A, Birmingham, AL 35294 USA. [Ward, H. Lee; Brightwell, Ron] Comp Sci Res Inst, Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Curry, ML (reprint author), Univ Alabama Birmingham, Dept Comp & Informat Sci, 1300 Univ Blvd,Rm 115A, Birmingham, AL 35294 USA. EM curryml@cis.uab.edu; tony@cis.uab.edu; lee@sandia.gov; rbbrigh@sandia.gov FU Department of Energy [DE-FC02-06ER25767] FX This material is based upon work supported by the Department of Energy under Award Number DE-FC02-06ER25767. NR 8 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-4208-9 PY 2008 BP 35 EP + PG 2 WC Computer Science, Information Systems SC Computer Science GA BPK89 UT WOS:000279103000007 ER PT B AU May, J AF May, John GP IEEE TI Pianola: A script-based I/O benchmark SO PDSW'08: PROCEEDINGS OF THE 2008 3RD PETASCALE DATA STORAGE WORKSHOP LA English DT Proceedings Paper CT 3rd Petascale Data Storage Workshop 2008 CY NOV 17, 2008 CL Austin, TX SP SCO8, IEEE, Pdsi AB Script-based I/O benchmarks record the I/O behavior of applications by using an instrumentation library to trace I/O events and their timing. A replay engine can then reproduce these events from the script in the absence of the original application. This type of benchmark reproduces real-world I/O workloads without the need to distribute, build, or run complex applications. However, faithfully recreating the I/O behavior of the original application requires careful design in both the instrumentation library and the replay engine. This paper presents the Piano la script-based benchmarking system, which includes an accurate and unobtrusive instrumentation system and a simple-to-use replay engine, along with some additional utility programs to manage the creation and replay of scripts. We show that for some sample applications, Pianola reproduces the qualitative features of the I/O behavior. Moreover, the overall replay time and the cumulative read and write times are usually within 10% of the values measured for the original applications. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP May, J (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. EM johnmay@llnl.gov NR 4 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-4208-9 PY 2008 BP 38 EP 43 PG 6 WC Computer Science, Information Systems SC Computer Science GA BPK89 UT WOS:000279103000008 ER PT B AU Mackey, G Sehrish, S Bent, J Lopez, J Habib, S Wang, J AF Mackey, Grant Sehrish, Saba Bent, John Lopez, Julio Habib, Salman Wang, Jun GP IEEE TI Introducing Map-Reduce to High End Computing SO PDSW'08: PROCEEDINGS OF THE 2008 3RD PETASCALE DATA STORAGE WORKSHOP LA English DT Proceedings Paper CT 3rd Petascale Data Storage Workshop 2008 CY NOV 17, 2008 CL Austin, TX SP SCO8, IEEE, Pdsi AB In this work we present an scientific application that has been given a Hadoop MapReduce implementation. We also discuss other scientific fields of supercomputing that could benefit from a MapReduce implementation. We recognize in this work that Hadoop has potential benefit for more applications than simply data mining, but that it is not a panacea for all data intensive applications. We provide an example of how the halo finding application, when applied to large astrophysics datasets, benefits from the model of the Hadoop architecture. The halo finding application uses a friends of friends algorithm to quickly cluster together large sets of particles to output files which a visualization software can interpret. The current implementation requires that large datasets be moved from storage to computation resources for every simulation of astronomy data. Our Hadoop implementation allows for an in-place halo finding application on the datasets, which removes the time consuming process of transferring data between resources. C1 [Mackey, Grant; Lopez, Julio] Univ Cent Florida, Orlando, FL 32816 USA. [Sehrish, Saba; Habib, Salman] Los Alamos Natl Lab, Los Alamos, NM 87544 USA. [Bent, John; Wang, Jun] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. RP Mackey, G (reprint author), Univ Cent Florida, Orlando, FL 32816 USA. EM gmackey@cs.ucf.edu; ssehrish@cs.ucf.edu; johnbent@lanl.gov; jclopez@andrew.cmu.edu; habib@lanl.gov; jwang@cs.ucfedu FU US National Science Foundation [CNS-0646910, CNS0646911, CCF-0621526, CCF-0811413]; US Department of Energy Early Career Principal Investigator Award [DE-FG02-07ER25747] FX This work is supported in part by the US National Science Foundation under grants CNS-0646910, CNS0646911, CCF-0621526, CCF-0811413, and the US Department of Energy Early Career Principal Investigator Award DE-FG02-07ER25747. NR 17 TC 0 Z9 0 U1 0 U2 4 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-4208-9 PY 2008 BP 44 EP + PG 2 WC Computer Science, Information Systems SC Computer Science GA BPK89 UT WOS:000279103000009 ER PT B AU Monti, HM Butt, AR Vazhkudai, SS AF Monti, Henry M. Butt, Ali R. Vazhkudai, Sudharshan S. GP IEEE TI Just-in-time Staging of Large Input Data for Supercomputing Jobs SO PDSW'08: PROCEEDINGS OF THE 2008 3RD PETASCALE DATA STORAGE WORKSHOP LA English DT Proceedings Paper CT 3rd Petascale Data Storage Workshop 2008 CY NOV 17, 2008 CL Austin, TX SP SCO8, IEEE, Pdsi AB High performance computing is facing a data deluge from state-of-the-art colliders and observatories. Large data-sets from these facilities, and other end-user sites, are often inputs to intensive analyses on modern supercomputers. Timely staging in of input data at the supercomputer's local storage can not only optimize space usage, but also protect against delays due to storage system failures. To this end, we propose a just-in-time staging framework that uses a combination of batch-queue predictions, user-specified intermediate nodes, and decentralized data delivery to coincide input data staging with job startup. Our preliminary prototype has been integrated with widely used tools such as the PBS job submission system, Bit Torrent data delivery, and Network Weather Service network monitoring facility. C1 [Monti, Henry M.; Butt, Ali R.] Virginia Tech, Blacksburg, VA 24061 USA. [Vazhkudai, Sudharshan S.] Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA. RP Monti, HM (reprint author), Virginia Tech, Blacksburg, VA 24061 USA. EM hmonti@cs.vt.edu; butta@cs.vt.edu; vazhkudaiss@ornl.gov FU Laboratory Directed Research and Development Program of Oak Ridge National Laboratory (ORNL); U.S. Department of Energy [DE-AC05-00OR22725]; U.S. National Science Foundation Faculty Early Career Development (CAREER) Program [CCF-0746832] FX This research is sponsored in part by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory (ORNL), managed by UT-Battelle, LLC for the U.S. Department of Energy under Contract No. DE-AC05-00OR22725, and by the U.S. National Science Foundation Faculty Early Career Development (CAREER) Program CCF-0746832. NR 14 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-4208-9 PY 2008 BP 58 EP + PG 2 WC Computer Science, Information Systems SC Computer Science GA BPK89 UT WOS:000279103000011 ER PT S AU Przewoznik, J Tyliszczak, T Rybicki, D Zukrowski, J Szczerba, W Sikora, M Kapusta, C Stepankova, H Pacheco, RF Serrate, D Ibarra, MR AF Przewoznik, J. Tyliszczak, T. Rybicki, D. Zukrowski, J. Szczerba, W. Sikora, M. Kapusta, Cz. Stepankova, H. Pacheco, R. F. Serrate, D. Ibarra, M. R. BE Lojkowski, W Blizzard, JR TI Structural, magnetic and electronic properties of surface oxidised Fe nanoparticles SO PERSPECTIVES OF NANOSCIENCE AND NANOTECHNOLOGY: ACTA MATERIALIA GOLD MEDAL WORKSHOP SE Solid State Phenomena LA English DT Proceedings Paper CT Fall Meeting of the European-Materials-Research-Society CY SEP 17-21, 2007 CL Warsaw Univ Technol, Warsaw, POLAND SP European Mat Res Soc HO Warsaw Univ Technol DE surface oxidised Fe powders; ball milling; structural properties; magnetic and electronic properties AB A combined XRD, Mossbauer, SEM, STXM and NMR study of naturally oxidised, ball milled iron powders is presented. The XRD patterns show the peaks of the bcc-Fe phase with the line widths increasing with the milling time. This corresponds to a flattening of the crystallites, as confirmed by SEM, and increased strain due to the accumulation of defects. The effect is consistent with the variation of the Mossbauer line-widths with the milling time. Scanning Transmission Xray Microscopy (STXM) measurements provided oxygen maps of the particles and revealed that the dominant oxide in the nanometric oxide layer is magnetite. The 57 Fe spin echo NMR study reveals a dominant signal corresponding to a bcc-Fe core and a much weaker resonance corresponding to a magnetite amount of less than 1%. C1 [Przewoznik, J.; Rybicki, D.; Zukrowski, J.; Szczerba, W.; Sikora, M.; Kapusta, Cz.] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, Mickiewicza 30, PL-30059 Krakow, Poland. [Tyliszczak, T.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Stepankova, H.] Charles Univ Prague, Fac Math & Phys, CR-12116 Prague, Czech Republic. [Pacheco, R. F.; Serrate, D.; Ibarra, M. R.] Univ Zaragoza, Fac Ciencias, E-50009 Zaragoza, Spain. [Ibarra, M. R.] Univ Zaragoza INA, Inst Nanociencia Aragon, E-50009 Zaragoza, Spain. RP Przewoznik, J (reprint author), AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, Mickiewicza 30, PL-30059 Krakow, Poland. EM januszp@agh.edu.pl; tolek@lbl.gov; ryba@agh.edu.pl; zukrow@agh.edu.pl; wsz@agh.edu.pl; marcins@agh.edu.pl; kapusta@agh.edu.pl RI Sikora, Marcin/F-9998-2010; Ibarra, Manuel Ricardo/K-1150-2014 OI Sikora, Marcin/0000-0003-4491-3496; Ibarra, Manuel Ricardo/0000-0003-0681-8260 FU European Commission [027827]; Polish Ministry of Science and Higher Education; Faculty of Physics and Applied Computer Sciences at AGH University of Science and Technology in Cracow FX The work was supported by the European Commission, grant No. 027827, STREP - MUNDIS and by the Polish Ministry of Science and Higher Education, statutory funds for the Faculty of Physics and Applied Computer Sciences at AGH University of Science and Technology in Cracow. NR 8 TC 1 Z9 1 U1 0 U2 5 PU TRANS TECH PUBLICATIONS LTD PI DURNTEN-ZURICH PA KREUZSTRASSE 10, 8635 DURNTEN-ZURICH, SWITZERLAND SN 1012-0394 J9 SOLID STATE PHENOMEN PY 2008 VL 140 BP 47 EP + PG 2 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Science & Technology - Other Topics; Materials Science GA BIG91 UT WOS:000259400400006 ER PT B AU May, M AF May, Michael BE Twomey, CP TI THE US-CHINA STRATEGIC RELATIONSHIP SO PERSPECTIVES ON SINO-AMERICAN STRATEGIC NUCLEAR ISSUES SE Initiatives in Strategic Studies-Issues and Policies LA English DT Article; Book Chapter C1 [May, Michael] Stanford Univ, Sch Engn, Stanford, CA 94305 USA. [May, Michael] Stanford Univ, Freeman Spogli Inst Int Studies, Ctr Int Secur & Cooperat, Stanford, CA 94305 USA. [May, Michael] Lawrence Livermore Natl Lab, Livermore, CA USA. RP May, M (reprint author), Stanford Univ, Sch Engn, Stanford, CA 94305 USA. NR 12 TC 0 Z9 0 U1 0 U2 0 PU PALGRAVE PI BASINGSTOKE PA HOUNDMILLS, BASINGSTOKE RG21 6XS, ENGLAND BN 978-0-230-61316-4 J9 INITIAT STRATEG STUD PY 2008 BP 41 EP 56 D2 10.1057/9780230613164 PG 16 WC International Relations; Political Science SC International Relations; Government & Law GA BRM90 UT WOS:000283132300003 ER PT S AU Scholtz, J Theofanos, M Consolvo, S AF Scholtz, Jean Theofanos, Mary Consolvo, Sunny BE Kourouthanassis, PE Giaglis, GM TI A FRAMEWORK FOR THE EVALUATION OF PERVASIVE INFORMATION SYSTEMS SO PERVASIVE INFORMATION SYSTEMS SE Advances in Management Information Systems LA English DT Article; Book Chapter DE Evaluation; Measures; Methodologies; Metrics; Pervasive Computing ID COMPUTER; TECHNOLOGY; ACCEPTANCE; DESIGN; ISSUES; MODELS AB As pervasive information systems weave their way into society, it is critical that these new systems are accepted and utilized. However, it is difficult to determine what makes for a good design and a successful interaction because evaluation methodologies and metrics are in their infancy for these types of systems. The complexity and diversity of these systems has made it difficult to establish common evaluation techniques and practices. However, the necessity for such a framework is overwhelmingly apparent. A framework will make it easier for researchers to learn from each other's results, create effective discount evaluation techniques and design guidelines for pervasive computing, provide a mechanism for researchers to share what they have learned about the appropriateness of different evaluation techniques, and provide structure so that key areas of evaluation are not overlooked. In this chapter, we present a framework of areas of evaluation for pervasive information systems. The framework includes nine evaluation areas that include elements of usability, interaction, and values (such as privacy and trust). We present sample metrics and measures and examples for each area from the literature. We review a number of methodologies that have been used in evaluation and provide a case study of an evaluation using a number of the evaluation areas in the framework. We conclude with a discussion of future needs to enable researchers to share evaluation results. C1 [Scholtz, Jean; Theofanos, Mary] NIST, Visualizat & Usabil Grp, Ind Usabil Reporting Project, Gaithersburg, MD 20899 USA. [Scholtz, Jean] Berkeleys Endeavor Project, Berkeley, CA USA. [Scholtz, Jean] Intel Corp, Santa Clara, CA 95051 USA. [Scholtz, Jean] Portland State Univ, Fac Comp Sci, Portland, OR 97207 USA. [Theofanos, Mary] Natl Canc Inst, Commun Technol Res Ctr, Bethesda, MD 20892 USA. [Theofanos, Mary] US DOE, Washington, DC 20585 USA. RP Scholtz, J (reprint author), NIST, Visualizat & Usabil Grp, Ind Usabil Reporting Project, Gaithersburg, MD 20899 USA. NR 49 TC 0 Z9 0 U1 0 U2 1 PU M E SHARPE INC PI ARMONK PA 80 BUSINESS PARK DRIVE, ARMONK, NY 10504 USA SN 1554-6152 BN 978-0-7656-1689-0 J9 ADV MANAG INFORM SYS PY 2008 VL 10 BP 210 EP 231 PG 22 WC Computer Science, Information Systems; Information Science & Library Science SC Computer Science; Information Science & Library Science GA BRQ88 UT WOS:000283438800012 ER PT B AU Shalf, J Oliker, L Lijewski, M Kamil, S Carter, J Canning, A Ethier, S AF Shalf, John Oliker, Leonid Lijewski, Michael Kamil, Shoaib Carter, Jonathan Canning, Andrew Ethier, Stephane BE Bader, DA TI Performance Characteristics of Potential Petascale Scientific Applications SO PETASCALE COMPUTING: ALGORITHMS AND APPLICATIONS SE Chapman & Hall-CRC Computational Science Series LA English DT Article; Book Chapter AB After a decade where HEC (high-end computing) capability was dominated by the rapid pace of improvements to CPU clock frequency, the performance of next-generation supercomputers is increasingly differentiated by varying interconnect designs and levels of integration. Understanding the trade-offs of these system designs, in the context of high-end numerical simulations, is a key step towards making effective petascale computing a reality. This work represents one of the most comprehensive performance evaluation studies to date on modern HEC systems, including the IBM Power5, AMD Opteron, IBM BG/L, and Cray X1E. A novel aspect of our study is the emphasis on full applications, with real input data at the scale desired by computational scientists in their unique domain. We examine five candidate ultra-scale applications, representing a broad range of algorithms and computational structures. Our work includes the highest concurrency experiments to date on five of our six applications, including 32K processor scalability for two of our codes and describes several successful optimization strategies on BG/L, as well as improved X1E vectorization. Overall results indicate that our evaluated codes have the potential to effectively utilize petascale resources; however, several applications will require reengineering to incorporate the additional levels of parallelism necessary to utilize the vast concurrency of upcoming ultra-scale systems. C1 [Shalf, John; Oliker, Leonid; Lijewski, Michael; Kamil, Shoaib; Carter, Jonathan; Canning, Andrew] Univ Calif Berkeley, Lawrence Berkeley Lab, CRD NERSC, Berkeley, CA 94720 USA. [Ethier, Stephane] Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08453 USA. RP Shalf, J (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, CRD NERSC, Berkeley, CA 94720 USA. NR 30 TC 2 Z9 2 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 978-1-58488-909-0 J9 CH CRC COMP SCI SER PY 2008 BP 1 EP 28 PG 28 WC Computer Science, Theory & Methods SC Computer Science GA BKA06 UT WOS:000267566400001 ER PT B AU Ashby, SF May, JM AF Ashby, Steven F. May, John M. BE Bader, DA TI Multiphysics Simulations and Petascale Computing SO PETASCALE COMPUTING: ALGORITHMS AND APPLICATIONS SE Chapman & Hall-CRC Computational Science Series LA English DT Article; Book Chapter C1 [Ashby, Steven F.; May, John M.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Ashby, SF (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 18 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 978-1-58488-909-0 J9 CH CRC COMP SCI SER PY 2008 BP 47 EP + PG 21 WC Computer Science, Theory & Methods SC Computer Science GA BKA06 UT WOS:000267566400003 ER PT B AU Norman, ML Bordner, J Reynolds, D Wagner, R Bryan, GL Harkness, R O'Shea, B AF Norman, Michael L. Bordner, James Reynolds, Daniel Wagner, Rick Bryan, Greg L. Harkness, Robert O'Shea, Brian BE Bader, DA TI Simulating Cosmological Evolution with Enzo SO PETASCALE COMPUTING: ALGORITHMS AND APPLICATIONS SE Chapman & Hall-CRC Computational Science Series LA English DT Article; Book Chapter ID ADAPTIVE MESH REFINEMENT; HYDRODYNAMICS C1 [Norman, Michael L.; Bordner, James; Reynolds, Daniel; Wagner, Rick] Univ Calif San Diego, Ctr Astrophys & Space Sci, Lab Computat Astrophys, La Jolla, CA 92093 USA. [Bryan, Greg L.] Columbia Univ, Dept Astron, New York, NY 10027 USA. [Harkness, Robert] Univ Calif San Diego, San Diego Supercomp Ctr, La Jolla, CA 92093 USA. [O'Shea, Brian] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Norman, ML (reprint author), Univ Calif San Diego, Ctr Astrophys & Space Sci, Lab Computat Astrophys, 9500 Gilman Dr, La Jolla, CA 92093 USA. EM mlnorman@ucsd.edu; jobordner@ucsd.edu; drreynolds@ucsd.edu; rpwagner@ucsd.edu; gbryan@astro.columbia.edu; harkness@sdsc.edu; bwoshea@lanl.gov NR 16 TC 12 Z9 12 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 978-1-58488-909-0 J9 CH CRC COMP SCI SER PY 2008 BP 83 EP + PG 21 WC Computer Science, Theory & Methods SC Computer Science GA BKA06 UT WOS:000267566400005 ER PT B AU Drake, JB Jones, PW Vertenstein, M White, JB Worley, PH AF Drake, John B. Jones, Philip W. Vertenstein, Mariana White, James B., III Worley, Patrick H. BE Bader, DA TI Software Design for Petascale Climate Science SO PETASCALE COMPUTING: ALGORITHMS AND APPLICATIONS SE Chapman & Hall-CRC Computational Science Series LA English DT Article; Book Chapter ID VOLUME DYNAMICAL CORE; SEA-ICE; PERFORMANCE PORTABILITY; SYSTEM MODEL; COMMUNITY; GRIDS C1 [Drake, John B.; White, James B., III; Worley, Patrick H.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Jones, Philip W.] Los Alamos Natl Lab, Los Alamos, NM USA. [Vertenstein, Mariana] Natl Ctr Atmospher Res, Boulder, CO 80307 USA. RP Drake, JB (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. NR 40 TC 4 Z9 4 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 978-1-58488-909-0 J9 CH CRC COMP SCI SER PY 2008 BP 125 EP 146 PG 22 WC Computer Science, Theory & Methods SC Computer Science GA BKA06 UT WOS:000267566400007 ER PT B AU Agarwal, PK Alam, SP Geist, A AF Agarwal, Pratul K. Alam, Sadaf Pl. Geist, Al BE Bader, DA TI Simulating Biomolecules on the Petascale Supercomputers SO PETASCALE COMPUTING: ALGORITHMS AND APPLICATIONS SE Chapman & Hall-CRC Computational Science Series LA English DT Article; Book Chapter ID MOLECULAR-DYNAMICS SIMULATIONS; ENZYME CATALYSIS; PROTEIN DYNAMICS; CYCLOPHILIN-A; FORCE-FIELDS; ISOMERIZATION; PROGRAM; SYSTEMS; ENERGY C1 [Agarwal, Pratul K.] Univ Tennessee, Knoxville, TN USA. [Agarwal, Pratul K.; Alam, Sadaf Pl.; Geist, Al] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Agarwal, PK (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. EM agarwalpk@ornl.gov; alamsr@ornl.gov; gst@ornl.gov NR 40 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 978-1-58488-909-0 J9 CH CRC COMP SCI SER PY 2008 BP 211 EP + PG 27 WC Computer Science, Theory & Methods SC Computer Science GA BKA06 UT WOS:000267566400011 ER PT B AU Madduri, K Bader, DA Berry, JW Crobak, JR Hendrickson, BA AF Madduri, Kamesh Bader, David A. Berry, Jonathan W. Crobak, Joseph R. Hendrickson, Bruce A. BE Bader, DA TI Multithreaded Algorithms for Processing Massive Graphs SO PETASCALE COMPUTING: ALGORITHMS AND APPLICATIONS SE Chapman & Hall-CRC Computational Science Series LA English DT Article; Book Chapter ID SOURCE SHORTEST PATHS; NETWORKS; CENTRALITY; TIME; BETWEENNESS C1 [Madduri, Kamesh; Bader, David A.] Georgia Inst Technol, Atlanta, GA 30332 USA. [Berry, Jonathan W.; Hendrickson, Bruce A.] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Crobak, Joseph R.] Rutgers State Univ, Piscataway, NJ USA. RP Madduri, K (reprint author), Georgia Inst Technol, Atlanta, GA 30332 USA. NR 46 TC 22 Z9 22 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 978-1-58488-909-0 J9 CH CRC COMP SCI SER PY 2008 BP 237 EP 262 PG 26 WC Computer Science, Theory & Methods SC Computer Science GA BKA06 UT WOS:000267566400012 ER PT B AU Dongarra, JJ Chen, ZZ Bosilca, G Langou, J AF Dongarra, Jack J. Chen, Zizhong Bosilca, George Langou, Julien BE Bader, DA TI Disaster Survival Guide in Petascale Computing: An Algorithmic Approach SO PETASCALE COMPUTING: ALGORITHMS AND APPLICATIONS SE Chapman & Hall-CRC Computational Science Series LA English DT Article; Book Chapter ID OPTIMUM CHECKPOINT INTERVAL; HIGH-PERFORMANCE; FAULT-TOLERANCE; SYSTEMS C1 [Dongarra, Jack J.; Bosilca, George] Univ Tennessee, Dept Elect Engn & Comp Sci, Innovat Comp Lab, Knoxville, TN 37996 USA. [Chen, Zizhong] Jacksonville State Univ, Jacksonville, AL 36265 USA. [Langou, Julien] Univ Colorado, Hlth Sci Ctr, Dept Math Sci, Denver, CO 80202 USA. [Dongarra, Jack J.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Dongarra, Jack J.] Univ Manchester, Manchester M13 9PL, Lancs, England. RP Dongarra, JJ (reprint author), Univ Tennessee, Dept Elect Engn & Comp Sci, Innovat Comp Lab, Knoxville, TN 37996 USA. EM dongarra@cs.utk.edu; zchen@jsu.edu; bosilca@cs.utk.edu; julien.langou@cudenver.edu NR 25 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 978-1-58488-909-0 J9 CH CRC COMP SCI SER PY 2008 BP 263 EP 288 PG 26 WC Computer Science, Theory & Methods SC Computer Science GA BKA06 UT WOS:000267566400013 ER PT B AU Strohmaier, E AF Strohmaier, Erich BE Bader, DA TI Performance and its Complexity on Petascale Systems SO PETASCALE COMPUTING: ALGORITHMS AND APPLICATIONS SE Chapman & Hall-CRC Computational Science Series LA English DT Article; Book Chapter C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Strohmaier, E (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 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 978-1-58488-909-0 J9 CH CRC COMP SCI SER PY 2008 BP 333 EP + PG 22 WC Computer Science, Theory & Methods SC Computer Science GA BKA06 UT WOS:000267566400016 ER PT B AU Freundl, C Gradl, T Rude, U Bergen, B AF Freundl, Christoph Gradl, Tobias Ruede, Ulrich Bergen, Benjamin BE Bader, DA TI Towards Petascale Multilevel Finite-Element Solvers SO PETASCALE COMPUTING: ALGORITHMS AND APPLICATIONS SE Chapman & Hall-CRC Computational Science Series LA English DT Article; Book Chapter C1 [Freundl, Christoph; Gradl, Tobias; Ruede, Ulrich] Univ Erlangen Nurnberg, Erlangen, Germany. [Bergen, Benjamin] Los Alamos Natl Lab, Los Alamos, NM USA. RP Freundl, C (reprint author), Univ Erlangen Nurnberg, Erlangen, Germany. NR 19 TC 3 Z9 3 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 978-1-58488-909-0 J9 CH CRC COMP SCI SER PY 2008 BP 375 EP 389 PG 15 WC Computer Science, Theory & Methods SC Computer Science GA BKA06 UT WOS:000267566400018 ER PT B AU Norris, B Hartono, A Gropp, WD AF Norris, Boyana Hartono, Albert Gropp, William D. BE Bader, DA TI Annotations for Productivity and Performance Portability SO PETASCALE COMPUTING: ALGORITHMS AND APPLICATIONS SE Chapman & Hall-CRC Computational Science Series LA English DT Article; Book Chapter ID LIBRARIES C1 [Norris, Boyana; Gropp, William D.] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. [Hartono, Albert] Ohio State Univ, Dept Comp Sci & Engn, Columbus, OH 43210 USA. RP Norris, B (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. EM norris@mcs.anl.gov; hartonoa@cse.ohio-state.edu; gropp@mcs.anl.gov OI Norris, Boyana/0000-0001-5811-9731 NR 20 TC 3 Z9 3 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 978-1-58488-909-0 J9 CH CRC COMP SCI SER PY 2008 BP 443 EP 462 PG 20 WC Computer Science, Theory & Methods SC Computer Science GA BKA06 UT WOS:000267566400021 ER PT B AU Schnetter, E Ott, CD Allen, G Diener, P Goodale, T Radke, T Seidel, E Shalf, J AF Schnetter, Erik Ott, Christian D. Allen, Gabrielle Diener, Peter Goodale, Tom Radke, Thomas Seidel, Edward Shalf, John BE Bader, DA TI Cactus Framework: Black Holes to Gamma Ray Bursts SO PETASCALE COMPUTING: ALGORITHMS AND APPLICATIONS SE Chapman & Hall-CRC Computational Science Series LA English DT Article; Book Chapter ID ADAPTIVE MESH REFINEMENT; SUPERNOVA; SIMULATIONS; COLLAPSE; EXPLOSIONS; EQUATIONS; STARS C1 [Schnetter, Erik; Allen, Gabrielle; Diener, Peter; Goodale, Tom; Seidel, Edward] Louisiana State Univ, Ctr Computat & Technol, Baton Rouge, LA 70803 USA. [Schnetter, Erik; Diener, Peter] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA. [Seidel, Edward] Louisiana State Univ, Dept Phys, Baton Rouge, LA 70803 USA. [Ott, Christian D.] Univ Arizona, Dept Astron, Tucson, AZ USA. [Ott, Christian D.] Univ Arizona, Steward Observ, Tucson, AZ USA. [Goodale, Tom] Cardiff Univ, Sch Comp Sci, Cardiff, S Glam, Wales. [Shalf, John] Univ Calif Berkeley, Lawrence Berkeley Lab, CRD NERSC, Berkeley, CA 94720 USA. [Radke, Thomas] Albert Einstein Inst, Max Planck Inst Gravitat Phys, Golm, Germany. [Allen, Gabrielle] Louisiana State Univ, Dept Comp Sci, Baton Rouge, LA 70803 USA. RP Schnetter, E (reprint author), Louisiana State Univ, Ctr Computat & Technol, Baton Rouge, LA 70803 USA. NR 36 TC 3 Z9 3 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 978-1-58488-909-0 J9 CH CRC COMP SCI SER PY 2008 BP 507 EP + PG 23 WC Computer Science, Theory & Methods SC Computer Science GA BKA06 UT WOS:000267566400024 ER PT J AU Christen, HM Varela, M Kim, DH AF Christen, Hans M. Varela, Maria Kim, Dae Ho TI The effect of strain and strain symmetry on the charge-order transition in Bi0.4Ca0.6MnO3 films SO PHASE TRANSITIONS LA English DT Article DE charge order; bismuth manganite; epitaxial strain; thin films ID MAGNETIC PHASE-DIAGRAM; MANGANITE THIN-FILMS; MN K EDGE; MAGNETORESISTIVE MANGANITES; PEROVSKITE; BI1-XCAXMNO3; DIFFRACTION; PHYSICS; IMAGES; OXIDES AB The transition to a charge and orbital ordered (CO/OO) state in epitaxial manganite films is strongly influenced by lattice strain. Bi1-xCaxMnO3 is a particularly interesting material due to its high transition temperature and its relation to other Bi-based materials. Here, we review its properties and show the effects of strain and strain symmetry on Bi0.4Ca0.6MnO3 films on SrTiO3 (STO) and LaAlO3 substrates with (pseudocubic) (001) and (011) orientations. Transport and magnetization data are compared to four-circle X-ray diffraction and high-resolution Z-contrast scanning transmission microscopy data. We observe the spontaneous formation of single-unit-cell thick, Bi-rich layers only on (001) STO substrates and different defect structures depending on the substrate type and orientation. This shows that the details of epitaxial strain play a role not only at phase transitions, but also during the growth of these materials. Results are compared to those published for other CO/OO manganite films. C1 [Christen, Hans M.; Varela, Maria; Kim, Dae Ho] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA. RP Christen, HM (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA. EM christenhm@ornl.gov RI Kim, Dae Ho/B-4670-2012; Varela, Maria/H-2648-2012; Christen, Hans/H-6551-2013; Varela, Maria/E-2472-2014 OI Christen, Hans/0000-0001-8187-7469; Varela, Maria/0000-0002-6582-7004 NR 50 TC 3 Z9 3 U1 0 U2 4 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0141-1594 EI 1029-0338 J9 PHASE TRANSIT JI Phase Transit. PY 2008 VL 81 IS 7-8 BP 717 EP 727 DI 10.1080/01411590802048307 PG 11 WC Crystallography; Physics, Condensed Matter SC Crystallography; Physics GA 331QA UT WOS:000258026200008 ER PT J AU Richardson, TJ AF Richardson, Thomas J. TI Phase transitions in non-hydride switchable mirror thin films SO PHASE TRANSITIONS LA English DT Article DE electrochromism; switchable mirrors; optoelectronics; thin films ID CRYSTAL-STRUCTURE; KINETIC-PARAMETERS; ROOM-TEMPERATURE; DEGREES K; LITHIUM; ALLOY; CONSTITUTION; ELECTRODES; COPPER; LI3SB AB Switchable mirrors modulate incident light by changes in the reflectivity of thin films that are converted by chemical reactions from a metallic reflective state to a semiconducting transparent state. The reactions may be effected by exposure to a gas, by treatment with a liquid reagent, or by electrochemical means. The changes in optical properties coincide with phase transformations. In the examples reviewed here, the reactions are accompanied by substantial volume changes and atomic rearrangement. Bismuth, antimony, and antimony alloy films are switched by electrochemical lithiation. Copper films are electrochemically oxidized to Cu(I) and Cu(II) oxides, which are transparent and opaque, respectively. Morphological changes in all films during cycling lead to degradation in performance without loss of active material. Strategies to improve the cycling stability of these systems are discussed. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. RP Richardson, TJ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. EM tjrichardson@lbl.gov NR 23 TC 1 Z9 1 U1 1 U2 5 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0141-1594 J9 PHASE TRANSIT JI Phase Transit. PY 2008 VL 81 IS 7-8 BP 807 EP 813 DI 10.1080/01411590801911406 PG 7 WC Crystallography; Physics, Condensed Matter SC Crystallography; Physics GA 331QA UT WOS:000258026200013 ER PT J AU Kim, TH Goldman, AI Kelton, KF AF Kim, T. H. Goldman, A. I. Kelton, K. F. TI Structural study of supercooled liquid silicon SO PHILOSOPHICAL MAGAZINE LA English DT Article ID BOND-ORIENTATIONAL ORDER; X-RAY-DIFFRACTION; MOLECULAR-DYNAMICS; ELECTROSTATIC LEVITATOR; AMORPHOUS-SILICON; MOLTEN SILICON; CRYSTALLIZATION; TEMPERATURE; SIMULATIONS; GLASSES AB For many years, theoretical studies using model and ab initio potentials have predicated the existence of a liquid/liquid phase transition in silicon, based on a continuous change of the liquid A5 structure to A4. In contrast, we report here a quantitative analysis of data from high-energy X-ray diffraction measurements of containerlessly-processed supercooled liquid silicon that demonstrates that the fractions of regions with A5 and A4 order instead remain essentially constant with supercooling, but that the coherence length of the A5 order increases. C1 [Kim, T. H.; Kelton, K. F.] Washington Univ, Dept Phys, St Louis, MO 63130 USA. [Goldman, A. I.] Iowa State Univ, Ames Lab, USDOE, Ames, IA 50011 USA. [Goldman, A. I.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. RP Kim, TH (reprint author), Washington Univ, Dept Phys, St Louis, MO 63130 USA. EM thkim@physics.wustl.edu NR 29 TC 7 Z9 7 U1 5 U2 15 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 1478-6435 J9 PHILOS MAG JI Philos. Mag. PY 2008 VL 88 IS 2 BP 171 EP 179 DI 10.1080/14786430701798944 PG 9 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 257VI UT WOS:000252826400003 ER PT J AU Zhang, ZH Yang, N Zhou, YZ Lavernia, EJ AF Zhang, Zhihui Yang, Nancy Zhou, Yizhang Lavernia, Enrique J. TI Nanocrystal formation in gas-atomized amorphous Al(85)Ni(10)La(5) alloy SO PHILOSOPHICAL MAGAZINE LA English DT Article DE amorphous alloys; crystallization; eutectic; Al-Ni-La alloy ID FCC-AL PARTICLES; METALLIC GLASSES; CRYSTALLIZATION BEHAVIOR; MECHANICAL-PROPERTIES; AL85NI10Y2.5LA2.5 ALLOY; PHASE-SEPARATION; NI; ALUMINUM; DEVITRIFICATION; MICROSTRUCTURE AB An Al(85)Ni(10)La(5) amorphous alloy, produced via gas atomization, was selected to study the mechanisms of nanocrystallization induced by thermal exposure. High resolution transmission electron microscopy results indicated the presence of quenched-in Al nuclei in the amorphous matrix of the atomized powder. However, a eutectic-like reaction, which involved the formation of the Al, Al(11)La(3), and Al(3)Ni phases, was recorded in the first crystallization event (263 degrees C) during differential scanning calorimetry continuous heating. Isothermal annealing experiments conducted below 263 degrees C revealed that the formation of single fcc-Al phase occurred at 235 degrees C. At higher temperatures, growth of the Al crystals occurred with formation of intermetallic phases, leading to a eutectic-like transformation behaviour at 263 degrees C. During the first crystallization stage, nanocrystals were developed in the size range of 5 30 nm. During the second crystallization event (283 degrees C), a bimodal size distribution of nanocrystals was formed with the smaller size in the range of around 10 30 nm and the larger size around 100 nm. The influence of pre-existing quenched-in Al nuclei on the microstructural evolution in the amorphous Al(85)Ni(10)La(5) alloy is discussed and the effect of the microstructural evolution on the hardening behaviour is described in detail. C1 [Zhang, Zhihui; Zhou, Yizhang; Lavernia, Enrique J.] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA. [Yang, Nancy] Sandia Natl Labs, Livermore, CA 94550 USA. RP Zhang, ZH (reprint author), Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA. EM zhizhang@ucdavis.edu RI Lavernia, Enrique/I-6472-2013 OI Lavernia, Enrique/0000-0003-2124-8964 NR 42 TC 2 Z9 2 U1 1 U2 3 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 1478-6435 J9 PHILOS MAG JI Philos. Mag. PY 2008 VL 88 IS 5 BP 737 EP 753 DI 10.1080/14786430801955246 PG 17 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 292UQ UT WOS:000255292000007 ER PT J AU Chapline, G AF Chapline, G. TI Superfluid transition in a chiron gas SO PHILOSOPHICAL MAGAZINE LA English DT Article ID T-C; SUPERCONDUCTORS; VORTICES; MODEL AB Low temperature measurements of the magnetic susceptibility of LaCuO(4) doped with Sr (LSCO) suggest that superconducting transition is associated with the disappearance of the vortex liquid. This note draws attention to the possibility that these vortices can be identified with the soliton-like charge carriers introduced in a previous theory of spin-orbit localization in layered poor conductors. In two-dimensions, these solitons are vortex-like, while in three-dimensional systems they are monopole-like. In either case, there is a natural mechanism for the pairing of spin-up and spin-down solitons. At low temperatures, there is a also cross-over transition which is a function of carrier density between a state where the solitons can move independently and a condensate state where the spin-up and spin-down solitons in neighbouring layers are paired. C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Chapline, G (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. EM chapline1@llnl.gov NR 18 TC 1 Z9 1 U1 0 U2 0 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 1478-6435 J9 PHILOS MAG JI Philos. Mag. PY 2008 VL 88 IS 8 BP 1227 EP 1233 DI 10.1080/14786430802097600 PG 7 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 317PC UT WOS:000257031100006 ER PT J AU Wang, ZQ Beyerlein, IJ Lesar, R AF Wang, Z. Q. Beyerlein, I. J. LeSar, R. TI Slip band formation and mobile dislocation density generation in high rate deformation of single fcc crystals SO PHILOSOPHICAL MAGAZINE LA English DT Article DE slip bands; high strain rate; inertial effects; cross-slip; microbands; dislocation dynamics ID HIGH-STRAIN RATES; CROSS-SLIP; PLASTIC-DEFORMATION; ELASTIC FIELD; COPPER; METALS; SHOCK; MULTIPLICATION; THERMODYNAMICS; DYNAMICS AB The mechanisms for the nucleation, thickening, and growth of crystallographic slip bands from the sub-nanoscale to the microscale are studied using three-dimensional dislocation dynamics. In the simulations, a single fcc crystal is strained along the [111] direction at three different high strain rates: 10(4), 10(5), and 10(6) s(-1). Dislocation inertia and drag are included and the simulations were conducted with and without cross-slip. With cross-slip, slip bands form parallel to active (111) planes as a result of double cross-slip onto fresh glide planes within localized regions of the crystal. In this manner, fine nanoscale slip bands nucleate throughout the crystal, and, with further straining, build up to larger bands by a proposed self-replicating mechanism. It is shown that slip bands are regions of concentrated glide, high dislocation multiplication rates, and high dislocation velocities. Cross-slip increases in activity proportionally with the product of the total dislocation density and the square root of the applied stress. Effects of cross-slip on work hardening are attributed to the role of cross-slip on mobile dislocation generation, rather than slip band formation. A new dislocation density evolution law is presented for high rates, which introduces the mobile density, a state variable that is missing in most constitutive laws. C1 [Wang, Z. Q.; Beyerlein, I. J.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. [LeSar, R.] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA. RP Beyerlein, IJ (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. EM irene@lanl.gov RI LeSar, Richard/G-1609-2012; Beyerlein, Irene/A-4676-2011 NR 50 TC 18 Z9 18 U1 3 U2 21 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 1478-6435 J9 PHILOS MAG JI Philos. Mag. PY 2008 VL 88 IS 9 BP 1321 EP 1343 DI 10.1080/14786430802129833 PG 23 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 320YP UT WOS:000257271400004 ER PT J AU Mendelev, MI Kramer, MJ Becker, CA Asta, M AF Mendelev, M. I. Kramer, M. J. Becker, C. A. Asta, M. TI Analysis of semi-empirical interatomic potentials appropriate for simulation of crystalline and liquid Al and Cu SO PHILOSOPHICAL MAGAZINE LA English DT Article DE ab initio; diffraction methods; diffusion; interatomic potential; liquid metals; molecular dynamic simulations; solidification ID INTERFACIAL FREE-ENERGY; EMBEDDED-ATOM-METHOD; X-RAY-DIFFRACTION; MOLECULAR-DYNAMICS; TRANSITION-METALS; SOLIDIFICATION; NUCLEATION; ALUMINUM; SYSTEM; SEGREGATION AB We investigate the application of embedded atom method (EAM) interatomic potentials in the study of crystallization kinetics from deeply undercooled melts, focusing on the fcc metals Al and Cu. For this application, it is important that the EAM potential accurately reproduces melting properties and liquid structure, in addition to the crystalline properties most commonly fit in its development. To test the accuracy of previously published EAM potentials and to guide the development of new potential in this work, first-principles calculations have been performed and new experimental measurements of the Al and Cu liquid structure factors have been undertaken by X-ray diffraction. We demonstrate that the previously published EAM potentials predict a liquid structure that is too strongly ordered relative to measured diffraction data. We develop new EAM potentials for Al and Cu to improve the agreement with the first-principles and measured liquid diffraction data. Furthermore, we calculate liquid-phase diffusivities and find that this quantity correlates well with the liquid structure. Finally, we perform molecular dynamics simulations of crystal nucleation from the melt during quenching at constant cooling rate. We find that EAM potentials, which predict the same zero-temperature crystal properties but different liquid structures, can lead to quite different crystallization kinetics. More interestingly, we find that two potentials predicting very similar equilibrium solid and liquid properties can still produce very different crystallization kinetics under far-from-equilibrium conditions characteristic of the rapid quenching simulations employed here. C1 [Mendelev, M. I.; Kramer, M. J.] Ames Lab, Ames, IA 50011 USA. [Becker, C. A.] Natl Inst Stand & Technol, Div Met, Gaithersburg, MD 20899 USA. [Asta, M.] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA. RP Mendelev, MI (reprint author), Ames Lab, Ames, IA 50011 USA. EM mendelev@ameslab.gov FU Department of Energy, Office of Basic Energy Sciences [DE-AC02-07CH11358, DE-FG02-06ER46282]; US Department of Energy, Office of Science, Basic Energy Sciences [DE-AC02-06CH11357] FX The authors thank J. R. Morris and G. J. Ackland for helpful discussions. Work at the Ames Laboratory was supported by the Department of Energy, Office of Basic Energy Sciences, under Contract No. DE-AC02-07CH11358. The high-energy X-ray work at the MUCAT sector of the APS was supported by the US Department of Energy, Office of Science, Basic Energy Sciences under Contract No. DE-AC02-06CH11357. MA and CB acknowledge funding from the Department of Energy, Office of Basic Energy Sciences, under Contract No. DE-FG02-06ER46282. A portion of this work was completed by CB and MA while at Northwestern University. This work benefited from collaborations fostered through support by the DOE Computational Materials Science Network program. Certain commercial equipment, instruments or materials are identified in this paper to specify the experimental procedure adequately. Such identification is not intended to imply recommendation or endorsement by the National Institute of Standards and Technology, nor is it intended to imply that the materials or equipment are necessarily the best available for the purpose. NR 68 TC 106 Z9 106 U1 7 U2 55 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 1478-6435 J9 PHILOS MAG JI Philos. Mag. PY 2008 VL 88 IS 12 BP 1723 EP 1750 DI 10.1080/14786430802206482 PG 28 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 344MP UT WOS:000258932000001 ER PT J AU Pussi, K Reid, DE Ferralis, N McGrath, R Lograsso, TA Ross, AR Diehl, RD AF Pussi, K. Reid, D. E. Ferralis, N. McGrath, R. Lograsso, T. A. Ross, A. R. Diehl, R. D. TI Low-energy electron diffraction (LEED) study of an aperiodic thin film of Cu on 5-fold i-Al-Pd-Mn SO PHILOSOPHICAL MAGAZINE LA English DT Article DE adsorption; copper; quasicrystals; thin films ID SURFACE; GROWTH AB Thin films of copper grown on five-fold i-AlPdMn at room temperature consist of domains that are rotationally aligned with the five primary symmetry directions of the substrate and which have one-dimensional aperiodic order. This aperiodic order is evident in scanning tunnelling microscopy images as wide and narrow rows that are spaced according to a Fibonacci sequence. A low-energy electron diffraction (LEED) study of this film indicates that the structure within the domains is periodic along the rows, with a repeat distance equal to the nearest-neighbour separation in bulk Cu. To determine the complete structure, a dynamical LEED experiment was performed for a five-layer Cu film at a sample temperature of 85 K. The analysis was performed using two different computational methods, one based on quasicrystalline slabs and the other on periodic approximants. Of the model structures tested, the film is found to be most consistent with a structure based on the Cu{100} surface structure, but having aperiodic displacements, both in-plane and out-of-plane, along a < 110 > direction. C1 [Pussi, K.] Lappeenranta Univ Technol, Dept Elect Engn, FIN-53851 Lappeenranta, Finland. [Reid, D. E.; McGrath, R.] Univ Liverpool, Surface Sci Res Ctr, Liverpool L69 3BX, Merseyside, England. [Reid, D. E.; McGrath, R.] Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, England. [Ferralis, N.; Diehl, R. D.] Penn State Univ, Dept Phys, University Pk, PA 16802 USA. [Lograsso, T. A.; Ross, A. R.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. RP Pussi, K (reprint author), Lappeenranta Univ Technol, Dept Elect Engn, POB 20, FIN-53851 Lappeenranta, Finland. EM katariina.pussi@lut.fi RI McGrath, Ronan/A-1568-2009 OI McGrath, Ronan/0000-0002-9880-5741 FU The Academy of Finland [204726]; NSF [DMR0505160] FX We gratefully acknowledge many useful and interesting discussions with Julian Ledieu, Joe Smerdon and Martin Gierer. This research was supported by The Academy of Finland (Project No. 204726) and NSF (Grant No. DMR0505160). NR 13 TC 4 Z9 4 U1 0 U2 2 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 1478-6435 J9 PHILOS MAG JI Philos. Mag. PY 2008 VL 88 IS 13-15 BP 2103 EP 2110 DI 10.1080/14786430701832412 PG 8 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 361JK UT WOS:000260123700026 ER PT J AU Thiel, PA AF Thiel, P. A. TI Discussion on the surface science of quasicrystals SO PHILOSOPHICAL MAGAZINE LA English DT Article DE quasicrystals; intermetallics; aluminades; surfaces; interfaces ID AL-PD-MN; COMPLEX METALLIC ALLOYS; EPITAXIAL FILM GROWTH; ADHESION PROPERTIES; FRICTION; DEPOSITION; VACUUM; CO; ADSORPTION; ANISOTROPY AB This paper contains a short review of four aspects of the surface science of quasicrystals, together with a list of challenges for the scientific community in the near future. The first issue concerns the ability of surface science to shed light on bulk atomic structure. The second is the use of surfaces as quasiperiodic templates, particularly for films of periodic metals. Here, enforcing quasiperiodicity in the film may lead to unusual magnetic, tribological or adsorption properties. The third aspect concerns the effects of surface phasons and phonons on dynamical interactions with adsorbates, such as sticking coefficient, as well as on diffusion between the surface and near-surface region. The final area is tribology, where studies of quasicrystals have suggested that both adhesion and phononic friction may be important. C1 [Thiel, P. A.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. [Thiel, P. A.] Iowa State Univ, Dept Chem, Ames, IA 50011 USA. RP Thiel, PA (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA. EM thiel@ameslab.gov FU Office of Science; Basic Energy Sciences; Materials Science Division of the US Department of Energy (USDOE); Iowa State University of Science and Technology [DE-AC02-07CH11358] FX The participation of, and contributions by, Julian Ledieu, Ronan McGrath and Vincent Fournee on the discussion panel at the conference 'Quasicrystals - The Silver Jubilee' is gratefully acknowledged. Preparation of this manuscript was supported by the Office of Science, Basic Energy Sciences, Materials Science Division of the US Department of Energy (USDOE). This manuscript has been authored by Iowa State University of Science and Technology under Contract No. DE-AC02-07CH11358 with the US Department of Energy. NR 60 TC 3 Z9 3 U1 0 U2 4 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 1478-6435 EI 1478-6443 J9 PHILOS MAG JI Philos. Mag. PY 2008 VL 88 IS 13-15 BP 2123 EP 2129 DI 10.1080/14786430802186973 PG 7 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 361JK UT WOS:000260123700029 ER PT J AU de Laissardiere, GT Julien, JP Mayou, D AF de Laissardiere, G. Trambly Julien, J. -P. Mayou, D. TI Electronic transport in AlMn(Si) and AlCuFe quasicrystals: Breakdown of the semiclassical model SO PHILOSOPHICAL MAGAZINE LA English DT Article DE ab initio; quasicrystalline alloys; transport properties ID HUME-ROTHERY ALLOYS; AL-CU-FE; OPTICAL CONDUCTIVITY; ICOSAHEDRAL PHASE; WIGNER CRYSTAL; TRANSITION; APPROXIMANT; CLUSTERS; ALPDRE; DISTRIBUTIONS AB The semiclassical Bloch-Boltzmann theory is at the heart of our understanding of conduction in solids, ranging from metals to semiconductors. Physical systems that are beyond the range of applicability of this theory are thus of fundamental interest. It appears that in quasicrystals and related complex metallic alloys, a new type of breakdown of this theory operates. This phenomenon is related to the specific propagation of electrons. We develop a theory of quantum transport that applies to a normal ballistic law, and also to these specific diffusion laws. As we show, phenomenological models based on this theory describe correctly the anomalous conductivity in quasicrystals. Ab initio calculations performed on approximants also confirm the validity of this anomalous quantum diffusion scheme. This provides us with an ab initio model of transport in approximants such as alpha-AlMnSi and AlCuFe 1/1 cubic approximant. C1 [de Laissardiere, G. Trambly] Univ Cergy Pontoise, CNRS, Lab Phys Theor & Modelisat, F-95302 Cergy Pontoise, France. [Julien, J. -P.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. [Julien, J. -P.] Los Alamos Natl Lab, CNLS, Los Alamos, NM 87545 USA. [Mayou, D.] CNRS, Inst Neel, F-38042 Grenoble 9, France. [Mayou, D.] Univ Grenoble 1, F-38042 Grenoble 9, France. RP de Laissardiere, GT (reprint author), Univ Cergy Pontoise, CNRS, Lab Phys Theor & Modelisat, 2 Av A Chauvin, F-95302 Cergy Pontoise, France. EM guy.trambly@u-cergy.fr RI Trambly de Laissardiere, Guy/R-8090-2016 OI Trambly de Laissardiere, Guy/0000-0001-9065-7337 FU DGA [07.60.028.00.470.75.01] FX The work presented in this paper has been ongoing since the 1990s. Our work owes much to discussions with T. Fujiwara, J. Bellissard, J. Friedel, and N.W. Ashcroft. We are very grateful to many colleagues with whom we had collaborations during this time: C. Berger, F. Cyrot-Lackmann, J. Delahaye, T. Grenet, F. Hippert, T. Klein, L. Magaud, J. J. Prejean, P. Quemerais, S. Roche, and F. Triozon. The computations were performed at the Service Informatique Recherche (SIR), Universite de Cergy-Pontoise. Part of the numerical results were obtained by using the Condor Project (http://www.condorproject.org/). GTL thanks Y. Costes, SIR, for computing assistance. JPJ thanks the LANL group for their warm hospitality and DGA under contract 07.60.028.00.470.75.01. NR 88 TC 7 Z9 7 U1 0 U2 5 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 1478-6435 EI 1478-6443 J9 PHILOS MAG JI Philos. Mag. PY 2008 VL 88 IS 13-15 BP 2131 EP 2144 DI 10.1080/14786430801894544 PG 14 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 361JK UT WOS:000260123700030 ER PT J AU Mihalkovic, M Francoual, S Shibata, K De Boissieu, M Baron, AQR Sidis, Y Ishimasa, T Wu, D Lograsso, T Regnault, LP Gahler, F Tsutsui, S Hennion, B Bastie, P Sato, TJ Takakura, H Currat, R Tsai, AP AF Mihalkovic, M. Francoual, S. Shibata, K. De Boissieu, M. Baron, A. Q. R. Sidis, Y. Ishimasa, T. Wu, D. Lograsso, T. Regnault, L. -P. Gaehler, F. Tsutsui, S. Hennion, B. Bastie, P. Sato, T. J. Takakura, H. Currat, R. Tsai, A. -P. TI Atomic dynamics of i-ScZnMg and its 1/1 approximant phase: Experiment and simulation SO PHILOSOPHICAL MAGAZINE LA English DT Article DE quasicrystals; phonons ID ICOSAHEDRAL QUASI-CRYSTAL; RATIONAL APPROXIMANTS; LATTICE-DYNAMICS; YB; CLUSTERS; ALLOYS; SYSTEM AB Quasicrystals are long-range ordered materials that lack translational invariance so that the study of their physical properties remains a challenging problem. In order to study the respective influence of the local order and of the long-range order (periodic or quasiperiodic) on lattice dynamics, we have carried out inelastic X-ray and neutron scattering experiments on single grain samples of the Zn-Mg-Sc icosahedral quasicrystal and of the Zn-Sc periodic cubic 1/1 approximant. Besides the overall similarities and the existence of a pseudo-gap in the transverse dispersion relation, marked differences are observed, the pseudo-gap being larger and better defined in the approximant than in the quasicrystal. This can be qualitatively explained using the concept of pseudo-Brillouin zone in the quasicrystal. These results are compared to simulations on atomic models and using oscillating pair potentials, which have been fitted against ab-initio data. The simulated response function reproduces both the dispersion relation but also the observed intensity distribution in the measured spectra. The partial vibrational density of states, projected on the cluster shells, is computed from this model. C1 [Francoual, S.; De Boissieu, M.; Bastie, P.; Currat, R.] UJF, CNRS, INP Grenoble, F-38402 St Martin Dheres, France. [Mihalkovic, M.] Slovak Acad Sci, Inst Phys, Bratislava 84511, Slovakia. [Francoual, S.] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France. [Shibata, K.] Japan Atom Energy Agcy, J PARC Ctr, Naka, Ibaraki 3191195, Japan. [Baron, A. Q. R.] RIKEN, SPring 8, Sayo, Hyogo 6795143, Japan. [Baron, A. Q. R.; Tsutsui, S.] JASRI, SPring 8, Sayo, Hyogo 6795198, Japan. [Sidis, Y.; Hennion, B.] CEA Saclay, Lab Leon Brillouin, F-91191 Gif Sur Yvette, France. [Ishimasa, T.; Takakura, H.] Hokkaido Univ, Grad Sch Engn, Div Appl Phys, Sapporo, Hokkaido 0608628, Japan. [Wu, D.; Lograsso, T.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. [Regnault, L. -P.] MDN, SPSMS, DRFMC, CEA Grenoble, F-38054 Grenoble 9, France. [Gaehler, F.] Univ Stuttgart, Inst Theoret & Angew Phys, D-70550 Stuttgart, Germany. [Bastie, P.] Univ Grenoble 1, Spectrometrie Phys Lab, F-38402 St Martin Dheres, France. [Sato, T. J.] Univ Tokyo, Inst Solid State Phys, Neutron Sci Lab, Tokai, Ibaraki 3191106, Japan. [Tsai, A. -P.] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan. [Tsai, A. -P.] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050044, Japan. RP De Boissieu, M (reprint author), UJF, CNRS, INP Grenoble, BP 75, F-38402 St Martin Dheres, France. EM marc.de-boissieu@ltpcm.inpg.fr RI Takakura, Hiroyuki/D-6146-2012; Ishimasa, Tsutomu/F-4509-2010; Sato, Taku/I-7664-2015 OI Sato, Taku/0000-0003-2511-4998 FU CNRS; Complex Metallic Alloys European network [NMP3-CT-2005-500140]; [VEGA2-5096/27]; [APVV-0413-06] FX We acknowledge the LLB, ILL and Spring-8 facilities for the allocation of beam time. MM acknowledges support from the CNRS while staying at the SIMaP, and from grants VEGA2-5096/27 and APVV-0413-06. Part of this work has been supported by the Complex Metallic Alloys European network, No. NMP3-CT-2005-500140. NR 31 TC 6 Z9 6 U1 0 U2 11 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 1478-6435 J9 PHILOS MAG JI Philos. Mag. PY 2008 VL 88 IS 13-15 BP 2311 EP 2318 DI 10.1080/14786430802077909 PG 8 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 361JK UT WOS:000260123700048 ER PT J AU Yu-Zhang, K Embury, JD Han, K Misra, A AF Yu-Zhang, K. Embury, J. D. Han, K. Misra, A. TI Transmission electron microscopy investigation of the atomic structure of interfaces in nanoscale Cu-Nb multilayers SO PHILOSOPHICAL MAGAZINE LA English DT Article DE multilayer; CulNb; deformation; nanostructure; lattice distortion; orientation relationship ID NANOLAYERED COMPOSITES; METALLIC MULTILAYERS; DEFORMATION; MICROSTRUCTURE; STABILITY; STRENGTH AB Multilayers of Cu-Nb have been grown on a Nb seed layer on a Si (100) substrate using a magnetron sputtering technique. The bilayer period (Lambda) was varied from 10 to 2.4 nm. Cross-sectional transmission electron microscopy (XTEM) and high-resolution TEM (HRTEM) were used to study the detailed structure as a function of the bilayer period. Although the majority of the structures conformed to a Kurdjumov-Sachs (K-S) orientation relationship between the Cu and Nb layers, the structures exhibit considerable spatial variation. In some local regions, a Nishiyama-Wasserman (N-W) orientation relationship was found. In addition, considerable distortions were observed in both the Cu and Nb regions close to the interface. Using both HRTEM imaging and fast Fourier transform (FFT) of HRTEM images, early stage of the fcc to bcc transition in Cu was detected. The results suggest that, in multilayer structures, the detailed structure of the interface and large local distortions may play an important role in interface-controlled plasticity. C1 [Yu-Zhang, K.] Univ Reims, Dept Phys, Lab Microscopies & Etud Nanostruct, F-51687 Reims 02, France. [Embury, J. D.] McMaster Univ, Dept Mat Sci & Engn, Hamilton, ON L8S 4L7, Canada. [Han, K.] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA. [Misra, A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Embury, JD (reprint author), Univ Reims, Dept Phys, Lab Microscopies & Etud Nanostruct, BP 1039, F-51687 Reims 02, France. EM emburyd@mcmaster.ca RI Misra, Amit/H-1087-2012 FU DOE, Office of Science and Office of Basic Energy Sciences FX This research was supported by the DOE, Office of Science and Office of Basic Energy Sciences. The authors thank R. G. Hoagland (Los Alamos) and A. Rollett (CMU) for valuable discussions. NR 26 TC 21 Z9 21 U1 0 U2 19 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 1478-6435 J9 PHILOS MAG JI Philos. Mag. PY 2008 VL 88 IS 17 BP 2559 EP 2567 DI 10.1080/14786430802380485 PG 9 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 376GP UT WOS:000261172400003 ER PT J AU von Bergmann, K Bode, M Kubetzka, A Pietzsch, O Vedmedenko, EY Wiesendanger, R AF von Bergmann, K. Bode, M. Kubetzka, A. Pietzsch, O. Vedmedenko, E. Y. Wiesendanger, R. TI Complex magnetic order on the atomic scale revealed by spin-polarized scanning tunnelling microscopy SO PHILOSOPHICAL MAGAZINE LA English DT Article DE spin-polarized scanning tunnelling microscopy (SP-STM); vacuum tunnelling ID FE AB A fundamental understanding of magnetic phenomena requires the determination of spin structures down to the atomic scale. The direct visualization of atomic-scale spin structures has been accomplished by combining the atomic resolution capability of Scanning Tunnelling Microscopy (STM) with spin sensitivity, based on vacuum tunnelling of spin-polarized electrons. The resulting technique, Spin-Polarized Scanning Tunnelling Microscopy (SP-STM), nowadays provides unprecedented insight into collinear and non-collinear spin structures at surfaces of magnetic nanostructures and has already led to the discovery of new types of magnetic order at the nanometre scale. Several examples of complex magnetic order as revealed by atomic-resolution SP-STM will be reviewed. C1 [von Bergmann, K.; Kubetzka, A.; Pietzsch, O.; Vedmedenko, E. Y.; Wiesendanger, R.] Univ Hamburg, Inst Appl Phys, D-20355 Hamburg, Germany. [Bode, M.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. RP Wiesendanger, R (reprint author), Univ Hamburg, Inst Appl Phys, Jungiusstr 11, D-20355 Hamburg, Germany. EM rwiesend@physnet.uni-hamburg.de RI Wiesendanger, Roland/P-9726-2016; Bode, Matthias/S-3249-2016; von Bergmann, Kirsten/S-5696-2016 OI Wiesendanger, Roland/0000-0002-0472-4183; Bode, Matthias/0000-0001-7514-5560; von Bergmann, Kirsten/0000-0002-4514-3254 FU Deutsche Forschungsgemeinschaft (SFB 668); Stifterverband fur die Deutsche Wissenschaft; Interdisciplinary Nanoscience Center Hamburg (INCH) FX We would like to thank M. Heide, G. Bihlmayer, S. Blugel, P. Ferriani, S. Heinze, L. Udvardi, and P. Weinberger for their contributions to the theoretical understanding of our experimental SP-STM data.; Financial support of the Deutsche Forschungsgemeinschaft (SFB 668), the Stifterverband fur die Deutsche Wissenschaft and the Interdisciplinary Nanoscience Center Hamburg (INCH) is gratefully acknowledged. NR 19 TC 6 Z9 6 U1 1 U2 14 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 1478-6435 J9 PHILOS MAG JI Philos. Mag. PY 2008 VL 88 IS 18-20 BP 2627 EP 2642 AR PII 901895757 DI 10.1080/14786430802337097 PG 16 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 376GQ UT WOS:000261172500005 ER PT J AU Smith, JL Lashley, JC Volz, HM Fisher, RA Riseborough, PS AF Smith, J. L. Lashley, J. C. Volz, H. M. Fisher, R. A. Riseborough, P. S. TI Thermodynamics and superconductivity of the Th7(Fe, Ru, Os, Co, Rh, Ir)3 system SO PHILOSOPHICAL MAGAZINE LA English DT Article DE thorium; superconductivity; Th7Fe3; pressure ID HEAT; FE; TH AB Expanding the temperature range of previous specific-heat measurements on the Th7(Fe, Ru, Os, Co, Rh, Ir)3 system, we measure the effect of transition-metal substitution on total entropy ([image omitted]), electronic specific heat (), and Debye temperature (D). In addition we measure the pressure dependence, up to 10 kbar, of the superconducting transition. C1 [Smith, J. L.; Lashley, J. C.; Volz, H. M.; Fisher, R. A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Riseborough, P. S.] Temple Univ, Dept Phys, Philadelphia, PA 19122 USA. RP Smith, JL (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM jlsmith@lanl.gov FU United States Department of Energy FX This work was performed under the auspices of the United States Department of Energy. NR 13 TC 4 Z9 4 U1 0 U2 9 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 1478-6435 J9 PHILOS MAG JI Philos. Mag. PY 2008 VL 88 IS 18-20 BP 2847 EP 2850 AR PII 902471663 DI 10.1080/14786430802389197 PG 4 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 376GQ UT WOS:000261172500025 ER PT J AU Yao, Z Hernandez-Mayoral, M Jenkins, ML Kirk, MA AF Yao, Z. Hernandez-Mayoral, M. Jenkins, M. L. Kirk, M. A. TI Heavy-ion irradiations of Fe and Fe-Cr model alloys Part 1: Damage evolution in thin-foils at lower doses SO PHILOSOPHICAL MAGAZINE LA English DT Article DE radiation damage; FeCr alloys; in situ TEM AB The evolution of radiation damage in Fe and Fe-Cr alloys under heavy-ion irradiation was investigated using transmission electron microscopy. Thin foils were irradiated with 100 or 150 keV Fe+ and Xe+ ions at room temperature (RT) and 300 degrees C. Dynamic observations followed the evolution of damage and the early stages in damage development are reported. Small (2-5 nm) dislocation loops first appeared at doses between 10(16) and 10(17) ions m(-2) in all materials. Loop number densities depended strongly on the foil orientation in pure Fe but not in Fe-Cr alloys. Number densities did not depend strongly on Cr content. For a given material, defect yields were higher for Xe+ ions than for Fe+ ions, and were higher at RT than at 300 degrees C. Loops with both < 100 > and 1/2 < 111 > Burgers vectors were identified. The proportion of < 100 > loops was larger, especially in pure Fe. Dynamic observations showed that: the contrast of some new loops developed over intervals as long as 0.2 s; hopping of 1/2 < 111 > loops was induced by the ion and electron beams and was pronounced in ultra-pure iron; and many loops were lost during and after ion irradiation by glide to the foil surface. The number of loops retained was strongly dependent on the foil orientation in Fe, but less so in Fe-Cr alloys. This is due to lower loop mobility in Fe-Cr alloys, probably due to pinning by Cr atoms. Reduced loop loss probably explains the higher loop number densities in Fe-Cr alloys compared with pure Fe. C1 [Yao, Z.; Jenkins, M. L.] Univ Oxford, Dept Mat, Oxford OX1 3PH, England. [Hernandez-Mayoral, M.] CIEMAT, Div Mat, E-28040 Madrid, Spain. [Kirk, M. A.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Jenkins, ML (reprint author), Univ Oxford, Dept Mat, Parks Rd, Oxford OX1 3PH, England. EM mike.jenkins@materials.ox.ac.uk RI Hernandez Mayoral, Mercedes/F-8985-2016 OI Hernandez Mayoral, Mercedes/0000-0003-4504-7577 FU US DOE Office of Science and operated [DE-AC02-06CH11357]; UKAEA, Culham Science Centre FX The IVEM-Tandem Facility (within the Electron Microscopy Center at ANL) is supported by the US DOE Office of Science and operated under contract no. DE-AC02-06CH11357 by UChicago Argonne, LLC. We thank Dr. A. Liu and P. Baldo of Argonne National Lab for their help in using this facility. Part of this work was funded by the UKAEA, Culham Science Centre. We thank Prof. J. Le Coze of the Ecole de Mines de Saint Etienne for the provision of UHP iron. We are grateful to Dr. S.L. Dudarev, Dr. C.A. English and M. Gilbert for helpful discussions. NR 43 TC 87 Z9 87 U1 5 U2 28 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 1478-6435 J9 PHILOS MAG JI Philos. Mag. PY 2008 VL 88 IS 21 BP 2851 EP 2880 DI 10.1080/14786430802380469 PG 30 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 376GR UT WOS:000261172600001 ER PT J AU Hernandez-Mayoral, M Yao, Z Jenkins, ML Kirk, MA AF Hernandez-Mayoral, M. Yao, Z. Jenkins, M. L. Kirk, M. A. TI Heavy-ion irradiations of Fe and Fe-Cr model alloys Part 2: Damage evolution in thin-foils at higher doses SO PHILOSOPHICAL MAGAZINE LA English DT Article DE radiation damage; heavy-ion irradiation; FeCr alloys; in-situ TEM ID DISPLACEMENT CASCADES; DISLOCATION LOOPS; DEFECT CLUSTERS; ALPHA-IRON; MICROSTRUCTURE; ACCUMULATION; DEFORMATION; COPPER AB A study of heavy-ion damage in Fe and Fe-Cr alloys started in Part 1 [1] was continued with an investigation of damage development in UHP Fe and Fe-8%Cr at higher doses up to 2 x 10(19) ions m(-2) (similar to 13 dpa). In thin-foil irradiations with 150 keV Fe(1) ions at 300 degrees C and room temperature (RT), more complex microstructures started to develop in thicker regions of the foils at doses greater than about 2 x 10(18) ions m(-2), apparently involving cooperative interaction, alignment and coalescence of smaller loops. First strings of loops all with the same 1/2 < 111 > Burgers vectors formed. In UHP Fe irradiated at 300 degrees C the damage then developed into colonies of resolvable interstitial loops with 1/2 < 111 > Burgers vectors. By a dose of 2 x 10(19) ions m(-2), large (several hundred nanometre) finger-shaped loops with large shear components had developed by the growth and subsequent coalescence of smaller loops. Similar but finer-scale damage structures developed in UHP Fe irradiated at RT and in Fe-8% Cr irradiated at both RT and 300 degrees C. C1 [Yao, Z.; Jenkins, M. L.] Univ Oxford, Dept Mat, Oxford OX1 3PH, England. [Hernandez-Mayoral, M.] CIEMAT, Div Mat, E-28040 Madrid, Spain. [Kirk, M. A.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Jenkins, ML (reprint author), Univ Oxford, Dept Mat, Parks Rd, Oxford OX1 3PH, England. EM mike.jenkins@materials.ox.ac.uk RI Hernandez Mayoral, Mercedes/F-8985-2016 OI Hernandez Mayoral, Mercedes/0000-0003-4504-7577 FU US DOE Office of Science and operated [DE-AC02-06CH11357]; UKAEA, Culham Science Centre; European Commission FX The IVEM-Tandem Facility (within the Electron Microscopy Center at ANL) is supported by the US DOE Office of Science and operated under contract no. DE-AC02-06CH11357 by UChicago Argonne, LLC. We thank Dr. A. Liu and P Baldo of Argonne National Lab for their help in using this facility. Part of this work was funded by the UKAEA, Culham Science Centre. Ex situ experiments on UHP Fe were supported by the European Commission in the framework of the PERFECT Project. We also thank Prof. J. Le Coze of the Ecole de Mines de Saint Etienne for the provision of UHP iron and Prof S. G. Roberts and Dr. S. L. Dudarev for helpful discussions. NR 17 TC 50 Z9 50 U1 2 U2 19 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 1478-6435 J9 PHILOS MAG JI Philos. Mag. PY 2008 VL 88 IS 21 BP 2881 EP 2897 DI 10.1080/14786430802380477 PG 17 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 376GR UT WOS:000261172600002 ER PT J AU Cherkaoui, M Soulami, A Zeghloul, A Khaleel, MA AF Cherkaoui, M. Soulami, A. Zeghloul, A. Khaleel, M. A. TI A phenomenological dislocation theory for martensitic transformation in ductile materials: From micro- to macroscopic description SO PHILOSOPHICAL MAGAZINE LA English DT Article DE micromechanics; viscoplastic model; martensitic transformation; yield surfaces; TRIP steels ID STAINLESS-STEEL; PHASE-TRANSFORMATIONS; TRIP STEELS; STRAIN-RATE; DEFORMATION; PLASTICITY; BEHAVIOR; METALS; FCC; NANOCRYSTALLINE AB An extension of the classical phenomenological dislocation theory U.F. Kocks and H. Mecking, Prog. Mater. Sci. 48 (2003) p. 171, Y. Estrin, J. Mater. Processing Technol. 80-81 (1998) p. 33 is proposed to develop a viscoplastic constitutive equation for steels undergoing (') martensitic phase transformation. Such a class of metallic material exhibits an additional inelastic strain resulting from the phase transformation itself and from the plastic accommodation in parent (austenite) and product (martensite) phases due to different sources of internal stresses. This inelastic strain, known as the transformation-induced plasticity (TRIP) strain, enhances ductility at an appropriate strength level due to the typical properties of martensite. The principal features of martensitic transformation at different scales are discussed and a macroscopic model derived from microscopic considerations. The material is considered as a combination of two viscoplastic phases, where the martensitic one is considered as a strengthening phase with evolving volume fraction. The methodology consists of two parts: a combination of two kinetics laws, which describe the material response at a given microstructure with the corresponding evolution equations of the appropriate internal variables and provide the constitutive equation of the two phases; a viscoplastic self-consistent homogenization technique that provides the constitutive equation of the two-phase composite material. The model could be regarded as a semi-phenomenological approach with sufficient link between microstructure and overall properties, and therefore with good predictive capabilities. Its simplicity allows a modular structure for its implementation in metal forming codes. C1 [Cherkaoui, M.] Georgia Inst Technol, George W Woodruff Sch Mech Engn, GT CNRS UMI 2958, Atlanta, GA 30332 USA. [Soulami, A.; Zeghloul, A.] Univ Metz, LPMM, CNRS, Metz, France. [Khaleel, M. A.] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Cherkaoui, M (reprint author), Georgia Inst Technol, George W Woodruff Sch Mech Engn, GT CNRS UMI 2958, Atlanta, GA 30332 USA. EM mcherkaoui@me.gatech.edu OI khaleel, mohammad/0000-0001-7048-0749 NR 30 TC 7 Z9 7 U1 1 U2 13 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 1478-6435 J9 PHILOS MAG JI Philos. Mag. PY 2008 VL 88 IS 30-32 BP 3479 EP 3512 AR PII 793546788 DI 10.1080/14786430802043646 PG 34 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 385GZ UT WOS:000261804000003 ER PT J AU Deng, J El-Azab, A Larson, BC AF Deng, J. El-Azab, A. Larson, B. C. TI On the elastic boundary value problem of dislocations in bounded crystals SO PHILOSOPHICAL MAGAZINE LA English DT Article DE defects in solids; deformation mechanisms; dislocation dynamics; dislocation mechanics; dislocation theory ID RAY STRUCTURAL MICROSCOPY; IMAGE STRESS; FREE-SURFACE; DYNAMICS; STRAIN; SIMULATIONS; PLASTICITY; RESOLUTION; BEHAVIOR; FORCES AB A new formulation of the elastic boundary value problem of dislocations in bounded crystals is developed. This formulation is based on the ansatz that the stress field of dislocations in bounded domains can be constructed as the sum of a contribution corresponding to the classical infinite-domain solution plus a correction that is determined here from a mathematically well posed problem. The formulation of the elastic boundary value problem given here ensures that the equilibrium of the overall stress field is rigorously satisfied, specifically when dislocations intersect the boundary. The implications of this new formalism for dislocation dynamics simulation are discussed for the cases of bounded crystals and crystal volumes representative of uniformly loaded infinite crystals. An approximate computational solution of the elastic boundary value problem is presented based on the concept of virtual dislocations and the use of a non-singular form of the infinite-domain solution of the dislocation stress field. This computational solution addresses the issues of singularity and global equilibrium of the boundary traction associated with the corrective field. Sample results are presented for the internal stress in bounded crystals containing 3D dislocation configurations produced using the dislocation dynamics simulation method. The results illustrate the statistical character of the internal elastic field. C1 [Deng, J.; El-Azab, A.] Florida State Univ, Dept Mech Engn, Tallahassee, FL 32306 USA. [El-Azab, A.] Florida State Univ, Sch Computat Sci, Tallahassee, FL 32306 USA. [Larson, B. C.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN USA. RP El-Azab, A (reprint author), Florida State Univ, Dept Mech Engn, Tallahassee, FL 32306 USA. EM anter@eng.fsu.edu FU Florida State University [4000058790]; Department of Energy; Office of Science; Division of Materials Sciences and Engineering FX AE and JD were supported in part by UT-Battelle LLC subcontract # 4000058790 at Florida State University. BL was supported by the Department of Energy, Office of Science, Division of Materials Sciences and Engineering. AE wishes to thank the ParaDiS code team of Lawrence Livermore National Laboratory for making the code available for use during the course of this study. NR 31 TC 12 Z9 12 U1 1 U2 8 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 1478-6435 J9 PHILOS MAG JI Philos. Mag. PY 2008 VL 88 IS 30-32 BP 3527 EP 3548 AR PII 906930865 DI 10.1080/14786430802558544 PG 22 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 385GZ UT WOS:000261804000005 ER PT J AU Chen, G Fenimore, PW Frauenfelder, H Mezei, F Swenson, J Young, RD AF Chen, G. Fenimore, P. W. Frauenfelder, H. Mezei, F. Swenson, J. Young, R. D. TI Protein fluctuations explored by inelastic neutron scattering and dielectric relaxation spectroscopy SO PHILOSOPHICAL MAGAZINE LA English DT Article; Proceedings Paper CT 11th International Workshop on Complex Systems CY MAR 17-20, 2008 CL Andalo, ITALY SP Univ Trento, Dipartimento Fis, INFM CNR SOFT, Off Naval Res DE protein dynamics; hydration shell; beta fluctuations; inelastic neutron scattering; dielectric relaxation spectroscopy; no dynamical transitions ID MYOGLOBIN; DYNAMICS; TRANSITION; MOLECULES; GLASSES; SOLVENT; MOTIONS AB Glasses, supercooled liquids and proteins share common properties, in particular the existence of an energy landscape and the presence of two types of fluctuations, alpha and beta. While the effect of alpha fluctuations on proteins has been known for a few years, the effect of beta fluctuations has not been fully understood. By comparing neutron-scattering data on the protein myoglobin with beta fluctuations in the hydration shell measured by dielectric relaxation spectroscopy, we show that the internal protein motions are slaved to these fluctuations. We also show that there is no 'dynamical transition' in proteins near 200 K. The rapid increase in the mean-square displacement with temperature in many neutron-scattering experiments can be quantitatively predicted by beta fluctuations in the hydration shell. C1 [Chen, G.; Fenimore, P. W.; Frauenfelder, H.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. [Mezei, F.] Los Alamos Natl Lab, LANSCE, Los Alamos, NM USA. [Swenson, J.] Chalmers, Dept Appl Phys, S-41296 Gothenburg, Sweden. [Young, R. D.] No Arizona Univ, Dept Phys & Astron, Flagstaff, AZ 86011 USA. RP Frauenfelder, H (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. EM frauenfelder@lanl.gov NR 14 TC 25 Z9 25 U1 2 U2 14 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 1478-6435 J9 PHILOS MAG JI Philos. Mag. PY 2008 VL 88 IS 33-35 BP 3877 EP 3883 DI 10.1080/14786430802585117 PG 7 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 385HA UT WOS:000261804100002 ER PT J AU Ertekin, E Daw, MS Chrzan, DC AF Ertekin, E. Daw, M. S. Chrzan, D. C. TI Elasticity theory of topological defects in carbon nanotubes and graphene SO PHILOSOPHICAL MAGAZINE LETTERS LA English DT Article ID 90-DEGREES PARTIAL DISLOCATION; TOTAL-ENERGY CALCULATIONS; STONE-WALES DEFECTS; WAVE BASIS-SET; AB-INITIO; GRADIENT ELASTICITY; SEMICONDUCTORS; DEFORMATIONS; METALS; CORE AB We develop elasticity theory to predict the energies of topological defects in carbon nanostructures. The theory is a simple, quantitatively accurate and transferable continuum approach to predicting defect formation energies that obviates the need for computationally expensive quantum mechanical methods. Thus the theory has the potential to serve as the basis for thermodynamic and multi-scale modelling of the structural properties of carbon nanostructures. C1 [Ertekin, E.; Chrzan, D. C.] Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Mat Sci & Engn, Mat Sci Div, Berkeley, CA 94720 USA. [Daw, M. S.] Clemson Univ, Dept Phys & Astron, Clemson, SC 29634 USA. RP Chrzan, DC (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Mat Sci & Engn, Mat Sci Div, Berkeley, CA 94720 USA. EM dcchrzan@berkeley.edu RI Ertekin, Elif/D-6764-2013 NR 44 TC 8 Z9 8 U1 1 U2 7 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0950-0839 J9 PHIL MAG LETT JI Philos. Mag. Lett. PY 2008 VL 88 IS 2 BP 159 EP 167 DI 10.1080/09500830701822104 PG 9 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 260CT UT WOS:000252989100008 ER PT J AU Song, S Wang, J Wang, R Xiong, D Zhao, D Gui, J Liu, H Yan, Y AF Song, S. Wang, J. Wang, R. Xiong, D. Zhao, D. Gui, J. Liu, H. Yan, Y. TI Structure of Al-Co-Ni pentagonal quasicrystal studied by HAADF-STEM and ab initio calculations SO PHILOSOPHICAL MAGAZINE LETTERS LA English DT Article DE HAADF-STEM; quasicrystals; total energy methods; transmission electron microscopy ID TRANSMISSION ELECTRON-MICROSCOPY; MOLECULAR-DYNAMICS; AL72NI20CO8; LATTICE; MODEL; APPROXIMANTS; SYMMETRY; CLUSTERS; ALCHEMI; METALS AB Using a combination of atomic-resolution high-angle annular dark-field (HAADF) Z-contrast imaging and ab initio calculations, atomic models of clusters 2 nm in diameter and 0.8 nm in height are proposed for the Al-Co-Ni pentagonal quasicrystal. This quasicrystal has 5-fold symmetry (the so-called 5f state) without superstructures, and is one of numerous modifications of the Al-Co-Ni decagonal quasicrystal. HAADF results reveal that the two-dimensional quasi-periodic lattice contains mainly Penrose pentagonal tiling. The centres within the decorated pentagonal tiles, i.e. the so-called pentagonal super-clusters, show structural characteristics having both a satellite-orbit shape and a pentagon-symmetry shape. The proposed atomic models, based directly on the HAADF images, are subjected to ab initio total energy calculations. After relaxation, the calculations demonstrate that the models with 5-fold symmetry are energetically more favourable than those with 10-fold symmetry. C1 [Song, S.; Wang, J.; Wang, R.; Xiong, D.; Zhao, D.; Gui, J.; Liu, H.] Wuhan Univ, Minist Educ, Dept Phys, Wuhan 430072, Peoples R China. [Song, S.; Wang, J.; Wang, R.; Xiong, D.; Zhao, D.; Gui, J.; Liu, H.] Wuhan Univ, Minist Educ, Key Lab Acoust & Photon Mat & Devices, Wuhan 430072, Peoples R China. [Song, S.; Wang, J.; Wang, R.; Xiong, D.; Zhao, D.; Gui, J.] Wuhan Univ, Ctr Electron Microscopy, Wuhan 430072, Peoples R China. [Yan, Y.] Natl Renewable Energy Lab, Golden, CO USA. RP Wang, J (reprint author), Wuhan Univ, Minist Educ, Dept Phys, Wuhan 430072, Peoples R China. EM wang@whu.edu.cn RI Wang, Jianbo/D-9991-2011 OI Wang, Jianbo/0000-0002-3315-3105 NR 44 TC 1 Z9 1 U1 1 U2 4 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0950-0839 J9 PHIL MAG LETT JI Philos. Mag. Lett. PY 2008 VL 88 IS 7 BP 519 EP 531 DI 10.1080/09500830802272050 PG 13 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 335BJ UT WOS:000258265500006 ER PT J AU Barabash, R Gao, YF Sun, YN Lee, SY Choo, H Liaw, PK Brown, DW Ice, GE AF Barabash, Rozaliya Gao, Yanfei Sun, Yinan Lee, Soo Yeol Choo, Hahn Liaw, Peter K. Brown, Donald W. Ice, Gene E. TI Neutron and X-ray diffraction studies and cohesive interface model of the fatigue crack deformation behavior SO PHILOSOPHICAL MAGAZINE LETTERS LA English DT Article DE crack growth; dislocations; FEM; neutron diffraction; X-ray diffraction ID RANGE INTERNAL-STRESSES; COPPER SINGLE-CRYSTALS; GROWTH-BEHAVIOR; PLASTIC-DEFORMATION; SUBSTRUCTURE-ANALYSIS; RESIDUAL-STRESS; ROCKING-CURVE; TENSILE; ALLOY; MICROSTRUCTURE AB The crack-tip deformation behavior during a single overload, fatigue test of ferritic stainless steel, and Ni-based HAYNES 230 superalloy is studied at different structural levels using (1) neutron-diffraction, from which both the elastic-lattice strain and volume-averaged total dislocation densities are obtained, (2) polychromatic X-ray microdiffraction to probe the geometrically necessary dislocations and boundaries distribution, and (3) an irreversible and hysteretic cohesive interface model which has been implemented into a finite element framework to simulate the stress/strain evolution near the fatigue crack tip. Neutron strain measurements and finite element simulations are in qualitative agreement on the macroscopic length scale. Large plastic deformation induced by the overload and the resulting compressive residual strains are observed in front of the crack tip after the overload, and are the principal reason for the fatigue-crack-growth retardation. Strong strain gradients surrounding the crack propagation result in the formation of a high density of geometrically necessary dislocations near the fractured surface and cause local lattice rotations on the submicron level. C1 [Barabash, Rozaliya; Choo, Hahn; Ice, Gene E.