FN Thomson Reuters Web of Science™ VR 1.0 PT S AU Olson, DC Miedaner, A Curtis, C Rumbles, G Collins, RT Gregg, BA Ginley, DS Shaheen, SE AF Olson, DC Miedaner, A Curtis, C Rumbles, G Collins, RT Gregg, BA Ginley, DS Shaheen, SE GP IEEE TI Conjugated polymer/nanostructured oxide semiconductor composite photovoltaic devices SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE AB Organic semiconductor-based photovoltaic devices offer the promise of low cost photovoltaic technology that can be manufactured via large-scale, roll-to-roll printing techniques. Existing organic photovoltaic devices are currently limited to solar power conversion efficiencies of 3-5%. The reasons for this include poor overlap between the absorption spectrum of the organic chromophores and the solar spectrum, non-ideal band alignment between the donor and acceptor species, and low charge carrier mobilities resulting from the disordered nature of organic semiconductors. To address the latter issues, we are investigating the development of nanostructured oxide/conjugated polymer composite photovoltaic (PV) devices. These composites can take advantage of the high electron mobilities attainable in oxide semiconductors and can be fabricated using low-temperature solution-based growth techniques. Additionally, the morphology of the composite can be controlled in a systematic way through control of the nanostructured oxide growth. For both ZnO and TiO2, nanostructures that are vertically aligned with respect to the substrate can be grown. Here we discuss the fabrication of such nanostructures and present preliminary results from ZnO nanocarpet/poly(3-hexylthiophene) composite PV devices. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Olson, DC (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. RI Shaheen, Sean/M-7893-2013; Collins, Reuben/O-2545-2014; OI Collins, Reuben/0000-0001-7910-3819; Rumbles, Garry/0000-0003-0776-1462 NR 8 TC 1 Z9 1 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 71 EP 73 DI 10.1109/PVSC.2005.1488071 PG 3 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400015 ER PT S AU Perkins, JD Taylor, MP van Hest, MFAM Teplin, CW Alleman, JL Dabney, MS Gedvilas, LM Keyes, BM To, B Readey, DW Delahoy, AE Guo, S Ginley, DS AF Perkins, JD Taylor, MP van Hest, MFAM Teplin, CW Alleman, JL Dabney, MS Gedvilas, LM Keyes, BM To, B Readey, DW Delahoy, AE Guo, S Ginley, DS GP IEEE TI Combinatorial optimization of transparent conducting oxides (TCOS) for PV SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE ID THIN-FILMS; HIGH-MOBILITY AB Transparent conducting oxides (TCOs) can serve a variety of important functions in thin film photovoltaics such as transparent electrical contacts, antireflection coatings and chemical barriers. Two areas of particular interest are TCOs that can be deposited at low temperatures and TCOs with high carrier mobilities. We have employed combinatorial high-throughput approaches to investigate both these areas. Conductivities of sigma = 2500 Omega(-1)-cm(-1) have been obtained for In-Zn-O (IZO) films deposited at 100 degrees C and sigma > 5000 Q-1-cm(-1) for In-Ti-O (ITIO) and In-Mo-O (IMO) films deposited at 550 degrees C. The highest mobility obtained was 83 cm(2) N-sec for ITiO deposited at 550 degrees C. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Perkins, JD (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 9 TC 3 Z9 3 U1 1 U2 7 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 145 EP 147 DI 10.1109/PVSC.2005.1488090 PG 3 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400034 ER PT S AU Li, X Asher, SE Keyes, BM Moutinho, HR Luther, J Coutts, TJ AF Li, X Asher, SE Keyes, BM Moutinho, HR Luther, J Coutts, TJ GP IEEE TI p-type ZnO thin films grown by MOCVD SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE ID DEPOSITION AB ZnO has demonstrated a possibility to be doped as a p-type by using nitrogen and other group-V elements. A high nitrogen doping concentration by metalorganic chemical vapor deposition (MOCVD) with nitric oxide (NO) gas has been achieved. However, the processing window for obtaining the p-type ZnO:N film is very narrow, and the hole concentration is typically low. Possible compensation and passivation effects have been studied. Hydrogen and carbon elements are detected by secondary-ion mass spectroscopy (SIMS). Considering the other experimental and modeling results, we believe that the impurities inadvertently incorporated with the zinc precursor could be compensating or passivating the nitrogen acceptor and result in the low hole concentration. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Li, X (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. NR 19 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 152 EP 154 DI 10.1109/PVSC.2005.1488092 PG 3 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400036 ER PT S AU von Roedern, B Zweibel, K Ullal, HS AF von Roedern, B Zweibel, K Ullal, HS GP IEEE TI The role of polycrystalline thin-film PV technologies for achieving mid-term market-competitive PV modules SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE ID EFFICIENCY AB This paper reviews the current commercial status of CuInSe2 alloys (collectively, CIS) and CdTe-based photovoltaic (PV) modules, comparing the performance of commercial products with the results achieved for solar cell and prototype module champions. We provide an update for these PV cell and module technologies, and also compare CIS and CdTe performance levels to the results achieved by the crystalline Si PV industry. This comparison shows that CIS and CdTe module technology presently offers the best (and perhaps only) approach for significantly exceeding the cost/performance levels established by crystalline Si PV technologies. A semi-empirical methodology is used for comparing "champion" solar cell and prototype module data with performance achieved on manufacturing lines. Using a conservative assumption that thin-film technologies will eliminate the 40% of PV module costs arising from the Si wafer or ribbon, we estimate the future performance of all established PV module candidates, and conclude that, based on 2004 knowledge about each PV technology, CIS and CdTe should provide cost-competitive advantages over crystalline Si. C1 Natl Renewable Energy Lab, Natl Ctr Photovoltaics, Golden, CO 80401 USA. RP von Roedern, B (reprint author), Natl Renewable Energy Lab, Natl Ctr Photovoltaics, 1617 Cole Blvd, Golden, CO 80401 USA. NR 14 TC 1 Z9 1 U1 1 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 183 EP 188 DI 10.1109/PVSC.2005.1488101 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400044 ER PT S AU Ramanathan, K Keane, J Noufi, R AF Ramanathan, K Keane, J Noufi, R GP IEEE TI Properties of high-efficiency CIGS thin-film solar cells SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE AB We present experimental results in three areas. Solar cells with an efficiency of 19% have been fabricated with an absorber bandgap in the range of 1.1-1.2 eV. Properties of solar cells fabricated with and without an undoped ZnCi layer were compared. The data show that high efficiency cells can be fabricated without using the high-resisitivity or undoped ZnCi layer. Properties of CIGS solar cells were fabricated from thin absorbers (1 mu m) deposited by the three-stage process and simultaneous co-deposition of all the elements. In both cases, solar cells with efficiencies of 16%-17% are obtained. C1 Natl Renewable Energy Lab, Natl Ctr Photovoltaics, Golden, CO 80401 USA. RP Ramanathan, K (reprint author), Natl Renewable Energy Lab, Natl Ctr Photovoltaics, 1617 Cole Blvd, Golden, CO 80401 USA. NR 6 TC 4 Z9 4 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 195 EP 198 DI 10.1109/PVSC.2005.1488103 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400046 ER PT S AU Nelson, B Robbins, S Sheldon, P AF Nelson, B Robbins, S Sheldon, P GP IEEE TI The NCPV process integration project: Purpose, status, and direction SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE AB The primary purpose of the process integration project of the National Center for Photovoltaics (NCPV) is to develop an infrastructure that will allow researchers to gain new knowledge that is difficult-if not impossible-to obtain with existing equipment. This difficulty is due, in part, to the state of our existing tool set, which lacks sufficient in-situ or real-time measurement capabilities, or lacks access to analytical tools where the sample remains in a controlled environment between deposition and processing or measurement. This new infrastructure will provide flexible and robust integration of deposition, processing (etching, annealing, etc.), and characterization tools via a standardized transfer interface such that samples move between tools in a controlled ambient. The standardization of control and data acquisition software schemes, sample handing, and equipment components will allow us to perform research more efficiently; facilitating collaborations and technique development. C1 Natl Renewable Energy Lab, Natl Ctr Photovoltaics, Golden, CO 80401 USA. RP Nelson, B (reprint author), Natl Renewable Energy Lab, Natl Ctr Photovoltaics, Golden, CO 80401 USA. NR 9 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 243 EP 246 DI 10.1109/PVSC.2005.1488114 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400057 ER PT S AU Jiang, CS Noufi, R Ramanathan, K AbuShama, JA Moutinho, HR Al-Jassim, MM AF Jiang, CS Noufi, R Ramanathan, K AbuShama, JA Moutinho, HR Al-Jassim, MM GP IEEE TI AFM-based microelectrical characterization of grain boundaries in Cu(In,Ga)Se-2 thin films SO CONFERENCE RECORD OF THE THIRTY-FIRST IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE - 2005 SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE ID SOLAR-CELLS; MICROSCOPY AB We report on a direct measurement of two-dimensional potential distribution on the surface of Cu(ln,Ga)Se-2 thin films using a nanoscale electrical characterization of scanning Kelvin probe microscopy both in air and in ultra-high vacuum. The potential measurement reveals a higher surface potential or a smaller work function on grain boundaries (GBs) of the film than on the grain surfaces. This demonstrates the existence of a local built-in potential on GBs, and the GB is positively charged. The role of the built-in potential in device performance was further examined and found to be positive, by tuning Ga content or band gap of the film. With increasing Ga content, the potential drops sharply in a Ga range of 28%similar to 38%. Comparing the change in the built-in potential to the theoretical and experimental photoconversion efficiencies, we conclude that the potential plays a significant role in the device conversion efficiency of NREL's three-stage Cu(In,Ga)Se2 device. C1 NREL, Golden, CO 80401 USA. RP NREL, 1617 Cole Blvd, Golden, CO 80401 USA. RI jiang, chun-sheng/F-7839-2012 NR 13 TC 1 Z9 1 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 251 EP 254 DI 10.1109/PVSC.2005.1488116 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400059 ER PT S AU Perkins, CL Hasoon, FS Al-Thani, HA Asher, SE Sheldon, P AF Perkins, CL Hasoon, FS Al-Thani, HA Asher, SE Sheldon, P GP IEEE TI XPS and UPS investigation of NH4OH-exposed Cu(In,Ga)Se-2 thin films SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE ID SOLAR-CELLS; HETEROJUNCTION; CUINSE2; CUGASE2 AB Photoelectron spectroscopy was used to determine the compositional and electronic changes occurring in Cu(in,Ga)Se-2 thin films as a result of immersion in aqueous ammonia solution. We find that NH4OH-treated CIGS surfaces are preferentially etched of indium and gallium, resulting in the formation of a thin layer of a degenerate Cu-Se compound that we tentatively identify as Cu2Se. The work function of ammonia-treated samples is found to increase by 0.6 eV relative to as-grown CIGS thin films. The uniformity of chemical bath effects (etching & deposition) was found to be improved by the addition to the bath of a non-ionic surfactant. Initial device results show that the new surfactant-based chemical bath deposition (CBD) method may lead to better and thinner CdS buffer layers. C1 Natl Renewable Energy Lab, Golden, CO USA. RP Perkins, CL (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd,MS-3215, Golden, CO USA. NR 12 TC 0 Z9 0 U1 6 U2 19 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 255 EP 258 DI 10.1109/PVSC.2005.1488117 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400060 ER PT S AU Young, DL Ramanathan, K Crandall, RS AF Young, DL Ramanathan, K Crandall, RS GP IEEE TI Unusual capacitance emission transients in CIGS caused by large defect entropy changes SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE ID MEYER-NELDEL RULE; SPECTROSCOPY; HETEROJUNCTIONS; CUIN1-XGAXSE2; DEVICES; STATES; BULK AB Capacitance transient data from bias-pulse experiments on CdS/CIGS solar cells show an unusual behavior at high temperatures. Above 350K a minority carrier trap, with a larger activation energy than a majority carrier trap, emits faster than the lower activation-energy minority trap. A simple enthalpy model for trap emission cannot explain this counterintuitive behavior, but the more complete Gibbs free energy model that includes entropy can explain it. We show that entropy plays a major role in carrier emission from traps in CIGS. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Young, DL (reprint author), Natl Renewable Energy Lab, 1617 Cole,Blvd, Golden, CO 80401 USA. NR 19 TC 0 Z9 0 U1 0 U2 4 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 259 EP 262 DI 10.1109/PVSC.2005.1488118 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400061 ER PT S AU Dhere, R Ramanathan, K Keane, J Zhou, J Moutinho, H Asher, S Noufi, R AF Dhere, R Ramanathan, K Keane, J Zhou, J Moutinho, H Asher, S Noufi, R GP IEEE TI Effect of Na incorporation on the growth and properties of CdTe/CdS devices SO CONFERENCE RECORD OF THE THIRTY-FIRST IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE - 2005 SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE AB Sodium is known to enhance p-type doping in copper indium diselenide (CIS)-based devices fabricated on soda-ime glass substrates, and similar amounts of Na are present in commercial cadmium telluride (CdTe) devices. We present the results on the effects of Na incorporation on the properties of CdTe/CdS solar cells prepared on borosilicate glass substrates. A NaF layer 10 to 30 nm thick was incorporated at either the CdS/CdTe interface or on the CdTe surface, as a source of Na. CdTe layers were deposited by close-spaced sublimation at substrate temperatures from 425 degrees C (LT) to 620 degrees C (HT), followed by heat-treatment in the presence of CdCl2 vapor. Atomic force microscopy analysis showed that the samples with NaF at the CdS/CdTe interface deposited in He ambient have larger grains with a sub-grain structure that disappears after CdCl2 heat treatment accompanied by an increase in grain size. Samples deposited in O-2 ambient have smaller grains without a sub-grain structure. For samples with NaF deposited on the CdTe surface, LT samples with CdCl2 heat treatment showed a morphology similar to samples without NaF layers; but samples heat-treated in He ambient at 500 degrees C prior to CdCl2 treatment showed a different microstructure with platelets on the surface. HT samples with a NaF layer at the CdTe surface showed an additional layer at the surface with both types of heat treatments, indicating that NaF does not react readily for these samples. In addition to the discussion of the effect of Na incorporation on the material properties, we will include preliminary data on the effect of Na incorporation at the interface or surface on device properties. C1 NREL, Golden, CO 80401 USA. RP NREL, Golden, CO 80401 USA. NR 5 TC 2 Z9 2 U1 0 U2 9 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 279 EP 282 DI 10.1109/PVSC.2005.1488123 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400066 ER PT S AU Gessert, TA Smith, S Moriatry, T Young, M Asher, S Johnston, S Duda, A DeHart, C AF Gessert, TA Smith, S Moriatry, T Young, M Asher, S Johnston, S Duda, A DeHart, C GP IEEE TI Evolution of CdS/CdTe device performance during Cu diffusion SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE AB Cu diffusion from a ZnTe:Cu/Ti back contact onto CdS/CdTe thin-film solar cells is studied. We find if Cu diffusion is insufficient, the entire CdTe layer is depleted. However, if Cu diffusion is excessive, the depletion width can become too narrow to provide optimum current collection. This analysis suggests that most contact processes used for CdS/CdTe devices are optimized (often unknowingly) to result in a depletion width that extends just far enough into the CdTe to yield the highest possible field in the region where light absorption occurs. Analysis of the samples with very high Cu concentration also suggests that Cu doping of CdS may affect carrier collection from the CdS. C1 NREL, Golden, CO 80401 USA. RP Gessert, TA (reprint author), NREL, 1617 Cole Blvd, Golden, CO 80401 USA. NR 9 TC 6 Z9 6 U1 0 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 291 EP 294 DI 10.1109/PVSC.2005.1488126 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400069 ER PT S AU AbuShama, J Noufi, R Johnston, S Ward, S Wu, X AF AbuShama, J Noufi, R Johnston, S Ward, S Wu, X GP IEEE TI Improved performance in CuInSe2 and Surface-modified CuGaSe2 solar cells SO CONFERENCE RECORD OF THE THIRTY-FIRST IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE - 2005 SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE AB In this paper, we present an update and review on the progress made in the development of low-bandgap CuInSe2 (CIS) and wide-bandgap CuGaSe2 (CGS) solar cells. Our research project is primarily concerned with the optimization of the bottom and top cells of the tandem solar cell. This past year, we established new record total-area efficiencies of 15.0% and 10.2% for CIS and surface-modified CGS solar cells, respectively. These achievements were possible by modifying the growth process for CIS and CGS absorbers. We attempt to modify the surface region of the CGS absorber to be CIGS-like in composition. We also have designed a mechanical-stacked tandem solar cell where the 15% CIS cell serves as the bottom cell and transparent CdTe cell serves as the top cell. The NREL-confirmed total-area efficiency for this CdTe/CIS tandem device is 15.31%. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 5 TC 7 Z9 7 U1 0 U2 5 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 299 EP 302 DI 10.1109/PVSC.2005.1488128 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400071 ER PT S AU Albin, D McMahon, T Berniard, T Pankow, J Demtsu, S Noufi, R AF Albin, D McMahon, T Berniard, T Pankow, J Demtsu, S Noufi, R GP IEEE TI Experiments involving correlations between CdTe solar cell fabrication history and intrinsic device stability SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE AB An orthogonal full-factorial design was used to study the effect of CdS and CdTe layer thickness, oxygen ambient during vapor CdCl2 (VCC) and the use of nitric-phosphoric (NP) acid as a pre-contact etch on the initial and stressed performance of CdS/CdTe small-area devices. The best initial device efficiency (using thinner CdS, thicker CdTe, no oxygen during VCC, and NP etch) also showed poor stability. Increasing the CdS thickness significantly improved stability with only a slight decrease in resulting initial performance. All devices used a thin margin of CdTe around the perimeter of the backcontact that was shown to significantly reduce catastrophic degradation and improve overall test statistics. The latter degradation is modeled by the formation of a weak-diode/low shunt resistance localized near the edge of finished devices. This shunting is believed to occur through the CdS/CdTe interface, rather than along the device edge, and is exacerbated by thinner CdS films and fabrication defects resulting in direct metal-CdTe contact. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Albin, D (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 6 TC 1 Z9 1 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 315 EP 318 DI 10.1109/PVSC.2005.1488132 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400075 ER PT S AU Olsen, LC Kundu, SN Bonham, CC Gross, M AF Olsen, LC Kundu, SN Bonham, CC Gross, M GP IEEE TI Barrier coatings for CIGSS and CdTe cells SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE AB Barrier coatings for CIGSS and CdTe thin film solar cells will be critical for achieving reliable and long lived devices. Coatings based on a multilayer polymer/oxide approach developed at PNNL are being investigated as effective encapsulation of thin film solar cells. CIGSS circuits provided by Shell Solar Industries (SSI) and CdTe cells fabricated by the W.S., Sampath and coworkers at Colorado State University (CSU) are being utilized for the study. Barrier coatings involve deposition of a relatively thick polymer layer to establish a smooth surface for subsequent deposition of an oxide layer. Deposition of the first polymer/oxide dyad is followed by one or more additional pairs of polymer/oxide dyads. Very positive results have been obtained for encapsulated CIGSS circuits and CdTe cells subjected to 60 degrees C and 90% relative humidity. C1 Pacific NW Natl Lab, Richland, WA 99354 USA. RP Olsen, LC (reprint author), Pacific NW Natl Lab, Richland, WA 99354 USA. 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 SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 327 EP 330 DI 10.1109/PVSC.2005.1488135 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400078 ER PT S AU del Cueto, JA AF del Cueto, JA GP IEEE TI Closed-form solutions and parameterization of the problem of current-voltage performance of polycrystalline photovoltaic modules deployed at fixed latitude tilt SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE AB One obstacle to wider market penetration for thin-film polycrystalline photovoltaic (PV) modules is the lack of field performance data, notably temperature-coefficient data for the current-voltage (I-V) characteristics over all irradiance levels encountered in the field. Generally, temperature coefficient and performance data are available only in a restricted range of illumination around I-sun intensity. In this paper, the I-V performance data are presented, analyzed, and parameterized across a wide range of illumination levels and temperatures, allowing the modeling of the performance for three polycrystalline PV technologies: cadmium telluride, copper indium diselenide, and polycrystalline silicon. The data are scrutinized for clear-sky and diffuse-illumination conditions. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP del Cueto, JA (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. NR 5 TC 4 Z9 4 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 331 EP 335 DI 10.1109/PVSC.2005.1488136 PG 5 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400079 ER PT S AU Lany, S Zhao, YJ Persson, C Zunger, A AF Lany, S Zhao, YJ Persson, C Zunger, A GP IEEE TI n-type doping principles for doping CulnSe(2) and CuGaSe2 with Cl, Br, l, Mg, Zn, and Cd SO CONFERENCE RECORD OF THE THIRTY-FIRST IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE - 2005 SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE ID SOLAR-CELLS; GAP; CUINSE2 AB We develop n-type doping principles for chalcopyrite photovoltaic materials, considering donor doping of CuInSe2 and CuGaSe2 by halogen (X = Cl, Br, I), and divalent (M = Mg, Zn, Cd) atoms. We determine equilibrium defect concentrations as a function of growth conditions, using defect formation energies obtained by first-principles supercell calculations. We find: (I) In CuInSe2 under Se-poor conditions, halogen doping does not yield a higher net n-type doping level than intrinsic doping by InCu- (ii) In CulnSe(2), divalent doping leads to a higher net n-doping, but a high compensation level is present. (iii) In CuGaS2 neither halogen nor divalent doping yields net n-type doping under equilibrium conditions, because formation of Cu vacancies pins the Fermi level low in the gap. This pinning of E-F also limits the amount of band bending that can be obtained inside the Cu(In,Ga)Se-2 absorber of a solar cell. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Natl Renewable Energy Lab, Golden, CO 80401 USA. RI Zhao, Yu-Jun/A-1219-2011 OI Zhao, Yu-Jun/0000-0002-6923-1099 NR 11 TC 1 Z9 1 U1 0 U2 4 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 343 EP 346 DI 10.1109/PVSC.2005.1488139 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400082 ER PT S AU McMahon, TJ Berniard, TJ Albin, DS Demtsu, SH AF McMahon, TJ Berniard, TJ Albin, DS Demtsu, SH GP IEEE TI Excess dark currents and transients in thin-film CdTe solar cells: Implications for cell stability and encapsulation of scribe lines and cell ends in modules SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE AB We have isolated a non-linear, metastable, shunt-path failure mechanism located at the CdS/CdTe cell edge. In such cases, most performance loss, usually erratic, can be associated with the shunt path. We studied these shunt paths using dark current-transients and infrared (ir) imaging and find only one shunt path per cell and only at the cell corner wall, even in badly degraded cells. The effect on diminishing the cell's efficiency far exceeds what would be expected from the cell's linear shunt-resistance value. We propose that current transients and ir imaging be used as a "fingerprint" of the source and magnitude of excess currents to evaluate the contribution of scribe-line edges and cell ends in thin-film module performance and degradation due to environmental stress. Protection afforded by, or contamination due to, new or currently used encapsulants can then be evaluated. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP McMahon, TJ (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 6 TC 0 Z9 0 U1 2 U2 4 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 363 EP 366 DI 10.1109/PVSC.2005.1488144 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400087 ER PT S AU Syrnko-Davies, M AF Syrnko-Davies, M GP IEEE TI Status of high performance PV: Polycrystalline thin-film tandems SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE AB The High-Performance Photovoltaic (HiPerf PV) Project was initiated by the U.S. Department of Energy to substantially increase the viability of photovoltaics (PV) for cost-competitive applications so that PV ran contribute significantly to our energy supply and our environment. The HiPerf PV Project aims at exploring the ultimate performance limits of existing PV technologies, approximately doubling their sunlight-to-electricity conversion efficiencies during its course. This work includes bringing thin-film cells and modules toward 25% and 20% efficiencies, respectively; and developing multijunction concentrator cells and modules able to convert more than one-third of the sun's energy to electricity (i.e., 33% efficiency). This paper will address recent accomplishments of the NREL in-house research effort involving polycrystalline thin-film tandems, as well as the research efforts under way in the subcontracted area. C1 Natl Renewable Energy Lab, Golden, CO USA. RP Syrnko-Davies, M (reprint author), Natl Renewable Energy Lab, Golden, CO USA. NR 4 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 410 EP 413 DI 10.1109/PVSC.2005.1488156 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400099 ER PT S AU Olsen, LC Kundu, SN AF Olsen, LC Kundu, SN GP IEEE TI Effects of moisture on CIGSS solar cells SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE AB This paper focuses on the effect of moisture on CIGSS cells made by Shell Solar Industries (SSI). These studies were carried out with 10 cm x 10 cm monolithically integrated CIGSS circuits and individual cells diced from circuits. Cells under investigation were subjected to an environment of 600 degrees C /90% RH and characterized at various time intervals. Illuminated and dark I-V characteristics, and quantum efficiency were measured versus time. The effects of moisture on the sheet resistance of the ZnO TCO and the Zn/O ratio were also examined. Efficiency of uncoated CIGSS cells subjected to the accelerated test conditions degrade from 10 % to 1 % within a few hundred hours. Two significant effects are found to contribute to the degradation, the sheet resistance of ZnO increases significantly, and the junction recombination losses increase. C1 Pacific NW Natl Lab, Richland, WA 99354 USA. RP Olsen, LC (reprint author), Pacific NW Natl Lab, Richland, WA 99354 USA. NR 1 TC 1 Z9 1 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 487 EP 490 DI 10.1109/PVSC.2005.1488176 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400119 ER PT S AU Pern, FJ Jorgensen, GJ AF Pern, FJ Jorgensen, GJ GP IEEE TI Enhanced adhesion of EVA laminates to primed glass substrates subjected to damp heat exposure SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE ID HYDROLYTIC STABILITY; SILANES AB We investigated the effectiveness of glass-surface priming to promote enhanced adhesion of EVA laminates during damp-heat exposure at 85 degrees C and 85% relative humidity. The primary objective was to develop advanced encapsulant formulations by incorporation of various primer formulations that exhibit improved adhesion during damp-heat exposure. Several primer formulations were identified that greatly enhanced the EVA adhesion strength, including to the extent that peeling could not be initiated, even for the laminates of the glass substrate/fast-cure EVA15295P/TPE backsheet (a Tedlar/polyester/EVA tri-laminate) that were exposed in a damp-heat test chamber for more than 750 h. The results show that a synergistic increase in the interfacial hydrophobicity, siloxane density, and cross-linking density are the key attributes to the improvement in the EVA adhesion strength. C1 Natl Renewable Energy Lab, Natl Ctr Photovolta, Golden, CO 80401 USA. RP Pern, FJ (reprint author), Natl Renewable Energy Lab, Natl Ctr Photovolta, 1617 Cole Blvd, Golden, CO 80401 USA. NR 19 TC 2 Z9 2 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 495 EP 498 DI 10.1109/PVSC.2005.1488178 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400121 ER PT S AU Jorgensen, GJ Terwilliger, KM Kempe, MD McMahon, TJ AF Jorgensen, GJ Terwilliger, KM Kempe, MD McMahon, TJ GP IEEE TI Testing of packaging materials for improved PV module reliability SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE AB A number of candidate alternative encapsulant and soft backsheet materials have been evaluated in terms of their suitability for photovoltaic (PV) module packaging applications. Relevant properties, including interfacial adhesion and moisture transport, have been measured as a function of damp-heat (85 degrees C / 85% relative humidity) exposure. Based on these tests, promising new encapsulants with improved properties have been identified. Backsheets prepared by industry and at NREL have been found to provide varying levels of moisture ingress protection. To achieve significantly improved products, further development of these candidates is ongoing. The relative effectiveness of various packaging strategies to protect PV devices has also been investigated. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Jorgensen, GJ (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 1 TC 4 Z9 4 U1 0 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 499 EP 502 DI 10.1109/PVSC.2005.1488179 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400122 ER PT S AU Kempe, MD AF Kempe, MD GP IEEE TI Control of moisture ingress into photovoltaic modules SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE AB During long-term exposure of photovoltaic modules to environmental stress, the ingress of water into the module is correlated with decreased performance. By using diffusivity measurements for water through encapsulants such as ethylene vinyl acetate (EVA), we have modeled moisture ingress using a finite-element analysis with atmospheric data from various locations such as Miami, Florida. This analysis shows that because of the high diffusivity of EVA, even an impermeable glass back-sheet alone is incapable of preventing significant moisture ingress from the edges for a 20-year lifecycle. This result has led us to investigate ways to protect module from the moisture through the use of different encapsulating chemistries and materials. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Kempe, MD (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. NR 4 TC 7 Z9 7 U1 1 U2 4 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 503 EP 506 DI 10.1109/PVSC.2005.1488180 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400123 ER PT S AU del Cueto, JA Rummel, SR AF del Cueto, JA Rummel, SR GP IEEE TI Comparison of diode quality plus other factors in polycrystalline cells and modules from outdoor and indoor measurements SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE AB The Outdoor Test Facility (OTF) at NREL is equipped with data acquisition systems that monitor the performance of modules deployed outdoors in real time, including the measurement of current-voltage traces every 15 minutes during all daylight hours. This affords us the ability to analyze performance across many levels of illumination which allows the determination of factors that affect module performance and that serve as indicators of module quality, including average diode quality factors, series resistances values, and reverse-saturation currents of the cells. This study focuses on several polycrystalline thin-film modules, including cadmium telluride. CIS, and polycrystalline silicon. We present these parameters, acquired from outdoor measurements, and compare the results with measurements obtained from more canonical methods. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP del Cueto, JA (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. NR 4 TC 1 Z9 1 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 511 EP 514 DI 10.1109/PVSC.2005.1488182 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400125 ER PT S AU Wanlass, MW Ahrenkiel, SP Ahrenkiel, RK Albin, DS Carapella, JJ Duda, A Geisz, JF Kurtz, S Moriarty, T Wehrer, WJ Wernsman, B AF Wanlass, MW Ahrenkiel, SP Ahrenkiel, RK Albin, DS Carapella, JJ Duda, A Geisz, JF Kurtz, S Moriarty, T Wehrer, WJ Wernsman, B GP IEEE TI Lattice-mismatched approaches for high-performance, III-V photovoltaic energy converters SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE ID BANDGAP; INP AB We discuss lattice-mismatched (LMM) approaches utilizing compositionally step-graded layers and buffer layers that yield III-V photovoltaic devices with performance parameters equaling those of similar lattice-matched (LM) devices. Our progress in developing high-performance, LMM, InP-based GaInAs/InAsP materials and devices for thermophotovoltaic (TPV) energy conversion is highlighted. A novel, monolithic, multi-bandgap, tandem device for solar PV (SPV) conversion involving LMM materials is also presented along with promising preliminary performance results. C1 Natl Renewable Energy Lab, Golden, CO USA. RP Wanlass, MW (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO USA. NR 13 TC 18 Z9 18 U1 2 U2 7 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 530 EP 535 DI 10.1109/PVSC.2005.1488186 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400129 ER PT S AU Kurtz, S Johnston, SW Geisz, JF Friedman, DJ Ptak, AJ AF Kurtz, S Johnston, SW Geisz, JF Friedman, DJ Ptak, AJ GP IEEE TI Effect of nitrogen concentration on the performance of Ga1-xInxNyAs1-y solar cells SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE ID INGAASN; GAAS AB A study of Ga1-xInxAs1-y solar cells shows that nitrogen degrades the solar cells even for very small nitrogen concentrations. By comparing the properties of p-on-n and n-on-p Ga(1-x)In(x)NyAs(1-y) cells as a function of y, we find that the n-on-p cells show a more abrupt decrease in the open-circuit voltage and greater decrease of the photocurrent. The asymmetry in the performance of the cells reflects the differences observed for electrons and holes in Ga1-xInxNyAs1-y. The electron mobility is degraded much more than the hole mobility when nitrogen is added to GaAs, implying that the electron diffusion length should be degraded more than the hole diffusion length. An electron trap (observed by deep-level transient spectroscopy) affects p-type GaNyAs1-y more than n-type GaNyAs1-y, consistent with the observation that the open-circuit voltage of n-on-p cells decreases more than that of p-on-n cells. The effect of nitrogen on GaNAs cells is shown to be much greater than expected for an isoelectronic impurity. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Kurtz, S (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. NR 20 TC 2 Z9 2 U1 0 U2 5 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 595 EP 598 DI 10.1109/PVSC.2005.1488201 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400144 ER PT S AU Johnston, SW Kurtz, S Friedman, DJ Ptak, AJ Ahrenkiel, RK Crandall, RS AF Johnston, SW Kurtz, S Friedman, DJ Ptak, AJ Ahrenkiel, RK Crandall, RS GP IEEE TI Electron traps in P-type GaAsN characterized by deep-level transient spectroscopy SO CONFERENCE RECORD OF THE THIRTY-FIRST IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE - 2005 SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE ID SOLAR-CELLS; HETEROSTRUCTURES; DEFECTS; GAINNAS; INGAASN; DIODES AB We have used deep level transient spectroscopy to detect traps in p-type GaAsN grown by metal-organic chemical vapor deposition. Although minority-carrier electrons are not intentionally injected into the depletion region of the measured samples, electron traps are detected in both Schottky barrier and p-n junction devices. The electron-trap signal can exist using only reverse biases during measurement, and checks of series resistance and minority-carrier injection using an optical source also confirm the electron-trap signal. For dilute-nitrogen p-n junction samples, the electron trap gives the dominant signal peak. The peak's magnitude, which corresponds to trap density, correlates to amounts of nitrogen incorporated during growth and reduced open-circuit voltage during light-characterization. The p-type GaAsN layers have net acceptor carrier concentrations in the mid-10(16) to low 10(-17) cm(-3), as determined by capacitance voltage profiling. The electron-trap concentration is dependent on the N content, but values when traps are filled to saturation, range from 10(15) to 10(16) cm(-3). The electron signal peak shows a shoulder peak on some samples, giving another close energy level. The electron-trap activation energy is somewhat dependent on the trap filling time, but ranges from about 0.15 to 0.30 eV, and is usually near 0.2 eV for the largest peak when filled to saturation. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. NR 16 TC 0 Z9 0 U1 0 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 599 EP 602 DI 10.1109/PVSC.2005.1488202 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400145 ER PT S AU Ptak, AJ Friedman, DJ Kurtz, S Kiehl, J AF Ptak, AJ Friedman, DJ Kurtz, S Kiehl, J GP IEEE TI Enhanced-depletion-width GaInNAs solar cells grown by molecular-beam epitaxy SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE ID VACANCIES; NITROGEN AB GaInNAs, potentially useful in a 4-junction GaInP2/GaAs/GaInNAs/Ge solar cell, suffers from very low minority-carrier collection lengths. To date, the currents available from GaInNAs solar cells are not high enough to increase the efficiency of a 3-junction device by adding this fourth junction. Here, we grow p-i-n GaInNAs solar cells by MBE with wide, intrinsic base layers and internal QE's near 1.0. If similar 1.0-eV GaInNAs junctions can be successfully integrated into the 3-junction structure, the resulting 4-junction cell would have a higher efficiency. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Ptak, AJ (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 12 TC 3 Z9 4 U1 0 U2 6 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 603 EP 606 DI 10.1109/PVSC.2005.1488203 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400146 ER PT S AU Friedman, DJ Ptak, AJ Kurtz, R Geisz, JF AF Friedman, DJ Ptak, AJ Kurtz, R Geisz, JF GP IEEE TI Analysis of depletion-region collection in GaInNAs solar cells SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE AB We provide qualitative insight into depletion-region collection in GaInNAs cells to (1) understand the effect of diffusion length L on the QE; and (2) describe the magnitude of L required to get adequate current from the cell. We use Wolfs equations for the QE including a drift field E, and model E as being equal to the junction built-in voltage distributed uniformly across the depletion region. This allows us to calculate the QE as a function of L and depletion width WD. We show that if L is sufficiently small, increasing WD can actually decrease the QE. To determine how long L needs to be in a practical GaInNAs junction, we calculate from the QE the short-circuit current density as a function Of WD and L. This allows us to estimate that L-ambipolar needs to be greater than roughly 1 pm in order to obtain enough photocurrent for the 4-junction application, giving guidance to the experimental effort to develop such cells. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Friedman, DJ (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 9 TC 1 Z9 1 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 691 EP 694 DI 10.1109/PVSC.2005.1488225 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400168 ER PT S AU Geisz, JF Olson, JM Friedman, DJ Jones, KM Reedy, RC Romero, MJ AF Geisz, JF Olson, JM Friedman, DJ Jones, KM Reedy, RC Romero, MJ GP IEEE TI Lattice-matched GaNPAs-on-silicon tandem solar cells SO CONFERENCE RECORD OF THE THIRTY-FIRST IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE - 2005 SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE ID ALLOYS; GAAS; SI AB A two-junction device consisting of a 1.7-eV GaNPAS junction on a 1.1-eV silicon junction has the theoretical potential to achieve nearly optimal efficiency for a two-junction tandem cell. We have demonstrated a monolithic III-V-on-silicon tandem solar cell in which most of the lll-V layers are nearly lattice-matched to the silicon substrate. The cell includes a 1.8 eV GaNPAs top cell, a GaP-based tunnel junction (TJ), and a diffused silicon junction formed during the epitaxial growth of GaNP on the silicon substrate. This tandem on silicon has a V-oc of 1.53 V and an AM1.5G efficiency of 5.2% without any antirefiection coating. Low currents in the top cell are the primary limitation to higher efficiency at this point. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 11 TC 8 Z9 8 U1 0 U2 5 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 695 EP 698 DI 10.1109/PVSC.2005.1488226 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400169 ER PT S AU Kurtz, S Geisz, JF Friedman, DJ Ptak, AJ King, RR Law, DC Karam, NH AF Kurtz, S Geisz, JF Friedman, DJ Ptak, AJ King, RR Law, DC Karam, NH GP IEEE TI Collection of photocarriers in Ga(1-x)In(x)NyAs(1-y) solar cells SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE ID DEEP LEVELS; INGAASN; GAINNAS; GAAS AB Collection of photocarriers in Ga1-xInxNyAs1-y solar cells is limited by the poor quality of the Ga(1-x)ln(x)N(y)As(1-y) Some reports have shown collection of photocarrier, outside of the depleted layer in annealed Ga1-xInxNyAs1-y, but the key to achieving the higher collection has been unclear. In this paper, we attempt to quantify the diffusion and collection lengths that contribute to the photocurrent in Ga1-xInxNyAs1-y solar cells. The data imply that the effective mu tau product for the lightly doped Ga(1-x)ln(x)N(y)As(1-y) material may vary when a field is applied. We conclude that the fields present in most of our best Ga(1-x)ln(x)N(y)AS(1-y) cells are large enough to aid collection of photocarriers. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Kurtz, S (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. NR 14 TC 0 Z9 0 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 707 EP 710 DI 10.1109/PVSC.2005.1488229 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400172 ER PT S AU McMahon, WE Emery, KE Friedman, DJ Ottoson, L Young, MS Ward, JS Kramer, CM Duda, A Kurtz, S AF McMahon, WE Emery, KE Friedman, DJ Ottoson, L Young, MS Ward, JS Kramer, CM Duda, A Kurtz, S GP IEEE TI An on-sun comparison of GaInP2/GaAs tandem cells with top cell thickness varied SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE AB This study compares the on-sun performance of a set of GaInP2/GaAs tandem cells with different GaInP2 top-cell thicknesses. Because high-efficiency III-V cells are best suited to concentrating photovoltaic (CPV) applications, the cells were mounted on a two-axis tracker with the incident sunlight collimated to exclude all except the direct beam. Current-voltage (I-V) curves were taken throughout the course of several days, along with measurements of the direct solar spectrum. Our two major conclusions are: (1) GalnP(2)/GaAs tandem cells designed for an "air mass 1.5 global" (AM 1.5G) or a "low aerosol optical depth" (Low AOD) spectrum perform the best, and (2) cells can be characterized indoors and modeled using outdoor spectra to predict the correct result. These results are equally valid for GalnP(2)/GaAs/Ge triple-junction cells. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP McMahon, WE (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. NR 6 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 715 EP 718 DI 10.1109/PVSC.2005.1488231 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400174 ER PT S AU Ahrenkiel, RK Metzger, WK Page, M Reedy, R Luther, J Dashdorj, J AF Ahrenkiel, RK Metzger, WK Page, M Reedy, R Luther, J Dashdorj, J GP IEEE TI Relationship of recombination lifetime to dark current in silicon p-n junctions SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE ID CIRCUIT VOLTAGE-DECAY; SOLAR-CELLS AB Measurement of recombination and minority-carrier lifetimes has become a central activity in photovoltaic technology. The primary measurement techniques for silicon technologies are based on photoconductive decay (PCD) and microwave reflectance (mPCD). The measurement of the correct recombination lifetime depends on the carriers being confined to a given spatial region of a diagnostic structure. The electric field of the PN junction separates the charges, and the measured decay time does not represent the real minority-carrier lifetime. In these cases, the measured quantity is a function of the true lifetime and the sample structure. Here, we examine these effects, both experimentally and theoretically, for the n(+)-p device structure common to terrestrial photovoltaics. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Ahrenkiel, RK (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 10 TC 0 Z9 0 U1 1 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 895 EP 898 DI 10.1109/PVSC.2005.1488275 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400218 ER PT S AU Sopori, B Amieva, J Butterfield, B Li, C AF Sopori, B Amieva, J Butterfield, B Li, C GP IEEE TI Rapid mapping of AR coating thickness on Si solar cells using GT-FabScan 6000 SO CONFERENCE RECORD OF THE THIRTY-FIRST IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE - 2005 SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE AB A new technique for rapid mapping of the thickness' of an antireflection (AR) coating on a solar cell is described. A filtered, reflectance (intensity) image of the AR-coated wafer is generated by a CCD camera mounted on a GTFabScan. This image is converted into a thickness image using a transformation relating local AR thickness to the local intensity in the image plane. The thickness map is generated in < 100 ms. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 3 TC 1 Z9 1 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 943 EP 946 DI 10.1109/PVSC.2005.1488287 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400230 ER PT S AU Wang, TH Iwaniczko, E Page, MR Levi, DH Yan, Y Yelundur, V Branz, HM Rohatgi, A Wang, Q AF Wang, TH Iwaniczko, E Page, MR Levi, DH Yan, Y Yelundur, V Branz, HM Rohatgi, A Wang, Q GP IEEE TI Effective interfaces in silicon heterojunction solar cells SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE AB Thin hydrogenated amorphous silicon (a-Si:H) layers deposited by hot-wire chemical vapor deposition (HWCVD) are investigated for use in silicon heterojunction (SHJ) solar cells on p-type crystalline silicon wafers. A requirement for excellent emitter quality is minimization of interface recombination. Best results necessitate immediate a-Si:H deposition and an abrupt and flat interface to the c-Si substrate. We obtain a record planar HJ efficiency of 16.9% with a high V., of 652 mV on p-type float-zone (FZ) silicon substrates with HWCVD a-Si:H(n) emitters and screen-printed Al-BSF contacts. H pretreatment by HWCVD is beneficial when limited to a very short period prior to emitter deposition. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Wang, TH (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. NR 6 TC 9 Z9 9 U1 0 U2 5 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 955 EP 958 DI 10.1109/PVSC.2005.1488290 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400233 ER PT S AU Buonassisi, T Istratov, AA Marcus, MA Peters, S Ballif, C Heuer, M Ciszek, TF Cai, Z Lai, B Schindler, R Weber, ER AF Buonassisi, T Istratov, AA Marcus, MA Peters, S Ballif, C Heuer, M Ciszek, TF Cai, Z Lai, B Schindler, R Weber, ER GP IEEE TI Synchrotron-based investigations into metallic impurity distribution and defect engineering in multicrystalline silicon via thermal treatments SO CONFERENCE RECORD OF THE THIRTY-FIRST IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE - 2005 SE IEEE Photovoltaic Specialists Conference LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE ID SOLAR-CELLS AB Synchrotron-based microprobe investigations were conducted to study the effect of heat treatments and cooling rates on the distribution and chemical state of metal-rich precipitates in multicrystalline silicon. A brief summary of these results is presented herein; complete reports will be published elsewhere. The effect of temperature on the dissolution of metal-silicide precipitates during rapid thermal processing has been investigated, revealing that higher temperatures can lead to the dissolution of metal silicide precipitates correlated with decreases in cell performance. The effect of modifying cooling rates on the distributions of metals has also been investigated, indicating that while fast cools lead to widespread nucleation, slow cools can lead to the formation of significantly larger clusters and decreased intragranular recombination activity. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RI Ballif, Christophe/G-4621-2012 NR 4 TC 0 Z9 1 U1 1 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 1027 EP 1030 DI 10.1109/PVSC.2005.1488308 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400251 ER PT S AU Sopori, B Zhang, Y Reedy, R Jones, K Yan, YF Al-Jassim, M Bathey, B Kalejs, J AF Sopori, B Zhang, Y Reedy, R Jones, K Yan, YF Al-Jassim, M Bathey, B Kalejs, J GP IEEE TI A comprehensive model of hydrogen transport into a solar cell during silicon nitride processing for fire-through metallization SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE ID DIFFUSION AB A mechanism for the transport of H into a Si solar cell during plasma-enhanced chemical vapor deposition (PECVD) of a hydrogenated silicon nitride (SiN:H) layer and its subsequent fire-through metallization process is described. The PECVD process generates process-induced traps, which "store" H at the surface of the solar cell. This stored H is released and diffuses rapidly into the bulk of Si during the high-temperature metallization-firing process. During the ramp-down, the diffused H associates with impurities and defects and passivates them. The firing step partially heals up the surface damage. The proposed model explains a variety of observations and experimental results. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Sopori, B (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. NR 14 TC 1 Z9 1 U1 0 U2 5 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 1039 EP 1042 DI 10.1109/PVSC.2005.1488311 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400254 ER PT S AU Qi, W Matt, P Yan, YF Wang, TH AF Qi, W Matt, P Yan, YF Wang, TH GP IEEE TI High-throughput approaches to optimization of crystal silicon surface passivation and heterojunction solar cells SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE AB We use a high-throughput (combinatorial) hot-wire chemical vapor deposition system to passivate the crystal silicon surface and to grow heterojunction silicon solar cells. We study the effectiveness of crystal surface treatments by atomic H or/and NHx radicals, followed by the growth of thin hydrogenated amorphous silicon (a-Si:H) films. Treatment and layer properties such as times, thicknesses and gas mixtures can be continuously graded, creating a two-dimensional sample with each variable varying in one direction. This results in high-throughput optimization of the processes. Effective carrier lifetime is measured by photoconductive decay to evaluate the effectiveness of the surface passivation by surface treatments. The effective carrier lifetime increases from about 5 mu s without passivation to about 24 mu s with an optimized surface treatment and thickness a-Si:H on single-sided c-Si. Transmission electron microscopy reveals that a-Si:H, a mixed phase, or epitaxial growth of thin-film Si depending upon the surface treatment. Improvement in effective carrier lifetime correlates to with an immediate a-Si:H growth on c-Si, rather than a mixed phase and epitaxial Si growth. We have obtained an efficiency of 13.4% on a non-textured single-sided heterojunction solar cell on a p-type CZ-Si processed with optimized surface treatment. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Qi, W (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. NR 8 TC 0 Z9 0 U1 0 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 1233 EP 1236 DI 10.1109/PVSC.2005.1488362 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400304 ER PT S AU Kaydanova, T van Hest, MFAM Miedaner, A Curtis, CJ Alleman, JL Dabney, MS Garnett, E Shaheen, S Smith, L Collins, R Hanoka, JI Gabor, AM Ginley, DS AF Kaydanova, T van Hest, MFAM Miedaner, A Curtis, CJ Alleman, JL Dabney, MS Garnett, E Shaheen, S Smith, L Collins, R Hanoka, JI Gabor, AM Ginley, DS GP IEEE TI Direct write contacts for solar cells SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE ID SOLVENTS AB Ag, Cu and Ni metallizations were inkjet printed with near vacuum deposition quality. The approach developed can be easily extended to other conductors such as Pt, Pd, Au etc. Thick highly conducting lines of Ag and Cu demonstrating good adhesion to glass, Si and PCB have been printed at 100-200 degrees C in air and N-2 respectively. Ag grids were inkjet-printed on Si solar cells and fired through the silicon nitride AR layer at 850 degrees C resulting in 8% cells. Next generation multicomponent inks (including etching agents) have also been developed with improved fire through contacts leading to higher cell efficiencies. PEDOT-PSS polymer based conductors were inkjet printed with conductivity as good or better than that of spin-coated films. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Kaydanova, T (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. RI Shaheen, Sean/M-7893-2013; Garnett, Erik/A-6847-2009; Collins, Reuben/O-2545-2014 OI Garnett, Erik/0000-0002-9158-8326; Collins, Reuben/0000-0001-7910-3819 NR 5 TC 5 Z9 7 U1 0 U2 7 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 1305 EP 1308 DI 10.1109/PVSC.2005.1488380 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400322 ER PT S AU Osterwald, CR Pruett, J Moriarty, T AF Osterwald, CR Pruett, J Moriarty, T GP IEEE TI Crystalline silicon short-circuit current degradation study: Initial results SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE ID SOLAR-CELLS AB Following our observation of slow degradation of short-circuit current (I-SC) in crystalline silicon (x-Si) modules that was correlated with ultraviolet (UV) exposure dose, we initiated a new study of individual x-Si cells designed to determine the degradation cause. In this paper, we report the initial results of this study, which has accumulated 1056 MJ/m(2) of UV dose from I-sun metal-halide irradiance, equivalent to 3.8 years at our test site. At this time, the control samples are unchanged, the unencapsulated samples have lost about 2% of 6, and the samples encapsulated in module-style packages have declined from 1% to 3%, depending on cell technology. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Osterwald, CR (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 6 TC 4 Z9 4 U1 1 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 1335 EP 1338 DI 10.1109/PVSC.2005.1488388 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400330 ER PT S AU Pern, FJ Panosyan, Z Gippius, AA Kontsevoy, JA Touryan, K Voskanyan, S Yengibaryan, Y AF Pern, FJ Panosyan, Z Gippius, AA Kontsevoy, JA Touryan, K Voskanyan, S Yengibaryan, Y GP IEEE TI Diamond-like carbon coatings as encapsulants for photovoltaic solar cells SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE ID FILM AB High-quality single layer and bilayer diamond-like carbon (DLC) thin films are fabricated by two technologies, namely, ion-assisted plasma-enhanced deposition (IAPED) and electron cyclotron resonance (ECR) deposition. Deposition on various substrates such as sapphires and solar cells has been performed at low substrate temperatures (50 degrees similar to 80 degrees C). The two deposition technologies allow good control over the growth conditions to produce DLC films with desired optical properties, thickness, and energy bandgap. The bilayer structured DLC can be fabricated by using IAPED for the bottom layer followed by ECR for the top layer, or just by IAPED for both layers with different compositions. The DLC films have shown good spatial uniformity, density, microhardness, and adhesion strength. They exhibit excellent stability against attack by strong acids, prolonged damp-heat exposure at 85 degrees C and 85% relative humidity, mechanical scratch, ultrasonication, and irradiation by ultraviolet (UV), protons, and electrons. When deposited on crystalline Si and GaAs solar cells in single layer and/or bilayer structure, the DLC films not only serve as antireflection coating and protective encapsulant, but also improve the cell efficiencies. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Pern, FJ (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. NR 8 TC 0 Z9 0 U1 3 U2 5 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 1339 EP 1342 DI 10.1109/PVSC.2005.1488389 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400331 ER PT S AU Mahan, AH Xu, Y Gedvilas, LM Reedy, RC Williamson, DL Datta, S Cohen, JD Yan, B Branz, HM AF Mahan, AH Xu, Y Gedvilas, LM Reedy, RC Williamson, DL Datta, S Cohen, JD Yan, B Branz, HM GP IEEE TI a-SiGe : H materials and devices deposited by hot wire CVD using a tantalum filament operated at low temperature SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE ID AMORPHOUS-SILICON; ALLOYS; GAP; HWCVD AB We report the deposition of improved hydrogenated amorphous silicon germanium (a-SiGe:H) films by the Hot Wire CVD (HWCVD) technique using a tantalum filament operating at a low temperature. We gauge the material quality of the aSiGe:H films by comparing infrared, small angle x-ray scattering (SAXS), photocapacitance and conductivity measurements to earlier results, and fabricate single junction n-i-p solar cell devices using these i-layers. C1 NREL, Golden, CO 80401 USA. RP Mahan, AH (reprint author), NREL, 1617 Cole Blvd, Golden, CO 80401 USA. NR 21 TC 0 Z9 0 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 1397 EP 1400 DI 10.1109/PVSC.2005.1488401 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400343 ER PT S AU Moutinho, HR Jiang, CS Xu, Y To, B Jones, KM Teplin, CW Al-Jassim, MM AF Moutinho, HR Jiang, CS Xu, Y To, B Jones, KM Teplin, CW Al-Jassim, MM GP IEEE TI Mechanisms of growth of nanocrystalline silicon deposited by hot-wire chemical vapor deposition SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE ID THIN-FILMS AB We have studied the growth of silicon thin films by hot-wire chemical vapor deposition under different conditions of filament temperature (T-f) and hydrogen dilution ratio (R). We found that these two parameters have a similar effect on the properties of the deposited films and show how they interact to control the growth dynamics. For relatively low values of T-f and/or R, the films are amorphous. An increase in the value of these parameters results in the appearance of a new phase, characterized by heavily faulted (220)-oriented columnar grains; for even higher values, a randomly oriented nanocrystalline phase appears. In general, there is more than one phase present in the film, and the microstructure varies as we go from the bottom to the top of the film. Although T-f and R have similar effects on the physical properties, they affect the deposition rate in a different way. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Moutinho, HR (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 9 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 1496 EP 1499 DI 10.1109/PVSC.2005.1488426 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400368 ER PT S AU Marion, B Adelstein, J Boyle, K Hayden, H Hammond, B Fletcher, T Canada, B Narang, D Kimber, A Mitchell, L Rich, G Townsend, T AF Marion, B Adelstein, J Boyle, K Hayden, H Hammond, B Fletcher, T Canada, B Narang, D Kimber, A Mitchell, L Rich, G Townsend, T GP IEEE TI Performance parameters for grid-connected PV systems SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE AB The use of appropriate performance parameters facilitates the comparison of grid-connected photovoltaic (PV) systems that may differ with respect to design, technology, or geographic location. Four performance parameters that define the overall system performance with respect to the energy production, solar resource, and overall effect of system losses are the following: final PV system yield, reference yield, performance ratio, and PVUSA rating. These performance parameters are discussed for their suitability in providing desired information for PV system design and performance evaluation and are demonstrated for a variety of technologies, designs, and geographic locations. Also discussed are methodologies for determining system a.c. power ratings in the design phase using multipliers developed from measured performance parameters. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Marion, B (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. NR 11 TC 31 Z9 31 U1 0 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 1601 EP 1606 DI 10.1109/PVSC.2005.1488451 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400393 ER PT S AU Adelstein, J Sekulic, B AF Adelstein, J Sekulic, B GP IEEE TI Performance and reliability of a 1-kW amorphous silicon photovoltaic roofing system SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE AB The National Renewable Energy Laboratory (NREL) has been monitoring the performance of a 1-kW(AC) United Solar Systems Corporation (USSC) roofing system over the 6-year period from October 1998 to September 2004. This paper will investigate the performance and reliability of this system. The annual degradation and seasonal fluctuation of the system's power output are calculated using the PVUSA power rating regression model. The system performance is also examined using the additional performance parameters of yield, reference yield, and performance ratio, which allows for a somewhat less complicated data collection and analysis. The data indicate that the system has exhibited stable performance over time, with an overall degradation rate comparable to that found in crystalline silicon systems. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Adelstein, J (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. NR 5 TC 8 Z9 8 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 1627 EP 1630 DI 10.1109/PVSC.2005.1488457 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400399 ER PT S AU Fthenakis, VM Alsema, EA de Wild-Scholten, MJ AF Fthenakis, VM Alsema, EA de Wild-Scholten, MJ GP IEEE TI Life cycle assessment of photovoltaics: Perceptions, needs, and challenges SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE ID ENERGY; MODULE; TIME AB High impact publications recently depicted PV technologies as having higher external environmental costs than those of nuclear energy and natural-gas-fueled power plants. These assessments are based on old data and unbalanced assumptions, and they illustrate the need for LCA data describing the continuously improving photovoltaic systems and the inclusion of social benefits in this comparison. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Fthenakis, VM (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. OI Alsema, Erik/0000-0002-0502-0591 NR 23 TC 2 Z9 2 U1 0 U2 9 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 1655 EP 1658 DI 10.1109/PVSC.2005.1488464 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400406 ER PT S AU Brown, KE Mitchell, RL Bower, WI King, R AF Brown, KE Mitchell, RL Bower, WI King, R GP IEEE TI PV Manufacturing R&D Project status & accomplishments under "in-line diagnostics & intelligent processing" SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE AB In 1991, the U.S. Department of Energy (DOE), National Renewable Energy Laboratory, and Sandia National Laboratories embarked on a research partnership with the U.S. photovoltaic (PV) industry by cost-sharing industry-based R&D efforts.(1) The PV Manufacturing R&D (PVMR&D) Project, an extension of the earlier PV Manufacturing Technology (PVMaT) Project, aims at streamlining and improving the current PV manufacturing technology to enable U.S. manufacturers to compete in the global marketplace. Currently, PVMR&D has ten active subcontracts with manufacturers working in several facets of the U.S. PV industry; four subcontracts were completed within the past year. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Brown, KE (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 13 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 1671 EP 1674 DI 10.1109/PVSC.2005.1488468 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400410 ER PT S AU Wassmer, MR Warner, CL AF Wassmer, MR Warner, CL GP IEEE TI Building-energy simulation and monitoring research activities for solar decathlon houses SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE AB The Solar Decathlon is a college-level student competition to design, construct, and operate approximately 800-ft(2) homes that are highly energy efficient and use solar thermal and photovoltaic technologies to meet all household energy needs. In fall 2005, 19 teams will compete for about one week in ten contests, six of which test energy usage and production. The competition will take place on the National Mall in Washington, D.C., and will be open to the public. A comprehensive building-energy simulation and monitoring project developed for Solar Decathlon homes is outlined in this paper. Simulation, monitoring, and analysis activities will be conducted before, during, and after the competition in five phases. The level of detail of monitoring activities progressively increases in each phase. The level of detail of the simulations remains consistent throughout, but the simulation accuracy is expected to improve as more detailed monitoring data become available for model calibration. The results of the various phases of the project are expected to be of interest to five diverse groups: visitors to the Solar Decathlon, competition organizers, current Solar Decathlon teams, future Solar Decathlon teams, and building scientists. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Wassmer, MR (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. NR 3 TC 0 Z9 0 U1 1 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 1714 EP 1717 DI 10.1109/PVSC.2005.1488479 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400421 ER PT S AU Emery, K Anderberg, A Kiehl, J Mack, C Moriarty, T Ottoson, L Rummel, S AF Emery, K Anderberg, A Kiehl, J Mack, C Moriarty, T Ottoson, L Rummel, S GP IEEE TI Trust but verify: Procedures to achieve accurate efficiency measurements for all photovoltaic technologies SO Conference Record of the Thirty-First IEEE Photovoltaic Specialists Conference - 2005 SE IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE LA English DT Proceedings Paper CT 31st IEEE Photovoltaic Specialists Conference CY JAN 03-07, 2005 CL Lake Buena Vista, FL SP IEEE Electron Devices Soc, IEEE AB The measurement of the photovoltaic (PV) performance with respect to reference conditions requires measuring the performance with respect to a given tabular reference spectrum, junction temperature, and total irradiance. This paper discusses the procedures implemented by NREL's PV Cell and Module Performance Characterization Group to achieve the lowest practical uncertainty. This paper describes the process of trusting and verifying software, hardware, calibrations, procedures, and results. As an ISO 17025 accredited calibration facility, the quality system that is in place is designed to assure customers that the results are valid within specified uncertainty limits and are traceable. The process of trusting performance claims but desiring an independent verification permeates the PV business and society. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Emery, K (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. NR 17 TC 0 Z9 0 U1 1 U2 4 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0160-8371 BN 0-7803-8707-4 J9 IEEE PHOT SPEC CONF PY 2005 BP 1781 EP 1784 DI 10.1109/PVSC.2005.1488496 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic; Physics, Applied SC Energy & Fuels; Engineering; Physics GA BCM81 UT WOS:000230047400438 ER PT J AU Gregori, G Hansen, SB Clarke, R Heathcote, R Key, MH King, J Klein, RI Izumi, N Mackinnon, AJ Moon, SJ Park, HS Pasley, J Patel, N Patel, PK Remington, BA Ryutov, DD Shepherd, R Snavely, RA Wilks, SC Zhang, BB Glenzer, SH AF Gregori, G Hansen, SB Clarke, R Heathcote, R Key, MH King, J Klein, RI Izumi, N Mackinnon, AJ Moon, SJ Park, HS Pasley, J Patel, N Patel, PK Remington, BA Ryutov, DD Shepherd, R Snavely, RA Wilks, SC Zhang, BB Glenzer, SH TI Experimental characterization of a strongly coupled solid density plasma generated in a short-pulse laser target interaction SO CONTRIBUTIONS TO PLASMA PHYSICS LA English DT Article DE copper plasma; strongly coupled plasma; plasma spectroscopy ID HIGH-CONTRAST; HOT; SCATTERING AB We have measured high resolution copper K alpha spectra from a picosecond high intensity laser produced plasma. By fitting the shape of the experimental spectra with a self-consistent-field model which includes all the relevant line shifts from multiply ionized atoms, we are able to infer time and spatially averaged electron temperatures (T-e) and ionization state (Z) in the foil. Our results show increasing values for T-e and Z when the overall mass of the target is reduced. In particular, we measure temperatures in excess of 200 eV with Z similar to 13-14. For these conditions the ion-ion coupling constant is Gamma(ii) similar to 8-9, thus suggesting the achievement of a strongly coupled plasma regime. (c) 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England. Univ Calif Davis, Dept Appl Sci, Davis, CA 95616 USA. Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. Gen Atom Co, San Diego, CA 92121 USA. RP Gregori, G (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA. EM gregori1@llnl.gov RI Patel, Pravesh/E-1400-2011; MacKinnon, Andrew/P-7239-2014; IZUMI, Nobuhiko/J-8487-2016; Brennan, Patricia/N-3922-2015 OI MacKinnon, Andrew/0000-0002-4380-2906; IZUMI, Nobuhiko/0000-0003-1114-597X; NR 35 TC 51 Z9 51 U1 3 U2 10 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 0863-1042 J9 CONTRIB PLASM PHYS JI Contrib. Plasma Phys. PY 2005 VL 45 IS 3-4 BP 284 EP 292 DI 10.1002/ctpp.200510032 PG 9 WC Physics, Fluids & Plasmas SC Physics GA 943UL UT WOS:000230380000018 ER PT J AU Desjarlais, MP AF Desjarlais, MP TI Density functional calculations of the reflectivity of shocked xenon with ionization based gap corrections SO CONTRIBUTIONS TO PLASMA PHYSICS LA English DT Article DE dense plasmas; plasma reflectivity; xenon; density functional theory; molecular dynamics ID TOTAL-ENERGY CALCULATIONS; AUGMENTED-WAVE METHOD; MOLECULAR-DYNAMICS; BASIS-SET; METALS; PLASMA AB Experimental results [1] for the reflection coefficient of shock compressed xenon are compared with results from quantum molecular dynamics calculations with density functional theory (DFT). The real part of the optical conductivity is calculated within the Kubo-Greenwood formalism and the Kramers-Kronig relations are used to generate the reflectivity and other optical properties. Improved agreement over non-ideal plasma theory [2] is found with the DFT calculations, but significant differences with the data remain. Since DFT in the various local density approximations tends to underestimate the band gap and overestimate the free electron population, we have used the ionizations from [2] to correct the DFT band gaps. This results in much improved agreement with the xenon reflectivity data and demonstrates a new approach to correcting DFT band gaps. (c) 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim C1 Sandia Natl Labs, Pulsed Power Sci Ctr, Albuquerque, NM 87185 USA. RP Desjarlais, MP (reprint author), Sandia Natl Labs, Pulsed Power Sci Ctr, POB 5800, Albuquerque, NM 87185 USA. EM mpdesja@sandia.gov NR 18 TC 18 Z9 18 U1 0 U2 2 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY SN 0863-1042 J9 CONTRIB PLASM PHYS JI Contrib. Plasma Phys. PY 2005 VL 45 IS 3-4 BP 300 EP 304 DI 10.1002/cttp.200510034 PG 5 WC Physics, Fluids & Plasmas SC Physics GA 943UL UT WOS:000230380000020 ER PT J AU Funk, T Deb, A George, SJ Wang, HX Cramer, SP AF Funk, T Deb, A George, SJ Wang, HX Cramer, SP TI X-ray magnetic circular dichroism - a high energy probe of magnetic properties SO COORDINATION CHEMISTRY REVIEWS LA English DT Review DE X-ray magnetic circular dichroism; circular dichroism; magnetization; absorption-fine-structure; spin sum-rule; branching ratio; ground-state; crystal-field; dipole term; spectroscopy; spectra; transition-metal compounds; metalloproteins; metalloenzymes ID TRANSITION-METAL COMPOUNDS; HIGH-RESOLUTION SPECTROSCOPY; ABSORPTION-FINE-STRUCTURE; BLUE COPPER SITE; SPIN SUM-RULE; GROUND-STATE; FERROMAGNETIC NICKEL; BRANCHING RATIO; PSEUDOMONAS-AERUGINOSA; SYNCHROTRON-RADIATION AB X-ray magnetic circular dichroism (XMCD) spectroscopy is a powerful emerging technique that measures difference in absorption of left- and right-circularly polarized X-rays by a magnetized sample, often at cryogenic temperatures. It is already well established in magnetic materials science, and it is likely to become a significant tool for the inorganic and bioinorganic communities. As with all X-ray spectroscopies, XMCD has the advantage of being element specific. Interpretation of the spectra can: provide quantitative information about the distribution of spin and orbital angular momenta from simple "sum rules"; determine spin orientations from the sign of the XMCD signal; infer spin states from magnetization curves; and separate magnetic and non-magnetic components in heterogeneous samples. With new synchrotron radiation sources and improved end stations, XMCD measurements on dilute samples such as metals in enzymes, are becoming more routine. This review first details the technology currently available for XMCD measurements and outlines the theory underlying interpretation of the spectra. It then illustrates the strengths of the XMCD technique using examples taken from bioinorganic chemistry and materials science. In this way, we aim to encourage chemists, materials scientists, and biologists to consider XMCD spectroscopy as an approach to understanding the electronic and magnetic structure of their samples. (C) 2004 Elsevier B.V. All rights reserved. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. Univ Calif Davis, Dept Appl Sci, Davis, CA 95616 USA. RP George, SJ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA. EM SJGeorge@lbl.gov RI Deb, Aniruddha/H-7529-2016 OI Deb, Aniruddha/0000-0002-0331-9709 NR 138 TC 71 Z9 73 U1 10 U2 69 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0010-8545 J9 COORDIN CHEM REV JI Coord. Chem. Rev. PD JAN PY 2005 VL 249 IS 1-2 BP 3 EP 30 DI 10.1016/j.ccr.2004.05.017 PG 28 WC Chemistry, Inorganic & Nuclear SC Chemistry GA 889XY UT WOS:000226477400002 ER PT J AU Glatzel, P Bergmann, U AF Glatzel, P Bergmann, U TI High resolution 1s core hole X-ray spectroscopy in 3d transition metal complexes - electronic and structural information SO COORDINATION CHEMISTRY REVIEWS LA English DT Review DE X-ray fluorescence; X-ray absorption; resonant inelastic X-ray scattering; 3d transition metal; multiplet theory; electronic structured; chemical bonding ID RESONANT RAMAN-SCATTERING; ABSORPTION FINE-STRUCTURE; NICKEL-IRON HYDROGENASES; BETA EMISSION-SPECTRA; TI-K-EDGE; FLUORESCENCE SPECTROSCOPY; SINGLE-CRYSTALS; PRE-EDGE; ANGULAR-DEPENDENCE; OXIDATION-STATES AB The creation of a 1s core hole in a 3d transition metal ion gives rise to an emission spectrum that can be recorded using a crystal analyzer. K shell X-ray spectroscopy using an analyser energy bandwidth of similar to 1eV is sensitive to electron-electron interactions and orbital splittings and preserves the advantages of the hard X-ray probe. We review recent developments in Kalpha and Kbeta spectroscopy and show how the chemical sensitivity of the fluorescence lines can be exploited for selective X-ray absorption studies. When the photo excitation energy is tuned close to the K edge threshold, the phenomenon known as X-ray resonant Raman or resonant inelastic X-ray scattering (RIXS) occurs. RIXS spectroscopy on 3d transition metals at the 1s resonances with lowest incident energies (K pre-edge) is a very recent technique. We discuss basic aspects and demonstrate with several examples its potential as a future routine spectroscopic tool. (C) 2004 Elsevier B.V. All rights reserved. C1 Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA. Univ Utrecht, Dept Inorgan Chem & Catalysis, Debye Inst, NL-3584 CA Utrecht, Netherlands. RP Stanford Synchrotron Radiat Lab, POB 20450, Stanford, CA 94309 USA. EM pieter.glatzel@gmx.org; bergmann@slac.stanford.edu RI Glatzel, Pieter/E-9958-2010; ID, BioCAT/D-2459-2012; Institute (DINS), Debye/G-7730-2014 OI Glatzel, Pieter/0000-0001-6532-8144; NR 186 TC 420 Z9 421 U1 17 U2 210 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0010-8545 EI 1873-3840 J9 COORDIN CHEM REV JI Coord. Chem. Rev. PD JAN PY 2005 VL 249 IS 1-2 BP 65 EP 95 DI 10.1016/j.ccr.2004.04.011 PG 31 WC Chemistry, Inorganic & Nuclear SC Chemistry GA 889XY UT WOS:000226477400004 ER PT J AU Solomon, EI Hedman, B Hodgson, KO Dey, A Szilagyi, RK AF Solomon, EI Hedman, B Hodgson, KO Dey, A Szilagyi, RK TI Ligand K-edge X-ray absorption spectroscopy: covalency of ligand-metal bonds SO COORDINATION CHEMISTRY REVIEWS LA English DT Review DE ligand K-edge XAS; Cu-A; blue copper; iron-sulfur cluster; nickel dithiolene; DFT ID IRON-SULFUR PROTEINS; NITROUS-OXIDE REDUCTASE; BLUE COPPER SITE; CORRECT ASYMPTOTIC-BEHAVIOR; GROUND-STATE PROPERTIES; 1.6 ANGSTROM RESOLUTION; ELECTRON-TRANSFER SITE; MIXED-VALENCE SYSTEMS; CYTOCHROME-C-OXIDASE; ACTIVE-SITE AB The ligand K-edge probes the ligand 1s --> valence np transitions. These transitions acquire intensity when the ligand is bound to an open shell metal ion. This intensity quantifies the amount of ligand character in the metal d orbitals, hence the covalency of the ligand-metal bond. In this review the methodology is developed and applied to copper proteins, iron-sulfur sites and nickel dithiolene complexes, as examples. These illustrate the power and impact of this method in evaluating covalency contributions to electron transfer pathways, reduction potentials, H-bond interactions, electron delocalization in mixed-valent systems and small molecule reactivity. (C) 2004 Elsevier B.V. All rights reserved. C1 Stanford Univ, Dept Chem, Stanford, CA 94305 USA. Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA. Montana State Univ, Dept Chem & Biochem, Bozeman, MT 59717 USA. RP Solomon, EI (reprint author), Stanford Univ, Dept Chem, Stanford, CA 94305 USA. EM edward.solomon@stanford.edu; hedman@ssrl.slac.stanford.edu RI Szilagyi, Robert/G-9268-2012; Dey, Abhishek/D-2825-2013 OI Szilagyi, Robert/0000-0002-9314-6222; Dey, Abhishek/0000-0002-9166-3349 NR 138 TC 200 Z9 202 U1 12 U2 95 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0010-8545 J9 COORDIN CHEM REV JI Coord. Chem. Rev. PD JAN PY 2005 VL 249 IS 1-2 BP 97 EP 129 DI 10.1016/j.ccr.2004.03.020 PG 33 WC Chemistry, Inorganic & Nuclear SC Chemistry GA 889XY UT WOS:000226477400005 ER PT J AU Wall, FD Martinez, MA Missert, NA Copeland, RG Kilgo, AC AF Wall, FD Martinez, MA Missert, NA Copeland, RG Kilgo, AC TI Characterizing corrosion behavior under atmospheric conditions using electrochemical techniques SO CORROSION SCIENCE LA English DT Article DE aluminum; EIS; potentiostatic; atmospheric corrosion; pitting corrosion ID AC-IMPEDANCE METHOD; GALVANIC CURRENT; CARBON-STEEL; WATER FILM; SENSORS; MONITOR AB AC and DC electrochemical experiments were performed as a function of humidity and contaminant concentration in an effort to identify the range of atmospheric environments where corrosion processes could be detected and possibly quantified. AC measurements exhibited two time constants at 25% relative humidity (RH), possibly indicating the ability to resolve both electrolyte resistance and interfacial impedance. Galvanic current measurements were sensitive to the presence of Cl-2(g) at 30% RH and electrochemical transients were detected at both 30% and 50% RH levels, also indicating sensitivity to interfacial processes. Higher humidity levels allowed better quantification due to decreasing electrolyte and interfacial impedances. (C) 2003 Published by Elsevier Ltd. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Univ Virginia, Dept Mat Sci & Engn, Charlottesville, VA 22903 USA. EM vst@virginia.edu NR 27 TC 12 Z9 14 U1 1 U2 12 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0010-938X EI 1879-0496 J9 CORROS SCI JI Corrosion Sci. PD JAN PY 2005 VL 47 IS 1 BP 17 EP 32 DI 10.1016/S0010-938X(03)00081-7 PG 16 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA 883UH UT WOS:000226040700002 ER PT J AU Cramer, SD Jones, BP AF Cramer, Stephen D. Jones, Barnie P. BE Baboian, R TI Planning and Design of Tests SO CORROSION TESTS AND STANDARDS: APPLICATION AND INTERPRETATION, 2ND EDITION SE ASTM International Manual Series LA English DT Article; Book Chapter ID ATMOSPHERIC CORROSION; COPPER C1 [Cramer, Stephen D.] Albany Res Ctr, Mat Conservat Div, US DOE, Albany, OR 97321 USA. [Jones, Barnie P.] Oregon Dept Transportat, Res Unit, Salem, OR 97310 USA. RP Cramer, SD (reprint author), Albany Res Ctr, Mat Conservat Div, US DOE, 1450 Queen Ave SW, Albany, OR 97321 USA. OI Jones, Barnie/0000-0002-6214-5550 NR 43 TC 1 Z9 1 U1 0 U2 0 PU ASTM INTERNATIONAL PI WEST CONSHOHOCKEN PA 100 BARR HARBOR DRIVE, PO BOX C700, WEST CONSHOHOCKEN, PA 19428-2959 USA BN 978-0-8031-2098-3 J9 ASTM INT MAN SER PY 2005 IS MNL20 BP 49 EP 58 D2 10.1520/MNL20_2ND-EB PG 10 WC Materials Science, Characterization & Testing SC Materials Science GA BWO66 UT WOS:000294411500003 ER PT J AU Bagnall, C Tortorelli, PF Pawel, SJ DeVan, JH Schrock, SL AF Bagnall, Chris Tortorelli, Peter F. Pawel, Steven J. DeVan, Jack H. Schrock, Steven L. BE Baboian, R TI Liquid Metals SO CORROSION TESTS AND STANDARDS: APPLICATION AND INTERPRETATION, 2ND EDITION SE ASTM International Manual Series LA English DT Article; Book Chapter ID FLOWING-LITHIUM ENVIRONMENT; GRADIENT MASS-TRANSFER; STRUCTURAL-MATERIALS; STAINLESS-STEEL; CORROSION BEHAVIOR; FERROUS-ALLOYS; ALKALI-METALS; MOLTEN LEAD; COMPATIBILITY; NITROGEN C1 [Bagnall, Chris] MCS Associates Inc, Greensburg, PA 15601 USA. [Tortorelli, Peter F.; Pawel, Steven J.; DeVan, Jack H.; Schrock, Steven L.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Bagnall, C (reprint author), MCS Associates Inc, Greensburg, PA 15601 USA. NR 95 TC 0 Z9 0 U1 0 U2 0 PU ASTM INTERNATIONAL PI WEST CONSHOHOCKEN PA 100 BARR HARBOR DRIVE, PO BOX C700, WEST CONSHOHOCKEN, PA 19428-2959 USA BN 978-0-8031-2098-3 J9 ASTM INT MAN SER PY 2005 IS MNL20 BP 465 EP 479 D2 10.1520/MNL20_2ND-EB PG 15 WC Materials Science, Characterization & Testing SC Materials Science GA BWO66 UT WOS:000294411500042 ER PT J AU Abrams, BL Wilcoxon, JP AF Abrams, BL Wilcoxon, JP TI Nanosize semiconductors for photooxidation SO CRITICAL REVIEWS IN SOLID STATE AND MATERIALS SCIENCES LA English DT Review DE photocatalysis; semiconductor nanoclusters; quantum confinement; surface effects; MoS2 ID TRANSITION-METAL DICHALCOGENIDES; PHOTOCHEMICAL HYDROGEN-PRODUCTION; ELECTROCHEMICAL SOLAR-CELL; PARTICLE ELECTRON-TRANSFER; COLLOIDAL-CADMIUM-SULFIDE; LIGHT INDUCED GENERATION; SMALL CDS PARTICLES; MOS2 NANOCLUSTERS; VISIBLE-LIGHT; OPTICAL-PROPERTIES AB Nanosized semiconductors (semiconductor clusters) have the potential to revolutionize the fields of photooxidation and photocatalysis through the combined effects of quantum confinement and their unique surface morphologies. Photocatalytic oxidation as applied to environmental remediation (i.e., detoxification of chemical wastes), green/sustainable chemistry, as well as alternative energy paths (i.e., splitting of H2O to produce 112) has already experienced improvements in activity, efficiency, and stability, through the use of semiconductor nanoclusters based on materials such as TiO2, MoS2, WS2, MoSe2, FeS2, and SnO2. Issues such as improved control of size and surface chemistry play an important role in the success of these semiconductor nanocatalysts. This review explores the effect of advances in the fields of nanoscience and photocatalysis for current and future applications. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Abrams, BL (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM blabram@sandia.gov RI Abrams, Billie/C-1668-2012 NR 164 TC 74 Z9 78 U1 17 U2 141 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 1040-8436 J9 CRIT REV SOLID STATE JI Crit. Rev. Solid State Mat. Sci. PY 2005 VL 30 IS 3 BP 153 EP 182 DI 10.1080/10408430500200981 PG 30 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA 966JH UT WOS:000232015500002 ER PT B AU Gschneidner, KA Pecharsky, AO Pecharsky, VK AF Gschneidner, KA Pecharsky, AO Pecharsky, VK BE Ross, RG TI Development of new cryocooler regenerator materials - Ductile intermetallic compounds SO Cryocoolers 13 LA English DT Proceedings Paper CT 13th International Cryocooler Conference CY MAR 29-APR 01, 2004 CL New Orleans, LA SP Lockheed Martin ID HEAT-CAPACITIES AB The volumetric heat capacities of a number of binary and ternary Er- and Tm-based intermetallic compounds, which exhibited substantial ductilities, were measured from similar to 3 to similar to 350 K. They have the RM stoichiometry (where R = Er or Tm, and M is a main group or transition metal) and crystallize in the CsCl-type structure. The heat capacities of the Tm-based compounds are in general larger than the corresponding Er-based materials. Many of them have heat capacities which are significantly larger than those of the low temperature (< 15 K) prototype cryocooler regenerator materials HoCu2, Er3Ni and ErNi. Utilization of the new materials as regenerators in the various cryocoolers should improve the performance of these refrigeration units for cooling below 15 K. C1 Iowa State Univ Sci & Technol, Ames Lab, Mat & Engn Phys Program, Ames, IA 50011 USA. RP Gschneidner, KA (reprint author), Iowa State Univ Sci & Technol, Ames Lab, Mat & Engn Phys Program, Ames, IA 50011 USA. NR 15 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES BN 0-387-23901-4 PY 2005 BP 363 EP 371 PG 9 WC Thermodynamics SC Thermodynamics GA BBY33 UT WOS:000228319300047 ER PT J AU Booth, NA Land, T Erhmann, P Vekilov, PG AF Booth, NA Land, T Erhmann, P Vekilov, PG TI The aspect ratio of potassium dideuterium phosphate (DKDP) crystals SO CRYSTAL GROWTH & DESIGN LA English DT Article ID RAPID GROWTH; KDP CRYSTALS; SINGLE-CRYSTALS; KH2PO4 CRYSTALS; SUPERSATURATION; LASER AB Large crystals of potassium dideuterium phosphate (DKDP) are used for third harmonic generation in powerful lasers. To allow the optimal production of optical elements with a shape required by these applications, the aspect ratio, i.e., the ratio of a crystal's dimensions along the crystallographic axes, needs to be controlled. To highlight the factors that determine the aspect ratio, we have monitored the normal growth rate, local slope, and step velocity for both the prismatic {100} and the pyramidal {101} faces of DKDP crystals growing in solutions with saturation temperatures ranging from 52 to 70 degreesC over a range of supersaturation from 0 to 0.06 in the presence and absence of 1 ppm aluminum ions. We employ optical two-beam interferometry with the growing crystal face as one of the mirrors to determine the above three kinetic variables with a frequency of 1 s(-1). We find that in the probed temperature range, Al3+ ions are not effective in retarding the growth of the {100} faces to bias growth in the Z direction as is required for growth of crystals of sufficient size for use as optical elements at high power laser systems. The step kinetic coefficient does not change with the addition of Al3+ and, for the shallow vicinal on the (101) face, is in the range of 0.09-0.17 cm s(-1). C1 Univ Houston, Dept Chem Engn, Houston, TX 77204 USA. Lawrence Livermore Natl Lab, Dept Chem & Mat Sci, Livermore, CA 94550 USA. RP Booth, NA (reprint author), Univ Houston, Dept Chem Engn, Houston, TX 77204 USA. NR 29 TC 7 Z9 7 U1 0 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1528-7483 J9 CRYST GROWTH DES JI Cryst. Growth Des. PD JAN-FEB PY 2005 VL 5 IS 1 BP 105 EP 110 DI 10.1021/cg049963q PG 6 WC Chemistry, Multidisciplinary; Crystallography; Materials Science, Multidisciplinary SC Chemistry; Crystallography; Materials Science GA 885ZU UT WOS:000226196700022 ER PT J AU Behr, G Loser, W Apostu, MO Gruner, W Hucker, M Schramm, L Souptel, D Teresiak, A Werner, J AF Behr, G Loser, W Apostu, MO Gruner, W Hucker, M Schramm, L Souptel, D Teresiak, A Werner, J TI Floating zone growth of CuO under elevated oxygen pressure and its relevance for the crystal growth of cuprates SO CRYSTAL RESEARCH AND TECHNOLOGY LA English DT Article DE crystal growth; floating zone technique; CuO; oxides ID COPPER-OXIDE SUPERCONDUCTORS; SYSTEM; MODEL AB CuO single crystals have been grown from the melt by a floating zone method with optical heating at elevated oxygen pressures 3.5 to 5.5 MPa and growth rates as high as 10 mm/h. Melting experiments and recalculated Cu-O phase diagram data show that CuO melts incongruently. The melting temperature increases and the concentration difference between the melt and the CuO phase decreases for rising oxygen partial pressure. Accordingly, increasing the oxygen partial pressure improves the growth process by reducing both the significant oxygen loss during melting as well as the composition difference at the growth interface. The results on CuO provide important information for the crystal growth of more complex cuprates. C1 IFW Dresden, Leibniz Inst Festkorper & Werkstoffforsch, D-01171 Dresden, Germany. Al I Cuza Univ, Iasi 6600, Romania. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Behr, G (reprint author), IFW Dresden, Leibniz Inst Festkorper & Werkstoffforsch, Helmholtzstr 20, D-01171 Dresden, Germany. EM behr@ifw-dresden.de RI Cuza, UAIC/D-2604-2009 NR 17 TC 13 Z9 13 U1 2 U2 17 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 0232-1300 J9 CRYST RES TECHNOL JI Cryst. Res. Technol. PD JAN PY 2005 VL 40 IS 1-2 BP 21 EP 25 DI 10.1002/crat.200410303 PG 5 WC Crystallography SC Crystallography GA 889YJ UT WOS:000226478500003 ER PT J AU Gatley, SJ Volkow, ND Wang, GJ Fowler, JS Logan, J Ding, YS Gerasimov, M AF Gatley, SJ Volkow, ND Wang, GJ Fowler, JS Logan, J Ding, YS Gerasimov, M TI PET imaging in clinical drug abuse research SO CURRENT PHARMACEUTICAL DESIGN LA English DT Review ID POSITRON-EMISSION-TOMOGRAPHY; CEREBRAL BLOOD-FLOW; NICOTINIC ACETYLCHOLINE-RECEPTORS; BRAIN GLUCOSE-METABOLISM; DOPAMINE TRANSPORTER OCCUPANCY; MONOAMINE-OXIDASE B; DEFICIT HYPERACTIVITY DISORDER; ADENOSINE A(2A) RECEPTORS; CANNABINOID CB1 RECEPTORS; SEVERE CHRONIC-ALCOHOLISM AB Over the last two decades, SPECT (single photon emission computed tomography) and especially PET (positron emission tomography) have proven increasingly effective imaging modalities in the study of human psychopharmacology. Abusing populations can be studied at multiple times after abstinence begins, to give information about neurochemical and physiological adaptations of the brain during recovery from addiction. Individual human subjects can be studied using multiple positron labeled radiotracers, so as to probe more than one facet of brain function. PET and SPECT have been used to help our understanding of many aspects of the pharmacokinetics and pharmacodynamics of abused drugs, and have made valuable contributions in terms of drug mechanisms, drug interactions (e.g. cocaine and alcohol) and drug toxicities. They have also been employed to study the acute effects of drugs on populations of active drug abusers and of normal controls, and to evaluate the neurochemical consequences of candidate therapies for drug abuse. A particularly productive strategy has been the use of PET in conjunction with neuropsychological testing of subjects, to allow correlation of imaging data with uniquely human aspects of the effects of drugs, such as euphoria and craving. C1 Brookhaven Natl Lab, Ctr Translat Neuroimaging, Upton, NY 11973 USA. RP Gatley, SJ (reprint author), Northeastern Univ, Ctr Drug Discovery, 116 Mugar,360 Huntington Ave, Boston, MA 02115 USA. EM gatley@neu.edu FU NIAAA NIH HHS [1 R21 AA014018-02]; NIDA NIH HHS [1 R21 DA15545, 1 R21 DA16025, 5 T32 DA07316] NR 189 TC 27 Z9 29 U1 1 U2 7 PU BENTHAM SCIENCE PUBL LTD PI SHARJAH PA EXECUTIVE STE Y26, PO BOX 7917, SAIF ZONE, 1200 BR SHARJAH, U ARAB EMIRATES SN 1381-6128 J9 CURR PHARM DESIGN JI Curr. Pharm. Design PY 2005 VL 11 IS 25 BP 3203 EP 3219 DI 10.2174/138161205774424717 PG 17 WC Pharmacology & Pharmacy SC Pharmacology & Pharmacy GA 960UC UT WOS:000231617700002 PM 16250850 ER PT S AU Radmilovic, V Mitlin, D Dahmen, U AF Radmilovic, V Mitlin, D Dahmen, U BE Uskokovic, DP Milonjic, SK Rakovic, DI TI Ultra-hard nanostructured Al-Si thin films SO CURRENT RESEARCH IN ADVANCED MATERIALS AND PROCESSES SE MATERIALS SCIENCE FORUM LA English DT Article; Proceedings Paper CT 6th Conference of the Yugoslav-Materials-Research-Society CY SEP 13-17, 2004 CL Herceg Novi, SERBIA MONTENEG SP Republic Serbia, Minist Sci & Environm Protect, Yugoslav Mat Res Soc DE Al-Si alloys; e-beam deposition; nano-composites; nanocrystalline alloys; nanostructure; thin films ID PRECIPITATION; STRENGTH; CRYSTALS AB We show that it is possible to use high rate co-evaporation of Al and Si onto room temperature substrates to achieve a novel two-phase nanoscale microstructure. These nanocomposites have a hardness as high as 4GPa (Al-23at.%Si), and display noticeable plasticity. Films with compositions of Al-12at.%Si and pure Al (used as baseline) were analyzed using transmission electron microscopy (TEM). The scale of the Al-12at.%Si microstructure is an order of magnitude finer compared to that of pure Al films. It consists of a dense distribution of spherical nanoscale Si particles separating irregularly-shaped small Al grains. These new structures may have a mechanical performance advantage over conventional single phase nanomaterials due to the role of the dispersed hard phase in promoting strain hardening. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA. Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada. RP Radmilovic, V (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA. EM VRRadmilovic@lbl.gov RI Mitlin , David /M-5328-2016 OI Mitlin , David /0000-0002-7556-3575 NR 12 TC 0 Z9 0 U1 0 U2 0 PU TRANS TECH PUBLICATIONS LTD PI ZURICH-UETIKON PA BRANDRAIN 6, CH-8707 ZURICH-UETIKON, SWITZERLAND SN 0255-5476 BN 0-87849-971-7 J9 MATER SCI FORUM PY 2005 VL 494 BP 13 EP 18 PG 6 WC Materials Science, Ceramics; Materials Science, Multidisciplinary; Materials Science, Biomaterials; Materials Science, Characterization & Testing SC Materials Science GA BCR96 UT WOS:000230985800003 ER PT S AU Nedeljkovic, JM Micic, OI Ahrenkiel, SP Nozik, AJ AF Nedeljkovic, JM Micic, OI Ahrenkiel, SP Nozik, AJ BE Uskokovic, DP Milonjic, SK Rakovic, DI TI Synthesis and characterization of III-V rod shape semiconductor nanocrystals SO CURRENT RESEARCH IN ADVANCED MATERIALS AND PROCESSES SE MATERIALS SCIENCE FORUM LA English DT Article; Proceedings Paper CT 6th Conference of the Yugoslav-Materials-Research-Society CY SEP 13-17, 2004 CL Herceg Novi, SERBIA MONTENEG SP Republic Serbia, Minist Sci & Environm Protect, Yugoslav Mat Res Soc DE colloidal synthesis; InAs; InP; quantum rods ID INP QUANTUM RODS; INDIUM NANOPARTICLES; GROWTH; NANOSTRUCTURES; PARTICLES; DOTS AB InP and InAs quantum rods were synthesized via the reactions of monodispersed indium droplets with phosphide or arsenide ions, respectively. In these reactions indium droplets, which do not act as a catalyst but rather as a reactant, are completely consumed. For the synthesis of InP and InAs quantum rods with a narrow size distribution, a narrow size distribution of indium particles is required because each indium droplet serves as a template to strictly limit the lateral growth of individual InP or InAs nanocrystals. Free-standing InP (130 angstrom diameter and 870 angstrom length) and InAs (180 angstrom diameter and 745 A length) quantum rods without residual metallic catalyst at the rod tip were synthesized from the diluted transparent solutions of metallic indium. Both kinds of synthesized nanorods are in the strong confinement regime since the Bohr diameters of InP and InAs are 200 and 700 angstrom, respectively. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Nedeljkovic, JM (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA. EM jovned@vin.bg.ac.yu NR 23 TC 1 Z9 1 U1 0 U2 4 PU TRANS TECH PUBLICATIONS LTD PI ZURICH-UETIKON PA BRANDRAIN 6, CH-8707 ZURICH-UETIKON, SWITZERLAND SN 0255-5476 BN 0-87849-971-7 J9 MATER SCI FORUM PY 2005 VL 494 BP 121 EP 128 PG 8 WC Materials Science, Ceramics; Materials Science, Multidisciplinary; Materials Science, Biomaterials; Materials Science, Characterization & Testing SC Materials Science GA BCR96 UT WOS:000230985800021 ER PT S AU Tripkovic, AV Popovic, KD Lovic, JD Markovic, NM Radmilovic, V AF Tripkovic, AV Popovic, KD Lovic, JD Markovic, NM Radmilovic, V BE Uskokovic, DP Milonjic, SK Rakovic, DI TI Formic acid oxidation on Pt/Ru nanoparticles: Temperature effects SO CURRENT RESEARCH IN ADVANCED MATERIALS AND PROCESSES SE MATERIALS SCIENCE FORUM LA English DT Article; Proceedings Paper CT 6th Conference of the Yugoslav-Materials-Research-Society CY SEP 13-17, 2004 CL Herceg Novi, SERBIA MONTENEG SP Republic Serbia, Minist Sci & Environm Protect, Yugoslav Mat Res Soc DE effect of temperature; supported Pt/Ru catalyst; formic acid oxidation ID SMALL ORGANIC-MOLECULES; PT-RU ALLOYS; METHANOL OXIDATION; SINGLE-CRYSTAL; ELECTROCATALYSIS; ELECTROOXIDATION; ELECTRODES; PT(111); CO AB The formic acid oxidation on Pt/Ru nanoparticles in acid solution over the temperature range 298-333 K has been studied by thin-film rotating disk method (RDE). Transmission electron microscopy in combination with scanning tunneling microscopy was used to determine the size (4.3 +/- 0.3 nm) and shape (cuboctahedral) of the particles. Kinetic analysis revealed that at elevated temperatures (313 K, 333 K) the reaction rate is much higher than at room temperature (295 K), indicating that formic acid oxidation on supported Pt/Ru catalyst is a highly activated process. Based on experimental kinetic parameters we propose that the HCOOH oxidation on the PtRu alloy most likely follows a dual pathway, but the branching ratio is still very high, i.e. Pt-like. The principal effect of opening the dehydration channel at steady-state (via the presence of Ru in the surface) is to lower the coverage of COads on Pt sites and permit the dehydrogenation path to increase in rate. C1 Univ Belgrade, Inst Electrochem, ICTM, Belgrade 11000, Serbia Monteneg. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Tripkovic, AV (reprint author), Univ Belgrade, Inst Electrochem, ICTM, Njegoseva 12,POB 473, Belgrade 11000, Serbia Monteneg. EM amalija@tmf.bg.ac.yu RI Popovic, Ksenija/F-3844-2012; Lovic, Jelena/E-5174-2012 NR 18 TC 6 Z9 6 U1 2 U2 9 PU TRANS TECH PUBLICATIONS LTD PI ZURICH-UETIKON PA BRANDRAIN 6, CH-8707 ZURICH-UETIKON, SWITZERLAND SN 0255-5476 BN 0-87849-971-7 J9 MATER SCI FORUM PY 2005 VL 494 BP 223 EP 228 PG 6 WC Materials Science, Ceramics; Materials Science, Multidisciplinary; Materials Science, Biomaterials; Materials Science, Characterization & Testing SC Materials Science GA BCR96 UT WOS:000230985800037 ER PT B AU Masse, WB Soklow, R AF Masse, WB Soklow, R BE Fountain, JW Sinclair, RM TI Black suns and dark times: Cultural responses to solar eclipses in the Ancient Puebloan Southwest SO Current Studies in Archaeoastronomy: Conversations Across Time and Space LA English DT Proceedings Paper CT 5th Meeting on Cultural Aspects of Astronomy CY AUG 03-09, 1996 CL St John Coll, Santa Fe, NM HO St John Coll AB The apparent subjective nature of past iconographies and traditional cosmologies has made archaeologists and astronomers reluctant to investigate the possible correlations between cultural behavior and known or reconstructible naked-eye visible temporary celestial events (e.g., novae, comets, meteor storms, eclipses). The findings presented in this paper are intended to encourage such investigations for the solar eclipses of the Puebloan portion of the American Southwest between A.D. 1 and 1540. We identify these eclipses and provide a contextual basis for suggesting that previously inexplicable events, processes, and iconography manifest at certain periods in the archaeological record are responses to specific eclipses and eclipse clusters. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 44 TC 1 Z9 1 U1 0 U2 0 PU CAROLINA ACADEMIC PR PI DURHAM PA PO BOX 8795, FOREST HILLS STATION, DURHAM, NC 27707 USA BN 0-89089-771-9 PY 2005 BP 47 EP 67 PG 21 WC Anthropology; Archaeology; History SC Anthropology; Archaeology; History GA BCZ82 UT WOS:000232156700005 ER PT J AU Mailhes, JB Marchetti, F AF Mailhes, JB Marchetti, F TI Mechanisms and chemical induction of aneuploidy in rodent germ cells SO CYTOGENETIC AND GENOME RESEARCH LA English DT Review ID GRISEOFULVIN-INDUCED ANEUPLOIDY; SISTER-CHROMATID COHESION; SPINDLE-ASSEMBLY CHECKPOINT; POLO-LIKE KINASE-1; PREMATURE CENTROMERE SEPARATION; MOS PROTOONCOGENE PRODUCT; MOUSE OOCYTE MATURATION; KINESIN-RELATED PROTEIN; II INHIBITOR ETOPOSIDE; MEIOSIS-I AB The objective of this review is to suggest that the advances being made in our understanding of the molecular events surrounding chromosome segregation in non-mammalian and somatic cell models be considered when designing experiments for studying aneuploidy in mammalian germ cells. Accurate chromosome segregation requires the temporal control and unique interactions among a vast array of proteins and cellular organelles. Abnormal function and temporal disarray among these, and others to be identified, biochemical reactions and cellular organelles have the potential for predisposing cells to aneuploidy. Although numerous studies have demonstrated that certain chemicals (mainly those that alter microtubule function) can induce aneuploidy in mammalian germ cells, it seems relevant to point out that such data can be influenced by gender, meiotic stage, and time of cell-fixation post-treatment. Additionally, a consensus has not been reached regarding which of several germ cell aneuploidy assays most accurately reflects the human condition. More recent studies have shown that certain kinase, phosphatase, proteasome, and topoisomerase inhibitors can also induce aneuploidy in rodent germ cells. We suggest that molecular approaches be prudently incorporated into mammalian germ cell aneuploidy research in order to eventually understand the causes and mechanisms of human aneuploidy. Such an enormous undertaking would benefit from collaboration among scientists representing several disciplines. C1 Louisiana State Univ, Ctr Hlth Sci, Dept Obstet & Gynecol, Shreveport, LA 71130 USA. Lawrence Livermore Natl Lab, Biol & Biotechnol Res Program, Liverpool, CA USA. RP Mailhes, JB (reprint author), Louisiana State Univ, Ctr Hlth Sci, Dept Obstet & Gynecol, POB 33932, Shreveport, LA 71130 USA. EM jmailh@lsuhsc.edu OI Marchetti, Francesco/0000-0002-9435-4867 NR 165 TC 8 Z9 8 U1 0 U2 2 PU KARGER PI BASEL PA ALLSCHWILERSTRASSE 10, CH-4009 BASEL, SWITZERLAND SN 1424-8581 J9 CYTOGENET GENOME RES JI Cytogenet. Genome Res. PY 2005 VL 111 IS 3-4 BP 384 EP 391 DI 10.1159/000086916 PG 8 WC Cell Biology; Genetics & Heredity SC Cell Biology; Genetics & Heredity GA 968AX UT WOS:000232134400029 PM 16192721 ER PT J AU De Leo, AA Wheeler, D Lefevre, C Cheng, JF Hope, R Kuliwaba, J Nicholas, KR Westerman, M Graves, JAM AF De Leo, AA Wheeler, D Lefevre, C Cheng, JF Hope, R Kuliwaba, J Nicholas, KR Westerman, M Graves, JAM TI Sequencing and mapping hemoglobin gene clusters in the Australian model dasyurid marsupial Sminthopsis macroura SO CYTOGENETIC AND GENOME RESEARCH LA English DT Article ID BETA-GLOBIN LOCUS; DNA-BINDING SPECIFICITIES; CONTROL REGION; ALPHA-GLOBIN; EVOLUTION; INSULATOR; TRANSCRIPTION; ELEMENTS; PROTEIN; MOUSE AB Comparing globin genes and their flanking sequences across many species has allowed globin gene evolution to be reconstructed in great detail. Marsupial globin sequences have proved to be of exceptional significance. A previous finding of a beta(beta)-like omega(omega) gene in the alpha(alpha) cluster in the tammar wallaby suggested that the alpha and beta cluster evolved via genome duplication and loss rather than tandem duplication. To confirm and extend this important finding we isolated and sequenced BACs containing the alpha and beta loci from the distantly related Australian marsupial Sminthopsis macroura. We report that the alpha gene lies in the same BAC as the beta-like omega gene, implying that the alpha-omega juxtaposition is likely to be conserved in all marsupials. The LUC7L gene was found 3' of the S. macroura alpha locus, a gene order shared with humans but not mouse, chicken or fugu. Sequencing a BAC contig that contained the S. macroura beta globin and epsilon globin loci showed that the globin cluster is flanked by olfactory genes, demonstrating a gene arrangement conserved for over 180 MY. Analysis of the region 5' to the S. macroura epsilon (epsilon) globin gene revealed a region similar to the eutherian LCR, containing sequences and potential transcription factor binding sites with homology to eutherian hypersensitive sites 1 to 5. FISH mapping of BACs containing S. macroura alpha and beta globin genes located the beta globin cluster on chromosome 3q and the alpha locus close to the centromere on 1q, resolving contradictory map locations obtained by previous radioactive in situ hybridization. Copyright (C) 2005 S. Karger AG, Basel. C1 Univ Melbourne, Dept Zool, Melbourne, Vic 3010, Australia. Australian Natl Univ, Res Sch Biol Sci, ARC Ctr Kangaroo Genom, Canberra, ACT 2601, Australia. Australian Natl Univ, Comparat Genom Res Grp, Canberra, ACT, Australia. La Trobe Univ, Dept Genet, Bundoora, Vic 3083, Australia. Univ Adelaide, Dept Mol Biosci, Adelaide, SA, Australia. Univ Adelaide, Ctr Evolutionary Biol & Biodivers, Adelaide, SA, Australia. Univ Calif Berkeley, Lawrence Berkeley Lab, Genom Div, Berkeley, CA 94720 USA. Monash Univ, Victorian Bioinformat Consortium, Clayton, Vic 3168, Australia. Inst Med & Vet Sci, Bone & Joint Res Lab, Adelaide, SA 5000, Australia. RP De Leo, AA (reprint author), Univ Melbourne, Dept Zool, Melbourne, Vic 3010, Australia. EM a.deleo@pgrad.unimelb.edu.au RI Graves, Jennifer/A-1387-2008 NR 39 TC 12 Z9 13 U1 0 U2 0 PU KARGER PI BASEL PA ALLSCHWILERSTRASSE 10, CH-4009 BASEL, SWITZERLAND SN 1424-8581 J9 CYTOGENET GENOME RES JI Cytogenet. Genome Res. PY 2005 VL 108 IS 4 BP 333 EP 341 DI 10.1159/000081528 PG 9 WC Cell Biology; Genetics & Heredity SC Cell Biology; Genetics & Heredity GA 883KZ UT WOS:000226012000010 PM 15627754 ER PT J AU Bazilevsky, A AF Bazilevsky, A CA PHENIX Collaboration TI PHENIX spin program, recent results SO CZECHOSLOVAK JOURNAL OF PHYSICS LA English DT Article; Proceedings Paper CT SPIN Praha 2004 Meeting CY JUL 05-10, 2004 CL Prague, CZECH REPUBLIC DE proton; spin; polarization; asymmetry; deep-inelastic ID POLARIZED PARTON DISTRIBUTIONS; PI-0 PRODUCTION; CROSS-SECTIONS; PP COLLISIONS; ASYMMETRY; PROTON; SCATTERING; DETECTORS; ANTIPROTONS AB Acceleration of polarized protons in Relativistic Heavy Ion Collider (RHIC) provides unique tool to study the spin structure of the nucleon. We give a brief overview of the PHENIX program to investigate poorly known gluon and flavor decomposed see quark polarization in the proton, utilizing polarized proton collisions at RHIC. We report PHENIX first results on transverse single-spin asymmetry in pi(0) and charged hadron production and longitudinal double-spin asymmetry in pi(0) production at mid-rapidity. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Bazilevsky, A (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 32 TC 0 Z9 0 U1 0 U2 1 PU INST PHYSICS ACAD SCI CZECH REPUBLIC PI PRAGUE PA NA SLOVANCE 2, PRAGUE 182 21, CZECH REPUBLIC SN 0011-4626 J9 CZECH J PHYS JI Czech. J. Phys. PY 2005 VL 55 SU A BP A55 EP A64 PG 10 WC Physics, Multidisciplinary SC Physics GA 942YU UT WOS:000230319600006 ER PT J AU Armstrong, SR AF Armstrong, SR CA ATLAS Higgs Working Grp TI ATLAS Higgs boson searches via vector boson fusion SO CZECHOSLOVAK JOURNAL OF PHYSICS LA English DT Article; Proceedings Paper CT 2nd Conference on Physics at the Large Hadron Collider CY JUL 13-17, 2004 CL Austrian Acad Sci, Inst High Energy Phys, Vienna, AUSTRIA SP Austrian Acad Sci, Austrian Fed Minist Educ, Sci & Culture, European Org Nucl Res, Univ Florida, Charles Univ, Czech Tech Univ HO Austrian Acad Sci, Inst High Energy Phys DE ATLAS Higgs boson searches vector boson fusion AB The discovery of the Higgs boson is a central theme of the LHC experimental program. Channels in which the Higgs boson is produced via Vector Boson Fusion have a distinct final state signature and significantly enhance the discovery potential. Analyses designed for VBF Higgs boson searches with the ATLAS detector in the low and intermediate mass ranges are summarized. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Armstrong, SR (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. NR 7 TC 0 Z9 0 U1 0 U2 0 PU INST PHYSICS ACAD SCI CZECH REPUBLIC PI PRAGUE PA NA SLOVANCE 2, PRAGUE 182 21, CZECH REPUBLIC SN 0011-4626 J9 CZECH J PHYS JI Czech. J. Phys. PY 2005 VL 55 SU B BP B109 EP B116 PN 1 PG 8 WC Physics, Multidisciplinary SC Physics GA 018BY UT WOS:000235739100011 ER PT J AU Assamagan, KA Guasch, J Moretti, S Penaranda, S AF Assamagan, KA Guasch, J Moretti, S Penaranda, S TI Distinguishing Higgs models in H+ -> tau(+)v/t(b)over-bar at large tan beta SO CZECHOSLOVAK JOURNAL OF PHYSICS LA English DT Article DE Higgs physics; supersymmetry phenomenology; LHC ID BOSON; DECAYS; LHC AB We present an experimental and theoretical analysis of the ratio of branching ratios R, = BR(H+ -> tau(+)nu)/BR(H+ -> t (b) over bar) of charged Higgs boson decays as a discriminant quantity between supersymmetric and non-supersymmetric models. C1 Brookhaven Natl Lab, Upton, NY 11792 USA. Paul Scherrer Inst, CH-5232 Villigen, Switzerland. Univ Southampton, Sch Phys & Astron, Highfield SO17 1BJ, England. CERN, Div TH, Dept Phys, CH-1211 Geneva 23, Switzerland. RP Assamagan, KA (reprint author), Brookhaven Natl Lab, Upton, NY 11792 USA. RI Guasch, Jaume/C-5040-2014 OI Guasch, Jaume/0000-0001-9641-5355 NR 20 TC 5 Z9 5 U1 0 U2 0 PU INST PHYSICS ACAD SCI CZECH REPUBLIC PI PRAGUE PA NA SLOVANCE 2, PRAGUE 182 21, CZECH REPUBLIC SN 0011-4626 J9 CZECH J PHYS JI Czech. J. Phys. PY 2005 VL 55 SU B BP B787 EP B792 PN 2 PG 6 WC Physics, Multidisciplinary SC Physics GA 018BZ UT WOS:000235739200029 ER PT J AU Chanowitz, MS AF Chanowitz, MS TI The no-Higgs signal: Strong WW scattering at the LHC SO CZECHOSLOVAK JOURNAL OF PHYSICS LA English DT Article; Proceedings Paper CT 2nd Conference on Physics at the Large Hadron Collider CY JUL 13-17, 2004 CL Austrian Acad Sci, Inst High Energy Phys, Vienna, AUSTRIA SP Austrian Acad Sci, Austrian Fed Minist Educ, Sci & Culture, European Org Nucl Res, Univ Florida, Charles Univ, Czech Tech Univ HO Austrian Acad Sci, Inst High Energy Phys DE WW scattering; electroweak symmetry; LHC ID EQUIVALENCE THEOREM; PRECISE FORMULATION; INTERACTING WS; UNITARITY; ZS AB Strong WW scattering at the LHC is discussed as a manifestation of electroweak symmetry breaking in the absence of a light Higgs boson. The general framework of the Higgs mechanism - with or without a Higgs boson - is reviewed, and unitarity is shown to fix the scale of strong WW scattering. Strong WW scattering is also shown to be a possible outcome of five-dimensional models, which do not employ the usual Higgs mechanism at the TeV scale. Precision electroweak constraints are briefly discussed. Illustrative LHC signals are reviewed for models with QCD-like dynamics, stressing the complementarity of the W(+/-)Z and like-charge W+W+ + W-W- channels. C1 Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Chanowitz, MS (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. NR 33 TC 15 Z9 15 U1 0 U2 0 PU INST PHYSICS ACAD SCI CZECH REPUBLIC PI PRAGUE PA NA SLOVANCE 2, PRAGUE 182 21, CZECH REPUBLIC SN 0011-4626 J9 CZECH J PHYS JI Czech. J. Phys. PY 2005 VL 55 SU B BP B45 EP B58 PN 1 PG 14 WC Physics, Multidisciplinary SC Physics GA 018BY UT WOS:000235739100004 ER PT J AU Csaki, C Cacciapaglia, G Grojean, C Terning, J AF Csaki, C Cacciapaglia, G Grojean, C Terning, J TI Higgsless electroweak symmetry breaking SO CZECHOSLOVAK JOURNAL OF PHYSICS LA English DT Article DE electroweak symmetry breaking; extra dimensions AB We study tree level corrections to precision electroweak physics in the recently proposed Higgsless models in warped space. Such models inherit from their similarity with technicolor theories a large contribution to the oblique parameters, S in particular. We show that it is possible to suppress S using brane induced kinetic terms and unequal left-right bulk gauge couplings, paying the price of heavy KK modes. In the allowed region, they are eventually ineffective in restoring perturbative unitarity in TV scattering above 2TeV. Even though this looks like a difficult problem to overcome for these models, we show that it can be easily solved by delocalizing the light fermions. C1 Cornell Univ, Inst High Energy Phenomenol, Newman Lab Elementary Particle Phys, Ithaca, NY 14850 USA. CEA Saclay, SPhT, F-91191 Gif Sur Yvette, France. Los Alamos Natl Lab, Theory Div T8, Los Alamos, NM 87545 USA. RP Csaki, C (reprint author), Cornell Univ, Inst High Energy Phenomenol, Newman Lab Elementary Particle Phys, Ithaca, NY 14850 USA. NR 7 TC 0 Z9 0 U1 0 U2 0 PU INST PHYSICS ACAD SCI CZECH REPUBLIC PI PRAGUE PA NA SLOVANCE 2, PRAGUE 182 21, CZECH REPUBLIC SN 0011-4626 J9 CZECH J PHYS JI Czech. J. Phys. PY 2005 VL 55 SU B BP B613 EP B618 PN 2 PG 6 WC Physics, Multidisciplinary SC Physics GA 018BZ UT WOS:000235739200011 ER PT J AU Frankfurt, L Strikman, M Weiss, C Zhalov, M AF Frankfurt, L Strikman, M Weiss, C Zhalov, M TI Transverse structure of strong interactions at LHC: From diffraction to new particle production SO CZECHOSLOVAK JOURNAL OF PHYSICS LA English DT Article DE diffraction; generalized parton distributions; central collisions ID COLOR-TRANSPARENCY; SMALL-X; QCD; EVOLUTION; NUCLEON; PP AB We discuss the global structure of pp events at LHC with hard processes (particle production in two-parton collisions) on the basis of the transverse spatial characteristics of the pat-tonic initial state. Studies of hard exclusive processes in ep scattering have shown that the transverse area occupied by partons with x >= 10(-2) is much smaller than the size of the nucleon as it appears in generic inelastic pp collisions at high energies ("two-scale picture"). We show that this is consistent with the observation that the elastic PP amplitude at the Tevatron energy is close to the black body limit at small impact parameters. Our picture implies that inclusive heavy particle production (Higgs, SUSY) happens only in central pp collisions. At LHC energies, the final state characteristics of such events are strongly influenced by the approach to the black body limit, and thus may differ substantially from what one expects based on the extrapolation of Tevatron results. Our two-scale picture also allows us to analyze several types of hard diffractive processes observable at LHC: i) Diffractive proton dissociation into three jets, which probes small-size configurations in the proton wave function; ii) exclusive diffractive Higgs production, in which we estimate the rapidity gap survival probability; iii) inclusive diffractive processes. C1 Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel. Penn State Univ, Dept Phys, University Pk, PA 16802 USA. Jefferson Lab, Theory Grp, Newport News, VA 23606 USA. Petersburg Nucl Phys Inst, Gatchina 188300, Russia. RP Frankfurt, L (reprint author), Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel. NR 26 TC 4 Z9 4 U1 0 U2 0 PU INST PHYSICS ACAD SCI CZECH REPUBLIC PI PRAGUE PA NA SLOVANCE 2, PRAGUE 182 21, CZECH REPUBLIC SN 0011-4626 J9 CZECH J PHYS JI Czech. J. Phys. PY 2005 VL 55 SU B BP B675 EP B692 PN 2 PG 18 WC Physics, Multidisciplinary SC Physics GA 018BZ UT WOS:000235739200019 ER PT J AU Lykken, JD AF Lykken, JD TI Phenomenology beyond the Standard Model SO CZECHOSLOVAK JOURNAL OF PHYSICS LA English DT Article DE supersymmetry; extra dimensions; collider physics; Higgs; strings ID EXTRA DIMENSIONS; SUPERSYMMETRY-BREAKING; HIERARCHY; HIGGS; COMPACTIFICATION; PARTICLE; PHYSICS; SEARCH; BOSONS; MASS AB An elementary review of models and phenomenology for physics beyond the Standard Model (excluding supersymmetry). The emphasis is on LHC physics. C1 Fermilab Natl Accelerator Lab, Dept Theoret Phys, Batavia, IL 60510 USA. RP Lykken, JD (reprint author), Fermilab Natl Accelerator Lab, Dept Theoret Phys, POB 500, Batavia, IL 60510 USA. NR 69 TC 1 Z9 1 U1 0 U2 0 PU INST PHYSICS ACAD SCI CZECH REPUBLIC PI PRAGUE PA NA SLOVANCE 2, PRAGUE 182 21, CZECH REPUBLIC SN 0011-4626 J9 CZECH J PHYS JI Czech. J. Phys. PY 2005 VL 55 SU B BP B577 EP B598 PN 2 PG 22 WC Physics, Multidisciplinary SC Physics GA 018BZ UT WOS:000235739200009 ER PT J AU Paige, FE AF Paige, FE TI SUSY signatures at LHC SO CZECHOSLOVAK JOURNAL OF PHYSICS LA English DT Article; Proceedings Paper CT 2nd Conference on Physics at the Large Hadron Collider CY JUL 13-17, 2004 CL Austrian Acad Sci, Inst High Energy Phys, Vienna, AUSTRIA SP Austrian Acad Sci, Austrian Fed Minist Educ, Sci & Culture, European Org Nucl Res, Univ Florida, Charles Univ, Czech Tech Univ HO Austrian Acad Sci, Inst High Energy Phys DE supersymmetry; SUSY; LHC; ATLAS; CMS AB This talk reviews work on supersymmetry (SUSY) by the ATLAS and CMS Collaborations for the CERN Large Hadron Collider with emphasis on recent developments. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Paige, FE (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 9 TC 2 Z9 2 U1 0 U2 0 PU INST PHYSICS ACAD SCI CZECH REPUBLIC PI PRAGUE PA NA SLOVANCE 2, PRAGUE 182 21, CZECH REPUBLIC SN 0011-4626 J9 CZECH J PHYS JI Czech. J. Phys. PY 2005 VL 55 SU B BP B185 EP B196 PN 1 PG 12 WC Physics, Multidisciplinary SC Physics GA 018BY UT WOS:000235739100019 ER PT J AU Quigg, C AF Quigg, C TI Revolutions and revelations SO CZECHOSLOVAK JOURNAL OF PHYSICS LA English DT Article DE large Hadron Collider; particle physics C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. EM quigg@fnal.gov NR 11 TC 0 Z9 0 U1 0 U2 0 PU INST PHYSICS ACAD SCI CZECH REPUBLIC PI PRAGUE PA NA SLOVANCE 2, PRAGUE 182 21, CZECH REPUBLIC SN 0011-4626 J9 CZECH J PHYS JI Czech. J. Phys. PY 2005 VL 55 SU B BP B769 EP B785 PN 2 PG 17 WC Physics, Multidisciplinary SC Physics GA 018BZ UT WOS:000235739200028 ER PT J AU Shukla, P Cowley, AH Jones, JN Gordon, JC Scott, BL AF Shukla, P Cowley, AH Jones, JN Gordon, JC Scott, BL TI Fluoroaryl-substituted aminoalane dimers: syntheses and structures SO DALTON TRANSACTIONS LA English DT Article ID DIIMINE AQUA COMPLEX; MOLECULAR-STRUCTURES; CRYSTAL-STRUCTURES; ORGANOALUMINUM COMPOUNDS; HYDROCARBON ACTIVATION; HYDROXYLIC SOLVENT; ALUMINUM AMIDES; MILD CONDITIONS; IMINOMETALLANES; AMINOMETALLANES AB Six dimeric aminoalanes of formula [Me2Al-mu-N(H)Ar-F](2) (Ar-F = 4-C6H4F (1), 2-C6H4F (2), 3,5-C6H3F2 (3), 2,3,4,5-C6HF4 (4), 2,3,5,6-C6HF4 (5) and C6F5 (6)) have been prepared by treatment of the appropriate fluoroaniline with AlMe3 in toluene solution at 25degreesC. The structures of 1 6 were determined by X-ray crystallography. C1 Univ Texas, Dept Chem & Biochem, Austin, TX 78712 USA. Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA. RP Cowley, AH (reprint author), Univ Texas, Dept Chem & Biochem, Austin, TX 78712 USA. EM cowley@mail.utexas.edu RI Scott, Brian/D-8995-2017 OI Scott, Brian/0000-0003-0468-5396 NR 27 TC 9 Z9 9 U1 1 U2 3 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1477-9226 J9 DALTON T JI Dalton Trans. PY 2005 IS 6 BP 1019 EP 1022 DI 10.1039/b417652a PG 4 WC Chemistry, Inorganic & Nuclear SC Chemistry GA 901LS UT WOS:000227284600002 PM 15739002 ER PT J AU Long, DL Kogerler, P Farrugia, LJ Cronin, L AF Long, DL Kogerler, P Farrugia, LJ Cronin, L TI Reactions of a {Mo-16}-type polyoxometalate cluster with electrophiles: a synthetic, theoretical and magnetic investigation SO DALTON TRANSACTIONS LA English DT Article ID DOT-S INTERACTIONS; BUILDING-BLOCKS; POLYOXOMOLYBDATES; CHEMISTRY; KEPLERATE; TOPOLOGY; SYMMETRY; CATIONS; KEGGIN; IONS AB A medium-nuclearity mixed-valence polyoxomolybdate [H2Mo16O52](10-) = {Mo-16} (1a) was synthesized using an approach that employed protonated hexamethylenetetramine (HMTAH(+)) as counter ion and yielded (HMTAH)(10) 1a.34 H2O(1). The {Mo-16} cluster anion exhibits significant nucleophilicity and traps electrophiles such as divalent transition metal ions, resulting in a family of isostructural compounds based on {Mo16M2}-type anions [M(H2O)(8)H-2 Mo16O52](6-) (M = Fe-II (2), Mn-II (3), Co-II (4)). The highly reactive nature of the {Mo-16} system is also revealed by rearrangement and decomposition reactions of 1 to either slowly form a sodium-bridged heptamolybdate-based chain compound (5) when left in the reaction solution or, in the presence of very high concentrations of electrophiles, to heptamolybdate-based cluster compounds [M-2(H2O)(9)Mo7O24](2-) of the {M2Mo7}-type (M = Fe-II (6), Mn-II (7)). Compounds 1-7 were characterised by single crystal X-ray diffraction, elemental analysis, IR spectroscopy, magnetic susceptibility measurements, and density functional theory calculations. C1 Univ Glasgow, Dept Chem, Glasgow G12 8QQ, Lanark, Scotland. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. RP Cronin, L (reprint author), Univ Glasgow, Dept Chem, Glasgow G12 8QQ, Lanark, Scotland. EM L.Cronin@chem.gla.ac.uk RI Cronin, Leroy/B-7752-2008; Long, Deliang/C-3500-2011; Kogerler, Paul/H-5866-2013 OI Cronin, Leroy/0000-0001-8035-5757; Kogerler, Paul/0000-0001-7831-3953 NR 35 TC 43 Z9 43 U1 1 U2 12 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1477-9226 J9 DALTON T JI Dalton Trans. PY 2005 IS 8 BP 1372 EP 1380 DI 10.1039/b419301f PG 9 WC Chemistry, Inorganic & Nuclear SC Chemistry GA 915HS UT WOS:000228289500007 PM 15824774 ER PT J AU Cui, C Shafir, A Schmidt, JAR Oliver, AG Arnold, J AF Cui, C Shafir, A Schmidt, JAR Oliver, AG Arnold, J TI Synthesis and characterization of mono beta-diketiminatosamarium amides and hydrocarbyls SO DALTON TRANSACTIONS LA English DT Article ID ALPHA-HYDROGEN ABSTRACTION; RAY CRYSTAL-STRUCTURES; LANTHANIDE CHLORIDES; CRYSTALLOGRAPHIC CHARACTERIZATION; STRUCTURAL-CHARACTERIZATION; COMPLEXES; CHEMISTRY; LIGANDS; METAL; POLYMERIZATION AB Reaction of SmCl3 with 1 eq of KL (L = [DippNC(Me)CHC(Me)NDipp]; Dipp = 2,6-i-Pr2C6H3) in THF afforded the dimeric samarium dichloride LSmCl2(THF)Cl2SmL (1) in high yield. Reactions of 1 with NaN(SiMe3)(2), KNHAr (Ar = 2,4,6-t-Bu3C6H2), KBHEt3, and KCp* (Cp* = C5Me5) yielded various new complexes: LSmClN(SiMe3)(2) (2), LSm[N(SiMe3)(2)](2) (3), LSmNHAr(HBEt3) (4), LSm(NHAr)(2) (5), and LSmCp*Cl (6). Reaction of 1 with one eq of NaN(SiMe3)(2) followed by treatment with excess AlMe3 afforded a unique bimetallic samarium tetramer Cl3L2Sm2(AlMe4)(2)Sm2L2Cl3 (7). Reaction of 6 with LiMe or LiCH2SiMe3 afforded LSmCp*Me (8) and LSmCp*CH2SiMe3 (9) in excellent yield. Methyl abstraction from 8 with B(C6F5)(3) in toluene yielded the cationic borate species (LSmCp*)[MeB(C6F5)(3)] (10). Molecular structures of 1-7 and 9 were determined by X-ray single crystal analysis. C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Arnold, J (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. RI Shafir, Alexandr/D-1676-2009; Arnold, John/F-3963-2012 OI Shafir, Alexandr/0000-0002-8127-2299; Arnold, John/0000-0001-9671-227X NR 48 TC 38 Z9 38 U1 3 U2 9 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1477-9226 J9 DALTON T JI Dalton Trans. PY 2005 IS 8 BP 1387 EP 1393 DI 10.1039/b501437a PG 7 WC Chemistry, Inorganic & Nuclear SC Chemistry GA 915HS UT WOS:000228289500009 PM 15824776 ER PT J AU Chandrasekhar, V Nagarajan, L Gopal, K Baskar, V Kogerler, P AF Chandrasekhar, V Nagarajan, L Gopal, K Baskar, V Kogerler, P TI A new structural form for a decanuclear copper(II) assembly SO DALTON TRANSACTIONS LA English DT Article ID SINGLE-MOLECULE MAGNETS; PHOSPHONATE LIGANDS; PYRAZOLE LIGANDS; CAGE COMPLEXES; OXYGEN-DONOR; CLUSTER; CARBOXYLATE; PHOSPHATE; METALS AB The synthesis and structure of a novel decanuclear copper(II) cage is reported. The assembly of the cage is facilitated by the cumulative coordinative interaction of tert-butyl phosphonate, 2-pyridylpyrazole and hydroxide ligands with copper( II) ions. Magnetic studies of this decanuclear copper( II) cage indicate complex antiferromagnetic behaviour. C1 Indian Inst Technol, Dept Chem, Kanpur 208016, Uttar Pradesh, India. Iowa State Univ, Dept Phys & Astron, Ames Lab, Ames, IA 50011 USA. RP Chandrasekhar, V (reprint author), Indian Inst Technol, Dept Chem, Kanpur 208016, Uttar Pradesh, India. EM vc@iitk.ac.in RI Kogerler, Paul/H-5866-2013; OI Kogerler, Paul/0000-0001-7831-3953; Viswanathan, Baskar/0000-0002-5270-3272 NR 35 TC 51 Z9 51 U1 1 U2 9 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1477-9226 J9 DALTON T JI Dalton Trans. PY 2005 IS 19 BP 3143 EP 3145 DI 10.1039/b510145j PG 3 WC Chemistry, Inorganic & Nuclear SC Chemistry GA 965VT UT WOS:000231979300004 PM 16172636 ER PT J AU Field, SJ Thornton, NP Anderson, LJ Gates, AJ Reilly, A Jepson, BJN Richardson, DJ George, SJ Cheesman, MR Butt, JN AF Field, SJ Thornton, NP Anderson, LJ Gates, AJ Reilly, A Jepson, BJN Richardson, DJ George, SJ Cheesman, MR Butt, JN TI Reductive activation of nitrate reductases SO DALTON TRANSACTIONS LA English DT Article; Proceedings Paper CT 8th Dalton Discussion Meeting CY SEP 07-09, 2005 CL Univ Nottingham, Nottingham, ENGLAND HO Univ Nottingham ID ELECTRON-PARAMAGNETIC-RESONANCE; LIVER SULFITE OXIDASE; MOLYBDENUM CENTER; ESEEM SPECTROSCOPY; ESCHERICHIA-COLI; TRANSFER RATES; HIGH PH; COORDINATION; COMPLEXES; REVEALS AB Protein film voltammetry of Paracoccus pantotrophus respiratory nitrate reductase (NarGH) and Synechococcus elongatus assimilatory nitrate reductase (NarB) shows that reductive activation of these enzymes may be required before steady state catalysis is observed. For NarGH complementary spectroscopic studies suggest a structural context for the activation. Catalytic protein film voltammetry at a range of temperatures has allowed quantitation of the activation energies for nitrate reduction. For NarGH with an operating potential of ca. 0.05 V the activation energy of ca. 35 kJ mol(-1) is over twice that measured for NarB whose operating potential is ca. - 0.35 V. C1 Univ E Anglia, Sch Chem Sci & Pharm, Ctr Met Prot Spect & Biol, Norwich NR4 7TJ, Norfolk, England. Univ E Anglia, Sch Biol Sci, Ctr Met Prot Spect & Biol, Norwich NR4 7TJ, Norfolk, England. Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA. RP Butt, JN (reprint author), Univ E Anglia, Sch Chem Sci & Pharm, Ctr Met Prot Spect & Biol, Norwich NR4 7TJ, Norfolk, England. EM j.butt@uea.ac.uk RI Richardson, David/E-2275-2011; Gates, Andrew/F-8218-2011; Butt, Julea/E-2133-2011; Richardson, David/N-5129-2014 OI Gates, Andrew/0000-0002-4594-5038; Butt, Julea/0000-0002-9624-5226; Richardson, David/0000-0002-7751-1058 NR 25 TC 20 Z9 20 U1 0 U2 3 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1477-9226 J9 DALTON T JI Dalton Trans. PY 2005 IS 21 BP 3580 EP 3586 DI 10.1039/b505530j PG 7 WC Chemistry, Inorganic & Nuclear SC Chemistry GA 975IX UT WOS:000232655300029 PM 16234941 ER PT S AU Peairs, DM Park, G Inman, DJ AF Peairs, DM Park, G Inman, DJ BE Ostachowicz, WM DulieuBarton, JM Holford, KM Krawczuk, M Zak, A TI Simplified modeling for impedance-based health monitoring SO DAMAGE ASSESSMENT OF STRUCTURES VI SE Key Engineering Materials LA English DT Article; Proceedings Paper CT 6th International Conference on Damage Assessment of Structures (DAMAS 2005) CY JUL 04-06, 2005 CL Gdansk, POLAND SP Polish Acad Sci, Inst Fluid-Flow Mach, Inst Phys Stress & Vibrat Grp, USAF, European Off Aerosp Res & Dev DE impedance method; high frequency modeling; spectral element method; piezoelectric ID PIEZOELECTRIC ACTUATORS; SENSORS; BEAM AB A new model of impedance-based structural health monitoring (SHM) using the spectral element method (SEM) and electric circuit analysis has been developed. This model provides additional information for more accurately identifying and locating damage and in designing the SHM system. Complex functions of the SHM system such as estimation of remaining life are also made possible with the use of the model. The circuit analysis can be applied to any type of structural model. However, since impedance-based SHM relies on high frequency excitation of the structure using piezoelectric patches, finite element modeling may not be applicable and instead the spectral element method (SEM) is used. SEM more accurately models higher frequency vibrations since the mass is modeled "exactly" and incorporates higher order models more easily. Model and experimental results are presented for damaged and undamaged specimens. C1 Virginia Polytech Inst & State Univ, Ctr Intelligent Mat Syst & Struct, Blacksburg, VA 24061 USA. Los Alamos Natl Lab, Engn Sci & Applicat Div, Los Alamos, NM 87545 USA. Virginia Polytech Inst & State Univ, Ctr Intelligent Mat Syst & Struct, Blacksburg, VA 24061 USA. RP Virginia Polytech Inst & State Univ, Ctr Intelligent Mat Syst & Struct, 310 Durham Hall,MC 0261, Blacksburg, VA 24061 USA. EM dpeairs@vt.edu; gpark@lanl.gov; dinman@vt.edu NR 28 TC 1 Z9 1 U1 0 U2 2 PU TRANS TECH PUBLICATIONS LTD PI DURNTEN-ZURICH PA KREUZSTRASSE 10, 8635 DURNTEN-ZURICH, SWITZERLAND SN 1013-9826 BN 0-87849-976-8 J9 KEY ENG MATER PY 2005 VL 293-294 BP 643 EP 650 PG 8 WC Engineering, Mechanical; Materials Science, Ceramics; Materials Science, Characterization & Testing; Materials Science, Composites SC Engineering; Materials Science GA BCS11 UT WOS:000230988800074 ER PT J AU Farrar, CR Lieven, NAJ Bement, MT AF Farrar, Charles R. Lieven, Nick A. J. Bement, Matthew T. BE Inman, DJ Farrar, CR Lopes, V Steffen, V TI An Introduction to Damage Prognosis SO DAMAGE PROGNOSIS: FOR AEROSPACE, CIVIL AND MECHANICAL SYSTEMS LA English DT Editorial Material; Book Chapter C1 [Farrar, Charles R.; Bement, Matthew T.] Los Alamos Natl Lab, ESA WR, Los Alamos, NM 87545 USA. [Lieven, Nick A. J.] Univ Bristol, Dept Aerosp Engn, Bristol BS8 1TR, Avon, England. RP Farrar, CR (reprint author), Los Alamos Natl Lab, ESA WR, Mail Stop T001, Los Alamos, NM 87545 USA. NR 8 TC 21 Z9 21 U1 0 U2 0 PU BLACKWELL SCIENCE PUBL PI OXFORD PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND BN 978-0-47086-909-3 PY 2005 BP 1 EP 12 DI 10.1002/0470869097.ch1 D2 10.1002/0470869097 PG 12 WC Engineering, Aerospace; Engineering, Civil SC Engineering GA BYD64 UT WOS:000298111500002 ER PT J AU Williams, TO Beyerlein, IJ AF Williams, Todd O. Beyerlein, Irene J. BE Inman, DJ Farrar, CR Lopes, V Steffen, V TI An Overview of Modeling Damage Evolution in Materials SO DAMAGE PROGNOSIS: FOR AEROSPACE, CIVIL AND MECHANICAL SYSTEMS LA English DT Article; Book Chapter ID FIBRE-STRENGTHENED MATERIALS; FIBER-REINFORCED COMPOSITES; SINGLE-FILAMENT COMPOSITE; BUNDLES PROBABILITY MODEL; MECHANICAL-PROPERTIES; WEIBULL FIBERS; SHEAR-LAG; MICROMECHANICAL ANALYSIS; VISCOELASTIC MATRICES; STRESS-CONCENTRATIONS C1 [Williams, Todd O.; Beyerlein, Irene J.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Williams, TO (reprint author), Los Alamos Natl Lab, Div Theoret, T-3,Mail Stop B216, Los Alamos, NM 87545 USA. NR 87 TC 0 Z9 0 U1 0 U2 0 PU BLACKWELL SCIENCE PUBL PI OXFORD PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND BN 978-0-47086-909-3 PY 2005 BP 15 EP 59 D2 10.1002/0470869097 PG 45 WC Engineering, Aerospace; Engineering, Civil SC Engineering GA BYD64 UT WOS:000298111500003 ER PT J AU Inman, DJ Farrar, CR Lopes, V Steffen, V AF Inman, D. J. Farrar, C. R. Lopes, V., Jr. Steffen, V., Jr. BE Inman, DJ Farrar, CR Lopes, V Steffen, V TI Damage Prognosis For Aerospace, Civil and Mechanical Systems Preface SO DAMAGE PROGNOSIS: FOR AEROSPACE, CIVIL AND MECHANICAL SYSTEMS LA English DT Editorial Material; Book Chapter C1 [Inman, D. J.] Virginia Polytech Inst & State Univ, Ctr Intelligent Mat Syst & Struct, Blacksburg, VA 24061 USA. [Farrar, C. R.] Los Alamos Natl Lab, ESA WR, Los Alamos, NM 87545 USA. [Lopes, V., Jr.] Univ Estadual Paulista, BR-15385000 Ilha Solteira, SP, Brazil. [Steffen, V., Jr.] Univ Fed Uberlandia, Sch Mech Engn, BR-38400902 Uberlandia, MG, Brazil. RP Inman, DJ (reprint author), Virginia Polytech Inst & State Univ, Ctr Intelligent Mat Syst & Struct, 310 Durham Hall,Mail Code 0261, Blacksburg, VA 24061 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU BLACKWELL SCIENCE PUBL PI OXFORD PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND BN 978-0-47086-909-3 PY 2005 BP XVIII EP XIX D2 10.1002/0470869097 PG 2 WC Engineering, Aerospace; Engineering, Civil SC Engineering GA BYD64 UT WOS:000298111500001 ER PT J AU Hemez, FM AF Hemez, Francois M. BE Inman, DJ Farrar, CR Lopes, V Steffen, V TI Uncertainty Quantification and the Verification and Validation of Computational Models SO DAMAGE PROGNOSIS: FOR AEROSPACE, CIVIL AND MECHANICAL SYSTEMS LA English DT Article; Book Chapter C1 Los Alamos Natl Lab, ESA WR, Los Alamos, NM 87545 USA. RP Hemez, FM (reprint author), Los Alamos Natl Lab, ESA WR, Mail Stop T001, Los Alamos, NM 87545 USA. NR 29 TC 2 Z9 2 U1 0 U2 2 PU BLACKWELL SCIENCE PUBL PI OXFORD PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND BN 978-0-47086-909-3 PY 2005 BP 201 EP 219 DI 10.1002/0470869097.ch9 D2 10.1002/0470869097 PG 19 WC Engineering, Aerospace; Engineering, Civil SC Engineering GA BYD64 UT WOS:000298111500010 ER PT J AU Robertson, A Hemez, FM AF Robertson, Amy Hemez, Francois M. BE Inman, DJ Farrar, CR Lopes, V Steffen, V TI Reliability Methods SO DAMAGE PROGNOSIS: FOR AEROSPACE, CIVIL AND MECHANICAL SYSTEMS LA English DT Article; Book Chapter C1 [Robertson, Amy; Hemez, Francois M.] Los Alamos Natl Lab, ESA WR, Los Alamos, NM 87545 USA. RP Robertson, A (reprint author), Los Alamos Natl Lab, ESA WR, Mail Stop T001, Los Alamos, NM 87545 USA. NR 9 TC 2 Z9 2 U1 0 U2 0 PU BLACKWELL SCIENCE PUBL PI OXFORD PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND BN 978-0-47086-909-3 PY 2005 BP 221 EP 234 DI 10.1002/0470869097.ch10 D2 10.1002/0470869097 PG 14 WC Engineering, Aerospace; Engineering, Civil SC Engineering GA BYD64 UT WOS:000298111500011 ER PT J AU Park, G Inman, DJ AF Park, Gyuhae Inman, Daniel J. BE Inman, DJ Farrar, CR Lopes, V Steffen, V TI Impedance-Based Structural Health Monitoring SO DAMAGE PROGNOSIS: FOR AEROSPACE, CIVIL AND MECHANICAL SYSTEMS LA English DT Article; Book Chapter ID JOINTS C1 [Park, Gyuhae] Los Alamos Natl Lab, ESA WR, Los Alamos, NM 87545 USA. [Inman, Daniel J.] Virginia Polytech Inst & State Univ, Ctr Intelligent Mat Syst & Struct, Blacksburg, VA 24061 USA. RP Park, G (reprint author), Los Alamos Natl Lab, ESA WR, Mail Stop T001, Los Alamos, NM 87545 USA. NR 33 TC 14 Z9 14 U1 0 U2 0 PU BLACKWELL SCIENCE PUBL PI OXFORD PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND BN 978-0-47086-909-3 PY 2005 BP 275 EP 292 DI 10.1002/0470869097.ch13 D2 10.1002/0470869097 PG 18 WC Engineering, Aerospace; Engineering, Civil SC Engineering GA BYD64 UT WOS:000298111500014 ER PT J AU Farrar, CR Cornwell, PJ Hunter, NF Lieven, NAJ AF Farrar, Charles R. Cornwell, Phillip J. Hunter, Norman F. Lieven, Nick A. J. BE Inman, DJ Farrar, CR Lopes, V Steffen, V TI Sensing and Data Acquisition Issues for Damage Prognosis SO DAMAGE PROGNOSIS: FOR AEROSPACE, CIVIL AND MECHANICAL SYSTEMS LA English DT Article; Book Chapter C1 [Farrar, Charles R.; Hunter, Norman F.] Los Alamos Natl Lab, ESA WR, Los Alamos, NM 87545 USA. [Cornwell, Phillip J.] Rose Hulman Inst Technol, Terre Haute, IN 47803 USA. [Lieven, Nick A. J.] Univ Bristol, Dept Aerosp Engn, Bristol BS8 1TR, Avon, England. RP Farrar, CR (reprint author), Los Alamos Natl Lab, ESA WR, Mail Stop T001, Los Alamos, NM 87545 USA. NR 9 TC 1 Z9 1 U1 0 U2 0 PU BLACKWELL SCIENCE PUBL PI OXFORD PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND BN 978-0-47086-909-3 PY 2005 BP 307 EP 321 D2 10.1002/0470869097 PG 15 WC Engineering, Aerospace; Engineering, Civil SC Engineering GA BYD64 UT WOS:000298111500016 ER PT S AU Pon, RK Critchlow, T AF Pon, RK Critchlow, T BE Ludascher, B Raschid, L TI Performance-oriented privacy-preserving data integration SO DATA INTEGRATION IN THE LIFE SCIENCES, PROCEEDINGS SE Lecture Notes in Computer Science LA English DT Article; Proceedings Paper CT 2nd International Workshop on Data International in the Life Sciences CY JUL 20-22, 2005 CL Univ Calif, San Diego, San Diego, CA SP Microsoft Res, San Diego Supercomp Ctr, Amer Med Informat Assoc, Univ Calif, Davis Genome Ctr, Univ Maryland Inst Adv Comp Studies HO Univ Calif, San Diego AB Current solutions to integrating private data with public data have provided useful privacy metrics, such as relative information gain, that can be used to evaluate alternative approaches. Unfortunately, they have not addressed critical performance issues, especially when the public database is very large. The use of hashes and noise yields better performance than existing techniques, while still making it difficult for unauthorized entities to distinguish which data items truly exist in the private database. As we show here, the uncertainty introduced by collisions caused by hashing and the injection of noise can be leveraged to perform a privacy-preserving relational join operation between a massive public table and a relatively smaller private one. C1 Univ Calif Los Angeles, Comp Sci Dept, Los Angeles, CA 90024 USA. Lawrence Livermore Natl Lab, Livermore, CA USA. RP Univ Calif Los Angeles, Comp Sci Dept, Los Angeles, CA 90024 USA. EM rpon@cs.ucla.edu; critchlow@llnl.gov NR 35 TC 2 Z9 2 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 3-540-27967-9 J9 LECT NOTES COMPUT SC PY 2005 VL 3615 BP 240 EP 256 PG 17 WC Biochemical Research Methods; Biology; Computer Science, Information Systems; Computer Science, Interdisciplinary Applications; Computer Science, Theory & Methods SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Computer Science GA BDA44 UT WOS:000232263300019 ER PT S AU Ngu, AHH Buttler, D Critchlow, T AF Ngu, AHH Buttler, D Critchlow, T BE Ludascher, B Raschid, L TI Automatic generation of data types for classification of Deep Web sources SO DATA INTEGRATION IN THE LIFE SCIENCES, PROCEEDINGS SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article; Proceedings Paper CT 2nd International Workshop on Data International in the Life Sciences CY JUL 20-22, 2005 CL Univ Calif, San Diego, San Diego, CA SP Microsoft Res, San Diego Supercomp Ctr, Amer Med Informat Assoc, Univ Calif, Davis Genome Ctr, Univ Maryland Inst Adv Comp Studies HO Univ Calif, San Diego AB A Service Class Description (SCD) is an effective meta-data based approach for discovering Deep Web sources whose data exhibit some regular patterns. However, it is tedious and error prone to create an SCD description manually. Moreover, a manually created SCD is not adaptive to the frequent changes of Web sources. It requires its creator to identify all the possible input and output types of a service a priori. In many domains, it is impossible to exhaustively list all the possible input and output data types of a source in advance. In this paper, we describe machine learning approaches for automatic generation of the data types of an SCD. We propose two different approaches for learning data types of a class of Web sources. The Brute-Force Learner is able to generate data types that can achieve high recall, but with low precision. The Clustering-based Learner generates data types that have a high precision rate, but with a lower recall rate. We demonstrate the feasibility of these two learning-based solutions for automatic generation of data types for citation Web sources and presented a quantitative evaluation of these two solutions. C1 SW Texas State Univ, Dept Comp Sci, San Marcos, TX 78666 USA. Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA 94551 USA. RP Ngu, AHH (reprint author), SW Texas State Univ, Dept Comp Sci, San Marcos, TX 78666 USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 3-540-27967-9 J9 LECT NOTES COMPUT SC PY 2005 VL 3615 BP 266 EP 274 PG 9 WC Biochemical Research Methods; Biology; Computer Science, Information Systems; Computer Science, Interdisciplinary Applications; Computer Science, Theory & Methods SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Computer Science GA BDA44 UT WOS:000232263300021 ER PT S AU Otoo, E Rotem, D Romosan, A Seshadri, S AF Otoo, E Rotem, D Romosan, A Seshadri, S BE Pierson, JM TI File caching in data intensive scientific applications on data-grids SO DATA MANAGEMENT IN GRIDS SE Lecture Notes in Computer Science LA English DT Article; Proceedings Paper CT 1st VLDB Workshop on Data Management in Grids CY SEP 02-03, 2005 CL Trondheim, NORWAY SP VLDB AB We present some theoretical and experimental results of an important caching problem which arises frequently in data intensive scientific applications that are run in data-grids. Such applications often need to process several files simultaneously, i.e., the application runs only if all its needed files are present in some disk cache accessible to the compute resource of the application. The set of files requested by an application, all of which must be in cache for the application to run, is called a file-bundle. This requirement introduces the need for cache replacement algorithms that are based on file-bundles rather then individual files. We show that traditional caching algorithms such as Least Recently Used (LRU) and GreedyDual-Size (GDS) are not optimal in this case since they are not sensitive to file-bundles and may hold in the cache non-relevant combinations of files. We propose and analyze a new cache replacement algorithm specifically adapted to deal with file-bundles. Results of experimental studies of the new algorithm, using a disk cache simulation model under a wide range of conditions such as file request distributions, relative cache size, file size distribution, and incoming job queue size, show significant improvement over traditional caching algorithms such as CDS. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NYU, Leonard N Stern Sch Business, New York, NY 10012 USA. RP Otoo, E (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RI Seshadri, Sridhar/D-6034-2012 NR 11 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 3-540-31212-9 J9 LECT NOTES COMPUT SC PY 2005 VL 3836 BP 85 EP 99 PG 15 WC Computer Science, Theory & Methods SC Computer Science GA BDW05 UT WOS:000235770100008 ER PT S AU Shoshani, A Sim, A Stockinger, K AF Shoshani, A Sim, A Stockinger, K BE Pierson, JM TI RRS: Replica registration service for data grids SO DATA MANAGEMENT IN GRIDS SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article; Proceedings Paper CT 1st VLDB Workshop on Data Management in Grids CY SEP 02-03, 2005 CL Trondheim, NORWAY SP VLDB AB Over the last few years various scientific experiments and Grid projects have developed different catalogs for keeping track of their data files. Some projects use specialized file catalogs, others use distributed replica catalogs to reference files at different locations. Due to this diversity of catalogs, it is very hard to manage files across Grid projects, or to replace one catalog with another. In this paper we introduce a new Grid service called the Replica Registration Service (RRS). It can be thought of as an abstraction of the concepts for registering files and their replicas. In addition to traditional single file registration operations, the RRS supports collective file registration requests and keeps persistent registration queues. This approach is of particular importance for large-scale usage where thousands of files are copied and registered. Moreover, the RRS supports a set of error directives that are triggered in case of registration failures. Our goal is to provide a single uniform interface for various file catalogs to support the registration of files across multiple Grid projects, and to make Grid clients oblivious to the specific catalog used. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Computat Res Div, Berkeley, CA 94720 USA. RP Shoshani, A (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Computat Res Div, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM AShoshani@lbl.gov; ASim@lbl.gov; KStockinger@lbl.gov NR 11 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 3-540-31212-9 J9 LECT NOTES COMPUT SC PY 2005 VL 3836 BP 100 EP 112 PG 13 WC Computer Science, Theory & Methods SC Computer Science GA BDW05 UT WOS:000235770100009 ER PT S AU Cai, DM Theiler, J Gokhale, M AF Cai, DM Theiler, J Gokhale, M BE Dasarathy, BV TI Detecting a malicious executable without prior knowledge of its patterns SO Data Mining, Intrusion Detection, Information Assurance, and Data Networks Security 2005 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Data Mining, Intrusion Detection, Information Assurance and Data Networks Security 2005 CY MAR 28-29, 2005 CL Orlando, FL SP SPIE DE mining high-dimensional data; one-class support vector machine; principal component analysis; malicious executable file; email filtering ID NETWORKS; SUPPORT AB To detect malicious executables, often spread as email attachments, two types of algorithms are usually applied under instance-based statistical learning paradigms: 1) Signature-based template matching, which finds unique tell-tale characteristics of a malicious executable and thus is capable of matching those with known signatures; 2) Two-class supervised learning, which determines a set of features that allow benign and malicious patterns to occupy a disjoint regions in a feature vector space and thus probabilistically identifies malicious executables with the similar features. Nevertheless, given the huge potential variety of malicious executables, we cannot be confident that existing training sets adequately represent the class as a whole. In this study, we investigated the use of byte sequence frequencies to profile only benign data. The malicious executables are identified as outliers or anomalies that significantly deviate from the normal profile. A multivariate Gaussian likelihood model, fit with a Principal Component Analysis (PCA), was compared with a one-class Support Vector Machine (SVM) model for characterizing the benign executables. We found that the Gaussian model substantially outperformed the one-class SVM in its ability to distinguish malicious from benign files. Complementing to the capabilities in reliably detecting those malicious files with known or similar features using two aforementioned methods, the one-class unsupervised approach may provide another layer of safeguard in identifying those novel computer viruses. C1 Los Alamos Natl Lab, Space Data Syst Grp, Los Alamos, NM 87545 USA. RP Cai, DM (reprint author), Los Alamos Natl Lab, Space Data Syst Grp, Los Alamos, NM 87545 USA. NR 23 TC 5 Z9 5 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 0-8194-5797-3 J9 P SOC PHOTO-OPT INS PY 2005 VL 5812 BP 1 EP 12 DI 10.1117/12.603174 PG 12 WC Computer Science, Artificial Intelligence; Computer Science, Information Systems SC Computer Science GA BCK95 UT WOS:000229800000001 ER PT S AU Rotem, D Stockinger, K Wu, KS AF Rotem, D Stockinger, K Wu, KS BE Andersen, KV Debenham, J Wagner, R TI Optimizing I/O costs of multi-dimensional queries using bitmap indices SO DATABASE AND EXPERT SYSTEMS APPLICATIONS, PROCEEDINGS SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article; Proceedings Paper CT 16th International Workshop on Database and Expert Systems Applications CY AUG 22-26, 2005 CL Copenhagen Business Sch, Copenhagen, DENMARK SP Danish Minist Sci, Technol & Innov, DEXA Assoc, Austrian Comp Soc, Res Inst Appl Knowledge Proc, FAW Software Engn GmbH HO Copenhagen Business Sch AB Bitmap indices are efficient data structures for processing complex, multi-dimensional queries in data warehouse applications and scientific data analysis. For high-cardinality attributes, a common approach is to build bitmap, indices with binning. This technique partitions the attribute values into a number of ranges, called bins, and uses bitmap vectors to represent bins (attribute ranges) rather than distinct values. In order to yield exact query answers, parts of the original data values have to be read from disk for checking against the query constraint. This process is referred to as candidate check and usually dominates the total query processing time. In this paper we study several strategies for optimizing the candidate check cost for multi-dimensional queries. We present an efficient candidate check algorithm based on attribute value distribution, query distribution as well as query selectivity with respect to each dimension. We also show that re-ordering the dimensions during query evaluation can be used to reduce I/O costs. We tested our algorithm on data with various attribute value distributions and query distributions. Our approach shows a significant improvement over traditional binning strategies for bitmap indices. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Rotem, D (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM D_Rotem@lbl.gov; KStockinger@lbl.gov; KWu@lbl.gov NR 15 TC 2 Z9 2 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 3-540-28566-0 J9 LECT NOTES COMPUT SC PY 2005 VL 3588 BP 220 EP 229 PG 10 WC Computer Science, Artificial Intelligence; Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA BCY26 UT WOS:000231849800022 ER PT S AU Senecal, JG Lindstrom, P Duchaineau, MA Joy, KI AF Senecal, JG Lindstrom, P Duchaineau, MA Joy, KI BE Storer, JA Cohn, M TI Investigating lossy image coding using the PLHaar transform SO DCC 2005: DATA COMPRESSION CONFERENCE, PROCEEDINGS SE IEEE Data Compression Conference LA English DT Proceedings Paper CT IEEE Data Compression Conference CY MAR 29-31, 2005 CL Snowbird, UT SP IEEE C1 Lawrence Livermore Natl Lab, ISCR, Livermore, CA 94551 USA. RP Lawrence Livermore Natl Lab, ISCR, L-419,POB 808, Livermore, CA 94551 USA. EM senecal1@llnl.gov NR 2 TC 1 Z9 1 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 SN 1068-0314 BN 0-7695-2309-9 J9 IEEE DATA COMPR CONF PY 2005 BP 479 EP 479 PG 1 WC Computer Science, Theory & Methods; Imaging Science & Photographic Technology SC Computer Science; Imaging Science & Photographic Technology GA BCF64 UT WOS:000229070000076 ER PT S AU Dixon, LJ AF Dixon, LJ BE Smith, WH Dasu, SR TI Recent developments in perturbative QCD SO DEEP INELASTIC SCATTERING SE AIP Conference Proceedings LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE perturbative QCD calculations ID HIGGS-BOSON PRODUCTION; INELASTIC STRUCTURE FUNCTIONS; 3-LOOP SPLITTING FUNCTIONS; GAUGE-THEORY AMPLITUDES; ONE-LOOP AMPLITUDES; BJORKEN SUM-RULE; GLUON SCATTERING; CROSS-SECTION; TWISTOR SPACE; MOMENTS AB I review recent progress in perturbative QCD on two fronts: extending next-to-next-to-leading order QCD corrections to a broader range of collider processes, and applying twistor-space methods (and related spinoffs) to computations of multi-parton scattering amplitudes. C1 Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. RP Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. NR 64 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 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 61 EP 72 PG 12 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400006 ER PT S AU Skands, P AF Skands, P BE Smith, WH Dasu, SR TI QCD (&) event generators SO DEEP INELASTIC SCATTERING SE AIP Conference Proceedings LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE DIS05; QCD; hadron collisions; collider phenomenology; event generators; parton showers; underlying event ID SOFT GLUON INTERFERENCE; HADRON COLLIDERS; CROSS-SECTIONS; PARTON SHOWERS; MODEL; SIMULATION; COLLISIONS; JETS; CASCADES; VERSION AB Recent developments in QCD phenomenology have spurred on several improved approaches to Monte Carlo event generation, relative to the post-LEP state of the art. In this brief review, the emphasis is placed on approaches for 1) consistently merging fixed-order matrix element calculations with parton showers, 2) improving the parton shower algorithms themselves, and 3) improving the description of the underlying event in hadron collisions. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Fermilab Natl Accelerator Lab, MS106, Batavia, IL 60510 USA. OI Skands, Peter/0000-0003-0024-3822 NR 70 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 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 73 EP 84 PG 12 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400007 ER PT S AU Vitev, I AF Vitev, I BE Smith, WH Dasu, SR TI Coherent power corrections to structure functions SO Deep Inelastic Scattering SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE power corrections; high twist shadowing AB We calculate and resum a perturbative expansion of nuclear enhanced power corrections to the structure functions measured in deeply inelastic scattering of leptons on a nuclear target. Our results for the Bjorken x-, Q(2)- and A-dependence of nuclear shadowing in F-2(A)(x,Q(2)) and the nuclear modifications to F-L(A) (x, Q(2)), obtained in terms of the QCD factorization approach, are consistent with the existing data. We predict the dynamical final state shadowing in v + A reactions for sea and valence quarks in the structure functions F-2(A)(x, Q(2)) and F-3(A) (x, Q(2)), respectively. In p + A collisions we calculate the centrality and rapidity dependent nuclear suppression of single and double inclusive hadron production at moderate transverse momenta. C1 Los Alamos Natl Lab, Div Theory, Los Alamos, NM 87544 USA. RP Vitev, I (reprint author), Los Alamos Natl Lab, Div Theory, Mail Stop H846, Los Alamos, NM 87544 USA. NR 10 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 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 274 EP 278 PG 5 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400030 ER PT S AU Brodsky, SJ AF Brodsky, SJ BE Smith, WH Dasu, SR TI Novel nuclear effects in QCD: The non-universality of nuclear antishadowing and the implications of hidden color SO Deep Inelastic Scattering SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE quantum chromodynamics; deep inelastic lepton-hadron interactions; nuclear processes ID SCATTERING AB The shadowing and antishadowing of nuclear structure functions in the Gribov-Glauber picture is due to the destructive and constructive interference of amplitudes arising from the multiple-scattering of quarks in the nucleus, respectively. The diffractive contributions to deep inelastic scattering includes Pomeron and Odderon contributions from multi-gluon exchange as well as Reggeon quark-exchange contributions. The coherence of multi-step nuclear processes leads to shadowing and antishadowing of the electromagnetic nuclear structure functions in agreement with measurements. This picture also leads to substantially different antishadowing for charged and neutral current reactions, thus affecting the extraction of the weak-mixing angle theta(W). The fact that Reggeon couplings depend on the quantum numbers of the struck quark implies non-universality of nuclear antishadowing for charged and neutral currents as well as a dependence of antishadowing on the polarization of the beam and target. The implications of hidden color degrees of freedom in the nuclear wavefunction is also briefly discussed. C1 Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. RP Brodsky, SJ (reprint author), Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. NR 10 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 279 EP 282 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400031 ER PT S AU Videbaek, F AF Videbaek, F CA BRAHMS Collaboration BE Smith, WH Dasu, SR TI Rapidity dependence of High-p(T) suppression SO Deep Inelastic Scattering SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE Nuclear Modification Factor; gluon saturation AB The rapidity dependence of nuclear modifications factor in d-Au collisions at root s(NN) 200 GeV at RHIC is discussed. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Videbaek, F (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. 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 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 283 EP 286 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400032 ER PT S AU Zhang, C AF Zhang, C CA PHENIX Collaborat BE Smith, WH Dasu, SR TI Nuclear modification factors for hadrons at forward and backward rapidities in deuteron-gold collisions at root(NN)-N-S=200 GeV SO DEEP INELASTIC SCATTERING SE AIP Conference Proceedings LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE hadron; rapidity; nuclear modification AB We report on charged hadron production in deuteron-gold reactions at root s(NN) = 200 GeV. Our measurements in the deuteron-direction cover 1.4 < eta < 2.2, referred to as forward rapidity, and in the gold-direction -2.0 < eta < -1.4, referred to as backward rapidity, and a transverse momentum range p(T) = 0.5 - 4.0 GeV/c. We compare the relative yields for different deuteron-gold collision centrality classes. We observe a suppression relative to binary collision scaling at forward rapidity, sensitive to low momentum fraction (x) partons in the gold nucleus, and an enhancement at backward rapidity, sensitive to high momentum fraction partons in the gold nucleus. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Zhang, C (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. 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 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 287 EP 290 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400033 ER PT S AU Enberg, R AF Enberg, R BE Smith, WH Dasu, SR TI Saturation, traveling waves and fluctuations SO Deep Inelastic Scattering SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE Saturation; high energy scattering; stochastic processes ID HIGH-ENERGY SCATTERING; EVOLUTION AB In this talk I discuss the high energy asymptotics of QCD scattering, and its similarity to a reaction-diffusion process. I also discuss detailed numerical studies of the mean field approximation to this picture, i.e., the Balitsky-Kovchekov equation. C1 Lawrence Berkeley Natl Lab, Theoret Phys Grp, Berkeley, CA 94720 USA. RP Enberg, R (reprint author), Lawrence Berkeley Natl Lab, Theoret Phys Grp, Berkeley, CA 94720 USA. OI Enberg, Rikard/0000-0003-0452-0671 NR 18 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 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 307 EP 310 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400038 ER PT S AU Stasto, AM AF Stasto, AM BE Smith, WH Dasu, SR TI Nonlinear evolution equations in QCD and effective Hamiltonian at high energy SO Deep Inelastic Scattering SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE small x; Pomeron; high gluon density; JIMWLK equation AB In this talk I briefly present recent developments in the theory of the Color Glass Condensate. The duality between the dense and dilute regimes of the gluon field is discussed as well as the effective selfdual Hamiltonian which includes both Pomeron merging and Pomeron splitting. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Stasto, AM (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. 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 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 311 EP 314 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400039 ER PT S AU Tuchin, K AF Tuchin, K BE Smith, WH Dasu, SR TI Development of chaos in the color glass condensate SO Deep Inelastic Scattering SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE small-x; evolution equation; chaos ID BFKL EQUATION; LARGE NUCLEUS; FIELD AB Noting that the number of gluons in the hadron wave function is discrete, and their formation in the chain of small x evolution occurs over discrete rapidity intervals of Delta y similar or equal to 1 alpha(s), we formulate the discrete version of the Balitsky-Kovchegov evolution equation and show that its solution behaves chaotically in the phenomenologically interesting kinematic region. C1 Brookhaven Natl Lab, Dept Phys, Nucl Theory Grp, Upton, NY 11973 USA. RP Tuchin, K (reprint author), Brookhaven Natl Lab, Dept Phys, Nucl Theory Grp, Upton, NY 11973 USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 319 EP 323 PG 5 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400041 ER PT S AU Chlebana, F AF Chlebana, F BE Smith, WH Dasu, SR TI Tevatron measurements and PDF uncertainties SO Deep Inelastic Scattering SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE QCD; parton distributions; hadronic colliders AB The impact of PDF uncertainties on recent Tevatron measurements is explored. One of the most poorly constrained PDFs is the gluon distribution which is seen to be the dominant source of uncertainty for many interesting calculations. Tevatron measurements that can be used to better constrain PDFs are highlighted. Recent techniques to quantify the error on measured distributions resulting from PDF uncertainties are discussed. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60150 USA. RP Chlebana, F (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60150 USA. 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 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 380 EP 383 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400055 ER PT S AU Albrow, MG AF Albrow, MG BE Smith, WH Dasu, SR TI Double Pomeron physics at the LHC SO DEEP INELASTIC SCATTERING SE AIP Conference Proceedings LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE Double Pomeron; central exclusive production; diffractive Higgs ID DIFFRACTIVE PROCESSES; EXCHANGE; TEVATRON; SEARCH; ISR AB I discuss central exclusive production, also known as Double Pomeron Exchange,DYE, from the ISR through the Tevatron to the LHC. There I emphasize the interest of exclusive Higgs and W+W-/ZZ production. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Albrow, MG (reprint author), Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. 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 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 509 EP 514 PG 6 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400083 ER PT S AU Brodsky, SJ AF Brodsky, SJ BE Smith, WH Dasu, SR TI Hard diffraction in QCD SO Deep Inelastic Scattering SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE quantum chromodynamics; deep inelastic lepton-hadron interactions; diffractive processes ID DEEP-INELASTIC SCATTERING; SINGLE-SPIN ASYMMETRIES; FINAL-STATE INTERACTIONS; QUANTUM CHROMODYNAMICS; EXCLUSIVE PROCESSES; WAVE-FUNCTION; DRELL-YAN; NUCLEI; MESONS AB Gluon exchange between the outgoing quarks and the target spectators affects the structure functions measured in deep inelastic scattering in a profound way, leading to diffractive lepto-production processes, the shadowing and antishadowing of nuclear structure functions, and target spin asymmetries-leading-twist physics not incorporated in the light-front wavefunctions of the target computed in isolation. I also discuss the diffraction dissociation of hadrons into jets as a tool for resolving fundamental hadron substructure. C1 Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. RP Brodsky, SJ (reprint author), Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. NR 26 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 519 EP 522 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400085 ER PT S AU Guryn, W AF Guryn, W CA pp2pp collaborat BE Smith, WH Dasu, SR TI A(N) measurement in the CNI region, at root s=200GeV in polarized pp elastic scattering SO Deep Inelastic Scattering SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE polarization; elastic scattering AB We describe the first measurement of the single spin analysing power (A(N)) at root s = 200 GeV in the four momentum transfer t range 0.01 <= vertical bar t vertical bar < 0.03 (GeV/c)(2), obtained by the pp2pp experiment using polarized proton beams at the Relativistic Heavy Ion Collider (RHIC). The results presented are preliminary. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Guryn, W (reprint author), Brookhaven Natl Lab, Upton, NY 11973 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 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 523 EP 526 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400086 ER PT S AU White, SN AF White, SN BE Smith, WH Dasu, SR TI Diffraction dissociation - 50 years later SO Deep Inelastic Scattering SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE RHIC; ATLAS; heavy-ion ID BEAM PARTICLES AB The field of Diffraction Dissociation, which is the subject of this workshop, began 50 years ago with the analysis of deuteron stripping in low energy collisions with nuclei. We return to the subject in a modern context-deuteron dissociation in root s(NN) = 200 GeV d-Au collisions recorded during the 2003 RHIC run in the PHENIX experiment. At RHIC energy, d -> n+p proceeds predominantly (90%) through Electromagnetic Dissociation and the remaining fraction via the hadronic shadowing described by Glauber. Since the dissociation cross section has a small theoretical error we adopt this process to normalize other cross sections measured in RHIC. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP White, SN (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 14 TC 12 Z9 12 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 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 527 EP 531 PG 5 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400087 ER PT S AU Klein, SR AF Klein, SR CA STAR Collaboration BE Smith, WH Dasu, SR TI Photoproduction at hadron colliders SO Deep Inelastic Scattering SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE photoproduction; p(0); ultra-peripheral collisions ID HEAVY-ION COLLISIONS AB Photoproduction can be studied at hadron colliders by using the virtual photons associated with the hadron beams. The LHC will reach photonucleon energies 10 times higher than that available elsewhere. These reactions are already being studied at RHIC. After introducing photoproduction at hadron colliders, I will discuss recent results from STAR on p(0),pi(+)pi(-)pi(+)pi(-) and e(+)e(-) production. C1 Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Klein, SR (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. NR 19 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 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 532 EP 535 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400088 ER PT S AU Illingworth, R AF Illingworth, R CA CDF DO collaborations BE Smith, WH Dasu, SR TI Searches at the Tevatron SO Deep Inelastic Scattering SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE new phenomena; beyond the Standard Model AB The CDF and DO collider experiments at Fermilab have searched for evidence of physics beyond the Standard Model of particle physics. We report on the results of searches for extra heavy gauge bosons, quark-lepton compositeness, leptoquarks, and magnetic monopoles in pp collisions at root s = 1.96 TeV. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Illingworth, R (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 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 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 639 EP 642 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400114 ER PT S AU Awes, TC AF Awes, TC CA PHENIX Collaboration BE Smith, WH Dasu, SR TI Production of direct photons, pi(0,)s, and eta's in p+p and Au+Au collisions at RHIC SO DEEP INELASTIC SCATTERING SE AIP Conference Proceedings LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE pion production; direct photons; heavy ions; nuclear effects; quark gluon plasma ID HEAVY-ION COLLISIONS AB The PHENIX experiment at RHIC has measured neutral pion, eta, and direct photon production in root s(NN) = 200 GeV p+p and Au+Au collisions. The neutral pion and direct photon yields in p+p collisions are well described by NLO pQCD predictions. In Au+Au collisions the neutral pion yield is suppressed as compared to expectations from p+p collisions, with a suppression which increases with increasing nuclear overlap. However, the direct photon yield shows no centrality dependent suppression, indicating that the pion suppression is due to a final state effect, such as parton energy loss in the excited final state. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Awes, TC (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. NR 15 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 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 792 EP 795 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400151 ER PT S AU Read, KF AF Read, KF CA PHENIX Collaboration BE Smith, WH Dasu, SR TI Measurements of charm and charmonium production by PHENIX SO Deep Inelastic Scattering SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE charm; charmonium; heavy ions ID COLLISIONS AB The PHENIX Experiment at RHIC has measured charmonium production using dileptons and open heavy flavor production via semileptonic decays in p + p, d + Au, and Au + Au collisions at root S-NN = 200 GeV. A nuclear dependence affecting J/psi production in d + Au collisions is observed. For electrons from heavy flavor decay in Au + Au collisions, the transverse momentum spectrum is observed to be strongly modified compared to scaled results from p + p collisions. An initial measurement of the azimuthal anisotropy parameter, v(2), for such electrons is reported. C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RP Read, KF (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. NR 8 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 839 EP 842 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400162 ER PT S AU Kretzer, S Olness, FI AF Kretzer, S Olness, FI BE Smith, WH Dasu, SR TI Heavy quark parton distribution functions SO Deep Inelastic Scattering SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison ID UNCERTAINTIES; PREDICTIONS; ERRORS AB We present the CTEQ6HQ parton distribution set which is determined in the general variable flavor number scheme which incorporates heavy flavor mass effects; hence, this set provides advantages for precision observables which are sensitive to charm and bottom quark masses. We describe the analysis procedure, examine the predominant features of the new distributions, and compare with previous distributions. We also examine the uncertainties of the strange quark distribution and how the the recent NuTeV dimuon data constrains this quantity. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Kretzer, S (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. NR 10 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 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 843 EP 846 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400163 ER PT S AU Avakian, H Bosted, P Burkert, V Elouadrhiri, L AF Avakian, H Bosted, P Burkert, V Elouadrhiri, L CA CLAS Collaboration BE Smith, WH Dasu, SR TI New results on SIDIS SSA from Jefferson Lab SO Deep Inelastic Scattering SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE quarks; single spin asymmetries; TMD parton distributions ID SINGLE-SPIN ASYMMETRIES; DRELL-YAN PROCESSES; FINAL-STATE INTERACTIONS; PARTON DISTRIBUTIONS; TRANSVERSE-MOMENTUM; POLARIZED NUCLEONS; ELECTROPRODUCTION; OBSERVABLES; SCATTERING; PROTON AB We present studies of single-spin and double-spin asymmetries in semi-inclusive electroproduction of pions using the CEBAF 6 GeV polarized electron beam. Kinematic dependences of single and double spin asymmetries have been measured in a wide kinematic range at CLAS with a polarized NH3 target. Significant target-spin sin 2 phi and sin phi asymmetries have been observed. The hypothesis of factorization has been tested with z-dependence of the double spin asymmetry. C1 Jefferson Lab, Newport News, VA 23606 USA. RP Avakian, H (reprint author), Jefferson Lab, Newport News, VA 23606 USA. NR 25 TC 38 Z9 38 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 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 945 EP 948 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400188 ER PT S AU Chen, JP AF Chen, JP BE Smith, WH Dasu, SR TI Latest results on g(1) and g(2) at high x SO Deep Inelastic Scattering SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE spin structure; high x; higher twist; JLab ID PARTON DISTRIBUTIONS; QUARK AB Recent progress from Jefferson Lab has significantly improved our understanding of the nucleon spin structure in the high-x region. Results of a precision measurement of the neutron spin asymmetry, A(1)(n), in the high-x (valence quark) region are discussed. The up and down quark spin distributions in the nucleon were extracted. A(2)(n) was also measured. The results were used, in combination with existing data, to extract the second moment, d(2)(n). Preliminary results on A(1)(p) and A(1)(d) in the high-x region have also become available. Finally, the results of a precision measurement of the g(2) structure function to study higher twist effects will be presented. C1 Jefferson Lab, Newport News, VA 23606 USA. RP Chen, JP (reprint author), Jefferson Lab, Newport News, VA 23606 USA. 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 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 961 EP 964 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400192 ER PT S AU Deur, A AF Deur, A BE Smith, WH Dasu, SR TI Jefferson Lab's results on the Q(2)-evolution of moments of spin structure functions SO DEEP INELASTIC SCATTERING SE AIP Conference Proceedings LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE nucleon spin structure; moment; sum rule; higher twists; polarizability ID SUM-RULE; MAGNETIC MOMENTS; PROTON; ELECTROPRODUCTION; DEUTERON; NEUTRON AB We present the recent JLab measurements on moments of spin structure functions at intermediate and low Q(2). The Bjorken sum and Burkhardt-Cottingham sum on the neutron are presented. The later appears to hold. Higher moments (generalized spin polarizabilities and d(2)(n) are shown and compared to chiral perturbation theory and lattice QCD respectively. C1 Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. RP Deur, A (reprint author), Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. NR 29 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 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 969 EP 972 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400194 ER PT S AU Yuan, F AF Yuan, F BE Smith, WH Dasu, SR TI QCD factorization for semi-inclusive deep inelastic scattering SO Deep Inelastic Scattering SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison ID FINAL-STATE INTERACTIONS; TO-BACK JETS; DRELL-YAN; PARTON DISTRIBUTIONS; TRANSVERSE-MOMENTUM; SPIN ASYMMETRIES; GAUGE AB In this talk, we will present a QCD factorization theorem for the semi-inclusive deep-inelastic scattering with hadrons in the current fragmentation region detected at low transverse momentum. C1 Brookhaven Natl Lab, RIKEN, BNL Res Ctr, Upton, NY 11973 USA. RP Yuan, F (reprint author), Brookhaven Natl Lab, RIKEN, BNL Res Ctr, Bldg 510A, Upton, NY 11973 USA. RI Yuan, Feng/N-4175-2013 NR 16 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 973 EP 976 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400195 ER PT S AU Brodsky, SJ AF Brodsky, SJ BE Smith, WH Dasu, SR TI Large x physics SO DEEP INELASTIC SCATTERING SE AIP Conference Proceedings LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE quantum chromodynamics; deep inelastic lepton-hadron interactions ID INTRINSIC CHARM; QUARK; HADROPRODUCTION; DISTRIBUTIONS; FACTORIZATION; HADRON AB The large x(bj) domain of deep inelastic lepton-proton scattering provides essential information on the structure of the proton when the struck quark is far off-shell and one must take into account inter-quark correlations, higher twist effects, and the breakdown of standard DGLAP evolution. I briefly review predictions from PQCD and AdS/CFr. I also discuss how intrinsic heavy quark Fock states lead to novel production mechanisms for heavy hadrons. C1 Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. RP Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. NR 17 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 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 977 EP 980 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400196 ER PT S AU Videbaek, F AF Videbaek, F CA BRAHMS collaboration BE Smith, WH Dasu, SR TI Single spin asymmetries in the BRAHMS experiment SO Deep Inelastic Scattering SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE polarized protons; single spin asymmetries AB The BRAHMS experiment at RHIC has the capability to measure the transverese spin asymmetries in polarized pp induced pion production at RHIC. The first results from a short run show a signaificant asymmetry for pi(+) and pi(-) at moderate x(F). The trend of the data is in agreement with lower energy data while the absolute value are surprisingly large. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Videbaek, F (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. NR 6 TC 18 Z9 18 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 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 993 EP 996 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400200 ER PT S AU Cadman, RV AF Cadman, RV CA STAR Collaboration BE Smith, WH Dasu, SR TI The longitudinal spin program at STAR SO Deep Inelastic Scattering SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE polarization; nucleon spin structure; RHIC spin; calorimeters ID ELECTROMAGNETIC CALORIMETER AB The STAR Collaboration has nearly completed installation of electromagnetic calorimetry covering the full azimuth and pseudorapidity range -1 < eta < 2. These calorimeters are essential for the STAR spin program, which requires efficient triggers for high-p(T) jets, mesons, and photons. The results of this program will constrain Delta g, the gluon contribution to the proton spin. C1 Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA. RP Cadman, RV (reprint author), Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 1007 EP 1010 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400203 ER PT S AU Xie, W AF Xie, W BE Smith, WH Dasu, SR TI Study quark and antiquark contribution to proton spin structure at RHIC SO Deep Inelastic Scattering SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE spin; RHIC; PHENIX; STAR; quark; upgrade; W boson; asymmetry; trigger; tracking; lepton ID NUCLEON; SCATTERING; ASYMMETRY; PHYSICS AB Relativistic Heavy Ion Collider (RHIC) provides a unique opportunity for the direct measurement of quark and antiquark spin in proton utilizing the parity-violating feature of W boson production. Through probing the decay leptons from W bosons in the central and forward rapidity region, RHIC can dissociate contributions from different flavors of quarks to the proton spin with very high accuracy. The capabilities of the spin flavor dissociation at RHIC with current detector configuration and future upgrades are described. C1 Brookhaven Natl Lab, Riken BNL Res Ctr, Upton, NY 11973 USA. RP Xie, W (reprint author), Brookhaven Natl Lab, Riken BNL Res Ctr, Upton, NY 11973 USA. NR 10 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 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 1029 EP 1034 PG 6 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400208 ER PT S AU Chudakov, E AF Chudakov, E BE Smith, WH Dasu, SR TI Electron polarimetry: Status and prospects SO Deep Inelastic Scattering SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE electron beam polarimetry polarimeter Compton Moller Mott ID BEAM POLARIZATION MEASUREMENTS; MOLLER POLARIMETER AB Polarized electron beams are used widely for DIS, parity violation, and other experiments. I discuss the methods and instrumentation used to measure the electron beam polarization, as well as the prospects for the future facilities. A number of recent achievements and projects are discussed. More details on the subject can be found in a 1998's review[1]. C1 Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. RP Chudakov, E (reprint author), Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. NR 20 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 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 1035 EP 1038 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400209 ER PT S AU Bravar, A AF Bravar, A BE Smith, WH Dasu, SR TI Proton polarimetry at RHIC SO Deep Inelastic Scattering SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE polarization; elastic scattering AB The techniques used to measure precisely the polarization of the proton beams at RHIC are presented and discussed. Fast polarization measurements are performed using polarimeters based on pC elastic scattering. The absolute normalization is provided by a polarized hydrogen gas jet target. During the 2004 polarized proton run a relative precision on the beam polarization Delta P-beam/P-beam of 6.6% has been achieved. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Bravar, A (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 4 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 1039 EP 1042 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400210 ER PT S AU Morfin, JG AF Morfin, JG BE Smith, WH Dasu, SR TI Using neutrinos as a probe of the strong interaction SO Deep Inelastic Scattering SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE neutrino; scattering; nucleus ID PROTON DRIVER; SCATTERING; FERMILAB AB Neutrino scattering experiments have been studying QCD for over 30 years. From the Gargamelle experiments in the early 70's, through the subsequent bubble chamber and electronic detector experiments in the 80's and 90's, neutrino scattering experiments have steadily accumulated increasing statistics and minimized their systematic errors. While the most recent study of QCD with neutrinos is from the TeVatron neutrino beam (the NuTeV experiment with results presented by Martin Tzanov at this Workshop), near-future studies will shift to the Main Injector based NuMI facility also at Fermilab. The NuMI Facility at Fermilab provides an extremely intense beam of neutrinos making it an ideal place for high statistics (anti)neutrino-nucieon/nucleus scattering experiments. The MINER nu A experiment at Fermilab is a collaboration of elementary-particle and nuclear physicists planning to use a fully active fine-grained solid scintillator detector to measure absolute exclusive cross-sections and nuclear effects in nu - A interactions as well as a systematic study of the resonance-DIS transition region and DIS with an emphasis on the extraction of high-x(Bj) parton distribution functions. Further in the future an intense proton source, the Fermilab Proton Driver, will increase neutrino interaction rates by a further factor of 5 - 20. 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 9 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 1077 EP 1083 PG 7 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400217 ER PT S AU Brodsky, SJ AF Brodsky, SJ BE Smith, WH Dasu, SR TI Deep inelastic scattering at the amplitude level SO Deep Inelastic Scattering SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 13th International Workshop on Deep Inelastic Scattering (DIS 2005) CY APR 27-MAY 01, 2005 CL Madison, WI SP Argonne Natl Lab, US DOE, Deutsch Elecktronen Synchrotron Lab, US Natl Sci Fdn, Univ Wisconsin-Madison DE quantum chromodynamics; deep inelastic scattering; gauge/string duality ID WAVE-FUNCTION REPRESENTATION; QUANTUM CHROMODYNAMICS; EXCLUSIVE PROCESSES; COMPTON-SCATTERING; FORM-FACTOR; QCD; SPIN AB The deep inelastic lepton scattering and deeply virtual Compton scattering cross sections can be interpreted in terms of the fundamental wavefunctions defined by the light-front Fock expansion, thus allowing tests of QCD at the amplitude level. The AdS/CFF correspondence between gauge theory and string theory provides remarkable new insights into QCD, including a model for hadronic wavefunctions which display conformal scaling at short distances and color confinement at large distances. C1 Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. RP Brodsky, SJ (reprint author), Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. NR 37 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 0-7354-0283-3 J9 AIP CONF PROC PY 2005 VL 792 BP 1084 EP 1087 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDI61 UT WOS:000233631400218 ER PT J AU Gorbarenko, SA Basov, IA Chekhovskaya, MP Southon, J Khusid, TA Artemova, A AF Gorbarenko, SA Basov, IA Chekhovskaya, MP Southon, J Khusid, TA Artemova, A TI Orbital and millennium scale environmental changes in the southern Bering Sea during the last glacial-Holocene: Geochemical and paleontological evidence SO DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY LA English DT Article DE The Bering Sea; paleoceanography; paleoclimate; suborbital scale changes; DO events; planktonic forarninifera; carbonate dissolution ID NORTH PACIFIC; YOUNGER DRYAS; OKHOTSK SEA; NORTHWESTERN PACIFIC; OCEAN CIRCULATION; LATE PLEISTOCENE; CLIMATE; RECORD; SEDIMENTS; ISOTOPE AB The delta(18)O benthic foraminiferal curve and AMS C-14 radiocarbon data provide a representative age model for a southern Bering Sea sediment core (GC-11). Downcore profiles of delta(18)O of N. pachyderma (s.) and U. auberiana, carbonate and organic carbon contents, species changes in the planktonic foraminifera assemblages and some diatom species show orbital (MIS 1, 2 and 3) and millennium scale variability influenced by the Alaska Current flowing into the studied region. Three warmer episodes in the southern Bering Sea environment were assumed to be synchronous with DO interstadials 8, 12 and 14 (in GISP-2 chronology) during MIS 3. More severe climate and environmental conditions in the southern Bering Sea during MIS 2 occurred synchronously with the LGM within a 17-19 ka time span. Two well pronounced environmental warming events, productivity spikes and changes in the pore water geochemistry, separated by Younger Dryas cooling, were observed at the base of MIS 1 coeval with MWP 1A and 1B. Regional glacial primary productivity based on the calculation of the organic carbon MAR, similar to that found in the far northwestern Pacific, exceeded the Late Holocene values under conditions close to the present day. (c) 2005 Elsevier Ltd. All rights reserved. C1 Russian Acad Sci, Pacific Oceanol Inst, Far E Div, Vladivostok 690041, Russia. Russian Acad Sci, Inst Lithosphere Marginal Seas, Moscow 119180, Russia. Russian Acad Sci, Shirshov Inst Oceanos, Moscow 117218, Russia. Lawrence Livermore Natl Lab, Ctr AMS, Livermore, CA 94551 USA. RP Gorbarenko, SA (reprint author), Russian Acad Sci, Pacific Oceanol Inst, Far E Div, Baltiiskaya St 43, Vladivostok 690041, Russia. EM gorbarenko@poi.dvo.ru NR 48 TC 28 Z9 33 U1 0 U2 7 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0967-0645 J9 DEEP-SEA RES PT II JI Deep-Sea Res. Part II-Top. Stud. Oceanogr. PY 2005 VL 52 IS 16-18 BP 2174 EP 2185 DI 10.1016/j.dsr2.2005.08.005 PG 12 WC Oceanography SC Oceanography GA 995KS UT WOS:000234099800008 ER PT J AU Salama, K Majkic, G Balachandran, U AF Salama, K Majkic, G Balachandran, U TI Review: Stress-induced diffusion and cation defect chemistry studies of perovskites SO DEFECTS AND DIFFUSION IN CERAMICS: AN ANNUAL RETROSPECTIVE VII SE DEFECT AND DIFFUSION FORUM LA English DT Article DE cation; creep; defect chemistry; diffusion; perovskite ID HIGH-TEMPERATURE DEFORMATION; DOPED LANTHANUM GALLATE; DISLOCATION CLIMB; CUBIC ZIRCONIA; MASS-TRANSPORT; CREEP; OXIDES; LA0.2SR0.8FE0.8CR0.2O3-DELTA; MEMBRANES; BEHAVIOR AB In this paper we review a number of studies of stress-induced diffusional matter transport in perovskites, with an emphasis on creep studies used as a means of studying defect chemistry on the cation sublattices. Studies of diffusional creep in air or fixed atmospheres are reviewed first, and the common characteristics among these perovskites are identified. Creep studies of several perovskite-related or perovskite-like structures are reviewed next, and the similarities/dissimilarities to perovskites are outlined. The diffusional creep studies in controlled atmosphere are reviewed next, with the emphasis on defect chemistry modeling from creep data. The paper presents a detailed review of two creep studies in oxygen controlled atmosphere that show particularly interesting and remarkedly different behavior from that predicted by standard defect chemistry models. Defect chemistry modeling from creep data is presented for these two cases. The potential and limitations of using creep experiments for studying diffusional matter transport and cation defect chemistry are discussed. C1 Univ Houston, Dept Mech Engn, Houston, TX 77204 USA. Argonne Natl Lab, Argonne, IL 60439 USA. RP Salama, K (reprint author), Univ Houston, Dept Mech Engn, Houston, TX 77204 USA. EM ksalama@uh.edu; gmajkic@uh.edu; balu@anl.org NR 45 TC 3 Z9 3 U1 0 U2 4 PU TRANS TECH PUBLICATIONS LTD PI ZURICH-UETIKON PA BRANDRAIN 6, CH-8707 ZURICH-UETIKON, SWITZERLAND SN 1012-0386 J9 DEFECT DIFFUS FORUM PY 2005 VL 242-244 BP 43 EP 63 PG 21 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA BDF86 UT WOS:000233302000005 ER PT B AU Milanovich, FP Dzenitis, J Hindson, BJ Makarewicz, AJ McBride, MT Colston, BW AF Milanovich, FP Dzenitis, J Hindson, BJ Makarewicz, AJ McBride, MT Colston, BW BE Morrison, D Milanovich, F Ivnitski, D Austin, TR TI APDS, a network-ready, broad spectrum, environmental pathogen detection system SO Defense Against Bioterror: Detection Technologies, Implementation Strategies and Commercial Opportunities SE NATO SECURITY THROUGH SCIENCE SERIES B: PHYSICS AND BIOPHYSICS LA English DT Proceedings Paper CT NATO Advanced Research Workshop on Defense against Bioterror CY APR 08-11, 2004 CL Madrid, SPAIN SP NATO ID BIOLOGICAL WARFARE AGENTS AB The Autonomous Pathogen Detection System (APDS) 1 is a stand-alone pathogen detection system capable of rapid, continuous, low cost environmental monitoring of multiple airborne biological threat agents. Its basic design comprises aerosol sampling, in-line sample preparation, multiplex detection and identification immunoassays, and orthogonal, multiplexed PCR (nucleic acid) amplification and detection. Its primary application is to warn civilians and emergency preparedness personnel of a terrorist attack, the same system could also have a role in protecting military personnel from biological warfare attacks. APDS instruments can be used at high profile events such as the Olympics for short-term, intensive monitoring or more permanent installation in major public buildings or transportation nodes. All of these units can be networked to a single command center so that a small group of technical experts could maintain and respond to alarms at any of the sensors. The APDS has several key advantages over competing technologies: (1) the ability to measure up to 100 different agents and controls in a single sample, (2) the flexibility and ease with which new bead-based assays can be developed and integrated into the system, (3) the presence of an orthogonal, real-time detection module for highly sensitive and selective nucleic acid amplification and detection, (4) the ability to use the same basic system components for multiple deployment architectures, and (5) the relatively low cost per assay (<$2 per 10-plex or $0.20 per assay) and minimal consumables. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Milanovich, FP (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave,POB 808, Livermore, CA 94550 USA. NR 7 TC 0 Z9 0 U1 0 U2 1 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 1-4020-3386-9 J9 NATO SEC SCI B PHYS PY 2005 VL 1 BP 67 EP 75 DI 10.1007/1-4020-3384-2_5 PG 9 WC Public, Environmental & Occupational Health SC Public, Environmental & Occupational Health GA BEA79 UT WOS:000236493200005 ER PT B AU Brandt, L AF Brandt, L BE Morrison, D Milanovich, F Ivnitski, D Austin, TR TI Role of prototype system demonstrations in the development of detection-based WMD defenses SO Defense Against Bioterror: Detection Technologies, Implementation Strategies and Commercial Opportunities SE NATO SECURITY THROUGH SCIENCE SERIES B: PHYSICS AND BIOPHYSICS LA English DT Proceedings Paper CT NATO Advanced Research Workshop on Defense against Bioterror CY APR 08-11, 2004 CL Madrid, SPAIN SP NATO AB Demonstration of system prototypes in realistic user environments is a critical element in the maturation of detection-based systems employed for defense against Weapons of Mass Destruction (W-MD) attacks. The United States Department of Homeland Security utilizes structured efforts called Domestic Demonstration and Application Programs (DDAPs) to overcome the diverse barriers associated with moving laboratory technologies into useable, end-to-end systems. In this talk, specific examples, drawn principally from the major DDAPs concerned with the chemical and biological defense of transportation facilities, will illustrate the key issues and payoffs. System demonstrations and prototype deployments play important roles for the diverse participants in the development process, including technologists, commercial suppliers, end users, and government funding agencies. The deployments identify environmental and operational problems that impact system utility. The involvement of users is key to determination of realistic operational concepts and requirements. The prototype deployments also provide incentives for private sector investments in detector development and in other enabling technologies. In some cases, prototype deployments have evolved directly into full-scale, operational systems. These initial operational systems have then provided the basis for subsequent technology changes to improve operability and reduce costs. Two DDAPs that have already grown into operational, deployed systems are the Biological Aerosol Sentry and Information System (BASIS) for wide-area, detect-to-treat, biological defense and the Program for Response Options and Technology Ehancements for Chemical Terrorism (PROTECT) system for subway, detect-to-warn, chemical defense. The PROTECT program has been succeeded by the PROACT program which is focused on the biological defense of airports and BASIS is the foundation for the nation's BioWatch defense system. The importance of DDAPs and other demonstration programs is underscored by their relative growth as a fraction of the US Department of Homeland Security Science and Technology effort. C1 Sandia Natl Labs, Livermore, CA 94550 USA. RP Brandt, L (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 1-4020-3386-9 J9 NATO SEC SCI B PHYS PY 2005 VL 1 BP 91 EP 104 DI 10.1007/1-4020-3384-2_7 PG 14 WC Public, Environmental & Occupational Health SC Public, Environmental & Occupational Health GA BEA79 UT WOS:000236493200007 ER PT B AU Negrut, D Ortiz, JL AF Negrut, Dan Ortiz, Jose L. GP ASME TI On an approach for the linearization of the Differential Algebraic Equations of multibody dynamics SO DETC 2005: ASME INTERNATIONAL DESIGN ENGINEERING TECHNICAL CONFERENCES AND COMPUTERS AND INFORMATION IN ENGINEERING CONFERENCE, 2005, VOL 4 LA English DT Proceedings Paper CT ASME International Design Engineering Technical Conference/Computers and Information in Engineering Conference CY SEP 24-28, 2005-2006 CL Long Beach, CA SP ASME, Design Engn Div, ASME, Comp & Informat Engn Div AB The paper presents an approach to linearize the set of index 3 nonlinear Differential Algebraic Equations (DAE) that govern the dynamics of constrained mechanical systems. The proposed method allows for treatment of heterogeneous systems with flexible bodies, friction, control elements (user-defined differential equations), non-holonomic constraints, etc. While analytically equivalent to a state-space formulation of the dynamics minimal set of states, the proposed method inflates the governing equations and then computes a set of sensitivities that provide the linearization of interest. The most attractive attributes associated with the method are (a) handling of large heterogeneous problems, (b) ability to linearize the system in terms of arbitrary user-defined coordinates, and (c) straightforward algorithm implementation in a general-purpose dynamics simulation code such as MSC.ADAMS. C1 Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. RP Negrut, D (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. EM negrut@mcs.anl.gov; jose.ortiz@mscsoftware.com NR 15 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 0-7918-4741-1 PY 2005 BP 211 EP 222 PG 12 WC Engineering, Manufacturing; Engineering, Mechanical SC Engineering GA BFM23 UT WOS:000243032900023 ER PT S AU Dreger, H Kreibich, C Paxson, V Sommer, R AF Dreger, H Kreibich, C Paxson, V Sommer, R BE Julisch, K Kruegel, C TI Enhancing the accuracy of network-based intrusion detection with host-based context SO DETECTION OF INTRUSIONS AND MALWARE, AND VULNERABILITY ASSESSMENT, PROCEEDINGS SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article; Proceedings Paper CT 2nd International Conference on Detection of Intrusions and Malware, and Vulnerability Assessment CY JUL 07-08, 2005 CL Vienna, AUSTRIA SP GI SIG SIDAR, n runs GmbH, Tech Univ Venna AB In the recent past, both network- and host-based approaches to intrusion detection have received much attention in the network security community. No approach, taken exclusively, provides a satisfactory solution: network-based systems are prone to evasion, while host-based solutions suffer from scalability and maintenance problems. In this paper we present an integrated approach, leveraging the best of both worlds: we preserve the advantages of network-based detection, but alleviate its weaknesses by improving the accuracy of the traffic analysis with specific host-based context. Our framework preserves a separation of policy from mechanism, is highly configurable and more flexible than sensor/manager-based architectures, and imposes a low overhead on the involved end hosts. We include a case study of our approach for a notoriously hard problem for purely network-based systems: the correct processing of HTTP requests. C1 Tech Univ Munich, Dept Comp Sci, D-8000 Munich, Germany. Univ Cambridge, Comp Lab, Cambridge CB2 3QG, England. Lawrence Berkeley Natl Lab, Berkeley, CA USA. RP Dreger, H (reprint author), Tech Univ Munich, Dept Comp Sci, D-8000 Munich, Germany. EM dreger@in.tum.de; christian.kreibich@cl.cam.ac.uk; vern@icir.org; sommer@in.tum.de NR 23 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 3-540-26613-5 J9 LECT NOTES COMPUT SC PY 2005 VL 3548 BP 206 EP 221 PG 16 WC Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA BCR19 UT WOS:000230887600013 ER PT J AU Zhang, RG Poustovoitov, MV Ye, XF Santos, HA Chen, W Daganzo, SM Erzberger, JP Serebriiskii, IG Canutescu, AA Dunbrack, RL Pehrson, JR Berger, JM Kaufman, PD Adams, PD AF Zhang, RG Poustovoitov, MV Ye, XF Santos, HA Chen, W Daganzo, SM Erzberger, JP Serebriiskii, IG Canutescu, AA Dunbrack, RL Pehrson, JR Berger, JM Kaufman, PD Adams, PD TI Formation of MacroH2A-containing senescence-associated heterochromatin foci and senescence driven by ASF1a and HIRA SO DEVELOPMENTAL CELL LA English DT Article ID ASSEMBLY FACTOR-I; HISTONE GENE-TRANSCRIPTION; PML-RAR-ALPHA; SACCHAROMYCES-CEREVISIAE; NUCLEAR-BODIES; CELL-CYCLE; PREMATURE SENESCENCE; CHAPERONE ASF1; ONCOGENIC RAS; DNA-SYNTHESIS AB In senescent cells, specialized domains of transcriptionally silent senescence-associated heterochromatic foci (SAHF), containing heterochromatin proteins such as HP1, are thought to repress expression of proliferation-promoting genes. We have investigated the composition and mode of assembly of SAHF and its contribution to cell cycle exit. SAHF is enriched in a transcription-silencing histone H2A variant, macroH2A. As cells approach senescence, a known chromatin regulator, HIRA, enters PML nuclear bodies, where it transiently colocalizes with HP1 proteins, prior to incorporation of HP1 proteins into SAHF. A physical complex containing HIRA and another chromatin regulator, ASF1 a, is rate limiting for formation of SAHF and onset of senescence, and ASF1a is required for formation of SAHF and efficient senescence-associated cell cycle exit. These data indicate that HIRA and ASF1a drive formation of macroH2A-containing SAHF and senescence-associated cell cycle exit, via a pathway that appears to depend on flux of heterochromatic proteins through PML bodies. C1 Fox Chase Canc Ctr, Philadelphia, PA 19111 USA. Russian State Med Univ, Moscow 117869, Russia. Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA. Univ Penn, Sch Vet Med, Philadelphia, PA 19104 USA. RP Adams, PD (reprint author), Fox Chase Canc Ctr, 7701 Burholme Ave, Philadelphia, PA 19111 USA. EM peter.adams@fccc.edu OI Dunbrack, Roland/0000-0001-7674-6667; Kaufman, Paul/0000-0003-3089-313X FU NIGMS NIH HHS [GM-49351, R01 GM062281] NR 49 TC 364 Z9 379 U1 3 U2 17 PU CELL PRESS PI CAMBRIDGE PA 1100 MASSACHUSETTS AVE, CAMBRIDGE, MA 02138 USA SN 1534-5807 J9 DEV CELL JI Dev. Cell PD JAN PY 2005 VL 8 IS 1 BP 19 EP 30 DI 10.1016/j.devcel.2004.10.019 PG 12 WC Cell Biology; Developmental Biology SC Cell Biology; Developmental Biology GA 887SL UT WOS:000226325700006 PM 15621527 ER PT S AU Watson, CS Yang, P AF Watson, CS Yang, P BE Nair, KM Guo, R Bhalla, AS Hirano, SI Suvorov, D TI Effects of lead stoichiometry on the microstructure and mechanical properties of PZT 95/5 SO DEVELOPMENTS IN DIELECTRIC MATERIALS AND ELECTRONIC DEVICES SE CERAMIC TRANSACTIONS LA English DT Proceedings Paper CT 106th Annual Meeting of the American-Ceramic-Society CY APR 18-21, 2004 CL Indianapolis, IN SP Amer Ceram Soc ID ZIRCONATE-TITANATE CERAMICS; PZT CERAMICS; INTRINSIC NONSTOICHIOMETRY; PBO CONTENT; DENSIFICATION; OXIDE AB The microstructure and mechanical properties of niobium-modified lead zirconate titanate (PNZT) 95/5 ceramics, where 95/5 refers to the ratio of lead zirconate to lead titanate, were evaluated as a function of lead (Pb) stoichiometry. Chemically-prepared PNZT 95/5 ceramics were batched according to the nominal formulation of Pb-0.99(Zr0.955Ti0.045)(0.982)Nb0.018O3+x where x (-0.0274 less than or equal to x less than or equal to 0.0297) refers to the mote fraction of Pb and 0 that deviated from the stoichiometric value. The Pb concentrations were determined from calcined powders; no adjustments were made to Pb compositions due to weight loss during sintering. The microstructure (second phases, fracture mode and grain size) varied appreciably with Pb stoichiometry, whereas the mechanical properties (hardness, fracture toughness, strength and Weibull parameters) exhibited modest variation. Specimens deficient in Pb, 2.74% (x = -0.0274) and 2.15% (x = -0.02150), had a high area fraction of a zirconia (ZrO2) rich second phase on the order of 0.02. As the Pb content in solid solution increased the ZrO2 content decreased; no ZrO2 was observed for the specimen containing 2.97% excess Pb (x = 0.0297). Over the range of Pb stoichiometry most specimens fractured predominately transgranularly; however, 2.97% Pb excess PNZT 95/5 fractured predominately intergranularly. No systematic changes in hardness or Weibull modulus were observed as a function of Pb content. Fracture toughness decreased slightly from 1.7 MPa(.)m(1/2) for Ph deficient specimens to 1.5 MPa(.)m(1/2) for specimens with excess Pb. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Watson, CS (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 21 TC 0 Z9 0 U1 0 U2 2 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, WESTERVILLE, OH 43081-8720 USA SN 1042-1122 BN 1-57498-188-9 J9 CERAM TRANS PY 2005 VL 167 BP 89 EP 98 PG 10 WC Engineering, Electrical & Electronic; Materials Science, Ceramics; Physics, Condensed Matter SC Engineering; Materials Science; Physics GA BBP75 UT WOS:000226956800010 ER PT S AU Radovic, M Lara-Curzio, E Armstrong, B Walls, C AF Radovic, M Lara-Curzio, E Armstrong, B Walls, C BE Manithiram, A Kumta, PN Sundaram, SK Chan, SW TI Elastic properties, biaxial strength and fracture toughness of nickel-based anode materials for solid oxide fuel cells SO DEVELOPMENTS IN SOLID OXIDE FUEL CELLS AND LITHIUM ION BATTERIES SE CERAMIC TRANSACTIONS LA English DT Proceedings Paper CT 106th Annual Meeting of the American-Ceramic-Society CY APR 18-21, 2004 CL Indianapolis, IN SP Amer Ceram Soc ID POROSITY; BEHAVIOR; MODELS; AREA AB NiO-YSZ composites are widely used as precursors for Ni-YSZ anode materials for solid oxide fuel cells (SOFCs) with YSZ electrolytes. Prior to operation, the anode material is reduced in hydrogen to obtain a cermet comprised of metallic Ni and YSZ. The reduction process is accompanied by changes in the microstructure and mechanical properties of the Ni-based anodes, which needs to be understood and optimized to maximize the reliability of SOFCs. In this study the elastic properties, biaxial strength and fracture toughness of Ni-based anode materials were determined at room temperature as a function of initial porosity before and after full reduction in hydrogen. The elastic properties were determined by impulse excitation, while biaxial strength and fracture toughness were determined using the ring-on-ring and double torsion test methods, respectively. It was found that the magnitude of Young's and shear moduli decreases significantly with porosity and that the magnitude of the elastic moduli decreases almost by 50% due to H-2-induced reduction. The characteristic strength of the distributions of biaxial strengths of Ni-based anode materials decreased with increasing porosity, and it was always found to be lower (by as much as 50%) than that of the initial NiO-YSZ material. The decrease in the magnitude of the biaxial strength after reduction was attributed mainly to the increase in porosity of the material. Conversely, the fracture toughness of fully reduced Ni-based anodes was found to be significantly higher than that of unreduced anodes, which results from the ductile behavior of nickel. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Radovic, M (reprint author), Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA. RI Armstrong, Beth/E-6752-2017 OI Armstrong, Beth/0000-0001-7149-3576 NR 15 TC 0 Z9 0 U1 0 U2 3 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, WESTERVILLE, OH 43081-8720 USA SN 1042-1122 BN 1-57498-182-X J9 CERAM TRANS PY 2005 VL 161 BP 31 EP 40 PG 10 WC Electrochemistry; Materials Science, Ceramics SC Electrochemistry; Materials Science GA BBP69 UT WOS:000226904300004 ER PT S AU Radovic, M Lara-Curzio, E Armstrong, B Tortorelli, P Walker, L AF Radovic, M Lara-Curzio, E Armstrong, B Tortorelli, P Walker, L BE Manithiram, A Kumta, PN Sundaram, SK Chan, SW TI Effect of hydrogen reduction on the microstructure and elastic properties of Ni-based anodes for SOFCs SO DEVELOPMENTS IN SOLID OXIDE FUEL CELLS AND LITHIUM ION BATTERIES SE CERAMIC TRANSACTIONS LA English DT Proceedings Paper CT 106th Annual Meeting of the American-Ceramic-Society CY APR 18-21, 2004 CL Indianapolis, IN SP Amer Ceram Soc ID OXIDE FUEL-CELLS; NICKEL-OXIDE; KINETICS AB One route for the synthesis of solid-oxide fuel cells incorporating Ni-based anodes involves co-sintering in air of the electrolyte with a NiO-YSZ precursor to a Ni-YSZ anode. Prior to the operation of the cell it is necessary to convert NiO into metallic Ni by hydrogen-reduction. The reduction of NiO into Ni is characterized by significant volumetric changes, changes in porosity and hence, elastic properties and strength. These changes in turn will modify the state of residual stresses in the cell and impact its reliability. In this study, the kinetics of hydrogen reduction (using a gas mixture of 4%H-2-96%Ar) of 23vol% porous 75mol%NiO/YSZ anode materials was investigated by thermogravimetry between 600degreesC and 800degreesC. In addition, samples were reduced at 800degreesC for different periods of time to monitor the evolution of structural changes as a function of fraction of reduced NiO. The kinetics of reduction were found to exhibit two stages: At all temperatures the fraction of reduced NiO was found to increase linearly with time until nearly 70-80% of NiO was reduced, and the rate of reduction was found to increase with temperature according to an Arrhenius law with an activation energy of 25.2 kJ/mol. Optical and scanning electron microscopy, and electron microprobe chemical analysis indicate that the first stage of the reduction process is associated with the displacement of the reduction front across the thickness of the sample, whereas the second stage, which occurs at a much slower rate involves further reduction of NiO behind the reduction front. Young's and shear moduli of Ni-based anodes were determined by Resonant Ultrasound Spectroscopy and Impulse Excitation as a function of fraction of reduced NiO. It was found that elastic moduli decrease with extent of the reduction reaction predominately due to increase in porosity. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Radovic, M (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RI Armstrong, Beth/E-6752-2017 OI Armstrong, Beth/0000-0001-7149-3576 NR 19 TC 2 Z9 2 U1 0 U2 5 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, WESTERVILLE, OH 43081-8720 USA SN 1042-1122 BN 1-57498-182-X J9 CERAM TRANS PY 2005 VL 161 BP 41 EP 50 PG 10 WC Electrochemistry; Materials Science, Ceramics SC Electrochemistry; Materials Science GA BBP69 UT WOS:000226904300005 ER PT S AU Chou, YS Stevenson, JW AF Chou, YS Stevenson, JW BE Manithiram, A Kumta, PN Sundaram, SK Chan, SW TI Long-term thermal cycling of phlogopite mica-based compressive seals for solid oxide fuel cells SO DEVELOPMENTS IN SOLID OXIDE FUEL CELLS AND LITHIUM ION BATTERIES SE CERAMIC TRANSACTIONS LA English DT Proceedings Paper CT 106th Annual Meeting of the American-Ceramic-Society CY APR 18-21, 2004 CL Indianapolis, IN SP Amer Ceram Soc ID SEALANTS; SOFC AB Reliable sealants are one of the toughest challenges in advancing the solid oxide fuel cell technologies. One of the most stringent requirements for sealants is the thermal cycle stability. The sealants have to survive multiple thermal cycles during operation in stationary and transportation applications. Recently, researchers at the Pacific Northwest National Laboratory have developed a hybrid mica-based compressive seal with which leak rates were reduced to 2-4 x 10(-2) to 10(-3) sccm/cm at 800C. Long-term thermal cycling (up to 700 thermal cycles) will be conducted on the Phlogopite mica-based compressive seals. Open circuit voltage will be measured on a medium-sized (2"x2") 8YSZ plate with the mica seals during thermal cycling in a dual environment (2.75% H-2/Ar vs. air). The measured OCVs will be compared to the Nernst voltages to assess the sealing capability of the hybrid Phlogopite mica seals. C1 Pacific NW Natl LAb, Dept Mat, Richland, WA 99352 USA. RP Chou, YS (reprint author), Pacific NW Natl LAb, Dept Mat, K2-44,POB 999, Richland, WA 99352 USA. NR 11 TC 1 Z9 1 U1 0 U2 2 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, WESTERVILLE, OH 43081-8720 USA SN 1042-1122 BN 1-57498-182-X J9 CERAM TRANS PY 2005 VL 161 BP 69 EP 78 PG 10 WC Electrochemistry; Materials Science, Ceramics SC Electrochemistry; Materials Science GA BBP69 UT WOS:000226904300008 ER PT S AU Weil, KS Coyle, CA Hardy, JS Kim, JY Xia, GG AF Weil, KS Coyle, CA Hardy, JS Kim, JY Xia, GG BE Manithiram, A Kumta, PN Sundaram, SK Chan, SW TI Alternative methods of sealing planar solid oxide fuel cells SO DEVELOPMENTS IN SOLID OXIDE FUEL CELLS AND LITHIUM ION BATTERIES SE CERAMIC TRANSACTIONS LA English DT Proceedings Paper CT 106th Annual Meeting of the American-Ceramic-Society CY APR 18-21, 2004 CL Indianapolis, IN SP Amer Ceram Soc AB One of the key limiting issues in designing and fabricating a high performance planar solid oxide fuel cell (pSOFC) stack is the development of the appropriate materials and techniques for hermetically sealing the metal and ceramic components. There are essentially two standard methods of sealing: (1) by forming a rigid joint or (2) by constructing a compressive "sliding" seal. While short-terrn success has been achieved with both techniques, it is apparent that to meet the long-term operational needs of stack designers, alternative sealing concepts will need to be conceived. Described below are two alternative pSOFC sealing methods that have been developed at Pacific Northwest National Laboratory. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. RP Weil, KS (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99352 USA. RI Hardy, John/E-1938-2016 OI Hardy, John/0000-0002-1699-3196 NR 10 TC 0 Z9 0 U1 0 U2 0 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, WESTERVILLE, OH 43081-8720 USA SN 1042-1122 BN 1-57498-182-X J9 CERAM TRANS PY 2005 VL 161 BP 79 EP 87 PG 9 WC Electrochemistry; Materials Science, Ceramics SC Electrochemistry; Materials Science GA BBP69 UT WOS:000226904300009 ER PT S AU Chou, YS Stevenson, JW AF Chou, YS Stevenson, JW BE Manithiram, A Kumta, PN Sundaram, SK Chan, SW TI Infiltrated phlogopite micas with superior thermal cycle stability as compressive seals for solid oxide fuel cells SO DEVELOPMENTS IN SOLID OXIDE FUEL CELLS AND LITHIUM ION BATTERIES SE CERAMIC TRANSACTIONS LA English DT Proceedings Paper CT 106th Annual Meeting of the American-Ceramic-Society CY APR 18-21, 2004 CL Indianapolis, IN SP Amer Ceram Soc ID SEALANTS; SOFC AB Thermal cycle stability is one of the most stringent requirements for sealants in solid oxide fuel cell stacks. The sealants have to survive several hundreds to thousands of thermal cycles during lifetime operation in stationary and transportation applications. Recently, researchers at the Pacific Northwest National Laboratory have developed a novel method to improve the thermal cycle stability of mica seals. The main concept of the method is to infiltrate the mica flakes with wetting or liquid forming materials in order to reduce leak path connectivity from 3-D to 2-D and to achieve good thermal cycle stability with low leak rates. Leak rates were determined for mica seals infiltrated with H3BO3 or bismuth nitrate; the concept was also tested on a glass-mica composite. The infiltrated mica seals were also tested with cells, for which open circuit voltages were measured and compared to the Nernst voltages. C1 Pacific NW Natl Lab, Dept Mat, Richland, WA 99352 USA. RP Chou, YS (reprint author), Pacific NW Natl Lab, Dept Mat, K2-44,POB 999, Richland, WA 99352 USA. NR 11 TC 0 Z9 0 U1 0 U2 1 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, WESTERVILLE, OH 43081-8720 USA SN 1042-1122 BN 1-57498-182-X J9 CERAM TRANS PY 2005 VL 161 BP 89 EP 98 PG 10 WC Electrochemistry; Materials Science, Ceramics SC Electrochemistry; Materials Science GA BBP69 UT WOS:000226904300010 ER PT J AU Birrell, J Gerbi, JE Auciello, O Gibson, JM Johnson, J Carlisle, JA AF Birrell, J Gerbi, JE Auciello, O Gibson, JM Johnson, J Carlisle, JA TI Interpretation of the Raman spectra of ultrananocrystalline diamond SO DIAMOND AND RELATED MATERIALS LA English DT Article DE nanocrystalline; diamond film; vibrational properties characterization ID CHEMICAL-VAPOR-DEPOSITION; NANOCRYSTALLINE DIAMOND; AMORPHOUS-CARBON; MICROWAVE PLASMAS; FILMS; GROWTH; SCATTERING; POLYCRYSTALLINE; MICROSTRUCTURE; CRYSTALS AB It has long been known that by slightly altering the deposition conditions for diamond in plasma-enhanced chemical vapor deposition (PECVD), a transition from a microcrystalline to a nanocrystalline diamond morphology can be affected. The method of this transition, however, is not clear. This work investigates that transition by using transmission electron microscopy (TEM), scanning electron microscopy (SEM), and Raman spectroscopy. These experiments show that far from being a continuous transition, there is competitive growth between microcrystalline and nanocrystalline diamonds. Additionally, this work confirms the interpretation that certain peaks in the Raman spectrum previously attributed to "nanocrystalline diamond" are indeed due to the presence of hydrogen at the grain boundaries. For ultrananocrystalline diamond (UNCD) films, we verify that none of the spectral features observed using visible Raman spectroscopy can be attributed to sp(3)-bonded carbon, although the sample is composed of similar to95% sp(3)-bonded carbon. Thus, the Raman signal in UNCD can be considered to be solely due to the disordered sp(2)-bonded carbon at the grain boundaries. (C) 2004 Elsevier B.V. All rights reserved. C1 Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 USA. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Birrell, J (reprint author), Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 USA. EM birrell@anl.gov RI Gibson, Murray/E-5855-2013; Johnson, Jacqueline/P-4844-2014 OI Gibson, Murray/0000-0002-0807-6224; Johnson, Jacqueline/0000-0003-0830-9275 NR 30 TC 155 Z9 159 U1 5 U2 64 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0925-9635 J9 DIAM RELAT MATER JI Diam. Relat. Mat. PD JAN PY 2005 VL 14 IS 1 BP 86 EP 92 DI 10.1016/j.diamond.2004.07.012 PG 7 WC Materials Science, Multidisciplinary SC Materials Science GA 873SU UT WOS:000225302100014 ER PT S AU Prokofjev, SI Zhilin, VM Johnson, E Levinsen, M Dahmen, U AF Prokofjev, SI Zhilin, VM Johnson, E Levinsen, M Dahmen, U BE Danielewski, M Filipek, R Kozubs, R Kucza, W Zieba, P Zurek, Z TI In-situ TEM investigation of diffusion of nano-scale liquid Pb inclusions on dislocations and in bulk aluminum SO DIFFUSION IN MATERIALS: DIMAT 2004, PTS 1 AND 2 SE Defect and Diffusion Forum Series LA English DT Article; Proceedings Paper CT 6th International Conference on Diffusion in Materials CY JUL 18-23, 2004 CL Cracow, POLAND DE nano-scale liquid lead inclusions; crystalline aluminum matrix; thin foils; transmission electron microscopy; diffusion; random motion; dislocation trapping; microscopic mechanism ID MOTION; AL AB Diffusion of nano-sized liquid Pb inclusions in thin aluminum foils is investigated using in-situ transmission electron microscopy (TEM). Free diffusion of the inclusions in the bulk and diffusion constrained by dislocations trapping is studied. The motion of trapped Pb inclusions is spatially confined in close proximity to the dislocations. The diffusion coefficients of free motion of the inclusions are determined using Einstein's equation. The diffusion coefficients of trapped inclusions were obtained using an equation based on Smoluchowski's analysis of the Brownian motion of particle in a harmonic potential. The agreement of the diffusion coefficients of free and trapped inclusions indicates the same underlying microscopic mechanism, and no strong influence from dislocations. The microscopic mechanism controlling the mobility is discussed. C1 Inst Solid State Phys, Chernogolovka, Russia. Univ Copenhagen, NBI, Nanosci Ctr, Copenhagen, Denmark. Riso Natl Lab, Mat Res Dept, Roskilde, Denmark. Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen, Denmark. LBNL, Natl Ctr Electron Microscopy, Berkeley, CA USA. RP Prokofjev, SI (reprint author), Inst Solid State Phys, Chernogolovka, Russia. NR 14 TC 1 Z9 1 U1 0 U2 2 PU TRANS TECH PUBLICATIONS LTD PI STAFA-ZURICH PA LAUBLSRUTISTR 24, CH-8717 STAFA-ZURICH, SWITZERLAND SN 1012-0386 BN 3-908451-07-8 J9 DEFECT DIFFUS FORUM PY 2005 VL 237-240 BP 1072 EP 1077 PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA BCN26 UT WOS:000230138400153 ER PT B AU Curtis, CJ Kaydanova, T van Hest, MFAM Miedaner, A Garnett, E Ginley, DS Smith, L Leenheer, A Collins, RT AF Curtis, CJ Kaydanova, T van Hest, MFAM Miedaner, A Garnett, E Ginley, DS Smith, L Leenheer, A Collins, RT GP IS&T TI Ink jet printed metals and conducting polymers SO Digital Fabrication 2005, Final Program and Proceedings LA English DT Proceedings Paper CT 21st International Conference on Digital Printing Technologies (NIP21)/International Conference on Digital Fabrication Technologies CY SEP 18-22, 2005 CL Baltimore, MD SP Soc Imaging Sci & Technol, Imaging Soc Japan ID SOLVENTS AB Ag, Cu and Ni metallizations were inkjet printed with near vacuum deposition quality. The approach developed can easily be extended to other conductors such as Pd, Pt, Au, etc. Thick, highly conducting lines of Ag and Cu demonstrating good adhesion to glass, Si and printed circuit board (PCB) have been printed at 100-200 degrees C in air and N-2 respectively. Ag grids were inkjet-printed on Si solar cells and fired through the silicon nitride antireflection (AR) layer at 850 degrees C resulting in solar cells with 8% efficiency. Next-generation multicomponent inks (including etching agents) have also been developed which demonstrate improved fire-through contacts, leading to higher cell efficiencies. Poly(3,4-ethylenedioxythiophene)-polystyrene sulfonate PEDOT-PSS polymer based conductors were inkjet printed with conductivity as good or better than that of spin-coated films. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Curtis, CJ (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. RI Collins, Reuben/O-2545-2014 OI Collins, Reuben/0000-0001-7910-3819 NR 5 TC 2 Z9 2 U1 0 U2 9 PU SOC IMAGING SCIENCE & TECHNOLOGY PI SPRINGFIELD PA 7003 KILWORTH LANE, SPRINGFIELD, VA 22151 USA BN 0-89208-258-5 PY 2005 BP 160 EP 163 PG 4 WC Imaging Science & Photographic Technology SC Imaging Science & Photographic Technology GA BDR27 UT WOS:000235039200053 ER PT S AU Prasad, L AF Prasad, L BE Andres, E Damiand, G Lienhardt, P TI Rectification of the chordal axis transform and a new criterion for shape decomposition SO DISCRETE GEOMETRY FOR COMPUTER IMAGERY, PROCEEDINGS SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article; Proceedings Paper CT 12th International Conference on Discrete Geometry for Computer Imagery CY APR 13-15, 2005 CL Poitiers, FRANCE SP Int Assoc Pattern Recognit, Unic Poitiers, Signal, Image, Commun Lab, CNRS DE shape; delaunay triangulation; chordal axis transform; medial axis; skeleton; shape decomposition; morphology; co-circularity; shape graph; grouping; chord strength AB In an earlier work we proposed the chordal axis transform (CAT) as a more useful alternative to the medial axis transform (MAT) for obtaining skeletons of discrete shapes. Since then, the CAT has benefited various applications in 2D and 3D shape analysis. In this paper, we revisit the CAT to address its deficiencies that are artifacts of the underlying constrained Delaunay triangulation (CDT). We introduce a valuation on the internal edges of a discrete shape's CDT based on a concept of approximate co-circularity. This valuation provides a basis for suppression of the role of certain edges in the construction of the CAT skeleton. The result is a rectified CAT skeleton that has smoother branches as well as branch points of varying degrees, unlike the original CAT skeleton whose branches exhibit oscillations in tapered sections of shapes and allows only degree-3 branch points. Additionally, the valuation leads to a new criterion for parsing shapes into visually salient parts that closely resemble the empirical decompositions of shapes by human subjects as recorded in experiments by M. Singh, G. Seyranian, and D. Hoffman. C1 Los Alamos Natl Lab, ISR2, Space & Remote Sensing Sci Grp, Int Space & Response Div, Los Alamos, NM 87545 USA. RP Prasad, L (reprint author), Los Alamos Natl Lab, ISR2, Space & Remote Sensing Sci Grp, Int Space & Response Div, Los Alamos, NM 87545 USA. EM prasad@lanl.gov NR 14 TC 9 Z9 9 U1 0 U2 2 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 3-540-25513-3 J9 LECT NOTES COMPUT SC PY 2005 VL 3429 BP 263 EP 275 PG 13 WC Computer Science, Theory & Methods SC Computer Science GA BCG06 UT WOS:000229183900025 ER PT S AU Shankar, M Gorman, BL Smith, CM AF Shankar, M Gorman, BL Smith, CM BE Prasanna, VK Iyengar, S Spirakis, P Welsh, M TI SensorNet operational prototypes: Building wide-area interoperable sensor networks - Extended abstract SO DISTRIBUTED COMPUTING IN SENSOR SYSTEMS, PROCEEDINGS SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article; Proceedings Paper CT 1st IEEE International Conference on Distributed Computing in Sensor Systems CY JUN 30-JUL 01, 2005 CL Marina del Rey, CA SP IEEE Comp Soc, TCPP, IEEE Comp Soc, TCDP, Univ Geneva, Res Acad Comp Technol Inst C1 Oak Ridge Natl Lab, Oak Ridge, TN USA. RP Shankar, M (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN USA. RI Shankar, Mallikarjun/N-4400-2015 OI Shankar, Mallikarjun/0000-0001-5289-7460 NR 2 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 3-540-26422-1 J9 LECT NOTES COMPUT SC PY 2005 VL 3560 BP 391 EP 392 PG 2 WC Computer Science, Theory & Methods; Telecommunications SC Computer Science; Telecommunications GA BCO10 UT WOS:000230375000032 ER PT S AU D'yachkov, AG Macula, AJ Pogozelski, WK Renz, TE Rykov, VV Torney, DC AF D'yachkov, AG Macula, AJ Pogozelski, WK Renz, TE Rykov, VV Torney, DC BE Ferretti, C Mauri, G Zandron, C TI A weighted insertion-deletion stacked pair thermodynamic metric for DNA codes SO DNA COMPUTING SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article; Proceedings Paper CT 10th International Workshop on DNA Computing (DNA10) CY JUN 07-10, 2004 CL Univ Milano Bicocca, Milan, ITALY SP Univ Milano Bicocca, Dept Informat, Brainspark plc Comerson, Etnoteam, European Commiss, STMicroelectronics HO Univ Milano Bicocca AB Thermodynamic distance functions are important components in the construction of DNA codes and DNA codewords are structural and information building blocks in biomolecular computing and other biotechnical applications that employ DNA hybridization assays. We introduce new metrics for DNA code design that capture key aspects of the nearest neighbor thermodynamic model for hybridized DNA duplexes. One version of our metric gives the maximum number of stacked pairs of hydrogen bonded nucleotide base pairs that can be present in any secondary structure in a hybridized DNA duplex without pseudoknots. We introduce the concept of (t-gap) block isomorphic subsequences to describe new string metrics that are similar to the weighted Levenshtein insertion-deletion metric. We show how our new distances can be calculated by a generalization of the folklore longest common subsequence dynamic programming algorithm. We give a Varshamov-Gilbert like lower bound on the size of some of codes using our distance functions as constraints. We also discuss software implementation of our DNA code design methods. C1 USAF, Res Lab, IFTC, Griffiss AFB, NY 13441 USA. Moscow MV Lomonosov State Univ, Dept Probabil Theory, Moscow 119899, Russia. SUNY Coll Geneseo, Dept Chem, Geneseo, NY 14454 USA. Univ Nebraska, Dept Math, Omaha, NE 68182 USA. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Macula, AJ (reprint author), USAF, Res Lab, IFTC, Rome Res Site, Griffiss AFB, NY 13441 USA. EM dyachkov@artist.math.msu.su; macula@geneseo.edu; pogozels@geneseo.edu; thomas.renz@rl.af.mil; vrykov@mail.unomaha; dct@lanl.gov.edu NR 25 TC 9 Z9 11 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 3-540-26174-5 J9 LECT NOTES COMPUT SC PY 2005 VL 3384 BP 90 EP 103 PG 14 WC Biochemistry & Molecular Biology; Computer Science, Theory & Methods SC Biochemistry & Molecular Biology; Computer Science GA BCO58 UT WOS:000230424600008 ER PT S AU Fischer, PF Lottes, JW AF Fischer, PF Lottes, JW BE Kornhuber, R Hoppe, R Periaux, J Pironneau, O Widlund, O Xu, J TI Hybrid Schwarz-multigrid methods for the spectral element method: Extensions to Navier-Stokes SO DOMAIN DECOMPOSITION METHODS IN SCIENCE AND ENGINEERING SE LECTURE NOTES IN COMPUTATIONAL SCIENCE AND ENGINEERING LA English DT Proceedings Paper CT 15th International Conference on Domain Decomposition Methods in Science and Engineering CY JUL 21-25, 2003 CL Freie Univ, Berlin, GERMANY SP Zuse Inst Berlin, Weierstrass Inst Berlin, DFG Res Ctr Math Key Technologies HO Freie Univ AB The performance of multigrid methods for the standard Poisson problem and for the consistent Poisson problem arising in spectral element discretizations of the Navier-Stokes equations is investigated. It is demonstrated that overlapping additive Schwarz methods are effective smoothers, provided that the solution in the overlap region is weighted by the inverse counting matrix. It is also shown that spectral element based smoothers are superior to those based upon finite element discretizations. Results for several large 3D Navier-Stokes applications are presented. C1 Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. RP Fischer, PF (reprint author), Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. NR 23 TC 4 Z9 4 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 1439-7358 BN 3-540-22523-4 J9 LECT NOTES COMP SCI PY 2005 VL 40 BP 35 EP 49 PG 15 WC Mathematics, Applied SC Mathematics GA BBO66 UT WOS:000226747100003 ER PT J AU Zangar, RC Varnum, SM Bollinger, N AF Zangar, RC Varnum, SM Bollinger, N TI Studying cellular processes and detecting disease with protein microarrays SO DRUG METABOLISM REVIEWS LA English DT Article; Proceedings Paper CT 7th Annual Meeting of the International-Society-for-the-Study-of-Xenobiotics (ISSX) CY AUG 29-SEP 02, 2004 CL Vancouver, CANADA SP Int Soc Study Xenobiot DE protein; antibody; hapten; microarray; phosphotyrosine; immunoprofiling; kinase ID ROLLING-CIRCLE AMPLIFICATION; ANTIBODY MICROARRAY; ENZYMATIC-REACTIONS; CANCER-PATIENTS; BREAST-CANCER; GROWTH-FACTOR; TECHNOLOGY; IDENTIFICATION; IMMUNOASSAY; KINASE AB Protein microarrays are a rapidly developing analytic tool with diverse applications in biomedical research. These applications include profiling of disease-markers or autoimmune responses, understanding molecular pathways, protein modifications, and protein activities. One factor that is driving this expanding usage is the wide variety of experimental formats that protein microarrays can take. In this review, we provide a short, conceptual overview of the different approaches for protein microarray. We then examine some of the most significant applications of these microarrays to date, with an emphasis on how global protein analyses can be used to facilitate biomedical research. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. RP Zangar, RC (reprint author), Pacific NW Natl Lab, 902 Battelle Blvd,P7-56, Richland, WA 99352 USA. EM richard.zangar@pnl.gov FU NCI NIH HHS [CA097526] NR 61 TC 21 Z9 23 U1 0 U2 0 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA SN 0360-2532 J9 DRUG METAB REV JI Drug Metab. Rev. PY 2005 VL 37 IS 3 BP 473 EP 487 DI 10.1080/03602530500205309 PG 15 WC Pharmacology & Pharmacy SC Pharmacology & Pharmacy GA 973AI UT WOS:000232494900003 PM 16257831 ER PT J AU Ebeler, SE Dingley, KH Ubick, E Abel, S Mitchell, AE Burns, SA Steinberg, FM Clifford, AJ AF Ebeler, SE Dingley, KH Ubick, E Abel, S Mitchell, AE Burns, SA Steinberg, FM Clifford, AJ TI Animal models and analytical approaches for understanding the relationships between wine and cancer SO DRUGS UNDER EXPERIMENTAL AND CLINICAL RESEARCH LA English DT Article ID TRANSGENIC MOUSE MODEL; METABOLIC-ACTIVATION; HETEROCYCLIC AMINES; TUMOR ONSET; RED WINE; QUERCETIN; REDUCTASE; MICE; ARYLAMINES; INDUCTION AB We used two approaches for studying the relationships between wine consumption, wine composition and cancer In the first approach, a transgenic mouse model of human neurofibromatosis, combined with the use of well-defined, chemically purified diets, showed that red wine contains nonalcoholic components that can delay tumor onset. In additional studies, catechin, the main monomeric polyphenol of red wine, delayed tumor onset in this mouse model in a positive, linear relationship when incorporated into the diet at levels of 0.54 mmol/kg diet. In the second approach, low doses of the chemical carcinogen 2-amino-1-methyl-6-phenyl-imidazo(4,5-b)pyridine (PhIP) were administered to rats, and formation of DNA adducts was evaluated by accelerator mass spectrometry. Consumption of red wine solids (the residue from red wine remaining after removal of alcohol and water) and the wine polyphenol quercetin did not influence PhIP-DNA adduct levels or induce liver enzymes (glutathione-S-transferase and quinone reductase). However, quercetin did alter distribution of PhIP in the rat tissues compared to control animals and animals fed other potential dietary chemopreventive agents, including phenylethyl isothiocyanate and sulforaphane. These studies demonstrate the feasibility of these approaches for studying the chemopreventive potential of dietary components at physiologic levels in vivo. C1 Univ Calif Davis, Dept Viticulture & Enol, Davis, CA 95616 USA. Lawrence Livermore Natl Lab, Dept Biol, Livermore, CA USA. Lawrence Livermore Natl Lab, Biotechnol Res Program, Livermore, CA USA. Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94550 USA. Univ Calif Davis, Dept Vegetable Crops, Davis, CA 95616 USA. Univ Calif Davis, Dept Food Sci & Technol, Davis, CA 95616 USA. Univ Calif Davis, Dept Nutr, Davis, CA 95616 USA. RP Ebeler, SE (reprint author), Univ Calif Davis, Dept Viticulture & Enol, 1 Shields Ave, Davis, CA 95616 USA. EM seebeler@ucdavis.edu OI Ebeler, Susan/0000-0002-8394-6736 FU NCRR NIH HHS [RR13461]; NIDDK NIH HHS [DK45939, P30 DK35747] NR 27 TC 6 Z9 6 U1 0 U2 0 PU BIOSCIENCE EDIPRINT INC PI CAROUGE PA RUE ALEXANDRE-GAVARD 16, 1227 CAROUGE, SWITZERLAND SN 0378-6501 J9 DRUG EXP CLIN RES JI Drug Exp. Clin. Res PY 2005 VL 31 IS 1 BP 19 EP 27 PG 9 WC Pharmacology & Pharmacy SC Pharmacology & Pharmacy GA 912FT UT WOS:000228063700004 PM 15921026 ER PT S AU Faybishenko, B Witherspoon, PA Bodvarsson, GS Gale, J AF Faybishenko, B Witherspoon, PA Bodvarsson, GS Gale, J BE Faybishenko, B Witherspoon, PA Gale, J TI Emerging issues in fractured-rock flow and transport investigations: Introduction and overview SO Dynamics of Fluids and Transport in Fractured Rock SE GEOPHYSICAL MONOGRAPH SERIES LA English DT Proceedings Paper CT 2nd International Symposium on Dynamics of Fluids in Fractured Rock CY FEB, 2004 CL Lawrence Berkeley Natl Lab, Berkeley, CA HO Lawrence Berkeley Natl Lab ID HETEROGENEOUS MEDIA; UNSATURATED FLOW; VADOSE ZONE; RANDOM-WALK; MODEL C1 Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Faybishenko, B (reprint author), Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NR 129 TC 3 Z9 3 U1 0 U2 4 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0065-8448 BN 0-87590-427-0 J9 GEOPH MONOG SERIES PY 2005 VL 162 BP 1 EP 11 DI 10.1029/162GM02 PG 11 WC Geochemistry & Geophysics; Water Resources SC Geochemistry & Geophysics; Water Resources GA BDU81 UT WOS:000235517000001 ER PT S AU Pruess, K AF Pruess, K BE Faybishenko, B Witherspoon, PA Gale, J TI Numerical Simulations show potential for strong nonisothermal effects during fluid leakage from a geologic disposal reservoir for CO2 SO Dynamics of Fluids and Transport in Fractured Rock SE GEOPHYSICAL MONOGRAPH SERIES LA English DT Proceedings Paper CT 2nd International Symposium on Dynamics of Fluids in Fractured Rock CY FEB, 2004 CL Lawrence Berkeley Natl Lab, Berkeley, CA HO Lawrence Berkeley Natl Lab ID SEDIMENTARY BASINS; CARBON-DIOXIDE; SEQUESTRATION AB Leakage of CO2 from a primary disposal reservoir is presumed to occur along a fault or fracture zone, which has been modeled as a slab of porous and permeable material embedded in wall rocks of negligibly small permeability. Numerical simulations presented here include multiphase flow, boiling of liquid CO2, transitions between supercritical and subcritical conditions, phase partitioning between CO2 and water, and nonisothermal effects. Depressurization of rising CO2 is found to produce strong cooling. Conductive heat transfer from the impermeable wall rocks is an important aspect of system evolution. Pressure and temperature conditions are drawn towards the critical point of CO2 and the CO2 saturation line. The interplay between multiphase flow in the fracture zone and heat conduction perpendicular to it may produce nonmonotonic, quasi-periodic variations in thermodynamic conditions and CO2 discharges across the land surface. C1 Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA. RP Pruess, K (reprint author), Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA. NR 15 TC 7 Z9 7 U1 0 U2 3 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0065-8448 BN 0-87590-427-0 J9 GEOPH MONOG SERIES PY 2005 VL 162 BP 81 EP 89 DI 10.1029/162GM09 PG 9 WC Geochemistry & Geophysics; Water Resources SC Geochemistry & Geophysics; Water Resources GA BDU81 UT WOS:000235517000008 ER PT J AU Hoffman, FM Hargrove, WW Erickson, DJ Oglesby, RJ AF Hoffman, Forrest M. Hargrove, William W., Jr. Erickson, David J., III Oglesby, Robert J. TI Using clustered climate regimes to analyze and compare predictions from fully coupled general circulation models SO EARTH INTERACTIONS LA English DT Article DE climate; clustering; Parallel Climate Model; PCM; Multivariate Spatio-Temporal Clustering ID SEA-ICE DYNAMICS; SIMULATIONS; CCM3; DELINEATION; ECOREGIONS; REGIONS AB Changes in Earth's climate in response to atmospheric green-house gas buildup impact the heath of terrestrial ecosystems and the hydrologic cycle. The environmental conditions influential to plant and animal life are often mapped as ecoregions, which are land areas having similar combinations of environmental characteristics. This idea is extended to establish regions of similarity with respect to climatic characteristics that evolve through time using a quantitative statistical clustering technique called Multivariate Spatio-Temporal Clustering (MSTC). MSTC was applied to the monthly time series output from a fully coupled general circulation model (GCM) called the Parallel Climate Model (PCM). Results from an ensemble of five 99-yr-Business-As-Usual (BAU) transient simulations from 2000 to 2098 were analyzed. MSTC establishes an exhaustive set of recurring climate regimes that form a "skeleton" through the "observations" ( model output) throughout the occupied portion of the climate phase space formed by the characteristics being considered. MSTC facilitates direct comparison of ensemble members and ensemble and temporal averages since the derived climate regimes provide a basis for comparison. Moreover, by mapping all land cells to discrete climate states, the dynamic behavior of any part of the system can be studied by its time-varying sequence of climate state occupancy. MSTC is a powerful tool for model developers and environmental decision makers who wish to understand long, complex time series predictions of models. Strong predicted interannual trends were revealed in this analysis, including an increase in global desertification; a decrease in the cold, dry high-latitude conditions typical of North American and Asian winters; and significant warming in Antarctica and western Greenland. C1 Oak Ridge Natl Lab, Climate & Carbon Res Inst, Oak Ridge, TN 37831 USA. NASA, George C Marshall Space Flight Ctr, Huntsville, AL 35812 USA. RP Hoffman, FM (reprint author), Oak Ridge Natl Lab, Climate & Carbon Res Inst, POB 2008, Oak Ridge, TN 37831 USA. EM forrest@climate.ornl.gov RI Hoffman, Forrest/B-8667-2012 OI Hoffman, Forrest/0000-0001-5802-4134 NR 33 TC 9 Z9 9 U1 0 U2 2 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 USA SN 1087-3562 J9 EARTH INTERACT JI Earth Interact. PY 2005 VL 9 AR 10 PG 27 WC Geosciences, Multidisciplinary SC Geology GA 094BG UT WOS:000241213400001 ER PT S AU Kim, HC Lee, JH Kim, JW Kim, SK Liu, S Trivedi, R AF Kim, HC Lee, JH Kim, JW Kim, SK Liu, S Trivedi, R BE Kim, HS Park, SY Hur, BY TI Cellular solidification behavior of Fe-18Cr ferritic stainless steels SO ECO-MATERIALS PROCESSING & DESIGN VI SE Materials Science Forum LA English DT Article; Proceedings Paper CT 6th International Symposium on Eco-Materials Processing and Design CY JAN 16-18, 2005 CL Jinju, SOUTH KOREA SP Gyeongsand Natl Univ, Ultra Light Strength Foam Metal Lab-NRL, USA Technol Ctr, Korea Res Fdn, Korea Sci & & Engn Fdn, Japan Soc Promot Sci, New Univ Reg Innovat-MUGIGAI, Core Univ Program, Hanyang Univ, Osaka Univ, Informat Technol Res Ctr Gyeongsang Natl Univ DE cellular interface; directional solidification; ferritic stainless steels; absolute velocity AB Fe-Cr alloys have been important structural materials in industry as ferritic stainless steels because of its low thermal expansion and good corrosion resistance at high temperatures. Most of the studies have been focusing on corrosion and mechanical properties in this system. However, very little work has been conducted on solidification behavior. In this study, the solid/liquid interface stability was examined by an independent control of solidification rates and thermal gradients in 18Cr-3Al stainless steels using a directional solidification technique. Cellular and planar interfaces could be found easily, rather than dendritic. It was interesting to find that the dendritic interface changed to cellular with increasing solidification rates. The possibility of a high velocity cell forming at a high solidification rate regime has been discussed. C1 Chanwon Natl Univ, Dept Met, Chang Won 641773, South Korea. Stainless Steel Res Grp, Posco Res Ctr, Pohang 790360, South Korea. Iowa State Univ, Ames Lab, Dept Mat Sci & Engn, Ames, IA 50011 USA. RP Chanwon Natl Univ, Dept Met, 9 Sarim Dong, Chang Won 641773, South Korea. EM ljh@changwon.ac.kr NR 12 TC 1 Z9 1 U1 0 U2 0 PU TRANS TECH PUBLICATIONS LTD PI DURNTEN-ZURICH PA KREUZSTRASSE 10, 8635 DURNTEN-ZURICH, SWITZERLAND SN 0255-5476 BN 0-87849-966-0 J9 MATER SCI FORUM PY 2005 VL 486-487 BP 448 EP 451 PG 4 WC Engineering, Environmental; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BCO24 UT WOS:000230389400112 ER PT J AU Saxon, E Baker, B Hargrove, W Hoffman, F Zganjar, C AF Saxon, E Baker, B Hargrove, W Hoffman, F Zganjar, C TI Mapping environments at risk under different global climate change scenarios SO ECOLOGY LETTERS LA English DT Article DE biodiversity conservation; climate change; domains; ecoregions; mapping; multivariate cluster analysis; scenarios ID FUTURE; MODEL AB All global circulation models based on Intergovernmental Panel on Climate Change (IPCC) scenarios project profound changes, but there is no consensus on how to map their environmental consequences. Our multivariate representation of environmental space combines stable topographic and edaphic attributes with dynamic climatic attributes. We divide that environmental space into 500 unique domains and map their current locations and their projected locations in 2100 under contrasting emissions scenarios. The environmental domains found across half the study area today disappear under the higher emissions scenario, but persist somewhere in it under the lower emissions scenario. Locations affected least and those affected most under each scenario are mapped. This provides an explicit framework for designing conservation networks to include both areas at least risk (potential refugia) and areas at greatest risk, where novel communities may form and where sentinel ecosystems can be monitored for signs of stress. C1 TNC CL Joint Initiat Climate Change & Conservat, Washington, DC 20036 USA. TNC CL Joint Initiat Climate Change & Conservat, Boulder, CO 80302 USA. Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37830 USA. RP Saxon, E (reprint author), TNC CL Joint Initiat Climate Change & Conservat, 1919 M St NW,Suite 600, Washington, DC 20036 USA. EM esaxon@tnc.org RI Baker, Barry/A-3259-2008; Baker, Barry/C-4884-2009; Hoffman, Forrest/B-8667-2012 OI Hoffman, Forrest/0000-0001-5802-4134 NR 22 TC 52 Z9 54 U1 1 U2 30 PU BLACKWELL PUBLISHING LTD PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DG, OXON, ENGLAND SN 1461-023X J9 ECOL LETT JI Ecol. Lett. PD JAN PY 2005 VL 8 IS 1 BP 53 EP 60 DI 10.1111/j.1461-0248.2004.00694.x PG 8 WC Ecology SC Environmental Sciences & Ecology GA 879WQ UT WOS:000225750300007 ER PT J AU Patriarca, M Chakraborti, A Kaski, K Germano, G AF Patriarca, Marco Chakraborti, Anirban Kaski, Kimmo Germano, Guido BE Chatterjee, A Yarlagadda, S Chakrabarti, BK TI Kinetic Theory Models for the Distribution of Wealth: Power Law from Overlap of Exponentials SO ECONOPHYSICS OF WEALTH DISTRIBUTIONS: ECONOPHYS-KOLKATA I SE New Economic Windows LA English DT Article; Book Chapter ID STATISTICAL-MECHANICS; SAVING PROPENSITY; MONEY; MARKETS; GIBBS AB Various multi-agent models of wealth distributions defined by microscopic laws regulating the trades, with or without a saving criterion, are reviewed. We discuss and clarify the equilibrium properties of the model with constant global saving propensity, resulting in Gamma distributions, and their equivalence to the Maxwell-Boltzmann kinetic energy distribution for a system of molecules in an effective number of dimensions D(lambda), related to the saving propensity lambda [M. Patriarca, A. Chakraborti, and K. Kaski, Phys. Rev. E 70 (2004) 016104]. We use these results to analyze the model in which the individual saving propensities of the agents are quenched random variables, and the tail of the equilibrium wealth distribution exhibits a Pareto law f(x) proportional to x(-alpha-1) with an exponent alpha = 1 [A. Chatterjee, B. K. Chakrabarti, and S. S. Manna, Physica Scripta T106 (2003) 367]. Here, we show that the observed Pareto power law can be explained as arising from the overlap of the Maxwell-Boltzmann distributions associated to the various agents, which reach an equilibrium state characterized by their individual Gamma distributions. We also consider the influence of different types of saving propensity distributions on the equilibrium state. C1 [Patriarca, Marco; Kaski, Kimmo] Helsinki Univ Technol, Lab Computat Engn, Espoo 02015, Finland. [Chakraborti, Anirban] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. [Patriarca, Marco; Germano, Guido] Univ Marburg, Fachbereich Chem, D-35032 Marburg, Germany. RP Patriarca, M (reprint author), Helsinki Univ Technol, Lab Computat Engn, POB 9203, Espoo 02015, Finland. EM patriarc@staff.uni-marburg.de; anirban@bnl.gov; kimmo.kaski@hut.fi; germano@staff.uni-marburg.de RI Germano, Guido/A-8726-2008; Patriarca, Marco/D-8759-2013 OI Germano, Guido/0000-0003-4441-9842; Patriarca, Marco/0000-0001-6743-2914 NR 18 TC 18 Z9 18 U1 0 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES BN 978-88-470-0389-7 J9 NEW ECON WINDOWS PY 2005 BP 93 EP 110 DI 10.1007/88-470-0389-X_10 D2 10.1007/88-470-0389-X PG 18 WC Economics; Physics, Applied SC Business & Economics; Physics GA BLI95 UT WOS:000270274500011 ER PT J AU Whitham, TG Lonsdorf, E Schweitzer, JA Bailey, JK Fischer, DG Shuster, SM Lindroth, RL Hart, SC Allan, GJ Gehring, CA Keim, P Potts, BM Marks, J Rehill, BJ DiFazio, SP LeRoy, CJ Wimp, GM Woolbright, S AF Whitham, TG Lonsdorf, E Schweitzer, JA Bailey, JK Fischer, DG Shuster, SM Lindroth, RL Hart, SC Allan, GJ Gehring, CA Keim, P Potts, BM Marks, J Rehill, BJ DiFazio, SP LeRoy, CJ Wimp, GM Woolbright, S TI "All effects of a gene on the world": Extended phenotypes, feedbacks, and multi-level selection SO ECOSCIENCE LA English DT Editorial Material ID LITTER; COMMUNITY; DYNAMICS; FOREST C1 No Arizona Univ, Dept Biol Sci, Flagstaff, AZ 86011 USA. No Arizona Univ, Merriam Powell Ctr Environm Res, Flagstaff, AZ 86011 USA. No Arizona Univ, Sch Forestry, Flagstaff, AZ 86011 USA. Evergreen State Coll, Olympia, WA 98505 USA. Univ Wisconsin, Dept Entomol, Madison, WI 53706 USA. Univ Tasmania, Cooperat Res Ctr Sustainable Prod Forestry, Hobart, Tas 7001, Australia. Univ Tasmania, Dept Plant Sci, Hobart, Tas 7001, Australia. USN Acad, Dept Chem, Annapolis, MD 21402 USA. Oak Ridge Natl Lab, Div Sci, Oak Ridge, TN 37831 USA. Univ Maryland, Dept Entomol, College Pk, MD 20742 USA. RP Whitham, TG (reprint author), No Arizona Univ, Dept Biol Sci, Flagstaff, AZ 86011 USA. EM Thomas.Whitham@nau.edu RI Keim, Paul/A-2269-2010; Woolbright, Scott/B-4354-2012; Potts, Brad/C-6489-2013 OI Woolbright, Scott/0000-0002-7886-1009; Potts, Brad/0000-0001-6244-289X NR 15 TC 7 Z9 7 U1 1 U2 17 PU UNIVERSITE LAVAL PI ST FOY PA PAVILLON CHARLES-EUGENE MARCHAND, LOCAL 0166, ST FOY, QUEBEC G1K 7P4, CANADA SN 1195-6860 J9 ECOSCIENCE JI Ecoscience PY 2005 VL 12 IS 1 BP 5 EP 7 PG 3 WC Ecology SC Environmental Sciences & Ecology GA 913AE UT WOS:000228121300002 ER PT B AU Nieplocha, J Tipparaju, V Krishnan, M AF Nieplocha, Jarek Tipparaju, Vinod Krishnan, Manoj GP IEEE BE Martin, DC TI Optimizing strided remote memory access operations on the Quadrics QsNetII network interconnect SO Eighth International Conference on High-Performance Computing in Asia-Pacific Region, Proceedings LA English DT Proceedings Paper CT 8th International Conference on High-Performance Computing in Asia-Pacific Region CY NOV 30-DEC 03, 2005 CL Beijing, PEOPLES R CHINA SP Chinese Acad Sci, China Comp Federat, IEEE Comp Soc, TC Scalable Comp AB This paper describes and evaluates protocols for optimizing strided non-contiguous communication on the Quadrics QsNetII high-performance network interconnect. Most of previous related studies focused primarily on NIC-based or host-based protocols. This paper discusses merits for using both approaches and tries to determine types and data sizes in the communication operations for which these protocols should be used. We focus on the Quadrics QsNetII network, which offers powerful communication processors on the network interface card (NIC) and practical and flexible opportunities for exploiting them in context of the user. Furthermore, the paper focuses on non-contiguous data remote memory access (RMA) transfers and performs the evaluation in context of standalone communication and application microbenchmarks. In comparison to the vendor provided noncontiguous interfaces, proposed approach achieved significant performance improvement in context of microbenchmarks as well as application kernels; dense matrix multiplication, and the Co-Array Fortran version of the NAS BT parallel benchmark. For example, for NAS BT Class B, 54% improvement in overall communication time and a 42% improvement in matrix multiplication was achieved for 64 processes. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. RP Nieplocha, J (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. NR 13 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 0-7695-2486-9 PY 2005 BP 28 EP 35 DI 10.1109/HPCASIA.2005.62 PG 8 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering; Computer Science, Theory & Methods SC Computer Science GA BFB23 UT WOS:000240654500004 ER PT J AU Tu, Y Lin, YH Yantasee, W Ren, ZF AF Tu, Y Lin, YH Yantasee, W Ren, ZF TI Carbon nanotubes based nanoelectrode arrays: Fabrication, evaluation, and application in voltammetric analysis SO ELECTROANALYSIS LA English DT Article DE carbon-nanotubes; nanoelectrode arrays; voltammetry; lead ID MICROELECTRODE ARRAYS; SITE DENSITY; ELECTRODES; ENSEMBLES; ELECTROCHEMISTRY; OPTIMIZATION AB Fabrication, electrochemical characterization, and applications of low-site density carbon nanotubes based nanoelectrode arrays (CNTs-NEAs) are reported in this work. Spin-coating of an epoxy resin provides a new way to create the electrode passivation layer effectively reducing electrode capacitance and current leakage. Cyclic voltammetry showed the sigmoidal shape curves with low capacitive current and scan-rate-independent limiting current. Square-wave voltammetry showed well-defined peak shapes in voltammograms of K3Fe(CN)(6) and 4-acetamidophenol (acetaminophen) and the peak currents to be proportioned to their concentrations, demonstrating the feasibility for voltammetric analysis of the CNTs-NEAs. The CNTs-NEAs were also used successfully for voltammetric detection of trace concentrations of lead(II) at ppb level at first-time. The CNTs-NEAs provide an excellent platform for ultra sensitive electrochemical sensors for chemical and biological sensing. C1 Boston Coll, Chestnut Hill, MA 02467 USA. Pacific NW Natl Lab, Richland, WA 99352 USA. RP Lin, YH (reprint author), Boston Coll, Chestnut Hill, MA 02467 USA. EM Yuehe.lin@pnl.gov RI Lin, Yuehe/D-9762-2011; Ren, Zhifeng/B-4275-2014 OI Lin, Yuehe/0000-0003-3791-7587; NR 34 TC 72 Z9 73 U1 1 U2 24 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 1040-0397 J9 ELECTROANAL JI Electroanalysis PD JAN PY 2005 VL 17 IS 1 BP 79 EP 84 DI 10.1002/elan.200403122 PG 6 WC Chemistry, Analytical; Electrochemistry SC Chemistry; Electrochemistry GA 894KU UT WOS:000226791400010 ER PT J AU Chen, GY Zhuang, GV Richardson, TJ Liu, G Ross, PN AF Chen, GY Zhuang, GV Richardson, TJ Liu, G Ross, PN TI Anodic polymerization of vinyl ethylene carbonate in Li-ion battery electrolyte SO ELECTROCHEMICAL AND SOLID STATE LETTERS LA English DT Article ID DENSITY-FUNCTIONAL THEORY; PC-EC SOLUTIONS; CELLS; SPECTROSCOPY; PROPYLENE; LIBF4; FILM; DEC AB A study of the anodic oxidation of vinyl ethylene carbonate (VEC) was conducted with post-mortem analysis of reaction products by attenuated total reflection Fourier transform infrared analysis and gel permeation chromatography (GPC). The half-wave potential (E1/2) for oxidation of VEC is ca. 3.6 V, producing a resistive film on the electrode surface. GPC analysis of the film on a gold electrode produced by anodization of a commercial Li-ion battery electrolyte containing 2% VEC at 4.1 V showed the presence of high molecular weight polymers. IR analysis indicated polycarbonates with alkyl carbonate rings linked by aliphatic methylene and methyl branches. (c) 2005 The Electrochemical Society. C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Chen, GY (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. EM GVZhuang@lbl.gov NR 24 TC 30 Z9 31 U1 3 U2 28 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA SN 1099-0062 J9 ELECTROCHEM SOLID ST JI Electrochem. Solid State Lett. PY 2005 VL 8 IS 7 BP A344 EP A347 DI 10.1149/1.1921127 PG 4 WC Electrochemistry; Materials Science, Multidisciplinary SC Electrochemistry; Materials Science GA 938KN UT WOS:000229999200004 ER PT J AU Lee, SH Tracy, CE Yan, YF Pitts, JR Deb, SK AF Lee, SH Tracy, CE Yan, YF Pitts, JR Deb, SK TI Solid-state nanocomposite electrochromic pseudocapacitors SO ELECTROCHEMICAL AND SOLID STATE LETTERS LA English DT Article ID A-WO3-Y THIN-FILMS; ELECTROCHEMICAL CAPACITORS; OXIDE; MECHANISM; DISPLAYS AB We report on an electrochromic phenomenon in transition metal oxide materials induced by a novel mechanism involving charge/discharge of a solid-state electrochemical pseudocapacitor. Thin film nanocomposites of polycrystalline nickel oxide nanoparticles embedded in an amorphous tantalum oxide electrolyte matrix have been fabricated by reactive radio-frequency magnetron sputtering from a composite Ni/Ta metal target followed by a 400 degrees C oxygen anneal. Polycrystalline NiO nanoparticles within the composite play a role as an active electrochemical component while a surrounding amorphous Ta2O5 matrix acts as a proton electrolyte. This unique nanocomposite material construction exhibits a substantial electrochromic optical modulation. (C) 2005 The Electrochemical Society. C1 Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Lee, SH (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. EM se_hee_lee@nrel.gov RI Lee, Sehee/A-5989-2011 NR 17 TC 29 Z9 29 U1 3 U2 23 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA SN 1099-0062 J9 ELECTROCHEM SOLID ST JI Electrochem. Solid State Lett. PY 2005 VL 8 IS 4 BP A188 EP A190 DI 10.1149/1.1861050 PG 3 WC Electrochemistry; Materials Science, Multidisciplinary SC Electrochemistry; Materials Science GA 915SL UT WOS:000228326500003 ER PT J AU Saraf, L Matson, DW Shutthanandan, V Wang, CM Marina, O Thevuthasan, S AF Saraf, L Matson, DW Shutthanandan, V Wang, CM Marina, O Thevuthasan, S TI Ceria incorporation into YSZ columnar nanostructures SO ELECTROCHEMICAL AND SOLID STATE LETTERS LA English DT Article ID OXIDE FUEL-CELLS; NANOCRYSTALLINE CERIA; THIN-FILMS; TRANSPORT-PROPERTIES; TEMPERATURE; DEPOSITION; OXYGEN AB We report the growth of porous yttria-stabilized zirconia (YSZ) columnar nanostructures by the glancing angle deposition (GLAD) technique. CeO2 sol solution was incorporated in to YSZ creating high interface density columnar nanostructures. Initial experiments indicate a nonlinear conductivity response in the combination nanostructures. The combination nanostructures had higher conductivity than polycrystalline CeO2 and polycrystalline YSZ in the intermediate temperature range of 600-825 K. GLAD/sol-gel process to create high-density columnar nanostructures or high CeO2/YSZ boundaries per unit volume is discussed in the context of solid oxide fuel cells operating at intermediate temperatures. (c) 2005 The Electrochemical Society. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. RP Saraf, L (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. EM Laxmikant.Saraf@pnl.gov NR 19 TC 7 Z9 7 U1 0 U2 5 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA SN 1099-0062 J9 ELECTROCHEM SOLID ST JI Electrochem. Solid State Lett. PY 2005 VL 8 IS 10 BP A525 EP A527 DI 10.1149/1.2033607 PG 3 WC Electrochemistry; Materials Science, Multidisciplinary SC Electrochemistry; Materials Science GA 957RL UT WOS:000231390900010 ER PT J AU Weil, KS Kim, JY Hardy, JS AF Weil, KS Kim, JY Hardy, JS TI Reactive air brazing: A novel method of sealing SOFCs and other solid-state electrochemical devices SO ELECTROCHEMICAL AND SOLID STATE LETTERS LA English DT Article ID OXIDE FUEL-CELLS; CHEMICAL INTERACTIONS; GLASS; SEALANTS; SYSTEMS; ALLOYS AB High-temperature electrochemical devices operate via an ion gradient that develops across a solid electrolyte. Consequently, hermeticity across this membrane is paramount. Not only must the electrolyte contain no interconnected porosity, but it must be connected to device chassis with a gas-tight seal. Here we report a new method of brazing developed specifically for solid-state electrochemical applications. We demonstrate that the seal is hermetic and resistant to thermal aging, can be thermally cycled under rapid heating rates with no measurable loss in seal strength, and has shown promise in sealing full-size planar solid oxide fuel cell (pSOFC) components. (C) 2005 The Electrochemical Society. C1 Pacific NW Natl Lab, Energy Sci & Technol Div, Richland, WA 99352 USA. RP Weil, KS (reprint author), Pacific NW Natl Lab, Energy Sci & Technol Div, Richland, WA 99352 USA. EM scott.weil@pnl.gov RI Hardy, John/E-1938-2016 OI Hardy, John/0000-0002-1699-3196 NR 20 TC 49 Z9 50 U1 0 U2 11 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA SN 1099-0062 J9 ELECTROCHEM SOLID ST JI Electrochem. Solid State Lett. PY 2005 VL 8 IS 2 BP A133 EP A136 DI 10.1149/1.1850391 PG 4 WC Electrochemistry; Materials Science, Multidisciplinary SC Electrochemistry; Materials Science GA 887GN UT WOS:000226293900016 ER PT J AU Yang, ZG Xia, GG Stevenson, JW AF Yang, ZG Xia, GG Stevenson, JW TI Mn1.5Co1.5O4 spinel protection layers on ferritic stainless steels for SOFC interconnect applications SO ELECTROCHEMICAL AND SOLID STATE LETTERS LA English DT Article ID OXIDE FUEL-CELL; CATHODE; ALLOYS AB In intermediate temperature solid oxide fuel cells (SOFCs), the use of cost-effective chromia-forming alloy interconnects such as ferritic stainless steels can lead to severe degradation in cell performance due to chromium migration into the cells at the cathode side. To protect cells from chromium poisoning and improve their performance, a Mn1.5Co1.5O4 spinel barrier layer has been developed and tested on the ferritic stainless steel Crofer22 APU. Thermal and electrical tests confirmed the effectiveness of the spinel protection layer as a means of stopping chromium migration and decreasing oxidation, while promoting electrical contact and minimizing cathode/interconnect interfacial resistance. The thermally grown spinel protection layer bonded well to the Crofer22 APU substrate and demonstrated stable performance under thermal cycling. (C) 2005 The Electrochemical Society. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. RP Yang, ZG (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. EM zgary.yang@pnl.gov NR 19 TC 123 Z9 127 U1 0 U2 18 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA SN 1099-0062 J9 ELECTROCHEM SOLID ST JI Electrochem. Solid State Lett. PY 2005 VL 8 IS 3 BP A168 EP A170 DI 10.1149/1.1854122 PG 3 WC Electrochemistry; Materials Science, Multidisciplinary SC Electrochemistry; Materials Science GA 915SK UT WOS:000228326400008 ER PT J AU Yoon, WS Balasubramanian, M Yang, XQ McBreen, J Hanson, J AF Yoon, WS Balasubramanian, M Yang, XQ McBreen, J Hanson, J TI Time-resolved XRD study on the thermal decomposition of Li1-xNi0.8Co0.15Al0.05O2 cathode materials for Li-ion batteries SO ELECTROCHEMICAL AND SOLID STATE LETTERS LA English DT Article ID DIFFERENTIAL SCANNING CALORIMETRY; STABILITY AB Time-resolved X-ray diffraction (XRD) studies were used to monitor structural changes in charged Li1-xNi0.8Co0.15Al0.05O2 cathodes in the presence of electrolyte as a function of temperature. The electrolyte accelerated thermal decomposition of the charged cathode material. The presence of the electrolyte changed the paths of the structural changes and lowered the temperatures for onset of the reactions. As the degree of Li-ion deintercalation increased, the thermal decomposition took place at less elevated temperature. At low states of charge (x < 0.5) the XRD pattern of Li1-xNi0.8Co0.15Al0.05O2 cathode heated at 450&DEG;C is similar to NiO structure. The formation of the NiO-like rock salt structure is accompanied by the formation of Li2CO3. In the presence of electrolyte the solvent acts as a reducing agent and also lithium extracted from the structure reacts with the solvent resulting in the formation of Li2CO3. Time-resolved XRD results for Li1-xNi0.8Co0.15Al0.05O2 at higher states of charge (x > 0.5), when heated from 25 to 450degreesC, show the conversion to a disordered spinel structure from a layered structure at elevated temperature. When subsequently heated at higher temperature, the disordered spinel structure converts to NiO-like rock salt structure. (C) 2004 The Electrochemical Society. C1 Brookhaven Natl Lab, Dept Mat Sci, Upton, NY 11973 USA. Argonne Natl Lab, Adv Photon Source, Xray Operat & Res, Argonne, IL 60439 USA. Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. RP Yoon, WS (reprint author), Brookhaven Natl Lab, Dept Mat Sci, Upton, NY 11973 USA. EM jmcbreen@bnl.gov RI Hanson, jonathan/E-3517-2010; Yoon, Won-Sub/H-2343-2011 NR 11 TC 26 Z9 28 U1 2 U2 15 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA SN 1099-0062 J9 ELECTROCHEM SOLID ST JI Electrochem. Solid State Lett. PY 2005 VL 8 IS 2 BP A83 EP A86 DI 10.1149/1.1846714 PG 4 WC Electrochemistry; Materials Science, Multidisciplinary SC Electrochemistry; Materials Science GA 887GN UT WOS:000226293900003 ER PT J AU Zaghib, K Shim, J Guerfi, A Charest, P Striebel, KA AF Zaghib, K Shim, J Guerfi, A Charest, P Striebel, KA TI Effect of carbon source as additives in LiFePO4 as positive electrode for lithium-ion batteries SO ELECTROCHEMICAL AND SOLID STATE LETTERS LA English DT Article ID CATHODES AB The electrochemical properties of LiFePO4 cathodes with different carbon contents were studied to determine the role of carbon as conductive additive. LiFePO4 cathodes containing from 0 to 12% of conductive additive (carbon black or mixture of carbon black and graphite) were cycled at different C rates. The capacity of the LiFePO4 cathode increased as conductive additive content increased. Carbon increased the utilization of active material and the electrical conductivity of electrode, but decreased volumetric capacity of electrode. This composition (LiFePO4 with 3 wt % of carbon and 3 wt % of Graphite) is suitable for HEV application. (C) 2005 The Electrochemical Society. C1 Inst Rech Hydro Quebec, Varennes, PQ J3X 1S1, Canada. Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. RP Zaghib, K (reprint author), Inst Rech Hydro Quebec, 1800 Montee Ste Julie, Varennes, PQ J3X 1S1, Canada. EM zaghib.karim@ireq.ca NR 15 TC 97 Z9 100 U1 3 U2 36 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA SN 1099-0062 J9 ELECTROCHEM SOLID ST JI Electrochem. Solid State Lett. PY 2005 VL 8 IS 4 BP A207 EP A210 DI 10.1149/1.1865652 PG 4 WC Electrochemistry; Materials Science, Multidisciplinary SC Electrochemistry; Materials Science GA 915SL UT WOS:000228326500009 ER PT J AU Zhuang, GV Yang, H Blizanac, B Ross, PN AF Zhuang, GV Yang, H Blizanac, B Ross, PN TI A study of electrochemical reduction of ethylene and propylene carbonate electrolytes on graphite using ATR-FTIR spectroscopy SO ELECTROCHEMICAL AND SOLID STATE LETTERS LA English DT Article ID LITHIUM-ION BATTERIES; SURFACE-FILM FORMATION; VINYLENE CARBONATE; NEGATIVE ELECTRODE; LI-ION; MECHANISMS; INTERCALATION; DECOMPOSITION; INSERTION; CAPACITY AB We present results from testing the hypothesis that there is a different reaction pathway for the electrochemical reduction of PC EC-based electrolytes at graphite electrodes with LiPF6 as the salt in common. We examined the reduction products formed using ex situ Fourier transform infrared (FTIR) spectroscopy in attenuated total reflection (ATR) geometry. The results show the pathway for reduction of PC leads nearly entirely to lithium carbonate as the solid product (and presumably propylene gas as the co-product) while EC follows a path producing a mixture of organic and inorganic compounds. Possible explanations for the difference in reaction pathway are discussed. (c) 2005 The Electrochemical Society. All rights reserved. C1 Lawrence Berkeley Natl Lab, Div Sci Mat, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. RP Zhuang, GV (reprint author), Lawrence Berkeley Natl Lab, Div Sci Mat, Berkeley, CA 94720 USA. EM GVZhuang@lbl.gov RI Yang, Hui/B-3249-2012 OI Yang, Hui/0000-0003-4035-8894 NR 21 TC 46 Z9 46 U1 6 U2 39 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA SN 1099-0062 J9 ELECTROCHEM SOLID ST JI Electrochem. Solid State Lett. PY 2005 VL 8 IS 9 BP A441 EP A445 DI 10.1149/a.1979327 PG 5 WC Electrochemistry; Materials Science, Multidisciplinary SC Electrochemistry; Materials Science GA 955WY UT WOS:000231259500003 ER PT J AU Barela, MJ Brevnov, DA Bauer, TM Lopez, GP Atanassov, PB AF Barela, MJ Brevnov, DA Bauer, TM Lopez, GP Atanassov, PB TI Fabrication of patterned arrays with alternating regions of aluminum and porous aluminum oxide SO ELECTROCHEMICAL AND SOLID STATE LETTERS LA English DT Article ID ANODIC ALUMINA; NANOTUBES; PHYSICS; GROWTH AB Fabrication of patterned anodic aluminum oxide arrays using a dense layer of barrier aluminum oxide as the anodization mask is described. This fabrication process includes patterning of the aluminum film with a photoresist and brief anodization at a high voltage. The photoresist is then removed and the aluminum film is again anodized at a low voltage to grow porous aluminum oxide. Using this procedure, we are able to fabricate anodic aluminum oxide arrays on silicon wafers consisting of alternating regions of porous aluminum oxide and aluminum metal perpendicular to the silicon substrate. (C) 2004 The Electrochemical Society. C1 Univ New Mexico, Dept Chem & Nucl Engn, Ctr Microengn Mat, Albuquerque, NM 87131 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Univ New Mexico, Dept Chem & Nucl Engn, Ctr Microengn Mat, Albuquerque, NM 87131 USA. EM plamen@unm.edu RI Atanassov, Plamen/G-4616-2011 NR 16 TC 12 Z9 12 U1 1 U2 5 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA SN 1099-0062 EI 1944-8775 J9 ELECTROCHEM SOLID ST JI Electrochem. Solid State Lett. PY 2005 VL 8 IS 1 BP C4 EP C5 DI 10.1149/1.1828353 PG 2 WC Electrochemistry; Materials Science, Multidisciplinary SC Electrochemistry; Materials Science GA 916BD UT WOS:000228356800021 ER PT J AU Mintz, TS Bhargava, YV Thorne, SA Chopdekar, R Radmilovic, V Suzuki, Y Devine, TM AF Mintz, TS Bhargava, YV Thorne, SA Chopdekar, R Radmilovic, V Suzuki, Y Devine, TM TI Electrochemical synthesis of functionalized nickel oxide nanowires SO ELECTROCHEMICAL AND SOLID STATE LETTERS LA English DT Article ID LIQUID-SOLID MECHANISM; MESOPOROUS SILICA; CRYSTAL GROWTH; NIO; NANOSTRUCTURES; ARRAYS; NANOWHISKERS; NANOSENSORS; ABSORPTION; SCATTERING AB Bulk quantities of self-assembled, functionalized nickel oxide nanowires (lengths <= 20 mu m; mean diameter 25 nm) have been grown by a novel electrochemical method consisting of multistep oxidation of Ni-Cr alloys in high-temperature, pressurized water. Nanowires form when growth results in a deficit of OH- in the electrolyte ahead of the growing NiO. The compositional gradient breaks up the planar NiO/water interface into a cellular interface, resulting in the growth of NiO nanowires. (c) 2005 The Electrochemical Society. C1 Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA. RP Mintz, TS (reprint author), Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. EM devine@socrates.berkeley.edu RI Chopdekar, Rajesh/D-2067-2009 OI Chopdekar, Rajesh/0000-0001-6727-6501 NR 32 TC 20 Z9 20 U1 0 U2 10 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA SN 1099-0062 J9 ELECTROCHEM SOLID ST JI Electrochem. Solid State Lett. PY 2005 VL 8 IS 9 BP D26 EP D30 DI 10.1149/1.1996511 PG 5 WC Electrochemistry; Materials Science, Multidisciplinary SC Electrochemistry; Materials Science GA 955WY UT WOS:000231259500025 ER PT J AU Jo, HC Kim, KM Cheong, H Lee, SH Deb, SK AF Jo, HC Kim, KM Cheong, H Lee, SH Deb, SK TI In situ Raman spectroscopy of RuO2 center dot xH(2)O SO ELECTROCHEMICAL AND SOLID STATE LETTERS LA English DT Article ID ELECTROCHEMICAL CAPACITORS; CHARGE STORAGE; MECHANISM AB Raman spectra of amorphous hydrated ruthenium oxide (RuO2 center dot xH(2)O) thin films were measured in situ during electrochemical charging/discharging cycles. As hydrogen was intercalated into the films, a peak at 590 cm(-1) emerged. The emergence of this peak was accompanied by a decrease of a peak at 700 cm(-1). To investigate the origins of the Raman peaks, isotope effects were studied using deuterated samples. Most of the Raman peaks showed no shift due to the heavier mass of deuterium, indicating that these peaks do not come from vibrations that involve hydrogen ions. Based on the changes in the Raman spectra, we conclude that the major effect upon intercalation of hydrogen is reduction of Ru4+ ions to Ru3+, and not creations of new chemical bonds. (C) 2005 The Electrochemical Society. C1 Sogang Univ, Dept Phys, Seoul 121742, South Korea. Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Jo, HC (reprint author), Sogang Univ, Dept Phys, Seoul 121742, South Korea. EM hcheong@sogang.ac.kr RI Lee, Sehee/A-5989-2011; Cheong, Hyeonsik/D-7424-2012 OI Cheong, Hyeonsik/0000-0002-2347-4044 NR 9 TC 12 Z9 12 U1 1 U2 13 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA SN 1099-0062 J9 ELECTROCHEM SOLID ST JI Electrochem. Solid State Lett. PY 2005 VL 8 IS 4 BP E39 EP E41 DI 10.1149/1.1865673 PG 3 WC Electrochemistry; Materials Science, Multidisciplinary SC Electrochemistry; Materials Science GA 915SL UT WOS:000228326500021 ER PT J AU Park, NM Kim, TY Kim, KH Sung, GY Cho, KS Shin, JH Kim, BH Park, SJ Lee, JK Nastasi, M AF Park, NM Kim, TY Kim, KH Sung, GY Cho, KS Shin, JH Kim, BH Park, SJ Lee, JK Nastasi, M TI Hydrogenation effect on the Er luminescence in amorphous silicon quantum dot films SO ELECTROCHEMICAL AND SOLID STATE LETTERS LA English DT Article ID ERBIUM-DOPED SILICON; 1.54 MU-M; ELECTROLUMINESCENCE; OXIDE AB The hydrogenation effect on the Er luminescence at 1.54 mum in an Er-doped amorphous Si quantum dot film was investigated. After hydrogenation, the luminescent properties were different between large-dot (2.5 nm) and small-dot (1.4 nm) samples. In particular, the number of optically active Er ions was increased in a large-dot sample, but decreased in a small-dot sample. We propose that the hydrogenation causes the Er migration toward an Si dot, and the luminescent property depending on the dot size is originated from the number of Er ions near an Si dot before hydrogenation. (C) 2005 The Electrochemical Society. C1 Elect & Telecommun Res Inst, Future Technol Res Div, Taejon 305350, South Korea. Korea Adv Inst Sci & Technol, Dept Phys, Taejon 305701, South Korea. Gwangju Inst Sci & Technol, Dept Mat Sci & Engn, Kwangju 500712, South Korea. Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. RP Park, NM (reprint author), Elect & Telecommun Res Inst, Future Technol Res Div, Taejon 305350, South Korea. EM nmpark@etri.re.kr RI Shin, Jung Hoon/C-1551-2011; jiseon, seo/N-1516-2015 NR 10 TC 3 Z9 3 U1 0 U2 1 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA SN 1099-0062 J9 ELECTROCHEM SOLID ST JI Electrochem. Solid State Lett. PY 2005 VL 8 IS 2 BP G63 EP G64 DI 10.1149/1.1850399 PG 2 WC Electrochemistry; Materials Science, Multidisciplinary SC Electrochemistry; Materials Science GA 887GN UT WOS:000226293900040 ER PT J AU Zuo, CD Lee, TH Song, SJ Chen, L Dorris, SE Balachandran, U Liu, ML AF Zuo, CD Lee, TH Song, SJ Chen, L Dorris, SE Balachandran, U Liu, ML TI Hydrogen permeation and chemical stability of cermet [Ni-Ba(Zr0.8-xCexY0.2)O-3] membranes SO ELECTROCHEMICAL AND SOLID STATE LETTERS LA English DT Article ID PROTONIC CONDUCTION; SOLID-SOLUTIONS; TRANSPORT; OXIDES AB Successful development of hydrogen separation membranes based on mixed ionic and electronic conductors would improve the economics of hydrogen production. The combination of high proton conductivity and good chemical stability is desirable for practical applications. In this paper, we report a new compound, BZCY6 [Ba(Zr0.2Ce0.6Y0.2)O-3], as an alternative to BCY20 (BaCe0.8Y0.2O3). The hydrogen permeation rate and chemical stability of the Ni-BZCY6 membrane were studied under various conditions. It appears that the membrane is stable in atmospheres containing up to 30% CO2 at 900 C. These results suggest that the Ni-BZCY6 membrane is suitable for hydrogen separation from hydrocarbon fuels. (c) 2005 The Electrochemical Society. C1 Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA. Argonne Natl Lab, Energy Technol Div, Argonne, IL 60439 USA. RP Zuo, CD (reprint author), Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA. EM dorris@anl.gov RI Zuo, Chendong/A-3976-2011; zuo, chendong/A-7006-2011; Liu, Meilin/E-5782-2010 OI Liu, Meilin/0000-0002-6188-2372 NR 10 TC 32 Z9 32 U1 1 U2 14 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA SN 1099-0062 J9 ELECTROCHEM SOLID ST JI Electrochem. Solid State Lett. PY 2005 VL 8 IS 12 BP J35 EP J37 DI 10.1149/1.2081807 PG 3 WC Electrochemistry; Materials Science, Multidisciplinary SC Electrochemistry; Materials Science GA 975XQ UT WOS:000232697800032 ER PT S AU Fryer, CL Hungerford, A AF Fryer, CL Hungerford, A BE Baykal, A Yerli, SK Inam, SC Grebenev, S TI Neutron star formation - Constraints from/on neutron star populations SO ELECTROMAGNETIC SPECTRUM OF NEUTRON STARS SE NATO Science Series II-Mathematics Physics and Chemistry LA English DT Proceedings Paper CT 6th NATO-Advanced-Study-Institute on Electromagnetic Spectrum of Neutron Stars CY JUN 07-18, 2004 CL Marmaris, TURKEY DE stars : supernovae; stars : neutron; stars : formation ID CORE-COLLAPSE SUPERNOVAE; ROTATING MASSIVE STARS; STELLAR COLLAPSE; KICKS; EXPLOSION; EVOLUTION AB The nature of a neutron star differs based on whether the neutron star formed from the collapse of a white dwarf, the collapse of a similar to 8 - 11M(circle dot) star, or the collapse of a more massive star (similar to 11 - 20M(circle dot)). Although the details of the supernova mechanism are not understood completely, the intuition we have gained from modeling stellar collapse does allow us to understand many of the qualitative features of stellar collapse. Here we review the basic neutron star formation scenarios and apply our understanding of these formation processes to constrain neutron star kick mechanisms and their relation to supernova asymmetries as well as the relation between stellar rotation and neutron star magnetic fields. We conclude with a discussion of the constraints placed by observed populations of pulsars and magnetars. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Los Alamos Natl Lab, T-6, Los Alamos, NM 87545 USA. EM fryer@lanl.gov; aimee@lanl.gov NR 35 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES SN 1568-2609 BN 1-4020-3859-3 J9 NATO SCI SER II-MATH PY 2005 VL 210 BP 3 EP 14 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BDS01 UT WOS:000235158900001 ER PT B AU Hungerford, AL Fryer, CL Socrates, A Blaes, O AF Hungerford, AL Fryer, CL Socrates, A Blaes, O BE Baykal, A Yerli, SK Inam, SC Grebenev, S TI Proto-neutron star neutrino emission SO Electromagnetic Spectrum of Neutron Stars SE NATO SCIENCE SERIES, SERIES II: MATHEMATICS, PHYSICS AND CHEMISTRY LA English DT Proceedings Paper CT 6th NATO-Advanced-Study-Institute on Electromagnetic Spectrum of Neutron Stars CY JUN 07-18, 2004 CL Marmaris, TURKEY DE stars : neutron; neutrinos; instabilities; stars : kinematics ID NUCLEOSYNTHESIS; SIMULATIONS; SUPERNOVAE; WINDS AB Neutrino spectra during the cooling phase of neutron stars provide a relatively direct probe of the physics in the hot, dense interiors of these compact objects. Details of the equation of state and instabilities in these extreme physical regimes have a significant affect on the properties of the emitted neutrino spectrum. In addition to the direct ramifications for the cooling time, the natal kicks observed in young pulsars may be the result of asymmetric neutrino emission due to opacity variations within the neutron star itself. Furthermore, such asymmetries in the emission are also reflected in neutrino deposition, resulting in asymmetrically driven winds above the proto-neutron stars where r-process elements are thought to be synthesized. In this proceedings, we present preliminary results from a study of the neutrino emission from neutron stars, including asymmetries arising from magnetoacoustic instabilities and neutron star rotation. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Hungerford, AL (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 10 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES BN 1-4020-3859-3 J9 NATO SCI SER II MATH PY 2005 VL 210 BP 111 EP 114 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BDS01 UT WOS:000235158900012 ER PT S AU Kleiman, U Colgan, J Pindzola, MS Robicheaux, F AF Kleiman, U Colgan, J Pindzola, MS Robicheaux, F BE Piraux, B Piraux, B TI Multiple photoionization of atoms and ions using the time-dependent close-coupling method SO ELECTRON AND PHOTON IMPACT IONIZATION AND RELATED TOPICS 2004 SE INSTITUTE OF PHYSICS CONFERENCE SERIES LA English DT Article; Proceedings Paper CT International Conference on Electron and Photon Impact Ionization and Related Topics CY JUL 01-03, 2004 CL Louvain la Neuve, BELGIUM ID HELIUM ISOELECTRONIC SEQUENCE; DIFFERENTIAL CROSS-SECTIONS; TRIPLE-PHOTOIONIZATION; DOUBLE-IONIZATION; NEAR-THRESHOLD; PHOTON ENERGY; EXCITATION; LITHIUM; HE; SINGLE AB Numerical calculations of partial cross sections for photoionization with excitation and total cross sections for double photoionization of the two-electron systems He and Li+ have been performed employing the time-dependent close-coupling method. The calculations include one-photon ionization processes from both the ground state 1s(2) S-1 and the two lowest metastable excited states 1s2s S-1,S-3. For the ground state 1s(2)2s S-2 of the three-electron system Li, partial cross sections for double photoionization with excitation and total cross sections for triple photoionization are presented. C1 Auburn Univ, Dept Phys, Allison Lab 206, Auburn, AL 36849 USA. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Kleiman, U (reprint author), Auburn Univ, Dept Phys, Allison Lab 206, Auburn, AL 36849 USA. RI Robicheaux, Francis/F-4343-2014; OI Robicheaux, Francis/0000-0002-8054-6040; Colgan, James/0000-0003-1045-3858 NR 44 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0951-3248 BN 0-7503-1009-X J9 INST PHYS CONF SER PY 2005 IS 183 BP 131 EP 140 PG 10 WC Physics, Atomic, Molecular & Chemical; Physics, Multidisciplinary SC Physics GA BCF43 UT WOS:000229037300014 ER PT S AU Leitner, D Lyneis, CM Abbott, SR Dwinell, RD Collins, D Leitner, M AF Leitner, D Lyneis, CM Abbott, SR Dwinell, RD Collins, D Leitner, M BE Leitner, M TI First results of the superconducting ECR ion source Venus with 28 GHz SO Electron Cyclotron Resonance Ion Sources SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 16th International Workshop on ECR Ion Sources CY SEP 26-30, 2004 CL Berkeley, CA SP Lawrence Berkeley Natl Lab, Commun & Power Ind, Isoflex Isotopes, GMW Assoc, Ion Beam Equipment ID BEAMS AB VENUS (Versatile ECR ion source for NUclear Science) is a next generation superconducting ECR ion source, designed to produce high current, high charge state ions for the 88-Inch Cyclotron at the Lawrence Berkeley National Laboratory. VENUS also serves as the prototype ion source for the RIA (Rare Isotope Accelerator) front end. The magnetic confinement configuration consists of three superconducting axial coils and six superconducting radial coils in a sextupole configuration. The nominal design fields of the axial magnets are 4T at injection and 3T at extraction; the nominal radial design field strength at the plasma chamber wall is 2T, making VENUS the world most powerful ECR plasma confinement structure. From the beginning, VENUS has been designed for optimum operation at 28 GHz with high power (10 kW). In 2003 the VENUS ECR ion source was commissioned at 18 GHz, while preparations for 28 GHz operation were being conducted. During this commissioning phase with 18 GHz, tests with various gases and metals have been performed with up to 2000 W RF power. At the initial commissioning tests at 18 GHz, 1100 e mu A of O6+, 160 e mu A of Xe20+, 160 e mu A of Bi25+ and 100 e mu A of Bi30+ and 11 e mu A of Bi41+ were produced. In May 2004 the 28 GHz microwave power has been coupled into the VENUS ECR ion source. At initial operation more than 320 e mu A of Xe20+ (twice the amount extracted at 18 GHz), 240 e mu A of Bi24+ and Bi25+, and 245 e mu A of Bi29+ were extracted. The paper briefly describes the design of the VENUS source, the 28 GHz microwave system and its beam analyzing system. First results at 28 GHz including emittance measurements are presented. C1 Lawrence Berkeley Lab, Berkeley, CA 94708 USA. RP Leitner, D (reprint author), Lawrence Berkeley Lab, 1 Cyclotron Rd,MS88R0192, Berkeley, CA 94708 USA. NR 15 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 0-7354-0234-5 J9 AIP CONF PROC PY 2005 VL 749 BP 3 EP 9 PG 7 WC Instruments & Instrumentation; Physics, Fluids & Plasmas SC Instruments & Instrumentation; Physics GA BBZ81 UT WOS:000228412900001 ER PT S AU Vondrasek, R Scott, R Pardo, R Koivisto, H Tarvainen, O Suominen, P Edgell, DH AF Vondrasek, R Scott, R Pardo, R Koivisto, H Tarvainen, O Suominen, P Edgell, DH BE Leitner, M TI ECRIS operation with multiple frequencies SO Electron Cyclotron Resonance Ion Sources SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 16th International Workshop on ECR Ion Sources CY SEP 26-30, 2004 CL Berkeley, CA SP Lawrence Berkeley Natl Lab, Commun & Power Ind, Isoflex Isotopes, GMW Assoc, Ion Beam Equipment AB The usefulness of two-frequency heating for the production of high-charge state high-intensity beams from an ECRIS has been well established. Factors of 2 -> 5 increase in beam currents have been observed accompanied by a shift to higher charge states. The ECRIS at Argonne National Laboratory has been routinely operated utilizing a 14 GHz klystron and a tunable 11 - 13 GHz: traveling wave tube amplifier (TWTA) and the operating characteristics of the source are well known. However, the characteristics of the multi-frequency heated plasma are less well known. Investigations regarding the changes in the source production have been taking place at Argonne National Laboratory. Parameters such as the charge state distribution (CSD), production times and plasma potential have been measured for a multi-frequency heated plasma with emphasis being given to the effect of the frequency gap between the two RF waves. It has been found that the production times decrease in multi-frequency mode with a corresponding increase in the CSD and the overall beam output. At the same time, the plasma potential appears to not change significantly. It has also been found that a larger frequency gap (14.0 and 10.84 GHz), while producing higher charge-state ions, produces less overall beam of the material of interest but reaches equilibrium more quickly when compared to a smaller gap (14.0 and 12.31 GHz). Possible mechanisms for the observed behavior will be discussed. C1 Argonne Natl Lab, Argonne, IL 60439 USA. RP Vondrasek, R (reprint author), Argonne Natl Lab, Argonne, IL 60439 USA. NR 6 TC 4 Z9 4 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 0-7354-0234-5 J9 AIP CONF PROC PY 2005 VL 749 BP 31 EP 34 PG 4 WC Instruments & Instrumentation; Physics, Fluids & Plasmas SC Instruments & Instrumentation; Physics GA BBZ81 UT WOS:000228412900007 ER PT S AU Grote, DP Friedman, A Vay, JL Haber, I AF Grote, DP Friedman, A Vay, JL Haber, I BE Leitner, M TI The WARP code: Modeling high intensity ion beams SO Electron Cyclotron Resonance Ion Sources SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 16th International Workshop on ECR Ion Sources CY SEP 26-30, 2004 CL Berkeley, CA SP Lawrence Berkeley Natl Lab, Commun & Power Ind, Isoflex Isotopes, GMW Assoc, Ion Beam Equipment ID SIMULATION AB The Warp code, developed for heavy-ion driven inertial fusion energy studies, is used to model high intensity ion (and electron) beams. Significant capability has been incorporated in Warp, allowing nearly all sections of an accelerator to be modeled, beginning with the source. Warp has as its core an explicit, three-dimensional, particle-in-cell model. Alongside this is a rich set of tools for describing the applied fields of the accelerator lattice, and embedded conducting surfaces (which are captured at sub-grid resolution). Also incorporated are models with reduced dimensionality: an axisymmetric model and a transverse "slice" model. The code takes advantage of modem programming techniques, including object orientation, parallelism, and scripting (via Python). It is at the forefront in the use of the computational technique of adaptive mesh refinement, which has been particularly successful in the area of diode and injector modeling, both steady-state and time-dependent. In the presentation, some of the major aspects of Warp will be overviewed, especially those that could be useful in modeling ECR sources. Warp has been benchmarked against both theory and experiment. Recent results will be presented showing good agreement of Warp with experimental results from the STS500 injector test stand. Additional information can be found on the web page http://hif.lbl.gov/theory/WARP_summary.html. C1 LLNL, Livermore, CA USA. RP Grote, DP (reprint author), LLNL, Livermore, CA USA. NR 4 TC 59 Z9 59 U1 1 U2 6 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0234-5 J9 AIP CONF PROC PY 2005 VL 749 BP 55 EP 58 PG 4 WC Instruments & Instrumentation; Physics, Fluids & Plasmas SC Instruments & Instrumentation; Physics GA BBZ81 UT WOS:000228412900011 ER PT S AU Savard, G Pardo, RC Moore, EF Hecht, AA Baker, S AF Savard, G Pardo, RC Moore, EF Hecht, AA Baker, S BE Leitner, M TI Radioactive beams from Cf-252 fission using a gas catcher and an ECR charge breeder at ATLAS SO Electron Cyclotron Resonance Ion Sources SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 16th International Workshop on ECR Ion Sources CY SEP 26-30, 2004 CL Berkeley, CA SP Lawrence Berkeley Natl Lab, Commun & Power Ind, Isoflex Isotopes, GMW Assoc, Ion Beam Equipment AB A proposed upgrade to the radioactive beam capability of the ATLAS facility has been proposed using (252)cf fission fragments thermalized and collected into a low-energy particle beam using a helium gas catcher. In order to reaccelerate these beams the ATLAS ECR-I will be reconfigured as a charge breeder source. A 1Ci Cf-252 source is expected to provide sufficient yield to deliver beams of up to similar to 10(6) far from stability ions per second on target. A brief facility description and the expected performance information are provided in this report. C1 Argonne Natl Lab, Argonne, IL 60439 USA. RP Savard, G (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 10 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 0-7354-0234-5 J9 AIP CONF PROC PY 2005 VL 749 BP 75 EP 78 PG 4 WC Instruments & Instrumentation; Physics, Fluids & Plasmas SC Instruments & Instrumentation; Physics GA BBZ81 UT WOS:000228412900015 ER PT S AU Schlachter, AS Kilcoyne, ALD Aguilar, A Gharaibeh, MF Emmons, ED Scully, SWJ Phaneuf, RA Muller, A Schippers, S Alvarez, I Cisneros, C Hinojosa, G McLaughlin, BM AF Schlachter, AS Kilcoyne, ALD Aguilar, A Gharaibeh, MF Emmons, ED Scully, SWJ Phaneuf, RA Muller, A Schippers, S Alvarez, I Cisneros, C Hinojosa, G McLaughlin, BM BE Leitner, M TI Photoionization of multiply light charged ions at the advanced source SO Electron Cyclotron Resonance Ion Sources SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 16th International Workshop on ECR Ion Sources CY SEP 26-30, 2004 CL Berkeley, CA SP Lawrence Berkeley Natl Lab, Commun & Power Ind, Isoflex Isotopes, GMW Assoc, Ion Beam Equipment ID RESONANCE; THRESHOLD; ECR AB Photoionization of multiply charged ions is studied using the merged-beams technique at the Advanced Light Source. An ion beam is created using a compact 10-GHz all-permanent-magnet ECR ion source and is accelerated with a small accelerator. The ion beam is merged with a photon beam from an undulator to allow interaction over an extended path. Absolute photoionization cross sections have been measured for a variety of ions along both isoelectronic and isonuclear sequences. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA. RP Schlachter, AS (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA. RI Muller, Alfred/A-3548-2009; Schippers, Stefan/A-7786-2008 OI Muller, Alfred/0000-0002-0030-6929; Schippers, Stefan/0000-0002-6166-7138 NR 17 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 0-7354-0234-5 J9 AIP CONF PROC PY 2005 VL 749 BP 88 EP 91 PG 4 WC Instruments & Instrumentation; Physics, Fluids & Plasmas SC Instruments & Instrumentation; Physics GA BBZ81 UT WOS:000228412900018 ER PT S AU Alton, GD Kawai, Y Liu, Y Bilheux, H AF Alton, GD Kawai, Y Liu, Y Bilheux, H BE Leitner, M TI A new method for enhancing the performances of conventional B-geometry ECR ion sources SO Electron Cyclotron Resonance Ion Sources SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 16th International Workshop on ECR Ion Sources CY SEP 26-30, 2004 CL Berkeley, CA SP Lawrence Berkeley Natl Lab, Commun & Power Ind, Isoflex Isotopes, GMW Assoc, Ion Beam Equipment DE electron-cyclotron-resonance; ECR ion source; broadband frequency; "white-noise"; plasma heating ID DESIGN AB The viability of the "volume"-effect for enhancing the high-charge-state populations and intensities of beams extracted from ECR ion sources has been clearly demonstrated at several laboratories. Enlarged ECR zones have been achieved by engineering the central magnetic field so that it is flat and in resonance with single-frequency rf power or alternatively, by using multiple frequency or broadband techniques to enlarge the ECR volumes within these sources. For example, the performances of conventional B-geometry sources have been ameliorated at several laboratories through the use of multiple frequency rf power sources. Although the multiple-discrete frequency method is a very effective means for enhancing the performances of traditional-B geometry sources, the practical application of the technique is very costly, requiring multiple independent single-frequency rf power supplies and serious modification to the if injection systems of these sources. Broadband sources of rf power offer an low-cost and more effective alternative for increasing the physical sizes of the ECR volumes within these sources. Although, previously suggested, here-to-fore, broadband microwave power sources have not been available for use to the ECR ion source community. A special programmable additive "white" Gaussian noise generator (AWGNG) system for injecting broadband rf power into these sources has been conceived and developed in conjunction with a commercial firm for such applications. The noise generator, in combination with an external local oscillator, can be used to generate broadband microwave radiation for amplification with a TWT without having to modify the injection systems of these sources. The AWGNG and its use for enhancing the performances of conventional B-geometry ECR ion sources will be described in this document. C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RP Alton, GD (reprint author), Oak Ridge Natl Lab, Div Phys, POB 2008, Oak Ridge, TN 37831 USA. RI Bilheux, Hassina/H-4289-2012 OI Bilheux, Hassina/0000-0001-8574-2449 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 0-7354-0234-5 J9 AIP CONF PROC PY 2005 VL 749 BP 103 EP 107 PG 5 WC Instruments & Instrumentation; Physics, Fluids & Plasmas SC Instruments & Instrumentation; Physics GA BBZ81 UT WOS:000228412900021 ER PT S AU Stockli, MP Leitner, M Moehs, DP Keller, R Welton, RF AF Stockli, MP Leitner, M Moehs, DP Keller, R Welton, RF BE Leitner, M TI Ghost signals in Allison emittance scanners SO Electron Cyclotron Resonance Ion Sources SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 16th International Workshop on ECR Ion Sources CY SEP 26-30, 2004 CL Berkeley, CA SP Lawrence Berkeley Natl Lab, Commun & Power Ind, Isoflex Isotopes, GMW Assoc, Ion Beam Equipment ID ION-SOURCE; BEAM AB For over 20 years, Allison scanners have been used to measure emittances of low-energy ion beams. We show that scanning large trajectory angles produces ghost signals caused by the sampled beamlet impacting on an electric deflection plate. ne ghost signal strength is proportional to the amount of beam entering the scanner. Depending on the ions, and their velocity, the ghost signals can have the opposite or the same polarity as the main beam signals. The ghost signals cause significant errors in the emittance estimates because they appear at large trajectory angles. These ghost signals often go undetected because they partly overlap with the real signals, are mostly below the 1% level, and often hide in the noise. A simple deflection plate modification is shown to reduce the ghost signal strength by over 99%. C1 Oak Ridge Natl Lab, SNS, Oak Ridge, TN 37831 USA. RP Stockli, MP (reprint author), Oak Ridge Natl Lab, SNS, POB 2008, Oak Ridge, TN 37831 USA. NR 11 TC 4 Z9 4 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 0-7354-0234-5 J9 AIP CONF PROC PY 2005 VL 749 BP 108 EP 111 PG 4 WC Instruments & Instrumentation; Physics, Fluids & Plasmas SC Instruments & Instrumentation; Physics GA BBZ81 UT WOS:000228412900022 ER PT S AU McMahan, MA Leitner, D Powell, J Silver, C AF McMahan, MA Leitner, D Powell, J Silver, C BE Leitner, M TI Radioactive beams using the AECR-U and the 88-inch cyclotron SO Electron Cyclotron Resonance Ion Sources SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 16th International Workshop on ECR Ion Sources CY SEP 26-30, 2004 CL Berkeley, CA SP Lawrence Berkeley Natl Lab, Commun & Power Ind, Isoflex Isotopes, GMW Assoc, Ion Beam Equipment ID ION-BEAMS AB The high ionization efficiency of an Electron Cyclotron Resonance (ECR) ion source combined with the mass resolution of a cyclotron is ideal for the generation of some ISOL-type radioactive ion beams (RIBs). In two separate projects at the 88-Inch Cyclotron at LBNL - BEARS and the Recyclotron - we have developed techniques to efficiently ionize and accelerate beams of gaseous species of C-11 (t(1/2) = 20 min), O-14,O-15 (t(1/2) = 70 sec, 2 min) and 76,79 Kr (t(1/2) = 14,35 hours). Measurements of the ionization efficiency and hold-up times are discussed, along with issues of source contamination and poisoning encountered in running both RIBs and high-intensity stable beam experiments using the same ion source, the LBNL AECR-U. Methods used to tune clean RIBs through the Cyclotron with high efficiency are also discussed, including the use and limitations of analog beams. C1 Lawrence Berkeley Natl Lab, Berkeley, CA USA. RP McMahan, MA (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA USA. NR 4 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0234-5 J9 AIP CONF PROC PY 2005 VL 749 BP 151 EP 154 PG 4 WC Instruments & Instrumentation; Physics, Fluids & Plasmas SC Instruments & Instrumentation; Physics GA BBZ81 UT WOS:000228412900031 ER PT S AU Hahto, SK Leung, KN Reijonen, J Ji, Q Schneider, D Bruch, R Kondagari, S Merabet, H AF Hahto, SK Leung, KN Reijonen, J Ji, Q Schneider, D Bruch, R Kondagari, S Merabet, H BE Leitner, M TI Permanent magnet microwave source for generation of EUV light SO Electron Cyclotron Resonance Ion Sources SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 16th International Workshop on ECR Ion Sources CY SEP 26-30, 2004 CL Berkeley, CA SP Lawrence Berkeley Natl Lab, Commun & Power Ind, Isoflex Isotopes, GMW Assoc, Ion Beam Equipment AB A permanent magnet 6.4 GHz microwave plasma generator has been designed and constructed at Plasma and Ion Source Technology group at Lawrence Berkeley National Laboratory for applications in Extreme Ultraviolet Lithography (EUVL). In order to produce 13.5 nm EUV light, Xenon plasma was formed with the goal of producing Xe10+ ions, which are associated with the formation of 13.5 nm, radiation. The goal was to diagnose the source plasma by extracting Xe- ions from the source plasma and by measuring the EUV light spectrum with a grazing incidence monochromator. 13.5 nm light was observed in the measurements indicating that Xe10+ existed in the plasma. C1 LBNL, Berkeley, CA USA. RP Hahto, SK (reprint author), LBNL, Berkeley, CA USA. NR 3 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0234-5 J9 AIP CONF PROC PY 2005 VL 749 BP 179 EP 182 PG 4 WC Instruments & Instrumentation; Physics, Fluids & Plasmas SC Instruments & Instrumentation; Physics GA BBZ81 UT WOS:000228412900038 ER PT S AU Liu, Y Meyer, FM Cole, JM AF Liu, Y Meyer, FM Cole, JM BE Leitner, M TI Traveling wave vs. cavity RF injection for the ORNL HRIBF volume-type ECR ion source SO Electron Cyclotron Resonance Ion Sources SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 16th International Workshop on ECR Ion Sources CY SEP 26-30, 2004 CL Berkeley, CA SP Lawrence Berkeley Natl Lab, Commun & Power Ind, Isoflex Isotopes, GMW Assoc, Ion Beam Equipment ID DESIGN AB The performance of the ORNL HRIBF volume-type 6 GHz ECR ion source has been significantly enhanced with a new RF injection and cavity configuration: measured charge-state distributions now peak at higher charge states and the intensities of the charge-states > Ar7+ were increased more than a factor of two. Details on the source improvement and comparison of the source performances are given in this report. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Liu, Y (reprint author), Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA. NR 4 TC 1 Z9 1 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0234-5 J9 AIP CONF PROC PY 2005 VL 749 BP 187 EP 190 PG 4 WC Instruments & Instrumentation; Physics, Fluids & Plasmas SC Instruments & Instrumentation; Physics GA BBZ81 UT WOS:000228412900040 ER PT S AU Liu, Y Alton, GD Bilheux, HZ Meyer, FM AF Liu, Y Alton, GD Bilheux, HZ Meyer, FM BE Leitner, M TI Performances of volume versus surface ECR ion sources SO Electron Cyclotron Resonance Ion Sources SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 16th International Workshop on ECR Ion Sources CY SEP 26-30, 2004 CL Berkeley, CA SP Lawrence Berkeley Natl Lab, Commun & Power Ind, Isoflex Isotopes, GMW Assoc, Ion Beam Equipment ID FREQUENCY; DESIGN AB An all-permanent, 6 GHz ECR ion source has been constructed at the Holifield Radioactive Ion Beam Facility (HRIBF), Oak Ridge National Laboratory (ORNL), that permits configuration of the central magnetic field in either conventional parabolic or flat minimum-B profiles. The magnitude of the central flat field configuration extends over an axial region of similar to 2 cm to form a large and uniformly distributed ECR volume. The capability of operating the source in either volume or surface modes permits direct comparison of the performances of each source type. The studies show that the volume ECR source produces higher charge-states and higher intensities within a particular chargestate than does the surface form of the source. The X-ray spectra derived during operation of the source also suggest that the enhanced performance of volume ECR source is attributable to its ability to accelerate a larger population of electrons to higher energies than its conventional counterpart. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Liu, Y (reprint author), Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA. RI Bilheux, Hassina/H-4289-2012 OI Bilheux, Hassina/0000-0001-8574-2449 NR 11 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 0-7354-0234-5 J9 AIP CONF PROC PY 2005 VL 749 BP 191 EP 194 PG 4 WC Instruments & Instrumentation; Physics, Fluids & Plasmas SC Instruments & Instrumentation; Physics GA BBZ81 UT WOS:000228412900041 ER PT S AU Bilheux, HZ Liu, Y Cole, JT Alton, GD AF Bilheux, HZ Liu, Y Cole, JT Alton, GD BE Leitner, M TI Testing of the "Flat-B" 6-ghz ECR ion source equipped with a RF polarizer (Abstract) SO Electron Cyclotron Resonance Ion Sources SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 16th International Workshop on ECR Ion Sources CY SEP 26-30, 2004 CL Berkeley, CA SP Lawrence Berkeley Natl Lab, Commun & Power Ind, Isoflex Isotopes, GMW Assoc, Ion Beam Equipment C1 Oak Ridge Natl Lab, Oak Ridge, TN USA. RP Bilheux, HZ (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN USA. RI Bilheux, Hassina/H-4289-2012 OI Bilheux, Hassina/0000-0001-8574-2449 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 0-7354-0234-5 J9 AIP CONF PROC PY 2005 VL 749 BP 195 EP 195 PG 1 WC Instruments & Instrumentation; Physics, Fluids & Plasmas SC Instruments & Instrumentation; Physics GA BBZ81 UT WOS:000228412900042 ER PT S AU Lyneis, CM Leitner, D AF Lyneis, CM Leitner, D BE Leitner, M TI Preliminary bremstrahlung measurements on VENUS at 18 and 28 GHz SO Electron Cyclotron Resonance Ion Sources SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 16th International Workshop on ECR Ion Sources CY SEP 26-30, 2004 CL Berkeley, CA SP Lawrence Berkeley Natl Lab, Commun & Power Ind, Isoflex Isotopes, GMW Assoc, Ion Beam Equipment C1 Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Lyneis, CM (reprint author), Lawrence Berkeley Lab, 1 Cyclotron Rd, Berkeley, CA 94720 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 0-7354-0234-5 J9 AIP CONF PROC PY 2005 VL 749 BP 206 EP 206 PG 1 WC Instruments & Instrumentation; Physics, Fluids & Plasmas SC Instruments & Instrumentation; Physics GA BBZ81 UT WOS:000228412900046 ER PT S AU Vinogradov, NE Aseev, VN Kern, MRL Ostroumov, PN Pardo, RC Scott, R Vondrasek, RC AF Vinogradov, NE Aseev, VN Kern, MRL Ostroumov, PN Pardo, RC Scott, R Vondrasek, RC BE Leitner, M TI 2Q-LEBT prototype for the RIA facility SO Electron Cyclotron Resonance Ion Sources SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 16th International Workshop on ECR Ion Sources CY SEP 26-30, 2004 CL Berkeley, CA SP Lawrence Berkeley Natl Lab, Commun & Power Ind, Isoflex Isotopes, GMW Assoc, Ion Beam Equipment AB The Rare Isotope Accelerator (RIA) facility utilizes the concept of simultaneous acceleration of two charge states from the ion source. We are building a prototype two charge-state (2Q) injector of the RIA Driver Linac, which includes an ECR ion source, a LEBT and one-segment of the prototype RFQ. Currently, the 2Q-LEBT Facility consists of Berkeley Ion Equipment Corporation BIE-100 ECR ion source. The rf transmitters, high voltage power supplies, turbo pumps and other related equipment were received with the source. BIE-100 is an all-permanent-magnet source and has the highest magnetic field strengths for an ECR ion source of this type ever built. The magnetic field achieves a maximum strength of 11 kG at the plasma chamber surface and 13 kG on the axis. The source can operate with two-frequency plasma heating of 12.75 and 14.5 GHz. The reassembly of the source has been completed and beam production was achieved in the June 2004. This report includes measured beam current and emittance for O-16 from the source along with the beam dynamics simulations. Detailed design of the 2Q-LEBT and the current project status are also presented. C1 Argonne Natl Lab, Argonne, IL 60439 USA. RP Vinogradov, NE (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 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 0-7354-0234-5 J9 AIP CONF PROC PY 2005 VL 749 BP 215 EP 218 PG 4 WC Instruments & Instrumentation; Physics, Fluids & Plasmas SC Instruments & Instrumentation; Physics GA BBZ81 UT WOS:000228412900049 ER PT S AU Kawai, Y Liu, Y Alton, GD Bilheux, HZ Cole, JM AF Kawai, Y Liu, Y Alton, GD Bilheux, HZ Cole, JM BE Leitner, M TI Plasma potential measurements, for a "volume"-type ECR ion source SO Electron Cyclotron Resonance Ion Sources SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 16th International Workshop on ECR Ion Sources CY SEP 26-30, 2004 CL Berkeley, CA SP Lawrence Berkeley Natl Lab, Commun & Power Ind, Isoflex Isotopes, GMW Assoc, Ion Beam Equipment AB A "volume"-type ECRIS, based on the flat central-field (flat-B) concept, has been developed at the Holifield Radioactive Ion Beam Facility, Oak Ridge National Laboratory. The superiority of the "volume-type" ECRIS concept over its conventional minimum-B source counterpart, in terms of higher charge-state and intensity within a particular charge-state, has clearly been demonstrated. As evidenced by comparing X-ray spectra for the two source geometries, improvements in charge-state and intensity within a particular charge-state are directly attributable to the increased physical "volume" of the ECR zone in the flat-B source that provides better coupling of RF power to the plasma, resulting in the acceleration of a much larger population of electrons to much higher energies. In this report, we provide plasma potential measurement data, made at various gas pressures, gas mixing ratios, and RF power, for the flat-B source. The plasma potential is found to increase with pressure and RF power, and to decrease with increase in gas mixing ratio whenever He gas is used as the mixing gas. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Kawai, Y (reprint author), Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA. RI Bilheux, Hassina/H-4289-2012 OI Bilheux, Hassina/0000-0001-8574-2449 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 0-7354-0234-5 J9 AIP CONF PROC PY 2005 VL 749 BP 223 EP 226 PG 4 WC Instruments & Instrumentation; Physics, Fluids & Plasmas SC Instruments & Instrumentation; Physics GA BBZ81 UT WOS:000228412900051 ER PT S AU van Benthem, K Peng, YP Pennycook, SJ AF van Benthem, K Peng, YP Pennycook, SJ BE Martin, DC Muller, DA Midgley, PA Stach, EA TI Tomographic imaging of nanocrystals by aberration-corrected scanning transmission electron microscopy SO Electron Microscopy of Molecular and Atom-Scale Mechanical Behavior, Chemistry and Structure SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on Electron Microscopy of Molecular and Atom-Scale Mechanical Behavior, Chemistry and Structure held at the 2004 MRS Fall Meeting CY NOV 29-DEC 01, 2004 CL Boston, MA SP Mat Res Soc ID RESOLUTION AB In aberration corrected scanning transmission electron microscopy, the depth of focus is of the order of a few nanometers, so that the three-dimensional shape of nanocrystals could so far not be determined with atomic resolution. Here we show that with the assistance of image simulations it is possible to achieve atomic-scale information in the depth direction by analyzing a through-focal series where the number of atoms in most columns can-be determined by Z-contrast simulations. The error in this analysis is about two atoms in the thickest regions, and less in thinner regions. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP van Benthem, K (reprint author), Oak Ridge Natl Lab, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA. NR 6 TC 2 Z9 2 U1 0 U2 0 PU MATERIALS RESEARCH SOCIETY PI WARRENDALE PA 506 KEYSTONE DRIVE, WARRENDALE, PA 15088-7563 USA SN 0272-9172 BN 1-55899-787-3 J9 MATER RES SOC SYMP P PY 2005 VL 839 BP 3 EP 7 PG 5 WC Materials Science, Multidisciplinary; Materials Science, Characterization & Testing SC Materials Science GA BCR54 UT WOS:000230926900001 ER PT S AU Ziegler, A Idrobo, JC Cinibulk, MK Kisielowski, C Browning, ND Ritchie, RO AF Ziegler, A Idrobo, JC Cinibulk, MK Kisielowski, C Browning, ND Ritchie, RO BE Martin, DC Muller, DA Midgley, PA Stach, EA TI High-resolution interface atomic structure analysis in silicon nitride ceramics SO Electron Microscopy of Molecular and Atom-Scale Mechanical Behavior, Chemistry and Structure SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on Electron Microscopy of Molecular and Atom-Scale Mechanical Behavior, Chemistry and Structure held at the 2004 MRS Fall Meeting CY NOV 29-DEC 01, 2004 CL Boston, MA SP Mat Res Soc ID INTERGRANULAR FILM THICKNESS; ELECTRONIC-STRUCTURE; BETA-SIALONS; GLASS; MICROSCOPE; ADDITIVES; MECHANISM; STRENGTH; ALUMINA; GROWTH AB In this study we examine the immediate interface between matrix grains and the amorphous intergranular film in a Si3N4 ceramic doped with rare-earth oxides La2O3, Sm2O3, Er2O3, Yb2O3 and Lu2O3, extracting unique structural and atomic bonding information. In particular, we relate the structure of the interface to the ionic size and electronic structure of the rare-earth elements and the presence of oxygen in the intergranular film. We relate these results to the measured fracture toughness. C1 Lawrence Berkeley Natl Lab, Div Sci Mat, Berkeley, CA 94720 USA. RP Ziegler, A (reprint author), Lawrence Berkeley Natl Lab, Div Sci Mat, Berkeley, CA 94720 USA. RI Ritchie, Robert/A-8066-2008; Idrobo, Juan/H-4896-2015; OI Ritchie, Robert/0000-0002-0501-6998; Idrobo, Juan/0000-0001-7483-9034; Browning, Nigel/0000-0003-0491-251X NR 26 TC 0 Z9 0 U1 0 U2 0 PU MATERIALS RESEARCH SOCIETY PI WARRENDALE PA 506 KEYSTONE DRIVE, WARRENDALE, PA 15088-7563 USA SN 0272-9172 BN 1-55899-787-3 J9 MATER RES SOC SYMP P PY 2005 VL 839 BP 23 EP 28 PG 6 WC Materials Science, Multidisciplinary; Materials Science, Characterization & Testing SC Materials Science GA BCR54 UT WOS:000230926900004 ER PT S AU Ziegler, A McNaney, JM Hoffmann, MJ Ritchie, RO AF Ziegler, A McNaney, JM Hoffmann, MJ Ritchie, RO BE Martin, DC Muller, DA Midgley, PA Stach, EA TI On the effect of local grain-boundary chemistry on the macroscopic mechanical properties of a high purity Y2O3-Al2O3-containing silicon nitride ceramic SO Electron Microscopy of Molecular and Atom-Scale Mechanical Behavior, Chemistry and Structure SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on Electron Microscopy of Molecular and Atom-Scale Mechanical Behavior, Chemistry and Structure held at the 2004 MRS Fall Meeting CY NOV 29-DEC 01, 2004 CL Boston, MA SP Mat Res Soc ID INTERGRANULAR FILM THICKNESS; PHASE CRYSTALLIZATION; EQUILIBRIUM THICKNESS; OXYNITRIDE GLASSES; MICROSTRUCTURE; OXIDATION; STRENGTH; WHISKERS AB The effects of grain-boundary chemistry on the mechanical properties of a high-purity silicon nitride ceramics were investigated, with specific emphasis on the role of oxygen. Variations in the grain-boundary oxygen content, through control of oxidizing heat treatments and sintering additives, Was found to result in a transition in fracture mechanism from transgranular to intergranular fracture, with an associated increase in fracture toughness. This phenomenon is correlated to an oxygen-induced change in grain-boundary chemistry that appears to affect fracture by "weakening" the interface, facilitating debonding and crack advance along the boundaries, thereby enhancing the toughness by grain bridging. It is concluded that if the oxygen content in the thin grain-boundary films exceeds a lower limit, which is similar to 0.87 equiv% oxygen content, then the interfacial structure And bonding characteristics favor intergranular debonding during crack propagation; otherwise, transgranular fracture ensues, with consequent low toughness. C1 Lawerence Berkeley Natl Lab, Div Sci Mat, Berkeley, CA 94720 USA. RP Ziegler, A (reprint author), Lawerence Berkeley Natl Lab, Div Sci Mat, Berkeley, CA 94720 USA. RI Ritchie, Robert/A-8066-2008; McNaney, James/F-5258-2013 OI Ritchie, Robert/0000-0002-0501-6998; NR 25 TC 0 Z9 0 U1 0 U2 0 PU MATERIALS RESEARCH SOCIETY PI WARRENDALE PA 506 KEYSTONE DRIVE, WARRENDALE, PA 15088-7563 USA SN 0272-9172 BN 1-55899-787-3 J9 MATER RES SOC SYMP P PY 2005 VL 839 BP 79 EP 84 PG 6 WC Materials Science, Multidisciplinary; Materials Science, Characterization & Testing SC Materials Science GA BCR54 UT WOS:000230926900013 ER PT S AU Jinschek, JR Calderon, HA Batenburg, KJ Radmilovic, V Kisielowski, C AF Jinschek, JR Calderon, HA Batenburg, KJ Radmilovic, V Kisielowski, C BE Martin, DC Muller, DA Midgley, PA Stach, EA TI Discrete tomography of Ga and InGa particles from RREM image simulation and exit wave reconstruction. SO Electron Microscopy of Molecular and Atom-Scale Mechanical Behavior, Chemistry and Structure SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on Electron Microscopy of Molecular and Atom-Scale Mechanical Behavior, Chemistry and Structure held at the 2004 MRS Fall Meeting CY NOV 29-DEC 01, 2004 CL Boston, MA SP Mat Res Soc ID MICROSCOPE; RESOLUTION; ANGSTROM AB Low-resolution tomography requires recording images. every few degrees. As a consequence, the sample is often degraded after such a procedure. However the required input can be reduced drastically by using knowledge about the position and the number of atoms in each atomic column. This concept has been tested in the present investigation where HREM image simulation (MacTempas) together with exit wave reconstruction (FEI Trueimage) have been performed. A cubeoctahedral nanoparticle is used for the simulation with different compositions i.e., pure, solid Ga and In-Ga particles. Six different zone axes ([111], [1 (1) over bar1], [001], [(1) over bar 10], [ 110], [011]) have been used and the parameters of an aberration corrected microscope (200kV, Cs = 0 mm, resolution 0.5 angstrom). The discrete grid data were determined by constructing a. channeling map from the reconstructed exit wave images. In this special case only three projections [001], [1101, [I 10] were sufficient to find a unique volumetric reconstruction, illustrating the potential of the method. The other projections were used for checking the solution. The comparison between the projected potentials (simulated, input) and the, final result shows that, discrete tomography reconstructs the exact position of all 309 atoms and the three-dimensional shape of the nanocrystal. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA. RP Jinschek, JR (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Natl Ctr Electron Microscopy, 1 Cyclotron Rd,MS 72R0150, Berkeley, CA 94720 USA. NR 13 TC 0 Z9 0 U1 1 U2 2 PU MATERIALS RESEARCH SOCIETY PI WARRENDALE PA 506 KEYSTONE DRIVE, WARRENDALE, PA 15088-7563 USA SN 0272-9172 BN 1-55899-787-3 J9 MATER RES SOC SYMP P PY 2005 VL 839 BP 99 EP 104 PG 6 WC Materials Science, Multidisciplinary; Materials Science, Characterization & Testing SC Materials Science GA BCR54 UT WOS:000230926900016 ER PT B AU Palmer, JA Summers, JL Davis, DW Gallegos, PL Chavez, BD Yang, P Medina, F Wicker, RB AF Palmer, Jeremy A. Summers, Jeffrey L. Davis, Donald W. Gallegos, Phillip L. Chavez, Bart D. Yang, Pin Medina, Francisco Wicker, Ryan B. GP ASME TI Realizing 3-D interconnected direct write electronics within smart stereolithography structures SO Electronic and Photonic Packaging, Integration and Packaging of MICRO/NANO/Electronic Systems LA English DT Proceedings Paper CT ASME International Mechanical Engineering Congress and Exposition CY NOV 05-11, 2005 CL Orlando, FL SP ASME, Proc Ind Div, ASME, Rail Transportat Div, ASME, Noise Control & Acoust Div, ASME, Triol Div, ASME, Pressure Vessels & Piping Div, ASME, Bioengn Div, ASME, Mat Div, ASME, Appl Mech Div, ASME, Fluids Engn Div, ASME, Micro Elect Mech Syst Div, ASME, Heat Transfer Div, ASME, Nucl Engn Div, ASME, Power Div, ASME, Solar Energy Div, ASME, Safety Engn & Risk Anal Div, ASME, Technol & Soc Div, ASME, Adv Energy Syst Div, ASME, Aerosp Div, ASME, Comp & Informat Engn Div DE Direct Write; interconnect; stereo lithography AB Research in rapid prototyping of :nigh-density circuitry (RPHDC) involves integrating direct write (DW) conductive ink dispensing technology with stereo lithography (SL) to manufacture smart structural members With integrated three-dimensional electronics. A significant challenge in this effort is realizing practical three-dimensional interconnect for discrete electronic packages encapsulated within a SL matrix. This paper presents research into SL-encapsulated DW three-dimensional interconnect. Results suggest that robust threedimensional electronics are possible within an integrated DWSL structure. A power supply circuit is demonstrated that converts a 28 VDC input to a 5 VDC output with electromagnetic interference filtering capability. Additional work is necessary to improve resistance of DW interconnect, and planarity of device planes. Strategies for improving resistance of DW ink through localized laser curing and thermal curing are discussed in addition to the encapsulation performance of advanced SL resins. Future work in this area may impact the widely accepted MCM-L and MCM-C multichip module technologies. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Palmer, JA (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 11 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 0-7918-4217-7 PY 2005 BP 287 EP 293 PG 7 WC Engineering, Electrical & Electronic SC Engineering GA BFO15 UT WOS:000243398600040 ER PT S AU Laubscher, BE AF Laubscher, BE BE Kuzmany, H Fink, J Mehring, M Roth, S TI The space elevator SO Electronic Properties of Novel Nanostructures SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 19th International Winterschool and Euroconference on Electronic Properties of Novel Materials CY MAR 12-19, 2005 CL Kirchberg, AUSTRIA SP Bundeminterium Bild, Wissensch Kultur, Austrian Nano Initiat, Forsch Forder Gesell GmbH, Verein Forder Int Winterschulen Kirchberg DE space elevator; breakthrough technology; space access; carbon nanotubes ID CARBON NANOTUBES AB The Space Elevator is conceived to be a carbon nanotube ribbon stretching from an Earth station in the ocean on the equator to far beyond geosynchronous altitude This elevator co-rotates with the Earth. Climbers ascend the ribbon using power beamed from Earth to launch spacecraft in orbit or to other worlds. The requirements of the ribbon material, challenges to the building of the space elevator, deployment and the promise of the space elevator are briefly discussed in this paper. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Laubscher, BE (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 7 TC 0 Z9 0 U1 0 U2 10 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0275-2 J9 AIP CONF PROC PY 2005 VL 786 BP 602 EP 606 PG 5 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA BDI53 UT WOS:000233616400132 ER PT S AU Jensen, K Girit, C Mickelson, W Zettl, A AF Jensen, K Girit, C Mickelson, W Zettl, A BE Kuzmany, H Fink, J Mehring, M Roth, S TI Tunable nanoresonator SO Electronic Properties of Novel Nanostructures SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 19th International Winterschool and Euroconference on Electronic Properties of Novel Materials CY MAR 12-19, 2005 CL Kirchberg, AUSTRIA SP Bundeminterium Bild, Wissensch Kultur, Austrian Nano Initiat, Forsch Forder Gesell GmbH, Verein Forder Int Winterschulen Kirchberg ID CARBON NANOTUBES AB We have created a tunable mechanical nanoscale resonator with potential applications in precise mass, force, position, and frequency measurement. The device consists of a specially prepared multiwalled carbon nanotube (MWNT) suspended between a metal electrode and a mobile, piezo-controlled contact. By exploiting the unique telescoping ability of MWNTs, we controllably slide an inner nanotube core from its outer nanotube casing, effectively changing its length and tuning its flexural resonance frequency. C1 Univ Calif Berkeley, Dept Phys, Ctr Integrated Nanomech Syst, Mol Foundry,Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Jensen, K (reprint author), Univ Calif Berkeley, Dept Phys, Ctr Integrated Nanomech Syst, Mol Foundry,Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RI Zettl, Alex/O-4925-2016; Mickelson, Willi/D-8813-2013 OI Zettl, Alex/0000-0001-6330-136X; Mickelson, Willi/0000-0002-6398-6212 NR 9 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0275-2 J9 AIP CONF PROC PY 2005 VL 786 BP 607 EP 610 PG 4 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA BDI53 UT WOS:000233616400133 ER PT J AU Gilbert, J Hendrickson, B Oliveira, S Pothen, A Toledo, S AF Gilbert, J Hendrickson, B Oliveira, S Pothen, A Toledo, S TI Special volume on combinatorial scientific computing - Dedicated to Alan George on the occasion of his sixtieth birthday SO ELECTRONIC TRANSACTIONS ON NUMERICAL ANALYSIS LA English DT Editorial Material C1 Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA. Sandia Natl Labs, Livermore, CA 94550 USA. Univ Iowa, Iowa City, IA 52242 USA. Old Dominion Univ, Norfolk, VA 23529 USA. Tel Aviv Univ, IL-69978 Tel Aviv, Israel. RP Gilbert, J (reprint author), Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU KENT STATE UNIVERSITY PI KENT PA ETNA, DEPT MATHEMATICS & COMPUTER SCIENCE, KENT, OH 44242-0001 USA SN 1068-9613 J9 ELECTRON T NUMER ANA JI Electron. Trans. Numer. Anal. PY 2005 VL 21 BP VI EP VI PG 1 WC Mathematics, Applied SC Mathematics GA 009XK UT WOS:000235146700002 ER PT J AU Naumann, U Utke, J AF Naumann, U Utke, J TI Optimality-preserving elimination of linearities in Jacobian accumulation SO ELECTRONIC TRANSACTIONS ON NUMERICAL ANALYSIS LA English DT Article DE Jacobian accumulation; linearities; constant folding ID MATRICES AB We consider a mathematical function that is implemented in a high-level programming language such as C or Fortran. This function is assumed to be differentiable in some neighborhood of a set of input arguments. For available local partial derivatives of the arithmetic operators and intrinsic functions provided by the programming language, the Jacobian of the function at the given arguments can be accumulated by using the chain rule. This technique is known as automatic differentiation of numerical programs. Under the above assumptions the values of the local partial derivatives are well defined for given values of the inputs. A code for accumulating the Jacobian matrix that is based on the chain rule takes these partial derivatives as input and computes the nonzero entries of the Jacobian using only scalar multiplications and additions. The exploitation of the associativity of the chain rule or, equivalently, the algebraic properties of the corresponding field (R, *, +) - in particular, associativity of the multiplication and distributivity - to minimize the number of multiplications leads to a combinatorial optimization problem that is widely conjectured to be NP-hard. Several heuristics have been developed for its approximate solution. Their efficiency always depends on the total number of partial derivatives. Linearities in the function lead to constant partial derivatives that do not depend on the input values. We present a specialized constant folding algorithm to decrease the size of the combinatorial problem in order to increase the efficiency of heuristics for its solution. Moreover, we show that this algorithm preserves optimality in the sense that an optimal solution for the reduced problem yields an objective value no worse than that of an optimal solution for the original problem. C1 Univ Aachen, Rhein Westfal TH Aachen, D-52056 Aachen, Germany. Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. RP Univ Aachen, Rhein Westfal TH Aachen, D-52056 Aachen, Germany. EM naumann@stce.rwth-aachen.de; utke@mcs.anl.gov NR 25 TC 2 Z9 2 U1 0 U2 0 PU KENT STATE UNIVERSITY PI KENT PA ETNA, DEPT MATHEMATICS & COMPUTER SCIENCE, KENT, OH 44242-0001 USA SN 1068-9613 J9 ELECTRON T NUMER ANA JI Electron. Trans. Numer. Anal. PY 2005 VL 21 BP 134 EP 150 PG 17 WC Mathematics, Applied SC Mathematics GA 009XK UT WOS:000235146700011 ER PT J AU Griffiths, SK Nilson, RH AF Griffiths, SK Nilson, RH TI The efficiency of electrokinetic pumping at a condition of maximum work SO ELECTROPHORESIS LA English DT Article DE electrokinetic pumping; electroosmotic; miniaturization ID GLASS ELECTROOSMOTIC PUMPS; HIGH-PRESSURE; FLOW; CAPILLARIES; TRANSPORT AB Numerical methods are employed to examine the work, electric power input, and efficiency of electrokinetic pumps at a condition corresponding to maximum pump work. These analyses employ the full Poisson-Boltzmann equations and account for both convective and conductive electric currents, including surface conductance. We find that efficiencies at this condition of maximum work depend on three dimensionless parameters, the normalized zeta potential, normalized Debye layer thickness, and a fluid property termed the Levine number indicating the nominal ratio of convective to conductive electric currents. Efficiencies at maximum work exhibit a maximum for an optimum Debye layer thickness when the zeta potential and Levine number are fixed. This maximum efficiency increases with the square of the zeta potential when the zeta potential is small, but reaches a plateau as the zeta potential becomes large. The maximum efficiency in this latter regime is thus independent of the zeta potential and depends only on the Levine number. Simple analytical expressions describing this maximum efficiency in terms of the Levine number are provided. Geometries of a circular tube and planar channel are examined. C1 Sandia Natl Labs, Livermore, CA 94551 USA. RP Griffiths, SK (reprint author), Sandia Natl Labs, Livermore, CA 94551 USA. EM skgriff@sandia.gov NR 25 TC 28 Z9 29 U1 1 U2 5 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 0173-0835 J9 ELECTROPHORESIS JI Electrophoresis PD JAN PY 2005 VL 26 IS 2 BP 351 EP 361 DI 10.1002/elps.200406169 PG 11 WC Biochemical Research Methods; Chemistry, Analytical SC Biochemistry & Molecular Biology; Chemistry GA 894LX UT WOS:000226794400005 PM 15657883 ER PT J AU Zheng, L Zhou, M Chai, Q Parrish, J Xue, D Patrick, SM Turchi, JJ Yannone, SM Chen, D Shen, BH AF Zheng, L Zhou, M Chai, Q Parrish, J Xue, D Patrick, SM Turchi, JJ Yannone, SM Chen, D Shen, BH TI Novel function of the flap endonuclease 1 complex in processing stalled DNA replication forks SO EMBO REPORTS LA English DT Article DE DNA replication fork; flap endonuclease 1; Wemer syndrome protein ID DEPENDENT PROTEIN-KINASE; WERNER-SYNDROME PROTEIN; SACCHAROMYCES-CEREVISIAE; MISMATCH REPAIR; TOPOISOMERASE-I; RECOMBINATION; CLEAVAGE; ARREST; DAMAGE; PHOSPHORYLATION AB Restarting stalled replication forks partly depends on the break-induced recombination pathway, in which a DNA double-stranded break (DSB) is created on the stalled replication fork to initiate the downstream recombination cascades. Single-stranded DNA gaps accumulating on stalled replication forks are potential targets for endonucleases to generate DSBs. However, it is unclear how this process is executed and which nucleases are involved in eukaryotic cells. Here, we identify a novel gap endonuclease (GEN) activity of human flap endonuclease 1 (FEN-1), critical in resolving stalled replication fork. In response to replication arrest, FEN-1 interacts specifically with Werner syndrome protein for efficient fork cleavage. Replication protein A facilitates FEN-1 interaction with DNA bubble structures. Human FEN-1, but not the GEN-deficient mutant, E178A, was shown to rescue the defect in resistance to UV and camptothecin in a yeast FEN-1 null mutant. C1 City Hope Natl Med Ctr, Dept Radiat Biol, Duarte, CA 91010 USA. City Hope Natl Med Ctr, Beckman Res Inst, Duarte, CA 91010 USA. Univ Colorado, Dept Mol Cellular & Dev Biol, Boulder, CO 80309 USA. Wright State Univ, Sch Med, Dept Biochem & Mol Biol, Dayton, OH 45435 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA. RP Shen, BH (reprint author), City Hope Natl Med Ctr, Dept Radiat Biol, 1500 E Duarte Rd, Duarte, CA 91010 USA. EM bshen@coh.org RI Yannone, Steven/G-1927-2011; Turchi, John/B-5807-2015; OI Turchi, John/0000-0001-5375-2992; XUE, DING/0000-0002-8429-8136 FU NCI NIH HHS [R01CA073763, R01CA085344, R01 CA085344] NR 26 TC 85 Z9 87 U1 1 U2 5 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 1469-221X J9 EMBO REP JI EMBO Rep. PD JAN PY 2005 VL 6 IS 1 BP 83 EP 89 DI 10.1038/sj.embor.7400313 PG 7 WC Biochemistry & Molecular Biology; Cell Biology SC Biochemistry & Molecular Biology; Cell Biology GA 885UV UT WOS:000226183500017 PM 15592449 ER PT B AU Caldwell, M Martinez, LE AF Caldwell, M Martinez, LE GP IEEE TI The Sandia Lightnig Simulator - Recommissioning and upgrades SO EMC 2005: IEEE International Symposium on Electromagnetic Compatibility, Vols 1-3, Proceedings LA English DT Proceedings Paper CT IEEE International Symposium on Electromagnetic Compatibility CY AUG 08-12, 2005 CL Chicago, IL SP IEEE DE lightning; full-scale lightning testing AB The Sandia Lightning Simulator at Sandia National Laboratories can provide up to 200kA for a simulated single lightning stroke, 100 kA for a subsequent stroke, and hundreds of Amperes of continuing current. It has recently been recommissioned after a decade of inactivity and the single-stroke capability demonstrated. The simulator capabilities, basic design components, upgrades, and diagnostic capabilities are discussed in this paper. C1 Sandia Natl Labs, Appl Accelerator & Electromagnet Technol, Albuquerque, NM 87185 USA. RP Caldwell, M (reprint author), Sandia Natl Labs, Appl Accelerator & Electromagnet Technol, POB 5800, Albuquerque, NM 87185 USA. 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 0-7803-9380-5 PY 2005 BP 368 EP 371 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BDD82 UT WOS:000232979200071 ER PT S AU Naulleau, P Goldberg, KA Anderson, E Cain, JP Denham, P Hoef, B Jackson, K Morlens, AS Rekawa, S Dean, K AF Naulleau, P Goldberg, KA Anderson, E Cain, JP Denham, P Hoef, B Jackson, K Morlens, AS Rekawa, S Dean, K BE Mackay, RS TI EUV microexposures at the ALS using the 0.3-NA MET projection optics SO Emerging Lithographic Technologies IX, Pts 1 and 2 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Emerging Lithographic Technologies IX CY MAR 01-03, 2005 CL San Jose, CA SP SPIE DE extreme ultraviolet lithography; synchrotron; variable-sigma illuminator; coherence ID EXTREME-ULTRAVIOLET LITHOGRAPHY; ENGINEERING TEST STAND; PHOTORESIST; ALIGNMENT AB The recent development of high numerical aperture (NA) EUV optics such as the 0.3-NA Micro Exposure Tool (MET) optic has given rise to a new class of ultra-high resolution microexposure stations. Once such printing station has been developed and implemented at Lawrence Berkeley National Laboratory's Advanced Light Source. This flexible printing station utilizes a programmable coherence illuminator providing real-time pupil-fill control for advanced EUV resist and mask development. The Berkeley exposure system programmable illuminator enables several unique capabilities. Using dipole illumination out to sigma=1. the Berkeley tool supports equal-line-space printing down to 12 rim, well beyond the capabilities of similar tools. Using small-sigma illumination combined with the central obscuration of the MET optic enables the system to print feature sizes that are twice as small as those coded on the mask. In this configuration, the effective 10x-demacnification for equal lines and spaces reduces the mask fabrication burden for ultra-high-resolution printing. The illuminator facilitates coherence studies such as the impact of coherence on line-edge roughness (LER) and flare. Finally the illuminator enables novel print-based aberration monitoring techniques as described elsewhere in these proceedings. Here we describe the capabilities of the new MET printing station and present system characterization results. Moreover, we present the latest printing results obtained in experimental resists. Limited by the availability of high-resolution photoresists. equal line-space printing down to 25 nm has been demonstrated as well as isolated line printing down to 29 nm with an LER of approaching 3 rim. C1 Lawrence Berkeley Natl Lab, Ctr Xray Opt, Berkeley, CA 94720 USA. RP Naulleau, P (reprint author), Lawrence Berkeley Natl Lab, Ctr Xray Opt, Berkeley, CA 94720 USA. NR 17 TC 28 Z9 28 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 0-8194-5731-0 J9 P SOC PHOTO-OPT INS PY 2005 VL 5751 BP 56 EP 63 DI 10.1117/12.600388 PN 1-2 PG 8 WC Optics; Imaging Science & Photographic Technology SC Optics; Imaging Science & Photographic Technology GA BCI48 UT WOS:000229586500006 ER PT S AU Bajt, S Dai, ZR Nelson, EJ Wall, MA Alameda, J Nguyen, N Baker, S Robinson, JC Taylor, JS Clift, M Aquila, A Gullikson, EM Edwards, NVG AF Bajt, S Dai, ZR Nelson, EJ Wall, MA Alameda, J Nguyen, N Baker, S Robinson, JC Taylor, JS Clift, M Aquila, A Gullikson, EM Edwards, NVG BE Mackay, RS TI Oxidation resistance of Ru-capped EUV multilayers SO Emerging Lithographic Technologies IX, Pts 1 and 2 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Emerging Lithographic Technologies IX CY MAR 01-03, 2005 CL San Jose, CA SP SPIE DE EUVL; multilayer; capping layer; Mo/Si; Ru; microstructure; oxidation; thermal stability ID CONTAMINATION; LITHOGRAPHY; MITIGATION; OPTICS AB Differently prepared Ru-capping layers, deposited on Mo/Si EUV multilayers. have been characterized using a suite of metrologies to establish their baseline structural, optical, and surface properties in as-deposited state. The same capping layer structures were tested for their thermal stability and oxidation resistance. Post-mortem characterization identified changes due to accelerated tests. The best performing Ru-capping layer structure was studied in detail with transmission electron microscopy to identify the grain microstructure and texture. This information is essential for modeling and performance optimization of EUVL multilayers. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Bajt, S (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave, Livermore, CA 94550 USA. RI Dai, Zurong/E-6732-2010 NR 11 TC 20 Z9 20 U1 0 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 0-8194-5731-0 J9 P SOC PHOTO-OPT INS PY 2005 VL 5751 BP 118 EP 127 DI 10.1117/12.597443 PN 1-2 PG 10 WC Optics; Imaging Science & Photographic Technology SC Optics; Imaging Science & Photographic Technology GA BCI48 UT WOS:000229586500012 ER PT S AU Anderson, RJ Buchenauer, DA Williams, KA Clift, WM Klebanoff, LE Edwards, NV Wood, OR Wurm, S AF Anderson, RJ Buchenauer, DA Williams, KA Clift, WM Klebanoff, LE Edwards, NV Wood, OR Wurm, S BE Mackay, RS TI Investigation of plasma-induced erosion of multilayer condenser optics SO Emerging Lithographic Technologies IX, Pts 1 and 2 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Emerging Lithographic Technologies IX CY MAR 01-03, 2005 CL San Jose, CA SP SPIE DE extreme ultraviolet lithography; laser pulsed plasma source; erosion; sputtering; gold; molybdenum; silicon; carbon ID PROGRAM AB Experiments are presented that investigate the mechanistic cause of multilayer erosion observed from condenser optics exposed to EUV laser-produced plasma (LPP) sources. Using a Xe filament jet source excited with Nd-YAG laser radiation (300 mJ/pulse), measurements were made of material erosion from Au, Mo, Si and C using coated quartz microbalances located 127 mm from the plasma. The observed erosion rates were as follows: Au=99nm/10(6) Shots, Mo=26nm/10(6) shots, Si=19nm/10(6) shots, and C=6nm/10(6) shots. The relative ratio Au:Mo:Si:C of erosion rates observed experimentally, 16:4:3:1 compares favorably with that predicted from an atomic sputtering model assuming 20 kV Xe ions, 16:6:4:1. The relative agreement indicates that Xe-substrate sputtering is largely responsible for the erosion of Mo/Si multilayers on condenser optics that directly face the plasma. Time-of-flight Faraday cup measurements reveal the emission of high energy Xe ions from the Xe-filament jet plasma. The erosion rate does not depend on the repetition rate of the laser, suggesting a thermal mechanism is not operative. The Xe-filament jet erosion is similar to 20x that observed from a Xe spray jet. Since the long-lived (millisecond time scale) plasma emanating from these two sources are the same to within similar to 30%, sputtering from this long-lived plasma can be ruled out as an erosion agent. C1 Sandia Natl Labs, Livermore, CA 94551 USA. RP Anderson, RJ (reprint author), Sandia Natl Labs, POB 969, Livermore, CA 94551 USA. NR 3 TC 5 Z9 5 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 0-8194-5731-0 J9 P SOC PHOTO-OPT INS PY 2005 VL 5751 BP 128 EP 139 DI 10.1117/12.599859 PN 1-2 PG 12 WC Optics; Imaging Science & Photographic Technology SC Optics; Imaging Science & Photographic Technology GA BCI48 UT WOS:000229586500013 ER PT S AU Soufli, R Baker, SL Ratti, S Robinson, JC Bajt, SA Alameda, JB Spiller, E Taylor, JS Gullikson, EM Dollar, FJ Aquila, AL Bristol, RL AF Soufli, R Baker, SL Ratti, S Robinson, JC Bajt, SA Alameda, JB Spiller, E Taylor, JS Gullikson, EM Dollar, FJ Aquila, AL Bristol, RL BE Mackay, RS TI Substrate smoothing for high-temperature condenser operation in EUVL source environments SO Emerging Lithographic Technologies IX, Pts 1 and 2 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Emerging Lithographic Technologies IX CY MAR 01-03, 2005 CL San Jose, CA SP SPIE DE smoothing; condenser optics; multilayers; polyimide; extreme ultraviolet lithography AB We are developing polymer smoothing processes on diamond-turned (metal) and ground (metal or ceramic) substrates to reduce high and mid-spatial frequency roughness, for implementation as EUVL condenser optics. Diamond-turning or grinding can be used as relatively inexpensive processes to obtain the specified optic figure, however, the resulting surface has high-spatial roughness in the order of tens or hundreds of Angstroms, which would prohibit normal incidence operation at EUV wavelengths due to extremely low reflectance. Our polymer smoothing process reduces roughness to a few Angstroms, thus enabling normal-incidence operation. The substrate material and smoothing film have to combine a unique set of properties such as chemical compatibility, high thermal stability and low stress to be able to operate inside alternative-fuel EUVL source environments. Experimental results are presented on the development, testing and performance of these novel Substrates. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Soufli, R (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave, Livermore, CA 94550 USA. RI Dollar, Franklin/C-9214-2013 OI Dollar, Franklin/0000-0003-3346-5763 NR 3 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 0-8194-5731-0 J9 P SOC PHOTO-OPT INS PY 2005 VL 5751 BP 140 EP 145 DI 10.1117/12.606466 PN 1-2 PG 6 WC Optics; Imaging Science & Photographic Technology SC Optics; Imaging Science & Photographic Technology GA BCI48 UT WOS:000229586500014 ER PT S AU Chen, Y Ji, LL van den Akker, BP Ji, Q Leung, BNK Siekhaus, WJ AF Chen, Y Ji, LL van den Akker, BP Ji, Q Leung, BNK Siekhaus, WJ BE Mackay, RS TI Ion beam imprinting system SO Emerging Lithographic Technologies IX, Pts 1 and 2 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Emerging Lithographic Technologies IX CY MAR 01-03, 2005 CL San Jose, CA SP SPIE DE ion beam imprinting system; FIB; micromachining AB An ion beam imprinting system has been developed at Lawrence Berkeley National Laboratory recently. It is a useful tool to perform micromachining, surface modification, and ion doping etc. The principle of the imprinter is to directly transfer the pattern from the mask to the substrate. It is capable to produce multiple shaped ion beams simultaneously. Therefore it is much more efficient to do micromachining for large volume production than conversional focused ion beam system. Different shaped masks and diverse ion species have been tested both on conductors and insulators. Furthermore, the ion beam imprinter can transfer patterns not only onto a planar target but also onto non-planar surfaces, for example the outer and inner surfaces of cylinders. The imprinting technique can also be applied in three-dimensional micromachining, for example using cylindrical masks to fabricate the medical stents. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Chen, Y (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NR 9 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 0-8194-5731-0 J9 P SOC PHOTO-OPT INS PY 2005 VL 5751 BP 548 EP 555 DI 10.1117/12.598467 PN 1-2 PG 8 WC Optics; Imaging Science & Photographic Technology SC Optics; Imaging Science & Photographic Technology GA BCI48 UT WOS:000229586500056 ER PT S AU Barty, A Liu, YW Gullikson, E Taylor, JS Wood, O AF Barty, A Liu, YW Gullikson, E Taylor, JS Wood, O BE Mackay, RS TI Actinic inspection of multilayer defects on EUV masks SO Emerging Lithographic Technologies IX, Pts 1 and 2 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Emerging Lithographic Technologies IX CY MAR 01-03, 2005 CL San Jose, CA SP SPIE DE extreme ultraviolet lithography; mask; reticle; defect AB The production of defect-free mask blanks, and the development of techniques for inspecting and qualifying EUV mask blanks, remains a key challenge for EUV lithography. In order to ensure a reliable supply of defect-free mask blanks, it is necessary to develop techniques to reliably and accurately detect defects on un-pattemed mask blanks. These inspection tools must be able to accurately detect all critical defects whilst simultaneously having the minimum possible false-positive detection rate. There continues to be improvement in high-speed non-actinic mask blank inspection tools, and it is anticipated that these tools can and will be used by industry to qualify EUV mask blanks. However, the outstanding question remains one of validating that non-actinic inspection techniques are capable of detecting all printable EUV defects. To qualify the performance of non-actinic inspection tools, a unique dual-mode EUV mask inspection system has been installed at the Advanced Light Source (ALS) synchrotron at Lawrence Berkeley National Laboratory. In high-speed inspection mode, whole mask blanks are scanned for defects using 13.5-nin wavelength light to identify and map all locations on the mask that scatter a significant amount of EUV light. In imaging, or defect review mode, a zone plate is placed in the reflected beam path to image a region of interest onto a CCD detector with an effective resolution on the mask of 100-nm or better. Combining the capabilities of the two inspection tools into one system provides the unique capability to determine the coordinates of native defects that can be used to compare actinic defect inspection with visible light defect inspection tools under commercial development, and to provide data for comparing scattering models for EUV mask defects. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Liu, YW (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94550 USA. NR 4 TC 20 Z9 20 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 0-8194-5731-0 J9 P SOC PHOTO-OPT INS PY 2005 VL 5751 BP 651 EP 659 DI 10.1117/12.598488 PN 1-2 PG 9 WC Optics; Imaging Science & Photographic Technology SC Optics; Imaging Science & Photographic Technology GA BCI48 UT WOS:000229586500067 ER PT S AU Liu, YW Barty, A Gullikson, E Taylor, JS Liddle, JA Wood, O AF Liu, YW Barty, A Gullikson, E Taylor, JS Liddle, JA Wood, O BE Mackay, RS TI A dual-mode actinic EUV mask inspection tool SO Emerging Lithographic Technologies IX, Pts 1 and 2 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Emerging Lithographic Technologies IX CY MAR 01-03, 2005 CL San Jose, CA SP SPIE DE extreme ultraviolet lithography; mask; reticle; defect; inspection; microscopy AB To qualify the performance of non-actinic inspection tools, a novel EUV mask inspection system has been installed at the Advanced Light Source (ALS) synchrotron facility at Lawrence Berkeley National Laboratory. Similar to the older generation actinic mask inspection tool(1), the new system can operate in scanning mode, when mask blanks are scanned for defects using 13.5-nm in-band radiation to identify and map all locations on the mask that scatter a significant amount of EUV light. By modifying and optimizing beamline optics (11.3.2 at ALS) and replacing K-B focusing mirrors with a high quality Schwarzschild illuminator, the new system achieves an order of magnitude improvement on in-band EUV flux density at the mask, enabling faster scanning speed and higher sensitivity to smaller defects. Moreover, the system can also operate in imaging mode, when it becomes a zone-plate-based full-field EUV microscope with spatial resolution better than 100 nm. The microscope utilizes an off-axis setup, making it possible to obtain bright field images over a field-of-view of 5x5 mu m(2). C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Xray Opt, Berkeley, CA 94720 USA. RP Liu, YW (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Xray Opt, Berkeley, CA 94720 USA. RI Liddle, James/A-4867-2013 OI Liddle, James/0000-0002-2508-7910 NR 4 TC 23 Z9 23 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 0-8194-5731-0 J9 P SOC PHOTO-OPT INS PY 2005 VL 5751 BP 660 EP 669 DI 10.1117/122.598559 PN 1-2 PG 10 WC Optics; Imaging Science & Photographic Technology SC Optics; Imaging Science & Photographic Technology GA BCI48 UT WOS:000229586500068 ER PT S AU Allain, JP Hassanein, A Nieto, M Titov, V Plotkin, P Hinson, E Rice, BJ Bristol, R Rokusek, D Lytle, W Heuser, BJ Allain, MMC Ju, H Chrobak, C AF Allain, JP Hassanein, A Nieto, M Titov, V Plotkin, P Hinson, E Rice, BJ Bristol, R Rokusek, D Lytle, W Heuser, BJ Allain, MMC Ju, H Chrobak, C BE Mackay, RS TI Erosion and degradation of EUV lithography collector mirrors under particle bombardment SO Emerging Lithographic Technologies IX, Pts 1 and 2 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Emerging Lithographic Technologies IX CY MAR 01-03, 2005 CL San Jose, CA SP SPIE DE sputtering; EUV reflectivity; multilayer erosion; EUV collector optics; ion scattering spectroscopy ID SPUTTERING YIELDS AB In extreme ultraviolet lithography (EUVL) environments both laser produced plasma (LPP) and gas discharge produced plasma (GDPP) configurations face serious issues regarding components lifetime and performance under particle bombardment, in particular collector mirrors. For both configurations debris, fast ions, fast neutrals, and condensable EUV radiator fuels (Li, Sn) can affect collector mirrors. In addition, collector mirrors are exposed to impurities (H,C,O,N), off-band radiation (depositing heat) and highly-charged ions leading to their degradation and consequently limiting, 13.5 nm light reflection intensity. The IMPACT (Interaction of Materials with charged Particles and Components Testing) experiment at Argonne studies radiation-induced, thermodynamic and kinetic mechanisms that affect the performance of optical mirror surfaces. Results of optical component interaction with singly-charged inert gases (Xe) and alternate radiators (e.g. Sn) are presented for glancing incidence mirrors (i.e., Ru, Pd) at bombarding energies between 100-1000 eV at room temperature. Measurements conducted include: In-situ surface analysis: Auger electron spectroscopy, X-ray photoelectron spectroscopy, direct recoil spectroscopy and low-energy ion scattering spectroscopy; Ex-situ surface analysis: X-ray reflectivity, X-ray diffraction, atomic force microscopy and at-wavelength EUV reflectivity (NIST-SURF). C1 Argonne Natl Lab, Argonne, IL 60439 USA. RP Allain, JP (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. OI Nieto-Perez, Martin/0000-0001-6600-9786; Allain, Jean Paul/0000-0003-1348-262X NR 13 TC 12 Z9 12 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 0-8194-5731-0 J9 P SOC PHOTO-OPT INS PY 2005 VL 5751 BP 1110 EP 1117 DI 10.1117/12.598515 PN 1-2 PG 8 WC Optics; Imaging Science & Photographic Technology SC Optics; Imaging Science & Photographic Technology GA BCI48 UT WOS:000229586500118 ER PT S AU Gullikson, EM Tejnil, E Tsai, KY Stivers, AR Kusunose, H AF Gullikson, EM Tejnil, E Tsai, KY Stivers, AR Kusunose, H BE Mackay, RS TI Modeling the defect inspection sensitivity of a confocal microscope SO Emerging Lithographic Technologies IX, Pts 1 and 2 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Emerging Lithographic Technologies IX CY MAR 01-03, 2005 CL San Jose, CA SP SPIE DE EUVL; mask blank; defect; inspection; sensitivity; confocal microscope ID EXTREME-ULTRAVIOLET LITHOGRAPHY; MASK BLANKS; SCATTERING; SURFACE; SPHERE AB The ability of a confocal microscope to inspect for defects on EUVL mask blanks has been investigated both experimentally and theoretically. A model was developed to predict the image contrast of a confocal microscope. Measurements were made on PSL spheres and programmed multilayer defects using a Lasertec M1350 operating with 488 nm light. The images obtained of PSL spheres on both fused silica and multilayer-coated blanks are accurately predicted with the model using no adjustable parameters. Good agreement is also demonstrated for the modeling of multilayer defects. Predictions are made for the expected increase in contrast at the shorter wavelength of 266 nm. Substrate roughness contributes to the "noise" which limits the sensitivity to small defects. The contrast fluctuations due to roughness have been modeled using a simple single surface approximation. The model has been validated with measurements on substrates with varying degrees of roughness. The contribution of mask roughness to the sensitivity of a 266 nm tool is estimated. C1 Ctr Xray Opt, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Gullikson, EM (reprint author), Ctr Xray Opt, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. NR 13 TC 14 Z9 14 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 0-8194-5731-0 J9 P SOC PHOTO-OPT INS PY 2005 VL 5751 BP 1223 EP 1229 DI 10.1117/12.600209 PN 1-2 PG 7 WC Optics; Imaging Science & Photographic Technology SC Optics; Imaging Science & Photographic Technology GA BCI48 UT WOS:000229586500131 ER PT S AU Ahmad, S Greene, DL AF Ahmad, S Greene, DL GP TRB TI Effect of fuel economy on automobile safety - A reexamination SO ENERGY AND ENVIRONMENTAL CONCERNS 2005 SE TRANSPORTATION RESEARCH RECORD LA English DT Article; Proceedings Paper CT 84th Annual Meeting of the Transportation-Research-Board CY JAN 09-13, 2005 CL Washington, DC SP US Dept Transportat, US Fed Aviat Adm, US Fed Highway Adm, US Fed Motor Carrier Safety Adm, US Fed Railroad Adm, US Fed Transit Adm, US Natl Highway Traff Safety Adm, US Res & Innovat Technol Adm, NASA, USA Corps Engineers, US Coast Guard, US DOE, US EPA, Transportat Res Board, Transportat Dept 50 States, Puerto Rico & District Columbia ID FATALITIES; EFFICIENCY AB Since 1975, the fuel economy of passenger cars and light trucks has been regulated by the corporate average fuel economy (CAFE) standards, established during the energy crises of the 1970s. Calls to increase fuel economy are usually met by a fierce debate on the effectiveness of the CAFE standards and their impact on highway safety. A seminal study of the link between CAFE and traffic fatalities was published by R. W. Crandall and J. D. Graham in 1989. They linked higher fuel economy levels to decreases in vehicle weight and correlated the decline in new car weight with about a 20% increase in occupant fatalities. The time series available to them, 1947-1981, includes only the first 4 years of fuel economy regulation, but any statistical relationship estimated over such a short period is questionable. This paper reexamines the relationship between U.S. light-duty vehicle fuel economy and highway fatalities from 1966 to 2002. Cointegration analysis reveals that the stationary linear relationships between the average fuel economy of passenger cars and light trucks and highway fatalities are negative: higher miles per gallon is significantly correlated with fewer fatalities. Log-log models are not stable and tend to produce statistically insignificant (negative) relationships between fuel economy and traffic fatalities. These results do not definitively establish a negative relationship between light-duty vehicle fuel economy and highway fatalities; instead they demonstrate that national aggregate statistics cannot support the assertion that increased fuel economy has led to increased traffic fatalities. C1 Natl Transportat Res Ctr, Oak Ridge Natl Lab, Knoxville, TN 37932 USA. RP Ahmad, S (reprint author), Natl Transportat Res Ctr, Oak Ridge Natl Lab, 2360 Cherahala Blvd, Knoxville, TN 37932 USA. NR 26 TC 9 Z9 9 U1 0 U2 1 PU TRANSPORTATION RESEARCH BOARD NATL RESEARCH COUNCIL PI WASHINGTON PA 500 FIFTH ST, NW, WASHINGTON, DC 20001 USA SN 0361-1981 BN 0-309-09416-X J9 TRANSPORT RES REC PY 2005 IS 1941 BP 1 EP 7 PG 7 WC Engineering, Environmental; Engineering, Civil; Transportation Science & Technology SC Engineering; Transportation GA BEG19 UT WOS:000237195300001 ER PT S AU Santini, DJ Vyas, AD AF Santini, DJ Vyas, AD GP TRB TI Introduction of hybrid and diesel vehicles - Status within the life cycle of technology adoption SO ENERGY AND ENVIRONMENTAL CONCERNS 2005 SE TRANSPORTATION RESEARCH RECORD LA English DT Article; Proceedings Paper CT 84th Annual Meeting of the Transportation-Research-Board CY JAN 09-13, 2005 CL Washington, DC SP US Dept Transportat, US Fed Aviat Adm, US Fed Highway Adm, US Fed Motor Carrier Safety Adm, US Fed Railroad Adm, US Fed Transit Adm, US Natl Highway Traff Safety Adm, US Res & Innovat Technol Adm, NASA, USA Corps Engineers, US Coast Guard, US DOE, US EPA, Transportat Res Board, Transportat Dept 50 States, Puerto Rico & District Columbia AB The positions of the diesel and hybrid light-duty passenger vehicles in the technology adoption life cycle are examined with a mid-2004 stated preference study of 1,036 households. Implications of the technology life cycle for historical consumer preference estimates obtained for use in prior models of market share are briefly discussed. The hypothetical life-cycle segments addressed in this paper are early adopters, early buyers, and majority buyers. Survey respondents are segmented into subgroups, or markets, in light of hypothesized attributes of consumers within the product life cycle. Emphasis is placed on delineating the preferences of new instead of used vehicle buyer segments. These categories are compared with the five categories in the high-tech technology adoption life-cycle paradigm of G. Moore. One purpose of the analysis is to use the survey as a test of the reasonableness of the three categories used here. The implications of the survey for use of the rational buyer model of consumer trade-offs of incremental new vehicle capital cost (of a diesel or hybrid) against reduced fuel cost are addressed. Competition of desires for fuel efficiency, acceleration, and towing is also addressed, as are the effects of gender, income, education, and age. C1 Argonne Natl Lab, Ctr Transportat Res, Argonne, IL 60439 USA. RP Santini, DJ (reprint author), Argonne Natl Lab, Ctr Transportat Res, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 35 TC 1 Z9 1 U1 0 U2 0 PU TRANSPORTATION RESEARCH BOARD NATL RESEARCH COUNCIL PI WASHINGTON PA 500 FIFTH ST, NW, WASHINGTON, DC 20001 USA SN 0361-1981 BN 0-309-09416-X J9 TRANSPORT RES REC PY 2005 IS 1941 BP 18 EP 25 PG 8 WC Engineering, Environmental; Engineering, Civil; Transportation Science & Technology SC Engineering; Transportation GA BEG19 UT WOS:000237195300003 ER PT B AU Shadday, MA Heung, LK AF Shadday, Martin A., Jr. Heung, Leung Kit GP ASME TI A transient model of induced natural circulation thermal cycling for hydrogen isotope separation SO Energy Conversion and Resources - 2005 LA English DT Proceedings Paper CT ASME International Mechanical Engineering Congress and Exposition CY NOV 05-11, 2005 CL Orlando, FL SP ASME, Proc Ind Div, ASME, Rail Transportat Div, ASME, Noise Control & Acoust Div, ASME, Triol Div, ASME, Pressure Vessels & Piping Div, ASME, Bioengn Div, ASME, Mat Div, ASME, Appl Mech Div, ASME, Fluids Engn Div, ASME, Micro Elect Mech Syst Div, ASME, Heat Transfer Div, ASME, Nucl Engn Div, ASME, Power Div, ASME, Solar Energy Div, ASME, Safety Engn & Risk Anal Div, ASME, Technol & Soc Div, ASME, Adv Energy Syst Div, ASME, Aerosp Div, ASME, Comp & Informat Engn Div AB The property of selective temperature dependence of adsorption and desorption of hydrogen isotopes bN palladiuni is used for isotope separation. A proposal to use natural circulation of nitrogen to alternately heat and cool a packed bed of palladium coated beads is wider active investigation, and a device consisting of two interlocking natural convection loops is being designed. A transient numerical model of the device has been developed to aid the design process. It is a one-dimensional finite-difference model, using the Boussinesq approximation. The thermal inertia of the pipe walls and other heat structures as well as the heater control logic is included in the model. Two system configurations were modelled and results are compared. C1 Savannah River Natl Lab, Aiken, SC 29808 USA. RP Shadday, MA (reprint author), Savannah River Natl Lab, Aiken, SC 29808 USA. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 0-7918-4218-5 PY 2005 BP 113 EP 119 PG 7 WC Energy & Fuels SC Energy & Fuels GA BFM37 UT WOS:000243056000014 ER PT B AU Moore, L Post, H AF Moore, Larry Post, Hal GP ASME TI Photovoltaic power plant experience at Tucson Electric Power SO Energy Conversion and Resources - 2005 LA English DT Proceedings Paper CT ASME International Mechanical Engineering Congress and Exposition CY NOV 05-11, 2005 CL Orlando, FL SP ASME, Proc Ind Div, ASME, Rail Transportat Div, ASME, Noise Control & Acoust Div, ASME, Triol Div, ASME, Pressure Vessels & Piping Div, ASME, Bioengn Div, ASME, Mat Div, ASME, Appl Mech Div, ASME, Fluids Engn Div, ASME, Micro Elect Mech Syst Div, ASME, Heat Transfer Div, ASME, Nucl Engn Div, ASME, Power Div, ASME, Solar Energy Div, ASME, Safety Engn & Risk Anal Div, ASME, Technol & Soc Div, ASME, Adv Energy Syst Div, ASME, Aerosp Div, ASME, Comp & Informat Engn Div AB Tucson Electric Power Company (TEP) currently has nearly 5.0 MWdc of utility-scale grid-connected photovoltaic (PV) systems that have been installed in its service territory since 2000. Most of this installed PV capacity is in support of the Arizona Corporation Commission Environmental Portfolio Standard (EPS) goal that encourages TEP to generate 1.1% of its energy generation through renewable resources by 2007, with 60% of that amount from photovoltaics. The EPS program provides for multi-year, pay-as-you-go development of renewable energy, with kWhac energy production as a key program measurement. A total of 26 crystalline silicon collector systems, each rated at 135 kWdc, have been installed at the Springerville, AZ generating plant by TEP making this one of the largest PV plants in the world. These systems were installed in a standardized, cookie-cutter approach whereby each uses the same array field design, mounting hardware, electrical interconnection, and inverter unit. This approach has allowed TEP to achieve a total installed system cost of $5.40/Wdc and a TEP-calculated levelized energy cost of $0.10/kWhac for PV electrical generation. During this time, much has been learned regarding performance, cost, maintenance, installation and design. This paper presents an assessment of these topics and a perspective associated with this PV experience. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Moore, L (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 12 TC 2 Z9 2 U1 1 U2 2 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 0-7918-4218-5 PY 2005 BP 387 EP 394 PG 8 WC Energy & Fuels SC Energy & Fuels GA BFM37 UT WOS:000243056000048 ER PT S AU Manay, S Cremers, D Yezzi, A Soatto, S AF Manay, S Cremers, D Yezzi, A Soatto, S BE Rangarajan, A Vemuri, B Yuille, AL TI One-shot integral invariant shape priors for variational segmentation SO ENERGY MINIMIZATION METHODS IN COMPUTER VISION AND PATTERN RECOGNITION, PROCEEDINGS SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article; Proceedings Paper CT 5th International Workshop on Energy Minimization Methods in Computer Vision and Pattern Recognition CY NOV 09-11, 2005 CL St Augustine, FL SP Univ Florida, Int Assoc Pattern Recongnit ID IMAGE SEGMENTATION; ACTIVE CONTOURS; DISTANCES; MODELS; SNAKES AB We match shapes, even under severe deformations, via a smooth reparametrization of their integral invariant signatures. These robust signatures and correspondences are the foundation of a shape energy functional for variational image segmentation. Integral invariant shape templates do not require registration and allow for significant deformations of the contour, such as the articulation of the object's parts. This enables generalization to multiple instances of a shape from a single template, instead of requiring several templates for searching or training. This paper motivates and presents the energy functional, derives the gradient descent direction to optimize the functional, and demonstrates the method, coupled with a data term, on real image data where the object's parts are articulated. C1 Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA 94551 USA. Georgia Inst Technol, Atlanta, GA 30332 USA. Univ Calif Los Angeles, Los Angeles, CA 90024 USA. RP Manay, S (reprint author), Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, POB 808,L-551, Livermore, CA 94551 USA. EM smanay.ece98@gtlaumni.org; daniel.cremers@siemens.com; anthony.yezzi@gatech.edu; soatto@cs.ucla.edu NR 33 TC 2 Z9 2 U1 1 U2 1 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 3-540-30287-5 J9 LECT NOTES COMPUT SC PY 2005 VL 3757 BP 414 EP 426 PG 13 WC Computer Science, Artificial Intelligence; Computer Science, Theory & Methods SC Computer Science GA BDL83 UT WOS:000234193000027 ER PT J AU Levinson, R Akbari, H Konopacki, S Bretz, S AF Levinson, R Akbari, H Konopacki, S Bretz, S TI Inclusion of cool roofs in nonresidential Title 24 prescriptive requirements SO ENERGY POLICY LA English DT Article ID ENERGY USE AB Roofs that have high solar reflectance (high ability to reflect sunlight) and high thermal emittance (high ability to radiate heat) tend to stay cool in the sun. The same is true of low-emittance roofs with exceptionally high solar reflectance. Substituting a cool roof for a non-cool roof tends to decrease cooling electricity use, cooling power demand, and cooling-equipment capacity requirements. while slightly increasing heating energy consumption. Cool roofs can also lower citywide ambient air temperature in summer. slowing ozone formation and increasing human comfort. DOE-2.1E building energy simulations indicate that use of a cool roofing material on a prototypical California nonresidential (NR) building with a low-sloped roof yields average annual cooling energy savings of approximately 3.2kWh/m(2) (300 kWh/ 1000 ft(2)), average annual natural gas deficits of 5.6 MJ/m(2) (4.9 therm/1000 ft(2)), average annual source energy savings of 30 MJ/m(2) (2.6 MBTU/1000 ft(2)), and average peak power demand savings of 2.1W/m(2) (0.19 kW/1000 ft(2)). The 15-year net present value (NPV) of energy savings averages S4.90/m(2) ($450/1000 ft(2)) With time-dependent valuation (TDV), and $4.00/m(2) ($370/1000 ft(2)) without TDV. When cost savings from downsizing cooling equipment are included, the average total savings (15-year NPV + equipment savings) rises to $5.90/m(2) ($550/1000 ft(2)) with TDV, and to $5.00/m(2) ($470/1000 ft(2)) without TDV. Total savings ranee from 1.90 to 8.30 $/m(2) (0.18-0.77 $/ft(2)) with TDV, and from 1.70 to 7.10 $/m(2) (0.16-0.66 $/ft(2)) without TDV, across California's 16 climate zones. The typical cost premium for a cool roof is 0.00-2.20 $/m(2) (0.00-0.20 $/ft(2)). Cool roofs With premiums up to $2.20/m(2) ($0.20/ft(2)) are expected to be cost effective in climate zones 2-16; those with premiums not exceeding $1.90/m(2) ($0.18/ft(2)) are expected to be also cost effective in climate zone 1. Hence, this study recommends that the year-2005 California building energy efficiency code (Title 24, Part 6 of the California Code of Regulations) for NR buildings with low-sloped roofs include a cool-roof prescriptive requirement in all California climate zones. Buildings with roofs that do not meet prescriptive requirements may comply with the code via an "overall-envelope" approach (non-metal roofs only), or via a performance approach (all roof types). Published by Elsevier Ltd. C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Heat Isl Grp, Berkeley, CA 94720 USA. RP Levinson, R (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Heat Isl Grp, Berkeley, CA 94720 USA. EM rmlevinson@LBL.gov NR 40 TC 42 Z9 42 U1 0 U2 7 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0301-4215 J9 ENERG POLICY JI Energy Policy PD JAN PY 2005 VL 33 IS 2 BP 151 EP 170 DI 10.1016/S0301-4215(03)00206-4 PG 20 WC Energy & Fuels; Environmental Sciences; Environmental Studies SC Energy & Fuels; Environmental Sciences & Ecology GA 860DE UT WOS:000224318500002 ER PT J AU Nakata, T Kubo, K Lamont, A AF Nakata, T Kubo, K Lamont, A TI Design for renewable energy systems with application to rural areas in Japan SO ENERGY POLICY LA English DT Article DE energy system; energy-economic models; renewable energy ID ELECTRICITY-GENERATION; GEOTHERMAL-ENERGY; POWER-SYSTEMS; PERFORMANCE; IMPACTS AB This study uses optimization modeling to study efficient ways to integrate renewable energy systems to provide electricity and heat in rural Japan. The model provides minimum cost system configuration and operation taking into account hour-by-hour energy availability and demand. Grid electricity is available to rural areas of Japan, but it is relatively expensive. Local renewable energy generation can be economic while using grid electricity to compensate for the intermittency of the renewable generation. In the model, renewable electricity can be provided by a combination of wind, photovoltaic, and biomass. Heat can be provided by petroleum, LPG, and geothermal heat pumps (GHPs). We find that due to the relatively high cost of grid electricity, there is significant penetration of wind generation. In turn, the penetration of wind creates economic conditions that encourage GHP penetration. The integrated renewable system reduces the annual cost of the entire system by 31% and reduces the carbon emissions by 50%. (C) 2003 Elsevier Ltd. All rights reserved. C1 Tohoku Univ, MOST, Grad Sch Engn, Sendai, Miyagi 9808579, Japan. Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Nakata, T (reprint author), Tohoku Univ, MOST, Grad Sch Engn, Aoba Yama 01, Sendai, Miyagi 9808579, Japan. EM nakata@cc.mech.tohoku.ac.jp RI Nakata, Toshihiko/E-3161-2010 OI Nakata, Toshihiko/0000-0003-0088-9498 NR 35 TC 36 Z9 37 U1 0 U2 12 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0301-4215 J9 ENERG POLICY JI Energy Policy PD JAN PY 2005 VL 33 IS 2 BP 209 EP 219 DI 10.1016/S0301-4215(03)00218-0 PG 11 WC Energy & Fuels; Environmental Sciences; Environmental Studies SC Energy & Fuels; Environmental Sciences & Ecology GA 860DE UT WOS:000224318500006 ER PT S AU Tatara, E North, M Hood, C Teymour, F Cinar, A AF Tatara, Eric North, Michael Hood, Cindy Teymour, Fouad Cinar, Ali BE Brueckner, SA Serugendo, GDM Hales, D Zambonelli, F TI Agent-based control of spatially distributed chemical reactor networks SO ENGINEERING SELF-ORGANISING SYSTEMS SE LECTURE NOTES IN ARTIFICIAL INTELLIGENCE LA English DT Article; Proceedings Paper CT 3rd International Workshop on Engineering Self-Organising Systems CY JUL 25, 2005 CL Utrecht, NETHERLANDS ID SYSTEMS; FEEDBACK AB Large-scale spatially distributed systems provide a unique and difficult control challenge because of their nonlinearity, spatialdistribution and generally high order. The control structure for these systems tend to be both discrete and distributed as well and contain discrete and continuous elements. A layered control structure interfaced with complex arrays of sensors and actuators provides a flexible supervision and control system that can deal with local and global challenges. An adaptive agent-based control structure is presented whereby local control objectives may be changed in order to achieve the global control objective. Information is shared through a global knowledge environment that promotes the distribution of ideas through reinforcement. The performance of the agent-based control approach is illustrated in a case study where the interaction front between two competing autocatalytic species is moved from one spatial configuration to another. The multi-agent control system is able to effectively explore the parameter space of the network and intelligently manipulate the network flow rates such that the desired spatial distribution of species is achieved. C1 IIT, Chicago, IL 60616 USA. Argonne Natl Lab, Argonne, IL 60439 USA. RP Tatara, E (reprint author), IIT, Chicago, IL 60616 USA. EM tataeri@iit.edu; north@anl.gov; hood@iit.edu; teymour@iit.edu; cinar@iit.edu NR 15 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 3-540-33342-8 J9 LECT NOTES ARTIF INT PY 2005 VL 3910 BP 222 EP 231 PG 10 WC Computer Science, Artificial Intelligence SC Computer Science GA BEM19 UT WOS:000238109300017 ER PT J AU Chew, P Shepherd, J Steinbrenner, J Ungor, A AF Chew, P Shepherd, J Steinbrenner, J Ungor, A TI Twelfth International Meshing Roundtable special issue SO ENGINEERING WITH COMPUTERS LA English DT Editorial Material C1 Univ Florida, Dept Comp Sci & Informat Engn, Gainesville, FL 32605 USA. Cornell Univ, Dept Comp Sci, Ithaca, NY 14853 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. Pointwise Inc, Ft Worth, TX 76104 USA. RP Ungor, A (reprint author), Univ Florida, Dept Comp Sci & Informat Engn, Gainesville, FL 32605 USA. EM ungor@cise.ufl.edu NR 0 TC 0 Z9 0 U1 1 U2 2 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 0177-0667 J9 ENG COMPUT-GERMANY JI Eng. Comput. PY 2005 VL 21 IS 1 BP 1 EP 1 DI 10.1007/s00366-005-0307-9 PG 1 WC Computer Science, Interdisciplinary Applications; Engineering, Mechanical SC Computer Science; Engineering GA 994SP UT WOS:000234051800001 ER PT J AU White, DR Saigal, S Owen, SJ AF White, DR Saigal, S Owen, SJ TI Meshing complexity: predicting meshing difficulty for single part CAD models SO ENGINEERING WITH COMPUTERS LA English DT Article; Proceedings Paper CT 12th International Meshing Roundtable Meeting CY SEP 14-17, 2003 CL Santa Fe, NM DE time to mesh mesh; complexity; blend detection; geometry clean-up ID GENERATION; ALGORITHM AB This paper proposes a method for predicting the complexity of meshing computer aided design (CAD) geometries with unstructured, hexahedral, finite elements. Meshing complexity refers to the relative level of effort required to generate a valid finite element mesh on a given CAD geometry. A function is proposed to approximate the meshing complexity for single part CAD models. The function is dependent on a user defined element size as well as on data extracted from the geometry and topology of the CAD part. Several geometry and topology measures are proposed, which both characterize the shape of the CAD part and detect configurations that complicate mesh generation. Based on a test suite of CAD models, the function is demonstrated to be accurate within a certain range of error. The solution proposed here is intended to provide managers and users of meshing software a method of predicting the difficulty in meshing a CAD model. This will enable them to make decisions about model simplification and analysis approaches prior to mesh generation. C1 Carnegie Mellon Univ, Dept Civil & Environm Engn, Pittsburgh, PA 15213 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. Univ S Florida, Dept Civil & Environm Engn, Tampa, FL 33620 USA. RP White, DR (reprint author), Carnegie Mellon Univ, Dept Civil & Environm Engn, Pittsburgh, PA 15213 USA. EM drwhite@sandia.gov NR 32 TC 6 Z9 8 U1 0 U2 3 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 0177-0667 J9 ENG COMPUT-GERMANY JI Eng. Comput. PY 2005 VL 21 IS 1 BP 76 EP 90 DI 10.1007/s00366-005-0002-x PG 15 WC Computer Science, Interdisciplinary Applications; Engineering, Mechanical SC Computer Science; Engineering GA 994SP UT WOS:000234051800007 ER PT J AU Jacobson, JO Hengartner, NW Louis, TA AF Jacobson, JO Hengartner, NW Louis, TA TI Inequity measures for evaluations of environmental justice: a case study of close proximity to highways in New York City SO ENVIRONMENT AND PLANNING A LA English DT Article ID URBAN PUBLIC-SERVICE; LONGITUDINAL ANALYSIS; SPATIAL ASSOCIATION; LAND USES; EQUITY; ACCESSIBILITY; REGRESSION; EXPOSURE; NEIGHBORHOODS; INDICATORS AB Assessments of environmental and territorial justice are similar in that both assess whether empirical relations between the spatial arrangement of undesirable hazards (or desirable public goods and services) and sociodemographic groups are consistent with notions of social justice, evaluating the spatial distribution of benefits and burdens (outcome equity) and the process that produces observed differences (process equity). Using proximity to major highways in New York City as a case study, we review methodological issues pertinent to both fields and discuss choice and computation of exposure measures, but focus primarily on measures of inequity. We present inequity measures computed from the empirically estimated joint distribution of exposure and demographics and compare them with traditional measures such as linear regression, logistic regression, and Theil's entropy index. We find that measures computed from the full joint distribution provide more unified, transparent, and intuitive operational definitions of inequity and show how the approach can be used to structure siting and decommissioning decisions. C1 Pardee RAND Grad Sch, Santa Monica, CA 90407 USA. Los Alamos Natl Lab, Los Alamos, NM 87544 USA. Johns Hopkins Univ, Bloomberg Sch Publ Hlth, Dept Biostat, Baltimore, MD 21205 USA. RP Jacobson, JO (reprint author), Pardee RAND Grad Sch, 1700 Main St, Santa Monica, CA 90407 USA. EM jerryojacobson@runbox.com; nickh@lanl.gov; tlouis@jhsph.edu NR 47 TC 17 Z9 17 U1 2 U2 9 PU PION LTD PI LONDON PA 207 BRONDESBURY PARK, LONDON NW2 5JN, ENGLAND SN 0308-518X J9 ENVIRON PLANN A JI Environ. Plan. A PD JAN PY 2005 VL 37 IS 1 BP 21 EP 43 DI 10.1068/a36225 PG 23 WC Environmental Studies; Geography SC Environmental Sciences & Ecology; Geography GA 897AM UT WOS:000226976400003 ER PT S AU Stenner, RD Hadley, DL Fenton, GA AF Stenner, RD Hadley, DL Fenton, GA BE Aral, MM Brebbia, CA Maslia, ML Sinks, T TI Standard guide for building indoor dispersion analysis, modeling and health effect assessment SO Environmental Exposure and Health SE WIT TRANSACTIONS ON ECOLOGY AND THE ENVIRONMENT LA English DT Proceedings Paper CT 1st International Conference on Environmental Exposure and Health CY OCT 05-07, 2005 CL Atlanta, GA SP Wessex Inst Technol, Georgia Tech, WIT Transact Ecol Environm DE building dispersion; health impacts; indoor air contamination; building terrorist event AB We are developing a standard guide that delineates a general approach for determining the health effects of the occupants of mechanically ventilated structures exposed to an intentional release of airborne chemical or biological agents, radiological materials, or an accidental release of toxic industrial chemicals or materials in or near a building. This Practice/Guide is under the jurisdiction of ASTM Committee E54 and is the direct responsibility of the E54.02 Subcommittee. This requires an understanding of building air flow characteristics and processes to calculate the agent concentration profiles throughout a structure based on agent fate and transport. Such analysis may take the form of equations, algorithms, combinations of equations/algorithms, or a fully developed building model to calculate inter-zonal airflow, contaminant concentration, and exposure. The standard guide is intended to provide the user with guiding principles to prepare for, respond to, and/or recover from an incident involving the overt or covert release of chemical agents, biological agents, or radioactive materials in or near a building with subsequent dispersion of that agent throughout the building. Preparation may include threat vulnerability, protection assessments, and emergency response planning and training. Response can include decision aides to help first responders. Recovery would include occupant treatment, forensics, detailed characterization, and remediation. The guidance will present assessment, analysis, and modeling options that provide assessments ranging from fast, coarse, and qualitative to slower, refined, and quantitative. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. RP Stenner, RD (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. NR 13 TC 0 Z9 0 U1 0 U2 0 PU COMPUTATIONAL MECHANICS PUBLICATIONS LTD PI SOUTHAMPTON PA ASHURST LODGE, SOUTHAMPTON S04 2AA, HANTS, ENGLAND SN 1746-448X BN 1-84564-029-2 J9 WIT TRANS ECOL ENVIR PY 2005 VL 85 BP 55 EP 63 PG 9 WC Environmental Sciences; Public, Environmental & Occupational Health; Toxicology SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health; Toxicology GA BEE01 UT WOS:000236906600006 ER PT S AU Jantzen, CM Cozzi, AD Bibler, NE AF Jantzen, CM Cozzi, AD Bibler, NE BE Vienna, J Herman, CC Marra, S TI High level waste processing experience with increased waste loadings SO ENVIRONMENTAL ISSUES AND WASTE MANAGEMENT TECHNOLOGIES IN THE CERAMIC AND NUCLEAR INDUSTRIES X SE CERAMIC TRANSACTIONS LA English DT Proceedings Paper CT 106th Annual Meeting of the American-Ceramic-Society CY APR 18-21, 2004 CL Indianapolis, IN SP Amer Ceram Soc ID SYSTEM AB The Defense Waste Processing Facility (DWPF) Engineering requested characterization of glass samples that were taken after the second melter (Melter #2) had been operational for similar to5 months. After the new melter had been installed, the waste loading had been increased to similar to38 wt% after a new quasicrystalline liquidus model had been implemented. The DWPF had also switched from processing with refractory Frit 200 to a more fluid Frit 320. The samples were taken after DWPF observed very rapid buildup of deposits in the upper pour spout bore and on the pour spout insert while processing the high waste loading feedstock. These samples were evaluated using various analytical techniques to determine the cause of the crystallization. The pour stream sample was homogenous, amorphous, and representative of the feed batch from which it was derived. Chemical analysis of the pour stream sample indicated that a waste loading of 38.5 wt% had been achieved. The data analysis indicated that surface crystallization, induced by temperature and oxygen fugacity gradients in the pour spout, caused surface crystallization to occur in the spout and on the insert at the higher waste loadings even though there was no crystallization in the pour stream. C1 Savannah River Natl Lab, Aiken, SC 29808 USA. RP Jantzen, CM (reprint author), Savannah River Natl Lab, Aiken, SC 29808 USA. NR 34 TC 2 Z9 2 U1 0 U2 0 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, WESTERVILLE, OH 43081-8720 USA SN 1042-1122 BN 1-57498-189-7 J9 CERAM TRANS PY 2005 VL 168 BP 31 EP 49 PG 19 WC Engineering, Environmental; Materials Science, Ceramics; Nuclear Science & Technology SC Engineering; Materials Science; Nuclear Science & Technology GA BBP76 UT WOS:000226957900003 ER PT S AU Smith, ME Barnes, AB Bickford, DF Imrich, KJ Iverson, DC Guerrero, HN AF Smith, ME Barnes, AB Bickford, DF Imrich, KJ Iverson, DC Guerrero, HN BE Vienna, J Herman, CC Marra, S TI DWPF glass air-lift pump life cycle testing and plant implementation SO ENVIRONMENTAL ISSUES AND WASTE MANAGEMENT TECHNOLOGIES IN THE CERAMIC AND NUCLEAR INDUSTRIES X SE CERAMIC TRANSACTIONS LA English DT Proceedings Paper CT 106th Annual Meeting of the American-Ceramic-Society CY APR 18-21, 2004 CL Indianapolis, IN SP Amer Ceram Soc AB Due to the accelerated cleanup at the Savannah River Site (SRS), efforts are underway to increase the glass melt rate and hence the high level waste processing throughput at the SRS Defense Waste Processing Plant Facility (DWPF). One of the proposed process/equipment improvements is a glass air-lift pump. The use of a glass air-lift pump to increase melt rate in the DWPF Melter has been investigated via several techniques including lab scale testing on various melters. The final test before implementation in DWPF was a long-term life cycle test (several months in duration) on a full size pump. The air-lift pump was successfully tested and no major problems were found. Based on this test a unit was designed and fabricated for DWPF and was installed in the DWPF Melter in February 2004. C1 Westinghouse Savannah River Co, Savannah River Technol Ctr, Aiken, SC 29808 USA. RP Smith, ME (reprint author), Westinghouse Savannah River Co, Savannah River Technol Ctr, Bldg 773-42A, Aiken, SC 29808 USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, WESTERVILLE, OH 43081-8720 USA SN 1042-1122 BN 1-57498-189-7 J9 CERAM TRANS PY 2005 VL 168 BP 51 EP 57 PG 7 WC Engineering, Environmental; Materials Science, Ceramics; Nuclear Science & Technology SC Engineering; Materials Science; Nuclear Science & Technology GA BBP76 UT WOS:000226957900004 ER PT S AU Jantzen, CM AF Jantzen, CM BE Vienna, J Herman, CC Marra, S TI Fluidized bed steam reforming (FBSR) of organic and nitrate containing salt supernate SO ENVIRONMENTAL ISSUES AND WASTE MANAGEMENT TECHNOLOGIES IN THE CERAMIC AND NUCLEAR INDUSTRIES X SE CERAMIC TRANSACTIONS LA English DT Proceedings Paper CT 106th Annual Meeting of the American-Ceramic-Society CY APR 18-21, 2004 CL Indianapolis, IN SP Amer Ceram Soc AB A salt supernate waste (Tank 48H) generated at the Savannah River Site (SRS) during demonstration of In Tank Precipitation (ITP) process for Cs removal contains nitrates, nitrites, and sodium tetraphenyl borate (NaTPB). This slurry must be pre-processed in order to reduce the impacts of the nitrate and organic species on subsequent vitrification in the Defense Waste Processing Facility (DWPF). Fluidized Bed Steam Reforming (FBSR) is a candidate technology for destroying the nitrates, nitrites, and organics (NaTPB) prior to melting. Bench scale tests were designed and conducted at the Savannah River National Laboratory (SRNL) to demonstrate that bench scale testing can adequately reproduce the CO/CO2 and H-2/H2O fugacities representative of the FBSR process and form the appropriate product phases. Carbonate and silicate product phases that were compatible with DWPF vitrification were achieved in the bench scale testing and test parameters were optimized for a pilot scale FBSR demonstration. C1 Savannah River Natl Lab, Aiken, SC 29808 USA. RP Jantzen, CM (reprint author), Savannah River Natl Lab, Aiken, SC 29808 USA. NR 14 TC 0 Z9 0 U1 0 U2 0 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, WESTERVILLE, OH 43081-8720 USA SN 1042-1122 BN 1-57498-189-7 J9 CERAM TRANS PY 2005 VL 168 BP 69 EP 79 PG 11 WC Engineering, Environmental; Materials Science, Ceramics; Nuclear Science & Technology SC Engineering; Materials Science; Nuclear Science & Technology GA BBP76 UT WOS:000226957900006 ER PT S AU Siemer, DD AF Siemer, DD BE Vienna, J Herman, CC Marra, S TI Steam reformation of sodium bearing waste: Pros & cons SO ENVIRONMENTAL ISSUES AND WASTE MANAGEMENT TECHNOLOGIES IN THE CERAMIC AND NUCLEAR INDUSTRIES X SE CERAMIC TRANSACTIONS LA English DT Proceedings Paper CT 106th Annual Meeting of the American-Ceramic-Society CY APR 18-21, 2004 CL Indianapolis, IN SP Amer Ceram Soc AB Liquid reprocessing waste which contains a good deal of sodium nitrate cannot be efficiently calcined in a fluidized bed reactor unless a chemical reducing agent such as sugar is added. If the goal is to produce calcine capable of passing radwaste leach tests (a finished waste form), it is necessary to also add a mineralizing agent (clay) and run the reactor at a considerably higher temperature than is typical of radwaste calciners (e.g., 725degreesC instead of 500degreesC) This paper describes the outcome of a 5-day attempt to make such a "direct disposal" calcine via "steam reforming" and presents the author's opinions about that scenario. C1 Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA. RP Siemer, DD (reprint author), Idaho Natl Engn & Environm Lab, PO 1625, Idaho Falls, ID 83415 USA. NR 19 TC 1 Z9 1 U1 1 U2 1 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, WESTERVILLE, OH 43081-8720 USA SN 1042-1122 BN 1-57498-189-7 J9 CERAM TRANS PY 2005 VL 168 BP 81 EP 90 PG 10 WC Engineering, Environmental; Materials Science, Ceramics; Nuclear Science & Technology SC Engineering; Materials Science; Nuclear Science & Technology GA BBP76 UT WOS:000226957900007 ER PT S AU Besmann, TM Kulkarni, NS Spear, KE Vienna, JD AF Besmann, TM Kulkarni, NS Spear, KE Vienna, JD BE Vienna, J Herman, CC Marra, S TI Predicting phase equilibria of spinel-forming constituents in waste glass systems SO ENVIRONMENTAL ISSUES AND WASTE MANAGEMENT TECHNOLOGIES IN THE CERAMIC AND NUCLEAR INDUSTRIES X SE CERAMIC TRANSACTIONS LA English DT Proceedings Paper CT 106th Annual Meeting of the American-Ceramic-Society CY APR 18-21, 2004 CL Indianapolis, IN SP Amer Ceram Soc ID OXIDE; AIR AB A modified associate species thermochemical model has been developed for the liquid/glass in nuclear waste glass systems, and provides a simple means for relatively accurately representing the thermochemistry of the liquid/glass phase. A modification of the methodology is required when two immiscible liquids are present, such that a positive interaction energy is included in the representation. The approach has been extended to include spinel-forming constituents together with the base glass system as well as development of a models for spinel phases. C1 Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. RP Besmann, TM (reprint author), Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA. NR 20 TC 1 Z9 1 U1 2 U2 2 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, WESTERVILLE, OH 43081-8720 USA SN 1042-1122 BN 1-57498-189-7 J9 CERAM TRANS PY 2005 VL 168 BP 121 EP 131 PG 11 WC Engineering, Environmental; Materials Science, Ceramics; Nuclear Science & Technology SC Engineering; Materials Science; Nuclear Science & Technology GA BBP76 UT WOS:000226957900011 ER PT S AU Vienna, JD Edwards, TB Crum, JV Kim, DS Peeler, DK AF Vienna, JD Edwards, TB Crum, JV Kim, DS Peeler, DK BE Vienna, J Herman, CC Marra, S TI Liquidus temperature and one percent crystal content models for initial hanford HLW glasses SO ENVIRONMENTAL ISSUES AND WASTE MANAGEMENT TECHNOLOGIES IN THE CERAMIC AND NUCLEAR INDUSTRIES X SE CERAMIC TRANSACTIONS LA English DT Proceedings Paper CT 106th Annual Meeting of the American-Ceramic-Society CY APR 18-21, 2004 CL Indianapolis, IN SP Amer Ceram Soc AB Preliminary models for liquidus temperature (T-L) and temperature at 1 vol% crystal (T-01) applicable to WTP HLW glasses in the spinel primary phase field were developed. A series of literature model forms were evaluated using consistent sets of data for model fitting and validation. For T-L, the ion potential and linear mixture models performed best, while for To, the linear mixture model out performed all other model forms. T-L models were able to predict with smaller uncertainty. However, the lower To, values (even with higher prediction uncertainties) were found to allow for a much broader processing envelope for WTP HLW glasses. C1 Pacific NW Natl Lab, Richland, WA USA. RP Vienna, JD (reprint author), Pacific NW Natl Lab, Richland, WA USA. NR 16 TC 3 Z9 3 U1 0 U2 1 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, WESTERVILLE, OH 43081-8720 USA SN 1042-1122 BN 1-57498-189-7 J9 CERAM TRANS PY 2005 VL 168 BP 133 EP 140 PG 8 WC Engineering, Environmental; Materials Science, Ceramics; Nuclear Science & Technology SC Engineering; Materials Science; Nuclear Science & Technology GA BBP76 UT WOS:000226957900012 ER PT S AU Jantzen, CM Smith, ME Peeler, DK AF Jantzen, CM Smith, ME Peeler, DK BE Vienna, J Herman, CC Marra, S TI Dependency of sulfate solubility on melt composition and melt polymerization SO ENVIRONMENTAL ISSUES AND WASTE MANAGEMENT TECHNOLOGIES IN THE CERAMIC AND NUCLEAR INDUSTRIES X SE Ceramic Transactions LA English DT Proceedings Paper CT 106th Annual Meeting of the American-Ceramic-Society CY APR 18-21, 2004 CL Indianapolis, IN SP Amer Ceram Soc ID WASTE GLASS MELTERS AB Sulfate and sulfate salts are not very soluble in borosilicate waste glass. When sulfate is present in excess it can form water soluble secondary phases and/or a molten salt layer (gall) on the melt pool surface which is purported to cause steam explosions in slurry fed rnelters. Therefore, sulfate can impact glass durability while formation of a molten salt layer on the melt pool can impact processing. Sulfate solubility has been shown to be compositionally dependent in various studies, e.g. B(2)O(3), Li(2)O, CaO, MgO, Na(2)O, and Fe(2)O(3) were shown to increase sulfate solubility while Al(2)O(3) and SiO(2) decreased sulfate solubility. This compositional dependency is shown to be related to the calculated melt viscosity at various temperatures and hence the melt polymerization. C1 Savannah River Natl Lab, Aiken, SC 29808 USA. RP Jantzen, CM (reprint author), Savannah River Natl Lab, Aiken, SC 29808 USA. NR 34 TC 11 Z9 11 U1 1 U2 5 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, WESTERVILLE, OH 43081-8720 USA SN 1042-1122 BN 1-57498-189-7 J9 CERAM TRANS PY 2005 VL 168 BP 141 EP 152 PG 12 WC Engineering, Environmental; Materials Science, Ceramics; Nuclear Science & Technology SC Engineering; Materials Science; Nuclear Science & Technology GA BBP76 UT WOS:000226957900013 ER PT S AU Lorier, TH Miller, DH Harbour, JR Langton, CA Mhyre, WL AF Lorier, TH Miller, DH Harbour, JR Langton, CA Mhyre, WL BE Vienna, J Herman, CC Marra, S TI Grout formulations for closing Hanford high-level waste tanks bench-scale study SO ENVIRONMENTAL ISSUES AND WASTE MANAGEMENT TECHNOLOGIES IN THE CERAMIC AND NUCLEAR INDUSTRIES X SE CERAMIC TRANSACTIONS LA English DT Proceedings Paper CT 106th Annual Meeting of the American-Ceramic-Society CY APR 18-21, 2004 CL Indianapolis, IN SP Amer Ceram Soc AB Hanford has 149 single-shell HLW tanks that were constructed during the period from 1943 to 1964. Many of these tanks have leaked and so a major effort is proceeding to transfer the liquid portion of the waste to 28 newer, double-shell tanks and "close" the single-shell tanks. To initiate and accelerate this closure process, the Accelerated Tank Closure Demonstration (ATCD) Project was implemented. This Project focuses only on the retrieval and subsequent filling with grout of HLW Tank 241-C-106 in the 200 East Area of the Hanford Site. The Savannah River National Laboratory (SRNL) was tasked with developing the grout formulations for the three layers that will be placed in the tanks. In addition to designing fill materials for Tank C-106, the task included identifying grouts for the next six tanks scheduled to be closed: C-20 1, C-202, C-203, C-204, S-102, and S-112. Phase I fill is a high-strength grout that will stabilize the residual waste in the tanks. Mix HRG4 was selected for this layer, referred to as the "stabilization layer," based on its 28-day compressive strength of similar to2200 psi. The Phase 11 fill (>80% of the grout fill in the tank) is a grout that provides structural stability to the tank system and prevents subsidence. Mix HRG2 was selected for this "structural layer" based on its relatively low compressive strength of similar to1150 psi after 28 days of curing. A final Phase III fill ("capping layer") is a grout of very high strength to provide protection against intrusion. Mix HRG9, which is an interpolated composition chosen to provide a projected 28-day compressive strength of 2400 psi, was selected for this capping layer. C1 Westinghouse Savannah River Co, Savannah River Natl Lab, Aiken, SC 29808 USA. RP Lorier, TH (reprint author), Westinghouse Savannah River Co, Savannah River Natl Lab, Aiken, SC 29808 USA. NR 7 TC 0 Z9 0 U1 0 U2 0 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, WESTERVILLE, OH 43081-8720 USA SN 1042-1122 BN 1-57498-189-7 J9 CERAM TRANS PY 2005 VL 168 BP 253 EP 260 PG 8 WC Engineering, Environmental; Materials Science, Ceramics; Nuclear Science & Technology SC Engineering; Materials Science; Nuclear Science & Technology GA BBP76 UT WOS:000226957900025 ER PT J AU Scott, MJ Brandt, CA Bunn, AL Engel, DW Eslinger, PW Miley, TB Napier, BA Prendergast, EL Nieves, LA AF Scott, MJ Brandt, CA Bunn, AL Engel, DW Eslinger, PW Miley, TB Napier, BA Prendergast, EL Nieves, LA TI Modeling long-term risk to environmental and human systems at the Hanford Nuclear Reservation: Scope and findings from the initial model SO ENVIRONMENTAL MANAGEMENT LA English DT Article DE risk; nuclear; hazardous waste; modeling; uncertainty; ecological; human health; economics; cultural ID UNCERTAINTY AB The Groundwater Protection Project at the US Department of Energy Hanford Site in Washington State is currently developing the means to assess the cumulative impact to human and ecological health and the regional economy and cultures from radioactive and chemical waste that will remain at the Hanford Site after the site closes. This integrated system is known as the System Assessment Capability (SAC). The SAC Risk/Impact Module discussed in the article uses media- and time-specific concentrations of contaminants estimated by the transport models of the integrated system to project potential impacts on the ecology of the Columbia River corridor, the health of persons who might live in or use the corridor or the upland Hanford environment, the local economy, and cultural resources. Preliminary Monte Carlo realizations from the SAC modeling system demonstrate the feasibility of large-scale uncertainty analysis of the complex relationships in the environmental transport of contaminants on the one hand and ecological, human, cultural, and economic risk on the other. Initial impact results show very small long-term risks for the 10 radionuclides and chemicals evaluated. The analysis also helps determine science priorities to reduce uncertainty and suggests what actions matter to reduce risks. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. Argonne Natl Lab, Argonne, IL 60439 USA. RP Scott, MJ (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. EM michael.scott@pnl.gov NR 35 TC 4 Z9 5 U1 0 U2 6 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0364-152X J9 ENVIRON MANAGE JI Environ. Manage. PD JAN PY 2005 VL 35 IS 1 BP 84 EP 98 DI 10.1007/s00267-002-0071-1 PG 15 WC Environmental Sciences SC Environmental Sciences & Ecology GA 915IT UT WOS:000228298600007 PM 15984066 ER PT J AU Ruggiero, CE Boukhalfa, H Forsythe, JH Lack, JG Hersman, LE Neu, MP AF Ruggiero, CE Boukhalfa, H Forsythe, JH Lack, JG Hersman, LE Neu, MP TI Actinide and metal toxicity to prospective bioremediation bacteria SO ENVIRONMENTAL MICROBIOLOGY LA English DT Article ID DEINOCOCCUS-RADIODURANS; SHEWANELLA-PUTREFACIENS; PSEUDOMONAS-PUTIDA; FE(III)-REDUCING BACTERIUM; MICROBIAL REDUCTION; HEAVY-METALS; FERRIC-OXIDE; RESISTANCE; MICROORGANISMS; U(VI) AB Bacteria may be beneficial for alleviating actinide contaminant migration through processes such as bioaccumulation or metal reduction. However, sites with radioactive contamination often contain multiple additional contaminants, including metals and organic chelators. Bacteria-based bioremediation requires that the microorganism functions in the presence of the target contaminant, as well as other contaminants. Here, we evaluate the toxicity of actinides, metals and chelators to two different bacteria proposed for use in radionuclide bioremediation, Deinococcus radiodurans and Pseudomonas putida, and the toxicity of Pu(VI) to Shewanella putrefaciens. Growth of D. radiodurans was inhibited at metal concentrations ranging from 1.8 muM Cd(II) to 32 mM Fe(III). Growth of P. putida was inhibited at metal concentrations ranging from 50 muM Ni(II) to 240 mM Fe(III). Actinides inhibited growth at mM concentrations: chelated Pu(IV), U(VI) and Np(V) inhibit D. radiodurans growth at 5.2, 2.5 and 2.1 mM respectively. Chelated U(VI) inhibits P. putida growth at 1.7 mM, while 3.6 mM chelated Pu(IV) inhibits growth only slightly. Pu(VI) inhibits S. putrefaciens growth at 6 mM. These results indicate that actinide toxicity is primarily chemical (not radiological), and that radiation resistance does not ensure radionuclide tolerance. This study also shows that Pu is less toxic than U and that actinides are less toxic than other types of metals, which suggests that actinide toxicity will not impede bioremediation using naturally occurring bacteria. C1 Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA. RP Neu, MP (reprint author), Los Alamos Natl Lab, Div Chem, POB 1663, Los Alamos, NM 87545 USA. EM mneu@lanl.gov NR 56 TC 43 Z9 46 U1 1 U2 27 PU BLACKWELL PUBLISHING LTD PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DG, OXON, ENGLAND SN 1462-2912 J9 ENVIRON MICROBIOL JI Environ. Microbiol. PD JAN PY 2005 VL 7 IS 1 BP 88 EP 97 DI 10.1111/j.1462-2920.2004.00666.x PG 10 WC Microbiology SC Microbiology GA 882RK UT WOS:000225955800010 PM 15643939 ER PT J AU Bell, ML O'Neill, MS Cifuentes, LA Braga, ALF Green, C Nweke, A Rogat, J Sibold, K AF Bell, ML O'Neill, MS Cifuentes, LA Braga, ALF Green, C Nweke, A Rogat, J Sibold, K CA Inter Symposium Socioeconomic Fact TI Challenges and recommendations for the study of socioeconomic factors and air pollution health effects SO ENVIRONMENTAL SCIENCE & POLICY LA English DT Editorial Material ID ACUTE RESPIRATORY-INFECTIONS; SELF-REPORTED HEALTH; HOSPITAL ADMISSIONS; BIOMASS COMBUSTION; COMMUNITY INVOLVEMENT; ENVIRONMENTAL-HEALTH; DEVELOPING-COUNTRIES; EMERGENCY-ROOM; TIME-SERIES; SAO-PAULO AB Persons with lower socioeconomic status (SES) may face higher risk from polluted air. This disproportionate burden may result from elevated exposure, due to proximity to roadways or indoor air pollution from burning of biomass, and from differences in nutrition and access to health care, among other factors. Several studies have explored this topic, however, there remain many unanswered questions. Research on how SES affects the relationship between air pollution and health faces challenges including the choice and interpretation of SES indicators; distinguishing indicators that describe the present state and those that describe historical conditions; the correlation between SES indicators and other variables; differential diagnosis and use of health care services based on SES; and varying perceptions of health. This paper summarizes these and other challenges and provides recommendations for how to move this research forward. Recommendations relate to what geographical locations, health outcomes, and pollutants should be studied; community involvement; choice of socioeconomic indicators; and policy concerns. The conclusions presented here are intended to encourage collaborations to better understand and reduce disparities in environmental health. (c) 2005 Elsevier Ltd. All rights reserved. C1 Yale Univ, Sch Forestry & Environm Studies, New Haven, CT 06511 USA. Univ Michigan, Sch Publ Hlth, Ann Arbor, MI 48109 USA. Catholic Univ Chile, Santiago, Chile. Univ Santo Amaro, Sch Med, Environm Pediat Program, Sao Paulo, Brazil. Univ Sao Paulo, Sch Med, Lab Expt Air Pollut, Sao Paulo, Brazil. Natl Renewable Energy Lab, Washington, DC USA. US EPA, Washington, DC 20460 USA. RP Bell, ML (reprint author), Yale Univ, Sch Forestry & Environm Studies, 205 Prospect St, New Haven, CT 06511 USA. EM michelle.bell@yale.edu RI Braga, Alfesio/G-6920-2012; Cifuentes, Luis/C-7081-2009 OI Braga, Alfesio/0000-0003-3254-3029; Cifuentes, Luis/0000-0001-7416-5607 NR 70 TC 19 Z9 20 U1 3 U2 9 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 1462-9011 J9 ENVIRON SCI POLICY JI Environ. Sci. Policy PY 2005 VL 8 IS 5 BP 525 EP 533 DI 10.1016/j.envsci.2005.06.003 PG 9 WC Environmental Sciences SC Environmental Sciences & Ecology GA 981HG UT WOS:000233077700009 ER PT J AU Wilbanks, TJ AF Wilbanks, TJ TI Issues in developing a capacity for integrated analysis of mitigation and adaptation SO ENVIRONMENTAL SCIENCE & POLICY LA English DT Article; Proceedings Paper CT Workshop on Mitigation and Adaptation Strategies for Climate Change CY 2003 CL Essen, GERMANY SP GKSS, Karlsruhe Res Ctr, inst Technol Assessment & Syst Anal, Ctr Adv Study Humanities DE climate change responses; mitigation; adaptation; integrated analysis; scale ID CLIMATE AB As policymakers and stakeholders increasingly consider relative merits and complementarities of climate change mitigation and adaptation strategies, it is important to improve analytical capacities to support this process. Because a single analytical approach is unlikely to fit all needs, this paper explores potentials for an integrated analytical framework that incorporates both top-down and bottom-up approaches. (c) 2005 Elsevier Ltd. All rights reserved. C1 Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. RP Wilbanks, TJ (reprint author), Oak Ridge Natl Lab, Div Environm Sci, POB 2008, Oak Ridge, TN 37831 USA. EM wilbankstj@ornl.gov NR 13 TC 15 Z9 15 U1 0 U2 5 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 1462-9011 J9 ENVIRON SCI POLICY JI Environ. Sci. Policy PY 2005 VL 8 IS 6 BP 541 EP 547 DI 10.1016/j.envsci.2005.06.014 PG 7 WC Environmental Sciences SC Environmental Sciences & Ecology GA 991MD UT WOS:000233817200002 ER PT J AU Mason, RR Abbot, ML Bodaly, RA Bullock, OR Driscoll, CT Evers, D Lindberg, SE Murray, M Swain, EB AF Mason, RR Abbot, ML Bodaly, RA Bullock, OR Driscoll, CT Evers, D Lindberg, SE Murray, M Swain, EB TI Monitoring the response to changing mercury deposition SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Article ID ATMOSPHERIC MERCURY; METHYL MERCURY; METHYLMERCURY; WISCONSIN; CYCLE C1 Univ Maryland, Chesapeake Biol Lab, College Pk, MD 20742 USA. Fisheries & Oceans Canada, Ottawa, ON, Canada. Syracuse Univ, Syracuse, NY 13244 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Mason, RR (reprint author), Univ Maryland, Chesapeake Biol Lab, College Pk, MD 20742 USA. RI Piper, Walter/B-7908-2009; Driscoll, Charles/F-9832-2014 NR 40 TC 43 Z9 43 U1 1 U2 21 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0013-936X J9 ENVIRON SCI TECHNOL JI Environ. Sci. Technol. PD JAN 1 PY 2005 VL 39 IS 1 BP 14A EP 22A DI 10.1021/es053155l PG 9 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA 884UM UT WOS:000226112200005 PM 15667068 ER PT J AU Anderson, JW Hartwell, SI Hameed, MJ AF Anderson, JW Hartwell, SI Hameed, MJ TI Regional comparisons of coastal sediment contamination detected by a biomarker (P450 HRGS; EPA Method 4425) SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Article ID POLYCYCLIC AROMATIC-HYDROCARBONS; REPORTER GENE SYSTEM; BIOASSAY; INDUCTION; BAY; CHEMICALS; PAHS; PCBS; FISH; RGS AB Pollution investigations by the Center for Coastal Monitoring and Assessment of the National Oceanic and Atmospheric Administration (NOAA) have been conducted since 1984 and have incorporated extensive biological and chemical analyses. Since 1993, one of the biological tests utilized in these studies has been the biomarker P450HRGS, which is more recently described as EPA Method 4425. Extracts of sediments are applied to a human cell line with a reporter gene (firefly luciferase) at the CYP1A1 site. Light produced by the extracts is a function of the concentrations and potencies of those compounds with an affinity for Ah-receptor (certain polycyclic aromatic hydrocarbons, polychlorinated biphenyls, and dioxins/ furans). These compounds are carcinogenic and can produce chronic toxicity, and those containing chlorine are persistent and bioaccumulated. Nineteen coastal regions and 1309 samples from the three U.S. coasts have been evaluated as part of the NOAA investigations. The stratified random sampling approach used by NOAA provides estimates of the areas (km(2)) of each region containing levels of the compounds above thresholds. From analysis of the database, sediments with concentrations at or below 11mug benzo[a]pyrene equivalents (B[a]PEq)/g would not be expected to produce effects on the benthos. At 32,mug B[a]PEq/g and above there is the potential for impacts on the biota, and above 60 mug/g, the degradation of the benthic community has been observed. Several of the regional surveys found no samples at or above 60 mug B[a]PEq/g, but 60% of the samples from New York Harbor (280 km(2)) were above this level. Analyses of data from Puget Sound and Chesapeake Bay demonstrate an increase in samples above 32 mug B[a]PEq/g in more populated and industrial regions. Method 4425 serves as both a biomarker, simulating the response of an organism (with CYP1A) exposed to inducing compounds, and as a bioanalytical technique measuring the levels of these chemicals in the samples. A targeted investigation of the distribution of the three important classes of compounds identified by Method 4425 would be more cost-effective by first screening samples by this method before expending substantial funds in the detailed chemical analysis of all samples. C1 Columbia Analyt Serv, Kelso, WA 98626 USA. NOAA, Ctr Coastal Monitoring & Assessment, NSCII, Silver Spring, MD 20910 USA. RP Anderson, JW (reprint author), Pacific NW Natl Lab, Battelle Marine Sci Lab, 1529 W Sequim Bay Rd, Sequim, WA 98382 USA. EM jw.anderson@pnl.gov NR 26 TC 8 Z9 8 U1 1 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0013-936X J9 ENVIRON SCI TECHNOL JI Environ. Sci. Technol. PD JAN 1 PY 2005 VL 39 IS 1 BP 17 EP 23 DI 10.1021/es049283b PG 7 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA 884UM UT WOS:000226112200007 PM 15667070 ER PT J AU Majzlan, J Myneni, SCB AF Majzlan, J Myneni, SCB TI Speciation of iron and sulfate in acid waters: Aqueous clusters to mineral precipitates SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Article ID RAY-ABSORPTION-SPECTROSCOPY; X-RAY; COMPLEXES; FE(II); TRENDS; GELS AB Acid mine drainage (AMD) contaminates surface water bodies, groundwater, soils, and sediments at innumerable locations around the world. AMD usually originates by weathering of pyrite (FeS2) and is rich in Fe and sulfate. In this study, we investigated speciation of Fe-II, Fe-III, and SO4 in acid waters by Fourier transform infrared and X-ray absorption spectroscopy. The molalities of sulfate (15 mmol/kg) and iron (10, 20, and 50 mmol/kg), and pH (1, 2, and 3) were chosen to mimic the concentration of ions in AMD waters. Sulfate and Fell either associate in outer-sphere complexes or do not associate at all. In contrast, sulfate interacts strongly with Fe-III. The predominating species in Fe-III-SO4 solutions are hydrogen-bonded complexes; inner-sphere complexes account only for 10 +/- 10% of the total sulfate. Our results show that the mode of interaction between Fe-III and sulfate is similar in aqueous phase and in nanocrystalline precipitate schwertmannite (similar toFeO(OH)(3/4)(SO4)(1/8)). Because of this similarity, schwertmannite should be the phase that controls solubility and availability of Fe-III, SO4, and indirectly also other components in the AMD solutions. C1 Princeton Univ, Dept Geosci, Princeton, NJ 08544 USA. Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA. RP Majzlan, J (reprint author), Univ Freiburg, Inst Mineral Petr & Geochem, Albertstr 23B, D-79104 Freiburg, Germany. EM Juraj.Majzlan@minpet.uni-freiburg.de NR 31 TC 61 Z9 62 U1 2 U2 35 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0013-936X J9 ENVIRON SCI TECHNOL JI Environ. Sci. Technol. PD JAN 1 PY 2005 VL 39 IS 1 BP 188 EP 194 DI 10.1021/es049664p PG 7 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA 884UM UT WOS:000226112200031 PM 15667094 ER PT J AU Smith, PG Koch, I Gordon, RA Mandoli, DF Chapman, BD Reimer, KJ AF Smith, PG Koch, I Gordon, RA Mandoli, DF Chapman, BD Reimer, KJ TI X-ray absorption near-edge structure analysis of arsenic species for application to biological environmental samples SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Article ID MINE TAILINGS; LUMBRICUS-RUBELLUS; SPECIATION; SPECTROSCOPY; ADSORPTION; OXIDATION; XAFS; RESISTANT; SORPTION; PYRITE AB Arsenic is an element that is ubiquitous in the environment and is known to form compounds with toxic, even carcinogenic properties. Arsenic toxicity is a function of its chemical form (species). Identification of arsenic species is necessary to accurately determine the transformation and fate of arsenicals as well as the actual risk posed by arsenic contamination. We report X-ray absorption near-edge structure (XANES) measurements of 16 biologically important arsenic compounds. Solid and aqueous standards were studied for differences in XANES spectral features, white line positions, stability during exposure to the beam, and stability between two beam exposures separated by 48 h. Samples containing As(Ill) (11870.0-11871.7 +/- 0.5 eV) and As(V) (11872.6-11875.3 +/- 0.5 eV) were easily distinguished by white line energies and could be further subdivided into a total of seven groups. Valuable examples include As(III)-sulfur compounds (11870.0 +/- 0.5 eV), arsenobetaine and arsenocholine (11872.6 +/- 0.5 eV), and a dimethyl arsinyl riboside (11873.3 +/- 0.5 eV). A growing number of environmental and biological studies use X-ray absorption spectroscopy (XAS) results to complement their more traditional analyses. Results provided here are intended to help make XAS more accessible to new users interested in the study of arsenic in the environment. C1 Queens Univ, Dept Biol, Kingston, ON K7L 3N6, Canada. Royal Mil Coll Canada, Environm Sci Grp, Kingston, ON K7K 7B4, Canada. Simon Fraser Univ, Burnaby, BC V5A 1S6, Canada. Argonne Natl Lab, Adv Photon Source, Pacific NW Consortium Collaborat Access Team, Argonne, IL 60439 USA. Univ Washington, Dept Biol, Seattle, WA 98195 USA. Univ Washington, Dept Phys, Seattle, WA 98195 USA. Brookhaven Natl Lab, NSLS, Upton, NY 11973 USA. RP Reimer, KJ (reprint author), Queens Univ, Dept Biol, Kingston, ON K7L 3N6, Canada. EM reimer-k@rmc.ca NR 41 TC 78 Z9 79 U1 3 U2 30 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0013-936X J9 ENVIRON SCI TECHNOL JI Environ. Sci. Technol. PD JAN 1 PY 2005 VL 39 IS 1 BP 248 EP 254 DI 10.1021/es049358b PG 7 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA 884UM UT WOS:000226112200038 PM 15667101 ER PT J AU Anschel, DJ Foerster, B Yuasa, T Benveniste, H Zhong, Z Hainfeld, J Dilmanian, A AF Anschel, DJ Foerster, B Yuasa, T Benveniste, H Zhong, Z Hainfeld, J Dilmanian, A TI 9.4 T MRI characterization of a focal lesion in the rat brain induced by interlaced microbeam radiation SO EPILEPSIA LA English DT Meeting Abstract CT Joint Annual Meeting of the American-Epilepsy-Society/American-Clinical-Neurophsiology-Society CY DEC 02-06, 2005 CL Washington, DC SP Amer Epilepsy Soc, Amer Clin Neurophysiol Soc C1 SUNY Stony Brook, Stony Brook, NY 11794 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. Yamagata Univ, Yamagata 990, Japan. RI Yuasa, Tetsuya/F-5006-2013 NR 0 TC 0 Z9 0 U1 0 U2 3 PU BLACKWELL PUBLISHING PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND SN 0013-9580 J9 EPILEPSIA JI Epilepsia PY 2005 VL 46 SU 8 BP 280 EP 281 PG 2 WC Clinical Neurology SC Neurosciences & Neurology GA 973RK UT WOS:000232540101205 ER PT J AU Yang, ZQ Hamrick, JM AF Yang, ZQ Hamrick, JM TI Optimal control of salinity boundary condition in a tidal model using a variational inverse method SO ESTUARINE COASTAL AND SHELF SCIENCE LA English DT Article DE data assimilation; hydrodynamic modeling; tidal model; boundary condition; estuarine processes; salinity transport ID DATA ASSIMILATION; PARAMETER-ESTIMATION; GENERAL-CIRCULATION; TRANSPORT MODEL; SPECTRAL MODEL; EDDY VISCOSITY; ADJOINT METHOD; EQUATION AB A variational inverse data assimilation scheme is developed to estimate the salinity boundary conditions in a three-dimensional tidal hydrodynamic and salinity transport model. In this paper, the maximum incoming salinity value and the recovery time from the outflow salinity to the maximum incoming salinity at model open boundaries are treated as poorly known model control variables, and estimated using a variational inverse data assimilation scheme. The variational inverse model is tested in an idealized estuary using identical twin experiments, in which observed data are generated from the same model. Model tests with different initial guesses of the model control variables are conducted to evaluate the capability of the inverse model. A penalty technique is used to eliminate oscillations in the solution during the minimization process. The effects of preconditioning and penalty terms on the convergence rate are investigated. Model results demonstrate that the variational inverse model can be used to efficiently determine the optimal salinity open boundary conditions and improve the model state when there are no observed data available to specify the proper salinity open boundary conditions in a tidal model. (C) 2004 Elsevier Ltd. All rights reserved. C1 Battelle Seattle Res Ctr, Seattle, WA 98109 USA. Tetra Tech Inc, Fairfax, VA 22030 USA. RP Yang, ZQ (reprint author), Battelle Seattle Res Ctr, 1100 Dexter Ave N,Suite 400, Seattle, WA 98109 USA. EM yangz@battelle.org NR 39 TC 22 Z9 26 U1 0 U2 0 PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD PI LONDON PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND SN 0272-7714 J9 ESTUAR COAST SHELF S JI Estuar. Coast. Shelf Sci. PD JAN PY 2005 VL 62 IS 1-2 BP 13 EP 24 DI 10.1016/j.ecss.2004.08.003 PG 12 WC Marine & Freshwater Biology; Oceanography SC Marine & Freshwater Biology; Oceanography GA 888UO UT WOS:000226399900002 ER PT B AU Adams, SM AF Adams, SM BE Bortone, SA TI Using multiple response bioindicators to assess the health of estuarine ecosystems: An operational framework SO ESTUARINE INDICATORS SE MARINE SCIENCE SERIES LA English DT Proceedings Paper CT Estuarine Indicators Workshop CY OCT 29-31, 2003 CL Sanibel Isl, FL SP S Florida Water Management Dist, Florida Dept Environm Protect, Charlotte Harbor Natl Estuary Program ID CANONICAL VARIATE ANALYSIS; FISH HEALTH; INDICATORS; BIOMARKERS; ORGANISMS; COMMUNITY; STRESSORS; METRICS C1 Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. RP Adams, SM (reprint author), Oak Ridge Natl Lab, Div Environm Sci, POB 2008, Oak Ridge, TN 37831 USA. NR 37 TC 2 Z9 2 U1 1 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 0-8493-2822-5 J9 MAR SCI SER PY 2005 BP 5 EP 18 PG 14 WC Marine & Freshwater Biology SC Marine & Freshwater Biology GA BBQ56 UT WOS:000227159500002 ER PT B AU Adams, SM Bortone, SA AF Adams, SM Bortone, SA BE Bortone, SA TI Future directions for estuarine indicator research SO ESTUARINE INDICATORS SE MARINE SCIENCE SERIES LA English DT Proceedings Paper CT Estuarine Indicators Workshop CY OCT 29-31, 2003 CL Sanibel Isl, FL SP S Florida Water Management Dist, Florida Dept Environm Protect, Charlotte Harbor Natl Estuary Program ID PSEUDOREPLICATION C1 Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. RP Adams, SM (reprint author), Oak Ridge Natl Lab, Div Environm Sci, POB 2008, Oak Ridge, TN 37831 USA. NR 2 TC 5 Z9 6 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 0-8493-2822-5 J9 MAR SCI SER PY 2005 BP 503 EP 506 PG 4 WC Marine & Freshwater Biology SC Marine & Freshwater Biology GA BBQ56 UT WOS:000227159500033 ER PT S AU Bair, R AF Bair, R BE Cunha, JC Medeiros, PD TI Science on a large scale SO EURO-PAR 2005 PARALLEL PROCESSING, PROCEEDINGS SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article; Proceedings Paper CT 11th International Euro-Par Conference CY AUG 30-SEP 02, 2005 CL Lisbon, PORTUGAL SP IFIP TC10/WG 10 3, ACM SIGOPS, ACM SIGACT, ACM SIGMETRICS, ACM SIGMM, ACM SIGMOBLE, ACM SIGMOD, ACM SIGGOPS, ACM SIGSOFT, IEEE Comp Soc, TCPP, Ctr Informat & Informat, Univ Nova Lisboa, Dept Informat Fac Sci & Technol C1 Argonne Natl Lab, Math & Comp Sci Div, Argonne, IL 60439 USA. RP Bair, R (reprint author), Argonne Natl Lab, Math & Comp Sci Div, Argonne, IL 60439 USA. 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 3-540-28700-0 J9 LECT NOTES COMPUT SC PY 2005 VL 3648 BP 15 EP 15 PG 1 WC Computer Science, Theory & Methods SC Computer Science GA BDA40 UT WOS:000232259500004 ER PT S AU Strohmaier, E Shan, HZ AF Strohmaier, E Shan, HZ BE Cunha, JC Medeiros, PD TI Apex-Map: A synthetic scalable benchmark probe to explore data access performance on highly parallel systems SO EURO-PAR 2005 PARALLEL PROCESSING, PROCEEDINGS SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article; Proceedings Paper CT 11th International Euro-Par Conference CY AUG 30-SEP 02, 2005 CL Lisbon, PORTUGAL SP IFIP TC10/WG 10 3, ACM SIGOPS, ACM SIGACT, ACM SIGMETRICS, ACM SIGMM, ACM SIGMOBLE, ACM SIGMOD, ACM SIGGOPS, ACM SIGSOFT, IEEE Comp Soc, TCPP, Ctr Informat & Informat, Univ Nova Lisboa, Dept Informat Fac Sci & Technol AB With the increasing gap between processor, memory, and interconnect speed, the performances of scientific applications on high performance computing systems have become dominated by the ability to move global data. However, many benchmarks in the field of high performance computing focus on measuring the achieved CPU speed in MFlop/s. In this paper, we introduced a novel benchmark, Apex-Map, which focuses on global data movement and measures how fast global data can be fed into computational units. Apex-Map is a parameterized synthetic performance probe and integrates concepts for temporal and spatial locality into its design. By measuring the Apex-Map performance for a whole range of temporal and spatial localities performance surfaces can be generated which can be used to study the characteristics of the computational platforms and which are useful for performance comparison. Results on a vector platform and two superscalar platforms clearly reflect the design differences between these two types of systems. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Future Technol Grp, CRD, Berkeley, CA 94720 USA. RP Strohmaier, E (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Future Technol Grp, CRD, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM estrohmaier@lbl.gov; hshan@lbl.gov NR 6 TC 2 Z9 2 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 3-540-28700-0 J9 LECT NOTES COMPUT SC PY 2005 VL 3648 BP 114 EP 123 PG 10 WC Computer Science, Theory & Methods SC Computer Science GA BDA40 UT WOS:000232259500016 ER PT S AU Mohr, B DeRose, L Vetter, J AF Mohr, B DeRose, L Vetter, J BE Cunha, JC Medeiros, PD TI A performance measurement infrastructure for co-array Fortran SO EURO-PAR 2005 PARALLEL PROCESSING, PROCEEDINGS SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article; Proceedings Paper CT 11th International Euro-Par Conference CY AUG 30-SEP 02, 2005 CL Lisbon, PORTUGAL SP IFIP TC10/WG 10 3, ACM SIGOPS, ACM SIGACT, ACM SIGMETRICS, ACM SIGMM, ACM SIGMOBLE, ACM SIGMOD, ACM SIGGOPS, ACM SIGSOFT, IEEE Comp Soc, TCPP, Ctr Informat & Informat, Univ Nova Lisboa, Dept Informat Fac Sci & Technol AB CO-Array Fortran is a parallel programming language for scientific applications that provides a very intuitive mechanism for communication, and especially, one-sided communication. Despite the benefits of this integration of communication primitives with the language, analyzing the performance of CAF applications is not straightforward, which is due, in part, to a lack of tools for analysis of the communication behavior of CO-Array Fortran applications. In this paper, we present an extension to the KOJAK toolkit based on a source-to-source translator that supports performance instrumentation, data collection, trace generation, and performance visualization of CO-Array Fortran applications. We illustrate this approach with a performance visualization of a CO-Array Fortran version of the Halo kernel benchmark using the VAMPIR event trace visualization tool. C1 Forsch Zentrum Julich, ZAM, Julich, Germany. Cray Res Inc, Mendota Hts, MN USA. Oak Ridge Natl Lab, Oak Ridge, TN USA. RP Mohr, B (reprint author), Forsch Zentrum Julich, ZAM, Julich, Germany. EM b.mohr@fz-juelich.de; ldr@cray.com; vetterjs@ornl.gov NR 14 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 3-540-28700-0 J9 LECT NOTES COMPUT SC PY 2005 VL 3648 BP 146 EP 155 PG 10 WC Computer Science, Theory & Methods SC Computer Science GA BDA40 UT WOS:000232259500019 ER PT S AU Bailey, DH Snavely, A AF Bailey, DH Snavely, A BE Cunha, JC Medeiros, PD TI Performance modeling: Understanding the past and predicting the future SO EURO-PAR 2005 PARALLEL PROCESSING, PROCEEDINGS SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article; Proceedings Paper CT 11th International Euro-Par Conference CY AUG 30-SEP 02, 2005 CL Lisbon, PORTUGAL SP IFIP TC10/WG 10 3, ACM SIGOPS, ACM SIGACT, ACM SIGMETRICS, ACM SIGMM, ACM SIGMOBLE, ACM SIGMOD, ACM SIGGOPS, ACM SIGSOFT, IEEE Comp Soc, TCPP, Ctr Informat & Informat, Univ Nova Lisboa, Dept Informat Fac Sci & Technol AB We present an overview of current research in performance modeling, focusing on efforts underway in the Performance Evaluation Research Center (PERC). Using some new techniques, we are able to construct performance models that can be used to project the sustained performance of large-scale scientific programs on different systems, over a range of job and system sizes. Such models can be used by vendors in system designs, by computing centers in system acquisitions, and by application scientists to improve the performance of their codes. C1 Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Univ Calif San Diego, La Jolla, CA 92093 USA. RP Bailey, DH (reprint author), Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM dhbailey@lbl.gov; asnavely@cs.ucsd.edu NR 8 TC 4 Z9 4 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 3-540-28700-0 J9 LECT NOTES COMPUT SC PY 2005 VL 3648 BP 185 EP 195 PG 11 WC Computer Science, Theory & Methods SC Computer Science GA BDA40 UT WOS:000232259500023 ER PT S AU Ipek, E de Supinski, BR Schulz, M McKee, SA AF Ipek, E de Supinski, BR Schulz, M McKee, SA BE Cunha, JC Medeiros, PD TI An approach to performance prediction for parallel applications SO EURO-PAR 2005 PARALLEL PROCESSING, PROCEEDINGS SE Lecture Notes in Computer Science LA English DT Article; Proceedings Paper CT 11th International Euro-Par Conference CY AUG 30-SEP 02, 2005 CL Lisbon, PORTUGAL SP IFIP TC10/WG 10 3, ACM SIGOPS, ACM SIGACT, ACM SIGMETRICS, ACM SIGMM, ACM SIGMOBLE, ACM SIGMOD, ACM SIGGOPS, ACM SIGSOFT, IEEE Comp Soc, TCPP, Ctr Informat & Informat, Univ Nova Lisboa, Dept Informat Fac Sci & Technol AB Accurately modeling and predicting performance for large-scale applications becomes increasingly difficult as system complexity scales dramatically. Analytic predictive models are useful, but are difficult to construct, usually limited in scope, and often fail to capture subtle interactions between architecture and software. In contrast, we employ multilayer neural networks trained on input data from executions on the target platform. This approach is useful for predicting many aspects of performance, and it captures full system complexity. Our models are developed automatically from the training input set, avoiding the difficult and potentially error-prone process required to develop analytic models. This study focuses on the high-performance, parallel application SMG2000, a much studied code whose variations in execution times are still not well understood. Our model predicts performance on two large-scale parallel platforms within 5%-7% error across a large, multidimensional parameter space. C1 Cornell Univ, Sch Elect & Comp Engn, Comp Syst Lab, Ithaca, NY 14853 USA. Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Cornell Univ, Sch Elect & Comp Engn, Comp Syst Lab, Ithaca, NY 14853 USA. EM engin@csl.cornell.edu; sam@csl.cornell.edu; schulzm@llnl.gov; bronis@llnl.gov NR 8 TC 18 Z9 19 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 3-540-28700-0 J9 LECT NOTES COMPUT SC PY 2005 VL 3648 BP 196 EP 205 PG 10 WC Computer Science, Theory & Methods SC Computer Science GA BDA40 UT WOS:000232259500024 ER PT S AU Boman, EG Bozdag, D Catalyurek, U Gebremedhin, AH Manne, F AF Boman, EG Bozdag, D Catalyurek, U Gebremedhin, AH Manne, F BE Cunha, JC Medeiros, PD TI A scalable parallel graph coloring algorithm for distributed memory computers SO EURO-PAR 2005 PARALLEL PROCESSING, PROCEEDINGS SE Lecture Notes in Computer Science LA English DT Article; Proceedings Paper CT 11th International Euro-Par Conference CY AUG 30-SEP 02, 2005 CL Lisbon, PORTUGAL SP IFIP TC10/WG 10 3, ACM SIGOPS, ACM SIGACT, ACM SIGMETRICS, ACM SIGMM, ACM SIGMOBLE, ACM SIGMOD, ACM SIGGOPS, ACM SIGSOFT, IEEE Comp Soc, TCPP, Ctr Informat & Informat, Univ Nova Lisboa, Dept Informat Fac Sci & Technol AB In large-scale parallel applications a graph coloring is often carried out to schedule computational tasks. In this paper, we describe a new distributed-memory algorithm for doing the coloring itself in parallel. The algorithm operates in an iterative fashion; in each round vertices are speculatively colored based on limited information, and then a set of incorrectly colored vertices, to be recolored in the next round, is identified. Parallel speedup is achieved in part by reducing the frequency of communication among processors. Experimental results on a PC cluster using up to 16 processors show that the algorithm is scalable. C1 Sandia Natl Labs, Livermore, CA 94550 USA. Ohio State Univ, Columbus, OH 43210 USA. Old Dominion Univ, Norfolk, VA 23529 USA. Univ Bergen, N-5020 Bergen, Norway. RP Boman, EG (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA. EM egboman@sandia.gov; bozdagd@ece.osu.edu; umit@bmi.osu.edu; assefaw@cs.odu.edu; Fredrik.Manne@ii.uib.no RI Catalyurek, Umit/A-2454-2008 OI Catalyurek, Umit/0000-0002-5625-3758 NR 13 TC 7 Z9 7 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 3-540-28700-0 J9 LECT NOTES COMPUT SC PY 2005 VL 3648 BP 241 EP 251 PG 11 WC Computer Science, Theory & Methods SC Computer Science GA BDA40 UT WOS:000232259500029 ER PT S AU Malewicz, G Rosenberg, AL AF Malewicz, G Rosenberg, AL BE Cunha, JC Medeiros, PD TI Batch-scheduling dags for Internet-based computing (Extended abstract) SO EURO-PAR 2005 PARALLEL PROCESSING, PROCEEDINGS SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article; Proceedings Paper CT 11th International Euro-Par Conference CY AUG 30-SEP 02, 2005 CL Lisbon, PORTUGAL SP IFIP TC10/WG 10 3, ACM SIGOPS, ACM SIGACT, ACM SIGMETRICS, ACM SIGMM, ACM SIGMOBLE, ACM SIGMOD, ACM SIGGOPS, ACM SIGSOFT, IEEE Comp Soc, TCPP, Ctr Informat & Informat, Univ Nova Lisboa, Dept Informat Fac Sci & Technol AB The process of scheduling computations for Internet-based computing presents challenges not encountered with more traditional computing platforms. The looser coupling among participating computers makes it harder to utilize remote clients well, and raises the specter of a kind of "gridlock" that ensues when a computation stalls because no new tasks are eligible for execution. This paper studies the problem of scheduling computation-dags in a manner that renders tasks eligible for execution at the maximum possible rate. Earlier work has developed a framework for such scheduling when a new task is allocated to a remote client as soon as it returns the results from an earlier task. The proof in that work that many dags cannot be scheduled optimally within this paradigm signaled the need for a companion theory that addresses the scheduling problem for all computation-dags. A new, batched, scheduling paradigm for Internet-based computing is developed in this work. Although optimal batched schedules always exist, computing such a schedule is NP-Hard, even for bipartite dags. In response, a polynomial-time algorithm is developed for producing optimal batched schedules for a rich family of dags obtained by "composing" tree-structured building-block dags. Finally, a fast heuristic schedule is developed for "expansive" dags. C1 Univ Alabama, Dept Comp Sci, Tuscaloosa, AL 35487 USA. Univ Massachusetts, Dept Comp Sci, Amherst, MA 01003 USA. Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. RP Malewicz, G (reprint author), Univ Alabama, Dept Comp Sci, Tuscaloosa, AL 35487 USA. NR 16 TC 5 Z9 5 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 3-540-28700-0 J9 LECT NOTES COMPUT SC PY 2005 VL 3648 BP 262 EP 271 PG 10 WC Computer Science, Theory & Methods SC Computer Science GA BDA40 UT WOS:000232259500031 ER PT S AU Keahey, K Foster, I Freeman, T Zhang, XH Galron, D AF Keahey, K Foster, I Freeman, T Zhang, XH Galron, D BE Cunha, JC Medeiros, PD TI Virtual workspaces in the Grid SO EURO-PAR 2005 PARALLEL PROCESSING, PROCEEDINGS SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article; Proceedings Paper CT 11th International Euro-Par Conference CY AUG 30-SEP 02, 2005 CL Lisbon, PORTUGAL SP IFIP TC10/WG 10 3, ACM SIGOPS, ACM SIGACT, ACM SIGMETRICS, ACM SIGMM, ACM SIGMOBLE, ACM SIGMOD, ACM SIGGOPS, ACM SIGSOFT, IEEE Comp Soc, TCPP, Ctr Informat & Informat, Univ Nova Lisboa, Dept Informat Fac Sci & Technol AB Despite significant progress in the development of Grid infrastructure, the provisioning of a customized and controllable remote execution environment remains an open issue. This paper introduces the concept of a virtual workspace, a configurable execution environment that can be created and managed as a first-class entity to reflect client requirements. Such workspaces can be dynamically deployed on a variety of resources decoupling the notion of environment and resource. We show how virtual workspaces fit into the Grid architecture, present an example implementation using virtual machines, and discuss our initial experiences using this system in practice and with applications. C1 Argonne Natl Lab, Argonne, IL 60439 USA. Univ Chicago, Chicago, IL 60637 USA. Ohio State Univ, Columbus, OH 43210 USA. RP Keahey, K (reprint author), Argonne Natl Lab, Argonne, IL 60439 USA. EM Keahey@mcs.anl.gov; foster@mcs.anl.gov; tfreeman@cs.uchicago.edu; hai@cs.uchicago.edu; galron@cis.ohio-state.edu NR 26 TC 34 Z9 34 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 3-540-28700-0 J9 LECT NOTES COMPUT SC PY 2005 VL 3648 BP 421 EP 431 PG 11 WC Computer Science, Theory & Methods SC Computer Science GA BDA40 UT WOS:000232259500049 ER PT S AU Dumitrescu, CL Foster, I AF Dumitrescu, CL Foster, I BE Cunha, JC Medeiros, PD TI GRUBER: A grid resource usage SLA broker SO EURO-PAR 2005 PARALLEL PROCESSING, PROCEEDINGS SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article; Proceedings Paper CT 11th International Euro-Par Conference CY AUG 30-SEP 02, 2005 CL Lisbon, PORTUGAL SP IFIP TC10/WG 10 3, ACM SIGOPS, ACM SIGACT, ACM SIGMETRICS, ACM SIGMM, ACM SIGMOBLE, ACM SIGMOD, ACM SIGGOPS, ACM SIGSOFT, IEEE Comp Soc, TCPP, Ctr Informat & Informat, Univ Nova Lisboa, Dept Informat Fac Sci & Technol AB Resource sharing within grid collaborations usually implies specific sharing mechanisms at participating sites. Challenging policy issues can arise in such scenarios that integrate participants and resources spanning multiple physical institutions. Resource owners may wish to grant to one or more virtual organizations (VOs) the right to use certain resources subject to local usage policies and service level agreements, and each VO may then wish to use those resources subject to its usage policies. This paper describes GRUBER, an architecture and toolkit for resource usage service level agreement (SLA) specification and enforcement in a grid environment, and a series of experiments on a real grid, Grid3. The proposed mechanism allows resources at individual sites to be shared among multiple user communities. C1 Univ Chicago, Dept Comp Sci, Chicago, IL 60637 USA. Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. RP Dumitrescu, CL (reprint author), Univ Chicago, Dept Comp Sci, 5801 S Ellis Ave, Chicago, IL 60637 USA. EM cldumitr@cs.uchicago.edu; foster@mcs.anl.gov NR 17 TC 12 Z9 12 U1 0 U2 1 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 3-540-28700-0 J9 LECT NOTES COMPUT SC PY 2005 VL 3648 BP 465 EP 474 PG 10 WC Computer Science, Theory & Methods SC Computer Science GA BDA40 UT WOS:000232259500053 ER PT S AU Almasi, G Bhanot, G Chen, D Eleftheriou, M Fitch, B Gara, A Germain, R Gunnels, J Gupta, M Heidelberg, P Pitman, M Rayshubskiy, A Sexton, J Suits, F Vranas, P Walkup, B Ward, C Zhestkov, Y Curioni, A Andreoni, W Archer, C Moreira, J Loft, R Tufo, H Voran, T Riley, K AF Almasi, G Bhanot, G Chen, D Eleftheriou, M Fitch, B Gara, A Germain, R Gunnels, J Gupta, M Heidelberg, P Pitman, M Rayshubskiy, A Sexton, J Suits, F Vranas, P Walkup, B Ward, C Zhestkov, Y Curioni, A Andreoni, W Archer, C Moreira, J Loft, R Tufo, H Voran, T Riley, K BE Cunha, JC Medeiros, PD TI Early experience with scientific applications on the Blue Gene/L supercomputer SO EURO-PAR 2005 PARALLEL PROCESSING, PROCEEDINGS SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article; Proceedings Paper CT 11th International Euro-Par Conference CY AUG 30-SEP 02, 2005 CL Lisbon, PORTUGAL SP IFIP TC10/WG 10 3, ACM SIGOPS, ACM SIGACT, ACM SIGMETRICS, ACM SIGMM, ACM SIGMOBLE, ACM SIGMOD, ACM SIGGOPS, ACM SIGSOFT, IEEE Comp Soc, TCPP, Ctr Informat & Informat, Univ Nova Lisboa, Dept Informat Fac Sci & Technol AB Blue Gene/L uses a large number of low power processors, together with multiple integrated interconnection networks, to build a supercomputer with low cost, space and power consumption. It uses a novel system software architecture designed with application scalability in mind. However, whether real applications will scale to tens of thousands of processors has been an open question. In this paper, we describe early experience with several applications on a 16,384 node Blue Gene/L system. This study establishes that applications from a broad variety of scientific disciplines can effectively scale to thousands of processors. The results reported in this study represent the highest performance ever demonstrated for most of these applications, and in fact, show effective scaling for the first time ever on thousands of processors. C1 IBM Corp, Thomas J Watson Res Ctr, Yorktown Hts, NY 10598 USA. IBM Corp, Zurich Res Lab, CH-8803 Ruschlikon, Switzerland. IBM Corp, Syst & Technol Grp, Rochester, NY USA. Natl Ctr Atmospher Res, Boulder, CO 80307 USA. Univ Colorado, Boulder, CO 80309 USA. Argonne Natl Lab, Argonne, IL 60439 USA. RP Almasi, G (reprint author), IBM Corp, Thomas J Watson Res Ctr, Yorktown Hts, NY 10598 USA. EM gheorghe@us.ibm.com; gyan@us.ibm.com; chendong@us.ibm.com; mariae@us.ibm.com; bgf@us.ibm.com; alangara@us.ibm.com; rgermain@us.ibm.com; gunnels@us.ibm.com; mgupta@us.ibm.com; philiph@us.ibm.com; pitman@us.ibm.com; arayshu@us.ibm.com; sextonjc@us.ibm.com; suits@us.ibm.com; vranasp@us.ibm.com; walkup@us.ibm.com; tjcw@us.ibm.com; yuriyz@us.ibm.com; cur@zurich.ibm.com; and@zurich.ibm.com; archerc@us.ibm.com; jmoreira@us.ibm.com; loft@ucar.edu; tufo@cs.colorado.edu; theron.voran@cs.colorado.edu; riley@mcs.anl.gov NR 15 TC 11 Z9 11 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 3-540-28700-0 J9 LECT NOTES COMPUT SC PY 2005 VL 3648 BP 560 EP 570 PG 11 WC Computer Science, Theory & Methods SC Computer Science GA BDA40 UT WOS:000232259500063 ER PT S AU Nieplocha, J Baxter, D Tipparaju, V Rasmunssen, C Numrich, RW AF Nieplocha, J Baxter, D Tipparaju, V Rasmunssen, C Numrich, RW BE Cunha, JC Medeiros, PD TI Symmetric data objects and remote memory access communication for Fortran-95 applications SO EURO-PAR 2005 PARALLEL PROCESSING, PROCEEDINGS SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article; Proceedings Paper CT 11th International Euro-Par Conference CY AUG 30-SEP 02, 2005 CL Lisbon, PORTUGAL SP IFIP TC10/WG 10 3, ACM SIGOPS, ACM SIGACT, ACM SIGMETRICS, ACM SIGMM, ACM SIGMOBLE, ACM SIGMOD, ACM SIGGOPS, ACM SIGSOFT, IEEE Comp Soc, TCPP, Ctr Informat & Informat, Univ Nova Lisboa, Dept Informat Fac Sci & Technol AB Symmetric data objects have been introduced by Cray Inc. in context of SHMEM remote memory access communication on Cray T3D/E systems and later adopted by SGI for their Origin servers. Symmetric data objects greatly simplify parallel programming by allowing programmers to reference remote instance of a data structure by specifying address of the local counterpart. The current paper describes how symmetric data objects and remote memory access communication could be implemented in Fortran-95 without requiring specialized hardware or compiler support. NAS Multi-Grid parallel benchmark was used as an application example and demonstrated competitive performance to the standard MPI implementation. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. Los Alamos Natl Lab, Los Alamos, NM USA. Univ Minnesota, Minnesota Supercomp Inst, Minneapolis, MN USA. RP Nieplocha, J (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. NR 12 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 3-540-28700-0 J9 LECT NOTES COMPUT SC PY 2005 VL 3648 BP 720 EP 729 PG 10 WC Computer Science, Theory & Methods SC Computer Science GA BDA40 UT WOS:000232259500079 ER PT S AU Smith, BE Bode, B AF Smith, BE Bode, B BE Cunha, JC Medeiros, PD TI Performance effects of node mappings on the IBM BlueGene/L machine SO EURO-PAR 2005 PARALLEL PROCESSING, PROCEEDINGS SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article; Proceedings Paper CT 11th International Euro-Par Conference CY AUG 30-SEP 02, 2005 CL Lisbon, PORTUGAL SP IFIP TC10/WG 10 3, ACM SIGOPS, ACM SIGACT, ACM SIGMETRICS, ACM SIGMM, ACM SIGMOBLE, ACM SIGMOD, ACM SIGGOPS, ACM SIGSOFT, IEEE Comp Soc, TCPP, Ctr Informat & Informat, Univ Nova Lisboa, Dept Informat Fac Sci & Technol ID HYPERCUBES AB The IBM BlueGene/L supercomputer consists of up to 65536 compute nodes connected by several networks including a three-dimensional torus. The BlueGene/L control system allows a user to re-map MPI ranks to different physical torus coordinates at run-time. Effects of node mapping on application performance are investigated for Gray-code mappings with differing aspect ratios, permutations of the X, Y, and Z coordinates, random mappings and four new mapping types. Results are presented for three NAS parallel benchmarks - BT, CG, and MG - on 128-way partitions in co-processor mode and virtual node mode on the prototype BlueGene/L hardware. C1 IBM Rochester, Rochester, MN 55901 USA. Ames Lab, Ames, IA 50011 USA. RP Smith, BE (reprint author), IBM Rochester, 3605 Highway 52 N, Rochester, MN 55901 USA. EM smithbr@us.ibm.com; brett@scl.ameslab.gov OI Bode, Brett/0000-0002-4202-1024 NR 12 TC 11 Z9 11 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 3-540-28700-0 J9 LECT NOTES COMPUT SC PY 2005 VL 3648 BP 1005 EP 1013 PG 9 WC Computer Science, Theory & Methods SC Computer Science GA BDA40 UT WOS:000232259500110 ER PT J AU Arron, ST Ribeiro, RM Gettie, A Bohm, R Blanchard, J Yu, J Perelson, AS Hol, DD Zhang, LQ AF Arron, ST Ribeiro, RM Gettie, A Bohm, R Blanchard, J Yu, J Perelson, AS Hol, DD Zhang, LQ TI Impact of thymectomy on the peripheral T cell pool in rhesus macaques before and after infection with simian immunodeficiency virus SO EUROPEAN JOURNAL OF IMMUNOLOGY LA English DT Article DE thymectomy; T cell; macaque; SIV ID RECENT THYMIC EMIGRANTS; HIV-1 INFECTION; LYMPHOCYTES; TURNOVER; BLOOD; DYNAMICS; DIVISION; THERAPY; CD4(+); DEATH AB The goal of this study was to define, by surgical removal of the thymus in juvenile rhesus macaques, the role of the thymus in peripheral T cell homeostasis and to assess the significance of thymic output in SIV infection. By monitoring the changes in phenotypic T cell markers as well as in the numbers of TCR excisional circles - a recently described marker for recent thymic emigrants - following thymectomy, we present evidence that surgical thymectomy in juvenile macaques results in a faster decay of peripheral CD4+ cells, but does not cause a substantial shift in CD45RA(+) and CD45RA(-) populations. We were able to measure a thymic output of 0.32% and 0.21% per day of CD4+ and CD8+ cells, respectively. No compensatory extra-thymic source was detected in lymphoid tissues, although there was a small compensatory increase in T cell proliferation in the peripheral T cell pool. After SIV infection, thymectomized animals did not have higher viral loads, greater T cell decay, or faster disease progression. We therefore conclude that peripheral destructive processes, rather than a loss of thymic output, appear to be the main causes of T cell depletion in SrV infection. C1 Rockefeller Univ, Aaron Diamond AIDS Res Ctr, New York, NY 10016 USA. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM USA. Tulane Univ, Ctr Med, Tulane Natl Primate Res Ctr, Covington, LA USA. Univ Oxford, Dept Zool, Oxford OX1 3PS, England. RP Zhang, LQ (reprint author), Rockefeller Univ, Aaron Diamond AIDS Res Ctr, 455 1st Ave,7th Floor, New York, NY 10016 USA. EM lzhang@adarc.org FU NCRR NIH HHS [RR06555]; NIAID NIH HHS [AI46964, AI28433] NR 29 TC 27 Z9 30 U1 1 U2 8 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 0014-2980 J9 EUR J IMMUNOL JI Eur. J. Immunol. PD JAN PY 2005 VL 35 IS 1 BP 46 EP 55 DI 10.1002/eji.200424996 PG 10 WC Immunology SC Immunology GA 888VR UT WOS:000226402800007 PM 15593297 ER PT J AU Warburton, KE Clench, MR Ford, MJ White, J Rimmer, DA Carolan, VA AF Warburton, KE Clench, MR Ford, MJ White, J Rimmer, DA Carolan, VA TI Characterisation of derivatised monomeric and prepolymeric isocyanates by matrix-assisted laser desorption/ionisation time-of-flight mass spectrometry and structural elucidation by tandem mass spectrometry SO EUROPEAN JOURNAL OF MASS SPECTROMETRY LA English DT Article DE isocyanates; 1-(2-methoxyphenyl) piperazine derivatives; occupational hygiene; MALDL MALDI-MS-MS ID TOLUENE DIISOCYANATE; RESPIRATORY-DISEASE; ASTHMA AB Isocyanates are an important class of compounds in occupational hygiene monitoring due mainly to their behaviour as respiratory sensitisers. Here, we demonstrate the application of matrix-assisted laser desorption/ionisation mass spectrometry (MALDI-MS) and MALDI tandem mass spectrometry (MS-MS) to the analysis of derivatised isocyanate monomers and prepolymers. The aim of the work has been to gauge the selectivity obtainable from the direct analysis of isocyanate mixtures without prior separation. Monomeric and prepolymeric isocyanate mixtures were analysed as their 1-(2-methoxyphenyl) piperazine derivatives and the potential of MALDI time-of-flight (ToF)-MS for an NCO monitoring program was assessed. The results obtained demonstrated the possibility of direct mixture analysis by this method. MALDI-MS-MS was used for the elucidation of fragment structures in the prepolymer samples. The developed methodology was then applied to the analysis of swabs from an occupational hygiene monitoring scheme and enabled the identification of the isocyanate species detected. C1 Sheffield Hallam Univ, Biomed Res Ctr, Sheffield S1 1WB, S Yorkshire, England. Hlth & Safety Lab, Buxton SK17 9JN, Derbyshire, England. Oak Ridge Natl Lab, Oak Ridge, TN USA. RP Clench, MR (reprint author), Sheffield Hallam Univ, Biomed Res Ctr, Howard St, Sheffield S1 1WB, S Yorkshire, England. EM m.r.clench@shu.ac.uk OI Clench, Malcolm/0000-0002-0798-831X NR 19 TC 5 Z9 5 U1 0 U2 0 PU IM PUBLICATIONS PI W SUSSEX PA 6 CHARLTON MILL, CHARLTON, CHICHESTER,, W SUSSEX PO18 0HY, ENGLAND SN 1469-0667 J9 EUR J MASS SPECTROM JI Eur. J. Mass Spectrom. PY 2005 VL 11 IS 6 BP 565 EP 574 DI 10.1255/ejms.778 PG 10 WC Physics, Atomic, Molecular & Chemical; Spectroscopy SC Physics; Spectroscopy GA 000ML UT WOS:000234466100002 PM 16322663 ER PT J AU Savajols, H Jurado, B Mittig, W Baiborodin, D Catford, W Chartier, M Demonchy, CE Dlouhy, Z Gillibert, A Giot, L Khouaja, A Lepine-Szily, A Lukyanov, S Mrazek, J Orr, N Penionzhkevich, Y Pita, S Rousseau, M Roussel-Chomaz, P Villari, ACC AF Savajols, H Jurado, B Mittig, W Baiborodin, D Catford, W Chartier, M Demonchy, CE Dlouhy, Z Gillibert, A Giot, L Khouaja, A Lepine-Szily, A Lukyanov, S Mrazek, J Orr, N Penionzhkevich, Y Pita, S Rousseau, M Roussel-Chomaz, P Villari, ACC TI New mass measurements at the neutron drip-line SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pine Mt, GA ID N=28 SHELL CLOSURE; SULFUR ISOTOPES; GANIL; SPEG AB A new SPEC mass measurement experiment has been performed to determine masses closer to the neutron drip-line in the mass region A similar to 10-50. The precision of 37 masses has been improved and 8 masses were measured for the first time. The region covered was motivated by the study of shell structure and of shape coexistence in the region of closed shells N = 20 and N = 28. The evolution of the two neutron separation energies and the shell correction energy have been studied as a function of the neutron number. The results thus obtained provide a means of identifying, in exotic nuclei, new nuclear structure effects that are well illustrated by the changes of the conventional magic structure. C1 GANIL, F-14075 Caen, France. Nucl Phys Inst ASCR, Rez 25068, Czech Republic. Univ Surrey, Nucl Phys Dept, Guildford GU2 7XH, Surrey, England. Univ Liverpool, Dept Phys, Liverpool L69 7ZE, Merseyside, England. CEN Saclay, CEA, DSM, DAPNIA SPHN, F-91191 Gif Sur Yvette, France. ISMRA Univ Caen, LPC, F-6704 Caen, France. Univ Caen, F-6704 Caen, France. IReS, F-67037 Strasbourg, France. Univ Sao Paulo, IFUSP, BR-05315970 Sao Paulo, Brazil. JINR Dubna, FLNR, Moscow 101000, Russia. INFN, LNS, I-95129 Catania, Italy. Coll France, F-75231 Paris, France. LPTN Fac Sci, El Jadida 24000, Morocco. Argonne Natl Lab, Phys Div, Argonne, IL 60439 USA. RP GANIL, BP 55027, F-14075 Caen, France. EM savajols@ganil.fr RI Lepine-Szily , Alinka/I-3325-2012 OI Lepine-Szily , Alinka/0000-0001-6640-8824 NR 15 TC 14 Z9 14 U1 1 U2 4 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6001 EI 1434-601X J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 23 EP 26 DI 10.1140/epjad/i2005-06-189-6 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000005 ER PT J AU Sharma, KS Vaz, J Barber, RC Buchinger, F Clark, JA Crawford, JE Fukutani, H Greene, JP Gulick, S Heinz, A Lee, JKP Savard, G Zhou, Z Wang, JC AF Sharma, KS Vaz, J Barber, RC Buchinger, F Clark, JA Crawford, JE Fukutani, H Greene, JP Gulick, S Heinz, A Lee, JKP Savard, G Zhou, Z Wang, JC TI Atomic mass ratios for some stable isotopes of platinum relative to Au-197 SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA ID PENNING TRAP AB The Canadian Penning Trap mass spectrometer was designed to determine precisely the masses of stable and unstable isotopes. To date, such measurements have been carried out on approximately 60 short-lived species. A laser ablation ion source is also available to produce ions of stable isotopes, intended for use in calibrations, checks for systematic effects and for measurements involving stable isotopes. Mass ratios for the isotopes Pt-194,Pt-195,Pt-196,Pt-198 relative to Au-197 have been determined to a precision of better than 3 x 10(-8). These measurements were motivated, in part, by the long-standing discrepancy between earlier mass measurements and the Atomic Mass Evaluations in the mercury region. The results also demonstrate the stability of the measurement system and set limits on the magnitude of systematic effects. No significant deviations from accepted values were found. C1 Univ Manitoba, Dept Phys & Astron, Winnipeg, MB R3T 2N2, Canada. McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada. Argonne Natl Lab, Phys Div, Argonne, IL 60439 USA. RP Sharma, KS (reprint author), Univ Manitoba, Dept Phys & Astron, Winnipeg, MB R3T 2N2, Canada. EM sharma@physics.umanitoba.ca RI Crawford, John/A-3771-2012; Heinz, Andreas/E-3191-2014 NR 6 TC 2 Z9 2 U1 1 U2 2 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 45 EP 46 DI 10.1140/epjad/i2005-06-191-0 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000012 ER PT J AU Grzywacz, R AF Grzywacz, R TI The structure of nuclei near Ni-78 from isomer and decay studies SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pine Mt, GA ID NEUTRON-RICH NUCLEI; MU-S-ISOMERS; BETA-DECAY; NI-68; FRAGMENTATION; ISOTOPES; MAGICITY; STATES; BEAM; N=40 AB Recent progress in experimental decay studies in the region of the doubly magic nucleus Ni-78 is discussed. In particular new data on low-energy excitations in nickel isotopes has been obtained in experiments employing fragmentation reactions. The experimental data are confronted with different shell-model calculations. The position of the 2(+) energy levels and behavior of 8(+) isomers in even-even Ni70-76 isotopes has been interpreted. C1 Univ Tennessee, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Phys Div, Oak Ridge, TN USA. RP Univ Tennessee, Knoxville, TN 37996 USA. EM grzywacz@mail.phy.ornl.gov NR 30 TC 6 Z9 6 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6001 EI 1434-601X J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 89 EP 92 DI 10.1140/epjad/i2005-06-209-7 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000026 ER PT J AU Mazzocchi, C Grzywacz, R Batchelder, JC Bingham, CR Fong, D Hamilton, JH Hwang, JK Karny, M Krolas, W Liddick, SN Morton, AC Mantica, PF Mueller, WF Rykaczewski, KP Steiner, M Stolz, A Winger, JA AF Mazzocchi, C Grzywacz, R Batchelder, JC Bingham, CR Fong, D Hamilton, JH Hwang, JK Karny, M Krolas, W Liddick, SN Morton, AC Mantica, PF Mueller, WF Rykaczewski, KP Steiner, M Stolz, A Winger, JA TI Beta-delayed gamma and neutron emission near the double shell closure at Ni-78 SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA ID DECAY AB An experiment was performed at the National Superconducting Cyclotron Laboratory at Michigan State University to investigate beta decay of very neutron-rich cobalt isotopes. Beta-delayed neutron emission from Co71-74 has been observed for the first time. Preliminary results are reported. C1 Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Oak Ridge Associated Univ, Oak Ridge, TN 37831 USA. Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA. Oak Ridge Natl Lab, Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA. Univ Warsaw, Inst Expt Phys, PL-00681 Warsaw, Poland. Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA. Mississippi State Univ, Dept Phys, Mississippi State, MS 39762 USA. RP Mazzocchi, C (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. EM mazzocch@phy.ornl.gov RI Krolas, Wojciech/N-9391-2013; Morton, Colin/K-1561-2015 OI Morton, Colin/0000-0003-0214-7551 NR 15 TC 7 Z9 7 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 93 EP 94 DI 10.1140/epjad/i2005-06-212-0 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000027 ER PT J AU Millener, DJ AF Millener, DJ TI Beta decays of He-8, Li-9, and C-9 SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA ID LIGHT-NUCLEI AB The beta, decays. of He-8, Li-9, and C-9 are interpreted in terms of shell-model calculations in a p-shell basis. Particular attention is paid to the observed low-energy decays that exhibit large B(GT) values. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Millener, DJ (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. EM millener@bnl.gov NR 12 TC 5 Z9 5 U1 0 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 97 EP 98 DI 10.1140/epjad/i2005-06-049-5 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000029 ER PT J AU Sarazin, F Al-Khalili, JS Ball, GC Hackman, G Walker, PM Austin, RAE Eshpeter, B Finlay, P Garrett, PE Grinyer, GF Koopmans, KA Kulp, WD Leslie, JR Melconian, D Osborne, CJ Schumaker, MA Scraggs, HC Schwarzenberg, J Smith, MB Svensson, CE Waddington, JC Wood, JL AF Sarazin, F Al-Khalili, JS Ball, GC Hackman, G Walker, PM Austin, RAE Eshpeter, B Finlay, P Garrett, PE Grinyer, GF Koopmans, KA Kulp, WD Leslie, JR Melconian, D Osborne, CJ Schumaker, MA Scraggs, HC Schwarzenberg, J Smith, MB Svensson, CE Waddington, JC Wood, JL TI Halo neutrons and the beta-decay of Li-11 SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA C1 Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA. TRIUMF, Vancouver, BC V6T 2A3, Canada. Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England. McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4K1, Canada. Univ Guelph, Dept Phys, Guelph, ON N1G 2W1, Canada. Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA. Queens Univ, Dept Phys, Kingston, ON K7L 3N6, Canada. Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada. Univ Vienna, Dept Phys Nucl, A-1090 Vienna, Austria. RP Sarazin, F (reprint author), Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA. EM fsarazin@mines.edu RI Melconian, Dan/A-1331-2011 OI Melconian, Dan/0000-0002-0142-5428 NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 99 EP 99 DI 10.1140/epjad/i2005-06-200-4 PG 1 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000030 ER PT J AU Gross, CJ Rykaczewski, KP Shapira, D Winger, JA Batchelder, JC Bingham, CR Grzywacz, RK Hausladen, PA Krolas, W Mazzocchi, C Piechaczek, A Zganjar, EF AF Gross, CJ Rykaczewski, KP Shapira, D Winger, JA Batchelder, JC Bingham, CR Grzywacz, RK Hausladen, PA Krolas, W Mazzocchi, C Piechaczek, A Zganjar, EF TI A novel way of doing decay spectroscopy at a radioactive ion beam facility SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA AB A technique to enhance the purity of accelerated radioactive ion beams for decay studies is presented. The technique requires a 3 MeV/nucleon beam and a transmission ionization chamber. The gas pressure in the multi-anode ionization chamber is adjusted so that high-Z components of the beam are ranged out in the gas transmitting the more exotic, low-Z components to the measuring station. Initial tests with a, radioactive Ag-120 and In-120 mixed beam indicate at least a factor of 5 relative enhancement of the Ag-120 decay transitions. C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Mississippi State Univ, Dept Phys & Astron, Mississippi State, MS 39762 USA. Oak Ridge Natl Lab, UNIRIB, Oak Ridge, TN 37831 USA. Univ Tennessee, Dept Phys, Knoxville, TN 37966 USA. Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA. Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA. Louisiana State Univ, Dept Phys, Oak Ridge, TN 37831 USA. RP Gross, CJ (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. EM cgross@phy.ornl.gov RI Krolas, Wojciech/N-9391-2013 NR 5 TC 12 Z9 12 U1 0 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 115 EP 116 DI 10.1140/epjad/i2005-06-028-x PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000034 ER PT J AU Kautzsch, T Wohr, A Walters, WB Kratz, KL Pfeiffer, B Hannawald, M Shergur, J Arndt, O Hennrich, S Falahat, S Griesel, T Keller, O Aprahamian, A Brown, BA Mantica, PF Stoyer, MA Ravn, HL AF Kautzsch, T Wohr, A Walters, WB Kratz, KL Pfeiffer, B Hannawald, M Shergur, J Arndt, O Hennrich, S Falahat, S Griesel, T Keller, O Aprahamian, A Brown, BA Mantica, PF Stoyer, MA Ravn, HL CA ISOLDE 1S333 Rochester CHICO Gammasphere Collab TI Structure of neutron-rich even-even Cd-124,Cd-126 SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA ID N=82 AB New levels are reported for Cd-124,Cd-126 populated in the decay of Ag-124,Ag-126 isomers, respectively. In addition, new data from direct population of levels in Cd-124 from alpha-induced fission of U-238 are reported, along with new shell-model calculations for Cd-126. C1 Univ Mainz, Inst Kernchem, D-55128 Mainz, Germany. Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. Univ Maryland, Dept Chem, College Pk, MD 20742 USA. Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA. Michigan State Univ, NSCL, E Lansing, MI 48824 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. CERN, PH Dept, ISOLDE, CH-1211 Geneva, Switzerland. RP Kautzsch, T (reprint author), Univ Mainz, Inst Kernchem, D-55128 Mainz, Germany. EM awoehr@nd.edu; shergur@lanl.gov NR 6 TC 8 Z9 8 U1 1 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 117 EP 118 DI 10.1140/epjad/i2005-06-197-6 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000035 ER PT J AU Shergur, J Hoteling, N Wohr, A Walters, WB Arndt, O Brown, BA Davids, CN Dean, DJ Kratz, KL Pfeiffer, B Seweryniak, D AF Shergur, J Hoteling, N Wohr, A Walters, WB Arndt, O Brown, BA Davids, CN Dean, DJ Kratz, KL Pfeiffer, B Seweryniak, D CA ISOLDE Collaboration TI New level information on Z=51 isotopes, Sb-111(60) and Sb-134,135(83),(84) SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA AB New data for low-spin low-energy levels in Sb-111,Sb-134,Sb-135 are presented. The observed structures are compared to shell-model calculations. The monopole shifts for the d(5/2) and d(7/2) single-proton levels and the spin-orbit splitting for the d(5/2) and d(3/2) orbitals as N/Z moves from similar to 1 up to 1.6 are discussed. C1 Univ Maryland, Dept Chem, College Pk, MD 20742 USA. Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. Univ Mainz, Inst Kernchem, D-55128 Mainz, Germany. Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA. Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. CERN, PH Dept, ISOLDE, CH-1211 Geneva, Switzerland. RP Shergur, J (reprint author), Univ Maryland, Dept Chem, College Pk, MD 20742 USA. EM shergur@phy.anl.gov; hoteling@wam.umd.edu OI Dean, David/0000-0002-5688-703X NR 9 TC 2 Z9 2 U1 0 U2 2 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 121 EP 122 DI 10.1140/epjad/i2005-06-071-7 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000037 ER PT J AU Chakrawarthy, RS Walker, PM Smith, MB Andreyev, AN Ashley, SF Ball, GC Becker, JA Daoud, JJ Garrett, PE Hackman, G Jones, GA Litvinov, Y Morton, AC Pearson, CJ Svensson, CE Williams, SJ Zganjar, EF AF Chakrawarthy, RS Walker, PM Smith, MB Andreyev, AN Ashley, SF Ball, GC Becker, JA Daoud, JJ Garrett, PE Hackman, G Jones, GA Litvinov, Y Morton, AC Pearson, CJ Svensson, CE Williams, SJ Zganjar, EF TI Discovery of a new 2.3 s isomer in neutron-rich Tm-174 SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pine Mt, GA AB A new program of K-isomer research has been initiated with the 8 pi spectrometer sited at the ISAC facility of TRIUMF. We discuss in this paper the identification of a new 2.3 s isomer in Tm-174 and its implications. C1 TRIUMF, Vancouver, BC V6T 2A3, Canada. Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Univ Guelph, Dept Phys, Guelph, ON N1G 2W1, Canada. GSI Darmstadt, D-642901 Darmstadt, Germany. Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA. RP TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada. EM rsc1@triumf.ca RI Morton, Colin/K-1561-2015; OI Morton, Colin/0000-0003-0214-7551; Ashley, Stephen/0000-0001-5139-2209; Smith, Martin/0000-0003-0834-1574 NR 5 TC 4 Z9 4 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6001 EI 1434-601X J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 125 EP 126 DI 10.1140/epjad/i2005-06-169-x PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000039 ER PT J AU Karny, M Batist, L Banu, A Becker, F Blazhev, A Burkard, K Bruchle, W Doring, J Faestermann, T Gorska, M Grawe, H Janas, Z Jungclaus, A Kavatsyuk, M Kavatsyuk, O Kirchner, R La Commara, M Mandal, S Mazzocchi, C Miernik, K Mukha, I Muralithar, S Plettner, C Plochocki, A Roeckl, E Romoli, M Rykaczewski, K Schadel, M Schmidt, K Schwengner, R Zylicz, J AF Karny, M Batist, L Banu, A Becker, F Blazhev, A Burkard, K Bruchle, W Doring, J Faestermann, T Gorska, M Grawe, H Janas, Z Jungclaus, A Kavatsyuk, M Kavatsyuk, O Kirchner, R La Commara, M Mandal, S Mazzocchi, C Miernik, K Mukha, I Muralithar, S Plettner, C Plochocki, A Roeckl, E Romoli, M Rykaczewski, K Schadel, M Schmidt, K Schwengner, R Zylicz, J TI Beta-decay studies near Sn-100 SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA ID GAMOW-TELLER STRENGTH; NUCLEI; IN-103 AB The beta-decay of Sn-102 was studied by using high-resolution germanium detectors as well as a Total Absorption Spectrometer (TAS). A decay scheme has been constructed based on the gamma-gamma coincidence data. The total experimental Gamow-Teller strength B-GT(exp) of Sn-102 was deduced from the TAS data to be 4.2(9). A search for beta-delayed gamma-rays of Sn-100 decay remained unsuccessful. However, a Gamow-Teller hindrance factor h = 2.2(3), and a cross-section of about 3 nb for the production of Sn-100 in fusion-evaporation reaction between Ni-58 beam and Cr-50 target have been estimated from the data on heavier tin isotopes. The estimated hindrance factor is similar to the values derived for lower shell nuclei. C1 Warsaw Univ, Inst Expt Phys, Warsaw, Poland. St Petersburg Nucl Phys Inst, St Petersburg, Russia. Gesell Schwerionenforsch mbH, D-6100 Darmstadt, Germany. Univ Sofia, BU-1126 Sofia, Bulgaria. Tech Univ Munich, D-8000 Munich, Germany. Univ Autonoma Madrid, Dept Fis Teor, E-28049 Madrid, Spain. Taras Shevchenko Kiev Natl Univ, Kiev, Ukraine. Univ Naples Federico II, Dipartimento Sci Fis, Naples, Italy. Ist Nazl Fis Nucl, Naples, Italy. Ctr Nucl Sci, New Delhi, India. Oak Ridge Natl Lab, Oak Ridge, TN USA. Continental Teves AG & Co, Frankfurt, Germany. Rossendorf Inc, Forschungszentrum Rossendorf EV, Nucl Engn & Analyt Inc, D-01314 Dresden, Germany. RP Karny, M (reprint author), Warsaw Univ, Inst Expt Phys, Warsaw, Poland. EM karny@mimuw.edu.pl RI Kavatsyuk, Myroslav/K-3159-2013 NR 26 TC 11 Z9 11 U1 1 U2 3 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 135 EP 138 DI 10.1140/epjad/i2005-06-037-9 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000042 ER PT J AU Grzywacz, R Karny, M Rykaczewski, KP Batchelder, JC Bingham, CR Fong, D Gross, CJ Krolas, W Mazzocchi, C Piechaczek, A Tantawy, MN Winger, JA Zganjar, EF AF Grzywacz, R Karny, M Rykaczewski, KP Batchelder, JC Bingham, CR Fong, D Gross, CJ Krolas, W Mazzocchi, C Piechaczek, A Tantawy, MN Winger, JA Zganjar, EF TI Discovery of the new proton emitter Tm-144 SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pine Mt, GA ID FINE-STRUCTURE; EMISSION AB Evidence for the proton decay of Tm-144 was found in an experiment at the Recoil Mass Spectrometer at Oak Ridge National Laboratory. The Tm-144 events were found in the weak p5n channel of the fusion reaction using a Ni-58 beam at 340 MeV on a Mo-92 target. The observed proton decay energies are 1.70 MeV and 1.43 MeV and the half-life similar to 1.9 mu s. The decay properties suggest proton emission from the dominant pi h(11/2) part of the wave function and from the small pi f(7/2) admixture coupled to a quadrupole vibration. C1 Univ Tennessee, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Univ Warsaw, Inst Expt Phys, PL-00681 Warsaw, Poland. Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA. Oak Ridge Associated Univ, UNIRIB, Oak Ridge, TN 37831 USA. Vanderbilt Univ, Nashville, TN 37235 USA. Louisiana State Univ, Baton Rouge, LA 70803 USA. Mississippi State Univ, Dept Phys & Astron, Mississippi State, MS 39762 USA. RP Univ Tennessee, Knoxville, TN 37996 USA. EM grzywacz@mail.phy.ornl.gov RI Krolas, Wojciech/N-9391-2013 NR 10 TC 13 Z9 13 U1 0 U2 2 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6001 EI 1434-601X J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 145 EP 147 DI 10.1140/epjad/i2005-06-210-2 PG 3 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000044 ER PT J AU Batchelder, JC Tantawy, M Bingham, CR Danchev, M Fong, DJ Ginter, TN Gross, CJ Grzywacz, R Hagino, K Hamilton, JH Karny, M Krolas, W Mazzocchi, C Piechaczek, A Ramayya, A Rykaczewski, KP Stolz, A Winger, JA Yu, CH Zganjar, EF AF Batchelder, JC Tantawy, M Bingham, CR Danchev, M Fong, DJ Ginter, TN Gross, CJ Grzywacz, R Hagino, K Hamilton, JH Karny, M Krolas, W Mazzocchi, C Piechaczek, A Ramayya, A Rykaczewski, KP Stolz, A Winger, JA Yu, CH Zganjar, EF TI Study of fine structure in the proton radioactivity of Tm-146 SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA AB Measurement of fine structure in proton emission allows one to deduce the composition of the parent and daughter state's wavefunction populated by proton emission. This paper presents new experimental data on the fine-structure decay of Tm-146, and a new interpretation of its decay properties. C1 Oak Ridge Associated Univ, UNRIB, Oak Ridge, TN 37831 USA. Univ Tennessee, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. Vanderbilt Univ, Nashville, TN 37235 USA. Michigan State Univ, NSCL, E Lansing, MI 48824 USA. Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan. Univ Warsaw, Inst Expt Phys, PL-00681 Warsaw, Poland. Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA. Louisiana State Univ, Baton Rouge, LA 70803 USA. Mississippi State Univ, Mississippi State, MS 39762 USA. RP Batchelder, JC (reprint author), Oak Ridge Associated Univ, UNRIB, Oak Ridge, TN 37831 USA. EM batcheld@mail.phy.ornl.gov RI Krolas, Wojciech/N-9391-2013 NR 8 TC 7 Z9 7 U1 0 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 149 EP 150 DI 10.1140/epjad/i2005-06-010-8 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000045 ER PT J AU Tantawy, MN Bingham, CR Mazzocchi, C Grzywacz, R Krolas, W Rykaczewski, KP Batchelder, JC Gross, CJ Fong, D Hamilton, JH Hartley, DJ Hwang, JK Larochelle, Y Piechaczek, A Ramayya, AV Shapira, D Winger, JA Yu, CH Zganjar, EF AF Tantawy, MN Bingham, CR Mazzocchi, C Grzywacz, R Krolas, W Rykaczewski, KP Batchelder, JC Gross, CJ Fong, D Hamilton, JH Hartley, DJ Hwang, JK Larochelle, Y Piechaczek, A Ramayya, AV Shapira, D Winger, JA Yu, CH Zganjar, EF TI Study of the N=77 odd-Z isotones near the proton-drip line SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA ID SPECTROSCOPY; NUCLEI; DECAY AB The evolution of the pi h(11/2)vh(11/2) and pi h(11/2)vs(1/2) isomeric configurations was studied for the N = 77 isotones near the proton drip line. The decays of metastable levels in Eu-140, Tb-142, and Ho-144 were measured by means of X-, gamma- and conversion electron spectroscopy at the Recoil Mass Spectrometer at Oak Ridge. The sequence of isomeric levels in Eu-140 was experimentally determined. The half-life of the pi h(11/2)vh(11/2) state in Tb-142 was remeasured to be 25(1) mu s. The spins and parities of 5(-) and 8(+) for the pi h(11/2)vs(1/2) and pi h(11/2)vh(11/2) Tb-142 isomers, respectively, were established from measured multipolarities. No evidence for the expected 1(+) ground state was found in the Ho-144 decay data. C1 Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA. Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA. H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland. Oak Ridge Associated Univ, Oak Ridge, TN 37831 USA. Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA. Mississippi State Univ, Dept Phys & Astron, Mississippi State, MS 39762 USA. RP Tantawy, MN (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. EM mtantawy@utk.edu RI Krolas, Wojciech/N-9391-2013 NR 13 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 151 EP 153 DI 10.1140/epjad/i2005-06-194-9 PG 3 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000046 ER PT J AU Robinson, AP Davids, CN Seweryniak, D Woods, PJ Blank, B Carpenter, MP Davinson, T Freeman, SJ Hammond, N Hoteling, N Janssens, RVF Khoo, TL Liu, Z Mukherjee, G Scholey, C Shergur, J Sinha, S Sonzogni, AA Walters, WB Woehr, A AF Robinson, AP Davids, CN Seweryniak, D Woods, PJ Blank, B Carpenter, MP Davinson, T Freeman, SJ Hammond, N Hoteling, N Janssens, RVF Khoo, TL Liu, Z Mukherjee, G Scholey, C Shergur, J Sinha, S Sonzogni, AA Walters, WB Woehr, A TI Recoil decay tagging study of Tm-146 SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA AB Gamma-rays from the odd-odd transitional proton-emitting nucleus Tm-146 have been observed using the recoil-decay tagging technique. A rotational band similar to the h(11/2) decoupled band in Tm-147 has been observed. The particle decay of Tm-146 has been measured with improved statistics. A new decay scheme for Tm-146 is discussed with reference to prompt and delayed gamma-rays detected in coincidence with particle decays. C1 Univ Edinburgh, Edinburgh, Midlothian, Scotland. Argonne Natl Lab, Argonne, IL 60439 USA. CEN Bordeaux Gradignan, CNRS, IN2P3, Bordeaux, France. Univ Manchester, Manchester, Lancs, England. Univ Maryland, College Pk, MD 20742 USA. Univ Jyvaskyla, Jyvaskyla, Finland. Brookhaven Natl Lab, NNDC, Upton, NY 11937 USA. RP Robinson, AP (reprint author), Univ Edinburgh, Edinburgh, Midlothian, Scotland. EM a.robinson@ed.ac.uk RI Freeman, Sean/B-1280-2010; Scholey, Catherine/G-2720-2014; Carpenter, Michael/E-4287-2015; OI Freeman, Sean/0000-0001-9773-4921; Scholey, Catherine/0000-0002-8743-6071; Carpenter, Michael/0000-0002-3237-5734; Hammond, Neil/0000-0001-6390-8874 NR 7 TC 6 Z9 6 U1 0 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 155 EP 157 DI 10.1140/epjad/i2005-06-143-8 PG 3 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000047 ER PT J AU Seweryniak, D Davids, CN Robinson, A Woods, PJ Blank, B Carpenter, MP Davinson, T Freeman, SJ Hammond, N Hoteling, N Janssens, RVF Khoo, TL Liu, Z Mukherjee, G Shergur, J Sinha, S Sonzogni, AA Walters, WB Woehr, A AF Seweryniak, D Davids, CN Robinson, A Woods, PJ Blank, B Carpenter, MP Davinson, T Freeman, SJ Hammond, N Hoteling, N Janssens, RVF Khoo, TL Liu, Z Mukherjee, G Shergur, J Sinha, S Sonzogni, AA Walters, WB Woehr, A TI Particle-core coupling in. the transitional proton emitters Tm-145,Tm-146,Tm-147 SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA ID DECAY AB Excited states in 3 transitional proton emitters Tm-145,Tm-146,Tm-147 were studied using the Gammasphere Ge array coupled with the Argonne Fragment Mass Analyzer. The Tm-147 level scheme was extended and the unfavored signature partner of the decoupled proton h(11/2) band was found. A. rotational band feeding the high-spin isomer in Tm-146 was observed with properties similar to the Tm-147 ground-state band. A regular sequence of gamma rays correlated with the ground-state Tm-145 proton decay has properties of the h(11/2) band as well. In addition, coincidences between the fine structure proton line and the 2+ -> 0+ gamma-ray transition in the daughter nucleus were detected. Comparison between level energies measured and calculated using the Particle Rotor model indicates that Tm-145 might be gamma-soft. C1 Argonne Natl Lab, Argonne, IL 60439 USA. Univ Edinburgh, Edinburgh, Midlothian, Scotland. CEN Bordeaux Gradignan, CNRS, IN2P3, F-33175 Gradignan, France. Univ Manchester, Manchester, Lancs, England. Univ Maryland, College Pk, MD 20742 USA. Brookhaven Natl Lab, NNDC, Upton, NY 11937 USA. RP Seweryniak, D (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. EM seweryniak@anl.gov RI Freeman, Sean/B-1280-2010; Carpenter, Michael/E-4287-2015; OI Freeman, Sean/0000-0001-9773-4921; Carpenter, Michael/0000-0002-3237-5734; Hammond, Neil/0000-0001-6390-8874 NR 6 TC 5 Z9 5 U1 0 U2 2 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 159 EP 160 DI 10.1140/epjad/i2005-06-166-1 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000048 ER PT J AU Volya, A Davids, C AF Volya, A Davids, C TI Nuclear pairing and Coriolis effects in proton emitters SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA ID ATTENUATION AB We introduce a Hartree-Fock-Bogoliubov mean-field approach to treat the problem of proton emission from a deformed nucleus. By substituting a rigid rotor in a particle-rotor model with a mean field, we obtain a better description of experimental data in Ho-141. The approach also elucidates the softening of kinematic coupling between particle and collective rotation, the Coriolis attenuation problem. C1 Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA. Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. RP Volya, A (reprint author), Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA. EM volya@phy.fsu.edu RI Volya, Alexander/I-9457-2012 OI Volya, Alexander/0000-0002-1765-6466 NR 10 TC 6 Z9 6 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 161 EP 163 DI 10.1140/epjad/i2005-06-090-4 PG 3 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000049 ER PT J AU Nortersjauser, W Bushaw, BA Dax, A Drake, GWF Ewald, G Gotte, S Kirchner, R Kluge, HJ Kuhl, T Sanchez, R Wojtaszek, A Yan, ZC Zimmermann, C AF Nortersjauser, W Bushaw, BA Dax, A Drake, GWF Ewald, G Gotte, S Kirchner, R Kluge, HJ Kuhl, T Sanchez, R Wojtaszek, A Yan, ZC Zimmermann, C TI Measurement of the nuclear charge radii of Li-8,Li-9 - The last step towards the determination of the charge radius of Li-11 SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pine Mt, GA ID HYPERFINE-STRUCTURE; MODEL-CALCULATIONS; LIGHT; SHIFTS AB Nuclear charge radii of Li-6,Li-7,Li-8,Li-9 have recently been measured at the GSI on-line mass separator using high-resolution resonance ionization mass spectroscopy. We give a brief description of the experimental method. The results for the charge radii are compared with different theoretical predictions. C1 Gesell Schwerionenforsch mbH, D-64291 Darmstadt, Germany. Univ Tubingen, Inst Phys, D-72076 Tubingen, Germany. Pacific NW Natl Lab, Richland, WA 99352 USA. Univ Windsor, Dept Phys, Windsor, ON N9B 3P4, Canada. Univ New Brunswick, Dept Phys, Fredericton, NB E3B 5A3, Canada. RP Gesell Schwerionenforsch mbH, D-64291 Darmstadt, Germany. EM W.Noertershaeuser@gsi.de RI Kuhl, Thomas/C-2243-2012; Zimmermann, Claus/E-9598-2014; Yan, Zong-Chao/F-6668-2014 OI Kuhl, Thomas/0000-0001-6306-4579; NR 18 TC 3 Z9 3 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6001 EI 1434-601X J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 199 EP 200 DI 10.1140/epjad/i2005-06-053-9 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000058 ER PT J AU Benczer-Koller, N Kumbartzki, G Cooper, JR Mertzimekis, TJ Taylor, MJ Bernstein, L Hiles, K Maier-Komor, P McMahan, MA Phair, L Powell, J Speidel, KH Wutte, D AF Benczer-Koller, N Kumbartzki, G Cooper, JR Mertzimekis, TJ Taylor, MJ Bernstein, L Hiles, K Maier-Komor, P McMahan, MA Phair, L Powell, J Speidel, KH Wutte, D TI First g-factor measurement using a radioactive Kr-76 beam SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA AB The g factor of the first 2(1)(+) state of radioactive Kr-76 (T-1/2 = 14.8 h) has been measured using projectile Coulomb excitation in inverse kinematics combined with the transient magnetic-field technique. The Kr-76 beam was produced and accelerated in batch mode (re-cyclotron method) at the Lawrence Berkeley National Laboratory 88-Inch Cyclotron. The g factor g(Kr-76; 2(1)(+)) = +0.37(11) was obtained. C1 Rutgers State Univ, Dept Phys & Astron, New Brunswick, NJ 08903 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Michigan State Univ, NSCL, E Lansing, MI 48824 USA. Univ Brighton, Sch Engn, Brighton BN2 4GJ, E Sussex, England. Tech Univ Munich, D-85748 Garching, Germany. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany. RP Benczer-Koller, N (reprint author), Rutgers State Univ, Dept Phys & Astron, New Brunswick, NJ 08903 USA. EM nkoller@physics.rutgers.edu RI Taylor, Michael/N-1725-2015; OI Taylor, Michael/0000-0002-8718-3684; Mertzimekis, Theo/0000-0001-9191-7903 NR 4 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 203 EP 204 DI 10.1140/epjad/i2005-06-098-8 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000060 ER PT J AU Stone, NJ Stuchbery, AE Danchev, M Pavan, J Timlin, CL Baktash, C Barton, C Beene, JR Benczer-Koller, N Bingham, CR Dupak, J Galindo-Uribarri, A Gross, CJ Kumbartzki, G Radford, DC Stone, JR Zamfir, NV AF Stone, NJ Stuchbery, AE Danchev, M Pavan, J Timlin, CL Baktash, C Barton, C Beene, JR Benczer-Koller, N Bingham, CR Dupak, J Galindo-Uribarri, A Gross, CJ Kumbartzki, G Radford, DC Stone, JR Zamfir, NV TI First nuclear moment measurement with radioactive beams by recoil-in-vacuum method: g-factor of the 2(1)(+) state in Te-132 SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA ID IONS AB Following Coulomb excitation of the radioactive ion beam (RIB) Te-132 at HRIBF, we report the first use of the recoil-in-vacuum (RIV) method to determine the g-factor of the 2(1)(+) state to be (+)0.35(5). The advantages offered by the RIV method in the context of RIBs and modern detector arrays are discussed. C1 Univ Oxford, Dept Phys, Oxford OX1 3PU, England. Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Australian Natl Univ, Dept Nucl Phys, Canberra, ACT 0200, Australia. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Yale Univ, Wright Nucl Struct Lab, New Haven, CT 06520 USA. Univ York, Dept Phys, York YO12 5DD, N Yorkshire, England. Rutgers State Univ, Dept Phys & Astron, New Brunswick, NJ 08903 USA. Inst Sci Instruments, Brno 62464, Czech Republic. Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA. RP Stone, NJ (reprint author), Univ Oxford, Dept Phys, Oxford OX1 3PU, England. EM n.stone@physics.ox.ac.uk RI Zamfir, Nicolae Victor/F-2544-2011; Dupak, Jan/G-8823-2014; radford, David/A-3928-2015 NR 17 TC 3 Z9 3 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 205 EP 208 DI 10.1140/epjad/i2005-06-123-0 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000061 ER PT J AU Khouaja, A Villari, ACC Benjelloun, M Auger, G Baiborodin, D Catford, W Chartier, M Demonchy, CE Dlouhy, Z Gillibert, A Giot, L Hirata, D Lepine-Szily, A Mittig, W Orr, N Penionzhkevich, Y Pitae, S Roussel-Chomaz, P Saint-Laurent, MG Savajols, H AF Khouaja, A Villari, ACC Benjelloun, M Auger, G Baiborodin, D Catford, W Chartier, M Demonchy, CE Dlouhy, Z Gillibert, A Giot, L Hirata, D Lepine-Szily, A Mittig, W Orr, N Penionzhkevich, Y Pitae, S Roussel-Chomaz, P Saint-Laurent, MG Savajols, H TI Reaction cross-sections and reduced strong absorption radii of nuclei in the vicinity of closed shells N=20 and N=28 SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pine Mt, GA ID NEUTRON-RICH NUCLEI; DEFORMATION; ISOTOPES; NUMBER AB Energy integrated reaction cross-section measurements of around sixty neutron-rich nuclei covering the region of closed shells N = 20 and N = 28 were performed at intermediate energy (30-65 A.MeV) using direct method. In this experiment, silicon detectors were used as active targets. The reduced strong absorption radii, r(0)(2), for 19 new nuclei (F-27, Ne-27,Ne-30, Na-33, Mg-28,Mg-34-35, Al36-38, Si38-40, P41-42, S42-44 and Cl-45) are deduced for the first time. An additional 60 radii, also measured in this experiment, are compared to results from literature. A new quadratic parametrization is proposed for the nuclear radius as a function of the isospin in the region of closed shells N = 8 and N = 28. According to this parametrization, the skin effect is well reproduced and anomalous behaviour on the radii are observed in N-23, Ne-29, Na-33, Mg-35, S-44, Cl-45 and Ar-45 nuclei. C1 GANIL, F-14075 Caen, France. LPTN Fac Sci, El Jadida 24000, Morocco. Ist Nazl Fis Nucl, LNS, I-95129 Catania, Italy. Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. Coll France, F-75231 Paris, France. Nucl Phys Inst ASCR, Rez 25068, Czech Republic. Univ Surrey, Dept Nucl Phys, Guildford GU2 7XH, Surrey, England. Univ Liverpool, Dept Phys, Liverpool L69 7ZE, Merseyside, England. CENS, DSM,CEA, DAPNIA, SPHN, F-91191 Gif Sur Yvette, France. LPC ISMRA, F-6704 Caen, France. Univ Caen, F-6704 Caen, France. Open Univ, Dept Phys & Astron, Milton Keynes MK6 2HL, Bucks, England. Univ Sao Paulo, IFUSP, BR-05315970 Sao Paulo, Brazil. Joint Inst Nucl Res Dubna, FLNR, Moscow 101000, Russia. RP GANIL, BP 55027, F-14075 Caen, France. EM khouaja@lns.infn.it; villari@ganil.fr RI Lepine-Szily , Alinka/I-3325-2012; Hirata, Daisy/F-3199-2013 OI Lepine-Szily , Alinka/0000-0001-6640-8824; NR 23 TC 0 Z9 0 U1 0 U2 3 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6001 EI 1434-601X J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 223 EP 226 DI 10.1140/epjad/i2005-06-185-x PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000066 ER PT J AU Lepine-Szily, A Lima, GF Villari, ACC Mittig, W Lichtenthaler, R Chartier, M Orr, NA Angelique, JC Audi, G Casandjian, JM Cunsolo, A Donzaud, C Foti, A Gillibert, A Hirata, D Lewitowicz, M Lukyanov, S MacCormick, M Morrissey, DJ Ostrowski, AN Sherrill, BM Stephan, C Suomijarvi, T Tassan-Got, L Vieira, DJ Wouters, JM AF Lepine-Szily, A Lima, GF Villari, ACC Mittig, W Lichtenthaler, R Chartier, M Orr, NA Angelique, JC Audi, G Casandjian, JM Cunsolo, A Donzaud, C Foti, A Gillibert, A Hirata, D Lewitowicz, M Lukyanov, S MacCormick, M Morrissey, DJ Ostrowski, AN Sherrill, BM Stephan, C Suomijarvi, T Tassan-Got, L Vieira, DJ Wouters, JM TI Anomalous behaviour of matter radii of proton-rich Ga, Ge, As, Se and Br nuclei SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA ID INTERACTION CROSS-SECTIONS; CHARGE RADII; ISOTOPES AB Proton-rich isotopes of Ga, Ge, As, Se and Br had their total reaction cross-sections (sigma(R)) measured. Root-mean-squared matter radii were determined from Glauber model calculations, which reproduced the experimental sigma(R), values. For all isotopic series a decrease of the V-rms with increasing neutron number and a correlation with deformation was observed. C1 Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil. FACENS, Fac Engn Sorocaba, BR-18001970 Sorocaba, SP, Brazil. CEA, DSM, CNRS, IN2P3,GANIL, F-14076 Caen, France. Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. Univ Liverpool, Dept Phys, Liverpool L69 7ZE, Merseyside, England. ISMRA Univ Caen, CNRS, IN2P3, LPC, F-14050 Caen, France. Univ Caen, F-14050 Caen, France. CSNSM, CNRS, IN2P3, F-91405 Orsay, France. UPS, F-91405 Orsay, France. Ist Nazl Fis Nucl, I-95129 Catania, Italy. Inst Phys Nucl, F-91406 Orsay, France. CENS, CEA, DSM, DAPNIA,SPhN, F-91191 Gif Sur Yvette, France. Open Univ, Dept Phys & Astron, Milton Keynes MK7 6AA, Bucks, England. Joint Inst Nucl Res, FLNR, Moscow 101000, Russia. Michigan State Univ, NSCL, E Lansing, MI 48824 USA. Univ Mainz, Inst Phys, D-55099 Mainz, Germany. Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Lepine-Szily, A (reprint author), Univ Sao Paulo, Inst Fis, CP 66318, BR-05315970 Sao Paulo, Brazil. EM alinka.lepine@dfn.if.usp.br RI Sherrill, Bradley/B-4098-2009; Sherrill, Bradley/B-3378-2011; Cunsolo, Alessandro/C-7617-2013; Lepine-Szily , Alinka/I-3325-2012; Lichtenthaler, Rubens/K-7278-2012; Hirata, Daisy/F-3199-2013 OI Lepine-Szily , Alinka/0000-0001-6640-8824; Lichtenthaler, Rubens/0000-0001-8317-2630; NR 9 TC 7 Z9 7 U1 0 U2 4 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 227 EP 230 DI 10.1140/epjad/i2005-06-115-0 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000067 ER PT J AU Liang, JF Shapira, D Gross, CJ Varner, RL Amro, H Beene, JR Bierman, JD Caraley, AL Galindo-Uribarri, A del Campo, JG Hausladen, PA Jones, KL Kolata, JJ Larochelle, Y Loveland, W Mueller, PE Peterson, D Radford, DC Stracener, DW AF Liang, JF Shapira, D Gross, CJ Varner, RL Amro, H Beene, JR Bierman, JD Caraley, AL Galindo-Uribarri, A del Campo, JG Hausladen, PA Jones, KL Kolata, JJ Larochelle, Y Loveland, W Mueller, PE Peterson, D Radford, DC Stracener, DW TI Sub-barrier fusion induced by neutron-rich radioactive Sn-132 SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA AB Evaporation residue cross-sections measured with short-lived Sn-132 on Ni-64 at energies near and below the Coulomb barrier were found to be enhanced as compared to those measured with stable Sn isotopes on Ni-64. Subsequent measurements of fission following fusion of Sn-132 with Ni-64 and extending the measurement of evaporation residues to higher energies were carried out. C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. Gonzaga Univ, Phys Dept AD51, Spokane, WA 99258 USA. SUNY Coll Oswego, Dept Phys, Oswego, NY 13126 USA. Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA. Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37966 USA. Oregon State Univ, Dept Chem, Corvallis, OR 97331 USA. RP Liang, JF (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. EM liang@mail.phy.ornl.gov RI Jones, Katherine/B-8487-2011; radford, David/A-3928-2015 OI Jones, Katherine/0000-0001-7335-1379; NR 3 TC 0 Z9 0 U1 0 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 239 EP 240 DI 10.1140/epjad/i2005-06-117-x PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000069 ER PT J AU Shapira, D Liang, JF Gross, CJ Varner, RL Beene, JR Galindo-Uribarri, A Del Campo, JG Mueller, PE Stracener, DW Hausladen, PA Harlin, C Kolata, JJ Amro, H Loveland, W Jones, KL Bierman, JD Caraley, AL AF Shapira, D Liang, JF Gross, CJ Varner, RL Beene, JR Galindo-Uribarri, A Del Campo, JG Mueller, PE Stracener, DW Hausladen, PA Harlin, C Kolata, JJ Amro, H Loveland, W Jones, KL Bierman, JD Caraley, AL TI Measurement of evaporation residue cross sections from reactions with radioactive neutron-rich beams SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA AB Evaporation residue cross sections for Sn-132, Te-134 and Sn-124 with Ni-64 were measured. A compact system to measure these cross sections to values as low as 1 mb is described and a sample of data acquired with this system is shown. C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England. Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. Oregon State Univ, Dept Chem, Corvallis, OR 97331 USA. Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08856 USA. Gonzaga Univ, Phys Dept AD51, Spokane, WA 99258 USA. SUNY Coll Oswego, Dept Phys, Oswego, NY 13126 USA. RP Shapira, D (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. EM shapira@mail.phy.ornl.gov RI Jones, Katherine/B-8487-2011 OI Jones, Katherine/0000-0001-7335-1379 NR 7 TC 0 Z9 0 U1 0 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 241 EP 242 DI 10.1140/epjad/i2005-06-190-1 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000070 ER PT J AU Jones, KL Baktash, C Bardayan, DW Blackmon, JC Catford, WN Cizewski, JA Fitzgerald, RP Greife, U Johnson, MS Kozub, RL Livesay, RJ Ma, Z Nesaraja, CD Shapira, D Smith, MS Thomas, JS Visser, D AF Jones, KL Baktash, C Bardayan, DW Blackmon, JC Catford, WN Cizewski, JA Fitzgerald, RP Greife, U Johnson, MS Kozub, RL Livesay, RJ Ma, Z Nesaraja, CD Shapira, D Smith, MS Thomas, JS Visser, D TI Developing techniques to study A similar to 132 nuclei with (d, p) reactions in inverse kinematics SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pine Mt, GA ID D,P AB A measurement of the (d, p) reaction in inverse kinematics at energies near the Coulomb barrier using a stable beam of Sn-124 has been performed at ORNL's Holifield Radioactive Ion Beam Facility (HRIBF). The sensitivity of proton angular distributions to the transferred angular momentum has been demonstrated. Spectroscopic factors have been extracted for three states and are in agreement with previous measurements made in normal kinematics. C1 Rutgers State Univ, Dept Phys & Astron, New Brunswick, NJ 08903 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England. Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA. Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA. Oak Ridge Associated Univ, Oak Ridge, TN 37831 USA. Tennessee Technol Univ, Dept Phys, Cookeville, TN 38505 USA. Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. RP Rutgers State Univ, Dept Phys & Astron, New Brunswick, NJ 08903 USA. EM kate@phy.ornl.gov RI Visser, Dale/A-8117-2009; Jones, Katherine/B-8487-2011; Fitzgerald, Ryan/H-6132-2016; OI Visser, Dale/0000-0002-2891-4731; Jones, Katherine/0000-0001-7335-1379; Nesaraja, Caroline/0000-0001-5571-8341 NR 12 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6001 EI 1434-601X J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 283 EP 285 DI 10.1140/epjad/i2005-06-112-3 PG 3 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000081 ER PT J AU Romoli, M Mazzocco, M Vardaci, E Di Pietro, M De Francesco, A Bonetti, R De Rosa, A Glodariu, T Guglielmetti, A Inglima, G La Commara, M Martin, B Masone, V Parascandolo, P Pierroutsakou, D Sandoli, M Scopel, P Signorini, C Soramel, F Stroe, L Greene, J Heinz, A Henderson, D Jiang, CL Moore, EF Pardo, RC Rehm, KE Wuosmaa, A Liang, JF AF Romoli, M Mazzocco, M Vardaci, E Di Pietro, M De Francesco, A Bonetti, R De Rosa, A Glodariu, T Guglielmetti, A Inglima, G La Commara, M Martin, B Masone, V Parascandolo, P Pierroutsakou, D Sandoli, M Scopel, P Signorini, C Soramel, F Stroe, L Greene, J Heinz, A Henderson, D Jiang, CL Moore, EF Pardo, RC Rehm, KE Wuosmaa, A Liang, JF TI The EXODET apparatus: Features and first experimental results SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA AB The low intensity of the RIBS presently available at the first generation production facilities (10(5)-10(6) pps) and the necessity to reconstruct the event kinematics in RIB measurements require detection systems having both a large solid-angle coverage and a high granularity. The EXODET (EXOtic DETector) apparatus has been accomplished to respond to these requirements and the first experiment has been successfully performed studying the F-17 scattering on Pb-208 at 90.4 MeV. C1 Complesso Univ MSA, INFN Napoli, I-80126 Naples, Italy. Univ Padua, Padua, Italy. Ist Nazl Fis Nucl, Padua, Italy. Univ Naples Federico II, Naples, Italy. Univ Milan, Milan, Italy. Ist Nazl Fis Nucl, I-20133 Milan, Italy. Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, PD, Italy. Univ Udine, I-33100 Udine, Italy. Ist Nazl Fis Nucl, Udine, Italy. ANL, Argonne, IL USA. ORNL, Oak Ridge, TN USA. RP Romoli, M (reprint author), Complesso Univ MSA, INFN Napoli, I-80126 Naples, Italy. EM mauro.romoli@na.infn.it RI Heinz, Andreas/E-3191-2014; Glodariu, Tudor/F-6676-2011; Stroe, Lucian/A-3290-2009; Mazzocco, Marco/J-4393-2012 OI Stroe, Lucian/0000-0002-9306-3937; NR 3 TC 1 Z9 1 U1 0 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 289 EP 290 DI 10.1140/epjad/i2005-06-187-8 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000083 ER PT J AU Grawe, H Blazhev, A Gorska, M Mukha, I Plettner, C Roeckl, E Nowacki, F Grzywacz, R Sawicka, M AF Grawe, H Blazhev, A Gorska, M Mukha, I Plettner, C Roeckl, E Nowacki, F Grzywacz, R Sawicka, M TI Shell structure from Sn-100 to Ni-78: Implications for nuclear astrophysics SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pine Mt, GA ID NEUTRON-RICH NUCLEI; MU-S ISOMERS; EXOTIC NUCLEI; DECAY; MODEL; STABILITY; ISOTOPES; CLOSURES; REGION; AG-94 AB The single-particle structure and shell gap of Sn-100 is inferred from prompt in-beam and delayed gamma-ray spectroscopy of seniority and spin-gap isomers. Recent results in Ag-94,Ag-65 and Cd-98 stress the importance of large-scale shell model calculations employing realistic interactions for the isomerism, np-nh excitations and E2 polarisation of the Sn-100 core. The strong monopole interaction of the Delta l = 0 spin-flip partners pi g(9/2)-nu g(7/2) in N = 51 isotones below Sn-100 is echoed in the Delta l = 1 pi f(5/2)-nu g(9/2) pair of nucleons, which is decisive for the persistence of the N = 50 shell gap in Ni-78. This is corroborated by recent experimental data on Ni-70,Ni-76, Zn-78. The importance of monopole driven shell evolution for the appearance of new shell closures in neutron-rich nuclei and implications for r-process abundances near the N = 82 shell is discussed. C1 GSI Darmstadt, D-64291 Darmstadt, Germany. Univ Sofia, BU-1126 Sofia, Bulgaria. Katholieke Univ Leuven, Louvain, Belgium. RRC Kurchatov Inst, RU-123481 Moscow, Russia. Yale Univ, New Haven, CT USA. IReS, Strasbourg 2, France. ORNL, Oak Ridge, TN USA. Warsaw Univ, IEP, Warsaw, Poland. RP GSI Darmstadt, Planckstr 1, D-64291 Darmstadt, Germany. EM h.grave@gsi.de OI Mukha, Ivan/0000-0003-3072-5670 NR 42 TC 20 Z9 20 U1 0 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6001 EI 1434-601X J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 357 EP 362 DI 10.1140/epjad/i2005-06-025-1 PG 6 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000100 ER PT J AU Thomas, JS Bardayan, DW Blackmon, JC Cizewski, JA Fitzgerald, RP Greife, U Gross, CJ Johnson, MS Jones, KL Kozub, RL Liang, JF Livesay, RJ Ma, Z Moazen, BH Nesaraja, CD Shapira, D Smith, MS Visser, DW AF Thomas, JS Bardayan, DW Blackmon, JC Cizewski, JA Fitzgerald, RP Greife, U Gross, CJ Johnson, MS Jones, KL Kozub, RL Liang, JF Livesay, RJ Ma, Z Moazen, BH Nesaraja, CD Shapira, D Smith, MS Visser, DW TI Single-neutron excitations in neutron-rich N=51 nuclei SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA AB Single-neutron transfer reactions have been measured on two N = 50 isotones at the Holifield Radioactive Ion Beam Facility (HRIBF). The single-particle-like states of Ge-83 and Se-85 have been populated using radioactive ion beams of Ge-82 and Se-84 and the (d, p) reaction in inverse kinematics. The properties of the lowest-lying states-including excitation energies, orbital angular momenta, and spectroscopic factors-have been determined for these N = 51 nuclei. C1 Rutgers State Univ, Dept Phys & Astron, New Brunswick, NJ 08903 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA. Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA. Oak Ridge Associated Univ, Oak Ridge, TN 37831 USA. Tennessee Technol Univ, Dept Phys, Cookeville, TN 38505 USA. Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. RP Thomas, JS (reprint author), Rutgers State Univ, Dept Phys & Astron, New Brunswick, NJ 08903 USA. EM jeffthom@physics.rutgers.edu RI Visser, Dale/A-8117-2009; Jones, Katherine/B-8487-2011; Fitzgerald, Ryan/H-6132-2016; OI Visser, Dale/0000-0002-2891-4731; Jones, Katherine/0000-0001-7335-1379; Nesaraja, Caroline/0000-0001-5571-8341 NR 15 TC 3 Z9 3 U1 0 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 371 EP 374 DI 10.1140/epjad/i2005-06-127-8 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000103 ER PT J AU Radford, DC Baktash, C Barton, CJ Batchelder, J Beene, JR Bingham, CR Caprio, MA Danchev, M Fuentes, B Galindo-Uribarri, A del Campo, JG Gross, CJ Halbert, ML Hartley, DJ Hausladen, P Hwang, JK Krolas, W Larochelle, Y Liang, JF Mueller, PE Padilla, E Pavan, J Piechaczek, A Shapira, D Stracener, DW Varner, RL Woehr, A Yu, CH Zamfir, NV AF Radford, DC Baktash, C Barton, CJ Batchelder, J Beene, JR Bingham, CR Caprio, MA Danchev, M Fuentes, B Galindo-Uribarri, A del Campo, JG Gross, CJ Halbert, ML Hartley, DJ Hausladen, P Hwang, JK Krolas, W Larochelle, Y Liang, JF Mueller, PE Padilla, E Pavan, J Piechaczek, A Shapira, D Stracener, DW Varner, RL Woehr, A Yu, CH Zamfir, NV TI Coulomb excitation and transfer reactions with neutron-rich radioactive beams SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pine Mt, GA ID FACILITY; HRIBF AB Neutron-rich radioactive ion beams available from the HRIBF allow a variety of measurements around the Sn-132 region, including Coulomb excitation and single-nucleon transfer. The B (E2; 0(+) -> 2(+)) values for first 2(+) excited states of even-even neutron-rich Te132-136 and Sn126-130 have been measured by Coulomb excitation in inverse kinematics. Neutron transfer onto a Te-134 beam from Be-9 and C-13 targets, to populate single-particle states in Te-135, has also been studied. Gamma rays from the C-13(Te-134, C-12) reaction were used to identify the nu i(13/2) state in Te-135, at an energy of 2109 keV. These and other results, and plans for future experiments with these neutron-rich beams, are presented. C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Yale Univ, AW Wright Nucl Struct Lab, New Haven, CT 06520 USA. Oak Ridge Associated Univ, UNIRIB, Oak Ridge, TN 37831 USA. Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Univ Nacl Autonoma Mexico, Fac Ciencias, Mexico City 04510, DF, Mexico. Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA. Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Mexico City 04510, DF, Mexico. Louisiana State Univ, Baton Rouge, LA 70803 USA. RP Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. EM radfordd@phy.ornl.gov RI Zamfir, Nicolae Victor/F-2544-2011; Krolas, Wojciech/N-9391-2013; radford, David/A-3928-2015 NR 13 TC 15 Z9 16 U1 0 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6001 EI 1434-601X J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 383 EP 387 DI 10.1140/epjad/i2005-06-205-y PG 5 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000106 ER PT J AU Zamfir, NV Hughes, RO Casten, RF Radford, DC Barton, CJ Baktash, C Caprio, MA Galindo-Uribarri, A Gross, CJ Hausladen, PA McCutchan, EA Ressler, JJ Shapira, D Stracener, DW Yu, CH AF Zamfir, NV Hughes, RO Casten, RF Radford, DC Barton, CJ Baktash, C Caprio, MA Galindo-Uribarri, A Gross, CJ Hausladen, PA McCutchan, EA Ressler, JJ Shapira, D Stracener, DW Yu, CH TI Te-132 and single-particle density-dependent pairing SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA ID FACILITY AB Te-132 has been studied through beta(-) decay of Sb-132 radioactive beam at HRIBF leading to a significantly revised level scheme. A number of newly identified, likely 2(+) states allows for a test of recent quasiparticle random phase approximation calculations with a density-dependent pairing force. In addition, the removal of a previously proposed 3(-) state allows for a simple shell model interpretation of the low-lying negative-parity states. C1 Yale Univ, Wright Nucl Struct Lab, New Haven, CT 06520 USA. Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Univ York, York YO10 5DD, N Yorkshire, England. Yale Univ, Sloane Phys Lab, New Haven, CT 06520 USA. RP Zamfir, NV (reprint author), Yale Univ, Wright Nucl Struct Lab, New Haven, CT 06520 USA. EM richard.casten@yale.edu RI Zamfir, Nicolae Victor/F-2544-2011; radford, David/A-3928-2015 NR 10 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 389 EP 390 DI 10.1140/epjad/i2005-06-168-y PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000107 ER PT J AU Varner, RL Beene, JR Baktash, C Galindo-Uribarri, A Gross, CJ del Campo, JG Halbert, ML Hausladen, PA Larochelle, Y Liang, JF Mas, J Mueller, PE Padilla-Rodal, E Radford, DC Shapira, D Stracener, DW Urrego-Blanco, JP Yu, CH AF Varner, RL Beene, JR Baktash, C Galindo-Uribarri, A Gross, CJ del Campo, JG Halbert, ML Hausladen, PA Larochelle, Y Liang, JF Mas, J Mueller, PE Padilla-Rodal, E Radford, DC Shapira, D Stracener, DW Urrego-Blanco, JP Yu, CH TI Coulomb excitation measurements of transition strengths in the isotopes Sn-132,Sn-134 SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pine Mt, GA ID SN-132 AB We describe an experiment optimized to determine the transition probabilities for excitation of the first excited 2(+) state in Sn-132. The large excitation energy (4.04 MeV) and consequent small excitation cross-section, together with the modest beam intensity available makes this a challenging experiment. The preliminary result is B(E2; 0(+) -> 2(+)) = 0.11 +/- 0.03e(2)b(2). The high efficiency and generalized nature of the setup enabled us to also measure the first 2(+) state in the two-neutron nucleus Sn-134. We have determined a value of B (E2; 0(+) -> 2(+)) = 0.029 +/- 0.005e(2)b(2) which shows no sign of the asymmetry with respect to the N = 82 shell closure exhibited by the Te isotopes. C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Oak Ridge Natl Lab, Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA. Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Mexico City 04510, DF, Mexico. RP Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. EM varner@phy.ornl.gov RI radford, David/A-3928-2015 NR 14 TC 13 Z9 13 U1 0 U2 3 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6001 EI 1434-601X J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 391 EP 394 DI 10.1140/epjad/i2005-06-128-7 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000108 ER PT J AU Yu, CH Baktash, C Batchelder, JC Beene, JR Bingham, C Danchev, M Galindo-Uribarri, A Gross, CJ Hausladen, PA Krolas, W Liang, JF Padilla, E Pavan, J Radford, DC AF Yu, CH Baktash, C Batchelder, JC Beene, JR Bingham, C Danchev, M Galindo-Uribarri, A Gross, CJ Hausladen, PA Krolas, W Liang, JF Padilla, E Pavan, J Radford, DC TI Coulomb excitation of odd-A neutron-rich radioactive beams SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA AB A test experiment was carried out at the Holifield Radioactive Beam Facility to extend Coulomb excitation studies of heavy neutron-rich radioactive isotopes from even-even to odd-A nuclei. The experiment identified 10 and 4 gamma rays in Te-129 and Sb-129, respectively. The B(E2) value of one transition in Sb-129 was tentatively established. More B(E2) values in Te-129 and Sb-129 will be extracted upon completion of the data analysis. C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Oak Ridge Associated Univ, Oak Ridge, TN 37831 USA. Univ Tennessee, Knoxville, TN 37966 USA. Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA. RP Yu, CH (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. EM chy@mail.phy.ornl.gov RI Krolas, Wojciech/N-9391-2013; radford, David/A-3928-2015 NR 6 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 395 EP 396 DI 10.1140/epjad/i2005-06-144-7 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000109 ER PT J AU Yamada, K Motobayashi, T Aoi, N Baba, H Demichi, K Elekes, Z Gibelin, J Gomi, T Hasegawa, H Imai, N Iwasaki, H Kanno, S Kubo, T Kurita, K Matsuyama, YU Michimasa, S Minemura, T Notani, M Onishi, T Onishi, T Ong, HJ Ota, S Ozawa, A Saito, A Sakurai, H Shimoura, S Takeshita, E Takeuchi, S Tamaki, M Togano, Y Yanagisawa, Y Yoneda, K Tanihata, I AF Yamada, K Motobayashi, T Aoi, N Baba, H Demichi, K Elekes, Z Gibelin, J Gomi, T Hasegawa, H Imai, N Iwasaki, H Kanno, S Kubo, T Kurita, K Matsuyama, YU Michimasa, S Minemura, T Notani, M Onishi, T Onishi, T Ong, HJ Ota, S Ozawa, A Saito, A Sakurai, H Shimoura, S Takeshita, E Takeuchi, S Tamaki, M Togano, Y Yanagisawa, Y Yoneda, K Tanihata, I TI Reduced transition probabilities for the first 2(+) excited state in Cr-46 Fe-50, and Ni-54 SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA ID SCATTERING; RIKEN AB We measured B(E2; 0(g.s)(+) -> 2(1)(+)) values for the proton-rich Cr-46, Fe-50, and Ni-54 nuclides by intermediate-energy Coulomb excitation in order to study the systematic behavior of collectivity in the Z = 20-28 region. The present study completes the B(E2) values for the T-z = +/- 1 even-even pair nuclei up to Z = 28. The double ratios of proton and neutron matrix elements, (vertical bar M(n)vertical bar/vertical bar M(p)vertical bar)/(N/Z), have been extracted from the B(E2) values combining with the ones of their mirror nuclei, and compared with theoretical predictions. C1 RIKEN, Wako, Saitama 3510198, Japan. Univ Tokyo, CNS, Wako, Saitama 3510198, Japan. Rikkyo Univ, Dept Phys, Toshima Ku, Tokyo 1718501, Japan. Hungarian Acad Sci, Inst Nucl Res, H-4001 Debrecen, Hungary. Inst Phys Nucl, F-91406 Orsay, France. Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan. High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan. Argonne Natl Lab, Argonne, IL 60439 USA. Kyoto Univ, Dept Phys, Sakyo Ku, Kyoto 6068502, Japan. Univ Tsukuba, Dept Phys, Tsukuba, Ibaraki 3058577, Japan. Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA. RP Yamada, K (reprint author), RIKEN, 2-1 Hirosawa, Wako, Saitama 3510198, Japan. EM nari-yamada@riken.jp RI Shimoura, Susumu/E-8692-2012; Elekes, Zoltan/J-4531-2012; SAKURAI, HIROYOSHI/G-5085-2014; Takeuchi, Satoshi/O-1529-2016; OI Shimoura, Susumu/0000-0003-4741-2865; Elekes, Zoltan/0000-0003-0571-8719; GIBELIN, Julien/0000-0001-6751-3714 NR 14 TC 13 Z9 13 U1 0 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 409 EP 413 DI 10.1140/epjad/i2005-06-094-0 PG 5 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000112 ER PT J AU Ideguchi, E Niikura, M Ishida, C Fukuchi, T Baba, H Hokoiwa, N Iwasaki, H Koike, T Komatsubara, T Kubo, T Kurokawa, M Michimasa, S Miyakawa, K Morimoto, K Ohnishi, T Ota, S Ozawa, A Shimoura, S Suda, T Tarnaki, M Tanihata, I Wakabayashi, Y Yoshida, K Cederwal, B AF Ideguchi, E Niikura, M Ishida, C Fukuchi, T Baba, H Hokoiwa, N Iwasaki, H Koike, T Komatsubara, T Kubo, T Kurokawa, M Michimasa, S Miyakawa, K Morimoto, K Ohnishi, T Ota, S Ozawa, A Shimoura, S Suda, T Tarnaki, M Tanihata, I Wakabayashi, Y Yoshida, K Cederwal, B TI Study of high-spin states in the Ca-48 region by using secondary fusion reactions SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA ID MODEL AB An in-beam gamma-ray spectroscopy study, following a fusion reaction induced by a neutronrich secondary beam, Ar-46 + Be-9, is presented. A low-energy secondary beam of Ar-46 at similar to 5 MeV/A was developed in order to induce fusion reactions. Gamma-gamma coincidence and excitation function analysis was performed to study high-spin states in the vicinity of Ca-48, Ti49-52. C1 Univ Tokyo, Ctr Nucl Study, RIKEN, Wako Branch, Wako, Saitama 3510198, Japan. Royal Inst Technol, Dept Phys, S-10691 Stockholm, Sweden. Kyushu Univ, Dept Phys, Higashi Ku, Fukuoka 8128581, Japan. Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1330033, Japan. SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA. Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 3058577, Japan. RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan. Kyoto Univ, Dept Phys, Kyoto 6068502, Japan. Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. RP Ideguchi, E (reprint author), Univ Tokyo, Ctr Nucl Study, RIKEN, Wako Branch, 2-1 Hirosawa, Wako, Saitama 3510198, Japan. EM ideguchi@cns.s.u-tokyo.ac.jp RI Shimoura, Susumu/E-8692-2012; Fukuchi, Tomonori/D-3855-2017 OI Shimoura, Susumu/0000-0003-4741-2865; Fukuchi, Tomonori/0000-0003-3566-9954 NR 9 TC 4 Z9 4 U1 0 U2 3 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 429 EP 430 DI 10.1140/epjad/i2005-06-153-6 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000116 ER PT J AU Zhu, SJ Hamilton, JH Ramayya, AV Gore, PM Rasmussen, JO Dimitrov, V Frauendorf, S Xu, RQ Hwang, JK Fong, D Yang, LM Li, K Chen, YJ Zhang, XQ Jones, EF Luo, YX Lee, IY Ma, WC Cole, JD Drigert, MW Stoyer, M Ter-Akopian, GM Daniel, AV AF Zhu, SJ Hamilton, JH Ramayya, AV Gore, PM Rasmussen, JO Dimitrov, V Frauendorf, S Xu, RQ Hwang, JK Fong, D Yang, LM Li, K Chen, YJ Zhang, XQ Jones, EF Luo, YX Lee, IY Ma, WC Cole, JD Drigert, MW Stoyer, M Ter-Akopian, GM Daniel, AV TI Soft chiral vibrations in Mo-106 SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pine Mt, GA ID ISOTOPES; NUCLEI; MODEL AB High-spin states in neutron-rich Mo-106 were investigated by detecting the prompt gamma-rays in the spontaneous fission of Cf-252 with Gammasphere. Several new bands are observed. Two sets of Delta I = 1 bands in Mo-106 are found to have all the characteristics of a new class of chiral vibrational doublets. Tilted axis cranking calculations support the chiral assignment and indicate that the chirality is generated by neutron h(11/2) particle and mixed d(5/2), g(7/2) hole coupled to the short and long axis, repectively. C1 Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA. Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China. Joint Inst Heavy Ion Res, Oak Ridge, TN 37835 USA. Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. FZ Rossendorf, IKH, D-01314 Dresden, Germany. Mississippi State Univ, Dept Phys, Mississippi State, MS 39762 USA. Idaho Natl Lab, Idaho Falls, ID 83415 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Joint Inst Nucl Res, Flerov Lab Nucl React, Dubna 141980, Russia. RP Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA. EM zhushj@mail.tsinghua.edu.cn; j.h.hamilton@Vanderbilt.Edu; jae-kwang.hwang@Vanderbilt.Edu RI dimitrov, vesselin/A-8180-2009 NR 14 TC 29 Z9 37 U1 0 U2 6 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6001 EI 1434-601X J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 459 EP 462 DI 10.1140/epjad/i2005-06-204-0 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000128 ER PT J AU Hwang, JK Ramayya, AV Hamilton, JH Fong, D Beyer, CJ Li, K Gore, PM Jones, EF Luo, YX Rasmussen, JO Zhu, SJ Wu, SC Lee, IY Stoyer, MA Cole, JD Ter-Akopian, GM Daniel, A Donangelo, R AF Hwang, JK Ramayya, AV Hamilton, JH Fong, D Beyer, CJ Li, K Gore, PM Jones, EF Luo, YX Rasmussen, JO Zhu, SJ Wu, SC Lee, IY Stoyer, MA Cole, JD Ter-Akopian, GM Daniel, A Donangelo, R TI Half-life measurement of excited states in neutron-rich nuclei SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA AB Half-lives (T-1/2) of several states which decay by delayed gamma transitions were determined from time-gated triple gamma coincidence method. We determined, for the first time, the half-life of 330.6 + x state in Tc-108 and the half-life of 19/2(-) state in Te-133 based on the new level schemes. Five half-lives of Sr-95,Sr-97, Zr-99, Te-134 and Xe-137 are consistent-with the previously reported ones. These results indicate that this new method is useful for measuring the half-lives. C1 Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA. Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA. Joint Inst Nucl Res, Flerov Lab Nucl React, Dubna, Russia. Univ Fed Rio de Janeiro, Rio De Janeiro, Brazil. RP Hwang, JK (reprint author), Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA. EM jae-kwang.hwang@vanderbilt.edu NR 2 TC 5 Z9 5 U1 0 U2 2 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 463 EP 464 DI 10.1140/epjad/i2005-06-033-1 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000129 ER PT J AU Fong, D Hwang, JK Ramayya, AV Hamilton, JH Beyer, CJ Li, K Gore, PM Jones, EF Luo, YX Rasmussen, JO Zhu, SJ Wu, SC Lee, IY Fallon, P Stoyer, MA Asztalos, SJ Ginter, TN Cole, JD Ter-Akopian, GM Daniel, A Donangelo, R AF Fong, D Hwang, JK Ramayya, AV Hamilton, JH Beyer, CJ Li, K Gore, PM Jones, EF Luo, YX Rasmussen, JO Zhu, SJ Wu, SC Lee, IY Fallon, P Stoyer, MA Asztalos, SJ Ginter, TN Cole, JD Ter-Akopian, GM Daniel, A Donangelo, R TI Investigations of short half-life states from SF of Cf-252 SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA AB By using different time-gated triple gamma coincidence data, the half-lives (T-1/2) of several short lived states in neutron-rich nuclei have been studied. The first excited states in the ground state bands often decay by delayed gamma emission. By creating triple gamma coincidence spectra with time windows of 8, 16, 20, 28, and 48 ns, we have studied states with half-lives below 10 ns. The estimated half-lives of Zr-102, Xe-137, and Ba-143 are in reasonable agreement with previously reported values. We extract the first estimates of the half lives of the 2(+) states in Zr-104 and Ce-152. C1 Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA. Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA. Joint Inst Nucl Res, Flerov Lab Nucl React, Dubna, Russia. Univ Fed Rio de Janeiro, BR-21941 Rio De Janeiro, Brazil. RP Fong, D (reprint author), Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA. EM d.fong@vanderbilt.edu NR 3 TC 5 Z9 5 U1 0 U2 2 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 465 EP 466 DI 10.1140/epjad/i2005-06-176-y PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000130 ER PT J AU Luo, YX Rasmussen, JO Hamilton, JH Ramayya, AV Gelberg, A Stefanescu, I Hwang, JK Zhu, SJ Gore, PM Fong, D Jones, EF Wu, SC Lee, IY Ginter, TN Ma, WC Ter-Akopian, GM Daniel, AV Stoyer, MA Donangelo, R AF Luo, YX Rasmussen, JO Hamilton, JH Ramayya, AV Gelberg, A Stefanescu, I Hwang, JK Zhu, SJ Gore, PM Fong, D Jones, EF Wu, SC Lee, IY Ginter, TN Ma, WC Ter-Akopian, GM Daniel, AV Stoyer, MA Donangelo, R TI Shape transitions and triaxiality in neutron-rich odd-mass Y and Nb isotopes SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA ID ROTATIONAL BANDS AB New level schemes of Y-99,Y-101 and Nd-101,Nd-105 are established based on the measurement of prompt gamma-rays from the fission of Cf-252 at Gammasphere. Triaxial-rotor-plus-particle model calculations and fitting suggest that in the A approximate to 100 neutron-rich nuclei triaxial shape is prevalent in the region with Z > 41. C1 Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA. Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA. Univ Cologne, Inst Kernphys, D-50937 Cologne, Germany. Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China. Mississippi State Univ, Dept Phys, Mississippi State, MS 39762 USA. Joint Nucl Res Inst, Flerov Lab Nucl React, Dubna 141980, Russia. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Fed Univ Rio De Janeiro, BR-68528 Rio De Janeiro, RG, Brazil. RP Luo, YX (reprint author), Vanderbilt Univ, Dept Phys, 221 Kirkland Hall, Nashville, TN 37235 USA. EM yxluo@lbl.gov NR 8 TC 2 Z9 2 U1 0 U2 3 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 469 EP 470 DI 10.1140/epjad/i2005-06-044-x PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000132 ER PT J AU Gore, PM Jones, EF Hamilton, JH Ramayya, A Zhang, XQ Hwang, JK Luo, YX Li, K Zhu, SJ Ma, WC Rasmussen, JO Lee, IY Stoyer, M Cole, JD Daniel, AV Ter-Akopian, GM Oganessian, YT Donangelo, R Gupta, JB AF Gore, PM Jones, EF Hamilton, JH Ramayya, A Zhang, XQ Hwang, JK Luo, YX Li, K Zhu, SJ Ma, WC Rasmussen, JO Lee, IY Stoyer, M Cole, JD Daniel, AV Ter-Akopian, GM Oganessian, YT Donangelo, R Gupta, JB TI Unexpected rapid variations in odd-even level staggering in gamma-vibrational bands SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA AB Triple-gamma coincidence data were used to study the -y-vibrational bands to 14(+) in Mo104-106, to 13(+) in Ru-108,Ru-110 and 17(+) in Ru-112, and to 13(+), 15(+) in (112-116) Pd. The even-odd spin energy level splittings show rapid variations with spin and neutron number in these nuclides. With one exception, the Sm-Pt nuclei show no such reversal and much smaller staggering. C1 Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China. Mississippi State Univ, Dept Phys, Mississippi State, MS 39762 USA. Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Idaho Natl Lab, Idaho Falls, ID 83415 USA. JINR, Flerov Lab Nucl React, Dubna, Russia. Univ Fed Rio de Janeiro, BR-68528 Rio De Janeiro, RG, Brazil. Univ Delhi, Ramjas Coll, Delhi 110007, India. RP Gore, PM (reprint author), Vanderbilt Univ, Dept Phys & Astron, 221 Kirkland Hall, Nashville, TN 37235 USA. EM philip.m.gore@vanderbilt.edu NR 5 TC 7 Z9 7 U1 0 U2 2 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 471 EP 472 DI 10.1140/epjad/i2005-06-178-9 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000133 ER PT J AU Vary, JP Atramentov, OV Barrett, BR Hasan, M Hayes, AC Lloyd, R Mazur, AI Navratil, P Negoita, AG Nogga, A Ormand, WE Popescu, S Shehadeh, B Shirokov, AM Spence, JR Stetcu, I Stoica, S Weber, TA Zaytsev, SA AF Vary, JP Atramentov, OV Barrett, BR Hasan, M Hayes, AC Lloyd, R Mazur, AI Navratil, P Negoita, AG Nogga, A Ormand, WE Popescu, S Shehadeh, B Shirokov, AM Spence, JR Stetcu, I Stoica, S Weber, TA Zaytsev, SA TI Ab initio No-core shell model - Recent results and future prospects SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA ID PERTURBATION-THEORY; NUCLEI AB The ab initio No-Core Shell Model (NCSM) adopts an intrinsic Hamiltonian for all nucleons in the nucleus. Realistic two-nucleon and tri-nucleon interactions are incorporated. From this Hamiltonian, an Hermitian effective Hamiltonian is derived for a finite basis space conserving all the symmetries of the initial Hamiltonian. The resulting finite sparse matrix problem is solved by diagonalization on parallel computers. Applications range from light nuclei to multiquark systems and, recently, to similar problems in quantum field theory. We present this approach with a sample of recent results. C1 Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. Univ Arizona, Dept Phys, Tucson, AZ 85721 USA. Univ Jordan, Dept Phys, Amman, Jordan. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Arkansas State Univ, Dept Chem & Phys, State Univ, AR 72467 USA. Khabarovsk State Tech Univ, Dept Phys, Khabarovsk 680035, Russia. Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest, Magurele, Romania. Forschungszentrum Julich, Inst Kernphys, D-52425 Julich, Germany. Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119992, Russia. RP Vary, JP (reprint author), Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. EM jvary@iastate.edu RI Nogga, Andreas/A-3354-2008; Shirokov, Andrey/D-7054-2012 OI Nogga, Andreas/0000-0003-2156-748X; NR 32 TC 13 Z9 16 U1 0 U2 3 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 475 EP 480 DI 10.1140/epjad/i2005-06-214-x PG 6 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000134 ER PT J AU Navratil, P Ormand, WE Forssen, C Caurier, E AF Navratil, P Ormand, WE Forssen, C Caurier, E TI Ab initio no-core shell model calculations using realistic two- and three-body interactions SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pine Mt, GA ID MONTE-CARLO CALCULATIONS; LIGHT-NUCLEI AB There has been significant progress in the ab initio approaches to the structure of light nuclei. One such method is the ab initio no-core shell model (NCSM). Starting from realistic two- and three-nucleon interactions this method can predict low-lying levels in p-shell nuclei. In this contribution, we present a brief overview of the NCSM with examples of recent applications. We highlight our study of the parity inversion in Be-11, for which calculations were performed in basis spaces up to 9h Omega (dimensions reaching 7 x 10(8)). We also present our latest results for the p-shell nuclei using the Tucson-Melbourne TM'. three-nucleon interaction with several proposed parameter sets. C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. Univ Strasbourg, CNRS, IN2P3, Inst Rech Subatom, F-67037 Strasbourg, France. RP Lawrence Livermore Natl Lab, L-414,POB 808, Livermore, CA 94551 USA. EM navratill@llnl.gov RI Forssen, Christian/C-6093-2008 OI Forssen, Christian/0000-0003-3458-0480 NR 24 TC 5 Z9 5 U1 0 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6001 EI 1434-601X J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 481 EP 484 DI 10.1140/epjad/i2005-06-145-6 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000135 ER PT J AU Wloch, M Dean, DJ Gour, JR Piecuch, P Hjorth-Jensen, M Papenbrock, T Kowalski, K AF Wloch, M Dean, DJ Gour, JR Piecuch, P Hjorth-Jensen, M Papenbrock, T Kowalski, K TI Ab initio coupled cluster calculations for nuclei using methods of quantum chemistry SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pine Mt, GA ID TRIPLES; STATES; FIELD; EQUATIONS; SINGLES; DOUBLES; FORCES; MODEL; O-16 AB We report preliminary large scale ab initio calculations of ground and excited states of 160 using quantum chemistry inspired coupled cluster methods and realistic two-body interactions. By using the renormalized Hamiltonians obtained with a no-core G-matrix approach, we obtain the virtually converged results at the level of two-body interactions. Due to the polynomial scaling with the system size that characterizes coupled cluster methods, we can probe large model spaces with up to seven major oscillator shells, for which standard non-truncated shell-model calculations are not possible. C1 Michigan State Univ, Dept Chem, E Lansing, MI 48824 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Univ Oslo, Ctr Math & Applicat, N-0316 Oslo, Norway. Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA. Univ Oslo, Dept Phys, N-0316 Oslo, Norway. RP Michigan State Univ, Dept Chem, E Lansing, MI 48824 USA. EM piecuch@cem.msu.edu RI Hjorth-Jensen, Morten/B-1417-2008; Piecuch, Piotr/C-4435-2011; OI Dean, David/0000-0002-5688-703X; Papenbrock, Thomas/0000-0001-8733-2849 NR 27 TC 3 Z9 3 U1 0 U2 2 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6001 EI 1434-601X J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 485 EP 488 DI 10.1140/epjad/i2005-06-062-8 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000136 ER PT J AU Stetcu, I Barrett, BR Navratil, P Vary, JP AF Stetcu, I Barrett, BR Navratil, P Vary, JP TI Effective operators in the NCSM formalism SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA ID NUCLEI AB No-core shell model (NCSM) calculations using ab initio effective interactions are very successful in reproducing the experimental nuclear spectra. While a great deal of work has been directed toward computing effective interactions from bare nucleon-nucleon (NN) and three-nucleoli forces, less progress has been made in calculating the effective operators. Thus, except for the relative kinetic energy, the proton radius, and the NN pair density, all investigations have used bare operators. We apply the Lee-Suzuki procedure to general one-body operators, investigating the importance of the approximations involved. In particular we concentrate on the limitations of the two-body cluster approximation. C1 Univ Arizona, Dept Phys, Tucson, AZ 85721 USA. Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. RP Stetcu, I (reprint author), Univ Arizona, Dept Phys, POB 210081, Tucson, AZ 85721 USA. EM stetcu@physics.arizona.edu NR 9 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 489 EP 490 DI 10.1140/epjad/i2005-06-074-4 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000137 ER PT J AU Michel, N Nazarewicz, W Ploszajczak, M Rotureau, J AF Michel, N Nazarewicz, W Ploszajczak, M Rotureau, J TI Shell-model description of weakly bound and unbound nuclear states SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA ID CONTINUUM AB A consistent description of weakly bound and unbound nuclei requires an accurate description of the particle continuum properties when carrying out multiconfiguration mixing. This is the domain of the Gamow Shell Model (GSM) which is the multiconfigurational shell model in the complex k-plane formulated using a complete Berggren ensemble representing bound single-particle (s.p.) states, s.p. resonances, and non-resonant complex energy continuum states. We shall discuss the salient features of effective interactions in weakly bound systems and show selected applications of the GSM formalism to p-shell nuclei. Finally, a development of the new non-perturbative scheme based on Density Matrix Renormalization Group methods to select the most significant continuum configurations in GSM calculations will be discussed shortly. C1 Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA. Univ Warsaw, Inst Theoret Phys, PL-00681 Warsaw, Poland. CEA, CNRS, DSM, GANIL,IN2P3, F-14076 Caen, France. RP Michel, N (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. EM michel@ler000.phy.ornl.gov; ploszajczak@ganil.fr RI rotureau, jimmy/B-2365-2013 NR 18 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 493 EP 498 DI 10.1140/epjad/i2005-06-136-7 PG 6 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000138 ER PT J AU Michel, N Nazarewicz, W Ploszajczak, M AF Michel, N Nazarewicz, W Ploszajczak, M TI Effects of the continuum coupling on spin-orbit splitting SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA ID EXPANSIONS; STATES AB Recently, the shell model in the complex k-plane (the so-called Gamow Shell Model) has been formulated using a complex Berggren ensemble representing bound single-particle states, single-particle resonances, and non-resonant continuum states. The single-particle basis used is that of the Hartree-Fock potential generated self-consistently by a finite-range residual interaction. In this framework, we shall discuss the "spin-orbit splitting" of the 3/2(1)(-) and 1/2(1)(-) states in He-7. It is demonstrated that the continuum effects are very important and cannot be taken into account in standard shell-model calculations. C1 Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA. Univ Warsaw, Inst Theoret Phys, PL-00681 Warsaw, Poland. CNRS, CEA, DSM, IN2P3,GANIL, F-14076 Caen, France. RP Michel, N (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. EM michel@mail.phy.ornl.gov NR 17 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 503 EP 504 DI 10.1140/epjad/i2005-06-213-y PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000140 ER PT J AU Papenbrock, T AF Papenbrock, T TI Wave function factorization of shell-model ground states SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pine Mt, GA ID SYSTEMS; NUCLEI AB The wave function factorization method determines an optimal basis of correlated proton and neutron states, and accurately approximates low-lying shell-model states by a rather small number of suitable product states. The optimal basis states result from a variational principle and are the solution of relatively low-dimensional eigenvalue problems. The error involved in this truncation decreases exponentially fast as more basis states are included. C1 Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. RP Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. EM papenbro@mail.phy.ornl.gov OI Papenbrock, Thomas/0000-0001-8733-2849 NR 16 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6001 EI 1434-601X J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 507 EP 508 DI 10.1140/epjad/i2005-06-059-3 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000142 ER PT J AU Stoitcheva, G Nazarewicz, W Dean, DJ AF Stoitcheva, G Nazarewicz, W Dean, DJ TI Shell model analyses of intruder states and high-K isomers in the fp shell SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA AB We perform a systematic shell-model study of collective intruder structures and fully aligned high-spin states in nuclei from the lower-fp shell in the sdfp configuration space. We analyze the intruder structures associated with the 1p-1h cross-shell excitations from the sd shell that have been observed in several nuclei from this region, including Ti-44 and Sc-44. We compare the shell-model calculations to the recent mean-field work (H. Zdunczuk, W. Satula, R.A. Wyss, nucl-th/0408018) and experimental data (M. Lach, J. Styczen, private communication). The high-spin behavior may be understood in terms of the competing cross-shell proton and neutron excitations. The interplay between proton and neutron intruder states is reflected in the angular-momentum dependence of electromagnetic rates. C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Univ Tennessee, Dept Phys, Knoxville, TN 37996 USA. Univ Warsaw, Inst Theoret Phys, PL-00681 Warsaw, Poland. RP Stoitcheva, G (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. EM stoitchevags@ornl.gov NR 6 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 509 EP 510 DI 10.1140/epjad/i2005-06-207-9 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000143 ER PT J AU Gueorguiev, VG Pan, F Draayer, JP AF Gueorguiev, VG Pan, F Draayer, JP TI Application of the extended pairing model to heavy isotopes SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pine Mt, GA ID NUCLEAR AB Relative binding energies (RBEs) within three isotopic chains (Sn100-130, Yb152-181, and Pb181-202) have been studied using the exactly solvable extended pairing model (EPM) (F. Pan, V.G. Gueorguiev, J.P. Draayer, Phys. Rev. Lett. 92; 112503 (2004) (see also these proceedings)). The unique pairing strength G, which reproduces the experimental RBEs, has been determined. Within EPM, log(G) is a smooth function of the model space dimension dim(A), as expected for an effective coupling strength. In particular, for the Pb and Sri isotopes G can be described by a two parameter expression that is inversely proportional to the dimensionality of the model space, G.= alpha dim(A)(-beta) with beta approximate to 1. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA. Liaoning Normal Univ, Dept Phys, Dalian 116029, Peoples R China. RP Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. EM vesselin@phys.lsu.edu RI Gueorguiev, Vesselin/A-9679-2009 OI Gueorguiev, Vesselin/0000-0002-2022-6432 NR 5 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6001 EI 1434-601X J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 515 EP 516 DI 10.1140/epjad/i2005-06-180-y PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000145 ER PT J AU Bender, M Heenen, PH AF Bender, M Heenen, PH TI Microscopic models for exotic nuclei SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA ID MEAN-FIELD DESCRIPTION; WAVE-FUNCTIONS; ISOTOPES AB Starting from successful self-consistent mean-field models, this paper discusses why and how to go beyond the mean-field approximation. To include long-range correlations from fluctuations in collective degrees of freedom, one has to consider symmetry restoration and configuration mixing, which give access to ground-state correlations and spectroscopy. C1 Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. Univ Libre Bruxelles, Serv Phys Nucl Theor, B-1050 Brussels, Belgium. RP Bender, M (reprint author), Argonne Natl Lab, Div Phys, 9700 S Cass Ave, Argonne, IL 60439 USA. EM bender@nscl.msu.edu NR 21 TC 8 Z9 8 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 519 EP 524 DI 10.1140/epjad/i2005-06-011-7 PG 6 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000146 ER PT J AU Terasaki, J Engel, J Bender, M Dobaczewski, J Nazarewicz, W Stoitsov, M AF Terasaki, J Engel, J Bender, M Dobaczewski, J Nazarewicz, W Stoitsov, M TI Skyrme-QRPA calculations multiple strength in exotic nuclei SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA AB We present test calculations of the quasiparticle random-phase approximation with Skyrme and delta-pairing forces. We examine the convergence of solutions in the isoscalar 0(+) channel as we increase the number of single-quasiparticle states, and the separation of spurious states from physical excited states in the isoscalar 1(-) channel. Our calculation is fully self-consistent as it neglects no component of the interaction. We focus on Sn isotopes near the two-neutron drip line. C1 Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA. Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA. Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. Univ Warsaw, Inst Theoret Phys, PL-00681 Warsaw, Poland. Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, BU-1784 Sofia, Bulgaria. RP Terasaki, J (reprint author), Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA. EM jterasa@physics.unc.edu NR 4 TC 0 Z9 0 U1 0 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 539 EP 540 DI 10.1140/epjad/i2005-06-082-4 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000151 ER PT J AU Dobaczewski, J Borycki, PJ Nazarewicz, W Stoitsov, M AF Dobaczewski, J Borycki, PJ Nazarewicz, W Stoitsov, M TI On the non-unitarity of the Bogoliubov transformation due to the quasiparticle space truncation SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA AB We show that due to the energy cutoff in the Hartree-Fock-Bogoliubov quasiparticle space, the Bogoliubov transformation becomes non-unitary. We propose a method of restoring the unitarity by introducing a truncated single-particle Hilbert space, in which the HFB equations are to be solved. C1 Univ Warsaw, Inst Theoret Phys, PL-00681 Warsaw, Poland. Univ Tennessee, Dept Phys, Knoxville, TN 37996 USA. Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Warsaw Univ Technol, Inst Phys, PL-00662 Warsaw, Poland. Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, BU-1784 Sofia, Bulgaria. RP Dobaczewski, J (reprint author), Univ Warsaw, Inst Theoret Phys, Hoza 69, PL-00681 Warsaw, Poland. EM Jacek.Dobaczewski@fuw.edu.pl NR 5 TC 3 Z9 3 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 541 EP 542 DI 10.1140/epjad/i2005-06-151-8 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000152 ER PT J AU Stoitsov, MV Dobaczewski, J Nazarewicz, W Terasaki, J AF Stoitsov, MV Dobaczewski, J Nazarewicz, W Terasaki, J TI Large-scale HFB calculations for deformed nuclei with the exact particle number projection SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA ID BOGOLIUBOV EQUATIONS AB Recent theoretical advances in the large-scale HFBTHO calculations of nuclear ground-state properties are presented with the emphasis on the exact particle number projection. The applicability of the widely used Lipkin-Nogami procedure is discussed together with the analysis of the particle number projection after variation. C1 Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA. Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, BU-1784 Sofia, Bulgaria. Warsaw Univ, Inst Theoret Phys, PL-00681 Warsaw, Poland. Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA. RP Stoitsov, MV (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. EM stoitsovmv@ornl.gov NR 9 TC 4 Z9 4 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 567 EP 568 DI 10.1140/epjad/i2005-06-203-1 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000163 ER PT J AU Oganessian, YT Utyonkov, VK Lobanov, YV Abdullin, FS Polyakov, AN Shirokovsky, IV Tsyganov, YS Gulbekian, GG Bogomolov, SL Gikal, BN Mezentsev, AN Iliev, S Subbotin, VG Sukhov, AM Voinov, AA Buklanov, GV Subotic, K Zagrebaev, VI Itkis, MG Patin, JB Moody, KJ Wild, JF Stoyer, MA Stoyer, NJ Shaughnessy, DA Kenneally, JM Wilk, PA Lougheed, RW AF Oganessian, YT Utyonkov, VK Lobanov, YV Abdullin, FS Polyakov, AN Shirokovsky, IV Tsyganov, YS Gulbekian, GG Bogomolov, SL Gikal, BN Mezentsev, AN Iliev, S Subbotin, VG Sukhov, AM Voinov, AA Buklanov, GV Subotic, K Zagrebaev, VI Itkis, MG Patin, JB Moody, KJ Wild, JF Stoyer, MA Stoyer, NJ Shaughnessy, DA Kenneally, JM Wilk, PA Lougheed, RW TI New elements from Dubna SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA ID SUPERHEAVY NUCLEI; HEAVIEST NUCLEI AB We have studied the dependence of the production cross-sections of the isotopes (282,283)112 and (286-288)114 on the excitation energy of the compound nuclei (286)112 and (290)114. The maximum cross-sections of the xn-evaporation channels for the reaction U-238(Ca-48, xn)(286-x)112 were measured to be: sigma(3n) = 2.5(-1.1)(+1.8) pb and sigma(4n) = 0.6(-0.5)(+1.6) pb; for the reaction Pu-242(Ca-48,xn)(290-x)114: sigma(2n) similar to 0.5 pb, sigma 3n = 3.6(-1.7)(+3.4)pb and sigma(4n) = 4.5(-1.9)(+3.6)pb. In the reaction U-233(Ca-48, (2-4n))(277-279)112 we measured an upper cross-section limit of sigma(xn) <= 0.6 pb. An increase of sigma(ER) in the reactions of actinide targets Ca-48 can be due to the expected increase of the survivability of the excited compound nucleus upon closer approach to the closed neutron shell N = 184. The observed nuclear decay properties of the nuclides with Z = 104-118 are compared with theoretical nuclear mass calculations and the systematic trends of a.-decay properties. As a whole, they give a consistent pattern of decay of the 18 even-Z neutron-rich nuclides with Z = 104-118 and N = 163-177. C1 Joint Inst Nucl Res, Dubna 141980, Russia. Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Oganessian, YT (reprint author), Joint Inst Nucl Res, Dubna 141980, Russia. EM utyonkov@sungns.jinr.ru RI Wilk, Philip/B-5954-2008 NR 33 TC 4 Z9 4 U1 0 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 589 EP 594 DI 10.1140/epjad/i2005-06-134-9 PG 6 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000169 ER PT J AU Stoyer, MA Patin, JB Kenneally, JM Moody, KJ Shaughnessy, DA Stoyer, NJ Wild, JF Wilk, PA Utyonkov, VK Oganessian, YT AF Stoyer, MA Patin, JB Kenneally, JM Moody, KJ Shaughnessy, DA Stoyer, NJ Wild, JF Wilk, PA Utyonkov, VK Oganessian, YT TI Random probability analysis of recent Ca-48 experiments SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA AB A Monte Carlo random probability analysis developed at LLNL for heavy element research was performed for recent experiments aimed at the synthesis of nuclides with Z >= 112 and N >= 170, to estimate the probability that observed decay chains were a result of a random event. Low probabilities (< 10(-4)% for most decay chains) were found. C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. Joint Inst Nucl Res, RU-141980 Dubna, Moscow Reg, Russia. RP Stoyer, MA (reprint author), Lawrence Livermore Natl Lab, POB 5508, Livermore, CA 94550 USA. EM mastoyer@llnl.gov RI Wilk, Philip/B-5954-2008 NR 6 TC 2 Z9 2 U1 2 U2 3 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 595 EP 597 DI 10.1140/epjad/i2005-06-125-x PG 3 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000170 ER PT J AU Greenlees, PT Amzal, N Bastin, JE Bouchez, E Butler, PA Chatillon, A Dorvaux, O Eeckhaudt, S Eskola, K Gall, B Gerl, J Grahn, T Gorgen, A Hammond, NJ Hauschild, K Herzberg, RD Hessberger, FP Humphreys, RD Hurstel, A Jenkins, DG Jones, GD Jones, P Julin, R Juutinen, S Kankaanpaa, H Keenan, A Kettunen, H Khalfallah, F Khoo, TL Korten, W Kuusmiemi, P Le Coz, Y Leino, M Leppanen, AP Muikku, M Nieminen, P Pakarinen, J Rahkila, P Reiter, P Rousseau, M Scholey, C Theisen, C Uusitalo, J Wilson, J Wollersheim, HJ AF Greenlees, PT Amzal, N Bastin, JE Bouchez, E Butler, PA Chatillon, A Dorvaux, O Eeckhaudt, S Eskola, K Gall, B Gerl, J Grahn, T Gorgen, A Hammond, NJ Hauschild, K Herzberg, RD Hessberger, FP Humphreys, RD Hurstel, A Jenkins, DG Jones, GD Jones, P Julin, R Juutinen, S Kankaanpaa, H Keenan, A Kettunen, H Khalfallah, F Khoo, TL Korten, W Kuusmiemi, P Le Coz, Y Leino, M Leppanen, AP Muikku, M Nieminen, P Pakarinen, J Rahkila, P Reiter, P Rousseau, M Scholey, C Theisen, C Uusitalo, J Wilson, J Wollersheim, HJ TI In-beam and decay spectroscopy of transfermium elements SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pine Mt, GA ID FILLED RECOIL SEPARATOR; SUPERHEAVY ELEMENTS; HEAVIEST ELEMENTS; NUCLEAR-STRUCTURE; SHELL STRUCTURE; MEAN-FIELD; NO-254; SPECTROMETER; BANDS AB Over the past few years a great deal of new spectroscopic data has been obtained for transfermium nuclei. Recoil separators, coupled with modern target position and focal-plane spectrometers, allow detailed studies of the structure and decay properties of transfermiurn nuclei to be peformed. In-beam studies using the recoil-gating and recoil-decay, tagging techniques mainly provide information on yrast states, whilst complementary focal-plane decay studies give access to non-yrast and isomeric structures. In-beam studies of nuclei in this region have largely been performed at ANL and JYFL, and decay experiments at GSL, JYFL, GANIL and ANL. The present contribution is focussed on recent developments and experiments carried out by a number of collaborating institutes at JYFL. C1 Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland. Univ Liverpool, Dept Phys, Liverpool L69 7ZE, Merseyside, England. CEA Saclay, DAPNIA, SPhN, F-91191 Gif Sur Yvette, France. IReS, F-67037 Strasbourg, France. Univ Helsinki, Dept Phys Sci, FIN-00014 Helsinki, Finland. GSI Darmstadt, D-64291 Darmstadt, Germany. Argonne Natl Lab, Argonne, IL 60439 USA. Univ Munich, D-85748 Garching, Germany. RP Univ Jyvaskyla, Dept Phys, BP 35, FIN-40014 Jyvaskyla, Finland. EM ptg@phys.jyu.fi RI Gerl, Juergen/A-3255-2011; Hauschild, Karl/A-6726-2009; Pakarinen, Janne/F-6695-2010; Herzberg, Rolf-Dietmar/E-1558-2011; KORTEN, Wolfram/H-3043-2013; Scholey, Catherine/G-2720-2014; THEISEN, Christophe/A-9343-2015; OI Pakarinen, Janne/0000-0001-8944-8757; Scholey, Catherine/0000-0002-8743-6071; THEISEN, Christophe/0000-0002-8509-1022; KORTEN, Wolfram/0000-0002-3940-0816; BASTIN, Beyhan/0000-0001-5959-0875; Hammond, Neil/0000-0001-6390-8874; Gorgen, Andreas/0000-0003-1916-9941; Butler, Peter/0000-0001-6080-9205 NR 30 TC 18 Z9 18 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6001 EI 1434-601X J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 599 EP 604 DI 10.1140/epjad/i2005-06-026-0 PG 6 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000171 ER PT J AU Eeckhaudt, S Amzal, N Bastin, JE Bouchez, E Butler, PA Chatillon, A Eskola, K Gerl, J Grahn, T Gorgen, A Greenlees, PT Herzberg, RD Hessberger, FP Hurstel, A Ikin, PJC Jones, GD Jones, P Julin, R Juutinen, S Kettunen, H Khoo, TL Korten, W Kuusiniemi, P Le Coz, Y Leino, M Leppanen, AP Nieminen, P Pakarinen, J Perkowski, J Pritchard, A Reiters, P Rahkila, P Scholey, C Theisen, C Uusitalo, J Van de Vel, K Wilson, J Wollersheim, HJ AF Eeckhaudt, S Amzal, N Bastin, JE Bouchez, E Butler, PA Chatillon, A Eskola, K Gerl, J Grahn, T Gorgen, A Greenlees, PT Herzberg, RD Hessberger, FP Hurstel, A Ikin, PJC Jones, GD Jones, P Julin, R Juutinen, S Kettunen, H Khoo, TL Korten, W Kuusiniemi, P Le Coz, Y Leino, M Leppanen, AP Nieminen, P Pakarinen, J Perkowski, J Pritchard, A Reiters, P Rahkila, P Scholey, C Theisen, C Uusitalo, J Van de Vel, K Wilson, J Wollersheim, HJ TI In-beam gamma-ray spectroscopy of No-254 SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA ID DECAY AB The recoil-tagging technique has been employed to perform an in-beam gamma-ray spectroscopic study of the transfermium nucleus No-254. The experiment was carried out at the Department of Physics of the University of Jyvaskla and utilised the JUROGAM array of germanium detectors coupled to the gas-filled recoil separator RITU. The ground-state rotational band was extended and evidence for non-yrast states was observed for the first time. C1 Univ Jyvaskyla, Dept Phys, Jyvaskyla, Finland. Univ Liverpool, Oliver Lodge Lab, Liverpool L69 3BX, Merseyside, England. CEA Saclay, SPhN, DAPNIA, Saclay, France. CERN, ISOLDE, Geneva, Switzerland. Univ Helsinki, Dept Phys, Helsinki, Finland. GSI Darmstadt, D-6100 Darmstadt, Germany. Argonne Natl Lab, Argonne, IL 60439 USA. Univ Cologne, IKP, Cologne, Germany. RP Eeckhaudt, S (reprint author), Univ Jyvaskyla, Dept Phys, Jyvaskyla, Finland. EM sarah.eeckhaudt@phys.jyu.fi RI Gerl, Juergen/A-3255-2011; Pakarinen, Janne/F-6695-2010; Herzberg, Rolf-Dietmar/E-1558-2011; KORTEN, Wolfram/H-3043-2013; Scholey, Catherine/G-2720-2014; THEISEN, Christophe/A-9343-2015; OI Pakarinen, Janne/0000-0001-8944-8757; Scholey, Catherine/0000-0002-8743-6071; THEISEN, Christophe/0000-0002-8509-1022; KORTEN, Wolfram/0000-0002-3940-0816; BASTIN, Beyhan/0000-0001-5959-0875; Gorgen, Andreas/0000-0003-1916-9941; Butler, Peter/0000-0001-6080-9205 NR 9 TC 4 Z9 4 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 605 EP 607 DI 10.1140/epjad/i2005-06-015-3 PG 3 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000172 ER PT J AU Clark, JA Barber, RC Blank, B Boudreau, C Buchinger, F Crawford, JE Greene, JP Gulick, S Hardy, JC Hecht, AA Heinz, A Lee, JKP Levand, AF Lundgren, BF Moore, RB Savard, G Scielzo, ND Seweryniak, D Sharma, KS Sprouse, GD Trimble, W Vaz, J Wang, JC Wang, Y Zabransky, BJ Zhou, Z AF Clark, JA Barber, RC Blank, B Boudreau, C Buchinger, F Crawford, JE Greene, JP Gulick, S Hardy, JC Hecht, AA Heinz, A Lee, JKP Levand, AF Lundgren, BF Moore, RB Savard, G Scielzo, ND Seweryniak, D Sharma, KS Sprouse, GD Trimble, W Vaz, J Wang, JC Wang, Y Zabransky, BJ Zhou, Z TI Investigating the rp-process with the Canadian Penning trap mass spectrometer SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pine Mt, GA ID ION; FRAGMENTATION; EXCITATION; ELECTRON; SYSTEM; POINT AB The Canadian Penning trap (CPT) mass spectrometer at the Argonne National Laboratory makes precise mass measurements of nuclides with short half-lives. Since the previous ENAM conference, many significant modifications to the apparatus were implemented to improve both the precision and efficiency of measurement, and now more than 60 radioactive isotopes have been measured with half-lives as short as one second and with a precision (Delta m/m) approaching 10-8. The CPT mass measurement program has concentrated so far on nuclides of importance to astrophysics. In particular, measurements have been obtained of isotopes along the rp-process path, in which energy is released from a series of rapid proton-capture reactions. An X-ray burst is one possible site for the rp-process mechanism which involves the accretion of hydrogen and helium from one star Onto the surface of its neutron star binary companion. Mass measurements are required as key inputs to network calculations used to describe the rp-process in terms of the abundances of the nuclides produced, the light-curve profile of the X-ray bursts, and the energy produced. This paper will present the precise mass measurements made along the rp-process path with particular emphasis on the "waiting-point" nuclideS Se-68 and Ge-64. C1 Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. Univ Manitoba, Dept Phys & Astron, Winnipeg, MB R3T 2N2, Canada. Ctr Etudes Nucl Bordeaux Gradignan, F-33175 Gradignan, France. McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada. Texas A&M Univ, Inst Cyclotron, College Stn, TX 77843 USA. Univ Maryland, Dept Chem, College Pk, MD 20742 USA. SUNY Stony Brook, Dept Phys, Stony Brook, NY 11794 USA. RP Argonne Natl Lab, Div Phys, 9700 S Cass Ave, Argonne, IL 60439 USA. EM jclark@physics.umanitoba.ca RI Sprouse, Gene/C-3397-2009; Crawford, John/A-3771-2012; Heinz, Andreas/E-3191-2014; OI Trimble, William L./0000-0001-7029-2676 NR 35 TC 11 Z9 11 U1 1 U2 4 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6001 EI 1434-601X J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 629 EP 632 DI 10.1140/epjad/i2005-06-172-3 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000178 ER PT J AU Schatz, H Hosmer, PT Aprahamian, A Arndt, O Clement, RRC Estrade, A Kratz, KL Liddick, SN Mantica, PF Mueller, WF Montes, F Morton, AC Ouellette, M Pellegrini, E Pfeiffer, B Reeder, P Santi, P Steiner, M Stolz, A Tomlin, BE Walters, WB Wohr, A AF Schatz, H Hosmer, PT Aprahamian, A Arndt, O Clement, RRC Estrade, A Kratz, KL Liddick, SN Mantica, PF Mueller, WF Montes, F Morton, AC Ouellette, M Pellegrini, E Pfeiffer, B Reeder, P Santi, P Steiner, M Stolz, A Tomlin, BE Walters, WB Wohr, A TI The half-life of the doubly-magic r-process nucleus Ni-78 SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA ID NEUTRON-STAR MERGERS; METAL-POOR; NUCLEOSYNTHESIS; COLLAPSE; DECAY; SUPERNOVAE; MATTER; AGE AB Despite a lot of experimental and theoretical progress the question of the r-process site and the origin of the heavy elements in nature remains one of the biggest open questions in nuclear astrophysics. We report first results from experiments with rare isotope beams of r-process nuclei at Michigan State University's National Superconducting Cyclotron Laboratory. This includes a first measurement of the half-life of the doubly-magic waiting point nucleus Ni-78, which serves as a major bottle-neck for the synthesis of heavy elements in many r-process models. C1 Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA. Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA. Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. Univ Mainz, Inst Kernchem, D-55128 Mainz, Germany. Michigan State Univ, Dept Chem, E Lansing, MI 48824 USA. Pacific NW Natl Lab, Richland, WA 99352 USA. Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA. RP Schatz, H (reprint author), Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA. EM schatz@nscl.msu.edu RI Morton, Colin/K-1561-2015 OI Morton, Colin/0000-0003-0214-7551 NR 31 TC 2 Z9 2 U1 1 U2 2 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 639 EP 642 DI 10.1140/epjad/i2005-06-069-1 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000180 ER PT J AU Bardayan, DW Blackmon, JC del Campo, JG Kozub, RL Liang, JF Ma, Z Shapira, D Sahin, L Smith, MS AF Bardayan, DW Blackmon, JC del Campo, JG Kozub, RL Liang, JF Ma, Z Shapira, D Sahin, L Smith, MS TI New Ne-19 resonance observed using an exotic F-18 beam SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pine Mt, GA ID REACTION-RATES; ENERGY-LEVELS; SCATTERING; NOVAE AB The rates of the F-18(p, alpha)O-15 and F-18(p, gamma) Ne-19 reactions in astrophysical environments depend on the properties of Ne-19 levels above the F-18 + p threshold. There are at least 8 levels in the mirror nucleus F-19 for which analogs have not been observed in Ne-19 in the excitation energy range E-x = 6.4-7.6 MeV. We have made a search for these levels by measuring the H-1(F-18, p)F-18 excitation function over the energy range Ec.m. = 0.3-1.3 MeV. We have identified and measured the properties of a newly observed level at E, = 7.420 +/- 0.014 MeV, which is most likely the mirror to the J(pi) = 7/2(+) F-19 level at 7.56 MeV. This new level is found to increase the calculated F-18(p,alpha)O-15 reaction rate by 16%, 63%, and 106% at T = 1,2, and 3 GK, respectively. C1 Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. Tennessee Technol Univ, Dept Phys, Cookeville, TN 38505 USA. Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA. Dumlupinar Univ, Dept Phys, TR-43100 Kutahya, Turkey. RP Oak Ridge Natl Lab, Div Phys, POB 2008, Oak Ridge, TN 37831 USA. EM bardayan@mail.phy.ornl.gov NR 13 TC 0 Z9 0 U1 0 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6001 EI 1434-601X J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 643 EP 644 DI 10.1140/epjad/i2005-06-007-3 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000181 ER PT J AU Savard, G AF Savard, G TI Ion manipulation with cooled and bunched beams SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pine Mt, GA ID TRAP; ENERGY AB Ion beam properties are often critical to experiments with rare isotopes. The ability to cool transverse motion and energy spread in a beam or modify its time structure can significantly improve many types of experiments. This ability is now a common feature in existing low-energy facilities and will play a central role in a number of next generation radioactive beam facilities. The basic physics underpinning the operation of these beam cooling devices is introduced below together with the key technical evolutions that have occurred since the previous ENAM conference. Examples of operating devices for various sources of radioactive ions are given, together with the performance presently achieved and improvements expected in the near future. C1 Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. Univ Chicago, Dept Phys, Chicago, IL 60637 USA. RP Argonne Natl Lab, Div Phys, 9700 S Cass Ave, Argonne, IL 60439 USA. EM savard@anl.gov NR 10 TC 3 Z9 3 U1 0 U2 2 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6001 EI 1434-601X J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 713 EP 718 DI 10.1140/epjad/i2005-06-206-x PG 6 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000198 ER PT J AU Koster, U Arndt, O Bergmann, UC Catherall, R Cederkall, J Dillmann, I Dubois, M Durantel, F Fraile, L Franchoo, S Gaubert, G Gaudefroy, L Hallmann, O Huet-Equilbec, C Jacquot, B Jardin, P Kratz, KL Lecesne, N Leroy, R Lopez, A Maunoury, L Pacquet, JY Pfeiffer, B Saint-Laurent, MG Stodel, C Villari, ACC Weissman, L AF Koster, U Arndt, O Bergmann, UC Catherall, R Cederkall, J Dillmann, I Dubois, M Durantel, F Fraile, L Franchoo, S Gaubert, G Gaudefroy, L Hallmann, O Huet-Equilbec, C Jacquot, B Jardin, P Kratz, KL Lecesne, N Leroy, R Lopez, A Maunoury, L Pacquet, JY Pfeiffer, B Saint-Laurent, MG Stodel, C Villari, ACC Weissman, L TI ISOL beams of neutron-rich oxygen isotopes SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pine Mt, GA ID ELECTRON-IMPACT IONIZATION; PARTIAL CROSS-SECTIONS; THRESHOLD AB ISOL beams of O19-22 were produced at ISOLDE and GANIL. At ISOLDE the neutron-rich oxygen isotopes are produced by 1.4 GeV proton-induced reactions in a UCx/graphite target. The target is connected via a water-cooled transfer line (to retain all non-volatile isobars) to an ISOLDE type FEBIAD ion source where the released CO is dominantly ionized as CO+. O19-22 beams were also produced at SPIRAL (GANIL). A 77.5 MeV/nucleon S-36 beam was fragmented in a thick graphite target, coupled by a cold transfer tube to an ECR ion source which ionizes the released GO dominantly as O+ and CO+. C1 CERN, ISOLDE, CH-1211 Geneva, Switzerland. Johannes Gutenberg Univ Mainz, Inst Kernchem, D-55128 Mainz, Germany. CEA, DSM, CNRS, IN2P3,GANIL, F-14076 Caen, France. Inst Phys Nucl, F-91406 Orsay, France. Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. Michigan State Univ, NSCL, E Lansing, MI 48824 USA. RP CERN, ISOLDE, CH-1211 Geneva, Switzerland. EM Ulli.Koster@cern.ch; Luis.Fraile@cern.ch; kl.kratz@uni-mainz.de; villari@ganil.fr RI Fraile, Luis/B-8668-2011 OI Fraile, Luis/0000-0002-6281-3635 NR 13 TC 2 Z9 2 U1 0 U2 3 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6001 EI 1434-601X J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 729 EP 731 DI 10.1140/epjad/i2005-06-199-4 PG 3 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000201 ER PT J AU Perajarvi, K Cerny, J Hager, U Hakala, J Huikari, J Jokinen, A Karvonen, P Kurpeta, J Lee, D Moore, I Penttila, H Popov, A Aysto, J AF Perajarvi, K Cerny, J Hager, U Hakala, J Huikari, J Jokinen, A Karvonen, P Kurpeta, J Lee, D Moore, I Penttila, H Popov, A Aysto, J TI Production of beams of neutron-rich nuclei between Ca and Ni using the ion-guide technique SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 4th International Conference on Exotic Nuclei and Atomic Masses CY SEP 12-16, 2004 CL Pint Mt, GA ID ISOTOPES; DECAY; MANGANESE; NICKEL; COBALT AB It was shown for the first time that quasi- and deep-inelastic reactions can be successfully incorporated into the conventional Ion-Guide Isotope Separator On-Line (IGISOL) technique. Yields of radioactive projectile-like species such as Co-62,Co-63 are about 0.8 ions/s/pnA corresponding to a total IGISOL efficiency of about 0.06%. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. Univ Jyvaskyla, Dept Phys, FIN-40014 Jyvaskyla, Finland. Univ Warsaw, PL-00681 Warsaw, Poland. St Petersburg Nucl Phys Inst, Gatchina 188350, Russia. RP Perajarvi, K (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. EM KPerajarvi@lbl.gov; ari.s.jokinen@phys.jyu.fi; heikki.penttila@phys.jyu.fi; juha.aysto@phys.jyu.fi RI Penttila, Heikki/A-4420-2013; Moore, Iain/D-7255-2014; Hager, Ulrike/O-1738-2016; Jokinen, Ari/C-2477-2017; OI Moore, Iain/0000-0003-0934-8727; Jokinen, Ari/0000-0002-0451-125X; Lee, Dongwon/0000-0003-3133-5199 NR 9 TC 0 Z9 0 U1 1 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 25 SU 1 BP 749 EP 750 DI 10.1140/epjad/i2005-06-060-x PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DX UT WOS:000233934000207 ER PT J AU de Jager, K AF de Jager, K TI Electromagnetic form factors of the nucleon SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 2nd Workshop on From Parity Violation to Hadronic Structure and More CY JUN 08-11, 2004 CL Lab Phys Subatom & Cosmol, Grenoble, FRANCE HO Lab Phys Subatom & Cosmol ID DISPERSION-THEORETICAL ANALYSIS; CONSTITUENT-QUARK-MODEL; POLARIZATION TRANSFER; ELECTRON-SCATTERING AB The experimental and theoretical status of elastic electron scattering from the nucleon is reviewed. As a consequence of new experimental facilities and new theoretical insights, this subject is advancing with unprecedented precision. C1 Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. RP de Jager, K (reprint author), Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. EM kees@jlab.org NR 44 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 24 SU 2 BP 17 EP 21 DI 10.1140/epjad/s2005-04-003-5 PG 5 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DW UT WOS:000233933900004 ER PT J AU Pasquini, B Vanderhaeghen, M AF Pasquini, B Vanderhaeghen, M TI Single spin asymmetries in elastic electron-nucleon scattering SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 2nd Workshop on From Parity Violation to Hadronic Structure and More CY JUN 08-11, 2004 CL Lab Phys Subatom & Cosmol, Grenoble, FRANCE HO Lab Phys Subatom & Cosmol ID PROTON SCATTERING AB We discuss the target and beam normal spin asymmetries in elastic electron-nucleon scattering which depend on the imaginary part of two-photon exchange processes between electron and nucleon. In particular, we estimate these transverse spin asymmetries for beam energies below 2 GeV, where the two-photon exchange process is dominated by the resonance contribution to the doubly virtual Compton scattering tensor of the nucleon. C1 Univ Pavia, Dipartimento Fis Nucl & Teor, I-27100 Pavia, Italy. Ist Nazl Fis Nucl, Sez Pavia, I-27100 Pavia, Italy. ECT, Trento, Italy. Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. Coll William & Mary, Dept Phys, Williamsburg, VA 23187 USA. RP Pasquini, B (reprint author), Univ Pavia, Dipartimento Fis Nucl & Teor, I-27100 Pavia, Italy. EM pasquini@pv.infn.it OI Pasquini, Barbara/0000-0001-8433-5649 NR 13 TC 4 Z9 4 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 24 SU 2 BP 29 EP 32 DI 10.1140/epjad/s2005-04-005-3 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DW UT WOS:000233933900006 ER PT J AU Gorchtein, M Guichon, PAM Vanderhaeghen, M AF Gorchtein, M Guichon, PAM Vanderhaeghen, M TI Transverse single spin asymmetry in elastic electron-proton scattering SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT Workshop on From Parity Violation to Hadronic Structure and More CY JUN 08-11, 2004 CL Lab Phys Subatom & Cosmol, Grenoble, FRANCE HO Lab Phys Subatom & Cosmol AB We discuss the two-photon exchange contribution to observables which involve lepton helicity flip in elastic lepton-nucleon scattering. This contribution is accessed through the single spin asymmetry for a lepton beam polarized normal to the scattering plane. We estimate this beam normal spin asymmetry at large momentum transfer using a parton model and we express the corresponding amplitude in terms of generalized parton distributions. C1 Univ Genoa, I-16146 Genoa, Italy. Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy. CEA Saclay, SPhN, DAPNIA, F-91191 Gif Sur Yvette, France. Coll William & Mary, Newport News, VA 23606 USA. Jefferson Lab, Newport News, VA 23606 USA. RP Gorchtein, M (reprint author), Univ Genoa, I-16146 Genoa, Italy. EM pguichon@cea.fr NR 16 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 24 SU 2 BP 33 EP 34 DI 10.1140/epjad/s2005-04-006-2 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DW UT WOS:000233933900007 ER PT J AU King, PM AF King, PM CA G0 Collaborat TI Normal beam spin asymmetries during the G(0) forward angle measurement SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 2nd Workshop on From Parity Violation to Hadronic Structure and More CY JUN 08-11, 2004 CL Lab Phys Subatom & Cosmol, Grenoble, FRANCE HO Lab Phys Subatom & Cosmol AB The vector analyzing power measured in elastic scattering of transversely polarized electrons from an unpolarized nucleon is directly proportional to the imaginary part of the two photon exchange amplitude. There has been recent interest in explorations of the two photon exchange amplitude, as the real part has been proposed as a possible resolution of the discrepancy between Rosenbluth separation and polarization observable measurements of the ratio of the electric to magnetic proton form factor. The vector analyzing power appears in the experiment as an azimuthal asymmetry. It has been measured previously in the SAMPLE and A4 experiment with different kinematics than those achievable with the G(0) apparatus. As part of the systematic checks for the G(0) forward angle measurement at TJNAF, the normal beam spin asymmetry in the G(0) detector array was measured with a 3 GeV beam incident upon a liquid hydrogen target. The experimental configuration was identical to the standard G(0) forward angle running, except that the beam was transversely polarized in the plane of the accelerator. The data collected cover a range in center of mass angle from 19 degrees to 37 degrees, with an eight-fold azimuthal symmetry. About 30 hours of data were taken in this configuration, resulting in an extracted vector analyzing power with a precision of a few ppm, which may already be able to provide some constraint on model predictions. C1 Univ Illinois, Urbana, IL 61801 USA. Jefferson Lab, Newport News, VA USA. RP King, PM (reprint author), Univ Illinois, Urbana, IL 61801 USA. EM pking@jlab.org OI King, Paul/0000-0002-3448-2306 NR 2 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 24 SU 2 BP 39 EP 40 DI 10.1140/epjad/s2005-04-008-0 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DW UT WOS:000233933900009 ER PT J AU Leinweber, DB Boinepalli, S Thomas, AW Williams, AG Young, RD Zhang, JB Zanotti, JM AF Leinweber, DB Boinepalli, S Thomas, AW Williams, AG Young, RD Zhang, JB Zanotti, JM TI Systematic uncertainties in the precise determination of the strangeness magnetic moment of the nucleon SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT Workshop on From Parity Violation to Hadronic Structure and More CY JUN 08-11, 2004 CL Lab Phys Subatom & Cosmol, Grenoble, FRANCE HO Lab Phys Subatom & Cosmol AB Systematic uncertainties in the recent precise determination of the strangeness magnetic moment of the nucleon are identified and quantified. In summary, G(M)(s) = -0.046 +/- 0.019 mu(N). C1 Univ Adelaide, Special Res Ctr Subatom Struct Matter, Adelaide, SA 5005, Australia. Univ Adelaide, Dept Phys, Adelaide, SA 5005, Australia. Jefferson Lab, Newport News, VA 23606 USA. DESY, NIC, John Neumann Inst Comp, D-15783 Zeuthen, Germany. RP Leinweber, DB (reprint author), Univ Adelaide, Special Res Ctr Subatom Struct Matter, Adelaide, SA 5005, Australia. EM dleinweb@physics.adelaide.edu.au RI Thomas, Anthony/G-4194-2012; Zanotti, James/H-8128-2012; Young, Ross/H-8207-2012; Leinweber, Derek/J-6705-2013 OI Thomas, Anthony/0000-0003-0026-499X; Zanotti, James/0000-0002-3936-1597; Williams, Anthony/0000-0002-1472-1592; Leinweber, Derek/0000-0002-4745-6027 NR 14 TC 19 Z9 19 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 24 SU 2 BP 79 EP 84 DI 10.1140/epjad/s2005-04-017-y PG 6 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DW UT WOS:000233933900018 ER PT J AU Chudakov, E Luppov, V AF Chudakov, E Luppov, V TI Moller polarimetry with atomic hydrogen targets SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT 2nd Workshop on From Parity Violation to Hadronic Structure and More CY JUN 08-11, 2004 CL Lab Phys Subatom & Cosmol, Grenoble, FRANCE HO Lab Phys Subatom & Cosmol ID BEAM POLARIZATION MEASUREMENTS AB A novel proposal of using polarized atomic hydrogen gas, stored in an ultra-cold magnetic trap, as the target for electron beam polarimetry based on Moller scattering is discussed. Such a target of practically 100% polarized electrons could provide a superb systematic accuracy of about 0.5% for beam polarization measurements. Feasibility studies for the CEBAF electron beam have been performed. C1 Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. Univ Michigan, Spin Phys Ctr, Ann Arbor, MI 48109 USA. RP Chudakov, E (reprint author), Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. NR 13 TC 3 Z9 3 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 24 SU 2 BP 123 EP 126 DI 10.1140/epjad/s2005-04-028-8 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DW UT WOS:000233933900029 ER PT J AU Smith, GR Armstrong, D Averett, T Birchall, J Botto, T Bowman, JD Bruell, A Carlini, R Chattopadhyay, S Davis, C Doornbos, J Dow, K Dunne, J Ent, R Erler, J Falk, W Farkhondeh, M Finn, JM Forest, T Franklin, W Gaskell, D Grimm, K Hersman, FW Holtrop, M Johnston, K Jones, R Joo, K Kowalski, S Keppel, C Kohl, M Korkmaz, E Lee, L Liang, Y Lung, A Mack, D Majewski, S Mammei, J Mammei, R Meekins, D Mitchell, G Mkrtchyan, H Morgan, N Opper, A Page, S Pentillo, S Pitt, M Poelker, M Porcelli, T Ramsay, WD Ramsey-Musolf, M Roche, J Simicevic, N Smith, T Suleiman, R Taylor, S Tsentalovich, E VanOers, WTH Wells, S Wilburn, WS Wood, S Zhu, H Zorn, C AF Smith, GR Armstrong, D Averett, T Birchall, J Botto, T Bowman, JD Bruell, A Carlini, R Chattopadhyay, S Davis, C Doornbos, J Dow, K Dunne, J Ent, R Erler, J Falk, W Farkhondeh, M Finn, JM Forest, T Franklin, W Gaskell, D Grimm, K Hersman, FW Holtrop, M Johnston, K Jones, R Joo, K Kowalski, S Keppel, C Kohl, M Korkmaz, E Lee, L Liang, Y Lung, A Mack, D Majewski, S Mammei, J Mammei, R Meekins, D Mitchell, G Mkrtchyan, H Morgan, N Opper, A Page, S Pentillo, S Pitt, M Poelker, M Porcelli, T Ramsay, WD Ramsey-Musolf, M Roche, J Simicevic, N Smith, T Suleiman, R Taylor, S Tsentalovich, E VanOers, WTH Wells, S Wilburn, WS Wood, S Zhu, H Zorn, C CA Qweak Collaboration TI Qweak: A precision measurement of the proton's weak charge SO EUROPEAN PHYSICAL JOURNAL A LA English DT Article; Proceedings Paper CT Workshop on From Parity Violation to Hadronic Structure and More CY JUN 08-11, 2004 CL Lab Phys Subatom & Cosmol, Grenoble, FRANCE HO Lab Phys Subatom & Cosmol ID PARITY NONCONSERVATION; ATOMIC THALLIUM AB The Q(weak) experiment at Jefferson Lab will measure the parity-violating asymmetry in e-p elastic scattering at very low Q(2) using a longitudinally polarized electron beam and a liquid hydrogen target. The experiment will provide the first measure of the weak charge of the proton, Q(omega), to an accuracy of 4%. Q(omega) is simply related to the weak mixing angle theta(omega), providing a precision test of the Standard Model. Since the value of sin 20 is approximately 1/4, the weak charge of the proton Q(omega)(P) = 1 - 4 sin(2) theta(omega) is suppressed in the Standard Model, making it especially sensitive to the value of the mixing angle and also to possible new physics. The experiment employs an 85% polarized, 180 mu A, 1.2 GeV electron beam, a 35 cm liquid hydrogen target; and a toroidal magnet to focus electrons scattered at 8 degrees +/- 2 degrees, corresponding to Q(2) similar to 0.03 (GeV/c)(2). With these kinematics the systematic uncertainties from hadronic processes are strongly suppressed. To obtain the necessary statistics this 2200 hours experiment must run at an event rate of over 6 GHz. This requires current (integrating) mode detection of the scattered electrons, which 1 will be achieved using synthetic quartz Cherenkov detectors. A tracking system will be used in a low-rate counting mode to determine the average Q2 and the dilution factor of background events. The theoretical context of the experiment and the status of its design are discussed. C1 Jefferson Lab, Newport News, VA 23606 USA. RP Smith, GR (reprint author), Jefferson Lab, Newport News, VA 23606 USA. RI Averett, Todd/A-2969-2011; OI Jones, Richard/0000-0002-1410-6012 NR 12 TC 3 Z9 3 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013 USA SN 1434-6001 J9 EUR PHYS J A JI Eur. Phys. J. A PY 2005 VL 24 SU 2 BP 155 EP 158 DI 10.1140/epjad/s2005-04-039-5 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 993DW UT WOS:000233933900040 ER PT J AU Yochelis, A Elphick, C Hagberg, A Meron, E AF Yochelis, A Elphick, C Hagberg, A Meron, E TI Frequency locking in extended systems: The impact of a Turing mode SO EUROPHYSICS LETTERS LA English DT Article ID SPATIOTEMPORAL DYNAMICS; PATTERN-FORMATION; DEVILS-STAIRCASE; BIFURCATIONS; EQUATIONS; POINT AB A Turing mode in an extended periodically forced oscillatory system can change the classical resonance boundaries of a single forced oscillator. Using the normal form equation for forced oscillations, we identify a Hopf-Turing bifurcation point around which we perform a weak nonlinear analysis. We show that resonant standing waves can exist outside the 2 : 1 resonance region of uniform oscillations, and non-resonant mixed-mode oscillations may prevail inside the resonance region. C1 Technion Israel Inst Technol, Dept Chem Engn, IL-32000 Haifa, Israel. Ctr Fis No Lineal & Sistemas Complejos Santiago, Santiago, Chile. Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. Ben Gurion Univ Negev, Dept Phys, IL-84105 Beer Sheva, Israel. Ben Gurion Univ Negev, BIDR, Dept Solar Energy & Environm Phys, IL-84990 Sede Boqer, Israel. RP Technion Israel Inst Technol, Dept Chem Engn, IL-32000 Haifa, Israel. RI MERON, EHUD/F-1810-2012; Yochelis, Arik/C-6782-2013 OI Yochelis, Arik/0000-0002-1516-0766 NR 26 TC 14 Z9 14 U1 0 U2 2 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0295-5075 J9 EUROPHYS LETT JI Europhys. Lett. PD JAN PY 2005 VL 69 IS 2 BP 170 EP 176 DI 10.1209/epl/i2004-10327-x PG 7 WC Physics, Multidisciplinary SC Physics GA 897WE UT WOS:000227035700004 ER PT J AU Simons, DA Amico, P Baade, D Barden, S Campbell, R Finger, G Gilmore, K Gredel, R Hickson, P Howell, S Hubin, N Kaufer, A Kohley, R Macqueen, P Markelov, S Merrill, M Miyazaki, S Nakaya, H O'Donoghue, D Oliva, T Richich, A Salmon, D Schmidt, R Su, HJ Tulloch, S Luisa, M Vargas, G Wagner, RM Wiecha, O Ye, B AF Simons, Douglas A. Amico, Paola Baade, Dietrich Barden, Sam Campbell, Randall Finger, Gert Gilmore, Kirk Gredel, Roland Hickson, Paul Howell, Steve Hubin, Norbert Kaufer, Andreas Kohley, Ralf MacQueen, Philip Markelov, Sergej Merrill, Mike Miyazaki, Satoshi Nakaya, Hidehiko O'Donoghue, Darragh Oliva, Tino Richich, Andrea Salmon, Derrick Schmidt, Ricardo Su, Hongjun Tulloch, Simon Luisa, Maria Vargas, Garcia Wagner, R. Mark Wiecha, Olivier Ye, Binxun TI Instruments, detectors and the future of astronomy with large ground based telescopes SO EXPERIMENTAL ASTRONOMY LA English DT Article; Proceedings Paper CT 6th Scientific Detectors for Astronony Workshop 2005 CY JUN 19-25, 2005 CL Taormina, ITALY DE cost; dark energy; dark matter; future science; galactic center; market share; survey ID GALACTIC-CENTER; BLACK-HOLE; MAPS AB Results of a survey of instrumentation and detector systems, either currently deployed or planned for use at telescopes larger than 3.5 m, in ground based observatories world-wide, are presented. This survey revealed a number of instrumentation design trends at optical, near, and mid-infrared wavelengths. Some of the most prominent trends include the development of vastly larger optical detector systems (>10(9) pixels) than anything built to date, and the frequent use of mosaics of near-infrared detectors - something that was quite rare only a decade ago in astronomy. Some future science applications for detectors are then explored, in an attempt to build a bridge between current detectors and what will be needed to support the research ambitions of astronomers in the future. C1 Gemini Observ, La Serena, Chile. WM Keck Observ, Kamuela, HI USA. European So Observ, D-8046 Garching, Germany. Anglo Australian Observ, Epping, NSW 2121, Australia. Stanford SLAC, Stanford, CA USA. Calar Alto Observ, Almeria, Spain. Univ British Columbia, Vancouver, BC V5Z 1M9, Canada. Natl Opt Astron Observ, Tucson, AZ 85726 USA. Univ Texas, Austin, TX 78712 USA. Russian Acad Sci, Moscow 117901, Russia. Subaru Telescope, Hilo, HI USA. S African Astron Observ, ZA-7935 Cape Town, South Africa. INAF Telescopio Nazl Galileo, Santa Cruz De La Palma, Spain. Canada France Hawaii Telescope, Kamuela, HI USA. Inst Astrofis Canarias, ISAAC Newton Grp, Sant Cruz Palma, Spain. Large Binocular Telescope Observ, Tucson, AZ USA. Lowell Observ, Flagstaff, AZ 86001 USA. WIYN Observ, Tucson, AZ USA. RP Simons, DA (reprint author), Gemini Observ, La Serena, Chile. OI Oliva, Ernesto/0000-0002-9123-0412 NR 6 TC 1 Z9 1 U1 1 U2 2 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0922-6435 J9 EXP ASTRON JI Exp. Astron. PY 2005 VL 19 IS 1-3 BP 15 EP 44 DI 10.1007/s10686-005-9009-y PG 30 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 073RY UT WOS:000239761500003 ER PT J AU Bailey, DH Jeyabalan, K Li, XS AF Bailey, DH Jeyabalan, K Li, XS TI A comparison of three high-precision quadrature schemes SO EXPERIMENTAL MATHEMATICS LA English DT Article DE numerical quadrature; numerical integration; arbitrary precision AB The authors have implemented three numerical quadrature schemes, using the Arbitrary Precision (ARPREC) software package. The objective here is a quadrature facility that can efficiently evaluate to very high precision a large class of integrals typical of those encountered in experimental mathematics, relying on a minimum of a priori information regarding the function to be integrated. Such a facility is useful, for example, to permit the experimental identification of definite integrals based on their numerical values. The performance and accuracy of these three quadrature schemes are compared using a suite of 15 integrals, ranging from continuous, well-behaved functions on finite intervals to functions with infinite derivatives and blow-up singularities at endpoints, as well as several integrals on an infinite interval. In results using 412-digit arithmetic, we achieve at least 400-digit accuracy, using two of the programs, for all problems except one highly oscillatory function on an infinite interval. Similar results were obtained using 1,012-digit arithmetic. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Cornell Univ, Ithaca, NY 14853 USA. RP Bailey, DH (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. EM dhbailey@lbl.gov; kj44@cornell.edu; xsli@lbl.gov NR 16 TC 42 Z9 42 U1 0 U2 1 PU A K PETERS LTD PI WELLESLEY PA 888 WORCESTER STREET, STE 230, WELLESLEY, MA 02482-3748 USA SN 1058-6458 J9 EXP MATH JI Exp. Math. PY 2005 VL 14 IS 3 BP 317 EP 329 DI 10.1080/10586458.2005.10128931 PG 13 WC Mathematics SC Mathematics GA 978IV UT WOS:000232867700007 ER PT J AU Stutz Ravishankara Pyle Tuck Evans Herrmann Chipperfield Zellner Roscoe, H Shallcross Cox Bloss Monks Stevenson Arnold Heard Remedios Wayne Cohen Brauers Orr-Ewing Blitz Wang Duxbury Dibble Taatjes Eisfeld Seakins Kovacs Dobe Farkas Ingham Rowley Kolb Stephenson Donahue Hynes Smith, IWM Self Donaldson AF Stutz Ravishankara Pyle Tuck Evans Herrmann Chipperfield Zellner Roscoe, H Shallcross Cox Bloss Monks Stevenson Arnold Heard Remedios Wayne Cohen Brauers Orr-Ewing Blitz Wang Duxbury Dibble Taatjes Eisfeld Seakins Kovacs Dobe Farkas Ingham Rowley Kolb Stephenson Donahue Hynes Smith, IWM Self Donaldson TI Kinetic and mechanistic studies of the recombination of OH with NO2: Vibrational deactivation, isotopic scrambling and product isomer branching ratios - General discussion SO FARADAY DISCUSSIONS LA English DT Editorial Material ID GAMMA-ALUMINA SURFACES; SELF-REACTION; OZONE LOSS; PRESSURE-DEPENDENCE; CHLORINE PEROXIDE; CLO DIMER; TEMPERATURE; O-2; RADICALS; N-2 C1 NOAA, Aeron Lab, Boulder, CO 80303 USA. Univ Cambridge, Cambridge CB2 1TN, England. Univ Leeds, Leeds LS2 9JT, W Yorkshire, England. Leibniz Inst Tropospharenforsch, Leipzig, Germany. Univ Duisburg Essen, Essen, Germany. British Antarctic Survey, Cambridge CB3 0ET, England. Univ Bristol, Bristol BS8 1TH, Avon, England. Univ Leicester, Leicester LE1 7RH, Leics, England. Univ Edinburgh, Edinburgh EH8 9YL, Midlothian, Scotland. Univ Oxford, Oxford OX1 2JD, England. Forschungszentrum Julich, Julich, Germany. Univ Strathclyde, Glasgow G1 1XQ, Lanark, Scotland. SUNY Coll Environm Sci & Forestry, Syracuse, NY 13210 USA. Sandia Natl Labs, Livermore, CA 94550 USA. Univ Munich, D-80539 Munich, Germany. Chem Res Ctr, Budapest, Hungary. UCL, London WC1E 6BT, England. Aerodyne Res Inc, Billerica, MA 01821 USA. Swarthmore Coll, Swarthmore, PA 19081 USA. Univ Miami, Coral Gables, FL 33124 USA. Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. Univ Birmingham, Birmingham B15 2TT, W Midlands, England. Univ Toronto, Toronto, ON, Canada. NR 58 TC 0 Z9 0 U1 1 U2 10 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1359-6640 EI 1364-5498 J9 FARADAY DISCUSS JI Faraday Discuss. PY 2005 VL 130 BP 125 EP 151 DI 10.1039/b507787g PG 27 WC Chemistry, Physical SC Chemistry GA 963KV UT WOS:000231804100008 ER PT J AU Monks Plane Platt Stutz Kolb Burrows Remedios Jones Sarkar Shallcross Heard Stevenson Duxbury Tuck Ashfold Herrmann Smith, IWM Taatjes George Ravishankara Baltensperger Brauers Ammann Donahue Cox King Glowacki Donaldson Abbatt Cohen Karcher Coe Zellner Donaldson McFiggans Eisfeld AF Monks Plane Platt Stutz Kolb Burrows Remedios Jones Sarkar Shallcross Heard Stevenson Duxbury Tuck Ashfold Herrmann Smith, IWM Taatjes George Ravishankara Baltensperger Brauers Ammann Donahue Cox King Glowacki Donaldson Abbatt Cohen Karcher Coe Zellner Donaldson McFiggans Eisfeld TI General discussion SO FARADAY DISCUSSIONS LA English DT Editorial Material ID ATMOSPHERIC SURFACE-LAYER; DENSITY-FUNCTION DERIVATION; BOUNDARY-LAYER; AEROSOL-PARTICLES; NITROGEN-DIOXIDE; FLUX PROFILES; FOG DROPLETS; ACETIC-ACID; TRACE GAS; MODEL C1 Univ E Anglia, Norwich NR4 7TJ, Norfolk, England. Heidelberg Univ, D-6900 Heidelberg, Germany. Aerodyne Res Inc, Billerica, MA 01821 USA. Univ Bremen, D-2800 Bremen, Germany. Univ Leicester, Dept Phys Astron, Leicester LE1 7RH, Leics, England. Univ Cambridge, Cambridge CB2 1TN, England. Jadavpur Univ, Kolkata 700032, W Bengal, India. Univ Bristol, Bristol BS8 1TH, Avon, England. Univ Leeds, Leeds LS2 9JT, W Yorkshire, England. Univ Edinburgh, Edinburgh EH8 9YL, Midlothian, Scotland. Univ Strathclyde, Glasgow G1 1XQ, Lanark, Scotland. NOAA, Aeron Lab, Boulder, CO 80303 USA. Leibniz Inst Tropospharenforsch, Leipzig, Germany. Univ Birmingham, Birmingham B15 2TT, W Midlands, England. Sandia Natl Labs, Livermore, CA 94550 USA. Univ Lyon 1, F-69622 Villeurbanne, France. Paul Scherrer Inst, CH-8048 Zurich, Switzerland. Forschungszentrum Julich, Julich, Germany. Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. Univ London, Royal Holloway, London WC1E 7HU, England. Univ Toronto, Toronto, ON, Canada. Inst Atmospher Phys, Oberpfaffenhofen, Germany. Univ Manchester, Manchester M13 9PL, Lancs, England. Univ Duisburg Essen, Essen, Germany. Univ Munich, D-80539 Munich, Germany. NR 76 TC 0 Z9 0 U1 0 U2 4 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1359-6640 EI 1364-5498 J9 FARADAY DISCUSS JI Faraday Discuss. PY 2005 VL 130 BP 241 EP 264 DI 10.1039/b507789n PG 24 WC Chemistry, Physical SC Chemistry GA 963KV UT WOS:000231804100015 ER PT J AU Laskin, A Iedema, MJ Ichkovich, A Graber, ER Taraniuk, I Rudich, Y AF Laskin, A Iedema, MJ Ichkovich, A Graber, ER Taraniuk, I Rudich, Y TI Direct observation of completely processed calcium carbonate dust particles SO FARADAY DISCUSSIONS LA English DT Article ID SEA-SALT PARTICLES; MARINE BOUNDARY-LAYER; X-RAY-MICROANALYSIS; CLOUD CONDENSATION NUCLEI; GASEOUS NITRIC-ACID; MINERAL DUST; AEROSOL-PARTICLES; SAHARAN DUST; HETEROGENEOUS CHEMISTRY; ATMOSPHERIC PARTICLES AB This study presents, for the first time, field evidence of complete, irreversible processing of solid calcium carbonate (calcite)-containing particles and quantitative formation of liquid calcium nitrate particles apparently as a result of heterogeneous reaction of calcium carbonate-containing mineral dust particles with gaseous nitric acid. Formation of nitrates from individual calcite and sea salt particles was followed as a function of time in aerosol samples collected at Shoresh, Israel. Morphology and compositional changes of individual particles were observed using conventional scanning electron microscopy with energy dispersive analysis of X-rays (SEM/EDX) and computer controlled SEM/EDX. Environmental scanning electron microscopy (ESEM) was utilized to determine and demonstrate the hygroscopic behavior of calcium nitrate particles found in some of the samples. Calcium nitrate particles are exceptionally hygroscopic and deliquesce even at very low relative humidity (RH) of 9-11 % which is lower than typical atmospheric environments. Transformation of non-hygroscopic dry mineral dust particles into hygroscopic wet aerosol may have substantial impacts on light scattering properties, the ability to modify clouds and heterogeneous chemistry. C1 Pacific NW Natl Lab, William R Wiley Environm Mol Sci Lab, Richland, WA 99352 USA. Weizmann Inst Sci, Dept Environm Sci, IL-76100 Rehovot, Israel. Agr Res Org, Volcani Ctr, Inst Soil Water & Environm Sci, IL-50250 Bet Dagan, Israel. RP Laskin, A (reprint author), Pacific NW Natl Lab, William R Wiley Environm Mol Sci Lab, POB 999,MSIN K8-88, Richland, WA 99352 USA. EM Alexander.Laskin@pnl.gov; Yinon.Rudich@weizmann.ac.il RI Rudich, Yinon/K-1498-2012; Laskin, Alexander/I-2574-2012; OI Laskin, Alexander/0000-0002-7836-8417; Rudich, Yinon/0000-0003-3149-0201 NR 86 TC 102 Z9 105 U1 8 U2 45 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1364-5498 J9 FARADAY DISCUSS JI Faraday Discuss. PY 2005 VL 130 BP 453 EP 468 DI 10.1039/b417366j PG 16 WC Chemistry, Physical SC Chemistry GA 963KV UT WOS:000231804100027 PM 16161798 ER PT J AU Sloutskin, E Bain, CD Ocko, BM Deutsch, M AF Sloutskin, E Bain, CD Ocko, BM Deutsch, M TI Surface freezing of chain molecules at the liquid-liquid and liquid-air interfaces SO FARADAY DISCUSSIONS LA English DT Article ID WATER-HEXANE INTERFACE; X-RAY REFLECTIVITY; N-ALKANES; PHASE-TRANSITIONS; SIO2/AIR INTERFACES; CRYSTAL NUCLEATION; BINARY-MIXTURES; ORDERED PHASE; MONOLAYERS; CRYSTALLIZATION AB Surface freezing (SF) is the formation of a crystalline monolayer at the free surface of a melt at a temperature T-s, a few degrees above the bulk freezing temperature, T-b. This effect, i.e. T-s>T-b, common to many chain molecules, is in a marked contrast with the surface melting effect, i.e. T(s)less than or equal toT(b), shown by almost all other materials. Depending on chain length, n, the SF layer shows a variety of phases, in some cases tuneable by bulk additives. The SF behaviour of binary mixtures of different-length alkanes and alcohols is governed by the relative chain length mismatch, \Deltan/n\(2), yielding a quasi-"universal'' behaviour for the freezing of both bulk and surface. While SF at the liquid-air interface was studied rather extensively, Lei and Bain (Phys. Rev. Lett., 2004, 94, 176103) have shown only very recently that interfacial freezing (IF) can be induced also at the water : tetradecane interface by adding the ionic surfactant CTAB to the water phase. We present measurements of the interfacial tension of the water : hexadecane interface, as a function of temperature and the ionic surfactant STAB, revealing IF at a STAB-concentration-dependent temperature T-i>T-b. The measurements indicate that a single frozen monolayer is formed, with a temperature-existence range of up to 10degreesC, much larger than the 1.2degreesC found for SF at the free surface of the melt. We also find a new effect, where the IF allows tuning of the interfacial tension between the two bulk phases to zero for a range of temperatures, deltaT=T-mix-T(b)less than or equal toT(i)-T-b by cooling the system below T-i. We discuss qualitatively the factors stabilizing the frozen layer and their variation from the liquid-air to the liquid-liquid interfaces. The surfactant concentration dependence of T-i is also discussed and a tentative theoretical explanation is suggested. C1 Bar Ilan Univ, Dept Phys, IL-52900 Ramat Gan, Israel. Univ Oxford, Dept Chem, Oxford OX1 3TA, England. Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Deutsch, M (reprint author), Bar Ilan Univ, Dept Phys, IL-52900 Ramat Gan, Israel. EM deutsch@mail.biu.ac.il RI Bain, Colin/I-2792-2012 NR 72 TC 33 Z9 33 U1 0 U2 29 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1364-5498 J9 FARADAY DISCUSS JI Faraday Discuss. PY 2005 VL 129 BP 339 EP 352 DI 10.1039/b405969g PG 14 WC Chemistry, Physical SC Chemistry GA 880JM UT WOS:000225786100026 PM 15715317 ER PT B AU Guzik, JA AF Guzik, JA BE Humphreys, RM Stanek, KZ TI Instability considerations for massive star eruptions SO Fate of the Most Massive Stars, Proceedings SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Meeting on Fate of the Most Massive Stars CY MAY 23-28, 2004 CL Grand Teton Natl Pk, WY SP Natl Sci Fdn, Astron Div ID LUMINOUS BLUE VARIABLES; ETA-CARINAE AB We propose a mechanism to explain the observed properties of the giant eruptions of 'supernova imposters' such as 17 Car and P Cyg. This mechanism must be episodic, generate a large amount of energy, and be deep seated, in order to lift about 10 solar masses out of the deep gravitational potential well of these massive evolved stars. We suggest that nonradial gravity mode oscillations capable of existing in the core near the hydrogen-burning shell grow slowly to an amplitude sufficient to cause an episode of mixing of hydrogen-rich material downward into hotter denser layers. This mixing generates a burst of nuclear energy production that is responsible for the observed mass ejection and bolometric magnitude increase. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Guzik, JA (reprint author), Los Alamos Natl Lab, X-2,MS T085, Los Alamos, NM 87545 USA. NR 9 TC 5 Z9 5 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA BN 1-58381-195-8 J9 ASTR SOC P PY 2005 VL 332 BP 204 EP 208 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BDG86 UT WOS:000233430500036 ER PT B AU Guzik, JA Cox, AN Despain, KA AF Guzik, JA Cox, AN Despain, KA BE Humphreys, RM Stanek, KZ TI Pulsation-driven mass loss in luminous blue variables SO Fate of the Most Massive Stars, Proceedings SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Meeting on Fate of the Most Massive Stars CY MAY 23-28, 2004 CL Grand Teton Natl Pk, WY SP Natl Sci Fdn, Astron Div C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Guzik, JA (reprint author), Los Alamos Natl Lab, X-2,MS T085, Los Alamos, NM 87545 USA. NR 5 TC 3 Z9 3 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA BN 1-58381-195-8 J9 ASTR SOC P PY 2005 VL 332 BP 263 EP 263 PG 1 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BDG86 UT WOS:000233430500042 ER PT B AU Guzik, JA Austin, BA AF Guzik, JA Austin, BA BE Humphreys, RM Stanek, KZ TI Opacity effects on the pulsations of 20 solar mass models SO Fate of the Most Massive Stars, Proceedings SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Meeting on Fate of the Most Massive Stars CY MAY 23-28, 2004 CL Grand Teton Natl Pk, WY SP Natl Sci Fdn, Astron Div ID LUMINOUS BLUE VARIABLES C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Guzik, JA (reprint author), Los Alamos Natl Lab, X-2,MS T085, Los Alamos, NM 87545 USA. 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 1-58381-195-8 J9 ASTR SOC P PY 2005 VL 332 BP 265 EP 265 PG 1 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BDG86 UT WOS:000233430500044 ER PT B AU Heger, A Woosley, SE Baraffe, I AF Heger, A Woosley, SE Baraffe, I BE Humphreys, RM Stanek, KZ TI Final stages of the most massive stars SO FATE OF THE MOST MASSIVE STARS, PROCEEDINGS SE Astronomical Society of the Pacific Conference Series LA English DT Proceedings Paper CT Meeting on Fate of the Most Massive Stars CY MAY 23-28, 2004 CL Grand Teton Natl Pk, WY SP Natl Sci Fdn, Astron Div ID ZERO-METALLICITY STARS; GAMMA-RAY BURSTS; POPULATION-III; 1ST STARS; SUPERNOVAE; EVOLUTION; ABUNDANCES; COLLAPSARS; STABILITY; OBJECTS AB The first stars of the universe formed in a unique environment, free of metals and ionizing radiation. Current theory and numerical simulations indicate that they may have had an initial mass biased toward very massive stars. Very massive stars still seem to form today, Eta Carina being an example. Although these very massive stars we find today seem to exhibit vast mass loss, like the outbursts of Eta Carina, that might have been different for the first generation of stars. The final fate of a very massive star, whether it explodes as core collapse supernova, as pair instability supernova, as black-hole accretion-driven supernova, as gamma-ray burst, or just collapses to a. black hole; depends on how much mass the star has left when it reached the end of its evolution. Additional to initial mass, it also depends oil composition, rotation, and stellar companions. C1 Los Alamos Natl Lab, Theoret Astrophys Grp, Los Alamos, NM 87545 USA. RP Heger, A (reprint author), Los Alamos Natl Lab, Theoret Astrophys Grp, T-6,MS B227, Los Alamos, NM 87545 USA. EM alex@t6.lanl.gov NR 30 TC 2 Z9 2 U1 0 U2 3 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA BN 1-58381-195-8 J9 ASTR SOC P PY 2005 VL 332 BP 339 EP 349 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BDG86 UT WOS:000233430500056 ER PT B AU Tripp, JL Mortveit, HS Hansson, AA Gokhale, M AF Tripp, JL Mortveit, HS Hansson, AA Gokhale, M GP IEEE Comp Soc TI Metropolitan road traffic simulation on FPGAs SO FCCM 2005: 13TH ANNUAL IEEE SYMPOSIUM ON FIELD-PROGRAMMABLE CUSTOM COMPUTING MACHINES, PROCEEDINGS SE Annual IEEE Symposium on Field-Programmable Custom Computing Machines LA English DT Proceedings Paper CT 13th Annual IEEE Symposium on Field-Programmable Custom Computing Machines CY APR 18-20, 2005 CL Napa, CA SP IEEE, IEEE Comp Soc Tech Comm Comp Architecture AB This work demonstrates that road traffic simulation of entire metropolitan areas is possible with reconfigurable supercomputing that combines 64-bit microprocessors and FPGAs in a high bandwidth, low latency interconnect. Previously, traffic simulation on FPGAs was limited to very short road segments or required a very large number of FPGAs. Our data streaming approach overcomes scaling issues associated with direct implementations and still allows for high-level parallelism by dividing the data sets between hardware and software across the reconfigurable supercomputer Using one FPGA on the Cray XD1 supercomputer, we are able to achieve a 34.4x speed up over the AMD microprocessor System integration issues must be optimized to exploit this speedup in the overall simulation. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Tripp, JL (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. EM jjtripp@lanl.gov; henning@lanl.gov; hansson@lanl.gov; maya@lanl.gov NR 14 TC 6 Z9 6 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 0-7695-2445-1 J9 ANN IEEE SYM FIELD P PY 2005 BP 117 EP 126 PG 10 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering SC Computer Science GA BDL95 UT WOS:000234207300012 ER PT B AU Hemmert, KS Underwood, KD AF Hemmert, KS Underwood, KD GP IEEE Comp Soc TI An analysis of the double-precision floating-point FFT on FPGAs SO FCCM 2005: 13TH ANNUAL IEEE SYMPOSIUM ON FIELD-PROGRAMMABLE CUSTOM COMPUTING MACHINES, PROCEEDINGS SE Annual IEEE Symposium on Field-Programmable Custom Computing Machines LA English DT Proceedings Paper CT 13th Annual IEEE Symposium on Field-Programmable Custom Computing Machines CY APR 18-20, 2005 CL Napa, CA SP IEEE, IEEE Comp Soc Tech Comm Comp Architecture DE IEEE floating point; FFT; Fast Fourier Transform; FPGA; reconfigurable computing AB Advances in FPGA technology have led to dramatic improvements in double precision floating-point performance. Modern FPGAs boast several GigaFLOPs of raw computing power Unfortunately, this computing power is distributed across 30 floating-point units with over 10 cycles of latency each. The user must find two orders of magnitude more parallelism than is typically exploited in a single microprocessor; thus, it is not clear that the computational power of FPGAs can be exploited across a wide range of algorithms. This paper explores three implementation alternatives for the Fast Fourier Transform (FFT) on FPGAs. The algorithms are compared in terms of sustained performance and memory requirements for various FFT sizes and FPGA sizes. The results indicate that FPGAs are competitive with microprocessors in terms of performance and that the "correct" FFT implementation varies based on the size of the transform and the size of the FPGA. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Sandia Natl Labs, POB 5800,MS-1110, Albuquerque, NM 87185 USA. EM kshemme@sandia.gov; kdunder@sandia.gov NR 23 TC 14 Z9 14 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 0-7695-2445-1 J9 ANN IEEE SYM FIELD P PY 2005 BP 171 EP 180 PG 10 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering SC Computer Science GA BDL95 UT WOS:000234207300017 ER PT B AU Quinn, H Graham, P AF Quinn, H Graham, P GP IEEE Comp Soc TI Terrestrial-based radiation upsets: A cautionary tale SO FCCM 2005: 13TH ANNUAL IEEE SYMPOSIUM ON FIELD-PROGRAMMABLE CUSTOM COMPUTING MACHINES, PROCEEDINGS SE Annual IEEE Symposium on Field-Programmable Custom Computing Machines LA English DT Proceedings Paper CT 13th Annual IEEE Symposium on Field-Programmable Custom Computing Machines CY APR 18-20, 2005 CL Napa, CA SP IEEE, IEEE Comp Soc Tech Comm Comp Architecture AB Problems with terrestrial-based neutron radiation from cosmic rays have become more commonplace. While the incident rate from neutron radiation is lower than space-based radiation, physics, system design and system locations have combined to make systems increasingly vulnerable to terrestrial radiation. FPGA systems are particularly sensitive to neutron radiation, as the FPGAs, microprocessors and memory are all sensitive to upsets. We are interested in reconfigurable supercomputers, which need to be highly reliable and highly available despite being very sensitive to radiation. In this paper, we estimate the error rate for FPGAs, memory, and microprocessors so that predictions for the sensitivity of the Cray XD1 reconfigurable supercomputer can be made. We also present possible mitigation methods that are appropriate for neutron radiation upset rates. C1 Los Alamos Natl Lab, Los Alamos, NM 87544 USA. RP Los Alamos Natl Lab, Los Alamos, NM 87544 USA. EM hquinn@lanl.gov; grahamp@lanl.gov NR 28 TC 13 Z9 13 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 0-7695-2445-1 J9 ANN IEEE SYM FIELD P PY 2005 BP 193 EP 202 PG 10 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering SC Computer Science GA BDL95 UT WOS:000234207300019 ER PT J AU Xu, GY Gehring, PM AF Xu, GY Gehring, PM TI Obituary: Dr. Gen Shirane (1924-2005) SO FERROELECTRICS LA English DT Biographical-Item C1 Brookhaven Natl Lab, Upton, NY 11973 USA. Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA. RP Xu, GY (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. RI Xu, Guangyong/A-8707-2010 OI Xu, Guangyong/0000-0003-1441-8275 NR 1 TC 0 Z9 0 U1 0 U2 2 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0015-0193 J9 FERROELECTRICS JI Ferroelectrics PY 2005 VL 321 BP 3 EP 4 DI 10.1080/00150190500259566 PG 2 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA 981KO UT WOS:000233087700002 ER PT J AU Shirane, G Xu, GY Gehring, PM AF Shirane, G Xu, GY Gehring, PM TI Dynamics and structure of PMN and PZN SO FERROELECTRICS LA English DT Article; Proceedings Paper CT NATO Workshop on Disordered Ferroelectrics CY MAY, 2003 CL Kiev, UKRAINE SP NATO ID X-RAY-DIFFRACTION; POLARIZATION ROTATION; PHASE-TRANSITION; MONOCLINIC PHASE; SINGLE-CRYSTALS; PB(ZN1/3NB2/3)O3; PBMG1/3NB2/3O3; BEHAVIOR AB A review is given of recent neutron and x-ray scattering studies of the lead-oxide perovskite relaxor systems Pb(Zn 1/3 Nb 2/3 )O-3 - xPbTiO(3) (PZN- xPT) and Pb(Mg 1/3 Nb 2/3 )O-3 - x PbTiO3 (PMN-xPT). X-ray measurements by Noheda et al . have established that these two systems exhibit nearly identical phase diagrams in which a rhombohedral-monoclinic-tetragonal structural sequence takes place with increasing PbTiO3 concentration. Recent high-energy x-ray and neutron measurements on single crystals of PZN and PMN-10PT, however, show that the rhombohedral distortions occur only in the outermost 20-40 microns, while the bulk of each crystal transforms into a new phase X, which has a nearly cubic unit cell. This situation is very similar to the structural behavior of pure PMN at T-c = 220 K. A simple model has been suggested that correlates phase X to the unique atomic displacements of the polar nanoregions, which are created at the Burns temperature. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. Natl Inst Stand & Technol, Ctr Neutron Res, Gaithersburg, MD 20899 USA. RP Xu, GY (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. EM gxu@bnl.gov RI Xu, Guangyong/A-8707-2010; OI Xu, Guangyong/0000-0003-1441-8275; Gehring, Peter/0000-0002-9236-2046 NR 31 TC 10 Z9 10 U1 1 U2 7 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0015-0193 J9 FERROELECTRICS JI Ferroelectrics PY 2005 VL 321 BP 7 EP 19 DI 10.1080/00150190500259574 PG 13 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA 981KO UT WOS:000233087700004 ER PT S AU Gibson, BF Penninga, TD Timmermans, RGE Liou, AK AF Gibson, BF Penninga, TD Timmermans, RGE Liou, AK BE KalantarNayestanaki, N Timmermans, RGE Bakker, BLG TI Anomalous magnetic moment contributions to NN bremsstrahlung in the soft-photon approximation SO Few-Body Problems in Physics SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 19th European Conference on Few-Body Problems in Physics CY AUG 23-27, 2004 CL Groningen, NETHERLANDS SP Vrije Univ Amsterdam, Afdeling Natuurkunde, Groningen Congresbureau, KVI, KNAW, NIKHEF ID PROTON-PROTON BREMSSTRAHLUNG AB The soft photon approximation (SPA), which is relativistic and based upon A fundamental theorem for photon emission, is applied to explore two separate nucleon-nucleon bremsstrahlung (NN gamma) processes: pp gamma and np gamma. They are examined together in an effort to understand the mechanism which governs photon emission from these basic two-nucleon systems. In this investigation we focus upon the effect of the anomalous magnetic moments of the proton (K-p) and the neutron,, as derived by Nyman [1] (K-n). In our SPA calculation we use the standard Low amplitude M-mu(Low) as derived by Newman [1] plus the more recently developed amplitude M-mu(TuTts), referred to as the two-u-two-t special (TuTts) A amplitude [2, 3]. The amplitude M-mu(TuTts) is identical to the amplitude M-mu(Low) through order K-0 in the soft-photon expansion. However, M-mu(TuTts) includes an additional term M-mu((3)) (K-1; kappa) (plus higher order terms) [4]. The term M-mu((3)) (K-1; kappa) is of order K-1 in the soft-photon expansion and it is a function of K-p and K-n. Using the amplitudes M-mu(TuTts) and M-mu(Low) we have calculated pp gamma and np gamma cross sections as a function of photon angle Psi(gamma) with and without contributions from K-p and K-n. Comparison with available pp gamma data [6, 7, 8, 9] has been made; in particular, the contribution from M (3) (K-1; kappa) has been investigated. Results will be presented and discussed which relate to the following: (i) The anomalous magnetic moment effect is significant in pp gamma; however, it is small in np gamma. That is, the two amplitudes M-mu(TuTts) and M-mu(Low) yield very similar np gamma cross sections, but they predict very different pp gamma cross sections. (ii) M-mu(TuTts) appears to provide a better SPA than M-mu(Low) in the case of pp gamma. Because K-p terms dominate the pp gamma cross section, the contribution from M-mu((3)) (K-1; kappa) is important. A Clearly, M-mu((3)) (K-1; kappa) makes a significant difference. (iii) The reason why M-mu(TuTts) and M-mu(Low) predict similar np gamma cross sections will be analyzed and discussed. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Gibson, BF (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. 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 0-7354-0253-1 J9 AIP CONF PROC PY 2005 VL 768 BP 132 EP 134 PG 3 WC Physics, Multidisciplinary SC Physics GA BCK90 UT WOS:000229780400030 ER PT S AU Gibson, BF Hiyama, E Kamimura, A AF Gibson, BF Hiyama, E Kamimura, A BE KalantarNayestanaki, N Timmermans, RGE Bakker, BLG TI Four-body calculation of the first 0(+) excited state of He-4 SO Few-Body Problems in Physics SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 19th European Conference on Few-Body Problems in Physics CY AUG 23-27, 2004 CL Groningen, NETHERLANDS SP Vrije Univ Amsterdam, Afdeling Natuurkunde, Groningen Congresbureau, KVI, KNAW, NIKHEF ID INELASTIC ELECTRON SCATTERING; LOW MOMENTUM TRANSFER C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Gibson, BF (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0253-1 J9 AIP CONF PROC PY 2005 VL 768 BP 144 EP 144 PG 1 WC Physics, Multidisciplinary SC Physics GA BCK90 UT WOS:000229780400036 ER PT S AU Epelbaum, E AF Epelbaum, E BE KalantarNayestanaki, N Timmermans, RGE Bakker, BLG TI Effective field theory and isospin violation in few-nucleon systems SO Few-Body Problems in Physics SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 19th European Conference on Few-Body Problems in Physics CY AUG 23-27, 2004 CL Groningen, NETHERLANDS SP Vrije Univ Amsterdam, Afdeling Natuurkunde, Groningen Congresbureau, KVI, KNAW, NIKHEF ID SCATTERING AB I discuss the leading and subleading isospin-breaking three-nucleon forces in the chiral effective field theory framework. C1 Jefferson Lab, Div Theory, Newport News, VA 23606 USA. RP Epelbaum, E (reprint author), Jefferson Lab, Div Theory, Newport News, VA 23606 USA. NR 14 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 0-7354-0253-1 J9 AIP CONF PROC PY 2005 VL 768 BP 174 EP 178 PG 5 WC Physics, Multidisciplinary SC Physics GA BCK90 UT WOS:000229780400045 ER PT S AU Dohrmann, F Abbott, D Ahmidouch, A Ambrozewicz, P Armstrong, CS Arrington, J Asaturyan, R Assamagan, K Avery, S Bailey, K Beedoe, S Bitao, H Breuer, H Brown, DS Carlini, R Cha, J Chant, N Christy, E Cochran, A Cole, L Collins, G Cothran, C Crowder, J Cummings, WJ Danagoulian, S Duncan, F Dunne, J Dutta, D Eden, T Elaasar, M Ent, R Ewell, L Fenker, H Fortune, HT Fujii, Y Gan, L Gao, H Garrow, K Geesaman, DF Gueye, P Gustafsson, K Hafidi, K Hansen, JO Hinton, W Jackson, HE Juengst, H Keppel, C Klein, A Koltenuk, D Liang, Y Liu, JH Lung, A Mack, D Madey, R Markowitz, P Martoff, CJ Meekins, D Mitchell, J Miyoshi, T Mkrtchyan, H Mohring, R Mtingwa, SK Mueller, B O'Neill, TG Niculescu, G Niculescu, I Potterveld, D Price, JW Raue, BA Reimer, PE Reinhold, J Roche, J Roos, P Sarsour, M Sato, Y Savage, G Sawafta, R Segel, RE Semenov, AY Stepanyan, S Tadevosian, V Tajima, S Tang, L Terburg, B Uzzle, A Wood, S Yamaguchi, H Yan, C Yan, C Yuan, L Zeier, M Zeidman, B Zihlmann, B AF Dohrmann, F Abbott, D Ahmidouch, A Ambrozewicz, P Armstrong, CS Arrington, J Asaturyan, R Assamagan, K Avery, S Bailey, K Beedoe, S Bitao, H Breuer, H Brown, DS Carlini, R Cha, J Chant, N Christy, E Cochran, A Cole, L Collins, G Cothran, C Crowder, J Cummings, WJ Danagoulian, S Duncan, F Dunne, J Dutta, D Eden, T Elaasar, M Ent, R Ewell, L Fenker, H Fortune, HT Fujii, Y Gan, L Gao, H Garrow, K Geesaman, DF Gueye, P Gustafsson, K Hafidi, K Hansen, JO Hinton, W Jackson, HE Juengst, H Keppel, C Klein, A Koltenuk, D Liang, Y Liu, JH Lung, A Mack, D Madey, R Markowitz, P Martoff, CJ Meekins, D Mitchell, J Miyoshi, T Mkrtchyan, H Mohring, R Mtingwa, SK Mueller, B O'Neill, TG Niculescu, G Niculescu, I Potterveld, D Price, JW Raue, BA Reimer, PE Reinhold, J Roche, J Roos, P Sarsour, M Sato, Y Savage, G Sawafta, R Segel, RE Semenov, AY Stepanyan, S Tadevosian, V Tajima, S Tang, L Terburg, B Uzzle, A Wood, S Yamaguchi, H Yan, C Yan, C Yuan, L Zeier, M Zeidman, B Zihlmann, B BE KalantarNayestanaki, N Timmermans, RGE Bakker, BLG TI Electroproduction of strangeness on H-3,4(Lambda) bound states on Helium SO Few-Body Problems in Physics SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 19th European Conference on Few-Body Problems in Physics CY AUG 23-27, 2004 CL Groningen, NETHERLANDS SP Vrije Univ Amsterdam, Afdeling Natuurkunde, Groningen Congresbureau, KVI, KNAW, NIKHEF AB The A(e,e'K+)X reaction has been investigated at Jefferson Laboratory. Data were taken for Q(2) approximate to 0.35 GeV2 at a beam energy of 3.245 GeV for H-1, He-3 and He-4 targets. Evidence for Lambda-hypernuclear bound states is seen for He-3,He-4 targets. This is the first time that the electroproduction of these hypernuclei has been observed. C1 Argonne Natl Lab, Argonne, IL 60439 USA. RP Dohrmann, F (reprint author), Argonne Natl Lab, Argonne, IL 60439 USA. RI Arrington, John/D-1116-2012; Reimer, Paul/E-2223-2013 OI Arrington, John/0000-0002-0702-1328; NR 9 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0253-1 J9 AIP CONF PROC PY 2005 VL 768 BP 294 EP 296 PG 3 WC Physics, Multidisciplinary SC Physics GA BCK90 UT WOS:000229780400080 ER PT S AU Holl, A Krassnigg, A Roberts, CD AF Holl, A Krassnigg, A Roberts, CD BE KalantarNayestanaki, N Timmermans, RGE Bakker, BLG TI Dyson-Schwinger equation study of the first excited state of the pion SO Few-Body Problems in Physics SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 19th European Conference on Few-Body Problems in Physics CY AUG 23-27, 2004 CL Groningen, NETHERLANDS SP Vrije Univ Amsterdam, Afdeling Natuurkunde, Groningen Congresbureau, KVI, KNAW, NIKHEF AB We report an investigation of the pion's first excited state using QCD's Dyson-Schwinger equations. Exact results and a numerical study are presented. C1 Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. RP Holl, A (reprint author), Argonne Natl Lab, Div Phys, Argonne, IL 60439 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 0-7354-0253-1 J9 AIP CONF PROC PY 2005 VL 768 BP 378 EP 378 PG 1 WC Physics, Multidisciplinary SC Physics GA BCK90 UT WOS:000229780400111 ER PT S AU Dawson, JW Liao, Z Mitchell, S Messerly, M Beach, R Jovanovic, I Brown, C Payne, S Barty, CPJ AF Dawson, JW Liao, Z Mitchell, S Messerly, M Beach, R Jovanovic, I Brown, C Payne, S Barty, CPJ BE Durvasula, LN Brown, AJW Nilsson, J TI Fiber laser front ends for high-energy short pulse lasers SO Fiber Lasers II: Technology, Systems, and Applications SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Fiber Lasers II CY JAN 24-27, 2005 CL San Jose, CA SP SPIE, Southampton Photon Inc DE short pulse lasers; fiber lasers; laser front ends AB We are developing an all fiber laser system optimized for providing input pulses for short pulse (1-10ps), high energy (similar to 1kJ) 2 lass laser systems. Fiber lasers are ideal solutions for these systems as they are highly reliable and once constructed they can be operated with ease. Furthermore, they offer an additional benefit of significantly reduced footprint. In most labs containing equivalent bulk laser systems, the system occupies two 4'x8' tables and would consist of 10's if not a 100 of optics which would need to be individually aligned and maintained. The design requirements for this application are very different those commonly seen in fiber lasers. High energy lasers often have low repetition rates (as low as one pulse every few hours) and thus high average power and efficiency are of little practical value. What is of high value is pulse energy, high signal to noise ratio (expressed as pre-pulse contrast), good beam quality, consistent output parameters and timing. Our system focuses on maximizing these parameters sometimes at the expense of efficient operation or average power. Our prototype system consists of a mode-locked fiber laser, a compressed pulse fiber amplifier, a "pulse cleaner", a chirped fiber Bragg grating, pulse selectors, a transport fiber system and a large flattened mode fiber amplifier. In our talk we will review the system in detail and present theoretical and experimental studies of critical components. We will also present experimental results from the integrated system. C1 Lawrence Livermore Natl Lab, Natl Ignit Facil, Livermore, CA 94550 USA. RP Dawson, JW (reprint author), Lawrence Livermore Natl Lab, Natl Ignit Facil, 7000 E Ave, Livermore, CA 94550 USA. NR 9 TC 3 Z9 3 U1 0 U2 4 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-5683-7 J9 P SOC PHOTO-OPT INS PY 2005 VL 5709 BP 37 EP 44 DI 10.1117/12.591147 PG 8 WC Optics SC Optics GA BCH98 UT WOS:000229383800007 ER PT S AU Drobshoff, A Dawson, JW Pennington, DM Payne, SA Beach, R Taylor, L AF Drobshoff, A Dawson, JW Pennington, DM Payne, SA Beach, R Taylor, L BE Durvasula, LN Brown, AJW Nilsson, J TI 469nm fiber laser source SO Fiber Lasers II: Technology, Systems, and Applications SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Fiber Lasers II CY JAN 24-27, 2005 CL San Jose, CA SP SPIE, Southampton Photon Inc ID EFFICIENT AB We have demonstrated 466 mW of 469 nm light from a frequency doubled continuous wave fiber laser. The system consisted of a 938 run single frequency laser diode master oscillator, which was amplified in two stages to 5 Watts using cladding pumped Nd3+ fiber amplifiers and then frequency doubled in a single pass through periodically poled KTP. The 3 cm long PPKTP crystal was made by Raicol Crystals Ltd. with a period of 5.9 mu m and had a phase match temperature of 47 degrees Centigrade. The beam was focused to a 1/e(2) diameter in the crystal of 29 mu m. Overall conversion efficiency was 11% and the results agreed well with standard models. Our 938 nm fiber amplifier design minimizes amplified spontaneous emission at 1088 nm by employing an optimized core to cladding size ratio. This design allows the 3-level transition to operate at high inversion, thus making it competitive with the 1088 nm 4-level transition. We have also carefully chosen the fiber coil diameter to help suppress propagation of wavelengths longer than 938 nm. At 2 Watts, the 938 nm laser had an M-2 of 1.1 and good polarization (correctable with a quarter and half wave plate to > 10:1). C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Drobshoff, A (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA. NR 11 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 0-8194-5683-7 J9 P SOC PHOTO-OPT INS PY 2005 VL 5709 BP 193 EP 198 DI 10.1117/12.591171 PG 6 WC Optics SC Optics GA BCH98 UT WOS:000229383800026 ER PT S AU Koplow, JP Kliner, DA Moore, SW AF Koplow, JP Kliner, DA Moore, SW BE Durvasula, LN Brown, AJW Nilsson, J TI Diode-bar side-pumping of double-clad fibers SO Fiber Lasers II: Technology, Systems, and Applications SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Fiber Lasers II CY JAN 24-27, 2005 CL San Jose, CA SP SPIE, Southampton Photon Inc ID LASER; POWER AB a formatted diode bar, the raw output of the diode bar is reformatted into a beam waist with a divergence, aspect ratio, and fill factor suitable for coupling into a conventional multimode fiber pigtail. The main drawbacks to formatted diode bar pump sources are cost, complexity and an inevitable tradeoff between coupling efficiency and source brightness. In this paper we describe how the Embedded Mirror Side Pumping (EMSP) technique allows the raw output of an unformatted diode bar to be used directly for side pumping double clad fiber (DCF) amplifiers. The EMSP technique allows the raw output of an unformatted diode bar to be coupled directly into the DCF inner cladding, without the same penalties in cost, complexity, coupling efficiency and loss of brightness. In particular, for applications at the 10 to 100 Watt power level and applications that require arrays of DCF amplifiers, diode bar EMSP will provide a very attractive alternative to systems based on for-matted diode bar pump sources. C1 Sandia Natl Labs, Livermore, CA 94551 USA. RP Koplow, JP (reprint author), Sandia Natl Labs, POB 969, Livermore, CA 94551 USA. NR 17 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 0-8194-5683-7 J9 P SOC PHOTO-OPT INS PY 2005 VL 5709 BP 284 EP 300 DI 10.1117/12.591710 PG 17 WC Optics SC Optics GA BCH98 UT WOS:000229383800036 ER PT B AU Kolda, TG Bader, BW Kenny, JP AF Kolda, TG Bader, BW Kenny, JP BE Han, J Wah, BW Raghavan, V Wu, X Rastogi, R TI Higher-order web link analysis using multilinear algebra SO Fifth IEEE International Conference on Data Mining, Proceedings LA English DT Proceedings Paper CT 5th IEEE International Conference on Data Mining CY NOV 27-30, 2005 CL Houston, TX SP IEEE Comp Soc, TCII, IEEE Comp Soc, TCPAMI, IBM Res, Knowledge & Informat Syst, Web Intelligence Consortium, Univ Louisiana Lafayette, Ctr Adv Comp Studies, Amer Discount ADS Inc, Univ Houston, Dept Comp Sci, Elder Res Inc ID TENSORS AB Linear algebra is a powerful and proven tool in web search. Techniques, such as the PageRank algorithm of Brin and Page and the HITS algorithm of Kleinberg, score web pages based on the principal eigenvector (or singular vector) of a particular non-negative matrix that captures the hyperlink structure of the web graph. We propose and test a new methodology that uses multilinear algebra to elicit more information from a higher-order representation of the hyperlink graph. We start by labeling the edges in our graph with the anchor text of the hyperlinks so that the associated linear algebra representation is a sparse, three-way tensor. The first two dimensions of the tensor represent the web pages while the third dimension adds the anchor text. We then use the rank-I factors of a multilinear PARAFAC tensor decomposition, which are akin to singular vectors of the SVD, to automatically identify topics in the collection along with the associated authoritative web pages. C1 Sandia Natl Labs, Livermore, CA 94550 USA. RP Kolda, TG (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA. RI Kolda, Tamara/B-1628-2009 OI Kolda, Tamara/0000-0003-4176-2493 NR 40 TC 7 Z9 8 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 BN 0-7695-2278-5 PY 2005 BP 242 EP 249 DI 10.1109/ICDM.2005.77 PG 8 WC Computer Science, Artificial Intelligence; Computer Science, Information Systems SC Computer Science GA BDS21 UT WOS:000235162400031 ER PT B AU Martin, S AF Martin, S BE Han, J Wah, BW Raghavan, V Wu, X Rastogi, R TI Training support vector machines using Gilbert's algorithm SO Fifth IEEE International Conference on Data Mining, Proceedings LA English DT Proceedings Paper CT 5th IEEE International Conference on Data Mining CY NOV 27-30, 2005 CL Houston, TX SP IEEE Comp Soc, TCII, IEEE Comp Soc, TCPAMI, IBM Res, Knowledge & Informat Syst, Web Intelligence Consortium, Univ Louisiana Lafayette, Ctr Adv Comp Studies, Amer Discount ADS Inc, Univ Houston, Dept Comp Sci, Elder Res Inc DE support vector machines; Gilbert's algorithm; nearest point algorithm; sequential minimal optimization AB Support Vector Machines are classifiers designed around the computation of an optimal separating hyperplane. This hyperplane is typically obtained by solving a constrained quadratic programming problem, but may also be located by solving a nearest point problem. Gilbert's Algorithm can be used to solve this nearest point problem but is unreasonably slow. In this paper we present a modified version of Gilbert's Algorithm for the fast computation of the Support Vector Machine hyperplane. We then compare our algorithm with the Nearest Point Algorithm and with Sequential Minimal Optimization. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Martin, S (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 20 TC 0 Z9 0 U1 0 U2 1 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 USA BN 0-7695-2278-5 PY 2005 BP 306 EP 313 DI 10.1109/ICDM.2005.145 PG 8 WC Computer Science, Artificial Intelligence; Computer Science, Information Systems SC Computer Science GA BDS21 UT WOS:000235162400039 ER PT B AU Foster, I AF Foster, I BE Stockinger, H Buyya, R Perrott, R TI Service-oriented science: Scaling the application and impact of eresearch SO First International Conference on e-Science and Grid Computing, Proceedings LA English DT Proceedings Paper CT 1st International Conference on e-Science and Grid Computing CY DEC 05-08, 2005 CL Melbourne, AUSTRALIA C1 Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. RP Foster, I (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 9 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 0-7695-2448-6 PY 2005 BP 2 EP 2 DI 10.1109/E-SCIENCE.2005.75 PG 1 WC Computer Science, Theory & Methods SC Computer Science GA BDR89 UT WOS:000235152600001 ER PT B AU Collins, LM Mane, KK Martinez, MLB Hussell, JAT Luce, RE AF Collins, LM Mane, KK Martinez, MLB Hussell, JAT Luce, RE BE Stockinger, H Buyya, R Perrott, R TI ScienceSifter: Facilitating activity awareness in collaborative research groups through focused information feeds SO First International Conference on e-Science and Grid Computing, Proceedings LA English DT Proceedings Paper CT 1st International Conference on e-Science and Grid Computing CY DEC 05-08, 2005 CL Melbourne, AUSTRALIA AB As the amount of scientific information available to researchers increases, the challenge of sifting through the information to find what is truly important to their work increases, as well. In this paper we describe ScienceSifter, a tool that addresses this challenge by enabling groups of researchers and channel editors to create and customize information feeds. Using ScienceSifter, users can combine several information feeds, then filter them by keywords to create a focused information feed. They can view the feed in a shared information space in the form of a list, a list with descriptions, or a hyberbolic tree visualization, and they can save items to a shared list. Thus ScienceSifter can reduce the amount of time researchers spend finding and sharing information. It can facilitate shared intellectual activity and activity awareness among the members of the group. C1 Los Alamos Natl Lab, Res Lib, Los Alamos, NM 87545 USA. RP Collins, LM (reprint author), Los Alamos Natl Lab, Res Lib, POB 1663, Los Alamos, NM 87545 USA. NR 20 TC 1 Z9 1 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 0-7695-2448-6 PY 2005 BP 40 EP 47 DI 10.1109/E-SCIENCE.2005.72 PG 8 WC Computer Science, Theory & Methods SC Computer Science GA BDR89 UT WOS:000235152600008 ER PT S AU Quigg, C AF Quigg, C BE Barnes, T Godfrey, S Petrov, AA Swanson, E TI Theoretical overview: The new Mesons SO First Meeting of the APS Topical Group on Hadronic Physics SE JOURNAL OF PHYSICS CONFERENCE SERIES LA English DT Proceedings Paper CT 1st Meeting of the American-Physical-Society-Topical-Group-on-Hadronic-Physics CY OCT 24-26, 2004 CL Batavia, IL SP Amer Phys Soc, Top Grp Hadron Phys ID MULTI-QUARK HADRONS; FIELD THEORY; NUCLEON; CHARM; STATE; SCATTERING AB After commenting on the state of contemporary hadronic physics and spectroscopy, I highlight four areas where the action is: searching for the relevant degrees of freedom, Mesons with beauty and charm, chiral symmetry and the D-sJ levels, and X(3872) and the lost tribes of charmonium. C1 Fermilab Natl Accelerator Lab, Dept Theoret Phys, Batavia, IL 60510 USA. RP Quigg, C (reprint author), Fermilab Natl Accelerator Lab, Dept Theoret Phys, POB 500, Batavia, IL 60510 USA. NR 75 TC 2 Z9 2 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2005 VL 9 BP 1 EP 10 DI 10.1088/1742-6596/9/1/001 PG 10 WC Physics, Particles & Fields SC Physics GA BCT92 UT WOS:000231202100001 ER PT S AU Lincoln, D AF Lincoln, D BE Barnes, T Godfrey, S Petrov, AA Swanson, E TI Recent results from D circle divide and CDF SO First Meeting of the APS Topical Group on Hadronic Physics SE JOURNAL OF PHYSICS CONFERENCE SERIES LA English DT Proceedings Paper CT 1st Meeting of the American-Physical-Society-Topical-Group-on-Hadronic-Physics CY OCT 24-26, 2004 CL Batavia, IL SP Amer Phys Soc, Top Grp Hadron Phys ID STATES AB A summary of the Tevatron's measurements and searches for pentaquarks and X(3872) are presented. No evidence for pentaquarks has been observed, while the X(3872) has been confirmed and some characterization has been performed. While the initial measurements are of a simple nature, the X(3872) behaves similarly to the psi(2S), suggesting the X(3872) may be a form of unanticipated charmonium rather than a more exotic bound state of D mesons. In addition, a selected number of lifetime measurements of b-quark carrying hadrons are presented. While preliminary, these measurements are becoming competitive in precision with the B factories. These Proceedings end with some interesting measurements of the inclusive Pt and dijet mass cross-sections of b-quark containing jets. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Lincoln, D (reprint author), Fermilab Natl Accelerator Lab, Box 500, Batavia, IL 60510 USA. NR 10 TC 0 Z9 0 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2005 VL 9 BP 44 EP 52 DI 10.1088/1742-6596/9/1/005 PG 9 WC Physics, Particles & Fields SC Physics GA BCT92 UT WOS:000231202100005 ER PT S AU Cooper, PS AF Cooper, PS BE Barnes, T Godfrey, S Petrov, AA Swanson, E TI New results in charm meson spectroscopy from FOCUS and SELEX SO First Meeting of the APS Topical Group on Hadronic Physics SE JOURNAL OF PHYSICS CONFERENCE SERIES LA English DT Proceedings Paper CT 1st Meeting of the American-Physical-Society-Topical-Group-on-Hadronic-Physics CY OCT 24-26, 2004 CL Batavia, IL SP Amer Phys Soc, Top Grp Hadron Phys ID D-SJ(+)(2632); STATES AB I will review recent results in charmed meson spectroscopy from the Fermilab fixed target charm photo-production and hadro-production experiments, FOCUS and SELEX. FOCUS reports new measurements of the masses and widths of the D-2(*+) and D-2(*) mesons, evidence for D-0(*+) and D-0(*) broad states and a confirming observation of the D-sJ(+) (2317) and other recently observed high mass D4" states. SELEX has recently reported evidence for a new D-1- (2632) state in both the D-s(+)eta(0) and (DK+)-K-0 final states. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Cooper, PS (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. NR 15 TC 2 Z9 2 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2005 VL 9 BP 53 EP 58 DI 10.1088/1742-6596/9/1/006 PG 6 WC Physics, Particles & Fields SC Physics GA BCT92 UT WOS:000231202100006 ER PT S AU Bishai, M AF Bishai, M BE Barnes, T Godfrey, S Petrov, AA Swanson, E TI Charm and beauty production at CDF SO First Meeting of the APS Topical Group on Hadronic Physics SE JOURNAL OF PHYSICS CONFERENCE SERIES LA English DT Proceedings Paper CT 1st Meeting of the American-Physical-Society-Topical-Group-on-Hadronic-Physics CY OCT 24-26, 2004 CL Batavia, IL SP Amer Phys Soc, Top Grp Hadron Phys AB Using the data samples collected with the CDF Run II detector during 2002 and early 2003, new measurements of the production cross sections of charm and beauty hadrons at root s = 1960 GeV are presented. New measurements of the cross sections of centrally produced b-hadrons and J/psi mesons down to zero transverse momenta have been carried out. The large charm signals made available by the silicon vertex track trigger have enabled the measurement of the cross sections of D-0, D-*,D-+/-, and D-s mesons. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Bishai, M (reprint author), Brookhaven Natl Lab, Bldg 510E,POB 5000, Upton, NY 11973 USA. NR 8 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2005 VL 9 BP 95 EP 99 DI 10.1088/1742-6596/9/1/016 PG 5 WC Physics, Particles & Fields SC Physics GA BCT92 UT WOS:000231202100016 ER PT S AU Krassnigg, A Maris, P AF Krassnigg, A Maris, P BE Barnes, T Godfrey, S Petrov, AA Swanson, E TI Pseudoscalar and vector mesons as q(q)over-bar bound states SO FIRST MEETING OF THE APS TOPICAL GROUP ON HADRONIC PHYSICS SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 1st Meeting of the American-Physical-Society-Topical-Group-on-Hadronic-Physics CY OCT 24-26, 2004 CL Batavia, IL SP Amer Phys Soc, Top Grp Hadron Phys ID DYNAMICAL SYMMETRY-BREAKING; ELECTROMAGNETIC FORM-FACTOR; DYSON-SCHWINGER EQUATIONS; HADRON PHYSICS; CHARGE RADIUS; PION; CONFINEMENT; DECAY; BEHAVIOR; GAUGE AB Two-body bound states such as mesons are described by solutions of the Bethe-Salpeter equation. We discuss recent results for the pseudoscalar and vector meson masses and leptonic decay constants, ranging from pions up to cc bound states. Our results are in good agreement with data. Essential in these calculation is a momentum-dependent quark mass function, which evolves from a constituent-quark mass in the infrared region to a current-quark mass in the perturbative region. In addition to the mass spectrum, we review the electromagnetic form factors of the light mesons. Electromagnetic current conservation is manifest and the influence of intermediate vector mesons is incorporated self-consistently. The results for the pion form factor are in excellent agreement with experiment. C1 Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. RP Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. EM andreas.krassnigg@anl.gov; pim6@pitt.edu NR 47 TC 22 Z9 22 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2005 VL 9 BP 153 EP 160 DI 10.1088/1742-6596/9/1/029 PG 8 WC Physics, Particles & Fields SC Physics GA BCT92 UT WOS:000231202100029 ER PT S AU Dudek, J AF Dudek, J BE Barnes, T Godfrey, S Petrov, AA Swanson, E TI Triquark-diquark models of a Theta(1540)? SO First Meeting of the APS Topical Group on Hadronic Physics SE JOURNAL OF PHYSICS CONFERENCE SERIES LA English DT Proceedings Paper CT 1st Meeting of the American-Physical-Society-Topical-Group-on-Hadronic-Physics CY OCT 24-26, 2004 CL Batavia, IL SP Amer Phys Soc, Top Grp Hadron Phys AB The enhancement in the flavour exotic NK channel seen by a number of experiments has been interpreted as a resonant pentaquark state, the Theta(+)(1540). Theoretical efforts to understand its structure, with the aim of explaining both the low mass and small decay width, have thrown up the possibility of a triquark-diquark P-wave correlation. We will discuss the constituent quark model study of Karliner & Lipkin and suggest that their P-wave excitation energy is an underestimate, a more plausible value raising the Theta mass in this model to more than 1700 MeV. We also propose on rather general grounds that these correlated quark models give rise to not only exotic baryon states, but also exotic meson states, in particular the strangeness +2, isoscalar nu(+) which will decay to (K+K0). C1 Div Theory, Jefferson Lab, Newport News, VA 23606 USA. RP Dudek, J (reprint author), Div Theory, Jefferson Lab, 12000 Jefferson Ave, Newport News, VA 23606 USA. NR 8 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2005 VL 9 BP 209 EP 212 DI 10.1088/1742-6596/9/1/038 PG 4 WC Physics, Particles & Fields SC Physics GA BCT92 UT WOS:000231202100038 ER PT S AU Litvintsev, D AF Litvintsev, D BE Barnes, T Godfrey, S Petrov, AA Swanson, E TI Searches for pentaquarks at CDF SO First Meeting of the APS Topical Group on Hadronic Physics SE JOURNAL OF PHYSICS CONFERENCE SERIES LA English DT Proceedings Paper CT 1st Meeting of the American-Physical-Society-Topical-Group-on-Hadronic-Physics CY OCT 24-26, 2004 CL Batavia, IL SP Amer Phys Soc, Top Grp Hadron Phys AB Recently there has been revival of interest in exotic baryon spectroscopy triggered by experimental evidence for pentaquarks containing u,d,s and c-quarks. We report results of the searches for pentaquark states in decays Xi(-)pi(+/-) and D(*-)p, D(-)p and (D) over bar (0)p performed at CDF detector using 220 pb(-1) sample of p (p) over bar interactions at root s of 1.96 TeV. No evidence for narrow resonances were found in either mode. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Litvintsev, D (reprint author), Fermilab Natl Accelerator Lab, MS318,POB 500, Batavia, IL 60510 USA. NR 10 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2005 VL 9 BP 222 EP 225 DI 10.1088/1742-6596/9/1/041 PG 4 WC Physics, Particles & Fields SC Physics GA BCT92 UT WOS:000231202100041 ER PT S AU Richards, DG AF Richards, DG BE Barnes, T Godfrey, S Petrov, AA Swanson, E TI Lattice studies of baryons SO First Meeting of the APS Topical Group on Hadronic Physics SE JOURNAL OF PHYSICS CONFERENCE SERIES LA English DT Proceedings Paper CT 1st Meeting of the American-Physical-Society-Topical-Group-on-Hadronic-Physics CY OCT 24-26, 2004 CL Batavia, IL SP Amer Phys Soc, Top Grp Hadron Phys ID GENERALIZED PARTON DISTRIBUTIONS; VIRTUAL COMPTON-SCATTERING; QUARK-MODEL; NUCLEON; MATRIX; QCD AB This talk describes progress at understanding the properties of the nucleon and its excitations from lattice QCD. I begin with a review of recent lattice results for the lowest-lying states of the excited baryon spectrum. The need to approach physical values of the light quark masses is emphasized, enabling the effects of the pion cloud to be revealed. I then outline the development of techniques that will enable the extraction of the masses of the higher resonances, and describe how such calculations provide insight into the structure of the hadrons. Finally, I discuss direct probes of the quark and gluon structure of baryons through the lattice measurement of the moments of quark distributions and of Generalized Parton Distributions. C1 Jefferson Lab, Newport News, VA 23606 USA. RP Richards, DG (reprint author), Jefferson Lab, 12000 Jefferson Ave, Newport News, VA 23606 USA. NR 41 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2005 VL 9 BP 238 EP 247 DI 10.1088/1742-6596/9/1/044 PG 10 WC Physics, Particles & Fields SC Physics GA BCT92 UT WOS:000231202100044 ER PT S AU Melnitchouk, W AF Melnitchouk, W BE Barnes, T Godfrey, S Petrov, AA Swanson, E TI Quark-hadron duality in structure functions SO First Meeting of the APS Topical Group on Hadronic Physics SE JOURNAL OF PHYSICS CONFERENCE SERIES LA English DT Proceedings Paper CT 1st Meeting of the American-Physical-Society-Topical-Group-on-Hadronic-Physics CY OCT 24-26, 2004 CL Batavia, IL SP Amer Phys Soc, Top Grp Hadron Phys AB I review recent developments in quark-hadron duality in inclusive electron-nucleon scattering. Matrix elements of twist-4 operators extracted from moments of the spin-dependent g(1) structure function suggest that duality violating higher twists are small above Q(2) similar to 1 GeV2. The x dependence of local duality is analyzed within a quark model framework, and mechanisms are identified for spin-flavor symmetry breaking which underpin the behavior of structure functions at large x. C1 Jefferson Lab, Newport News, VA 23606 USA. RP Melnitchouk, W (reprint author), Jefferson Lab, 12000 Jefferson Ave, Newport News, VA 23606 USA. NR 7 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2005 VL 9 BP 260 EP 263 DI 10.1088/1742-6596/9/1/048 PG 4 WC Physics, Particles & Fields SC Physics GA BCT92 UT WOS:000231202100048 ER PT S AU Guo, L Weygand, DP Kubarovsky, V AF Guo, L Weygand, DP Kubarovsky, V BE Barnes, T Godfrey, S Petrov, AA Swanson, E TI Background study for the pentaquark search in the reaction gamma p ->pi(+)Kappa(-)Kappa(+) n SO First Meeting of the APS Topical Group on Hadronic Physics SE JOURNAL OF PHYSICS CONFERENCE SERIES LA English DT Proceedings Paper CT 1st Meeting of the American-Physical-Society-Topical-Group-on-Hadronic-Physics CY OCT 24-26, 2004 CL Batavia, IL SP Amer Phys Soc, Top Grp Hadron Phys AB A narrow baryon state with strangeness S=+1 and mass M = 1555 +/- 10 MeV/c(2) reported by the CLAS collaboration in the reaction gamma p -> pi(+)K(-)K(+)n, has been observed at Jefferson Lab using a tagged photon beam with an energy range of 3-5.47 GeV. A thorough investigation on whether background processes, such as pi(2)(1670) production, can reflect into the possible Theta(+) peak was conducted by performing a partial wave analysis on the three-body mesonic background in the energy range of 4.8-5.47 GeV. The analysis also probes other possible processes, and does not find evidence for the observed signal being a result of kinematic reflection. C1 Jefferson Lab, Newport News, VA 23606 USA. RP Guo, L (reprint author), Jefferson Lab, Newport News, VA 23606 USA. NR 10 TC 1 Z9 1 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2005 VL 9 BP 272 EP 275 DI 10.1088/1742-6596/9/1/051 PG 4 WC Physics, Particles & Fields SC Physics GA BCT92 UT WOS:000231202100051 ER PT S AU Steinberg, P AF Steinberg, P BE Barnes, T Godfrey, S Petrov, AA Swanson, E TI Bulk dynamics in high energy collisions SO FIRST MEETING OF THE APS TOPICAL GROUP ON HADRONIC PHYSICS SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 1st Meeting of the American-Physical-Society-Topical-Group-on-Hadronic-Physics CY OCT 24-26, 2004 CL Batavia, IL SP Amer Phys Soc, Top Grp Hadron Phys ID DISTRIBUTIONS; ANNIHILATION; MULTIPLICITY; HADRONS; QCD AB Empirical scaling laws abstracted from observations pertaining to soft particle production in heavy ion collisions provide interesting connections with phenomena observed in elementary collisions (p+p, e(+)e(-)). Connections are made between these simple empirical rules and Landau's hydrodynamical model. The implications and problematics of the Landau initial conditions for strong interaction phenomenology are discussed, with some emphasis on their relevance to elementary collisions. C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. RP Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. EM peter.steinberg@bnl.gov NR 28 TC 5 Z9 5 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2005 VL 9 BP 280 EP 285 DI 10.1088/1742-6596/9/1/053 PG 6 WC Physics, Particles & Fields SC Physics GA BCT92 UT WOS:000231202100053 ER PT S AU Majumder, A AF Majumder, A BE Barnes, T Godfrey, S Petrov, AA Swanson, E TI Jet Quenching: the medium modification of the single and double fragmentation functions SO First Meeting of the APS Topical Group on Hadronic Physics SE JOURNAL OF PHYSICS CONFERENCE SERIES LA English DT Proceedings Paper CT 1st Meeting of the American-Physical-Society-Topical-Group-on-Hadronic-Physics CY OCT 24-26, 2004 CL Batavia, IL SP Amer Phys Soc, Top Grp Hadron Phys ID MULTIPLE PARTON SCATTERING; ENERGY-LOSS; NUCLEAR ENVIRONMENT; QUARKS AB The physics of the quenching of hard jets in dense matter is briefly reviewed. This is presented within the framework of the partonic medium modification of the fragmentation functions. Modifications in both deeply inelastic scattering (DIS) off large nuclei and high-energy heavy-ion collisions are presented. C1 Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA. RP Majumder, A (reprint author), Lawrence Berkeley Lab, Div Nucl Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA. NR 25 TC 5 Z9 5 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2005 VL 9 BP 294 EP 297 DI 10.1088/1742-6596/9/1/056 PG 4 WC Physics, Particles & Fields SC Physics GA BCT92 UT WOS:000231202100056 ER PT S AU Appel, JA AF Appel, JA BE Barnes, T Godfrey, S Petrov, AA Swanson, E TI Future hadron physics facilities at Fermilab SO First Meeting of the APS Topical Group on Hadronic Physics SE JOURNAL OF PHYSICS CONFERENCE SERIES LA English DT Proceedings Paper CT 1st Meeting of the American-Physical-Society-Topical-Group-on-Hadronic-Physics CY OCT 24-26, 2004 CL Batavia, IL SP Amer Phys Soc, Top Grp Hadron Phys AB Fermilab's hadron physics research continues in all its accelerator-based programs. These efforts will be identified, and the optimization of the Fermilab schedules for physics will be described. In addition to the immediate plans, the Fermilab Long Range Plan will be cited, and the status and potential role of a new proton source, the Proton Driver, will be described. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Appel, JA (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. 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 1742-6588 J9 J PHYS CONF SER PY 2005 VL 9 BP 298 EP 302 DI 10.1088/1742-6596/9/1/057 PG 5 WC Physics, Particles & Fields SC Physics GA BCT92 UT WOS:000231202100057 ER PT S AU Raja, R AF Raja, R BE Barnes, T Godfrey, S Petrov, AA Swanson, E TI The Main Injector Particle Production Experiment (MIPP) at Fermilab SO First Meeting of the APS Topical Group on Hadronic Physics SE JOURNAL OF PHYSICS CONFERENCE SERIES LA English DT Proceedings Paper CT 1st Meeting of the American-Physical-Society-Topical-Group-on-Hadronic-Physics CY OCT 24-26, 2004 CL Batavia, IL SP Amer Phys Soc, Top Grp Hadron Phys ID DETECTOR; CHAMBERS AB We describe the physics capabilities and status of the MIPP experiment which is scheduled to enter its physics data taking period during December 2004-July 2005. We show some of the results obtained from the engineering run that concluded in August 2004 and point out the unique features of MIPP that make it an ideal apparatus to study non-perturbative QCD properties. 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 10 TC 5 Z9 5 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2005 VL 9 BP 303 EP 308 DI 10.1088/1742-6596/9/1/058 PG 6 WC Physics, Particles & Fields SC Physics GA BCT92 UT WOS:000231202100058 ER PT S AU Thomas, AW Ashley, JD Leinweber, DB Young, RD AF Thomas, AW Ashley, JD Leinweber, DB Young, RD BE Barnes, T Godfrey, S Petrov, AA Swanson, E TI Finite volume dependence of hadron properties and lattice QCD SO First Meeting of the APS Topical Group on Hadronic Physics SE JOURNAL OF PHYSICS CONFERENCE SERIES LA English DT Proceedings Paper CT 1st Meeting of the American-Physical-Society-Topical-Group-on-Hadronic-Physics CY OCT 24-26, 2004 CL Batavia, IL SP Amer Phys Soc, Top Grp Hadron Phys ID AXIAL CHARGE; BAG MODEL AB Because the time needed for a simulation in lattice QCD varies at a rate exceeding the fourth power of the lattice size, it is important to understand how small one can make a lattice without altering the physics beyond recognition. It is common to use a rule of thumb that the pion mass times the lattice size should be greater than (ideally much greater than) four (i.e., m(pi)L >> 4). By considering a relatively simple chiral quark model we are led to suggest that a more realistic constraint would be m(pi)(L - 2R) >> 4, where R is the radius of the confinement region, which for these purposes could be taken to be around 0.8-1.0 fm Within the model we demonstrate that violating the second condition can lead to unphysical behaviour of hadronic properties as a function of pion mass. In particular, the axial charge of the nucleon is found to decrease quite rapidly as the chiral limit is approached. C1 Jefferson Lab, Newport News, VA 23606 USA. RP Thomas, AW (reprint author), Jefferson Lab, 12000 Jefferson Ave, Newport News, VA 23606 USA. RI Thomas, Anthony/G-4194-2012; Young, Ross/H-8207-2012; Leinweber, Derek/J-6705-2013 OI Thomas, Anthony/0000-0003-0026-499X; Leinweber, Derek/0000-0002-4745-6027 NR 11 TC 9 Z9 9 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2005 VL 9 BP 321 EP 330 DI 10.1088/1742-6596/9/1/061 PG 10 WC Physics, Particles & Fields SC Physics GA BCT92 UT WOS:000231202100061 ER PT J AU Kerr, LA Andrews, AH Munk, K Coale, KH Frantz, BR Cailliet, GM Brown, TA AF Kerr, LA Andrews, AH Munk, K Coale, KH Frantz, BR Cailliet, GM Brown, TA TI Age validation of quillback rockfish (Sebastes maliger) using bomb radiocarbon SO FISHERY BULLETIN LA English DT Article ID PACIFIC RADIOCARBON; MARINE FISHES; PRE-BOMB; OTOLITHS; RUBERRIMUS; PATTERNS; HISTORY; ALASKA AB -Rockfishes (Sebastes spp.) support one of the most economically important fisheries of the Pacific Northwest and it is essential for sustainable management that age estimation procedures be validated for these species. Atmospheric testing of therm:)nuclear devices during the 1950s aid 1960s created a global radiocarbon ((14)C) signal in the ocean environment that scientists have identified as a useful tracer and chronological marker in natural systems. In this study, we first demonstrated that fewer samples are necessary for age validation using the bomb-generated (14)C signal by emphasizing the utility of the time-specific marker created by the initial rise of bomb (14)C. Second, the bomb-generated (14)C signal retained in fish otoliths was used to validate the age and age estimation method of the quillback rockfish (Sebastes maliger) in the waters of southeast Alaska. Radiocarbon values from the first year's growth of quillback rockfish otoliths were plotted against estimated birth year to produce a (14)C time series spanning 1950 to 1985. The initial rise in bomb-(14)C from prebomb levels (similar to -90parts per thousand, occurred in 1959 [+/-1 year] and (14)C levels rose relatively rapidly to peak Delta(14)C values in 1967 (+105.4%) and subequently declined through the end of the time series in 1985 (+15.4%0 The agreement between the year of initial rise of (14)C levels from the quill back rockfish time series and the chronology determined for the waters of southeast Alaska from yelloweye rockfish (S. ruberrimus) otoliths validated the aging method for the quiillback rockfish. The concordance of the entire quillback rockfish (14)C time series with the yelloweye rockfish time series demonstrated the effectiveness of this age validation technique, confirmed the longevity of the quillback rockfish up to a minimum of 43 years, and strongly confirms higher age estimates of up to 90 ye rs. C1 Calif State Univ, Moss Landing Marine Labs, Moss Landing, CA 95039 USA. Alaska Dept Fish & Game, Div Commercial Fisheries, Juneau, AK 99801 USA. Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94551 USA. RP Kerr, LA (reprint author), Univ Maryland, Ctr Environm Sci, Chesapeake Biol Lab, POB 38, Solomons, MD 20688 USA. EM kerr@cbl.umces.edu RI Andrews, Allen/G-3686-2016 OI Andrews, Allen/0000-0002-9001-8305 NR 43 TC 31 Z9 31 U1 5 U2 11 PU NATL MARINE FISHERIES SERVICE SCIENTIFIC PUBL OFFICE PI SEATTLE PA 7600 SAND POINT WAY NE BIN C15700, SEATTLE, WA 98115 USA SN 0090-0656 J9 FISH B-NOAA JI Fish. Bull. PD JAN PY 2005 VL 103 IS 1 BP 97 EP 107 PG 11 WC Fisheries SC Fisheries GA 894NO UT WOS:000226798800009 ER PT J AU Graff, GL Burrows, PE Williford, RE Praino, RF AF Graff, Gordon L. Burrows, Paul E. Williford, Rick E. Praino, Robert F. BE Crawford, GP TI Barrier Layer Technology for Flexible Displays SO FLEXIBLE FLAT PANEL DISPLAYS SE Wiley-SID Series in Display Technology LA English DT Article; Book Chapter ID LIGHT-EMITTING DEVICES; FILMS; PERMEATION; COATINGS; DEGRADATION; OXIDE; DEPOSITION; MORPHOLOGY; DIFFUSION; TRANSPORT C1 [Graff, Gordon L.; Burrows, Paul E.; Williford, Rick E.] Pacific NW Natl Lab, Div Mat Sci, Richland, WA 99354 USA. [Praino, Robert F.] Vitex Syst Inc, San Jose, CA 95134 USA. RP Graff, GL (reprint author), Pacific NW Natl Lab, Div Mat Sci, POB 999, Richland, WA 99354 USA. NR 47 TC 27 Z9 27 U1 5 U2 6 PU BLACKWELL SCIENCE PUBL PI OXFORD PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND BN 978-0-470-87050-1 J9 WILEY-SID SER DISPL PY 2005 BP 57 EP 77 DI 10.1002/0470870508.ch4 D2 10.1002/0470870508 PG 21 WC Materials Science, Multidisciplinary; Optics SC Materials Science; Optics GA BYC24 UT WOS:000297921000007 ER PT S AU Kim, DH Kang, B Chao, WL Fischer, P Anderson, E Choe, SB Im, MY Shin, SC AF Kim, DH Kang, B Chao, WL Fischer, P Anderson, E Choe, SB Im, MY Shin, SC BE Svedlindh, P Popovic, D Weissman, MB TI Direct spatial-temporal observation of Barkhausen avalanche in low dimensional ferromagnetic system SO Fluctuations and Noise in Materials II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Fluctuations and Noise in Materials II CY MAY 24-25, 2005 CL Austin, TX SP SPIE DE Barkhausen avalanche; magnetic domain; scaling behavior ID SELF-ORGANIZED CRITICALITY; MAGNETOOPTICAL MICROSCOPE MAGNETOMETER; MAGNETIC DOMAIN-WALL; X-RAY MICROSCOPY; THIN-FILMS; DYNAMICS; NOISE; HYSTERESIS; MOTION AB We report our direct observation of the Barkhausen avalanche in ferromagnetic thin film systems, where a collective spin behavior produces nontrivial fluctuations in magnetization change under an external magnetic field. For this study, we develop and use two direct full-field magnetic imaging techniques: magneto-optical microscope magnetometer (MOMM) and magnetic transmission X-ray microscopy (MTXM). From a direct visualization and a statistical analysis of the fluctuating domain images for Co thin films, we investigate the scaling behavior of the Barkhausen avalanche both on spatial and temporal scales using MOMM. We also investigate the reproducibility of the Barkhausen avalanche process. Interestingly, the partially stochastic nucleation behavior is observed for CoCrPt alloy films by means of MTXM on a nanometer scale comparable to the fundamental length scales such as the Barkhausen volume and the grain size of the polycrystalline films. Via these direct full-field observation techniques, dynamic details of Barkhausen avalanche are revealed. C1 Lawrence Berkeley Lab, Ctr Xray Opt, Berkeley, CA USA. RP Kim, DH (reprint author), Lawrence Berkeley Lab, Ctr Xray Opt, Berkeley, CA USA. RI Kim, Dong-Hyun/F-7195-2012 NR 35 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 0-8194-5838-4 J9 P SOC PHOTO-OPT INS PY 2005 VL 5843 BP 40 EP 51 DI 10.1117/12.609637 PG 12 WC Materials Science, Multidisciplinary SC Materials Science GA BCU20 UT WOS:000231241600008 ER PT S AU Baer, MR Schmitt, RG Hertel, ES DesJardin, PE AF Baer, MR Schmitt, RG Hertel, ES DesJardin, PE BE Chakrabarti, SK Hernandez, S Brebbia, CA TI Modeling enhanced blast explosives using a multiphase mixture approach SO Fluid Structure Interaction and Moving Boundary Problems SE WIT TRANSACTIONS ON THE BUILT ENVIRONMENT LA English DT Proceedings Paper CT 3rd International Conference on Fluid Structure Interaction/8th International Conference on Computational Modelling and Experimental Measurements of Free and Moving Boundary Problems CY SEP 19-21, 2005 CL Coruna, SPAIN SP Wessex Inst Technol, Univ La Coruna, WIT Transact Built Environm DE shock physics; blast waves; two-phase flow; combustion AB In this overview we present a reactive multiphase flow model to describe the physical processes associated with enhanced blast. This model is incorporated into CTH, a shock physics code, using a variant of the Baer and Nunziato nonequilibrium multiphase mixture to describe shock-driven reactive flow including the effects of interphase mass exchange, particulate drag, heat transfer and secondary combustion of multiphase mixtures. This approach is applied to address the various aspects of the reactive behavior of enhanced blast including detonation and the subsequent expansion of reactive products. The latter stage of reactive explosion involves shock-driven multiphase flow that produces instabilities which are the prelude to the generation of turbulence and subsequent mixing of surrounding air to cause secondary combustion. Turbulent flow is modeled in the context of Large Eddy Simulation (LES) with the formalism of multiphase PDF theory including a mechanistic model of metal combustion. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Baer, MR (reprint author), Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 11 TC 1 Z9 1 U1 0 U2 0 PU WIT PRESS PI SOUTHAMPTON PA ASHURST LODGE, SOUTHAMPTON SO40 7AA, ASHURST, ENGLAND SN 1746-4498 BN 1-84564-027-6 J9 WIT TRANS BUILT ENV PY 2005 VL 84 BP 393 EP 401 PG 9 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA BDY72 UT WOS:000236216900038 ER PT S AU Sun, A Baer, T Reddy, S Mondy, L Schunk, R Sackinger, P Rao, R Noble, D Bielenberg, J Graham, A AF Sun, A Baer, T Reddy, S Mondy, L Schunk, R Sackinger, P Rao, R Noble, D Bielenberg, J Graham, A BE Chakrabarti, SK Hernandez, S Brebbia, CA TI Wetting in pressure driven slot flow SO Fluid Structure Interaction and Moving Boundary Problems SE WIT TRANSACTIONS ON THE BUILT ENVIRONMENT LA English DT Proceedings Paper CT 3rd International Conference on Fluid Structure Interaction/8th International Conference on Computational Modelling and Experimental Measurements of Free and Moving Boundary Problems CY SEP 19-21, 2005 CL Coruna, SPAIN SP Wessex Inst Technol, Univ La Coruna, WIT Transact Built Environm DE wetting; interface tracking ID FINITE-ELEMENT-METHOD AB To test wetting models for predicting a range of wetting behaviours in slot flow, we utilize two finite-element techniques to model a fluid displacing air as it flows between parallel plates where the upper plate has a notch perpendicular to the flow direction. The notched portion of the upper plate is representative of a mold joint, a feature in the part to be potted, or even a long scratch in the plate surface. The goal is to study the wetting conditions that can minimize air entrapment in the notch. The numerical tool, developed at Sandia National Laboratories, is used to predict the front movement through the slot. Both a level-set formulation and an ALE formulation are used to track the front with two types of wetting models. A linear relationship between the wetting line velocity and the deviation between the dynamic and static contact angles is used when using the level-set algorithm, while a nonlinear wetting model originated by Blake is used for the ALE calculations. Preliminary results show that the capillary number, or the ratio of viscous forces to surface tension forces, is the dominant parameter. Nevertheless, whether or not the notch fills with liquid is also dependent on the velocity conditions imposed at the triple point. C1 Sandia Natl Labs, Engn Sci Ctr, Albuquerque, NM 87185 USA. Univ Texas, Dept Chem Engn, Austin, TX 78712 USA. Los Alamos Natl Lab, ESA MEE, Los Alamos, NM USA. RP Sun, A (reprint author), Sandia Natl Labs, Engn Sci Ctr, POB 5800, Albuquerque, NM 87185 USA. NR 10 TC 0 Z9 0 U1 1 U2 1 PU WIT PRESS PI SOUTHAMPTON PA ASHURST LODGE, SOUTHAMPTON SO40 7AA, ASHURST, ENGLAND SN 1746-4498 BN 1-84564-027-6 J9 WIT TRANS BUILT ENV PY 2005 VL 84 BP 661 EP 670 PG 10 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA BDY72 UT WOS:000236216900063 ER PT S AU Back, BB AF Back, BB BE Fini, RA Ghidini, B Lenti, V Virgili, T TI Studies of multiplicity in relativistic heavy-ion collisions SO Focus on Multiplicity: International Workshop on Particle Multiplicity in Relativistic Heavy Ion Collisions SE JOURNAL OF PHYSICS CONFERENCE SERIES LA English DT Proceedings Paper CT International Workshop on Particle Multiplicity in Relativistic Heavy Ion Collisions CY JUN 17-19, 2004 CL Bari, ITALY ID CHARGED-PARTICLE MULTIPLICITY; PLUS AU COLLISIONS; HIGH-DENSITY QCD; PSEUDORAPIDITY DISTRIBUTIONS; NUCLEAR COLLISIONS; MODEL; PP; ENERGIES; PARTON AB In this talk I'll review the present status of charged particle multiplicity measurements from heavy-ion collisions. The characteristic features of multiplicity distributions obtained in Au+Au collisions will be discussed in terms of collision centrality and energy and compared to those of p+p collisions. Multiplicity measurements of d+Au collisions at 200 GeV nucleon-nucleon center-of-mass energy will also be discussed. The results will be compared to various theoretical models and simple scaling properties of the data will be identified. C1 Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. RP Back, BB (reprint author), Argonne Natl Lab, Div Phys, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 39 TC 9 Z9 10 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2005 VL 5 BP 1 EP 16 DI 10.1088/1742-6596/5/1/001 PG 16 WC Physics, Particles & Fields SC Physics GA BCE15 UT WOS:000228818000001 ER PT S AU Hollis, RS Back, BB Baker, MD Bailintijn, M Barton, DS Betts, RR Bickley, AA Bindel, R Busza, W Carroll, A Chai, Z Decowski, MP Garcia, E Gburek, T George, N Gulbrandsen, K Halliwell, C Hamblen, J Hauer, M Henderson, C Hofman, DJ Hollis, RS Holynski, R Holzman, B Iordanova, A Johnson, E Kane, JL Khan, N Kulinich, P Kuo, CM Lin, WT Manly, S Mignerey, AC Nouicer, R Olszewski, A Pak, R Reed, C Roland, C Roland, G Sagerer, J Seals, H Sedykh, I Smith, CE Stankiewicz, MA Steinberg, P Stephans, GSF Sukhanov, A Tonjes, MB Trzupek, A Vale, C van Nieuwenhuizen, GJ Vaurynovich, SS Verdier, R Veres, GI Wenger, E Wolfs, FLH Wosiek, B Wozniak, K Wyslouch, B AF Hollis, RS Back, BB Baker, MD Bailintijn, M Barton, DS Betts, RR Bickley, AA Bindel, R Busza, W Carroll, A Chai, Z Decowski, MP Garcia, E Gburek, T George, N Gulbrandsen, K Halliwell, C Hamblen, J Hauer, M Henderson, C Hofman, DJ Hollis, RS Holynski, R Holzman, B Iordanova, A Johnson, E Kane, JL Khan, N Kulinich, P Kuo, CM Lin, WT Manly, S Mignerey, AC Nouicer, R Olszewski, A Pak, R Reed, C Roland, C Roland, G Sagerer, J Seals, H Sedykh, I Smith, CE Stankiewicz, MA Steinberg, P Stephans, GSF Sukhanov, A Tonjes, MB Trzupek, A Vale, C van Nieuwenhuizen, GJ Vaurynovich, SS Verdier, R Veres, GI Wenger, E Wolfs, FLH Wosiek, B Wozniak, K Wyslouch, B CA PHOBOS Collaboration BE Fini, RA Ghidini, B Lenti, V Virgili, T TI Using multiplicity as a fractional cross-section estimation for centrality in PHOBOS SO FOCUS ON MULTIPLICITY: INTERNATIONAL WORKSHOP ON PARTICLE MULTIPLICITY IN RELATIVISTIC HEAVY ION COLLISIONS SE Journal of Physics Conference Series LA English DT Proceedings Paper CT International Workshop on Particle Multiplicity in Relativistic Heavy Ion Collisions CY JUN 17-19, 2004 CL Bari, ITALY ID COLLISIONS AB Collision centrality is a valuable parameter used in relativistic nuclear physics which relates to geometrical quantities such as the number of participating nucleons. PHOBOS utilizes a multiplicity measurement as a means to estimate fractional cross-section of a collision event-by-event. From this, the centrality of this collision can be deduced. The details of the centrality determination depend both on the collision system and collision energy. Presented here are the techniques developed over the course of the RHIC program that axe used by PHOBOS to extract the centrality. Possible biases that have to be overcome before a final measurement can be interpreted are discussed. C1 Argonne Natl Lab, Argonne, IL 60439 USA. RP Hollis, RS (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. EM rholli3@uic.edu OI Holzman, Burt/0000-0001-5235-6314 NR 9 TC 6 Z9 6 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2005 VL 5 BP 46 EP 54 DI 10.1088/1742-6596/5/1/004 PG 9 WC Physics, Particles & Fields SC Physics GA BCE15 UT WOS:000228818000004 ER PT S AU Iordanova, A Back, BB Baker, MD Ballintijn, M Barton, DS Betts, RR Bickley, AA Bindel, R Busza, W Carroll, A Chai, Z Decowski, MP Garcia, E Gburek, T George, N Gulbrandsen, K Halliwell, C Hamblen, J Hauer, M Henderson, C Hofman, DJ Hollis, RS Holynski, R Holzman, B Iordanova, A Johnson, E Kane, JL Khan, N Kulinich, P Kuo, CM Lin, WT Manly, S Mignerey, AC Nouicer, R Olszewski, A Pak, R Reed, C Roland, C Roland, G Sagerer, J Seals, H Sedykh, I Smith, CE Stankiewicz, MA Steinberg, P Stephans, GSF Sukhanov, A Tonjes, MB Trzupek, A Vale, C van Nieuwenhuizen, GJ Vaurynovich, SS Verdier, R Veres, GI Wenger, E Wolfs, FLH Wosiek, B Wozniak, K Wyslouch, B AF Iordanova, A Back, BB Baker, MD Ballintijn, M Barton, DS Betts, RR Bickley, AA Bindel, R Busza, W Carroll, A Chai, Z Decowski, MP Garcia, E Gburek, T George, N Gulbrandsen, K Halliwell, C Hamblen, J Hauer, M Henderson, C Hofman, DJ Hollis, RS Holynski, R Holzman, B Iordanova, A Johnson, E Kane, JL Khan, N Kulinich, P Kuo, CM Lin, WT Manly, S Mignerey, AC Nouicer, R Olszewski, A Pak, R Reed, C Roland, C Roland, G Sagerer, J Seals, H Sedykh, I Smith, CE Stankiewicz, MA Steinberg, P Stephans, GSF Sukhanov, A Tonjes, MB Trzupek, A Vale, C van Nieuwenhuizen, GJ Vaurynovich, SS Verdier, R Veres, GI Wenger, E Wolfs, FLH Wosiek, B Wozniak, K Wyslouch, B CA PHOBOS collaboration BE Fini, RA Ghidini, B Lenti, V Virgili, T TI Measuring mid-rapidity multiplicity in PHOBOS SO FOCUS ON MULTIPLICITY: INTERNATIONAL WORKSHOP ON PARTICLE MULTIPLICITY IN RELATIVISTIC HEAVY ION COLLISIONS SE Journal of Physics Conference Series LA English DT Proceedings Paper CT International Workshop on Particle Multiplicity in Relativistic Heavy Ion Collisions CY JUN 17-19, 2004 CL Bari, ITALY ID PARTICLE-PRODUCTION; COLLISIONS; DISTRIBUTIONS; ENERGY AB Several techniques have been developed by PHOBOS for measuring the multiplicity of charged particles produced in Au + Au collisions. We will discuss one of these techniques (the 'Tracklet' method) which utilizes two-hit tracks which intersect at the reconstructed collision vertex position. The physics that comes from these measurements can give valuable insight into the underlying mechanisms of particle production over a center of mass energy range of root(NN)-N-s = 19.6 GeV to the maximum RHIC energy of root(NN)-N-s = 200 GeV. C1 Argonne Natl Lab, Argonne, IL 60439 USA. RP Iordanova, A (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. EM aiorda1@uic.edu OI Holzman, Burt/0000-0001-5235-6314 NR 13 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2005 VL 5 BP 97 EP 104 DI 10.1088/1742-6596/5/1/009 PG 8 WC Physics, Particles & Fields SC Physics GA BCE15 UT WOS:000228818000009 ER PT B AU Dixon, KR Lippitt, CE Forsythe, JC AF Dixon, KR Lippitt, CE Forsythe, JC BE Schmorrow, DD TI Modeling human recognition of vehicle-driving situations as a supervised machine learning task SO Foundations of Augmented Cognition, Vol 11 LA English DT Proceedings Paper CT 1st International Conference on Augmented Cognition held in Conjunction with the 11th International Conference on Human-Computer Interaction CY JUL 22-27, 2005 CL Las Vegas, NV AB A classification system is developed to identify driving situations from labeled examples of previous occurrences. The purpose of the classifier is to provide physical context to a separate system that mitigates unnecessary distractions, allowing the driver to maintain focus during periods of high difficulty. While watching videos of driving, we asked different users to indicate their perceptions of the current situation. We then trained a classifier to emulate the human recognition of driving situations using the Sandia Cognitive Framework. In unstructured conditions, such as driving in urban areas and the German autobahn, the classifier was able to correctly predict human perceptions of driving situations over 95% of the time. This paper focuses on the learning algorithms used to train the driving-situation classifier. Future work will reduce the human efforts needed to train the system. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 15 TC 0 Z9 0 U1 0 U2 1 PU LAWRENCE ERLBAUM ASSOC PUBL PI MAHWAH PA 10 INDUSTRIAL AVE, MAHWAH, NJ 07430 USA BN 0-8058-5806-7 PY 2005 BP 537 EP 543 PG 7 WC Computer Science, Cybernetics; Ergonomics; Psychology, Experimental SC Computer Science; Engineering; Psychology GA BDJ67 UT WOS:000233848700071 ER PT B AU Bauer, T AF Bauer, T BE Schmorrow, DD TI Automated context modeling through text analysis SO Foundations of Augmented Cognition, Vol 11 LA English DT Proceedings Paper CT 1st International Conference on Augmented Cognition held in Conjunction with the 11th International Conference on Human-Computer Interaction CY JUL 22-27, 2005 CL Las Vegas, NV C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU LAWRENCE ERLBAUM ASSOC PUBL PI MAHWAH PA 10 INDUSTRIAL AVE, MAHWAH, NJ 07430 USA BN 0-8058-5806-7 PY 2005 BP 544 EP 545 PG 2 WC Computer Science, Cybernetics; Ergonomics; Psychology, Experimental SC Computer Science; Engineering; Psychology GA BDJ67 UT WOS:000233848700072 ER PT B AU Forsythe, C AF Forsythe, C BE Schmorrow, DD TI Context modeling for Augmented Cognition SO Foundations of Augmented Cognition, Vol 11 LA English DT Proceedings Paper CT 1st International Conference on Augmented Cognition held in Conjunction with the 11th International Conference on Human-Computer Interaction CY JUL 22-27, 2005 CL Las Vegas, NV C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU LAWRENCE ERLBAUM ASSOC PUBL PI MAHWAH PA 10 INDUSTRIAL AVE, MAHWAH, NJ 07430 USA BN 0-8058-5806-7 PY 2005 BP 546 EP 547 PG 2 WC Computer Science, Cybernetics; Ergonomics; Psychology, Experimental SC Computer Science; Engineering; Psychology GA BDJ67 UT WOS:000233848700073 ER PT B AU Kuchar, OA Reyes-Spindola, J Benaroch, M AF Kuchar, OA Reyes-Spindola, J Benaroch, M BE Schmorrow, DD TI Augmented cognition for bioinformatics problem solving SO Foundations of Augmented Cognition, Vol 11 LA English DT Proceedings Paper CT 1st International Conference on Augmented Cognition held in Conjunction with the 11th International Conference on Human-Computer Interaction CY JUL 22-27, 2005 CL Las Vegas, NV ID BIOLOGY AB We describe a new computational cognitive model that has been developed for solving complex problems in bioinformatics. This model addresses bottlenecks in the information processing stages inherent in the bioinformatics domain due to the complex nature of both the volume and type of data and the knowledge required in solving these problems. There is a restriction on the amount of mental tasks a bioinformatician can handle when solving biology problems. Bioinformaticians are overwhelmed at the amount of fluctuating knowledge, data, and tools available in solving problems, but to create an intelligent system to aid in this problem-solving task is difficult because of the constant flux of data and knowledge; thus, bioinformatics poses challenges to intelligent systems and a new model needs to be created to handle such problem-solving issues. To create a problem-solving system for such an environment, one needs to consider the scientists and their environment, in order to determine how humans can function in such conditions. This paper describes our experiences in developing a complex cognitive system to aid biologists in knowledge discovery. We describe the problem domain, evolution of our cognitive model, the model itself, how this model relates to current literature, and summarize our ongoing research efforts. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. NR 20 TC 0 Z9 0 U1 0 U2 1 PU LAWRENCE ERLBAUM ASSOC PUBL PI MAHWAH PA 10 INDUSTRIAL AVE, MAHWAH, NJ 07430 USA BN 0-8058-5806-7 PY 2005 BP 1132 EP 1141 PG 10 WC Computer Science, Cybernetics; Ergonomics; Psychology, Experimental SC Computer Science; Engineering; Psychology GA BDJ67 UT WOS:000233848700144 ER PT J AU Bigelow, H AF Bigelow, H TI Endogenously nitrated proteins in mouse brain: Possible links to neurodegenerative disease. SO FREE RADICAL BIOLOGY AND MEDICINE LA English DT Meeting Abstract CT 12th Annual Meeting Society-for-Free-Radical-Biology-and-Medicine CY NOV 16-20, 2005 CL Austin, TX SP Soc Free Rad Biol & Med C1 Pacific NW Natl Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0891-5849 J9 FREE RADICAL BIO MED JI Free Radic. Biol. Med. PY 2005 VL 39 SU 1 BP S121 EP S122 PG 2 WC Biochemistry & Molecular Biology; Endocrinology & Metabolism SC Biochemistry & Molecular Biology; Endocrinology & Metabolism GA 985VL UT WOS:000233406700345 ER PT J AU Londono, M Knyushko, T Stenoien, D Bigelow, D AF Londono, M Knyushko, T Stenoien, D Bigelow, D TI Differentiated C2C12 myotubes exhibit robust recovery from nitrative stress SO FREE RADICAL BIOLOGY AND MEDICINE LA English DT Meeting Abstract CT 12th Annual Meeting Society-for-Free-Radical-Biology-and-Medicine CY NOV 16-20, 2005 CL Austin, TX SP Soc Free Rad Biol & Med C1 Pacific NW Natl Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0891-5849 J9 FREE RADICAL BIO MED JI Free Radic. Biol. Med. PY 2005 VL 39 SU 1 BP S125 EP S125 PG 1 WC Biochemistry & Molecular Biology; Endocrinology & Metabolism SC Biochemistry & Molecular Biology; Endocrinology & Metabolism GA 985VL UT WOS:000233406700358 ER PT J AU Sarna, T Zielonka, J Roberts, J Wishart, J Kalyanaraman, B AF Sarna, T Zielonka, J Roberts, J Wishart, J Kalyanaraman, B TI Pulse radiolysis measurements of the rate constants between hydroethidine and superoxide SO FREE RADICAL BIOLOGY AND MEDICINE LA English DT Meeting Abstract CT 12th Annual Meeting Society-for-Free-Radical-Biology-and-Medicine CY NOV 16-20, 2005 CL Austin, TX SP Soc Free Rad Biol & Med C1 Jagiellonian Univ, PL-31007 Krakow, Poland. Med Coll Wisconsin, Milwaukee, WI 53226 USA. Fordham Univ, New York, NY 10023 USA. Brookhaven Natl Lab, Upton, NY 11973 USA. RI Zielonka, Jacek/N-9546-2014 OI Zielonka, Jacek/0000-0002-2524-0145 NR 0 TC 0 Z9 0 U1 1 U2 1 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0891-5849 J9 FREE RADICAL BIO MED JI Free Radic. Biol. Med. PY 2005 VL 39 SU 1 BP S114 EP S114 PG 1 WC Biochemistry & Molecular Biology; Endocrinology & Metabolism SC Biochemistry & Molecular Biology; Endocrinology & Metabolism GA 985VL UT WOS:000233406700329 ER PT S AU Han, LD Chin, SM Franzese, O Hwang, HL AF Han, LD Chin, SM Franzese, O Hwang, HL GP TRB TI Estimating the impact of pickup- and delivery-related illegal parking activities on traffic SO FREIGHT ANAYLSIS, EVALUATION, AND MODELING: 2005 THOMAS B. DEEN DISTINGUISHED LECTURE SE TRANSPORTATION RESEARCH RECORD LA English DT Article; Proceedings Paper CT 84th Annual Meeting of the Transportation-Research-Board CY JAN 09-13, 2005 CL Washington, DC SP US Dept Transportat, US Fed Aviat Adm, US Fed Highway Adm, US Fed Motor Carrier Safety Adm, US Fed Railroad Adm, US Fed Transit Adm, US Natl Highway Traff Safety Adm, US Res & Innovat Technol Adm, NASA, USA Corps Engineers, US Coast Guard, US DOE, US EPA, Transportat Res Board, Transportat Dept 50 States, Puerto Rico & District Columbia AB Illegal parking of delivery trucks used for pickup and delivery (PUD) reduces traffic capacity and causes delays. A geographically based combinatorial model was developed to estimate the extent of capacity losses and subsequent delays. The model uses a geographically based inference engine to extract data from several large-scale databases and process the data. These data are presented and compared with data from other temporary loss-of-capacity events. Because only weekday and daytime activities were studied, the resulting estimate of the national PUD effect is somewhat conservative. C1 Univ Tennessee, Dept Civil & Environm Engn, Knoxville, TN 37996 USA. Natl Transportat Res Ctr, Ctr Transportat Anal, Oak Ridge Natl Lab, Knoxville, TN 37932 USA. RP Han, LD (reprint author), Univ Tennessee, Dept Civil & Environm Engn, 112 Perkins Hall, Knoxville, TN 37996 USA. NR 10 TC 9 Z9 9 U1 1 U2 3 PU TRANSPORTATION RESEARCH BOARD NATL RESEARCH COUNCIL PI WASHINGTON PA 500 FIFTH ST, NW, WASHINGTON, DC 20001 USA SN 0361-1981 BN 0-309-09378-3 J9 TRANSPORT RES REC PY 2005 IS 1906 BP 49 EP 55 PG 7 WC Engineering, Civil; Transportation; Transportation Science & Technology SC Engineering; Transportation GA BDM36 UT WOS:000234265600006 ER PT S AU Binns, J Dech, F McCrory, M Papka, ME Silverstein, JC Stevens, R AF Binns, Justin Dech, Fred McCrory, Matthew Papka, Michael E. Silverstein, Jonathan C. Stevens, Rick BE Solomonides, T McClatchey, R TI Developing a Distributed Collaborative Radiological Visualization Application SO FROM GRID TO HEALTHGRID SE Studies in Health Technology and Informatics LA English DT Proceedings Paper CT 3rd Healthgrid Conference CY APR 07-09, 2005 CL Oxford, ENGLAND SP Int Soc Anesthesia Res AB Leveraging the advances of today's commodity graphics hardware, adoption of community proven collaboration technology, and the use of standard Web and Grid technologies a flexible system is designed to enable the construction of a distributed collaborative radiological visualization application. The system builds from a prototype application as well as requirements gathered from users. Finally constraints on the system are evaluated to complete the design process. C1 [Binns, Justin; McCrory, Matthew; Papka, Michael E.; Stevens, Rick] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. RP Binns, J (reprint author), Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. FU NLM NIH HHS [N01-LM-3-3508] NR 10 TC 4 Z9 4 U1 0 U2 0 PU I O S PRESS PI AMSTERDAM PA NIEUWE HEMWEG 6B, 1013 BG AMSTERDAM, NETHERLANDS SN 0926-9630 BN 978-1-58603-510-5 J9 ST HEAL T PY 2005 VL 112 BP 70 EP 79 PG 10 WC Computer Science, Interdisciplinary Applications; Medical Informatics SC Computer Science; Medical Informatics GA BOD25 UT WOS:000276262400007 PM 15923717 ER PT B AU Kolb, EW Skinner, D Bozza, C Oswald, M Gripaios, IM Balbinot, R Krotov, D d'Enterria, D Dainese, A Cerri, A Raggi, M Sykora, T AF Kolb, EW Skinner, D Bozza, C Oswald, M Gripaios, IM Balbinot, R Krotov, D d'Enterria, D Dainese, A Cerri, A Raggi, M Sykora, T BE Zichichi, A TI Inflation, dark matter, dark energy SO FROM QUARKS TO BLACK HOLES: PROGRESS IN UNDERSTANDING THE LOGIC OF NATURE SE Subnuclear Series LA English DT Proceedings Paper CT 41st Course of the International School of Subnuclear Physics CY SEP, 2003 CL Erice, ITALY SP Acad Sci Estonia, Acad Sci ID UNIVERSE AB Remarkable 20th-century cosmological discoveries and theoretical ideas led to the development of the present cosmological "standard model." In this lecture I will focus on one of the more recent ideas that may now be regarded as part of the framework of the standard big-bang model; namely, that structure in the universe results from the growth of small seed density fluctuations produced during the inflationary universe. In order to complete this picture, I will also discuss the idea that the present mass density is dominated by dark matter and that there is now a preponderance of dark energy. C1 Fermilab Natl Accelerator Lab, Fermilab Astrophys Ctr, Batavia, IL 60510 USA. RP Kolb, EW (reprint author), Fermilab Natl Accelerator Lab, Fermilab Astrophys Ctr, POB 500, Batavia, IL 60510 USA. NR 11 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 981-256-375-X J9 SUBNUCL SER PY 2005 VL 41 BP 133 EP 147 DI 10.1142/9789812701794_0006 PG 15 WC Physics, Multidisciplinary; Physics, Particles & Fields SC Physics GA BDD80 UT WOS:000232971200006 ER PT B AU Ludlam, T AF Ludlam, T BE Zichichi, A TI Highlights from BNL new phenomena at RHIC SO FROM QUARKS TO BLACK HOLES: PROGRESS IN UNDERSTANDING THE LOGIC OF NATURE SE Subnuclear Series LA English DT Proceedings Paper CT 41st Course of the International School of Subnuclear Physics CY SEP, 2003 CL Erice, ITALY SP Acad Sci Estonia, Acad Sci C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Brookhaven Natl Lab, Upton, NY 11973 USA. NR 19 TC 0 Z9 0 U1 0 U2 1 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 981-256-375-X J9 SUBNUCL SER PY 2005 VL 41 BP 223 EP 231 DI 10.1142/9789812701794_0011 PG 9 WC Physics, Multidisciplinary; Physics, Particles & Fields SC Physics GA BDD80 UT WOS:000232971200011 ER PT B AU Giorgi, MA Laycock, P Menges, W Cerri, A Shekhovtsova, O Otiougova, P Rotaev, M Lysov, V Dainese, A Ting, W AF Giorgi, MA Laycock, P Menges, W Cerri, A Shekhovtsova, O Otiougova, P Rotaev, M Lysov, V Dainese, A Ting, W BE Zichichi, A TI Highlights from BABAR SO FROM QUARKS TO BLACK HOLES: PROGRESS IN UNDERSTANDING THE LOGIC OF NATURE SE Subnuclear Series LA English DT Proceedings Paper CT 41st Course of the International School of Subnuclear Physics CY SEP, 2003 CL Erice, ITALY SP Acad Sci Estonia, Acad Sci ID DECAYS AB The scientific program of the Experiment BABAR that is taking data at PEPII e(+)e(-) asymmetric B-Factory of SLAC is presented together with the most relevant results achieved since the startup of the operations in 1999. The total sample of data collected contains a number of B events in excess of 130 millions. Beyond CP violation results, new charm state discovery is also presented. C1 Stanford Linear Accelerator Ctr, Menlo Pk, CA 94025 USA. RP Giorgi, MA (reprint author), Stanford Linear Accelerator Ctr, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA. NR 25 TC 0 Z9 0 U1 0 U2 1 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 981-256-375-X J9 SUBNUCL SER PY 2005 VL 41 BP 232 EP 276 DI 10.1142/9789812701794_0012 PG 45 WC Physics, Multidisciplinary; Physics, Particles & Fields SC Physics GA BDD80 UT WOS:000232971200012 ER PT B AU Parke, S Haidt, D Baldini, R Galletly, D Cifarelli, L Menges, W Zichichi, A t' Hooft, G AF Parke, S Haidt, D Baldini, R Galletly, D Cifarelli, L Menges, W Zichichi, A t' Hooft, G BE Zichichi, A TI Highlights from Fermilab SO From Quarks to Black Holes: Progress in Understanding the Logic of Nature SE SUBNUCLEAR SERIES LA English DT Proceedings Paper CT 41st Course of the International School of Subnuclear Physics CY SEP, 2003 CL Erice, ITALY SP Acad Sci Estonia, Acad Sci AB The Fermilab High Energy physics program is a very diverse, program with many different type of experiments being performed. in this talk I covered recent results from the collider progam as well as the neutrino program. I also discussed future experments. C1 Fermilab Natl Accelerator Lab, Dept Theoret Phys, Batavia, IL 60510 USA. RP Parke, S (reprint author), Fermilab Natl Accelerator Lab, Dept Theoret Phys, POB 500, Batavia, IL 60510 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 981-256-375-X J9 SUBNUCL SER PY 2005 VL 41 BP 277 EP 364 PG 88 WC Physics, Multidisciplinary; Physics, Particles & Fields SC Physics GA BDD80 UT WOS:000232971200013 ER PT J AU Lin, YH Yantasee, W Wang, J AF Lin, YH Yantasee, W Wang, J TI Carbon nanotubes (CNTs) for the development of electrochemical biosensors SO FRONTIERS IN BIOSCIENCE LA English DT Article DE carbon nanotubes; amperometric biosensors; hydrogen peroxide; NADH; oxidase; dehydrogenase; enzymes; alcohol; glucose; Nafion; organophosphorous compounds; alcohol; homocysteine; thiols; review ID MODIFIED ELECTRODE; GLUCOSE BIOSENSOR; ELECTROCATALYTIC OXIDATION; AMPEROMETRIC BIOSENSORS; NANOELECTRODE ENSEMBLES; PARAOXON DETECTION; SITE DENSITY; LARGE ARRAYS; ENZYME; OXIDASE AB Carbon nanotube (CNT) is a very attractive material for the development of biosensors because of its capability to provide strong electrocatalytic activity and minimize surface fouling of the sensors. This article reviews our recent developments of oxidase- and dehydrogenase-amperometric biosensors based on the immobilization of CNTs, the co-immobilization of enzymes on the CNTs/Nafion or the CNT/Teflon composite materials, or the attachment of enzymes on the controlled-density aligned CNT-nanoelectrode arrays. The excellent electrocatalytic activities of the CNTs on the redox reactions of hydrogen peroxide, nicotinamide adenine dinucleotide ( NADH), and homocysteine have been demonstrated. Successful applications of the CNT-based biosensors reviewed herein include the low-potential detections of glucose, organophosphorus compounds, and alcohol. C1 Pacific NW Natl Lab, Richland, WA 99352 USA. New Mexico State Univ, Dept Biochem & Chem, Las Cruces, NM 88003 USA. RP Lin, YH (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. EM yuehe.lin@pnl.gov RI Wang, Joseph/C-6175-2011; Lin, Yuehe/D-9762-2011 OI Lin, Yuehe/0000-0003-3791-7587 NR 88 TC 108 Z9 112 U1 0 U2 54 PU FRONTIERS IN BIOSCIENCE INC PI MANHASSET PA C/O NORTH SHORE UNIV HOSPITAL, BIOMEDICAL RESEARCH CENTER, 350 COMMUNITY DR, MANHASSET, NY 11030 USA SN 1093-9946 J9 FRONT BIOSCI JI Front. Biosci. PD JAN 1 PY 2005 VL 10 BP 492 EP 505 DI 10.2741/1545 PG 14 WC Biochemistry & Molecular Biology; Cell Biology SC Biochemistry & Molecular Biology; Cell Biology GA 970OK UT WOS:000232319300046 PM 15574386 ER PT J AU Gaulin, BD Gardner, JS AF Gaulin, Bruce D. Gardner, Jason S. BE Diep, HT TI EXPERIMENTAL STUDIES OF FRUSTRATED PYROCHLORE ANTIFERROMAGNETS SO FRUSTRATED SPIN SYSTEMS LA English DT Article; Book Chapter ID SPIN-GLASS PYROCHLORE; NEUTRON-SCATTERING; CRYSTAL-GROWTH; LIQUID-STATE; TRANSITION; TB2TI2O7; Y2MO2O7; OXIDE; DISORDER; SUPERCONDUCTIVITY AB Much recent experimental progress has been made in the study of magnetic materials made up of antiferromagnetically-coupled magnetic moments residing on networks of corner-sharing tetrahedra. Such networks of magnetic moments display phenomena known broadly as geometric frustration. They are found in nature in a variety of cubic pyrochlore, spinel and Laves phase materials, with the magnetic moments arising from either rare earth or transition metal electrons. Typically, the rare earth moments are relatively large and are only weakly coupled by exchange, such that the competition between antiferromagnetic exchange and dipolar interactions is important. Antiferromagnetic exchange interactions are stronger in transition metal-based materials, and the manifestation of geometrical frustration is different. This review focusses on experimental progress in this area from the last ten years primarily due to neutron scattering studies. C1 [Gaulin, Bruce D.] McMaster Univ, Dept Phys & Astron, Canadian Inst Adv Res, Hamilton, ON L8S 4M1, Canada. [Gardner, Jason S.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. [Gardner, Jason S.] NIST, NIST Ctr Neutron Res, Gaithersburg, MD 20899 USA. RP Gaulin, BD (reprint author), McMaster Univ, Dept Phys & Astron, Canadian Inst Adv Res, Hamilton, ON L8S 4M1, Canada. EM gaulin@mcmaster.ca NR 60 TC 1 Z9 1 U1 0 U2 1 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 978-981-256-781-9 PY 2005 BP 457 EP 489 DI 10.1142/9789812567819_0008 D2 10.1142/9789812567819 PG 33 WC Physics, Multidisciplinary; Physics, Particles & Fields SC Physics GA BWC85 UT WOS:000293509700009 ER PT J AU Maroto-Valer, MM Zhang, YZ Granite, EJ Tang, Z Pennline, HW AF Maroto-Valer, MM Zhang, YZ Granite, EJ Tang, Z Pennline, HW TI Effect of porous structure and surface functionality on the mercury capacity of a fly ash carbon and its activated sample SO FUEL LA English DT Article DE fly ash carbon; porosity; surface functionality; mercury capture ID ELEMENTAL MERCURY; FLUE-GAS; ADSORPTION; SORBENTS; CAPTURE AB The effect of porous structure and surface functionality on the mercury capacity of a fly ash carbon and its activated sample has been investigated. The samples were tested for mercury adsorption using a fixed-bed with a simulated flue gas. The activated fly ash carbon sample has lower mercury capacity than its precursor fly ash carbon (0.23 vs. 1.85 mg/g), although its surface area is around 15 times larger, 863 vs. 53 m(2)/g. It was found that oxygen functionality and the presence of halogen species on the surface of fly ash carbons may promote mercury adsorption, while the surface area does not seem to have a significant effect on their mercury capacity. (C) 2004 Elsevier Ltd. All rights reserved. C1 Penn State Univ, Energy Inst, University Pk, PA 16802 USA. Penn State Univ, Dept Energy & Geoenvironm Engn, University Pk, PA 16802 USA. US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. RP Maroto-Valer, MM (reprint author), Penn State Univ, Energy Inst, 405 Acad Activities, University Pk, PA 16802 USA. EM mmm23@psu.edu RI Maroto-Valer, Mercedes/F-5016-2014 OI Maroto-Valer, Mercedes/0000-0003-1643-2863 NR 19 TC 48 Z9 59 U1 4 U2 18 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0016-2361 J9 FUEL JI Fuel PD JAN PY 2005 VL 84 IS 1 BP 105 EP 108 DI 10.1016/j.fuel.2004.07.005 PG 4 WC Energy & Fuels; Engineering, Chemical SC Energy & Fuels; Engineering GA 868WO UT WOS:000224944000013 ER PT B AU Kosacki, I AF Kosacki, I BE Sammes, N Smirnova, A Vasylyev, O TI Nanoscaled oxide thin films for energy conversion SO Fuel Cell Technologies: State and Perspectives SE NATO SCIENCE SERIES, SERIES II: MATHEMATICS, PHYSICS AND CHEMISTRY LA English DT Proceedings Paper CT NATO Advanced Research Workshop on Fuel Cell Technologies CY JUN 06-10, 2004 CL Kiev, UKRAINE SP NATO, European Off Aerosp Res & Dev, N Carolina A & T State Univ, Ctr Adv Mat & Smart Structures, Connecticut Global Fuel Cell Ctr, Univ Connecticut, Frantcevych Inst Problem Mat Sci, Zirconia Ukraine Ltd ID MEYER-NELDEL RULE; ELECTRICAL-CONDUCTIVITY; STABILIZED ZIRCONIA; TRANSPORT; DEFECT; MODEL AB This paper discusses the electrical transport properties of oxygen conductors and how they may be optimized by controlling their microstructure or thickness in the nanometer range. The parameters determining the ionic conductivity in cubic stabilized zirconia are reviewed and the case for enhanced ionic conductivity in yttria, (YSZ) and scandia (ScSZ) stabilized zirconia is considered. The obtained results show that properties of nanoscaled oxides can be greatly enhanced. This is attributed to a significant contribution from grain boundary/interface conductivity when the grain size or the film thickness is decreased below 100nm. These observations can have important implications for the development of nanostructured electrochemical devices with enhanced performance. C1 Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37830 USA. RP Kosacki, I (reprint author), Oak Ridge Natl Lab, Div Met & Ceram, POB 2008, Oak Ridge, TN 37830 USA. NR 37 TC 4 Z9 4 U1 1 U2 2 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 1-4020-3496-2 J9 NATO SCI SER II MATH PY 2005 VL 202 BP 395 EP 416 PG 22 WC Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary; Materials Science, Characterization & Testing SC Electrochemistry; Energy & Fuels; Materials Science GA BDR96 UT WOS:000235157200044 ER PT J AU Biro, LP Mark, GI Koos, AA Horvath, ZE Szabo, A Fonseca, A Nagy, JB Colomer, JF Lambin, P Meunier, V Charlier, JC Bedoya-Martinez, ON Hernandez, E AF Biro, LP Mark, GI Koos, AA Horvath, ZE Szabo, A Fonseca, A Nagy, JB Colomer, JF Lambin, P Meunier, V Charlier, JC Bedoya-Martinez, ON Hernandez, E TI Regularly curved carbon nanotubes SO FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES LA English DT Article; Proceedings Paper CT Symposium on Advanced Multifunctional Nanocarbon Materials and Nanosystems held at the E-MRS Spring Meeting CY MAY 24-28, 2004 CL Strasbourg, FRANCE SP E-MRS DE carbon nanotubes; chemical vapor deposition; helices; supported catalysts ID TUBULAR CARBON; MICROSCOPY AB The increasing number of reports on regularly curved carbon nanotube-type architectures makes it increasingly important to understand the structure of these nano-objects, to predict their properties, and to get insight in the way they form. The present work attempts to explore some properties of regularly curved carbon nanotube by combining structural modeling, mechanical calculations, and experimental high-resolution transmission electron microscopy (HRTEM) data. C1 Tech Phys Res Inst & Mat Sci, Budapest, Hungary. Fac Univ Notre Dame Paix, B-5000 Namur, Belgium. Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN USA. Catholic Univ Louvain, Lab Phys Chim & Phys Mat, Louvain, Belgium. Univ Autonoma Barcelona, CSIC, Inst Ciencia Mat Barcelona, Barcelona, Spain. RP Tech Phys Res Inst & Mat Sci, Budapest, Hungary. EM antonio.fonseca@fundp.ac.be RI Hernandez, Eduardo R. /B-1285-2008; Biro, Laszlo/A-3057-2010; Horvath, Zsolt/A-6119-2011; Meunier, Vincent/F-9391-2010; Koos, Antal/A-5865-2011; Bedoya Martinez, Natalia/G-8477-2016; OI Hernandez, Eduardo R. /0000-0002-1164-2856; Meunier, Vincent/0000-0002-7013-179X; Koos, Antal/0000-0003-0563-948X; Bedoya Martinez, Natalia/0000-0001-9824-6129; Lambin, Philippe/0000-0001-8051-042X; Biro, Laszlo Peter/0000-0001-7261-0420 NR 26 TC 4 Z9 4 U1 0 U2 3 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA SN 1536-383X EI 1536-4046 J9 FULLER NANOTUB CAR N JI Fuller. Nanotub. Carbon Nanostruct. PY 2005 VL 13 SU 1 BP 523 EP 533 DI 10.1081/FST-200039482 PG 11 WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Atomic, Molecular & Chemical SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA 920VL UT WOS:000228718200061 ER PT J AU Gould, N Thorpe, MR Koroleva, O Minchin, PEH AF Gould, N Thorpe, MR Koroleva, O Minchin, PEH TI Phloem hydrostatic pressure relates to solute loading rate: a direct test of the Munch hypothesis SO FUNCTIONAL PLANT BIOLOGY LA English DT Article DE anoxia; aphid stylectomy; Munch hypothesis; phloem loading; phloem pressure probe ID TRANSPORT; BARLEY; CELLS AB According to the Munch hypothesis, a flow of solution through the sieve tubes is driven by a hydrostatic pressure difference between the source ( or collection) phloem and the sink ( or release) phloem. A high hydrostatic pressure is maintained in the collection phloem by the active uptake of sugar and other solutes, with a concomitant inflow of water. A lower pressure is maintained in the release phloem through solute unloading. In this work we directly test the role of solute uptake in creating the hydrostatic pressure associated with phloem flow. Solute loading into the phloem of mature leaves of barley and sow thistle was reduced by replacing the air supply with nitrogen gas. Hydrostatic pressure in adjacent sieve elements was measured with a sieve-element pressure probe, a cell pressure probe glued to the exuding stylet of aphids that had been feeding from the phloem. Sieve element sap was sampled by aphid stylectomy; sap osmotic pressure was determined by picolitre osmometry and its sugar concentration by enzyme-linked fluorescence assays. Samples were taken with a time resolution of similar to 2 - 3 min. In accordance with Munch's proposal a drop in osmotic and hydrostatic pressure in the source phloem following treatment of the source leaf with N(2) was observed. A decrease in sugar concentration was the major contributor to the change in osmotic pressure. By observing these variables at a time resolution of minutes we have direct observation of the predictions of Munch. C1 Univ Waikato, Dept Biol, Hamilton, New Zealand. Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. John Innes Ctr Plant Sci Res, Norwich NR4 7UH, Norfolk, England. Forschungszentrum Julich, D-52425 Julich, Germany. RP Gould, N (reprint author), Ruakura Agr Res Ctr, HortRes, Private Bag 3123, Hamilton, New Zealand. EM ngould@hortresearch.co.nz RI Minchin, Peter/G-1187-2010; Gould, Nick/L-2362-2016 OI Gould, Nick/0000-0003-0209-316X NR 18 TC 39 Z9 39 U1 1 U2 16 PU CSIRO PUBLISHING PI COLLINGWOOD PA 150 OXFORD ST, PO BOX 1139, COLLINGWOOD, VICTORIA 3066, AUSTRALIA SN 1445-4408 J9 FUNCT PLANT BIOL JI Funct. Plant Biol. PY 2005 VL 32 IS 11 BP 1019 EP 1026 DI 10.1071/FP05036 PG 8 WC Plant Sciences SC Plant Sciences GA 978EO UT WOS:000232856600005 ER PT J AU McQueen, JC Minchin, PEH Thorpe, MR Silvester, WB AF McQueen, JC Minchin, PEH Thorpe, MR Silvester, WB TI Short-term storage of carbohydrate in stem tissue of apple (Malus domestica), a woody perennial: evidence for involvement of the apoplast SO FUNCTIONAL PLANT BIOLOGY LA English DT Article DE apoplast; apple; (11)C; phloem loading; retrieval; stem buffering; sugar transport; transport phloem ID SORBITOL TRANSPORTERS; PHLOEM; TRANSLOCATION; PHOTOSYNTHATE; PHOTOPERIOD; INHIBITION; MECHANISM; PATHWAY; LEAVES AB This work investigates the pathway and mechanism for lateral retrieval of carbohydrate into the transport phloem of apple stems ( Malus domestica Borkh.). A heat exchanger was set up on the stem, allowing rapid chilling and subsequent re-warming of stem segments while the time course of axial transport of (11)C-labelled photoassimilate was measured at a position similar to 65 mm downstream of the heat exchanger. Whenever axial transport was blocked by a sudden chill at the heat exchanger, transport 65 mm downstream from the blockage immediately slowed but did not stop, showing that there was retrieval of solutes into the pathway ( buffering), within that 65 mm of stem, to help maintain the axial flow. Use of PCMBS, an inhibitor of sugar transporters, showed that the buffering included retrieval of sugar from the apoplast. We concluded that in apple, apoplastic sugar in stem tissue can buffer phloem transport during short-term changes in supply and demand for carbohydrates. Buffering was stronger when mobile reserves in the stem were higher, for example late in the photoperiod, or if carbohydrate demand in the terminal sink was increased. We also suggest that the concentration of sugars in the apoplast is a regulator of carbohydrate storage and re-mobilisation. C1 Univ Waikato, Dept Biol, Hamilton, New Zealand. Ruakura Res Ctr, HortRes, Hamilton, New Zealand. Forschungszentrum Julich, D-52425 Julich, Germany. Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. RP McQueen, JC (reprint author), Univ Waikato, Dept Biol, Private Bag 3105, Hamilton, New Zealand. EM mwatton@ihug.co.nz RI Minchin, Peter/G-1187-2010 NR 21 TC 12 Z9 12 U1 1 U2 6 PU CSIRO PUBLISHING PI COLLINGWOOD PA 150 OXFORD ST, PO BOX 1139, COLLINGWOOD, VICTORIA 3066, AUSTRALIA SN 1445-4408 J9 FUNCT PLANT BIOL JI Funct. Plant Biol. PY 2005 VL 32 IS 11 BP 1027 EP 1031 DI 10.1071/FP05082 PG 5 WC Plant Sciences SC Plant Sciences GA 978EO UT WOS:000232856600006 ER PT S AU Pavon, J Caillate, M Jimenez-Pique, E Anglada, M Lopez-Esteban, S Saiz, E Tomsia, AP AF Pavon, J Caillate, M Jimenez-Pique, E Anglada, M Lopez-Esteban, S Saiz, E Tomsia, AP BE VanderBiest, O Gasik, M Vleugels, J TI Micro-structural characterization and stress-corrosion cracking behavior of a FGM glass-based coating on Ti6Al4V for biomedical applications SO FUNCTIONALLY GRADED MATERIALS VIII SE MATERIALS SCIENCE FORUM LA English DT Article; Proceedings Paper CT 8th International Symposium on Multifunctional and Functionally Graded Materials (FMG2004) CY JUL 11-14, 2004 CL Leuven, BELGIUM SP Royal Soc Flemish Engineers, Technol Inst, Katholieke Univ Leuven, Dept Met & Mat Engn DE glass-coating; indentation; stress-corrosion cracking; biomedical implants ID IMPLANTS AB Microstructural and stress-corrosion cracking characterization of two glass-based coatings on Ti6A14V with different SiO2 content (61% and 64% of SiO2) have been investigated in this work. These coatings belong to the SiO2-CaO-MgO-Na2O-K2O-P2O5 system and were obtained using a simple enamelling technique. They will be used as the first layer of the bioactive FGM coating. Microstructural characterization performed in the coatings by SEM shows the separation of the sintered glass particles after acid etching. The XRD integration method shows that the percentage of the crystalline phase (2.4CaO(.)0.6Na(2)O(.)P(2)O(5)) due to the partial devitrification is between 3-16 % vol. Mechanical characterization was made using Vickers and Hertzian indentation. Both coatings were sensitive to Vickers indentation subcritical crack growth with longer crack lengths for the smaller SiO2 content. This coating was also more sensitive to stress-corrosion "ring" cracking by Hertzian indentation. These two results are related with the larger residual stresses due to the thermal expansion mismatch. C1 Univ Politecn Catalunya, Dept Ciencia Mat & Ingn Met, E-08028 Barcelona, Spain. Ernest Orlando Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Pavon, J (reprint author), Univ Politecn Catalunya, Dept Ciencia Mat & Ingn Met, Avda Diagonal 647,ETSEIB, E-08028 Barcelona, Spain. EM juan.jose.pavon-palacio@upc.es; bemilio.jiemnez@upc.es; marc.j.anglada@upc.es; slopez-esteban@lbl.gov; saiz@lbl.gov; aptomsia@lbl.gov OI Jimenez-Pique, Emilio/0000-0002-6950-611X NR 14 TC 2 Z9 2 U1 1 U2 2 PU TRANS TECH PUBLICATIONS LTD PI ZURICH-UETIKON PA BRANDRAIN 6, CH-8707 ZURICH-UETIKON, SWITZERLAND SN 0255-5476 BN 0-87849-970-9 J9 MATER SCI FORUM PY 2005 VL 492-493 BP 229 EP 234 PG 6 WC Materials Science, Multidisciplinary; Materials Science, Biomaterials; Materials Science, Characterization & Testing; Materials Science, Coatings & Films SC Materials Science GA BCR97 UT WOS:000230986100038 ER PT S AU Rar, A Sohn, S Oliver, WC Goldsby, DL Tullis, TE Pharr, GM AF Rar, A Sohn, S Oliver, WC Goldsby, DL Tullis, TE Pharr, GM BE Wahl, KJ Huber, N Mann, AB Bahr, DF Cheng, YT TI On the measurement of creep by nanoindentation with continuous stiffness techniques SO Fundamentals of Nanoindentation and Nanotribology III SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on Fundamentals of Nanoindentation and Nanotribology III held at the 2004 MRS Fall Meeting CY NOV 29-DEC 03, 2004 CL Boston, MA SP MRS ID INDENTATION AB Measurement of material creep parameters by means of nanoindentation using continuous stiffness techniques avoids the problems associated with thermal drift that often plague creep measurements based on the time dependence of the indentation depth alone [1,2]. Problems with thermal drift are negligible from a practical point of view during continuous stiffness measurements because the contact stiffness can be measured over a short time period, typically less than one second, during which time the displacements due to thermal drift are minimal. Determination of the time dependence of the indentation depth from the stiffness data relies on the well-known relation between contact stiffness and the square root of the contact area. For pyramidal indenters, the true indentation contact depth must be proportional to the contact stiffness, leading to the assumption that indentation depth is also proportional to the contact stiffness. In this study, we critically examine this assumption using data obtained from experiments on a relatively soft material, epoxy, and a relatively hard material, fused quartz. The results show that just after initial load application, the change in contact area may be different than that expected from the change in indentation depth. One possible explanation for the observed behavior is examined by finite element modeling. C1 Oak Ridge Natl Lab, Met & Ceram Div, Oak Ridge, TN 37831 USA. RP Rar, A (reprint author), Oak Ridge Natl Lab, Met & Ceram Div, Oak Ridge, TN 37831 USA. NR 7 TC 10 Z9 10 U1 0 U2 4 PU MATERIALS RESEARCH SOCIETY PI WARRENDALE PA 506 KEYSTONE DRIVE, WARRENDALE, PA 15088-7563 USA SN 0272-9172 BN 1-55899-789-X J9 MATER RES SOC SYMP P PY 2005 VL 841 BP 119 EP 124 PG 6 WC Materials Science, Multidisciplinary; Mechanics; Materials Science, Characterization & Testing SC Materials Science; Mechanics GA BCI82 UT WOS:000229609400018 ER PT S AU Moody, NR Jungk, JM Kennedy, MS Prasad, SV Bahr, DF Gerberich, WW AF Moody, NR Jungk, JM Kennedy, MS Prasad, SV Bahr, DF Gerberich, WW BE Wahl, KJ Huber, N Mann, AB Bahr, DF Cheng, YT TI Mechanical properties of wear tested LIGA nickel SO Fundamentals of Nanoindentation and Nanotribology III SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on Fundamentals of Nanoindentation and Nanotribology III held at the 2004 MRS Fall Meeting CY NOV 29-DEC 03, 2004 CL Boston, MA SP MRS ID NANOINDENTATION AB Strength, friction, and wear are dominant factors in the performance and reliability of materials and devices fabricated using nickel based LIGA and silicon based MEMS technologies. However, the effects of frictional contacts and wear on the mechanical performance of microdevices are not well-defined. To address these effects on performance of LIGA nickel, we have begun a program employing nanoscratch and nanoindentation. Nanoscratch techniques were used to generate wear patterns using loads of 100, 200, 500, and 990 mu N with each load applied for 1, 2, 5, and 10 passes. Nanoindentation was then used to measure properties in each wear pattern correcting for surface roughness. The results showed a systematic increase in hardness with applied load and number of nanoscratch passes. The results also showed that the work hardening coefficient determined from indentation tests within wear patterns follows the work hardening behavior established from tensile tests, supporting use of a nanomechanics-based approach for studying mechanical properties of wear tested material. C1 Sandia Natl Labs, Livermore, CA 94550 USA. RP Moody, NR (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA. NR 7 TC 0 Z9 0 U1 0 U2 0 PU MATERIALS RESEARCH SOCIETY PI WARRENDALE PA 506 KEYSTONE DRIVE, WARRENDALE, PA 15088-7563 USA SN 0272-9172 BN 1-55899-789-X J9 MATER RES SOC SYMP P PY 2005 VL 841 BP 241 EP 246 PG 6 WC Materials Science, Multidisciplinary; Mechanics; Materials Science, Characterization & Testing SC Materials Science; Mechanics GA BCI82 UT WOS:000229609400034 ER PT J AU Brooks, JN Allain, JP Alman, DA Ruzic, DN AF Brooks, JN Allain, JP Alman, DA Ruzic, DN TI Erosion, transport, and tritium codeposition analysis of a beryllium wall tokamak SO FUSION ENGINEERING AND DESIGN LA English DT Article DE tritium codeposition; beryllium; tokamak ID PLASMA-FACING COMPONENTS; HYDROGEN ISOTOPE RETENTION; OFF LAYER TRANSPORT; PARTICLE-TRANSPORT; FUSION; DEUTERIUM; INVENTORY; MODEL; D+ AB We analyzed beryllium first wall sputtering erosion, sputtered material transport, and T/Be codeposition for a typical next-generation tokamak design-the fusion ignition research experiment (FIRE). The results should be broadly applicable to any future tokamak with a beryllium first wall. Starting with a fluid code scrapeoff layer attached plasma solution, plasma D-0 neutral fluxes to the wall and divertor are obtained from the DEGAS2 neutral transport code. The D+ ion flux to the wall is computed using both a diffusive term and a simple convective transport model. Sputtering coefficients for the beryllium wall are given by the VFTRIM-3D binary-collision code. Transport of beryllium to the divertor, plasma, and back to the wall is calculated with the WBC+ code, which tracks sputtered atom ionization and subsequent ion transport along the SOL magnetic field lines. Then, using results from a study of Be/W mixing/sputtering on the divertor, and using REDEP/WBC impurity transport code results, we estimate the divertor surface response. Finally, we compute tritium codeposition rates in Be growth regions on the wall and divertor for D-T plasma shots using surface temperature dependent D-T/Be rates and with different assumed oxygen contents. Key results are: (1) peak wall net erosion rates vary from about 0.3 mm s(-1) for diffusion-only transport to 3 nm s(-1) for diffusion plus convection, (2) T/Be codeposition rates vary from about 0.1 to 10.0 mg T s(-1) depending on the model, and (3) core plasma contamination from wall-sputtered beryllium is low in all cases (< 0.02%). Thus, based on the erosion and codeposition results, the performance of a beryllium first wall is very dependent on the plasma response, and varies from acceptable to unacceptable. (c) 2004 Elsevier B.V. All rights reserved. C1 Argonne Natl Lab, Argonne, IL 60439 USA. Univ Illinois, Urbana, IL 61801 USA. RP Brooks, JN (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. EM brooks@anl.gov OI Allain, Jean Paul/0000-0003-1348-262X NR 35 TC 7 Z9 7 U1 1 U2 8 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0920-3796 J9 FUSION ENG DES JI Fusion Eng. Des. PD JAN PY 2005 VL 72 IS 4 BP 363 EP 375 DI 10.1016/j.fusengdes.2004.10.002 PG 13 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 907DK UT WOS:000227695300004 ER PT J AU Post, RF Fowler, TK Bulmer, R Byers, J Hua, D Tung, L AF Post, RF Fowler, TK Bulmer, R Byers, J Hua, D Tung, L TI Axisymmetric tandem mirrors: Stabilization and confinement studies SO FUSION SCIENCE AND TECHNOLOGY LA English DT Article; Proceedings Paper CT 5th International Conference on Open Magnetic Systems for Plasma Confinement CY JUL 05-09, 2004 CL Novosibirsk, RUSSIA ID KINETIC STABILIZER AB The "Kinetic Stabilizer" has been proposed as a means of MHD stabilizing an axisymmetric tandem mirror system. The K-S concept is based on theoretical studies by Ryutov, confirmed experimentally in the Gas Dynamic Trap experiment in Novosibirsk. In the K-S beams of ions are directed into the end of an "expander" region outside the outer mirror of a tandem mirror. These ions, slowed, stagnated, and reflected as they move up the magnetic gradient, produce a low-density stabilizing plasma. At the Lawrence Livermore National Laboratory we have been conducting theoretical and computational studies of the K-S Tandem Mirror. These studies have employed a low-beta code written especially to analyze the beam injection/stabilization process, and a new code SYMTRAN (by Hua and Fowler) that solves the coupled radial and axial particle and energy transport in a K-S T-M. Also, a "legacy" MHD stability code, FLORA, has been upgraded and employed to benchmark the injection/stabilization code and to extend its results to high beta values. The FLORA code studies so far have confirmed the effectiveness of the K-S in stabilizing high-beta (40%) plasmas with stabilizer plasmas the peak pressures of which are several orders of magnitude smaller than those of the confined plasma. Also the SYMTRAN code has shown D-T plasma ignition from alpha particle energy deposition in T-M regimes with strong end plugging. Our studies have confirmed the viability of the K-S T-M concept with respect to MHD stability and radial and axial confinement. We are continuing these studies in order to optimize the parameters and to examine means for the stabilization of possible residual instability modes, such as drift modes and "trapped-particle" modes. These modes may in principle be controlled by tailoring the stabilizer plasma distribution and/or the radial potential distribution. In the paper the results to date of our studies are summarized and projected to scope out possible fusion-power versions of the K-S T-M. C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Post, RF (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave,L-644, Livermore, CA 94551 USA. EM post3@llnl.gov NR 17 TC 16 Z9 16 U1 0 U2 4 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60526 USA SN 1536-1055 J9 FUSION SCI TECHNOL JI Fusion Sci. Technol. PD JAN PY 2005 VL 47 IS 1T BP 49 EP 58 PG 10 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 888NG UT WOS:000226380900010 ER PT J AU Ryutov, DD AF Ryutov, DD TI Axial electron heat loss from mirror devices revisited SO FUSION SCIENCE AND TECHNOLOGY LA English DT Article; Proceedings Paper CT 5th International Conference on Open Magnetic Systems for Plasma Confinement CY JUL 05-09, 2004 CL Novosibirsk, RUSSIA ID EMISSION; SURFACE; FUSION AB An issue of the axial electron heat loss is of a significant importance for mirror-based fusion devices. This problem has been considered in a number of publications but it is still shrouded in misconceptions. In this paper we revisit it once again. We discuss the following issues: 1) Formation of the electron distribution function in the end tank at large expansion ratios; 2) The secondary emission from the end plates and the ways of suppressing it (if needed); 3) Ionization and charge exchange in the presence of neutrals in the end tanks; 4) Instabilities caused by the peculiar shape of the electron distribution function and their possible impact on the electron heat losses; 5) Electron heat losses in the pulsed mode of operation of mirror devices. C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Ryutov, DD (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. NR 12 TC 28 Z9 28 U1 0 U2 3 PU AMER NUCLEAR SOC PI LA GRANGE PK PA 555 N KENSINGTON AVE, LA GRANGE PK, IL 60526 USA SN 1536-1055 EI 1943-7641 J9 FUSION SCI TECHNOL JI Fusion Sci. Technol. PD JAN PY 2005 VL 47 IS 1T BP 148 EP 154 PG 7 WC Nuclear Science & Technology SC Nuclear Science & Technology GA 888NG UT WOS:000226380900030 ER PT J AU Kunszt, P Laure, E Stockinger, H Stockinger, K AF Kunszt, P Laure, E Stockinger, H Stockinger, K TI File-based replica management SO FUTURE GENERATION COMPUTER SYSTEMS-THE INTERNATIONAL JOURNAL OF ESCIENCE LA English DT Article DE Data Grid; replica management; replica access optimization AB Data replication is one of the best known strategies to achieve high levels of availability and fault tolerance, as well as minimal access times for large, distributed user communities using a world-wide Data Grid. In certain scientific application domains, the data volume can reach the order of several petabytes; in these domains, data replication and access optimization play an important role in the manageability and usability of the Grid. In this paper, we present the design and implementation of a replica management Grid middleware that was developed within the EDG project [European DataGrid Project (EDG), http://www.eu-egee.org] and is designed to be extensible so that user communities can adjust its detailed behavior according to their QoS requirements. (C) 2004 Elsevier B.V. All rights reserved. C1 European Org Nucl Res, CERN, CH-1211 Geneva 23, Switzerland. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP European Org Nucl Res, CERN, CH-1211 Geneva 23, Switzerland. EM peter.kunszt@cern.ch OI Stockinger, Heinz/0000-0003-4666-7719; Kunszt, Peter/0000-0003-0933-4763 NR 19 TC 31 Z9 31 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-739X EI 1872-7115 J9 FUTURE GENER COMP SY JI Futur. Gener. Comp. Syst. PD JAN 1 PY 2005 VL 21 IS 1 BP 115 EP 123 DI 10.1016/j.future.2004.09.017 PG 9 WC Computer Science, Theory & Methods SC Computer Science GA 890VT UT WOS:000226539900014 ER PT S AU Crawford, MH Allerman, AA Fischer, AJ Bogart, KHA Lee, SR Chow, WW Wieczorek, S Kaplar, RJ Kurtz, SR AF Crawford, MH Allerman, AA Fischer, AJ Bogart, KHA Lee, SR Chow, WW Wieczorek, S Kaplar, RJ Kurtz, SR BE Wetzel, C Gil, B Kuzuhara, M Manfra, M TI Advances in AlGaN-based deep UV LEDs SO GaN, AIN, InN and Their Alloys SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on GaN, AIN, InN and Their Alloys held at the 2004 MRS Fall Meeting CY NOV 29-DEC 03, 2004 CL Boston, MA SP Mat Res Soc ID LIGHT-EMITTING-DIODES; 280 NM; EMISSION; OPERATION; MW AB Materials studies of high Al-content (> 30%) AlGaN epilayers and the performance of AlGaN-based LEDs with emission wavelengths shorter than 300 nm are reported. N-type AlGaN films with Al compositions greater than 30% reveal a reduction in conductivity with increasing Al composition. The reduction of threading dislocation density from the 1-5 x 10(10) cm(-2) range to the 6-9 x 10(9)cm(2) range results in an improvement of electrical conductivity and Al0.90Ga0.10N films with n = 1.6e17 cm(-3) and mu = 20 cm(2)/Vs have been achieved. The design, fabrication and packaging of flip-chip bonded deep UV LEDs is described. Large area (1 mm x 1 mm) LED structures with interdigitated contacts demonstrate output powers of 2.25 mW at 297 nm and 1.3 mW at 276 nm when operated under DC current. 300 gm x 300 mu m LEDs emitting at 295 nm and operated at 20 mA DC have demonstrated less than 50% drop in output power after more than 2400 hours of operation. Optimization of the electron block layer in 274 nm LED structures has enabled a significant reduction in deep level emission bands, and a peak quantum well to deep level ratio of 700:1 has been achieved for 300 mu m x 300 gm LEDS operated at 100 mA DC. Shorter wavelength LED designs are described, and LEDs emitting at 260 nm, 254nm and 237 nm are reported. C1 Sandia Natl Labs, Semicond Mat & Devices Sci Dept, Albuquerque, NM 87185 USA. RP Crawford, MH (reprint author), Sandia Natl Labs, Semicond Mat & Devices Sci Dept, Albuquerque, NM 87185 USA. NR 19 TC 0 Z9 0 U1 1 U2 3 PU MATERIALS RESEARCH SOCIETY PI WARRENDALE PA 506 KEYSTONE DRIVE, WARRENDALE, PA 15088-7563 USA SN 0272-9172 BN 1-55899-779-2 J9 MATER RES SOC SYMP P PY 2005 VL 831 BP 545 EP 556 PG 12 WC Materials Science, Ceramics; Optics; Physics, Condensed Matter SC Materials Science; Optics; Physics GA BCT72 UT WOS:000231147200082 ER PT S AU Kaplar, RJ Kurtz, SR Koleske, DD Allerman, AA Fischer, AJ Crawford, MH AF Kaplar, RJ Kurtz, SR Koleske, DD Allerman, AA Fischer, AJ Crawford, MH BE Wetzel, C Gil, B Kuzuhara, M Manfra, M TI Characterization of minority-carrier hole transport in nitride-based light-emitting diodes with optical and electrical time-resolved techniques SO GaN, AIN, InN and Their Alloys SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on GaN, AIN, InN and Their Alloys held at the 2004 MRS Fall Meeting CY NOV 29-DEC 03, 2004 CL Boston, MA SP Mat Res Soc ID STEP-RECOVERY; GAN; LIFETIMES AB Forward-to-reverse bias step-recovery measurements were performed on In.07Ga.93N/GaN and Al.36Ga.64N/Al.46Ga.54N quantum-well (QW) light-emitting diodes grown on sapphire. With the QW sampling the minority-carrier hole density at a single position, distinctive two-phase optical decay curves were observed. Using diffusion equation solutions to self-consistently model both the electrical and optical responses, hole transport parameters tau(p) = 758 +/- 44 ns, L-p = 588 +/- 45 nm, and mu(p) = 0.18 +/- 0.02 cm(2)/Vs were obtained for GaN. The mobility was thermally activated with an activation energy of 52 meV, suggesting trap-modulated transport. Optical measurements of sub-bandgap peaks exhibited slow responses approaching the bulk lifetime. For Al.46Ga.54N, a longer lifetime of tau(p) = 3.0 us was observed, and the diffusion length was shorter, Lp 280 nm. Mobility was an order of magnitude smaller than in GaN, mu(p) = 10(-2) cm(2)/Vs, and was insensitive to temperature, suggesting hole transport through a network of defects. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Kaplar, RJ (reprint author), Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 11 TC 0 Z9 0 U1 1 U2 3 PU MATERIALS RESEARCH SOCIETY PI WARRENDALE PA 506 KEYSTONE DRIVE, WARRENDALE, PA 15088-7563 USA SN 0272-9172 BN 1-55899-779-2 J9 MATER RES SOC SYMP P PY 2005 VL 831 BP 587 EP 592 PG 6 WC Materials Science, Ceramics; Optics; Physics, Condensed Matter SC Materials Science; Optics; Physics GA BCT72 UT WOS:000231147200087 ER PT S AU Liliental-Weber, Z Zakharov, DN Yu, KM Wu, J Li, SX Ager, JW Walukiewicz, W Haller, EE Lu, H Schaff, WJ AF Liliental-Weber, Z Zakharov, DN Yu, KM Wu, J Li, SX Ager, JW Walukiewicz, W Haller, EE Lu, H Schaff, WJ BE Wetzel, C Gil, B Kuzuhara, M Manfra, M TI Compositional ordering in InxGa1-xN and its influence on optical properties SO GaN, AIN, InN and Their Alloys SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on GaN, AIN, InN and Their Alloys held at the 2004 MRS Fall Meeting CY NOV 29-DEC 03, 2004 CL Boston, MA SP Mat Res Soc ID PHASE-SEPARATION; BAND-GAP; INDIUM NITRIDE; INN; EPITAXY AB InxGa1-x N layers grown with compositions with the predicted miscibility gap have been studied using Transmission Electron Microscopy (TEM), x-ray diffraction and optical measurements (photoluminescence and absorption). The samples (0.34 < x < 0.8) were deposited by Molecular Beam Epitaxy at 800 degrees C using 200 nm AlN buffer layer grown directly on sapphire substrates. Another sample with x = 0.34 was grown on a GaN buffer layer. Dislocation densities in the InGaN layers were typically in the mid-10(10) cm(-2) to 10(11) cm(-2) range. Edge dislocations were the most prevalent. For In concentration x = 0.5 compositional ordering is observed leading to extra diffraction spots in electron and x-ray diffraction. The ordering was not observed for the sample with x=0.34 grown on GaN. Based on TEM measurements the estimated period of ordering Delta was about Delta = 45 angstrom for x = 0.5 and Delta = 65 angstrom for x = 0.78. The sample with x = 0.5 had the highest dislocation density. In addition to the presence of threading dislocations two types of domain boundaries on (0001) and (0110) planes were also observed in this sample. This sample has a broader photoluminescence (PL) that is redshifted compared to the absorption edge ("Stokes shift'). C1 Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Liliental-Weber, Z (reprint author), Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. RI Liliental-Weber, Zuzanna/H-8006-2012; Yu, Kin Man/J-1399-2012; Zakharov, Dmitri/F-4493-2014; Wu, Junqiao/G-7840-2011; OI Yu, Kin Man/0000-0003-1350-9642; Wu, Junqiao/0000-0002-1498-0148; Ager, Joel/0000-0001-9334-9751 NR 17 TC 0 Z9 0 U1 0 U2 0 PU MATERIALS RESEARCH SOCIETY PI WARRENDALE PA 506 KEYSTONE DRIVE, WARRENDALE, PA 15088-7563 USA SN 0272-9172 BN 1-55899-779-2 J9 MATER RES SOC SYMP P PY 2005 VL 831 BP 659 EP 664 PG 6 WC Materials Science, Ceramics; Optics; Physics, Condensed Matter SC Materials Science; Optics; Physics GA BCT72 UT WOS:000231147200098 ER PT B AU Gunter, DK Jackson, KR Konerding, DE Lee, JR Tierney, BL AF Gunter, DK Jackson, KR Konerding, DE Lee, JR Tierney, BL BE Arabnia, HR Ni, J TI Essential Grid workflow monitoring elements SO GCA '05: Proceedings of the 2005 International Conference on Grid Computing and Applications LA English DT Proceedings Paper CT International Conference on Grid Computing and Applications CY JUN 20-23, 2005 CL Las Vegas, NV SP CSREA, Int Technol Inst, World Acad Sci Informat Technol DE Grid performance; Grid troubleshooting; Grid services AB Troubleshooting Grid workflows is difficult. A typical workflow, involves a large number of components - networks, middleware, hosts, etc. - that can fail. Even when monitoring data from all these components is accessible, it is hard to tell whether failures and anomalies in these components are related to a given workflow For the Grid to be truly usable, much of this uncertainty must be eliminated. We propose two new Grid monitoring elements, Grid workflow identifiers and consistent component lifecycle events, that will make Grid troubleshooting easier and thus make Grids more usable, by simplifying the correlation of Grid monitoring data with a particular Grid workflow. C1 Lawrence Berkeley Natl Lab, Distributed Syst Dept, Berkeley, CA 94720 USA. RP Gunter, DK (reprint author), Lawrence Berkeley Natl Lab, Distributed Syst Dept, Berkeley, CA 94720 USA. NR 21 TC 0 Z9 0 U1 0 U2 0 PU C S R E A PRESS PI ATHENS PA 115 AVALON DR, ATHENS, GA 30606 USA PY 2005 BP 39 EP 45 PG 7 WC Computer Science, Theory & Methods SC Computer Science GA BEA08 UT WOS:000236387600006 ER PT B AU Zheng, XC AF Zheng, XC CA Jefferson Lab Hall A E97103 Colla BE Kuhn, S Chen, JP TI Precision measurements of the neutron spin structure at Jefferson Lab Hall A SO GDH 2004: Proceedings of the Third International Symposium on the Gerasimov-Drell-Hearn Sum Rule and Its Extensions LA English DT Proceedings Paper CT 3rd International Symposium on Gerasimov-Drell-Hearn Sum Rule and Its Extensions CY JUN 02-05, 2004 CL Old Dominion Univ, Norfolk, VA SP Jefferson Lab, Hampton Univ, Ist Nazl Fis Nucl, Norfolk State Univ, Virginia Space Grant Consortium, Coll William & Mary HO Old Dominion Univ ID DISTRIBUTIONS; NUCLEON; PROTON; QUARK; G(2) AB We present here recent progress on the experimental study of the neutron spin structure at Jeffierson Lab Hall A. We focus on two precision experiments. The physics motivation and the experimental setup will be described first. Then we present results for the neutron spin asymmetry A(1)(n) and results for spin-flavor decomposition of the nucleon spin in the valence quark region, and preliminary results for the neutron spin structure function g(2)(n) at low Q(2). C1 Argonne Natl Lab, Argonne, IL 60439 USA. RP Zheng, XC (reprint author), 12000 Jefferson Ave, Newport News, VA 23606 USA. NR 24 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 981-256-145-5 PY 2005 BP 73 EP 83 DI 10.1142/9789812702111_0008 PG 11 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDL86 UT WOS:000234196700008 ER PT B AU Bosted, PE AF Bosted, PE BE Kuhn, S Chen, JP TI Experimental summary and outlook SO GDH 2004: Proceedings of the Third International Symposium on the Gerasimov-Drell-Hearn Sum Rule and Its Extensions LA English DT Proceedings Paper CT 3rd International Symposium on Gerasimov-Drell-Hearn Sum Rule and Its Extensions CY JUN 02-05, 2004 CL Old Dominion Univ, Norfolk, VA SP Jefferson Lab, Hampton Univ, Ist Nazl Fis Nucl, Norfolk State Univ, Virginia Space Grant Consortium, Coll William & Mary HO Old Dominion Univ AB A brief experimental overview of the workshop is given, with emphasis on polarized targets from the experimental equipment perspective, and kinematic coverage, precision, and newly investigated channels from the experimental results perspective. C1 Jefferson Lab, Newport News, VA 23606 USA. RP Bosted, PE (reprint author), Jefferson Lab, Newport News, VA 23606 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 981-256-145-5 PY 2005 BP 155 EP 158 DI 10.1142/9789812702111_0016 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDL86 UT WOS:000234196700016 ER PT B AU Afanasev, AV Merenkov, NP AF Afanasev, AV Merenkov, NP BE Kuhn, S Chen, JP TI Single-spin asymmetries from two-photon exchange in elastic electron-proton scattering SO GDH 2004: Proceedings of the Third International Symposium on the Gerasimov-Drell-Hearn Sum Rule and Its Extensions LA English DT Proceedings Paper CT 3rd International Symposium on Gerasimov-Drell-Hearn Sum Rule and Its Extensions CY JUN 02-05, 2004 CL Old Dominion Univ, Norfolk, VA SP Jefferson Lab, Hampton Univ, Ist Nazl Fis Nucl, Norfolk State Univ, Virginia Space Grant Consortium, Coll William & Mary HO Old Dominion Univ ID POLARIZATION AB The parity-conserving single-spin beam asymmetry of elastic electron-proton scattering is induced by an absorptive part of the two-photon exchange amplitude. We, demonstrate that this asymmetry has logarithmic and double-logarithmic enhancement due to contributions of hard collinear quasi-real photons. An optical theorem is used to evaluate the asymmetry in terms of the total photoproduction cross section on the proton. C1 Jefferson Lab, Newport News, VA 23606 USA. RP Afanasev, AV (reprint author), Jefferson Lab, Newport News, VA 23606 USA. NR 21 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 981-256-145-5 PY 2005 BP 176 EP 182 DI 10.1142/9789812702111_0020 PG 7 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDL86 UT WOS:000234196700020 ER PT B AU Keith, CD Seely, ML Dzyubak, O AF Keith, CD Seely, ML Dzyubak, O BE Kuhn, S Chen, JP TI Design of a frozen spin target for CLAS SO GDH 2004: Proceedings of the Third International Symposium on the Gerasimov-Drell-Hearn Sum Rule and Its Extensions LA English DT Proceedings Paper CT 3rd International Symposium on Gerasimov-Drell-Hearn Sum Rule and Its Extensions CY JUN 02-05, 2004 CL Old Dominion Univ, Norfolk, VA SP Jefferson Lab, Hampton Univ, Ist Nazl Fis Nucl, Norfolk State Univ, Virginia Space Grant Consortium, Coll William & Mary HO Old Dominion Univ ID POLARIZED TARGET AB A frozen spin target for the CEBAF Large Acceptance Spectrometer (CLAS) is under construction for a series of experiments that scatter tagged, polarized photons from both longitudinally and transversely polarized protons. Compared to the polarized target previously used inside CLAS, the proposed frozen spin target will better utilize the spectrometer's nearly 4 pi acceptance. The target material will be dynamically polarized at 5 T and 0.3 K and then cooled to about 0.05 K by a horizontal He-3/He-4 dilution refrigerator. The polarization will be preserved by internal superconducting coils providing 0.3-0.5 T. C1 Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. RP Keith, CD (reprint author), Thomas Jefferson Natl Accelerator Facil, 1200 Jefferson Ave, Newport News, VA 23606 USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 981-256-145-5 PY 2005 BP 201 EP 205 DI 10.1142/9789812702111_0024 PG 5 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDL86 UT WOS:000234196700024 ER PT B AU Avakian, H Elouadrhiri, L AF Avakian, H Elouadrhiri, L CA CLAS Collaboration BE Kuhn, S Chen, JP TI Single spin asymmetries in electroproduction at CLAS SO GDH 2004: Proceedings of the Third International Symposium on the Gerasimov-Drell-Hearn Sum Rule and Its Extensions LA English DT Proceedings Paper CT 3rd International Symposium on Gerasimov-Drell-Hearn Sum Rule and Its Extensions CY JUN 02-05, 2004 CL Old Dominion Univ, Norfolk, VA SP Jefferson Lab, Hampton Univ, Ist Nazl Fis Nucl, Norfolk State Univ, Virginia Space Grant Consortium, Coll William & Mary HO Old Dominion Univ ID FINAL-STATE INTERACTIONS; DEEP-INELASTIC SCATTERING; PARTON DISTRIBUTIONS; DRELL-YAN; GAUGE; FRAGMENTATION AB We present measurements of spin asymmetries in semi-inclusive processes in hard scattering kinematics using a 5.7 GeV electron beam and the CEBAF Large Acceptance Spectrometer (CLAS) at JLab. Scattering of longitudinally polarized electrons off an unpolarized liquid-hydrogen and off a polarized NH3 targets was studied over a wide range of kinematics. Non-zero single-beam and single-target spin asymmetries have been observed in semi-inclusive pion production in hard-scattering kinematics (Q(2) > 1.2 GeV2,W-2 > 4 GeV2). Systematic studies of factorization of x and z dependences have been done for different spin-dependent and spin-independent observables. No significant x/z dependence has been observed within statistical uncertainties, which is consistent with factorization of hard scattering and fragmentation processes. C1 Jefferson Lab, Newport News, VA 23606 USA. RP Avakian, H (reprint author), Jefferson Lab, 12000 Jefferson Ave, Newport News, VA 23606 USA. NR 21 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 981-256-145-5 PY 2005 BP 228 EP 232 DI 10.1142/9789812702111_0029 PG 5 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDL86 UT WOS:000234196700029 ER PT B AU Deur, A AF Deur, A BE Kuhn, S Chen, JP TI Determination of the low Q(2) evolution of the Bjorken integral SO GDH 2004: PROCEEDINGS OF THE THIRD INTERNATIONAL SYMPOSIUM ON THE GERASIMOV-DRELL-HEARN SUM RULE AND ITS EXTENSIONS LA English DT Proceedings Paper CT 3rd International Symposium on Gerasimov-Drell-Hearn Sum Rule and Its Extensions CY JUN 02-05, 2004 CL Old Dominion Univ, Norfolk, VA SP Jefferson Lab, Hampton Univ, Ist Nazl Fis Nucl, Norfolk State Univ, Virginia Space Grant Consortium, Coll William & Mary HO Old Dominion Univ ID SUM-RULE; PROTON AB We report on an experimental determination of the Q(2)-dependence of the Bjorken sum using data from Jefferson Lab Hall A and Hall B in the range 0.16 < Q(2) < 1.1 GeV2. A twist analysis is performed. Overall, the higher twist corrections are found to be small due to a cancellation between the twist 4 and 6 terms. C1 Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. RP Deur, A (reprint author), Thomas Jefferson Natl Accelerator Facil, 12000 Jefferson Ave, Newport News, VA 23606 USA. EM deurpam@jlab.gov NR 20 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 981-256-145-5 PY 2005 BP 233 EP 237 DI 10.1142/9789812702111_0030 PG 5 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDL86 UT WOS:000234196700030 ER PT B AU Drell, S AF Drell, S BE Kuhn, S Chen, JP TI The gravest danger: Nuclear weapons and their proliferation SO GDH 2004: Proceedings of the Third International Symposium on the Gerasimov-Drell-Hearn Sum Rule and Its Extensions LA English DT Proceedings Paper CT 3rd International Symposium on Gerasimov-Drell-Hearn Sum Rule and Its Extensions CY JUN 02-05, 2004 CL Old Dominion Univ, Norfolk, VA SP Jefferson Lab, Hampton Univ, Ist Nazl Fis Nucl, Norfolk State Univ, Virginia Space Grant Consortium, Coll William & Mary HO Old Dominion Univ C1 Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. RP Drell, S (reprint author), Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 981-256-145-5 PY 2005 BP 323 EP 323 DI 10.1142/9789812702111_0043 PG 1 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA BDL86 UT WOS:000234196700043 ER PT B AU Huang, CF Rocha, LM AF Huang, Chien-Feng Rocha, Luis M. BE Beyer, HG TI Tracking extrema in dynamic environments using a coevolutionary agent-based model of genotype edition SO GECCO 2005: Genetic and Evolutionary Computation Conference, Vols 1 and 2 LA English DT Proceedings Paper CT Genetic and Evolutionary Computation Conference CY JUN 25-29, 2005 CL Washington, DC SP ACM SIGEVO DE RNA Editing; genotype editing; agent-based model; coevolution; editing frequency; dynamic environments ID RNA AB Typical applications of evolutionary optimization in static environments involve the approximation of the extrema of functions. For dynamic environments, the interest is not to locate the extrema but to follow it as closely as possible. This paper compares the extrema-tracking performance of a traditional Genetic Algorithm and a coevolutionary agent based model of Genotype Editing (ABMGE). This model is constructed using several genetic editing characteristics that are gleaned from the RNA editing system as observed in several organisms. The incorporation of editing mechanisms provides a means for artificial agents with genetic descriptions to gain greater phenotypic plasticity. By allowing the family of editors and the genotypes of agents to coevolve using the re-generation of editors as a control switch for environmental changes, the artificial agents in ABMGE can discover proper editors to facilitate the tracking of the extrema in dynamic environments. We will show that this agent-based model, together with a coevolutionary mechanism, is more adaptive and robust than the GA. We expect the framework proposed in this paper to advance the current state of research of Evolutionary Computation in dynamic environments. C1 Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87544 USA. RP Huang, CF (reprint author), Los Alamos Natl Lab, Ctr Nonlinear Studies, MS B258, Los Alamos, NM 87544 USA. NR 18 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 1-59593-010-8 PY 2005 BP 545 EP 552 PG 8 WC Computer Science, Artificial Intelligence; Computer Science, Theory & Methods SC Computer Science GA BFI62 UT WOS:000242040700081 ER PT B AU Huang, CF Bieniawski, S Wolpert, DH Strauss, CEM AF Huang, Chien-Feng Bieniawski, Stefan Wolpert, David H. Strauss, Charlie E. M. BE Beyer, HG TI A comparative study of probability collectives based multi-agent systems and Genetic Algorithms SO GECCO 2005: Genetic and Evolutionary Computation Conference, Vols 1 and 2 LA English DT Proceedings Paper CT Genetic and Evolutionary Computation Conference CY JUN 25-29, 2005 CL Washington, DC SP ACM SIGEVO DE multi-agent systems; Probability Collectives; Product Distribution theory; genetic algorithms; estimation of distribution algorithms AB We compare Genetic Algorithms (GA's) with Probability Collectives (PC), a new framework for distributed optimization and control. In contrast to GA's, PC-based methods do not update populations of solutions. Instead they update an explicitly parameterized probability distribution p over the space of solutions. That updating of p arises as the optimization of a functional of p. The functional is chosen so that any p that optimizes it should be p peaked about good solutions. The PC approach has deep connections with both game theory and statistical physics. We review the PC approach using its motivation as the information theoretic formulation of bounded rationality for multi-agent systems (MAS). It is then compared with GA's on a diverse set of problems. To handle high dimensional surfaces, in the PC method investigated here p is restricted to a product distribution. Each distribution in that product is controlled by a separate agent. The test functions were selected for their difficulty using either traditional gradient descent or genetic algorithms. On those functions the PC-based approach significantly outperforms traditional GA's in both rate of descent, trapping in false minima, and long term optimization. C1 Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87544 USA. RP Huang, CF (reprint author), Los Alamos Natl Lab, Ctr Nonlinear Studies, POB 1663, Los Alamos, NM 87544 USA. NR 3 TC 3 Z9 3 U1 0 U2 4 PU ASSOC COMPUTING MACHINERY PI NEW YORK PA 1515 BROADWAY, NEW YORK, NY 10036-9998 USA BN 1-59593-010-8 PY 2005 BP 751 EP 752 PG 2 WC Computer Science, Artificial Intelligence; Computer Science, Theory & Methods SC Computer Science GA BFI62 UT WOS:000242040700112 ER PT S AU Gerion, D AF Gerion, D BE Bornhop, DJ Achilefu, SI Raghavachari, R Savitsky, AP TI Power and prospects for studying live cells using semiconductor quantum dots SO Genetically Engineered and Optical Probes for Biomedical Applications III SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Genetically Engineered and Optical Probes for Biomedical Applications III CY JAN 25-26, 2005 CL San Jose, CA SP SPIE DE quantum dots; bioconjuagtion; nuclear targeting; FRET C1 Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Gerion, D (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave,E-415, Livermore, CA 94551 USA. NR 0 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 0-8194-5678-0 J9 P SOC PHOTO-OPT INS PY 2005 VL 5704 BP 77 EP 85 DI 10.1117/12.591246 PG 9 WC Biochemical Research Methods; Engineering, Biomedical; Optics SC Biochemistry & Molecular Biology; Engineering; Optics GA BCH91 UT WOS:000229367600010 ER PT J AU Game, JC Williamson, MS Baccari, C AF Game, JC Williamson, MS Baccari, C TI X-ray survival characteristics and genetic analysis for nine Saccharomyces deletion mutants that show altered radiation sensitivity SO GENETICS LA English DT Article ID SISTER-CHROMATID COHESION; HISTONE ACETYLTRANSFERASE COMPLEX; N-TERMINAL ACETYLTRANSFERASES; STRAND BREAK REPAIR; CHROMOSOME TRANSMISSION; IONIZING-RADIATION; ADA-COMPLEX; DNA-REPAIR; CEREVISIAE; YEAST AB The availability of a genome-wide set of Saccharomyces deletion mutants provides a chance to identify all the yeast genes involved in DNA repair. Using X rays, we are screening these mutants to identify additional genes that cause increased sensitivity to the lethal effects of ionizing radiation. For each mutant identified as sensitive, we are confirming that the sensitivity phenotype cosegregates with the deletion allele and are obtaining multipoint survival-vs.-dose assays in at least one homozygous diploid and two haploid strains. We present data for deletion mutants involving the genes DOT1, MDM20, NAT3, SPT7, SPT20, GCN5, HFI1, DCC1, and VID21/EAF1 and discuss their potential roles in repair. Eight of these genes cause a clear radiation-sensitive phenotype when deleted, but the ninth, GCN5, results in at most a borderline phenotype. None of the deletions confer substantial sensitivity to ultraviolet radiation, although one or two may confer marginal sensitivity. The DOT1 gene is of interest because its only known function is to methylate one lysine residue in the core of the histone H3 protein. We find that histone H3 mutants (supplied by K. Struhl) in which this residue is replaced by other amino acids are also X-ray sensitive, which confirms that methylation of the lysine-79 residue is required for effective repair of radiation damage. C1 Lawrence Berkeley Natl Lab, Donner Lab, Div Life Sci, Berkeley, CA 94720 USA. RP Game, JC (reprint author), Lawrence Berkeley Natl Lab, Donner Lab, Div Life Sci, 1 Cyclotron Rd,Room 326, Berkeley, CA 94720 USA. EM jcgame@lbl.gov FU NIGMS NIH HHS [GM-5997901] NR 63 TC 48 Z9 50 U1 0 U2 2 PU GENETICS PI BALTIMORE PA 428 EAST PRESTON ST, BALTIMORE, MD 21202 USA SN 0016-6731 J9 GENETICS JI Genetics PD JAN PY 2005 VL 169 IS 1 BP 51 EP 63 DI 10.1534/genetics.104.028613 PG 13 WC Genetics & Heredity SC Genetics & Heredity GA 897XJ UT WOS:000227039900006 PM 15371366 ER PT J AU Chaudhuri, BN Yeates, TO AF Chaudhuri, BN Yeates, TO TI A computational method to predict genetically encoded rare amino acids in proteins SO GENOME BIOLOGY LA English DT Article ID ESCHERICHIA-COLI; TRANSFER-RNA; SEQUENCE; SELENOCYSTEINE; SELENIUM; PYRROLYSINE; ALIGNMENTS; ALGORITHM; DATABASE; GENES AB In several natural settings, the standard genetic code is expanded to incorporate two additional amino acids with distinct functionality, selenocysteine and pyrrolysine. These rare amino acids can be overlooked inadvertently, however, as they arise by recoding at certain stop codons. We report a method for such recoding prediction from genomic data, using read-through similarity evaluation. A survey across a set of microbial genomes identifies almost all the known cases as well as a number of novel candidate proteins. C1 Univ Calif Los Angeles, DOE Inst Genom & Proteom, Los Angeles, CA 90024 USA. Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA USA. RP Yeates, TO (reprint author), Univ Calif Los Angeles, DOE Inst Genom & Proteom, Los Angeles, CA 90024 USA. EM yeates@mbi.ucla.edu NR 37 TC 12 Z9 12 U1 0 U2 0 PU BIOMED CENTRAL LTD PI LONDON PA MIDDLESEX HOUSE, 34-42 CLEVELAND ST, LONDON W1T 4LB, ENGLAND SN 1474-7596 J9 GENOME BIOL JI Genome Biol. PY 2005 VL 6 IS 9 AR R79 DI 10.1186/gb-2005-6-9-r79 PG 15 WC Biotechnology & Applied Microbiology; Genetics & Heredity SC Biotechnology & Applied Microbiology; Genetics & Heredity GA 970JJ UT WOS:000232301600013 PM 16168086 ER PT J AU Richards, S Liu, Y Bettencourt, BR Hradecky, P Letovsky, S Nielsen, R Thornton, K Hubisz, MJ Chen, R Meisel, RP Couronne, O Hua, SJ Smith, MA Zhang, PL Liu, J Bussemaker, HJ van Batenburg, MF Howells, SL Scherer, SE Sodergren, E Matthews, BB Crosby, MA Schroeder, AJ Ortiz-Barrientos, D Rives, CM Metzker, ML Muzny, DM Scott, G Steffen, D Wheeler, DA Worley, KC Havlak, P Durbin, KJ Egan, A Gill, R Hume, J Morgan, MB Miner, G Hamilton, C Huang, YM Waldron, L Verduzco, D Clerc-Blankenburg, KP Dubchak, I Noor, MAF Anderson, W White, KP Clark, AG Schaeffer, SW Gelbart, W Weinstock, GM Gibbs, RA AF Richards, S Liu, Y Bettencourt, BR Hradecky, P Letovsky, S Nielsen, R Thornton, K Hubisz, MJ Chen, R Meisel, RP Couronne, O Hua, SJ Smith, MA Zhang, PL Liu, J Bussemaker, HJ van Batenburg, MF Howells, SL Scherer, SE Sodergren, E Matthews, BB Crosby, MA Schroeder, AJ Ortiz-Barrientos, D Rives, CM Metzker, ML Muzny, DM Scott, G Steffen, D Wheeler, DA Worley, KC Havlak, P Durbin, KJ Egan, A Gill, R Hume, J Morgan, MB Miner, G Hamilton, C Huang, YM Waldron, L Verduzco, D Clerc-Blankenburg, KP Dubchak, I Noor, MAF Anderson, W White, KP Clark, AG Schaeffer, SW Gelbart, W Weinstock, GM Gibbs, RA TI Comparative genome sequencing of Drosophila pseudoobscura: Chromosomal, gene, and cis-element evolution SO GENOME RESEARCH LA English DT Article ID TRANSPOSABLE ELEMENT; CAENORHABDITIS-ELEGANS; REGULATORY ELEMENTS; HOBO TRANSPOSONS; MOBILE ELEMENTS; SPECIES GROUP; DNA-SEQUENCE; MELANOGASTER; INVERSIONS; SELECTION AB We have sequenced the genome of a second Drosophila species, Drosophila pseudoobscura, and compared this to the genome sequence of Drosophila melanogaster, a primary model organism. Throughout evolution the vast majority of Drosophila genes have remained on the same chromosome arm, but within each arm gene order has been extensively reshuffled, leading to a minimum of 921 syntenic blocks shared between the species. A repetitive sequence is found in the A pseudoobscura genome at many junctions between adjacent syntenic blocks. Analysis of this novel repetitive element family suggests that recombination between offset elements may have given rise to many paracentric inversions, thereby contributing to the shuffling of gene order in the D. pseudoobscura lineage. Based on sequence similarity and synteny, 10,516 putative orthologs have been identified as a core gene set conserved over 25-55 million years (Myr) since the pseudoobscura/melanogaster divergence. Genes expressed in the testes had higher amino acid sequence divergence than the genome-wide average, consistent with the rapid evolution of sex-specific proteins. Cis-regulatory sequences are more conserved than random and nearby sequences between the species-but the difference is slight, suggesting that the evolution of cis-regulatory elements is flexible. Overall, a pattern of repeat-mediated chromosomal rearrangement, and high coadaptation of both male genes and cis-regulatory sequences emerges as important themes of genome divergence between these species of Drosophila. C1 Baylor Coll Med, Human Genome Sequencing Ctr, Houston, TX 77030 USA. Baylor Coll Med, Dept Mol & Human Genet, Houston, TX 77030 USA. Baylor Coll Med, Program Struct & Computat Biol & Mol Biophys, Houston, TX 77030 USA. Baylor Coll Med, WM Keck Ctr Computat Biol, Houston, TX 77030 USA. Harvard Univ, Biol Labs, FlyBase Harvard, Dept Mol & Cellular Biol, Cambridge, MA 02138 USA. Cornell Univ, Dept Biol Stat & Computat Biol, Ithaca, NY 14853 USA. Cornell Univ, Dept Mol Biol & Genet, Ithaca, NY 14853 USA. Penn State Univ, Intercoll Grad Degree Program Genet, University Pk, PA 16802 USA. Penn State Univ, Dept Biol, University Pk, PA 16802 USA. Penn State Univ, Inst Mol Evolut Genet, University Pk, PA 16802 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Yale Univ, Sch Med, Dept Genet, New Haven, CT 06520 USA. Columbia Univ, Dept Biol Sci, New York, NY 10027 USA. Columbia Univ, Ctr Computat Biol & Bioinformat, New York, NY 10027 USA. Louisiana State Univ, Dept Biol Sci, Baton Rouge, LA 70803 USA. US Dept Energy Joint Genome Inst, Walnut Creek, CA 94598 USA. Univ Amsterdam, Swammerdam Inst Life Sci, Amsterdam, Netherlands. Univ Georgia, Dept Genet, Athens, GA 30602 USA. RP Baylor Coll Med, Human Genome Sequencing Ctr, Houston, TX 77030 USA. EM stephenr@bcm.tmc.edu RI Schaeffer, Stephen/B-1662-2010; Nielsen, Rasmus/D-4405-2009; Phelps, Steve/H-2263-2011; Couronne, Olivier Couronne/G-1244-2012; Ortiz-Barrientos, Daniel/B-2274-2010; OI Nielsen, Rasmus/0000-0003-0513-6591; Ortiz-Barrientos, Daniel/0000-0002-7493-416X; Howells, Sally/0000-0003-4488-2669; Schaeffer, Stephen/0000-0003-2070-5342; Noor, Mohamed/0000-0002-5400-4408 FU NHGRI NIH HHS [P41 HG000739, 1U01 HG02570, 5 P41 HG00739, U54 HG003273]; NIAID NIH HHS [AI-45402, R01 AI045402]; NIGMS NIH HHS [5 R37 GM28669, GM-64590, R01 GM064590, R37 GM028669]; NLM NIH HHS [LM007276, P20 LM007276] NR 94 TC 379 Z9 735 U1 5 U2 27 PU COLD SPRING HARBOR LAB PRESS, PUBLICATIONS DEPT PI COLD SPRING HARBOR PA 1 BUNGTOWN RD, COLD SPRING HARBOR, NY 11724 USA SN 1088-9051 EI 1549-5469 J9 GENOME RES JI Genome Res. PD JAN PY 2005 VL 15 IS 1 BP 1 EP 18 DI 10.1101/gr.3059305 PG 18 WC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Genetics & Heredity SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Genetics & Heredity GA 885QB UT WOS:000226170900001 PM 15632085 ER PT J AU Ovcharenko, I Loots, GG Nobrega, MA Hardison, RC Miller, W Stubbs, L AF Ovcharenko, I Loots, GG Nobrega, MA Hardison, RC Miller, W Stubbs, L TI Evolution and functional classification of vertebrate gene deserts SO GENOME RESEARCH LA English DT Article ID HUMAN GENOME; MAMMALIAN EVOLUTION; MOUSE; ELEMENTS; SEQUENCES; REGIONS; RAT; SUBSTITUTION; COVARIATION; METHYLATION AB Large tracts of the human genome, known as gene deserts, are devoid of protein-coding genes. Dichotomy in their level of conservation with chicken separates these regions into two distinct categories, stable and variable. The separation is not caused by differences in rates of neutral evolution but instead appears to be related to different biological functions of stable and variable gene deserts in the human genome. Gene Ontology categories of the adjacent genes are strongly biased toward transcriptional regulation and development for the stable gene deserts, and toward distinctively different functions for the variable gene deserts. Stable gene deserts resist chromosomal rearrangements and appear to harbor multiple distant regulatory elements physically linked to their neighboring genes, with the linearity of conservation invariant throughout vertebrate evolution. C1 Lawrence Livermore Natl Lab, Energy Environm Biol & Inst Comp, Livermore, CA 94550 USA. Lawrence Livermore Natl Lab, Genome Biol Div, Livermore, CA 94550 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Genom Div, Berkeley, CA 94720 USA. Penn State Univ, Dept Biochem & Mol Biol, University Pk, PA 16802 USA. Penn State Univ, Dept Comp Sci & Engn, University Pk, PA 16802 USA. Penn State Univ, Dept Biol, University Pk, PA 16802 USA. RP Ovcharenko, I (reprint author), Lawrence Livermore Natl Lab, Energy Environm Biol & Inst Comp, Livermore, CA 94550 USA. EM ovcharenko1@llnl.gov RI Hardison, Ross/G-1142-2010; OI Hardison, Ross/0000-0003-4084-7516; Stubbs, Lisa/0000-0002-9556-1972 FU NHGRI NIH HHS [HG02238, R01 HG002238]; NIDDK NIH HHS [R56 DK065806, DK065806, R01 DK065806] NR 34 TC 151 Z9 158 U1 1 U2 6 PU COLD SPRING HARBOR LAB PRESS, PUBLICATIONS DEPT PI COLD SPRING HARBOR PA 1 BUNGTOWN RD, COLD SPRING HARBOR, NY 11724 USA SN 1088-9051 J9 GENOME RES JI Genome Res. PD JAN PY 2005 VL 15 IS 1 BP 137 EP 145 DI 10.1101/gr.3015505 PG 9 WC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Genetics & Heredity SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Genetics & Heredity GA 885QB UT WOS:000226170900014 PM 15590943 ER PT J AU Ovcharenko, I Loots, GG Giardine, BM Hou, MM Ma, J Hardison, RC Stubbs, L Miller, W AF Ovcharenko, I Loots, GG Giardine, BM Hou, MM Ma, J Hardison, RC Stubbs, L Miller, W TI Mulan: Multiple-sequence local alignment and visualization for studying function and evolution SO GENOME RESEARCH LA English DT Article ID GENOMIC DNA-SEQUENCES; FACTOR-BINDING SITES; TRANSCRIPTION FACTORS; NONCODING SEQUENCES; MOUSE; DATABASE; GENES; GATA3; IDENTIFICATION; EXPRESSION AB Multiple-sequence alignment analysis is a powerful approach for understanding phylogerietic relationships, annotating genes, and detecting functional regulatory elements. With a growing number of partly or fully sequenced vertebrate genomes, effective tools for performing Multiple comparisons are required to accurately and efficiently assist biological discoveries. Here we introduce Mulan (http://mulaii.dcode.org/), a novel method and a network server for comparing multiple draft and finished-quality sequences to identify functional elements conserved over evolutionary time. Mulan brings together several novel algorithms: the TBA multi-aligner program for rapid identification of local sequence conservation, and the multiTF program for detecting evolutionarily conserved transcription factor binding sites in multiple alignments. In addition, Mulail supports two-way communication with the GALA database; alignments Of Multiple species dynamically generated in GALA can be viewed in Mulan, and conserved transcription factor binding sites identified with Milan/MultiTF can be integrated and overlaid with extensive genome annotation data using GALA. Local multiple alignments computed by Mulan ensure reliable representation of short- and large-scale genomic rearrangements in distant organisms. MUlan allows for interactive modification of critical conservation parameters to differentially predict conserved regions in comparisons of both closely and distantly related species. We illustrate the uses and applications of the Mulan tool through multispecies comparisons of the GATA3 gene locus and the identification of elements that are conserved in a different way in avians than in other genomes, allowing speculation oil the evolution of birds. Source code for the aligners and the aligner-evaluation software call be freely downloaded from http://www.bx.psu.edu/miller_lab/. C1 Lawrence Livermore Natl Lab, Energy Environm Biol & Inst Comp, Livermore, CA 94550 USA. Lawrence Livermore Natl Lab, Genome Biol Div, Livermore, CA 94550 USA. Penn State Univ, Dept Biochem & Mol Biol, University Pk, PA 16802 USA. Penn State Univ, Dept Comp Sci & Engn, University Pk, PA 16802 USA. Penn State Univ, Dept Biol, University Pk, PA 16802 USA. RP Ovcharenko, I (reprint author), Lawrence Livermore Natl Lab, Energy Environm Biol & Inst Comp, Livermore, CA 94550 USA. EM ovcharenko1@llnl.gov RI Hardison, Ross/G-1142-2010; OI Hardison, Ross/0000-0003-4084-7516; Stubbs, Lisa/0000-0002-9556-1972 FU NHGRI NIH HHS [HG02238, R01 HG002238] NR 41 TC 156 Z9 161 U1 0 U2 8 PU COLD SPRING HARBOR LAB PRESS, PUBLICATIONS DEPT PI WOODBURY PA 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2924 USA SN 1088-9051 J9 GENOME RES JI Genome Res. PD JAN PY 2005 VL 15 IS 1 BP 184 EP 194 DI 10.1101/gr.3007205 PG 11 WC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Genetics & Heredity SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Genetics & Heredity GA 885QB UT WOS:000226170900019 PM 15590941 ER PT J AU Kim, K Rajmohan, N Kim, HJ Kim, SH Hwang, GS Yun, ST Gu, B Cho, MJ Lee, SH AF Kim, K Rajmohan, N Kim, HJ Kim, SH Hwang, GS Yun, ST Gu, B Cho, MJ Lee, SH TI Evaluation of geochemical processes affecting groundwater chemistry based on mass balance approach: A case study in Namwon, Korea SO GEOCHEMICAL JOURNAL LA English DT Article DE mineral weathering; nitrate generation; salts; proton exchange; mass balance; Namwon ID SANDY SILICATE AQUIFER; WATER-ROCK INTERACTION; NORTHERN WISCONSIN; AGRICULTURAL AREA; EVOLUTION; QUALITY; DENITRIFICATION; HYDROCHEMISTRY; NITROGEN; NITRATE AB This study shows that the role of various geochemical processes regulating groundwater chemistry can be effectively evaluated using a simple mass balance approach. The application of this approach was successful in a case study on a predominantly agricultural area (Namwon, Korea). For this study, a total of 279 groundwater samples were collected from 93 wells distributed over the study area and analyzed for pH, alkalinity, major cations (Ca2+, Mg2+, Na+, K+), major anions (NO3-, Cl-, SO42-), and silica. Nitrate, chloride, and sulfate concentrations point to the influence of anthropogenic activities on the groundwater composition. Increasing concentrations of major anions and cations toward the top of the aquifer suggests that they come mostly from surface sources. Mass balance analysis based on reaction stoichiometry reveals that the water chemistry is regulated primarily by the combination of three processes: (1) the weathering of minerals such as silicates, carbonates, and/or lime; (2) the input of Cl/SO4 salts; and (3) the generation of nitrates (through nitrification and/or aerobic decomposition of organic matter). Based on this mass balance analysis, we could also quantify the contributions of each process to the observed water chemistry. The results show that mineral weathering is the predominant process affecting groundwater chemistry. Groundwaters more influenced by anthropogenic activities generally show the larger effect of mineral weathering, suggesting that (1) the weathering of silicates might be triggered by protons generated from nitrate generation and/or (2) the water chemistry is affected by lime (CaO) applied to cultivated land and/or carbonates (i.e., CaCO3) in cement materials. However, the influence of protons, which can be co-produced with nitrate, on concentrations of major cations and alkalinity due to ion exchange were revealed to be negligible because the studied groundwater has sufficient alkalinity to neutralize those acids. C1 Kunsan Natl Univ, Dept Environm Engn, Kunsan 573701, South Korea. Korea Univ, Dept Earth & Environm Sci, Seoul 136701, South Korea. Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. Korea Inst Geol & Mineral Resources, Taejon 305350, South Korea. Kunsan Natl Univ, Dept Ocean Informat Sci, Kunsan 573701, South Korea. RP Kim, K (reprint author), Kunsan Natl Univ, Dept Environm Engn, Kunsan 573701, South Korea. EM kangjoo@kunsan.ac.kr RI Gu, Baohua/B-9511-2012; OI Gu, Baohua/0000-0002-7299-2956; Lee, Sang Ho/0000-0001-6753-8815; Kim, Kangjoo/0000-0002-3642-1486 NR 44 TC 16 Z9 16 U1 0 U2 9 PU GEOCHEMICAL SOC JAPAN PI TOKYO PA 358-5 YAMABUKI-CHO, SHINJUKU-KU, TOKYO, 162-0801, JAPAN SN 0016-7002 EI 1880-5973 J9 GEOCHEM J JI Geochem. J. PY 2005 VL 39 IS 4 BP 357 EP 369 DI 10.2343/geochemj.39.357 PG 13 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 950MZ UT WOS:000230862700006 ER PT J AU Horita, J AF Horita, J TI Stable isotope thermometry: There is more to it than temperature SO GEOCHEMICAL JOURNAL LA English DT Review DE stable isotopes; thermometry; salt effect; pressure effect; dissolved mineral effect ID AQUEOUS SALT-SOLUTIONS; LIQUID WATER EQUILIBRATION; ALKALI-HALIDE SOLUTIONS; EXPERIMENTAL HYDROGEN ISOTOPE; ELEVATED-TEMPERATURES; FRACTIONATION FACTORS; THERMODYNAMIC PROPERTIES; EXCHANGE REACTIONS; CHLORIDE SOLUTIONS; HIGH-PRESSURE AB The concept of isotope thermometry, which has been the heart and soul of stable isotope geochemistry since its foundation more than half a century ago, has been constantly tested against the effect of other variables such as pressure, fluid composition and biological processes. Despite the fact that the effect of dissolved salts on isotope partitioning in aqueous systems (the isotope salt effect) was discovered in the early 1950s, soon after carbonate paleothermometry commenced, it took isotope geochemists decades to understand the detail and geochemical significance of the effects, particularly those at elevated temperatures. The effect of pressure, which is potentially large under subduction zone and mantle conditions, has been even more elusive. The 1990s witnessed several significant breakthroughs in experimental and theoretical developments for understanding the effect of these variables on equilibrium isotope partitioning. The controversy of high temperature (> 100 degrees C) isotope salt effects was finally resolved. It was demonstrated later that significant pressure effects exist for D/H fractionation between a hydrous mineral and water at 200-600 degrees C and at pressures to 0.8 GPa. Theoretical advances in understanding the isotope pressure effects, on both minerals and water, were also made during this period. Finally, and unexpectedly, the effects of dissolved minerals were proved to be significant on isotopic distributions in aqueous systems at high temperature and pressure (750 degrees C and 1.5 GPa). This article reviews historical development of these "other" effects in isotope thermometry, highlighting significant discoveries of the past decade. C1 Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RP Horita, J (reprint author), Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. EM horitaj@ornl.gov NR 82 TC 11 Z9 11 U1 1 U2 15 PU GEOCHEMICAL SOC JAPAN PI TOKYO PA 358-5 YAMABUKI-CHO, SHINJUKU-KU, TOKYO, 162-0801, JAPAN SN 0016-7002 EI 1880-5973 J9 GEOCHEM J JI Geochem. J. PY 2005 VL 39 IS 6 BP 481 EP 496 DI 10.2343/geochemj.39.481 PG 16 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 990IE UT WOS:000233735600001 ER PT J AU Ridley, MK Machesky, ML Wesolowski, DJ Palmer, DA AF Ridley, MK Machesky, ML Wesolowski, DJ Palmer, DA TI Surface complexation of neodymium at the rutile-water interface: A potentiometric and modeling study in NaCl media to 250 degrees'C SO GEOCHIMICA ET COSMOCHIMICA ACTA LA English DT Article ID SODIUM-CHLORIDE SOLUTIONS; METAL-OXIDE SURFACES; INCIDENCE XAFS SPECTROSCOPY; TRIPLE-LAYER MODEL; AQUEOUS-SOLUTIONS; TRIVALENT CATIONS; ION ADSORPTION; TEMPERATURE-DEPENDENCE; MALONATE COMPLEXATION; ACTIVITY-COEFFICIENTS AB The adsorption of Nd3+ onto rutile surfaces was examined by potentiometric titration from 25 to 250degreesC, in 0.03 and 0.30m NaCl background electrolyte. Experimental results show that Nd3+ sorbs strongly, even at low temperature, with adsorption commencing below the PHznpc of rutile. In addition, there is a systematic increase in Nd3+ adsorption with increasing temperature. The experimental results were rationalized and described using surface oxygen proton affinities computed from the MUlti SIte Complexation or MUSIC model, coupled with a Stern-based three-layer description of the oxide/water interface. Moreover, molecular-scale information was incorporated successfully into the surface complexation model, providing a unique geometry for the adsorption of Nd3+ on rutile. The primary mode of Nd3+ adsorption was assumed to be the tetradentate configuration found for Y3+ adsorption on the rutile (110) surface from previously described in situ X-ray standing wave experiments, wherein the sorbing cations bond directly with two adjacent "terminal" and two adjacent "bridging" surface oxygen atoms. Similarly, the adsorption of Na+ counterions was also assumed to be tetradentate, as supported by MD simulations of Na+ interactions with the rutile (110) surface, and by analogous X-ray standing wave results for Rb+ adsorption on rutile. Fitting parameters for Nd3+ adsorption included binding constants for the tetradentate adsorption complex and capacitance values for the inner-sphere binding plane. In addition, hydrolysis of the tetradentate adsorption complex was permitted and resulted in significantly improved model fits at higher temperature and pH values. The modeling results indicate that the Stern-based MUSIC surface-complexation model adequately accommodates molecular-scale information to uniquely rationalize and describe multivalent ion adsorption systematically into the hydrothermal regime. Copyright (C) 2005 Elsevier Ltd C1 Texas Tech Univ, Dept Geosci, Lubbock, TX 79409 USA. Illinois State Water Survey, Champaign, IL 61820 USA. Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RP Ridley, MK (reprint author), Texas Tech Univ, Dept Geosci, POB 41053, Lubbock, TX 79409 USA. EM moira.ridley@ttu.edu NR 62 TC 35 Z9 35 U1 0 U2 13 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0016-7037 J9 GEOCHIM COSMOCHIM AC JI Geochim. Cosmochim. Acta PD JAN 1 PY 2005 VL 69 IS 1 BP 63 EP 81 DI 10.1016/j.gca.2004.06.028 PG 19 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 888LB UT WOS:000226374400005 ER PT J AU Serrano, S Garrido, F Campbell, CG Garcia-Gonzalez, MT AF Serrano, S Garrido, F Campbell, CG Garcia-Gonzalez, MT TI Competitive sorption of cadmium and lead in acid soils of Central Spain SO GEODERMA LA English DT Article DE lead; cadmium; sorption isotherms; sorption kinetics; competitive sorption; acid soils ID AMORPHOUS IRON OXYHYDROXIDE; POTASSIUM-CALCIUM EXCHANGE; ORGANIC-MATTER; HEAVY-METALS; CONTAMINATED SOILS; BRAZILIAN SOILS; TROPICAL SOILS; ADSORPTION; COPPER; KINETICS AB The bioavailability and ultimate fate of heavy metals in the environment are controlled by chemical sorption. To assess competitive sorption of Pb and Cd, batch equilibrium experiments (generating sorption isotherms) and kinetics sorption studies were performed using single and binary metal solutions in surface samples of four soils from central Spain. For comparisons between soils, as well as, single and binary metal solutions, soil chemical processes were characterized using the Langmuir equation, ionic strength, and an empirical power function for kinetic sorption. In addition, soil pH and clay mineralogy were used to explain observed sorption processes. Sorption isotherms were well described by the Langmuir equation and the sorption kinetics were well described by an empirical power function within the reaction times in this study. Soils with higher pH and clay content (characterized by having smectite) had the greatest sorption capacity as estimated by the maximum sorption parameter (Q) of the Langmuir equation. All soils exhibited greater sorption capacity for Pb than Cd and the presence of both metals reduced the tendency for either to be sorbed although Cd sorption was affected to a greater extent than that of Pb. The Langmuir binding strength parameter (k) was always greater for Pb than for Cd. However, these k values tended to increase as a result of the simultaneous presence of both metals that may indicate competition for sorption sites promoting the retention of both metals on more specific sorption sites. The kinetic experiments showed that Pb sorption is initially faster than Cd sorption from both single and binary solutions although the simultaneous presence of both metals affected the sorption of Cd at short times while only a minor effect was observed on Pb. The estimated exponents of the kinetic function were in all cases smaller for Pb than for Cd, likely due to diffusion processes into micropores or interlayer space of the clay minerals which occurs more readily for Cd than Pb. Finally, the overall sorption processes of Pb and Cd in the smectitic soil with the highest sorption capacity of the studied soils are slower than in the rest of the soils with a clay mineralogy dominated by kaolinite and illite, exhibiting these soils similar sorption rates. These results demonstrate a significant interaction between Pb and Cd sorption when both metals are present that depends on important soil properties such as the clay mineralogy. (C) 2004 Elsevier B.V. All rights reserved. C1 CSIC, Ctr Ciencias Medioambientales, Madrid 28006, Spain. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA. RP Garrido, F (reprint author), CSIC, Ctr Ciencias Medioambientales, Serrano 115 Dup, Madrid 28006, Spain. EM fernando.garrido@ccma.csic.es RI Garrido, Fernando/H-9868-2012; Garrido, Fernando/J-5602-2014 NR 59 TC 126 Z9 140 U1 9 U2 51 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0016-7061 J9 GEODERMA JI Geoderma PD JAN PY 2005 VL 124 IS 1-2 BP 91 EP 104 DI 10.1016/j.geoderma.2004.04.002 PG 14 WC Soil Science SC Agriculture GA 885IS UT WOS:000226150900007 ER PT J AU Newman, GA Commer, M AF Newman, GA Commer, M TI New advances in three dimensional transient electromagnetic inversion SO GEOPHYSICAL JOURNAL INTERNATIONAL LA English DT Article DE 3D inversion; migration; transient electromagnetic fields ID TIME-DOMAIN; CONDUCTIVITY; FREQUENCY; SOUNDINGS; GERMANY; AREA AB Inversion of transient electromagnetic (TEM) data sets to image the subsurface three-dimensional (3-D) electrical conductivity and magnetic permeability properties can be done directly in the time domain. The technique, first introduced by Wang et al. for causal and diffusive electromagnetic (EM) fields and subsequently implemented by Zhdanov & Portniaguine in the framework of iterative migration, is based upon imaging methods originally developed for seismic wavefields (Claerbout; Tarantola). In this paper, we advance the original derivations of Wang et al. and Zhdanov & Portniaguine to treat non-causal TEM fields, as well as correct a flaw in the theory for treatment of magnetic field data. Our 3-D imaging scheme is based on a conjugate-gradient search for the minimum of an error functional involving EM measurements governed by Maxwell's equations without displacement currents. Treatment for magnetic field, voltage (time derivative of the magnetic field) and electric field data is given. Small model perturbations in the functional can be efficiently computed by propagating the data errors back into the model in reverse time along with a DC field, sourced by the integrated data errors over the measurement time range. By correlating these fields, including the time-integrated back-propagated fields, with the corresponding incident field and its initial value at each image point, efficient computational forms for the gradients are developed. The forms of the gradients allow for additional efficiencies when voltage and electric field data are inverted. In such instances, the combined data errors can be back-propagated jointly, significantly reducing the computation time required to solve the inverse problem. The inversion algorithm is applied to the long offset transient electromagnetic (LOTEM) measurement configuration thereby demonstrating its capability in inverting non-causal field measurements of electric field and voltage, sourced by a grounded wire, over complex structures. Findings also show that migration, without iteration or preconditioning, is not an effective imaging strategy; reconstructions at the first inversion iteration bear little resemblance to simple or complex test models. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA. Sandia Natl Labs, Albuquerque, NM 87185 USA. Univ Cologne, Inst Geophys & Meteorol, D-5000 Cologne, Germany. US DOE, Off Basic Energy Sci, Ames, IA 50011 USA. RP Newman, GA (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, MS 90-1116,1 Cyclotron Rd, Berkeley, CA 94720 USA. EM GANewman@lbl.gov RI Newman, Gregory/G-2813-2015; Commer, Michael/G-3350-2015 OI Commer, Michael/0000-0003-0015-9217 NR 39 TC 28 Z9 34 U1 1 U2 10 PU BLACKWELL PUBLISHING LTD PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DG, OXON, ENGLAND SN 0956-540X J9 GEOPHYS J INT JI Geophys. J. Int. PD JAN PY 2005 VL 160 IS 1 BP 5 EP 32 DI 10.1111/j.1365-246X.2004.02468.x PG 28 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 882RA UT WOS:000225954800002 ER PT J AU Morasca, P Mayeda, K Malagnini, L Walter, WR AF Morasca, P Mayeda, K Malagnini, L Walter, WR TI Coda-derived source spectra, moment magnitudes and energy-moment scaling in the western Alps SO GEOPHYSICAL JOURNAL INTERNATIONAL LA English DT Article DE coda; energy; energy-moment scaling; moment magnitude; source spectra ID SEISMIC ENERGY; STRESS DROP; ALPINE ARC; EARTHQUAKES; CALIFORNIA; INVERSION; RELEASE; SEISMOGRAMS; DEPENDENCE; EXTENSION AB A stable estimate of the earthquake source spectra in the western Alps is obtained using an empirical method based on coda envelope amplitude measurements described by Mayeda et al. for events ranging between M-W similar to 1.0 and similar to5.0. Path corrections for consecutive narrow frequency bands ranging between 0.3 and 25.0 Hz were included using a simple 1-D model for five three-component stations of the Regional Seismic network of Northwestern Italy (RSNI). The 1-D assumption performs well, even though the region is characterized by a complex structural setting involving strong lateral variations in the Moho depth. For frequencies less than 1.0 Hz, we tied our dimensionless, distance-corrected coda amplitudes to an absolute scale in units of dyne cm by using independent moment magnitudes from long-period waveform modelling for three moderate magnitude events in the region. For the higher frequencies, we used small events as empirical Green's functions, with corner frequencies above 25.0 Hz. For each station, the procedure yields frequency-dependent corrections that account for site effects, including those related to f(max), as well as to S-to-coda transfer function effects. After the calibration was completed, the corrections were applied to the entire data set composed of 957 events. Our findings using the coda-derived source spectra are summarized as follows: (i) we derived stable estimates of seismic moment, M-0, (and hence M-W) as well as radiated S-wave energy, (E-S), from waveforms recorded by as few as one station, for events that were too small to be waveform modelled (i. e. events less than M-W similar to 3.5); (ii) the source spectra were used to derive an equivalent local magnitude, M-L(coda), that is in excellent agreement with the network averaged values using direct S waves; (iii) scaled energy, (e) over tilde = E-R/M-0, where E-R, the radiated seismic energy, is comparable to results from other tectonically active regions. C1 Univ Genoa, DipTeRis Settore Geofis, I-16132 Genoa, Italy. Lawrence Livermore Natl Lab, Ground Based Nucl Explos Monitoring Program, Livermore, CA 94551 USA. Ist Nazl Geofis & Vulcanol, I-00143 Rome, Italy. RP Univ Genoa, DipTeRis Settore Geofis, Viale Benedetto XV,5, I-16132 Genoa, Italy. RI Walter, William/C-2351-2013 OI Walter, William/0000-0002-0331-0616 NR 56 TC 23 Z9 23 U1 0 U2 2 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0956-540X EI 1365-246X J9 GEOPHYS J INT JI Geophys. J. Int. PD JAN PY 2005 VL 160 IS 1 BP 263 EP 275 DI 10.1111/j.1365-246X.2005.02491.x PG 13 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 882RA UT WOS:000225954800019 ER PT J AU Evans, KF Moriya, H Niitsuma, H Jones, RH Phillips, WS Genter, A Sausse, J Jung, R Baria, R AF Evans, KF Moriya, H Niitsuma, H Jones, RH Phillips, WS Genter, A Sausse, J Jung, R Baria, R TI Microseismicity and permeability enhancement of hydrogeologic structures during massive fluid injections into granite at 3 km depth at the Soultz HDR site SO GEOPHYSICAL JOURNAL INTERNATIONAL LA English DT Article DE enhanced geothermal systems; fluids and rocks; hot dry rock; induced microseismicity; permeability creation ID SOUS-FORETS; INDUCED SEISMICITY; GEOTHERMAL RESERVOIR; HYDRAULIC INJECTIONS; FOCAL MECHANISMS; FRACTURE SYSTEM; STRESS-FIELD; JOINTED ROCK; RHINE GRABEN; FRANCE AB A high-rate injection of 20 000 m 3 of water into granite between 2.8 and 3.4 km depth at the Soultz hot dry rock (HDR) test site in France in 1993 September led to a 200-fold increase in borehole transmissivity and produced a subvertical cloud of microseismicity of dimensions 0.5 km wide, 1.2 km long, 1.5 km high and oriented 25 NW. The resulting data set is unusually complete and well suited to studying permeability creation/enhancement processes in crystalline rock and the utility of microseismic data for revealing them. Although the microseismic cloud defined using joint hypocentre determination (JHD) locations was diffuse and showed little structure, application of the collapsing method showed it to be composed largely of discrete tubes and planes that propagated coherently. One prominent structure that extended 350 m downwards from the vicinity of a flow inlet early in the injection and that appears to contain a major flow path was subjected to detailed investigation to establish its hydrogeologic nature and the mechanisms underpinning its inferred permeability enhancement. High-resolution microseismic mapping techniques (i.e. multiplets and clustering) showed it to be a subvertical, NNW-SSE striking, fracture zone of width 10-20 m. The strike and scale of the structure identifies it as a member of a family of hydrothermally altered, cataclastic shear structures that constitute the primary permeable paths for fluid migration within the rock mass, both under ambient and forced fluid flow conditions. The microseismicity occurred on subvertical, small-scale fractures within the cataclastic shear zone whose azimuths scatter within 22 of parallel to the parent structure. Although the structure is likely to have been naturally permeable to some degree, its permeability appears to have been significantly enhanced as a consequence of the injection. The most likely mechanism of permeability enhancement, which is in accord with the strong preference for the microseismicity to grow downwards, involves strike-slip shearing, which produced the opening of vertical tubes at along-strike jogs in the fault (the so-called Hill mesh). Seismic moment release averaged over the structure suggests shear displacements of at least 0.3 mm occurred, which are sufficient to generate aperture changes that are hydraulically significant. The preponderance of discrete structures within the microseismic cloud after collapsing suggests that significant flow and permeability enhancement (i.e. stimulation) within the rock mass is largely confined to the interiors of shear zones that appear to have a spacing of approximately 100 m. C1 Swiss Fed Inst Technol, Inst Geol, Zurich, Switzerland. Tohoku Univ, Grad Sch Environm Studies, Sendai, Miyagi 980, Japan. Vetco Gray, Penryn, Cornwall, England. Los Alamos Natl Lab, Seism Res Ctr, Los Alamos, NM 87545 USA. Bur Rech Geol & Minieres, Orleans, France. Univ Nancy, UMR CNRS 7566 G2R, Vandoeuvre Les Nancy, France. BGR, Hannover, Germany. GEIE, Soultz Forets, France. RP Evans, KF (reprint author), Swiss Fed Inst Technol, Inst Geol, Zurich, Switzerland. EM keith.evans@erdw.ethz.ch NR 84 TC 67 Z9 71 U1 4 U2 45 PU BLACKWELL PUBLISHING LTD PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DG, OXON, ENGLAND SN 0956-540X J9 GEOPHYS J INT JI Geophys. J. Int. PD JAN PY 2005 VL 160 IS 1 BP 388 EP 412 DI 10.1111/j.1365-246X.2004.02474.x PG 25 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 882RA UT WOS:000225954800028 ER PT J AU Lee, KH Kim, HJ Uchida, T AF Lee, KH Kim, HJ Uchida, T TI Electromagnetic fields in a steel-cased borehole SO GEOPHYSICAL PROSPECTING LA English DT Article AB The development of an electromagnetic numerical modelling scheme for a magnetic dipole in an arbitrary casing segment in an inhomogeneous conductivity background has been difficult, due to the very high electrical conductivity and magnetic permeability contrasts between the steel casing and the background medium. To investigate the effect of steel casing efficiently, we have developed an accurate but simple finite-element modelling scheme to simulate electromagnetic fields in a medium of cylindrically symmetric conductivity structures. In order to preserve the cylindrical symmetry in the resulting electromagnetic fields, a horizontal loop current source is used throughout. One of the main advantages of the approach is that the problem is scalar when formulated using the azimuthal electric field, even if the casing is both electrically conductive and magnetically permeable. Field calculations have been made inside the cased borehole as well as in another borehole which is not cased. Careful analyses of the numerical modelling results indicate that the anomaly observed in a cross-borehole configuration is sensitive enough to be used for tomographic imaging. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. Pukyong Natl Univ, Pusan 608737, South Korea. Geol Survey Japan, Tsukuba, Ibaraki 3058567, Japan. RP Lee, KH (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, MS 90-1116, Berkeley, CA 94720 USA. EM khlee@lbl.gov NR 9 TC 8 Z9 10 U1 0 U2 3 PU BLACKWELL PUBLISHING LTD PI OXFORD PA 9600 GARSINGTON RD, OXFORD OX4 2DG, OXON, ENGLAND SN 0016-8025 J9 GEOPHYS PROSPECT JI Geophys. Prospect. PD JAN PY 2005 VL 53 IS 1 BP 13 EP 21 DI 10.1111/j.1365-2478.2005.00455.x PG 9 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 882QZ UT WOS:000225954700002 ER PT B AU Mckenna, SA AF Mckenna, SA BE Leuangthong, O Deutsch, VC TI Evaluating techniques for multivariate classification of non-collocated spatial data SO Geostatistics Banff 2004, Vols 1 and 2 SE QUANTITATIVE GEOLOGY AND GEOSTATISTICS LA English DT Proceedings Paper CT 7th International Geostatistics Congress CY SEP 26-OCT 01, 2004 CL Banff, CANADA SP DeBeers Canada, Earth Decis Sci, Maptek Chile Ltda, Mira Geosci, Nexen Inc, Petro Canada, Placer Dome Inc, Statios LLC, Total ID VARIOGRAM AB Multivariate spatial classification schemes such as regionalized classification or principal components analysis combined with kriging rely on all variables being collocated at the sample locations. In these approaches, classification of the multivariate data into a finite number of groups is done prior to the spatial estimation. However, in some cases, the variables may be sampled at different locations with the extreme case being complete heterotopy of the data set. In these situations, it is necessary to adapt existing techniques to work with non-collocated data. Two approaches are considered: 1) kriging of existing data onto a series of "collection points" where the classification into groups is completed and a measure of the degree of group membership is kriged to all other locations; and 2) independent kriging of all attributes to all locations after which the classification is done at each location. C1 Sandia Natl Labs, Geohydrol Dept, Albuquerque, NM 87185 USA. RP Mckenna, SA (reprint author), Sandia Natl Labs, Geohydrol Dept, POB 5800 MS 0735, Albuquerque, NM 87185 USA. NR 10 TC 0 Z9 0 U1 1 U2 1 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 1-4020-3515-2 J9 QUANT GEO G PY 2005 VL 14 BP 873 EP 882 PN 1-2 PG 10 WC Geosciences, Multidisciplinary; Statistics & Probability SC Geology; Mathematics GA BDQ82 UT WOS:000234961400090 ER PT B AU Saito, H Coburn, TC Mckenna, SA AF Saito, H Coburn, TC Mckenna, SA BE Leuangthong, O Deutsch, VC TI Geostatistical noise filtering of geophysical images: Application to unexploded ordnance (UXO) sites SO Geostatistics Banff 2004, Vols 1 and 2 SE QUANTITATIVE GEOLOGY AND GEOSTATISTICS LA English DT Proceedings Paper CT 7th International Geostatistics Congress CY SEP 26-OCT 01, 2004 CL Banff, CANADA SP DeBeers Canada, Earth Decis Sci, Maptek Chile Ltda, Mira Geosci, Nexen Inc, Petro Canada, Placer Dome Inc, Statios LLC, Total AB Geostatistical and non-geostatistical noise filtering methodologies, factorial kriging and a low-pass filter, and a region growing method are applied to analytic signal magnetometer images at two UXO contaminated sites to delineate UXO target areas. Overall delineation performance is improved by removing background noise. Factorial kriging slightly outperforms the low-pass filter but there is no distinct difference between them in terms of finding anomalies of interest. C1 Sandia Natl Labs, Geohydrol Dept, Albuquerque, NM 87185 USA. RP Saito, H (reprint author), Sandia Natl Labs, Geohydrol Dept, POB 5800,MS 0735, Albuquerque, NM 87185 USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 1-4020-3515-2 J9 QUANT GEO G PY 2005 VL 14 BP 921 EP 926 PN 1-2 PG 6 WC Geosciences, Multidisciplinary; Statistics & Probability SC Geology; Mathematics GA BDQ82 UT WOS:000234961400096 ER PT S AU Edmondson, PD Donnelly, SE Birtcher, RC AF Edmondson, PD Donnelly, SE Birtcher, RC BE Pichaud, B Claverie, A Alquier, D Richter, H Kittler, M TI Amorphisation and recrystallisation of nanometre sized zones in silicon SO GETTERING AND DEFECT ENGINEERING IN SEMICONDUCTOR TECHNOLOGY XI SE SOLID STATE PHENOMENA LA English DT Article; Proceedings Paper CT 11th International Autumn Meeting on Gettering and Defect Engineering in Semiconductor Technology (GADEST 2005) CY SEP 25-30, 2005 CL Giens, FRANCE SP TECSEN, CEMES CNRS, LMP DE amorphous zones; transmission electron microscopy; ion irradiation; silicon; recrystallisation; annealing ID ISOLATED AMORPHOUS ZONES; ION IRRADIATION; DAMAGE; SI AB In this paper we present a detailed study in which the formation, by heavy ion impact, and thermal recrystallisation of individual amorphous zones have been studied using in-situ transmission electron microscopy. In agreement with previous work, we observe a reduction in the total volume of amorphous material contained within the amorphous zones following thermal annealing over a wide range of temperatures. When the evolution of the individual amorphous zones is followed, those with similar starting sizes are observed to recrystallise over a range of temperatures from 70 degrees C to 500 degrees C. The temperature at which an amorphous zone fully recrystallises does not appear to be correlated with initial size. In addition, zones are occasionally observed to increase in size temporarily on some isochronal annealing steps. Furthermore, observations during a ramp anneal show that many zones recrystallise in a stepwise manner separated by periods of stability. These phenomenon are discussed in terms of the I-V pair. C1 Univ Salford, Inst Mat Res, Salford M5 4WT, Lancs, England. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Edmondson, PD (reprint author), Univ Salford, Inst Mat Res, Salford M5 4WT, Lancs, England. EM p.d.edmondson@pgr.salford.ac.uk; s.e.donnelly@safford.ac.uk; birtcher@anl.gov RI Edmondson, Philip/G-5371-2011; Edmondson, Philip/O-7255-2014; OI Edmondson, Philip/0000-0001-8990-0870; Donnelly, Stephen/0000-0002-9749-5550 NR 12 TC 1 Z9 1 U1 0 U2 1 PU TRANS TECH PUBLICATIONS LTD PI ZURICH-UETIKON PA BRANDRAIN 6, CH-8707 ZURICH-UETIKON, SWITZERLAND SN 1012-0394 BN 3-908451-13-2 J9 SOL ST PHEN PY 2005 VL 108-109 BP 145 EP 150 PG 6 WC Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA BDL87 UT WOS:000234198300022 ER PT S AU Buonassisi, T Istratov, AA Marcus, MA Heuer, M Pickett, MD Lai, B Cai, Z Heald, SM Weber, ER AF Buonassisi, T Istratov, AA Marcus, MA Heuer, M Pickett, MD Lai, B Cai, Z Heald, SM Weber, ER BE Pichaud, B Claverie, A Alquier, D Richter, H Kittler, M TI Local measurements of diffusion length and chemical character of metal clusters in multicrystalline silicon SO GETTERING AND DEFECT ENGINEERING IN SEMICONDUCTOR TECHNOLOGY XI SE SOLID STATE PHENOMENA LA English DT Article; Proceedings Paper CT 11th International Autumn Meeting on Gettering and Defect Engineering in Semiconductor Technology (GADEST 2005) CY SEP 25-30, 2005 CL Giens, FRANCE SP TECSEN, CEMES CNRS, LMP DE copper; gettering; iron; metal impurity precipitates; nickel; solar cells; synchrotron; x-ray absorption spectroscopy; x-ray fluorescence ID X-RAY MICROPROBE; SOLAR-CELLS; POLYCRYSTALLINE SILICON; RECOMBINATION ACTIVITY; IMPURITIES; IRON AB We present a comprehensive description of synchrotron-based analytical microprobe techniques used to locally measure the diffusion length and chemical character of metal clusters in multicrystalline silicon (mc-Si) solar cell material. The techniques discussed are (a) X-ray fluorescence microscopy, capable of determining the spatial distribution, elemental nature, size, morphology, and depth of metal-rich particles as small as 30 nm in diameter; (b) X-ray absorption microspectroscopy, capable of determining the chemical states of these metal-rich precipitates, (c) X-ray beam induced current (XBIC), which maps the minority carrier recombination activity, and (d) Spectrally-resolved XBIC, which maps the minority carrier diffusion length. Sensitivity limits, optimal synchrotron characteristics, and experimental flowcharts are discussed. These techniques have elucidated the nature and effects of metal-rich particles in mc-Si and the physical mechanisms limiting metal gettering from mc-Si, and have opened several promising new research directions. C1 Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Sci Mat, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA. Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. Pacific NW Natl Lab, Richland, WA 99352 USA. RP Buonassisi, T (reprint author), Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. EM buonassisi@alumni.nd.edu; istratov@berkeley.edu; mamarcus@lbl.gov; heuer@berkeley.edu; mpickett@berkeley.edu; blai@aps.anl.gov; cai@aps.anl.gov; steve.heald@pnl.gov; weber@berkeley.edu RI Buonassisi, Tonio/J-2723-2012 NR 34 TC 26 Z9 26 U1 0 U2 5 PU TRANS TECH PUBLICATIONS LTD PI ZURICH-UETIKON PA BRANDRAIN 6, CH-8707 ZURICH-UETIKON, SWITZERLAND SN 1012-0394 BN 3-908451-13-2 J9 SOL ST PHEN PY 2005 VL 108-109 BP 577 EP 584 PG 8 WC Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA BDL87 UT WOS:000234198300091 ER PT B AU Cutler, DE AF Cutler, DE BE Farace, DJ TI Grey literature in energy: 5 years later SO GL6: Work on Grey in Progress, Conference Proceedings LA English DT Proceedings Paper CT 6th International Conference on Grey Literature (GL6) CY DEC 06-07, 2004 CL New York, NY SP New York Acad Med, INIST CNRS, Endeavor Informat Syst Inc AB At GL99, the Department of Energy's Office of Scientific and Technical Information (DOE OSTI) presented a paper titled "Grey Literature in Energy: a Shifting Paradigm, " Five years later, the paradigm continues to shift, less radically than the change from paper and microfiche to electronic, but with significant benefit to users worldwide. OSTIs efforts continue this shift, moving even further away from the connotation of 'grey' as meaning 'hard to get' literature. Along with its domestic and international partners dealing with science and energy information, OSTI serves as a leader in tools for accessing grey literature in addition to its role as a major repository. The paper will highlight the collections, tools, and partnerships that have allowed OSTI to truly bring science and energy information to the computer desktop. OSTI first and foremost partners within DOE. Energy-related grey literature residing at OSTI, along with the grey literature residing at other locations throughout the DOE complex of laboratories, is made available and searchable to the public through OSTI IT systems. While this is not new, several related developments are, including OCR steps for image data, remote indexing, and single page searching. Recently, special initiatives with Google and Yahoo/MSN in the past year have resulted in users now being able to find DOE's grey literature residing within OSTI databases when using these browsers. Providing yet a further avenue, OSTIs latest initiative involves the possibility of joining CrossRef, meaning that Digital Object Identifiers (DOI's) traditionally associated with published literature may soon be assigned to DOE's grey literature collection. Partnerships with other U.S. federal agencies have resulted in a massive collection of science-related grey literature being available through a single interface. Offered to users initially through the GrayLIT Network developed by OSTI, this has now been broadened further through the e-government success story known as Science.gov. 'Deep Web' searching allows users to go beyond the typical browser in searching web pages, down to the database and full text levels and then across U.S. government agencies. Partnerships with the International Energy Agency's Energy Technology Data Exchange (ETDE) and the International Atomic Energy Agency's International Nuclear Information System (INIS) have augmented the domestic collection into a major global resource known as ETDEWEB, managed and operated by OSTI, and the INISDB online, managed by INIS. Current OSTI and INIS efforts to convert the older microfiche collections of grey literature into electronic form will serve to advance the knowledge management and preservation initiatives of these major repositories. C1 US DOE, OSTI, Oak Ridge, TN 37830 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU TEXTRELEASE PI AMSTERDAM PA GL6 PROGRAM & CONFERENCE BUREAU, BEYSTERVELD 251, AMSTERDAM, 1083 KE, NETHERLANDS BN 90-77484-04-3 PY 2005 BP 64 EP 67 PG 4 WC Information Science & Library Science SC Information Science & Library Science GA BCO80 UT WOS:000230446900010 ER PT B AU Bolt, C AF Bolt, Chris BE Robinson, C TI Regulating London Underground SO GOVERNMENTS, COMPETITION AND UTILITY REGULATION LA English DT Article; Book Chapter C1 [Bolt, Chris] Off Rail Regulat, London, England. [Bolt, Chris] London Underground PPP Agreements, London, England. [Bolt, Chris] DoE, Washington, DC USA. [Bolt, Chris] Ofwat, Birmingham, W Midlands, England. [Bolt, Chris] ORR, London, England. [Bolt, Chris] Transco Plc, Glasgow, Lanark, Scotland. [Bolt, Chris] Lattice Grp Plc, Regulat & Publ Policy, London, England. RP Bolt, C (reprint author), Off Rail Regulat, London, England. NR 20 TC 0 Z9 0 U1 0 U2 0 PU EDWARD ELGAR PUBLISHING LTD PI CHELTENHAM PA GLENSANDA HOUSE, MONTPELLIER PARADE, CHELTENHAM GL50 1UA, GLOS, ENGLAND BN 978-1-84542-209-7 PY 2005 BP 146 EP 178 PG 33 WC Economics SC Business & Economics GA BRW47 UT WOS:000283791200014 ER PT B AU Fletcher, P AF Fletcher, Philip BE Robinson, C TI Commitment and control in regulation: the future of regulation in water CHAIRMAN'S COMMENTS SO GOVERNMENTS, COMPETITION AND UTILITY REGULATION LA English DT Editorial Material; Book Chapter C1 [Fletcher, Philip] Water Serv, Luqa, Malta. [Fletcher, Philip] PSA Serv, Markham, ON, Canada. [Fletcher, Philip] DoE, Cities & Countryside Grp, Washington, DC USA. RP Fletcher, P (reprint author), Water Serv, Luqa, Malta. NR 0 TC 0 Z9 0 U1 0 U2 0 PU EDWARD ELGAR PUBLISHING LTD PI CHELTENHAM PA GLENSANDA HOUSE, MONTPELLIER PARADE, CHELTENHAM GL50 1UA, GLOS, ENGLAND BN 978-1-84542-209-7 PY 2005 BP 199 EP 202 PG 4 WC Economics SC Business & Economics GA BRW47 UT WOS:000283791200017 ER PT S AU Prasad, L Skourikhine, AN AF Prasad, L Skourikhine, AN BE Brun, L Vento, M TI Vectorized image segmentation via trixel agglomeration SO GRAPH-BASED REPRESENTATIONS IN PATTERN RECOGNITION, PROCEEDINGS SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article; Proceedings Paper CT 5th International Workshop on Graph Based Representations in Pattern Recognition CY APR 11-13, 2005 CL Univ Poitiers, Poitiers, FRANCE SP IAPR TC15, ENSICAEN, GREYC HO Univ Poitiers AB We present a broad algorithmic framework for transforming an image comprised of pixels into a vectorized image segmented into polygons that can be subsequently used in image processing and understanding. A digital image is processed to extract edge pixel chains and a constrained Delaunay triangulation of the edge contour set is performed to yield triangles that cover the pixelated image without crossing edge contours. Each triangle is attributed a color by a Monte Carlo sampling of pixels within it. A combination of rules, each of which models an elementary perceptual grouping criterion, determines which adjacent triangles should be merged. A grouping graph is formed with vertices representing triangles and edges between vertices that correspond to adjacent triangles to be merged according to the combination of grouping rules. A connected component analysis on the grouping graph then yields collections of triangles that form polygons segmenting and vectorizing the image. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Prasad, L (reprint author), Los Alamos Natl Lab, POB 1663,MS D436, Los Alamos, NM 87545 USA. EM prasad@lanl.gov; alexei@lanl.gov NR 13 TC 5 Z9 5 U1 0 U2 1 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 3-540-25270-3 J9 LECT NOTES COMPUT SC PY 2005 VL 3434 BP 12 EP 22 PG 11 WC Computer Science, Artificial Intelligence; Computer Science, Theory & Methods SC Computer Science GA BCF73 UT WOS:000229092500002 ER PT B AU Berry, JW AF Berry, JW BE Fajtlowicz, S Fowler, PW Hansen, P Janowitz, MF Roberts, FS TI Considerations for future designers of general purpose graph software SO Graphs and Discovery SE DIMACS SERIES IN DISCRETE MATHEMATICS AND THEORETICAL COMPUTER SCIENCES LA English DT Proceedings Paper CT DIMACS-Working-Group Meeting on Computer-Generated Conjectures from Graph Theoretic and Chemical Databases CY NOV 12-16, 2001 CL Rutgers Univ, New Brunswick, NJ SP DIMACS Working Grp HO Rutgers Univ AB This short, non-technical paper summarizes the main points made by the author in a talk at DIMACS's workshop Computer Generated Conjectures from Graph Theoretic and Chemical Databases L His experience leading the LINK project should be helpful to any future non-commercial efforts to produce a freely available and general purpose graph software package. C1 Sandia Natl Labs, Discrete Math & Algorithms Grp, Albuquerque, NM 87112 USA. RP Berry, JW (reprint author), Sandia Natl Labs, Discrete Math & Algorithms Grp, POB 5800, Albuquerque, NM 87112 USA. NR 8 TC 0 Z9 0 U1 4 U2 4 PU AMER MATHEMATICAL SOC PI PROVIDENCE PA P.O. BOX 6248, PROVIDENCE, RI 02940 USA BN 0-8218-3761-3 J9 DIMACS SER DISCRET M PY 2005 VL 69 BP 1 EP 6 PG 6 WC Mathematics, Applied SC Mathematics GA BDO89 UT WOS:000234603300002 ER PT S AU Nieto, MM Turyshev, SG Anderson, JD AF Nieto, MM Turyshev, SG Anderson, JD BE Macias, A Laemmerzahl, C Nunez, D TI The pioneer anomaly: The data, its meaning, and a future test SO Gravitation and Cosmology SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd Mexican Meeting on Mathematical and Experimental Physics CY SEP 06-10, 2004 CL Mexico City, MEXICO SP Univ Autonoma Metropoitana, Consejo Nacl Ciencia Tecnol, Colegio Nacl ID MISSION AB The radio-metric Doppler tracking data from the Pioneer 10/11 spacecraft, from between 20-70 AU, yields an unambiguous and independently confirmed anomalous blue shift drift of at = (2.92 +/- 0.44) x 10(-18) s/s(2). It can be interpreted as being due to a constant acceleration of ap = (8.74 +/- 1.33) x 10(-8) cm/s(2) directed towards the Sun. No systematic effect has been able to explain the anomaly, even though such an origin is an obvious candidate. We discuss what has been learned (and what might still be learned) from the data about the anomaly, its origin, and the mission design characteristics that would be needed to test it. Future mission options are proposed. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Nieto, MM (reprint author), Los Alamos Natl Lab, Div Theoret, MS-B285, Los Alamos, NM 87545 USA. NR 18 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 0-7354-0243-4 J9 AIP CONF PROC PY 2005 VL 758 BP 113 EP 128 PG 16 WC Astronomy & Astrophysics; Physics, Multidisciplinary SC Astronomy & Astrophysics; Physics GA BCE61 UT WOS:000228865700006 ER PT J AU Lente, G Espenson, JH AF Lente, G Espenson, JH TI Oxidation of 2,4,6-trichlorophenol by hydrogen peroxide. Comparison of different iron-based catalysts SO GREEN CHEMISTRY LA English DT Article ID WATER-SOLUBLE IRON(III); OLEFIN CIS-DIHYDROXYLATION; PHOTOCATALYTIC DEGRADATION; CHLORINATED PHENOLS; AROMATIC POLLUTANTS; PORPHYRIN COMPLEX; FENTON REACTION; IONIC LIQUIDS; EPOXIDATION; H2O2 AB A systematic study of the stoichiometric and kinetic efficiencies of catalysts in the oxidation of 2,4,6-trichlorophenol by hydrogen peroxide was carried out. Six different iron-based activators were used: Fe3+(aq), Fe(TPPS)(+), cis-[(cyclam)Fe](3+), trans-[(cyclam)Fe](3+), [Fe(TPA)](2+), and [Fe(6-Me-2-TPA)(2+) (ligand abbreviations: TPPS = meso-tetra(4-sulfonatophenyl) porphine, cyclam = 1,4,8,11-tetraazacyclotetradecane, TPA = tris(2-pyridylmethyl)amine, 6-Me-2-TPA = bis[(6-methyl-2-pyridyl)methyl](2-pyridylmethyl)amine). The stoichiometric efficiencies of the catalyst were characterized by comparing the total organic carbon content, chloride ion concentration, and remaining oxidant concentration to the ideal stoichiometry where carbon dioxide, water and inorganic chloride are the only products. The kinetic efficiencies of the catalysts were compared using the rate of chloride ion formation and H2O2 consumption. It was shown that Fe(TPPS)(+) is the best catalyst. Illumination by visible light significantly enhances the rate of oxidation. C1 Univ Debrecen, Dept Inorgan & Analyt Chem, Debrecen, Hungary. Iowa State Univ, Ames Lab, Ames, IA USA. Iowa State Univ, Dept Chem, Ames, IA USA. RP Lente, G (reprint author), Univ Debrecen, Dept Inorgan & Analyt Chem, Debrecen, Hungary. EM lenteg@delfin.unideb.hu RI Lente, Gabor/H-3645-2011 NR 42 TC 29 Z9 30 U1 2 U2 38 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9262 J9 GREEN CHEM JI Green Chem. PY 2005 VL 7 IS 1 BP 28 EP 34 DI 10.1039/7411269e PG 7 WC Chemistry, Multidisciplinary; GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY SC Chemistry; Science & Technology - Other Topics GA 881SB UT WOS:000225888600005 ER PT J AU Stepinski, DC Jensen, MP Dzielawa, JA Dietz, ML AF Stepinski, DC Jensen, MP Dzielawa, JA Dietz, ML TI Synergistic effects in the facilitated transfer of metal ions into room-temperature ionic liquids SO GREEN CHEMISTRY LA English DT Article ID MODIFIED PUREX SOLVENT; CROWN-ETHER; TRIBUTYL-PHOSPHATE; EXTRACTION SYSTEMS; STRONTIUM NITRATE; BENZENE; DIBENZO-18-CROWN-6; SELECTIVITY; COMPLEXES; MECHANISM AB Addition of tri- n- butyl phosphate ( TBP) is shown to markedly increase the extraction of strontium from acidic nitrate media into certain 1- alkyl- 3- methylimidazolium bis[( trifluoromethyl) sulfonyl] imides by dicyclohexano- 18- crown- 6 ( DCH18C6), the apparent result of the formation of a synergistic adduct between the strontium- DCH18C6 complex and TBP. The magnitude of the synergistic enhancement is shown to depend on the alkyl chain length of the ionic liquid ( IL) cation, with the effect diminishing as the cation hydrophobicity increases. The effect also diminishes at high (> 50% v/ v) TBP concentrations, the likely result of changes in solvent polarity unfavorable to the extraction of metal- crown ether complexes. C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. RP Stepinski, DC (reprint author), Argonne Natl Lab, Div Chem, 9700 S Cass Ave, Argonne, IL 60439 USA. EM mdietz@anl.gov RI Jensen, Mark/G-9131-2012 OI Jensen, Mark/0000-0003-4494-6693 NR 46 TC 67 Z9 73 U1 3 U2 16 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9262 J9 GREEN CHEM JI Green Chem. PY 2005 VL 7 IS 3 BP 151 EP 158 DI 10.1039/b414756a PG 8 WC Chemistry, Multidisciplinary; GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY SC Chemistry; Science & Technology - Other Topics GA 900ML UT WOS:000227218900004 ER PT J AU Dietz, ML Stepinski, DC AF Dietz, ML Stepinski, DC TI A ternary mechanism for the facilitated transfer of metal ions into room-temperature ionic liquids (RTILs): implications for the ''greenness'' of RTILs as extraction solvents SO GREEN CHEMISTRY LA English DT Article ID CROWN-ETHERS; SELECTIVE TRANSPORT; STRONTIUM NITRATE; ORGANIC-COMPOUNDS; DICYCLOHEXYL-18-CROWN-6; SEPARATION; ACTINIDES; CATALYSIS; MEMBRANES; SYSTEMS AB Partitioning of sodium ions between aqueous nitrate media and 1-alkyl-3-methylimidazolium bis[(trifluoromethyl) sulfonyl] imides (C(n)mim(+)Tf(2)N(-)) in the presence of dicyclohexano-18-crown-6 is shown to take place via as many as three pathways: conventional nitrato complex extraction and/or either or both of two ion-exchange processes, the relative importance of which is determined by aqueous acidity and the hydrophobicity of the ionic liquid cation. Contrary to expectations, increasing the alkyl chain length of the IL cation ( from C(5)mim(+) to C(10)mim(+)) is insufficient to eliminate the possibility of ion exchange as a mode of metal ion partitioning between the two phases, an observation with negative implications for the utility of ILs as environmentally benign extraction solvents. C1 Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. RP Dietz, ML (reprint author), Argonne Natl Lab, Div Chem, 9700 S Cass Ave, Argonne, IL 60439 USA. EM mdietz@anl.gov NR 39 TC 125 Z9 134 U1 2 U2 26 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1463-9262 J9 GREEN CHEM JI Green Chem. PY 2005 VL 7 IS 10 BP 747 EP 750 DI 10.1039/b508604c PG 4 WC Chemistry, Multidisciplinary; GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY SC Chemistry; Science & Technology - Other Topics GA 967PJ UT WOS:000232103400011 ER PT J AU Tsouris, C Noonan, J Ying, TY Chin, CJ Yiacoumi, S AF Tsouris, Costas Noonan, Jeremy Ying, Tung-yu Chin, Ching-ju Yiacoumi, Sotira BE Afonso, CAM Crespo, JG TI Nanostructures in Separation SO GREEN SEPARATION PROCESSES: FUNDAMENTALS AND APPLICATIONS LA English DT Article; Book Chapter ID OXIDE MAGNETIC COMPOSITES; PARTICLES; WATER; NANOPARTICLES; ADSORPTION; FLOCCULATION; CONTAMINANTS; FILTRATION; PROTEINS; CARRIERS C1 [Tsouris, Costas] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Noonan, Jeremy; Yiacoumi, Sotira] Georgia Inst Technol, Atlanta, GA 30332 USA. [Ying, Tung-yu] Los Alamos Natl Lab, ESA AET, Los Alamos, NM 87545 USA. [Chin, Ching-ju] Natl Cent Univ, Grad Inst Environm Engn, Taipei, Taiwan. RP Tsouris, C (reprint author), Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA. NR 32 TC 0 Z9 0 U1 0 U2 0 PU BLACKWELL SCIENCE PUBL PI OXFORD PA OSNEY MEAD, OXFORD OX2 0EL, ENGLAND BN 978-3-527-60660-3 PY 2005 BP 291 EP 303 DI 10.1002/3527606602.ch3g D2 10.1002/3527606602 PG 13 WC Chemistry, Organic SC Chemistry GA BXZ52 UT WOS:000297698000017 ER PT S AU Dumitrescu, CL Raicu, L Foster, I AF Dumitrescu, CL Raicu, L Foster, I BE Zhuge, H Fox, GC TI Experiences in running workloads over Grid3 SO GRID AND COOPERATIVE COMPUTING - GCC 2005, PROCEEDINGS SE LECTURE NOTES IN COMPUTER SCIENCE LA English DT Article; Proceedings Paper CT International Symposium on Trustworthy Global Computing CY APR 07-09, 2005 CL Edinburgh, SCOTLAND AB Running workloads in a grid environment is often a challenging problem due the scale of the environment, and to the resource partitioning based on various sharing strategies. A resource may be taken down during a job execution, be improperly setup or just fail job execution. Such elements have to be taken in account whenever targeting a grid environment for execution. In this paper we explore these issues on a real grid, Grid3, by means of a specific workload, the BLAST workload, and a specific scheduling framework, GRUBER - an architecture and toolkit for resource usage service level agreement (SLA) specification and enforcement. The paper provides extensive experimental results. We address in high detail the performance of different site selection strategies of GRUBER and the overall performance in scheduling workloads in Grid3 with workload sizes ranging from 10 to 10,000 jobs. C1 Univ Chicago, Comp Sci Dept, Chicago, IL 60637 USA. Argonne Natl Lab, Math & Comp Sci Div, Argonne, IL 60439 USA. RP Dumitrescu, CL (reprint author), Univ Chicago, Comp Sci Dept, 5810 S Ellis Ave, Chicago, IL 60637 USA. EM cldumitr@cs.uchicago.edu; foster@mcs.anl.gov NR 22 TC 7 Z9 7 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0302-9743 BN 3-540-30510-6 J9 LECT NOTES COMPUT SC PY 2005 VL 3795 BP 274 EP 286 PG 13 WC Computer Science, Theory & Methods SC Computer Science GA BDQ17 UT WOS:000234857700039 ER PT J AU Bower, KM Gable, CW Zyvoloski, GA AF Bower, KM Gable, CW Zyvoloski, GA TI Grid resolution study of ground water flow and transport SO GROUND WATER LA English DT Article ID YUCCA MOUNTAIN; SATURATED ZONE; SITE; MIGRATION; MODEL AB Three-dimensional grids representing a heterogeneous, ground water system are generated at 10 different resolutions in support of a site-scale flow and transport modeling effort. These grids represent hydrostratigraphy near Yucca Mountain, Nevada, consisting of 18 stratigraphic units with contrasting fluid flow and transport properties. The grid generation method allows the stratigraphy to be modeled by numerical grids of different resolution so that comparison studies can be performed to test for grid quality and determine the resolution required to resolve geologic structure and physical processes such as fluid flow and solute transport. The process of generating numerical grids with appropriate property distributions from geologic conceptual models is automated, thus making the entire process easy to implement with fewer user-induced errors. The series of grids of various resolutions are used to assess the level at which increasing resolution no longer influences the flow and solute transport results. Grid resolution is found to be a critical issue for ground water flow and solute transport. The resolution required in a particular instance is a function of the feature size of the model, the intrinsic properties of materials, the specific physics of the problem, and boundary conditions. The asymptotic nature of results related to flow and transport indicate that for a hydrologic model of the heterogeneous hydrostratigraphy under Yucca Mountain, a horizontal grid spacing of 600 m and vertical grid spacing of 40 m resolve the hydrostratigraphic model with sufficient precision to accurately model the hypothetical flow and solute transport to within 5% of the value that would be obtained with much higher resolution. C1 Eastern Illinois Univ, Geol Geog Dept, Charleston, IL 61920 USA. RP Gable, CW (reprint author), Los Alamos Natl Lab, MS T0003, Los Alamos, NM 87545 USA. EM cfkmb1@eiu.edu; gable@lanl.gov; gaz@lanl.gov RI Gable, Carl/B-4689-2011; OI Gable, Carl/0000-0001-7063-0815 NR 30 TC 7 Z9 7 U1 0 U2 5 PU NATIONAL GROUND WATER ASSOC PI WESTERVILLE PA 601 DEMPSEY RD, WESTERVILLE, OH 43081 USA SN 0017-467X J9 GROUND WATER JI Ground Water PD JAN-FEB PY 2005 VL 43 IS 1 BP 122 EP 132 DI 10.1111/j.1745-6584.2005.tb02291.x PG 11 WC Geosciences, Multidisciplinary; Water Resources SC Geology; Water Resources GA 894OC UT WOS:000226800500015 PM 15726930 ER PT J AU Salve, R AF Salve, R TI A passive-discrete water sampler for monitoring seepage SO GROUND WATER LA English DT Article ID EXPERIMENTAL-DESIGN; DIFFUSION; TRANSPORT; MATRIX; TESTS; ROCK AB This paper presents the design of the passive-discrete water sampler (PDWS) which has been developed to facilitate investigations of flow partitioning in fractured rocks. The PDWS continuously isolates seeping water into discrete samples while monitoring the seepage rate. The PDWS was used in a flow and transport experiment that investigated fracture-matrix interactions. During the experiment, a mix of conservative tracers with significantly different diffusion coefficients (lithium bromide [LiBr] and pentafluorobenzoic acid [PFBA]) was introduced along a fault located in fractured tuffs, and water seeping through the lower end of the fault was collected by the PDWS and analyzed for tracer concentrations. Preliminary results from this investigation show that samples of effluent captured by the PDWS effectively retained temporal changes in the chemical signature, while providing seepage rates. C1 Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Salve, R (reprint author), Lawrence Berkeley Lab, Mail Stop 14-116,1 Cyclotron Rd Berkeley, Berkeley, CA 94720 USA. EM r_salve@lbl.gov NR 9 TC 1 Z9 1 U1 1 U2 3 PU NATIONAL GROUND WATER ASSOC PI WESTERVILLE PA 601 DEMPSEY RD, WESTERVILLE, OH 43081 USA SN 0017-467X J9 GROUND WATER JI Ground Water PD JAN-FEB PY 2005 VL 43 IS 1 BP 133 EP 137 DI 10.1111/j.1745-6584.2005.tb02292.x PG 5 WC Geosciences, Multidisciplinary; Water Resources SC Geology; Water Resources GA 894OC UT WOS:000226800500016 PM 15726931 ER PT B AU Jester, S AF Jester, S BE Merloni, A Nayakshin, S Sunyaev, RA TI A simple test for two accretion modes in AGN SO Growing Black Holes: Accretion in a Cosmological Context SE ESO ASTROPHYSICS SYMPOSIA LA English DT Proceedings Paper CT MPA/ESO/MPE/USM Joint Astronomy Conference on Growing Black Holes CY JUN 21-25, 2004 CL Garching, GERMANY SP MPA, ESO, MPE, USM C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Jester, S (reprint author), Fermilab Natl Accelerator Lab, MS 127,POB 500, Batavia, IL 60510 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY BN 3-540-25275-4 J9 ESO ASTROPHY SYMP PY 2005 BP 306 EP 306 DI 10.1007/11403913_56 PG 1 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BCP80 UT WOS:000230621000056 ER PT S AU Dodd, PE AF Dodd, PE BE Frazier, W Culp, RD TI Mechanisms and mitigation of single-event effects SO Guidance and Control 2005 SE ADVANCES IN THE ASTRONAUTICAL SCIENCES LA English DT Proceedings Paper CT 28th Annual AAS Rocky Mountain Guidance and Control Conference CY FEB 05-09, 2005 CL Breckenridge, CO SP Amer Astronaut Soc, Rocky Mt Chapter ID INDUCED SOFT ERRORS; INTEGRATED-CIRCUITS; CHARGE COLLECTION; CMOS SRAM; INDUCED LATCHUP; MEMORY CELLS; SEU; UPSET; DESIGN; VLSI AB Physical mechanisms responsible for single-event effects are reviewed, concentrating on silicon MOS devices and digital integrated circuits. A brief historical overview of single-event effects in space and terrestrial systems is given. Single-event upset mechanisms in SRAMs are briefly described, as is the initiation of single-event latchup in CMOS structures. Techniques for mitigating single-event effects are described, including the impact of technology trends on mitigation efficacy. Future challenges are briefly explored. C1 Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Dodd, PE (reprint author), Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 60 TC 0 Z9 0 U1 0 U2 1 PU UNIVELT INC PI SAN DIEGO PA PO BOX 28130, SAN DIEGO, CA 92128 USA SN 1081-6003 BN 0-87703-522-9 J9 ADV ASTRONAUT SCI PY 2005 VL 121 BP 357 EP 370 PG 14 WC Automation & Control Systems; Engineering, Aerospace SC Automation & Control Systems; Engineering GA BCX61 UT WOS:000231775000023 ER PT J AU Sanfilippo, A Tratz, S Gregory, M Chappell, A Whitney, P Posse, C Paulson, P Baddeley, B Hohimer, R White, A AF Sanfilippo, Antonio Tratz, Stephen Gregory, Michelle Chappell, Alan Whitney, Paul Posse, Christian Paulson, Patrick Baddeley, Bob Hohimer, Ryan White, Amanda BE Sojka, P Choi, KS Fellbaum, C Vossen, P TI Automating Ontological Annotation with WordNet SO GWC 2006: THIRD INTERNATIONAL WORDNET CONFERENCE, PROCEEDINGS LA English DT Proceedings Paper CT 3rd International Global WordNet Conference (GWC 2006) CY JAN 22-26, 2006 CL Jeju Isl, SOUTH KOREA SP Jeju Prov Local Govt, KAIST, Daum Soft, KISTI, Fujitsu, SynapSoft, Korea WISEnut, Global Network Assoc, Minist Informat & Commun AB Semantic Web applications require robust and accurate annotation tools that are capable of automating the assignment of ontological classes to words in naturally occurring text (ontological annotation). Most current ontologies do not include rich lexical databases and are therefore not easily integrated with word sense disambiguation algorithms that are needed to automate ontological annotation. WordNet provides a potentially ideal solution to this problem as it offers a highly structured lexical conceptual representation that has been extensively used to develop word sense disambiguation algorithms. However, WordNet has not been designed as an ontology, and while it can be easily turned into one, the result of doing this would present users with serious practical limitations due to the great number of concepts (synonym sets) it contains. Moreover, mapping WordNet to an existing ontology may be difficult and requires substantial labor. We propose to overcome these limitations by developing an analytical platform that (1) provides a WordNet-based ontology offering a manageable and yet comprehensive set of concept classes, (2) leverages the lexical richness of WordNet to give an extensive characterization of concept class in terms of lexical instances, and (3) integrates a class recognition algorithm that automates the assignment of concept classes to words in naturally occurring text. The ensuing framework makes available an ontological annotation platform that can be effectively integrated with intelligence analysis systems to facilitate evidence marshaling and sustain the creation and validation of inference models. C1 [Sanfilippo, Antonio; Tratz, Stephen; Gregory, Michelle; Chappell, Alan; Whitney, Paul; Posse, Christian; Paulson, Patrick; Baddeley, Bob; Hohimer, Ryan; White, Amanda] Pacific NW Natl Lab, Richland, WA 99352 USA. EM Antonio.Sanfilippo@pnl.gov; Stephen.Tratz@pnl.gov; Michelle.Gregory@pnl.gov; Alan.Chappell@pnl.gov; Paul.Whitney@pnl.gov; Christian.Posse@pnl.gov; Patrick.Paulson@pnl.gov; Bob.Baddeley@pnl.gov; Ryan.Hohimer@pnl.gov; Amanda.White@pnl.gov RI Sanfilippo, Antonio/B-6743-2016; OI Sanfilippo, Antonio/0000-0001-7097-4562; Chappell, Alan/0000-0003-0479-3223 NR 28 TC 0 Z9 0 U1 0 U2 0 PU MASARYKOVA UNIV PI BRNO PA ZENOTINOVO NAM 9, BRNO 601 77, CZECH REPUBLIC BN 978-80-210-3915-5 PY 2005 BP 85 EP 93 PG 9 WC Computer Science, Artificial Intelligence; Computer Science, Information Systems; Information Science & Library Science; Linguistics; Language & Linguistics SC Computer Science; Information Science & Library Science; Linguistics GA BMF26 UT WOS:000272085900010 ER PT J AU Huddleston, HG Wong, KK Welch, WR Berkowitz, RS Mok, SC AF Huddleston, HG Wong, KK Welch, WR Berkowitz, RS Mok, SC TI Clinical applications of microarray technology: creatine kinase B is an up-regulated gene in epithelial ovarian cancer and shows promise as a serum marker SO GYNECOLOGIC ONCOLOGY LA English DT Article DE microarray technology; creatine kinase B; ovarian cancer ID ISOENZYME LEVELS; TUMOR CYTOSOLS; IDENTIFICATION; CELLS AB Objective. (1) To identify and (2) validate genes that are up-regulated in ovarian cancer, and (3) to investigate whether the activity of a candidate gene, creatine kinase B (CKB) is elevated in pre-operative sera from ovarian cancer patients compared to patients with benign pelvic masses and normal controls. Methods. MICROMAX cDNA microarray system and RNA derived from pooled ovarian cancer cell lines and normal ovary surface epithelial cells (HOSE) were used to identify differentially expressed genes. Using RNA from both cell lines and from tissue obtained through laser capture microdissection (LCM), we performed quantitative PCR in order to validate up-regulation of one of these genes, creatine kinase B (CKB). Using a commercially available enzyme assay, CKB activity was measured in pre-operative serum samples obtained from 45 ovarian cancer patients, 49 patients with a benign pelvic mass, as well as 37 normal controls. Statistical analysis was preformed using an impaired Student's t test. Results. Microarray technology revealed that CKB gene expression had a cancer to HOSE ratio of 18. RNA levels of CKB, measured by real-time PCR, were elevated a mean (and standard error) of 36-fold (8.4) in cancer cell lines compared with HOSE cells and 22.75-fold (10.45) in microdissected ovarian cancer epithelial cells compared with normal ovarian epithelial cells. In serum, the mean standard error) of CKB enzyme activity in cancer cases was 24.7 U/L units (+/-5.1) compared to 9.6 U/L (+/-1.6) for benign mass cases (P = 0.0088) and to 8.5 U/L (1.7) for normal controls (P = 0.0096). Conclusions. Microarray technology offers a method to identify tumor biomarkers with potential clinical usefulness. Our data indicated that CKB gene expression is up-regulated in ovarian cancer cells in vitro and in vivo and that CKB enzyme activity is significantly elevated in sera from ovarian cancer patients, including those with stage 1 disease. These findings suggest a potential role for CKB as a marker for early diagnosis. (C) 2004 Elsevier Inc. All rights reserved. C1 Harvard Univ, Sch Med, Brigham & Womens Hosp, Lab Gynecol Oncol, Boston, MA 02115 USA. Pacific NW Lab, Richland, WA 99352 USA. RP Huddleston, HG (reprint author), Brigham & Womens Hosp, Dept Obstet Gynecol & Reprod Med, 75 Francis St, Boston, MA 02115 USA. EM Hehuddlston@partners.org OI Wong, Kwong-Kwok/0000-0002-0375-6669 FU NCI NIH HHS [CA86381, P50CA165009, R33CA103595] NR 18 TC 37 Z9 39 U1 0 U2 2 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0090-8258 J9 GYNECOL ONCOL JI Gynecol. Oncol. PD JAN PY 2005 VL 96 IS 1 BP 77 EP 83 DI 10.1016/j.ygyno.2004.08.047 PG 7 WC Oncology; Obstetrics & Gynecology SC Oncology; Obstetrics & Gynecology GA 883UI UT WOS:000226040800013 PM 15589584 ER PT S AU Dawson, S AF Dawson, S BE Weerts, H TI Perspectives on the standard model SO HADRON COLLIDER PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 15th Topical Conference on Hadron Collider Physics CY JUN 14-18, 2004 CL E Lansing, MI SP Michigan State Univ, Fermilab, Natl Sci Fdn ID HADRON COLLIDERS; QCD CORRECTIONS; NNLO QCD; W-W+ AB We discuss recent results from global electroweak fits and from the Tevatron and review the motivation for physics at the TeV energy scale. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. NR 43 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 0-7354-0238-8 J9 AIP CONF PROC PY 2005 VL 753 BP 3 EP 14 PG 12 WC Physics, Particles & Fields SC Physics GA BCB24 UT WOS:000228485600001 ER PT S AU Bhat, PC Spalding, WJ AF Bhat, PC Spalding, WJ BE Weerts, H TI Fermilab Collider run II: Accelerator status and upgrades SO Hadron Collider Physics SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 15th Topical Conference on Hadron Collider Physics CY JUN 14-18, 2004 CL E Lansing, MI SP Michigan State Univ, Fermilab, Natl Sci Fdn ID TOP-QUARK AB Fermilab will continue to maintain its pre-eminent position in the world of High Energy Physics, With it unique opportunity to make unprecedented studies of the top quark and major discoveries, until the Large Hadron collider (LHC) at CERN becomes operational near the end of the decade. Run II is well underway with major accelerator and detector upgrades since Run I. A program of further upgrades to the accelerator complex will result ill all integrated luminosity of 4-8 fb(-1) per experiment, by the year 2009. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Bhat, PC (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. NR 8 TC 5 Z9 5 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 0-7354-0238-8 J9 AIP CONF PROC PY 2005 VL 753 BP 30 EP 41 PG 12 WC Physics, Particles & Fields SC Physics GA BCB24 UT WOS:000228485600003 ER PT S AU Wobisch, M AF Wobisch, M CA DO Collaboration BE Weerts, H TI Recent Run II QCD results from D circle divide SO HADRON COLLIDER PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 15th Topical Conference on Hadron Collider Physics CY JUN 14-18, 2004 CL E Lansing, MI SP Michigan State Univ, Fermilab, Natl Sci Fdn ID CERN SPS COLLIDER; DIFFERENTIAL-CROSS-SECTION; PP ELASTIC-SCATTERING; SQUARE-ROOT-S; 4-MOMENTUM TRANSFER; HADRON-COLLISIONS; PBARP AB We present recent QCD results from the DO experiment at the Fermilab Tevatron Collider in p (p) over bar collisions at root s = 1.96 TeV. Results are presented for the inclusive jet and dijet cross sections. a measurement of dijet azimuthal decorrelations, studies of elastic scattering, and a search for diffractively produced Z bosons. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. NR 26 TC 3 Z9 3 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0238-8 J9 AIP CONF PROC PY 2005 VL 753 BP 92 EP 102 PG 11 WC Physics, Particles & Fields SC Physics GA BCB24 UT WOS:000228485600007 ER PT S AU Lyon, AL AF Lyon, AL CA DO and CDF Collaborations BE Weerts, H TI Electroweak physics at the tevatron with single bosons SO HADRON COLLIDER PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 15th Topical Conference on Hadron Collider Physics CY JUN 14-18, 2004 CL E Lansing, MI SP Michigan State Univ, Fermilab, Natl Sci Fdn AB The CDF and DO Run II Tevatron experiments have measure inclusive W and Z boson production cross sections with p (p) over bar collisions at root s = 1.96 TeV using leptonic decay modes. Other analyses including W charge asymmetry and forward-backward asymmetries are also described in these proceedings. Neither experiment observes deviations from Standard Model predictions. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 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 0-7354-0238-8 J9 AIP CONF PROC PY 2005 VL 753 BP 131 EP 140 PG 10 WC Physics, Particles & Fields SC Physics GA BCB24 UT WOS:000228485600010 ER PT S AU Nadolsky, PM AF Nadolsky, PM BE Weerts, H TI Theory of W and Z boson production SO HADRON COLLIDER PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 15th Topical Conference on Hadron Collider Physics CY JUN 14-18, 2004 CL E Lansing, MI SP Michigan State Univ, Fermilab, Natl Sci Fdn ID TRANSVERSE-MOMENTUM DISTRIBUTIONS; HADRON COLLIDERS; LEPTON PAIRS; RESUMMATION AB Success of precision studies in W and Z boson production at the Tevatron and LHC depends on the progress in reducing theoretical uncertainties to the level of 1 - 2%. I review recent developments in theoretical understanding of W and Z boson production and remaining issues to be solved to meet demands of the near-future experiments. C1 Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA. RP Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA. NR 48 TC 14 Z9 14 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 0-7354-0238-8 J9 AIP CONF PROC PY 2005 VL 753 BP 158 EP 170 PG 13 WC Physics, Particles & Fields SC Physics GA BCB24 UT WOS:000228485600013 ER PT S AU Campbell, J AF Campbell, J BE Weerts, H TI W/Z plus jet production SO HADRON COLLIDER PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 15th Topical Conference on Hadron Collider Physics CY JUN 14-18, 2004 CL E Lansing, MI SP Michigan State Univ, Fermilab, Natl Sci Fdn ID HADRON COLLIDERS; COLLISIONS AB We describe some recent progress in theoretical predictions for W and Z plus jet cross sections and related observables. In particular, we review some of the new NLO calculations that have been made in the last few years and analyze the impact of these results on analyses and phenomenology, at the Tevatron Run II and the CERN LHC. C1 Argonne Natl Lab, HEP Div, Argonne, IL 60439 USA. RP Argonne Natl Lab, HEP Div, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 23 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 0-7354-0238-8 J9 AIP CONF PROC PY 2005 VL 753 BP 171 EP 180 PG 10 WC Physics, Particles & Fields SC Physics GA BCB24 UT WOS:000228485600014 ER PT S AU Dobbs, M AF Dobbs, M BE Weerts, H TI Prospects for probing triple gauge-boson couplings at the LHC SO Hadron Collider Physics SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 15th Topical Conference on Hadron Collider Physics CY JUN 14-18, 2004 CL E Lansing, MI SP Michigan State Univ, Fermilab, Natl Sci Fdn ID W-PAIR PRODUCTION; E(+)E(-) INTERACTIONS; PARTON DISTRIBUTIONS; BRANCHING FRACTIONS; HADRON COLLIDERS; QCD CORRECTIONS AB In these proceedings I explore one aspect of gauge-boson physics at the LHC-Triple Gauge-boson Couplings (TGCs) in WZ and W gamma production. Methods for extracting confidence limits on anomalous TGCs are assessed, while accounting for the effects of higher order QCD corrections and contributions from other theoretical and detector related systematics. Detector response has been parametrised according to the ATLAS detector's specifications. A strategy for reporting the anomalous coupling limits is introduced which removes the ambiguities of form factors by reporting the limits its a function of a cutoff operating on the diboson system invariant mass. Techniques for measuring the energy dependence of anomalous couplings are demonstrated. C1 Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA 94720 USA. RP Dobbs, M (reprint author), Lawrence Berkeley Natl Lab, Div Phys, 1 Cyclotron Rd, Berkeley, CA 94720 USA. NR 28 TC 9 Z9 9 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0238-8 J9 AIP CONF PROC PY 2005 VL 753 BP 181 EP 192 PG 12 WC Physics, Particles & Fields SC Physics GA BCB24 UT WOS:000228485600015 ER PT S AU Tait, TMP AF Tait, TMP BE Weerts, H TI Truth (Top Theory Overview) SO HADRON COLLIDER PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 15th Topical Conference on Hadron Collider Physics CY JUN 14-18, 2004 CL E Lansing, MI SP Michigan State Univ, Fermilab, Natl Sci Fdn ID W-GLUON FUSION; CHANGING NEUTRAL CURRENTS; QUARK PRODUCTION; FERMILAB-TEVATRON; QCD CORRECTIONS; HADRON COLLIDERS; HEAVY QUARKS; DECAY; COLLISIONS; Q(Q)OVER-BAR->T(B)OVER-BAR AB The large mass of the top quark, the only fermion to have a mass of the order of the electroweak scale, makes its study very important. This large mass implies that top is important for precision electroweak physics in the Standard Model, and may be the first indication that physics beyond the Standard Model may be evident in the detailed properties of top. This report, one of the plenary talks at the HCP 2004 cofference, summaries our understanding of the top quark as of the year 2004, and shows how the current run II of the Fermilab Tevatron and the future planned CERN LHC experiments will, through detailed specific measurements, greatly improve our understanding of the top quark. C1 Fermilab Natl Accelerator Lab, Dept Theoret Phys, Batavia, IL 60510 USA. RP Fermilab Natl Accelerator Lab, Dept Theoret Phys, POB 500, Batavia, IL 60510 USA. NR 63 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 0-7354-0238-8 J9 AIP CONF PROC PY 2005 VL 753 BP 195 EP 204 PG 10 WC Physics, Particles & Fields SC Physics GA BCB24 UT WOS:000228485600016 ER PT S AU Becher, T AF Becher, T BE Weerts, H TI B-decays in the heavy-quark expansion SO HADRON COLLIDER PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 15th Topical Conference on Hadron Collider Physics CY JUN 14-18, 2004 CL E Lansing, MI SP Michigan State Univ, Fermilab, Natl Sci Fdn ID COLLINEAR EFFECTIVE THEORY; LIGHT FORM-FACTORS; QCD FACTORIZATION; MESON DECAYS; V-UB; DISTRIBUTIONS; SYMMETRY; CURRENTS; LOGARITHMS; SPECTRUM AB Progress in the theoretical description of B-meson decays, in particular decays to light hadrons, is reviewed. The factorization properties of such decays call he analyzed using the soft-collinear effective theory. Applications of the effective theory to both inclusive and exclusive decays are discussed. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. NR 58 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 0-7354-0238-8 J9 AIP CONF PROC PY 2005 VL 753 BP 291 EP 305 PG 15 WC Physics, Particles & Fields SC Physics GA BCB24 UT WOS:000228485600025 ER PT S AU Kilgore, WB AF Kilgore, WB BE Weerts, H TI The status of Higgs physics SO HADRON COLLIDER PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 15th Topical Conference on Hadron Collider Physics CY JUN 14-18, 2004 CL E Lansing, MI SP Michigan State Univ, Fermilab, Natl Sci Fdn ID HADRON-HADRON COLLISIONS; TO-LEADING ORDER; BOSON PRODUCTION; QCD CORRECTIONS; PROTON COLLIDERS; LHC; DISTRIBUTIONS; LIGHT AB There has been great progress in Higgs physics recently. Inclusive production channels have now been computed to next-to-next-to-leading order. and many associated production channels and their backgrounds have been computed to next-to-leading order. We are well positioned to discover the Higgs boson at the LHC and to make crucial first measurements of the Higgs boson couplings. C1 Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. NR 41 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 0-7354-0238-8 J9 AIP CONF PROC PY 2005 VL 753 BP 309 EP 322 PG 14 WC Physics, Particles & Fields SC Physics GA BCB24 UT WOS:000228485600026 ER PT S AU Lipton, R AF Lipton, R BE Weerts, H TI Tevatron detector upgrades SO Hadron Collider Physics SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 15th Topical Conference on Hadron Collider Physics CY JUN 14-18, 2004 CL E Lansing, MI SP Michigan State Univ, Fermilab, Natl Sci Fdn AB The DO and CDF experiments are in the process Of upgrading their detectors to cope With the high luminosities projected for the remainder of Tevatron Run II. We discuss the expected Tevatron environment through 2009, the detector challenges due to increasing luminosity in this period, and the solutions undertaken by the two experiments to mitigate detector problems and maximize physics results. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Lipton, R (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. NR 2 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0238-8 J9 AIP CONF PROC PY 2005 VL 753 BP 419 EP 425 PG 7 WC Physics, Particles & Fields SC Physics GA BCB24 UT WOS:000228485600036 ER PT S AU Green, D AF Green, D BE Weerts, H TI LHC status and upgrade SO HADRON COLLIDER PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 15th Topical Conference on Hadron Collider Physics CY JUN 14-18, 2004 CL E Lansing, MI SP Michigan State Univ, Fermilab, Natl Sci Fdn AB The LHC accelerator, as of June 2004, is on a schedule Which predicts First collisions in late 2007 and first physics running in early 2008. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP 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 0-7354-0238-8 J9 AIP CONF PROC PY 2005 VL 753 BP 437 EP 447 PG 11 WC Physics, Particles & Fields SC Physics GA BCB24 UT WOS:000228485600038 ER PT S AU Hill, CT AF Hill, CT BE Weerts, H TI Suppose we don't find SUSY? SO Hadron Collider Physics SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 15th Topical Conference on Hadron Collider Physics CY JUN 14-18, 2004 CL E Lansing, MI SP Michigan State Univ, Fermilab, Natl Sci Fdn ID SYMMETRY-BREAKING AB The Higgs boson discovery will uncover new organizing principles of physics beyond the Standard Model. This may well inaugurate supersymmetry. However. following the example of Kepler, we take a look at how other, non-supersymmetric, and seemingly ad hoc, ideas that may shape the short-distance structure beyond the SM ill unconventional and dynamical ways. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Hill, CT (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. NR 16 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0238-8 J9 AIP CONF PROC PY 2005 VL 753 BP 459 EP 472 PG 14 WC Physics, Particles & Fields SC Physics GA BCB24 UT WOS:000228485600040 ER PT J AU Manjunath, BS Haley, GM Ma, WY Newsam, SD AF Manjunath, B. S. Haley, G. M. Ma, Wei-Ying Newsam, S. D. BE Bovik, A TI Multiband Techniques for Texture Classification and Segmentation SO HANDBOOK OF IMAGE AND VIDEO PROCESSING, 2ND EDITION LA English DT Article; Book Chapter ID MARKOV RANDOM-FIELDS; GIBBS RANDOM-FIELDS; IMAGE; FILTERS; WAVELET; VISION; MODELS; SPACE; DISCRIMINATION; TRANSFORMS C1 [Manjunath, B. S.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA. [Ma, Wei-Ying] Microsoft Res Asia, Beijing, Peoples R China. [Newsam, S. D.] Lawrence Livermore Natl Lab, Livermore, CA USA. RP Manjunath, BS (reprint author), Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA. NR 46 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS BN 978-0-08-053361-2 PY 2005 BP 455 EP 470 DI 10.1016/B978-012119792-6/50091-7 PG 16 WC Engineering, Electrical & Electronic; Imaging Science & Photographic Technology SC Engineering; Imaging Science & Photographic Technology GA BCW64 UT WOS:000311698300028 ER PT S AU Sounart, TL Safier, PA Baygents, JC AF Sounart, T. L. Safier, P. A. Baygents, J. C. BE Garfin, D Ahuja, S TI THEORY AND SIMULATION OF ISOELECTRIC FOCUSING SO HANDBOOK OF ISOELECTRIC FOCUSING AND PROTEOMICS SE Separation Science and Technology LA English DT Article; Book Chapter ID NATURAL PH GRADIENTS; RESOLUTION COMPUTER-SIMULATION; ELECTROPHORETIC SEPARATIONS; CARRIER AMPHOLYTES; FRACTIONATION; DYNAMICS; EQUATION; SYSTEMS; FLOW C1 [Sounart, T. L.] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Safier, P. A.; Baygents, J. C.] Univ Arizona, Dept Chem & Environm Engn, Tucson, AZ 85721 USA. RP Sounart, TL (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 24 TC 5 Z9 5 U1 0 U2 0 PU ELSEVIER ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA SN 1877-1718 BN 978-0-08-053362-9 J9 SEP SCI TECHNOL-SER PY 2005 VL 7 BP 41 EP 68 PG 28 WC Biochemical Research Methods; Biochemistry & Molecular Biology; Chemistry, Analytical SC Biochemistry & Molecular Biology; Chemistry GA BDA02 UT WOS:000312255000005 ER PT J AU Nakamura, T Heilbronn, LH AF Nakamura, Takashi Heilbronn, Lawrence H. BA Nakamura, T Heilbronn, L BF Nakamura, T Heilbronn, L TI Handbook on Secondary Particle Production and Transport by High-Energy Heavy Ions (with CD-Rom) Introduction SO HANDBOOK ON SECONDARY PARTICLE PRODUCTION AND TRANSPORT BY HIGH-ENERGY HEAVY IONS (WITH CD-ROM) LA English DT Editorial Material; Book Chapter C1 [Nakamura, Takashi] Tohoku Univ, Ctr Cyclotron & Radioisotope, Sendai, Miyagi 980, Japan. [Nakamura, Takashi] Tohoku Univ, Grad Sch Engn, Sendai, Miyagi 980, Japan. [Heilbronn, Lawrence H.] Univ Calif, Lawrence Berkeley Lab, Berkeley, CA USA. RP Nakamura, T (reprint author), Tohoku Univ, Ctr Cyclotron & Radioisotope, Sendai, Miyagi 980, Japan. RI Heilbronn, Lawrence/J-6998-2013 OI Heilbronn, Lawrence/0000-0002-8226-1057 NR 0 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 978-9-81270-314-9 PY 2005 BP 1 EP 9 D2 10.1142/9789812703149 PG 9 WC Physics, Nuclear SC Physics GA BZA95 UT WOS:000300955700002 ER PT J AU Nakamura, T Heilbronn, LH AF Nakamura, Takashi Heilbronn, Lawrence H. BA Nakamura, T Heilbronn, L BF Nakamura, T Heilbronn, L TI Handbook on Secondary Particle Production and Transport by High-Energy Heavy Ions (with CD-Rom) Preface SO HANDBOOK ON SECONDARY PARTICLE PRODUCTION AND TRANSPORT BY HIGH-ENERGY HEAVY IONS (WITH CD-ROM) LA English DT Editorial Material; Book Chapter C1 [Nakamura, Takashi] Tohoku Univ, Ctr Cyclotron & Radioisotope, Sendai, Miyagi 980, Japan. [Nakamura, Takashi] Tohoku Univ, Grad Sch Engn, Sendai, Miyagi 980, Japan. [Heilbronn, Lawrence H.] Univ Calif, Lawrence Berkeley Lab, Berkeley, CA USA. RP Nakamura, T (reprint author), Tohoku Univ, Ctr Cyclotron & Radioisotope, Sendai, Miyagi 980, Japan. RI Heilbronn, Lawrence/J-6998-2013 OI Heilbronn, Lawrence/0000-0002-8226-1057 NR 0 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 978-9-81270-314-9 PY 2005 BP V EP + D2 10.1142/9789812703149 PG 9 WC Physics, Nuclear SC Physics GA BZA95 UT WOS:000300955700001 ER PT J AU Nakamura, T Heilbronn, LH AF Nakamura, Takashi Heilbronn, Lawrence H. BA Nakamura, T Heilbronn, L BF Nakamura, T Heilbronn, L TI Secondary Neutron Yields from Thick Targets SO HANDBOOK ON SECONDARY PARTICLE PRODUCTION AND TRANSPORT BY HIGH-ENERGY HEAVY IONS (WITH CD-ROM) LA English DT Article; Book Chapter C1 [Nakamura, Takashi] Tohoku Univ, Ctr Cyclotron & Radioisotope, Sendai, Miyagi 980, Japan. [Nakamura, Takashi] Tohoku Univ, Grad Sch Engn, Sendai, Miyagi 980, Japan. [Heilbronn, Lawrence H.] Univ Calif, Lawrence Berkeley Lab, Berkeley, CA USA. RP Nakamura, T (reprint author), Tohoku Univ, Ctr Cyclotron & Radioisotope, Sendai, Miyagi 980, Japan. RI Heilbronn, Lawrence/J-6998-2013 OI Heilbronn, Lawrence/0000-0002-8226-1057 NR 0 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 978-9-81270-314-9 PY 2005 BP 10 EP 59 DI 10.1142/9789812703149_0002 D2 10.1142/9789812703149 PG 50 WC Physics, Nuclear SC Physics GA BZA95 UT WOS:000300955700003 ER PT J AU Nakamura, T Heilbronn, LH AF Nakamura, Takashi Heilbronn, Lawrence H. BA Nakamura, T Heilbronn, L BF Nakamura, T Heilbronn, L TI Secondary Neutron Production Cross Sections SO HANDBOOK ON SECONDARY PARTICLE PRODUCTION AND TRANSPORT BY HIGH-ENERGY HEAVY IONS (WITH CD-ROM) LA English DT Article; Book Chapter C1 [Nakamura, Takashi] Tohoku Univ, Ctr Cyclotron & Radioisotope, Sendai, Miyagi 980, Japan. [Nakamura, Takashi] Tohoku Univ, Grad Sch Engn, Sendai, Miyagi 980, Japan. [Heilbronn, Lawrence H.] Univ Calif, Lawrence Berkeley Lab, Berkeley, CA USA. RP Nakamura, T (reprint author), Tohoku Univ, Ctr Cyclotron & Radioisotope, Sendai, Miyagi 980, Japan. RI Heilbronn, Lawrence/J-6998-2013 OI Heilbronn, Lawrence/0000-0002-8226-1057 NR 0 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 978-9-81270-314-9 PY 2005 BP 60 EP 117 DI 10.1142/9789812703149_0003 D2 10.1142/9789812703149 PG 58 WC Physics, Nuclear SC Physics GA BZA95 UT WOS:000300955700004 ER PT J AU Nakamura, T Heilbronn, LH AF Nakamura, Takashi Heilbronn, Lawrence H. BA Nakamura, T Heilbronn, L BF Nakamura, T Heilbronn, L TI Measurements of HZE Neutrons Behind Shielding SO HANDBOOK ON SECONDARY PARTICLE PRODUCTION AND TRANSPORT BY HIGH-ENERGY HEAVY IONS (WITH CD-ROM) LA English DT Article; Book Chapter C1 [Nakamura, Takashi] Tohoku Univ, Ctr Cyclotron & Radioisotope, Sendai, Miyagi 980, Japan. [Nakamura, Takashi] Tohoku Univ, Grad Sch Engn, Sendai, Miyagi 980, Japan. [Heilbronn, Lawrence H.] Univ Calif, Lawrence Berkeley Lab, Berkeley, CA USA. RP Nakamura, T (reprint author), Tohoku Univ, Ctr Cyclotron & Radioisotope, Sendai, Miyagi 980, Japan. RI Heilbronn, Lawrence/J-6998-2013 OI Heilbronn, Lawrence/0000-0002-8226-1057 NR 0 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 978-9-81270-314-9 PY 2005 BP 118 EP 142 DI 10.1142/9789812703149_0004 D2 10.1142/9789812703149 PG 25 WC Physics, Nuclear SC Physics GA BZA95 UT WOS:000300955700005 ER PT J AU Nakamura, T Heilbronn, LH AF Nakamura, Takashi Heilbronn, Lawrence H. BA Nakamura, T Heilbronn, L BF Nakamura, T Heilbronn, L TI Production Cross Sections of Spallation Products Created in Heavy-Ion Reactions SO HANDBOOK ON SECONDARY PARTICLE PRODUCTION AND TRANSPORT BY HIGH-ENERGY HEAVY IONS (WITH CD-ROM) LA English DT Article; Book Chapter C1 [Nakamura, Takashi] Tohoku Univ, Ctr Cyclotron & Radioisotope, Sendai, Miyagi 980, Japan. [Nakamura, Takashi] Tohoku Univ, Grad Sch Engn, Sendai, Miyagi 980, Japan. [Heilbronn, Lawrence H.] Univ Calif, Lawrence Berkeley Lab, Berkeley, CA USA. RP Nakamura, T (reprint author), Tohoku Univ, Ctr Cyclotron & Radioisotope, Sendai, Miyagi 980, Japan. RI Heilbronn, Lawrence/J-6998-2013 OI Heilbronn, Lawrence/0000-0002-8226-1057 NR 0 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 978-9-81270-314-9 PY 2005 BP 143 EP 174 DI 10.1142/9789812703149_0005 D2 10.1142/9789812703149 PG 32 WC Physics, Nuclear SC Physics GA BZA95 UT WOS:000300955700006 ER PT J AU Nakamura, T Heilbronn, LH AF Nakamura, Takashi Heilbronn, Lawrence H. BA Nakamura, T Heilbronn, L BF Nakamura, T Heilbronn, L TI Moving-Source Parameterizations of Secondary Neutron Production SO HANDBOOK ON SECONDARY PARTICLE PRODUCTION AND TRANSPORT BY HIGH-ENERGY HEAVY IONS (WITH CD-ROM) LA English DT Article; Book Chapter C1 [Nakamura, Takashi] Tohoku Univ, Ctr Cyclotron & Radioisotope, Sendai, Miyagi 980, Japan. [Nakamura, Takashi] Tohoku Univ, Grad Sch Engn, Sendai, Miyagi 980, Japan. [Heilbronn, Lawrence H.] Univ Calif, Lawrence Berkeley Lab, Berkeley, CA USA. RP Nakamura, T (reprint author), Tohoku Univ, Ctr Cyclotron & Radioisotope, Sendai, Miyagi 980, Japan. RI Heilbronn, Lawrence/J-6998-2013 OI Heilbronn, Lawrence/0000-0002-8226-1057 NR 0 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 978-9-81270-314-9 PY 2005 BP 175 EP 197 DI 10.1142/9789812703149_0006 D2 10.1142/9789812703149 PG 23 WC Physics, Nuclear SC Physics GA BZA95 UT WOS:000300955700007 ER PT J AU Nakamura, T Heilbronn, LH AF Nakamura, Takashi Heilbronn, Lawrence H. BA Nakamura, T Heilbronn, L BF Nakamura, T Heilbronn, L TI Handbook on Secondary Particle Production and Transport by High-Energy Heavy Ions (with CD-Rom) Conclusion SO HANDBOOK ON SECONDARY PARTICLE PRODUCTION AND TRANSPORT BY HIGH-ENERGY HEAVY IONS (WITH CD-ROM) LA English DT Editorial Material; Book Chapter C1 [Nakamura, Takashi] Tohoku Univ, Ctr Cyclotron & Radioisotope, Sendai, Miyagi 980, Japan. [Nakamura, Takashi] Tohoku Univ, Grad Sch Engn, Sendai, Miyagi 980, Japan. [Heilbronn, Lawrence H.] Univ Calif, Lawrence Berkeley Lab, Berkeley, CA USA. RP Nakamura, T (reprint author), Tohoku Univ, Ctr Cyclotron & Radioisotope, Sendai, Miyagi 980, Japan. RI Heilbronn, Lawrence/J-6998-2013 OI Heilbronn, Lawrence/0000-0002-8226-1057 NR 0 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 978-9-81270-314-9 PY 2005 BP 198 EP 198 DI 10.1142/9789812703149_0007 D2 10.1142/9789812703149 PG 1 WC Physics, Nuclear SC Physics GA BZA95 UT WOS:000300955700008 ER PT J AU Nakamura, T Heilbronn, LH AF Nakamura, Takashi Heilbronn, Lawrence H. BA Nakamura, T Heilbronn, L BF Nakamura, T Heilbronn, L TI Application of Data to Benchmark Transport Model Calculations SO HANDBOOK ON SECONDARY PARTICLE PRODUCTION AND TRANSPORT BY HIGH-ENERGY HEAVY IONS (WITH CD-ROM) LA English DT Article; Book Chapter C1 [Nakamura, Takashi] Tohoku Univ, Ctr Cyclotron & Radioisotope, Sendai, Miyagi 980, Japan. [Nakamura, Takashi] Tohoku Univ, Grad Sch Engn, Sendai, Miyagi 980, Japan. [Heilbronn, Lawrence H.] Univ Calif, Lawrence Berkeley Lab, Berkeley, CA USA. RP Nakamura, T (reprint author), Tohoku Univ, Ctr Cyclotron & Radioisotope, Sendai, Miyagi 980, Japan. RI Heilbronn, Lawrence/J-6998-2013 OI Heilbronn, Lawrence/0000-0002-8226-1057 NR 0 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 978-9-81270-314-9 PY 2005 BP 199 EP 215 D2 10.1142/9789812703149 PG 17 WC Physics, Nuclear SC Physics GA BZA95 UT WOS:000300955700009 ER PT S AU Gschneidner, KA Bunzli, JCG Pecharsky, VK AF Gschneidner, Karl A., Jr. Buenzli, Jean-Claude G. Pecharsky, Vitalij K. BE Gschneidner, KA Bunzli, JCG Pecharsky, VK TI HANDBOOK ON THE PHYSICS AND CHEMISTRY OF RARE EARTHS VOLUME 35 PREFACE SO HANDBOOK ON THE PHYSICS AND CHEMISTRY OF RARE EARTHS, VOL 35 SE Handbook on the Physics and Chemistry of Rare Earths LA English DT Editorial Material; Book Chapter C1 [Gschneidner, Karl A., Jr.; Pecharsky, Vitalij K.] US DOE, Ames Lab, Ames, IA 50011 USA. [Gschneidner, Karl A., Jr.; Pecharsky, Vitalij K.] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA. [Buenzli, Jean-Claude G.] Swiss Fed Inst Technol, Inst Mol & Biol Chem, CH-1015 Lausanne, Switzerland. RP Gschneidner, KA (reprint author), US DOE, Ames Lab, Ames, IA 50011 USA. NR 0 TC 7 Z9 7 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1573-4366 BN 978-0-08-046102-1 J9 HBK PHYS CHEM RARE PY 2005 VL 35 BP V EP IX DI 10.1016/S0168-1273(05)35005-7 PG 5 WC Chemistry, Applied SC Chemistry GA BCS74 UT WOS:000311294800001 ER PT S AU Mascarenas, DDL Park, G Farrar, CR AF Mascarenas, DDL Park, G Farrar, CR BE Kundu, T TI Monitoring of bolt preload using piezoelectric active devices SO Health Monitoring and Smart Nondestructive Evaluation of Structural and Biological Systems IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Health Monitoring and Smart Nondestructive Evaluation of Structural and Biological Systems IV CY MAR 07-09, 2005 CL San Diego, CA SP SPIE DE bolted joints; structural health monitoring; piezoelectric materials; impedance method; active-sensing systems AB It is estimated that 70% of all mechanical failures are related to fastener failure. One important mode of fastener failure is self-loosening of bolted joints. Self-loosening is especially problematic when the bolted joint is in an inaccessible location, a hostile environment, or a part of a machine whose shutdown would be costly. In this study, a piezoelectric (P2T) active-sensing device was used to detect the self-loosening mode in bolted joint connections. PZT enhanced washers were used to continuously monitor the condition of the joint by monitoring its dynamic characteristics. Re mechanical impedance matching between the PZT enhanced devices and the joint connections was used as a key feature to monitor the preload changes and prevent further failure. The dynamic response was readily measured using electromechanical coupling property of the PZT patch, in which its electrical impedance is coupled with the mechanical impedance of the structure. This paper summarizes experimental results, the considerations needed in experimental procedures and design and several issues that can be used as a guideline for future investigation. C1 Los Alamos Natl Lab, Engn Sci & Applicat Weapons Response Grp, Los Alamos, NM 87545 USA. RP Mascarenas, DDL (reprint author), Los Alamos Natl Lab, Engn Sci & Applicat Weapons Response Grp, POB 1663, Los Alamos, NM 87545 USA. RI Farrar, Charles/C-6954-2012 NR 9 TC 4 Z9 4 U1 0 U2 5 PU SPIE-INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA SN 0277-786X BN 0-8194-5749-3 J9 P SOC PHOTO-OPT INS PY 2005 VL 5768 BP 129 EP 136 DI 10.1117/12.604512 PG 8 WC Engineering, Civil; Instruments & Instrumentation; Materials Science, Characterization & Testing; Optics SC Engineering; Instruments & Instrumentation; Materials Science; Optics GA BCO19 UT WOS:000230386200014 ER PT S AU Hundhausen, RJ Adams, DE Derriso, MM AF Hundhausen, RJ Adams, DE Derriso, MM BE Kundu, T TI Identification of damage in a standoff metallic thermal protection system panel subjected to combined thermo-acoustic excitation SO Health Monitoring and Smart Nondestructive Evaluation of Structural and Biological Systems IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Health Monitoring and Smart Nondestructive Evaluation of Structural and Biological Systems IV CY MAR 07-09, 2005 CL San Diego, CA SP SPIE DE thermal protection system; damage identification; structural health monitoring; condition based management AB The thermal protection system is an essential part of any launch vehicle. Standoff metallic thermal protection system (TPS) panels protect the vehicle from the hostile environment on the panel exterior; consequently, the panels are exposed to a variety A loads including high temperature thermal stresses, thermal shock, acoustic pressure, and foreign object impact. These loads can cause degradation in the health of mechanically attached metallic TPS panels in the form of, for example, face sheet buckling, deformation/cracking of standoff bolts and standoffs or wrinkling to thermal sea's. In this work, two sets of experiments were performed. The first experiment aimed to partially recreate the acoustic environment that the TPS experiences during service by subjecting the panel to broadband noise broadcast from a loudspeaker. In this set of experiments, "damage" was introduced into the TPS by loosening standoff fasteners to represent cracked or warped bolts and a transmissibility-based damage index was implemented to detect and locate damage. The second experiment was designed to examine the variation in damage indices when the panel is subjected to combined thermo-acoustic loading. In this set of experiments, the panel was not subjected to any '"damage"; instead, the exterior of the panel was heated with an infrared heat lamp while being excited by acoustic noise. It is demonstrated that the transmissibility-based damage indicator is a viable method for detecting and locating damage in the TPS panel. it is also shown that damage present in the panel may become more or less identifiable while the system is subjected to thermal loading. This paper was approved for unlimited public release on February 18, 2005; LA-UR-05-1192. C1 Los Alamos Natl Lab, Engn Sci & Applicat Weapon Response Grp, Los Alamos, NM 87545 USA. RP Hundhausen, RJ (reprint author), Los Alamos Natl Lab, Engn Sci & Applicat Weapon Response Grp, MS T001, Los Alamos, NM 87545 USA. NR 14 TC 0 Z9 0 U1 0 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 0-8194-5749-3 J9 P SOC PHOTO-OPT INS PY 2005 VL 5768 BP 145 EP 156 DI 10.1117/12.601586 PG 12 WC Engineering, Civil; Instruments & Instrumentation; Materials Science, Characterization & Testing; Optics SC Engineering; Instruments & Instrumentation; Materials Science; Optics GA BCO19 UT WOS:000230386200016 ER PT S AU Kamae, T AF Kamae, T BE Aharonian, FA Volk, HJ Horns, D TI Future GeV gamma-ray missions and new discovery potential SO High Energy Gamma-Ray Astronomy SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd International Symposium on High Energy Gamma-Ray Astronomy CY JUL 26-30, 2004 CL Heidelberg, GERMANY SP Max-Planck Soc, German Fed Minist Educ Res, Deutsch Forsch Gemeinsch ID EGRET OBSERVATIONS; INVERSE COMPTON; CRAB PULSAR; EMISSION; SPECTRUM; COUNTERPARTS; CASSIOPEIA; CATALOG; NEBULA; GALAXY AB Future GeV gamma-ray missions, efforts to improve the diffuse gamma-ray emission modeling, and possible exploitation of temporal variability for source characterization are reviewed. GLAST-LAT with its improved point-spread-function is expected to attain mCrab sensitivity, facilitate identification Of gamma-ray sources with those in other wavelength, and discover new source classes. However these new sources are likely to suffer from the Galactic diffuse background and/or the source confusion. Accurate modeling of the background will be essential to enhance discovery potential for Galactic sources and full exploitation of temporal variability will allow source identification even in highly confusing environment. GALPROP by Strong and Moskalenko provides a platform on which models and measurements on the cosmic ray, ISM and radiation field can be combined in a consistent way. An up-to-date high-energy pp interaction modeling has reduced the "GeV Excess" in the diffuse gamma-ray spectrum significantly. Updating GALPROP with this interaction modeling as well as with other improvements will be needed before GLAST goes to orbit. The new temporal domain will be fully explored by GLAST-LAT as a new way to identify and characterize AGNs at cosmological distance. C1 Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94305 USA. RP Kamae, T (reprint author), Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94305 USA. NR 41 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 0-7354-0229-9 J9 AIP CONF PROC PY 2005 VL 745 BP 210 EP 221 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BCA30 UT WOS:000228449000019 ER PT S AU Sinnis, G AF Sinnis, G CA HAWC Collaboration BE Aharonian, FA Volk, HJ Horns, D TI HAWC: A next generation VHE all-sky telescope SO High Energy Gamma-Ray Astronomy SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd International Symposium on High Energy Gamma-Ray Astronomy CY JUL 26-30, 2004 CL Heidelberg, GERMANY SP Max-Planck Soc, German Fed Minist Educ Res, Deutsch Forsch Gemeinsch ID TEV GAMMA-RAYS; CRAB-NEBULA; SPECTRUM; SYSTEM; ARRAY AB The study of the universe at energies above 100 GeV is a relatively new and exciting field. The current generation of pointed instruments have detected TeV gamma rays from at least 10 sources and the next generation of detectors promises a large increase in sensitivity. We have also seen the development of a new type of all-sky monitor in this energy regime based on water Cherenkov technology (Milagro). To fully understand the universe at these extreme energies requires a highly sensitive detector capable of continuously monitoring the entire overhead sky. Such an instrument Could observe prompt emission from gamma-ray bursts and probe the limits of Lorentz invariance at high energies. With sufficient sensitivity it could detect short transients (similar to 15 minutes) from active galaxies and study the time structure of flares at energies unattainable to space-based instruments. Unlike pointed instruments a wide-field instrument can make an unbiased study of all active galaxies and enable many multi-wavelength campaigns to study these objects. This paper describes the design and performance of a next generation water Cherenkov detector. To attain a low energy threshold and have high sensitivity the detector should be located at high altitude (> 4 km) and have a large area (similar to 40,000 m(2)). Such an instrument could detect gamma ray bursts beyond a redshift of 1, observe flares from active galaxies as short as 15 minutes in duration. and Survey the overhead sky at a level similar to 30 mCrab in one year. C1 Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA. RP Sinnis, G (reprint author), Los Alamos Natl Lab, Div Phys, POB 1663, Los Alamos, NM 87545 USA. NR 19 TC 10 Z9 10 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 0-7354-0229-9 J9 AIP CONF PROC PY 2005 VL 745 BP 234 EP 245 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BCA30 UT WOS:000228449000021 ER PT J AU Zhu, SJ Zhang, Z Hamilton, JH Ramayya, AV Hwang, JK Xiao, SD Che, XL Yu, YN Li, ML Zhen, RC Lee, IY Rasmussen, JO Ma, WC AF Zhu, SJ Zhang, Z Hamilton, JH Ramayya, AV Hwang, JK Xiao, SD Che, XL Yu, YN Li, ML Zhen, RC Lee, IY Rasmussen, JO Ma, WC TI Further research on level structures of neutron-rich odd-A Ru nuclei SO HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION LA Chinese DT Article DE nuclear structure; collective band; life time of level; rotor plus particle model ID COLLECTIVE BANDS AB Through analyzing the data with high statistics from measuring high-fold prompt gamma-ray coincidence events following the spontaneous fission of Cf-252 with the Gammasphere detector array. the level schemes in neutron-rich odd-A(109.111)Ru nuclei have been extended up to higher spin states. Based on the data analysis of the coincidence matrices with different delay times 1 the fife times for many low excited levels have been obtained in Ru-107,Ru-109,Ru-111,Ru-113 nuclei, among them, the 96.4 KeV level in Ru-109 is an isomer with life time value 1300ns. It is shows that the observed backbending in the yrast band of the neighboring even-even Ru-110 is indeed originated front the alignment of a pair of neutrons through analyzing the moments of inertia J((1))vs. rotational frequencies homega of the observed collective bands in Ru-107,Ru-109 nuclei. Triaxial rotor plus particle model has been employed to calculate some levels of the collective bands as well as the B(M1)/B(E2) values. The calculated results basically accord with the experimental ones. C1 Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA. Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Mississippi State Univ, Dept Phys, Mississippi State, MS 39762 USA. RP Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China. EM zhushj@mail.tsinghua.edu.cn NR 15 TC 4 Z9 4 U1 0 U2 1 PU SCIENCE PRESS PI BEIJING PA 16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA SN 0254-3052 J9 HIGH ENERG PHYS NUC JI High Energy Phys. Nucl. Phys.-Chin. Ed. PD JAN PY 2005 VL 29 IS 1 BP 23 EP 27 PG 5 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 888DD UT WOS:000226353500006 ER PT S AU Roser, T AF Roser, T BE Hofmann, I Hasse, RW Lagniel, JM TI Plans for future megawatt facilities SO High Intensity and High Brightness Hadron Beams SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 33rd ICFA Advanced Beam Dynamics Workshop on High Intensity and High Brightness Hadron Beams CY OCT 18-22, 2004 CL Bensheim, GERMANY SP GSI, CEA, FZJ AB Proton accelerators producing beam powers of up to I MW are presently either operating or under construction and designs for Multi-Megawatt facilities are being developed. High beam power has applications in the production of high intensity secondary beams of neutrons, muons, kaons and neutrinos as well as in nuclear waste transmutation and accelerator-driven sub-critical reactors. Each of these applications has additional requirements on beam energy and duty cycle. This paper will review how present designs for future Multi-Megawatt facilities meet these requirements and will also review the experience with present high power facilities. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Roser, T (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0258-2 J9 AIP CONF PROC PY 2005 VL 773 BP 11 EP 15 PG 5 WC Physics, Particles & Fields SC Physics GA BCO89 UT WOS:000230453400003 ER PT S AU Mason, TE Abernathy, D Ankner, J Ekkebus, A Granroth, G Hagen, M Herwig, K Hoffmann, C Horak, C Klose, F Miller, S Neuefeind, J Tulk, C Wang, XL AF Mason, TE Abernathy, D Ankner, J Ekkebus, A Granroth, G Hagen, M Herwig, K Hoffmann, C Horak, C Klose, F Miller, S Neuefeind, J Tulk, C Wang, XL BE Hofmann, I Hasse, RW Lagniel, JM TI The Spallation Neutron Source: A powerful tool for materials research SO High Intensity and High Brightness Hadron Beams SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 33rd ICFA Advanced Beam Dynamics Workshop on High Intensity and High Brightness Hadron Beams CY OCT 18-22, 2004 CL Bensheim, GERMANY SP GSI, CEA, FZJ AB The wavelengths and energies of thermal and cold neutrons are ideally matched to the length and energy scales in the materials that underpin technologies of the present and future: ranging from semiconductors to magnetic devices, composites to biomaterials and polymers. The Spallation Neutron Source will use an accelerator to produce the most intense beams of neutrons in the world when it is complete in 2006. The project is being built by a collaboration of six U.S. Department of Energy laboratories. It will serve a diverse community of users drawn from academia, industry, and government tabs with interests in condensed matter physics, chemistry, engineering materials, biology, and beyond. C1 Oak Ridge Natl Lab, Spallat Neutron Source, Oak Ridge, TN 37830 USA. RP Mason, TE (reprint author), Oak Ridge Natl Lab, Spallat Neutron Source, Oak Ridge, TN 37830 USA. RI Herwig, Kenneth/F-4787-2011; Wang, Xun-Li/C-9636-2010; Abernathy, Douglas/A-3038-2012; Mason, Thomas/M-5809-2014; Neuefeind, Joerg/D-9990-2015; Granroth, Garrett/G-3576-2012; Tulk, Chris/R-6088-2016; OI Wang, Xun-Li/0000-0003-4060-8777; Abernathy, Douglas/0000-0002-3533-003X; Mason, Thomas/0000-0003-1880-3971; Neuefeind, Joerg/0000-0002-0563-1544; Granroth, Garrett/0000-0002-7583-8778; Tulk, Chris/0000-0003-3400-3878; Ankner, John/0000-0002-6737-5718 NR 0 TC 9 Z9 9 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 0-7354-0258-2 J9 AIP CONF PROC PY 2005 VL 773 BP 21 EP 25 PG 5 WC Physics, Particles & Fields SC Physics GA BCO89 UT WOS:000230453400005 ER PT S AU Drees, A Fliller, R Fu, W AF Drees, A Fliller, R Fu, W BE Hofmann, I Hasse, RW Lagniel, JM TI RHIC loss limitations and collimation SO High Intensity and High Brightness Hadron Beams SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 33rd ICFA Advanced Beam Dynamics Workshop on High Intensity and High Brightness Hadron Beams CY OCT 18-22, 2004 CL Bensheim, GERMANY SP GSI, CEA, FZJ DE collimation; beam loss; background; activation AB In the shutdown between the RHIC run 2003 and 2004 three additional collimators were installed in each of the RHIC rings. The new collimators are all single plane copper scrapers of 0.45 m length. Since the existing primary collimators are dual plane a total of five scrapers per ring is now available. The total intensity of the heavy ion beams increased considerably compared to the previous runs. With the intensity the need of experiments for background reduction increased as well. In particular the PHENIX detector with its large forward Muon Identification detectors is sensitive to high background rates. In addition to experimental backgrounds loss limitations in RHIC come from quench limits of the superconduction magnets and environmental considerations. The fully automated collimator steering control is based on feedback from both, local loss monitors and detector background signals. This paper presents the upgraded RHIC collimation system, the collimator control software and the achieved results. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Drees, A (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 7 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0258-2 J9 AIP CONF PROC PY 2005 VL 773 BP 55 EP 59 PG 5 WC Physics, Particles & Fields SC Physics GA BCO89 UT WOS:000230453400011 ER PT S AU Aleksandrov, A Assadi, S Campisi, I Chu, P Cousineau, S Danilov, V Dodson, BG Galambos, J Jeon, D Henderson, S Holtkamp, N Kravchuk, L Kim, S Plum, M Tanke, E Stockli, M AF Aleksandrov, A Assadi, S Campisi, I Chu, P Cousineau, S Danilov, V Dodson, BG Galambos, J Jeon, D Henderson, S Holtkamp, N Kravchuk, L Kim, S Plum, M Tanke, E Stockli, M BE Hofmann, I Hasse, RW Lagniel, JM TI Commissioning experience for the SNS Linac SO High Intensity and High Brightness Hadron Beams SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 33rd ICFA Advanced Beam Dynamics Workshop on High Intensity and High Brightness Hadron Beams CY OCT 18-22, 2004 CL Bensheim, GERMANY SP GSI, CEA, FZJ AB The Spallation Neutron Source accelerator systems will deliver a 1 GeV, 1.44 MW proton beam to a liquid mercury target for neutron scattering research. The accelerator complex consists of an H- injector, capable of producing one-ms-long pulses at 60 Hz repetition rate with 38 mA peak current, a I GeV linear accelerator, an accumulator ring and associated transport lines. A 2.5 MeV beam from the Front End is accelerated to 86 MeV in a Drift Tube Linac, then to 185 MeV in a Coupled-Cavity Linac and then to 1 GeV in a Superconducting Linac. The staged beam commissioning of the accelerator complex is proceeding as component installation progresses. The Front End, Drift Tube Linac and part of the Coupled-Cavity Linac have been commissioned at ORNL. The primary design goals of peak current, transverse emittance and beam energy have been achieved. Results and status of the beam commissioning program will be presented. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA. RP Aleksandrov, A (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA. NR 13 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0258-2 J9 AIP CONF PROC PY 2005 VL 773 BP 73 EP 78 PG 6 WC Physics, Particles & Fields SC Physics GA BCO89 UT WOS:000230453400014 ER PT S AU Ostroumov, PN Nolen, JA Shepard, KW AF Ostroumov, PN Nolen, JA Shepard, KW BE Hofmann, I Hasse, RW Lagniel, JM TI Heavy-ion driver linac for the RIA facility and the feasibility of producing multi-megawatt beams SO High Intensity and High Brightness Hadron Beams SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 33rd ICFA Advanced Beam Dynamics Workshop on High Intensity and High Brightness Hadron Beams CY OCT 18-22, 2004 CL Bensheim, GERMANY SP GSI, CEA, FZJ DE heavy-ion; high-power; superconducting linac; bunching; beam transport AB The Rare-Isotope Accelerator (RIA) facility is a top priority project in the U.S. RIA is a next generation facility for basic research with radioactive beams that utilizes both standard isotope-separator on-line and in-flight fragmentation methods with novel approaches to handle high primary-beam power and remove existing limitations in the extraction of short-lived isotopes. A versatile primary accelerator, a 1.4-GV, CW superconducting linac, will provide beams from protons at 1 GeV to uranium at 400 MeV/u at power levels of 400 kW. Novel features include the acceptance of two charge states of heavy ions from the ion source and the acceleration of five charge states following the stripper foils. To achieve these goals, comprehensive beam dynamics studies have been performed to optimize the design of the driver linac. Recently we have investigated the feasibility of increasing the currents of light ions to deliver megawatts of beam power. This option is entirely possible from the beam dynamics point of view. It would require higher power from the rf system, as well as, increased shielding at the beam loss points with respect to the existing baseline design. Preliminary indications of the limitations of beam power for this class of CW superconducting linac for light ion beams will be presented. C1 Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA. RP Ostroumov, PN (reprint author), Argonne Natl Lab, Div Phys, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 8 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0258-2 J9 AIP CONF PROC PY 2005 VL 773 BP 89 EP 93 PG 5 WC Physics, Particles & Fields SC Physics GA BCO89 UT WOS:000230453400017 ER PT S AU Keller, R Luft, P Regis, M Wallig, J Monroy, M Ratti, A Syversrud, D Welton, R Anderson, D AF Keller, R Luft, P Regis, M Wallig, J Monroy, M Ratti, A Syversrud, D Welton, R Anderson, D BE Hofmann, I Hasse, RW Lagniel, JM TI A hybrid ion source concept for a proton driver front end SO High Intensity and High Brightness Hadron Beams SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 33rd ICFA Advanced Beam Dynamics Workshop on High Intensity and High Brightness Hadron Beams CY OCT 18-22, 2004 CL Bensheim, GERMANY SP GSI, CEA, FZJ DE negative hydrogen (H) ion source; proton driver injector ID INJECTOR AB A novel concept for creating intense beams of negative hydrogen ion beams has been devised, and first steps towards its realization have been taken. In this approach, an ECR plasma generator operating at 2.45 GHz frequency is utilized as a plasma cathode, and electrons are extracted instead of ions and injected at moderate energy into an SNS-type multi-cusp IT ion source. This secondary source is then driven by chopped d. c. power, rather than rf power, but does not need filaments which are the cause for the rather short lifetime of conventional IT sources. The development of this ion source is primarily aimed at the future beam-power goal of 3 MW for the Spallation Neutron Source (SNS) [1] that will be pursued after the start of SNS operations. The first two phases of this development effort have been successfully passed: assembly of a test stand and verification of the performance of an rf-driven SNS ion-source prototype and extraction of electrons with more than 200 mA current from a 2.45-GHz ECR ion source obtained on loan from Argonne National Laboratory. An electron-extraction chamber that joins these ECR and IT sources has been fabricated, and the next goal is the demonstration of actual H- ion production by this novel, hybrid ion source. This paper describes the source principle and design in detail, reports on the current status of the development work, and gives an outlook on future lines of development. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Keller, R (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. NR 17 TC 3 Z9 3 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0258-2 J9 AIP CONF PROC PY 2005 VL 773 BP 104 EP 106 PG 3 WC Physics, Particles & Fields SC Physics GA BCO89 UT WOS:000230453400020 ER PT S AU Spentzouris, P Amundson, J AF Spentzouris, P Amundson, J BE Hofmann, I Hasse, RW Lagniel, JM TI Emittance dilution and halo creation during the first milliseconds after injection at the Fermilab Booster SO High Intensity and High Brightness Hadron Beams SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 33rd ICFA Advanced Beam Dynamics Workshop on High Intensity and High Brightness Hadron Beams CY OCT 18-22, 2004 CL Bensheim, GERMANY SP GSI, CEA, FZJ DE space-charge; halo; parallel computing; Booster; injection AB During the past year, the Fermilab Booster has been pushed to record intensities in order to satisfy the needs of the Tevatron collider and neutrino programs. This high intensity makes the study of space-charge effects and halo formation highly relevant to optimizing Booster performance. We present measurements of beam width evolution, halo formation, and coherent tune shifts, emphasizing the experimental techniques used and the calibration of the measuring devices. We also use simulations utilizing the 3D space-charge code Synergia to study the physical origins of these effects. C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Spentzouris, P (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. NR 10 TC 0 Z9 0 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0258-2 J9 AIP CONF PROC PY 2005 VL 773 BP 127 EP 131 PG 5 WC Physics, Particles & Fields SC Physics GA BCO89 UT WOS:000230453400025 ER PT S AU Cousineau, S Danilov, V Holmes, J Macek, R AF Cousineau, S Danilov, V Holmes, J Macek, R BE Hofmann, I Hasse, RW Lagniel, JM TI Studies of longitudinal dynamics in the Los Alamos Proton Storage Ring SO HIGH INTENSITY AND HIGH BRIGHTNESS HADRON BEAMS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 33rd ICFA Advanced Beam Dynamics Workshop on High Intensity and High Brightness Hadron Beams CY OCT 18-22, 2004 CL Bensheim, GERMANY SP GSI, CEA, FZJ AB Two separate studies of space charge longitudinal dynamics in the Los Alamos Proton Storage Ring have been completed. The first of these studies is a benchmark of a longitudinal instability caused by three ferrite inductors used in the ring to provide longitudinal space charge compensation. We use the ORBIT code to benchmark the growth time, mode spectrum, and intensity threshold of the instability. The second study concerns the 201.5 MHz linac microbunch structure of the beam. We find that this microbunch structure persists in the ring over long periods of time with no RF bunching. We show through analysis of the experimental data and simulations that space charge, coupled with energy spread effects, is responsible for the sustained structure. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Cousineau, S (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. NR 4 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0258-2 J9 AIP CONF PROC PY 2005 VL 773 BP 132 EP 136 PG 5 WC Physics, Particles & Fields SC Physics GA BCO89 UT WOS:000230453400026 ER PT S AU Holmes, JA Danilov, VV Cousineau, S AF Holmes, JA Danilov, VV Cousineau, S BE Hofmann, I Hasse, RW Lagniel, JM TI Painting self-consistent beam distributions in rings SO High Intensity and High Brightness Hadron Beams SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 33rd ICFA Advanced Beam Dynamics Workshop on High Intensity and High Brightness Hadron Beams CY OCT 18-22, 2004 CL Bensheim, GERMANY SP GSI, CEA, FZJ DE space charge; beam transport AB This paper is based on recently described sets of self-consistent 2D and 3D time-dependent space charge distributions. A subset of these distributions can be injection-painted into an accumulator ring, such as the Spallation Neutron Source Ring, to produce periodic space charge conditions. The periodic condition guarantees zero space-charge-induced halo growth and beam loss during injection. Also, some of these distributions can be manipulated to produce flat, or even point-like, beams. Practical aspects of such schemes are discussed, and simulations of a number of 2D and 3D specific cases are presented. C1 Oak Ridge Natl Lab, Spallat Neutron Source, Oak Ridge, TN 37831 USA. RP Holmes, JA (reprint author), Oak Ridge Natl Lab, Spallat Neutron Source, Oak Ridge, TN 37831 USA. NR 7 TC 0 Z9 1 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0258-2 J9 AIP CONF PROC PY 2005 VL 773 BP 163 EP 165 PG 3 WC Physics, Particles & Fields SC Physics GA BCO89 UT WOS:000230453400033 ER PT S AU Luccio, AU D'Imperio, NL AF Luccio, AU D'Imperio, NL BE Hofmann, I Hasse, RW Lagniel, JM TI Octupole resonance in the AGS at high intensity: A SIMBAD study SO High Intensity and High Brightness Hadron Beams SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 33rd ICFA Advanced Beam Dynamics Workshop on High Intensity and High Brightness Hadron Beams CY OCT 18-22, 2004 CL Bensheim, GERMANY SP GSI, CEA, FZJ AB We studied the Octupole (Montague) resonance in the AGS, in its high intensity mode, by tracking with the PIC code SIMBAD. We calculated, turn-by-turn, the betatron tune footprint from the eigenvalues of the one-turn matrix. We show that one should exercise particular caution when the betatron tunes are close together, since the matrix gives ambiguous results at the resonance. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Luccio, AU (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 4 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0258-2 J9 AIP CONF PROC PY 2005 VL 773 BP 166 EP 168 PG 3 WC Physics, Particles & Fields SC Physics GA BCO89 UT WOS:000230453400034 ER PT S AU Spickermann, T AF Spickermann, T BE Hofmann, I Hasse, RW Lagniel, JM TI Beam loss measurements at the Los Alamos Proton Storage Ring SO High Intensity and High Brightness Hadron Beams SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 33rd ICFA Advanced Beam Dynamics Workshop on High Intensity and High Brightness Hadron Beams CY OCT 18-22, 2004 CL Bensheim, GERMANY SP GSI, CEA, FZJ AB During normal operation the Los Alamos Proton Storage Ring (PSR) accumulates up to 4.10(13) protons over 625 mu s with a repetition rate of 20 Hz, corresponding to a current of 125 mu A to the Lujan Neutron Science Center. Beam losses in the ring as well as in the extraction beam line and the subsequent activation of material are a limiting factor at these currents. Careful tuning of injection, ring and extraction line is paramount to limiting losses to acceptable levels. Losses are typically not uniform around the ring, but occur in significantly higher levels in certain "hot spots". Here I will report on losses related to the stripper foil which are the dominant source of losses in the ring. First results of a comparison with simulations will also be presented. C1 Los Alamos Natl Lab, Los Alamos, NM 87544 USA. RP Spickermann, T (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87544 USA. NR 4 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0258-2 J9 AIP CONF PROC PY 2005 VL 773 BP 188 EP 190 PG 3 WC Physics, Particles & Fields SC Physics GA BCO89 UT WOS:000230453400039 ER PT S AU Macek, R Furman, M AF Macek, R Furman, M BE Hofmann, I Hasse, RW Lagniel, JM TI Summary of the ECLOUD'04 workshop SO High Intensity and High Brightness Hadron Beams SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 33rd ICFA Advanced Beam Dynamics Workshop on High Intensity and High Brightness Hadron Beams CY OCT 18-22, 2004 CL Bensheim, GERMANY SP GSI, CEA, FZJ DE electron cloud effects AB The 31(st) ICFA Advanced Beam Dynamics Workshop on Electron-Cloud Effects "ECLOLTD'04" was held April 19-23, 2004 at Napa, CA, USA. A broad range of current topics in this field were illuminated by 53 talks in 7 sessions plus 6 session summaries at the final summary session. These covered a variety of experimental methods and results, along with progress on understanding of the topic obtained from simulations and analytic theory, and evaluations of the effectiveness of various methods/mechanisms for mitigation of the adverse impact on accelerator performance. In addition, a panel discussion was held on "Future Needs and Future Directions". A summary of progress on the major themes covered at ECLOLTD'04 is presented. C1 Los Alamos Natl Lab, Los Alamos, NM 87544 USA. RP Macek, R (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87544 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 0-7354-0258-2 J9 AIP CONF PROC PY 2005 VL 773 BP 199 EP 203 PG 5 WC Physics, Particles & Fields SC Physics GA BCO89 UT WOS:000230453400041 ER PT S AU Fischer, W Iriso, U AF Fischer, W Iriso, U BE Hofmann, I Hasse, RW Lagniel, JM TI Electron cloud driven vacuum instability SO High Intensity and High Brightness Hadron Beams SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 33rd ICFA Advanced Beam Dynamics Workshop on High Intensity and High Brightness Hadron Beams CY OCT 18-22, 2004 CL Bensheim, GERMANY SP GSI, CEA, FZJ AB Electron clouds are shown to cause pressure rises in the Relativistic Heavy Ion Collider. In a number of cases beam induced vacuum instabilities were seen where the pressure grows exponentially with time. We analyze under which conditions electron clouds can lead to these vacuum instabilities. We consider as the feedback mechanism for the instability the following: rest gas ionization by electrons in the cloud and the beam, subsequent acceleration of the ions by the beam, and molecular desorption induced by the ions hitting the wall, leading to increased pressure and thus higher ionization rates. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Fischer, W (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. 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 0-7354-0258-2 J9 AIP CONF PROC PY 2005 VL 773 BP 204 EP 206 PG 3 WC Physics, Particles & Fields SC Physics GA BCO89 UT WOS:000230453400042 ER PT S AU Zhang, SY AF Zhang, SY BE Hofmann, I Hasse, RW Lagniel, JM TI Ion desorption at RHIC SO High Intensity and High Brightness Hadron Beams SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 33rd ICFA Advanced Beam Dynamics Workshop on High Intensity and High Brightness Hadron Beams CY OCT 18-22, 2004 CL Bensheim, GERMANY SP GSI, CEA, FZJ ID BOMBARDMENT; EMISSION AB The ion desorption has a long history of intensive studies by many physical societies. Recently, it has been found responsible to the intensity limitation of several low energy heavy ion accelerators, and it is also of concern for high energy hadron accelerators, such as RHIC, LHC, and GSI FAIR. This article reviews the relevant observations at RHIC. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Zhang, SY (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 21 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 0-7354-0258-2 J9 AIP CONF PROC PY 2005 VL 773 BP 216 EP 218 PG 3 WC Physics, Particles & Fields SC Physics GA BCO89 UT WOS:000230453400045 ER PT S AU Seidl, PA Molvik, AW Bieniosek, FM Cohen, RH Faltens, A Friedman, A Covo, MK Lund, SM Prost, L Vay, JL AF Seidl, PA Molvik, AW Bieniosek, FM Cohen, RH Faltens, A Friedman, A Covo, MK Lund, SM Prost, L Vay, JL BE Hofmann, I Hasse, RW Lagniel, JM TI Intense ion beam transport in magnetic quadrupoles: Experiments on electron and gas effects SO High Intensity and High Brightness Hadron Beams SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 33rd ICFA Advanced Beam Dynamics Workshop on High Intensity and High Brightness Hadron Beams CY OCT 18-22, 2004 CL Bensheim, GERMANY SP GSI, CEA, FZJ AB Heavy-ion induction linacs for inertial fusion energy and high-energy density physics have an economic incentive to minimize the clearance between the beam edge and the aperture wall. This increases the risk from electron clouds and gas desorbed from walls. We have measured electron and gas emission from I MeV K+ incident on surfaces near grazing incidence on the High-Current Experiment (HCX) at LBNL. Electron emission coefficients reach values > 100, whereas gas desorption coefficients are near 10(4). Mitigation techniques are being studied: A bead-blasted rough surface reduces electron emission by a factor of 10 and gas desorption by a factor of 2. We also discuss the results of beam transport (of 0.03-0.18 A K+) through four pulsed room-temperature magnetic quadrupoles in the HCX at LBN-L. Diagnostics are installed on HCX, between and within quadrupole magnets, to measure the beam halo loss, net charge and expelled ions, from which we infer gas density, electron trapping, and the effects of mitigation techniques. A coordinated theory and computational effort has made significant progress towards a self-consistent model of positive-ion beam and electron dynamics. We are beginning to compare experimental and theoretical results. C1 Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Seidl, PA (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. NR 8 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0258-2 J9 AIP CONF PROC PY 2005 VL 773 BP 226 EP 228 PG 3 WC Physics, Particles & Fields SC Physics GA BCO89 UT WOS:000230453400048 ER PT S AU Zhang, SY Thieberger, P AF Zhang, SY Thieberger, P BE Hofmann, I Hasse, RW Lagniel, JM TI Test of anti-grazing ridges at RHIC SO HIGH INTENSITY AND HIGH BRIGHTNESS HADRON BEAMS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 33rd ICFA Advanced Beam Dynamics Workshop on High Intensity and High Brightness Hadron Beams CY OCT 18-22, 2004 CL Bensheim, GERMANY SP GSI, CEA, FZJ AB The RHIC warm section electron cloud is distinguished from normal short bunch electron cloud, observed in many machines, by the much longer bunch spacing and non-uniform distribution in the ring. It is suspected that the beam halo scraping produced positive ions may help secondary electrons to stay longer. Local desorption leading to more residual gas being ionized by the beam may be important too. Anti-grazing ridges are designed to counteract these mechanisms. This article reviews the RIM warm section electron cloud, the beam scraping effect, and the test of anti-grazing ridges. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Zhang, SY (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0258-2 J9 AIP CONF PROC PY 2005 VL 773 BP 233 EP 235 PG 3 WC Physics, Particles & Fields SC Physics GA BCO89 UT WOS:000230453400050 ER PT S AU Weng, WT Raparia, D AF Weng, WT Raparia, D CA BNL Neutrino Working Group BE Hofmann, I Hasse, RW Lagniel, JM TI The BNL super neutrino beam project SO High Intensity and High Brightness Hadron Beams SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 33rd ICFA Advanced Beam Dynamics Workshop on High Intensity and High Brightness Hadron Beams CY OCT 18-22, 2004 CL Bensheim, GERMANY SP GSI, CEA, FZJ AB To determine the neutrino mixing amplitudes and phase accurately, as well as the CP violation parameters, a very long base line super neutrino beam facility is needed. This is possible due to the long distance and wideband nature of the neutrino beam for the observation of several oscillations from one species of the neutrino to the other [1,2] BNL plans to upgrade the AGS proton beam from the current 0.14 MW to higher than 1.0 MW and beyond for such a neutrino facility which consists of three major subsystems. First is a 1.5 GeV superconducting linac to replace the booster as injector for the AGS, second is the performance upgrade for the AGS itself for the higher intensity and repetition rate, and finally is target and horn system for the neutrino production. The major contribution for the higher power is from the increase of the repetition rate of the AGS form 0.3 Hz to 2.5 Hz, with moderate increase from the intensity [3]. The design consideration to achieve high intensity and low losses for the linac and the AGS will be reviewed. The target horn. design for high power operation and easy maintenance will also be presented. C1 Brookhaven Natl Lab, Upton, NY 11973 USA. RP Weng, WT (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0258-2 J9 AIP CONF PROC PY 2005 VL 773 BP 259 EP 264 PG 6 WC Physics, Particles & Fields SC Physics GA BCO89 UT WOS:000230453400055 ER PT S AU Danilov, V Aleksandrov, A Assadi, S Barhen, J Braiman, Y Grice, W Shishlo, A Henderson, S Lang, B Liu, Y Murdoch, G Potter, K AF Danilov, V Aleksandrov, A Assadi, S Barhen, J Braiman, Y Grice, W Shishlo, A Henderson, S Lang, B Liu, Y Murdoch, G Potter, K BE Hofmann, I Hasse, RW Lagniel, JM TI H- laser stripping proof-of-principle experiments overview SO HIGH INTENSITY AND HIGH BRIGHTNESS HADRON BEAMS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 33rd ICFA Advanced Beam Dynamics Workshop on High Intensity and High Brightness Hadron Beams CY OCT 18-22, 2004 CL Bensheim, GERMANY SP GSI, CEA, FZJ AB H- ion laser stripping was proposed long ago, but it is only now becoming feasible due to technical and theoretical advances. This paper presents a description and a comparison of proof-of-principle experiments under development in Oak Ridge and Brookhaven National Laboratories. C1 Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA. RP Danilov, V (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA. RI Grice, Warren/L-8466-2013; OI Grice, Warren/0000-0003-4266-4692 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 0-7354-0258-2 J9 AIP CONF PROC PY 2005 VL 773 BP 286 EP 290 PG 5 WC Physics, Particles & Fields SC Physics GA BCO89 UT WOS:000230453400061 ER PT S AU Ruggiero, AG AF Ruggiero, AG BE Hofmann, I Hasse, RW Lagniel, JM TI FFAG-Based high-intensity proton drivers SO High Intensity and High Brightness Hadron Beams SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 33rd ICFA Advanced Beam Dynamics Workshop on High Intensity and High Brightness Hadron Beams CY OCT 18-22, 2004 CL Bensheim, GERMANY SP GSI, CEA, FZJ DE FFAG accelerators; proton driver. high-intensity beam; high-power beam. proton beam AB This paper is the summary of a feasibility study of a Fixed-Field Alternating-Gradient (FFAG) Accelerator for Protons in the one-to-few GeV energy range, and average beam power of several MWatt. The example we have adopted here is a beam energy of I GeV and an average power of 10 MWatt, but of course the same design approach can be used with other beam parameters. The design principles, merits and limitations of the FFAG accelerators have been described previously [1]. In particular, more advanced techniques to minimize magnet dimension and field strength have been recently proposed. The design makes use of a novel concept by which it is possible to cancel chromatic effects, thus making betatron tunes and functions independent of the particle momentum, with an Adjusted Field Profile [2]. The example given here assumes a pulsed mode of operation at the repetition rate of 1.0 kHz. C1 Brookhaven Natl Lab, Collider Accelerator Dept, Upton, NY 11973 USA. RP Ruggiero, AG (reprint author), Brookhaven Natl Lab, Collider Accelerator Dept, POB 5000, Upton, NY 11973 USA. NR 6 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 0-7354-0258-2 J9 AIP CONF PROC PY 2005 VL 773 BP 324 EP 328 PG 5 WC Physics, Particles & Fields SC Physics GA BCO89 UT WOS:000230453400069 ER EF