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA. [Barabash, Rozaliya] Univ Tennessee, Ctr Mat Proc, Knoxville, TN USA. [Gao, Yanfei; Sun, Yinan; Lee, Soo Yeol; Choo, Hahn; Liaw, Peter K.] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA. [Gao, Yanfei] Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN USA. [Brown, Donald W.] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. RP Barabash, R (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA. EM barabashr@ornl.gov RI Gao, Yanfei/F-9034-2010; Choo, Hahn/A-5494-2009 OI Gao, Yanfei/0000-0003-2082-857X; Choo, Hahn/0000-0002-8006-8907 FU NSF International Materials Institutes (IMI) Program [DMR 0231320]; UT-Battelle, LLC [DE-AC05-00OR22725] FX The authors would like to acknowledge the financial supports from the NSF International Materials Institutes (IMI) Program (DMR 0231320). Research at Oak Ridge National Laboratory is sponsored by the Division of Materials Sciences and Engineering, Office of Basic Energy Sciences, U. S. Department of Energy, under Contract DE-AC05-00OR22725 with UT-Battelle, LLC. NR 54 TC 13 Z9 13 U1 2 U2 14 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0950-0839 J9 PHIL MAG LETT JI Philos. Mag. Lett. PY 2008 VL 88 IS 8 BP 553 EP 565 DI 10.1080/09500830802311080 PG 13 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 341BB UT WOS:000258688100001 ER PT J AU Jeong, IK Darling, TW Heffner, RH Llobet, A Lashley, JC AF Jeong, I. -K. Darling, T. W. Heffner, R. H. Llobet, A. Lashley, J. C. TI Neutron diffraction study on gamma <-> alpha phase transition in Ce(0.9)Th(0.1) alloy SO PHILOSOPHICAL MAGAZINE LETTERS LA English DT Article DE gamma-alpha phase transition; neutron diffraction; Debye temperature; vibrational entropy ID CERIUM AB Comprehensive neutron diffraction measurements were performed to study the isostructural phase transition in Ce(0.9)Th(0.1) alloy. Using Rietveld refinements, we obtained lattice and thermal parameters as a function of temperature. From the temperature slope of the thermal parameters, we determined Debye temperatures Theta(gamma)(D)=133(1) K and Theta(alpha)(D)=140(1) K for the gamma phase and the phase, respectively. This result implies that the vibrational entropy change is not significant at the gamma <-> alpha transition, contrary to that from elemental Cerium [I.-K. Jeong, T.W. Darling, M.J. Graf et al., Phys. Rev. Lett. 92 (2004) p.105702]. C1 [Jeong, I. -K.] Pusan Natl Univ, Ctr Dielect & Adv Matter Phys, Pusan, South Korea. [Darling, T. W.] Univ Nevada, Dept Phys, Reno, NV 89557 USA. [Darling, T. W.] Univ Nevada, Nevada Terawatt Facil, Reno, NV 89557 USA. [Heffner, R. H.; Llobet, A.; Lashley, J. C.] Los Alamos Natl Lab, Los Alamos, NM USA. RP Jeong, IK (reprint author), Pusan Natl Univ, Ctr Dielect & Adv Matter Phys, Pusan, South Korea. EM jeong@pusan.ac.kr RI Llobet, Anna/B-1672-2010 FU Pusan National University Research Grant; DOE Office of Basic Energy Sciences FX I.-K. Jeony acknowledges that this work was supported for 2 years by Pusan National University Research Grant. Neutron diffraction measurements have benefitted from the use of HIPD at the Lujan Center at Los Alamos Neutron Science Center, funded by DOE Office of Basic Energy Sciences. NR 22 TC 2 Z9 2 U1 0 U2 1 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0950-0839 J9 PHIL MAG LETT JI Philos. Mag. Lett. PY 2008 VL 88 IS 8 BP 607 EP 613 DI 10.1080/09500830802348058 PG 7 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA 341BB UT WOS:000258688100007 ER PT S AU Plawski, T Allison, T Bachimanchi, R Dong, H Hovater, C Musson, J AF Plawski, T. Allison, T. Bachimanchi, R. Dong, H. Hovater, C. Musson, J. BE Romaniuk, RS Wolinski, TR TI New RF Control System for the 12 GeV Energy Upgrade of the CEBAF Accelerator at Jefferson Lab SO PHOTONICS APPLICATIONS IN ASTRONOMY, COMMUNICATIONS, INDUSTRY, AND HIGH-ENERGY PHYSICS EXPERIMENTS 2008 SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2008 CY MAY 28-JUN 01, 2008 CL Wilga, POLAND SP PERG & ELHEP Lab, Inst Elect Syst, FE&IT, Warsaw Univ Technol, Photon Soc Poland, Fac Elect & Informat Technol, Comm Elect & Telecommun, Polish Acad Sci, Polish Comm Optoelect, Assoc Polish Elect Engineers, Soltan Inst Nucl Studies, IEEE Poland Sect & IEEE Region 8, SPIE, Inter-Assoc Comm Elect, Telecomm & Informat Technol, Assoc Polish Mech Engineers AB The CEBAF Accelerator at Jefferson Lab presently consists of 50 MeV injector, two anti-parallel superconducting linacs and two arcs for transporting beam between the linacs. By the mid-1990s, the accelerator was providing electrons up to 5.75 GeV. The 12 GeV Upgrade is a major accelerator project aimed at doubling the energy by adding 10 (five per linac) new high gradient cryomodules, each providing 100 MY of field. The new cryomodule will consist of eight 7-cell superconducting cavities operating at an average accelerating gradient of 19.5 MV/m and with an external Q = 3.2 . 10(7) The high gradient, very high quality factor and large Lorentz detuning coefficient (K(L) up to 4) pose significant challenges beyond what the present analog low level RF (LLRF) control systems can handle reliably; therefore, a new digital LLRF control system has been developed. The main highlights of the new RF Control system include: a RF front-end with low temperature drift and good linearity, a large FPGA platform for digital signal processing, an EPICS Input Output Computer (IOC) using a PC-l 04 and a digital Self Exciting Loop (SEL) based algorithm. This paper provides an overview of the 6 GeV and 12 GeV Upgrade CEBAF machines, a summary of sources of cavity field variation that drive LLRF system performance, and discusses recent developments and progress in Jefferson Lab's new LLRF system design. C1 [Plawski, T.; Allison, T.; Bachimanchi, R.; Dong, H.; Hovater, C.; Musson, J.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. RP Plawski, T (reprint author), Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. NR 10 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 978-0-8194-7358-5 J9 PROC SPIE PY 2008 VL 7124 AR 71240J DI 10.1117/12.817948 PG 11 WC Astronomy & Astrophysics; Crystallography; Engineering, Electrical & Electronic; Optics; Physics, Particles & Fields SC Astronomy & Astrophysics; Crystallography; Engineering; Optics; Physics GA BXG30 UT WOS:000296026200018 ER PT S AU del Cueto, JA Rummel, S Kroposki, B Anderberg, A AF del Cueto, J. A. Rummel, S. Kroposki, B. Anderberg, A. BE von Roedern, B Delahoy, AE TI Long-Term Performance Data and Analysis of CIS/CIGS Modules Deployed Outdoors SO PHOTOVOLTAIC CELL AND MODULE TECHNOLOGIES II SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Photovoltaic Cell and Module Technologies II CY AUG 10-11, 2008 CL San Diego, CA DE Long-term performance; reliability; photovoltaic modules; CIS; CIGS ID FILM SOLAR-CELLS; DAMP HEAT AB The long-term performance data of copper indium diselenide (CIS) and gallium-alloyed CIS (CIGS) photovoltaic (PV) modules are investigated to assess the reliability of this technology. We study and report on numerous PV modules acquired from two manufacturers (A and B), deployed at NREL's outdoor test facility (OTF) in various configurations in the field: some are free standing, loaded with a fixed resistance and periodically tested indoors at STC; other modules are connected to data acquisition systems with their performance continuously monitored. Performance is characterized using current-voltage (IN) measurements obtained either at standard test conditions or under real-time monitoring conditions: the power parameters plus other factors relating to quality like diode quality factors or series resistance are analyzed for changes against time. Using standard diode analysis to determine the sources of degradation indicates that CIS modules can exhibit between moderate and negligible degradation, with the dominant loss mode being fill factor declines along with decreases in open-circuit voltage, for illumination intensities near 1-sun. At lower intensities, current losses can appear appreciable. The real-time performance data also indicate that fill factor loss is the primary degradation mode, generally as a result of increases in series resistance. C1 [del Cueto, J. A.; Rummel, S.; Kroposki, B.; Anderberg, A.] NREL, Golden, CO 80401 USA. RP del Cueto, JA (reprint author), NREL, 1617 Cole Blvd, Golden, CO 80401 USA. NR 10 TC 2 Z9 2 U1 1 U2 6 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-7265-6 J9 PROC SPIE PY 2008 VL 7045 AR 704504 DI 10.1117/12.796505 PG 11 WC Energy & Fuels; Instruments & Instrumentation; Optics SC Energy & Fuels; Instruments & Instrumentation; Optics GA BIN19 UT WOS:000260995600004 ER PT J AU Guo, XF Evans, JW Liu, DH AF Guo, Xiaofang Evans, J. W. Liu, Da-Hang TI Generic two-phase coexistence, relaxation kinetics, and interface propagation in the quadratic contact process: Analytic studies SO PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS LA English DT Article DE quadratic contact process; generic two-phase coexistence; master equations; truncation; discrete reaction diffusion equations; interface propagation ID SURFACE-REACTION MODEL; PHASE-TRANSITIONS; SEQUENTIAL ADSORPTION; SYSTEMS; FAILURE AB The quadratic contact process is implemented as an adsorption-desorption model on a two-dimensional square lattice. The model involves random adsorption at empty sites, and correlated desorption requiring diagonal pairs of empty neighbors. A simulation study of this model [D.-J. Liu, X. Guo, JW. Evans, Phys. Rev. Lett. 98 (2007) 050601] revealed the existence of generic two-phase coexistence between a low-coverage active steady-state and a completely covered absorbing state. Here, an analytic treatment of model behavior is developed based on truncation approximations to the exact master equations. Applying this approach for spatially homogeneous states, we characterize steady-state behavior as well as the kinetics of relaxation to the steady-states. Extending consideration to spatially inhomogeneous states, we obtain discrete reaction-diffusion type equations characterizing evolution. These are employed to analyze an orientation-dependence of the propagation of planar interfaces between active and absorbing states which underlies the generic two-phase coexistence. We also describe the dynamics and critical forms of planar perturbations of the active state and of droplets of one phase embedded in the other. (c) 2007 Elsevier B.V. All rights reserved. C1 Iowa State Univ, Ames Lab, USDOE, Ames, IA 50011 USA. Iowa State Univ, Dept Phys & Astron, Dept Math, Ames, IA 50011 USA. RP Evans, JW (reprint author), Iowa State Univ, Ames Lab, USDOE, Ames, IA 50011 USA. EM evans@ameslab.gov NR 26 TC 10 Z9 10 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-4371 J9 PHYSICA A JI Physica A PD JAN 1 PY 2008 VL 387 IS 1 BP 177 EP 201 DI 10.1016/j.physa.2007.09.002 PG 25 WC Physics, Multidisciplinary SC Physics GA 239BZ UT WOS:000251494400015 ER PT J AU Wang, Z Zu, X Yang, L Gao, F Weber, WJ AF Wang, Zhiguo Zu, Xiaotao Yang, Li Gao, Fei Weber, William J. TI Molecular dynamics simulation on the buckling behavior of GaN nanowires under uniaxial compression SO PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES LA English DT Article DE GaN nanowires; compression; buckling; molecular dynamics ID CHEMICAL-VAPOR-DEPOSITION; NANOTUBES; GROWTH AB Molecular dynamics simulation is one of the most promising methods for investigating the mechanical behavior of nanostructures, such as nanowires and nanotubes. Atomistic simulations are performed to investigate the buckling properties of [001]-, [110]-, and [110]-oriented GaN nanowires under uniaxial compression; these three types of nanowires correspond to experimentally synthesized nanowires. The effects of simulation temperature and wire length on the buckling behavior are investigated. The simulation results show that critical stress decreases with the increase of wire length, which is in agreement with the Euler theory. Buckling occurs as a result of dynamic processes; buckling strain (and corresponding stress) decreases as temperature is increased. (C) 2007 Elsevier B.V. All rights reserved. C1 [Wang, Zhiguo; Zu, Xiaotao; Yang, Li] Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China. [Gao, Fei; Weber, William J.] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Wang, Z (reprint author), Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China. EM zgwangjr@yahoo.com RI Wang, Zhiguo/B-7132-2009; Weber, William/A-4177-2008; Gao, Fei/H-3045-2012 OI Weber, William/0000-0002-9017-7365; NR 25 TC 16 Z9 16 U1 0 U2 7 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1386-9477 EI 1873-1759 J9 PHYSICA E JI Physica E PD JAN PY 2008 VL 40 IS 3 BP 561 EP 566 DI 10.1016/j.physe.2007.08.040 PG 6 WC Nanoscience & Nanotechnology; Physics, Condensed Matter SC Science & Technology - Other Topics; Physics GA 260TH UT WOS:000253032800024 ER PT J AU Ledbetter, H Migliori, A AF Ledbetter, Hassel Migliori, Albert TI Elastic-constant systematics in f.c.c. metals, including lanthanides-actinides SO PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS LA English DT Article ID CUBIC METALS; CRYSTALS AB For f.c.c. metals, using Blackman's diagram of dimensionless elastic-constant ratios, we consider the systematics of physical properties and interatomic bonding. We focus especially on the lanthanides-actinides La, Ce, Yb, Th, U, Pu, those for which we know some monocrystal elastic constants. Their behavior differs from the other f.c.c. metals, and all except La show a negative Cauchy pressure, contrary to most f.c.c.metals, which show a positive Cauchy pressure. Among the lanthanides-actinides, delta-Pu stands apart, consistent with its many odd physical properties. Based on elastic-constant correlations, we suggest that delta-Pu possesses a strong s-electron interatomic-bonding component together with a covalent component. Elastically, delta-Pu shows properties similar to Yb. C1 [Ledbetter, Hassel] Univ Colorado, Dept Mech Engn, Boulder, CO 80309 USA. [Migliori, Albert] Univ Calif Los Alamos Natl Lab E536, Los Alamos, NM 87545 USA. RP Ledbetter, H (reprint author), Univ Colorado, Dept Mech Engn, Boulder, CO 80309 USA. EM hassel33@msn.com NR 44 TC 14 Z9 14 U1 2 U2 17 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 0370-1972 J9 PHYS STATUS SOLIDI B JI Phys. Status Solidi B-Basic Solid State Phys. PD JAN PY 2008 VL 245 IS 1 BP 44 EP 49 DI 10.1002/pssb.200743075 PG 6 WC Physics, Condensed Matter SC Physics GA 256EM UT WOS:000252710500006 ER PT S AU Niebling, T Rubel, O Heimbrodt, W Stolz, W Baranovskii, SD Klar, PJ Geisz, JF AF Niebling, T. Rubel, O. Heimbrodt, W. Stolz, W. Baranovskii, S. D. Klar, P. J. Geisz, J. F. BE Baranovski, S TI Hopping energy relaxation of localized excitons in GaP(N) SO PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 5, NO 3 SE Physica Status Solidi C-Current Topics in Solid State Physics LA English DT Proceedings Paper CT 12th International Conference on Transport in Interacting Disordered Systems CY AUG 06-10, 2007 CL Marburg, GERMANY ID GANXP1-X ALLOYS; ISOELECTRONIC TRAPS; QUANTUM-WELL; PHOTOLUMINESCENCE; TIME; RECOMBINATION; CDS1-XSEX; NITROGEN; STATES AB Low-temperature kinetics of the energy transfer of localized optical excitations in a nitrogen-doped Gal? bulk sample with a nitrogen content of 2.1 % is studied by means of time-resolved spectroscopy. Both spectral and time dependence of the photoluminescence decay are described quantitatively in a time range from nanoseconds to microsecond by a phenomenological theory of hopping and energy relaxation of localized excitons. The density of localized states and their energy distribution are determined by comparison of experiment and theory. (C) 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. C1 [Niebling, T.; Rubel, O.; Heimbrodt, W.; Stolz, W.; Baranovskii, S. D.] Univ Marburg, Dept Phys, D-35032 Marburg, Germany. [Niebling, T.; Rubel, O.; Heimbrodt, W.; Stolz, W.; Baranovskii, S. D.] Univ Marburg, Ctr Mat Sci, D-35032 Marburg, Germany. [Klar, P. J.] Univ Giessen, Inst Expt Phys 1, D-35392 Giessen, Germany. [Geisz, J. F.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Niebling, T (reprint author), Univ Marburg, Dept Phys, Renthof 5, D-35032 Marburg, Germany. EM tobias.niebling@physik.uni-marburg.de NR 24 TC 2 Z9 2 U1 2 U2 5 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PAPPELALLEE 3, W-69469 WEINHEIM, GERMANY SN 1862-6351 J9 PHYS STATUS SOLIDI C PY 2008 VL 5 IS 3 BP 768 EP 771 DI 10.1002/pssc.200777574 PG 4 WC Materials Science, Multidisciplinary; Physics, Applied; Polymer Science SC Materials Science; Physics; Polymer Science GA BHN29 UT WOS:000254469900022 ER PT S AU Burin, AL Shklovskii, BI Kozub, VI Galperin, YM Vinokur, V AF Burin, Alexander L. Shklovskii, Boris I. Kozub, Veniamin I. Galperin, Yuri M. Vinokur, Valerii BE Baranovski, S TI Many electron theory of 1/f-noise in hopping conductivity SO PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 5, NO 3 SE Physica Status Solidi C-Current Topics in Solid State Physics LA English DT Proceedings Paper CT 12th International Conference on Transport in Interacting Disordered Systems CY AUG 06-10, 2007 CL Marburg, GERMANY ID LOW-FREQUENCY NOISE; DISORDERED SYSTEMS; COULOMB GAP; 1/F NOISE; DYNAMICS; GLASS AB We show that 1/f-noise in the variable range hopping regime is related to transitions of many-electrons clusters (fluctuators) between two almost degenerate states. Giant fluctuation times necessary for 1/f -noise are provided by slow rate of simultaneous tunneling of many localized electrons and by large activation barriers for their consecutive rearrangements. The Hooge constant steeply grows with decreasing temperature because it is easier to find a slow fluctuator at lower temperatures. Our conclusions qualitatively agree with the low temperature observations of 1/f-noise in p-type silicon and GaAs. (C) 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. C1 [Burin, Alexander L.] Tulane Univ, Dept Chem, New Orleans, LA 70118 USA. [Shklovskii, Boris I.] Univ Minnesota, Sch Phys & Astron, William P Fine Inst Theoret Phys, Minneapolis, MN 55455 USA. [Kozub, Veniamin I.; Galperin, Yuri M.] AF Ioffe Phys Tech Inst, Russian Acad Sci, St Petersburg 194021, Russia. [Kozub, Veniamin I.; Galperin, Yuri M.; Vinokur, Valerii] Argonne Natl Lab, Argonne, IL 60439 USA. [Galperin, Yuri M.] Univ Oslo, Dept Phys, N-0316 Oslo, Norway. RP Burin, AL (reprint author), Tulane Univ, Dept Chem, New Orleans, LA 70118 USA. EM aburin@tulane.edu RI Galperin, Yuri/A-1851-2008; Kozub, Veniamin/E-4017-2014 OI Galperin, Yuri/0000-0001-7281-9902; NR 29 TC 6 Z9 6 U1 0 U2 0 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PAPPELALLEE 3, W-69469 WEINHEIM, GERMANY SN 1862-6351 J9 PHYS STATUS SOLIDI C PY 2008 VL 5 IS 3 BP 800 EP + DI 10.1002/pssc.200777554 PG 3 WC Materials Science, Multidisciplinary; Physics, Applied; Polymer Science SC Materials Science; Physics; Polymer Science GA BHN29 UT WOS:000254469900029 ER PT S AU Drichko, IL Dyakonov, AM Smirnov, IY Suslov, AV Galperin, YM Vinokur, V Myronov, M Mironov, OA AF Drichko, I. L. Dyakonov, A. M. Smirnov, I. Yu. Suslov, A. V. Galperin, Y. M. Vinokur, V. Myronov, M. Mironov, O. A. BE Baranovski, S TI Low-temperature conductance mechanisms in p-Si/SiGe heterostructures in high magnetic fields SO PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 5, NO 3 SE Physica Status Solidi C-Current Topics in Solid State Physics LA English DT Proceedings Paper CT 12th International Conference on Transport in Interacting Disordered Systems CY AUG 06-10, 2007 CL Marburg, GERMANY ID INSULATING PHASE; ELECTRON-GAS; CONDUCTIVITY; TRANSITION; FREQUENCY; CRYSTAL AB Low-temperature conductance mechanism in low-density Si/SiGe heterostructures in high magnetic fields (ultra-quantum limit) is studied using AC and DC transport measurements. Evidence of the Wigner crystal in this regime is given. (C) 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim C1 [Drichko, I. L.; Dyakonov, A. M.; Smirnov, I. Yu.; Galperin, Y. M.] Russian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia. [Suslov, A. V.] Natl High Magnet Field Lab, Tallahassee, FL 32310 USA. [Galperin, Y. M.] Univ Oslo, Dept Phys, N-0316 Oslo, Norway. [Galperin, Y. M.; Vinokur, V.] Argonne Natl Lab, Argonne, IL 60439 USA. [Myronov, M.] Musashi Inst Technol, Setagaya Ku, Tokyo, Japan. [Mironov, O. A.] Univ Warwick, Coventry CV4 7EZ, W Midlands, England. [Mironov, O. A.] Int Lab High Magnet Fields & Low Temp, PL-50985 Wroclaw, Poland. RP Drichko, IL (reprint author), Russian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia. EM irina.l.drichko@mail.ioffe.ru RI Galperin, Yuri/A-1851-2008; Smirnov, Ivan/E-4685-2014; Suslov, Alexey/M-7511-2014; OI Galperin, Yuri/0000-0001-7281-9902; Suslov, Alexey/0000-0002-2224-153X; Mironov, Oleg A./0000-0002-9787-944X FU Presidium of the Russian Academy of Sciences; Program of RAS "Spintronika"; NSF Cooperative [DMR-0084173]; State of Florida, NHMFL In-House Research Program; US DOE Office of Science [DE-AC02-06CH11357] FX The work is supported by grants of Presidium of the Russian Academy of Sciences, the Program of RAS "Spintronika", SPbSC of RAS 2007, NSF Cooperative Agreement DMR-0084173, State of Florida, NHMFL In-House Research Program. The work of YG, and VV was supported by the US DOE Office of Science DE-AC02-06CH11357. NR 20 TC 0 Z9 0 U1 0 U2 0 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PAPPELALLEE 3, W-69469 WEINHEIM, GERMANY SN 1862-6351 J9 PHYS STATUS SOLIDI C PY 2008 VL 5 IS 3 BP 829 EP + DI 10.1002/pssc.200777555 PG 3 WC Materials Science, Multidisciplinary; Physics, Applied; Polymer Science SC Materials Science; Physics; Polymer Science GA BHN29 UT WOS:000254469900034 ER PT S AU Seifter, A Swift, DC AF Seifter, A. Swift, D. C. BE Arwin, H Beck, U Schubert, M TI A new sub-nanosecond spectral ellipsometer for shock physics applications SO PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 5, NO 5 SE Physica Status Solidi C-Current Topics in Solid State Physics LA English DT Proceedings Paper CT 4th International Conference on Spectroscopic Ellipsometry (ICSE-4) CY JUN 11-15, 2007 CL Stockholm, SWEDEN AB Detecting phase changes in dynamically loaded materials at pressures up into the megabar regime is among the top challenges in shock physics. Probing, the electronic band structure by means of spectral ellipsometry is one of the possible solutions to this problem. For this purpose a fast spectral ellipsometer in the spectral range from 500 to 2000 run is developed currently in the Physics Division of the Los Alamos National Laboratory. This paper discusses' some of the most prominent difficulties associated with shock physics experiments, including sample movement, roughening of the sample surface after shock breakout and a change of index of refraction due to compression of transparent anvils often used in this kind of experiments. The layout of the instrument and its main components (light source, detectors and polarization measurement components) will be described as well as simulated spectra in order to get an understanding of the main contributions to measurement uncertainties. C1 [Seifter, A.] Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA. [Swift, D. C.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Seifter, A (reprint author), Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA. EM self@lanl.gov; dswift@llnl.gov FU U.S. Department of Energy [W-7405-ENG-36, DE-AC52-06NA25396] FX We would like to thank Dr. Shankar Krishnan from KLA-Tencor Corporation for valuable discussion of the instrument design. The work was performed under the auspices of the U.S. Department of Energy under contracts W-7405-ENG-36 and DE-AC52-06NA25396. NR 14 TC 3 Z9 3 U1 0 U2 1 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PAPPELALLEE 3, W-69469 WEINHEIM, GERMANY SN 1862-6351 J9 PHYS STATUS SOLIDI C PY 2008 VL 5 IS 5 BP 1073 EP + DI 10.1002/pssc.200777833 PG 2 WC Physics, Condensed Matter; Spectroscopy SC Physics; Spectroscopy GA BHV64 UT WOS:000256862500017 ER PT S AU Liliental-Weber, Z Hawkridge, M Mangum, J Kryliouk, O AF Liliental-Weber, Z. Hawkridge, M. Mangum, J. Kryliouk, O. BE Palacios, T Jena, D TI InN nanorods and nanowires grown on different substrates SO PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 5, NO 6 SE Physica Status Solidi C-Current Topics in Solid State Physics LA English DT Proceedings Paper CT 7th International Conference on Nitride Semiconductors (ICNS-7) CY SEP 16-21, 2007 CL Las Vegas, NV SP Aixtron AG, Rohm & Hass Elect Mat LLC, Akzo Nobel High Pur Metalorgan, Cree Inc, IQE, Nitronex, RFMD, Seoul Semicond Co Ltd, Sony Corp, Toyoda Gosei Co Ltd, Kopin Corp, Mitsubishi Chem Corp, Nichia Corp, Taiyo Nippon Sanso Corp, Veeco Instruments, Air Prod & Chem, Osram Opto Semicond GmbH, SAFC Hitech AB Transmission Electron Microscopy was applied to study InN nanorods grown by non-catalytic, template-free hydride metal-organic vapor phase epitaxy (solid-vapor mechanism) and nanowires grown by a vapor-liquid-solid growth (VLS) mechanism in a MOVPE reactor. The nanorods and nanowires were grown on different planes of Al2O3, (0002) GaN/Al2O3, and (001) Si. The majority of nanorods have a high structural perfection and exhibit abrupt side walls, but some of them show formation of the planar defects. Depending on the substrate used, the size, shape and tips of the nanorods vary from hexagonal to pencil-like. Nanowires, however have very corrugated surfaces along their side-walls and tips, and depending on the V/III flow ratio these nanowires can have either a constant diameter or taper-off. Their length can extend up to 100 mu m. Bending and branching of nanowires was observed, but this phenomenon was never observed for nanorods. C1 [Liliental-Weber, Z.; Hawkridge, M.] Lawrence Berkeley Natl Lab, Div Mat Sci, M-S 62R0203, Berkeley, CA 94720 USA. [Mangum, J.; Kryliouk, O.] Univ Florida, Dept Chem Engn, Gainesville, FL 32611 USA. RP Liliental-Weber, Z (reprint author), Lawrence Berkeley Natl Lab, Div Mat Sci, M-S 62R0203, Berkeley, CA 94720 USA. EM z_liliental-weber@lbl.gov; MEHawkridge@lbl.gov; jmangum@che.ufl.edu; olgak@grove.ufl.edu RI Liliental-Weber, Zuzanna/H-8006-2012 FU Director, Office of Science; Office of Basic Energy Sciences,; Division of Materials Sciences and Engineering; U.S. Department of Energy [DE-AC02-05CH11231]; UF; NSF [CTS-031178, DMR 0400416]; NASA Kennedy Space Center Grant [NAG 10-316]; ONR [N00014-98-1- 04] FX This work is supported by the Director, Office of Science, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. The work at UF is partially supported by NSF (CTS-031178) and NASA Kennedy Space Center Grant NAG 10-316, ONR (N00014-98-1- 04) and NSF DMR 0400416 NR 6 TC 5 Z9 5 U1 1 U2 13 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PAPPELALLEE 3, W-69469 WEINHEIM, GERMANY SN 1862-6351 J9 PHYS STATUS SOLIDI C PY 2008 VL 5 IS 6 BP 1795 EP + DI 10.1002/pssc.200778649 PG 3 WC Materials Science, Coatings & Films; Physics, Condensed Matter SC Materials Science; Physics GA BHV31 UT WOS:000256695700096 ER PT S AU Trybus, E Jani, O Burnham, S Ferguson, I Honsberg, C Steiner, M Doolittle, WA AF Trybus, E. Jani, O. Burnham, S. Ferguson, I. Honsberg, C. Steiner, M. Doolittle, W. A. BE Palacios, T Jena, D TI Characteristics of InGaN designed for photovoltaic applications SO PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 5, NO 6 SE Physica Status Solidi C-Current Topics in Solid State Physics LA English DT Proceedings Paper CT 7th International Conference on Nitride Semiconductors (ICNS-7) CY SEP 16-21, 2007 CL Las Vegas, NV SP Aixtron AG, Rohm & Hass Elect Mat LLC, Akzo Nobel High Pur Metalorgan, Cree Inc, IQE, Nitronex, RFMD, Seoul Semicond Co Ltd, Sony Corp, Toyoda Gosei Co Ltd, Kopin Corp, Mitsubishi Chem Corp, Nichia Corp, Taiyo Nippon Sanso Corp, Veeco Instruments, Air Prod & Chem, Osram Opto Semicond GmbH, SAFC Hitech ID FUNDAMENTAL-BAND GAP; INN AB This work addresses the required properties and device structures for an InGaN solar cell. Homojunction InGaN solar cells with a bandgap greater than 2.0 eV are specifically targeted due to material limitations. These devices are attractive because over half the available power in the solar spectrum is above 2.0 W. Using high growth rates, InGaN films with indium compositions ranging from 1 to 32% have been grown by Molecular Beam Epitaxy with negligible phase separation according to X-ray diffraction analysis, and better than 190 arc-sec omega-2 theta FWHM for similar to 0.6 mu m thick In0.32Ga0.68N film. Using measured transmission data, the adsorption coefficient of InGaN at 2.4 eV was calculated as alpha congruent to 2x10(5) cm(-1) near the band edge. This results in the optimal solar cell thickness of less than a micron and may lead to high open circuit voltage while reducing the constraints on limited minority carrier life-times. C1 [Trybus, E.; Jani, O.; Burnham, S.; Ferguson, I.; Doolittle, W. A.] Georgia Inst Technol, Sch Elect & Comp Engn, 777 Atlantic Dr NW, Atlanta, GA 30332 USA. [Honsberg, C.] Univ Delaware, Dept Elect & Comp Engn, Newark, DE 19716 USA. [Steiner, M.] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Trybus, E (reprint author), Georgia Inst Technol, Sch Elect & Comp Engn, 777 Atlantic Dr NW, Atlanta, GA 30332 USA. EM elaissa@ece.gatech.edu; alan.doolittle@ece.gatech.edu FU Department of Energy; National Renewable Energy Laboratory; Defence Advanced Research Projects Agency FX This work was supported by the Department of Energy, National Renewable Energy Laboratory, and the Defence Advanced Research Projects Agency monitored by Dr. Doug Kirkpatrick and the University of Delaware monitored by Dr. Allen Barnett under the Very High Efficiency Solar Cell Program. NR 6 TC 10 Z9 10 U1 0 U2 9 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PAPPELALLEE 3, W-69469 WEINHEIM, GERMANY SN 1862-6351 J9 PHYS STATUS SOLIDI C PY 2008 VL 5 IS 6 BP 1843 EP + DI 10.1002/pssc.200778693 PG 2 WC Materials Science, Coatings & Films; Physics, Condensed Matter SC Materials Science; Physics GA BHV31 UT WOS:000256695700110 ER PT S AU Miller, N Jones, RE Yu, KM Ager, JW Liliental-Weber, Z Haller, EE Walukiewicz, W Williamson, TL Hoffbauer, MA AF Miller, N. Jones, R. E. Yu, K. M. Ager, J. W. Liliental-Weber, Z. Haller, E. E. Walukiewicz, W. Williamson, T. L. Hoffbauer, M. A. BE Palacios, T Jena, D TI Low-temperature grown compositionally graded InGaN films SO PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 5, NO 6 SE Physica Status Solidi C-Current Topics in Solid State Physics LA English DT Proceedings Paper CT 7th International Conference on Nitride Semiconductors (ICNS-7) CY SEP 16-21, 2007 CL Las Vegas, NV SP Aixtron AG, Rohm & Hass Elect Mat LLC, Akzo Nobel High Pur Metalorgan, Cree Inc, IQE, Nitronex, RFMD, Seoul Semicond Co Ltd, Sony Corp, Toyoda Gosei Co Ltd, Kopin Corp, Mitsubishi Chem Corp, Nichia Corp, Taiyo Nippon Sanso Corp, Veeco Instruments, Air Prod & Chem, Osram Opto Semicond GmbH, SAFC Hitech ID INN; EPITAXY AB A new thin film growth technique known as energetic neutral atomic-beam lithography/epitaxy (ENABLE) provides a large energetic N atom flux and eliminates the need for high substrate temperatures as compared to molecular beam epitaxy, making isothermal-growth over the entire InGaN alloy composition range possible without phase separation 500-800 nm thick compositionally graded InGaN films Were grown, by ENABLE at similar to 450 degrees C with the following structure types: (1) with the Ga-rich material on the surface and (2) with the In-rich material on the surface. Rutherford backscattering spectrometry, transmission electron microscopy, X-ray diffraction, absorption spectroscopy, photoluminescence, and Hall effect measurements were used to assess the thickness, composition, crystalline quality, and optical and electrical properties of the films. The results establish the new ENABLE method as uniquely capable of growing compositionally graded InGaN films and, in the future, InN/GaN heterostructures. C1 [Miller, N.; Jones, R. E.; Yu, K. M.; Ager, J. W.; Liliental-Weber, Z.; Haller, E. E.; Walukiewicz, W.] Los Alamos Natl Lab, Div Mat Sci, Berkeley, CA USA. [Miller, N.; Jones, R. E.; Haller, E. E.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA USA. [Williamson, T. L.; Hoffbauer, M. A.] Los Alamos Natl Lab, Div Chem, Los Alamos, NM USA. RP Miller, N (reprint author), Los Alamos Natl Lab, Div Mat Sci, Berkeley, CA USA. EM NateMiller@lbl.gov RI Liliental-Weber, Zuzanna/H-8006-2012; Yu, Kin Man/J-1399-2012; OI Yu, Kin Man/0000-0003-1350-9642; Ager, Joel/0000-0001-9334-9751 FU U.S. Department of Energy [DE-AC02-05CH11231]; Laboratory Directed Research & Development Program FX Work at LBNL was supported by the Director, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. The work at LANL was supported through the Laboratory Directed Research & Development Program. NM and RJ acknowledge the U.S. Department of Defence for NDSEG support. NR 8 TC 12 Z9 12 U1 0 U2 4 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PAPPELALLEE 3, W-69469 WEINHEIM, GERMANY SN 1862-6351 J9 PHYS STATUS SOLIDI C PY 2008 VL 5 IS 6 BP 1866 EP + DI 10.1002/pssc.200778719 PG 2 WC Materials Science, Coatings & Films; Physics, Condensed Matter SC Materials Science; Physics GA BHV31 UT WOS:000256695700117 ER PT S AU Syrkin, A Ivantsov, V Kovalenkov, O Usikov, A Dmitriev, V Liliental-Weber, Z Reed, ML Readinger, ED Shen, H Wraback, M AF Syrkin, A. Ivantsov, V. Kovalenkov, O. Usikov, A. Dmitriev, V. Liliental-Weber, Z. Reed, M. L. Readinger, E. D. Shen, H. Wraback, M. BE Palacios, T Jena, D TI First all-HVPE grown InGaN/InGaN MQW LED structures for 460-510 nm SO PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 5, NO 6 SE Physica Status Solidi C-Current Topics in Solid State Physics LA English DT Proceedings Paper CT 7th International Conference on Nitride Semiconductors (ICNS-7) CY SEP 16-21, 2007 CL Las Vegas, NV SP Aixtron AG, Rohm & Hass Elect Mat LLC, Akzo Nobel High Pur Metalorgan, Cree Inc, IQE, Nitronex, RFMD, Seoul Semicond Co Ltd, Sony Corp, Toyoda Gosei Co Ltd, Kopin Corp, Mitsubishi Chem Corp, Nichia Corp, Taiyo Nippon Sanso Corp, Veeco Instruments, Air Prod & Chem, Osram Opto Semicond GmbH, SAFC Hitech ID LIGHT-EMITTING-DIODES; GAN; LAYERS AB In this paper we report - on first InGaN-based light emitting structures grown by hydride vapour phase epitaxy (HVPE). InGaN layers and multi layer InGaN/InGaN epitaxial structures were grown on GaN/sapphire template substrates and characterized, InN content in the InGaN layers was varied from 5 to 35 mol. %. Thickness of InGaN layers was controlled from 10 nm to 2 microns. Density of treading dislocations in the InGaN layers was estimated to be in the 109 cm(-2) range. X-ray diffraction measurements and transmission electron microscopy data confirmed a formation of InGaN/InGaN superlattice structures. Light emitting diode epitaxial wafers were fabricated by HVPE deposition of n-type InGaN layers and multi layer structures on p-type GaN template substrates. Depending on InN content in the InGAN light emitting regions, peak electroluminescence wavelength varied from 450 to 510 nm. Results of material characterization are reported. Advantages of the proposed upside down LED configuration and future applications of HVPE to grow InGaN layers and structures are discussed. (c) 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. C1 [Syrkin, A.; Ivantsov, V.; Kovalenkov, O.; Usikov, A.; Dmitriev, V.] Technol & Devices Int Inc, Silver Spring, MD 20904 USA. [Liliental-Weber, Z.] Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. [Reed, M. L.; Readinger, E. D.; Shen, H.; Wraback, M.] US Army, Res Lab, Sensors & Elect Devices Directorate, Adelphi, MD 20783 USA. RP Syrkin, A (reprint author), Technol & Devices Int Inc, Silver Spring, MD 20904 USA. EM ASyrkin@tdii.com; AUsikov@tdii.com RI Liliental-Weber, Zuzanna/H-8006-2012 FU US Departments of Defence, Comerce, and Energy (Solid State Lighting Program) FX Development of HVPE technology at TDI was partly supported by the US Departments of Defence, Comerce, and Energy (Solid State Lighting Program). The authors thank colleagues from Palo Alto Research Center and Texas Tech University for fruitful help and discussion NR 9 TC 4 Z9 4 U1 0 U2 10 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PAPPELALLEE 3, W-69469 WEINHEIM, GERMANY SN 1862-6351 J9 PHYS STATUS SOLIDI C PY 2008 VL 5 IS 6 BP 2244 EP + DI 10.1002/pssc.200778647 PG 2 WC Materials Science, Coatings & Films; Physics, Condensed Matter SC Materials Science; Physics GA BHV31 UT WOS:000256695700236 ER PT S AU Walsh, A Wei, SH AF Walsh, Aron Wei, Su-Huai BE Palacios, T Jena, D TI Filling the green gap: A first-principles study of the LiMg1-xZnxN alloy SO PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 5, NO 6 SE Physica Status Solidi C-Current Topics in Solid State Physics LA English DT Proceedings Paper CT 7th International Conference on Nitride Semiconductors (ICNS-7) CY SEP 16-21, 2007 CL Las Vegas, NV SP Aixtron AG, Rohm & Hass Elect Mat LLC, Akzo Nobel High Pur Metalorgan, Cree Inc, IQE, Nitronex, RFMD, Seoul Semicond Co Ltd, Sony Corp, Toyoda Gosei Co Ltd, Kopin Corp, Mitsubishi Chem Corp, Nichia Corp, Taiyo Nippon Sanso Corp, Veeco Instruments, Air Prod & Chem, Osram Opto Semicond GmbH, SAFC Hitech ID FILLED TETRAHEDRAL SEMICONDUCTORS; TOTAL-ENERGY CALCULATIONS; WAVE BASIS-SET; ELECTRONIC-PROPERTIES; BAND-GAP AB The lack of an efficient emitter in the 500-600nm range is limiting the adoption of LEDs for indoor fighting applications. The degradation in performance of current InGaN alloys in this range is due to the large lattice mismatch between, InN and GaN and associated alloy phase instabilities. We propose and investigate, using first-principles methods, the electronic, structure of an alternative LiMg1-xZnxN alloy which his the potential to fill this gap. The small lattice mismatch between LiMgN and LiZnN, along with electronic band gaps spanning the visible range, make them, in principle, ideal, candidates for white LIED applications. C1 [Walsh, Aron; Wei, Su-Huai] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Walsh, A (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. EM aron_walsh@nrel.gov RI Walsh, Aron/A-7843-2008 OI Walsh, Aron/0000-0001-5460-7033 NR 19 TC 1 Z9 1 U1 0 U2 3 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PAPPELALLEE 3, W-69469 WEINHEIM, GERMANY SN 1862-6351 J9 PHYS STATUS SOLIDI C PY 2008 VL 5 IS 6 BP 2326 EP 2328 DI 10.1002/pssc.200778404 PG 3 WC Materials Science, Coatings & Films; Physics, Condensed Matter SC Materials Science; Physics GA BHV31 UT WOS:000256695700261 ER PT S AU He, T Liu, YD Jiang, QW Ren, Y Wang, G Wang, YD Zhao, X Zuo, L AF He, T. Liu, Y. D. Jiang, Q. W. Ren, Y. Wang, G. Wang, Y. D. Zhao, X. Zuo, L. BE Niu, J Liu, ZY Jin, C Zhou, G TI The in-situ study on the micro-structural characters of IF steel at early stage of recrystallization using high-energy X-ray SO PHYSICAL AND NUMERICAL SIMULATION OF MATERIALS PROCESSING, PTS 1 AND 2 SE Materials Science Forum LA English DT Proceedings Paper CT 5th International Conference on Physical and Numerical Simulation of Material Processing (ICPNS 07) CY OCT 23-27, 2007 CL Zhengzhou, PEOPLES R CHINA SP Chinese Mech Engn Soc, Minerals, Met & Mat Soc, Japan Inst Met, Harbin Inst Technol, Zhengzhou Univ, Henan Polytech Univ, Zhongyuan Inst Technol DE IF steel; texture; residual stress; recrystallization; high-energy synchrotron X-ray ID INTERSTITIAL-FREE STEEL; TEXTURES AB High-energy synchrotron diffraction offers great potential for experimental study of recrystallization kinetics. A fine experimental design to study the recrystallization mechanism of Interstitial Free (IF) steel was implemented in this work. In-situ annealing process of cold-rolled IF steel with 80% reduction was observed using high-energy X-ray diffraction. Results show that, the diffraction intensity of {100} < 110 > and {112} < 110 > belong to a-fiber texture component decreased with the annealing temperature increased while {110} < 110 > did nearly not change and {111} < 112 > increased; the FMTH decreasing and d-space changing with annealing temperature increasing indicated that the residual stress relaxed completely during recovery. C1 [He, T.; Liu, Y. D.; Wang, G.; Wang, Y. D.; Zhao, X.; Zuo, L.] Minist Educ, Key Lab Anisotropy & Texture Mat, Shenyang 110004, Peoples R China. [Jiang, Q. W.] Anshan Iron & Steel Grp Corp, Factory Cold Rolling Silicon Steel, Anshan, Peoples R China. [Ren, Y.] Argonne Natl Lab, X ray Sci Div, Argonne, IL 60439 USA. RP He, T (reprint author), Minist Educ, Key Lab Anisotropy & Texture Mat, Shenyang 110004, Peoples R China. EM YDLiu@mail.neu.edu.cn FU National Nature Science Foundation of China [50231030]; NSFC [50671021]; Program for New Century Excellent Talents in University [NCET-06-0286] FX The research is supported by the key project of National Nature Science Foundation of China (Grant No. 50231030), NSFC (Grant No. 50671021) and Program for New Century Excellent Talents in University (Grant No. NCET-06-0286) . NR 11 TC 0 Z9 0 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 2008 VL 575-578 BP 972 EP + PN 1-2 PG 2 WC Materials Science, Multidisciplinary SC Materials Science GA BHV63 UT WOS:000256859700164 ER PT J AU Taatjes, CA Hansen, N Osborn, DL Kohse-Hoinghaus, K Cool, TA Westmoreland, PR AF Taatjes, Craig A. Hansen, Nils Osborn, David L. Kohse-Hoeinghaus, Katharina Cool, Terrill A. Westmoreland, Phillip R. TI "Imaging" combustion chemistry via multiplexed synchrotron-photoionization mass spectrometry SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Review ID HYDROCARBON GROWTH-PROCESSES; CHARGE COMPRESSION IGNITION; DIMETHYL ETHER FLAMES; FUEL-RICH FLAMES; CROSS-SECTIONS; FREE-RADICALS; CYCLOHEXANE OXIDATION; LOW-PRESSURE; FUNDAMENTAL CHEMISTRY; ELECTRONIC-STRUCTURE AB The combination of multiplexed mass spectrometry with photoionization by tunable-synchrotron radiation has proved to be a powerful tool to investigate elementary reaction kinetics and the chemistry of low-pressure flames. In both of these applications, multiple-mass detection and the ease of tunability of synchrotron radiation make it possible to acquire full sets of data as a function of mass, photon energy, and of the physical dimension of the system, e. g. distance from the burner or time after reaction initiation. The data are in essence an indirect image of the chemistry. The data can be quantitatively correlated and integrated along any of several dimensions to compare to traditional measurements such as time or distance profiles of individual chemical species, but it can also be directly interpreted in image form. This perspective offers an overview of flame chemistry and chemical kinetics measurements that combine tunable photoionization with multiple-mass detection, emphasizing the overall insight that can be gained from multidimensional data on these systems. The low-pressure flame apparatus is capable of providing isomer-resolved mass spectra of stable and radical species as a function of position in the flame. The overall chemical structure of the flames can be readily seen from images of the evolving mass spectrum as distance from the burner increases, with isomer-specific information given in images of the photoionization efficiency. Several flames are compared in this manner, with a focus on identification of global differences in fuel-decomposition and soot-formation pathways. Differences in the chemistry of flames of isomeric fuels can be discerned. The application of multiplexed synchrotron photoionization to elementary reaction kinetics permits identification of time-resolved isomeric composition in reacting systems. The power of this technique is illustrated by the separation of direct and dissociative ionization signals in the reaction of C2H5 with O-2; by the resolution of isomeric products in reactions of the ethynyl ( C2H) radical; and by preliminary observation of branching to methyl + propargyl products in the self-reaction of vinyl radicals. Finally, prospects for future research using multiplexed photoionization mass spectrometry are explored. C1 [Taatjes, Craig A.; Hansen, Nils; Osborn, David L.] Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA. [Kohse-Hoeinghaus, Katharina] Univ Bielefeld, Dept Chem, D-33615 Bielefeld, Germany. [Cool, Terrill A.] Cornell Univ, Sch Appl & Engn Phys, Ithaca, NY 14853 USA. [Westmoreland, Phillip R.] Univ Massachusetts, Dept Chem Engn, Amherst, MA 01003 USA. RP Taatjes, CA (reprint author), Sandia Natl Labs, Combust Res Facil, Mail Stop 9055, Livermore, CA 94551 USA. EM cataatj@sandia.gov RI Osborn, David/A-2627-2009; Kohse-Hoinghaus, Katharina/A-3867-2012; Hansen, Nils/G-3572-2012 NR 127 TC 109 Z9 112 U1 11 U2 57 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 1 BP 20 EP 34 DI 10.1039/b713460f PG 15 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 243CL UT WOS:000251772400003 PM 18075680 ER PT J AU Sasaki, K Zhang, L Adzic, RR AF Sasaki, K. Zhang, L. Adzic, R. R. TI Niobium oxide-supported platinum ultra-low amount electrocatalysts for oxygen reduction SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID RAY-ABSORPTION-SPECTROSCOPY; O-2 REDUCTION; FUEL-CELL; MONOLAYER ELECTROCATALYSTS; KINETIC-PARAMETERS; CATALYSTS; SURFACE; ACID; NANOPARTICLES; ELECTRODE AB We demonstrate a new approach to synthesizing high-activity electrocatalysts for the O-2 reduction reaction with ultra low Pt content. The synthesis involves placing a small amount of Pt, the equivalent of a monolayer, on carbon-supported niobium oxide nanoparticles (NbO2 or Nb2O5). Rotating disk electrode measurements show that the Pt/NbO2/C electrocatalyst has three times higher Pt mass activity for the O-2 reduction reaction than a commercial Pt/C electrocatalyst. The observed high activity of the Pt deposit is attributed to the reduced OH adsorption caused by lateral repulsion between PtOH and oxide surface species. The new electrocatalyst also exhibits improved stability against Pt dissolution under a potential cycling regime ( 30 000 cycles from 0.6 V to 1.1 V). These findings demonstrate that niobium-oxide (NbO2) nanoparticles can be adequate supports for Pt and facilitate further reducing the noble metal content in electrocatalysts for the oxygen reduction reaction. C1 [Sasaki, K.; Zhang, L.; Adzic, R. R.] Brookhaven Natl Lab, Ctr Funct Nanomat, Dept Chem, Upton, NY 11973 USA. RP Adzic, RR (reprint author), Brookhaven Natl Lab, Ctr Funct Nanomat, Dept Chem, Upton, NY 11973 USA. RI Zhang, Lihua/F-4502-2014 NR 46 TC 150 Z9 151 U1 8 U2 91 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 1 BP 159 EP 167 DI 10.1039/b709893f PG 9 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 243CL UT WOS:000251772400018 PM 18075695 ER PT J AU Hammons, JA Wang, W Ilavsky, J Pantoya, ML Weeks, BL Vaughn, MW AF Hammons, Joshua A. Wang, Wei Ilavsky, Jan Pantoya, Michelle L. Weeks, Brandon L. Vaughn, Mark W. TI Small angle X-ray scattering analysis of the effect of cold compaction of Al/MoO3 thermite composites SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID ALUMINUM NANOPOWDERS; NANOPARTICLES; OXIDATION; FRAGMENTATION; COMBUSTION; DISPERSION; BEHAVIOR; SIZE AB Nanothermites composed of aluminum and molybdenum trioxide (MoO3) have a high energy density and are attractive energetic materials. To enhance the surface contact between the spherical Al nanoparticles and the sheet-like MoO3 particles, the mixture can be cold-pressed into a pelleted composite. However, it was found that the burn rate of the pellets decreased as the density of the pellets increased, contrary to expectation. Ultra-small angle X-ray scattering (USAXS) data and scanning electron microscopy (SEM) were used to elucidate the internal structure of the Al nanoparticles, and nanoparticle aggregate in the composite. Results from both SEM imaging and USAXS analysis indicate that as the density of the pellet increased, a fraction of the Al nanoparticles are compressed into sintered aggregates. The sintered Al nanoparticles lost contrast after forming the larger aggregates and no longer scattered X-rays as individual particles. The sintered aggregates hinder the burn rate, since the Al nanoparticles that make them up can no longer diffuse freely as individual particles during combustion. Results suggest a qualitative relationship for the probability that nanoparticles will sinter, based on the particle sizes and the initial structure of their respective agglomerates, as characterized by the mass fractal dimension. C1 [Hammons, Joshua A.; Wang, Wei; Weeks, Brandon L.; Vaughn, Mark W.] Texas Tech Univ, Dept Chem Engn, Lubbock, TX 79409 USA. [Ilavsky, Jan] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. [Pantoya, Michelle L.] Texas Tech Univ, Dept Mech Engn, Lubbock, TX 79409 USA. RP Vaughn, MW (reprint author), Texas Tech Univ, Dept Chem Engn, Lubbock, TX 79409 USA. EM vaughn@ttu.edu RI Ilavsky, Jan/D-4521-2013; USAXS, APS/D-4198-2013; Weeks, Brandon/P-6331-2014; Vaughn, Mark/I-7150-2015 OI Ilavsky, Jan/0000-0003-1982-8900; Weeks, Brandon/0000-0003-2552-4129; Vaughn, Mark/0000-0002-2534-4497 NR 27 TC 2 Z9 2 U1 2 U2 15 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 1 BP 193 EP 199 DI 10.1039/b711456g PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 243CL UT WOS:000251772400022 PM 18075699 ER PT J AU Zubarev, DY Averkiev, BB Zhai, HJ Wang, LS Boldyrev, AI AF Zubarev, Dmitry Yu. Averkiev, Boris B. Zhai, Hua-Jin Wang, Lai-Sheng Boldyrev, Alexander I. TI Aromaticity and antiaromaticity in transition-metal systems SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID D-ORBITAL AROMATICITY; SIGMA-AROMATICITY; SQUARE-PLANAR; RING-CURRENT; 1,3-DIMETALLABENZENE DERIVATIVES; ELECTRON DELOCALIZATION; CRYSTAL-STRUCTURE; ALKALI-METAL; CLUSTERS; METALLABENZENES AB Aromaticity is an important concept in chemistry primarily for organic compounds, but it has been extended to compounds containing transition-metal atoms. Recent findings of aromaticity and antiaromaticity in all- metal clusters have stimulated further research in describing the chemical bonding, structures and stability in transition-metal clusters and compounds on the basis of aromaticity and antiaromaticity, which are reviewed here. The presence of d-orbitals endows much more diverse chemistry, structure and chemical bonding to transition-metal clusters and compounds. One interesting feature is the existence of a new type of aromaticity-delta-aromaticity, in addition to sigma- and pi-aromaticity which are the only possible types for main-group compounds. Another striking characteristic in the chemical bonding of transition-metal systems is the multifold nature of aromaticity, antiaromaticity or even conflicting aromaticity. Separate sets of counting rules have been proposed for cyclic transition-metal systems to account for the three types of sigma-, pi- and delta-aromaticity/antiaromaticity. The diverse transition- metal clusters and compounds reviewed here indicate that multiple aromaticity and antiaromaticity may be much more common in chemistry than one would anticipate. It is hoped that the current review will stimulate interest in further understanding the structure and bonding, on the basis of aromaticity and antiaromaticity, of other known or unknown transition-metal systems, such as the active sites of enzymes or other biomolecules which contain transition-metal atoms and clusters. C1 [Zhai, Hua-Jin; Wang, Lai-Sheng] Washington State Univ, Dept Phys, Richland, WA 99354 USA. [Wang, Lai-Sheng] Pacific NW Natl Lab, Div Chem & Mat Sci, Richland, WA 99352 USA. [Zubarev, Dmitry Yu.; Averkiev, Boris B.; Boldyrev, Alexander I.] Utah State Univ, Dept Chem & Biochem, Logan, UT 84322 USA. RP Wang, LS (reprint author), Washington State Univ, Dept Phys, 2710 Univ Dr, Richland, WA 99354 USA. EM ls.wang@pnl.gov; boldyrev@cc.usu.edu RI Boldyrev, Alexander/C-5940-2009 OI Boldyrev, Alexander/0000-0002-8277-3669 NR 77 TC 106 Z9 106 U1 5 U2 28 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 2 BP 257 EP 267 DI 10.1039/b713646c PG 11 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 253YO UT WOS:000252553700002 PM 18213412 ER PT J AU Hansen, N Klippenstein, SJ Westmoreland, PR Kasper, T Kohse-Hoinghaus, K Wang, J Cool, TA AF Hansen, N. Klippenstein, S. J. Westmoreland, P. R. Kasper, T. Kohse-Hoeinghaus, K. Wang, J. Cool, T. A. TI A combined ab initio and photoionization mass spectrometric study of polyynes in fuel-rich flames SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID CARBON-CHAIN MOLECULES; SHOCK-TUBE PYROLYSIS; SOOT FORMATION; THERMAL-DECOMPOSITION; LOW-PRESSURE; HYDROCARBON PYROLYSIS; DIAMOND DEPOSITION; NANOTUBE FORMATION; REACTION-MECHANISM; ETHYNYL RADICALS AB Polyynic structures in fuel-rich low-pressure flames are observed using VUV photoionization molecular-beam mass spectrometry. High-level ab initio calculations of ionization energies for C2nH2 (n = 1-5) and partially hydrogenated CnH4 (n = 7-8) polyynes are compared with photoionization e. ciency measurements in flames fuelled by allene, propyne, and cyclopentene. C2nH2 (n = 1-5) intermediates are unambiguously identified, while HC C-C C-CH = C = CH2, HC C-C C-C C-CH = CH2 (vinyltriacetylene) and HC C-C C-CH = CH-C CH are likely to contribute to the C7H4 and C8H4 signals. Mole fraction pro. les as a function of distance from the burner are presented. C7H4 and C8H4 isomers are likely to be formed by reactions of C2H and C4H radicals but other plausible formation pathways are also discussed. Heats of formation and ionization energies of several combustion intermediates have been determined for the first time. C1 [Hansen, N.] Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA. [Klippenstein, S. J.] Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. [Westmoreland, P. R.] Univ Massachusetts, Dept Chem Engn, Amherst, MA 01003 USA. [Kasper, T.; Kohse-Hoeinghaus, K.] Univ Bielefeld, Dept Chem, D-33615 Bielefeld, Germany. [Wang, J.; Cool, T. A.] Cornell Univ, Sch Appl & Engn Phys, Ithaca, NY 14853 USA. RP Hansen, N (reprint author), Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA. EM nhansen@sandia.gov; sjk@anl.gov RI Kohse-Hoinghaus, Katharina/A-3867-2012; Hansen, Nils/G-3572-2012; Kasper, Tina/A-2975-2017; OI Kasper, Tina/0000-0003-3993-5316; Klippenstein, Stephen/0000-0001-6297-9187 NR 69 TC 39 Z9 41 U1 1 U2 29 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 EI 1463-9084 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 3 BP 366 EP 374 DI 10.1039/b711578d PG 9 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 247TV UT WOS:000252106400003 PM 18174978 ER PT J AU Karagulian, F Lea, AS Dilbeck, CW Finlayson-Pitts, BJ AF Karagulian, Federico Lea, A. Scott Dilbeck, Christopher W. Finlayson-Pitts, Barbara J. TI A new mechanism for ozonolysis of unsaturated organics on solids: phosphocholines on NaCl as a model for sea salt particles SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID GAS-PHASE REACTIONS; SELF-ASSEMBLED MONOLAYERS; FLIGHT MASS-SPECTROMETRY; OH RADICAL FORMATION; AIR-WATER-INTERFACE; AEROSOL-PARTICLES; INFRARED SPECTROMETRY; HYDROGEN-PEROXIDE; HUMID CONDITIONS; FORMATION YIELDS AB The ozonolysis of an approximately one monolayer film of 1-oleoyl-2-palmitoyl-sn-glycero-3-phosphocholine (OPPC) on NaCl was followed in real time using diffuse reflection infrared Fourier transform spectrometry (DRIFTS) at 23 degrees C. Matrix-assisted laser desorption/ionization (MALDI) mass spectrometry and Auger electron spectroscopy were used to confirm the identification of the products. Ozone concentrations ranged from 1.7 x 10(12) to 7.0 x 10(13) molecules cm(-3) (70 ppb to 2.8 ppm). Upon exposure to O-3, there was a loss of C=C accompanied by the formation of a strong band at similar to 1110 cm(-1) due to the formation of a stable secondary ozonide (1,2,4-trioxolane, SOZ). The yield of the SOZ was smaller when the reaction was carried out in the presence of water vapor at concentrations corresponding to relative humidities between 2 and 25%. The dependencies of the rate of SOZ formation on the concentrations of ozone and water vapor are consistent with the initial formation of a primary ozonide (1,2,3-trioxolane, POZ) that can react with O3 or H2O in competition with its thermal decomposition to a Criegee intermediate and aldehyde. Estimates were obtained for the rate constants for the POZ thermal decomposition and for its reactions with O3 and H2O, as well as for the initial reaction of O3 with OPPC. The SOZ decomposed upon photolysis in the actinic region generating aldehydes, carboxylic acids and anhydrides. These studies show that the primary ozonide has a sufficiently long lifetime when formed on a solid substrate that direct reactions with O3 and H2O can compete with its thermal decomposition. In dry polluted atmospheres, ozone-alkene reactions may lead in part to the formation of stable secondary ozonides whose chemistry, photochemistry and toxicity should be taken into account in models of such regions. C1 [Karagulian, Federico; Dilbeck, Christopher W.; Finlayson-Pitts, Barbara J.] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA. [Lea, A. Scott] Pacific NW Natl Lab, WR Wiley Environm Sci Lab, Richland, WA 99352 USA. RP Finlayson-Pitts, BJ (reprint author), Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA. EM bjfinlay@uci.edu NR 81 TC 30 Z9 30 U1 1 U2 19 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 4 BP 528 EP 541 DI 10.1039/b712715d PG 14 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 248YS UT WOS:000252193800006 PM 18183314 ER PT J AU Zou, P Strecker, KE Ramirez-Serrano, J Jusinski, LE Taatjes, CA Osborn, DL AF Zou, Peng Strecker, Kevin E. Ramirez-Serrano, Jaime Jusinski, Leonard E. Taatjes, Craig A. Osborn, David L. TI Ultraviolet photodissociation of vinyl iodide: understanding the halogen dependence of photodissociation mechanisms in vinyl halides SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID AB-INITIO CALCULATIONS; FOURIER-TRANSFORM SPECTROSCOPY; CORRELATED MOLECULAR CALCULATIONS; BIMODAL ROTATIONAL DISTRIBUTION; ULTRAFAST INTERNAL-CONVERSION; POTENTIAL-ENERGY SURFACE; 193 NM PHOTODISSOCIATION; GAS-PHASE DECOMPOSITION; GAUSSIAN-BASIS SETS; MULTIPHOTON IONIZATION AB The photodissociation of vinyl iodide has been investigated at several wavelengths between 193 and 266 nm using three techniques: time-resolved Fourier transform emission spectroscopy, multiple pass laser absorption spectroscopy, and velocity-mapped ion imaging. The only dissociation channel observed is C-I bond cleavage to produce C2H3 (v, N) + I (P-2(J)) at all wavelengths investigated. Unlike photodissociation of other vinyl halides (C2H3X, X = F, Cl, Br), in which the HX product channel is significant, no HI elimination is observed. The angular and translational energy distributions of I atoms indicate that atomic products arise solely from dissociation on excited states with negligible contribution from internal conversion to the ground state. We derive an upper limit on the C-I bond strength of D-0(C2H3-I) <= 65 kcal mol(-1). The ground-state potential-energy surface of vinyl iodide is explored by ab initio calculations. We present a model in which the highest occupied molecular orbital in vinyl halides has increasing X(np(perpendicular to)) non-bonding character with increasing halogen mass. This change leads to reduced torsional force around the C-C bond in the excited state. Because the ground-state energy is highest when the CH2 plane is perpendicular to the CHX plane, a reduced torsional force in the excited state correlates with a lower rate for internal conversion compared to excited-state C-X bond emission. This model explains the gradual change in photodissociation mechanisms of vinyl halides from the dominance of internal conversion in vinyl fluoride to the dominance of excited-state dissociation in vinyl iodide. C1 [Zou, Peng; Strecker, Kevin E.; Ramirez-Serrano, Jaime; Jusinski, Leonard E.; Taatjes, Craig A.; Osborn, David L.] Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA. RP Osborn, DL (reprint author), Sandia Natl Labs, Combust Res Facil, POB 969, Livermore, CA 94551 USA. EM dlosbor@sandia.gov RI Osborn, David/A-2627-2009 NR 95 TC 12 Z9 12 U1 3 U2 22 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 EI 1463-9084 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 5 BP 713 EP 728 DI 10.1039/b712117b PG 16 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 254CS UT WOS:000252564600011 PM 19791455 ER PT J AU Ockwig, NW Cygan, RT Criscenti, LJ Nenoff, TM AF Ockwig, Nathan W. Cygan, Randall T. Criscenti, Louise J. Nenoff, Tina M. TI Molecular dynamics studies of nanoconfined water in clinoptilolite and heulandite zeolites SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID INELASTIC NEUTRON-SCATTERING; SUPERCOOLED CONFINED WATER; HYDROGEN-BONDED LIQUIDS; AB-INITIO CALCULATIONS; MESOSCOPIC CONFINEMENT; INFRARED-SPECTROSCOPY; COMPUTER-SIMULATION; GLASS-TRANSITION; CATION-EXCHANGE; HYDRATED IONS AB The complete periodic series of alkali and alkaline earth cation variants ( Li+, Na+, K+, Rb+, Cs+, Mg2+, Ca2+, Sr2+, and Ba2+) of clinoptilolite ( Si : Al = 5) and heulandite ( Si : Al = 3.5) aluminosilicate zeolites are examined by large-scale molecular dynamics utilizing a flexible SPC water and aluminosilicate force field. Calculated hydration enthalpies, radial distribution functions, and ion coordination environments are used to describe the energetic and structural components of extra-framework species while power spectra are used to examine the intermolecular dynamics. These data are correlated to evaluate the impact of ion-zeolite, ion-water, and water-zeolite interactions on the behavior of nanoconfined water. Analysis of the correlated data clearly indicates that the charge density of extra-framework cations appears to have the greatest influence on librational motions, while the anionic charge of the framework (i. e. Si : Al ratios) has a lesser impact. C1 [Ockwig, Nathan W.; Cygan, Randall T.; Criscenti, Louise J.] Sandia Natl Labs, Geochem Dept, Albuquerque, NM 87185 USA. [Nenoff, Tina M.] Sandia Natl Labs, Surface & Interfaces Sci Dept, Albuquerque, NM 87185 USA. RP Ockwig, NW (reprint author), Sandia Natl Labs, Geochem Dept, POB 5800, Albuquerque, NM 87185 USA. EM nockwig@sandia.gov NR 76 TC 19 Z9 19 U1 9 U2 33 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 EI 1463-9084 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 6 BP 800 EP 807 DI 10.1039/b711949f PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 257WW UT WOS:000252830600004 PM 18231682 ER PT J AU Ohisa, M Yamataka, H Dupuis, M Aida, M AF Ohisa, Masayuki Yamataka, Hiroshi Dupuis, Michel Aida, Misako TI Two-dimensional free-energy surface on the exchange reaction of alkyl chloride/chloride using the QM/MM-MC method SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID MIXED HAMILTONIAN MODEL; SOLVATED EXCITED-STATES; AQUEOUS-SOLUTION; ELECTRONIC-STRUCTURE; SN2 REACTION; ION-PAIRS; WATER; POTENTIALS; HYDRATION; ATOM AB Two-dimensional free-energy surfaces are calculated for alkyl chloride/chloride exchange/inversion reactions: Cl- + RCl (R = Me and t-Bu) surrounded by one hundred H2O molecules as a model of solvent. The methodology of free-energy calculation by perturbation theory based on a mixed-Hamiltonian model (QM/MM) combined with Monte Carlo sampling of the solvent configurations was used to obtain the changes in solvation free energy. We devised a special procedure to analyze the two-dimensional free-energy surfaces to gain unique insight into the differences in the reaction mechanisms between the two systems. The inversion reaction path for R = t-Bu on the free-energy surface is found to proceed in an asynchronous way within a concerted framework via the ion-pair region. This is in contrast to the R = Me system that proceeds as a typical S(N)2 reaction. C1 [Ohisa, Masayuki; Aida, Misako] Hiroshima Univ, Grad Sch Sci, Ctr Quantum Life Sci, Hiroshima 7398526, Japan. [Ohisa, Masayuki; Aida, Misako] Hiroshima Univ, Grad Sch Sci, Dept Chem, Hiroshima 7398526, Japan. [Yamataka, Hiroshi] Rikkyo Univ, Dept Chem, Coll Sci, Tokyo 171, Japan. [Dupuis, Michel] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Aida, M (reprint author), Hiroshima Univ, Grad Sch Sci, Ctr Quantum Life Sci, Hiroshima 7398526, Japan. EM maida@hiroshima-u.ac.jp RI Aida, Misako/D-1670-2010 OI Aida, Misako/0000-0001-8788-1071 NR 21 TC 6 Z9 6 U1 3 U2 8 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 6 BP 844 EP 849 DI 10.1039/b712565h PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 257WW UT WOS:000252830600009 PM 18231687 ER PT J AU Walser, ML Desyaterik, Y Laskin, J Laskin, A Nizkorodov, SA AF Walser, Maggie L. Desyaterik, Yury Laskin, Julia Laskin, Alexander Nizkorodov, Sergey A. TI High-resolution mass spectrometric analysis of secondary organic aerosol produced by ozonation of limonene SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID ATLANTA SUPERSITE EXPERIMENT; OH RADICAL FORMATION; GAS-PHASE REACTIONS; AIR-POLLUTION; BIOGENIC HYDROCARBONS; ATMOSPHERIC AEROSOLS; CHEMICAL-COMPOSITION; MOLECULAR-WEIGHT; ALPHA-PINENE; OZONE AB Chemical composition of secondary organic aerosol (SOA) formed from the ozone-initiated oxidation of limonene is characterized by high-resolution electrospray ionization mass spectrometry in both positive and negative ion modes. The mass spectra reveal a large number of both monomeric (m/z < 300) and oligomeric (m/z > 300) condensed products of oxidation. A combination of high resolving power (m/Delta m similar to 60000) and Kendrick mass defect analysis makes it possible to unambiguously determine the molecular composition of hundreds of individual compounds in SOA samples. Van Krevelen analysis shows that the SOA compounds are heavily oxidized, with average O:C ratios of 0.43 and 0.50 determined from the positive and negative ion mode spectra, respectively. A possible reaction mechanism for the formation of the first generation SOA molecular components is considered. The discussed mechanism includes known isomerization and addition reactions of the carbonyl oxide intermediates generated during the ozonation of limonene. In addition, it includes isomerization and decomposition pathways for alkoxy radicals resulting from unimolecular decomposition of carbonyl oxides that have been disregarded by previous studies. The isomerization reactions yield numerous products with a progressively increasing number of alcohol and carbonyl groups, whereas C-C bond scission reactions in alkoxy radicals shorten the carbon chain. Together these reactions yield a large number of isomeric products with broadly distributed masses. A qualitative agreement is found between the number and degree of oxidation of the predicted and measured reaction products in the monomer product range. C1 [Walser, Maggie L.; Nizkorodov, Sergey A.] Univ Calif Irvine, Dept Chem, Irvine, CA 92617 USA. [Desyaterik, Yury; Laskin, Alexander] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99354 USA. [Laskin, Julia] Pacific NW Natl Lab, Div Chem & Mat Sci, Richland, WA 99354 USA. RP Nizkorodov, SA (reprint author), Univ Calif Irvine, Dept Chem, Irvine, CA 92617 USA. EM nikorod@uci.edu RI Laskin, Julia/H-9974-2012; Laskin, Alexander/I-2574-2012; Nizkorodov, Sergey/I-4120-2014 OI Laskin, Julia/0000-0002-4533-9644; Laskin, Alexander/0000-0002-7836-8417; Nizkorodov, Sergey/0000-0003-0891-0052 NR 68 TC 74 Z9 74 U1 9 U2 64 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 7 BP 1009 EP 1022 DI 10.1039/b712620d PG 14 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 260MG UT WOS:000253013800011 PM 18259641 ER PT J AU Laskin, J Wang, P Hadjar, O AF Laskin, Julia Wang, Peng Hadjar, Omar TI Soft-landing of peptide ions onto self-assembled monolayer surfaces: an overview SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID RESONANCE MASS-SPECTROMETER; LOW-ENERGY COLLISIONS; THIN-FILM GROWTH; CHEMICAL-MODIFICATION; POLYATOMIC IONS; INDUCED DISSOCIATION; COVALENT IMMOBILIZATION; ION/SURFACE REACTIONS; PROTONATED PEPTIDES; REACTIVE COLLISIONS AB This review is focused on what has been learned in recent research studies concerned with fundamental aspects of soft-landing and reactive landing of peptide ions on self-assembled monolayer surfaces (SAMs). Peptide ions are particularly attractive model systems that provide important insights on the behavior of soft landed proteins, while SAMs provide a convenient and flexible platform for tailoring the interfacial properties of metals and semiconductor surfaces. Deposition of mass-selected ions on surfaces is accompanied by a number of processes including charge reduction, neutralization, covalent and non-covalent binding, and thermal desorption of ions and molecules from the substrate. Factors that affect the competition between these processes are discussed. C1 [Laskin, Julia; Wang, Peng; Hadjar, Omar] Pacific NW Natl Lab, Fundamental Sci Div, Richland, WA 99352 USA. RP Laskin, J (reprint author), Pacific NW Natl Lab, Fundamental Sci Div, POB 999,K8-88, Richland, WA 99352 USA. EM Julia.Laskin@pnl.gov RI Laskin, Julia/H-9974-2012 OI Laskin, Julia/0000-0002-4533-9644 NR 77 TC 76 Z9 77 U1 2 U2 26 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 8 BP 1079 EP 1090 DI 10.1039/b712710c PG 12 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 262FU UT WOS:000253135200001 PM 18270607 ER PT J AU Groenewold, GS Oomens, J de Jong, WA Gresham, GL McIlwain, ME Van Stipdonk, MJ AF Groenewold, G. S. Oomens, J. de Jong, W. A. Gresham, G. L. McIlwain, M. E. Van Stipdonk, M. J. TI Vibrational spectroscopy of anionic nitrate complexes of UO22+ and Eu3+ isolated in the gas phase SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID ENERGY-ADJUSTED PSEUDOPOTENTIALS; COLLISION-INDUCED DISSOCIATION; RESONANCE MASS-SPECTROMETRY; INFRARED-SPECTROSCOPY; ELECTROSPRAY-IONIZATION; ARGON MATRIX; NITRIC-ACID; ABINITIO PSEUDOPOTENTIALS; AQUEOUS-SOLUTION; PARAMETER SETS AB Wavelength-selective infrared multiple photon photo-dissociation (IRMPD) was used to generate spectra of anionic nitrate complexes of UO22+ and Eu3+ in the mid-infrared region. Similar spectral patterns were observed for both species, including splitting of the antisymmetric O-N-O stretch into high and low frequency components with the magnitude of the splitting consistent with attachment of nitrate to a strong Lewis acid center. The frequencies measured for [UO2(NO3)(3)](-) were within a few cm(-1) of those measured in the condensed phase, the best agreement yet achieved for a comparison of IRMPD with condensed phase absorption spectra. In addition, experimentally-determined values were in good general agreement with those predicted by DFT calculations, especially for the antisymmetric UO2 stretch. The spectrum from the [UO2(NO3)(3)](-) was compared with that of [Eu(NO3)(4)](-), which showed that nitrate was bound more strongly to the Eu3+ metal center, consistent with its higher charge. The spectrum of a unique uranyl-oxo species having an elemental composition [UO9N2](-) was also acquired, that contained nitrate absorptions suggestive of a [UO2(NO3)(2)(O)](-) structure; the spectrum lacked bands indicative of nitrite and superoxide that would be indicative of an alternative [UO2(NO3)(NO2)(O-2)](-) structure. C1 [Groenewold, G. S.; Gresham, G. L.; McIlwain, M. E.] Idaho Natl Lab, Idaho Falls, ID 83415 USA. [Oomens, J.] FOM Inst Voor Plasmafys, Nieuwegein, Netherlands. [de Jong, W. A.] Pacific NW Natl Lab, Richland, WA 99352 USA. [Van Stipdonk, M. J.] Wichita State Univ, Wichita, KS USA. RP Groenewold, GS (reprint author), Idaho Natl Lab, Idaho Falls, ID 83415 USA. EM gary.groenewold@inl.gov; joso@rijnh.nl; bert.dejong@pnl.gov; garold.gresham@inl.gov; michael.mcilwain@inl.gov; mike.vanstipdonk@wichita.edu RI DE JONG, WIBE/A-5443-2008; Oomens, Jos/F-9691-2015 OI DE JONG, WIBE/0000-0002-7114-8315; NR 67 TC 34 Z9 34 U1 3 U2 19 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 8 BP 1192 EP 1202 DI 10.1039/b715337f PG 11 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 262FU UT WOS:000253135200015 PM 18270621 ER PT J AU Garand, E Goebbert, D Santambrogio, G Janssens, E Lievens, P Meijer, G Neumark, DM Asmis, KR AF Garand, Etienne Goebbert, Daniel Santambrogio, Gabriele Janssens, Ewald Lievens, Peter Meijer, Gerard Neumark, Daniel M. Asmis, Knut R. TI Vibrational spectra of small silicon monoxide cluster cations measured by infrared multiple photon dissociation spectroscopy SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID AB-INITIO CALCULATIONS; OXIDE CLUSTERS; GAS-PHASE; NANOPARTICLES; NANOWIRES; ENVIRONMENTS; GROWTH; SI3O3; SI2O2; DUST AB The first gas-phase infrared spectra of silicon monoxide cations (SiO)(n)(+), n = 3-5, using multiple photon dissociation in the 550-1250 cm(-1) frequency range, are reported. All clusters studied here fragment via loss of a neutral SiO unit. The experimental spectra are compared to simulated linear absorption spectra from calculated low energy isomers for each cluster. This analysis indicates that a "ring'' isomer is the primary contributor to the (SiO)(3)(+) spectrum, that the (SiO)(4)(+) spectrum results from two close-lying bicyclic ring isomers, and that the (SiO)(5)(+) spectrum is from a bicyclic ring with a central, fourfold-coordinated Si atom. Experiment and theory indicate that the energies and energetic orderings of (SiO)(n)(+) isomers differ from those for neutral (SiO)(n) clusters. C1 [Garand, Etienne; Neumark, Daniel M.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Goebbert, Daniel; Meijer, Gerard; Asmis, Knut R.] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany. [Santambrogio, Gabriele] Free Univ Berlin, Inst Expt Phys, D-14195 Berlin, Germany. [Janssens, Ewald] Katholieke Univ Leuven, Lab Solid State Phys & Magnetism, B-3001 Louvain, Belgium. [Janssens, Ewald] Katholieke Univ Leuven, Inst Nanoscale Phys & Chem, B-3001 Louvain, Belgium. [Neumark, Daniel M.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Neumark, DM (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. EM dneumark@berkeley.edu; asmis@fhi-berlin.mpg.de RI Neumark, Daniel/B-9551-2009; Meijer, Gerard/D-2141-2009; Santambrogio, Gabriele/B-1357-2009; Asmis, Knut/N-5408-2014; OI Neumark, Daniel/0000-0002-3762-9473; Santambrogio, Gabriele/0000-0001-5932-7049; Asmis, Knut/0000-0001-6297-5856; Lievens, Peter/0000-0001-6570-0559; Janssens, Ewald/0000-0002-5945-1194; Garand, Etienne/0000-0001-5062-5453 NR 26 TC 13 Z9 13 U1 1 U2 18 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 11 BP 1502 EP 1506 DI 10.1039/b716627c PG 5 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 271AL UT WOS:000253761200002 PM 18327305 ER PT J AU Wang, P Hadjar, O Gassman, PL Laskin, J AF Wang, Peng Hadjar, Omar Gassman, Paul L. Laskin, Julia TI Reactive landing of peptide ions on self-assembled monolayer surfaces: an alternative approach for covalent immobilization of peptides on surfaces SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID RESONANCE MASS-SPECTROMETER; POLYATOMIC IONS; INDUCED DISSOCIATION; PREPARATIVE SOFT; CELL-ADHESION; COLLISIONS; ESTER; BIOMOLECULES; INSTRUMENT; ACTIVATION AB Soft landing of mass-selected peptide ions onto reactive self-assembled monolayer surfaces (SAMs) was performed using a newly constructed ion deposition apparatus. SAM surfaces before and after soft landing were characterized ex situ using time-of-flight secondary-ion mass spectrometry (TOF-SIMS) and infrared reflection-absorption spectroscopy (IRRAS). We demonstrate that reactive landing (RL) results in efficient covalent linking of lysine-containing peptides onto the SAM of N-hydroxysuccinimidyl ester-terminated alkylthiol on gold (NHS-SAM). Systematic studies of the factors that affect the efficiency of RL revealed that the reaction takes place upon collision and is promoted by the kinetic energy of the ion. The efficiency of RL is maximized at ca. 40 eV collision energy. At high collision energies the RL efficiency decreases because of the competition with scattering of ions of the surface. The reaction yield is independent of the charge state of the projectile ions, suggesting that peptide ions undergo efficient neutralization upon collision. Chemical and physical properties of the SAM surface are also important factors that affect the outcome of RL. The presence of chemically reactive functional groups on the SAM surface significantly improves the reaction efficiency. RL of mass- and energy-selected peptide ions on surfaces provides a highly specific approach for covalent immobilization of biological molecules onto SAM surfaces. C1 [Laskin, Julia] Pacific NW Natl Lab, Fundamental Sci Div, Richland, WA 99352 USA. [Wang, Peng; Hadjar, Omar; Gassman, Paul L.] Pacific NW Natl Lab, Fundamental Sci Directorate, Richland, WA 99352 USA. RP Laskin, J (reprint author), Pacific NW Natl Lab, Fundamental Sci Div, Richland, WA 99352 USA. EM Julia.Laskin@pnl.gov RI Laskin, Julia/H-9974-2012 OI Laskin, Julia/0000-0002-4533-9644 NR 47 TC 56 Z9 56 U1 1 U2 17 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 11 BP 1512 EP 1522 DI 10.1039/b717617a PG 11 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 271AL UT WOS:000253761200004 PM 18327307 ER PT J AU Furuhama, A Dupuis, M Hirao, K AF Furuhama, Ayako Dupuis, Michel Hirao, Kimihiko TI Application of a kinetic energy partitioning scheme for ab initio molecular dynamics to reactions associated with ionization in water tetramers SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID FOURIER-TRANSFORM ANALYSIS; VIBRATIONAL-SPECTRA; LIQUID WATER; ATOMIC FLUCTUATIONS; COLLISION REACTION; 1ST-ROW ELEMENTS; BASIS-SETS; CLUSTERS; SIMULATION; REARRANGEMENT AB We analyze the short- time dynamics of ' cyclic' and ' branched' water tetramers after an ionization event, with the aid of a scheme that partitions the kinetic energy of a solute plus solvent system into separate solute and solvent ( or bath) contributions, using instantaneous internal coordinates and atomic velocities. The analysis supports the partitioning of the tetrameric systems into two subsystems, a ' reactive trimer' and a ' solvent' molecule. The partitioned kinetic energy exhibits two features, a broad peak assigned to the interaction between the two sub- systems and a sharper peak arising from the proton transfer that occurs upon ionization. It is found that the stability of the hydroxyl radical formed upon ionization is sensitive to the configuration of the water molecules around the ionized water at the moment of the ionization event. C1 [Furuhama, Ayako] Univ Tokyo, Dept Appl Chem, Sch Engn, Tokyo 1138656, Japan. [Furuhama, Ayako; Dupuis, Michel] Pacific NW Natl Lab, Div Chem Sci, Richland, WA 99352 USA. [Hirao, Kimihiko] Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3320012, Japan. RP Furuhama, A (reprint author), Univ Tokyo, Dept Appl Chem, Sch Engn, Tokyo 1138656, Japan. RI Hirao, Kimihiko/N-5483-2015 NR 40 TC 17 Z9 17 U1 1 U2 7 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 15 BP 2033 EP 2042 DI 10.1039/b713456h PG 10 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 283KJ UT WOS:000254634800006 PM 18688356 ER PT J AU Huang, JS Kingsbury, S Kertesz, M AF Huang, Jingsong Kingsbury, Stephanie Kertesz, Miklos TI Crystal packing of TCNQ anion pi-radicals governed by intermolecular covalent pi-pi bonding: DFT calculations and statistical analysis of crystal structures SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID ELECTRONIC-STRUCTURE; CORRELATION-ENERGY; TRANSFER INTEGRALS; CHARGE-TRANSPORT; DIMERS; TETRACYANOQUINODIMETHANE; BIPHENALENYL; DENSITY; DIMERIZATION; FLUCTUATIONS AB On the basis of a thorough Cambridge Structural Database survey, we present a statistical analysis of the packing of TCNQ anion pi-radicals in TCNQ charge transfer salts, which reveals three packing motifs between neighboring TCNQs: one with a zero longitudinal offset and an approximate 1 angstrom transversal offset, another with an approximate 2 angstrom longitudinal offset and zero transversal offset, and the third with a relatively long sigma-bond in the length of r = 1.6-1.7 angstrom connecting two TCNQ fragments. Along with the statistical analysis of the crystal structures, we also present density functional theory calculations of the total energy, covalent pi-pi bonding interaction energy, and Coulombic repulsion energy for the [TCNQ](2)(2-) pi-dimers with various packing geometries. We find that the interactions between TCNQ anion pi-radicals include contributions from intermolecular covalent pi-pi bonding interaction and local dipole repulsions, in addition to Coulombic repulsion, van der Waals and the attractive electrostatic forces between counter-cations and TCNQ anions pointed out recently by other groups for TCNE anion radicals. We describe an approximate formula for intermolecular interaction energy, E(int) = E(coul) + E(bond) + E(vdW), for systems in vacuum, while in the solid state Ecoul is compensated by the attractive electrostatic forces between counter-cations and TCNQ anions. We conclude that the crystal packing of TCNQ molecules in their charge transfer salts is predominantly determined by the intermolecular covalent pi-pi bonding term, E(bond). C1 [Huang, Jingsong; Kertesz, Miklos] Georgetown Univ, Dept Chem, Washington, DC 20057 USA. [Kingsbury, Stephanie] Carthage Coll, Dept Chem, Kenosha, WI 53140 USA. RP Huang, JS (reprint author), Oak Ridge Natl Lab, Bethel Valley Rd, Oak Ridge, TN 37831 USA. EM huangj3@ornl.gov; kertesz@georgetown.edu RI Huang, Jingsong/A-2789-2008; Kertesz, Miklos/E-7122-2010 OI Huang, Jingsong/0000-0001-8993-2506; Kertesz, Miklos/0000-0002-7930-3260 NR 52 TC 37 Z9 38 U1 3 U2 23 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 19 BP 2625 EP 2635 DI 10.1039/b717752f PG 11 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 299ES UT WOS:000255739200006 PM 18464977 ER PT J AU Yu, Y Ezell, MJ Zelenyuk, A Imre, D Alexander, L Ortega, J Thomas, JL Gogna, K Tobias, DJ D'Anna, B Harmon, CW Johnson, SN Finlayson-Pitts, BJ AF Yu, Yong Ezell, Michael J. Zelenyuk, Alla Imre, Dan Alexander, Liz Ortega, John Thomas, Jennie L. Gogna, Karun Tobias, Douglas J. D'Anna, Barbara Harmon, Chris W. Johnson, Stanley N. Finlayson-Pitts, Barbara J. TI Nitrate ion photochemistry at interfaces: a new mechanism for oxidation of alpha-pinene SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Review ID SECONDARY ORGANIC AEROSOL; REACTION-MASS-SPECTROMETRY; LIQUID-VAPOR INTERFACE; GAS-PHASE REACTIONS; MOLECULAR-DYNAMICS SIMULATIONS; OH-INITIATED OXIDATION; PARTICLE MESH EWALD; BETA-PINENE; PTR-MS; PARTICULATE PRODUCTS AB The photooxidation of 0.6-0.9 ppm alpha-pinene in the presence of a deliquesced thin film of NaNO3, and for comparison increasing concentrations of NO2, was studied in a 100 L Teflon (R) chamber at relative humidities from 72-88% and temperatures from 296-304 K. The loss of alpha-pinene and the formation of gaseous products were followed with time using proton transfer mass spectrometry. The yields of gas phase products were smaller in the NaNO3 experiments than in NO2 experiments. In addition, pinonic acid, pinic acid, trans-sobrerol and other unidentifed products were detected in the extracts of the wall washings only for the NaNO3 photolysis. These data indicate enhanced loss of alpha-pinene at the NaNO3 thin film during photolysis. Supporting the experimental results are molecular dynamics simulations which predict that alpha-pinene has an affinity for the surface of the deliquesced nitrate thin film, enhancing the opportunity for oxidation of the impinging organic gas during the nitrate photolysis. This new mechanism of oxidation of organics may be partially responsible for the correlation between nitrate and the organic component of particles observed in many field studies, and may also contribute to the missing source of SOA needed to reconcile model predictions and field measurements. In addition, photolysis of nitrate on surfaces in the boundary layer may lead to oxidation of co-adsorbed organics. C1 [Yu, Yong; Ezell, Michael J.; Thomas, Jennie L.; Gogna, Karun; Tobias, Douglas J.; D'Anna, Barbara; Harmon, Chris W.; Johnson, Stanley N.; Finlayson-Pitts, Barbara J.] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA. [Zelenyuk, Alla; Alexander, Liz; Ortega, John] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99354 USA. [Imre, Dan] Imre Consulting, Richland, WA 99352 USA. RP Finlayson-Pitts, BJ (reprint author), Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA. EM bjfinlay@uci.edu RI Yu, Yong/G-6445-2010; Tobias, Douglas/B-6799-2015 NR 110 TC 22 Z9 22 U1 2 U2 37 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 EI 1463-9084 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 21 BP 3063 EP 3071 DI 10.1039/b719495a PG 9 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 304JY UT WOS:000256107000004 PM 18688369 ER PT J AU Starr, DE Wong, EK Worsnop, DR Wilson, KR Bluhm, H AF Starr, David E. Wong, Ed K. Worsnop, Douglas R. Wilson, Kevin R. Bluhm, Hendrik TI A combined droplet train and ambient pressure photoemission spectrometer for the investigation of liquid/vapor interfaces SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID FREQUENCY VIBRATIONAL SPECTROSCOPY; RAY PHOTOELECTRON-SPECTROSCOPY; ELECTRON-SPECTROSCOPY; VAPOR INTERFACE; TEMPERATURE-DEPENDENCE; MASS ACCOMMODATION; MOLECULAR-DYNAMICS; FORCE MICROSCOPY; AQUEOUS-SOLUTION; SURFACE-TENSION AB We describe a combined ambient pressure photoelectron spectroscopy/droplet train apparatus for investigating the nature and heterogeneous chemistry of liquid/vapor interfaces. In this instrument a liquid droplet train with typical droplet diameters from 50-150 mu m is produced by a vibrating orifice aerosol generator (VOAG). The droplets are irradiated by soft X-rays (100-1500 eV) in front of the entrance aperture of a differentially pumped electrostatic lens system that transfers the emitted electrons into a conventional hemispherical electron analyzer. The photoemission experiments are performed at background pressures of up to several Torr, which allows the study of environmentally important liquid/vapor interfaces, in particular aqueous solutions, under equilibrium conditions. The exposure time of the droplet surface to the background gases prior to the XPS measurement can be varied, which will allow future kinetic measurements of gas uptake on liquid surfaces. As an example, a measurement of the surface composition of a chi = 0.21 aqueous methanol solution is presented. The concentration of methanol at the vapor/liquid interface is enhanced by a factor of about 3 over the bulk value, while the expected bulk value is recovered at depths larger than about 1.5 nm. C1 [Starr, David E.; Wilson, Kevin R.; Bluhm, Hendrik] Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. [Worsnop, Douglas R.] Aerodyne Res Inc, Billerica, MA 01821 USA. RP Starr, DE (reprint author), Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. EM hbluhm@lbl.gov RI Worsnop, Douglas/D-2817-2009 OI Worsnop, Douglas/0000-0002-8928-8017 NR 49 TC 28 Z9 28 U1 5 U2 38 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 21 BP 3093 EP 3098 DI 10.1039/b800717a PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 304JY UT WOS:000256107000008 PM 18688373 ER PT J AU Mul, G Wasylenko, W Hamdy, MS Frei, H AF Mul, Guido Wasylenko, Walter Hamdy, M. Sameh Frei, Heinz TI Cyclohexene photo-oxidation over vanadia catalyst analyzed by time resolved ATR-FT-IR spectroscopy SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID MESOPOROUS SILICA; LIQUID-PHASE; OXIDATION; EPOXIDATION; STABILITY; TITANIUM; PROPANE; TUD-1; WATER; OXIDE AB Vanadia was incorporated in the 3-D mesoporous material TUD-1 with a loading of 2% w/w vanadia. The performance in the selective photo-oxidation of liquid cyclohexene was investigated using ATR-FT-IR spectroscopy. Under continuous illumination at 458 nm a significant amount of product, i.e. cyclohexenone, was identified. This demonstrates for the first time that hydroxylated vanadia centers in mesoporous materials can be activated by visible light to induce oxidation reactions. Using the rapid scan method, a strong perturbation of the vanadyl environment could be observed in the selective oxidation process induced by a 458 nm laser pulse of 480 ms duration. This is proposed to be caused by interaction of the catalytic centre with a cyclohexenyl hydroperoxide intermediate. The restoration of the vanadyl environment could be kinetically correlated to the rate of formation of cyclohexenone, and is explained by molecular rearrangement and dissociation of the peroxide to ketone and water. The ketone diffuses away from the active center and ATR infrared probing zone, resulting in a decreasing ketone signal on the tens of seconds time-scale after initiation of the photoreaction. This study demonstrates the high potential of time resolved ATR FT-IR spectroscopy for mechanistic studies of liquid phase reactions by not only monitoring intermediates and products, but also by correlating the temporal behavior of these species to molecular changes of the vanadyl catalytic site. C1 [Mul, Guido; Hamdy, M. Sameh] Tech Univ Delft, NL-2628 BL Delft, Netherlands. [Wasylenko, Walter; Frei, Heinz] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA. RP Mul, G (reprint author), Tech Univ Delft, Julianalaan 136, NL-2628 BL Delft, Netherlands. RI Group, CE/C-3853-2009 NR 24 TC 14 Z9 14 U1 3 U2 23 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 21 BP 3131 EP 3137 DI 10.1039/b800314a PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 304JY UT WOS:000256107000013 PM 18688378 ER PT J AU Braams, BJ Yu, HG AF Braams, Bastiaan J. Yu, Hua-Gen TI Potential energy surface and quantum dynamics study of rovibrational states for HO(3) (X(2) A '') SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID INFRARED ACTION SPECTROSCOPY; ALKYL HYDROTRIOXIDES ROOOH; HYDROGEN TRIOXIDE HOOOH; AB-INITIO; TETRAATOMIC MOLECULES; RATE CONSTANTS; RADICALS; WATER; MECHANISM; OZONATION AB An analytic potential energy surface has been constructed by fitting to about 28 thousand energy points for the electronic ground-state (X(2) A '') of HO(3). The energy points are calculated using a hybrid density functional HCTH and a large basis set aug-cc-pVTZ, i.e., a HCTH/aug-cc-pVTZ density functional theory (DFT) method. The DFT calculations show that the trans-HO(3) isomer is the global minimum with a potential well depth of 9.94 kcal mol(-1) with respect to the OH + O(2) asymptote. The equilibrium geometry of the cis-HO(3) conformer is located 1.08 kcal mol(-1) above that of the trans-HO(3) one with an isomerization barrier of 2.41 kcal mol(-1) from trans- to cis-HO(3). By using this surface, a rigorous qu'antum dynamics (QD) study has been carried out for computing the rovibrational energy levels of HO(3). The calculated results determine a dissociation energy of 6.15 kcal mol(-1), which is in excellent agreement with the experimental value of Lester et al. C1 [Braams, Bastiaan J.] Emory Univ, Dept Math & Comp Sci, Atlanta, GA 30322 USA. [Yu, Hua-Gen] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. RP Braams, BJ (reprint author), Emory Univ, Dept Math & Comp Sci, Atlanta, GA 30322 USA. EM braams@maths.emory.edu; hgy@bnl.gov RI Braams, Bastiaan/E-7687-2011; Yu, Hua-Gen/N-7339-2015 OI Braams, Bastiaan/0000-0003-4086-9969; NR 48 TC 22 Z9 22 U1 1 U2 10 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 21 BP 3150 EP 3155 DI 10.1039/b801928b PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 304JY UT WOS:000256107000014 PM 18688380 ER PT J AU Van Stipdonk, MJ Kerstetter, DR Leavitt, CM Groenewold, GS Steill, J Oomens, J AF Van Stipdonk, Michael J. Kerstetter, Dale R. Leavitt, Christopher M. Groenewold, Gary S. Steill, Jeffrey Oomens, Jos TI Spectroscopic investigation of H atom transfer in a gas-phase dissociation reaction: McLafferty rearrangement of model gas-phase peptide ions SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID COLLISION-INDUCED DISSOCIATION; TANDEM MASS-SPECTROMETRY; MAIN FRAGMENTATION PATHWAYS; PROTONATED PEPTIDES; AMINO-ACIDS; INTRAMOLECULAR MIGRATION; AMIDE HYDROGENS; ELECTROSPRAY-IONIZATION; INFRARED-SPECTROSCOPY; METHYL-ESTERS AB Wavelength-selective infrared multiple-photon photodissociation (WS-IRMPD) was used to study isotopically-labeled ions generated by McLafferty rearrangement of nicotinyl-glycine-tert-butyl ester and betaine-glycine-tert-butyl ester. The tert-butyl esters were incubated in a mixture of D(2)O and CH(3)OD to induce solution-phase hydrogen-deuterium exchange and then converted to gas-phase ions using electrospray ionization. McLafferty rearrangement was used to generate the free-acid forms of the respective model peptides through transfer of an H atom and elimination of butene. The specific aim was to use vibrational spectra generated by WS-IRMPD to determine whether the H atom remains at the acid group, or migrates to one or more of the other exchangeable sites. Comparison of the IRMPD results in the region from 1200-1900 cm(-1) to theoretical spectra for different isotopically-labeled isomers clearly shows that the H atom is situated at the C-terminal acid group and migration to amide positions is negligible on the time scale of the experiment. The results of this study suggest that use of the McLafferty rearrangement for peptide esters could be an effective approach for generation of H-atom isotope tracers, in situ, for subsequent investigation of intramolecular proton migration during peptide fragmentation studies. C1 [Van Stipdonk, Michael J.; Kerstetter, Dale R.; Leavitt, Christopher M.] Wichita State Univ, Wichita, KS 67260 USA. [Groenewold, Gary S.] Idaho Natl Lab, Idaho Falls, ID 83415 USA. [Steill, Jeffrey; Oomens, Jos] EURATOM, FOM, Inst Plasmafys, Nieuwegein, Netherlands. RP Van Stipdonk, MJ (reprint author), Wichita State Univ, Wichita, KS 67260 USA. EM mike.vanstipdonk@wichita.edu; gary.groenewold@inl.gov RI Oomens, Jos/F-9691-2015 NR 72 TC 10 Z9 10 U1 3 U2 16 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 22 BP 3209 EP 3221 DI 10.1039/b802314j PG 13 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 304MX UT WOS:000256114700004 PM 18500397 ER PT J AU Strasser, P Koha, S Greeley, J AF Strasser, Peter Koha, Shirlaine Greeley, Jeff TI Voltammetric surface dealloying of Pt bimetallic nanoparticles: an experimental and DFT computational analysis SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID PLATINUM-MONOLAYER ELECTROCATALYSTS; OXYGEN REDUCTION REACTION; ELECTROLYTE FUEL-CELLS; ALLOY CATALYSTS; DISK ELECTRODE; MORPHOLOGICAL CHARACTERIZATION; UNDERPOTENTIAL DEPOSITION; SELECTIVE DISSOLUTION; BINARY-ALLOYS; METAL ALLOYS AB Voltammetric dealloying of bimetallic platinum-copper (Pt-Cu) alloys has been shown to be an effective strategy to modify the surface electrocatalytic reactivity of Pt bimetallic nanoparticles (S. Koh and P. Strasser, J. Am. Chem. Soc., 2007, 129, 12624). Using cyclic voltammetry and structural XRD studies, we systematically characterize the Pt-Cu precursor compounds as well as the early stages of the selective Cu surface dissolution (dealloying) process for Pt(25)Cu(75), Pt(50)Cu(50), and Pt(75)Cu(25) alloy nanoparticles annealed at both low and high temperature. We also assess the impact of the synthesis conditions on the electrocatalytic reactivity for the oxygen reduction reaction (ORR). To gain atomistic insight into the observed voltammetric profiles, we compare our experimental results with periodic DFT calculations of trends in the thermodynamics of surface Cu dissolution potentials from highly stepped and kinked Pt(854) single crystal surfaces. The modeling suggests a dependence of the electrochemical Cu dissolution potentials on the detailed atomic environment (coordination number, nature of coordinating atoms) of the bimetallic Pt-Cu surfaces. The DFT-predicted shifts in electrochemical Cu dissolution potentials are shown to qualitatively account for the observed voltammetric profiles during Cu dealloying. Our study suggests that metal-specific energetics have to be taken into account to explain the detailed dealloying behavior of bimetallic surfaces. C1 [Strasser, Peter; Koha, Shirlaine] Univ Houston, Dept Chem & Biomol Engn, Houston, TX 77204 USA. [Greeley, Jeff] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. [Strasser, Peter] Tech Univ Berlin, Inst Chem, D-10624 Berlin, Germany. RP Strasser, P (reprint author), Univ Houston, Dept Chem & Biomol Engn, Houston, TX 77204 USA. EM pstrasser@uh.edu RI Strasser, Peter/A-1868-2012 NR 96 TC 131 Z9 131 U1 5 U2 102 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 25 BP 3670 EP 3683 DI 10.1039/b803717e PG 14 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 315KJ UT WOS:000256877200009 PM 18563228 ER PT J AU Berry, JF George, SD Neese, F AF Berry, John F. George, Serena DeBeer Neese, Frank TI Electronic structure and spectroscopy of "superoxidized" iron centers in model systems: theoretical and experimental trends SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID DENSITY-FUNCTIONAL CALCULATIONS; RAY-ABSORPTION SPECTROSCOPY; TRANSITION-METAL-COMPLEXES; ALPHA-KETOGLUTARATE DIOXYGENASE; NONHEME OXOIRON(IV) COMPLEX; ZETA VALENCE QUALITY; SPIN FE(IV) COMPLEX; GAUSSIAN-BASIS SETS; C-H HYDROXYLATION; FE-IV=O COMPLEXES AB Recent advances in synthetic chemistry have led to the discovery of "superoxidized'' iron centers with valencies Fe( V) and Fe( VI) [K. Meyer et al., J. Am. Chem. Soc., 1999, 121, 4859 - 4876; J. F. Berry et al., Science, 2006, 312, 1937 - 1941; F. T. de Oliveira et al., Science, 2007, 315, 835 - 838.]. Furthermore, in recent years a number of high- valent Fe(IV) species have been found as reaction intermediates in metalloenzymes and have also been characterized in model systems [C. Krebs et al., Acc. Chem. Res., 2007, 40, 484-492; L. Que, Jr, Acc. Chem. Res., 2007, 40, 493 - 500.]. These species are almost invariably stabilized by a highly basic ligand Xn- which is either O2- or N3-. The di. erences in structure and bonding between oxo- and nitrido species as a function of oxidation state and their consequences on the observable spectroscopic properties have never been carefully assessed. Hence, fundamental di. erences between high- valent iron complexes having either Fe=O or Fe=N multiple bonds have been probed computationally in this work in a series of hypothetical trans[FeO(NH3)(4)OH](+/2+/3+) (1-3) and trans-[FeN(NH3) 4OH](0/2+/3+) (4-6) complexes. All computational properties are permeated by the intrinsically more covalent character of the Fe=N multiple bond as compared to the Fe=O bond. This di. erence is likely due to di. erences in Z* between N and O that allow for better orbital overlap to occur in the case of the FeQN multiple bond. Spin- state energetics were addressed using elaborate multireference ab initio computations that show that all species 1-6 have an intrinsic preference for the low-spin state, except in the case of 1 in which S = 1 and S = 2 states are very close in energy. In addition to Mossbauer parameters, g-tensors, zero-field splitting and iron hyper. ne couplings, X- ray absorption Fe K pre-edge spectra have been simulated using time- dependent DFT methods for the. rst time for a series of compounds spanning the highvalent states +4, +5, and +6 for iron. A remarkably good correlation of these simulated pre- edge features with experimental data on isolated high- valent intermediates has been found, allowing us to assign the main pre-edge features to excitations into the empty Fe d(z2) orbital, which is able to mix with Fe 4(pz), allowing an e. cient mechanism for the intensi. cation of pre-edge features. C1 [Berry, John F.] Univ Wisconsin, Madison, WI 53706 USA. [George, Serena DeBeer] Stanford Univ, SLAC, Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA. [Neese, Frank] Univ Bonn, Lehrstuhl Theoret Chem, D-53115 Bonn, Germany. RP Berry, JF (reprint author), Univ Wisconsin, 1101 Univ Ave, Madison, WI 53706 USA. EM berry@chem.wisc.edu; debeer@stanford.edu; neese@thch.uni-bonn.de RI DeBeer, Serena/G-6718-2012; Tunega, Daniel/B-3767-2015; Neese, Frank/J-4959-2014 OI Neese, Frank/0000-0003-4691-0547 FU NCRR NIH HHS [5 P41 RR001209] NR 100 TC 53 Z9 53 U1 2 U2 15 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 EI 1463-9084 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 30 BP 4361 EP 4374 DI 10.1039/b801803k PG 14 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 329RZ UT WOS:000257889600001 PM 18654674 ER PT J AU Rempe, SB Mattsson, TR Leung, K AF Rempe, Susan B. Mattsson, Thomas R. Leung, K. TI On "the complete basis set limit" and plane-wave methods in first-principles simulations water SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID DENSITY-FUNCTIONAL THEORY; 1ST PRINCIPLES SIMULATIONS; LIQUID WATER; AB-INITIO; APPROXIMATION; ACCURACY AB Water structure, measured by the height of the first peak in oxygen-oxygen radial distributions, is converged with respect to plane-wave basis energy cutoffs for ab initio molecular dynamics simulations, confirming the reliability of plane-wave methods. C1 [Rempe, Susan B.; Mattsson, Thomas R.; Leung, K.] Sandia Natl Labs, Albuquerque, NM USA. RP Rempe, SB (reprint author), Sandia Natl Labs, MS 0895, Albuquerque, NM USA. EM slrempe@sandia.gov RI Mattsson, Thomas/B-6057-2009; Rempe, Susan/H-1979-2011 NR 21 TC 23 Z9 23 U1 3 U2 10 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 EI 1463-9084 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 32 BP 4685 EP 4687 DI 10.1039/b810017a PG 3 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 335DU UT WOS:000258271800003 PM 18688510 ER PT J AU Feibelman, PJ AF Feibelman, Peter J. TI Lattice match in density functional calculations: ice Ih vs. beta-AgI SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID GENERALIZED GRADIENT APPROXIMATION; AUGMENTED-WAVE METHOD; WEATHER-MODIFICATION; THERMAL-EXPANSION; PT(111); FILMS; TRANSITION; EXCHANGE; SYSTEMS; METALS AB Density functional optimizations of the crystal parameters of ice Ih and beta-AgI imply lattice mismatches of 4.2 to 7.9%, in a survey of eight common, approximate (non-hybrid) functionals, too large to allow a meaningful contribution from Density Functional Theory to the discussion of the significance of lattice match in ice nucleation. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Feibelman, PJ (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 43 TC 38 Z9 38 U1 0 U2 14 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 32 BP 4688 EP 4691 DI 10.1039/b808482n PG 4 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 335DU UT WOS:000258271800004 PM 18688511 ER PT J AU Brown, MA D'Auria, R Kuo, IFW Krisch, MJ Starr, DE Bluhm, H Tobias, DJ Hemminger, JC AF Brown, Matthew A. D'Auria, Raffaella Kuo, I. -F. William Krisch, Maria J. Starr, David E. Bluhm, Hendrik Tobias, Douglas J. Hemminger, John C. TI Ion spatial distributions at the liquid-vapor interface of aqueous potassium fluoride solutions SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID MOLECULAR-DYNAMICS SIMULATIONS; SALT-SOLUTIONS; PHOTOELECTRON-SPECTROSCOPY; AIR/WATER INTERFACE; WATER-SURFACE; CANONICAL ENSEMBLE; SOLVATION; PHOTOEMISSION; CLUSTERS; DENSITY AB X-Ray photoemission spectroscopy operating under ambient pressure conditions is used to probe ion distributions throughout the interfacial region of a free-flowing aqueous liquid micro-jet of 6 M potassium fluoride. Varying the energy of the ejected photoelectrons by carrying out experiments as a function of X-ray wavelength measures the composition of the aqueous-vapor interfacial region at various depths. The F(-) to K(+) atomic ratio is equal to unity throughout the interfacial region to a depth of 2 nm. The experimental ion profiles are compared with the results of a classical molecular dynamics simulation of a 6 M aqueous KF solution employing polarizable potentials. The experimental results are in qualitative agreement with the simulations when integrated over an exponentially decaying probe depth characteristic of an APPES experiment. First principles molecular dynamics simulations have been used to calculate the potential of mean force for moving a fluoride anion across the air-water interface. The results show that the fluoride anion is repelled from the interface, consistent with the depletion of F(-) at the interface revealed by the APPES experiment and polarizable force field-based molecular dynamics simulation. Together, the APPES and MD simulation data provide a detailed description of the aqueous-vapor interface of alkali fluoride systems. This work offers the first direct observation of the ion distribution at an aqueous potassium fluoride solution interface. The current experimental results are compared to those previously obtained for saturated solutions of KBr and KI to underscore the strong difference in surface propensity between soft/large and hard/small halide ions in aqueous solution. C1 [Brown, Matthew A.; D'Auria, Raffaella; Krisch, Maria J.; Tobias, Douglas J.; Hemminger, John C.] Univ Calif Irvine, Dept Chem & Air UCI, Irvine, CA 92697 USA. [Kuo, I. -F. William] Lawrence Livermore Natl Lab, Div Chem Sci, Livermore, CA 94551 USA. [Starr, David E.; Bluhm, Hendrik] Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Tobias, DJ (reprint author), Univ Calif Irvine, Dept Chem & Air UCI, Irvine, CA 92697 USA. EM dtobias@uci.edu; jchemmin@uci.edu RI Brown, Matthew/D-9236-2012; Tobias, Douglas/B-6799-2015 NR 48 TC 74 Z9 74 U1 2 U2 51 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 32 BP 4778 EP 4784 DI 10.1039/b807041e PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 335DU UT WOS:000258271800013 PM 18688520 ER PT J AU Xu, M Larentzos, JP Roshdy, M Criscenti, LJ Allen, HC AF Xu, Man Larentzos, James P. Roshdy, Mazen Criscenti, Louise J. Allen, Heather C. TI Aqueous divalent metal-nitrate interactions: hydration versus ion pairing SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID CONSTRAINED MOLECULAR-DYNAMICS; CALCIUM NITRATE; RAMAN-SPECTRA; MAGNESIUM-NITRATE; ELECTROLYTE-SOLUTIONS; SOLVENT INTERACTION; SODIUM-NITRATE; GLASSY STATES; MEAN FORCE; 30 MPA AB Nitrate aqueous solutions, Mg(NO(3))(2), Ca(NO(3))(2), Sr(NO(3))(2), and Pb(NO(3))(2), are investigated using Raman spectroscopy and free energy profiles from molecular dynamics (MD) simulations. Analysis of the in-plane deformation, symmetric stretch, and asymmetric stretch vibrational modes of the nitrate ions reveal perturbation caused by the metal cations and hydrating water molecules. Results show that Pb(2+) has a strong tendency to form contact ion pairs with nitrate relative to Sr(2+), Ca(2+), and Mg(2+), and contact ion pair formation decreases with decreasing cation size and increasing cation charge density: Pb(2+) > Sr(2+) > Ca(2+) > Mg(2+). In the case of Mg(2+), the Mg(2+) -OH(2) intermolecular modes indicate strong hydration by water molecules and no contact ion pairing with nitrate. Free energy profiles provide evidence for the experimentally observed trend and clarification between solvent-separated, solvent-shared, and contact ion pairs, particularly for Mg(2+) relative to other cations. C1 [Larentzos, James P.; Criscenti, Louise J.] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Xu, Man; Roshdy, Mazen; Allen, Heather C.] Ohio State Univ, Dept Chem, Columbus, OH 43210 USA. RP Criscenti, LJ (reprint author), Sandia Natl Labs, POB 5800,MS 0754, Albuquerque, NM 87185 USA. EM ljcrisc@sandia.gov; allen@chemistry.ohio-state.edu RI Xu, Man/B-7660-2013 NR 52 TC 32 Z9 33 U1 3 U2 41 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 32 BP 4793 EP 4801 DI 10.1039/b807090n PG 9 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 335DU UT WOS:000258271800015 PM 18688522 ER PT J AU Malardier-Jugroot, C Johnson, ME Murarka, RK Head-Gordon, T AF Malardier-Jugroot, Cecile Johnson, Margaret E. Murarka, Rajesh K. Head-Gordon, Teresa TI Aqueous peptides as experimental models for hydration water dynamics near protein surfaces SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID INELASTIC NEUTRON-SCATTERING; SINGLE-PARTICLE DYNAMICS; SUPERCOOLED WATER; RELAXATIONAL DYNAMICS; DIELECTRIC-RELAXATION; MOLECULAR-DYNAMICS; DIFFUSIVE MOTIONS; BIOLOGICAL WATER; SOLVATION; MYOGLOBIN AB We report quasi-elastic neutron scattering experiments to contrast the water dynamics as a function of temperature for hydrophilic and amphiphilic peptides under the same level of confinement, as models for understanding hydration dynamics near chemically heterogeneous protein surfaces. We find that the hydrophilic peptide shows only a single non-Arrhenius translational process with no evidence of spatial heterogeneity unlike the amphiphilic peptide solution that exhibits two translational relaxations with an Arrhenius and non-Arrhenius dependence on temperature. Together these results provide experimental proof that heterogeneous dynamical signatures near protein surfaces arise in part from chemical heterogeneity (energy disorder) as opposed to mere topological roughness of the protein surface. C1 [Johnson, Margaret E.; Murarka, Rajesh K.; Head-Gordon, Teresa] Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA. [Malardier-Jugroot, Cecile] Royal Mil Coll Canada, Dept Chem & Chem Engn, Kingston, ON K7K 7B4, Canada. [Johnson, Margaret E.] UCB Joint Grad Grp Bioengn, UCSF, Berkeley, CA 94720 USA. [Head-Gordon, Teresa] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA. [Murarka, Rajesh K.] Cornell Univ, Baker Lab Chem & Chem Biol, Ithaca, NY 14853 USA. RP Head-Gordon, T (reprint author), Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA. RI Head-Gordon, Teresa/E-5818-2011; Johnson, Margaret/M-4708-2016 OI Johnson, Margaret/0000-0001-9881-291X NR 43 TC 30 Z9 30 U1 1 U2 8 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 EI 1463-9084 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 32 BP 4903 EP 4908 DI 10.1039/b806995f PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 335DU UT WOS:000258271800027 PM 18688534 ER PT J AU Maiti, A Pagoria, PF Gash, AE Han, TY Orme, CA Gee, RH Fried, LE AF Maiti, A. Pagoria, P. F. Gash, A. E. Han, T. Y. Orme, C. A. Gee, R. H. Fried, L. E. TI Solvent screening for a hard-to-dissolve molecular crystal SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID TEMPERATURE IONIC LIQUIDS; BASIS-SETS; 1,3,5-TRIAMINO-2,4,6-TRINITROBENZENE; ENERGY; COSMO; APPROXIMATION; SOLUBILITY; CATALYSIS; FLUORIDE; ATOMS AB Materials with a high-degree of inter- and intra-molecular hydrogen bonding generally have limited solubility in conventional organic solvents. This presents a problem for the dissolution, manipulation and purification of these materials. Using a state-of-the-art density-functional-theory based quantum chemical solvation model we systematically evaluated solvents for a known hydrogen-bonded molecular crystal. This, coupled with direct solubility measurements, uncovered a class of ionic liquids involving fluoride anions that possess more than two orders of magnitude higher solvation power as compared with the best conventional solvents. The crystal structure of one such ionic liquid, determined by X-ray diffraction spectroscopy, indicates that F(-) ions are stabilized through H-bonded chains with water. The presence of coordinating water in such ionic liquids seems to facilitate the dissolution process by keeping the chemical activity of the F(-) ions in check. C1 [Maiti, A.; Pagoria, P. F.; Gash, A. E.; Han, T. Y.; Orme, C. A.; Gee, R. H.; Fried, L. E.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Maiti, A (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. EM amaiti@llnl.gov RI Orme, Christine/A-4109-2009; Fried, Laurence/L-8714-2014 OI Fried, Laurence/0000-0002-9437-7700 FU UC LLNL [W-7405-Eng-48]; Laboratory Directed Research and Development Program at LLNL [06-SI-005] FX We would like to thank Sarah Chinn and Damon Parrish for help with NMR and XRD measurements. We would also like to acknowledge useful discussions with Alex Mitchell. The work was performed under the auspices of the US Department of Energy by the UC LLNL under Contract W-7405-Eng-48 and supported by project 06-SI-005 funded by the Laboratory Directed Research and Development Program at LLNL. NR 35 TC 20 Z9 22 U1 0 U2 2 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 33 BP 5050 EP 5056 DI 10.1039/b805169k PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 337DE UT WOS:000258414900004 PM 18701952 ER PT J AU Wong, BM AF Wong, Bryan M. TI Nuclear quadrupole hyperfine structure in HC(14)N/H(14)NC and DC (15)N/D(15) NC isomerization: a diagnostic tool for characterizing vibrational localization SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID FOURIER-TRANSFORM SPECTRA; LARGE-AMPLITUDE MOTIONS; OVERTONE BANDS; POLYATOMIC-MOLECULES; QUANTUM CALCULATIONS; BENDING DYNAMICS; ENERGY-TRANSFER; DIPOLE-MOMENTS; EXCITED HCN; ACETYLENE AB Large-amplitude molecular motions which occur during isomerization can cause significant changes in electronic structure. These variations in electronic properties can be used to identify vibrationally-excited eigenstates which are localized along the potential energy surface. This work demonstrates that nuclear quadrupole hyperfine interactions can be used as a diagnostic marker of progress along the isomerization path in both the HC(14)N/H(14)NC and DC (15)N/D(15) NC chemical systems. Ab initio calculations at the CCSD(T)/cc-pCVQZ level indicate that the hyperfine interaction is extremely sensitive to the chemical bonding of the quadrupolar (14)N nucleus and can therefore be used to determine in which potential well the vibrational wavefunction is localized. A natural bonding orbital analysis along the isomerization path further demonstrates that hyperfine interactions arise from the asphericity of the electron density at the quadrupolar nucleus. Using the CCSD( T) potential surface, the quadrupole coupling constants of highly-excited vibrational states are computed from a one-dimensional internal coordinate path Hamiltonian. The excellent agreement between ab initio calculations and recent measurements demonstrates that nuclear quadrupole hyperfine structure can be used as a diagnostic tool for characterizing localized HCN and HNC vibrational states. C1 Sandia Natl Labs, Dept Chem Mat, Livermore, CA 94551 USA. RP Wong, BM (reprint author), Sandia Natl Labs, Dept Chem Mat, Livermore, CA 94551 USA. EM bmwong@sandia.gov RI Wong, Bryan/B-1663-2009 OI Wong, Bryan/0000-0002-3477-8043 FU the National Center for Supercomputing Applications [TG-CHE070084N]; the NCSA Cobalt SGI Altix System FX The author is grateful for helpful discussions with Prof. Robert W. Field, Dr Hans A. Bechtel, and Adam H. Steeves. This work was partially supported by the National Center for Supercomputing Applications under grant number TG-CHE070084N and utilized the NCSA Cobalt SGI Altix System. 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 40 TC 6 Z9 6 U1 0 U2 5 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 36 BP 5599 EP 5606 DI 10.1039/b807672c PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 350VE UT WOS:000259380900014 PM 18956095 ER PT J AU Xu, Y Getman, RB Shelton, WA Schneider, WF AF Xu, Ye Getman, Rachel B. Shelton, William A. Schneider, William F. TI A first-principles investigation of the effect of Pt cluster size on CO and NO oxidation intermediates and energetics SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID DENSITY-FUNCTIONAL THEORY; TOTAL-ENERGY CALCULATIONS; WAVE BASIS-SET; PLATINUM CLUSTERS; CATALYTIC-OXIDATION; CARBON-MONOXIDE; METAL-CLUSTERS; GOLD CLUSTERS; DISSOCIATIVE ADSORPTION; STRUCTURAL EVOLUTION AB As catalysis research strives toward designing structurally and functionally well-defined catalytic centers containing as few active metal atoms as possible, the importance of understanding the reactivity of small metal clusters, and in particular of systematic comparisons of reaction types and cluster sizes, has grown concomitantly. Here we report density functional theory calculations (GGA-PW91) that probe the relationship between particle size, intermediate structures, and energetics of CO and NO oxidation by molecular and atomic oxygen on Pt(x) clusters (x = 1-5 and 10). The preferred structures, charge distributions, vibrational spectra, and energetics are systematically examined for oxygen (O(2), 2O, and O), CO, CO(2), NO, and NO(2), for CO/NO co-adsorbed with O(2), 2O, and O, and for CO(2)/NO(2) co-adsorbed with O. The binding energies of oxygen, CO, NO, and of the oxidation products CO(2) and NO(2) are all markedly enhanced on Ptx compared to Pt(111), and they trend toward the Pt(111) levels as cluster size increases. Because of the strong interaction of both the reactants and products with the Ptx clusters, deep energy sinks develop on the potential energy surfaces of the respective oxidation processes, indicating worse reaction energetics than on Pt(111). Thus the smallest Pt clusters are less effective for catalyzing CO and NO oxidation in their original state than bulk Pt. Our results further suggests that oxidation by molecular O(2) is thermodynamically more favourable than by atomic O on Ptx. Conditions and applications in which the Ptx clusters may be effective catalysts are discussed. C1 [Getman, Rachel B.; Schneider, William F.] Univ Notre Dame, Dept Chem & Biomol Engn, Notre Dame, IN 46556 USA. [Xu, Ye] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA. [Xu, Ye] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. [Shelton, William A.] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA. [Schneider, William F.] Univ Notre Dame, Dept Chem & Biochem, Notre Dame, IN 46556 USA. RP Schneider, WF (reprint author), Univ Notre Dame, Dept Chem & Biomol Engn, Notre Dame, IN 46556 USA. EM wschneider@nd.edu RI Xu, Ye/B-5447-2009 OI Xu, Ye/0000-0002-6406-7832 FU Computer Science and Mathematics Division; Oak Ridge National Laboratory (ORNL); Center for Nanophase Materials Sciences; ORNL; US-DOE Division of Scientific User Facilities; University of Notre Dame; US-DOE Office of Basic Energy Sciences [DE-FG02-06ER15830-001] FX This research was done, in part, at the Computer Science and Mathematics Division, Oak Ridge National Laboratory (ORNL) at the Center for Nanophase Materials Sciences, ORNL, sponsored by US-DOE Division of Scientific User Facilities; and at the University of Notre Dame, supported by US-DOE Office of Basic Energy Sciences, under the grant DE-FG02-06ER15830-001. Computing resources provided by the National Center for Computational Sciences at ORNL, by the Center for Research Computing at the University of Notre Dame, and by NERSC were used. NR 74 TC 28 Z9 28 U1 1 U2 33 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 39 BP 6009 EP 6018 DI 10.1039/b805179h PG 10 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 354ZJ UT WOS:000259678100010 PM 18825289 ER PT J AU Giri, BR Kiefer, JH Xu, H Klippenstein, SJ Tranter, RS AF Giri, Binod R. Kiefer, John H. Xu, Hui Klippenstein, Stephen J. Tranter, Robert S. TI An experimental and theoretical high temperature kinetic study of the thermal unimolecular dissociation of fluoroethane SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID CORRELATED MOLECULAR CALCULATIONS; GAUSSIAN-BASIS SETS; SHOCK-TUBE; ETHYL FLUORIDE; AB-INITIO; TRANSITION-STATE; LASER-SCHLIEREN; WAVE-FUNCTIONS; RELAXATION; DECOMPOSITION AB The thermal dissociation of fluoroethane has been studied using shock tube (ST)/time-of-flight mass spectrometry (TOF-MS) at 500 and 1200 Torr over the temperature range 1200-1550 K. The ST/TOF-MS experiments confirm that elimination of HF is the only reaction channel and rate coefficients for this reaction were extracted from concentration/time profiles derived from the mass spectra. Results from a novel diaphragmless shock tube coupled to the TOF-MS are also presented and demonstrate the unique ability of this apparatus to generate sufficiently reproducible shock waves that signal averaging can be performed over multiple experiments; something that is not possible with a conventional shock tube. The dissociation is also studied with ab initio transition state theory based master equation simulations. A modest increase in the calculated barrier height (i.e., by 1 kcal mol(-1)) yields predicted high pressure rate coefficients that are in good agreement with the existing literature data. The present pressure dependent observations are accurately reproduced for a downwards energy transfer for neon at 1200 to 1500 K of similar to 270 cm(-1), which is somewhat smaller than that found in previous studies on fluorinated ethanes with the same bath gases. C1 [Giri, Binod R.; Klippenstein, Stephen J.; Tranter, Robert S.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA. [Kiefer, John H.; Xu, Hui] Univ Illinois, Dept Chem Engn, Chicago, IL 60607 USA. RP Tranter, RS (reprint author), Argonne Natl Lab, Chem Sci & Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA. EM tranter@anl.gov RI Xu, Hui/F-8234-2012; OI Klippenstein, Stephen/0000-0001-6297-9187 FU Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences, US Department of Energy [DE-AC02-06CH11357, DE-FE85ER13384] FX This work was supported by the Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences, US Department of Energy, under contract DE-AC02-06CH11357 (Argonne) and DE-FE85ER13384 (UIC). NR 51 TC 6 Z9 6 U1 1 U2 12 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 EI 1463-9084 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 41 BP 6266 EP 6273 DI 10.1039/b808168a PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 362LD UT WOS:000260198300009 PM 18936851 ER PT J AU Chai, JD Head-Gordon, M AF Chai, Jeng-Da Head-Gordon, Martin TI Long-range corrected hybrid density functionals with damped atom-atom dispersion corrections SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID DER-WAALS INTERACTIONS; TRANSFER EXCITED-STATES; SELF-INTERACTION ERROR; RARE-GAS DIMERS; NONCOVALENT INTERACTIONS; THERMOCHEMICAL KINETICS; BENCHMARK DATABASE; DFT-D; COMPLEXES; ENERGIES AB We report re-optimization of a recently proposed long-range corrected (LC) hybrid density functional [J.-D. Chai and M. Head-Gordon, J. Chem. Phys., 2008, 128, 084106] to include empirical atom-atom dispersion corrections. The resulting functional, omega B97X-D yields satisfactory accuracy for thermochemistry, kinetics, and non-covalent interactions. Tests show that for non-covalent systems, omega B97X-D shows slight improvement over other empirical dispersion-corrected density functionals, while for covalent systems and kinetics it performs noticeably better. Relative to our previous functionals, such as omega B97X, the new functional is significantly superior for non-bonded interactions, and very similar in performance for bonded interactions. C1 [Head-Gordon, Martin] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Head-Gordon, M (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. EM mhg@cchem.berkeley.edu RI Chai, Jeng-Da/C-3897-2009 OI Chai, Jeng-Da/0000-0002-3994-2279 FU US Department of Energy FX This work was supported by the US Department of Energy through the Chemistry Endstation project of the Petascale computing program. M. H. G. is a part-owner of Q-Chem Inc. NR 99 TC 2662 Z9 2666 U1 51 U2 398 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 EI 1463-9084 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 44 BP 6615 EP 6620 DI 10.1039/b810189b PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 370PT UT WOS:000260775400004 PM 18989472 ER PT J AU La Macchia, G Infante, I Raab, J Gibson, JK Gagliardi, L AF La Macchia, Giovanni Infante, Ivan Raab, Juraj Gibson, John K. Gagliardi, Laura TI A theoretical study of the ground state and lowest excited states of PuO0/+/+2 and PuO20/+/+2 SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS LA English DT Article ID RELATIVISTIC QUANTUM-CHEMISTRY; ANO BASIS-SETS; 2ND-ORDER PERTURBATION; IONIZATION-POTENTIALS; CHEMICAL METHODS; UO2 MOLECULE; OXIDE VAPORS; GAS-PHASE; URANIUM; URANYL AB The ground and excited states of neutral and cationic PuO and PuO2 have been studied with multiconfigurational quantum chemical methods followed by second order perturbation theory, the CASSCF/CASPT2 method. Scalar relativistic effects and spin-orbit coupling have been included in the treatment. As literature values for the ionization energy of PuO2 are in the wide range of similar to 6.6 eV to similar to 10.1 eV, a central goal of the computations was to resolve these discrepancies; the theoretical results indicate that the ionization energy is near the lower end of this range. The calculated ionization energies for PuO, PuO+ and PuO2+ are in good agreement with the experimental values. C1 [Gibson, John K.] Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. [La Macchia, Giovanni; Infante, Ivan; Raab, Juraj; Gagliardi, Laura] Univ Geneva, Dept Phys Chem, CH-1211 Geneva, Switzerland. RP Gibson, JK (reprint author), Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. EM JKGibson@lbl.gov; laura.gagliardi@unige.ch RI Infante, Ivan/A-1912-2011 OI Infante, Ivan/0000-0003-3467-9376 FU Swiss National Science Foundation [200020-120007]; Director, Office of Science, Office of Basic Energy Sciences, of the U. S. Department of Energy [DE-AC02-05CH11231] FX This work was supported by the Swiss National Science Foundation (grant no. 200020-120007); and by the Director, Office of Science, Office of Basic Energy Sciences, of the U. S. Department of Energy under Contract No. DE-AC02-05CH11231. NR 36 TC 25 Z9 25 U1 0 U2 9 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9076 J9 PHYS CHEM CHEM PHYS JI Phys. Chem. Chem. Phys. PY 2008 VL 10 IS 48 BP 7278 EP 7283 DI 10.1039/b810744k PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 384JV UT WOS:000261742000011 PM 19060973 ER PT J AU Boixo, S Datta, A Flammia, ST Shaji, A Bagan, E Caves, CM AF Boixo, Sergio Datta, Animesh Flammia, Steven T. Shaji, Anil Bagan, Emilio Caves, Carlton M. TI Quantum-limited metrology with product states SO PHYSICAL REVIEW A LA English DT Article AB We study the performance of initial product states of n-body systems in generalized quantum metrology protocols that involve estimating an unknown coupling constant in a nonlinear k-body (k < n) Hamiltonian. We obtain the theoretical lower bound on the uncertainty in the estimate of the parameter. For arbitrary initial states, the lower bound scales as 1/n(k), and for initial product states, it scales as 1/n(k-1/2). We show that the latter scaling can be achieved using simple, separable measurements. We analyze in detail the case of a quadratic Hamiltonian (k=2), implementable with Bose-Einstein condensates. We formulate a simple model, based on the evolution of angular-momentum coherent states, which explains the O(n(-3/2)) scaling for k=2; the model shows that the entanglement generated by the quadratic Hamiltonian does not play a role in the enhanced sensitivity scaling. We show that phase decoherence does not affect the O(n(-3/2)) sensitivity scaling for initial product states. C1 [Boixo, Sergio; Datta, Animesh; Flammia, Steven T.; Shaji, Anil; Bagan, Emilio; Caves, Carlton M.] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA. [Boixo, Sergio] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Flammia, Steven T.] Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5, Canada. [Bagan, Emilio] Univ Autonoma Barcelona, Fis Teor Grp, E-08193 Barcelona, Spain. [Caves, Carlton M.] Univ Queensland, Dept Phys, Brisbane, Qld 4072, Australia. RP Boixo, S (reprint author), Univ New Mexico, Dept Phys & Astron, MSC07-4220, Albuquerque, NM 87131 USA. EM sflammia@perimeterinstitute.ca RI Datta, Animesh/E-8139-2011; Shaji, Anil/A-3443-2012; Caves, Carlton/K-8167-2014; Flammia, Steven/C-8637-2009 OI Datta, Animesh/0000-0003-4021-4655; Caves, Carlton/0000-0001-8876-1186; Flammia, Steven/0000-0002-3975-0226 NR 30 TC 49 Z9 51 U1 0 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD JAN PY 2008 VL 77 IS 1 AR 012317 DI 10.1103/PhysRevA.77.012317 PG 15 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 258IQ UT WOS:000252862000049 ER PT J AU Buth, C Santra, R AF Buth, Christian Santra, Robin TI Theory of x-ray absorption by laser-aligned symmetric-top molecules SO PHYSICAL REVIEW A LA English DT Article ID ALIGNMENT; POLARIZABILITIES; SPECTROSCOPY; PULSES; FIELDS AB We devise a theory of x-ray absorption by symmetric-top molecules which are aligned by an intense optical laser. Initially, the density matrix of the system is composed of the electronic ground state of the molecules and a thermal ensemble of rigid-rotor eigenstates. We formulate equations of motion of the two-color (laser plus x rays) rotational-electronic problem. The interaction with the laser is assumed to be nonresonant; it is described by an electric dipole polarizability tensor. X-ray absorption is approximated as a one-photon process. It is shown that the equations can be separated such that the interaction with the laser can be treated independently of the x rays. The laser-only density matrix is propagated numerically. After each time step, the x-ray absorption is calculated. We apply our theory to study adiabatic alignment of bromine molecules (Br(2)). The required dynamic polarizabilities are determined using the ab initio linear response methods coupled-cluster singles (CCS), second-order approximate coupled-cluster singles and doubles (CC2), and coupled-cluster singles and doubles (CCSD). For the description of x-ray absorption on the sigma(g)1s ->sigma(u)4p resonance, a parameter-free two-level model is used for the electronic structure of the molecules. Our theory opens up novel perspectives for the quantum control of x-ray radiation. C1 [Buth, Christian; Santra, Robin] Argonne Natl Lab, Argonne, IL 60439 USA. RP Buth, C (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Santra, Robin/E-8332-2014; Buth, Christian/A-2834-2017 OI Santra, Robin/0000-0002-1442-9815; Buth, Christian/0000-0002-5866-3443 NR 49 TC 13 Z9 13 U1 1 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD JAN PY 2008 VL 77 IS 1 AR 013413 DI 10.1103/PhysRevA.77.013413 PG 13 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 258IQ UT WOS:000252862000129 ER PT J AU Houfek, K Rescigno, TN McCurdy, CW AF Houfek, Karel Rescigno, T. N. McCurdy, C. W. TI Probing the nonlocal approximation to resonant collisions of electrons with diatomic molecules SO PHYSICAL REVIEW A LA English DT Article ID PROJECTION-OPERATOR CALCULATIONS; NUCLEAR REACTIONS; SHAPE RESONANCES; UNIFIED THEORY; SCATTERING; STATES; MODEL AB A numerically solvable two-dimensional model introduced by the authors [Phys. Rev. A 73, 032721 (2006)] is used to investigate the validity of the nonlocal approximation to the dynamics of resonant collisions of electrons with diatomic molecules. The nonlocal approximation to this model is derived in detail, all underlying assumptions are specified, and explicit expressions for the resonant and nonresonant (background) T matrix for the studied processes are given. Different choices of the so-called discrete state, which fully determines the nonlocal approximation, are discussed, and it is shown that a physical choice of this state can in general give poorer results than other choices that minimize the nonadiabatic effects and/or the background terms of the T matrix. Background contributions to the T matrix, which are usually not considered in the resonant theory of electron-molecule collisions, can contribute significantly not only to elastic but also to vibrational excitation cross sections. Dissociative attachment cross sections, however, are found to be properly described in the nonlocal model with any choice of discrete state that minimizes the importance of nonadiabatic effects and goes to the proper limit at large internuclear separation. C1 [Houfek, Karel] Charles Univ Prague, Fac Math & Phys, Inst Theoret Phys, Prague 18000 8, Czech Republic. [Rescigno, T. N.; McCurdy, C. W.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [McCurdy, C. W.] Univ Calif Davis, Dept Appl Sci, Davis, CA 95616 USA. [McCurdy, C. W.] Univ Calif Davis, Dept Chem, Davis, CA 95616 USA. RP Houfek, K (reprint author), Charles Univ Prague, Fac Math & Phys, Inst Theoret Phys, Holesovickach 2, Prague 18000 8, Czech Republic. EM houfek@mbox.troja.mff.cuni.cz; tnrescigno@lbl.gov; cwmccurdy@lbl.gov NR 20 TC 14 Z9 14 U1 2 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD JAN PY 2008 VL 77 IS 1 AR 012710 DI 10.1103/PhysRevA.77.012710 PG 14 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 258IQ UT WOS:000252862000098 ER PT J AU Pindzola, MS Schultz, DR AF Pindzola, M. S. Schultz, D. R. TI Time-dependent lattice methods for ion-atom collisions in Cartesian and cylindrical coordinate systems SO PHYSICAL REVIEW A LA English DT Article ID PROTON-HYDROGEN COLLISIONS; CHARGE-TRANSFER; SCHRODINGER-EQUATION; IONIZATION; EXCITATION; HELIUM AB Time-dependent lattice methods in both Cartesian and cylindrical coordinates are applied to calculate excitation cross sections for p+H collisions at 40 keV incident energy. The time-dependent Schrodinger equation is solved using a previously formulated Cartesian coordinate single-channel method on a full 3D lattice and a newly formulated cylindrical coordinate multichannel method on a set of coupled 2D lattices. Cartesian coordinate single-channel and cylindrical coordinate five-channel calculations are found to be in reasonable agreement for excitation cross sections from the 1s ground state to the 2s, 2p, 3s, 3p, and 3d excited states. For extension of the time-dependent lattice method to handle the two electron dynamics found in p+He collisions, the cylindrical coordinate multichannel method appears promising due to the reduced dimensionality of its lattice. C1 [Pindzola, M. S.] Auburn Univ, Dept Phys, Auburn, AL 36849 USA. [Schultz, D. R.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RP Pindzola, MS (reprint author), Auburn Univ, Dept Phys, Auburn, AL 36849 USA. NR 17 TC 7 Z9 7 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD JAN PY 2008 VL 77 IS 1 AR 014701 DI 10.1103/PhysRevA.77.014701 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 258IQ UT WOS:000252862000202 ER PT J AU Simula, TP Nygaard, N Hu, SX Collins, LA Schneider, BI Molmer, K AF Simula, T. P. Nygaard, N. Hu, S. X. Collins, L. A. Schneider, B. I. Molmer, K. TI Angular momentum exchange between coherent light and matter fields SO PHYSICAL REVIEW A LA English DT Article AB Full, three-dimensional time-dependent simulations are presented demonstrating the quantized transfer of angular momentum to a Bose-Einstein condensate from a laser carrying orbital angular momentum in a Laguerre-Gaussian mode. The process is described in terms of coherent Bragg scattering of atoms from a chiral optical lattice. The transfer efficiency and the angular momentum content of the output coupled vortex state are analyzed and compared with a recent experiment. C1 [Simula, T. P.; Nygaard, N.; Molmer, K.] Aarhus Univ, Dept Phys & Astron, Lundbeck Fdn Theoret Ctr Quantum Syst Res, DK-8000 Aarhus, Denmark. [Hu, S. X.; Collins, L. A.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. [Schneider, B. I.] Natl Sci Fdn, Div Phys, Arlington, VA 22230 USA. [Schneider, B. I.] NIST, Div Electron & Opt Phys, Gaithersburg, MD 20899 USA. RP Simula, TP (reprint author), Aarhus Univ, Dept Phys & Astron, Lundbeck Fdn Theoret Ctr Quantum Syst Res, DK-8000 Aarhus, Denmark. RI Hu, Suxing/A-1265-2007; Nygaard, Nicolai/B-4664-2009; Simula, Tapio/I-1460-2012 OI Hu, Suxing/0000-0003-2465-3818; Simula, Tapio/0000-0003-0730-9126 NR 12 TC 29 Z9 29 U1 0 U2 4 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD JAN PY 2008 VL 77 IS 1 AR 015401 DI 10.1103/PhysRevA.77.015401 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 258IQ UT WOS:000252862000204 ER PT J AU Tao, JM Staroverov, VN Scuseria, GE Perdew, JP AF Tao, Jianmin Staroverov, Viktor N. Scuseria, Gustavo E. Perdew, John P. TI Exact-exchange energy density in the gauge of a semilocal density-functional approximation SO PHYSICAL REVIEW A LA English DT Article ID GENERALIZED GRADIENT APPROXIMATION; MOLECULES; ACCURATE; ATOMS; HOLE; MATRICES; VIRIAL AB The exact-exchange energy density and energy density of a semilocal density-functional approximation are two key ingredients for modeling the static correlation, a strongly nonlocal functional of the electron density, through a local hybrid functional. Because energy densities are not uniquely defined, the conventional (Slater) exact-exchange energy density e(x)(ex(conv)) is not necessarily well suited for local mixing with a given semilocal approximation. We show how to transform e(x)(ex(conv)) in order to make it compatible with an arbitrary semilocal density functional, taking the nonempirical meta-generalized-gradient approximation of Tao, Perdew, Staroverov, and Scuseria as an example. Our additive gauge transformation function integrates to zero, satisfies exact constraints, and is most important where the density is dominated by a single orbital shape. We show that, as expected, the difference between semilocal and exact-exchange energy densities becomes more negative under bond stretching in He-2(+) and related systems. Our construction of e(x)(ex(conv)) by a resolution-of-the-identity method requires uncontracted basis functions. C1 [Tao, Jianmin] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. [Tao, Jianmin] Los Alamos Natl Lab, CNLS, Los Alamos, NM 87545 USA. [Staroverov, Viktor N.] Univ Western Ontario, Dept Chem, London, ON N6A 5B7, Canada. [Scuseria, Gustavo E.] Rice Univ, Dept Chem, Houston, TX 77005 USA. [Perdew, John P.] Tulane Univ, Dept Phys, New Orleans, LA 70118 USA. [Perdew, John P.] Tulane Univ, Quantum Theory Grp, New Orleans, LA 70118 USA. RP Tao, JM (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RI Scuseria, Gustavo/F-6508-2011 NR 62 TC 52 Z9 52 U1 1 U2 9 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 EI 1094-1622 J9 PHYS REV A JI Phys. Rev. A PD JAN PY 2008 VL 77 IS 1 AR 012509 DI 10.1103/PhysRevA.77.012509 PG 9 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 258IQ UT WOS:000252862000080 ER PT J AU Yoshida, S Reinhold, CO Burgdorfer, J Mestayer, JJ Lancaster, JC Dunning, FB AF Yoshida, S. Reinhold, C. O. Burgdoerfer, J. Mestayer, J. J. Lancaster, J. C. Dunning, F. B. TI Transferring Rydberg wave packets between islands across the chaotic sea SO PHYSICAL REVIEW A LA English DT Article ID QUANTUM-SYSTEMS; ATOM AB A protocol to take a Rydberg wave packet that is trapped in a period-1 island, i.e., that is synchronized with the period of the driving field, and transfer it to a period-2 island such that the wave packet evolves with twice the period is theoretically analyzed and experimentally demonstrated. Such period-doubling transitions are realized using two superposed trains of half-cycle pulses whose relative time delay is varied adiabatically. It is shown that this protocol provides a tool to manipulate the angle variable of a Rydberg wave packet while its conjugate principal action is maintained constant. C1 [Yoshida, S.; Burgdoerfer, J.] Vienna Univ Technol, Inst Theoret Phys, Vienna, Austria. [Reinhold, C. O.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. [Reinhold, C. O.; Burgdoerfer, J.] Univ Tennessee, Dept Phys, Knoxville, TN 37996 USA. [Mestayer, J. J.; Lancaster, J. C.; Dunning, F. B.] Rice Univ, Dept Phys & Astron, Houston, TX 77005 USA. [Mestayer, J. J.; Lancaster, J. C.; Dunning, F. B.] Rice Univ, Rice Quantum Inst, Houston, TX 77005 USA. RP Yoshida, S (reprint author), Vienna Univ Technol, Inst Theoret Phys, Vienna, Austria. OI Reinhold, Carlos/0000-0003-0100-4962 NR 25 TC 4 Z9 4 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD JAN PY 2008 VL 77 IS 1 AR 013411 DI 10.1103/PhysRevA.77.013411 PG 9 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA 258IQ UT WOS:000252862000127 ER PT J AU Chen, SY Gong, XG Wei, SH AF Chen, Shiyou Gong, X. G. Wei, Su-Huai TI Crystal structures and mechanical properties of superhard BC(2)N and BC(4)N alloys: First-principles calculations SO PHYSICAL REVIEW B LA English DT Article ID ELASTIC-CONSTANTS; MIXED-CRYSTALS; BORON-NITRIDE; CUBIC BC2N; DIAMOND; PSEUDOPOTENTIALS; STRENGTH; EQUATION; SCIENCE; SEARCH AB Using first-principles calculation, we have investigated the structural and mechanical properties of the cubic (c)-BN/C(2) alloy systems, which are currently considered as strong candidates for superhard materials. We show that there is a sublinear dependence of the physical properties of the c-BC(2)N alloy on the number of C-C and B-N bonds in the system. Structures that maximize the number of C-C and B-N bonds have low energy, high density, and high bulk and shear moduli. Structures with unstable B-B and N-N bonds are expected to have higher energy, lower density, and elastic moduli. Based on the "bond counting rule," we have identified a series of low-energy (C(2))(n)/(BN)(m) (111) superlattices whose structural parameters are similar to the recently synthesized high-density BC(2)N and BC(4)N samples [Y. Zhao , J. Mater. Res. 17, 3139 (2002)]. The calculated bulk and shear moduli and ideal shear strengths under normal compression show that these BC(2)N and BC(4)N (111) superlattices are very strong in resistance to elastic distortion at equilibrium and plastic distortion under nanoindentation. Furthermore, we show that the calculated shear modulus and ideal shear strength under normal compression also have a sublinear relationship with the measured Vickers hardness for these high-density BN/C(2) alloy systems and could thus be used as a good indicator for the hardness of these alloys. C1 [Chen, Shiyou; Gong, X. G.] Fudan Univ, Surface Sci Lab Natl Key, Shanghai 200433, Peoples R China. [Chen, Shiyou; Gong, X. G.] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China. [Wei, Su-Huai] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Chen, SY (reprint author), Fudan Univ, Surface Sci Lab Natl Key, Shanghai 200433, Peoples R China. RI gong, xingao /B-1337-2010; gong, xingao/D-6532-2011 NR 52 TC 27 Z9 28 U1 1 U2 25 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 1 AR 014113 DI 10.1103/PhysRevB.77.014113 PG 9 WC Physics, Condensed Matter SC Physics GA 258IS UT WOS:000252862200029 ER PT J AU Chen, YC Melko, RG Wessel, S Kao, YJ AF Chen, Yu-Chun Melko, Roger G. Wessel, Stefan Kao, Ying-Jer TI Supersolidity from defect condensation in the extended boson Hubbard model SO PHYSICAL REVIEW B LA English DT Article ID EINSTEIN CONDENSATION; PHASE; TRANSITION; SUPERFLUID; CRYSTALS; HELIUM; ATOMS AB We study the ground-state phase diagram of the hard-core extended boson Hubbard model on the square lattice with both nearest- and next-nearest-neighbor hoppings and repulsions, using Gutzwiller mean-field theory and quantum Monte Carlo simulations. We observe the formation of supersolid states with checkerboard, striped, and quarter-filled crystal structures when the system is doped away from commensurate fillings. In the striped supersolid phase, a strong anisotropy in the superfluid density is obtained from the simulations; however, the transverse component remains finite, indicating a true two-dimensional superflow. We find that upon doping, the striped supersolid transitions directly into the supersolid with quarter-filled crystal structure, via a first-order stripe melting transition. C1 [Chen, Yu-Chun; Kao, Ying-Jer] Natl Taiwan Univ, Dept Phys, Taipei 106, Taiwan. [Melko, Roger G.] Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada. [Melko, Roger G.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA. [Wessel, Stefan] Univ Stuttgart, Inst Theoret Phys 3, D-70550 Stuttgart, Germany. [Kao, Ying-Jer] Natl Taiwan Univ, Ctr Theoret Sci, Taipei 106, Taiwan. RP Chen, YC (reprint author), Natl Taiwan Univ, Dept Phys, Taipei 106, Taiwan. EM yjkao@phys.ntu.edu.tw RI Kao, Ying Jer/B-5297-2009 OI Kao, Ying Jer/0000-0002-3329-6018 NR 37 TC 31 Z9 31 U1 0 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 1 AR 014524 DI 10.1103/PhysRevB.77.014524 PG 7 WC Physics, Condensed Matter SC Physics GA 258IS UT WOS:000252862200107 ER PT J AU Cheng, R Bader, SD Fradin, FY AF Cheng, Ruihua Bader, S. D. Fradin, F. Y. TI Strong magnetic surface anisotropy of ultrathin Fe on curved Pt(111) SO PHYSICAL REVIEW B LA English DT Article ID TRANSITION-METALS; VICINAL SURFACES; FILMS; NANOSTRUCTURES; FERROMAGNETISM; FE(110); MOMENTS; W(110); CO AB We investigate the step decoration growth and magnetic properties of Fe grown on a curved Pt(111) single crystal by means of low-energy electron diffraction, scanning tunneling microscopy, and the surface magneto-optical Kerr effect. We find that the step-induced magnetic anisotropy enhances the Curie temperature of Fe ultrathin films. Fe grown on high-vicinal-angle surfaces has larger values of both the saturation magnetization M(s) and coercivity H(c) compared with the flat surface. M(s)(alpha) increases quadratically with the vicinal angle alpha. The atomic steps of the vicinal surface greatly affect the magnetic properties of ultrathin Fe films. Finally we find that the step-induced surface anisotropy K(s)(alpha) is proportional to alpha(4). The surface anisotropy of Fe on curved Pt(111) substrate is related to the numbers of atoms at the step edges and the polarization of proximal Pt atoms. C1 [Cheng, Ruihua] Indiana Univ Purdue Univ, Dept Phys, Indianapolis, IN 46202 USA. [Bader, S. D.; Fradin, F. Y.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Cheng, R (reprint author), Indiana Univ Purdue Univ, Dept Phys, 402 N Blackford St, Indianapolis, IN 46202 USA. RI Bader, Samuel/A-2995-2013 NR 38 TC 8 Z9 8 U1 0 U2 7 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 2 AR 024404 DI 10.1103/PhysRevB.77.024404 PG 6 WC Physics, Condensed Matter SC Physics GA 258IW UT WOS:000252862600047 ER PT J AU Da Silva, JLF Stampfl, C AF Da Silva, Juarez L. F. Stampfl, Catherine TI Trends in adsorption of noble gases He, Ne, Ar, Kr, and Xe on Pd(111) (root 3 x root 3)R30 degrees: All-electron density-functional calculations SO PHYSICAL REVIEW B LA English DT Article ID GENERALIZED-GRADIENT-APPROXIMATION; RARE-GASES; 1ST-PRINCIPLES CALCULATIONS; SURFACE; ENERGY; XENON; ATOMS; GEOMETRY; KRYPTON; PT(111) AB It was recently found from ab initio investigations [J. L. F. Da Silva , Phys. Rev. Lett. 90, 066104 (2003)] that polarization effects and the site dependence of the Pauli repulsion largely dictate the nature of the interaction and the site preference of Xe adatoms on close-packed metal surfaces. It is unclear if the same interaction mechanism occurs for all rare-gas atoms adsorbed on such surfaces. To address this question, we perform all-electron density-functional theory calculations with the local-density approximation (LDA) and generalized gradient approximations (GGA) for [He, Ne, Ar, Kr, and Xe]/Pd(111) in the (root 3 x root 3)R30 degrees structure. Our results confirm that polarization effects of the rare-gas adatoms and Pd atoms in the topmost surface layer, together with the site-dependent Pauli repulsion, largely determine the interaction between rare-gas atoms and the Pd(111) surface. Similar to the earlier ab initio study, the on-top site preference is obtained by the LDA for all rare-gas adatoms, while the GGA functionals yield the on-top site preference for Xe, Kr, and He adatoms, but the fcc site for Ne and Ar. C1 [Da Silva, Juarez L. F.] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany. [Stampfl, Catherine] Univ Sydney, Sch Phys, Sydney, NSW 2006, Australia. RP Da Silva, JLF (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. EM juarez_dasilva@nrel.gov; stampfl@physics.usyd.edu.au RI Da Silva, Juarez L. F./B-5961-2008; Da Silva, Juarez L. F./D-1779-2011 OI Da Silva, Juarez L. F./0000-0003-0645-8760 NR 63 TC 37 Z9 37 U1 0 U2 9 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 4 AR 045401 DI 10.1103/PhysRevB.77.045401 PG 13 WC Physics, Condensed Matter SC Physics GA 258JB UT WOS:000252863100103 ER PT J AU de Sousa, R Moore, JE AF de Sousa, Rogerio Moore, Joel E. TI Optical coupling to spin waves in the cycloidal multiferroic BiFeO(3) SO PHYSICAL REVIEW B LA English DT Article ID FILMS AB The magnon and optical phonon spectrum of an incommensurate multiferroic such as BiFeO(3) is considered in the framework of a phenomenological Landau theory. The resulting spin wave spectrum is quite distinct from commensurate substances due to soft mode anisotropy and magnon zone folding. The former allows electrical control of spin wave propagation via reorientation of the spontaneous ferroelectric moment. The latter gives rise to multiple magnetodielectric resonances due to the coupling of optical phonons at zero wave vector to magnons at integer multiples of the cycloid wave vector. These results show that the optical response of a multiferroic reveals much more about its magnetic excitations than previously anticipated on the basis of simpler models. C1 [de Sousa, Rogerio; Moore, Joel E.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Moore, Joel E.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP de Sousa, R (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. RI de Sousa, Rogerio/C-1078-2008; Moore, Joel/O-4959-2016 OI de Sousa, Rogerio/0000-0003-4258-270X; Moore, Joel/0000-0002-4294-5761 NR 27 TC 51 Z9 51 U1 0 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 1 AR 012406 DI 10.1103/PhysRevB.77.012406 PG 4 WC Physics, Condensed Matter SC Physics GA 258IS UT WOS:000252862200009 ER PT J AU Duan, Y AF Duan, Yuhua TI Electronic properties and stabilities of bulk and low-index surfaces of SnO in comparison with SnO(2): A first-principles density functional approach with an empirical correction of van der Waals interactions SO PHYSICAL REVIEW B LA English DT Article ID GENERALIZED GRADIENT APPROXIMATION; TOTAL-ENERGY CALCULATIONS; AUGMENTED-WAVE METHOD; X-RAY-DIFFRACTION; DISPERSION CORRECTIONS; SNO2(110) SURFACE; METAL-OXIDE; TIN OXIDE; BASIS-SET; PHOTOEMISSION AB The electronic properties and stabilities of SnO and SnO(2) bulk materials and their low-index surfaces are investigated by density functional theory. An empirical method has been adopted in this study to account for the van der Waals interactions among the Sn-O layers in the bulk and low-index surfaces of SnO. Compared with SnO(2), the structural and electronic properties of SnO bulk and its low-index surfaces present some unique features due to the dual valency of Sn. In SnO, the s orbital of Sn has larger contributions than its p and d orbitals in the first valence band (VB) and the p orbital of Sn has a larger contribution than its s and d orbitals in its conduction band (CB). In SnO(2), the p and d orbitals of Sn play an important role to form the upper part of the VB and its s orbital dominates in forming the lower parts of the VB and the CB. In both oxides, the s orbital of O forms the second VB with lower energy and its p orbitals are involved in forming the first VB and the CB. The calculated bulk modulus and cohesive energy agree well with the experimental measurements. By constructing all possible symmetrical low-index surfaces of SnO and the (111) surface of SnO(2), our results reveal that the calculated surface energies of SnO stoichiometric surfaces are lower than that of the corresponding surfaces of SnO(2) due to different bonding between Sn and O in these two oxides. The calculated stabilities of the low-index stoichiometric surfaces of SnO are in the order (001)>(101)/(011)>=(010)/(100)>(110)>(111) while the order in the case of SnO(2) is (110)>(010)/(100)>(101)/(011)>(001)>(111). The calculated relationships between surface free energies [gamma(p,T)] and oxygen chemical potentials [mu(O)(p,T)] indicate that the nonstoichiometric O-terminated (110) and (111) surfaces of SnO could be more stable than their corresponding stoichiometric ones when the mu(O)(p,T) reaches its higher O-rich bound, and one Sn-terminated nonstoichiometric (111) surface of SnO(2) could be more stable than its stoichiometric ones when the mu(O)(p,T) falls into its lower O-poor region. During surface formation from the bulk, the stable surface usually has small atom displacements. For both SnO and SnO(2) the atoms on the (111) surface have larger relaxations than on their other low-index surfaces. C1 [Duan, Yuhua] US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. [Duan, Yuhua] Parson, South Pk, PA 15129 USA. RP Duan, Y (reprint author), US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. EM duany@netl.doe.gov RI Duan, Yuhua/D-6072-2011 OI Duan, Yuhua/0000-0001-7447-0142 NR 73 TC 68 Z9 68 U1 6 U2 45 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 4 AR 045332 DI 10.1103/PhysRevB.77.045332 PG 22 WC Physics, Condensed Matter SC Physics GA 258JB UT WOS:000252863100102 ER PT J AU Fine, BV Egami, T AF Fine, B. V. Egami, T. TI Phase separation in the vicinity of quantum-critical doping concentration: Implications for high-temperature superconductors SO PHYSICAL REVIEW B LA English DT Article ID T-J MODEL; COPPER-OXIDE SUPERCONDUCTORS; BI2SR2CACU2O8+DELTA; PSEUDOGAP; STATE; LA2CUO4+DELTA AB A general quantitative measure of the tendency towards phase separation is introduced for systems exhibiting phase transitions or crossovers controlled by charge carrier concentration. This measure is devised for the situations when the quantitative knowledge of various contributions to free energy is incomplete, and is applied to evaluate the chances of electronic phase separation associated with the onset of antiferromagnetic correlations in high-temperature cuprate superconductors. The experimental phenomenology of lanthanum- and yittrium-based cuprates was used as input to this analysis. It is also pointed out that Coulomb repulsion between charge carriers separated by the distances of 1-3 lattice periods strengthens the tendency towards phase separation by accelerating the decay of antiferromagnetic correlations with doping. Overall, the present analysis indicates that cuprates are realistically close to the threshold of phase separation-nanoscale-limited in-plane or even macroscopic with charge density varying between adjacent crystal planes. C1 [Fine, B. V.; Egami, T.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. [Fine, B. V.] Univ Heidelberg, Inst Theoret Phys, D-69120 Heidelberg, Germany. [Egami, T.] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA. [Egami, T.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Fine, BV (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. EM B.Fine@thphys.uni-heidelberg.de; egami@utk.edu NR 48 TC 14 Z9 14 U1 1 U2 4 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 1 AR 014519 DI 10.1103/PhysRevB.77.014519 PG 13 WC Physics, Condensed Matter SC Physics GA 258IS UT WOS:000252862200102 ER PT J AU Fuentes-Cabrera, M Baskes, MI Melechko, AV Simpson, ML AF Fuentes-Cabrera, Miguel Baskes, M. I. Melechko, Anatoli V. Simpson, Michael L. TI Bridge structure for the graphene/Ni(111) system: A first principles study SO PHYSICAL REVIEW B LA English DT Article ID TOTAL-ENERGY CALCULATIONS; AUGMENTED-WAVE METHOD; GRAPHITIC CARBON; BASIS-SET; NI(111); SURFACE; METALS; NICKEL AB The structure of graphene on Ni(111) is studied with density functional theory (DFT). Six different structures, i.e., top-fcc, top-hcp, hcp-fcc, bridge-top, bridge-fcc, and bridge-hcp, were investigated. Bridge-top, bridge-fcc, and bridge-hcp are studied here. Top-fcc and hcp-fcc have been considered before, experimentally and theoretically, and regarded as energetically stable structures. The calculations employed the local density approximation (LDA) and the Perdew, Burke, and Ernzerhof (PBE) generalized-gradient approximation to DFT. The results showed that with PBE, none of the structures is stable at the experimentally relevant temperatures; with LDA, only bridge-top and top-fcc are stable. These findings suggest that it will be worthwhile to carry on new experimental studies to revisit the structural determination of the graphene/Ni(111) system, with special emphasis on testing whether bridge-top could exist by itself or coexist with other structures. C1 [Fuentes-Cabrera, Miguel; Melechko, Anatoli V.; Simpson, Michael L.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci & Comp Sci, Div Math, Oak Ridge, TN 37831 USA. [Melechko, Anatoli V.; Simpson, Michael L.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA. [Simpson, Michael L.] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA. [Baskes, M. I.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Fuentes-Cabrera, M (reprint author), Oak Ridge Natl Lab, Ctr Nanophase Mat Sci & Comp Sci, Div Math, POB 2008, Oak Ridge, TN 37831 USA. EM fuentescabma@ornl.gov RI Melechko, Anatoli/B-8820-2008; Simpson, Michael/A-8410-2011; Fuentes-Cabrera, Miguel/Q-2437-2015 OI Simpson, Michael/0000-0002-3933-3457; Fuentes-Cabrera, Miguel/0000-0001-7912-7079 NR 24 TC 98 Z9 98 U1 7 U2 56 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 3 AR 035405 DI 10.1103/PhysRevB.77.035405 PG 5 WC Physics, Condensed Matter SC Physics GA 258IZ UT WOS:000252862900119 ER PT J AU Hill, JM McQueeney, RJ Wu, R Dennis, K McCallum, RW Huang, M Lograsso, TA AF Hill, J. M. McQueeney, R. J. Wu, Ruqian Dennis, K. McCallum, R. W. Huang, M. Lograsso, T. A. TI Low temperature heat capacity of Fe(1-x)Ga(x) alloys with large magnetostriction SO PHYSICAL REVIEW B LA English DT Article ID FE-GA; NI-FE; IRON; MAGNETOELASTICITY; METALS AB The low temperature heat capacity C(p) of Fe(1-x)Ga(x) alloys with large magnetostriction has been investigated. The data were analyzed in the standard way using electron (gamma T) and phonon (beta T(3)) contributions. The Debye temperature Theta(D) decreases approximately linearly with increasing Ga concentration, consistent with previous resonant ultrasound measurements and measured phonon dispersion curves. Calculations of Theta(D) from lattice dynamical models and from measured elastic constants C(11), C(12), and C(44) are in agreement with the measured data. The linear coefficient of electronic specific heat gamma remains relatively constant as the Ga concentration increases, despite the fact that the magnetoelastic coupling increases. Band structure calculations show that this is due to the compensation of majority and minority spin states at the Fermi level. C1 [Hill, J. M.] Iowa State Univ, Inst Phys Res & Technol, Ames, IA 50011 USA. [McQueeney, R. J.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. [McQueeney, R. J.; Dennis, K.; McCallum, R. W.; Huang, M.; Lograsso, T. A.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. [Wu, Ruqian] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA. RP Hill, JM (reprint author), Iowa State Univ, Inst Phys Res & Technol, Ames, IA 50011 USA. EM mcqueeney@ameslab.gov RI Wu, Ruqian/C-1395-2013; McQueeney, Robert/A-2864-2016 OI Wu, Ruqian/0000-0002-6156-7874; McQueeney, Robert/0000-0003-0718-5602 NR 25 TC 2 Z9 2 U1 0 U2 9 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 1 AR 014430 DI 10.1103/PhysRevB.77.014430 PG 5 WC Physics, Condensed Matter SC Physics GA 258IS UT WOS:000252862200072 ER PT J AU Htoon, H Furis, M Crooker, SA Jeong, S Klimov, VI AF Htoon, H. Furis, M. Crooker, S. A. Jeong, S. Klimov, V. I. TI Linearly polarized 'fine structure' of the bright exciton state in individual CdSe nanocrystal quantum dots SO PHYSICAL REVIEW B LA English DT Article ID EXCHANGE INTERACTION; DARK-EXCITON; PHOTOLUMINESCENCE; CONFINEMENT; ORIENTATION; RELAXATION; MICROSCOPY; ELECTRON; EMISSION AB We report polarization-resolved, low-temperature, high-spectral-resolution studies of the photoluminescence from individual CdSe nanocrystal quantum dots (NQDs). The spectra reveal a 'fine structure' splitting of the bright exciton state in a subset of the studied NQDs. The two fine structure states are spectrally separated by an energy of up to 3 meV depending on NQD size and are characterized by linearly (and orthogonally) polarized emission dipoles. The average splitting scales approximately with inverse NQD volume, consistent with an anisotropic electron-hole exchange interaction which can result from a breakdown of cylindrical symmetry in some of the NQDs. C1 [Htoon, H.; Jeong, S.; Klimov, V. I.] Los Alamos Natl Lab, Ctr Integrated Nanotechnologies, Div Chem, Los Alamos, NM 87545 USA. [Furis, M.; Crooker, S. A.] Los Alamos Natl Lab, Natl High Magnet Fields Lab, Los Alamos, NM 87545 USA. RP Klimov, VI (reprint author), Los Alamos Natl Lab, Ctr Integrated Nanotechnologies, Div Chem, POB 1663, Los Alamos, NM 87545 USA. EM klimov@lanl.gov RI Furis, Madalina/F-8090-2015; OI Furis, Madalina/0000-0001-9007-5492; Jeong, Sohee/0000-0002-9863-1374; Klimov, Victor/0000-0003-1158-3179; Htoon, Han/0000-0003-3696-2896 NR 31 TC 25 Z9 25 U1 1 U2 18 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 3 AR 035328 DI 10.1103/PhysRevB.77.035328 PG 7 WC Physics, Condensed Matter SC Physics GA 258IZ UT WOS:000252862900109 ER PT J AU Huang, J Hyun, C Chuang, TM Kim, J Goodenough, JB Zhou, JS Mitchell, JF de Lozanne, A AF Huang, Junwei Hyun, Changbae Chuang, Tien-Ming Kim, Jeehoon Goodenough, J. B. Zhou, J. -S. Mitchell, J. F. de Lozanne, Alex TI Magnetic state of La(1.36)Sr(1.64)Mn(2)O(7) probed by magnetic force microscopy SO PHYSICAL REVIEW B LA English DT Article ID PHASE SEGREGATION; MAGNETORESISTANCE; MANGANITES; TRANSITION; CRYSTAL AB We have investigated the ferromagnetic (FM) domain structure of a single-crystal bilayered manganite La(2-2x)Sr(1+2x)Mn(2)O(7) (x=0.32) by using low-temperature magnetic force microscopy. We observed that below 65 K, the FM domains form stable treelike patterns with out-of-plane magnetization. With increasing temperature, the FM domain patterns gradually change in the form of domain wall motion. Above 80 K, the FM domain patterns change more and more with each temperature step. The magnetization changes from the out-of-plane to an in-plane direction around 88 K. The in-plane FM domains almost completely disappear near the Curie temperature of this sample (T(C)approximate to 110 K), where the resistivity exhibits a sharp increase. We also observed large changes in the magnetic structures upon thermal cycling. We concluded that the formation of FM domains at low temperatures (T < 80 K) is determined by the energy associated with surface magnetic free poles and domain walls. At high temperatures (80 K < T < T(C)), the two-dimensional FM fluctuations in the basal plane may also play an important role in forming the domain structures. The evolution of the FM domain patterns with temperature coincides with the change in resistivity. C1 [Huang, Junwei; Hyun, Changbae; Chuang, Tien-Ming; Kim, Jeehoon; Goodenough, J. B.; Zhou, J. -S.; de Lozanne, Alex] Univ Texas Austin, Dept Phys, Texas Mat Inst, Austin, TX 78712 USA. [Mitchell, J. F.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP de Lozanne, A (reprint author), Univ Texas Austin, Dept Phys, Texas Mat Inst, Austin, TX 78712 USA. EM delozanne@physics.utexas.edu RI Kim, Jeehoon/K-3763-2012; de Lozanne, Alex/C-9693-2013; OI Kim, Jeehoon/0000-0002-5742-5347; de Lozanne, Alex/0000-0003-2950-4707; Goodenough, John Bannister/0000-0001-9350-3034 NR 24 TC 9 Z9 9 U1 2 U2 6 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 2 AR 024405 DI 10.1103/PhysRevB.77.024405 PG 5 WC Physics, Condensed Matter SC Physics GA 258IW UT WOS:000252862600048 ER PT J AU Jiang, JS Pearson, JE Bader, SD AF Jiang, J. S. Pearson, J. E. Bader, S. D. TI Absence of spin transport in the organic semiconductor Alq(3) SO PHYSICAL REVIEW B LA English DT Article ID CHARGE INJECTION; INTERFACE; ELECTRON; DEVICES; METAL; MAGNETORESISTANCE; MOLECULES; ALUMINUM; FUTURE; ENERGY AB There have been differing interpretations regarding the magnetoresistance (MR) reported in spin-valve structures containing thick layers of the organic semiconductor tris-(8-hydroxyquinoline) aluminum (Alq(3)). While some attribute it to spin injection and transport in Alq(3), others suggest tunneling through locally thin regions of the Alq(3) layer as the mechanism. We present results of magnetotransport and charge transport measurements on Alq(3)-based spin valves and unipolar devices where the Alq(3) thickness is beyond the tunneling limit. We observe no measurable MR in the Fe/Alq(3)/Co spin valve structures. Measurements of temperature-dependent current-voltage characteristics and comparisons with unipolar devices show that charge transport in Fe/Alq(3)/Co spin valves is by holes only and is injection-limited. The hole-only transport in Alq(3) is stable only at low current densities. This supports the tunneling interpretation of the earlier reported MR. Similar to inorganic semiconductors, the large conductivity mismatch between the metal electrodes and the organic semiconductor prevents spin injection. However, inserting a tunnel barrier between the magnetic electrode and the organic semiconductor did not improve spin injection. C1 [Jiang, J. S.; Pearson, J. E.; Bader, S. D.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Jiang, JS (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Bader, Samuel/A-2995-2013; Shi, Shengwei/E-3355-2010; Riminucci, Alberto/D-7525-2011 OI Shi, Shengwei/0000-0002-3298-1726; Riminucci, Alberto/0000-0003-0976-1810 NR 33 TC 79 Z9 79 U1 3 U2 20 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 3 AR 035303 DI 10.1103/PhysRevB.77.035303 PG 7 WC Physics, Condensed Matter SC Physics GA 258IZ UT WOS:000252862900084 ER PT J AU Kalinin, SV Meunier, V AF Kalinin, Sergei V. Meunier, Vincent TI Electronic flexoelectricity in low-dimensional systems SO PHYSICAL REVIEW B LA English DT Article ID MOLECULAR-ORBITAL METHODS; WALLED CARBON NANOTUBES; BASIS-SETS; PIEZOELECTRICITY AB Symmetry breaking at surfaces and interfaces and the capability to support large strain gradients in nanoscale systems enable unusual forms of electromechanical coupling. Here, we introduce the concept of electronic flexoelectricity, a phenomenon that is manifested when the mechanical deformation of nonpolar quantum systems results in the emergence of net dipole moments and hence linear electromechanical coupling proportional to local curvature. The concept is illustrated in carbon systems, including polyacetylene and nanographitic ribbons. Using density functional theory calculations for systems made of up to 400 atoms, we determine the flexoelectric coefficients to be of the order of similar to 0.1e, in agreement with the prediction of linear theory. The implications of electronic flexoelectricity on electromechanical device applications and physics of carbon-based materials are discussed. C1 [Kalinin, Sergei V.; Meunier, Vincent] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Kalinin, SV (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RI Meunier, Vincent/F-9391-2010; Kalinin, Sergei/I-9096-2012 OI Meunier, Vincent/0000-0002-7013-179X; Kalinin, Sergei/0000-0001-5354-6152 NR 33 TC 57 Z9 57 U1 1 U2 26 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 3 AR 033403 DI 10.1103/PhysRevB.77.033403 PG 4 WC Physics, Condensed Matter SC Physics GA 258IZ UT WOS:000252862900018 ER PT J AU Koshelev, AE Bulaevskii, LN AF Koshelev, A. E. Bulaevskii, L. N. TI Resonant electromagnetic emission from intrinsic Josephson-junction stacks with laterally modulated Josephson critical current SO PHYSICAL REVIEW B LA English DT Article ID VORTEX STATE; PLASMA RESONANCE; SINGLE-CRYSTALS; MESA STRUCTURES; FLUX-FLOW; RADIATION; ARRAYS; BI2SR2CACU2O8+DELTA; SUPERCONDUCTORS; SYNCHRONIZATION AB Intrinsic Josephson-junction stacks realized in mesas fabricated out of high-temperature superconductors may be used as sources of coherent electromagnetic radiation in the terahertz range. The major challenge is to synchronize Josephson oscillations in all junctions in the stack to get significant radiation out of the crystal edge parallel to the c axis. We suggest a simple way to solve this problem via artificially prepared lateral modulation of the Josephson critical current identical in all junctions. In such a stack, phase oscillations excite the in-phase Fiske mode when the Josephson frequency matches the Fiske-resonance frequency which is set by the stack lateral size. The powerful, almost standing electromagnetic wave is excited inside the crystal in the resonance. This wave is homogeneous across the layers, meaning that the oscillations are synchronized in all junctions in the stack. We evaluate behavior of the I-V characteristics and radiated power near the resonance for arbitrary modulation and find exact solutions for several special cases corresponding to symmetric and asymmetric modulations of the critical current. C1 [Koshelev, A. E.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. [Bulaevskii, L. N.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Koshelev, AE (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Koshelev, Alexei/K-3971-2013 OI Koshelev, Alexei/0000-0002-1167-5906 NR 45 TC 82 Z9 82 U1 0 U2 7 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 1 AR 014530 DI 10.1103/PhysRevB.77.014530 PG 15 WC Physics, Condensed Matter SC Physics GA 258IS UT WOS:000252862200113 ER PT J AU Li, M Chung, PW Cox, E Jenks, CJ Thiel, PA Evans, JW AF Li, Maozhi Chung, P. -W. Cox, E. Jenks, C. J. Thiel, P. A. Evans, J. W. TI Exploration of complex multilayer film growth morphologies: STM analysis and predictive atomistic modeling for Ag on Ag(111) SO PHYSICAL REVIEW B LA English DT Article ID BY-LAYER GROWTH; ISLAND NUCLEATION; EPITAXY; METAL AB Scanning tunneling microscopy studies are integrated with development of a realistic atomistic model to both characterize and elucidate the complex mounded morphologies formed by deposition of Ag on Ag(111) at 150 and 180 K. Threefold symmetric lateral shapes of islands and mounds are shown to reflect the influence of a nonuniform step edge barrier inhibiting interlayer transport. Modeling of structure at the mound peaks leads to a sensitive estimate of the magnitude of this large barrier. C1 Iowa State Univ, Inst Phys Res & Technol, Dept Chem, Ames Lab US DOE, Ames, IA 50011 USA. Iowa State Univ, Inst Phys Res & Technol, Dept Mat Sci & Engn, Ames Lab US DOE, Ames, IA 50011 USA. Iowa State Univ, Inst Phys Res & Technol, Dept Math, Ames Lab US DOE, Ames, IA USA. RP Li, M (reprint author), Iowa State Univ, Inst Phys Res & Technol, Dept Chem, Ames Lab US DOE, Ames, IA 50011 USA. NR 23 TC 14 Z9 15 U1 0 U2 10 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 3 AR 033402 DI 10.1103/PhysRevB.77.033402 PG 4 WC Physics, Condensed Matter SC Physics GA 258IZ UT WOS:000252862900017 ER PT J AU Li, SL Yamani, Z Kang, HJ Segawa, K Ando, Y Yao, X Mook, HA Dai, PC AF Li, Shiliang Yamani, Zahra Kang, Hye Jung Segawa, Kouji Ando, Yoichi Yao, Xin Mook, H. A. Dai, Pengcheng TI Quantum spin excitations through the metal-to-insulator crossover in YBa(2)Cu(3)O(6+y) SO PHYSICAL REVIEW B LA English DT Article ID TRANSITION-TEMPERATURE SUPERCONDUCTOR; MAGNETIC EXCITATIONS; LA2-XSRXCUO4; DYNAMICS; STRIPES; PR0.88LACE0.12CUO4-DELTA; STATE AB We use inelastic neutron scattering to study the temperature dependence of the spin excitations of a detwinned superconducting YBa(2)Cu(3)O(6.45) (T(c)=48 K). In contrast to earlier work on YBa(2)Cu(3)O(6.5) (T(c)=58 K), where the prominent features in the magnetic spectra consist of a sharp collective magnetic excitation termed "resonance" and a large (h omega approximate to 15 meV) superconducting spin gap, we find that the spin excitations in YBa(2)Cu(3)O(6.45) are gapless and have a much broader resonance. Our detailed mapping of magnetic scattering along the a(*)/b(*)-axis directions at different energies reveals that spin excitations are unisotropic and consistent with the "hourglasslike" dispersion along the a(*)-axis direction near the resonance, but they are isotropic at lower energies. Since a fundamental change in the low-temperature normal state of YBa(2)Cu(3)O(6+y) when superconductivity is suppressed takes place at y similar to 0.5 with a metal-to-insulator crossover (MIC), where the ground state transforms from a metallic to an insulatinglike phase, our results suggest a clear connection between the large change in spin excitations and the MIC. The resonance therefore is a fundamental feature of metallic ground state superconductors and a consequence of high-T(c) superconductivity. C1 [Li, Shiliang; Dai, Pengcheng] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. [Yamani, Zahra] Chalk River Labs, Natl Res Council, Canadian Neutron Beam Ctr, Chalk River, ON K0J 1J0, Canada. [Kang, Hye Jung] NIST, NIST Ctr Neutron Res, Gaithersburg, MD 20899 USA. [Segawa, Kouji] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA. [Segawa, Kouji] Cent Res Inst Elect Power Ind, Tokyo 2018511, Japan. [Ando, Yoichi] Osaka Univ, Inst Sci & Ind Res, Osaka 5670047, Japan. [Yao, Xin] Shanghai Jiao Tong Univ, Dept Phys, Shanghai 200030, Peoples R China. [Mook, H. A.; Dai, Pengcheng] Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA. RP Li, SL (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. EM slli@utk.edu; daip@ornl.gov RI Li, Shiliang/B-9379-2009; yamani, zahra/B-7892-2012; Dai, Pengcheng /C-9171-2012; Ando, Yoichi/B-8163-2013; SEGAWA, Kouji/D-4204-2014; YAO, XIN/O-5678-2015 OI Dai, Pengcheng /0000-0002-6088-3170; Ando, Yoichi/0000-0002-3553-3355; SEGAWA, Kouji/0000-0002-3633-4809; NR 46 TC 19 Z9 19 U1 0 U2 6 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 1 AR 014523 DI 10.1103/PhysRevB.77.014523 PG 8 WC Physics, Condensed Matter SC Physics GA 258IS UT WOS:000252862200106 ER PT J AU Luo, ZT Papadimitrakopoulos, F Doorn, SK AF Luo, Zhengtang Papadimitrakopoulos, Fotios Doorn, Stephen K. TI Bundling effects on the intensities of second-order Raman modes in semiconducting single-walled carbon nanotubes SO PHYSICAL REVIEW B LA English DT Article ID RESONANCE RAMAN; AGGREGATION; SPECTRA; FLUORESCENCE; SPECTROSCOPY; EXCITONS; STATE AB The second-order Raman modes in the range of 380 - 650 cm(-1) were investigated for individually dispersed and aggregated HiPco single-walled carbon nanotubes (SWNTs) using a 700 - 985 nm tunable laser source. For individually dispersed SWNTs, this Raman region displays relatively weak response from both intermediate frequency modes (IFMs) and the overtones of the radial breathing mode (RBM), with the latter dominating. In contrast, for aggregated SWNTs, the IFMs dominate and gain significant intensity relative to the RBM fundamental. Utilizing the correlation between RBM overtone and RBM fundamental intensity ratio as a function of laser energy, we derived Huang-Rhys factors for several (n,m) nanotube species in both individually dispersed and aggregated states. These values were further used to obtain the corresponding absolute values of the exciton-phonon interaction matrix element for these nanotube species. It is demonstrated that the chiral-angle dependence of exciton-phonon coupling parameters is similar for dispersed and bundled samples. However, we find that bundling results in a decrease in the exciton-phonon coupling for the RBM, while the IFMs display the opposite behavior. These findings are particularly relevant for further clarifying the factors that govern Raman intensities and provide a tool for the selective characterization of various mod(n - m,3)=2(n,m)-SWNTs as a function of their aggregation state. C1 [Luo, Zhengtang; Papadimitrakopoulos, Fotios] Univ Connecticut, Dept Chem, Polymer Program, Nanomat Optoelect Lab, Storrs, CT 06269 USA. [Doorn, Stephen K.] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA. RP Papadimitrakopoulos, F (reprint author), Univ Connecticut, Dept Chem, Polymer Program, Nanomat Optoelect Lab, U-60, Storrs, CT 06269 USA. EM papadim@mail.ims.uconn.edu; skdoorn@lanl.gov RI luo, Zhengtang/C-4270-2008 OI luo, Zhengtang/0000-0002-5134-9240 NR 44 TC 15 Z9 15 U1 0 U2 11 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 3 AR 035421 DI 10.1103/PhysRevB.77.035421 PG 9 WC Physics, Condensed Matter SC Physics GA 258IZ UT WOS:000252862900135 ER PT J AU Manley, ME Asta, M Lashley, JC Retford, CM Hults, WL Taylor, RD Thoma, DJ Smith, JL Hackenberg, RE Littrell, K AF Manley, M. E. Asta, M. Lashley, J. C. Retford, C. M. Hults, W. L. Taylor, R. D. Thoma, D. J. Smith, J. L. Hackenberg, R. E. Littrell, K. TI Soft-phonon feature, site defects, and a frustrated phase transition in Ni50Ti47Fe3: Experiments and first-principles calculations SO PHYSICAL REVIEW B LA English DT Article ID BRILLOUIN-ZONE INTEGRATION; AUGMENTED-WAVE METHOD; SHAPE-MEMORY ALLOYS; ULTRASOFT PSEUDOPOTENTIALS; INTERMEDIATE PHASE; NITI; TRANSFORMATION; TI50NI47FE3; METALS AB A soft-phonon feature associated with the shape-memory transition in NiTi is observed in the phonon density of states (DOS) of the B2 phase of both NiTi and Ni50Ti47Fe3 (with Fe substituted for Ti) using inelastic neutron scattering. In both alloys, the feature softens with decreasing temperature, but the softening occurs about 100 K lower in the Fe-substituted alloy, indicating a decreased transition temperature. Electrical resistivity and magnetic susceptibility verify the decreased transition temperature but also show that the transition develops second-order-like behavior similar to that observed by others in Ni44Ti50Fe6 (with Fe substituted for Ni). First-principles calculations supported by Mossbauer spectroscopy and neutron diffraction indicate a double-defect scenario, where Fe occupies Ni sites and the displaced Ni occupies the empty Ti sites in the Ti-substituted alloys. A comparison between the current results for Ti-substituted alloys, and related experimental data for alloys featuring Fe substitution for Ni, indicates that the instability temperature is controlled by the number of Fe atoms occupying the Ni sites, while the second-order-like behavior is caused by the addition of the Ni antisite defects. We argue that this latter behavior results from percolated networks of interacting defects acting to frustrate the symmetry-breaking strains. C1 [Manley, M. E.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. [Manley, M. E.; Asta, M.; Retford, C. M.] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA. [Lashley, J. C.; Hults, W. L.; Taylor, R. D.; Thoma, D. J.; Smith, J. L.; Hackenberg, R. E.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Littrell, K.] Argonne Natl Lab, Argonne, IL 60439 USA. RP Manley, ME (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RI Manley, Michael/N-4334-2015; Littrell, Kenneth/D-2106-2013; OI Littrell, Kenneth/0000-0003-2308-8618; Hackenberg, Robert/0000-0002-0380-5723 NR 32 TC 2 Z9 2 U1 0 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 2 AR 024201 DI 10.1103/PhysRevB.77.024201 PG 7 WC Physics, Condensed Matter SC Physics GA 258IW UT WOS:000252862600029 ER PT J AU Mizoguchi, T Varela, M Buban, JP Yamamoto, T Ikuhara, Y AF Mizoguchi, Teruyasu Varela, Maria Buban, James P. Yamamoto, Takahisa Ikuhara, Yuichi TI Site dependence and peak assignment of YBa(2)Cu(3)O(7-x)OK-edge electron energy loss near-edge fine structure SO PHYSICAL REVIEW B LA English DT Article ID SUPERCONDUCTIVITY; ELNES; YBA2CU3O7-DELTA; CHEMISTRY; XANES; STATE AB The different peaks in the O K-edge near-edge fine structure of YBa(2)Cu(3)O(7-x) are interpreted here by using overlap population diagram. This study identifies the peaks in the spectrum as follows: (1) the first peak purely originates from O-Cu interactions, (2) the contributions from Y, Ba, and Cu are comparable at the second and third peaks, (3) and the fourth peak has the largest O-Cu interactions. Therefore, the first and/or fourth peaks and second and/or third peaks can be sensitive to the changes in the atomic and electronic structure at Cu and Y/Ba sites, respectively. The spectral differences depending on the atomic site are also discussed. C1 [Mizoguchi, Teruyasu; Buban, James P.; Ikuhara, Yuichi] Univ Tokyo, Inst Engn Innovat, Tokyo 1138656, Japan. [Varela, Maria] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA. [Yamamoto, Takahisa] Univ Tokyo, Dept Adv Mat Sci, Chiba 2778561, Japan. RP Mizoguchi, T (reprint author), Univ Tokyo, Inst Engn Innovat, 2-11-16 Yayoi, Tokyo 1138656, Japan. RI Ikuhara, Yuichi/F-3066-2010; Mizoguchi, Teruyasu/B-8044-2008; Varela, Maria/H-2648-2012; Varela, Maria/E-2472-2014; Ikuhara, Yuichi/N-1001-2015 OI Mizoguchi, Teruyasu/0000-0003-3712-7307; Varela, Maria/0000-0002-6582-7004; Ikuhara, Yuichi/0000-0003-3886-005X NR 27 TC 13 Z9 13 U1 0 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 2 AR 024504 DI 10.1103/PhysRevB.77.024504 PG 5 WC Physics, Condensed Matter SC Physics GA 258IW UT WOS:000252862600078 ER PT J AU Mudryk, Y Paudyal, D Pecharsky, VK Gschneidner, KA AF Mudryk, Ya. Paudyal, D. Pecharsky, V. K. Gschneidner, K. A., Jr. TI Magnetostructural transition in Gd5Si0.5Ge3.5: Magnetic and x-ray powder diffraction measurements, and theoretical calculations SO PHYSICAL REVIEW B LA English DT Article ID ELECTRONIC-STRUCTURE; MAGNETOOPTICAL PROPERTIES; GIANT MAGNETORESISTANCE; MAGNETOCALORIC COMPOUND; CORRELATION-ENERGY; GD-5(SIXGE1-X)(4); GD-5(SI2GE2); GD-5(SI0.1GE0.9)(4); BEHAVIOR; GE AB Magnetostructural transition, which occurs at 77 K (89 K) in the heat-treated (as cast) Gd5Si0.5Ge3.5, has been examined both experimentally, by magnetic and x-ray powder diffraction measurements, and theoretically, by ab initio calculations. Similar to that observed in a related Gd5Si0.4Ge3.6 alloy, this first-order phase transformation from a high-temperature Sm5Ge4-type [O(II)] phase to a low-temperature Gd5Si4-type [O(I)] phase is accompanied by an antiferromagnetic to ferromagnetic transition. The H-T phase diagram, which includes both structural and magnetic features, has been constructed. The total energy as a function of unit-cell volume calculated from first principles confirms the experimentally observed first-order nature of the magnetostructural transformation. Experimental results supported by theoretical calculations indicate that Si promotes the O(II)-Gd5Si0.5Ge3.5 to O(I)-Gd5Si0.5Ge3.5 transformation by exerting chemical pressure. C1 [Mudryk, Ya.; Paudyal, D.; Pecharsky, V. K.; Gschneidner, K. A., Jr.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. [Pecharsky, V. K.; Gschneidner, K. A., Jr.] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA. RP Pecharsky, VK (reprint author), Iowa State Univ, Ames Lab, Ames, IA 50011 USA. EM vitkp@ameslab.gov NR 64 TC 25 Z9 25 U1 2 U2 9 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 2 AR 024408 DI 10.1103/PhysRevB.77.024408 PG 12 WC Physics, Condensed Matter SC Physics GA 258IW UT WOS:000252862600051 ER PT J AU Ru, N Condron, CL Margulis, GY Shin, KY Laverock, J Dugdale, SB Toney, MF Fisher, IR AF Ru, N. Condron, C. L. Margulis, G. Y. Shin, K. Y. Laverock, J. Dugdale, S. B. Toney, M. F. Fisher, I. R. TI Effect of chemical pressure on the charge density wave transition in rare-earth tritellurides RTe(3) SO PHYSICAL REVIEW B LA English DT Article ID PHASE-TRANSITION; SMTE3 AB The charge density wave transition is investigated in the bilayer family of rare-earth tritelluride RTe(3) compounds (R=Sm, Gd, Tb, Dy, Ho, Er, and Tm) via high-resolution x-ray diffraction and electrical resistivity. The transition temperature increases monotonically with increasing lattice parameter from 244(3) K for TmTe(3) to 416(3) K for SmTe(3). The heaviest members of the series, R=Dy, Ho, Er, and Tm, are observed to have a second transition at a lower temperature, which marks the onset of an additional charge density wave with wave vector almost equal in magnitude to the first, but oriented in the perpendicular direction. C1 [Ru, N.; Margulis, G. Y.; Shin, K. Y.; Fisher, I. R.] Stanford Univ, Geballe Lab Adv Mat, Stanford, CA 94305 USA. [Ru, N.; Margulis, G. Y.; Shin, K. Y.; Fisher, I. R.] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA. [Condron, C. L.; Toney, M. F.] Stanford Linear Accelerator Ctr, Stanford Synchrotron Radiat Lab, Menlo Pk, CA 94025 USA. [Laverock, J.; Dugdale, S. B.] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England. RP Ru, N (reprint author), Stanford Univ, Geballe Lab Adv Mat, Stanford, CA 94305 USA. RI Dugdale, Stephen/F-4066-2011; Laverock, Jude/G-4537-2010 OI Dugdale, Stephen/0000-0002-2738-2235; Laverock, Jude/0000-0003-3653-8171 NR 31 TC 80 Z9 80 U1 4 U2 19 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 3 AR 035114 DI 10.1103/PhysRevB.77.035114 PG 9 WC Physics, Condensed Matter SC Physics GA 258IZ UT WOS:000252862900047 ER PT J AU Sales, BC Jin, R Mandrus, D AF Sales, Brian C. Jin, Rongying Mandrus, David TI Orientation dependence of the anomalous Hall resistivity in single crystals of Yb14MnSb11 SO PHYSICAL REVIEW B LA English DT Article ID KONDO-LATTICE; BERRY PHASE; FERROMAGNETICS; CEPDSB AB The Hall resistivity, electrical resistivity, and magnetization of single crystals of the tetragonal ferromagnet Yb14MnSb11 are reported as a function of the direction of the current I and magnetic field H with respect to the principal crystallographic axes. With I along the unique c direction and H in the a-b plane, the anomalous Hall resistivity in the limit of zero applied field is negative for all temperatures T < T-C=53 K. In this direction, the anomalous Hall effect behaves in a manner similar to that observed in other ferromagnets such as Fe, Co, Mn5Ge3, and EuFe4Sb12. However, with I in the a-b plane and H along the c direction, the anomalous Hall behavior is completely different. The anomalous Hall resistivity data are positive for all T < T-C and a similar analysis of these data fails. In this direction, the anomalous response is not a simple linear function of the magnetization order parameter, and for a fixed temperature, (T < T-C) does not depend on the magnitude of the magnetization perpendicular to the current in the a-b plane. That is, when the magnetization and applied field are rotated away from the c direction, the anomalous Hall resistivity does not change. In all other soft ferromagnets that we have examined (including La doped crystals of Yb14MnSb11, i.e., Yb13.3La0.7MnSb11), rotation of the magnetization and magnetic field by an angle theta away from a direction perpendicular to I results in a decrease in both the anomalous and normal portions of the Hall resistivity that approximately scales as cos(theta). We suggest that the unique response exhibited by Yb14MnSb11 is a direct reflection of the delicate balance between ferromagnetism and Kondo screening. C1 [Sales, Brian C.; Jin, Rongying; Mandrus, David] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA. RP Sales, BC (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, POB 2008, Oak Ridge, TN 37831 USA. RI Mandrus, David/H-3090-2014 NR 39 TC 18 Z9 19 U1 1 U2 18 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 2 AR 024409 DI 10.1103/PhysRevB.77.024409 PG 9 WC Physics, Condensed Matter SC Physics GA 258IW UT WOS:000252862600052 ER PT J AU Shan, L Huang, Y Wang, YL Li, SL Zhao, J Dai, PC Zhang, YZ Ren, C Wen, HH AF Shan, L. Huang, Y. Wang, Y. L. Li, Shiliang Zhao, Jun Dai, Pengcheng Zhang, Y. Z. Ren, C. Wen, H. H. TI Weak-coupling Bardeen-Cooper-Schrieffer superconductivity in the electron-doped cuprate superconductors SO PHYSICAL REVIEW B LA English DT Article ID D-WAVE SUPERCONDUCTORS; TUNNELING SPECTROSCOPY; TRANSITION; TEMPERATURE; PSEUDOGAP AB We use in-plane tunneling spectroscopy to study the temperature dependence of the local superconducting gap Delta(T) in electron-doped copper oxides with various T(c)'s and Ce-doping concentrations. We show that the temperature dependence of Delta(T) follows the expectation of the Bardeen-Cooper-Schrieffer (BCS) theory of superconductivity, where Delta(0)/k(B)T(c)approximate to 1.72 +/- 0.15 and Delta(0) is the average superconducting gap across the Fermi surface, for all the doping levels investigated. These results suggest that the electron-doped superconducting copper oxides are weak-coupling BCS superconductors. C1 [Shan, L.; Huang, Y.; Wang, Y. L.; Zhang, Y. Z.; Ren, C.; Wen, H. H.] Chinese Acad Sci, Natl Lab Superconduct, Inst Phys, Beijing 100080, Peoples R China. [Li, Shiliang; Zhao, Jun; Dai, Pengcheng] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100080, Peoples R China. [Li, Shiliang; Zhao, Jun; Dai, Pengcheng] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. [Dai, Pengcheng] Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA. RP Shan, L (reprint author), Chinese Acad Sci, Natl Lab Superconduct, Inst Phys, POB 603, Beijing 100080, Peoples R China. EM shanlei@ssc.iphy.ac.cn; hhwen@aphy.iphy.ac.cn RI Li, Shiliang/B-9379-2009; Zhao, Jun/A-2492-2010; Dai, Pengcheng /C-9171-2012; Wang, Yong-Lei/N-7940-2013 OI Zhao, Jun/0000-0002-0421-8934; Dai, Pengcheng /0000-0002-6088-3170; Wang, Yong-Lei/0000-0003-0391-7757 NR 36 TC 25 Z9 26 U1 2 U2 13 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 1 AR 014526 DI 10.1103/PhysRevB.77.014526 PG 5 WC Physics, Condensed Matter SC Physics GA 258IS UT WOS:000252862200109 ER PT J AU Singh, DJ AF Singh, D. J. TI Comment on "Evidence for strong electronic correlations in the spectra of Sr(2)RuO(4)" SO PHYSICAL REVIEW B LA English DT Editorial Material ID MEAN-FIELD THEORY; SUPERCONDUCTOR SR2RUO4; SPIN FLUCTUATIONS; FERMI-SURFACE; LDA+U METHOD; FERROMAGNETISM; TRIPLET; SYSTEMS; STATES; NIO AB It is pointed out that O 2p states dominate the electronic structure of Sr(2)RuO(4) in the similar to-3 eV region and can explain the observation of a peak in the density of states in photoemission experiments. This contradicts claims that a lower Hubbard band is needed at 3 eV binding energy. C1 Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA. RP Singh, DJ (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA. RI Singh, David/I-2416-2012 NR 41 TC 6 Z9 6 U1 0 U2 9 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 4 AR 046101 DI 10.1103/PhysRevB.77.046101 PG 4 WC Physics, Condensed Matter SC Physics GA 258JB UT WOS:000252863100137 ER PT J AU Stercel, F Egami, T Mook, HA Yethiraj, M Chung, JH Arai, M Frost, C Dogan, F AF Stercel, F. Egami, T. Mook, H. A. Yethiraj, M. Chung, J. -H. Arai, M. Frost, C. Dogan, F. TI Composition dependence of the in-plane Cu-O bond-stretching LO phonon mode in YBa2Cu3O6+x SO PHYSICAL REVIEW B LA English DT Article ID HIGH-TEMPERATURE SUPERCONDUCTORS; T-J MODEL; COPPER-OXIDE SUPERCONDUCTORS; LATTICE-DYNAMICS; BI2SR2CACU2O8+DELTA; LA1.85SR0.15CUO4; INHOMOGENEITY; EXCITATIONS; DENSITY AB An inelastic pulsed neutron scattering study was performed on the dependence of the dispersion and spectral intensity of the in-plane Cu-O bond-stretching LO phonon mode on doped charge density. The measurements were made in the time-of-flight mode with the multiangle position sensitive spectrometer of the ISIS facility on single crystals of YBa2Cu3O6+x (x=0.15, 0.35, 0.6, 0.7, and 0.95). The focus of the study is the in-plane Cu-O bond-stretching LO phonon mode, which is known for strong electron-phonon coupling and unusual dependence on composition and temperature. It is shown that the dispersions for the samples with x=0.35, 0.6, and 0.7 are similar to the superposition of those for x=0.15 and 0.95 samples, and cannot be explained in terms of the structural anisotropy. It is suggested that the results are consistent with the model of nanoscale electronic phase separation, with the fraction of the phases being dependent on the doped charge density. C1 [Stercel, F.; Chung, J. -H.] Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA. [Egami, T.] Univ Tennessee, Joint Inst Neutron Sci, Knoxville, TN 37996 USA. [Egami, T.] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA. [Egami, T.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. [Egami, T.; Mook, H. A.; Yethiraj, M.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Yethiraj, M.] Australian Nucl Sci & Technol Org, Bragg Inst, Menai, NSW 2234, Australia. [Chung, J. -H.] Korea Univ, Dept Phys, Seoul 126713, South Korea. [Arai, M.] Japan Atom Energy Agcy, J PARC Ctr, Tokai, Ibaraki 3191195, Japan. [Frost, C.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England. [Dogan, F.] Univ Missouri, Dept Mat Sci, Rolla, MO 65409 USA. RP Stercel, F (reprint author), Univ Penn, Dept Mat Sci & Engn, 3231 Walnut St, Philadelphia, PA 19104 USA. NR 42 TC 8 Z9 8 U1 0 U2 4 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 1 AR 014502 DI 10.1103/PhysRevB.77.014502 PG 9 WC Physics, Condensed Matter SC Physics GA 258IS UT WOS:000252862200085 ER PT J AU Tang, SJ Jeng, HT Hsue, CS Ismail Sprunger, PT Plummer, EW AF Tang, S. -J. Jeng, H. -T. Hsue, Chen-Shiung Ismail Sprunger, P. T. Plummer, E. W. TI Surface state influence on the surface lattice structure in Be(10(1)over-bar0) SO PHYSICAL REVIEW B LA English DT Article ID TOTAL-ENERGY CALCULATIONS; AUGMENTED-WAVE METHOD; CORE-LEVEL SHIFTS; PHOTOEMISSION SPECTRA; BE(0001) SURFACE; METAL-SURFACES; FRIEDEL OSCILLATIONS; ELECTRONIC-STRUCTURE; BASIS-SET; RELAXATION AB Three major surface related bands, S1, S2, and surface resonance, of Be(10 (1) over bar0) dispersing in the large projected bulk band gaps from (A) over bar to (Gamma) over bar are reexamined by first-principles calculations. A comparison between experimentally and theoretically determined surface electronic structure reveals that charge redistribution dictates and explains the observed abnormal inward relaxation (T=0) and thermal contraction (T > 0) of the surface lattice structure. Through first-principles calculations, possible mechanisms of this synergistic interplay between the electronic and lattice structures are proposed. C1 [Tang, S. -J.; Jeng, H. -T.; Hsue, Chen-Shiung] Natl Tsing Hua Univ, Dept Phys & Astron, Hsinchu 30013, Taiwan. [Tang, S. -J.] Natl Synchrotron Radiat Res Ctr, Hsinchu 30076, Taiwan. [Jeng, H. -T.] Acad Sinica, Inst Phys, Taipei 11529, Taiwan. [Ismail; Plummer, E. W.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. [Plummer, E. W.] Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA. [Sprunger, P. T.] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70806 USA. RP Tang, SJ (reprint author), Natl Tsing Hua Univ, Dept Phys & Astron, Hsinchu 30013, Taiwan. EM sjtang@phys.nthu.edu.tw; jeng@phys.sinica.edu.tw NR 38 TC 10 Z9 10 U1 0 U2 4 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 4 AR 045405 DI 10.1103/PhysRevB.77.045405 PG 6 WC Physics, Condensed Matter SC Physics GA 258JB UT WOS:000252863100107 ER PT J AU Vestgarden, JI Bergli, J Galperin, YM AF Vestgarden, J. I. Bergli, J. Galperin, Y. M. TI Nonlinearly driven Landau-Zener transition in a qubit with telegraph noise SO PHYSICAL REVIEW B LA English DT Article AB We study Landau-Zener-like dynamics of a qubit influenced by transverse random telegraph noise. The telegraph noise is characterized by its coupling strength upsilon and switching rate gamma. The qubit energy levels are driven nonlinearly in time, proportional to sgn(t)vertical bar t vertical bar(nu), and we derive the transition probability in the limit of sufficiently fast noise, for arbitrary exponent nu. The level occupation after the transition depends strongly on nu, and there exists a critical nu(c) with qualitative difference between nu nu(c). When nu nu(c), the system keeps some coherence depending on the strength of the noise, and in the limit of weak noise, no transition takes place. For fast noise nu(c)=1/2, while for slow noise nu(c)< 1/2 and it depends on gamma. We also discuss phase coherence, which is relevant when the qubit has a nonzero minimum energy gap. The qualitative dependency on nu is the same for the phase coherence and level occupation. The state after the transition does, in general, depend on gamma. For fixed upsilon, increasing gamma decreases the final state coherence when nu < 1 and increases the final state coherence when nu>1. Only the conventional linear driving is independent of gamma. C1 [Vestgarden, J. I.; Bergli, J.; Galperin, Y. M.] Univ Oslo, Dept Phys, N-0316 Oslo, Norway. [Galperin, Y. M.] Univ Oslo, Ctr Adv Mat & Nanotechnol, N-0316 Oslo, Norway. [Galperin, Y. M.] Russian Acad Sci, AF Ioffe Physicotech Inst, St Petersburg 194021, Russia. [Galperin, Y. M.] Argonne Natl Lab, Argonne, IL 60439 USA. RP Vestgarden, JI (reprint author), Univ Oslo, Dept Phys, POB 1048, N-0316 Oslo, Norway. RI Bergli, Joakim/A-1707-2008 NR 32 TC 10 Z9 10 U1 1 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 1 AR 014514 DI 10.1103/PhysRevB.77.014514 PG 7 WC Physics, Condensed Matter SC Physics GA 258IS UT WOS:000252862200097 ER PT J AU Wang, X Spataru, CD Hybertsen, MS Millis, AJ AF Wang, X. Spataru, C. D. Hybertsen, M. S. Millis, A. J. TI Electronic correlation in nanoscale junctions: Comparison of the GW approximation to a numerically exact solution of the single-impurity Anderson model SO PHYSICAL REVIEW B LA English DT Article ID ORGANIC-MOLECULES; CONDUCTANCE; TRANSPORT; SYSTEMS; METALS; TRANSISTORS; LIMIT AB The impact of electronic correlation in nanoscale junctions, e.g., formed by single molecules, is analyzed using the single-impurity Anderson model. Numerically exact quantum Monte Carlo calculations are performed to map out the orbital filling, linear response conductance, and spectral function as a function of the Coulomb interaction strength and the impurity level position. These numerical results form a benchmark against which approximate but more broadly applicable approaches to include electronic correlation in transport can be compared. As an example, the self-consistent GW approximation has been implemented for the Anderson model and the results have been compared to this benchmark. For weak coupling or for level positions such that the impurity is either nearly empty or nearly full, the GW approximation is found to be accurate. However, for intermediate or strong coupling, the GW approximation does not properly represent the impact of spin or charge fluctuations. Neither the spectral function nor the linear response conductance is accurately given across the Coulomb blockade plateau and well into the mixed valence regimes. C1 [Wang, X.; Millis, A. J.] Columbia Univ, Dept Phys, New York, NY 10027 USA. [Spataru, C. D.] Columbia Univ, Ctr Electron Transport Mol Nanostruct, New York, NY 10027 USA. [Hybertsen, M. S.] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. RP Wang, X (reprint author), Columbia Univ, Dept Phys, New York, NY 10027 USA. RI Wang, Xin/F-5509-2011; OI Wang, Xin/0000-0003-2971-5088; Hybertsen, Mark S/0000-0003-3596-9754 NR 60 TC 45 Z9 45 U1 0 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 4 AR 045119 DI 10.1103/PhysRevB.77.045119 PG 10 WC Physics, Condensed Matter SC Physics GA 258JB UT WOS:000252863100038 ER PT J AU Wu, BA Zhang, Z AF Wu, Biao Zhang, Zhenyu TI Stability of metallic thin films studied with a free electron model SO PHYSICAL REVIEW B LA English DT Article ID QUANTUM-WELL STATES; GROWTH; HEIGHT; PB; SUPERCONDUCTIVITY; OVERLAYERS; INTERFACE; ISLANDS AB The stability of metallic thin films is studied with a free electron model, which is popularly known as the model of "particle in a box." A detailed theoretical framework is presented, along with discussion on typical metals, such as Pb, Al, Ag, Na, and Be. This simple model is found to be able to describe well the oscillation pattern of stability for continuous metallic films. In particular, it yields even-odd oscillations in the stability of Pb(111) film, consistent with both experimental observation and ab initio results. However, the free electron model is too crude to predict at what thickness a film is stable. Film stability is further examined with a model of "particle in a corrugated box," where a lattice potential is added along the vertical direction of a film. The effect of lattice potential is found not substantial. C1 [Wu, Biao] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China. [Zhang, Zhenyu] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA. [Zhang, Zhenyu] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. RP Wu, BA (reprint author), Chinese Acad Sci, Inst Phys, POB 603, Beijing 100080, Peoples R China. RI Wu, Biao/B-3329-2008 OI Wu, Biao/0000-0001-9229-5894 NR 38 TC 20 Z9 20 U1 0 U2 10 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 3 AR 035410 DI 10.1103/PhysRevB.77.035410 PG 12 WC Physics, Condensed Matter SC Physics GA 258IZ UT WOS:000252862900124 ER PT J AU Ye, H Chen, G Zhu, Y Wei, SH AF Ye, Honggang Chen, Guangde Zhu, Youzhang Wei, Su-Huai TI Asymmetry of adsorption of oxygen at wurtzite AlN (0001) and (000(1)over-bar) surfaces: First-principles calculations SO PHYSICAL REVIEW B LA English DT Article ID ALUMINUM NITRIDE; AB-INITIO; ALN; GAN AB First-principles calculations are performed to study the adsorption of oxygen at wurtzite AlN (0001) and (000 (1) over bar) surfaces as a function of oxygen coverage. We find that the adsorption of oxygen at the AlN (000 (1) over bar) surface has a larger binding energy than at the AlN (0001) surface. The hollow site (H3) is preferred for the (0001) surface, whereas the site directly above the Al sublayer and the H3 site are almost degenerate in energy for the (000 (1) over bar) surface. The trend of the adsorption energy as a function of the oxygen coverage for the AlN (0001) surface is similar to that of GaN, whereas for the AlN (000 (1) over bar) surface it is different from GaN. The asymmetry of the oxygen adsorption at the two surfaces is explained using the electron counting rule and the resulting surface electronic states. C1 [Ye, Honggang; Chen, Guangde; Zhu, Youzhang] Xian Jiaotong Univ, Dept Appl Phys, Xian 710049, Peoples R China. [Wei, Su-Huai] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Ye, H (reprint author), Xian Jiaotong Univ, Dept Appl Phys, Xian 710049, Peoples R China. RI Ye, Honggang/A-8035-2008; Chen, Guangde/D-4373-2011; chen, guangde/I-4260-2014 OI Ye, Honggang/0000-0002-5643-5914; NR 26 TC 16 Z9 16 U1 2 U2 20 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 3 AR 033302 DI 10.1103/PhysRevB.77.033302 PG 4 WC Physics, Condensed Matter SC Physics GA 258IZ UT WOS:000252862900011 ER PT J AU Zapf, VS Correa, VF Sengupta, P Batista, CD Tsukamoto, M Kawashima, N Egan, P Pantea, C Migliori, A Betts, JB Jaime, M Paduan-Filho, A AF Zapf, V. S. Correa, V. F. Sengupta, P. Batista, C. D. Tsukamoto, M. Kawashima, N. Egan, P. Pantea, C. Migliori, A. Betts, J. B. Jaime, M. Paduan-Filho, A. TI Direct measurement of spin correlations using magnetostriction SO PHYSICAL REVIEW B LA English DT Article ID TEMPERATURE-DEPENDENCE; PRESSURE-DEPENDENCE; CONSTANTS AB We demonstrate that the short-range spin correlator < S(i)center dot S(j)>, a fundamental measure of the interaction between adjacent spins, can be directly measured in certain insulating magnets. We present magnetostriction data for the insulating organic compound NiCl(2)-4SC(NH(2))(2), and show that the magnetostriction as a function of field is proportional to the dominant short-range spin correlator. Furthermore, the constant of proportionality between the magnetostriction and the spin correlator gives information about the spin-lattice interaction. Combining these results with the measured Young's modulus, we are able to extract dJ/dz, the dependence of the superexchange constant J on the Ni interionic distance z. C1 [Zapf, V. S.; Sengupta, P.; Egan, P.; Pantea, C.; Migliori, A.; Betts, J. B.; Jaime, M.] Los Alamos Natl Lab, NHMFL, Los Alamos, NM 87545 USA. [Correa, V. F.] NHMFL, Tallahassee, FL 32210 USA. [Sengupta, P.; Batista, C. D.] LANL, T 11 Condensed Matter & Thermal Phys, Los Alamos, NM 87545 USA. [Tsukamoto, M.; Kawashima, N.] Univ Tokyo, Inst Solid State Phys, Tokyo, Japan. [Egan, P.] Oklahoma State Univ, Stillwater, OK 74078 USA. [Paduan-Filho, A.] Univ Sao Paulo, Inst Fis, BR-01498 Sao Paulo, Brazil. RP Correa, VF (reprint author), Comis Nacl Energia Atom, Ctr Atom Bariloche, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina. RI Pantea, Cristian/D-4108-2009; PaduanFilho, Armando/H-2443-2011; Zapf, Vivien/K-5645-2013; Jaime, Marcelo/F-3791-2015; Sengupta, Pinaki/B-6999-2011; Batista, Cristian/J-8008-2016; OI Zapf, Vivien/0000-0002-8375-4515; Jaime, Marcelo/0000-0001-5360-5220; Pantea, Cristian/0000-0002-0805-8923 NR 21 TC 22 Z9 22 U1 3 U2 11 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 2 AR 020404 DI 10.1103/PhysRevB.77.020404 PG 4 WC Physics, Condensed Matter SC Physics GA 258IW UT WOS:000252862600006 ER PT J AU Zhang, QM An, M Yuan, SK Wu, Y Wu, D Luo, JL Wang, NL Bao, W Wang, YN AF Zhang, Qingming An, Ming Yuan, Shikui Wu, Yong Wu, Dong Luo, Jianlin Wang, Nanlin Bao, Wei Wang, Yening TI Phonon softening and forbidden mode in Na(0.5)CoO(2) observed by Raman scattering SO PHYSICAL REVIEW B LA English DT Article ID TEMPERATURE-DEPENDENCE; PHASE-TRANSITIONS; OPTICAL PHONONS; SEMICONDUCTORS; DIAMOND; NAXCOO2; COO2 AB Polarized Raman scattering measurements have been performed on Na(0.5)CoO(2) single crystal from 8 to 305 K. Both the A(1g) and E(1g) phonon modes show a softening below T(c1)approximate to 83 K. Additionally, the A(1g) phonon mode, which is forbidden in the scattering geometry of cross polarization for the triangular CoO(2) layers, appears below T(c1). In contrast, the metal-insulator transition at T(c2)approximate to 46 K has only secondary effect on the Raman spectra. The phonon softening and the "forbidden" Raman intensity follow closely magnetic order parameter and the gap function at the Fermi surface, indicating that the distortion of CoO(6) octahedra at T(c1), instead of the Na ordering at similar to 350 K, is the relevant structural component of the 83 K phase transition. C1 [Zhang, Qingming] Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China. [Zhang, Qingming; An, Ming; Yuan, Shikui; Wu, Yong; Wang, Yening] Nanjing Univ, Dept Phys, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China. [Wu, Dong; Luo, Jianlin; Wang, Nanlin] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100080, Peoples R China. [Bao, Wei] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Zhang, QM (reprint author), Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China. EM qmzhang@ruc.edu.cn RI Bao, Wei/E-9988-2011; 石, 源/D-5929-2012; ruc, phy/E-4170-2012 OI Bao, Wei/0000-0002-2105-461X; NR 35 TC 5 Z9 7 U1 0 U2 12 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 4 AR 045110 DI 10.1103/PhysRevB.77.045110 PG 5 WC Physics, Condensed Matter SC Physics GA 258JB UT WOS:000252863100029 ER PT J AU Zong, X Suh, BJ Niazi, A Yan, JQ Schlagel, DL Lograsso, TA Johnston, DC AF Zong, X. Suh, B. J. Niazi, A. Yan, J. Q. Schlagel, D. L. Lograsso, T. A. Johnston, D. C. TI (17)O and (51)V NMR for the zigzag spin-1 chain compound CaV(2)O(4) SO PHYSICAL REVIEW B LA English DT Article ID GAPLESS CHIRAL PHASE; S=1; LAVO3; STATE AB (51)V NMR studies on CaV(2)O(4) single crystals and (17)O NMR studies on (17)O-enriched powder samples are reported. The temperature dependences of the (17)O NMR linewidth and nuclear spin-lattice relaxation rate give strong evidence for a long-range antiferromagnetic transition at T(N)=78 K in the powder. Magnetic susceptibility measurements show that T(N)=69 K in the crystals. A zero-field (51)V NMR signal was observed at low temperatures (f approximate to 237 MHz at 4.2 K) in the crystals. The field-swept spectra with the field in different directions suggest the presence of two antiferromagnetic substructures. Each substructure is collinear, with the easy axes of the two substructures separated by an angle of 19(1)degrees, and with their average direction pointing approximately along the b axis of the crystal structure. The two spin substructures contain equal numbers of spins. The temperature dependence of the ordered moment, measured up to 45 K, shows the presence of an energy gap E(G) in the antiferromagnetic spin wave excitation spectrum. Antiferromagnetic spin wave theory suggests that E(G)/k(B) lies between 64 and 98 K. C1 [Zong, X.; Suh, B. J.; Niazi, A.; Yan, J. Q.; Schlagel, D. L.; Lograsso, T. A.; Johnston, D. C.] Ames Lab, Mat & Engn Phys Program, Ames, IA 50011 USA. [Zong, X.; Johnston, D. C.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. [Suh, B. J.] Catholic Univ Korea, Dept Phys, Puchon 420743, South Korea. RP Zong, X (reprint author), Ames Lab, Mat & Engn Phys Program, Ames, IA 50011 USA. EM bjsuh@catholic.ac.kr RI Zong, Xiaopeng/F-1529-2011 NR 20 TC 20 Z9 20 U1 0 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD JAN PY 2008 VL 77 IS 1 AR 014412 DI 10.1103/PhysRevB.77.014412 PG 10 WC Physics, Condensed Matter SC Physics GA 258IS UT WOS:000252862200054 ER PT J AU Adare, A Afanasiev, S Aidala, C Ajitanand, NN Akiba, Y Al-Bataineh, H Alexander, J Al-Jamel, A Aoki, K Aphecetche, L Armendariz, R Aronson, SH Asai, J Atomssa, ET Averbeck, R Awes, TC Azmoun, B Babintsev, V Baksay, G Baksay, L Baldisseri, A Barish, KN Barnes, PD Bassalleck, B Bathe, S Batsouli, S Baublis, V Bauer, F Bazilevsky, A Belikov, S Bennett, R Berdnikov, Y Bickley, AA Bjorndal, MT Boissevain, JG Borel, H Boyle, K Brooks, ML Brown, DS Bucher, D Buesching, H Bumazhnov, V Bunce, G Burward-Hoy, JM Butsyk, S Campbell, S Chai, JS Chang, BS Charvet, JL Chernichenko, S Chiba, J Chi, CY Chiu, M Choi, IJ Chujo, T Chung, P Churyn, A Cianciolo, V Cleven, CR Cobigo, Y Cole, BA Comets, MP Constantin, P Csanad, M Csoergo, T Dahms, T Das, K David, G Deaton, MB Dehmelt, K Delagrange, H Denisov, A d'Enterria, D Deshpande, A Desmond, EJ Dietzsch, O Dion, A Donadelli, M Drachenberg, JL Drapier, O Drees, A Dubey, AK Durum, A Dzhordzhadze, V Efremenko, YV Egdemir, J Ellinghaus, F Emam, WS Enokizono, A En'yo, H Espagnon, B Esumi, S Eyser, KO Fields, DE Finger, M Finger, M Fleuret, F Fokin, SL Forestier, B Fraenkel, Z Frantz, JE Franz, A Frawley, AD Fujiwara, K Fukao, Y Fung, SY Fusayasu, T Gadrat, S Garishvili, I Gastineau, F Germain, M Glenn, A Gong, H Gonin, M Gosset, J Goto, Y de Cassagnac, RG Grau, N Greene, SV Perdekamp, MG Gunji, T Gustafsson, HA Hachiya, T Hadj Henni, A Haegemann, C Haggerty, JS Hagiwara, MN Hamagaki, H Han, R Harada, H Hartouni, EP Haruna, K Harvey, M Haslum, E Hasuko, K Hayano, R Heffner, M Hemmick, TK Hester, T Heuser, JM He, X Hiejima, H Hill, JC Hobbs, R Hohlmann, M Holmes, M Holzmann, W Homma, K Hong, B Horaguchi, T Hornback, D Hur, MG Ichihara, T Imai, K Inaba, M Inoue, Y Isenhower, D Isenhower, L Ishihara, M Isobe, T Issah, M Isupov, A Jacak, BV Jia, J Jin, J Jinnouchi, O Johnson, BM Joo, KS Jouan, D Kajihara, F Kametani, S Kamihara, N Kamin, J Kaneta, M Kang, JH Kanou, H Kawagishi, T Kawall, D Kazantsev, AV Kelly, S Khanzadeev, A Kikuchi, J Kim, DH Kim, DJ Kim, E Kim, YS Kinney, E Kiss, A Kistenev, E Kiyomichi, A Klay, J Klein-Boesing, C Kochenda, L Kochetkov, V Komkov, B Konno, M Kotchetkov, D Kozlov, A Kral, A Kravitz, A Kroon, PJ Kubart, J Kunde, GJ Kurihara, N Kurita, K Kweon, MJ Kwon, Y Kyle, GS Lacey, R Lai, YS Lajoie, JG Lebedev, A Le Bornec, Y Leckey, S Lee, DM Lee, MK Lee, T Leitch, MJ Leite, MAL Lenzi, B Lim, H Liska, T Litvinenko, A Liu, MX Li, X Li, XH Love, B Lynch, D Maguire, CF Makdisi, YI Malakhov, A Malik, MD Manko, VI Mao, Y Masek, L Masui, H Matathias, F McCain, MC McCumber, M McGaughey, PL Miake, Y Mikes, P Miki, K Miller, TE Milov, A Mioduszewski, S Mishra, GC Mishra, M Mitchell, JT Mitrovski, M Morreale, A Morrison, DP Moss, JM Moukhanova, TV Mukhopadhyay, D Murata, J Nagamiya, S Nagata, Y Nagle, JL Naglis, M Nakagawa, I Nakamiya, Y Nakamura, T Nakano, K Newby, J Nguyen, M Norman, BE Nyanin, AS Nystrand, J O'Brien, E Oda, SX Ogilvie, CA Ohnishi, H Ojha, ID Okada, H Okada, K Oka, M Omiwade, OO Oskarsson, A Otterlund, I Ouchida, M Ozawa, K Pak, R Pal, D Palounek, APT Pantuev, V Papavassiliou, V Park, J Park, WJ Pate, SF Pei, H Peng, JC Pereira, H Peresedov, V Peressounko, DY Pinkenburg, C Pisani, RP Purschke, ML Purwar, AK Qu, H Rak, J Rakotozafindrabe, A Ravinovich, I Read, KF Rembeczki, S Reuter, M Reygers, K Riabov, V Riabov, Y Roche, G Romana, A Rosati, M Rosendahl, SSE Rosnet, P Rukoyatkin, P Rykov, VL Ryu, SS Sahlmueller, B Saito, N Sakaguchi, T Sakai, S Sakata, H Samsonov, V Sato, HD Sato, S Sawada, S Seele, J Seidl, R Semenov, V Seto, R Sharma, D Shea, TK Shein, I Shevel, A Shibata, TA Shigaki, K Shimomura, M Shohjoh, T Shoji, K Sickles, A Silva, CL Silvermyr, D Silvestre, C Sim, KS Singh, CP Singh, V Skutnik, S Slunecka, M Smith, WC Soldatov, A Soltz, RA Sondheim, WE Sorensen, SP Sourikova, IV Staley, F Stankus, PW Stenlund, E Stepanov, M Ster, A Stoll, SP Sugitate, T Suire, C Sullivan, JP Sziklai, J Tabaru, T Takagi, S Takagui, EM Taketani, A Tanaka, H Tanaka, Y Tanida, K Tannenbaum, MJ Taranenko, A Tarjan, P Thomas, TL Togawa, M Toia, A Tojo, J Tomasek, L Torii, H Towell, RS Tram, VN Tserruya, I Tsuchimoto, Y Tuli, SK Tydesjo, H Tyurin, N Vale, C Valle, H van Hecke, HW Velkovska, J Vertesi, R Vinogradov, AA Virius, M Vrba, V Vznuzdaev, E Wagner, M Walker, D Wang, XR Watanabe, Y Wessels, J White, SN Willis, N Winter, D Woody, CL Wysocki, M Xie, W Yamaguchi, YL Yanovich, A Yasin, Z Ying, J Yokkaichi, S Young, GR Younus, I Yushmanov, IE Zajc, WA Zaudtke, O Zhang, C Zhou, S Zimanyi, J Zolin, L AF Adare, A. Afanasiev, S. Aidala, C. Ajitanand, N. N. Akiba, Y. Al-Bataineh, H. Alexander, J. Al-Jamel, A. Aoki, K. Aphecetche, L. Armendariz, R. Aronson, S. H. Asai, J. Atomssa, E. T. Averbeck, R. Awes, T. C. Azmoun, B. Babintsev, V. Baksay, G. Baksay, L. Baldisseri, A. Barish, K. N. Barnes, P. D. Bassalleck, B. Bathe, S. Batsouli, S. Baublis, V. Bauer, F. Bazilevsky, A. Belikov, S. Bennett, R. Berdnikov, Y. Bickley, A. A. Bjorndal, M. T. Boissevain, J. G. Borel, H. Boyle, K. Brooks, M. L. Brown, D. S. Bucher, D. Buesching, H. Bumazhnov, V. Bunce, G. Burward-Hoy, J. M. Butsyk, S. Campbell, S. Chai, J. -S. Chang, B. S. Charvet, J. -L. Chernichenko, S. Chiba, J. Chi, C. Y. Chiu, M. Choi, I. J. Chujo, T. Chung, P. Churyn, A. Cianciolo, V. Cleven, C. R. Cobigo, Y. Cole, B. A. Comets, M. P. Constantin, P. Csanad, M. Csoergo, T. Dahms, T. Das, K. David, G. Deaton, M. B. Dehmelt, K. Delagrange, H. Denisov, A. d'Enterria, D. Deshpande, A. Desmond, E. J. Dietzsch, O. Dion, A. Donadelli, M. Drachenberg, J. L. Drapier, O. Drees, A. Dubey, A. K. Durum, A. Dzhordzhadze, V. Efremenko, Y. V. Egdemir, J. Ellinghaus, F. Emam, W. S. Enokizono, A. En'yo, H. Espagnon, B. Esumi, S. Eyser, K. O. Fields, D. E. Finger, M. Finger, M., Jr. Fleuret, F. Fokin, S. L. Forestier, B. Fraenkel, Z. Frantz, J. E. Franz, A. Frawley, A. D. Fujiwara, K. Fukao, Y. Fung, S. -Y. Fusayasu, T. Gadrat, S. Garishvili, I. Gastineau, F. Germain, M. Glenn, A. Gong, H. Gonin, M. Gosset, J. Goto, Y. de Cassagnac, R. Granier Grau, N. Greene, S. V. Perdekamp, M. Grosse Gunji, T. Gustafsson, H. -A. Hachiya, T. Hadj Henni, A. Haegemann, C. Haggerty, J. S. Hagiwara, M. N. Hamagaki, H. Han, R. Harada, H. Hartouni, E. P. Haruna, K. Harvey, M. Haslum, E. Hasuko, K. Hayano, R. Heffner, M. Hemmick, T. K. Hester, T. Heuser, J. M. He, X. Hiejima, H. Hill, J. C. Hobbs, R. Hohlmann, M. Holmes, M. Holzmann, W. Homma, K. Hong, B. Horaguchi, T. Hornback, D. Hur, M. G. Ichihara, T. Imai, K. Inaba, M. Inoue, Y. Isenhower, D. Isenhower, L. Ishihara, M. Isobe, T. Issah, M. Isupov, A. Jacak, B. V. Jia, J. Jin, J. Jinnouchi, O. Johnson, B. M. Joo, K. S. Jouan, D. Kajihara, F. Kametani, S. Kamihara, N. Kamin, J. Kaneta, M. Kang, J. H. Kanou, H. Kawagishi, T. Kawall, D. Kazantsev, A. V. Kelly, S. Khanzadeev, A. Kikuchi, J. Kim, D. H. Kim, D. J. Kim, E. Kim, Y. -S. Kinney, E. Kiss, A. Kistenev, E. Kiyomichi, A. Klay, J. Klein-Boesing, C. Kochenda, L. Kochetkov, V. Komkov, B. Konno, M. Kotchetkov, D. Kozlov, A. Kral, A. Kravitz, A. Kroon, P. J. Kubart, J. Kunde, G. J. Kurihara, N. Kurita, K. Kweon, M. J. Kwon, Y. Kyle, G. S. Lacey, R. Lai, Y. -S. Lajoie, J. G. Lebedev, A. Le Bornec, Y. Leckey, S. Lee, D. M. Lee, M. K. Lee, T. Leitch, M. J. Leite, M. A. L. Lenzi, B. Lim, H. Liska, T. Litvinenko, A. Liu, M. X. Li, X. Li, X. H. Love, B. Lynch, D. Maguire, C. F. Makdisi, Y. I. Malakhov, A. Malik, M. D. Manko, V. I. Mao, Y. Masek, L. Masui, H. Matathias, F. McCain, M. C. McCumber, M. McGaughey, P. L. Miake, Y. Mikes, P. Miki, K. Miller, T. E. Milov, A. Mioduszewski, S. Mishra, G. C. Mishra, M. Mitchell, J. T. Mitrovski, M. Morreale, A. Morrison, D. P. Moss, J. M. Moukhanova, T. V. Mukhopadhyay, D. Murata, J. Nagamiya, S. Nagata, Y. Nagle, J. L. Naglis, M. Nakagawa, I. Nakamiya, Y. Nakamura, T. Nakano, K. Newby, J. Nguyen, M. Norman, B. E. Nyanin, A. S. Nystrand, J. O'Brien, E. Oda, S. X. Ogilvie, C. A. Ohnishi, H. Ojha, I. D. Okada, H. Okada, K. Oka, M. Omiwade, O. O. Oskarsson, A. Otterlund, I. Ouchida, M. Ozawa, K. Pak, R. Pal, D. Palounek, A. P. T. Pantuev, V. Papavassiliou, V. Park, J. Park, W. J. Pate, S. F. Pei, H. Peng, J. -C. Pereira, H. Peresedov, V. Peressounko, D. Yu. Pinkenburg, C. Pisani, R. P. Purschke, M. L. Purwar, A. K. Qu, H. Rak, J. Rakotozafindrabe, A. Ravinovich, I. Read, K. F. Rembeczki, S. Reuter, M. Reygers, K. Riabov, V. Riabov, Y. Roche, G. Romana, A. Rosati, M. Rosendahl, S. S. E. Rosnet, P. Rukoyatkin, P. Rykov, V. L. Ryu, S. S. Sahlmueller, B. Saito, N. Sakaguchi, T. Sakai, S. Sakata, H. Samsonov, V. Sato, H. D. Sato, S. Sawada, S. Seele, J. Seidl, R. Semenov, V. Seto, R. Sharma, D. Shea, T. K. Shein, I. Shevel, A. Shibata, T. -A. Shigaki, K. Shimomura, M. Shohjoh, T. Shoji, K. Sickles, A. Silva, C. L. Silvermyr, D. Silvestre, C. Sim, K. S. Singh, C. P. Singh, V. Skutnik, S. Slunecka, M. Smith, W. C. Soldatov, A. Soltz, R. A. Sondheim, W. E. Sorensen, S. P. Sourikova, I. V. Staley, F. Stankus, P. W. Stenlund, E. Stepanov, M. Ster, A. Stoll, S. P. Sugitate, T. Suire, C. Sullivan, J. P. Sziklai, J. Tabaru, T. Takagi, S. Takagui, E. M. Taketani, A. Tanaka, H. Tanaka, Y. Tanida, K. Tannenbaum, M. J. Taranenko, A. Tarjan, P. Thomas, T. L. Togawa, M. Toia, A. Tojo, J. Tomasek, L. Torii, H. Towell, R. S. Tram, V. -N. Tserruya, I. Tsuchimoto, Y. Tuli, S. K. Tydesjo, H. Tyurin, N. Vale, C. Valle, H. van Hecke, H. W. Velkovska, J. Vertesi, R. Vinogradov, A. A. Virius, M. Vrba, V. Vznuzdaev, E. Wagner, M. Walker, D. Wang, X. R. Watanabe, Y. Wessels, J. White, S. N. Willis, N. Winter, D. Woody, C. L. Wysocki, M. Xie, W. Yamaguchi, Y. L. Yanovich, A. Yasin, Z. Ying, J. Yokkaichi, S. Young, G. R. Younus, I. Yushmanov, I. E. Zajc, W. A. Zaudtke, O. Zhang, C. Zhou, S. Zimanyi, J. Zolin, L. CA PHENIX Collaborat TI Transverse momentum and centrality dependence of dihadron correlations in Au plus Au collisions at root s(NN)=200 GeV: Jet quenching and the response of partonic matter SO PHYSICAL REVIEW C LA English DT Article ID RADIATION AB Azimuthal angle (Delta phi) correlations are presented for charged hadrons from dijets for 0.4 < p(T)< 10 GeV/c in Au+Au collisions at root s(NN)=200 GeV. With increasing p(T), the away-side distribution evolves from a broad and relatively flat shape to a concave shape, then to a convex shape. Comparisons to p+p data suggest that the away-side can be divided into a partially suppressed "head" region centered at Delta phi similar to pi and an enhanced "shoulder" region centered at Delta phi similar to pi +/- 1.1. The p(T) spectrum for the head region softens toward central collisions, consistent with the onset of jet quenching. The spectral slope for the shoulder region is independent of centrality and trigger p(T), which offers constraints on energy transport mechanisms and suggests that it contains the medium response to energetic jets. C1 [Adare, A.; Hagiwara, M. N.; Isenhower, D.; Isenhower, L.; Omiwade, O. O.; Smith, W. C.; Towell, R. S.] Abilene Christian Univ, Abilene, TX 79699 USA. [Singh, C. P.; Singh, V.; Tuli, S. K.] Banaras Hindu Univ, Dept Phys, Varanasi 221005, Uttar Pradesh, India. [Azmoun, B.; Bazilevsky, A.; Belikov, S.; Buesching, H.; Bunce, G.; David, G.; Desmond, E. J.; Frantz, J. E.; Haggerty, J. S.; Harvey, M.; Johnson, B. M.; Kistenev, E.; Kroon, P. J.; Makdisi, Y. I.; Mioduszewski, S.; Morrison, D. P.; O'Brien, E.; Pak, R.; Pinkenburg, C.; Purschke, M. L.; Sato, S.; Shea, T. K.; Sourikova, I. V.; Stoll, S. P.; Tannenbaum, M. J.; White, S. N.; Woody, C. L.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Bathe, S.; Bauer, F.; Emam, W. S.; Fung, S. -Y.; Hester, T.; Kotchetkov, D.; Li, X. H.; Morreale, A.; Seto, R.; Xie, W.] Univ Calif Riverside, Riverside, CA 92521 USA. [Finger, M.; Finger, M., Jr.; Kubart, J.; Masek, L.] Charles Univ Prague, CR-11636 Prague 1, Czech Republic. [Li, X.; Zhou, S.] China Inst Atom Energy, Beijing, Peoples R China. [Gunji, T.; Hamagaki, H.; Hayano, R.; Isobe, T.; Kajihara, F.; Kametani, S.; Kurihara, N.; Oda, S. X.] Univ Tokyo, Grad Sch Sci, Ctr Nucl Stdy, Tokyo 1130033, Japan. [Adare, A.; Bickley, A. A.; Ellinghaus, F.; Glenn, A.; Kelly, S.; Kinney, E.; Nagle, J. L.; Seele, J.; Wysocki, M.] Univ Colorado, Boulder, CO 80309 USA. [Aidala, C.; Batsouli, S.; Bjorndal, M. T.; Chi, C. Y.; Chiu, M.; Cole, B. A.; d'Enterria, D.; Frantz, J. E.; Jia, J.; Jin, J.; Kravitz, A.; Lai, Y. -S.; Matathias, F.; Winter, D.; Zajc, W. A.; Zhang, C.] Nevis Labs, Irvington, NY 10533 USA. [Aidala, C.; Batsouli, S.; Bjorndal, M. T.; Chi, C. Y.; Chiu, M.; Cole, B. A.; d'Enterria, D.; Frantz, J. E.; Jia, J.; Jin, J.; Kravitz, A.; Lai, Y. -S.; Matathias, F.; Winter, D.; Zajc, W. A.; Zhang, C.] Columbia Univ, New York, NY 10027 USA. [Kral, A.; Liska, T.; Virius, M.] Czech Tech Univ, CR-16636 Prague, Czech Republic. [Baldisseri, A.; Borel, H.; Charvet, J. -L.; Cobigo, Y.; Pereira, H.; Silvestre, C.; Staley, F.] CEA Saclay, Dapnia, F-91191 Gif Sur Yvette, France. [Tarjan, P.; Vertesi, R.] Univ Debrecen, H-4010 Debrecen, Hungary. [Csanad, M.; Kiss, A.] Eotvos Lorand Univ, ELTE, H-1117 Budapest, Hungary. [Baksay, G.; Baksay, L.; Dehmelt, K.; Hohlmann, M.; Rembeczki, S.] Florida Inst Technol, Melbourne, FL 32901 USA. [Das, K.] Florida State Univ, Tallahassee, FL 32306 USA. [Cleven, C. R.; He, X.; Mishra, G. C.; Qu, H.; Ying, J.] Georgia State Univ, Atlanta, GA 30303 USA. [Enokizono, A.; Hachiya, T.; Harada, H.; Haruna, K.; Homma, K.; Nakamiya, Y.; Nakamura, T.; Ouchida, M.; Sakata, H.; Shigaki, K.; Sugitate, T.; Tsuchimoto, Y.] Hiroshima Univ, Higashihiroshima 7398526, Japan. [Babintsev, V.; Bumazhnov, V.; Chernichenko, S.; Churyn, A.; Denisov, A.; Durum, A.; Kochetkov, V.; Semenov, V.; Soldatov, A.; Tyurin, N.; Yanovich, A.] Inst High Energy Phys, State Res Ctr Russian Fed, IHEP Protvino, RU-142281 Protvino, Russia. [Chiu, M.; Perdekamp, M. Grosse; Hiejima, H.; McCain, M. C.; Peng, J. -C.] Univ Illinois, Urbana, IL 61801 USA. [Masek, L.; Mikes, P.; Tomasek, L.; Vrba, V.] Acad Sci Czech Republic, Inst Phys, Prague 8, Czech Republic. [Belikov, S.; Constantin, P.; Grau, N.; Hill, J. C.; Lajoie, J. G.; Lebedev, A.; Ogilvie, C. A.; Rak, J.; Rosati, M.; Skutnik, S.; Vale, C.] Iowa State Univ, Ames, IA 50011 USA. [Afanasiev, S.; Finger, M.; Finger, M., Jr.; Litvinenko, A.; Malakhov, A.; Slunecka, M.; Zolin, L.] Joint Inst Nucl Res, RU-141980 Dubna, Russia. [Chai, J. -S.; Hur, M. G.; Kim, Y. -S.; Manko, V. I.] KAERI, Cyclotron Appl Lab, Seoul, South Korea. [Chiba, J.; Sato, S.; Tanaka, H.] High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki 3050801, Japan. [Csoergo, T.; Sziklai, J.; Zimanyi, J.] Hungarian Acad Sci, KFKI Res Inst Particle & Nucl Phys, H-1525 Budapest, Hungary. [Hong, B.; Kweon, M. J.; Park, W. J.; Sim, K. S.] Korea Univ, Seoul 136701, South Korea. [Fokin, S. L.; Kazantsev, A. V.; Manko, V. I.; Moukhanova, T. V.; Nyanin, A. S.; Peressounko, D. Yu.; Vinogradov, A. A.; Yushmanov, I. E.] Kurchatov Inst, Russian Res Ctr, Moscow, Russia. [Aoki, K.; Fukao, Y.; Imai, K.; Okada, H.; Saito, N.; Sato, H. D.; Shoji, K.; Togawa, M.; Wagner, M.] Kyoto Univ, Kyoto 6068502, Japan. [Atomssa, E. 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[Chujo, T.; Greene, S. V.; Holmes, M.; Love, B.; Miller, T. E.; Ojha, I. D.; Pal, D.; Velkovska, J.] Vanderbilt Univ, Nashville, TN 37235 USA. [Kametani, S.; Kikuchi, J.; Yamaguchi, Y. L.] Waseda Univ, Adv Res Inst Sci & Engn, Tokyo 1620044, Japan. [Dubey, A. K.; Fraenkel, Z.; Kozlov, A.; Ravinovich, I.; Tserruya, I.] Weizmann Inst Sci, IL-76100 Rehovot, Israel. [Chang, B. S.; Choi, I. J.; Kang, J. H.; Kim, D. J.; Kwon, Y.; Lee, M. K.] Yonsei Univ, IPAP, Seoul 120749, South Korea. RP Adare, A (reprint author), Abilene Christian Univ, Abilene, TX 79699 USA. RI seto, richard/G-8467-2011; Csanad, Mate/D-5960-2012; YANG, BOGEUM/I-8251-2012; Tomasek, Lukas/G-6370-2014; En'yo, Hideto/B-2440-2015; Hayano, Ryugo/F-7889-2012; HAMAGAKI, HIDEKI/G-4899-2014; Durum, Artur/C-3027-2014; Sorensen, Soren /K-1195-2016; Yokkaichi, Satoshi/C-6215-2017; Taketani, Atsushi/E-1803-2017; Semenov, Vitaliy/E-9584-2017 OI Tomasek, Lukas/0000-0002-5224-1936; Hayano, Ryugo/0000-0002-1214-7806; Sorensen, Soren /0000-0002-5595-5643; Taketani, Atsushi/0000-0002-4776-2315; NR 25 TC 51 Z9 51 U1 5 U2 8 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 EI 1089-490X J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2008 VL 77 IS 1 AR 011901 DI 10.1103/PhysRevC.77.011901 PG 6 WC Physics, Nuclear SC Physics GA 258JG UT WOS:000252863600003 ER PT J AU Adler, SS Afanasiev, S Aidala, C Ajitanand, NN Akiba, Y Al-Jamel, A Alexander, J Aoki, K Aphecetche, L Armendariz, R Aronson, SH Averbeck, R Awes, TC Babintsev, V Baldisseri, A Barish, KN Barnes, PD Bassalleck, B Bathe, S Batsouli, S Baublis, V Bauer, F Bazilevsky, A Belikov, S Bjorndal, MT Boissevain, JG Borel, H Brooks, ML Brown, DS Bruner, N Bucher, D Buesching, H Bumazhnov, V Bunce, G Burward-IIoy, JM Butsyk, S Camard, X Chand, P Chang, WC Chernichenko, S Chi, CY Chiba, J Chiu, M Choi, IJ Choudhury, RK Chujo, T Cianciolo, V Citron, Z Cobigo, Y Cole, BA Comets, MP Constantin, P Csanad, M Csorgo, T Cussonneau, JP d'Enterria, D Das, K David, G Deak, F Delagrange, H Denisov, A Deshpande, A Desmond, EJ Devismes, A Dietzsch, O Drachenberg, JL Drapier, O Drees, A Durum, A Dutta, D Dzhordzhadze, V Efremenko, YV En'yo, H Espagnon, B Esumi, S Fields, DE Finck, C Fleuret, F Fokin, SL Fox, BD Fraenkel, Z Frantz, JE Franz, A Frawley, AD Fukao, Y Fung, SY Gadrat, S Germain, M Glenn, A Gonin, M Gosset, J Goto, Y de Cassagnac, RG Grau, N Greene, SV Perdekamp, MG Gustafsson, HA Hachiya, T Haggerty, JS Hamagaki, H Hansen, AG Hartouni, EP Harvey, M Hasuko, K Hayano, R He, X Heffner, M Hemmick, TK Heuser, JM Hidas, P Hiejima, H Hill, JC Hobbs, R Holzmann, W Homma, K Hong, B Hoover, A Horaguchi, T Ichihara, T Ikonnikov, VV Imai, K Inaba, M Inuzuka, M Isenhower, D Isenhower, L Ishihara, M Issah, M Isupov, A Jacak, BV Jia, J Jinnouchi, O Johnson, BM Johnson, SC Joo, KS Jouan, D Kajihara, F Kametani, S Kamihara, N Kaneta, M Kang, JH Katou, K Kawabata, T Kazantsev, AV Kelly, S Khachaturov, B Khanzadeev, A Kikuchi, J Kim, DJ Kim, E Kim, GB Kim, HJ Kinney, E Kiss, A Kistenev, E Kiyomichi, A Klein-Boesing, C Kobayashi, H Kochenda, L Kochetkov, V Kohara, R Komkov, B Konno, M Kotchetkov, D Kozlov, A Kroon, PJ Kuberg, CH Kunde, GJ Kurita, K Kweon, MJ Kwon, Y Kyle, GS Lacey, R Lajoie, JG Le Bornec, Y Lebedev, A Leckey, S Lee, DM Leitch, MJ Leite, MAL Li, XH Lim, H Litvinenko, A Liu, MX Maguire, CF Makdisi, YI Malakhov, A Manko, VI Mao, Y Martinez, G Masui, H Matathias, F Matsumoto, T McCain, MC McGaughey, PL Miake, Y Miller, TE Milov, A Mioduszewski, S Mishra, GC Mitchell, JT Mohanty, AK Morrison, DP Moss, JM Mukhopadhyay, D Muniruzzaman, M Nagamiya, S Nagle, JL Nakamura, T Newby, J Nyanin, AS Nystrand, J O'Brien, E Ogilvie, CA Ohnishi, H Ojha, ID Okada, H Okada, K Oskarsson, A Otterlund, I Oyama, K Ozawa, K Pal, D Palounek, APT Pantuev, V Papavassiliou, V Park, J Park, WJ Pate, SF Pei, H Penev, V Peng, JC Pereira, H Peresedov, V Pierson, A Pinkenburg, C Pisani, RP Purschke, ML Purwar, AK Qualls, JM Rak, J Ravinovich, I Read, KF Reuter, M Reygers, K Riabov, V Riabov, Y Roche, G Romana, A Rosati, M Rosendahl, SSE Rosnet, P Rykov, VL Ryu, SS Saito, N Sakaguchi, T Sakai, S Samsonov, V Sanfratello, L Santo, R Sato, HD Sato, S Sawada, S Schutz, Y Semenov, V Seto, R Shea, TK Shein, I Shibata, TA Shigaki, K Shimomura, M Sickles, A Silva, CL Silvermyr, D Sim, KS Soldatov, A Soltz, RA Sondheim, WE Sorensen, SP Sourikova, IV Staley, F Stankus, PW Stenlund, E Stepanov, M Ster, A Stoll, SP Sugitate, T Sullivan, JP Takagi, S Takagui, EM Taketani, A Tanaka, KH Tanaka, Y Tanida, K Tannenbaum, MJ Taranenko, A Tarjan, P Thomas, TL Togawa, M Tojo, J Torii, H Towell, RS Tram, VN Tserruya, I Tsuchimoto, Y Tydesjo, H Tyurin, N Uam, TJ Velkovska, J Velkovsky, M Veszpremi, V Vinogradov, AA Volkov, MA Vznuzdaev, E Wang, XR Watanabe, Y White, SN Willis, N Wohn, FK Woody, CL Xie, W Yanovich, A Yokkaichi, S Young, GR Yushmanov, IE Zajc, WA Zhang, C Zhou, S Zimanyi, J Zolin, L Zong, X Vanhecke, HW AF Adler, S. S. Afanasiev, S. Aidala, C. Ajitanand, N. N. Akiba, Y. Al-Jamel, A. Alexander, J. Aoki, K. Aphecetche, L. Armendariz, R. Aronson, S. H. Averbeck, R. Awes, T. C. Babintsev, V. Baldisseri, A. Barish, K. N. Barnes, P. D. Bassalleck, B. Bathe, S. Batsouli, S. Baublis, V. Bauer, F. Bazilevsky, A. Belikov, S. Bjorndal, M. T. Boissevain, J. G. Borel, H. Brooks, M. L. Brown, D. S. Bruner, N. Bucher, D. Buesching, H. Bumazhnov, V. Bunce, G. Burward-IIoy, J. M. Butsyk, S. Camard, X. Chand, P. Chang, W. C. Chernichenko, S. Chi, C. Y. Chiba, J. Chiu, M. Choi, I. J. Choudhury, R. K. Chujo, T. Cianciolo, V. Citron, Z. Cobigo, Y. Cole, B. A. Comets, M. P. Constantin, P. Csanad, M. Csorgo, T. Cussonneau, J. P. d'Enterria, D. Das, K. David, G. Deak, F. Delagrange, H. Denisov, A. Deshpande, A. Desmond, E. J. Devismes, A. Dietzsch, O. Drachenberg, J. L. Drapier, O. Drees, A. Durum, A. Dutta, D. Dzhordzhadze, V. Efremenko, Y. V. En'yo, H. Espagnon, B. Esumi, S. Fields, D. E. Finck, C. Fleuret, F. 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P. Purschke, M. L. Purwar, A. K. Qualls, J. M. Rak, J. Ravinovich, I. Read, K. F. Reuter, M. Reygers, K. Riabov, V. Riabov, Y. Roche, G. Romana, A. Rosati, M. Rosendahl, S. S. E. Rosnet, P. Rykov, V. L. Ryu, S. S. Saito, N. Sakaguchi, T. Sakai, S. Samsonov, V. Sanfratello, L. Santo, R. Sato, H. D. Sato, S. Sawada, S. Schutz, Y. Semenov, V. Seto, R. Shea, T. K. Shein, I. Shibata, T. -A. Shigaki, K. Shimomura, M. Sickles, A. Silva, C. L. Silvermyr, D. Sim, K. S. Soldatov, A. Soltz, R. A. Sondheim, W. E. Sorensen, S. P. Sourikova, I. V. Staley, F. Stankus, P. W. Stenlund, E. Stepanov, M. Ster, A. Stoll, S. P. Sugitate, T. Sullivan, J. P. Takagi, S. Takagui, E. M. Taketani, A. Tanaka, K. H. Tanaka, Y. Tanida, K. Tannenbaum, M. J. Taranenko, A. Tarjan, P. Thomas, T. L. Togawa, M. Tojo, J. Torii, H. Towell, R. S. Tram, V. -N. Tserruya, I. Tsuchimoto, Y. Tydesjo, H. Tyurin, N. Uam, T. J. Velkovska, J. Velkovsky, M. Veszpremi, V. Vinogradov, A. A. Volkov, M. A. Vznuzdaev, E. Wang, X. R. Watanabe, Y. White, S. N. Willis, N. Wohn, F. K. Woody, C. L. Xie, W. Yanovich, A. Yokkaichi, S. Young, G. R. Yushmanov, I. E. Zajc, W. A. Zhang, C. Zhou, S. Zimanyi, J. Zolin, L. Zong, X. vanHecke, H. W. CA Phenix Collaboration TI Centrality dependence of charged hadron production in deuteron plus gold and nucleon plus gold collisions at root S-NN=200 GeV SO PHYSICAL REVIEW C LA English DT Article ID LARGE TRANSVERSE-MOMENTUM; PHENIX; SPECTRA AB We present transverse momentum (p(T)) spectra of charged hadrons measured in deuteron-gold and nucleon-gold collisions at root s(NN)=200 GeV for four centrality classes. Nucleon-gold collisions were selected by tagging events in which a spectator nucleon was observed in one of two forward rapidity detectors. The spectra and yields were investigated as a function of the number of binary nucleon-nucleon collisions, nu, suffered by deuteron nucleons. A comparison of charged particle yields to those in p+p collisions show that yield per nucleon-nucleon collision saturates with nu for high momentum particles. We also present the charged hadron to neutral pion ratios as a function of p(T). C1 [Chang, W. C.] Acad Sinica, Inst Phys, Taipei 11529, Taiwan. [Ojha, I. D.] Banaras Hindu Univ, Dept Phys, Varanasi 221005, Uttar Pradesh, India. [Chand, P.; Choudhury, R. K.; Dutta, D.; Mohanty, A. K.] Bhabha Atom Res Ctr, Bombay 400085, Maharashtra, India. [Adler, S. S.; Aronson, S. H.; Bazilevsky, A.; Buesching, H.; Bunce, G.; Chujo, T.; David, G.; Desmond, E. J.; Franz, A.; Haggerty, J. S.; Harvey, M.; Johnson, B. M.; Kistenev, E.; Kroon, P. J.; Makdisi, Y. I.; Mioduszewski, S.; Mitchell, J. T.; Morrison, D. P.; O'Brien, E.; Pinkenburg, C.; Pisani, R. P.; Purschke, M. L.; Sato, S.; Shea, T. K.; Sourikova, I. V.; Stoll, S. P.; Velkovska, J.; White, S. N.; Woody, C. L.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Barish, K. N.; Bathe, S.; Bauer, F.; Fung, S. -Y.; Kotchetkov, D.; Li, X. H.; Muniruzzaman, M.; Seto, R.; Xie, W.] Univ Calif Riverside, Riverside, CA 92521 USA. [Zhou, S.] China Inst Atom Engergy, Beijing, Peoples R China. [Hamagaki, H.; Hayano, R.; Inuzuka, M.; Kajihara, F.; Kametani, S.; Kawabata, T.; Matsumoto, T.; Oyama, K.; Ozawa, K.; Sakaguchi, T.] Univ Tokyo, Grad Sch Sci, Ctr Nucl Study, Tokyo 1130033, Japan. [Kinney, E.; Nagle, J. L.] Univ Colorado, Boulder, CO 80309 USA. [Batsouli, S.; Bjorndal, M. T.; Chi, C. Y.; Chiu, M.; Cole, B. A.; d'Enterria, D.; Frantz, J. E.; Kelly, S.; Nagle, J. L.; Zajc, W. A.; Zhang, C.] Columbia Univ, New York, NY 10027 USA. [Batsouli, S.; Bjorndal, M. T.; Chi, C. Y.; Chiu, M.; Cole, B. A.; d'Enterria, D.; Frantz, J. E.; Kelly, S.; Nagle, J. L.; Zajc, W. A.; Zhang, C.] Nevis Labs, Irvington, NY 10533 USA. [Baldisseri, A.; Borel, H.; Cobigo, Y.; Gosset, J.; Pereira, H.; Staley, F.] CEA Saclay, Dapnia, F-91191 Gif Sur Yvette, France. [Tarjan, P.; Veszpremi, V.] Univ Debrecen, H-4010 Debrecen, Hungary. [Csanad, M.; Deak, F.; Kiss, A.] Eotvos Lorand Univ, ELTE, H-1117 Budapest, Hungary. [Das, K.; Frawley, A. D.] Florida State Univ, Tallahassee, FL 32306 USA. [He, X.; Mishra, G. C.; Wang, X. R.] Georgia State Univ, Atlanta, GA 30303 USA. [Hachiya, T.; Homma, K.; Kohara, R.; Nakamura, T.; Shigaki, K.; Sugitate, T.; Tsuchimoto, Y.] Hiroshima Univ, Higashihiroshima 7398526, Japan. [Babintsev, V.; Belikov, S.; Bumazhnov, V.; Denisov, A.; Durum, A.; Semenov, V.; Shein, I.; Soldatov, A.; Tyurin, N.; Yanovich, A.] State Res Ctr Russian Federat, Inst High Energy Phys, IHEP Protvino, RU-142281 Protvino, Russia. [Kochetkov, V.; Peng, J. -C.] Univ Illinois, Urbana, IL 61801 USA. [Constantin, P.; Perdekamp, M. Grosse; Hiejima, H.; Lebedev, A.; Ogilvie, C. A.; Pei, H.; Rak, J.; Rosati, M.; Wohn, F. K.; Zong, X.] Iowa State Univ, Ames, IA 50011 USA. [Afanasiev, S.; Al-Jamel, A.; Grau, N.; Hill, J. C.; Isupov, A.; Lajoie, J. G.; Litvinenko, A.; Malakhov, A.; Penev, V.; Peresedov, V.; Zolin, L.] Joint Inst Nucl Res, RU-141980 Dubna, Moscow Region, Russia. [Akiba, Y.; Nagamiya, S.; Sawada, S.; Tanaka, K. H.] High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki 3050801, Japan. [Csorgo, T.; Hidas, P.; Ster, A.; Zimanyi, J.] Hungarian Acad Sci, KFKI Res Inst Particle & Nucl Phys, MTA KFKI RAMKI, H-1525 Budapest 114, Hungary. [Hong, B.; Kweon, M. J.; Park, W. J.; Sim, K. S.] Korea Univ, Seoul 136701, South Korea. [Fokin, S. L.; Ikonnikov, V. V.; Kazantsev, A. V.; Manko, V. I.; Nyanin, A. S.; Vinogradov, A. A.; Volkov, M. A.; Yushmanov, I. E.] Russian Res Ctr, Kurchatov Inst, Moscow, Russia. [Aoki, K.; Fukao, Y.; Imai, K.; Okada, H.; Saito, N.; Sato, H. D.; Togawa, M.; Torii, H.] Kyoto Univ, Kyoto 6068502, Japan. [Drapier, O.; Fleuret, F.; Gonin, M.; de Cassagnac, R. Granier; Kim, H. J.; Romana, A.; Tram, V. -N.] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France. [Burward-IIoy, J. M.; Hartouni, E. P.; Heffner, M.; Johnson, S. C.; Soltz, R. A.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Barnes, P. D.; Boissevain, J. G.; Brooks, M. L.; Burward-IIoy, J. M.; Hansen, A. G.; Kunde, G. J.; Lee, D. M.; Leitch, M. J.; Liu, M. X.; McGaughey, P. L.; Moss, J. M.; Palounek, A. P. T.; Silvermyr, D.; Sondheim, W. E.; Sullivan, J. P.; vanHecke, H. W.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Gadrat, S.; Roche, G.; Rosnet, P.] Univ Clermont Ferrand, IN2P3, CNRS, LPC, F-63177 Clermont Ferrand, France. [Gustafsson, H. -A.; Nystrand, J.; Oskarsson, A.; Otterlund, I.; Rosendahl, S. S. E.; Stenlund, E.; Tydesjo, H.] Lund Univ, Dept Phys, SE-22100 Lund, Sweden. [Bathe, S.; Bucher, D.; Buesching, H.; Klein-Boesing, C.; Santo, R.] Univ Munster, Inst Kernphys, D-48149 Munster, Germany. [Joo, K. S.; Uam, T. J.] Myongji Univ, Yongin 449728, Kyonggido, South Korea. [Tanaka, Y.] Nagasaki Inst Appl Sci, Nagasaki 8510193, Japan. [Bassalleck, B.; Bruner, N.; Fields, D. E.; Hobbs, R.; Pierson, A.; Sanfratello, L.; Thomas, T. L.] Univ New Mexico, Albuquerque, NM 87131 USA. [Al-Jamel, A.; Armendariz, R.; Brown, D. S.; Hoover, A.; Kyle, G. S.; Pate, S. F.; Stepanov, M.] New Mexico State Univ, Las Cruces, NM 88003 USA. [Awes, T. C.; Cianciolo, V.; Efremenko, Y. V.; Read, K. F.; Stankus, P. W.; Young, G. R.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Comets, M. P.; Espagnon, B.; Jouan, D.; Le Bornec, Y.; Willis, N.] Univ Paris 11, IPN, IN2P3, CNRS, F-91406 Orsay, France. [Mao, Y.] Peking Univ, Beijing 100871, Peoples R China. [Baublis, V.; Khanzadeev, A.; Kochenda, L.; Komkov, B.; Riabov, V.; Riabov, Y.; Samsonov, V.; Vznuzdaev, E.] Petersburg Nucl Phys Inst, RU-188300 Gatchina, Leningrad Reg, Russia. [Akiba, Y.; En'yo, H.; Fukao, Y.; Goto, Y.; Hasuko, K.; Heuser, J. M.; Horaguchi, T.; Ichihara, T.; Imai, K.; Ishihara, M.; Jinnouchi, O.; Kamihara, N.; Kurita, K.; Mao, Y.; Ohnishi, H.; Okada, H.; Okada, K.; Rykov, V. L.; Saito, N.; Sato, H. D.; Shibata, T. -A.; Taketani, A.; Tanida, K.; Togawa, M.; Tojo, J.; Watanabe, Y.; Yokkaichi, S.] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan. [Bazilevsky, A.; Bunce, G.; Deshpande, A.; En'yo, H.; Fields, D. E.; Fukao, Y.; Goto, Y.; Perdekamp, M. Grosse; Horaguchi, T.; Ichihara, T.; Jinnouchi, O.; Kaneta, M.; Kiyomichi, A.; Kobayashi, H.; Okada, K.; Saito, N.; Taketani, A.; Torii, H.; Watanabe, Y.; Yokkaichi, S.] Brookhaven Natl Lab, RIKEN, BNL Res Ctr, Upton, NY 11973 USA. [Dietzsch, O.; Silva, C. L.; Takagui, E. M.] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil. [Lim, H.; Park, J.] Seoul Natl Univ, Syst Elect Lab, Seoul, South Korea. [Ajitanand, N. N.; Alexander, J.; Holzmann, W.; Issah, M.; Lacey, R.; Taranenko, A.] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA. [Averbeck, R.; Butsyk, S.; Citron, Z.; Devismes, A.; Drees, A.; Jacak, B. V.; Jia, J.; Leckey, S.; Matathias, F.; Milov, A.; Pantuev, V.; Purwar, A. K.; Reuter, M.; Schutz, Y.; Sickles, A.; Velkovsky, M.] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA. [Aphecetche, L.; Camard, X.; Cussonneau, J. P.; Delagrange, H.; Finck, C.; Germain, M.; Martinez, G.] Univ Nantes, Ecole Mines, SUBATECH, CNRS,IN2P3, F-44307 Nantes, France. [Dzhordzhadze, V.; Glenn, A.; Newby, J.; Read, K. F.; Sorensen, S. P.] Univ Tennessee, Knoxville, TN 37996 USA. [Horaguchi, T.; Kamihara, N.; Shibata, T. -A.] Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan. [Inaba, M.; Konno, M.; Masui, H.; Miake, Y.; Sakai, S.; Sato, S.; Shimomura, M.; Takagi, S.] Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 305, Japan. [Greene, S. V.; Maguire, C. F.; Miller, T. E.; Ojha, I. D.] Vanderbilt Univ, Nashville, TN 37235 USA. [Kametani, S.; Katou, K.; Kikuchi, J.; Matsumoto, T.; Sakaguchi, T.] Waseda Univ, Adv Res Inst Sci & Engn, Tokyo 1620044, Japan. [Fraenkel, Z.; Kametani, S.; Kozlov, A.; Mukhopadhyay, D.; Pal, D.; Ravinovich, I.; Tserruya, I.] Weizmann Inst Sci, IL-76100 Rehovot, Israel. [Choi, I. J.; Kang, J. H.; Kim, D. J.; Kim, H. J.; Kwon, Y.; Ryu, S. S.] Yonsei Univ, IPAP, Seoul 120749, South Korea. [Drachenberg, J. L.; Isenhower, D.; Isenhower, L.; Kuberg, C. H.; McCain, M. C.; Qualls, J. M.; Towell, R. S.] Abilene Christian Univ, Abilene, TX 79699 USA. RP Adler, SS (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. EM jacak@skipper.physics.sunysb.edu RI Semenov, Vitaliy/E-9584-2017; seto, richard/G-8467-2011; Csanad, Mate/D-5960-2012; Csorgo, Tamas/I-4183-2012; En'yo, Hideto/B-2440-2015; Hayano, Ryugo/F-7889-2012; HAMAGAKI, HIDEKI/G-4899-2014; Durum, Artur/C-3027-2014; Sorensen, Soren /K-1195-2016; Yokkaichi, Satoshi/C-6215-2017; Taketani, Atsushi/E-1803-2017 OI Hayano, Ryugo/0000-0002-1214-7806; Sorensen, Soren /0000-0002-5595-5643; Taketani, Atsushi/0000-0002-4776-2315 NR 35 TC 19 Z9 19 U1 6 U2 8 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 EI 1089-490X J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2008 VL 77 IS 1 AR 014905 DI 10.1103/PhysRevC.77.014905 PG 13 WC Physics, Nuclear SC Physics GA 258JG UT WOS:000252863600038 ER PT J AU Alpizar-Vicente, AM Bredeweg, TA Esch, EI Greife, U Haight, RC Hatarik, R O'Donnell, JM Reifarth, R Rundberg, RS Ullmann, JL Vieira, DJ Wouters, JM AF Alpizar-Vicente, A. M. Bredeweg, T. A. Esch, E. -I. Greife, U. Haight, R. C. Hatarik, R. O'Donnell, J. M. Reifarth, R. Rundberg, R. S. Ullmann, J. L. Vieira, D. J. Wouters, J. M. TI Neutron capture cross section of (62)Ni at s-process energies SO PHYSICAL REVIEW C LA English DT Article ID NUCLEOSYNTHESIS; NUCLEAR AB The neutron capture cross section of (62)Ni has been measured in the energy range relevant to the astrophysical s-process and Maxwellian-averaged cross sections (MACS) were extracted. The experiment was performed with an enriched (62)Ni sample at a white neutron source using a 160 segment BaF(2) detector array. The experimental results: 31.5 +/- 2.5(stat) +/- 2.2(sys) mb (MACS at kT=25 keV) and 25.8 +/- 1.8(stat) +/- 1.9(sys) mb (MACS at kT=30 keV) resolve a previous discrepancy between recent experiments. C1 [Alpizar-Vicente, A. M.; Greife, U.; Hatarik, R.; Reifarth, R.] Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA. [Alpizar-Vicente, A. M.; Bredeweg, T. A.; Esch, E. -I.; Haight, R. C.; Hatarik, R.; O'Donnell, J. M.; Reifarth, R.; Rundberg, R. S.; Ullmann, J. L.; Vieira, D. J.; Wouters, J. M.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Greife, U (reprint author), Colorado Sch Mines, Dept Phys, 1523 Illinois St, Golden, CO 80401 USA. EM ugreife@mines.edu NR 15 TC 20 Z9 20 U1 0 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2008 VL 77 IS 1 AR 015806 DI 10.1103/PhysRevC.77.015806 PG 5 WC Physics, Nuclear SC Physics GA 258JG UT WOS:000252863600056 ER PT J AU Alver, B Back, BB Baker, MD Ballintijn, M Barton, DS Betts, RR Bindel, R Busza, W Chetluru, V Garcia, E Gburek, T Hamblen, J Heinz, U Hofman, DJ Hollis, RS Iordanova, A Li, W Loizides, C Manly, S Mignerey, AC Nouicer, R Olszewski, A Reed, C Roland, C Roland, G Sagerer, J Steinberg, P Stephans, GSF Tonjes, MB Trzupek, A van Nieuwenhuizen, GJ Vaurynovich, SS Verdier, R Veres, GI Walters, P Wenger, E Wosiek, B Wozniak, K Wyslouch, B AF Alver, B. Back, B. B. Baker, M. D. Ballintijn, M. Barton, D. S. Betts, R. R. Bindel, R. Busza, W. Chetluru, V. Garcia, E. Gburek, T. Hamblen, J. Heinz, U. Hofman, D. J. Hollis, R. S. Iordanova, A. Li, W. Loizides, C. Manly, S. Mignerey, A. C. Nouicer, R. Olszewski, A. Reed, C. Roland, C. Roland, G. Sagerer, J. Steinberg, P. Stephans, G. S. F. Tonjes, M. B. Trzupek, A. van Nieuwenhuizen, G. J. Vaurynovich, S. S. Verdier, R. Veres, G. I. Walters, P. Wenger, E. Wosiek, B. Wozniak, K. Wyslouch, B. TI Importance of correlations and fluctuations on the initial source eccentricity in high-energy nucleus-nucleus collisions SO PHYSICAL REVIEW C LA English DT Article ID QUARK-GLUON PLASMA; ELLIPTIC FLOW; CENTRALITY DEPENDENCE; SIGNATURE; MODEL; COLLABORATION; MULTIPLICITY; PERSPECTIVE; SCATTERING; PHYSICS AB In relativistic heavy-ion collisions, anisotropic collective flow is driven, event by event, by the initial eccentricity of the matter created in the nuclear overlap zone. Interpretation of the anisotropic flow data thus requires a detailed understanding of the effective initial source eccentricity of the event sample. In this paper, we investigate various ways of defining this effective eccentricity using the Monte Carlo Glauber (MCG) approach. In particular, we examine the participant eccentricity, which quantifies the eccentricity of the initial source shape by the major axes of the ellipse formed by the interaction points of the participating nucleons. We show that reasonable variation of the density parameters in the Glauber calculation, as well as variations in how matter production is modeled, do not significantly modify the already established behavior of the participant eccentricity as a function of collision centrality. Focusing on event-by-event fluctuations and correlations of the distributions of participating nucleons, we demonstrate that, depending on the achieved event-plane resolution, fluctuations in the elliptic flow magnitude v(2) lead to most measurements being sensitive to the root-mean-square rather than the mean of the v(2) distribution. Neglecting correlations among participants, we derive analytical expressions for the participant eccentricity cumulants as a function of the number of participating nucleons, N-part, keeping nonnegligible contributions up to O(1/N-part(3)). We find that the derived expressions yield the same results as obtained from mixed-event MCG calculations which remove the correlations stemming from the nuclear collision process. Most importantly, we conclude from the comparison with MCG calculations that the fourth-order participant eccentricity cumulant does not approach the spatial anisotropy obtained assuming a smooth nuclear matter distribution. In particular, for the Cu+Cu system, these quantities deviate from each other by almost a factor of 2 over a wide range in centrality. This deviation reflects the essential role of participant spatial correlations in the interaction of two nuclei. C1 [Alver, B.; Ballintijn, M.; Busza, W.; Li, W.; Loizides, C.; Reed, C.; Roland, C.; Stephans, G. S. F.; van Nieuwenhuizen, G. J.; Vaurynovich, S. S.; Verdier, R.; Veres, G. I.; Wenger, E.; Wyslouch, B.] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA. [Back, B. B.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. [Baker, M. D.; Barton, D. S.; Nouicer, R.; Steinberg, P.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. [Baker, M. D.; Barton, D. S.; Nouicer, R.; Steinberg, P.] Brookhaven Natl Lab, C A Dept, Upton, NY 11973 USA. [Gburek, T.; Olszewski, A.; Trzupek, A.; Wosiek, B.; Wozniak, K.] Inst Nucl Phys, Krakow, Poland. [Alver, B.; Back, B. B.; Baker, M. D.; Ballintijn, M.; Barton, D. S.; Betts, R. R.; Bindel, R.; Busza, W.; Chetluru, V.; Garcia, E.; Gburek, T.; Hamblen, J.; Heinz, U.; Hofman, D. J.; Hollis, R. S.; Iordanova, A.; Li, W.; Loizides, C.; Manly, S.; Mignerey, A. C.; Nouicer, R.; Olszewski, A.; Reed, C.; Roland, C.; Roland, G.; Sagerer, J.; Steinberg, P.; Stephans, G. S. F.; Tonjes, M. B.; Trzupek, A.; van Nieuwenhuizen, G. J.; Vaurynovich, S. S.; Verdier, R.; Veres, G. I.; Walters, P.; Wenger, E.; Wosiek, B.; Wozniak, K.; Wyslouch, B.] Natl Cent Univ, Dept Phys, Chungli 32054, Taiwan. [Heinz, U.] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA. [Betts, R. R.; Chetluru, V.; Garcia, E.; Hofman, D. J.; Hollis, R. S.; Iordanova, A.; Sagerer, J.] Univ Illinois, Dept Phys, Chicago, IL 60607 USA. [Bindel, R.; Mignerey, A. C.; Tonjes, M. B.] Univ Maryland, Dept Chem, College Pk, MD 20742 USA. [Hamblen, J.; Manly, S.; Walters, P.] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA. RP Alver, B (reprint author), MIT, Nucl Sci Lab, Cambridge, MA 02139 USA. RI Mignerey, Alice/D-6623-2011; OI Holzman, Burt/0000-0001-5235-6314 NR 54 TC 151 Z9 151 U1 0 U2 4 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 EI 1089-490X J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2008 VL 77 IS 1 AR 014906 DI 10.1103/PhysRevC.77.014906 PG 16 WC Physics, Nuclear SC Physics GA 258JG UT WOS:000252863600039 ER PT J AU Chemakin, I Cianciolo, V Cole, BA Fernow, RC Frawley, AD Gilkes, M Gushue, S Hartouni, EP Hiejima, H Justice, M Kang, JH Kirk, HG Link, JM Maeda, N McGrath, RL Mioduszewski, S Monroe, J Morrison, D Moulson, M Namboodiri, MN Rai, G Read, K Remsberg, L Rosati, M Shin, Y Soltz, RA Sorel, M Sorensen, S Thomas, JH Torun, Y Winter, DL Yang, X Zajc, WA Zhang, Y AF Chemakin, I. Cianciolo, V. Cole, B. A. Fernow, R. C. Frawley, A. D. Gilkes, M. Gushue, S. Hartouni, E. P. Hiejima, H. Justice, M. Kang, J. H. Kirk, H. G. Link, J. M. Maeda, N. McGrath, R. L. Mioduszewski, S. Monroe, J. Morrison, D. Moulson, M. Namboodiri, M. N. Rai, G. Read, K. Remsberg, L. Rosati, M. Shin, Y. Soltz, R. A. Sorel, M. Sorensen, S. Thomas, J. H. Torun, Y. Winter, D. L. Yang, X. Zajc, W. A. Zhang, Y. TI Pion production by protons on a thin beryllium target at 6.4, 12.3, and 17.5 GeV/c incident proton momenta SO PHYSICAL REVIEW C LA English DT Article ID PRODUCTION CROSS SECTIONS; PARTICLE PRODUCTION; COLLISIONS; BEV AB An analysis of inclusive pion production in proton-beryllium collisions at 6.4, 12.3, and 17.5 GeV/c proton beam momentum has been performed. The data were taken by Experiment 910 at the Alternating Gradient Synchrotron at the Brookhaven National Laboratory. The differential pi(+) and pi(-) production cross sections (d(2)sigma/dpd Omega) were measured up to 400 mrad in theta(pi) and up to 6 GeV/c in p(pi). The measured cross section was fit with a Sanford-Wang parametrization. C1 [Chemakin, I.; Cole, B. A.; Hiejima, H.; Link, J. M.; Monroe, J.; Moulson, M.; Sorel, M.; Winter, D. L.; Yang, X.; Zajc, W. A.; Zhang, Y.] Columbia Univ, New York, NY 10027 USA. [Fernow, R. C.; Gushue, S.; Kirk, H. G.; Mioduszewski, S.; Morrison, D.; Remsberg, L.; Rosati, M.; Thomas, J. H.; Torun, Y.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Frawley, A. D.; Maeda, N.] Florida State Univ, Tallahassee, FL 32306 USA. [Torun, Y.] IIT, Chicago, IL 60616 USA. [Rosati, M.] Iowa State Univ, Ames, IA 50010 USA. [Justice, M.] Kent State Univ, Kent, OH 44242 USA. [Moulson, M.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. [Rai, G.; Thomas, J. H.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Cianciolo, V.; Hartouni, E. P.; Namboodiri, M. N.; Soltz, R. A.; Thomas, J. H.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Cianciolo, V.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Gilkes, M.; McGrath, R. L.; Sorensen, S.; Torun, Y.] SUNY Stony Brook, Stony Brook, NY 11794 USA. [Mioduszewski, S.] Texas A&M Univ, College Stn, TX 77843 USA. [Hiejima, H.] Univ Illinois, Urbana, IL 61801 USA. [Mioduszewski, S.; Morrison, D.; Read, K.] Univ Tennessee, Knoxville, TN 37996 USA. [Link, J. M.] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA. [Kang, J. H.] Yonsei Univ, Seoul 120749, South Korea. RP Chemakin, I (reprint author), Columbia Univ, New York, NY 10027 USA. EM Jonathan.Link@vt.edu RI Link, Jonathan/L-2560-2013; OI Link, Jonathan/0000-0002-1514-0650; Torun, Yagmur/0000-0003-2336-6585; Hartouni, Edward/0000-0001-9869-4351 NR 15 TC 26 Z9 26 U1 1 U2 4 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2008 VL 77 IS 1 AR 015209 DI 10.1103/PhysRevC.77.015209 PG 10 WC Physics, Nuclear SC Physics GA 258JG UT WOS:000252863600048 ER PT J AU Chiba, S Koura, H Hayakawa, T Maruyama, T Kawano, T Kajino, T AF Chiba, S. Koura, H. Hayakawa, T. Maruyama, T. Kawano, T. Kajino, T. TI Direct and semi-direct capture in low-energy (n, gamma) reactions of neutron-rich tin isotopes and its implications for r-process nucleosynthesis SO PHYSICAL REVIEW C LA English DT Article ID DIRECT RADIATIVE-CAPTURE; METAL-POOR STARS; CROSS-SECTION; NUCLEI; MODELS; STATES AB The direct and semi-direct (DSD) components of the neutron capture cross sections are calculated for a series of tin isotopes by employing a single-particle potential (SPP) that gives a good reproduction of the known single-particle energies (SPEs) over a wide mass region. The results are compared with the Hauser-Feshbach (HF) contribution in the energy region of astrophysical interest. The calculated result shows that the HF component drops off rapidly for isotope (132)Sn and toward more neutron-rich ones, whereas the DSD component decreases only smoothly and eventually becomes dominant. This result is consistent with those of previous studies, but the dependence of the DSD cross section on the target mass number is a feature of the present SPP that gives a smooth variation of SPEs. As a consequence, the direct portion of the DSD component gives the largest contribution to the total (n,gamma) cross section for neutron-rich isotopes below a few MeV. Therefore, the direct capture process modifies the astrophysical (n,gamma) reaction rates to a great extent. The semi-direct component, however, gives a negligible contribution to the astrophysical reaction rates, but its impact is significant above several MeV. The reason for the difference in isotopic dependence between the HF and DSD components is discussed, and its implication for r-process nucleosynthesis is given. C1 [Chiba, S.; Koura, H.; Maruyama, T.] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan. [Hayakawa, T.] Japan Atom Energy Agcy, Kansai Photon Sci Inst, Kyoto 6190215, Japan. [Hayakawa, T.; Kajino, T.] Univ Tokyo, Sch Sci, Dept Astron, Tokyo 1130033, Japan. [Hayakawa, T.; Kajino, T.] Natl Astron Observ, Tokyo 1818588, Japan. [Kawano, T.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Chiba, S (reprint author), Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan. RI Koura, Hiroyuki/I-6708-2012; Hayakawa, Takehito/K-8478-2015 OI Koura, Hiroyuki/0000-0003-1057-4000; NR 33 TC 14 Z9 14 U1 1 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2008 VL 77 IS 1 AR 015809 DI 10.1103/PhysRevC.77.015809 PG 7 WC Physics, Nuclear SC Physics GA 258JG UT WOS:000252863600059 ER PT J AU Couture, A Beard, M Couder, M Gorres, J Lamm, L LeBlanc, PJ Lee, HY O'Brien, S Palumbo, A Stech, E Strandberg, E Tan, W Uberseder, E Ugalde, C Wiescher, M Azuma, R AF Couture, A. Beard, M. Couder, M. Gorres, J. Lamm, L. LeBlanc, P. J. Lee, H. Y. O'Brien, S. Palumbo, A. Stech, E. Strandberg, E. Tan, W. Uberseder, E. Ugalde, C. Wiescher, M. Azuma, R. TI Measurement of the (19)F(p, gamma)(20)Ne reaction and interference terms from E(c.m.)=200-760 keV SO PHYSICAL REVIEW C LA English DT Article ID THERMONUCLEAR REACTION-RATES; KEV PROTON ENERGIES; LIGHT-NUCLEI; RESONANCES; FLUORINE; CAPTURE AB The (19)F(p,gamma)(20)Ne reaction represents the only breakout path for the carbon-nitrogen-oxygen cycle operating at temperatures below T=0.1 GK, an energy regime important for main-sequence hydrogen burning as well as hydrogen burning in asymptotic giant branch stars. Large experimental uncertainties exist due to unknown low energy direct and resonant reaction contributions that have been difficult to study because of the high gamma-ray background from the (19)F(p,alpha(2)gamma) reaction. A new detection technique has been developed at the University of Notre Dame to measure the (19)F(p,gamma) and (19)F(p,alpha(i)gamma) reactions over an energy range of E(c.m.)=200-760 keV. The analysis was carried out in a Breit-Wigner framework. This allowed a new determination of the resonance parameters as well as a first measurement of the signs of the interference terms. Partial widths and resonance strengths are reported for the resonances in this region. C1 [Couture, A.; Beard, M.; Couder, M.; Gorres, J.; Lamm, L.; LeBlanc, P. J.; Lee, H. Y.; O'Brien, S.; Palumbo, A.; Stech, E.; Strandberg, E.; Tan, W.; Uberseder, E.; Ugalde, C.; Wiescher, M.] Univ Notre Dame, Nucl Sci Lab, Notre Dame, IN 46556 USA. [Azuma, R.] Univ Toronto, Dept Phys, Toronto, ON M55 1A7, Canada. RP Couture, A (reprint author), Los Alamos Natl Lab, Los Alamos Neutron Sci Ctr, POB 1663, Los Alamos, NM 87545 USA. EM acouture@lanl.gov RI Couder, Manoel/B-1439-2009; Tan, Wanpeng/A-4687-2008 OI Couder, Manoel/0000-0002-0636-744X; Tan, Wanpeng/0000-0002-5930-1823 NR 32 TC 8 Z9 8 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2008 VL 77 IS 1 AR 015802 DI 10.1103/PhysRevC.77.015802 PG 9 WC Physics, Nuclear SC Physics GA 258JG UT WOS:000252863600052 ER PT J AU Fornal, B Janssens, RVF Broda, R Marginean, N Beghini, S Corradi, L Carpenter, MP De Angelis, G Della Vedova, F Farnea, E Fioretto, E Gadea, A Guiot, B Honma, M Krolas, W Lauritsen, T Lunardi, S Mantica, PF Mason, P Montagnoli, G Napoli, DR Otsuka, T Pawlat, T Pollarolo, G Scarlassara, F Stefanini, AM Seweryniak, D Szilner, S Ur, CA Trotta, M Valiente-Dobon, JJ Wrzesinski, J Zhu, S AF Fornal, B. Janssens, R. V. F. Broda, R. Marginean, N. Beghini, S. Corradi, L. Carpenter, M. P. De Angelis, G. Della Vedova, F. Farnea, E. Fioretto, E. Gadea, A. Guiot, B. Honma, M. Krolas, W. Lauritsen, T. Lunardi, S. Mantica, P. F. Mason, P. Montagnoli, G. Napoli, D. R. Otsuka, T. Pawlat, T. Pollarolo, G. Scarlassara, F. Stefanini, A. M. Seweryniak, D. Szilner, S. Ur, C. A. Trotta, M. Valiente-Dobon, J. J. Wrzesinski, J. Zhu, S. TI Yrast structure of the neutron-rich N=31 isotones (51)Ca and (52)Sc SO PHYSICAL REVIEW C LA English DT Article ID HEAVY-ION REACTIONS; COLLISIONS; NUCLEI; PARTICLE AB The low-lying yrast states in the (51)Ca and (52)Sc nuclei were investigated to obtain information on the evolution of the p(1/2) and f(5/2) neutron single-particle orbitals in neutron-rich nuclei near proton number Z=20. Level structures associated with neutron excitations into these two orbitals and with proton excitations across the Z=20 shell gap were identified. Shell-model calculations with the recently proposed GXPF1A interaction account reasonably well for the fp-shell states. The energy separation between the nu p(1/2) and nu f(5/2) orbitals in the Ca isotopes appears to be overestimated by the GXPF1A Hamiltonian. C1 [Fornal, B.; Broda, R.; Krolas, W.; Pawlat, T.; Wrzesinski, J.] Inst Nucl Phys, Polish Acad Sci, PL-31342 Krakow, Poland. [Janssens, R. V. F.; Carpenter, M. P.; Lauritsen, T.; Seweryniak, D.; Zhu, S.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. [Marginean, N.; Corradi, L.; De Angelis, G.; Della Vedova, F.; Fioretto, E.; Gadea, A.; Guiot, B.; Napoli, D. R.; Stefanini, A. M.; Valiente-Dobon, J. J.] Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy. [Marginean, N.] Horia Hulubei Natl Inst Phys & Nucl Engn, RO-077125 Bucharest, Romania. [Beghini, S.; Lunardi, S.; Montagnoli, G.; Scarlassara, F.] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy. [Beghini, S.; Farnea, E.; Lunardi, S.; Mason, P.; Montagnoli, G.; Scarlassara, F.; Ur, C. A.] Ist Nazl Fis Nucl, Sezione Padova, I-35131 Padua, Italy. [Honma, M.] Univ Aizu, Ctr Math Sci, Fukushima 9658580, Japan. [Krolas, W.] Oak Ridge Natl Lab, Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA. [Mantica, P. F.] Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA. [Otsuka, T.] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan. [Otsuka, T.] RIKEN, Wako, Saitama 3510198, Japan. [Pollarolo, G.] Univ Turin, Dipartimento Fis Teor, I-10125 Turin, Italy. [Pollarolo, G.] Ist Nazl Fis Nucl, I-10125 Turin, Italy. [Szilner, S.] Rudjer Boskovic Inst, HR-10001 Zagreb, Croatia. [Trotta, M.] Ist Nazl Fis Nucl, I-80126 Naples, Italy. RP Fornal, B (reprint author), Inst Nucl Phys, Polish Acad Sci, Ul Radzikowskiego 152, PL-31342 Krakow, Poland. RI Krolas, Wojciech/N-9391-2013; Gadea, Andres/L-8529-2014; OTSUKA, TAKAHARU/G-5072-2014; Carpenter, Michael/E-4287-2015; Marginean, Nicolae Marius/C-4732-2011; Napoli, Daniel R./D-9863-2012 OI Gadea, Andres/0000-0002-4233-1970; Carpenter, Michael/0000-0002-3237-5734; Napoli, Daniel R./0000-0002-8154-6958 NR 33 TC 28 Z9 28 U1 1 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2008 VL 77 IS 1 AR 014304 DI 10.1103/PhysRevC.77.014304 PG 7 WC Physics, Nuclear SC Physics GA 258JG UT WOS:000252863600010 ER PT J AU Gross, F Ramalho, G Pena, MT AF Gross, Franz Ramalho, G. Pena, M. T. TI Pure S-wave covariant model for the nucleon SO PHYSICAL REVIEW C LA English DT Article ID ELECTROMAGNETIC FORM-FACTORS; 3-BODY BOUND-STATE; PION CLOUD; NEUTRON; SCATTERING; EQUATIONS; TRANSITION; (GEV/C)(2); BINDING; PHYSICS AB Using the manifestly covariant spectator theory and modeling the nucleon as a system of three constituent quarks with their own electromagnetic structure, we show that all four nucleon electromagnetic form factors can be very well described by a manifestly covariant nucleon wave function with zero orbital angular momentum. Since the concept of wave function depends on the formalism, the conclusions of light-cone theory requiring nonzero angular momentum components are not inconsistent with our results. We also show that our model gives a qualitatively correct description of deep inelastic scattering, unifying the phenomenology at high and low momentum transfer. Finally, we review two different definitions of nuclear shape and show that the nucleon is spherical in this model, regardless of how shape is defined. C1 [Gross, Franz] Coll William & Mary, Williamsburg, VA 23185 USA. [Gross, Franz; Ramalho, G.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. [Ramalho, G.; Pena, M. T.] Ctr Fis Teor Particulas, P-1049001 Lisbon, Portugal. [Pena, M. T.] Univ Tecn Lisboa, Dept Phys, Inst Super Tecn, P-1049001 Lisbon, Portugal. RP Gross, F (reprint author), Coll William & Mary, Williamsburg, VA 23185 USA. RI Pena, Teresa/M-4683-2013 OI Pena, Teresa/0000-0002-3529-2408 NR 72 TC 60 Z9 60 U1 0 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9985 EI 2469-9993 J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2008 VL 77 IS 1 AR 015202 DI 10.1103/PhysRevC.77.015202 PG 18 WC Physics, Nuclear SC Physics GA 258JG UT WOS:000252863600041 ER PT J AU Mantica, PF Broda, R Crawford, HL Damaske, A Fornal, B Hecht, AA Hoffman, C Horoi, M Hoteling, N Janssens, RVF Pereira, J Pinter, JS Stoker, JB Tabor, SL Sumikama, T Walters, WB Wang, X Zhu, S AF Mantica, P. F. Broda, R. Crawford, H. L. Damaske, A. Fornal, B. Hecht, A. A. Hoffman, C. Horoi, M. Hoteling, N. Janssens, R. V. F. Pereira, J. Pinter, J. S. Stoker, J. B. Tabor, S. L. Sumikama, T. Walters, W. B. Wang, X. Zhu, S. TI beta decay of neutron-rich (53-56)Ca SO PHYSICAL REVIEW C LA English DT Article ID SHELL-MODEL; EMISSION PROBABILITIES; COULOMB-EXCITATION; SINGLE-PARTICLE; ISOTOPES; NUCLEI; DEFORMATION; CLOSURES; BEAMS; CORE AB beta-decay properties of neutron-rich Ca isotopes have been obtained. Half-life values were determined for the first time for (54)Ca (86 +/- 7 ms), (55)Ca (22 +/- 2 ms), and (56)Ca (11 +/- 2 ms). The half-life of 230 +/- 60 ms deduced for (53)Ca is significantly longer than reported previously, where the decay chain (53)K -> (53)Ca -> (53)Sc was considered. A delayed gamma ray with an energy of 247 keV was identified following beta decay of (54)Ca and is proposed to depopulate the 1(1)(+) level in (54)Sc. The beta-decay properties compare favorably with the results of shell-model calculations completed in the full pf space with the GXPF1 interaction. The half-lives of the neutron-rich Ca isotopes are also compared with gross beta-decay theory. The systematic trend of the neutron-rich Ca half-lives is consistent with the presence of a subshell gap at N=32. C1 [Mantica, P. F.; Crawford, H. L.; Damaske, A.; Pereira, J.; Pinter, J. S.; Stoker, J. B.] Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA. [Mantica, P. F.; Crawford, H. L.; Damaske, A.; Pinter, J. S.; Stoker, J. B.] Michigan State Univ, Dept Chem, E Lansing, MI 48824 USA. [Broda, R.] Inst Nucl Phys, Polish Acad Sci, PL-31342 Krakow, Poland. [Hecht, A. A.; Hoteling, N.] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA. [Hecht, A. A.; Hoteling, N.; Janssens, R. V. F.; Wang, X.; Zhu, S.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. [Hoffman, C.; Tabor, S. L.; Walters, W. B.] Florida State Univ, Dept Phys & Astron, Tallahassee, FL 32306 USA. [Pereira, J.] Cent Michigan Univ, Joint Inst Nucl Astrophys, Mt Pleasant, MI 48859 USA. [Sumikama, T.] RIKEN, Wako, Saitama 3510198, Japan. [Wang, X.] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. RP Mantica, PF (reprint author), Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA. RI Crawford, Heather/E-2208-2011 NR 47 TC 20 Z9 20 U1 2 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2008 VL 77 IS 1 AR 014313 DI 10.1103/PhysRevC.77.014313 PG 10 WC Physics, Nuclear SC Physics GA 258JG UT WOS:000252863600019 ER PT J AU Manweiler, R Cadman, RV Spinka, H Abaev, VV Allen, D Allgower, CE Alyea, J Bates, MA Bekrenev, VS Briscoe, WJ Clajus, M Comfort, J Corliss, R Craig, K Gibson, A Greene, R Grosnick, DP Isenhower, D Kasprzyk, TE Knecht, N Koetke, DD Kozlenko, NG Kruglov, SP Kulbardis, AA Lolos, G Lopatin, IV Manley, DM Marusic, A McDonald, S Olmsted, J Papandreou, Z Peaslee, DC Phaisangittisakul, N Ramirez, AF Sadler, M Shafi, A Stanislaus, TDS Staudenmaier, HM Strakovsky, II Supek, I Thoms, J Tippens, WB Wolf, S AF Manweiler, R. Cadman, R. V. Spinka, H. Abaev, V. V. Allen, D. Allgower, C. E. Alyea, J. Bates, M. A. Bekrenev, V. S. Briscoe, W. J. Clajus, M. Comfort, J. Corliss, R. Craig, K. Gibson, A. Greene, R. Grosnick, D. P. Isenhower, D. Kasprzyk, T. E. Knecht, N. Koetke, D. D. Kozlenko, N. G. Kruglov, S. P. Kulbardis, A. A. Lolos, G. Lopatin, I. V. Manley, D. M. Marusic, A. McDonald, S. Olmsted, J. Papandreou, Z. Peaslee, D. C. Phaisangittisakul, N. Ramirez, A. F. Sadler, M. Shafi, A. Stanislaus, T. D. S. Staudenmaier, H. M. Strakovsky, I. I. Supek, I. Thoms, J. Tippens, W. B. Wolf, S. TI Measurement of the K(-)p ->Sigma(0)pi(0) reaction between 514 and 750 MeV/c SO PHYSICAL REVIEW C LA English DT Article ID CRYSTAL-BALL DETECTOR; NEUTRAL FINAL-STATES; QUARK-MODEL; ELECTROMAGNETIC DECAYS; HYPERON RESONANCES; KBARN INTERACTIONS; PARTICLE PHYSICS; EXCITED HYPERONS; P INTERACTIONS; BAG MODEL AB The reaction K(-)p ->Sigma(0)pi(0)-> neutrals was studied with the Crystal Ball detector at the BNL Alternating Gradient Synchrotron for beam momenta between 514 and 750 MeV/c. The photons from Sigma(0) and pi(0) decays were detected, as well as the neutron in a small fraction of the events. The differential cross section and the Sigma(0) polarization are reported at eight momenta and nearly the full angular range. Total cross sections are derived from Legendre polynomial fits to the data. The measurements presented are of considerably higher precision than previous results. C1 [Manweiler, R.; Cadman, R. V.; Spinka, H.; Allgower, C. E.; Bates, M. A.; Greene, R.; Kasprzyk, T. E.] Argonne Natl Lab, Argonne, IL 60439 USA. [Manweiler, R.; Allen, D.; Alyea, J.; Corliss, R.; Gibson, A.; Grosnick, D. P.; Koetke, D. D.; Stanislaus, T. D. S.; Thoms, J.; Wolf, S.] Valparaiso Univ, Valparaiso, IN 46383 USA. [Abaev, V. V.; Bekrenev, V. S.; Kozlenko, N. G.; Kulbardis, A. A.; Lopatin, I. V.] Petersburg Nucl Phys Inst, RU-188350 Gatchina, Russia. [Briscoe, W. J.; Shafi, A.; Strakovsky, I. I.] George Washington Univ, Washington, DC 20052 USA. [Clajus, M.; Marusic, A.; McDonald, S.; Phaisangittisakul, N.; Tippens, W. B.] Univ Calif Los Angeles, Los Angeles, CA 90095 USA. [Comfort, J.; Craig, K.; Ramirez, A. F.] Arizona State Univ, Tempe, AZ 85287 USA. [Isenhower, D.; Sadler, M.] Abilene Christian Univ, Abilene, TX 79699 USA. [Knecht, N.; Lolos, G.; Papandreou, Z.] Univ Regina, Regina, SK S4S 0A2, Canada. [Manley, D. M.] Kent State Univ, Kent, OH 44242 USA. [Peaslee, D. C.] Univ Maryland, College Pk, MD 20742 USA. [Staudenmaier, H. M.] Univ Karlsruhe, D-76128 Karlsruhe, Germany. [Supek, I.] Rudjer Boskovic Inst, Zagreb 10000, Croatia. RP Manweiler, R (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Marusic, Ana/E-7683-2013 OI Marusic, Ana/0000-0001-6272-0917 NR 58 TC 13 Z9 14 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9985 EI 2469-9993 J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2008 VL 77 IS 1 AR 015205 DI 10.1103/PhysRevC.77.015205 PG 22 WC Physics, Nuclear SC Physics GA 258JG UT WOS:000252863600044 ER PT J AU Park, K Burkert, VD Kim, W Aznauryan, IG Minehart, R Smith, LC Joo, K Elouadrhiri, L Adams, G Amaryan, MJ Ambrozewicz, P Anghinolfi, M Asryan, G Avakian, H Bagdasaryan, H Baillie, N Ball, JP Baltzell, NA Barrow, S Batourine, V Battaglieri, M Bedlinskiy, I Bektasoglu, M Bellis, M Benmouna, N Berman, BL Biselli, AS Blaszczyk, L Bonner, BE Bookwalter, C Bouchigny, S Boiarinov, S Bradford, R Branford, D Briscoe, J Brooks, WK Bultmann, S Butuceanu, C Calarco, JR Careccia, SL Carman, DS Casey, L Cazes, A Chen, S Cheng, L Cole, PL Collins, P Coltharp, P Cords, D Corvisiero, P Crabb, D Crede, V Cummings, JP Dale, D Dashyan, N De Masi, R De Vita, R De Sanctis, E Degtyarenko, PV Denizli, H Dennis, L Deur, A Dhamija, S Dharmawardane, KV Dhuga, KS Dickson, R Djalali, C Dodge, GE Donnelly, J Doughty, D Dugger, M Dytman, S Dzyubak, OP Egiyan, H Egiyan, KS El Fassi, L Eugenio, P Fatemi, R Fedotov, G Feldman, G Feuerbach, RJ Forest, TA Fradi, A Funsten, H Gabrielyan, MY Garcon, M Gavalian, G Gevorgyan, N Gilfoyle, GP Giovanetti, KL Girod, FX Goetz, JT Gohn, W Golovatch, E Gonenc, A Gordon, CIO Gothe, RW Graham, L Griffioen, KA Guidal, M Guillo, M Guler, N Guo, L Gyurjyan, V Hadjidakis, C Hafidi, K Hafnaoui, K Hakobyan, H Hakobyan, RS Hanretty, C Hardie, J Hassall, N Heddle, D Hersman, FW Hicks, K Hleiqawi, I Holtrop, M Hyde-Wright, CE Ilieva, Y Ireland, DG Ishkhanov, BS Isupov, EL Ito, MM Jenkins, D Jo, HS Johnstone, JR Juengst, HG Kalantarians, N Keller, D Kellie, JD Khandaker, M Kim, KY Klein, A Klein, FJ Klimenko, AV Klusman, M Kossov, M Krahn, Z Kramer, LH Kubarovsky, V Kuhn, J Kuhn, SE Kuleshov, SV Kuznetsov, V Lachniet, J Laget, JM Langheinrich, J Lawrence, D Lee, T Li, J Lima, ACS Livingston, K Lu, HY Lukashin, K MacCormick, M Markov, N Mattione, P McAleer, S McKinnon, B McNabb, JWC Mecking, BA Mehrabyan, S Melone, JJ Mestayer, MD Meyer, CA Mibe, T Mikhailov, K Mirazita, M Miskimen, R Mokeev, V Morand, L Moreno, B Moriya, K Morrow, SA Moteabbed, M Mueller, J Munevar, E Mutchler, GS Nadel-Turonski, P Nasseripour, R Niccolai, S Niculescu, G Niculescu, I Niczyporuk, BB Niroula, MR Niyazov, RA Nozar, M O'Rielly, GV Osipenko, M Ostrovidov, AI Park, S Pasyuk, E Paterson, C Pereira, SA Philips, SA Pierce, J Pivnyuk, N Pocanic, D Pogorelko, O Polli, E Popa, I Pozdniakov, S Preedom, BM Price, JW Prok, Y Protopopescu, D Qin, LM Raue, BA Riccardi, G Ricco, G Ripani, M Ritchie, BG Ronchetti, F Rosner, G Rossi, P Rowntree, D Rubin, PD Sabatie, F Saini, MS Salamanca, J Salgado, C Santoro, JP Sapunenko, V Schott, D Schumacher, RA Serov, VS Sharabian, YG Sharov, D Shaw, J Shvedunov, NV Skabelin, AV Smith, ES Sober, DI Sokhan, D Stavinsky, A Stepanyan, SS Stepanyan, S Stokes, BE Stoler, P Strakovsky, II Strauch, S Suleiman, R Taiuti, M Takeuchi, T Tedeschi, DJ Tkabladze, A Tkachenko, S Todor, L Tur, C Ungaro, M Vineyard, MF Vlassov, AV Watts, DP Weinstein, LB Weygand, DP Williams, M Wolin, E Wood, MH Yegneswaran, A Yun, J Yurov, M Zana, L Zhang, B Zhang, J Zhao, B Zhao, ZW AF Park, K. Burkert, V. D. Kim, W. Aznauryan, I. G. Minehart, R. Smith, L. C. Joo, K. Elouadrhiri, L. Adams, G. Amaryan, M. J. Ambrozewicz, P. Anghinolfi, M. Asryan, G. Avakian, H. Bagdasaryan, H. Baillie, N. Ball, J. P. Baltzell, N. A. Barrow, S. Batourine, V. Battaglieri, M. Bedlinskiy, I. Bektasoglu, M. Bellis, M. Benmouna, N. Berman, B. L. Biselli, A. S. Blaszczyk, L. Bonner, B. E. Bookwalter, C. Bouchigny, S. Boiarinov, S. Bradford, R. Branford, D. Briscoe, J. Brooks, W. K. Bultmann, S. Butuceanu, C. Calarco, J. R. Careccia, S. L. Carman, D. S. Casey, L. Cazes, A. Chen, S. Cheng, L. Cole, P. L. Collins, P. Coltharp, P. Cords, D. Corvisiero, P. Crabb, D. Crede, V. Cummings, J. P. Dale, D. Dashyan, N. De Masi, R. De Vita, R. De Sanctis, E. Degtyarenko, P. V. Denizli, H. Dennis, L. Deur, A. Dhamija, S. Dharmawardane, K. V. Dhuga, K. S. Dickson, R. Djalali, C. Dodge, G. E. Donnelly, J. Doughty, D. Dugger, M. Dytman, S. Dzyubak, O. P. Egiyan, H. Egiyan, K. S. El Fassi, L. Eugenio, P. Fatemi, R. Fedotov, G. Feldman, G. Feuerbach, R. J. Forest, T. A. Fradi, A. Funsten, H. Gabrielyan, M. Y. Garcon, M. Gavalian, G. Gevorgyan, N. Gilfoyle, G. P. Giovanetti, K. L. Girod, F. X. Goetz, J. T. Gohn, W. Golovatch, E. Gonenc, A. Gordon, C. I. O. Gothe, R. W. Graham, L. Griffioen, K. A. Guidal, M. Guillo, M. Guler, N. Guo, L. Gyurjyan, V. Hadjidakis, C. Hafidi, K. Hafnaoui, K. Hakobyan, H. Hakobyan, R. S. Hanretty, C. Hardie, J. Hassall, N. Heddle, D. Hersman, F. W. Hicks, K. Hleiqawi, I. Holtrop, M. Hyde-Wright, C. E. Ilieva, Y. Ireland, D. G. Ishkhanov, B. S. Isupov, E. L. Ito, M. M. Jenkins, D. Jo, H. S. Johnstone, J. R. Juengst, H. G. Kalantarians, N. Keller, D. Kellie, J. D. Khandaker, M. Kim, K. Y. Klein, A. Klein, F. J. Klimenko, A. V. Klusman, M. Kossov, M. Krahn, Z. Kramer, L. H. Kubarovsky, V. Kuhn, J. Kuhn, S. E. Kuleshov, S. V. Kuznetsov, V. Lachniet, J. Laget, J. M. Langheinrich, J. Lawrence, D. Lee, T. Li, Ji Lima, A. C. S. Livingston, K. Lu, H. Y. Lukashin, K. MacCormick, M. Markov, N. Mattione, P. McAleer, S. McKinnon, B. McNabb, J. W. C. Mecking, B. A. Mehrabyan, S. Melone, J. J. Mestayer, M. D. Meyer, C. A. Mibe, T. Mikhailov, K. Mirazita, M. Miskimen, R. Mokeev, V. Morand, L. Moreno, B. Moriya, K. Morrow, S. A. Moteabbed, M. Mueller, J. Munevar, E. Mutchler, G. S. Nadel-Turonski, P. Nasseripour, R. Niccolai, S. Niculescu, G. Niculescu, I. Niczyporuk, B. B. Niroula, M. R. Niyazov, R. A. Nozar, M. O'Rielly, G. V. Osipenko, M. Ostrovidov, A. I. Park, S. Pasyuk, E. Paterson, C. Pereira, S. Anefalos Philips, S. A. Pierce, J. Pivnyuk, N. Pocanic, D. Pogorelko, O. Polli, E. Popa, I. Pozdniakov, S. Preedom, B. M. Price, J. W. Prok, Y. Protopopescu, D. Qin, L. M. Raue, B. A. Riccardi, G. Ricco, G. Ripani, M. Ritchie, B. G. Ronchetti, F. Rosner, G. Rossi, P. Rowntree, D. Rubin, P. D. Sabatie, F. Saini, M. S. Salamanca, J. Salgado, C. Santoro, J. P. Sapunenko, V. Schott, D. Schumacher, R. A. Serov, V. S. Sharabian, Y. G. Sharov, D. Shaw, J. Shvedunov, N. V. Skabelin, A. V. Smith, E. S. Sober, D. I. Sokhan, D. Stavinsky, A. Stepanyan, S. S. Stepanyan, S. Stokes, B. E. Stoler, P. Strakovsky, I. I. Strauch, S. Suleiman, R. Taiuti, M. Takeuchi, T. Tedeschi, D. J. Tkabladze, A. Tkachenko, S. Todor, L. Tur, C. Ungaro, M. Vineyard, M. F. Vlassov, A. V. Watts, D. P. Weinstein, L. B. Weygand, D. P. Williams, M. Wolin, E. Wood, M. H. Yegneswaran, A. Yun, J. Yurov, M. Zana, L. Zhang, B. Zhang, J. Zhao, B. Zhao, Z. W. CA Clas Collaboration TI Cross sections and beam asymmetries for (e)over-right-arrowp -> en pi(+) in the nucleon resonance region for 1.7 <= Q(2)<= 4.5 GeV(2) SO PHYSICAL REVIEW C LA English DT Article ID TRANSITION FORM-FACTORS; GAMMA-ASTERISK; QUARK-MODEL; ELECTROPRODUCTION; PI; SCATTERING; DEPENDENCE; FRAMEWORK; MESONS; EP AB The exclusive electroproduction process (e) over right arrowp -> e(')n pi(+) was measured in the range of the photon virtuality Q(2)=1.7-4.5 GeV(2), and the invariant mass range for the n pi(+) system of W=1.15-1.7 GeV using the CEBAF Large Acceptance Spectrometer. For the first time, these kinematics are probed in exclusive pi(+) production from protons with nearly full coverage in the azimuthal and polar angles of the n pi(+) center-of-mass system. The n pi(+) channel has particular sensitivity to the isospin 1/2 excited nucleon states, and together with the p pi(0) final state will serve to determine the transition form factors of a large number of resonances. The largest discrepancy between these results and present modes was seen in the sigma(')(LT) structure function. In this experiment, 31,295 cross section and 4,184 asymmetry data points were measured. Because of the large volume of data, only a reduced set of structure functions and Legendre polynomial moments can be presented that are obtained in model-independent fits to the differential cross sections. C1 [Park, K.; Kim, W.; Batourine, V.; Kuznetsov, V.; Stepanyan, S. S.; Yurov, M.] Kyungpook Natl Univ, Taegu 702701, South Korea. [Park, K.; Burkert, V. D.; Aznauryan, I. G.; Elouadrhiri, L.; Avakian, H.; Boiarinov, S.; Brooks, W. K.; Carman, D. S.; Cole, P. L.; Cords, D.; Degtyarenko, P. V.; Deur, A.; Doughty, D.; Egiyan, H.; Girod, F. X.; Guo, L.; Gyurjyan, V.; Hardie, J.; Heddle, D.; Ito, M. M.; Kramer, L. H.; Laget, J. M.; Mecking, B. A.; Mestayer, M. D.; Mokeev, V.; Niculescu, I.; Niczyporuk, B. B.; Niyazov, R. A.; Nozar, M.; Prok, Y.; Raue, B. A.; Santoro, J. P.; Sapunenko, V.; Sharabian, Y. G.; Smith, E. S.; Stepanyan, S.; Weygand, D. P.; Wolin, E.; Yegneswaran, A.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. [El Fassi, L.; Hafidi, K.; Hafnaoui, K.] Argonne Natl Lab, Argonne, IL 60439 USA. [Ball, J. P.; Collins, P.; Dugger, M.; Pasyuk, E.; Ritchie, B. G.] Arizona State Univ, Tempe, AZ 85287 USA. [Goetz, J. T.] Univ Calif Los Angeles, Los Angeles, CA 90095 USA. [Price, J. W.] Calif State Univ Dominguez Hills, Carson, CA 90747 USA. [Bellis, M.; Biselli, A. S.; Bradford, R.; Dickson, R.; Eugenio, P.; Feuerbach, R. J.; Krahn, Z.; Kuhn, J.; Lachniet, J.; McNabb, J. W. C.; Meyer, C. A.; Moriya, K.; Schumacher, R. A.; Todor, L.; Williams, M.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. [Casey, L.; Cheng, L.; Cole, P. L.; Hakobyan, R. S.; Klein, F. J.; Lukashin, K.; Sober, D. I.] Catholic Univ Amer, Washington, DC 20064 USA. [De Masi, R.; Garcon, M.; Girod, F. X.; Laget, J. M.; Morand, L.; Morrow, S. A.; Sabatie, F.] CEA Saclay, Serv Phys Nucl, F-91191 Gif Sur Yvette, France. [Hardie, J.] Christopher Newport Univ, Newport News, VA 23606 USA. [Gohn, W.; Markov, N.; Ungaro, M.; Zhao, B.] Univ Connecticut, Storrs, CT 06269 USA. [Branford, D.; Sokhan, D.] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland. [Tedeschi, D. J.] Emmy Noether Fdn, Berlin, Germany. [Biselli, A. S.] Fairfield Univ, Fairfield, CT 06824 USA. [Ambrozewicz, P.; Dhamija, S.; Gabrielyan, M. Y.; Gonenc, A.; Klein, F. J.; Kramer, L. H.; Moteabbed, M.; Nasseripour, R.; Schott, D.] Florida Int Univ, Miami, FL 33199 USA. [Park, K.; Barrow, S.; Blaszczyk, L.; Bookwalter, C.; Chen, S.; Coltharp, P.; Crede, V.; Dennis, L.; Eugenio, P.; Hanretty, C.; McAleer, S.; Ostrovidov, A. I.; Riccardi, G.; Saini, M. S.; Stokes, B. E.; Takeuchi, T.] Florida State Univ, Tallahassee, FL 32306 USA. [Benmouna, N.; Berman, B. L.; Briscoe, J.; Dhuga, K. S.; Feldman, G.; Ilieva, Y.; Juengst, H. G.; Lima, A. C. S.; Munevar, E.; Nadel-Turonski, P.; Niccolai, S.; Niculescu, I.; O'Rielly, G. V.; Philips, S. A.; Popa, I.; Strakovsky, I. I.; Strauch, S.] George Washington Univ, Washington, DC 20052 USA. [Donnelly, J.; Gordon, C. I. O.; Ireland, D. G.; Johnstone, J. R.; Kellie, J. D.; Livingston, K.; McKinnon, B.; Melone, J. J.; Paterson, C.; Protopopescu, D.; Rosner, G.; Watts, D. P.] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland. [Cole, P. L.; Dale, D.; Forest, T. A.; Salamanca, J.] Idaho State Univ, Pocatello, ID 83209 USA. [Avakian, H.; De Sanctis, E.; Mirazita, M.; Pereira, S. Anefalos; Polli, E.; Ronchetti, F.; Rossi, P.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. [Anghinolfi, M.; Battaglieri, M.; Corvisiero, P.; De Vita, R.; Golovatch, E.; Osipenko, M.; Ricco, G.; Ripani, M.; Sapunenko, V.; Taiuti, M.] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy. [Bouchigny, S.; De Masi, R.; Fradi, A.; Guidal, M.; Hadjidakis, C.; Jo, H. S.; MacCormick, M.; Moreno, B.; Morrow, S. A.; Niccolai, S.] Inst Phys Nucl, Orsay, France. [Bedlinskiy, I.; Boiarinov, S.; Kossov, M.; Kuleshov, S. V.; Mikhailov, K.; Pivnyuk, N.; Pogorelko, O.; Pozdniakov, S.; Serov, V. S.; Stavinsky, A.] Inst Theoret & Expt Phys, Moscow 117259, Russia. [Giovanetti, K. L.; Niculescu, G.; Niculescu, I.] James Madison Univ, Harrisonburg, VA 22807 USA. [Rowntree, D.; Skabelin, A. V.; Suleiman, R.; Zhang, B.] MIT, Cambridge, MA 02139 USA. [Lawrence, D.; Miskimen, R.; Shaw, J.] Univ Massachusetts, Amherst, MA 01003 USA. [Fedotov, G.; Ishkhanov, B. S.; Isupov, E. L.; Mokeev, V.; Osipenko, M.; Sharov, D.; Shvedunov, N. V.] Moscow MV Lomonosov State Univ, Gen Nucl Phys Inst, RU-119899 Moscow, Russia. [Calarco, J. R.; Gavalian, G.; Hersman, F. W.; Holtrop, M.; Lee, T.; Protopopescu, D.; Zana, L.] Univ New Hampshire, Durham, NH 03824 USA. [Khandaker, M.; Salgado, C.] Norflok State Univ, Norfolk, VA 23504 USA. [Carman, D. S.; Hicks, K.; Keller, D.; Mibe, T.; Mutchler, G. S.; Niculescu, G.; Tkabladze, A.] Ohio Univ, Athens, OH 45701 USA. [Amaryan, M. J.; Bagdasaryan, H.; Bektasoglu, M.; Bultmann, S.; Careccia, S. L.; Dharmawardane, K. V.; Dodge, G. E.; Forest, T. A.; Gavalian, G.; Guler, N.; Hyde-Wright, C. E.; Juengst, H. G.; Kalantarians, N.; Klein, A.; Klimenko, A. V.; Kuhn, J.; Lachniet, J.; Niroula, M. R.; Niyazov, R. A.; Qin, L. M.; Sabatie, F.; Tkachenko, S.; Weinstein, L. B.; Yun, J.; Zhang, J.] Old Dominion Univ, Norfolk, VA 23529 USA. [Denizli, H.; Dytman, S.; Kim, K. Y.; Mehrabyan, S.; Mueller, J.] Univ Pittsburgh, Pittsburgh, PA 15260 USA. [Biselli, A. S.; Cummings, J. P.; Klusman, M.; Kubarovsky, V.; Kuhn, J.; Li, Ji; Stoler, P.; Ungaro, M.] Rensselaer Polytech Inst, Troy, NY 12180 USA. [Adams, G.; Bonner, B. E.; Mattione, P.; Mutchler, G. S.] Rice Univ, Houston, TX 77005 USA. [Gilfoyle, G. P.; Rubin, P. D.; Todor, L.; Vineyard, M. F.] Univ Richmond, Richmond, VA 23173 USA. [Baltzell, N. A.; Cazes, A.; Djalali, C.; Dzyubak, O. P.; Gothe, R. W.; Graham, L.; Guillo, M.; Langheinrich, J.; Lu, H. Y.; Nasseripour, R.; Preedom, B. M.; Strauch, S.; Tedeschi, D. J.; Tur, C.; Wood, M. H.; Zhao, Z. W.] Univ S Carolina, Columbia, SC 29208 USA. TRIUMF, Vancouver, BC V6T 2A3, Canada. [Vineyard, M. F.] Union Coll, Schenectady, NY 12308 USA. [Jenkins, D.; Santoro, J. P.] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA. [Minehart, R.; Smith, L. C.; Joo, K.; Crabb, D.; Fatemi, R.; Pierce, J.; Pocanic, D.; Prok, Y.] Univ Virginia, Charlottesville, VA 22901 USA. [Baillie, N.; Butuceanu, C.; Egiyan, H.; Funsten, H.; Griffioen, K. A.] Coll William & Mary, Williamsburg, VA 23187 USA. [Aznauryan, I. G.; Asryan, G.; Bagdasaryan, H.; Dashyan, N.; Egiyan, K. S.; Gevorgyan, N.; Hakobyan, H.] Yerevan Phys Inst, Yerevan 375036, Armenia. RP Park, K (reprint author), Univ S Carolina, Columbia, SC 29208 USA. RI Schumacher, Reinhard/K-6455-2013; Meyer, Curtis/L-3488-2014; Ireland, David/E-8618-2010; Bektasoglu, Mehmet/A-2074-2012; Lu, Haiyun/B-4083-2012; Protopopescu, Dan/D-5645-2012; riccardi, gabriele/A-9269-2012; Zana, Lorenzo/H-3032-2012; Isupov, Evgeny/J-2976-2012; Ishkhanov, Boris/E-1431-2012; Zhao, Bo/J-6819-2012; Brooks, William/C-8636-2013; Kuleshov, Sergey/D-9940-2013; Sabatie, Franck/K-9066-2015; Osipenko, Mikhail/N-8292-2015; Zhang, Jixie/A-1461-2016 OI Schumacher, Reinhard/0000-0002-3860-1827; Meyer, Curtis/0000-0001-7599-3973; Ireland, David/0000-0001-7713-7011; Zhao, Bo/0000-0003-3171-5335; Brooks, William/0000-0001-6161-3570; Kuleshov, Sergey/0000-0002-3065-326X; Sabatie, Franck/0000-0001-7031-3975; Osipenko, Mikhail/0000-0001-9618-3013; NR 53 TC 52 Z9 52 U1 0 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2008 VL 77 IS 1 AR 015208 DI 10.1103/PhysRevC.77.015208 PG 17 WC Physics, Nuclear SC Physics GA 258JG UT WOS:000252863600047 ER PT J AU Reifarth, R Heil, M Forssen, C Besserer, U Couture, A Dababneh, S Dorr, L Gorres, J Haight, RC Kappeler, F Mengoni, A O'Brien, S Patronis, N Plag, R Rundberg, RS Wiescher, M Wilhelmy, JB AF Reifarth, R. Heil, M. Forssen, C. Besserer, U. Couture, A. Dababneh, S. Doerr, L. Gorres, J. Haight, R. C. Kaeppeler, F. Mengoni, A. O'Brien, S. Patronis, N. Plag, R. Rundberg, R. S. Wiescher, M. Wilhelmy, J. B. TI The (14)C(n, gamma) cross section between 10 keV and 1 MeV SO PHYSICAL REVIEW C LA English DT Article ID NEUTRON DIFFUSION; HEAVY-ELEMENTS; NUCLEOSYNTHESIS; NUCLEAR; ISOTOPES; STANDARD; LIGHT; RATES; DECAY; C-15 AB The neutron capture cross section of (14)C is of relevance for several nucleosynthesis scenarios such as inhomogeneous Big Bang models, neutron induced CNO cycles, and neutrino driven wind models for the r process. The (14)C(n,gamma) reaction is also important for the validation of the Coulomb dissociation method, where the (n,gamma) cross section can be indirectly obtained via the time-reversed process. So far, the example of (14)C is the only case with neutrons where both, direct measurement and indirect Coulomb dissociation, have been applied. Unfortunately, the interpretation is obscured by discrepancies between several experiments and theory. Therefore, we report on new direct measurements of the (14)C(n,gamma) reaction with neutron energies ranging from 20 to 800 keV. C1 [Reifarth, R.; Haight, R. C.; Rundberg, R. S.; Wilhelmy, J. B.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Heil, M.; Besserer, U.; Dababneh, S.; Doerr, L.; Kaeppeler, F.; Plag, R.] Forschungszentrum Karlsruhe, Inst Kernphys, D-76021 Karlsruhe, Germany. [Forssen, C.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Forssen, C.] Chalmers, S-41296 Gothenburg, Sweden. [Gorres, J.; O'Brien, S.; Wiescher, M.] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. [Mengoni, A.] CERN, CH-1211 Geneva, Switzerland. [Patronis, N.] Univ Ioannina, Dept Phys, Nucl Phys Lab, GR-45110 Ioannina, Greece. RP Reifarth, R (reprint author), GSI Darmstadt, Planckstr 1, D-64291 Darmstadt, Germany. RI Forssen, Christian/C-6093-2008; Dababneh, Saed/E-7281-2017; Mengoni, Alberto/I-1497-2012 OI Forssen, Christian/0000-0003-3458-0480; Dababneh, Saed/0000-0002-7376-1084; Mengoni, Alberto/0000-0002-2537-0038 NR 40 TC 27 Z9 28 U1 0 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2008 VL 77 IS 1 AR 015804 DI 10.1103/PhysRevC.77.015804 PG 8 WC Physics, Nuclear SC Physics GA 258JG UT WOS:000252863600054 ER PT J AU Schunck, N Egido, JL AF Schunck, N. Egido, J. L. TI Continuum and symmetry-conserving effects in drip-line nuclei using finite-range forces SO PHYSICAL REVIEW C LA English DT Article ID FOCK-BOGOLYUBOV EQUATIONS; RESONANT STATES; EXPANSIONS AB We report the first calculations of nuclear properties near the drip lines using the spherical Hartree-Fock-Bogoliubov mean-field theory with a finite-range force supplemented by continuum and particle-number projection effects. Calculations were carried out in a basis made of the eigenstates of a Woods-Saxon potential computed in a box, thereby guaranteeing that continuum effects were properly taken into account. Projection of the self-consistent solutions on good particle number was carried out after variation, and an approximation of the variation after projection result was used. We give the position of the drip lines and examine neutron densities in neutron-rich nuclei. We discuss the sensitivity of nuclear observables upon continuum and particle-number restoration effects. C1 [Schunck, N.; Egido, J. L.] Univ Autonoma Madrid, Dept Fis Teor, E-28049 Madrid, Spain. [Schunck, N.] Univ Tennessee, Div Phys, Knoxville, TN 37996 USA. [Schunck, N.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Schunck, N (reprint author), Univ Autonoma Madrid, Dept Fis Teor, E-28049 Madrid, Spain. RI Egido, J. Luis/F-4921-2017; OI Egido, J. Luis/0000-0002-8292-6127; Schunck, Nicolas/0000-0002-9203-6849 NR 31 TC 13 Z9 13 U1 0 U2 6 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD JAN PY 2008 VL 77 IS 1 AR 011301 DI 10.1103/PhysRevC.77.011301 PG 5 WC Physics, Nuclear SC Physics GA 258JG UT WOS:000252863600001 ER PT J AU Aaltonen, T Adelman, J Akimoto, T Albrow, MG Gonzalez, B Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Aoki, M Apollinari, G Apresyan, A Arisawa, T Artikov, A Ashmanskas, W Attal, A Aurisano, A Azfar, F Azzi-Bacchetta, P Azzurri, P Bacchetta, N Badgett, W Barbaro-Galtieri, A Barnes, VE Barnett, BA Baroiant, S Bartsch, V Bauer, G Beauchemin, PH Bedeschi, F Bednar, P Behari, S Bellettini, G Bellinger, J Belloni, A Benjamin, D Beretvas, A Beringer, J Berry, T Bhatti, A Binkley, M Bisello, D Bizjak, I Blair, RE Blocker, C Blumenfeld, B Bocci, A Bodek, A Boisvert, V Bolla, G Bolshov, A Bortoletto, D Boudreau, J Boveia, A Brau, B Bridgeman, A Brigliadori, L Bromberg, C Brubaker, E Budagov, J Budd, HS Budd, S Burkett, K Busetto, G Bussey, P Buzatu, A Byrum, KL Cabrera, S Campanelli, M Campbell, M Canelli, F Canepa, A Carlsmith, D Carosi, R Carrillo, S Carron, S Casal, B Casarsa, M Castro, A Catastini, P Cauz, D Cavalli-Sforza, M Cerri, A Cerrito, L Chang, SH Chen, YC Chertok, M Chiarelli, G Chlachidze, G Chlebana, F Cho, K Chokheli, D Chou, JP Choudalakis, G Chuang, SH Chung, K Chung, WH Chung, YS Ciobanu, CI Ciocci, MA Clark, A Clark, D Compostella, G Convery, ME Conway, J Cooper, B Copic, K Cordelli, M Cortiana, G Crescioli, F Almenar, CC Cuevas, J Culbertson, R Cully, JC Dagenhart, D Datta, M Davies, T De Barbaro, P De Cecco, S Deisher, A De Lentdecker, G De Lorenzo, G Dell'Orso, M Demortier, L Deng, J Deninno, M De Pedis, D Derwent, PF Di Giovanni, GP Dionisi, C Di Ruzza, B Dittmann, JR D'Onofrio, M Donati, S Dong, P Donini, J Dorigo, T Dube, S Efron, J Erbacher, R Errede, D Errede, S Eusebi, R Fang, HC Farrington, S Fedorko, WT Feild, RG Feindt, M Fernandez, JP Ferrazza, C Field, R Flanagan, G Forrest, R Forrester, S Franklin, M Freeman, JC Furic, I Gallinaro, M Galyardt, J Garberson, F Garcia, JE Garfinkel, AF Gerberich, H Gerdes, D Giagu, S Giakoumopolou, V Giannetti, P Gibson, K Gimmell, JL Ginsburg, CM Giokaris, N Giordani, M Giromini, P Giunta, M Glagolev, V Glenzinski, D Gold, M Goldschmidt, N Golossanov, A Gomez, G Gomez-Ceballos, G Goncharov, M Gonzalez, O Gorelov, I Goshaw, AT Goulianos, K Gresele, A Grinstein, S Grosso-Pilcher, C Group, RC Grundler, U Da Costa, JG Gunay-Unalan, Z Haber, C Hahn, K Hahn, SR Halkiadakis, E Hamilton, A Han, BY Han, JY Handler, R Happacher, F Hara, K Hare, D Hare, M Harper, S Harr, RF Harris, RM Hartz, M Hatakeyama, K Hauser, J Hays, C Heck, M Heijboer, A Heinemann, B Heinrich, J Henderson, C Herndon, M Heuser, J Hewamanage, S Hidas, D Hill, CS Hirschbuehl, D Hocker, A Hou, S Houlden, M Hsu, SC Huffman, BT Hughes, RE Husemann, U Huston, J Incandela, J Introzzi, G Iori, M Ivanov, A Iyutin, B James, E Jayatilaka, B Jeans, D Jeon, EJ Jindariani, S Johnson, W Jones, M Joo, KK Jun, SY Jung, JE Junk, TR Kamon, T Kar, D Karchin, PE Kato, Y Kephart, R Kerzel, U Khotilovich, V Kilminster, B Kim, DH Kim, HS Kim, JE Kim, MJ Kim, SB Kim, SH Kim, YK Kimura, N Kirsch, L Klimenko, S Klute, M Knuteson, B Ko, BR Koay, SA Kondo, K Kong, DJ Konigsberg, J Korytov, A Kotwal, AV Kraus, J Kreps, M Kroll, J Krumnack, N Kruse, M Krutelyov, V Kubo, T Kuhlmann, SE Kuhr, T Kulkarni, NP Kusakabe, Y Kwang, S Laasanen, AT Lai, S Lami, S Lammel, S Lancaster, M Lander, RL Lannon, K Lath, A Latino, G Lazzizzera, I LeCompte, T Lee, J Lee, J Lee, YJ Lee, SW Lefevre, R Leonardo, N Leone, S Levy, S Lewis, JD Lin, C Lin, CS Linacre, J Lindgren, M Lipeles, E Lister, A Litvintsev, DO Liu, T Lockyer, NS Loginov, A Loreti, M Lovas, L Lu, RS Lucchesi, D Lueck, J Luci, C Lujan, P Lukens, P Lungu, G Lyons, L Lys, J Lysak, R Lytken, E Mack, P MacQueen, D Madrak, R Maeshima, K Makhoul, K Maki, T Maksimovic, P Malde, S Malik, S Manca, G Manousakis, A Margaroli, F Marino, C Marino, CP Martin, A Martin, M Martin, V Martinez, M Martinez-Ballarin, R Maruyama, T Mastrandrea, P Masubuchi, 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Seiya, Y. Semenov, A. Sexton-Kennedy, L. Sfyria, A. Shalhout, S. Z. Shapiro, M. D. Shears, T. Shepard, P. F. Sherman, D. Shimojima, M. Shochet, M. Shon, Y. Shreyber, I. Sidoti, A. Sinervo, P. Sisakyan, A. Slaughter, A. J. Slaunwhite, J. Sliwa, K. Smith, J. R. Snider, F. D. Snihur, R. Soderberg, M. Soha, A. Somalwar, S. Sorin, V. Spalding, J. Spinella, F. Spreitzer, T. Squillacioti, P. Stanitzki, M. Denis, R. St. Stelzer, B. Stelzer-Chilton, O. Stentz, D. Strologas, J. Stuart, D. Suh, J. S. Sukhanov, A. Sun, H. Suslov, I. Suzuki, T. Taffard, A. Takashima, R. Takeuchi, Y. Tanaka, R. Tecchio, M. Teng, P. K. Terashi, K. Thom, J. Thompson, A. S. Thompson, G. A. Thomson, E. Tipton, P. Tiwari, V. Tkaczyk, S. Toback, D. Tokar, S. Tollefson, K. Tomura, T. Tonelli, D. Torre, S. Torretta, D. Tourneur, S. Trischuk, W. Tu, Y. Turini, N. Ukegawa, F. Uozumi, S. Vallecorsa, S. Van Remortel, N. Varganov, A. Vataga, E. Vazquez, F. Velev, G. Vellidis, C. Veszpremi, V. Vidal, M. Vidal, R. Vila, I. Vilar, R. Vine, T. Vogel, M. Volobouev, I. Volpi, G. Rthwein, F. Wu Wagner, P. Wagner, R. G. Wagner, R. L. Wagner-Kuhr, J. Wagner, W. Wakisaka, T. Wallny, R. Wang, S. M. Warburton, A. Waters, D. Weinberger, M. Wester, W. C., III Whitehouse, B. Whiteson, D. Wicklund, A. B. Wicklund, E. Williams, G. Williams, H. H. Wilson, P. Winer, B. L. Wittich, P. Wolbers, S. Wolfe, C. Wright, T. Wu, X. Wynne, S. M. Yagil, A. Yamamoto, K. Yamaoka, J. Yamashita, T. Yang, C. Yang, U. K. Yang, Y. C. Yao, W. M. Yeh, G. P. Yoh, J. Yorita, K. Yoshida, T. Yu, G. B. Yu, I. Yu, S. S. Yun, J. C. Zanello, L. Zanetti, A. Zaw, I. Zhang, X. Zheng, Y. Zucchelli, S. TI Measurement of the cross section for W-boson production in association with jets in p(p)over-bar collisions at root s=1.96 TeV SO PHYSICAL REVIEW D LA English DT Article ID PHYSICS AB We present a measurement of the cross section for W-boson production in association with jets in p (p) over bar collisions at root s =1.96 TeV. The analysis uses a data sample corresponding to an integrated luminosity of 320 pb(-1) collected with the CDF II detector. W bosons are identified in their electron decay channel and jets are reconstructed using a cone algorithm. For each W+>= n-jet sample (n=1-4) we measure the differential cross section d sigma(p (p) over bar -> W+>= n-jet)/dE(T)(nth-jet)xB(W -> e nu) with respect to the transverse energy E-T of the nth-highest E-T jet above 20 GeV, and the total cross section sigma(p (p) over bar -> W+>= n-jet;E-T(nth-jet)> 25 GeV)xB(W -> e nu), for a restricted W -> e nu decay phase space. The cross sections, corrected for all detector effects, can be directly compared to particle level W+jet(s) predictions. We present here comparisons to leading order and next-to-leading order predictions. C1 [Aaltonen, T.] Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland. [Aaltonen, T.] Helsinki Inst Phys, FIN-00014 Helsinki, Finland. [Chen, Y. 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[Aoki, M.; Bridgeman, A.; Budd, S.; Ciobanu, C. I.; Errede, D.; Errede, S.; Gerberich, H.; Grundler, U.; Junk, T. R.; Kraus, J.; Kreps, M.; Neubauer, M. S.; Norniella, O.; Pitts, K.; Rogers, E.; Thompson, G. A.; Zhang, X.] Univ Illinois, Urbana, IL 61801 USA. [Blumenfeld, B.; Martin, M.; Mumford, R.] Johns Hopkins Univ, Baltimore, MD 21218 USA. [Feindt, M.; Heck, M.; Heuser, J.; Hirschbuehl, D.; Kerzel, U.; Kreps, M.; Kuhr, T.; Lueck, J.; Mack, P.; Marino, C.; Milnik, M.; Muller, Th.; Papaikonomou, A.; Richter, S.; Scheidle, T.] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany. [Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Karchin, P. E.; Kim, D. H.; Kim, H. S.; Kim, J. E.; Kong, D. J.; Moon, C. S.; Suh, J. S.; Yang, Y. C.; Yu, I.; Yu, S. S.] Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea. [Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Karchin, P. E.; Kim, D. H.; Kim, H. S.; Kim, J. E.; Kong, D. J.; Moon, C. 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E.; Giakoumopolou, V.; Giannetti, P.; Introzzi, G.; Lami, S.; Latino, G.; Menzione, A.; Morello, M.; Pagliarone, C.; Piacentino, G.; Punzi, G.; Ristori, L.; Scribano, A.; Scuri, F.; Sidoti, A.; Spinella, F.; Squillacioti, P.; Vellidis, C.; Volpi, G.] Univ Pisa, Ist Nazl Fis Nucl Pisa, I-56127 Pisa, Italy. [Bedeschi, F.; Bellettini, G.; Canepa, A.; Carosi, R.; Catastini, P.; Chiarelli, G.; Crescioli, F.; Ferrazza, C.; Garcia, J. E.; Giakoumopolou, V.; Giannetti, P.; Introzzi, G.; Lami, S.; Latino, G.; Menzione, A.; Morello, M.; Pagliarone, C.; Piacentino, G.; Punzi, G.; Ristori, L.; Scribano, A.; Scuri, F.; Sidoti, A.; Spinella, F.; Squillacioti, P.; Vellidis, C.; Volpi, G.] Scuola Normale Super Pisa, I-56127 Pisa, Italy. [Anastassov, A.; Boudreau, J.; Gibson, K.; Hartz, M.; Rahaman, A.; Shepard, P. F.] Univ Pittsburgh, Pittsburgh, PA 15260 USA. [Barnes, V. E.; Bolla, G.; Bortoletto, D.; Flanagan, G.; Jones, M.; Laasanen, A. 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RI Ruiz, Alberto/E-4473-2011; Warburton, Andreas/N-8028-2013; Robson, Aidan/G-1087-2011; Kim, Soo-Bong/B-7061-2014; De Cecco, Sandro/B-1016-2012; Azzi, Patrizia/H-5404-2012; Lysak, Roman/H-2995-2014; Moon, Chang-Seong/J-3619-2014; manca, giulia/I-9264-2012; Amerio, Silvia/J-4605-2012; messina, andrea/C-2753-2013; Annovi, Alberto/G-6028-2012; Ivanov, Andrew/A-7982-2013; Scodellaro, Luca/K-9091-2014; Paulini, Manfred/N-7794-2014; Russ, James/P-3092-2014; Lazzizzera, Ignazio/E-9678-2015; vilar, rocio/P-8480-2014; Cabrera Urban, Susana/H-1376-2015; Garcia, Jose /H-6339-2015; ciocci, maria agnese /I-2153-2015; Cavalli-Sforza, Matteo/H-7102-2015; Introzzi, Gianluca/K-2497-2015; Gorelov, Igor/J-9010-2015; Prokoshin, Fedor/E-2795-2012; Leonardo, Nuno/M-6940-2016; Canelli, Florencia/O-9693-2016 OI Ruiz, Alberto/0000-0002-3639-0368; Warburton, Andreas/0000-0002-2298-7315; Azzi, Patrizia/0000-0002-3129-828X; Moon, Chang-Seong/0000-0001-8229-7829; Annovi, Alberto/0000-0002-4649-4398; Ivanov, Andrew/0000-0002-9270-5643; Scodellaro, Luca/0000-0002-4974-8330; Paulini, Manfred/0000-0002-6714-5787; Russ, James/0000-0001-9856-9155; Lazzizzera, Ignazio/0000-0001-5092-7531; ciocci, maria agnese /0000-0003-0002-5462; Introzzi, Gianluca/0000-0002-1314-2580; Gorelov, Igor/0000-0001-5570-0133; Prokoshin, Fedor/0000-0001-6389-5399; Leonardo, Nuno/0000-0002-9746-4594; Canelli, Florencia/0000-0001-6361-2117 NR 33 TC 59 Z9 59 U1 1 U2 8 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 EI 1550-2368 J9 PHYS REV D JI Phys. 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Zverev, E. G. TI Measurement of the muon charge asymmetry from W boson decays SO PHYSICAL REVIEW D LA English DT Article ID PARTON DISTRIBUTIONS; P(P)OVER-BAR COLLISIONS; COLLIDERS AB We present a measurement of the muon charge asymmetry from W boson decays using 0.3 fb(-1) of data collected at root s =1.96 GeV between 2002 and 2004 with the D0 detector at the Fermilab Tevatron (p) over bar Collider. We compare our findings with expectations from next-to-leading-order calculations performed using the CTEQ6.1M and MRST04 NLO parton distribution functions. Our findings can be used to constrain future parton distribution function fits. C1 [Abazov, V. M.; Alexeev, G. D.; Kalinin, A. M.; Kharzheev, Y. M.; Malyshev, V. L.; Tokmenin, V. V.; Vertogradov, L. S.; Yatsunenko, Y. A.] Dubna Joint Nucl Res Inst, Dubna 141980, Russia. [Piegaia, R.; Tanasijczuk, A.] Univ Buenos Aires, Buenos Aires, DF, Argentina. [Alves, G. A.; Barreto, J.; da Motta, H.; Maciel, A. K. A.; Pol, M. -E.; Rangel, M. 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V.; Maravin, Y.; Onoprienko, D.; Shamim, M.; Von Toerne, E.] Kansas State Univ, Manhattan, KS 66506 USA. [Arov, M.; Greenwood, Z. D.; Kalk, J. M.; Steele, J.; Wobisch, M.] Louisiana Tech Univ, Ruston, LA 71272 USA. [Baden, A.; Eno, S.; Hadley, N. J.; Jarvis, C.; Kunori, S.; Toole, T.; Wang, L.; Wetstein, M.; Yan, M.] Univ Maryland, College Pk, MD 20742 USA. [Boline, D.; Butler, J. M.; Cho, D. K.; Das, A.; Heintz, U.; Jabeen, S.; Kasper, J.] Boston Univ, Boston, MA 02215 USA. [Alverson, G.; Barberis, E.; Harrington, R.; Hesketh, G.; Reucroft, S.; Wood, D. R.] Northeastern Univ, Boston, MA 02115 USA. [Alton, A.; De la Cruz-Burelo, E.; Degenhardt, J. D.; Magerkurth, A.; Neal, H. A.; Qian, J.; Strandberg, J.; Zhou, B.] Univ Michigan, Ann Arbor, MI 48109 USA. [Abolins, M.; Benitez, J. A.; Brock, R.; Dyer, J.; Edmunds, D.; Hall, I.; Hauser, R.; Kalk, J. R.; Linnemann, J.; Piper, J.; Pope, B. G.; Schwienhorst, R.; Unalan, R.] Michigan State Univ, E Lansing, MI 48824 USA. [Melnitchouk, A.; Quinn, B.] Univ Mississippi, University, MS 38677 USA. [Bloom, K.; Claes, D.; Dominguez, A.; Eads, M.; Malik, S.; Snow, G. R.; Voutilainen, M.] Univ Nebraska, Lincoln, NE 68588 USA. [Haley, J.; Schwartzman, A.; Tully, C.; Wagner, R.] Princeton Univ, Princeton, NJ 08544 USA. [Iashvili, I.; Kharchilava, A.; Kumar, A.; Strang, M. A.] SUNY Buffalo, Buffalo, NY 14260 USA. [Brooijmans, G.; Haas, A.; Johnson, C.; Katsanos, I.; Khatidze, D.; Lammers, S.; Mitrevski, J.; Mulhearn, M.; Parsons, J.; Tuts, P. M.; Zivkovic, L.] Columbia Univ, New York, NY 10027 USA. [Begel, M.; Cammin, J.; Demina, R.; Ferbel, T.; Garcia, C.; Ginther, G.; Harel, A.; Park, S. -J.; Slattery, P.; Zielinski, M.] Univ Rochester, Rochester, NY 14627 USA. [Dong, H.; Grannis, P. D.; Guo, J.; Guo, F.; Herner, K.; Hobbs, J. D.; Hu, Y.; McCarthy, R.; Rijssenbeek, M.; Schamberger, R. D.; Strauss, E.; Tsybychev, D.; Zhu, J.] SUNY Stony Brook, Stony Brook, NY 11794 USA. [Evdokimov, A.; Kahn, S.; Patwa, A.; Protopopescu, S.; Snyder, S.; Yip, K.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Snow, J.] Langston Univ, Langston, OK 73050 USA. [Abbott, B.; Gutierrez, P.; Hossain, S.; Jain, S.; Kopal, M.; Rominsky, M.; Severini, H.; Skubic, P.; Strauss, M.] Univ Oklahoma, Norman, OK 73019 USA. [Khanov, A.; Rizatdinova, F.] Oklahoma State Univ, Stillwater, OK 74078 USA. [Bose, T.; Casey, B. C. K.; Christofek, L.; Cutts, D.; Enari, Y.; Landsberg, G.; Narain, M.; Pangilinan, M.; Partridge, R.; Xie, Y.; Yoo, H. D.] Brown Univ, Providence, RI 02912 USA. [Brandt, A.; De, K.; Kaushik, V.; Li, J.; Sosebee, M.; Spurlock, B.; White, A.; Yu, J.] Univ Texas Arlington, Arlington, TX 76019 USA. [Kehoe, R.; Renkel, P.] So Methodist Univ, Dallas, TX 75275 USA. [Bargassa, P.; Cooke, M.; Corcoran, M.; Mackin, D.; Padley, P.; Pawloski, G.] Rice Univ, Houston, TX 77005 USA. [Brown, D.; Buehler, M.; Hirosky, R.] Univ Virginia, Charlottesville, VA 22901 USA. [Burnett, T. H.; Gadfort, T.; Garcia-Bellido, A.; Lubatti, H. J.; Watts, G.; Zhao, T.] Univ Washington, Seattle, WA 98195 USA. RP Abazov, VM (reprint author), Dubna Joint Nucl Res Inst, Dubna 141980, Russia. RI Bargassa, Pedrame/O-2417-2016; Juste, Aurelio/I-2531-2015; Fisher, Wade/N-4491-2013; Ancu, Lucian Stefan/F-1812-2010; Alves, Gilvan/C-4007-2013; Deliot, Frederic/F-3321-2014; Sharyy, Viatcheslav/F-9057-2014; Kupco, Alexander/G-9713-2014; Christoudias, Theodoros/E-7305-2015; KIM, Tae Jeong/P-7848-2015; Guo, Jun/O-5202-2015; Sznajder, Andre/L-1621-2016; Li, Liang/O-1107-2015; Nomerotski, Andrei/A-5169-2010; Shivpuri, R K/A-5848-2010; Gutierrez, Phillip/C-1161-2011; Dudko, Lev/D-7127-2012; Leflat, Alexander/D-7284-2012; Novaes, Sergio/D-3532-2012; Mercadante, Pedro/K-1918-2012; Mundim, Luiz/A-1291-2012; Yip, Kin/D-6860-2013; De, Kaushik/N-1953-2013; Perfilov, Maxim/E-1064-2012; Merkin, Mikhail/D-6809-2012 OI Malik, Sudhir/0000-0002-6356-2655; Blekman, Freya/0000-0002-7366-7098; Blazey, Gerald/0000-0002-7435-5758; Evans, Harold/0000-0003-2183-3127; Beuselinck, Raymond/0000-0003-2613-7446; Weber, Gernot/0000-0003-4199-1640; Heinson, Ann/0000-0003-4209-6146; grannis, paul/0000-0003-4692-2142; Qian, Jianming/0000-0003-4813-8167; Belanger-Champagne, Camille/0000-0003-2368-2617; Begel, Michael/0000-0002-1634-4399; Haas, Andrew/0000-0002-4832-0455; Weber, Michele/0000-0002-2770-9031; Grohsjean, Alexander/0000-0003-0748-8494; Melnychuk, Oleksandr/0000-0002-2089-8685; Bassler, Ursula/0000-0002-9041-3057; Filthaut, Frank/0000-0003-3338-2247; Naumann, Axel/0000-0002-4725-0766; Bertram, Iain/0000-0003-4073-4941; Madaras, Ronald/0000-0001-7399-2993; Sawyer, Lee/0000-0001-8295-0605; Bargassa, Pedrame/0000-0001-8612-3332; Hedin, David/0000-0001-9984-215X; Wahl, Horst/0000-0002-1345-0401; Juste, Aurelio/0000-0002-1558-3291; de Jong, Sijbrand/0000-0002-3120-3367; Landsberg, Greg/0000-0002-4184-9380; Blessing, Susan/0000-0002-4455-7279; Gershtein, Yuri/0000-0002-4871-5449; Duperrin, Arnaud/0000-0002-5789-9825; Hoeneisen, Bruce/0000-0002-6059-4256; Ancu, Lucian Stefan/0000-0001-5068-6723; Sharyy, Viatcheslav/0000-0002-7161-2616; Christoudias, Theodoros/0000-0001-9050-3880; KIM, Tae Jeong/0000-0001-8336-2434; Guo, Jun/0000-0001-8125-9433; Sznajder, Andre/0000-0001-6998-1108; Li, Liang/0000-0001-6411-6107; Bean, Alice/0000-0001-5967-8674; Dudko, Lev/0000-0002-4462-3192; Novaes, Sergio/0000-0003-0471-8549; Mundim, Luiz/0000-0001-9964-7805; Yip, Kin/0000-0002-8576-4311; De, Kaushik/0000-0002-5647-4489; NR 17 TC 43 Z9 43 U1 0 U2 6 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2008 VL 77 IS 1 AR 011106 DI 10.1103/PhysRevD.77.011106 PG 8 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 258JH UT WOS:000252863700006 ER PT J AU Afanasev, A Strikman, M Weiss, C AF Afanasev, A. Strikman, M. Weiss, C. TI Transverse target spin asymmetry in inclusive DIS with two-photon exchange SO PHYSICAL REVIEW D LA English DT Article ID ELECTRON-PROTON SCATTERING; PRECISION-MEASUREMENT; INELASTIC SCATTERING; CONSTITUENT QUARKS; SUM-RULES; POLARIZATION; ELECTROPRODUCTION; INSTANTONS AB We study the transverse target spin dependence of the cross section for inclusive electron-nucleon scattering with unpolarized beam. Such dependence is absent in the one-photon exchange approximation (Christ-Lee theorem) and arises only in higher orders of the QED expansion, from the interference of one-photon and absorptive two-photon exchange amplitudes as well as from real photon emission (bremsstrahlung). We demonstrate that the transverse spin-dependent two-photon exchange cross section is free of QED infrared and collinear divergences. We argue that in DIS kinematics the transverse spin dependence should be governed by a "partonlike" mechanism in which the two-photon exchange couples mainly to a single quark. We calculate the normal spin asymmetry in an approximation where the dominant contribution arises from quark-helicity flip due to interactions with nonperturbative vacuum fields (constituent quark picture) and is proportional to the quark transversity distribution in the nucleon. Such helicity-flip processes are not significantly Sudakov-suppressed if the infrared scale for gluon emission in the photon-quark subprocess is of the order of the chiral symmetry breaking scale, mu(2)(chiral)>Lambda(2)(QCD). We estimate the asymmetry in the kinematics of the planned Jefferson Lab Hall A experiment to be of the order 10(-4), with different sign for proton and neutron. We also comment on the spin dependence in the limit of soft high-energy scattering. C1 [Afanasev, A.] Hampton Univ, Dept Phys, Hampton, VA 23668 USA. [Afanasev, A.; Weiss, C.] Ctr Theory, Jefferson Lab, Newport News, VA 23606 USA. [Strikman, M.] Penn State Univ, Dept Phys, University Pk, PA 16802 USA. RP Afanasev, A (reprint author), Hampton Univ, Dept Phys, Hampton, VA 23668 USA. OI Afanasev, Andrei/0000-0003-0679-3307 NR 44 TC 19 Z9 19 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2008 VL 77 IS 1 AR 014028 DI 10.1103/PhysRevD.77.014028 PG 23 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 258JH UT WOS:000252863700050 ER PT J AU Agashe, K Belyaev, A Krupovnickas, T Perez, G Virzi, J AF Agashe, Kaustubh Belyaev, Alexander Krupovnickas, Tadas Perez, Gilad Virzi, Joseph TI CERN LHC signals from warped extra dimensions SO PHYSICAL REVIEW D LA English DT Article ID FORWARD-BACKWARD ASYMMETRIES; PRODUCTION NEAR-THRESHOLD; RANDALL-SUNDRUM MODEL; QUARK PAIR PRODUCTION; TOP-QUARK; GAUGE BOSONS; FLAVOR VIOLATION; SPIN CORRELATIONS; HADRON COLLIDERS; DECAY AB We study production of Kaluza-Klein (KK) gluons at the Large Hadron Collider (LHC) in the framework of a warped extra dimension with the standard model fields propagating in the bulk. We show that the detection of the KK gluon is challenging since its production is suppressed by small couplings to the proton's constituents. Moreover, the KK gluon decays mostly to top pairs due to an enhanced coupling and hence is broad. Nevertheless, we demonstrate that for M(KKG) less than or similar to 4 TeV, 100 fb(-1) of data at the LHC can provide discovery of the KK gluon. We utilize a sizable left-right polarization asymmetry from the KK gluon resonance to maximize the signal significance, and we explore the novel feature of extremely highly energetic "top-jets." We briefly discuss how the detection of electroweak gauge KK states (Z/W) faces a similar challenge since their leptonic decays (golden modes) are suppressed. Our analysis suggests that other frameworks, for example, little Higgs, which rely on UV completion via strong dynamics might face similar challenges, namely, (1) suppressed production rates for the new particles (such as Z'), due to their "light-fermion-phobic" nature, and (2) difficulties in detection since the new particles are broad and decay predominantly to third generation quarks and longitudinal gauge bosons. C1 [Agashe, Kaustubh] Syracuse Univ, Dept Phys, Syracuse, NY 13244 USA. [Belyaev, Alexander] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA. [Krupovnickas, Tadas] Brookhaven Natl Lab, Upton, NY 11973 USA. [Perez, Gilad] SUNY Stony Brook, CN Yang Inst Theoret Phys, Stony Brook, NY 11794 USA. [Virzi, Joseph] Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA 94720 USA. RP Agashe, K (reprint author), Syracuse Univ, Dept Phys, Syracuse, NY 13244 USA. RI Belyaev, Alexander/F-6637-2015 OI Belyaev, Alexander/0000-0002-1733-4408 NR 88 TC 221 Z9 222 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2008 VL 77 IS 1 AR 015003 DI 10.1103/PhysRevD.77.015003 PG 11 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 258JH UT WOS:000252863700078 ER PT J AU Antonio, DJ Bowler, KC Boyle, PA Christ, NH Clark, MA Cohen, SD Dawson, C Hart, A Joo, B Jung, C Kenway, RD Li, S Lin, M Mawhinney, RD Maynard, CM Ohta, S Tweedie, RJ Yamaguchi, A AF Antonio, David J. Bowler, Kenneth C. Boyle, Peter A. Christ, Norman H. Clark, Michael A. Cohen, Saul D. Dawson, Chris Hart, Alistair Joo, Balint Jung, Chulwoo Kenway, Richard D. Li, Shu Lin, Meifeng Mawhinney, Robert D. Maynard, Christopher M. Ohta, Shigemi Tweedie, Robert J. Yamaguchi, Azusa TI Localization and chiral symmetry in three flavor domain wall QCD SO PHYSICAL REVIEW D LA English DT Article ID LATTICE GAUGE-THEORY; WILSON FERMIONS; DIRAC OPERATOR; U(1) PROBLEM; CONSTRUCTION; PROJECT; OVERLAP; FLOW AB We present results for the dependence of the residual mass of domain wall fermions on the size of the fifth dimension and its relation to the density and localization properties of low-lying eigenvectors of the corresponding Hermitian Wilson Dirac operator in three flavor domain wall QCD. Using the DBW2 and Iwasaki gauge actions, we generate ensembles of configurations with a 16(3) x 32 space-time volume and an extent of 8 in the fifth dimension for the sea quarks. We demonstrate the existence of a regime where the degree of locality, the size of chiral symmetry breaking, and the rate of topology change can be acceptable for inverse lattice spacings a(-1)>= 1.6 GeV, enabling a programme of simulations of 2 + 1 flavor QCD to be conducted safely in this region of parameter space. C1 [Antonio, David J.; Bowler, Kenneth C.; Boyle, Peter A.; Hart, Alistair; Joo, Balint; Kenway, Richard D.; Tweedie, Robert J.] Univ Edinburgh, Sch Phys, SUPA, Edinburgh EH9 3JZ, Midlothian, Scotland. [Christ, Norman H.; Cohen, Saul D.; Li, Shu; Lin, Meifeng; Mawhinney, Robert D.] Columbia Univ, Dept Phys, New York, NY 10027 USA. [Clark, Michael A.] Boston Univ, Ctr Computat Sci, Boston, MA 02215 USA. [Dawson, Chris] Brookhaven Natl Lab, RIKEN BNL, Res Ctr, Upton, NY 11973 USA. [Joo, Balint] Jefferson Lab, Newport News, VA 23606 USA. [Jung, Chulwoo] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. [Maynard, Christopher M.] Univ Edinburgh, Sch Phys, EPCC, Edinburgh EH9 3JZ, Midlothian, Scotland. [Tweedie, Robert J.] KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki 3050801, Japan. [Tweedie, Robert J.] Sokendai Grad Univ Glasgow, Dept Phys, Kanagawa 2400193, Japan. [Yamaguchi, Azusa] Univ Glasgow, Dept Phys & Astron, SUPA, Glasgow G12 8QQ, Lanark, Scotland. RP Antonio, DJ (reprint author), Univ Edinburgh, Sch Phys, SUPA, Edinburgh EH9 3JZ, Midlothian, Scotland. OI Cohen, Saul/0000-0001-6804-3320 NR 56 TC 31 Z9 31 U1 0 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2008 VL 77 IS 1 AR 014509 DI 10.1103/PhysRevD.77.014509 PG 21 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 258JH UT WOS:000252863700069 ER PT J AU Aubert, B Bona, M Boutigny, D Karyotakis, Y Lees, JP Poireau, V Prudent, X Tisserand, V Zghiche, A Tico, JG Grauges, E Lopez, L Palano, A Pappagallo, M Eigen, G Stugu, B Sun, L Abrams, GS Battaglia, M Brown, DN Button-Shafer, J Cahn, RN Groysman, Y Jacobsen, RG Kadyk, JA Kerth, LT Kolomensky, YG Kukartsev, G Pegna, DL Lynch, G Mir, LM Orimoto, TJ Osipenkov, IL Ronan, MT Tackmann, K Tanabe, T Wenzel, WA Sanchez, PDA Hawkes, CM Watson, AT Held, T Koch, H Pelizaeus, M Schroeder, T Steinke, M Walker, D Asgeirsson, DJ Cuhadar-Donszelmann, T Fulsom, BG Hearty, C Mattison, TS McKenna, JA Khan, A Saleem, M Teodorescu, L Blinov, VE Bukin, AD Druzhinin, VP Golubev, VB Onuchin, AP Serednyakov, SI Skovpen, YI Solodov, EP Todyshev, KY Bondioli, M Curry, S Eschrich, I Kirkby, D Lankford, AJ Lund, P Mandelkern, M Martin, EC Stoker, DP Abachi, S Buchanan, C Foulkes, SD Gary, JW Liu, F Long, O Shen, BC Zhang, L Paar, HP Rahatlou, S Sharma, V Berryhill, JW Campagnari, C Cunha, A Dahmes, B Hong, TM Kovalskyi, D Richman, JD Beck, TW Eisner, AM Flacco, CJ Heusch, CA Kroseberg, J Lockman, WS Schalk, T Schumm, BA Seiden, A Wilson, MG Winstrom, LO Chen, E Cheng, CH Fang, F Hitlin, DG Narsky, I Piatenko, T Porter, FC Andreassen, R Mancinelli, G Meadows, BT Mishra, K Sokoloff, MD Blanc, F Bloom, PC Chen, S Ford, WT Hirschauer, JF Kreisel, A Nagel, M Nauenberg, U Olivas, A Smith, JG Ulmer, KA Wagner, SR Zhang, J Gabareen, AM Soffer, A Toki, WH Wilson, RJ Winklmeier, F Altenburg, DD Feltresi, E Hauke, A Jasper, H Merkel, J Petzold, A Spaan, B Wacker, K Klose, V Kobel, MJ Lacker, HM Mader, WF Nogowski, R Schubert, J Schubert, KR Schwierz, R Sundermann, JE Volk, A Bernard, D Bonneaud, GR Latour, E Lombardo, V Thiebaux, C Verderi, M Clark, PJ Gradl, W Muheim, F Playfer, S Robertson, AI Watson, JE Xie, Y Andreotti, M Bettoni, D Bozzi, C Calabrese, R Cecchi, A Cibinetto, G Franchini, P Luppi, E Negrini, M Petrella, A Piemontese, L Prencipe, E Santoro, V Anulli, F Baldini-Ferroli, R Calcaterra, A De Sangro, R Finocchiaro, G Pacetti, S Patteri, P Peruzzi, IM Piccolo, M Rama, M Zallo, A Buzzo, A Contri, R Lo Vetere, M Macri, MM Monge, MR Passaggio, S Patrignani, C Robutti, E Santroni, A Tosi, S Chaisanguanthum, KS Morii, M Wu, J Dubitzky, RS Marks, J Schenk, S Uwer, U Bard, DJ Dauncey, PD Flack, RL Nash, JA Vazquez, WP Tibbetts, M Behera, PK Chai, X Charles, MJ Mallik, U Ziegler, V Cochran, J Crawley, HB Dong, L Eyges, V Meyer, WT Prell, S Rosenberg, EI Rubin, AE Gao, YY Gritsan, AV Guo, ZJ Lae, CK Denig, AG Fritsch, M Schott, G Arnaud, N Bequilleux, J D'Orazio, A Davier, M Grosdidier, G Hocker, A Lepeltier, V Le Diberder, F Lutz, AM Pruvot, S Rodier, S Roudeau, P Schune, MH Serrano, J Sordini, V Stocchi, A Wang, WF Wormser, G Lange, DJ Wright, DM Bingham, I Chavez, CA Forster, IJ Fry, JR Gabathuler, E Gamet, R Hutchcroft, DE Payne, DJ Schofield, KC Touramanis, C Bevan, AJ George, KA Di Lodovico, F Menges, W Sacco, R Cowan, G Flaecher, HU Hopkins, DA Paramesvaran, S Salvatore, F Wren, AC Brown, DN Davis, CL Allison, J Barlow, NR Barlow, RJ Chia, YM Edgar, CL Lafferty, GD West, TJ Yi, JI Anderson, J Chen, C Jawahery, A Roberts, DA Simi, G Tuggle, JM Blaylock, G Dallapiccola, C Hertzbach, SS Li, X Moore, TB Salvati, E Saremi, S Cowan, R Dujmic, D Fisher, PH Koeneke, K Sciolla, G Sekula, SJ Spitznagel, M Taylor, F Yamamoto, RK Zhao, M Zheng, Y Mclachlin, SE Patel, PM Robertson, SH Lazzaro, A Palombo, F Bauer, JM Cremaldi, L Eschenburg, V Godang, R Kroeger, R Sanders, DA Summers, DJ Zhao, HW Brunet, S Cote, D Simard, M Taras, P Viaud, FB Nicholson, H De Nardo, G Fabozzi, F Lista, L Monorchio, D Sciacca, C Baak, MA Raven, G Snoek, HL Jessop, CP Knoepfel, KJ LoSecco, JM Benelli, G Corwin, LA Honscheid, K Kagan, H Kass, R Morris, JP Rahimi, AM Regensburger, JJ Wong, QK Blount, NL Brau, J Frey, R Igonkina, O Kolb, JA Lu, M Rahmat, R Sinev, NB Strom, D Strube, J Torrence, E Gagliardi, N Gaz, A Margoni, M Morandin, M Pompili, A Posocco, M Rotondo, M Simonetto, F Stroili, R Voci, C Ben-Haim, E Briand, H Calderini, G Chauveau, J David, P Del Buono, L De la Vaissiere, C Hamon, O Leruste, P Malcles, J Ocariz, J Perez, A Prendki, J Gladney, L Biasini, M Covarelli, R Manoni, E Angelini, C Batignani, G Bettarini, S Carpinelli, M Cenci, R Cervelli, A Forti, F Giorgi, MA Lusiani, A Marchiori, G Mazur, MA Morganti, M Neri, N Paoloni, E Rizzo, G Walsh, JJ Haire, M Biesiada, J Elmer, P Lau, YP Lu, C Olsen, J Smith, AJS Telnov, AV Baracchini, E Bellini, F Cavoto, G Del Re, D Di Marco, E Faccini, R Ferrarotto, F Ferroni, F Gaspero, M Jackson, PD Gioi, LL Mazzoni, MA Morganti, S Piredda, G Polci, F Renga, F Voena, C Ebert, M Hartmann, T Schroder, H Waldi, R Adye, T Castelli, G Franek, B Olaiya, EO Ricciardi, S Roethel, W Wilson, FF Emery, S Escalier, M Gaidot, A Ganzhur, SF De Monchenault, GH Kozanecki, W Vasseur, G Che, CY Zito, M Chen, XR Liu, H Park, W Purohit, MV Wilson, JR Allen, MT Aston, D Bartoldus, R Bechtle, P Berger, N Claus, R Coleman, JP Convery, MR Dingfelder, JC Dorfan, J Dubois-Felsmann, GP Dunwoodie, W Field, RC Glanzman, T Gowdy, SJ Graham, MT Grenier, P Hast, C Hryn'ova, T Innes, WR Kaminski, J Kelsey, MH Kim, H Kim, P Kocian, ML Leith, DWGS Li, S Luitz, S Luth, V Lynch, HL MacFarlane, DB Marsiske, H Messner, R Muller, DR O'Grady, CP Ofte, I Perazzo, A Perl, M Pulliam, T Ratcliff, BN Roodman, A Salnikov, AA Schindler, RH Schwiening, J Snyder, A Stelzer, J Su, D Sullivan, MK Suzuki, K Swain, SK Thompson, JM Va'vra, J Van Bakel, N Wagner, AP Weaver, M Wisniewski, WJ Wittgen, M Wright, DH Yarritu, AK Yi, K Young, CC Burchat, PR Edwards, AJ Majewski, SA Petersen, BA Wilden, L Ahmed, S Alam, MS Bula, R Ernst, JA Jain, V Pan, B Saeed, MA Wappler, FR Zain, SB Krishnamurthy, M Spanier, SM Eckmann, R Ritchie, JL Ruland, AM Schilling, CJ Schwitters, RF Izen, JM Lou, XC Ye, S Bianchi, F Gallo, F Gamba, D Pelliccioni, M Bomben, M Bosisio, L Cartaro, C Cossutti, F Della Ricca, G Lanceri, L Vitale, L Azzolini, V Lopez-March, N Martinez-Vidal, F Milanes, DA Oyanguren, A Albert, J Banerjee, S Bhuyan, B Hamano, K Kowalewski, R Nugent, IM Roney, JM Sobie, RJ Harrison, PF Ilic, J Latham, TE Mohanty, GB Band, HR Chen, X Dasu, S Flood, KT Hollar, JJ Kutter, PE Pan, Y Pierini, M Prepost, R Wu, SL Neal, H AF Aubert, B. 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Kelsey, M. H. Kim, H. Kim, P. Kocian, M. L. Leith, D. W. G. S. Li, S. Luitz, S. Luth, V. Lynch, H. L. MacFarlane, D. B. Marsiske, H. Messner, R. Muller, D. R. O'Grady, C. P. Ofte, I. Perazzo, A. Perl, M. Pulliam, T. Ratcliff, B. N. Roodman, A. Salnikov, A. A. Schindler, R. H. Schwiening, J. Snyder, A. Stelzer, J. Su, D. Sullivan, M. K. Suzuki, K. Swain, S. K. Thompson, J. M. Va'vra, J. Van Bakel, N. Wagner, A. P. Weaver, M. Wisniewski, W. J. Wittgen, M. Wright, D. H. Yarritu, A. K. Yi, K. Young, C. C. Burchat, P. R. Edwards, A. J. Majewski, S. A. Petersen, B. A. Wilden, L. Ahmed, S. Alam, M. S. Bula, R. Ernst, J. A. Jain, V. Pan, B. Saeed, M. A. Wappler, F. R. Zain, S. B. Krishnamurthy, M. Spanier, S. M. Eckmann, R. Ritchie, J. L. Ruland, A. M. Schilling, C. J. Schwitters, R. F. Izen, J. M. Lou, X. C. Ye, S. Bianchi, F. Gallo, F. Gamba, D. Pelliccioni, M. Bomben, M. Bosisio, L. Cartaro, C. Cossutti, F. Della Ricca, G. Lanceri, L. Vitale, L. Azzolini, V. Lopez-March, N. Martinez-Vidal, F. Milanes, D. A. Oyanguren, A. Albert, J. Banerjee, Sw. Bhuyan, B. Hamano, K. Kowalewski, R. Nugent, I. M. Roney, J. M. Sobie, R. J. Harrison, P. F. Ilic, J. Latham, T. E. Mohanty, G. B. Band, H. R. Chen, X. Dasu, S. Flood, K. T. Hollar, J. J. Kutter, P. E. Pan, Y. Pierini, M. Prepost, R. Wu, S. L. Neal, H. TI Measurement of the CP-violating asymmetries in B(0)-> K(s)(0)pi(0) and of the branching fraction B(0)-> K(0)pi(0) SO PHYSICAL REVIEW D LA English DT Article ID B-DECAYS; PHYSICS; MODEL AB We present a measurement of the time-dependent CP-violating asymmetries in B(0)-> K(S)(0)pi(0) decays based on 383x10(6) Upsilon(4S)-> B (B) over bar events collected by the BABAR experiment at the PEP-II asymmetric-energy B Factory at the Stanford Linear Accelerator Center. We measure the direct CP-violating asymmetry C(KS)(0)pi(0)=0.24 +/- 0.15 +/- 0.03 and the CP-violating asymmetry in the interference between mixing and decay S(KS)(0)pi(0)=0.40 +/- 0.23 +/- 0.03, where the first errors are statistical and the second are systematic. On the same sample, we measure the decay branching fraction, obtaining B(B(0)-> K(0)pi(0))=(10.3 +/- 0.7 +/- 0.6)x10(-6). C1 [Aubert, B.; Bona, M.; Boutigny, D.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prudent, X.; Tisserand, V.; Zghiche, A.] IN2P3, CNRS, Phys Particules Lab, F-74941 Annecy Le Vieux, France. [Aubert, B.; Bona, M.; Boutigny, D.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prudent, X.; Tisserand, V.; Zghiche, A.] Univ Savoie, F-74941 Annecy Le Vieux, France. [Tico, J. Garra; Grauges, E.] Univ Barcelona, Fac Fis, Dept ECM, E-08028 Barcelona, Spain. [Lopez, L.; Palano, A.; Pappagallo, M.] Univ Bari, Dipartimento Fis, I-70126 Bari, Italy. 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RI Rizzo, Giuliana/A-8516-2015; Calcaterra, Alessandro/P-5260-2015; Frey, Raymond/E-2830-2016; dong, liaoyuan/A-5093-2015; Luppi, Eleonora/A-4902-2015; van Bakel, Niels/B-6233-2015; Calabrese, Roberto/G-4405-2015; Mir, Lluisa-Maria/G-7212-2015; Martinez Vidal, F*/L-7563-2014; Kolomensky, Yury/I-3510-2015; Lo Vetere, Maurizio/J-5049-2012; Lusiani, Alberto/N-2976-2015; Lusiani, Alberto/A-3329-2016; Morandin, Mauro/A-3308-2016; Di Lodovico, Francesca/L-9109-2016; Pappagallo, Marco/R-3305-2016; Monge, Maria Roberta/G-9127-2012; Oyanguren, Arantza/K-6454-2014; Lista, Luca/C-5719-2008; Bellini, Fabio/D-1055-2009; Neri, Nicola/G-3991-2012; Forti, Francesco/H-3035-2011; Rotondo, Marcello/I-6043-2012; Patrignani, Claudia/C-5223-2009; de Sangro, Riccardo/J-2901-2012; Saeed, Mohammad Alam/J-7455-2012; Della Ricca, Giuseppe/B-6826-2013; Negrini, Matteo/C-8906-2014 OI Covarelli, Roberto/0000-0003-1216-5235; Rizzo, Giuliana/0000-0003-1788-2866; Paoloni, Eugenio/0000-0001-5969-8712; Faccini, Riccardo/0000-0003-2613-5141; Raven, Gerhard/0000-0002-2897-5323; Calcaterra, Alessandro/0000-0003-2670-4826; Frey, Raymond/0000-0003-0341-2636; Bettarini, Stefano/0000-0001-7742-2998; Cibinetto, Gianluigi/0000-0002-3491-6231; dong, liaoyuan/0000-0002-4773-5050; Pacetti, Simone/0000-0002-6385-3508; Luppi, Eleonora/0000-0002-1072-5633; van Bakel, Niels/0000-0002-4053-7588; Calabrese, Roberto/0000-0002-1354-5400; Mir, Lluisa-Maria/0000-0002-4276-715X; Martinez Vidal, F*/0000-0001-6841-6035; Kolomensky, Yury/0000-0001-8496-9975; Lo Vetere, Maurizio/0000-0002-6520-4480; Lusiani, Alberto/0000-0002-6876-3288; Lusiani, Alberto/0000-0002-6876-3288; Morandin, Mauro/0000-0003-4708-4240; Di Lodovico, Francesca/0000-0003-3952-2175; Pappagallo, Marco/0000-0001-7601-5602; Monge, Maria Roberta/0000-0003-1633-3195; Oyanguren, Arantza/0000-0002-8240-7300; Bellini, Fabio/0000-0002-2936-660X; Neri, Nicola/0000-0002-6106-3756; Forti, Francesco/0000-0001-6535-7965; Rotondo, Marcello/0000-0001-5704-6163; Patrignani, Claudia/0000-0002-5882-1747; de Sangro, Riccardo/0000-0002-3808-5455; Saeed, Mohammad Alam/0000-0002-3529-9255; Della Ricca, Giuseppe/0000-0003-2831-6982; Negrini, Matteo/0000-0003-0101-6963 NR 23 TC 11 Z9 11 U1 0 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. 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Rizzo, G. Walsh, J. J. Haire, M. Biesiada, J. Elmer, P. Lau, Y. P. Lu, C. Olsen, J. Smith, A. J. S. Telnov, A. V. Baracchini, E. Bellini, F. Cavoto, G. Del Re, D. Di Marco, E. Faccini, R. Ferrarotto, F. Ferroni, F. Gaspero, M. Jackson, P. D. Gioi, L. Li Mazzoni, M. A. Morganti, S. Piredda, G. Polci, F. Renga, F. Voena, C. Ebert, M. Hartmann, T. Schroder, H. Waldi, R. Adye, T. Castelli, G. Franek, B. Olaiya, E. O. Ricciardi, S. Roethel, W. Wilson, F. F. Emery, S. Escalier, M. Gaidot, A. Ganzhur, S. F. De Monchenault, G. Hamel Kozanecki, W. Vasseur, G. Yeche, Ch. Zito, M. Chen, X. R. Liu, H. Park, W. Purohit, M. V. Wilson, J. R. Allen, M. T. Aston, D. Bartoldus, R. Bechtle, P. Berger, N. Claus, R. Coleman, J. P. Convery, M. R. Dingfelder, J. C. Dorfan, J. Dubois-Felsmann, G. P. Dunwoodie, W. Field, R. C. Glanzman, T. Gowdy, S. J. Graham, M. T. Grenier, P. Hast, C. Hryn'ova, T. Innes, W. R. Kaminski, J. Kelsey, M. H. Kim, H. Kim, P. Kocian, M. L. Leith, D. W. G. S. Li, S. Luitz, S. Luth, V. Lynch, H. L. MacFarlane, D. B. Marsiske, H. Messner, R. Muller, D. R. O'Grady, C. P. Ofte, I. Perazzo, A. Perl, M. Pulliam, T. Ratcliff, B. N. Roodman, A. Salnikov, A. A. Schindler, R. H. Schwiening, J. Snyder, A. Stelzer, J. Su, D. Sullivan, M. K. Suzuki, K. Swain, S. K. Thompson, J. M. Va'vra, J. Van Bakel, N. Wagner, A. P. Weaver, M. Wisniewski, W. J. Wittgen, M. Wright, D. H. Yarritu, A. K. Yi, K. Young, C. C. Burchat, P. R. Edwards, A. J. Majewski, S. A. Petersen, B. A. Wilden, L. Ahmed, S. Alam, M. S. Bula, R. Ernst, J. A. Jain, V. Pan, B. Saeed, M. A. Wappler, F. R. Zain, S. B. Krishnamurthy, M. Spanier, S. M. Eckmann, R. Ritchie, J. L. Ruland, A. M. Schilling, C. J. Schwitters, R. F. Izen, J. M. Lou, X. C. Ye, S. Bianchi, F. Gallo, F. Gamba, D. Pelliccioni, M. Bomben, M. Bosisio, L. Cartaro, C. Cossutti, F. Della Ricca, G. Lanceri, L. Vitale, L. Azzolini, V. Lopez-March, N. Martinez-Vidal, F. Milanes, D. A. Oyanguren, A. Albert, J. Banerjee, Sw. Bhuyan, B. Hamano, K. Kowalewski, R. Nugent, I. M. Roney, J. M. Sobie, R. J. Harrison, P. F. Ilic, J. Latham, T. E. Mohanty, G. B. Band, H. R. Chen, X. Dasu, S. Flood, K. T. Hollar, J. J. Kutter, P. E. Pan, Y. Pierini, M. Prepost, R. Wu, S. L. Neal, H. TI Study of excited charm-strange baryons with evidence for new baryons Xi(c)(3055)(+) and Xi(c)(3123)(+) SO PHYSICAL REVIEW D LA English DT Article ID SPECTROSCOPY; PHYSICS AB We present a study of excited charm-strange baryon states produced in e(+)e(-) annihilations at or near a center-of-mass energy of 10.58 GeV, in a data sample with an integrated luminosity of 384 fb(-1) recorded with the BABAR detector at the PEP-II e(+)e(-) storage rings at the Stanford Linear Accelerator Center. We study strong decays of charm-strange baryons to Lambda K-+(c)S(0), Lambda K-+(c)-, Lambda K-+(c)-pi(+), Lambda K-+(c)S(0)pi(-), Lambda K-+(c)S(0)pi(-)pi(+), and Lambda K-+(c)-pi(+)pi(-). This study confirms the existence of the states Xi(c)(2980)(+), Xi(c)(3077)(+), and Xi(c)(3077)(0), with a more accurate determination of the Xi(c)(2980)(+) mass and width. We also present evidence for two new states, Xi(c)(3055)(+) and Xi(c)(3123)(+), decaying through the intermediate-resonant modes Sigma(c)(2455)K-++(-) and Sigma(c)(2520)K-++(-), respectively. For each of these baryons, we measure the yield in each final state, determine the statistical significance, and calculate the product of the production cross section and branching fractions. We also measure the masses and widths of these excited charm-strange baryons. C1 [Aubert, B.; Bona, M.; Boutigny, D.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prudent, X.; Tisserand, V.; Zghiche, A.] CNRS, IN2P3, Phys Particules Lab, F-74941 Annecy Le Vieux, France. [Aubert, B.; Bona, M.; Boutigny, D.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prudent, X.; Tisserand, V.; Zghiche, A.] Univ Savoie, F-74941 Annecy Le Vieux, France. 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R.; Liu, H.; Park, W.; Purohit, M. V.; Wilson, J. R.] Univ S Carolina, Columbia, SC 29208 USA. [Allen, M. T.; Aston, D.; Bartoldus, R.; Bechtle, P.; Berger, N.; Claus, R.; Glanzman, T.; Gowdy, S. J.; Graham, M. T.; Grenier, P.; Hast, C.; Hryn'ova, T.; Innes, W. R.; Kaminski, J.; Kelsey, M. H.; Kim, H.; Kim, P.; Kocian, M. L.; Leith, D. W. G. S.; Li, S.; Luitz, S.; Luth, V.; Lynch, H. L.; MacFarlane, D. B.; Marsiske, H.; Messner, R.; Muller, D. R.; O'Grady, C. P.; Ofte, I.; Perazzo, A.; Perl, M.; Pulliam, T.; Ratcliff, B. N.; Roodman, A.; Salnikov, A. A.; Schindler, R. H.; Schwiening, J.; Snyder, A.; Stelzer, J.; Su, D.; Sullivan, M. K.; Suzuki, K.; Swain, S. K.; Thompson, J. M.; Va'vra, J.; Van Bakel, N.; Wagner, A. P.; Weaver, M.; Wisniewski, W. J.; Wittgen, M.; Wright, D. H.; Yarritu, A. K.; Yi, K.; Young, C. C.] Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. [Burchat, P. R.; Edwards, A. J.; Majewski, S. A.; Petersen, B. 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J.] Univ Victoria, Victoria, BC V8W 3P6, Canada. [Harrison, P. F.; Ilic, J.; Latham, T. E.; Mohanty, G. B.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England. [Band, H. R.; Chen, X.; Dasu, S.; Flood, K. T.; Hollar, J. J.; Kutter, P. E.; Pan, Y.; Pierini, M.; Prepost, R.; Wu, S. L.] Univ Wisconsin, Madison, WI 53706 USA. [Neal, H.] Yale Univ, New Haven, CT 06511 USA. RP Aubert, B (reprint author), CNRS, IN2P3, Phys Particules Lab, F-74941 Annecy Le Vieux, France. RI Bellini, Fabio/D-1055-2009; Neri, Nicola/G-3991-2012; Forti, Francesco/H-3035-2011; Rotondo, Marcello/I-6043-2012; Patrignani, Claudia/C-5223-2009; de Sangro, Riccardo/J-2901-2012; Saeed, Mohammad Alam/J-7455-2012; Della Ricca, Giuseppe/B-6826-2013; Negrini, Matteo/C-8906-2014; Monge, Maria Roberta/G-9127-2012; Oyanguren, Arantza/K-6454-2014; Lista, Luca/C-5719-2008; Calcaterra, Alessandro/P-5260-2015; Frey, Raymond/E-2830-2016; Luppi, Eleonora/A-4902-2015; van Bakel, Niels/B-6233-2015; Calabrese, Roberto/G-4405-2015; Mir, Lluisa-Maria/G-7212-2015; Martinez Vidal, F*/L-7563-2014; Kolomensky, Yury/I-3510-2015; Lo Vetere, Maurizio/J-5049-2012; Lusiani, Alberto/N-2976-2015; Lusiani, Alberto/A-3329-2016; Morandin, Mauro/A-3308-2016; Di Lodovico, Francesca/L-9109-2016; Pappagallo, Marco/R-3305-2016 OI Bellini, Fabio/0000-0002-2936-660X; Neri, Nicola/0000-0002-6106-3756; Forti, Francesco/0000-0001-6535-7965; Rotondo, Marcello/0000-0001-5704-6163; Patrignani, Claudia/0000-0002-5882-1747; de Sangro, Riccardo/0000-0002-3808-5455; Saeed, Mohammad Alam/0000-0002-3529-9255; Della Ricca, Giuseppe/0000-0003-2831-6982; Negrini, Matteo/0000-0003-0101-6963; Monge, Maria Roberta/0000-0003-1633-3195; Oyanguren, Arantza/0000-0002-8240-7300; Calcaterra, Alessandro/0000-0003-2670-4826; Frey, Raymond/0000-0003-0341-2636; Raven, Gerhard/0000-0002-2897-5323; Luppi, Eleonora/0000-0002-1072-5633; van Bakel, Niels/0000-0002-4053-7588; Calabrese, Roberto/0000-0002-1354-5400; Mir, Lluisa-Maria/0000-0002-4276-715X; Martinez Vidal, F*/0000-0001-6841-6035; Kolomensky, Yury/0000-0001-8496-9975; Lo Vetere, Maurizio/0000-0002-6520-4480; Lusiani, Alberto/0000-0002-6876-3288; Lusiani, Alberto/0000-0002-6876-3288; Morandin, Mauro/0000-0003-4708-4240; Di Lodovico, Francesca/0000-0003-3952-2175; Pappagallo, Marco/0000-0001-7601-5602 NR 15 TC 40 Z9 40 U1 0 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2008 VL 77 IS 1 AR 012002 DI 10.1103/PhysRevD.77.012002 PG 12 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 258JH UT WOS:000252863700012 ER PT J AU Aubert, B Bona, M Boutigny, D Karyotakis, Y Lees, JP Poireau, V Prudent, X Tisserand, V Zghiche, A Tico, JG Grauges, E Lopez, L Palano, A Pappagallo, M Eigen, G Stugu, B Sun, L Abrams, GS Battaglia, M Brown, DN Button-Shafer, J Cahn, RN Groysman, Y Jacobsen, RG Kadyk, JA Kerth, LT Kolomensky, YG Kukartsev, G Pegna, DL Lynch, G Mir, LM Orimoto, TJ Osipenkov, IL Ronan, MT Tackmann, K Tanabe, T Wenzel, WA Sanchez, PDA Hawkes, CM Watson, AT Koch, H Schroeder, T Walker, D Asgeirsson, DJ Cuhadar-Donszelmann, T Fulsom, BG Hearty, C Mattison, TS McKenna, JA Khan, A Saleem, M Teodorescu, L Blinov, VE Bukin, AD Druzhinin, VP Golubev, VB Onuchin, AP Serednyakov, SI Skovpen, YI Solodov, EP Todyshev, KY Bondioli, M Curry, S Eschrich, I Kirkby, D Lankford, AJ Lund, P Mandelkern, M Martin, EC 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Kroeger, R. Sanders, D. A. Summers, D. J. Zhao, H. W. Brunet, S. Cote, D. Simard, M. Taras, P. Viaud, F. B. Nicholson, H. De Nardo, G. Fabozzi, F. Lista, L. Monorchio, D. Sciacca, C. Baak, M. A. Raven, G. Snoek, H. L. Jessop, C. P. Knoepfel, K. J. LoSecco, J. M. Benelli, G. Corwin, L. A. Honscheid, K. Kagan, H. Kass, R. Morris, J. P. Rahimi, A. M. Regensburger, J. J. Sekula, S. J. Wong, Q. K. Blount, N. L. Brau, J. Frey, R. Igonkina, O. Kolb, J. A. Lu, M. Rahmat, R. Sinev, N. B. Strom, D. Strube, J. Torrence, E. Gagliardi, N. Gaz, A. Margoni, M. Morandin, M. Pompili, A. Posocco, M. Rotondo, M. Simonetto, F. Stroili, R. Voci, C. Ben-Haim, E. Briand, H. Calderini, G. Chauveau, J. David, P. Del Buono, L. de la Vaissiere, Ch. Hamon, O. Leruste, Ph. Malcles, J. Ocariz, J. Perez, A. Prendki, J. Gladney, L. Biasini, M. Covarelli, R. Manoni, E. Angelini, C. Batignani, G. Bettarini, S. Carpinelli, M. Cenci, R. Cervelli, A. Forti, F. Giorgi, M. A. Lusiani, A. Marchiori, G. Mazur, M. A. 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Luth, V. Lynch, H. L. MacFarlane, D. B. Marsiske, H. Messner, R. Muller, D. R. O'Grady, C. P. Ofte, I. Perazzo, A. Perl, M. Pulliam, T. Ratcliff, B. N. Roodman, A. Salnikov, A. A. Schindler, R. H. Schwiening, J. Snyder, A. Su, D. Sullivan, M. K. Suzuki, K. Swain, S. K. Thompson, J. M. Va'vra, J. Wagner, A. P. Weaver, M. Wisniewski, W. J. Wittgen, M. Wright, D. H. Yarritu, A. K. Yi, K. Young, C. C. Ziegler, V. Burchat, P. R. Edwards, A. J. Majewski, S. A. Miyashita, T. S. Petersen, B. A. Wilden, L. Ahmed, S. Alam, M. S. Bula, R. Ernst, J. A. Jain, V. Pan, B. Saeed, M. A. Wappler, F. R. Zain, S. B. Krishnamurthy, M. Spanier, S. M. Eckmann, R. Ritchie, J. L. Ruland, A. M. Schilling, C. J. Schwitters, R. F. Izen, J. M. Lou, X. C. Ye, S. Bianchi, F. Gallo, F. Gamba, D. Pelliccioni, M. Bomben, M. Bosisio, L. Cartaro, C. Cossutti, F. Della Ricca, G. Lanceri, L. Vitale, L. Azzolini, V. Lopez-March, N. Martinez-Vidal, F. Milanes, D. A. Oyanguren, A. Albert, J. Banerjee, Sw. Bhuyan, B. Hamano, K. Kowalewski, R. Nugent, I. M. Roney, J. M. Sobie, R. J. Harrison, P. F. Ilic, J. Latham, T. E. Mohanty, G. B. Band, H. R. Chen, X. Dasu, S. Flood, K. T. Hollar, J. J. Kutter, P. E. Pan, Y. Pierini, M. Prepost, R. Wu, S. L. Neal, H. TI Study of resonances in exclusive B decays to (D)over-bar((*))D((*))K SO PHYSICAL REVIEW D LA English DT Article ID X(3872) AB We present a study of resonances in exclusive decays of B mesons to (D) over bar (DK)-D-(*)-K-(*). We report the observation of the decays B ->(D) over bar D-(*)(s1)+(2536) where the D-s1(+)(2536) is reconstructed in the (DK+)-K-*0 and (D*+KS0) decay channels. We report also the observation of the decays B ->psi(3770)K where the psi(3770) decays to (D) over bar D-0(0) and D-D+. In addition, we present the observation of an enhancement for the (D) over bar D-*0(0) invariant mass in the decays B ->(D) over bar (DK)-D-*0-K-0, at a mass of (3875.1(-0.5)(+0.7)+/- 0.5) MeV/c(2) with a width of (3.0(-1.4)(+1.9)+/- 0.9) MeV (the first errors are statistical and the second are systematic). Branching fractions and spin studies are shown for the three resonances. The results are based on 347 fb(-1) of data collected with the BABAR detector at the PEP-II B factory. C1 [Aubert, B.; Bona, M.; Boutigny, D.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prudent, X.; Tisserand, V.; Zghiche, A.] Univ Savoie, CNRS, Phys Particules Lab, IN2P3, F-74941 Annecy Le Vieux, France. [Tico, J. Garra; Grauges, E.] Univ Barcelona, Fac Fis, Dept ECM, E-08028 Barcelona, Spain. [Lopez, L.; Palano, A.; Pappagallo, M.] Univ Bari, Dipartmento Fis, I-70126 Bari, Italy. [Eigen, G.; Stugu, B.; Sun, L.] Univ Bergen, Inst Phys, N-5007 Bergen, Norway. [Abrams, G. S.; Battaglia, M.; Brown, D. 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[Soffer, A.] Tel Aviv Univ, IL-69978 Tel Aviv, Israel. [Peruzzi, I. M.] Univ Perugia, Dipartimento Fis, I-06100 Perugia, Italy. [Fabozzi, F.] Univ Basilicata, Potenza, Italy. [Martinez-Vidal, F.] Univ Barcelona, Fac Fis, Dept ECM, E-08028 Barcelona, Spain. RP Aubert, B (reprint author), Univ Savoie, CNRS, Phys Particules Lab, IN2P3, F-74941 Annecy Le Vieux, France. RI Calcaterra, Alessandro/P-5260-2015; Frey, Raymond/E-2830-2016; Luppi, Eleonora/A-4902-2015; White, Ryan/E-2979-2015; Calabrese, Roberto/G-4405-2015; Mir, Lluisa-Maria/G-7212-2015; Martinez Vidal, F*/L-7563-2014; Kolomensky, Yury/I-3510-2015; Lo Vetere, Maurizio/J-5049-2012; Lusiani, Alberto/N-2976-2015; Lusiani, Alberto/A-3329-2016; Morandin, Mauro/A-3308-2016; Di Lodovico, Francesca/L-9109-2016; Pappagallo, Marco/R-3305-2016; Negrini, Matteo/C-8906-2014; Monge, Maria Roberta/G-9127-2012; Oyanguren, Arantza/K-6454-2014; Lista, Luca/C-5719-2008; Bellini, Fabio/D-1055-2009; Neri, Nicola/G-3991-2012; Forti, Francesco/H-3035-2011; Rotondo, Marcello/I-6043-2012; Patrignani, Claudia/C-5223-2009; de Sangro, Riccardo/J-2901-2012; Saeed, Mohammad Alam/J-7455-2012; Della Ricca, Giuseppe/B-6826-2013 OI Calcaterra, Alessandro/0000-0003-2670-4826; Frey, Raymond/0000-0003-0341-2636; Cavoto, Gianluca/0000-0003-2161-918X; Barlow, Roger/0000-0002-8295-8612; Raven, Gerhard/0000-0002-2897-5323; Luppi, Eleonora/0000-0002-1072-5633; White, Ryan/0000-0003-3589-5900; Calabrese, Roberto/0000-0002-1354-5400; Mir, Lluisa-Maria/0000-0002-4276-715X; Martinez Vidal, F*/0000-0001-6841-6035; Kolomensky, Yury/0000-0001-8496-9975; Lo Vetere, Maurizio/0000-0002-6520-4480; Lusiani, Alberto/0000-0002-6876-3288; Lusiani, Alberto/0000-0002-6876-3288; Morandin, Mauro/0000-0003-4708-4240; Di Lodovico, Francesca/0000-0003-3952-2175; Pappagallo, Marco/0000-0001-7601-5602; Negrini, Matteo/0000-0003-0101-6963; Monge, Maria Roberta/0000-0003-1633-3195; Oyanguren, Arantza/0000-0002-8240-7300; Bellini, Fabio/0000-0002-2936-660X; Neri, Nicola/0000-0002-6106-3756; Forti, Francesco/0000-0001-6535-7965; Rotondo, Marcello/0000-0001-5704-6163; Patrignani, Claudia/0000-0002-5882-1747; de Sangro, Riccardo/0000-0002-3808-5455; Saeed, Mohammad Alam/0000-0002-3529-9255; Della Ricca, Giuseppe/0000-0003-2831-6982 NR 23 TC 107 Z9 107 U1 1 U2 9 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2008 VL 77 IS 1 AR 011102 DI 10.1103/PhysRevD.77.011102 PG 8 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 258JH UT WOS:000252863700002 ER PT J AU Aubert, B Bona, M Boutigny, D Karyotakis, Y Lees, JP Poireau, V Prudent, X Tisserand, V Zghiche, A Tico, JG Grauges, E Lopez, L Palano, A Pappagallo, M Eigen, G Stugu, B Sun, L Abrams, GS Battaglia, M Brown, DN Button-Shafer, J Cahn, RN Groysman, Y Jacobsen, RG Kadyk, JA Kerth, LT Kolomensky, YG Kukartsev, G Pegna, DL Lynch, G Mir, LM Orimoto, TJ Osipenkov, IL Ronan, MT Tackmann, K Tanabe, T Wenzel, WA Sanchez, PDA Hawkes, CM Watson, AT Held, T Koch, H Pelizaeus, M Schroeder, T Steinke, M Walker, D Asgeirsson, DJ Cuhadar-Donszelmann, T Fulsom, BG Hearty, C Mattison, TS McKenna, JA Khan, A Saleem, M Teodorescu, L Blinov, VE Bukin, AD Druzhinin, VP Golubev, VB Onuchin, AP Serednyakov, SI Skovpen, YI Solodov, EP Todyshev, KY Bondioli, M Curry, S Eschrich, I Kirkby, D Lankford, AJ Lund, P Mandelkern, M Martin, EC Stoker, DP Abachi, S Buchanan, C Foulkes, SD Gary, JW Liu, F Long, O Shen, BC Zhang, L Paar, HP Rahatlou, S Sharma, V Berryhill, JW Campagnari, C Cunha, A Dahmes, B Hong, TM Kovalskyi, D Richman, JD Beck, TW Eisner, AM Flacco, CJ Heusch, CA Kroseberg, J Lockman, WS Schalk, T Schumm, BA Seiden, A Wilson, MG Winstrom, LO Chen, E Cheng, CH Fang, F Hitlin, DG Narsky, I Piatenko, T Porter, FC Andreassen, R Mancinelli, G Meadows, BT Mishra, K Sokoloff, MD Blanc, F Bloom, PC Chen, S Ford, WT Hirschauer, JF Kreisel, A Nagel, M Nauenberg, U Olivas, A Smith, JG Ulmer, KA Wagner, SR Zhang, J Gabareen, AM Soffer, A Toki, WH Wilson, RJ Winklmeier, F Altenburg, DD Feltresi, E Hauke, A Jasper, H Merkel, J Petzold, A Spaan, B Wacker, K Klose, V Kobel, MJ Lacker, HM Mader, WF Nogowski, R Schubert, J Schubert, KR Schwierz, R Sundermann, JE Volk, A Bernard, D Bonneaud, GR Latour, E Lombardo, V Thiebaux, C Verderi, M Clark, PJ Gradl, W Muheim, F Playfer, S Robertson, AI Watson, JE Xie, Y Andreotti, M Bettoni, D Bozzi, C Calabrese, R Cecchi, A Cibinetto, G Franchini, P Luppi, E Negrini, M Petrella, A Piemontese, L Prencipe, E Santoro, V Anulli, F Baldini-Ferroli, R Calcaterra, A De Sangro, R Finocchiaro, G Pacetti, S Patteri, P Peruzzi, IM Piccolo, M Rama, M Zallo, A Buzzo, A Contri, R Lo Vetere, M Macri, MM Monge, MR Passaggio, S Patrignani, C Robutti, E Santroni, A Tosi, S Chaisanguanthum, KS Morii, M Wu, J Dubitzky, RS Marks, J Schenk, S Uwer, U Bard, DJ Dauncey, PD Flack, RL Nash, JA Vazquez, WP Tibbetts, M Behera, PK Chai, X Charles, MJ Mallik, U Ziegler, V Cochran, J Crawley, HB Dong, L Eyges, V Meyer, WT Prell, S Rosenberg, EI Rubin, AE Gao, YY Gritsan, AV Guo, ZJ Lae, CK Denig, AG Fritsch, M Schott, G Arnaud, N Beuilleux, J D'Orazio, A Davier, M Grosdidier, G Hoker, A Lepeltier, V Le Diberder, F Lutz, AM Pruvot, S Rodier, S Roudeau, P Schune, MH Serrano, J Sordini, V Stocchi, A Wang, WF Wormser, G Lange, DJ Wright, DM Bingham, I Chavez, CA Forster, IJ Fry, JR Gabathuler, E Gamet, R Hutchcroft, DE Payne, DJ Schofield, KC Touramanis, C Bevan, AJ George, KA Di Lodovico, F Menges, W Sacco, R Cowan, G Flaecher, HU Hopkins, DA Paramesvaran, S Salvatore, F Wren, AC Brown, DN Davis, CL Allison, J Barlow, NR Barlow, RJ Chia, YM Edgar, CL Lafferty, GD West, TJ Yi, JI Anderson, J Chen, C Jawahery, A Roberts, DA Simi, G Tuggle, JM Blaylock, G Dallapiccola, C Hertzbach, SS Li, X Moore, TB Salvati, E Saremi, S Cowan, R Dujmic, D Fisher, PH Koeneke, K Sciolla, G Sekula, SJ Spitznagel, M Taylor, F Yamamoto, RK Zhao, M Zheng, Y Mclachlin, SE Patel, PM Robertson, SH Lazzaro, A Palombo, F Bauer, JM Cremaldi, L Eschenburg, V Godang, R Kroeger, R Sanders, DA Summers, DJ Zhao, HW Brunet, S Cote, D Simard, M Taras, P Viaud, FB Viaud, FB Nicholson, H De Nardo, G Fabozzi, F Lista, L Monorchio, D Sciacca, C Baak, MA Raven, G Snoek, HL Jessop, CP Knoepfel, KJ LoSecco, JM Benelli, G Corwin, LA Honscheid, K Kagan, H Kass, R Morris, JP Rahimi, AM Regensburger, JJ Wong, QK Blount, NL Brau, J Frey, R Igonkina, O Kolb, JA Lu, M Rahmat, R Sinev, NB Strom, D Strube, J Torrence, E Gagliardi, N Gaz, A Margoni, M Morandin, M Pompili, A Posocco, M Rotondo, M Simonetto, F Stroili, R Voci, C Ben-Haim, E Briand, H Calderini, G Chauveau, J David, P Del Buono, L De la Vaissiere, C Hamon, O Leruste, P Malcles, J Ocariz, J Perez, A Prendki, J Gladney, L Biasini, M Covarelli, R Manoni, E Angelini, C Batignani, G Bettarini, S Carpinelli, M Cenci, R Cervelli, A Forti, F Giorgi, MA Lusiani, A Marchiori, G Mazur, MA Morganti, M Neri, N Paoloni, E Rizzo, G Walsh, JJ Haire, M Biesiada, J Elmer, P Lau, YP Lu, C Olsen, J Smith, AJS Telnov, AV Baracchini, E Bellini, F Cavoto, G Del Re, D Di Marco, E Faccini, R Ferrarotto, F Ferroni, F Gaspero, M Jackson, PD Gioi, LL Mazzoni, MA Morganti, S Piredda, G Polci, F Renga, F Voena, C Ebert, M Hartmann, T Schroder, H Waldi, R Adye, T Castelli, G Franek, B Olaiya, EO Ricciardi, S Roethel, W Wilson, FF Emery, S Escalier, M Gaidot, A Ganzhur, SF De Monchenault, GH Kozanecki, W Vasseur, G Yeche, C Zito, M Chen, XR Liu, H Park, W Purohit, MV Wilson, JR Allen, MT Aston, D Bartoldus, R Bechtle, P Berger, N Claus, R Coleman, JP Convery, MR Dingfelder, JC Dorfan, J Dubois-Felsmann, GP Dunwoodie, W Field, RC Glanzman, T Gowdy, SJ Graham, MT Grenier, P Hast, C Hryn'ova, T Innes, WR Kaminski, J Kelsey, MH Kim, H Kim, P Kocian, ML Leith, DWGS Li, S Luitz, S Luth, V Lynch, HL MacFarlane, DB Marsiske, H Messner, R Muller, DR O'Grady, CP Ofte, I Perazzo, A Perl, M Pulliam, T Ratcliff, BN Roodman, A Salnikov, AA Schindler, RH Schwiening, J Snyder, A Stelzer, J Su, D Sullivan, MK Suzuki, K Swain, SK Thompson, JM Va'vra, J Van Bakel, N Wagner, AP Weaver, M Wisniewski, WJ Wittgen, M Wright, DH Yarritu, AK Yi, K Young, CC Burchat, PR Edwards, AJ Majewski, SA Petersen, BA Wilden, L Ahmed, S Alam, MS Bula, R Ernst, JA Jain, V Pan, B Saeed, MA Wappler, FR Zain, SB Krishnamurthy, M Spanier, SM Eckmann, R Ritchie, JL Ruland, AM Schilling, CJ Schwitters, RF Izen, JM Lou, XC Ye, S Bianchi, F Gallo, F Gamba, D Pelliccioni, M Bomben, M Bosisio, L Cartaro, C Cossutti, F Della Ricca, G Lanceri, L Vitale, L Azzolini, V Lopez-March, N Martinez-Vidal, F Milanes, DA Oyanguren, A Albert, J Banerjee, S Bhuyan, B Hamano, K Kowalewski, R Nugent, IM Roney, JM Sobie, RJ Harrison, PF Ilic, J Latham, TE Mohanty, GB Band, HR Chen, X Dasu, S Flood, KT Hollar, JJ Kutter, PE Pan, Y Pierini, M Prepost, R Wu, SL Neal, H AF Aubert, B. Bona, M. Boutigny, D. Karyotakis, Y. Lees, J. P. Poireau, V. Prudent, X. Tisserand, V. Zghiche, A. Tico, J. Garra Grauges, E. Lopez, L. Palano, A. Pappagallo, M. Eigen, G. Stugu, B. Sun, L. Abrams, G. S. Battaglia, M. Brown, D. N. Button-Shafer, J. Cahn, R. N. Groysman, Y. Jacobsen, R. G. Kadyk, J. A. Kerth, L. T. Kolomensky, Yu. G. Kukartsev, G. Pegna, D. Lopes Lynch, G. Mir, L. M. Orimoto, T. J. Osipenkov, I. L. Ronan, M. T. Tackmann, K. Tanabe, T. Wenzel, W. A. Sanchez, P. Del Amo Hawkes, C. M. Watson, A. T. Held, T. Koch, H. Pelizaeus, M. Schroeder, T. Steinke, M. Walker, D. Asgeirsson, D. J. Cuhadar-Donszelmann, T. Fulsom, B. G. Hearty, C. Mattison, T. S. McKenna, J. A. Khan, A. Saleem, M. Teodorescu, L. Blinov, V. E. Bukin, A. D. Druzhinin, V. P. Golubev, V. B. Onuchin, A. P. Serednyakov, S. I. Skovpen, Yu. I. Solodov, E. P. Todyshev, K. Yu. Bondioli, M. Curry, S. Eschrich, I. Kirkby, D. Lankford, A. J. Lund, P. Mandelkern, M. Martin, E. C. Stoker, D. P. Abachi, S. Buchanan, C. Foulkes, S. D. Gary, J. W. Liu, F. Long, O. Shen, B. C. Zhang, L. Paar, H. P. Rahatlou, S. Sharma, V. Berryhill, J. W. Campagnari, C. Cunha, A. Dahmes, B. Hong, T. M. Kovalskyi, D. Richman, J. D. Beck, T. W. Eisner, A. M. Flacco, C. J. Heusch, C. A. Kroseberg, J. Lockman, W. S. Schalk, T. Schumm, B. A. Seiden, A. Wilson, M. G. Winstrom, L. O. Chen, E. Cheng, C. H. Fang, F. Hitlin, D. G. Narsky, I. Piatenko, T. Porter, F. C. Andreassen, R. Mancinelli, G. Meadows, B. T. Mishra, K. Sokoloff, M. D. Blanc, F. Bloom, P. C. Chen, S. Ford, W. T. Hirschauer, J. F. Kreisel, A. Nagel, M. Nauenberg, U. Olivas, A. Smith, J. G. Ulmer, K. A. Wagner, S. R. Zhang, J. Gabareen, A. M. Soffer, A. Toki, W. H. Wilson, R. J. Winklmeier, F. Altenburg, D. D. Feltresi, E. Hauke, A. Jasper, H. Merkel, J. Petzold, A. Spaan, B. Wacker, K. Klose, V. Kobel, M. J. Lacker, H. M. Mader, W. F. Nogowski, R. Schubert, J. Schubert, K. R. Schwierz, R. Sundermann, J. E. Volk, A. Bernard, D. Bonneaud, G. R. Latour, E. Lombardo, V. Thiebaux, Ch. Verderi, M. Clark, P. J. Gradl, W. Muheim, F. Playfer, S. Robertson, A. I. Watson, J. E. Xie, Y. Andreotti, M. Bettoni, D. Bozzi, C. Calabrese, R. Cecchi, A. Cibinetto, G. Franchini, P. Luppi, E. Negrini, M. Petrella, A. Piemontese, L. Prencipe, E. Santoro, V. Anulli, F. Baldini-Ferroli, R. Calcaterra, A. De Sangro, R. Finocchiaro, G. Pacetti, S. Patteri, P. Peruzzi, I. M. Piccolo, M. Rama, M. Zallo, A. Buzzo, A. Contri, R. Lo Vetere, M. Macri, M. M. Monge, M. R. Passaggio, S. Patrignani, C. Robutti, E. Santroni, A. Tosi, S. Chaisanguanthum, K. S. Morii, M. Wu, J. Dubitzky, R. S. Marks, J. Schenk, S. Uwer, U. Bard, D. J. Dauncey, P. D. Flack, R. L. Nash, J. A. Vazquez, W. Panduro Tibbetts, M. Behera, P. K. Chai, X. Charles, M. J. Mallik, U. Ziegler, V. Cochran, J. Crawley, H. B. Dong, L. Eyges, V. Meyer, W. T. Prell, S. Rosenberg, E. I. Rubin, A. E. Gao, Y. Y. Gritsan, A. V. Guo, Z. J. Lae, C. K. Denig, A. G. Fritsch, M. Schott, G. Arnaud, N. Bequilleux, J. D'Orazio, A. Davier, M. Grosdidier, G. Hoecker, A. Lepeltier, V. Le Diberder, F. Lutz, A. M. Pruvot, S. Rodier, S. Roudeau, P. Schune, M. H. Serrano, J. Sordini, V. Stocchi, A. Wang, W. F. Wormser, G. Lange, D. J. Wright, D. M. Bingham, I. Chavez, C. A. Forster, I. J. Fry, J. R. Gabathuler, E. Gamet, R. Hutchcroft, D. E. Payne, D. J. Schofield, K. C. Touramanis, C. Bevan, A. J. George, K. A. Di Lodovico, F. Menges, W. Sacco, R. Cowan, G. Flaecher, H. U. Hopkins, D. A. Paramesvaran, S. Salvatore, F. Wren, A. C. Brown, D. N. Davis, C. L. Allison, J. Barlow, N. R. Barlow, R. J. Chia, Y. M. Edgar, C. L. Lafferty, G. D. West, T. J. Yi, J. I. Anderson, J. Chen, C. Jawahery, A. Roberts, D. A. Simi, G. Tuggle, J. M. Blaylock, G. Dallapiccola, C. Hertzbach, S. S. Li, X. Moore, T. B. Salvati, E. Saremi, S. Cowan, R. Dujmic, D. Fisher, P. H. Koeneke, K. Sciolla, G. Sekula, S. J. Spitznagel, M. Taylor, F. Yamamoto, R. K. Zhao, M. Zheng, Y. Mclachlin, S. E. Patel, P. M. Robertson, S. H. Lazzaro, A. Palombo, F. Bauer, J. M. Cremaldi, L. Eschenburg, V. Godang, R. Kroeger, R. Sanders, D. A. Summers, D. J. Zhao, H. W. Brunet, S. Cote, D. Simard, M. Taras, P. Viaud, F. B. Viaud, F. B. Nicholson, H. De Nardo, G. Fabozzi, F. Lista, L. Monorchio, D. Sciacca, C. Baak, M. A. Raven, G. Snoek, H. L. Jessop, C. P. Knoepfel, K. J. LoSecco, J. M. Benelli, G. Corwin, L. A. Honscheid, K. Kagan, H. Kass, R. Morris, J. P. Rahimi, A. M. Regensburger, J. J. Wong, Q. K. Blount, N. L. Brau, J. Frey, R. Igonkina, O. Kolb, J. A. Lu, M. Rahmat, R. Sinev, N. B. Strom, D. Strube, J. Torrence, E. Gagliardi, N. Gaz, A. Margoni, M. Morandin, M. Pompili, A. Posocco, M. Rotondo, M. Simonetto, F. Stroili, R. Voci, C. Ben-Haim, E. Briand, H. Calderini, G. Chauveau, J. David, P. Del Buono, L. De la Vaissiere, Ch. Hamon, O. Leruste, Ph. Malcles, J. Ocariz, J. Perez, A. Prendki, J. Gladney, L. Biasini, M. Covarelli, R. Manoni, E. Angelini, C. Batignani, G. Bettarini, S. Carpinelli, M. Cenci, R. Cervelli, A. Forti, F. Giorgi, M. A. Lusiani, A. Marchiori, G. Mazur, M. A. Morganti, M. Neri, N. Paoloni, E. Rizzo, G. Walsh, J. J. Haire, M. Biesiada, J. Elmer, P. Lau, Y. P. Lu, C. Olsen, J. Smith, A. J. S. Telnov, A. V. Baracchini, E. Bellini, F. Cavoto, G. Del Re, D. Di Marco, E. Faccini, R. Ferrarotto, F. Ferroni, F. Gaspero, M. Jackson, P. D. Gioi, L. Li Mazzoni, M. A. Morganti, S. Piredda, G. Polci, F. Renga, F. Voena, C. Ebert, M. Hartmann, T. Schroeder, H. Waldi, R. Adye, T. Castelli, G. Franek, B. Olaiya, E. O. Ricciardi, S. Roethel, W. Wilson, F. F. Emery, S. Escalier, M. Gaidot, A. Ganzhur, S. F. De Monchenault, G. Hamel Kozanecki, W. Vasseur, G. Yeche, Ch. Zito, M. Chen, X. R. Liu, H. Park, W. Purohit, M. V. Wilson, J. R. Allen, M. T. Aston, D. Bartoldus, R. Bechtle, P. Berger, N. Claus, R. Coleman, J. P. Convery, M. R. Dingfelder, J. C. Dorfan, J. Dubois-Felsmann, G. P. Dunwoodie, W. Field, R. C. Glanzman, T. Gowdy, S. J. Graham, M. T. Grenier, P. Hast, C. Hryn'ova, T. Innes, W. R. Kaminski, J. Kelsey, M. H. Kim, H. Kim, P. Kocian, M. L. Leith, D. W. G. S. Li, S. Luitz, S. Luth, V. Lynch, H. L. MacFarlane, D. B. Marsiske, H. Messner, R. Muller, D. R. O'Grady, C. P. Ofte, I. Perazzo, A. Perl, M. Pulliam, T. Ratcliff, B. N. Roodman, A. Salnikov, A. A. Schindler, R. H. Schwiening, J. Snyder, A. Stelzer, J. Su, D. Sullivan, M. K. Suzuki, K. Swain, S. K. Thompson, J. M. Va'vra, J. Van Bakel, N. Wagner, A. P. Weaver, M. Wisniewski, W. J. Wittgen, M. Wright, D. H. Yarritu, A. K. Yi, K. Young, C. C. Burchat, P. R. Edwards, A. J. Majewski, S. A. Petersen, B. A. Wilden, L. Ahmed, S. Alam, M. S. Bula, R. Ernst, J. A. Jain, V. Pan, B. Saeed, M. A. Wappler, F. R. Zain, S. B. Krishnamurthy, M. Spanier, S. M. Eckmann, R. Ritchie, J. L. Ruland, A. M. Schilling, C. J. Schwitters, R. F. Izen, J. M. Lou, X. C. Ye, S. Bianchi, F. Gallo, F. Gamba, D. Pelliccioni, M. Bomben, M. Bosisio, L. Cartaro, C. Cossutti, F. Della Ricca, G. Lanceri, L. Vitale, L. Azzolini, V. Lopez-March, N. Martinez-Vidal, F. Milanes, D. A. Oyanguren, A. Albert, J. Banerjee, Sw. Bhuyan, B. Hamano, K. Kowalewski, R. Nugent, I. M. Roney, J. M. Sobie, R. J. Harrison, P. F. Ilic, J. Latham, T. E. Mohanty, G. B. Band, H. R. Chen, X. Dasu, S. Flood, K. T. Hollar, J. J. Kutter, P. E. Pan, Y. Pierini, M. Prepost, R. Wu, S. L. Neal, H. TI Search for the rare charmless hadronic decay B+-> a(0)(+)pi(0) SO PHYSICAL REVIEW D LA English DT Article AB We present a search for B decays to a charged scalar meson a(0)(+) and a pi(0) where the a(0)(+) decays to an eta meson and a pi(+). The analysis was performed on a data sample consisting of 383x10(6) B (B) over bar pairs collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. We find no significant signal and set an upper limit on the product branching fraction B(B+-> a(0)(+)pi(0))xB(a(0)(+)->eta pi(+)) of 1.4x10(-6) at the 90% confidence level. C1 [Aubert, B.; Bona, M.; Boutigny, D.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prudent, X.; Tisserand, V.; Zghiche, A.] Univ Savoie, CNRS, Phys Particules Lab, IN2P3, F-74941 Annecy Le Vieux, France. [Tico, J. Garra; Grauges, E.] Univ Barcelona, Fac Fis, Dept ECM, E-08028 Barcelona, Spain. [Lopez, L.; Palano, A.; Pappagallo, M.] Univ Bari, Ist Nazl Fis Nucl, Dipartimento Fis, I-70126 Bari, Italy. [Eigen, G.; Stugu, B.; Sun, L.] Univ Bergen, Inst Phys, N-5007 Bergen, Norway. [Abrams, G. S.; Battaglia, M.; Brown, D. N.; Button-Shafer, J.; Cahn, R. N.; Groysman, Y.; Jacobsen, R. G.; Kadyk, J. A.; Kerth, L. T.; Kolomensky, Yu. G.; Kukartsev, G.; Pegna, D. Lopes; Lynch, G.; Mir, L. M.; Orimoto, T. J.; Osipenkov, I. L.; Ronan, M. T.; Tackmann, K.; Tanabe, T.; Wenzel, W. A.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Sanchez, P. Del Amo; Hawkes, C. M.; Watson, A. T.] Univ Birmingham, Birmingham B15 2TT, W Midlands, England. [Held, T.; Koch, H.; Pelizaeus, M.; Schroeder, T.; Steinke, M.] Ruhr Univ Bochum, Inst Expt Phys, D-44780 Bochum, Germany. [Walker, D.] Univ Bristol, Bristol BS8 1TL, Avon, England. [Asgeirsson, D. J.; Cuhadar-Donszelmann, T.; Fulsom, B. G.; Hearty, C.; Mattison, T. S.; McKenna, J. A.] Univ British Columbia, Vancouver, BC V6T 1Z1, Canada. [Khan, A.; Saleem, M.; Teodorescu, L.] Brunel Univ, Uxbridge UB8 3PH, Middx, England. [Blinov, V. E.; Bukin, A. D.; Druzhinin, V. P.; Golubev, V. B.; Onuchin, A. P.; Serednyakov, S. I.; Skovpen, Yu. I.; Solodov, E. P.; Todyshev, K. Yu.] Budker Inst Nucl Phys, Novosibirsk 630090, Russia. [Bondioli, M.; Curry, S.; Eschrich, I.; Kirkby, D.; Lankford, A. J.; Lund, P.; Mandelkern, M.; Martin, E. C.; Stoker, D. P.] Univ Calif Irvine, Irvine, CA 92697 USA. [Abachi, S.; Buchanan, C.] Univ Calif Los Angeles, Los Angeles, CA 90024 USA. [Foulkes, S. D.; Gary, J. W.; Liu, F.; Long, O.; Shen, B. C.; Zhang, L.] Univ Calif Riverside, Riverside, CA 92521 USA. 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[Baldini-Ferroli, R.; Calcaterra, A.; De Sangro, R.; Finocchiaro, G.; Pacetti, S.; Peruzzi, I. M.; Piccolo, M.; Rama, M.; Zallo, A.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. [Buzzo, A.; Contri, R.; Lo Vetere, M.; Macri, M. M.; Monge, M. R.; Passaggio, S.; Patrignani, C.; Robutti, E.; Santroni, A.; Tosi, S.] Univ Genoa, Ist Nazl Fis Nucl, Dipartimento Fis, I-16146 Genoa, Italy. [Chaisanguanthum, K. S.; Morii, M.; Wu, J.] Harvard Univ, Cambridge, MA 02138 USA. [Dubitzky, R. S.; Marks, J.; Schenk, S.; Uwer, U.] Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany. [Bard, D. J.; Dauncey, P. D.; Flack, R. L.; Nash, J. A.; Vazquez, W. Panduro; Tibbetts, M.] Imperial Coll London, London SW7 2AZ, England. [Chai, X.; Charles, M. J.; Mallik, U.; Ziegler, V.] Univ Iowa, Iowa City, IA 52242 USA. [Cochran, J.; Crawley, H. B.; Dong, L.; Eyges, V.; Meyer, W. T.; Prell, S.; Rosenberg, E. I.; Rubin, A. E.] Iowa State Univ, Ames, IA 50011 USA. [Gao, Y. Y.; Gritsan, A. 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A.; Paramesvaran, S.; Salvatore, F.; Wren, A. C.] Univ London Royal Holloway & Bedford New Coll, Egham TW20 0EX, Surrey, England. [Brown, D. N.; Davis, C. L.] Univ Louisville, Louisville, KY 40292 USA. [Allison, J.; Barlow, N. R.; Barlow, R. J.; Chia, Y. M.; Edgar, C. L.; Lafferty, G. D.; West, T. J.; Yi, J. I.] Univ Manchester, Manchester M13 9PL, Lancs, England. [Anderson, J.; Chen, C.; Jawahery, A.; Roberts, D. A.; Simi, G.; Tuggle, J. M.] Univ Maryland, College Pk, MD 20742 USA. [Blaylock, G.; Dallapiccola, C.; Hertzbach, S. S.; Li, X.; Moore, T. B.; Salvati, E.; Saremi, S.] Univ Massachusetts, Amherst, MA 01003 USA. [Cowan, R.; Dujmic, D.; Fisher, P. H.; Koeneke, K.; Sciolla, G.; Sekula, S. J.; Spitznagel, M.; Taylor, F.; Yamamoto, R. K.; Zhao, M.; Zheng, Y.] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA. [Mclachlin, S. E.; Patel, P. M.; Robertson, S. H.] McGill Univ, Montreal, PQ H3A 2T8, Canada. 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L.; Brau, J.; Frey, R.; Igonkina, O.; Kolb, J. A.; Lu, M.; Rahmat, R.; Sinev, N. B.; Strom, D.; Strube, J.; Torrence, E.] Univ Oregon, Eugene, OR 97403 USA. [Gagliardi, N.; Gaz, A.; Margoni, M.; Morandin, M.; Pompili, A.; Posocco, M.; Rotondo, M.; Simonetto, F.; Stroili, R.; Voci, C.] Univ Padua, Ist Nazl Fis Nucl, Dipartimento Fis, I-35131 Padua, Italy. [Ben-Haim, E.; Briand, H.; Calderini, G.; Chauveau, J.; David, P.; Del Buono, L.; De la Vaissiere, Ch.; Hamon, O.; Leruste, Ph.; Malcles, J.; Ocariz, J.; Perez, A.; Prendki, J.] Univ Paris 06, CNRS, Lab Phys Nucl & Hautes Energies, INP2P, F-75252 Paris, France. [Ben-Haim, E.; Briand, H.; Calderini, G.; Chauveau, J.; David, P.; Del Buono, L.; De la Vaissiere, Ch.; Hamon, O.; Leruste, Ph.; Malcles, J.; Ocariz, J.; Perez, A.; Prendki, J.] Univ Paris 07, F-75252 Paris, France. [Gladney, L.] Univ Penn, Philadelphia, PA 19104 USA. 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[Martinez-Vidal, F.] Univ Barcelona, Fac Fis, Dept ECM, E-08028 Barcelona, Spain. RP Aubert, B (reprint author), Univ Savoie, CNRS, Phys Particules Lab, IN2P3, F-74941 Annecy Le Vieux, France. RI Calcaterra, Alessandro/P-5260-2015; Frey, Raymond/E-2830-2016; dong, liaoyuan/A-5093-2015; Rizzo, Giuliana/A-8516-2015; van Bakel, Niels/B-6233-2015; Calabrese, Roberto/G-4405-2015; Mir, Lluisa-Maria/G-7212-2015; Martinez Vidal, F*/L-7563-2014; Kolomensky, Yury/I-3510-2015; Lo Vetere, Maurizio/J-5049-2012; Lusiani, Alberto/N-2976-2015; Morandin, Mauro/A-3308-2016; Lusiani, Alberto/A-3329-2016; Della Ricca, Giuseppe/B-6826-2013; Di Lodovico, Francesca/L-9109-2016; Pappagallo, Marco/R-3305-2016; Oyanguren, Arantza/K-6454-2014; Luppi, Eleonora/A-4902-2015; Patrignani, Claudia/C-5223-2009; de Sangro, Riccardo/J-2901-2012; Rotondo, Marcello/I-6043-2012; Neri, Nicola/G-3991-2012; Forti, Francesco/H-3035-2011; Lista, Luca/C-5719-2008; Bellini, Fabio/D-1055-2009; Saeed, Mohammad Alam/J-7455-2012; Negrini, Matteo/C-8906-2014; Monge, Maria Roberta/G-9127-2012 OI Paoloni, Eugenio/0000-0001-5969-8712; Faccini, Riccardo/0000-0003-2613-5141; Raven, Gerhard/0000-0002-2897-5323; Calcaterra, Alessandro/0000-0003-2670-4826; Frey, Raymond/0000-0003-0341-2636; Bettarini, Stefano/0000-0001-7742-2998; Cibinetto, Gianluigi/0000-0002-3491-6231; dong, liaoyuan/0000-0002-4773-5050; Pacetti, Simone/0000-0002-6385-3508; Covarelli, Roberto/0000-0003-1216-5235; Rizzo, Giuliana/0000-0003-1788-2866; van Bakel, Niels/0000-0002-4053-7588; Calabrese, Roberto/0000-0002-1354-5400; Mir, Lluisa-Maria/0000-0002-4276-715X; Martinez Vidal, F*/0000-0001-6841-6035; Kolomensky, Yury/0000-0001-8496-9975; Lo Vetere, Maurizio/0000-0002-6520-4480; Lusiani, Alberto/0000-0002-6876-3288; Morandin, Mauro/0000-0003-4708-4240; Lusiani, Alberto/0000-0002-6876-3288; Della Ricca, Giuseppe/0000-0003-2831-6982; Di Lodovico, Francesca/0000-0003-3952-2175; Pappagallo, Marco/0000-0001-7601-5602; Oyanguren, Arantza/0000-0002-8240-7300; Luppi, Eleonora/0000-0002-1072-5633; Patrignani, Claudia/0000-0002-5882-1747; de Sangro, Riccardo/0000-0002-3808-5455; Rotondo, Marcello/0000-0001-5704-6163; Neri, Nicola/0000-0002-6106-3756; Forti, Francesco/0000-0001-6535-7965; Bellini, Fabio/0000-0002-2936-660X; Saeed, Mohammad Alam/0000-0002-3529-9255; Negrini, Matteo/0000-0003-0101-6963; Monge, Maria Roberta/0000-0003-1633-3195 NR 14 TC 3 Z9 3 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2008 VL 77 IS 1 AR 011101 DI 10.1103/PhysRevD.77.011101 PG 8 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 258JH UT WOS:000252863700001 ER PT J AU Aubert, B Bona, M Boutigny, D Karyotakis, Y Lees, JP Poireau, V Prudent, X Tisserand, V Zghiche, A Tico, JG Grauges, E Lopez, L Palano, A Pappagallo, M Eigen, G Stugu, B Sun, L Abrams, GS Battaglia, M Brown, DN Button-Shafer, J Cahn, RN Groysman, Y Jacobsen, RG Kadyk, JA Kerth, LT Kolomensky, YG Kukartsev, G Pegna, DL Lynch, G Mir, LM Orimoto, TJ Osipenkov, IL Ronan, MT Tackmann, K Tanabe, T Wenzel, WA Sanchez, PD Hawkes, CM Watson, AT Koch, H Schroeder, T Walker, D Asgeirsson, DJ Cuhadar-Donszelmann, T Fulsom, BG Hearty, C Mattison, TS McKenna, JA Barrett, M Khan, A Saleem, M Teodorescu, L Blinov, VE Bukin, AD Druzhinin, VP Golubev, VB Onuchin, AP Serednyakov, SI Skovpen, YI Solodov, EP Todyshev, KY Bondioli, M Curry, S Eschrich, I Kirkby, D Lankford, AJ Lund, P Mandelkern, M Martin, EC Stoker, DP Abachi, S Buchanan, C Foulkes, SD Gary, JW Liu, F Long, O Shen, BC Vitug, GM Zhang, L Paar, HP Rahatlou, S Sharma, V Berryhill, JW Campagnari, C Cunha, A Dahmes, B Hong, TM Kovalskyi, D Richman, JD Beck, TW Eisner, AM Flacco, CJ Heusch, CA Kroseberg, J Lockman, WS Schalk, T Schumm, BA Seiden, A Wilson, MG Winstrom, LO Chen, E Cheng, CH Fang, F Hitlin, DG Narsky, I Piatenko, T Porter, FC Andreassen, R Mancinelli, G Meadows, BT Mishra, K Sokoloff, MD Blanc, F Bloom, PC Chen, S Ford, WT Hirschauer, JF Kreisel, A Nagel, M Nauenberg, U Olivas, A Smith, JG Ulmer, KA Wagner, SR Zhang, J Gabareen, AM Soffer, A Toki, WH Wilson, RJ Winklmeier, F Altenburg, DD Feltresi, E Hauke, A Jasper, H Merkel, J Petzold, A Spaan, B Wacker, K Klose, V Kobel, MJ Lacker, HM Mader, WF Nogowski, R Schubert, J Schubert, KR Schwierz, R Sundermann, JE Volk, A Bernard, D Bonneaud, GR Latour, E Lombardo, V Thiebaux, C Verderi, M Clark, PJ Gradl, W Muheim, F Playfer, S Robertson, AI Watson, JE Xie, Y Andreotti, M Bettoni, D Bozzi, C Calabrese, R Cecchi, A Cibinetto, G Franchini, P Luppi, E Negrini, M Petrella, A Piemontese, L Prencipe, E Santoro, V Anulli, F Baldini-Ferroli, R Calcaterra, A De Sangro, R Finocchiaro, G Pacetti, S Patteri, P Peruzzi, IM Piccolo, M Rama, M Zallo, A Buzzo, A Contri, R Lo Vetere, M Macri, MM Monge, MR Passaggio, S Patrignani, C Robutti, E Santroni, A Tosi, S Chaisanguanthum, KS Morii, M Wu, J Dubitzky, RS Marks, J Schenk, S Uwer, U Bard, DJ Dauncey, PD Flack, RL Nash, JA Vazquez, WP Tibbetts, M Behera, PK Chai, X Charles, MJ Mallik, U Cochran, J Crawley, HB Dong, L Eyges, V Meyer, WT Prell, S Rosenberg, EI Rubin, AE Gao, YY Gritsan, AV Guo, ZJ Lae, CK Denig, AG Fritsch, M Schott, G Arnaud, N Bequilleux, J D'Orazio, A Davier, M Grosdidier, G Hocker, A Lepeltier, V Le Diberder, F Lutz, AM Pruvot, S Rodier, S Roudeau, P Schune, MH Serrano, J Sordini, V Stocchi, A Wang, WF Wormser, G Lange, DJ Wright, DM Bingham, I Burke, JP Chavez, CA Fry, JR 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Leith, D. W. G. S. Li, S. Luitz, S. Luth, V. Lynch, H. L. MacFarlane, D. B. Marsiske, H. Messner, R. Muller, D. R. O'Grady, C. P. Ofte, I. Perazzo, A. Perl, M. Pulliam, T. Ratcliff, B. N. Roodman, A. Salnikov, A. A. Schindler, R. H. Schwiening, J. Snyder, A. Su, D. Sullivan, M. K. Suzuki, K. Swain, S. K. Thompson, J. M. Va'vra, J. Wagner, A. P. Weaver, M. Wisniewski, W. J. Wittgen, M. Wright, D. H. Yarritu, A. K. Yi, K. Young, C. C. Ziegler, V. Burchat, P. R. Edwards, A. J. Majewski, S. A. Miyashita, T. S. Petersen, B. A. Wilden, L. Ahmed, S. Alam, M. S. Bula, R. Ernst, J. A. Jain, V. Pan, B. Saeed, M. A. Wappler, F. R. Zain, S. B. Krishnamurthy, M. Spanier, S. M. Eckmann, R. Ritchie, J. L. Ruland, A. M. Schilling, C. J. Schwitters, R. F. Izen, J. M. Lou, X. C. Ye, S. Bianchi, F. Gallo, F. Gamba, D. Pelliccioni, M. Bomben, M. Bosisio, L. Cartaro, C. Cossutti, F. Della Ricca, G. Lanceri, L. Vitale, L. Azzolini, V. Lopez-March, N. Martinez-Vidal, F. Milanes, D. A. Oyanguren, A. Albert, J. Banerjee, Sw. Bhuyan, B. Hamano, K. Kowalewski, R. Nugent, I. M. Roney, J. M. Sobie, R. J. Harrison, P. F. Ilic, J. Latham, T. E. Mohanty, G. B. Band, H. R. Chen, X. Dasu, S. Flood, K. T. Hollar, J. J. Kutter, P. E. Pan, Y. Pierini, M. Prepost, R. Wu, S. L. Neal, H. TI Search for B+->tau(+)nu decays with hadronic B tags SO PHYSICAL REVIEW D LA English DT Article ID PHYSICS AB We present a search for the decay B+->tau(+)nu using 383x10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the BABAR detector at the SLAC PEP-II B Factory. We select a sample of events with one completely reconstructed tag B in a hadronic decay mode (B-->(DX-)-X-(*)0), and examine the rest of the event to search for a B+->tau(+)nu decay. We identify the tau lepton in the following modes: tau(+)-> e(+)nunu, tau(+)->mu(+)nu(nu) over bar, tau(+)->pi(+)(nu) over bar, and tau(+)->pi(+)pi(0)(nu) over bar. We find a 2.2 sigma excess in data and measure a branching fraction of B(B+->tau(+)nu)=(1.8(-0.8)(+0.9)(stat.)+/- 0.4(bkg. syst.)+/- 0.2(other syst.))x10(-4). We calculate the product of the B meson decay constant f(B) and [V-ub] to be f(B)center dot[V-ub]=(10.1(-2.5)(+2.3)(stat.)(-1.5)(+1.2)(syst.))x10(-4) GeV. C1 [Bona, M.; Boutigny, D.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prudent, X.; Tisserand, V.; Zghiche, A.; Tico, J. Garra] IN2P3, CNRS, Phys Particules Lab, F-74941 Annecy Le Vieux, France. [Tico, J. Garra; Grauges, E.; Palano, A.] Univ Savoie, F-74941 Annecy Le Vieux, France. [Lopez, L.; Palano, A.; Pappagallo, M.] Univ Barcelona, Fac Fis, Dept ECM, E-08028 Barcelona, Spain. [Lopez, L.; Palano, A.; Pappagallo, M.] Univ Bari, Dipartmento Fis, I-70126 Bari, Italy. [Lopez, L.; Palano, A.; Pappagallo, M.] Ist Nazl Fis Nucl, I-70126 Bari, Italy. [Eigen, G.; Stugu, B.; Sun, L.] Univ Bergen, Inst Phys, N-5007 Bergen, Norway. [Abrams, G. S.; Battaglia, M.; Brown, D. 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S.; Li, S.; Luitz, S.; Luth, V.; Sullivan, M. K.; Suzuki, K.; Swain, S. K.; Thompson, J. M.; Va'vra, J.; Wagner, A. P.; Weaver, M.; Wisniewski, W. J.; Wittgen, M.; Wright, D. H.; Yarritu, A. K.; Yi, K.; Young, C. C.; Ziegler, V.] Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. [Burchat, P. R.; Edwards, A. J.; Majewski, S. A.; Miyashita, T. S.; Petersen, B. A.; Wilden, L.] Stanford Univ, Stanford, CA 94305 USA. [Ahmed, S.; Alam, M. S.; Bula, R.; Ernst, J. A.; Jain, V.; Pan, B.; Saeed, M. A.; Wappler, F. R.; Zain, S. B.] SUNY Albany, Albany, NY 12222 USA. [Krishnamurthy, M.; Spanier, S. M.] Univ Tennessee, Knoxville, TN 37996 USA. [Eckmann, R.; Ritchie, J. L.; Ruland, A. M.; Schilling, C. J.; Schwitters, R. F.] Univ Texas Austin, Austin, TX 78712 USA. [Izen, J. M.; Lou, X. C.; Ye, S.] Univ Texas Dallas, Richardson, TX 75083 USA. [Bianchi, F.; Gallo, F.; Gamba, D.; Pelliccioni, M.] Univ Turin, Dipartimento Fis, I-10125 Turin, Italy. [Bianchi, F.; Gallo, F.; Gamba, D.; Pelliccioni, M.] Ist Nazl Fis Nucl, I-10125 Turin, Italy. [Bomben, M.; Bosisio, L.; Cartaro, C.; Cossutti, F.; Della Ricca, G.; Lanceri, L.; Vitale, L.] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy. [Azzolini, V.; Lopez-March, N.; Martinez-Vidal, F.; Milanes, D. A.; Oyanguren, A.] Univ Valencia, CSIC, IFIC, E-46071 Valencia, Spain. [Albert, J.; Banerjee, Sw.; Bhuyan, B.; Hamano, K.; Kowalewski, R.; Nugent, I. M.; Roney, J. M.; Sobie, R. J.] Univ Victoria, Victoria, BC V8W 3P6, Canada. [Harrison, P. F.; Ilic, J.; Latham, T. E.; Mohanty, G. B.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England. [Band, H. R.; Chen, X.; Dasu, S.; Flood, K. T.; Hollar, J. J.; Kutter, P. E.; Pan, Y.; Pierini, M.; Prepost, R.; Wu, S. L.] Univ Wisconsin, Madison, WI 53706 USA. [Neal, H.] Yale Univ, New Haven, CT 06511 USA. [Abachi, S.; Buchanan, C.] Univ Calif Los Angeles, Los Angeles, CA 90024 USA. [Foulkes, S. D.; Gary, J. W.; Liu, F.; Long, O.; Shen, B. C.; Vitug, G. M.; Zhang, L.] Univ Calif Riverside, Riverside, CA 92521 USA. RP Aubert, B (reprint author), IN2P3, CNRS, Phys Particules Lab, F-74941 Annecy Le Vieux, France. RI Calcaterra, Alessandro/P-5260-2015; Frey, Raymond/E-2830-2016; Luppi, Eleonora/A-4902-2015; White, Ryan/E-2979-2015; Calabrese, Roberto/G-4405-2015; Mir, Lluisa-Maria/G-7212-2015; Martinez Vidal, F*/L-7563-2014; Kolomensky, Yury/I-3510-2015; Lo Vetere, Maurizio/J-5049-2012; Lusiani, Alberto/N-2976-2015; Morandin, Mauro/A-3308-2016; Lusiani, Alberto/A-3329-2016; Di Lodovico, Francesca/L-9109-2016; Pappagallo, Marco/R-3305-2016; Lista, Luca/C-5719-2008; Bellini, Fabio/D-1055-2009; Negrini, Matteo/C-8906-2014; Monge, Maria Roberta/G-9127-2012; Oyanguren, Arantza/K-6454-2014; Patrignani, Claudia/C-5223-2009; Saeed, Mohammad Alam/J-7455-2012; de Sangro, Riccardo/J-2901-2012; Rotondo, Marcello/I-6043-2012; Neri, Nicola/G-3991-2012; Della Ricca, Giuseppe/B-6826-2013; Forti, Francesco/H-3035-2011 OI Calcaterra, Alessandro/0000-0003-2670-4826; Frey, Raymond/0000-0003-0341-2636; Raven, Gerhard/0000-0002-2897-5323; Luppi, Eleonora/0000-0002-1072-5633; White, Ryan/0000-0003-3589-5900; Calabrese, Roberto/0000-0002-1354-5400; Mir, Lluisa-Maria/0000-0002-4276-715X; Martinez Vidal, F*/0000-0001-6841-6035; Kolomensky, Yury/0000-0001-8496-9975; Lo Vetere, Maurizio/0000-0002-6520-4480; Lusiani, Alberto/0000-0002-6876-3288; Morandin, Mauro/0000-0003-4708-4240; Lusiani, Alberto/0000-0002-6876-3288; Di Lodovico, Francesca/0000-0003-3952-2175; Pappagallo, Marco/0000-0001-7601-5602; Bellini, Fabio/0000-0002-2936-660X; Negrini, Matteo/0000-0003-0101-6963; Monge, Maria Roberta/0000-0003-1633-3195; Oyanguren, Arantza/0000-0002-8240-7300; Patrignani, Claudia/0000-0002-5882-1747; Saeed, Mohammad Alam/0000-0002-3529-9255; de Sangro, Riccardo/0000-0002-3808-5455; Rotondo, Marcello/0000-0001-5704-6163; Neri, Nicola/0000-0002-6106-3756; Della Ricca, Giuseppe/0000-0003-2831-6982; Forti, Francesco/0000-0001-6535-7965 NR 18 TC 18 Z9 18 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. 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Leith, D. W. G. S. Li, S. Luitz, S. Luth, V. Lynch, H. L. MacFarlane, D. B. Marsiske, H. Messner, R. Muller, D. R. O'Grady, C. P. Ofte, I. Perazzo, A. Perl, M. Pulliam, T. Ratcliff, B. N. Roodman, A. Salnikov, A. A. Schindler, R. H. Schwiening, J. Snyder, A. Stelzer, J. Su, D. Sullivan, M. K. Suzuki, K. Swain, S. K. Thompson, J. M. Va'vra, J. van Bakel, N. Wagner, A. P. Weaver, M. Wisniewski, W. J. Wittgen, M. Wright, D. H. Yarritu, A. K. Yi, K. Young, C. C. Burchat, P. R. Edwards, A. J. Majewski, S. A. Petersen, B. A. Wilden, L. Ahmed, S. Alam, M. S. Bula, R. Ernst, J. A. Jain, V. Pan, B. Saeed, M. A. Wappler, F. R. Zain, S. B. Bugg, W. Krishnamurthy, M. Spanier, S. M. Eckmann, R. Ritchie, J. L. Ruland, A. M. Schilling, C. J. Schwitters, R. F. Izen, J. M. Lou, X. C. Ye, S. Bianchi, F. Gallo, F. Gamba, D. Pelliccioni, M. Bomben, M. Bosisio, L. Cartaro, C. Cossutti, F. Della Ricca, G. Lanceri, L. Vitale, L. Azzolini, V. Lopez-March, N. Martinez-Vidal, F. Milanes, D. A. Oyanguren, A. Albert, J. Banerjee, Sw. Bhuyan, B. Hamano, K. Kowalewski, R. Nugent, I. M. Roney, J. M. Sobie, R. J. Harrison, P. F. Ilic, J. Latham, T. E. Mohanty, G. B. Pappagallo, M. Band, H. R. Chen, X. Dasu, S. Flood, K. T. Hollar, J. J. Kutter, P. E. Pan, Y. Pierini, M. Prepost, R. Wu, S. L. Neal, H. TI Search for the decays B-0 -> e(+)e(-)gamma and B-0 ->mu(+)mu(-)gamma SO PHYSICAL REVIEW D LA English DT Article AB We present results of a search for the decays B-0 -> l(+)l(-)gamma (l=e or mu). The search is performed using 320x10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the BABAR detector at the PEP-II B Factory at SLAC. We find no significant signal and set the following branching fraction upper limits at the 90% confidence level: B(B-0 -> e(+)e(-)gamma)< 1.2x10(-7) and B(B-0 ->mu(+)mu(-)gamma)< 1.6x10(-7). C1 [Aubert, B.; Bona, M.; Boutigny, D.; Karyotakis, Y.; Lees, J. 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[Angelini, C.; Batignani, G.; Bettarini, S.; Carpinelli, M.; Cenci, R.; Cervelli, A.; Forti, F.; Giorgi, M. A.; Lusiani, A.; Marchiori, G.; Mazur, M. A.; Morganti, M.; Neri, N.; Paoloni, E.; Rizzo, G.; Walsh, J. J.] Ist Nazl Fis Nucl, I-56127 Pisa, Italy. [Haire, M.] Prairie View A&M Univ, Prairie View, TX 77446 USA. [Biesiada, J.; Elmer, P.; Lau, Y. P.; Lu, C.; Olsen, J.; Smith, A. J. S.; Telnov, A. V.] Princeton Univ, Princeton, NJ 08544 USA. [Baracchini, E.; Bellini, F.; Cavoto, G.; D'Orazio, A.; del Re, D.; Di Marco, E.; Piredda, G.; Polci, F.; Renga, F.; Voena, C.] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy. [Morganti, M.; Baracchini, E.; Bellini, F.; Cavoto, G.; D'Orazio, A.; del Re, D.; Di Marco, E.; Faccini, R.; Ferrarotto, F.; Ferroni, F.; Gaspero, M.; Jackson, P. D.; Gioi, L. Li; Mazzoni, M. A.; Piredda, G.; Polci, F.; Renga, F.; Voena, C.] Ist Nazl Fis Nucl, I-00185 Rome, Italy. [Schroeder, T.; Ebert, M.; Hartmann, T.; Waldi, R.] Univ Rostock, D-18051 Rostock, Germany. [Waldi, R.; Adye, T.; Castelli, G.; Franek, B.; Olaiya, E. O.; Ricciardi, S.; Roethel, W.; Wilson, F. F.] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England. [Aleksan, R.; Emery, S.; Escalier, M.; Gaidot, A.; Ganzhur, S. F.; de Monchenault, G. Hamel; Kozanecki, W.; Vasseur, G.; Yeche, Ch.; Zito, M.] CEA Saclay, DSM Dapnia, F-91191 Gif Sur Yvette, France. [Liu, F.; Chen, X. R.; Liu, H.; Park, W.; Purohit, M. V.; Wilson, J. R.] Univ S Carolina, Columbia, SC 29208 USA. [Lynch, G.; Gradl, W.; Allen, M. T.; Aston, D.; Bartoldus, R.; Bechtle, P.; Berger, N.; Claus, R.; Coleman, J. P.; Convery, M. R.; Dingfelder, J. C.; Dorfan, J.; Dubois-Felsmann, G. P.; Dunwoodie, W.; Field, R. C.; Glanzman, T.; Gowdy, S. J.; Graham, M. T.; Grenier, P.; Hast, C.; Hryn'ova, T.; Innes, W. R.; Kaminski, J.; Kelsey, M. H.; Kim, H.; Kim, P.; Kocian, M. L.; Leith, D. W. G. S.; Luitz, S.; Luth, V.; MacFarlane, D. B.; Marsiske, H.; Messner, R.; Muller, D. R.; O'Grady, C. P.; Ofte, I.; Perazzo, A.; Perl, M.; Pulliam, T.; Ratcliff, B. N.; Roodman, A.; Salnikov, A. A.; Schindler, R. H.; Schwiening, J.; Snyder, A.; Stelzer, J.; Su, D.; Sullivan, M. K.; Suzuki, K.; Swain, S. K.; Thompson, J. M.; Va'vra, J.; van Bakel, N.; Wagner, A. P.; Weaver, M.; Wisniewski, W. J.; Wittgen, M.; Wright, D. H.; Yarritu, A. K.; Yi, K.; Young, C. C.] Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. [Burchat, P. R.; Edwards, A. J.; Majewski, S. A.; Petersen, B. A.; Wilden, L.] Stanford Univ, Stanford, CA 94305 USA. [Wilden, L.; Ahmed, S.; Alam, M. S.; Bula, R.; Ernst, J. A.; Jain, V.; Pan, B.; Saeed, M. A.; Wappler, F. R.; Zain, S. B.] SUNY Albany, Albany, NY 12222 USA. [Bugg, W.; Krishnamurthy, M.; Spanier, S. M.] Univ Tennessee, Knoxville, TN 37996 USA. [Eckmann, R.; Ritchie, J. L.; Ruland, A. M.; Schilling, C. J.; Schwitters, R. F.] Univ Texas Austin, Austin, TX 78712 USA. [Izen, J. M.; Lou, X. C.; Ye, S.] Univ Texas Dallas, Richardson, TX 75083 USA. [Bianchi, F.; Gallo, F.] Ist Nazl Fis Nucl, I-10125 Turin, Italy. [Bianchi, F.; Gallo, F.] Univ Trieste, Dipartimento Fis, I-10125 Turin, Italy. [Bomben, M.; Bosisio, L.; Cartaro, C.; Cossutti, F.; Della Ricca, G.; Lanceri, L.; Vitale, L.] Ist Nazl Fis Nucl, I-34127 Trieste, Italy. [Bomben, M.; Bosisio, L.; Cartaro, C.; Cossutti, F.; Della Ricca, G.; Lanceri, L.; Vitale, L.] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy. [Azzolini, V.; Lopez-March, N.; Martinez-Vidal, F.; Milanes, D. A.; Oyanguren, A.] Univ Valencia, CSIC, IFIC, E-46071 Valencia, Spain. [Albert, J.; Banerjee, Sw.; Bhuyan, B.; Hamano, K.; Kowalewski, R.; Nugent, I. M.; Roney, J. M.; Sobie, R. J.] Univ Victoria, Victoria, BC V8W 3P6, Canada. [Buzzo, A.; Harrison, P. F.; Ilic, J.; Latham, T. E.; Mohanty, G. B.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England. [Buzzo, A.; Band, H. R.; Chen, X.; Dasu, S.; Flood, K. T.; Hollar, J. J.; Kutter, P. E.; Pan, Y.; Prepost, R.; Wu, S. L.] Univ Wisconsin, Madison, WI 53706 USA. [Neal, H.] Yale Univ, New Haven, CT 06511 USA. RP Aubert, B (reprint author), Univ Savoie, CNRS, IN2P3, Phys Particules Lab, F-74941 Annecy Le Vieux, France. RI Calcaterra, Alessandro/P-5260-2015; Frey, Raymond/E-2830-2016; dong, liaoyuan/A-5093-2015; Rizzo, Giuliana/A-8516-2015; van Bakel, Niels/B-6233-2015; Calabrese, Roberto/G-4405-2015; Mir, Lluisa-Maria/G-7212-2015; Martinez Vidal, F*/L-7563-2014; Kolomensky, Yury/I-3510-2015; Lo Vetere, Maurizio/J-5049-2012; Lusiani, Alberto/N-2976-2015; Morandin, Mauro/A-3308-2016; Lusiani, Alberto/A-3329-2016; Della Ricca, Giuseppe/B-6826-2013; Di Lodovico, Francesca/L-9109-2016; Pappagallo, Marco/R-3305-2016; de Sangro, Riccardo/J-2901-2012; Saeed, Mohammad Alam/J-7455-2012; Negrini, Matteo/C-8906-2014; Monge, Maria Roberta/G-9127-2012; Oyanguren, Arantza/K-6454-2014; Luppi, Eleonora/A-4902-2015; Lista, Luca/C-5719-2008; Bellini, Fabio/D-1055-2009; Neri, Nicola/G-3991-2012; Forti, Francesco/H-3035-2011; Rotondo, Marcello/I-6043-2012; Patrignani, Claudia/C-5223-2009 OI Paoloni, Eugenio/0000-0001-5969-8712; Faccini, Riccardo/0000-0003-2613-5141; Raven, Gerhard/0000-0002-2897-5323; Calcaterra, Alessandro/0000-0003-2670-4826; Frey, Raymond/0000-0003-0341-2636; Bettarini, Stefano/0000-0001-7742-2998; Cibinetto, Gianluigi/0000-0002-3491-6231; dong, liaoyuan/0000-0002-4773-5050; Pacetti, Simone/0000-0002-6385-3508; Covarelli, Roberto/0000-0003-1216-5235; Rizzo, Giuliana/0000-0003-1788-2866; van Bakel, Niels/0000-0002-4053-7588; Calabrese, Roberto/0000-0002-1354-5400; Mir, Lluisa-Maria/0000-0002-4276-715X; Martinez Vidal, F*/0000-0001-6841-6035; Kolomensky, Yury/0000-0001-8496-9975; Lo Vetere, Maurizio/0000-0002-6520-4480; Lusiani, Alberto/0000-0002-6876-3288; Morandin, Mauro/0000-0003-4708-4240; Lusiani, Alberto/0000-0002-6876-3288; Della Ricca, Giuseppe/0000-0003-2831-6982; Di Lodovico, Francesca/0000-0003-3952-2175; Pappagallo, Marco/0000-0001-7601-5602; de Sangro, Riccardo/0000-0002-3808-5455; Saeed, Mohammad Alam/0000-0002-3529-9255; Negrini, Matteo/0000-0003-0101-6963; Monge, Maria Roberta/0000-0003-1633-3195; Oyanguren, Arantza/0000-0002-8240-7300; Luppi, Eleonora/0000-0002-1072-5633; Bellini, Fabio/0000-0002-2936-660X; Neri, Nicola/0000-0002-6106-3756; Forti, Francesco/0000-0001-6535-7965; Rotondo, Marcello/0000-0001-5704-6163; Patrignani, Claudia/0000-0002-5882-1747 NR 16 TC 1 Z9 1 U1 0 U2 4 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2008 VL 77 IS 1 AR 011104 DI 10.1103/PhysRevD.77.011104 PG 7 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 258JH UT WOS:000252863700004 ER PT J AU Avakian, H Efremov, AV Goeke, K Metz, A Schweitzer, P Teckentrup, T AF Avakian, H. Efremov, A. V. Goeke, K. Metz, A. Schweitzer, P. Teckentrup, T. TI Are there approximate relations among transverse momentum dependent distribution functions? SO PHYSICAL REVIEW D LA English DT Review ID SINGLE-SPIN ASYMMETRIES; DEEP-INELASTIC-SCATTERING; FINAL-STATE INTERACTIONS; QUARK-SOLITON MODEL; DRELL-YAN PROCESSES; POLARIZED PARTON DENSITIES; N-C LIMIT; AZIMUTHAL ASYMMETRIES; SEMIINCLUSIVE DIS; DISTRIBUTION H(1)(X,Q(2)) AB Certain exact relations among transverse momentum dependent parton distribution functions due to QCD equations of motion turn into approximate ones upon the neglect of pure twist-3 terms. On the basis of available data from HERMES, we test the practical usefulness of one such "Wandzura-Wilczek-type approximation," namely, of that connecting h(1L)(perpendicular to(1)a)(x) to h(L)(a)(x), and discuss how it can be further tested by future CLAS and COMPASS data. C1 [Avakian, H.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. [Efremov, A. V.] Joint Inst Nucl Res, Dubna 141980, Russia. [Goeke, K.; Metz, A.; Schweitzer, P.; Teckentrup, T.] Ruhr Univ Bochum, Inst Theoret Phys 2, D-44780 Bochum, Germany. [Metz, A.] Temple Univ, Dept Phys, Philadelphia, PA 19122 USA. RP Avakian, H (reprint author), Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. NR 120 TC 39 Z9 39 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 EI 1550-2368 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2008 VL 77 IS 1 AR 014023 DI 10.1103/PhysRevD.77.014023 PG 9 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 258JH UT WOS:000252863700045 ER PT J AU Beane, SR Luu, TC Orginos, K Parreno, A Savage, MJ Torok, A Walker-Loud, A AF Beane, Silas R. Luu, Thomas C. Orginos, Kostas Parreno, Assumpta Savage, Martin J. Torok, Aaron Walker-Loud, Andre TI Precise determination of the I=2 pi pi scattering length from mixed-action lattice QCD SO PHYSICAL REVIEW D LA English DT Article ID CHIRAL PERTURBATION-THEORY; QUANTUM-FIELD THEORIES; 2-PION WAVE-FUNCTION; WILSON FERMIONS; PHASE-SHIFT; ELECTROMAGNETIC CORRECTIONS; NUCLEON-SCATTERING; VOLUME DEPENDENCE; ENERGY-SPECTRUM; VIRTUAL PHOTONS AB The I = 2 pi pi scattering length is calculated in fully dynamical lattice QCD with domain-wall valence quarks on the asqtad-improved coarse MILC configurations (with fourth-rooted staggered sea quarks) at four light-quark masses. Two- and three-flavor mixed-action chiral perturbation theory at next-to-leading order is used to perform the chiral and continuum extrapolations. At the physical charged pion mass, we find m(pi)a(pi pi)(I=2) = -0.043 30 +/- 0.000 42, where the error bar combines the statistical and systematic uncertainties in quadrature. C1 [Beane, Silas R.; Torok, Aaron] Univ New Hampshire, Dept Phys, Durham, NH 03824 USA. [Luu, Thomas C.] Lawrence Livermore Natl Lab, N Div, Livermore, CA 94551 USA. [Orginos, Kostas] Coll William & Mary, Dept Phys, Williamsburg, VA 23187 USA. [Orginos, Kostas] Jefferson Lab, Newport News, VA 23606 USA. [Parreno, Assumpta] Univ Barcelona, Dept Estructura & Constituents Mat, E-08028 Barcelona, Spain. [Parreno, Assumpta] Univ Barcelona, Inst Ciencies Cosmos, E-08028 Barcelona, Spain. [Savage, Martin J.] Univ Washington, Dept Phys, Seattle, WA 98195 USA. [Walker-Loud, Andre] Univ Maryland, Dept Phys, College Pk, MD 20742 USA. RP Beane, SR (reprint author), Univ New Hampshire, Dept Phys, Durham, NH 03824 USA. NR 87 TC 67 Z9 68 U1 0 U2 6 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2008 VL 77 IS 1 AR 014505 DI 10.1103/PhysRevD.77.014505 PG 12 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 258JH UT WOS:000252863700065 ER PT J AU Bern, Z Carrasco, JJ Forde, D Ita, H Johansson, H AF Bern, Z. Carrasco, J. J. Forde, D. Ita, H. Johansson, H. TI Unexpected cancellations in gravity theories SO PHYSICAL REVIEW D LA English DT Review ID ONE-LOOP AMPLITUDES; GAUGE-THEORY; SCATTERING-AMPLITUDES; YANG-MILLS; N=8 SUPERGRAVITY; TREE AMPLITUDES; QUANTUM-GRAVITY; STRING THEORY; DIMENSIONAL REGULARIZATION; MULTIPLE BREMSSTRAHLUNG AB Recent computations of scattering amplitudes show that N=8 supergravity is surprisingly well behaved in the ultraviolet and may even be ultraviolet finite in perturbation theory. The novel cancellations necessary for ultraviolet finiteness first appear at one loop in the guise of the "no-triangle hypothesis." We study one-loop amplitudes in pure Einstein gravity and point out the existence of cancellations similar to those found previously in N=8 supergravity. These cancellations go beyond those found in the one-loop effective action. Using unitarity, this suggests that generic theories of quantum gravity based on the Einstein-Hilbert action may be better behaved in the ultraviolet at higher loops than suggested by naive power counting, though without additional (supersymmetric) cancellations they diverge. We comment on future studies that should be performed to support this proposal. C1 [Bern, Z.; Carrasco, J. J.; Forde, D.; Johansson, H.] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA. [Forde, D.] Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. [Ita, H.] Univ Coll Swansea, Dept Phys, Swansea SA2 8PP, W Glam, Wales. RP Bern, Z (reprint author), Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA. OI Carrasco, John Joseph/0000-0002-4499-8488 NR 100 TC 77 Z9 77 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2008 VL 77 IS 2 AR 025010 DI 10.1103/PhysRevD.77.025010 PG 18 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 258JK UT WOS:000252864000110 ER PT J AU Cheng, M Christ, NH Datta, S Van der Heide, J Jung, C Karsch, F Kaczmarek, O Laermann, E Mawhinney, RD Miao, C Petreczky, P Petrov, K Schmidt, C Soeldner, W Umeda, T AF Cheng, M. Christ, N. H. Datta, S. Van der Heide, J. Jung, C. Karsch, F. Kaczmarek, O. Laermann, E. Mawhinney, R. D. Miao, C. Petreczky, P. Petrov, K. Schmidt, C. Soeldner, W. Umeda, T. TI QCD equation of state with almost physical quark masses SO PHYSICAL REVIEW D LA English DT Article ID FREE-ENERGY; HIGH-TEMPERATURE; FLAVOR QCD; THERMODYNAMICS; TRANSITION; SPECTRUM; FERMIONS; LOOP AB We present results on the equation of state in QCD with two light quark flavors and a heavier strange quark. Calculations with improved staggered fermions have been performed on lattices with temporal extent N(tau)=4 and 6 on a line of constant physics with almost physical quark mass values; the pion mass is about 220 MeV, and the strange quark mass is adjusted to its physical value. High statistics results on large lattices are obtained for bulk thermodynamic observables, i.e. pressure, energy and entropy density, at vanishing quark chemical potential for a wide range of temperatures, 140 MeV <= T <= 800 MeV. We present a detailed discussion of finite cutoff effects which become particularly significant for temperatures larger than about twice the transition temperature. At these high temperatures we also performed calculations of the trace anomaly on lattices with temporal extent N(tau)=8. Furthermore, we have performed an extensive analysis of zero temperature observables including the light and strange quark condensates and the static quark potential at zero temperature. These are used to set the temperature scale for thermodynamic observables and to calculate renormalized observables that are sensitive to deconfinement and chiral symmetry restoration and become order parameters in the infinite and zero quark mass limits, respectively. C1 [Cheng, M.; Christ, N. H.; Mawhinney, R. D.] Columbia Univ, Dept Phys, New York, NY 10027 USA. [Christ, N. H.] Tata Inst Fundamental Res, Dept Theoret Phys, Bombay 400005, Maharashtra, India. [Van der Heide, J.; Karsch, F.; Kaczmarek, O.; Laermann, E.; Miao, C.] Univ Bielefeld, Fak Phys, D-33615 Bielefeld, Germany. [Jung, C.; Karsch, F.; Petreczky, P.; Schmidt, C.; Soeldner, W.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. [Petreczky, P.] Brookhaven Natl Lab, RIKEN BNL, Res Ctr, Upton, NY 11973 USA. [Petrov, K.] Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen, Denmark. [Umeda, T.] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058571, Japan. RP Cheng, M (reprint author), Columbia Univ, Dept Phys, New York, NY 10027 USA. RI Kaczmarek, Olaf/E-9932-2011 NR 49 TC 350 Z9 353 U1 0 U2 6 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2008 VL 77 IS 1 AR 014511 DI 10.1103/PhysRevD.77.014511 PG 20 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 258JH UT WOS:000252863700071 ER PT J AU Dawson, S Jackson, CB AF Dawson, S. Jackson, C. B. TI Supersymmetric QCD corrections to associated Higgs boson-bottom quark production SO PHYSICAL REVIEW D LA English DT Article ID HADRON COLLIDERS; HEAVY QUARKS; PHENOMENOLOGY; UNIFICATION; COLLISIONS; PARTON; MODEL; MASS AB The associated production of a Higgs boson with a b quark is a discovery mode for a minimal supersymmetric standard model (MSSM) Higgs boson at large tan beta. We compute the SUSY QCD corrections from gluino and squark loops to this process and combine them with the O(alpha(2)(s)) next-to-leading order (NLO) QCD corrections to obtain reliable predictions for the rate. Finally, we compare our results with an effective Lagrangian approximation which includes only the low energy corrections from squark and gluino loops to the b (b) over bar Higgs vertices. C1 [Dawson, S.; Jackson, C. B.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Dawson, S (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. NR 38 TC 17 Z9 17 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2008 VL 77 IS 1 AR 015019 DI 10.1103/PhysRevD.77.015019 PG 13 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 258JH UT WOS:000252863700094 ER PT J AU Ejiri, S AF Ejiri, Shinji TI Existence of the critical point in finite density lattice QCD SO PHYSICAL REVIEW D LA English DT Article ID CHIRAL CRITICAL-POINT; ISOSPIN DENSITY; PHASE-TRANSITIONS; TEMPERATURE; THERMODYNAMICS; DIAGRAM; MASS AB We propose a method to probe the nature of phase transitions in lattice QCD at finite temperature and density, which is based on the investigation of an effective potential as a function of the average plaquette. We analyze data obtained in a simulation of two-flavor QCD using p4-improved staggered quarks with bare quark mass m/T=0.4 and find that a first order phase transition line appears in the high density regime for mu(q)/T greater than or similar to 2.5. We also discuss the difference between the phase structures of QCD with nonzero quark chemical potential and nonzero isospin chemical potential. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Ejiri, S (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. NR 42 TC 52 Z9 52 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2008 VL 77 IS 1 AR 014508 DI 10.1103/PhysRevD.77.014508 PG 14 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 258JH UT WOS:000252863700068 ER PT J AU Mocsy, A Petreczky, P AF Mocsy, Agnes Petreczky, Peter TI Can quarkonia survive deconfinement? SO PHYSICAL REVIEW D LA English DT Article ID BOUND-STATES; GLUON PLASMA; LATTICE QCD; SPECTRAL FUNCTIONS; HEAVY QUARKONIUM; PSI-SUPPRESSION; POLYAKOV LOOP; CROSS-SECTION; DISSOCIATION; CHARMONIUM AB We study quarkonium correlators and spectral functions at zero and finite temperature in QCD with only heavy quarks using potential models combined with perturbative QCD. First, we show that this approach can describe the quarkonium correlation function at zero temperature. Using a class of screened potentials based on lattice calculations of the static quark-antiquark free energy we calculate spectral functions at finite temperature. We find that all quarkonium states, with the exception of the 1S bottomonium, dissolve in the deconfined phase at temperatures smaller than 1.5T(c), in contradiction with the conclusions of recent studies. Despite this the temperature dependence of the quarkonium correlation functions calculated on the lattice is well reproduced in our model. We also find that even in the absence of resonances the spectral function at high temperatures is significantly enhanced over the spectral function corresponding to free quark-antiquark propagation. C1 [Mocsy, Agnes] Brookhaven Natl Lab, RIKEN BNL, Res Ctr, Upton, NY 11973 USA. [Petreczky, Peter] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Mocsy, A (reprint author), Brookhaven Natl Lab, RIKEN BNL, Res Ctr, Upton, NY 11973 USA. EM mocsy@bnl.gov; petreczk@bnl.gov NR 77 TC 111 Z9 112 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2008 VL 77 IS 1 AR 014501 DI 10.1103/PhysRevD.77.014501 PG 20 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 258JH UT WOS:000252863700061 ER PT J AU Murayama, H Nomura, Y Poland, D AF Murayama, Hitoshi Nomura, Yasunori Poland, David TI More visible effects of the hidden sector SO PHYSICAL REVIEW D LA English DT Article ID DYNAMICAL SUPERSYMMETRY BREAKING; GAUGE-THEORIES; CONFORMAL SUPERSYMMETRY; POSITIVE ENERGY; REPRESENTATIONS; SUPERGRAVITY; HIERARCHY AB There is a growing appreciation that hidden sector dynamics may affect the supersymmetry breaking parameters in the visible sector (supersymmetric standard model), especially when the dynamics is strong and superconformal. We point out that there are effects that have not been previously discussed in the literature. For example, the gaugino masses are suppressed relative to the gravitino mass. We discuss their implications in the context of various mediation mechanisms. The issues discussed include anomaly mediation with singlets, the mu (B mu) problem in gauge and gaugino mediation, and distinct mass spectra for the superparticles that have not been previously considered. C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Theoret Phys Grp, Berkeley, CA 94720 USA. RP Murayama, H (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. RI Murayama, Hitoshi/A-4286-2011; Poland, David/A-8689-2015; OI Poland, David/0000-0003-3854-2430; Nomura, Yasunori/0000-0002-1497-1479 NR 47 TC 65 Z9 65 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2008 VL 77 IS 1 AR 015005 DI 10.1103/PhysRevD.77.015005 PG 13 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 258JH UT WOS:000252863700080 ER PT J AU Pascalutsa, V Vanderhaeghen, M AF Pascalutsa, Vladimir Vanderhaeghen, Marc TI Chiral effective-field theory in the Delta(1232) region. II. Radiative pion photoproduction SO PHYSICAL REVIEW D LA English DT Article ID PERTURBATION-THEORY; MAGNETIC-MOMENT; PROTON BREMSSTRAHLUNG; RESONANCE; BARYONS; NUCLEI AB We present a theoretical study of the radiative pion photoproduction on the nucleon (gamma N ->pi N gamma(')) in the Delta-resonance region, with the aim to determine the magnetic dipole moment (MDM) of the Delta(+)(1232). The study is done within the framework of chiral effective-field theory, where the expansion is performed (to next-to-leading order) in the delta power-counting scheme, an extension of chiral perturbation theory to the Delta-resonance energy region. We present the results for the absorptive part of the Delta MDM, as well as perform a sensitivity study of the dependence of gamma N ->pi N gamma(') observables on the real part of the Delta MDM. We find that an asymmetry for circular polarization of the photon beam may provide a model-independent way to measure the Delta MDM. C1 [Pascalutsa, Vladimir] European Ctr Theoret Studies Nucl Phys & Related, I-38050 Villazzano, TN, Italy. [Vanderhaeghen, Marc] Coll William & Mary, Dept Phys, Williamsburg, VA 23187 USA. [Vanderhaeghen, Marc] Ctr Theory, Jefferson Lab, Newport News, VA 23606 USA. RP Pascalutsa, V (reprint author), European Ctr Theoret Studies Nucl Phys & Related, Villa Tambosi, I-38050 Villazzano, TN, Italy. EM vlad@ect.it; marcvdh@jlab.org NR 33 TC 18 Z9 18 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2008 VL 77 IS 1 AR 014027 DI 10.1103/PhysRevD.77.014027 PG 16 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 258JH UT WOS:000252863700049 ER PT J AU Stevens, T Johnson, MB Kisslinger, LS Henley, EM Hwang, WYP Burkardt, M AF Stevens, Trevor Johnson, Mikkel B. Kisslinger, Leonard S. Henley, Ernest M. Hwang, W. -Y Pauchy Burkardt, Matthias TI Role of charged gauge fields in generating magnetic seed fields in bubble collisions during the cosmological electroweak phase transition SO PHYSICAL REVIEW D LA English DT Article ID TEMPERATURE; MSSM; BARYOGENESIS; MODEL AB We calculate the magnetic field generated during bubble collisions in a first-order electroweak phase transition that may occur for some choices of parameters in the minimal supersymmetric standard model. We derive equations of motion from the electroweak Lagrangian that couple the Higgs field and the gauge fields of the standard model sector. We show that for sufficiently gentle collisions, where the Higgs field is relatively unperturbed in the bubble overlap region, the equations of motion can be linearized so that in the absence of fermions the charged W(+/-) fields are the source of the electromagnetic current for generating the seed fields. Solutions of the equations of motion for the charged gauge fields and Maxwell's equations for the magnetic field in O(1,2) space-time symmetry are expressed in closed form by applying boundary conditions at the time of collision. Our results indicate that the magnetic fields generated by charged W(+/-) fields in the collision are comparable to those found in previous work. The magnetic fields so produced could seed galactic and extra-galactic magnetic fields observed today. C1 [Stevens, Trevor; Burkardt, Matthias] New Mexico State Univ, Dept Phys, Las Cruces, NM 88003 USA. [Johnson, Mikkel B.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Kisslinger, Leonard S.] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA. [Henley, Ernest M.] Univ Washington, Dept Phys, Seattle, WA 98195 USA. [Hwang, W. -Y Pauchy] Natl Taiwan Univ, Dept Phys, Taipei 106, Taiwan. RP Stevens, T (reprint author), New Mexico State Univ, Dept Phys, Las Cruces, NM 88003 USA. OI HWANG, W-Y/0000-0003-1563-8683 NR 26 TC 12 Z9 12 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. Rev. D PD JAN PY 2008 VL 77 IS 2 AR 023501 DI 10.1103/PhysRevD.77.023501 PG 13 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 258JK UT WOS:000252864000016 ER PT J AU Jaradat, S Brimicombe, PD Southern, C Siemianowski, SD DiMasi, E Osipov, M Pindak, R Gleeson, HF AF Jaradat, S. Brimicombe, P. D. Southern, C. Siemianowski, S. D. DiMasi, E. Osipov, M. Pindak, R. Gleeson, H. F. TI Unexpected field-induced phase transitions between ferrielectric and antiferroelectric liquid crystal structures SO PHYSICAL REVIEW E LA English DT Article ID X-RAY-SCATTERING; SMECTIC PHASES AB Liquid crystals are intriguing electrically responsive soft matter systems. We report previously unexplored field-induced changes in the structures of some frustrated liquid crystal phases and describe them theoretically. Specifically, we have discovered using resonant x-ray scattering that the four-layer intermediate smectic phase can undergo either a transition to the ferrielectric (three-layer) phase or to the ferroelectric phase, depending on temperature. Our studies of intermediate phases using electric fields offer a way to test theories that describe ferroelectricity in self-assembling fluids. C1 [Jaradat, S.; Brimicombe, P. D.; Southern, C.; Siemianowski, S. D.; Gleeson, H. F.] Univ Manchester, Sch Phys & Astron, Manchester M13 9PL, Lancs, England. [DiMasi, E.; Pindak, R.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Osipov, M.] Univ Strathclyde, Dept Math, Glasgow G1 1XH, Lanark, Scotland. RP Gleeson, HF (reprint author), Univ Manchester, Sch Phys & Astron, Manchester M13 9PL, Lancs, England. EM Helen.Gleeson@manchester.ac.uk NR 24 TC 25 Z9 25 U1 0 U2 7 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1539-3755 J9 PHYS REV E JI Phys. Rev. E PD JAN PY 2008 VL 77 IS 1 AR 010701 DI 10.1103/PhysRevE.77.010701 PN 1 PG 4 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 258IK UT WOS:000252861400005 PM 18351811 ER PT J AU Park, S AF Park, Sanghyun TI Comparison of the serial and parallel algorithms of generalized ensemble simulations: An analytical approach SO PHYSICAL REVIEW E LA English DT Article ID FREE-ENERGY DIFFERENCES; MONTE-CARLO; REPLICA-EXCHANGE; TEMPERING METHOD; SYSTEMS AB This paper addresses issues related to weights and acceptance rates in generalized ensemble simulations, while comparing two algorithms: serial (e.g., simulated tempering or expanded ensemble method) and parallel (e.g., parallel tempering or replica exchange). We derive a cumulant approximation for weights and discuss its effectiveness in practical applications. We compare the acceptance rates of the serial and parallel algorithms and prove that the serial algorithm always has higher acceptance rates. The duality between forward and backward transitions plays a crucial role in the derivations throughout the paper. C1 [Park, Sanghyun] Argonne Natl Lab, Math & Comp Sci Div, Argonne, IL 60439 USA. RP Park, S (reprint author), Argonne Natl Lab, Math & Comp Sci Div, 9700 S Cass Ave, Argonne, IL 60439 USA. EM sanghyun@mcs.anl.gov NR 20 TC 29 Z9 29 U1 0 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1539-3755 J9 PHYS REV E JI Phys. Rev. E PD JAN PY 2008 VL 77 IS 1 AR 016709 DI 10.1103/PhysRevE.77.016709 PN 2 PG 6 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 258IM UT WOS:000252861600061 PM 18351962 ER PT J AU Ziebert, F Aranson, IS AF Ziebert, Falko Aranson, Igor S. TI Rheological and structural properties of dilute active filament solutions SO PHYSICAL REVIEW E LA English DT Article ID SELF-ORGANIZATION; MICROTUBULES; MECHANICS; MOTORS; NETWORKS; POLYMERS AB The rheology and the structure of a dilute semiflexible biofilament solution, like F-actin, interacting via molecular motors is probed by molecular dynamics simulations. Oscillatory external shear is used to measure the storage and loss moduli as a function of motor activity in a range of frequencies and for low shear rates. The overall effect of the motor activity on the rheological properties is interpreted as an increase of the temperature, with the effective temperature proportional to the density of motors. However, the effect of motors on the structural properties of the solution, such as the orientation correlation function, is opposite: the motors drastically increase the orientation correlation length whereas thermal fluctuations decrease it. C1 [Ziebert, Falko; Aranson, Igor S.] Argonne Natl Lab, Argonne, IL 60439 USA. RP Ziebert, F (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Aranson, Igor/I-4060-2013 NR 31 TC 25 Z9 25 U1 3 U2 7 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1539-3755 J9 PHYS REV E JI Phys. Rev. E PD JAN PY 2008 VL 77 IS 1 AR 011918 DI 10.1103/PhysRevE.77.011918 PN 1 PG 5 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA 258IK UT WOS:000252861400081 PM 18351887 ER PT J AU Cowan, BM AF Cowan, Benjamin M. TI Three-dimensional dielectric photonic crystal structures for laser-driven acceleration SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article ID BAND AB We present the design and simulation of a three-dimensional photonic crystal waveguide for linear laser-driven acceleration in vacuum. The structure confines a synchronous speed-of-light accelerating mode in both transverse dimensions. We report the properties of this mode, including sustainable gradient and optical-to-beam efficiency. We present a novel method for confining a particle beam using optical fields as focusing elements. This technique, combined with careful structure design, is shown to have a large dynamic aperture and minimal emittance growth, even over millions of optical wavelengths. C1 [Cowan, Benjamin M.] Tech X Corp, Boulder, CO 80303 USA. [Cowan, Benjamin M.] Stanford Linear Accelerator Ctr, Menlo Pk, CA 94025 USA. RP Cowan, BM (reprint author), Tech X Corp, 5621 Arapahoe Ave, Boulder, CO 80303 USA. EM benc@txcorp.com NR 23 TC 42 Z9 42 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-4402 J9 PHYS REV SPEC TOP-AC JI Phys. Rev. Spec. Top.-Accel. Beams PD JAN PY 2008 VL 11 IS 1 AR 011301 DI 10.1103/PhysRevSTAB.11.011301 PG 9 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 287FI UT WOS:000254901900006 ER PT J AU Macek, RJ Browman, AA Ledford, JE Borden, MJ O'Hara, JF McCrady, RC Rybarcyk, LJ Spickermann, T Zaugg, TJ Pivi, MTF AF Macek, Robert J. Browman, Andrew A. Ledford, John E. Borden, Michael J. O'Hara, James F. McCrady, Rodney C. Rybarcyk, Lawrence J. Spickermann, Thomas Zaugg, Thomas J. Pivi, Mauro T. F. TI Electron cloud generation and trapping in a quadrupole magnet at the Los Alamos proton storage ring SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article AB Recent beam physics studies on the two-stream e-p instability at the LANL proton storage ring (PSR) have focused on the role of the electron cloud generated in quadrupole magnets where primary electrons, which seed beam-induced multipacting, are expected to be largest due to grazing angle losses from the beam halo. A new diagnostic to measure electron cloud formation and trapping in a quadrupole magnet has been developed, installed, and successfully tested at PSR. Beam studies using this diagnostic show that the "prompt" electron flux striking the wall in a quadrupole is comparable to the prompt signal in the adjacent drift space. In addition, the "swept" electron signal, obtained using the sweeping feature of the diagnostic after the beam was extracted from the ring, was larger than expected and decayed slowly with an exponential time constant of 50 to 100 mu s. Other measurements include the cumulative energy spectra of prompt electrons and the variation of both prompt and swept electron signals with beam intensity. Experimental results were also obtained which suggest that a good fraction of the electrons observed in the adjacent drift space for the typical beam conditions in the 2006 run cycle were seeded by electrons ejected from the quadrupole. C1 [Macek, Robert J.; Browman, Andrew A.; Ledford, John E.] TechSource Inc, Santa Fe, NM 87505 USA. [Macek, Robert J.; Browman, Andrew A.; Ledford, John E.; Borden, Michael J.; O'Hara, James F.; McCrady, Rodney C.; Rybarcyk, Lawrence J.; Spickermann, Thomas; Zaugg, Thomas J.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Pivi, Mauro T. F.] Stanford Linear Accelerator Ctr, Menlo Pk, CA 94025 USA. RP Macek, RJ (reprint author), TechSource Inc, Santa Fe, NM 87505 USA. EM macek@lanl.gov OI Macek, Robert/0000-0003-3196-0533 NR 22 TC 6 Z9 6 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-4402 J9 PHYS REV SPEC TOP-AC JI Phys. Rev. Spec. Top.-Accel. Beams PD JAN PY 2008 VL 11 IS 1 AR 010101 DI 10.1103/PhysRevSTAB.11.010101 PG 11 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 287FI UT WOS:000254901900001 ER PT J AU Smedley, J Rao, T Sekutowicz, J AF Smedley, J. Rao, T. Sekutowicz, J. TI Lead photocathodes SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article ID PHOTOEMISSION; METALS AB We present the results of our investigation of lead as a suitable photocathode material for superconducting rf injectors. Quantum efficiencies (QE) have been measured for a range of incident photon energies and compared to predictions from the three-step model of photoemission. A variety of cathode preparation methods have been used, including various lead plating techniques on a niobium substrate. The effects of operating at ambient and cryogenic temperatures and different vacuum levels on the cathode QE have also been studied. C1 [Smedley, J.; Rao, T.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Sekutowicz, J.] DESY, D-22603 Hamburg, Germany. RP Smedley, J (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 19 TC 24 Z9 24 U1 0 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-4402 J9 PHYS REV SPEC TOP-AC JI Phys. Rev. Spec. Top.-Accel. Beams PD JAN PY 2008 VL 11 IS 1 AR 013502 DI 10.1103/PhysRevSTAB.11.013502 PG 9 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 287FI UT WOS:000254901900010 ER PT J AU Stupakov, G Huang, Z AF Stupakov, G. Huang, Z. TI Space charge effect in an accelerated beam SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article AB It is usually assumed that the space charge effects in relativistic beams scale with the energy of the beam as gamma(-2), where gamma is the relativistic factor. We show that for a beam accelerated in the longitudinal direction there is an additional space charge effect in free space that scales as E/gamma, where E is the accelerating field. This field has the same origin as the "electromagnetic mass of the electron" discussed in textbooks on electrodynamics. It keeps the balance between the kinetic energy of the beam and the energy of the electromagnetic field of the beam. We then consider the effect of this field on a beam generated in an rf gun and calculate the energy spread produced by this field in the beam. C1 [Stupakov, G.; Huang, Z.] Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. RP Stupakov, G (reprint author), Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. NR 12 TC 6 Z9 6 U1 0 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-4402 J9 PHYS REV SPEC TOP-AC JI Phys. Rev. Spec. Top.-Accel. Beams PD JAN PY 2008 VL 11 IS 1 AR 014401 DI 10.1103/PhysRevSTAB.11.014401 PG 8 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 287FI UT WOS:000254901900015 ER PT J AU Thieberger, P Ahrens, L Alessi, J Benjamin, J Blaskiewicz, M Brennan, JM Brown, K Carlson, C Gardner, C Fischer, W Gassner, D Glenn, J Mac Kay, W Marr, G Roser, T Smith, K Snydstrup, L Steski, D Trbojevic, D Tsoupas, N Zajic, V Zeno, K AF Thieberger, P. Ahrens, L. Alessi, J. Benjamin, J. Blaskiewicz, M. Brennan, J. M. Brown, K. Carlson, C. Gardner, C. Fischer, W. Gassner, D. Glenn, J. Mac Kay, W. Marr, G. Roser, T. Smith, K. Snydstrup, L. Steski, D. Trbojevic, D. Tsoupas, N. Zajic, V. Zeno, K. TI Improved gold ion stripping at 0.1 and 10 GeV/nucleon for the Relativistic Heavy Ion Collider SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article ID K-VACANCY PRODUCTION; ATOMIC-COLLISIONS; CHARGE STATES; MULTIPLE IONIZATION; ELECTRON-CAPTURE; MATTER; SHELL; EXCITATION; URANIUM; ENERGY AB The four electron stripping stages leading to fully stripped gold ions in the Relativistic Heavy Ion Collider (RHIC) are briefly described. The third stripper, which removes 46 electrons from the Au31+ ions leading to heliumlike Au77+, offers the greatest challenges in terms of energy loss and induced energy spread. These problems are described in detail as well as recent advances in the design and performance of this stripper. Measurements performed with several carbon and aluminum strippers show general agreement with a semiempirical model but small systematic deviations suggest that some model adjustments may be in order. The best performance is predicted and obtained with a combined carbon-aluminum foil system. Measurements showing the enhanced performance in the alternating gradient synchrotron are described. The stripper that removes the last two electrons has also been improved and the results of relevant calculations and measurements are presented. C1 [Thieberger, P.; Ahrens, L.; Alessi, J.; Benjamin, J.; Blaskiewicz, M.; Brennan, J. M.; Brown, K.; Carlson, C.; Gardner, C.; Fischer, W.; Gassner, D.; Glenn, J.; Mac Kay, W.; Marr, G.; Roser, T.; Smith, K.; Snydstrup, L.; Steski, D.; Trbojevic, D.; Tsoupas, N.; Zajic, V.; Zeno, K.] Brookhaven Natl Lab, C A Dept, Upton, NY 11973 USA. RP Thieberger, P (reprint author), Brookhaven Natl Lab, C A Dept, Upton, NY 11973 USA. EM PT@BNL.GOV NR 32 TC 5 Z9 5 U1 2 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-4402 J9 PHYS REV SPEC TOP-AC JI Phys. Rev. Spec. Top.-Accel. Beams PD JAN PY 2008 VL 11 IS 1 AR 011001 DI 10.1103/PhysRevSTAB.11.011001 PG 12 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 287FI UT WOS:000254901900003 ER PT J AU Wang, JG Plum, MA AF Wang, J. G. Plum, M. A. TI Three-dimensional particle trajectories and waste beam losses in injection dump beam line of Spallation Neutron Source accumulation ring SO PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS LA English DT Article AB The Spallation Neutron Source ring injection dump beam line has been suffering high beam losses since its commissioning. In order to understand the mechanisms of the beam losses, we have performed 3D simulation studies of the beam line. The 3D models consist of three injection chicane dipoles and one injection dump septum magnet. The 3D particle trajectories in the models are computed. We then extend particle optics calculations to the injection dump. Our studies have clearly shown some design and operation problems, which cause beam losses in the injection dump beam line. These include incorrect chicane dipole settings, incorrect position of a chicane dipole, too small aperture of injection dump septum, and inadequate focusing downstream. This paper reports our findings and the remedies to the injection beam loss problems. C1 [Wang, J. G.; Plum, M. A.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Wang, JG (reprint author), Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA. EM jgwang@ornl.gov NR 23 TC 3 Z9 3 U1 0 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-4402 J9 PHYS REV SPEC TOP-AC JI Phys. Rev. Spec. Top.-Accel. Beams PD JAN PY 2008 VL 11 IS 1 AR 014002 DI 10.1103/PhysRevSTAB.11.014002 PG 14 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 287FI UT WOS:000254901900012 ER PT J AU Hu, QH Mori, A AF Hu, Q. H. Moeri, A. TI Radionuclide transport in fractured granite interface zones SO PHYSICS AND CHEMISTRY OF THE EARTH LA English DT Article; Proceedings Paper CT 11th International Conference on Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere CY AUG 26-31, 2007 CL Munich, GERMANY SP BMWi, Gesell Nuklear Serv, EnBW, DBE Technol, Natl Genossensch Lagerung Radioaktiver Abfalle, Forschungszentrum Karlsruhe DE Radionuclide; Diffusion; Transport; Granite; Grimsel Test Site ID GRIMSEL TEST-SITE; MATRIX DIFFUSION; GAMMA-SPECTROMETRY; SOLUTE TRANSPORT; LASER-ABLATION; ROCK; SWITZERLAND; RETARDATION; PROJECT; MODELS AB In situ radionuclide migration experiments, followed by excavation and sample characterization, were conducted in a water-conducting shear zone at the Grimsel Test Site (GTS) in Switzerland to study migration paths of radionuclides in fractured granite. In this work, a micro-scale mapping technique was applied by interfacing laser ablation sampling with inductively coupled plasma-mass spectrometry (LA-ICP-MS) to detect the small scale (micron-range) distribution of actinides in the interface zones between fractures and the granitic rock matrix. Long-lived U-234, U-235, and Np-237 were detected in flow channels, as well as in the diffusion accessible rock matrix. using the sensitive, feature-based mapping of the LA-ICP-MS technique. The retarded actinides are mainly located at the fracture walls and in the fine grained fracture filling material as well as within the immediately adjacent wallrock. The water-conducting fracture studied in this work is bounded on one side by mylonite and the other by granitic matrix regions. Actinides studied in this work did not penetrate into the mylonite side as much as into the granite matrix, most likely due to the lower porosity, the enhanced sorption capacity and the disturbed diffusion paths of the mylonite region itself. Overall, the maximum penetration depth detected with this technique for Np-237 and uranium isotopes over the field experimental time scale of about 60 days was about 10 mm in the granitic matrix, illustrating the importance of matrix diffusion in retarding radionuclide transport from the advective fractures. Laboratory tests and numerical modelling of radionuclide diffusion into granitic matrix was conducted to complement and help interpret the field results. (c) 2008 Elsevier Ltd. All rights reserved. C1 [Hu, Q. H.] Beijing Normal Univ, Coll Water Sci, Beijing 100875, Peoples R China. [Hu, Q. H.] Lawrence Livermore Natl Lab, Atmospher Earth & Energy Div, Livermore, CA 94550 USA. [Moeri, A.] Univ Bern, Inst Geol Sci, CH-3012 Bern, Switzerland. RP Hu, QH (reprint author), Beijing Normal Univ, Coll Water Sci, Xinjiekouwai St 19, Beijing 100875, Peoples R China. EM huqinhong@yahoo.com RI Hu, Qinhong/C-3096-2009 OI Hu, Qinhong/0000-0002-4782-319X NR 29 TC 4 Z9 5 U1 0 U2 13 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1474-7065 J9 PHYS CHEM EARTH JI Phys. Chem. Earth PY 2008 VL 33 IS 14-16 BP 1042 EP 1049 DI 10.1016/j.pce.2008.05.015 PG 8 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Water Resources SC Geology; Meteorology & Atmospheric Sciences; Water Resources GA 362OD UT WOS:000260206100016 ER PT J AU Dai, ZX Samper, J Wolfsberg, A Levitt, D AF Dai, Zhenxue Samper, Javier Wolfsberg, Andrew Levitt, Daniel TI Identification of relative conductivity models for water flow and solute transport in unsaturated bentonite SO PHYSICS AND CHEMISTRY OF THE EARTH LA English DT Article; Proceedings Paper CT 3rd International Meeting on Clays in Natural and Engineered Barriers for Radioactive Waste Confinement CY SEP 17-20, 2005 CL Lille, FRANCE SP French Natl Radioact Waste Management Agcy DE FEBEX bentonite; Unsaturated flow; Relative conductivity; Solute transport; Model identification; Inverse modeling ID SOIL HYDRAULIC-PROPERTIES; MULTICOMPONENT REACTIVE TRANSPORT; PARAMETER-ESTIMATION; INVERSE PROBLEM; POROUS-MEDIA; AQUIFER; SYSTEMS; STATE; INFILTRATION; METHODOLOGY AB Unsaturated compacted bentonite is the buffer material foreseen for deep geological high-level radioactive waste repositories because it provides mechanical and chemical stability, hydraulic isolation, and radionuclide retardation. FEBEX (Full-scale Engineered Barrier EXperiment) is a demonstration and research project for the engineered barrier of a high-level radioactive waste repository in crystalline rock. An inverse methodology has been applied to estimate FEBEX bentonite hydraulic parameters and identify its relative conductivity function from infiltration tests using transient cumulative water inflow and final water content data. Model identification criteria developed within the context of information theory have been used to select the best relative conductivity function among four candidates, including that of Irmay and three proposed by van Genuchten. The Irmay model provides the best fit in almost all tests and is rated the best by model identification criteria for the test having the largest number of data values. The general van Genuchten model provides the second best fit to all tests and is rated either first or second best model by identification criteria. The relevance of different relative conductivity functions for solute transport has been evaluated by comparing concentrations of two conservative tracers computed with Irmay and van Genuchten models. Concentrations computed with van Genuchten model are steeper than those computed with Irmay model at the solute front. (C) 2008 Elsevier Ltd. All rights reserved. C1 [Samper, Javier] Univ A Coruna, Escuela Tecn Super Ingn Caminos Canales & Puertos, La Coruna, Spain. [Dai, Zhenxue; Wolfsberg, Andrew; Levitt, Daniel] Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA. RP Samper, J (reprint author), Univ A Coruna, Escuela Tecn Super Ingn Caminos Canales & Puertos, La Coruna, Spain. EM daiz@lanl.gov; jsamper@udc.es; awol-f@lanl.gov RI Samper, Javier /F-7311-2016; OI Samper, Javier /0000-0002-9532-8433; Dai, Zhenxue/0000-0002-0805-7621 NR 50 TC 22 Z9 23 U1 1 U2 6 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1474-7065 J9 PHYS CHEM EARTH JI Phys. Chem. Earth PY 2008 VL 33 BP S177 EP S185 DI 10.1016/j.pce.2008.10.012 PG 9 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Water Resources SC Geology; Meteorology & Atmospheric Sciences; Water Resources GA 384KO UT WOS:000261743900022 ER PT J AU Senger, R Marschall, P Finsterle, S AF Senger, Rainer Marschall, Paul Finsterle, Stefan TI Investigation of two-phase flow phenomena associated with corrosion in an SF/HLW repository in Opalinus Clay, Switzerland SO PHYSICS AND CHEMISTRY OF THE EARTH LA English DT Article; Proceedings Paper CT 3rd International Meeting on Clays in Natural and Engineered Barriers for Radioactive Waste Confinement CY SEP 17-20, 2005 CL Lille, FRANCE SP French Natl Radioact Waste Management Agcy DE Gas generation; Canister corrosion; Opalinous Clay ID STORAGE AB Gas generation from corrosion of the waste canisters and gas accumulation in the backfilled emplacement tunnels is a key issue in the assessment of long-term radiological safety of the proposed repository for spent fuel and high-level waste (SF/HLW) sited in the Opalinus Clay formation of Northern Switzerland. Previous modeling studies indicated a significant pressure buildup in the backfilled emplacement tunnels for those sensitivity runs, where corrosion rates were high and the permeability of the Opalinus Clay was very low. As an extension to those studies, a refined process model of the canister corrosion phenomena has been developed, which accounts not only for the gas generation but also for the water consumption associated with the chemical reaction of corrosion of steel under anaerobic conditions. The simulations with the new process model indicate, that with increasing corrosion rates and decreasing host-rock permeability, pressure buildup increased, as expected. However, the simulations taking into account water consumption show that the pressure buildup is reduced compared to the simulation considering only gas generation. The pressure reduction is enhanced for lower permeability of the Opalinus Clay and for higher corrosion rates, which correspond to higher gas generations rates and higher water consumption rates. Moreover, the simulated two-phase flow patterns in the engineered barrier system (EBS) and surrounding Opalinus Clay show important differences at late time of the gas production phase as the generated gas continues to migrate outward into the surrounding host rock. For the case without water consumption, the water flow indicates overall downward flow due to a change in the overall density of the gas-fluid mixture from that based on the initially prescribed hydrostatic pressure gradient. For the case with water consumption, water flow converges toward the waste canister at a rate corresponding to the water consumption rate associated with the corrosion reaction. The water flow toward the canister is maintained even for very low permeabilities of the Opalinus clay sustaining the anaerobic corrosion of the steel canister. (C) 2008 Elsevier Ltd. All rights reserved. C1 [Senger, Rainer] INTERA Inc, Austin, TX 78757 USA. [Marschall, Paul] NAGRA, CH-5430 Wettingen, Switzerland. [Finsterle, Stefan] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Senger, R (reprint author), INTERA Inc, 1812 Ctr Creek Dr, Austin, TX 78757 USA. EM rsenger@intera.com; paul.marschall@nagra.ch; safinsterle@lbl.gov RI Finsterle, Stefan/A-8360-2009 OI Finsterle, Stefan/0000-0002-4446-9906 NR 15 TC 5 Z9 5 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1474-7065 J9 PHYS CHEM EARTH JI Phys. Chem. Earth PY 2008 VL 33 BP S317 EP S326 DI 10.1016/j.pce.2008.10.034 PG 10 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Water Resources SC Geology; Meteorology & Atmospheric Sciences; Water Resources GA 384KO UT WOS:000261743900038 ER PT J AU Lee, H Jin, H Yu, Y Glimm, J AF Lee, Hyunsun Jin, Hyeonseong Yu, Yan Glimm, James TI On validation of turbulent mixing simulations for Rayleigh-Taylor instability SO PHYSICS OF FLUIDS LA English DT Article ID FRONT TRACKING; MASS DIFFUSION; VISCOSITY; MODEL AB The purpose of this paper is to analyze the validation achieved in recent simulations of Rayleigh-Taylor unstable mixing. The simulations are already in agreement with experiment; mesh refinement or insertion of a calibrated subgrid model for mass diffusion will serve to refine this validation and possibly shed light on the role of unobserved long wavelength perturbations in the initial data. In this paper we present evidence to suggest that a subgrid model will have a barely noticeable effect on the simulation. The analysis is of independent interest, as it connects a validated simulation to common studies of mixing properties. The average molecular mixing parameter theta for the ideal and immiscible simulations is zero at a grid block level, as is required by the exact microphysics of these simulations. Averaging of data over volumes of (4 Delta x)(3) to (8 Delta x)(3) yields a conventional value theta similar to 0.8, suggesting that fluid entrainment in front tracked simulations produces a result similar to numerical mass diffusion in untracked simulations. The miscible simulations yield a nonzero theta similar to 0.8 in agreement with experimental values. We find spectra in possible approximate agreement with the Kolmogorov theory. A characteristic upturn especially in the density fluctuation spectrum at high wave numbers suggests the need for a subgrid mass diffusion model, while the small size of the upturn and the analysis of theta suggest that the magnitude of the model will not be large. We study directly the appropriate settings for a subgrid diffusion coefficient, to be inserted into simulations modeling miscible experiments. This is our most definitive assessment of the role for a subgrid model. We find that a Smagorinsky-type subgrid mass diffusion model would have a diffusion coefficient at most about 0.15% of the value of the physical mass diffusion for the (mass diffusive) experiment studied. (C) 2008 American Institute of Physics. C1 [Lee, Hyunsun; Yu, Yan; Glimm, James] SUNY Stony Brook, Dept Appl Math & Stat, Stony Brook, NY 11794 USA. [Jin, Hyeonseong] Cheju Natl Univ, Dept Math, Cheju 690756, South Korea. [Glimm, James] Brookhaven Natl Lab, Ctr Comp Sci, Upton, NY 11793 USA. RP Lee, H (reprint author), SUNY Stony Brook, Dept Appl Math & Stat, Stony Brook, NY 11794 USA. NR 29 TC 1 Z9 1 U1 0 U2 3 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 1070-6631 J9 PHYS FLUIDS JI Phys. Fluids PD JAN PY 2008 VL 20 IS 1 AR 012102 DI 10.1063/1.2832775 PG 8 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA 257TM UT WOS:000252821400006 ER PT J AU Sprague, MA Weidman, PD Macumber, S Fischer, PF AF Sprague, M. A. Weidman, P. D. Macumber, S. Fischer, P. F. TI Tailored Taylor vortices SO PHYSICS OF FLUIDS LA English DT Article ID COUETTE-FLOW; VORTEX FLOW; STABILITY AB The stability of circular Couette flow in discontinuous axisymmetric geometries is investigated using numerical simulations and physical experiments. By contouring the geometry of the inner cylinder, Taylor vortices can be made to appear in discrete sections along the length of the cylinder while adjoining sections remain stable. The disparate flows are connected by transition regions that arise from the stability of the axially nonuniform base flow state. The geometry of the inner cylinder can be tailored to produce the simultaneous onset of Taylor vortices of different wavelength in neighboring sections. In another variant, a stack of inner cylinders of common radius are made to rotate independently to produce adjacent regions of stable and unstable flow. (C) 2008 American Institute of Physics. C1 [Sprague, M. A.] Univ Calif, Sch Nat Sci, Meced, CA 95344 USA. [Weidman, P. D.] Univ Colorado, Dept Mech Engn, Boulder, CO 80309 USA. [Macumber, S.] Univ Colorado, Dept Appl Math, Boulder, CO 80309 USA. [Fischer, P. F.] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. RP Sprague, MA (reprint author), Univ Calif, Sch Nat Sci, Meced, CA 95344 USA. EM msprague@ucmerced.edu NR 21 TC 8 Z9 8 U1 0 U2 5 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 1070-6631 J9 PHYS FLUIDS JI Phys. Fluids PD JAN PY 2008 VL 20 IS 1 AR 014102 DI 10.1063/1.2831493 PG 9 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA 257TM UT WOS:000252821400011 ER PT S AU Singleton, J McDonald, RD Harrison, N AF Singleton, J. McDonald, R. D. Harrison, N. BE Lebed, AG TI High-field Magnetoresistive Effects in Reduced-Dimensionality Organic Metals and Superconductors SO PHYSICS OF ORGANIC SUPERCONDUCTORS AND CONDUCTORS SE Springer Series in Materials Science LA English DT Review; Book Chapter ID ANGLE-DEPENDENT MAGNETORESISTANCE; HIGH MAGNETIC-FIELDS; BEDT-TTF BIS(ETHYLENE-DITHIO)TETRATHIAFULVALENE; SMALL CLOSED ORBITS; FERMI-SURFACE TOPOLOGY; QUASI-2-DIMENSIONAL CONDUCTORS; ELECTRICAL-CONDUCTIVITY; QUANTUM OSCILLATIONS; CRITICAL-TEMPERATURE; ANISOTROPIC METALS AB The large charge-transfer anisotropy of quasi-one- and quasi-two-dimensional crystalline organic metals means that magnetoresistance is one of the most powerful tools for probing their bandstructure and interesting phase diagrams. Here we review various magnetoresistance phenomena that are of interest in the investigation of metallic, superconducting, and charge-density-wave organic systems. C1 [Singleton, J.; McDonald, R. D.; Harrison, N.] Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA. RP Singleton, J (reprint author), Los Alamos Natl Lab, Natl High Magnet Field Lab, TA 35,MS E536, Los Alamos, NM 87545 USA. EM jsingle@lanl.gov; rmcd@lanl.gov; nharrison@lanl.gov NR 93 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0933-033X BN 978-3-540-76667-4 J9 SPRINGER SER MATER S PY 2008 VL 110 BP 247 EP 276 D2 10.1007/978-3-540-76672-8 PG 30 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA BJM25 UT WOS:000266794800009 ER PT S AU Harrison, N McDonald, R Singleton, J AF Harrison, N. McDonald, R. Singleton, J. BE Lebed, AG TI Orbitally Quantized Density-Wave States Perturbed from Equilibrium SO PHYSICS OF ORGANIC SUPERCONDUCTORS AND CONDUCTORS SE Springer Series in Materials Science LA English DT Article; Book Chapter ID ORGANIC CONDUCTOR ALPHA-(BEDT-TTF)(2)KHG(SCN)(4); MAGNETIC-FIELDS; SURFACE-STATES; QUANTUM; SUPERCONDUCTORS; (TMTSF)2CLO4; SYSTEM; STABILITY AB We consider the effect that experimental changes in the magnetic induction B have in causing an orbitally quantized field-induced spin- or charge-density wave (FISDW or FICDW) state to depart from thermodynamic equilibrium. The competition between elastic forces of the density wave (DW) and pinning leads to the realization of a critical state that is in many ways analogous to that realized within the vortex state of type II superconductors. Such a critical state has been verified experimentally in charge-transfer salts of the composition alpha-(BEDT-TTF)(2)MHg(SCN)(4), but should be a generic property of all orbitally quantized DW phases. The metastable state consists of a balance between the DW pinning force and the Lorentz force on extended currents associated with drifting cyclotron orbits, resulting in the establishment of persistent currents throughout the bulk and to the possibility of a three-dimensional 'chiral metal' that extends deep into the interior of a crystal. C1 [Harrison, N.; McDonald, R.; Singleton, J.] Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA. RP Harrison, N (reprint author), Los Alamos Natl Lab, Natl High Magnet Field Lab, TA 35,MS E536, Los Alamos, NM 87545 USA. EM nharrison@lanl.gov; rmcd@lanl.gov; jsingle@lanl.gov NR 40 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0933-033X BN 978-3-540-76667-4 J9 SPRINGER SER MATER S PY 2008 VL 110 BP 551 EP 568 D2 10.1007/978-3-540-76672-8 PG 18 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA BJM25 UT WOS:000266794800018 ER PT J AU Amendt, P Cerjan, C Hinkel, DE Milovich, JL Park, HS Robey, HF AF Amendt, Peter Cerjan, C. Hinkel, D. E. Milovich, J. L. Park, H. -S. Robey, H. F. TI Rugby-like hohlraum experimental designs for demonstrating x-ray drive enhancement SO PHYSICS OF PLASMAS LA English DT Article ID EMISSION; TARGETS; PLASMAS AB A suite of experimental designs for the Omega laser facility [Boehly , Opt. Commun. 133, 495 (1997)] using rugby and cylindrical hohlraums is proposed to confirm the energetics benefits of rugby-shaped hohlraums over cylinders under optimal implosion symmetry conditions. Postprocessed Dante x-ray drive measurements predict a 12-17 eV (23%-36%) peak hohlraum temperature (x-ray flux) enhancement for a 1 ns flattop laser drive history. Simulated core self-emission x-ray histories also show earlier implosion times by 200-400 ps, depending on the hohlraum case-to-capsule ratio and laser-entrance-hole size. Capsules filled with 10 or 50 atm of deuterium (DD) are predicted to give in excess of 10(10) neutrons in two-dimensional hohlraum simulations in the absence of mix, enabling DD burn history measurements for the first time in indirect-drive on Omega. Capsule designs with 50 atm of D(3)He are also proposed to make use of proton slowing for independently verifying the drive benefits of rugby hohlraums. Scale-5/4 hohlraum designs are also introduced to provide further margin to potential laser-plasma-induced backscatter and hot-electron production. C1 [Amendt, Peter; Cerjan, C.; Hinkel, D. E.; Milovich, J. L.; Park, H. -S.; Robey, H. F.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Amendt, P (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. NR 21 TC 23 Z9 24 U1 0 U2 3 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD JAN PY 2008 VL 15 IS 1 AR 012702 DI 10.1063/1.2825662 PG 9 WC Physics, Fluids & Plasmas SC Physics GA 257TN UT WOS:000252821500031 ER PT J AU Davidson, RC AF Davidson, Ronald C. TI Announcement: The 2007 James Clerk Maxwell prize for plasma physics SO PHYSICS OF PLASMAS LA English DT Biographical-Item C1 Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Davidson, RC (reprint author), Princeton Plasma Phys Lab, James Forrestal Campus,POB 451, Princeton, NJ 08543 USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD JAN PY 2008 VL 15 IS 1 AR 010201 DI 10.1063/1.2813460 PG 1 WC Physics, Fluids & Plasmas SC Physics GA 257TN UT WOS:000252821500001 ER PT J AU Diamond, PH McDevitt, CJ Gurcan, OD Hahm, TS Naulin, V AF Diamond, P. H. McDevitt, C. J. Guercan, Oe. D. Hahm, T. S. Naulin, V. TI Transport of parallel momentum by collisionless drift wave turbulence SO PHYSICS OF PLASMAS LA English DT Article ID C-MOD PLASMAS; TOROIDAL ROTATION; EDGE TURBULENCE; POLOIDAL ROTATION; ENERGY-TRANSPORT; TOKAMAK PLASMA; VELOCITY-SHEAR; ELECTRIC-FIELD; CONFINEMENT; DIFFUSION AB This paper presents a novel, unified approach to the theory of turbulent transport of parallel momentum by collisionless drift waves. The physics of resonant and nonresonant off-diagonal contributions to the momentum flux is emphasized, and collisionless momentum exchange between waves and particles is accounted for. Two related momentum conservation theorems are derived. These relate the resonant particle momentum flux, the wave momentum flux, and the refractive force. A perturbative calculation, in the spirit of Chapman-Enskog theory, is used to obtain the wave momentum flux, which contributes significantly to the residual stress. A general equation for mean k(parallel to) (< k(parallel to)>) is derived and used to develop a generalized theory of symmetry breaking. The resonant particle momentum flux is calculated, and pinch and residual stress effects are identified. The implications of the theory for intrinsic rotation and momentum transport bifurcations are discussed. (c) 2008 American Institute of Physics. C1 [Diamond, P. H.; McDevitt, C. J.; Guercan, Oe. D.] Univ Calif San Diego, Ctr Astrophys & Space Sci, La Jolla, CA 92093 USA. [Hahm, T. S.] Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. [Naulin, V.] Danish Tech Univ, EURATOM Assoc, Riso Natl Lab, DK-4000 Roskilde, Denmark. RP Diamond, PH (reprint author), Univ Calif San Diego, Ctr Astrophys & Space Sci, 9500 Gilman Dr, La Jolla, CA 92093 USA. RI Naulin , Volker/A-2419-2012; Gurcan, Ozgur/A-1362-2013; OI Naulin , Volker/0000-0001-5452-9215; Gurcan, Ozgur/0000-0002-2278-1544; McDevitt, Christopher/0000-0002-3674-2909 NR 71 TC 90 Z9 90 U1 0 U2 11 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 1070-664X EI 1089-7674 J9 PHYS PLASMAS JI Phys. Plasmas PD JAN PY 2008 VL 15 IS 1 AR 012303 DI 10.1063/1.2826436 PG 21 WC Physics, Fluids & Plasmas SC Physics GA 257TN UT WOS:000252821500018 ER PT J AU Rovang, DC Bruner, N Maenchen, JE Oliver, BV Portillo, S Puetz, E Rose, DV Welch, DR AF Rovang, D. C. Bruner, N. Maenchen, J. E. Oliver, B. V. Portillo, S. Puetz, E. Rose, D. V. Welch, D. R. TI The role of ions during stable impedance operation of the immersed-B(z) diode at 4 to 5 MV (vol 14, art no 113107, 2007) SO PHYSICS OF PLASMAS LA English DT Correction C1 [Bruner, N.; Rose, D. V.; Welch, D. R.] Voss Sci, Albuquerque, NM USA. [Rovang, D. C.; Bruner, N.; Maenchen, J. E.; Oliver, B. V.; Portillo, S.; Puetz, E.; Rose, D. V.; Welch, D. R.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Rovang, DC (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM dcrovan@sandia.gov NR 1 TC 2 Z9 2 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD JAN PY 2008 VL 15 IS 1 AR 019902 DI 10.1063/1.2829024 PG 1 WC Physics, Fluids & Plasmas SC Physics GA 257TN UT WOS:000252821500063 ER PT J AU Wyman, MD Chapman, BE Ahn, JW Almagri, AF Anderson, JK Bonomo, F Brower, DL Combs, SK Craig, D Den Hartog, DJ Deng, BH Ding, WX Ebrahimi, F Ennis, DA Fiksel, G Foust, CR Franz, P Gangadhara, S Goetz, JA O'Connell, R Oliva, SP Prager, SC Reusch, JA Sarff, JS Stephens, HD Yates, T AF Wyman, M. D. Chapman, B. E. Ahn, J. W. Almagri, A. F. Anderson, J. K. Bonomo, F. Brower, D. L. Combs, S. K. Craig, D. Den Hartog, D. J. Deng, B. H. Ding, W. X. Ebrahimi, F. Ennis, D. A. Fiksel, G. Foust, C. R. Franz, P. Gangadhara, S. Goetz, J. A. O'Connell, R. Oliva, S. P. Prager, S. C. Reusch, J. A. Sarff, J. S. Stephens, H. D. Yates, T. TI High-beta, improved confinement reversed-field pinch plasmas at high density SO PHYSICS OF PLASMAS LA English DT Article ID POLOIDAL CURRENT DRIVE; MADISON SYMMETRIC TORUS; PELLET INJECTION; TRANSPORT REDUCTION; RFX; SYSTEM; MST AB In Madison Symmetric Torus [Dexter , Fusion Technol. 19, 131 (1991)] discharges where improved confinement is brought about by modification of the current profile, pellet injection has quadrupled the density, reaching n(e)=4x10(19) m(-3). Without pellet injection, the achievable density in improved confinement discharges had been limited by edge-resonant tearing instability. With pellet injection, the total beta has been increased to 26%, and the energy confinement time is comparable to that at low density. Pressure-driven local interchange and global tearing are predicted to be linearly unstable. Interchange has not yet been observed experimentally, but there is possible evidence of pressure-driven tearing, an instability usually driven by the current gradient in the reversed-field pinch. (c) 2008 American Institute of Physics. C1 [Wyman, M. D.; Chapman, B. E.; Ahn, J. W.; Almagri, A. F.; Anderson, J. K.; Craig, D.; Den Hartog, D. J.; Ebrahimi, F.; Ennis, D. A.; Fiksel, G.; Gangadhara, S.; Goetz, J. A.; O'Connell, R.; Oliva, S. P.; Prager, S. C.; Reusch, J. A.; Sarff, J. S.; Stephens, H. D.] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA. [Bonomo, F.; Franz, P.] Consorzio RFX, Corso Stati Uniti 4, I-35127 Padua, Italy. [Brower, D. L.; Deng, B. H.; Ding, W. X.; Yates, T.] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA. [Combs, S. K.; Foust, C. R.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Craig, D.] Wheaton Coll, Wheaton, IL 60187 USA. RP Wyman, MD (reprint author), Tri Alpha Energy, Rancho Santa Margarita, CA 92688 USA. EM mwyman@trialphaenergy.com NR 27 TC 13 Z9 13 U1 1 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 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD JAN PY 2008 VL 15 IS 1 AR 010701 DI 10.1063/1.2835439 PG 4 WC Physics, Fluids & Plasmas SC Physics GA 257TN UT WOS:000252821500002 ER PT J AU Yin, L Albright, BJ Bowers, KJ Daughton, W Rose, HA AF Yin, L. Albright, B. J. Bowers, K. J. Daughton, W. Rose, H. A. TI Saturation of backward stimulated scattering of laser in kinetic regime: Wavefront bowing, trapped particle modulational instability, and trapped particle self-focusing of plasma waves SO PHYSICS OF PLASMAS LA English DT Article ID HOT-SPOTS; BRILLOUIN-SCATTERING; RAMAN BACKSCATTER; DECAY INSTABILITY; PHYSICS; MODEL AB Backward stimulated Raman and Brillouin scattering (SRS and SBS) of laser are examined in the kinetic regime using particle-in-cell simulations. The SRS reflectivity measured as a function of the laser intensity in a single hot spot from two-dimensional (2D) simulations shows a sharp onset at a threshold laser intensity and a saturated level at higher intensities, as obtained previously in Trident experiments [D. S. Montgomery , Phys. Plasmas 9, 2311 (2002)]. In these simulations, wavefront bowing of electron plasma waves (ion acoustic waves) due to the trapped particle nonlinear frequency shift, which increases with laser intensity, is observed in the SRS (SBS) regime for the first time. Self-focusing from trapped particle modulational instability (TPMI) [H. A. Rose, Phys. Plasmas 12, 12318 (2005)] is shown to occur in both two- and three-dimensional SRS simulations. The key physics underlying nonlinear saturation of SRS is identified as a combination of wavefront bowing, TPMI, and self-focusing of electron plasma waves. The wavefront bowing marks the beginning of SRS saturation and self-focusing alone is sufficient to terminate the SRS reflectivity, both effects resulting from cancellation of the source term for SRS and from greatly increased dissipation rate of the electron plasm waves. Ion acoustic wave bowing also contributes to the SBS saturation. Velocity diffusion by transverse modes and rapid loss of hot electrons in regions of small transverse extent formed from self-focusing lead to dissipation of the wave energy and an increase in the Landau damping rate in spite of strong electron trapping that reduces Landau damping initially. The ranges of wavelength and growth rate associated with transverse breakup of the electron-plasma wave are also examined in 2D speckle simulations as well as in 2D periodic systems from Bernstein-Greene-Kruskal equilibrium and are compared with theory predictions. C1 [Yin, L.; Albright, B. J.; Bowers, K. J.; Daughton, W.; Rose, H. A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Yin, L (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM lyin@lanl.gov RI Daughton, William/L-9661-2013; OI Albright, Brian/0000-0002-7789-6525; Yin, Lin/0000-0002-8978-5320 NR 41 TC 35 Z9 37 U1 2 U2 17 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD JAN PY 2008 VL 15 IS 1 AR 013109 DI 10.1063/1.2825663 PG 15 WC Physics, Fluids & Plasmas SC Physics GA 257TN UT WOS:000252821500041 ER PT S AU Levine, MD AF Levine, Mark. D. BE Hafemeister, D Levi, BG Levine, MD Schwartz, P TI Energy Efficiency in China: Glorious History, Uncertain Future SO PHYSICS OF SUSTAINABLE ENERGY: USING ENERGY EFFICIENTLY AND PRODUCING IT RENEWABLY SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Short Course on Physics of Sustainable Energy CY MAR 01-02, 2008 CL Univ Calif Berkeley, Berkeley, CA SP APS Forum Phys & Soc HO Univ Calif Berkeley AB China's rapid economic growth of 10% per year has been accompanied by an annual energy growth rate of greater than 10% from 2001-2005, This in turn has led to the construction of 1 to 2 GWe of electrical generating capacity per week over the period, with the vast majority of the power plants using coal. Because of the energy growth, China has equaled the carbon consumption rate of United States at 6 billion tonnes/year in 2006, far sooner than was expected. This paper discusses the periods of energy growth and efficiency policy in China. This includes "Soviet Style" Energy Policy (1949-1980); Deng's Initial Reforms (1981-1992); Transition Period (1993 to 2001); Energy Crisis in China: 2001 to 2006, a repeat of much earlier "inglorious history; and the present efforts to return to an earlier period (Deng's Initial Reforms) in which energy growth may be more sustainable. Recommendations are given for policies to promote energy efficiency, C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. RP Levine, MD (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. NR 0 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 978-0-7354-0572-1 J9 AIP CONF PROC PY 2008 VL 1044 BP 15 EP 27 PG 13 WC Energy & Fuels; Physics, Applied SC Energy & Fuels; Physics GA BIJ29 UT WOS:000259999800002 ER PT S AU Hoffman, AR AF Hoffman, Allan R. BE Hafemeister, D Levi, BG Levine, MD Schwartz, P TI Water Security: A Growing Crisis and the Link to Energy SO PHYSICS OF SUSTAINABLE ENERGY: USING ENERGY EFFICIENTLY AND PRODUCING IT RENEWABLY SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Short Course on Physics of Sustainable Energy CY MAR 01-02, 2008 CL Univ Calif Berkeley, Berkeley, CA SP APS Forum Phys & Soc HO Univ Calif Berkeley AB This paper explores the global situation with respect to fresh water availability and the link-age between water and energy. C1 US DOE, Off Energy Efficiency & Renewable Energy, Washington, DC 20585 USA. RP Hoffman, AR (reprint author), US DOE, Off Energy Efficiency & Renewable Energy, 1000 Independence Ave, Washington, DC 20585 USA. NR 0 TC 6 Z9 6 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 978-0-7354-0572-1 J9 AIP CONF PROC PY 2008 VL 1044 BP 55 EP 63 PG 9 WC Energy & Fuels; Physics, Applied SC Energy & Fuels; Physics GA BIJ29 UT WOS:000259999800005 ER PT S AU Selkowitz, S AF Selkowitz, Stephen BE Hafemeister, D Levi, BG Levine, MD Schwartz, P TI Progress Towards Highly Efficient Windows for Zero-Energy Buildings SO PHYSICS OF SUSTAINABLE ENERGY: USING ENERGY EFFICIENTLY AND PRODUCING IT RENEWABLY SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Short Course on Physics of Sustainable Energy CY MAR 01-02, 2008 CL Univ Calif Berkeley, Berkeley, CA SP APS Forum Phys & Soc HO Univ Calif Berkeley AB Energy efficient windows could save 4 quads/ear, with an additional 1 quad/year gain from daylighting in commercial buildings. This corresponds to 13% of energy used by US buildings and 5% of all energy used by the US. The technical potential is thus very large and the economic potential is slowly becoming a reality. This paper describes the progress in energy efficient windows that employ low-emissivity glazing, electrochromic switchable coatings and other novel materials. Dynamic systems are being developed that use sensors and controls to modulate daylighting and shading contributions in response to occupancy, comfort and energy needs. Improving the energy performance of windows involves physics in a variety of application: optics, heat transfer, materials science and applied engineering. Technical solutions must also be compatible with national policy, codes and standards, economics, business practice and investment real and perceived risks, comfort, health, safety, productivity, amenities. and occupant preference and values. The challenge is to optimize energy performance by understanding and reinforcing the synergetic Coupling between these many issues. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Bldg Technol Dept, Environm Energy Technol Div, Berkeley, CA 94720 USA. RP Selkowitz, S (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Bldg Technol Dept, Environm Energy Technol Div, Berkeley, CA 94720 USA. NR 1 TC 0 Z9 0 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 978-0-7354-0572-1 J9 AIP CONF PROC PY 2008 VL 1044 BP 112 EP 123 PG 12 WC Energy & Fuels; Physics, Applied SC Energy & Fuels; Physics GA BIJ29 UT WOS:000259999800008 ER PT S AU McMahon, JE AF McMahon, James E. BE Hafemeister, D Levi, BG Levine, MD Schwartz, P TI Appliances: Designs and Standards for Sustainability SO PHYSICS OF SUSTAINABLE ENERGY: USING ENERGY EFFICIENTLY AND PRODUCING IT RENEWABLY SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Short Course on Physics of Sustainable Energy CY MAR 01-02, 2008 CL Univ Calif Berkeley, Berkeley, CA SP APS Forum Phys & Soc HO Univ Calif Berkeley AB Buildings consume 40% of US energy and produce 39% of US carbon dioxide. These numbers can be dramatically reduced with improved appliance efficiency. For example, energy use by the average new refrigerator dropped about 70% from 1974-2002, thanks to improved materials, technologies and designs. In this chapter, I review progress in gas furnaces, air conditioning and lighting, as well as the trends in refrigerators and freezers. The goal of zero net-energy buildings appears possible. In the future, buildings might consume perhaps 70% less energy than today due to efficient building components, appliances, equipment and lighting; systems integration; better controls; and behavioral changes. The remaining 30% energy needs could be Supplied by low- or no-carbon energy sources. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Energy Anal Dept, Berkeley, CA 94720 USA. RP McMahon, JE (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Energy Anal Dept, Berkeley, CA 94720 USA. NR 5 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 978-0-7354-0572-1 J9 AIP CONF PROC PY 2008 VL 1044 BP 124 EP 140 PG 17 WC Energy & Fuels; Physics, Applied SC Energy & Fuels; Physics GA BIJ29 UT WOS:000259999800009 ER PT S AU Wray, CP Sherman, MH Walker, IS Dickerhoff, DJ Federspiel, CC AF Wray, C. P. Sherman, M. H. Walker, I. S. Dickerhoff, D. J. Federspiel, C. C. BE Hafemeister, D Levi, BG Levine, MD Schwartz, P TI Heating, Ventilating, and Air-Conditioning: Recent Advances in Diagnostics and Controls to Improve Air-Handling System Performance SO PHYSICS OF SUSTAINABLE ENERGY: USING ENERGY EFFICIENTLY AND PRODUCING IT RENEWABLY SE AIP Conference Proceedings LA English DT Proceedings Paper CT Short Course on Physics of Sustainable Energy CY MAR 01-02, 2008 CL Univ Calif Berkeley, Berkeley, CA SP APS Forum Phys & Soc HO Univ Calif Berkeley AB The performance of air-handling systems in buildings needs to be improved. Many of the deficiencies result from myths and lore and a lack of understanding about the non-linear physical principles embedded in the associated technologies. By incorporating these principles, a few important efforts related to diagnostics and controls have already begun to solve some of the problems. This paper illustrates three novel solutions: one rapidly assesses duct leakage, the second configures ad hoe duct-static-pressure reset strategies, and the third identifies useful intermittent ventilation strategies. By highlighting these efforts, this paper seeks to stimulate new research and technology developments that could further improve air-handling systems. C1 [Wray, C. P.; Sherman, M. H.; Walker, I. S.; Dickerhoff, D. J.] Univ Calif Berkeley, Lawrence Berkeley Lab, 1 Cyclotron Rd,MS 90R3074, Berkeley, CA 94720 USA. [Federspiel, C. C.] Federalspiel Controls, El Cerrito, CA 94530 USA. RP Wray, CP (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, 1 Cyclotron Rd,MS 90R3074, Berkeley, CA 94720 USA. FU Assistant Secretary for Energy Efficiency and Renewable Energy; U.S. Department of Energy [DE-AC02-05CH11231]; California Institute for Energy Efficiency (CIEE); University of California; California Energy Commission's Public Interest Energy Research Program FX This work summarized in this paper was supported by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of the Building Technologies Program, U.S. Department of Energy under Contract No. DE-AC02-05CH11231; by the California Institute for Energy Efficiency (CIEE), which is a research unit of the University of California; and by the Energy Innovations Small Grants (EISG) Program, which is part of the California Energy Commissions Public Interest Energy Research Program. NR 14 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 978-0-7354-0572-1 J9 AIP CONF PROC PY 2008 VL 1044 BP 149 EP + PG 3 WC Energy & Fuels; Physics, Applied SC Energy & Fuels; Physics GA BIJ29 UT WOS:000259999800011 ER PT S AU Price, L AF Price, Lynn BE Hafemeister, D Levi, BG Levine, MD Schwartz, P TI Technologies and Policies to Improve Energy Efficiency in Industry SO PHYSICS OF SUSTAINABLE ENERGY: USING ENERGY EFFICIENTLY AND PRODUCING IT RENEWABLY SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Short Course on Physics of Sustainable Energy CY MAR 01-02, 2008 CL Univ Calif Berkeley, Berkeley, CA SP APS Forum Phys & Soc HO Univ Calif Berkeley AB The industrial sector consumes nearly 40% of annual global primary energy use and is responsible for a similar share of global energy-related carbon dioxide (CO2) emissions. Many studies and actual experience indicate that there is considerable potential to reduce the amount of energy used to manufacture most commodities, concurrently reducing CO2 emissions. With the support of strong policies and programs, energy-efficient technologies and measures can be implemented that will reduce global CO2 emissions. A number of countries, including the Netherlands, the UK, and China, have experience implementing aggressive programs to improve energy efficiency and reduce related CO2 emissions from industry. Even so. there is no silver bullet and all options must be pursued if greenhouse gas emissions are to be constrained to the level required to avoid significant negative impact-from global climate change. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Energy Anal Dept, Berkeley, CA 94720 USA. RP Price, L (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Energy Anal Dept, Berkeley, CA 94720 USA. NR 37 TC 0 Z9 0 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 978-0-7354-0572-1 J9 AIP CONF PROC PY 2008 VL 1044 BP 163 EP 175 PG 13 WC Energy & Fuels; Physics, Applied SC Energy & Fuels; Physics GA BIJ29 UT WOS:000259999800012 ER PT S AU Gadgil, A AF Gadgil, Ashok BE Hafemeister, D Levi, BG Levine, MD Schwartz, P TI Safe and Affordable Drinking Water for Developing Countries SO PHYSICS OF SUSTAINABLE ENERGY: USING ENERGY EFFICIENTLY AND PRODUCING IT RENEWABLY SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Short Course on Physics of Sustainable Energy CY MAR 01-02, 2008 CL Univ Calif Berkeley, Berkeley, CA SP APS Forum Phys & Soc HO Univ Calif Berkeley AB Safe drinking water remains inaccessible for about 1.2 billion people in the world. and the hourly toll from biological contamination of drinking water is 200 deaths mostly among children under five years of age.(1) This chapter summarizes the need for safe drinking water, the scale of the global problem, and various methods tried to address it. Then it gives the history and current status of air innovation ("UV Waterworks (TM)") developed to address this major public health challenge. It reviews water disinfection technologies applicable to achieve the desired quality of drinking water in developing countries, and specifically, the limitations overcome by one particular invention: UV Waterworks. It then briefly describes the business model and financing option than is accelerating its implementation for affordable access to safe drinking water to the unserved populations in these countries. Thus this chapter describes not only the innovation in design of a UV water disinfection system, but also innovation in the delivery model for safe drinking water, with potential for long term growth and sustainability. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. RP Gadgil, A (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Mailstop 90R3058, Berkeley, CA 94720 USA. NR 18 TC 3 Z9 3 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 978-0-7354-0572-1 J9 AIP CONF PROC PY 2008 VL 1044 BP 176 EP 191 PG 16 WC Energy & Fuels; Physics, Applied SC Energy & Fuels; Physics GA BIJ29 UT WOS:000259999800013 ER PT S AU Akbari, H AF Akbari, Hashem BE Hafemeister, D Levi, BG Levine, MD Schwartz, P TI Saving Energy and Improving Air Quality in Urban Heat Islands SO PHYSICS OF SUSTAINABLE ENERGY: USING ENERGY EFFICIENTLY AND PRODUCING IT RENEWABLY SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Short Course on Physics of Sustainable Energy CY MAR 01-02, 2008 CL Univ Calif Berkeley, Berkeley, CA SP APS Forum Phys & Soc HO Univ Calif Berkeley ID REFLECTIVE ROOFS; BUILDINGS; IMPACTS; BASIN AB Temperatures in urban areas have increased because solar energy is more strongly absorbed by additional roofs and pavements. Downtown Los Angles is now 2.5 Kelvin warmer than in the 1930s, which requires 1-1.5 GWe more electricity to cool buildings on summer days, costing an extra $100 million/year. Cool roof and pavement materials with increased reflectivity of 0.25 can lower surface temperatures by 10 K. If Los Angles urban temperatures could be reduced by 3 K, ozone concentrations could be reduced considerably. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Heat Isl Grp, Berkeley, CA 94720 USA. RP Akbari, H (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Heat Isl Grp, Berkeley, CA 94720 USA. NR 30 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 978-0-7354-0572-1 J9 AIP CONF PROC PY 2008 VL 1044 BP 192 EP 208 PG 17 WC Energy & Fuels; Physics, Applied SC Energy & Fuels; Physics GA BIJ29 UT WOS:000259999800014 ER PT S AU Meier, A AF Meier, Alan BE Hafemeister, D Levi, BG Levine, MD Schwartz, P TI Standby Energy Use in California Homes SO PHYSICS OF SUSTAINABLE ENERGY: USING ENERGY EFFICIENTLY AND PRODUCING IT RENEWABLY SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Short Course on Physics of Sustainable Energy CY MAR 01-02, 2008 CL Univ Calif Berkeley, Berkeley, CA SP APS Forum Phys & Soc HO Univ Calif Berkeley AB Many electrical devices in homes continue to draw power while switched off or not actively performing their primary function. These devices include familiar appliances, such as televisions, microwave ovens, computers, set-top boxes, mobile phone chargers, and video and audio components but also less obvious devices like dishwashers, tankless water heaters and smoke detectors. The energy use of these devices while in their low-power modes is now about 980 kWh/year (or 112 watts) per home in California, corresponding to about 13% of the state's total residential electricity use in 2006. If treated as a separate end use, low-power mode energy use is the fourth largest residential end use. About half of the electricity in the electronics end use is consumed in the low-power modes. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. RP Meier, A (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. NR 11 TC 1 Z9 1 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 978-0-7354-0572-1 J9 AIP CONF PROC PY 2008 VL 1044 BP 209 EP 216 PG 8 WC Energy & Fuels; Physics, Applied SC Energy & Fuels; Physics GA BIJ29 UT WOS:000259999800015 ER PT S AU Wenzel, T Ross, M AF Wenzel, Tom Ross, Marc BE Hafemeister, D Levi, BG Levine, MD Schwartz, P TI The Relationship between Vehicle Weight/Size and Safety SO PHYSICS OF SUSTAINABLE ENERGY: USING ENERGY EFFICIENTLY AND PRODUCING IT RENEWABLY SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Short Course on Physics of Sustainable Energy CY MAR 01-02, 2008 CL Univ Calif Berkeley, Berkeley, CA SP APS Forum Phys & Soc HO Univ Calif Berkeley AB Light-duty vehicles account for about 20% of US CO2 emissions. However, new vehicle fuel economy standards have not been significantly tightened since they were first enacted three decades ago. A historical impediment to imposing tougher fuel economy standards has been the long-standing perception that reducing the mass of a car or truck would make it more dangerous to its occupants in a crash. One often hears that this perception is dictated by "simple physics:" that, all else being equal, you are at greater risk. in a lighter vehicle than in a heavier one. Our research on driver fatality risk has found that, when it comes to vehicle safety, all else is never equal. Vehicle mass is not the most important variable in determining occupant safety, not even in frontal crashes between two vehicles. You are at no greater risk driving an average car than you are driving a much heavier (and less fuel efficient) truck-based SUV. And larger and heavier truck-based SUVs and pickups impose enormous risks on car occupants. We summarize the most recent research on the interplay between vehicle weight size and safety, and what the implications are for new state and federal standards to reduce vehicle CO2 emissions. C1 [Wenzel, Tom] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Wenzel, T (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, 1 Cyclotron Rd,90R4000, Berkeley, CA 94720 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 978-0-7354-0572-1 J9 AIP CONF PROC PY 2008 VL 1044 BP 251 EP 265 PG 15 WC Energy & Fuels; Physics, Applied SC Energy & Fuels; Physics GA BIJ29 UT WOS:000259999800018 ER PT S AU Chu, S AF Chu, Steven BE Hafemeister, D Levi, BG Levine, MD Schwartz, P TI The Science of Photons to Fuel SO PHYSICS OF SUSTAINABLE ENERGY: USING ENERGY EFFICIENTLY AND PRODUCING IT RENEWABLY SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Short Course on Physics of Sustainable Energy CY MAR 01-02, 2008 CL Univ Calif Berkeley, Berkeley, CA SP APS Forum Phys & Soc HO Univ Calif Berkeley AB Transportation consumes 28% of US energy, and 60% of that is Consumed by personal transportation. Because liquid fuels have high energy density, they will be the dominant fuel, until batteries have improved enough to support plug-in cars on an economic basis. Fifty million acres of energy crops Plus agricultural wastes can produce roughly half of all of current US consumption of gasoline. Although ethanol from corn has received much attention as a possible substitute for gasoline, other biofuels feedstocks such as perennial grasses and agricultural wastes have greater potential for a much more environmentally friendly substitute for oil. The advantages of grasses over food crops such as corn include higher yield for given water and nutrient inputs, lower soil depletion and fertilizer run-off pollution. The major challenge in biofuels production from perennials is to improve the efficiency of conversion of the plant material to fuel. This paper describes some of the research that is being done to make biofuels from cellulose. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Chu, S (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NR 0 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 978-0-7354-0572-1 J9 AIP CONF PROC PY 2008 VL 1044 BP 266 EP 282 PG 17 WC Energy & Fuels; Physics, Applied SC Energy & Fuels; Physics GA BIJ29 UT WOS:000259999800019 ER PT S AU Srinivasan, V AF Srinivasan, Venkat BE Hafemeister, D Levi, BG Levine, MD Schwartz, P TI Batteries for Vehicular Applications SO PHYSICS OF SUSTAINABLE ENERGY: USING ENERGY EFFICIENTLY AND PRODUCING IT RENEWABLY SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Short Course on Physics of Sustainable Energy CY MAR 01-02, 2008 CL Univ Calif Berkeley, Berkeley, CA SP APS Forum Phys & Soc HO Univ Calif Berkeley ID LI-ION BATTERIES; ANODES; SI AB This paper will describe battery technology as it relates to use in vehicular applications, including hybrid-electric vehicles (HEV), electric vehicles (EV), and Plug-in-hybrid-electric vehicles (PHEV). The present status of rechargeable batteries, the requirements for each application, and the scientific stumbling blocks that stop batteries from being commercialized for these applications will be discussed. Focus will be on the class of batteries referred to as lithium batteries and the various chemistries that are the most promising for these applications, While Li-ion is expected in HEVs in the very near future, use in PHEVs are expected to be more gradual and dependent on solving the life, safety, and cost challenges. Finally, batteries for EVs remain problematic because of the range and charging-time issues. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Srinivasan, V (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, 1 Cyclotron Rd,MS 70R 0108B, Berkeley, CA 94720 USA. NR 14 TC 11 Z9 11 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 978-0-7354-0572-1 J9 AIP CONF PROC PY 2008 VL 1044 BP 283 EP 296 PG 14 WC Energy & Fuels; Physics, Applied SC Energy & Fuels; Physics GA BIJ29 UT WOS:000259999800020 ER PT S AU Crabtree, GW Lewis, NS AF Crabtree, George W. Lewis, Nathan S. BE Hafemeister, D Levi, BG Levine, MD Schwartz, P TI Solar Energy Conversion SO PHYSICS OF SUSTAINABLE ENERGY: USING ENERGY EFFICIENTLY AND PRODUCING IT RENEWABLY SE AIP Conference Proceedings LA English DT Proceedings Paper CT Short Course on Physics of Sustainable Energy CY MAR 01-02, 2008 CL Univ Calif Berkeley, Berkeley, CA SP APS Forum Phys & Soc HO Univ Calif Berkeley ID THERMOELECTRIC FIGURE; CELLS; HYDROGEN; MERIT; ELECTRICITY; EFFICIENCY; DEVICES; CHARGE AB If solar energy is to become a practical alternative to fossil fuels, we must have efficient ways to convert photons into electricity, fuel, and heat. The need for better conversion technologies is a driving force behind many recent developments in biology, materials, and especially nanoscience. C1 [Crabtree, George W.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Crabtree, GW (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 25 TC 2 Z9 2 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 978-0-7354-0572-1 J9 AIP CONF PROC PY 2008 VL 1044 BP 309 EP 321 PG 13 WC Energy & Fuels; Physics, Applied SC Energy & Fuels; Physics GA BIJ29 UT WOS:000259999800022 ER PT S AU Mehos, M AF Mehos, Mark BE Hafemeister, D Levi, BG Levine, MD Schwartz, P TI Concentrating Solar Power SO PHYSICS OF SUSTAINABLE ENERGY: USING ENERGY EFFICIENTLY AND PRODUCING IT RENEWABLY SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Short Course on Physics of Sustainable Energy CY MAR 01-02, 2008 CL Univ Calif Berkeley, Berkeley, CA SP APS Forum Phys & Soc HO Univ Calif Berkeley AB Concentrating Solar Power (CSP) has the potential to contribute significantly to the generation of electricity by renewable energy resources in the U.S.. Thermal storage can extend the duty cycle of CSP beyond daytime hours to early evening where the value of electricity is often the highest. The potential solar resource for the southwest U.S. is identified, along with the need to add power lines to bring the power to consumers. CSP plants in the U.S. and abroad are described. The CSP cost of electricity at the busbar is discussed. With current incentives, CSP is approaching competiveness with conventional gas-fired systems during peak-demand hours when the price of electricity is the highest. It is projected that a mature CSP industry of over 4 GWe will be able to reduce the energy cost by about 50%, and that U.S capacity could be 120 GW by 2050. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Mehos, M (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 0 TC 1 Z9 1 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 978-0-7354-0572-1 J9 AIP CONF PROC PY 2008 VL 1044 BP 331 EP 339 PG 9 WC Energy & Fuels; Physics, Applied SC Energy & Fuels; Physics GA BIJ29 UT WOS:000259999800024 ER PT S AU Thresher, R Robinson, M Veers, P AF Thresher, Robert Robinson, Michael Veers, Paul BE Hafemeister, D Levi, BG Levine, MD Schwartz, P TI The Status and Future of Wind Energy Technology SO PHYSICS OF SUSTAINABLE ENERGY: USING ENERGY EFFICIENTLY AND PRODUCING IT RENEWABLY SE AIP Conference Proceedings LA English DT Proceedings Paper CT Short Course on Physics of Sustainable Energy CY MAR 01-02, 2008 CL Univ Calif Berkeley, Berkeley, CA SP APS Forum Phys & Soc HO Univ Calif Berkeley C1 [Thresher, Robert; Robinson, Michael] Natl Renewable Energy Lab, Natl Wind Technol Ctr, Golden, CO 80401 USA. [Veers, Paul] Wind Energy Technol Dept, Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Thresher, R (reprint author), Natl Renewable Energy Lab, Natl Wind Technol Ctr, Golden, CO 80401 USA. NR 6 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 978-0-7354-0572-1 J9 AIP CONF PROC PY 2008 VL 1044 BP 340 EP + PG 2 WC Energy & Fuels; Physics, Applied SC Energy & Fuels; Physics GA BIJ29 UT WOS:000259999800025 ER PT S AU Myer, LR AF Myer, Larry R. BE Hafemeister, D Levi, BG Levine, MD Schwartz, P TI Carbon Capture and Geologic Storage SO PHYSICS OF SUSTAINABLE ENERGY: USING ENERGY EFFICIENTLY AND PRODUCING IT RENEWABLY SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Short Course on Physics of Sustainable Energy CY MAR 01-02, 2008 CL Univ Calif Berkeley, Berkeley, CA SP APS Forum Phys & Soc HO Univ Calif Berkeley AB This paper will briefly discuss carbon capture and storage options, mechanisms and costs. Risks from geologic storage risks will be addressed and the need for monitoring. Sonic current field studies will be described. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA. RP Myer, LR (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA. 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 978-0-7354-0572-1 J9 AIP CONF PROC PY 2008 VL 1044 BP 366 EP 375 PG 10 WC Energy & Fuels; Physics, Applied SC Energy & Fuels; Physics GA BIJ29 UT WOS:000259999800027 ER PT S AU Gyuk, I AF Gyuk, Imre BE Hafemeister, D Levi, BG Levine, MD Schwartz, P TI Energy Storage for a Greener Grid SO PHYSICS OF SUSTAINABLE ENERGY: USING ENERGY EFFICIENTLY AND PRODUCING IT RENEWABLY SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Short Course on Physics of Sustainable Energy CY MAR 01-02, 2008 CL Univ Calif Berkeley, Berkeley, CA SP APS Forum Phys & Soc HO Univ Calif Berkeley AB Energy Storage is an emerging technology with potential applications throughout the grid. Storage can provide power quality, frequency regulation, and renewable smoothing. It can increase asset utilization for generation, transmission, substations, and distribution. Storage can help in reducing peak loads, and making variable renewable energy more dispatchable. The article presents the technology of electrical storage, provides examples of different types of applications, and analyses the rationale for introducing storage. Storage makes the grid greener. more efficient, and more reliable. C1 US DOE, Energy Storage Res Program, Washington, DC 20585 USA. RP Gyuk, I (reprint author), US DOE, Energy Storage Res Program, 1000 Independence Ave, Washington, DC 20585 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 978-0-7354-0572-1 J9 AIP CONF PROC PY 2008 VL 1044 BP 376 EP 392 PG 17 WC Energy & Fuels; Physics, Applied SC Energy & Fuels; Physics GA BIJ29 UT WOS:000259999800028 ER PT J AU Saxena, A Tyagi, R AF Saxena, Anand Tyagi, Rajiv TI Islam, science, and free and open inquiry SO PHYSICS TODAY LA English DT Letter C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Saxena, A (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. EM asaxena@bnl.gov; rtyagi@bnl.gov NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0031-9228 J9 PHYS TODAY JI Phys. Today PD JAN PY 2008 VL 61 IS 1 BP 13 EP 13 PG 1 WC Physics, Multidisciplinary SC Physics GA 249YB UT WOS:000252265600009 ER PT J AU Glaeser, RM AF Glaeser, Robert M. TI Cryo-electron microscopy of biological nanostructures SO PHYSICS TODAY LA English DT Article ID ELECTRON-MICROSCOPY C1 [Glaeser, Robert M.] Univ Calif Berkeley, Berkeley, CA 94720 USA. [Glaeser, Robert M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA. RP Glaeser, RM (reprint author), Univ Calif Berkeley, Berkeley, CA 94720 USA. NR 11 TC 14 Z9 14 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0031-9228 J9 PHYS TODAY JI Phys. Today PD JAN PY 2008 VL 61 IS 1 BP 48 EP 54 DI 10.1063/1.2835153 PG 7 WC Physics, Multidisciplinary SC Physics GA 249YB UT WOS:000252265600026 ER PT J AU Crease, RP AF Crease, Robert P. TI Critical point the last of its breed SO PHYSICS WORLD LA English DT Editorial Material C1 [Crease, Robert P.] SUNY Stony Brook, Dept Philosophy, Stony Brook, NY USA. [Crease, Robert P.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Crease, RP (reprint author), SUNY Stony Brook, Dept Philosophy, Stony Brook, NY USA. EM rcrease@notes.cc.sunysb.edu NR 0 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0953-8585 J9 PHYS WORLD JI Phys. World PD JAN PY 2008 VL 21 IS 1 BP 16 EP 16 PG 1 WC Physics, Multidisciplinary SC Physics GA 253ZQ UT WOS:000252556500017 ER PT J AU Sittler, EC Andre, N Blanc, M Burger, M Johnson, RE Coates, A Rymer, A Reisenfeld, D Thomsen, MF Persoon, A Dougherty, M Smith, HT Baragiola, RA Hartle, RE Chornay, D Shappirio, MD Simpson, D McComas, DJ Young, DT AF Sittler, E. C. Andre, N. Blanc, M. Burger, M. Johnson, R. E. Coates, A. Rymer, A. Reisenfeld, D. Thomsen, M. F. Persoon, A. Dougherty, M. Smith, H. T. Baragiola, R. A. Hartle, R. E. Chornay, D. Shappirio, M. D. Simpson, D. McComas, D. J. Young, D. T. TI Ion and neutral sources and sinks within Saturn's inner magnetosphere: Cassini results SO PLANETARY AND SPACE SCIENCE LA English DT Article; Proceedings Paper CT General Assembly of the European-Geosciences-Union CY APR 02-07, 2006 CL Vienna, AUSTRIA SP European Geosci Union DE saturn; magnetosphere; plasmasphere; plasma; magnetic fields; ion-neutral sources ID POLARIZATION ELECTRIC-FIELD; ENCELADUS; PLASMA; ATMOSPHERE; DIFFUSION; PLUME; RING; OH AB Using ion-electron fluid parameters derived from Cassini Plasma Spectrometer (CAPS) observations within Saturn's inner magnetosphere as presented in Sittler et al. [2006a. Cassini observations of Saturn's inner plasmasphere: Saturn orbit insertion results. Planet. Space Sci., 54, 1197-1210], one can estimate the ion total flux tube content, NIONL2, for protons, H+, and water group ions, W+, as a function of radial distance or dipole L shell. In Sittler et al. [2005. Preliminary results on Saturn's inner plasmasphere as observed by Cassini: comparison with Voyager. Geophys. Res. Lett. 32(14), L14S04), it was shown that protons and water group ions dominated the plasmasphere composition. Using the ion-electron fluid parameters as boundary condition for each L shell traversed by the Cassini spacecraft, we self-consistently solve for the ambipolar electric field and the ion distribution along each of those field lines. Temperature anisotropies from Voyager plasma observations are used with (T-perpendicular to/T-II)(w+)similar to 5 and (T-perpendicular to/T-II)(H+)similar to 2. The radio and plasma wave science (RPWS) electron density observations from previous publications are used to indirectly confirm usage of the above temperature anisotropies for water group ions and protons. In the case of electrons we assume they are isotropic due to their short scattering time scales. When the above is done, our calculation show NIONL2 for H+ and W+ peaking near Dione's L shell with values similar to that found from Voyager plasma observations. We are able to show that water molecules are the dominant source of ions within Saturn's inner magnetosphere. We estimate the ion production rate S-ION similar to 10(27) ions/s as function of dipole L using NH+, Nw+ and the time scale for ion loss due to radial transport tau(D) and ion-electron recombination tau(REC). The ion production shows localized peaks near the L shells of Tethys, Dione and Rhea, but not Enceladus. We then estimate the neutral production rate, S-w, from our ion production rate, S-ION, and the time scale for loss of neutrals by ionization, tau(ION), and charge exchange, tau(CH). The estimated source rate for water molecules shows a pronounced peak near Enceladus' L shell L similar to 4, with a value S-w similar to 2 x 10(28) mol/s. (c) 2007 Elsevier Ltd. All rights reserved. C1 [Sittler, E. C.; Burger, M.; Hartle, R. E.; Chornay, D.; Shappirio, M. D.; Simpson, D.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. [Andre, N.] ESTEC, Noordwijk, Netherlands. [Blanc, M.] Ctr Etudes Spatial Rayounnements, Toulouse, France. [Johnson, R. E.; Smith, H. T.; Baragiola, R. A.] Univ Virginia, Charlottesville, VA 22903 USA. [Rymer, A.] Johns Hopkins Appl Phys Labs, Baltimore, MD USA. [Reisenfeld, D.] Univ Montana, Missoula, MT 59812 USA. [Thomsen, M. F.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Persoon, A.] Univ Iowa, Iowa City, IA 52242 USA. [Dougherty, M.] Univ London Imperial Coll Sci & Technol, Blackett Lab, London, England. [McComas, D. J.; Young, D. T.] SW Res Inst, San Antonio, TX USA. RP Sittler, EC (reprint author), NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. EM Edward.C.Sittler@nasa.gov RI Coates, Andrew/C-2396-2008; Reisenfeld, Daniel/F-7614-2015; Smith, Howard/H-4662-2016 OI Coates, Andrew/0000-0002-6185-3125; Smith, Howard/0000-0003-3537-3360 NR 36 TC 82 Z9 82 U1 1 U2 6 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0032-0633 J9 PLANET SPACE SCI JI Planet Space Sci. PD JAN PY 2008 VL 56 IS 1 BP 3 EP 18 DI 10.1016/j.pss.2007.06.006 PG 16 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 261UN UT WOS:000253105600002 ER PT J AU Watanabe, H Kende, H Hayakawa, T Saigusa, M AF Watanabe, Hajime Kende, Hans Hayakawa, Toshibiko Saigusa, Masahiko TI Cloning of a cytochrome P450 gene induced by ethylene treatment in deepwater rice (Oryza sativa L.) SO PLANT PRODUCTION SCIENCE LA English DT Article DE cytochrome P450; deepwater rice; differential display; ethylene; internode elongation. ID POLYMERASE-CHAIN-REACTION; MESSENGER-RNA; DIFFERENTIAL DISPLAY; GIBBERELLIN; ELONGATION; PLANT; CDNA; SEQUENCES C1 [Watanabe, Hajime] Tohoku Univ, Grad Sch Agr Sci, Oosaki, Miyagi 9896711, Japan. [Kende, Hans] Michigan State Univ, MSU DOE Plant Res Lab, E Lansing, MI 48824 USA. [Hayakawa, Toshibiko] Tohoku Univ, Grad Sch Agr Sci, Div Life Sci, Sendai, Miyagi 9818555, Japan. [Saigusa, Masahiko] Toyohashi Univ Technol, Aichi 4118580, Japan. RP Watanabe, H (reprint author), Tohoku Univ, Grad Sch Agr Sci, Oosaki, Miyagi 9896711, Japan. EM watanabe@bios.tohoku.ac.jp NR 17 TC 1 Z9 1 U1 0 U2 4 PU CROP SCIENCE SOC JAPAN PI TOKYO PA UNIV TOKYO-FACULTY AGRICULTURE BUNKYO-KU, TOKYO, 113, JAPAN SN 1343-943X J9 PLANT PROD SCI JI Plant. Prod. Sci. PD JAN PY 2008 VL 11 IS 1 BP 124 EP 126 DI 10.1626/pps.11.124 PG 3 WC Agronomy SC Agriculture GA 255FD UT WOS:000252641900015 ER PT S AU Kus, A Dinklage, A Preuss, R Ascasibar, E Harris, JH Okamura, S Sano, F Stroth, U Talmadge, J Yamada, H AF Kus, A. Dinklage, A. Preuss, R. Ascasibar, E. Harris, J. H. Okamura, S. Sano, F. Stroth, U. Talmadge, J. Yamada, H. BE Hartfuss, HJ Dudeck, M Musielok, J Sadowski, MJ TI Cluster analysis of the International Stellarator Confinement Database SO PLASMA 2007 SE AIP Conference Proceedings LA English DT Proceedings Paper CT International Conference on Research and Applications of Plasmas/4th German-Polish Conference on Plasma Diagnostics for Fusion and Applications/6th French-Polish Seminar on Thermal Plasma in Space and Laboratory (PLASMA 2007) CY OCT 16-19, 2007 CL Greifswald, GERMANY DE ISCDB; ISS95; ISS04; cluster analysis; hierarchical clustering ID ENERGY CONFINEMENT AB Heterogeneous structure of collected data is one of the problems that occur during derivation of scalings for energy confinement time, and whose analysis tourns out to be wide and complicated matter. The International Stellarator Confinement Database [1], shortly ISCDB, comprises in its latest version 21 a total of 3647 observations from 8 experimental devices, 2067 therefrom beeing so far completed for upcoming analyses. For confinement scaling studies 1933 observation were chosen as the standard dataset. Here we describe a statistical method of cluster analysis for identification of possible cohesive substructures in ISDCB and present some preliminary results. C1 [Kus, A.; Dinklage, A.; Preuss, R.] EURATOM IPP Assoc, Max Planck Inst Plasmaphys, Greifswald, Germany. [Ascasibar, E.] EURATOM CIEMAT Assoc, Lab Nac Fus, Madrid, Spain. [Harris, J. H.] Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA. [Harris, J. H.] Australian Natl Univ, Canberra, ACT 0200, Australia. [Okamura, S.; Yamada, H.] Natl Inst Fus Sci, Toki, Gifu, Japan. [Sano, F.] Kyoto Univ, Kyoto 6068501, Japan. [Stroth, U.] Univ Stuttgart, Stuttgart, Germany. [Talmadge, J.] Univ Wisconsin, Madison, WI 53706 USA. RP Kus, A (reprint author), EURATOM IPP Assoc, Max Planck Inst Plasmaphys, Greifswald, Germany. RI Ascasibar, Enrique/B-7498-2014 OI Ascasibar, Enrique/0000-0001-8124-0994 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 978-0-7354-0512-7 J9 AIP CONF PROC PY 2008 VL 993 BP 47 EP + PG 2 WC Physics, Fluids & Plasmas SC Physics GA BHO81 UT WOS:000254902600008 ER PT S AU Garkusha, IE Chebotarev, VV Hassanein, A Ladygina, MS Marchenko, AK Petrov, YV Solyakov, DG Tereshin, VI Trubchaninov, SA Byrka, OV AF Garkusha, I. E. Chebotarev, V. V. Hassanein, A. Ladygina, M. S. Marchenko, A. K. Petrov, Yu. V. Solyakov, D. G. Tereshin, V. I. Trubchaninov, S. A. Byrka, O. V. BE Hartfuss, HJ Dudeck, M Musielok, J Sadowski, MJ TI Dynamics of xenon plasma streams generated by magnetoplasma compressor SO PLASMA 2007 SE AIP Conference Proceedings LA English DT Proceedings Paper CT International Conference on Research and Applications of Plasmas/4th German-Polish Conference on Plasma Diagnostics for Fusion and Applications/6th French-Polish Seminar on Thermal Plasma in Space and Laboratory (PLASMA 2007) CY OCT 16-19, 2007 CL Greifswald, GERMANY DE dense plasma stream; EUV radiation; magnetoplasma compressor; xenon AB The paper presents the investigations of parameters of xenon plasma streams generated by magnetoplasma compressor (MPC) of compact geometry with conical-shaped electrodes and pulsed gas supply. Discharge characteristics and dynamics of the plasma streams, generated by MPC in different operation modes are analyzed. First results of Xe plasma radiation measurements in EUV wave range, obtained with AXUV diodes are presented. C1 [Garkusha, I. E.; Chebotarev, V. V.; Ladygina, M. S.; Marchenko, A. K.; Petrov, Yu. V.; Solyakov, D. G.; Tereshin, V. I.; Trubchaninov, S. A.; Byrka, O. V.] NSC KIPT, Inst Plasma Phys, UA-61108 Kharkov, Ukraine. [Hassanein, A.] Argonne Natl Lab, Argonne, IL 60439 USA. RP Garkusha, IE (reprint author), NSC KIPT, Inst Plasma Phys, UA-61108 Kharkov, Ukraine. OI Garkusha, Igor/0000-0001-6538-6862 FU Science and Techmology Center in Ukraine [3378] FX This work has been supported in part by Science and Techmology Center in Ukraine within the project #3378 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 978-0-7354-0512-7 J9 AIP CONF PROC PY 2008 VL 993 BP 341 EP + PG 2 WC Physics, Fluids & Plasmas SC Physics GA BHO81 UT WOS:000254902600071 ER PT S AU Csanak, G Kilcrease, DP Fursa, DV Bray, I AF Csanak, G. Kilcrease, D. P. Fursa, D. V. Bray, I. BE Fujimoto, T Iwamae, A TI Definition of Cross Sections for the Creation, Destruction, and Transfer of Atomic Multipole Moments by Electron Scattering: Quantum Mechanical Treatment SO PLASMA POLARIZATION SPECTROSCOPY SE Springer Series on Atomic Optical and Plasma Physics LA English DT Article; Book Chapter ID RESONANCE FLUORESCENCE; MAGNETIC-FIELD; COLLISIONS; POLARIZATION; RELAXATION; DEPOLARIZATION AB The rates for the creation, destruction, and transfer of atomic multipole moments by heavy-particle scattering have been studied for many years by Omont [1], by D'yakonov and Perel [2], and by Petrashen, Rebane, and Rebane [3-12] using semiclassical scattering theory along with the straight-line trajectory assumption for the scattering particle. This method has been adopted for electron scattering by Fujimoto et al. [13] and Fujimoto and Kazantsev [14]. These latter authors have given definitions of alignment creation, destruction, and transfer cross sections for both elastic and inelastic electron scattering within the semiclassical straigth-line trajectory approximation. The same practice was followed in the preceding Chap. 4. In the case of inelastic scattering, Kazantsev et al. [15,16] gave a quantum-mechanical definition of the alignment-creation cross section, which was extended recently for elastic scattering by Csanak et al. [17]. The purpose of this chapter is to use the methods of Csanak et al. [17] to give general definitions for both elastic and inelastic scattering for the creation, destruction, and transfer cross sections of atomic multipole moments via the use of pure quantum-mechanical methods. C1 [Csanak, G.] Kyungwon Univ, Songnam, South Korea. [Fursa, D. V.; Bray, I.] Curtin Univ Technol, Perth, WA 6845, Australia. [Kilcrease, D. P.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Csanak, G (reprint author), Kyungwon Univ, Songnam, South Korea. RI Bray, Igor/B-8586-2009 OI Bray, Igor/0000-0001-7554-8044 NR 31 TC 0 Z9 0 U1 0 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1615-5653 BN 978-3-540-73586-1 J9 SPRINGER SER ATOM OP PY 2008 VL 44 BP 69 EP 89 D2 10.1007/978-3-540-73587-8 PG 21 WC Physics, Fluids & Plasmas; Spectroscopy SC Physics; Spectroscopy GA BJN44 UT WOS:000266856600005 ER PT S AU Vlasko-Vlasov, V Imre, A Pearson, J Hiller, J Welp, U AF Vlasko-Vlasov, Vitalii Imre, Alexandra Pearson, John Hiller, Jon Welp, Ulrich BE Stockman, MI TI Plasmon scanner and multiplexer SO PLASMONICS: METALLIC NANOSTRUCTURES AND THEIR OPTICAL PROPERTIES VI SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Plasmonics - Metallic Nanostructures and their Optical Properties VI CY AUG 10-14, 2008 CL San Diego, CA SP SPIE DE surface plasmons; focusing and scanning; near field imaging ID SURFACE-PLASMONS; GENERATION; OPTICS AB Nanoholes and nanoslits are efficient sources of plasmons on metal surfaces. We use arc-shaped nanoslits in thin silver films for generating sub-wavelength plasmon spots with enhanced optical near-fields. Introduction of a continuous phase delay along the nanoslits shifts the position of the plasmon focus spot. We show experimentally that such a phase control allows to scan the plasmon focus by micrometers with a nanometer precision and to launch it on separate silver nanowires placed in the focal plane. These experiments, demonstrating scanning and multiplexing functionality, show the feasibility of the nanoscale manipulation with optical fields. C1 [Vlasko-Vlasov, Vitalii; Imre, Alexandra; Pearson, John; Hiller, Jon; Welp, Ulrich] Argonne Natl Lab, MSD, Argonne, IL 60439 USA. RP Vlasko-Vlasov, V (reprint author), Argonne Natl Lab, MSD, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Hiller, Jon/A-2513-2009; Joshi-Imre, Alexandra/A-2912-2010 OI Hiller, Jon/0000-0001-7207-8008; Joshi-Imre, Alexandra/0000-0002-4271-1623 NR 17 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 978-0-8194-7252-6 J9 PROC SPIE PY 2008 VL 7032 AR 703221 DI 10.1117/12.796651 PG 6 WC Nanoscience & Nanotechnology; Optics; Physics, Applied SC Science & Technology - Other Topics; Optics; Physics GA BIM05 UT WOS:000260664900026 ER PT S AU Shuford, KL Meyer, KA Li, CC Cho, SO Whitten, WB Shaw, RW AF Shuford, Kevin L. Meyer, Kent A. Li, Cuncheng Cho, Sung Oh Whitten, William B. Shaw, Robert W. BE Kawata, S Shalaev, VM Tsai, DP TI Nanoscale coupling effects on single particle microscopy SO PLASMONICS: NANOIMAGING, NANOFABRICATION, AND THEIR APPLICATIONS IV SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Plasmonics - Nanoimaging, Nanofabrication and Their Application IV CY AUG 10-14, 2008 CL San Diego, CA SP SPIE DE gold octahedra; single nanoparticle microscopy; nanoparticle coupling; luminescence ID DISCRETE-DIPOLE APPROXIMATION; ENHANCED RAMAN-SCATTERING; SILVER NANOPARTICLES; GOLD NANOPARTICLES; SPECTROSCOPY; MOLECULES AB We present theoretical studies and experimental results on the optical properties of gold, octahedra-shaped nanoparticles. We show that the optical spectrum varies quite dramatically as two nanoparticles are brought into close proximity. AFM images and optical spectra have been obtained for nanooctahedra dimers in uncoupled and strongly coupled configurations. The former displays a single peak in the optical spectrum, while the latter shows an additional peak at longer wavelengths. Calculations indicate that the additional spectral feature originates from a strongly coupled plasmon state that oscillates along the extended axis of the dimer. We investigate theoretically the distances over which the dimers couple and find these results to be particularly orientation dependent. The anisotropic particle shape and sharp apices contribute significantly to the orientational dependence of the interparticle couplings. C1 [Shuford, Kevin L.; Meyer, Kent A.; Whitten, William B.; Shaw, Robert W.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Shuford, KL (reprint author), Oak Ridge Natl Lab, POB 2008,MS6142, Oak Ridge, TN 37831 USA. EM shufordkl@ornl.gov; shawrw@ornl.gov NR 26 TC 0 Z9 0 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 978-0-8194-7253-3 J9 PROC SPIE PY 2008 VL 7033 AR 703301 DI 10.1117/12.795359 PG 9 WC Nanoscience & Nanotechnology; Optics; Physics, Fluids & Plasmas SC Science & Technology - Other Topics; Optics; Physics GA BIM12 UT WOS:000260670700006 ER PT J AU Fischer, W Liao, HX Haynes, BF Letvin, NL Korber, B AF Fischer, Will Liao, H. X. Haynes, Barton F. Letvin, Norman L. Korber, Bette TI Coping with viral diversity in HIV vaccine design: A response to Nickle et al. SO PLOS COMPUTATIONAL BIOLOGY LA English DT Letter ID HUMAN-IMMUNODEFICIENCY-VIRUS; SELECTION C1 [Fischer, Will; Korber, Bette] Los Alamos Natl Lab, Los Alamos, NM USA. [Korber, Bette] Santa Fe Inst, Santa Fe, NM 87501 USA. [Liao, H. X.; Haynes, Barton F.] Duke Univ, Durham, NC USA. [Letvin, Norman L.] Harvard Univ, Beth Israel Deaconess Med Ctr, Boston, MA 02215 USA. RP Fischer, W (reprint author), Los Alamos Natl Lab, Los Alamos, NM USA. EM wfischer@lanl.gov RI Fischer, Will/B-1323-2013 OI Fischer, Will/0000-0003-4579-4062 FU NIAID NIH HHS [P01 AI061734, P01 AI61734] NR 8 TC 20 Z9 20 U1 1 U2 3 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA SN 1553-7358 J9 PLOS COMPUT BIOL JI PLoS Comput. Biol. PD JAN PY 2008 VL 4 IS 1 AR e15 DI 10.1371/journal.pcbi.0040015.t001 PG 4 WC Biochemical Research Methods; Mathematical & Computational Biology SC Biochemistry & Molecular Biology; Mathematical & Computational Biology GA 294LM UT WOS:000255407500017 PM 18225944 ER PT B AU King, V Phillips, C Saia, J Young, M AF King, Valerie Phillips, Cynthia Saia, Jared Young, Maxwell GP ACM TI Sleeping on the Job: Energy-Efficient and Robust Broadcast for Radio Networks SO PODC'08: PROCEEDINGS OF THE 27TH ANNUAL ACM SYMPOSIUM ON PRINCIPLES OF DISTRIBUTED COMPUTING LA English DT Proceedings Paper CT 27th Annual ACM Symposium on Principles of Distributed Computing CY AUG 18-21, 2008 CL Toronto, CANADA SP ACM SIGACT, ACM SIGOPS DE Byzantine failure; Broadcast; Fault tolerance; Radio networks; Energy efficient; Data streaming; Power aware AB We address the problem of minimizing power consumption when broadcasting a message from one node to all the other nodes in a radio network. To enable power savings for such a problem, we introduce a compelling new data streaming problem that we call the Bad Santa problem.. our results oil this problem apply for any situation where: 1) a node call listen to a set, of v. nodes, out of which at least half are non-faulty and know the correct message; and 2) each of these n nodes,ends according to some predetermined schedule which assigns each of them its own unique time slot. In this situation, we show that in order to receive the correct message with probability 1, it is necessary and sufficient for the listening node to listen to a Theta(root n) expected number of time slots. Moreover, if we allow for repetitions of transmissions so that each sending node sends the message O(log* n) times (i.e. in O(log* n) rounds each consisting of the n time slots), then listening to O(log* n) expected number of time slots suffices. We show that this is near optimal. We describe ail application of our result to the popular grid model for a radio network. Each node in the network is located oil a point in a two dimensional grid, and whenever a node sends a message, all awake nodes within L. distance r receive the message. In this model, up to t < r/2 (2r + 1) nodes within any 2r + 1 by 2r + 1 square in the grid can suffer Byzantine faults. Moreover, we assume that the nodes that stiffer Byzantine faults are chosen and controlled by ail adaptive adversary that knows everything except for the random bits of each non-faulty node. This type of adaptive adversary models worst-case behavior due to malicious attacks oil the network; mobile nodes moving around in the network; or static nodes losing power or ceasing to function., show how to solve the broadcast Let n = r(2r + 1). We problem in this model with each node awake only ail expected O(1/root n) fraction of the time. Moreover, if we allow each node to send O(log*n) times, we can increase the energy savings so that each node is awake only ail expected O((1og* n)/n) fraction of the time. This compares favorably with previous protocols that required each node to be awake for every time step. C1 [King, Valerie] Univ Victoria, Dept Comp Sci, Victoria, BC, Canada. [Phillips, Cynthia] Sandia Natl Labs, Albuquerque, NM USA. [Saia, Jared] Univ New Mexico, Albuquerque, NM USA. [Young, Maxwell] Univ Waterloo, Waterloo, ON, Canada. RP King, V (reprint author), Univ Victoria, Dept Comp Sci, Victoria, BC, Canada. EM val@cs.uvic.ca; caphill@sandia.gov; saia@cs.unm.edu; m22young@uwaterloo.ca NR 19 TC 2 Z9 2 U1 0 U2 1 PU ASSOC COMPUTING MACHINERY PI NEW YORK PA 1515 BROADWAY, NEW YORK, NY 10036-9998 USA BN 978-1-59593-989-0 PY 2008 BP 243 EP + DI 10.1145/1400751.1400784 PG 2 WC Computer Science, Hardware & Architecture; Computer Science, Theory & Methods SC Computer Science GA BJI04 UT WOS:000266034700025 ER PT S AU Cruz-Cabrera, AA Kemme, SA Carter, TR AF Cruz-Cabrera, A. A. Kemme, S. A. Carter, T. R. BE Chenault, DB Goldstein, DH TI Fiber faceplates to mitigate diffraction effects in an imaging snapshot polarimeter SO POLARIZATION: MEASUREMENT, ANALYSIS, AND REMOTE SENSING VIII SE Proceedings of SPIE LA English DT Proceedings Paper CT Conference on Polarization - Measurement, Analysis and Remote Sensing VIII CY MAR 18-19, 2008 CL Orlando, FL SP SPIE DE polarimetry; faceplates; snap-shot; imaging; LWIR; MWIR; fiber; focal plane array ID COMPLETE STOKES POLARIMETER; MICROPOLARIZER ARRAYS; OPTIMIZATION; FABRICATION AB We investigate the advantages of employing a fiber faceplate in a snapshot polarimetry system. Our previous work at Sandia National Laboratories indicates that diffraction and propagation between the micropolarizer array, the micro-waveplate array, and the Focal Plane Array (FPA) degrade performance, as quantified by the extinction ratio(1,2). Crosstalk between adjacent pixels due to diffraction increases uncertainty of the measured polarization states in a scene of interest. These issues are exacerbated in the long-wavelength regime and as FPA pixel dimensions decrease. One solution, since it minimizes propagation distance, is to construct the micropolarizer and micro-waveplate arrays on a single substrate surface and to place this combination on the FPA(3). This solution is a significant fabrication challenge and decreases yield due to its serial assembly nature. An alternative solution that would improve yield is to fabricate the micropolarizer on top of a fiber faceplate, place the faceplate on the FPA with the micropolarizer facing away, then place the waveplate array on top of the micropolarizer. The optical field that passes through the plane of the microwaveplate array and the micropolarizer array is guided to the FPA plane, without suffering diffraction effects associated with free-space propagation. We will quantify the utility of these proposed configurations with predicted imaging polarimetric system extinction ratios. C1 [Cruz-Cabrera, A. A.; Kemme, S. A.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Cruz-Cabrera, AA (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 14 TC 0 Z9 0 U1 0 U2 1 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 978-0-8194-7163-5 J9 PROC SPIE PY 2008 VL 6972 AR 697204 DI 10.1117/12.778533 PG 8 WC Instruments & Instrumentation; Remote Sensing; Optics SC Instruments & Instrumentation; Remote Sensing; Optics GA BHZ66 UT WOS:000257705300002 ER PT J AU Gaan, S Sun, G Hutches, K Engelhard, MH AF Gaan, Sabyasachi Sun, Gang Hutches, Katherine Engelhard, Mark H. TI Effect of nitrogen additives on flame retardant action of tributyl phosphate: Phosphorus-nitrogen synergism SO POLYMER DEGRADATION AND STABILITY LA English DT Article DE phosphorus-nitrogen synergistic action; XPS; activation energy of decomposition; char; SEM; ATR-FTIR ID RAY PHOTOELECTRON-SPECTROSCOPY; THERMAL OXIDATIVE-DEGRADATION; LIMITING-OXYGEN INDEX; COTTON FABRICS; GLASSES; DECOMPOSITION; NITRIDATION; BEHAVIORS; KINETICS AB The effects of three nitrogen additives (urea, guanidine carbonate, and melamine formaldehyde) on the flame retardant action of cotton cellulose treated with tributyl phosphate (TBP) were investigated in this research. The limiting oxygen index (LOI) of treated cotton cellulose clearly revealed the synergistic interactions of TBP and nitrogen compounds. The Kissinger method was used to evaluate the kinetics of thermal decomposition on treated cellulose. The results show that adding nitrogen additives increases the activation energy at a higher degree of degradation, thus indicating better thermal stability at higher temperatures. Scanning electron microscope pictures of chars formed after a LOI test show the formation of protective polymeric coatings on char surfaces. Evaluating char surfaces using attenuated total reflectance-Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy suggests that these coatings are composed of species containing phosphorus-nitrogen-oxygen. Possible chemical interactions of phosphorus and nitrogen compounds during the burning process and the formation of a protective coating could be the reason for the observed synergism. Potential reaction pathways contributing to the formation of this protective polymeric coating have also been proposed. (c) 2007 Elsevier Ltd. All rights reserved. C1 [Gaan, Sabyasachi; Sun, Gang; Hutches, Katherine] Univ Calif Davis, Div Text & Cloting, Davis, CA 95616 USA. [Engelhard, Mark H.] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RP Sun, G (reprint author), Univ Calif Davis, Div Text & Cloting, 1 Shields Ave, Davis, CA 95616 USA. EM gysun@ucdavis.edu RI Engelhard, Mark/F-1317-2010; OI Engelhard, Mark/0000-0002-5543-0812 NR 32 TC 75 Z9 76 U1 7 U2 62 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0141-3910 J9 POLYM DEGRAD STABIL JI Polym. Degrad. Stabil. PD JAN PY 2008 VL 93 IS 1 BP 99 EP 108 DI 10.1016/j.polymdegradstab.2007.10.013 PG 10 WC Polymer Science SC Polymer Science GA 264RB UT WOS:000253305500013 ER PT S AU Maxwell, R Chinn, S Gee, R Balazs, B Lacevic, N Herberg, J Gjersing, E Patel, M Wheeler, H Wilson, M AF Maxwell, Robert Chinn, Sarah Gee, Rid Balazs, Bryan Lacevic, Naida Herberg, Julie Gjersing, Erica Patel, Mogon Wheeler, Hilary Wilson, Mark BE Celina, MC Assink, RA TI Reassessing Polymer Lifetime Prediction Methods with Improved Characterization and Diagnostics SO POLYMER DURABILITY AND RADIATION EFFECTS SE ACS SYMPOSIUM SERIES LA English DT Proceedings Paper CT Symposium on Polymer Performance and Degradation held at Pacifichem 2005 Conference CY DEC, 2005 CL Honolulu, HI ID FILLED SILICONE ELASTOMER; PDMS COMPOSITE-MATERIALS; MOLECULAR-DYNAMICS; POLYSILOXANE RUBBER; GAMMA-RADIATION; FORCE-FIELD; NMR MOUSE; POLY(DIMETHYLSILOXANE); SIMULATIONS; RELAXATION AB A combination of Magnetic Resonance Imaging (MRI), Multiple Quantum Nuclear Magnetic Resonance (MQ-NMR), Molecular Dynamics modeling, and traditional mechanical testing approaches have been used to provide a more scientific prediction of the aging behaviors of two silica-filled siloxane polymers. These materials are especially prone to part-to-part and service condition variablilities, and thus a combination of non-destructive magnetic resonance techniques and atomistic modeling has been used to determine physical and chemical inhomogeneities which are, respectively, already present in the material and potentially occurring as a result of cavitation upon applied stress. To elucidate the overall degradation behavior of the polymers studied and thus add scientific evidence to their lifetime predictions several different damage mechanisms (thermal, radiation, and mechanical) have been studied individually and in combination to elucidate the overall aging behavior for a variety of service conditions. Running concurrent to these experimental and modeling efforts, an analysis has been done to more precisely define the operational capabilities of the polymers relative to their requirements, leading to an even more accurate lifetime prediction capability due to the ability to C1 [Maxwell, Robert; Chinn, Sarah; Gee, Rid; Balazs, Bryan; Lacevic, Naida; Herberg, Julie; Gjersing, Erica] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Maxwell, R (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave,L-235, Livermore, CA 94551 USA. RI Chinn, Sarah/E-1195-2011 NR 31 TC 0 Z9 1 U1 1 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 SIXTEENTH ST NW, WASHINGTON, DC 20036 USA SN 0097-6156 BN 978-0-8412-6952-1 J9 ACS SYM SER PY 2008 VL 978 BP 2 EP 15 PG 14 WC Chemistry, Multidisciplinary; Polymer Science SC Chemistry; Polymer Science GA BLT01 UT WOS:000270965300001 ER PT S AU Assink, RA Celina, MC Elliott, JM AF Assink, Roger A. Celina, Mathew C. Elliott, Julie M. BE Celina, MC Assink, RA TI Acceleration Factors for the Oxidative Aging of Polymeric Materials SO POLYMER DURABILITY AND RADIATION EFFECTS SE ACS Symposium Series LA English DT Proceedings Paper CT Symposium on Polymer Performance and Degradation held at Pacifichem 2005 Conference CY DEC, 2005 CL Honolulu, HI ID AGED ELASTOMERS; NMR ANALYSIS AB Three methods that were used to measure the chemical changes associated with oxidative degradation of polymeric materials are presented. The first method is based on the nuclear activation of O-18 in an elastomer that was thermally aged in an O-18(2) atmosphere. Second, the alcohol groups in a thermally aged elastomer were derivatized with trifluoroacetic anhydride and their concentration measured via F-19 NMR spectroscopy. Finally, a respirometer was used to directly measure the oxidative rates of a polyurethane foam as a function of aging temperature. The measurement of the oxidation rates enabled acceleration factors for oxidative degradation of these materials to be calculated. C1 [Assink, Roger A.; Celina, Mathew C.; Elliott, Julie M.] Sandia Natl Labs, Dept Organ Mat, Albuquerque, NM 87185 USA. RP Assink, RA (reprint author), Sandia Natl Labs, Dept Organ Mat, POB 5800, Albuquerque, NM 87185 USA. NR 10 TC 0 Z9 0 U1 3 U2 11 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 SIXTEENTH ST NW, WASHINGTON, DC 20036 USA SN 0097-6156 BN 978-0-8412-6952-1 J9 ACS SYM SER JI ACS Symp. Ser. PY 2008 VL 978 BP 26 EP 36 PG 11 WC Chemistry, Multidisciplinary; Polymer Science SC Chemistry; Polymer Science GA BLT01 UT WOS:000270965300003 ER PT S AU Celina, MC Clough, RL Jones, GD AF Celina, Mathew C. Clough, Roger L. Jones, Gary D. BE Celina, MC Assink, RA TI Interactive Behavior in Polymer Degradation SO POLYMER DURABILITY AND RADIATION EFFECTS SE ACS SYMPOSIUM SERIES LA English DT Proceedings Paper CT Symposium on Polymer Performance and Degradation held at Pacifichem 2005 Conference CY DEC, 2005 CL Honolulu, HI ID SOLID POLYPROPYLENE; THERMAL-OXIDATION; CHEMILUMINESCENCE; MODEL AB A novel dual stage chemiluminescence detection system has been applied to study remote interaction effects occurring during polymer degradation. There has long been speculation that infectious agents and reactions transferring initiators or antioxidants are important aspects in polymer aging. Evidence is presented that in an oxidizing environment a degrading polymer (i.e. PP) is capable of infecting a different polymer (i.e. polybutadiene) over a relatively large distance. Similarly, traces of thermally sensitive peroxides in the vicinity of PP are found to induce degradation remotely. These observations document cross-infectious phenomena. Likewise, inhibitive volatiles from stabilized elastomers were shown to retard a degradation process remotely. Such interactive phenomena are important to better understand polymer interactions, fundamental degradation processes and long-term aging effects of multiple materials in a single environment. C1 [Celina, Mathew C.; Clough, Roger L.; Jones, Gary D.] Sandia Natl Labs, Dept Organ Mat, Albuquerque, NM 87185 USA. RP Celina, MC (reprint author), Sandia Natl Labs, Dept Organ Mat, POB 5800, Albuquerque, NM 87185 USA. NR 19 TC 0 Z9 0 U1 1 U2 10 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 SIXTEENTH ST NW, WASHINGTON, DC 20036 USA SN 0097-6156 BN 978-0-8412-6952-1 J9 ACS SYM SER PY 2008 VL 978 BP 37 EP 47 PG 11 WC Chemistry, Multidisciplinary; Polymer Science SC Chemistry; Polymer Science GA BLT01 UT WOS:000270965300004 ER PT J AU Leolukman, M La, YH Li, XF Gopalan, P AF Leolukman, Melvina La, Young-Hye Li, Xuefa Gopalan, Padma TI Morphology Development in Asymmetric Poly (styrene-b-tert-butylacrylate) Thin Films by Solvent Annealing SO POLYMER JOURNAL LA English DT Article DE Solvent Annealing; Block Copolymer; Polystyrene; Poly(tert-butylacrylate) ID DIBLOCK COPOLYMER FILMS; BLOCK-COPOLYMERS; TRIBLOCK COPOLYMER; VAPOR TREATMENT; INVERTED PHASE; SURFACE; ARRAYS; NANOSTRUCTURES; MICRODOMAIN; TRANSITION AB Morphology dependence of asymmetric poly(styrene-b-tert-butylacrylate) [P(S-b-tBA)] thin film on casting solvent, annealing solvent and annealing time was investigated. Two casting solvents, toluene and propylene glycol monomethyl ester acetate (PGMEA), and two annealing solvents, p-xylene and tert-butylacrylate (tBA), were studied. The casting solvent dominated the initial morphology. P(S-b-tBA) film cast from toluene resulted in inverted phase (PtBA cylinders ill PS matrix) and the one cast from PGMEA led to normal phase (PS cylinders in PtBA matrix) morphology. The annealing solvents preference to either the majority or the minority block in combination with the annealing time controlled the orientation of the cylinders. When the annealing solvent preferentially interacted with the majority block in the as-cast film, a metastable highly ordered perpendicular cylinder morphology was trapped. The best conditions to obtain perpendicular PS cylinders were casting P(S-b-tBA) film from PGMEA and annealing in tBA vapor for 20 and 25 min on silicon and NaCl substrates respectively. C1 [Leolukman, Melvina; Gopalan, Padma] Univ Wisconsin, Dept Mat Sci & Engn, Madison, WI 53706 USA. [La, Young-Hye] Univ Wisconsin, Dept Biol & Chem Engn, Madison, WI 53706 USA. [Li, Xuefa] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Gopalan, P (reprint author), Univ Wisconsin, Dept Mat Sci & Engn, 1509 Univ Ave, Madison, WI 53706 USA. EM pgopalan@wisc.edu FU UW-NSF Nanoscale Science and Engineering Center [DMR-0425880]; DMR-NSF-CAREER [0449688]; Center Facilities and Medical School Electron Microscope Facility; University of Wisconsin-Madison; U. S. DOE, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357] FX We Would like to acknowledge useful discussions with Prof. Paul F. Nealey, and Dr. Insik In. This work was Supported by the UW-NSF Nanoscale Science and Engineering Center (DMR-0425880) and the DMR-NSF-CAREER 0449688. We also acknowledge the use of Materials Science Center Facilities and Medical School Electron Microscope Facility at University of Wisconsin-Madison. Use of the Advanced Photon Source was supported by the U. S. DOE, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. NR 40 TC 4 Z9 4 U1 0 U2 6 PU SOC POLYMER SCIENCE JAPAN PI TOKYO PA TSUKIJI DAISAN NAGAOKA BLDG, 2-4-2 TSUKIJI, CHUO-KU, TOKYO, 104, JAPAN SN 0032-3896 J9 POLYM J JI Polym. J. PY 2008 VL 40 IS 9 BP 825 EP 831 DI 10.1295/polymj.PJ2008014 PG 7 WC Polymer Science SC Polymer Science GA 370AE UT WOS:000260734200005 ER PT J AU Von Dreele, RB Rodriguez-Carvajal, J AF Von Dreele, R. B. Rodriguez-Carvajal, J. BE Dinnebier, RE Billinge, SJL TI The Intensity of a Bragg Reflection SO POWDER DIFFRACTION: THEORY AND PRACTICE LA English DT Article; Book Chapter ID MODULATED MOLECULAR-CRYSTALS; NEUTRON-DIFFRACTION; MAGNETIC-STRUCTURES; SYMMETRY ANALYSIS; SCATTERING C1 [Von Dreele, R. B.] Argonne Natl Lab, Intense Pulsed Neutron Source, Adv Photon Source, Argonne, IL 60439 USA. [Rodriguez-Carvajal, J.] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France. RP Von Dreele, RB (reprint author), Argonne Natl Lab, Intense Pulsed Neutron Source, Adv Photon Source, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 37 TC 3 Z9 3 U1 0 U2 1 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, CAMBRIDGE CB4 4WF, CAMBS, ENGLAND BN 978-1-84755-823-7 PY 2008 BP 58 EP 88 DI 10.1039/9781847558237-00058 D2 10.1039/9781847558237 PG 31 WC Crystallography; Materials Science, Multidisciplinary; Spectroscopy SC Crystallography; Materials Science; Spectroscopy GA BKZ31 UT WOS:000269672500004 ER PT J AU Von Dreele, RB AF Von Dreele, R. B. BE Dinnebier, RE Billinge, SJL TI Rietveld Refinement SO POWDER DIFFRACTION: THEORY AND PRACTICE LA English DT Article; Book Chapter ID POWDER DIFFRACTION DATA; CRYSTAL-STRUCTURE; CHEMISTRY C1 Argonne Natl Lab, Adv Photon Source, IPNS, Argonne, IL 60439 USA. RP Von Dreele, RB (reprint author), Argonne Natl Lab, Adv Photon Source, IPNS, Argonne, IL 60439 USA. NR 25 TC 7 Z9 7 U1 0 U2 0 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, CAMBRIDGE CB4 4WF, CAMBS, ENGLAND BN 978-1-84755-823-7 PY 2008 BP 266 EP 281 DI 10.1039/9781847558237-00266 D2 10.1039/9781847558237 PG 16 WC Crystallography; Materials Science, Multidisciplinary; Spectroscopy SC Crystallography; Materials Science; Spectroscopy GA BKZ31 UT WOS:000269672500010 ER PT J AU Spinelli, SL O'Brien, JJ Bancos, S Lehmann, GM Springer, DL Blumberg, N Francis, CW Taubman, MB Phipps, RP AF Spinelli, S. L. O'Brien, J. J. Bancos, S. Lehmann, G. M. Springer, D. L. Blumberg, N. Francis, C. W. Taubman, M. B. Phipps, R. P. TI The PPAR-Platelet Connection: Modulators of Inflammation and Potential Cardiovascular Effects SO PPAR RESEARCH LA English DT Review AB Historically, platelets were viewed as simple anucleate cells responsible for initiating thrombosis and maintaining hemostasis, but clearly they are also key mediators of inflammation and immune cell activation. An emerging body of evidence links platelet function and thrombosis to vascular inflammation. Peroxisome proliferator-activated receptors (PPARs) play a major role in modulating inflammation and, interestingly, PPARs (PPAR beta/delta and PPAR gamma) were recently identified in platelets. Additionally, PPAR agonists attenuate platelet activation; an important discovery for two reasons. First, activated platelets are formidable antagonists that initiate and prolong a cascade of events that contribute to cardiovascular disease (CVD) progression. Dampening platelet release of proinflammatory mediators, including CD40 ligand (CD40L, CD154), is essential to hinder this cascade. Second, understanding the biologic importance of platelet PPARs and the mechanism(s) by which PPARs regulate platelet activation will be imperative in designing therapeutic strategies lacking the deleterious or unwanted side effects of current treatment options. Copyright (C) 2008 S. L. Spinelli et al. C1 [O'Brien, J. J.; Bancos, S.; Lehmann, G. M.; Phipps, R. P.] Univ Rochester, Med Ctr, Dept Environm Med, Rochester, NY 14642 USA. [Spinelli, S. L.; Blumberg, N.] Univ Rochester, Med Ctr, Dept Pathol & Lab Med, Rochester, NY 14642 USA. [Springer, D. L.] Pacific NW Div, Biol Sci Div Battelle, Richland, WA 99352 USA. [Francis, C. W.] Univ Rochester, Med Ctr, M&D Hematol Oncol, Rochester, NY 14642 USA. [Taubman, M. B.] Univ Rochester, Med Ctr, Dept Med, M&D Cardiol Unit, Rochester, NY 14642 USA. RP Phipps, RP (reprint author), Univ Rochester, Med Ctr, Dept Environm Med, 601 Elmwood Ave, Rochester, NY 14642 USA. EM richard_phipps@urmc.rochester.edu FU [T32 ES07026]; [ES01247]; [R01 HL078603]; [R21 HL086367]; [DE0113901]; [NHLBI-T32-66988]; [T32 HL07152] FX This work is supported by T32 ES07026, ES01247, R01 HL078603, R21 HL086367, DE0113901, NHLBI-T32-66988, T32 HL07152. NR 214 TC 13 Z9 13 U1 0 U2 2 PU HINDAWI PUBLISHING CORPORATION PI NEW YORK PA 410 PARK AVENUE, 15TH FLOOR, #287 PMB, NEW YORK, NY 10022 USA SN 1687-4757 J9 PPAR RES JI PPAR Res. PY 2008 AR 328172 DI 10.1155/2008/328172 PG 16 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA V13YV UT WOS:000207703000001 ER PT B AU Iskra, K Romein, JW Yoshii, K Beckman, P AF Iskra, Kamil Romein, John W. Yoshii, Kazutomo Beckman, Pete GP ACM TI ZOID: I/O-Forwarding Infrastructure for Petascale Architectures SO PPOPP'08: PROCEEDINGS OF THE 2008 ACM SIGPLAN SYMPOSIUM ON PRINCIPLES AND PRACTICE OF PARALLEL PROGRAMMING LA English DT Proceedings Paper CT ACM SIGPLAN Symposium on Principles and Practice of Parallel Programming (PPoPP 08) CY FEB 20-23, 2008 CL Salt Lake City, UT SP ACM SIGPLAN DE I/O forwarding; petascale ID LOFAR AB The ZeptoOS project is developing an open-source alternative to the proprietary software stacks available on contemporary massively parallel architectures. The aim is to enable computer science research on these architectures, enhance community collaboration, and foster innovation. In this paper, we introduce a component of ZeptoOS called ZOID-an I/O-forwarding infrastructure for architectures such as IBM Blue Gene that decouple file and socket I/O from the compute nodes, shipping those functions to dedicated I/O nodes. Through the use of optimized network protocols and data paths, as well as a multithreaded daemon running on I/O nodes, ZOID provides greater performance than does the stock infrastructure. We present a set of benchmark results that highlight the improvements. Crucially, the flexibility of our infrastructure is a vast improvement over the stock infrastructure, allowing users to forward data using custom-designed application interfaces, through an easy-to-use plug-in mechanism. This capability is used for real-time telescope data transfers, extensively discussed in the paper. Plug-in-specific threads implement prefetching of data obtained over sockets from an input cluster and merge results froth individual compute nodes before sending them out, significantly reducing required network bandwidth. This approach allows a ZOID version of the application to handle a larger number of subbands per I/O node. or even to bypass the input cluster altogether, plugging the input from remote receiver stations directly into the I/O nodes. Using the resources more efficiently can result in considerable savings. C1 [Iskra, Kamil; Yoshii, Kazutomo; Beckman, Pete] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. RP Iskra, K (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. EM iskra@mcs.anl.gov; romein@astron.nl; kazutomo@mcs.anl.gov; beckman@mcs.anl.gov NR 15 TC 31 Z9 32 U1 0 U2 0 PU ASSOC COMPUTING MACHINERY PI NEW YORK PA 1515 BROADWAY, NEW YORK, NY 10036-9998 USA BN 978-1-59593-960-9 PY 2008 BP 153 EP 161 DI 10.1145/1345206.1345230 PG 9 WC Computer Science, Software Engineering; Computer Science, Theory & Methods SC Computer Science GA BJK09 UT WOS:000266619600016 ER PT B AU Bronevetsky, G Marques, D Pingali, K Rugina, R Mckee, SA AF Bronevetsky, Greg Marques, Daniel Pingali, Keshav Rugina, Radu McKee, Sally A. GP ACM TI Compiler-Enhanced Incremental Checkpointing for OpenMP Applications SO PPOPP'08: PROCEEDINGS OF THE 2008 ACM SIGPLAN SYMPOSIUM ON PRINCIPLES AND PRACTICE OF PARALLEL PROGRAMMING LA English DT Proceedings Paper CT ACM SIGPLAN Symposium on Principles and Practice of Parallel Programming (PPoPP 08) CY FEB 20-23, 2008 CL Salt Lake City, UT SP ACM SIGPLAN DE Reliability; Performance AB As modem supercomputing systems reach pets-flop performance they grow in both size and complexity, becoming increasingly vulnerable to failures. Checkpointing is a popular technique for tolerating such failures. Although a variety of automated system-level checkpointing solutions are currently available to HPC users, manual application-level checkpointing remains more popular due to its superior performance. This paper improves performance of automated checkpointing by presenting a compiler analysis for incremental checkpointing. This analysis, which works with both sequential and OpenMP applications, significantly reduces checkpoint sizes and enables asynchronous checkpointing. C1 [Bronevetsky, Greg] Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA 94551 USA. RP Bronevetsky, G (reprint author), Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA 94551 USA. EM greg@bronevetsky.com; daniel@ices.utexas.edu; pingali@cs.utexas.edu; rugina@cs.cornell.edu; sam@csl.cornell.edu NR 5 TC 3 Z9 3 U1 0 U2 0 PU ASSOC COMPUTING MACHINERY PI NEW YORK PA 1515 BROADWAY, NEW YORK, NY 10036-9998 USA BN 978-1-59593-960-9 PY 2008 BP 275 EP 276 DI 10.1145/1345206.1345253 PG 2 WC Computer Science, Software Engineering; Computer Science, Theory & Methods SC Computer Science GA BJK09 UT WOS:000266619600033 ER PT B AU Balaji, P Feng, W Archuleta, J Lin, H Kettimuthu, R Thakur, R Ma, X AF Balaji, P. Feng, W. Archuleta, J. Lin, H. Kettimuthu, R. Thakur, R. Ma, X. GP ACM TI Semantics-based Distributed I/O for mpiBLAST SO PPOPP'08: PROCEEDINGS OF THE 2008 ACM SIGPLAN SYMPOSIUM ON PRINCIPLES AND PRACTICE OF PARALLEL PROGRAMMING LA English DT Proceedings Paper CT ACM SIGPLAN Symposium on Principles and Practice of Parallel Programming (PPoPP 08) CY FEB 20-23, 2008 CL Salt Lake City, UT SP ACM SIGPLAN DE mpiBLAST; I/O; distributed filesystem AB BLAST is a widely used software toolkit for genomic sequence search. mpiBLAST is a freely available, open-source parallelization of BLAST that uses database segmentation to allow different worker processes to search (in parallel) unique segments of the database. After searching, the workers write their output to a filesystem. While mpiBLAST has been shown to achieve high performance in clusters with fast local filesystems, its I/O processing remains a concern for scalability, especially in systems having limited I/O capabilities such as distributed filesystems spread across a wide-area network. Thus, we present ParaMEDIC-a novel environment that uses application-specific semantic information to compress I/O data and improve performance in distributed environments. Specifically, for mpiBLAST, ParaMEDIC partitions worker processes into compute and I/O workers. Compute workers, instead of directly writing the output to the filesystem, the workers process the output using semantic knowledge about the application to generate metadata and write the metadata to the filesystem. I/O workers, which physically reside closer to the actual storage, then process this metadata to re-create the actual output and write it to the filesystem. This approach allows ParaMEDIC to reduce I/O time, thus accelerating mpiBLAST by as much as 25-fold. C1 [Balaji, P.; Kettimuthu, R.; Thakur, R.] Argonne Natl Lab, Argonne, IL 60439 USA. RP Balaji, P (reprint author), Argonne Natl Lab, Argonne, IL 60439 USA. EM balaji@mcs.anl.gov; feng@cs.vt.edu; jsarch@cs.vt.edu; hlin2@ncsu.edu; kettimut@mcs.anl.gov; thakur@mcs.anl.gov; ma@cs.ncsu.edu NR 3 TC 2 Z9 2 U1 0 U2 0 PU ASSOC COMPUTING MACHINERY PI NEW YORK PA 1515 BROADWAY, NEW YORK, NY 10036-9998 USA BN 978-1-59593-960-9 PY 2008 BP 293 EP 294 DI 10.1145/1345206.1345262 PG 2 WC Computer Science, Software Engineering; Computer Science, Theory & Methods SC Computer Science GA BJK09 UT WOS:000266619600042 ER PT S AU Drake, GWF Lu, ZT Nortershauser, W Yan, ZC AF Drake, G. W. F. Lu, Z. -T. Noertershaeuser, W. Yan, Z. -C. BE Karshenboim, SG TI Halo Nuclei in Laser Light SO PRECISION PHYSICS OF SIMPLE ATOMS AND MOLECULES SE Lecture Notes in Physics LA English DT Article; Book Chapter ID INTERACTION CROSS-SECTIONS; HELIUM FINE-STRUCTURE; ENERGY-LEVELS; NEUTRON-HALO; QUADRUPOLE-MOMENT; RYDBERG STATES; GROUND-STATE; RADII; ISOTOPES; ATOM C1 [Drake, G. W. F.] Univ Windsor, Dept Phys, Windsor, ON N9B 3P4, Canada. [Lu, Z. -T.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. [Noertershaeuser, W.] Gesell Schwerionenorschung, D-64291 Darmstadt, Germany. [Yan, Z. -C.] Univ New Brunswick, Dept Phys, Fredericton, NB E3B 5A3, Canada. RP Drake, GWF (reprint author), Univ Windsor, Dept Phys, Windsor, ON N9B 3P4, Canada. EM GDrake@uwindsor.ca; lu@anl.gov; W.Noertershaeuser@gsi.de; zyan@unb.ca NR 68 TC 3 Z9 3 U1 0 U2 0 PU SPRINGER-VERLAG WIEN PI VIENNA PA SACHSENPLATZ 4-6, A-1201 VIENNA, AUSTRIA SN 0075-8450 BN 978-3-540-75478-7 J9 LECT NOTES PHYS PY 2008 VL 745 BP 131 EP 153 DI 10.1007/978-3-540-75479-4_8 D2 10.1007/978-3-540-75479-4 PG 23 WC Physics, Applied; Physics, Atomic, Molecular & Chemical SC Physics GA BJN07 UT WOS:000266832700008 ER PT B AU Muirhead, PS Erskine, DJ Edelstein, J Barman, TS Lloyd, JP AF Muirhead, Philip S. Erskine, David J. Edelstein, Jerry Barman, Travis S. Lloyd, James P. BE Santos, NC Pasquini, L Correia, ACM Romaniello, M TI Radial velocity precision in the near-infrared with T-EDI SO PRECISION SPECTROSCOPY IN ASTROPHYSICS SE ESO ASTROPHYSICS SYMPOSIA LA English DT Proceedings Paper CT Conference on Precision Spectroscopy in Astrophysics CY SEP 11-15, 2006 CL Aveiro, PORTUGAL SP ESO, Univ Lisbon, Ctr Astron & Astrophys, Univ Aveiro AB Presented are calculations of the photon-limited radial velocity sensitivity of the TripleSpec Externally Dispersed Interferometer for a series of M-type stellar models. This instrument uses an interferometer before the dispersing element of a moderate-resolution spectrograph to boost radial velocity precision and reject systematic noise. C1 [Muirhead, Philip S.] Cornell Univ, Ithaca, NY 14853 USA. [Erskine, David J.] Lawrence Livermore Natl Lab, Livermore, CA USA. [Edelstein, Jerry] Univ Calif Berkeley, Berkeley, CA 94720 USA. [Barman, Travis S.] Lowell Observ, Flagstaff, AZ USA. [Lloyd, James P.] Cornell Univ, Ithaca, NY 14853 USA. RP Muirhead, PS (reprint author), Cornell Univ, Ithaca, NY 14853 USA. EM muirhead@astro.cornell.edu; erskine1@llnl.gov; jerrye@ssl.berkeley.edu; barman@lowell.edu; jpl@astro.cornell.edu RI Muirhead, Philip/H-2273-2014 OI Muirhead, Philip/0000-0002-0638-8822 FU National Science Foundation [AST-0504874] FX We would like to thank Didier Saumon and Mark Marley of Los Alamos National Laboratory for generously providing high resolution models. This work is partially funded by the National Science Foundation under grant AST-0504874. NR 5 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY BN 978-3-540-75484-8 J9 ESO ASTROPHY SYMP PY 2008 BP 303 EP + DI 10.1007/978-3-540-75485-5_75 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BHH85 UT WOS:000253366800075 ER PT S AU Lindley, RA Adduci, JJ Johnson, RL Lepoire, DJ AF Lindley, Roy A. Adduci, Joseph J. Johnson, Robert L. Lepoire, Dave J. BE Apikyan, S Diamond, D Way, R TI Perspectives on international radiological trafficking SO PREVENTION, DETECTION AND RESPONSE TO NUCLEAR AND RADIOLOGICAL THREATS SE NATO Science for Peace and Security Series B-Physics and Biophysics LA English DT Proceedings Paper CT NATO Advanced Research Workshop on Prevention, Detection and Response to Nuclear and Radiological Threat CY SEP 25-29, 2006 CL Yerevan, ARMENIA SP NATO DE radiological trafficking; illicit trafficking-radiological materials; radiological theft and diversion; nuclear trafficking AB Nuclear and radiological materials continue to fall outside of legal control throughout the world. Comparison of 777 non-United States (U S) with 495 U S cases for CY2002-2005 suggests reporting is about 10% of the actual cases. Recoveries occur for more than 30% of the cases and are accomplished through detection and several other means. Fortunately, most radiological cases involve small amounts of material but there are about 6-8 cases annually with particularly troubling circumstances. C1 [Lindley, Roy A.; Adduci, Joseph J.; Johnson, Robert L.; Lepoire, Dave J.] Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. RP Lindley, RA (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 0 TC 1 Z9 1 U1 1 U2 2 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 1871-465X BN 978-1-4020-6656-6 J9 NATO SCI PEACE SEC B PY 2008 BP 47 EP + DI 10.1007/978-1-4020-6658-0_4 PG 2 WC Public, Environmental & Occupational Health; Materials Science, Multidisciplinary; Medicine, Research & Experimental; Physics, Nuclear; Social Issues SC Public, Environmental & Occupational Health; Materials Science; Research & Experimental Medicine; Physics; Social Issues GA BGV01 UT WOS:000250742500004 ER PT S AU Goldstein, WH Bernstein, A Craig, WW Johnson, M AF Goldstein, William H. Bernstein, Adam Craig, William W. Johnson, Micah BE Apikyan, S Diamond, D Way, R TI Neutrinos, dark matter and nuclear detection SO PREVENTION, DETECTION AND RESPONSE TO NUCLEAR AND RADIOLOGICAL THREATS SE NATO Science for Peace and Security Series B-Physics and Biophysics LA English DT Proceedings Paper CT NATO Advanced Research Workshop on Prevention, Detection and Response to Nuclear and Radiological Threat CY SEP 25-29, 2006 CL Yerevan, ARMENIA SP NATO AB Solutions to problems in nuclear non-proliferation and counter-terrorism may be found at the forefront of modem physics. Neutrino oscillation experiments, dark matter searches, and high energy astrophysics, are based on technology advances that have may also have application to nuclear detection. The detection problems share many characteristics, including energy scales, time structures, particle-type, and, of course, the combination of high backgrounds and low signal levels. This convergence of basic and applied physics is realized in non-proliferation and homeland security projects at Lawrence Livermore National Laboratory. Examples described here include reactor anti-neutrino monitoring, dual-phase noble liquid TPC development, gamma-ray telescopes, and nuclear resonance fluorescence. C1 [Goldstein, William H.; Bernstein, Adam; Craig, William W.; Johnson, Micah] Lawrence Livermore Natl Lab, POB 808 , 7000 East Ave, Livermore, CA 94550 USA. RP Goldstein, WH (reprint author), Lawrence Livermore Natl Lab, POB 808 , 7000 East Ave, Livermore, CA 94550 USA. NR 9 TC 0 Z9 0 U1 0 U2 2 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 1871-465X BN 978-1-4020-6656-6 J9 NATO SCI PEACE SEC B PY 2008 BP 117 EP + DI 10.1007/978-1-4020-6658-0_10 PG 2 WC Public, Environmental & Occupational Health; Materials Science, Multidisciplinary; Medicine, Research & Experimental; Physics, Nuclear; Social Issues SC Public, Environmental & Occupational Health; Materials Science; Research & Experimental Medicine; Physics; Social Issues GA BGV01 UT WOS:000250742500010 ER PT S AU Chiaro, PJ AF Chiaro, Peter J., Jr. BE Apikyan, S Diamond, D Way, R TI ANSI and IEC standards for, and evaluation of, radiation detection instrumentation SO Prevention, Detection and Response to Nuclear and Radiological Threats SE NATO Science for Peace and Security Series B - Physics and Biophysics LA English DT Proceedings Paper CT NATO Advanced Research Workshop on Prevention, Detection and Response to Nuclear and Radiological Threat CY SEP 25-29, 2006 CL Yerevan, ARMENIA SP NATO DE detection; ANSI standards; ANSI; T&E; protocols AB During the last quarter of 2002, an effort was started to develop perfomance requirements for radiation instrumentation used for the detection of illicit trafficking of radioactive material. Coordinated by the US National Institute of Science and Technology (NIST), a team was formed to establish writing committees for the development of these requirements as American National Standards Institute (ANSI) standards. The core of the new area was developed as ANSI N42, Homeland Security Instruments. A series of standards were developed followed by testing and evaluation (T&E) protocols that would be used for specific testing. Four US National Laboratories provided T&E support and work commenced to test instruments provided by manufacturers at no cost. During this time, discussions began regarding the formation of a new work group within the International Electrotechnical Commission (IEC). This new work group would be located within technical committee (TC) 45 which addresses nuclear instrumentation. This new work group, 15B, also began developing international standards to address the same instrument types. Following development of ANSI standards, the testing and evaluation process began, running for two distinct rounds. The results of the work was consolidated by NIST and released back to individual companies as well as the user community in a controlled manner. This document will provide details regarding the standards and their basis and status, as well as some information regarding the T&E process used in the USA. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. NR 0 TC 0 Z9 0 U1 1 U2 2 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 1871-465X BN 978-1-4020-6656-6 J9 NATO SCIENCE PEACE S PY 2008 BP 141 EP 147 DI 10.1007/978-1-4020-6658-0_12 PG 7 WC Public, Environmental & Occupational Health; Materials Science, Multidisciplinary; Medicine, Research & Experimental; Physics, Nuclear; Social Issues SC Public, Environmental & Occupational Health; Materials Science; Research & Experimental Medicine; Physics; Social Issues GA BGV01 UT WOS:000250742500012 ER PT J AU Bordenjuk, IV Panchenko, OA Sologub, SV Brown, IG AF Bordenjuk, I. V. Panchenko, O. A. Sologub, S. V. Brown, I. G. TI DEVELOPMENT OF ADDITIONAL MAGNETRON DISCHARGE IN THE DRIFT REGION OF AN ION SOURCE WITH CLOSED ELECTRON DRIFT SO PROBLEMS OF ATOMIC SCIENCE AND TECHNOLOGY LA English DT Article AB A gas discharge of the magnetron type which is formed in the beam drift region of an ion source with closed electron drift was investigated. The electric field due to the target bias potential results in the development of an additional gas discharge of the magnetron type in the drift region. Trajectories of electron beams emitted by the ion source were visualized using light emission from the working gas excited by the electrons. C1 [Bordenjuk, I. V.; Panchenko, O. A.; Sologub, S. V.] NASU, Inst Phys, UA-03028 Kiev, Ukraine. [Brown, I. G.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Bordenjuk, IV (reprint author), NASU, Inst Phys, UA-03028 Kiev, Ukraine. NR 5 TC 2 Z9 2 U1 0 U2 1 PU KHARKOV INST PHYSICS & TECHNOLOGY PI KHARKOV PA NATL SCIENCE CTR, 1 AKADEMICHESKAYA ST, KHARKOV, 61108, UKRAINE SN 1562-6016 J9 PROBL AT SCI TECH JI Probl. At. Sci. Tech. PY 2008 IS 6 BP 168 EP 170 PG 3 WC Nuclear Science & Technology; Physics, Fluids & Plasmas; Physics, Nuclear; Physics, Particles & Fields SC Nuclear Science & Technology; Physics GA 402RP UT WOS:000263031100053 ER PT S AU Kuno, S Takeuchi, T Ikuta, H Kond, T Kaminski, A Saito, Y Fujimori, S AF Kuno, S. Takeuchi, T. Ikuta, H. Kond, T. Kaminski, A. Saito, Y. Fujimori, S. BE Kim, I TI Electronic structure and thermoelectric properties of a layered cobalt oxide NaxCoO2 (0.5 < x < 0.8) investigated by angle-resolved photoemission spectroscopy SO PROCEEDINGS ICT 07: TWENTY-SIXTH INTERNATIONAL CONFERENCE ON THERMOELECTRICS SE International Conference on Thermoelectrics LA English DT Proceedings Paper CT 26th International Conference on Thermoelectrics (ICT'07) CY JUN 03-05, 2007 CL Jeju Isl, SOUTH KOREA SP Korean Thermoelect Soc, Int Thermoelect Soc, Inst Elect & Electron Engn, IEEE Components, Packaging & Mfg Technol Soc ID CA3CO4O9 AB Angle resolved photoemission spectroscopy (ARPES) with a synchrotron radiation as an incident photon source was performed on the layered cobalt oxides Na0.8CoO2. The measured electronic structure was compared with that of the Na0.7CoO2 previously reported. The observed energy-momentum dispersion of the Na0.8CoO2 was essentially the same with that of the Na0.7CoO2 except for the small difference in the chemical potential Delta mu similar to 15meV, which was caused by the difference in the sodium concentration. By employing the spectral conductivity reported for the Na0.7CoO2 and assuming the rigid band model, we calculated the thermoelectric power of the Na0.8CoO2. The measured thermoelectric power was quantitatively reproduced by the calculated one as well as that reported for the Na0.7CoO2, It is concluded that the scenario of the large thermoelectric power induced by the Boltzman-type electrical conduction in the characteristic bands previously proposed for the Na0.7CoO2 is applicable for the Na0.8CoO2. C1 [Takeuchi, T.] Eco Topia Sci Inst Nagoya Univ, Nagoya, Aichi 4648603, Japan. [Kond, T.; Kaminski, A.] Ames Lab, Ames, IA 50011 USA. [Saito, Y.; Fujimori, S.] Japan Atom Energy Agen, Synchrotrom Radiat Res, Hyogo 6795198, Japan. [Kuno, S.; Takeuchi, T.] Nagoya Univ, Dept Crystalline Mat Sci, Nagoya, Aichi 4648603, Japan. RP Kuno, S (reprint author), Nagoya Univ, Dept Crystalline Mat Sci, Nagoya, Aichi 4648603, Japan. FU Ministry of Education, Science, Sports and Culture of Japan [19656160] FX This work was supported by the Grant-in-Aid for Scientific Research for Exploratory Research No. 19656160 by the Ministry of Education, Science, Sports and Culture of Japan. NR 12 TC 0 Z9 0 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1094-2734 BN 978-1-4244-2262-3 J9 INT CONF THERMOELECT PY 2008 BP 99 EP 102 PG 4 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Condensed Matter SC Engineering; Materials Science; Physics GA BIC12 UT WOS:000258325700026 ER PT S AU Hendricks, TJ Karri, NK AF Hendricks, Terry J. Karri, Naveen K. BE Kim, I TI Design impacts of stochastically-varying input parameters on advanced thermoelectric conversion systems SO PROCEEDINGS ICT 07: TWENTY-SIXTH INTERNATIONAL CONFERENCE ON THERMOELECTRICS SE International Conference on Thermoelectrics LA English DT Proceedings Paper CT 26th International Conference on Thermoelectrics (ICT'07) CY JUN 03-05, 2007 CL Jeju Isl, SOUTH KOREA SP Korean Thermoelect Soc, Int Thermoelect Soc, Inst Elect & Electron Engn, IEEE Components, Packaging & Mfg Technol Soc ID MERIT AB Advanced, direct thermal energy conversion technologies are receiving increased research attention in order to recover waste thermal energy in advanced vehicles and industrial processes. Advanced thermoelectric (TE) systems necessarily require integrated system-level analyses to establish accurate optimum system designs. Past system-level design and analysis has relied on well-defined deterministic input parameters even though many critically important environmental and system design parameters in the above mentioned applications are often randomly variable, sometimes according to complex relationships, rather than discrete, well-known deterministic variables. This work describes new research and development creating techniques and capabilities for probabilistic design and analysis of advanced TE power generation systems to quantify the effects of randomly uncertain design inputs in determining more robust optimum TE system designs and expected outputs. Selected case studies involving stochastic TE material properties and coupled multi-variable stochasticity in key environmental and design parameters are presented and discussed to demonstrate key impacts from considering stochastic design inputs on the TE design optimization process. Critical findings show that: 1) stochastic Gaussian input distributions may produce Gaussian or non-Gaussian outcome probability distributions for critical TE design parameters, and 2) probabilistic input considerations can create design effects that warrant significant modifications to deterministically-derived optimum TE system designs. Magnitudes and directions of these design modifications are quantified for selected TE system design analysis cases. C1 [Hendricks, Terry J.; Karri, Naveen K.] Pacific NW Natl Lab, 902 Battelle Blvd,MSIN K5-02, Richland, WA 99352 USA. RP Hendricks, TJ (reprint author), Pacific NW Natl Lab, 902 Battelle Blvd,MSIN K5-02, Richland, WA 99352 USA. EM terry.hendricks@pnl.gov; naveen.karri@pnl.gov FU U.S. Department of Energy by Battelle Memorial Institute [DE-AC05-76RL01830] FX Operated for the U.S. Department of Energy by Battelle Memorial Institute under Contract DE-AC05-76RL01830 NR 15 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1094-2734 BN 978-1-4244-2262-3 J9 INT CONF THERMOELECT PY 2008 BP 348 EP 357 PG 10 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Condensed Matter SC Engineering; Materials Science; Physics GA BIC12 UT WOS:000258325700085 ER PT S AU Lowhorn, ND Wong-Ng, W Zhang, W Lu, ZQ Otani, M Thomas, E Green, M Tran, TN Dilley, N Elsner, N Hogan, T Li, Q Obara, H Sharp, J Venkatasubramanian, R Willigan, R Yang, J Nolas, G Tritt, T AF Lowhorn, Nathan D. Wong-Ng, W. Zhang, W. Lu, Z. Q. Otani, M. Thomas, E. Green, M. Tran, T. N. Dilley, N. Elsner, N. Hogan, T. Li, Q. Obara, H. Sharp, J. Venkatasubramanian, R. Willigan, R. Yang, J. Nolas, G. Tritt, T. BE Kim, I TI Round-robin studies of two potential seebeck coefficient standard reference materials SO PROCEEDINGS ICT 07: TWENTY-SIXTH INTERNATIONAL CONFERENCE ON THERMOELECTRICS SE International Conference on Thermoelectrics LA English DT Proceedings Paper CT 26th International Conference on Thermoelectrics (ICT'07) CY JUN 03-05, 2007 CL Jeju Isl, SOUTH KOREA SP Korean Thermoelect Soc, Int Thermoelect Soc, Inst Elect & Electron Engn, IEEE Components, Packaging & Mfg Technol Soc ID THERMOELECTRIC-MATERIALS; MERIT AB The scientific activities of NIST include the development and distribution of standard reference materials (SRM (TM)) for instrument calibration and inter-laboratory data comparison. Full characterization of a thermoelectric material requires measurement of the electrical resistivity, thermal conductivity, and Seebeck coefficient. While standard reference materials exist or have existed for the first two properties, Seebeck coefficient standard reference materials are not available. In an effort to expedite research efforts in this field, we have initiated a project to develop a Seebeck coefficient SRM (TM) material.. Currently, we have completed a round-robin measurement survey of two candidate materials, Bi2Te3 and constantan (55% Cu and 45% Ni). In this paper, we summarize our plan and development effort, including the results and the methodology used for the round-robin measurement survey. C1 [Lowhorn, Nathan D.; Wong-Ng, W.; Zhang, W.; Lu, Z. Q.; Otani, M.; Thomas, E.; Green, M.] Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA. [Tran, T. N.] Naval Surface Warfare Ctr, Bethesda, MD 20817 USA. [Dilley, N.] Quantum Design, San Diego, CA 92121 USA. [Elsner, N.] Hi Z Technol Inc, San Diego, CA 92126 USA. [Hogan, T.] Michigan State Univ, E Lansing, MI 48824 USA. [Li, Q.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Obara, H.] Adv Inst Sci & Technol, Ibaraki, Japan. [Sharp, J.] Marlow Ind Inc, Dallas, TX 75238 USA. [Venkatasubramanian, R.] Res Triangle Inst, Res Triangle Pk, NC 27709 USA. [Willigan, R.] United Technol Corp, E Hartford, CT 06108 USA. [Yang, J.] GM R&D Ctr, Warren, MI 48090 USA. [Nolas, G.] Univ S Florida, Tampa, FL 33620 USA. [Tritt, T.] Clemson Univ, Clemson, SC 29634 USA. RP Lowhorn, ND (reprint author), Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA. NR 7 TC 0 Z9 0 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1094-2734 BN 978-1-4244-2262-3 J9 INT CONF THERMOELECT PY 2008 BP 366 EP 370 PG 5 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Condensed Matter SC Engineering; Materials Science; Physics GA BIC12 UT WOS:000258325700088 ER PT B AU Patil, NA Lawler, JS McKeever, JW AF Patil, Niranjan A. Lawler, J. S. McKeever, J. W. GP IEEE TI y Determining constant power speed ratio of the induction motor from equivalent circuit parameters SO PROCEEDINGS IEEE SOUTHEASTCON 2008, VOLS 1 AND 2 LA English DT Proceedings Paper CT IEEE SoutheastCon 2008 CY APR 03-06, 2008 CL Huntsville, AL SP IEEE AB The equivalent circuit of the induction machine is used to derive analytic expressions for the constant power speed ratio (CPSR) of an induction motor traction drive. The formulas indicate that while many model parameters influence the CPSR to some extent, it is the maximum permissible magnetizing current magnitude, dc supply voltage, base speed and torque requirement, and leakage inductances that have the greatest effect. In situations where the motor design is fixed the orgy parameters that can be varied by the drive designer are the dc supply voltage and power rating. For such cases explicit formulas are developed to find the supply voltage and power rating that meets a given CPSR requirement. C1 [Patil, Niranjan A.; Lawler, J. S.] Univ Tennessee, Knoxville, TN 37996 USA. [McKeever, J. W.] Oak Ridge Natl Lab, Oak Ridge, TN USA. RP Patil, NA (reprint author), Univ Tennessee, Knoxville, TN 37996 USA. EM npatil@utk.edu; jsl@utk.edu; mckeeverjw@ornl.gov NR 3 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4244-1883-1 PY 2008 BP 460 EP + PG 2 WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BHW78 UT WOS:000257094700096 ER PT S AU Teuscher, C Hansson, AA AF Teuscher, Christof Hansson, Anders A. GP IEEE TI Non-traditional irregular interconnects for massive scale SoC SO PROCEEDINGS OF 2008 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOLS 1-10 SE IEEE International Symposium on Circuits and Systems LA English DT Proceedings Paper CT IEEE International Symposium on Circuits and Systems CY MAY 18-21, 2008 CL Seattle, WA SP IEEE ID NETWORKS; INTEGRATION AB By using setf-assembling fabrication techniques at the cellular, molecular, or atomic scale, it is nowadays possible to create functional assemblies in a mainly bottom-up way that involve massive numbers of interconnected components. However, such assemblies are often highly irregular, unreliable, and heterogeneous. A grand challenge for future and emerging electronics is thus to reliably and efficiently compute and communicate in such systems. The goal of this paper is to illustrate why non-traditional network-on-chip paradigms are promising for massive scale systems and what the limits are. We have previously shown that certain irregular 3D assemblies and interconnects have major advantages over regular 2D and 3D mesh fabrics in terms of latency, throughput, scalability, and the robustness against simple link failures. We present these results from a complex network perspective and look into the scaling properties of different interconnect topologies and routing algorithms in an abstract framework. We argue that only small-world topologies will scale up to massive scale systems. The long term goal in using irregular, fabrication-friendly, and non-traditional interconnects is to eventually be able to cheaply and easily assemble massive scale computing devices that are able to solve specific large-scale problems competitively with traditional top-down fabricated silicon technology. C1 [Teuscher, Christof; Hansson, Anders A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Teuscher, C (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM christof@teuscher.ch; hansson@lanl.gov NR 22 TC 3 Z9 3 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0271-4302 BN 978-1-4244-2078-0 J9 IEEE INT SYMP CIRC S PY 2008 BP 2785 EP 2788 DI 10.1109/ISCAS.2008.4542035 PG 4 WC Computer Science, Hardware & Architecture; Computer Science, Information Systems; Engineering, Electrical & Electronic; Physics, Applied; Telecommunications SC Computer Science; Engineering; Physics; Telecommunications GA BID36 UT WOS:000258532102157 ER PT B AU Iisa, K Koch, D Frederick, J Realff, M AF Iisa, Kristiina Koch, David Frederick, Jim Realff, Matthew BE Jin, Y Zhai, H Li, Z TI Production of Ethanol from Forest Residues and Hog Fuel in a Pulp Mill SO PROCEEDINGS OF INTERNATIONAL CONFERENCE ON PULPING, PAPERMAKING AND BIOTECHNOLOGY 2008: ICPPB '08, VOL I LA English DT Proceedings Paper CT International Conference on Pulping, Papermaking and Biotechnology CY NOV 04-06, 2008 CL Nanjing Forestry Univ, Nanjing, PEOPLES R CHINA SP Tech Assoc Pulp & Paper Ind, Engn Div & Pulp Manufact Div, Natl Nat Sci Fdn, China Tech Assoc Paper Ind, Japan Tech Assoc Pulp & Paper Ind, N Carolina Univ, Dept Wood & Paper Sci, Univ Tokyo, Grad Sch Agr & Life Sci, Jiangsu Provinicial Key Lab Pulp & Paper Sci & Technol, Jiangsu Tech Assoc Paper Ind, Nanjing Forestry Univ, Pulp & Paper Fdn HO Nanjing Forestry Univ AB Liquid transportation fuels can be produced by gasification of carbon containing biomass to syngas (a gaseous mixture of CO and H(2)) with subsequent conversion of the syngas to fuels. One possible process is the so called mixed alcohols synthesis, which produces a mixture of ethanol and higher alcohols. This study examined the economics of ethanol production from forest residues via gasification and the mixed alcohol synthesis. The process was evaluated with the help of Aspen Plus, a process simulation software package. The feedstock for the modeling cases was southern pine residues, and the plant sizes were 715-2,200 dry tons/day. The results indicated that ethanol can be produced at prices competitive with corn ethanol. The feedstock cost and the plant size had the largest impact on the minimum ethanol selling prices of the variables investigated. C1 [Iisa, Kristiina] Natl Renewable Energy Lab, Golden, CO USA. RP Iisa, K (reprint author), Natl Renewable Energy Lab, Golden, CO USA. NR 8 TC 0 Z9 0 U1 0 U2 3 PU NANJING FORESTRY UNIV PI NANJING PA LONGPAN RD, NANJING, JIANGSU 210037, PEOPLES R CHINA BN 978-988-17682-2-3 PY 2008 BP 190 EP 196 PG 7 WC Materials Science, Paper & Wood SC Materials Science GA BJE02 UT WOS:000265073800028 ER PT B AU Blazewicz, J Kasprzak, M Swiercz, A Figlerowicz, M Gawron, P Platt, D Szajkowski, L AF Blazewicz, Jacek Kasprzak, Marta Swiercz, Aleksandra Figlerowicz, Marek Gawron, Piotr Platt, Darren Szajkowski, Lukasz BE Lee, R Muenchaisri, P Dosch, W TI Parallel implementation of the novel approach to genome assembly SO PROCEEDINGS OF NINTH ACIS INTERNATIONAL CONFERENCE ON SOFTWARE ENGINEERING, ARTIFICIAL INTELLIGENCE, NETWORKING AND PARALLEL/DISTRIBUTED COMPUTING LA English DT Proceedings Paper CT 9th International Conference on Software Engineering Artificial Intelligence, Networking and Parallel/Distributed Computing CY AUG 06-08, 2008 CL Phuket, THAILAND SP Int Assoc Comp & Informat Sci, IEEE, IEEE Comp Soc, UniNet, Thailand Convent & Exhibit Bureau ID DNA; HYBRIDIZATION AB DNA assembly problem is well known for its high complexity both on biological and computational levels. Traditional laboratory approach to the problem, which involves DNA sequencing by hybridization or by gel electrophoresis, entails a lot of errors coming from experimental and algorithmic stages. DNA sequences constituting the traditional assembly input have lengths about a few hundreds of nucleotides and they cover each other rather sparsely. A new biochemical approach to DNA sequencing, proposed recently, gives highly reliable output of relatively low cost and in short time. It is 454 sequencing, based on the pyrosequencing protocol, owned by 454 Life Sciences Corporation. The produced sequences are shorter (about 100-200 nucleotides) but their coverage in the assembled sequence is very dense. In the paper we propose a parallel implementation of an algorithm dealing well with such data and outperforming other assembly algorithms used in practice. The algorithm is a heuristic based on a graph model, the graph being built on the set of input sequences. Computational tests were performed on real data obtained from the 454 sequencer during sequencing the genome of bacteria Prochlorococcus marinus. C1 [Blazewicz, Jacek; Kasprzak, Marta; Swiercz, Aleksandra] Poznan Univ Tech, Inst Comp Sci, Piotrowo 2, PL-60965 Poznan, Poland. [Blazewicz, Jacek; Kasprzak, Marta; Swiercz, Aleksandra; Figlerowicz, Marek] Polish Acad Sci, Inst Bioorgan Chem, PL-61704 Poznan, Poland. [Gawron, Piotr] Poznan Univ Tech, Inst Comp Sci, P-60965 Poznan, Poland. [Platt, Darren; Szajkowski, Lukasz] Joint Genome Inst, Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Blazewicz, J (reprint author), Poznan Univ Tech, Inst Comp Sci, Piotrowo 2, PL-60965 Poznan, Poland. EM jblazewicz@cs.put.poznan.pl RI Kasprzak, Marta/H-9242-2012; Swiercz, Aleksandra/K-6507-2014; Blazewicz, Jacek/L-5597-2014; Figlerowicz, Marek/B-9550-2015 OI Blazewicz, Jacek/0000-0001-8326-1094; FU Polish Ministry of Science and Higher Education FX The research has been partially supported by a grant of the Polish Ministry of Science and Higher Education. NR 22 TC 2 Z9 2 U1 0 U2 3 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 USA BN 978-0-7695-3263-9 PY 2008 BP 732 EP + DI 10.1109/SNPD.2008.47 PG 2 WC Computer Science, Artificial Intelligence; Computer Science, Hardware & Architecture; Computer Science, Information Systems; Computer Science, Software Engineering; Computer Science, Theory & Methods SC Computer Science GA BIG63 UT WOS:000259363600121 ER PT B AU Burkert, VD AF Burkert, V. D. BE Hammer, HW Kleber, V Thoma, U Schmiedan, H TI Probing the nucleon structure with CLAS Highlights of recent results SO PROCEEDINGS OF THE 11TH WORKSHOP ON THE PHYSICS OF EXCITED NUCLEONS LA English DT Proceedings Paper CT 11th Workshop on the Physics of Excited Nucleons CY SEP 05-08, 2007 CL Univ Bonn, Bonn, GERMANY SP Deutsch Forschungsgemeinsch, Forschungszentrum Julich, Univ Bonn, CAEN SpA, sysGen GmbH, W IE NE R Plein & Baus GmbH HO Univ Bonn ID ELECTROPRODUCTION; RESONANCE AB An overview of recent results weith CLAS is presented with emphasis on the nucleon resonance program and related topics. C1 Jefferson Lab, CLAS Collaborat, Newport News, VA USA. RP Burkert, VD (reprint author), Jefferson Lab, CLAS Collaborat, Newport News, VA USA. EM burkert@jlab.org NR 38 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY BN 978-3-540-85143-1 PY 2008 BP 7 EP 13 PG 7 WC Physics, Applied; Physics, Nuclear SC Physics GA BII37 UT WOS:000259692400002 ER PT B AU Richards, D AF Richards, D. BE Hammer, HW Kleber, V Thoma, U Schmiedan, H TI Nucleon structure from lattice QCD SO PROCEEDINGS OF THE 11TH WORKSHOP ON THE PHYSICS OF EXCITED NUCLEONS LA English DT Proceedings Paper CT 11th Workshop on the Physics of Excited Nucleons CY SEP 05-08, 2007 CL Univ Bonn, Bonn, GERMANY SP Deutsch Forschungsgemeinsch, Forschungszentrum Julich, Univ Bonn, CAEN SpA, sysGen GmbH, W IE NE R Plein & Baus GmbH HO Univ Bonn ID DISTRIBUTIONS; SCATTERING; FERMIONS AB Recent advances in lattice field theory, in computer technology and in chiral perturbation theory have enabled lattice QCD to emerge as a powerful quantitative tool in understanding hadron structure. I describe recent progress in the computation of the nucleon form factors and moments of parton distribution functions, before proceeding to describe lattice studies of the Generalized Parton Distributions (GPDs). In particular, I show how lattice studies of GPDs contribute to building a three-dimensional picture of the proton, I conclude by describing the prospects for studying the structure of resonances from lattice QCD. C1 Jefferson Lab, Newport News, VA 23606 USA. RP Richards, D (reprint author), Jefferson Lab, 12000 Jefferson Ave, Newport News, VA 23606 USA. NR 30 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY BN 978-3-540-85143-1 PY 2008 BP 40 EP 45 PG 6 WC Physics, Applied; Physics, Nuclear SC Physics GA BII37 UT WOS:000259692400008 ER PT B AU Mokeev, VI Burkert, VD Elouadrhiri, L Fedotov, GV Golovach, EN Isupov, EL Ishkhanov, BS Shvedunov, NV AF Mokeev, V. I. Burkert, V. D. Elouadrhiri, L. Fedotov, G. V. Golovach, E. N. Isupov, E. L. Ishkhanov, B. S. Shvedunov, N. V. CA CLAS Collaboration BE Hammer, HW Kleber, V Thoma, U Schmiedan, H TI Analysis of CLAS data on double charged-pion electroproduction SO PROCEEDINGS OF THE 11TH WORKSHOP ON THE PHYSICS OF EXCITED NUCLEONS LA English DT Proceedings Paper CT 11th Workshop on the Physics of Excited Nucleons CY SEP 05-08, 2007 CL Univ Bonn, Bonn, GERMANY SP Deutsch Forschungsgemeinsch, Forschungszentrum Julich, Univ Bonn, CAEN SpA, sysGen GmbH, W IE NE R Plein & Baus GmbH HO Univ Bonn ID NUCLEON-RESONANCE; VIRTUAL PHOTONS; PROTON; REGION; MODEL AB Recent developments in phenomenological analysis of the CLAS data on 2 pi electroproduction are presented. The contributions from the different isobar channels and the P-11(1440), D-13(1520) electrocouplings at Q(2) from 0.25 to 0.6 GeV2 were determined from the analysis of comprehensive data on differential and fully integrated 2 pi cross sections. C1 [Mokeev, V. I.; Burkert, V. D.; Elouadrhiri, L.] Jefferson Lab, 12000 Jefferson Ave, Newport News, VA 23606 USA. [Mokeev, V. I.; Fedotov, G. V.; Golovach, E. N.; Isupov, E. L.; Ishkhanov, B. S.; Shvedunov, N. V.] Moscow MV Lomonosov State Univ, Skobeltsyn Nucl Phys Inst, Moscow 119899, Russia. RP Mokeev, VI (reprint author), Jefferson Lab, 12000 Jefferson Ave, Newport News, VA 23606 USA. EM mokeev@jlab.org; burkert@jlab.org RI Ishkhanov, Boris/E-1431-2012 FU U.S. DOE [DE-AC05-060R23177]; Jefferson Science Associates; LLC FX The work was supported by U.S. DOE contract DE-AC05-060R23177 under which Jefferson Science Associates, LLC, operates the Jefferson Lab. NR 17 TC 5 Z9 5 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY BN 978-3-540-85143-1 PY 2008 BP 76 EP + PG 2 WC Physics, Applied; Physics, Nuclear SC Physics GA BII37 UT WOS:000259692400014 ER EF